From 624815ce322dda89714d887c6445dbd6ca45af31 Mon Sep 17 00:00:00 2001 From: Vardan Mikayelyan Date: Fri, 16 Feb 2018 14:10:39 +0400 Subject: [PATCH] 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 Signed-off-by: John Youn Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/core.c | 38 ++++++++++++++++++++++++++++++++++++++ drivers/usb/dwc2/core.h | 3 +++ 2 files changed, 41 insertions(+) diff --git a/drivers/usb/dwc2/core.c b/drivers/usb/dwc2/core.c index 73b05a8ccba1..280ecddf82cb 100644 --- a/drivers/usb/dwc2/core.c +++ b/drivers/usb/dwc2/core.c @@ -449,6 +449,44 @@ static bool dwc2_iddig_filter_enabled(struct dwc2_hsotg *hsotg) } /* + * 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. */ diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index b04c794c6f13..cc7856496a4f 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -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); -- 2.11.0