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317 lines
7.9 KiB
317 lines
7.9 KiB
// 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 <[email protected]> |
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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 __maybe_unused = { |
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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 __maybe_unused = { |
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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 <[email protected]>"); |
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MODULE_LICENSE("GPL");
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