diff options
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/codecs/Kconfig | 10 | ||||
| -rw-r--r-- | sound/soc/codecs/Makefile | 2 | ||||
| -rw-r--r-- | sound/soc/codecs/tas571x.c | 141 | ||||
| -rw-r--r-- | sound/soc/codecs/tas571x.h | 22 | ||||
| -rw-r--r-- | sound/soc/codecs/tas5720.c | 620 | ||||
| -rw-r--r-- | sound/soc/codecs/tas5720.h | 90 |
6 files changed, 872 insertions, 13 deletions
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig index f22e86e..03242a4 100644 --- a/sound/soc/codecs/Kconfig +++ b/sound/soc/codecs/Kconfig @@ -127,6 +127,7 @@ config SND_SOC_ALL_CODECS select SND_SOC_TAS2552 if I2C select SND_SOC_TAS5086 if I2C select SND_SOC_TAS571X if I2C + select SND_SOC_TAS5720 if I2C select SND_SOC_TFA9879 if I2C select SND_SOC_TLV320AIC23_I2C if I2C select SND_SOC_TLV320AIC23_SPI if SPI_MASTER @@ -753,9 +754,16 @@ config SND_SOC_TAS5086 depends on I2C config SND_SOC_TAS571X - tristate "Texas Instruments TAS5711/TAS5717/TAS5719 power amplifiers" + tristate "Texas Instruments TAS5711/TAS5717/TAS5719/TAS5721 power amplifiers" depends on I2C +config SND_SOC_TAS5720 + tristate "Texas Instruments TAS5720 Mono Audio amplifier" + depends on I2C + help + Enable support for Texas Instruments TAS5720L/M high-efficiency mono + Class-D audio power amplifiers. + config SND_SOC_TFA9879 tristate "NXP Semiconductors TFA9879 amplifier" depends on I2C diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile index a2fdfdc..2620ee0 100644 --- a/sound/soc/codecs/Makefile +++ b/sound/soc/codecs/Makefile @@ -132,6 +132,7 @@ snd-soc-stac9766-objs := stac9766.o snd-soc-sti-sas-objs := sti-sas.o snd-soc-tas5086-objs := tas5086.o snd-soc-tas571x-objs := tas571x.o +snd-soc-tas5720-objs := tas5720.o snd-soc-tfa9879-objs := tfa9879.o snd-soc-tlv320aic23-objs := tlv320aic23.o snd-soc-tlv320aic23-i2c-objs := tlv320aic23-i2c.o @@ -342,6 +343,7 @@ obj-$(CONFIG_SND_SOC_STI_SAS) += snd-soc-sti-sas.o obj-$(CONFIG_SND_SOC_TAS2552) += snd-soc-tas2552.o obj-$(CONFIG_SND_SOC_TAS5086) += snd-soc-tas5086.o obj-$(CONFIG_SND_SOC_TAS571X) += snd-soc-tas571x.o +obj-$(CONFIG_SND_SOC_TAS5720) += snd-soc-tas5720.o obj-$(CONFIG_SND_SOC_TFA9879) += snd-soc-tfa9879.o obj-$(CONFIG_SND_SOC_TLV320AIC23) += snd-soc-tlv320aic23.o obj-$(CONFIG_SND_SOC_TLV320AIC23_I2C) += snd-soc-tlv320aic23-i2c.o diff --git a/sound/soc/codecs/tas571x.c b/sound/soc/codecs/tas571x.c index 39307ad..b8d19b7 100644 --- a/sound/soc/codecs/tas571x.c +++ b/sound/soc/codecs/tas571x.c @@ -4,6 +4,9 @@ * Copyright (C) 2015 Google, Inc. * Copyright (c) 2013 Daniel Mack <zonque@gmail.com> * + * TAS5721 support: + * Copyright (C) 2016 Petr Kulhavy, Barix AG <petr@barix.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 @@ -57,6 +60,10 @@ static int tas571x_register_size(struct tas571x_private *priv, unsigned int reg) case TAS571X_CH1_VOL_REG: case TAS571X_CH2_VOL_REG: return priv->chip->vol_reg_size; + case TAS571X_INPUT_MUX_REG: + case TAS571X_CH4_SRC_SELECT_REG: + case TAS571X_PWM_MUX_REG: + return 4; default: return 1; } @@ -167,6 +174,23 @@ static int tas571x_hw_params(struct snd_pcm_substream *substream, TAS571X_SDI_FMT_MASK, val); } +static int tas571x_mute(struct snd_soc_dai *dai, int mute) +{ + struct snd_soc_codec *codec = dai->codec; + u8 sysctl2; + int ret; + + sysctl2 = mute ? TAS571X_SYS_CTRL_2_SDN_MASK : 0; + + ret = snd_soc_update_bits(codec, + TAS571X_SYS_CTRL_2_REG, + TAS571X_SYS_CTRL_2_SDN_MASK, + sysctl2); + usleep_range(1000, 2000); + + return ret; +} + static int tas571x_set_bias_level(struct snd_soc_codec *codec, enum snd_soc_bias_level level) { @@ -214,6 +238,7 @@ static int tas571x_set_bias_level(struct snd_soc_codec *codec, static const struct snd_soc_dai_ops tas571x_dai_ops = { .set_fmt = tas571x_set_dai_fmt, .hw_params = tas571x_hw_params, + .digital_mute = tas571x_mute, }; static const char *const tas5711_supply_names[] = { @@ -241,6 +266,26 @@ static const struct snd_kcontrol_new tas5711_controls[] = { 1, 1), }; +static const struct regmap_range tas571x_readonly_regs_range[] = { + regmap_reg_range(TAS571X_CLK_CTRL_REG, TAS571X_DEV_ID_REG), +}; + +static const struct regmap_range tas571x_volatile_regs_range[] = { + regmap_reg_range(TAS571X_CLK_CTRL_REG, TAS571X_ERR_STATUS_REG), + regmap_reg_range(TAS571X_OSC_TRIM_REG, TAS571X_OSC_TRIM_REG), +}; + +static const struct regmap_access_table tas571x_write_regs = { + .no_ranges = tas571x_readonly_regs_range, + .n_no_ranges = ARRAY_SIZE(tas571x_readonly_regs_range), +}; + +static const struct regmap_access_table tas571x_volatile_regs = { + .yes_ranges = tas571x_volatile_regs_range, + .n_yes_ranges = ARRAY_SIZE(tas571x_volatile_regs_range), + +}; + static const struct reg_default tas5711_reg_defaults[] = { { 0x04, 0x05 }, { 0x05, 0x40 }, @@ -260,6 +305,8 @@ static const struct regmap_config tas5711_regmap_config = { .reg_defaults = tas5711_reg_defaults, .num_reg_defaults = ARRAY_SIZE(tas5711_reg_defaults), .cache_type = REGCACHE_RBTREE, + .wr_table = &tas571x_write_regs, + .volatile_table = &tas571x_volatile_regs, }; static const struct tas571x_chip tas5711_chip = { @@ -314,6 +361,8 @@ static const struct regmap_config tas5717_regmap_config = { .reg_defaults = tas5717_reg_defaults, .num_reg_defaults = ARRAY_SIZE(tas5717_reg_defaults), .cache_type = REGCACHE_RBTREE, + .wr_table = &tas571x_write_regs, + .volatile_table = &tas571x_volatile_regs, }; /* This entry is reused for tas5719 as the software interface is identical. */ @@ -326,6 +375,77 @@ static const struct tas571x_chip tas5717_chip = { .vol_reg_size = 2, }; +static const char *const tas5721_supply_names[] = { + "AVDD", + "DVDD", + "DRVDD", + "PVDD", +}; + +static const struct snd_kcontrol_new tas5721_controls[] = { + SOC_SINGLE_TLV("Master Volume", + TAS571X_MVOL_REG, + 0, 0xff, 1, tas5711_volume_tlv), + SOC_DOUBLE_R_TLV("Speaker Volume", + TAS571X_CH1_VOL_REG, + TAS571X_CH2_VOL_REG, + 0, 0xff, 1, tas5711_volume_tlv), + SOC_DOUBLE("Speaker Switch", + TAS571X_SOFT_MUTE_REG, + TAS571X_SOFT_MUTE_CH1_SHIFT, TAS571X_SOFT_MUTE_CH2_SHIFT, + 1, 1), +}; + +static const struct reg_default tas5721_reg_defaults[] = { + {TAS571X_CLK_CTRL_REG, 0x6c}, + {TAS571X_DEV_ID_REG, 0x00}, + {TAS571X_ERR_STATUS_REG, 0x00}, + {TAS571X_SYS_CTRL_1_REG, 0xa0}, + {TAS571X_SDI_REG, 0x05}, + {TAS571X_SYS_CTRL_2_REG, 0x40}, + {TAS571X_SOFT_MUTE_REG, 0x00}, + {TAS571X_MVOL_REG, 0xff}, + {TAS571X_CH1_VOL_REG, 0x30}, + {TAS571X_CH2_VOL_REG, 0x30}, + {TAS571X_CH3_VOL_REG, 0x30}, + {TAS571X_VOL_CFG_REG, 0x91}, + {TAS571X_MODULATION_LIMIT_REG, 0x02}, + {TAS571X_IC_DELAY_CH1_REG, 0xac}, + {TAS571X_IC_DELAY_CH2_REG, 0x54}, + {TAS571X_IC_DELAY_CH3_REG, 0xac}, + {TAS571X_IC_DELAY_CH4_REG, 0x54}, + {TAS571X_PWM_CH_SDN_GROUP_REG, 0x30}, + {TAS571X_START_STOP_PERIOD_REG, 0x0f}, + {TAS571X_OSC_TRIM_REG, 0x82}, + {TAS571X_BKND_ERR_REG, 0x02}, + {TAS571X_INPUT_MUX_REG, 0x17772}, + {TAS571X_CH4_SRC_SELECT_REG, 0x4303}, + {TAS571X_PWM_MUX_REG, 0x1021345}, +}; + +static const struct regmap_config tas5721_regmap_config = { + .reg_bits = 8, + .val_bits = 32, + .max_register = 0xff, + .reg_read = tas571x_reg_read, + .reg_write = tas571x_reg_write, + .reg_defaults = tas5721_reg_defaults, + .num_reg_defaults = ARRAY_SIZE(tas5721_reg_defaults), + .cache_type = REGCACHE_RBTREE, + .wr_table = &tas571x_write_regs, + .volatile_table = &tas571x_volatile_regs, +}; + + +static const struct tas571x_chip tas5721_chip = { + .supply_names = tas5721_supply_names, + .num_supply_names = ARRAY_SIZE(tas5721_supply_names), + .controls = tas5711_controls, + .num_controls = ARRAY_SIZE(tas5711_controls), + .regmap_config = &tas5721_regmap_config, + .vol_reg_size = 1, +}; + static const struct snd_soc_dapm_widget tas571x_dapm_widgets[] = { SND_SOC_DAPM_DAC("DACL", NULL, SND_SOC_NOPM, 0, 0), SND_SOC_DAPM_DAC("DACR", NULL, SND_SOC_NOPM, 0, 0), @@ -386,11 +506,10 @@ static int tas571x_i2c_probe(struct i2c_client *client, i2c_set_clientdata(client, priv); of_id = of_match_device(tas571x_of_match, dev); - if (!of_id) { - dev_err(dev, "Unknown device type\n"); - return -EINVAL; - } - priv->chip = of_id->data; + if (of_id) + priv->chip = of_id->data; + else + priv->chip = (void *) id->driver_data; priv->mclk = devm_clk_get(dev, "mclk"); if (IS_ERR(priv->mclk) && PTR_ERR(priv->mclk) != -ENOENT) { @@ -445,10 +564,6 @@ static int tas571x_i2c_probe(struct i2c_client *client, if (ret) return ret; - ret = regmap_update_bits(priv->regmap, TAS571X_SYS_CTRL_2_REG, - TAS571X_SYS_CTRL_2_SDN_MASK, 0); - if (ret) - return ret; memcpy(&priv->codec_driver, &tas571x_codec, sizeof(priv->codec_driver)); priv->codec_driver.controls = priv->chip->controls; @@ -486,14 +601,16 @@ static const struct of_device_id tas571x_of_match[] = { { .compatible = "ti,tas5711", .data = &tas5711_chip, }, { .compatible = "ti,tas5717", .data = &tas5717_chip, }, { .compatible = "ti,tas5719", .data = &tas5717_chip, }, + { .compatible = "ti,tas5721", .data = &tas5721_chip, }, { } }; MODULE_DEVICE_TABLE(of, tas571x_of_match); static const struct i2c_device_id tas571x_i2c_id[] = { - { "tas5711", 0 }, - { "tas5717", 0 }, - { "tas5719", 0 }, + { "tas5711", (kernel_ulong_t) &tas5711_chip }, + { "tas5717", (kernel_ulong_t) &tas5717_chip }, + { "tas5719", (kernel_ulong_t) &tas5717_chip }, + { "tas5721", (kernel_ulong_t) &tas5721_chip }, { } }; MODULE_DEVICE_TABLE(i2c, tas571x_i2c_id); diff --git a/sound/soc/codecs/tas571x.h b/sound/soc/codecs/tas571x.h index 0aee471..cf800c3 100644 --- a/sound/soc/codecs/tas571x.h +++ b/sound/soc/codecs/tas571x.h @@ -13,6 +13,10 @@ #define _TAS571X_H /* device registers */ +#define TAS571X_CLK_CTRL_REG 0x00 +#define TAS571X_DEV_ID_REG 0x01 +#define TAS571X_ERR_STATUS_REG 0x02 +#define TAS571X_SYS_CTRL_1_REG 0x03 #define TAS571X_SDI_REG 0x04 #define TAS571X_SDI_FMT_MASK 0x0f @@ -27,7 +31,25 @@ #define TAS571X_MVOL_REG 0x07 #define TAS571X_CH1_VOL_REG 0x08 #define TAS571X_CH2_VOL_REG 0x09 +#define TAS571X_CH3_VOL_REG 0x0a +#define TAS571X_VOL_CFG_REG 0x0e +#define TAS571X_MODULATION_LIMIT_REG 0x10 +#define TAS571X_IC_DELAY_CH1_REG 0x11 +#define TAS571X_IC_DELAY_CH2_REG 0x12 +#define TAS571X_IC_DELAY_CH3_REG 0x13 +#define TAS571X_IC_DELAY_CH4_REG 0x14 +#define TAS571X_PWM_CH_SDN_GROUP_REG 0x19 /* N/A on TAS5717, TAS5719 */ +#define TAS571X_PWM_CH1_SDN_MASK (1<<0) +#define TAS571X_PWM_CH2_SDN_SHIFT (1<<1) +#define TAS571X_PWM_CH3_SDN_SHIFT (1<<2) +#define TAS571X_PWM_CH4_SDN_SHIFT (1<<3) + +#define TAS571X_START_STOP_PERIOD_REG 0x1a #define TAS571X_OSC_TRIM_REG 0x1b +#define TAS571X_BKND_ERR_REG 0x1c +#define TAS571X_INPUT_MUX_REG 0x20 +#define TAS571X_CH4_SRC_SELECT_REG 0x21 +#define TAS571X_PWM_MUX_REG 0x25 #endif /* _TAS571X_H */ diff --git a/sound/soc/codecs/tas5720.c b/sound/soc/codecs/tas5720.c new file mode 100644 index 0000000..f54fb46 --- /dev/null +++ b/sound/soc/codecs/tas5720.c @@ -0,0 +1,620 @@ +/* + * tas5720.c - ALSA SoC Texas Instruments TAS5720 Mono Audio Amplifier + * + * Copyright (C)2015-2016 Texas Instruments Incorporated - http://www.ti.com + * + * Author: Andreas Dannenberg <dannenberg@ti.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * 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. + */ + +#include <linux/module.h> +#include <linux/errno.h> +#include <linux/device.h> +#include <linux/i2c.h> +#include <linux/pm_runtime.h> +#include <linux/regmap.h> +#include <linux/slab.h> +#include <linux/regulator/consumer.h> +#include <linux/delay.h> + +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/soc.h> +#include <sound/soc-dapm.h> +#include <sound/tlv.h> + +#include "tas5720.h" + +/* Define how often to check (and clear) the fault status register (in ms) */ +#define TAS5720_FAULT_CHECK_INTERVAL 200 + +static const char * const tas5720_supply_names[] = { + "dvdd", /* Digital power supply. Connect to 3.3-V supply. */ + "pvdd", /* Class-D amp and analog power supply (connected). */ +}; + +#define TAS5720_NUM_SUPPLIES ARRAY_SIZE(tas5720_supply_names) + +struct tas5720_data { + struct snd_soc_codec *codec; + struct regmap *regmap; + struct i2c_client *tas5720_client; + struct regulator_bulk_data supplies[TAS5720_NUM_SUPPLIES]; + struct delayed_work fault_check_work; + unsigned int last_fault; +}; + +static int tas5720_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; + unsigned int rate = params_rate(params); + bool ssz_ds; + int ret; + + switch (rate) { + case 44100: + case 48000: + ssz_ds = false; + break; + case 88200: + case 96000: + ssz_ds = true; + break; + default: + dev_err(codec->dev, "unsupported sample rate: %u\n", rate); + return -EINVAL; + } + + ret = snd_soc_update_bits(codec, TAS5720_DIGITAL_CTRL1_REG, + TAS5720_SSZ_DS, ssz_ds); + if (ret < 0) { + dev_err(codec->dev, "error setting sample rate: %d\n", ret); + return ret; + } + + return 0; +} + +static int tas5720_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt) +{ + struct snd_soc_codec *codec = dai->codec; + u8 serial_format; + int ret; + + if ((fmt & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_CBS_CFS) { + dev_vdbg(codec->dev, "DAI Format master is not found\n"); + return -EINVAL; + } + + switch (fmt & (SND_SOC_DAIFMT_FORMAT_MASK | + SND_SOC_DAIFMT_INV_MASK)) { + case (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF): + /* 1st data bit occur one BCLK cycle after the frame sync */ + serial_format = TAS5720_SAIF_I2S; + break; + case (SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_NB_NF): + /* + * Note that although the TAS5720 does not have a dedicated DSP + * mode it doesn't care about the LRCLK duty cycle during TDM + * operation. Therefore we can use the device's I2S mode with + * its delaying of the 1st data bit to receive DSP_A formatted + * data. See device datasheet for additional details. + */ + serial_format = TAS5720_SAIF_I2S; + break; + case (SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF): + /* + * Similar to DSP_A, we can use the fact that the TAS5720 does + * not care about the LRCLK duty cycle during TDM to receive + * DSP_B formatted data in LEFTJ mode (no delaying of the 1st + * data bit). + */ + serial_format = TAS5720_SAIF_LEFTJ; + break; + case (SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_NB_NF): + /* No delay after the frame sync */ + serial_format = TAS5720_SAIF_LEFTJ; + break; + default: + dev_vdbg(codec->dev, "DAI Format is not found\n"); + return -EINVAL; + } + + ret = snd_soc_update_bits(codec, TAS5720_DIGITAL_CTRL1_REG, + TAS5720_SAIF_FORMAT_MASK, + serial_format); + if (ret < 0) { + dev_err(codec->dev, "error setting SAIF format: %d\n", ret); + return ret; + } + + return 0; +} + +static int tas5720_set_dai_tdm_slot(struct snd_soc_dai *dai, + unsigned int tx_mask, unsigned int rx_mask, + int slots, int slot_width) +{ + struct snd_soc_codec *codec = dai->codec; + unsigned int first_slot; + int ret; + + if (!tx_mask) { + dev_err(codec->dev, "tx masks must not be 0\n"); + return -EINVAL; + } + + /* + * Determine the first slot that is being requested. We will only + * use the first slot that is found since the TAS5720 is a mono + * amplifier. + */ + first_slot = __ffs(tx_mask); + + if (first_slot > 7) { + dev_err(codec->dev, "slot selection out of bounds (%u)\n", + first_slot); + return -EINVAL; + } + + /* Enable manual TDM slot selection (instead of I2C ID based) */ + ret = snd_soc_update_bits(codec, TAS5720_DIGITAL_CTRL1_REG, + TAS5720_TDM_CFG_SRC, TAS5720_TDM_CFG_SRC); + if (ret < 0) + goto error_snd_soc_update_bits; + + /* Configure the TDM slot to process audio from */ + ret = snd_soc_update_bits(codec, TAS5720_DIGITAL_CTRL2_REG, + TAS5720_TDM_SLOT_SEL_MASK, first_slot); + if (ret < 0) + goto error_snd_soc_update_bits; + + return 0; + +error_snd_soc_update_bits: + dev_err(codec->dev, "error configuring TDM mode: %d\n", ret); + return ret; +} + +static int tas5720_mute(struct snd_soc_dai *dai, int mute) +{ + struct snd_soc_codec *codec = dai->codec; + int ret; + + ret = snd_soc_update_bits(codec, TAS5720_DIGITAL_CTRL2_REG, + TAS5720_MUTE, mute ? TAS5720_MUTE : 0); + if (ret < 0) { + dev_err(codec->dev, "error (un-)muting device: %d\n", ret); + return ret; + } + + return 0; +} + +static void tas5720_fault_check_work(struct work_struct *work) +{ + struct tas5720_data *tas5720 = container_of(work, struct tas5720_data, + fault_check_work.work); + struct device *dev = tas5720->codec->dev; + unsigned int curr_fault; + int ret; + + ret = regmap_read(tas5720->regmap, TAS5720_FAULT_REG, &curr_fault); + if (ret < 0) { + dev_err(dev, "failed to read FAULT register: %d\n", ret); + goto out; + } + + /* Check/handle all errors except SAIF clock errors */ + curr_fault &= TAS5720_OCE | TAS5720_DCE | TAS5720_OTE; + + /* + * Only flag errors once for a given occurrence. This is needed as + * the TAS5720 will take time clearing the fault condition internally + * during which we don't want to bombard the system with the same + * error message over and over. + */ + if ((curr_fault & TAS5720_OCE) && !(tas5720->last_fault & TAS5720_OCE)) + dev_crit(dev, "experienced an over current hardware fault\n"); + + if ((curr_fault & TAS5720_DCE) && !(tas5720->last_fault & TAS5720_DCE)) + dev_crit(dev, "experienced a DC detection fault\n"); + + if ((curr_fault & TAS5720_OTE) && !(tas5720->last_fault & TAS5720_OTE)) + dev_crit(dev, "experienced an over temperature fault\n"); + + /* Store current fault value so we can detect any changes next time */ + tas5720->last_fault = curr_fault; + + if (!curr_fault) + goto out; + + /* + * Periodically toggle SDZ (shutdown bit) H->L->H to clear any latching + * faults as long as a fault condition persists. Always going through + * the full sequence no matter the first return value to minimizes + * chances for the device to end up in shutdown mode. + */ + ret = regmap_write_bits(tas5720->regmap, TAS5720_POWER_CTRL_REG, + TAS5720_SDZ, 0); + if (ret < 0) + dev_err(dev, "failed to write POWER_CTRL register: %d\n", ret); + + ret = regmap_write_bits(tas5720->regmap, TAS5720_POWER_CTRL_REG, + TAS5720_SDZ, TAS5720_SDZ); + if (ret < 0) + dev_err(dev, "failed to write POWER_CTRL register: %d\n", ret); + +out: + /* Schedule the next fault check at the specified interval */ + schedule_delayed_work(&tas5720->fault_check_work, + msecs_to_jiffies(TAS5720_FAULT_CHECK_INTERVAL)); +} + +static int tas5720_codec_probe(struct snd_soc_codec *codec) +{ + struct tas5720_data *tas5720 = snd_soc_codec_get_drvdata(codec); + unsigned int device_id; + int ret; + + tas5720->codec = codec; + + ret = regulator_bulk_enable(ARRAY_SIZE(tas5720->supplies), + tas5720->supplies); + if (ret != 0) { + dev_err(codec->dev, "failed to enable supplies: %d\n", ret); + return ret; + } + + ret = regmap_read(tas5720->regmap, TAS5720_DEVICE_ID_REG, &device_id); + if (ret < 0) { + dev_err(codec->dev, "failed to read device ID register: %d\n", + ret); + goto probe_fail; + } + + if (device_id != TAS5720_DEVICE_ID) { + dev_err(codec->dev, "wrong device ID. expected: %u read: %u\n", + TAS5720_DEVICE_ID, device_id); + ret = -ENODEV; + goto probe_fail; + } + + /* Set device to mute */ + ret = snd_soc_update_bits(codec, TAS5720_DIGITAL_CTRL2_REG, + TAS5720_MUTE, TAS5720_MUTE); + if (ret < 0) + goto error_snd_soc_update_bits; + + /* + * Enter shutdown mode - our default when not playing audio - to + * minimize current consumption. On the TAS5720 there is no real down + * side doing so as all device registers are preserved and the wakeup + * of the codec is rather quick which we do using a dapm widget. + */ + ret = snd_soc_update_bits(codec, TAS5720_POWER_CTRL_REG, + TAS5720_SDZ, 0); + if (ret < 0) + goto error_snd_soc_update_bits; + + INIT_DELAYED_WORK(&tas5720->fault_check_work, tas5720_fault_check_work); + + return 0; + +error_snd_soc_update_bits: + dev_err(codec->dev, "error configuring device registers: %d\n", ret); + +probe_fail: + regulator_bulk_disable(ARRAY_SIZE(tas5720->supplies), + tas5720->supplies); + return ret; +} + +static int tas5720_codec_remove(struct snd_soc_codec *codec) +{ + struct tas5720_data *tas5720 = snd_soc_codec_get_drvdata(codec); + int ret; + + cancel_delayed_work_sync(&tas5720->fault_check_work); + + ret = regulator_bulk_disable(ARRAY_SIZE(tas5720->supplies), + tas5720->supplies); + if (ret < 0) + dev_err(codec->dev, "failed to disable supplies: %d\n", ret); + + return ret; +}; + +static int tas5720_dac_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm); + struct tas5720_data *tas5720 = snd_soc_codec_get_drvdata(codec); + int ret; + + if (event & SND_SOC_DAPM_POST_PMU) { + /* Take TAS5720 out of shutdown mode */ + ret = snd_soc_update_bits(codec, TAS5720_POWER_CTRL_REG, + TAS5720_SDZ, TAS5720_SDZ); + if (ret < 0) { + dev_err(codec->dev, "error waking codec: %d\n", ret); + return ret; + } + + /* + * Observe codec shutdown-to-active time. The datasheet only + * lists a nominal value however just use-it as-is without + * additional padding to minimize the delay introduced in + * starting to play audio (actually there is other setup done + * by the ASoC framework that will provide additional delays, + * so we should always be safe). + */ + msleep(25); + + /* Turn on TAS5720 periodic fault checking/handling */ + tas5720->last_fault = 0; + schedule_delayed_work(&tas5720->fault_check_work, + msecs_to_jiffies(TAS5720_FAULT_CHECK_INTERVAL)); + } else if (event & SND_SOC_DAPM_PRE_PMD) { + /* Disable TAS5720 periodic fault checking/handling */ + cancel_delayed_work_sync(&tas5720->fault_check_work); + + /* Place TAS5720 in shutdown mode to minimize current draw */ + ret = snd_soc_update_bits(codec, TAS5720_POWER_CTRL_REG, + TAS5720_SDZ, 0); + if (ret < 0) { + dev_err(codec->dev, "error shutting down codec: %d\n", + ret); + return ret; + } + } + + return 0; +} + +#ifdef CONFIG_PM +static int tas5720_suspend(struct snd_soc_codec *codec) +{ + struct tas5720_data *tas5720 = snd_soc_codec_get_drvdata(codec); + int ret; + + regcache_cache_only(tas5720->regmap, true); + regcache_mark_dirty(tas5720->regmap); + + ret = regulator_bulk_disable(ARRAY_SIZE(tas5720->supplies), + tas5720->supplies); + if (ret < 0) + dev_err(codec->dev, "failed to disable supplies: %d\n", ret); + + return ret; +} + +static int tas5720_resume(struct snd_soc_codec *codec) +{ + struct tas5720_data *tas5720 = snd_soc_codec_get_drvdata(codec); + int ret; + + ret = regulator_bulk_enable(ARRAY_SIZE(tas5720->supplies), + tas5720->supplies); + if (ret < 0) { + dev_err(codec->dev, "failed to enable supplies: %d\n", ret); + return ret; + } + + regcache_cache_only(tas5720->regmap, false); + + ret = regcache_sync(tas5720->regmap); + if (ret < 0) { + dev_err(codec->dev, "failed to sync regcache: %d\n", ret); + return ret; + } + + return 0; +} +#else +#define tas5720_suspend NULL +#define tas5720_resume NULL +#endif + +static bool tas5720_is_volatile_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case TAS5720_DEVICE_ID_REG: + case TAS5720_FAULT_REG: + return true; + default: + return false; + } +} + +static const struct regmap_config tas5720_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + + .max_register = TAS5720_MAX_REG, + .cache_type = REGCACHE_RBTREE, + .volatile_reg = tas5720_is_volatile_reg, +}; + +/* + * DAC analog gain. There are four discrete values to select from, ranging + * from 19.2 dB to 26.3dB. + */ +static const DECLARE_TLV_DB_RANGE(dac_analog_tlv, + 0x0, 0x0, TLV_DB_SCALE_ITEM(1920, 0, 0), + 0x1, 0x1, TLV_DB_SCALE_ITEM(2070, 0, 0), + 0x2, 0x2, TLV_DB_SCALE_ITEM(2350, 0, 0), + 0x3, 0x3, TLV_DB_SCALE_ITEM(2630, 0, 0), +); + +/* + * DAC digital volumes. From -103.5 to 24 dB in 0.5 dB steps. Note that + * setting the gain below -100 dB (register value <0x7) is effectively a MUTE + * as per device datasheet. + */ +static DECLARE_TLV_DB_SCALE(dac_tlv, -10350, 50, 0); + +static const struct snd_kcontrol_new tas5720_snd_controls[] = { + SOC_SINGLE_TLV("Speaker Driver Playback Volume", + TAS5720_VOLUME_CTRL_REG, 0, 0xff, 0, dac_tlv), + SOC_SINGLE_TLV("Speaker Driver Analog Gain", TAS5720_ANALOG_CTRL_REG, + TAS5720_ANALOG_GAIN_SHIFT, 3, 0, dac_analog_tlv), +}; + +static const struct snd_soc_dapm_widget tas5720_dapm_widgets[] = { + SND_SOC_DAPM_AIF_IN("DAC IN", "Playback", 0, SND_SOC_NOPM, 0, 0), + SND_SOC_DAPM_DAC_E("DAC", NULL, SND_SOC_NOPM, 0, 0, tas5720_dac_event, + SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), + SND_SOC_DAPM_OUTPUT("OUT") +}; + +static const struct snd_soc_dapm_route tas5720_audio_map[] = { + { "DAC", NULL, "DAC IN" }, + { "OUT", NULL, "DAC" }, +}; + +static struct snd_soc_codec_driver soc_codec_dev_tas5720 = { + .probe = tas5720_codec_probe, + .remove = tas5720_codec_remove, + .suspend = tas5720_suspend, + .resume = tas5720_resume, + + .controls = tas5720_snd_controls, + .num_controls = ARRAY_SIZE(tas5720_snd_controls), + .dapm_widgets = tas5720_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(tas5720_dapm_widgets), + .dapm_routes = tas5720_audio_map, + .num_dapm_routes = ARRAY_SIZE(tas5720_audio_map), +}; + +/* PCM rates supported by the TAS5720 driver */ +#define TAS5720_RATES (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |\ + SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000) + +/* Formats supported by TAS5720 driver */ +#define TAS5720_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S18_3LE |\ + SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE) + +static struct snd_soc_dai_ops tas5720_speaker_dai_ops = { + .hw_params = tas5720_hw_params, + .set_fmt = tas5720_set_dai_fmt, + .set_tdm_slot = tas5720_set_dai_tdm_slot, + .digital_mute = tas5720_mute, +}; + +/* + * TAS5720 DAI structure + * + * Note that were are advertising .playback.channels_max = 2 despite this being + * a mono amplifier. The reason for that is that some serial ports such as TI's + * McASP module have a minimum number of channels (2) that they can output. + * Advertising more channels than we have will allow us to interface with such + * a serial port without really any negative side effects as the TAS5720 will + * simply ignore any extra channel(s) asides from the one channel that is + * configured to be played back. + */ +static struct snd_soc_dai_driver tas5720_dai[] = { + { + .name = "tas5720-amplifier", + .playback = { + .stream_name = "Playback", + .channels_min = 1, + .channels_max = 2, + .rates = TAS5720_RATES, + .formats = TAS5720_FORMATS, + }, + .ops = &tas5720_speaker_dai_ops, + }, +}; + +static int tas5720_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct device *dev = &client->dev; + struct tas5720_data *data; + int ret; + int i; + + data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + data->tas5720_client = client; + data->regmap = devm_regmap_init_i2c(client, &tas5720_regmap_config); + if (IS_ERR(data->regmap)) { + ret = PTR_ERR(data->regmap); + dev_err(dev, "failed to allocate register map: %d\n", ret); + return ret; + } + + for (i = 0; i < ARRAY_SIZE(data->supplies); i++) + data->supplies[i].supply = tas5720_supply_names[i]; + + ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(data->supplies), + data->supplies); + if (ret != 0) { + dev_err(dev, "failed to request supplies: %d\n", ret); + return ret; + } + + dev_set_drvdata(dev, data); + + ret = snd_soc_register_codec(&client->dev, + &soc_codec_dev_tas5720, + tas5720_dai, ARRAY_SIZE(tas5720_dai)); + if (ret < 0) { + dev_err(dev, "failed to register codec: %d\n", ret); + return ret; + } + + return 0; +} + +static int tas5720_remove(struct i2c_client *client) +{ + struct device *dev = &client->dev; + + snd_soc_unregister_codec(dev); + + return 0; +} + +static const struct i2c_device_id tas5720_id[] = { + { "tas5720", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, tas5720_id); + +#if IS_ENABLED(CONFIG_OF) +static const struct of_device_id tas5720_of_match[] = { + { .compatible = "ti,tas5720", }, + { }, +}; +MODULE_DEVICE_TABLE(of, tas5720_of_match); +#endif + +static struct i2c_driver tas5720_i2c_driver = { + .driver = { + .name = "tas5720", + .of_match_table = of_match_ptr(tas5720_of_match), + }, + .probe = tas5720_probe, + .remove = tas5720_remove, + .id_table = tas5720_id, +}; + +module_i2c_driver(tas5720_i2c_driver); + +MODULE_AUTHOR("Andreas Dannenberg <dannenberg@ti.com>"); +MODULE_DESCRIPTION("TAS5720 Audio amplifier driver"); +MODULE_LICENSE("GPL"); diff --git a/sound/soc/codecs/tas5720.h b/sound/soc/codecs/tas5720.h new file mode 100644 index 0000000..3d077c7 --- /dev/null +++ b/sound/soc/codecs/tas5720.h @@ -0,0 +1,90 @@ +/* + * tas5720.h - ALSA SoC Texas Instruments TAS5720 Mono Audio Amplifier + * + * Copyright (C)2015-2016 Texas Instruments Incorporated - http://www.ti.com + * + * Author: Andreas Dannenberg <dannenberg@ti.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * 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. + */ + +#ifndef __TAS5720_H__ +#define __TAS5720_H__ + +/* Register Address Map */ +#define TAS5720_DEVICE_ID_REG 0x00 +#define TAS5720_POWER_CTRL_REG 0x01 +#define TAS5720_DIGITAL_CTRL1_REG 0x02 +#define TAS5720_DIGITAL_CTRL2_REG 0x03 +#define TAS5720_VOLUME_CTRL_REG 0x04 +#define TAS5720_ANALOG_CTRL_REG 0x06 +#define TAS5720_FAULT_REG 0x08 +#define TAS5720_DIGITAL_CLIP2_REG 0x10 +#define TAS5720_DIGITAL_CLIP1_REG 0x11 +#define TAS5720_MAX_REG TAS5720_DIGITAL_CLIP1_REG + +/* TAS5720_DEVICE_ID_REG */ +#define TAS5720_DEVICE_ID 0x01 + +/* TAS5720_POWER_CTRL_REG */ +#define TAS5720_DIG_CLIP_MASK GENMASK(7, 2) +#define TAS5720_SLEEP BIT(1) +#define TAS5720_SDZ BIT(0) + +/* TAS5720_DIGITAL_CTRL1_REG */ +#define TAS5720_HPF_BYPASS BIT(7) +#define TAS5720_TDM_CFG_SRC BIT(6) +#define TAS5720_SSZ_DS BIT(3) +#define TAS5720_SAIF_RIGHTJ_24BIT (0x0) +#define TAS5720_SAIF_RIGHTJ_20BIT (0x1) +#define TAS5720_SAIF_RIGHTJ_18BIT (0x2) +#define TAS5720_SAIF_RIGHTJ_16BIT (0x3) +#define TAS5720_SAIF_I2S (0x4) +#define TAS5720_SAIF_LEFTJ (0x5) +#define TAS5720_SAIF_FORMAT_MASK GENMASK(2, 0) + +/* TAS5720_DIGITAL_CTRL2_REG */ +#define TAS5720_MUTE BIT(4) +#define TAS5720_TDM_SLOT_SEL_MASK GENMASK(2, 0) + +/* TAS5720_ANALOG_CTRL_REG */ +#define TAS5720_PWM_RATE_6_3_FSYNC (0x0 << 4) +#define TAS5720_PWM_RATE_8_4_FSYNC (0x1 << 4) +#define TAS5720_PWM_RATE_10_5_FSYNC (0x2 << 4) +#define TAS5720_PWM_RATE_12_6_FSYNC (0x3 << 4) +#define TAS5720_PWM_RATE_14_7_FSYNC (0x4 << 4) +#define TAS5720_PWM_RATE_16_8_FSYNC (0x5 << 4) +#define TAS5720_PWM_RATE_20_10_FSYNC (0x6 << 4) +#define TAS5720_PWM_RATE_24_12_FSYNC (0x7 << 4) +#define TAS5720_PWM_RATE_MASK GENMASK(6, 4) +#define TAS5720_ANALOG_GAIN_19_2DBV (0x0 << 2) +#define TAS5720_ANALOG_GAIN_20_7DBV (0x1 << 2) +#define TAS5720_ANALOG_GAIN_23_5DBV (0x2 << 2) +#define TAS5720_ANALOG_GAIN_26_3DBV (0x3 << 2) +#define TAS5720_ANALOG_GAIN_MASK GENMASK(3, 2) +#define TAS5720_ANALOG_GAIN_SHIFT (0x2) + +/* TAS5720_FAULT_REG */ +#define TAS5720_OC_THRESH_100PCT (0x0 << 4) +#define TAS5720_OC_THRESH_75PCT (0x1 << 4) +#define TAS5720_OC_THRESH_50PCT (0x2 << 4) +#define TAS5720_OC_THRESH_25PCT (0x3 << 4) +#define TAS5720_OC_THRESH_MASK GENMASK(5, 4) +#define TAS5720_CLKE BIT(3) +#define TAS5720_OCE BIT(2) +#define TAS5720_DCE BIT(1) +#define TAS5720_OTE BIT(0) +#define TAS5720_FAULT_MASK GENMASK(3, 0) + +/* TAS5720_DIGITAL_CLIP1_REG */ +#define TAS5720_CLIP1_MASK GENMASK(7, 2) +#define TAS5720_CLIP1_SHIFT (0x2) + +#endif /* __TAS5720_H__ */ |