jz4740_udc: Implement suspend/resume

SVN-Revision: 19978

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 881bca7864b7784705e1e913eadc982ccdd7f3f6..8c58494b915c1ec474506a5c0b84611af4ccc028 100644 (file)
--- 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");