[PATCH 04/12] ASoC: cs42l42: Separate ASP config from PLL config

Setup of the ASP (audio serial port) was being done as a side-effect of cs42l42_pll_config() and forces a restriction on the ratio of sample_rate to bit_clock that is invalid for Soundwire.

Move the ASP setup into a dedicated function.

Signed-off-by: Richard Fitzgerald rf@opensource.cirrus.com --- sound/soc/codecs/cs42l42.c | 81 +++++++++++++++++++++----------------- sound/soc/codecs/cs42l42.h | 1 - 2 files changed, 44 insertions(+), 38 deletions(-)

diff --git a/sound/soc/codecs/cs42l42.c b/sound/soc/codecs/cs42l42.c index 66c10d24169d..946b2a935256 100644 --- a/sound/soc/codecs/cs42l42.c +++ b/sound/soc/codecs/cs42l42.c @@ -654,7 +654,6 @@ static int cs42l42_pll_config(struct snd_soc_component *component, unsigned int { struct cs42l42_private *cs42l42 = snd_soc_component_get_drvdata(component); int i; - u32 fsync;

/* Don't reconfigure if there is an audio stream running */ if (cs42l42->stream_use) { @@ -680,40 +679,6 @@ static int cs42l42_pll_config(struct snd_soc_component *component, unsigned int (pll_ratio_table[i].mclk_int != 24000000)) << CS42L42_INTERNAL_FS_SHIFT); - - /* Set up the LRCLK */ - fsync = clk / cs42l42->srate; - if (((fsync * cs42l42->srate) != clk) - || ((fsync % 2) != 0)) { - dev_err(component->dev, - "Unsupported sclk %d/sample rate %d\n", - clk, - cs42l42->srate); - return -EINVAL; - } - /* Set the LRCLK period */ - snd_soc_component_update_bits(component, - CS42L42_FSYNC_P_LOWER, - CS42L42_FSYNC_PERIOD_MASK, - CS42L42_FRAC0_VAL(fsync - 1) << - CS42L42_FSYNC_PERIOD_SHIFT); - snd_soc_component_update_bits(component, - CS42L42_FSYNC_P_UPPER, - CS42L42_FSYNC_PERIOD_MASK, - CS42L42_FRAC1_VAL(fsync - 1) << - CS42L42_FSYNC_PERIOD_SHIFT); - /* Set the LRCLK to 50% duty cycle */ - fsync = fsync / 2; - snd_soc_component_update_bits(component, - CS42L42_FSYNC_PW_LOWER, - CS42L42_FSYNC_PULSE_WIDTH_MASK, - CS42L42_FRAC0_VAL(fsync - 1) << - CS42L42_FSYNC_PULSE_WIDTH_SHIFT); - snd_soc_component_update_bits(component, - CS42L42_FSYNC_PW_UPPER, - CS42L42_FSYNC_PULSE_WIDTH_MASK, - CS42L42_FRAC1_VAL(fsync - 1) << - CS42L42_FSYNC_PULSE_WIDTH_SHIFT); if (pll_ratio_table[i].mclk_src_sel == 0) { /* Pass the clock straight through */ snd_soc_component_update_bits(component, @@ -805,6 +770,46 @@ static void cs42l42_src_config(struct snd_soc_component *component, unsigned int fs << CS42L42_CLK_OASRC_SEL_SHIFT); }

+static int cs42l42_asp_config(struct snd_soc_component *component, + unsigned int sclk, unsigned int sample_rate) +{ + u32 fsync = sclk / sample_rate; + + /* Set up the LRCLK */ + if (((fsync * sample_rate) != sclk) || ((fsync % 2) != 0)) { + dev_err(component->dev, + "Unsupported sclk %d/sample rate %d\n", + sclk, + sample_rate); + return -EINVAL; + } + /* Set the LRCLK period */ + snd_soc_component_update_bits(component, + CS42L42_FSYNC_P_LOWER, + CS42L42_FSYNC_PERIOD_MASK, + CS42L42_FRAC0_VAL(fsync - 1) << + CS42L42_FSYNC_PERIOD_SHIFT); + snd_soc_component_update_bits(component, + CS42L42_FSYNC_P_UPPER, + CS42L42_FSYNC_PERIOD_MASK, + CS42L42_FRAC1_VAL(fsync - 1) << + CS42L42_FSYNC_PERIOD_SHIFT); + /* Set the LRCLK to 50% duty cycle */ + fsync = fsync / 2; + snd_soc_component_update_bits(component, + CS42L42_FSYNC_PW_LOWER, + CS42L42_FSYNC_PULSE_WIDTH_MASK, + CS42L42_FRAC0_VAL(fsync - 1) << + CS42L42_FSYNC_PULSE_WIDTH_SHIFT); + snd_soc_component_update_bits(component, + CS42L42_FSYNC_PW_UPPER, + CS42L42_FSYNC_PULSE_WIDTH_MASK, + CS42L42_FRAC1_VAL(fsync - 1) << + CS42L42_FSYNC_PULSE_WIDTH_SHIFT); + + return 0; +} + static int cs42l42_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) { struct snd_soc_component *component = codec_dai->component; @@ -900,8 +905,6 @@ static int cs42l42_pcm_hw_params(struct snd_pcm_substream *substream, unsigned int bclk; int ret;

- cs42l42->srate = params_rate(params); - if (cs42l42->sclk) { /* machine driver has set the SCLK */ bclk = cs42l42->sclk; @@ -959,6 +962,10 @@ static int cs42l42_pcm_hw_params(struct snd_pcm_substream *substream, if (ret) return ret;

+ ret = cs42l42_asp_config(component, bclk, sample_rate); + if (ret) + return ret; + cs42l42_src_config(component, sample_rate);

return 0; diff --git a/sound/soc/codecs/cs42l42.h b/sound/soc/codecs/cs42l42.h index b4ba1467c558..2e4e01f9e389 100644 --- a/sound/soc/codecs/cs42l42.h +++ b/sound/soc/codecs/cs42l42.h @@ -31,7 +31,6 @@ struct cs42l42_private { struct mutex irq_lock; int pll_config; u32 sclk; - u32 srate; u8 plug_state; u8 hs_type; u8 ts_inv;