blob: eee1afb81b8c4a2cdcd92545adc22ac890bdb255 [file] [log] [blame]
/*
* ak4497.c -- audio driver for AK4497
*
* Copyright (C) 2016 Asahi Kasei Microdevices Corporation
* Copyright (C) 2017, NXP
*
* 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.
*
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/i2c.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/gpio.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/initval.h>
#include <sound/tlv.h>
#include <sound/pcm_params.h>
#include <linux/of_gpio.h>
#include <linux/regmap.h>
#include <sound/pcm_params.h>
#include <linux/pm_runtime.h>
#include <linux/regulator/consumer.h>
#include "ak4497.h"
//#define AK4497_DEBUG //used at debug mode
#define AK4497_NUM_SUPPLIES 2
static const char *ak4497_supply_names[AK4497_NUM_SUPPLIES] = {
"DVDD",
"AVDD",
};
/* AK4497 Codec Private Data */
struct ak4497_priv {
struct i2c_client *i2c;
struct regmap *regmap;
int fs1; /* Sampling Frequency */
int nBickFreq; /* 0: 48fs for 24bit, 1: 64fs or more for 32bit */
int nTdmSds;
int pdn_gpio;
int mute_gpio;
int fmt;
struct regulator_bulk_data supplies[AK4497_NUM_SUPPLIES];
};
/* ak4497 register cache & default register settings */
static const struct reg_default ak4497_reg[] = {
{ AK4497_00_CONTROL1, 0x0C},
{ AK4497_01_CONTROL2, 0x22},
{ AK4497_02_CONTROL3, 0x00},
{ AK4497_03_LCHATT, 0xFF},
{ AK4497_04_RCHATT, 0xFF},
{ AK4497_05_CONTROL4, 0x00},
{ AK4497_06_DSD1, 0x00},
{ AK4497_07_CONTROL5, 0x00},
{ AK4497_08_SOUNDCONTROL, 0x00},
{ AK4497_09_DSD2, 0x00},
{ AK4497_0A_CONTROL7, 0x04},
{ AK4497_0B_CONTROL8, 0x00},
{ AK4497_0C_RESERVED, 0x00},
{ AK4497_0D_RESERVED, 0x00},
{ AK4497_0E_RESERVED, 0x00},
{ AK4497_0F_RESERVED, 0x00},
{ AK4497_10_RESERVED, 0x00},
{ AK4497_11_RESERVED, 0x00},
{ AK4497_12_RESERVED, 0x00},
{ AK4497_13_RESERVED, 0x00},
{ AK4497_14_RESERVED, 0x00},
{ AK4497_15_DFSREAD, 0x00},
};
/* Volume control:
* from -127 to 0 dB in 0.5 dB steps (mute instead of -127.5 dB)
*/
static DECLARE_TLV_DB_SCALE(latt_tlv, -12750, 50, 0);
static DECLARE_TLV_DB_SCALE(ratt_tlv, -12750, 50, 0);
static const char * const ak4497_ecs_select_texts[] = {"768kHz", "384kHz"};
static const char * const ak4497_dem_select_texts[] = {
"44.1kHz", "OFF", "48kHz", "32kHz"};
static const char * const ak4497_dzfm_select_texts[] = {
"Separated", "ANDed"};
static const char * const ak4497_sellr_select_texts[] = {
"Rch", "Lch"};
static const char * const ak4497_dckb_select_texts[] = {
"Falling", "Rising"};
static const char * const ak4497_dcks_select_texts[] = {
"512fs", "768fs"};
static const char * const ak4497_dsdd_select_texts[] = {
"Normal", "Volume Bypass"};
static const char * const ak4497_sc_select_texts[] = {
"Setting 1", "Setting 2", "Setting 3"};
static const char * const ak4497_dsdf_select_texts[] = {
"50kHz", "150kHz"};
static const char * const ak4497_dsd_input_path_select[] = {
"16_17_19pin", "3_4_5pin"};
static const char * const ak4497_ats_select_texts[] = {
"4080/fs", "2040/fs", "510/fs", "255/fs"};
static const struct soc_enum ak4497_dac_enum[] = {
SOC_ENUM_SINGLE(AK4497_00_CONTROL1, 5,
ARRAY_SIZE(ak4497_ecs_select_texts),
ak4497_ecs_select_texts),
SOC_ENUM_SINGLE(AK4497_01_CONTROL2, 1,
ARRAY_SIZE(ak4497_dem_select_texts),
ak4497_dem_select_texts),
SOC_ENUM_SINGLE(AK4497_01_CONTROL2, 6,
ARRAY_SIZE(ak4497_dzfm_select_texts),
ak4497_dzfm_select_texts),
SOC_ENUM_SINGLE(AK4497_02_CONTROL3, 1,
ARRAY_SIZE(ak4497_sellr_select_texts),
ak4497_sellr_select_texts),
SOC_ENUM_SINGLE(AK4497_02_CONTROL3, 4,
ARRAY_SIZE(ak4497_dckb_select_texts),
ak4497_dckb_select_texts),
SOC_ENUM_SINGLE(AK4497_02_CONTROL3, 5,
ARRAY_SIZE(ak4497_dcks_select_texts),
ak4497_dcks_select_texts),
SOC_ENUM_SINGLE(AK4497_06_DSD1, 1,
ARRAY_SIZE(ak4497_dsdd_select_texts),
ak4497_dsdd_select_texts),
SOC_ENUM_SINGLE(AK4497_08_SOUNDCONTROL, 0,
ARRAY_SIZE(ak4497_sc_select_texts),
ak4497_sc_select_texts),
SOC_ENUM_SINGLE(AK4497_09_DSD2, 1,
ARRAY_SIZE(ak4497_dsdf_select_texts),
ak4497_dsdf_select_texts),
SOC_ENUM_SINGLE(AK4497_09_DSD2, 2,
ARRAY_SIZE(ak4497_dsd_input_path_select),
ak4497_dsd_input_path_select),
SOC_ENUM_SINGLE(AK4497_0B_CONTROL8, 6,
ARRAY_SIZE(ak4497_ats_select_texts),
ak4497_ats_select_texts),
};
static const char * const ak4497_dsdsel_select_texts[] = {
"64fs", "128fs", "256fs", "512fs"};
static const char * const ak4497_bickfreq_select[] = {"48fs", "64fs"};
static const char * const ak4497_tdm_sds_select[] = {
"L1R1", "TDM128_L1R1", "TDM128_L2R2",
"TDM256_L1R1", "TDM256_L2R2", "TDM256_L3R3", "TDM256_L4R4",
"TDM512_L1R1", "TDM512_L2R2", "TDM512_L3R3", "TDM512_L4R4",
"TDM512_L5R5", "TDM512_L6R6", "TDM512_L7R7", "TDM512_L8R8",
};
static const char * const ak4497_adfs_select[] = {
"Normal Speed Mode", "Double Speed Mode", "Quad Speed Mode",
"Quad Speed Mode", "Oct Speed Mode", "Hex Speed Mode", "Oct Speed Mode",
"Hex Speed Mode"
};
static const struct soc_enum ak4497_dac_enum2[] = {
SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(ak4497_dsdsel_select_texts),
ak4497_dsdsel_select_texts),
SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(ak4497_bickfreq_select),
ak4497_bickfreq_select),
SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(ak4497_tdm_sds_select),
ak4497_tdm_sds_select),
SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(ak4497_adfs_select),
ak4497_adfs_select)
};
int ak4497_read(struct snd_soc_codec *codec, unsigned int reg,
unsigned int *val)
{
int ret;
ret = snd_soc_component_read(&codec->component, reg, val);
if (ret < 0)
dev_err(codec->dev, "Register %u read failed, ret=%d.\n", reg, ret);
return ret;
}
static int ak4497_get_dsdsel(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
unsigned int dsdsel0, dsdsel1;
ak4497_read(codec, AK4497_06_DSD1, &dsdsel0);
dsdsel0 &= AK4497_DSDSEL0;
ak4497_read(codec, AK4497_09_DSD2, &dsdsel1);
dsdsel1 &= AK4497_DSDSEL1;
ucontrol->value.enumerated.item[0] = ((dsdsel1 << 1) | dsdsel0);
return 0;
}
static int ak4497_set_dsdsel(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
unsigned int dsdsel = ucontrol->value.enumerated.item[0];
switch (dsdsel) {
case 0: /* 2.8224MHz */
snd_soc_update_bits(codec, AK4497_06_DSD1, 0x01, 0x00);
snd_soc_update_bits(codec, AK4497_09_DSD2, 0x01, 0x00);
break;
case 1: /* 5.6448MHz */
snd_soc_update_bits(codec, AK4497_06_DSD1, 0x01, 0x01);
snd_soc_update_bits(codec, AK4497_09_DSD2, 0x01, 0x00);
break;
case 2: /* 11.2896MHz */
snd_soc_update_bits(codec, AK4497_06_DSD1, 0x01, 0x00);
snd_soc_update_bits(codec, AK4497_09_DSD2, 0x01, 0x01);
break;
case 3: /* 22.5792MHz */
snd_soc_update_bits(codec, AK4497_06_DSD1, 0x01, 0x01);
snd_soc_update_bits(codec, AK4497_09_DSD2, 0x01, 0x01);
break;
default:
return -EINVAL;
}
return 0;
}
static int ak4497_get_bickfs(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
struct ak4497_priv *ak4497 = snd_soc_codec_get_drvdata(codec);
ucontrol->value.enumerated.item[0] = ak4497->nBickFreq;
return 0;
}
static int ak4497_set_bickfs(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
struct ak4497_priv *ak4497 = snd_soc_codec_get_drvdata(codec);
ak4497->nBickFreq = ucontrol->value.enumerated.item[0];
return 0;
}
static int ak4497_get_tdmsds(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
struct ak4497_priv *ak4497 = snd_soc_codec_get_drvdata(codec);
ucontrol->value.enumerated.item[0] = ak4497->nTdmSds;
return 0;
}
static int ak4497_set_tdmsds(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
struct ak4497_priv *ak4497 = snd_soc_codec_get_drvdata(codec);
int regA, regB;
ak4497->nTdmSds = ucontrol->value.enumerated.item[0];
if (ak4497->nTdmSds == 0)
regB = 0; /* SDS0 bit = 0 */
else
regB = (1 & (ak4497->nTdmSds - 1)); /* SDS0 bit = 1 */
switch (ak4497->nTdmSds) {
case 0:
regA = 0; /* Normal */
break;
case 1:
case 2:
regA = 4; /* TDM128 TDM1-0bits = 1 */
break;
case 3:
case 4:
regA = 8; /* TDM128 TDM1-0bits = 2 */
break;
case 5:
case 6:
regA = 9; /* TDM128 TDM1-0bits = 2 */
break;
case 7:
case 8:
regA = 0xC; /* TDM128 TDM1-0bits = 3 */
break;
case 9:
case 10:
regA = 0xD; /* TDM128 TDM1-0bits = 3 */
break;
case 11:
case 12:
regA = 0xE; /* TDM128 TDM1-0bits = 3 */
break;
case 13:
case 14:
regA = 0xF; /* TDM128 TDM1-0bits = 3 */
break;
default:
regA = 0;
regB = 0;
break;
}
regA <<= 4;
regB <<= 4;
snd_soc_update_bits(codec, AK4497_0A_CONTROL7, 0xF0, regA);
snd_soc_update_bits(codec, AK4497_0B_CONTROL8, 0x10, regB);
return 0;
}
static int ak4497_get_adfs(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
unsigned int nADFSbit;
ak4497_read(codec, AK4497_15_DFSREAD, &nADFSbit);
nADFSbit &= 0x7;
ucontrol->value.enumerated.item[0] = nADFSbit;
return 0;
}
static int ak4497_set_adfs(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
pr_debug("AK4497 : ADFS is read only\n");
return 0;
}
static const char * const gain_control_texts[] = {
"2.8_2.8Vpp", "2.8_2.5Vpp", "2.5_2.5Vpp", "3.75_3.75Vpp", "3.75_2.5Vpp"
};
static const unsigned int gain_control_values[] = {
0, 1, 2, 4, 5
};
static const struct soc_enum ak4497_gain_control_enum =
SOC_VALUE_ENUM_SINGLE(AK4497_07_CONTROL5, 1, 7,
ARRAY_SIZE(gain_control_texts),
gain_control_texts,
gain_control_values);
#ifdef AK4497_DEBUG
static const char * const test_reg_select[] = {
"read AK4497 Reg 00:0B",
"read AK4497 Reg 15"
};
static const struct soc_enum ak4497_enum[] = {
SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(test_reg_select), test_reg_select),
};
static int nTestRegNo;
static int get_test_reg(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
/* Get the current output routing */
ucontrol->value.enumerated.item[0] = nTestRegNo;
return 0;
}
static int set_test_reg(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
u32 currMode = ucontrol->value.enumerated.item[0];
int i, regs, rege;
unsigned int value;
nTestRegNo = currMode;
if (nTestRegNo == 0) {
regs = 0x00;
rege = 0x0B;
} else {
regs = 0x15;
rege = 0x15;
}
for (i = regs; i <= rege; i++) {
ak4497_read(codec, i, &value);
pr_debug("***AK4497 Addr,Reg=(%x, %x)\n", i, value);
}
return 0;
}
#endif
static const struct snd_kcontrol_new ak4497_snd_controls[] = {
SOC_SINGLE_TLV("AK4497 Lch Digital Volume",
AK4497_03_LCHATT, 0, 0xFF, 0, latt_tlv),
SOC_SINGLE_TLV("AK4497 Rch Digital Volume",
AK4497_04_RCHATT, 0, 0xFF, 0, ratt_tlv),
SOC_ENUM("AK4497 EX DF I/F clock", ak4497_dac_enum[0]),
SOC_ENUM("AK4497 De-emphasis Response", ak4497_dac_enum[1]),
SOC_ENUM("AK4497 Data Zero Detect Mode", ak4497_dac_enum[2]),
SOC_ENUM("AK4497 Data Selection at Mono Mode", ak4497_dac_enum[3]),
SOC_ENUM("AK4497 Polarity of DCLK", ak4497_dac_enum[4]),
SOC_ENUM("AK4497 DCKL Frequency", ak4497_dac_enum[5]),
SOC_ENUM("AK4497 DDSD Play Back Path", ak4497_dac_enum[6]),
SOC_ENUM("AK4497 Sound control", ak4497_dac_enum[7]),
SOC_ENUM("AK4497 Cut Off of DSD Filter", ak4497_dac_enum[8]),
SOC_ENUM_EXT("AK4497 DSD Data Stream", ak4497_dac_enum2[0],
ak4497_get_dsdsel, ak4497_set_dsdsel),
SOC_ENUM_EXT("AK4497 BICK Frequency Select", ak4497_dac_enum2[1],
ak4497_get_bickfs, ak4497_set_bickfs),
SOC_ENUM_EXT("AK4497 TDM Data Select", ak4497_dac_enum2[2],
ak4497_get_tdmsds, ak4497_set_tdmsds),
SOC_SINGLE("AK4497 External Digital Filter", AK4497_00_CONTROL1,
6, 1, 0),
SOC_SINGLE("AK4497 MCLK Frequency Auto Setting", AK4497_00_CONTROL1,
7, 1, 0),
SOC_SINGLE("AK4497 MCLK FS Auto Detect", AK4497_00_CONTROL1, 4, 1, 0),
SOC_SINGLE("AK4497 Soft Mute Control", AK4497_01_CONTROL2, 0, 1, 0),
SOC_SINGLE("AK4497 Short delay filter", AK4497_01_CONTROL2, 5, 1, 0),
SOC_SINGLE("AK4497 Data Zero Detect Enable", AK4497_01_CONTROL2,
7, 1, 0),
SOC_SINGLE("AK4497 Slow Roll-off Filter", AK4497_02_CONTROL3, 0, 1, 0),
SOC_SINGLE("AK4497 Invering Enable of DZF", AK4497_02_CONTROL3,
4, 1, 0),
SOC_SINGLE("AK4497 Mono Mode", AK4497_02_CONTROL3, 3, 1, 0),
SOC_SINGLE("AK4497 Super Slow Roll-off Filter", AK4497_05_CONTROL4,
0, 1, 0),
SOC_SINGLE("AK4497 AOUTR Phase Inverting", AK4497_05_CONTROL4,
6, 1, 0),
SOC_SINGLE("AK4497 AOUTL Phase Inverting", AK4497_05_CONTROL4,
7, 1, 0),
SOC_SINGLE("AK4497 DSD Mute Release", AK4497_06_DSD1, 3, 1, 0),
SOC_SINGLE("AK4497 DSD Mute Control Hold", AK4497_06_DSD1, 4, 1, 0),
SOC_SINGLE("AK4497 DSDR is detected", AK4497_06_DSD1, 5, 1, 0),
SOC_SINGLE("AK4497 DSDL is detected", AK4497_06_DSD1, 6, 1, 0),
SOC_SINGLE("AK4497 DSD Data Mute", AK4497_06_DSD1, 7, 1, 0),
SOC_SINGLE("AK4497 Synchronization Control", AK4497_07_CONTROL5,
0, 1, 0),
SOC_ENUM("AK4497 Output Level", ak4497_gain_control_enum),
SOC_SINGLE("AK4497 High Sonud Quality Mode", AK4497_08_SOUNDCONTROL,
2, 1, 0),
SOC_SINGLE("AK4497 Heavy Load Mode", AK4497_08_SOUNDCONTROL, 3, 1, 0),
SOC_ENUM("AK4497 DSD Data Input Pin", ak4497_dac_enum[9]),
SOC_SINGLE("AK4497 Daisy Chain", AK4497_0B_CONTROL8, 1, 1, 0),
SOC_ENUM("AK4497 ATT Transit Time", ak4497_dac_enum[10]),
SOC_ENUM_EXT("AK4497 Read FS Auto Detect Mode", ak4497_dac_enum2[3],
ak4497_get_adfs, ak4497_set_adfs),
#ifdef AK4497_DEBUG
SOC_ENUM_EXT("Reg Read", ak4497_enum[0], get_test_reg, set_test_reg),
#endif
};
static const char * const ak4497_dac_enable_texts[] = {"Off", "On"};
static SOC_ENUM_SINGLE_VIRT_DECL(ak4497_dac_enable_enum,
ak4497_dac_enable_texts);
static const struct snd_kcontrol_new ak4497_dac_enable_control =
SOC_DAPM_ENUM("DAC Switch", ak4497_dac_enable_enum);
/* ak4497 dapm widgets */
static const struct snd_soc_dapm_widget ak4497_dapm_widgets[] = {
SND_SOC_DAPM_AIF_IN("AK4497 SDTI", "Playback", 0, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_DAC("AK4497 DAC", NULL, AK4497_0A_CONTROL7, 2, 0),
SND_SOC_DAPM_MUX("AK4497 DAC Enable", SND_SOC_NOPM,
0, 0, &ak4497_dac_enable_control),
SND_SOC_DAPM_OUTPUT("AK4497 AOUT"),
};
static const struct snd_soc_dapm_route ak4497_intercon[] = {
{"AK4497 DAC", NULL, "AK4497 SDTI"},
{"AK4497 DAC Enable", "On", "AK4497 DAC"},
{"AK4497 AOUT", NULL, "AK4497 DAC Enable"},
};
static int ak4497_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 ak4497_priv *ak4497 = snd_soc_codec_get_drvdata(codec);
snd_pcm_format_t pcm_format = params_format(params);
unsigned int dfs, dfs2, dsdsel0, dsdsel1, format;
int nfs1;
bool is_dsd = false;
int dsd_bclk;
if (pcm_format == SNDRV_PCM_FORMAT_DSD_U8 ||
pcm_format == SNDRV_PCM_FORMAT_DSD_U16_LE ||
pcm_format == SNDRV_PCM_FORMAT_DSD_U16_BE ||
pcm_format == SNDRV_PCM_FORMAT_DSD_U32_LE ||
pcm_format == SNDRV_PCM_FORMAT_DSD_U32_BE)
is_dsd = true;
nfs1 = params_rate(params);
ak4497->fs1 = nfs1;
ak4497_read(codec, AK4497_01_CONTROL2, &dfs);
dfs &= ~AK4497_DFS;
ak4497_read(codec, AK4497_05_CONTROL4, &dfs2);
dfs2 &= ~AK4497_DFS2;
ak4497_read(codec, AK4497_06_DSD1, &dsdsel0);
dsdsel0 &= ~AK4497_DSDSEL0;
ak4497_read(codec, AK4497_09_DSD2, &dsdsel1);
dsdsel1 &= ~AK4497_DSDSEL1;
if (!is_dsd) {
switch (nfs1) {
case 8000:
case 11025:
case 16000:
case 22050:
case 32000:
case 44100:
case 48000:
dfs |= AK4497_DFS_48KHZ;
dfs2 |= AK4497_DFS2_48KHZ;
break;
case 88200:
case 96000:
dfs |= AK4497_DFS_96KHZ;
dfs2 |= AK4497_DFS2_48KHZ;
break;
case 176400:
case 192000:
dfs |= AK4497_DFS_192KHZ;
dfs2 |= AK4497_DFS2_48KHZ;
break;
case 352800:
case 384000:
dfs |= AK4497_DFS_384KHZ;
dfs2 |= AK4497_DFS2_384KHZ;
break;
case 705600:
case 768000:
dfs |= AK4497_DFS_768KHZ;
dfs2 |= AK4497_DFS2_384KHZ;
break;
default:
return -EINVAL;
}
} else {
dsd_bclk = params_rate(params) *
params_physical_width(params);
switch (dsd_bclk) {
case 2822400:
dsdsel0 |= AK4497_DSDSEL0_2MHZ;
dsdsel1 |= AK4497_DSDSEL1_2MHZ;
break;
case 5644800:
dsdsel0 |= AK4497_DSDSEL0_5MHZ;
dsdsel1 |= AK4497_DSDSEL1_5MHZ;
break;
case 11289600:
dsdsel0 |= AK4497_DSDSEL0_11MHZ;
dsdsel1 |= AK4497_DSDSEL1_11MHZ;
break;
case 22579200:
dsdsel0 |= AK4497_DSDSEL0_22MHZ;
dsdsel1 |= AK4497_DSDSEL1_22MHZ;
break;
default:
return -EINVAL;
}
snd_soc_write(codec, AK4497_06_DSD1, dsdsel0);
snd_soc_write(codec, AK4497_09_DSD2, dsdsel1);
}
snd_soc_write(codec, AK4497_01_CONTROL2, dfs);
snd_soc_write(codec, AK4497_05_CONTROL4, dfs2);
ak4497_read(codec, AK4497_00_CONTROL1, &format);
format &= ~AK4497_DIF;
switch (params_format(params)) {
case SNDRV_PCM_FORMAT_S16_LE:
if (ak4497->fmt == SND_SOC_DAIFMT_I2S)
format |= AK4497_DIF_24BIT_I2S;
else
format |= AK4497_DIF_16BIT_LSB;
break;
case SNDRV_PCM_FORMAT_S24_LE:
case SNDRV_PCM_FORMAT_S32_LE:
if (ak4497->fmt == SND_SOC_DAIFMT_I2S)
format |= AK4497_DIF_32BIT_I2S;
else if (ak4497->fmt == SND_SOC_DAIFMT_LEFT_J)
format |= AK4497_DIF_32BIT_MSB;
else if (ak4497->fmt == SND_SOC_DAIFMT_RIGHT_J)
format |= AK4497_DIF_32BIT_LSB;
else
return -EINVAL;
break;
case SNDRV_PCM_FORMAT_DSD_U8:
case SNDRV_PCM_FORMAT_DSD_U16_LE:
case SNDRV_PCM_FORMAT_DSD_U32_LE:
break;
default:
return -EINVAL;
}
snd_soc_write(codec, AK4497_00_CONTROL1, format);
return 0;
}
static int ak4497_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id,
unsigned int freq, int dir)
{
// struct snd_soc_codec *codec = dai->codec;
return 0;
}
static int ak4497_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
struct snd_soc_codec *codec = dai->codec;
struct ak4497_priv *ak4497 = snd_soc_codec_get_drvdata(codec);
unsigned int format, format2;
/* set master/slave audio interface */
ak4497_read(codec, AK4497_00_CONTROL1, &format);
format &= ~AK4497_DIF;
ak4497_read(codec, AK4497_02_CONTROL3, &format2);
format2 &= ~AK4497_DIF_DSD;
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBS_CFS:
break;
case SND_SOC_DAIFMT_CBM_CFM:
case SND_SOC_DAIFMT_CBS_CFM:
case SND_SOC_DAIFMT_CBM_CFS:
default:
dev_err(codec->dev, "Clock mode unsupported");
return -EINVAL;
}
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
ak4497->fmt = SND_SOC_DAIFMT_I2S;
break;
case SND_SOC_DAIFMT_LEFT_J:
ak4497->fmt = SND_SOC_DAIFMT_LEFT_J;
break;
case SND_SOC_DAIFMT_RIGHT_J:
ak4497->fmt = SND_SOC_DAIFMT_RIGHT_J;
break;
case SND_SOC_DAIFMT_PDM:
format2 |= AK4497_DIF_DSD_MODE;
break;
default:
return -EINVAL;
}
/* set format */
snd_soc_write(codec, AK4497_00_CONTROL1, format);
snd_soc_write(codec, AK4497_02_CONTROL3, format2);
return 0;
}
static bool ak4497_volatile(struct device *dev, unsigned int reg)
{
int ret;
#ifdef AK4497_DEBUG
ret = 1;
#else
switch (reg) {
case AK4497_15_DFSREAD:
ret = 1;
break;
default:
ret = 0;
break;
}
#endif
return ret;
}
static int ak4497_set_bias_level(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
switch (level) {
case SND_SOC_BIAS_ON:
case SND_SOC_BIAS_PREPARE:
case SND_SOC_BIAS_STANDBY:
/* RSTN bit = 1 */
snd_soc_update_bits(codec, AK4497_00_CONTROL1, 0x01, 0x01);
break;
case SND_SOC_BIAS_OFF:
/* RSTN bit = 0 */
snd_soc_update_bits(codec, AK4497_00_CONTROL1, 0x01, 0x00);
break;
}
return 0;
}
static int ak4497_set_dai_mute(struct snd_soc_dai *dai, int mute)
{
struct snd_soc_codec *codec = dai->codec;
struct ak4497_priv *ak4497 = snd_soc_codec_get_drvdata(codec);
int nfs, ndt;
nfs = ak4497->fs1;
if (mute) { /* SMUTE: 1 , MUTE */
snd_soc_update_bits(codec, AK4497_01_CONTROL2, 0x01, 0x01);
ndt = 7424000 / nfs;
mdelay(ndt);
/* External Mute ON */
if (gpio_is_valid(ak4497->mute_gpio))
gpio_set_value_cansleep(ak4497->mute_gpio, 1);
} else { /* SMUTE: 0, NORMAL operation */
/* External Mute OFF */
if (gpio_is_valid(ak4497->mute_gpio))
gpio_set_value_cansleep(ak4497->mute_gpio, 0);
snd_soc_update_bits(codec, AK4497_01_CONTROL2, 0x01, 0x00);
}
return 0;
}
#define AK4497_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
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)
#define AK4497_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE |\
SNDRV_PCM_FMTBIT_S32_LE |\
SNDRV_PCM_FMTBIT_DSD_U8 |\
SNDRV_PCM_FMTBIT_DSD_U16_LE |\
SNDRV_PCM_FMTBIT_DSD_U32_LE)
static const unsigned int ak4497_rates[] = {
8000, 11025, 16000, 22050,
32000, 44100, 48000, 88200,
96000, 176400, 192000, 352800,
384000, 705600, 768000, 1411200,
2822400,
};
static const struct snd_pcm_hw_constraint_list ak4497_rate_constraints = {
.count = ARRAY_SIZE(ak4497_rates),
.list = ak4497_rates,
};
static int ak4497_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai) {
int ret;
ret = snd_pcm_hw_constraint_list(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_RATE, &ak4497_rate_constraints);
return ret;
}
static struct snd_soc_dai_ops ak4497_dai_ops = {
.startup = ak4497_startup,
.hw_params = ak4497_hw_params,
.set_sysclk = ak4497_set_dai_sysclk,
.set_fmt = ak4497_set_dai_fmt,
.digital_mute = ak4497_set_dai_mute,
};
struct snd_soc_dai_driver ak4497_dai[] = {
{
.name = "ak4497-aif",
.playback = {
.stream_name = "Playback",
.channels_min = 1,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_KNOT,
.formats = AK4497_FORMATS,
},
.ops = &ak4497_dai_ops,
},
};
static int ak4497_init_reg(struct snd_soc_codec *codec)
{
struct ak4497_priv *ak4497 = snd_soc_codec_get_drvdata(codec);
int ret = 0;
/* External Mute ON */
if (gpio_is_valid(ak4497->mute_gpio))
gpio_set_value_cansleep(ak4497->mute_gpio, 1);
if (gpio_is_valid(ak4497->pdn_gpio)) {
gpio_set_value_cansleep(ak4497->pdn_gpio, 0);
usleep_range(1000, 2000);
gpio_set_value_cansleep(ak4497->pdn_gpio, 1);
usleep_range(1000, 2000);
}
/* ak4497_set_bias_level(codec, SND_SOC_BIAS_STANDBY); */
/* SYNCE bit = 1 */
ret = snd_soc_update_bits(codec, AK4497_07_CONTROL5, 0x01, 0x01);
if (ret)
return ret;
/* HLOAD bit = 1, SC2 bit = 1 */
ret = snd_soc_update_bits(codec, AK4497_08_SOUNDCONTROL, 0x0F, 0x0C);
if (ret)
return ret;
return ret;
}
static int ak4497_parse_dt(struct ak4497_priv *ak4497)
{
struct device *dev;
struct device_node *np;
dev = &(ak4497->i2c->dev);
np = dev->of_node;
ak4497->pdn_gpio = -1;
ak4497->mute_gpio = -1;
if (!np)
return -1;
ak4497->pdn_gpio = of_get_named_gpio(np, "ak4497,pdn-gpio", 0);
if (ak4497->pdn_gpio < 0)
ak4497->pdn_gpio = -1;
if (!gpio_is_valid(ak4497->pdn_gpio)) {
dev_err(dev, "ak4497 pdn pin(%u) is invalid\n",
ak4497->pdn_gpio);
ak4497->pdn_gpio = -1;
}
ak4497->mute_gpio = of_get_named_gpio(np, "ak4497,mute-gpio", 0);
if (ak4497->mute_gpio < 0)
ak4497->mute_gpio = -1;
if (!gpio_is_valid(ak4497->mute_gpio)) {
dev_err(dev, "ak4497 mute_gpio(%u) is invalid\n",
ak4497->mute_gpio);
ak4497->mute_gpio = -1;
}
return 0;
}
static int ak4497_probe(struct snd_soc_codec *codec)
{
struct ak4497_priv *ak4497 = snd_soc_codec_get_drvdata(codec);
int ret = 0;
ret = ak4497_parse_dt(ak4497);
if (ret)
return ret;
if (gpio_is_valid(ak4497->pdn_gpio)) {
ret = gpio_request(ak4497->pdn_gpio, "ak4497 pdn");
if (ret)
return ret;
gpio_direction_output(ak4497->pdn_gpio, 0);
}
if (gpio_is_valid(ak4497->mute_gpio)) {
ret = gpio_request(ak4497->mute_gpio, "ak4497 mute");
if (ret)
return ret;
gpio_direction_output(ak4497->mute_gpio, 0);
}
ret = ak4497_init_reg(codec);
if (ret)
return ret;
ak4497->fs1 = 48000;
ak4497->nBickFreq = 1;
ak4497->nTdmSds = 0;
return ret;
}
static int ak4497_remove(struct snd_soc_codec *codec)
{
struct ak4497_priv *ak4497 = snd_soc_codec_get_drvdata(codec);
ak4497_set_bias_level(codec, SND_SOC_BIAS_OFF);
if (gpio_is_valid(ak4497->pdn_gpio)) {
gpio_set_value_cansleep(ak4497->pdn_gpio, 0);
gpio_free(ak4497->pdn_gpio);
}
if (gpio_is_valid(ak4497->mute_gpio))
gpio_free(ak4497->mute_gpio);
return 0;
}
#ifdef CONFIG_PM
static int ak4497_runtime_suspend(struct device *dev)
{
struct ak4497_priv *ak4497 = dev_get_drvdata(dev);
regcache_cache_only(ak4497->regmap, true);
if (gpio_is_valid(ak4497->pdn_gpio)) {
gpio_set_value_cansleep(ak4497->pdn_gpio, 0);
usleep_range(1000, 2000);
}
if (gpio_is_valid(ak4497->mute_gpio))
gpio_free(ak4497->mute_gpio);
return 0;
}
static int ak4497_runtime_resume(struct device *dev)
{
struct ak4497_priv *ak4497 = dev_get_drvdata(dev);
/* External Mute ON */
if (gpio_is_valid(ak4497->mute_gpio))
gpio_set_value_cansleep(ak4497->mute_gpio, 1);
if (gpio_is_valid(ak4497->pdn_gpio)) {
gpio_set_value_cansleep(ak4497->pdn_gpio, 1);
usleep_range(1000, 2000);
}
regcache_cache_only(ak4497->regmap, false);
regcache_mark_dirty(ak4497->regmap);
return regcache_sync(ak4497->regmap);
}
#endif /* CONFIG_PM */
static const struct dev_pm_ops ak4497_pm = {
SET_RUNTIME_PM_OPS(ak4497_runtime_suspend, ak4497_runtime_resume, NULL)
SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, pm_runtime_force_resume)
};
struct snd_soc_codec_driver soc_codec_dev_ak4497 = {
.probe = ak4497_probe,
.remove = ak4497_remove,
.idle_bias_off = true,
.set_bias_level = ak4497_set_bias_level,
.component_driver = {
.controls = ak4497_snd_controls,
.num_controls = ARRAY_SIZE(ak4497_snd_controls),
.dapm_widgets = ak4497_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(ak4497_dapm_widgets),
.dapm_routes = ak4497_intercon,
.num_dapm_routes = ARRAY_SIZE(ak4497_intercon),
},
};
static const struct regmap_config ak4497_regmap = {
.reg_bits = 8,
.val_bits = 8,
.max_register = AK4497_MAX_REGISTERS,
.volatile_reg = ak4497_volatile,
.reg_defaults = ak4497_reg,
.num_reg_defaults = ARRAY_SIZE(ak4497_reg),
.cache_type = REGCACHE_RBTREE,
};
static int ak4497_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct ak4497_priv *ak4497;
int ret = 0;
int i;
ak4497 = devm_kzalloc(&i2c->dev,
sizeof(struct ak4497_priv), GFP_KERNEL);
if (ak4497 == NULL)
return -ENOMEM;
ak4497->regmap = devm_regmap_init_i2c(i2c, &ak4497_regmap);
if (IS_ERR(ak4497->regmap))
return PTR_ERR(ak4497->regmap);
i2c_set_clientdata(i2c, ak4497);
ak4497->i2c = i2c;
for (i = 0; i < ARRAY_SIZE(ak4497->supplies); i++)
ak4497->supplies[i].supply = ak4497_supply_names[i];
ret = devm_regulator_bulk_get(&i2c->dev, ARRAY_SIZE(ak4497->supplies),
ak4497->supplies);
if (ret != 0) {
dev_err(&i2c->dev, "Failed to request supplies: %d\n", ret);
return ret;
}
ret = regulator_bulk_enable(ARRAY_SIZE(ak4497->supplies),
ak4497->supplies);
if (ret != 0) {
dev_err(&i2c->dev, "Failed to enable supplies: %d\n", ret);
return ret;
}
ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_ak4497,
&ak4497_dai[0], ARRAY_SIZE(ak4497_dai));
if (ret < 0)
return ret;
pm_runtime_enable(&i2c->dev);
return 0;
}
static int ak4497_i2c_remove(struct i2c_client *client)
{
snd_soc_unregister_codec(&client->dev);
pm_runtime_disable(&client->dev);
return 0;
}
static const struct of_device_id ak4497_i2c_dt_ids[] = {
{ .compatible = "asahi-kasei,ak4497"},
{ }
};
static const struct i2c_device_id ak4497_i2c_id[] = {
{ "ak4497", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, ak4497_i2c_id);
static struct i2c_driver ak4497_i2c_driver = {
.driver = {
.name = "ak4497",
.of_match_table = of_match_ptr(ak4497_i2c_dt_ids),
.pm = &ak4497_pm,
},
.probe = ak4497_i2c_probe,
.remove = ak4497_i2c_remove,
.id_table = ak4497_i2c_id,
};
module_i2c_driver(ak4497_i2c_driver);
MODULE_AUTHOR("Junichi Wakasugi <wakasugi.jb@om.asahi-kasei.co.jp>");
MODULE_AUTHOR("Daniel Baluta <daniel.baluta@nxp.com>");
MODULE_DESCRIPTION("ASoC ak4497 codec driver");
MODULE_LICENSE("GPL");