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sound: oxygen: add high-pass filter control 

Add a control that allows disabling the high-pass filter of the WM8785 ADC.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Clemens Ladisch 2009-09-28 11:21:51 +02:00 committed by Takashi Iwai
parent 4852ad0247
commit 1ff048869e
1 changed files with 71 additions and 2 deletions
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73
sound/pci/oxygen/oxygen.c
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@ -98,7 +98,7 @@ MODULE_DEVICE_TABLE(pci, oxygen_ids);
struct generic_data {
u8 ak4396_regs[4][5];
u16 wm8785_regs[1];
u16 wm8785_regs[3];
};
static void ak4396_write(struct oxygen *chip, unsigned int codec,
@ -184,6 +184,7 @@ static void wm8785_registers_init(struct oxygen *chip)
wm8785_write(chip, WM8785_R7, 0);
wm8785_write(chip, WM8785_R0, data->wm8785_regs[0]);
wm8785_write(chip, WM8785_R2, data->wm8785_regs[2]);
}
static void wm8785_init(struct oxygen *chip)
@ -192,6 +193,7 @@ static void wm8785_init(struct oxygen *chip)
data->wm8785_regs[0] =
WM8785_MCR_SLAVE | WM8785_OSR_SINGLE | WM8785_FORMAT_LJUST;
data->wm8785_regs[2] = WM8785_HPFR | WM8785_HPFL;
wm8785_registers_init(chip);
snd_component_add(chip->card, "WM8785");
}
@ -334,6 +336,7 @@ static void set_wm8785_params(struct oxygen *chip,
if (value != data->wm8785_regs[0]) {
wm8785_write(chip, WM8785_R7, 0);
wm8785_write(chip, WM8785_R0, value);
wm8785_write(chip, WM8785_R2, data->wm8785_regs[2]);
}
}
@ -411,11 +414,75 @@ static const struct snd_kcontrol_new rolloff_control = {
.put = rolloff_put,
};
static int hpf_info(struct snd_kcontrol *ctl, struct snd_ctl_elem_info *info)
{
static const char *const names[2] = {
"None", "High-pass Filter"
};
info->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
info->count = 1;
info->value.enumerated.items = 2;
if (info->value.enumerated.item >= 2)
info->value.enumerated.item = 1;
strcpy(info->value.enumerated.name, names[info->value.enumerated.item]);
return 0;
}
static int hpf_get(struct snd_kcontrol *ctl, struct snd_ctl_elem_value *value)
{
struct oxygen *chip = ctl->private_data;
struct generic_data *data = chip->model_data;
value->value.enumerated.item[0] =
(data->wm8785_regs[WM8785_R2] & WM8785_HPFR) != 0;
return 0;
}
static int hpf_put(struct snd_kcontrol *ctl, struct snd_ctl_elem_value *value)
{
struct oxygen *chip = ctl->private_data;
struct generic_data *data = chip->model_data;
unsigned int reg;
int changed;
mutex_lock(&chip->mutex);
reg = data->wm8785_regs[WM8785_R2] & ~(WM8785_HPFR | WM8785_HPFL);
if (value->value.enumerated.item[0])
reg |= WM8785_HPFR | WM8785_HPFL;
changed = reg != data->wm8785_regs[WM8785_R2];
if (changed)
wm8785_write(chip, WM8785_R2, reg);
mutex_unlock(&chip->mutex);
return changed;
}
static const struct snd_kcontrol_new hpf_control = {
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "ADC Filter Capture Enum",
.info = hpf_info,
.get = hpf_get,
.put = hpf_put,
};
static int generic_mixer_init(struct oxygen *chip)
{
return snd_ctl_add(chip->card, snd_ctl_new1(&rolloff_control, chip));
}
static int generic_wm8785_mixer_init(struct oxygen *chip)
{
int err;
err = generic_mixer_init(chip);
if (err < 0)
return err;
err = snd_ctl_add(chip->card, snd_ctl_new1(&hpf_control, chip));
if (err < 0)
return err;
return 0;
}
static const DECLARE_TLV_DB_LINEAR(ak4396_db_scale, TLV_DB_GAIN_MUTE, 0);
static const struct oxygen_model model_generic = {
@ -423,7 +490,7 @@ static const struct oxygen_model model_generic = {
.longname = "C-Media Oxygen HD Audio",
.chip = "CMI8788",
.init = generic_init,
.mixer_init = generic_mixer_init,
.mixer_init = generic_wm8785_mixer_init,
.cleanup = generic_cleanup,
.resume = generic_resume,
.get_i2s_mclk = oxygen_default_i2s_mclk,
@ -455,6 +522,7 @@ static int __devinit get_oxygen_model(struct oxygen *chip,
switch (id->driver_data) {
case MODEL_MERIDIAN:
chip->model.init = meridian_init;
chip->model.mixer_init = generic_mixer_init;
chip->model.resume = meridian_resume;
chip->model.set_adc_params = set_ak5385_params;
chip->model.device_config = PLAYBACK_0_TO_I2S |
@ -470,6 +538,7 @@ static int __devinit get_oxygen_model(struct oxygen *chip,
break;
case MODEL_CLARO_HALO:
chip->model.init = claro_halo_init;
chip->model.mixer_init = generic_mixer_init;
chip->model.cleanup = claro_cleanup;
chip->model.suspend = claro_suspend;
chip->model.resume = claro_resume;