[PATCH] ASoC: adau17x1: Avoid overwriting CHPF

[PATCH] ASoC: adau17x1: Avoid overwriting CHPF

[Niklas Carlsson]

From: Niklas Carlsson <niklasc@axis.com>

Configuring number of channels per LRCLK frame by using e.g.
snd_soc_dai_set_tdm_slot before configuring DAI format was being
overwritten by the latter due to a regmap_write which would write over
the whole register.

Signed-off-by: Niklas Carlsson <niklasc@axis.com>
---
 sound/soc/codecs/adau17x1.c | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/sound/soc/codecs/adau17x1.c b/sound/soc/codecs/adau17x1.c
index 546ee8178038..8aae7ab74091 100644
--- a/sound/soc/codecs/adau17x1.c
+++ b/sound/soc/codecs/adau17x1.c
@@ -553,6 +553,7 @@ static int adau17x1_set_dai_fmt(struct snd_soc_dai *dai,
 {
 	struct adau *adau = snd_soc_component_get_drvdata(dai->component);
 	unsigned int ctrl0, ctrl1;
+	unsigned int ctrl0_mask;
 	int lrclk_pol;
 
 	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
@@ -612,8 +613,16 @@ static int adau17x1_set_dai_fmt(struct snd_soc_dai *dai,
 	if (lrclk_pol)
 		ctrl0 |= ADAU17X1_SERIAL_PORT0_LRCLK_POL;
 
-	regmap_write(adau->regmap, ADAU17X1_SERIAL_PORT0, ctrl0);
-	regmap_write(adau->regmap, ADAU17X1_SERIAL_PORT1, ctrl1);
+	/* Set the mask to update all relevant bits in ADAU17X1_SERIAL_PORT0 */
+	ctrl0_mask = ADAU17X1_SERIAL_PORT0_MASTER |
+		     ADAU17X1_SERIAL_PORT0_LRCLK_POL |
+		     ADAU17X1_SERIAL_PORT0_BCLK_POL |
+		     ADAU17X1_SERIAL_PORT0_PULSE_MODE;
+
+	regmap_update_bits(adau->regmap, ADAU17X1_SERIAL_PORT0, ctrl0_mask,
+			   ctrl0);
+	regmap_update_bits(adau->regmap, ADAU17X1_SERIAL_PORT1,
+			   ADAU17X1_SERIAL_PORT1_DELAY_MASK, ctrl1);
 
 	adau->dai_fmt = fmt & SND_SOC_DAIFMT_FORMAT_MASK;
 
-- 
2.20.1

Re: [PATCH] ASoC: adau17x1: Avoid overwriting CHPF

[Mark Brown]

On Thu, 22 Apr 2021 15:02:26 +0200, Niklas Carlsson wrote:
> Configuring number of channels per LRCLK frame by using e.g.
> snd_soc_dai_set_tdm_slot before configuring DAI format was being
> overwritten by the latter due to a regmap_write which would write over
> the whole register.

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next

Thanks!

[1/1] ASoC: adau17x1: Avoid overwriting CHPF
      commit: a89f3a93cd20f77ac1f84089297258d4b409e280

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark