[PATCH 3/4] ASoC: fsl_asrc: always use ratio for conversion

Arnaud Ferraris
2020-07-02T14:26:14Z

Even when not in "Ideal Ratio" mode, ASRC can use an internally measured
ratio, which greatly improves the conversion quality.

This patch ensures we always use at least the internal ratio.

Signed-off-by: Arnaud Ferraris <arnaud.ferraris@collabora.com>
---
sound/soc/fsl/fsl_asrc.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/sound/soc/fsl/fsl_asrc.c b/sound/soc/fsl/fsl_asrc.c
index 75df220e4b51..65e7307a3df0 100644
--- a/sound/soc/fsl/fsl_asrc.c
+++ b/sound/soc/fsl/fsl_asrc.c
@@ -451,7 +451,7 @@ static int fsl_asrc_config_pair(struct fsl_asrc_pair *pair, bool use_ideal_rate)
regmap_update_bits(asrc->regmap, REG_ASRCTR,
ASRCTR_ATSi_MASK(index), ASRCTR_ATS(index));
regmap_update_bits(asrc->regmap, REG_ASRCTR,
- ASRCTR_USRi_MASK(index), 0);
+ ASRCTR_USRi_MASK(index), ASRCTR_USR(index));

/* Set the input and output clock sources */
regmap_update_bits(asrc->regmap, REG_ASRCSR,
@@ -493,8 +493,7 @@ static int fsl_asrc_config_pair(struct fsl_asrc_pair *pair, bool use_ideal_rate)

/* Enable Ideal Ratio mode */
regmap_update_bits(asrc->regmap, REG_ASRCTR,
- ASRCTR_IDRi_MASK(index) | ASRCTR_USRi_MASK(index),
- ASRCTR_IDR(index) | ASRCTR_USR(index));
+ ASRCTR_IDRi_MASK(index), ASRCTR_IDR(index));

fsl_asrc_sel_proc(inrate, outrate, &pre_proc, &post_proc);

--
2.27.0