diff options
Diffstat (limited to 'drivers/media/video/cx18/cx18-driver.c')
| -rw-r--r-- | drivers/media/video/cx18/cx18-driver.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/media/video/cx18/cx18-driver.c b/drivers/media/video/cx18/cx18-driver.c index 7e455fdcf77..e161d29beb7 100644 --- a/drivers/media/video/cx18/cx18-driver.c +++ b/drivers/media/video/cx18/cx18-driver.c @@ -1043,8 +1043,21 @@ int cx18_init_on_first_open(struct cx18 *cx) } set_bit(CX18_F_I_LOADED_FW, &cx->i_flags); - /* Init the firmware twice to work around a silicon bug - * transport related. */ + /* + * Init the firmware twice to work around a silicon bug + * with the digital TS. + * + * The second firmware load requires us to normalize the APU state, + * or the audio for the first analog capture will be badly incorrect. + * + * I can't seem to call APU_RESETAI and have it succeed without the + * APU capturing audio, so we start and stop it here to do the reset + */ + + /* MPEG Encoding, 224 kbps, MPEG Layer II, 48 ksps */ + cx18_vapi(cx, CX18_APU_START, 2, CX18_APU_ENCODING_METHOD_MPEG|0xb9, 0); + cx18_vapi(cx, CX18_APU_RESETAI, 0); + cx18_vapi(cx, CX18_APU_STOP, 1, CX18_APU_ENCODING_METHOD_MPEG); fw_retry_count = 3; while (--fw_retry_count > 0) { |