diff options
| -rw-r--r-- | drivers/usb/gadget/mv_udc_core.c | 47 |
1 files changed, 36 insertions, 11 deletions
diff --git a/drivers/usb/gadget/mv_udc_core.c b/drivers/usb/gadget/mv_udc_core.c index 77e906556378..143925c6a184 100644 --- a/drivers/usb/gadget/mv_udc_core.c +++ b/drivers/usb/gadget/mv_udc_core.c @@ -2447,7 +2447,30 @@ static int mv_udc_suspend(struct device *_dev) { struct mv_udc *udc = the_controller; - udc_stop(udc); + /* if OTG is enabled, the following will be done in OTG driver*/ + if (udc->transceiver) + return 0; + + if (udc->pdata->vbus && udc->pdata->vbus->poll) + if (udc->pdata->vbus->poll() == VBUS_HIGH) { + dev_info(&udc->dev->dev, "USB cable is connected!\n"); + return -EAGAIN; + } + + /* + * only cable is unplugged, udc can suspend. + * So do not care about clock_gating == 1. + */ + if (!udc->clock_gating) { + udc_stop(udc); + + spin_lock_irq(&udc->lock); + /* stop all usb activities */ + stop_activity(udc, udc->driver); + spin_unlock_irq(&udc->lock); + + mv_udc_disable_internal(udc); + } return 0; } @@ -2457,20 +2480,22 @@ static int mv_udc_resume(struct device *_dev) struct mv_udc *udc = the_controller; int retval; - if (udc->pdata->phy_init) { - retval = udc->pdata->phy_init(udc->phy_regs); - if (retval) { - dev_err(&udc->dev->dev, - "init phy error %d when resume back\n", - retval); + /* if OTG is enabled, the following will be done in OTG driver*/ + if (udc->transceiver) + return 0; + + if (!udc->clock_gating) { + retval = mv_udc_enable_internal(udc); + if (retval) return retval; + + if (udc->driver && udc->softconnect) { + udc_reset(udc); + ep0_reset(udc); + udc_start(udc); } } - udc_reset(udc); - ep0_reset(udc); - udc_start(udc); - return 0; } |