2020-05-27 09:43:27

by Agrawal, Akshu

[permalink] [raw]
Subject: [PATCH] ASoC: AMD: Use mixer control to switch between DMICs

Having mixer control to switch between DMICs prevents user to
initiate capture simultaneously on both the DMIcs.
Earlier 2 separate devices, one for each DMIC, gave an option of
using them simultaneously, which is not supported.

Signed-off-by: Akshu Agrawal <[email protected]>
---
sound/soc/amd/acp3x-rt5682-max9836.c | 43 +++++++++++-----------------
1 file changed, 16 insertions(+), 27 deletions(-)

diff --git a/sound/soc/amd/acp3x-rt5682-max9836.c b/sound/soc/amd/acp3x-rt5682-max9836.c
index e499c00e0c66..19f55a814547 100644
--- a/sound/soc/amd/acp3x-rt5682-max9836.c
+++ b/sound/soc/amd/acp3x-rt5682-max9836.c
@@ -188,25 +188,27 @@ static int acp3x_ec_dmic0_startup(struct snd_pcm_substream *substream)

machine->cap_i2s_instance = I2S_BT_INSTANCE;
snd_soc_dai_set_bclk_ratio(codec_dai, 64);
- if (dmic_sel)
- gpiod_set_value(dmic_sel, 0);

return rt5682_clk_enable(substream);
}

-static int acp3x_ec_dmic1_startup(struct snd_pcm_substream *substream)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_soc_card *card = rtd->card;
- struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
- struct acp3x_platform_info *machine = snd_soc_card_get_drvdata(card);
+static int front_mic_enabled;

- machine->cap_i2s_instance = I2S_BT_INSTANCE;
- snd_soc_dai_set_bclk_ratio(codec_dai, 64);
- if (dmic_sel)
- gpiod_set_value(dmic_sel, 1);
+static int front_mic_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ ucontrol->value.integer.value[0] = front_mic_enabled;
+ return 0;
+}

- return rt5682_clk_enable(substream);
+static int front_mic_set(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ if (dmic_sel) {
+ front_mic_enabled = ucontrol->value.integer.value[0];
+ gpiod_set_value(dmic_sel, !front_mic_enabled);
+ }
+ return 0;
}

static void rt5682_shutdown(struct snd_pcm_substream *substream)
@@ -229,11 +231,6 @@ static const struct snd_soc_ops acp3x_ec_cap0_ops = {
.shutdown = rt5682_shutdown,
};

-static const struct snd_soc_ops acp3x_ec_cap1_ops = {
- .startup = acp3x_ec_dmic1_startup,
- .shutdown = rt5682_shutdown,
-};
-
SND_SOC_DAILINK_DEF(acp3x_i2s,
DAILINK_COMP_ARRAY(COMP_CPU("acp3x_i2s_playcap.0")));
SND_SOC_DAILINK_DEF(acp3x_bt,
@@ -279,15 +276,6 @@ static struct snd_soc_dai_link acp3x_dai_5682_98357[] = {
.ops = &acp3x_ec_cap0_ops,
SND_SOC_DAILINK_REG(acp3x_bt, cros_ec, platform),
},
- {
- .name = "acp3x-ec-dmic1-capture",
- .stream_name = "Capture DMIC1",
- .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
- | SND_SOC_DAIFMT_CBS_CFS,
- .dpcm_capture = 1,
- .ops = &acp3x_ec_cap1_ops,
- SND_SOC_DAILINK_REG(acp3x_bt, cros_ec, platform),
- },
};

static const struct snd_soc_dapm_widget acp3x_widgets[] = {
@@ -307,6 +295,7 @@ static const struct snd_kcontrol_new acp3x_mc_controls[] = {
SOC_DAPM_PIN_SWITCH("Headphone Jack"),
SOC_DAPM_PIN_SWITCH("Spk"),
SOC_DAPM_PIN_SWITCH("Headset Mic"),
+ SOC_SINGLE_BOOL_EXT("Front Mic", 0, front_mic_get, front_mic_set),
};

static struct snd_soc_card acp3x_card = {
--
2.20.1


2020-05-27 15:46:13

by Mark Brown

[permalink] [raw]
Subject: Re: [PATCH] ASoC: AMD: Use mixer control to switch between DMICs

On Wed, May 27, 2020 at 07:10:16AM +0530, Akshu Agrawal wrote:

> + SOC_SINGLE_BOOL_EXT("Front Mic", 0, front_mic_get, front_mic_set),

This should probably be a mux with two labelled options, or if it's a
boolean control it should end in Switch. A mux definitely seems like a
better option though.


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2020-05-28 05:19:04

by Agrawal, Akshu

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Subject: Re: [PATCH] ASoC: AMD: Use mixer control to switch between DMICs


On 5/27/2020 4:57 PM, Mark Brown wrote:
> On Wed, May 27, 2020 at 07:10:16AM +0530, Akshu Agrawal wrote:
>
>> + SOC_SINGLE_BOOL_EXT("Front Mic", 0, front_mic_get, front_mic_set),
> This should probably be a mux with two labelled options, or if it's a
> boolean control it should end in Switch. A mux definitely seems like a
> better option though.

Actually it's a dmic switch, so will change it to boolean control named
"DMIC switch". Front or rear mic might change with variants.

Thanks,

Akshu