diff options
-rw-r--r-- | arch/avr32/mach-at32ap/at32ap700x.c | 50 | ||||
-rw-r--r-- | drivers/usb/gadget/Kconfig | 4 | ||||
-rw-r--r-- | drivers/usb/gadget/atmel_usba_udc.c | 156 | ||||
-rw-r--r-- | drivers/usb/gadget/atmel_usba_udc.h | 9 | ||||
-rw-r--r-- | include/asm-avr32/arch-at32ap/board.h | 4 | ||||
-rw-r--r-- | include/linux/usb/atmel_usba_udc.h | 22 |
6 files changed, 150 insertions, 95 deletions
diff --git a/arch/avr32/mach-at32ap/at32ap700x.c b/arch/avr32/mach-at32ap/at32ap700x.c index 7678fee..cb47afc 100644 --- a/arch/avr32/mach-at32ap/at32ap700x.c +++ b/arch/avr32/mach-at32ap/at32ap700x.c @@ -11,6 +11,7 @@ #include <linux/platform_device.h> #include <linux/dma-mapping.h> #include <linux/spi/spi.h> +#include <linux/usb/atmel_usba_udc.h> #include <asm/io.h> #include <asm/irq.h> @@ -1351,9 +1352,39 @@ static struct clk usba0_hclk = { .index = 6, }; +#define EP(nam, idx, maxpkt, maxbk, dma, isoc) \ + [idx] = { \ + .name = nam, \ + .index = idx, \ + .fifo_size = maxpkt, \ + .nr_banks = maxbk, \ + .can_dma = dma, \ + .can_isoc = isoc, \ + } + +static struct usba_ep_data at32_usba_ep[] __initdata = { + EP("ep0", 0, 64, 1, 0, 0), + EP("ep1", 1, 512, 2, 1, 1), + EP("ep2", 2, 512, 2, 1, 1), + EP("ep3-int", 3, 64, 3, 1, 0), + EP("ep4-int", 4, 64, 3, 1, 0), + EP("ep5", 5, 1024, 3, 1, 1), + EP("ep6", 6, 1024, 3, 1, 1), +}; + +#undef EP + struct platform_device *__init at32_add_device_usba(unsigned int id, struct usba_platform_data *data) { + /* + * pdata doesn't have room for any endpoints, so we need to + * append room for the ones we need right after it. + */ + struct { + struct usba_platform_data pdata; + struct usba_ep_data ep[7]; + } usba_data; struct platform_device *pdev; if (id != 0) @@ -1367,13 +1398,20 @@ at32_add_device_usba(unsigned int id, struct usba_platform_data *data) ARRAY_SIZE(usba0_resource))) goto out_free_pdev; - if (data) { - if (platform_device_add_data(pdev, data, sizeof(*data))) - goto out_free_pdev; + if (data) + usba_data.pdata.vbus_pin = data->vbus_pin; + else + usba_data.pdata.vbus_pin = -EINVAL; - if (data->vbus_pin != GPIO_PIN_NONE) - at32_select_gpio(data->vbus_pin, 0); - } + data = &usba_data.pdata; + data->num_ep = ARRAY_SIZE(at32_usba_ep); + memcpy(data->ep, at32_usba_ep, sizeof(at32_usba_ep)); + + if (platform_device_add_data(pdev, data, sizeof(usba_data))) + goto out_free_pdev; + + if (data->vbus_pin >= 0) + at32_select_gpio(data->vbus_pin, 0); usba0_pclk.dev = &pdev->dev; usba0_hclk.dev = &pdev->dev; diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig index 6f45dd6..d681bb2 100644 --- a/drivers/usb/gadget/Kconfig +++ b/drivers/usb/gadget/Kconfig @@ -118,10 +118,10 @@ config USB_AMD5536UDC config USB_GADGET_ATMEL_USBA boolean "Atmel USBA" select USB_GADGET_DUALSPEED - depends on AVR32 + depends on AVR32 || ARCH_AT91CAP9 help USBA is the integrated high-speed USB Device controller on - the AT32AP700x processors from Atmel. + the AT32AP700x and AT91CAP9 processors from Atmel. config USB_ATMEL_USBA tristate diff --git a/drivers/usb/gadget/atmel_usba_udc.c b/drivers/usb/gadget/atmel_usba_udc.c index b0db4c3..e756023 100644 --- a/drivers/usb/gadget/atmel_usba_udc.c +++ b/drivers/usb/gadget/atmel_usba_udc.c @@ -18,6 +18,7 @@ #include <linux/platform_device.h> #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> +#include <linux/usb/atmel_usba_udc.h> #include <linux/delay.h> #include <asm/gpio.h> @@ -27,6 +28,7 @@ static struct usba_udc the_udc; +static struct usba_ep *usba_ep; #ifdef CONFIG_USB_GADGET_DEBUG_FS #include <linux/debugfs.h> @@ -324,53 +326,28 @@ static int vbus_is_present(struct usba_udc *udc) return 1; } -static void copy_to_fifo(void __iomem *fifo, const void *buf, int len) +#if defined(CONFIG_AVR32) + +static void toggle_bias(int is_on) { - unsigned long tmp; - - DBG(DBG_FIFO, "copy to FIFO (len %d):\n", len); - for (; len > 0; len -= 4, buf += 4, fifo += 4) { - tmp = *(unsigned long *)buf; - if (len >= 4) { - DBG(DBG_FIFO, " -> %08lx\n", tmp); - __raw_writel(tmp, fifo); - } else { - do { - DBG(DBG_FIFO, " -> %02lx\n", tmp >> 24); - __raw_writeb(tmp >> 24, fifo); - fifo++; - tmp <<= 8; - } while (--len); - break; - } - } } -static void copy_from_fifo(void *buf, void __iomem *fifo, int len) +#elif defined(CONFIG_ARCH_AT91) + +#include <asm/arch/at91_pmc.h> + +static void toggle_bias(int is_on) { - union { - unsigned long *w; - unsigned char *b; - } p; - unsigned long tmp; - - DBG(DBG_FIFO, "copy from FIFO (len %d):\n", len); - for (p.w = buf; len > 0; len -= 4, p.w++, fifo += 4) { - if (len >= 4) { - tmp = __raw_readl(fifo); - *p.w = tmp; - DBG(DBG_FIFO, " -> %08lx\n", tmp); - } else { - do { - tmp = __raw_readb(fifo); - *p.b = tmp; - DBG(DBG_FIFO, " -> %02lx\n", tmp); - fifo++, p.b++; - } while (--len); - } - } + unsigned int uckr = at91_sys_read(AT91_CKGR_UCKR); + + if (is_on) + at91_sys_write(AT91_CKGR_UCKR, uckr | AT91_PMC_BIASEN); + else + at91_sys_write(AT91_CKGR_UCKR, uckr & ~(AT91_PMC_BIASEN)); } +#endif /* CONFIG_ARCH_AT91 */ + static void next_fifo_transaction(struct usba_ep *ep, struct usba_request *req) { unsigned int transaction_len; @@ -387,7 +364,7 @@ static void next_fifo_transaction(struct usba_ep *ep, struct usba_request *req) ep->ep.name, req, transaction_len, req->last_transaction ? ", done" : ""); - copy_to_fifo(ep->fifo, req->req.buf + req->req.actual, transaction_len); + memcpy_toio(ep->fifo, req->req.buf + req->req.actual, transaction_len); usba_ep_writel(ep, SET_STA, USBA_TX_PK_RDY); req->req.actual += transaction_len; } @@ -476,7 +453,7 @@ static void receive_data(struct usba_ep *ep) bytecount = req->req.length - req->req.actual; } - copy_from_fifo(req->req.buf + req->req.actual, + memcpy_fromio(req->req.buf + req->req.actual, ep->fifo, bytecount); req->req.actual += bytecount; @@ -1029,33 +1006,6 @@ static const struct usb_gadget_ops usba_udc_ops = { .set_selfpowered = usba_udc_set_selfpowered, }; -#define EP(nam, idx, maxpkt, maxbk, dma, isoc) \ -{ \ - .ep = { \ - .ops = &usba_ep_ops, \ - .name = nam, \ - .maxpacket = maxpkt, \ - }, \ - .udc = &the_udc, \ - .queue = LIST_HEAD_INIT(usba_ep[idx].queue), \ - .fifo_size = maxpkt, \ - .nr_banks = maxbk, \ - .index = idx, \ - .can_dma = dma, \ - .can_isoc = isoc, \ -} - -static struct usba_ep usba_ep[] = { - EP("ep0", 0, 64, 1, 0, 0), - EP("ep1in-bulk", 1, 512, 2, 1, 1), - EP("ep2out-bulk", 2, 512, 2, 1, 1), - EP("ep3in-int", 3, 64, 3, 1, 0), - EP("ep4out-int", 4, 64, 3, 1, 0), - EP("ep5in-iso", 5, 1024, 3, 1, 1), - EP("ep6out-iso", 6, 1024, 3, 1, 1), -}; -#undef EP - static struct usb_endpoint_descriptor usba_ep0_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -1074,7 +1024,6 @@ static void nop_release(struct device *dev) static struct usba_udc the_udc = { .gadget = { .ops = &usba_udc_ops, - .ep0 = &usba_ep[0].ep, .ep_list = LIST_HEAD_INIT(the_udc.gadget.ep_list), .is_dualspeed = 1, .name = "atmel_usba_udc", @@ -1231,7 +1180,7 @@ static int do_test_mode(struct usba_udc *udc) } else { usba_ep_writel(ep, CTL_ENB, USBA_EPT_ENABLE); usba_writel(udc, TST, USBA_TST_PKT_MODE); - copy_to_fifo(ep->fifo, test_packet_buffer, + memcpy_toio(ep->fifo, test_packet_buffer, sizeof(test_packet_buffer)); usba_ep_writel(ep, SET_STA, USBA_TX_PK_RDY); dev_info(dev, "Entering Test_Packet mode...\n"); @@ -1530,13 +1479,13 @@ restart: DBG(DBG_HW, "Packet length: %u\n", pkt_len); if (pkt_len != sizeof(crq)) { pr_warning("udc: Invalid packet length %u " - "(expected %lu)\n", pkt_len, sizeof(crq)); + "(expected %zu)\n", pkt_len, sizeof(crq)); set_protocol_stall(udc, ep); return; } DBG(DBG_FIFO, "Copying ctrl request from 0x%p:\n", ep->fifo); - copy_from_fifo(crq.data, ep->fifo, sizeof(crq)); + memcpy_fromio(crq.data, ep->fifo, sizeof(crq)); /* Free up one bank in the FIFO so that we can * generate or receive a reply right away. */ @@ -1688,6 +1637,7 @@ static irqreturn_t usba_udc_irq(int irq, void *devid) DBG(DBG_INT, "irq, status=%#08x\n", status); if (status & USBA_DET_SUSPEND) { + toggle_bias(0); usba_writel(udc, INT_CLR, USBA_DET_SUSPEND); DBG(DBG_BUS, "Suspend detected\n"); if (udc->gadget.speed != USB_SPEED_UNKNOWN @@ -1699,6 +1649,7 @@ static irqreturn_t usba_udc_irq(int irq, void *devid) } if (status & USBA_WAKE_UP) { + toggle_bias(1); usba_writel(udc, INT_CLR, USBA_WAKE_UP); DBG(DBG_BUS, "Wake Up CPU detected\n"); } @@ -1792,12 +1743,14 @@ static irqreturn_t usba_vbus_irq(int irq, void *devid) vbus = gpio_get_value(udc->vbus_pin); if (vbus != udc->vbus_prev) { if (vbus) { - usba_writel(udc, CTRL, USBA_EN_USBA); + toggle_bias(1); + usba_writel(udc, CTRL, USBA_ENABLE_MASK); usba_writel(udc, INT_ENB, USBA_END_OF_RESET); } else { udc->gadget.speed = USB_SPEED_UNKNOWN; reset_all_endpoints(udc); - usba_writel(udc, CTRL, 0); + toggle_bias(0); + usba_writel(udc, CTRL, USBA_DISABLE_MASK); spin_unlock(&udc->lock); udc->driver->disconnect(&udc->gadget); spin_lock(&udc->lock); @@ -1850,7 +1803,8 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver) /* If Vbus is present, enable the controller and wait for reset */ spin_lock_irqsave(&udc->lock, flags); if (vbus_is_present(udc) && udc->vbus_prev == 0) { - usba_writel(udc, CTRL, USBA_EN_USBA); + toggle_bias(1); + usba_writel(udc, CTRL, USBA_ENABLE_MASK); usba_writel(udc, INT_ENB, USBA_END_OF_RESET); } spin_unlock_irqrestore(&udc->lock, flags); @@ -1883,7 +1837,8 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver) spin_unlock_irqrestore(&udc->lock, flags); /* This will also disable the DP pullup */ - usba_writel(udc, CTRL, 0); + toggle_bias(0); + usba_writel(udc, CTRL, USBA_DISABLE_MASK); driver->unbind(&udc->gadget); udc->gadget.dev.driver = NULL; @@ -1908,7 +1863,7 @@ static int __init usba_udc_probe(struct platform_device *pdev) regs = platform_get_resource(pdev, IORESOURCE_MEM, CTRL_IOMEM_ID); fifo = platform_get_resource(pdev, IORESOURCE_MEM, FIFO_IOMEM_ID); - if (!regs || !fifo) + if (!regs || !fifo || !pdata) return -ENXIO; irq = platform_get_irq(pdev, 0); @@ -1953,19 +1908,48 @@ static int __init usba_udc_probe(struct platform_device *pdev) /* Make sure we start from a clean slate */ clk_enable(pclk); - usba_writel(udc, CTRL, 0); + toggle_bias(0); + usba_writel(udc, CTRL, USBA_DISABLE_MASK); clk_disable(pclk); + usba_ep = kmalloc(sizeof(struct usba_ep) * pdata->num_ep, + GFP_KERNEL); + if (!usba_ep) + goto err_alloc_ep; + + the_udc.gadget.ep0 = &usba_ep[0].ep; + INIT_LIST_HEAD(&usba_ep[0].ep.ep_list); usba_ep[0].ep_regs = udc->regs + USBA_EPT_BASE(0); usba_ep[0].dma_regs = udc->regs + USBA_DMA_BASE(0); usba_ep[0].fifo = udc->fifo + USBA_FIFO_BASE(0); - for (i = 1; i < ARRAY_SIZE(usba_ep); i++) { + usba_ep[0].ep.ops = &usba_ep_ops; + usba_ep[0].ep.name = pdata->ep[0].name; + usba_ep[0].ep.maxpacket = pdata->ep[0].fifo_size; + usba_ep[0].udc = &the_udc; + INIT_LIST_HEAD(&usba_ep[0].queue); + usba_ep[0].fifo_size = pdata->ep[0].fifo_size; + usba_ep[0].nr_banks = pdata->ep[0].nr_banks; + usba_ep[0].index = pdata->ep[0].index; + usba_ep[0].can_dma = pdata->ep[0].can_dma; + usba_ep[0].can_isoc = pdata->ep[0].can_isoc; + + for (i = 1; i < pdata->num_ep; i++) { struct usba_ep *ep = &usba_ep[i]; ep->ep_regs = udc->regs + USBA_EPT_BASE(i); ep->dma_regs = udc->regs + USBA_DMA_BASE(i); ep->fifo = udc->fifo + USBA_FIFO_BASE(i); + ep->ep.ops = &usba_ep_ops; + ep->ep.name = pdata->ep[i].name; + ep->ep.maxpacket = pdata->ep[i].fifo_size; + ep->udc = &the_udc; + INIT_LIST_HEAD(&ep->queue); + ep->fifo_size = pdata->ep[i].fifo_size; + ep->nr_banks = pdata->ep[i].nr_banks; + ep->index = pdata->ep[i].index; + ep->can_dma = pdata->ep[i].can_dma; + ep->can_isoc = pdata->ep[i].can_isoc; list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list); } @@ -1984,7 +1968,7 @@ static int __init usba_udc_probe(struct platform_device *pdev) goto err_device_add; } - if (pdata && pdata->vbus_pin != GPIO_PIN_NONE) { + if (pdata->vbus_pin >= 0) { if (!gpio_request(pdata->vbus_pin, "atmel_usba_udc")) { udc->vbus_pin = pdata->vbus_pin; @@ -2004,7 +1988,7 @@ static int __init usba_udc_probe(struct platform_device *pdev) } usba_init_debugfs(udc); - for (i = 1; i < ARRAY_SIZE(usba_ep); i++) + for (i = 1; i < pdata->num_ep; i++) usba_ep_init_debugfs(udc, &usba_ep[i]); return 0; @@ -2012,6 +1996,8 @@ static int __init usba_udc_probe(struct platform_device *pdev) err_device_add: free_irq(irq, udc); err_request_irq: + kfree(usba_ep); +err_alloc_ep: iounmap(udc->fifo); err_map_fifo: iounmap(udc->regs); @@ -2029,10 +2015,11 @@ static int __exit usba_udc_remove(struct platform_device *pdev) { struct usba_udc *udc; int i; + struct usba_platform_data *pdata = pdev->dev.platform_data; udc = platform_get_drvdata(pdev); - for (i = 1; i < ARRAY_SIZE(usba_ep); i++) + for (i = 1; i < pdata->num_ep; i++) usba_ep_cleanup_debugfs(&usba_ep[i]); usba_cleanup_debugfs(udc); @@ -2040,6 +2027,7 @@ static int __exit usba_udc_remove(struct platform_device *pdev) gpio_free(udc->vbus_pin); free_irq(udc->irq, udc); + kfree(usba_ep); iounmap(udc->fifo); iounmap(udc->regs); clk_put(udc->hclk); diff --git a/drivers/usb/gadget/atmel_usba_udc.h b/drivers/usb/gadget/atmel_usba_udc.h index 08bf6f9..f7baea3 100644 --- a/drivers/usb/gadget/atmel_usba_udc.h +++ b/drivers/usb/gadget/atmel_usba_udc.h @@ -41,6 +41,15 @@ #define USBA_EN_USBA (1 << 8) #define USBA_DETACH (1 << 9) #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 diff --git a/include/asm-avr32/arch-at32ap/board.h b/include/asm-avr32/arch-at32ap/board.h index 7597b0b..3fea200 100644 --- a/include/asm-avr32/arch-at32ap/board.h +++ b/include/asm-avr32/arch-at32ap/board.h @@ -38,9 +38,7 @@ struct platform_device * at32_add_device_lcdc(unsigned int id, struct atmel_lcdfb_info *data, unsigned long fbmem_start, unsigned long fbmem_len); -struct usba_platform_data { - int vbus_pin; -}; +struct usba_platform_data; struct platform_device * at32_add_device_usba(unsigned int id, struct usba_platform_data *data); diff --git a/include/linux/usb/atmel_usba_udc.h b/include/linux/usb/atmel_usba_udc.h new file mode 100644 index 0000000..6311fa2 --- /dev/null +++ b/include/linux/usb/atmel_usba_udc.h @@ -0,0 +1,22 @@ +/* + * Platform data definitions for Atmel USBA gadget driver. + */ +#ifndef __LINUX_USB_USBA_H +#define __LINUX_USB_USBA_H + +struct usba_ep_data { + char *name; + int index; + int fifo_size; + int nr_banks; + int can_dma; + int can_isoc; +}; + +struct usba_platform_data { + int vbus_pin; + int num_ep; + struct usba_ep_data ep[0]; +}; + +#endif /* __LINUX_USB_USBA_H */ |