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Diffstat (limited to 'sound/soc/codecs/es7134.c')
-rw-r--r--sound/soc/codecs/es7134.c316
1 files changed, 316 insertions, 0 deletions
diff --git a/sound/soc/codecs/es7134.c b/sound/soc/codecs/es7134.c
new file mode 100644
index 000000000..f5150d2f9
--- /dev/null
+++ b/sound/soc/codecs/es7134.c
@@ -0,0 +1,316 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2017 BayLibre, SAS.
+ * Author: Jerome Brunet <jbrunet@baylibre.com>
+ */
+
+#include <linux/of_platform.h>
+#include <linux/module.h>
+#include <sound/soc.h>
+
+/*
+ * The everest 7134 is a very simple DA converter with no register
+ */
+
+struct es7134_clock_mode {
+ unsigned int rate_min;
+ unsigned int rate_max;
+ unsigned int *mclk_fs;
+ unsigned int mclk_fs_num;
+};
+
+struct es7134_chip {
+ struct snd_soc_dai_driver *dai_drv;
+ const struct es7134_clock_mode *modes;
+ unsigned int mode_num;
+ const struct snd_soc_dapm_widget *extra_widgets;
+ unsigned int extra_widget_num;
+ const struct snd_soc_dapm_route *extra_routes;
+ unsigned int extra_route_num;
+};
+
+struct es7134_data {
+ unsigned int mclk;
+ const struct es7134_chip *chip;
+};
+
+static int es7134_check_mclk(struct snd_soc_dai *dai,
+ struct es7134_data *priv,
+ unsigned int rate)
+{
+ unsigned int mfs = priv->mclk / rate;
+ int i, j;
+
+ for (i = 0; i < priv->chip->mode_num; i++) {
+ const struct es7134_clock_mode *mode = &priv->chip->modes[i];
+
+ if (rate < mode->rate_min || rate > mode->rate_max)
+ continue;
+
+ for (j = 0; j < mode->mclk_fs_num; j++) {
+ if (mode->mclk_fs[j] == mfs)
+ return 0;
+ }
+
+ dev_err(dai->dev, "unsupported mclk_fs %u for rate %u\n",
+ mfs, rate);
+ return -EINVAL;
+ }
+
+ /* should not happen */
+ dev_err(dai->dev, "unsupported rate: %u\n", rate);
+ return -EINVAL;
+}
+
+static int es7134_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct es7134_data *priv = snd_soc_dai_get_drvdata(dai);
+
+ /* mclk has not been provided, assume it is OK */
+ if (!priv->mclk)
+ return 0;
+
+ return es7134_check_mclk(dai, priv, params_rate(params));
+}
+
+static int es7134_set_sysclk(struct snd_soc_dai *dai, int clk_id,
+ unsigned int freq, int dir)
+{
+ struct es7134_data *priv = snd_soc_dai_get_drvdata(dai);
+
+ if (dir == SND_SOC_CLOCK_IN && clk_id == 0) {
+ priv->mclk = freq;
+ return 0;
+ }
+
+ return -ENOTSUPP;
+}
+
+static int es7134_set_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
+{
+ fmt &= (SND_SOC_DAIFMT_FORMAT_MASK | SND_SOC_DAIFMT_INV_MASK |
+ SND_SOC_DAIFMT_MASTER_MASK);
+
+ if (fmt != (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBC_CFC)) {
+ dev_err(codec_dai->dev, "Invalid DAI format\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int es7134_component_probe(struct snd_soc_component *c)
+{
+ struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(c);
+ struct es7134_data *priv = snd_soc_component_get_drvdata(c);
+ const struct es7134_chip *chip = priv->chip;
+ int ret;
+
+ if (chip->extra_widget_num) {
+ ret = snd_soc_dapm_new_controls(dapm, chip->extra_widgets,
+ chip->extra_widget_num);
+ if (ret) {
+ dev_err(c->dev, "failed to add extra widgets\n");
+ return ret;
+ }
+ }
+
+ if (chip->extra_route_num) {
+ ret = snd_soc_dapm_add_routes(dapm, chip->extra_routes,
+ chip->extra_route_num);
+ if (ret) {
+ dev_err(c->dev, "failed to add extra routes\n");
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static const struct snd_soc_dai_ops es7134_dai_ops = {
+ .set_fmt = es7134_set_fmt,
+ .hw_params = es7134_hw_params,
+ .set_sysclk = es7134_set_sysclk,
+};
+
+static struct snd_soc_dai_driver es7134_dai = {
+ .name = "es7134-hifi",
+ .playback = {
+ .stream_name = "Playback",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = (SNDRV_PCM_RATE_8000_48000 |
+ SNDRV_PCM_RATE_88200 |
+ SNDRV_PCM_RATE_96000 |
+ SNDRV_PCM_RATE_176400 |
+ SNDRV_PCM_RATE_192000),
+ .formats = (SNDRV_PCM_FMTBIT_S16_LE |
+ SNDRV_PCM_FMTBIT_S18_3LE |
+ SNDRV_PCM_FMTBIT_S20_3LE |
+ SNDRV_PCM_FMTBIT_S24_3LE |
+ SNDRV_PCM_FMTBIT_S24_LE),
+ },
+ .ops = &es7134_dai_ops,
+};
+
+static const struct es7134_clock_mode es7134_modes[] = {
+ {
+ /* Single speed mode */
+ .rate_min = 8000,
+ .rate_max = 50000,
+ .mclk_fs = (unsigned int[]) { 256, 384, 512, 768, 1024 },
+ .mclk_fs_num = 5,
+ }, {
+ /* Double speed mode */
+ .rate_min = 84000,
+ .rate_max = 100000,
+ .mclk_fs = (unsigned int[]) { 128, 192, 256, 384, 512 },
+ .mclk_fs_num = 5,
+ }, {
+ /* Quad speed mode */
+ .rate_min = 167000,
+ .rate_max = 192000,
+ .mclk_fs = (unsigned int[]) { 128, 192, 256 },
+ .mclk_fs_num = 3,
+ },
+};
+
+/* Digital I/O are also supplied by VDD on the es7134 */
+static const struct snd_soc_dapm_route es7134_extra_routes[] = {
+ { "Playback", NULL, "VDD", }
+};
+
+static const struct es7134_chip es7134_chip __maybe_unused = {
+ .dai_drv = &es7134_dai,
+ .modes = es7134_modes,
+ .mode_num = ARRAY_SIZE(es7134_modes),
+ .extra_routes = es7134_extra_routes,
+ .extra_route_num = ARRAY_SIZE(es7134_extra_routes),
+};
+
+static const struct snd_soc_dapm_widget es7134_dapm_widgets[] = {
+ SND_SOC_DAPM_OUTPUT("AOUTL"),
+ SND_SOC_DAPM_OUTPUT("AOUTR"),
+ SND_SOC_DAPM_DAC("DAC", "Playback", SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_REGULATOR_SUPPLY("VDD", 0, 0),
+};
+
+static const struct snd_soc_dapm_route es7134_dapm_routes[] = {
+ { "AOUTL", NULL, "DAC" },
+ { "AOUTR", NULL, "DAC" },
+ { "DAC", NULL, "VDD" },
+};
+
+static const struct snd_soc_component_driver es7134_component_driver = {
+ .probe = es7134_component_probe,
+ .dapm_widgets = es7134_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(es7134_dapm_widgets),
+ .dapm_routes = es7134_dapm_routes,
+ .num_dapm_routes = ARRAY_SIZE(es7134_dapm_routes),
+ .idle_bias_on = 1,
+ .use_pmdown_time = 1,
+ .endianness = 1,
+};
+
+static struct snd_soc_dai_driver es7154_dai = {
+ .name = "es7154-hifi",
+ .playback = {
+ .stream_name = "Playback",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = (SNDRV_PCM_RATE_8000_48000 |
+ SNDRV_PCM_RATE_88200 |
+ SNDRV_PCM_RATE_96000),
+ .formats = (SNDRV_PCM_FMTBIT_S16_LE |
+ SNDRV_PCM_FMTBIT_S18_3LE |
+ SNDRV_PCM_FMTBIT_S20_3LE |
+ SNDRV_PCM_FMTBIT_S24_3LE |
+ SNDRV_PCM_FMTBIT_S24_LE),
+ },
+ .ops = &es7134_dai_ops,
+};
+
+static const struct es7134_clock_mode es7154_modes[] = {
+ {
+ /* Single speed mode */
+ .rate_min = 8000,
+ .rate_max = 50000,
+ .mclk_fs = (unsigned int[]) { 32, 64, 128, 192, 256,
+ 384, 512, 768, 1024 },
+ .mclk_fs_num = 9,
+ }, {
+ /* Double speed mode */
+ .rate_min = 84000,
+ .rate_max = 100000,
+ .mclk_fs = (unsigned int[]) { 128, 192, 256, 384, 512,
+ 768, 1024},
+ .mclk_fs_num = 7,
+ }
+};
+
+/* Es7154 has a separate supply for digital I/O */
+static const struct snd_soc_dapm_widget es7154_extra_widgets[] = {
+ SND_SOC_DAPM_REGULATOR_SUPPLY("PVDD", 0, 0),
+};
+
+static const struct snd_soc_dapm_route es7154_extra_routes[] = {
+ { "Playback", NULL, "PVDD", }
+};
+
+static const struct es7134_chip es7154_chip __maybe_unused = {
+ .dai_drv = &es7154_dai,
+ .modes = es7154_modes,
+ .mode_num = ARRAY_SIZE(es7154_modes),
+ .extra_routes = es7154_extra_routes,
+ .extra_route_num = ARRAY_SIZE(es7154_extra_routes),
+ .extra_widgets = es7154_extra_widgets,
+ .extra_widget_num = ARRAY_SIZE(es7154_extra_widgets),
+};
+
+static int es7134_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct es7134_data *priv;
+
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+ platform_set_drvdata(pdev, priv);
+
+ priv->chip = of_device_get_match_data(dev);
+ if (!priv->chip) {
+ dev_err(dev, "failed to match device\n");
+ return -ENODEV;
+ }
+
+ return devm_snd_soc_register_component(&pdev->dev,
+ &es7134_component_driver,
+ priv->chip->dai_drv, 1);
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id es7134_ids[] = {
+ { .compatible = "everest,es7134", .data = &es7134_chip },
+ { .compatible = "everest,es7144", .data = &es7134_chip },
+ { .compatible = "everest,es7154", .data = &es7154_chip },
+ { }
+};
+MODULE_DEVICE_TABLE(of, es7134_ids);
+#endif
+
+static struct platform_driver es7134_driver = {
+ .driver = {
+ .name = "es7134",
+ .of_match_table = of_match_ptr(es7134_ids),
+ },
+ .probe = es7134_probe,
+};
+
+module_platform_driver(es7134_driver);
+
+MODULE_DESCRIPTION("ASoC ES7134 audio codec driver");
+MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-12 21:33:23 +0000