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>
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1 changed files with 3 additions and 1 deletions
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@ -159,7 +159,8 @@ static int snd_soc_8_8_write(struct snd_soc_codec *codec, unsigned int reg,
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BUG_ON(codec->volatile_register);
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BUG_ON(codec->volatile_register);
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data[0] = reg & 0xff;
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reg &= 0xff;
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data[0] = reg;
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data[1] = value & 0xff;
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data[1] = value & 0xff;
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if (reg < codec->reg_cache_size)
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if (reg < codec->reg_cache_size)
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@ -180,6 +181,7 @@ static unsigned int snd_soc_8_8_read(struct snd_soc_codec *codec,
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unsigned int reg)
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unsigned int reg)
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{
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{
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u8 *cache = codec->reg_cache;
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u8 *cache = codec->reg_cache;
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reg &= 0xff;
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if (reg >= codec->reg_cache_size)
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if (reg >= codec->reg_cache_size)
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return -1;
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return -1;
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return cache[reg];
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return cache[reg];
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