Commit f4bee1bb authored Mar 18, 2010 by Barry Song Committed by Mark Brown Mar 18, 2010

ASoC: soc-cache: let reg be AND'ed by 0xff instead of data buffer for 8_8 mode



The registers for AD193X are defined as 0x800-0x810 for spi which uses
16_8 mode, for i2c to support AD1937, we will use 8_8 mode, only the low
byte of 0x800-0x810 is valid.  The patch will not destory other codecs,
but make soc cache interface more useful.

Signed-off-by: Barry Song <barry.song@analog.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

parent 85dfcdff

sound/soc/soc-cache.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -159,7 +159,8 @@ static int snd_soc_8_8_write(struct snd_soc_codec *codec, unsigned int reg,

		BUG_ON(codec->volatile_register);

		data[0] = reg & 0xff;
		reg &= 0xff;
		data[0] = reg;
		data[1] = value & 0xff;

		if (reg < codec->reg_cache_size)
		@@ -180,6 +181,7 @@ static unsigned int snd_soc_8_8_read(struct snd_soc_codec *codec,
		unsigned int reg)
		{
		u8 *cache = codec->reg_cache;
		reg &= 0xff;
		if (reg >= codec->reg_cache_size)
		return -1;
		return cache[reg];

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