1 // SPDX-License-Identifier: GPL-2.0-or-later 2 // 3 // sma1303.c -- sma1303 ALSA SoC Audio driver 4 // 5 // Copyright 2023 Iron Device Corporation 6 // 7 // Auther: Gyuhwa Park <gyuhwa.park@irondevice.com> 8 // Kiseok Jo <kiseok.jo@irondevice.com> 9 10 #include <linux/module.h> 11 #include <linux/moduleparam.h> 12 #include <linux/kernel.h> 13 #include <linux/init.h> 14 #include <linux/delay.h> 15 #include <linux/pm.h> 16 #include <linux/i2c.h> 17 #include <linux/regmap.h> 18 #include <sound/core.h> 19 #include <sound/pcm.h> 20 #include <sound/pcm_params.h> 21 #include <sound/soc.h> 22 #include <sound/initval.h> 23 #include <sound/tlv.h> 24 #include <linux/of_device.h> 25 #include <linux/slab.h> 26 #include <asm/div64.h> 27 28 #include "sma1303.h" 29 30 #define CHECK_PERIOD_TIME 1 /* sec per HZ */ 31 #define MAX_CONTROL_NAME 48 32 33 #define PLL_MATCH(_input_clk_name, _output_clk_name, _input_clk,\ 34 _post_n, _n, _vco, _p_cp)\ 35 {\ 36 .input_clk_name = _input_clk_name,\ 37 .output_clk_name = _output_clk_name,\ 38 .input_clk = _input_clk,\ 39 .post_n = _post_n,\ 40 .n = _n,\ 41 .vco = _vco,\ 42 .p_cp = _p_cp,\ 43 } 44 45 enum sma1303_type { 46 SMA1303, 47 }; 48 49 struct sma1303_pll_match { 50 char *input_clk_name; 51 char *output_clk_name; 52 unsigned int input_clk; 53 unsigned int post_n; 54 unsigned int n; 55 unsigned int vco; 56 unsigned int p_cp; 57 }; 58 59 struct sma1303_priv { 60 enum sma1303_type devtype; 61 struct attribute_group *attr_grp; 62 struct delayed_work check_fault_work; 63 struct device *dev; 64 struct kobject *kobj; 65 struct regmap *regmap; 66 struct sma1303_pll_match *pll_matches; 67 bool amp_power_status; 68 bool force_mute_status; 69 int num_of_pll_matches; 70 int retry_cnt; 71 unsigned int amp_mode; 72 unsigned int cur_vol; 73 unsigned int format; 74 unsigned int frame_size; 75 unsigned int init_vol; 76 unsigned int last_bclk; 77 unsigned int last_ocp_val; 78 unsigned int last_over_temp; 79 unsigned int rev_num; 80 unsigned int sys_clk_id; 81 unsigned int tdm_slot_rx; 82 unsigned int tdm_slot_tx; 83 unsigned int tsdw_cnt; 84 long check_fault_period; 85 long check_fault_status; 86 }; 87 88 static struct sma1303_pll_match sma1303_pll_matches[] = { 89 PLL_MATCH("1.411MHz", "24.595MHz", 1411200, 0x07, 0xF4, 0x8B, 0x03), 90 PLL_MATCH("1.536MHz", "24.576MHz", 1536000, 0x07, 0xE0, 0x8B, 0x03), 91 PLL_MATCH("3.072MHz", "24.576MHz", 3072000, 0x07, 0x70, 0x8B, 0x03), 92 PLL_MATCH("6.144MHz", "24.576MHz", 6144000, 0x07, 0x70, 0x8B, 0x07), 93 PLL_MATCH("12.288MHz", "24.576MHz", 12288000, 0x07, 0x70, 0x8B, 0x0B), 94 PLL_MATCH("19.2MHz", "24.343MHz", 19200000, 0x07, 0x47, 0x8B, 0x0A), 95 PLL_MATCH("24.576MHz", "24.576MHz", 24576000, 0x07, 0x70, 0x8B, 0x0F), 96 }; 97 98 static int sma1303_startup(struct snd_soc_component *); 99 static int sma1303_shutdown(struct snd_soc_component *); 100 101 static const struct reg_default sma1303_reg_def[] = { 102 { 0x00, 0x80 }, 103 { 0x01, 0x00 }, 104 { 0x02, 0x00 }, 105 { 0x03, 0x11 }, 106 { 0x04, 0x17 }, 107 { 0x09, 0x00 }, 108 { 0x0A, 0x31 }, 109 { 0x0B, 0x98 }, 110 { 0x0C, 0x84 }, 111 { 0x0D, 0x07 }, 112 { 0x0E, 0x3F }, 113 { 0x10, 0x00 }, 114 { 0x11, 0x00 }, 115 { 0x12, 0x00 }, 116 { 0x14, 0x5C }, 117 { 0x15, 0x01 }, 118 { 0x16, 0x0F }, 119 { 0x17, 0x0F }, 120 { 0x18, 0x0F }, 121 { 0x19, 0x00 }, 122 { 0x1A, 0x00 }, 123 { 0x1B, 0x00 }, 124 { 0x23, 0x19 }, 125 { 0x24, 0x00 }, 126 { 0x25, 0x00 }, 127 { 0x26, 0x04 }, 128 { 0x33, 0x00 }, 129 { 0x36, 0x92 }, 130 { 0x37, 0x27 }, 131 { 0x3B, 0x5A }, 132 { 0x3C, 0x20 }, 133 { 0x3D, 0x00 }, 134 { 0x3E, 0x03 }, 135 { 0x3F, 0x0C }, 136 { 0x8B, 0x07 }, 137 { 0x8C, 0x70 }, 138 { 0x8D, 0x8B }, 139 { 0x8E, 0x6F }, 140 { 0x8F, 0x03 }, 141 { 0x90, 0x26 }, 142 { 0x91, 0x42 }, 143 { 0x92, 0xE0 }, 144 { 0x94, 0x35 }, 145 { 0x95, 0x0C }, 146 { 0x96, 0x42 }, 147 { 0x97, 0x95 }, 148 { 0xA0, 0x00 }, 149 { 0xA1, 0x3B }, 150 { 0xA2, 0xC8 }, 151 { 0xA3, 0x28 }, 152 { 0xA4, 0x40 }, 153 { 0xA5, 0x01 }, 154 { 0xA6, 0x41 }, 155 { 0xA7, 0x00 }, 156 }; 157 158 static bool sma1303_readable_register(struct device *dev, unsigned int reg) 159 { 160 bool result; 161 162 if (reg > SMA1303_FF_DEVICE_INDEX) 163 return false; 164 165 switch (reg) { 166 case SMA1303_00_SYSTEM_CTRL ... SMA1303_04_INPUT1_CTRL4: 167 case SMA1303_09_OUTPUT_CTRL ... SMA1303_0E_MUTE_VOL_CTRL: 168 case SMA1303_10_SYSTEM_CTRL1 ... SMA1303_12_SYSTEM_CTRL3: 169 case SMA1303_14_MODULATOR ... SMA1303_1B_BASS_SPK7: 170 case SMA1303_23_COMP_LIM1 ... SMA1303_26_COMP_LIM4: 171 case SMA1303_33_SDM_CTRL ... SMA1303_34_OTP_DATA1: 172 case SMA1303_36_PROTECTION ... SMA1303_38_OTP_TRM0: 173 case SMA1303_3B_TEST1 ... SMA1303_3F_ATEST2: 174 case SMA1303_8B_PLL_POST_N ... SMA1303_92_FDPEC_CTRL: 175 case SMA1303_94_BOOST_CTRL1 ... SMA1303_97_BOOST_CTRL4: 176 case SMA1303_A0_PAD_CTRL0 ... SMA1303_A7_CLK_MON: 177 case SMA1303_FA_STATUS1 ... SMA1303_FB_STATUS2: 178 result = true; 179 break; 180 case SMA1303_FF_DEVICE_INDEX: 181 result = true; 182 break; 183 default: 184 result = false; 185 break; 186 } 187 return result; 188 } 189 190 static bool sma1303_writeable_register(struct device *dev, unsigned int reg) 191 { 192 bool result; 193 194 if (reg > SMA1303_FF_DEVICE_INDEX) 195 return false; 196 197 switch (reg) { 198 case SMA1303_00_SYSTEM_CTRL ... SMA1303_04_INPUT1_CTRL4: 199 case SMA1303_09_OUTPUT_CTRL ... SMA1303_0E_MUTE_VOL_CTRL: 200 case SMA1303_10_SYSTEM_CTRL1 ... SMA1303_12_SYSTEM_CTRL3: 201 case SMA1303_14_MODULATOR ... SMA1303_1B_BASS_SPK7: 202 case SMA1303_23_COMP_LIM1 ... SMA1303_26_COMP_LIM4: 203 case SMA1303_33_SDM_CTRL: 204 case SMA1303_36_PROTECTION ... SMA1303_37_SLOPE_CTRL: 205 case SMA1303_3B_TEST1 ... SMA1303_3F_ATEST2: 206 case SMA1303_8B_PLL_POST_N ... SMA1303_92_FDPEC_CTRL: 207 case SMA1303_94_BOOST_CTRL1 ... SMA1303_97_BOOST_CTRL4: 208 case SMA1303_A0_PAD_CTRL0 ... SMA1303_A7_CLK_MON: 209 result = true; 210 break; 211 default: 212 result = false; 213 break; 214 } 215 return result; 216 } 217 218 static bool sma1303_volatile_register(struct device *dev, unsigned int reg) 219 { 220 bool result; 221 222 switch (reg) { 223 case SMA1303_FA_STATUS1 ... SMA1303_FB_STATUS2: 224 result = true; 225 break; 226 case SMA1303_FF_DEVICE_INDEX: 227 result = true; 228 break; 229 default: 230 result = false; 231 break; 232 } 233 return result; 234 } 235 236 static const DECLARE_TLV_DB_SCALE(sma1303_spk_tlv, -6000, 50, 0); 237 238 static int sma1303_regmap_write(struct sma1303_priv *sma1303, 239 unsigned int reg, unsigned int val) 240 { 241 int ret = 0; 242 int cnt = sma1303->retry_cnt; 243 244 while (cnt--) { 245 ret = regmap_write(sma1303->regmap, reg, val); 246 if (ret < 0) { 247 dev_err(sma1303->dev, 248 "Failed to write [0x%02X]\n", reg); 249 } else 250 break; 251 } 252 return ret; 253 } 254 255 static int sma1303_regmap_update_bits(struct sma1303_priv *sma1303, 256 unsigned int reg, unsigned int mask, unsigned int val, bool *change) 257 { 258 int ret = 0; 259 int cnt = sma1303->retry_cnt; 260 261 while (cnt--) { 262 ret = regmap_update_bits_check(sma1303->regmap, reg, 263 mask, val, change); 264 if (ret < 0) { 265 dev_err(sma1303->dev, 266 "Failed to update [0x%02X]\n", reg); 267 } else 268 break; 269 } 270 return ret; 271 } 272 273 static int sma1303_regmap_read(struct sma1303_priv *sma1303, 274 unsigned int reg, unsigned int *val) 275 { 276 int ret = 0; 277 int cnt = sma1303->retry_cnt; 278 279 while (cnt--) { 280 ret = regmap_read(sma1303->regmap, reg, val); 281 if (ret < 0) { 282 dev_err(sma1303->dev, 283 "Failed to read [0x%02X]\n", reg); 284 } else 285 break; 286 } 287 return ret; 288 } 289 290 static const char * const sma1303_aif_in_source_text[] = { 291 "Mono", "Left", "Right"}; 292 static const char * const sma1303_aif_out_source_text[] = { 293 "Disable", "After_FmtC", "After_Mixer", "After_DSP", "After_Post", 294 "Clk_PLL", "Clk_OSC"}; 295 static const char * const sma1303_tdm_slot_text[] = { 296 "Slot0", "Slot1", "Slot2", "Slot3", 297 "Slot4", "Slot5", "Slot6", "Slot7"}; 298 299 static const struct soc_enum sma1303_aif_in_source_enum = 300 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(sma1303_aif_in_source_text), 301 sma1303_aif_in_source_text); 302 static const struct soc_enum sma1303_aif_out_source_enum = 303 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(sma1303_aif_out_source_text), 304 sma1303_aif_out_source_text); 305 static const struct soc_enum sma1303_tdm_slot_enum = 306 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(sma1303_tdm_slot_text), 307 sma1303_tdm_slot_text); 308 309 static int sma1303_force_mute_get(struct snd_kcontrol *kcontrol, 310 struct snd_ctl_elem_value *ucontrol) 311 { 312 struct snd_soc_component *component = 313 snd_soc_kcontrol_component(kcontrol); 314 struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component); 315 316 ucontrol->value.integer.value[0] = (int)sma1303->force_mute_status; 317 dev_dbg(sma1303->dev, "%s : Force Mute %s\n", __func__, 318 sma1303->force_mute_status ? "ON" : "OFF"); 319 320 return 0; 321 } 322 323 static int sma1303_force_mute_put(struct snd_kcontrol *kcontrol, 324 struct snd_ctl_elem_value *ucontrol) 325 { 326 struct snd_soc_component *component = 327 snd_soc_kcontrol_component(kcontrol); 328 struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component); 329 bool change = false, val = (bool)ucontrol->value.integer.value[0]; 330 331 if (sma1303->force_mute_status == val) 332 change = false; 333 else { 334 change = true; 335 sma1303->force_mute_status = val; 336 } 337 dev_dbg(sma1303->dev, "%s : Force Mute %s\n", __func__, 338 sma1303->force_mute_status ? "ON" : "OFF"); 339 340 return change; 341 } 342 343 static int sma1303_postscaler_get(struct snd_kcontrol *kcontrol, 344 struct snd_ctl_elem_value *ucontrol) 345 { 346 struct snd_soc_component *component = 347 snd_soc_kcontrol_component(kcontrol); 348 struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component); 349 int val, ret; 350 351 ret = sma1303_regmap_read(sma1303, SMA1303_90_POSTSCALER, &val); 352 if (ret < 0) 353 return -EINVAL; 354 355 ucontrol->value.integer.value[0] = (val & 0x7E) >> 1; 356 357 return 0; 358 } 359 360 static int sma1303_postscaler_put(struct snd_kcontrol *kcontrol, 361 struct snd_ctl_elem_value *ucontrol) 362 { 363 struct snd_soc_component *component = 364 snd_soc_kcontrol_component(kcontrol); 365 struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component); 366 int ret, val = (int)ucontrol->value.integer.value[0]; 367 bool change; 368 369 ret = sma1303_regmap_update_bits(sma1303, 370 SMA1303_90_POSTSCALER, 0x7E, (val << 1), &change); 371 if (ret < 0) 372 return -EINVAL; 373 374 return change; 375 } 376 377 static int sma1303_tdm_slot_rx_get(struct snd_kcontrol *kcontrol, 378 struct snd_ctl_elem_value *ucontrol) 379 { 380 struct snd_soc_component *component = 381 snd_soc_kcontrol_component(kcontrol); 382 struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component); 383 int val, ret; 384 385 ret = sma1303_regmap_read(sma1303, SMA1303_A5_TDM1, &val); 386 if (ret < 0) 387 return -EINVAL; 388 389 ucontrol->value.integer.value[0] = (val & 0x38) >> 3; 390 sma1303->tdm_slot_rx = ucontrol->value.integer.value[0]; 391 392 return 0; 393 } 394 395 static int sma1303_tdm_slot_rx_put(struct snd_kcontrol *kcontrol, 396 struct snd_ctl_elem_value *ucontrol) 397 { 398 struct snd_soc_component *component = 399 snd_soc_kcontrol_component(kcontrol); 400 struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component); 401 int ret, val = (int)ucontrol->value.integer.value[0]; 402 bool change; 403 404 ret = sma1303_regmap_update_bits(sma1303, 405 SMA1303_A5_TDM1, 0x38, (val << 3), &change); 406 if (ret < 0) 407 return -EINVAL; 408 409 return change; 410 } 411 412 static int sma1303_tdm_slot_tx_get(struct snd_kcontrol *kcontrol, 413 struct snd_ctl_elem_value *ucontrol) 414 { 415 struct snd_soc_component *component = 416 snd_soc_kcontrol_component(kcontrol); 417 struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component); 418 int val, ret; 419 420 ret = sma1303_regmap_read(sma1303, SMA1303_A6_TDM2, &val); 421 if (ret < 0) 422 return -EINVAL; 423 424 ucontrol->value.integer.value[0] = (val & 0x38) >> 3; 425 sma1303->tdm_slot_tx = ucontrol->value.integer.value[0]; 426 427 return 0; 428 } 429 430 static int sma1303_tdm_slot_tx_put(struct snd_kcontrol *kcontrol, 431 struct snd_ctl_elem_value *ucontrol) 432 { 433 struct snd_soc_component *component = 434 snd_soc_kcontrol_component(kcontrol); 435 struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component); 436 int ret, val = (int)ucontrol->value.integer.value[0]; 437 bool change; 438 439 ret = sma1303_regmap_update_bits(sma1303, 440 SMA1303_A6_TDM2, 0x38, (val << 3), &change); 441 if (ret < 0) 442 return -EINVAL; 443 444 return change; 445 } 446 447 static int sma1303_startup(struct snd_soc_component *component) 448 { 449 struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component); 450 bool change = false, temp = false; 451 452 sma1303_regmap_update_bits(sma1303, SMA1303_8E_PLL_CTRL, 453 SMA1303_PLL_PD2_MASK, SMA1303_PLL_OPERATION2, &temp); 454 if (temp == true) 455 change = true; 456 457 sma1303_regmap_update_bits(sma1303, SMA1303_00_SYSTEM_CTRL, 458 SMA1303_POWER_MASK, SMA1303_POWER_ON, &temp); 459 if (temp == true) 460 change = true; 461 462 if (sma1303->amp_mode == SMA1303_MONO) { 463 sma1303_regmap_update_bits(sma1303, 464 SMA1303_10_SYSTEM_CTRL1, 465 SMA1303_SPK_MODE_MASK, 466 SMA1303_SPK_MONO, 467 &temp); 468 if (temp == true) 469 change = true; 470 471 } else { 472 sma1303_regmap_update_bits(sma1303, 473 SMA1303_10_SYSTEM_CTRL1, 474 SMA1303_SPK_MODE_MASK, 475 SMA1303_SPK_STEREO, 476 &temp); 477 if (temp == true) 478 change = true; 479 } 480 481 if (sma1303->check_fault_status) { 482 if (sma1303->check_fault_period > 0) 483 queue_delayed_work(system_freezable_wq, 484 &sma1303->check_fault_work, 485 sma1303->check_fault_period * HZ); 486 else 487 queue_delayed_work(system_freezable_wq, 488 &sma1303->check_fault_work, 489 CHECK_PERIOD_TIME * HZ); 490 } 491 492 sma1303->amp_power_status = true; 493 494 return change; 495 } 496 497 static int sma1303_shutdown(struct snd_soc_component *component) 498 { 499 struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component); 500 bool change = false, temp = false; 501 502 cancel_delayed_work_sync(&sma1303->check_fault_work); 503 504 sma1303_regmap_update_bits(sma1303, SMA1303_10_SYSTEM_CTRL1, 505 SMA1303_SPK_MODE_MASK, SMA1303_SPK_OFF, &temp); 506 if (temp == true) 507 change = true; 508 509 sma1303_regmap_update_bits(sma1303, SMA1303_00_SYSTEM_CTRL, 510 SMA1303_POWER_MASK, SMA1303_POWER_OFF, &temp); 511 if (temp == true) 512 change = true; 513 sma1303_regmap_update_bits(sma1303, SMA1303_8E_PLL_CTRL, 514 SMA1303_PLL_PD2_MASK, SMA1303_PLL_PD2, &temp); 515 if (temp == true) 516 change = true; 517 518 sma1303->amp_power_status = false; 519 520 return change; 521 } 522 523 static int sma1303_aif_in_event(struct snd_soc_dapm_widget *w, 524 struct snd_kcontrol *kcontrol, int event) 525 { 526 struct snd_soc_component *component = 527 snd_soc_dapm_to_component(w->dapm); 528 struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component); 529 unsigned int mux = dapm_kcontrol_get_value(w->kcontrols[0]); 530 int ret = 0; 531 bool change = false, temp = false; 532 533 switch (event) { 534 case SND_SOC_DAPM_PRE_PMU: 535 switch (mux) { 536 case 0: 537 ret += sma1303_regmap_update_bits(sma1303, 538 SMA1303_11_SYSTEM_CTRL2, 539 SMA1303_MONOMIX_MASK, 540 SMA1303_MONOMIX_ON, 541 &change); 542 sma1303->amp_mode = SMA1303_MONO; 543 break; 544 case 1: 545 ret += sma1303_regmap_update_bits(sma1303, 546 SMA1303_11_SYSTEM_CTRL2, 547 SMA1303_MONOMIX_MASK, 548 SMA1303_MONOMIX_OFF, 549 &temp); 550 if (temp == true) 551 change = true; 552 ret += sma1303_regmap_update_bits(sma1303, 553 SMA1303_11_SYSTEM_CTRL2, 554 SMA1303_LR_DATA_SW_MASK, 555 SMA1303_LR_DATA_SW_NORMAL, 556 &temp); 557 if (temp == true) 558 change = true; 559 sma1303->amp_mode = SMA1303_STEREO; 560 break; 561 case 2: 562 ret += sma1303_regmap_update_bits(sma1303, 563 SMA1303_11_SYSTEM_CTRL2, 564 SMA1303_MONOMIX_MASK, 565 SMA1303_MONOMIX_OFF, 566 &temp); 567 if (temp == true) 568 change = true; 569 ret += sma1303_regmap_update_bits(sma1303, 570 SMA1303_11_SYSTEM_CTRL2, 571 SMA1303_LR_DATA_SW_MASK, 572 SMA1303_LR_DATA_SW_SWAP, 573 &temp); 574 if (temp == true) 575 change = true; 576 sma1303->amp_mode = SMA1303_STEREO; 577 break; 578 default: 579 dev_err(sma1303->dev, "%s : Invalid value (%d)\n", 580 __func__, mux); 581 return -EINVAL; 582 } 583 584 dev_dbg(sma1303->dev, "%s : Source : %s\n", __func__, 585 sma1303_aif_in_source_text[mux]); 586 break; 587 } 588 if (ret < 0) 589 return -EINVAL; 590 return change; 591 } 592 593 static int sma1303_aif_out_event(struct snd_soc_dapm_widget *w, 594 struct snd_kcontrol *kcontrol, int event) 595 { 596 struct snd_soc_component *component = 597 snd_soc_dapm_to_component(w->dapm); 598 struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component); 599 unsigned int mux = dapm_kcontrol_get_value(w->kcontrols[0]); 600 int ret = 0; 601 bool change = false, temp = false; 602 603 switch (event) { 604 case SND_SOC_DAPM_PRE_PMU: 605 switch (mux) { 606 case 0: 607 ret += sma1303_regmap_update_bits(sma1303, 608 SMA1303_A3_TOP_MAN2, 609 SMA1303_TEST_CLKO_EN_MASK, 610 SMA1303_NORMAL_SDO, 611 &temp); 612 if (temp == true) 613 change = true; 614 ret += sma1303_regmap_update_bits(sma1303, 615 SMA1303_09_OUTPUT_CTRL, 616 SMA1303_PORT_OUT_SEL_MASK, 617 SMA1303_OUT_SEL_DISABLE, 618 &temp); 619 if (temp == true) 620 change = true; 621 break; 622 case 1: 623 ret += sma1303_regmap_update_bits(sma1303, 624 SMA1303_A3_TOP_MAN2, 625 SMA1303_TEST_CLKO_EN_MASK, 626 SMA1303_NORMAL_SDO, 627 &temp); 628 if (temp == true) 629 change = true; 630 ret += sma1303_regmap_update_bits(sma1303, 631 SMA1303_09_OUTPUT_CTRL, 632 SMA1303_PORT_OUT_SEL_MASK, 633 SMA1303_FORMAT_CONVERTER, 634 &temp); 635 if (temp == true) 636 change = true; 637 break; 638 case 2: 639 ret += sma1303_regmap_update_bits(sma1303, 640 SMA1303_A3_TOP_MAN2, 641 SMA1303_TEST_CLKO_EN_MASK, 642 SMA1303_NORMAL_SDO, 643 &temp); 644 if (temp == true) 645 change = true; 646 ret += sma1303_regmap_update_bits(sma1303, 647 SMA1303_09_OUTPUT_CTRL, 648 SMA1303_PORT_OUT_SEL_MASK, 649 SMA1303_MIXER_OUTPUT, 650 &temp); 651 if (temp == true) 652 change = true; 653 break; 654 case 3: 655 ret += sma1303_regmap_update_bits(sma1303, 656 SMA1303_A3_TOP_MAN2, 657 SMA1303_TEST_CLKO_EN_MASK, 658 SMA1303_NORMAL_SDO, 659 &temp); 660 if (temp == true) 661 change = true; 662 ret += sma1303_regmap_update_bits(sma1303, 663 SMA1303_09_OUTPUT_CTRL, 664 SMA1303_PORT_OUT_SEL_MASK, 665 SMA1303_SPEAKER_PATH, 666 &temp); 667 if (temp == true) 668 change = true; 669 break; 670 case 4: 671 ret += sma1303_regmap_update_bits(sma1303, 672 SMA1303_A3_TOP_MAN2, 673 SMA1303_TEST_CLKO_EN_MASK, 674 SMA1303_NORMAL_SDO, 675 &temp); 676 if (temp == true) 677 change = true; 678 ret += sma1303_regmap_update_bits(sma1303, 679 SMA1303_09_OUTPUT_CTRL, 680 SMA1303_PORT_OUT_SEL_MASK, 681 SMA1303_POSTSCALER_OUTPUT, 682 &temp); 683 if (temp == true) 684 change = true; 685 break; 686 case 5: 687 ret += sma1303_regmap_update_bits(sma1303, 688 SMA1303_A3_TOP_MAN2, 689 SMA1303_TEST_CLKO_EN_MASK, 690 SMA1303_CLK_OUT_SDO, 691 &temp); 692 if (temp == true) 693 change = true; 694 ret += sma1303_regmap_update_bits(sma1303, 695 SMA1303_A3_TOP_MAN2, 696 SMA1303_MON_OSC_PLL_MASK, 697 SMA1303_PLL_SDO, 698 &temp); 699 if (temp == true) 700 change = true; 701 break; 702 case 6: 703 ret += sma1303_regmap_update_bits(sma1303, 704 SMA1303_A3_TOP_MAN2, 705 SMA1303_TEST_CLKO_EN_MASK, 706 SMA1303_CLK_OUT_SDO, 707 &temp); 708 if (temp == true) 709 change = true; 710 ret += sma1303_regmap_update_bits(sma1303, 711 SMA1303_A3_TOP_MAN2, 712 SMA1303_MON_OSC_PLL_MASK, 713 SMA1303_OSC_SDO, 714 &temp); 715 if (temp == true) 716 change = true; 717 break; 718 default: 719 dev_err(sma1303->dev, "%s : Invalid value (%d)\n", 720 __func__, mux); 721 return -EINVAL; 722 } 723 724 dev_dbg(sma1303->dev, "%s : Source : %s\n", __func__, 725 sma1303_aif_out_source_text[mux]); 726 break; 727 } 728 if (ret < 0) 729 return -EINVAL; 730 return change; 731 } 732 733 static int sma1303_sdo_event(struct snd_soc_dapm_widget *w, 734 struct snd_kcontrol *kcontrol, int event) 735 { 736 struct snd_soc_component *component = 737 snd_soc_dapm_to_component(w->dapm); 738 struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component); 739 int ret = 0; 740 bool change = false, temp = false; 741 742 switch (event) { 743 case SND_SOC_DAPM_PRE_PMU: 744 dev_dbg(sma1303->dev, 745 "%s : SND_SOC_DAPM_PRE_PMU\n", __func__); 746 ret += sma1303_regmap_update_bits(sma1303, 747 SMA1303_09_OUTPUT_CTRL, 748 SMA1303_PORT_CONFIG_MASK, 749 SMA1303_OUTPUT_PORT_ENABLE, 750 &temp); 751 if (temp == true) 752 change = true; 753 ret += sma1303_regmap_update_bits(sma1303, 754 SMA1303_A3_TOP_MAN2, 755 SMA1303_SDO_OUTPUT_MASK, 756 SMA1303_NORMAL_OUT, 757 &temp); 758 if (temp == true) 759 change = true; 760 break; 761 case SND_SOC_DAPM_POST_PMD: 762 dev_dbg(sma1303->dev, 763 "%s : SND_SOC_DAPM_POST_PMD\n", __func__); 764 ret += sma1303_regmap_update_bits(sma1303, 765 SMA1303_09_OUTPUT_CTRL, 766 SMA1303_PORT_CONFIG_MASK, 767 SMA1303_INPUT_PORT_ONLY, 768 &temp); 769 if (temp == true) 770 change = true; 771 ret += sma1303_regmap_update_bits(sma1303, 772 SMA1303_A3_TOP_MAN2, 773 SMA1303_SDO_OUTPUT_MASK, 774 SMA1303_HIGH_Z_OUT, 775 &temp); 776 if (temp == true) 777 change = true; 778 break; 779 } 780 if (ret < 0) 781 return -EINVAL; 782 return change; 783 } 784 785 static int sma1303_post_scaler_event(struct snd_soc_dapm_widget *w, 786 struct snd_kcontrol *kcontrol, int event) 787 { 788 struct snd_soc_component *component = 789 snd_soc_dapm_to_component(w->dapm); 790 struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component); 791 int ret = 0; 792 bool change = false; 793 794 switch (event) { 795 case SND_SOC_DAPM_PRE_PMU: 796 dev_dbg(sma1303->dev, 797 "%s : SND_SOC_DAPM_PRE_PMU\n", __func__); 798 ret += sma1303_regmap_update_bits(sma1303, 799 SMA1303_90_POSTSCALER, 800 SMA1303_BYP_POST_MASK, 801 SMA1303_EN_POST_SCALER, 802 &change); 803 break; 804 case SND_SOC_DAPM_POST_PMD: 805 dev_dbg(sma1303->dev, 806 "%s : SND_SOC_DAPM_POST_PMD\n", __func__); 807 ret += sma1303_regmap_update_bits(sma1303, 808 SMA1303_90_POSTSCALER, 809 SMA1303_BYP_POST_MASK, 810 SMA1303_BYP_POST_SCALER, 811 &change); 812 break; 813 } 814 if (ret < 0) 815 return -EINVAL; 816 return change; 817 } 818 819 static int sma1303_power_event(struct snd_soc_dapm_widget *w, 820 struct snd_kcontrol *kcontrol, int event) 821 { 822 struct snd_soc_component *component = 823 snd_soc_dapm_to_component(w->dapm); 824 struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component); 825 int ret = 0; 826 827 switch (event) { 828 case SND_SOC_DAPM_POST_PMU: 829 dev_dbg(sma1303->dev, 830 "%s : SND_SOC_DAPM_POST_PMU\n", __func__); 831 ret = sma1303_startup(component); 832 break; 833 case SND_SOC_DAPM_PRE_PMD: 834 dev_dbg(sma1303->dev, 835 "%s : SND_SOC_DAPM_PRE_PMD\n", __func__); 836 ret = sma1303_shutdown(component); 837 break; 838 } 839 return ret; 840 } 841 842 static const struct snd_kcontrol_new sma1303_aif_in_source_control = 843 SOC_DAPM_ENUM("AIF IN Source", sma1303_aif_in_source_enum); 844 static const struct snd_kcontrol_new sma1303_aif_out_source_control = 845 SOC_DAPM_ENUM("AIF OUT Source", sma1303_aif_out_source_enum); 846 static const struct snd_kcontrol_new sma1303_sdo_control = 847 SOC_DAPM_SINGLE_VIRT("Switch", 1); 848 static const struct snd_kcontrol_new sma1303_post_scaler_control = 849 SOC_DAPM_SINGLE_VIRT("Switch", 1); 850 static const struct snd_kcontrol_new sma1303_enable_control = 851 SOC_DAPM_SINGLE_VIRT("Switch", 1); 852 853 static const struct snd_kcontrol_new sma1303_snd_controls[] = { 854 SOC_SINGLE_TLV("Speaker Volume", SMA1303_0A_SPK_VOL, 855 0, 167, 1, sma1303_spk_tlv), 856 SOC_SINGLE_BOOL_EXT("Force Mute Switch", 0, 857 sma1303_force_mute_get, sma1303_force_mute_put), 858 SOC_SINGLE_EXT("Postscaler Gain", SMA1303_90_POSTSCALER, 1, 0x30, 0, 859 sma1303_postscaler_get, sma1303_postscaler_put), 860 SOC_ENUM_EXT("TDM RX Slot Position", sma1303_tdm_slot_enum, 861 sma1303_tdm_slot_rx_get, sma1303_tdm_slot_rx_put), 862 SOC_ENUM_EXT("TDM TX Slot Position", sma1303_tdm_slot_enum, 863 sma1303_tdm_slot_tx_get, sma1303_tdm_slot_tx_put), 864 }; 865 866 static const struct snd_soc_dapm_widget sma1303_dapm_widgets[] = { 867 /* platform domain */ 868 SND_SOC_DAPM_OUTPUT("SPK"), 869 SND_SOC_DAPM_INPUT("SDO"), 870 871 /* path domain */ 872 SND_SOC_DAPM_MUX_E("AIF IN Source", SND_SOC_NOPM, 0, 0, 873 &sma1303_aif_in_source_control, 874 sma1303_aif_in_event, 875 SND_SOC_DAPM_PRE_PMU), 876 SND_SOC_DAPM_MUX_E("AIF OUT Source", SND_SOC_NOPM, 0, 0, 877 &sma1303_aif_out_source_control, 878 sma1303_aif_out_event, 879 SND_SOC_DAPM_PRE_PMU), 880 SND_SOC_DAPM_SWITCH_E("SDO Enable", SND_SOC_NOPM, 0, 0, 881 &sma1303_sdo_control, 882 sma1303_sdo_event, 883 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), 884 SND_SOC_DAPM_MIXER("Entry", SND_SOC_NOPM, 0, 0, NULL, 0), 885 SND_SOC_DAPM_SWITCH_E("Post Scaler", SND_SOC_NOPM, 0, 1, 886 &sma1303_post_scaler_control, 887 sma1303_post_scaler_event, 888 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), 889 SND_SOC_DAPM_OUT_DRV_E("AMP Power", SND_SOC_NOPM, 0, 0, NULL, 0, 890 sma1303_power_event, 891 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), 892 SND_SOC_DAPM_SWITCH("AMP Enable", SND_SOC_NOPM, 0, 1, 893 &sma1303_enable_control), 894 895 /* stream domain */ 896 SND_SOC_DAPM_AIF_IN("AIF IN", "Playback", 0, SND_SOC_NOPM, 0, 0), 897 SND_SOC_DAPM_AIF_OUT("AIF OUT", "Capture", 0, SND_SOC_NOPM, 0, 0), 898 }; 899 900 static const struct snd_soc_dapm_route sma1303_audio_map[] = { 901 /* Playback */ 902 {"AIF IN Source", "Mono", "AIF IN"}, 903 {"AIF IN Source", "Left", "AIF IN"}, 904 {"AIF IN Source", "Right", "AIF IN"}, 905 906 {"SDO Enable", "Switch", "AIF IN"}, 907 {"AIF OUT Source", "Disable", "SDO Enable"}, 908 {"AIF OUT Source", "After_FmtC", "SDO Enable"}, 909 {"AIF OUT Source", "After_Mixer", "SDO Enable"}, 910 {"AIF OUT Source", "After_DSP", "SDO Enable"}, 911 {"AIF OUT Source", "After_Post", "SDO Enable"}, 912 {"AIF OUT Source", "Clk_PLL", "SDO Enable"}, 913 {"AIF OUT Source", "Clk_OSC", "SDO Enable"}, 914 915 {"Entry", NULL, "AIF OUT Source"}, 916 {"Entry", NULL, "AIF IN Source"}, 917 918 {"Post Scaler", "Switch", "Entry"}, 919 {"AMP Power", NULL, "Entry"}, 920 {"AMP Power", NULL, "Entry"}, 921 922 {"AMP Enable", "Switch", "AMP Power"}, 923 {"SPK", NULL, "AMP Enable"}, 924 925 /* Capture */ 926 {"AIF OUT", NULL, "AMP Enable"}, 927 }; 928 929 static int sma1303_setup_pll(struct snd_soc_component *component, 930 unsigned int bclk) 931 { 932 struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component); 933 934 int i = 0, ret = 0; 935 936 dev_dbg(component->dev, "%s : BCLK = %dHz\n", 937 __func__, bclk); 938 939 if (sma1303->sys_clk_id == SMA1303_PLL_CLKIN_MCLK) { 940 dev_dbg(component->dev, "%s : MCLK is not supported\n", 941 __func__); 942 } else if (sma1303->sys_clk_id == SMA1303_PLL_CLKIN_BCLK) { 943 for (i = 0; i < sma1303->num_of_pll_matches; i++) { 944 if (sma1303->pll_matches[i].input_clk == bclk) 945 break; 946 } 947 if (i == sma1303->num_of_pll_matches) { 948 dev_dbg(component->dev, "%s : No matching value between pll table and SCK\n", 949 __func__); 950 return -EINVAL; 951 } 952 953 ret += sma1303_regmap_update_bits(sma1303, 954 SMA1303_A2_TOP_MAN1, 955 SMA1303_PLL_PD_MASK|SMA1303_PLL_REF_CLK_MASK, 956 SMA1303_PLL_OPERATION|SMA1303_PLL_SCK, 957 NULL); 958 } 959 960 ret += sma1303_regmap_write(sma1303, 961 SMA1303_8B_PLL_POST_N, 962 sma1303->pll_matches[i].post_n); 963 964 ret += sma1303_regmap_write(sma1303, 965 SMA1303_8C_PLL_N, 966 sma1303->pll_matches[i].n); 967 968 ret += sma1303_regmap_write(sma1303, 969 SMA1303_8D_PLL_A_SETTING, 970 sma1303->pll_matches[i].vco); 971 972 ret += sma1303_regmap_write(sma1303, 973 SMA1303_8F_PLL_P_CP, 974 sma1303->pll_matches[i].p_cp); 975 if (ret < 0) 976 return -EINVAL; 977 978 return 0; 979 } 980 981 static int sma1303_dai_hw_params_amp(struct snd_pcm_substream *substream, 982 struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) 983 { 984 struct snd_soc_component *component = dai->component; 985 struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component); 986 unsigned int bclk = 0; 987 int ret = 0; 988 989 if (sma1303->format == SND_SOC_DAIFMT_DSP_A) 990 bclk = params_rate(params) * sma1303->frame_size; 991 else 992 bclk = params_rate(params) * params_physical_width(params) 993 * params_channels(params); 994 995 dev_dbg(component->dev, 996 "%s : rate = %d : bit size = %d : channel = %d\n", 997 __func__, params_rate(params), params_width(params), 998 params_channels(params)); 999 1000 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { 1001 if (sma1303->sys_clk_id == SMA1303_PLL_CLKIN_BCLK) { 1002 if (sma1303->last_bclk != bclk) { 1003 sma1303_setup_pll(component, bclk); 1004 sma1303->last_bclk = bclk; 1005 } 1006 } 1007 1008 switch (params_rate(params)) { 1009 case 8000: 1010 case 12000: 1011 case 16000: 1012 case 24000: 1013 case 32000: 1014 case 44100: 1015 case 48000: 1016 case 96000: 1017 ret += sma1303_regmap_update_bits(sma1303, 1018 SMA1303_A2_TOP_MAN1, 1019 SMA1303_DAC_DN_CONV_MASK, 1020 SMA1303_DAC_DN_CONV_DISABLE, 1021 NULL); 1022 1023 ret += sma1303_regmap_update_bits(sma1303, 1024 SMA1303_01_INPUT1_CTRL1, 1025 SMA1303_LEFTPOL_MASK, 1026 SMA1303_LOW_FIRST_CH, 1027 NULL); 1028 break; 1029 1030 case 192000: 1031 ret += sma1303_regmap_update_bits(sma1303, 1032 SMA1303_A2_TOP_MAN1, 1033 SMA1303_DAC_DN_CONV_MASK, 1034 SMA1303_DAC_DN_CONV_ENABLE, 1035 NULL); 1036 1037 ret += sma1303_regmap_update_bits(sma1303, 1038 SMA1303_01_INPUT1_CTRL1, 1039 SMA1303_LEFTPOL_MASK, 1040 SMA1303_HIGH_FIRST_CH, 1041 NULL); 1042 break; 1043 1044 default: 1045 dev_err(component->dev, "%s not support rate : %d\n", 1046 __func__, params_rate(params)); 1047 1048 return -EINVAL; 1049 } 1050 1051 } else { 1052 1053 switch (params_format(params)) { 1054 1055 case SNDRV_PCM_FORMAT_S16_LE: 1056 dev_dbg(component->dev, 1057 "%s set format SNDRV_PCM_FORMAT_S16_LE\n", 1058 __func__); 1059 ret += sma1303_regmap_update_bits(sma1303, 1060 SMA1303_A4_TOP_MAN3, 1061 SMA1303_SCK_RATE_MASK, 1062 SMA1303_SCK_32FS, 1063 NULL); 1064 break; 1065 1066 case SNDRV_PCM_FORMAT_S24_LE: 1067 dev_dbg(component->dev, 1068 "%s set format SNDRV_PCM_FORMAT_S24_LE\n", 1069 __func__); 1070 ret += sma1303_regmap_update_bits(sma1303, 1071 SMA1303_A4_TOP_MAN3, 1072 SMA1303_SCK_RATE_MASK, 1073 SMA1303_SCK_64FS, 1074 NULL); 1075 break; 1076 case SNDRV_PCM_FORMAT_S32_LE: 1077 dev_dbg(component->dev, 1078 "%s set format SNDRV_PCM_FORMAT_S32_LE\n", 1079 __func__); 1080 ret += sma1303_regmap_update_bits(sma1303, 1081 SMA1303_A4_TOP_MAN3, 1082 SMA1303_SCK_RATE_MASK, 1083 SMA1303_SCK_64FS, 1084 NULL); 1085 break; 1086 default: 1087 dev_err(component->dev, 1088 "%s not support data bit : %d\n", __func__, 1089 params_format(params)); 1090 return -EINVAL; 1091 } 1092 } 1093 1094 switch (sma1303->format) { 1095 case SND_SOC_DAIFMT_I2S: 1096 ret += sma1303_regmap_update_bits(sma1303, 1097 SMA1303_01_INPUT1_CTRL1, 1098 SMA1303_I2S_MODE_MASK, 1099 SMA1303_STANDARD_I2S, 1100 NULL); 1101 ret += sma1303_regmap_update_bits(sma1303, 1102 SMA1303_A4_TOP_MAN3, 1103 SMA1303_O_FORMAT_MASK, 1104 SMA1303_O_FMT_I2S, 1105 NULL); 1106 break; 1107 case SND_SOC_DAIFMT_LEFT_J: 1108 ret += sma1303_regmap_update_bits(sma1303, 1109 SMA1303_01_INPUT1_CTRL1, 1110 SMA1303_I2S_MODE_MASK, 1111 SMA1303_LJ, 1112 NULL); 1113 ret += sma1303_regmap_update_bits(sma1303, 1114 SMA1303_A4_TOP_MAN3, 1115 SMA1303_O_FORMAT_MASK, 1116 SMA1303_O_FMT_LJ, 1117 NULL); 1118 break; 1119 case SND_SOC_DAIFMT_RIGHT_J: 1120 switch (params_width(params)) { 1121 case 16: 1122 ret += sma1303_regmap_update_bits(sma1303, 1123 SMA1303_01_INPUT1_CTRL1, 1124 SMA1303_I2S_MODE_MASK, 1125 SMA1303_RJ_16BIT, 1126 NULL); 1127 break; 1128 case 24: 1129 case 32: 1130 ret += sma1303_regmap_update_bits(sma1303, 1131 SMA1303_01_INPUT1_CTRL1, 1132 SMA1303_I2S_MODE_MASK, 1133 SMA1303_RJ_24BIT, 1134 NULL); 1135 break; 1136 } 1137 break; 1138 case SND_SOC_DAIFMT_DSP_A: 1139 ret += sma1303_regmap_update_bits(sma1303, 1140 SMA1303_01_INPUT1_CTRL1, 1141 SMA1303_I2S_MODE_MASK, 1142 SMA1303_STANDARD_I2S, 1143 NULL); 1144 ret += sma1303_regmap_update_bits(sma1303, 1145 SMA1303_A4_TOP_MAN3, 1146 SMA1303_O_FORMAT_MASK, 1147 SMA1303_O_FMT_TDM, 1148 NULL); 1149 break; 1150 } 1151 1152 switch (params_width(params)) { 1153 case 16: 1154 case 24: 1155 case 32: 1156 break; 1157 default: 1158 dev_err(component->dev, 1159 "%s not support data bit : %d\n", __func__, 1160 params_format(params)); 1161 return -EINVAL; 1162 } 1163 if (ret < 0) 1164 return -EINVAL; 1165 1166 return 0; 1167 } 1168 1169 static int sma1303_dai_set_sysclk_amp(struct snd_soc_dai *dai, 1170 int clk_id, unsigned int freq, int dir) 1171 { 1172 struct snd_soc_component *component = dai->component; 1173 struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component); 1174 1175 switch (clk_id) { 1176 case SMA1303_EXTERNAL_CLOCK_19_2: 1177 break; 1178 case SMA1303_EXTERNAL_CLOCK_24_576: 1179 break; 1180 case SMA1303_PLL_CLKIN_MCLK: 1181 break; 1182 case SMA1303_PLL_CLKIN_BCLK: 1183 break; 1184 default: 1185 dev_err(component->dev, "Invalid clk id: %d\n", clk_id); 1186 return -EINVAL; 1187 } 1188 sma1303->sys_clk_id = clk_id; 1189 return 0; 1190 } 1191 1192 static int sma1303_dai_mute(struct snd_soc_dai *dai, int mute, int stream) 1193 { 1194 struct snd_soc_component *component = dai->component; 1195 struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component); 1196 int ret = 0; 1197 1198 if (stream == SNDRV_PCM_STREAM_CAPTURE) 1199 return ret; 1200 1201 if (mute) { 1202 dev_dbg(component->dev, "%s : %s\n", __func__, "MUTE"); 1203 1204 ret += sma1303_regmap_update_bits(sma1303, 1205 SMA1303_0E_MUTE_VOL_CTRL, 1206 SMA1303_SPK_MUTE_MASK, 1207 SMA1303_SPK_MUTE, 1208 NULL); 1209 1210 /* Need to wait time for mute slope */ 1211 msleep(55); 1212 } else { 1213 if (!sma1303->force_mute_status) { 1214 dev_dbg(component->dev, "%s : %s\n", 1215 __func__, "UNMUTE"); 1216 ret += sma1303_regmap_update_bits(sma1303, 1217 SMA1303_0E_MUTE_VOL_CTRL, 1218 SMA1303_SPK_MUTE_MASK, 1219 SMA1303_SPK_UNMUTE, 1220 NULL); 1221 } else { 1222 dev_dbg(sma1303->dev, 1223 "%s : FORCE MUTE!!!\n", __func__); 1224 } 1225 } 1226 1227 if (ret < 0) 1228 return -EINVAL; 1229 return 0; 1230 } 1231 1232 static int sma1303_dai_set_fmt_amp(struct snd_soc_dai *dai, 1233 unsigned int fmt) 1234 { 1235 struct snd_soc_component *component = dai->component; 1236 struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component); 1237 int ret = 0; 1238 1239 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 1240 1241 case SND_SOC_DAIFMT_CBC_CFC: 1242 dev_dbg(component->dev, 1243 "%s : %s\n", __func__, "I2S/TDM Device mode"); 1244 ret += sma1303_regmap_update_bits(sma1303, 1245 SMA1303_01_INPUT1_CTRL1, 1246 SMA1303_CONTROLLER_DEVICE_MASK, 1247 SMA1303_DEVICE_MODE, 1248 NULL); 1249 break; 1250 1251 case SND_SOC_DAIFMT_CBP_CFP: 1252 dev_dbg(component->dev, 1253 "%s : %s\n", __func__, "I2S/TDM Controller mode"); 1254 ret += sma1303_regmap_update_bits(sma1303, 1255 SMA1303_01_INPUT1_CTRL1, 1256 SMA1303_CONTROLLER_DEVICE_MASK, 1257 SMA1303_CONTROLLER_MODE, 1258 NULL); 1259 break; 1260 1261 default: 1262 dev_err(component->dev, 1263 "Unsupported Controller/Device : 0x%x\n", fmt); 1264 return -EINVAL; 1265 } 1266 1267 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 1268 1269 case SND_SOC_DAIFMT_I2S: 1270 case SND_SOC_DAIFMT_RIGHT_J: 1271 case SND_SOC_DAIFMT_LEFT_J: 1272 case SND_SOC_DAIFMT_DSP_A: 1273 case SND_SOC_DAIFMT_DSP_B: 1274 sma1303->format = fmt & SND_SOC_DAIFMT_FORMAT_MASK; 1275 break; 1276 default: 1277 dev_err(component->dev, 1278 "Unsupported Audio Interface Format : 0x%x\n", fmt); 1279 return -EINVAL; 1280 } 1281 1282 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 1283 1284 case SND_SOC_DAIFMT_IB_NF: 1285 dev_dbg(component->dev, "%s : %s\n", 1286 __func__, "Invert BCLK + Normal Frame"); 1287 ret += sma1303_regmap_update_bits(sma1303, 1288 SMA1303_01_INPUT1_CTRL1, 1289 SMA1303_SCK_RISING_MASK, 1290 SMA1303_SCK_RISING_EDGE, 1291 NULL); 1292 break; 1293 case SND_SOC_DAIFMT_IB_IF: 1294 dev_dbg(component->dev, "%s : %s\n", 1295 __func__, "Invert BCLK + Invert Frame"); 1296 ret += sma1303_regmap_update_bits(sma1303, 1297 SMA1303_01_INPUT1_CTRL1, 1298 SMA1303_LEFTPOL_MASK|SMA1303_SCK_RISING_MASK, 1299 SMA1303_HIGH_FIRST_CH|SMA1303_SCK_RISING_EDGE, 1300 NULL); 1301 break; 1302 case SND_SOC_DAIFMT_NB_IF: 1303 dev_dbg(component->dev, "%s : %s\n", 1304 __func__, "Normal BCLK + Invert Frame"); 1305 ret += sma1303_regmap_update_bits(sma1303, 1306 SMA1303_01_INPUT1_CTRL1, 1307 SMA1303_LEFTPOL_MASK, 1308 SMA1303_HIGH_FIRST_CH, 1309 NULL); 1310 break; 1311 case SND_SOC_DAIFMT_NB_NF: 1312 dev_dbg(component->dev, "%s : %s\n", 1313 __func__, "Normal BCLK + Normal Frame"); 1314 break; 1315 default: 1316 dev_err(component->dev, 1317 "Unsupported Bit & Frameclock : 0x%x\n", fmt); 1318 return -EINVAL; 1319 } 1320 1321 if (ret < 0) 1322 return -EINVAL; 1323 return 0; 1324 } 1325 1326 static int sma1303_dai_set_tdm_slot(struct snd_soc_dai *dai, 1327 unsigned int tx_mask, unsigned int rx_mask, 1328 int slots, int slot_width) 1329 { 1330 struct snd_soc_component *component = dai->component; 1331 struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component); 1332 int ret = 0; 1333 1334 dev_dbg(component->dev, "%s : slots = %d, slot_width - %d\n", 1335 __func__, slots, slot_width); 1336 1337 sma1303->frame_size = slot_width * slots; 1338 1339 ret += sma1303_regmap_update_bits(sma1303, 1340 SMA1303_A4_TOP_MAN3, 1341 SMA1303_O_FORMAT_MASK, 1342 SMA1303_O_FMT_TDM, 1343 NULL); 1344 1345 switch (slot_width) { 1346 case 16: 1347 ret += sma1303_regmap_update_bits(sma1303, 1348 SMA1303_A6_TDM2, 1349 SMA1303_TDM_DL_MASK, 1350 SMA1303_TDM_DL_16, 1351 NULL); 1352 break; 1353 case 32: 1354 ret += sma1303_regmap_update_bits(sma1303, 1355 SMA1303_A6_TDM2, 1356 SMA1303_TDM_DL_MASK, 1357 SMA1303_TDM_DL_32, 1358 NULL); 1359 break; 1360 default: 1361 dev_err(component->dev, "%s not support TDM %d slot_width\n", 1362 __func__, slot_width); 1363 break; 1364 } 1365 1366 switch (slots) { 1367 case 4: 1368 ret += sma1303_regmap_update_bits(sma1303, 1369 SMA1303_A6_TDM2, 1370 SMA1303_TDM_N_SLOT_MASK, 1371 SMA1303_TDM_N_SLOT_4, 1372 NULL); 1373 break; 1374 case 8: 1375 ret += sma1303_regmap_update_bits(sma1303, 1376 SMA1303_A6_TDM2, 1377 SMA1303_TDM_N_SLOT_MASK, 1378 SMA1303_TDM_N_SLOT_8, 1379 NULL); 1380 break; 1381 default: 1382 dev_err(component->dev, "%s not support TDM %d slots\n", 1383 __func__, slots); 1384 break; 1385 } 1386 1387 if (sma1303->tdm_slot_rx < slots) 1388 ret += sma1303_regmap_update_bits(sma1303, 1389 SMA1303_A5_TDM1, 1390 SMA1303_TDM_SLOT1_RX_POS_MASK, 1391 (sma1303->tdm_slot_rx) << 3, 1392 NULL); 1393 else 1394 dev_err(component->dev, "%s Incorrect tdm-slot-rx %d set\n", 1395 __func__, sma1303->tdm_slot_rx); 1396 1397 ret += sma1303_regmap_update_bits(sma1303, 1398 SMA1303_A5_TDM1, 1399 SMA1303_TDM_CLK_POL_MASK, 1400 SMA1303_TDM_CLK_POL_RISE, 1401 NULL); 1402 1403 ret += sma1303_regmap_update_bits(sma1303, 1404 SMA1303_A5_TDM1, 1405 SMA1303_TDM_TX_MODE_MASK, 1406 SMA1303_TDM_TX_MONO, 1407 NULL); 1408 1409 if (sma1303->tdm_slot_tx < slots) 1410 ret += sma1303_regmap_update_bits(sma1303, 1411 SMA1303_A6_TDM2, 1412 SMA1303_TDM_SLOT1_TX_POS_MASK, 1413 (sma1303->tdm_slot_tx) << 3, 1414 NULL); 1415 else 1416 dev_err(component->dev, "%s Incorrect tdm-slot-tx %d set\n", 1417 __func__, sma1303->tdm_slot_tx); 1418 1419 if (ret < 0) 1420 return -EINVAL; 1421 return 0; 1422 } 1423 1424 static const struct snd_soc_dai_ops sma1303_dai_ops_amp = { 1425 .set_sysclk = sma1303_dai_set_sysclk_amp, 1426 .set_fmt = sma1303_dai_set_fmt_amp, 1427 .hw_params = sma1303_dai_hw_params_amp, 1428 .mute_stream = sma1303_dai_mute, 1429 .set_tdm_slot = sma1303_dai_set_tdm_slot, 1430 }; 1431 1432 #define SMA1303_RATES SNDRV_PCM_RATE_8000_192000 1433 #define SMA1303_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE | \ 1434 SNDRV_PCM_FMTBIT_S32_LE) 1435 1436 static struct snd_soc_dai_driver sma1303_dai[] = { 1437 { 1438 .name = "sma1303-amplifier", 1439 .id = 0, 1440 .playback = { 1441 .stream_name = "Playback", 1442 .channels_min = 1, 1443 .channels_max = 2, 1444 .rates = SMA1303_RATES, 1445 .formats = SMA1303_FORMATS, 1446 }, 1447 .capture = { 1448 .stream_name = "Capture", 1449 .channels_min = 1, 1450 .channels_max = 2, 1451 .rates = SMA1303_RATES, 1452 .formats = SMA1303_FORMATS, 1453 }, 1454 .ops = &sma1303_dai_ops_amp, 1455 }, 1456 }; 1457 1458 static void sma1303_check_fault_worker(struct work_struct *work) 1459 { 1460 struct sma1303_priv *sma1303 = 1461 container_of(work, struct sma1303_priv, check_fault_work.work); 1462 int ret = 0; 1463 unsigned int over_temp, ocp_val, uvlo_val; 1464 1465 if (sma1303->tsdw_cnt) 1466 ret = sma1303_regmap_read(sma1303, 1467 SMA1303_0A_SPK_VOL, &sma1303->cur_vol); 1468 else 1469 ret = sma1303_regmap_read(sma1303, 1470 SMA1303_0A_SPK_VOL, &sma1303->init_vol); 1471 1472 if (ret != 0) { 1473 dev_err(sma1303->dev, 1474 "failed to read SMA1303_0A_SPK_VOL : %d\n", ret); 1475 return; 1476 } 1477 1478 ret = sma1303_regmap_read(sma1303, SMA1303_FA_STATUS1, &over_temp); 1479 if (ret != 0) { 1480 dev_err(sma1303->dev, 1481 "failed to read SMA1303_FA_STATUS1 : %d\n", ret); 1482 return; 1483 } 1484 1485 ret = sma1303_regmap_read(sma1303, SMA1303_FB_STATUS2, &ocp_val); 1486 if (ret != 0) { 1487 dev_err(sma1303->dev, 1488 "failed to read SMA1303_FB_STATUS2 : %d\n", ret); 1489 return; 1490 } 1491 1492 ret = sma1303_regmap_read(sma1303, SMA1303_FF_DEVICE_INDEX, &uvlo_val); 1493 if (ret != 0) { 1494 dev_err(sma1303->dev, 1495 "failed to read SMA1303_FF_DEVICE_INDEX : %d\n", ret); 1496 return; 1497 } 1498 1499 if (~over_temp & SMA1303_OT1_OK_STATUS) { 1500 dev_crit(sma1303->dev, 1501 "%s : OT1(Over Temperature Level 1)\n", __func__); 1502 1503 if ((sma1303->cur_vol + 6) <= 0xFF) 1504 sma1303_regmap_write(sma1303, 1505 SMA1303_0A_SPK_VOL, sma1303->cur_vol + 6); 1506 1507 sma1303->tsdw_cnt++; 1508 } else if (sma1303->tsdw_cnt) { 1509 sma1303_regmap_write(sma1303, 1510 SMA1303_0A_SPK_VOL, sma1303->init_vol); 1511 sma1303->tsdw_cnt = 0; 1512 sma1303->cur_vol = sma1303->init_vol; 1513 } 1514 1515 if (~over_temp & SMA1303_OT2_OK_STATUS) { 1516 dev_crit(sma1303->dev, 1517 "%s : OT2(Over Temperature Level 2)\n", __func__); 1518 } 1519 if (ocp_val & SMA1303_OCP_SPK_STATUS) { 1520 dev_crit(sma1303->dev, 1521 "%s : OCP_SPK(Over Current Protect SPK)\n", __func__); 1522 } 1523 if (ocp_val & SMA1303_OCP_BST_STATUS) { 1524 dev_crit(sma1303->dev, 1525 "%s : OCP_BST(Over Current Protect Boost)\n", __func__); 1526 } 1527 if ((ocp_val & SMA1303_CLK_MON_STATUS) && (sma1303->amp_power_status)) { 1528 dev_crit(sma1303->dev, 1529 "%s : CLK_FAULT(No clock input)\n", __func__); 1530 } 1531 if (uvlo_val & SMA1303_UVLO_BST_STATUS) { 1532 dev_crit(sma1303->dev, 1533 "%s : UVLO(Under Voltage Lock Out)\n", __func__); 1534 } 1535 1536 if ((over_temp != sma1303->last_over_temp) || 1537 (ocp_val != sma1303->last_ocp_val)) { 1538 1539 dev_crit(sma1303->dev, "Please check AMP status"); 1540 dev_dbg(sma1303->dev, "STATUS1=0x%02X : STATUS2=0x%02X\n", 1541 over_temp, ocp_val); 1542 sma1303->last_over_temp = over_temp; 1543 sma1303->last_ocp_val = ocp_val; 1544 } 1545 1546 if (sma1303->check_fault_status) { 1547 if (sma1303->check_fault_period > 0) 1548 queue_delayed_work(system_freezable_wq, 1549 &sma1303->check_fault_work, 1550 sma1303->check_fault_period * HZ); 1551 else 1552 queue_delayed_work(system_freezable_wq, 1553 &sma1303->check_fault_work, 1554 CHECK_PERIOD_TIME * HZ); 1555 } 1556 1557 if (!(~over_temp & SMA1303_OT1_OK_STATUS) 1558 && !(~over_temp & SMA1303_OT2_OK_STATUS) 1559 && !(ocp_val & SMA1303_OCP_SPK_STATUS) 1560 && !(ocp_val & SMA1303_OCP_BST_STATUS) 1561 && !(ocp_val & SMA1303_CLK_MON_STATUS) 1562 && !(uvlo_val & SMA1303_UVLO_BST_STATUS)) { 1563 } 1564 } 1565 1566 static int sma1303_probe(struct snd_soc_component *component) 1567 { 1568 struct snd_soc_dapm_context *dapm = 1569 snd_soc_component_get_dapm(component); 1570 1571 snd_soc_dapm_sync(dapm); 1572 1573 return 0; 1574 } 1575 1576 static void sma1303_remove(struct snd_soc_component *component) 1577 { 1578 struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component); 1579 1580 cancel_delayed_work_sync(&sma1303->check_fault_work); 1581 } 1582 1583 static const struct snd_soc_component_driver sma1303_component = { 1584 .probe = sma1303_probe, 1585 .remove = sma1303_remove, 1586 .controls = sma1303_snd_controls, 1587 .num_controls = ARRAY_SIZE(sma1303_snd_controls), 1588 .dapm_widgets = sma1303_dapm_widgets, 1589 .num_dapm_widgets = ARRAY_SIZE(sma1303_dapm_widgets), 1590 .dapm_routes = sma1303_audio_map, 1591 .num_dapm_routes = ARRAY_SIZE(sma1303_audio_map), 1592 }; 1593 1594 static const struct regmap_config sma_i2c_regmap = { 1595 .reg_bits = 8, 1596 .val_bits = 8, 1597 1598 .max_register = SMA1303_FF_DEVICE_INDEX, 1599 .readable_reg = sma1303_readable_register, 1600 .writeable_reg = sma1303_writeable_register, 1601 .volatile_reg = sma1303_volatile_register, 1602 1603 .cache_type = REGCACHE_NONE, 1604 .reg_defaults = sma1303_reg_def, 1605 .num_reg_defaults = ARRAY_SIZE(sma1303_reg_def), 1606 }; 1607 1608 static ssize_t check_fault_period_show(struct device *dev, 1609 struct device_attribute *devattr, char *buf) 1610 { 1611 struct sma1303_priv *sma1303 = dev_get_drvdata(dev); 1612 1613 return sysfs_emit(buf, "%ld\n", sma1303->check_fault_period); 1614 } 1615 1616 static ssize_t check_fault_period_store(struct device *dev, 1617 struct device_attribute *devattr, const char *buf, size_t count) 1618 { 1619 struct sma1303_priv *sma1303 = dev_get_drvdata(dev); 1620 int ret; 1621 1622 ret = kstrtol(buf, 10, &sma1303->check_fault_period); 1623 1624 if (ret) 1625 return -EINVAL; 1626 1627 return (ssize_t)count; 1628 } 1629 1630 static DEVICE_ATTR_RW(check_fault_period); 1631 1632 static ssize_t check_fault_status_show(struct device *dev, 1633 struct device_attribute *devattr, char *buf) 1634 { 1635 struct sma1303_priv *sma1303 = dev_get_drvdata(dev); 1636 1637 return sysfs_emit(buf, "%ld\n", sma1303->check_fault_status); 1638 } 1639 1640 static ssize_t check_fault_status_store(struct device *dev, 1641 struct device_attribute *devattr, const char *buf, size_t count) 1642 { 1643 struct sma1303_priv *sma1303 = dev_get_drvdata(dev); 1644 int ret; 1645 1646 ret = kstrtol(buf, 10, &sma1303->check_fault_status); 1647 1648 if (ret) 1649 return -EINVAL; 1650 1651 if (sma1303->check_fault_status) { 1652 if (sma1303->check_fault_period > 0) 1653 queue_delayed_work(system_freezable_wq, 1654 &sma1303->check_fault_work, 1655 sma1303->check_fault_period * HZ); 1656 else 1657 queue_delayed_work(system_freezable_wq, 1658 &sma1303->check_fault_work, 1659 CHECK_PERIOD_TIME * HZ); 1660 } 1661 1662 return (ssize_t)count; 1663 } 1664 1665 static DEVICE_ATTR_RW(check_fault_status); 1666 1667 static struct attribute *sma1303_attr[] = { 1668 &dev_attr_check_fault_period.attr, 1669 &dev_attr_check_fault_status.attr, 1670 NULL, 1671 }; 1672 1673 static struct attribute_group sma1303_attr_group = { 1674 .attrs = sma1303_attr, 1675 }; 1676 1677 static int sma1303_i2c_probe(struct i2c_client *client) 1678 { 1679 struct sma1303_priv *sma1303; 1680 int ret, i = 0; 1681 unsigned int device_info, status, otp_stat; 1682 1683 sma1303 = devm_kzalloc(&client->dev, 1684 sizeof(struct sma1303_priv), GFP_KERNEL); 1685 if (!sma1303) 1686 return -ENOMEM; 1687 sma1303->dev = &client->dev; 1688 1689 sma1303->regmap = devm_regmap_init_i2c(client, &sma_i2c_regmap); 1690 if (IS_ERR(sma1303->regmap)) { 1691 ret = PTR_ERR(sma1303->regmap); 1692 dev_err(&client->dev, 1693 "Failed to allocate register map: %d\n", ret); 1694 1695 return ret; 1696 } 1697 1698 ret = sma1303_regmap_read(sma1303, 1699 SMA1303_FF_DEVICE_INDEX, &device_info); 1700 1701 if ((ret != 0) || ((device_info & 0xF8) != SMA1303_DEVICE_ID)) { 1702 dev_err(&client->dev, "device initialization error (%d 0x%02X)", 1703 ret, device_info); 1704 } 1705 dev_dbg(&client->dev, "chip version 0x%02X\n", device_info); 1706 1707 ret += sma1303_regmap_update_bits(sma1303, 1708 SMA1303_00_SYSTEM_CTRL, 1709 SMA1303_RESETBYI2C_MASK, SMA1303_RESETBYI2C_RESET, 1710 NULL); 1711 1712 ret += sma1303_regmap_read(sma1303, SMA1303_FF_DEVICE_INDEX, &status); 1713 sma1303->rev_num = status & SMA1303_REV_NUM_STATUS; 1714 if (sma1303->rev_num == SMA1303_REV_NUM_TV0) 1715 dev_dbg(&client->dev, "SMA1303 Trimming Version 0\n"); 1716 else if (sma1303->rev_num == SMA1303_REV_NUM_TV1) 1717 dev_dbg(&client->dev, "SMA1303 Trimming Version 1\n"); 1718 1719 ret += sma1303_regmap_read(sma1303, SMA1303_FB_STATUS2, &otp_stat); 1720 if (ret < 0) 1721 dev_err(&client->dev, 1722 "failed to read, register: %02X, ret: %d\n", 1723 SMA1303_FF_DEVICE_INDEX, ret); 1724 1725 if (((sma1303->rev_num == SMA1303_REV_NUM_TV0) && 1726 ((otp_stat & 0x0E) == SMA1303_OTP_STAT_OK_0)) || 1727 ((sma1303->rev_num != SMA1303_REV_NUM_TV0) && 1728 ((otp_stat & 0x0C) == SMA1303_OTP_STAT_OK_1))) 1729 dev_dbg(&client->dev, "SMA1303 OTP Status Successful\n"); 1730 else 1731 dev_dbg(&client->dev, "SMA1303 OTP Status Fail\n"); 1732 1733 for (i = 0; i < (unsigned int)ARRAY_SIZE(sma1303_reg_def); i++) 1734 ret += sma1303_regmap_write(sma1303, 1735 sma1303_reg_def[i].reg, 1736 sma1303_reg_def[i].def); 1737 1738 sma1303->amp_mode = SMA1303_MONO; 1739 sma1303->amp_power_status = false; 1740 sma1303->check_fault_period = CHECK_PERIOD_TIME; 1741 sma1303->check_fault_status = true; 1742 sma1303->force_mute_status = false; 1743 sma1303->init_vol = 0x31; 1744 sma1303->cur_vol = sma1303->init_vol; 1745 sma1303->last_bclk = 0; 1746 sma1303->last_ocp_val = 0x08; 1747 sma1303->last_over_temp = 0xC0; 1748 sma1303->tsdw_cnt = 0; 1749 sma1303->retry_cnt = SMA1303_I2C_RETRY_COUNT; 1750 sma1303->tdm_slot_rx = 0; 1751 sma1303->tdm_slot_tx = 0; 1752 sma1303->sys_clk_id = SMA1303_PLL_CLKIN_BCLK; 1753 1754 sma1303->dev = &client->dev; 1755 sma1303->kobj = &client->dev.kobj; 1756 1757 INIT_DELAYED_WORK(&sma1303->check_fault_work, 1758 sma1303_check_fault_worker); 1759 1760 i2c_set_clientdata(client, sma1303); 1761 1762 sma1303->pll_matches = sma1303_pll_matches; 1763 sma1303->num_of_pll_matches = 1764 ARRAY_SIZE(sma1303_pll_matches); 1765 1766 ret = devm_snd_soc_register_component(&client->dev, 1767 &sma1303_component, sma1303_dai, 1); 1768 if (ret) { 1769 dev_err(&client->dev, "Failed to register component"); 1770 1771 return ret; 1772 } 1773 1774 sma1303->attr_grp = &sma1303_attr_group; 1775 ret = sysfs_create_group(sma1303->kobj, sma1303->attr_grp); 1776 if (ret) { 1777 dev_err(&client->dev, 1778 "failed to create attribute group [%d]\n", ret); 1779 sma1303->attr_grp = NULL; 1780 } 1781 1782 return ret; 1783 } 1784 1785 static void sma1303_i2c_remove(struct i2c_client *client) 1786 { 1787 struct sma1303_priv *sma1303 = 1788 (struct sma1303_priv *) i2c_get_clientdata(client); 1789 1790 cancel_delayed_work_sync(&sma1303->check_fault_work); 1791 } 1792 1793 static const struct i2c_device_id sma1303_i2c_id[] = { 1794 {"sma1303", 0}, 1795 {} 1796 }; 1797 MODULE_DEVICE_TABLE(i2c, sma1303_i2c_id); 1798 1799 static const struct of_device_id sma1303_of_match[] = { 1800 { .compatible = "irondevice,sma1303", }, 1801 { } 1802 }; 1803 MODULE_DEVICE_TABLE(of, sma1303_of_match); 1804 1805 static struct i2c_driver sma1303_i2c_driver = { 1806 .driver = { 1807 .name = "sma1303", 1808 .of_match_table = sma1303_of_match, 1809 }, 1810 .probe = sma1303_i2c_probe, 1811 .remove = sma1303_i2c_remove, 1812 .id_table = sma1303_i2c_id, 1813 }; 1814 1815 module_i2c_driver(sma1303_i2c_driver); 1816 1817 MODULE_DESCRIPTION("ALSA SoC SMA1303 driver"); 1818 MODULE_AUTHOR("Gyuhwa Park, <gyuhwa.park@irondevice.com>"); 1819 MODULE_AUTHOR("Kiseok Jo, <kiseok.jo@irondevice.com>"); 1820 MODULE_LICENSE("GPL v2"); 1821