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ASoC: sun8i-codec: Support the TDM slot binding 

Now that BCLK and LRCK rate calculations in the driver can handle any
hardware-supported slot width and number of slots, allow overriding
those parameters from the device tree.

Acked-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Samuel Holland <samuel@sholland.org>
Link: https://lore.kernel.org/r/20201014061941.4306-8-samuel@sholland.org
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Samuel Holland 2020-10-14 01:19:31 -05:00 committed by Mark Brown
parent 68a4f2caaa
commit afb1a60062
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 26 additions and 2 deletions
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28
sound/soc/sunxi/sun8i-codec.c
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@ -99,6 +99,11 @@ enum {
SUN8I_CODEC_NAIFS
};
struct sun8i_codec_aif {
unsigned int slots;
unsigned int slot_width;
};
struct sun8i_codec_quirks {
bool legacy_widgets : 1;
bool lrck_inversion : 1;
@ -108,6 +113,7 @@ struct sun8i_codec {
struct regmap *regmap;
struct clk *clk_module;
const struct sun8i_codec_quirks *quirks;
struct sun8i_codec_aif aifs[SUN8I_CODEC_NAIFS];
};
static int sun8i_codec_runtime_resume(struct device *dev)
@ -261,6 +267,22 @@ static int sun8i_codec_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
return 0;
}
static int sun8i_codec_set_tdm_slot(struct snd_soc_dai *dai,
unsigned int tx_mask, unsigned int rx_mask,
int slots, int slot_width)
{
struct sun8i_codec *scodec = snd_soc_dai_get_drvdata(dai);
struct sun8i_codec_aif *aif = &scodec->aifs[dai->id];
if (slot_width && !is_power_of_2(slot_width))
return -EINVAL;
aif->slots = slots;
aif->slot_width = slot_width;
return 0;
}
struct sun8i_codec_clk_div {
u8 div;
u8 val;
@ -321,8 +343,9 @@ static int sun8i_codec_hw_params(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct sun8i_codec *scodec = snd_soc_dai_get_drvdata(dai);
unsigned int slots = params_channels(params);
unsigned int slot_width = params_width(params);
struct sun8i_codec_aif *aif = &scodec->aifs[dai->id];
unsigned int slots = aif->slots ?: params_channels(params);
unsigned int slot_width = aif->slot_width ?: params_width(params);
int lrck_div_order, sample_rate, word_size;
u8 bclk_div;
@ -376,6 +399,7 @@ static int sun8i_codec_hw_params(struct snd_pcm_substream *substream,
static const struct snd_soc_dai_ops sun8i_codec_dai_ops = {
.set_fmt = sun8i_codec_set_fmt,
.set_tdm_slot = sun8i_codec_set_tdm_slot,
.hw_params = sun8i_codec_hw_params,
};