1c942fddfSThomas Gleixner // SPDX-License-Identifier: GPL-2.0-or-later 20471cd93SMichael Trimarchi /* 30471cd93SMichael Trimarchi * PCM179X ASoC codec driver 40471cd93SMichael Trimarchi * 50471cd93SMichael Trimarchi * Copyright (c) Amarula Solutions B.V. 2013 60471cd93SMichael Trimarchi * 70471cd93SMichael Trimarchi * Michael Trimarchi <michael@amarulasolutions.com> 80471cd93SMichael Trimarchi */ 90471cd93SMichael Trimarchi 100471cd93SMichael Trimarchi #include <linux/module.h> 110471cd93SMichael Trimarchi #include <linux/slab.h> 120471cd93SMichael Trimarchi #include <linux/kernel.h> 130471cd93SMichael Trimarchi #include <linux/device.h> 140471cd93SMichael Trimarchi 150471cd93SMichael Trimarchi #include <sound/core.h> 160471cd93SMichael Trimarchi #include <sound/pcm.h> 170471cd93SMichael Trimarchi #include <sound/pcm_params.h> 180471cd93SMichael Trimarchi #include <sound/initval.h> 190471cd93SMichael Trimarchi #include <sound/soc.h> 200471cd93SMichael Trimarchi #include <sound/tlv.h> 210471cd93SMichael Trimarchi #include <linux/of.h> 220471cd93SMichael Trimarchi 230471cd93SMichael Trimarchi #include "pcm179x.h" 240471cd93SMichael Trimarchi 250471cd93SMichael Trimarchi #define PCM179X_DAC_VOL_LEFT 0x10 260471cd93SMichael Trimarchi #define PCM179X_DAC_VOL_RIGHT 0x11 270471cd93SMichael Trimarchi #define PCM179X_FMT_CONTROL 0x12 280471cd93SMichael Trimarchi #define PCM179X_MODE_CONTROL 0x13 290471cd93SMichael Trimarchi #define PCM179X_SOFT_MUTE PCM179X_FMT_CONTROL 300471cd93SMichael Trimarchi 310471cd93SMichael Trimarchi #define PCM179X_FMT_MASK 0x70 320471cd93SMichael Trimarchi #define PCM179X_FMT_SHIFT 4 330471cd93SMichael Trimarchi #define PCM179X_MUTE_MASK 0x01 340471cd93SMichael Trimarchi #define PCM179X_MUTE_SHIFT 0 350471cd93SMichael Trimarchi #define PCM179X_ATLD_ENABLE (1 << 7) 360471cd93SMichael Trimarchi 370471cd93SMichael Trimarchi static const struct reg_default pcm179x_reg_defaults[] = { 380471cd93SMichael Trimarchi { 0x10, 0xff }, 390471cd93SMichael Trimarchi { 0x11, 0xff }, 400471cd93SMichael Trimarchi { 0x12, 0x50 }, 410471cd93SMichael Trimarchi { 0x13, 0x00 }, 420471cd93SMichael Trimarchi { 0x14, 0x00 }, 430471cd93SMichael Trimarchi { 0x15, 0x01 }, 440471cd93SMichael Trimarchi { 0x16, 0x00 }, 450471cd93SMichael Trimarchi { 0x17, 0x00 }, 460471cd93SMichael Trimarchi }; 470471cd93SMichael Trimarchi 480471cd93SMichael Trimarchi static bool pcm179x_accessible_reg(struct device *dev, unsigned int reg) 490471cd93SMichael Trimarchi { 500471cd93SMichael Trimarchi return reg >= 0x10 && reg <= 0x17; 510471cd93SMichael Trimarchi } 520471cd93SMichael Trimarchi 53a074ae0eSArnd Bergmann static bool pcm179x_writeable_reg(struct device *dev, unsigned int reg) 540471cd93SMichael Trimarchi { 550471cd93SMichael Trimarchi bool accessible; 560471cd93SMichael Trimarchi 570471cd93SMichael Trimarchi accessible = pcm179x_accessible_reg(dev, reg); 580471cd93SMichael Trimarchi 590471cd93SMichael Trimarchi return accessible && reg != 0x16 && reg != 0x17; 600471cd93SMichael Trimarchi } 610471cd93SMichael Trimarchi 620471cd93SMichael Trimarchi struct pcm179x_private { 630471cd93SMichael Trimarchi struct regmap *regmap; 640471cd93SMichael Trimarchi unsigned int format; 650471cd93SMichael Trimarchi unsigned int rate; 660471cd93SMichael Trimarchi }; 670471cd93SMichael Trimarchi 680471cd93SMichael Trimarchi static int pcm179x_set_dai_fmt(struct snd_soc_dai *codec_dai, 690471cd93SMichael Trimarchi unsigned int format) 700471cd93SMichael Trimarchi { 71db0a11d0SKuninori Morimoto struct snd_soc_component *component = codec_dai->component; 72db0a11d0SKuninori Morimoto struct pcm179x_private *priv = snd_soc_component_get_drvdata(component); 730471cd93SMichael Trimarchi 740471cd93SMichael Trimarchi priv->format = format; 750471cd93SMichael Trimarchi 760471cd93SMichael Trimarchi return 0; 770471cd93SMichael Trimarchi } 780471cd93SMichael Trimarchi 790471cd93SMichael Trimarchi static int pcm179x_digital_mute(struct snd_soc_dai *dai, int mute) 800471cd93SMichael Trimarchi { 81db0a11d0SKuninori Morimoto struct snd_soc_component *component = dai->component; 82db0a11d0SKuninori Morimoto struct pcm179x_private *priv = snd_soc_component_get_drvdata(component); 830471cd93SMichael Trimarchi int ret; 840471cd93SMichael Trimarchi 850471cd93SMichael Trimarchi ret = regmap_update_bits(priv->regmap, PCM179X_SOFT_MUTE, 860471cd93SMichael Trimarchi PCM179X_MUTE_MASK, !!mute); 870471cd93SMichael Trimarchi if (ret < 0) 880471cd93SMichael Trimarchi return ret; 890471cd93SMichael Trimarchi 900471cd93SMichael Trimarchi return 0; 910471cd93SMichael Trimarchi } 920471cd93SMichael Trimarchi 930471cd93SMichael Trimarchi static int pcm179x_hw_params(struct snd_pcm_substream *substream, 940471cd93SMichael Trimarchi struct snd_pcm_hw_params *params, 950471cd93SMichael Trimarchi struct snd_soc_dai *dai) 960471cd93SMichael Trimarchi { 97db0a11d0SKuninori Morimoto struct snd_soc_component *component = dai->component; 98db0a11d0SKuninori Morimoto struct pcm179x_private *priv = snd_soc_component_get_drvdata(component); 990471cd93SMichael Trimarchi int val = 0, ret; 1000471cd93SMichael Trimarchi 1010471cd93SMichael Trimarchi priv->rate = params_rate(params); 1020471cd93SMichael Trimarchi 1030471cd93SMichael Trimarchi switch (priv->format & SND_SOC_DAIFMT_FORMAT_MASK) { 1040471cd93SMichael Trimarchi case SND_SOC_DAIFMT_RIGHT_J: 1050471cd93SMichael Trimarchi switch (params_width(params)) { 1060471cd93SMichael Trimarchi case 24: 1070471cd93SMichael Trimarchi case 32: 1080471cd93SMichael Trimarchi val = 2; 1090471cd93SMichael Trimarchi break; 1100471cd93SMichael Trimarchi case 16: 1110471cd93SMichael Trimarchi val = 0; 1120471cd93SMichael Trimarchi break; 1130471cd93SMichael Trimarchi default: 1140471cd93SMichael Trimarchi return -EINVAL; 1150471cd93SMichael Trimarchi } 1160471cd93SMichael Trimarchi break; 1170471cd93SMichael Trimarchi case SND_SOC_DAIFMT_I2S: 1180471cd93SMichael Trimarchi switch (params_width(params)) { 1190471cd93SMichael Trimarchi case 24: 1200471cd93SMichael Trimarchi case 32: 1210471cd93SMichael Trimarchi val = 5; 1220471cd93SMichael Trimarchi break; 1230471cd93SMichael Trimarchi case 16: 1240471cd93SMichael Trimarchi val = 4; 1250471cd93SMichael Trimarchi break; 1260471cd93SMichael Trimarchi default: 1270471cd93SMichael Trimarchi return -EINVAL; 1280471cd93SMichael Trimarchi } 1290471cd93SMichael Trimarchi break; 1300471cd93SMichael Trimarchi default: 131db0a11d0SKuninori Morimoto dev_err(component->dev, "Invalid DAI format\n"); 1320471cd93SMichael Trimarchi return -EINVAL; 1330471cd93SMichael Trimarchi } 1340471cd93SMichael Trimarchi 1350471cd93SMichael Trimarchi val = val << PCM179X_FMT_SHIFT | PCM179X_ATLD_ENABLE; 1360471cd93SMichael Trimarchi 1370471cd93SMichael Trimarchi ret = regmap_update_bits(priv->regmap, PCM179X_FMT_CONTROL, 1380471cd93SMichael Trimarchi PCM179X_FMT_MASK | PCM179X_ATLD_ENABLE, val); 1390471cd93SMichael Trimarchi if (ret < 0) 1400471cd93SMichael Trimarchi return ret; 1410471cd93SMichael Trimarchi 1420471cd93SMichael Trimarchi return 0; 1430471cd93SMichael Trimarchi } 1440471cd93SMichael Trimarchi 1450471cd93SMichael Trimarchi static const struct snd_soc_dai_ops pcm179x_dai_ops = { 1460471cd93SMichael Trimarchi .set_fmt = pcm179x_set_dai_fmt, 1470471cd93SMichael Trimarchi .hw_params = pcm179x_hw_params, 1480471cd93SMichael Trimarchi .digital_mute = pcm179x_digital_mute, 1490471cd93SMichael Trimarchi }; 1500471cd93SMichael Trimarchi 1510471cd93SMichael Trimarchi static const DECLARE_TLV_DB_SCALE(pcm179x_dac_tlv, -12000, 50, 1); 1520471cd93SMichael Trimarchi 1530471cd93SMichael Trimarchi static const struct snd_kcontrol_new pcm179x_controls[] = { 1540471cd93SMichael Trimarchi SOC_DOUBLE_R_RANGE_TLV("DAC Playback Volume", PCM179X_DAC_VOL_LEFT, 1550471cd93SMichael Trimarchi PCM179X_DAC_VOL_RIGHT, 0, 0xf, 0xff, 0, 1560471cd93SMichael Trimarchi pcm179x_dac_tlv), 1570471cd93SMichael Trimarchi SOC_SINGLE("DAC Invert Output Switch", PCM179X_MODE_CONTROL, 7, 1, 0), 1580471cd93SMichael Trimarchi SOC_SINGLE("DAC Rolloff Filter Switch", PCM179X_MODE_CONTROL, 1, 1, 0), 1590471cd93SMichael Trimarchi }; 1600471cd93SMichael Trimarchi 1610471cd93SMichael Trimarchi static const struct snd_soc_dapm_widget pcm179x_dapm_widgets[] = { 1620471cd93SMichael Trimarchi SND_SOC_DAPM_OUTPUT("IOUTL+"), 1630471cd93SMichael Trimarchi SND_SOC_DAPM_OUTPUT("IOUTL-"), 1640471cd93SMichael Trimarchi SND_SOC_DAPM_OUTPUT("IOUTR+"), 1650471cd93SMichael Trimarchi SND_SOC_DAPM_OUTPUT("IOUTR-"), 1660471cd93SMichael Trimarchi }; 1670471cd93SMichael Trimarchi 1680471cd93SMichael Trimarchi static const struct snd_soc_dapm_route pcm179x_dapm_routes[] = { 1690471cd93SMichael Trimarchi { "IOUTL+", NULL, "Playback" }, 1700471cd93SMichael Trimarchi { "IOUTL-", NULL, "Playback" }, 1710471cd93SMichael Trimarchi { "IOUTR+", NULL, "Playback" }, 1720471cd93SMichael Trimarchi { "IOUTR-", NULL, "Playback" }, 1730471cd93SMichael Trimarchi }; 1740471cd93SMichael Trimarchi 1750471cd93SMichael Trimarchi static struct snd_soc_dai_driver pcm179x_dai = { 1760471cd93SMichael Trimarchi .name = "pcm179x-hifi", 1770471cd93SMichael Trimarchi .playback = { 1780471cd93SMichael Trimarchi .stream_name = "Playback", 1790471cd93SMichael Trimarchi .channels_min = 2, 1800471cd93SMichael Trimarchi .channels_max = 2, 181e0236f54SJacob Siverskog .rates = SNDRV_PCM_RATE_CONTINUOUS, 182e0236f54SJacob Siverskog .rate_min = 10000, 183e0236f54SJacob Siverskog .rate_max = 200000, 1840471cd93SMichael Trimarchi .formats = PCM1792A_FORMATS, }, 1850471cd93SMichael Trimarchi .ops = &pcm179x_dai_ops, 1860471cd93SMichael Trimarchi }; 1870471cd93SMichael Trimarchi 1881b347b68SJacob Siverskog const struct regmap_config pcm179x_regmap_config = { 1890471cd93SMichael Trimarchi .reg_bits = 8, 1900471cd93SMichael Trimarchi .val_bits = 8, 1910471cd93SMichael Trimarchi .max_register = 23, 1920471cd93SMichael Trimarchi .reg_defaults = pcm179x_reg_defaults, 1930471cd93SMichael Trimarchi .num_reg_defaults = ARRAY_SIZE(pcm179x_reg_defaults), 1940471cd93SMichael Trimarchi .writeable_reg = pcm179x_writeable_reg, 1950471cd93SMichael Trimarchi .readable_reg = pcm179x_accessible_reg, 1960471cd93SMichael Trimarchi }; 1971b347b68SJacob Siverskog EXPORT_SYMBOL_GPL(pcm179x_regmap_config); 1980471cd93SMichael Trimarchi 199db0a11d0SKuninori Morimoto static const struct snd_soc_component_driver soc_component_dev_pcm179x = { 2000471cd93SMichael Trimarchi .controls = pcm179x_controls, 2010471cd93SMichael Trimarchi .num_controls = ARRAY_SIZE(pcm179x_controls), 2020471cd93SMichael Trimarchi .dapm_widgets = pcm179x_dapm_widgets, 2030471cd93SMichael Trimarchi .num_dapm_widgets = ARRAY_SIZE(pcm179x_dapm_widgets), 2040471cd93SMichael Trimarchi .dapm_routes = pcm179x_dapm_routes, 2050471cd93SMichael Trimarchi .num_dapm_routes = ARRAY_SIZE(pcm179x_dapm_routes), 206db0a11d0SKuninori Morimoto .idle_bias_on = 1, 207db0a11d0SKuninori Morimoto .use_pmdown_time = 1, 208db0a11d0SKuninori Morimoto .endianness = 1, 209db0a11d0SKuninori Morimoto .non_legacy_dai_naming = 1, 2100471cd93SMichael Trimarchi }; 2110471cd93SMichael Trimarchi 2121b347b68SJacob Siverskog int pcm179x_common_init(struct device *dev, struct regmap *regmap) 2130471cd93SMichael Trimarchi { 2140471cd93SMichael Trimarchi struct pcm179x_private *pcm179x; 2150471cd93SMichael Trimarchi 2161b347b68SJacob Siverskog pcm179x = devm_kzalloc(dev, sizeof(struct pcm179x_private), 2170471cd93SMichael Trimarchi GFP_KERNEL); 2180471cd93SMichael Trimarchi if (!pcm179x) 2190471cd93SMichael Trimarchi return -ENOMEM; 2200471cd93SMichael Trimarchi 2211b347b68SJacob Siverskog pcm179x->regmap = regmap; 2221b347b68SJacob Siverskog dev_set_drvdata(dev, pcm179x); 2230471cd93SMichael Trimarchi 224db0a11d0SKuninori Morimoto return devm_snd_soc_register_component(dev, 225db0a11d0SKuninori Morimoto &soc_component_dev_pcm179x, &pcm179x_dai, 1); 2260471cd93SMichael Trimarchi } 2271b347b68SJacob Siverskog EXPORT_SYMBOL_GPL(pcm179x_common_init); 2280471cd93SMichael Trimarchi 2290471cd93SMichael Trimarchi MODULE_DESCRIPTION("ASoC PCM179X driver"); 2300471cd93SMichael Trimarchi MODULE_AUTHOR("Michael Trimarchi <michael@amarulasolutions.com>"); 2310471cd93SMichael Trimarchi MODULE_LICENSE("GPL"); 232