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usb: dwc3: dwc3-msm-core: Add support for adding xhci quirks to roothub

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Adding support to add xhci quirks while root_hub is enumerating to
psiphon the additional configurations available.

This particular change adds the capability of enabling slow suspend
on targets which might have limitations of responding within the 1 ms
time frame and hence require more time. This change when enables slow
suspend will give the device enough timer to suspend and complete the
handshake properly.

Change-Id: I1fae266a526044ccc8107a9695faa3f1d7abdf8a
Signed-off-by: Udipto Goswami <quic_ugoswami@quicinc.com>
This commit is contained in:
Udipto Goswami 2024-06-18 17:11:55 +05:30
parent 08f3514ce1
commit a40816b4c9
1 changed files with 14 additions and 0 deletions
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14
drivers/usb/dwc3/dwc3-msm-core.c
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@ -580,6 +580,7 @@ struct dwc3_msm {
bool host_poweroff_in_pm_suspend;
bool disable_host_ssphy_powerdown;
bool hibernate_skip_thaw;
bool enable_host_slow_suspend;
unsigned long lpm_flags;
unsigned int vbus_draw;
#define MDWC3_SS_PHY_SUSPEND BIT(0)
@ -6139,6 +6140,8 @@ static int dwc3_msm_parse_params(struct dwc3_msm *mdwc, struct device_node *node
mdwc->hibernate_skip_thaw = of_property_read_bool(node,
"qcom,hibernate-skip-thaw");
mdwc->enable_host_slow_suspend = of_property_read_bool(node,
"qcom,enable_host_slow_suspend");
mdwc->dis_sending_cm_l1_quirk = of_property_read_bool(node,
"qcom,dis-sending-cm-l1-quirk");
@ -6690,6 +6693,17 @@ static int dwc3_msm_host_notifier(struct notifier_block *nb,
struct dwc3 *dwc = platform_get_drvdata(mdwc->dwc3);
struct usb_device *udev = ptr;
if (event == USB_BUS_ADD && mdwc->enable_host_slow_suspend) {
struct usb_bus *ubus = ptr;
struct usb_hcd *hcd = bus_to_hcd(ubus);
struct xhci_hcd *xhci = hcd_to_xhci(hcd);
if (usb_hcd_is_primary_hcd(hcd)) {
dev_dbg(ubus->controller, "enable slow suspend\n");
xhci->quirks |= XHCI_SLOW_SUSPEND;
}
}
if (event != USB_DEVICE_ADD && event != USB_DEVICE_REMOVE)
return NOTIFY_DONE;