balrog | 069de56 | 2008-05-07 14:41:37 +0000 | [diff] [blame] | 1 | /* |
| 2 | * TI TSC2005 emulator. |
| 3 | * |
| 4 | * Copyright (c) 2006 Andrzej Zaborowski <balrog@zabor.org> |
| 5 | * Copyright (C) 2008 Nokia Corporation |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU General Public License as |
| 9 | * published by the Free Software Foundation; either version 2 or |
| 10 | * (at your option) version 3 of the License. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
| 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 20 | * MA 02111-1307 USA |
| 21 | */ |
| 22 | |
| 23 | #include "hw.h" |
| 24 | #include "qemu-timer.h" |
| 25 | #include "console.h" |
balrog | 069de56 | 2008-05-07 14:41:37 +0000 | [diff] [blame] | 26 | |
| 27 | #define TSC_CUT_RESOLUTION(value, p) ((value) >> (16 - (p ? 12 : 10))) |
| 28 | |
| 29 | struct tsc2005_state_s { |
| 30 | qemu_irq pint; /* Combination of the nPENIRQ and DAV signals */ |
| 31 | QEMUTimer *timer; |
| 32 | uint16_t model; |
| 33 | |
| 34 | int x, y; |
| 35 | int pressure; |
| 36 | |
| 37 | int state, reg, irq, command; |
| 38 | uint16_t data, dav; |
| 39 | |
| 40 | int busy; |
| 41 | int enabled; |
| 42 | int host_mode; |
| 43 | int function; |
| 44 | int nextfunction; |
| 45 | int precision; |
| 46 | int nextprecision; |
| 47 | int filter; |
| 48 | int pin_func; |
| 49 | int timing[2]; |
| 50 | int noise; |
| 51 | int reset; |
| 52 | int pdst; |
| 53 | int pnd0; |
| 54 | uint16_t temp_thr[2]; |
| 55 | uint16_t aux_thr[2]; |
| 56 | |
| 57 | int tr[8]; |
| 58 | }; |
| 59 | |
| 60 | enum { |
| 61 | TSC_MODE_XYZ_SCAN = 0x0, |
| 62 | TSC_MODE_XY_SCAN, |
| 63 | TSC_MODE_X, |
| 64 | TSC_MODE_Y, |
| 65 | TSC_MODE_Z, |
| 66 | TSC_MODE_AUX, |
| 67 | TSC_MODE_TEMP1, |
| 68 | TSC_MODE_TEMP2, |
| 69 | TSC_MODE_AUX_SCAN, |
| 70 | TSC_MODE_X_TEST, |
| 71 | TSC_MODE_Y_TEST, |
| 72 | TSC_MODE_TS_TEST, |
| 73 | TSC_MODE_RESERVED, |
| 74 | TSC_MODE_XX_DRV, |
| 75 | TSC_MODE_YY_DRV, |
| 76 | TSC_MODE_YX_DRV, |
| 77 | }; |
| 78 | |
| 79 | static const uint16_t mode_regs[16] = { |
| 80 | 0xf000, /* X, Y, Z scan */ |
| 81 | 0xc000, /* X, Y scan */ |
| 82 | 0x8000, /* X */ |
| 83 | 0x4000, /* Y */ |
| 84 | 0x3000, /* Z */ |
| 85 | 0x0800, /* AUX */ |
| 86 | 0x0400, /* TEMP1 */ |
| 87 | 0x0200, /* TEMP2 */ |
| 88 | 0x0800, /* AUX scan */ |
| 89 | 0x0040, /* X test */ |
| 90 | 0x0020, /* Y test */ |
| 91 | 0x0080, /* Short-circuit test */ |
| 92 | 0x0000, /* Reserved */ |
| 93 | 0x0000, /* X+, X- drivers */ |
| 94 | 0x0000, /* Y+, Y- drivers */ |
| 95 | 0x0000, /* Y+, X- drivers */ |
| 96 | }; |
| 97 | |
| 98 | #define X_TRANSFORM(s) \ |
| 99 | ((s->y * s->tr[0] - s->x * s->tr[1]) / s->tr[2] + s->tr[3]) |
| 100 | #define Y_TRANSFORM(s) \ |
| 101 | ((s->y * s->tr[4] - s->x * s->tr[5]) / s->tr[6] + s->tr[7]) |
| 102 | #define Z1_TRANSFORM(s) \ |
| 103 | ((400 - ((s)->x >> 7) + ((s)->pressure << 10)) << 4) |
| 104 | #define Z2_TRANSFORM(s) \ |
| 105 | ((4000 + ((s)->y >> 7) - ((s)->pressure << 10)) << 4) |
| 106 | |
| 107 | #define AUX_VAL (700 << 4) /* +/- 3 at 12-bit */ |
| 108 | #define TEMP1_VAL (1264 << 4) /* +/- 5 at 12-bit */ |
| 109 | #define TEMP2_VAL (1531 << 4) /* +/- 5 at 12-bit */ |
| 110 | |
balrog | 069de56 | 2008-05-07 14:41:37 +0000 | [diff] [blame] | 111 | static uint16_t tsc2005_read(struct tsc2005_state_s *s, int reg) |
| 112 | { |
| 113 | uint16_t ret; |
| 114 | |
| 115 | switch (reg) { |
| 116 | case 0x0: /* X */ |
| 117 | s->dav &= ~mode_regs[TSC_MODE_X]; |
| 118 | return TSC_CUT_RESOLUTION(X_TRANSFORM(s), s->precision) + |
| 119 | (s->noise & 3); |
| 120 | case 0x1: /* Y */ |
| 121 | s->dav &= ~mode_regs[TSC_MODE_Y]; |
| 122 | s->noise ++; |
| 123 | return TSC_CUT_RESOLUTION(Y_TRANSFORM(s), s->precision) ^ |
| 124 | (s->noise & 3); |
| 125 | case 0x2: /* Z1 */ |
| 126 | s->dav &= 0xdfff; |
| 127 | return TSC_CUT_RESOLUTION(Z1_TRANSFORM(s), s->precision) - |
| 128 | (s->noise & 3); |
| 129 | case 0x3: /* Z2 */ |
| 130 | s->dav &= 0xefff; |
| 131 | return TSC_CUT_RESOLUTION(Z2_TRANSFORM(s), s->precision) | |
| 132 | (s->noise & 3); |
| 133 | |
| 134 | case 0x4: /* AUX */ |
| 135 | s->dav &= ~mode_regs[TSC_MODE_AUX]; |
| 136 | return TSC_CUT_RESOLUTION(AUX_VAL, s->precision); |
| 137 | |
| 138 | case 0x5: /* TEMP1 */ |
| 139 | s->dav &= ~mode_regs[TSC_MODE_TEMP1]; |
| 140 | return TSC_CUT_RESOLUTION(TEMP1_VAL, s->precision) - |
| 141 | (s->noise & 5); |
| 142 | case 0x6: /* TEMP2 */ |
| 143 | s->dav &= 0xdfff; |
| 144 | s->dav &= ~mode_regs[TSC_MODE_TEMP2]; |
| 145 | return TSC_CUT_RESOLUTION(TEMP2_VAL, s->precision) ^ |
| 146 | (s->noise & 3); |
| 147 | |
| 148 | case 0x7: /* Status */ |
| 149 | ret = s->dav | (s->reset << 7) | (s->pdst << 2) | 0x0; |
| 150 | s->dav &= ~(mode_regs[TSC_MODE_X_TEST] | mode_regs[TSC_MODE_Y_TEST] | |
| 151 | mode_regs[TSC_MODE_TS_TEST]); |
| 152 | s->reset = 1; |
| 153 | return ret; |
| 154 | |
| 155 | case 0x8: /* AUX high treshold */ |
| 156 | return s->aux_thr[1]; |
| 157 | case 0x9: /* AUX low treshold */ |
| 158 | return s->aux_thr[0]; |
| 159 | |
| 160 | case 0xa: /* TEMP high treshold */ |
| 161 | return s->temp_thr[1]; |
| 162 | case 0xb: /* TEMP low treshold */ |
| 163 | return s->temp_thr[0]; |
| 164 | |
| 165 | case 0xc: /* CFR0 */ |
| 166 | return (s->pressure << 15) | ((!s->busy) << 14) | |
| 167 | (s->nextprecision << 13) | s->timing[0]; |
| 168 | case 0xd: /* CFR1 */ |
| 169 | return s->timing[1]; |
| 170 | case 0xe: /* CFR2 */ |
| 171 | return (s->pin_func << 14) | s->filter; |
| 172 | |
| 173 | case 0xf: /* Function select status */ |
| 174 | return s->function >= 0 ? 1 << s->function : 0; |
| 175 | } |
| 176 | |
| 177 | /* Never gets here */ |
| 178 | return 0xffff; |
| 179 | } |
| 180 | |
| 181 | static void tsc2005_write(struct tsc2005_state_s *s, int reg, uint16_t data) |
| 182 | { |
| 183 | switch (reg) { |
| 184 | case 0x8: /* AUX high treshold */ |
| 185 | s->aux_thr[1] = data; |
| 186 | break; |
| 187 | case 0x9: /* AUX low treshold */ |
| 188 | s->aux_thr[0] = data; |
| 189 | break; |
| 190 | |
| 191 | case 0xa: /* TEMP high treshold */ |
| 192 | s->temp_thr[1] = data; |
| 193 | break; |
| 194 | case 0xb: /* TEMP low treshold */ |
| 195 | s->temp_thr[0] = data; |
| 196 | break; |
| 197 | |
| 198 | case 0xc: /* CFR0 */ |
| 199 | s->host_mode = data >> 15; |
balrog | 0941041 | 2008-05-18 13:14:29 +0000 | [diff] [blame] | 200 | if (s->enabled != !(data & 0x4000)) { |
| 201 | s->enabled = !(data & 0x4000); |
| 202 | fprintf(stderr, "%s: touchscreen sense %sabled\n", |
| 203 | __FUNCTION__, s->enabled ? "en" : "dis"); |
| 204 | if (s->busy && !s->enabled) |
| 205 | qemu_del_timer(s->timer); |
| 206 | s->busy &= s->enabled; |
| 207 | } |
balrog | 069de56 | 2008-05-07 14:41:37 +0000 | [diff] [blame] | 208 | s->nextprecision = (data >> 13) & 1; |
| 209 | s->timing[0] = data & 0x1fff; |
| 210 | if ((s->timing[0] >> 11) == 3) |
| 211 | fprintf(stderr, "%s: illegal conversion clock setting\n", |
| 212 | __FUNCTION__); |
| 213 | break; |
| 214 | case 0xd: /* CFR1 */ |
| 215 | s->timing[1] = data & 0xf07; |
| 216 | break; |
| 217 | case 0xe: /* CFR2 */ |
| 218 | s->pin_func = (data >> 14) & 3; |
| 219 | s->filter = data & 0x3fff; |
| 220 | break; |
| 221 | |
| 222 | default: |
| 223 | fprintf(stderr, "%s: write into read-only register %x\n", |
| 224 | __FUNCTION__, reg); |
| 225 | } |
| 226 | } |
| 227 | |
| 228 | /* This handles most of the chip's logic. */ |
| 229 | static void tsc2005_pin_update(struct tsc2005_state_s *s) |
| 230 | { |
| 231 | int64_t expires; |
| 232 | int pin_state; |
| 233 | |
| 234 | switch (s->pin_func) { |
| 235 | case 0: |
| 236 | pin_state = !s->pressure && !!s->dav; |
| 237 | break; |
| 238 | case 1: |
| 239 | case 3: |
| 240 | default: |
| 241 | pin_state = !s->dav; |
| 242 | break; |
| 243 | case 2: |
| 244 | pin_state = !s->pressure; |
| 245 | } |
| 246 | |
balrog | 069de56 | 2008-05-07 14:41:37 +0000 | [diff] [blame] | 247 | if (pin_state != s->irq) { |
| 248 | s->irq = pin_state; |
| 249 | qemu_set_irq(s->pint, s->irq); |
| 250 | } |
| 251 | |
| 252 | switch (s->nextfunction) { |
| 253 | case TSC_MODE_XYZ_SCAN: |
| 254 | case TSC_MODE_XY_SCAN: |
balrog | e62ab7a | 2008-05-09 22:17:18 +0000 | [diff] [blame] | 255 | if (!s->host_mode && s->dav) |
| 256 | s->enabled = 0; |
balrog | 069de56 | 2008-05-07 14:41:37 +0000 | [diff] [blame] | 257 | if (!s->pressure) |
| 258 | return; |
| 259 | /* Fall through */ |
| 260 | case TSC_MODE_AUX_SCAN: |
| 261 | break; |
| 262 | |
| 263 | case TSC_MODE_X: |
| 264 | case TSC_MODE_Y: |
| 265 | case TSC_MODE_Z: |
| 266 | if (!s->pressure) |
| 267 | return; |
| 268 | /* Fall through */ |
| 269 | case TSC_MODE_AUX: |
| 270 | case TSC_MODE_TEMP1: |
| 271 | case TSC_MODE_TEMP2: |
| 272 | case TSC_MODE_X_TEST: |
| 273 | case TSC_MODE_Y_TEST: |
| 274 | case TSC_MODE_TS_TEST: |
| 275 | if (s->dav) |
| 276 | s->enabled = 0; |
| 277 | break; |
| 278 | |
| 279 | case TSC_MODE_RESERVED: |
| 280 | case TSC_MODE_XX_DRV: |
| 281 | case TSC_MODE_YY_DRV: |
| 282 | case TSC_MODE_YX_DRV: |
| 283 | default: |
| 284 | return; |
| 285 | } |
| 286 | |
| 287 | if (!s->enabled || s->busy) |
| 288 | return; |
| 289 | |
| 290 | s->busy = 1; |
| 291 | s->precision = s->nextprecision; |
| 292 | s->function = s->nextfunction; |
| 293 | s->pdst = !s->pnd0; /* Synchronised on internal clock */ |
| 294 | expires = qemu_get_clock(vm_clock) + (ticks_per_sec >> 7); |
| 295 | qemu_mod_timer(s->timer, expires); |
| 296 | } |
| 297 | |
| 298 | static void tsc2005_reset(struct tsc2005_state_s *s) |
| 299 | { |
| 300 | s->state = 0; |
| 301 | s->pin_func = 0; |
| 302 | s->enabled = 0; |
| 303 | s->busy = 0; |
| 304 | s->nextprecision = 0; |
| 305 | s->nextfunction = 0; |
| 306 | s->timing[0] = 0; |
| 307 | s->timing[1] = 0; |
| 308 | s->irq = 0; |
| 309 | s->dav = 0; |
| 310 | s->reset = 0; |
| 311 | s->pdst = 1; |
| 312 | s->pnd0 = 0; |
| 313 | s->function = -1; |
| 314 | s->temp_thr[0] = 0x000; |
| 315 | s->temp_thr[1] = 0xfff; |
| 316 | s->aux_thr[0] = 0x000; |
| 317 | s->aux_thr[1] = 0xfff; |
| 318 | |
| 319 | tsc2005_pin_update(s); |
| 320 | } |
| 321 | |
| 322 | uint8_t tsc2005_txrx_word(void *opaque, uint8_t value) |
| 323 | { |
| 324 | struct tsc2005_state_s *s = opaque; |
| 325 | uint32_t ret = 0; |
| 326 | |
| 327 | switch (s->state ++) { |
| 328 | case 0: |
| 329 | if (value & 0x80) { |
| 330 | /* Command */ |
| 331 | if (value & (1 << 1)) |
| 332 | tsc2005_reset(s); |
| 333 | else { |
| 334 | s->nextfunction = (value >> 3) & 0xf; |
| 335 | s->nextprecision = (value >> 2) & 1; |
| 336 | if (s->enabled != !(value & 1)) { |
| 337 | s->enabled = !(value & 1); |
| 338 | fprintf(stderr, "%s: touchscreen sense %sabled\n", |
| 339 | __FUNCTION__, s->enabled ? "en" : "dis"); |
balrog | e62ab7a | 2008-05-09 22:17:18 +0000 | [diff] [blame] | 340 | if (s->busy && !s->enabled) |
| 341 | qemu_del_timer(s->timer); |
| 342 | s->busy &= s->enabled; |
balrog | 069de56 | 2008-05-07 14:41:37 +0000 | [diff] [blame] | 343 | } |
| 344 | tsc2005_pin_update(s); |
| 345 | } |
| 346 | |
| 347 | s->state = 0; |
| 348 | } else if (value) { |
| 349 | /* Data transfer */ |
| 350 | s->reg = (value >> 3) & 0xf; |
| 351 | s->pnd0 = (value >> 1) & 1; |
| 352 | s->command = value & 1; |
| 353 | |
| 354 | if (s->command) { |
| 355 | /* Read */ |
| 356 | s->data = tsc2005_read(s, s->reg); |
| 357 | tsc2005_pin_update(s); |
| 358 | } else |
| 359 | s->data = 0; |
| 360 | } else |
| 361 | s->state = 0; |
| 362 | break; |
| 363 | |
| 364 | case 1: |
| 365 | if (s->command) |
| 366 | ret = (s->data >> 8) & 0xff; |
| 367 | else |
| 368 | s->data |= value << 8; |
| 369 | break; |
| 370 | |
| 371 | case 2: |
| 372 | if (s->command) |
| 373 | ret = s->data & 0xff; |
| 374 | else { |
| 375 | s->data |= value; |
| 376 | tsc2005_write(s, s->reg, s->data); |
| 377 | tsc2005_pin_update(s); |
| 378 | } |
| 379 | |
| 380 | s->state = 0; |
| 381 | break; |
| 382 | } |
| 383 | |
| 384 | return ret; |
| 385 | } |
| 386 | |
| 387 | uint32_t tsc2005_txrx(void *opaque, uint32_t value, int len) |
| 388 | { |
| 389 | uint32_t ret = 0; |
| 390 | |
| 391 | len &= ~7; |
| 392 | while (len > 0) { |
| 393 | len -= 8; |
| 394 | ret |= tsc2005_txrx_word(opaque, (value >> len) & 0xff) << len; |
| 395 | } |
| 396 | |
| 397 | return ret; |
| 398 | } |
| 399 | |
| 400 | static void tsc2005_timer_tick(void *opaque) |
| 401 | { |
| 402 | struct tsc2005_state_s *s = opaque; |
| 403 | |
| 404 | /* Timer ticked -- a set of conversions has been finished. */ |
| 405 | |
| 406 | if (!s->busy) |
| 407 | return; |
| 408 | |
| 409 | s->busy = 0; |
| 410 | s->dav |= mode_regs[s->function]; |
| 411 | s->function = -1; |
| 412 | tsc2005_pin_update(s); |
| 413 | } |
| 414 | |
| 415 | static void tsc2005_touchscreen_event(void *opaque, |
| 416 | int x, int y, int z, int buttons_state) |
| 417 | { |
| 418 | struct tsc2005_state_s *s = opaque; |
| 419 | int p = s->pressure; |
| 420 | |
| 421 | if (buttons_state) { |
| 422 | s->x = x; |
| 423 | s->y = y; |
| 424 | } |
| 425 | s->pressure = !!buttons_state; |
| 426 | |
| 427 | /* |
| 428 | * Note: We would get better responsiveness in the guest by |
| 429 | * signaling TS events immediately, but for now we simulate |
| 430 | * the first conversion delay for sake of correctness. |
| 431 | */ |
| 432 | if (p != s->pressure) |
| 433 | tsc2005_pin_update(s); |
| 434 | } |
| 435 | |
| 436 | static void tsc2005_save(QEMUFile *f, void *opaque) |
| 437 | { |
| 438 | struct tsc2005_state_s *s = (struct tsc2005_state_s *) opaque; |
| 439 | int i; |
| 440 | |
| 441 | qemu_put_be16(f, s->x); |
| 442 | qemu_put_be16(f, s->y); |
| 443 | qemu_put_byte(f, s->pressure); |
| 444 | |
| 445 | qemu_put_byte(f, s->state); |
| 446 | qemu_put_byte(f, s->reg); |
| 447 | qemu_put_byte(f, s->command); |
| 448 | |
| 449 | qemu_put_byte(f, s->irq); |
| 450 | qemu_put_be16s(f, &s->dav); |
| 451 | qemu_put_be16s(f, &s->data); |
| 452 | |
| 453 | qemu_put_timer(f, s->timer); |
| 454 | qemu_put_byte(f, s->enabled); |
| 455 | qemu_put_byte(f, s->host_mode); |
| 456 | qemu_put_byte(f, s->function); |
| 457 | qemu_put_byte(f, s->nextfunction); |
| 458 | qemu_put_byte(f, s->precision); |
| 459 | qemu_put_byte(f, s->nextprecision); |
| 460 | qemu_put_be16(f, s->filter); |
| 461 | qemu_put_byte(f, s->pin_func); |
| 462 | qemu_put_be16(f, s->timing[0]); |
| 463 | qemu_put_be16(f, s->timing[1]); |
| 464 | qemu_put_be16s(f, &s->temp_thr[0]); |
| 465 | qemu_put_be16s(f, &s->temp_thr[1]); |
| 466 | qemu_put_be16s(f, &s->aux_thr[0]); |
| 467 | qemu_put_be16s(f, &s->aux_thr[1]); |
| 468 | qemu_put_be32(f, s->noise); |
| 469 | qemu_put_byte(f, s->reset); |
| 470 | qemu_put_byte(f, s->pdst); |
| 471 | qemu_put_byte(f, s->pnd0); |
| 472 | |
| 473 | for (i = 0; i < 8; i ++) |
| 474 | qemu_put_be32(f, s->tr[i]); |
| 475 | } |
| 476 | |
| 477 | static int tsc2005_load(QEMUFile *f, void *opaque, int version_id) |
| 478 | { |
| 479 | struct tsc2005_state_s *s = (struct tsc2005_state_s *) opaque; |
| 480 | int i; |
| 481 | |
| 482 | s->x = qemu_get_be16(f); |
| 483 | s->y = qemu_get_be16(f); |
| 484 | s->pressure = qemu_get_byte(f); |
| 485 | |
| 486 | s->state = qemu_get_byte(f); |
| 487 | s->reg = qemu_get_byte(f); |
| 488 | s->command = qemu_get_byte(f); |
| 489 | |
| 490 | s->irq = qemu_get_byte(f); |
| 491 | qemu_get_be16s(f, &s->dav); |
| 492 | qemu_get_be16s(f, &s->data); |
| 493 | |
| 494 | qemu_get_timer(f, s->timer); |
| 495 | s->enabled = qemu_get_byte(f); |
| 496 | s->host_mode = qemu_get_byte(f); |
| 497 | s->function = qemu_get_byte(f); |
| 498 | s->nextfunction = qemu_get_byte(f); |
| 499 | s->precision = qemu_get_byte(f); |
| 500 | s->nextprecision = qemu_get_byte(f); |
| 501 | s->filter = qemu_get_be16(f); |
| 502 | s->pin_func = qemu_get_byte(f); |
| 503 | s->timing[0] = qemu_get_be16(f); |
| 504 | s->timing[1] = qemu_get_be16(f); |
| 505 | qemu_get_be16s(f, &s->temp_thr[0]); |
| 506 | qemu_get_be16s(f, &s->temp_thr[1]); |
| 507 | qemu_get_be16s(f, &s->aux_thr[0]); |
| 508 | qemu_get_be16s(f, &s->aux_thr[1]); |
| 509 | s->noise = qemu_get_be32(f); |
| 510 | s->reset = qemu_get_byte(f); |
| 511 | s->pdst = qemu_get_byte(f); |
| 512 | s->pnd0 = qemu_get_byte(f); |
| 513 | |
| 514 | for (i = 0; i < 8; i ++) |
| 515 | s->tr[i] = qemu_get_be32(f); |
| 516 | |
| 517 | s->busy = qemu_timer_pending(s->timer); |
| 518 | tsc2005_pin_update(s); |
| 519 | |
| 520 | return 0; |
| 521 | } |
| 522 | |
balrog | 069de56 | 2008-05-07 14:41:37 +0000 | [diff] [blame] | 523 | void *tsc2005_init(qemu_irq pintdav) |
| 524 | { |
| 525 | struct tsc2005_state_s *s; |
| 526 | |
| 527 | s = (struct tsc2005_state_s *) |
| 528 | qemu_mallocz(sizeof(struct tsc2005_state_s)); |
| 529 | s->x = 400; |
| 530 | s->y = 240; |
| 531 | s->pressure = 0; |
| 532 | s->precision = s->nextprecision = 0; |
| 533 | s->timer = qemu_new_timer(vm_clock, tsc2005_timer_tick, s); |
| 534 | s->pint = pintdav; |
| 535 | s->model = 0x2005; |
| 536 | |
| 537 | s->tr[0] = 0; |
| 538 | s->tr[1] = 1; |
| 539 | s->tr[2] = 1; |
| 540 | s->tr[3] = 0; |
| 541 | s->tr[4] = 1; |
| 542 | s->tr[5] = 0; |
| 543 | s->tr[6] = 1; |
| 544 | s->tr[7] = 0; |
| 545 | |
| 546 | tsc2005_reset(s); |
| 547 | |
| 548 | qemu_add_mouse_event_handler(tsc2005_touchscreen_event, s, 1, |
| 549 | "QEMU TSC2005-driven Touchscreen"); |
| 550 | |
| 551 | qemu_register_reset((void *) tsc2005_reset, s); |
pbrook | 18be518 | 2008-07-01 21:31:54 +0000 | [diff] [blame] | 552 | register_savevm("tsc2005", -1, 0, tsc2005_save, tsc2005_load, s); |
balrog | 069de56 | 2008-05-07 14:41:37 +0000 | [diff] [blame] | 553 | |
| 554 | return s; |
| 555 | } |
| 556 | |
| 557 | /* |
| 558 | * Use tslib generated calibration data to generate ADC input values |
| 559 | * from the touchscreen. Assuming 12-bit precision was used during |
| 560 | * tslib calibration. |
| 561 | */ |
| 562 | void tsc2005_set_transform(void *opaque, struct mouse_transform_info_s *info) |
| 563 | { |
| 564 | struct tsc2005_state_s *s = (struct tsc2005_state_s *) opaque; |
| 565 | |
| 566 | /* This version assumes touchscreen X & Y axis are parallel or |
| 567 | * perpendicular to LCD's X & Y axis in some way. */ |
| 568 | if (abs(info->a[0]) > abs(info->a[1])) { |
| 569 | s->tr[0] = 0; |
| 570 | s->tr[1] = -info->a[6] * info->x; |
| 571 | s->tr[2] = info->a[0]; |
| 572 | s->tr[3] = -info->a[2] / info->a[0]; |
| 573 | s->tr[4] = info->a[6] * info->y; |
| 574 | s->tr[5] = 0; |
| 575 | s->tr[6] = info->a[4]; |
| 576 | s->tr[7] = -info->a[5] / info->a[4]; |
| 577 | } else { |
| 578 | s->tr[0] = info->a[6] * info->y; |
| 579 | s->tr[1] = 0; |
| 580 | s->tr[2] = info->a[1]; |
| 581 | s->tr[3] = -info->a[2] / info->a[1]; |
| 582 | s->tr[4] = 0; |
| 583 | s->tr[5] = -info->a[6] * info->x; |
| 584 | s->tr[6] = info->a[3]; |
| 585 | s->tr[7] = -info->a[5] / info->a[3]; |
| 586 | } |
| 587 | |
| 588 | s->tr[0] >>= 11; |
| 589 | s->tr[1] >>= 11; |
| 590 | s->tr[3] <<= 4; |
| 591 | s->tr[4] >>= 11; |
| 592 | s->tr[5] >>= 11; |
| 593 | s->tr[7] <<= 4; |
| 594 | } |