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[ALSA] ASoC: Add SOC_DOUBLE_S8_TLV control type

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The SOC_DOUBLE_S8_TLV control type was originally implemented in the
UDA1380 driver by Philipp Zabel and was moved into the core by me.

Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Mark Brown
2008-05-28 17:58:05 +01:00
committed by Takashi Iwai
parent a93bbaa77e
commit e13ac2e9b1
2 changed files with 87 additions and 0 deletions
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72
sound/soc/soc-core.c
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@ -1589,6 +1589,78 @@ int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol,
}
EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r);
/**
* snd_soc_info_volsw_s8 - signed mixer info callback
* @kcontrol: mixer control
* @uinfo: control element information
*
* Callback to provide information about a signed mixer control.
*
* Returns 0 for success.
*/
int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
int max = (signed char)((kcontrol->private_value >> 16) & 0xff);
int min = (signed char)((kcontrol->private_value >> 24) & 0xff);
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
uinfo->count = 2;
uinfo->value.integer.min = 0;
uinfo->value.integer.max = max-min;
return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8);
/**
* snd_soc_get_volsw_s8 - signed mixer get callback
* @kcontrol: mixer control
* @uinfo: control element information
*
* Callback to get the value of a signed mixer control.
*
* Returns 0 for success.
*/
int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
int reg = kcontrol->private_value & 0xff;
int min = (signed char)((kcontrol->private_value >> 24) & 0xff);
int val = snd_soc_read(codec, reg);
ucontrol->value.integer.value[0] =
((signed char)(val & 0xff))-min;
ucontrol->value.integer.value[1] =
((signed char)((val >> 8) & 0xff))-min;
return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8);
/**
* snd_soc_put_volsw_sgn - signed mixer put callback
* @kcontrol: mixer control
* @uinfo: control element information
*
* Callback to set the value of a signed mixer control.
*
* Returns 0 for success.
*/
int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
int reg = kcontrol->private_value & 0xff;
int min = (signed char)((kcontrol->private_value >> 24) & 0xff);
unsigned short val;
val = (ucontrol->value.integer.value[0]+min) & 0xff;
val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8;
return snd_soc_update_bits(codec, reg, 0xffff, val);
}
EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8);
static int __devinit snd_soc_init(void)
{
printk(KERN_INFO "ASoC version %s\n", SND_SOC_VERSION);