int tse850_put_ana(struct snd_kcontrol *kctrl,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kctrl);
struct snd_soc_card *card = dapm->card;
struct tse850_priv *tse850 = snd_soc_card_get_drvdata(card);
struct soc_enum *e = (struct soc_enum *)kctrl->private_value;
unsigned int uV = ucontrol->value.enumerated.item[0];
int ret;
if (uV >= e->items)
return -EINVAL;
/*
* Map enum zero (Low) to 2 volts on the regulator, do this since
* the ana regulator is supplied by the system 12V voltage and
* requesting anything below the system voltage causes the system
* voltage to be passed through the regulator. Also, the ana
* regulator induces noise when requesting voltages near the
* system voltage. So, by mapping Low to 2V, that noise is
* eliminated when all that is needed is 12V (the system voltage).
*/
if (uV)
uV = 11000000 + (1000000 * uV);
else
uV = 2000000;
ret = regulator_set_voltage(tse850->ana, uV, uV);
if (ret < 0)
return ret;
return snd_soc_dapm_put_enum_double(kctrl, ucontrol);
}
static int tse850_put_mux1(struct snd_kcontrol *kctrl,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kctrl);
struct snd_soc_card *card = dapm->card;
struct tse850_priv *tse850 = snd_soc_card_get_drvdata(card);
struct soc_enum *e = (struct soc_enum *)kctrl->private_value;
unsigned int val = ucontrol->value.enumerated.item[0];
if (val >= e->items)
return -EINVAL;
gpiod_set_value_cansleep(tse850->loop1, val);
tse850->loop1_cache = val;
return snd_soc_dapm_put_enum_double(kctrl, ucontrol);
}
/*
* When used with DAC outputs only the WM8993 charge pump supports
* operation in class W mode, providing very low power consumption
* when used with digital sources. Enable and disable this mode
* automatically depending on the mixer configuration.
*
* Currently the only supported paths are the direct DAC->headphone
* paths (which provide minimum power consumption anyway).
*/
static int class_w_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
struct snd_soc_dapm_widget *widget = wlist->widgets[0];
struct snd_soc_codec *codec = widget->codec;
struct wm8993_priv *wm8993 = snd_soc_codec_get_drvdata(codec);
int ret;
/* Turn it off if we're using the main output mixer */
if (ucontrol->value.integer.value[0] == 0) {
if (wm8993->class_w_users == 0) {
dev_dbg(codec->dev, "Disabling Class W\n");
snd_soc_update_bits(codec, WM8993_CLASS_W_0,
WM8993_CP_DYN_FREQ |
WM8993_CP_DYN_V,
0);
}
wm8993->class_w_users++;
wm8993->hubs_data.class_w = true;
}
/* Implement the change */
ret = snd_soc_dapm_put_enum_double(kcontrol, ucontrol);
/* Enable it if we're using the direct DAC path */
if (ucontrol->value.integer.value[0] == 1) {
if (wm8993->class_w_users == 1) {
dev_dbg(codec->dev, "Enabling Class W\n");
snd_soc_update_bits(codec, WM8993_CLASS_W_0,
WM8993_CP_DYN_FREQ |
WM8993_CP_DYN_V,
WM8993_CP_DYN_FREQ |
WM8993_CP_DYN_V);
}
wm8993->class_w_users--;
wm8993->hubs_data.class_w = false;
}
dev_dbg(codec->dev, "Indirect DAC use count now %d\n",
wm8993->class_w_users);
return ret;
}
