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author | Vardan Mikayelyan <mvardan@synopsys.com> | 2018-02-16 14:10:39 +0400 |
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committer | Felipe Balbi <felipe.balbi@linux.intel.com> | 2018-03-13 10:47:56 +0200 |
commit | 624815ce322dda89714d887c6445dbd6ca45af31 (patch) | |
tree | 5a1d4653bf4fd64a4edc8c6d62d571702879e077 /drivers/usb/dwc2 | |
parent | c5c403dc43365d1669e5a36829356b1bfddbd39e (diff) | |
download | linux-624815ce322dda89714d887c6445dbd6ca45af31.tar.bz2 |
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>
Diffstat (limited to 'drivers/usb/dwc2')
-rw-r--r-- | drivers/usb/dwc2/core.c | 38 | ||||
-rw-r--r-- | drivers/usb/dwc2/core.h | 3 |
2 files changed, 41 insertions, 0 deletions
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); |