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ASoC: tas571x: New driver for TI TAS571x power amplifiers
Introduce a new codec driver for the Texas Instruments TAS5711/TAS5717/TAS5719 power amplifier chips. These chips are typically used to take an I2S digital audio input and drive 10-20W into a pair of speakers. Signed-off-by: Kevin Cernekee <cernekee@chromium.org> Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Kevin Cernekee
Mark Brown
parent
ee5d4df729
commit
3fd6e7d9a1
@ -104,6 +104,7 @@ config SND_SOC_ALL_CODECS
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select SND_SOC_STAC9766 if SND_SOC_AC97_BUS
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select SND_SOC_TAS2552 if I2C
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select SND_SOC_TAS5086 if I2C
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select SND_SOC_TAS571X if I2C
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select SND_SOC_TFA9879 if I2C
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select SND_SOC_TLV320AIC23_I2C if I2C
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select SND_SOC_TLV320AIC23_SPI if SPI_MASTER
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@ -611,6 +612,10 @@ config SND_SOC_TAS5086
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tristate "Texas Instruments TAS5086 speaker amplifier"
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depends on I2C
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config SND_SOC_TAS571X
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tristate "Texas Instruments TAS5711/TAS5717/TAS5719 power amplifiers"
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depends on I2C
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config SND_SOC_TFA9879
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tristate "NXP Semiconductors TFA9879 amplifier"
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depends on I2C
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@ -106,6 +106,7 @@ snd-soc-sta350-objs := sta350.o
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snd-soc-sta529-objs := sta529.o
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snd-soc-stac9766-objs := stac9766.o
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snd-soc-tas5086-objs := tas5086.o
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snd-soc-tas571x-objs := tas571x.o
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snd-soc-tfa9879-objs := tfa9879.o
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snd-soc-tlv320aic23-objs := tlv320aic23.o
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snd-soc-tlv320aic23-i2c-objs := tlv320aic23-i2c.o
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@ -288,6 +289,7 @@ obj-$(CONFIG_SND_SOC_STA529) += snd-soc-sta529.o
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obj-$(CONFIG_SND_SOC_STAC9766) += snd-soc-stac9766.o
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obj-$(CONFIG_SND_SOC_TAS2552) += snd-soc-tas2552.o
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obj-$(CONFIG_SND_SOC_TAS5086) += snd-soc-tas5086.o
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obj-$(CONFIG_SND_SOC_TAS571X) += snd-soc-tas571x.o
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obj-$(CONFIG_SND_SOC_TFA9879) += snd-soc-tfa9879.o
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obj-$(CONFIG_SND_SOC_TLV320AIC23) += snd-soc-tlv320aic23.o
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obj-$(CONFIG_SND_SOC_TLV320AIC23_I2C) += snd-soc-tlv320aic23-i2c.o
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520
sound/soc/codecs/tas571x.c
Normal file
520
sound/soc/codecs/tas571x.c
Normal file
@ -0,0 +1,520 @@
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/*
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* TAS571x amplifier audio driver
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*
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* Copyright (C) 2015 Google, Inc.
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* Copyright (c) 2013 Daniel Mack <zonque@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/clk.h>
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#include <linux/delay.h>
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#include <linux/device.h>
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#include <linux/gpio/consumer.h>
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#include <linux/i2c.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/of_device.h>
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#include <linux/regmap.h>
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#include <linux/regulator/consumer.h>
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#include <linux/stddef.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include <sound/tlv.h>
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#include "tas571x.h"
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#define TAS571X_MAX_SUPPLIES 6
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struct tas571x_chip {
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const char *const *supply_names;
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int num_supply_names;
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const struct snd_kcontrol_new *controls;
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int num_controls;
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const struct regmap_config *regmap_config;
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int vol_reg_size;
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};
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struct tas571x_private {
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const struct tas571x_chip *chip;
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struct regmap *regmap;
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struct regulator_bulk_data supplies[TAS571X_MAX_SUPPLIES];
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struct clk *mclk;
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unsigned int format;
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struct gpio_desc *reset_gpio;
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struct gpio_desc *pdn_gpio;
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struct snd_soc_codec_driver codec_driver;
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};
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static int tas571x_register_size(struct tas571x_private *priv, unsigned int reg)
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{
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switch (reg) {
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case TAS571X_MVOL_REG:
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case TAS571X_CH1_VOL_REG:
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case TAS571X_CH2_VOL_REG:
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return priv->chip->vol_reg_size;
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default:
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return 1;
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}
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}
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static int tas571x_reg_write(void *context, unsigned int reg,
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unsigned int value)
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{
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struct i2c_client *client = context;
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struct tas571x_private *priv = i2c_get_clientdata(client);
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unsigned int i, size;
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uint8_t buf[5];
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int ret;
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size = tas571x_register_size(priv, reg);
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buf[0] = reg;
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for (i = size; i >= 1; --i) {
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buf[i] = value;
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value >>= 8;
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}
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ret = i2c_master_send(client, buf, size + 1);
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if (ret == size + 1)
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return 0;
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else if (ret < 0)
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return ret;
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else
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return -EIO;
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}
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static int tas571x_reg_read(void *context, unsigned int reg,
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unsigned int *value)
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{
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struct i2c_client *client = context;
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struct tas571x_private *priv = i2c_get_clientdata(client);
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uint8_t send_buf, recv_buf[4];
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struct i2c_msg msgs[2];
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unsigned int size;
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unsigned int i;
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int ret;
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size = tas571x_register_size(priv, reg);
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send_buf = reg;
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msgs[0].addr = client->addr;
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msgs[0].len = sizeof(send_buf);
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msgs[0].buf = &send_buf;
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msgs[0].flags = 0;
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msgs[1].addr = client->addr;
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msgs[1].len = size;
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msgs[1].buf = recv_buf;
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msgs[1].flags = I2C_M_RD;
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ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
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if (ret < 0)
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return ret;
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else if (ret != ARRAY_SIZE(msgs))
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return -EIO;
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*value = 0;
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for (i = 0; i < size; i++) {
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*value <<= 8;
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*value |= recv_buf[i];
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}
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return 0;
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}
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static int tas571x_set_dai_fmt(struct snd_soc_dai *dai, unsigned int format)
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{
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struct tas571x_private *priv = snd_soc_codec_get_drvdata(dai->codec);
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priv->format = format;
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return 0;
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}
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static int tas571x_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params,
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struct snd_soc_dai *dai)
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{
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struct tas571x_private *priv = snd_soc_codec_get_drvdata(dai->codec);
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u32 val;
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switch (priv->format & SND_SOC_DAIFMT_FORMAT_MASK) {
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case SND_SOC_DAIFMT_RIGHT_J:
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val = 0x00;
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break;
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case SND_SOC_DAIFMT_I2S:
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val = 0x03;
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break;
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case SND_SOC_DAIFMT_LEFT_J:
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val = 0x06;
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break;
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default:
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return -EINVAL;
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}
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if (params_width(params) >= 24)
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val += 2;
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else if (params_width(params) >= 20)
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val += 1;
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return regmap_update_bits(priv->regmap, TAS571X_SDI_REG,
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TAS571X_SDI_FMT_MASK, val);
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}
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static int tas571x_set_bias_level(struct snd_soc_codec *codec,
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enum snd_soc_bias_level level)
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{
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struct tas571x_private *priv = snd_soc_codec_get_drvdata(codec);
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int ret;
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switch (level) {
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case SND_SOC_BIAS_ON:
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break;
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case SND_SOC_BIAS_PREPARE:
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break;
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case SND_SOC_BIAS_STANDBY:
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if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
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if (!IS_ERR(priv->mclk)) {
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ret = clk_prepare_enable(priv->mclk);
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if (ret) {
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dev_err(codec->dev,
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"Failed to enable master clock: %d\n",
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ret);
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return ret;
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}
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}
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gpiod_set_value(priv->pdn_gpio, 0);
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usleep_range(5000, 6000);
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regcache_cache_only(priv->regmap, false);
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ret = regcache_sync(priv->regmap);
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if (ret)
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return ret;
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}
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break;
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case SND_SOC_BIAS_OFF:
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regcache_cache_only(priv->regmap, true);
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gpiod_set_value(priv->pdn_gpio, 1);
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if (!IS_ERR(priv->mclk))
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clk_disable_unprepare(priv->mclk);
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break;
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}
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codec->dapm.bias_level = level;
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return 0;
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}
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static const struct snd_soc_dai_ops tas571x_dai_ops = {
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.set_fmt = tas571x_set_dai_fmt,
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.hw_params = tas571x_hw_params,
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};
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static const char *const tas5711_supply_names[] = {
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"AVDD",
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"DVDD",
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"PVDD_A",
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"PVDD_B",
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"PVDD_C",
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"PVDD_D",
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};
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static const DECLARE_TLV_DB_SCALE(tas5711_volume_tlv, -10350, 50, 1);
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static const struct snd_kcontrol_new tas5711_controls[] = {
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SOC_SINGLE_TLV("Master Volume",
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TAS571X_MVOL_REG,
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0, 0xff, 1, tas5711_volume_tlv),
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SOC_DOUBLE_R_TLV("Speaker Volume",
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TAS571X_CH1_VOL_REG,
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TAS571X_CH2_VOL_REG,
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0, 0xff, 1, tas5711_volume_tlv),
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SOC_DOUBLE("Speaker Switch",
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TAS571X_SOFT_MUTE_REG,
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TAS571X_SOFT_MUTE_CH1_SHIFT, TAS571X_SOFT_MUTE_CH2_SHIFT,
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1, 1),
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};
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static const struct reg_default tas5711_reg_defaults[] = {
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{ 0x04, 0x05 },
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{ 0x05, 0x40 },
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{ 0x06, 0x00 },
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{ 0x07, 0xff },
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{ 0x08, 0x30 },
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{ 0x09, 0x30 },
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{ 0x1b, 0x82 },
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};
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static const struct regmap_config tas5711_regmap_config = {
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.reg_bits = 8,
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.val_bits = 32,
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.max_register = 0xff,
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.reg_read = tas571x_reg_read,
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.reg_write = tas571x_reg_write,
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.reg_defaults = tas5711_reg_defaults,
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.num_reg_defaults = ARRAY_SIZE(tas5711_reg_defaults),
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.cache_type = REGCACHE_RBTREE,
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};
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static const struct tas571x_chip tas5711_chip = {
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.supply_names = tas5711_supply_names,
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.num_supply_names = ARRAY_SIZE(tas5711_supply_names),
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.controls = tas5711_controls,
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.num_controls = ARRAY_SIZE(tas5711_controls),
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.regmap_config = &tas5711_regmap_config,
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.vol_reg_size = 1,
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};
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static const char *const tas5717_supply_names[] = {
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"AVDD",
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"DVDD",
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"HPVDD",
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"PVDD_AB",
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"PVDD_CD",
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};
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static const DECLARE_TLV_DB_SCALE(tas5717_volume_tlv, -10375, 25, 0);
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static const struct snd_kcontrol_new tas5717_controls[] = {
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/* MVOL LSB is ignored - see comments in tas571x_i2c_probe() */
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SOC_SINGLE_TLV("Master Volume",
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TAS571X_MVOL_REG, 1, 0x1ff, 1,
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tas5717_volume_tlv),
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SOC_DOUBLE_R_TLV("Speaker Volume",
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TAS571X_CH1_VOL_REG, TAS571X_CH2_VOL_REG,
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1, 0x1ff, 1, tas5717_volume_tlv),
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SOC_DOUBLE("Speaker Switch",
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TAS571X_SOFT_MUTE_REG,
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TAS571X_SOFT_MUTE_CH1_SHIFT, TAS571X_SOFT_MUTE_CH2_SHIFT,
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1, 1),
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};
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static const struct reg_default tas5717_reg_defaults[] = {
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{ 0x04, 0x05 },
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{ 0x05, 0x40 },
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{ 0x06, 0x00 },
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{ 0x07, 0x03ff },
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{ 0x08, 0x00c0 },
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{ 0x09, 0x00c0 },
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{ 0x1b, 0x82 },
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};
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static const struct regmap_config tas5717_regmap_config = {
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.reg_bits = 8,
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.val_bits = 32,
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.max_register = 0xff,
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.reg_read = tas571x_reg_read,
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.reg_write = tas571x_reg_write,
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.reg_defaults = tas5717_reg_defaults,
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.num_reg_defaults = ARRAY_SIZE(tas5717_reg_defaults),
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.cache_type = REGCACHE_RBTREE,
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};
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/* This entry is reused for tas5719 as the software interface is identical. */
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static const struct tas571x_chip tas5717_chip = {
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.supply_names = tas5717_supply_names,
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.num_supply_names = ARRAY_SIZE(tas5717_supply_names),
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.controls = tas5717_controls,
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.num_controls = ARRAY_SIZE(tas5717_controls),
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.regmap_config = &tas5717_regmap_config,
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.vol_reg_size = 2,
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};
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static const struct snd_soc_dapm_widget tas571x_dapm_widgets[] = {
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SND_SOC_DAPM_DAC("DACL", NULL, SND_SOC_NOPM, 0, 0),
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SND_SOC_DAPM_DAC("DACR", NULL, SND_SOC_NOPM, 0, 0),
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SND_SOC_DAPM_OUTPUT("OUT_A"),
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SND_SOC_DAPM_OUTPUT("OUT_B"),
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SND_SOC_DAPM_OUTPUT("OUT_C"),
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SND_SOC_DAPM_OUTPUT("OUT_D"),
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};
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static const struct snd_soc_dapm_route tas571x_dapm_routes[] = {
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{ "DACL", NULL, "Playback" },
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{ "DACR", NULL, "Playback" },
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{ "OUT_A", NULL, "DACL" },
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{ "OUT_B", NULL, "DACL" },
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{ "OUT_C", NULL, "DACR" },
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{ "OUT_D", NULL, "DACR" },
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};
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static const struct snd_soc_codec_driver tas571x_codec = {
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.set_bias_level = tas571x_set_bias_level,
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.idle_bias_off = true,
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.dapm_widgets = tas571x_dapm_widgets,
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.num_dapm_widgets = ARRAY_SIZE(tas571x_dapm_widgets),
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.dapm_routes = tas571x_dapm_routes,
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.num_dapm_routes = ARRAY_SIZE(tas571x_dapm_routes),
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};
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static struct snd_soc_dai_driver tas571x_dai = {
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.name = "tas571x-hifi",
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.playback = {
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.stream_name = "Playback",
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.channels_min = 2,
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.channels_max = 2,
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.rates = SNDRV_PCM_RATE_8000_48000,
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.formats = SNDRV_PCM_FMTBIT_S32_LE |
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SNDRV_PCM_FMTBIT_S24_LE |
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SNDRV_PCM_FMTBIT_S16_LE,
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},
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.ops = &tas571x_dai_ops,
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};
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static const struct of_device_id tas571x_of_match[];
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static int tas571x_i2c_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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struct tas571x_private *priv;
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struct device *dev = &client->dev;
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int i, ret;
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priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
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if (!priv)
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return -ENOMEM;
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i2c_set_clientdata(client, priv);
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if (dev->of_node) {
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const struct of_device_id *of_id;
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of_id = of_match_device(tas571x_of_match, dev);
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if (of_id)
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priv->chip = of_id->data;
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}
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|
||||
if (!priv->chip) {
|
||||
dev_err(dev, "Unknown device type\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
priv->mclk = devm_clk_get(dev, "mclk");
|
||||
if (IS_ERR(priv->mclk) && PTR_ERR(priv->mclk) != -ENOENT) {
|
||||
dev_err(dev, "Failed to request mclk: %ld\n",
|
||||
PTR_ERR(priv->mclk));
|
||||
return PTR_ERR(priv->mclk);
|
||||
}
|
||||
|
||||
BUG_ON(priv->chip->num_supply_names > TAS571X_MAX_SUPPLIES);
|
||||
for (i = 0; i < priv->chip->num_supply_names; i++)
|
||||
priv->supplies[i].supply = priv->chip->supply_names[i];
|
||||
|
||||
ret = devm_regulator_bulk_get(dev, priv->chip->num_supply_names,
|
||||
priv->supplies);
|
||||
if (ret) {
|
||||
dev_err(dev, "Failed to get supplies: %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
ret = regulator_bulk_enable(priv->chip->num_supply_names,
|
||||
priv->supplies);
|
||||
if (ret) {
|
||||
dev_err(dev, "Failed to enable supplies: %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
priv->regmap = devm_regmap_init(dev, NULL, client,
|
||||
priv->chip->regmap_config);
|
||||
if (IS_ERR(priv->regmap))
|
||||
return PTR_ERR(priv->regmap);
|
||||
|
||||
priv->pdn_gpio = devm_gpiod_get_optional(dev, "pdn", GPIOD_OUT_LOW);
|
||||
if (IS_ERR(priv->pdn_gpio)) {
|
||||
dev_err(dev, "error requesting pdn_gpio: %ld\n",
|
||||
PTR_ERR(priv->pdn_gpio));
|
||||
return PTR_ERR(priv->pdn_gpio);
|
||||
}
|
||||
|
||||
priv->reset_gpio = devm_gpiod_get_optional(dev, "reset",
|
||||
GPIOD_OUT_HIGH);
|
||||
if (IS_ERR(priv->reset_gpio)) {
|
||||
dev_err(dev, "error requesting reset_gpio: %ld\n",
|
||||
PTR_ERR(priv->reset_gpio));
|
||||
return PTR_ERR(priv->reset_gpio);
|
||||
} else if (priv->reset_gpio) {
|
||||
/* pulse the active low reset line for ~100us */
|
||||
usleep_range(100, 200);
|
||||
gpiod_set_value(priv->reset_gpio, 0);
|
||||
usleep_range(12000, 20000);
|
||||
}
|
||||
|
||||
ret = regmap_write(priv->regmap, TAS571X_OSC_TRIM_REG, 0);
|
||||
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;
|
||||
priv->codec_driver.num_controls = priv->chip->num_controls;
|
||||
|
||||
if (priv->chip->vol_reg_size == 2) {
|
||||
/*
|
||||
* The master volume defaults to 0x3ff (mute), but we ignore
|
||||
* (zero) the LSB because the hardware step size is 0.125 dB
|
||||
* and TLV_DB_SCALE_ITEM has a resolution of 0.01 dB.
|
||||
*/
|
||||
ret = regmap_update_bits(priv->regmap, TAS571X_MVOL_REG, 1, 0);
|
||||
if (ret)
|
||||
return ret;
|
||||
}
|
||||
|
||||
regcache_cache_only(priv->regmap, true);
|
||||
gpiod_set_value(priv->pdn_gpio, 1);
|
||||
|
||||
return snd_soc_register_codec(&client->dev, &priv->codec_driver,
|
||||
&tas571x_dai, 1);
|
||||
}
|
||||
|
||||
static int tas571x_i2c_remove(struct i2c_client *client)
|
||||
{
|
||||
struct tas571x_private *priv = i2c_get_clientdata(client);
|
||||
|
||||
snd_soc_unregister_codec(&client->dev);
|
||||
regulator_bulk_disable(priv->chip->num_supply_names, priv->supplies);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
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, },
|
||||
{ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, tas571x_of_match);
|
||||
|
||||
static const struct i2c_device_id tas571x_i2c_id[] = {
|
||||
{ "tas5711", 0 },
|
||||
{ "tas5717", 0 },
|
||||
{ "tas5719", 0 },
|
||||
{ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(i2c, tas571x_i2c_id);
|
||||
|
||||
static struct i2c_driver tas571x_i2c_driver = {
|
||||
.driver = {
|
||||
.name = "tas571x",
|
||||
.of_match_table = of_match_ptr(tas571x_of_match),
|
||||
},
|
||||
.probe = tas571x_i2c_probe,
|
||||
.remove = tas571x_i2c_remove,
|
||||
.id_table = tas571x_i2c_id,
|
||||
};
|
||||
module_i2c_driver(tas571x_i2c_driver);
|
||||
|
||||
MODULE_DESCRIPTION("ASoC TAS571x driver");
|
||||
MODULE_AUTHOR("Kevin Cernekee <cernekee@chromium.org>");
|
||||
MODULE_LICENSE("GPL");
|
||||
33
sound/soc/codecs/tas571x.h
Normal file
33
sound/soc/codecs/tas571x.h
Normal file
@ -0,0 +1,33 @@
|
||||
/*
|
||||
* TAS571x amplifier audio driver
|
||||
*
|
||||
* Copyright (C) 2015 Google, Inc.
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#ifndef _TAS571X_H
|
||||
#define _TAS571X_H
|
||||
|
||||
/* device registers */
|
||||
#define TAS571X_SDI_REG 0x04
|
||||
#define TAS571X_SDI_FMT_MASK 0x0f
|
||||
|
||||
#define TAS571X_SYS_CTRL_2_REG 0x05
|
||||
#define TAS571X_SYS_CTRL_2_SDN_MASK 0x40
|
||||
|
||||
#define TAS571X_SOFT_MUTE_REG 0x06
|
||||
#define TAS571X_SOFT_MUTE_CH1_SHIFT 0
|
||||
#define TAS571X_SOFT_MUTE_CH2_SHIFT 1
|
||||
#define TAS571X_SOFT_MUTE_CH3_SHIFT 2
|
||||
|
||||
#define TAS571X_MVOL_REG 0x07
|
||||
#define TAS571X_CH1_VOL_REG 0x08
|
||||
#define TAS571X_CH2_VOL_REG 0x09
|
||||
|
||||
#define TAS571X_OSC_TRIM_REG 0x1b
|
||||
|
||||
#endif /* _TAS571X_H */
|
||||
Loading…
Reference in New Issue
Block a user