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

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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jwrdegoede authored and Mauro Carvalho Chehab committed Aug 11, 2012
1 parent d1f280d commit 559c2009003bb8092e4927a4bac99cbf75834979
Showing with 45 additions and 2 deletions.
  1. +42 −1 drivers/media/radio/radio-shark.c
  2. +1 −0 include/sound/tea575x-tuner.h
  3. +2 −1 sound/i2c/other/tea575x-tuner.c
@@ -59,7 +59,8 @@ MODULE_LICENSE("GPL");
#define v4l2_dev_to_shark(d) container_of(d, struct shark_device, v4l2_dev)
-enum { BLUE_LED, BLUE_PULSE_LED, RED_LED, NO_LEDS };
+/* Note BLUE_IS_PULSE comes after NO_LEDS as it is a status bit, not a LED */
+enum { BLUE_LED, BLUE_PULSE_LED, RED_LED, NO_LEDS, BLUE_IS_PULSE };
struct shark_device {
struct usb_device *usbdev;
@@ -190,6 +191,7 @@ static void shark_led_set_blue(struct led_classdev *led_cdev,
atomic_set(&shark->brightness[BLUE_LED], value);
set_bit(BLUE_LED, &shark->brightness_new);
+ clear_bit(BLUE_IS_PULSE, &shark->brightness_new);
schedule_work(&shark->led_work);
}
@@ -201,6 +203,7 @@ static void shark_led_set_blue_pulse(struct led_classdev *led_cdev,
atomic_set(&shark->brightness[BLUE_PULSE_LED], 256 - value);
set_bit(BLUE_PULSE_LED, &shark->brightness_new);
+ set_bit(BLUE_IS_PULSE, &shark->brightness_new);
schedule_work(&shark->led_work);
}
@@ -240,6 +243,7 @@ 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];
@@ -266,6 +270,16 @@ static void shark_unregister_leds(struct shark_device *shark)
cancel_work_sync(&shark->led_work);
}
+
+static void shark_resume_leds(struct shark_device *shark)
+{
+ if (test_bit(BLUE_IS_PULSE, &shark->brightness_new))
+ set_bit(BLUE_PULSE_LED, &shark->brightness_new);
+ else
+ set_bit(BLUE_LED, &shark->brightness_new);
+ set_bit(RED_LED, &shark->brightness_new);
+ schedule_work(&shark->led_work);
+}
#else
static int shark_register_leds(struct shark_device *shark, struct device *dev)
{
@@ -274,6 +288,7 @@ 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)
@@ -359,6 +374,27 @@ static int usb_shark_probe(struct usb_interface *intf,
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);
+
+ mutex_lock(&shark->tea.mutex);
+ snd_tea575x_set_freq(&shark->tea);
+ mutex_unlock(&shark->tea.mutex);
+
+ shark_resume_leds(shark);
+
+ return 0;
+}
+#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 |
@@ -378,5 +414,10 @@ 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);
@@ -73,5 +73,6 @@ struct snd_tea575x {
int snd_tea575x_init(struct snd_tea575x *tea, struct module *owner);
void snd_tea575x_exit(struct snd_tea575x *tea);
+void snd_tea575x_set_freq(struct snd_tea575x *tea);
#endif /* __SOUND_TEA575X_TUNER_H */
@@ -191,7 +191,7 @@ static u32 snd_tea575x_get_freq(struct snd_tea575x *tea)
return snd_tea575x_val_to_freq(tea, snd_tea575x_read(tea));
}
-static void snd_tea575x_set_freq(struct snd_tea575x *tea)
+void snd_tea575x_set_freq(struct snd_tea575x *tea)
{
u32 freq = tea->freq / 16; /* to kHz */
u32 band = 0;
@@ -571,3 +571,4 @@ module_exit(alsa_tea575x_module_exit)
EXPORT_SYMBOL(snd_tea575x_init);
EXPORT_SYMBOL(snd_tea575x_exit);
+EXPORT_SYMBOL(snd_tea575x_set_freq);

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