We can reduce the code size here a bit by using snd_soc_update_bits instead of open-coding the read-modify-write cycle. The conversion done in this patch is not completely straightforward and some minor code restructuring has been incorporated to further reduce the code size.
Signed-off-by: Lars-Peter Clausen lars@metafoo.de --- sound/soc/codecs/ad193x.c | 96 +++++++++++++++++---------------------------- sound/soc/codecs/ad193x.h | 17 ++++---- 2 files changed, 45 insertions(+), 68 deletions(-)
diff --git a/sound/soc/codecs/ad193x.c b/sound/soc/codecs/ad193x.c index c19e223..7d64f20 100644 --- a/sound/soc/codecs/ad193x.c +++ b/sound/soc/codecs/ad193x.c @@ -123,35 +123,29 @@ static int ad193x_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask, unsigned int rx_mask, int slots, int width) { struct snd_soc_codec *codec = dai->codec; - int dac_reg = snd_soc_read(codec, AD193X_DAC_CTRL1); - int adc_reg = snd_soc_read(codec, AD193X_ADC_CTRL2); - - dac_reg &= ~AD193X_DAC_CHAN_MASK; - adc_reg &= ~AD193X_ADC_CHAN_MASK; + unsigned int channels;
switch (slots) { case 2: - dac_reg |= AD193X_DAC_2_CHANNELS << AD193X_DAC_CHAN_SHFT; - adc_reg |= AD193X_ADC_2_CHANNELS << AD193X_ADC_CHAN_SHFT; + channels = AD193X_2_CHANNELS; break; case 4: - dac_reg |= AD193X_DAC_4_CHANNELS << AD193X_DAC_CHAN_SHFT; - adc_reg |= AD193X_ADC_4_CHANNELS << AD193X_ADC_CHAN_SHFT; + channels = AD193X_4_CHANNELS; break; case 8: - dac_reg |= AD193X_DAC_8_CHANNELS << AD193X_DAC_CHAN_SHFT; - adc_reg |= AD193X_ADC_8_CHANNELS << AD193X_ADC_CHAN_SHFT; + channels = AD193X_8_CHANNELS; break; case 16: - dac_reg |= AD193X_DAC_16_CHANNELS << AD193X_DAC_CHAN_SHFT; - adc_reg |= AD193X_ADC_16_CHANNELS << AD193X_ADC_CHAN_SHFT; + channels = AD193X_16_CHANNELS; break; default: return -EINVAL; }
- snd_soc_write(codec, AD193X_DAC_CTRL1, dac_reg); - snd_soc_write(codec, AD193X_ADC_CTRL2, adc_reg); + snd_soc_update_bits(codec, AD193X_DAC_CTRL1, AD193X_DAC_CHAN_MASK, + channels << AD193X_DAC_CHAN_SHFT); + snd_soc_update_bits(codec, AD193X_ADC_CTRL2, AD193X_ADC_CHAN_MASK, + channels << AD193X_ADC_CHAN_SHFT);
return 0; } @@ -160,23 +154,19 @@ static int ad193x_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) { struct snd_soc_codec *codec = codec_dai->codec; - int adc_reg1, adc_reg2, dac_reg; - - adc_reg1 = snd_soc_read(codec, AD193X_ADC_CTRL1); - adc_reg2 = snd_soc_read(codec, AD193X_ADC_CTRL2); - dac_reg = snd_soc_read(codec, AD193X_DAC_CTRL1); + unsigned int adc_serfmt = 0; + unsigned int adc_fmt = 0; + unsigned int dac_fmt = 0;
/* At present, the driver only support AUX ADC mode(SND_SOC_DAIFMT_I2S * with TDM) and ADC&DAC TDM mode(SND_SOC_DAIFMT_DSP_A) */ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { case SND_SOC_DAIFMT_I2S: - adc_reg1 &= ~AD193X_ADC_SERFMT_MASK; - adc_reg1 |= AD193X_ADC_SERFMT_TDM; + adc_serfmt |= AD193X_ADC_SERFMT_TDM; break; case SND_SOC_DAIFMT_DSP_A: - adc_reg1 &= ~AD193X_ADC_SERFMT_MASK; - adc_reg1 |= AD193X_ADC_SERFMT_AUX; + adc_serfmt |= AD193X_ADC_SERFMT_AUX; break; default: return -EINVAL; @@ -184,29 +174,20 @@ static int ad193x_set_dai_fmt(struct snd_soc_dai *codec_dai,
switch (fmt & SND_SOC_DAIFMT_INV_MASK) { case SND_SOC_DAIFMT_NB_NF: /* normal bit clock + frame */ - adc_reg2 &= ~AD193X_ADC_LEFT_HIGH; - adc_reg2 &= ~AD193X_ADC_BCLK_INV; - dac_reg &= ~AD193X_DAC_LEFT_HIGH; - dac_reg &= ~AD193X_DAC_BCLK_INV; break; case SND_SOC_DAIFMT_NB_IF: /* normal bclk + invert frm */ - adc_reg2 |= AD193X_ADC_LEFT_HIGH; - adc_reg2 &= ~AD193X_ADC_BCLK_INV; - dac_reg |= AD193X_DAC_LEFT_HIGH; - dac_reg &= ~AD193X_DAC_BCLK_INV; + adc_fmt |= AD193X_ADC_LEFT_HIGH; + dac_fmt |= AD193X_DAC_LEFT_HIGH; break; case SND_SOC_DAIFMT_IB_NF: /* invert bclk + normal frm */ - adc_reg2 &= ~AD193X_ADC_LEFT_HIGH; - adc_reg2 |= AD193X_ADC_BCLK_INV; - dac_reg &= ~AD193X_DAC_LEFT_HIGH; - dac_reg |= AD193X_DAC_BCLK_INV; + adc_fmt |= AD193X_ADC_BCLK_INV; + dac_fmt |= AD193X_DAC_BCLK_INV; break; - case SND_SOC_DAIFMT_IB_IF: /* invert bclk + frm */ - adc_reg2 |= AD193X_ADC_LEFT_HIGH; - adc_reg2 |= AD193X_ADC_BCLK_INV; - dac_reg |= AD193X_DAC_LEFT_HIGH; - dac_reg |= AD193X_DAC_BCLK_INV; + adc_fmt |= AD193X_ADC_LEFT_HIGH; + adc_fmt |= AD193X_ADC_BCLK_INV; + dac_fmt |= AD193X_DAC_LEFT_HIGH; + dac_fmt |= AD193X_DAC_BCLK_INV; break; default: return -EINVAL; @@ -214,36 +195,31 @@ static int ad193x_set_dai_fmt(struct snd_soc_dai *codec_dai,
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { case SND_SOC_DAIFMT_CBM_CFM: /* codec clk & frm master */ - adc_reg2 |= AD193X_ADC_LCR_MASTER; - adc_reg2 |= AD193X_ADC_BCLK_MASTER; - dac_reg |= AD193X_DAC_LCR_MASTER; - dac_reg |= AD193X_DAC_BCLK_MASTER; + adc_fmt |= AD193X_ADC_LCR_MASTER; + adc_fmt |= AD193X_ADC_BCLK_MASTER; + dac_fmt |= AD193X_DAC_LCR_MASTER; + dac_fmt |= AD193X_DAC_BCLK_MASTER; break; case SND_SOC_DAIFMT_CBS_CFM: /* codec clk slave & frm master */ - adc_reg2 |= AD193X_ADC_LCR_MASTER; - adc_reg2 &= ~AD193X_ADC_BCLK_MASTER; - dac_reg |= AD193X_DAC_LCR_MASTER; - dac_reg &= ~AD193X_DAC_BCLK_MASTER; + adc_fmt |= AD193X_ADC_LCR_MASTER; + dac_fmt |= AD193X_DAC_LCR_MASTER; break; case SND_SOC_DAIFMT_CBM_CFS: /* codec clk master & frame slave */ - adc_reg2 &= ~AD193X_ADC_LCR_MASTER; - adc_reg2 |= AD193X_ADC_BCLK_MASTER; - dac_reg &= ~AD193X_DAC_LCR_MASTER; - dac_reg |= AD193X_DAC_BCLK_MASTER; + adc_fmt |= AD193X_ADC_BCLK_MASTER; + dac_fmt |= AD193X_DAC_BCLK_MASTER; break; case SND_SOC_DAIFMT_CBS_CFS: /* codec clk & frm slave */ - adc_reg2 &= ~AD193X_ADC_LCR_MASTER; - adc_reg2 &= ~AD193X_ADC_BCLK_MASTER; - dac_reg &= ~AD193X_DAC_LCR_MASTER; - dac_reg &= ~AD193X_DAC_BCLK_MASTER; break; default: return -EINVAL; }
- snd_soc_write(codec, AD193X_ADC_CTRL1, adc_reg1); - snd_soc_write(codec, AD193X_ADC_CTRL2, adc_reg2); - snd_soc_write(codec, AD193X_DAC_CTRL1, dac_reg); + snd_soc_update_bits(codec, AD193X_ADC_CTRL1, AD193X_ADC_SERFMT_MASK, + adc_serfmt); + snd_soc_update_bits(codec, AD193X_ADC_CTRL2, AD193X_ADC_FMT_MASK, + adc_fmt); + snd_soc_update_bits(codec, AD193X_DAC_CTRL1, AD193X_DAC_FMT_MASK, + dac_fmt);
return 0; } diff --git a/sound/soc/codecs/ad193x.h b/sound/soc/codecs/ad193x.h index 1507eaa..4733880 100644 --- a/sound/soc/codecs/ad193x.h +++ b/sound/soc/codecs/ad193x.h @@ -23,16 +23,14 @@ #define AD193X_DAC_SERFMT_STEREO (0 << 6) #define AD193X_DAC_SERFMT_TDM (1 << 6) #define AD193X_DAC_CTRL1 0x03 -#define AD193X_DAC_2_CHANNELS 0 -#define AD193X_DAC_4_CHANNELS 1 -#define AD193X_DAC_8_CHANNELS 2 -#define AD193X_DAC_16_CHANNELS 3 #define AD193X_DAC_CHAN_SHFT 1 #define AD193X_DAC_CHAN_MASK (3 << AD193X_DAC_CHAN_SHFT) #define AD193X_DAC_LCR_MASTER (1 << 4) #define AD193X_DAC_BCLK_MASTER (1 << 5) #define AD193X_DAC_LEFT_HIGH (1 << 3) #define AD193X_DAC_BCLK_INV (1 << 7) +#define AD193X_DAC_FMT_MASK (AD193X_DAC_LCR_MASTER | \ + AD193X_DAC_BCLK_MASTER | AD193X_DAC_LEFT_HIGH | AD193X_DAC_BCLK_INV) #define AD193X_DAC_CTRL2 0x04 #define AD193X_DAC_WORD_LEN_SHFT 3 #define AD193X_DAC_WORD_LEN_MASK 0x18 @@ -68,16 +66,19 @@ #define AD193X_ADC_SERFMT_AUX (2 << 5) #define AD193X_ADC_WORD_LEN_MASK 0x3 #define AD193X_ADC_CTRL2 0x10 -#define AD193X_ADC_2_CHANNELS 0 -#define AD193X_ADC_4_CHANNELS 1 -#define AD193X_ADC_8_CHANNELS 2 -#define AD193X_ADC_16_CHANNELS 3 #define AD193X_ADC_CHAN_SHFT 4 #define AD193X_ADC_CHAN_MASK (3 << AD193X_ADC_CHAN_SHFT) #define AD193X_ADC_LCR_MASTER (1 << 3) #define AD193X_ADC_BCLK_MASTER (1 << 6) #define AD193X_ADC_LEFT_HIGH (1 << 2) #define AD193X_ADC_BCLK_INV (1 << 1) +#define AD193X_ADC_FMT_MASK (AD193X_ADC_LCR_MASTER | \ + AD193X_ADC_BCLK_MASTER | AD193X_ADC_LEFT_HIGH | AD193X_ADC_BCLK_INV) + +#define AD193X_2_CHANNELS 0 +#define AD193X_4_CHANNELS 1 +#define AD193X_8_CHANNELS 2 +#define AD193X_16_CHANNELS 3
#define AD193X_NUM_REGS 17