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ALSA: virtuoso: add de-emphasis control 

Add control for the de-emphasis filter in the PCM179x DACs

Signed-off-by: Tom Yan <tom.ty89@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Tom Yan 2018-12-20 07:45:51 +08:00 committed by Takashi Iwai
parent c2a7c55a04
commit 748b6ec359
2 changed files with 69 additions and 3 deletions
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1
sound/pci/oxygen/pcm1796.h
View File

@ -10,7 +10,6 @@
#define PCM1796_MUTE 0x01
#define PCM1796_DME 0x02
#define PCM1796_DMF_MASK 0x0c
#define PCM1796_DMF_DISABLED 0x00
#define PCM1796_DMF_48 0x04
#define PCM1796_DMF_441 0x08
#define PCM1796_DMF_32 0x0c

71
sound/pci/oxygen/xonar_pcm179x.c
View File

@ -331,7 +331,7 @@ static void pcm1796_init(struct oxygen *chip)
struct xonar_pcm179x *data = chip->model_data;
data->pcm1796_regs[0][18 - PCM1796_REG_BASE] =
PCM1796_DMF_DISABLED | PCM1796_FMT_24_I2S | PCM1796_ATLD;
PCM1796_FMT_24_I2S | PCM1796_ATLD;
if (!data->broken_i2c)
data->pcm1796_regs[0][18 - PCM1796_REG_BASE] |= PCM1796_MUTE;
data->pcm1796_regs[0][19 - PCM1796_REG_BASE] =
@ -621,6 +621,23 @@ static void update_pcm1796_oversampling(struct oxygen *chip)
pcm1796_write_cached(chip, i, 20, reg);
}
static void update_pcm1796_deemph(struct oxygen *chip)
{
struct xonar_pcm179x *data = chip->model_data;
unsigned int i;
u8 reg;
reg = data->pcm1796_regs[0][18 - PCM1796_REG_BASE] & ~PCM1796_DMF_MASK;
if (data->current_rate == 48000)
reg |= PCM1796_DMF_48;
else if (data->current_rate == 44100)
reg |= PCM1796_DMF_441;
else if (data->current_rate == 32000)
reg |= PCM1796_DMF_32;
for (i = 0; i < data->dacs; ++i)
pcm1796_write_cached(chip, i, 18, reg);
}
static void set_pcm1796_params(struct oxygen *chip,
struct snd_pcm_hw_params *params)
{
@ -629,6 +646,7 @@ static void set_pcm1796_params(struct oxygen *chip,
msleep(1);
data->current_rate = params_rate(params);
update_pcm1796_oversampling(chip);
update_pcm1796_deemph(chip);
}
static void update_pcm1796_volume(struct oxygen *chip)
@ -653,9 +671,11 @@ static void update_pcm1796_mute(struct oxygen *chip)
unsigned int i;
u8 value;
value = PCM1796_DMF_DISABLED | PCM1796_FMT_24_I2S | PCM1796_ATLD;
value = data->pcm1796_regs[0][18 - PCM1796_REG_BASE];
if (chip->dac_mute)
value |= PCM1796_MUTE;
else
value &= ~PCM1796_MUTE;
for (i = 0; i < data->dacs; ++i)
pcm1796_write_cached(chip, i, 18, value);
}
@ -777,6 +797,49 @@ static const struct snd_kcontrol_new rolloff_control = {
.put = rolloff_put,
};
static int deemph_get(struct snd_kcontrol *ctl,
struct snd_ctl_elem_value *value)
{
struct oxygen *chip = ctl->private_data;
struct xonar_pcm179x *data = chip->model_data;
value->value.integer.value[0] =
!!(data->pcm1796_regs[0][18 - PCM1796_REG_BASE] & PCM1796_DME);
return 0;
}
static int deemph_put(struct snd_kcontrol *ctl,
struct snd_ctl_elem_value *value)
{
struct oxygen *chip = ctl->private_data;
struct xonar_pcm179x *data = chip->model_data;
unsigned int i;
int changed;
u8 reg;
mutex_lock(&chip->mutex);
reg = data->pcm1796_regs[0][18 - PCM1796_REG_BASE];
if (!value->value.integer.value[0])
reg &= ~PCM1796_DME;
else
reg |= PCM1796_DME;
changed = reg != data->pcm1796_regs[0][18 - PCM1796_REG_BASE];
if (changed) {
for (i = 0; i < data->dacs; ++i)
pcm1796_write(chip, i, 18, reg);
}
mutex_unlock(&chip->mutex);
return changed;
}
static const struct snd_kcontrol_new deemph_control = {
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "De-emphasis Playback Switch",
.info = snd_ctl_boolean_mono_info,
.get = deemph_get,
.put = deemph_put,
};
static const struct snd_kcontrol_new hdav_hdmi_control = {
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "HDMI Playback Switch",
@ -1011,6 +1074,10 @@ static int add_pcm1796_controls(struct oxygen *chip)
snd_ctl_new1(&rolloff_control, chip));
if (err < 0)
return err;
err = snd_ctl_add(chip->card,
snd_ctl_new1(&deemph_control, chip));
if (err < 0)
return err;
}
return 0;
}