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[media] em28xx-audio: add debug info for the volume control 

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Mauro Carvalho Chehab 2011-06-18 11:00:20 -03:00
parent 71d7d83edc
commit 66cb6957d3
1 changed files with 28 additions and 0 deletions
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28
drivers/media/video/em28xx/em28xx-audio.c
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@ -464,6 +464,13 @@ static int em28xx_vol_put(struct snd_kcontrol *kcontrol,
val |= rc & 0x8000; /* Preserve the mute flag */
rc = em28xx_write_ac97(dev, kcontrol->private_value, val);
if (rc < 0)
goto err;
dprintk("%sleft vol %d, right vol %d (0x%04x) to ac97 volume control 0x%04x\n",
(val & 0x8000) ? "muted " : "",
0x1f - ((val >> 8) & 0x1f), 0x1f - (val & 0x1f),
val, (int)kcontrol->private_value);
err:
mutex_unlock(&dev->lock);
@ -482,6 +489,11 @@ static int em28xx_vol_get(struct snd_kcontrol *kcontrol,
if (val < 0)
return val;
dprintk("%sleft vol %d, right vol %d (0x%04x) from ac97 volume control 0x%04x\n",
(val & 0x8000) ? "muted " : "",
0x1f - ((val >> 8) & 0x1f), 0x1f - (val & 0x1f),
val, (int)kcontrol->private_value);
value->value.integer.value[0] = 0x1f - (val & 0x1f);
value->value.integer.value[1] = 0x1f - ((val << 8) & 0x1f);
@ -506,6 +518,13 @@ static int em28xx_vol_put_mute(struct snd_kcontrol *kcontrol,
rc |= 0x8000;
rc = em28xx_write_ac97(dev, kcontrol->private_value, rc);
if (rc < 0)
goto err;
dprintk("%sleft vol %d, right vol %d (0x%04x) to ac97 volume control 0x%04x\n",
(val & 0x8000) ? "muted " : "",
0x1f - ((val >> 8) & 0x1f), 0x1f - (val & 0x1f),
val, (int)kcontrol->private_value);
err:
mutex_unlock(&dev->lock);
@ -529,6 +548,11 @@ static int em28xx_vol_get_mute(struct snd_kcontrol *kcontrol,
else
value->value.integer.value[0] = 1;
dprintk("%sleft vol %d, right vol %d (0x%04x) from ac97 volume control 0x%04x\n",
(val & 0x8000) ? "muted " : "",
0x1f - ((val >> 8) & 0x1f), 0x1f - (val & 0x1f),
val, (int)kcontrol->private_value);
return 0;
}
@ -556,6 +580,8 @@ static int em28xx_cvol_new(struct snd_card *card, struct em28xx *dev,
err = snd_ctl_add(card, kctl);
if (err < 0)
return err;
dprintk("Added control %s for ac97 volume control 0x%04x\n",
ctl_name, id);
memset (&tmp, 0, sizeof(tmp));
tmp.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
@ -572,6 +598,8 @@ static int em28xx_cvol_new(struct snd_card *card, struct em28xx *dev,
err = snd_ctl_add(card, kctl);
if (err < 0)
return err;
dprintk("Added control %s for ac97 volume control 0x%04x\n",
ctl_name, id);
return 0;
}