[PATCH RFC 5/6] ASoC: cs35l36: Implement set_tdm_slot to program RX slot register

[David Heidelberg via B4 Relay <devnull+david.ixit.cz@kernel.org>]

From: David Heidelberg <david@ixit.cz>

Program ASP_RX1_SLOT with the first set bit of rx_mask so the
amplifier listens on the correct TDM slot when configured by
machine drivers.

Assisted-by: Claude:claude-4.6-opus
Signed-off-by: David Heidelberg <david@ixit.cz>
---
 sound/soc/codecs/cs35l36.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/sound/soc/codecs/cs35l36.c b/sound/soc/codecs/cs35l36.c
index 89645327945f1..944f4cb5763e4 100644
--- a/sound/soc/codecs/cs35l36.c
+++ b/sound/soc/codecs/cs35l36.c
@@ -942,20 +942,36 @@ static const struct cs35l36_pll_config *cs35l36_get_clk_config(
 	for (i = 0; i < ARRAY_SIZE(cs35l36_pll_sysclk); i++) {
 		if (cs35l36_pll_sysclk[i].freq == freq)
 			return &cs35l36_pll_sysclk[i];
 	}
 
 	return NULL;
 }
 
+static int cs35l36_set_tdm_slot(struct snd_soc_dai *dai,
+				    unsigned int tx_mask, unsigned int rx_mask,
+				    int slots, int slot_width)
+{
+	struct cs35l36_private *cs35l36 =
+			snd_soc_component_get_drvdata(dai->component);
+
+	if (rx_mask)
+		regmap_update_bits(cs35l36->regmap, CS35L36_ASP_RX1_SLOT,
+				   CS35L36_ASP_RX1_SLOT_MASK,
+				   ffs(rx_mask) - 1);
+
+	return 0;
+}
+
 static const struct snd_soc_dai_ops cs35l36_ops = {
 	.set_fmt = cs35l36_set_dai_fmt,
 	.hw_params = cs35l36_pcm_hw_params,
 	.set_sysclk = cs35l36_dai_set_sysclk,
+	.set_tdm_slot = cs35l36_set_tdm_slot,
 };
 
 #define CS35L36_RATES (		    \
 	SNDRV_PCM_RATE_8000_48000 | \
 	SNDRV_PCM_RATE_12000 |	    \
 	SNDRV_PCM_RATE_24000 |	    \
 	SNDRV_PCM_RATE_88200 |	    \
 	SNDRV_PCM_RATE_96000 |	    \

-- 
2.53.0