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ASoC: fsl_micfil: Drop get_pdm_clk()

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get_pdm_clk() calculates the PDM clock based on the quality setting,
but really the PDM clock is independent of the quality, it's always
rate * 4 * micfil->osr. Just drop the function and do the calculation
in the caller.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Shengjiu Wang <shengjiu.wang@gmail.com>
Link: https://lore.kernel.org/r/20220414162249.3934543-15-s.hauer@pengutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Sascha Hauer 2022-04-14 18:22:42 +02:00 committed by Mark Brown
parent fb855b8d46
commit be6aeee2eb
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 1 additions and 37 deletions
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38
sound/soc/fsl/fsl_micfil.c
View File

@ -110,42 +110,6 @@ static const struct snd_kcontrol_new fsl_micfil_snd_controls[] = {
snd_soc_get_enum_double, snd_soc_put_enum_double),
};
static inline int get_pdm_clk(struct fsl_micfil *micfil,
unsigned int rate)
{
u32 ctrl2_reg;
int qsel;
int bclk;
int osr = MICFIL_OSR_DEFAULT;
regmap_read(micfil->regmap, REG_MICFIL_CTRL2, &ctrl2_reg);
qsel = FIELD_GET(MICFIL_CTRL2_QSEL, ctrl2_reg);
switch (qsel) {
case MICFIL_QSEL_HIGH_QUALITY:
bclk = rate * 8 * osr / 2; /* kfactor = 0.5 */
break;
case MICFIL_QSEL_MEDIUM_QUALITY:
case MICFIL_QSEL_VLOW0_QUALITY:
bclk = rate * 4 * osr * 1; /* kfactor = 1 */
break;
case MICFIL_QSEL_LOW_QUALITY:
case MICFIL_QSEL_VLOW1_QUALITY:
bclk = rate * 2 * osr * 2; /* kfactor = 2 */
break;
case MICFIL_QSEL_VLOW2_QUALITY:
bclk = rate * osr * 4; /* kfactor = 4 */
break;
default:
dev_err(&micfil->pdev->dev,
"Please make sure you select a valid quality.\n");
bclk = -1;
break;
}
return bclk;
}
static inline int get_clk_div(struct fsl_micfil *micfil,
unsigned int rate)
{
@ -154,7 +118,7 @@ static inline int get_clk_div(struct fsl_micfil *micfil,
mclk_rate = clk_get_rate(micfil->mclk);
clk_div = mclk_rate / (get_pdm_clk(micfil, rate) * 2);
clk_div = mclk_rate / (rate * MICFIL_OSR_DEFAULT * 8);
return clk_div;
}