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USB: dwc_otg_310: hcd: resume rh when handle disconnect or force mode

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If the root hub is in suspend, we need to resume it when handle hcd
disconnect or force device mode,  otherwise the hub driver can't detect
the status change when port disconnect or mode change.
This issue always happens if connect with an usb device which supports
auto-suspend.

Test=Plug in an usb device which supports auto-suspend(such as: hub, usb
camera, etc.). Wait a few seconds until usb enter auto suspend, then
plug out the device or set force device mode, check wheather the device
disconnect from the usb bus or not.

Change-Id: I0f96bba1b9516b264e75d2d829f46fddc193fca7
Signed-off-by: Feng Mingli <fml@rock-chips.com>
Signed-off-by: William Wu <william.wu@rock-chips.com>
This commit is contained in:
Feng Mingli
2015-12-30 09:22:29 +08:00
committed by Tao Huang
parent 39415217b3
commit f0d2f413f9
1 changed files with 10 additions and 0 deletions
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10
drivers/usb/dwc_otg_310/dwc_otg_hcd.c
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@@ -280,6 +280,8 @@ static int32_t dwc_otg_hcd_disconnect_cb(void *p)
{
gintsts_data_t intr;
dwc_otg_hcd_t *dwc_otg_hcd = p;
struct usb_hcd *usb_hcd = dwc_otg_hcd_get_priv_data(dwc_otg_hcd);
struct usb_bus *bus = hcd_to_bus(usb_hcd);
hprt0_data_t hprt0;
dwc_otg_hcd->non_periodic_qh_ptr = &dwc_otg_hcd->non_periodic_sched_active;
@@ -412,6 +414,9 @@ out:
dwc_otg_hcd->fops->disconnect(dwc_otg_hcd);
}
if ((bus->root_hub) && (usb_hcd->state == HC_STATE_SUSPENDED))
usb_hcd_resume_root_hub(usb_hcd);
return 1;
}
@@ -476,6 +481,8 @@ void dwc_otg_hcd_stop(dwc_otg_hcd_t *hcd)
hprt0_data_t hprt0 = {.d32 = 0 };
struct dwc_otg_platform_data *pldata;
dwc_irqflags_t flags;
struct usb_hcd *usb_hcd = dwc_otg_hcd_get_priv_data(hcd);
struct usb_bus *bus = hcd_to_bus(usb_hcd);
pldata = hcd->core_if->otg_dev->pldata;
DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD STOP\n");
@@ -506,6 +513,9 @@ void dwc_otg_hcd_stop(dwc_otg_hcd_t *hcd)
if (pldata->power_enable)
pldata->power_enable(0);
if ((bus->root_hub) && (usb_hcd->state == HC_STATE_SUSPENDED))
usb_hcd_resume_root_hub(usb_hcd);
dwc_mdelay(1);
}