Set genpd active wakeup flag for usb gdsc if wakeup capable devices
are connected so that wake up happens without reenumeration.
Signed-off-by: Sandeep Maheswaram <sanm@xxxxxxxxxxxxxx>
---
drivers/usb/dwc3/dwc3-qcom.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c
index b1e9061..b61dc0b 100644
--- a/drivers/usb/dwc3/dwc3-qcom.c
+++ b/drivers/usb/dwc3/dwc3-qcom.c
@@ -17,9 +17,11 @@
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/phy/phy.h>
+#include <linux/pm_domain.h>
#include <linux/usb/of.h>
#include <linux/reset.h>
#include <linux/iopoll.h>
+#include <linux/usb/hcd.h>
#include "core.h"
@@ -354,10 +356,19 @@ static int dwc3_qcom_suspend(struct dwc3_qcom *qcom)
{
u32 val;
int i, ret;
+ struct dwc3 *dwc = platform_get_drvdata(qcom->dwc3);
+ struct usb_hcd *hcd;
+ struct generic_pm_domain *genpd = pd_to_genpd(qcom->dev->pm_domain);
if (qcom->is_suspended)
return 0;
+ if (dwc->xhci) {
+ hcd = platform_get_drvdata(dwc->xhci);
+ if (usb_wakeup_enabled_descendants(hcd->self.root_hub))
+ genpd->flags |= GENPD_FLAG_ACTIVE_WAKEUP;
+ }
+
val = readl(qcom->qscratch_base + PWR_EVNT_IRQ_STAT_REG);
if (!(val & PWR_EVNT_LPM_IN_L2_MASK))
dev_err(qcom->dev, "HS-PHY not in L2\n");
@@ -382,9 +393,15 @@ static int dwc3_qcom_resume(struct dwc3_qcom *qcom)
int ret;
int i;
+ struct dwc3 *dwc = platform_get_drvdata(qcom->dwc3);
+ struct generic_pm_domain *genpd = pd_to_genpd(qcom->dev->pm_domain);
+
if (!qcom->is_suspended)
return 0;
+ if (dwc->xhci)
+ genpd->flags &= ~GENPD_FLAG_ACTIVE_WAKEUP;
+
if (device_may_wakeup(qcom->dev))
dwc3_qcom_disable_interrupts(qcom);
--
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of Code Aurora Forum, hosted by The Linux Foundation
