[media] radio-shark2: Add support for suspend & resume

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

3 files changed, 41 insertions, 1 deletions

diff --git a/drivers/media/radio/radio-shark2.c b/drivers/media/radio/radio-shark2.c
index 7c730a0277ab..9740c760b73c 100644
--- a/drivers/media/radio/radio-shark2.c
+++ b/drivers/media/radio/radio-shark2.c
@@ -209,6 +209,7 @@ static int shark_register_leds(struct shark_device *shark, struct device *dev)
 {
         int i, retval;
 
+        atomic_set(&shark->brightness[BLUE_LED], 127);
         INIT_WORK(&shark->led_work, shark_led_work);
         for (i = 0; i < NO_LEDS; i++) {
                 shark->leds[i] = shark_led_templates[i];
@@ -235,6 +236,16 @@ static void shark_unregister_leds(struct shark_device *shark)
 
         cancel_work_sync(&shark->led_work);
 }
+
+static void shark_resume_leds(struct shark_device *shark)
+{
+        int i;
+
+        for (i = 0; i < NO_LEDS; i++)
+                set_bit(i, &shark->brightness_new);
+
+        schedule_work(&shark->led_work);
+}
 #else
 static int shark_register_leds(struct shark_device *shark, struct device *dev)
 {
@@ -243,6 +254,7 @@ static int shark_register_leds(struct shark_device *shark, struct device *dev)
         return 0;
 }
 static inline void shark_unregister_leds(struct shark_device *shark) { }
+static inline void shark_resume_leds(struct shark_device *shark) { }
 #endif
 
 static void usb_shark_disconnect(struct usb_interface *intf)
@@ -327,6 +339,28 @@ err_alloc_buffer:
         return retval;
 }
 
+#ifdef CONFIG_PM
+int usb_shark_suspend(struct usb_interface *intf, pm_message_t message)
+{
+        return 0;
+}
+
+int usb_shark_resume(struct usb_interface *intf)
+{
+        struct v4l2_device *v4l2_dev = usb_get_intfdata(intf);
+        struct shark_device *shark = v4l2_dev_to_shark(v4l2_dev);
+        int ret;
+
+        mutex_lock(&shark->tea.mutex);
+        ret = radio_tea5777_set_freq(&shark->tea);
+        mutex_unlock(&shark->tea.mutex);
+
+        shark_resume_leds(shark);
+
+        return ret;
+}
+#endif
+
 /* Specify the bcdDevice value, as the radioSHARK and radioSHARK2 share ids */
 static struct usb_device_id usb_shark_device_table[] = {
         { .match_flags = USB_DEVICE_ID_MATCH_DEVICE_AND_VERSION |
@@ -346,5 +380,10 @@ static struct usb_driver usb_shark_driver = {
         .probe                  = usb_shark_probe,
         .disconnect             = usb_shark_disconnect,
         .id_table               = usb_shark_device_table,
+#ifdef CONFIG_PM
+        .suspend                = usb_shark_suspend,
+        .resume                 = usb_shark_resume,
+        .reset_resume           = usb_shark_resume,
+#endif
 };
 module_usb_driver(usb_shark_driver);
diff --git a/drivers/media/radio/radio-tea5777.c b/drivers/media/radio/radio-tea5777.c
index 818e57c20086..ef8289829794 100644
--- a/drivers/media/radio/radio-tea5777.c
+++ b/drivers/media/radio/radio-tea5777.c
@@ -184,7 +184,7 @@ static u32 tea5777_freq_to_v4l2_freq(struct radio_tea5777 *tea, u32 freq)
         return 0; /* Never reached */
 }
 
-static int radio_tea5777_set_freq(struct radio_tea5777 *tea)
+int radio_tea5777_set_freq(struct radio_tea5777 *tea)
 {
         u32 freq;
         int res;
diff --git a/drivers/media/radio/radio-tea5777.h b/drivers/media/radio/radio-tea5777.h
index ffbae9ca84eb..4ea43a90a151 100644
--- a/drivers/media/radio/radio-tea5777.h
+++ b/drivers/media/radio/radio-tea5777.h
@@ -85,5 +85,6 @@ struct radio_tea5777 {
 
 int radio_tea5777_init(struct radio_tea5777 *tea, struct module *owner);
 void radio_tea5777_exit(struct radio_tea5777 *tea);
+int radio_tea5777_set_freq(struct radio_tea5777 *tea);
 
 #endif /* __RADIO_TEA5777_H */