diff options
| author | Felipe Balbi <balbi@ti.com> | 2012-04-30 15:56:33 +0400 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2013-03-18 13:17:01 +0400 |
| commit | 7415f17c9560c923ba61cd330c8dfcd5c3630b80 (patch) | |
| tree | 2e0a39800f50067c6da8ef4723acd3edc0342557 /drivers/usb/dwc3/core.h | |
| parent | 9fcb3bd8d12db29c101d3722d37ddef9d1915317 (diff) | |
| download | linux-7415f17c9560c923ba61cd330c8dfcd5c3630b80.tar.xz | |
usb: dwc3: core: add power management support
Add support for basic power management on
the dwc3 driver. While there is still lots
to improve for full PM support, this minimal
patch will already make sure that we survive
suspend-to-ram and suspend-to-disk without
major issues.
Cc: Vikas C Sajjan <vikas.sajjan@linaro.org>
Tested-by: Vivek Gautam <gautam.vivek@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/dwc3/core.h')
| -rw-r--r-- | drivers/usb/dwc3/core.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 35e4d3c01ed0..52e48e21c82f 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -626,6 +626,8 @@ struct dwc3_scratchpad_array { * @mode: mode of operation * @usb2_phy: pointer to USB2 PHY * @usb3_phy: pointer to USB3 PHY + * @dcfg: saved contents of DCFG register + * @gctl: saved contents of GCTL register * @is_selfpowered: true when we are selfpowered * @three_stage_setup: set if we perform a three phase setup * @ep0_bounced: true when we used bounce buffer @@ -675,6 +677,10 @@ struct dwc3 { void __iomem *regs; size_t regs_size; + /* used for suspend/resume */ + u32 dcfg; + u32 gctl; + u32 num_event_buffers; u32 u1u2; u32 maximum_speed; @@ -885,4 +891,31 @@ static inline void dwc3_gadget_exit(struct dwc3 *dwc) { } #endif +/* power management interface */ +#if !IS_ENABLED(CONFIG_USB_DWC3_HOST) +int dwc3_gadget_prepare(struct dwc3 *dwc); +void dwc3_gadget_complete(struct dwc3 *dwc); +int dwc3_gadget_suspend(struct dwc3 *dwc); +int dwc3_gadget_resume(struct dwc3 *dwc); +#else +static inline int dwc3_gadget_prepare(struct dwc3 *dwc) +{ + return 0; +} + +static inline void dwc3_gadget_complete(struct dwc3 *dwc) +{ +} + +static inline int dwc3_gadget_suspend(struct dwc3 *dwc) +{ + return 0; +} + +static inline int dwc3_gadget_resume(struct dwc3 *dwc) +{ + return 0; +} +#endif /* !IS_ENABLED(CONFIG_USB_DWC3_HOST) */ + #endif /* __DRIVERS_USB_DWC3_CORE_H */ |