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usb: chipidea: udc: update gadget state after bus resume

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Gadget state is set to be suspended when bus suspened, but not updated
after resume, this patch saves the gadget state before suspend and
restores it after resume.

Signed-off-by: Li Jun <jun.li@nxp.com>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
This commit is contained in:
Li Jun 2017-03-07 10:35:01 +08:00 committed by Peter Chen
parent 4495c08e84
commit 4f4555cfe7
2 changed files with 15 additions and 8 deletions
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2
drivers/usb/chipidea/ci.h
View File

@ -177,6 +177,7 @@ struct hw_bank {
* @td_pool: allocation pool for transfer descriptors
* @gadget: device side representation for peripheral controller
* @driver: gadget driver
* @resume_state: save the state of gadget suspend from
* @hw_ep_max: total number of endpoints supported by hardware
* @ci_hw_ep: array of endpoints
* @ep0_dir: ep0 direction
@ -227,6 +228,7 @@ struct ci_hdrc {
struct usb_gadget gadget;
struct usb_gadget_driver *driver;
enum usb_device_state resume_state;
unsigned hw_ep_max;
struct ci_hw_ep ci_hw_ep[ENDPT_MAX];
u32 ep0_dir;

21
drivers/usb/chipidea/udc.c
View File

@ -1845,27 +1845,32 @@ static irqreturn_t udc_irq(struct ci_hdrc *ci)
if (USBi_PCI & intr) {
ci->gadget.speed = hw_port_is_high_speed(ci) ?
USB_SPEED_HIGH : USB_SPEED_FULL;
if (ci->suspended && ci->driver->resume) {
spin_unlock(&ci->lock);
ci->driver->resume(&ci->gadget);
spin_lock(&ci->lock);
if (ci->suspended) {
if (ci->driver->resume) {
spin_unlock(&ci->lock);
ci->driver->resume(&ci->gadget);
spin_lock(&ci->lock);
}
ci->suspended = 0;
usb_gadget_set_state(&ci->gadget,
ci->resume_state);
}
}
if (USBi_UI & intr)
isr_tr_complete_handler(ci);
if (USBi_SLI & intr) {
if ((USBi_SLI & intr) && !(ci->suspended)) {
ci->suspended = 1;
ci->resume_state = ci->gadget.state;
if (ci->gadget.speed != USB_SPEED_UNKNOWN &&
ci->driver->suspend) {
ci->suspended = 1;
spin_unlock(&ci->lock);
ci->driver->suspend(&ci->gadget);
usb_gadget_set_state(&ci->gadget,
USB_STATE_SUSPENDED);
spin_lock(&ci->lock);
}
usb_gadget_set_state(&ci->gadget,
USB_STATE_SUSPENDED);
}
retval = IRQ_HANDLED;
} else {