hw/twl92230.c

   1 /*
   2  * TI TWL92230C energy-management companion device for the OMAP24xx.
   3  * Aka. Menelaus (N4200 MENELAUS1_V2.2)
   4  *
   5  * Copyright (C) 2008 Nokia Corporation
   6  * Written by Andrzej Zaborowski <andrew@openedhand.com>
   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 "hw.h"
  23 #include "qemu-timer.h"
  24 #include "i2c.h"
  25 #include "console.h"
  26
  27 #define VERBOSE 1
  28
  29 typedef struct {
  30     i2c_slave i2c;
  31
  32     int firstbyte;
  33     uint8_t reg;
  34
  35     uint8_t vcore[5];
  36     uint8_t dcdc[3];
  37     uint8_t ldo[8];
  38     uint8_t sleep[2];
  39     uint8_t osc;
  40     uint8_t detect;
  41     uint16_t mask;
  42     uint16_t status;
  43     uint8_t dir;
  44     uint8_t inputs;
  45     uint8_t outputs;
  46     uint8_t bbsms;
  47     uint8_t pull[4];
  48     uint8_t mmc_ctrl[3];
  49     uint8_t mmc_debounce;
  50     struct {
  51         uint8_t ctrl;
  52         uint16_t comp;
  53         QEMUTimer *hz_tm;
  54         int64_t next;
  55         struct tm tm;
  56         struct tm new;
  57         struct tm alm;
  58         int sec_offset;
  59         int alm_sec;
  60         int next_comp;
  61     } rtc;
  62     uint16_t rtc_next_vmstate;
  63     qemu_irq out[4];
  64     qemu_irq *in;
  65     uint8_t pwrbtn_state;
  66     qemu_irq pwrbtn;
  67 } MenelausState;
  68
  69 static inline void menelaus_update(MenelausState *s)
  70 {
  71     qemu_set_irq(s->out[3], s->status & ~s->mask);
  72 }
  73
  74 static inline void menelaus_rtc_start(MenelausState *s)
  75 {
  76     s->rtc.next += qemu_get_clock_ms(rt_clock);
  77     qemu_mod_timer(s->rtc.hz_tm, s->rtc.next);
  78 }
  79
  80 static inline void menelaus_rtc_stop(MenelausState *s)
  81 {
  82     qemu_del_timer(s->rtc.hz_tm);
  83     s->rtc.next -= qemu_get_clock_ms(rt_clock);
  84     if (s->rtc.next < 1)
  85         s->rtc.next = 1;
  86 }
  87
  88 static void menelaus_rtc_update(MenelausState *s)
  89 {
  90     qemu_get_timedate(&s->rtc.tm, s->rtc.sec_offset);
  91 }
  92
  93 static void menelaus_alm_update(MenelausState *s)
  94 {
  95     if ((s->rtc.ctrl & 3) == 3)
  96         s->rtc.alm_sec = qemu_timedate_diff(&s->rtc.alm) - s->rtc.sec_offset;
  97 }
  98
  99 static void menelaus_rtc_hz(void *opaque)
 100 {
 101     MenelausState *s = (MenelausState *) opaque;
 102
 103     s->rtc.next_comp --;
 104     s->rtc.alm_sec --;
 105     s->rtc.next += 1000;
 106     qemu_mod_timer(s->rtc.hz_tm, s->rtc.next);
 107     if ((s->rtc.ctrl >> 3) & 3) {                               /* EVERY */
 108         menelaus_rtc_update(s);
 109         if (((s->rtc.ctrl >> 3) & 3) == 1 && !s->rtc.tm.tm_sec)
 110             s->status |= 1 << 8;                                /* RTCTMR */
 111         else if (((s->rtc.ctrl >> 3) & 3) == 2 && !s->rtc.tm.tm_min)
 112             s->status |= 1 << 8;                                /* RTCTMR */
 113         else if (!s->rtc.tm.tm_hour)
 114             s->status |= 1 << 8;                                /* RTCTMR */
 115     } else
 116         s->status |= 1 << 8;                                    /* RTCTMR */
 117     if ((s->rtc.ctrl >> 1) & 1) {                               /* RTC_AL_EN */
 118         if (s->rtc.alm_sec == 0)
 119             s->status |= 1 << 9;                                /* RTCALM */
 120         /* TODO: wake-up */
 121     }
 122     if (s->rtc.next_comp <= 0) {
 123         s->rtc.next -= muldiv64((int16_t) s->rtc.comp, 1000, 0x8000);
 124         s->rtc.next_comp = 3600;
 125     }
 126     menelaus_update(s);
 127 }
 128
 129 static void menelaus_reset(i2c_slave *i2c)
 130 {
 131     MenelausState *s = (MenelausState *) i2c;
 132     s->reg = 0x00;
 133
 134     s->vcore[0] = 0x0c; /* XXX: X-loader needs 0x8c? check!  */
 135     s->vcore[1] = 0x05;
 136     s->vcore[2] = 0x02;
 137     s->vcore[3] = 0x0c;
 138     s->vcore[4] = 0x03;
 139     s->dcdc[0] = 0x33;  /* Depends on wiring */
 140     s->dcdc[1] = 0x03;
 141     s->dcdc[2] = 0x00;
 142     s->ldo[0] = 0x95;
 143     s->ldo[1] = 0x7e;
 144     s->ldo[2] = 0x00;
 145     s->ldo[3] = 0x00;   /* Depends on wiring */
 146     s->ldo[4] = 0x03;   /* Depends on wiring */
 147     s->ldo[5] = 0x00;
 148     s->ldo[6] = 0x00;
 149     s->ldo[7] = 0x00;
 150     s->sleep[0] = 0x00;
 151     s->sleep[1] = 0x00;
 152     s->osc = 0x01;
 153     s->detect = 0x09;
 154     s->mask = 0x0fff;
 155     s->status = 0;
 156     s->dir = 0x07;
 157     s->outputs = 0x00;
 158     s->bbsms = 0x00;
 159     s->pull[0] = 0x00;
 160     s->pull[1] = 0x00;
 161     s->pull[2] = 0x00;
 162     s->pull[3] = 0x00;
 163     s->mmc_ctrl[0] = 0x03;
 164     s->mmc_ctrl[1] = 0xc0;
 165     s->mmc_ctrl[2] = 0x00;
 166     s->mmc_debounce = 0x05;
 167
 168     if (s->rtc.ctrl & 1)
 169         menelaus_rtc_stop(s);
 170     s->rtc.ctrl = 0x00;
 171     s->rtc.comp = 0x0000;
 172     s->rtc.next = 1000;
 173     s->rtc.sec_offset = 0;
 174     s->rtc.next_comp = 1800;
 175     s->rtc.alm_sec = 1800;
 176     s->rtc.alm.tm_sec = 0x00;
 177     s->rtc.alm.tm_min = 0x00;
 178     s->rtc.alm.tm_hour = 0x00;
 179     s->rtc.alm.tm_mday = 0x01;
 180     s->rtc.alm.tm_mon = 0x00;
 181     s->rtc.alm.tm_year = 2004;
 182     menelaus_update(s);
 183 }
 184
 185 static void menelaus_gpio_set(void *opaque, int line, int level)
 186 {
 187     MenelausState *s = (MenelausState *) opaque;
 188
 189     /* No interrupt generated */
 190     s->inputs &= ~(1 << line);
 191     s->inputs |= level << line;
 192 }
 193
 194 static void menelaus_pwrbtn_set(void *opaque, int line, int level)
 195 {
 196     MenelausState *s = (MenelausState *) opaque;
 197
 198     if (!s->pwrbtn_state && level) {
 199         s->status |= 1 << 11;                                   /* PSHBTN */
 200         menelaus_update(s);
 201     }
 202     s->pwrbtn_state = level;
 203 }
 204
 205 #define MENELAUS_REV            0x01
 206 #define MENELAUS_VCORE_CTRL1    0x02
 207 #define MENELAUS_VCORE_CTRL2    0x03
 208 #define MENELAUS_VCORE_CTRL3    0x04
 209 #define MENELAUS_VCORE_CTRL4    0x05
 210 #define MENELAUS_VCORE_CTRL5    0x06
 211 #define MENELAUS_DCDC_CTRL1     0x07
 212 #define MENELAUS_DCDC_CTRL2     0x08
 213 #define MENELAUS_DCDC_CTRL3     0x09
 214 #define MENELAUS_LDO_CTRL1      0x0a
 215 #define MENELAUS_LDO_CTRL2      0x0b
 216 #define MENELAUS_LDO_CTRL3      0x0c
 217 #define MENELAUS_LDO_CTRL4      0x0d
 218 #define MENELAUS_LDO_CTRL5      0x0e
 219 #define MENELAUS_LDO_CTRL6      0x0f
 220 #define MENELAUS_LDO_CTRL7      0x10
 221 #define MENELAUS_LDO_CTRL8      0x11
 222 #define MENELAUS_SLEEP_CTRL1    0x12
 223 #define MENELAUS_SLEEP_CTRL2    0x13
 224 #define MENELAUS_DEVICE_OFF     0x14
 225 #define MENELAUS_OSC_CTRL       0x15
 226 #define MENELAUS_DETECT_CTRL    0x16
 227 #define MENELAUS_INT_MASK1      0x17
 228 #define MENELAUS_INT_MASK2      0x18
 229 #define MENELAUS_INT_STATUS1    0x19
 230 #define MENELAUS_INT_STATUS2    0x1a
 231 #define MENELAUS_INT_ACK1       0x1b
 232 #define MENELAUS_INT_ACK2       0x1c
 233 #define MENELAUS_GPIO_CTRL      0x1d
 234 #define MENELAUS_GPIO_IN        0x1e
 235 #define MENELAUS_GPIO_OUT       0x1f
 236 #define MENELAUS_BBSMS          0x20
 237 #define MENELAUS_RTC_CTRL       0x21
 238 #define MENELAUS_RTC_UPDATE     0x22
 239 #define MENELAUS_RTC_SEC        0x23
 240 #define MENELAUS_RTC_MIN        0x24
 241 #define MENELAUS_RTC_HR         0x25
 242 #define MENELAUS_RTC_DAY        0x26
 243 #define MENELAUS_RTC_MON        0x27
 244 #define MENELAUS_RTC_YR         0x28
 245 #define MENELAUS_RTC_WKDAY      0x29
 246 #define MENELAUS_RTC_AL_SEC     0x2a
 247 #define MENELAUS_RTC_AL_MIN     0x2b
 248 #define MENELAUS_RTC_AL_HR      0x2c
 249 #define MENELAUS_RTC_AL_DAY     0x2d
 250 #define MENELAUS_RTC_AL_MON     0x2e
 251 #define MENELAUS_RTC_AL_YR      0x2f
 252 #define MENELAUS_RTC_COMP_MSB   0x30
 253 #define MENELAUS_RTC_COMP_LSB   0x31
 254 #define MENELAUS_S1_PULL_EN     0x32
 255 #define MENELAUS_S1_PULL_DIR    0x33
 256 #define MENELAUS_S2_PULL_EN     0x34
 257 #define MENELAUS_S2_PULL_DIR    0x35
 258 #define MENELAUS_MCT_CTRL1      0x36
 259 #define MENELAUS_MCT_CTRL2      0x37
 260 #define MENELAUS_MCT_CTRL3      0x38
 261 #define MENELAUS_MCT_PIN_ST     0x39
 262 #define MENELAUS_DEBOUNCE1      0x3a
 263
 264 static uint8_t menelaus_read(void *opaque, uint8_t addr)
 265 {
 266     MenelausState *s = (MenelausState *) opaque;
 267     int reg = 0;
 268
 269     switch (addr) {
 270     case MENELAUS_REV:
 271         return 0x22;
 272
 273     case MENELAUS_VCORE_CTRL5: reg ++;
 274     case MENELAUS_VCORE_CTRL4: reg ++;
 275     case MENELAUS_VCORE_CTRL3: reg ++;
 276     case MENELAUS_VCORE_CTRL2: reg ++;
 277     case MENELAUS_VCORE_CTRL1:
 278         return s->vcore[reg];
 279
 280     case MENELAUS_DCDC_CTRL3: reg ++;
 281     case MENELAUS_DCDC_CTRL2: reg ++;
 282     case MENELAUS_DCDC_CTRL1:
 283         return s->dcdc[reg];
 284
 285     case MENELAUS_LDO_CTRL8: reg ++;
 286     case MENELAUS_LDO_CTRL7: reg ++;
 287     case MENELAUS_LDO_CTRL6: reg ++;
 288     case MENELAUS_LDO_CTRL5: reg ++;
 289     case MENELAUS_LDO_CTRL4: reg ++;
 290     case MENELAUS_LDO_CTRL3: reg ++;
 291     case MENELAUS_LDO_CTRL2: reg ++;
 292     case MENELAUS_LDO_CTRL1:
 293         return s->ldo[reg];
 294
 295     case MENELAUS_SLEEP_CTRL2: reg ++;
 296     case MENELAUS_SLEEP_CTRL1:
 297         return s->sleep[reg];
 298
 299     case MENELAUS_DEVICE_OFF:
 300         return 0;
 301
 302     case MENELAUS_OSC_CTRL:
 303         return s->osc | (1 << 7);                       /* CLK32K_GOOD */
 304
 305     case MENELAUS_DETECT_CTRL:
 306         return s->detect;
 307
 308     case MENELAUS_INT_MASK1:
 309         return (s->mask >> 0) & 0xff;
 310     case MENELAUS_INT_MASK2:
 311         return (s->mask >> 8) & 0xff;
 312
 313     case MENELAUS_INT_STATUS1:
 314         return (s->status >> 0) & 0xff;
 315     case MENELAUS_INT_STATUS2:
 316         return (s->status >> 8) & 0xff;
 317
 318     case MENELAUS_INT_ACK1:
 319     case MENELAUS_INT_ACK2:
 320         return 0;
 321
 322     case MENELAUS_GPIO_CTRL:
 323         return s->dir;
 324     case MENELAUS_GPIO_IN:
 325         return s->inputs | (~s->dir & s->outputs);
 326     case MENELAUS_GPIO_OUT:
 327         return s->outputs;
 328
 329     case MENELAUS_BBSMS:
 330         return s->bbsms;
 331
 332     case MENELAUS_RTC_CTRL:
 333         return s->rtc.ctrl;
 334     case MENELAUS_RTC_UPDATE:
 335         return 0x00;
 336     case MENELAUS_RTC_SEC:
 337         menelaus_rtc_update(s);
 338         return to_bcd(s->rtc.tm.tm_sec);
 339     case MENELAUS_RTC_MIN:
 340         menelaus_rtc_update(s);
 341         return to_bcd(s->rtc.tm.tm_min);
 342     case MENELAUS_RTC_HR:
 343         menelaus_rtc_update(s);
 344         if ((s->rtc.ctrl >> 2) & 1)                     /* MODE12_n24 */
 345             return to_bcd((s->rtc.tm.tm_hour % 12) + 1) |
 346                     (!!(s->rtc.tm.tm_hour >= 12) << 7); /* PM_nAM */
 347         else
 348             return to_bcd(s->rtc.tm.tm_hour);
 349     case MENELAUS_RTC_DAY:
 350         menelaus_rtc_update(s);
 351         return to_bcd(s->rtc.tm.tm_mday);
 352     case MENELAUS_RTC_MON:
 353         menelaus_rtc_update(s);
 354         return to_bcd(s->rtc.tm.tm_mon + 1);
 355     case MENELAUS_RTC_YR:
 356         menelaus_rtc_update(s);
 357         return to_bcd(s->rtc.tm.tm_year - 2000);
 358     case MENELAUS_RTC_WKDAY:
 359         menelaus_rtc_update(s);
 360         return to_bcd(s->rtc.tm.tm_wday);
 361     case MENELAUS_RTC_AL_SEC:
 362         return to_bcd(s->rtc.alm.tm_sec);
 363     case MENELAUS_RTC_AL_MIN:
 364         return to_bcd(s->rtc.alm.tm_min);
 365     case MENELAUS_RTC_AL_HR:
 366         if ((s->rtc.ctrl >> 2) & 1)                     /* MODE12_n24 */
 367             return to_bcd((s->rtc.alm.tm_hour % 12) + 1) |
 368                     (!!(s->rtc.alm.tm_hour >= 12) << 7);/* AL_PM_nAM */
 369         else
 370             return to_bcd(s->rtc.alm.tm_hour);
 371     case MENELAUS_RTC_AL_DAY:
 372         return to_bcd(s->rtc.alm.tm_mday);
 373     case MENELAUS_RTC_AL_MON:
 374         return to_bcd(s->rtc.alm.tm_mon + 1);
 375     case MENELAUS_RTC_AL_YR:
 376         return to_bcd(s->rtc.alm.tm_year - 2000);
 377     case MENELAUS_RTC_COMP_MSB:
 378         return (s->rtc.comp >> 8) & 0xff;
 379     case MENELAUS_RTC_COMP_LSB:
 380         return (s->rtc.comp >> 0) & 0xff;
 381
 382     case MENELAUS_S1_PULL_EN:
 383         return s->pull[0];
 384     case MENELAUS_S1_PULL_DIR:
 385         return s->pull[1];
 386     case MENELAUS_S2_PULL_EN:
 387         return s->pull[2];
 388     case MENELAUS_S2_PULL_DIR:
 389         return s->pull[3];
 390
 391     case MENELAUS_MCT_CTRL3: reg ++;
 392     case MENELAUS_MCT_CTRL2: reg ++;
 393     case MENELAUS_MCT_CTRL1:
 394         return s->mmc_ctrl[reg];
 395     case MENELAUS_MCT_PIN_ST:
 396         /* TODO: return the real Card Detect */
 397         return 0;
 398     case MENELAUS_DEBOUNCE1:
 399         return s->mmc_debounce;
 400
 401     default:
 402 #ifdef VERBOSE
 403         printf("%s: unknown register %02x\n", __FUNCTION__, addr);
 404 #endif
 405         break;
 406     }
 407     return 0;
 408 }
 409
 410 static void menelaus_write(void *opaque, uint8_t addr, uint8_t value)
 411 {
 412     MenelausState *s = (MenelausState *) opaque;
 413     int line;
 414     int reg = 0;
 415     struct tm tm;
 416
 417     switch (addr) {
 418     case MENELAUS_VCORE_CTRL1:
 419         s->vcore[0] = (value & 0xe) | MIN(value & 0x1f, 0x12);
 420         break;
 421     case MENELAUS_VCORE_CTRL2:
 422         s->vcore[1] = value;
 423         break;
 424     case MENELAUS_VCORE_CTRL3:
 425         s->vcore[2] = MIN(value & 0x1f, 0x12);
 426         break;
 427     case MENELAUS_VCORE_CTRL4:
 428         s->vcore[3] = MIN(value & 0x1f, 0x12);
 429         break;
 430     case MENELAUS_VCORE_CTRL5:
 431         s->vcore[4] = value & 3;
 432         /* XXX
 433          * auto set to 3 on M_Active, nRESWARM
 434          * auto set to 0 on M_WaitOn, M_Backup
 435          */
 436         break;
 437
 438     case MENELAUS_DCDC_CTRL1:
 439         s->dcdc[0] = value & 0x3f;
 440         break;
 441     case MENELAUS_DCDC_CTRL2:
 442         s->dcdc[1] = value & 0x07;
 443         /* XXX
 444          * auto set to 3 on M_Active, nRESWARM
 445          * auto set to 0 on M_WaitOn, M_Backup
 446          */
 447         break;
 448     case MENELAUS_DCDC_CTRL3:
 449         s->dcdc[2] = value & 0x07;
 450         break;
 451
 452     case MENELAUS_LDO_CTRL1:
 453         s->ldo[0] = value;
 454         break;
 455     case MENELAUS_LDO_CTRL2:
 456         s->ldo[1] = value & 0x7f;
 457         /* XXX
 458          * auto set to 0x7e on M_WaitOn, M_Backup
 459          */
 460         break;
 461     case MENELAUS_LDO_CTRL3:
 462         s->ldo[2] = value & 3;
 463         /* XXX
 464          * auto set to 3 on M_Active, nRESWARM
 465          * auto set to 0 on M_WaitOn, M_Backup
 466          */
 467         break;
 468     case MENELAUS_LDO_CTRL4:
 469         s->ldo[3] = value & 3;
 470         /* XXX
 471          * auto set to 3 on M_Active, nRESWARM
 472          * auto set to 0 on M_WaitOn, M_Backup
 473          */
 474         break;
 475     case MENELAUS_LDO_CTRL5:
 476         s->ldo[4] = value & 3;
 477         /* XXX
 478          * auto set to 3 on M_Active, nRESWARM
 479          * auto set to 0 on M_WaitOn, M_Backup
 480          */
 481         break;
 482     case MENELAUS_LDO_CTRL6:
 483         s->ldo[5] = value & 3;
 484         break;
 485     case MENELAUS_LDO_CTRL7:
 486         s->ldo[6] = value & 3;
 487         break;
 488     case MENELAUS_LDO_CTRL8:
 489         s->ldo[7] = value & 3;
 490         break;
 491
 492     case MENELAUS_SLEEP_CTRL2: reg ++;
 493     case MENELAUS_SLEEP_CTRL1:
 494         s->sleep[reg] = value;
 495         break;
 496
 497     case MENELAUS_DEVICE_OFF:
 498         if (value & 1)
 499             menelaus_reset(&s->i2c);
 500         break;
 501
 502     case MENELAUS_OSC_CTRL:
 503         s->osc = value & 7;
 504         break;
 505
 506     case MENELAUS_DETECT_CTRL:
 507         s->detect = value & 0x7f;
 508         break;
 509
 510     case MENELAUS_INT_MASK1:
 511         s->mask &= 0xf00;
 512         s->mask |= value << 0;
 513         menelaus_update(s);
 514         break;
 515     case MENELAUS_INT_MASK2:
 516         s->mask &= 0x0ff;
 517         s->mask |= value << 8;
 518         menelaus_update(s);
 519         break;
 520
 521     case MENELAUS_INT_ACK1:
 522         s->status &= ~(((uint16_t) value) << 0);
 523         menelaus_update(s);
 524         break;
 525     case MENELAUS_INT_ACK2:
 526         s->status &= ~(((uint16_t) value) << 8);
 527         menelaus_update(s);
 528         break;
 529
 530     case MENELAUS_GPIO_CTRL:
 531         for (line = 0; line < 3; line ++) {
 532             if (((s->dir ^ value) >> line) & 1) {
 533                 qemu_set_irq(s->out[line],
 534                              ((s->outputs & ~s->dir) >> line) & 1);
 535             }
 536         }
 537         s->dir = value & 0x67;
 538         break;
 539     case MENELAUS_GPIO_OUT:
 540         for (line = 0; line < 3; line ++) {
 541             if ((((s->outputs ^ value) & ~s->dir) >> line) & 1) {
 542                 qemu_set_irq(s->out[line], (s->outputs >> line) & 1);
 543             }
 544         }
 545         s->outputs = value & 0x07;
 546         break;
 547
 548     case MENELAUS_BBSMS:
 549         s->bbsms = 0x0d;
 550         break;
 551
 552     case MENELAUS_RTC_CTRL:
 553         if ((s->rtc.ctrl ^ value) & 1) {                        /* RTC_EN */
 554             if (value & 1)
 555                 menelaus_rtc_start(s);
 556             else
 557                 menelaus_rtc_stop(s);
 558         }
 559         s->rtc.ctrl = value & 0x1f;
 560         menelaus_alm_update(s);
 561         break;
 562     case MENELAUS_RTC_UPDATE:
 563         menelaus_rtc_update(s);
 564         memcpy(&tm, &s->rtc.tm, sizeof(tm));
 565         switch (value & 0xf) {
 566         case 0:
 567             break;
 568         case 1:
 569             tm.tm_sec = s->rtc.new.tm_sec;
 570             break;
 571         case 2:
 572             tm.tm_min = s->rtc.new.tm_min;
 573             break;
 574         case 3:
 575             if (s->rtc.new.tm_hour > 23)
 576                 goto rtc_badness;
 577             tm.tm_hour = s->rtc.new.tm_hour;
 578             break;
 579         case 4:
 580             if (s->rtc.new.tm_mday < 1)
 581                 goto rtc_badness;
 582             /* TODO check range */
 583             tm.tm_mday = s->rtc.new.tm_mday;
 584             break;
 585         case 5:
 586             if (s->rtc.new.tm_mon < 0 || s->rtc.new.tm_mon > 11)
 587                 goto rtc_badness;
 588             tm.tm_mon = s->rtc.new.tm_mon;
 589             break;
 590         case 6:
 591             tm.tm_year = s->rtc.new.tm_year;
 592             break;
 593         case 7:
 594             /* TODO set .tm_mday instead */
 595             tm.tm_wday = s->rtc.new.tm_wday;
 596             break;
 597         case 8:
 598             if (s->rtc.new.tm_hour > 23)
 599                 goto rtc_badness;
 600             if (s->rtc.new.tm_mday < 1)
 601                 goto rtc_badness;
 602             if (s->rtc.new.tm_mon < 0 || s->rtc.new.tm_mon > 11)
 603                 goto rtc_badness;
 604             tm.tm_sec = s->rtc.new.tm_sec;
 605             tm.tm_min = s->rtc.new.tm_min;
 606             tm.tm_hour = s->rtc.new.tm_hour;
 607             tm.tm_mday = s->rtc.new.tm_mday;
 608             tm.tm_mon = s->rtc.new.tm_mon;
 609             tm.tm_year = s->rtc.new.tm_year;
 610             break;
 611         rtc_badness:
 612         default:
 613             fprintf(stderr, "%s: bad RTC_UPDATE value %02x\n",
 614                             __FUNCTION__, value);
 615             s->status |= 1 << 10;                               /* RTCERR */
 616             menelaus_update(s);
 617         }
 618         s->rtc.sec_offset = qemu_timedate_diff(&tm);
 619         break;
 620     case MENELAUS_RTC_SEC:
 621         s->rtc.tm.tm_sec = from_bcd(value & 0x7f);
 622         break;
 623     case MENELAUS_RTC_MIN:
 624         s->rtc.tm.tm_min = from_bcd(value & 0x7f);
 625         break;
 626     case MENELAUS_RTC_HR:
 627         s->rtc.tm.tm_hour = (s->rtc.ctrl & (1 << 2)) ?  /* MODE12_n24 */
 628                 MIN(from_bcd(value & 0x3f), 12) + ((value >> 7) ? 11 : -1) :
 629                 from_bcd(value & 0x3f);
 630         break;
 631     case MENELAUS_RTC_DAY:
 632         s->rtc.tm.tm_mday = from_bcd(value);
 633         break;
 634     case MENELAUS_RTC_MON:
 635         s->rtc.tm.tm_mon = MAX(1, from_bcd(value)) - 1;
 636         break;
 637     case MENELAUS_RTC_YR:
 638         s->rtc.tm.tm_year = 2000 + from_bcd(value);
 639         break;
 640     case MENELAUS_RTC_WKDAY:
 641         s->rtc.tm.tm_mday = from_bcd(value);
 642         break;
 643     case MENELAUS_RTC_AL_SEC:
 644         s->rtc.alm.tm_sec = from_bcd(value & 0x7f);
 645         menelaus_alm_update(s);
 646         break;
 647     case MENELAUS_RTC_AL_MIN:
 648         s->rtc.alm.tm_min = from_bcd(value & 0x7f);
 649         menelaus_alm_update(s);
 650         break;
 651     case MENELAUS_RTC_AL_HR:
 652         s->rtc.alm.tm_hour = (s->rtc.ctrl & (1 << 2)) ? /* MODE12_n24 */
 653                 MIN(from_bcd(value & 0x3f), 12) + ((value >> 7) ? 11 : -1) :
 654                 from_bcd(value & 0x3f);
 655         menelaus_alm_update(s);
 656         break;
 657     case MENELAUS_RTC_AL_DAY:
 658         s->rtc.alm.tm_mday = from_bcd(value);
 659         menelaus_alm_update(s);
 660         break;
 661     case MENELAUS_RTC_AL_MON:
 662         s->rtc.alm.tm_mon = MAX(1, from_bcd(value)) - 1;
 663         menelaus_alm_update(s);
 664         break;
 665     case MENELAUS_RTC_AL_YR:
 666         s->rtc.alm.tm_year = 2000 + from_bcd(value);
 667         menelaus_alm_update(s);
 668         break;
 669     case MENELAUS_RTC_COMP_MSB:
 670         s->rtc.comp &= 0xff;
 671         s->rtc.comp |= value << 8;
 672         break;
 673     case MENELAUS_RTC_COMP_LSB:
 674         s->rtc.comp &= 0xff << 8;
 675         s->rtc.comp |= value;
 676         break;
 677
 678     case MENELAUS_S1_PULL_EN:
 679         s->pull[0] = value;
 680         break;
 681     case MENELAUS_S1_PULL_DIR:
 682         s->pull[1] = value & 0x1f;
 683         break;
 684     case MENELAUS_S2_PULL_EN:
 685         s->pull[2] = value;
 686         break;
 687     case MENELAUS_S2_PULL_DIR:
 688         s->pull[3] = value & 0x1f;
 689         break;
 690
 691     case MENELAUS_MCT_CTRL1:
 692         s->mmc_ctrl[0] = value & 0x7f;
 693         break;
 694     case MENELAUS_MCT_CTRL2:
 695         s->mmc_ctrl[1] = value;
 696         /* TODO update Card Detect interrupts */
 697         break;
 698     case MENELAUS_MCT_CTRL3:
 699         s->mmc_ctrl[2] = value & 0xf;
 700         break;
 701     case MENELAUS_DEBOUNCE1:
 702         s->mmc_debounce = value & 0x3f;
 703         break;
 704
 705     default:
 706 #ifdef VERBOSE
 707         printf("%s: unknown register %02x\n", __FUNCTION__, addr);
 708 #endif
 709     }
 710 }
 711
 712 static void menelaus_event(i2c_slave *i2c, enum i2c_event event)
 713 {
 714     MenelausState *s = (MenelausState *) i2c;
 715
 716     if (event == I2C_START_SEND)
 717         s->firstbyte = 1;
 718 }
 719
 720 static int menelaus_tx(i2c_slave *i2c, uint8_t data)
 721 {
 722     MenelausState *s = (MenelausState *) i2c;
 723     /* Interpret register address byte */
 724     if (s->firstbyte) {
 725         s->reg = data;
 726         s->firstbyte = 0;
 727     } else
 728         menelaus_write(s, s->reg ++, data);
 729
 730     return 0;
 731 }
 732
 733 static int menelaus_rx(i2c_slave *i2c)
 734 {
 735     MenelausState *s = (MenelausState *) i2c;
 736
 737     return menelaus_read(s, s->reg ++);
 738 }
 739
 740 /* Save restore 32 bit int as uint16_t
 741    This is a Big hack, but it is how the old state did it.
 742    Or we broke compatibility in the state, or we can't use struct tm
 743  */
 744
 745 static int get_int32_as_uint16(QEMUFile *f, void *pv, size_t size)
 746 {
 747     int *v = pv;
 748     *v = qemu_get_be16(f);
 749     return 0;
 750 }
 751
 752 static void put_int32_as_uint16(QEMUFile *f, void *pv, size_t size)
 753 {
 754     int *v = pv;
 755     qemu_put_be16(f, *v);
 756 }
 757
 758 static const VMStateInfo vmstate_hack_int32_as_uint16 = {
 759     .name = "int32_as_uint16",
 760     .get  = get_int32_as_uint16,
 761     .put  = put_int32_as_uint16,
 762 };
 763
 764 #define VMSTATE_UINT16_HACK(_f, _s)                                  \
 765     VMSTATE_SINGLE(_f, _s, 0, vmstate_hack_int32_as_uint16, int32_t)
 766
 767
 768 static const VMStateDescription vmstate_menelaus_tm = {
 769     .name = "menelaus_tm",
 770     .version_id = 0,
 771     .minimum_version_id = 0,
 772     .minimum_version_id_old = 0,
 773     .fields      = (VMStateField []) {
 774         VMSTATE_UINT16_HACK(tm_sec, struct tm),
 775         VMSTATE_UINT16_HACK(tm_min, struct tm),
 776         VMSTATE_UINT16_HACK(tm_hour, struct tm),
 777         VMSTATE_UINT16_HACK(tm_mday, struct tm),
 778         VMSTATE_UINT16_HACK(tm_min, struct tm),
 779         VMSTATE_UINT16_HACK(tm_year, struct tm),
 780         VMSTATE_END_OF_LIST()
 781     }
 782 };
 783
 784 static void menelaus_pre_save(void *opaque)
 785 {
 786     MenelausState *s = opaque;
 787     /* Should be <= 1000 */
 788     s->rtc_next_vmstate =  s->rtc.next - qemu_get_clock_ms(rt_clock);
 789 }
 790
 791 static int menelaus_post_load(void *opaque, int version_id)
 792 {
 793     MenelausState *s = opaque;
 794
 795     if (s->rtc.ctrl & 1)                                        /* RTC_EN */
 796         menelaus_rtc_stop(s);
 797
 798     s->rtc.next = s->rtc_next_vmstate;
 799
 800     menelaus_alm_update(s);
 801     menelaus_update(s);
 802     if (s->rtc.ctrl & 1)                                        /* RTC_EN */
 803         menelaus_rtc_start(s);
 804     return 0;
 805 }
 806
 807 static const VMStateDescription vmstate_menelaus = {
 808     .name = "menelaus",
 809     .version_id = 0,
 810     .minimum_version_id = 0,
 811     .minimum_version_id_old = 0,
 812     .pre_save = menelaus_pre_save,
 813     .post_load = menelaus_post_load,
 814     .fields      = (VMStateField []) {
 815         VMSTATE_INT32(firstbyte, MenelausState),
 816         VMSTATE_UINT8(reg, MenelausState),
 817         VMSTATE_UINT8_ARRAY(vcore, MenelausState, 5),
 818         VMSTATE_UINT8_ARRAY(dcdc, MenelausState, 3),
 819         VMSTATE_UINT8_ARRAY(ldo, MenelausState, 8),
 820         VMSTATE_UINT8_ARRAY(sleep, MenelausState, 2),
 821         VMSTATE_UINT8(osc, MenelausState),
 822         VMSTATE_UINT8(detect, MenelausState),
 823         VMSTATE_UINT16(mask, MenelausState),
 824         VMSTATE_UINT16(status, MenelausState),
 825         VMSTATE_UINT8(dir, MenelausState),
 826         VMSTATE_UINT8(inputs, MenelausState),
 827         VMSTATE_UINT8(outputs, MenelausState),
 828         VMSTATE_UINT8(bbsms, MenelausState),
 829         VMSTATE_UINT8_ARRAY(pull, MenelausState, 4),
 830         VMSTATE_UINT8_ARRAY(mmc_ctrl, MenelausState, 3),
 831         VMSTATE_UINT8(mmc_debounce, MenelausState),
 832         VMSTATE_UINT8(rtc.ctrl, MenelausState),
 833         VMSTATE_UINT16(rtc.comp, MenelausState),
 834         VMSTATE_UINT16(rtc_next_vmstate, MenelausState),
 835         VMSTATE_STRUCT(rtc.new, MenelausState, 0, vmstate_menelaus_tm,
 836                        struct tm),
 837         VMSTATE_STRUCT(rtc.alm, MenelausState, 0, vmstate_menelaus_tm,
 838                        struct tm),
 839         VMSTATE_UINT8(pwrbtn_state, MenelausState),
 840         VMSTATE_I2C_SLAVE(i2c, MenelausState),
 841         VMSTATE_END_OF_LIST()
 842     }
 843 };
 844
 845 static int twl92230_init(i2c_slave *i2c)
 846 {
 847     MenelausState *s = FROM_I2C_SLAVE(MenelausState, i2c);
 848
 849     s->rtc.hz_tm = qemu_new_timer_ms(rt_clock, menelaus_rtc_hz, s);
 850     /* Three output pins plus one interrupt pin.  */
 851     qdev_init_gpio_out(&i2c->qdev, s->out, 4);
 852     qdev_init_gpio_in(&i2c->qdev, menelaus_gpio_set, 3);
 853     s->pwrbtn = qemu_allocate_irqs(menelaus_pwrbtn_set, s, 1)[0];
 854
 855     menelaus_reset(&s->i2c);
 856
 857     return 0;
 858 }
 859
 860 static I2CSlaveInfo twl92230_info = {
 861     .qdev.name ="twl92230",
 862     .qdev.size = sizeof(MenelausState),
 863     .qdev.vmsd = &vmstate_menelaus,
 864     .init = twl92230_init,
 865     .event = menelaus_event,
 866     .recv = menelaus_rx,
 867     .send = menelaus_tx
 868 };
 869
 870 static void twl92230_register_devices(void)
 871 {
 872     i2c_register_slave(&twl92230_info);
 873 }
 874
 875 device_init(twl92230_register_devices)