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Commit fab90aa4 authored by Barry Song's avatar Barry Song Committed by Mark Brown
Browse files

ASoC: ad193x: add set_sysclk entry to support different clock input 



Signed-off-by: default avatarBarry Song <21cnbao@gmail.com>
Acked-by: default avatarLiam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent 669be070

sound/soc/codecs/ad193x.c

+40 −1
Original line number Diff line number Diff line
@@ -24,6 +24,7 @@ 


/* codec private data */

struct ad193x_priv {

	unsigned int sysclk;

	struct snd_soc_codec codec;

	u8 reg_cache[AD193X_NUM_REGS];

};
@@ -251,15 +252,32 @@ static int ad193x_set_dai_fmt(struct snd_soc_dai *codec_dai, 
	return 0;

}



static int ad193x_set_dai_sysclk(struct snd_soc_dai *codec_dai,

		int clk_id, unsigned int freq, int dir)

{

	struct snd_soc_codec *codec = codec_dai->codec;

	struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec);

	switch (freq) {

	case 12288000:

	case 18432000:

	case 24576000:

	case 36864000:

		ad193x->sysclk = freq;

		return 0;

	}

	return -EINVAL;

}



static int ad193x_hw_params(struct snd_pcm_substream *substream,

		struct snd_pcm_hw_params *params,

		struct snd_soc_dai *dai)

{

	int word_len = 0, reg = 0;

	int word_len = 0, reg = 0, master_rate = 0;



	struct snd_soc_pcm_runtime *rtd = substream->private_data;

	struct snd_soc_device *socdev = rtd->socdev;

	struct snd_soc_codec *codec = socdev->card->codec;

	struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec);



	/* bit size */

	switch (params_format(params)) {
@@ -275,6 +293,25 @@ static int ad193x_hw_params(struct snd_pcm_substream *substream, 
		break;

	}



	switch (ad193x->sysclk) {

	case 12288000:

		master_rate = AD193X_PLL_INPUT_256;

		break;

	case 18432000:

		master_rate = AD193X_PLL_INPUT_384;

		break;

	case 24576000:

		master_rate = AD193X_PLL_INPUT_512;

		break;

	case 36864000:

		master_rate = AD193X_PLL_INPUT_768;

		break;

	}



	reg = snd_soc_read(codec, AD193X_PLL_CLK_CTRL0);

	reg = (reg & AD193X_PLL_INPUT_MASK) | master_rate;

	snd_soc_write(codec, AD193X_PLL_CLK_CTRL0, reg);



	reg = snd_soc_read(codec, AD193X_DAC_CTRL2);

	reg = (reg & (~AD193X_DAC_WORD_LEN_MASK)) | word_len;

	snd_soc_write(codec, AD193X_DAC_CTRL2, reg);
@@ -348,6 +385,7 @@ static int ad193x_bus_probe(struct device *dev, void *ctrl_data, int bus_type) 
	/* pll input: mclki/xi */

	snd_soc_write(codec, AD193X_PLL_CLK_CTRL0, 0x99); /* mclk=24.576Mhz: 0x9D; mclk=12.288Mhz: 0x99 */

	snd_soc_write(codec, AD193X_PLL_CLK_CTRL1, 0x04);

	ad193x->sysclk = 12288000;



	ret = snd_soc_register_codec(codec);

	if (ret != 0) {
@@ -383,6 +421,7 @@ static struct snd_soc_dai_ops ad193x_dai_ops = { 
	.hw_params = ad193x_hw_params,

	.digital_mute = ad193x_mute,

	.set_tdm_slot = ad193x_set_tdm_slot,

	.set_sysclk	= ad193x_set_dai_sysclk,

	.set_fmt = ad193x_set_dai_fmt,

};

sound/soc/codecs/ad193x.h

+5 −0
Original line number Diff line number Diff line
@@ -11,6 +11,11 @@ 


#define AD193X_PLL_CLK_CTRL0    0x800

#define AD193X_PLL_POWERDOWN           0x01

#define AD193X_PLL_INPUT_MASK   (~0x6)

#define AD193X_PLL_INPUT_256    (0 << 1)

#define AD193X_PLL_INPUT_384    (1 << 1)

#define AD193X_PLL_INPUT_512    (2 << 1)

#define AD193X_PLL_INPUT_768    (3 << 1)

#define AD193X_PLL_CLK_CTRL1    0x801

#define AD193X_DAC_CTRL0        0x802

#define AD193X_DAC_POWERDOWN           0x01