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-rw-r--r--sound/soc/codecs/adau7118.c586
1 files changed, 586 insertions, 0 deletions
diff --git a/sound/soc/codecs/adau7118.c b/sound/soc/codecs/adau7118.c
new file mode 100644
index 000000000000..841229dcbca1
--- /dev/null
+++ b/sound/soc/codecs/adau7118.c
@@ -0,0 +1,586 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Analog Devices ADAU7118 8 channel PDM-to-I2S/TDM Converter driver
+//
+// Copyright 2019 Analog Devices Inc.
+
+#include <linux/bitfield.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+
+#include "adau7118.h"
+
+#define ADAU7118_DEC_RATIO_MASK GENMASK(1, 0)
+#define ADAU7118_DEC_RATIO(x) FIELD_PREP(ADAU7118_DEC_RATIO_MASK, x)
+#define ADAU7118_CLK_MAP_MASK GENMASK(7, 4)
+#define ADAU7118_SLOT_WIDTH_MASK GENMASK(5, 4)
+#define ADAU7118_SLOT_WIDTH(x) FIELD_PREP(ADAU7118_SLOT_WIDTH_MASK, x)
+#define ADAU7118_TRISTATE_MASK BIT(6)
+#define ADAU7118_TRISTATE(x) FIELD_PREP(ADAU7118_TRISTATE_MASK, x)
+#define ADAU7118_DATA_FMT_MASK GENMASK(3, 1)
+#define ADAU7118_DATA_FMT(x) FIELD_PREP(ADAU7118_DATA_FMT_MASK, x)
+#define ADAU7118_SAI_MODE_MASK BIT(0)
+#define ADAU7118_SAI_MODE(x) FIELD_PREP(ADAU7118_SAI_MODE_MASK, x)
+#define ADAU7118_LRCLK_BCLK_POL_MASK GENMASK(1, 0)
+#define ADAU7118_LRCLK_BCLK_POL(x) \
+ FIELD_PREP(ADAU7118_LRCLK_BCLK_POL_MASK, x)
+#define ADAU7118_SPT_SLOT_MASK GENMASK(7, 4)
+#define ADAU7118_SPT_SLOT(x) FIELD_PREP(ADAU7118_SPT_SLOT_MASK, x)
+#define ADAU7118_FULL_SOFT_R_MASK BIT(1)
+#define ADAU7118_FULL_SOFT_R(x) FIELD_PREP(ADAU7118_FULL_SOFT_R_MASK, x)
+
+struct adau7118_data {
+ struct regmap *map;
+ struct device *dev;
+ struct regulator *iovdd;
+ struct regulator *dvdd;
+ u32 slot_width;
+ u32 slots;
+ bool hw_mode;
+ bool right_j;
+};
+
+/* Input Enable */
+static const struct snd_kcontrol_new adau7118_dapm_pdm_control[4] = {
+ SOC_DAPM_SINGLE("Capture Switch", ADAU7118_REG_ENABLES, 0, 1, 0),
+ SOC_DAPM_SINGLE("Capture Switch", ADAU7118_REG_ENABLES, 1, 1, 0),
+ SOC_DAPM_SINGLE("Capture Switch", ADAU7118_REG_ENABLES, 2, 1, 0),
+ SOC_DAPM_SINGLE("Capture Switch", ADAU7118_REG_ENABLES, 3, 1, 0),
+};
+
+static const struct snd_soc_dapm_widget adau7118_widgets_sw[] = {
+ /* Input Enable Switches */
+ SND_SOC_DAPM_SWITCH("PDM0", SND_SOC_NOPM, 0, 0,
+ &adau7118_dapm_pdm_control[0]),
+ SND_SOC_DAPM_SWITCH("PDM1", SND_SOC_NOPM, 0, 0,
+ &adau7118_dapm_pdm_control[1]),
+ SND_SOC_DAPM_SWITCH("PDM2", SND_SOC_NOPM, 0, 0,
+ &adau7118_dapm_pdm_control[2]),
+ SND_SOC_DAPM_SWITCH("PDM3", SND_SOC_NOPM, 0, 0,
+ &adau7118_dapm_pdm_control[3]),
+
+ /* PDM Clocks */
+ SND_SOC_DAPM_SUPPLY("PDM_CLK0", ADAU7118_REG_ENABLES, 4, 0, NULL, 0),
+ SND_SOC_DAPM_SUPPLY("PDM_CLK1", ADAU7118_REG_ENABLES, 5, 0, NULL, 0),
+
+ /* Output channels */
+ SND_SOC_DAPM_AIF_OUT("AIF1TX1", "Capture", 0, ADAU7118_REG_SPT_CX(0),
+ 0, 0),
+ SND_SOC_DAPM_AIF_OUT("AIF1TX2", "Capture", 0, ADAU7118_REG_SPT_CX(1),
+ 0, 0),
+ SND_SOC_DAPM_AIF_OUT("AIF1TX3", "Capture", 0, ADAU7118_REG_SPT_CX(2),
+ 0, 0),
+ SND_SOC_DAPM_AIF_OUT("AIF1TX4", "Capture", 0, ADAU7118_REG_SPT_CX(3),
+ 0, 0),
+ SND_SOC_DAPM_AIF_OUT("AIF1TX5", "Capture", 0, ADAU7118_REG_SPT_CX(4),
+ 0, 0),
+ SND_SOC_DAPM_AIF_OUT("AIF1TX6", "Capture", 0, ADAU7118_REG_SPT_CX(5),
+ 0, 0),
+ SND_SOC_DAPM_AIF_OUT("AIF1TX7", "Capture", 0, ADAU7118_REG_SPT_CX(6),
+ 0, 0),
+ SND_SOC_DAPM_AIF_OUT("AIF1TX8", "Capture", 0, ADAU7118_REG_SPT_CX(7),
+ 0, 0),
+};
+
+static const struct snd_soc_dapm_route adau7118_routes_sw[] = {
+ { "PDM0", "Capture Switch", "PDM_DAT0" },
+ { "PDM1", "Capture Switch", "PDM_DAT1" },
+ { "PDM2", "Capture Switch", "PDM_DAT2" },
+ { "PDM3", "Capture Switch", "PDM_DAT3" },
+ { "AIF1TX1", NULL, "PDM0" },
+ { "AIF1TX2", NULL, "PDM0" },
+ { "AIF1TX3", NULL, "PDM1" },
+ { "AIF1TX4", NULL, "PDM1" },
+ { "AIF1TX5", NULL, "PDM2" },
+ { "AIF1TX6", NULL, "PDM2" },
+ { "AIF1TX7", NULL, "PDM3" },
+ { "AIF1TX8", NULL, "PDM3" },
+ { "Capture", NULL, "PDM_CLK0" },
+ { "Capture", NULL, "PDM_CLK1" },
+};
+
+static const struct snd_soc_dapm_widget adau7118_widgets_hw[] = {
+ SND_SOC_DAPM_AIF_OUT("AIF1TX", "Capture", 0, SND_SOC_NOPM, 0, 0),
+};
+
+static const struct snd_soc_dapm_route adau7118_routes_hw[] = {
+ { "AIF1TX", NULL, "PDM_DAT0" },
+ { "AIF1TX", NULL, "PDM_DAT1" },
+ { "AIF1TX", NULL, "PDM_DAT2" },
+ { "AIF1TX", NULL, "PDM_DAT3" },
+};
+
+static const struct snd_soc_dapm_widget adau7118_widgets[] = {
+ SND_SOC_DAPM_INPUT("PDM_DAT0"),
+ SND_SOC_DAPM_INPUT("PDM_DAT1"),
+ SND_SOC_DAPM_INPUT("PDM_DAT2"),
+ SND_SOC_DAPM_INPUT("PDM_DAT3"),
+};
+
+static int adau7118_set_channel_map(struct snd_soc_dai *dai,
+ unsigned int tx_num, unsigned int *tx_slot,
+ unsigned int rx_num, unsigned int *rx_slot)
+{
+ struct adau7118_data *st =
+ snd_soc_component_get_drvdata(dai->component);
+ int chan, ret;
+
+ dev_dbg(st->dev, "Set channel map, %d", tx_num);
+
+ for (chan = 0; chan < tx_num; chan++) {
+ ret = snd_soc_component_update_bits(dai->component,
+ ADAU7118_REG_SPT_CX(chan),
+ ADAU7118_SPT_SLOT_MASK,
+ ADAU7118_SPT_SLOT(tx_slot[chan]));
+ if (ret < 0)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int adau7118_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+ struct adau7118_data *st =
+ snd_soc_component_get_drvdata(dai->component);
+ int ret = 0;
+ u32 regval;
+
+ dev_dbg(st->dev, "Set format, fmt:%d\n", fmt);
+
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ ret = snd_soc_component_update_bits(dai->component,
+ ADAU7118_REG_SPT_CTRL1,
+ ADAU7118_DATA_FMT_MASK,
+ ADAU7118_DATA_FMT(0));
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ ret = snd_soc_component_update_bits(dai->component,
+ ADAU7118_REG_SPT_CTRL1,
+ ADAU7118_DATA_FMT_MASK,
+ ADAU7118_DATA_FMT(1));
+ break;
+ case SND_SOC_DAIFMT_RIGHT_J:
+ st->right_j = true;
+ break;
+ default:
+ dev_err(st->dev, "Invalid format %d",
+ fmt & SND_SOC_DAIFMT_FORMAT_MASK);
+ return -EINVAL;
+ }
+
+ if (ret < 0)
+ return ret;
+
+ switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+ case SND_SOC_DAIFMT_NB_NF:
+ regval = ADAU7118_LRCLK_BCLK_POL(0);
+ break;
+ case SND_SOC_DAIFMT_NB_IF:
+ regval = ADAU7118_LRCLK_BCLK_POL(2);
+ break;
+ case SND_SOC_DAIFMT_IB_NF:
+ regval = ADAU7118_LRCLK_BCLK_POL(1);
+ break;
+ case SND_SOC_DAIFMT_IB_IF:
+ regval = ADAU7118_LRCLK_BCLK_POL(3);
+ break;
+ default:
+ dev_err(st->dev, "Invalid Inv mask %d",
+ fmt & SND_SOC_DAIFMT_INV_MASK);
+ return -EINVAL;
+ }
+
+ ret = snd_soc_component_update_bits(dai->component,
+ ADAU7118_REG_SPT_CTRL2,
+ ADAU7118_LRCLK_BCLK_POL_MASK,
+ regval);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int adau7118_set_tristate(struct snd_soc_dai *dai, int tristate)
+{
+ struct adau7118_data *st =
+ snd_soc_component_get_drvdata(dai->component);
+ int ret;
+
+ dev_dbg(st->dev, "Set tristate, %d\n", tristate);
+
+ ret = snd_soc_component_update_bits(dai->component,
+ ADAU7118_REG_SPT_CTRL1,
+ ADAU7118_TRISTATE_MASK,
+ ADAU7118_TRISTATE(tristate));
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int adau7118_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
+ unsigned int rx_mask, int slots,
+ int slot_width)
+{
+ struct adau7118_data *st =
+ snd_soc_component_get_drvdata(dai->component);
+ int ret = 0;
+ u32 regval;
+
+ dev_dbg(st->dev, "Set tdm, slots:%d width:%d\n", slots, slot_width);
+
+ switch (slot_width) {
+ case 32:
+ regval = ADAU7118_SLOT_WIDTH(0);
+ break;
+ case 24:
+ regval = ADAU7118_SLOT_WIDTH(2);
+ break;
+ case 16:
+ regval = ADAU7118_SLOT_WIDTH(1);
+ break;
+ default:
+ dev_err(st->dev, "Invalid slot width:%d\n", slot_width);
+ return -EINVAL;
+ }
+
+ ret = snd_soc_component_update_bits(dai->component,
+ ADAU7118_REG_SPT_CTRL1,
+ ADAU7118_SLOT_WIDTH_MASK, regval);
+ if (ret < 0)
+ return ret;
+
+ st->slot_width = slot_width;
+ st->slots = slots;
+
+ return 0;
+}
+
+static int adau7118_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct adau7118_data *st =
+ snd_soc_component_get_drvdata(dai->component);
+ u32 data_width = params_width(params), slots_width;
+ int ret;
+ u32 regval;
+
+ if (!st->slots) {
+ /* set stereo mode */
+ ret = snd_soc_component_update_bits(dai->component,
+ ADAU7118_REG_SPT_CTRL1,
+ ADAU7118_SAI_MODE_MASK,
+ ADAU7118_SAI_MODE(0));
+ if (ret < 0)
+ return ret;
+
+ slots_width = 32;
+ } else {
+ slots_width = st->slot_width;
+ }
+
+ if (data_width > slots_width) {
+ dev_err(st->dev, "Invalid data_width:%d, slots_width:%d",
+ data_width, slots_width);
+ return -EINVAL;
+ }
+
+ if (st->right_j) {
+ switch (slots_width - data_width) {
+ case 8:
+ /* delay bclck by 8 */
+ regval = ADAU7118_DATA_FMT(2);
+ break;
+ case 12:
+ /* delay bclck by 12 */
+ regval = ADAU7118_DATA_FMT(3);
+ break;
+ case 16:
+ /* delay bclck by 16 */
+ regval = ADAU7118_DATA_FMT(4);
+ break;
+ default:
+ dev_err(st->dev,
+ "Cannot set right_j setting, slot_w:%d, data_w:%d\n",
+ slots_width, data_width);
+ return -EINVAL;
+ }
+
+ ret = snd_soc_component_update_bits(dai->component,
+ ADAU7118_REG_SPT_CTRL1,
+ ADAU7118_DATA_FMT_MASK,
+ regval);
+ if (ret < 0)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int adau7118_set_bias_level(struct snd_soc_component *component,
+ enum snd_soc_bias_level level)
+{
+ struct adau7118_data *st = snd_soc_component_get_drvdata(component);
+ int ret = 0;
+
+ dev_dbg(st->dev, "Set bias level %d\n", level);
+
+ switch (level) {
+ case SND_SOC_BIAS_ON:
+ case SND_SOC_BIAS_PREPARE:
+ break;
+
+ case SND_SOC_BIAS_STANDBY:
+ if (snd_soc_component_get_bias_level(component) ==
+ SND_SOC_BIAS_OFF) {
+ /* power on */
+ ret = regulator_enable(st->iovdd);
+ if (ret)
+ return ret;
+
+ /* there's no timing constraints before enabling dvdd */
+ ret = regulator_enable(st->dvdd);
+ if (ret) {
+ regulator_disable(st->iovdd);
+ return ret;
+ }
+
+ if (st->hw_mode)
+ return 0;
+
+ regcache_cache_only(st->map, false);
+ /* sync cache */
+ ret = snd_soc_component_cache_sync(component);
+ }
+ break;
+ case SND_SOC_BIAS_OFF:
+ /* power off */
+ ret = regulator_disable(st->dvdd);
+ if (ret)
+ return ret;
+
+ ret = regulator_disable(st->iovdd);
+ if (ret)
+ return ret;
+
+ if (st->hw_mode)
+ return 0;
+
+ /* cache only */
+ regcache_mark_dirty(st->map);
+ regcache_cache_only(st->map, true);
+
+ break;
+ }
+
+ return ret;
+}
+
+static int adau7118_component_probe(struct snd_soc_component *component)
+{
+ struct adau7118_data *st = snd_soc_component_get_drvdata(component);
+ struct snd_soc_dapm_context *dapm =
+ snd_soc_component_get_dapm(component);
+ int ret = 0;
+
+ if (st->hw_mode) {
+ ret = snd_soc_dapm_new_controls(dapm, adau7118_widgets_hw,
+ ARRAY_SIZE(adau7118_widgets_hw));
+ if (ret)
+ return ret;
+
+ ret = snd_soc_dapm_add_routes(dapm, adau7118_routes_hw,
+ ARRAY_SIZE(adau7118_routes_hw));
+ } else {
+ snd_soc_component_init_regmap(component, st->map);
+ ret = snd_soc_dapm_new_controls(dapm, adau7118_widgets_sw,
+ ARRAY_SIZE(adau7118_widgets_sw));
+ if (ret)
+ return ret;
+
+ ret = snd_soc_dapm_add_routes(dapm, adau7118_routes_sw,
+ ARRAY_SIZE(adau7118_routes_sw));
+ }
+
+ return ret;
+}
+
+static const struct snd_soc_dai_ops adau7118_ops = {
+ .hw_params = adau7118_hw_params,
+ .set_channel_map = adau7118_set_channel_map,
+ .set_fmt = adau7118_set_fmt,
+ .set_tdm_slot = adau7118_set_tdm_slot,
+ .set_tristate = adau7118_set_tristate,
+};
+
+static struct snd_soc_dai_driver adau7118_dai = {
+ .name = "adau7118-hifi-capture",
+ .capture = {
+ .stream_name = "Capture",
+ .channels_min = 1,
+ .channels_max = 8,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |
+ SNDRV_PCM_FMTBIT_S20_LE | SNDRV_PCM_FMTBIT_S24_LE |
+ SNDRV_PCM_FMTBIT_S24_3LE,
+ .rates = SNDRV_PCM_RATE_CONTINUOUS,
+ .rate_min = 4000,
+ .rate_max = 192000,
+ .sig_bits = 24,
+ },
+};
+
+static const struct snd_soc_component_driver adau7118_component_driver = {
+ .probe = adau7118_component_probe,
+ .set_bias_level = adau7118_set_bias_level,
+ .dapm_widgets = adau7118_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(adau7118_widgets),
+ .use_pmdown_time = 1,
+ .endianness = 1,
+ .non_legacy_dai_naming = 1,
+};
+
+static void adau7118_regulator_disable(void *data)
+{
+ struct adau7118_data *st = data;
+ int ret;
+ /*
+ * If we fail to disable DVDD, don't bother in trying IOVDD. We
+ * actually don't want to be left in the situation where DVDD
+ * is enabled and IOVDD is disabled.
+ */
+ ret = regulator_disable(st->dvdd);
+ if (ret)
+ return;
+
+ regulator_disable(st->iovdd);
+}
+
+static int adau7118_regulator_setup(struct adau7118_data *st)
+{
+ st->iovdd = devm_regulator_get(st->dev, "iovdd");
+ if (IS_ERR(st->iovdd)) {
+ dev_err(st->dev, "Could not get iovdd: %ld\n",
+ PTR_ERR(st->iovdd));
+ return PTR_ERR(st->iovdd);
+ }
+
+ st->dvdd = devm_regulator_get(st->dev, "dvdd");
+ if (IS_ERR(st->dvdd)) {
+ dev_err(st->dev, "Could not get dvdd: %ld\n",
+ PTR_ERR(st->dvdd));
+ return PTR_ERR(st->dvdd);
+ }
+ /* just assume the device is in reset */
+ if (!st->hw_mode) {
+ regcache_mark_dirty(st->map);
+ regcache_cache_only(st->map, true);
+ }
+
+ return devm_add_action_or_reset(st->dev, adau7118_regulator_disable,
+ st);
+}
+
+static int adau7118_parset_dt(const struct adau7118_data *st)
+{
+ int ret;
+ u32 dec_ratio = 0;
+ /* 4 inputs */
+ u32 clk_map[4], regval;
+
+ if (st->hw_mode)
+ return 0;
+
+ ret = device_property_read_u32(st->dev, "adi,decimation-ratio",
+ &dec_ratio);
+ if (!ret) {
+ switch (dec_ratio) {
+ case 64:
+ regval = ADAU7118_DEC_RATIO(0);
+ break;
+ case 32:
+ regval = ADAU7118_DEC_RATIO(1);
+ break;
+ case 16:
+ regval = ADAU7118_DEC_RATIO(2);
+ break;
+ default:
+ dev_err(st->dev, "Invalid dec ratio: %u", dec_ratio);
+ return -EINVAL;
+ }
+
+ ret = regmap_update_bits(st->map,
+ ADAU7118_REG_DEC_RATIO_CLK_MAP,
+ ADAU7118_DEC_RATIO_MASK, regval);
+ if (ret)
+ return ret;
+ }
+
+ ret = device_property_read_u32_array(st->dev, "adi,pdm-clk-map",
+ clk_map, ARRAY_SIZE(clk_map));
+ if (!ret) {
+ int pdm;
+ u32 _clk_map = 0;
+
+ for (pdm = 0; pdm < ARRAY_SIZE(clk_map); pdm++)
+ _clk_map |= (clk_map[pdm] << (pdm + 4));
+
+ ret = regmap_update_bits(st->map,
+ ADAU7118_REG_DEC_RATIO_CLK_MAP,
+ ADAU7118_CLK_MAP_MASK, _clk_map);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+int adau7118_probe(struct device *dev, struct regmap *map, bool hw_mode)
+{
+ struct adau7118_data *st;
+ int ret;
+
+ st = devm_kzalloc(dev, sizeof(*st), GFP_KERNEL);
+ if (!st)
+ return -ENOMEM;
+
+ st->dev = dev;
+ st->hw_mode = hw_mode;
+ dev_set_drvdata(dev, st);
+
+ if (!hw_mode) {
+ st->map = map;
+ adau7118_dai.ops = &adau7118_ops;
+ /*
+ * Perform a full soft reset. This will set all register's
+ * with their reset values.
+ */
+ ret = regmap_update_bits(map, ADAU7118_REG_RESET,
+ ADAU7118_FULL_SOFT_R_MASK,
+ ADAU7118_FULL_SOFT_R(1));
+ if (ret)
+ return ret;
+ }
+
+ ret = adau7118_parset_dt(st);
+ if (ret)
+ return ret;
+
+ ret = adau7118_regulator_setup(st);
+ if (ret)
+ return ret;
+
+ return devm_snd_soc_register_component(dev,
+ &adau7118_component_driver,
+ &adau7118_dai, 1);
+}
+EXPORT_SYMBOL_GPL(adau7118_probe);
+
+MODULE_AUTHOR("Nuno Sa <nuno.sa@analog.com>");
+MODULE_DESCRIPTION("ADAU7118 8 channel PDM-to-I2S/TDM Converter driver");
+MODULE_LICENSE("GPL");
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.