From: Peter Rosin Date: Mon, 8 Dec 2014 15:33:11 +0000 (+0100) Subject: ASoC: pcm512x: Trigger auto-increment of register addresses on i2c X-Git-Tag: v3.16.35~3208 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=c28dedb17e37ed0c931f251076093cd004abc301;p=thirdparty%2Fkernel%2Fstable.git ASoC: pcm512x: Trigger auto-increment of register addresses on i2c commit 681a19560378213a193c424881b2180a783b81ae upstream. 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 Signed-off-by: Mark Brown Signed-off-by: Luis Henriques --- diff --git a/sound/soc/codecs/pcm512x-i2c.c b/sound/soc/codecs/pcm512x-i2c.c index 4d62230bd378f..d0547fa275fc3 100644 --- a/sound/soc/codecs/pcm512x-i2c.c +++ b/sound/soc/codecs/pcm512x-i2c.c @@ -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);