From: Marcus Cooper codekipper@gmail.com
Some codecs require a different amount of a bit clocks per frame than what is calculated by the sample width. Use the tdm slot bindings to provide this mechanism.
Signed-off-by: Marcus Cooper codekipper@gmail.com --- sound/soc/sunxi/sun4i-i2s.c | 22 ++++++++++++++++++++-- 1 file changed, 20 insertions(+), 2 deletions(-)
diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c index 8cec2f42c94e..cfcf427270fd 100644 --- a/sound/soc/sunxi/sun4i-i2s.c +++ b/sound/soc/sunxi/sun4i-i2s.c @@ -196,6 +196,9 @@ struct sun4i_i2s { const struct sun4i_i2s_quirks *variant;
bool bit_clk_master; + + unsigned int tdm_slots; + unsigned int slot_width; };
struct sun4i_i2s_clk_div { @@ -385,7 +388,7 @@ static int sun4i_i2s_set_clk_rate(struct snd_soc_dai *dai, if (i2s->variant->has_fmt_set_lrck_period) regmap_update_bits(i2s->regmap, SUN4I_I2S_FMT0_REG, SUN8I_I2S_FMT0_LRCK_PERIOD_MASK, - SUN8I_I2S_FMT0_LRCK_PERIOD(32)); + SUN8I_I2S_FMT0_LRCK_PERIOD(word_size));
/* Set sign extension to pad out LSB with 0 */ regmap_field_write(i2s->field_fmt_sext, 0); @@ -498,7 +501,8 @@ static int sun4i_i2s_hw_params(struct snd_pcm_substream *substream, sr + i2s->variant->fmt_offset);
return sun4i_i2s_set_clk_rate(dai, params_rate(params), - params_width(params)); + i2s->tdm_slots ? + i2s->slot_width : params_width(params)); }
static int sun4i_i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) @@ -749,11 +753,25 @@ static int sun4i_i2s_set_sysclk(struct snd_soc_dai *dai, int clk_id, return 0; }
+static int sun4i_i2s_set_dai_tdm_slot(struct snd_soc_dai *dai, + unsigned int tx_mask, unsigned int rx_mask, + int slots, int width) +{ + struct sun4i_i2s *i2s = snd_soc_dai_get_drvdata(dai); + + i2s->tdm_slots = slots; + + i2s->slot_width = width; + + return 0; +} + static const struct snd_soc_dai_ops sun4i_i2s_dai_ops = { .hw_params = sun4i_i2s_hw_params, .set_fmt = sun4i_i2s_set_fmt, .set_sysclk = sun4i_i2s_set_sysclk, .trigger = sun4i_i2s_trigger, + .set_tdm_slot = sun4i_i2s_set_dai_tdm_slot, };
static int sun4i_i2s_dai_probe(struct snd_soc_dai *dai)