Applied "ASoC: rockchip: Add support for DP codec" to the asoc tree

[Mark Brown]

The patch

   ASoC: rockchip: Add support for DP 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 3313faf1053ee6cb90045f6877f11e2f61ead63a Mon Sep 17 00:00:00 2001
From: Jeffy Chen <jeffy.chen at rock-chips.com>
Date: Thu, 24 Aug 2017 12:52:25 +0800
Subject: [PATCH] ASoC: rockchip: Add support for DP codec

Add support for optional cdn dp 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 | 59 +++++++++++++++++++++++++++++++++--
 2 files changed, 58 insertions(+), 2 deletions(-)

diff --git a/sound/soc/rockchip/Kconfig b/sound/soc/rockchip/Kconfig
index c84487805876..8f0d0d8d34e6 100644
--- a/sound/soc/rockchip/Kconfig
+++ b/sound/soc/rockchip/Kconfig
@@ -68,6 +68,7 @@ config SND_SOC_RK3399_GRU_SOUND
 	select SND_SOC_RT5514
 	select SND_SOC_DA7219
 	select SND_SOC_RT5514_SPI
+	select SND_SOC_HDMI_CODEC
 	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 347c34d0db4c..91aab5c18f3b 100644
--- a/sound/soc/rockchip/rk3399_gru_sound.c
+++ b/sound/soc/rockchip/rk3399_gru_sound.c
@@ -228,6 +228,45 @@ static int rockchip_sound_da7219_init(struct snd_soc_pcm_runtime *rtd)
 	return 0;
 }
 
+static int rockchip_sound_cdndp_hw_params(struct snd_pcm_substream *substream,
+					  struct snd_pcm_hw_params *params)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+	struct snd_soc_dai *codec_dai = rtd->codec_dai;
+	int mclk, ret;
+
+	/* in bypass mode, the mclk has to be one of the frequencies below */
+	switch (params_rate(params)) {
+	case 8000:
+	case 16000:
+	case 24000:
+	case 32000:
+	case 48000:
+	case 64000:
+	case 96000:
+		mclk = 12288000;
+		break;
+	case 11025:
+	case 22050:
+	case 44100:
+	case 88200:
+		mclk = 11289600;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk,
+				     SND_SOC_CLOCK_OUT);
+	if (ret < 0) {
+		dev_err(codec_dai->dev, "Can't set cpu clock out %d\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+
 static const struct snd_soc_ops rockchip_sound_max98357a_ops = {
 	.hw_params = rockchip_sound_max98357a_hw_params,
 };
@@ -240,6 +279,10 @@ static const struct snd_soc_ops rockchip_sound_da7219_ops = {
 	.hw_params = rockchip_sound_da7219_hw_params,
 };
 
+static struct snd_soc_ops rockchip_sound_cdndp_ops = {
+	.hw_params = rockchip_sound_cdndp_hw_params,
+};
+
 static struct snd_soc_card rockchip_sound_card = {
 	.name = "rk3399-gru-sound",
 	.owner = THIS_MODULE,
@@ -252,6 +295,7 @@ static struct snd_soc_card rockchip_sound_card = {
 };
 
 enum {
+	DAILINK_CDNDP,
 	DAILINK_DA7219,
 	DAILINK_MAX98357A,
 	DAILINK_RT5514,
@@ -259,6 +303,7 @@ enum {
 };
 
 static const char * const dailink_compat[] = {
+	[DAILINK_CDNDP] = "rockchip,rk3399-cdn-dp",
 	[DAILINK_DA7219] = "dlg,da7219",
 	[DAILINK_MAX98357A] = "maxim,max98357a",
 	[DAILINK_RT5514] = "realtek,rt5514-i2c",
@@ -266,6 +311,14 @@ static const char * const dailink_compat[] = {
 };
 
 static const struct snd_soc_dai_link rockchip_dais[] = {
+	[DAILINK_CDNDP] = {
+		.name = "DP",
+		.stream_name = "DP PCM",
+		.codec_dai_name = "i2s-hifi",
+		.ops = &rockchip_sound_cdndp_ops,
+		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+			SND_SOC_DAIFMT_CBS_CFS,
+	},
 	[DAILINK_DA7219] = {
 		.name = "DA7219",
 		.stream_name = "DA7219 PCM",
@@ -316,7 +369,7 @@ static int rockchip_sound_codec_node_match(struct device_node *np_codec)
 static int rockchip_sound_of_parse_dais(struct device *dev,
 					struct snd_soc_card *card)
 {
-	struct device_node *np_cpu;
+	struct device_node *np_cpu, *np_cpu0, *np_cpu1;
 	struct device_node *np_codec;
 	struct snd_soc_dai_link *dai;
 	int i, index;
@@ -326,7 +379,8 @@ static int rockchip_sound_of_parse_dais(struct device *dev,
 	if (!card->dai_link)
 		return -ENOMEM;
 
-	np_cpu = of_parse_phandle(dev->of_node, "rockchip,cpu", 0);
+	np_cpu0 = of_parse_phandle(dev->of_node, "rockchip,cpu", 0);
+	np_cpu1 = of_parse_phandle(dev->of_node, "rockchip,cpu", 1);
 
 	card->num_links = 0;
 	for (i = 0; i < ARRAY_SIZE(rockchip_dais); i++) {
@@ -342,6 +396,7 @@ static int rockchip_sound_of_parse_dais(struct device *dev,
 		if (index < 0)
 			continue;
 
+		np_cpu = (index == DAILINK_CDNDP) ? np_cpu1 : np_cpu0;
 		if (!np_cpu) {
 			dev_err(dev, "Missing 'rockchip,cpu' for %s\n",
 				rockchip_dais[index].name);
-- 
2.13.2