hw/tsc210x.c

   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, write to the Free Software Foundation, Inc.,
  20  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  21  */
  22
  23 #include "hw.h"
  24 #include "audio/audio.h"
  25 #include "qemu-timer.h"
  26 #include "console.h"
  27 #include "omap.h"       /* For I2SCodec and uWireSlave */
  28 #include "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 tsc2101_rates[] = {
 221     /* Fsref / 6.0 */
 222     { 7350,     7,      1 },
 223     { 8000,     7,      0 },
 224     /* Fsref / 5.5 */
 225     { 8018,     6,      1 },
 226     { 8727,     6,      0 },
 227     /* Fsref / 5.0 */
 228     { 8820,     5,      1 },
 229     { 9600,     5,      0 },
 230     /* Fsref / 4.0 */
 231     { 11025,    4,      1 },
 232     { 12000,    4,      0 },
 233     /* Fsref / 3.0 */
 234     { 14700,    3,      1 },
 235     { 16000,    3,      0 },
 236     /* Fsref / 2.0 */
 237     { 22050,    2,      1 },
 238     { 24000,    2,      0 },
 239     /* Fsref / 1.5 */
 240     { 29400,    1,      1 },
 241     { 32000,    1,      0 },
 242     /* Fsref */
 243     { 44100,    0,      1 },
 244     { 48000,    0,      0 },
 245
 246     { 0,        0,      0 },
 247 };
 248
 249 /*  { rate,   dsor, fsref }     */
 250 static const TSC210xRateInfo tsc2102_rates[] = {
 251     /* Fsref / 6.0 */
 252     { 7350,     63,     1 },
 253     { 8000,     63,     0 },
 254     /* Fsref / 6.0 */
 255     { 7350,     54,     1 },
 256     { 8000,     54,     0 },
 257     /* Fsref / 5.0 */
 258     { 8820,     45,     1 },
 259     { 9600,     45,     0 },
 260     /* Fsref / 4.0 */
 261     { 11025,    36,     1 },
 262     { 12000,    36,     0 },
 263     /* Fsref / 3.0 */
 264     { 14700,    27,     1 },
 265     { 16000,    27,     0 },
 266     /* Fsref / 2.0 */
 267     { 22050,    18,     1 },
 268     { 24000,    18,     0 },
 269     /* Fsref / 1.5 */
 270     { 29400,    9,      1 },
 271     { 32000,    9,      0 },
 272     /* Fsref */
 273     { 44100,    0,      1 },
 274     { 48000,    0,      0 },
 275
 276     { 0,        0,      0 },
 277 };
 278
 279 static inline void tsc210x_out_flush(TSC210xState *s, int len)
 280 {
 281     uint8_t *data = s->codec.out.fifo + s->codec.out.start;
 282     uint8_t *end = data + len;
 283
 284     while (data < end)
 285         data += AUD_write(s->dac_voice[0], data, end - data) ?: (end - data);
 286
 287     s->codec.out.len -= len;
 288     if (s->codec.out.len)
 289         memmove(s->codec.out.fifo, end, s->codec.out.len);
 290     s->codec.out.start = 0;
 291 }
 292
 293 static void tsc210x_audio_out_cb(TSC210xState *s, int free_b)
 294 {
 295     if (s->codec.out.len >= free_b) {
 296         tsc210x_out_flush(s, free_b);
 297         return;
 298     }
 299
 300     s->codec.out.size = MIN(free_b, 16384);
 301     qemu_irq_raise(s->codec.tx_start);
 302 }
 303
 304 static void tsc2102_audio_rate_update(TSC210xState *s)
 305 {
 306     const TSC210xRateInfo *rate;
 307
 308     s->codec.tx_rate = 0;
 309     s->codec.rx_rate = 0;
 310     if (s->dac_power & (1 << 15))                               /* PWDNC */
 311         return;
 312
 313     for (rate = tsc2102_rates; rate->rate; rate ++)
 314         if (rate->dsor == (s->audio_ctrl1 & 0x3f) &&            /* DACFS */
 315                         rate->fsref == ((s->audio_ctrl3 >> 13) & 1))/* REFFS */
 316             break;
 317     if (!rate->rate) {
 318         printf("%s: unknown sampling rate configured\n", __FUNCTION__);
 319         return;
 320     }
 321
 322     s->codec.tx_rate = rate->rate;
 323 }
 324
 325 static void tsc2102_audio_output_update(TSC210xState *s)
 326 {
 327     int enable;
 328     struct audsettings fmt;
 329
 330     if (s->dac_voice[0]) {
 331         tsc210x_out_flush(s, s->codec.out.len);
 332         s->codec.out.size = 0;
 333         AUD_set_active_out(s->dac_voice[0], 0);
 334         AUD_close_out(&s->card, s->dac_voice[0]);
 335         s->dac_voice[0] = 0;
 336     }
 337     s->codec.cts = 0;
 338
 339     enable =
 340             (~s->dac_power & (1 << 15)) &&                      /* PWDNC */
 341             (~s->dac_power & (1 << 10));                        /* DAPWDN */
 342     if (!enable || !s->codec.tx_rate)
 343         return;
 344
 345     /* Force our own sampling rate even in slave DAC mode */
 346     fmt.endianness = 0;
 347     fmt.nchannels = 2;
 348     fmt.freq = s->codec.tx_rate;
 349     fmt.fmt = AUD_FMT_S16;
 350
 351     s->dac_voice[0] = AUD_open_out(&s->card, s->dac_voice[0],
 352                     "tsc2102.sink", s, (void *) tsc210x_audio_out_cb, &fmt);
 353     if (s->dac_voice[0]) {
 354         s->codec.cts = 1;
 355         AUD_set_active_out(s->dac_voice[0], 1);
 356     }
 357 }
 358
 359 static uint16_t tsc2102_data_register_read(TSC210xState *s, int reg)
 360 {
 361     switch (reg) {
 362     case 0x00:  /* X */
 363         s->dav &= 0xfbff;
 364         return TSC_CUT_RESOLUTION(X_TRANSFORM(s), s->precision) +
 365                 (s->noise & 3);
 366
 367     case 0x01:  /* Y */
 368         s->noise ++;
 369         s->dav &= 0xfdff;
 370         return TSC_CUT_RESOLUTION(Y_TRANSFORM(s), s->precision) ^
 371                 (s->noise & 3);
 372
 373     case 0x02:  /* Z1 */
 374         s->dav &= 0xfeff;
 375         return TSC_CUT_RESOLUTION(Z1_TRANSFORM(s), s->precision) -
 376                 (s->noise & 3);
 377
 378     case 0x03:  /* Z2 */
 379         s->dav &= 0xff7f;
 380         return TSC_CUT_RESOLUTION(Z2_TRANSFORM(s), s->precision) |
 381                 (s->noise & 3);
 382
 383     case 0x04:  /* KPData */
 384         if ((s->model & 0xff00) == 0x2300) {
 385             if (s->kb.intr && (s->kb.mode & 2)) {
 386                 s->kb.intr = 0;
 387                 qemu_irq_raise(s->kbint);
 388             }
 389             return s->kb.down;
 390         }
 391
 392         return 0xffff;
 393
 394     case 0x05:  /* BAT1 */
 395         s->dav &= 0xffbf;
 396         return TSC_CUT_RESOLUTION(BAT1_VAL, s->precision) +
 397                 (s->noise & 6);
 398
 399     case 0x06:  /* BAT2 */
 400         s->dav &= 0xffdf;
 401         return TSC_CUT_RESOLUTION(BAT2_VAL, s->precision);
 402
 403     case 0x07:  /* AUX1 */
 404         s->dav &= 0xffef;
 405         return TSC_CUT_RESOLUTION(AUX1_VAL, s->precision);
 406
 407     case 0x08:  /* AUX2 */
 408         s->dav &= 0xfff7;
 409         return 0xffff;
 410
 411     case 0x09:  /* TEMP1 */
 412         s->dav &= 0xfffb;
 413         return TSC_CUT_RESOLUTION(TEMP1_VAL, s->precision) -
 414                 (s->noise & 5);
 415
 416     case 0x0a:  /* TEMP2 */
 417         s->dav &= 0xfffd;
 418         return TSC_CUT_RESOLUTION(TEMP2_VAL, s->precision) ^
 419                 (s->noise & 3);
 420
 421     case 0x0b:  /* DAC */
 422         s->dav &= 0xfffe;
 423         return 0xffff;
 424
 425     default:
 426 #ifdef TSC_VERBOSE
 427         fprintf(stderr, "tsc2102_data_register_read: "
 428                         "no such register: 0x%02x\n", reg);
 429 #endif
 430         return 0xffff;
 431     }
 432 }
 433
 434 static uint16_t tsc2102_control_register_read(
 435                 TSC210xState *s, int reg)
 436 {
 437     switch (reg) {
 438     case 0x00:  /* TSC ADC */
 439         return (s->pressure << 15) | ((!s->busy) << 14) |
 440                 (s->nextfunction << 10) | (s->nextprecision << 8) | s->filter;
 441
 442     case 0x01:  /* Status / Keypad Control */
 443         if ((s->model & 0xff00) == 0x2100)
 444             return (s->pin_func << 14) | ((!s->enabled) << 13) |
 445                     (s->host_mode << 12) | ((!!s->dav) << 11) | s->dav;
 446         else
 447             return (s->kb.intr << 15) | ((s->kb.scan || !s->kb.down) << 14) |
 448                     (s->kb.debounce << 11);
 449
 450     case 0x02:  /* DAC Control */
 451         if ((s->model & 0xff00) == 0x2300)
 452             return s->dac_power & 0x8000;
 453         else
 454             goto bad_reg;
 455
 456     case 0x03:  /* Reference */
 457         return s->ref;
 458
 459     case 0x04:  /* Reset */
 460         return 0xffff;
 461
 462     case 0x05:  /* Configuration */
 463         return s->timing;
 464
 465     case 0x06:  /* Secondary configuration */
 466         if ((s->model & 0xff00) == 0x2100)
 467             goto bad_reg;
 468         return ((!s->dav) << 15) | ((s->kb.mode & 1) << 14) | s->pll[2];
 469
 470     case 0x10:  /* Keypad Mask */
 471         if ((s->model & 0xff00) == 0x2100)
 472             goto bad_reg;
 473         return s->kb.mask;
 474
 475     default:
 476     bad_reg:
 477 #ifdef TSC_VERBOSE
 478         fprintf(stderr, "tsc2102_control_register_read: "
 479                         "no such register: 0x%02x\n", reg);
 480 #endif
 481         return 0xffff;
 482     }
 483 }
 484
 485 static uint16_t tsc2102_audio_register_read(TSC210xState *s, int reg)
 486 {
 487     int l_ch, r_ch;
 488     uint16_t val;
 489
 490     switch (reg) {
 491     case 0x00:  /* Audio Control 1 */
 492         return s->audio_ctrl1;
 493
 494     case 0x01:
 495         return 0xff00;
 496
 497     case 0x02:  /* DAC Volume Control */
 498         return s->volume;
 499
 500     case 0x03:
 501         return 0x8b00;
 502
 503     case 0x04:  /* Audio Control 2 */
 504         l_ch = 1;
 505         r_ch = 1;
 506         if (s->softstep && !(s->dac_power & (1 << 10))) {
 507             l_ch = (qemu_get_clock(vm_clock) >
 508                             s->volume_change + TSC_SOFTSTEP_DELAY);
 509             r_ch = (qemu_get_clock(vm_clock) >
 510                             s->volume_change + TSC_SOFTSTEP_DELAY);
 511         }
 512
 513         return s->audio_ctrl2 | (l_ch << 3) | (r_ch << 2);
 514
 515     case 0x05:  /* Stereo DAC Power Control */
 516         return 0x2aa0 | s->dac_power |
 517                 (((s->dac_power & (1 << 10)) &&
 518                   (qemu_get_clock(vm_clock) >
 519                    s->powerdown + TSC_POWEROFF_DELAY)) << 6);
 520
 521     case 0x06:  /* Audio Control 3 */
 522         val = s->audio_ctrl3 | 0x0001;
 523         s->audio_ctrl3 &= 0xff3f;
 524         return val;
 525
 526     case 0x07:  /* LCH_BASS_BOOST_N0 */
 527     case 0x08:  /* LCH_BASS_BOOST_N1 */
 528     case 0x09:  /* LCH_BASS_BOOST_N2 */
 529     case 0x0a:  /* LCH_BASS_BOOST_N3 */
 530     case 0x0b:  /* LCH_BASS_BOOST_N4 */
 531     case 0x0c:  /* LCH_BASS_BOOST_N5 */
 532     case 0x0d:  /* LCH_BASS_BOOST_D1 */
 533     case 0x0e:  /* LCH_BASS_BOOST_D2 */
 534     case 0x0f:  /* LCH_BASS_BOOST_D4 */
 535     case 0x10:  /* LCH_BASS_BOOST_D5 */
 536     case 0x11:  /* RCH_BASS_BOOST_N0 */
 537     case 0x12:  /* RCH_BASS_BOOST_N1 */
 538     case 0x13:  /* RCH_BASS_BOOST_N2 */
 539     case 0x14:  /* RCH_BASS_BOOST_N3 */
 540     case 0x15:  /* RCH_BASS_BOOST_N4 */
 541     case 0x16:  /* RCH_BASS_BOOST_N5 */
 542     case 0x17:  /* RCH_BASS_BOOST_D1 */
 543     case 0x18:  /* RCH_BASS_BOOST_D2 */
 544     case 0x19:  /* RCH_BASS_BOOST_D4 */
 545     case 0x1a:  /* RCH_BASS_BOOST_D5 */
 546         return s->filter_data[reg - 0x07];
 547
 548     case 0x1b:  /* PLL Programmability 1 */
 549         return s->pll[0];
 550
 551     case 0x1c:  /* PLL Programmability 2 */
 552         return s->pll[1];
 553
 554     case 0x1d:  /* Audio Control 4 */
 555         return (!s->softstep) << 14;
 556
 557     default:
 558 #ifdef TSC_VERBOSE
 559         fprintf(stderr, "tsc2102_audio_register_read: "
 560                         "no such register: 0x%02x\n", reg);
 561 #endif
 562         return 0xffff;
 563     }
 564 }
 565
 566 static void tsc2102_data_register_write(
 567                 TSC210xState *s, int reg, uint16_t value)
 568 {
 569     switch (reg) {
 570     case 0x00:  /* X */
 571     case 0x01:  /* Y */
 572     case 0x02:  /* Z1 */
 573     case 0x03:  /* Z2 */
 574     case 0x05:  /* BAT1 */
 575     case 0x06:  /* BAT2 */
 576     case 0x07:  /* AUX1 */
 577     case 0x08:  /* AUX2 */
 578     case 0x09:  /* TEMP1 */
 579     case 0x0a:  /* TEMP2 */
 580         return;
 581
 582     default:
 583 #ifdef TSC_VERBOSE
 584         fprintf(stderr, "tsc2102_data_register_write: "
 585                         "no such register: 0x%02x\n", reg);
 586 #endif
 587     }
 588 }
 589
 590 static void tsc2102_control_register_write(
 591                 TSC210xState *s, int reg, uint16_t value)
 592 {
 593     switch (reg) {
 594     case 0x00:  /* TSC ADC */
 595         s->host_mode = value >> 15;
 596         s->enabled = !(value & 0x4000);
 597         if (s->busy && !s->enabled)
 598             qemu_del_timer(s->timer);
 599         s->busy &= s->enabled;
 600         s->nextfunction = (value >> 10) & 0xf;
 601         s->nextprecision = (value >> 8) & 3;
 602         s->filter = value & 0xff;
 603         return;
 604
 605     case 0x01:  /* Status / Keypad Control */
 606         if ((s->model & 0xff00) == 0x2100)
 607             s->pin_func = value >> 14;
 608         else {
 609             s->kb.scan = (value >> 14) & 1;
 610             s->kb.debounce = (value >> 11) & 7;
 611             if (s->kb.intr && s->kb.scan) {
 612                 s->kb.intr = 0;
 613                 qemu_irq_raise(s->kbint);
 614             }
 615         }
 616         return;
 617
 618     case 0x02:  /* DAC Control */
 619         if ((s->model & 0xff00) == 0x2300) {
 620             s->dac_power &= 0x7fff;
 621             s->dac_power |= 0x8000 & value;
 622         } else
 623             goto bad_reg;
 624         break;
 625
 626     case 0x03:  /* Reference */
 627         s->ref = value & 0x1f;
 628         return;
 629
 630     case 0x04:  /* Reset */
 631         if (value == 0xbb00) {
 632             if (s->busy)
 633                 qemu_del_timer(s->timer);
 634             tsc210x_reset(s);
 635 #ifdef TSC_VERBOSE
 636         } else {
 637             fprintf(stderr, "tsc2102_control_register_write: "
 638                             "wrong value written into RESET\n");
 639 #endif
 640         }
 641         return;
 642
 643     case 0x05:  /* Configuration */
 644         s->timing = value & 0x3f;
 645 #ifdef TSC_VERBOSE
 646         if (value & ~0x3f)
 647             fprintf(stderr, "tsc2102_control_register_write: "
 648                             "wrong value written into CONFIG\n");
 649 #endif
 650         return;
 651
 652     case 0x06:  /* Secondary configuration */
 653         if ((s->model & 0xff00) == 0x2100)
 654             goto bad_reg;
 655         s->kb.mode = value >> 14;
 656         s->pll[2] = value & 0x3ffff;
 657         return;
 658
 659     case 0x10:  /* Keypad Mask */
 660         if ((s->model & 0xff00) == 0x2100)
 661             goto bad_reg;
 662         s->kb.mask = value;
 663         return;
 664
 665     default:
 666     bad_reg:
 667 #ifdef TSC_VERBOSE
 668         fprintf(stderr, "tsc2102_control_register_write: "
 669                         "no such register: 0x%02x\n", reg);
 670 #endif
 671     }
 672 }
 673
 674 static void tsc2102_audio_register_write(
 675                 TSC210xState *s, int reg, uint16_t value)
 676 {
 677     switch (reg) {
 678     case 0x00:  /* Audio Control 1 */
 679         s->audio_ctrl1 = value & 0x0f3f;
 680 #ifdef TSC_VERBOSE
 681         if ((value & ~0x0f3f) || ((value & 7) != ((value >> 3) & 7)))
 682             fprintf(stderr, "tsc2102_audio_register_write: "
 683                             "wrong value written into Audio 1\n");
 684 #endif
 685         tsc2102_audio_rate_update(s);
 686         tsc2102_audio_output_update(s);
 687         return;
 688
 689     case 0x01:
 690 #ifdef TSC_VERBOSE
 691         if (value != 0xff00)
 692             fprintf(stderr, "tsc2102_audio_register_write: "
 693                             "wrong value written into reg 0x01\n");
 694 #endif
 695         return;
 696
 697     case 0x02:  /* DAC Volume Control */
 698         s->volume = value;
 699         s->volume_change = qemu_get_clock(vm_clock);
 700         return;
 701
 702     case 0x03:
 703 #ifdef TSC_VERBOSE
 704         if (value != 0x8b00)
 705             fprintf(stderr, "tsc2102_audio_register_write: "
 706                             "wrong value written into reg 0x03\n");
 707 #endif
 708         return;
 709
 710     case 0x04:  /* Audio Control 2 */
 711         s->audio_ctrl2 = value & 0xf7f2;
 712 #ifdef TSC_VERBOSE
 713         if (value & ~0xf7fd)
 714             fprintf(stderr, "tsc2102_audio_register_write: "
 715                             "wrong value written into Audio 2\n");
 716 #endif
 717         return;
 718
 719     case 0x05:  /* Stereo DAC Power Control */
 720         if ((value & ~s->dac_power) & (1 << 10))
 721             s->powerdown = qemu_get_clock(vm_clock);
 722
 723         s->dac_power = value & 0x9543;
 724 #ifdef TSC_VERBOSE
 725         if ((value & ~0x9543) != 0x2aa0)
 726             fprintf(stderr, "tsc2102_audio_register_write: "
 727                             "wrong value written into Power\n");
 728 #endif
 729         tsc2102_audio_rate_update(s);
 730         tsc2102_audio_output_update(s);
 731         return;
 732
 733     case 0x06:  /* Audio Control 3 */
 734         s->audio_ctrl3 &= 0x00c0;
 735         s->audio_ctrl3 |= value & 0xf800;
 736 #ifdef TSC_VERBOSE
 737         if (value & ~0xf8c7)
 738             fprintf(stderr, "tsc2102_audio_register_write: "
 739                             "wrong value written into Audio 3\n");
 740 #endif
 741         tsc2102_audio_output_update(s);
 742         return;
 743
 744     case 0x07:  /* LCH_BASS_BOOST_N0 */
 745     case 0x08:  /* LCH_BASS_BOOST_N1 */
 746     case 0x09:  /* LCH_BASS_BOOST_N2 */
 747     case 0x0a:  /* LCH_BASS_BOOST_N3 */
 748     case 0x0b:  /* LCH_BASS_BOOST_N4 */
 749     case 0x0c:  /* LCH_BASS_BOOST_N5 */
 750     case 0x0d:  /* LCH_BASS_BOOST_D1 */
 751     case 0x0e:  /* LCH_BASS_BOOST_D2 */
 752     case 0x0f:  /* LCH_BASS_BOOST_D4 */
 753     case 0x10:  /* LCH_BASS_BOOST_D5 */
 754     case 0x11:  /* RCH_BASS_BOOST_N0 */
 755     case 0x12:  /* RCH_BASS_BOOST_N1 */
 756     case 0x13:  /* RCH_BASS_BOOST_N2 */
 757     case 0x14:  /* RCH_BASS_BOOST_N3 */
 758     case 0x15:  /* RCH_BASS_BOOST_N4 */
 759     case 0x16:  /* RCH_BASS_BOOST_N5 */
 760     case 0x17:  /* RCH_BASS_BOOST_D1 */
 761     case 0x18:  /* RCH_BASS_BOOST_D2 */
 762     case 0x19:  /* RCH_BASS_BOOST_D4 */
 763     case 0x1a:  /* RCH_BASS_BOOST_D5 */
 764         s->filter_data[reg - 0x07] = value;
 765         return;
 766
 767     case 0x1b:  /* PLL Programmability 1 */
 768         s->pll[0] = value & 0xfffc;
 769 #ifdef TSC_VERBOSE
 770         if (value & ~0xfffc)
 771             fprintf(stderr, "tsc2102_audio_register_write: "
 772                             "wrong value written into PLL 1\n");
 773 #endif
 774         return;
 775
 776     case 0x1c:  /* PLL Programmability 2 */
 777         s->pll[1] = value & 0xfffc;
 778 #ifdef TSC_VERBOSE
 779         if (value & ~0xfffc)
 780             fprintf(stderr, "tsc2102_audio_register_write: "
 781                             "wrong value written into PLL 2\n");
 782 #endif
 783         return;
 784
 785     case 0x1d:  /* Audio Control 4 */
 786         s->softstep = !(value & 0x4000);
 787 #ifdef TSC_VERBOSE
 788         if (value & ~0x4000)
 789             fprintf(stderr, "tsc2102_audio_register_write: "
 790                             "wrong value written into Audio 4\n");
 791 #endif
 792         return;
 793
 794     default:
 795 #ifdef TSC_VERBOSE
 796         fprintf(stderr, "tsc2102_audio_register_write: "
 797                         "no such register: 0x%02x\n", reg);
 798 #endif
 799     }
 800 }
 801
 802 /* This handles most of the chip logic.  */
 803 static void tsc210x_pin_update(TSC210xState *s)
 804 {
 805     int64_t expires;
 806     int pin_state;
 807
 808     switch (s->pin_func) {
 809     case 0:
 810         pin_state = s->pressure;
 811         break;
 812     case 1:
 813         pin_state = !!s->dav;
 814         break;
 815     case 2:
 816     default:
 817         pin_state = s->pressure && !s->dav;
 818     }
 819
 820     if (!s->enabled)
 821         pin_state = 0;
 822
 823     if (pin_state != s->irq) {
 824         s->irq = pin_state;
 825         qemu_set_irq(s->pint, !s->irq);
 826     }
 827
 828     switch (s->nextfunction) {
 829     case TSC_MODE_XY_SCAN:
 830     case TSC_MODE_XYZ_SCAN:
 831         if (!s->pressure)
 832             return;
 833         break;
 834
 835     case TSC_MODE_X:
 836     case TSC_MODE_Y:
 837     case TSC_MODE_Z:
 838         if (!s->pressure)
 839             return;
 840         /* Fall through */
 841     case TSC_MODE_BAT1:
 842     case TSC_MODE_BAT2:
 843     case TSC_MODE_AUX:
 844     case TSC_MODE_TEMP1:
 845     case TSC_MODE_TEMP2:
 846         if (s->dav)
 847             s->enabled = 0;
 848         break;
 849
 850     case TSC_MODE_AUX_SCAN:
 851     case TSC_MODE_PORT_SCAN:
 852         break;
 853
 854     case TSC_MODE_NO_SCAN:
 855     case TSC_MODE_XX_DRV:
 856     case TSC_MODE_YY_DRV:
 857     case TSC_MODE_YX_DRV:
 858     default:
 859         return;
 860     }
 861
 862     if (!s->enabled || s->busy || s->dav)
 863         return;
 864
 865     s->busy = 1;
 866     s->precision = s->nextprecision;
 867     s->function = s->nextfunction;
 868     expires = qemu_get_clock(vm_clock) + (ticks_per_sec >> 10);
 869     qemu_mod_timer(s->timer, expires);
 870 }
 871
 872 static uint16_t tsc210x_read(TSC210xState *s)
 873 {
 874     uint16_t ret = 0x0000;
 875
 876     if (!s->command)
 877         fprintf(stderr, "tsc210x_read: SPI underrun!\n");
 878
 879     switch (s->page) {
 880     case TSC_DATA_REGISTERS_PAGE:
 881         ret = tsc2102_data_register_read(s, s->offset);
 882         if (!s->dav)
 883             qemu_irq_raise(s->davint);
 884         break;
 885     case TSC_CONTROL_REGISTERS_PAGE:
 886         ret = tsc2102_control_register_read(s, s->offset);
 887         break;
 888     case TSC_AUDIO_REGISTERS_PAGE:
 889         ret = tsc2102_audio_register_read(s, s->offset);
 890         break;
 891     default:
 892         hw_error("tsc210x_read: wrong memory page\n");
 893     }
 894
 895     tsc210x_pin_update(s);
 896
 897     /* Allow sequential reads.  */
 898     s->offset ++;
 899     s->state = 0;
 900     return ret;
 901 }
 902
 903 static void tsc210x_write(TSC210xState *s, uint16_t value)
 904 {
 905     /*
 906      * This is a two-state state machine for reading
 907      * command and data every second time.
 908      */
 909     if (!s->state) {
 910         s->command = value >> 15;
 911         s->page = (value >> 11) & 0x0f;
 912         s->offset = (value >> 5) & 0x3f;
 913         s->state = 1;
 914     } else {
 915         if (s->command)
 916             fprintf(stderr, "tsc210x_write: SPI overrun!\n");
 917         else
 918             switch (s->page) {
 919             case TSC_DATA_REGISTERS_PAGE:
 920                 tsc2102_data_register_write(s, s->offset, value);
 921                 break;
 922             case TSC_CONTROL_REGISTERS_PAGE:
 923                 tsc2102_control_register_write(s, s->offset, value);
 924                 break;
 925             case TSC_AUDIO_REGISTERS_PAGE:
 926                 tsc2102_audio_register_write(s, s->offset, value);
 927                 break;
 928             default:
 929                 hw_error("tsc210x_write: wrong memory page\n");
 930             }
 931
 932         tsc210x_pin_update(s);
 933         s->state = 0;
 934     }
 935 }
 936
 937 uint32_t tsc210x_txrx(void *opaque, uint32_t value, int len)
 938 {
 939     TSC210xState *s = opaque;
 940     uint32_t ret = 0;
 941
 942     if (len != 16)
 943         hw_error("%s: FIXME: bad SPI word width %i\n", __FUNCTION__, len);
 944
 945     /* TODO: sequential reads etc - how do we make sure the host doesn't
 946      * unintentionally read out a conversion result from a register while
 947      * transmitting the command word of the next command?  */
 948     if (!value || (s->state && s->command))
 949         ret = tsc210x_read(s);
 950     if (value || (s->state && !s->command))
 951         tsc210x_write(s, value);
 952
 953     return ret;
 954 }
 955
 956 static void tsc210x_timer_tick(void *opaque)
 957 {
 958     TSC210xState *s = opaque;
 959
 960     /* Timer ticked -- a set of conversions has been finished.  */
 961
 962     if (!s->busy)
 963         return;
 964
 965     s->busy = 0;
 966     s->dav |= mode_regs[s->function];
 967     tsc210x_pin_update(s);
 968     qemu_irq_lower(s->davint);
 969 }
 970
 971 static void tsc210x_touchscreen_event(void *opaque,
 972                 int x, int y, int z, int buttons_state)
 973 {
 974     TSC210xState *s = opaque;
 975     int p = s->pressure;
 976
 977     if (buttons_state) {
 978         s->x = x;
 979         s->y = y;
 980     }
 981     s->pressure = !!buttons_state;
 982
 983     /*
 984      * Note: We would get better responsiveness in the guest by
 985      * signaling TS events immediately, but for now we simulate
 986      * the first conversion delay for sake of correctness.
 987      */
 988     if (p != s->pressure)
 989         tsc210x_pin_update(s);
 990 }
 991
 992 static void tsc210x_i2s_swallow(TSC210xState *s)
 993 {
 994     if (s->dac_voice[0])
 995         tsc210x_out_flush(s, s->codec.out.len);
 996     else
 997         s->codec.out.len = 0;
 998 }
 999
1000 static void tsc210x_i2s_set_rate(TSC210xState *s, int in, int out)
1001 {
1002     s->i2s_tx_rate = out;
1003     s->i2s_rx_rate = in;
1004 }
1005
1006 static void tsc210x_save(QEMUFile *f, void *opaque)
1007 {
1008     TSC210xState *s = (TSC210xState *) opaque;
1009     int64_t now = qemu_get_clock(vm_clock);
1010     int i;
1011
1012     qemu_put_be16(f, s->x);
1013     qemu_put_be16(f, s->y);
1014     qemu_put_byte(f, s->pressure);
1015
1016     qemu_put_byte(f, s->state);
1017     qemu_put_byte(f, s->page);
1018     qemu_put_byte(f, s->offset);
1019     qemu_put_byte(f, s->command);
1020
1021     qemu_put_byte(f, s->irq);
1022     qemu_put_be16s(f, &s->dav);
1023
1024     qemu_put_timer(f, s->timer);
1025     qemu_put_byte(f, s->enabled);
1026     qemu_put_byte(f, s->host_mode);
1027     qemu_put_byte(f, s->function);
1028     qemu_put_byte(f, s->nextfunction);
1029     qemu_put_byte(f, s->precision);
1030     qemu_put_byte(f, s->nextprecision);
1031     qemu_put_byte(f, s->filter);
1032     qemu_put_byte(f, s->pin_func);
1033     qemu_put_byte(f, s->ref);
1034     qemu_put_byte(f, s->timing);
1035     qemu_put_be32(f, s->noise);
1036
1037     qemu_put_be16s(f, &s->audio_ctrl1);
1038     qemu_put_be16s(f, &s->audio_ctrl2);
1039     qemu_put_be16s(f, &s->audio_ctrl3);
1040     qemu_put_be16s(f, &s->pll[0]);
1041     qemu_put_be16s(f, &s->pll[1]);
1042     qemu_put_be16s(f, &s->volume);
1043     qemu_put_sbe64(f, (s->volume_change - now));
1044     qemu_put_sbe64(f, (s->powerdown - now));
1045     qemu_put_byte(f, s->softstep);
1046     qemu_put_be16s(f, &s->dac_power);
1047
1048     for (i = 0; i < 0x14; i ++)
1049         qemu_put_be16s(f, &s->filter_data[i]);
1050 }
1051
1052 static int tsc210x_load(QEMUFile *f, void *opaque, int version_id)
1053 {
1054     TSC210xState *s = (TSC210xState *) opaque;
1055     int64_t now = qemu_get_clock(vm_clock);
1056     int i;
1057
1058     s->x = qemu_get_be16(f);
1059     s->y = qemu_get_be16(f);
1060     s->pressure = qemu_get_byte(f);
1061
1062     s->state = qemu_get_byte(f);
1063     s->page = qemu_get_byte(f);
1064     s->offset = qemu_get_byte(f);
1065     s->command = qemu_get_byte(f);
1066
1067     s->irq = qemu_get_byte(f);
1068     qemu_get_be16s(f, &s->dav);
1069
1070     qemu_get_timer(f, s->timer);
1071     s->enabled = qemu_get_byte(f);
1072     s->host_mode = qemu_get_byte(f);
1073     s->function = qemu_get_byte(f);
1074     s->nextfunction = qemu_get_byte(f);
1075     s->precision = qemu_get_byte(f);
1076     s->nextprecision = qemu_get_byte(f);
1077     s->filter = qemu_get_byte(f);
1078     s->pin_func = qemu_get_byte(f);
1079     s->ref = qemu_get_byte(f);
1080     s->timing = qemu_get_byte(f);
1081     s->noise = qemu_get_be32(f);
1082
1083     qemu_get_be16s(f, &s->audio_ctrl1);
1084     qemu_get_be16s(f, &s->audio_ctrl2);
1085     qemu_get_be16s(f, &s->audio_ctrl3);
1086     qemu_get_be16s(f, &s->pll[0]);
1087     qemu_get_be16s(f, &s->pll[1]);
1088     qemu_get_be16s(f, &s->volume);
1089     s->volume_change = qemu_get_sbe64(f) + now;
1090     s->powerdown = qemu_get_sbe64(f) + now;
1091     s->softstep = qemu_get_byte(f);
1092     qemu_get_be16s(f, &s->dac_power);
1093
1094     for (i = 0; i < 0x14; i ++)
1095         qemu_get_be16s(f, &s->filter_data[i]);
1096
1097     s->busy = qemu_timer_pending(s->timer);
1098     qemu_set_irq(s->pint, !s->irq);
1099     qemu_set_irq(s->davint, !s->dav);
1100
1101     return 0;
1102 }
1103
1104 uWireSlave *tsc2102_init(qemu_irq pint)
1105 {
1106     TSC210xState *s;
1107
1108     s = (TSC210xState *)
1109             qemu_mallocz(sizeof(TSC210xState));
1110     memset(s, 0, sizeof(TSC210xState));
1111     s->x = 160;
1112     s->y = 160;
1113     s->pressure = 0;
1114     s->precision = s->nextprecision = 0;
1115     s->timer = qemu_new_timer(vm_clock, tsc210x_timer_tick, s);
1116     s->pint = pint;
1117     s->model = 0x2102;
1118     s->name = "tsc2102";
1119
1120     s->tr[0] = 0;
1121     s->tr[1] = 1;
1122     s->tr[2] = 1;
1123     s->tr[3] = 0;
1124     s->tr[4] = 1;
1125     s->tr[5] = 0;
1126     s->tr[6] = 1;
1127     s->tr[7] = 0;
1128
1129     s->chip.opaque = s;
1130     s->chip.send = (void *) tsc210x_write;
1131     s->chip.receive = (void *) tsc210x_read;
1132
1133     s->codec.opaque = s;
1134     s->codec.tx_swallow = (void *) tsc210x_i2s_swallow;
1135     s->codec.set_rate = (void *) tsc210x_i2s_set_rate;
1136     s->codec.in.fifo = s->in_fifo;
1137     s->codec.out.fifo = s->out_fifo;
1138
1139     tsc210x_reset(s);
1140
1141     qemu_add_mouse_event_handler(tsc210x_touchscreen_event, s, 1,
1142                     "QEMU TSC2102-driven Touchscreen");
1143
1144     AUD_register_card(s->name, &s->card);
1145
1146     qemu_register_reset((void *) tsc210x_reset, 0, s);
1147     register_savevm(s->name, -1, 0,
1148                     tsc210x_save, tsc210x_load, s);
1149
1150     return &s->chip;
1151 }
1152
1153 uWireSlave *tsc2301_init(qemu_irq penirq, qemu_irq kbirq, qemu_irq dav)
1154 {
1155     TSC210xState *s;
1156
1157     s = (TSC210xState *)
1158             qemu_mallocz(sizeof(TSC210xState));
1159     memset(s, 0, sizeof(TSC210xState));
1160     s->x = 400;
1161     s->y = 240;
1162     s->pressure = 0;
1163     s->precision = s->nextprecision = 0;
1164     s->timer = qemu_new_timer(vm_clock, tsc210x_timer_tick, s);
1165     s->pint = penirq;
1166     s->kbint = kbirq;
1167     s->davint = dav;
1168     s->model = 0x2301;
1169     s->name = "tsc2301";
1170
1171     s->tr[0] = 0;
1172     s->tr[1] = 1;
1173     s->tr[2] = 1;
1174     s->tr[3] = 0;
1175     s->tr[4] = 1;
1176     s->tr[5] = 0;
1177     s->tr[6] = 1;
1178     s->tr[7] = 0;
1179
1180     s->chip.opaque = s;
1181     s->chip.send = (void *) tsc210x_write;
1182     s->chip.receive = (void *) tsc210x_read;
1183
1184     s->codec.opaque = s;
1185     s->codec.tx_swallow = (void *) tsc210x_i2s_swallow;
1186     s->codec.set_rate = (void *) tsc210x_i2s_set_rate;
1187     s->codec.in.fifo = s->in_fifo;
1188     s->codec.out.fifo = s->out_fifo;
1189
1190     tsc210x_reset(s);
1191
1192     qemu_add_mouse_event_handler(tsc210x_touchscreen_event, s, 1,
1193                     "QEMU TSC2301-driven Touchscreen");
1194
1195     AUD_register_card(s->name, &s->card);
1196
1197     qemu_register_reset((void *) tsc210x_reset, 0, s);
1198     register_savevm(s->name, -1, 0, tsc210x_save, tsc210x_load, s);
1199
1200     return &s->chip;
1201 }
1202
1203 I2SCodec *tsc210x_codec(uWireSlave *chip)
1204 {
1205     TSC210xState *s = (TSC210xState *) chip->opaque;
1206
1207     return &s->codec;
1208 }
1209
1210 /*
1211  * Use tslib generated calibration data to generate ADC input values
1212  * from the touchscreen.  Assuming 12-bit precision was used during
1213  * tslib calibration.
1214  */
1215 void tsc210x_set_transform(uWireSlave *chip,
1216                 MouseTransformInfo *info)
1217 {
1218     TSC210xState *s = (TSC210xState *) chip->opaque;
1219 #if 0
1220     int64_t ltr[8];
1221
1222     ltr[0] = (int64_t) info->a[1] * info->y;
1223     ltr[1] = (int64_t) info->a[4] * info->x;
1224     ltr[2] = (int64_t) info->a[1] * info->a[3] -
1225             (int64_t) info->a[4] * info->a[0];
1226     ltr[3] = (int64_t) info->a[2] * info->a[4] -
1227             (int64_t) info->a[5] * info->a[1];
1228     ltr[4] = (int64_t) info->a[0] * info->y;
1229     ltr[5] = (int64_t) info->a[3] * info->x;
1230     ltr[6] = (int64_t) info->a[4] * info->a[0] -
1231             (int64_t) info->a[1] * info->a[3];
1232     ltr[7] = (int64_t) info->a[2] * info->a[3] -
1233             (int64_t) info->a[5] * info->a[0];
1234
1235     /* Avoid integer overflow */
1236     s->tr[0] = ltr[0] >> 11;
1237     s->tr[1] = ltr[1] >> 11;
1238     s->tr[2] = muldiv64(ltr[2], 1, info->a[6]);
1239     s->tr[3] = muldiv64(ltr[3], 1 << 4, ltr[2]);
1240     s->tr[4] = ltr[4] >> 11;
1241     s->tr[5] = ltr[5] >> 11;
1242     s->tr[6] = muldiv64(ltr[6], 1, info->a[6]);
1243     s->tr[7] = muldiv64(ltr[7], 1 << 4, ltr[6]);
1244 #else
1245
1246     /* This version assumes touchscreen X & Y axis are parallel or
1247      * perpendicular to LCD's  X & Y axis in some way.  */
1248     if (abs(info->a[0]) > abs(info->a[1])) {
1249         s->tr[0] = 0;
1250         s->tr[1] = -info->a[6] * info->x;
1251         s->tr[2] = info->a[0];
1252         s->tr[3] = -info->a[2] / info->a[0];
1253         s->tr[4] = info->a[6] * info->y;
1254         s->tr[5] = 0;
1255         s->tr[6] = info->a[4];
1256         s->tr[7] = -info->a[5] / info->a[4];
1257     } else {
1258         s->tr[0] = info->a[6] * info->y;
1259         s->tr[1] = 0;
1260         s->tr[2] = info->a[1];
1261         s->tr[3] = -info->a[2] / info->a[1];
1262         s->tr[4] = 0;
1263         s->tr[5] = -info->a[6] * info->x;
1264         s->tr[6] = info->a[3];
1265         s->tr[7] = -info->a[5] / info->a[3];
1266     }
1267
1268     s->tr[0] >>= 11;
1269     s->tr[1] >>= 11;
1270     s->tr[3] <<= 4;
1271     s->tr[4] >>= 11;
1272     s->tr[5] >>= 11;
1273     s->tr[7] <<= 4;
1274 #endif
1275 }
1276
1277 void tsc210x_key_event(uWireSlave *chip, int key, int down)
1278 {
1279     TSC210xState *s = (TSC210xState *) chip->opaque;
1280
1281     if (down)
1282         s->kb.down |= 1 << key;
1283     else
1284         s->kb.down &= ~(1 << key);
1285
1286     if (down && (s->kb.down & ~s->kb.mask) && !s->kb.intr) {
1287         s->kb.intr = 1;
1288         qemu_irq_lower(s->kbint);
1289     } else if (s->kb.intr && !(s->kb.down & ~s->kb.mask) &&
1290                     !(s->kb.mode & 1)) {
1291         s->kb.intr = 0;
1292         qemu_irq_raise(s->kbint);
1293     }
1294 }