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
pcm179x_accessible_reg(struct device * dev,unsigned int reg)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
pcm179x_writeable_reg(struct device * dev,unsigned int reg)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
pcm179x_set_dai_fmt(struct snd_soc_dai * codec_dai,unsigned int format)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
pcm179x_mute(struct snd_soc_dai * dai,int mute,int direction)79*1eb2c43dSKuninori Morimoto static int pcm179x_mute(struct snd_soc_dai *dai, int mute, int direction)
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
pcm179x_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params,struct snd_soc_dai * dai)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,
148*1eb2c43dSKuninori Morimoto .mute_stream = pcm179x_mute,
149*1eb2c43dSKuninori Morimoto .no_capture_mute = 1,
1500471cd93SMichael Trimarchi };
1510471cd93SMichael Trimarchi
1520471cd93SMichael Trimarchi static const DECLARE_TLV_DB_SCALE(pcm179x_dac_tlv, -12000, 50, 1);
1530471cd93SMichael Trimarchi
1540471cd93SMichael Trimarchi static const struct snd_kcontrol_new pcm179x_controls[] = {
1550471cd93SMichael Trimarchi SOC_DOUBLE_R_RANGE_TLV("DAC Playback Volume", PCM179X_DAC_VOL_LEFT,
1560471cd93SMichael Trimarchi PCM179X_DAC_VOL_RIGHT, 0, 0xf, 0xff, 0,
1570471cd93SMichael Trimarchi pcm179x_dac_tlv),
1580471cd93SMichael Trimarchi SOC_SINGLE("DAC Invert Output Switch", PCM179X_MODE_CONTROL, 7, 1, 0),
1590471cd93SMichael Trimarchi SOC_SINGLE("DAC Rolloff Filter Switch", PCM179X_MODE_CONTROL, 1, 1, 0),
1600471cd93SMichael Trimarchi };
1610471cd93SMichael Trimarchi
1620471cd93SMichael Trimarchi static const struct snd_soc_dapm_widget pcm179x_dapm_widgets[] = {
1630471cd93SMichael Trimarchi SND_SOC_DAPM_OUTPUT("IOUTL+"),
1640471cd93SMichael Trimarchi SND_SOC_DAPM_OUTPUT("IOUTL-"),
1650471cd93SMichael Trimarchi SND_SOC_DAPM_OUTPUT("IOUTR+"),
1660471cd93SMichael Trimarchi SND_SOC_DAPM_OUTPUT("IOUTR-"),
1670471cd93SMichael Trimarchi };
1680471cd93SMichael Trimarchi
1690471cd93SMichael Trimarchi static const struct snd_soc_dapm_route pcm179x_dapm_routes[] = {
1700471cd93SMichael Trimarchi { "IOUTL+", NULL, "Playback" },
1710471cd93SMichael Trimarchi { "IOUTL-", NULL, "Playback" },
1720471cd93SMichael Trimarchi { "IOUTR+", NULL, "Playback" },
1730471cd93SMichael Trimarchi { "IOUTR-", NULL, "Playback" },
1740471cd93SMichael Trimarchi };
1750471cd93SMichael Trimarchi
1760471cd93SMichael Trimarchi static struct snd_soc_dai_driver pcm179x_dai = {
1770471cd93SMichael Trimarchi .name = "pcm179x-hifi",
1780471cd93SMichael Trimarchi .playback = {
1790471cd93SMichael Trimarchi .stream_name = "Playback",
1800471cd93SMichael Trimarchi .channels_min = 2,
1810471cd93SMichael Trimarchi .channels_max = 2,
182e0236f54SJacob Siverskog .rates = SNDRV_PCM_RATE_CONTINUOUS,
183e0236f54SJacob Siverskog .rate_min = 10000,
184e0236f54SJacob Siverskog .rate_max = 200000,
1850471cd93SMichael Trimarchi .formats = PCM1792A_FORMATS, },
1860471cd93SMichael Trimarchi .ops = &pcm179x_dai_ops,
1870471cd93SMichael Trimarchi };
1880471cd93SMichael Trimarchi
1891b347b68SJacob Siverskog const struct regmap_config pcm179x_regmap_config = {
1900471cd93SMichael Trimarchi .reg_bits = 8,
1910471cd93SMichael Trimarchi .val_bits = 8,
1920471cd93SMichael Trimarchi .max_register = 23,
1930471cd93SMichael Trimarchi .reg_defaults = pcm179x_reg_defaults,
1940471cd93SMichael Trimarchi .num_reg_defaults = ARRAY_SIZE(pcm179x_reg_defaults),
1950471cd93SMichael Trimarchi .writeable_reg = pcm179x_writeable_reg,
1960471cd93SMichael Trimarchi .readable_reg = pcm179x_accessible_reg,
1970471cd93SMichael Trimarchi };
1981b347b68SJacob Siverskog EXPORT_SYMBOL_GPL(pcm179x_regmap_config);
1990471cd93SMichael Trimarchi
200db0a11d0SKuninori Morimoto static const struct snd_soc_component_driver soc_component_dev_pcm179x = {
2010471cd93SMichael Trimarchi .controls = pcm179x_controls,
2020471cd93SMichael Trimarchi .num_controls = ARRAY_SIZE(pcm179x_controls),
2030471cd93SMichael Trimarchi .dapm_widgets = pcm179x_dapm_widgets,
2040471cd93SMichael Trimarchi .num_dapm_widgets = ARRAY_SIZE(pcm179x_dapm_widgets),
2050471cd93SMichael Trimarchi .dapm_routes = pcm179x_dapm_routes,
2060471cd93SMichael Trimarchi .num_dapm_routes = ARRAY_SIZE(pcm179x_dapm_routes),
207db0a11d0SKuninori Morimoto .idle_bias_on = 1,
208db0a11d0SKuninori Morimoto .use_pmdown_time = 1,
209db0a11d0SKuninori Morimoto .endianness = 1,
2100471cd93SMichael Trimarchi };
2110471cd93SMichael Trimarchi
pcm179x_common_init(struct device * dev,struct regmap * regmap)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