[alsa-devel] Applied "ASoC: rockchip: Add support for DMIC codec" to the asoc tree

[Mark Brown]

The patch

   ASoC: rockchip: Add support for DMIC codec

has been applied to the asoc tree at

   git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git 

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

>From 626d84db64d746f63eadf5e241fc2211419e11b8 Mon Sep 17 00:00:00 2001
From: Jeffy Chen <jeffy.chen at rock-chips.com>
Date: Thu, 24 Aug 2017 12:52:26 +0800
Subject: [PATCH] ASoC: rockchip: Add support for DMIC codec

Add support for optional dmic codec.

Signed-off-by: Jeffy Chen <jeffy.chen at rock-chips.com>
Signed-off-by: Mark Brown <broonie at kernel.org>
---
 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",
-- 
2.13.2