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-rw-r--r--drivers/media/video/cx25840/cx25840-core.c10
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);