usb: musb: blackfin: usb dev_pm_ops structure

instead of using musb_platform_suspend_resume,
we can use dev_pm_ops and let platform_device
core handle when to call musb_core's suspend and
glue layer's suspend.

Signed-off-by: Felipe Balbi <balbi@ti.com>

1 files changed, 40 insertions, 24 deletions

diff --git a/drivers/usb/musb/blackfin.c b/drivers/usb/musb/blackfin.c
index 8c9c5fc3a6c..df0e906b185 100644
--- a/drivers/usb/musb/blackfin.c
+++ b/drivers/usb/musb/blackfin.c
@@ -27,6 +27,7 @@ struct bfin_glue {
         struct device           *dev;
         struct platform_device  *musb;
 };
+#define glue_to_musb(g)         platform_get_drvdata(g->musb)
 
 /*
  * Load an endpoint's FIFO
@@ -406,27 +407,6 @@ static int bfin_musb_init(struct musb *musb)
         return 0;
 }
 
-static int bfin_musb_suspend(struct musb *musb)
-{
-        if (is_host_active(musb))
-                /*
-                 * During hibernate gpio_vrsel will change from high to low
-                 * low which will generate wakeup event resume the system
-                 * immediately.  Set it to 0 before hibernate to avoid this
-                 * wakeup event.
-                 */
-                gpio_set_value(musb->config->gpio_vrsel, 0);
-
-        return 0;
-}
-
-static int bfin_musb_resume(struct musb *musb)
-{
-        bfin_musb_reg_init(musb);
-
-        return 0;
-}
-
 static int bfin_musb_exit(struct musb *musb)
 {
         gpio_free(musb->config->gpio_vrsel);
@@ -446,9 +426,6 @@ static const struct musb_platform_ops bfin_ops = {
         .set_mode       = bfin_musb_set_mode,
         .try_idle       = bfin_musb_try_idle,
 
-        .suspend        = bfin_musb_suspend,
-        .resume         = bfin_musb_resume,
-
         .vbus_status    = bfin_musb_vbus_status,
         .set_vbus       = bfin_musb_set_vbus,
 };
@@ -528,10 +505,49 @@ static int __exit bfin_remove(struct platform_device *pdev)
         return 0;
 }
 
+#ifdef CONFIG_PM
+static int bfin_suspend(struct device *dev)
+{
+        struct bfin_glue        *glue = dev_get_drvdata(dev);
+        struct musb             *musb = glue_to_musb(glue);
+
+        if (is_host_active(musb))
+                /*
+                 * During hibernate gpio_vrsel will change from high to low
+                 * low which will generate wakeup event resume the system
+                 * immediately.  Set it to 0 before hibernate to avoid this
+                 * wakeup event.
+                 */
+                gpio_set_value(musb->config->gpio_vrsel, 0);
+
+        return 0;
+}
+
+static int bfin_resume(struct device *dev)
+{
+        struct bfin_glue        *glue = dev_get_drvdata(dev);
+        struct musb             *musb = glue_to_musb(glue);
+
+        bfin_musb_reg_init(musb);
+
+        return 0;
+}
+
+static struct dev_pm_ops bfin_pm_ops = {
+        .suspend        = bfin_suspend,
+        .resume         = bfin_resume,
+};
+
+#define DEV_PM_OPS      &bfin_pm_op,
+#else
+#define DEV_PM_OPS      NULL
+#endif
+
 static struct platform_driver bfin_driver = {
         .remove         = __exit_p(bfin_remove),
         .driver         = {
                 .name   = "musb-bfin",
+                .pm     = DEV_PM_OPS,
         },
 };