/*
* tas2552.c - ALSA SoC Texas Instruments TAS2552 Mono Audio Amplifier
*
* Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com
*
* Author: Dan Murphy <dmurphy@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/gpio.h>
#include <linux/of_gpio.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#include <linux/gpio/consumer.h>
#include <linux/regulator/consumer.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/tlv.h>
#include <sound/tas2552-plat.h>
#include <dt-bindings/sound/tas2552.h>
#include "tas2552.h"
static const struct reg_default tas2552_reg_defs[] = {
{TAS2552_CFG_1, 0x22},
{TAS2552_CFG_3, 0x80},
{TAS2552_DOUT, 0x00},
{TAS2552_OUTPUT_DATA, 0xc0},
{TAS2552_PDM_CFG, 0x01},
{TAS2552_PGA_GAIN, 0x00},
{TAS2552_BOOST_APT_CTRL, 0x0f},
{TAS2552_RESERVED_0D, 0xbe},
{TAS2552_LIMIT_RATE_HYS, 0x08},
{TAS2552_CFG_2, 0xef},
{TAS2552_SER_CTRL_1, 0x00},
{TAS2552_SER_CTRL_2, 0x00},
{TAS2552_PLL_CTRL_1, 0x10},
{TAS2552_PLL_CTRL_2, 0x00},
{TAS2552_PLL_CTRL_3, 0x00},
{TAS2552_BTIP, 0x8f},
{TAS2552_BTS_CTRL, 0x80},
{TAS2552_LIMIT_RELEASE, 0x04},
{TAS2552_LIMIT_INT_COUNT, 0x00},
{TAS2552_EDGE_RATE_CTRL, 0x40},
{TAS2552_VBAT_DATA, 0x00},
};
#define TAS2552_NUM_SUPPLIES 3
static const char *tas2552_supply_names[TAS2552_NUM_SUPPLIES] = {
"vbat", /* vbat voltage */
"iovdd", /* I/O Voltage */
"avdd", /* Analog DAC Voltage */
};
struct tas2552_data {
struct snd_soc_codec *codec;
struct regmap *regmap;
struct i2c_client *tas2552_client;
struct regulator_bulk_data supplies[TAS2552_NUM_SUPPLIES];
struct gpio_desc *enable_gpio;
unsigned char regs[TAS2552_VBAT_DATA];
unsigned int pll_clkin;
int pll_clk_id;
unsigned int pdm_clk;
int pdm_clk_id;
unsigned int dai_fmt;
unsigned int tdm_delay;
};
static int tas2552_post_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);
switch (event) {
case SND_SOC_DAPM_POST_PMU:
snd_soc_write(codec, TAS2552_RESERVED_0D, 0xc0);
snd_soc_update_bits(codec, TAS2552_LIMIT_RATE_HYS, (1 << 5),
(1 << 5));
snd_soc_update_bits(codec, TAS2552_CFG_2, 1, 0);
snd_soc_update_bits(codec, TAS2552_CFG_1, TAS2552_SWS, 0);
break;
case SND_SOC_DAPM_POST_PMD:
snd_soc_update_bits(codec, TAS2552_CFG_1, TAS2552_SWS,
TAS2552_SWS);
snd_soc_update_bits(codec, TAS2552_CFG_2, 1, 1);
snd_soc_update_bits(codec, TAS2552_LIMIT_RATE_HYS, (1 << 5), 0);
snd_soc_write(codec, TAS2552_RESERVED_0D, 0xbe);
break;
}
return 0;
}
/* Input mux controls */
static const char * const tas2552_input_texts[] = {
"Digital", "Analog" };
static SOC_ENUM_SINGLE_DECL(tas2552_input_mux_enum, TAS2552_CFG_3, 7,
tas2552_input_texts);
static const struct snd_kcontrol_new tas2552_input_mux_control =
SOC_DAPM_ENUM("Route", tas2552_input_mux_enum);
static const struct snd_soc_dapm_widget tas2552_dapm_widgets[] =
{
SND_SOC_DAPM_INPUT("IN"),
/* MUX Controls */
SND_SOC_DAPM_MUX("Input selection", SND_SOC_NOPM, 0, 0,
&tas2552_input_mux_control),
SND_SOC_DAPM_AIF_IN("DAC IN", "DAC Playback", 0, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_DAC("DAC", NULL, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_OUT_DRV("ClassD", TAS2552_CFG_2, 7, 0, NULL, 0),
SND_SOC_DAPM_SUPPLY("PLL", TAS2552_CFG_2, 3, 0, NULL, 0),
SND_SOC_DAPM_POST("Post Event", tas2552_post_event),
SND_SOC_DAPM_OUTPUT("OUT")
};
static const struct snd_soc_dapm_route tas2552_audio_map[] = {
{"DAC", NULL, "DAC IN"},
{"Input selection", "Digital", "DAC"},
{"Input selection", "Analog", "IN"},
{"ClassD", NULL, "Input selection"},
{"OUT", NULL, "ClassD"},
{"ClassD", NULL, "PLL"},
};
#ifdef [31mCONFIG_PM[0m
static void tas2552_sw_shutdown(struct tas2552_data *tas2552, int sw_shutdown)
{
u8 cfg1_reg = 0;
if (!tas2552->codec)
return;
if (sw_shutdown)
cfg1_reg = TAS2552_SWS;
snd_soc_update_bits(tas2552->codec, TAS2552_CFG_1, TAS2552_SWS,
cfg1_reg);
}
#endif
static int tas2552_setup_pll(struct snd_soc_codec *codec,
struct snd_pcm_hw_params *params)
{
struct tas2552_data *tas2552 = dev_get_drvdata(codec->dev);
bool bypass_pll = false;
unsigned int pll_clk = params_rate(params) * 512;
unsigned int pll_clkin = tas2552->pll_clkin;
u8 pll_enable;
if (!pll_clkin) {
if (tas2552->pll_clk_id != TAS2552_PLL_CLKIN_BCLK)
return -EINVAL;
pll_clkin = snd_soc_params_to_bclk(params);
pll_clkin += tas2552->tdm_delay;
}
pll_enable = snd_soc_read(codec, TAS2552_CFG_2) & TAS2552_PLL_ENABLE;
snd_soc_update_bits(codec, TAS2552_CFG_2, TAS2552_PLL_ENABLE, 0);
if (pll_clkin == pll_clk)
bypass_pll = true;
if (bypass_pll) {
/* By pass the PLL configuration */
snd_soc_update_bits(codec, TAS2552_PLL_CTRL_2,
TAS2552_PLL_BYPASS, TAS2552_PLL_BYPASS);
} else {
/* Fill in the PLL control registers for J & D
* pll_clk = (.5 * pll_clkin * J.D) / 2^p
* Need to fill in J and D here based on incoming freq
*/
unsigned int d;
u8 j;
u8 pll_sel = (tas2552->pll_clk_id << 3) & TAS2552_PLL_SRC_MASK;
u8 p = snd_soc_read(codec, TAS2552_PLL_CTRL_1);
p = (p >> 7);
recalc:
j = (pll_clk * 2 * (1 << p)) / pll_clkin;
d = (pll_clk * 2 * (1 << p)) % pll_clkin;
d /= (pll_clkin / 10000);
if (d && (pll_clkin < 512000 || pll_clkin > 9200000)) {
if (tas2552->pll_clk_id == TAS2552_PLL_CLKIN_BCLK) {
pll_clkin = 1800000;
pll_sel = (TAS2552_PLL_CLKIN_1_8_FIXED << 3) &
TAS2552_PLL_SRC_MASK;
} else {
pll_clkin = snd_soc_params_to_bclk(params);
pll_clkin += tas2552->tdm_delay;
pll_sel = (TAS2552_PLL_CLKIN_BCLK << 3) &
TAS2552_PLL_SRC_MASK;
}
goto recalc;
}
snd_soc_update_bits(codec, TAS2552_CFG_1, TAS2552_PLL_SRC_MASK,
pll_sel);
snd_soc_update_bits(codec, TAS2552_PLL_CTRL_1,
TAS2552_PLL_J_MASK, j);
/* Will clear the PLL_BYPASS bit */
snd_soc_write(codec, TAS2552_PLL_CTRL_2,
TAS2552_PLL_D_UPPER(d));
snd_soc_write(codec, TAS2552_PLL_CTRL_3,
TAS2552_PLL_D_LOWER(d));
}
/* Restore PLL status */
snd_soc_update_bits(codec, TAS2552_CFG_2, TAS2552_PLL_ENABLE,
pll_enable);
return 0;
}
static int tas2552_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 tas2552_data *tas2552 = dev_get_drvdata(codec->dev);
int cpf;
u8 ser_ctrl1_reg, wclk_rate;
switch (params_width(params)) {
case 16:
ser_ctrl1_reg = TAS2552_WORDLENGTH_16BIT;
cpf = 32 + tas2552->tdm_delay;
break;
case 20:
ser_ctrl1_reg = TAS2552_WORDLENGTH_20BIT;
cpf = 64 + tas2552->tdm_delay;
break;
case 24:
ser_ctrl1_reg = TAS2552_WORDLENGTH_24BIT;
cpf = 64 + tas2552->tdm_delay;
break;
case 32:
ser_ctrl1_reg = TAS2552_WORDLENGTH_32BIT;
cpf = 64 + tas2552->tdm_delay;
break;
default:
dev_err(codec->dev, "Not supported sample size: %d\n",
params_width(params));
return -EINVAL;
}
if (cpf <= 32)
ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_32;
else if (cpf <= 64)
ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_64;
else if (cpf <= 128)
ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_128;
else
ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_256;
snd_soc_update_bits(codec, TAS2552_SER_CTRL_1,
TAS2552_WORDLENGTH_MASK | TAS2552_CLKSPERFRAME_MASK,
ser_ctrl1_reg);
switch (params_rate(params)) {
case 8000:
wclk_rate = TAS2552_WCLK_FREQ_8KHZ;
break;
case 11025:
case 12000:
wclk_rate = TAS2552_WCLK_FREQ_11_12KHZ;
break;
case 16000:
wclk_rate = TAS2552_WCLK_FREQ_16KHZ;
break;
case 22050:
case 24000:
wclk_rate = TAS2552_WCLK_FREQ_22_24KHZ;
break;
case 32000:
wclk_rate = TAS2552_WCLK_FREQ_32KHZ;
break;
case 44100:
case 48000:
wclk_rate = TAS2552_WCLK_FREQ_44_48KHZ;
break;
case 88200:
case 96000:
wclk_rate = TAS2552_WCLK_FREQ_88_96KHZ;
break;
case 176400:
case 192000:
wclk_rate = TAS2552_WCLK_FREQ_176_192KHZ;
break;
default:
dev_err(codec->dev, "Not supported sample rate: %d\n",
params_rate(params));
return -EINVAL;
}
snd_soc_update_bits(codec, TAS2552_CFG_3, TAS2552_WCLK_FREQ_MASK,
wclk_rate);
return tas2552_setup_pll(codec, params);
}
#define TAS2552_DAI_FMT_MASK (TAS2552_BCLKDIR | \
TAS2552_WCLKDIR | \
TAS2552_DATAFORMAT_MASK)
static int tas2552_prepare(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_soc_codec *codec = dai->codec;
struct tas2552_data *tas2552 = snd_soc_codec_get_drvdata(codec);
int delay = 0;
/* TDM slot selection only valid in DSP_A/_B mode */
if (tas2552->dai_fmt == SND_SOC_DAIFMT_DSP_A)
delay += (tas2552->tdm_delay + 1);
else if (tas2552->dai_fmt == SND_SOC_DAIFMT_DSP_B)
delay += tas2552->tdm_delay;
/* Configure data delay */
snd_soc_write(codec, TAS2552_SER_CTRL_2, delay);
return 0;
}
static int tas2552_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
struct snd_soc_codec *codec = dai->codec;
struct tas2552_data *tas2552 = dev_get_drvdata(codec->dev);
u8 serial_format;
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBS_CFS:
serial_format = 0x00;
break;
case SND_SOC_DAIFMT_CBS_CFM:
serial_format = TAS2552_WCLKDIR;
break;
case SND_SOC_DAIFMT_CBM_CFS:
serial_format = TAS2552_BCLKDIR;
break;
case SND_SOC_DAIFMT_CBM_CFM:
serial_format = (TAS2552_BCLKDIR | TAS2552_WCLKDIR);
break;
default:
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):
break;
case (SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF):
case (SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF):
serial_format |= TAS2552_DATAFORMAT_DSP;
break;
case (SND_SOC_DAIFMT_RIGHT_J | SND_SOC_DAIFMT_NB_NF):
serial_format |= TAS2552_DATAFORMAT_RIGHT_J;
break;
case (SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_NB_NF):
serial_format |= TAS2552_DATAFORMAT_LEFT_J;
break;
default:
dev_vdbg(codec->dev, "DAI Format is not found\n");
return -EINVAL;
}
tas2552->dai_fmt = fmt & SND_SOC_DAIFMT_FORMAT_MASK;
snd_soc_update_bits(codec, TAS2552_SER_CTRL_1, TAS2552_DAI_FMT_MASK,
serial_format);
return 0;
}
static int tas2552_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id,
unsigned int freq, int dir)
{
struct snd_soc_codec *codec = dai->codec;
struct tas2552_data *tas2552 = dev_get_drvdata(codec->dev);
u8 reg, mask, val;
switch (clk_id) {
case TAS2552_PLL_CLKIN_MCLK:
case TAS2552_PLL_CLKIN_IVCLKIN:
if (freq < 512000 || freq > 24576000) {
/* out of range PLL_CLKIN, fall back to use BCLK */
dev_warn(codec->dev, "Out of range PLL_CLKIN: %u\n",
freq);
clk_id = TAS2552_PLL_CLKIN_BCLK;
freq = 0;
}
/* fall through */
case TAS2552_PLL_CLKIN_BCLK:
case TAS2552_PLL_CLKIN_1_8_FIXED:
mask = TAS2552_PLL_SRC_MASK;
val = (clk_id << 3) & mask; /* bit 4:5 in the register */
reg = TAS2552_CFG_1;
tas2552->pll_clk_id = clk_id;
tas2552->pll_clkin = freq;
break;
case TAS2552_PDM_CLK_PLL:
case TAS2552_PDM_CLK_IVCLKIN:
case TAS2552_PDM_CLK_BCLK:
case TAS2552_PDM_CLK_MCLK:
mask = TAS2552_PDM_CLK_SEL_MASK;
val = (clk_id >> 1) & mask; /* bit 0:1 in the register */
reg = TAS2552_PDM_CFG;
tas2552->pdm_clk_id = clk_id;
tas2552->pdm_clk = freq;
break;
default:
dev_err(codec->dev, "Invalid clk id: %d\n", clk_id);
return -EINVAL;
}
snd_soc_update_bits(codec, reg, mask, val);
return 0;
}
static int tas2552_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;
struct tas2552_data *tas2552 = snd_soc_codec_get_drvdata(codec);
unsigned int lsb;
if (unlikely(!tx_mask)) {
dev_err(codec->dev, "tx masks need to be non 0\n");
return -EINVAL;
}
/* TDM based on DSP mode requires slots to be adjacent */
lsb = __ffs(tx_mask);
if ((lsb + 1) != __fls(tx_mask)) {
dev_err(codec->dev, "Invalid mask, slots must be adjacent\n");
return -EINVAL;
}
tas2552->tdm_delay = lsb * slot_width;
/* DOUT in high-impedance on inactive bit clocks */
snd_soc_update_bits(codec, TAS2552_DOUT,
TAS2552_SDOUT_TRISTATE, TAS2552_SDOUT_TRISTATE);
return 0;
}
static int tas2552_mute(struct snd_soc_dai *dai, int mute)
{
u8 cfg1_reg = 0;
struct snd_soc_codec *codec = dai->codec;
if (mute)
cfg1_reg |= TAS2552_MUTE;
snd_soc_update_bits(codec, TAS2552_CFG_1, TAS2552_MUTE, cfg1_reg);
return 0;
}
#ifdef [31mCONFIG_PM[0m
static int tas2552_runtime_suspend(struct device *dev)
{
struct tas2552_data *tas2552 = dev_get_drvdata(dev);
tas2552_sw_shutdown(tas2552, 1);
regcache_cache_only(tas2552->regmap, true);
regcache_mark_dirty(tas2552->regmap);
gpiod_set_value(tas2552->enable_gpio, 0);
return 0;
}
static int tas2552_runtime_resume(struct device *dev)
{
struct tas2552_data *tas2552 = dev_get_drvdata(dev);
gpiod_set_value(tas2552->enable_gpio, 1);
tas2552_sw_shutdown(tas2552, 0);
regcache_cache_only(tas2552->regmap, false);
regcache_sync(tas2552->regmap);
return 0;
}
#endif
static const struct dev_pm_ops tas2552_pm = {
SET_RUNTIME_PM_OPS(tas2552_runtime_suspend, tas2552_runtime_resume,
NULL)
};
static const struct snd_soc_dai_ops tas2552_speaker_dai_ops = {
.hw_params = tas2552_hw_params,
.prepare = tas2552_prepare,
.set_sysclk = tas2552_set_dai_sysclk,
.set_fmt = tas2552_set_dai_fmt,
.set_tdm_slot = tas2552_set_dai_tdm_slot,
.digital_mute = tas2552_mute,
};
/* Formats supported by TAS2552 driver. */
#define TAS2552_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
/* TAS2552 dai structure. */
static struct snd_soc_dai_driver tas2552_dai[] = {
{
.name = "tas2552-amplifier",
.playback = {
.stream_name = "Playback",
.channels_min = 2,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_8000_192000,
.formats = TAS2552_FORMATS,
},
.ops = &tas2552_speaker_dai_ops,
},
};
/*
* DAC digital volumes. From -7 to 24 dB in 1 dB steps
*/
static DECLARE_TLV_DB_SCALE(dac_tlv, -700, 100, 0);
static const char * const tas2552_din_source_select[] = {
"Muted",
"Left",
"Right",
"Left + Right average",
};
static SOC_ENUM_SINGLE_DECL(tas2552_din_source_enum,
TAS2552_CFG_3, 3,
tas2552_din_source_select);
static const struct snd_kcontrol_new tas2552_snd_controls[] = {
SOC_SINGLE_TLV("Speaker Driver Playback Volume",
TAS2552_PGA_GAIN, 0, 0x1f, 0, dac_tlv),
SOC_ENUM("DIN source", tas2552_din_source_enum),
};
static int tas2552_codec_probe(struct snd_soc_codec *codec)
{
struct tas2552_data *tas2552 = snd_soc_codec_get_drvdata(codec);
int ret;
tas2552->codec = codec;
ret = regulator_bulk_enable(ARRAY_SIZE(tas2552->supplies),
tas2552->supplies);
if (ret != 0) {
dev_err(codec->dev, "Failed to enable supplies: %d\n",
ret);
return ret;
}
gpiod_set_value(tas2552->enable_gpio, 1);
ret = pm_runtime_get_sync(codec->dev);
if (ret < 0) {
dev_err(codec->dev, "Enabling device failed: %d\n",
ret);
goto probe_fail;
}
snd_soc_update_bits(codec, TAS2552_CFG_1, TAS2552_MUTE, TAS2552_MUTE);
snd_soc_write(codec, TAS2552_CFG_3, TAS2552_I2S_OUT_SEL |
TAS2552_DIN_SRC_SEL_AVG_L_R);
snd_soc_write(codec, TAS2552_OUTPUT_DATA,
TAS2552_PDM_DATA_SEL_V_I |
TAS2552_R_DATA_OUT(TAS2552_DATA_OUT_V_DATA));
snd_soc_write(codec, TAS2552_BOOST_APT_CTRL, TAS2552_APT_DELAY_200 |
TAS2552_APT_THRESH_20_17);
snd_soc_write(codec, TAS2552_CFG_2, TAS2552_BOOST_EN | TAS2552_APT_EN |
TAS2552_LIM_EN);
return 0;
probe_fail:
gpiod_set_value(tas2552->enable_gpio, 0);
regulator_bulk_disable(ARRAY_SIZE(tas2552->supplies),
tas2552->supplies);
return -EIO;
}
static int tas2552_codec_remove(struct snd_soc_codec *codec)
{
struct tas2552_data *tas2552 = snd_soc_codec_get_drvdata(codec);
pm_runtime_put(codec->dev);
gpiod_set_value(tas2552->enable_gpio, 0);
return 0;
};
#ifdef [31mCONFIG_PM[0m
static int tas2552_suspend(struct snd_soc_codec *codec)
{
struct tas2552_data *tas2552 = snd_soc_codec_get_drvdata(codec);
int ret;
ret = regulator_bulk_disable(ARRAY_SIZE(tas2552->supplies),
tas2552->supplies);
if (ret != 0)
dev_err(codec->dev, "Failed to disable supplies: %d\n",
ret);
return 0;
}
static int tas2552_resume(struct snd_soc_codec *codec)
{
struct tas2552_data *tas2552 = snd_soc_codec_get_drvdata(codec);
int ret;
ret = regulator_bulk_enable(ARRAY_SIZE(tas2552->supplies),
tas2552->supplies);
if (ret != 0) {
dev_err(codec->dev, "Failed to enable supplies: %d\n",
ret);
}
return 0;
}
#else
#define tas2552_suspend NULL
#define tas2552_resume NULL
#endif
static struct snd_soc_codec_driver soc_codec_dev_tas2552 = {
.probe = tas2552_codec_probe,
.remove = tas2552_codec_remove,
.suspend = tas2552_suspend,
.resume = tas2552_resume,
.ignore_pmdown_time = true,
.component_driver = {
.controls = tas2552_snd_controls,
.num_controls = ARRAY_SIZE(tas2552_snd_controls),
.dapm_widgets = tas2552_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(tas2552_dapm_widgets),
.dapm_routes = tas2552_audio_map,
.num_dapm_routes = ARRAY_SIZE(tas2552_audio_map),
},
};
static const struct regmap_config tas2552_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.max_register = TAS2552_MAX_REG,
.reg_defaults = tas2552_reg_defs,
.num_reg_defaults = ARRAY_SIZE(tas2552_reg_defs),
.cache_type = REGCACHE_RBTREE,
};
static int tas2552_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct device *dev;
struct tas2552_data *data;
int ret;
int i;
dev = &client->dev;
data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
if (data == NULL)
return -ENOMEM;
data->enable_gpio = devm_gpiod_get_optional(dev, "enable",
GPIOD_OUT_LOW);
if (IS_ERR(data->enable_gpio))
return PTR_ERR(data->enable_gpio);
data->tas2552_client = client;
data->regmap = devm_regmap_init_i2c(client, &tas2552_regmap_config);
if (IS_ERR(data->regmap)) {
ret = PTR_ERR(data->regmap);
dev_err(&client->dev, "Failed to allocate register map: %d\n",
ret);
return ret;
}
for (i = 0; i < ARRAY_SIZE(data->supplies); i++)
data->supplies[i].supply = tas2552_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;
}
pm_runtime_set_active(&client->dev);
pm_runtime_set_autosuspend_delay(&client->dev, 1000);
pm_runtime_use_autosuspend(&client->dev);
pm_runtime_enable(&client->dev);
pm_runtime_mark_last_busy(&client->dev);
pm_runtime_put_sync_autosuspend(&client->dev);
dev_set_drvdata(&client->dev, data);
ret = snd_soc_register_codec(&client->dev,
&soc_codec_dev_tas2552,
tas2552_dai, ARRAY_SIZE(tas2552_dai));
if (ret < 0)
dev_err(&client->dev, "Failed to register codec: %d\n", ret);
return ret;
}
static int tas2552_i2c_remove(struct i2c_client *client)
{
snd_soc_unregister_codec(&client->dev);
pm_runtime_disable(&client->dev);
return 0;
}
static const struct i2c_device_id tas2552_id[] = {
{ "tas2552", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, tas2552_id);
#if IS_ENABLED([31mCONFIG_OF[0m)
static const struct of_device_id tas2552_of_match[] = {
{ .compatible = "ti,tas2552", },
{},
};
MODULE_DEVICE_TABLE(of, tas2552_of_match);
#endif
static struct i2c_driver tas2552_i2c_driver = {
.driver = {
.name = "tas2552",
.of_match_table = of_match_ptr(tas2552_of_match),
.pm = &tas2552_pm,
},
.probe = tas2552_probe,
.remove = tas2552_i2c_remove,
.id_table = tas2552_id,
};
module_i2c_driver(tas2552_i2c_driver);
MODULE_AUTHOR("Dan Muprhy <dmurphy@ti.com>");
MODULE_DESCRIPTION("TAS2552 Audio amplifier driver");
MODULE_LICENSE("GPL");