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authorRichard Fitzgerald <rf@opensource.cirrus.com>2021-08-05 17:11:07 +0100
committerMark Brown <broonie@kernel.org>2021-08-05 20:17:16 +0100
commite5ada3f6787a4d6234adc6f2f3ae35c6d5b71ba0 (patch)
tree2e2df7db4eba38a67648bc8da7eee25f7f33c927 /sound
parent3a5d89a9c6fe306d35dce4496abbb464c1454da0 (diff)
ASoC: cs42l42: Fix mono playback
I2S always has two LRCLK phases and both CH1 and CH2 of the RX must be enabled (corresponding to the low and high phases of LRCLK.) The selection of the valid data channels is done by setting the DAC CHA_SEL and CHB_SEL. CHA_SEL is always the first (left) channel, CHB_SEL depends on the number of active channels. Previously for mono ASP CH2 was not enabled, the result was playing mono data would not produce any audio output. Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com> Fixes: 621d65f3b868 ("ASoC: cs42l42: Provide finer control on playback path") Link: https://lore.kernel.org/r/20210805161111.10410-4-rf@opensource.cirrus.com Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound')
-rw-r--r--sound/soc/codecs/cs42l42.c15
-rw-r--r--sound/soc/codecs/cs42l42.h2
2 files changed, 15 insertions, 2 deletions
diff --git a/sound/soc/codecs/cs42l42.c b/sound/soc/codecs/cs42l42.c
index 29e0c8dc8466..99c022be94a6 100644
--- a/sound/soc/codecs/cs42l42.c
+++ b/sound/soc/codecs/cs42l42.c
@@ -460,8 +460,8 @@ static const struct snd_soc_dapm_widget cs42l42_dapm_widgets[] = {
SND_SOC_DAPM_OUTPUT("HP"),
SND_SOC_DAPM_DAC("DAC", NULL, CS42L42_PWR_CTL1, CS42L42_HP_PDN_SHIFT, 1),
SND_SOC_DAPM_MIXER("MIXER", CS42L42_PWR_CTL1, CS42L42_MIXER_PDN_SHIFT, 1, NULL, 0),
- SND_SOC_DAPM_AIF_IN("SDIN1", NULL, 0, CS42L42_ASP_RX_DAI0_EN, CS42L42_ASP_RX0_CH1_SHIFT, 0),
- SND_SOC_DAPM_AIF_IN("SDIN2", NULL, 1, CS42L42_ASP_RX_DAI0_EN, CS42L42_ASP_RX0_CH2_SHIFT, 0),
+ SND_SOC_DAPM_AIF_IN("SDIN1", NULL, 0, SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_AIF_IN("SDIN2", NULL, 1, SND_SOC_NOPM, 0, 0),
/* Playback Requirements */
SND_SOC_DAPM_SUPPLY("ASP DAI0", CS42L42_PWR_CTL1, CS42L42_ASP_DAI_PDN_SHIFT, 1, NULL, 0),
@@ -866,6 +866,17 @@ static int cs42l42_pcm_hw_params(struct snd_pcm_substream *substream,
snd_soc_component_update_bits(component, CS42L42_ASP_RX_DAI0_CH2_AP_RES,
CS42L42_ASP_RX_CH_AP_MASK |
CS42L42_ASP_RX_CH_RES_MASK, val);
+
+ /* Channel B comes from the last active channel */
+ snd_soc_component_update_bits(component, CS42L42_SP_RX_CH_SEL,
+ CS42L42_SP_RX_CHB_SEL_MASK,
+ (channels - 1) << CS42L42_SP_RX_CHB_SEL_SHIFT);
+
+ /* Both LRCLK slots must be enabled */
+ snd_soc_component_update_bits(component, CS42L42_ASP_RX_DAI0_EN,
+ CS42L42_ASP_RX0_CH_EN_MASK,
+ BIT(CS42L42_ASP_RX0_CH1_SHIFT) |
+ BIT(CS42L42_ASP_RX0_CH2_SHIFT));
break;
default:
break;
diff --git a/sound/soc/codecs/cs42l42.h b/sound/soc/codecs/cs42l42.h
index 3dfeaf6611d1..112ffcf938c3 100644
--- a/sound/soc/codecs/cs42l42.h
+++ b/sound/soc/codecs/cs42l42.h
@@ -653,6 +653,8 @@
/* Page 0x25 Audio Port Registers */
#define CS42L42_SP_RX_CH_SEL (CS42L42_PAGE_25 + 0x01)
+#define CS42L42_SP_RX_CHB_SEL_SHIFT 2
+#define CS42L42_SP_RX_CHB_SEL_MASK (3 << CS42L42_SP_RX_CHB_SEL_SHIFT)
#define CS42L42_SP_RX_ISOC_CTL (CS42L42_PAGE_25 + 0x02)
#define CS42L42_SP_RX_RSYNC_SHIFT 6