--- /dev/null
+/*
+ * 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 <linux/of_gpio.h>
+#include <linux/regmap.h>
+
+#include "ak4497.h"
+
+//#define AK4497_DEBUG //used at debug mode
+
+/* AK4497 Codec Private Data */
+struct ak4497_priv {
+ struct i2c_client *i2c;
+ int fs1; /* Sampling Frequency */
+ int nBickFreq; /* 0: 48fs for 24bit, 1: 64fs or more for 32bit */
+ int nDSDSel;
+ int nTdmSds;
+ int pdn_gpio;
+ int mute_gpio;
+};
+
+/* 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)
+};
+
+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);
+ struct ak4497_priv *ak4497 = snd_soc_codec_get_drvdata(codec);
+
+ ucontrol->value.enumerated.item[0] = ak4497->nDSDSel;
+
+ 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);
+ struct ak4497_priv *ak4497 = snd_soc_codec_get_drvdata(codec);
+
+ ak4497->nDSDSel = ucontrol->value.enumerated.item[0];
+
+ if (ak4497->nDSDSel == 0) { /* 2.8224MHz */
+ snd_soc_update_bits(codec, AK4497_06_DSD1, 0x01, 0x00);
+ snd_soc_update_bits(codec, AK4497_09_DSD2, 0x01, 0x00);
+ } else if (ak4497->nDSDSel == 1) { /* 5.6448MHz */
+ snd_soc_update_bits(codec, AK4497_06_DSD1, 0x01, 0x01);
+ snd_soc_update_bits(codec, AK4497_09_DSD2, 0x01, 0x00);
+ } else { /* 11.2896MHz */
+ snd_soc_update_bits(codec, AK4497_06_DSD1, 0x01, 0x00);
+ snd_soc_update_bits(codec, AK4497_09_DSD2, 0x01, 0x01);
+ }
+
+ 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);
+ int nADFSbit;
+
+ nADFSbit = snd_soc_read(codec, AK4497_15_DFSREAD);
+ 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, value;
+ int regs, rege;
+
+ nTestRegNo = currMode;
+
+ if (nTestRegNo == 0) {
+ regs = 0x00;
+ rege = 0x0B;
+ } else {
+ regs = 0x15;
+ rege = 0x15;
+ }
+
+ for (i = regs; i <= rege; i++) {
+ value = snd_soc_read(codec, i);
+ 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);
+
+ u8 dfs;
+ u8 dfs2;
+ int nfs1;
+
+ nfs1 = params_rate(params);
+ ak4497->fs1 = nfs1;
+
+ dfs = snd_soc_read(codec, AK4497_01_CONTROL2);
+ dfs &= ~AK4497_DFS;
+
+ dfs2 = snd_soc_read(codec, AK4497_05_CONTROL4);
+ dfs2 &= ~AK4497_DFS2;
+
+ switch (nfs1) {
+ 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 384000:
+ dfs |= AK4497_DFS_384KHZ;
+ dfs2 |= AK4497_DFS2_384KHZ;
+ break;
+ case 768000:
+ dfs |= AK4497_DFS_768KHZ;
+ dfs2 |= AK4497_DFS2_384KHZ;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ snd_soc_write(codec, AK4497_01_CONTROL2, dfs);
+ snd_soc_write(codec, AK4497_05_CONTROL4, dfs2);
+
+ 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);
+ u8 format;
+ u8 format2;
+
+ /* set master/slave audio interface */
+ format = snd_soc_read(codec, AK4497_00_CONTROL1);
+ format &= ~AK4497_DIF;
+
+ format2 = snd_soc_read(codec, AK4497_02_CONTROL3);
+ 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:
+ format |= AK4497_DIF_I2S_MODE;
+ if (ak4497->nBickFreq == 1)
+ format |= AK4497_DIF_32BIT_MODE;
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ format |= AK4497_DIF_MSB_MODE;
+ if (ak4497->nBickFreq == 1)
+ format |= AK4497_DIF_32BIT_MODE;
+ break;
+ case SND_SOC_DAIFMT_DSD:
+ 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 (ak4497->mute_gpio != -1)
+ gpio_set_value(ak4497->mute_gpio, 1);
+ } else { /* SMUTE: 0, NORMAL operation */
+
+ /* External Mute OFF */
+ if (ak4497->mute_gpio != -1)
+ gpio_set_value(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)
+
+
+static struct snd_soc_dai_ops ak4497_dai_ops = {
+ .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 = AK4497_RATES,
+ .formats = AK4497_FORMATS,
+ },
+ .ops = &ak4497_dai_ops,
+ },
+};
+
+static void ak4497_init_reg(struct snd_soc_codec *codec)
+{
+ struct ak4497_priv *ak4497 = snd_soc_codec_get_drvdata(codec);
+
+ if (ak4497->mute_gpio > 0)
+ gpio_set_value(ak4497->mute_gpio, 1); /* External Mute ON */
+
+ if (ak4497->pdn_gpio > 0) {
+ gpio_set_value(ak4497->pdn_gpio, 0);
+ usleep_range(1000, 2000);
+ gpio_set_value(ak4497->pdn_gpio, 1);
+ usleep_range(1000, 2000);
+ }
+
+ /* ak4497_set_bias_level(codec, SND_SOC_BIAS_STANDBY); */
+
+ /* SYNCE bit = 1 */
+ snd_soc_update_bits(codec, AK4497_07_CONTROL5, 0x01, 0x01);
+
+ /* HLOAD bit = 1, SC2 bit = 1 */
+ snd_soc_update_bits(codec, AK4497_08_SOUNDCONTROL, 0x0F, 0x0C);
+}
+
+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 (ak4497->pdn_gpio > 0) {
+ ret = gpio_request(ak4497->pdn_gpio, "ak4497 pdn");
+ gpio_direction_output(ak4497->pdn_gpio, 0);
+ }
+ if (ak4497->mute_gpio > 0) {
+ ret = gpio_request(ak4497->mute_gpio, "ak4497 mute");
+ gpio_direction_output(ak4497->mute_gpio, 0);
+ }
+
+ ak4497_init_reg(codec);
+
+ ak4497->fs1 = 48000;
+ ak4497->nBickFreq = 1;
+ ak4497->nDSDSel = 0;
+ 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 (ak4497->pdn_gpio > 0) {
+ gpio_set_value(ak4497->pdn_gpio, 0);
+ gpio_free(ak4497->pdn_gpio);
+ }
+ if (ak4497->mute_gpio > 0)
+ gpio_free(ak4497->mute_gpio);
+
+ return 0;
+}
+
+static int ak4497_suspend(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 (ak4497->pdn_gpio > 0)
+ gpio_set_value(ak4497->pdn_gpio, 0);
+
+ if (ak4497->mute_gpio > 0)
+ gpio_free(ak4497->mute_gpio);
+
+ return 0;
+}
+
+static int ak4497_resume(struct snd_soc_codec *codec)
+{
+ ak4497_init_reg(codec);
+
+ return 0;
+}
+
+struct snd_soc_codec_driver soc_codec_dev_ak4497 = {
+ .probe = ak4497_probe,
+ .remove = ak4497_remove,
+ .suspend = ak4497_suspend,
+ .resume = ak4497_resume,
+
+ .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;
+ struct regmap *regmap;
+ int ret = 0;
+
+ ak4497 = devm_kzalloc(&i2c->dev,
+ sizeof(struct ak4497_priv), GFP_KERNEL);
+ if (ak4497 == NULL)
+ return -ENOMEM;
+
+ regmap = devm_regmap_init_i2c(i2c, &ak4497_regmap);
+ if (IS_ERR(regmap))
+ return PTR_ERR(regmap);
+
+ i2c_set_clientdata(i2c, ak4497);
+ ak4497->i2c = i2c;
+
+ ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_ak4497,
+ &ak4497_dai[0], ARRAY_SIZE(ak4497_dai));
+ if (ret < 0)
+ kfree(ak4497);
+
+ return ret;
+}
+
+static int ak4497_i2c_remove(struct i2c_client *client)
+{
+ snd_soc_unregister_codec(&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),
+ },
+ .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");
projects / linux.git / commitdiff