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