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Subject[RESENT PATCH v6 7/8] ASoC: rockchip: Add support for DMIC codec
Date
Add support for optional dmic codec.

Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
---

Changes in v6:
Add dmic wakeup delay(not used for now).

Changes in v5: None
Changes in v3: None
Changes in v2: None

sound/soc/rockchip/Kconfig | 1 +
sound/soc/rockchip/rk3399_gru_sound.c | 36 +++++++++++++++++++++++++++++++++++
2 files changed, 37 insertions(+)

diff --git a/sound/soc/rockchip/Kconfig b/sound/soc/rockchip/Kconfig
index 8f0d0d8d34e6..b0825370d262 100644
--- a/sound/soc/rockchip/Kconfig
+++ b/sound/soc/rockchip/Kconfig
@@ -69,6 +69,7 @@ config SND_SOC_RK3399_GRU_SOUND
select SND_SOC_DA7219
select SND_SOC_RT5514_SPI
select SND_SOC_HDMI_CODEC
+ select SND_SOC_DMIC
help
Say Y or M here if you want to add support multiple codecs for SoC
audio on Rockchip RK3399 GRU boards.
diff --git a/sound/soc/rockchip/rk3399_gru_sound.c b/sound/soc/rockchip/rk3399_gru_sound.c
index 91aab5c18f3b..5ab25962cabd 100644
--- a/sound/soc/rockchip/rk3399_gru_sound.c
+++ b/sound/soc/rockchip/rk3399_gru_sound.c
@@ -267,6 +267,28 @@ static int rockchip_sound_cdndp_hw_params(struct snd_pcm_substream *substream,
return 0;
}

+static int rockchip_sound_dmic_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ unsigned int mclk;
+ int ret;
+
+ mclk = params_rate(params) * SOUND_FS;
+
+ ret = snd_soc_dai_set_sysclk(rtd->cpu_dai, 0, mclk, 0);
+ if (ret) {
+ dev_err(rtd->card->dev, "%s() error setting sysclk to %u: %d\n",
+ __func__, mclk, ret);
+ return ret;
+ }
+
+ /* Wait for DMIC stable */
+ msleep(dmic_wakeup_delay);
+
+ return 0;
+}
+
static const struct snd_soc_ops rockchip_sound_max98357a_ops = {
.hw_params = rockchip_sound_max98357a_hw_params,
};
@@ -283,6 +305,10 @@ static struct snd_soc_ops rockchip_sound_cdndp_ops = {
.hw_params = rockchip_sound_cdndp_hw_params,
};

+static struct snd_soc_ops rockchip_sound_dmic_ops = {
+ .hw_params = rockchip_sound_dmic_hw_params,
+};
+
static struct snd_soc_card rockchip_sound_card = {
.name = "rk3399-gru-sound",
.owner = THIS_MODULE,
@@ -297,6 +323,7 @@ static struct snd_soc_card rockchip_sound_card = {
enum {
DAILINK_CDNDP,
DAILINK_DA7219,
+ DAILINK_DMIC,
DAILINK_MAX98357A,
DAILINK_RT5514,
DAILINK_RT5514_DSP,
@@ -305,6 +332,7 @@ enum {
static const char * const dailink_compat[] = {
[DAILINK_CDNDP] = "rockchip,rk3399-cdn-dp",
[DAILINK_DA7219] = "dlg,da7219",
+ [DAILINK_DMIC] = "dmic-codec",
[DAILINK_MAX98357A] = "maxim,max98357a",
[DAILINK_RT5514] = "realtek,rt5514-i2c",
[DAILINK_RT5514_DSP] = "realtek,rt5514-spi",
@@ -329,6 +357,14 @@ static const struct snd_soc_dai_link rockchip_dais[] = {
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBS_CFS,
},
+ [DAILINK_DMIC] = {
+ .name = "DMIC",
+ .stream_name = "DMIC PCM",
+ .codec_dai_name = "dmic-hifi",
+ .ops = &rockchip_sound_dmic_ops,
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBS_CFS,
+ },
[DAILINK_MAX98357A] = {
.name = "MAX98357A",
.stream_name = "MAX98357A PCM",
--
2.11.0

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