diff options
| author | Peter Ujfalusi <peter.ujfalusi@ti.com> | 2014-01-03 15:27:49 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2014-01-08 12:48:53 +0000 |
| commit | a8fc415c29a62e4f0a7a932110ee9d8423e2cc52 (patch) | |
| tree | 85f9155f72cf260556e67e4685607415d32ed760 /sound/soc/codecs/twl4030.c | |
| parent | 258549c06803da30acf0971807c985bf83db8491 (diff) | |
| download | linux-next-a8fc415c29a62e4f0a7a932110ee9d8423e2cc52.tar.gz | |
ASoC: twl4030: Separate write condition checking from I/O function
Simplifies the code a bit and prepares it to the removal of local caching.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'sound/soc/codecs/twl4030.c')
| -rw-r--r-- | sound/soc/codecs/twl4030.c | 40 |
1 files changed, 23 insertions, 17 deletions
diff --git a/sound/soc/codecs/twl4030.c b/sound/soc/codecs/twl4030.c index dfc51bb425da..419108ae31de 100644 --- a/sound/soc/codecs/twl4030.c +++ b/sound/soc/codecs/twl4030.c @@ -181,50 +181,56 @@ static inline void twl4030_write_reg_cache(struct snd_soc_codec *codec, cache[reg] = value; } -/* - * write to the twl4030 register space - */ -static int twl4030_write(struct snd_soc_codec *codec, - unsigned int reg, unsigned int value) +static bool twl4030_can_write_to_chip(struct snd_soc_codec *codec, + unsigned int reg) { struct twl4030_priv *twl4030 = snd_soc_codec_get_drvdata(codec); - int write_to_reg = 0; + bool write_to_reg = false; - twl4030_write_reg_cache(codec, reg, value); /* Decide if the given register can be written */ switch (reg) { case TWL4030_REG_EAR_CTL: if (twl4030->earpiece_enabled) - write_to_reg = 1; + write_to_reg = true; break; case TWL4030_REG_PREDL_CTL: if (twl4030->predrivel_enabled) - write_to_reg = 1; + write_to_reg = true; break; case TWL4030_REG_PREDR_CTL: if (twl4030->predriver_enabled) - write_to_reg = 1; + write_to_reg = true; break; case TWL4030_REG_PRECKL_CTL: if (twl4030->carkitl_enabled) - write_to_reg = 1; + write_to_reg = true; break; case TWL4030_REG_PRECKR_CTL: if (twl4030->carkitr_enabled) - write_to_reg = 1; + write_to_reg = true; break; case TWL4030_REG_HS_GAIN_SET: if (twl4030->hsl_enabled || twl4030->hsr_enabled) - write_to_reg = 1; + write_to_reg = true; break; default: /* All other register can be written */ - write_to_reg = 1; + write_to_reg = true; break; } - if (write_to_reg) - return twl_i2c_write_u8(TWL4030_MODULE_AUDIO_VOICE, - value, reg); + + return write_to_reg; +} + +/* + * write to the twl4030 register space + */ +static int twl4030_write(struct snd_soc_codec *codec, + unsigned int reg, unsigned int value) +{ + twl4030_write_reg_cache(codec, reg, value); + if (twl4030_can_write_to_chip(codec, reg)) + return twl_i2c_write_u8(TWL4030_MODULE_AUDIO_VOICE, value, reg); return 0; } |