Added exit from clock gating mode when wakeup interrupt
is detected. To exit from the clock gating
in device mode "dwc2_gadget_exit_clock_gating()"
function is used with rem_wakeup parameter 0. To exit
clock gating in host mode "dwc2_host_exit_clock_gating()"
with rem_wakeup parameter 1.
Signed-off-by: Artur Petrosyan <arthur.petros...@synopsys.com>
Acked-by: Minas Harutyunyan <minas.harutyun...@synopsys.com>
---
drivers/usb/dwc2/core_intr.c | 33 ++++++++++++++++++++++-----------
1 file changed, 22 insertions(+), 11 deletions(-)
diff --git a/drivers/usb/dwc2/core_intr.c b/drivers/usb/dwc2/core_intr.c
index ab7fe303c0f9..c764407e7633 100644
--- a/drivers/usb/dwc2/core_intr.c
+++ b/drivers/usb/dwc2/core_intr.c
@@ -415,17 +415,24 @@ static void dwc2_handle_wakeup_detected_intr(struct
dwc2_hsotg *hsotg)
if (dwc2_is_device_mode(hsotg)) {
dev_dbg(hsotg->dev, "DSTS=0x%0x\n",
dwc2_readl(hsotg, DSTS));
- if (hsotg->lx_state == DWC2_L2 && hsotg->in_ppd) {
- u32 dctl = dwc2_readl(hsotg, DCTL);
- /* Clear Remote Wakeup Signaling */
- dctl &= ~DCTL_RMTWKUPSIG;
- dwc2_writel(hsotg, dctl, DCTL);
- ret = dwc2_exit_partial_power_down(hsotg, 1,
- true);
- if (ret)
- dev_err(hsotg->dev,
- "exit partial_power_down failed\n");
- call_gadget(hsotg, resume);
+ if (hsotg->lx_state == DWC2_L2) {
+ if (hsotg->in_ppd) {
+ u32 dctl = dwc2_readl(hsotg, DCTL);
+ /* Clear Remote Wakeup Signaling */
+ dctl &= ~DCTL_RMTWKUPSIG;
+ dwc2_writel(hsotg, dctl, DCTL);
+ ret = dwc2_exit_partial_power_down(hsotg, 1,
+ true);
+ if (ret)
+ dev_err(hsotg->dev,
+ "exit partial_power_down
failed\n");
+ call_gadget(hsotg, resume);
+ }
+
+ /* Exit gadget mode clock gating. */
+ if (hsotg->params.power_down ==
+ DWC2_POWER_DOWN_PARAM_NONE && hsotg->bus_suspended)
+ dwc2_gadget_exit_clock_gating(hsotg, 0);
} else {
/* Change to L0 state */
hsotg->lx_state = DWC2_L0;
@@ -440,6 +447,10 @@ static void dwc2_handle_wakeup_detected_intr(struct
dwc2_hsotg *hsotg)
"exit partial_power_down
failed\n");
}
+ if (hsotg->params.power_down ==
+ DWC2_POWER_DOWN_PARAM_NONE && hsotg->bus_suspended)
+ dwc2_host_exit_clock_gating(hsotg, 1);
+
/*
* If we've got this quirk then the PHY is stuck upon
* wakeup. Assert reset. This will propagate out and
--
2.25.1
