diff options
Diffstat (limited to 'kernel/sound/soc/codecs/tas5086.c')
| -rw-r--r-- | kernel/sound/soc/codecs/tas5086.c | 1009 |
1 files changed, 1009 insertions, 0 deletions
diff --git a/kernel/sound/soc/codecs/tas5086.c b/kernel/sound/soc/codecs/tas5086.c new file mode 100644 index 000000000..32942bed3 --- /dev/null +++ b/kernel/sound/soc/codecs/tas5086.c @@ -0,0 +1,1009 @@ +/* + * 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"); |