diff options
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/codecs/tlv320dac33.c | 106 |
1 files changed, 39 insertions, 67 deletions
diff --git a/sound/soc/codecs/tlv320dac33.c b/sound/soc/codecs/tlv320dac33.c index 54b2a05..329a97f 100644 --- a/sound/soc/codecs/tlv320dac33.c +++ b/sound/soc/codecs/tlv320dac33.c @@ -284,45 +284,49 @@ static int dac33_write16(struct snd_soc_codec *codec, unsigned int reg, return ret; } -static void dac33_restore_regs(struct snd_soc_codec *codec) +static void dac33_init_chip(struct snd_soc_codec *codec) { struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec); - u8 *cache = codec->reg_cache; - u8 data[2]; - int i, ret; - if (!dac33->chip_power) + if (unlikely(!dac33->chip_power)) return; - for (i = DAC33_PWR_CTRL; i <= DAC33_INTP_CTRL_B; i++) { - data[0] = i; - data[1] = cache[i]; - /* Skip the read only registers */ - if ((i >= DAC33_INT_OSC_STATUS && - i <= DAC33_INT_OSC_FREQ_RAT_READ_B) || - (i >= DAC33_FIFO_WPTR_MSB && i <= DAC33_FIFO_IRQ_FLAG) || - i == DAC33_DAC_STATUS_FLAGS || - i == DAC33_SRC_EST_REF_CLK_RATIO_A || - i == DAC33_SRC_EST_REF_CLK_RATIO_B) - continue; - ret = codec->hw_write(codec->control_data, data, 2); - if (ret != 2) - dev_err(codec->dev, "Write failed (%d)\n", ret); - } - for (i = DAC33_LDAC_PWR_CTRL; i <= DAC33_LINEL_TO_LLO_VOL; i++) { - data[0] = i; - data[1] = cache[i]; - ret = codec->hw_write(codec->control_data, data, 2); - if (ret != 2) - dev_err(codec->dev, "Write failed (%d)\n", ret); - } - for (i = DAC33_LINER_TO_RLO_VOL; i <= DAC33_OSC_TRIM; i++) { - data[0] = i; - data[1] = cache[i]; - ret = codec->hw_write(codec->control_data, data, 2); - if (ret != 2) - dev_err(codec->dev, "Write failed (%d)\n", ret); - } + /* 44-46: DAC Control Registers */ + /* A : DAC sample rate Fsref/1.5 */ + dac33_write(codec, DAC33_DAC_CTRL_A, DAC33_DACRATE(0)); + /* B : DAC src=normal, not muted */ + dac33_write(codec, DAC33_DAC_CTRL_B, DAC33_DACSRCR_RIGHT | + DAC33_DACSRCL_LEFT); + /* C : (defaults) */ + dac33_write(codec, DAC33_DAC_CTRL_C, 0x00); + + /* 64-65 : L&R DAC power control + Line In -> OUT 1V/V Gain, DAC -> OUT 4V/V Gain*/ + dac33_write(codec, DAC33_LDAC_PWR_CTRL, DAC33_LROUT_GAIN(2)); + dac33_write(codec, DAC33_RDAC_PWR_CTRL, DAC33_LROUT_GAIN(2)); + + /* 73 : volume soft stepping control, + clock source = internal osc (?) */ + dac33_write(codec, DAC33_ANA_VOL_SOFT_STEP_CTRL, DAC33_VOLCLKEN); + + /* 66 : LOP/LOM Modes */ + dac33_write(codec, DAC33_OUT_AMP_CM_CTRL, 0xff); + + /* 68 : LOM inverted from LOP */ + dac33_write(codec, DAC33_OUT_AMP_CTRL, (3<<2)); + + dac33_write(codec, DAC33_PWR_CTRL, DAC33_PDNALLB); + + /* Restore only selected registers (gains mostly) */ + dac33_write(codec, DAC33_LDAC_DIG_VOL_CTRL, + dac33_read_reg_cache(codec, DAC33_LDAC_DIG_VOL_CTRL)); + dac33_write(codec, DAC33_RDAC_DIG_VOL_CTRL, + dac33_read_reg_cache(codec, DAC33_RDAC_DIG_VOL_CTRL)); + + dac33_write(codec, DAC33_LINEL_TO_LLO_VOL, + dac33_read_reg_cache(codec, DAC33_LINEL_TO_LLO_VOL)); + dac33_write(codec, DAC33_LINER_TO_RLO_VOL, + dac33_read_reg_cache(codec, DAC33_LINER_TO_RLO_VOL)); } static inline void dac33_soft_power(struct snd_soc_codec *codec, int power) @@ -358,8 +362,7 @@ static int dac33_hard_power(struct snd_soc_codec *codec, int power) dac33->chip_power = 1; - /* Restore registers */ - dac33_restore_regs(codec); + dac33_init_chip(codec); dac33_soft_power(codec, 1); } else { @@ -1269,35 +1272,6 @@ static int dac33_set_dai_fmt(struct snd_soc_dai *codec_dai, return 0; } -static void dac33_init_chip(struct snd_soc_codec *codec) -{ - /* 44-46: DAC Control Registers */ - /* A : DAC sample rate Fsref/1.5 */ - dac33_write(codec, DAC33_DAC_CTRL_A, DAC33_DACRATE(0)); - /* B : DAC src=normal, not muted */ - dac33_write(codec, DAC33_DAC_CTRL_B, DAC33_DACSRCR_RIGHT | - DAC33_DACSRCL_LEFT); - /* C : (defaults) */ - dac33_write(codec, DAC33_DAC_CTRL_C, 0x00); - - /* 64-65 : L&R DAC power control - Line In -> OUT 1V/V Gain, DAC -> OUT 4V/V Gain*/ - dac33_write(codec, DAC33_LDAC_PWR_CTRL, DAC33_LROUT_GAIN(2)); - dac33_write(codec, DAC33_RDAC_PWR_CTRL, DAC33_LROUT_GAIN(2)); - - /* 73 : volume soft stepping control, - clock source = internal osc (?) */ - dac33_write(codec, DAC33_ANA_VOL_SOFT_STEP_CTRL, DAC33_VOLCLKEN); - - /* 66 : LOP/LOM Modes */ - dac33_write(codec, DAC33_OUT_AMP_CM_CTRL, 0xff); - - /* 68 : LOM inverted from LOP */ - dac33_write(codec, DAC33_OUT_AMP_CTRL, (3<<2)); - - dac33_write(codec, DAC33_PWR_CTRL, DAC33_PDNALLB); -} - static int dac33_soc_probe(struct platform_device *pdev) { struct snd_soc_device *socdev = platform_get_drvdata(pdev); @@ -1313,8 +1287,6 @@ static int dac33_soc_probe(struct platform_device *pdev) /* Power up the codec */ dac33_hard_power(codec, 1); - /* Set default configuration */ - dac33_init_chip(codec); /* register pcms */ ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); |
