diff options
| author | Sascha Hauer <s.hauer@pengutronix.de> | 2022-04-14 19:22:42 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2022-04-19 14:06:23 +0300 |
| commit | be6aeee2eb82e5ae57f8cc613c0b6cc3e8d33664 (patch) | |
| tree | d210c649643120fa7f71573fbc85c77b9c9156f4 /sound/soc/fsl/fsl_micfil.c | |
| parent | fb855b8d46a17c9bb5562e315158de52b18b7e62 (diff) | |
| download | linux-be6aeee2eb82e5ae57f8cc613c0b6cc3e8d33664.tar.xz | |
ASoC: fsl_micfil: Drop get_pdm_clk()
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>
Diffstat (limited to 'sound/soc/fsl/fsl_micfil.c')
| -rw-r--r-- | sound/soc/fsl/fsl_micfil.c | 38 |
1 files changed, 1 insertions, 37 deletions
diff --git a/sound/soc/fsl/fsl_micfil.c b/sound/soc/fsl/fsl_micfil.c index a35c1c580dbc..3ddc988b4fe6 100644 --- a/sound/soc/fsl/fsl_micfil.c +++ b/sound/soc/fsl/fsl_micfil.c @@ -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; } |