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Commit 1ff04886 authored by Clemens Ladisch's avatar Clemens Ladisch Committed by Takashi Iwai
Browse files

sound: oxygen: add high-pass filter control 



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

Signed-off-by: default avatarClemens Ladisch <clemens@ladisch.de>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 4852ad02

sound/pci/oxygen/oxygen.c

+71 −2
Original line number Diff line number Diff line
@@ -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;