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usb: dwc2: Add dwc2_enter_hibernation(), dwc2_exit_hibernation() 

These are wrapper functions which are calling device or host
enter/exit hibernation functions.

Signed-off-by: Vardan Mikayelyan <mvardan@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Grigor Tovmasyan <tovmasya@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Vardan Mikayelyan 2018-02-16 14:10:39 +04:00 committed by Felipe Balbi
parent c5c403dc43
commit 624815ce32
2 changed files with 41 additions and 0 deletions
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38
drivers/usb/dwc2/core.c
View File

@ -448,6 +448,44 @@ static bool dwc2_iddig_filter_enabled(struct dwc2_hsotg *hsotg)
return true;
}
/*
* dwc2_enter_hibernation() - Common function to enter hibernation.
*
* @hsotg: Programming view of the DWC_otg controller
* @is_host: True if core is in host mode.
*
* Return: 0 if successful, negative error code otherwise
*/
int dwc2_enter_hibernation(struct dwc2_hsotg *hsotg, int is_host)
{
if (hsotg->params.power_down != DWC2_POWER_DOWN_PARAM_HIBERNATION)
return -ENOTSUPP;
if (is_host)
return dwc2_host_enter_hibernation(hsotg);
else
return dwc2_gadget_enter_hibernation(hsotg);
}
/*
* dwc2_exit_hibernation() - Common function to exit from hibernation.
*
* @hsotg: Programming view of the DWC_otg controller
* @rem_wakeup: Remote-wakeup, enabled in case of remote-wakeup.
* @reset: Enabled in case of restore with reset.
* @is_host: True if core is in host mode.
*
* Return: 0 if successful, negative error code otherwise
*/
int dwc2_exit_hibernation(struct dwc2_hsotg *hsotg, int rem_wakeup,
int reset, int is_host)
{
if (is_host)
return dwc2_host_exit_hibernation(hsotg, rem_wakeup, reset);
else
return dwc2_gadget_exit_hibernation(hsotg, rem_wakeup, reset);
}
/*
* Do core a soft reset of the core. Be careful with this because it
* resets all the internal state machines of the core.

3
drivers/usb/dwc2/core.h
View File

@ -1134,6 +1134,9 @@ int dwc2_core_reset(struct dwc2_hsotg *hsotg, bool skip_wait);
int dwc2_core_reset_and_force_dr_mode(struct dwc2_hsotg *hsotg);
int dwc2_enter_partial_power_down(struct dwc2_hsotg *hsotg);
int dwc2_exit_partial_power_down(struct dwc2_hsotg *hsotg, bool restore);
int dwc2_enter_hibernation(struct dwc2_hsotg *hsotg, int is_host);
int dwc2_exit_hibernation(struct dwc2_hsotg *hsotg, int rem_wakeup,
int reset, int is_host);
bool dwc2_force_mode_if_needed(struct dwc2_hsotg *hsotg, bool host);
void dwc2_clear_force_mode(struct dwc2_hsotg *hsotg);