// SPDX-License-Identifier: GPL-2.0
/*
* ak4619.c -- Asahi Kasei ALSA SoC Audio driver
*
* Copyright (C) 2023 Renesas Electronics Corporation
* Khanh Le <[email protected]>
*
* Based on ak4613.c by Kuninori Morimoto
* Based on da7213.c by Adam Thomson
* Based on ak4641.c by Harald Welte
*/
#include <linux/clk.h>
#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/of_device.h>
#include <linux/module.h>
#include <linux/regmap.h>
#include <sound/soc.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/tlv.h>
/*
* Registers
*/
#define PWR_MGMT 0x00 /* Power Management */
#define AU_IFF1 0x01 /* Audio I/F Format */
#define AU_IFF2 0x02 /* Audio I/F Format (Extended) */
#define SYS_CLK 0x03 /* System Clock Setting */
#define MIC_AMP1 0x04 /* MIC AMP Gain 1 */
#define MIC_AMP2 0x05 /* MIC AMP Gain 2 */
#define LADC1 0x06 /* ADC1 Lch Digital Volume */
#define RADC1 0x07 /* ADC1 Rch Digital Volume */
#define LADC2 0x08 /* ADC2 Lch Digital Volume */
#define RADC2 0x09 /* ADC2 Rch Digital Volume */
#define ADC_DF 0x0a /* ADC Digital Filter Setting */
#define ADC_AI 0x0b /* ADC Analog Input Setting */
#define ADC_MHPF 0x0D /* ADC Mute & HPF Control */
#define LDAC1 0x0E /* DAC1 Lch Digital Volume */
#define RDAC1 0x0F /* DAC1 Rch Digital Volume */
#define LDAC2 0x10 /* DAC2 Lch Digital Volume */
#define RDAC2 0x11 /* DAC2 Rch Digital Volume */
#define DAC_IS 0x12 /* DAC Input Select Setting */
#define DAC_DEMP 0x13 /* DAC De-Emphasis Setting */
#define DAC_MF 0x14 /* DAC Mute & Filter Setting */
/*
* Bit fields
*/
/* Power Management */
#define PMAD2 BIT(5)
#define PMAD1 BIT(4)
#define PMDA2 BIT(2)
#define PMDA1 BIT(1)
#define RSTN BIT(0)
/* Audio_I/F Format */
#define DCF_STEREO_I2S (0x0 << 4)
#define DCF_STEREO_MSB (0x5 << 4)
#define DCF_PCM_SF (0x6 << 4)
#define DCF_PCM_LF (0x7 << 4)
#define DSL_32 (0x3 << 2)
#define DCF_MASK (0x7 << 4)
#define DSL_MASK (0x3 << 2)
#define BCKP BIT(1)
/* Audio_I/F Format (Extended) */
#define DIDL_24 (0x0 << 2)
#define DIDL_20 (0x1 << 2)
#define DIDL_16 (0x2 << 2)
#define DIDL_32 (0x3 << 2)
#define DODL_24 (0x0 << 0)
#define DODL_20 (0x1 << 0)
#define DODL_16 (0x2 << 0)
#define DIDL_MASK (0x3 << 2)
#define DODL_MASK (0x3 << 0)
#define SLOT BIT(4)
/* System Clock Setting */
#define FS_MASK 0x7
/* MIC AMP Gain */
#define MGNL_SHIFT 4
#define MGNR_SHIFT 0
#define MGN_MAX 0xB
/* ADC Digital Volume */
#define VOLAD_SHIFT 0
#define VOLAD_MAX 0xFF
/* ADC Digital Filter Setting */
#define AD1SL_SHIFT 0
#define AD2SL_SHIFT 4
/* Analog Input Select */
#define AD1LSEL_SHIFT 6
#define AD1RSEL_SHIFT 4
#define AD2LSEL_SHIFT 2
#define AD2RSEL_SHIFT 0
/* ADC Mute & HPF Control */
#define ATSPAD_SHIFT 7
#define AD1MUTE_SHIFT 5
#define AD2MUTE_SHIFT 6
#define AD1MUTE_MAX 1
#define AD2MUTE_MAX 1
#define AD1MUTE_EN BIT(5)
#define AD2MUTE_EN BIT(6)
#define AD1HPFN_SHIFT 1
#define AD1HPFN_MAX 1
#define AD2HPFN_SHIFT 2
#define AD2HPFN_MAX 1
/* DAC Digital Volume */
#define VOLDA_SHIFT 0
#define VOLDA_MAX 0xFF
/* DAC Input Select Setting */
#define DAC1SEL_SHIFT 0
#define DAC2SEL_SHIFT 2
/* DAC De-Emphasis Setting */
#define DEM1_32000 (0x3 << 0)
#define DEM1_44100 (0x0 << 0)
#define DEM1_48000 (0x2 << 0)
#define DEM1_OFF (0x1 << 0)
#define DEM2_32000 (0x3 << 2)
#define DEM2_44100 (0x0 << 2)
#define DEM2_48000 (0x2 << 2)
#define DEM2_OFF (0x1 << 2)
#define DEM1_MASK (0x3 << 0)
#define DEM2_MASK (0x3 << 2)
#define DEM1_SHIFT 0
#define DEM2_SHIFT 2
/* DAC Mute & Filter Setting */
#define DA1MUTE_SHIFT 4
#define DA1MUTE_MAX 1
#define DA2MUTE_SHIFT 5
#define DA2MUTE_MAX 1
#define DA1MUTE_EN BIT(4)
#define DA2MUTE_EN BIT(5)
#define ATSPDA_SHIFT 7
#define DA1SL_SHIFT 0
#define DA2SL_SHIFT 2
/* Codec private data */
struct ak4619_priv {
struct regmap *regmap;
struct snd_pcm_hw_constraint_list constraint;
int deemph_en;
unsigned int playback_rate;
unsigned int sysclk;
};
/*
* DAC Volume
*
* max : 0x00 : +12.0 dB
* ( 0.5 dB step )
* min : 0xFE : -115.0 dB
* mute: 0xFF
*/
static const DECLARE_TLV_DB_SCALE(dac_tlv, -11550, 50, 1);
/*
* MIC Volume
*
* max : 0x0B : +27.0 dB
* ( 3 dB step )
* min: 0x00 : -6.0 dB
*/
static const DECLARE_TLV_DB_SCALE(mic_tlv, -600, 300, 0);
/*
* ADC Volume
*
* max : 0x00 : +24.0 dB
* ( 0.5 dB step )
* min : 0xFE : -103.0 dB
* mute: 0xFF
*/
static const DECLARE_TLV_DB_SCALE(adc_tlv, -10350, 50, 1);
/* ADC & DAC Volume Level Transition Time select */
static const char * const ak4619_vol_trans_txt[] = {
"4/fs", "16/fs"
};
static SOC_ENUM_SINGLE_DECL(ak4619_adc_vol_trans, ADC_MHPF, ATSPAD_SHIFT, ak4619_vol_trans_txt);
static SOC_ENUM_SINGLE_DECL(ak4619_dac_vol_trans, DAC_MF, ATSPDA_SHIFT, ak4619_vol_trans_txt);
/* ADC Digital Filter select */
static const char * const ak4619_adc_digi_fil_txt[] = {
"Sharp Roll-Off Filter",
"Slow Roll-Off Filter",
"Short Delay Sharp Roll-Off Filter",
"Short Delay Slow Roll-Off Filter",
"Voice Filter"
};
static SOC_ENUM_SINGLE_DECL(ak4619_adc_1_digi_fil, ADC_DF, AD1SL_SHIFT, ak4619_adc_digi_fil_txt);
static SOC_ENUM_SINGLE_DECL(ak4619_adc_2_digi_fil, ADC_DF, AD2SL_SHIFT, ak4619_adc_digi_fil_txt);
/* DAC De-Emphasis Filter select */
static const char * const ak4619_dac_de_emp_txt[] = {
"44.1kHz", "OFF", "48kHz", "32kHz"
};
static SOC_ENUM_SINGLE_DECL(ak4619_dac_1_de_emp, DAC_DEMP, DEM1_SHIFT, ak4619_dac_de_emp_txt);
static SOC_ENUM_SINGLE_DECL(ak4619_dac_2_de_emp, DAC_DEMP, DEM2_SHIFT, ak4619_dac_de_emp_txt);
/* DAC Digital Filter select */
static const char * const ak4619_dac_digi_fil_txt[] = {
"Sharp Roll-Off Filter",
"Slow Roll-Off Filter",
"Short Delay Sharp Roll-Off Filter",
"Short Delay Slow Roll-Off Filter"
};
static SOC_ENUM_SINGLE_DECL(ak4619_dac_1_digi_fil, DAC_MF, DA1SL_SHIFT, ak4619_dac_digi_fil_txt);
static SOC_ENUM_SINGLE_DECL(ak4619_dac_2_digi_fil, DAC_MF, DA2SL_SHIFT, ak4619_dac_digi_fil_txt);
/*
* Control functions
*/
static void ak4619_set_deemph(struct snd_soc_component *component)
{
struct ak4619_priv *ak4619 = snd_soc_component_get_drvdata(component);
u8 dem = 0;
if (!ak4619->deemph_en)
return;
switch (ak4619->playback_rate) {
case 32000:
dem |= DEM1_32000 | DEM2_32000;
break;
case 44100:
dem |= DEM1_44100 | DEM2_44100;
break;
case 48000:
dem |= DEM1_48000 | DEM2_48000;
break;
default:
dem |= DEM1_OFF | DEM2_OFF;
break;
}
snd_soc_component_update_bits(component, DAC_DEMP, DEM1_MASK | DEM2_MASK, dem);
}
static int ak4619_put_deemph(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
struct ak4619_priv *ak4619 = snd_soc_component_get_drvdata(component);
int deemph_en = ucontrol->value.integer.value[0];
int ret = 0;
switch (deemph_en) {
case 0:
case 1:
break;
default:
return -EINVAL;
}
if (ak4619->deemph_en != deemph_en)
ret = 1; /* The value changed */
ak4619->deemph_en = deemph_en;
ak4619_set_deemph(component);
return ret;
}
static int ak4619_get_deemph(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
struct ak4619_priv *ak4619 = snd_soc_component_get_drvdata(component);
ucontrol->value.integer.value[0] = ak4619->deemph_en;
return 0;
};
/*
* KControls
*/
static const struct snd_kcontrol_new ak4619_snd_controls[] = {
/* Volume controls */
SOC_DOUBLE_R_TLV("DAC 1 Volume", LDAC1, RDAC1, VOLDA_SHIFT, VOLDA_MAX, 1, dac_tlv),
SOC_DOUBLE_R_TLV("DAC 2 Volume", LDAC2, RDAC2, VOLDA_SHIFT, VOLDA_MAX, 1, dac_tlv),
SOC_DOUBLE_R_TLV("ADC 1 Volume", LADC1, RADC1, VOLAD_SHIFT, VOLAD_MAX, 1, adc_tlv),
SOC_DOUBLE_R_TLV("ADC 2 Volume", LADC2, RADC2, VOLAD_SHIFT, VOLAD_MAX, 1, adc_tlv),
SOC_DOUBLE_TLV("Mic 1 Volume", MIC_AMP1, MGNL_SHIFT, MGNR_SHIFT, MGN_MAX, 0, mic_tlv),
SOC_DOUBLE_TLV("Mic 2 Volume", MIC_AMP2, MGNL_SHIFT, MGNR_SHIFT, MGN_MAX, 0, mic_tlv),
/* Volume Level Transition Time controls */
SOC_ENUM("ADC Volume Level Transition Time", ak4619_adc_vol_trans),
SOC_ENUM("DAC Volume Level Transition Time", ak4619_dac_vol_trans),
/* Mute controls */
SOC_SINGLE("DAC 1 Switch", DAC_MF, DA1MUTE_SHIFT, DA1MUTE_MAX, 1),
SOC_SINGLE("DAC 2 Switch", DAC_MF, DA2MUTE_SHIFT, DA2MUTE_MAX, 1),
SOC_SINGLE("ADC 1 Switch", ADC_MHPF, AD1MUTE_SHIFT, AD1MUTE_MAX, 1),
SOC_SINGLE("ADC 2 Switch", ADC_MHPF, AD2MUTE_SHIFT, AD2MUTE_MAX, 1),
/* Filter controls */
SOC_ENUM("ADC 1 Digital Filter", ak4619_adc_1_digi_fil),
SOC_ENUM("ADC 2 Digital Filter", ak4619_adc_2_digi_fil),
SOC_SINGLE("ADC 1 HPF", ADC_MHPF, AD1HPFN_SHIFT, AD1HPFN_MAX, 1),
SOC_SINGLE("ADC 2 HPF", ADC_MHPF, AD2HPFN_SHIFT, AD2HPFN_MAX, 1),
SOC_ENUM("DAC 1 De-Emphasis Filter", ak4619_dac_1_de_emp),
SOC_ENUM("DAC 2 De-Emphasis Filter", ak4619_dac_2_de_emp),
SOC_ENUM("DAC 1 Digital Filter", ak4619_dac_1_digi_fil),
SOC_ENUM("DAC 2 Digital Filter", ak4619_dac_2_digi_fil),
SOC_SINGLE_BOOL_EXT("Playback De-Emphasis Switch", 0, ak4619_get_deemph, ak4619_put_deemph),
};
/*
* DAPM
*/
/* Analog input mode */
static const char * const ak4619_analog_in_txt[] = {
"Differential", "Single-Ended1", "Single-Ended2", "Pseudo Differential"
};
static SOC_ENUM_SINGLE_DECL(ak4619_ad_1_left_in, ADC_AI, AD1LSEL_SHIFT, ak4619_analog_in_txt);
static SOC_ENUM_SINGLE_DECL(ak4619_ad_1_right_in, ADC_AI, AD1RSEL_SHIFT, ak4619_analog_in_txt);
static SOC_ENUM_SINGLE_DECL(ak4619_ad_2_left_in, ADC_AI, AD2LSEL_SHIFT, ak4619_analog_in_txt);
static SOC_ENUM_SINGLE_DECL(ak4619_ad_2_right_in, ADC_AI, AD2RSEL_SHIFT, ak4619_analog_in_txt);
static const struct snd_kcontrol_new ak4619_ad_1_left_in_mux =
SOC_DAPM_ENUM("Analog Input 1 Left MUX", ak4619_ad_1_left_in);
static const struct snd_kcontrol_new ak4619_ad_1_right_in_mux =
SOC_DAPM_ENUM("Analog Input 1 Right MUX", ak4619_ad_1_right_in);
static const struct snd_kcontrol_new ak4619_ad_2_left_in_mux =
SOC_DAPM_ENUM("Analog Input 2 Left MUX", ak4619_ad_2_left_in);
static const struct snd_kcontrol_new ak4619_ad_2_right_in_mux =
SOC_DAPM_ENUM("Analog Input 2 Right MUX", ak4619_ad_2_right_in);
/* DAC source mux */
static const char * const ak4619_dac_in_txt[] = {
"SDIN1", "SDIN2", "SDOUT1", "SDOUT2"
};
static SOC_ENUM_SINGLE_DECL(ak4619_dac_1_in, DAC_IS, DAC1SEL_SHIFT, ak4619_dac_in_txt);
static SOC_ENUM_SINGLE_DECL(ak4619_dac_2_in, DAC_IS, DAC2SEL_SHIFT, ak4619_dac_in_txt);
static const struct snd_kcontrol_new ak4619_dac_1_in_mux =
SOC_DAPM_ENUM("DAC 1 Source MUX", ak4619_dac_1_in);
static const struct snd_kcontrol_new ak4619_dac_2_in_mux =
SOC_DAPM_ENUM("DAC 2 Source MUX", ak4619_dac_2_in);
static const struct snd_soc_dapm_widget ak4619_dapm_widgets[] = {
/* DACs */
SND_SOC_DAPM_DAC("DAC1", NULL, PWR_MGMT, 1, 0),
SND_SOC_DAPM_DAC("DAC2", NULL, PWR_MGMT, 2, 0),
/* ADCs */
SND_SOC_DAPM_ADC("ADC1", NULL, PWR_MGMT, 4, 0),
SND_SOC_DAPM_ADC("ADC2", NULL, PWR_MGMT, 5, 0),
/* Outputs */
SND_SOC_DAPM_OUTPUT("AOUT1L"),
SND_SOC_DAPM_OUTPUT("AOUT2L"),
SND_SOC_DAPM_OUTPUT("AOUT1R"),
SND_SOC_DAPM_OUTPUT("AOUT2R"),
/* Inputs */
SND_SOC_DAPM_INPUT("AIN1L"),
SND_SOC_DAPM_INPUT("AIN2L"),
SND_SOC_DAPM_INPUT("AIN4L"),
SND_SOC_DAPM_INPUT("AIN5L"),
SND_SOC_DAPM_INPUT("AIN1R"),
SND_SOC_DAPM_INPUT("AIN2R"),
SND_SOC_DAPM_INPUT("AIN4R"),
SND_SOC_DAPM_INPUT("AIN5R"),
SND_SOC_DAPM_INPUT("MIC1L"),
SND_SOC_DAPM_INPUT("MIC1R"),
SND_SOC_DAPM_INPUT("MIC2L"),
SND_SOC_DAPM_INPUT("MIC2R"),
/* DAI */
SND_SOC_DAPM_AIF_IN("SDIN1", "Playback", 0, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_AIF_IN("SDIN2", "Playback", 0, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_AIF_OUT("SDOUT1", "Capture", 0, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_AIF_OUT("SDOUT2", "Capture", 0, SND_SOC_NOPM, 0, 0),
/* MUXs for Mic PGA source selection */
SND_SOC_DAPM_MUX("Analog Input 1 Left MUX", SND_SOC_NOPM, 0, 0, &ak4619_ad_1_left_in_mux),
SND_SOC_DAPM_MUX("Analog Input 1 Right MUX", SND_SOC_NOPM, 0, 0, &ak4619_ad_1_right_in_mux),
SND_SOC_DAPM_MUX("Analog Input 2 Left MUX", SND_SOC_NOPM, 0, 0, &ak4619_ad_2_left_in_mux),
SND_SOC_DAPM_MUX("Analog Input 2 Right MUX", SND_SOC_NOPM, 0, 0, &ak4619_ad_2_right_in_mux),
/* MUXs for DAC source selection */
SND_SOC_DAPM_MUX("DAC 1 Source MUX", SND_SOC_NOPM, 0, 0, &ak4619_dac_1_in_mux),
SND_SOC_DAPM_MUX("DAC 2 Source MUX", SND_SOC_NOPM, 0, 0, &ak4619_dac_2_in_mux),
};
static const struct snd_soc_dapm_route ak4619_intercon[] = {
/* Dest Connecting Widget Source */
/* Output path */
{"AOUT1L", NULL, "DAC1"},
{"AOUT2L", NULL, "DAC2"},
{"AOUT1R", NULL, "DAC1"},
{"AOUT2R", NULL, "DAC2"},
{"DAC1", NULL, "DAC 1 Source MUX"},
{"DAC2", NULL, "DAC 2 Source MUX"},
{"DAC 1 Source MUX", "SDIN1", "SDIN1"},
{"DAC 1 Source MUX", "SDIN2", "SDIN2"},
{"DAC 1 Source MUX", "SDOUT1", "SDOUT1"},
{"DAC 1 Source MUX", "SDOUT2", "SDOUT2"},
{"DAC 2 Source MUX", "SDIN1", "SDIN1"},
{"DAC 2 Source MUX", "SDIN2", "SDIN2"},
{"DAC 2 Source MUX", "SDOUT1", "SDOUT1"},
{"DAC 2 Source MUX", "SDOUT2", "SDOUT2"},
/* Input path */
{"SDOUT1", NULL, "ADC1"},
{"SDOUT2", NULL, "ADC2"},
{"ADC1", NULL, "Analog Input 1 Left MUX"},
{"ADC1", NULL, "Analog Input 1 Right MUX"},
{"ADC2", NULL, "Analog Input 2 Left MUX"},
{"ADC2", NULL, "Analog Input 2 Right MUX"},
{"Analog Input 1 Left MUX", "Differential", "MIC1L"},
{"Analog Input 1 Left MUX", "Single-Ended1", "MIC1L"},
{"Analog Input 1 Left MUX", "Single-Ended2", "MIC1L"},
{"Analog Input 1 Left MUX", "Pseudo Differential", "MIC1L"},
{"Analog Input 1 Right MUX", "Differential", "MIC1R"},
{"Analog Input 1 Right MUX", "Single-Ended1", "MIC1R"},
{"Analog Input 1 Right MUX", "Single-Ended2", "MIC1R"},
{"Analog Input 1 Right MUX", "Pseudo Differential", "MIC1R"},
{"Analog Input 2 Left MUX", "Differential", "MIC2L"},
{"Analog Input 2 Left MUX", "Single-Ended1", "MIC2L"},
{"Analog Input 2 Left MUX", "Single-Ended2", "MIC2L"},
{"Analog Input 2 Left MUX", "Pseudo Differential", "MIC2L"},
{"Analog Input 2 Right MUX", "Differential", "MIC2R"},
{"Analog Input 2 Right MUX", "Single-Ended1", "MIC2R"},
{"Analog Input 2 Right MUX", "Single-Ended2", "MIC2R"},
{"Analog Input 2 Right MUX", "Pseudo Differential", "MIC2R"},
{"MIC1L", NULL, "AIN1L"},
{"MIC1L", NULL, "AIN2L"},
{"MIC1R", NULL, "AIN1R"},
{"MIC1R", NULL, "AIN2R"},
{"MIC2L", NULL, "AIN4L"},
{"MIC2L", NULL, "AIN5L"},
{"MIC2R", NULL, "AIN4R"},
{"MIC2R", NULL, "AIN5R"},
};
static const struct reg_default ak4619_reg_defaults[] = {
{ PWR_MGMT, 0x00 },
{ AU_IFF1, 0x0C },
{ AU_IFF2, 0x0C },
{ SYS_CLK, 0x00 },
{ MIC_AMP1, 0x22 },
{ MIC_AMP2, 0x22 },
{ LADC1, 0x30 },
{ RADC1, 0x30 },
{ LADC2, 0x30 },
{ RADC2, 0x30 },
{ ADC_DF, 0x00 },
{ ADC_AI, 0x00 },
{ ADC_MHPF, 0x00 },
{ LDAC1, 0x18 },
{ RDAC1, 0x18 },
{ LDAC2, 0x18 },
{ RDAC2, 0x18 },
{ DAC_IS, 0x04 },
{ DAC_DEMP, 0x05 },
{ DAC_MF, 0x0A },
};
static int ak4619_set_bias_level(struct snd_soc_component *component,
enum snd_soc_bias_level level)
{
u8 pwr_ctrl = 0;
switch (level) {
case SND_SOC_BIAS_ON:
pwr_ctrl |= RSTN;
fallthrough;
case SND_SOC_BIAS_PREPARE:
pwr_ctrl |= PMAD1 | PMAD2 | PMDA1 | PMDA2;
fallthrough;
case SND_SOC_BIAS_STANDBY:
case SND_SOC_BIAS_OFF:
default:
break;
}
snd_soc_component_write(component, PWR_MGMT, pwr_ctrl);
return 0;
}
static int ak4619_dai_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct snd_soc_component *component = dai->component;
struct ak4619_priv *ak4619 = snd_soc_component_get_drvdata(component);
unsigned int width;
unsigned int rate;
unsigned int fs;
bool is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
u8 dai_ctrl = 0;
u8 clk_mode = 0;
width = params_width(params);
switch (width) {
case 16:
dai_ctrl |= is_play ? DIDL_16 : DODL_16;
break;
case 20:
dai_ctrl |= is_play ? DIDL_20 : DODL_20;
break;
case 24:
dai_ctrl |= is_play ? DIDL_24 : DODL_24;
break;
case 32:
if (is_play)
dai_ctrl |= DIDL_32;
else
return -EINVAL;
break;
default:
return -EINVAL;
}
rate = params_rate(params);
if (rate)
fs = ak4619->sysclk / rate;
else
return -EINVAL;
switch (rate) {
case 8000:
case 11025:
case 12000:
case 16000:
case 22050:
case 24000:
case 32000:
case 44100:
case 48000:
switch (fs) {
case 256:
clk_mode |= (0x0 << 0);
break;
case 384:
clk_mode |= (0x2 << 0);
break;
case 512:
clk_mode |= (0x3 << 0);
break;
default:
return -EINVAL;
}
break;
case 64000:
case 88200:
case 96000:
if (fs == 256)
clk_mode |= (0x1 << 0);
else
return -EINVAL;
break;
case 176400:
case 192000:
if (fs == 128)
clk_mode |= (0x4 << 0);
else
return -EINVAL;
break;
default:
return -EINVAL;
}
snd_soc_component_update_bits(component, SYS_CLK, FS_MASK, clk_mode);
snd_soc_component_update_bits(component, AU_IFF2,
is_play ? DIDL_MASK : DODL_MASK, dai_ctrl);
if (is_play) {
ak4619->playback_rate = rate;
ak4619_set_deemph(component);
}
return 0;
}
static int ak4619_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
struct snd_soc_component *component = dai->component;
u8 dai_fmt1 = 0;
u8 dai_fmt2 = 0;
/* Set clock normal/inverted */
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
break;
case SND_SOC_DAIFMT_IB_NF:
dai_fmt1 |= BCKP;
break;
case SND_SOC_DAIFMT_NB_IF:
case SND_SOC_DAIFMT_IB_IF:
default:
return -EINVAL;
}
/* Only Stereo modes are supported */
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
dai_fmt1 |= DCF_STEREO_I2S;
break;
case SND_SOC_DAIFMT_LEFT_J:
dai_fmt1 |= DCF_STEREO_MSB;
break;
case SND_SOC_DAIFMT_DSP_A: /* L data MSB after FRM LRC */
dai_fmt1 |= DCF_PCM_SF;
dai_fmt2 |= SLOT;
break;
case SND_SOC_DAIFMT_DSP_B: /* L data MSB during FRM LRC */
dai_fmt1 |= DCF_PCM_LF;
dai_fmt2 |= SLOT;
break;
default:
return -EINVAL;
}
/* Only slave mode is support */
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBC_CFC:
break;
default:
return -EINVAL;
}
/* By default only 64 BICK per LRCLK is supported */
dai_fmt1 |= DSL_32;
snd_soc_component_update_bits(component, AU_IFF1, DCF_MASK |
DSL_MASK | BCKP, dai_fmt1);
snd_soc_component_update_bits(component, AU_IFF2, SLOT, dai_fmt2);
return 0;
}
static int ak4619_dai_set_sysclk(struct snd_soc_dai *codec_dai,
int clk_id, unsigned int freq, int dir)
{
struct snd_soc_component *component = codec_dai->component;
struct ak4619_priv *ak4619 = snd_soc_component_get_drvdata(component);
ak4619->sysclk = freq;
return 0;
}
static int ak4619_dai_mute(struct snd_soc_dai *dai, int mute, int direction)
{
struct snd_soc_component *component = dai->component;
snd_soc_component_update_bits(component, DAC_MF, DA1MUTE_EN, mute ? DA1MUTE_EN : 0);
snd_soc_component_update_bits(component, DAC_MF, DA2MUTE_EN, mute ? DA2MUTE_EN : 0);
return 0;
}
static void ak4619_hw_constraints(struct ak4619_priv *ak4619,
struct snd_pcm_runtime *runtime)
{
struct snd_pcm_hw_constraint_list *constraint = &ak4619->constraint;
int ak4619_rate_mask = 0;
unsigned int fs;
int i;
static const unsigned int ak4619_sr[] = {
8000,
11025,
12000,
16000,
22050,
24000,
32000,
44100,
48000,
64000,
88200,
96000,
176400,
192000,
};
/*
* [8kHz - 48kHz] : 256fs, 384fs or 512fs
* [64kHz - 96kHz] : 256fs
* [176.4kHz, 192kHz] : 128fs
*/
for (i = 0; i < ARRAY_SIZE(ak4619_sr); i++) {
fs = ak4619->sysclk / ak4619_sr[i];
switch (fs) {
case 512:
case 384:
case 256:
ak4619_rate_mask |= (1 << i);
break;
case 128:
switch (i) {
case (ARRAY_SIZE(ak4619_sr) - 1):
case (ARRAY_SIZE(ak4619_sr) - 2):
ak4619_rate_mask |= (1 << i);
break;
default:
break;
}
break;
default:
break;
}
}
constraint->list = ak4619_sr;
constraint->mask = ak4619_rate_mask;
constraint->count = ARRAY_SIZE(ak4619_sr);
snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, constraint);
};
#define PLAYBACK_MODE 0
#define CAPTURE_MODE 1
static int ak4619_dai_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_soc_component *component = dai->component;
struct ak4619_priv *ak4619 = snd_soc_component_get_drvdata(component);
ak4619_hw_constraints(ak4619, substream->runtime);
return 0;
}
static u64 ak4619_dai_formats[] = {
/*
* Select below from Sound Card, not here
* SND_SOC_DAIFMT_CBC_CFC
* SND_SOC_DAIFMT_CBP_CFP
*/
/* First Priority */
SND_SOC_POSSIBLE_DAIFMT_I2S |
SND_SOC_POSSIBLE_DAIFMT_LEFT_J,
/* Second Priority */
SND_SOC_POSSIBLE_DAIFMT_DSP_A |
SND_SOC_POSSIBLE_DAIFMT_DSP_B,
};
static const struct snd_soc_dai_ops ak4619_dai_ops = {
.startup = ak4619_dai_startup,
.set_sysclk = ak4619_dai_set_sysclk,
.set_fmt = ak4619_dai_set_fmt,
.hw_params = ak4619_dai_hw_params,
.mute_stream = ak4619_dai_mute,
.auto_selectable_formats = ak4619_dai_formats,
.num_auto_selectable_formats = ARRAY_SIZE(ak4619_dai_formats),
};
static const struct snd_soc_component_driver soc_component_dev_ak4619 = {
.set_bias_level = ak4619_set_bias_level,
.controls = ak4619_snd_controls,
.num_controls = ARRAY_SIZE(ak4619_snd_controls),
.dapm_widgets = ak4619_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(ak4619_dapm_widgets),
.dapm_routes = ak4619_intercon,
.num_dapm_routes = ARRAY_SIZE(ak4619_intercon),
.idle_bias_on = 1,
.endianness = 1,
};
static const struct regmap_config ak4619_regmap_cfg = {
.reg_bits = 8,
.val_bits = 8,
.max_register = 0x14,
.reg_defaults = ak4619_reg_defaults,
.num_reg_defaults = ARRAY_SIZE(ak4619_reg_defaults),
.cache_type = REGCACHE_MAPLE,
};
static const struct of_device_id ak4619_of_match[] = {
{ .compatible = "asahi-kasei,ak4619", .data = &ak4619_regmap_cfg },
{},
};
MODULE_DEVICE_TABLE(of, ak4619_of_match);
static const struct i2c_device_id ak4619_i2c_id[] = {
{ "ak4619", (kernel_ulong_t)&ak4619_regmap_cfg },
{ }
};
MODULE_DEVICE_TABLE(i2c, ak4619_i2c_id);
#define AK4619_RATES SNDRV_PCM_RATE_8000_192000
#define AK4619_DAC_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
SNDRV_PCM_FMTBIT_S20_LE |\
SNDRV_PCM_FMTBIT_S24_LE |\
SNDRV_PCM_FMTBIT_S32_LE)
#define AK4619_ADC_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
SNDRV_PCM_FMTBIT_S20_LE |\
SNDRV_PCM_FMTBIT_S24_LE)
static struct snd_soc_dai_driver ak4619_dai = {
.name = "ak4619-hifi",
.playback = {
.stream_name = "Playback",
.channels_min = 1,
.channels_max = 2,
.rates = AK4619_RATES,
.formats = AK4619_DAC_FORMATS,
},
.capture = {
.stream_name = "Capture",
.channels_min = 1,
.channels_max = 2,
.rates = AK4619_RATES,
.formats = AK4619_ADC_FORMATS,
},
.ops = &ak4619_dai_ops,
.symmetric_rate = 1,
};
static int ak4619_i2c_probe(struct i2c_client *i2c)
{
struct device *dev = &i2c->dev;
struct ak4619_priv *ak4619;
int ret;
ak4619 = devm_kzalloc(dev, sizeof(*ak4619), GFP_KERNEL);
if (!ak4619)
return -ENOMEM;
i2c_set_clientdata(i2c, ak4619);
ak4619->regmap = devm_regmap_init_i2c(i2c, &ak4619_regmap_cfg);
if (IS_ERR(ak4619->regmap)) {
ret = PTR_ERR(ak4619->regmap);
dev_err(dev, "regmap_init() failed: %d\n", ret);
return ret;
}
ret = devm_snd_soc_register_component(dev, &soc_component_dev_ak4619,
&ak4619_dai, 1);
if (ret < 0) {
dev_err(dev, "Failed to register ak4619 component: %d\n",
ret);
return ret;
}
return 0;
}
static struct i2c_driver ak4619_i2c_driver = {
.driver = {
.name = "ak4619-codec",
.of_match_table = ak4619_of_match,
},
.probe = ak4619_i2c_probe,
.id_table = ak4619_i2c_id,
};
module_i2c_driver(ak4619_i2c_driver);
MODULE_DESCRIPTION("SoC AK4619 driver");
MODULE_AUTHOR("Khanh Le <[email protected]>");
MODULE_LICENSE("GPL v2");
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