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usb: chipidea: udc: add new API ci_hdrc_gadget_connect

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[ Upstream commit d16ab536aad208421c5ed32cdcb01b5ab6aa1f19 ]

This API is used enable device function, it is called at below
situations:
- VBUS is connected during boots up
- Hot plug occurs during runtime

Signed-off-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Jun Li <jun.li@nxp.com>
Stable-dep-of: b7a62611fab7 ("usb: chipidea: add USB PHY event")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Peter Chen 2019-09-10 10:54:52 +08:00 • committed by Greg Kroah-Hartman
commit 4fbf6bb0f9
1 changed files with 32 additions and 31 deletions
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63
drivers/usb/chipidea/udc.c
View file

@ -1533,6 +1533,33 @@ static const struct usb_ep_ops usb_ep_ops = {
/******************************************************************************
* GADGET block
*****************************************************************************/
/**
* ci_hdrc_gadget_connect: caller makes sure gadget driver is binded
*/
static void ci_hdrc_gadget_connect(struct usb_gadget *_gadget, int is_active)
{
struct ci_hdrc *ci = container_of(_gadget, struct ci_hdrc, gadget);
if (is_active) {
pm_runtime_get_sync(&_gadget->dev);
hw_device_reset(ci);
hw_device_state(ci, ci->ep0out->qh.dma);
usb_gadget_set_state(_gadget, USB_STATE_POWERED);
usb_udc_vbus_handler(_gadget, true);
} else {
usb_udc_vbus_handler(_gadget, false);
if (ci->driver)
ci->driver->disconnect(&ci->gadget);
hw_device_state(ci, 0);
if (ci->platdata->notify_event)
ci->platdata->notify_event(ci,
CI_HDRC_CONTROLLER_STOPPED_EVENT);
_gadget_stop_activity(&ci->gadget);
pm_runtime_put_sync(&_gadget->dev);
usb_gadget_set_state(_gadget, USB_STATE_NOTATTACHED);
}
}
static int ci_udc_vbus_session(struct usb_gadget *_gadget, int is_active)
{
struct ci_hdrc *ci = container_of(_gadget, struct ci_hdrc, gadget);
@ -1549,26 +1576,8 @@ static int ci_udc_vbus_session(struct usb_gadget *_gadget, int is_active)
usb_phy_set_charger_state(ci->usb_phy, is_active ?
USB_CHARGER_PRESENT : USB_CHARGER_ABSENT);
if (gadget_ready) {
if (is_active) {
pm_runtime_get_sync(&_gadget->dev);
hw_device_reset(ci);
hw_device_state(ci, ci->ep0out->qh.dma);
usb_gadget_set_state(_gadget, USB_STATE_POWERED);
usb_udc_vbus_handler(_gadget, true);
} else {
usb_udc_vbus_handler(_gadget, false);
if (ci->driver)
ci->driver->disconnect(&ci->gadget);
hw_device_state(ci, 0);
if (ci->platdata->notify_event)
ci->platdata->notify_event(ci,
CI_HDRC_CONTROLLER_STOPPED_EVENT);
_gadget_stop_activity(&ci->gadget);
pm_runtime_put_sync(&_gadget->dev);
usb_gadget_set_state(_gadget, USB_STATE_NOTATTACHED);
}
}
if (gadget_ready)
ci_hdrc_gadget_connect(_gadget, is_active);
return 0;
}
@ -1794,18 +1803,10 @@ static int ci_udc_start(struct usb_gadget *gadget,
return retval;
}
pm_runtime_get_sync(&ci->gadget.dev);
if (ci->vbus_active) {
hw_device_reset(ci);
} else {
if (ci->vbus_active)
ci_hdrc_gadget_connect(gadget, 1);
else
usb_udc_vbus_handler(&ci->gadget, false);
pm_runtime_put_sync(&ci->gadget.dev);
return retval;
}
retval = hw_device_state(ci, ci->ep0out->qh.dma);
if (retval)
pm_runtime_put_sync(&ci->gadget.dev);
return retval;
}