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[18/21] ASoC: sun4i-i2s: Pass the channels number as an argument

Message ID 48887cf7abfaab6597db233b24d7a088a913e48a.1566242458.git-series.maxime.ripard@bootlin.com (mailing list archive)
State Accepted
Commit 0083a507a78fdfa868acc0709408b59e72488a61
Headers show
Series ASoC: sun4i-i2s: Number of fixes and TDM Support | expand

Commit Message

Maxime Ripard Aug. 19, 2019, 7:25 p.m. UTC 
From: Maxime Ripard <maxime.ripard@bootlin.com>

The channels number have been hardcoded to 2 so far, while the controller
supports more than that.

Remove the instance where it has been hardcoded to compute the BCLK
divider, and pass it through as an argument to ease further support of more
channels.

Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
---
 sound/soc/sunxi/sun4i-i2s.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c
index 5dcbab0b4bcb..905e9bd16024 100644
--- a/sound/soc/sunxi/sun4i-i2s.c
+++ b/sound/soc/sunxi/sun4i-i2s.c
@@ -238,10 +238,11 @@  static unsigned long sun8i_i2s_get_bclk_parent_rate(const struct sun4i_i2s *i2s)
 static int sun4i_i2s_get_bclk_div(struct sun4i_i2s *i2s,
 				  unsigned long parent_rate,
 				  unsigned int sampling_rate,
+				  unsigned int channels,
 				  unsigned int word_size)
 {
 	const struct sun4i_i2s_clk_div *dividers = i2s->variant->bclk_dividers;
-	int div = parent_rate / sampling_rate / word_size / 2;
+	int div = parent_rate / sampling_rate / word_size / channels;
 	int i;
 
 	for (i = 0; i < i2s->variant->num_bclk_dividers; i++) {
@@ -286,6 +287,7 @@  static bool sun4i_i2s_oversample_is_valid(unsigned int oversample)
 
 static int sun4i_i2s_set_clk_rate(struct snd_soc_dai *dai,
 				  unsigned int rate,
+				  unsigned int channels,
 				  unsigned int word_size)
 {
 	struct sun4i_i2s *i2s = snd_soc_dai_get_drvdata(dai);
@@ -333,7 +335,7 @@  static int sun4i_i2s_set_clk_rate(struct snd_soc_dai *dai,
 
 	bclk_parent_rate = i2s->variant->get_bclk_parent_rate(i2s);
 	bclk_div = sun4i_i2s_get_bclk_div(i2s, bclk_parent_rate,
-					  rate, word_size);
+					  rate, channels, word_size);
 	if (bclk_div < 0) {
 		dev_err(dai->dev, "Unsupported BCLK divider: %d\n", bclk_div);
 		return -EINVAL;
@@ -488,7 +490,7 @@  static int sun4i_i2s_hw_params(struct snd_pcm_substream *substream,
 	regmap_field_write(i2s->field_fmt_sr, sr);
 
 	return sun4i_i2s_set_clk_rate(dai, params_rate(params),
-				      params_width(params));
+				      2, params_width(params));
 }
 
 static int sun4i_i2s_set_soc_fmt(const struct sun4i_i2s *i2s,