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ASoC: pcm512x: Trigger auto-increment of register addresses on i2c

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When the codec is connected using i2c, it will only auto-increment
register addresses if msb (0x80) of the register address byte is set.

[Fixes cache sync if multiple adjacent registers are updated -- broonie]

Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
This commit is contained in:
Peter Rosin 2014-12-08 16:33:11 +01:00 committed by Mark Brown
parent b2776bf714
commit 681a195603
1 changed files with 6 additions and 1 deletions
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7
sound/soc/codecs/pcm512x-i2c.c
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@ -24,8 +24,13 @@ static int pcm512x_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct regmap *regmap;
struct regmap_config config = pcm512x_regmap;
regmap = devm_regmap_init_i2c(i2c, &pcm512x_regmap);
/* msb needs to be set to enable auto-increment of addresses */
config.read_flag_mask = 0x80;
config.write_flag_mask = 0x80;
regmap = devm_regmap_init_i2c(i2c, &config);
if (IS_ERR(regmap))
return PTR_ERR(regmap);