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ASoC: sun8i-codec: Don't hardcode BCLK / LRCK ratio

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BCLK / LRCK ratio should be sample size * channels, but it was
hardcoded to 32 (0x1 is 32 as per A33 and A64 datasheets).

Calculate it basing on sample size and number of channels.

Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Vasily Khoruzhick 2018-10-17 00:38:06 -07:00 committed by Mark Brown
parent 66ecce3325
commit 13c3bf174b
No known key found for this signature in database
GPG key ID: 24D68B725D5487D0
1 changed files with 19 additions and 3 deletions
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22
sound/soc/sunxi/sun8i-codec.c
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@ -24,6 +24,7 @@
#include <linux/io.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <linux/log2.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
@ -52,7 +53,6 @@
#define SUN8I_AIF1CLK_CTRL_AIF1_LRCK_INV 13
#define SUN8I_AIF1CLK_CTRL_AIF1_BCLK_DIV 9
#define SUN8I_AIF1CLK_CTRL_AIF1_LRCK_DIV 6
#define SUN8I_AIF1CLK_CTRL_AIF1_LRCK_DIV_16 (1 << 6)
#define SUN8I_AIF1CLK_CTRL_AIF1_WORD_SIZ 4
#define SUN8I_AIF1CLK_CTRL_AIF1_WORD_SIZ_16 (1 << 4)
#define SUN8I_AIF1CLK_CTRL_AIF1_DATA_FMT 2
@ -300,12 +300,23 @@ static u8 sun8i_codec_get_bclk_div(struct sun8i_codec *scodec,
return best_val;
}
static int sun8i_codec_get_lrck_div(unsigned int channels,
unsigned int word_size)
{
unsigned int div = word_size * channels;
if (div < 16 || div > 256)
return -EINVAL;
return ilog2(div) - 4;
}
static int sun8i_codec_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct sun8i_codec *scodec = snd_soc_component_get_drvdata(dai->component);
int sample_rate;
int sample_rate, lrck_div;
u8 bclk_div;
/*
@ -321,9 +332,14 @@ static int sun8i_codec_hw_params(struct snd_pcm_substream *substream,
SUN8I_AIF1CLK_CTRL_AIF1_BCLK_DIV_MASK,
bclk_div << SUN8I_AIF1CLK_CTRL_AIF1_BCLK_DIV);
lrck_div = sun8i_codec_get_lrck_div(params_channels(params),
params_physical_width(params));
if (lrck_div < 0)
return lrck_div;
regmap_update_bits(scodec->regmap, SUN8I_AIF1CLK_CTRL,
SUN8I_AIF1CLK_CTRL_AIF1_LRCK_DIV_MASK,
SUN8I_AIF1CLK_CTRL_AIF1_LRCK_DIV_16);
lrck_div << SUN8I_AIF1CLK_CTRL_AIF1_LRCK_DIV);
sample_rate = sun8i_codec_get_hw_rate(params);
if (sample_rate < 0)