[media] em28xx: add support for GPO controlled analog capturing LEDs

Some devices are equipped with a capturing status LED that needs to be
switched on/off explicitly via a GPO port.

Signed-off-by: Frank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/media/usb/em28xx/em28xx.h b/drivers/media/usb/em28xx/em28xx.h
index f8726ad5d0a8..8003c2f7bb96 100644
--- a/drivers/media/usb/em28xx/em28xx.h
+++ b/drivers/media/usb/em28xx/em28xx.h
@@ -374,6 +374,12 @@ enum em28xx_adecoder {
         EM28XX_TVAUDIO,
 };
 
+struct em28xx_led {
+        u8 gpio_reg;
+        u8 gpio_mask;
+        bool inverted;
+};
+
 struct em28xx_board {
         char *name;
         int vchannels;
@@ -410,6 +416,9 @@ struct em28xx_board {
         struct em28xx_input       input[MAX_EM28XX_INPUT];
         struct em28xx_input       radio;
         char                      *ir_codes;
+
+        /* LEDs that need to be controlled explicitly */
+        struct em28xx_led         *analog_capturing_led;
 };
 
 struct em28xx_eeprom {