1// SPDX-License-Identifier: GPL-2.0-or-later 2/* 3 * Codec driver for ST STA32x 2.1-channel high-efficiency digital audio system 4 * 5 * Copyright: 2011 Raumfeld GmbH 6 * Author: Johannes Stezenbach <js@sig21.net> 7 * 8 * based on code from: 9 * Wolfson Microelectronics PLC. 10 * Mark Brown <broonie@opensource.wolfsonmicro.com> 11 * Freescale Semiconductor, Inc. 12 * Timur Tabi <timur@freescale.com> 13 */ 14 15#define pr_fmt(fmt) KBUILD_MODNAME ":%s:%d: " fmt, __func__, __LINE__ 16 17#include <linux/module.h> 18#include <linux/moduleparam.h> 19#include <linux/init.h> 20#include <linux/clk.h> 21#include <linux/delay.h> 22#include <linux/pm.h> 23#include <linux/i2c.h> 24#include <linux/of_device.h> 25#include <linux/of_gpio.h> 26#include <linux/regmap.h> 27#include <linux/regulator/consumer.h> 28#include <linux/gpio/consumer.h> 29#include <linux/slab.h> 30#include <linux/workqueue.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/sta32x.h> 40#include "sta32x.h" 41 42#define STA32X_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 STA32X_FORMATS \ 51 (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE | \ 52 SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE | \ 53 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE | \ 54 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE | \ 55 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE | \ 56 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE) 57 58/* Power-up register defaults */ 59static const struct reg_default sta32x_regs[] = { 60 { 0x0, 0x63 }, 61 { 0x1, 0x80 }, 62 { 0x2, 0xc2 }, 63 { 0x3, 0x40 }, 64 { 0x4, 0xc2 }, 65 { 0x5, 0x5c }, 66 { 0x6, 0x10 }, 67 { 0x7, 0xff }, 68 { 0x8, 0x60 }, 69 { 0x9, 0x60 }, 70 { 0xa, 0x60 }, 71 { 0xb, 0x80 }, 72 { 0xc, 0x00 }, 73 { 0xd, 0x00 }, 74 { 0xe, 0x00 }, 75 { 0xf, 0x40 }, 76 { 0x10, 0x80 }, 77 { 0x11, 0x77 }, 78 { 0x12, 0x6a }, 79 { 0x13, 0x69 }, 80 { 0x14, 0x6a }, 81 { 0x15, 0x69 }, 82 { 0x16, 0x00 }, 83 { 0x17, 0x00 }, 84 { 0x18, 0x00 }, 85 { 0x19, 0x00 }, 86 { 0x1a, 0x00 }, 87 { 0x1b, 0x00 }, 88 { 0x1c, 0x00 }, 89 { 0x1d, 0x00 }, 90 { 0x1e, 0x00 }, 91 { 0x1f, 0x00 }, 92 { 0x20, 0x00 }, 93 { 0x21, 0x00 }, 94 { 0x22, 0x00 }, 95 { 0x23, 0x00 }, 96 { 0x24, 0x00 }, 97 { 0x25, 0x00 }, 98 { 0x26, 0x00 }, 99 { 0x27, 0x2d }, 100 { 0x28, 0xc0 }, 101 { 0x2b, 0x00 }, 102 { 0x2c, 0x0c }, 103}; 104 105static const struct regmap_range sta32x_write_regs_range[] = { 106 regmap_reg_range(STA32X_CONFA, STA32X_FDRC2), 107}; 108 109static const struct regmap_range sta32x_read_regs_range[] = { 110 regmap_reg_range(STA32X_CONFA, STA32X_FDRC2), 111}; 112 113static const struct regmap_range sta32x_volatile_regs_range[] = { 114 regmap_reg_range(STA32X_CFADDR2, STA32X_CFUD), 115}; 116 117static const struct regmap_access_table sta32x_write_regs = { 118 .yes_ranges = sta32x_write_regs_range, 119 .n_yes_ranges = ARRAY_SIZE(sta32x_write_regs_range), 120}; 121 122static const struct regmap_access_table sta32x_read_regs = { 123 .yes_ranges = sta32x_read_regs_range, 124 .n_yes_ranges = ARRAY_SIZE(sta32x_read_regs_range), 125}; 126 127static const struct regmap_access_table sta32x_volatile_regs = { 128 .yes_ranges = sta32x_volatile_regs_range, 129 .n_yes_ranges = ARRAY_SIZE(sta32x_volatile_regs_range), 130}; 131 132/* regulator power supply names */ 133static const char *sta32x_supply_names[] = { 134 "Vdda", /* analog supply, 3.3VV */ 135 "Vdd3", /* digital supply, 3.3V */ 136 "Vcc" /* power amp spply, 10V - 36V */ 137}; 138 139/* codec private data */ 140struct sta32x_priv { 141 struct regmap *regmap; 142 struct clk *xti_clk; 143 struct regulator_bulk_data supplies[ARRAY_SIZE(sta32x_supply_names)]; 144 struct snd_soc_component *component; 145 struct sta32x_platform_data *pdata; 146 147 unsigned int mclk; 148 unsigned int format; 149 150 u32 coef_shadow[STA32X_COEF_COUNT]; 151 struct delayed_work watchdog_work; 152 int shutdown; 153 struct gpio_desc *gpiod_nreset; 154 struct mutex coeff_lock; 155}; 156 157static const DECLARE_TLV_DB_SCALE(mvol_tlv, -12700, 50, 1); 158static const DECLARE_TLV_DB_SCALE(chvol_tlv, -7950, 50, 1); 159static const DECLARE_TLV_DB_SCALE(tone_tlv, -120, 200, 0); 160 161static const char *sta32x_drc_ac[] = { 162 "Anti-Clipping", "Dynamic Range Compression" }; 163static const char *sta32x_auto_eq_mode[] = { 164 "User", "Preset", "Loudness" }; 165static const char *sta32x_auto_gc_mode[] = { 166 "User", "AC no clipping", "AC limited clipping (10%)", 167 "DRC nighttime listening mode" }; 168static const char *sta32x_auto_xo_mode[] = { 169 "User", "80Hz", "100Hz", "120Hz", "140Hz", "160Hz", "180Hz", "200Hz", 170 "220Hz", "240Hz", "260Hz", "280Hz", "300Hz", "320Hz", "340Hz", "360Hz" }; 171static const char *sta32x_preset_eq_mode[] = { 172 "Flat", "Rock", "Soft Rock", "Jazz", "Classical", "Dance", "Pop", "Soft", 173 "Hard", "Party", "Vocal", "Hip-Hop", "Dialog", "Bass-boost #1", 174 "Bass-boost #2", "Bass-boost #3", "Loudness 1", "Loudness 2", 175 "Loudness 3", "Loudness 4", "Loudness 5", "Loudness 6", "Loudness 7", 176 "Loudness 8", "Loudness 9", "Loudness 10", "Loudness 11", "Loudness 12", 177 "Loudness 13", "Loudness 14", "Loudness 15", "Loudness 16" }; 178static const char *sta32x_limiter_select[] = { 179 "Limiter Disabled", "Limiter #1", "Limiter #2" }; 180static const char *sta32x_limiter_attack_rate[] = { 181 "3.1584", "2.7072", "2.2560", "1.8048", "1.3536", "0.9024", 182 "0.4512", "0.2256", "0.1504", "0.1123", "0.0902", "0.0752", 183 "0.0645", "0.0564", "0.0501", "0.0451" }; 184static const char *sta32x_limiter_release_rate[] = { 185 "0.5116", "0.1370", "0.0744", "0.0499", "0.0360", "0.0299", 186 "0.0264", "0.0208", "0.0198", "0.0172", "0.0147", "0.0137", 187 "0.0134", "0.0117", "0.0110", "0.0104" }; 188static DECLARE_TLV_DB_RANGE(sta32x_limiter_ac_attack_tlv, 189 0, 7, TLV_DB_SCALE_ITEM(-1200, 200, 0), 190 8, 16, TLV_DB_SCALE_ITEM(300, 100, 0), 191); 192 193static DECLARE_TLV_DB_RANGE(sta32x_limiter_ac_release_tlv, 194 0, 0, TLV_DB_SCALE_ITEM(TLV_DB_GAIN_MUTE, 0, 0), 195 1, 1, TLV_DB_SCALE_ITEM(-2900, 0, 0), 196 2, 2, TLV_DB_SCALE_ITEM(-2000, 0, 0), 197 3, 8, TLV_DB_SCALE_ITEM(-1400, 200, 0), 198 8, 16, TLV_DB_SCALE_ITEM(-700, 100, 0), 199); 200 201static DECLARE_TLV_DB_RANGE(sta32x_limiter_drc_attack_tlv, 202 0, 7, TLV_DB_SCALE_ITEM(-3100, 200, 0), 203 8, 13, TLV_DB_SCALE_ITEM(-1600, 100, 0), 204 14, 16, TLV_DB_SCALE_ITEM(-1000, 300, 0), 205); 206 207static DECLARE_TLV_DB_RANGE(sta32x_limiter_drc_release_tlv, 208 0, 0, TLV_DB_SCALE_ITEM(TLV_DB_GAIN_MUTE, 0, 0), 209 1, 2, TLV_DB_SCALE_ITEM(-3800, 200, 0), 210 3, 4, TLV_DB_SCALE_ITEM(-3300, 200, 0), 211 5, 12, TLV_DB_SCALE_ITEM(-3000, 200, 0), 212 13, 16, TLV_DB_SCALE_ITEM(-1500, 300, 0), 213); 214 215static SOC_ENUM_SINGLE_DECL(sta32x_drc_ac_enum, 216 STA32X_CONFD, STA32X_CONFD_DRC_SHIFT, 217 sta32x_drc_ac); 218static SOC_ENUM_SINGLE_DECL(sta32x_auto_eq_enum, 219 STA32X_AUTO1, STA32X_AUTO1_AMEQ_SHIFT, 220 sta32x_auto_eq_mode); 221static SOC_ENUM_SINGLE_DECL(sta32x_auto_gc_enum, 222 STA32X_AUTO1, STA32X_AUTO1_AMGC_SHIFT, 223 sta32x_auto_gc_mode); 224static SOC_ENUM_SINGLE_DECL(sta32x_auto_xo_enum, 225 STA32X_AUTO2, STA32X_AUTO2_XO_SHIFT, 226 sta32x_auto_xo_mode); 227static SOC_ENUM_SINGLE_DECL(sta32x_preset_eq_enum, 228 STA32X_AUTO3, STA32X_AUTO3_PEQ_SHIFT, 229 sta32x_preset_eq_mode); 230static SOC_ENUM_SINGLE_DECL(sta32x_limiter_ch1_enum, 231 STA32X_C1CFG, STA32X_CxCFG_LS_SHIFT, 232 sta32x_limiter_select); 233static SOC_ENUM_SINGLE_DECL(sta32x_limiter_ch2_enum, 234 STA32X_C2CFG, STA32X_CxCFG_LS_SHIFT, 235 sta32x_limiter_select); 236static SOC_ENUM_SINGLE_DECL(sta32x_limiter_ch3_enum, 237 STA32X_C3CFG, STA32X_CxCFG_LS_SHIFT, 238 sta32x_limiter_select); 239static SOC_ENUM_SINGLE_DECL(sta32x_limiter1_attack_rate_enum, 240 STA32X_L1AR, STA32X_LxA_SHIFT, 241 sta32x_limiter_attack_rate); 242static SOC_ENUM_SINGLE_DECL(sta32x_limiter2_attack_rate_enum, 243 STA32X_L2AR, STA32X_LxA_SHIFT, 244 sta32x_limiter_attack_rate); 245static SOC_ENUM_SINGLE_DECL(sta32x_limiter1_release_rate_enum, 246 STA32X_L1AR, STA32X_LxR_SHIFT, 247 sta32x_limiter_release_rate); 248static SOC_ENUM_SINGLE_DECL(sta32x_limiter2_release_rate_enum, 249 STA32X_L2AR, STA32X_LxR_SHIFT, 250 sta32x_limiter_release_rate); 251 252/* byte array controls for setting biquad, mixer, scaling coefficients; 253 * for biquads all five coefficients need to be set in one go, 254 * mixer and pre/postscale coefs can be set individually; 255 * each coef is 24bit, the bytes are ordered in the same way 256 * as given in the STA32x data sheet (big endian; b1, b2, a1, a2, b0) 257 */ 258 259static int sta32x_coefficient_info(struct snd_kcontrol *kcontrol, 260 struct snd_ctl_elem_info *uinfo) 261{ 262 int numcoef = kcontrol->private_value >> 16; 263 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES; 264 uinfo->count = 3 * numcoef; 265 return 0; 266} 267 268static int sta32x_coefficient_get(struct snd_kcontrol *kcontrol, 269 struct snd_ctl_elem_value *ucontrol) 270{ 271 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); 272 struct sta32x_priv *sta32x = snd_soc_component_get_drvdata(component); 273 int numcoef = kcontrol->private_value >> 16; 274 int index = kcontrol->private_value & 0xffff; 275 unsigned int cfud, val; 276 int i, ret = 0; 277 278 mutex_lock(&sta32x->coeff_lock); 279 280 /* preserve reserved bits in STA32X_CFUD */ 281 regmap_read(sta32x->regmap, STA32X_CFUD, &cfud); 282 cfud &= 0xf0; 283 /* 284 * chip documentation does not say if the bits are self clearing, 285 * so do it explicitly 286 */ 287 regmap_write(sta32x->regmap, STA32X_CFUD, cfud); 288 289 regmap_write(sta32x->regmap, STA32X_CFADDR2, index); 290 if (numcoef == 1) { 291 regmap_write(sta32x->regmap, STA32X_CFUD, cfud | 0x04); 292 } else if (numcoef == 5) { 293 regmap_write(sta32x->regmap, STA32X_CFUD, cfud | 0x08); 294 } else { 295 ret = -EINVAL; 296 goto exit_unlock; 297 } 298 299 for (i = 0; i < 3 * numcoef; i++) { 300 regmap_read(sta32x->regmap, STA32X_B1CF1 + i, &val); 301 ucontrol->value.bytes.data[i] = val; 302 } 303 304exit_unlock: 305 mutex_unlock(&sta32x->coeff_lock); 306 307 return ret; 308} 309 310static int sta32x_coefficient_put(struct snd_kcontrol *kcontrol, 311 struct snd_ctl_elem_value *ucontrol) 312{ 313 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); 314 struct sta32x_priv *sta32x = snd_soc_component_get_drvdata(component); 315 int numcoef = kcontrol->private_value >> 16; 316 int index = kcontrol->private_value & 0xffff; 317 unsigned int cfud; 318 int i; 319 320 /* preserve reserved bits in STA32X_CFUD */ 321 regmap_read(sta32x->regmap, STA32X_CFUD, &cfud); 322 cfud &= 0xf0; 323 /* 324 * chip documentation does not say if the bits are self clearing, 325 * so do it explicitly 326 */ 327 regmap_write(sta32x->regmap, STA32X_CFUD, cfud); 328 329 regmap_write(sta32x->regmap, STA32X_CFADDR2, index); 330 for (i = 0; i < numcoef && (index + i < STA32X_COEF_COUNT); i++) 331 sta32x->coef_shadow[index + i] = 332 (ucontrol->value.bytes.data[3 * i] << 16) 333 | (ucontrol->value.bytes.data[3 * i + 1] << 8) 334 | (ucontrol->value.bytes.data[3 * i + 2]); 335 for (i = 0; i < 3 * numcoef; i++) 336 regmap_write(sta32x->regmap, STA32X_B1CF1 + i, 337 ucontrol->value.bytes.data[i]); 338 if (numcoef == 1) 339 regmap_write(sta32x->regmap, STA32X_CFUD, cfud | 0x01); 340 else if (numcoef == 5) 341 regmap_write(sta32x->regmap, STA32X_CFUD, cfud | 0x02); 342 else 343 return -EINVAL; 344 345 return 0; 346} 347 348static int sta32x_sync_coef_shadow(struct snd_soc_component *component) 349{ 350 struct sta32x_priv *sta32x = snd_soc_component_get_drvdata(component); 351 unsigned int cfud; 352 int i; 353 354 /* preserve reserved bits in STA32X_CFUD */ 355 regmap_read(sta32x->regmap, STA32X_CFUD, &cfud); 356 cfud &= 0xf0; 357 358 for (i = 0; i < STA32X_COEF_COUNT; i++) { 359 regmap_write(sta32x->regmap, STA32X_CFADDR2, i); 360 regmap_write(sta32x->regmap, STA32X_B1CF1, 361 (sta32x->coef_shadow[i] >> 16) & 0xff); 362 regmap_write(sta32x->regmap, STA32X_B1CF2, 363 (sta32x->coef_shadow[i] >> 8) & 0xff); 364 regmap_write(sta32x->regmap, STA32X_B1CF3, 365 (sta32x->coef_shadow[i]) & 0xff); 366 /* 367 * chip documentation does not say if the bits are 368 * self-clearing, so do it explicitly 369 */ 370 regmap_write(sta32x->regmap, STA32X_CFUD, cfud); 371 regmap_write(sta32x->regmap, STA32X_CFUD, cfud | 0x01); 372 } 373 return 0; 374} 375 376static int sta32x_cache_sync(struct snd_soc_component *component) 377{ 378 struct sta32x_priv *sta32x = snd_soc_component_get_drvdata(component); 379 unsigned int mute; 380 int rc; 381 382 /* mute during register sync */ 383 regmap_read(sta32x->regmap, STA32X_MMUTE, &mute); 384 regmap_write(sta32x->regmap, STA32X_MMUTE, mute | STA32X_MMUTE_MMUTE); 385 sta32x_sync_coef_shadow(component); 386 rc = regcache_sync(sta32x->regmap); 387 regmap_write(sta32x->regmap, STA32X_MMUTE, mute); 388 return rc; 389} 390 391/* work around ESD issue where sta32x resets and loses all configuration */ 392static void sta32x_watchdog(struct work_struct *work) 393{ 394 struct sta32x_priv *sta32x = container_of(work, struct sta32x_priv, 395 watchdog_work.work); 396 struct snd_soc_component *component = sta32x->component; 397 unsigned int confa, confa_cached; 398 399 /* check if sta32x has reset itself */ 400 confa_cached = snd_soc_component_read(component, STA32X_CONFA); 401 regcache_cache_bypass(sta32x->regmap, true); 402 confa = snd_soc_component_read(component, STA32X_CONFA); 403 regcache_cache_bypass(sta32x->regmap, false); 404 if (confa != confa_cached) { 405 regcache_mark_dirty(sta32x->regmap); 406 sta32x_cache_sync(component); 407 } 408 409 if (!sta32x->shutdown) 410 queue_delayed_work(system_power_efficient_wq, 411 &sta32x->watchdog_work, 412 round_jiffies_relative(HZ)); 413} 414 415static void sta32x_watchdog_start(struct sta32x_priv *sta32x) 416{ 417 if (sta32x->pdata->needs_esd_watchdog) { 418 sta32x->shutdown = 0; 419 queue_delayed_work(system_power_efficient_wq, 420 &sta32x->watchdog_work, 421 round_jiffies_relative(HZ)); 422 } 423} 424 425static void sta32x_watchdog_stop(struct sta32x_priv *sta32x) 426{ 427 if (sta32x->pdata->needs_esd_watchdog) { 428 sta32x->shutdown = 1; 429 cancel_delayed_work_sync(&sta32x->watchdog_work); 430 } 431} 432 433#define SINGLE_COEF(xname, index) \ 434{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ 435 .info = sta32x_coefficient_info, \ 436 .get = sta32x_coefficient_get,\ 437 .put = sta32x_coefficient_put, \ 438 .private_value = index | (1 << 16) } 439 440#define BIQUAD_COEFS(xname, index) \ 441{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ 442 .info = sta32x_coefficient_info, \ 443 .get = sta32x_coefficient_get,\ 444 .put = sta32x_coefficient_put, \ 445 .private_value = index | (5 << 16) } 446 447static const struct snd_kcontrol_new sta32x_snd_controls[] = { 448SOC_SINGLE_TLV("Master Volume", STA32X_MVOL, 0, 0xff, 1, mvol_tlv), 449SOC_SINGLE("Master Switch", STA32X_MMUTE, 0, 1, 1), 450SOC_SINGLE("Ch1 Switch", STA32X_MMUTE, 1, 1, 1), 451SOC_SINGLE("Ch2 Switch", STA32X_MMUTE, 2, 1, 1), 452SOC_SINGLE("Ch3 Switch", STA32X_MMUTE, 3, 1, 1), 453SOC_SINGLE_TLV("Ch1 Volume", STA32X_C1VOL, 0, 0xff, 1, chvol_tlv), 454SOC_SINGLE_TLV("Ch2 Volume", STA32X_C2VOL, 0, 0xff, 1, chvol_tlv), 455SOC_SINGLE_TLV("Ch3 Volume", STA32X_C3VOL, 0, 0xff, 1, chvol_tlv), 456SOC_SINGLE("De-emphasis Filter Switch", STA32X_CONFD, STA32X_CONFD_DEMP_SHIFT, 1, 0), 457SOC_ENUM("Compressor/Limiter Switch", sta32x_drc_ac_enum), 458SOC_SINGLE("Miami Mode Switch", STA32X_CONFD, STA32X_CONFD_MME_SHIFT, 1, 0), 459SOC_SINGLE("Zero Cross Switch", STA32X_CONFE, STA32X_CONFE_ZCE_SHIFT, 1, 0), 460SOC_SINGLE("Soft Ramp Switch", STA32X_CONFE, STA32X_CONFE_SVE_SHIFT, 1, 0), 461SOC_SINGLE("Auto-Mute Switch", STA32X_CONFF, STA32X_CONFF_IDE_SHIFT, 1, 0), 462SOC_ENUM("Automode EQ", sta32x_auto_eq_enum), 463SOC_ENUM("Automode GC", sta32x_auto_gc_enum), 464SOC_ENUM("Automode XO", sta32x_auto_xo_enum), 465SOC_ENUM("Preset EQ", sta32x_preset_eq_enum), 466SOC_SINGLE("Ch1 Tone Control Bypass Switch", STA32X_C1CFG, STA32X_CxCFG_TCB_SHIFT, 1, 0), 467SOC_SINGLE("Ch2 Tone Control Bypass Switch", STA32X_C2CFG, STA32X_CxCFG_TCB_SHIFT, 1, 0), 468SOC_SINGLE("Ch1 EQ Bypass Switch", STA32X_C1CFG, STA32X_CxCFG_EQBP_SHIFT, 1, 0), 469SOC_SINGLE("Ch2 EQ Bypass Switch", STA32X_C2CFG, STA32X_CxCFG_EQBP_SHIFT, 1, 0), 470SOC_SINGLE("Ch1 Master Volume Bypass Switch", STA32X_C1CFG, STA32X_CxCFG_VBP_SHIFT, 1, 0), 471SOC_SINGLE("Ch2 Master Volume Bypass Switch", STA32X_C1CFG, STA32X_CxCFG_VBP_SHIFT, 1, 0), 472SOC_SINGLE("Ch3 Master Volume Bypass Switch", STA32X_C1CFG, STA32X_CxCFG_VBP_SHIFT, 1, 0), 473SOC_ENUM("Ch1 Limiter Select", sta32x_limiter_ch1_enum), 474SOC_ENUM("Ch2 Limiter Select", sta32x_limiter_ch2_enum), 475SOC_ENUM("Ch3 Limiter Select", sta32x_limiter_ch3_enum), 476SOC_SINGLE_TLV("Bass Tone Control", STA32X_TONE, STA32X_TONE_BTC_SHIFT, 15, 0, tone_tlv), 477SOC_SINGLE_TLV("Treble Tone Control", STA32X_TONE, STA32X_TONE_TTC_SHIFT, 15, 0, tone_tlv), 478SOC_ENUM("Limiter1 Attack Rate (dB/ms)", sta32x_limiter1_attack_rate_enum), 479SOC_ENUM("Limiter2 Attack Rate (dB/ms)", sta32x_limiter2_attack_rate_enum), 480SOC_ENUM("Limiter1 Release Rate (dB/ms)", sta32x_limiter1_release_rate_enum), 481SOC_ENUM("Limiter2 Release Rate (dB/ms)", sta32x_limiter2_release_rate_enum), 482 483/* depending on mode, the attack/release thresholds have 484 * two different enum definitions; provide both 485 */ 486SOC_SINGLE_TLV("Limiter1 Attack Threshold (AC Mode)", STA32X_L1ATRT, STA32X_LxA_SHIFT, 487 16, 0, sta32x_limiter_ac_attack_tlv), 488SOC_SINGLE_TLV("Limiter2 Attack Threshold (AC Mode)", STA32X_L2ATRT, STA32X_LxA_SHIFT, 489 16, 0, sta32x_limiter_ac_attack_tlv), 490SOC_SINGLE_TLV("Limiter1 Release Threshold (AC Mode)", STA32X_L1ATRT, STA32X_LxR_SHIFT, 491 16, 0, sta32x_limiter_ac_release_tlv), 492SOC_SINGLE_TLV("Limiter2 Release Threshold (AC Mode)", STA32X_L2ATRT, STA32X_LxR_SHIFT, 493 16, 0, sta32x_limiter_ac_release_tlv), 494SOC_SINGLE_TLV("Limiter1 Attack Threshold (DRC Mode)", STA32X_L1ATRT, STA32X_LxA_SHIFT, 495 16, 0, sta32x_limiter_drc_attack_tlv), 496SOC_SINGLE_TLV("Limiter2 Attack Threshold (DRC Mode)", STA32X_L2ATRT, STA32X_LxA_SHIFT, 497 16, 0, sta32x_limiter_drc_attack_tlv), 498SOC_SINGLE_TLV("Limiter1 Release Threshold (DRC Mode)", STA32X_L1ATRT, STA32X_LxR_SHIFT, 499 16, 0, sta32x_limiter_drc_release_tlv), 500SOC_SINGLE_TLV("Limiter2 Release Threshold (DRC Mode)", STA32X_L2ATRT, STA32X_LxR_SHIFT, 501 16, 0, sta32x_limiter_drc_release_tlv), 502 503BIQUAD_COEFS("Ch1 - Biquad 1", 0), 504BIQUAD_COEFS("Ch1 - Biquad 2", 5), 505BIQUAD_COEFS("Ch1 - Biquad 3", 10), 506BIQUAD_COEFS("Ch1 - Biquad 4", 15), 507BIQUAD_COEFS("Ch2 - Biquad 1", 20), 508BIQUAD_COEFS("Ch2 - Biquad 2", 25), 509BIQUAD_COEFS("Ch2 - Biquad 3", 30), 510BIQUAD_COEFS("Ch2 - Biquad 4", 35), 511BIQUAD_COEFS("High-pass", 40), 512BIQUAD_COEFS("Low-pass", 45), 513SINGLE_COEF("Ch1 - Prescale", 50), 514SINGLE_COEF("Ch2 - Prescale", 51), 515SINGLE_COEF("Ch1 - Postscale", 52), 516SINGLE_COEF("Ch2 - Postscale", 53), 517SINGLE_COEF("Ch3 - Postscale", 54), 518SINGLE_COEF("Thermal warning - Postscale", 55), 519SINGLE_COEF("Ch1 - Mix 1", 56), 520SINGLE_COEF("Ch1 - Mix 2", 57), 521SINGLE_COEF("Ch2 - Mix 1", 58), 522SINGLE_COEF("Ch2 - Mix 2", 59), 523SINGLE_COEF("Ch3 - Mix 1", 60), 524SINGLE_COEF("Ch3 - Mix 2", 61), 525}; 526 527static const struct snd_soc_dapm_widget sta32x_dapm_widgets[] = { 528SND_SOC_DAPM_DAC("DAC", "Playback", SND_SOC_NOPM, 0, 0), 529SND_SOC_DAPM_OUTPUT("LEFT"), 530SND_SOC_DAPM_OUTPUT("RIGHT"), 531SND_SOC_DAPM_OUTPUT("SUB"), 532}; 533 534static const struct snd_soc_dapm_route sta32x_dapm_routes[] = { 535 { "LEFT", NULL, "DAC" }, 536 { "RIGHT", NULL, "DAC" }, 537 { "SUB", NULL, "DAC" }, 538}; 539 540/* MCLK interpolation ratio per fs */ 541static struct { 542 int fs; 543 int ir; 544} interpolation_ratios[] = { 545 { 32000, 0 }, 546 { 44100, 0 }, 547 { 48000, 0 }, 548 { 88200, 1 }, 549 { 96000, 1 }, 550 { 176400, 2 }, 551 { 192000, 2 }, 552}; 553 554/* MCLK to fs clock ratios */ 555static int mcs_ratio_table[3][7] = { 556 { 768, 512, 384, 256, 128, 576, 0 }, 557 { 384, 256, 192, 128, 64, 0 }, 558 { 384, 256, 192, 128, 64, 0 }, 559}; 560 561/** 562 * sta32x_set_dai_sysclk - configure MCLK 563 * @codec_dai: the codec DAI 564 * @clk_id: the clock ID (ignored) 565 * @freq: the MCLK input frequency 566 * @dir: the clock direction (ignored) 567 * 568 * The value of MCLK is used to determine which sample rates are supported 569 * by the STA32X, based on the mclk_ratios table. 570 * 571 * This function must be called by the machine driver's 'startup' function, 572 * otherwise the list of supported sample rates will not be available in 573 * time for ALSA. 574 * 575 * For setups with variable MCLKs, pass 0 as 'freq' argument. This will cause 576 * theoretically possible sample rates to be enabled. Call it again with a 577 * proper value set one the external clock is set (most probably you would do 578 * that from a machine's driver 'hw_param' hook. 579 */ 580static int sta32x_set_dai_sysclk(struct snd_soc_dai *codec_dai, 581 int clk_id, unsigned int freq, int dir) 582{ 583 struct snd_soc_component *component = codec_dai->component; 584 struct sta32x_priv *sta32x = snd_soc_component_get_drvdata(component); 585 586 dev_dbg(component->dev, "mclk=%u\n", freq); 587 sta32x->mclk = freq; 588 589 return 0; 590} 591 592/** 593 * sta32x_set_dai_fmt - configure the codec for the selected audio format 594 * @codec_dai: the codec DAI 595 * @fmt: a SND_SOC_DAIFMT_x value indicating the data format 596 * 597 * This function takes a bitmask of SND_SOC_DAIFMT_x bits and programs the 598 * codec accordingly. 599 */ 600static int sta32x_set_dai_fmt(struct snd_soc_dai *codec_dai, 601 unsigned int fmt) 602{ 603 struct snd_soc_component *component = codec_dai->component; 604 struct sta32x_priv *sta32x = snd_soc_component_get_drvdata(component); 605 u8 confb = 0; 606 607 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 608 case SND_SOC_DAIFMT_CBS_CFS: 609 break; 610 default: 611 return -EINVAL; 612 } 613 614 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 615 case SND_SOC_DAIFMT_I2S: 616 case SND_SOC_DAIFMT_RIGHT_J: 617 case SND_SOC_DAIFMT_LEFT_J: 618 sta32x->format = fmt & SND_SOC_DAIFMT_FORMAT_MASK; 619 break; 620 default: 621 return -EINVAL; 622 } 623 624 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 625 case SND_SOC_DAIFMT_NB_NF: 626 confb |= STA32X_CONFB_C2IM; 627 break; 628 case SND_SOC_DAIFMT_NB_IF: 629 confb |= STA32X_CONFB_C1IM; 630 break; 631 default: 632 return -EINVAL; 633 } 634 635 return regmap_update_bits(sta32x->regmap, STA32X_CONFB, 636 STA32X_CONFB_C1IM | STA32X_CONFB_C2IM, confb); 637} 638 639/** 640 * sta32x_hw_params - program the STA32X with the given hardware parameters. 641 * @substream: the audio stream 642 * @params: the hardware parameters to set 643 * @dai: the SOC DAI (ignored) 644 * 645 * This function programs the hardware with the values provided. 646 * Specifically, the sample rate and the data format. 647 */ 648static int sta32x_hw_params(struct snd_pcm_substream *substream, 649 struct snd_pcm_hw_params *params, 650 struct snd_soc_dai *dai) 651{ 652 struct snd_soc_component *component = dai->component; 653 struct sta32x_priv *sta32x = snd_soc_component_get_drvdata(component); 654 int i, mcs = -EINVAL, ir = -EINVAL; 655 unsigned int confa, confb; 656 unsigned int rate, ratio; 657 int ret; 658 659 if (!sta32x->mclk) { 660 dev_err(component->dev, 661 "sta32x->mclk is unset. Unable to determine ratio\n"); 662 return -EIO; 663 } 664 665 rate = params_rate(params); 666 ratio = sta32x->mclk / rate; 667 dev_dbg(component->dev, "rate: %u, ratio: %u\n", rate, ratio); 668 669 for (i = 0; i < ARRAY_SIZE(interpolation_ratios); i++) { 670 if (interpolation_ratios[i].fs == rate) { 671 ir = interpolation_ratios[i].ir; 672 break; 673 } 674 } 675 676 if (ir < 0) { 677 dev_err(component->dev, "Unsupported samplerate: %u\n", rate); 678 return -EINVAL; 679 } 680 681 for (i = 0; i < 6; i++) { 682 if (mcs_ratio_table[ir][i] == ratio) { 683 mcs = i; 684 break; 685 } 686 } 687 688 if (mcs < 0) { 689 dev_err(component->dev, "Unresolvable ratio: %u\n", ratio); 690 return -EINVAL; 691 } 692 693 confa = (ir << STA32X_CONFA_IR_SHIFT) | 694 (mcs << STA32X_CONFA_MCS_SHIFT); 695 confb = 0; 696 697 switch (params_width(params)) { 698 case 24: 699 dev_dbg(component->dev, "24bit\n"); 700 fallthrough; 701 case 32: 702 dev_dbg(component->dev, "24bit or 32bit\n"); 703 switch (sta32x->format) { 704 case SND_SOC_DAIFMT_I2S: 705 confb |= 0x0; 706 break; 707 case SND_SOC_DAIFMT_LEFT_J: 708 confb |= 0x1; 709 break; 710 case SND_SOC_DAIFMT_RIGHT_J: 711 confb |= 0x2; 712 break; 713 } 714 715 break; 716 case 20: 717 dev_dbg(component->dev, "20bit\n"); 718 switch (sta32x->format) { 719 case SND_SOC_DAIFMT_I2S: 720 confb |= 0x4; 721 break; 722 case SND_SOC_DAIFMT_LEFT_J: 723 confb |= 0x5; 724 break; 725 case SND_SOC_DAIFMT_RIGHT_J: 726 confb |= 0x6; 727 break; 728 } 729 730 break; 731 case 18: 732 dev_dbg(component->dev, "18bit\n"); 733 switch (sta32x->format) { 734 case SND_SOC_DAIFMT_I2S: 735 confb |= 0x8; 736 break; 737 case SND_SOC_DAIFMT_LEFT_J: 738 confb |= 0x9; 739 break; 740 case SND_SOC_DAIFMT_RIGHT_J: 741 confb |= 0xa; 742 break; 743 } 744 745 break; 746 case 16: 747 dev_dbg(component->dev, "16bit\n"); 748 switch (sta32x->format) { 749 case SND_SOC_DAIFMT_I2S: 750 confb |= 0x0; 751 break; 752 case SND_SOC_DAIFMT_LEFT_J: 753 confb |= 0xd; 754 break; 755 case SND_SOC_DAIFMT_RIGHT_J: 756 confb |= 0xe; 757 break; 758 } 759 760 break; 761 default: 762 return -EINVAL; 763 } 764 765 ret = regmap_update_bits(sta32x->regmap, STA32X_CONFA, 766 STA32X_CONFA_MCS_MASK | STA32X_CONFA_IR_MASK, 767 confa); 768 if (ret < 0) 769 return ret; 770 771 ret = regmap_update_bits(sta32x->regmap, STA32X_CONFB, 772 STA32X_CONFB_SAI_MASK | STA32X_CONFB_SAIFB, 773 confb); 774 if (ret < 0) 775 return ret; 776 777 return 0; 778} 779 780static int sta32x_startup_sequence(struct sta32x_priv *sta32x) 781{ 782 if (sta32x->gpiod_nreset) { 783 gpiod_set_value(sta32x->gpiod_nreset, 0); 784 mdelay(1); 785 gpiod_set_value(sta32x->gpiod_nreset, 1); 786 mdelay(1); 787 } 788 789 return 0; 790} 791 792/** 793 * sta32x_set_bias_level - DAPM callback 794 * @component: the component device 795 * @level: DAPM power level 796 * 797 * This is called by ALSA to put the component into low power mode 798 * or to wake it up. If the component is powered off completely 799 * all registers must be restored after power on. 800 */ 801static int sta32x_set_bias_level(struct snd_soc_component *component, 802 enum snd_soc_bias_level level) 803{ 804 int ret; 805 struct sta32x_priv *sta32x = snd_soc_component_get_drvdata(component); 806 807 dev_dbg(component->dev, "level = %d\n", level); 808 switch (level) { 809 case SND_SOC_BIAS_ON: 810 break; 811 812 case SND_SOC_BIAS_PREPARE: 813 /* Full power on */ 814 regmap_update_bits(sta32x->regmap, STA32X_CONFF, 815 STA32X_CONFF_PWDN | STA32X_CONFF_EAPD, 816 STA32X_CONFF_PWDN | STA32X_CONFF_EAPD); 817 break; 818 819 case SND_SOC_BIAS_STANDBY: 820 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) { 821 ret = regulator_bulk_enable(ARRAY_SIZE(sta32x->supplies), 822 sta32x->supplies); 823 if (ret != 0) { 824 dev_err(component->dev, 825 "Failed to enable supplies: %d\n", ret); 826 return ret; 827 } 828 829 sta32x_startup_sequence(sta32x); 830 sta32x_cache_sync(component); 831 sta32x_watchdog_start(sta32x); 832 } 833 834 /* Power down */ 835 regmap_update_bits(sta32x->regmap, STA32X_CONFF, 836 STA32X_CONFF_PWDN | STA32X_CONFF_EAPD, 837 0); 838 839 break; 840 841 case SND_SOC_BIAS_OFF: 842 /* The chip runs through the power down sequence for us. */ 843 regmap_update_bits(sta32x->regmap, STA32X_CONFF, 844 STA32X_CONFF_PWDN | STA32X_CONFF_EAPD, 0); 845 msleep(300); 846 sta32x_watchdog_stop(sta32x); 847 848 gpiod_set_value(sta32x->gpiod_nreset, 0); 849 850 regulator_bulk_disable(ARRAY_SIZE(sta32x->supplies), 851 sta32x->supplies); 852 break; 853 } 854 return 0; 855} 856 857static const struct snd_soc_dai_ops sta32x_dai_ops = { 858 .hw_params = sta32x_hw_params, 859 .set_sysclk = sta32x_set_dai_sysclk, 860 .set_fmt = sta32x_set_dai_fmt, 861}; 862 863static struct snd_soc_dai_driver sta32x_dai = { 864 .name = "sta32x-hifi", 865 .playback = { 866 .stream_name = "Playback", 867 .channels_min = 2, 868 .channels_max = 2, 869 .rates = STA32X_RATES, 870 .formats = STA32X_FORMATS, 871 }, 872 .ops = &sta32x_dai_ops, 873}; 874 875static int sta32x_probe(struct snd_soc_component *component) 876{ 877 struct sta32x_priv *sta32x = snd_soc_component_get_drvdata(component); 878 struct sta32x_platform_data *pdata = sta32x->pdata; 879 int i, ret = 0, thermal = 0; 880 881 sta32x->component = component; 882 883 if (sta32x->xti_clk) { 884 ret = clk_prepare_enable(sta32x->xti_clk); 885 if (ret != 0) { 886 dev_err(component->dev, 887 "Failed to enable clock: %d\n", ret); 888 return ret; 889 } 890 } 891 892 ret = regulator_bulk_enable(ARRAY_SIZE(sta32x->supplies), 893 sta32x->supplies); 894 if (ret != 0) { 895 dev_err(component->dev, "Failed to enable supplies: %d\n", ret); 896 goto err_clk_disable_unprepare; 897 } 898 899 ret = sta32x_startup_sequence(sta32x); 900 if (ret < 0) { 901 dev_err(component->dev, "Failed to startup device\n"); 902 goto err_regulator_bulk_disable; 903 } 904 905 /* CONFA */ 906 if (!pdata->thermal_warning_recovery) 907 thermal |= STA32X_CONFA_TWAB; 908 if (!pdata->thermal_warning_adjustment) 909 thermal |= STA32X_CONFA_TWRB; 910 if (!pdata->fault_detect_recovery) 911 thermal |= STA32X_CONFA_FDRB; 912 regmap_update_bits(sta32x->regmap, STA32X_CONFA, 913 STA32X_CONFA_TWAB | STA32X_CONFA_TWRB | 914 STA32X_CONFA_FDRB, 915 thermal); 916 917 /* CONFC */ 918 regmap_update_bits(sta32x->regmap, STA32X_CONFC, 919 STA32X_CONFC_CSZ_MASK, 920 pdata->drop_compensation_ns 921 << STA32X_CONFC_CSZ_SHIFT); 922 923 /* CONFE */ 924 regmap_update_bits(sta32x->regmap, STA32X_CONFE, 925 STA32X_CONFE_MPCV, 926 pdata->max_power_use_mpcc ? 927 STA32X_CONFE_MPCV : 0); 928 regmap_update_bits(sta32x->regmap, STA32X_CONFE, 929 STA32X_CONFE_MPC, 930 pdata->max_power_correction ? 931 STA32X_CONFE_MPC : 0); 932 regmap_update_bits(sta32x->regmap, STA32X_CONFE, 933 STA32X_CONFE_AME, 934 pdata->am_reduction_mode ? 935 STA32X_CONFE_AME : 0); 936 regmap_update_bits(sta32x->regmap, STA32X_CONFE, 937 STA32X_CONFE_PWMS, 938 pdata->odd_pwm_speed_mode ? 939 STA32X_CONFE_PWMS : 0); 940 941 /* CONFF */ 942 regmap_update_bits(sta32x->regmap, STA32X_CONFF, 943 STA32X_CONFF_IDE, 944 pdata->invalid_input_detect_mute ? 945 STA32X_CONFF_IDE : 0); 946 947 /* select output configuration */ 948 regmap_update_bits(sta32x->regmap, STA32X_CONFF, 949 STA32X_CONFF_OCFG_MASK, 950 pdata->output_conf 951 << STA32X_CONFF_OCFG_SHIFT); 952 953 /* channel to output mapping */ 954 regmap_update_bits(sta32x->regmap, STA32X_C1CFG, 955 STA32X_CxCFG_OM_MASK, 956 pdata->ch1_output_mapping 957 << STA32X_CxCFG_OM_SHIFT); 958 regmap_update_bits(sta32x->regmap, STA32X_C2CFG, 959 STA32X_CxCFG_OM_MASK, 960 pdata->ch2_output_mapping 961 << STA32X_CxCFG_OM_SHIFT); 962 regmap_update_bits(sta32x->regmap, STA32X_C3CFG, 963 STA32X_CxCFG_OM_MASK, 964 pdata->ch3_output_mapping 965 << STA32X_CxCFG_OM_SHIFT); 966 967 /* initialize coefficient shadow RAM with reset values */ 968 for (i = 4; i <= 49; i += 5) 969 sta32x->coef_shadow[i] = 0x400000; 970 for (i = 50; i <= 54; i++) 971 sta32x->coef_shadow[i] = 0x7fffff; 972 sta32x->coef_shadow[55] = 0x5a9df7; 973 sta32x->coef_shadow[56] = 0x7fffff; 974 sta32x->coef_shadow[59] = 0x7fffff; 975 sta32x->coef_shadow[60] = 0x400000; 976 sta32x->coef_shadow[61] = 0x400000; 977 978 if (sta32x->pdata->needs_esd_watchdog) 979 INIT_DELAYED_WORK(&sta32x->watchdog_work, sta32x_watchdog); 980 981 snd_soc_component_force_bias_level(component, SND_SOC_BIAS_STANDBY); 982 /* Bias level configuration will have done an extra enable */ 983 regulator_bulk_disable(ARRAY_SIZE(sta32x->supplies), sta32x->supplies); 984 985 return 0; 986 987err_regulator_bulk_disable: 988 regulator_bulk_disable(ARRAY_SIZE(sta32x->supplies), sta32x->supplies); 989err_clk_disable_unprepare: 990 if (sta32x->xti_clk) 991 clk_disable_unprepare(sta32x->xti_clk); 992 return ret; 993} 994 995static void sta32x_remove(struct snd_soc_component *component) 996{ 997 struct sta32x_priv *sta32x = snd_soc_component_get_drvdata(component); 998 999 sta32x_watchdog_stop(sta32x); 1000 regulator_bulk_disable(ARRAY_SIZE(sta32x->supplies), sta32x->supplies); 1001 1002 if (sta32x->xti_clk) 1003 clk_disable_unprepare(sta32x->xti_clk); 1004} 1005 1006static const struct snd_soc_component_driver sta32x_component = { 1007 .probe = sta32x_probe, 1008 .remove = sta32x_remove, 1009 .set_bias_level = sta32x_set_bias_level, 1010 .controls = sta32x_snd_controls, 1011 .num_controls = ARRAY_SIZE(sta32x_snd_controls), 1012 .dapm_widgets = sta32x_dapm_widgets, 1013 .num_dapm_widgets = ARRAY_SIZE(sta32x_dapm_widgets), 1014 .dapm_routes = sta32x_dapm_routes, 1015 .num_dapm_routes = ARRAY_SIZE(sta32x_dapm_routes), 1016 .suspend_bias_off = 1, 1017 .idle_bias_on = 1, 1018 .use_pmdown_time = 1, 1019 .endianness = 1, 1020 .non_legacy_dai_naming = 1, 1021}; 1022 1023static const struct regmap_config sta32x_regmap = { 1024 .reg_bits = 8, 1025 .val_bits = 8, 1026 .max_register = STA32X_FDRC2, 1027 .reg_defaults = sta32x_regs, 1028 .num_reg_defaults = ARRAY_SIZE(sta32x_regs), 1029 .cache_type = REGCACHE_RBTREE, 1030 .wr_table = &sta32x_write_regs, 1031 .rd_table = &sta32x_read_regs, 1032 .volatile_table = &sta32x_volatile_regs, 1033}; 1034 1035#ifdef CONFIG_OF 1036static const struct of_device_id st32x_dt_ids[] = { 1037 { .compatible = "st,sta32x", }, 1038 { } 1039}; 1040MODULE_DEVICE_TABLE(of, st32x_dt_ids); 1041 1042static int sta32x_probe_dt(struct device *dev, struct sta32x_priv *sta32x) 1043{ 1044 struct device_node *np = dev->of_node; 1045 struct sta32x_platform_data *pdata; 1046 u16 tmp; 1047 1048 pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); 1049 if (!pdata) 1050 return -ENOMEM; 1051 1052 of_property_read_u8(np, "st,output-conf", 1053 &pdata->output_conf); 1054 of_property_read_u8(np, "st,ch1-output-mapping", 1055 &pdata->ch1_output_mapping); 1056 of_property_read_u8(np, "st,ch2-output-mapping", 1057 &pdata->ch2_output_mapping); 1058 of_property_read_u8(np, "st,ch3-output-mapping", 1059 &pdata->ch3_output_mapping); 1060 1061 if (of_get_property(np, "st,fault-detect-recovery", NULL)) 1062 pdata->fault_detect_recovery = 1; 1063 if (of_get_property(np, "st,thermal-warning-recovery", NULL)) 1064 pdata->thermal_warning_recovery = 1; 1065 if (of_get_property(np, "st,thermal-warning-adjustment", NULL)) 1066 pdata->thermal_warning_adjustment = 1; 1067 if (of_get_property(np, "st,needs_esd_watchdog", NULL)) 1068 pdata->needs_esd_watchdog = 1; 1069 1070 tmp = 140; 1071 of_property_read_u16(np, "st,drop-compensation-ns", &tmp); 1072 pdata->drop_compensation_ns = clamp_t(u16, tmp, 0, 300) / 20; 1073 1074 /* CONFE */ 1075 if (of_get_property(np, "st,max-power-use-mpcc", NULL)) 1076 pdata->max_power_use_mpcc = 1; 1077 1078 if (of_get_property(np, "st,max-power-correction", NULL)) 1079 pdata->max_power_correction = 1; 1080 1081 if (of_get_property(np, "st,am-reduction-mode", NULL)) 1082 pdata->am_reduction_mode = 1; 1083 1084 if (of_get_property(np, "st,odd-pwm-speed-mode", NULL)) 1085 pdata->odd_pwm_speed_mode = 1; 1086 1087 /* CONFF */ 1088 if (of_get_property(np, "st,invalid-input-detect-mute", NULL)) 1089 pdata->invalid_input_detect_mute = 1; 1090 1091 sta32x->pdata = pdata; 1092 1093 return 0; 1094} 1095#endif 1096 1097static int sta32x_i2c_probe(struct i2c_client *i2c, 1098 const struct i2c_device_id *id) 1099{ 1100 struct device *dev = &i2c->dev; 1101 struct sta32x_priv *sta32x; 1102 int ret, i; 1103 1104 sta32x = devm_kzalloc(&i2c->dev, sizeof(struct sta32x_priv), 1105 GFP_KERNEL); 1106 if (!sta32x) 1107 return -ENOMEM; 1108 1109 mutex_init(&sta32x->coeff_lock); 1110 sta32x->pdata = dev_get_platdata(dev); 1111 1112#ifdef CONFIG_OF 1113 if (dev->of_node) { 1114 ret = sta32x_probe_dt(dev, sta32x); 1115 if (ret < 0) 1116 return ret; 1117 } 1118#endif 1119 1120 /* Clock */ 1121 sta32x->xti_clk = devm_clk_get(dev, "xti"); 1122 if (IS_ERR(sta32x->xti_clk)) { 1123 ret = PTR_ERR(sta32x->xti_clk); 1124 1125 if (ret == -EPROBE_DEFER) 1126 return ret; 1127 1128 sta32x->xti_clk = NULL; 1129 } 1130 1131 /* GPIOs */ 1132 sta32x->gpiod_nreset = devm_gpiod_get_optional(dev, "reset", 1133 GPIOD_OUT_LOW); 1134 if (IS_ERR(sta32x->gpiod_nreset)) 1135 return PTR_ERR(sta32x->gpiod_nreset); 1136 1137 /* regulators */ 1138 for (i = 0; i < ARRAY_SIZE(sta32x->supplies); i++) 1139 sta32x->supplies[i].supply = sta32x_supply_names[i]; 1140 1141 ret = devm_regulator_bulk_get(&i2c->dev, ARRAY_SIZE(sta32x->supplies), 1142 sta32x->supplies); 1143 if (ret != 0) { 1144 dev_err(&i2c->dev, "Failed to request supplies: %d\n", ret); 1145 return ret; 1146 } 1147 1148 sta32x->regmap = devm_regmap_init_i2c(i2c, &sta32x_regmap); 1149 if (IS_ERR(sta32x->regmap)) { 1150 ret = PTR_ERR(sta32x->regmap); 1151 dev_err(dev, "Failed to init regmap: %d\n", ret); 1152 return ret; 1153 } 1154 1155 i2c_set_clientdata(i2c, sta32x); 1156 1157 ret = devm_snd_soc_register_component(dev, &sta32x_component, 1158 &sta32x_dai, 1); 1159 if (ret < 0) 1160 dev_err(dev, "Failed to register component (%d)\n", ret); 1161 1162 return ret; 1163} 1164 1165static const struct i2c_device_id sta32x_i2c_id[] = { 1166 { "sta326", 0 }, 1167 { "sta328", 0 }, 1168 { "sta329", 0 }, 1169 { } 1170}; 1171MODULE_DEVICE_TABLE(i2c, sta32x_i2c_id); 1172 1173static struct i2c_driver sta32x_i2c_driver = { 1174 .driver = { 1175 .name = "sta32x", 1176 .of_match_table = of_match_ptr(st32x_dt_ids), 1177 }, 1178 .probe = sta32x_i2c_probe, 1179 .id_table = sta32x_i2c_id, 1180}; 1181 1182module_i2c_driver(sta32x_i2c_driver); 1183 1184MODULE_DESCRIPTION("ASoC STA32X driver"); 1185MODULE_AUTHOR("Johannes Stezenbach <js@sig21.net>"); 1186MODULE_LICENSE("GPL"); 1187