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
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  */
  23
  24 #include "hw.h"
  25 #include "qemu-timer.h"
  26 #include "i2c.h"
  27 #include "sysemu.h"
  28 #include "console.h"
  29
  30 #define VERBOSE 1
  31
  32 struct menelaus_s {
  33     i2c_slave i2c;
  34     qemu_irq irq;
  35
  36     int firstbyte;
  37     uint8_t reg;
  38
  39     uint8_t vcore[5];
  40     uint8_t dcdc[3];
  41     uint8_t ldo[8];
  42     uint8_t sleep[2];
  43     uint8_t osc;
  44     uint8_t detect;
  45     uint16_t mask;
  46     uint16_t status;
  47     uint8_t dir;
  48     uint8_t inputs;
  49     uint8_t outputs;
  50     uint8_t bbsms;
  51     uint8_t pull[4];
  52     uint8_t mmc_ctrl[3];
  53     uint8_t mmc_debounce;
  54     struct {
  55         uint8_t ctrl;
  56         uint16_t comp;
  57         QEMUTimer *hz;
  58         int64_t next;
  59         struct tm tm;
  60         struct tm new;
  61         struct tm alm;
  62         int sec_offset;
  63         int alm_sec;
  64         int next_comp;
  65         struct tm *(*gettime)(const time_t *timep, struct tm *result);
  66     } rtc;
  67     qemu_irq handler[3];
  68     qemu_irq *in;
  69     int pwrbtn_state;
  70     qemu_irq pwrbtn;
  71 };
  72
  73 static inline void menelaus_update(struct menelaus_s *s)
  74 {
  75     qemu_set_irq(s->irq, s->status & ~s->mask);
  76 }
  77
  78 static inline void menelaus_rtc_start(struct menelaus_s *s)
  79 {
  80     s->rtc.next =+ qemu_get_clock(rt_clock);
  81     qemu_mod_timer(s->rtc.hz, s->rtc.next);
  82 }
  83
  84 static inline void menelaus_rtc_stop(struct menelaus_s *s)
  85 {
  86     qemu_del_timer(s->rtc.hz);
  87     s->rtc.next =- qemu_get_clock(rt_clock);
  88     if (s->rtc.next < 1)
  89         s->rtc.next = 1;
  90 }
  91
  92 static void menelaus_rtc_update(struct menelaus_s *s)
  93 {
  94     qemu_get_timedate(&s->rtc.tm, s->rtc.sec_offset);
  95 }
  96
  97 static void menelaus_alm_update(struct menelaus_s *s)
  98 {
  99     if ((s->rtc.ctrl & 3) == 3)
 100         s->rtc.alm_sec = qemu_timedate_diff(&s->rtc.alm) - s->rtc.sec_offset;
 101 }
 102
 103 static void menelaus_rtc_hz(void *opaque)
 104 {
 105     struct menelaus_s *s = (struct menelaus_s *) opaque;
 106
 107     s->rtc.next_comp --;
 108     s->rtc.alm_sec --;
 109     s->rtc.next += 1000;
 110     qemu_mod_timer(s->rtc.hz, s->rtc.next);
 111     if ((s->rtc.ctrl >> 3) & 3) {                               /* EVERY */
 112         menelaus_rtc_update(s);
 113         if (((s->rtc.ctrl >> 3) & 3) == 1 && !s->rtc.tm.tm_sec)
 114             s->status |= 1 << 8;                                /* RTCTMR */
 115         else if (((s->rtc.ctrl >> 3) & 3) == 2 && !s->rtc.tm.tm_min)
 116             s->status |= 1 << 8;                                /* RTCTMR */
 117         else if (!s->rtc.tm.tm_hour)
 118             s->status |= 1 << 8;                                /* RTCTMR */
 119     } else
 120         s->status |= 1 << 8;                                    /* RTCTMR */
 121     if ((s->rtc.ctrl >> 1) & 1) {                               /* RTC_AL_EN */
 122         if (s->rtc.alm_sec == 0)
 123             s->status |= 1 << 9;                                /* RTCALM */
 124         /* TODO: wake-up */
 125     }
 126     if (s->rtc.next_comp <= 0) {
 127         s->rtc.next -= muldiv64((int16_t) s->rtc.comp, 1000, 0x8000);
 128         s->rtc.next_comp = 3600;
 129     }
 130     menelaus_update(s);
 131 }
 132
 133 void menelaus_reset(i2c_slave *i2c)
 134 {
 135     struct menelaus_s *s = (struct menelaus_s *) i2c;
 136     s->reg = 0x00;
 137
 138     s->vcore[0] = 0x0c; /* XXX: X-loader needs 0x8c? check!  */
 139     s->vcore[1] = 0x05;
 140     s->vcore[2] = 0x02;
 141     s->vcore[3] = 0x0c;
 142     s->vcore[4] = 0x03;
 143     s->dcdc[0] = 0x33;  /* Depends on wiring */
 144     s->dcdc[1] = 0x03;
 145     s->dcdc[2] = 0x00;
 146     s->ldo[0] = 0x95;
 147     s->ldo[1] = 0x7e;
 148     s->ldo[2] = 0x00;
 149     s->ldo[3] = 0x00;   /* Depends on wiring */
 150     s->ldo[4] = 0x03;   /* Depends on wiring */
 151     s->ldo[5] = 0x00;
 152     s->ldo[6] = 0x00;
 153     s->ldo[7] = 0x00;
 154     s->sleep[0] = 0x00;
 155     s->sleep[1] = 0x00;
 156     s->osc = 0x01;
 157     s->detect = 0x09;
 158     s->mask = 0x0fff;
 159     s->status = 0;
 160     s->dir = 0x07;
 161     s->outputs = 0x00;
 162     s->bbsms = 0x00;
 163     s->pull[0] = 0x00;
 164     s->pull[1] = 0x00;
 165     s->pull[2] = 0x00;
 166     s->pull[3] = 0x00;
 167     s->mmc_ctrl[0] = 0x03;
 168     s->mmc_ctrl[1] = 0xc0;
 169     s->mmc_ctrl[2] = 0x00;
 170     s->mmc_debounce = 0x05;
 171
 172     if (s->rtc.ctrl & 1)
 173         menelaus_rtc_stop(s);
 174     s->rtc.ctrl = 0x00;
 175     s->rtc.comp = 0x0000;
 176     s->rtc.next = 1000;
 177     s->rtc.sec_offset = 0;
 178     s->rtc.next_comp = 1800;
 179     s->rtc.alm_sec = 1800;
 180     s->rtc.alm.tm_sec = 0x00;
 181     s->rtc.alm.tm_min = 0x00;
 182     s->rtc.alm.tm_hour = 0x00;
 183     s->rtc.alm.tm_mday = 0x01;
 184     s->rtc.alm.tm_mon = 0x00;
 185     s->rtc.alm.tm_year = 2004;
 186     menelaus_update(s);
 187 }
 188
 189 static inline uint8_t to_bcd(int val)
 190 {
 191     return ((val / 10) << 4) | (val % 10);
 192 }
 193
 194 static inline int from_bcd(uint8_t val)
 195 {
 196     return ((val >> 4) * 10) + (val & 0x0f);
 197 }
 198
 199 static void menelaus_gpio_set(void *opaque, int line, int level)
 200 {
 201     struct menelaus_s *s = (struct menelaus_s *) opaque;
 202
 203     /* No interrupt generated */
 204     s->inputs &= ~(1 << line);
 205     s->inputs |= level << line;
 206 }
 207
 208 static void menelaus_pwrbtn_set(void *opaque, int line, int level)
 209 {
 210     struct menelaus_s *s = (struct menelaus_s *) opaque;
 211
 212     if (!s->pwrbtn_state && level) {
 213         s->status |= 1 << 11;                                   /* PSHBTN */
 214         menelaus_update(s);
 215     }
 216     s->pwrbtn_state = level;
 217 }
 218
 219 #define MENELAUS_REV            0x01
 220 #define MENELAUS_VCORE_CTRL1    0x02
 221 #define MENELAUS_VCORE_CTRL2    0x03
 222 #define MENELAUS_VCORE_CTRL3    0x04
 223 #define MENELAUS_VCORE_CTRL4    0x05
 224 #define MENELAUS_VCORE_CTRL5    0x06
 225 #define MENELAUS_DCDC_CTRL1     0x07
 226 #define MENELAUS_DCDC_CTRL2     0x08
 227 #define MENELAUS_DCDC_CTRL3     0x09
 228 #define MENELAUS_LDO_CTRL1      0x0a
 229 #define MENELAUS_LDO_CTRL2      0x0b
 230 #define MENELAUS_LDO_CTRL3      0x0c
 231 #define MENELAUS_LDO_CTRL4      0x0d
 232 #define MENELAUS_LDO_CTRL5      0x0e
 233 #define MENELAUS_LDO_CTRL6      0x0f
 234 #define MENELAUS_LDO_CTRL7      0x10
 235 #define MENELAUS_LDO_CTRL8      0x11
 236 #define MENELAUS_SLEEP_CTRL1    0x12
 237 #define MENELAUS_SLEEP_CTRL2    0x13
 238 #define MENELAUS_DEVICE_OFF     0x14
 239 #define MENELAUS_OSC_CTRL       0x15
 240 #define MENELAUS_DETECT_CTRL    0x16
 241 #define MENELAUS_INT_MASK1      0x17
 242 #define MENELAUS_INT_MASK2      0x18
 243 #define MENELAUS_INT_STATUS1    0x19
 244 #define MENELAUS_INT_STATUS2    0x1a
 245 #define MENELAUS_INT_ACK1       0x1b
 246 #define MENELAUS_INT_ACK2       0x1c
 247 #define MENELAUS_GPIO_CTRL      0x1d
 248 #define MENELAUS_GPIO_IN        0x1e
 249 #define MENELAUS_GPIO_OUT       0x1f
 250 #define MENELAUS_BBSMS          0x20
 251 #define MENELAUS_RTC_CTRL       0x21
 252 #define MENELAUS_RTC_UPDATE     0x22
 253 #define MENELAUS_RTC_SEC        0x23
 254 #define MENELAUS_RTC_MIN        0x24
 255 #define MENELAUS_RTC_HR         0x25
 256 #define MENELAUS_RTC_DAY        0x26
 257 #define MENELAUS_RTC_MON        0x27
 258 #define MENELAUS_RTC_YR         0x28
 259 #define MENELAUS_RTC_WKDAY      0x29
 260 #define MENELAUS_RTC_AL_SEC     0x2a
 261 #define MENELAUS_RTC_AL_MIN     0x2b
 262 #define MENELAUS_RTC_AL_HR      0x2c
 263 #define MENELAUS_RTC_AL_DAY     0x2d
 264 #define MENELAUS_RTC_AL_MON     0x2e
 265 #define MENELAUS_RTC_AL_YR      0x2f
 266 #define MENELAUS_RTC_COMP_MSB   0x30
 267 #define MENELAUS_RTC_COMP_LSB   0x31
 268 #define MENELAUS_S1_PULL_EN     0x32
 269 #define MENELAUS_S1_PULL_DIR    0x33
 270 #define MENELAUS_S2_PULL_EN     0x34
 271 #define MENELAUS_S2_PULL_DIR    0x35
 272 #define MENELAUS_MCT_CTRL1      0x36
 273 #define MENELAUS_MCT_CTRL2      0x37
 274 #define MENELAUS_MCT_CTRL3      0x38
 275 #define MENELAUS_MCT_PIN_ST     0x39
 276 #define MENELAUS_DEBOUNCE1      0x3a
 277
 278 static uint8_t menelaus_read(void *opaque, uint8_t addr)
 279 {
 280     struct menelaus_s *s = (struct menelaus_s *) opaque;
 281     int reg = 0;
 282
 283     switch (addr) {
 284     case MENELAUS_REV:
 285         return 0x22;
 286
 287     case MENELAUS_VCORE_CTRL5: reg ++;
 288     case MENELAUS_VCORE_CTRL4: reg ++;
 289     case MENELAUS_VCORE_CTRL3: reg ++;
 290     case MENELAUS_VCORE_CTRL2: reg ++;
 291     case MENELAUS_VCORE_CTRL1:
 292         return s->vcore[reg];
 293
 294     case MENELAUS_DCDC_CTRL3: reg ++;
 295     case MENELAUS_DCDC_CTRL2: reg ++;
 296     case MENELAUS_DCDC_CTRL1:
 297         return s->dcdc[reg];
 298
 299     case MENELAUS_LDO_CTRL8: reg ++;
 300     case MENELAUS_LDO_CTRL7: reg ++;
 301     case MENELAUS_LDO_CTRL6: reg ++;
 302     case MENELAUS_LDO_CTRL5: reg ++;
 303     case MENELAUS_LDO_CTRL4: reg ++;
 304     case MENELAUS_LDO_CTRL3: reg ++;
 305     case MENELAUS_LDO_CTRL2: reg ++;
 306     case MENELAUS_LDO_CTRL1:
 307         return s->ldo[reg];
 308
 309     case MENELAUS_SLEEP_CTRL2: reg ++;
 310     case MENELAUS_SLEEP_CTRL1:
 311         return s->sleep[reg];
 312
 313     case MENELAUS_DEVICE_OFF:
 314         return 0;
 315
 316     case MENELAUS_OSC_CTRL:
 317         return s->osc | (1 << 7);                       /* CLK32K_GOOD */
 318
 319     case MENELAUS_DETECT_CTRL:
 320         return s->detect;
 321
 322     case MENELAUS_INT_MASK1:
 323         return (s->mask >> 0) & 0xff;
 324     case MENELAUS_INT_MASK2:
 325         return (s->mask >> 8) & 0xff;
 326
 327     case MENELAUS_INT_STATUS1:
 328         return (s->status >> 0) & 0xff;
 329     case MENELAUS_INT_STATUS2:
 330         return (s->status >> 8) & 0xff;
 331
 332     case MENELAUS_INT_ACK1:
 333     case MENELAUS_INT_ACK2:
 334         return 0;
 335
 336     case MENELAUS_GPIO_CTRL:
 337         return s->dir;
 338     case MENELAUS_GPIO_IN:
 339         return s->inputs | (~s->dir & s->outputs);
 340     case MENELAUS_GPIO_OUT:
 341         return s->outputs;
 342
 343     case MENELAUS_BBSMS:
 344         return s->bbsms;
 345
 346     case MENELAUS_RTC_CTRL:
 347         return s->rtc.ctrl;
 348     case MENELAUS_RTC_UPDATE:
 349         return 0x00;
 350     case MENELAUS_RTC_SEC:
 351         menelaus_rtc_update(s);
 352         return to_bcd(s->rtc.tm.tm_sec);
 353     case MENELAUS_RTC_MIN:
 354         menelaus_rtc_update(s);
 355         return to_bcd(s->rtc.tm.tm_min);
 356     case MENELAUS_RTC_HR:
 357         menelaus_rtc_update(s);
 358         if ((s->rtc.ctrl >> 2) & 1)                     /* MODE12_n24 */
 359             return to_bcd((s->rtc.tm.tm_hour % 12) + 1) |
 360                     (!!(s->rtc.tm.tm_hour >= 12) << 7); /* PM_nAM */
 361         else
 362             return to_bcd(s->rtc.tm.tm_hour);
 363     case MENELAUS_RTC_DAY:
 364         menelaus_rtc_update(s);
 365         return to_bcd(s->rtc.tm.tm_mday);
 366     case MENELAUS_RTC_MON:
 367         menelaus_rtc_update(s);
 368         return to_bcd(s->rtc.tm.tm_mon + 1);
 369     case MENELAUS_RTC_YR:
 370         menelaus_rtc_update(s);
 371         return to_bcd(s->rtc.tm.tm_year - 2000);
 372     case MENELAUS_RTC_WKDAY:
 373         menelaus_rtc_update(s);
 374         return to_bcd(s->rtc.tm.tm_wday);
 375     case MENELAUS_RTC_AL_SEC:
 376         return to_bcd(s->rtc.alm.tm_sec);
 377     case MENELAUS_RTC_AL_MIN:
 378         return to_bcd(s->rtc.alm.tm_min);
 379     case MENELAUS_RTC_AL_HR:
 380         if ((s->rtc.ctrl >> 2) & 1)                     /* MODE12_n24 */
 381             return to_bcd((s->rtc.alm.tm_hour % 12) + 1) |
 382                     (!!(s->rtc.alm.tm_hour >= 12) << 7);/* AL_PM_nAM */
 383         else
 384             return to_bcd(s->rtc.alm.tm_hour);
 385     case MENELAUS_RTC_AL_DAY:
 386         return to_bcd(s->rtc.alm.tm_mday);
 387     case MENELAUS_RTC_AL_MON:
 388         return to_bcd(s->rtc.alm.tm_mon + 1);
 389     case MENELAUS_RTC_AL_YR:
 390         return to_bcd(s->rtc.alm.tm_year - 2000);
 391     case MENELAUS_RTC_COMP_MSB:
 392         return (s->rtc.comp >> 8) & 0xff;
 393     case MENELAUS_RTC_COMP_LSB:
 394         return (s->rtc.comp >> 0) & 0xff;
 395
 396     case MENELAUS_S1_PULL_EN:
 397         return s->pull[0];
 398     case MENELAUS_S1_PULL_DIR:
 399         return s->pull[1];
 400     case MENELAUS_S2_PULL_EN:
 401         return s->pull[2];
 402     case MENELAUS_S2_PULL_DIR:
 403         return s->pull[3];
 404
 405     case MENELAUS_MCT_CTRL3: reg ++;
 406     case MENELAUS_MCT_CTRL2: reg ++;
 407     case MENELAUS_MCT_CTRL1:
 408         return s->mmc_ctrl[reg];
 409     case MENELAUS_MCT_PIN_ST:
 410         /* TODO: return the real Card Detect */
 411         return 0;
 412     case MENELAUS_DEBOUNCE1:
 413         return s->mmc_debounce;
 414
 415     default:
 416 #ifdef VERBOSE
 417         printf("%s: unknown register %02x\n", __FUNCTION__, addr);
 418 #endif
 419         break;
 420     }
 421     return 0;
 422 }
 423
 424 static void menelaus_write(void *opaque, uint8_t addr, uint8_t value)
 425 {
 426     struct menelaus_s *s = (struct menelaus_s *) opaque;
 427     int line;
 428     int reg = 0;
 429     struct tm tm;
 430
 431     switch (addr) {
 432     case MENELAUS_VCORE_CTRL1:
 433         s->vcore[0] = (value & 0xe) | MIN(value & 0x1f, 0x12);
 434         break;
 435     case MENELAUS_VCORE_CTRL2:
 436         s->vcore[1] = value;
 437         break;
 438     case MENELAUS_VCORE_CTRL3:
 439         s->vcore[2] = MIN(value & 0x1f, 0x12);
 440         break;
 441     case MENELAUS_VCORE_CTRL4:
 442         s->vcore[3] = MIN(value & 0x1f, 0x12);
 443         break;
 444     case MENELAUS_VCORE_CTRL5:
 445         s->vcore[4] = value & 3;
 446         /* XXX
 447          * auto set to 3 on M_Active, nRESWARM
 448          * auto set to 0 on M_WaitOn, M_Backup
 449          */
 450         break;
 451
 452     case MENELAUS_DCDC_CTRL1:
 453         s->dcdc[0] = value & 0x3f;
 454         break;
 455     case MENELAUS_DCDC_CTRL2:
 456         s->dcdc[1] = value & 0x07;
 457         /* XXX
 458          * auto set to 3 on M_Active, nRESWARM
 459          * auto set to 0 on M_WaitOn, M_Backup
 460          */
 461         break;
 462     case MENELAUS_DCDC_CTRL3:
 463         s->dcdc[2] = value & 0x07;
 464         break;
 465
 466     case MENELAUS_LDO_CTRL1:
 467         s->ldo[0] = value;
 468         break;
 469     case MENELAUS_LDO_CTRL2:
 470         s->ldo[1] = value & 0x7f;
 471         /* XXX
 472          * auto set to 0x7e on M_WaitOn, M_Backup
 473          */
 474         break;
 475     case MENELAUS_LDO_CTRL3:
 476         s->ldo[2] = 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_CTRL4:
 483         s->ldo[3] = value & 3;
 484         /* XXX
 485          * auto set to 3 on M_Active, nRESWARM
 486          * auto set to 0 on M_WaitOn, M_Backup
 487          */
 488         break;
 489     case MENELAUS_LDO_CTRL5:
 490         s->ldo[4] = value & 3;
 491         /* XXX
 492          * auto set to 3 on M_Active, nRESWARM
 493          * auto set to 0 on M_WaitOn, M_Backup
 494          */
 495         break;
 496     case MENELAUS_LDO_CTRL6:
 497         s->ldo[5] = value & 3;
 498         break;
 499     case MENELAUS_LDO_CTRL7:
 500         s->ldo[6] = value & 3;
 501         break;
 502     case MENELAUS_LDO_CTRL8:
 503         s->ldo[7] = value & 3;
 504         break;
 505
 506     case MENELAUS_SLEEP_CTRL2: reg ++;
 507     case MENELAUS_SLEEP_CTRL1:
 508         s->sleep[reg] = value;
 509         break;
 510
 511     case MENELAUS_DEVICE_OFF:
 512         if (value & 1)
 513             menelaus_reset(&s->i2c);
 514         break;
 515
 516     case MENELAUS_OSC_CTRL:
 517         s->osc = value & 7;
 518         break;
 519
 520     case MENELAUS_DETECT_CTRL:
 521         s->detect = value & 0x7f;
 522         break;
 523
 524     case MENELAUS_INT_MASK1:
 525         s->mask &= 0xf00;
 526         s->mask |= value << 0;
 527         menelaus_update(s);
 528         break;
 529     case MENELAUS_INT_MASK2:
 530         s->mask &= 0x0ff;
 531         s->mask |= value << 8;
 532         menelaus_update(s);
 533         break;
 534
 535     case MENELAUS_INT_ACK1:
 536         s->status &= ~(((uint16_t) value) << 0);
 537         menelaus_update(s);
 538         break;
 539     case MENELAUS_INT_ACK2:
 540         s->status &= ~(((uint16_t) value) << 8);
 541         menelaus_update(s);
 542         break;
 543
 544     case MENELAUS_GPIO_CTRL:
 545         for (line = 0; line < 3; line ++)
 546             if (((s->dir ^ value) >> line) & 1)
 547                 if (s->handler[line])
 548                     qemu_set_irq(s->handler[line],
 549                                     ((s->outputs & ~s->dir) >> line) & 1);
 550         s->dir = value & 0x67;
 551         break;
 552     case MENELAUS_GPIO_OUT:
 553         for (line = 0; line < 3; line ++)
 554             if ((((s->outputs ^ value) & ~s->dir) >> line) & 1)
 555                 if (s->handler[line])
 556                     qemu_set_irq(s->handler[line], (s->outputs >> line) & 1);
 557         s->outputs = value & 0x07;
 558         break;
 559
 560     case MENELAUS_BBSMS:
 561         s->bbsms = 0x0d;
 562         break;
 563
 564     case MENELAUS_RTC_CTRL:
 565         if ((s->rtc.ctrl ^ value) & 1) {                        /* RTC_EN */
 566             if (value & 1)
 567                 menelaus_rtc_start(s);
 568             else
 569                 menelaus_rtc_stop(s);
 570         }
 571         s->rtc.ctrl = value & 0x1f;
 572         menelaus_alm_update(s);
 573         break;
 574     case MENELAUS_RTC_UPDATE:
 575         menelaus_rtc_update(s);
 576         memcpy(&tm, &s->rtc.tm, sizeof(tm));
 577         switch (value & 0xf) {
 578         case 0:
 579             break;
 580         case 1:
 581             tm.tm_sec = s->rtc.new.tm_sec;
 582             break;
 583         case 2:
 584             tm.tm_min = s->rtc.new.tm_min;
 585             break;
 586         case 3:
 587             if (s->rtc.new.tm_hour > 23)
 588                 goto rtc_badness;
 589             tm.tm_hour = s->rtc.new.tm_hour;
 590             break;
 591         case 4:
 592             if (s->rtc.new.tm_mday < 1)
 593                 goto rtc_badness;
 594             /* TODO check range */
 595             tm.tm_mday = s->rtc.new.tm_mday;
 596             break;
 597         case 5:
 598             if (s->rtc.new.tm_mon < 0 || s->rtc.new.tm_mon > 11)
 599                 goto rtc_badness;
 600             tm.tm_mon = s->rtc.new.tm_mon;
 601             break;
 602         case 6:
 603             tm.tm_year = s->rtc.new.tm_year;
 604             break;
 605         case 7:
 606             /* TODO set .tm_mday instead */
 607             tm.tm_wday = s->rtc.new.tm_wday;
 608             break;
 609         case 8:
 610             if (s->rtc.new.tm_hour > 23)
 611                 goto rtc_badness;
 612             if (s->rtc.new.tm_mday < 1)
 613                 goto rtc_badness;
 614             if (s->rtc.new.tm_mon < 0 || s->rtc.new.tm_mon > 11)
 615                 goto rtc_badness;
 616             tm.tm_sec = s->rtc.new.tm_sec;
 617             tm.tm_min = s->rtc.new.tm_min;
 618             tm.tm_hour = s->rtc.new.tm_hour;
 619             tm.tm_mday = s->rtc.new.tm_mday;
 620             tm.tm_mon = s->rtc.new.tm_mon;
 621             tm.tm_year = s->rtc.new.tm_year;
 622             break;
 623         rtc_badness:
 624         default:
 625             fprintf(stderr, "%s: bad RTC_UPDATE value %02x\n",
 626                             __FUNCTION__, value);
 627             s->status |= 1 << 10;                               /* RTCERR */
 628             menelaus_update(s);
 629         }
 630         s->rtc.sec_offset = qemu_timedate_diff(&tm);
 631         break;
 632     case MENELAUS_RTC_SEC:
 633         s->rtc.tm.tm_sec = from_bcd(value & 0x7f);
 634         break;
 635     case MENELAUS_RTC_MIN:
 636         s->rtc.tm.tm_min = from_bcd(value & 0x7f);
 637         break;
 638     case MENELAUS_RTC_HR:
 639         s->rtc.tm.tm_hour = (s->rtc.ctrl & (1 << 2)) ?  /* MODE12_n24 */
 640                 MIN(from_bcd(value & 0x3f), 12) + ((value >> 7) ? 11 : -1) :
 641                 from_bcd(value & 0x3f);
 642         break;
 643     case MENELAUS_RTC_DAY:
 644         s->rtc.tm.tm_mday = from_bcd(value);
 645         break;
 646     case MENELAUS_RTC_MON:
 647         s->rtc.tm.tm_mon = MAX(1, from_bcd(value)) - 1;
 648         break;
 649     case MENELAUS_RTC_YR:
 650         s->rtc.tm.tm_year = 2000 + from_bcd(value);
 651         break;
 652     case MENELAUS_RTC_WKDAY:
 653         s->rtc.tm.tm_mday = from_bcd(value);
 654         break;
 655     case MENELAUS_RTC_AL_SEC:
 656         s->rtc.alm.tm_sec = from_bcd(value & 0x7f);
 657         menelaus_alm_update(s);
 658         break;
 659     case MENELAUS_RTC_AL_MIN:
 660         s->rtc.alm.tm_min = from_bcd(value & 0x7f);
 661         menelaus_alm_update(s);
 662         break;
 663     case MENELAUS_RTC_AL_HR:
 664         s->rtc.alm.tm_hour = (s->rtc.ctrl & (1 << 2)) ? /* MODE12_n24 */
 665                 MIN(from_bcd(value & 0x3f), 12) + ((value >> 7) ? 11 : -1) :
 666                 from_bcd(value & 0x3f);
 667         menelaus_alm_update(s);
 668         break;
 669     case MENELAUS_RTC_AL_DAY:
 670         s->rtc.alm.tm_mday = from_bcd(value);
 671         menelaus_alm_update(s);
 672         break;
 673     case MENELAUS_RTC_AL_MON:
 674         s->rtc.alm.tm_mon = MAX(1, from_bcd(value)) - 1;
 675         menelaus_alm_update(s);
 676         break;
 677     case MENELAUS_RTC_AL_YR:
 678         s->rtc.alm.tm_year = 2000 + from_bcd(value);
 679         menelaus_alm_update(s);
 680         break;
 681     case MENELAUS_RTC_COMP_MSB:
 682         s->rtc.comp &= 0xff;
 683         s->rtc.comp |= value << 8;
 684         break;
 685     case MENELAUS_RTC_COMP_LSB:
 686         s->rtc.comp &= 0xff << 8;
 687         s->rtc.comp |= value;
 688         break;
 689
 690     case MENELAUS_S1_PULL_EN:
 691         s->pull[0] = value;
 692         break;
 693     case MENELAUS_S1_PULL_DIR:
 694         s->pull[1] = value & 0x1f;
 695         break;
 696     case MENELAUS_S2_PULL_EN:
 697         s->pull[2] = value;
 698         break;
 699     case MENELAUS_S2_PULL_DIR:
 700         s->pull[3] = value & 0x1f;
 701         break;
 702
 703     case MENELAUS_MCT_CTRL1:
 704         s->mmc_ctrl[0] = value & 0x7f;
 705         break;
 706     case MENELAUS_MCT_CTRL2:
 707         s->mmc_ctrl[1] = value;
 708         /* TODO update Card Detect interrupts */
 709         break;
 710     case MENELAUS_MCT_CTRL3:
 711         s->mmc_ctrl[2] = value & 0xf;
 712         break;
 713     case MENELAUS_DEBOUNCE1:
 714         s->mmc_debounce = value & 0x3f;
 715         break;
 716
 717     default:
 718 #ifdef VERBOSE
 719         printf("%s: unknown register %02x\n", __FUNCTION__, addr);
 720 #endif
 721     }
 722 }
 723
 724 static void menelaus_event(i2c_slave *i2c, enum i2c_event event)
 725 {
 726     struct menelaus_s *s = (struct menelaus_s *) i2c;
 727
 728     if (event == I2C_START_SEND)
 729         s->firstbyte = 1;
 730 }
 731
 732 static int menelaus_tx(i2c_slave *i2c, uint8_t data)
 733 {
 734     struct menelaus_s *s = (struct menelaus_s *) i2c;
 735     /* Interpret register address byte */
 736     if (s->firstbyte) {
 737         s->reg = data;
 738         s->firstbyte = 0;
 739     } else
 740         menelaus_write(s, s->reg ++, data);
 741
 742     return 0;
 743 }
 744
 745 static int menelaus_rx(i2c_slave *i2c)
 746 {
 747     struct menelaus_s *s = (struct menelaus_s *) i2c;
 748
 749     return menelaus_read(s, s->reg ++);
 750 }
 751
 752 static void tm_put(QEMUFile *f, struct tm *tm) {
 753     qemu_put_be16(f, tm->tm_sec);
 754     qemu_put_be16(f, tm->tm_min);
 755     qemu_put_be16(f, tm->tm_hour);
 756     qemu_put_be16(f, tm->tm_mday);
 757     qemu_put_be16(f, tm->tm_min);
 758     qemu_put_be16(f, tm->tm_year);
 759 }
 760
 761 static void tm_get(QEMUFile *f, struct tm *tm) {
 762     tm->tm_sec = qemu_get_be16(f);
 763     tm->tm_min = qemu_get_be16(f);
 764     tm->tm_hour = qemu_get_be16(f);
 765     tm->tm_mday = qemu_get_be16(f);
 766     tm->tm_min = qemu_get_be16(f);
 767     tm->tm_year = qemu_get_be16(f);
 768 }
 769
 770 static void menelaus_save(QEMUFile *f, void *opaque)
 771 {
 772     struct menelaus_s *s = (struct menelaus_s *) opaque;
 773
 774     qemu_put_be32(f, s->firstbyte);
 775     qemu_put_8s(f, &s->reg);
 776
 777     qemu_put_8s(f, &s->vcore[0]);
 778     qemu_put_8s(f, &s->vcore[1]);
 779     qemu_put_8s(f, &s->vcore[2]);
 780     qemu_put_8s(f, &s->vcore[3]);
 781     qemu_put_8s(f, &s->vcore[4]);
 782     qemu_put_8s(f, &s->dcdc[3]);
 783     qemu_put_8s(f, &s->dcdc[3]);
 784     qemu_put_8s(f, &s->dcdc[3]);
 785     qemu_put_8s(f, &s->ldo[0]);
 786     qemu_put_8s(f, &s->ldo[1]);
 787     qemu_put_8s(f, &s->ldo[2]);
 788     qemu_put_8s(f, &s->ldo[3]);
 789     qemu_put_8s(f, &s->ldo[4]);
 790     qemu_put_8s(f, &s->ldo[5]);
 791     qemu_put_8s(f, &s->ldo[6]);
 792     qemu_put_8s(f, &s->ldo[7]);
 793     qemu_put_8s(f, &s->sleep[0]);
 794     qemu_put_8s(f, &s->sleep[1]);
 795     qemu_put_8s(f, &s->osc);
 796     qemu_put_8s(f, &s->detect);
 797     qemu_put_be16s(f, &s->mask);
 798     qemu_put_be16s(f, &s->status);
 799     qemu_put_8s(f, &s->dir);
 800     qemu_put_8s(f, &s->inputs);
 801     qemu_put_8s(f, &s->outputs);
 802     qemu_put_8s(f, &s->bbsms);
 803     qemu_put_8s(f, &s->pull[0]);
 804     qemu_put_8s(f, &s->pull[1]);
 805     qemu_put_8s(f, &s->pull[2]);
 806     qemu_put_8s(f, &s->pull[3]);
 807     qemu_put_8s(f, &s->mmc_ctrl[0]);
 808     qemu_put_8s(f, &s->mmc_ctrl[1]);
 809     qemu_put_8s(f, &s->mmc_ctrl[2]);
 810     qemu_put_8s(f, &s->mmc_debounce);
 811     qemu_put_8s(f, &s->rtc.ctrl);
 812     qemu_put_be16s(f, &s->rtc.comp);
 813     /* Should be <= 1000 */
 814     qemu_put_be16(f, s->rtc.next - qemu_get_clock(rt_clock));
 815     tm_put(f, &s->rtc.new);
 816     tm_put(f, &s->rtc.alm);
 817     qemu_put_byte(f, s->pwrbtn_state);
 818
 819     i2c_slave_save(f, &s->i2c);
 820 }
 821
 822 static int menelaus_load(QEMUFile *f, void *opaque, int version_id)
 823 {
 824     struct menelaus_s *s = (struct menelaus_s *) opaque;
 825
 826     s->firstbyte = qemu_get_be32(f);
 827     qemu_get_8s(f, &s->reg);
 828
 829     if (s->rtc.ctrl & 1)                                        /* RTC_EN */
 830         menelaus_rtc_stop(s);
 831     qemu_get_8s(f, &s->vcore[0]);
 832     qemu_get_8s(f, &s->vcore[1]);
 833     qemu_get_8s(f, &s->vcore[2]);
 834     qemu_get_8s(f, &s->vcore[3]);
 835     qemu_get_8s(f, &s->vcore[4]);
 836     qemu_get_8s(f, &s->dcdc[3]);
 837     qemu_get_8s(f, &s->dcdc[3]);
 838     qemu_get_8s(f, &s->dcdc[3]);
 839     qemu_get_8s(f, &s->ldo[0]);
 840     qemu_get_8s(f, &s->ldo[1]);
 841     qemu_get_8s(f, &s->ldo[2]);
 842     qemu_get_8s(f, &s->ldo[3]);
 843     qemu_get_8s(f, &s->ldo[4]);
 844     qemu_get_8s(f, &s->ldo[5]);
 845     qemu_get_8s(f, &s->ldo[6]);
 846     qemu_get_8s(f, &s->ldo[7]);
 847     qemu_get_8s(f, &s->sleep[0]);
 848     qemu_get_8s(f, &s->sleep[1]);
 849     qemu_get_8s(f, &s->osc);
 850     qemu_get_8s(f, &s->detect);
 851     qemu_get_be16s(f, &s->mask);
 852     qemu_get_be16s(f, &s->status);
 853     qemu_get_8s(f, &s->dir);
 854     qemu_get_8s(f, &s->inputs);
 855     qemu_get_8s(f, &s->outputs);
 856     qemu_get_8s(f, &s->bbsms);
 857     qemu_get_8s(f, &s->pull[0]);
 858     qemu_get_8s(f, &s->pull[1]);
 859     qemu_get_8s(f, &s->pull[2]);
 860     qemu_get_8s(f, &s->pull[3]);
 861     qemu_get_8s(f, &s->mmc_ctrl[0]);
 862     qemu_get_8s(f, &s->mmc_ctrl[1]);
 863     qemu_get_8s(f, &s->mmc_ctrl[2]);
 864     qemu_get_8s(f, &s->mmc_debounce);
 865     qemu_get_8s(f, &s->rtc.ctrl);
 866     qemu_get_be16s(f, &s->rtc.comp);
 867     s->rtc.next = qemu_get_be16(f);
 868     tm_get(f, &s->rtc.new);
 869     tm_get(f, &s->rtc.alm);
 870     s->pwrbtn_state = qemu_get_byte(f);
 871     menelaus_alm_update(s);
 872     menelaus_update(s);
 873     if (s->rtc.ctrl & 1)                                        /* RTC_EN */
 874         menelaus_rtc_start(s);
 875
 876     i2c_slave_load(f, &s->i2c);
 877     return 0;
 878 }
 879
 880 static int menelaus_iid = 0;
 881
 882 i2c_slave *twl92230_init(i2c_bus *bus, qemu_irq irq)
 883 {
 884     struct menelaus_s *s = (struct menelaus_s *)
 885             i2c_slave_init(bus, 0, sizeof(struct menelaus_s));
 886
 887     s->i2c.event = menelaus_event;
 888     s->i2c.recv = menelaus_rx;
 889     s->i2c.send = menelaus_tx;
 890
 891     s->irq = irq;
 892     s->rtc.hz = qemu_new_timer(rt_clock, menelaus_rtc_hz, s);
 893     s->in = qemu_allocate_irqs(menelaus_gpio_set, s, 3);
 894     s->pwrbtn = qemu_allocate_irqs(menelaus_pwrbtn_set, s, 1)[0];
 895
 896     menelaus_reset(&s->i2c);
 897
 898     register_savevm("menelaus", menelaus_iid ++,
 899                     0, menelaus_save, menelaus_load, s);
 900
 901     return &s->i2c;
 902 }
 903
 904 qemu_irq *twl92230_gpio_in_get(i2c_slave *i2c)
 905 {
 906     struct menelaus_s *s = (struct menelaus_s *) i2c;
 907
 908     return s->in;
 909 }
 910
 911 void twl92230_gpio_out_set(i2c_slave *i2c, int line, qemu_irq handler)
 912 {
 913     struct menelaus_s *s = (struct menelaus_s *) i2c;
 914
 915     if (line >= 3 || line < 0) {
 916         fprintf(stderr, "%s: No GPO line %i\n", __FUNCTION__, line);
 917         exit(-1);
 918     }
 919     s->handler[line] = handler;
 920 }