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Commit 85dfcdff authored by Cliff Cai's avatar Cliff Cai Committed by Mark Brown
Browse files

ASoC: soc-cache: add i2c read entry for 8_8 mode 



Signed-off-by: default avatarCliff Cai <cliff.cai@analog.com>
Signed-off-by: default avatarBarry Song <barry.song@analog.com>
Acked-by: default avatarLiam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent dd76769d

sound/soc/soc-cache.c

+35 −0
Original line number Diff line number Diff line
@@ -225,6 +225,40 @@ static unsigned int snd_soc_8_16_read(struct snd_soc_codec *codec, 
	}

}



#if defined(CONFIG_I2C) || (defined(CONFIG_I2C_MODULE) && defined(MODULE))

static unsigned int snd_soc_8_8_read_i2c(struct snd_soc_codec *codec,

					  unsigned int r)

{

	struct i2c_msg xfer[2];

	u8 reg = r;

	u8 data;

	int ret;

	struct i2c_client *client = codec->control_data;



	/* Write register */

	xfer[0].addr = client->addr;

	xfer[0].flags = 0;

	xfer[0].len = 1;

	xfer[0].buf = &reg;



	/* Read data */

	xfer[1].addr = client->addr;

	xfer[1].flags = I2C_M_RD;

	xfer[1].len = 1;

	xfer[1].buf = &data;



	ret = i2c_transfer(client->adapter, xfer, 2);

	if (ret != 2) {

		dev_err(&client->dev, "i2c_transfer() returned %d\n", ret);

		return 0;

	}



	return data;

}

#else

#define snd_soc_8_8_read_i2c NULL

#endif



#if defined(CONFIG_I2C) || (defined(CONFIG_I2C_MODULE) && defined(MODULE))

static unsigned int snd_soc_8_16_read_i2c(struct snd_soc_codec *codec,

					  unsigned int r)
@@ -466,6 +500,7 @@ static struct { 
	{

		.addr_bits = 8, .data_bits = 8,

		.write = snd_soc_8_8_write, .read = snd_soc_8_8_read,

		.i2c_read = snd_soc_8_8_read_i2c,

	},

	{

		.addr_bits = 8, .data_bits = 16,