--- /dev/null
+/*
+ * TAS5086 ASoC codec driver
+ *
+ * Copyright (c) 2013 Daniel Mack <zonque@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * TODO:
+ * - implement DAPM and input muxing
+ * - implement modulation limit
+ * - implement non-default PWM start
+ *
+ * Note that this chip has a very unusual register layout, specifically
+ * because the registers are of unequal size, and multi-byte registers
+ * require bulk writes to take effect. Regmap does not support that kind
+ * of devices.
+ *
+ * Currently, the driver does not touch any of the registers >= 0x20, so
+ * it doesn't matter because the entire map can be accessed as 8-bit
+ * array. In case more features will be added in the future
+ * that require access to higher registers, the entire regmap H/W I/O
+ * routines have to be open-coded.
+ */
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/i2c.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <linux/spi/spi.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_gpio.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/tlv.h>
+#include <sound/tas5086.h>
+
+#define TAS5086_PCM_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
+ SNDRV_PCM_FMTBIT_S20_3LE | \
+ SNDRV_PCM_FMTBIT_S24_3LE)
+
+#define TAS5086_PCM_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
+ SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | \
+ SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 | \
+ SNDRV_PCM_RATE_192000)
+
+/*
+ * TAS5086 registers
+ */
+#define TAS5086_CLOCK_CONTROL 0x00 /* Clock control register */
+#define TAS5086_CLOCK_RATE(val) (val << 5)
+#define TAS5086_CLOCK_RATE_MASK (0x7 << 5)
+#define TAS5086_CLOCK_RATIO(val) (val << 2)
+#define TAS5086_CLOCK_RATIO_MASK (0x7 << 2)
+#define TAS5086_CLOCK_SCLK_RATIO_48 (1 << 1)
+#define TAS5086_CLOCK_VALID (1 << 0)
+
+#define TAS5086_DEEMPH_MASK 0x03
+#define TAS5086_SOFT_MUTE_ALL 0x3f
+
+#define TAS5086_DEV_ID 0x01 /* Device ID register */
+#define TAS5086_ERROR_STATUS 0x02 /* Error status register */
+#define TAS5086_SYS_CONTROL_1 0x03 /* System control register 1 */
+#define TAS5086_SERIAL_DATA_IF 0x04 /* Serial data interface register */
+#define TAS5086_SYS_CONTROL_2 0x05 /* System control register 2 */
+#define TAS5086_SOFT_MUTE 0x06 /* Soft mute register */
+#define TAS5086_MASTER_VOL 0x07 /* Master volume */
+#define TAS5086_CHANNEL_VOL(X) (0x08 + (X)) /* Channel 1-6 volume */
+#define TAS5086_VOLUME_CONTROL 0x09 /* Volume control register */
+#define TAS5086_MOD_LIMIT 0x10 /* Modulation limit register */
+#define TAS5086_PWM_START 0x18 /* PWM start register */
+#define TAS5086_SURROUND 0x19 /* Surround register */
+#define TAS5086_SPLIT_CAP_CHARGE 0x1a /* Split cap charge period register */
+#define TAS5086_OSC_TRIM 0x1b /* Oscillator trim register */
+#define TAS5086_BKNDERR 0x1c
+#define TAS5086_INPUT_MUX 0x20
+#define TAS5086_PWM_OUTPUT_MUX 0x25
+
+#define TAS5086_MAX_REGISTER TAS5086_PWM_OUTPUT_MUX
+
+#define TAS5086_PWM_START_MIDZ_FOR_START_1 (1 << 7)
+#define TAS5086_PWM_START_MIDZ_FOR_START_2 (1 << 6)
+#define TAS5086_PWM_START_CHANNEL_MASK (0x3f)
+
+/*
+ * Default TAS5086 power-up configuration
+ */
+static const struct reg_default tas5086_reg_defaults[] = {
+ { 0x00, 0x6c },
+ { 0x01, 0x03 },
+ { 0x02, 0x00 },
+ { 0x03, 0xa0 },
+ { 0x04, 0x05 },
+ { 0x05, 0x60 },
+ { 0x06, 0x00 },
+ { 0x07, 0xff },
+ { 0x08, 0x30 },
+ { 0x09, 0x30 },
+ { 0x0a, 0x30 },
+ { 0x0b, 0x30 },
+ { 0x0c, 0x30 },
+ { 0x0d, 0x30 },
+ { 0x0e, 0xb1 },
+ { 0x0f, 0x00 },
+ { 0x10, 0x02 },
+ { 0x11, 0x00 },
+ { 0x12, 0x00 },
+ { 0x13, 0x00 },
+ { 0x14, 0x00 },
+ { 0x15, 0x00 },
+ { 0x16, 0x00 },
+ { 0x17, 0x00 },
+ { 0x18, 0x3f },
+ { 0x19, 0x00 },
+ { 0x1a, 0x18 },
+ { 0x1b, 0x82 },
+ { 0x1c, 0x05 },
+};
+
+static int tas5086_register_size(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case TAS5086_CLOCK_CONTROL ... TAS5086_BKNDERR:
+ return 1;
+ case TAS5086_INPUT_MUX:
+ case TAS5086_PWM_OUTPUT_MUX:
+ return 4;
+ }
+
+ dev_err(dev, "Unsupported register address: %d\n", reg);
+ return 0;
+}
+
+static bool tas5086_accessible_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case 0x0f:
+ case 0x11 ... 0x17:
+ case 0x1d ... 0x1f:
+ return false;
+ default:
+ return true;
+ }
+}
+
+static bool tas5086_volatile_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case TAS5086_DEV_ID:
+ case TAS5086_ERROR_STATUS:
+ return true;
+ }
+
+ return false;
+}
+
+static bool tas5086_writeable_reg(struct device *dev, unsigned int reg)
+{
+ return tas5086_accessible_reg(dev, reg) && (reg != TAS5086_DEV_ID);
+}
+
+static int tas5086_reg_write(void *context, unsigned int reg,
+ unsigned int value)
+{
+ struct i2c_client *client = context;
+ unsigned int i, size;
+ uint8_t buf[5];
+ int ret;
+
+ size = tas5086_register_size(&client->dev, reg);
+ if (size == 0)
+ return -EINVAL;
+
+ buf[0] = reg;
+
+ for (i = size; i >= 1; --i) {
+ buf[i] = value;
+ value >>= 8;
+ }
+
+ ret = i2c_master_send(client, buf, size + 1);
+ if (ret == size + 1)
+ return 0;
+ else if (ret < 0)
+ return ret;
+ else
+ return -EIO;
+}
+
+static int tas5086_reg_read(void *context, unsigned int reg,
+ unsigned int *value)
+{
+ struct i2c_client *client = context;
+ uint8_t send_buf, recv_buf[4];
+ struct i2c_msg msgs[2];
+ unsigned int size;
+ unsigned int i;
+ int ret;
+
+ size = tas5086_register_size(&client->dev, reg);
+ if (size == 0)
+ return -EINVAL;
+
+ send_buf = reg;
+
+ msgs[0].addr = client->addr;
+ msgs[0].len = sizeof(send_buf);
+ msgs[0].buf = &send_buf;
+ msgs[0].flags = 0;
+
+ msgs[1].addr = client->addr;
+ msgs[1].len = size;
+ msgs[1].buf = recv_buf;
+ msgs[1].flags = I2C_M_RD;
+
+ ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
+ if (ret < 0)
+ return ret;
+ else if (ret != ARRAY_SIZE(msgs))
+ return -EIO;
+
+ *value = 0;
+
+ for (i = 0; i < size; i++) {
+ *value <<= 8;
+ *value |= recv_buf[i];
+ }
+
+ return 0;
+}
+
+static const char * const supply_names[] = {
+ "dvdd", "avdd"
+};
+
+struct tas5086_private {
+ struct regmap *regmap;
+ unsigned int mclk, sclk;
+ unsigned int format;
+ bool deemph;
+ unsigned int charge_period;
+ unsigned int pwm_start_mid_z;
+ /* Current sample rate for de-emphasis control */
+ int rate;
+ /* GPIO driving Reset pin, if any */
+ int gpio_nreset;
+ struct regulator_bulk_data supplies[ARRAY_SIZE(supply_names)];
+};
+
+static int tas5086_deemph[] = { 0, 32000, 44100, 48000 };
+
+static int tas5086_set_deemph(struct snd_soc_codec *codec)
+{
+ struct tas5086_private *priv = snd_soc_codec_get_drvdata(codec);
+ int i, val = 0;
+
+ if (priv->deemph)
+ for (i = 0; i < ARRAY_SIZE(tas5086_deemph); i++)
+ if (tas5086_deemph[i] == priv->rate)
+ val = i;
+
+ return regmap_update_bits(priv->regmap, TAS5086_SYS_CONTROL_1,
+ TAS5086_DEEMPH_MASK, val);
+}
+
+static int tas5086_get_deemph(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
+ struct tas5086_private *priv = snd_soc_codec_get_drvdata(codec);
+
+ ucontrol->value.integer.value[0] = priv->deemph;
+
+ return 0;
+}
+
+static int tas5086_put_deemph(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
+ struct tas5086_private *priv = snd_soc_codec_get_drvdata(codec);
+
+ priv->deemph = ucontrol->value.integer.value[0];
+
+ return tas5086_set_deemph(codec);
+}
+
+
+static int tas5086_set_dai_sysclk(struct snd_soc_dai *codec_dai,
+ int clk_id, unsigned int freq, int dir)
+{
+ struct snd_soc_codec *codec = codec_dai->codec;
+ struct tas5086_private *priv = snd_soc_codec_get_drvdata(codec);
+
+ switch (clk_id) {
+ case TAS5086_CLK_IDX_MCLK:
+ priv->mclk = freq;
+ break;
+ case TAS5086_CLK_IDX_SCLK:
+ priv->sclk = freq;
+ break;
+ }
+
+ return 0;
+}
+
+static int tas5086_set_dai_fmt(struct snd_soc_dai *codec_dai,
+ unsigned int format)
+{
+ struct snd_soc_codec *codec = codec_dai->codec;
+ struct tas5086_private *priv = snd_soc_codec_get_drvdata(codec);
+
+ /* The TAS5086 can only be slave to all clocks */
+ if ((format & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_CBS_CFS) {
+ dev_err(codec->dev, "Invalid clocking mode\n");
+ return -EINVAL;
+ }
+
+ /* we need to refer to the data format from hw_params() */
+ priv->format = format;
+
+ return 0;
+}
+
+static const int tas5086_sample_rates[] = {
+ 32000, 38000, 44100, 48000, 88200, 96000, 176400, 192000
+};
+
+static const int tas5086_ratios[] = {
+ 64, 128, 192, 256, 384, 512
+};
+
+static int index_in_array(const int *array, int len, int needle)
+{
+ int i;
+
+ for (i = 0; i < len; i++)
+ if (array[i] == needle)
+ return i;
+
+ return -ENOENT;
+}
+
+static int tas5086_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_codec *codec = dai->codec;
+ struct tas5086_private *priv = snd_soc_codec_get_drvdata(codec);
+ int val;
+ int ret;
+
+ priv->rate = params_rate(params);
+
+ /* Look up the sample rate and refer to the offset in the list */
+ val = index_in_array(tas5086_sample_rates,
+ ARRAY_SIZE(tas5086_sample_rates), priv->rate);
+
+ if (val < 0) {
+ dev_err(codec->dev, "Invalid sample rate\n");
+ return -EINVAL;
+ }
+
+ ret = regmap_update_bits(priv->regmap, TAS5086_CLOCK_CONTROL,
+ TAS5086_CLOCK_RATE_MASK,
+ TAS5086_CLOCK_RATE(val));
+ if (ret < 0)
+ return ret;
+
+ /* MCLK / Fs ratio */
+ val = index_in_array(tas5086_ratios, ARRAY_SIZE(tas5086_ratios),
+ priv->mclk / priv->rate);
+ if (val < 0) {
+ dev_err(codec->dev, "Inavlid MCLK / Fs ratio\n");
+ return -EINVAL;
+ }
+
+ ret = regmap_update_bits(priv->regmap, TAS5086_CLOCK_CONTROL,
+ TAS5086_CLOCK_RATIO_MASK,
+ TAS5086_CLOCK_RATIO(val));
+ if (ret < 0)
+ return ret;
+
+
+ ret = regmap_update_bits(priv->regmap, TAS5086_CLOCK_CONTROL,
+ TAS5086_CLOCK_SCLK_RATIO_48,
+ (priv->sclk == 48 * priv->rate) ?
+ TAS5086_CLOCK_SCLK_RATIO_48 : 0);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * The chip has a very unituitive register mapping and muxes information
+ * about data format and sample depth into the same register, but not on
+ * a logical bit-boundary. Hence, we have to refer to the format passed
+ * in the set_dai_fmt() callback and set up everything from here.
+ *
+ * First, determine the 'base' value, using the format ...
+ */
+ switch (priv->format & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_RIGHT_J:
+ val = 0x00;
+ break;
+ case SND_SOC_DAIFMT_I2S:
+ val = 0x03;
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ val = 0x06;
+ break;
+ default:
+ dev_err(codec->dev, "Invalid DAI format\n");
+ return -EINVAL;
+ }
+
+ /* ... then add the offset for the sample bit depth. */
+ switch (params_width(params)) {
+ case 16:
+ val += 0;
+ break;
+ case 20:
+ val += 1;
+ break;
+ case 24:
+ val += 2;
+ break;
+ default:
+ dev_err(codec->dev, "Invalid bit width\n");
+ return -EINVAL;
+ }
+
+ ret = regmap_write(priv->regmap, TAS5086_SERIAL_DATA_IF, val);
+ if (ret < 0)
+ return ret;
+
+ /* clock is considered valid now */
+ ret = regmap_update_bits(priv->regmap, TAS5086_CLOCK_CONTROL,
+ TAS5086_CLOCK_VALID, TAS5086_CLOCK_VALID);
+ if (ret < 0)
+ return ret;
+
+ return tas5086_set_deemph(codec);
+}
+
+static int tas5086_mute_stream(struct snd_soc_dai *dai, int mute, int stream)
+{
+ struct snd_soc_codec *codec = dai->codec;
+ struct tas5086_private *priv = snd_soc_codec_get_drvdata(codec);
+ unsigned int val = 0;
+
+ if (mute)
+ val = TAS5086_SOFT_MUTE_ALL;
+
+ return regmap_write(priv->regmap, TAS5086_SOFT_MUTE, val);
+}
+
+static void tas5086_reset(struct tas5086_private *priv)
+{
+ if (gpio_is_valid(priv->gpio_nreset)) {
+ /* Reset codec - minimum assertion time is 400ns */
+ gpio_direction_output(priv->gpio_nreset, 0);
+ udelay(1);
+ gpio_set_value(priv->gpio_nreset, 1);
+
+ /* Codec needs ~15ms to wake up */
+ msleep(15);
+ }
+}
+
+/* charge period values in microseconds */
+static const int tas5086_charge_period[] = {
+ 13000, 16900, 23400, 31200, 41600, 54600, 72800, 96200,
+ 130000, 156000, 234000, 312000, 416000, 546000, 728000, 962000,
+ 1300000, 169000, 2340000, 3120000, 4160000, 5460000, 7280000, 9620000,
+};
+
+static int tas5086_init(struct device *dev, struct tas5086_private *priv)
+{
+ int ret, i;
+
+ /*
+ * If any of the channels is configured to start in Mid-Z mode,
+ * configure 'part 1' of the PWM starts to use Mid-Z, and tell
+ * all configured mid-z channels to start start under 'part 1'.
+ */
+ if (priv->pwm_start_mid_z)
+ regmap_write(priv->regmap, TAS5086_PWM_START,
+ TAS5086_PWM_START_MIDZ_FOR_START_1 |
+ priv->pwm_start_mid_z);
+
+ /* lookup and set split-capacitor charge period */
+ if (priv->charge_period == 0) {
+ regmap_write(priv->regmap, TAS5086_SPLIT_CAP_CHARGE, 0);
+ } else {
+ i = index_in_array(tas5086_charge_period,
+ ARRAY_SIZE(tas5086_charge_period),
+ priv->charge_period);
+ if (i >= 0)
+ regmap_write(priv->regmap, TAS5086_SPLIT_CAP_CHARGE,
+ i + 0x08);
+ else
+ dev_warn(dev,
+ "Invalid split-cap charge period of %d ns.\n",
+ priv->charge_period);
+ }
+
+ /* enable factory trim */
+ ret = regmap_write(priv->regmap, TAS5086_OSC_TRIM, 0x00);
+ if (ret < 0)
+ return ret;
+
+ /* start all channels */
+ ret = regmap_write(priv->regmap, TAS5086_SYS_CONTROL_2, 0x20);
+ if (ret < 0)
+ return ret;
+
+ /* mute all channels for now */
+ ret = regmap_write(priv->regmap, TAS5086_SOFT_MUTE,
+ TAS5086_SOFT_MUTE_ALL);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+/* TAS5086 controls */
+static const DECLARE_TLV_DB_SCALE(tas5086_dac_tlv, -10350, 50, 1);
+
+static const struct snd_kcontrol_new tas5086_controls[] = {
+ SOC_SINGLE_TLV("Master Playback Volume", TAS5086_MASTER_VOL,
+ 0, 0xff, 1, tas5086_dac_tlv),
+ SOC_DOUBLE_R_TLV("Channel 1/2 Playback Volume",
+ TAS5086_CHANNEL_VOL(0), TAS5086_CHANNEL_VOL(1),
+ 0, 0xff, 1, tas5086_dac_tlv),
+ SOC_DOUBLE_R_TLV("Channel 3/4 Playback Volume",
+ TAS5086_CHANNEL_VOL(2), TAS5086_CHANNEL_VOL(3),
+ 0, 0xff, 1, tas5086_dac_tlv),
+ SOC_DOUBLE_R_TLV("Channel 5/6 Playback Volume",
+ TAS5086_CHANNEL_VOL(4), TAS5086_CHANNEL_VOL(5),
+ 0, 0xff, 1, tas5086_dac_tlv),
+ SOC_SINGLE_BOOL_EXT("De-emphasis Switch", 0,
+ tas5086_get_deemph, tas5086_put_deemph),
+};
+
+/* Input mux controls */
+static const char *tas5086_dapm_sdin_texts[] =
+{
+ "SDIN1-L", "SDIN1-R", "SDIN2-L", "SDIN2-R",
+ "SDIN3-L", "SDIN3-R", "Ground (0)", "nc"
+};
+
+static const struct soc_enum tas5086_dapm_input_mux_enum[] = {
+ SOC_ENUM_SINGLE(TAS5086_INPUT_MUX, 20, 8, tas5086_dapm_sdin_texts),
+ SOC_ENUM_SINGLE(TAS5086_INPUT_MUX, 16, 8, tas5086_dapm_sdin_texts),
+ SOC_ENUM_SINGLE(TAS5086_INPUT_MUX, 12, 8, tas5086_dapm_sdin_texts),
+ SOC_ENUM_SINGLE(TAS5086_INPUT_MUX, 8, 8, tas5086_dapm_sdin_texts),
+ SOC_ENUM_SINGLE(TAS5086_INPUT_MUX, 4, 8, tas5086_dapm_sdin_texts),
+ SOC_ENUM_SINGLE(TAS5086_INPUT_MUX, 0, 8, tas5086_dapm_sdin_texts),
+};
+
+static const struct snd_kcontrol_new tas5086_dapm_input_mux_controls[] = {
+ SOC_DAPM_ENUM("Channel 1 input", tas5086_dapm_input_mux_enum[0]),
+ SOC_DAPM_ENUM("Channel 2 input", tas5086_dapm_input_mux_enum[1]),
+ SOC_DAPM_ENUM("Channel 3 input", tas5086_dapm_input_mux_enum[2]),
+ SOC_DAPM_ENUM("Channel 4 input", tas5086_dapm_input_mux_enum[3]),
+ SOC_DAPM_ENUM("Channel 5 input", tas5086_dapm_input_mux_enum[4]),
+ SOC_DAPM_ENUM("Channel 6 input", tas5086_dapm_input_mux_enum[5]),
+};
+
+/* Output mux controls */
+static const char *tas5086_dapm_channel_texts[] =
+ { "Channel 1 Mux", "Channel 2 Mux", "Channel 3 Mux",
+ "Channel 4 Mux", "Channel 5 Mux", "Channel 6 Mux" };
+
+static const struct soc_enum tas5086_dapm_output_mux_enum[] = {
+ SOC_ENUM_SINGLE(TAS5086_PWM_OUTPUT_MUX, 20, 6, tas5086_dapm_channel_texts),
+ SOC_ENUM_SINGLE(TAS5086_PWM_OUTPUT_MUX, 16, 6, tas5086_dapm_channel_texts),
+ SOC_ENUM_SINGLE(TAS5086_PWM_OUTPUT_MUX, 12, 6, tas5086_dapm_channel_texts),
+ SOC_ENUM_SINGLE(TAS5086_PWM_OUTPUT_MUX, 8, 6, tas5086_dapm_channel_texts),
+ SOC_ENUM_SINGLE(TAS5086_PWM_OUTPUT_MUX, 4, 6, tas5086_dapm_channel_texts),
+ SOC_ENUM_SINGLE(TAS5086_PWM_OUTPUT_MUX, 0, 6, tas5086_dapm_channel_texts),
+};
+
+static const struct snd_kcontrol_new tas5086_dapm_output_mux_controls[] = {
+ SOC_DAPM_ENUM("PWM1 Output", tas5086_dapm_output_mux_enum[0]),
+ SOC_DAPM_ENUM("PWM2 Output", tas5086_dapm_output_mux_enum[1]),
+ SOC_DAPM_ENUM("PWM3 Output", tas5086_dapm_output_mux_enum[2]),
+ SOC_DAPM_ENUM("PWM4 Output", tas5086_dapm_output_mux_enum[3]),
+ SOC_DAPM_ENUM("PWM5 Output", tas5086_dapm_output_mux_enum[4]),
+ SOC_DAPM_ENUM("PWM6 Output", tas5086_dapm_output_mux_enum[5]),
+};
+
+static const struct snd_soc_dapm_widget tas5086_dapm_widgets[] = {
+ SND_SOC_DAPM_INPUT("SDIN1-L"),
+ SND_SOC_DAPM_INPUT("SDIN1-R"),
+ SND_SOC_DAPM_INPUT("SDIN2-L"),
+ SND_SOC_DAPM_INPUT("SDIN2-R"),
+ SND_SOC_DAPM_INPUT("SDIN3-L"),
+ SND_SOC_DAPM_INPUT("SDIN3-R"),
+ SND_SOC_DAPM_INPUT("SDIN4-L"),
+ SND_SOC_DAPM_INPUT("SDIN4-R"),
+
+ SND_SOC_DAPM_OUTPUT("PWM1"),
+ SND_SOC_DAPM_OUTPUT("PWM2"),
+ SND_SOC_DAPM_OUTPUT("PWM3"),
+ SND_SOC_DAPM_OUTPUT("PWM4"),
+ SND_SOC_DAPM_OUTPUT("PWM5"),
+ SND_SOC_DAPM_OUTPUT("PWM6"),
+
+ SND_SOC_DAPM_MUX("Channel 1 Mux", SND_SOC_NOPM, 0, 0,
+ &tas5086_dapm_input_mux_controls[0]),
+ SND_SOC_DAPM_MUX("Channel 2 Mux", SND_SOC_NOPM, 0, 0,
+ &tas5086_dapm_input_mux_controls[1]),
+ SND_SOC_DAPM_MUX("Channel 3 Mux", SND_SOC_NOPM, 0, 0,
+ &tas5086_dapm_input_mux_controls[2]),
+ SND_SOC_DAPM_MUX("Channel 4 Mux", SND_SOC_NOPM, 0, 0,
+ &tas5086_dapm_input_mux_controls[3]),
+ SND_SOC_DAPM_MUX("Channel 5 Mux", SND_SOC_NOPM, 0, 0,
+ &tas5086_dapm_input_mux_controls[4]),
+ SND_SOC_DAPM_MUX("Channel 6 Mux", SND_SOC_NOPM, 0, 0,
+ &tas5086_dapm_input_mux_controls[5]),
+
+ SND_SOC_DAPM_MUX("PWM1 Mux", SND_SOC_NOPM, 0, 0,
+ &tas5086_dapm_output_mux_controls[0]),
+ SND_SOC_DAPM_MUX("PWM2 Mux", SND_SOC_NOPM, 0, 0,
+ &tas5086_dapm_output_mux_controls[1]),
+ SND_SOC_DAPM_MUX("PWM3 Mux", SND_SOC_NOPM, 0, 0,
+ &tas5086_dapm_output_mux_controls[2]),
+ SND_SOC_DAPM_MUX("PWM4 Mux", SND_SOC_NOPM, 0, 0,
+ &tas5086_dapm_output_mux_controls[3]),
+ SND_SOC_DAPM_MUX("PWM5 Mux", SND_SOC_NOPM, 0, 0,
+ &tas5086_dapm_output_mux_controls[4]),
+ SND_SOC_DAPM_MUX("PWM6 Mux", SND_SOC_NOPM, 0, 0,
+ &tas5086_dapm_output_mux_controls[5]),
+};
+
+static const struct snd_soc_dapm_route tas5086_dapm_routes[] = {
+ /* SDIN inputs -> channel muxes */
+ { "Channel 1 Mux", "SDIN1-L", "SDIN1-L" },
+ { "Channel 1 Mux", "SDIN1-R", "SDIN1-R" },
+ { "Channel 1 Mux", "SDIN2-L", "SDIN2-L" },
+ { "Channel 1 Mux", "SDIN2-R", "SDIN2-R" },
+ { "Channel 1 Mux", "SDIN3-L", "SDIN3-L" },
+ { "Channel 1 Mux", "SDIN3-R", "SDIN3-R" },
+
+ { "Channel 2 Mux", "SDIN1-L", "SDIN1-L" },
+ { "Channel 2 Mux", "SDIN1-R", "SDIN1-R" },
+ { "Channel 2 Mux", "SDIN2-L", "SDIN2-L" },
+ { "Channel 2 Mux", "SDIN2-R", "SDIN2-R" },
+ { "Channel 2 Mux", "SDIN3-L", "SDIN3-L" },
+ { "Channel 2 Mux", "SDIN3-R", "SDIN3-R" },
+
+ { "Channel 2 Mux", "SDIN1-L", "SDIN1-L" },
+ { "Channel 2 Mux", "SDIN1-R", "SDIN1-R" },
+ { "Channel 2 Mux", "SDIN2-L", "SDIN2-L" },
+ { "Channel 2 Mux", "SDIN2-R", "SDIN2-R" },
+ { "Channel 2 Mux", "SDIN3-L", "SDIN3-L" },
+ { "Channel 2 Mux", "SDIN3-R", "SDIN3-R" },
+
+ { "Channel 3 Mux", "SDIN1-L", "SDIN1-L" },
+ { "Channel 3 Mux", "SDIN1-R", "SDIN1-R" },
+ { "Channel 3 Mux", "SDIN2-L", "SDIN2-L" },
+ { "Channel 3 Mux", "SDIN2-R", "SDIN2-R" },
+ { "Channel 3 Mux", "SDIN3-L", "SDIN3-L" },
+ { "Channel 3 Mux", "SDIN3-R", "SDIN3-R" },
+
+ { "Channel 4 Mux", "SDIN1-L", "SDIN1-L" },
+ { "Channel 4 Mux", "SDIN1-R", "SDIN1-R" },
+ { "Channel 4 Mux", "SDIN2-L", "SDIN2-L" },
+ { "Channel 4 Mux", "SDIN2-R", "SDIN2-R" },
+ { "Channel 4 Mux", "SDIN3-L", "SDIN3-L" },
+ { "Channel 4 Mux", "SDIN3-R", "SDIN3-R" },
+
+ { "Channel 5 Mux", "SDIN1-L", "SDIN1-L" },
+ { "Channel 5 Mux", "SDIN1-R", "SDIN1-R" },
+ { "Channel 5 Mux", "SDIN2-L", "SDIN2-L" },
+ { "Channel 5 Mux", "SDIN2-R", "SDIN2-R" },
+ { "Channel 5 Mux", "SDIN3-L", "SDIN3-L" },
+ { "Channel 5 Mux", "SDIN3-R", "SDIN3-R" },
+
+ { "Channel 6 Mux", "SDIN1-L", "SDIN1-L" },
+ { "Channel 6 Mux", "SDIN1-R", "SDIN1-R" },
+ { "Channel 6 Mux", "SDIN2-L", "SDIN2-L" },
+ { "Channel 6 Mux", "SDIN2-R", "SDIN2-R" },
+ { "Channel 6 Mux", "SDIN3-L", "SDIN3-L" },
+ { "Channel 6 Mux", "SDIN3-R", "SDIN3-R" },
+
+ /* Channel muxes -> PWM muxes */
+ { "PWM1 Mux", "Channel 1 Mux", "Channel 1 Mux" },
+ { "PWM2 Mux", "Channel 1 Mux", "Channel 1 Mux" },
+ { "PWM3 Mux", "Channel 1 Mux", "Channel 1 Mux" },
+ { "PWM4 Mux", "Channel 1 Mux", "Channel 1 Mux" },
+ { "PWM5 Mux", "Channel 1 Mux", "Channel 1 Mux" },
+ { "PWM6 Mux", "Channel 1 Mux", "Channel 1 Mux" },
+
+ { "PWM1 Mux", "Channel 2 Mux", "Channel 2 Mux" },
+ { "PWM2 Mux", "Channel 2 Mux", "Channel 2 Mux" },
+ { "PWM3 Mux", "Channel 2 Mux", "Channel 2 Mux" },
+ { "PWM4 Mux", "Channel 2 Mux", "Channel 2 Mux" },
+ { "PWM5 Mux", "Channel 2 Mux", "Channel 2 Mux" },
+ { "PWM6 Mux", "Channel 2 Mux", "Channel 2 Mux" },
+
+ { "PWM1 Mux", "Channel 3 Mux", "Channel 3 Mux" },
+ { "PWM2 Mux", "Channel 3 Mux", "Channel 3 Mux" },
+ { "PWM3 Mux", "Channel 3 Mux", "Channel 3 Mux" },
+ { "PWM4 Mux", "Channel 3 Mux", "Channel 3 Mux" },
+ { "PWM5 Mux", "Channel 3 Mux", "Channel 3 Mux" },
+ { "PWM6 Mux", "Channel 3 Mux", "Channel 3 Mux" },
+
+ { "PWM1 Mux", "Channel 4 Mux", "Channel 4 Mux" },
+ { "PWM2 Mux", "Channel 4 Mux", "Channel 4 Mux" },
+ { "PWM3 Mux", "Channel 4 Mux", "Channel 4 Mux" },
+ { "PWM4 Mux", "Channel 4 Mux", "Channel 4 Mux" },
+ { "PWM5 Mux", "Channel 4 Mux", "Channel 4 Mux" },
+ { "PWM6 Mux", "Channel 4 Mux", "Channel 4 Mux" },
+
+ { "PWM1 Mux", "Channel 5 Mux", "Channel 5 Mux" },
+ { "PWM2 Mux", "Channel 5 Mux", "Channel 5 Mux" },
+ { "PWM3 Mux", "Channel 5 Mux", "Channel 5 Mux" },
+ { "PWM4 Mux", "Channel 5 Mux", "Channel 5 Mux" },
+ { "PWM5 Mux", "Channel 5 Mux", "Channel 5 Mux" },
+ { "PWM6 Mux", "Channel 5 Mux", "Channel 5 Mux" },
+
+ { "PWM1 Mux", "Channel 6 Mux", "Channel 6 Mux" },
+ { "PWM2 Mux", "Channel 6 Mux", "Channel 6 Mux" },
+ { "PWM3 Mux", "Channel 6 Mux", "Channel 6 Mux" },
+ { "PWM4 Mux", "Channel 6 Mux", "Channel 6 Mux" },
+ { "PWM5 Mux", "Channel 6 Mux", "Channel 6 Mux" },
+ { "PWM6 Mux", "Channel 6 Mux", "Channel 6 Mux" },
+
+ /* The PWM muxes are directly connected to the PWM outputs */
+ { "PWM1", NULL, "PWM1 Mux" },
+ { "PWM2", NULL, "PWM2 Mux" },
+ { "PWM3", NULL, "PWM3 Mux" },
+ { "PWM4", NULL, "PWM4 Mux" },
+ { "PWM5", NULL, "PWM5 Mux" },
+ { "PWM6", NULL, "PWM6 Mux" },
+
+};
+
+static const struct snd_soc_dai_ops tas5086_dai_ops = {
+ .hw_params = tas5086_hw_params,
+ .set_sysclk = tas5086_set_dai_sysclk,
+ .set_fmt = tas5086_set_dai_fmt,
+ .mute_stream = tas5086_mute_stream,
+};
+
+static struct snd_soc_dai_driver tas5086_dai = {
+ .name = "tas5086-hifi",
+ .playback = {
+ .stream_name = "Playback",
+ .channels_min = 2,
+ .channels_max = 6,
+ .rates = TAS5086_PCM_RATES,
+ .formats = TAS5086_PCM_FORMATS,
+ },
+ .ops = &tas5086_dai_ops,
+};
+
+#ifdef CONFIG_PM
+static int tas5086_soc_suspend(struct snd_soc_codec *codec)
+{
+ struct tas5086_private *priv = snd_soc_codec_get_drvdata(codec);
+ int ret;
+
+ /* Shut down all channels */
+ ret = regmap_write(priv->regmap, TAS5086_SYS_CONTROL_2, 0x60);
+ if (ret < 0)
+ return ret;
+
+ regulator_bulk_disable(ARRAY_SIZE(priv->supplies), priv->supplies);
+
+ return 0;
+}
+
+static int tas5086_soc_resume(struct snd_soc_codec *codec)
+{
+ struct tas5086_private *priv = snd_soc_codec_get_drvdata(codec);
+ int ret;
+
+ ret = regulator_bulk_enable(ARRAY_SIZE(priv->supplies), priv->supplies);
+ if (ret < 0)
+ return ret;
+
+ tas5086_reset(priv);
+ regcache_mark_dirty(priv->regmap);
+
+ ret = tas5086_init(codec->dev, priv);
+ if (ret < 0)
+ return ret;
+
+ ret = regcache_sync(priv->regmap);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+#else
+#define tas5086_soc_suspend NULL
+#define tas5086_soc_resume NULL
+#endif /* CONFIG_PM */
+
+#ifdef CONFIG_OF
+static const struct of_device_id tas5086_dt_ids[] = {
+ { .compatible = "ti,tas5086", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, tas5086_dt_ids);
+#endif
+
+static int tas5086_probe(struct snd_soc_codec *codec)
+{
+ struct tas5086_private *priv = snd_soc_codec_get_drvdata(codec);
+ int i, ret;
+
+ ret = regulator_bulk_enable(ARRAY_SIZE(priv->supplies), priv->supplies);
+ if (ret < 0) {
+ dev_err(codec->dev, "Failed to enable regulators: %d\n", ret);
+ return ret;
+ }
+
+ priv->pwm_start_mid_z = 0;
+ priv->charge_period = 1300000; /* hardware default is 1300 ms */
+
+ if (of_match_device(of_match_ptr(tas5086_dt_ids), codec->dev)) {
+ struct device_node *of_node = codec->dev->of_node;
+
+ of_property_read_u32(of_node, "ti,charge-period",
+ &priv->charge_period);
+
+ for (i = 0; i < 6; i++) {
+ char name[25];
+
+ snprintf(name, sizeof(name),
+ "ti,mid-z-channel-%d", i + 1);
+
+ if (of_get_property(of_node, name, NULL) != NULL)
+ priv->pwm_start_mid_z |= 1 << i;
+ }
+ }
+
+ tas5086_reset(priv);
+ ret = tas5086_init(codec->dev, priv);
+ if (ret < 0)
+ goto exit_disable_regulators;
+
+ /* set master volume to 0 dB */
+ ret = regmap_write(priv->regmap, TAS5086_MASTER_VOL, 0x30);
+ if (ret < 0)
+ goto exit_disable_regulators;
+
+ return 0;
+
+exit_disable_regulators:
+ regulator_bulk_disable(ARRAY_SIZE(priv->supplies), priv->supplies);
+
+ return ret;
+}
+
+static int tas5086_remove(struct snd_soc_codec *codec)
+{
+ struct tas5086_private *priv = snd_soc_codec_get_drvdata(codec);
+
+ if (gpio_is_valid(priv->gpio_nreset))
+ /* Set codec to the reset state */
+ gpio_set_value(priv->gpio_nreset, 0);
+
+ regulator_bulk_disable(ARRAY_SIZE(priv->supplies), priv->supplies);
+
+ return 0;
+};
+
+static struct snd_soc_codec_driver soc_codec_dev_tas5086 = {
+ .probe = tas5086_probe,
+ .remove = tas5086_remove,
+ .suspend = tas5086_soc_suspend,
+ .resume = tas5086_soc_resume,
+ .controls = tas5086_controls,
+ .num_controls = ARRAY_SIZE(tas5086_controls),
+ .dapm_widgets = tas5086_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(tas5086_dapm_widgets),
+ .dapm_routes = tas5086_dapm_routes,
+ .num_dapm_routes = ARRAY_SIZE(tas5086_dapm_routes),
+};
+
+static const struct i2c_device_id tas5086_i2c_id[] = {
+ { "tas5086", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, tas5086_i2c_id);
+
+static const struct regmap_config tas5086_regmap = {
+ .reg_bits = 8,
+ .val_bits = 32,
+ .max_register = TAS5086_MAX_REGISTER,
+ .reg_defaults = tas5086_reg_defaults,
+ .num_reg_defaults = ARRAY_SIZE(tas5086_reg_defaults),
+ .cache_type = REGCACHE_RBTREE,
+ .volatile_reg = tas5086_volatile_reg,
+ .writeable_reg = tas5086_writeable_reg,
+ .readable_reg = tas5086_accessible_reg,
+ .reg_read = tas5086_reg_read,
+ .reg_write = tas5086_reg_write,
+};
+
+static int tas5086_i2c_probe(struct i2c_client *i2c,
+ const struct i2c_device_id *id)
+{
+ struct tas5086_private *priv;
+ struct device *dev = &i2c->dev;
+ int gpio_nreset = -EINVAL;
+ int i, ret;
+
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ for (i = 0; i < ARRAY_SIZE(supply_names); i++)
+ priv->supplies[i].supply = supply_names[i];
+
+ ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(priv->supplies),
+ priv->supplies);
+ if (ret < 0) {
+ dev_err(dev, "Failed to get regulators: %d\n", ret);
+ return ret;
+ }
+
+ priv->regmap = devm_regmap_init(dev, NULL, i2c, &tas5086_regmap);
+ if (IS_ERR(priv->regmap)) {
+ ret = PTR_ERR(priv->regmap);
+ dev_err(&i2c->dev, "Failed to create regmap: %d\n", ret);
+ return ret;
+ }
+
+ i2c_set_clientdata(i2c, priv);
+
+ if (of_match_device(of_match_ptr(tas5086_dt_ids), dev)) {
+ struct device_node *of_node = dev->of_node;
+ gpio_nreset = of_get_named_gpio(of_node, "reset-gpio", 0);
+ }
+
+ if (gpio_is_valid(gpio_nreset))
+ if (devm_gpio_request(dev, gpio_nreset, "TAS5086 Reset"))
+ gpio_nreset = -EINVAL;
+
+ priv->gpio_nreset = gpio_nreset;
+
+ ret = regulator_bulk_enable(ARRAY_SIZE(priv->supplies), priv->supplies);
+ if (ret < 0) {
+ dev_err(dev, "Failed to enable regulators: %d\n", ret);
+ return ret;
+ }
+
+ tas5086_reset(priv);
+
+ /* The TAS5086 always returns 0x03 in its TAS5086_DEV_ID register */
+ ret = regmap_read(priv->regmap, TAS5086_DEV_ID, &i);
+ if (ret == 0 && i != 0x3) {
+ dev_err(dev,
+ "Failed to identify TAS5086 codec (got %02x)\n", i);
+ ret = -ENODEV;
+ }
+
+ /*
+ * The chip has been identified, so we can turn off the power
+ * again until the dai link is set up.
+ */
+ regulator_bulk_disable(ARRAY_SIZE(priv->supplies), priv->supplies);
+
+ if (ret == 0)
+ ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_tas5086,
+ &tas5086_dai, 1);
+
+ return ret;
+}
+
+static int tas5086_i2c_remove(struct i2c_client *i2c)
+{
+ snd_soc_unregister_codec(&i2c->dev);
+ return 0;
+}
+
+static struct i2c_driver tas5086_i2c_driver = {
+ .driver = {
+ .name = "tas5086",
+ .owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(tas5086_dt_ids),
+ },
+ .id_table = tas5086_i2c_id,
+ .probe = tas5086_i2c_probe,
+ .remove = tas5086_i2c_remove,
+};
+
+module_i2c_driver(tas5086_i2c_driver);
+
+MODULE_AUTHOR("Daniel Mack <zonque@gmail.com>");
+MODULE_DESCRIPTION("Texas Instruments TAS5086 ALSA SoC Codec Driver");
+MODULE_LICENSE("GPL");
Code Review / kvmfornfv.git / blobdiff