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Commit 624815ce authored by Vardan Mikayelyan's avatar Vardan Mikayelyan Committed by Felipe Balbi
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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: default avatarVardan Mikayelyan <mvardan@synopsys.com>
Signed-off-by: default avatarJohn Youn <johnyoun@synopsys.com>
Signed-off-by: default avatarGrigor Tovmasyan <tovmasya@synopsys.com>
Signed-off-by: default avatarFelipe Balbi <felipe.balbi@linux.intel.com>
parent c5c403dc

drivers/usb/dwc2/core.c

+38 −0
Original line number Diff line number Diff line
@@ -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.

drivers/usb/dwc2/core.h

+3 −0
Original line number Diff line number Diff line
@@ -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);