Commit 66cb6957 authored by Mauro Carvalho Chehab's avatar Mauro Carvalho Chehab
Browse files

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



Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 71d7d83e

drivers/media/video/em28xx/em28xx-audio.c

+28 −0
Original line number Diff line number Diff line
@@ -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;

}