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Code Issues Releases Wiki Activity

usb: dwc2: Update dwc2_handle_usb_suspend_intr function.

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To avoid working in two modes (partial power down
and hibernation) changed conditions for entering
partial power down or hibernation.

Instead of checking hw_params.power_optimized and
hw_params.hibernation now checking power_down
param which already set to one of the options
(Hibernation or Partial Power Down) based on
OTG_EN_PWROPT.

Acked-by: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com>
Signed-off-by: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
Link: https://lore.kernel.org/r/20210416124835.9F257A005D@mailhost.synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Artur Petrosyan 2021-04-16 16:48:34 +04:00 committed by Greg Kroah-Hartman
parent a94f01814b
commit 0112b7ce68
1 changed files with 7 additions and 5 deletions
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12
drivers/usb/dwc2/core_intr.c
View file

@ -532,7 +532,8 @@ static void dwc2_handle_usb_suspend_intr(struct dwc2_hsotg *hsotg)
return;
}
if (dsts & DSTS_SUSPSTS) {
if (hsotg->hw_params.power_optimized) {
switch (hsotg->params.power_down) {
case DWC2_POWER_DOWN_PARAM_PARTIAL:
ret = dwc2_enter_partial_power_down(hsotg);
if (ret) {
if (ret != -ENOTSUPP)
@ -541,21 +542,22 @@ static void dwc2_handle_usb_suspend_intr(struct dwc2_hsotg *hsotg)
__func__);
goto skip_power_saving;
}
udelay(100);
/* Ask phy to be suspended */
if (!IS_ERR_OR_NULL(hsotg->uphy))
usb_phy_set_suspend(hsotg->uphy, true);
} else if (hsotg->hw_params.hibernation) {
break;
case DWC2_POWER_DOWN_PARAM_HIBERNATION:
ret = dwc2_enter_hibernation(hsotg, 0);
if (ret && ret != -ENOTSUPP)
dev_err(hsotg->dev,
"%s: enter hibernation failed\n",
__func__);
} else {
break;
case DWC2_POWER_DOWN_PARAM_NONE:
/*
* If not hibernation nor partial power down are supported,
* If neither hibernation nor partial power down are supported,
* clock gating is used to save power.
*/
dwc2_gadget_enter_clock_gating(hsotg);