V4L/DVB (9628): em28xx: refactor IR support

Refactor the em28xx IR support based on the em2860/em2880 and em2874
datasheets.

Tested on the HVR-950 (em2883), Pinnacle 800e (em2883), Pinnacle 80e (em2874)
using the remote controls that came with those products.

Signed-off-by: Devin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/media/video/em28xx/em28xx-reg.h b/drivers/media/video/em28xx/em28xx-reg.h
index f67955a1b818..b8e97836370f 100644
--- a/drivers/media/video/em28xx/em28xx-reg.h
+++ b/drivers/media/video/em28xx/em28xx-reg.h
@@ -84,9 +84,17 @@
 #define EM28XX_R14_VIDEO_AC97   0x14
 
 /* em2874 registers */
+#define EM2874_R50_IR_CONFIG    0x50
+#define EM2874_R51_IR           0x51
 #define EM2874_R5F_TS_ENABLE    0x5f
 #define EM2874_R80_GPIO         0x80
 
+/* em2874 IR config register (0x50) */
+#define EM2874_IR_NEC           0x00
+#define EM2874_IR_RC5           0x04
+#define EM2874_IR_RC5_MODE_0    0x08
+#define EM2874_IR_RC5_MODE_6A   0x0b
+
 /* em2874 Transport Stream Enable Register (0x5f) */
 #define EM2874_TS1_CAPTURE_ENABLE (1 << 0)
 #define EM2874_TS1_FILTER_ENABLE  (1 << 1)