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V4L/DVB (9622): tvaudio: Improve comments and remove a unneeded prototype 

Some comments are not clear enough. Improve it to allow a better
understanding of the driver behavior.

While there, remove an unneeded struct prototype.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Mauro Carvalho Chehab 2008-11-13 17:25:04 -03:00
parent 494264379d
commit 41f5230f3f
1 changed files with 7 additions and 12 deletions
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19
drivers/media/video/tvaudio.c
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@ -106,7 +106,6 @@ struct CHIPDESC {
int inputmute;
int inputmask;
};
static struct CHIPDESC chiplist[];
/* current state of the chip */
struct CHIPSTATE {
@ -1856,11 +1855,13 @@ static int chip_command(struct i2c_client *client,
case VIDIOC_S_FREQUENCY:
chip->mode = 0; /* automatic */
/* For chips that provide getmode, setmode and checkmode,
a kthread is created to automatically to set the audio
standard. In this case, start with MONO and wait 2 seconds
for the decoding to stablize. Then, run kthread to change
to stereo, if carrier detected.
/* For chips that provide getmode and setmode, and doesn't
automatically follows the stereo carrier, a kthread is
created to set the audio standard. In this case, when then
the video channel is changed, tvaudio starts on MONO mode.
After waiting for 2 seconds, the kernel thread is called,
to follow whatever audio standard is pointed by the
audio carrier.
*/
if (chip->thread) {
desc->setmode(chip,V4L2_TUNER_MODE_MONO);
@ -1905,9 +1906,3 @@ static struct v4l2_i2c_driver_data v4l2_i2c_data = {
.legacy_probe = chip_legacy_probe,
.id_table = chip_id,
};
/*
* Local variables:
* c-basic-offset: 8
* End:
*/