diff options
| -rw-r--r-- | drivers/media/video/em28xx/em28xx-core.c | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/drivers/media/video/em28xx/em28xx-core.c b/drivers/media/video/em28xx/em28xx-core.c index b7a2fedc390..c8d7ce8fbd3 100644 --- a/drivers/media/video/em28xx/em28xx-core.c +++ b/drivers/media/video/em28xx/em28xx-core.c @@ -500,18 +500,21 @@ int em28xx_audio_setup(struct em28xx *dev) /* See how this device is configured */ cfg = em28xx_read_reg(dev, EM28XX_R00_CHIPCFG); - if (cfg < 0) + em28xx_info("Config register raw data: 0x%02x\n", cfg); + if (cfg < 0) { + /* Register read error? */ cfg = EM28XX_CHIPCFG_AC97; /* Be conservative */ - else - em28xx_info("Config register raw data: 0x%02x\n", cfg); - - if ((cfg & EM28XX_CHIPCFG_AUDIOMASK) == - EM28XX_CHIPCFG_I2S_3_SAMPRATES) { + } else if ((cfg & EM28XX_CHIPCFG_AUDIOMASK) == 0x00) { + /* The device doesn't have vendor audio at all */ + dev->has_alsa_audio = 0; + dev->audio_mode.has_audio = 0; + return 0; + } else if ((cfg & EM28XX_CHIPCFG_AUDIOMASK) == + EM28XX_CHIPCFG_I2S_3_SAMPRATES) { em28xx_info("I2S Audio (3 sample rates)\n"); dev->audio_mode.i2s_3rates = 1; - } - if ((cfg & EM28XX_CHIPCFG_AUDIOMASK) == - EM28XX_CHIPCFG_I2S_5_SAMPRATES) { + } else if ((cfg & EM28XX_CHIPCFG_AUDIOMASK) == + EM28XX_CHIPCFG_I2S_5_SAMPRATES) { em28xx_info("I2S Audio (5 sample rates)\n"); dev->audio_mode.i2s_5rates = 1; } |