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jz4740_udc: Implement suspend/resume 

SVN-Revision: 19978
owl
Lars-Peter Clausen 2010-03-04 20:20:54 +00:00
parent 86494323fe
commit 7c966b8a32
1 changed files with 39 additions and 9 deletions
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48
target/linux/xburst/files-2.6.32/drivers/usb/gadget/jz4740_udc.c
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@ -160,11 +160,6 @@
# define DEBUG_SETUP(fmt,args...) do {} while(0) # define DEBUG_SETUP(fmt,args...) do {} while(0)
#endif #endif
static unsigned int udc_debug = 0; /* 0: normal mode, 1: test udc cable type mode */
module_param(udc_debug, int, 0);
MODULE_PARM_DESC(udc_debug, "test udc cable or power type");
static unsigned int use_dma = 0; /* 1: use DMA, 0: use PIO */ static unsigned int use_dma = 0; /* 1: use DMA, 0: use PIO */
module_param(use_dma, int, 0); module_param(use_dma, int, 0);
@ -407,7 +402,7 @@ static void udc_enable(struct jz4740_udc *dev)
* there are no actions on the USB bus. * there are no actions on the USB bus.
* UDC still works during this bit was set. * UDC still works during this bit was set.
*/ */
jz4740_clock_udc_enable_auto_suspend(); jz4740_clock_udc_enable_auto_suspend();
/* Enable the USB PHY */ /* Enable the USB PHY */
clk_enable(dev->clk); clk_enable(dev->clk);
@ -2152,7 +2147,6 @@ static int jz4740_udc_wakeup(struct usb_gadget *_gadget)
static int jz4740_udc_pullup(struct usb_gadget *_gadget, int on) static int jz4740_udc_pullup(struct usb_gadget *_gadget, int on)
{ {
struct jz4740_udc *udc = gadget_to_udc(_gadget); struct jz4740_udc *udc = gadget_to_udc(_gadget);
unsigned long flags; unsigned long flags;
local_irq_save(flags); local_irq_save(flags);
@ -2170,6 +2164,7 @@ static int jz4740_udc_pullup(struct usb_gadget *_gadget, int on)
return 0; return 0;
} }
static const struct usb_gadget_ops jz4740_udc_ops = { static const struct usb_gadget_ops jz4740_udc_ops = {
.get_frame = jz4740_udc_get_frame, .get_frame = jz4740_udc_get_frame,
.wakeup = jz4740_udc_wakeup, .wakeup = jz4740_udc_wakeup,
@ -2381,12 +2376,48 @@ static int jz4740_udc_remove(struct platform_device *pdev)
return 0; return 0;
} }
#ifdef CONFIG_PM
static int jz4740_udc_suspend(struct device *dev)
{
struct jz4740_udc *udc = dev_get_drvdata(dev);
if (udc->state == UDC_STATE_ENABLE)
udc_disable(udc);
return 0;
}
static int jz4740_udc_resume(struct device *dev)
{
struct jz4740_udc *udc = dev_get_drvdata(dev);
if (udc->state == UDC_STATE_ENABLE)
udc_enable(udc);
return 0;
}
static struct dev_pm_ops jz4740_udc_pm_ops = {
.suspend = jz4740_udc_suspend,
.resume = jz4740_udc_resume,
};
#define JZ4740_UDC_PM_OPS (&jz4740_udc_pm_ops)
#else
#define JZ4740_UDC_PM_OPS NULL
#endif
static struct platform_driver udc_driver = { static struct platform_driver udc_driver = {
.probe = jz4740_udc_probe, .probe = jz4740_udc_probe,
.remove = jz4740_udc_remove, .remove = jz4740_udc_remove,
.driver = { .driver = {
.name = "jz-udc", .name = "jz-udc",
.owner = THIS_MODULE, .owner = THIS_MODULE,
.pm = JZ4740_UDC_PM_OPS,
}, },
}; };
@ -2396,13 +2427,12 @@ static int __init udc_init (void)
{ {
return platform_driver_register(&udc_driver); return platform_driver_register(&udc_driver);
} }
module_init(udc_init);
static void __exit udc_exit (void) static void __exit udc_exit (void)
{ {
platform_driver_unregister(&udc_driver); platform_driver_unregister(&udc_driver);
} }
module_init(udc_init);
module_exit(udc_exit); module_exit(udc_exit);
MODULE_DESCRIPTION("JZ4740 USB Device Controller"); MODULE_DESCRIPTION("JZ4740 USB Device Controller");