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ASoC: pcm3168a: refactor hw_params routine

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- group together code lines that calculate value for msad/msda field

- rename variables to better match their meaning:
    val -> ms,
    max_ratio -> num_scki_ratios

- update variable types to match exactly parameters or return types
  of the calls where those variables are used

- write two fields of the same register in a single regmap call

Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Link: https://lore.kernel.org/r/20220208084220.1289836-3-nikita.yoush@cogentembedded.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Nikita Yushchenko 2022-02-08 11:42:18 +03:00 committed by Mark Brown
parent 0c483a07e9
commit c7270209fc
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 31 additions and 40 deletions
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71
sound/soc/codecs/pcm3168a.c
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@ -462,40 +462,45 @@ static int pcm3168a_hw_params(struct snd_pcm_substream *substream,
struct pcm3168a_priv *pcm3168a = snd_soc_component_get_drvdata(component);
struct pcm3168a_io_params *io_params = &pcm3168a->io_params[dai->id];
bool master_mode;
u32 val, mask, shift, reg;
unsigned int rate, fmt, ratio, max_ratio;
unsigned int tdm_slots;
int i, slot_width;
rate = params_rate(params);
ratio = pcm3168a->sysclk / rate;
unsigned int reg, mask, ms, ms_shift, fmt, fmt_shift, ratio, tdm_slots;
int i, num_scki_ratios, slot_width;
if (dai->id == PCM3168A_DAI_DAC) {
max_ratio = PCM3168A_NUM_SCKI_RATIOS_DAC;
num_scki_ratios = PCM3168A_NUM_SCKI_RATIOS_DAC;
reg = PCM3168A_DAC_PWR_MST_FMT;
mask = PCM3168A_DAC_MSDA_MASK;
shift = PCM3168A_DAC_MSDA_SHIFT;
mask = PCM3168A_DAC_MSDA_MASK | PCM3168A_DAC_FMT_MASK;
ms_shift = PCM3168A_DAC_MSDA_SHIFT;
fmt_shift = PCM3168A_DAC_FMT_SHIFT;
} else {
max_ratio = PCM3168A_NUM_SCKI_RATIOS_ADC;
num_scki_ratios = PCM3168A_NUM_SCKI_RATIOS_ADC;
reg = PCM3168A_ADC_MST_FMT;
mask = PCM3168A_ADC_MSAD_MASK;
shift = PCM3168A_ADC_MSAD_SHIFT;
mask = PCM3168A_ADC_MSAD_MASK | PCM3168A_ADC_FMTAD_MASK;
ms_shift = PCM3168A_ADC_MSAD_SHIFT;
fmt_shift = PCM3168A_ADC_FMTAD_SHIFT;
}
master_mode = io_params->master_mode;
if (master_mode) {
ratio = pcm3168a->sysclk / params_rate(params);
for (i = 0; i < num_scki_ratios; i++) {
if (pcm3168a_scki_ratios[i] == ratio)
break;
}
if (i == num_scki_ratios) {
dev_err(component->dev, "unsupported sysclk ratio\n");
return -EINVAL;
}
ms = (i + 1);
} else {
ms = 0;
}
fmt = io_params->fmt;
for (i = 0; i < max_ratio; i++) {
if (pcm3168a_scki_ratios[i] == ratio)
break;
}
if (i == max_ratio) {
dev_err(component->dev, "unsupported sysclk ratio\n");
return -EINVAL;
}
if (io_params->slot_width)
slot_width = io_params->slot_width;
else
@ -553,22 +558,8 @@ static int pcm3168a_hw_params(struct snd_pcm_substream *substream,
}
}
if (master_mode)
val = ((i + 1) << shift);
else
val = 0;
regmap_update_bits(pcm3168a->regmap, reg, mask, val);
if (dai->id == PCM3168A_DAI_DAC) {
mask = PCM3168A_DAC_FMT_MASK;
shift = PCM3168A_DAC_FMT_SHIFT;
} else {
mask = PCM3168A_ADC_FMTAD_MASK;
shift = PCM3168A_ADC_FMTAD_SHIFT;
}
regmap_update_bits(pcm3168a->regmap, reg, mask, fmt << shift);
regmap_update_bits(pcm3168a->regmap, reg, mask,
(ms << ms_shift) | (fmt << fmt_shift));
return 0;
}