From 13c3bf174becfb8b55adcfeb6f01724dc99347f0 Mon Sep 17 00:00:00 2001 From: Vasily Khoruzhick Date: Wed, 17 Oct 2018 00:38:06 -0700 Subject: ASoC: sun8i-codec: Don't hardcode BCLK / LRCK ratio 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 Acked-by: Maxime Ripard Signed-off-by: Mark Brown --- sound/soc/sunxi/sun8i-codec.c | 22 +++++++++++++++++++--- 1 file changed, 19 insertions(+), 3 deletions(-) diff --git a/sound/soc/sunxi/sun8i-codec.c b/sound/soc/sunxi/sun8i-codec.c index fb37dd927e33..522a72fde78d 100644 --- a/sound/soc/sunxi/sun8i-codec.c +++ b/sound/soc/sunxi/sun8i-codec.c @@ -24,6 +24,7 @@ #include #include #include +#include #include #include @@ -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) -- cgit v1.2.3