sound/soc/codecs/sta350.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Codec driver for ST STA350 2.1-channel high-efficiency digital audio system
   4  *
   5  * Copyright: 2014 Raumfeld GmbH
   6  * Author: Sven Brandau <info@brandau.biz>
   7  *
   8  * based on code from:
   9  *      Raumfeld GmbH
  10  *        Johannes Stezenbach <js@sig21.net>
  11  *      Wolfson Microelectronics PLC.
  12  *        Mark Brown <broonie@opensource.wolfsonmicro.com>
  13  *      Freescale Semiconductor, Inc.
  14  *        Timur Tabi <timur@freescale.com>
  15  */
  16
  17 #define pr_fmt(fmt) KBUILD_MODNAME ":%s:%d: " fmt, __func__, __LINE__
  18
  19 #include <linux/module.h>
  20 #include <linux/moduleparam.h>
  21 #include <linux/init.h>
  22 #include <linux/delay.h>
  23 #include <linux/pm.h>
  24 #include <linux/i2c.h>
  25 #include <linux/of_device.h>
  26 #include <linux/of_gpio.h>
  27 #include <linux/regmap.h>
  28 #include <linux/regulator/consumer.h>
  29 #include <linux/gpio/consumer.h>
  30 #include <linux/slab.h>
  31 #include <sound/core.h>
  32 #include <sound/pcm.h>
  33 #include <sound/pcm_params.h>
  34 #include <sound/soc.h>
  35 #include <sound/soc-dapm.h>
  36 #include <sound/initval.h>
  37 #include <sound/tlv.h>
  38
  39 #include <sound/sta350.h>
  40 #include "sta350.h"
  41
  42 #define STA350_RATES (SNDRV_PCM_RATE_32000 | \
  43                       SNDRV_PCM_RATE_44100 | \
  44                       SNDRV_PCM_RATE_48000 | \
  45                       SNDRV_PCM_RATE_88200 | \
  46                       SNDRV_PCM_RATE_96000 | \
  47                       SNDRV_PCM_RATE_176400 | \
  48                       SNDRV_PCM_RATE_192000)
  49
  50 #define STA350_FORMATS \
  51         (SNDRV_PCM_FMTBIT_S16_LE  | SNDRV_PCM_FMTBIT_S18_3LE | \
  52          SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_3LE | \
  53          SNDRV_PCM_FMTBIT_S24_LE  | SNDRV_PCM_FMTBIT_S32_LE)
  54
  55 /* Power-up register defaults */
  56 static const struct reg_default sta350_regs[] = {
  57         {  0x0, 0x63 },
  58         {  0x1, 0x80 },
  59         {  0x2, 0xdf },
  60         {  0x3, 0x40 },
  61         {  0x4, 0xc2 },
  62         {  0x5, 0x5c },
  63         {  0x6, 0x00 },
  64         {  0x7, 0xff },
  65         {  0x8, 0x60 },
  66         {  0x9, 0x60 },
  67         {  0xa, 0x60 },
  68         {  0xb, 0x00 },
  69         {  0xc, 0x00 },
  70         {  0xd, 0x00 },
  71         {  0xe, 0x00 },
  72         {  0xf, 0x40 },
  73         { 0x10, 0x80 },
  74         { 0x11, 0x77 },
  75         { 0x12, 0x6a },
  76         { 0x13, 0x69 },
  77         { 0x14, 0x6a },
  78         { 0x15, 0x69 },
  79         { 0x16, 0x00 },
  80         { 0x17, 0x00 },
  81         { 0x18, 0x00 },
  82         { 0x19, 0x00 },
  83         { 0x1a, 0x00 },
  84         { 0x1b, 0x00 },
  85         { 0x1c, 0x00 },
  86         { 0x1d, 0x00 },
  87         { 0x1e, 0x00 },
  88         { 0x1f, 0x00 },
  89         { 0x20, 0x00 },
  90         { 0x21, 0x00 },
  91         { 0x22, 0x00 },
  92         { 0x23, 0x00 },
  93         { 0x24, 0x00 },
  94         { 0x25, 0x00 },
  95         { 0x26, 0x00 },
  96         { 0x27, 0x2a },
  97         { 0x28, 0xc0 },
  98         { 0x29, 0xf3 },
  99         { 0x2a, 0x33 },
 100         { 0x2b, 0x00 },
 101         { 0x2c, 0x0c },
 102         { 0x31, 0x00 },
 103         { 0x36, 0x00 },
 104         { 0x37, 0x00 },
 105         { 0x38, 0x00 },
 106         { 0x39, 0x01 },
 107         { 0x3a, 0xee },
 108         { 0x3b, 0xff },
 109         { 0x3c, 0x7e },
 110         { 0x3d, 0xc0 },
 111         { 0x3e, 0x26 },
 112         { 0x3f, 0x00 },
 113         { 0x48, 0x00 },
 114         { 0x49, 0x00 },
 115         { 0x4a, 0x00 },
 116         { 0x4b, 0x04 },
 117         { 0x4c, 0x00 },
 118 };
 119
 120 static const struct regmap_range sta350_write_regs_range[] = {
 121         regmap_reg_range(STA350_CONFA,  STA350_AUTO2),
 122         regmap_reg_range(STA350_C1CFG,  STA350_FDRC2),
 123         regmap_reg_range(STA350_EQCFG,  STA350_EVOLRES),
 124         regmap_reg_range(STA350_NSHAPE, STA350_MISC2),
 125 };
 126
 127 static const struct regmap_range sta350_read_regs_range[] = {
 128         regmap_reg_range(STA350_CONFA,  STA350_AUTO2),
 129         regmap_reg_range(STA350_C1CFG,  STA350_STATUS),
 130         regmap_reg_range(STA350_EQCFG,  STA350_EVOLRES),
 131         regmap_reg_range(STA350_NSHAPE, STA350_MISC2),
 132 };
 133
 134 static const struct regmap_range sta350_volatile_regs_range[] = {
 135         regmap_reg_range(STA350_CFADDR2, STA350_CFUD),
 136         regmap_reg_range(STA350_STATUS,  STA350_STATUS),
 137 };
 138
 139 static const struct regmap_access_table sta350_write_regs = {
 140         .yes_ranges =   sta350_write_regs_range,
 141         .n_yes_ranges = ARRAY_SIZE(sta350_write_regs_range),
 142 };
 143
 144 static const struct regmap_access_table sta350_read_regs = {
 145         .yes_ranges =   sta350_read_regs_range,
 146         .n_yes_ranges = ARRAY_SIZE(sta350_read_regs_range),
 147 };
 148
 149 static const struct regmap_access_table sta350_volatile_regs = {
 150         .yes_ranges =   sta350_volatile_regs_range,
 151         .n_yes_ranges = ARRAY_SIZE(sta350_volatile_regs_range),
 152 };
 153
 154 /* regulator power supply names */
 155 static const char * const sta350_supply_names[] = {
 156         "vdd-dig",      /* digital supply, 3.3V */
 157         "vdd-pll",      /* pll supply, 3.3V */
 158         "vcc"           /* power amp supply, 5V - 26V */
 159 };
 160
 161 /* codec private data */
 162 struct sta350_priv {
 163         struct regmap *regmap;
 164         struct regulator_bulk_data supplies[ARRAY_SIZE(sta350_supply_names)];
 165         struct sta350_platform_data *pdata;
 166
 167         unsigned int mclk;
 168         unsigned int format;
 169
 170         u32 coef_shadow[STA350_COEF_COUNT];
 171         int shutdown;
 172
 173         struct gpio_desc *gpiod_nreset;
 174         struct gpio_desc *gpiod_power_down;
 175
 176         struct mutex coeff_lock;
 177 };
 178
 179 static const DECLARE_TLV_DB_SCALE(mvol_tlv, -12750, 50, 1);
 180 static const DECLARE_TLV_DB_SCALE(chvol_tlv, -7950, 50, 1);
 181 static const DECLARE_TLV_DB_SCALE(tone_tlv, -1200, 200, 0);
 182
 183 static const char * const sta350_drc_ac[] = {
 184         "Anti-Clipping", "Dynamic Range Compression"
 185 };
 186 static const char * const sta350_auto_gc_mode[] = {
 187         "User", "AC no clipping", "AC limited clipping (10%)",
 188         "DRC nighttime listening mode"
 189 };
 190 static const char * const sta350_auto_xo_mode[] = {
 191         "User", "80Hz", "100Hz", "120Hz", "140Hz", "160Hz", "180Hz",
 192         "200Hz", "220Hz", "240Hz", "260Hz", "280Hz", "300Hz", "320Hz",
 193         "340Hz", "360Hz"
 194 };
 195 static const char * const sta350_binary_output[] = {
 196         "FFX 3-state output - normal operation", "Binary output"
 197 };
 198 static const char * const sta350_limiter_select[] = {
 199         "Limiter Disabled", "Limiter #1", "Limiter #2"
 200 };
 201 static const char * const sta350_limiter_attack_rate[] = {
 202         "3.1584", "2.7072", "2.2560", "1.8048", "1.3536", "0.9024",
 203         "0.4512", "0.2256", "0.1504", "0.1123", "0.0902", "0.0752",
 204         "0.0645", "0.0564", "0.0501", "0.0451"
 205 };
 206 static const char * const sta350_limiter_release_rate[] = {
 207         "0.5116", "0.1370", "0.0744", "0.0499", "0.0360", "0.0299",
 208         "0.0264", "0.0208", "0.0198", "0.0172", "0.0147", "0.0137",
 209         "0.0134", "0.0117", "0.0110", "0.0104"
 210 };
 211 static const char * const sta350_noise_shaper_type[] = {
 212         "Third order", "Fourth order"
 213 };
 214
 215 static DECLARE_TLV_DB_RANGE(sta350_limiter_ac_attack_tlv,
 216         0, 7, TLV_DB_SCALE_ITEM(-1200, 200, 0),
 217         8, 16, TLV_DB_SCALE_ITEM(300, 100, 0),
 218 );
 219
 220 static DECLARE_TLV_DB_RANGE(sta350_limiter_ac_release_tlv,
 221         0, 0, TLV_DB_SCALE_ITEM(TLV_DB_GAIN_MUTE, 0, 0),
 222         1, 1, TLV_DB_SCALE_ITEM(-2900, 0, 0),
 223         2, 2, TLV_DB_SCALE_ITEM(-2000, 0, 0),
 224         3, 8, TLV_DB_SCALE_ITEM(-1400, 200, 0),
 225         8, 16, TLV_DB_SCALE_ITEM(-700, 100, 0),
 226 );
 227
 228 static DECLARE_TLV_DB_RANGE(sta350_limiter_drc_attack_tlv,
 229         0, 7, TLV_DB_SCALE_ITEM(-3100, 200, 0),
 230         8, 13, TLV_DB_SCALE_ITEM(-1600, 100, 0),
 231         14, 16, TLV_DB_SCALE_ITEM(-1000, 300, 0),
 232 );
 233
 234 static DECLARE_TLV_DB_RANGE(sta350_limiter_drc_release_tlv,
 235         0, 0, TLV_DB_SCALE_ITEM(TLV_DB_GAIN_MUTE, 0, 0),
 236         1, 2, TLV_DB_SCALE_ITEM(-3800, 200, 0),
 237         3, 4, TLV_DB_SCALE_ITEM(-3300, 200, 0),
 238         5, 12, TLV_DB_SCALE_ITEM(-3000, 200, 0),
 239         13, 16, TLV_DB_SCALE_ITEM(-1500, 300, 0),
 240 );
 241
 242 static SOC_ENUM_SINGLE_DECL(sta350_drc_ac_enum,
 243                             STA350_CONFD, STA350_CONFD_DRC_SHIFT,
 244                             sta350_drc_ac);
 245 static SOC_ENUM_SINGLE_DECL(sta350_noise_shaper_enum,
 246                             STA350_CONFE, STA350_CONFE_NSBW_SHIFT,
 247                             sta350_noise_shaper_type);
 248 static SOC_ENUM_SINGLE_DECL(sta350_auto_gc_enum,
 249                             STA350_AUTO1, STA350_AUTO1_AMGC_SHIFT,
 250                             sta350_auto_gc_mode);
 251 static SOC_ENUM_SINGLE_DECL(sta350_auto_xo_enum,
 252                             STA350_AUTO2, STA350_AUTO2_XO_SHIFT,
 253                             sta350_auto_xo_mode);
 254 static SOC_ENUM_SINGLE_DECL(sta350_binary_output_ch1_enum,
 255                             STA350_C1CFG, STA350_CxCFG_BO_SHIFT,
 256                             sta350_binary_output);
 257 static SOC_ENUM_SINGLE_DECL(sta350_binary_output_ch2_enum,
 258                             STA350_C2CFG, STA350_CxCFG_BO_SHIFT,
 259                             sta350_binary_output);
 260 static SOC_ENUM_SINGLE_DECL(sta350_binary_output_ch3_enum,
 261                             STA350_C3CFG, STA350_CxCFG_BO_SHIFT,
 262                             sta350_binary_output);
 263 static SOC_ENUM_SINGLE_DECL(sta350_limiter_ch1_enum,
 264                             STA350_C1CFG, STA350_CxCFG_LS_SHIFT,
 265                             sta350_limiter_select);
 266 static SOC_ENUM_SINGLE_DECL(sta350_limiter_ch2_enum,
 267                             STA350_C2CFG, STA350_CxCFG_LS_SHIFT,
 268                             sta350_limiter_select);
 269 static SOC_ENUM_SINGLE_DECL(sta350_limiter_ch3_enum,
 270                             STA350_C3CFG, STA350_CxCFG_LS_SHIFT,
 271                             sta350_limiter_select);
 272 static SOC_ENUM_SINGLE_DECL(sta350_limiter1_attack_rate_enum,
 273                             STA350_L1AR, STA350_LxA_SHIFT,
 274                             sta350_limiter_attack_rate);
 275 static SOC_ENUM_SINGLE_DECL(sta350_limiter2_attack_rate_enum,
 276                             STA350_L2AR, STA350_LxA_SHIFT,
 277                             sta350_limiter_attack_rate);
 278 static SOC_ENUM_SINGLE_DECL(sta350_limiter1_release_rate_enum,
 279                             STA350_L1AR, STA350_LxR_SHIFT,
 280                             sta350_limiter_release_rate);
 281 static SOC_ENUM_SINGLE_DECL(sta350_limiter2_release_rate_enum,
 282                             STA350_L2AR, STA350_LxR_SHIFT,
 283                             sta350_limiter_release_rate);
 284
 285 /*
 286  * byte array controls for setting biquad, mixer, scaling coefficients;
 287  * for biquads all five coefficients need to be set in one go,
 288  * mixer and pre/postscale coefs can be set individually;
 289  * each coef is 24bit, the bytes are ordered in the same way
 290  * as given in the STA350 data sheet (big endian; b1, b2, a1, a2, b0)
 291  */
 292
 293 static int sta350_coefficient_info(struct snd_kcontrol *kcontrol,
 294                                    struct snd_ctl_elem_info *uinfo)
 295 {
 296         int numcoef = kcontrol->private_value >> 16;
 297         uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
 298         uinfo->count = 3 * numcoef;
 299         return 0;
 300 }
 301
 302 static int sta350_coefficient_get(struct snd_kcontrol *kcontrol,
 303                                   struct snd_ctl_elem_value *ucontrol)
 304 {
 305         struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
 306         struct sta350_priv *sta350 = snd_soc_component_get_drvdata(component);
 307         int numcoef = kcontrol->private_value >> 16;
 308         int index = kcontrol->private_value & 0xffff;
 309         unsigned int cfud, val;
 310         int i, ret = 0;
 311
 312         mutex_lock(&sta350->coeff_lock);
 313
 314         /* preserve reserved bits in STA350_CFUD */
 315         regmap_read(sta350->regmap, STA350_CFUD, &cfud);
 316         cfud &= 0xf0;
 317         /*
 318          * chip documentation does not say if the bits are self clearing,
 319          * so do it explicitly
 320          */
 321         regmap_write(sta350->regmap, STA350_CFUD, cfud);
 322
 323         regmap_write(sta350->regmap, STA350_CFADDR2, index);
 324         if (numcoef == 1) {
 325                 regmap_write(sta350->regmap, STA350_CFUD, cfud | 0x04);
 326         } else if (numcoef == 5) {
 327                 regmap_write(sta350->regmap, STA350_CFUD, cfud | 0x08);
 328         } else {
 329                 ret = -EINVAL;
 330                 goto exit_unlock;
 331         }
 332
 333         for (i = 0; i < 3 * numcoef; i++) {
 334                 regmap_read(sta350->regmap, STA350_B1CF1 + i, &val);
 335                 ucontrol->value.bytes.data[i] = val;
 336         }
 337
 338 exit_unlock:
 339         mutex_unlock(&sta350->coeff_lock);
 340
 341         return ret;
 342 }
 343
 344 static int sta350_coefficient_put(struct snd_kcontrol *kcontrol,
 345                                   struct snd_ctl_elem_value *ucontrol)
 346 {
 347         struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
 348         struct sta350_priv *sta350 = snd_soc_component_get_drvdata(component);
 349         int numcoef = kcontrol->private_value >> 16;
 350         int index = kcontrol->private_value & 0xffff;
 351         unsigned int cfud;
 352         int i;
 353
 354         /* preserve reserved bits in STA350_CFUD */
 355         regmap_read(sta350->regmap, STA350_CFUD, &cfud);
 356         cfud &= 0xf0;
 357         /*
 358          * chip documentation does not say if the bits are self clearing,
 359          * so do it explicitly
 360          */
 361         regmap_write(sta350->regmap, STA350_CFUD, cfud);
 362
 363         regmap_write(sta350->regmap, STA350_CFADDR2, index);
 364         for (i = 0; i < numcoef && (index + i < STA350_COEF_COUNT); i++)
 365                 sta350->coef_shadow[index + i] =
 366                           (ucontrol->value.bytes.data[3 * i] << 16)
 367                         | (ucontrol->value.bytes.data[3 * i + 1] << 8)
 368                         | (ucontrol->value.bytes.data[3 * i + 2]);
 369         for (i = 0; i < 3 * numcoef; i++)
 370                 regmap_write(sta350->regmap, STA350_B1CF1 + i,
 371                              ucontrol->value.bytes.data[i]);
 372         if (numcoef == 1)
 373                 regmap_write(sta350->regmap, STA350_CFUD, cfud | 0x01);
 374         else if (numcoef == 5)
 375                 regmap_write(sta350->regmap, STA350_CFUD, cfud | 0x02);
 376         else
 377                 return -EINVAL;
 378
 379         return 0;
 380 }
 381
 382 static int sta350_sync_coef_shadow(struct snd_soc_component *component)
 383 {
 384         struct sta350_priv *sta350 = snd_soc_component_get_drvdata(component);
 385         unsigned int cfud;
 386         int i;
 387
 388         /* preserve reserved bits in STA350_CFUD */
 389         regmap_read(sta350->regmap, STA350_CFUD, &cfud);
 390         cfud &= 0xf0;
 391
 392         for (i = 0; i < STA350_COEF_COUNT; i++) {
 393                 regmap_write(sta350->regmap, STA350_CFADDR2, i);
 394                 regmap_write(sta350->regmap, STA350_B1CF1,
 395                              (sta350->coef_shadow[i] >> 16) & 0xff);
 396                 regmap_write(sta350->regmap, STA350_B1CF2,
 397                              (sta350->coef_shadow[i] >> 8) & 0xff);
 398                 regmap_write(sta350->regmap, STA350_B1CF3,
 399                              (sta350->coef_shadow[i]) & 0xff);
 400                 /*
 401                  * chip documentation does not say if the bits are
 402                  * self-clearing, so do it explicitly
 403                  */
 404                 regmap_write(sta350->regmap, STA350_CFUD, cfud);
 405                 regmap_write(sta350->regmap, STA350_CFUD, cfud | 0x01);
 406         }
 407         return 0;
 408 }
 409
 410 static int sta350_cache_sync(struct snd_soc_component *component)
 411 {
 412         struct sta350_priv *sta350 = snd_soc_component_get_drvdata(component);
 413         unsigned int mute;
 414         int rc;
 415
 416         /* mute during register sync */
 417         regmap_read(sta350->regmap, STA350_CFUD, &mute);
 418         regmap_write(sta350->regmap, STA350_MMUTE, mute | STA350_MMUTE_MMUTE);
 419         sta350_sync_coef_shadow(component);
 420         rc = regcache_sync(sta350->regmap);
 421         regmap_write(sta350->regmap, STA350_MMUTE, mute);
 422         return rc;
 423 }
 424
 425 #define SINGLE_COEF(xname, index) \
 426 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 427         .info = sta350_coefficient_info, \
 428         .get = sta350_coefficient_get,\
 429         .put = sta350_coefficient_put, \
 430         .private_value = index | (1 << 16) }
 431
 432 #define BIQUAD_COEFS(xname, index) \
 433 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 434         .info = sta350_coefficient_info, \
 435         .get = sta350_coefficient_get,\
 436         .put = sta350_coefficient_put, \
 437         .private_value = index | (5 << 16) }
 438
 439 static const struct snd_kcontrol_new sta350_snd_controls[] = {
 440 SOC_SINGLE_TLV("Master Volume", STA350_MVOL, 0, 0xff, 1, mvol_tlv),
 441 /* VOL */
 442 SOC_SINGLE_TLV("Ch1 Volume", STA350_C1VOL, 0, 0xff, 1, chvol_tlv),
 443 SOC_SINGLE_TLV("Ch2 Volume", STA350_C2VOL, 0, 0xff, 1, chvol_tlv),
 444 SOC_SINGLE_TLV("Ch3 Volume", STA350_C3VOL, 0, 0xff, 1, chvol_tlv),
 445 /* CONFD */
 446 SOC_SINGLE("High Pass Filter Bypass Switch",
 447            STA350_CONFD, STA350_CONFD_HPB_SHIFT, 1, 1),
 448 SOC_SINGLE("De-emphasis Filter Switch",
 449            STA350_CONFD, STA350_CONFD_DEMP_SHIFT, 1, 0),
 450 SOC_SINGLE("DSP Bypass Switch",
 451            STA350_CONFD, STA350_CONFD_DSPB_SHIFT, 1, 0),
 452 SOC_SINGLE("Post-scale Link Switch",
 453            STA350_CONFD, STA350_CONFD_PSL_SHIFT, 1, 0),
 454 SOC_SINGLE("Biquad Coefficient Link Switch",
 455            STA350_CONFD, STA350_CONFD_BQL_SHIFT, 1, 0),
 456 SOC_ENUM("Compressor/Limiter Switch", sta350_drc_ac_enum),
 457 SOC_ENUM("Noise Shaper Bandwidth", sta350_noise_shaper_enum),
 458 SOC_SINGLE("Zero-detect Mute Enable Switch",
 459            STA350_CONFD, STA350_CONFD_ZDE_SHIFT, 1, 0),
 460 SOC_SINGLE("Submix Mode Switch",
 461            STA350_CONFD, STA350_CONFD_SME_SHIFT, 1, 0),
 462 /* CONFE */
 463 SOC_SINGLE("Zero Cross Switch", STA350_CONFE, STA350_CONFE_ZCE_SHIFT, 1, 0),
 464 SOC_SINGLE("Soft Ramp Switch", STA350_CONFE, STA350_CONFE_SVE_SHIFT, 1, 0),
 465 /* MUTE */
 466 SOC_SINGLE("Master Switch", STA350_MMUTE, STA350_MMUTE_MMUTE_SHIFT, 1, 1),
 467 SOC_SINGLE("Ch1 Switch", STA350_MMUTE, STA350_MMUTE_C1M_SHIFT, 1, 1),
 468 SOC_SINGLE("Ch2 Switch", STA350_MMUTE, STA350_MMUTE_C2M_SHIFT, 1, 1),
 469 SOC_SINGLE("Ch3 Switch", STA350_MMUTE, STA350_MMUTE_C3M_SHIFT, 1, 1),
 470 /* AUTOx */
 471 SOC_ENUM("Automode GC", sta350_auto_gc_enum),
 472 SOC_ENUM("Automode XO", sta350_auto_xo_enum),
 473 /* CxCFG */
 474 SOC_SINGLE("Ch1 Tone Control Bypass Switch",
 475            STA350_C1CFG, STA350_CxCFG_TCB_SHIFT, 1, 0),
 476 SOC_SINGLE("Ch2 Tone Control Bypass Switch",
 477            STA350_C2CFG, STA350_CxCFG_TCB_SHIFT, 1, 0),
 478 SOC_SINGLE("Ch1 EQ Bypass Switch",
 479            STA350_C1CFG, STA350_CxCFG_EQBP_SHIFT, 1, 0),
 480 SOC_SINGLE("Ch2 EQ Bypass Switch",
 481            STA350_C2CFG, STA350_CxCFG_EQBP_SHIFT, 1, 0),
 482 SOC_SINGLE("Ch1 Master Volume Bypass Switch",
 483            STA350_C1CFG, STA350_CxCFG_VBP_SHIFT, 1, 0),
 484 SOC_SINGLE("Ch2 Master Volume Bypass Switch",
 485            STA350_C1CFG, STA350_CxCFG_VBP_SHIFT, 1, 0),
 486 SOC_SINGLE("Ch3 Master Volume Bypass Switch",
 487            STA350_C1CFG, STA350_CxCFG_VBP_SHIFT, 1, 0),
 488 SOC_ENUM("Ch1 Binary Output Select", sta350_binary_output_ch1_enum),
 489 SOC_ENUM("Ch2 Binary Output Select", sta350_binary_output_ch2_enum),
 490 SOC_ENUM("Ch3 Binary Output Select", sta350_binary_output_ch3_enum),
 491 SOC_ENUM("Ch1 Limiter Select", sta350_limiter_ch1_enum),
 492 SOC_ENUM("Ch2 Limiter Select", sta350_limiter_ch2_enum),
 493 SOC_ENUM("Ch3 Limiter Select", sta350_limiter_ch3_enum),
 494 /* TONE */
 495 SOC_SINGLE_RANGE_TLV("Bass Tone Control Volume",
 496                      STA350_TONE, STA350_TONE_BTC_SHIFT, 1, 13, 0, tone_tlv),
 497 SOC_SINGLE_RANGE_TLV("Treble Tone Control Volume",
 498                      STA350_TONE, STA350_TONE_TTC_SHIFT, 1, 13, 0, tone_tlv),
 499 SOC_ENUM("Limiter1 Attack Rate (dB/ms)", sta350_limiter1_attack_rate_enum),
 500 SOC_ENUM("Limiter2 Attack Rate (dB/ms)", sta350_limiter2_attack_rate_enum),
 501 SOC_ENUM("Limiter1 Release Rate (dB/ms)", sta350_limiter1_release_rate_enum),
 502 SOC_ENUM("Limiter2 Release Rate (dB/ms)", sta350_limiter2_release_rate_enum),
 503
 504 /*
 505  * depending on mode, the attack/release thresholds have
 506  * two different enum definitions; provide both
 507  */
 508 SOC_SINGLE_TLV("Limiter1 Attack Threshold (AC Mode)",
 509                STA350_L1ATRT, STA350_LxA_SHIFT,
 510                16, 0, sta350_limiter_ac_attack_tlv),
 511 SOC_SINGLE_TLV("Limiter2 Attack Threshold (AC Mode)",
 512                STA350_L2ATRT, STA350_LxA_SHIFT,
 513                16, 0, sta350_limiter_ac_attack_tlv),
 514 SOC_SINGLE_TLV("Limiter1 Release Threshold (AC Mode)",
 515                STA350_L1ATRT, STA350_LxR_SHIFT,
 516                16, 0, sta350_limiter_ac_release_tlv),
 517 SOC_SINGLE_TLV("Limiter2 Release Threshold (AC Mode)",
 518                STA350_L2ATRT, STA350_LxR_SHIFT,
 519                16, 0, sta350_limiter_ac_release_tlv),
 520 SOC_SINGLE_TLV("Limiter1 Attack Threshold (DRC Mode)",
 521                STA350_L1ATRT, STA350_LxA_SHIFT,
 522                16, 0, sta350_limiter_drc_attack_tlv),
 523 SOC_SINGLE_TLV("Limiter2 Attack Threshold (DRC Mode)",
 524                STA350_L2ATRT, STA350_LxA_SHIFT,
 525                16, 0, sta350_limiter_drc_attack_tlv),
 526 SOC_SINGLE_TLV("Limiter1 Release Threshold (DRC Mode)",
 527                STA350_L1ATRT, STA350_LxR_SHIFT,
 528                16, 0, sta350_limiter_drc_release_tlv),
 529 SOC_SINGLE_TLV("Limiter2 Release Threshold (DRC Mode)",
 530                STA350_L2ATRT, STA350_LxR_SHIFT,
 531                16, 0, sta350_limiter_drc_release_tlv),
 532
 533 BIQUAD_COEFS("Ch1 - Biquad 1", 0),
 534 BIQUAD_COEFS("Ch1 - Biquad 2", 5),
 535 BIQUAD_COEFS("Ch1 - Biquad 3", 10),
 536 BIQUAD_COEFS("Ch1 - Biquad 4", 15),
 537 BIQUAD_COEFS("Ch2 - Biquad 1", 20),
 538 BIQUAD_COEFS("Ch2 - Biquad 2", 25),
 539 BIQUAD_COEFS("Ch2 - Biquad 3", 30),
 540 BIQUAD_COEFS("Ch2 - Biquad 4", 35),
 541 BIQUAD_COEFS("High-pass", 40),
 542 BIQUAD_COEFS("Low-pass", 45),
 543 SINGLE_COEF("Ch1 - Prescale", 50),
 544 SINGLE_COEF("Ch2 - Prescale", 51),
 545 SINGLE_COEF("Ch1 - Postscale", 52),
 546 SINGLE_COEF("Ch2 - Postscale", 53),
 547 SINGLE_COEF("Ch3 - Postscale", 54),
 548 SINGLE_COEF("Thermal warning - Postscale", 55),
 549 SINGLE_COEF("Ch1 - Mix 1", 56),
 550 SINGLE_COEF("Ch1 - Mix 2", 57),
 551 SINGLE_COEF("Ch2 - Mix 1", 58),
 552 SINGLE_COEF("Ch2 - Mix 2", 59),
 553 SINGLE_COEF("Ch3 - Mix 1", 60),
 554 SINGLE_COEF("Ch3 - Mix 2", 61),
 555 };
 556
 557 static const struct snd_soc_dapm_widget sta350_dapm_widgets[] = {
 558 SND_SOC_DAPM_DAC("DAC", NULL, SND_SOC_NOPM, 0, 0),
 559 SND_SOC_DAPM_OUTPUT("LEFT"),
 560 SND_SOC_DAPM_OUTPUT("RIGHT"),
 561 SND_SOC_DAPM_OUTPUT("SUB"),
 562 };
 563
 564 static const struct snd_soc_dapm_route sta350_dapm_routes[] = {
 565         { "LEFT", NULL, "DAC" },
 566         { "RIGHT", NULL, "DAC" },
 567         { "SUB", NULL, "DAC" },
 568         { "DAC", NULL, "Playback" },
 569 };
 570
 571 /* MCLK interpolation ratio per fs */
 572 static struct {
 573         int fs;
 574         int ir;
 575 } interpolation_ratios[] = {
 576         { 32000, 0 },
 577         { 44100, 0 },
 578         { 48000, 0 },
 579         { 88200, 1 },
 580         { 96000, 1 },
 581         { 176400, 2 },
 582         { 192000, 2 },
 583 };
 584
 585 /* MCLK to fs clock ratios */
 586 static int mcs_ratio_table[3][6] = {
 587         { 768, 512, 384, 256, 128, 576 },
 588         { 384, 256, 192, 128,  64,   0 },
 589         { 192, 128,  96,  64,  32,   0 },
 590 };
 591
 592 /**
 593  * sta350_set_dai_sysclk - configure MCLK
 594  * @codec_dai: the codec DAI
 595  * @clk_id: the clock ID (ignored)
 596  * @freq: the MCLK input frequency
 597  * @dir: the clock direction (ignored)
 598  *
 599  * The value of MCLK is used to determine which sample rates are supported
 600  * by the STA350, based on the mcs_ratio_table.
 601  *
 602  * This function must be called by the machine driver's 'startup' function,
 603  * otherwise the list of supported sample rates will not be available in
 604  * time for ALSA.
 605  */
 606 static int sta350_set_dai_sysclk(struct snd_soc_dai *codec_dai,
 607                                  int clk_id, unsigned int freq, int dir)
 608 {
 609         struct snd_soc_component *component = codec_dai->component;
 610         struct sta350_priv *sta350 = snd_soc_component_get_drvdata(component);
 611
 612         dev_dbg(component->dev, "mclk=%u\n", freq);
 613         sta350->mclk = freq;
 614
 615         return 0;
 616 }
 617
 618 /**
 619  * sta350_set_dai_fmt - configure the codec for the selected audio format
 620  * @codec_dai: the codec DAI
 621  * @fmt: a SND_SOC_DAIFMT_x value indicating the data format
 622  *
 623  * This function takes a bitmask of SND_SOC_DAIFMT_x bits and programs the
 624  * codec accordingly.
 625  */
 626 static int sta350_set_dai_fmt(struct snd_soc_dai *codec_dai,
 627                               unsigned int fmt)
 628 {
 629         struct snd_soc_component *component = codec_dai->component;
 630         struct sta350_priv *sta350 = snd_soc_component_get_drvdata(component);
 631         unsigned int confb = 0;
 632
 633         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 634         case SND_SOC_DAIFMT_CBS_CFS:
 635                 break;
 636         default:
 637                 return -EINVAL;
 638         }
 639
 640         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 641         case SND_SOC_DAIFMT_I2S:
 642         case SND_SOC_DAIFMT_RIGHT_J:
 643         case SND_SOC_DAIFMT_LEFT_J:
 644                 sta350->format = fmt & SND_SOC_DAIFMT_FORMAT_MASK;
 645                 break;
 646         default:
 647                 return -EINVAL;
 648         }
 649
 650         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 651         case SND_SOC_DAIFMT_NB_NF:
 652                 confb |= STA350_CONFB_C2IM;
 653                 break;
 654         case SND_SOC_DAIFMT_NB_IF:
 655                 confb |= STA350_CONFB_C1IM;
 656                 break;
 657         default:
 658                 return -EINVAL;
 659         }
 660
 661         return regmap_update_bits(sta350->regmap, STA350_CONFB,
 662                                   STA350_CONFB_C1IM | STA350_CONFB_C2IM, confb);
 663 }
 664
 665 /**
 666  * sta350_hw_params - program the STA350 with the given hardware parameters.
 667  * @substream: the audio stream
 668  * @params: the hardware parameters to set
 669  * @dai: the SOC DAI (ignored)
 670  *
 671  * This function programs the hardware with the values provided.
 672  * Specifically, the sample rate and the data format.
 673  */
 674 static int sta350_hw_params(struct snd_pcm_substream *substream,
 675                             struct snd_pcm_hw_params *params,
 676                             struct snd_soc_dai *dai)
 677 {
 678         struct snd_soc_component *component = dai->component;
 679         struct sta350_priv *sta350 = snd_soc_component_get_drvdata(component);
 680         int i, mcs = -EINVAL, ir = -EINVAL;
 681         unsigned int confa, confb;
 682         unsigned int rate, ratio;
 683         int ret;
 684
 685         if (!sta350->mclk) {
 686                 dev_err(component->dev,
 687                         "sta350->mclk is unset. Unable to determine ratio\n");
 688                 return -EIO;
 689         }
 690
 691         rate = params_rate(params);
 692         ratio = sta350->mclk / rate;
 693         dev_dbg(component->dev, "rate: %u, ratio: %u\n", rate, ratio);
 694
 695         for (i = 0; i < ARRAY_SIZE(interpolation_ratios); i++) {
 696                 if (interpolation_ratios[i].fs == rate) {
 697                         ir = interpolation_ratios[i].ir;
 698                         break;
 699                 }
 700         }
 701
 702         if (ir < 0) {
 703                 dev_err(component->dev, "Unsupported samplerate: %u\n", rate);
 704                 return -EINVAL;
 705         }
 706
 707         for (i = 0; i < 6; i++) {
 708                 if (mcs_ratio_table[ir][i] == ratio) {
 709                         mcs = i;
 710                         break;
 711                 }
 712         }
 713
 714         if (mcs < 0) {
 715                 dev_err(component->dev, "Unresolvable ratio: %u\n", ratio);
 716                 return -EINVAL;
 717         }
 718
 719         confa = (ir << STA350_CONFA_IR_SHIFT) |
 720                 (mcs << STA350_CONFA_MCS_SHIFT);
 721         confb = 0;
 722
 723         switch (params_width(params)) {
 724         case 24:
 725                 dev_dbg(component->dev, "24bit\n");
 726                 fallthrough;
 727         case 32:
 728                 dev_dbg(component->dev, "24bit or 32bit\n");
 729                 switch (sta350->format) {
 730                 case SND_SOC_DAIFMT_I2S:
 731                         confb |= 0x0;
 732                         break;
 733                 case SND_SOC_DAIFMT_LEFT_J:
 734                         confb |= 0x1;
 735                         break;
 736                 case SND_SOC_DAIFMT_RIGHT_J:
 737                         confb |= 0x2;
 738                         break;
 739                 }
 740
 741                 break;
 742         case 20:
 743                 dev_dbg(component->dev, "20bit\n");
 744                 switch (sta350->format) {
 745                 case SND_SOC_DAIFMT_I2S:
 746                         confb |= 0x4;
 747                         break;
 748                 case SND_SOC_DAIFMT_LEFT_J:
 749                         confb |= 0x5;
 750                         break;
 751                 case SND_SOC_DAIFMT_RIGHT_J:
 752                         confb |= 0x6;
 753                         break;
 754                 }
 755
 756                 break;
 757         case 18:
 758                 dev_dbg(component->dev, "18bit\n");
 759                 switch (sta350->format) {
 760                 case SND_SOC_DAIFMT_I2S:
 761                         confb |= 0x8;
 762                         break;
 763                 case SND_SOC_DAIFMT_LEFT_J:
 764                         confb |= 0x9;
 765                         break;
 766                 case SND_SOC_DAIFMT_RIGHT_J:
 767                         confb |= 0xa;
 768                         break;
 769                 }
 770
 771                 break;
 772         case 16:
 773                 dev_dbg(component->dev, "16bit\n");
 774                 switch (sta350->format) {
 775                 case SND_SOC_DAIFMT_I2S:
 776                         confb |= 0x0;
 777                         break;
 778                 case SND_SOC_DAIFMT_LEFT_J:
 779                         confb |= 0xd;
 780                         break;
 781                 case SND_SOC_DAIFMT_RIGHT_J:
 782                         confb |= 0xe;
 783                         break;
 784                 }
 785
 786                 break;
 787         default:
 788                 return -EINVAL;
 789         }
 790
 791         ret = regmap_update_bits(sta350->regmap, STA350_CONFA,
 792                                  STA350_CONFA_MCS_MASK | STA350_CONFA_IR_MASK,
 793                                  confa);
 794         if (ret < 0)
 795                 return ret;
 796
 797         ret = regmap_update_bits(sta350->regmap, STA350_CONFB,
 798                                  STA350_CONFB_SAI_MASK | STA350_CONFB_SAIFB,
 799                                  confb);
 800         if (ret < 0)
 801                 return ret;
 802
 803         return 0;
 804 }
 805
 806 static int sta350_startup_sequence(struct sta350_priv *sta350)
 807 {
 808         if (sta350->gpiod_power_down)
 809                 gpiod_set_value(sta350->gpiod_power_down, 1);
 810
 811         if (sta350->gpiod_nreset) {
 812                 gpiod_set_value(sta350->gpiod_nreset, 0);
 813                 mdelay(1);
 814                 gpiod_set_value(sta350->gpiod_nreset, 1);
 815                 mdelay(1);
 816         }
 817
 818         return 0;
 819 }
 820
 821 /**
 822  * sta350_set_bias_level - DAPM callback
 823  * @component: the component device
 824  * @level: DAPM power level
 825  *
 826  * This is called by ALSA to put the component into low power mode
 827  * or to wake it up.  If the component is powered off completely
 828  * all registers must be restored after power on.
 829  */
 830 static int sta350_set_bias_level(struct snd_soc_component *component,
 831                                  enum snd_soc_bias_level level)
 832 {
 833         struct sta350_priv *sta350 = snd_soc_component_get_drvdata(component);
 834         int ret;
 835
 836         dev_dbg(component->dev, "level = %d\n", level);
 837         switch (level) {
 838         case SND_SOC_BIAS_ON:
 839                 break;
 840
 841         case SND_SOC_BIAS_PREPARE:
 842                 /* Full power on */
 843                 regmap_update_bits(sta350->regmap, STA350_CONFF,
 844                                    STA350_CONFF_PWDN | STA350_CONFF_EAPD,
 845                                    STA350_CONFF_PWDN | STA350_CONFF_EAPD);
 846                 break;
 847
 848         case SND_SOC_BIAS_STANDBY:
 849                 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) {
 850                         ret = regulator_bulk_enable(
 851                                 ARRAY_SIZE(sta350->supplies),
 852                                 sta350->supplies);
 853                         if (ret < 0) {
 854                                 dev_err(component->dev,
 855                                         "Failed to enable supplies: %d\n",
 856                                         ret);
 857                                 return ret;
 858                         }
 859                         sta350_startup_sequence(sta350);
 860                         sta350_cache_sync(component);
 861                 }
 862
 863                 /* Power down */
 864                 regmap_update_bits(sta350->regmap, STA350_CONFF,
 865                                    STA350_CONFF_PWDN | STA350_CONFF_EAPD,
 866                                    0);
 867
 868                 break;
 869
 870         case SND_SOC_BIAS_OFF:
 871                 /* The chip runs through the power down sequence for us */
 872                 regmap_update_bits(sta350->regmap, STA350_CONFF,
 873                                    STA350_CONFF_PWDN | STA350_CONFF_EAPD, 0);
 874
 875                 /* power down: low */
 876                 if (sta350->gpiod_power_down)
 877                         gpiod_set_value(sta350->gpiod_power_down, 0);
 878
 879                 if (sta350->gpiod_nreset)
 880                         gpiod_set_value(sta350->gpiod_nreset, 0);
 881
 882                 regulator_bulk_disable(ARRAY_SIZE(sta350->supplies),
 883                                        sta350->supplies);
 884                 break;
 885         }
 886         return 0;
 887 }
 888
 889 static const struct snd_soc_dai_ops sta350_dai_ops = {
 890         .hw_params      = sta350_hw_params,
 891         .set_sysclk     = sta350_set_dai_sysclk,
 892         .set_fmt        = sta350_set_dai_fmt,
 893 };
 894
 895 static struct snd_soc_dai_driver sta350_dai = {
 896         .name = "sta350-hifi",
 897         .playback = {
 898                 .stream_name = "Playback",
 899                 .channels_min = 2,
 900                 .channels_max = 2,
 901                 .rates = STA350_RATES,
 902                 .formats = STA350_FORMATS,
 903         },
 904         .ops = &sta350_dai_ops,
 905 };
 906
 907 static int sta350_probe(struct snd_soc_component *component)
 908 {
 909         struct sta350_priv *sta350 = snd_soc_component_get_drvdata(component);
 910         struct sta350_platform_data *pdata = sta350->pdata;
 911         int i, ret = 0, thermal = 0;
 912
 913         ret = regulator_bulk_enable(ARRAY_SIZE(sta350->supplies),
 914                                     sta350->supplies);
 915         if (ret < 0) {
 916                 dev_err(component->dev, "Failed to enable supplies: %d\n", ret);
 917                 return ret;
 918         }
 919
 920         ret = sta350_startup_sequence(sta350);
 921         if (ret < 0) {
 922                 dev_err(component->dev, "Failed to startup device\n");
 923                 return ret;
 924         }
 925
 926         /* CONFA */
 927         if (!pdata->thermal_warning_recovery)
 928                 thermal |= STA350_CONFA_TWAB;
 929         if (!pdata->thermal_warning_adjustment)
 930                 thermal |= STA350_CONFA_TWRB;
 931         if (!pdata->fault_detect_recovery)
 932                 thermal |= STA350_CONFA_FDRB;
 933         regmap_update_bits(sta350->regmap, STA350_CONFA,
 934                            STA350_CONFA_TWAB | STA350_CONFA_TWRB |
 935                            STA350_CONFA_FDRB,
 936                            thermal);
 937
 938         /* CONFC */
 939         regmap_update_bits(sta350->regmap, STA350_CONFC,
 940                            STA350_CONFC_OM_MASK,
 941                            pdata->ffx_power_output_mode
 942                                 << STA350_CONFC_OM_SHIFT);
 943         regmap_update_bits(sta350->regmap, STA350_CONFC,
 944                            STA350_CONFC_CSZ_MASK,
 945                            pdata->drop_compensation_ns
 946                                 << STA350_CONFC_CSZ_SHIFT);
 947         regmap_update_bits(sta350->regmap,
 948                            STA350_CONFC,
 949                            STA350_CONFC_OCRB,
 950                            pdata->oc_warning_adjustment ?
 951                                 STA350_CONFC_OCRB : 0);
 952
 953         /* CONFE */
 954         regmap_update_bits(sta350->regmap, STA350_CONFE,
 955                            STA350_CONFE_MPCV,
 956                            pdata->max_power_use_mpcc ?
 957                                 STA350_CONFE_MPCV : 0);
 958         regmap_update_bits(sta350->regmap, STA350_CONFE,
 959                            STA350_CONFE_MPC,
 960                            pdata->max_power_correction ?
 961                                 STA350_CONFE_MPC : 0);
 962         regmap_update_bits(sta350->regmap, STA350_CONFE,
 963                            STA350_CONFE_AME,
 964                            pdata->am_reduction_mode ?
 965                                 STA350_CONFE_AME : 0);
 966         regmap_update_bits(sta350->regmap, STA350_CONFE,
 967                            STA350_CONFE_PWMS,
 968                            pdata->odd_pwm_speed_mode ?
 969                                 STA350_CONFE_PWMS : 0);
 970         regmap_update_bits(sta350->regmap, STA350_CONFE,
 971                            STA350_CONFE_DCCV,
 972                            pdata->distortion_compensation ?
 973                                 STA350_CONFE_DCCV : 0);
 974         /*  CONFF */
 975         regmap_update_bits(sta350->regmap, STA350_CONFF,
 976                            STA350_CONFF_IDE,
 977                            pdata->invalid_input_detect_mute ?
 978                                 STA350_CONFF_IDE : 0);
 979         regmap_update_bits(sta350->regmap, STA350_CONFF,
 980                            STA350_CONFF_OCFG_MASK,
 981                            pdata->output_conf
 982                                 << STA350_CONFF_OCFG_SHIFT);
 983
 984         /* channel to output mapping */
 985         regmap_update_bits(sta350->regmap, STA350_C1CFG,
 986                            STA350_CxCFG_OM_MASK,
 987                            pdata->ch1_output_mapping
 988                                 << STA350_CxCFG_OM_SHIFT);
 989         regmap_update_bits(sta350->regmap, STA350_C2CFG,
 990                            STA350_CxCFG_OM_MASK,
 991                            pdata->ch2_output_mapping
 992                                 << STA350_CxCFG_OM_SHIFT);
 993         regmap_update_bits(sta350->regmap, STA350_C3CFG,
 994                            STA350_CxCFG_OM_MASK,
 995                            pdata->ch3_output_mapping
 996                                 << STA350_CxCFG_OM_SHIFT);
 997
 998         /* miscellaneous registers */
 999         regmap_update_bits(sta350->regmap, STA350_MISC1,
1000                            STA350_MISC1_CPWMEN,
1001                            pdata->activate_mute_output ?
1002                                 STA350_MISC1_CPWMEN : 0);
1003         regmap_update_bits(sta350->regmap, STA350_MISC1,
1004                            STA350_MISC1_BRIDGOFF,
1005                            pdata->bridge_immediate_off ?
1006                                 STA350_MISC1_BRIDGOFF : 0);
1007         regmap_update_bits(sta350->regmap, STA350_MISC1,
1008                            STA350_MISC1_NSHHPEN,
1009                            pdata->noise_shape_dc_cut ?
1010                                 STA350_MISC1_NSHHPEN : 0);
1011         regmap_update_bits(sta350->regmap, STA350_MISC1,
1012                            STA350_MISC1_RPDNEN,
1013                            pdata->powerdown_master_vol ?
1014                                 STA350_MISC1_RPDNEN: 0);
1015
1016         regmap_update_bits(sta350->regmap, STA350_MISC2,
1017                            STA350_MISC2_PNDLSL_MASK,
1018                            pdata->powerdown_delay_divider
1019                                 << STA350_MISC2_PNDLSL_SHIFT);
1020
1021         /* initialize coefficient shadow RAM with reset values */
1022         for (i = 4; i <= 49; i += 5)
1023                 sta350->coef_shadow[i] = 0x400000;
1024         for (i = 50; i <= 54; i++)
1025                 sta350->coef_shadow[i] = 0x7fffff;
1026         sta350->coef_shadow[55] = 0x5a9df7;
1027         sta350->coef_shadow[56] = 0x7fffff;
1028         sta350->coef_shadow[59] = 0x7fffff;
1029         sta350->coef_shadow[60] = 0x400000;
1030         sta350->coef_shadow[61] = 0x400000;
1031
1032         snd_soc_component_force_bias_level(component, SND_SOC_BIAS_STANDBY);
1033         /* Bias level configuration will have done an extra enable */
1034         regulator_bulk_disable(ARRAY_SIZE(sta350->supplies), sta350->supplies);
1035
1036         return 0;
1037 }
1038
1039 static void sta350_remove(struct snd_soc_component *component)
1040 {
1041         struct sta350_priv *sta350 = snd_soc_component_get_drvdata(component);
1042
1043         regulator_bulk_disable(ARRAY_SIZE(sta350->supplies), sta350->supplies);
1044 }
1045
1046 static const struct snd_soc_component_driver sta350_component = {
1047         .probe                  = sta350_probe,
1048         .remove                 = sta350_remove,
1049         .set_bias_level         = sta350_set_bias_level,
1050         .controls               = sta350_snd_controls,
1051         .num_controls           = ARRAY_SIZE(sta350_snd_controls),
1052         .dapm_widgets           = sta350_dapm_widgets,
1053         .num_dapm_widgets       = ARRAY_SIZE(sta350_dapm_widgets),
1054         .dapm_routes            = sta350_dapm_routes,
1055         .num_dapm_routes        = ARRAY_SIZE(sta350_dapm_routes),
1056         .suspend_bias_off       = 1,
1057         .idle_bias_on           = 1,
1058         .use_pmdown_time        = 1,
1059         .endianness             = 1,
1060         .non_legacy_dai_naming  = 1,
1061 };
1062
1063 static const struct regmap_config sta350_regmap = {
1064         .reg_bits =             8,
1065         .val_bits =             8,
1066         .max_register =         STA350_MISC2,
1067         .reg_defaults =         sta350_regs,
1068         .num_reg_defaults =     ARRAY_SIZE(sta350_regs),
1069         .cache_type =           REGCACHE_RBTREE,
1070         .wr_table =             &sta350_write_regs,
1071         .rd_table =             &sta350_read_regs,
1072         .volatile_table =       &sta350_volatile_regs,
1073 };
1074
1075 #ifdef CONFIG_OF
1076 static const struct of_device_id st350_dt_ids[] = {
1077         { .compatible = "st,sta350", },
1078         { }
1079 };
1080 MODULE_DEVICE_TABLE(of, st350_dt_ids);
1081
1082 static const char * const sta350_ffx_modes[] = {
1083         [STA350_FFX_PM_DROP_COMP]               = "drop-compensation",
1084         [STA350_FFX_PM_TAPERED_COMP]            = "tapered-compensation",
1085         [STA350_FFX_PM_FULL_POWER]              = "full-power-mode",
1086         [STA350_FFX_PM_VARIABLE_DROP_COMP]      = "variable-drop-compensation",
1087 };
1088
1089 static int sta350_probe_dt(struct device *dev, struct sta350_priv *sta350)
1090 {
1091         struct device_node *np = dev->of_node;
1092         struct sta350_platform_data *pdata;
1093         const char *ffx_power_mode;
1094         u16 tmp;
1095         u8 tmp8;
1096
1097         pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
1098         if (!pdata)
1099                 return -ENOMEM;
1100
1101         of_property_read_u8(np, "st,output-conf",
1102                             &pdata->output_conf);
1103         of_property_read_u8(np, "st,ch1-output-mapping",
1104                             &pdata->ch1_output_mapping);
1105         of_property_read_u8(np, "st,ch2-output-mapping",
1106                             &pdata->ch2_output_mapping);
1107         of_property_read_u8(np, "st,ch3-output-mapping",
1108                             &pdata->ch3_output_mapping);
1109
1110         if (of_get_property(np, "st,thermal-warning-recovery", NULL))
1111                 pdata->thermal_warning_recovery = 1;
1112         if (of_get_property(np, "st,thermal-warning-adjustment", NULL))
1113                 pdata->thermal_warning_adjustment = 1;
1114         if (of_get_property(np, "st,fault-detect-recovery", NULL))
1115                 pdata->fault_detect_recovery = 1;
1116
1117         pdata->ffx_power_output_mode = STA350_FFX_PM_VARIABLE_DROP_COMP;
1118         if (!of_property_read_string(np, "st,ffx-power-output-mode",
1119                                      &ffx_power_mode)) {
1120                 int i, mode = -EINVAL;
1121
1122                 for (i = 0; i < ARRAY_SIZE(sta350_ffx_modes); i++)
1123                         if (!strcasecmp(ffx_power_mode, sta350_ffx_modes[i]))
1124                                 mode = i;
1125
1126                 if (mode < 0)
1127                         dev_warn(dev, "Unsupported ffx output mode: %s\n",
1128                                  ffx_power_mode);
1129                 else
1130                         pdata->ffx_power_output_mode = mode;
1131         }
1132
1133         tmp = 140;
1134         of_property_read_u16(np, "st,drop-compensation-ns", &tmp);
1135         pdata->drop_compensation_ns = clamp_t(u16, tmp, 0, 300) / 20;
1136
1137         if (of_get_property(np, "st,overcurrent-warning-adjustment", NULL))
1138                 pdata->oc_warning_adjustment = 1;
1139
1140         /* CONFE */
1141         if (of_get_property(np, "st,max-power-use-mpcc", NULL))
1142                 pdata->max_power_use_mpcc = 1;
1143
1144         if (of_get_property(np, "st,max-power-correction", NULL))
1145                 pdata->max_power_correction = 1;
1146
1147         if (of_get_property(np, "st,am-reduction-mode", NULL))
1148                 pdata->am_reduction_mode = 1;
1149
1150         if (of_get_property(np, "st,odd-pwm-speed-mode", NULL))
1151                 pdata->odd_pwm_speed_mode = 1;
1152
1153         if (of_get_property(np, "st,distortion-compensation", NULL))
1154                 pdata->distortion_compensation = 1;
1155
1156         /* CONFF */
1157         if (of_get_property(np, "st,invalid-input-detect-mute", NULL))
1158                 pdata->invalid_input_detect_mute = 1;
1159
1160         /* MISC */
1161         if (of_get_property(np, "st,activate-mute-output", NULL))
1162                 pdata->activate_mute_output = 1;
1163
1164         if (of_get_property(np, "st,bridge-immediate-off", NULL))
1165                 pdata->bridge_immediate_off = 1;
1166
1167         if (of_get_property(np, "st,noise-shape-dc-cut", NULL))
1168                 pdata->noise_shape_dc_cut = 1;
1169
1170         if (of_get_property(np, "st,powerdown-master-volume", NULL))
1171                 pdata->powerdown_master_vol = 1;
1172
1173         if (!of_property_read_u8(np, "st,powerdown-delay-divider", &tmp8)) {
1174                 if (is_power_of_2(tmp8) && tmp8 >= 1 && tmp8 <= 128)
1175                         pdata->powerdown_delay_divider = ilog2(tmp8);
1176                 else
1177                         dev_warn(dev, "Unsupported powerdown delay divider %d\n",
1178                                  tmp8);
1179         }
1180
1181         sta350->pdata = pdata;
1182
1183         return 0;
1184 }
1185 #endif
1186
1187 static int sta350_i2c_probe(struct i2c_client *i2c)
1188 {
1189         struct device *dev = &i2c->dev;
1190         struct sta350_priv *sta350;
1191         int ret, i;
1192
1193         sta350 = devm_kzalloc(dev, sizeof(struct sta350_priv), GFP_KERNEL);
1194         if (!sta350)
1195                 return -ENOMEM;
1196
1197         mutex_init(&sta350->coeff_lock);
1198         sta350->pdata = dev_get_platdata(dev);
1199
1200 #ifdef CONFIG_OF
1201         if (dev->of_node) {
1202                 ret = sta350_probe_dt(dev, sta350);
1203                 if (ret < 0)
1204                         return ret;
1205         }
1206 #endif
1207
1208         /* GPIOs */
1209         sta350->gpiod_nreset = devm_gpiod_get_optional(dev, "reset",
1210                                                        GPIOD_OUT_LOW);
1211         if (IS_ERR(sta350->gpiod_nreset))
1212                 return PTR_ERR(sta350->gpiod_nreset);
1213
1214         sta350->gpiod_power_down = devm_gpiod_get_optional(dev, "power-down",
1215                                                            GPIOD_OUT_LOW);
1216         if (IS_ERR(sta350->gpiod_power_down))
1217                 return PTR_ERR(sta350->gpiod_power_down);
1218
1219         /* regulators */
1220         for (i = 0; i < ARRAY_SIZE(sta350->supplies); i++)
1221                 sta350->supplies[i].supply = sta350_supply_names[i];
1222
1223         ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(sta350->supplies),
1224                                       sta350->supplies);
1225         if (ret < 0) {
1226                 dev_err(dev, "Failed to request supplies: %d\n", ret);
1227                 return ret;
1228         }
1229
1230         sta350->regmap = devm_regmap_init_i2c(i2c, &sta350_regmap);
1231         if (IS_ERR(sta350->regmap)) {
1232                 ret = PTR_ERR(sta350->regmap);
1233                 dev_err(dev, "Failed to init regmap: %d\n", ret);
1234                 return ret;
1235         }
1236
1237         i2c_set_clientdata(i2c, sta350);
1238
1239         ret = devm_snd_soc_register_component(dev, &sta350_component, &sta350_dai, 1);
1240         if (ret < 0)
1241                 dev_err(dev, "Failed to register component (%d)\n", ret);
1242
1243         return ret;
1244 }
1245
1246 static int sta350_i2c_remove(struct i2c_client *client)
1247 {
1248         return 0;
1249 }
1250
1251 static const struct i2c_device_id sta350_i2c_id[] = {
1252         { "sta350", 0 },
1253         { }
1254 };
1255 MODULE_DEVICE_TABLE(i2c, sta350_i2c_id);
1256
1257 static struct i2c_driver sta350_i2c_driver = {
1258         .driver = {
1259                 .name = "sta350",
1260                 .of_match_table = of_match_ptr(st350_dt_ids),
1261         },
1262         .probe_new = sta350_i2c_probe,
1263         .remove =   sta350_i2c_remove,
1264         .id_table = sta350_i2c_id,
1265 };
1266
1267 module_i2c_driver(sta350_i2c_driver);
1268
1269 MODULE_DESCRIPTION("ASoC STA350 driver");
1270 MODULE_AUTHOR("Sven Brandau <info@brandau.biz>");
1271 MODULE_LICENSE("GPL");