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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Copyright (c) 2017 BayLibre, SAS.4 * Author: Jerome Brunet <jbrunet@baylibre.com>5 */6 7#include <linux/of_platform.h>8#include <linux/module.h>9#include <sound/soc.h>10 11/*12 * The everest 7134 is a very simple DA converter with no register13 */14 15struct es7134_clock_mode {16 unsigned int rate_min;17 unsigned int rate_max;18 unsigned int *mclk_fs;19 unsigned int mclk_fs_num;20};21 22struct es7134_chip {23 struct snd_soc_dai_driver *dai_drv;24 const struct es7134_clock_mode *modes;25 unsigned int mode_num;26 const struct snd_soc_dapm_widget *extra_widgets;27 unsigned int extra_widget_num;28 const struct snd_soc_dapm_route *extra_routes;29 unsigned int extra_route_num;30};31 32struct es7134_data {33 unsigned int mclk;34 const struct es7134_chip *chip;35};36 37static int es7134_check_mclk(struct snd_soc_dai *dai,38 struct es7134_data *priv,39 unsigned int rate)40{41 unsigned int mfs = priv->mclk / rate;42 int i, j;43 44 for (i = 0; i < priv->chip->mode_num; i++) {45 const struct es7134_clock_mode *mode = &priv->chip->modes[i];46 47 if (rate < mode->rate_min || rate > mode->rate_max)48 continue;49 50 for (j = 0; j < mode->mclk_fs_num; j++) {51 if (mode->mclk_fs[j] == mfs)52 return 0;53 }54 55 dev_err(dai->dev, "unsupported mclk_fs %u for rate %u\n",56 mfs, rate);57 return -EINVAL;58 }59 60 /* should not happen */61 dev_err(dai->dev, "unsupported rate: %u\n", rate);62 return -EINVAL;63}64 65static int es7134_hw_params(struct snd_pcm_substream *substream,66 struct snd_pcm_hw_params *params,67 struct snd_soc_dai *dai)68{69 struct es7134_data *priv = snd_soc_dai_get_drvdata(dai);70 71 /* mclk has not been provided, assume it is OK */72 if (!priv->mclk)73 return 0;74 75 return es7134_check_mclk(dai, priv, params_rate(params));76}77 78static int es7134_set_sysclk(struct snd_soc_dai *dai, int clk_id,79 unsigned int freq, int dir)80{81 struct es7134_data *priv = snd_soc_dai_get_drvdata(dai);82 83 if (dir == SND_SOC_CLOCK_IN && clk_id == 0) {84 priv->mclk = freq;85 return 0;86 }87 88 return -ENOTSUPP;89}90 91static int es7134_set_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)92{93 fmt &= (SND_SOC_DAIFMT_FORMAT_MASK | SND_SOC_DAIFMT_INV_MASK |94 SND_SOC_DAIFMT_MASTER_MASK);95 96 if (fmt != (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |97 SND_SOC_DAIFMT_CBC_CFC)) {98 dev_err(codec_dai->dev, "Invalid DAI format\n");99 return -EINVAL;100 }101 102 return 0;103}104 105static int es7134_component_probe(struct snd_soc_component *c)106{107 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(c);108 struct es7134_data *priv = snd_soc_component_get_drvdata(c);109 const struct es7134_chip *chip = priv->chip;110 int ret;111 112 if (chip->extra_widget_num) {113 ret = snd_soc_dapm_new_controls(dapm, chip->extra_widgets,114 chip->extra_widget_num);115 if (ret) {116 dev_err(c->dev, "failed to add extra widgets\n");117 return ret;118 }119 }120 121 if (chip->extra_route_num) {122 ret = snd_soc_dapm_add_routes(dapm, chip->extra_routes,123 chip->extra_route_num);124 if (ret) {125 dev_err(c->dev, "failed to add extra routes\n");126 return ret;127 }128 }129 130 return 0;131}132 133static const struct snd_soc_dai_ops es7134_dai_ops = {134 .set_fmt = es7134_set_fmt,135 .hw_params = es7134_hw_params,136 .set_sysclk = es7134_set_sysclk,137};138 139static struct snd_soc_dai_driver es7134_dai = {140 .name = "es7134-hifi",141 .playback = {142 .stream_name = "Playback",143 .channels_min = 2,144 .channels_max = 2,145 .rates = (SNDRV_PCM_RATE_8000_48000 |146 SNDRV_PCM_RATE_88200 |147 SNDRV_PCM_RATE_96000 |148 SNDRV_PCM_RATE_176400 |149 SNDRV_PCM_RATE_192000),150 .formats = (SNDRV_PCM_FMTBIT_S16_LE |151 SNDRV_PCM_FMTBIT_S18_3LE |152 SNDRV_PCM_FMTBIT_S20_3LE |153 SNDRV_PCM_FMTBIT_S24_3LE |154 SNDRV_PCM_FMTBIT_S24_LE),155 },156 .ops = &es7134_dai_ops,157};158 159static const struct es7134_clock_mode es7134_modes[] = {160 {161 /* Single speed mode */162 .rate_min = 8000,163 .rate_max = 50000,164 .mclk_fs = (unsigned int[]) { 256, 384, 512, 768, 1024 },165 .mclk_fs_num = 5,166 }, {167 /* Double speed mode */168 .rate_min = 84000,169 .rate_max = 100000,170 .mclk_fs = (unsigned int[]) { 128, 192, 256, 384, 512 },171 .mclk_fs_num = 5,172 }, {173 /* Quad speed mode */174 .rate_min = 167000,175 .rate_max = 192000,176 .mclk_fs = (unsigned int[]) { 128, 192, 256 },177 .mclk_fs_num = 3,178 },179};180 181/* Digital I/O are also supplied by VDD on the es7134 */182static const struct snd_soc_dapm_route es7134_extra_routes[] = {183 { "Playback", NULL, "VDD", }184};185 186static const struct es7134_chip es7134_chip __maybe_unused = {187 .dai_drv = &es7134_dai,188 .modes = es7134_modes,189 .mode_num = ARRAY_SIZE(es7134_modes),190 .extra_routes = es7134_extra_routes,191 .extra_route_num = ARRAY_SIZE(es7134_extra_routes),192};193 194static const struct snd_soc_dapm_widget es7134_dapm_widgets[] = {195 SND_SOC_DAPM_OUTPUT("AOUTL"),196 SND_SOC_DAPM_OUTPUT("AOUTR"),197 SND_SOC_DAPM_DAC("DAC", "Playback", SND_SOC_NOPM, 0, 0),198 SND_SOC_DAPM_REGULATOR_SUPPLY("VDD", 0, 0),199};200 201static const struct snd_soc_dapm_route es7134_dapm_routes[] = {202 { "AOUTL", NULL, "DAC" },203 { "AOUTR", NULL, "DAC" },204 { "DAC", NULL, "VDD" },205};206 207static const struct snd_soc_component_driver es7134_component_driver = {208 .probe = es7134_component_probe,209 .dapm_widgets = es7134_dapm_widgets,210 .num_dapm_widgets = ARRAY_SIZE(es7134_dapm_widgets),211 .dapm_routes = es7134_dapm_routes,212 .num_dapm_routes = ARRAY_SIZE(es7134_dapm_routes),213 .idle_bias_on = 1,214 .use_pmdown_time = 1,215 .endianness = 1,216};217 218static struct snd_soc_dai_driver es7154_dai = {219 .name = "es7154-hifi",220 .playback = {221 .stream_name = "Playback",222 .channels_min = 2,223 .channels_max = 2,224 .rates = (SNDRV_PCM_RATE_8000_48000 |225 SNDRV_PCM_RATE_88200 |226 SNDRV_PCM_RATE_96000),227 .formats = (SNDRV_PCM_FMTBIT_S16_LE |228 SNDRV_PCM_FMTBIT_S18_3LE |229 SNDRV_PCM_FMTBIT_S20_3LE |230 SNDRV_PCM_FMTBIT_S24_3LE |231 SNDRV_PCM_FMTBIT_S24_LE),232 },233 .ops = &es7134_dai_ops,234};235 236static const struct es7134_clock_mode es7154_modes[] = {237 {238 /* Single speed mode */239 .rate_min = 8000,240 .rate_max = 50000,241 .mclk_fs = (unsigned int[]) { 32, 64, 128, 192, 256,242 384, 512, 768, 1024 },243 .mclk_fs_num = 9,244 }, {245 /* Double speed mode */246 .rate_min = 84000,247 .rate_max = 100000,248 .mclk_fs = (unsigned int[]) { 128, 192, 256, 384, 512,249 768, 1024},250 .mclk_fs_num = 7,251 }252};253 254/* Es7154 has a separate supply for digital I/O */255static const struct snd_soc_dapm_widget es7154_extra_widgets[] = {256 SND_SOC_DAPM_REGULATOR_SUPPLY("PVDD", 0, 0),257};258 259static const struct snd_soc_dapm_route es7154_extra_routes[] = {260 { "Playback", NULL, "PVDD", }261};262 263static const struct es7134_chip es7154_chip __maybe_unused = {264 .dai_drv = &es7154_dai,265 .modes = es7154_modes,266 .mode_num = ARRAY_SIZE(es7154_modes),267 .extra_routes = es7154_extra_routes,268 .extra_route_num = ARRAY_SIZE(es7154_extra_routes),269 .extra_widgets = es7154_extra_widgets,270 .extra_widget_num = ARRAY_SIZE(es7154_extra_widgets),271};272 273static int es7134_probe(struct platform_device *pdev)274{275 struct device *dev = &pdev->dev;276 struct es7134_data *priv;277 278 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);279 if (!priv)280 return -ENOMEM;281 platform_set_drvdata(pdev, priv);282 283 priv->chip = of_device_get_match_data(dev);284 if (!priv->chip) {285 dev_err(dev, "failed to match device\n");286 return -ENODEV;287 }288 289 return devm_snd_soc_register_component(&pdev->dev,290 &es7134_component_driver,291 priv->chip->dai_drv, 1);292}293 294#ifdef CONFIG_OF295static const struct of_device_id es7134_ids[] = {296 { .compatible = "everest,es7134", .data = &es7134_chip },297 { .compatible = "everest,es7144", .data = &es7134_chip },298 { .compatible = "everest,es7154", .data = &es7154_chip },299 { }300};301MODULE_DEVICE_TABLE(of, es7134_ids);302#endif303 304static struct platform_driver es7134_driver = {305 .driver = {306 .name = "es7134",307 .of_match_table = of_match_ptr(es7134_ids),308 },309 .probe = es7134_probe,310};311 312module_platform_driver(es7134_driver);313 314MODULE_DESCRIPTION("ASoC ES7134 audio codec driver");315MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");316MODULE_LICENSE("GPL");317