Currently, pcm512x driver supports only I2S data format.
This commit adds RJ, LJ, DSP_A and DSP_B as well.
I don't expect regression WRT existing sound cards, because:
* default value in corresponding register of pcm512x codec is 0 == I2S
* existing in-tree sound cards with pcm512x codec are configured for I2S
* i don't see how existing off-tree sound cards with pcm512x codec could be
configured differently - it would not work
* tested explicitly, that there is no regression with Raspberry Pi +
sound card `sound/soc/bcm/hifiberry_dacplus.c`
Signed-off-by: Kirill Marinushkin <kmarinush...@birdec.com>
Cc: Mark Brown <broo...@kernel.org>
Cc: Takashi Iwai <ti...@suse.com>
Cc: Liam Girdwood <lgirdw...@gmail.com>
Cc: Matthias Reichl <h...@horus.com>
Cc: Kuninori Morimoto <kuninori.morimoto...@renesas.com>
Cc: Peter Ujfalusi <peter.ujfal...@ti.com>
Cc: alsa-de...@alsa-project.org
Cc: linux-kernel@vger.kernel.org
---
sound/soc/codecs/pcm512x.c | 38 ++++++++++++++++++++++++++++++++++++++
1 file changed, 38 insertions(+)
diff --git a/sound/soc/codecs/pcm512x.c b/sound/soc/codecs/pcm512x.c
index 8153d3d01654..e309227649e7 100644
--- a/sound/soc/codecs/pcm512x.c
+++ b/sound/soc/codecs/pcm512x.c
@@ -1167,6 +1167,8 @@ static int pcm512x_hw_params(struct snd_pcm_substream
*substream,
struct snd_soc_component *component = dai->component;
struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
int alen;
+ int afmt;
+ int offset = 0;
int gpio;
int clock_output;
int master_mode;
@@ -1195,6 +1197,28 @@ static int pcm512x_hw_params(struct snd_pcm_substream
*substream,
return -EINVAL;
}
+ switch (pcm512x->fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ afmt = PCM512x_AFMT_I2S;
+ break;
+ case SND_SOC_DAIFMT_RIGHT_J:
+ afmt = PCM512x_AFMT_RTJ;
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ afmt = PCM512x_AFMT_LTJ;
+ break;
+ case SND_SOC_DAIFMT_DSP_A:
+ offset = 1;
+ fallthrough;
+ case SND_SOC_DAIFMT_DSP_B:
+ afmt = PCM512x_AFMT_DSP;
+ break;
+ default:
+ dev_err(component->dev, "unsupported DAI format: 0x%x\n",
+ pcm512x->fmt);
+ return -EINVAL;
+ }
+
switch (pcm512x->fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBS_CFS:
ret = regmap_update_bits(pcm512x->regmap,
@@ -1236,6 +1260,20 @@ static int pcm512x_hw_params(struct snd_pcm_substream
*substream,
return ret;
}
+ ret = regmap_update_bits(pcm512x->regmap, PCM512x_I2S_1,
+ PCM512x_AFMT, afmt);
+ if (ret != 0) {
+ dev_err(component->dev, "Failed to set data format: %d\n", ret);
+ return ret;
+ }
+
+ ret = regmap_update_bits(pcm512x->regmap, PCM512x_I2S_2,
+ 0xFF, offset);
+ if (ret != 0) {
+ dev_err(component->dev, "Failed to set data offset: %d\n", ret);
+ return ret;
+ }
+
if (pcm512x->pll_out) {
ret = regmap_write(pcm512x->regmap, PCM512x_FLEX_A, 0x11);
if (ret != 0) {
--
2.13.6
