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ASoC: qcom: sc7180: Modify machine driver for 2mic

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In addition, having mixer control to switch between DMICs by
using "dmic-gpios" property.

Refer to this one as an example,
commit b7a742cff3 ("ASoC: AMD: Use mixer control to switch between DMICs")

Signed-off-by: Ajye Huang <ajye_huang@compal.corp-partner.google.com>
Reviewed-by: Tzung-Bi Shih <tzungbi@google.com>
Link: https://lore.kernel.org/r/20201106061433.1483129-3-ajye_huang@compal.corp-partner.google.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Ajye Huang 2020-11-06 14:14:33 +08:00 committed by Mark Brown
parent 0e38d93493
commit 3cfbf07c6d
No known key found for this signature in database
GPG key ID: 24D68B725D5487D0
1 changed files with 61 additions and 0 deletions
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61
sound/soc/qcom/sc7180.c
View file

@ -5,6 +5,8 @@
// sc7180.c -- ALSA SoC Machine driver for SC7180
#include <dt-bindings/sound/sc7180-lpass.h>
#include <linux/gpio.h>
#include <linux/gpio/consumer.h>
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
@ -28,6 +30,8 @@ struct sc7180_snd_data {
u32 pri_mi2s_clk_count;
struct snd_soc_jack hs_jack;
struct snd_soc_jack hdmi_jack;
struct gpio_desc *dmic_sel;
int dmic_switch;
};
static void sc7180_jack_free(struct snd_jack *jack)
@ -169,6 +173,27 @@ static int sc7180_snd_startup(struct snd_pcm_substream *substream)
return 0;
}
static int dmic_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
struct sc7180_snd_data *data = snd_soc_card_get_drvdata(dapm->card);
ucontrol->value.integer.value[0] = data->dmic_switch;
return 0;
}
static int dmic_set(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
struct sc7180_snd_data *data = snd_soc_card_get_drvdata(dapm->card);
data->dmic_switch = ucontrol->value.integer.value[0];
gpiod_set_value(data->dmic_sel, data->dmic_switch);
return 0;
}
static void sc7180_snd_shutdown(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
@ -206,6 +231,30 @@ static const struct snd_soc_dapm_widget sc7180_snd_widgets[] = {
SND_SOC_DAPM_MIC("Headset Mic", NULL),
};
static const char * const dmic_mux_text[] = {
"Front Mic",
"Rear Mic",
};
static SOC_ENUM_SINGLE_DECL(sc7180_dmic_enum,
SND_SOC_NOPM, 0, dmic_mux_text);
static const struct snd_kcontrol_new sc7180_dmic_mux_control =
SOC_DAPM_ENUM_EXT("DMIC Select Mux", sc7180_dmic_enum,
dmic_get, dmic_set);
static const struct snd_soc_dapm_widget sc7180_snd_dual_mic_widgets[] = {
SND_SOC_DAPM_HP("Headphone Jack", NULL),
SND_SOC_DAPM_MIC("Headset Mic", NULL),
SND_SOC_DAPM_MIC("DMIC", NULL),
SND_SOC_DAPM_MUX("Dmic Mux", SND_SOC_NOPM, 0, 0, &sc7180_dmic_mux_control),
};
static const struct snd_soc_dapm_route sc7180_snd_dual_mic_audio_route[] = {
{"Dmic Mux", "Front Mic", "DMIC"},
{"Dmic Mux", "Rear Mic", "DMIC"},
};
static void sc7180_add_ops(struct snd_soc_card *card)
{
struct snd_soc_dai_link *link;
@ -238,6 +287,18 @@ static int sc7180_snd_platform_probe(struct platform_device *pdev)
card->dapm_widgets = sc7180_snd_widgets;
card->num_dapm_widgets = ARRAY_SIZE(sc7180_snd_widgets);
if (of_property_read_bool(dev->of_node, "dmic-gpios")) {
card->dapm_widgets = sc7180_snd_dual_mic_widgets,
card->num_dapm_widgets = ARRAY_SIZE(sc7180_snd_dual_mic_widgets),
card->dapm_routes = sc7180_snd_dual_mic_audio_route,
card->num_dapm_routes = ARRAY_SIZE(sc7180_snd_dual_mic_audio_route),
data->dmic_sel = devm_gpiod_get(&pdev->dev, "dmic", GPIOD_OUT_LOW);
if (IS_ERR(data->dmic_sel)) {
dev_err(&pdev->dev, "DMIC gpio failed err=%ld\n", PTR_ERR(data->dmic_sel));
return PTR_ERR(data->dmic_sel);
}
}
ret = qcom_snd_parse_of(card);
if (ret)
return ret;