diff options
Diffstat (limited to 'sound/soc/jz4740/jz4740-i2s.c')
| -rw-r--r-- | sound/soc/jz4740/jz4740-i2s.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/sound/soc/jz4740/jz4740-i2s.c b/sound/soc/jz4740/jz4740-i2s.c index d3d45c6..b7a7e82 100644 --- a/sound/soc/jz4740/jz4740-i2s.c +++ b/sound/soc/jz4740/jz4740-i2s.c @@ -83,6 +83,8 @@ #define JZ_AIC_I2S_STATUS_BUSY BIT(2) #define JZ_AIC_CLK_DIV_MASK 0xf +#define I2SDIV_DV_SHIFT 8 +#define I2SDIV_DV_MASK (0xf << I2SDIV_DV_SHIFT) struct jz4740_i2s { struct resource *mem; @@ -237,10 +239,14 @@ static int jz4740_i2s_hw_params(struct snd_pcm_substream *substream, { struct jz4740_i2s *i2s = snd_soc_dai_get_drvdata(dai); unsigned int sample_size; - uint32_t ctrl; + uint32_t ctrl, div_reg; + int div; ctrl = jz4740_i2s_read(i2s, JZ_REG_AIC_CTRL); + div_reg = jz4740_i2s_read(i2s, JZ_REG_AIC_CLK_DIV); + div = clk_get_rate(i2s->clk_i2s) / (64 * params_rate(params)); + switch (params_format(params)) { case SNDRV_PCM_FORMAT_S8: sample_size = 0; @@ -264,7 +270,10 @@ static int jz4740_i2s_hw_params(struct snd_pcm_substream *substream, ctrl |= sample_size << JZ_AIC_CTRL_INPUT_SAMPLE_SIZE_OFFSET; } + div_reg &= ~I2SDIV_DV_MASK; + div_reg |= (div - 1) << I2SDIV_DV_SHIFT; jz4740_i2s_write(i2s, JZ_REG_AIC_CTRL, ctrl); + jz4740_i2s_write(i2s, JZ_REG_AIC_CLK_DIV, div_reg); return 0; } |
