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[media] cx25840 / cx23885: Fixing audio/volume regression

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Since the conversion to subdev in Oct 2010 the audio controls have
not functioned correctly in the cx23885 driver. Passing values of
0-3f did not translate into meaningfull register writes. I've
converted the cx23885 driver to match the cx25840 volume control
definition and now audio is working reliably again.

Signed-off-by: Steven Toth <stoth@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Steven Toth 2012-01-04 10:47:57 -03:00 committed by Mauro Carvalho Chehab
parent c81c0060ac
commit 4c3764d150
2 changed files with 4 additions and 12 deletions
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6
drivers/media/video/cx23885/cx23885-video.c
View File

@ -253,9 +253,9 @@ static struct cx23885_ctrl cx23885_ctls[] = {
.id = V4L2_CID_AUDIO_VOLUME,
.name = "Volume",
.minimum = 0,
.maximum = 0x3f,
.step = 1,
.default_value = 0x3f,
.maximum = 65535,
.step = 65535 / 100,
.default_value = 65535,
.type = V4L2_CTRL_TYPE_INTEGER,
},
.reg = PATH1_VOL_CTL,

10
drivers/media/video/cx25840/cx25840-audio.c
View File

@ -480,7 +480,6 @@ void cx25840_audio_set_path(struct i2c_client *client)
static void set_volume(struct i2c_client *client, int volume)
{
struct cx25840_state *state = to_state(i2c_get_clientdata(client));
int vol;
/* Convert the volume to msp3400 values (0-127) */
@ -496,14 +495,7 @@ static void set_volume(struct i2c_client *client, int volume)
}
/* PATH1_VOLUME */
if (is_cx2388x(state)) {
/* for cx23885 volume doesn't work,
* the calculation always results in
* e4 regardless.
*/
cx25840_write(client, 0x8d4, volume);
} else
cx25840_write(client, 0x8d4, 228 - (vol * 2));
cx25840_write(client, 0x8d4, 228 - (vol * 2));
}
static void set_balance(struct i2c_client *client, int balance)