static int s3c_udc_suspend(struct platform_device *pdev, pm_message_t state)
{
struct s3c_udc *dev = platform_get_drvdata(pdev);
unsigned long flags;
DEBUG_PM("[%s]: System Suspend \n", __func__);
#if NO_USING_USB_SWITCH
DEBUG_PM("[%s]: NO_USING_USB_SWITCH just return\n", __func__);
return 0;
#endif
spin_lock_irqsave(&dev->lock, flags);
//save the state of connection to udc_resume_state
dev->udc_resume_state = dev->udc_state;
dev->udc_resume_speed = dev->gadget.speed;
if (dev->gadget.speed != USB_SPEED_UNKNOWN) {
DEBUG_PM("[%s]: USB enumerated at suspend\n", __func__);
//s3c_udc_soft_disconnect();
s3c_udc_stop_activity(dev, dev->driver);
}
else {
DEBUG_PM("[%s] USB not enumerated at suspend\n", __func__);
DEBUG_PM("[%s] dev->powered [%d] at suspend\n", __func__, dev->powered);
if (dev->powered == 0) {
DEBUG_PM("[%s] skip~~ s3c_udc_power_down() at suspend\n", __func__);
spin_unlock_irqrestore(&dev->lock, flags);
return 0;
}
}
switch(pm_policy)
{
case ALL_POWER_DOWN:
// s3c_udc_stop_activity(dev, dev->driver);
//confirm clk disable
s3c_udc_power_down();
break;
case CLOCK_GATING:
s3c_udc_suspend_clock_gating();
break;
case OPHYPWR_FORCE_SUSPEND:
writel((readl(S3C_USBOTG_PHYPWR)|(1<<FORCE_SUSPEND)), S3C_USBOTG_PHYPWR);
break;
default:
DEBUG_ERROR("[%s]: not proper pm_policy\n", __func__);
}
spin_unlock_irqrestore(&dev->lock, flags);
return 0;
}
static int s3c_udc_suspend(struct platform_device *pdev, pm_message_t state)
{
struct s3c_udc *dev = platform_get_drvdata(pdev);
DEBUG_PM("[%s]: System Suspend \n", __FUNCTION__);
//save the state of connection to udc_resume_state
if (dev->gadget.speed != USB_SPEED_UNKNOWN)
{
dev->udc_resume_state = dev->udc_state;
DEBUG_PM("[%s]: USB connected at suspend\n", __FUNCTION__);
}
else
{
dev->udc_resume_state = dev->udc_state;
DEBUG_PM("[%s]: USB not connected at suspend\n", __FUNCTION__);
}
switch(pm_policy)
{
case ALL_POWER_DOWN:
s3c_udc_soft_disconnect();
stop_activity(dev, dev->driver);
//confirm clk disable
s3c_udc_power_down();
break;
case CLOCK_GATING:
s3c_udc_suspend_clock_gating();
break;
case OPHYPWR_FORCE_SUSPEND:
writel((readl(S3C_USBOTG_PHYPWR)|1), S3C_USBOTG_PHYPWR);
break;
default:
printk("[%s]: not proper pm_policy\n", __FUNCTION__);
}
return 0;
}
