1 // SPDX-License-Identifier: GPL-2.0 2 // 3 // rt711-sdw.c -- rt711 ALSA SoC audio driver 4 // 5 // Copyright(c) 2019 Realtek Semiconductor Corp. 6 // 7 // 8 9 #include <linux/delay.h> 10 #include <linux/device.h> 11 #include <linux/mod_devicetable.h> 12 #include <linux/soundwire/sdw.h> 13 #include <linux/soundwire/sdw_type.h> 14 #include <linux/module.h> 15 #include <linux/regmap.h> 16 #include <sound/soc.h> 17 #include "rt711.h" 18 #include "rt711-sdw.h" 19 20 static bool rt711_readable_register(struct device *dev, unsigned int reg) 21 { 22 switch (reg) { 23 case 0x00e0: 24 case 0x00f0: 25 case 0x2012 ... 0x2016: 26 case 0x201a ... 0x2027: 27 case 0x2029 ... 0x202a: 28 case 0x202d ... 0x2034: 29 case 0x2201 ... 0x2204: 30 case 0x2206 ... 0x2212: 31 case 0x2220 ... 0x2223: 32 case 0x2230 ... 0x2239: 33 case 0x2f01 ... 0x2f0f: 34 case 0x3000 ... 0x3fff: 35 case 0x7000 ... 0x7fff: 36 case 0x8300 ... 0x83ff: 37 case 0x9c00 ... 0x9cff: 38 case 0xb900 ... 0xb9ff: 39 case 0x752009: 40 case 0x752011: 41 case 0x75201a: 42 case 0x752045: 43 case 0x752046: 44 case 0x752048: 45 case 0x75204a: 46 case 0x75206b: 47 case 0x75206f: 48 case 0x752080: 49 case 0x752081: 50 case 0x752091: 51 case 0x755800: 52 return true; 53 default: 54 return false; 55 } 56 } 57 58 static bool rt711_volatile_register(struct device *dev, unsigned int reg) 59 { 60 switch (reg) { 61 case 0x2016: 62 case 0x201b: 63 case 0x201c: 64 case 0x201d: 65 case 0x201f: 66 case 0x2021: 67 case 0x2023: 68 case 0x2230: 69 case 0x2012 ... 0x2015: /* HD-A read */ 70 case 0x202d ... 0x202f: /* BRA */ 71 case 0x2201 ... 0x2212: /* i2c debug */ 72 case 0x2220 ... 0x2223: /* decoded HD-A */ 73 case 0x9c00 ... 0x9cff: 74 case 0xb900 ... 0xb9ff: 75 case 0xff01: 76 case 0x75201a: 77 case 0x752046: 78 case 0x752080: 79 case 0x752081: 80 case 0x755800: 81 return true; 82 default: 83 return false; 84 } 85 } 86 87 static int rt711_sdw_read(void *context, unsigned int reg, unsigned int *val) 88 { 89 struct device *dev = context; 90 struct rt711_priv *rt711 = dev_get_drvdata(dev); 91 unsigned int sdw_data_3, sdw_data_2, sdw_data_1, sdw_data_0; 92 unsigned int reg2 = 0, reg3 = 0, reg4 = 0, mask, nid, val2; 93 unsigned int is_hda_reg = 1, is_index_reg = 0; 94 int ret; 95 96 if (reg > 0xffff) 97 is_index_reg = 1; 98 99 mask = reg & 0xf000; 100 101 if (is_index_reg) { /* index registers */ 102 val2 = reg & 0xff; 103 reg = reg >> 8; 104 nid = reg & 0xff; 105 ret = regmap_write(rt711->sdw_regmap, reg, 0); 106 if (ret < 0) 107 return ret; 108 reg2 = reg + 0x1000; 109 reg2 |= 0x80; 110 ret = regmap_write(rt711->sdw_regmap, reg2, val2); 111 if (ret < 0) 112 return ret; 113 114 reg3 = RT711_PRIV_DATA_R_H | nid; 115 ret = regmap_write(rt711->sdw_regmap, 116 reg3, ((*val >> 8) & 0xff)); 117 if (ret < 0) 118 return ret; 119 reg4 = reg3 + 0x1000; 120 reg4 |= 0x80; 121 ret = regmap_write(rt711->sdw_regmap, reg4, (*val & 0xff)); 122 if (ret < 0) 123 return ret; 124 } else if (mask == 0x3000) { 125 reg += 0x8000; 126 ret = regmap_write(rt711->sdw_regmap, reg, *val); 127 if (ret < 0) 128 return ret; 129 } else if (mask == 0x7000) { 130 reg += 0x2000; 131 reg |= 0x800; 132 ret = regmap_write(rt711->sdw_regmap, 133 reg, ((*val >> 8) & 0xff)); 134 if (ret < 0) 135 return ret; 136 reg2 = reg + 0x1000; 137 reg2 |= 0x80; 138 ret = regmap_write(rt711->sdw_regmap, reg2, (*val & 0xff)); 139 if (ret < 0) 140 return ret; 141 } else if ((reg & 0xff00) == 0x8300) { /* for R channel */ 142 reg2 = reg - 0x1000; 143 reg2 &= ~0x80; 144 ret = regmap_write(rt711->sdw_regmap, 145 reg2, ((*val >> 8) & 0xff)); 146 if (ret < 0) 147 return ret; 148 ret = regmap_write(rt711->sdw_regmap, reg, (*val & 0xff)); 149 if (ret < 0) 150 return ret; 151 } else if (mask == 0x9000) { 152 ret = regmap_write(rt711->sdw_regmap, 153 reg, ((*val >> 8) & 0xff)); 154 if (ret < 0) 155 return ret; 156 reg2 = reg + 0x1000; 157 reg2 |= 0x80; 158 ret = regmap_write(rt711->sdw_regmap, reg2, (*val & 0xff)); 159 if (ret < 0) 160 return ret; 161 } else if (mask == 0xb000) { 162 ret = regmap_write(rt711->sdw_regmap, reg, *val); 163 if (ret < 0) 164 return ret; 165 } else { 166 ret = regmap_read(rt711->sdw_regmap, reg, val); 167 if (ret < 0) 168 return ret; 169 is_hda_reg = 0; 170 } 171 172 if (is_hda_reg || is_index_reg) { 173 sdw_data_3 = 0; 174 sdw_data_2 = 0; 175 sdw_data_1 = 0; 176 sdw_data_0 = 0; 177 ret = regmap_read(rt711->sdw_regmap, 178 RT711_READ_HDA_3, &sdw_data_3); 179 if (ret < 0) 180 return ret; 181 ret = regmap_read(rt711->sdw_regmap, 182 RT711_READ_HDA_2, &sdw_data_2); 183 if (ret < 0) 184 return ret; 185 ret = regmap_read(rt711->sdw_regmap, 186 RT711_READ_HDA_1, &sdw_data_1); 187 if (ret < 0) 188 return ret; 189 ret = regmap_read(rt711->sdw_regmap, 190 RT711_READ_HDA_0, &sdw_data_0); 191 if (ret < 0) 192 return ret; 193 *val = ((sdw_data_3 & 0xff) << 24) | 194 ((sdw_data_2 & 0xff) << 16) | 195 ((sdw_data_1 & 0xff) << 8) | (sdw_data_0 & 0xff); 196 } 197 198 if (is_hda_reg == 0) 199 dev_dbg(dev, "[%s] %04x => %08x\n", __func__, reg, *val); 200 else if (is_index_reg) 201 dev_dbg(dev, "[%s] %04x %04x %04x %04x => %08x\n", 202 __func__, reg, reg2, reg3, reg4, *val); 203 else 204 dev_dbg(dev, "[%s] %04x %04x => %08x\n", 205 __func__, reg, reg2, *val); 206 207 return 0; 208 } 209 210 static int rt711_sdw_write(void *context, unsigned int reg, unsigned int val) 211 { 212 struct device *dev = context; 213 struct rt711_priv *rt711 = dev_get_drvdata(dev); 214 unsigned int reg2 = 0, reg3, reg4, nid, mask, val2; 215 unsigned int is_index_reg = 0; 216 int ret; 217 218 if (reg > 0xffff) 219 is_index_reg = 1; 220 221 mask = reg & 0xf000; 222 223 if (is_index_reg) { /* index registers */ 224 val2 = reg & 0xff; 225 reg = reg >> 8; 226 nid = reg & 0xff; 227 ret = regmap_write(rt711->sdw_regmap, reg, 0); 228 if (ret < 0) 229 return ret; 230 reg2 = reg + 0x1000; 231 reg2 |= 0x80; 232 ret = regmap_write(rt711->sdw_regmap, reg2, val2); 233 if (ret < 0) 234 return ret; 235 236 reg3 = RT711_PRIV_DATA_W_H | nid; 237 ret = regmap_write(rt711->sdw_regmap, 238 reg3, ((val >> 8) & 0xff)); 239 if (ret < 0) 240 return ret; 241 reg4 = reg3 + 0x1000; 242 reg4 |= 0x80; 243 ret = regmap_write(rt711->sdw_regmap, reg4, (val & 0xff)); 244 if (ret < 0) 245 return ret; 246 is_index_reg = 1; 247 } else if (reg < 0x4fff) { 248 ret = regmap_write(rt711->sdw_regmap, reg, val); 249 if (ret < 0) 250 return ret; 251 } else if (reg == RT711_FUNC_RESET) { 252 ret = regmap_write(rt711->sdw_regmap, reg, val); 253 if (ret < 0) 254 return ret; 255 } else if (mask == 0x7000) { 256 ret = regmap_write(rt711->sdw_regmap, 257 reg, ((val >> 8) & 0xff)); 258 if (ret < 0) 259 return ret; 260 reg2 = reg + 0x1000; 261 reg2 |= 0x80; 262 ret = regmap_write(rt711->sdw_regmap, reg2, (val & 0xff)); 263 if (ret < 0) 264 return ret; 265 } else if ((reg & 0xff00) == 0x8300) { /* for R channel */ 266 reg2 = reg - 0x1000; 267 reg2 &= ~0x80; 268 ret = regmap_write(rt711->sdw_regmap, 269 reg2, ((val >> 8) & 0xff)); 270 if (ret < 0) 271 return ret; 272 ret = regmap_write(rt711->sdw_regmap, reg, (val & 0xff)); 273 if (ret < 0) 274 return ret; 275 } 276 277 if (reg2 == 0) 278 dev_dbg(dev, "[%s] %04x <= %04x\n", __func__, reg, val); 279 else if (is_index_reg) 280 dev_dbg(dev, "[%s] %04x %04x %04x %04x <= %04x %04x\n", 281 __func__, reg, reg2, reg3, reg4, val2, val); 282 else 283 dev_dbg(dev, "[%s] %04x %04x <= %04x\n", 284 __func__, reg, reg2, val); 285 286 return 0; 287 } 288 289 static const struct regmap_config rt711_regmap = { 290 .reg_bits = 24, 291 .val_bits = 32, 292 .readable_reg = rt711_readable_register, 293 .volatile_reg = rt711_volatile_register, 294 .max_register = 0x755800, 295 .reg_defaults = rt711_reg_defaults, 296 .num_reg_defaults = ARRAY_SIZE(rt711_reg_defaults), 297 .cache_type = REGCACHE_RBTREE, 298 .use_single_read = true, 299 .use_single_write = true, 300 .reg_read = rt711_sdw_read, 301 .reg_write = rt711_sdw_write, 302 }; 303 304 static const struct regmap_config rt711_sdw_regmap = { 305 .name = "sdw", 306 .reg_bits = 32, 307 .val_bits = 8, 308 .readable_reg = rt711_readable_register, 309 .max_register = 0xff01, 310 .cache_type = REGCACHE_NONE, 311 .use_single_read = true, 312 .use_single_write = true, 313 }; 314 315 static int rt711_update_status(struct sdw_slave *slave, 316 enum sdw_slave_status status) 317 { 318 struct rt711_priv *rt711 = dev_get_drvdata(&slave->dev); 319 320 /* Update the status */ 321 rt711->status = status; 322 323 if (status == SDW_SLAVE_UNATTACHED) 324 rt711->hw_init = false; 325 326 /* 327 * Perform initialization only if slave status is present and 328 * hw_init flag is false 329 */ 330 if (rt711->hw_init || rt711->status != SDW_SLAVE_ATTACHED) 331 return 0; 332 333 /* perform I/O transfers required for Slave initialization */ 334 return rt711_io_init(&slave->dev, slave); 335 } 336 337 static int rt711_read_prop(struct sdw_slave *slave) 338 { 339 struct sdw_slave_prop *prop = &slave->prop; 340 int nval, i; 341 u32 bit; 342 unsigned long addr; 343 struct sdw_dpn_prop *dpn; 344 345 prop->paging_support = false; 346 347 /* first we need to allocate memory for set bits in port lists */ 348 prop->source_ports = 0x14; /* BITMAP: 00010100 */ 349 prop->sink_ports = 0x8; /* BITMAP: 00001000 */ 350 351 nval = hweight32(prop->source_ports); 352 prop->src_dpn_prop = devm_kcalloc(&slave->dev, nval, 353 sizeof(*prop->src_dpn_prop), 354 GFP_KERNEL); 355 if (!prop->src_dpn_prop) 356 return -ENOMEM; 357 358 i = 0; 359 dpn = prop->src_dpn_prop; 360 addr = prop->source_ports; 361 for_each_set_bit(bit, &addr, 32) { 362 dpn[i].num = bit; 363 dpn[i].type = SDW_DPN_FULL; 364 dpn[i].simple_ch_prep_sm = true; 365 dpn[i].ch_prep_timeout = 10; 366 i++; 367 } 368 369 /* do this again for sink now */ 370 nval = hweight32(prop->sink_ports); 371 prop->sink_dpn_prop = devm_kcalloc(&slave->dev, nval, 372 sizeof(*prop->sink_dpn_prop), 373 GFP_KERNEL); 374 if (!prop->sink_dpn_prop) 375 return -ENOMEM; 376 377 i = 0; 378 dpn = prop->sink_dpn_prop; 379 addr = prop->sink_ports; 380 for_each_set_bit(bit, &addr, 32) { 381 dpn[i].num = bit; 382 dpn[i].type = SDW_DPN_FULL; 383 dpn[i].simple_ch_prep_sm = true; 384 dpn[i].ch_prep_timeout = 10; 385 i++; 386 } 387 388 /* set the timeout values */ 389 prop->clk_stop_timeout = 20; 390 391 /* wake-up event */ 392 prop->wake_capable = 1; 393 394 return 0; 395 } 396 397 static int rt711_bus_config(struct sdw_slave *slave, 398 struct sdw_bus_params *params) 399 { 400 struct rt711_priv *rt711 = dev_get_drvdata(&slave->dev); 401 int ret; 402 403 memcpy(&rt711->params, params, sizeof(*params)); 404 405 ret = rt711_clock_config(&slave->dev); 406 if (ret < 0) 407 dev_err(&slave->dev, "Invalid clk config"); 408 409 return ret; 410 } 411 412 static int rt711_interrupt_callback(struct sdw_slave *slave, 413 struct sdw_slave_intr_status *status) 414 { 415 struct rt711_priv *rt711 = dev_get_drvdata(&slave->dev); 416 417 dev_dbg(&slave->dev, 418 "%s control_port_stat=%x", __func__, status->control_port); 419 420 if (status->control_port & 0x4) { 421 mod_delayed_work(system_power_efficient_wq, 422 &rt711->jack_detect_work, msecs_to_jiffies(250)); 423 } 424 425 return 0; 426 } 427 428 static struct sdw_slave_ops rt711_slave_ops = { 429 .read_prop = rt711_read_prop, 430 .interrupt_callback = rt711_interrupt_callback, 431 .update_status = rt711_update_status, 432 .bus_config = rt711_bus_config, 433 }; 434 435 static int rt711_sdw_probe(struct sdw_slave *slave, 436 const struct sdw_device_id *id) 437 { 438 struct regmap *sdw_regmap, *regmap; 439 440 /* Regmap Initialization */ 441 sdw_regmap = devm_regmap_init_sdw(slave, &rt711_sdw_regmap); 442 if (!sdw_regmap) 443 return -EINVAL; 444 445 regmap = devm_regmap_init(&slave->dev, NULL, 446 &slave->dev, &rt711_regmap); 447 if (IS_ERR(regmap)) 448 return PTR_ERR(regmap); 449 450 rt711_init(&slave->dev, sdw_regmap, regmap, slave); 451 452 return 0; 453 } 454 455 static int rt711_sdw_remove(struct sdw_slave *slave) 456 { 457 struct rt711_priv *rt711 = dev_get_drvdata(&slave->dev); 458 459 if (rt711 && rt711->hw_init) { 460 cancel_delayed_work(&rt711->jack_detect_work); 461 cancel_delayed_work(&rt711->jack_btn_check_work); 462 cancel_work_sync(&rt711->calibration_work); 463 } 464 465 return 0; 466 } 467 468 static const struct sdw_device_id rt711_id[] = { 469 SDW_SLAVE_ENTRY(0x025d, 0x711, 0), 470 {}, 471 }; 472 MODULE_DEVICE_TABLE(sdw, rt711_id); 473 474 static int __maybe_unused rt711_dev_suspend(struct device *dev) 475 { 476 struct rt711_priv *rt711 = dev_get_drvdata(dev); 477 478 if (!rt711->hw_init) 479 return 0; 480 481 regcache_cache_only(rt711->regmap, true); 482 483 return 0; 484 } 485 486 #define RT711_PROBE_TIMEOUT 2000 487 488 static int __maybe_unused rt711_dev_resume(struct device *dev) 489 { 490 struct sdw_slave *slave = dev_to_sdw_dev(dev); 491 struct rt711_priv *rt711 = dev_get_drvdata(dev); 492 unsigned long time; 493 494 if (!rt711->hw_init) 495 return 0; 496 497 if (!slave->unattach_request) 498 goto regmap_sync; 499 500 time = wait_for_completion_timeout(&slave->initialization_complete, 501 msecs_to_jiffies(RT711_PROBE_TIMEOUT)); 502 if (!time) { 503 dev_err(&slave->dev, "Initialization not complete, timed out\n"); 504 return -ETIMEDOUT; 505 } 506 507 regmap_sync: 508 slave->unattach_request = 0; 509 regcache_cache_only(rt711->regmap, false); 510 regcache_sync_region(rt711->regmap, 0x3000, 0x8fff); 511 regcache_sync_region(rt711->regmap, 0x752009, 0x752091); 512 513 return 0; 514 } 515 516 static const struct dev_pm_ops rt711_pm = { 517 SET_SYSTEM_SLEEP_PM_OPS(rt711_dev_suspend, rt711_dev_resume) 518 SET_RUNTIME_PM_OPS(rt711_dev_suspend, rt711_dev_resume, NULL) 519 }; 520 521 static struct sdw_driver rt711_sdw_driver = { 522 .driver = { 523 .name = "rt711", 524 .owner = THIS_MODULE, 525 .pm = &rt711_pm, 526 }, 527 .probe = rt711_sdw_probe, 528 .remove = rt711_sdw_remove, 529 .ops = &rt711_slave_ops, 530 .id_table = rt711_id, 531 }; 532 module_sdw_driver(rt711_sdw_driver); 533 534 MODULE_DESCRIPTION("ASoC RT711 SDW driver"); 535 MODULE_AUTHOR("Shuming Fan <shumingf@realtek.com>"); 536 MODULE_LICENSE("GPL"); 537