--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * ak4619.c -- Asahi Kasei ALSA SoC Audio driver
+ *
+ * Copyright (C) 2023 Renesas Electronics Corporation
+ * Khanh Le <khanh.le.xr@renesas.com>
+ *
+ * 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 <khanh.le.xr@renesas.com>");
+MODULE_LICENSE("GPL v2");
projects / users / dwmw2 / linux.git / commitdiff