1*ca2cd6bcSanish kumar /* 2*ca2cd6bcSanish kumar * max98371.c -- ALSA SoC Stereo MAX98371 driver 3*ca2cd6bcSanish kumar * 4*ca2cd6bcSanish kumar * Copyright 2015-16 Maxim Integrated Products 5*ca2cd6bcSanish kumar * 6*ca2cd6bcSanish kumar * This program is free software; you can redistribute it and/or modify 7*ca2cd6bcSanish kumar * it under the terms of the GNU General Public License version 2 as 8*ca2cd6bcSanish kumar * published by the Free Software Foundation. 9*ca2cd6bcSanish kumar */ 10*ca2cd6bcSanish kumar 11*ca2cd6bcSanish kumar #include <linux/i2c.h> 12*ca2cd6bcSanish kumar #include <linux/module.h> 13*ca2cd6bcSanish kumar #include <linux/regmap.h> 14*ca2cd6bcSanish kumar #include <linux/slab.h> 15*ca2cd6bcSanish kumar #include <sound/pcm.h> 16*ca2cd6bcSanish kumar #include <sound/pcm_params.h> 17*ca2cd6bcSanish kumar #include <sound/soc.h> 18*ca2cd6bcSanish kumar #include <sound/tlv.h> 19*ca2cd6bcSanish kumar #include "max98371.h" 20*ca2cd6bcSanish kumar 21*ca2cd6bcSanish kumar static const char *const monomix_text[] = { 22*ca2cd6bcSanish kumar "Left", "Right", "LeftRightDiv2", 23*ca2cd6bcSanish kumar }; 24*ca2cd6bcSanish kumar 25*ca2cd6bcSanish kumar static const char *const hpf_cutoff_txt[] = { 26*ca2cd6bcSanish kumar "Disable", "DC Block", "50Hz", 27*ca2cd6bcSanish kumar "100Hz", "200Hz", "400Hz", "800Hz", 28*ca2cd6bcSanish kumar }; 29*ca2cd6bcSanish kumar 30*ca2cd6bcSanish kumar static SOC_ENUM_SINGLE_DECL(max98371_monomix, MAX98371_MONOMIX_CFG, 0, 31*ca2cd6bcSanish kumar monomix_text); 32*ca2cd6bcSanish kumar 33*ca2cd6bcSanish kumar static SOC_ENUM_SINGLE_DECL(max98371_hpf_cutoff, MAX98371_HPF, 0, 34*ca2cd6bcSanish kumar hpf_cutoff_txt); 35*ca2cd6bcSanish kumar 36*ca2cd6bcSanish kumar static const DECLARE_TLV_DB_RANGE(max98371_dht_min_gain, 37*ca2cd6bcSanish kumar 0, 1, TLV_DB_SCALE_ITEM(537, 66, 0), 38*ca2cd6bcSanish kumar 2, 3, TLV_DB_SCALE_ITEM(677, 82, 0), 39*ca2cd6bcSanish kumar 4, 5, TLV_DB_SCALE_ITEM(852, 104, 0), 40*ca2cd6bcSanish kumar 6, 7, TLV_DB_SCALE_ITEM(1072, 131, 0), 41*ca2cd6bcSanish kumar 8, 9, TLV_DB_SCALE_ITEM(1350, 165, 0), 42*ca2cd6bcSanish kumar 10, 11, TLV_DB_SCALE_ITEM(1699, 101, 0), 43*ca2cd6bcSanish kumar ); 44*ca2cd6bcSanish kumar 45*ca2cd6bcSanish kumar static const DECLARE_TLV_DB_RANGE(max98371_dht_max_gain, 46*ca2cd6bcSanish kumar 0, 1, TLV_DB_SCALE_ITEM(537, 66, 0), 47*ca2cd6bcSanish kumar 2, 3, TLV_DB_SCALE_ITEM(677, 82, 0), 48*ca2cd6bcSanish kumar 4, 5, TLV_DB_SCALE_ITEM(852, 104, 0), 49*ca2cd6bcSanish kumar 6, 7, TLV_DB_SCALE_ITEM(1072, 131, 0), 50*ca2cd6bcSanish kumar 8, 9, TLV_DB_SCALE_ITEM(1350, 165, 0), 51*ca2cd6bcSanish kumar 10, 11, TLV_DB_SCALE_ITEM(1699, 208, 0), 52*ca2cd6bcSanish kumar ); 53*ca2cd6bcSanish kumar 54*ca2cd6bcSanish kumar static const DECLARE_TLV_DB_RANGE(max98371_dht_rot_gain, 55*ca2cd6bcSanish kumar 0, 1, TLV_DB_SCALE_ITEM(-50, -50, 0), 56*ca2cd6bcSanish kumar 2, 6, TLV_DB_SCALE_ITEM(-100, -100, 0), 57*ca2cd6bcSanish kumar 7, 8, TLV_DB_SCALE_ITEM(-800, -200, 0), 58*ca2cd6bcSanish kumar 9, 11, TLV_DB_SCALE_ITEM(-1200, -300, 0), 59*ca2cd6bcSanish kumar 12, 13, TLV_DB_SCALE_ITEM(-2000, -200, 0), 60*ca2cd6bcSanish kumar 14, 15, TLV_DB_SCALE_ITEM(-2500, -500, 0), 61*ca2cd6bcSanish kumar ); 62*ca2cd6bcSanish kumar 63*ca2cd6bcSanish kumar static const struct reg_default max98371_reg[] = { 64*ca2cd6bcSanish kumar { 0x01, 0x00 }, 65*ca2cd6bcSanish kumar { 0x02, 0x00 }, 66*ca2cd6bcSanish kumar { 0x03, 0x00 }, 67*ca2cd6bcSanish kumar { 0x04, 0x00 }, 68*ca2cd6bcSanish kumar { 0x05, 0x00 }, 69*ca2cd6bcSanish kumar { 0x06, 0x00 }, 70*ca2cd6bcSanish kumar { 0x07, 0x00 }, 71*ca2cd6bcSanish kumar { 0x08, 0x00 }, 72*ca2cd6bcSanish kumar { 0x09, 0x00 }, 73*ca2cd6bcSanish kumar { 0x0A, 0x00 }, 74*ca2cd6bcSanish kumar { 0x10, 0x06 }, 75*ca2cd6bcSanish kumar { 0x11, 0x08 }, 76*ca2cd6bcSanish kumar { 0x14, 0x80 }, 77*ca2cd6bcSanish kumar { 0x15, 0x00 }, 78*ca2cd6bcSanish kumar { 0x16, 0x00 }, 79*ca2cd6bcSanish kumar { 0x18, 0x00 }, 80*ca2cd6bcSanish kumar { 0x19, 0x00 }, 81*ca2cd6bcSanish kumar { 0x1C, 0x00 }, 82*ca2cd6bcSanish kumar { 0x1D, 0x00 }, 83*ca2cd6bcSanish kumar { 0x1E, 0x00 }, 84*ca2cd6bcSanish kumar { 0x1F, 0x00 }, 85*ca2cd6bcSanish kumar { 0x20, 0x00 }, 86*ca2cd6bcSanish kumar { 0x21, 0x00 }, 87*ca2cd6bcSanish kumar { 0x22, 0x00 }, 88*ca2cd6bcSanish kumar { 0x23, 0x00 }, 89*ca2cd6bcSanish kumar { 0x24, 0x00 }, 90*ca2cd6bcSanish kumar { 0x25, 0x00 }, 91*ca2cd6bcSanish kumar { 0x26, 0x00 }, 92*ca2cd6bcSanish kumar { 0x27, 0x00 }, 93*ca2cd6bcSanish kumar { 0x28, 0x00 }, 94*ca2cd6bcSanish kumar { 0x29, 0x00 }, 95*ca2cd6bcSanish kumar { 0x2A, 0x00 }, 96*ca2cd6bcSanish kumar { 0x2B, 0x00 }, 97*ca2cd6bcSanish kumar { 0x2C, 0x00 }, 98*ca2cd6bcSanish kumar { 0x2D, 0x00 }, 99*ca2cd6bcSanish kumar { 0x2E, 0x0B }, 100*ca2cd6bcSanish kumar { 0x31, 0x00 }, 101*ca2cd6bcSanish kumar { 0x32, 0x18 }, 102*ca2cd6bcSanish kumar { 0x33, 0x00 }, 103*ca2cd6bcSanish kumar { 0x34, 0x00 }, 104*ca2cd6bcSanish kumar { 0x36, 0x00 }, 105*ca2cd6bcSanish kumar { 0x37, 0x00 }, 106*ca2cd6bcSanish kumar { 0x38, 0x00 }, 107*ca2cd6bcSanish kumar { 0x39, 0x00 }, 108*ca2cd6bcSanish kumar { 0x3A, 0x00 }, 109*ca2cd6bcSanish kumar { 0x3B, 0x00 }, 110*ca2cd6bcSanish kumar { 0x3B, 0x00 }, 111*ca2cd6bcSanish kumar { 0x3C, 0x00 }, 112*ca2cd6bcSanish kumar { 0x3D, 0x00 }, 113*ca2cd6bcSanish kumar { 0x3E, 0x00 }, 114*ca2cd6bcSanish kumar { 0x3F, 0x00 }, 115*ca2cd6bcSanish kumar { 0x40, 0x00 }, 116*ca2cd6bcSanish kumar { 0x41, 0x00 }, 117*ca2cd6bcSanish kumar { 0x42, 0x00 }, 118*ca2cd6bcSanish kumar { 0x43, 0x00 }, 119*ca2cd6bcSanish kumar { 0x4A, 0x00 }, 120*ca2cd6bcSanish kumar { 0x4B, 0x00 }, 121*ca2cd6bcSanish kumar { 0x4C, 0x00 }, 122*ca2cd6bcSanish kumar { 0x4D, 0x00 }, 123*ca2cd6bcSanish kumar { 0x4E, 0x00 }, 124*ca2cd6bcSanish kumar { 0x50, 0x00 }, 125*ca2cd6bcSanish kumar { 0x51, 0x00 }, 126*ca2cd6bcSanish kumar { 0x55, 0x00 }, 127*ca2cd6bcSanish kumar { 0x58, 0x00 }, 128*ca2cd6bcSanish kumar { 0x59, 0x00 }, 129*ca2cd6bcSanish kumar { 0x5C, 0x00 }, 130*ca2cd6bcSanish kumar { 0xFF, 0x43 }, 131*ca2cd6bcSanish kumar }; 132*ca2cd6bcSanish kumar 133*ca2cd6bcSanish kumar static bool max98371_volatile_register(struct device *dev, unsigned int reg) 134*ca2cd6bcSanish kumar { 135*ca2cd6bcSanish kumar switch (reg) { 136*ca2cd6bcSanish kumar case MAX98371_IRQ_CLEAR1: 137*ca2cd6bcSanish kumar case MAX98371_IRQ_CLEAR2: 138*ca2cd6bcSanish kumar case MAX98371_IRQ_CLEAR3: 139*ca2cd6bcSanish kumar case MAX98371_VERSION: 140*ca2cd6bcSanish kumar return true; 141*ca2cd6bcSanish kumar default: 142*ca2cd6bcSanish kumar return false; 143*ca2cd6bcSanish kumar } 144*ca2cd6bcSanish kumar } 145*ca2cd6bcSanish kumar 146*ca2cd6bcSanish kumar static bool max98371_readable_register(struct device *dev, unsigned int reg) 147*ca2cd6bcSanish kumar { 148*ca2cd6bcSanish kumar switch (reg) { 149*ca2cd6bcSanish kumar case MAX98371_SOFT_RESET: 150*ca2cd6bcSanish kumar return false; 151*ca2cd6bcSanish kumar default: 152*ca2cd6bcSanish kumar return true; 153*ca2cd6bcSanish kumar } 154*ca2cd6bcSanish kumar }; 155*ca2cd6bcSanish kumar 156*ca2cd6bcSanish kumar static const DECLARE_TLV_DB_RANGE(max98371_gain_tlv, 157*ca2cd6bcSanish kumar 0, 7, TLV_DB_SCALE_ITEM(0, 50, 0), 158*ca2cd6bcSanish kumar 8, 10, TLV_DB_SCALE_ITEM(400, 100, 0) 159*ca2cd6bcSanish kumar ); 160*ca2cd6bcSanish kumar 161*ca2cd6bcSanish kumar static const DECLARE_TLV_DB_RANGE(max98371_noload_gain_tlv, 162*ca2cd6bcSanish kumar 0, 11, TLV_DB_SCALE_ITEM(950, 100, 0), 163*ca2cd6bcSanish kumar ); 164*ca2cd6bcSanish kumar 165*ca2cd6bcSanish kumar static const DECLARE_TLV_DB_SCALE(digital_tlv, -6300, 50, 1); 166*ca2cd6bcSanish kumar 167*ca2cd6bcSanish kumar static const struct snd_kcontrol_new max98371_snd_controls[] = { 168*ca2cd6bcSanish kumar SOC_SINGLE_TLV("Speaker Volume", MAX98371_GAIN, 169*ca2cd6bcSanish kumar MAX98371_GAIN_SHIFT, (1<<MAX98371_GAIN_WIDTH)-1, 0, 170*ca2cd6bcSanish kumar max98371_gain_tlv), 171*ca2cd6bcSanish kumar SOC_SINGLE_TLV("Digital Volume", MAX98371_DIGITAL_GAIN, 0, 172*ca2cd6bcSanish kumar (1<<MAX98371_DIGITAL_GAIN_WIDTH)-1, 1, digital_tlv), 173*ca2cd6bcSanish kumar SOC_SINGLE_TLV("Speaker DHT Max Volume", MAX98371_GAIN, 174*ca2cd6bcSanish kumar 0, (1<<MAX98371_DHT_MAX_WIDTH)-1, 0, 175*ca2cd6bcSanish kumar max98371_dht_max_gain), 176*ca2cd6bcSanish kumar SOC_SINGLE_TLV("Speaker DHT Min Volume", MAX98371_DHT_GAIN, 177*ca2cd6bcSanish kumar 0, (1<<MAX98371_DHT_GAIN_WIDTH)-1, 0, 178*ca2cd6bcSanish kumar max98371_dht_min_gain), 179*ca2cd6bcSanish kumar SOC_SINGLE_TLV("Speaker DHT Rotation Volume", MAX98371_DHT_GAIN, 180*ca2cd6bcSanish kumar 0, (1<<MAX98371_DHT_ROT_WIDTH)-1, 0, 181*ca2cd6bcSanish kumar max98371_dht_rot_gain), 182*ca2cd6bcSanish kumar SOC_SINGLE("DHT Attack Step", MAX98371_DHT, MAX98371_DHT_STEP, 3, 0), 183*ca2cd6bcSanish kumar SOC_SINGLE("DHT Attack Rate", MAX98371_DHT, 0, 7, 0), 184*ca2cd6bcSanish kumar SOC_ENUM("Monomix Select", max98371_monomix), 185*ca2cd6bcSanish kumar SOC_ENUM("HPF Cutoff", max98371_hpf_cutoff), 186*ca2cd6bcSanish kumar }; 187*ca2cd6bcSanish kumar 188*ca2cd6bcSanish kumar static int max98371_dai_set_fmt(struct snd_soc_dai *codec_dai, 189*ca2cd6bcSanish kumar unsigned int fmt) 190*ca2cd6bcSanish kumar { 191*ca2cd6bcSanish kumar struct snd_soc_codec *codec = codec_dai->codec; 192*ca2cd6bcSanish kumar struct max98371_priv *max98371 = snd_soc_codec_get_drvdata(codec); 193*ca2cd6bcSanish kumar unsigned int val = 0; 194*ca2cd6bcSanish kumar 195*ca2cd6bcSanish kumar switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 196*ca2cd6bcSanish kumar case SND_SOC_DAIFMT_CBS_CFS: 197*ca2cd6bcSanish kumar break; 198*ca2cd6bcSanish kumar default: 199*ca2cd6bcSanish kumar dev_err(codec->dev, "DAI clock mode unsupported"); 200*ca2cd6bcSanish kumar return -EINVAL; 201*ca2cd6bcSanish kumar } 202*ca2cd6bcSanish kumar 203*ca2cd6bcSanish kumar switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 204*ca2cd6bcSanish kumar case SND_SOC_DAIFMT_I2S: 205*ca2cd6bcSanish kumar val |= 0; 206*ca2cd6bcSanish kumar break; 207*ca2cd6bcSanish kumar case SND_SOC_DAIFMT_RIGHT_J: 208*ca2cd6bcSanish kumar val |= MAX98371_DAI_RIGHT; 209*ca2cd6bcSanish kumar break; 210*ca2cd6bcSanish kumar case SND_SOC_DAIFMT_LEFT_J: 211*ca2cd6bcSanish kumar val |= MAX98371_DAI_LEFT; 212*ca2cd6bcSanish kumar break; 213*ca2cd6bcSanish kumar default: 214*ca2cd6bcSanish kumar dev_err(codec->dev, "DAI wrong mode unsupported"); 215*ca2cd6bcSanish kumar return -EINVAL; 216*ca2cd6bcSanish kumar } 217*ca2cd6bcSanish kumar regmap_update_bits(max98371->regmap, MAX98371_FMT, 218*ca2cd6bcSanish kumar MAX98371_FMT_MODE_MASK, val); 219*ca2cd6bcSanish kumar return 0; 220*ca2cd6bcSanish kumar } 221*ca2cd6bcSanish kumar 222*ca2cd6bcSanish kumar static int max98371_dai_hw_params(struct snd_pcm_substream *substream, 223*ca2cd6bcSanish kumar struct snd_pcm_hw_params *params, 224*ca2cd6bcSanish kumar struct snd_soc_dai *dai) 225*ca2cd6bcSanish kumar { 226*ca2cd6bcSanish kumar struct snd_soc_codec *codec = dai->codec; 227*ca2cd6bcSanish kumar struct max98371_priv *max98371 = snd_soc_codec_get_drvdata(codec); 228*ca2cd6bcSanish kumar int blr_clk_ratio, ch_size, channels = params_channels(params); 229*ca2cd6bcSanish kumar int rate = params_rate(params); 230*ca2cd6bcSanish kumar 231*ca2cd6bcSanish kumar switch (params_format(params)) { 232*ca2cd6bcSanish kumar case SNDRV_PCM_FORMAT_S8: 233*ca2cd6bcSanish kumar regmap_update_bits(max98371->regmap, MAX98371_FMT, 234*ca2cd6bcSanish kumar MAX98371_FMT_MASK, MAX98371_DAI_CHANSZ_16); 235*ca2cd6bcSanish kumar ch_size = 8; 236*ca2cd6bcSanish kumar break; 237*ca2cd6bcSanish kumar case SNDRV_PCM_FORMAT_S16_LE: 238*ca2cd6bcSanish kumar regmap_update_bits(max98371->regmap, MAX98371_FMT, 239*ca2cd6bcSanish kumar MAX98371_FMT_MASK, MAX98371_DAI_CHANSZ_16); 240*ca2cd6bcSanish kumar ch_size = 16; 241*ca2cd6bcSanish kumar break; 242*ca2cd6bcSanish kumar case SNDRV_PCM_FORMAT_S24_LE: 243*ca2cd6bcSanish kumar regmap_update_bits(max98371->regmap, MAX98371_FMT, 244*ca2cd6bcSanish kumar MAX98371_FMT_MASK, MAX98371_DAI_CHANSZ_32); 245*ca2cd6bcSanish kumar ch_size = 24; 246*ca2cd6bcSanish kumar break; 247*ca2cd6bcSanish kumar case SNDRV_PCM_FORMAT_S32_LE: 248*ca2cd6bcSanish kumar regmap_update_bits(max98371->regmap, MAX98371_FMT, 249*ca2cd6bcSanish kumar MAX98371_FMT_MASK, MAX98371_DAI_CHANSZ_32); 250*ca2cd6bcSanish kumar ch_size = 32; 251*ca2cd6bcSanish kumar break; 252*ca2cd6bcSanish kumar default: 253*ca2cd6bcSanish kumar return -EINVAL; 254*ca2cd6bcSanish kumar } 255*ca2cd6bcSanish kumar 256*ca2cd6bcSanish kumar /* BCLK/LRCLK ratio calculation */ 257*ca2cd6bcSanish kumar blr_clk_ratio = channels * ch_size; 258*ca2cd6bcSanish kumar switch (blr_clk_ratio) { 259*ca2cd6bcSanish kumar case 32: 260*ca2cd6bcSanish kumar regmap_update_bits(max98371->regmap, 261*ca2cd6bcSanish kumar MAX98371_DAI_CLK, 262*ca2cd6bcSanish kumar MAX98371_DAI_BSEL_MASK, MAX98371_DAI_BSEL_32); 263*ca2cd6bcSanish kumar break; 264*ca2cd6bcSanish kumar case 48: 265*ca2cd6bcSanish kumar regmap_update_bits(max98371->regmap, 266*ca2cd6bcSanish kumar MAX98371_DAI_CLK, 267*ca2cd6bcSanish kumar MAX98371_DAI_BSEL_MASK, MAX98371_DAI_BSEL_48); 268*ca2cd6bcSanish kumar break; 269*ca2cd6bcSanish kumar case 64: 270*ca2cd6bcSanish kumar regmap_update_bits(max98371->regmap, 271*ca2cd6bcSanish kumar MAX98371_DAI_CLK, 272*ca2cd6bcSanish kumar MAX98371_DAI_BSEL_MASK, MAX98371_DAI_BSEL_64); 273*ca2cd6bcSanish kumar break; 274*ca2cd6bcSanish kumar default: 275*ca2cd6bcSanish kumar return -EINVAL; 276*ca2cd6bcSanish kumar } 277*ca2cd6bcSanish kumar 278*ca2cd6bcSanish kumar switch (rate) { 279*ca2cd6bcSanish kumar case 32000: 280*ca2cd6bcSanish kumar regmap_update_bits(max98371->regmap, 281*ca2cd6bcSanish kumar MAX98371_SPK_SR, 282*ca2cd6bcSanish kumar MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_32); 283*ca2cd6bcSanish kumar break; 284*ca2cd6bcSanish kumar case 44100: 285*ca2cd6bcSanish kumar regmap_update_bits(max98371->regmap, 286*ca2cd6bcSanish kumar MAX98371_SPK_SR, 287*ca2cd6bcSanish kumar MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_44); 288*ca2cd6bcSanish kumar break; 289*ca2cd6bcSanish kumar case 48000: 290*ca2cd6bcSanish kumar regmap_update_bits(max98371->regmap, 291*ca2cd6bcSanish kumar MAX98371_SPK_SR, 292*ca2cd6bcSanish kumar MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_48); 293*ca2cd6bcSanish kumar break; 294*ca2cd6bcSanish kumar case 88200: 295*ca2cd6bcSanish kumar regmap_update_bits(max98371->regmap, 296*ca2cd6bcSanish kumar MAX98371_SPK_SR, 297*ca2cd6bcSanish kumar MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_88); 298*ca2cd6bcSanish kumar break; 299*ca2cd6bcSanish kumar case 96000: 300*ca2cd6bcSanish kumar regmap_update_bits(max98371->regmap, 301*ca2cd6bcSanish kumar MAX98371_SPK_SR, 302*ca2cd6bcSanish kumar MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_96); 303*ca2cd6bcSanish kumar break; 304*ca2cd6bcSanish kumar default: 305*ca2cd6bcSanish kumar return -EINVAL; 306*ca2cd6bcSanish kumar } 307*ca2cd6bcSanish kumar 308*ca2cd6bcSanish kumar /* enabling both the RX channels*/ 309*ca2cd6bcSanish kumar regmap_update_bits(max98371->regmap, MAX98371_MONOMIX_SRC, 310*ca2cd6bcSanish kumar MAX98371_MONOMIX_SRC_MASK, MONOMIX_RX_0_1); 311*ca2cd6bcSanish kumar regmap_update_bits(max98371->regmap, MAX98371_DAI_CHANNEL, 312*ca2cd6bcSanish kumar MAX98371_CHANNEL_MASK, MAX98371_CHANNEL_MASK); 313*ca2cd6bcSanish kumar return 0; 314*ca2cd6bcSanish kumar } 315*ca2cd6bcSanish kumar 316*ca2cd6bcSanish kumar static const struct snd_soc_dapm_widget max98371_dapm_widgets[] = { 317*ca2cd6bcSanish kumar SND_SOC_DAPM_DAC("DAC", NULL, MAX98371_SPK_ENABLE, 0, 0), 318*ca2cd6bcSanish kumar SND_SOC_DAPM_SUPPLY("Global Enable", MAX98371_GLOBAL_ENABLE, 319*ca2cd6bcSanish kumar 0, 0, NULL, 0), 320*ca2cd6bcSanish kumar SND_SOC_DAPM_OUTPUT("SPK_OUT"), 321*ca2cd6bcSanish kumar }; 322*ca2cd6bcSanish kumar 323*ca2cd6bcSanish kumar static const struct snd_soc_dapm_route max98371_audio_map[] = { 324*ca2cd6bcSanish kumar {"DAC", NULL, "HiFi Playback"}, 325*ca2cd6bcSanish kumar {"SPK_OUT", NULL, "DAC"}, 326*ca2cd6bcSanish kumar {"SPK_OUT", NULL, "Global Enable"}, 327*ca2cd6bcSanish kumar }; 328*ca2cd6bcSanish kumar 329*ca2cd6bcSanish kumar #define MAX98371_RATES SNDRV_PCM_RATE_8000_48000 330*ca2cd6bcSanish kumar #define MAX98371_FORMATS (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_BE | \ 331*ca2cd6bcSanish kumar SNDRV_PCM_FMTBIT_S24_BE | SNDRV_PCM_FMTBIT_S32_BE) 332*ca2cd6bcSanish kumar 333*ca2cd6bcSanish kumar static const struct snd_soc_dai_ops max98371_dai_ops = { 334*ca2cd6bcSanish kumar .set_fmt = max98371_dai_set_fmt, 335*ca2cd6bcSanish kumar .hw_params = max98371_dai_hw_params, 336*ca2cd6bcSanish kumar }; 337*ca2cd6bcSanish kumar 338*ca2cd6bcSanish kumar static struct snd_soc_dai_driver max98371_dai[] = { 339*ca2cd6bcSanish kumar { 340*ca2cd6bcSanish kumar .name = "max98371-aif1", 341*ca2cd6bcSanish kumar .playback = { 342*ca2cd6bcSanish kumar .stream_name = "HiFi Playback", 343*ca2cd6bcSanish kumar .channels_min = 1, 344*ca2cd6bcSanish kumar .channels_max = 2, 345*ca2cd6bcSanish kumar .rates = SNDRV_PCM_RATE_8000_48000, 346*ca2cd6bcSanish kumar .formats = MAX98371_FORMATS, 347*ca2cd6bcSanish kumar }, 348*ca2cd6bcSanish kumar .ops = &max98371_dai_ops, 349*ca2cd6bcSanish kumar } 350*ca2cd6bcSanish kumar }; 351*ca2cd6bcSanish kumar 352*ca2cd6bcSanish kumar static const struct snd_soc_codec_driver max98371_codec = { 353*ca2cd6bcSanish kumar .controls = max98371_snd_controls, 354*ca2cd6bcSanish kumar .num_controls = ARRAY_SIZE(max98371_snd_controls), 355*ca2cd6bcSanish kumar .dapm_routes = max98371_audio_map, 356*ca2cd6bcSanish kumar .num_dapm_routes = ARRAY_SIZE(max98371_audio_map), 357*ca2cd6bcSanish kumar .dapm_widgets = max98371_dapm_widgets, 358*ca2cd6bcSanish kumar .num_dapm_widgets = ARRAY_SIZE(max98371_dapm_widgets), 359*ca2cd6bcSanish kumar }; 360*ca2cd6bcSanish kumar 361*ca2cd6bcSanish kumar static const struct regmap_config max98371_regmap = { 362*ca2cd6bcSanish kumar .reg_bits = 8, 363*ca2cd6bcSanish kumar .val_bits = 8, 364*ca2cd6bcSanish kumar .max_register = MAX98371_VERSION, 365*ca2cd6bcSanish kumar .reg_defaults = max98371_reg, 366*ca2cd6bcSanish kumar .num_reg_defaults = ARRAY_SIZE(max98371_reg), 367*ca2cd6bcSanish kumar .volatile_reg = max98371_volatile_register, 368*ca2cd6bcSanish kumar .readable_reg = max98371_readable_register, 369*ca2cd6bcSanish kumar .cache_type = REGCACHE_RBTREE, 370*ca2cd6bcSanish kumar }; 371*ca2cd6bcSanish kumar 372*ca2cd6bcSanish kumar static int max98371_i2c_probe(struct i2c_client *i2c, 373*ca2cd6bcSanish kumar const struct i2c_device_id *id) 374*ca2cd6bcSanish kumar { 375*ca2cd6bcSanish kumar struct max98371_priv *max98371; 376*ca2cd6bcSanish kumar int ret, reg; 377*ca2cd6bcSanish kumar 378*ca2cd6bcSanish kumar max98371 = devm_kzalloc(&i2c->dev, 379*ca2cd6bcSanish kumar sizeof(*max98371), GFP_KERNEL); 380*ca2cd6bcSanish kumar if (!max98371) 381*ca2cd6bcSanish kumar return -ENOMEM; 382*ca2cd6bcSanish kumar 383*ca2cd6bcSanish kumar i2c_set_clientdata(i2c, max98371); 384*ca2cd6bcSanish kumar max98371->regmap = devm_regmap_init_i2c(i2c, &max98371_regmap); 385*ca2cd6bcSanish kumar if (IS_ERR(max98371->regmap)) { 386*ca2cd6bcSanish kumar ret = PTR_ERR(max98371->regmap); 387*ca2cd6bcSanish kumar dev_err(&i2c->dev, 388*ca2cd6bcSanish kumar "Failed to allocate regmap: %d\n", ret); 389*ca2cd6bcSanish kumar return ret; 390*ca2cd6bcSanish kumar } 391*ca2cd6bcSanish kumar 392*ca2cd6bcSanish kumar ret = regmap_read(max98371->regmap, MAX98371_VERSION, ®); 393*ca2cd6bcSanish kumar if (ret < 0) { 394*ca2cd6bcSanish kumar dev_info(&i2c->dev, "device error %d\n", ret); 395*ca2cd6bcSanish kumar return ret; 396*ca2cd6bcSanish kumar } 397*ca2cd6bcSanish kumar dev_info(&i2c->dev, "device version %x\n", reg); 398*ca2cd6bcSanish kumar 399*ca2cd6bcSanish kumar ret = snd_soc_register_codec(&i2c->dev, &max98371_codec, 400*ca2cd6bcSanish kumar max98371_dai, ARRAY_SIZE(max98371_dai)); 401*ca2cd6bcSanish kumar if (ret < 0) { 402*ca2cd6bcSanish kumar dev_err(&i2c->dev, "Failed to register codec: %d\n", ret); 403*ca2cd6bcSanish kumar return ret; 404*ca2cd6bcSanish kumar } 405*ca2cd6bcSanish kumar return ret; 406*ca2cd6bcSanish kumar } 407*ca2cd6bcSanish kumar 408*ca2cd6bcSanish kumar static int max98371_i2c_remove(struct i2c_client *client) 409*ca2cd6bcSanish kumar { 410*ca2cd6bcSanish kumar snd_soc_unregister_codec(&client->dev); 411*ca2cd6bcSanish kumar return 0; 412*ca2cd6bcSanish kumar } 413*ca2cd6bcSanish kumar 414*ca2cd6bcSanish kumar static const struct i2c_device_id max98371_i2c_id[] = { 415*ca2cd6bcSanish kumar { "max98371", 0 }, 416*ca2cd6bcSanish kumar }; 417*ca2cd6bcSanish kumar 418*ca2cd6bcSanish kumar MODULE_DEVICE_TABLE(i2c, max98371_i2c_id); 419*ca2cd6bcSanish kumar 420*ca2cd6bcSanish kumar static const struct of_device_id max98371_of_match[] = { 421*ca2cd6bcSanish kumar { .compatible = "maxim,max98371", }, 422*ca2cd6bcSanish kumar { } 423*ca2cd6bcSanish kumar }; 424*ca2cd6bcSanish kumar MODULE_DEVICE_TABLE(of, max98371_of_match); 425*ca2cd6bcSanish kumar 426*ca2cd6bcSanish kumar static struct i2c_driver max98371_i2c_driver = { 427*ca2cd6bcSanish kumar .driver = { 428*ca2cd6bcSanish kumar .name = "max98371", 429*ca2cd6bcSanish kumar .owner = THIS_MODULE, 430*ca2cd6bcSanish kumar .pm = NULL, 431*ca2cd6bcSanish kumar .of_match_table = of_match_ptr(max98371_of_match), 432*ca2cd6bcSanish kumar }, 433*ca2cd6bcSanish kumar .probe = max98371_i2c_probe, 434*ca2cd6bcSanish kumar .remove = max98371_i2c_remove, 435*ca2cd6bcSanish kumar .id_table = max98371_i2c_id, 436*ca2cd6bcSanish kumar }; 437*ca2cd6bcSanish kumar 438*ca2cd6bcSanish kumar module_i2c_driver(max98371_i2c_driver); 439*ca2cd6bcSanish kumar 440*ca2cd6bcSanish kumar MODULE_AUTHOR("anish kumar <yesanishhere@gmail.com>"); 441*ca2cd6bcSanish kumar MODULE_DESCRIPTION("ALSA SoC MAX98371 driver"); 442*ca2cd6bcSanish kumar MODULE_LICENSE("GPL"); 443