From d20b098dd98ec9e0a205ad59e32d93a636a783b3 Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Thu, 4 Jun 2015 16:04:29 +0300 Subject: [PATCH] ASoC: tas2552: Add support for word length configuration Configure the word length based on the params_width of the stream. Also configure the clock per frame value which is used when tas2552 is bus master. Signed-off-by: Peter Ujfalusi Signed-off-by: Mark Brown --- sound/soc/codecs/tas2552.c | 38 ++++++++++++++++++++++++++++++++++++++ sound/soc/codecs/tas2552.h | 10 ++++++++++ 2 files changed, 48 insertions(+) diff --git a/sound/soc/codecs/tas2552.c b/sound/soc/codecs/tas2552.c index 9c081344bd90..13b435f9a9b1 100644 --- a/sound/soc/codecs/tas2552.c +++ b/sound/soc/codecs/tas2552.c @@ -166,7 +166,45 @@ static int tas2552_hw_params(struct snd_pcm_substream *substream, struct tas2552_data *tas2552 = dev_get_drvdata(codec->dev); int sample_rate, pll_clk; int d; + int cpf; u8 p, j; + u8 ser_ctrl1_reg; + + switch (params_width(params)) { + case 16: + ser_ctrl1_reg = TAS2552_WORDLENGTH_16BIT; + cpf = 32 + tas2552->tdm_delay; + break; + case 20: + ser_ctrl1_reg = TAS2552_WORDLENGTH_20BIT; + cpf = 64 + tas2552->tdm_delay; + break; + case 24: + ser_ctrl1_reg = TAS2552_WORDLENGTH_24BIT; + cpf = 64 + tas2552->tdm_delay; + break; + case 32: + ser_ctrl1_reg = TAS2552_WORDLENGTH_32BIT; + cpf = 64 + tas2552->tdm_delay; + break; + default: + dev_err(codec->dev, "Not supported sample size: %d\n", + params_width(params)); + return -EINVAL; + } + + if (cpf <= 32) + ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_32; + else if (cpf <= 64) + ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_64; + else if (cpf <= 128) + ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_128; + else + ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_256; + + snd_soc_update_bits(codec, TAS2552_SER_CTRL_1, + TAS2552_WORDLENGTH_MASK | TAS2552_CLKSPERFRAME_MASK, + ser_ctrl1_reg); if (!tas2552->pll_clkin) return -EINVAL; diff --git a/sound/soc/codecs/tas2552.h b/sound/soc/codecs/tas2552.h index 5bdc7eaaddea..de0ab0d27520 100644 --- a/sound/soc/codecs/tas2552.h +++ b/sound/soc/codecs/tas2552.h @@ -66,11 +66,21 @@ #define TAS2552_SDOUT_TRISTATE (1 << 2) /* Serial Interface Control Register Masks */ +#define TAS2552_WORDLENGTH_16BIT (0x0 << 0) +#define TAS2552_WORDLENGTH_20BIT (0x1 << 0) +#define TAS2552_WORDLENGTH_24BIT (0x2 << 0) +#define TAS2552_WORDLENGTH_32BIT (0x3 << 0) +#define TAS2552_WORDLENGTH_MASK TAS2552_WORDLENGTH_32BIT #define TAS2552_DATAFORMAT_I2S (0x0 << 2) #define TAS2552_DATAFORMAT_DSP (0x1 << 2) #define TAS2552_DATAFORMAT_RIGHT_J (0x2 << 2) #define TAS2552_DATAFORMAT_LEFT_J (0x3 << 2) #define TAS2552_DATAFORMAT_MASK TAS2552_DATAFORMAT_LEFT_J +#define TAS2552_CLKSPERFRAME_32 (0x0 << 4) +#define TAS2552_CLKSPERFRAME_64 (0x1 << 4) +#define TAS2552_CLKSPERFRAME_128 (0x2 << 4) +#define TAS2552_CLKSPERFRAME_256 (0x3 << 4) +#define TAS2552_CLKSPERFRAME_MASK TAS2552_CLKSPERFRAME_256 #define TAS2552_BCLKDIR (1 << 6) #define TAS2552_WCLKDIR (1 << 7) -- 2.30.2