diff options
| author | Yunzhi Li <lyz@rock-chips.com> | 2014-12-08 17:46:26 +0800 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2015-01-12 12:13:26 -0600 |
| commit | 135b3c4304dacd8bb01f1aa6fe4165126bee3812 (patch) | |
| tree | 18fe9b680f018c97bca993fd6ffed9f7cecc432c /drivers/usb/dwc2/platform.c | |
| parent | 46919a23ee87bbc4eeb6d958471174e26836f0e1 (diff) | |
| download | linux-stable-135b3c4304dacd8bb01f1aa6fe4165126bee3812.tar.gz linux-stable-135b3c4304dacd8bb01f1aa6fe4165126bee3812.tar.bz2 linux-stable-135b3c4304dacd8bb01f1aa6fe4165126bee3812.zip | |
usb: dwc2: platform: add generic PHY framework support
Get PHY parameters from devicetree and power off usb PHY during
system suspend.
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Yunzhi Li <lyz@rock-chips.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/dwc2/platform.c')
| -rw-r--r-- | drivers/usb/dwc2/platform.c | 36 |
1 files changed, 34 insertions, 2 deletions
diff --git a/drivers/usb/dwc2/platform.c b/drivers/usb/dwc2/platform.c index 6a795aa2ff05..ae095f009b4f 100644 --- a/drivers/usb/dwc2/platform.c +++ b/drivers/usb/dwc2/platform.c @@ -155,6 +155,8 @@ static int dwc2_driver_probe(struct platform_device *dev) struct dwc2_core_params defparams; struct dwc2_hsotg *hsotg; struct resource *res; + struct phy *phy; + struct usb_phy *uphy; int retval; int irq; @@ -212,6 +214,24 @@ static int dwc2_driver_probe(struct platform_device *dev) hsotg->dr_mode = of_usb_get_dr_mode(dev->dev.of_node); + /* + * Attempt to find a generic PHY, then look for an old style + * USB PHY + */ + phy = devm_phy_get(&dev->dev, "usb2-phy"); + if (IS_ERR(phy)) { + hsotg->phy = NULL; + uphy = devm_usb_get_phy(&dev->dev, USB_PHY_TYPE_USB2); + if (IS_ERR(uphy)) + hsotg->uphy = NULL; + else + hsotg->uphy = uphy; + } else { + hsotg->phy = phy; + phy_power_on(hsotg->phy); + phy_init(hsotg->phy); + } + spin_lock_init(&hsotg->lock); mutex_init(&hsotg->init_mutex); retval = dwc2_gadget_init(hsotg, irq); @@ -231,8 +251,15 @@ static int __maybe_unused dwc2_suspend(struct device *dev) struct dwc2_hsotg *dwc2 = dev_get_drvdata(dev); int ret = 0; - if (dwc2_is_device_mode(dwc2)) + if (dwc2_is_device_mode(dwc2)) { ret = s3c_hsotg_suspend(dwc2); + } else { + if (dwc2->lx_state == DWC2_L0) + return 0; + phy_exit(dwc2->phy); + phy_power_off(dwc2->phy); + + } return ret; } @@ -241,8 +268,13 @@ static int __maybe_unused dwc2_resume(struct device *dev) struct dwc2_hsotg *dwc2 = dev_get_drvdata(dev); int ret = 0; - if (dwc2_is_device_mode(dwc2)) + if (dwc2_is_device_mode(dwc2)) { ret = s3c_hsotg_resume(dwc2); + } else { + phy_power_on(dwc2->phy); + phy_init(dwc2->phy); + + } return ret; } |