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Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/media/video/cx25840/cx25840-core.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/media/video/cx25840/cx25840-core.c b/drivers/media/video/cx25840/cx25840-core.c index 25eb3bec9e5..be467b4b954 100644 --- a/drivers/media/video/cx25840/cx25840-core.c +++ b/drivers/media/video/cx25840/cx25840-core.c @@ -1101,6 +1101,16 @@ static void log_audio_status(struct i2c_client *client) /* ----------------------------------------------------------------------- */ +/* This init operation must be called to load the driver's firmware. + Without this the audio standard detection will fail and you will + only get mono. + + Since loading the firmware is often problematic when the driver is + compiled into the kernel I recommend postponing calling this function + until the first open of the video device. Another reason for + postponing it is that loading this firmware takes a long time (seconds) + due to the slow i2c bus speed. So it will speed up the boot process if + you can avoid loading the fw as long as the video device isn't used. */ static int cx25840_init(struct v4l2_subdev *sd, u32 val) { struct cx25840_state *state = to_state(sd); |