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| author | Pavankumar Kondeti <pkondeti@codeaurora.org> | 2010-12-07 17:54:04 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-12-10 14:23:34 -0800 |
| commit | c036019ed2b729cb9517806c2b388b4f4323a904 (patch) | |
| tree | f259d74516c3ef37dd00cc36d19cf8792daa374a /drivers/usb/gadget/ci13xxx_udc.c | |
| parent | 33f82f387b9cb27bc903e1368fce88b73213910a (diff) | |
| download | kernel_samsung_smdk4412-c036019ed2b729cb9517806c2b388b4f4323a904.zip kernel_samsung_smdk4412-c036019ed2b729cb9517806c2b388b4f4323a904.tar.gz kernel_samsung_smdk4412-c036019ed2b729cb9517806c2b388b4f4323a904.tar.bz2 | |
USB: gadget: Implement runtime PM for ci13xxx gadget
The actual suspend/resume work is delegated to bus glue driver, which
is responsible for putting hardware in low power mode.
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/gadget/ci13xxx_udc.c')
| -rw-r--r-- | drivers/usb/gadget/ci13xxx_udc.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/usb/gadget/ci13xxx_udc.c b/drivers/usb/gadget/ci13xxx_udc.c index c10d1ae..f200e47 100644 --- a/drivers/usb/gadget/ci13xxx_udc.c +++ b/drivers/usb/gadget/ci13xxx_udc.c @@ -60,6 +60,7 @@ #include <linux/irq.h> #include <linux/kernel.h> #include <linux/slab.h> +#include <linux/pm_runtime.h> #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> #include <linux/usb/otg.h> @@ -2348,6 +2349,7 @@ static int ci13xxx_vbus_session(struct usb_gadget *_gadget, int is_active) if (gadget_ready) { if (is_active) { + pm_runtime_get_sync(&_gadget->dev); hw_device_reset(udc); hw_device_state(udc->ci13xxx_ep[0].qh[RX].dma); } else { @@ -2356,6 +2358,7 @@ static int ci13xxx_vbus_session(struct usb_gadget *_gadget, int is_active) udc->udc_driver->notify_event(udc, CI13XXX_CONTROLLER_STOPPED_EVENT); _gadget_stop_activity(&udc->gadget); + pm_runtime_put_sync(&_gadget->dev); } } @@ -2473,16 +2476,20 @@ int usb_gadget_probe_driver(struct usb_gadget_driver *driver, goto done; } + pm_runtime_get_sync(&udc->gadget.dev); if (udc->udc_driver->flags & CI13XXX_PULLUP_ON_VBUS) { if (udc->vbus_active) { if (udc->udc_driver->flags & CI13XXX_REGS_SHARED) hw_device_reset(udc); } else { + pm_runtime_put_sync(&udc->gadget.dev); goto done; } } retval = hw_device_state(udc->ci13xxx_ep[0].qh[RX].dma); + if (retval) + pm_runtime_put_sync(&udc->gadget.dev); done: spin_unlock_irqrestore(udc->lock, flags); @@ -2522,6 +2529,7 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver) udc->udc_driver->notify_event(udc, CI13XXX_CONTROLLER_STOPPED_EVENT); _gadget_stop_activity(&udc->gadget); + pm_runtime_put(&udc->gadget.dev); } /* unbind gadget */ @@ -2723,6 +2731,8 @@ static int udc_probe(struct ci13xxx_udc_driver *driver, struct device *dev, if (retval) goto remove_dbg; } + pm_runtime_no_callbacks(&udc->gadget.dev); + pm_runtime_enable(&udc->gadget.dev); _udc = udc; return retval; |