// SPDX-License-Identifier: GPL-2.0-or-later /* * Audio Codec driver supporting: * AD1835A, AD1836, AD1837A, AD1838A, AD1839A * * Copyright 2009-2011 Analog Devices Inc. */ #include <linux/init.h> #include <linux/slab.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/device.h> #include <sound/core.h> #include <sound/pcm.h> #include <sound/pcm_params.h> #include <sound/initval.h> #include <sound/soc.h> #include <sound/tlv.h> #include <linux/spi/spi.h> #include <linux/regmap.h> #include "ad1836.h" enum ad1836_type { AD1835, AD1836, AD1838, }; /* codec private data */ struct ad1836_priv { enum ad1836_type type; struct regmap *regmap; }; /* * AD1836 volume/mute/de-emphasis etc. controls */ static const char *ad1836_deemp[] = {"None", "44.1kHz", "32kHz", "48kHz"}; static SOC_ENUM_SINGLE_DECL(ad1836_deemp_enum, AD1836_DAC_CTRL1, 8, ad1836_deemp); #define AD1836_DAC_VOLUME(x) \ SOC_DOUBLE_R("DAC" #x " Playback Volume", AD1836_DAC_L_VOL(x), \ AD1836_DAC_R_VOL(x), 0, 0x3FF, 0) #define AD1836_DAC_SWITCH(x) \ SOC_DOUBLE("DAC" #x " Playback Switch", AD1836_DAC_CTRL2, \ AD1836_MUTE_LEFT(x), AD1836_MUTE_RIGHT(x), 1, 1) #define AD1836_ADC_SWITCH(x) \ SOC_DOUBLE("ADC" #x " Capture Switch", AD1836_ADC_CTRL2, \ AD1836_MUTE_LEFT(x), AD1836_MUTE_RIGHT(x), 1, 1) static const struct snd_kcontrol_new ad183x_dac_controls[] = { AD1836_DAC_VOLUME(1), AD1836_DAC_SWITCH(1), AD1836_DAC_VOLUME(2), AD1836_DAC_SWITCH(2), AD1836_DAC_VOLUME(3), AD1836_DAC_SWITCH(3), AD1836_DAC_VOLUME(4), AD1836_DAC_SWITCH(4), }; static const struct snd_soc_dapm_widget ad183x_dac_dapm_widgets[] = { SND_SOC_DAPM_OUTPUT("DAC1OUT"), SND_SOC_DAPM_OUTPUT("DAC2OUT"), SND_SOC_DAPM_OUTPUT("DAC3OUT"), SND_SOC_DAPM_OUTPUT("DAC4OUT"), }; static const struct snd_soc_dapm_route ad183x_dac_routes[] = { { "DAC1OUT", NULL, "DAC" }, { "DAC2OUT", NULL, "DAC" }, { "DAC3OUT", NULL, "DAC" }, { "DAC4OUT", NULL, "DAC" }, }; static const struct snd_kcontrol_new ad183x_adc_controls[] = { AD1836_ADC_SWITCH(1), AD1836_ADC_SWITCH(2), AD1836_ADC_SWITCH(3), }; static const struct snd_soc_dapm_widget ad183x_adc_dapm_widgets[] = { SND_SOC_DAPM_INPUT("ADC1IN"), SND_SOC_DAPM_INPUT("ADC2IN"), }; static const struct snd_soc_dapm_route ad183x_adc_routes[] = { { "ADC", NULL, "ADC1IN" }, { "ADC", NULL, "ADC2IN" }, }; static const struct snd_kcontrol_new ad183x_controls[] = { /* ADC high-pass filter */ SOC_SINGLE("ADC High Pass Filter Switch", AD1836_ADC_CTRL1, AD1836_ADC_HIGHPASS_FILTER, 1, 0), /* DAC de-emphasis */ SOC_ENUM("Playback Deemphasis", ad1836_deemp_enum), }; static const struct snd_soc_dapm_widget ad183x_dapm_widgets[] = { SND_SOC_DAPM_DAC("DAC", "Playback", AD1836_DAC_CTRL1, AD1836_DAC_POWERDOWN, 1), SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0), SND_SOC_DAPM_SUPPLY("ADC_PWR", AD1836_ADC_CTRL1, AD1836_ADC_POWERDOWN, 1, NULL, 0), }; static const struct snd_soc_dapm_route ad183x_dapm_routes[] = { { "DAC", NULL, "ADC_PWR" }, { "ADC", NULL, "ADC_PWR" }, }; static const DECLARE_TLV_DB_SCALE(ad1836_in_tlv, 0, 300, 0); static const struct snd_kcontrol_new ad1836_controls[] = { SOC_DOUBLE_TLV("ADC2 Capture Volume", AD1836_ADC_CTRL1, 3, 0, 4, 0, ad1836_in_tlv), }; /* * DAI ops entries */ static int ad1836_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) { switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { /* at present, we support adc aux mode to interface with * blackfin sport tdm mode */ case SND_SOC_DAIFMT_DSP_A: break; default: return -EINVAL; } switch (fmt & SND_SOC_DAIFMT_INV_MASK) { case SND_SOC_DAIFMT_IB_IF: break; default: return -EINVAL; } switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) { /* ALCLK,ABCLK are both output, AD1836 can only be provider */ case SND_SOC_DAIFMT_CBP_CFP: break; default: return -EINVAL; } return 0; } static int ad1836_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { struct ad1836_priv *ad1836 = snd_soc_component_get_drvdata(dai->component); int word_len = 0; /* bit size */ switch (params_width(params)) { case 16: word_len = AD1836_WORD_LEN_16; break; case 20: word_len = AD1836_WORD_LEN_20; break; case 24: case 32: word_len = AD1836_WORD_LEN_24; break; default: return -EINVAL; } regmap_update_bits(ad1836->regmap, AD1836_DAC_CTRL1, AD1836_DAC_WORD_LEN_MASK, word_len << AD1836_DAC_WORD_LEN_OFFSET); regmap_update_bits(ad1836->regmap, AD1836_ADC_CTRL2, AD1836_ADC_WORD_LEN_MASK, word_len << AD1836_ADC_WORD_OFFSET); return 0; } static const struct snd_soc_dai_ops ad1836_dai_ops = { .hw_params = ad1836_hw_params, .set_fmt = ad1836_set_dai_fmt, }; #define AD183X_DAI(_name, num_dacs, num_adcs) \ { \ .name = _name "-hifi", \ .playback = { \ .stream_name = "Playback", \ .channels_min = 2, \ .channels_max = (num_dacs) * 2, \ .rates = SNDRV_PCM_RATE_48000, \ .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE | \ SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE, \ }, \ .capture = { \ .stream_name = "Capture", \ .channels_min = 2, \ .channels_max = (num_adcs) * 2, \ .rates = SNDRV_PCM_RATE_48000, \ .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE | \ SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE, \ }, \ .ops = &ad1836_dai_ops, \ } static struct snd_soc_dai_driver ad183x_dais[] = { [AD1835] = AD183X_DAI("ad1835", 4, 1), [AD1836] = AD183X_DAI("ad1836", 3, 2), [AD1838] = AD183X_DAI("ad1838", 3, 1), }; #ifdef CONFIG_PM static int ad1836_suspend(struct snd_soc_component *component) { struct ad1836_priv *ad1836 = snd_soc_component_get_drvdata(component); /* reset clock control mode */ return regmap_update_bits(ad1836->regmap, AD1836_ADC_CTRL2, AD1836_ADC_SERFMT_MASK, 0); } static int ad1836_resume(struct snd_soc_component *component) { struct ad1836_priv *ad1836 = snd_soc_component_get_drvdata(component); /* restore clock control mode */ return regmap_update_bits(ad1836->regmap, AD1836_ADC_CTRL2, AD1836_ADC_SERFMT_MASK, AD1836_ADC_AUX); } #else #define ad1836_suspend NULL #define ad1836_resume NULL #endif static int ad1836_probe(struct snd_soc_component *component) { struct ad1836_priv *ad1836 = snd_soc_component_get_drvdata(component); struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component); int num_dacs, num_adcs; int ret = 0; int i; num_dacs = ad183x_dais[ad1836->type].playback.channels_max / 2; num_adcs = ad183x_dais[ad1836->type].capture.channels_max / 2; /* default setting for ad1836 */ /* de-emphasis: 48kHz, power-on dac */ regmap_write(ad1836->regmap, AD1836_DAC_CTRL1, 0x300); /* unmute dac channels */ regmap_write(ad1836->regmap, AD1836_DAC_CTRL2, 0x0); /* high-pass filter enable, power-on adc */ regmap_write(ad1836->regmap, AD1836_ADC_CTRL1, 0x100); /* unmute adc channles, adc aux mode */ regmap_write(ad1836->regmap, AD1836_ADC_CTRL2, 0x180); /* volume */ for (i = 1; i <= num_dacs; ++i) { regmap_write(ad1836->regmap, AD1836_DAC_L_VOL(i), 0x3FF); regmap_write(ad1836->regmap, AD1836_DAC_R_VOL(i), 0x3FF); } if (ad1836->type == AD1836) { /* left/right diff:PGA/MUX */ regmap_write(ad1836->regmap, AD1836_ADC_CTRL3, 0x3A); ret = snd_soc_add_component_controls(component, ad1836_controls, ARRAY_SIZE(ad1836_controls)); if (ret) return ret; } else { regmap_write(ad1836->regmap, AD1836_ADC_CTRL3, 0x00); } ret = snd_soc_add_component_controls(component, ad183x_dac_controls, num_dacs * 2); if (ret) return ret; ret = snd_soc_add_component_controls(component, ad183x_adc_controls, num_adcs); if (ret) return ret; ret = snd_soc_dapm_new_controls(dapm, ad183x_dac_dapm_widgets, num_dacs); if (ret) return ret; ret = snd_soc_dapm_new_controls(dapm, ad183x_adc_dapm_widgets, num_adcs); if (ret) return ret; ret = snd_soc_dapm_add_routes(dapm, ad183x_dac_routes, num_dacs); if (ret) return ret; ret = snd_soc_dapm_add_routes(dapm, ad183x_adc_routes, num_adcs); return ret; } /* power down chip */ static void ad1836_remove(struct snd_soc_component *component) { struct ad1836_priv *ad1836 = snd_soc_component_get_drvdata(component); /* reset clock control mode */ regmap_update_bits(ad1836->regmap, AD1836_ADC_CTRL2, AD1836_ADC_SERFMT_MASK, 0); } static const struct snd_soc_component_driver soc_component_dev_ad1836 = { .probe = ad1836_probe, .remove = ad1836_remove, .suspend = ad1836_suspend, .resume = ad1836_resume, .controls = ad183x_controls, .num_controls = ARRAY_SIZE(ad183x_controls), .dapm_widgets = ad183x_dapm_widgets, .num_dapm_widgets = ARRAY_SIZE(ad183x_dapm_widgets), .dapm_routes = ad183x_dapm_routes, .num_dapm_routes = ARRAY_SIZE(ad183x_dapm_routes), .idle_bias_on = 1, .use_pmdown_time = 1, .endianness = 1, }; static const struct reg_default ad1836_reg_defaults[] = { { AD1836_DAC_CTRL1, 0x0000 }, { AD1836_DAC_CTRL2, 0x0000 }, { AD1836_DAC_L_VOL(0), 0x0000 }, { AD1836_DAC_R_VOL(0), 0x0000 }, { AD1836_DAC_L_VOL(1), 0x0000 }, { AD1836_DAC_R_VOL(1), 0x0000 }, { AD1836_DAC_L_VOL(2), 0x0000 }, { AD1836_DAC_R_VOL(2), 0x0000 }, { AD1836_DAC_L_VOL(3), 0x0000 }, { AD1836_DAC_R_VOL(3), 0x0000 }, { AD1836_ADC_CTRL1, 0x0000 }, { AD1836_ADC_CTRL2, 0x0000 }, { AD1836_ADC_CTRL3, 0x0000 }, }; static const struct regmap_config ad1836_regmap_config = { .val_bits = 12, .reg_bits = 4, .read_flag_mask = 0x08, .max_register = AD1836_ADC_CTRL3, .reg_defaults = ad1836_reg_defaults, .num_reg_defaults = ARRAY_SIZE(ad1836_reg_defaults), .cache_type = REGCACHE_RBTREE, }; static int ad1836_spi_probe(struct spi_device *spi) { struct ad1836_priv *ad1836; int ret; ad1836 = devm_kzalloc(&spi->dev, sizeof(struct ad1836_priv), GFP_KERNEL); if (ad1836 == NULL) return -ENOMEM; ad1836->regmap = devm_regmap_init_spi(spi, &ad1836_regmap_config); if (IS_ERR(ad1836->regmap)) return PTR_ERR(ad1836->regmap); ad1836->type = spi_get_device_id(spi)->driver_data; spi_set_drvdata(spi, ad1836); ret = devm_snd_soc_register_component(&spi->dev, &soc_component_dev_ad1836, &ad183x_dais[ad1836->type], 1); return ret; } static const struct spi_device_id ad1836_ids[] = { { "ad1835", AD1835 }, { "ad1836", AD1836 }, { "ad1837", AD1835 }, { "ad1838", AD1838 }, { "ad1839", AD1838 }, { }, }; MODULE_DEVICE_TABLE(spi, ad1836_ids); static struct spi_driver ad1836_spi_driver = { .driver = { .name = "ad1836", }, .probe = ad1836_spi_probe, .id_table = ad1836_ids, }; module_spi_driver(ad1836_spi_driver); MODULE_DESCRIPTION("ASoC ad1836 driver"); MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>"); MODULE_LICENSE("GPL");