diff options
Diffstat (limited to 'linux/drivers/media/video/em28xx/em28xx.h')
| -rw-r--r-- | linux/drivers/media/video/em28xx/em28xx.h | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/linux/drivers/media/video/em28xx/em28xx.h b/linux/drivers/media/video/em28xx/em28xx.h index c3c36d691..fae80c42d 100644 --- a/linux/drivers/media/video/em28xx/em28xx.h +++ b/linux/drivers/media/video/em28xx/em28xx.h @@ -275,9 +275,25 @@ struct em28xx_audio_mode { unsigned int i2s_5rates:1; }; +/* em28xx has two audio inputs: tuner and line in. + However, on most devices, an auxiliary AC97 codec device is used. + The AC97 device may have several different inputs and outputs, + depending on their model. So, it is possible to use AC97 mixer to + address more than two different entries. + */ enum em28xx_amux { - EM28XX_AMUX_VIDEO, - EM28XX_AMUX_LINE_IN, + /* This is the only entry for em28xx tuner input */ + EM28XX_AMUX_VIDEO, /* em28xx tuner, AC97 mixer Video */ + + EM28XX_AMUX_LINE_IN, /* AC97 mixer Line In */ + + /* Some less-common mixer setups */ + EM28XX_AMUX_VIDEO2, /* em28xx Line in, AC97 mixer Video */ + EM28XX_AMUX_PHONE, + EM28XX_AMUX_MIC, + EM28XX_AMUX_CD, + EM28XX_AMUX_AUX, + EM28XX_AMUX_PCM_OUT, }; struct em28xx_input { |