1 /* 2 * TI TSC2102 (touchscreen/sensors/audio controller) emulator. 3 * TI TSC2301 (touchscreen/sensors/keypad). 4 * 5 * Copyright (c) 2006 Andrzej Zaborowski <balrog@zabor.org> 6 * Copyright (C) 2008 Nokia Corporation 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License as 10 * published by the Free Software Foundation; either version 2 or 11 * (at your option) version 3 of the License. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License along 19 * with this program; if not, see <http://www.gnu.org/licenses/>. 20 */ 21 22 #include "qemu/osdep.h" 23 #include "hw/hw.h" 24 #include "audio/audio.h" 25 #include "qemu/timer.h" 26 #include "ui/console.h" 27 #include "hw/arm/omap.h" /* For I2SCodec and uWireSlave */ 28 #include "hw/devices.h" 29 30 #define TSC_DATA_REGISTERS_PAGE 0x0 31 #define TSC_CONTROL_REGISTERS_PAGE 0x1 32 #define TSC_AUDIO_REGISTERS_PAGE 0x2 33 34 #define TSC_VERBOSE 35 36 #define TSC_CUT_RESOLUTION(value, p) ((value) >> (16 - resolution[p])) 37 38 typedef struct { 39 qemu_irq pint; 40 qemu_irq kbint; 41 qemu_irq davint; 42 QEMUTimer *timer; 43 QEMUSoundCard card; 44 uWireSlave chip; 45 I2SCodec codec; 46 uint8_t in_fifo[16384]; 47 uint8_t out_fifo[16384]; 48 uint16_t model; 49 50 int x, y; 51 int pressure; 52 53 int state, page, offset, irq; 54 uint16_t command, dav; 55 56 int busy; 57 int enabled; 58 int host_mode; 59 int function; 60 int nextfunction; 61 int precision; 62 int nextprecision; 63 int filter; 64 int pin_func; 65 int ref; 66 int timing; 67 int noise; 68 69 uint16_t audio_ctrl1; 70 uint16_t audio_ctrl2; 71 uint16_t audio_ctrl3; 72 uint16_t pll[3]; 73 uint16_t volume; 74 int64_t volume_change; 75 int softstep; 76 uint16_t dac_power; 77 int64_t powerdown; 78 uint16_t filter_data[0x14]; 79 80 const char *name; 81 SWVoiceIn *adc_voice[1]; 82 SWVoiceOut *dac_voice[1]; 83 int i2s_rx_rate; 84 int i2s_tx_rate; 85 86 int tr[8]; 87 88 struct { 89 uint16_t down; 90 uint16_t mask; 91 int scan; 92 int debounce; 93 int mode; 94 int intr; 95 } kb; 96 } TSC210xState; 97 98 static const int resolution[4] = { 12, 8, 10, 12 }; 99 100 #define TSC_MODE_NO_SCAN 0x0 101 #define TSC_MODE_XY_SCAN 0x1 102 #define TSC_MODE_XYZ_SCAN 0x2 103 #define TSC_MODE_X 0x3 104 #define TSC_MODE_Y 0x4 105 #define TSC_MODE_Z 0x5 106 #define TSC_MODE_BAT1 0x6 107 #define TSC_MODE_BAT2 0x7 108 #define TSC_MODE_AUX 0x8 109 #define TSC_MODE_AUX_SCAN 0x9 110 #define TSC_MODE_TEMP1 0xa 111 #define TSC_MODE_PORT_SCAN 0xb 112 #define TSC_MODE_TEMP2 0xc 113 #define TSC_MODE_XX_DRV 0xd 114 #define TSC_MODE_YY_DRV 0xe 115 #define TSC_MODE_YX_DRV 0xf 116 117 static const uint16_t mode_regs[16] = { 118 0x0000, /* No scan */ 119 0x0600, /* X, Y scan */ 120 0x0780, /* X, Y, Z scan */ 121 0x0400, /* X */ 122 0x0200, /* Y */ 123 0x0180, /* Z */ 124 0x0040, /* BAT1 */ 125 0x0030, /* BAT2 */ 126 0x0010, /* AUX */ 127 0x0010, /* AUX scan */ 128 0x0004, /* TEMP1 */ 129 0x0070, /* Port scan */ 130 0x0002, /* TEMP2 */ 131 0x0000, /* X+, X- drivers */ 132 0x0000, /* Y+, Y- drivers */ 133 0x0000, /* Y+, X- drivers */ 134 }; 135 136 #define X_TRANSFORM(s) \ 137 ((s->y * s->tr[0] - s->x * s->tr[1]) / s->tr[2] + s->tr[3]) 138 #define Y_TRANSFORM(s) \ 139 ((s->y * s->tr[4] - s->x * s->tr[5]) / s->tr[6] + s->tr[7]) 140 #define Z1_TRANSFORM(s) \ 141 ((400 - ((s)->x >> 7) + ((s)->pressure << 10)) << 4) 142 #define Z2_TRANSFORM(s) \ 143 ((4000 + ((s)->y >> 7) - ((s)->pressure << 10)) << 4) 144 145 #define BAT1_VAL 0x8660 146 #define BAT2_VAL 0x0000 147 #define AUX1_VAL 0x35c0 148 #define AUX2_VAL 0xffff 149 #define TEMP1_VAL 0x8c70 150 #define TEMP2_VAL 0xa5b0 151 152 #define TSC_POWEROFF_DELAY 50 153 #define TSC_SOFTSTEP_DELAY 50 154 155 static void tsc210x_reset(TSC210xState *s) 156 { 157 s->state = 0; 158 s->pin_func = 2; 159 s->enabled = 0; 160 s->busy = 0; 161 s->nextfunction = 0; 162 s->ref = 0; 163 s->timing = 0; 164 s->irq = 0; 165 s->dav = 0; 166 167 s->audio_ctrl1 = 0x0000; 168 s->audio_ctrl2 = 0x4410; 169 s->audio_ctrl3 = 0x0000; 170 s->pll[0] = 0x1004; 171 s->pll[1] = 0x0000; 172 s->pll[2] = 0x1fff; 173 s->volume = 0xffff; 174 s->dac_power = 0x8540; 175 s->softstep = 1; 176 s->volume_change = 0; 177 s->powerdown = 0; 178 s->filter_data[0x00] = 0x6be3; 179 s->filter_data[0x01] = 0x9666; 180 s->filter_data[0x02] = 0x675d; 181 s->filter_data[0x03] = 0x6be3; 182 s->filter_data[0x04] = 0x9666; 183 s->filter_data[0x05] = 0x675d; 184 s->filter_data[0x06] = 0x7d83; 185 s->filter_data[0x07] = 0x84ee; 186 s->filter_data[0x08] = 0x7d83; 187 s->filter_data[0x09] = 0x84ee; 188 s->filter_data[0x0a] = 0x6be3; 189 s->filter_data[0x0b] = 0x9666; 190 s->filter_data[0x0c] = 0x675d; 191 s->filter_data[0x0d] = 0x6be3; 192 s->filter_data[0x0e] = 0x9666; 193 s->filter_data[0x0f] = 0x675d; 194 s->filter_data[0x10] = 0x7d83; 195 s->filter_data[0x11] = 0x84ee; 196 s->filter_data[0x12] = 0x7d83; 197 s->filter_data[0x13] = 0x84ee; 198 199 s->i2s_tx_rate = 0; 200 s->i2s_rx_rate = 0; 201 202 s->kb.scan = 1; 203 s->kb.debounce = 0; 204 s->kb.mask = 0x0000; 205 s->kb.mode = 3; 206 s->kb.intr = 0; 207 208 qemu_set_irq(s->pint, !s->irq); 209 qemu_set_irq(s->davint, !s->dav); 210 qemu_irq_raise(s->kbint); 211 } 212 213 typedef struct { 214 int rate; 215 int dsor; 216 int fsref; 217 } TSC210xRateInfo; 218 219 /* { rate, dsor, fsref } */ 220 static const TSC210xRateInfo tsc2102_rates[] = { 221 /* Fsref / 6.0 */ 222 { 7350, 63, 1 }, 223 { 8000, 63, 0 }, 224 /* Fsref / 6.0 */ 225 { 7350, 54, 1 }, 226 { 8000, 54, 0 }, 227 /* Fsref / 5.0 */ 228 { 8820, 45, 1 }, 229 { 9600, 45, 0 }, 230 /* Fsref / 4.0 */ 231 { 11025, 36, 1 }, 232 { 12000, 36, 0 }, 233 /* Fsref / 3.0 */ 234 { 14700, 27, 1 }, 235 { 16000, 27, 0 }, 236 /* Fsref / 2.0 */ 237 { 22050, 18, 1 }, 238 { 24000, 18, 0 }, 239 /* Fsref / 1.5 */ 240 { 29400, 9, 1 }, 241 { 32000, 9, 0 }, 242 /* Fsref */ 243 { 44100, 0, 1 }, 244 { 48000, 0, 0 }, 245 246 { 0, 0, 0 }, 247 }; 248 249 static inline void tsc210x_out_flush(TSC210xState *s, int len) 250 { 251 uint8_t *data = s->codec.out.fifo + s->codec.out.start; 252 uint8_t *end = data + len; 253 254 while (data < end) 255 data += AUD_write(s->dac_voice[0], data, end - data) ?: (end - data); 256 257 s->codec.out.len -= len; 258 if (s->codec.out.len) 259 memmove(s->codec.out.fifo, end, s->codec.out.len); 260 s->codec.out.start = 0; 261 } 262 263 static void tsc210x_audio_out_cb(TSC210xState *s, int free_b) 264 { 265 if (s->codec.out.len >= free_b) { 266 tsc210x_out_flush(s, free_b); 267 return; 268 } 269 270 s->codec.out.size = MIN(free_b, 16384); 271 qemu_irq_raise(s->codec.tx_start); 272 } 273 274 static void tsc2102_audio_rate_update(TSC210xState *s) 275 { 276 const TSC210xRateInfo *rate; 277 278 s->codec.tx_rate = 0; 279 s->codec.rx_rate = 0; 280 if (s->dac_power & (1 << 15)) /* PWDNC */ 281 return; 282 283 for (rate = tsc2102_rates; rate->rate; rate ++) 284 if (rate->dsor == (s->audio_ctrl1 & 0x3f) && /* DACFS */ 285 rate->fsref == ((s->audio_ctrl3 >> 13) & 1))/* REFFS */ 286 break; 287 if (!rate->rate) { 288 printf("%s: unknown sampling rate configured\n", __FUNCTION__); 289 return; 290 } 291 292 s->codec.tx_rate = rate->rate; 293 } 294 295 static void tsc2102_audio_output_update(TSC210xState *s) 296 { 297 int enable; 298 struct audsettings fmt; 299 300 if (s->dac_voice[0]) { 301 tsc210x_out_flush(s, s->codec.out.len); 302 s->codec.out.size = 0; 303 AUD_set_active_out(s->dac_voice[0], 0); 304 AUD_close_out(&s->card, s->dac_voice[0]); 305 s->dac_voice[0] = NULL; 306 } 307 s->codec.cts = 0; 308 309 enable = 310 (~s->dac_power & (1 << 15)) && /* PWDNC */ 311 (~s->dac_power & (1 << 10)); /* DAPWDN */ 312 if (!enable || !s->codec.tx_rate) 313 return; 314 315 /* Force our own sampling rate even in slave DAC mode */ 316 fmt.endianness = 0; 317 fmt.nchannels = 2; 318 fmt.freq = s->codec.tx_rate; 319 fmt.fmt = AUD_FMT_S16; 320 321 s->dac_voice[0] = AUD_open_out(&s->card, s->dac_voice[0], 322 "tsc2102.sink", s, (void *) tsc210x_audio_out_cb, &fmt); 323 if (s->dac_voice[0]) { 324 s->codec.cts = 1; 325 AUD_set_active_out(s->dac_voice[0], 1); 326 } 327 } 328 329 static uint16_t tsc2102_data_register_read(TSC210xState *s, int reg) 330 { 331 switch (reg) { 332 case 0x00: /* X */ 333 s->dav &= 0xfbff; 334 return TSC_CUT_RESOLUTION(X_TRANSFORM(s), s->precision) + 335 (s->noise & 3); 336 337 case 0x01: /* Y */ 338 s->noise ++; 339 s->dav &= 0xfdff; 340 return TSC_CUT_RESOLUTION(Y_TRANSFORM(s), s->precision) ^ 341 (s->noise & 3); 342 343 case 0x02: /* Z1 */ 344 s->dav &= 0xfeff; 345 return TSC_CUT_RESOLUTION(Z1_TRANSFORM(s), s->precision) - 346 (s->noise & 3); 347 348 case 0x03: /* Z2 */ 349 s->dav &= 0xff7f; 350 return TSC_CUT_RESOLUTION(Z2_TRANSFORM(s), s->precision) | 351 (s->noise & 3); 352 353 case 0x04: /* KPData */ 354 if ((s->model & 0xff00) == 0x2300) { 355 if (s->kb.intr && (s->kb.mode & 2)) { 356 s->kb.intr = 0; 357 qemu_irq_raise(s->kbint); 358 } 359 return s->kb.down; 360 } 361 362 return 0xffff; 363 364 case 0x05: /* BAT1 */ 365 s->dav &= 0xffbf; 366 return TSC_CUT_RESOLUTION(BAT1_VAL, s->precision) + 367 (s->noise & 6); 368 369 case 0x06: /* BAT2 */ 370 s->dav &= 0xffdf; 371 return TSC_CUT_RESOLUTION(BAT2_VAL, s->precision); 372 373 case 0x07: /* AUX1 */ 374 s->dav &= 0xffef; 375 return TSC_CUT_RESOLUTION(AUX1_VAL, s->precision); 376 377 case 0x08: /* AUX2 */ 378 s->dav &= 0xfff7; 379 return 0xffff; 380 381 case 0x09: /* TEMP1 */ 382 s->dav &= 0xfffb; 383 return TSC_CUT_RESOLUTION(TEMP1_VAL, s->precision) - 384 (s->noise & 5); 385 386 case 0x0a: /* TEMP2 */ 387 s->dav &= 0xfffd; 388 return TSC_CUT_RESOLUTION(TEMP2_VAL, s->precision) ^ 389 (s->noise & 3); 390 391 case 0x0b: /* DAC */ 392 s->dav &= 0xfffe; 393 return 0xffff; 394 395 default: 396 #ifdef TSC_VERBOSE 397 fprintf(stderr, "tsc2102_data_register_read: " 398 "no such register: 0x%02x\n", reg); 399 #endif 400 return 0xffff; 401 } 402 } 403 404 static uint16_t tsc2102_control_register_read( 405 TSC210xState *s, int reg) 406 { 407 switch (reg) { 408 case 0x00: /* TSC ADC */ 409 return (s->pressure << 15) | ((!s->busy) << 14) | 410 (s->nextfunction << 10) | (s->nextprecision << 8) | s->filter; 411 412 case 0x01: /* Status / Keypad Control */ 413 if ((s->model & 0xff00) == 0x2100) 414 return (s->pin_func << 14) | ((!s->enabled) << 13) | 415 (s->host_mode << 12) | ((!!s->dav) << 11) | s->dav; 416 else 417 return (s->kb.intr << 15) | ((s->kb.scan || !s->kb.down) << 14) | 418 (s->kb.debounce << 11); 419 420 case 0x02: /* DAC Control */ 421 if ((s->model & 0xff00) == 0x2300) 422 return s->dac_power & 0x8000; 423 else 424 goto bad_reg; 425 426 case 0x03: /* Reference */ 427 return s->ref; 428 429 case 0x04: /* Reset */ 430 return 0xffff; 431 432 case 0x05: /* Configuration */ 433 return s->timing; 434 435 case 0x06: /* Secondary configuration */ 436 if ((s->model & 0xff00) == 0x2100) 437 goto bad_reg; 438 return ((!s->dav) << 15) | ((s->kb.mode & 1) << 14) | s->pll[2]; 439 440 case 0x10: /* Keypad Mask */ 441 if ((s->model & 0xff00) == 0x2100) 442 goto bad_reg; 443 return s->kb.mask; 444 445 default: 446 bad_reg: 447 #ifdef TSC_VERBOSE 448 fprintf(stderr, "tsc2102_control_register_read: " 449 "no such register: 0x%02x\n", reg); 450 #endif 451 return 0xffff; 452 } 453 } 454 455 static uint16_t tsc2102_audio_register_read(TSC210xState *s, int reg) 456 { 457 int l_ch, r_ch; 458 uint16_t val; 459 460 switch (reg) { 461 case 0x00: /* Audio Control 1 */ 462 return s->audio_ctrl1; 463 464 case 0x01: 465 return 0xff00; 466 467 case 0x02: /* DAC Volume Control */ 468 return s->volume; 469 470 case 0x03: 471 return 0x8b00; 472 473 case 0x04: /* Audio Control 2 */ 474 l_ch = 1; 475 r_ch = 1; 476 if (s->softstep && !(s->dac_power & (1 << 10))) { 477 l_ch = (qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) > 478 s->volume_change + TSC_SOFTSTEP_DELAY); 479 r_ch = (qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) > 480 s->volume_change + TSC_SOFTSTEP_DELAY); 481 } 482 483 return s->audio_ctrl2 | (l_ch << 3) | (r_ch << 2); 484 485 case 0x05: /* Stereo DAC Power Control */ 486 return 0x2aa0 | s->dac_power | 487 (((s->dac_power & (1 << 10)) && 488 (qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) > 489 s->powerdown + TSC_POWEROFF_DELAY)) << 6); 490 491 case 0x06: /* Audio Control 3 */ 492 val = s->audio_ctrl3 | 0x0001; 493 s->audio_ctrl3 &= 0xff3f; 494 return val; 495 496 case 0x07: /* LCH_BASS_BOOST_N0 */ 497 case 0x08: /* LCH_BASS_BOOST_N1 */ 498 case 0x09: /* LCH_BASS_BOOST_N2 */ 499 case 0x0a: /* LCH_BASS_BOOST_N3 */ 500 case 0x0b: /* LCH_BASS_BOOST_N4 */ 501 case 0x0c: /* LCH_BASS_BOOST_N5 */ 502 case 0x0d: /* LCH_BASS_BOOST_D1 */ 503 case 0x0e: /* LCH_BASS_BOOST_D2 */ 504 case 0x0f: /* LCH_BASS_BOOST_D4 */ 505 case 0x10: /* LCH_BASS_BOOST_D5 */ 506 case 0x11: /* RCH_BASS_BOOST_N0 */ 507 case 0x12: /* RCH_BASS_BOOST_N1 */ 508 case 0x13: /* RCH_BASS_BOOST_N2 */ 509 case 0x14: /* RCH_BASS_BOOST_N3 */ 510 case 0x15: /* RCH_BASS_BOOST_N4 */ 511 case 0x16: /* RCH_BASS_BOOST_N5 */ 512 case 0x17: /* RCH_BASS_BOOST_D1 */ 513 case 0x18: /* RCH_BASS_BOOST_D2 */ 514 case 0x19: /* RCH_BASS_BOOST_D4 */ 515 case 0x1a: /* RCH_BASS_BOOST_D5 */ 516 return s->filter_data[reg - 0x07]; 517 518 case 0x1b: /* PLL Programmability 1 */ 519 return s->pll[0]; 520 521 case 0x1c: /* PLL Programmability 2 */ 522 return s->pll[1]; 523 524 case 0x1d: /* Audio Control 4 */ 525 return (!s->softstep) << 14; 526 527 default: 528 #ifdef TSC_VERBOSE 529 fprintf(stderr, "tsc2102_audio_register_read: " 530 "no such register: 0x%02x\n", reg); 531 #endif 532 return 0xffff; 533 } 534 } 535 536 static void tsc2102_data_register_write( 537 TSC210xState *s, int reg, uint16_t value) 538 { 539 switch (reg) { 540 case 0x00: /* X */ 541 case 0x01: /* Y */ 542 case 0x02: /* Z1 */ 543 case 0x03: /* Z2 */ 544 case 0x05: /* BAT1 */ 545 case 0x06: /* BAT2 */ 546 case 0x07: /* AUX1 */ 547 case 0x08: /* AUX2 */ 548 case 0x09: /* TEMP1 */ 549 case 0x0a: /* TEMP2 */ 550 return; 551 552 default: 553 #ifdef TSC_VERBOSE 554 fprintf(stderr, "tsc2102_data_register_write: " 555 "no such register: 0x%02x\n", reg); 556 #endif 557 } 558 } 559 560 static void tsc2102_control_register_write( 561 TSC210xState *s, int reg, uint16_t value) 562 { 563 switch (reg) { 564 case 0x00: /* TSC ADC */ 565 s->host_mode = value >> 15; 566 s->enabled = !(value & 0x4000); 567 if (s->busy && !s->enabled) 568 timer_del(s->timer); 569 s->busy &= s->enabled; 570 s->nextfunction = (value >> 10) & 0xf; 571 s->nextprecision = (value >> 8) & 3; 572 s->filter = value & 0xff; 573 return; 574 575 case 0x01: /* Status / Keypad Control */ 576 if ((s->model & 0xff00) == 0x2100) 577 s->pin_func = value >> 14; 578 else { 579 s->kb.scan = (value >> 14) & 1; 580 s->kb.debounce = (value >> 11) & 7; 581 if (s->kb.intr && s->kb.scan) { 582 s->kb.intr = 0; 583 qemu_irq_raise(s->kbint); 584 } 585 } 586 return; 587 588 case 0x02: /* DAC Control */ 589 if ((s->model & 0xff00) == 0x2300) { 590 s->dac_power &= 0x7fff; 591 s->dac_power |= 0x8000 & value; 592 } else 593 goto bad_reg; 594 break; 595 596 case 0x03: /* Reference */ 597 s->ref = value & 0x1f; 598 return; 599 600 case 0x04: /* Reset */ 601 if (value == 0xbb00) { 602 if (s->busy) 603 timer_del(s->timer); 604 tsc210x_reset(s); 605 #ifdef TSC_VERBOSE 606 } else { 607 fprintf(stderr, "tsc2102_control_register_write: " 608 "wrong value written into RESET\n"); 609 #endif 610 } 611 return; 612 613 case 0x05: /* Configuration */ 614 s->timing = value & 0x3f; 615 #ifdef TSC_VERBOSE 616 if (value & ~0x3f) 617 fprintf(stderr, "tsc2102_control_register_write: " 618 "wrong value written into CONFIG\n"); 619 #endif 620 return; 621 622 case 0x06: /* Secondary configuration */ 623 if ((s->model & 0xff00) == 0x2100) 624 goto bad_reg; 625 s->kb.mode = value >> 14; 626 s->pll[2] = value & 0x3ffff; 627 return; 628 629 case 0x10: /* Keypad Mask */ 630 if ((s->model & 0xff00) == 0x2100) 631 goto bad_reg; 632 s->kb.mask = value; 633 return; 634 635 default: 636 bad_reg: 637 #ifdef TSC_VERBOSE 638 fprintf(stderr, "tsc2102_control_register_write: " 639 "no such register: 0x%02x\n", reg); 640 #endif 641 } 642 } 643 644 static void tsc2102_audio_register_write( 645 TSC210xState *s, int reg, uint16_t value) 646 { 647 switch (reg) { 648 case 0x00: /* Audio Control 1 */ 649 s->audio_ctrl1 = value & 0x0f3f; 650 #ifdef TSC_VERBOSE 651 if ((value & ~0x0f3f) || ((value & 7) != ((value >> 3) & 7))) 652 fprintf(stderr, "tsc2102_audio_register_write: " 653 "wrong value written into Audio 1\n"); 654 #endif 655 tsc2102_audio_rate_update(s); 656 tsc2102_audio_output_update(s); 657 return; 658 659 case 0x01: 660 #ifdef TSC_VERBOSE 661 if (value != 0xff00) 662 fprintf(stderr, "tsc2102_audio_register_write: " 663 "wrong value written into reg 0x01\n"); 664 #endif 665 return; 666 667 case 0x02: /* DAC Volume Control */ 668 s->volume = value; 669 s->volume_change = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); 670 return; 671 672 case 0x03: 673 #ifdef TSC_VERBOSE 674 if (value != 0x8b00) 675 fprintf(stderr, "tsc2102_audio_register_write: " 676 "wrong value written into reg 0x03\n"); 677 #endif 678 return; 679 680 case 0x04: /* Audio Control 2 */ 681 s->audio_ctrl2 = value & 0xf7f2; 682 #ifdef TSC_VERBOSE 683 if (value & ~0xf7fd) 684 fprintf(stderr, "tsc2102_audio_register_write: " 685 "wrong value written into Audio 2\n"); 686 #endif 687 return; 688 689 case 0x05: /* Stereo DAC Power Control */ 690 if ((value & ~s->dac_power) & (1 << 10)) 691 s->powerdown = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); 692 693 s->dac_power = value & 0x9543; 694 #ifdef TSC_VERBOSE 695 if ((value & ~0x9543) != 0x2aa0) 696 fprintf(stderr, "tsc2102_audio_register_write: " 697 "wrong value written into Power\n"); 698 #endif 699 tsc2102_audio_rate_update(s); 700 tsc2102_audio_output_update(s); 701 return; 702 703 case 0x06: /* Audio Control 3 */ 704 s->audio_ctrl3 &= 0x00c0; 705 s->audio_ctrl3 |= value & 0xf800; 706 #ifdef TSC_VERBOSE 707 if (value & ~0xf8c7) 708 fprintf(stderr, "tsc2102_audio_register_write: " 709 "wrong value written into Audio 3\n"); 710 #endif 711 tsc2102_audio_output_update(s); 712 return; 713 714 case 0x07: /* LCH_BASS_BOOST_N0 */ 715 case 0x08: /* LCH_BASS_BOOST_N1 */ 716 case 0x09: /* LCH_BASS_BOOST_N2 */ 717 case 0x0a: /* LCH_BASS_BOOST_N3 */ 718 case 0x0b: /* LCH_BASS_BOOST_N4 */ 719 case 0x0c: /* LCH_BASS_BOOST_N5 */ 720 case 0x0d: /* LCH_BASS_BOOST_D1 */ 721 case 0x0e: /* LCH_BASS_BOOST_D2 */ 722 case 0x0f: /* LCH_BASS_BOOST_D4 */ 723 case 0x10: /* LCH_BASS_BOOST_D5 */ 724 case 0x11: /* RCH_BASS_BOOST_N0 */ 725 case 0x12: /* RCH_BASS_BOOST_N1 */ 726 case 0x13: /* RCH_BASS_BOOST_N2 */ 727 case 0x14: /* RCH_BASS_BOOST_N3 */ 728 case 0x15: /* RCH_BASS_BOOST_N4 */ 729 case 0x16: /* RCH_BASS_BOOST_N5 */ 730 case 0x17: /* RCH_BASS_BOOST_D1 */ 731 case 0x18: /* RCH_BASS_BOOST_D2 */ 732 case 0x19: /* RCH_BASS_BOOST_D4 */ 733 case 0x1a: /* RCH_BASS_BOOST_D5 */ 734 s->filter_data[reg - 0x07] = value; 735 return; 736 737 case 0x1b: /* PLL Programmability 1 */ 738 s->pll[0] = value & 0xfffc; 739 #ifdef TSC_VERBOSE 740 if (value & ~0xfffc) 741 fprintf(stderr, "tsc2102_audio_register_write: " 742 "wrong value written into PLL 1\n"); 743 #endif 744 return; 745 746 case 0x1c: /* PLL Programmability 2 */ 747 s->pll[1] = value & 0xfffc; 748 #ifdef TSC_VERBOSE 749 if (value & ~0xfffc) 750 fprintf(stderr, "tsc2102_audio_register_write: " 751 "wrong value written into PLL 2\n"); 752 #endif 753 return; 754 755 case 0x1d: /* Audio Control 4 */ 756 s->softstep = !(value & 0x4000); 757 #ifdef TSC_VERBOSE 758 if (value & ~0x4000) 759 fprintf(stderr, "tsc2102_audio_register_write: " 760 "wrong value written into Audio 4\n"); 761 #endif 762 return; 763 764 default: 765 #ifdef TSC_VERBOSE 766 fprintf(stderr, "tsc2102_audio_register_write: " 767 "no such register: 0x%02x\n", reg); 768 #endif 769 } 770 } 771 772 /* This handles most of the chip logic. */ 773 static void tsc210x_pin_update(TSC210xState *s) 774 { 775 int64_t expires; 776 int pin_state; 777 778 switch (s->pin_func) { 779 case 0: 780 pin_state = s->pressure; 781 break; 782 case 1: 783 pin_state = !!s->dav; 784 break; 785 case 2: 786 default: 787 pin_state = s->pressure && !s->dav; 788 } 789 790 if (!s->enabled) 791 pin_state = 0; 792 793 if (pin_state != s->irq) { 794 s->irq = pin_state; 795 qemu_set_irq(s->pint, !s->irq); 796 } 797 798 switch (s->nextfunction) { 799 case TSC_MODE_XY_SCAN: 800 case TSC_MODE_XYZ_SCAN: 801 if (!s->pressure) 802 return; 803 break; 804 805 case TSC_MODE_X: 806 case TSC_MODE_Y: 807 case TSC_MODE_Z: 808 if (!s->pressure) 809 return; 810 /* Fall through */ 811 case TSC_MODE_BAT1: 812 case TSC_MODE_BAT2: 813 case TSC_MODE_AUX: 814 case TSC_MODE_TEMP1: 815 case TSC_MODE_TEMP2: 816 if (s->dav) 817 s->enabled = 0; 818 break; 819 820 case TSC_MODE_AUX_SCAN: 821 case TSC_MODE_PORT_SCAN: 822 break; 823 824 case TSC_MODE_NO_SCAN: 825 case TSC_MODE_XX_DRV: 826 case TSC_MODE_YY_DRV: 827 case TSC_MODE_YX_DRV: 828 default: 829 return; 830 } 831 832 if (!s->enabled || s->busy || s->dav) 833 return; 834 835 s->busy = 1; 836 s->precision = s->nextprecision; 837 s->function = s->nextfunction; 838 expires = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + (get_ticks_per_sec() >> 10); 839 timer_mod(s->timer, expires); 840 } 841 842 static uint16_t tsc210x_read(TSC210xState *s) 843 { 844 uint16_t ret = 0x0000; 845 846 if (!s->command) 847 fprintf(stderr, "tsc210x_read: SPI underrun!\n"); 848 849 switch (s->page) { 850 case TSC_DATA_REGISTERS_PAGE: 851 ret = tsc2102_data_register_read(s, s->offset); 852 if (!s->dav) 853 qemu_irq_raise(s->davint); 854 break; 855 case TSC_CONTROL_REGISTERS_PAGE: 856 ret = tsc2102_control_register_read(s, s->offset); 857 break; 858 case TSC_AUDIO_REGISTERS_PAGE: 859 ret = tsc2102_audio_register_read(s, s->offset); 860 break; 861 default: 862 hw_error("tsc210x_read: wrong memory page\n"); 863 } 864 865 tsc210x_pin_update(s); 866 867 /* Allow sequential reads. */ 868 s->offset ++; 869 s->state = 0; 870 return ret; 871 } 872 873 static void tsc210x_write(TSC210xState *s, uint16_t value) 874 { 875 /* 876 * This is a two-state state machine for reading 877 * command and data every second time. 878 */ 879 if (!s->state) { 880 s->command = value >> 15; 881 s->page = (value >> 11) & 0x0f; 882 s->offset = (value >> 5) & 0x3f; 883 s->state = 1; 884 } else { 885 if (s->command) 886 fprintf(stderr, "tsc210x_write: SPI overrun!\n"); 887 else 888 switch (s->page) { 889 case TSC_DATA_REGISTERS_PAGE: 890 tsc2102_data_register_write(s, s->offset, value); 891 break; 892 case TSC_CONTROL_REGISTERS_PAGE: 893 tsc2102_control_register_write(s, s->offset, value); 894 break; 895 case TSC_AUDIO_REGISTERS_PAGE: 896 tsc2102_audio_register_write(s, s->offset, value); 897 break; 898 default: 899 hw_error("tsc210x_write: wrong memory page\n"); 900 } 901 902 tsc210x_pin_update(s); 903 s->state = 0; 904 } 905 } 906 907 uint32_t tsc210x_txrx(void *opaque, uint32_t value, int len) 908 { 909 TSC210xState *s = opaque; 910 uint32_t ret = 0; 911 912 if (len != 16) 913 hw_error("%s: FIXME: bad SPI word width %i\n", __FUNCTION__, len); 914 915 /* TODO: sequential reads etc - how do we make sure the host doesn't 916 * unintentionally read out a conversion result from a register while 917 * transmitting the command word of the next command? */ 918 if (!value || (s->state && s->command)) 919 ret = tsc210x_read(s); 920 if (value || (s->state && !s->command)) 921 tsc210x_write(s, value); 922 923 return ret; 924 } 925 926 static void tsc210x_timer_tick(void *opaque) 927 { 928 TSC210xState *s = opaque; 929 930 /* Timer ticked -- a set of conversions has been finished. */ 931 932 if (!s->busy) 933 return; 934 935 s->busy = 0; 936 s->dav |= mode_regs[s->function]; 937 tsc210x_pin_update(s); 938 qemu_irq_lower(s->davint); 939 } 940 941 static void tsc210x_touchscreen_event(void *opaque, 942 int x, int y, int z, int buttons_state) 943 { 944 TSC210xState *s = opaque; 945 int p = s->pressure; 946 947 if (buttons_state) { 948 s->x = x; 949 s->y = y; 950 } 951 s->pressure = !!buttons_state; 952 953 /* 954 * Note: We would get better responsiveness in the guest by 955 * signaling TS events immediately, but for now we simulate 956 * the first conversion delay for sake of correctness. 957 */ 958 if (p != s->pressure) 959 tsc210x_pin_update(s); 960 } 961 962 static void tsc210x_i2s_swallow(TSC210xState *s) 963 { 964 if (s->dac_voice[0]) 965 tsc210x_out_flush(s, s->codec.out.len); 966 else 967 s->codec.out.len = 0; 968 } 969 970 static void tsc210x_i2s_set_rate(TSC210xState *s, int in, int out) 971 { 972 s->i2s_tx_rate = out; 973 s->i2s_rx_rate = in; 974 } 975 976 static void tsc210x_save(QEMUFile *f, void *opaque) 977 { 978 TSC210xState *s = (TSC210xState *) opaque; 979 int64_t now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); 980 int i; 981 982 qemu_put_be16(f, s->x); 983 qemu_put_be16(f, s->y); 984 qemu_put_byte(f, s->pressure); 985 986 qemu_put_byte(f, s->state); 987 qemu_put_byte(f, s->page); 988 qemu_put_byte(f, s->offset); 989 qemu_put_byte(f, s->command); 990 991 qemu_put_byte(f, s->irq); 992 qemu_put_be16s(f, &s->dav); 993 994 timer_put(f, s->timer); 995 qemu_put_byte(f, s->enabled); 996 qemu_put_byte(f, s->host_mode); 997 qemu_put_byte(f, s->function); 998 qemu_put_byte(f, s->nextfunction); 999 qemu_put_byte(f, s->precision); 1000 qemu_put_byte(f, s->nextprecision); 1001 qemu_put_byte(f, s->filter); 1002 qemu_put_byte(f, s->pin_func); 1003 qemu_put_byte(f, s->ref); 1004 qemu_put_byte(f, s->timing); 1005 qemu_put_be32(f, s->noise); 1006 1007 qemu_put_be16s(f, &s->audio_ctrl1); 1008 qemu_put_be16s(f, &s->audio_ctrl2); 1009 qemu_put_be16s(f, &s->audio_ctrl3); 1010 qemu_put_be16s(f, &s->pll[0]); 1011 qemu_put_be16s(f, &s->pll[1]); 1012 qemu_put_be16s(f, &s->volume); 1013 qemu_put_sbe64(f, (s->volume_change - now)); 1014 qemu_put_sbe64(f, (s->powerdown - now)); 1015 qemu_put_byte(f, s->softstep); 1016 qemu_put_be16s(f, &s->dac_power); 1017 1018 for (i = 0; i < 0x14; i ++) 1019 qemu_put_be16s(f, &s->filter_data[i]); 1020 } 1021 1022 static int tsc210x_load(QEMUFile *f, void *opaque, int version_id) 1023 { 1024 TSC210xState *s = (TSC210xState *) opaque; 1025 int64_t now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); 1026 int i; 1027 1028 s->x = qemu_get_be16(f); 1029 s->y = qemu_get_be16(f); 1030 s->pressure = qemu_get_byte(f); 1031 1032 s->state = qemu_get_byte(f); 1033 s->page = qemu_get_byte(f); 1034 s->offset = qemu_get_byte(f); 1035 s->command = qemu_get_byte(f); 1036 1037 s->irq = qemu_get_byte(f); 1038 qemu_get_be16s(f, &s->dav); 1039 1040 timer_get(f, s->timer); 1041 s->enabled = qemu_get_byte(f); 1042 s->host_mode = qemu_get_byte(f); 1043 s->function = qemu_get_byte(f); 1044 if (s->function < 0 || s->function >= ARRAY_SIZE(mode_regs)) { 1045 return -EINVAL; 1046 } 1047 s->nextfunction = qemu_get_byte(f); 1048 if (s->nextfunction < 0 || s->nextfunction >= ARRAY_SIZE(mode_regs)) { 1049 return -EINVAL; 1050 } 1051 s->precision = qemu_get_byte(f); 1052 if (s->precision < 0 || s->precision >= ARRAY_SIZE(resolution)) { 1053 return -EINVAL; 1054 } 1055 s->nextprecision = qemu_get_byte(f); 1056 if (s->nextprecision < 0 || s->nextprecision >= ARRAY_SIZE(resolution)) { 1057 return -EINVAL; 1058 } 1059 s->filter = qemu_get_byte(f); 1060 s->pin_func = qemu_get_byte(f); 1061 s->ref = qemu_get_byte(f); 1062 s->timing = qemu_get_byte(f); 1063 s->noise = qemu_get_be32(f); 1064 1065 qemu_get_be16s(f, &s->audio_ctrl1); 1066 qemu_get_be16s(f, &s->audio_ctrl2); 1067 qemu_get_be16s(f, &s->audio_ctrl3); 1068 qemu_get_be16s(f, &s->pll[0]); 1069 qemu_get_be16s(f, &s->pll[1]); 1070 qemu_get_be16s(f, &s->volume); 1071 s->volume_change = qemu_get_sbe64(f) + now; 1072 s->powerdown = qemu_get_sbe64(f) + now; 1073 s->softstep = qemu_get_byte(f); 1074 qemu_get_be16s(f, &s->dac_power); 1075 1076 for (i = 0; i < 0x14; i ++) 1077 qemu_get_be16s(f, &s->filter_data[i]); 1078 1079 s->busy = timer_pending(s->timer); 1080 qemu_set_irq(s->pint, !s->irq); 1081 qemu_set_irq(s->davint, !s->dav); 1082 1083 return 0; 1084 } 1085 1086 uWireSlave *tsc2102_init(qemu_irq pint) 1087 { 1088 TSC210xState *s; 1089 1090 s = g_new0(TSC210xState, 1); 1091 s->x = 160; 1092 s->y = 160; 1093 s->pressure = 0; 1094 s->precision = s->nextprecision = 0; 1095 s->timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, tsc210x_timer_tick, s); 1096 s->pint = pint; 1097 s->model = 0x2102; 1098 s->name = "tsc2102"; 1099 1100 s->tr[0] = 0; 1101 s->tr[1] = 1; 1102 s->tr[2] = 1; 1103 s->tr[3] = 0; 1104 s->tr[4] = 1; 1105 s->tr[5] = 0; 1106 s->tr[6] = 1; 1107 s->tr[7] = 0; 1108 1109 s->chip.opaque = s; 1110 s->chip.send = (void *) tsc210x_write; 1111 s->chip.receive = (void *) tsc210x_read; 1112 1113 s->codec.opaque = s; 1114 s->codec.tx_swallow = (void *) tsc210x_i2s_swallow; 1115 s->codec.set_rate = (void *) tsc210x_i2s_set_rate; 1116 s->codec.in.fifo = s->in_fifo; 1117 s->codec.out.fifo = s->out_fifo; 1118 1119 tsc210x_reset(s); 1120 1121 qemu_add_mouse_event_handler(tsc210x_touchscreen_event, s, 1, 1122 "QEMU TSC2102-driven Touchscreen"); 1123 1124 AUD_register_card(s->name, &s->card); 1125 1126 qemu_register_reset((void *) tsc210x_reset, s); 1127 register_savevm(NULL, s->name, -1, 0, 1128 tsc210x_save, tsc210x_load, s); 1129 1130 return &s->chip; 1131 } 1132 1133 uWireSlave *tsc2301_init(qemu_irq penirq, qemu_irq kbirq, qemu_irq dav) 1134 { 1135 TSC210xState *s; 1136 1137 s = g_new0(TSC210xState, 1); 1138 s->x = 400; 1139 s->y = 240; 1140 s->pressure = 0; 1141 s->precision = s->nextprecision = 0; 1142 s->timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, tsc210x_timer_tick, s); 1143 s->pint = penirq; 1144 s->kbint = kbirq; 1145 s->davint = dav; 1146 s->model = 0x2301; 1147 s->name = "tsc2301"; 1148 1149 s->tr[0] = 0; 1150 s->tr[1] = 1; 1151 s->tr[2] = 1; 1152 s->tr[3] = 0; 1153 s->tr[4] = 1; 1154 s->tr[5] = 0; 1155 s->tr[6] = 1; 1156 s->tr[7] = 0; 1157 1158 s->chip.opaque = s; 1159 s->chip.send = (void *) tsc210x_write; 1160 s->chip.receive = (void *) tsc210x_read; 1161 1162 s->codec.opaque = s; 1163 s->codec.tx_swallow = (void *) tsc210x_i2s_swallow; 1164 s->codec.set_rate = (void *) tsc210x_i2s_set_rate; 1165 s->codec.in.fifo = s->in_fifo; 1166 s->codec.out.fifo = s->out_fifo; 1167 1168 tsc210x_reset(s); 1169 1170 qemu_add_mouse_event_handler(tsc210x_touchscreen_event, s, 1, 1171 "QEMU TSC2301-driven Touchscreen"); 1172 1173 AUD_register_card(s->name, &s->card); 1174 1175 qemu_register_reset((void *) tsc210x_reset, s); 1176 register_savevm(NULL, s->name, -1, 0, tsc210x_save, tsc210x_load, s); 1177 1178 return &s->chip; 1179 } 1180 1181 I2SCodec *tsc210x_codec(uWireSlave *chip) 1182 { 1183 TSC210xState *s = (TSC210xState *) chip->opaque; 1184 1185 return &s->codec; 1186 } 1187 1188 /* 1189 * Use tslib generated calibration data to generate ADC input values 1190 * from the touchscreen. Assuming 12-bit precision was used during 1191 * tslib calibration. 1192 */ 1193 void tsc210x_set_transform(uWireSlave *chip, 1194 MouseTransformInfo *info) 1195 { 1196 TSC210xState *s = (TSC210xState *) chip->opaque; 1197 #if 0 1198 int64_t ltr[8]; 1199 1200 ltr[0] = (int64_t) info->a[1] * info->y; 1201 ltr[1] = (int64_t) info->a[4] * info->x; 1202 ltr[2] = (int64_t) info->a[1] * info->a[3] - 1203 (int64_t) info->a[4] * info->a[0]; 1204 ltr[3] = (int64_t) info->a[2] * info->a[4] - 1205 (int64_t) info->a[5] * info->a[1]; 1206 ltr[4] = (int64_t) info->a[0] * info->y; 1207 ltr[5] = (int64_t) info->a[3] * info->x; 1208 ltr[6] = (int64_t) info->a[4] * info->a[0] - 1209 (int64_t) info->a[1] * info->a[3]; 1210 ltr[7] = (int64_t) info->a[2] * info->a[3] - 1211 (int64_t) info->a[5] * info->a[0]; 1212 1213 /* Avoid integer overflow */ 1214 s->tr[0] = ltr[0] >> 11; 1215 s->tr[1] = ltr[1] >> 11; 1216 s->tr[2] = muldiv64(ltr[2], 1, info->a[6]); 1217 s->tr[3] = muldiv64(ltr[3], 1 << 4, ltr[2]); 1218 s->tr[4] = ltr[4] >> 11; 1219 s->tr[5] = ltr[5] >> 11; 1220 s->tr[6] = muldiv64(ltr[6], 1, info->a[6]); 1221 s->tr[7] = muldiv64(ltr[7], 1 << 4, ltr[6]); 1222 #else 1223 1224 /* This version assumes touchscreen X & Y axis are parallel or 1225 * perpendicular to LCD's X & Y axis in some way. */ 1226 if (abs(info->a[0]) > abs(info->a[1])) { 1227 s->tr[0] = 0; 1228 s->tr[1] = -info->a[6] * info->x; 1229 s->tr[2] = info->a[0]; 1230 s->tr[3] = -info->a[2] / info->a[0]; 1231 s->tr[4] = info->a[6] * info->y; 1232 s->tr[5] = 0; 1233 s->tr[6] = info->a[4]; 1234 s->tr[7] = -info->a[5] / info->a[4]; 1235 } else { 1236 s->tr[0] = info->a[6] * info->y; 1237 s->tr[1] = 0; 1238 s->tr[2] = info->a[1]; 1239 s->tr[3] = -info->a[2] / info->a[1]; 1240 s->tr[4] = 0; 1241 s->tr[5] = -info->a[6] * info->x; 1242 s->tr[6] = info->a[3]; 1243 s->tr[7] = -info->a[5] / info->a[3]; 1244 } 1245 1246 s->tr[0] >>= 11; 1247 s->tr[1] >>= 11; 1248 s->tr[3] <<= 4; 1249 s->tr[4] >>= 11; 1250 s->tr[5] >>= 11; 1251 s->tr[7] <<= 4; 1252 #endif 1253 } 1254 1255 void tsc210x_key_event(uWireSlave *chip, int key, int down) 1256 { 1257 TSC210xState *s = (TSC210xState *) chip->opaque; 1258 1259 if (down) 1260 s->kb.down |= 1 << key; 1261 else 1262 s->kb.down &= ~(1 << key); 1263 1264 if (down && (s->kb.down & ~s->kb.mask) && !s->kb.intr) { 1265 s->kb.intr = 1; 1266 qemu_irq_lower(s->kbint); 1267 } else if (s->kb.intr && !(s->kb.down & ~s->kb.mask) && 1268 !(s->kb.mode & 1)) { 1269 s->kb.intr = 0; 1270 qemu_irq_raise(s->kbint); 1271 } 1272 } 1273