318 строки
7.8 KiB
C
318 строки
7.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (c) 2017 BayLibre, SAS.
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* Author: Jerome Brunet <jbrunet@baylibre.com>
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*/
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#include <linux/of_platform.h>
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#include <linux/module.h>
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#include <sound/soc.h>
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/*
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* The everest 7134 is a very simple DA converter with no register
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*/
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struct es7134_clock_mode {
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unsigned int rate_min;
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unsigned int rate_max;
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unsigned int *mclk_fs;
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unsigned int mclk_fs_num;
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};
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struct es7134_chip {
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struct snd_soc_dai_driver *dai_drv;
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const struct es7134_clock_mode *modes;
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unsigned int mode_num;
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const struct snd_soc_dapm_widget *extra_widgets;
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unsigned int extra_widget_num;
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const struct snd_soc_dapm_route *extra_routes;
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unsigned int extra_route_num;
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};
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struct es7134_data {
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unsigned int mclk;
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const struct es7134_chip *chip;
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};
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static int es7134_check_mclk(struct snd_soc_dai *dai,
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struct es7134_data *priv,
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unsigned int rate)
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{
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unsigned int mfs = priv->mclk / rate;
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int i, j;
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for (i = 0; i < priv->chip->mode_num; i++) {
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const struct es7134_clock_mode *mode = &priv->chip->modes[i];
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if (rate < mode->rate_min || rate > mode->rate_max)
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continue;
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for (j = 0; j < mode->mclk_fs_num; j++) {
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if (mode->mclk_fs[j] == mfs)
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return 0;
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}
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dev_err(dai->dev, "unsupported mclk_fs %u for rate %u\n",
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mfs, rate);
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return -EINVAL;
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}
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/* should not happen */
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dev_err(dai->dev, "unsupported rate: %u\n", rate);
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return -EINVAL;
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}
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static int es7134_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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struct es7134_data *priv = snd_soc_dai_get_drvdata(dai);
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/* mclk has not been provided, assume it is OK */
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if (!priv->mclk)
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return 0;
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return es7134_check_mclk(dai, priv, params_rate(params));
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}
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static int es7134_set_sysclk(struct snd_soc_dai *dai, int clk_id,
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unsigned int freq, int dir)
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{
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struct es7134_data *priv = snd_soc_dai_get_drvdata(dai);
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if (dir == SND_SOC_CLOCK_IN && clk_id == 0) {
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priv->mclk = freq;
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return 0;
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}
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return -ENOTSUPP;
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}
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static int es7134_set_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
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{
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fmt &= (SND_SOC_DAIFMT_FORMAT_MASK | SND_SOC_DAIFMT_INV_MASK |
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SND_SOC_DAIFMT_MASTER_MASK);
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if (fmt != (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
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SND_SOC_DAIFMT_CBS_CFS)) {
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dev_err(codec_dai->dev, "Invalid DAI format\n");
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return -EINVAL;
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}
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return 0;
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}
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static int es7134_component_probe(struct snd_soc_component *c)
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{
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struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(c);
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struct es7134_data *priv = snd_soc_component_get_drvdata(c);
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const struct es7134_chip *chip = priv->chip;
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int ret;
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if (chip->extra_widget_num) {
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ret = snd_soc_dapm_new_controls(dapm, chip->extra_widgets,
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chip->extra_widget_num);
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if (ret) {
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dev_err(c->dev, "failed to add extra widgets\n");
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return ret;
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}
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}
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if (chip->extra_route_num) {
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ret = snd_soc_dapm_add_routes(dapm, chip->extra_routes,
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chip->extra_route_num);
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if (ret) {
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dev_err(c->dev, "failed to add extra routes\n");
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return ret;
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}
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}
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return 0;
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}
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static const struct snd_soc_dai_ops es7134_dai_ops = {
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.set_fmt = es7134_set_fmt,
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.hw_params = es7134_hw_params,
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.set_sysclk = es7134_set_sysclk,
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};
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static struct snd_soc_dai_driver es7134_dai = {
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.name = "es7134-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 = 2,
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.rates = (SNDRV_PCM_RATE_8000_48000 |
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SNDRV_PCM_RATE_88200 |
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SNDRV_PCM_RATE_96000 |
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SNDRV_PCM_RATE_176400 |
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SNDRV_PCM_RATE_192000),
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.formats = (SNDRV_PCM_FMTBIT_S16_LE |
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SNDRV_PCM_FMTBIT_S18_3LE |
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SNDRV_PCM_FMTBIT_S20_3LE |
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SNDRV_PCM_FMTBIT_S24_3LE |
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SNDRV_PCM_FMTBIT_S24_LE),
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},
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.ops = &es7134_dai_ops,
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};
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static const struct es7134_clock_mode es7134_modes[] = {
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{
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/* Single speed mode */
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.rate_min = 8000,
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.rate_max = 50000,
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.mclk_fs = (unsigned int[]) { 256, 384, 512, 768, 1024 },
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.mclk_fs_num = 5,
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}, {
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/* Double speed mode */
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.rate_min = 84000,
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.rate_max = 100000,
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.mclk_fs = (unsigned int[]) { 128, 192, 256, 384, 512 },
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.mclk_fs_num = 5,
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}, {
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/* Quad speed mode */
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.rate_min = 167000,
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.rate_max = 192000,
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.mclk_fs = (unsigned int[]) { 128, 192, 256 },
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.mclk_fs_num = 3,
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},
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};
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/* Digital I/O are also supplied by VDD on the es7134 */
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static const struct snd_soc_dapm_route es7134_extra_routes[] = {
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{ "Playback", NULL, "VDD", }
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};
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static const struct es7134_chip es7134_chip = {
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.dai_drv = &es7134_dai,
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.modes = es7134_modes,
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.mode_num = ARRAY_SIZE(es7134_modes),
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.extra_routes = es7134_extra_routes,
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.extra_route_num = ARRAY_SIZE(es7134_extra_routes),
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};
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static const struct snd_soc_dapm_widget es7134_dapm_widgets[] = {
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SND_SOC_DAPM_OUTPUT("AOUTL"),
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SND_SOC_DAPM_OUTPUT("AOUTR"),
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SND_SOC_DAPM_DAC("DAC", "Playback", SND_SOC_NOPM, 0, 0),
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SND_SOC_DAPM_REGULATOR_SUPPLY("VDD", 0, 0),
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};
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static const struct snd_soc_dapm_route es7134_dapm_routes[] = {
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{ "AOUTL", NULL, "DAC" },
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{ "AOUTR", NULL, "DAC" },
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{ "DAC", NULL, "VDD" },
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};
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static const struct snd_soc_component_driver es7134_component_driver = {
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.probe = es7134_component_probe,
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.dapm_widgets = es7134_dapm_widgets,
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.num_dapm_widgets = ARRAY_SIZE(es7134_dapm_widgets),
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.dapm_routes = es7134_dapm_routes,
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.num_dapm_routes = ARRAY_SIZE(es7134_dapm_routes),
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.idle_bias_on = 1,
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.use_pmdown_time = 1,
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.endianness = 1,
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.non_legacy_dai_naming = 1,
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};
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static struct snd_soc_dai_driver es7154_dai = {
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.name = "es7154-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 = 2,
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.rates = (SNDRV_PCM_RATE_8000_48000 |
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SNDRV_PCM_RATE_88200 |
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SNDRV_PCM_RATE_96000),
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.formats = (SNDRV_PCM_FMTBIT_S16_LE |
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SNDRV_PCM_FMTBIT_S18_3LE |
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SNDRV_PCM_FMTBIT_S20_3LE |
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SNDRV_PCM_FMTBIT_S24_3LE |
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SNDRV_PCM_FMTBIT_S24_LE),
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},
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.ops = &es7134_dai_ops,
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};
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static const struct es7134_clock_mode es7154_modes[] = {
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{
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/* Single speed mode */
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.rate_min = 8000,
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.rate_max = 50000,
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.mclk_fs = (unsigned int[]) { 32, 64, 128, 192, 256,
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384, 512, 768, 1024 },
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.mclk_fs_num = 9,
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}, {
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/* Double speed mode */
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.rate_min = 84000,
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.rate_max = 100000,
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.mclk_fs = (unsigned int[]) { 128, 192, 256, 384, 512,
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768, 1024},
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.mclk_fs_num = 7,
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}
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};
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/* Es7154 has a separate supply for digital I/O */
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static const struct snd_soc_dapm_widget es7154_extra_widgets[] = {
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SND_SOC_DAPM_REGULATOR_SUPPLY("PVDD", 0, 0),
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};
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static const struct snd_soc_dapm_route es7154_extra_routes[] = {
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{ "Playback", NULL, "PVDD", }
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};
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static const struct es7134_chip es7154_chip = {
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.dai_drv = &es7154_dai,
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.modes = es7154_modes,
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.mode_num = ARRAY_SIZE(es7154_modes),
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.extra_routes = es7154_extra_routes,
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.extra_route_num = ARRAY_SIZE(es7154_extra_routes),
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.extra_widgets = es7154_extra_widgets,
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.extra_widget_num = ARRAY_SIZE(es7154_extra_widgets),
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};
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static int es7134_probe(struct platform_device *pdev)
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{
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struct device *dev = &pdev->dev;
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struct es7134_data *priv;
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priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
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if (!priv)
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return -ENOMEM;
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platform_set_drvdata(pdev, priv);
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priv->chip = of_device_get_match_data(dev);
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if (!priv->chip) {
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dev_err(dev, "failed to match device\n");
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return -ENODEV;
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}
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return devm_snd_soc_register_component(&pdev->dev,
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&es7134_component_driver,
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priv->chip->dai_drv, 1);
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}
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#ifdef CONFIG_OF
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static const struct of_device_id es7134_ids[] = {
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{ .compatible = "everest,es7134", .data = &es7134_chip },
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{ .compatible = "everest,es7144", .data = &es7134_chip },
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{ .compatible = "everest,es7154", .data = &es7154_chip },
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{ }
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};
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MODULE_DEVICE_TABLE(of, es7134_ids);
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#endif
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static struct platform_driver es7134_driver = {
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.driver = {
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.name = "es7134",
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.of_match_table = of_match_ptr(es7134_ids),
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},
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.probe = es7134_probe,
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};
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module_platform_driver(es7134_driver);
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MODULE_DESCRIPTION("ASoC ES7134 audio codec driver");
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MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
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MODULE_LICENSE("GPL");
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