mirror of
https://github.com/torvalds/linux
synced 2024-11-05 18:23:50 +00:00
bdb2c74d44
The DAC powerdown bit is managed by DAPM. Manually powering down the DAC in the CODEC probe function may cause unnecessary power state transitions which can lead to click and pop noises. So leave the DAC powerdown bit in its default poweron-reset state and let DAPM do all the management. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Mark Brown <broonie@kernel.org>
392 lines
10 KiB
C
392 lines
10 KiB
C
/*
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* AD193X Audio Codec driver supporting AD1936/7/8/9
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*
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* Copyright 2010 Analog Devices Inc.
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*
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* Licensed under the GPL-2 or later.
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/device.h>
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#include <linux/regmap.h>
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#include <linux/slab.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/initval.h>
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#include <sound/soc.h>
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#include <sound/tlv.h>
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#include "ad193x.h"
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/* codec private data */
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struct ad193x_priv {
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struct regmap *regmap;
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int sysclk;
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};
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/*
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* AD193X volume/mute/de-emphasis etc. controls
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*/
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static const char * const ad193x_deemp[] = {"None", "48kHz", "44.1kHz", "32kHz"};
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static SOC_ENUM_SINGLE_DECL(ad193x_deemp_enum, AD193X_DAC_CTRL2, 1,
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ad193x_deemp);
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static const DECLARE_TLV_DB_MINMAX(adau193x_tlv, -9563, 0);
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static const struct snd_kcontrol_new ad193x_snd_controls[] = {
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/* DAC volume control */
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SOC_DOUBLE_R_TLV("DAC1 Volume", AD193X_DAC_L1_VOL,
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AD193X_DAC_R1_VOL, 0, 0xFF, 1, adau193x_tlv),
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SOC_DOUBLE_R_TLV("DAC2 Volume", AD193X_DAC_L2_VOL,
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AD193X_DAC_R2_VOL, 0, 0xFF, 1, adau193x_tlv),
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SOC_DOUBLE_R_TLV("DAC3 Volume", AD193X_DAC_L3_VOL,
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AD193X_DAC_R3_VOL, 0, 0xFF, 1, adau193x_tlv),
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SOC_DOUBLE_R_TLV("DAC4 Volume", AD193X_DAC_L4_VOL,
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AD193X_DAC_R4_VOL, 0, 0xFF, 1, adau193x_tlv),
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/* ADC switch control */
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SOC_DOUBLE("ADC1 Switch", AD193X_ADC_CTRL0, AD193X_ADCL1_MUTE,
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AD193X_ADCR1_MUTE, 1, 1),
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SOC_DOUBLE("ADC2 Switch", AD193X_ADC_CTRL0, AD193X_ADCL2_MUTE,
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AD193X_ADCR2_MUTE, 1, 1),
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/* DAC switch control */
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SOC_DOUBLE("DAC1 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL1_MUTE,
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AD193X_DACR1_MUTE, 1, 1),
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SOC_DOUBLE("DAC2 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL2_MUTE,
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AD193X_DACR2_MUTE, 1, 1),
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SOC_DOUBLE("DAC3 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL3_MUTE,
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AD193X_DACR3_MUTE, 1, 1),
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SOC_DOUBLE("DAC4 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL4_MUTE,
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AD193X_DACR4_MUTE, 1, 1),
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/* ADC high-pass filter */
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SOC_SINGLE("ADC High Pass Filter Switch", AD193X_ADC_CTRL0,
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AD193X_ADC_HIGHPASS_FILTER, 1, 0),
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/* DAC de-emphasis */
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SOC_ENUM("Playback Deemphasis", ad193x_deemp_enum),
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};
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static const struct snd_soc_dapm_widget ad193x_dapm_widgets[] = {
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SND_SOC_DAPM_DAC("DAC", "Playback", SND_SOC_NOPM, 0, 0),
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SND_SOC_DAPM_PGA("DAC Output", AD193X_DAC_CTRL0, 0, 1, NULL, 0),
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SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0),
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SND_SOC_DAPM_SUPPLY("PLL_PWR", AD193X_PLL_CLK_CTRL0, 0, 1, NULL, 0),
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SND_SOC_DAPM_SUPPLY("ADC_PWR", AD193X_ADC_CTRL0, 0, 1, NULL, 0),
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SND_SOC_DAPM_SUPPLY("SYSCLK", AD193X_PLL_CLK_CTRL0, 7, 0, NULL, 0),
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SND_SOC_DAPM_VMID("VMID"),
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SND_SOC_DAPM_OUTPUT("DAC1OUT"),
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SND_SOC_DAPM_OUTPUT("DAC2OUT"),
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SND_SOC_DAPM_OUTPUT("DAC3OUT"),
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SND_SOC_DAPM_OUTPUT("DAC4OUT"),
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SND_SOC_DAPM_INPUT("ADC1IN"),
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SND_SOC_DAPM_INPUT("ADC2IN"),
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};
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static const struct snd_soc_dapm_route audio_paths[] = {
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{ "DAC", NULL, "SYSCLK" },
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{ "DAC Output", NULL, "DAC" },
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{ "DAC Output", NULL, "VMID" },
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{ "ADC", NULL, "SYSCLK" },
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{ "DAC", NULL, "ADC_PWR" },
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{ "ADC", NULL, "ADC_PWR" },
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{ "DAC1OUT", NULL, "DAC Output" },
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{ "DAC2OUT", NULL, "DAC Output" },
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{ "DAC3OUT", NULL, "DAC Output" },
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{ "DAC4OUT", NULL, "DAC Output" },
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{ "ADC", NULL, "ADC1IN" },
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{ "ADC", NULL, "ADC2IN" },
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{ "SYSCLK", NULL, "PLL_PWR" },
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};
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/*
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* DAI ops entries
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*/
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static int ad193x_mute(struct snd_soc_dai *dai, int mute)
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{
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struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(dai->codec);
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if (mute)
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regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL2,
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AD193X_DAC_MASTER_MUTE,
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AD193X_DAC_MASTER_MUTE);
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else
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regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL2,
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AD193X_DAC_MASTER_MUTE, 0);
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return 0;
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}
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static int ad193x_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
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unsigned int rx_mask, int slots, int width)
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{
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struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(dai->codec);
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unsigned int channels;
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switch (slots) {
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case 2:
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channels = AD193X_2_CHANNELS;
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break;
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case 4:
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channels = AD193X_4_CHANNELS;
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break;
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case 8:
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channels = AD193X_8_CHANNELS;
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break;
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case 16:
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channels = AD193X_16_CHANNELS;
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break;
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default:
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return -EINVAL;
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}
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regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL1,
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AD193X_DAC_CHAN_MASK, channels << AD193X_DAC_CHAN_SHFT);
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regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL2,
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AD193X_ADC_CHAN_MASK, channels << AD193X_ADC_CHAN_SHFT);
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return 0;
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}
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static int ad193x_set_dai_fmt(struct snd_soc_dai *codec_dai,
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unsigned int fmt)
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{
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struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec_dai->codec);
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unsigned int adc_serfmt = 0;
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unsigned int adc_fmt = 0;
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unsigned int dac_fmt = 0;
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/* At present, the driver only support AUX ADC mode(SND_SOC_DAIFMT_I2S
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* with TDM) and ADC&DAC TDM mode(SND_SOC_DAIFMT_DSP_A)
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*/
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switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
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case SND_SOC_DAIFMT_I2S:
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adc_serfmt |= AD193X_ADC_SERFMT_TDM;
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break;
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case SND_SOC_DAIFMT_DSP_A:
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adc_serfmt |= AD193X_ADC_SERFMT_AUX;
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break;
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default:
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return -EINVAL;
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}
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switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
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case SND_SOC_DAIFMT_NB_NF: /* normal bit clock + frame */
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break;
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case SND_SOC_DAIFMT_NB_IF: /* normal bclk + invert frm */
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adc_fmt |= AD193X_ADC_LEFT_HIGH;
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dac_fmt |= AD193X_DAC_LEFT_HIGH;
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break;
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case SND_SOC_DAIFMT_IB_NF: /* invert bclk + normal frm */
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adc_fmt |= AD193X_ADC_BCLK_INV;
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dac_fmt |= AD193X_DAC_BCLK_INV;
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break;
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case SND_SOC_DAIFMT_IB_IF: /* invert bclk + frm */
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adc_fmt |= AD193X_ADC_LEFT_HIGH;
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adc_fmt |= AD193X_ADC_BCLK_INV;
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dac_fmt |= AD193X_DAC_LEFT_HIGH;
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dac_fmt |= AD193X_DAC_BCLK_INV;
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break;
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default:
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return -EINVAL;
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}
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switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
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case SND_SOC_DAIFMT_CBM_CFM: /* codec clk & frm master */
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adc_fmt |= AD193X_ADC_LCR_MASTER;
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adc_fmt |= AD193X_ADC_BCLK_MASTER;
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dac_fmt |= AD193X_DAC_LCR_MASTER;
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dac_fmt |= AD193X_DAC_BCLK_MASTER;
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break;
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case SND_SOC_DAIFMT_CBS_CFM: /* codec clk slave & frm master */
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adc_fmt |= AD193X_ADC_LCR_MASTER;
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dac_fmt |= AD193X_DAC_LCR_MASTER;
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break;
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case SND_SOC_DAIFMT_CBM_CFS: /* codec clk master & frame slave */
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adc_fmt |= AD193X_ADC_BCLK_MASTER;
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dac_fmt |= AD193X_DAC_BCLK_MASTER;
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break;
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case SND_SOC_DAIFMT_CBS_CFS: /* codec clk & frm slave */
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break;
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default:
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return -EINVAL;
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}
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regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL1,
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AD193X_ADC_SERFMT_MASK, adc_serfmt);
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regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL2,
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AD193X_ADC_FMT_MASK, adc_fmt);
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regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL1,
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AD193X_DAC_FMT_MASK, dac_fmt);
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return 0;
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}
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static int ad193x_set_dai_sysclk(struct snd_soc_dai *codec_dai,
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int clk_id, unsigned int freq, int dir)
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{
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struct snd_soc_codec *codec = codec_dai->codec;
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struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec);
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switch (freq) {
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case 12288000:
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case 18432000:
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case 24576000:
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case 36864000:
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ad193x->sysclk = freq;
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return 0;
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}
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return -EINVAL;
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}
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static int ad193x_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params,
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struct snd_soc_dai *dai)
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{
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int word_len = 0, master_rate = 0;
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struct snd_soc_codec *codec = dai->codec;
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struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec);
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/* bit size */
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switch (params_width(params)) {
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case 16:
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word_len = 3;
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break;
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case 20:
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word_len = 1;
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break;
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case 24:
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case 32:
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word_len = 0;
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break;
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}
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switch (ad193x->sysclk) {
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case 12288000:
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master_rate = AD193X_PLL_INPUT_256;
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break;
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case 18432000:
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master_rate = AD193X_PLL_INPUT_384;
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break;
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case 24576000:
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master_rate = AD193X_PLL_INPUT_512;
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break;
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case 36864000:
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master_rate = AD193X_PLL_INPUT_768;
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break;
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}
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regmap_update_bits(ad193x->regmap, AD193X_PLL_CLK_CTRL0,
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AD193X_PLL_INPUT_MASK, master_rate);
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regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL2,
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AD193X_DAC_WORD_LEN_MASK,
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word_len << AD193X_DAC_WORD_LEN_SHFT);
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regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL1,
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AD193X_ADC_WORD_LEN_MASK, word_len);
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return 0;
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}
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static const struct snd_soc_dai_ops ad193x_dai_ops = {
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.hw_params = ad193x_hw_params,
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.digital_mute = ad193x_mute,
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.set_tdm_slot = ad193x_set_tdm_slot,
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.set_sysclk = ad193x_set_dai_sysclk,
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.set_fmt = ad193x_set_dai_fmt,
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};
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/* codec DAI instance */
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static struct snd_soc_dai_driver ad193x_dai = {
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.name = "ad193x-hifi",
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.playback = {
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.stream_name = "Playback",
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.channels_min = 2,
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.channels_max = 8,
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.rates = SNDRV_PCM_RATE_48000,
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.formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE |
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SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE,
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},
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.capture = {
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.stream_name = "Capture",
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.channels_min = 2,
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.channels_max = 4,
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.rates = SNDRV_PCM_RATE_48000,
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.formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE |
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SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE,
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},
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.ops = &ad193x_dai_ops,
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};
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static int ad193x_codec_probe(struct snd_soc_codec *codec)
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{
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struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec);
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/* default setting for ad193x */
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/* unmute dac channels */
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regmap_write(ad193x->regmap, AD193X_DAC_CHNL_MUTE, 0x0);
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/* de-emphasis: 48kHz, powedown dac */
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regmap_write(ad193x->regmap, AD193X_DAC_CTRL2, 0x1A);
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/* dac in tdm mode */
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regmap_write(ad193x->regmap, AD193X_DAC_CTRL0, 0x40);
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/* high-pass filter enable */
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regmap_write(ad193x->regmap, AD193X_ADC_CTRL0, 0x3);
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/* sata delay=1, adc aux mode */
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regmap_write(ad193x->regmap, AD193X_ADC_CTRL1, 0x43);
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/* pll input: mclki/xi */
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regmap_write(ad193x->regmap, AD193X_PLL_CLK_CTRL0, 0x99); /* mclk=24.576Mhz: 0x9D; mclk=12.288Mhz: 0x99 */
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regmap_write(ad193x->regmap, AD193X_PLL_CLK_CTRL1, 0x04);
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return 0;
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}
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static struct snd_soc_codec_driver soc_codec_dev_ad193x = {
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.probe = ad193x_codec_probe,
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.controls = ad193x_snd_controls,
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.num_controls = ARRAY_SIZE(ad193x_snd_controls),
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.dapm_widgets = ad193x_dapm_widgets,
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.num_dapm_widgets = ARRAY_SIZE(ad193x_dapm_widgets),
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.dapm_routes = audio_paths,
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.num_dapm_routes = ARRAY_SIZE(audio_paths),
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};
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static bool adau193x_reg_volatile(struct device *dev, unsigned int reg)
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{
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return false;
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}
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const struct regmap_config ad193x_regmap_config = {
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.max_register = AD193X_NUM_REGS - 1,
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.volatile_reg = adau193x_reg_volatile,
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};
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EXPORT_SYMBOL_GPL(ad193x_regmap_config);
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int ad193x_probe(struct device *dev, struct regmap *regmap)
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{
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struct ad193x_priv *ad193x;
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if (IS_ERR(regmap))
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return PTR_ERR(regmap);
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ad193x = devm_kzalloc(dev, sizeof(*ad193x), GFP_KERNEL);
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if (ad193x == NULL)
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return -ENOMEM;
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ad193x->regmap = regmap;
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dev_set_drvdata(dev, ad193x);
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return snd_soc_register_codec(dev, &soc_codec_dev_ad193x,
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&ad193x_dai, 1);
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}
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EXPORT_SYMBOL_GPL(ad193x_probe);
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MODULE_DESCRIPTION("ASoC ad193x driver");
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MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
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MODULE_LICENSE("GPL");
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