jz4740_udc: Implement suspend/resume

SVN-Revision: 19978

1 files changed, 39 insertions, 9 deletions

diff --git a/target/linux/xburst/files-2.6.32/drivers/usb/gadget/jz4740_udc.c b/target/linux/xburst/files-2.6.32/drivers/usb/gadget/jz4740_udc.c
index 881bca7..8c58494 100644
--- a/target/linux/xburst/files-2.6.32/drivers/usb/gadget/jz4740_udc.c
+++ b/target/linux/xburst/files-2.6.32/drivers/usb/gadget/jz4740_udc.c
@@ -160,11 +160,6 @@
 # define DEBUG_SETUP(fmt,args...) do {} while(0)
 #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 */
 
 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.
 	 * UDC still works during this bit was set.
 	 */
-	 jz4740_clock_udc_enable_auto_suspend();
+	jz4740_clock_udc_enable_auto_suspend();
 
 	/* Enable the USB PHY */
 	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)
 {
 	struct jz4740_udc *udc = gadget_to_udc(_gadget);
-
 	unsigned long flags;
 
 	local_irq_save(flags);
@@ -2170,6 +2164,7 @@ static int jz4740_udc_pullup(struct usb_gadget *_gadget, int on)
 	return 0;
 }
 
+
 static const struct usb_gadget_ops jz4740_udc_ops = {
 	.get_frame = jz4740_udc_get_frame,
 	.wakeup = jz4740_udc_wakeup,
@@ -2381,12 +2376,48 @@ static int jz4740_udc_remove(struct platform_device *pdev)
 	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 = {
 	.probe		= jz4740_udc_probe,
 	.remove		= jz4740_udc_remove,
 	.driver		= {
 		.name	= "jz-udc",
 		.owner	= THIS_MODULE,
+		.pm		= JZ4740_UDC_PM_OPS,
 	},
 };
 
@@ -2396,13 +2427,12 @@ static int __init udc_init (void)
 {
 	return platform_driver_register(&udc_driver);
 }
+module_init(udc_init);
 
 static void __exit udc_exit (void)
 {
 	platform_driver_unregister(&udc_driver);
 }
-
-module_init(udc_init);
 module_exit(udc_exit);
 
 MODULE_DESCRIPTION("JZ4740 USB Device Controller");