diff options
Diffstat (limited to 'drivers')
49 files changed, 4271 insertions, 2028 deletions
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 455d89a..326b302 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -151,11 +151,24 @@ static void __dwc3_set_mode(struct work_struct *work) switch (dwc->desired_dr_role) { case DWC3_GCTL_PRTCAP_HOST: ret = dwc3_host_init(dwc); - if (ret) + if (ret) { dev_err(dwc->dev, "failed to initialize host\n"); + } else { + if (dwc->usb2_phy) + otg_set_vbus(dwc->usb2_phy->otg, true); + if (dwc->usb2_generic_phy) + phy_set_mode(dwc->usb2_generic_phy, PHY_MODE_USB_HOST); + + } break; case DWC3_GCTL_PRTCAP_DEVICE: dwc3_event_buffers_setup(dwc); + + if (dwc->usb2_phy) + otg_set_vbus(dwc->usb2_phy->otg, false); + if (dwc->usb2_generic_phy) + phy_set_mode(dwc->usb2_generic_phy, PHY_MODE_USB_DEVICE); + ret = dwc3_gadget_init(dwc); if (ret) dev_err(dwc->dev, "failed to initialize peripheral\n"); @@ -721,6 +734,8 @@ static void dwc3_core_setup_global_control(struct dwc3 *dwc) dwc3_writel(dwc->regs, DWC3_GCTL, reg); } +static int dwc3_core_get_phy(struct dwc3 *dwc); + /** * dwc3_core_init - Low-level initialization of DWC3 Core * @dwc: Pointer to our controller context structure @@ -759,6 +774,10 @@ static int dwc3_core_init(struct dwc3 *dwc) if (ret) goto err0; + ret = dwc3_core_get_phy(dwc); + if (ret) + goto err0; + dwc3_core_setup_global_control(dwc); dwc3_core_num_eps(dwc); @@ -796,13 +815,19 @@ static int dwc3_core_init(struct dwc3 *dwc) dwc3_writel(dwc->regs, DWC3_GUCTL2, reg); } - /* - * Enable hardware control of sending remote wakeup in HS when - * the device is in the L1 state. - */ - if (dwc->revision >= DWC3_REVISION_290A) { + if (dwc->revision >= DWC3_REVISION_250A) { reg = dwc3_readl(dwc->regs, DWC3_GUCTL1); - reg |= DWC3_GUCTL1_DEV_L1_EXIT_BY_HW; + + /* + * Enable hardware control of sending remote wakeup + * in HS when the device is in the L1 state. + */ + if (dwc->revision >= DWC3_REVISION_290A) + reg |= DWC3_GUCTL1_DEV_L1_EXIT_BY_HW; + + if (dwc->dis_tx_ipgap_linecheck_quirk) + reg |= DWC3_GUCTL1_TX_IPGAP_LINECHECK_DIS; + dwc3_writel(dwc->regs, DWC3_GUCTL1, reg); } @@ -903,6 +928,12 @@ static int dwc3_core_init_mode(struct dwc3 *dwc) switch (dwc->dr_mode) { case USB_DR_MODE_PERIPHERAL: dwc3_set_prtcap(dwc, DWC3_GCTL_PRTCAP_DEVICE); + + if (dwc->usb2_phy) + otg_set_vbus(dwc->usb2_phy->otg, false); + if (dwc->usb2_generic_phy) + phy_set_mode(dwc->usb2_generic_phy, PHY_MODE_USB_DEVICE); + ret = dwc3_gadget_init(dwc); if (ret) { if (ret != -EPROBE_DEFER) @@ -912,6 +943,12 @@ static int dwc3_core_init_mode(struct dwc3 *dwc) break; case USB_DR_MODE_HOST: dwc3_set_prtcap(dwc, DWC3_GCTL_PRTCAP_HOST); + + if (dwc->usb2_phy) + otg_set_vbus(dwc->usb2_phy->otg, true); + if (dwc->usb2_generic_phy) + phy_set_mode(dwc->usb2_generic_phy, PHY_MODE_USB_HOST); + ret = dwc3_host_init(dwc); if (ret) { if (ret != -EPROBE_DEFER) @@ -1023,6 +1060,8 @@ static void dwc3_get_properties(struct dwc3 *dwc) "snps,dis-u2-freeclk-exists-quirk"); dwc->dis_del_phy_power_chg_quirk = device_property_read_bool(dev, "snps,dis-del-phy-power-chg-quirk"); + dwc->dis_tx_ipgap_linecheck_quirk = device_property_read_bool(dev, + "snps,dis-tx-ipgap-linecheck-quirk"); dwc->tx_de_emphasis_quirk = device_property_read_bool(dev, "snps,tx_de_emphasis_quirk"); @@ -1148,10 +1187,6 @@ static int dwc3_probe(struct platform_device *pdev) platform_set_drvdata(pdev, dwc); dwc3_cache_hwparams(dwc); - ret = dwc3_core_get_phy(dwc); - if (ret) - goto err0; - spin_lock_init(&dwc->lock); pm_runtime_set_active(dev); diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 981c77f..ea910ac 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -1,4 +1,4 @@ -/** +/* * core.h - DesignWare USB3 DRD Core Header * * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com @@ -204,6 +204,7 @@ #define DWC3_GCTL_DSBLCLKGTNG BIT(0) /* Global User Control 1 Register */ +#define DWC3_GUCTL1_TX_IPGAP_LINECHECK_DIS BIT(28) #define DWC3_GUCTL1_DEV_L1_EXIT_BY_HW BIT(24) /* Global USB2 PHY Configuration Register */ @@ -522,7 +523,6 @@ struct dwc3_event_buffer { * @trb_pool_dma: dma address of @trb_pool * @trb_enqueue: enqueue 'pointer' into TRB array * @trb_dequeue: dequeue 'pointer' into TRB array - * @desc: usb_endpoint_descriptor pointer * @dwc: pointer to DWC controller * @saved_state: ep state saved during hibernation * @flags: endpoint flags (wedged, stalled, ...) @@ -664,7 +664,7 @@ enum dwc3_link_state { * @bpl: DW0-3 * @bph: DW4-7 * @size: DW8-B - * @trl: DWC-F + * @ctrl: DWC-F */ struct dwc3_trb { u32 bpl; @@ -674,16 +674,16 @@ struct dwc3_trb { } __packed; /** - * dwc3_hwparams - copy of HWPARAMS registers - * @hwparams0 - GHWPARAMS0 - * @hwparams1 - GHWPARAMS1 - * @hwparams2 - GHWPARAMS2 - * @hwparams3 - GHWPARAMS3 - * @hwparams4 - GHWPARAMS4 - * @hwparams5 - GHWPARAMS5 - * @hwparams6 - GHWPARAMS6 - * @hwparams7 - GHWPARAMS7 - * @hwparams8 - GHWPARAMS8 + * struct dwc3_hwparams - copy of HWPARAMS registers + * @hwparams0: GHWPARAMS0 + * @hwparams1: GHWPARAMS1 + * @hwparams2: GHWPARAMS2 + * @hwparams3: GHWPARAMS3 + * @hwparams4: GHWPARAMS4 + * @hwparams5: GHWPARAMS5 + * @hwparams6: GHWPARAMS6 + * @hwparams7: GHWPARAMS7 + * @hwparams8: GHWPARAMS8 */ struct dwc3_hwparams { u32 hwparams0; @@ -730,7 +730,8 @@ struct dwc3_hwparams { * @unaligned: true for OUT endpoints with length not divisible by maxp * @direction: IN or OUT direction flag * @mapped: true when request has been dma-mapped - * @queued: true when request has been queued to HW + * @started: request is started + * @zero: wants a ZLP */ struct dwc3_request { struct usb_request request; @@ -761,17 +762,23 @@ struct dwc3_scratchpad_array { /** * struct dwc3 - representation of our controller - * @drd_work - workqueue used for role swapping + * @drd_work: workqueue used for role swapping * @ep0_trb: trb which is used for the ctrl_req + * @bounce: address of bounce buffer + * @scratchbuf: address of scratch buffer * @setup_buf: used while precessing STD USB requests - * @ep0_trb: dma address of ep0_trb + * @ep0_trb_addr: dma address of @ep0_trb + * @bounce_addr: dma address of @bounce * @ep0_usb_req: dummy req used while handling STD USB requests * @scratch_addr: dma address of scratchbuf * @ep0_in_setup: one control transfer is completed and enter setup phase * @lock: for synchronizing * @dev: pointer to our struct device + * @sysdev: pointer to the DMA-capable device * @xhci: pointer to our xHCI child - * @event_buffer_list: a list of event buffers + * @xhci_resources: struct resources for our @xhci child + * @ev_buf: struct dwc3_event_buffer pointer + * @eps: endpoint array * @gadget: device side representation of the peripheral controller * @gadget_driver: pointer to the gadget driver * @regs: base address for our registers @@ -795,8 +802,6 @@ struct dwc3_scratchpad_array { * @usb2_generic_phy: pointer to USB2 PHY * @usb3_generic_phy: pointer to USB3 PHY * @ulpi: pointer to ulpi interface - * @dcfg: saved contents of DCFG register - * @gctl: saved contents of GCTL register * @isoch_delay: wValue from Set Isochronous Delay request; * @u2sel: parameter from Set SEL request. * @u2pel: parameter from Set SEL request. @@ -830,7 +835,6 @@ struct dwc3_scratchpad_array { * @pending_events: true when we have pending IRQs to be handled * @pullups_connected: true when Run/Stop bit is set * @setup_packet_pending: true when there's a Setup Packet in FIFO. Workaround - * @start_config_issued: true when StartConfig command has been issued * @three_stage_setup: set if we perform a three phase setup * @usb3_lpm_capable: set if hadrware supports Link Power Management * @disable_scramble_quirk: set if we enable the disable scramble quirk @@ -845,11 +849,14 @@ struct dwc3_scratchpad_array { * @dis_u2_susphy_quirk: set if we disable usb2 suspend phy * @dis_enblslpm_quirk: set if we clear enblslpm in GUSB2PHYCFG, * disabling the suspend signal to the PHY. + * @dis_rxdet_inp3_quirk: set if we disable Rx.Detect in P3 * @dis_u2_freeclk_exists_quirk : set if we clear u2_freeclk_exists * in GUSB2PHYCFG, specify that USB2 PHY doesn't * provide a free-running PHY clock. * @dis_del_phy_power_chg_quirk: set if we disable delay phy power * change quirk. + * @dis_tx_ipgap_linecheck_quirk: set if we disable u2mac linestate + * check during HS transmit. * @tx_de_emphasis_quirk: set if we enable Tx de-emphasis quirk * @tx_de_emphasis: Tx de-emphasis value * 0 - -6dB de-emphasis @@ -1004,6 +1011,7 @@ struct dwc3 { unsigned dis_rxdet_inp3_quirk:1; unsigned dis_u2_freeclk_exists_quirk:1; unsigned dis_del_phy_power_chg_quirk:1; + unsigned dis_tx_ipgap_linecheck_quirk:1; unsigned tx_de_emphasis_quirk:1; unsigned tx_de_emphasis:2; diff --git a/drivers/usb/dwc3/debug.h b/drivers/usb/dwc3/debug.h index cb2d8d3..5e9c070e 100644 --- a/drivers/usb/dwc3/debug.h +++ b/drivers/usb/dwc3/debug.h @@ -173,9 +173,8 @@ static inline const char *dwc3_ep0_state_string(enum dwc3_ep0_state state) * @event: the event code */ static inline const char * -dwc3_gadget_event_string(const struct dwc3_event_devt *event) +dwc3_gadget_event_string(char *str, const struct dwc3_event_devt *event) { - static char str[256]; enum dwc3_link_state state = event->event_info & DWC3_LINK_STATE_MASK; switch (event->type) { @@ -223,15 +222,249 @@ dwc3_gadget_event_string(const struct dwc3_event_devt *event) return str; } +static inline void dwc3_decode_get_status(__u8 t, __u16 i, __u16 l, char *str) +{ + switch (t & USB_RECIP_MASK) { + case USB_RECIP_INTERFACE: + sprintf(str, "Get Interface Status(Intf = %d, Length = %d)", + i, l); + break; + case USB_RECIP_ENDPOINT: + sprintf(str, "Get Endpoint Status(ep%d%s)", + i & ~USB_DIR_IN, + i & USB_DIR_IN ? "in" : "out"); + break; + } +} + +static inline void dwc3_decode_set_clear_feature(__u8 t, __u8 b, __u16 v, + __u16 i, char *str) +{ + switch (t & USB_RECIP_MASK) { + case USB_RECIP_DEVICE: + sprintf(str, "%s Device Feature(%s%s)", + b == USB_REQ_CLEAR_FEATURE ? "Clear" : "Set", + ({char *s; + switch (v) { + case USB_DEVICE_SELF_POWERED: + s = "Self Powered"; + break; + case USB_DEVICE_REMOTE_WAKEUP: + s = "Remote Wakeup"; + break; + case USB_DEVICE_TEST_MODE: + s = "Test Mode"; + break; + default: + s = "UNKNOWN"; + } s; }), + v == USB_DEVICE_TEST_MODE ? + ({ char *s; + switch (i) { + case TEST_J: + s = ": TEST_J"; + break; + case TEST_K: + s = ": TEST_K"; + break; + case TEST_SE0_NAK: + s = ": TEST_SE0_NAK"; + break; + case TEST_PACKET: + s = ": TEST_PACKET"; + break; + case TEST_FORCE_EN: + s = ": TEST_FORCE_EN"; + break; + default: + s = ": UNKNOWN"; + } s; }) : ""); + break; + case USB_RECIP_INTERFACE: + sprintf(str, "%s Interface Feature(%s)", + b == USB_REQ_CLEAR_FEATURE ? "Clear" : "Set", + v == USB_INTRF_FUNC_SUSPEND ? + "Function Suspend" : "UNKNOWN"); + break; + case USB_RECIP_ENDPOINT: + sprintf(str, "%s Endpoint Feature(%s ep%d%s)", + b == USB_REQ_CLEAR_FEATURE ? "Clear" : "Set", + v == USB_ENDPOINT_HALT ? "Halt" : "UNKNOWN", + i & ~USB_DIR_IN, + i & USB_DIR_IN ? "in" : "out"); + break; + } +} + +static inline void dwc3_decode_set_address(__u16 v, char *str) +{ + sprintf(str, "Set Address(Addr = %02x)", v); +} + +static inline void dwc3_decode_get_set_descriptor(__u8 t, __u8 b, __u16 v, + __u16 i, __u16 l, char *str) +{ + sprintf(str, "%s %s Descriptor(Index = %d, Length = %d)", + b == USB_REQ_GET_DESCRIPTOR ? "Get" : "Set", + ({ char *s; + switch (v >> 8) { + case USB_DT_DEVICE: + s = "Device"; + break; + case USB_DT_CONFIG: + s = "Configuration"; + break; + case USB_DT_STRING: + s = "String"; + break; + case USB_DT_INTERFACE: + s = "Interface"; + break; + case USB_DT_ENDPOINT: + s = "Endpoint"; + break; + case USB_DT_DEVICE_QUALIFIER: + s = "Device Qualifier"; + break; + case USB_DT_OTHER_SPEED_CONFIG: + s = "Other Speed Config"; + break; + case USB_DT_INTERFACE_POWER: + s = "Interface Power"; + break; + case USB_DT_OTG: + s = "OTG"; + break; + case USB_DT_DEBUG: + s = "Debug"; + break; + case USB_DT_INTERFACE_ASSOCIATION: + s = "Interface Association"; + break; + case USB_DT_BOS: + s = "BOS"; + break; + case USB_DT_DEVICE_CAPABILITY: + s = "Device Capability"; + break; + case USB_DT_PIPE_USAGE: + s = "Pipe Usage"; + break; + case USB_DT_SS_ENDPOINT_COMP: + s = "SS Endpoint Companion"; + break; + case USB_DT_SSP_ISOC_ENDPOINT_COMP: + s = "SSP Isochronous Endpoint Companion"; + break; + default: + s = "UNKNOWN"; + break; + } s; }), v & 0xff, l); +} + + +static inline void dwc3_decode_get_configuration(__u16 l, char *str) +{ + sprintf(str, "Get Configuration(Length = %d)", l); +} + +static inline void dwc3_decode_set_configuration(__u8 v, char *str) +{ + sprintf(str, "Set Configuration(Config = %d)", v); +} + +static inline void dwc3_decode_get_intf(__u16 i, __u16 l, char *str) +{ + sprintf(str, "Get Interface(Intf = %d, Length = %d)", i, l); +} + +static inline void dwc3_decode_set_intf(__u8 v, __u16 i, char *str) +{ + sprintf(str, "Set Interface(Intf = %d, Alt.Setting = %d)", i, v); +} + +static inline void dwc3_decode_synch_frame(__u16 i, __u16 l, char *str) +{ + sprintf(str, "Synch Frame(Endpoint = %d, Length = %d)", i, l); +} + +static inline void dwc3_decode_set_sel(__u16 l, char *str) +{ + sprintf(str, "Set SEL(Length = %d)", l); +} + +static inline void dwc3_decode_set_isoch_delay(__u8 v, char *str) +{ + sprintf(str, "Set Isochronous Delay(Delay = %d ns)", v); +} + +/** + * dwc3_decode_ctrl - returns a string represetion of ctrl request + */ +static inline const char *dwc3_decode_ctrl(char *str, __u8 bRequestType, + __u8 bRequest, __u16 wValue, __u16 wIndex, __u16 wLength) +{ + switch (bRequest) { + case USB_REQ_GET_STATUS: + dwc3_decode_get_status(bRequestType, wIndex, wLength, str); + break; + case USB_REQ_CLEAR_FEATURE: + case USB_REQ_SET_FEATURE: + dwc3_decode_set_clear_feature(bRequestType, bRequest, wValue, + wIndex, str); + break; + case USB_REQ_SET_ADDRESS: + dwc3_decode_set_address(wValue, str); + break; + case USB_REQ_GET_DESCRIPTOR: + case USB_REQ_SET_DESCRIPTOR: + dwc3_decode_get_set_descriptor(bRequestType, bRequest, wValue, + wIndex, wLength, str); + break; + case USB_REQ_GET_CONFIGURATION: + dwc3_decode_get_configuration(wLength, str); + break; + case USB_REQ_SET_CONFIGURATION: + dwc3_decode_set_configuration(wValue, str); + break; + case USB_REQ_GET_INTERFACE: + dwc3_decode_get_intf(wIndex, wLength, str); + break; + case USB_REQ_SET_INTERFACE: + dwc3_decode_set_intf(wValue, wIndex, str); + break; + case USB_REQ_SYNCH_FRAME: + dwc3_decode_synch_frame(wIndex, wLength, str); + break; + case USB_REQ_SET_SEL: + dwc3_decode_set_sel(wLength, str); + break; + case USB_REQ_SET_ISOCH_DELAY: + dwc3_decode_set_isoch_delay(wValue, str); + break; + default: + sprintf(str, "%02x %02x %02x %02x %02x %02x %02x %02x", + bRequestType, bRequest, + cpu_to_le16(wValue) & 0xff, + cpu_to_le16(wValue) >> 8, + cpu_to_le16(wIndex) & 0xff, + cpu_to_le16(wIndex) >> 8, + cpu_to_le16(wLength) & 0xff, + cpu_to_le16(wLength) >> 8); + } + + return str; +} + /** * dwc3_ep_event_string - returns event name * @event: then event code */ static inline const char * -dwc3_ep_event_string(const struct dwc3_event_depevt *event, u32 ep0state) +dwc3_ep_event_string(char *str, const struct dwc3_event_depevt *event, + u32 ep0state) { u8 epnum = event->endpoint_number; - static char str[256]; size_t len; int status; int ret; @@ -332,14 +565,14 @@ static inline const char *dwc3_gadget_event_type_string(u8 event) } } -static inline const char *dwc3_decode_event(u32 event, u32 ep0state) +static inline const char *dwc3_decode_event(char *str, u32 event, u32 ep0state) { const union dwc3_event evt = (union dwc3_event) event; if (evt.type.is_devspec) - return dwc3_gadget_event_string(&evt.devt); + return dwc3_gadget_event_string(str, &evt.devt); else - return dwc3_ep_event_string(&evt.depevt, ep0state); + return dwc3_ep_event_string(str, &evt.depevt, ep0state); } static inline const char *dwc3_ep_cmd_status_string(int status) diff --git a/drivers/usb/dwc3/debugfs.c b/drivers/usb/dwc3/debugfs.c index 7be963dd..4e09be8 100644 --- a/drivers/usb/dwc3/debugfs.c +++ b/drivers/usb/dwc3/debugfs.c @@ -653,16 +653,13 @@ static int dwc3_ep_trb_ring_show(struct seq_file *s, void *unused) goto out; } - seq_printf(s, "enqueue pointer %d\n", dep->trb_enqueue); - seq_printf(s, "dequeue pointer %d\n", dep->trb_dequeue); - seq_printf(s, "\n--------------------------------------------------\n\n"); seq_printf(s, "buffer_addr,size,type,ioc,isp_imi,csp,chn,lst,hwo\n"); for (i = 0; i < DWC3_TRB_NUM; i++) { struct dwc3_trb *trb = &dep->trb_pool[i]; unsigned int type = DWC3_TRBCTL_TYPE(trb->ctrl); - seq_printf(s, "%08x%08x,%d,%s,%d,%d,%d,%d,%d,%d\n", + seq_printf(s, "%08x%08x,%d,%s,%d,%d,%d,%d,%d,%d %c%c\n", trb->bph, trb->bpl, trb->size, dwc3_trb_type_string(type), !!(trb->ctrl & DWC3_TRB_CTRL_IOC), @@ -670,7 +667,9 @@ static int dwc3_ep_trb_ring_show(struct seq_file *s, void *unused) !!(trb->ctrl & DWC3_TRB_CTRL_CSP), !!(trb->ctrl & DWC3_TRB_CTRL_CHN), !!(trb->ctrl & DWC3_TRB_CTRL_LST), - !!(trb->ctrl & DWC3_TRB_CTRL_HWO)); + !!(trb->ctrl & DWC3_TRB_CTRL_HWO), + dep->trb_enqueue == i ? 'E' : ' ', + dep->trb_dequeue == i ? 'D' : ' '); } out: diff --git a/drivers/usb/dwc3/dwc3-exynos.c b/drivers/usb/dwc3/dwc3-exynos.c index 98f74ff..e089df7 100644 --- a/drivers/usb/dwc3/dwc3-exynos.c +++ b/drivers/usb/dwc3/dwc3-exynos.c @@ -125,12 +125,16 @@ static int dwc3_exynos_probe(struct platform_device *pdev) dev_err(dev, "couldn't get clock\n"); return -EINVAL; } - clk_prepare_enable(exynos->clk); + ret = clk_prepare_enable(exynos->clk); + if (ret) + return ret; exynos->susp_clk = devm_clk_get(dev, "usbdrd30_susp_clk"); if (IS_ERR(exynos->susp_clk)) exynos->susp_clk = NULL; - clk_prepare_enable(exynos->susp_clk); + ret = clk_prepare_enable(exynos->susp_clk); + if (ret) + goto susp_clk_err; if (of_device_is_compatible(node, "samsung,exynos7-dwusb3")) { exynos->axius_clk = devm_clk_get(dev, "usbdrd30_axius_clk"); @@ -139,7 +143,9 @@ static int dwc3_exynos_probe(struct platform_device *pdev) ret = -ENODEV; goto axius_clk_err; } - clk_prepare_enable(exynos->axius_clk); + ret = clk_prepare_enable(exynos->axius_clk); + if (ret) + goto axius_clk_err; } else { exynos->axius_clk = NULL; } @@ -197,6 +203,7 @@ vdd33_err: clk_disable_unprepare(exynos->axius_clk); axius_clk_err: clk_disable_unprepare(exynos->susp_clk); +susp_clk_err: clk_disable_unprepare(exynos->clk); return ret; } diff --git a/drivers/usb/dwc3/dwc3-st.c b/drivers/usb/dwc3/dwc3-st.c index dfbf464..505676f 100644 --- a/drivers/usb/dwc3/dwc3-st.c +++ b/drivers/usb/dwc3/dwc3-st.c @@ -230,7 +230,7 @@ static int st_dwc3_probe(struct platform_device *pdev) dwc3_data->syscfg_reg_off = res->start; - dev_vdbg(&pdev->dev, "glue-logic addr 0x%p, syscfg-reg offset 0x%x\n", + dev_vdbg(&pdev->dev, "glue-logic addr 0x%pK, syscfg-reg offset 0x%x\n", dwc3_data->glue_base, dwc3_data->syscfg_reg_off); dwc3_data->rstc_pwrdn = diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c index a78c78e..827e376 100644 --- a/drivers/usb/dwc3/ep0.c +++ b/drivers/usb/dwc3/ep0.c @@ -1,4 +1,4 @@ -/** +/* * ep0.c - DesignWare USB3 DRD Controller Endpoint 0 Handling * * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com @@ -319,10 +319,16 @@ static int dwc3_ep0_handle_status(struct dwc3 *dwc, { struct dwc3_ep *dep; u32 recip; + u32 value; u32 reg; u16 usb_status = 0; __le16 *response_pkt; + /* We don't support PTM_STATUS */ + value = le16_to_cpu(ctrl->wValue); + if (value != 0) + return -EINVAL; + recip = ctrl->bRequestType & USB_RECIP_MASK; switch (recip) { case USB_RECIP_DEVICE: diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index aea9a5b..9e41605a 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1,4 +1,4 @@ -/** +/* * gadget.c - DesignWare USB3 DRD Controller Gadget Framework Link * * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com @@ -36,13 +36,12 @@ #include "io.h" /** - * dwc3_gadget_set_test_mode - Enables USB2 Test Modes + * dwc3_gadget_set_test_mode - enables usb2 test modes * @dwc: pointer to our context structure * @mode: the mode to set (J, K SE0 NAK, Force Enable) * - * Caller should take care of locking. This function will - * return 0 on success or -EINVAL if wrong Test Selector - * is passed + * Caller should take care of locking. This function will return 0 on + * success or -EINVAL if wrong Test Selector is passed. */ int dwc3_gadget_set_test_mode(struct dwc3 *dwc, int mode) { @@ -69,7 +68,7 @@ int dwc3_gadget_set_test_mode(struct dwc3 *dwc, int mode) } /** - * dwc3_gadget_get_link_state - Gets current state of USB Link + * dwc3_gadget_get_link_state - gets current state of usb link * @dwc: pointer to our context structure * * Caller should take care of locking. This function will @@ -85,7 +84,7 @@ int dwc3_gadget_get_link_state(struct dwc3 *dwc) } /** - * dwc3_gadget_set_link_state - Sets USB Link to a particular State + * dwc3_gadget_set_link_state - sets usb link to a particular state * @dwc: pointer to our context structure * @state: the state to put link into * @@ -143,8 +142,8 @@ int dwc3_gadget_set_link_state(struct dwc3 *dwc, enum dwc3_link_state state) } /** - * dwc3_ep_inc_trb() - Increment a TRB index. - * @index - Pointer to the TRB index to increment. + * dwc3_ep_inc_trb - increment a trb index. + * @index: Pointer to the TRB index to increment. * * The index should never point to the link TRB. After incrementing, * if it is point to the link TRB, wrap around to the beginning. The @@ -157,16 +156,34 @@ static void dwc3_ep_inc_trb(u8 *index) *index = 0; } +/** + * dwc3_ep_inc_enq - increment endpoint's enqueue pointer + * @dep: The endpoint whose enqueue pointer we're incrementing + */ static void dwc3_ep_inc_enq(struct dwc3_ep *dep) { dwc3_ep_inc_trb(&dep->trb_enqueue); } +/** + * dwc3_ep_inc_deq - increment endpoint's dequeue pointer + * @dep: The endpoint whose enqueue pointer we're incrementing + */ static void dwc3_ep_inc_deq(struct dwc3_ep *dep) { dwc3_ep_inc_trb(&dep->trb_dequeue); } +/** + * dwc3_gadget_giveback - call struct usb_request's ->complete callback + * @dep: The endpoint to whom the request belongs to + * @req: The request we're giving back + * @status: completion code for the request + * + * Must be called with controller's lock held and interrupts disabled. This + * function will unmap @req and call its ->complete() callback to notify upper + * layers that it has completed. + */ void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req, int status) { @@ -193,6 +210,15 @@ void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req, pm_runtime_put(dwc->dev); } +/** + * dwc3_send_gadget_generic_command - issue a generic command for the controller + * @dwc: pointer to the controller context + * @cmd: the command to be issued + * @param: command parameter + * + * Caller should take care of locking. Issue @cmd with a given @param to @dwc + * and wait for its completion. + */ int dwc3_send_gadget_generic_command(struct dwc3 *dwc, unsigned cmd, u32 param) { u32 timeout = 500; @@ -225,6 +251,15 @@ int dwc3_send_gadget_generic_command(struct dwc3 *dwc, unsigned cmd, u32 param) static int __dwc3_gadget_wakeup(struct dwc3 *dwc); +/** + * dwc3_send_gadget_ep_cmd - issue an endpoint command + * @dep: the endpoint to which the command is going to be issued + * @cmd: the command to be issued + * @params: parameters to the command + * + * Caller should handle locking. This function will issue @cmd with given + * @params to @dep and wait for its completion. + */ int dwc3_send_gadget_ep_cmd(struct dwc3_ep *dep, unsigned cmd, struct dwc3_gadget_ep_cmd_params *params) { @@ -422,36 +457,38 @@ static void dwc3_free_trb_pool(struct dwc3_ep *dep) static int dwc3_gadget_set_xfer_resource(struct dwc3 *dwc, struct dwc3_ep *dep); /** - * dwc3_gadget_start_config - Configure EP resources + * dwc3_gadget_start_config - configure ep resources * @dwc: pointer to our controller context structure * @dep: endpoint that is being enabled * - * The assignment of transfer resources cannot perfectly follow the - * data book due to the fact that the controller driver does not have - * all knowledge of the configuration in advance. It is given this - * information piecemeal by the composite gadget framework after every - * SET_CONFIGURATION and SET_INTERFACE. Trying to follow the databook - * programming model in this scenario can cause errors. For two - * reasons: + * Issue a %DWC3_DEPCMD_DEPSTARTCFG command to @dep. After the command's + * completion, it will set Transfer Resource for all available endpoints. * - * 1) The databook says to do DEPSTARTCFG for every SET_CONFIGURATION - * and SET_INTERFACE (8.1.5). This is incorrect in the scenario of - * multiple interfaces. + * The assignment of transfer resources cannot perfectly follow the data book + * due to the fact that the controller driver does not have all knowledge of the + * configuration in advance. It is given this information piecemeal by the + * composite gadget framework after every SET_CONFIGURATION and + * SET_INTERFACE. Trying to follow the databook programming model in this + * scenario can cause errors. For two reasons: * - * 2) The databook does not mention doing more DEPXFERCFG for new + * 1) The databook says to do %DWC3_DEPCMD_DEPSTARTCFG for every + * %USB_REQ_SET_CONFIGURATION and %USB_REQ_SET_INTERFACE (8.1.5). This is + * incorrect in the scenario of multiple interfaces. + * + * 2) The databook does not mention doing more %DWC3_DEPCMD_DEPXFERCFG for new * endpoint on alt setting (8.1.6). * * The following simplified method is used instead: * - * All hardware endpoints can be assigned a transfer resource and this - * setting will stay persistent until either a core reset or - * hibernation. So whenever we do a DEPSTARTCFG(0) we can go ahead and - * do DEPXFERCFG for every hardware endpoint as well. We are + * All hardware endpoints can be assigned a transfer resource and this setting + * will stay persistent until either a core reset or hibernation. So whenever we + * do a %DWC3_DEPCMD_DEPSTARTCFG(0) we can go ahead and do + * %DWC3_DEPCMD_DEPXFERCFG for every hardware endpoint as well. We are * guaranteed that there are as many transfer resources as endpoints. * - * This function is called for each endpoint when it is being enabled - * but is triggered only when called for EP0-out, which always happens - * first, and which should only happen in one of the above conditions. + * This function is called for each endpoint when it is being enabled but is + * triggered only when called for EP0-out, which always happens first, and which + * should only happen in one of the above conditions. */ static int dwc3_gadget_start_config(struct dwc3 *dwc, struct dwc3_ep *dep) { @@ -569,11 +606,13 @@ static int dwc3_gadget_set_xfer_resource(struct dwc3 *dwc, struct dwc3_ep *dep) } /** - * __dwc3_gadget_ep_enable - Initializes a HW endpoint + * __dwc3_gadget_ep_enable - initializes a hw endpoint * @dep: endpoint to be initialized - * @desc: USB Endpoint Descriptor + * @modify: if true, modify existing endpoint configuration + * @restore: if true, restore endpoint configuration from scratch buffer * - * Caller should take care of locking + * Caller should take care of locking. Execute all necessary commands to + * initialize a HW endpoint so it can be used by a gadget driver. */ static int __dwc3_gadget_ep_enable(struct dwc3_ep *dep, bool modify, bool restore) @@ -685,11 +724,13 @@ static void dwc3_remove_requests(struct dwc3 *dwc, struct dwc3_ep *dep) } /** - * __dwc3_gadget_ep_disable - Disables a HW endpoint + * __dwc3_gadget_ep_disable - disables a hw endpoint * @dep: the endpoint to disable * - * This function also removes requests which are currently processed ny the - * hardware and those which are not yet scheduled. + * This function undoes what __dwc3_gadget_ep_enable did and also removes + * requests which are currently being processed by the hardware and those which + * are not yet scheduled. + * * Caller should take care of locking. */ static int __dwc3_gadget_ep_disable(struct dwc3_ep *dep) @@ -932,7 +973,7 @@ static void dwc3_prepare_one_trb(struct dwc3_ep *dep, } /** - * dwc3_ep_prev_trb() - Returns the previous TRB in the ring + * dwc3_ep_prev_trb - returns the previous TRB in the ring * @dep: The endpoint with the TRB ring * @index: The index of the current TRB in the ring * @@ -953,7 +994,6 @@ static struct dwc3_trb *dwc3_ep_prev_trb(struct dwc3_ep *dep, u8 index) static u32 dwc3_calc_trbs_left(struct dwc3_ep *dep) { struct dwc3_trb *tmp; - struct dwc3 *dwc = dep->dwc; u8 trbs_left; /* @@ -965,8 +1005,7 @@ static u32 dwc3_calc_trbs_left(struct dwc3_ep *dep) */ if (dep->trb_enqueue == dep->trb_dequeue) { tmp = dwc3_ep_prev_trb(dep, dep->trb_enqueue); - if (dev_WARN_ONCE(dwc->dev, tmp->ctrl & DWC3_TRB_CTRL_HWO, - "%s No TRBS left\n", dep->name)) + if (tmp->ctrl & DWC3_TRB_CTRL_HWO) return 0; return DWC3_TRB_NUM - 1; @@ -1101,6 +1140,17 @@ static void dwc3_prepare_trbs(struct dwc3_ep *dep) } list_for_each_entry_safe(req, n, &dep->pending_list, list) { + struct dwc3 *dwc = dep->dwc; + int ret; + + ret = usb_gadget_map_request_by_dev(dwc->sysdev, &req->request, + dep->direction); + if (ret) + return; + + req->sg = req->request.sg; + req->num_pending_sgs = req->request.num_mapped_sgs; + if (req->num_pending_sgs > 0) dwc3_prepare_one_trb_sg(dep, req); else @@ -1207,7 +1257,7 @@ static void dwc3_gadget_start_isoc(struct dwc3 *dwc, static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req) { struct dwc3 *dwc = dep->dwc; - int ret; + int ret = 0; if (!dep->endpoint.desc) { dev_err(dwc->dev, "%s: can't queue to disabled endpoint\n", @@ -1215,12 +1265,9 @@ static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req) return -ESHUTDOWN; } - if (WARN(req->dep != dep, "request %p belongs to '%s'\n", - &req->request, req->dep->name)) { - dev_err(dwc->dev, "%s: request %p belongs to '%s'\n", - dep->name, &req->request, req->dep->name); + if (WARN(req->dep != dep, "request %pK belongs to '%s'\n", + &req->request, req->dep->name)) return -EINVAL; - } pm_runtime_get(dwc->dev); @@ -1231,14 +1278,6 @@ static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req) trace_dwc3_ep_queue(req); - ret = usb_gadget_map_request_by_dev(dwc->sysdev, &req->request, - dep->direction); - if (ret) - return ret; - - req->sg = req->request.sg; - req->num_pending_sgs = req->request.num_mapped_sgs; - list_add_tail(&req->list, &dep->pending_list); /* @@ -1396,7 +1435,7 @@ static int dwc3_gadget_ep_dequeue(struct usb_ep *ep, } goto out1; } - dev_err(dwc->dev, "request %p was not queued to %s\n", + dev_err(dwc->dev, "request %pK was not queued to %s\n", request, ep->name); ret = -EINVAL; goto out0; @@ -1741,8 +1780,8 @@ static irqreturn_t dwc3_interrupt(int irq, void *_dwc); static irqreturn_t dwc3_thread_interrupt(int irq, void *_dwc); /** - * dwc3_gadget_setup_nump - Calculate and initialize NUMP field of DCFG - * dwc: pointer to our context structure + * dwc3_gadget_setup_nump - calculate and initialize NUMP field of %DWC3_DCFG + * @dwc: pointer to our context structure * * The following looks like complex but it's actually very simple. In order to * calculate the number of packets we can burst at once on OUT transfers, we're @@ -1798,49 +1837,6 @@ static int __dwc3_gadget_start(struct dwc3 *dwc) dwc3_writel(dwc->regs, DWC3_DEV_IMOD(0), 0); } - reg = dwc3_readl(dwc->regs, DWC3_DCFG); - reg &= ~(DWC3_DCFG_SPEED_MASK); - - /** - * WORKAROUND: DWC3 revision < 2.20a have an issue - * which would cause metastability state on Run/Stop - * bit if we try to force the IP to USB2-only mode. - * - * Because of that, we cannot configure the IP to any - * speed other than the SuperSpeed - * - * Refers to: - * - * STAR#9000525659: Clock Domain Crossing on DCTL in - * USB 2.0 Mode - */ - if (dwc->revision < DWC3_REVISION_220A) { - reg |= DWC3_DCFG_SUPERSPEED; - } else { - switch (dwc->maximum_speed) { - case USB_SPEED_LOW: - reg |= DWC3_DCFG_LOWSPEED; - break; - case USB_SPEED_FULL: - reg |= DWC3_DCFG_FULLSPEED; - break; - case USB_SPEED_HIGH: - reg |= DWC3_DCFG_HIGHSPEED; - break; - case USB_SPEED_SUPER_PLUS: - reg |= DWC3_DCFG_SUPERSPEED_PLUS; - break; - default: - dev_err(dwc->dev, "invalid dwc->maximum_speed (%d)\n", - dwc->maximum_speed); - /* fall through */ - case USB_SPEED_SUPER: - reg |= DWC3_DCFG_SUPERSPEED; - break; - } - } - dwc3_writel(dwc->regs, DWC3_DCFG, reg); - /* * We are telling dwc3 that we want to use DCFG.NUMP as ACK TP's NUMP * field instead of letting dwc3 itself calculate that automatically. @@ -1972,6 +1968,63 @@ out: return 0; } +static void dwc3_gadget_set_speed(struct usb_gadget *g, + enum usb_device_speed speed) +{ + struct dwc3 *dwc = gadget_to_dwc(g); + unsigned long flags; + u32 reg; + + spin_lock_irqsave(&dwc->lock, flags); + reg = dwc3_readl(dwc->regs, DWC3_DCFG); + reg &= ~(DWC3_DCFG_SPEED_MASK); + + /* + * WORKAROUND: DWC3 revision < 2.20a have an issue + * which would cause metastability state on Run/Stop + * bit if we try to force the IP to USB2-only mode. + * + * Because of that, we cannot configure the IP to any + * speed other than the SuperSpeed + * + * Refers to: + * + * STAR#9000525659: Clock Domain Crossing on DCTL in + * USB 2.0 Mode + */ + if (dwc->revision < DWC3_REVISION_220A) { + reg |= DWC3_DCFG_SUPERSPEED; + } else { + switch (speed) { + case USB_SPEED_LOW: + reg |= DWC3_DCFG_LOWSPEED; + break; + case USB_SPEED_FULL: + reg |= DWC3_DCFG_FULLSPEED; + break; + case USB_SPEED_HIGH: + reg |= DWC3_DCFG_HIGHSPEED; + break; + case USB_SPEED_SUPER: + reg |= DWC3_DCFG_SUPERSPEED; + break; + case USB_SPEED_SUPER_PLUS: + reg |= DWC3_DCFG_SUPERSPEED_PLUS; + break; + default: + dev_err(dwc->dev, "invalid speed (%d)\n", speed); + + if (dwc->revision & DWC3_REVISION_IS_DWC31) + reg |= DWC3_DCFG_SUPERSPEED_PLUS; + else + reg |= DWC3_DCFG_SUPERSPEED; + } + } + dwc3_writel(dwc->regs, DWC3_DCFG, reg); + + spin_unlock_irqrestore(&dwc->lock, flags); +} + static const struct usb_gadget_ops dwc3_gadget_ops = { .get_frame = dwc3_gadget_get_frame, .wakeup = dwc3_gadget_wakeup, @@ -1979,19 +2032,21 @@ static const struct usb_gadget_ops dwc3_gadget_ops = { .pullup = dwc3_gadget_pullup, .udc_start = dwc3_gadget_start, .udc_stop = dwc3_gadget_stop, + .udc_set_speed = dwc3_gadget_set_speed, }; /* -------------------------------------------------------------------------- */ -static int dwc3_gadget_init_endpoints(struct dwc3 *dwc, u8 num) +static int dwc3_gadget_init_endpoints(struct dwc3 *dwc, u8 total) { struct dwc3_ep *dep; u8 epnum; INIT_LIST_HEAD(&dwc->gadget.ep_list); - for (epnum = 0; epnum < num; epnum++) { + for (epnum = 0; epnum < total; epnum++) { bool direction = epnum & 1; + u8 num = epnum >> 1; dep = kzalloc(sizeof(*dep), GFP_KERNEL); if (!dep) @@ -2003,7 +2058,7 @@ static int dwc3_gadget_init_endpoints(struct dwc3 *dwc, u8 num) dep->regs = dwc->regs + DWC3_DEP_BASE(epnum); dwc->eps[epnum] = dep; - snprintf(dep->name, sizeof(dep->name), "ep%d%s", epnum >> 1, + snprintf(dep->name, sizeof(dep->name), "ep%u%s", num, direction ? "in" : "out"); dep->endpoint.name = dep->name; @@ -2015,39 +2070,39 @@ static int dwc3_gadget_init_endpoints(struct dwc3 *dwc, u8 num) spin_lock_init(&dep->lock); - if (epnum == 0 || epnum == 1) { + if (num == 0) { usb_ep_set_maxpacket_limit(&dep->endpoint, 512); dep->endpoint.maxburst = 1; dep->endpoint.ops = &dwc3_gadget_ep0_ops; - if (!epnum) + if (!direction) dwc->gadget.ep0 = &dep->endpoint; } else if (direction) { int mdwidth; + int kbytes; int size; int ret; - int num; mdwidth = DWC3_MDWIDTH(dwc->hwparams.hwparams0); /* MDWIDTH is represented in bits, we need it in bytes */ mdwidth /= 8; - size = dwc3_readl(dwc->regs, DWC3_GTXFIFOSIZ(epnum >> 1)); + size = dwc3_readl(dwc->regs, DWC3_GTXFIFOSIZ(num)); size = DWC3_GTXFIFOSIZ_TXFDEF(size); /* FIFO Depth is in MDWDITH bytes. Multiply */ size *= mdwidth; - num = size / 1024; - if (num == 0) - num = 1; + kbytes = size / 1024; + if (kbytes == 0) + kbytes = 1; /* - * FIFO sizes account an extra MDWIDTH * (num + 1) bytes for + * FIFO sizes account an extra MDWIDTH * (kbytes + 1) bytes for * internal overhead. We don't really know how these are used, * but documentation say it exists. */ - size -= mdwidth * (num + 1); - size /= num; + size -= mdwidth * (kbytes + 1); + size /= kbytes; usb_ep_set_maxpacket_limit(&dep->endpoint, size); @@ -2073,7 +2128,7 @@ static int dwc3_gadget_init_endpoints(struct dwc3 *dwc, u8 num) return ret; } - if (epnum == 0 || epnum == 1) { + if (num == 0) { dep->endpoint.caps.type_control = true; } else { dep->endpoint.caps.type_iso = true; @@ -2871,7 +2926,7 @@ static void dwc3_gadget_hibernation_interrupt(struct dwc3 *dwc, { unsigned int is_ss = evtinfo & BIT(4); - /** + /* * WORKAROUND: DWC3 revison 2.20a with hibernation support * have a known issue which can cause USB CV TD.9.23 to fail * randomly. @@ -2943,20 +2998,12 @@ static void dwc3_process_event_entry(struct dwc3 *dwc, { trace_dwc3_event(event->raw, dwc); - /* Endpoint IRQ, handle it and return early */ - if (event->type.is_devspec == 0) { - /* depevt */ - return dwc3_endpoint_interrupt(dwc, &event->depevt); - } - - switch (event->type.type) { - case DWC3_EVENT_TYPE_DEV: + if (!event->type.is_devspec) + dwc3_endpoint_interrupt(dwc, &event->depevt); + else if (event->type.type == DWC3_EVENT_TYPE_DEV) dwc3_gadget_interrupt(dwc, &event->devt); - break; - /* REVISIT what to do with Carkit and I2C events ? */ - default: + else dev_err(dwc->dev, "UNKNOWN IRQ type %d\n", event->raw); - } } static irqreturn_t dwc3_process_event_buf(struct dwc3_event_buffer *evt) @@ -3110,7 +3157,7 @@ out: } /** - * dwc3_gadget_init - Initializes gadget related registers + * dwc3_gadget_init - initializes gadget related registers * @dwc: pointer to our controller context structure * * Returns 0 on success otherwise negative errno. diff --git a/drivers/usb/dwc3/gadget.h b/drivers/usb/dwc3/gadget.h index e4602d0..4a32275 100644 --- a/drivers/usb/dwc3/gadget.h +++ b/drivers/usb/dwc3/gadget.h @@ -1,4 +1,4 @@ -/** +/* * gadget.h - DesignWare USB3 DRD Gadget Header * * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com @@ -60,11 +60,25 @@ struct dwc3; #define to_dwc3_request(r) (container_of(r, struct dwc3_request, request)) +/** + * next_request - gets the next request on the given list + * @list: the request list to operate on + * + * Caller should take care of locking. This function return %NULL or the first + * request available on @list. + */ static inline struct dwc3_request *next_request(struct list_head *list) { return list_first_entry_or_null(list, struct dwc3_request, list); } +/** + * dwc3_gadget_move_started_request - move @req to the started_list + * @req: the request to be moved + * + * Caller should take care of locking. This function will move @req from its + * current list to the endpoint's started_list. + */ static inline void dwc3_gadget_move_started_request(struct dwc3_request *req) { struct dwc3_ep *dep = req->dep; @@ -87,10 +101,10 @@ int __dwc3_gadget_ep_set_halt(struct dwc3_ep *dep, int value, int protocol); /** * dwc3_gadget_ep_get_transfer_index - Gets transfer index from HW - * @dwc: DesignWare USB3 Pointer - * @number: DWC endpoint number + * @dep: dwc3 endpoint * - * Caller should take care of locking + * Caller should take care of locking. Returns the transfer resource + * index for a given endpoint. */ static inline u32 dwc3_gadget_ep_get_transfer_index(struct dwc3_ep *dep) { diff --git a/drivers/usb/dwc3/trace.h b/drivers/usb/dwc3/trace.h index f1bd444..6504b11 100644 --- a/drivers/usb/dwc3/trace.h +++ b/drivers/usb/dwc3/trace.h @@ -60,13 +60,15 @@ DECLARE_EVENT_CLASS(dwc3_log_event, TP_STRUCT__entry( __field(u32, event) __field(u32, ep0state) + __dynamic_array(char, str, DWC3_MSG_MAX) ), TP_fast_assign( __entry->event = event; __entry->ep0state = dwc->ep0state; ), TP_printk("event (%08x): %s", __entry->event, - dwc3_decode_event(__entry->event, __entry->ep0state)) + dwc3_decode_event(__get_str(str), __entry->event, + __entry->ep0state)) ); DEFINE_EVENT(dwc3_log_event, dwc3_event, @@ -83,6 +85,7 @@ DECLARE_EVENT_CLASS(dwc3_log_ctrl, __field(__u16, wValue) __field(__u16, wIndex) __field(__u16, wLength) + __dynamic_array(char, str, DWC3_MSG_MAX) ), TP_fast_assign( __entry->bRequestType = ctrl->bRequestType; @@ -91,10 +94,9 @@ DECLARE_EVENT_CLASS(dwc3_log_ctrl, __entry->wIndex = le16_to_cpu(ctrl->wIndex); __entry->wLength = le16_to_cpu(ctrl->wLength); ), - TP_printk("bRequestType %02x bRequest %02x wValue %04x wIndex %04x wLength %d", - __entry->bRequestType, __entry->bRequest, - __entry->wValue, __entry->wIndex, - __entry->wLength + TP_printk("%s", dwc3_decode_ctrl(__get_str(str), __entry->bRequestType, + __entry->bRequest, __entry->wValue, + __entry->wIndex, __entry->wLength) ) ); @@ -107,7 +109,7 @@ DECLARE_EVENT_CLASS(dwc3_log_request, TP_PROTO(struct dwc3_request *req), TP_ARGS(req), TP_STRUCT__entry( - __dynamic_array(char, name, DWC3_MSG_MAX) + __string(name, req->dep->name) __field(struct dwc3_request *, req) __field(unsigned, actual) __field(unsigned, length) @@ -117,7 +119,7 @@ DECLARE_EVENT_CLASS(dwc3_log_request, __field(int, no_interrupt) ), TP_fast_assign( - snprintf(__get_str(name), DWC3_MSG_MAX, "%s", req->dep->name); + __assign_str(name, req->dep->name); __entry->req = req; __entry->actual = req->request.actual; __entry->length = req->request.length; @@ -190,7 +192,7 @@ DECLARE_EVENT_CLASS(dwc3_log_gadget_ep_cmd, struct dwc3_gadget_ep_cmd_params *params, int cmd_status), TP_ARGS(dep, cmd, params, cmd_status), TP_STRUCT__entry( - __dynamic_array(char, name, DWC3_MSG_MAX) + __string(name, dep->name) __field(unsigned int, cmd) __field(u32, param0) __field(u32, param1) @@ -198,7 +200,7 @@ DECLARE_EVENT_CLASS(dwc3_log_gadget_ep_cmd, __field(int, cmd_status) ), TP_fast_assign( - snprintf(__get_str(name), DWC3_MSG_MAX, "%s", dep->name); + __assign_str(name, dep->name); __entry->cmd = cmd; __entry->param0 = params->param0; __entry->param1 = params->param1; @@ -223,7 +225,7 @@ DECLARE_EVENT_CLASS(dwc3_log_trb, TP_PROTO(struct dwc3_ep *dep, struct dwc3_trb *trb), TP_ARGS(dep, trb), TP_STRUCT__entry( - __dynamic_array(char, name, DWC3_MSG_MAX) + __string(name, dep->name) __field(struct dwc3_trb *, trb) __field(u32, allocated) __field(u32, queued) @@ -234,7 +236,7 @@ DECLARE_EVENT_CLASS(dwc3_log_trb, __field(u32, type) ), TP_fast_assign( - snprintf(__get_str(name), DWC3_MSG_MAX, "%s", dep->name); + __assign_str(name, dep->name); __entry->trb = trb; __entry->allocated = dep->allocated_requests; __entry->queued = dep->queued_requests; @@ -291,7 +293,7 @@ DECLARE_EVENT_CLASS(dwc3_log_ep, TP_PROTO(struct dwc3_ep *dep), TP_ARGS(dep), TP_STRUCT__entry( - __dynamic_array(char, name, DWC3_MSG_MAX) + __string(name, dep->name) __field(unsigned, maxpacket) __field(unsigned, maxpacket_limit) __field(unsigned, max_streams) @@ -302,7 +304,7 @@ DECLARE_EVENT_CLASS(dwc3_log_ep, __field(u8, trb_dequeue) ), TP_fast_assign( - snprintf(__get_str(name), DWC3_MSG_MAX, "%s", dep->name); + __assign_str(name, dep->name); __entry->maxpacket = dep->endpoint.maxpacket; __entry->maxpacket_limit = dep->endpoint.maxpacket_limit; __entry->max_streams = dep->endpoint.max_streams; diff --git a/drivers/usb/dwc3/ulpi.c b/drivers/usb/dwc3/ulpi.c index bd86f84..e87ce8e 100644 --- a/drivers/usb/dwc3/ulpi.c +++ b/drivers/usb/dwc3/ulpi.c @@ -41,6 +41,12 @@ static int dwc3_ulpi_read(struct device *dev, u8 addr) u32 reg; int ret; + reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0)); + if (reg & DWC3_GUSB2PHYCFG_SUSPHY) { + reg &= ~DWC3_GUSB2PHYCFG_SUSPHY; + dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg); + } + reg = DWC3_GUSB2PHYACC_NEWREGREQ | DWC3_ULPI_ADDR(addr); dwc3_writel(dwc->regs, DWC3_GUSB2PHYACC(0), reg); @@ -58,6 +64,12 @@ static int dwc3_ulpi_write(struct device *dev, u8 addr, u8 val) struct dwc3 *dwc = dev_get_drvdata(dev); u32 reg; + reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0)); + if (reg & DWC3_GUSB2PHYCFG_SUSPHY) { + reg &= ~DWC3_GUSB2PHYCFG_SUSPHY; + dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg); + } + reg = DWC3_GUSB2PHYACC_NEWREGREQ | DWC3_ULPI_ADDR(addr); reg |= DWC3_GUSB2PHYACC_WRITE | val; dwc3_writel(dwc->regs, DWC3_GUSB2PHYACC(0), reg); diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig index c164d6b..35cc641 100644 --- a/drivers/usb/gadget/Kconfig +++ b/drivers/usb/gadget/Kconfig @@ -41,7 +41,7 @@ menuconfig USB_GADGET don't have this kind of hardware (except maybe inside Linux PDAs). For more information, see <http://www.linux-usb.org/gadget> and - the kernel DocBook documentation for this API. + the kernel documentation for this API. if USB_GADGET @@ -158,6 +158,9 @@ config USB_U_SERIAL config USB_U_ETHER tristate +config USB_U_AUDIO + tristate + config USB_F_SERIAL tristate @@ -191,6 +194,9 @@ config USB_F_FS config USB_F_UAC1 tristate +config USB_F_UAC1_LEGACY + tristate + config USB_F_UAC2 tristate @@ -368,12 +374,30 @@ config USB_CONFIGFS_F_UAC1 depends on SND select USB_LIBCOMPOSITE select SND_PCM + select USB_U_AUDIO select USB_F_UAC1 help This Audio function implements 1 AudioControl interface, 1 AudioStreaming Interface each for USB-OUT and USB-IN. - This driver requires a real Audio codec to be present - on the device. + This driver doesn't expect any real Audio codec to be present + on the device - the audio streams are simply sinked to and + sourced from a virtual ALSA sound card created. The user-space + application may choose to do whatever it wants with the data + received from the USB Host and choose to provide whatever it + wants as audio data to the USB Host. + +config USB_CONFIGFS_F_UAC1_LEGACY + bool "Audio Class 1.0 (legacy implementation)" + depends on USB_CONFIGFS + depends on SND + select USB_LIBCOMPOSITE + select SND_PCM + select USB_F_UAC1_LEGACY + help + This Audio function implements 1 AudioControl interface, + 1 AudioStreaming Interface each for USB-OUT and USB-IN. + This is a legacy driver and requires a real Audio codec + to be present on the device. config USB_CONFIGFS_F_UAC2 bool "Audio Class 2.0" @@ -381,6 +405,7 @@ config USB_CONFIGFS_F_UAC2 depends on SND select USB_LIBCOMPOSITE select SND_PCM + select USB_U_AUDIO select USB_F_UAC2 help This Audio function is compatible with USB Audio Class diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 45b5540..dd74c99 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -610,7 +610,6 @@ static int count_configs(struct usb_composite_dev *cdev, unsigned type) static int bos_desc(struct usb_composite_dev *cdev) { struct usb_ext_cap_descriptor *usb_ext; - struct usb_ss_cap_descriptor *ss_cap; struct usb_dcd_config_params dcd_config_params; struct usb_bos_descriptor *bos = cdev->req->buf; @@ -636,29 +635,35 @@ static int bos_desc(struct usb_composite_dev *cdev) * The Superspeed USB Capability descriptor shall be implemented by all * SuperSpeed devices. */ - ss_cap = cdev->req->buf + le16_to_cpu(bos->wTotalLength); - bos->bNumDeviceCaps++; - le16_add_cpu(&bos->wTotalLength, USB_DT_USB_SS_CAP_SIZE); - ss_cap->bLength = USB_DT_USB_SS_CAP_SIZE; - ss_cap->bDescriptorType = USB_DT_DEVICE_CAPABILITY; - ss_cap->bDevCapabilityType = USB_SS_CAP_TYPE; - ss_cap->bmAttributes = 0; /* LTM is not supported yet */ - ss_cap->wSpeedSupported = cpu_to_le16(USB_LOW_SPEED_OPERATION | - USB_FULL_SPEED_OPERATION | - USB_HIGH_SPEED_OPERATION | - USB_5GBPS_OPERATION); - ss_cap->bFunctionalitySupport = USB_LOW_SPEED_OPERATION; - - /* Get Controller configuration */ - if (cdev->gadget->ops->get_config_params) - cdev->gadget->ops->get_config_params(&dcd_config_params); - else { - dcd_config_params.bU1devExitLat = USB_DEFAULT_U1_DEV_EXIT_LAT; - dcd_config_params.bU2DevExitLat = - cpu_to_le16(USB_DEFAULT_U2_DEV_EXIT_LAT); + if (gadget_is_superspeed(cdev->gadget)) { + struct usb_ss_cap_descriptor *ss_cap; + + ss_cap = cdev->req->buf + le16_to_cpu(bos->wTotalLength); + bos->bNumDeviceCaps++; + le16_add_cpu(&bos->wTotalLength, USB_DT_USB_SS_CAP_SIZE); + ss_cap->bLength = USB_DT_USB_SS_CAP_SIZE; + ss_cap->bDescriptorType = USB_DT_DEVICE_CAPABILITY; + ss_cap->bDevCapabilityType = USB_SS_CAP_TYPE; + ss_cap->bmAttributes = 0; /* LTM is not supported yet */ + ss_cap->wSpeedSupported = cpu_to_le16(USB_LOW_SPEED_OPERATION | + USB_FULL_SPEED_OPERATION | + USB_HIGH_SPEED_OPERATION | + USB_5GBPS_OPERATION); + ss_cap->bFunctionalitySupport = USB_LOW_SPEED_OPERATION; + + /* Get Controller configuration */ + if (cdev->gadget->ops->get_config_params) { + cdev->gadget->ops->get_config_params( + &dcd_config_params); + } else { + dcd_config_params.bU1devExitLat = + USB_DEFAULT_U1_DEV_EXIT_LAT; + dcd_config_params.bU2DevExitLat = + cpu_to_le16(USB_DEFAULT_U2_DEV_EXIT_LAT); + } + ss_cap->bU1devExitLat = dcd_config_params.bU1devExitLat; + ss_cap->bU2DevExitLat = dcd_config_params.bU2DevExitLat; } - ss_cap->bU1devExitLat = dcd_config_params.bU1devExitLat; - ss_cap->bU2DevExitLat = dcd_config_params.bU2DevExitLat; /* The SuperSpeedPlus USB Device Capability descriptor */ if (gadget_is_superspeed_plus(cdev->gadget)) { @@ -1602,7 +1607,10 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) cdev->desc.bcdUSB = cpu_to_le16(0x0210); } } else { - cdev->desc.bcdUSB = cpu_to_le16(0x0200); + if (gadget->lpm_capable) + cdev->desc.bcdUSB = cpu_to_le16(0x0201); + else + cdev->desc.bcdUSB = cpu_to_le16(0x0200); } value = min(w_length, (u16) sizeof cdev->desc); @@ -1633,7 +1641,8 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) value = min(w_length, (u16) value); break; case USB_DT_BOS: - if (gadget_is_superspeed(gadget)) { + if (gadget_is_superspeed(gadget) || + gadget->lpm_capable) { value = bos_desc(cdev); value = min(w_length, (u16) value); } diff --git a/drivers/usb/gadget/configfs.c b/drivers/usb/gadget/configfs.c index cbff3b0..a22a892 100644 --- a/drivers/usb/gadget/configfs.c +++ b/drivers/usb/gadget/configfs.c @@ -738,7 +738,7 @@ static inline struct gadget_info *os_desc_item_to_gadget_info( static ssize_t os_desc_use_show(struct config_item *item, char *page) { - return sprintf(page, "%d", + return sprintf(page, "%d\n", os_desc_item_to_gadget_info(item)->use_os_desc); } @@ -762,7 +762,7 @@ static ssize_t os_desc_use_store(struct config_item *item, const char *page, static ssize_t os_desc_b_vendor_code_show(struct config_item *item, char *page) { - return sprintf(page, "%d", + return sprintf(page, "0x%02x\n", os_desc_item_to_gadget_info(item)->b_vendor_code); } @@ -787,9 +787,13 @@ static ssize_t os_desc_b_vendor_code_store(struct config_item *item, static ssize_t os_desc_qw_sign_show(struct config_item *item, char *page) { struct gadget_info *gi = os_desc_item_to_gadget_info(item); + int res; + + res = utf16s_to_utf8s((wchar_t *) gi->qw_sign, OS_STRING_QW_SIGN_LEN, + UTF16_LITTLE_ENDIAN, page, PAGE_SIZE - 1); + page[res++] = '\n'; - memcpy(page, gi->qw_sign, OS_STRING_QW_SIGN_LEN); - return OS_STRING_QW_SIGN_LEN; + return res; } static ssize_t os_desc_qw_sign_store(struct config_item *item, const char *page, @@ -900,7 +904,7 @@ static inline struct usb_os_desc_ext_prop static ssize_t ext_prop_type_show(struct config_item *item, char *page) { - return sprintf(page, "%d", to_usb_os_desc_ext_prop(item)->type); + return sprintf(page, "%d\n", to_usb_os_desc_ext_prop(item)->type); } static ssize_t ext_prop_type_store(struct config_item *item, diff --git a/drivers/usb/gadget/function/Makefile b/drivers/usb/gadget/function/Makefile index cb8c225..86e8252 100644 --- a/drivers/usb/gadget/function/Makefile +++ b/drivers/usb/gadget/function/Makefile @@ -32,8 +32,11 @@ usb_f_mass_storage-y := f_mass_storage.o storage_common.o obj-$(CONFIG_USB_F_MASS_STORAGE)+= usb_f_mass_storage.o usb_f_fs-y := f_fs.o obj-$(CONFIG_USB_F_FS) += usb_f_fs.o -usb_f_uac1-y := f_uac1.o u_uac1.o +obj-$(CONFIG_USB_U_AUDIO) += u_audio.o +usb_f_uac1-y := f_uac1.o obj-$(CONFIG_USB_F_UAC1) += usb_f_uac1.o +usb_f_uac1_legacy-y := f_uac1_legacy.o u_uac1_legacy.o +obj-$(CONFIG_USB_F_UAC1_LEGACY) += usb_f_uac1_legacy.o usb_f_uac2-y := f_uac2.o obj-$(CONFIG_USB_F_UAC2) += usb_f_uac2.o usb_f_uvc-y := f_uvc.o uvc_queue.o uvc_v4l2.o uvc_video.o uvc_configfs.o diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c index 47dda34..d21874b 100644 --- a/drivers/usb/gadget/function/f_fs.c +++ b/drivers/usb/gadget/function/f_fs.c @@ -127,7 +127,6 @@ struct ffs_ep { struct ffs_epfile { /* Protects ep->ep and ep->req. */ struct mutex mutex; - wait_queue_head_t wait; struct ffs_data *ffs; struct ffs_ep *ep; /* P: ffs->eps_lock */ @@ -889,7 +888,8 @@ static ssize_t ffs_epfile_io(struct file *file, struct ffs_io_data *io_data) if (file->f_flags & O_NONBLOCK) return -EAGAIN; - ret = wait_event_interruptible(epfile->wait, (ep = epfile->ep)); + ret = wait_event_interruptible( + epfile->ffs->wait, (ep = epfile->ep)); if (ret) return -EINTR; } @@ -1189,6 +1189,7 @@ static long ffs_epfile_ioctl(struct file *file, unsigned code, unsigned long value) { struct ffs_epfile *epfile = file->private_data; + struct ffs_ep *ep; int ret; ENTER(); @@ -1196,50 +1197,65 @@ static long ffs_epfile_ioctl(struct file *file, unsigned code, if (WARN_ON(epfile->ffs->state != FFS_ACTIVE)) return -ENODEV; + /* Wait for endpoint to be enabled */ + ep = epfile->ep; + if (!ep) { + if (file->f_flags & O_NONBLOCK) + return -EAGAIN; + + ret = wait_event_interruptible( + epfile->ffs->wait, (ep = epfile->ep)); + if (ret) + return -EINTR; + } + spin_lock_irq(&epfile->ffs->eps_lock); - if (likely(epfile->ep)) { - switch (code) { - case FUNCTIONFS_FIFO_STATUS: - ret = usb_ep_fifo_status(epfile->ep->ep); - break; - case FUNCTIONFS_FIFO_FLUSH: - usb_ep_fifo_flush(epfile->ep->ep); - ret = 0; - break; - case FUNCTIONFS_CLEAR_HALT: - ret = usb_ep_clear_halt(epfile->ep->ep); - break; - case FUNCTIONFS_ENDPOINT_REVMAP: - ret = epfile->ep->num; - break; - case FUNCTIONFS_ENDPOINT_DESC: - { - int desc_idx; - struct usb_endpoint_descriptor *desc; - switch (epfile->ffs->gadget->speed) { - case USB_SPEED_SUPER: - desc_idx = 2; - break; - case USB_SPEED_HIGH: - desc_idx = 1; - break; - default: - desc_idx = 0; - } - desc = epfile->ep->descs[desc_idx]; + /* In the meantime, endpoint got disabled or changed. */ + if (epfile->ep != ep) { + spin_unlock_irq(&epfile->ffs->eps_lock); + return -ESHUTDOWN; + } - spin_unlock_irq(&epfile->ffs->eps_lock); - ret = copy_to_user((void *)value, desc, desc->bLength); - if (ret) - ret = -EFAULT; - return ret; - } + switch (code) { + case FUNCTIONFS_FIFO_STATUS: + ret = usb_ep_fifo_status(epfile->ep->ep); + break; + case FUNCTIONFS_FIFO_FLUSH: + usb_ep_fifo_flush(epfile->ep->ep); + ret = 0; + break; + case FUNCTIONFS_CLEAR_HALT: + ret = usb_ep_clear_halt(epfile->ep->ep); + break; + case FUNCTIONFS_ENDPOINT_REVMAP: + ret = epfile->ep->num; + break; + case FUNCTIONFS_ENDPOINT_DESC: + { + int desc_idx; + struct usb_endpoint_descriptor *desc; + + switch (epfile->ffs->gadget->speed) { + case USB_SPEED_SUPER: + desc_idx = 2; + break; + case USB_SPEED_HIGH: + desc_idx = 1; + break; default: - ret = -ENOTTY; + desc_idx = 0; } - } else { - ret = -ENODEV; + desc = epfile->ep->descs[desc_idx]; + + spin_unlock_irq(&epfile->ffs->eps_lock); + ret = copy_to_user((void *)value, desc, desc->bLength); + if (ret) + ret = -EFAULT; + return ret; + } + default: + ret = -ENOTTY; } spin_unlock_irq(&epfile->ffs->eps_lock); @@ -1593,7 +1609,8 @@ static void ffs_data_put(struct ffs_data *ffs) pr_info("%s(): freeing\n", __func__); ffs_data_clear(ffs); BUG_ON(waitqueue_active(&ffs->ev.waitq) || - waitqueue_active(&ffs->ep0req_completion.wait)); + waitqueue_active(&ffs->ep0req_completion.wait) || + waitqueue_active(&ffs->wait)); kfree(ffs->dev_name); kfree(ffs); } @@ -1640,6 +1657,7 @@ static struct ffs_data *ffs_data_new(void) mutex_init(&ffs->mutex); spin_lock_init(&ffs->eps_lock); init_waitqueue_head(&ffs->ev.waitq); + init_waitqueue_head(&ffs->wait); init_completion(&ffs->ep0req_completion); /* XXX REVISIT need to update it in some places, or do we? */ @@ -1761,7 +1779,6 @@ static int ffs_epfiles_create(struct ffs_data *ffs) for (i = 1; i <= count; ++i, ++epfile) { epfile->ffs = ffs; mutex_init(&epfile->mutex); - init_waitqueue_head(&epfile->wait); if (ffs->user_flags & FUNCTIONFS_VIRTUAL_ADDR) sprintf(epfile->name, "ep%02x", ffs->eps_addrmap[i]); else @@ -1786,8 +1803,7 @@ static void ffs_epfiles_destroy(struct ffs_epfile *epfiles, unsigned count) ENTER(); for (; count; --count, ++epfile) { - BUG_ON(mutex_is_locked(&epfile->mutex) || - waitqueue_active(&epfile->wait)); + BUG_ON(mutex_is_locked(&epfile->mutex)); if (epfile->dentry) { d_delete(epfile->dentry); dput(epfile->dentry); @@ -1874,11 +1890,11 @@ static int ffs_func_eps_enable(struct ffs_function *func) break; } - wake_up(&epfile->wait); - ++ep; ++epfile; } + + wake_up_interruptible(&ffs->wait); spin_unlock_irqrestore(&func->ffs->eps_lock, flags); return ret; diff --git a/drivers/usb/gadget/function/f_mass_storage.c b/drivers/usb/gadget/function/f_mass_storage.c index 74d57d6..e80b9c1 100644 --- a/drivers/usb/gadget/function/f_mass_storage.c +++ b/drivers/usb/gadget/function/f_mass_storage.c @@ -260,12 +260,13 @@ struct fsg_common { struct usb_gadget *gadget; struct usb_composite_dev *cdev; struct fsg_dev *fsg, *new_fsg; + wait_queue_head_t io_wait; wait_queue_head_t fsg_wait; /* filesem protects: backing files in use */ struct rw_semaphore filesem; - /* lock protects: state, all the req_busy's */ + /* lock protects: state and thread_task */ spinlock_t lock; struct usb_ep *ep0; /* Copy of gadget->ep0 */ @@ -303,7 +304,6 @@ struct fsg_common { unsigned int running:1; unsigned int sysfs:1; - int thread_wakeup_needed; struct completion thread_notifier; struct task_struct *thread_task; @@ -355,7 +355,7 @@ typedef void (*fsg_routine_t)(struct fsg_dev *); static int exception_in_progress(struct fsg_common *common) { - return common->state > FSG_STATE_IDLE; + return common->state > FSG_STATE_NORMAL; } /* Make bulk-out requests be divisible by the maxpacket size */ @@ -393,20 +393,6 @@ static int fsg_set_halt(struct fsg_dev *fsg, struct usb_ep *ep) /* These routines may be called in process context or in_irq */ -/* Caller must hold fsg->lock */ -static void wakeup_thread(struct fsg_common *common) -{ - /* - * Ensure the reading of thread_wakeup_needed - * and the writing of bh->state are completed - */ - smp_mb(); - /* Tell the main thread that something has happened */ - common->thread_wakeup_needed = 1; - if (common->thread_task) - wake_up_process(common->thread_task); -} - static void raise_exception(struct fsg_common *common, enum fsg_state new_state) { unsigned long flags; @@ -460,13 +446,9 @@ static void bulk_in_complete(struct usb_ep *ep, struct usb_request *req) if (req->status == -ECONNRESET) /* Request was cancelled */ usb_ep_fifo_flush(ep); - /* Hold the lock while we update the request and buffer states */ - smp_wmb(); - spin_lock(&common->lock); - bh->inreq_busy = 0; - bh->state = BUF_STATE_EMPTY; - wakeup_thread(common); - spin_unlock(&common->lock); + /* Synchronize with the smp_load_acquire() in sleep_thread() */ + smp_store_release(&bh->state, BUF_STATE_EMPTY); + wake_up(&common->io_wait); } static void bulk_out_complete(struct usb_ep *ep, struct usb_request *req) @@ -481,13 +463,9 @@ static void bulk_out_complete(struct usb_ep *ep, struct usb_request *req) if (req->status == -ECONNRESET) /* Request was cancelled */ usb_ep_fifo_flush(ep); - /* Hold the lock while we update the request and buffer states */ - smp_wmb(); - spin_lock(&common->lock); - bh->outreq_busy = 0; - bh->state = BUF_STATE_FULL; - wakeup_thread(common); - spin_unlock(&common->lock); + /* Synchronize with the smp_load_acquire() in sleep_thread() */ + smp_store_release(&bh->state, BUF_STATE_FULL); + wake_up(&common->io_wait); } static int _fsg_common_get_max_lun(struct fsg_common *common) @@ -532,7 +510,7 @@ static int fsg_setup(struct usb_function *f, * and reinitialize our state. */ DBG(fsg, "bulk reset request\n"); - raise_exception(fsg->common, FSG_STATE_RESET); + raise_exception(fsg->common, FSG_STATE_PROTOCOL_RESET); return USB_GADGET_DELAYED_STATUS; case US_BULK_GET_MAX_LUN: @@ -563,43 +541,39 @@ static int fsg_setup(struct usb_function *f, /* All the following routines run in process context */ /* Use this for bulk or interrupt transfers, not ep0 */ -static void start_transfer(struct fsg_dev *fsg, struct usb_ep *ep, - struct usb_request *req, int *pbusy, - enum fsg_buffer_state *state) +static int start_transfer(struct fsg_dev *fsg, struct usb_ep *ep, + struct usb_request *req) { int rc; if (ep == fsg->bulk_in) dump_msg(fsg, "bulk-in", req->buf, req->length); - spin_lock_irq(&fsg->common->lock); - *pbusy = 1; - *state = BUF_STATE_BUSY; - spin_unlock_irq(&fsg->common->lock); - rc = usb_ep_queue(ep, req, GFP_KERNEL); - if (rc == 0) - return; /* All good, we're done */ - - *pbusy = 0; - *state = BUF_STATE_EMPTY; + if (rc) { - /* We can't do much more than wait for a reset */ + /* We can't do much more than wait for a reset */ + req->status = rc; - /* - * Note: currently the net2280 driver fails zero-length - * submissions if DMA is enabled. - */ - if (rc != -ESHUTDOWN && !(rc == -EOPNOTSUPP && req->length == 0)) - WARNING(fsg, "error in submission: %s --> %d\n", ep->name, rc); + /* + * Note: currently the net2280 driver fails zero-length + * submissions if DMA is enabled. + */ + if (rc != -ESHUTDOWN && + !(rc == -EOPNOTSUPP && req->length == 0)) + WARNING(fsg, "error in submission: %s --> %d\n", + ep->name, rc); + } + return rc; } static bool start_in_transfer(struct fsg_common *common, struct fsg_buffhd *bh) { if (!fsg_is_set(common)) return false; - start_transfer(common->fsg, common->fsg->bulk_in, - bh->inreq, &bh->inreq_busy, &bh->state); + bh->state = BUF_STATE_SENDING; + if (start_transfer(common->fsg, common->fsg->bulk_in, bh->inreq)) + bh->state = BUF_STATE_EMPTY; return true; } @@ -607,37 +581,31 @@ static bool start_out_transfer(struct fsg_common *common, struct fsg_buffhd *bh) { if (!fsg_is_set(common)) return false; - start_transfer(common->fsg, common->fsg->bulk_out, - bh->outreq, &bh->outreq_busy, &bh->state); + bh->state = BUF_STATE_RECEIVING; + if (start_transfer(common->fsg, common->fsg->bulk_out, bh->outreq)) + bh->state = BUF_STATE_FULL; return true; } -static int sleep_thread(struct fsg_common *common, bool can_freeze) +static int sleep_thread(struct fsg_common *common, bool can_freeze, + struct fsg_buffhd *bh) { - int rc = 0; - - /* Wait until a signal arrives or we are woken up */ - for (;;) { - if (can_freeze) - try_to_freeze(); - set_current_state(TASK_INTERRUPTIBLE); - if (signal_pending(current)) { - rc = -EINTR; - break; - } - if (common->thread_wakeup_needed) - break; - schedule(); - } - __set_current_state(TASK_RUNNING); - common->thread_wakeup_needed = 0; + int rc; - /* - * Ensure the writing of thread_wakeup_needed - * and the reading of bh->state are completed - */ - smp_mb(); - return rc; + /* Wait until a signal arrives or bh is no longer busy */ + if (can_freeze) + /* + * synchronize with the smp_store_release(&bh->state) in + * bulk_in_complete() or bulk_out_complete() + */ + rc = wait_event_freezable(common->io_wait, + bh && smp_load_acquire(&bh->state) >= + BUF_STATE_EMPTY); + else + rc = wait_event_interruptible(common->io_wait, + bh && smp_load_acquire(&bh->state) >= + BUF_STATE_EMPTY); + return rc ? -EINTR : 0; } @@ -697,11 +665,9 @@ static int do_read(struct fsg_common *common) /* Wait for the next buffer to become available */ bh = common->next_buffhd_to_fill; - while (bh->state != BUF_STATE_EMPTY) { - rc = sleep_thread(common, false); - if (rc) - return rc; - } + rc = sleep_thread(common, false, bh); + if (rc) + return rc; /* * If we were asked to read past the end of file, @@ -878,84 +844,80 @@ static int do_write(struct fsg_common *common) bh = common->next_buffhd_to_drain; if (bh->state == BUF_STATE_EMPTY && !get_some_more) break; /* We stopped early */ - if (bh->state == BUF_STATE_FULL) { - smp_rmb(); - common->next_buffhd_to_drain = bh->next; - bh->state = BUF_STATE_EMPTY; - - /* Did something go wrong with the transfer? */ - if (bh->outreq->status != 0) { - curlun->sense_data = SS_COMMUNICATION_FAILURE; - curlun->sense_data_info = + + /* Wait for the data to be received */ + rc = sleep_thread(common, false, bh); + if (rc) + return rc; + + common->next_buffhd_to_drain = bh->next; + bh->state = BUF_STATE_EMPTY; + + /* Did something go wrong with the transfer? */ + if (bh->outreq->status != 0) { + curlun->sense_data = SS_COMMUNICATION_FAILURE; + curlun->sense_data_info = file_offset >> curlun->blkbits; - curlun->info_valid = 1; - break; - } + curlun->info_valid = 1; + break; + } - amount = bh->outreq->actual; - if (curlun->file_length - file_offset < amount) { - LERROR(curlun, - "write %u @ %llu beyond end %llu\n", + amount = bh->outreq->actual; + if (curlun->file_length - file_offset < amount) { + LERROR(curlun, "write %u @ %llu beyond end %llu\n", amount, (unsigned long long)file_offset, (unsigned long long)curlun->file_length); - amount = curlun->file_length - file_offset; - } + amount = curlun->file_length - file_offset; + } - /* Don't accept excess data. The spec doesn't say - * what to do in this case. We'll ignore the error. - */ - amount = min(amount, bh->bulk_out_intended_length); - - /* Don't write a partial block */ - amount = round_down(amount, curlun->blksize); - if (amount == 0) - goto empty_write; - - /* Perform the write */ - file_offset_tmp = file_offset; - nwritten = vfs_write(curlun->filp, - (char __user *)bh->buf, - amount, &file_offset_tmp); - VLDBG(curlun, "file write %u @ %llu -> %d\n", amount, - (unsigned long long)file_offset, (int)nwritten); - if (signal_pending(current)) - return -EINTR; /* Interrupted! */ - - if (nwritten < 0) { - LDBG(curlun, "error in file write: %d\n", - (int)nwritten); - nwritten = 0; - } else if (nwritten < amount) { - LDBG(curlun, "partial file write: %d/%u\n", - (int)nwritten, amount); - nwritten = round_down(nwritten, curlun->blksize); - } - file_offset += nwritten; - amount_left_to_write -= nwritten; - common->residue -= nwritten; + /* + * Don't accept excess data. The spec doesn't say + * what to do in this case. We'll ignore the error. + */ + amount = min(amount, bh->bulk_out_intended_length); - /* If an error occurred, report it and its position */ - if (nwritten < amount) { - curlun->sense_data = SS_WRITE_ERROR; - curlun->sense_data_info = + /* Don't write a partial block */ + amount = round_down(amount, curlun->blksize); + if (amount == 0) + goto empty_write; + + /* Perform the write */ + file_offset_tmp = file_offset; + nwritten = vfs_write(curlun->filp, (char __user *)bh->buf, + amount, &file_offset_tmp); + VLDBG(curlun, "file write %u @ %llu -> %d\n", amount, + (unsigned long long)file_offset, (int)nwritten); + if (signal_pending(current)) + return -EINTR; /* Interrupted! */ + + if (nwritten < 0) { + LDBG(curlun, "error in file write: %d\n", + (int) nwritten); + nwritten = 0; + } else if (nwritten < amount) { + LDBG(curlun, "partial file write: %d/%u\n", + (int) nwritten, amount); + nwritten = round_down(nwritten, curlun->blksize); + } + file_offset += nwritten; + amount_left_to_write -= nwritten; + common->residue -= nwritten; + + /* If an error occurred, report it and its position */ + if (nwritten < amount) { + curlun->sense_data = SS_WRITE_ERROR; + curlun->sense_data_info = file_offset >> curlun->blkbits; - curlun->info_valid = 1; - break; - } + curlun->info_valid = 1; + break; + } empty_write: - /* Did the host decide to stop early? */ - if (bh->outreq->actual < bh->bulk_out_intended_length) { - common->short_packet_received = 1; - break; - } - continue; + /* Did the host decide to stop early? */ + if (bh->outreq->actual < bh->bulk_out_intended_length) { + common->short_packet_received = 1; + break; } - - /* Wait for something to happen */ - rc = sleep_thread(common, false); - if (rc) - return rc; } return -EIO; /* No default reply */ @@ -1480,7 +1442,7 @@ static int wedge_bulk_in_endpoint(struct fsg_dev *fsg) static int throw_away_data(struct fsg_common *common) { - struct fsg_buffhd *bh; + struct fsg_buffhd *bh, *bh2; u32 amount; int rc; @@ -1488,26 +1450,10 @@ static int throw_away_data(struct fsg_common *common) bh->state != BUF_STATE_EMPTY || common->usb_amount_left > 0; bh = common->next_buffhd_to_drain) { - /* Throw away the data in a filled buffer */ - if (bh->state == BUF_STATE_FULL) { - smp_rmb(); - bh->state = BUF_STATE_EMPTY; - common->next_buffhd_to_drain = bh->next; - - /* A short packet or an error ends everything */ - if (bh->outreq->actual < bh->bulk_out_intended_length || - bh->outreq->status != 0) { - raise_exception(common, - FSG_STATE_ABORT_BULK_OUT); - return -EINTR; - } - continue; - } - /* Try to submit another request if we need one */ - bh = common->next_buffhd_to_fill; - if (bh->state == BUF_STATE_EMPTY - && common->usb_amount_left > 0) { + bh2 = common->next_buffhd_to_fill; + if (bh2->state == BUF_STATE_EMPTY && + common->usb_amount_left > 0) { amount = min(common->usb_amount_left, FSG_BUFLEN); /* @@ -1515,19 +1461,30 @@ static int throw_away_data(struct fsg_common *common) * equal to the buffer size, which is divisible by * the bulk-out maxpacket size. */ - set_bulk_out_req_length(common, bh, amount); - if (!start_out_transfer(common, bh)) + set_bulk_out_req_length(common, bh2, amount); + if (!start_out_transfer(common, bh2)) /* Dunno what to do if common->fsg is NULL */ return -EIO; - common->next_buffhd_to_fill = bh->next; + common->next_buffhd_to_fill = bh2->next; common->usb_amount_left -= amount; continue; } - /* Otherwise wait for something to happen */ - rc = sleep_thread(common, true); + /* Wait for the data to be received */ + rc = sleep_thread(common, false, bh); if (rc) return rc; + + /* Throw away the data in a filled buffer */ + bh->state = BUF_STATE_EMPTY; + common->next_buffhd_to_drain = bh->next; + + /* A short packet or an error ends everything */ + if (bh->outreq->actual < bh->bulk_out_intended_length || + bh->outreq->status != 0) { + raise_exception(common, FSG_STATE_ABORT_BULK_OUT); + return -EINTR; + } } return 0; } @@ -1634,7 +1591,7 @@ static int finish_reply(struct fsg_common *common) return rc; } -static int send_status(struct fsg_common *common) +static void send_status(struct fsg_common *common) { struct fsg_lun *curlun = common->curlun; struct fsg_buffhd *bh; @@ -1645,11 +1602,9 @@ static int send_status(struct fsg_common *common) /* Wait for the next buffer to become available */ bh = common->next_buffhd_to_fill; - while (bh->state != BUF_STATE_EMPTY) { - rc = sleep_thread(common, true); - if (rc) - return rc; - } + rc = sleep_thread(common, false, bh); + if (rc) + return; if (curlun) { sd = curlun->sense_data; @@ -1683,10 +1638,10 @@ static int send_status(struct fsg_common *common) bh->inreq->zero = 0; if (!start_in_transfer(common, bh)) /* Don't know what to do if common->fsg is NULL */ - return -EIO; + return; common->next_buffhd_to_fill = bh->next; - return 0; + return; } @@ -1848,11 +1803,10 @@ static int do_scsi_command(struct fsg_common *common) /* Wait for the next buffer to become available for data or status */ bh = common->next_buffhd_to_fill; common->next_buffhd_to_drain = bh; - while (bh->state != BUF_STATE_EMPTY) { - rc = sleep_thread(common, true); - if (rc) - return rc; - } + rc = sleep_thread(common, false, bh); + if (rc) + return rc; + common->phase_error = 0; common->short_packet_received = 0; @@ -2195,11 +2149,9 @@ static int get_next_command(struct fsg_common *common) /* Wait for the next buffer to become available */ bh = common->next_buffhd_to_fill; - while (bh->state != BUF_STATE_EMPTY) { - rc = sleep_thread(common, true); - if (rc) - return rc; - } + rc = sleep_thread(common, true, bh); + if (rc) + return rc; /* Queue a request to read a Bulk-only CBW */ set_bulk_out_req_length(common, bh, US_BULK_CB_WRAP_LEN); @@ -2214,12 +2166,10 @@ static int get_next_command(struct fsg_common *common) */ /* Wait for the CBW to arrive */ - while (bh->state != BUF_STATE_FULL) { - rc = sleep_thread(common, true); - if (rc) - return rc; - } - smp_rmb(); + rc = sleep_thread(common, true, bh); + if (rc) + return rc; + rc = fsg_is_set(common) ? received_cbw(common->fsg, bh) : -EIO; bh->state = BUF_STATE_EMPTY; @@ -2371,9 +2321,11 @@ static void handle_exception(struct fsg_common *common) if (!sig) break; if (sig != SIGUSR1) { + spin_lock_irq(&common->lock); if (common->state < FSG_STATE_EXIT) DBG(common, "Main thread exiting on signal\n"); - raise_exception(common, FSG_STATE_EXIT); + common->state = FSG_STATE_EXIT; + spin_unlock_irq(&common->lock); } } @@ -2381,23 +2333,14 @@ static void handle_exception(struct fsg_common *common) if (likely(common->fsg)) { for (i = 0; i < common->fsg_num_buffers; ++i) { bh = &common->buffhds[i]; - if (bh->inreq_busy) + if (bh->state == BUF_STATE_SENDING) usb_ep_dequeue(common->fsg->bulk_in, bh->inreq); - if (bh->outreq_busy) + if (bh->state == BUF_STATE_RECEIVING) usb_ep_dequeue(common->fsg->bulk_out, bh->outreq); - } - /* Wait until everything is idle */ - for (;;) { - int num_active = 0; - for (i = 0; i < common->fsg_num_buffers; ++i) { - bh = &common->buffhds[i]; - num_active += bh->inreq_busy + bh->outreq_busy; - } - if (num_active == 0) - break; - if (sleep_thread(common, true)) + /* Wait for a transfer to become idle */ + if (sleep_thread(common, false, bh)) return; } @@ -2422,10 +2365,9 @@ static void handle_exception(struct fsg_common *common) common->next_buffhd_to_drain = &common->buffhds[0]; exception_req_tag = common->exception_req_tag; old_state = common->state; + common->state = FSG_STATE_NORMAL; - if (old_state == FSG_STATE_ABORT_BULK_OUT) - common->state = FSG_STATE_STATUS_PHASE; - else { + if (old_state != FSG_STATE_ABORT_BULK_OUT) { for (i = 0; i < ARRAY_SIZE(common->luns); ++i) { curlun = common->luns[i]; if (!curlun) @@ -2436,21 +2378,19 @@ static void handle_exception(struct fsg_common *common) curlun->sense_data_info = 0; curlun->info_valid = 0; } - common->state = FSG_STATE_IDLE; } spin_unlock_irq(&common->lock); /* Carry out any extra actions required for the exception */ switch (old_state) { + case FSG_STATE_NORMAL: + break; + case FSG_STATE_ABORT_BULK_OUT: send_status(common); - spin_lock_irq(&common->lock); - if (common->state == FSG_STATE_STATUS_PHASE) - common->state = FSG_STATE_IDLE; - spin_unlock_irq(&common->lock); break; - case FSG_STATE_RESET: + case FSG_STATE_PROTOCOL_RESET: /* * In case we were forced against our will to halt a * bulk endpoint, clear the halt now. (The SuperH UDC @@ -2483,19 +2423,13 @@ static void handle_exception(struct fsg_common *common) break; case FSG_STATE_EXIT: - case FSG_STATE_TERMINATED: do_set_interface(common, NULL); /* Free resources */ spin_lock_irq(&common->lock); common->state = FSG_STATE_TERMINATED; /* Stop the thread */ spin_unlock_irq(&common->lock); break; - case FSG_STATE_INTERFACE_CHANGE: - case FSG_STATE_DISCONNECT: - case FSG_STATE_COMMAND_PHASE: - case FSG_STATE_DATA_PHASE: - case FSG_STATE_STATUS_PHASE: - case FSG_STATE_IDLE: + case FSG_STATE_TERMINATED: break; } } @@ -2534,33 +2468,17 @@ static int fsg_main_thread(void *common_) } if (!common->running) { - sleep_thread(common, true); + sleep_thread(common, true, NULL); continue; } - if (get_next_command(common)) + if (get_next_command(common) || exception_in_progress(common)) continue; - - spin_lock_irq(&common->lock); - if (!exception_in_progress(common)) - common->state = FSG_STATE_DATA_PHASE; - spin_unlock_irq(&common->lock); - - if (do_scsi_command(common) || finish_reply(common)) + if (do_scsi_command(common) || exception_in_progress(common)) continue; - - spin_lock_irq(&common->lock); - if (!exception_in_progress(common)) - common->state = FSG_STATE_STATUS_PHASE; - spin_unlock_irq(&common->lock); - - if (send_status(common)) + if (finish_reply(common) || exception_in_progress(common)) continue; - - spin_lock_irq(&common->lock); - if (!exception_in_progress(common)) - common->state = FSG_STATE_IDLE; - spin_unlock_irq(&common->lock); + send_status(common); } spin_lock_irq(&common->lock); @@ -2680,6 +2598,7 @@ static struct fsg_common *fsg_common_setup(struct fsg_common *common) spin_lock_init(&common->lock); kref_init(&common->ref); init_completion(&common->thread_notifier); + init_waitqueue_head(&common->io_wait); init_waitqueue_head(&common->fsg_wait); common->state = FSG_STATE_TERMINATED; memset(common->luns, 0, sizeof(common->luns)); @@ -2981,7 +2900,6 @@ static void fsg_common_release(struct kref *ref) if (common->state != FSG_STATE_TERMINATED) { raise_exception(common, FSG_STATE_EXIT); wait_for_completion(&common->thread_notifier); - common->thread_task = NULL; } for (i = 0; i < ARRAY_SIZE(common->luns); ++i) { @@ -3030,11 +2948,11 @@ static int fsg_bind(struct usb_configuration *c, struct usb_function *f) } if (!common->thread_task) { - common->state = FSG_STATE_IDLE; + common->state = FSG_STATE_NORMAL; common->thread_task = kthread_create(fsg_main_thread, common, "file-storage"); if (IS_ERR(common->thread_task)) { - int ret = PTR_ERR(common->thread_task); + ret = PTR_ERR(common->thread_task); common->thread_task = NULL; common->state = FSG_STATE_TERMINATED; return ret; diff --git a/drivers/usb/gadget/function/f_uac1.c b/drivers/usb/gadget/function/f_uac1.c index f2ac0cb..8656f84 100644 --- a/drivers/usb/gadget/function/f_uac1.c +++ b/drivers/usb/gadget/function/f_uac1.c @@ -1,24 +1,38 @@ /* - * f_audio.c -- USB Audio class function driver - * - * Copyright (C) 2008 Bryan Wu <cooloney@kernel.org> - * Copyright (C) 2008 Analog Devices, Inc + * f_uac1.c -- USB Audio Class 1.0 Function (using u_audio API) * - * Enter bugs at http://blackfin.uclinux.org/ + * Copyright (C) 2016 Ruslan Bilovol <ruslan.bilovol@gmail.com> * - * Licensed under the GPL-2 or later. + * This driver doesn't expect any real Audio codec to be present + * on the device - the audio streams are simply sinked to and + * sourced from a virtual ALSA sound card created. + * + * This file is based on f_uac1.c which is + * Copyright (C) 2008 Bryan Wu <cooloney@kernel.org> + * Copyright (C) 2008 Analog Devices, Inc + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. */ -#include <linux/slab.h> -#include <linux/kernel.h> +#include <linux/usb/audio.h> #include <linux/module.h> -#include <linux/device.h> -#include <linux/atomic.h> +#include "u_audio.h" #include "u_uac1.h" -static int generic_set_cmd(struct usb_audio_control *con, u8 cmd, int value); -static int generic_get_cmd(struct usb_audio_control *con, u8 cmd); +struct f_uac1 { + struct g_audio g_audio; + u8 ac_intf, as_in_intf, as_out_intf; + u8 ac_alt, as_in_alt, as_out_alt; /* needed for get_alt() */ +}; + +static inline struct f_uac1 *func_to_uac1(struct usb_function *f) +{ + return container_of(f, struct f_uac1, g_audio.func); +} /* * DESCRIPTORS ... most are static, but strings and full @@ -26,12 +40,17 @@ static int generic_get_cmd(struct usb_audio_control *con, u8 cmd); */ /* - * We have two interfaces- AudioControl and AudioStreaming - * TODO: only supcard playback currently + * We have three interfaces - one AudioControl and two AudioStreaming + * + * The driver implements a simple UAC_1 topology. + * USB-OUT -> IT_1 -> OT_2 -> ALSA_Capture + * ALSA_Playback -> IT_3 -> OT_4 -> USB-IN */ -#define F_AUDIO_AC_INTERFACE 0 -#define F_AUDIO_AS_INTERFACE 1 -#define F_AUDIO_NUM_INTERFACES 1 +#define F_AUDIO_AC_INTERFACE 0 +#define F_AUDIO_AS_OUT_INTERFACE 1 +#define F_AUDIO_AS_IN_INTERFACE 2 +/* Number of streaming interfaces */ +#define F_AUDIO_NUM_INTERFACES 2 /* B.3.1 Standard AC Interface Descriptor */ static struct usb_interface_descriptor ac_interface_desc = { @@ -46,89 +65,91 @@ static struct usb_interface_descriptor ac_interface_desc = { * The number of AudioStreaming and MIDIStreaming interfaces * in the Audio Interface Collection */ -DECLARE_UAC_AC_HEADER_DESCRIPTOR(1); +DECLARE_UAC_AC_HEADER_DESCRIPTOR(2); #define UAC_DT_AC_HEADER_LENGTH UAC_DT_AC_HEADER_SIZE(F_AUDIO_NUM_INTERFACES) -/* 1 input terminal, 1 output terminal and 1 feature unit */ -#define UAC_DT_TOTAL_LENGTH (UAC_DT_AC_HEADER_LENGTH + UAC_DT_INPUT_TERMINAL_SIZE \ - + UAC_DT_OUTPUT_TERMINAL_SIZE + UAC_DT_FEATURE_UNIT_SIZE(0)) +/* 2 input terminals and 2 output terminals */ +#define UAC_DT_TOTAL_LENGTH (UAC_DT_AC_HEADER_LENGTH \ + + 2*UAC_DT_INPUT_TERMINAL_SIZE + 2*UAC_DT_OUTPUT_TERMINAL_SIZE) /* B.3.2 Class-Specific AC Interface Descriptor */ -static struct uac1_ac_header_descriptor_1 ac_header_desc = { +static struct uac1_ac_header_descriptor_2 ac_header_desc = { .bLength = UAC_DT_AC_HEADER_LENGTH, .bDescriptorType = USB_DT_CS_INTERFACE, .bDescriptorSubtype = UAC_HEADER, - .bcdADC = __constant_cpu_to_le16(0x0100), - .wTotalLength = __constant_cpu_to_le16(UAC_DT_TOTAL_LENGTH), + .bcdADC = cpu_to_le16(0x0100), + .wTotalLength = cpu_to_le16(UAC_DT_TOTAL_LENGTH), .bInCollection = F_AUDIO_NUM_INTERFACES, .baInterfaceNr = { - /* Interface number of the first AudioStream interface */ + /* Interface number of the AudioStream interfaces */ [0] = 1, + [1] = 2, } }; -#define INPUT_TERMINAL_ID 1 -static struct uac_input_terminal_descriptor input_terminal_desc = { +#define USB_OUT_IT_ID 1 +static struct uac_input_terminal_descriptor usb_out_it_desc = { .bLength = UAC_DT_INPUT_TERMINAL_SIZE, .bDescriptorType = USB_DT_CS_INTERFACE, .bDescriptorSubtype = UAC_INPUT_TERMINAL, - .bTerminalID = INPUT_TERMINAL_ID, + .bTerminalID = USB_OUT_IT_ID, .wTerminalType = UAC_TERMINAL_STREAMING, .bAssocTerminal = 0, .wChannelConfig = 0x3, }; -DECLARE_UAC_FEATURE_UNIT_DESCRIPTOR(0); - -#define FEATURE_UNIT_ID 2 -static struct uac_feature_unit_descriptor_0 feature_unit_desc = { - .bLength = UAC_DT_FEATURE_UNIT_SIZE(0), +#define IO_OUT_OT_ID 2 +static struct uac1_output_terminal_descriptor io_out_ot_desc = { + .bLength = UAC_DT_OUTPUT_TERMINAL_SIZE, .bDescriptorType = USB_DT_CS_INTERFACE, - .bDescriptorSubtype = UAC_FEATURE_UNIT, - .bUnitID = FEATURE_UNIT_ID, - .bSourceID = INPUT_TERMINAL_ID, - .bControlSize = 2, - .bmaControls[0] = (UAC_FU_MUTE | UAC_FU_VOLUME), + .bDescriptorSubtype = UAC_OUTPUT_TERMINAL, + .bTerminalID = IO_OUT_OT_ID, + .wTerminalType = UAC_OUTPUT_TERMINAL_SPEAKER, + .bAssocTerminal = 0, + .bSourceID = USB_OUT_IT_ID, }; -static struct usb_audio_control mute_control = { - .list = LIST_HEAD_INIT(mute_control.list), - .name = "Mute Control", - .type = UAC_FU_MUTE, - /* Todo: add real Mute control code */ - .set = generic_set_cmd, - .get = generic_get_cmd, +#define IO_IN_IT_ID 3 +static struct uac_input_terminal_descriptor io_in_it_desc = { + .bLength = UAC_DT_INPUT_TERMINAL_SIZE, + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubtype = UAC_INPUT_TERMINAL, + .bTerminalID = IO_IN_IT_ID, + .wTerminalType = UAC_INPUT_TERMINAL_MICROPHONE, + .bAssocTerminal = 0, + .wChannelConfig = 0x3, }; -static struct usb_audio_control volume_control = { - .list = LIST_HEAD_INIT(volume_control.list), - .name = "Volume Control", - .type = UAC_FU_VOLUME, - /* Todo: add real Volume control code */ - .set = generic_set_cmd, - .get = generic_get_cmd, +#define USB_IN_OT_ID 4 +static struct uac1_output_terminal_descriptor usb_in_ot_desc = { + .bLength = UAC_DT_OUTPUT_TERMINAL_SIZE, + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubtype = UAC_OUTPUT_TERMINAL, + .bTerminalID = USB_IN_OT_ID, + .wTerminalType = UAC_TERMINAL_STREAMING, + .bAssocTerminal = 0, + .bSourceID = IO_IN_IT_ID, }; -static struct usb_audio_control_selector feature_unit = { - .list = LIST_HEAD_INIT(feature_unit.list), - .id = FEATURE_UNIT_ID, - .name = "Mute & Volume Control", - .type = UAC_FEATURE_UNIT, - .desc = (struct usb_descriptor_header *)&feature_unit_desc, +/* B.4.1 Standard AS Interface Descriptor */ +static struct usb_interface_descriptor as_out_interface_alt_0_desc = { + .bLength = USB_DT_INTERFACE_SIZE, + .bDescriptorType = USB_DT_INTERFACE, + .bAlternateSetting = 0, + .bNumEndpoints = 0, + .bInterfaceClass = USB_CLASS_AUDIO, + .bInterfaceSubClass = USB_SUBCLASS_AUDIOSTREAMING, }; -#define OUTPUT_TERMINAL_ID 3 -static struct uac1_output_terminal_descriptor output_terminal_desc = { - .bLength = UAC_DT_OUTPUT_TERMINAL_SIZE, - .bDescriptorType = USB_DT_CS_INTERFACE, - .bDescriptorSubtype = UAC_OUTPUT_TERMINAL, - .bTerminalID = OUTPUT_TERMINAL_ID, - .wTerminalType = UAC_OUTPUT_TERMINAL_SPEAKER, - .bAssocTerminal = FEATURE_UNIT_ID, - .bSourceID = FEATURE_UNIT_ID, +static struct usb_interface_descriptor as_out_interface_alt_1_desc = { + .bLength = USB_DT_INTERFACE_SIZE, + .bDescriptorType = USB_DT_INTERFACE, + .bAlternateSetting = 1, + .bNumEndpoints = 1, + .bInterfaceClass = USB_CLASS_AUDIO, + .bInterfaceSubClass = USB_SUBCLASS_AUDIOSTREAMING, }; -/* B.4.1 Standard AS Interface Descriptor */ -static struct usb_interface_descriptor as_interface_alt_0_desc = { +static struct usb_interface_descriptor as_in_interface_alt_0_desc = { .bLength = USB_DT_INTERFACE_SIZE, .bDescriptorType = USB_DT_INTERFACE, .bAlternateSetting = 0, @@ -137,7 +158,7 @@ static struct usb_interface_descriptor as_interface_alt_0_desc = { .bInterfaceSubClass = USB_SUBCLASS_AUDIOSTREAMING, }; -static struct usb_interface_descriptor as_interface_alt_1_desc = { +static struct usb_interface_descriptor as_in_interface_alt_1_desc = { .bLength = USB_DT_INTERFACE_SIZE, .bDescriptorType = USB_DT_INTERFACE, .bAlternateSetting = 1, @@ -147,18 +168,27 @@ static struct usb_interface_descriptor as_interface_alt_1_desc = { }; /* B.4.2 Class-Specific AS Interface Descriptor */ -static struct uac1_as_header_descriptor as_header_desc = { +static struct uac1_as_header_descriptor as_out_header_desc = { .bLength = UAC_DT_AS_HEADER_SIZE, .bDescriptorType = USB_DT_CS_INTERFACE, .bDescriptorSubtype = UAC_AS_GENERAL, - .bTerminalLink = INPUT_TERMINAL_ID, + .bTerminalLink = USB_OUT_IT_ID, + .bDelay = 1, + .wFormatTag = UAC_FORMAT_TYPE_I_PCM, +}; + +static struct uac1_as_header_descriptor as_in_header_desc = { + .bLength = UAC_DT_AS_HEADER_SIZE, + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubtype = UAC_AS_GENERAL, + .bTerminalLink = USB_IN_OT_ID, .bDelay = 1, .wFormatTag = UAC_FORMAT_TYPE_I_PCM, }; DECLARE_UAC_FORMAT_TYPE_I_DISCRETE_DESC(1); -static struct uac_format_type_i_discrete_descriptor_1 as_type_i_desc = { +static struct uac_format_type_i_discrete_descriptor_1 as_out_type_i_desc = { .bLength = UAC_FORMAT_TYPE_I_DISCRETE_DESC_SIZE(1), .bDescriptorType = USB_DT_CS_INTERFACE, .bDescriptorSubtype = UAC_FORMAT_TYPE, @@ -184,48 +214,97 @@ static struct uac_iso_endpoint_descriptor as_iso_out_desc = { .bLength = UAC_ISO_ENDPOINT_DESC_SIZE, .bDescriptorType = USB_DT_CS_ENDPOINT, .bDescriptorSubtype = UAC_EP_GENERAL, - .bmAttributes = 1, + .bmAttributes = 1, .bLockDelayUnits = 1, - .wLockDelay = __constant_cpu_to_le16(1), + .wLockDelay = cpu_to_le16(1), +}; + +static struct uac_format_type_i_discrete_descriptor_1 as_in_type_i_desc = { + .bLength = UAC_FORMAT_TYPE_I_DISCRETE_DESC_SIZE(1), + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubtype = UAC_FORMAT_TYPE, + .bFormatType = UAC_FORMAT_TYPE_I, + .bSubframeSize = 2, + .bBitResolution = 16, + .bSamFreqType = 1, +}; + +/* Standard ISO OUT Endpoint Descriptor */ +static struct usb_endpoint_descriptor as_in_ep_desc = { + .bLength = USB_DT_ENDPOINT_AUDIO_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_SYNC_ASYNC + | USB_ENDPOINT_XFER_ISOC, + .wMaxPacketSize = cpu_to_le16(UAC1_OUT_EP_MAX_PACKET_SIZE), + .bInterval = 4, +}; + +/* Class-specific AS ISO OUT Endpoint Descriptor */ +static struct uac_iso_endpoint_descriptor as_iso_in_desc = { + .bLength = UAC_ISO_ENDPOINT_DESC_SIZE, + .bDescriptorType = USB_DT_CS_ENDPOINT, + .bDescriptorSubtype = UAC_EP_GENERAL, + .bmAttributes = 1, + .bLockDelayUnits = 0, + .wLockDelay = 0, }; static struct usb_descriptor_header *f_audio_desc[] = { (struct usb_descriptor_header *)&ac_interface_desc, (struct usb_descriptor_header *)&ac_header_desc, - (struct usb_descriptor_header *)&input_terminal_desc, - (struct usb_descriptor_header *)&output_terminal_desc, - (struct usb_descriptor_header *)&feature_unit_desc, + (struct usb_descriptor_header *)&usb_out_it_desc, + (struct usb_descriptor_header *)&io_out_ot_desc, + (struct usb_descriptor_header *)&io_in_it_desc, + (struct usb_descriptor_header *)&usb_in_ot_desc, - (struct usb_descriptor_header *)&as_interface_alt_0_desc, - (struct usb_descriptor_header *)&as_interface_alt_1_desc, - (struct usb_descriptor_header *)&as_header_desc, + (struct usb_descriptor_header *)&as_out_interface_alt_0_desc, + (struct usb_descriptor_header *)&as_out_interface_alt_1_desc, + (struct usb_descriptor_header *)&as_out_header_desc, - (struct usb_descriptor_header *)&as_type_i_desc, + (struct usb_descriptor_header *)&as_out_type_i_desc, (struct usb_descriptor_header *)&as_out_ep_desc, (struct usb_descriptor_header *)&as_iso_out_desc, + + (struct usb_descriptor_header *)&as_in_interface_alt_0_desc, + (struct usb_descriptor_header *)&as_in_interface_alt_1_desc, + (struct usb_descriptor_header *)&as_in_header_desc, + + (struct usb_descriptor_header *)&as_in_type_i_desc, + + (struct usb_descriptor_header *)&as_in_ep_desc, + (struct usb_descriptor_header *)&as_iso_in_desc, NULL, }; enum { STR_AC_IF, - STR_INPUT_TERMINAL, - STR_INPUT_TERMINAL_CH_NAMES, - STR_FEAT_DESC_0, - STR_OUTPUT_TERMINAL, - STR_AS_IF_ALT0, - STR_AS_IF_ALT1, + STR_USB_OUT_IT, + STR_USB_OUT_IT_CH_NAMES, + STR_IO_OUT_OT, + STR_IO_IN_IT, + STR_IO_IN_IT_CH_NAMES, + STR_USB_IN_OT, + STR_AS_OUT_IF_ALT0, + STR_AS_OUT_IF_ALT1, + STR_AS_IN_IF_ALT0, + STR_AS_IN_IF_ALT1, }; static struct usb_string strings_uac1[] = { [STR_AC_IF].s = "AC Interface", - [STR_INPUT_TERMINAL].s = "Input terminal", - [STR_INPUT_TERMINAL_CH_NAMES].s = "Channels", - [STR_FEAT_DESC_0].s = "Volume control & mute", - [STR_OUTPUT_TERMINAL].s = "Output terminal", - [STR_AS_IF_ALT0].s = "AS Interface", - [STR_AS_IF_ALT1].s = "AS Interface", + [STR_USB_OUT_IT].s = "Playback Input terminal", + [STR_USB_OUT_IT_CH_NAMES].s = "Playback Channels", + [STR_IO_OUT_OT].s = "Playback Output terminal", + [STR_IO_IN_IT].s = "Capture Input terminal", + [STR_IO_IN_IT_CH_NAMES].s = "Capture Channels", + [STR_USB_IN_OT].s = "Capture Output terminal", + [STR_AS_OUT_IF_ALT0].s = "Playback Inactive", + [STR_AS_OUT_IF_ALT1].s = "Playback Active", + [STR_AS_IN_IF_ALT0].s = "Capture Inactive", + [STR_AS_IN_IF_ALT1].s = "Capture Active", { }, }; @@ -243,216 +322,6 @@ static struct usb_gadget_strings *uac1_strings[] = { * This function is an ALSA sound card following USB Audio Class Spec 1.0. */ -/*-------------------------------------------------------------------------*/ -struct f_audio_buf { - u8 *buf; - int actual; - struct list_head list; -}; - -static struct f_audio_buf *f_audio_buffer_alloc(int buf_size) -{ - struct f_audio_buf *copy_buf; - - copy_buf = kzalloc(sizeof *copy_buf, GFP_ATOMIC); - if (!copy_buf) - return ERR_PTR(-ENOMEM); - - copy_buf->buf = kzalloc(buf_size, GFP_ATOMIC); - if (!copy_buf->buf) { - kfree(copy_buf); - return ERR_PTR(-ENOMEM); - } - - return copy_buf; -} - -static void f_audio_buffer_free(struct f_audio_buf *audio_buf) -{ - kfree(audio_buf->buf); - kfree(audio_buf); -} -/*-------------------------------------------------------------------------*/ - -struct f_audio { - struct gaudio card; - - /* endpoints handle full and/or high speeds */ - struct usb_ep *out_ep; - - spinlock_t lock; - struct f_audio_buf *copy_buf; - struct work_struct playback_work; - struct list_head play_queue; - - /* Control Set command */ - struct list_head cs; - u8 set_cmd; - struct usb_audio_control *set_con; -}; - -static inline struct f_audio *func_to_audio(struct usb_function *f) -{ - return container_of(f, struct f_audio, card.func); -} - -/*-------------------------------------------------------------------------*/ - -static void f_audio_playback_work(struct work_struct *data) -{ - struct f_audio *audio = container_of(data, struct f_audio, - playback_work); - struct f_audio_buf *play_buf; - - spin_lock_irq(&audio->lock); - if (list_empty(&audio->play_queue)) { - spin_unlock_irq(&audio->lock); - return; - } - play_buf = list_first_entry(&audio->play_queue, - struct f_audio_buf, list); - list_del(&play_buf->list); - spin_unlock_irq(&audio->lock); - - u_audio_playback(&audio->card, play_buf->buf, play_buf->actual); - f_audio_buffer_free(play_buf); -} - -static int f_audio_out_ep_complete(struct usb_ep *ep, struct usb_request *req) -{ - struct f_audio *audio = req->context; - struct usb_composite_dev *cdev = audio->card.func.config->cdev; - struct f_audio_buf *copy_buf = audio->copy_buf; - struct f_uac1_opts *opts; - int audio_buf_size; - int err; - - opts = container_of(audio->card.func.fi, struct f_uac1_opts, - func_inst); - audio_buf_size = opts->audio_buf_size; - - if (!copy_buf) - return -EINVAL; - - /* Copy buffer is full, add it to the play_queue */ - if (audio_buf_size - copy_buf->actual < req->actual) { - list_add_tail(©_buf->list, &audio->play_queue); - schedule_work(&audio->playback_work); - copy_buf = f_audio_buffer_alloc(audio_buf_size); - if (IS_ERR(copy_buf)) - return -ENOMEM; - } - - memcpy(copy_buf->buf + copy_buf->actual, req->buf, req->actual); - copy_buf->actual += req->actual; - audio->copy_buf = copy_buf; - - err = usb_ep_queue(ep, req, GFP_ATOMIC); - if (err) - ERROR(cdev, "%s queue req: %d\n", ep->name, err); - - return 0; - -} - -static void f_audio_complete(struct usb_ep *ep, struct usb_request *req) -{ - struct f_audio *audio = req->context; - int status = req->status; - u32 data = 0; - struct usb_ep *out_ep = audio->out_ep; - - switch (status) { - - case 0: /* normal completion? */ - if (ep == out_ep) - f_audio_out_ep_complete(ep, req); - else if (audio->set_con) { - memcpy(&data, req->buf, req->length); - audio->set_con->set(audio->set_con, audio->set_cmd, - le16_to_cpu(data)); - audio->set_con = NULL; - } - break; - default: - break; - } -} - -static int audio_set_intf_req(struct usb_function *f, - const struct usb_ctrlrequest *ctrl) -{ - struct f_audio *audio = func_to_audio(f); - struct usb_composite_dev *cdev = f->config->cdev; - struct usb_request *req = cdev->req; - u8 id = ((le16_to_cpu(ctrl->wIndex) >> 8) & 0xFF); - u16 len = le16_to_cpu(ctrl->wLength); - u16 w_value = le16_to_cpu(ctrl->wValue); - u8 con_sel = (w_value >> 8) & 0xFF; - u8 cmd = (ctrl->bRequest & 0x0F); - struct usb_audio_control_selector *cs; - struct usb_audio_control *con; - - DBG(cdev, "bRequest 0x%x, w_value 0x%04x, len %d, entity %d\n", - ctrl->bRequest, w_value, len, id); - - list_for_each_entry(cs, &audio->cs, list) { - if (cs->id == id) { - list_for_each_entry(con, &cs->control, list) { - if (con->type == con_sel) { - audio->set_con = con; - break; - } - } - break; - } - } - - audio->set_cmd = cmd; - req->context = audio; - req->complete = f_audio_complete; - - return len; -} - -static int audio_get_intf_req(struct usb_function *f, - const struct usb_ctrlrequest *ctrl) -{ - struct f_audio *audio = func_to_audio(f); - struct usb_composite_dev *cdev = f->config->cdev; - struct usb_request *req = cdev->req; - int value = -EOPNOTSUPP; - u8 id = ((le16_to_cpu(ctrl->wIndex) >> 8) & 0xFF); - u16 len = le16_to_cpu(ctrl->wLength); - u16 w_value = le16_to_cpu(ctrl->wValue); - u8 con_sel = (w_value >> 8) & 0xFF; - u8 cmd = (ctrl->bRequest & 0x0F); - struct usb_audio_control_selector *cs; - struct usb_audio_control *con; - - DBG(cdev, "bRequest 0x%x, w_value 0x%04x, len %d, entity %d\n", - ctrl->bRequest, w_value, len, id); - - list_for_each_entry(cs, &audio->cs, list) { - if (cs->id == id) { - list_for_each_entry(con, &cs->control, list) { - if (con->type == con_sel && con->get) { - value = con->get(con, cmd); - break; - } - } - break; - } - } - - req->context = audio; - req->complete = f_audio_complete; - len = min_t(size_t, sizeof(value), len); - memcpy(req->buf, &value, len); - - return len; -} - static int audio_set_endpoint_req(struct usb_function *f, const struct usb_ctrlrequest *ctrl) { @@ -531,14 +400,6 @@ f_audio_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl) * activation uses set_alt(). */ switch (ctrl->bRequestType) { - case USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE: - value = audio_set_intf_req(f, ctrl); - break; - - case USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE: - value = audio_get_intf_req(f, ctrl); - break; - case USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_ENDPOINT: value = audio_set_endpoint_req(f, ctrl); break; @@ -571,143 +432,158 @@ f_audio_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl) static int f_audio_set_alt(struct usb_function *f, unsigned intf, unsigned alt) { - struct f_audio *audio = func_to_audio(f); struct usb_composite_dev *cdev = f->config->cdev; - struct usb_ep *out_ep = audio->out_ep; - struct usb_request *req; - struct f_uac1_opts *opts; - int req_buf_size, req_count, audio_buf_size; - int i = 0, err = 0; - - DBG(cdev, "intf %d, alt %d\n", intf, alt); + struct usb_gadget *gadget = cdev->gadget; + struct device *dev = &gadget->dev; + struct f_uac1 *uac1 = func_to_uac1(f); + int ret = 0; + + /* No i/f has more than 2 alt settings */ + if (alt > 1) { + dev_err(dev, "%s:%d Error!\n", __func__, __LINE__); + return -EINVAL; + } - opts = container_of(f->fi, struct f_uac1_opts, func_inst); - req_buf_size = opts->req_buf_size; - req_count = opts->req_count; - audio_buf_size = opts->audio_buf_size; - - if (intf == 1) { - if (alt == 1) { - err = config_ep_by_speed(cdev->gadget, f, out_ep); - if (err) - return err; - - usb_ep_enable(out_ep); - audio->copy_buf = f_audio_buffer_alloc(audio_buf_size); - if (IS_ERR(audio->copy_buf)) - return -ENOMEM; - - /* - * allocate a bunch of read buffers - * and queue them all at once. - */ - for (i = 0; i < req_count && err == 0; i++) { - req = usb_ep_alloc_request(out_ep, GFP_ATOMIC); - if (req) { - req->buf = kzalloc(req_buf_size, - GFP_ATOMIC); - if (req->buf) { - req->length = req_buf_size; - req->context = audio; - req->complete = - f_audio_complete; - err = usb_ep_queue(out_ep, - req, GFP_ATOMIC); - if (err) - ERROR(cdev, - "%s queue req: %d\n", - out_ep->name, err); - } else - err = -ENOMEM; - } else - err = -ENOMEM; - } - - } else { - struct f_audio_buf *copy_buf = audio->copy_buf; - if (copy_buf) { - list_add_tail(©_buf->list, - &audio->play_queue); - schedule_work(&audio->playback_work); - } + if (intf == uac1->ac_intf) { + /* Control I/f has only 1 AltSetting - 0 */ + if (alt) { + dev_err(dev, "%s:%d Error!\n", __func__, __LINE__); + return -EINVAL; } + return 0; } - return err; + if (intf == uac1->as_out_intf) { + uac1->as_out_alt = alt; + + if (alt) + ret = u_audio_start_capture(&uac1->g_audio); + else + u_audio_stop_capture(&uac1->g_audio); + } else if (intf == uac1->as_in_intf) { + uac1->as_in_alt = alt; + + if (alt) + ret = u_audio_start_playback(&uac1->g_audio); + else + u_audio_stop_playback(&uac1->g_audio); + } else { + dev_err(dev, "%s:%d Error!\n", __func__, __LINE__); + return -EINVAL; + } + + return ret; } -static void f_audio_disable(struct usb_function *f) +static int f_audio_get_alt(struct usb_function *f, unsigned intf) { - return; + struct usb_composite_dev *cdev = f->config->cdev; + struct usb_gadget *gadget = cdev->gadget; + struct device *dev = &gadget->dev; + struct f_uac1 *uac1 = func_to_uac1(f); + + if (intf == uac1->ac_intf) + return uac1->ac_alt; + else if (intf == uac1->as_out_intf) + return uac1->as_out_alt; + else if (intf == uac1->as_in_intf) + return uac1->as_in_alt; + else + dev_err(dev, "%s:%d Invalid Interface %d!\n", + __func__, __LINE__, intf); + + return -EINVAL; } -/*-------------------------------------------------------------------------*/ -static void f_audio_build_desc(struct f_audio *audio) +static void f_audio_disable(struct usb_function *f) { - struct gaudio *card = &audio->card; - u8 *sam_freq; - int rate; + struct f_uac1 *uac1 = func_to_uac1(f); - /* Set channel numbers */ - input_terminal_desc.bNrChannels = u_audio_get_playback_channels(card); - as_type_i_desc.bNrChannels = u_audio_get_playback_channels(card); + uac1->as_out_alt = 0; + uac1->as_in_alt = 0; - /* Set sample rates */ - rate = u_audio_get_playback_rate(card); - sam_freq = as_type_i_desc.tSamFreq[0]; - memcpy(sam_freq, &rate, 3); - - /* Todo: Set Sample bits and other parameters */ - - return; + u_audio_stop_capture(&uac1->g_audio); } +/*-------------------------------------------------------------------------*/ + /* audio function driver setup/binding */ -static int -f_audio_bind(struct usb_configuration *c, struct usb_function *f) +static int f_audio_bind(struct usb_configuration *c, struct usb_function *f) { - struct usb_composite_dev *cdev = c->cdev; - struct f_audio *audio = func_to_audio(f); - struct usb_string *us; - int status; - struct usb_ep *ep = NULL; - struct f_uac1_opts *audio_opts; + struct usb_composite_dev *cdev = c->cdev; + struct usb_gadget *gadget = cdev->gadget; + struct f_uac1 *uac1 = func_to_uac1(f); + struct g_audio *audio = func_to_g_audio(f); + struct f_uac1_opts *audio_opts; + struct usb_ep *ep = NULL; + struct usb_string *us; + u8 *sam_freq; + int rate; + int status; audio_opts = container_of(f->fi, struct f_uac1_opts, func_inst); - audio->card.gadget = c->cdev->gadget; - /* set up ASLA audio devices */ - if (!audio_opts->bound) { - status = gaudio_setup(&audio->card); - if (status < 0) - return status; - audio_opts->bound = true; - } + us = usb_gstrings_attach(cdev, uac1_strings, ARRAY_SIZE(strings_uac1)); if (IS_ERR(us)) return PTR_ERR(us); ac_interface_desc.iInterface = us[STR_AC_IF].id; - input_terminal_desc.iTerminal = us[STR_INPUT_TERMINAL].id; - input_terminal_desc.iChannelNames = us[STR_INPUT_TERMINAL_CH_NAMES].id; - feature_unit_desc.iFeature = us[STR_FEAT_DESC_0].id; - output_terminal_desc.iTerminal = us[STR_OUTPUT_TERMINAL].id; - as_interface_alt_0_desc.iInterface = us[STR_AS_IF_ALT0].id; - as_interface_alt_1_desc.iInterface = us[STR_AS_IF_ALT1].id; + usb_out_it_desc.iTerminal = us[STR_USB_OUT_IT].id; + usb_out_it_desc.iChannelNames = us[STR_USB_OUT_IT_CH_NAMES].id; + io_out_ot_desc.iTerminal = us[STR_IO_OUT_OT].id; + as_out_interface_alt_0_desc.iInterface = us[STR_AS_OUT_IF_ALT0].id; + as_out_interface_alt_1_desc.iInterface = us[STR_AS_OUT_IF_ALT1].id; + io_in_it_desc.iTerminal = us[STR_IO_IN_IT].id; + io_in_it_desc.iChannelNames = us[STR_IO_IN_IT_CH_NAMES].id; + usb_in_ot_desc.iTerminal = us[STR_USB_IN_OT].id; + as_in_interface_alt_0_desc.iInterface = us[STR_AS_IN_IF_ALT0].id; + as_in_interface_alt_1_desc.iInterface = us[STR_AS_IN_IF_ALT1].id; + /* Set channel numbers */ + usb_out_it_desc.bNrChannels = num_channels(audio_opts->c_chmask); + usb_out_it_desc.wChannelConfig = cpu_to_le16(audio_opts->c_chmask); + as_out_type_i_desc.bNrChannels = num_channels(audio_opts->c_chmask); + as_out_type_i_desc.bSubframeSize = audio_opts->c_ssize; + as_out_type_i_desc.bBitResolution = audio_opts->c_ssize * 8; + io_in_it_desc.bNrChannels = num_channels(audio_opts->p_chmask); + io_in_it_desc.wChannelConfig = cpu_to_le16(audio_opts->p_chmask); + as_in_type_i_desc.bNrChannels = num_channels(audio_opts->p_chmask); + as_in_type_i_desc.bSubframeSize = audio_opts->p_ssize; + as_in_type_i_desc.bBitResolution = audio_opts->p_ssize * 8; - f_audio_build_desc(audio); + /* Set sample rates */ + rate = audio_opts->c_srate; + sam_freq = as_out_type_i_desc.tSamFreq[0]; + memcpy(sam_freq, &rate, 3); + rate = audio_opts->p_srate; + sam_freq = as_in_type_i_desc.tSamFreq[0]; + memcpy(sam_freq, &rate, 3); /* allocate instance-specific interface IDs, and patch descriptors */ status = usb_interface_id(c, f); if (status < 0) goto fail; ac_interface_desc.bInterfaceNumber = status; + uac1->ac_intf = status; + uac1->ac_alt = 0; status = usb_interface_id(c, f); if (status < 0) goto fail; - as_interface_alt_0_desc.bInterfaceNumber = status; - as_interface_alt_1_desc.bInterfaceNumber = status; + as_out_interface_alt_0_desc.bInterfaceNumber = status; + as_out_interface_alt_1_desc.bInterfaceNumber = status; + uac1->as_out_intf = status; + uac1->as_out_alt = 0; + + status = usb_interface_id(c, f); + if (status < 0) + goto fail; + as_in_interface_alt_0_desc.bInterfaceNumber = status; + as_in_interface_alt_1_desc.bInterfaceNumber = status; + uac1->as_in_intf = status; + uac1->as_in_alt = 0; + + audio->gadget = gadget; status = -ENODEV; @@ -718,52 +594,42 @@ f_audio_bind(struct usb_configuration *c, struct usb_function *f) audio->out_ep = ep; audio->out_ep->desc = &as_out_ep_desc; - status = -ENOMEM; + ep = usb_ep_autoconfig(cdev->gadget, &as_in_ep_desc); + if (!ep) + goto fail; + audio->in_ep = ep; + audio->in_ep->desc = &as_in_ep_desc; /* copy descriptors, and track endpoint copies */ status = usb_assign_descriptors(f, f_audio_desc, f_audio_desc, NULL, NULL); if (status) goto fail; + + audio->out_ep_maxpsize = as_out_ep_desc.wMaxPacketSize; + audio->in_ep_maxpsize = as_in_ep_desc.wMaxPacketSize; + audio->params.c_chmask = audio_opts->c_chmask; + audio->params.c_srate = audio_opts->c_srate; + audio->params.c_ssize = audio_opts->c_ssize; + audio->params.p_chmask = audio_opts->p_chmask; + audio->params.p_srate = audio_opts->p_srate; + audio->params.p_ssize = audio_opts->p_ssize; + audio->params.req_number = audio_opts->req_number; + + status = g_audio_setup(audio, "UAC1_PCM", "UAC1_Gadget"); + if (status) + goto err_card_register; + return 0; +err_card_register: + usb_free_all_descriptors(f); fail: - gaudio_cleanup(&audio->card); return status; } /*-------------------------------------------------------------------------*/ -static int generic_set_cmd(struct usb_audio_control *con, u8 cmd, int value) -{ - con->data[cmd] = value; - - return 0; -} - -static int generic_get_cmd(struct usb_audio_control *con, u8 cmd) -{ - return con->data[cmd]; -} - -/* Todo: add more control selecotor dynamically */ -static int control_selector_init(struct f_audio *audio) -{ - INIT_LIST_HEAD(&audio->cs); - list_add(&feature_unit.list, &audio->cs); - - INIT_LIST_HEAD(&feature_unit.control); - list_add(&mute_control.list, &feature_unit.control); - list_add(&volume_control.list, &feature_unit.control); - - volume_control.data[UAC__CUR] = 0xffc0; - volume_control.data[UAC__MIN] = 0xe3a0; - volume_control.data[UAC__MAX] = 0xfff0; - volume_control.data[UAC__RES] = 0x0030; - - return 0; -} - static inline struct f_uac1_opts *to_f_uac1_opts(struct config_item *item) { return container_of(to_config_group(item), struct f_uac1_opts, @@ -781,9 +647,10 @@ static struct configfs_item_operations f_uac1_item_ops = { .release = f_uac1_attr_release, }; -#define UAC1_INT_ATTRIBUTE(name) \ -static ssize_t f_uac1_opts_##name##_show(struct config_item *item, \ - char *page) \ +#define UAC1_ATTRIBUTE(name) \ +static ssize_t f_uac1_opts_##name##_show( \ + struct config_item *item, \ + char *page) \ { \ struct f_uac1_opts *opts = to_f_uac1_opts(item); \ int result; \ @@ -795,7 +662,8 @@ static ssize_t f_uac1_opts_##name##_show(struct config_item *item, \ return result; \ } \ \ -static ssize_t f_uac1_opts_##name##_store(struct config_item *item, \ +static ssize_t f_uac1_opts_##name##_store( \ + struct config_item *item, \ const char *page, size_t len) \ { \ struct f_uac1_opts *opts = to_f_uac1_opts(item); \ @@ -822,64 +690,22 @@ end: \ \ CONFIGFS_ATTR(f_uac1_opts_, name) -UAC1_INT_ATTRIBUTE(req_buf_size); -UAC1_INT_ATTRIBUTE(req_count); -UAC1_INT_ATTRIBUTE(audio_buf_size); - -#define UAC1_STR_ATTRIBUTE(name) \ -static ssize_t f_uac1_opts_##name##_show(struct config_item *item, \ - char *page) \ -{ \ - struct f_uac1_opts *opts = to_f_uac1_opts(item); \ - int result; \ - \ - mutex_lock(&opts->lock); \ - result = sprintf(page, "%s\n", opts->name); \ - mutex_unlock(&opts->lock); \ - \ - return result; \ -} \ - \ -static ssize_t f_uac1_opts_##name##_store(struct config_item *item, \ - const char *page, size_t len) \ -{ \ - struct f_uac1_opts *opts = to_f_uac1_opts(item); \ - int ret = -EBUSY; \ - char *tmp; \ - \ - mutex_lock(&opts->lock); \ - if (opts->refcnt) \ - goto end; \ - \ - tmp = kstrndup(page, len, GFP_KERNEL); \ - if (tmp) { \ - ret = -ENOMEM; \ - goto end; \ - } \ - if (opts->name##_alloc) \ - kfree(opts->name); \ - opts->name##_alloc = true; \ - opts->name = tmp; \ - ret = len; \ - \ -end: \ - mutex_unlock(&opts->lock); \ - return ret; \ -} \ - \ -CONFIGFS_ATTR(f_uac1_opts_, name) - -UAC1_STR_ATTRIBUTE(fn_play); -UAC1_STR_ATTRIBUTE(fn_cap); -UAC1_STR_ATTRIBUTE(fn_cntl); +UAC1_ATTRIBUTE(c_chmask); +UAC1_ATTRIBUTE(c_srate); +UAC1_ATTRIBUTE(c_ssize); +UAC1_ATTRIBUTE(p_chmask); +UAC1_ATTRIBUTE(p_srate); +UAC1_ATTRIBUTE(p_ssize); +UAC1_ATTRIBUTE(req_number); static struct configfs_attribute *f_uac1_attrs[] = { - &f_uac1_opts_attr_req_buf_size, - &f_uac1_opts_attr_req_count, - &f_uac1_opts_attr_audio_buf_size, - &f_uac1_opts_attr_fn_play, - &f_uac1_opts_attr_fn_cap, - &f_uac1_opts_attr_fn_cntl, + &f_uac1_opts_attr_c_chmask, + &f_uac1_opts_attr_c_srate, + &f_uac1_opts_attr_c_ssize, + &f_uac1_opts_attr_p_chmask, + &f_uac1_opts_attr_p_srate, + &f_uac1_opts_attr_p_ssize, + &f_uac1_opts_attr_req_number, NULL, }; @@ -894,12 +720,6 @@ static void f_audio_free_inst(struct usb_function_instance *f) struct f_uac1_opts *opts; opts = container_of(f, struct f_uac1_opts, func_inst); - if (opts->fn_play_alloc) - kfree(opts->fn_play); - if (opts->fn_cap_alloc) - kfree(opts->fn_cap); - if (opts->fn_cntl_alloc) - kfree(opts->fn_cntl); kfree(opts); } @@ -917,21 +737,22 @@ static struct usb_function_instance *f_audio_alloc_inst(void) config_group_init_type_name(&opts->func_inst.group, "", &f_uac1_func_type); - opts->req_buf_size = UAC1_OUT_EP_MAX_PACKET_SIZE; - opts->req_count = UAC1_REQ_COUNT; - opts->audio_buf_size = UAC1_AUDIO_BUF_SIZE; - opts->fn_play = FILE_PCM_PLAYBACK; - opts->fn_cap = FILE_PCM_CAPTURE; - opts->fn_cntl = FILE_CONTROL; + opts->c_chmask = UAC1_DEF_CCHMASK; + opts->c_srate = UAC1_DEF_CSRATE; + opts->c_ssize = UAC1_DEF_CSSIZE; + opts->p_chmask = UAC1_DEF_PCHMASK; + opts->p_srate = UAC1_DEF_PSRATE; + opts->p_ssize = UAC1_DEF_PSSIZE; + opts->req_number = UAC1_DEF_REQ_NUM; return &opts->func_inst; } static void f_audio_free(struct usb_function *f) { - struct f_audio *audio = func_to_audio(f); + struct g_audio *audio; struct f_uac1_opts *opts; - gaudio_cleanup(&audio->card); + audio = func_to_g_audio(f); opts = container_of(f->fi, struct f_uac1_opts, func_inst); kfree(audio); mutex_lock(&opts->lock); @@ -941,42 +762,41 @@ static void f_audio_free(struct usb_function *f) static void f_audio_unbind(struct usb_configuration *c, struct usb_function *f) { + struct g_audio *audio = func_to_g_audio(f); + + g_audio_cleanup(audio); usb_free_all_descriptors(f); + + audio->gadget = NULL; } static struct usb_function *f_audio_alloc(struct usb_function_instance *fi) { - struct f_audio *audio; + struct f_uac1 *uac1; struct f_uac1_opts *opts; /* allocate and initialize one new instance */ - audio = kzalloc(sizeof(*audio), GFP_KERNEL); - if (!audio) + uac1 = kzalloc(sizeof(*uac1), GFP_KERNEL); + if (!uac1) return ERR_PTR(-ENOMEM); - audio->card.func.name = "g_audio"; - opts = container_of(fi, struct f_uac1_opts, func_inst); mutex_lock(&opts->lock); ++opts->refcnt; mutex_unlock(&opts->lock); - INIT_LIST_HEAD(&audio->play_queue); - spin_lock_init(&audio->lock); - - audio->card.func.bind = f_audio_bind; - audio->card.func.unbind = f_audio_unbind; - audio->card.func.set_alt = f_audio_set_alt; - audio->card.func.setup = f_audio_setup; - audio->card.func.disable = f_audio_disable; - audio->card.func.free_func = f_audio_free; - - control_selector_init(audio); - INIT_WORK(&audio->playback_work, f_audio_playback_work); + uac1->g_audio.func.name = "uac1_func"; + uac1->g_audio.func.bind = f_audio_bind; + uac1->g_audio.func.unbind = f_audio_unbind; + uac1->g_audio.func.set_alt = f_audio_set_alt; + uac1->g_audio.func.get_alt = f_audio_get_alt; + uac1->g_audio.func.setup = f_audio_setup; + uac1->g_audio.func.disable = f_audio_disable; + uac1->g_audio.func.free_func = f_audio_free; - return &audio->card.func; + return &uac1->g_audio.func; } DECLARE_USB_FUNCTION_INIT(uac1, f_audio_alloc_inst, f_audio_alloc); MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Bryan Wu"); +MODULE_AUTHOR("Ruslan Bilovol"); diff --git a/drivers/usb/gadget/function/f_uac1_legacy.c b/drivers/usb/gadget/function/f_uac1_legacy.c new file mode 100644 index 0000000..5d229e7 --- /dev/null +++ b/drivers/usb/gadget/function/f_uac1_legacy.c @@ -0,0 +1,1021 @@ +/* + * f_audio.c -- USB Audio class function driver + * + * Copyright (C) 2008 Bryan Wu <cooloney@kernel.org> + * Copyright (C) 2008 Analog Devices, Inc + * + * Enter bugs at http://blackfin.uclinux.org/ + * + * Licensed under the GPL-2 or later. + */ + +#include <linux/slab.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/device.h> +#include <linux/atomic.h> + +#include "u_uac1_legacy.h" + +static int generic_set_cmd(struct usb_audio_control *con, u8 cmd, int value); +static int generic_get_cmd(struct usb_audio_control *con, u8 cmd); + +/* + * DESCRIPTORS ... most are static, but strings and full + * configuration descriptors are built on demand. + */ + +/* + * We have two interfaces- AudioControl and AudioStreaming + * TODO: only supcard playback currently + */ +#define F_AUDIO_AC_INTERFACE 0 +#define F_AUDIO_AS_INTERFACE 1 +#define F_AUDIO_NUM_INTERFACES 1 + +/* B.3.1 Standard AC Interface Descriptor */ +static struct usb_interface_descriptor ac_interface_desc = { + .bLength = USB_DT_INTERFACE_SIZE, + .bDescriptorType = USB_DT_INTERFACE, + .bNumEndpoints = 0, + .bInterfaceClass = USB_CLASS_AUDIO, + .bInterfaceSubClass = USB_SUBCLASS_AUDIOCONTROL, +}; + +/* + * The number of AudioStreaming and MIDIStreaming interfaces + * in the Audio Interface Collection + */ +DECLARE_UAC_AC_HEADER_DESCRIPTOR(1); + +#define UAC_DT_AC_HEADER_LENGTH UAC_DT_AC_HEADER_SIZE(F_AUDIO_NUM_INTERFACES) +/* 1 input terminal, 1 output terminal and 1 feature unit */ +#define UAC_DT_TOTAL_LENGTH (UAC_DT_AC_HEADER_LENGTH + UAC_DT_INPUT_TERMINAL_SIZE \ + + UAC_DT_OUTPUT_TERMINAL_SIZE + UAC_DT_FEATURE_UNIT_SIZE(0)) +/* B.3.2 Class-Specific AC Interface Descriptor */ +static struct uac1_ac_header_descriptor_1 ac_header_desc = { + .bLength = UAC_DT_AC_HEADER_LENGTH, + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubtype = UAC_HEADER, + .bcdADC = __constant_cpu_to_le16(0x0100), + .wTotalLength = __constant_cpu_to_le16(UAC_DT_TOTAL_LENGTH), + .bInCollection = F_AUDIO_NUM_INTERFACES, + .baInterfaceNr = { + /* Interface number of the first AudioStream interface */ + [0] = 1, + } +}; + +#define INPUT_TERMINAL_ID 1 +static struct uac_input_terminal_descriptor input_terminal_desc = { + .bLength = UAC_DT_INPUT_TERMINAL_SIZE, + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubtype = UAC_INPUT_TERMINAL, + .bTerminalID = INPUT_TERMINAL_ID, + .wTerminalType = UAC_TERMINAL_STREAMING, + .bAssocTerminal = 0, + .wChannelConfig = 0x3, +}; + +DECLARE_UAC_FEATURE_UNIT_DESCRIPTOR(0); + +#define FEATURE_UNIT_ID 2 +static struct uac_feature_unit_descriptor_0 feature_unit_desc = { + .bLength = UAC_DT_FEATURE_UNIT_SIZE(0), + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubtype = UAC_FEATURE_UNIT, + .bUnitID = FEATURE_UNIT_ID, + .bSourceID = INPUT_TERMINAL_ID, + .bControlSize = 2, + .bmaControls[0] = (UAC_FU_MUTE | UAC_FU_VOLUME), +}; + +static struct usb_audio_control mute_control = { + .list = LIST_HEAD_INIT(mute_control.list), + .name = "Mute Control", + .type = UAC_FU_MUTE, + /* Todo: add real Mute control code */ + .set = generic_set_cmd, + .get = generic_get_cmd, +}; + +static struct usb_audio_control volume_control = { + .list = LIST_HEAD_INIT(volume_control.list), + .name = "Volume Control", + .type = UAC_FU_VOLUME, + /* Todo: add real Volume control code */ + .set = generic_set_cmd, + .get = generic_get_cmd, +}; + +static struct usb_audio_control_selector feature_unit = { + .list = LIST_HEAD_INIT(feature_unit.list), + .id = FEATURE_UNIT_ID, + .name = "Mute & Volume Control", + .type = UAC_FEATURE_UNIT, + .desc = (struct usb_descriptor_header *)&feature_unit_desc, +}; + +#define OUTPUT_TERMINAL_ID 3 +static struct uac1_output_terminal_descriptor output_terminal_desc = { + .bLength = UAC_DT_OUTPUT_TERMINAL_SIZE, + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubtype = UAC_OUTPUT_TERMINAL, + .bTerminalID = OUTPUT_TERMINAL_ID, + .wTerminalType = UAC_OUTPUT_TERMINAL_SPEAKER, + .bAssocTerminal = FEATURE_UNIT_ID, + .bSourceID = FEATURE_UNIT_ID, +}; + +/* B.4.1 Standard AS Interface Descriptor */ +static struct usb_interface_descriptor as_interface_alt_0_desc = { + .bLength = USB_DT_INTERFACE_SIZE, + .bDescriptorType = USB_DT_INTERFACE, + .bAlternateSetting = 0, + .bNumEndpoints = 0, + .bInterfaceClass = USB_CLASS_AUDIO, + .bInterfaceSubClass = USB_SUBCLASS_AUDIOSTREAMING, +}; + +static struct usb_interface_descriptor as_interface_alt_1_desc = { + .bLength = USB_DT_INTERFACE_SIZE, + .bDescriptorType = USB_DT_INTERFACE, + .bAlternateSetting = 1, + .bNumEndpoints = 1, + .bInterfaceClass = USB_CLASS_AUDIO, + .bInterfaceSubClass = USB_SUBCLASS_AUDIOSTREAMING, +}; + +/* B.4.2 Class-Specific AS Interface Descriptor */ +static struct uac1_as_header_descriptor as_header_desc = { + .bLength = UAC_DT_AS_HEADER_SIZE, + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubtype = UAC_AS_GENERAL, + .bTerminalLink = INPUT_TERMINAL_ID, + .bDelay = 1, + .wFormatTag = UAC_FORMAT_TYPE_I_PCM, +}; + +DECLARE_UAC_FORMAT_TYPE_I_DISCRETE_DESC(1); + +static struct uac_format_type_i_discrete_descriptor_1 as_type_i_desc = { + .bLength = UAC_FORMAT_TYPE_I_DISCRETE_DESC_SIZE(1), + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubtype = UAC_FORMAT_TYPE, + .bFormatType = UAC_FORMAT_TYPE_I, + .bSubframeSize = 2, + .bBitResolution = 16, + .bSamFreqType = 1, +}; + +/* Standard ISO OUT Endpoint Descriptor */ +static struct usb_endpoint_descriptor as_out_ep_desc = { + .bLength = USB_DT_ENDPOINT_AUDIO_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_OUT, + .bmAttributes = USB_ENDPOINT_SYNC_ADAPTIVE + | USB_ENDPOINT_XFER_ISOC, + .wMaxPacketSize = cpu_to_le16(UAC1_OUT_EP_MAX_PACKET_SIZE), + .bInterval = 4, +}; + +/* Class-specific AS ISO OUT Endpoint Descriptor */ +static struct uac_iso_endpoint_descriptor as_iso_out_desc = { + .bLength = UAC_ISO_ENDPOINT_DESC_SIZE, + .bDescriptorType = USB_DT_CS_ENDPOINT, + .bDescriptorSubtype = UAC_EP_GENERAL, + .bmAttributes = 1, + .bLockDelayUnits = 1, + .wLockDelay = __constant_cpu_to_le16(1), +}; + +static struct usb_descriptor_header *f_audio_desc[] = { + (struct usb_descriptor_header *)&ac_interface_desc, + (struct usb_descriptor_header *)&ac_header_desc, + + (struct usb_descriptor_header *)&input_terminal_desc, + (struct usb_descriptor_header *)&output_terminal_desc, + (struct usb_descriptor_header *)&feature_unit_desc, + + (struct usb_descriptor_header *)&as_interface_alt_0_desc, + (struct usb_descriptor_header *)&as_interface_alt_1_desc, + (struct usb_descriptor_header *)&as_header_desc, + + (struct usb_descriptor_header *)&as_type_i_desc, + + (struct usb_descriptor_header *)&as_out_ep_desc, + (struct usb_descriptor_header *)&as_iso_out_desc, + NULL, +}; + +enum { + STR_AC_IF, + STR_INPUT_TERMINAL, + STR_INPUT_TERMINAL_CH_NAMES, + STR_FEAT_DESC_0, + STR_OUTPUT_TERMINAL, + STR_AS_IF_ALT0, + STR_AS_IF_ALT1, +}; + +static struct usb_string strings_uac1[] = { + [STR_AC_IF].s = "AC Interface", + [STR_INPUT_TERMINAL].s = "Input terminal", + [STR_INPUT_TERMINAL_CH_NAMES].s = "Channels", + [STR_FEAT_DESC_0].s = "Volume control & mute", + [STR_OUTPUT_TERMINAL].s = "Output terminal", + [STR_AS_IF_ALT0].s = "AS Interface", + [STR_AS_IF_ALT1].s = "AS Interface", + { }, +}; + +static struct usb_gadget_strings str_uac1 = { + .language = 0x0409, /* en-us */ + .strings = strings_uac1, +}; + +static struct usb_gadget_strings *uac1_strings[] = { + &str_uac1, + NULL, +}; + +/* + * This function is an ALSA sound card following USB Audio Class Spec 1.0. + */ + +/*-------------------------------------------------------------------------*/ +struct f_audio_buf { + u8 *buf; + int actual; + struct list_head list; +}; + +static struct f_audio_buf *f_audio_buffer_alloc(int buf_size) +{ + struct f_audio_buf *copy_buf; + + copy_buf = kzalloc(sizeof *copy_buf, GFP_ATOMIC); + if (!copy_buf) + return ERR_PTR(-ENOMEM); + + copy_buf->buf = kzalloc(buf_size, GFP_ATOMIC); + if (!copy_buf->buf) { + kfree(copy_buf); + return ERR_PTR(-ENOMEM); + } + + return copy_buf; +} + +static void f_audio_buffer_free(struct f_audio_buf *audio_buf) +{ + kfree(audio_buf->buf); + kfree(audio_buf); +} +/*-------------------------------------------------------------------------*/ + +struct f_audio { + struct gaudio card; + + u8 ac_intf, ac_alt; + u8 as_intf, as_alt; + + /* endpoints handle full and/or high speeds */ + struct usb_ep *out_ep; + + spinlock_t lock; + struct f_audio_buf *copy_buf; + struct work_struct playback_work; + struct list_head play_queue; + + /* Control Set command */ + struct list_head cs; + u8 set_cmd; + struct usb_audio_control *set_con; +}; + +static inline struct f_audio *func_to_audio(struct usb_function *f) +{ + return container_of(f, struct f_audio, card.func); +} + +/*-------------------------------------------------------------------------*/ + +static void f_audio_playback_work(struct work_struct *data) +{ + struct f_audio *audio = container_of(data, struct f_audio, + playback_work); + struct f_audio_buf *play_buf; + + spin_lock_irq(&audio->lock); + if (list_empty(&audio->play_queue)) { + spin_unlock_irq(&audio->lock); + return; + } + play_buf = list_first_entry(&audio->play_queue, + struct f_audio_buf, list); + list_del(&play_buf->list); + spin_unlock_irq(&audio->lock); + + u_audio_playback(&audio->card, play_buf->buf, play_buf->actual); + f_audio_buffer_free(play_buf); +} + +static int f_audio_out_ep_complete(struct usb_ep *ep, struct usb_request *req) +{ + struct f_audio *audio = req->context; + struct usb_composite_dev *cdev = audio->card.func.config->cdev; + struct f_audio_buf *copy_buf = audio->copy_buf; + struct f_uac1_legacy_opts *opts; + int audio_buf_size; + int err; + + opts = container_of(audio->card.func.fi, struct f_uac1_legacy_opts, + func_inst); + audio_buf_size = opts->audio_buf_size; + + if (!copy_buf) + return -EINVAL; + + /* Copy buffer is full, add it to the play_queue */ + if (audio_buf_size - copy_buf->actual < req->actual) { + list_add_tail(©_buf->list, &audio->play_queue); + schedule_work(&audio->playback_work); + copy_buf = f_audio_buffer_alloc(audio_buf_size); + if (IS_ERR(copy_buf)) + return -ENOMEM; + } + + memcpy(copy_buf->buf + copy_buf->actual, req->buf, req->actual); + copy_buf->actual += req->actual; + audio->copy_buf = copy_buf; + + err = usb_ep_queue(ep, req, GFP_ATOMIC); + if (err) + ERROR(cdev, "%s queue req: %d\n", ep->name, err); + + return 0; + +} + +static void f_audio_complete(struct usb_ep *ep, struct usb_request *req) +{ + struct f_audio *audio = req->context; + int status = req->status; + u32 data = 0; + struct usb_ep *out_ep = audio->out_ep; + + switch (status) { + + case 0: /* normal completion? */ + if (ep == out_ep) + f_audio_out_ep_complete(ep, req); + else if (audio->set_con) { + memcpy(&data, req->buf, req->length); + audio->set_con->set(audio->set_con, audio->set_cmd, + le16_to_cpu(data)); + audio->set_con = NULL; + } + break; + default: + break; + } +} + +static int audio_set_intf_req(struct usb_function *f, + const struct usb_ctrlrequest *ctrl) +{ + struct f_audio *audio = func_to_audio(f); + struct usb_composite_dev *cdev = f->config->cdev; + struct usb_request *req = cdev->req; + u8 id = ((le16_to_cpu(ctrl->wIndex) >> 8) & 0xFF); + u16 len = le16_to_cpu(ctrl->wLength); + u16 w_value = le16_to_cpu(ctrl->wValue); + u8 con_sel = (w_value >> 8) & 0xFF; + u8 cmd = (ctrl->bRequest & 0x0F); + struct usb_audio_control_selector *cs; + struct usb_audio_control *con; + + DBG(cdev, "bRequest 0x%x, w_value 0x%04x, len %d, entity %d\n", + ctrl->bRequest, w_value, len, id); + + list_for_each_entry(cs, &audio->cs, list) { + if (cs->id == id) { + list_for_each_entry(con, &cs->control, list) { + if (con->type == con_sel) { + audio->set_con = con; + break; + } + } + break; + } + } + + audio->set_cmd = cmd; + req->context = audio; + req->complete = f_audio_complete; + + return len; +} + +static int audio_get_intf_req(struct usb_function *f, + const struct usb_ctrlrequest *ctrl) +{ + struct f_audio *audio = func_to_audio(f); + struct usb_composite_dev *cdev = f->config->cdev; + struct usb_request *req = cdev->req; + int value = -EOPNOTSUPP; + u8 id = ((le16_to_cpu(ctrl->wIndex) >> 8) & 0xFF); + u16 len = le16_to_cpu(ctrl->wLength); + u16 w_value = le16_to_cpu(ctrl->wValue); + u8 con_sel = (w_value >> 8) & 0xFF; + u8 cmd = (ctrl->bRequest & 0x0F); + struct usb_audio_control_selector *cs; + struct usb_audio_control *con; + + DBG(cdev, "bRequest 0x%x, w_value 0x%04x, len %d, entity %d\n", + ctrl->bRequest, w_value, len, id); + + list_for_each_entry(cs, &audio->cs, list) { + if (cs->id == id) { + list_for_each_entry(con, &cs->control, list) { + if (con->type == con_sel && con->get) { + value = con->get(con, cmd); + break; + } + } + break; + } + } + + req->context = audio; + req->complete = f_audio_complete; + len = min_t(size_t, sizeof(value), len); + memcpy(req->buf, &value, len); + + return len; +} + +static int audio_set_endpoint_req(struct usb_function *f, + const struct usb_ctrlrequest *ctrl) +{ + struct usb_composite_dev *cdev = f->config->cdev; + int value = -EOPNOTSUPP; + u16 ep = le16_to_cpu(ctrl->wIndex); + u16 len = le16_to_cpu(ctrl->wLength); + u16 w_value = le16_to_cpu(ctrl->wValue); + + DBG(cdev, "bRequest 0x%x, w_value 0x%04x, len %d, endpoint %d\n", + ctrl->bRequest, w_value, len, ep); + + switch (ctrl->bRequest) { + case UAC_SET_CUR: + value = len; + break; + + case UAC_SET_MIN: + break; + + case UAC_SET_MAX: + break; + + case UAC_SET_RES: + break; + + case UAC_SET_MEM: + break; + + default: + break; + } + + return value; +} + +static int audio_get_endpoint_req(struct usb_function *f, + const struct usb_ctrlrequest *ctrl) +{ + struct usb_composite_dev *cdev = f->config->cdev; + int value = -EOPNOTSUPP; + u8 ep = ((le16_to_cpu(ctrl->wIndex) >> 8) & 0xFF); + u16 len = le16_to_cpu(ctrl->wLength); + u16 w_value = le16_to_cpu(ctrl->wValue); + + DBG(cdev, "bRequest 0x%x, w_value 0x%04x, len %d, endpoint %d\n", + ctrl->bRequest, w_value, len, ep); + + switch (ctrl->bRequest) { + case UAC_GET_CUR: + case UAC_GET_MIN: + case UAC_GET_MAX: + case UAC_GET_RES: + value = len; + break; + case UAC_GET_MEM: + break; + default: + break; + } + + return value; +} + +static int +f_audio_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl) +{ + struct usb_composite_dev *cdev = f->config->cdev; + struct usb_request *req = cdev->req; + int value = -EOPNOTSUPP; + u16 w_index = le16_to_cpu(ctrl->wIndex); + u16 w_value = le16_to_cpu(ctrl->wValue); + u16 w_length = le16_to_cpu(ctrl->wLength); + + /* composite driver infrastructure handles everything; interface + * activation uses set_alt(). + */ + switch (ctrl->bRequestType) { + case USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE: + value = audio_set_intf_req(f, ctrl); + break; + + case USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE: + value = audio_get_intf_req(f, ctrl); + break; + + case USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_ENDPOINT: + value = audio_set_endpoint_req(f, ctrl); + break; + + case USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_ENDPOINT: + value = audio_get_endpoint_req(f, ctrl); + break; + + default: + ERROR(cdev, "invalid control req%02x.%02x v%04x i%04x l%d\n", + ctrl->bRequestType, ctrl->bRequest, + w_value, w_index, w_length); + } + + /* respond with data transfer or status phase? */ + if (value >= 0) { + DBG(cdev, "audio req%02x.%02x v%04x i%04x l%d\n", + ctrl->bRequestType, ctrl->bRequest, + w_value, w_index, w_length); + req->zero = 0; + req->length = value; + value = usb_ep_queue(cdev->gadget->ep0, req, GFP_ATOMIC); + if (value < 0) + ERROR(cdev, "audio response on err %d\n", value); + } + + /* device either stalls (value < 0) or reports success */ + return value; +} + +static int f_audio_set_alt(struct usb_function *f, unsigned intf, unsigned alt) +{ + struct f_audio *audio = func_to_audio(f); + struct usb_composite_dev *cdev = f->config->cdev; + struct usb_ep *out_ep = audio->out_ep; + struct usb_request *req; + struct f_uac1_legacy_opts *opts; + int req_buf_size, req_count, audio_buf_size; + int i = 0, err = 0; + + DBG(cdev, "intf %d, alt %d\n", intf, alt); + + opts = container_of(f->fi, struct f_uac1_legacy_opts, func_inst); + req_buf_size = opts->req_buf_size; + req_count = opts->req_count; + audio_buf_size = opts->audio_buf_size; + + /* No i/f has more than 2 alt settings */ + if (alt > 1) { + ERROR(cdev, "%s:%d Error!\n", __func__, __LINE__); + return -EINVAL; + } + + if (intf == audio->ac_intf) { + /* Control I/f has only 1 AltSetting - 0 */ + if (alt) { + ERROR(cdev, "%s:%d Error!\n", __func__, __LINE__); + return -EINVAL; + } + return 0; + } else if (intf == audio->as_intf) { + if (alt == 1) { + err = config_ep_by_speed(cdev->gadget, f, out_ep); + if (err) + return err; + + usb_ep_enable(out_ep); + audio->copy_buf = f_audio_buffer_alloc(audio_buf_size); + if (IS_ERR(audio->copy_buf)) + return -ENOMEM; + + /* + * allocate a bunch of read buffers + * and queue them all at once. + */ + for (i = 0; i < req_count && err == 0; i++) { + req = usb_ep_alloc_request(out_ep, GFP_ATOMIC); + if (req) { + req->buf = kzalloc(req_buf_size, + GFP_ATOMIC); + if (req->buf) { + req->length = req_buf_size; + req->context = audio; + req->complete = + f_audio_complete; + err = usb_ep_queue(out_ep, + req, GFP_ATOMIC); + if (err) + ERROR(cdev, + "%s queue req: %d\n", + out_ep->name, err); + } else + err = -ENOMEM; + } else + err = -ENOMEM; + } + + } else { + struct f_audio_buf *copy_buf = audio->copy_buf; + if (copy_buf) { + list_add_tail(©_buf->list, + &audio->play_queue); + schedule_work(&audio->playback_work); + } + } + audio->as_alt = alt; + } + + return err; +} + +static int f_audio_get_alt(struct usb_function *f, unsigned intf) +{ + struct f_audio *audio = func_to_audio(f); + struct usb_composite_dev *cdev = f->config->cdev; + + if (intf == audio->ac_intf) + return audio->ac_alt; + else if (intf == audio->as_intf) + return audio->as_alt; + else + ERROR(cdev, "%s:%d Invalid Interface %d!\n", + __func__, __LINE__, intf); + + return -EINVAL; +} + +static void f_audio_disable(struct usb_function *f) +{ + return; +} + +/*-------------------------------------------------------------------------*/ + +static void f_audio_build_desc(struct f_audio *audio) +{ + struct gaudio *card = &audio->card; + u8 *sam_freq; + int rate; + + /* Set channel numbers */ + input_terminal_desc.bNrChannels = u_audio_get_playback_channels(card); + as_type_i_desc.bNrChannels = u_audio_get_playback_channels(card); + + /* Set sample rates */ + rate = u_audio_get_playback_rate(card); + sam_freq = as_type_i_desc.tSamFreq[0]; + memcpy(sam_freq, &rate, 3); + + /* Todo: Set Sample bits and other parameters */ + + return; +} + +/* audio function driver setup/binding */ +static int +f_audio_bind(struct usb_configuration *c, struct usb_function *f) +{ + struct usb_composite_dev *cdev = c->cdev; + struct f_audio *audio = func_to_audio(f); + struct usb_string *us; + int status; + struct usb_ep *ep = NULL; + struct f_uac1_legacy_opts *audio_opts; + + audio_opts = container_of(f->fi, struct f_uac1_legacy_opts, func_inst); + audio->card.gadget = c->cdev->gadget; + /* set up ASLA audio devices */ + if (!audio_opts->bound) { + status = gaudio_setup(&audio->card); + if (status < 0) + return status; + audio_opts->bound = true; + } + us = usb_gstrings_attach(cdev, uac1_strings, ARRAY_SIZE(strings_uac1)); + if (IS_ERR(us)) + return PTR_ERR(us); + ac_interface_desc.iInterface = us[STR_AC_IF].id; + input_terminal_desc.iTerminal = us[STR_INPUT_TERMINAL].id; + input_terminal_desc.iChannelNames = us[STR_INPUT_TERMINAL_CH_NAMES].id; + feature_unit_desc.iFeature = us[STR_FEAT_DESC_0].id; + output_terminal_desc.iTerminal = us[STR_OUTPUT_TERMINAL].id; + as_interface_alt_0_desc.iInterface = us[STR_AS_IF_ALT0].id; + as_interface_alt_1_desc.iInterface = us[STR_AS_IF_ALT1].id; + + + f_audio_build_desc(audio); + + /* allocate instance-specific interface IDs, and patch descriptors */ + status = usb_interface_id(c, f); + if (status < 0) + goto fail; + ac_interface_desc.bInterfaceNumber = status; + audio->ac_intf = status; + audio->ac_alt = 0; + + status = usb_interface_id(c, f); + if (status < 0) + goto fail; + as_interface_alt_0_desc.bInterfaceNumber = status; + as_interface_alt_1_desc.bInterfaceNumber = status; + audio->as_intf = status; + audio->as_alt = 0; + + status = -ENODEV; + + /* allocate instance-specific endpoints */ + ep = usb_ep_autoconfig(cdev->gadget, &as_out_ep_desc); + if (!ep) + goto fail; + audio->out_ep = ep; + audio->out_ep->desc = &as_out_ep_desc; + + status = -ENOMEM; + + /* copy descriptors, and track endpoint copies */ + status = usb_assign_descriptors(f, f_audio_desc, f_audio_desc, NULL, + NULL); + if (status) + goto fail; + return 0; + +fail: + gaudio_cleanup(&audio->card); + return status; +} + +/*-------------------------------------------------------------------------*/ + +static int generic_set_cmd(struct usb_audio_control *con, u8 cmd, int value) +{ + con->data[cmd] = value; + + return 0; +} + +static int generic_get_cmd(struct usb_audio_control *con, u8 cmd) +{ + return con->data[cmd]; +} + +/* Todo: add more control selecotor dynamically */ +static int control_selector_init(struct f_audio *audio) +{ + INIT_LIST_HEAD(&audio->cs); + list_add(&feature_unit.list, &audio->cs); + + INIT_LIST_HEAD(&feature_unit.control); + list_add(&mute_control.list, &feature_unit.control); + list_add(&volume_control.list, &feature_unit.control); + + volume_control.data[UAC__CUR] = 0xffc0; + volume_control.data[UAC__MIN] = 0xe3a0; + volume_control.data[UAC__MAX] = 0xfff0; + volume_control.data[UAC__RES] = 0x0030; + + return 0; +} + +static inline +struct f_uac1_legacy_opts *to_f_uac1_opts(struct config_item *item) +{ + return container_of(to_config_group(item), struct f_uac1_legacy_opts, + func_inst.group); +} + +static void f_uac1_attr_release(struct config_item *item) +{ + struct f_uac1_legacy_opts *opts = to_f_uac1_opts(item); + + usb_put_function_instance(&opts->func_inst); +} + +static struct configfs_item_operations f_uac1_item_ops = { + .release = f_uac1_attr_release, +}; + +#define UAC1_INT_ATTRIBUTE(name) \ +static ssize_t f_uac1_opts_##name##_show(struct config_item *item, \ + char *page) \ +{ \ + struct f_uac1_legacy_opts *opts = to_f_uac1_opts(item); \ + int result; \ + \ + mutex_lock(&opts->lock); \ + result = sprintf(page, "%u\n", opts->name); \ + mutex_unlock(&opts->lock); \ + \ + return result; \ +} \ + \ +static ssize_t f_uac1_opts_##name##_store(struct config_item *item, \ + const char *page, size_t len) \ +{ \ + struct f_uac1_legacy_opts *opts = to_f_uac1_opts(item); \ + int ret; \ + u32 num; \ + \ + mutex_lock(&opts->lock); \ + if (opts->refcnt) { \ + ret = -EBUSY; \ + goto end; \ + } \ + \ + ret = kstrtou32(page, 0, &num); \ + if (ret) \ + goto end; \ + \ + opts->name = num; \ + ret = len; \ + \ +end: \ + mutex_unlock(&opts->lock); \ + return ret; \ +} \ + \ +CONFIGFS_ATTR(f_uac1_opts_, name) + +UAC1_INT_ATTRIBUTE(req_buf_size); +UAC1_INT_ATTRIBUTE(req_count); +UAC1_INT_ATTRIBUTE(audio_buf_size); + +#define UAC1_STR_ATTRIBUTE(name) \ +static ssize_t f_uac1_opts_##name##_show(struct config_item *item, \ + char *page) \ +{ \ + struct f_uac1_legacy_opts *opts = to_f_uac1_opts(item); \ + int result; \ + \ + mutex_lock(&opts->lock); \ + result = sprintf(page, "%s\n", opts->name); \ + mutex_unlock(&opts->lock); \ + \ + return result; \ +} \ + \ +static ssize_t f_uac1_opts_##name##_store(struct config_item *item, \ + const char *page, size_t len) \ +{ \ + struct f_uac1_legacy_opts *opts = to_f_uac1_opts(item); \ + int ret = -EBUSY; \ + char *tmp; \ + \ + mutex_lock(&opts->lock); \ + if (opts->refcnt) \ + goto end; \ + \ + tmp = kstrndup(page, len, GFP_KERNEL); \ + if (tmp) { \ + ret = -ENOMEM; \ + goto end; \ + } \ + if (opts->name##_alloc) \ + kfree(opts->name); \ + opts->name##_alloc = true; \ + opts->name = tmp; \ + ret = len; \ + \ +end: \ + mutex_unlock(&opts->lock); \ + return ret; \ +} \ + \ +CONFIGFS_ATTR(f_uac1_opts_, name) + +UAC1_STR_ATTRIBUTE(fn_play); +UAC1_STR_ATTRIBUTE(fn_cap); +UAC1_STR_ATTRIBUTE(fn_cntl); + +static struct configfs_attribute *f_uac1_attrs[] = { + &f_uac1_opts_attr_req_buf_size, + &f_uac1_opts_attr_req_count, + &f_uac1_opts_attr_audio_buf_size, + &f_uac1_opts_attr_fn_play, + &f_uac1_opts_attr_fn_cap, + &f_uac1_opts_attr_fn_cntl, + NULL, +}; + +static struct config_item_type f_uac1_func_type = { + .ct_item_ops = &f_uac1_item_ops, + .ct_attrs = f_uac1_attrs, + .ct_owner = THIS_MODULE, +}; + +static void f_audio_free_inst(struct usb_function_instance *f) +{ + struct f_uac1_legacy_opts *opts; + + opts = container_of(f, struct f_uac1_legacy_opts, func_inst); + if (opts->fn_play_alloc) + kfree(opts->fn_play); + if (opts->fn_cap_alloc) + kfree(opts->fn_cap); + if (opts->fn_cntl_alloc) + kfree(opts->fn_cntl); + kfree(opts); +} + +static struct usb_function_instance *f_audio_alloc_inst(void) +{ + struct f_uac1_legacy_opts *opts; + + opts = kzalloc(sizeof(*opts), GFP_KERNEL); + if (!opts) + return ERR_PTR(-ENOMEM); + + mutex_init(&opts->lock); + opts->func_inst.free_func_inst = f_audio_free_inst; + + config_group_init_type_name(&opts->func_inst.group, "", + &f_uac1_func_type); + + opts->req_buf_size = UAC1_OUT_EP_MAX_PACKET_SIZE; + opts->req_count = UAC1_REQ_COUNT; + opts->audio_buf_size = UAC1_AUDIO_BUF_SIZE; + opts->fn_play = FILE_PCM_PLAYBACK; + opts->fn_cap = FILE_PCM_CAPTURE; + opts->fn_cntl = FILE_CONTROL; + return &opts->func_inst; +} + +static void f_audio_free(struct usb_function *f) +{ + struct f_audio *audio = func_to_audio(f); + struct f_uac1_legacy_opts *opts; + + gaudio_cleanup(&audio->card); + opts = container_of(f->fi, struct f_uac1_legacy_opts, func_inst); + kfree(audio); + mutex_lock(&opts->lock); + --opts->refcnt; + mutex_unlock(&opts->lock); +} + +static void f_audio_unbind(struct usb_configuration *c, struct usb_function *f) +{ + usb_free_all_descriptors(f); +} + +static struct usb_function *f_audio_alloc(struct usb_function_instance *fi) +{ + struct f_audio *audio; + struct f_uac1_legacy_opts *opts; + + /* allocate and initialize one new instance */ + audio = kzalloc(sizeof(*audio), GFP_KERNEL); + if (!audio) + return ERR_PTR(-ENOMEM); + + audio->card.func.name = "g_audio"; + + opts = container_of(fi, struct f_uac1_legacy_opts, func_inst); + mutex_lock(&opts->lock); + ++opts->refcnt; + mutex_unlock(&opts->lock); + INIT_LIST_HEAD(&audio->play_queue); + spin_lock_init(&audio->lock); + + audio->card.func.bind = f_audio_bind; + audio->card.func.unbind = f_audio_unbind; + audio->card.func.set_alt = f_audio_set_alt; + audio->card.func.get_alt = f_audio_get_alt; + audio->card.func.setup = f_audio_setup; + audio->card.func.disable = f_audio_disable; + audio->card.func.free_func = f_audio_free; + + control_selector_init(audio); + + INIT_WORK(&audio->playback_work, f_audio_playback_work); + + return &audio->card.func; +} + +DECLARE_USB_FUNCTION_INIT(uac1_legacy, f_audio_alloc_inst, f_audio_alloc); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Bryan Wu"); diff --git a/drivers/usb/gadget/function/f_uac2.c b/drivers/usb/gadget/function/f_uac2.c index f6a0d3a..9082ce2 100644 --- a/drivers/usb/gadget/function/f_uac2.c +++ b/drivers/usb/gadget/function/f_uac2.c @@ -13,13 +13,9 @@ #include <linux/usb/audio.h> #include <linux/usb/audio-v2.h> -#include <linux/platform_device.h> #include <linux/module.h> -#include <sound/core.h> -#include <sound/pcm.h> -#include <sound/pcm_params.h> - +#include "u_audio.h" #include "u_uac2.h" /* @@ -51,506 +47,23 @@ #define UNFLW_CTRL 8 #define OVFLW_CTRL 10 -static const char *uac2_name = "snd_uac2"; - -struct uac2_req { - struct uac2_rtd_params *pp; /* parent param */ - struct usb_request *req; -}; - -struct uac2_rtd_params { - struct snd_uac2_chip *uac2; /* parent chip */ - bool ep_enabled; /* if the ep is enabled */ - /* Size of the ring buffer */ - size_t dma_bytes; - unsigned char *dma_area; - - struct snd_pcm_substream *ss; - - /* Ring buffer */ - ssize_t hw_ptr; - - void *rbuf; - - size_t period_size; - - unsigned max_psize; - struct uac2_req *ureq; - - spinlock_t lock; -}; - -struct snd_uac2_chip { - struct platform_device pdev; - struct platform_driver pdrv; - - struct uac2_rtd_params p_prm; - struct uac2_rtd_params c_prm; - - struct snd_card *card; - struct snd_pcm *pcm; - - /* timekeeping for the playback endpoint */ - unsigned int p_interval; - unsigned int p_residue; - - /* pre-calculated values for playback iso completion */ - unsigned int p_pktsize; - unsigned int p_pktsize_residue; - unsigned int p_framesize; +struct f_uac2 { + struct g_audio g_audio; + u8 ac_intf, as_in_intf, as_out_intf; + u8 ac_alt, as_in_alt, as_out_alt; /* needed for get_alt() */ }; -#define BUFF_SIZE_MAX (PAGE_SIZE * 16) -#define PRD_SIZE_MAX PAGE_SIZE -#define MIN_PERIODS 4 - -static struct snd_pcm_hardware uac2_pcm_hardware = { - .info = SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER - | SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID - | SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME, - .rates = SNDRV_PCM_RATE_CONTINUOUS, - .periods_max = BUFF_SIZE_MAX / PRD_SIZE_MAX, - .buffer_bytes_max = BUFF_SIZE_MAX, - .period_bytes_max = PRD_SIZE_MAX, - .periods_min = MIN_PERIODS, -}; - -struct audio_dev { - u8 ac_intf, ac_alt; - u8 as_out_intf, as_out_alt; - u8 as_in_intf, as_in_alt; - - struct usb_ep *in_ep, *out_ep; - struct usb_function func; - - /* The ALSA Sound Card it represents on the USB-Client side */ - struct snd_uac2_chip uac2; -}; - -static inline -struct audio_dev *func_to_agdev(struct usb_function *f) +static inline struct f_uac2 *func_to_uac2(struct usb_function *f) { - return container_of(f, struct audio_dev, func); + return container_of(f, struct f_uac2, g_audio.func); } static inline -struct audio_dev *uac2_to_agdev(struct snd_uac2_chip *u) -{ - return container_of(u, struct audio_dev, uac2); -} - -static inline -struct snd_uac2_chip *pdev_to_uac2(struct platform_device *p) -{ - return container_of(p, struct snd_uac2_chip, pdev); -} - -static inline -struct f_uac2_opts *agdev_to_uac2_opts(struct audio_dev *agdev) +struct f_uac2_opts *g_audio_to_uac2_opts(struct g_audio *agdev) { return container_of(agdev->func.fi, struct f_uac2_opts, func_inst); } -static inline -uint num_channels(uint chanmask) -{ - uint num = 0; - - while (chanmask) { - num += (chanmask & 1); - chanmask >>= 1; - } - - return num; -} - -static void -agdev_iso_complete(struct usb_ep *ep, struct usb_request *req) -{ - unsigned pending; - unsigned long flags; - unsigned int hw_ptr; - bool update_alsa = false; - int status = req->status; - struct uac2_req *ur = req->context; - struct snd_pcm_substream *substream; - struct uac2_rtd_params *prm = ur->pp; - struct snd_uac2_chip *uac2 = prm->uac2; - - /* i/f shutting down */ - if (!prm->ep_enabled || req->status == -ESHUTDOWN) - return; - - /* - * We can't really do much about bad xfers. - * Afterall, the ISOCH xfers could fail legitimately. - */ - if (status) - pr_debug("%s: iso_complete status(%d) %d/%d\n", - __func__, status, req->actual, req->length); - - substream = prm->ss; - - /* Do nothing if ALSA isn't active */ - if (!substream) - goto exit; - - spin_lock_irqsave(&prm->lock, flags); - - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { - /* - * For each IN packet, take the quotient of the current data - * rate and the endpoint's interval as the base packet size. - * If there is a residue from this division, add it to the - * residue accumulator. - */ - req->length = uac2->p_pktsize; - uac2->p_residue += uac2->p_pktsize_residue; - - /* - * Whenever there are more bytes in the accumulator than we - * need to add one more sample frame, increase this packet's - * size and decrease the accumulator. - */ - if (uac2->p_residue / uac2->p_interval >= uac2->p_framesize) { - req->length += uac2->p_framesize; - uac2->p_residue -= uac2->p_framesize * - uac2->p_interval; - } - - req->actual = req->length; - } - - pending = prm->hw_ptr % prm->period_size; - pending += req->actual; - if (pending >= prm->period_size) - update_alsa = true; - - hw_ptr = prm->hw_ptr; - prm->hw_ptr = (prm->hw_ptr + req->actual) % prm->dma_bytes; - - spin_unlock_irqrestore(&prm->lock, flags); - - /* Pack USB load in ALSA ring buffer */ - pending = prm->dma_bytes - hw_ptr; - - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { - if (unlikely(pending < req->actual)) { - memcpy(req->buf, prm->dma_area + hw_ptr, pending); - memcpy(req->buf + pending, prm->dma_area, - req->actual - pending); - } else { - memcpy(req->buf, prm->dma_area + hw_ptr, req->actual); - } - } else { - if (unlikely(pending < req->actual)) { - memcpy(prm->dma_area + hw_ptr, req->buf, pending); - memcpy(prm->dma_area, req->buf + pending, - req->actual - pending); - } else { - memcpy(prm->dma_area + hw_ptr, req->buf, req->actual); - } - } - -exit: - if (usb_ep_queue(ep, req, GFP_ATOMIC)) - dev_err(&uac2->pdev.dev, "%d Error!\n", __LINE__); - - if (update_alsa) - snd_pcm_period_elapsed(substream); - - return; -} - -static int -uac2_pcm_trigger(struct snd_pcm_substream *substream, int cmd) -{ - struct snd_uac2_chip *uac2 = snd_pcm_substream_chip(substream); - struct audio_dev *agdev = uac2_to_agdev(uac2); - struct f_uac2_opts *uac2_opts = agdev_to_uac2_opts(agdev); - struct uac2_rtd_params *prm; - unsigned long flags; - int err = 0; - - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) - prm = &uac2->p_prm; - else - prm = &uac2->c_prm; - - spin_lock_irqsave(&prm->lock, flags); - - /* Reset */ - prm->hw_ptr = 0; - - switch (cmd) { - case SNDRV_PCM_TRIGGER_START: - case SNDRV_PCM_TRIGGER_RESUME: - prm->ss = substream; - break; - case SNDRV_PCM_TRIGGER_STOP: - case SNDRV_PCM_TRIGGER_SUSPEND: - prm->ss = NULL; - break; - default: - err = -EINVAL; - } - - spin_unlock_irqrestore(&prm->lock, flags); - - /* Clear buffer after Play stops */ - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && !prm->ss) - memset(prm->rbuf, 0, prm->max_psize * uac2_opts->req_number); - - return err; -} - -static snd_pcm_uframes_t uac2_pcm_pointer(struct snd_pcm_substream *substream) -{ - struct snd_uac2_chip *uac2 = snd_pcm_substream_chip(substream); - struct uac2_rtd_params *prm; - - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) - prm = &uac2->p_prm; - else - prm = &uac2->c_prm; - - return bytes_to_frames(substream->runtime, prm->hw_ptr); -} - -static int uac2_pcm_hw_params(struct snd_pcm_substream *substream, - struct snd_pcm_hw_params *hw_params) -{ - struct snd_uac2_chip *uac2 = snd_pcm_substream_chip(substream); - struct uac2_rtd_params *prm; - int err; - - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) - prm = &uac2->p_prm; - else - prm = &uac2->c_prm; - - err = snd_pcm_lib_malloc_pages(substream, - params_buffer_bytes(hw_params)); - if (err >= 0) { - prm->dma_bytes = substream->runtime->dma_bytes; - prm->dma_area = substream->runtime->dma_area; - prm->period_size = params_period_bytes(hw_params); - } - - return err; -} - -static int uac2_pcm_hw_free(struct snd_pcm_substream *substream) -{ - struct snd_uac2_chip *uac2 = snd_pcm_substream_chip(substream); - struct uac2_rtd_params *prm; - - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) - prm = &uac2->p_prm; - else - prm = &uac2->c_prm; - - prm->dma_area = NULL; - prm->dma_bytes = 0; - prm->period_size = 0; - - return snd_pcm_lib_free_pages(substream); -} - -static int uac2_pcm_open(struct snd_pcm_substream *substream) -{ - struct snd_uac2_chip *uac2 = snd_pcm_substream_chip(substream); - struct snd_pcm_runtime *runtime = substream->runtime; - struct audio_dev *audio_dev; - struct f_uac2_opts *opts; - int p_ssize, c_ssize; - int p_srate, c_srate; - int p_chmask, c_chmask; - - audio_dev = uac2_to_agdev(uac2); - opts = container_of(audio_dev->func.fi, struct f_uac2_opts, func_inst); - p_ssize = opts->p_ssize; - c_ssize = opts->c_ssize; - p_srate = opts->p_srate; - c_srate = opts->c_srate; - p_chmask = opts->p_chmask; - c_chmask = opts->c_chmask; - uac2->p_residue = 0; - - runtime->hw = uac2_pcm_hardware; - - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { - spin_lock_init(&uac2->p_prm.lock); - runtime->hw.rate_min = p_srate; - switch (p_ssize) { - case 3: - runtime->hw.formats = SNDRV_PCM_FMTBIT_S24_3LE; - break; - case 4: - runtime->hw.formats = SNDRV_PCM_FMTBIT_S32_LE; - break; - default: - runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE; - break; - } - runtime->hw.channels_min = num_channels(p_chmask); - runtime->hw.period_bytes_min = 2 * uac2->p_prm.max_psize - / runtime->hw.periods_min; - } else { - spin_lock_init(&uac2->c_prm.lock); - runtime->hw.rate_min = c_srate; - switch (c_ssize) { - case 3: - runtime->hw.formats = SNDRV_PCM_FMTBIT_S24_3LE; - break; - case 4: - runtime->hw.formats = SNDRV_PCM_FMTBIT_S32_LE; - break; - default: - runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE; - break; - } - runtime->hw.channels_min = num_channels(c_chmask); - runtime->hw.period_bytes_min = 2 * uac2->c_prm.max_psize - / runtime->hw.periods_min; - } - - runtime->hw.rate_max = runtime->hw.rate_min; - runtime->hw.channels_max = runtime->hw.channels_min; - - snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); - - return 0; -} - -/* ALSA cries without these function pointers */ -static int uac2_pcm_null(struct snd_pcm_substream *substream) -{ - return 0; -} - -static struct snd_pcm_ops uac2_pcm_ops = { - .open = uac2_pcm_open, - .close = uac2_pcm_null, - .ioctl = snd_pcm_lib_ioctl, - .hw_params = uac2_pcm_hw_params, - .hw_free = uac2_pcm_hw_free, - .trigger = uac2_pcm_trigger, - .pointer = uac2_pcm_pointer, - .prepare = uac2_pcm_null, -}; - -static int snd_uac2_probe(struct platform_device *pdev) -{ - struct snd_uac2_chip *uac2 = pdev_to_uac2(pdev); - struct snd_card *card; - struct snd_pcm *pcm; - struct audio_dev *audio_dev; - struct f_uac2_opts *opts; - int err; - int p_chmask, c_chmask; - - audio_dev = uac2_to_agdev(uac2); - opts = container_of(audio_dev->func.fi, struct f_uac2_opts, func_inst); - p_chmask = opts->p_chmask; - c_chmask = opts->c_chmask; - - /* Choose any slot, with no id */ - err = snd_card_new(&pdev->dev, -1, NULL, THIS_MODULE, 0, &card); - if (err < 0) - return err; - - uac2->card = card; - - /* - * Create first PCM device - * Create a substream only for non-zero channel streams - */ - err = snd_pcm_new(uac2->card, "UAC2 PCM", 0, - p_chmask ? 1 : 0, c_chmask ? 1 : 0, &pcm); - if (err < 0) - goto snd_fail; - - strcpy(pcm->name, "UAC2 PCM"); - pcm->private_data = uac2; - - uac2->pcm = pcm; - - snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &uac2_pcm_ops); - snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &uac2_pcm_ops); - - strcpy(card->driver, "UAC2_Gadget"); - strcpy(card->shortname, "UAC2_Gadget"); - sprintf(card->longname, "UAC2_Gadget %i", pdev->id); - - snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS, - snd_dma_continuous_data(GFP_KERNEL), 0, BUFF_SIZE_MAX); - - err = snd_card_register(card); - if (!err) { - platform_set_drvdata(pdev, card); - return 0; - } - -snd_fail: - snd_card_free(card); - - uac2->pcm = NULL; - uac2->card = NULL; - - return err; -} - -static int snd_uac2_remove(struct platform_device *pdev) -{ - struct snd_card *card = platform_get_drvdata(pdev); - - if (card) - return snd_card_free(card); - - return 0; -} - -static void snd_uac2_release(struct device *dev) -{ - dev_dbg(dev, "releasing '%s'\n", dev_name(dev)); -} - -static int alsa_uac2_init(struct audio_dev *agdev) -{ - struct snd_uac2_chip *uac2 = &agdev->uac2; - int err; - - uac2->pdrv.probe = snd_uac2_probe; - uac2->pdrv.remove = snd_uac2_remove; - uac2->pdrv.driver.name = uac2_name; - - uac2->pdev.id = 0; - uac2->pdev.name = uac2_name; - uac2->pdev.dev.release = snd_uac2_release; - - /* Register snd_uac2 driver */ - err = platform_driver_register(&uac2->pdrv); - if (err) - return err; - - /* Register snd_uac2 device */ - err = platform_device_register(&uac2->pdev); - if (err) - platform_driver_unregister(&uac2->pdrv); - - return err; -} - -static void alsa_uac2_exit(struct audio_dev *agdev) -{ - struct snd_uac2_chip *uac2 = &agdev->uac2; - - platform_driver_unregister(&uac2->pdrv); - platform_device_unregister(&uac2->pdev); -} - - /* --------- USB Function Interface ------------- */ enum { @@ -938,32 +451,6 @@ struct cntrl_range_lay3 { __u32 dRES; } __packed; -static inline void -free_ep(struct uac2_rtd_params *prm, struct usb_ep *ep) -{ - struct snd_uac2_chip *uac2 = prm->uac2; - struct audio_dev *agdev = uac2_to_agdev(uac2); - struct f_uac2_opts *uac2_opts = agdev_to_uac2_opts(agdev); - int i; - - if (!prm->ep_enabled) - return; - - prm->ep_enabled = false; - - for (i = 0; i < uac2_opts->req_number; i++) { - if (prm->ureq[i].req) { - usb_ep_dequeue(ep, prm->ureq[i].req); - usb_ep_free_request(ep, prm->ureq[i].req); - prm->ureq[i].req = NULL; - } - } - - if (usb_ep_disable(ep)) - dev_err(&uac2->pdev.dev, - "%s:%d Error!\n", __func__, __LINE__); -} - static void set_ep_max_packet_size(const struct f_uac2_opts *uac2_opts, struct usb_endpoint_descriptor *ep_desc, unsigned int factor, bool is_playback) @@ -990,12 +477,11 @@ static void set_ep_max_packet_size(const struct f_uac2_opts *uac2_opts, static int afunc_bind(struct usb_configuration *cfg, struct usb_function *fn) { - struct audio_dev *agdev = func_to_agdev(fn); - struct snd_uac2_chip *uac2 = &agdev->uac2; + struct f_uac2 *uac2 = func_to_uac2(fn); + struct g_audio *agdev = func_to_g_audio(fn); struct usb_composite_dev *cdev = cfg->cdev; struct usb_gadget *gadget = cdev->gadget; - struct device *dev = &uac2->pdev.dev; - struct uac2_rtd_params *prm; + struct device *dev = &gadget->dev; struct f_uac2_opts *uac2_opts; struct usb_string *us; int ret; @@ -1042,8 +528,8 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn) return ret; } std_ac_if_desc.bInterfaceNumber = ret; - agdev->ac_intf = ret; - agdev->ac_alt = 0; + uac2->ac_intf = ret; + uac2->ac_alt = 0; ret = usb_interface_id(cfg, fn); if (ret < 0) { @@ -1052,8 +538,8 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn) } std_as_out_if0_desc.bInterfaceNumber = ret; std_as_out_if1_desc.bInterfaceNumber = ret; - agdev->as_out_intf = ret; - agdev->as_out_alt = 0; + uac2->as_out_intf = ret; + uac2->as_out_alt = 0; ret = usb_interface_id(cfg, fn); if (ret < 0) { @@ -1062,8 +548,14 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn) } std_as_in_if0_desc.bInterfaceNumber = ret; std_as_in_if1_desc.bInterfaceNumber = ret; - agdev->as_in_intf = ret; - agdev->as_in_alt = 0; + uac2->as_in_intf = ret; + uac2->as_in_alt = 0; + + /* Calculate wMaxPacketSize according to audio bandwidth */ + set_ep_max_packet_size(uac2_opts, &fs_epin_desc, 1000, true); + set_ep_max_packet_size(uac2_opts, &fs_epout_desc, 1000, false); + set_ep_max_packet_size(uac2_opts, &hs_epin_desc, 8000, true); + set_ep_max_packet_size(uac2_opts, &hs_epout_desc, 8000, false); agdev->out_ep = usb_ep_autoconfig(gadget, &fs_epout_desc); if (!agdev->out_ep) { @@ -1077,14 +569,10 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn) return ret; } - uac2->p_prm.uac2 = uac2; - uac2->c_prm.uac2 = uac2; - - /* Calculate wMaxPacketSize according to audio bandwidth */ - set_ep_max_packet_size(uac2_opts, &fs_epin_desc, 1000, true); - set_ep_max_packet_size(uac2_opts, &fs_epout_desc, 1000, false); - set_ep_max_packet_size(uac2_opts, &hs_epin_desc, 8000, true); - set_ep_max_packet_size(uac2_opts, &hs_epout_desc, 8000, false); + agdev->in_ep_maxpsize = max(fs_epin_desc.wMaxPacketSize, + hs_epin_desc.wMaxPacketSize); + agdev->out_ep_maxpsize = max(fs_epout_desc.wMaxPacketSize, + hs_epout_desc.wMaxPacketSize); hs_epout_desc.bEndpointAddress = fs_epout_desc.bEndpointAddress; hs_epin_desc.bEndpointAddress = fs_epin_desc.bEndpointAddress; @@ -1094,48 +582,23 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn) if (ret) return ret; - prm = &agdev->uac2.c_prm; - prm->max_psize = hs_epout_desc.wMaxPacketSize; - prm->ureq = kcalloc(uac2_opts->req_number, sizeof(struct uac2_req), - GFP_KERNEL); - if (!prm->ureq) { - ret = -ENOMEM; - goto err_free_descs; - } - prm->rbuf = kcalloc(uac2_opts->req_number, prm->max_psize, GFP_KERNEL); - if (!prm->rbuf) { - prm->max_psize = 0; - ret = -ENOMEM; - goto err_free_descs; - } - - prm = &agdev->uac2.p_prm; - prm->max_psize = hs_epin_desc.wMaxPacketSize; - prm->ureq = kcalloc(uac2_opts->req_number, sizeof(struct uac2_req), - GFP_KERNEL); - if (!prm->ureq) { - ret = -ENOMEM; - goto err_free_descs; - } - prm->rbuf = kcalloc(uac2_opts->req_number, prm->max_psize, GFP_KERNEL); - if (!prm->rbuf) { - prm->max_psize = 0; - ret = -ENOMEM; - goto err_no_memory; - } + agdev->gadget = gadget; - ret = alsa_uac2_init(agdev); + agdev->params.p_chmask = uac2_opts->p_chmask; + agdev->params.p_srate = uac2_opts->p_srate; + agdev->params.p_ssize = uac2_opts->p_ssize; + agdev->params.c_chmask = uac2_opts->c_chmask; + agdev->params.c_srate = uac2_opts->c_srate; + agdev->params.c_ssize = uac2_opts->c_ssize; + agdev->params.req_number = uac2_opts->req_number; + ret = g_audio_setup(agdev, "UAC2 PCM", "UAC2_Gadget"); if (ret) - goto err_no_memory; + goto err_free_descs; return 0; -err_no_memory: - kfree(agdev->uac2.p_prm.ureq); - kfree(agdev->uac2.c_prm.ureq); - kfree(agdev->uac2.p_prm.rbuf); - kfree(agdev->uac2.c_prm.rbuf); err_free_descs: usb_free_all_descriptors(fn); + agdev->gadget = NULL; return ret; } @@ -1143,15 +606,10 @@ static int afunc_set_alt(struct usb_function *fn, unsigned intf, unsigned alt) { struct usb_composite_dev *cdev = fn->config->cdev; - struct audio_dev *agdev = func_to_agdev(fn); - struct f_uac2_opts *opts = agdev_to_uac2_opts(agdev); - struct snd_uac2_chip *uac2 = &agdev->uac2; + struct f_uac2 *uac2 = func_to_uac2(fn); struct usb_gadget *gadget = cdev->gadget; - struct device *dev = &uac2->pdev.dev; - struct usb_request *req; - struct usb_ep *ep; - struct uac2_rtd_params *prm; - int req_len, i; + struct device *dev = &gadget->dev; + int ret = 0; /* No i/f has more than 2 alt settings */ if (alt > 1) { @@ -1159,7 +617,7 @@ afunc_set_alt(struct usb_function *fn, unsigned intf, unsigned alt) return -EINVAL; } - if (intf == agdev->ac_intf) { + if (intf == uac2->ac_intf) { /* Control I/f has only 1 AltSetting - 0 */ if (alt) { dev_err(dev, "%s:%d Error!\n", __func__, __LINE__); @@ -1168,95 +626,42 @@ afunc_set_alt(struct usb_function *fn, unsigned intf, unsigned alt) return 0; } - if (intf == agdev->as_out_intf) { - ep = agdev->out_ep; - prm = &uac2->c_prm; - config_ep_by_speed(gadget, fn, ep); - agdev->as_out_alt = alt; - req_len = prm->max_psize; - } else if (intf == agdev->as_in_intf) { - unsigned int factor, rate; - struct usb_endpoint_descriptor *ep_desc; - - ep = agdev->in_ep; - prm = &uac2->p_prm; - config_ep_by_speed(gadget, fn, ep); - agdev->as_in_alt = alt; - - /* pre-calculate the playback endpoint's interval */ - if (gadget->speed == USB_SPEED_FULL) { - ep_desc = &fs_epin_desc; - factor = 1000; - } else { - ep_desc = &hs_epin_desc; - factor = 8000; - } - - /* pre-compute some values for iso_complete() */ - uac2->p_framesize = opts->p_ssize * - num_channels(opts->p_chmask); - rate = opts->p_srate * uac2->p_framesize; - uac2->p_interval = factor / (1 << (ep_desc->bInterval - 1)); - uac2->p_pktsize = min_t(unsigned int, rate / uac2->p_interval, - prm->max_psize); + if (intf == uac2->as_out_intf) { + uac2->as_out_alt = alt; - if (uac2->p_pktsize < prm->max_psize) - uac2->p_pktsize_residue = rate % uac2->p_interval; + if (alt) + ret = u_audio_start_capture(&uac2->g_audio); else - uac2->p_pktsize_residue = 0; + u_audio_stop_capture(&uac2->g_audio); + } else if (intf == uac2->as_in_intf) { + uac2->as_in_alt = alt; - req_len = uac2->p_pktsize; - uac2->p_residue = 0; + if (alt) + ret = u_audio_start_playback(&uac2->g_audio); + else + u_audio_stop_playback(&uac2->g_audio); } else { dev_err(dev, "%s:%d Error!\n", __func__, __LINE__); return -EINVAL; } - if (alt == 0) { - free_ep(prm, ep); - return 0; - } - - prm->ep_enabled = true; - usb_ep_enable(ep); - - for (i = 0; i < opts->req_number; i++) { - if (!prm->ureq[i].req) { - req = usb_ep_alloc_request(ep, GFP_ATOMIC); - if (req == NULL) - return -ENOMEM; - - prm->ureq[i].req = req; - prm->ureq[i].pp = prm; - - req->zero = 0; - req->context = &prm->ureq[i]; - req->length = req_len; - req->complete = agdev_iso_complete; - req->buf = prm->rbuf + i * prm->max_psize; - } - - if (usb_ep_queue(ep, prm->ureq[i].req, GFP_ATOMIC)) - dev_err(dev, "%s:%d Error!\n", __func__, __LINE__); - } - - return 0; + return ret; } static int afunc_get_alt(struct usb_function *fn, unsigned intf) { - struct audio_dev *agdev = func_to_agdev(fn); - struct snd_uac2_chip *uac2 = &agdev->uac2; - - if (intf == agdev->ac_intf) - return agdev->ac_alt; - else if (intf == agdev->as_out_intf) - return agdev->as_out_alt; - else if (intf == agdev->as_in_intf) - return agdev->as_in_alt; + struct f_uac2 *uac2 = func_to_uac2(fn); + struct g_audio *agdev = func_to_g_audio(fn); + + if (intf == uac2->ac_intf) + return uac2->ac_alt; + else if (intf == uac2->as_out_intf) + return uac2->as_out_alt; + else if (intf == uac2->as_in_intf) + return uac2->as_in_alt; else - dev_err(&uac2->pdev.dev, + dev_err(&agdev->gadget->dev, "%s:%d Invalid Interface %d!\n", __func__, __LINE__, intf); @@ -1266,22 +671,19 @@ afunc_get_alt(struct usb_function *fn, unsigned intf) static void afunc_disable(struct usb_function *fn) { - struct audio_dev *agdev = func_to_agdev(fn); - struct snd_uac2_chip *uac2 = &agdev->uac2; - - free_ep(&uac2->p_prm, agdev->in_ep); - agdev->as_in_alt = 0; + struct f_uac2 *uac2 = func_to_uac2(fn); - free_ep(&uac2->c_prm, agdev->out_ep); - agdev->as_out_alt = 0; + uac2->as_in_alt = 0; + uac2->as_out_alt = 0; + u_audio_stop_capture(&uac2->g_audio); + u_audio_stop_playback(&uac2->g_audio); } static int in_rq_cur(struct usb_function *fn, const struct usb_ctrlrequest *cr) { struct usb_request *req = fn->config->cdev->req; - struct audio_dev *agdev = func_to_agdev(fn); - struct snd_uac2_chip *uac2 = &agdev->uac2; + struct g_audio *agdev = func_to_g_audio(fn); struct f_uac2_opts *opts; u16 w_length = le16_to_cpu(cr->wLength); u16 w_index = le16_to_cpu(cr->wIndex); @@ -1291,7 +693,7 @@ in_rq_cur(struct usb_function *fn, const struct usb_ctrlrequest *cr) int value = -EOPNOTSUPP; int p_srate, c_srate; - opts = agdev_to_uac2_opts(agdev); + opts = g_audio_to_uac2_opts(agdev); p_srate = opts->p_srate; c_srate = opts->c_srate; @@ -1310,7 +712,7 @@ in_rq_cur(struct usb_function *fn, const struct usb_ctrlrequest *cr) *(u8 *)req->buf = 1; value = min_t(unsigned, w_length, 1); } else { - dev_err(&uac2->pdev.dev, + dev_err(&agdev->gadget->dev, "%s:%d control_selector=%d TODO!\n", __func__, __LINE__, control_selector); } @@ -1322,8 +724,7 @@ static int in_rq_range(struct usb_function *fn, const struct usb_ctrlrequest *cr) { struct usb_request *req = fn->config->cdev->req; - struct audio_dev *agdev = func_to_agdev(fn); - struct snd_uac2_chip *uac2 = &agdev->uac2; + struct g_audio *agdev = func_to_g_audio(fn); struct f_uac2_opts *opts; u16 w_length = le16_to_cpu(cr->wLength); u16 w_index = le16_to_cpu(cr->wIndex); @@ -1334,7 +735,7 @@ in_rq_range(struct usb_function *fn, const struct usb_ctrlrequest *cr) int value = -EOPNOTSUPP; int p_srate, c_srate; - opts = agdev_to_uac2_opts(agdev); + opts = g_audio_to_uac2_opts(agdev); p_srate = opts->p_srate; c_srate = opts->c_srate; @@ -1353,7 +754,7 @@ in_rq_range(struct usb_function *fn, const struct usb_ctrlrequest *cr) value = min_t(unsigned, w_length, sizeof r); memcpy(req->buf, &r, value); } else { - dev_err(&uac2->pdev.dev, + dev_err(&agdev->gadget->dev, "%s:%d control_selector=%d TODO!\n", __func__, __LINE__, control_selector); } @@ -1388,13 +789,13 @@ out_rq_cur(struct usb_function *fn, const struct usb_ctrlrequest *cr) static int setup_rq_inf(struct usb_function *fn, const struct usb_ctrlrequest *cr) { - struct audio_dev *agdev = func_to_agdev(fn); - struct snd_uac2_chip *uac2 = &agdev->uac2; + struct f_uac2 *uac2 = func_to_uac2(fn); + struct g_audio *agdev = func_to_g_audio(fn); u16 w_index = le16_to_cpu(cr->wIndex); u8 intf = w_index & 0xff; - if (intf != agdev->ac_intf) { - dev_err(&uac2->pdev.dev, + if (intf != uac2->ac_intf) { + dev_err(&agdev->gadget->dev, "%s:%d Error!\n", __func__, __LINE__); return -EOPNOTSUPP; } @@ -1411,8 +812,7 @@ static int afunc_setup(struct usb_function *fn, const struct usb_ctrlrequest *cr) { struct usb_composite_dev *cdev = fn->config->cdev; - struct audio_dev *agdev = func_to_agdev(fn); - struct snd_uac2_chip *uac2 = &agdev->uac2; + struct g_audio *agdev = func_to_g_audio(fn); struct usb_request *req = cdev->req; u16 w_length = le16_to_cpu(cr->wLength); int value = -EOPNOTSUPP; @@ -1424,14 +824,15 @@ afunc_setup(struct usb_function *fn, const struct usb_ctrlrequest *cr) if ((cr->bRequestType & USB_RECIP_MASK) == USB_RECIP_INTERFACE) value = setup_rq_inf(fn, cr); else - dev_err(&uac2->pdev.dev, "%s:%d Error!\n", __func__, __LINE__); + dev_err(&agdev->gadget->dev, "%s:%d Error!\n", + __func__, __LINE__); if (value >= 0) { req->length = value; req->zero = value < w_length; value = usb_ep_queue(cdev->gadget->ep0, req, GFP_ATOMIC); if (value < 0) { - dev_err(&uac2->pdev.dev, + dev_err(&agdev->gadget->dev, "%s:%d Error!\n", __func__, __LINE__); req->status = 0; } @@ -1557,10 +958,10 @@ static struct usb_function_instance *afunc_alloc_inst(void) static void afunc_free(struct usb_function *f) { - struct audio_dev *agdev; + struct g_audio *agdev; struct f_uac2_opts *opts; - agdev = func_to_agdev(f); + agdev = func_to_g_audio(f); opts = container_of(f->fi, struct f_uac2_opts, func_inst); kfree(agdev); mutex_lock(&opts->lock); @@ -1570,27 +971,21 @@ static void afunc_free(struct usb_function *f) static void afunc_unbind(struct usb_configuration *c, struct usb_function *f) { - struct audio_dev *agdev = func_to_agdev(f); - struct uac2_rtd_params *prm; + struct g_audio *agdev = func_to_g_audio(f); - alsa_uac2_exit(agdev); - - prm = &agdev->uac2.p_prm; - kfree(prm->rbuf); - - prm = &agdev->uac2.c_prm; - kfree(prm->rbuf); - kfree(prm->ureq); + g_audio_cleanup(agdev); usb_free_all_descriptors(f); + + agdev->gadget = NULL; } static struct usb_function *afunc_alloc(struct usb_function_instance *fi) { - struct audio_dev *agdev; + struct f_uac2 *uac2; struct f_uac2_opts *opts; - agdev = kzalloc(sizeof(*agdev), GFP_KERNEL); - if (agdev == NULL) + uac2 = kzalloc(sizeof(*uac2), GFP_KERNEL); + if (uac2 == NULL) return ERR_PTR(-ENOMEM); opts = container_of(fi, struct f_uac2_opts, func_inst); @@ -1598,16 +993,16 @@ static struct usb_function *afunc_alloc(struct usb_function_instance *fi) ++opts->refcnt; mutex_unlock(&opts->lock); - agdev->func.name = "uac2_func"; - agdev->func.bind = afunc_bind; - agdev->func.unbind = afunc_unbind; - agdev->func.set_alt = afunc_set_alt; - agdev->func.get_alt = afunc_get_alt; - agdev->func.disable = afunc_disable; - agdev->func.setup = afunc_setup; - agdev->func.free_func = afunc_free; + uac2->g_audio.func.name = "uac2_func"; + uac2->g_audio.func.bind = afunc_bind; + uac2->g_audio.func.unbind = afunc_unbind; + uac2->g_audio.func.set_alt = afunc_set_alt; + uac2->g_audio.func.get_alt = afunc_get_alt; + uac2->g_audio.func.disable = afunc_disable; + uac2->g_audio.func.setup = afunc_setup; + uac2->g_audio.func.free_func = afunc_free; - return &agdev->func; + return &uac2->g_audio.func; } DECLARE_USB_FUNCTION_INIT(uac2, afunc_alloc_inst, afunc_alloc); diff --git a/drivers/usb/gadget/function/storage_common.h b/drivers/usb/gadget/function/storage_common.h index e698489..e0814a9 100644 --- a/drivers/usb/gadget/function/storage_common.h +++ b/drivers/usb/gadget/function/storage_common.h @@ -133,9 +133,10 @@ static inline bool fsg_lun_is_open(struct fsg_lun *curlun) #define FSG_MAX_LUNS 16 enum fsg_buffer_state { + BUF_STATE_SENDING = -2, + BUF_STATE_RECEIVING, BUF_STATE_EMPTY = 0, - BUF_STATE_FULL, - BUF_STATE_BUSY + BUF_STATE_FULL }; struct fsg_buffhd { @@ -151,23 +152,14 @@ struct fsg_buffhd { unsigned int bulk_out_intended_length; struct usb_request *inreq; - int inreq_busy; struct usb_request *outreq; - int outreq_busy; }; enum fsg_state { - /* This one isn't used anywhere */ - FSG_STATE_COMMAND_PHASE = -10, - FSG_STATE_DATA_PHASE, - FSG_STATE_STATUS_PHASE, - - FSG_STATE_IDLE = 0, + FSG_STATE_NORMAL, FSG_STATE_ABORT_BULK_OUT, - FSG_STATE_RESET, - FSG_STATE_INTERFACE_CHANGE, + FSG_STATE_PROTOCOL_RESET, FSG_STATE_CONFIG_CHANGE, - FSG_STATE_DISCONNECT, FSG_STATE_EXIT, FSG_STATE_TERMINATED }; diff --git a/drivers/usb/gadget/function/u_audio.c b/drivers/usb/gadget/function/u_audio.c new file mode 100644 index 0000000..5dd73b9 --- /dev/null +++ b/drivers/usb/gadget/function/u_audio.c @@ -0,0 +1,662 @@ +/* + * u_audio.c -- interface to USB gadget "ALSA sound card" utilities + * + * Copyright (C) 2016 + * Author: Ruslan Bilovol <ruslan.bilovol@gmail.com> + * + * Sound card implementation was cut-and-pasted with changes + * from f_uac2.c and has: + * Copyright (C) 2011 + * Yadwinder Singh (yadi.brar01@gmail.com) + * Jaswinder Singh (jaswinder.singh@linaro.org) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/module.h> +#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> + +#include "u_audio.h" + +#define BUFF_SIZE_MAX (PAGE_SIZE * 16) +#define PRD_SIZE_MAX PAGE_SIZE +#define MIN_PERIODS 4 + +struct uac_req { + struct uac_rtd_params *pp; /* parent param */ + struct usb_request *req; +}; + +/* Runtime data params for one stream */ +struct uac_rtd_params { + struct snd_uac_chip *uac; /* parent chip */ + bool ep_enabled; /* if the ep is enabled */ + /* Size of the ring buffer */ + size_t dma_bytes; + unsigned char *dma_area; + + struct snd_pcm_substream *ss; + + /* Ring buffer */ + ssize_t hw_ptr; + + void *rbuf; + + size_t period_size; + + unsigned max_psize; /* MaxPacketSize of endpoint */ + struct uac_req *ureq; + + spinlock_t lock; +}; + +struct snd_uac_chip { + struct g_audio *audio_dev; + + struct uac_rtd_params p_prm; + struct uac_rtd_params c_prm; + + struct snd_card *card; + struct snd_pcm *pcm; + + /* timekeeping for the playback endpoint */ + unsigned int p_interval; + unsigned int p_residue; + + /* pre-calculated values for playback iso completion */ + unsigned int p_pktsize; + unsigned int p_pktsize_residue; + unsigned int p_framesize; +}; + +static struct snd_pcm_hardware uac_pcm_hardware = { + .info = SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER + | SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID + | SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME, + .rates = SNDRV_PCM_RATE_CONTINUOUS, + .periods_max = BUFF_SIZE_MAX / PRD_SIZE_MAX, + .buffer_bytes_max = BUFF_SIZE_MAX, + .period_bytes_max = PRD_SIZE_MAX, + .periods_min = MIN_PERIODS, +}; + +static void u_audio_iso_complete(struct usb_ep *ep, struct usb_request *req) +{ + unsigned pending; + unsigned long flags; + unsigned int hw_ptr; + bool update_alsa = false; + int status = req->status; + struct uac_req *ur = req->context; + struct snd_pcm_substream *substream; + struct uac_rtd_params *prm = ur->pp; + struct snd_uac_chip *uac = prm->uac; + + /* i/f shutting down */ + if (!prm->ep_enabled || req->status == -ESHUTDOWN) + return; + + /* + * We can't really do much about bad xfers. + * Afterall, the ISOCH xfers could fail legitimately. + */ + if (status) + pr_debug("%s: iso_complete status(%d) %d/%d\n", + __func__, status, req->actual, req->length); + + substream = prm->ss; + + /* Do nothing if ALSA isn't active */ + if (!substream) + goto exit; + + spin_lock_irqsave(&prm->lock, flags); + + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { + /* + * For each IN packet, take the quotient of the current data + * rate and the endpoint's interval as the base packet size. + * If there is a residue from this division, add it to the + * residue accumulator. + */ + req->length = uac->p_pktsize; + uac->p_residue += uac->p_pktsize_residue; + + /* + * Whenever there are more bytes in the accumulator than we + * need to add one more sample frame, increase this packet's + * size and decrease the accumulator. + */ + if (uac->p_residue / uac->p_interval >= uac->p_framesize) { + req->length += uac->p_framesize; + uac->p_residue -= uac->p_framesize * + uac->p_interval; + } + + req->actual = req->length; + } + + pending = prm->hw_ptr % prm->period_size; + pending += req->actual; + if (pending >= prm->period_size) + update_alsa = true; + + hw_ptr = prm->hw_ptr; + prm->hw_ptr = (prm->hw_ptr + req->actual) % prm->dma_bytes; + + spin_unlock_irqrestore(&prm->lock, flags); + + /* Pack USB load in ALSA ring buffer */ + pending = prm->dma_bytes - hw_ptr; + + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { + if (unlikely(pending < req->actual)) { + memcpy(req->buf, prm->dma_area + hw_ptr, pending); + memcpy(req->buf + pending, prm->dma_area, + req->actual - pending); + } else { + memcpy(req->buf, prm->dma_area + hw_ptr, req->actual); + } + } else { + if (unlikely(pending < req->actual)) { + memcpy(prm->dma_area + hw_ptr, req->buf, pending); + memcpy(prm->dma_area, req->buf + pending, + req->actual - pending); + } else { + memcpy(prm->dma_area + hw_ptr, req->buf, req->actual); + } + } + +exit: + if (usb_ep_queue(ep, req, GFP_ATOMIC)) + dev_err(uac->card->dev, "%d Error!\n", __LINE__); + + if (update_alsa) + snd_pcm_period_elapsed(substream); +} + +static int uac_pcm_trigger(struct snd_pcm_substream *substream, int cmd) +{ + struct snd_uac_chip *uac = snd_pcm_substream_chip(substream); + struct uac_rtd_params *prm; + struct g_audio *audio_dev; + struct uac_params *params; + unsigned long flags; + int err = 0; + + audio_dev = uac->audio_dev; + params = &audio_dev->params; + + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + prm = &uac->p_prm; + else + prm = &uac->c_prm; + + spin_lock_irqsave(&prm->lock, flags); + + /* Reset */ + prm->hw_ptr = 0; + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + case SNDRV_PCM_TRIGGER_RESUME: + prm->ss = substream; + break; + case SNDRV_PCM_TRIGGER_STOP: + case SNDRV_PCM_TRIGGER_SUSPEND: + prm->ss = NULL; + break; + default: + err = -EINVAL; + } + + spin_unlock_irqrestore(&prm->lock, flags); + + /* Clear buffer after Play stops */ + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && !prm->ss) + memset(prm->rbuf, 0, prm->max_psize * params->req_number); + + return err; +} + +static snd_pcm_uframes_t uac_pcm_pointer(struct snd_pcm_substream *substream) +{ + struct snd_uac_chip *uac = snd_pcm_substream_chip(substream); + struct uac_rtd_params *prm; + + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + prm = &uac->p_prm; + else + prm = &uac->c_prm; + + return bytes_to_frames(substream->runtime, prm->hw_ptr); +} + +static int uac_pcm_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *hw_params) +{ + struct snd_uac_chip *uac = snd_pcm_substream_chip(substream); + struct uac_rtd_params *prm; + int err; + + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + prm = &uac->p_prm; + else + prm = &uac->c_prm; + + err = snd_pcm_lib_malloc_pages(substream, + params_buffer_bytes(hw_params)); + if (err >= 0) { + prm->dma_bytes = substream->runtime->dma_bytes; + prm->dma_area = substream->runtime->dma_area; + prm->period_size = params_period_bytes(hw_params); + } + + return err; +} + +static int uac_pcm_hw_free(struct snd_pcm_substream *substream) +{ + struct snd_uac_chip *uac = snd_pcm_substream_chip(substream); + struct uac_rtd_params *prm; + + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + prm = &uac->p_prm; + else + prm = &uac->c_prm; + + prm->dma_area = NULL; + prm->dma_bytes = 0; + prm->period_size = 0; + + return snd_pcm_lib_free_pages(substream); +} + +static int uac_pcm_open(struct snd_pcm_substream *substream) +{ + struct snd_uac_chip *uac = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + struct g_audio *audio_dev; + struct uac_params *params; + int p_ssize, c_ssize; + int p_srate, c_srate; + int p_chmask, c_chmask; + + audio_dev = uac->audio_dev; + params = &audio_dev->params; + p_ssize = params->p_ssize; + c_ssize = params->c_ssize; + p_srate = params->p_srate; + c_srate = params->c_srate; + p_chmask = params->p_chmask; + c_chmask = params->c_chmask; + uac->p_residue = 0; + + runtime->hw = uac_pcm_hardware; + + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { + spin_lock_init(&uac->p_prm.lock); + runtime->hw.rate_min = p_srate; + switch (p_ssize) { + case 3: + runtime->hw.formats = SNDRV_PCM_FMTBIT_S24_3LE; + break; + case 4: + runtime->hw.formats = SNDRV_PCM_FMTBIT_S32_LE; + break; + default: + runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE; + break; + } + runtime->hw.channels_min = num_channels(p_chmask); + runtime->hw.period_bytes_min = 2 * uac->p_prm.max_psize + / runtime->hw.periods_min; + } else { + spin_lock_init(&uac->c_prm.lock); + runtime->hw.rate_min = c_srate; + switch (c_ssize) { + case 3: + runtime->hw.formats = SNDRV_PCM_FMTBIT_S24_3LE; + break; + case 4: + runtime->hw.formats = SNDRV_PCM_FMTBIT_S32_LE; + break; + default: + runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE; + break; + } + runtime->hw.channels_min = num_channels(c_chmask); + runtime->hw.period_bytes_min = 2 * uac->c_prm.max_psize + / runtime->hw.periods_min; + } + + runtime->hw.rate_max = runtime->hw.rate_min; + runtime->hw.channels_max = runtime->hw.channels_min; + + snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); + + return 0; +} + +/* ALSA cries without these function pointers */ +static int uac_pcm_null(struct snd_pcm_substream *substream) +{ + return 0; +} + +static struct snd_pcm_ops uac_pcm_ops = { + .open = uac_pcm_open, + .close = uac_pcm_null, + .ioctl = snd_pcm_lib_ioctl, + .hw_params = uac_pcm_hw_params, + .hw_free = uac_pcm_hw_free, + .trigger = uac_pcm_trigger, + .pointer = uac_pcm_pointer, + .prepare = uac_pcm_null, +}; + +static inline void free_ep(struct uac_rtd_params *prm, struct usb_ep *ep) +{ + struct snd_uac_chip *uac = prm->uac; + struct g_audio *audio_dev; + struct uac_params *params; + int i; + + if (!prm->ep_enabled) + return; + + prm->ep_enabled = false; + + audio_dev = uac->audio_dev; + params = &audio_dev->params; + + for (i = 0; i < params->req_number; i++) { + if (prm->ureq[i].req) { + usb_ep_dequeue(ep, prm->ureq[i].req); + usb_ep_free_request(ep, prm->ureq[i].req); + prm->ureq[i].req = NULL; + } + } + + if (usb_ep_disable(ep)) + dev_err(uac->card->dev, "%s:%d Error!\n", __func__, __LINE__); +} + + +int u_audio_start_capture(struct g_audio *audio_dev) +{ + struct snd_uac_chip *uac = audio_dev->uac; + struct usb_gadget *gadget = audio_dev->gadget; + struct device *dev = &gadget->dev; + struct usb_request *req; + struct usb_ep *ep; + struct uac_rtd_params *prm; + struct uac_params *params = &audio_dev->params; + int req_len, i; + + ep = audio_dev->out_ep; + prm = &uac->c_prm; + config_ep_by_speed(gadget, &audio_dev->func, ep); + req_len = prm->max_psize; + + prm->ep_enabled = true; + usb_ep_enable(ep); + + for (i = 0; i < params->req_number; i++) { + if (!prm->ureq[i].req) { + req = usb_ep_alloc_request(ep, GFP_ATOMIC); + if (req == NULL) + return -ENOMEM; + + prm->ureq[i].req = req; + prm->ureq[i].pp = prm; + + req->zero = 0; + req->context = &prm->ureq[i]; + req->length = req_len; + req->complete = u_audio_iso_complete; + req->buf = prm->rbuf + i * prm->max_psize; + } + + if (usb_ep_queue(ep, prm->ureq[i].req, GFP_ATOMIC)) + dev_err(dev, "%s:%d Error!\n", __func__, __LINE__); + } + + return 0; +} +EXPORT_SYMBOL_GPL(u_audio_start_capture); + +void u_audio_stop_capture(struct g_audio *audio_dev) +{ + struct snd_uac_chip *uac = audio_dev->uac; + + free_ep(&uac->c_prm, audio_dev->out_ep); +} +EXPORT_SYMBOL_GPL(u_audio_stop_capture); + +int u_audio_start_playback(struct g_audio *audio_dev) +{ + struct snd_uac_chip *uac = audio_dev->uac; + struct usb_gadget *gadget = audio_dev->gadget; + struct device *dev = &gadget->dev; + struct usb_request *req; + struct usb_ep *ep; + struct uac_rtd_params *prm; + struct uac_params *params = &audio_dev->params; + unsigned int factor, rate; + const struct usb_endpoint_descriptor *ep_desc; + int req_len, i; + + ep = audio_dev->in_ep; + prm = &uac->p_prm; + config_ep_by_speed(gadget, &audio_dev->func, ep); + + ep_desc = ep->desc; + + /* pre-calculate the playback endpoint's interval */ + if (gadget->speed == USB_SPEED_FULL) + factor = 1000; + else + factor = 8000; + + /* pre-compute some values for iso_complete() */ + uac->p_framesize = params->p_ssize * + num_channels(params->p_chmask); + rate = params->p_srate * uac->p_framesize; + uac->p_interval = factor / (1 << (ep_desc->bInterval - 1)); + uac->p_pktsize = min_t(unsigned int, rate / uac->p_interval, + prm->max_psize); + + if (uac->p_pktsize < prm->max_psize) + uac->p_pktsize_residue = rate % uac->p_interval; + else + uac->p_pktsize_residue = 0; + + req_len = uac->p_pktsize; + uac->p_residue = 0; + + prm->ep_enabled = true; + usb_ep_enable(ep); + + for (i = 0; i < params->req_number; i++) { + if (!prm->ureq[i].req) { + req = usb_ep_alloc_request(ep, GFP_ATOMIC); + if (req == NULL) + return -ENOMEM; + + prm->ureq[i].req = req; + prm->ureq[i].pp = prm; + + req->zero = 0; + req->context = &prm->ureq[i]; + req->length = req_len; + req->complete = u_audio_iso_complete; + req->buf = prm->rbuf + i * prm->max_psize; + } + + if (usb_ep_queue(ep, prm->ureq[i].req, GFP_ATOMIC)) + dev_err(dev, "%s:%d Error!\n", __func__, __LINE__); + } + + return 0; +} +EXPORT_SYMBOL_GPL(u_audio_start_playback); + +void u_audio_stop_playback(struct g_audio *audio_dev) +{ + struct snd_uac_chip *uac = audio_dev->uac; + + free_ep(&uac->p_prm, audio_dev->in_ep); +} +EXPORT_SYMBOL_GPL(u_audio_stop_playback); + +int g_audio_setup(struct g_audio *g_audio, const char *pcm_name, + const char *card_name) +{ + struct snd_uac_chip *uac; + struct snd_card *card; + struct snd_pcm *pcm; + struct uac_params *params; + int p_chmask, c_chmask; + int err; + + if (!g_audio) + return -EINVAL; + + uac = kzalloc(sizeof(*uac), GFP_KERNEL); + if (!uac) + return -ENOMEM; + g_audio->uac = uac; + uac->audio_dev = g_audio; + + params = &g_audio->params; + p_chmask = params->p_chmask; + c_chmask = params->c_chmask; + + if (c_chmask) { + struct uac_rtd_params *prm = &uac->c_prm; + + uac->c_prm.uac = uac; + prm->max_psize = g_audio->out_ep_maxpsize; + + prm->ureq = kcalloc(params->req_number, sizeof(struct uac_req), + GFP_KERNEL); + if (!prm->ureq) { + err = -ENOMEM; + goto fail; + } + + prm->rbuf = kcalloc(params->req_number, prm->max_psize, + GFP_KERNEL); + if (!prm->rbuf) { + prm->max_psize = 0; + err = -ENOMEM; + goto fail; + } + } + + if (p_chmask) { + struct uac_rtd_params *prm = &uac->p_prm; + + uac->p_prm.uac = uac; + prm->max_psize = g_audio->in_ep_maxpsize; + + prm->ureq = kcalloc(params->req_number, sizeof(struct uac_req), + GFP_KERNEL); + if (!prm->ureq) { + err = -ENOMEM; + goto fail; + } + + prm->rbuf = kcalloc(params->req_number, prm->max_psize, + GFP_KERNEL); + if (!prm->rbuf) { + prm->max_psize = 0; + err = -ENOMEM; + goto fail; + } + } + + /* Choose any slot, with no id */ + err = snd_card_new(&g_audio->gadget->dev, + -1, NULL, THIS_MODULE, 0, &card); + if (err < 0) + goto fail; + + uac->card = card; + + /* + * Create first PCM device + * Create a substream only for non-zero channel streams + */ + err = snd_pcm_new(uac->card, pcm_name, 0, + p_chmask ? 1 : 0, c_chmask ? 1 : 0, &pcm); + if (err < 0) + goto snd_fail; + + strcpy(pcm->name, pcm_name); + pcm->private_data = uac; + uac->pcm = pcm; + + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &uac_pcm_ops); + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &uac_pcm_ops); + + strcpy(card->driver, card_name); + strcpy(card->shortname, card_name); + sprintf(card->longname, "%s %i", card_name, card->dev->id); + + snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS, + snd_dma_continuous_data(GFP_KERNEL), 0, BUFF_SIZE_MAX); + + err = snd_card_register(card); + + if (!err) + return 0; + +snd_fail: + snd_card_free(card); +fail: + kfree(uac->p_prm.ureq); + kfree(uac->c_prm.ureq); + kfree(uac->p_prm.rbuf); + kfree(uac->c_prm.rbuf); + kfree(uac); + + return err; +} +EXPORT_SYMBOL_GPL(g_audio_setup); + +void g_audio_cleanup(struct g_audio *g_audio) +{ + struct snd_uac_chip *uac; + struct snd_card *card; + + if (!g_audio || !g_audio->uac) + return; + + uac = g_audio->uac; + card = uac->card; + if (card) + snd_card_free(card); + + kfree(uac->p_prm.ureq); + kfree(uac->c_prm.ureq); + kfree(uac->p_prm.rbuf); + kfree(uac->c_prm.rbuf); + kfree(uac); +} +EXPORT_SYMBOL_GPL(g_audio_cleanup); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("USB gadget \"ALSA sound card\" utilities"); +MODULE_AUTHOR("Ruslan Bilovol"); diff --git a/drivers/usb/gadget/function/u_audio.h b/drivers/usb/gadget/function/u_audio.h new file mode 100644 index 0000000..07e1378 --- /dev/null +++ b/drivers/usb/gadget/function/u_audio.h @@ -0,0 +1,95 @@ +/* + * u_audio.h -- interface to USB gadget "ALSA sound card" utilities + * + * Copyright (C) 2016 + * Author: Ruslan Bilovol <ruslan.bilovol@gmail.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef __U_AUDIO_H +#define __U_AUDIO_H + +#include <linux/usb/composite.h> + +struct uac_params { + /* playback */ + int p_chmask; /* channel mask */ + int p_srate; /* rate in Hz */ + int p_ssize; /* sample size */ + + /* capture */ + int c_chmask; /* channel mask */ + int c_srate; /* rate in Hz */ + int c_ssize; /* sample size */ + + int req_number; /* number of preallocated requests */ +}; + +struct g_audio { + struct usb_function func; + struct usb_gadget *gadget; + + struct usb_ep *in_ep; + struct usb_ep *out_ep; + + /* Max packet size for all in_ep possible speeds */ + unsigned int in_ep_maxpsize; + /* Max packet size for all out_ep possible speeds */ + unsigned int out_ep_maxpsize; + + /* The ALSA Sound Card it represents on the USB-Client side */ + struct snd_uac_chip *uac; + + struct uac_params params; +}; + +static inline struct g_audio *func_to_g_audio(struct usb_function *f) +{ + return container_of(f, struct g_audio, func); +} + +static inline uint num_channels(uint chanmask) +{ + uint num = 0; + + while (chanmask) { + num += (chanmask & 1); + chanmask >>= 1; + } + + return num; +} + +/* + * g_audio_setup - initialize one virtual ALSA sound card + * @g_audio: struct with filled params, in_ep_maxpsize, out_ep_maxpsize + * @pcm_name: the id string for a PCM instance of this sound card + * @card_name: name of this soundcard + * + * This sets up the single virtual ALSA sound card that may be exported by a + * gadget driver using this framework. + * + * Context: may sleep + * + * Returns zero on success, or a negative error on failure. + */ +int g_audio_setup(struct g_audio *g_audio, const char *pcm_name, + const char *card_name); +void g_audio_cleanup(struct g_audio *g_audio); + +int u_audio_start_capture(struct g_audio *g_audio); +void u_audio_stop_capture(struct g_audio *g_audio); +int u_audio_start_playback(struct g_audio *g_audio); +void u_audio_stop_playback(struct g_audio *g_audio); + +#endif /* __U_AUDIO_H */ diff --git a/drivers/usb/gadget/function/u_fs.h b/drivers/usb/gadget/function/u_fs.h index 4378cc2..540f1c4 100644 --- a/drivers/usb/gadget/function/u_fs.h +++ b/drivers/usb/gadget/function/u_fs.h @@ -216,6 +216,9 @@ struct ffs_data { #define FFS_FL_CALL_CLOSED_CALLBACK 0 #define FFS_FL_BOUND 1 + /* For waking up blocked threads when function is enabled. */ + wait_queue_head_t wait; + /* Active function */ struct ffs_function *func; diff --git a/drivers/usb/gadget/function/u_uac1.h b/drivers/usb/gadget/function/u_uac1.h index 5c2ac8e..6f188fd 100644 --- a/drivers/usb/gadget/function/u_uac1.h +++ b/drivers/usb/gadget/function/u_uac1.h @@ -1,82 +1,41 @@ /* - * u_uac1.h -- interface to USB gadget "ALSA AUDIO" utilities + * u_uac1.h - Utility definitions for UAC1 function * - * Copyright (C) 2008 Bryan Wu <cooloney@kernel.org> - * Copyright (C) 2008 Analog Devices, Inc + * Copyright (C) 2016 Ruslan Bilovol <ruslan.bilovol@gmail.com> * - * Enter bugs at http://blackfin.uclinux.org/ - * - * Licensed under the GPL-2 or later. + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. */ -#ifndef __U_AUDIO_H -#define __U_AUDIO_H +#ifndef __U_UAC1_H +#define __U_UAC1_H -#include <linux/device.h> -#include <linux/err.h> -#include <linux/usb/audio.h> #include <linux/usb/composite.h> -#include <sound/core.h> -#include <sound/pcm.h> -#include <sound/pcm_params.h> - -#define FILE_PCM_PLAYBACK "/dev/snd/pcmC0D0p" -#define FILE_PCM_CAPTURE "/dev/snd/pcmC0D0c" -#define FILE_CONTROL "/dev/snd/controlC0" - #define UAC1_OUT_EP_MAX_PACKET_SIZE 200 -#define UAC1_REQ_COUNT 256 -#define UAC1_AUDIO_BUF_SIZE 48000 - -/* - * This represents the USB side of an audio card device, managed by a USB - * function which provides control and stream interfaces. - */ - -struct gaudio_snd_dev { - struct gaudio *card; - struct file *filp; - struct snd_pcm_substream *substream; - int access; - int format; - int channels; - int rate; -}; - -struct gaudio { - struct usb_function func; - struct usb_gadget *gadget; +#define UAC1_DEF_CCHMASK 0x3 +#define UAC1_DEF_CSRATE 48000 +#define UAC1_DEF_CSSIZE 2 +#define UAC1_DEF_PCHMASK 0x3 +#define UAC1_DEF_PSRATE 48000 +#define UAC1_DEF_PSSIZE 2 +#define UAC1_DEF_REQ_NUM 2 - /* ALSA sound device interfaces */ - struct gaudio_snd_dev control; - struct gaudio_snd_dev playback; - struct gaudio_snd_dev capture; - - /* TODO */ -}; struct f_uac1_opts { struct usb_function_instance func_inst; - int req_buf_size; - int req_count; - int audio_buf_size; - char *fn_play; - char *fn_cap; - char *fn_cntl; + int c_chmask; + int c_srate; + int c_ssize; + int p_chmask; + int p_srate; + int p_ssize; + int req_number; unsigned bound:1; - unsigned fn_play_alloc:1; - unsigned fn_cap_alloc:1; - unsigned fn_cntl_alloc:1; + struct mutex lock; int refcnt; }; -int gaudio_setup(struct gaudio *card); -void gaudio_cleanup(struct gaudio *the_card); - -size_t u_audio_playback(struct gaudio *card, void *buf, size_t count); -int u_audio_get_playback_channels(struct gaudio *card); -int u_audio_get_playback_rate(struct gaudio *card); - -#endif /* __U_AUDIO_H */ +#endif /* __U_UAC1_H */ diff --git a/drivers/usb/gadget/function/u_uac1.c b/drivers/usb/gadget/function/u_uac1_legacy.c index c78c841..8aa76b4 100644 --- a/drivers/usb/gadget/function/u_uac1.c +++ b/drivers/usb/gadget/function/u_uac1_legacy.c @@ -18,7 +18,7 @@ #include <linux/random.h> #include <linux/syscalls.h> -#include "u_uac1.h" +#include "u_uac1_legacy.h" /* * This component encapsulates the ALSA devices for USB audio gadget @@ -205,10 +205,11 @@ static int gaudio_open_snd_dev(struct gaudio *card) { struct snd_pcm_file *pcm_file; struct gaudio_snd_dev *snd; - struct f_uac1_opts *opts; + struct f_uac1_legacy_opts *opts; char *fn_play, *fn_cap, *fn_cntl; - opts = container_of(card->func.fi, struct f_uac1_opts, func_inst); + opts = container_of(card->func.fi, struct f_uac1_legacy_opts, + func_inst); fn_play = opts->fn_play; fn_cap = opts->fn_cap; fn_cntl = opts->fn_cntl; diff --git a/drivers/usb/gadget/function/u_uac1_legacy.h b/drivers/usb/gadget/function/u_uac1_legacy.h new file mode 100644 index 0000000..d715b1a --- /dev/null +++ b/drivers/usb/gadget/function/u_uac1_legacy.h @@ -0,0 +1,82 @@ +/* + * u_uac1.h -- interface to USB gadget "ALSA AUDIO" utilities + * + * Copyright (C) 2008 Bryan Wu <cooloney@kernel.org> + * Copyright (C) 2008 Analog Devices, Inc + * + * Enter bugs at http://blackfin.uclinux.org/ + * + * Licensed under the GPL-2 or later. + */ + +#ifndef __U_UAC1_LEGACY_H +#define __U_UAC1_LEGACY_H + +#include <linux/device.h> +#include <linux/err.h> +#include <linux/usb/audio.h> +#include <linux/usb/composite.h> + +#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> + +#define FILE_PCM_PLAYBACK "/dev/snd/pcmC0D0p" +#define FILE_PCM_CAPTURE "/dev/snd/pcmC0D0c" +#define FILE_CONTROL "/dev/snd/controlC0" + +#define UAC1_OUT_EP_MAX_PACKET_SIZE 200 +#define UAC1_REQ_COUNT 256 +#define UAC1_AUDIO_BUF_SIZE 48000 + +/* + * This represents the USB side of an audio card device, managed by a USB + * function which provides control and stream interfaces. + */ + +struct gaudio_snd_dev { + struct gaudio *card; + struct file *filp; + struct snd_pcm_substream *substream; + int access; + int format; + int channels; + int rate; +}; + +struct gaudio { + struct usb_function func; + struct usb_gadget *gadget; + + /* ALSA sound device interfaces */ + struct gaudio_snd_dev control; + struct gaudio_snd_dev playback; + struct gaudio_snd_dev capture; + + /* TODO */ +}; + +struct f_uac1_legacy_opts { + struct usb_function_instance func_inst; + int req_buf_size; + int req_count; + int audio_buf_size; + char *fn_play; + char *fn_cap; + char *fn_cntl; + unsigned bound:1; + unsigned fn_play_alloc:1; + unsigned fn_cap_alloc:1; + unsigned fn_cntl_alloc:1; + struct mutex lock; + int refcnt; +}; + +int gaudio_setup(struct gaudio *card); +void gaudio_cleanup(struct gaudio *the_card); + +size_t u_audio_playback(struct gaudio *card, void *buf, size_t count); +int u_audio_get_playback_channels(struct gaudio *card); +int u_audio_get_playback_rate(struct gaudio *card); + +#endif /* __U_UAC1_LEGACY_H */ diff --git a/drivers/usb/gadget/legacy/Kconfig b/drivers/usb/gadget/legacy/Kconfig index 0b36878..a12fb45 100644 --- a/drivers/usb/gadget/legacy/Kconfig +++ b/drivers/usb/gadget/legacy/Kconfig @@ -54,8 +54,10 @@ config USB_AUDIO depends on SND select USB_LIBCOMPOSITE select SND_PCM - select USB_F_UAC1 if GADGET_UAC1 + select USB_F_UAC1 if (GADGET_UAC1 && !GADGET_UAC1_LEGACY) + select USB_F_UAC1_LEGACY if (GADGET_UAC1 && GADGET_UAC1_LEGACY) select USB_F_UAC2 if !GADGET_UAC1 + select USB_U_AUDIO if (USB_F_UAC2 || USB_F_UAC1) help This Gadget Audio driver is compatible with USB Audio Class specification 2.0. It implements 1 AudioControl interface, @@ -73,10 +75,17 @@ config USB_AUDIO dynamically linked module called "g_audio". config GADGET_UAC1 - bool "UAC 1.0 (Legacy)" + bool "UAC 1.0" depends on USB_AUDIO help - If you instead want older UAC Spec-1.0 driver that also has audio + If you instead want older USB Audio Class specification 1.0 support + with similar driver capabilities. + +config GADGET_UAC1_LEGACY + bool "UAC 1.0 (Legacy)" + depends on GADGET_UAC1 + help + If you instead want legacy UAC Spec-1.0 driver that also has audio paths hardwired to the Audio codec chip on-board and doesn't work without one. diff --git a/drivers/usb/gadget/legacy/audio.c b/drivers/usb/gadget/legacy/audio.c index 8a39f42..1f5cdbe 100644 --- a/drivers/usb/gadget/legacy/audio.c +++ b/drivers/usb/gadget/legacy/audio.c @@ -53,8 +53,41 @@ static int c_ssize = UAC2_DEF_CSSIZE; module_param(c_ssize, uint, S_IRUGO); MODULE_PARM_DESC(c_ssize, "Capture Sample Size(bytes)"); #else +#ifndef CONFIG_GADGET_UAC1_LEGACY #include "u_uac1.h" +/* Playback(USB-IN) Default Stereo - Fl/Fr */ +static int p_chmask = UAC1_DEF_PCHMASK; +module_param(p_chmask, uint, S_IRUGO); +MODULE_PARM_DESC(p_chmask, "Playback Channel Mask"); + +/* Playback Default 48 KHz */ +static int p_srate = UAC1_DEF_PSRATE; +module_param(p_srate, uint, S_IRUGO); +MODULE_PARM_DESC(p_srate, "Playback Sampling Rate"); + +/* Playback Default 16bits/sample */ +static int p_ssize = UAC1_DEF_PSSIZE; +module_param(p_ssize, uint, S_IRUGO); +MODULE_PARM_DESC(p_ssize, "Playback Sample Size(bytes)"); + +/* Capture(USB-OUT) Default Stereo - Fl/Fr */ +static int c_chmask = UAC1_DEF_CCHMASK; +module_param(c_chmask, uint, S_IRUGO); +MODULE_PARM_DESC(c_chmask, "Capture Channel Mask"); + +/* Capture Default 48 KHz */ +static int c_srate = UAC1_DEF_CSRATE; +module_param(c_srate, uint, S_IRUGO); +MODULE_PARM_DESC(c_srate, "Capture Sampling Rate"); + +/* Capture Default 16bits/sample */ +static int c_ssize = UAC1_DEF_CSSIZE; +module_param(c_ssize, uint, S_IRUGO); +MODULE_PARM_DESC(c_ssize, "Capture Sample Size(bytes)"); +#else /* CONFIG_GADGET_UAC1_LEGACY */ +#include "u_uac1_legacy.h" + static char *fn_play = FILE_PCM_PLAYBACK; module_param(fn_play, charp, S_IRUGO); MODULE_PARM_DESC(fn_play, "Playback PCM device file name"); @@ -78,6 +111,7 @@ MODULE_PARM_DESC(req_count, "ISO OUT endpoint request count"); static int audio_buf_size = UAC1_AUDIO_BUF_SIZE; module_param(audio_buf_size, int, S_IRUGO); MODULE_PARM_DESC(audio_buf_size, "Audio buffer size"); +#endif /* CONFIG_GADGET_UAC1_LEGACY */ #endif /* string IDs are assigned dynamically */ @@ -125,7 +159,7 @@ static struct usb_device_descriptor device_desc = { /* .bcdUSB = DYNAMIC */ -#ifdef CONFIG_GADGET_UAC1 +#ifdef CONFIG_GADGET_UAC1_LEGACY .bDeviceClass = USB_CLASS_PER_INTERFACE, .bDeviceSubClass = 0, .bDeviceProtocol = 0, @@ -207,7 +241,11 @@ static int audio_bind(struct usb_composite_dev *cdev) #ifndef CONFIG_GADGET_UAC1 struct f_uac2_opts *uac2_opts; #else +#ifndef CONFIG_GADGET_UAC1_LEGACY struct f_uac1_opts *uac1_opts; +#else + struct f_uac1_legacy_opts *uac1_opts; +#endif #endif int status; @@ -216,7 +254,11 @@ static int audio_bind(struct usb_composite_dev *cdev) if (IS_ERR(fi_uac2)) return PTR_ERR(fi_uac2); #else +#ifndef CONFIG_GADGET_UAC1_LEGACY fi_uac1 = usb_get_function_instance("uac1"); +#else + fi_uac1 = usb_get_function_instance("uac1_legacy"); +#endif if (IS_ERR(fi_uac1)) return PTR_ERR(fi_uac1); #endif @@ -231,13 +273,24 @@ static int audio_bind(struct usb_composite_dev *cdev) uac2_opts->c_ssize = c_ssize; uac2_opts->req_number = UAC2_DEF_REQ_NUM; #else +#ifndef CONFIG_GADGET_UAC1_LEGACY uac1_opts = container_of(fi_uac1, struct f_uac1_opts, func_inst); + uac1_opts->p_chmask = p_chmask; + uac1_opts->p_srate = p_srate; + uac1_opts->p_ssize = p_ssize; + uac1_opts->c_chmask = c_chmask; + uac1_opts->c_srate = c_srate; + uac1_opts->c_ssize = c_ssize; + uac1_opts->req_number = UAC1_DEF_REQ_NUM; +#else /* CONFIG_GADGET_UAC1_LEGACY */ + uac1_opts = container_of(fi_uac1, struct f_uac1_legacy_opts, func_inst); uac1_opts->fn_play = fn_play; uac1_opts->fn_cap = fn_cap; uac1_opts->fn_cntl = fn_cntl; uac1_opts->req_buf_size = req_buf_size; uac1_opts->req_count = req_count; uac1_opts->audio_buf_size = audio_buf_size; +#endif /* CONFIG_GADGET_UAC1_LEGACY */ #endif status = usb_string_ids_tab(cdev, strings_dev); diff --git a/drivers/usb/gadget/legacy/mass_storage.c b/drivers/usb/gadget/legacy/mass_storage.c index 125974f..e99ab57 100644 --- a/drivers/usb/gadget/legacy/mass_storage.c +++ b/drivers/usb/gadget/legacy/mass_storage.c @@ -210,7 +210,6 @@ static int msg_bind(struct usb_composite_dev *cdev) usb_composite_overwrite_options(cdev, &coverwrite); dev_info(&cdev->gadget->dev, DRIVER_DESC ", version: " DRIVER_VERSION "\n"); - set_bit(0, &msg_registered); return 0; fail_otg_desc: @@ -257,7 +256,12 @@ MODULE_LICENSE("GPL"); static int __init msg_init(void) { - return usb_composite_probe(&msg_driver); + int ret; + + ret = usb_composite_probe(&msg_driver); + set_bit(0, &msg_registered); + + return ret; } module_init(msg_init); diff --git a/drivers/usb/gadget/udc/Kconfig b/drivers/usb/gadget/udc/Kconfig index 1c14c28..9ffb11e 100644 --- a/drivers/usb/gadget/udc/Kconfig +++ b/drivers/usb/gadget/udc/Kconfig @@ -55,7 +55,7 @@ config USB_LPC32XX config USB_ATMEL_USBA tristate "Atmel USBA" - depends on ((AVR32 && !OF) || ARCH_AT91) + depends on ARCH_AT91 help USBA is the integrated high-speed USB Device controller on the AT32AP700x, some AT91SAM9 and AT91CAP9 processors from Atmel. @@ -256,7 +256,7 @@ config USB_MV_U3D controller, which support super speed USB peripheral. config USB_SNP_CORE - depends on USB_AMD5536UDC + depends on (USB_AMD5536UDC || USB_SNP_UDC_PLAT) tristate help This enables core driver support for Synopsys USB 2.0 Device @@ -269,6 +269,20 @@ config USB_SNP_CORE This IP is different to the High Speed OTG IP that can be enabled by selecting USB_DWC2 or USB_DWC3 options. +config USB_SNP_UDC_PLAT + tristate "Synopsys USB 2.0 Device controller" + depends on (USB_GADGET && OF) + select USB_GADGET_DUALSPEED + select USB_SNP_CORE + default ARCH_BCM_IPROC + help + This adds Platform Device support for Synopsys Designware core + AHB subsystem USB2.0 Device Controller (UDC). + + This driver works with UDCs integrated into Broadcom's Northstar2 + and Cygnus SoCs. + + If unsure, say N. # # Controllers available in both integrated and discrete versions # diff --git a/drivers/usb/gadget/udc/Makefile b/drivers/usb/gadget/udc/Makefile index 626e1f1..ea9e1c7 100644 --- a/drivers/usb/gadget/udc/Makefile +++ b/drivers/usb/gadget/udc/Makefile @@ -10,7 +10,7 @@ obj-$(CONFIG_USB_GADGET) += udc-core.o obj-$(CONFIG_USB_DUMMY_HCD) += dummy_hcd.o obj-$(CONFIG_USB_NET2272) += net2272.o obj-$(CONFIG_USB_NET2280) += net2280.o -obj-$(CONFIG_USB_SNP_CORE) += amd5536udc.o +obj-$(CONFIG_USB_SNP_CORE) += snps_udc_core.o obj-$(CONFIG_USB_AMD5536UDC) += amd5536udc_pci.o obj-$(CONFIG_USB_PXA25X) += pxa25x_udc.o obj-$(CONFIG_USB_PXA27X) += pxa27x_udc.o @@ -37,4 +37,5 @@ obj-$(CONFIG_USB_FOTG210_UDC) += fotg210-udc.o obj-$(CONFIG_USB_MV_U3D) += mv_u3d_core.o obj-$(CONFIG_USB_GR_UDC) += gr_udc.o obj-$(CONFIG_USB_GADGET_XILINX) += udc-xilinx.o +obj-$(CONFIG_USB_SNP_UDC_PLAT) += snps_udc_plat.o obj-$(CONFIG_USB_BDC_UDC) += bdc/ diff --git a/drivers/usb/gadget/udc/amd5536udc.h b/drivers/usb/gadget/udc/amd5536udc.h index fae49bf..4fe22d4 100644 --- a/drivers/usb/gadget/udc/amd5536udc.h +++ b/drivers/usb/gadget/udc/amd5536udc.h @@ -16,6 +16,7 @@ /* debug control */ /* #define UDC_VERBOSE */ +#include <linux/extcon.h> #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> @@ -28,6 +29,9 @@ #define UDC_HSA0_REV 1 #define UDC_HSB1_REV 2 +/* Broadcom chip rev. */ +#define UDC_BCM_REV 10 + /* * SETUP usb commands * needed, because some SETUP's are handled in hw, but must be passed to @@ -112,6 +116,7 @@ #define UDC_DEVCTL_BRLEN_MASK 0x00ff0000 #define UDC_DEVCTL_BRLEN_OFS 16 +#define UDC_DEVCTL_SRX_FLUSH 14 #define UDC_DEVCTL_CSR_DONE 13 #define UDC_DEVCTL_DEVNAK 12 #define UDC_DEVCTL_SD 10 @@ -563,6 +568,16 @@ struct udc { u16 cur_config; u16 cur_intf; u16 cur_alt; + + /* for platform device and extcon support */ + struct device *dev; + struct phy *udc_phy; + struct extcon_dev *edev; + struct extcon_specific_cable_nb extcon_nb; + struct notifier_block nb; + struct delayed_work drd_work; + struct workqueue_struct *drd_wq; + u32 conn_type; }; #define to_amd5536_udc(g) (container_of((g), struct udc, gadget)) @@ -578,6 +593,7 @@ int udc_enable_dev_setup_interrupts(struct udc *dev); int udc_mask_unused_interrupts(struct udc *dev); irqreturn_t udc_irq(int irq, void *pdev); void gadget_release(struct device *pdev); +void empty_req_queue(struct udc_ep *ep); void udc_basic_init(struct udc *dev); void free_dma_pools(struct udc *dev); int init_dma_pools(struct udc *dev); @@ -639,7 +655,7 @@ MODULE_PARM_DESC(use_fullspeed, "true for fullspeed only"); /* debug macros ------------------------------------------------------------*/ -#define DBG(udc , args...) dev_dbg(&(udc)->pdev->dev, args) +#define DBG(udc , args...) dev_dbg(udc->dev, args) #ifdef UDC_VERBOSE #define VDBG DBG diff --git a/drivers/usb/gadget/udc/amd5536udc_pci.c b/drivers/usb/gadget/udc/amd5536udc_pci.c index 2a2d0a9..57a13f0 100644 --- a/drivers/usb/gadget/udc/amd5536udc_pci.c +++ b/drivers/usb/gadget/udc/amd5536udc_pci.c @@ -168,6 +168,7 @@ static int udc_pci_probe( dev->phys_addr = resource; dev->irq = pdev->irq; dev->pdev = pdev; + dev->dev = &pdev->dev; /* general probing */ if (udc_probe(dev)) { diff --git a/drivers/usb/gadget/udc/atmel_usba_udc.c b/drivers/usb/gadget/udc/atmel_usba_udc.c index 3ccc341..98d7140 100644 --- a/drivers/usb/gadget/udc/atmel_usba_udc.c +++ b/drivers/usb/gadget/udc/atmel_usba_udc.c @@ -152,7 +152,7 @@ static int regs_dbg_open(struct inode *inode, struct file *file) spin_lock_irq(&udc->lock); for (i = 0; i < inode->i_size / 4; i++) - data[i] = usba_io_readl(udc->regs + i * 4); + data[i] = readl_relaxed(udc->regs + i * 4); spin_unlock_irq(&udc->lock); file->private_data = data; @@ -1369,7 +1369,7 @@ static int handle_ep0_setup(struct usba_udc *udc, struct usba_ep *ep, if (crq->wLength != cpu_to_le16(sizeof(status))) goto stall; ep->state = DATA_STAGE_IN; - usba_io_writew(status, ep->fifo); + writew_relaxed(status, ep->fifo); usba_ep_writel(ep, SET_STA, USBA_TX_PK_RDY); break; } diff --git a/drivers/usb/gadget/udc/atmel_usba_udc.h b/drivers/usb/gadget/udc/atmel_usba_udc.h index 9551b70..f8ebe03 100644 --- a/drivers/usb/gadget/udc/atmel_usba_udc.h +++ b/drivers/usb/gadget/udc/atmel_usba_udc.h @@ -43,13 +43,8 @@ #define USBA_REMOTE_WAKE_UP (1 << 10) #define USBA_PULLD_DIS (1 << 11) -#if defined(CONFIG_AVR32) -#define USBA_ENABLE_MASK USBA_EN_USBA -#define USBA_DISABLE_MASK 0 -#elif defined(CONFIG_ARCH_AT91) #define USBA_ENABLE_MASK (USBA_EN_USBA | USBA_PULLD_DIS) #define USBA_DISABLE_MASK USBA_DETACH -#endif /* CONFIG_ARCH_AT91 */ /* Bitfields in FNUM */ #define USBA_MICRO_FRAME_NUM_OFFSET 0 @@ -191,28 +186,18 @@ | USBA_BF(name, value)) /* Register access macros */ -#ifdef CONFIG_AVR32 -#define usba_io_readl __raw_readl -#define usba_io_writel __raw_writel -#define usba_io_writew __raw_writew -#else -#define usba_io_readl readl_relaxed -#define usba_io_writel writel_relaxed -#define usba_io_writew writew_relaxed -#endif - #define usba_readl(udc, reg) \ - usba_io_readl((udc)->regs + USBA_##reg) + readl_relaxed((udc)->regs + USBA_##reg) #define usba_writel(udc, reg, value) \ - usba_io_writel((value), (udc)->regs + USBA_##reg) + writel_relaxed((value), (udc)->regs + USBA_##reg) #define usba_ep_readl(ep, reg) \ - usba_io_readl((ep)->ep_regs + USBA_EPT_##reg) + readl_relaxed((ep)->ep_regs + USBA_EPT_##reg) #define usba_ep_writel(ep, reg, value) \ - usba_io_writel((value), (ep)->ep_regs + USBA_EPT_##reg) + writel_relaxed((value), (ep)->ep_regs + USBA_EPT_##reg) #define usba_dma_readl(ep, reg) \ - usba_io_readl((ep)->dma_regs + USBA_DMA_##reg) + readl_relaxed((ep)->dma_regs + USBA_DMA_##reg) #define usba_dma_writel(ep, reg, value) \ - usba_io_writel((value), (ep)->dma_regs + USBA_DMA_##reg) + writel_relaxed((value), (ep)->dma_regs + USBA_DMA_##reg) /* Calculate base address for a given endpoint or DMA controller */ #define USBA_EPT_BASE(x) (0x100 + (x) * 0x20) diff --git a/drivers/usb/gadget/udc/bdc/bdc_core.c b/drivers/usb/gadget/udc/bdc/bdc_core.c index ccb9c21..e9bd8d4 100644 --- a/drivers/usb/gadget/udc/bdc/bdc_core.c +++ b/drivers/usb/gadget/udc/bdc/bdc_core.c @@ -475,7 +475,7 @@ static int bdc_probe(struct platform_device *pdev) bdc->dev = dev; dev_dbg(bdc->dev, "bdc->regs: %p irq=%d\n", bdc->regs, bdc->irq); - temp = bdc_readl(bdc->regs, BDC_BDCSC); + temp = bdc_readl(bdc->regs, BDC_BDCCAP1); if ((temp & BDC_P64) && !dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64))) { dev_dbg(bdc->dev, "Using 64-bit address\n"); diff --git a/drivers/usb/gadget/udc/core.c b/drivers/usb/gadget/udc/core.c index a03aec5..e6f04ee 100644 --- a/drivers/usb/gadget/udc/core.c +++ b/drivers/usb/gadget/udc/core.c @@ -140,10 +140,8 @@ int usb_ep_disable(struct usb_ep *ep) goto out; ret = ep->ops->disable(ep); - if (ret) { - ret = ret; + if (ret) goto out; - } ep->enabled = false; @@ -1067,6 +1065,23 @@ static inline void usb_gadget_udc_stop(struct usb_udc *udc) } /** + * usb_gadget_udc_set_speed - tells usb device controller speed supported by + * current driver + * @udc: The device we want to set maximum speed + * @speed: The maximum speed to allowed to run + * + * This call is issued by the UDC Class driver before calling + * usb_gadget_udc_start() in order to make sure that we don't try to + * connect on speeds the gadget driver doesn't support. + */ +static inline void usb_gadget_udc_set_speed(struct usb_udc *udc, + enum usb_device_speed speed) +{ + if (udc->gadget->ops->udc_set_speed) + udc->gadget->ops->udc_set_speed(udc->gadget, speed); +} + +/** * usb_udc_release - release the usb_udc struct * @dev: the dev member within usb_udc * @@ -1299,6 +1314,9 @@ static int udc_bind_to_driver(struct usb_udc *udc, struct usb_gadget_driver *dri udc->dev.driver = &driver->driver; udc->gadget->dev.driver = &driver->driver; + if (driver->max_speed < udc->gadget->max_speed) + usb_gadget_udc_set_speed(udc, driver->max_speed); + ret = driver->bind(udc->gadget, driver); if (ret) goto err1; @@ -1451,6 +1469,18 @@ static ssize_t state_show(struct device *dev, struct device_attribute *attr, } static DEVICE_ATTR_RO(state); +static ssize_t function_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct usb_udc *udc = container_of(dev, struct usb_udc, dev); + struct usb_gadget_driver *drv = udc->driver; + + if (!drv || !drv->function) + return 0; + return scnprintf(buf, PAGE_SIZE, "%s\n", drv->function); +} +static DEVICE_ATTR_RO(function); + #define USB_UDC_SPEED_ATTR(name, param) \ ssize_t name##_show(struct device *dev, \ struct device_attribute *attr, char *buf) \ @@ -1486,6 +1516,7 @@ static struct attribute *usb_udc_attrs[] = { &dev_attr_srp.attr, &dev_attr_soft_connect.attr, &dev_attr_state.attr, + &dev_attr_function.attr, &dev_attr_current_speed.attr, &dev_attr_maximum_speed.attr, diff --git a/drivers/usb/gadget/udc/dummy_hcd.c b/drivers/usb/gadget/udc/dummy_hcd.c index 7635fd7..3c37603 100644 --- a/drivers/usb/gadget/udc/dummy_hcd.c +++ b/drivers/usb/gadget/udc/dummy_hcd.c @@ -881,22 +881,6 @@ static int dummy_pullup(struct usb_gadget *_gadget, int value) unsigned long flags; dum = gadget_dev_to_dummy(&_gadget->dev); - - if (value && dum->driver) { - if (mod_data.is_super_speed) - dum->gadget.speed = dum->driver->max_speed; - else if (mod_data.is_high_speed) - dum->gadget.speed = min_t(u8, USB_SPEED_HIGH, - dum->driver->max_speed); - else - dum->gadget.speed = USB_SPEED_FULL; - dummy_udc_update_ep0(dum); - - if (dum->gadget.speed < dum->driver->max_speed) - dev_dbg(udc_dev(dum), "This device can perform faster" - " if you connect it to a %s port...\n", - usb_speed_string(dum->driver->max_speed)); - } dum_hcd = gadget_to_dummy_hcd(_gadget); spin_lock_irqsave(&dum->lock, flags); @@ -908,6 +892,28 @@ static int dummy_pullup(struct usb_gadget *_gadget, int value) return 0; } +static void dummy_udc_set_speed(struct usb_gadget *_gadget, + enum usb_device_speed speed) +{ + struct dummy *dum; + + dum = gadget_dev_to_dummy(&_gadget->dev); + + if (mod_data.is_super_speed) + dum->gadget.speed = min_t(u8, USB_SPEED_SUPER, speed); + else if (mod_data.is_high_speed) + dum->gadget.speed = min_t(u8, USB_SPEED_HIGH, speed); + else + dum->gadget.speed = USB_SPEED_FULL; + + dummy_udc_update_ep0(dum); + + if (dum->gadget.speed < speed) + dev_dbg(udc_dev(dum), "This device can perform faster" + " if you connect it to a %s port...\n", + usb_speed_string(speed)); +} + static int dummy_udc_start(struct usb_gadget *g, struct usb_gadget_driver *driver); static int dummy_udc_stop(struct usb_gadget *g); @@ -919,6 +925,7 @@ static const struct usb_gadget_ops dummy_ops = { .pullup = dummy_pullup, .udc_start = dummy_udc_start, .udc_stop = dummy_udc_stop, + .udc_set_speed = dummy_udc_set_speed, }; /*-------------------------------------------------------------------------*/ diff --git a/drivers/usb/gadget/udc/mv_udc_core.c b/drivers/usb/gadget/udc/mv_udc_core.c index 76f56c5..8a708d0 100644 --- a/drivers/usb/gadget/udc/mv_udc_core.c +++ b/drivers/usb/gadget/udc/mv_udc_core.c @@ -960,9 +960,9 @@ static const struct usb_ep_ops mv_ep_ops = { .fifo_flush = mv_ep_fifo_flush, /* flush fifo */ }; -static void udc_clock_enable(struct mv_udc *udc) +static int udc_clock_enable(struct mv_udc *udc) { - clk_prepare_enable(udc->clk); + return clk_prepare_enable(udc->clk); } static void udc_clock_disable(struct mv_udc *udc) @@ -1070,7 +1070,10 @@ static int mv_udc_enable_internal(struct mv_udc *udc) return 0; dev_dbg(&udc->dev->dev, "enable udc\n"); - udc_clock_enable(udc); + retval = udc_clock_enable(udc); + if (retval) + return retval; + if (udc->pdata->phy_init) { retval = udc->pdata->phy_init(udc->phy_regs); if (retval) { diff --git a/drivers/usb/gadget/udc/net2280.c b/drivers/usb/gadget/udc/net2280.c index f2cbd7f..f608c1f 100644 --- a/drivers/usb/gadget/udc/net2280.c +++ b/drivers/usb/gadget/udc/net2280.c @@ -3566,7 +3566,6 @@ static void net2280_remove(struct pci_dev *pdev) BUG_ON(dev->driver); /* then clean up the resources we allocated during probe() */ - net2280_led_shutdown(dev); if (dev->requests) { int i; for (i = 1; i < 5; i++) { @@ -3581,8 +3580,10 @@ static void net2280_remove(struct pci_dev *pdev) free_irq(pdev->irq, dev); if (dev->quirks & PLX_PCIE) pci_disable_msi(pdev); - if (dev->regs) + if (dev->regs) { + net2280_led_shutdown(dev); iounmap(dev->regs); + } if (dev->region) release_mem_region(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); diff --git a/drivers/usb/gadget/udc/renesas_usb3.c b/drivers/usb/gadget/udc/renesas_usb3.c index cd4c885..d827832 100644 --- a/drivers/usb/gadget/udc/renesas_usb3.c +++ b/drivers/usb/gadget/udc/renesas_usb3.c @@ -9,6 +9,7 @@ */ #include <linux/delay.h> +#include <linux/dma-mapping.h> #include <linux/err.h> #include <linux/extcon.h> #include <linux/interrupt.h> @@ -27,6 +28,8 @@ #define USB3_AXI_INT_ENA 0x00c #define USB3_DMA_INT_STA 0x010 #define USB3_DMA_INT_ENA 0x014 +#define USB3_DMA_CH0_CON(n) (0x030 + ((n) - 1) * 0x10) /* n = 1 to 4 */ +#define USB3_DMA_CH0_PRD_ADR(n) (0x034 + ((n) - 1) * 0x10) /* n = 1 to 4 */ #define USB3_USB_COM_CON 0x200 #define USB3_USB20_CON 0x204 #define USB3_USB30_CON 0x208 @@ -64,6 +67,22 @@ /* AXI_INT_ENA and AXI_INT_STA */ #define AXI_INT_DMAINT BIT(31) #define AXI_INT_EPCINT BIT(30) +/* PRD's n = from 1 to 4 */ +#define AXI_INT_PRDEN_CLR_STA_SHIFT(n) (16 + (n) - 1) +#define AXI_INT_PRDERR_STA_SHIFT(n) (0 + (n) - 1) +#define AXI_INT_PRDEN_CLR_STA(n) (1 << AXI_INT_PRDEN_CLR_STA_SHIFT(n)) +#define AXI_INT_PRDERR_STA(n) (1 << AXI_INT_PRDERR_STA_SHIFT(n)) + +/* DMA_INT_ENA and DMA_INT_STA */ +#define DMA_INT(n) BIT(n) + +/* DMA_CH0_CONn */ +#define DMA_CON_PIPE_DIR BIT(15) /* 1: In Transfer */ +#define DMA_CON_PIPE_NO_SHIFT 8 +#define DMA_CON_PIPE_NO_MASK GENMASK(12, DMA_CON_PIPE_NO_SHIFT) +#define DMA_COM_PIPE_NO(n) (((n) << DMA_CON_PIPE_NO_SHIFT) & \ + DMA_CON_PIPE_NO_MASK) +#define DMA_CON_PRD_EN BIT(0) /* LCLKSEL */ #define LCLKSEL_LSEL BIT(18) @@ -231,8 +250,50 @@ #define USB3_EP0_BUF_SIZE 8 #define USB3_MAX_NUM_PIPES 30 #define USB3_WAIT_US 3 +#define USB3_DMA_NUM_SETTING_AREA 4 +/* + * To avoid double-meaning of "0" (xferred 65536 bytes or received zlp if + * buffer size is 65536), this driver uses the maximum size per a entry is + * 32768 bytes. + */ +#define USB3_DMA_MAX_XFER_SIZE 32768 +#define USB3_DMA_PRD_SIZE 4096 struct renesas_usb3; + +/* Physical Region Descriptor Table */ +struct renesas_usb3_prd { + u32 word1; +#define USB3_PRD1_E BIT(30) /* the end of chain */ +#define USB3_PRD1_U BIT(29) /* completion of transfer */ +#define USB3_PRD1_D BIT(28) /* Error occurred */ +#define USB3_PRD1_INT BIT(27) /* Interrupt occurred */ +#define USB3_PRD1_LST BIT(26) /* Last Packet */ +#define USB3_PRD1_B_INC BIT(24) +#define USB3_PRD1_MPS_8 0 +#define USB3_PRD1_MPS_16 BIT(21) +#define USB3_PRD1_MPS_32 BIT(22) +#define USB3_PRD1_MPS_64 (BIT(22) | BIT(21)) +#define USB3_PRD1_MPS_512 BIT(23) +#define USB3_PRD1_MPS_1024 (BIT(23) | BIT(21)) +#define USB3_PRD1_MPS_RESERVED (BIT(23) | BIT(22) | BIT(21)) +#define USB3_PRD1_SIZE_MASK GENMASK(15, 0) + + u32 bap; +}; +#define USB3_DMA_NUM_PRD_ENTRIES (USB3_DMA_PRD_SIZE / \ + sizeof(struct renesas_usb3_prd)) +#define USB3_DMA_MAX_XFER_SIZE_ALL_PRDS (USB3_DMA_PRD_SIZE / \ + sizeof(struct renesas_usb3_prd) * \ + USB3_DMA_MAX_XFER_SIZE) + +struct renesas_usb3_dma { + struct renesas_usb3_prd *prd; + dma_addr_t prd_dma; + int num; /* Setting area number (from 1 to 4) */ + bool used; +}; + struct renesas_usb3_request { struct usb_request req; struct list_head queue; @@ -242,6 +303,7 @@ struct renesas_usb3_request { struct renesas_usb3_ep { struct usb_ep ep; struct renesas_usb3 *usb3; + struct renesas_usb3_dma *dma; int num; char ep_name[USB3_EP_NAME_SIZE]; struct list_head queue; @@ -270,6 +332,8 @@ struct renesas_usb3 { struct renesas_usb3_ep *usb3_ep; int num_usb3_eps; + struct renesas_usb3_dma dma[USB3_DMA_NUM_SETTING_AREA]; + spinlock_t lock; int disabled_count; @@ -298,8 +362,18 @@ struct renesas_usb3 { (i) < (usb3)->num_usb3_eps; \ (i)++, usb3_ep = usb3_get_ep(usb3, (i))) +#define usb3_get_dma(usb3, i) (&(usb3)->dma[i]) +#define usb3_for_each_dma(usb3, dma, i) \ + for ((i) = 0, dma = usb3_get_dma((usb3), (i)); \ + (i) < USB3_DMA_NUM_SETTING_AREA; \ + (i)++, dma = usb3_get_dma((usb3), (i))) + static const char udc_name[] = "renesas_usb3"; +static bool use_dma = 1; +module_param(use_dma, bool, 0644); +MODULE_PARM_DESC(use_dma, "use dedicated DMAC"); + static void usb3_write(struct renesas_usb3 *usb3, u32 data, u32 offs) { iowrite32(data, usb3->reg + offs); @@ -1059,6 +1133,273 @@ static void usb3_start_pipe0(struct renesas_usb3_ep *usb3_ep, usb3_p0_xfer(usb3_ep, usb3_req); } +static void usb3_enable_dma_pipen(struct renesas_usb3 *usb3) +{ + usb3_set_bit(usb3, PN_CON_DATAIF_EN, USB3_PN_CON); +} + +static void usb3_disable_dma_pipen(struct renesas_usb3 *usb3) +{ + usb3_clear_bit(usb3, PN_CON_DATAIF_EN, USB3_PN_CON); +} + +static void usb3_enable_dma_irq(struct renesas_usb3 *usb3, int num) +{ + usb3_set_bit(usb3, DMA_INT(num), USB3_DMA_INT_ENA); +} + +static void usb3_disable_dma_irq(struct renesas_usb3 *usb3, int num) +{ + usb3_clear_bit(usb3, DMA_INT(num), USB3_DMA_INT_ENA); +} + +static u32 usb3_dma_mps_to_prd_word1(struct renesas_usb3_ep *usb3_ep) +{ + switch (usb3_ep->ep.maxpacket) { + case 8: + return USB3_PRD1_MPS_8; + case 16: + return USB3_PRD1_MPS_16; + case 32: + return USB3_PRD1_MPS_32; + case 64: + return USB3_PRD1_MPS_64; + case 512: + return USB3_PRD1_MPS_512; + case 1024: + return USB3_PRD1_MPS_1024; + default: + return USB3_PRD1_MPS_RESERVED; + } +} + +static bool usb3_dma_get_setting_area(struct renesas_usb3_ep *usb3_ep, + struct renesas_usb3_request *usb3_req) +{ + struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); + struct renesas_usb3_dma *dma; + int i; + bool ret = false; + + if (usb3_req->req.length > USB3_DMA_MAX_XFER_SIZE_ALL_PRDS) { + dev_dbg(usb3_to_dev(usb3), "%s: the length is too big (%d)\n", + __func__, usb3_req->req.length); + return false; + } + + /* The driver doesn't handle zero-length packet via dmac */ + if (!usb3_req->req.length) + return false; + + if (usb3_dma_mps_to_prd_word1(usb3_ep) == USB3_PRD1_MPS_RESERVED) + return false; + + usb3_for_each_dma(usb3, dma, i) { + if (dma->used) + continue; + + if (usb_gadget_map_request(&usb3->gadget, &usb3_req->req, + usb3_ep->dir_in) < 0) + break; + + dma->used = true; + usb3_ep->dma = dma; + ret = true; + break; + } + + return ret; +} + +static void usb3_dma_put_setting_area(struct renesas_usb3_ep *usb3_ep, + struct renesas_usb3_request *usb3_req) +{ + struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); + int i; + struct renesas_usb3_dma *dma; + + usb3_for_each_dma(usb3, dma, i) { + if (usb3_ep->dma == dma) { + usb_gadget_unmap_request(&usb3->gadget, &usb3_req->req, + usb3_ep->dir_in); + dma->used = false; + usb3_ep->dma = NULL; + break; + } + } +} + +static void usb3_dma_fill_prd(struct renesas_usb3_ep *usb3_ep, + struct renesas_usb3_request *usb3_req) +{ + struct renesas_usb3_prd *cur_prd = usb3_ep->dma->prd; + u32 remain = usb3_req->req.length; + u32 dma = usb3_req->req.dma; + u32 len; + int i = 0; + + do { + len = min_t(u32, remain, USB3_DMA_MAX_XFER_SIZE) & + USB3_PRD1_SIZE_MASK; + cur_prd->word1 = usb3_dma_mps_to_prd_word1(usb3_ep) | + USB3_PRD1_B_INC | len; + cur_prd->bap = dma; + remain -= len; + dma += len; + if (!remain || (i + 1) < USB3_DMA_NUM_PRD_ENTRIES) + break; + + cur_prd++; + i++; + } while (1); + + cur_prd->word1 |= USB3_PRD1_E | USB3_PRD1_INT; + if (usb3_ep->dir_in) + cur_prd->word1 |= USB3_PRD1_LST; +} + +static void usb3_dma_kick_prd(struct renesas_usb3_ep *usb3_ep) +{ + struct renesas_usb3_dma *dma = usb3_ep->dma; + struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); + u32 dma_con = DMA_COM_PIPE_NO(usb3_ep->num) | DMA_CON_PRD_EN; + + if (usb3_ep->dir_in) + dma_con |= DMA_CON_PIPE_DIR; + + wmb(); /* prd entries should be in system memory here */ + + usb3_write(usb3, 1 << usb3_ep->num, USB3_DMA_INT_STA); + usb3_write(usb3, AXI_INT_PRDEN_CLR_STA(dma->num) | + AXI_INT_PRDERR_STA(dma->num), USB3_AXI_INT_STA); + + usb3_write(usb3, dma->prd_dma, USB3_DMA_CH0_PRD_ADR(dma->num)); + usb3_write(usb3, dma_con, USB3_DMA_CH0_CON(dma->num)); + usb3_enable_dma_irq(usb3, usb3_ep->num); +} + +static void usb3_dma_stop_prd(struct renesas_usb3_ep *usb3_ep) +{ + struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); + struct renesas_usb3_dma *dma = usb3_ep->dma; + + usb3_disable_dma_irq(usb3, usb3_ep->num); + usb3_write(usb3, 0, USB3_DMA_CH0_CON(dma->num)); +} + +static int usb3_dma_update_status(struct renesas_usb3_ep *usb3_ep, + struct renesas_usb3_request *usb3_req) +{ + struct renesas_usb3_prd *cur_prd = usb3_ep->dma->prd; + struct usb_request *req = &usb3_req->req; + u32 remain, len; + int i = 0; + int status = 0; + + rmb(); /* The controller updated prd entries */ + + do { + if (cur_prd->word1 & USB3_PRD1_D) + status = -EIO; + if (cur_prd->word1 & USB3_PRD1_E) + len = req->length % USB3_DMA_MAX_XFER_SIZE; + else + len = USB3_DMA_MAX_XFER_SIZE; + remain = cur_prd->word1 & USB3_PRD1_SIZE_MASK; + req->actual += len - remain; + + if (cur_prd->word1 & USB3_PRD1_E || + (i + 1) < USB3_DMA_NUM_PRD_ENTRIES) + break; + + cur_prd++; + i++; + } while (1); + + return status; +} + +static bool usb3_dma_try_start(struct renesas_usb3_ep *usb3_ep, + struct renesas_usb3_request *usb3_req) +{ + struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); + + if (!use_dma) + return false; + + if (usb3_dma_get_setting_area(usb3_ep, usb3_req)) { + usb3_pn_stop(usb3); + usb3_enable_dma_pipen(usb3); + usb3_dma_fill_prd(usb3_ep, usb3_req); + usb3_dma_kick_prd(usb3_ep); + usb3_pn_start(usb3); + return true; + } + + return false; +} + +static int usb3_dma_try_stop(struct renesas_usb3_ep *usb3_ep, + struct renesas_usb3_request *usb3_req) +{ + struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); + unsigned long flags; + int status = 0; + + spin_lock_irqsave(&usb3->lock, flags); + if (!usb3_ep->dma) + goto out; + + if (!usb3_pn_change(usb3, usb3_ep->num)) + usb3_disable_dma_pipen(usb3); + usb3_dma_stop_prd(usb3_ep); + status = usb3_dma_update_status(usb3_ep, usb3_req); + usb3_dma_put_setting_area(usb3_ep, usb3_req); + +out: + spin_unlock_irqrestore(&usb3->lock, flags); + return status; +} + +static int renesas_usb3_dma_free_prd(struct renesas_usb3 *usb3, + struct device *dev) +{ + int i; + struct renesas_usb3_dma *dma; + + usb3_for_each_dma(usb3, dma, i) { + if (dma->prd) { + dma_free_coherent(dev, USB3_DMA_MAX_XFER_SIZE, + dma->prd, dma->prd_dma); + dma->prd = NULL; + } + } + + return 0; +} + +static int renesas_usb3_dma_alloc_prd(struct renesas_usb3 *usb3, + struct device *dev) +{ + int i; + struct renesas_usb3_dma *dma; + + if (!use_dma) + return 0; + + usb3_for_each_dma(usb3, dma, i) { + dma->prd = dma_alloc_coherent(dev, USB3_DMA_PRD_SIZE, + &dma->prd_dma, GFP_KERNEL); + if (!dma->prd) { + renesas_usb3_dma_free_prd(usb3, dev); + return -ENOMEM; + } + dma->num = i + 1; + } + + return 0; +} + static void usb3_start_pipen(struct renesas_usb3_ep *usb3_ep, struct renesas_usb3_request *usb3_req) { @@ -1078,6 +1419,10 @@ static void usb3_start_pipen(struct renesas_usb3_ep *usb3_ep, goto out; usb3_ep->started = true; + + if (usb3_dma_try_start(usb3_ep, usb3_req)) + goto out; + usb3_pn_start(usb3); if (usb3_ep->dir_in) { @@ -1603,12 +1948,49 @@ static void usb3_irq_epc(struct renesas_usb3 *usb3) } } +static void usb3_irq_dma_int(struct renesas_usb3 *usb3, u32 dma_sta) +{ + struct renesas_usb3_ep *usb3_ep; + struct renesas_usb3_request *usb3_req; + int i, status; + + for (i = 0; i < usb3->num_usb3_eps; i++) { + if (!(dma_sta & DMA_INT(i))) + continue; + + usb3_ep = usb3_get_ep(usb3, i); + if (!(usb3_read(usb3, USB3_AXI_INT_STA) & + AXI_INT_PRDEN_CLR_STA(usb3_ep->dma->num))) + continue; + + usb3_req = usb3_get_request(usb3_ep); + status = usb3_dma_try_stop(usb3_ep, usb3_req); + usb3_request_done_pipen(usb3, usb3_ep, usb3_req, status); + } +} + +static void usb3_irq_dma(struct renesas_usb3 *usb3) +{ + u32 dma_sta = usb3_read(usb3, USB3_DMA_INT_STA); + + dma_sta &= usb3_read(usb3, USB3_DMA_INT_ENA); + if (dma_sta) { + usb3_write(usb3, dma_sta, USB3_DMA_INT_STA); + usb3_irq_dma_int(usb3, dma_sta); + } +} + static irqreturn_t renesas_usb3_irq(int irq, void *_usb3) { struct renesas_usb3 *usb3 = _usb3; irqreturn_t ret = IRQ_NONE; u32 axi_int_sta = usb3_read(usb3, USB3_AXI_INT_STA); + if (axi_int_sta & AXI_INT_DMAINT) { + usb3_irq_dma(usb3); + ret = IRQ_HANDLED; + } + if (axi_int_sta & AXI_INT_EPCINT) { usb3_irq_epc(usb3); ret = IRQ_HANDLED; @@ -1708,6 +2090,7 @@ static int renesas_usb3_ep_disable(struct usb_ep *_ep) usb3_req = usb3_get_request(usb3_ep); if (!usb3_req) break; + usb3_dma_try_stop(usb3_ep, usb3_req); usb3_request_done(usb3_ep, usb3_req, -ESHUTDOWN); } while (1); @@ -1755,6 +2138,7 @@ static int renesas_usb3_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req) dev_dbg(usb3_to_dev(usb3), "ep_dequeue: ep%2d, %u\n", usb3_ep->num, _req->length); + usb3_dma_try_stop(usb3_ep, usb3_req); usb3_request_done_pipen(usb3, usb3_ep, usb3_req, -ECONNRESET); return 0; @@ -1917,6 +2301,7 @@ static int renesas_usb3_remove(struct platform_device *pdev) device_remove_file(&pdev->dev, &dev_attr_role); usb_del_gadget_udc(&usb3->gadget); + renesas_usb3_dma_free_prd(usb3, &pdev->dev); __renesas_usb3_ep_free_request(usb3->ep0_req); @@ -2111,6 +2496,10 @@ static int renesas_usb3_probe(struct platform_device *pdev) if (!usb3->ep0_req) return -ENOMEM; + ret = renesas_usb3_dma_alloc_prd(usb3, &pdev->dev); + if (ret < 0) + goto err_alloc_prd; + ret = usb_add_gadget_udc(&pdev->dev, &usb3->gadget); if (ret < 0) goto err_add_udc; @@ -2129,6 +2518,9 @@ err_dev_create: usb_del_gadget_udc(&usb3->gadget); err_add_udc: + renesas_usb3_dma_free_prd(usb3, &pdev->dev); + +err_alloc_prd: __renesas_usb3_ep_free_request(usb3->ep0_req); return ret; diff --git a/drivers/usb/gadget/udc/amd5536udc.c b/drivers/usb/gadget/udc/snps_udc_core.c index 4ecd2f2..38a165d 100644 --- a/drivers/usb/gadget/udc/amd5536udc.c +++ b/drivers/usb/gadget/udc/snps_udc_core.c @@ -41,7 +41,6 @@ #include "amd5536udc.h" static void udc_tasklet_disconnect(unsigned long); -static void empty_req_queue(struct udc_ep *); static void udc_setup_endpoints(struct udc *dev); static void udc_soft_reset(struct udc *dev); static struct udc_request *udc_alloc_bna_dummy(struct udc_ep *ep); @@ -209,18 +208,18 @@ static void print_regs(struct udc *dev) if (use_dma && use_dma_ppb && !use_dma_ppb_du) { DBG(dev, "DMA mode = PPBNDU (packet per buffer " "WITHOUT desc. update)\n"); - dev_info(&dev->pdev->dev, "DMA mode (%s)\n", "PPBNDU"); + dev_info(dev->dev, "DMA mode (%s)\n", "PPBNDU"); } else if (use_dma && use_dma_ppb && use_dma_ppb_du) { DBG(dev, "DMA mode = PPBDU (packet per buffer " "WITH desc. update)\n"); - dev_info(&dev->pdev->dev, "DMA mode (%s)\n", "PPBDU"); + dev_info(dev->dev, "DMA mode (%s)\n", "PPBDU"); } if (use_dma && use_dma_bufferfill_mode) { DBG(dev, "DMA mode = BF (buffer fill mode)\n"); - dev_info(&dev->pdev->dev, "DMA mode (%s)\n", "BF"); + dev_info(dev->dev, "DMA mode (%s)\n", "BF"); } if (!use_dma) - dev_info(&dev->pdev->dev, "FIFO mode\n"); + dev_info(dev->dev, "FIFO mode\n"); DBG(dev, "-------------------------------------------------------\n"); } @@ -1244,7 +1243,7 @@ finished: } /* Empty request queue of an endpoint; caller holds spinlock */ -static void empty_req_queue(struct udc_ep *ep) +void empty_req_queue(struct udc_ep *ep) { struct udc_request *req; @@ -1256,6 +1255,7 @@ static void empty_req_queue(struct udc_ep *ep) complete_req(ep, req, -ESHUTDOWN); } } +EXPORT_SYMBOL_GPL(empty_req_queue); /* Dequeues a request packet, called by gadget driver */ static int udc_dequeue(struct usb_ep *usbep, struct usb_request *usbreq) @@ -1623,8 +1623,11 @@ static void udc_setup_endpoints(struct udc *dev) /* Bringup after Connect event, initial bringup to be ready for ep0 events */ static void usb_connect(struct udc *dev) { + /* Return if already connected */ + if (dev->connected) + return; - dev_info(&dev->pdev->dev, "USB Connect\n"); + dev_info(dev->dev, "USB Connect\n"); dev->connected = 1; @@ -1641,8 +1644,11 @@ static void usb_connect(struct udc *dev) */ static void usb_disconnect(struct udc *dev) { + /* Return if already disconnected */ + if (!dev->connected) + return; - dev_info(&dev->pdev->dev, "USB Disconnect\n"); + dev_info(dev->dev, "USB Disconnect\n"); dev->connected = 0; @@ -1715,11 +1721,15 @@ static void udc_soft_reset(struct udc *dev) /* device int. status reset */ writel(UDC_DEV_MSK_DISABLE, &dev->regs->irqsts); - spin_lock_irqsave(&udc_irq_spinlock, flags); - writel(AMD_BIT(UDC_DEVCFG_SOFTRESET), &dev->regs->cfg); - readl(&dev->regs->cfg); - spin_unlock_irqrestore(&udc_irq_spinlock, flags); - + /* Don't do this for Broadcom UDC since this is a reserved + * bit. + */ + if (dev->chiprev != UDC_BCM_REV) { + spin_lock_irqsave(&udc_irq_spinlock, flags); + writel(AMD_BIT(UDC_DEVCFG_SOFTRESET), &dev->regs->cfg); + readl(&dev->regs->cfg); + spin_unlock_irqrestore(&udc_irq_spinlock, flags); + } } /* RDE timer callback to set RDE bit */ @@ -2106,7 +2116,7 @@ static irqreturn_t udc_data_out_isr(struct udc *dev, int ep_ix) } /* HE event ? */ if (tmp & AMD_BIT(UDC_EPSTS_HE)) { - dev_err(&dev->pdev->dev, "HE ep%dout occurred\n", ep->num); + dev_err(dev->dev, "HE ep%dout occurred\n", ep->num); /* clear HE */ writel(tmp | AMD_BIT(UDC_EPSTS_HE), &ep->regs->sts); @@ -2305,7 +2315,7 @@ static irqreturn_t udc_data_in_isr(struct udc *dev, int ep_ix) if (use_dma) { /* BNA ? */ if (epsts & AMD_BIT(UDC_EPSTS_BNA)) { - dev_err(&dev->pdev->dev, + dev_err(dev->dev, "BNA ep%din occurred - DESPTR = %08lx\n", ep->num, (unsigned long) readl(&ep->regs->desptr)); @@ -2318,7 +2328,7 @@ static irqreturn_t udc_data_in_isr(struct udc *dev, int ep_ix) } /* HE event ? */ if (epsts & AMD_BIT(UDC_EPSTS_HE)) { - dev_err(&dev->pdev->dev, + dev_err(dev->dev, "HE ep%dn occurred - DESPTR = %08lx\n", ep->num, (unsigned long) readl(&ep->regs->desptr)); @@ -2956,7 +2966,7 @@ __acquires(dev->lock) /* link up all endpoints */ udc_setup_endpoints(dev); - dev_info(&dev->pdev->dev, "Connect: %s\n", + dev_info(dev->dev, "Connect: %s\n", usb_speed_string(dev->gadget.speed)); /* init ep 0 */ @@ -3097,7 +3107,7 @@ int init_dma_pools(struct udc *dev) } /* DMA setup */ - dev->data_requests = dma_pool_create("data_requests", NULL, + dev->data_requests = dma_pool_create("data_requests", dev->dev, sizeof(struct udc_data_dma), 0, 0); if (!dev->data_requests) { DBG(dev, "can't get request data pool\n"); @@ -3108,7 +3118,7 @@ int init_dma_pools(struct udc *dev) dev->ep[UDC_EP0IN_IX].dma = &dev->regs->ctl; /* dma desc for setup data */ - dev->stp_requests = dma_pool_create("setup requests", NULL, + dev->stp_requests = dma_pool_create("setup requests", dev->dev, sizeof(struct udc_stp_dma), 0, 0); if (!dev->stp_requests) { DBG(dev, "can't get stp request pool\n"); @@ -3168,24 +3178,30 @@ int udc_probe(struct udc *dev) /* init registers, interrupts, ... */ startup_registers(dev); - dev_info(&dev->pdev->dev, "%s\n", mod_desc); + dev_info(dev->dev, "%s\n", mod_desc); snprintf(tmp, sizeof(tmp), "%d", dev->irq); - dev_info(&dev->pdev->dev, - "irq %s, pci mem %08lx, chip rev %02x(Geode5536 %s)\n", - tmp, dev->phys_addr, dev->chiprev, - (dev->chiprev == UDC_HSA0_REV) ? "A0" : "B1"); - strcpy(tmp, UDC_DRIVER_VERSION_STRING); - if (dev->chiprev == UDC_HSA0_REV) { - dev_err(&dev->pdev->dev, "chip revision is A0; too old\n"); - retval = -ENODEV; - goto finished; + + /* Print this device info for AMD chips only*/ + if (dev->chiprev == UDC_HSA0_REV || + dev->chiprev == UDC_HSB1_REV) { + dev_info(dev->dev, "irq %s, pci mem %08lx, chip rev %02x(Geode5536 %s)\n", + tmp, dev->phys_addr, dev->chiprev, + (dev->chiprev == UDC_HSA0_REV) ? + "A0" : "B1"); + strcpy(tmp, UDC_DRIVER_VERSION_STRING); + if (dev->chiprev == UDC_HSA0_REV) { + dev_err(dev->dev, "chip revision is A0; too old\n"); + retval = -ENODEV; + goto finished; + } + dev_info(dev->dev, + "driver version: %s(for Geode5536 B1)\n", tmp); } - dev_info(&dev->pdev->dev, - "driver version: %s(for Geode5536 B1)\n", tmp); + udc = dev; - retval = usb_add_gadget_udc_release(&udc->pdev->dev, &dev->gadget, + retval = usb_add_gadget_udc_release(udc->dev, &dev->gadget, gadget_release); if (retval) goto finished; diff --git a/drivers/usb/gadget/udc/snps_udc_plat.c b/drivers/usb/gadget/udc/snps_udc_plat.c new file mode 100644 index 0000000..2e11f19 --- /dev/null +++ b/drivers/usb/gadget/udc/snps_udc_plat.c @@ -0,0 +1,344 @@ +/* + * snps_udc_plat.c - Synopsys UDC Platform Driver + * + * Copyright (C) 2016 Broadcom + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation version 2. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/extcon.h> +#include <linux/of_address.h> +#include <linux/of_irq.h> +#include <linux/of_gpio.h> +#include <linux/platform_device.h> +#include <linux/phy/phy.h> +#include <linux/module.h> +#include <linux/dmapool.h> +#include <linux/interrupt.h> +#include <linux/moduleparam.h> +#include "amd5536udc.h" + +/* description */ +#define UDC_MOD_DESCRIPTION "Synopsys UDC platform driver" + +void start_udc(struct udc *udc) +{ + if (udc->driver) { + dev_info(udc->dev, "Connecting...\n"); + udc_enable_dev_setup_interrupts(udc); + udc_basic_init(udc); + udc->connected = 1; + } +} + +void stop_udc(struct udc *udc) +{ + int tmp; + u32 reg; + + spin_lock(&udc->lock); + + /* Flush the receieve fifo */ + reg = readl(&udc->regs->ctl); + reg |= AMD_BIT(UDC_DEVCTL_SRX_FLUSH); + writel(reg, &udc->regs->ctl); + + reg = readl(&udc->regs->ctl); + reg &= ~(AMD_BIT(UDC_DEVCTL_SRX_FLUSH)); + writel(reg, &udc->regs->ctl); + dev_dbg(udc->dev, "ep rx queue flushed\n"); + + /* Mask interrupts. Required more so when the + * UDC is connected to a DRD phy. + */ + udc_mask_unused_interrupts(udc); + + /* Disconnect gadget driver */ + if (udc->driver) { + spin_unlock(&udc->lock); + udc->driver->disconnect(&udc->gadget); + spin_lock(&udc->lock); + + /* empty queues */ + for (tmp = 0; tmp < UDC_EP_NUM; tmp++) + empty_req_queue(&udc->ep[tmp]); + } + udc->connected = 0; + + spin_unlock(&udc->lock); + dev_info(udc->dev, "Device disconnected\n"); +} + +void udc_drd_work(struct work_struct *work) +{ + struct udc *udc; + + udc = container_of(to_delayed_work(work), + struct udc, drd_work); + + if (udc->conn_type) { + dev_dbg(udc->dev, "idle -> device\n"); + start_udc(udc); + } else { + dev_dbg(udc->dev, "device -> idle\n"); + stop_udc(udc); + } +} + +static int usbd_connect_notify(struct notifier_block *self, + unsigned long event, void *ptr) +{ + struct udc *udc = container_of(self, struct udc, nb); + + dev_dbg(udc->dev, "%s: event: %lu\n", __func__, event); + + udc->conn_type = event; + + schedule_delayed_work(&udc->drd_work, 0); + + return NOTIFY_OK; +} + +static int udc_plat_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct resource *res; + struct udc *udc; + int ret; + + udc = devm_kzalloc(dev, sizeof(*udc), GFP_KERNEL); + if (!udc) + return -ENOMEM; + + spin_lock_init(&udc->lock); + udc->dev = dev; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + udc->virt_addr = devm_ioremap_resource(dev, res); + if (IS_ERR(udc->regs)) + return PTR_ERR(udc->regs); + + /* udc csr registers base */ + udc->csr = udc->virt_addr + UDC_CSR_ADDR; + + /* dev registers base */ + udc->regs = udc->virt_addr + UDC_DEVCFG_ADDR; + + /* ep registers base */ + udc->ep_regs = udc->virt_addr + UDC_EPREGS_ADDR; + + /* fifo's base */ + udc->rxfifo = (u32 __iomem *)(udc->virt_addr + UDC_RXFIFO_ADDR); + udc->txfifo = (u32 __iomem *)(udc->virt_addr + UDC_TXFIFO_ADDR); + + udc->phys_addr = (unsigned long)res->start; + + udc->irq = irq_of_parse_and_map(dev->of_node, 0); + if (udc->irq <= 0) { + dev_err(dev, "Can't parse and map interrupt\n"); + return -EINVAL; + } + + udc->udc_phy = devm_of_phy_get_by_index(dev, dev->of_node, 0); + if (IS_ERR(udc->udc_phy)) { + dev_err(dev, "Failed to obtain phy from device tree\n"); + return PTR_ERR(udc->udc_phy); + } + + ret = phy_init(udc->udc_phy); + if (ret) { + dev_err(dev, "UDC phy init failed"); + return ret; + } + + ret = phy_power_on(udc->udc_phy); + if (ret) { + dev_err(dev, "UDC phy power on failed"); + phy_exit(udc->udc_phy); + return ret; + } + + /* Register for extcon if supported */ + if (of_get_property(dev->of_node, "extcon", NULL)) { + udc->edev = extcon_get_edev_by_phandle(dev, 0); + if (IS_ERR(udc->edev)) { + if (PTR_ERR(udc->edev) == -EPROBE_DEFER) + return -EPROBE_DEFER; + dev_err(dev, "Invalid or missing extcon\n"); + ret = PTR_ERR(udc->edev); + goto exit_phy; + } + + udc->nb.notifier_call = usbd_connect_notify; + ret = extcon_register_notifier(udc->edev, EXTCON_USB, + &udc->nb); + if (ret < 0) { + dev_err(dev, "Can't register extcon device\n"); + goto exit_phy; + } + + ret = extcon_get_cable_state_(udc->edev, EXTCON_USB); + if (ret < 0) { + dev_err(dev, "Can't get cable state\n"); + goto exit_extcon; + } else if (ret) { + udc->conn_type = ret; + } + INIT_DELAYED_WORK(&udc->drd_work, udc_drd_work); + } + + /* init dma pools */ + if (use_dma) { + ret = init_dma_pools(udc); + if (ret != 0) + goto exit_extcon; + } + + ret = devm_request_irq(dev, udc->irq, udc_irq, IRQF_SHARED, + "snps-udc", udc); + if (ret < 0) { + dev_err(dev, "Request irq %d failed for UDC\n", udc->irq); + goto exit_dma; + } + + platform_set_drvdata(pdev, udc); + udc->chiprev = UDC_BCM_REV; + + if (udc_probe(udc)) { + ret = -ENODEV; + goto exit_dma; + } + dev_info(dev, "Synopsys UDC platform driver probe successful\n"); + + return 0; + +exit_dma: + if (use_dma) + free_dma_pools(udc); +exit_extcon: + if (udc->edev) + extcon_unregister_notifier(udc->edev, EXTCON_USB, &udc->nb); +exit_phy: + if (udc->udc_phy) { + phy_power_off(udc->udc_phy); + phy_exit(udc->udc_phy); + } + return ret; +} + +static int udc_plat_remove(struct platform_device *pdev) +{ + struct udc *dev; + + dev = platform_get_drvdata(pdev); + + usb_del_gadget_udc(&dev->gadget); + /* gadget driver must not be registered */ + if (WARN_ON(dev->driver)) + return 0; + + /* dma pool cleanup */ + free_dma_pools(dev); + + udc_remove(dev); + + platform_set_drvdata(pdev, NULL); + + if (dev->drd_wq) { + flush_workqueue(dev->drd_wq); + destroy_workqueue(dev->drd_wq); + } + + phy_power_off(dev->udc_phy); + phy_exit(dev->udc_phy); + extcon_unregister_notifier(dev->edev, EXTCON_USB, &dev->nb); + + dev_info(&pdev->dev, "Synopsys UDC platform driver removed\n"); + + return 0; +} + +#ifdef CONFIG_PM_SLEEP +static int udc_plat_suspend(struct device *dev) +{ + struct udc *udc; + + udc = dev_get_drvdata(dev); + stop_udc(udc); + + if (extcon_get_cable_state_(udc->edev, EXTCON_USB) > 0) { + dev_dbg(udc->dev, "device -> idle\n"); + stop_udc(udc); + } + phy_power_off(udc->udc_phy); + phy_exit(udc->udc_phy); + + return 0; +} + +static int udc_plat_resume(struct device *dev) +{ + struct udc *udc; + int ret; + + udc = dev_get_drvdata(dev); + + ret = phy_init(udc->udc_phy); + if (ret) { + dev_err(udc->dev, "UDC phy init failure"); + return ret; + } + + ret = phy_power_on(udc->udc_phy); + if (ret) { + dev_err(udc->dev, "UDC phy power on failure"); + phy_exit(udc->udc_phy); + return ret; + } + + if (extcon_get_cable_state_(udc->edev, EXTCON_USB) > 0) { + dev_dbg(udc->dev, "idle -> device\n"); + start_udc(udc); + } + + return 0; +} +static const struct dev_pm_ops udc_plat_pm_ops = { + .suspend = udc_plat_suspend, + .resume = udc_plat_resume, +}; +#endif + +#if defined(CONFIG_OF) +static const struct of_device_id of_udc_match[] = { + { .compatible = "brcm,ns2-udc", }, + { .compatible = "brcm,cygnus-udc", }, + { .compatible = "brcm,iproc-udc", }, + { } +}; +MODULE_DEVICE_TABLE(of, of_udc_match); +#endif + +static struct platform_driver udc_plat_driver = { + .probe = udc_plat_probe, + .remove = udc_plat_remove, + .driver = { + .name = "snps-udc-plat", + .of_match_table = of_match_ptr(of_udc_match), +#ifdef CONFIG_PM_SLEEP + .pm = &udc_plat_pm_ops, +#endif + }, +}; +module_platform_driver(udc_plat_driver); + +MODULE_DESCRIPTION(UDC_MOD_DESCRIPTION); +MODULE_AUTHOR("Broadcom"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/usb/gadget/udc/udc-xilinx.c b/drivers/usb/gadget/udc/udc-xilinx.c index 588e253..de207a9 100644 --- a/drivers/usb/gadget/udc/udc-xilinx.c +++ b/drivers/usb/gadget/udc/udc-xilinx.c @@ -1151,7 +1151,7 @@ static int xudc_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req) break; } if (&req->usb_req != _req) { - spin_unlock_irqrestore(&ep->udc->lock, flags); + spin_unlock_irqrestore(&udc->lock, flags); return -EINVAL; } xudc_done(ep, req, -ECONNRESET); diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig index 3006f56..aff702c 100644 --- a/drivers/usb/phy/Kconfig +++ b/drivers/usb/phy/Kconfig @@ -4,6 +4,7 @@ menu "USB Physical Layer drivers" config USB_PHY + select EXTCON def_bool n # @@ -109,7 +110,7 @@ config OMAP_OTG config TAHVO_USB tristate "Tahvo USB transceiver driver" - depends on MFD_RETU && EXTCON + depends on MFD_RETU depends on USB_GADGET || !USB_GADGET # if USB_GADGET=m, this can't be 'y' select USB_PHY help @@ -141,7 +142,6 @@ config USB_MSM_OTG depends on (USB || USB_GADGET) && (ARCH_QCOM || COMPILE_TEST) depends on USB_GADGET || !USB_GADGET # if USB_GADGET=m, this can't be 'y' depends on RESET_CONTROLLER - depends on EXTCON select USB_PHY help Enable this to support the USB OTG transceiver on Qualcomm chips. It @@ -155,7 +155,7 @@ config USB_MSM_OTG config USB_QCOM_8X16_PHY tristate "Qualcomm APQ8016/MSM8916 on-chip USB PHY controller support" depends on ARCH_QCOM || COMPILE_TEST - depends on RESET_CONTROLLER && EXTCON + depends on RESET_CONTROLLER select USB_PHY select USB_ULPI_VIEWPORT help diff --git a/drivers/usb/phy/phy-msm-usb.c b/drivers/usb/phy/phy-msm-usb.c index 93d9aaa..8fb86a5 100644 --- a/drivers/usb/phy/phy-msm-usb.c +++ b/drivers/usb/phy/phy-msm-usb.c @@ -146,17 +146,6 @@ struct msm_otg_platform_data { }; /** - * struct msm_usb_cable - structure for exteternal connector cable - * state tracking - * @nb: hold event notification callback - * @conn: used for notification registration - */ -struct msm_usb_cable { - struct notifier_block nb; - struct extcon_dev *extcon; -}; - -/** * struct msm_otg: OTG driver data. Shared by HCD and DCD. * @otg: USB OTG Transceiver structure. * @pdata: otg device platform data. @@ -215,9 +204,6 @@ struct msm_otg { bool manual_pullup; - struct msm_usb_cable vbus; - struct msm_usb_cable id; - struct gpio_desc *switch_gpio; struct notifier_block reboot; }; @@ -1612,8 +1598,8 @@ MODULE_DEVICE_TABLE(of, msm_otg_dt_match); static int msm_otg_vbus_notifier(struct notifier_block *nb, unsigned long event, void *ptr) { - struct msm_usb_cable *vbus = container_of(nb, struct msm_usb_cable, nb); - struct msm_otg *motg = container_of(vbus, struct msm_otg, vbus); + struct usb_phy *usb_phy = container_of(nb, struct usb_phy, vbus_nb); + struct msm_otg *motg = container_of(usb_phy, struct msm_otg, phy); if (event) set_bit(B_SESS_VLD, &motg->inputs); @@ -1636,8 +1622,8 @@ static int msm_otg_vbus_notifier(struct notifier_block *nb, unsigned long event, static int msm_otg_id_notifier(struct notifier_block *nb, unsigned long event, void *ptr) { - struct msm_usb_cable *id = container_of(nb, struct msm_usb_cable, nb); - struct msm_otg *motg = container_of(id, struct msm_otg, id); + struct usb_phy *usb_phy = container_of(nb, struct usb_phy, id_nb); + struct msm_otg *motg = container_of(usb_phy, struct msm_otg, phy); if (event) clear_bit(ID, &motg->inputs); @@ -1652,7 +1638,6 @@ static int msm_otg_id_notifier(struct notifier_block *nb, unsigned long event, static int msm_otg_read_dt(struct platform_device *pdev, struct msm_otg *motg) { struct msm_otg_platform_data *pdata; - struct extcon_dev *ext_id, *ext_vbus; struct device_node *node = pdev->dev.of_node; struct property *prop; int len, ret, words; @@ -1708,54 +1693,6 @@ static int msm_otg_read_dt(struct platform_device *pdev, struct msm_otg *motg) if (IS_ERR(motg->switch_gpio)) return PTR_ERR(motg->switch_gpio); - ext_id = ERR_PTR(-ENODEV); - ext_vbus = ERR_PTR(-ENODEV); - if (of_property_read_bool(node, "extcon")) { - - /* Each one of them is not mandatory */ - ext_vbus = extcon_get_edev_by_phandle(&pdev->dev, 0); - if (IS_ERR(ext_vbus) && PTR_ERR(ext_vbus) != -ENODEV) - return PTR_ERR(ext_vbus); - - ext_id = extcon_get_edev_by_phandle(&pdev->dev, 1); - if (IS_ERR(ext_id) && PTR_ERR(ext_id) != -ENODEV) - return PTR_ERR(ext_id); - } - - if (!IS_ERR(ext_vbus)) { - motg->vbus.extcon = ext_vbus; - motg->vbus.nb.notifier_call = msm_otg_vbus_notifier; - ret = devm_extcon_register_notifier(&pdev->dev, ext_vbus, - EXTCON_USB, &motg->vbus.nb); - if (ret < 0) { - dev_err(&pdev->dev, "register VBUS notifier failed\n"); - return ret; - } - - ret = extcon_get_state(ext_vbus, EXTCON_USB); - if (ret) - set_bit(B_SESS_VLD, &motg->inputs); - else - clear_bit(B_SESS_VLD, &motg->inputs); - } - - if (!IS_ERR(ext_id)) { - motg->id.extcon = ext_id; - motg->id.nb.notifier_call = msm_otg_id_notifier; - ret = devm_extcon_register_notifier(&pdev->dev, ext_id, - EXTCON_USB_HOST, &motg->id.nb); - if (ret < 0) { - dev_err(&pdev->dev, "register ID notifier failed\n"); - return ret; - } - - ret = extcon_get_state(ext_id, EXTCON_USB_HOST); - if (ret) - clear_bit(ID, &motg->inputs); - else - set_bit(ID, &motg->inputs); - } - prop = of_find_property(node, "qcom,phy-init-sequence", &len); if (!prop || !len) return 0; @@ -1932,6 +1869,8 @@ static int msm_otg_probe(struct platform_device *pdev) phy->init = msm_phy_init; phy->notify_disconnect = msm_phy_notify_disconnect; phy->type = USB_PHY_TYPE_USB2; + phy->vbus_nb.notifier_call = msm_otg_vbus_notifier; + phy->id_nb.notifier_call = msm_otg_id_notifier; phy->io_ops = &msm_otg_io_ops; @@ -1947,6 +1886,18 @@ static int msm_otg_probe(struct platform_device *pdev) goto disable_ldo; } + ret = extcon_get_state(phy->edev, EXTCON_USB); + if (ret) + set_bit(B_SESS_VLD, &motg->inputs); + else + clear_bit(B_SESS_VLD, &motg->inputs); + + ret = extcon_get_state(phy->id_edev, EXTCON_USB_HOST); + if (ret) + clear_bit(ID, &motg->inputs); + else + set_bit(ID, &motg->inputs); + platform_set_drvdata(pdev, motg); device_init_wakeup(&pdev->dev, 1); diff --git a/drivers/usb/phy/phy-qcom-8x16-usb.c b/drivers/usb/phy/phy-qcom-8x16-usb.c index fdf6863..b6a83a5 100644 --- a/drivers/usb/phy/phy-qcom-8x16-usb.c +++ b/drivers/usb/phy/phy-qcom-8x16-usb.c @@ -69,9 +69,6 @@ struct phy_8x16 { struct reset_control *phy_reset; - struct extcon_dev *vbus_edev; - struct notifier_block vbus_notify; - struct gpio_desc *switch_gpio; struct notifier_block reboot_notify; }; @@ -131,7 +128,8 @@ static int phy_8x16_vbus_off(struct phy_8x16 *qphy) static int phy_8x16_vbus_notify(struct notifier_block *nb, unsigned long event, void *ptr) { - struct phy_8x16 *qphy = container_of(nb, struct phy_8x16, vbus_notify); + struct usb_phy *usb_phy = container_of(nb, struct usb_phy, vbus_nb); + struct phy_8x16 *qphy = container_of(usb_phy, struct phy_8x16, phy); if (event) phy_8x16_vbus_on(qphy); @@ -187,7 +185,7 @@ static int phy_8x16_init(struct usb_phy *phy) val = ULPI_PWR_OTG_COMP_DISABLE; usb_phy_io_write(phy, val, ULPI_SET(ULPI_PWR_CLK_MNG_REG)); - state = extcon_get_state(qphy->vbus_edev, EXTCON_USB); + state = extcon_get_state(qphy->phy.edev, EXTCON_USB); if (state) phy_8x16_vbus_on(qphy); else @@ -289,15 +287,13 @@ static int phy_8x16_probe(struct platform_device *pdev) phy->io_priv = qphy->regs + HSPHY_ULPI_VIEWPORT; phy->io_ops = &ulpi_viewport_access_ops; phy->type = USB_PHY_TYPE_USB2; + phy->vbus_nb.notifier_call = phy_8x16_vbus_notify; + phy->id_nb.notifier_call = NULL; ret = phy_8x16_read_devicetree(qphy); if (ret < 0) return ret; - qphy->vbus_edev = extcon_get_edev_by_phandle(phy->dev, 0); - if (IS_ERR(qphy->vbus_edev)) - return PTR_ERR(qphy->vbus_edev); - ret = clk_set_rate(qphy->core_clk, INT_MAX); if (ret < 0) dev_dbg(phy->dev, "Can't boost core clock\n"); @@ -315,12 +311,6 @@ static int phy_8x16_probe(struct platform_device *pdev) if (WARN_ON(ret)) goto off_clks; - qphy->vbus_notify.notifier_call = phy_8x16_vbus_notify; - ret = devm_extcon_register_notifier(&pdev->dev, qphy->vbus_edev, - EXTCON_USB, &qphy->vbus_notify); - if (ret < 0) - goto off_power; - ret = usb_add_phy_dev(&qphy->phy); if (ret) goto off_power; diff --git a/drivers/usb/phy/phy.c b/drivers/usb/phy/phy.c index 98f75d28..032f5af 100644 --- a/drivers/usb/phy/phy.c +++ b/drivers/usb/phy/phy.c @@ -100,6 +100,54 @@ static int devm_usb_phy_match(struct device *dev, void *res, void *match_data) return *phy == match_data; } +static int usb_add_extcon(struct usb_phy *x) +{ + int ret; + + if (of_property_read_bool(x->dev->of_node, "extcon")) { + x->edev = extcon_get_edev_by_phandle(x->dev, 0); + if (IS_ERR(x->edev)) + return PTR_ERR(x->edev); + + x->id_edev = extcon_get_edev_by_phandle(x->dev, 1); + if (IS_ERR(x->id_edev)) { + x->id_edev = NULL; + dev_info(x->dev, "No separate ID extcon device\n"); + } + + if (x->vbus_nb.notifier_call) { + ret = devm_extcon_register_notifier(x->dev, x->edev, + EXTCON_USB, + &x->vbus_nb); + if (ret < 0) { + dev_err(x->dev, + "register VBUS notifier failed\n"); + return ret; + } + } + + if (x->id_nb.notifier_call) { + struct extcon_dev *id_ext; + + if (x->id_edev) + id_ext = x->id_edev; + else + id_ext = x->edev; + + ret = devm_extcon_register_notifier(x->dev, id_ext, + EXTCON_USB_HOST, + &x->id_nb); + if (ret < 0) { + dev_err(x->dev, + "register ID notifier failed\n"); + return ret; + } + } + } + + return 0; +} + /** * devm_usb_get_phy - find the USB PHY * @dev - device that requests this phy @@ -388,6 +436,10 @@ int usb_add_phy(struct usb_phy *x, enum usb_phy_type type) return -EINVAL; } + ret = usb_add_extcon(x); + if (ret) + return ret; + ATOMIC_INIT_NOTIFIER_HEAD(&x->notifier); spin_lock_irqsave(&phy_lock, flags); @@ -422,12 +474,17 @@ int usb_add_phy_dev(struct usb_phy *x) { struct usb_phy_bind *phy_bind; unsigned long flags; + int ret; if (!x->dev) { dev_err(x->dev, "no device provided for PHY\n"); return -EINVAL; } + ret = usb_add_extcon(x); + if (ret) + return ret; + ATOMIC_INIT_NOTIFIER_HEAD(&x->notifier); spin_lock_irqsave(&phy_lock, flags); |
