diff options
author | Peter Chen <peter.chen@freescale.com> | 2013-08-14 12:44:07 +0300 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-08-14 12:37:19 -0700 |
commit | 3f124d233e97db96d9471d1fb346335d43d8650d (patch) | |
tree | b2953e4a35c6b6574641c9b5ab1a3d9c07d9a651 /drivers/usb | |
parent | c10b4f033e7c0ddba2b7b699d01109e4de46e831 (diff) | |
download | op-kernel-dev-3f124d233e97db96d9471d1fb346335d43d8650d.zip op-kernel-dev-3f124d233e97db96d9471d1fb346335d43d8650d.tar.gz |
usb: chipidea: add role init and destroy APIs
- The role's init will be called at probe procedure.
- The role's destroy will be called at fail patch
at probe and driver's removal.
- The role's start/stop will be called when specific
role has started.
Tested-by: Marek Vasut <marex@denx.de>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb')
-rw-r--r-- | drivers/usb/chipidea/core.c | 10 | ||||
-rw-r--r-- | drivers/usb/chipidea/host.c | 7 | ||||
-rw-r--r-- | drivers/usb/chipidea/host.h | 6 | ||||
-rw-r--r-- | drivers/usb/chipidea/udc.c | 36 | ||||
-rw-r--r-- | drivers/usb/chipidea/udc.h | 6 |
5 files changed, 54 insertions, 11 deletions
diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c index 2f70080..75afc52 100644 --- a/drivers/usb/chipidea/core.c +++ b/drivers/usb/chipidea/core.c @@ -420,6 +420,12 @@ void ci_hdrc_remove_device(struct platform_device *pdev) } EXPORT_SYMBOL_GPL(ci_hdrc_remove_device); +static inline void ci_role_destroy(struct ci_hdrc *ci) +{ + ci_hdrc_gadget_destroy(ci); + ci_hdrc_host_destroy(ci); +} + static int ci_hdrc_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -537,7 +543,7 @@ static int ci_hdrc_probe(struct platform_device *pdev) free_irq(ci->irq, ci); stop: - ci_role_stop(ci); + ci_role_destroy(ci); rm_wq: flush_workqueue(ci->wq); destroy_workqueue(ci->wq); @@ -553,7 +559,7 @@ static int ci_hdrc_remove(struct platform_device *pdev) flush_workqueue(ci->wq); destroy_workqueue(ci->wq); free_irq(ci->irq, ci); - ci_role_stop(ci); + ci_role_destroy(ci); return 0; } diff --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c index 8cf8d28..6f96795 100644 --- a/drivers/usb/chipidea/host.c +++ b/drivers/usb/chipidea/host.c @@ -106,6 +106,13 @@ static void host_stop(struct ci_hdrc *ci) regulator_disable(ci->platdata->reg_vbus); } + +void ci_hdrc_host_destroy(struct ci_hdrc *ci) +{ + if (ci->role == CI_ROLE_HOST) + host_stop(ci); +} + int ci_hdrc_host_init(struct ci_hdrc *ci) { struct ci_role_driver *rdrv; diff --git a/drivers/usb/chipidea/host.h b/drivers/usb/chipidea/host.h index 058875c..5707bf3 100644 --- a/drivers/usb/chipidea/host.h +++ b/drivers/usb/chipidea/host.h @@ -4,6 +4,7 @@ #ifdef CONFIG_USB_CHIPIDEA_HOST int ci_hdrc_host_init(struct ci_hdrc *ci); +void ci_hdrc_host_destroy(struct ci_hdrc *ci); #else @@ -12,6 +13,11 @@ static inline int ci_hdrc_host_init(struct ci_hdrc *ci) return -ENXIO; } +static inline void ci_hdrc_host_destroy(struct ci_hdrc *ci) +{ + +} + #endif #endif /* __DRIVERS_USB_CHIPIDEA_HOST_H */ diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c index 116c762..24a100d 100644 --- a/drivers/usb/chipidea/udc.c +++ b/drivers/usb/chipidea/udc.c @@ -27,6 +27,7 @@ #include "udc.h" #include "bits.h" #include "debug.h" +#include "otg.h" /* control endpoint description */ static const struct usb_endpoint_descriptor @@ -1844,13 +1845,13 @@ free_qh_pool: } /** - * udc_remove: parent remove must call this to remove UDC + * ci_hdrc_gadget_destroy: parent remove must call this to remove UDC * * No interrupts active, the IRQ has been released */ -static void udc_stop(struct ci_hdrc *ci) +void ci_hdrc_gadget_destroy(struct ci_hdrc *ci) { - if (ci == NULL) + if (!ci->roles[CI_ROLE_GADGET]) return; usb_del_gadget_udc(&ci->gadget); @@ -1865,15 +1866,32 @@ static void udc_stop(struct ci_hdrc *ci) if (ci->global_phy) usb_put_phy(ci->transceiver); } - /* my kobject is dynamic, I swear! */ - memset(&ci->gadget, 0, sizeof(ci->gadget)); +} + +static int udc_id_switch_for_device(struct ci_hdrc *ci) +{ + if (ci->is_otg) { + ci_clear_otg_interrupt(ci, OTGSC_BSVIS); + ci_enable_otg_interrupt(ci, OTGSC_BSVIE); + } + + return 0; +} + +static void udc_id_switch_for_host(struct ci_hdrc *ci) +{ + if (ci->is_otg) { + /* host doesn't care B_SESSION_VALID event */ + ci_clear_otg_interrupt(ci, OTGSC_BSVIS); + ci_disable_otg_interrupt(ci, OTGSC_BSVIE); + } } /** * ci_hdrc_gadget_init - initialize device related bits * ci: the controller * - * This function enables the gadget role, if the device is "device capable". + * This function initializes the gadget, if the device is "device capable". */ int ci_hdrc_gadget_init(struct ci_hdrc *ci) { @@ -1886,11 +1904,11 @@ int ci_hdrc_gadget_init(struct ci_hdrc *ci) if (!rdrv) return -ENOMEM; - rdrv->start = udc_start; - rdrv->stop = udc_stop; + rdrv->start = udc_id_switch_for_device; + rdrv->stop = udc_id_switch_for_host; rdrv->irq = udc_irq; rdrv->name = "gadget"; ci->roles[CI_ROLE_GADGET] = rdrv; - return 0; + return udc_start(ci); } diff --git a/drivers/usb/chipidea/udc.h b/drivers/usb/chipidea/udc.h index 455ac21..e66df00 100644 --- a/drivers/usb/chipidea/udc.h +++ b/drivers/usb/chipidea/udc.h @@ -84,6 +84,7 @@ struct ci_hw_req { #ifdef CONFIG_USB_CHIPIDEA_UDC int ci_hdrc_gadget_init(struct ci_hdrc *ci); +void ci_hdrc_gadget_destroy(struct ci_hdrc *ci); #else @@ -92,6 +93,11 @@ static inline int ci_hdrc_gadget_init(struct ci_hdrc *ci) return -ENXIO; } +static inline void ci_hdrc_gadget_destroy(struct ci_hdrc *ci) +{ + +} + #endif #endif /* __DRIVERS_USB_CHIPIDEA_UDC_H */ |