tests/tcg: Do not require FE_* exception bits
[qemu.git] / hw / rtc / 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 "qemu/osdep.h"
23 #include "qemu-common.h"
24 #include "qemu/timer.h"
25 #include "hw/i2c/i2c.h"
26 #include "hw/irq.h"
27 #include "migration/qemu-file-types.h"
28 #include "migration/vmstate.h"
29 #include "sysemu/sysemu.h"
30 #include "qemu/bcd.h"
31 #include "qemu/module.h"
32
33 #define VERBOSE 1
34
35 #define TYPE_TWL92230 "twl92230"
36 #define TWL92230(obj) OBJECT_CHECK(MenelausState, (obj), TYPE_TWL92230)
37
38 typedef struct MenelausState {
39 I2CSlave parent_obj;
40
41 int firstbyte;
42 uint8_t reg;
43
44 uint8_t vcore[5];
45 uint8_t dcdc[3];
46 uint8_t ldo[8];
47 uint8_t sleep[2];
48 uint8_t osc;
49 uint8_t detect;
50 uint16_t mask;
51 uint16_t status;
52 uint8_t dir;
53 uint8_t inputs;
54 uint8_t outputs;
55 uint8_t bbsms;
56 uint8_t pull[4];
57 uint8_t mmc_ctrl[3];
58 uint8_t mmc_debounce;
59 struct {
60 uint8_t ctrl;
61 uint16_t comp;
62 QEMUTimer *hz_tm;
63 int64_t next;
64 struct tm tm;
65 struct tm new;
66 struct tm alm;
67 int sec_offset;
68 int alm_sec;
69 int next_comp;
70 } rtc;
71 uint16_t rtc_next_vmstate;
72 qemu_irq out[4];
73 uint8_t pwrbtn_state;
74 } MenelausState;
75
76 static inline void menelaus_update(MenelausState *s)
77 {
78 qemu_set_irq(s->out[3], s->status & ~s->mask);
79 }
80
81 static inline void menelaus_rtc_start(MenelausState *s)
82 {
83 s->rtc.next += qemu_clock_get_ms(rtc_clock);
84 timer_mod(s->rtc.hz_tm, s->rtc.next);
85 }
86
87 static inline void menelaus_rtc_stop(MenelausState *s)
88 {
89 timer_del(s->rtc.hz_tm);
90 s->rtc.next -= qemu_clock_get_ms(rtc_clock);
91 if (s->rtc.next < 1)
92 s->rtc.next = 1;
93 }
94
95 static void menelaus_rtc_update(MenelausState *s)
96 {
97 qemu_get_timedate(&s->rtc.tm, s->rtc.sec_offset);
98 }
99
100 static void menelaus_alm_update(MenelausState *s)
101 {
102 if ((s->rtc.ctrl & 3) == 3)
103 s->rtc.alm_sec = qemu_timedate_diff(&s->rtc.alm) - s->rtc.sec_offset;
104 }
105
106 static void menelaus_rtc_hz(void *opaque)
107 {
108 MenelausState *s = (MenelausState *) opaque;
109
110 s->rtc.next_comp --;
111 s->rtc.alm_sec --;
112 s->rtc.next += 1000;
113 timer_mod(s->rtc.hz_tm, s->rtc.next);
114 if ((s->rtc.ctrl >> 3) & 3) { /* EVERY */
115 menelaus_rtc_update(s);
116 if (((s->rtc.ctrl >> 3) & 3) == 1 && !s->rtc.tm.tm_sec)
117 s->status |= 1 << 8; /* RTCTMR */
118 else if (((s->rtc.ctrl >> 3) & 3) == 2 && !s->rtc.tm.tm_min)
119 s->status |= 1 << 8; /* RTCTMR */
120 else if (!s->rtc.tm.tm_hour)
121 s->status |= 1 << 8; /* RTCTMR */
122 } else
123 s->status |= 1 << 8; /* RTCTMR */
124 if ((s->rtc.ctrl >> 1) & 1) { /* RTC_AL_EN */
125 if (s->rtc.alm_sec == 0)
126 s->status |= 1 << 9; /* RTCALM */
127 /* TODO: wake-up */
128 }
129 if (s->rtc.next_comp <= 0) {
130 s->rtc.next -= muldiv64((int16_t) s->rtc.comp, 1000, 0x8000);
131 s->rtc.next_comp = 3600;
132 }
133 menelaus_update(s);
134 }
135
136 static void menelaus_reset(I2CSlave *i2c)
137 {
138 MenelausState *s = TWL92230(i2c);
139
140 s->reg = 0x00;
141
142 s->vcore[0] = 0x0c; /* XXX: X-loader needs 0x8c? check! */
143 s->vcore[1] = 0x05;
144 s->vcore[2] = 0x02;
145 s->vcore[3] = 0x0c;
146 s->vcore[4] = 0x03;
147 s->dcdc[0] = 0x33; /* Depends on wiring */
148 s->dcdc[1] = 0x03;
149 s->dcdc[2] = 0x00;
150 s->ldo[0] = 0x95;
151 s->ldo[1] = 0x7e;
152 s->ldo[2] = 0x00;
153 s->ldo[3] = 0x00; /* Depends on wiring */
154 s->ldo[4] = 0x03; /* Depends on wiring */
155 s->ldo[5] = 0x00;
156 s->ldo[6] = 0x00;
157 s->ldo[7] = 0x00;
158 s->sleep[0] = 0x00;
159 s->sleep[1] = 0x00;
160 s->osc = 0x01;
161 s->detect = 0x09;
162 s->mask = 0x0fff;
163 s->status = 0;
164 s->dir = 0x07;
165 s->outputs = 0x00;
166 s->bbsms = 0x00;
167 s->pull[0] = 0x00;
168 s->pull[1] = 0x00;
169 s->pull[2] = 0x00;
170 s->pull[3] = 0x00;
171 s->mmc_ctrl[0] = 0x03;
172 s->mmc_ctrl[1] = 0xc0;
173 s->mmc_ctrl[2] = 0x00;
174 s->mmc_debounce = 0x05;
175
176 if (s->rtc.ctrl & 1)
177 menelaus_rtc_stop(s);
178 s->rtc.ctrl = 0x00;
179 s->rtc.comp = 0x0000;
180 s->rtc.next = 1000;
181 s->rtc.sec_offset = 0;
182 s->rtc.next_comp = 1800;
183 s->rtc.alm_sec = 1800;
184 s->rtc.alm.tm_sec = 0x00;
185 s->rtc.alm.tm_min = 0x00;
186 s->rtc.alm.tm_hour = 0x00;
187 s->rtc.alm.tm_mday = 0x01;
188 s->rtc.alm.tm_mon = 0x00;
189 s->rtc.alm.tm_year = 2004;
190 menelaus_update(s);
191 }
192
193 static void menelaus_gpio_set(void *opaque, int line, int level)
194 {
195 MenelausState *s = (MenelausState *) opaque;
196
197 if (line < 3) {
198 /* No interrupt generated */
199 s->inputs &= ~(1 << line);
200 s->inputs |= level << line;
201 return;
202 }
203
204 if (!s->pwrbtn_state && level) {
205 s->status |= 1 << 11; /* PSHBTN */
206 menelaus_update(s);
207 }
208 s->pwrbtn_state = level;
209 }
210
211 #define MENELAUS_REV 0x01
212 #define MENELAUS_VCORE_CTRL1 0x02
213 #define MENELAUS_VCORE_CTRL2 0x03
214 #define MENELAUS_VCORE_CTRL3 0x04
215 #define MENELAUS_VCORE_CTRL4 0x05
216 #define MENELAUS_VCORE_CTRL5 0x06
217 #define MENELAUS_DCDC_CTRL1 0x07
218 #define MENELAUS_DCDC_CTRL2 0x08
219 #define MENELAUS_DCDC_CTRL3 0x09
220 #define MENELAUS_LDO_CTRL1 0x0a
221 #define MENELAUS_LDO_CTRL2 0x0b
222 #define MENELAUS_LDO_CTRL3 0x0c
223 #define MENELAUS_LDO_CTRL4 0x0d
224 #define MENELAUS_LDO_CTRL5 0x0e
225 #define MENELAUS_LDO_CTRL6 0x0f
226 #define MENELAUS_LDO_CTRL7 0x10
227 #define MENELAUS_LDO_CTRL8 0x11
228 #define MENELAUS_SLEEP_CTRL1 0x12
229 #define MENELAUS_SLEEP_CTRL2 0x13
230 #define MENELAUS_DEVICE_OFF 0x14
231 #define MENELAUS_OSC_CTRL 0x15
232 #define MENELAUS_DETECT_CTRL 0x16
233 #define MENELAUS_INT_MASK1 0x17
234 #define MENELAUS_INT_MASK2 0x18
235 #define MENELAUS_INT_STATUS1 0x19
236 #define MENELAUS_INT_STATUS2 0x1a
237 #define MENELAUS_INT_ACK1 0x1b
238 #define MENELAUS_INT_ACK2 0x1c
239 #define MENELAUS_GPIO_CTRL 0x1d
240 #define MENELAUS_GPIO_IN 0x1e
241 #define MENELAUS_GPIO_OUT 0x1f
242 #define MENELAUS_BBSMS 0x20
243 #define MENELAUS_RTC_CTRL 0x21
244 #define MENELAUS_RTC_UPDATE 0x22
245 #define MENELAUS_RTC_SEC 0x23
246 #define MENELAUS_RTC_MIN 0x24
247 #define MENELAUS_RTC_HR 0x25
248 #define MENELAUS_RTC_DAY 0x26
249 #define MENELAUS_RTC_MON 0x27
250 #define MENELAUS_RTC_YR 0x28
251 #define MENELAUS_RTC_WKDAY 0x29
252 #define MENELAUS_RTC_AL_SEC 0x2a
253 #define MENELAUS_RTC_AL_MIN 0x2b
254 #define MENELAUS_RTC_AL_HR 0x2c
255 #define MENELAUS_RTC_AL_DAY 0x2d
256 #define MENELAUS_RTC_AL_MON 0x2e
257 #define MENELAUS_RTC_AL_YR 0x2f
258 #define MENELAUS_RTC_COMP_MSB 0x30
259 #define MENELAUS_RTC_COMP_LSB 0x31
260 #define MENELAUS_S1_PULL_EN 0x32
261 #define MENELAUS_S1_PULL_DIR 0x33
262 #define MENELAUS_S2_PULL_EN 0x34
263 #define MENELAUS_S2_PULL_DIR 0x35
264 #define MENELAUS_MCT_CTRL1 0x36
265 #define MENELAUS_MCT_CTRL2 0x37
266 #define MENELAUS_MCT_CTRL3 0x38
267 #define MENELAUS_MCT_PIN_ST 0x39
268 #define MENELAUS_DEBOUNCE1 0x3a
269
270 static uint8_t menelaus_read(void *opaque, uint8_t addr)
271 {
272 MenelausState *s = (MenelausState *) opaque;
273 int reg = 0;
274
275 switch (addr) {
276 case MENELAUS_REV:
277 return 0x22;
278
279 case MENELAUS_VCORE_CTRL5: reg ++;
280 case MENELAUS_VCORE_CTRL4: reg ++;
281 case MENELAUS_VCORE_CTRL3: reg ++;
282 case MENELAUS_VCORE_CTRL2: reg ++;
283 case MENELAUS_VCORE_CTRL1:
284 return s->vcore[reg];
285
286 case MENELAUS_DCDC_CTRL3: reg ++;
287 case MENELAUS_DCDC_CTRL2: reg ++;
288 case MENELAUS_DCDC_CTRL1:
289 return s->dcdc[reg];
290
291 case MENELAUS_LDO_CTRL8: reg ++;
292 case MENELAUS_LDO_CTRL7: reg ++;
293 case MENELAUS_LDO_CTRL6: reg ++;
294 case MENELAUS_LDO_CTRL5: reg ++;
295 case MENELAUS_LDO_CTRL4: reg ++;
296 case MENELAUS_LDO_CTRL3: reg ++;
297 case MENELAUS_LDO_CTRL2: reg ++;
298 case MENELAUS_LDO_CTRL1:
299 return s->ldo[reg];
300
301 case MENELAUS_SLEEP_CTRL2: reg ++;
302 case MENELAUS_SLEEP_CTRL1:
303 return s->sleep[reg];
304
305 case MENELAUS_DEVICE_OFF:
306 return 0;
307
308 case MENELAUS_OSC_CTRL:
309 return s->osc | (1 << 7); /* CLK32K_GOOD */
310
311 case MENELAUS_DETECT_CTRL:
312 return s->detect;
313
314 case MENELAUS_INT_MASK1:
315 return (s->mask >> 0) & 0xff;
316 case MENELAUS_INT_MASK2:
317 return (s->mask >> 8) & 0xff;
318
319 case MENELAUS_INT_STATUS1:
320 return (s->status >> 0) & 0xff;
321 case MENELAUS_INT_STATUS2:
322 return (s->status >> 8) & 0xff;
323
324 case MENELAUS_INT_ACK1:
325 case MENELAUS_INT_ACK2:
326 return 0;
327
328 case MENELAUS_GPIO_CTRL:
329 return s->dir;
330 case MENELAUS_GPIO_IN:
331 return s->inputs | (~s->dir & s->outputs);
332 case MENELAUS_GPIO_OUT:
333 return s->outputs;
334
335 case MENELAUS_BBSMS:
336 return s->bbsms;
337
338 case MENELAUS_RTC_CTRL:
339 return s->rtc.ctrl;
340 case MENELAUS_RTC_UPDATE:
341 return 0x00;
342 case MENELAUS_RTC_SEC:
343 menelaus_rtc_update(s);
344 return to_bcd(s->rtc.tm.tm_sec);
345 case MENELAUS_RTC_MIN:
346 menelaus_rtc_update(s);
347 return to_bcd(s->rtc.tm.tm_min);
348 case MENELAUS_RTC_HR:
349 menelaus_rtc_update(s);
350 if ((s->rtc.ctrl >> 2) & 1) /* MODE12_n24 */
351 return to_bcd((s->rtc.tm.tm_hour % 12) + 1) |
352 (!!(s->rtc.tm.tm_hour >= 12) << 7); /* PM_nAM */
353 else
354 return to_bcd(s->rtc.tm.tm_hour);
355 case MENELAUS_RTC_DAY:
356 menelaus_rtc_update(s);
357 return to_bcd(s->rtc.tm.tm_mday);
358 case MENELAUS_RTC_MON:
359 menelaus_rtc_update(s);
360 return to_bcd(s->rtc.tm.tm_mon + 1);
361 case MENELAUS_RTC_YR:
362 menelaus_rtc_update(s);
363 return to_bcd(s->rtc.tm.tm_year - 2000);
364 case MENELAUS_RTC_WKDAY:
365 menelaus_rtc_update(s);
366 return to_bcd(s->rtc.tm.tm_wday);
367 case MENELAUS_RTC_AL_SEC:
368 return to_bcd(s->rtc.alm.tm_sec);
369 case MENELAUS_RTC_AL_MIN:
370 return to_bcd(s->rtc.alm.tm_min);
371 case MENELAUS_RTC_AL_HR:
372 if ((s->rtc.ctrl >> 2) & 1) /* MODE12_n24 */
373 return to_bcd((s->rtc.alm.tm_hour % 12) + 1) |
374 (!!(s->rtc.alm.tm_hour >= 12) << 7);/* AL_PM_nAM */
375 else
376 return to_bcd(s->rtc.alm.tm_hour);
377 case MENELAUS_RTC_AL_DAY:
378 return to_bcd(s->rtc.alm.tm_mday);
379 case MENELAUS_RTC_AL_MON:
380 return to_bcd(s->rtc.alm.tm_mon + 1);
381 case MENELAUS_RTC_AL_YR:
382 return to_bcd(s->rtc.alm.tm_year - 2000);
383 case MENELAUS_RTC_COMP_MSB:
384 return (s->rtc.comp >> 8) & 0xff;
385 case MENELAUS_RTC_COMP_LSB:
386 return (s->rtc.comp >> 0) & 0xff;
387
388 case MENELAUS_S1_PULL_EN:
389 return s->pull[0];
390 case MENELAUS_S1_PULL_DIR:
391 return s->pull[1];
392 case MENELAUS_S2_PULL_EN:
393 return s->pull[2];
394 case MENELAUS_S2_PULL_DIR:
395 return s->pull[3];
396
397 case MENELAUS_MCT_CTRL3: reg ++;
398 case MENELAUS_MCT_CTRL2: reg ++;
399 case MENELAUS_MCT_CTRL1:
400 return s->mmc_ctrl[reg];
401 case MENELAUS_MCT_PIN_ST:
402 /* TODO: return the real Card Detect */
403 return 0;
404 case MENELAUS_DEBOUNCE1:
405 return s->mmc_debounce;
406
407 default:
408 #ifdef VERBOSE
409 printf("%s: unknown register %02x\n", __func__, addr);
410 #endif
411 break;
412 }
413 return 0;
414 }
415
416 static void menelaus_write(void *opaque, uint8_t addr, uint8_t value)
417 {
418 MenelausState *s = (MenelausState *) opaque;
419 int line;
420 int reg = 0;
421 struct tm tm;
422
423 switch (addr) {
424 case MENELAUS_VCORE_CTRL1:
425 s->vcore[0] = (value & 0xe) | MIN(value & 0x1f, 0x12);
426 break;
427 case MENELAUS_VCORE_CTRL2:
428 s->vcore[1] = value;
429 break;
430 case MENELAUS_VCORE_CTRL3:
431 s->vcore[2] = MIN(value & 0x1f, 0x12);
432 break;
433 case MENELAUS_VCORE_CTRL4:
434 s->vcore[3] = MIN(value & 0x1f, 0x12);
435 break;
436 case MENELAUS_VCORE_CTRL5:
437 s->vcore[4] = value & 3;
438 /* XXX
439 * auto set to 3 on M_Active, nRESWARM
440 * auto set to 0 on M_WaitOn, M_Backup
441 */
442 break;
443
444 case MENELAUS_DCDC_CTRL1:
445 s->dcdc[0] = value & 0x3f;
446 break;
447 case MENELAUS_DCDC_CTRL2:
448 s->dcdc[1] = value & 0x07;
449 /* XXX
450 * auto set to 3 on M_Active, nRESWARM
451 * auto set to 0 on M_WaitOn, M_Backup
452 */
453 break;
454 case MENELAUS_DCDC_CTRL3:
455 s->dcdc[2] = value & 0x07;
456 break;
457
458 case MENELAUS_LDO_CTRL1:
459 s->ldo[0] = value;
460 break;
461 case MENELAUS_LDO_CTRL2:
462 s->ldo[1] = value & 0x7f;
463 /* XXX
464 * auto set to 0x7e on M_WaitOn, M_Backup
465 */
466 break;
467 case MENELAUS_LDO_CTRL3:
468 s->ldo[2] = value & 3;
469 /* XXX
470 * auto set to 3 on M_Active, nRESWARM
471 * auto set to 0 on M_WaitOn, M_Backup
472 */
473 break;
474 case MENELAUS_LDO_CTRL4:
475 s->ldo[3] = value & 3;
476 /* XXX
477 * auto set to 3 on M_Active, nRESWARM
478 * auto set to 0 on M_WaitOn, M_Backup
479 */
480 break;
481 case MENELAUS_LDO_CTRL5:
482 s->ldo[4] = value & 3;
483 /* XXX
484 * auto set to 3 on M_Active, nRESWARM
485 * auto set to 0 on M_WaitOn, M_Backup
486 */
487 break;
488 case MENELAUS_LDO_CTRL6:
489 s->ldo[5] = value & 3;
490 break;
491 case MENELAUS_LDO_CTRL7:
492 s->ldo[6] = value & 3;
493 break;
494 case MENELAUS_LDO_CTRL8:
495 s->ldo[7] = value & 3;
496 break;
497
498 case MENELAUS_SLEEP_CTRL2: reg ++;
499 case MENELAUS_SLEEP_CTRL1:
500 s->sleep[reg] = value;
501 break;
502
503 case MENELAUS_DEVICE_OFF:
504 if (value & 1) {
505 menelaus_reset(I2C_SLAVE(s));
506 }
507 break;
508
509 case MENELAUS_OSC_CTRL:
510 s->osc = value & 7;
511 break;
512
513 case MENELAUS_DETECT_CTRL:
514 s->detect = value & 0x7f;
515 break;
516
517 case MENELAUS_INT_MASK1:
518 s->mask &= 0xf00;
519 s->mask |= value << 0;
520 menelaus_update(s);
521 break;
522 case MENELAUS_INT_MASK2:
523 s->mask &= 0x0ff;
524 s->mask |= value << 8;
525 menelaus_update(s);
526 break;
527
528 case MENELAUS_INT_ACK1:
529 s->status &= ~(((uint16_t) value) << 0);
530 menelaus_update(s);
531 break;
532 case MENELAUS_INT_ACK2:
533 s->status &= ~(((uint16_t) value) << 8);
534 menelaus_update(s);
535 break;
536
537 case MENELAUS_GPIO_CTRL:
538 for (line = 0; line < 3; line ++) {
539 if (((s->dir ^ value) >> line) & 1) {
540 qemu_set_irq(s->out[line],
541 ((s->outputs & ~s->dir) >> line) & 1);
542 }
543 }
544 s->dir = value & 0x67;
545 break;
546 case MENELAUS_GPIO_OUT:
547 for (line = 0; line < 3; line ++) {
548 if ((((s->outputs ^ value) & ~s->dir) >> line) & 1) {
549 qemu_set_irq(s->out[line], (s->outputs >> line) & 1);
550 }
551 }
552 s->outputs = value & 0x07;
553 break;
554
555 case MENELAUS_BBSMS:
556 s->bbsms = 0x0d;
557 break;
558
559 case MENELAUS_RTC_CTRL:
560 if ((s->rtc.ctrl ^ value) & 1) { /* RTC_EN */
561 if (value & 1)
562 menelaus_rtc_start(s);
563 else
564 menelaus_rtc_stop(s);
565 }
566 s->rtc.ctrl = value & 0x1f;
567 menelaus_alm_update(s);
568 break;
569 case MENELAUS_RTC_UPDATE:
570 menelaus_rtc_update(s);
571 memcpy(&tm, &s->rtc.tm, sizeof(tm));
572 switch (value & 0xf) {
573 case 0:
574 break;
575 case 1:
576 tm.tm_sec = s->rtc.new.tm_sec;
577 break;
578 case 2:
579 tm.tm_min = s->rtc.new.tm_min;
580 break;
581 case 3:
582 if (s->rtc.new.tm_hour > 23)
583 goto rtc_badness;
584 tm.tm_hour = s->rtc.new.tm_hour;
585 break;
586 case 4:
587 if (s->rtc.new.tm_mday < 1)
588 goto rtc_badness;
589 /* TODO check range */
590 tm.tm_mday = s->rtc.new.tm_mday;
591 break;
592 case 5:
593 if (s->rtc.new.tm_mon < 0 || s->rtc.new.tm_mon > 11)
594 goto rtc_badness;
595 tm.tm_mon = s->rtc.new.tm_mon;
596 break;
597 case 6:
598 tm.tm_year = s->rtc.new.tm_year;
599 break;
600 case 7:
601 /* TODO set .tm_mday instead */
602 tm.tm_wday = s->rtc.new.tm_wday;
603 break;
604 case 8:
605 if (s->rtc.new.tm_hour > 23)
606 goto rtc_badness;
607 if (s->rtc.new.tm_mday < 1)
608 goto rtc_badness;
609 if (s->rtc.new.tm_mon < 0 || s->rtc.new.tm_mon > 11)
610 goto rtc_badness;
611 tm.tm_sec = s->rtc.new.tm_sec;
612 tm.tm_min = s->rtc.new.tm_min;
613 tm.tm_hour = s->rtc.new.tm_hour;
614 tm.tm_mday = s->rtc.new.tm_mday;
615 tm.tm_mon = s->rtc.new.tm_mon;
616 tm.tm_year = s->rtc.new.tm_year;
617 break;
618 rtc_badness:
619 default:
620 fprintf(stderr, "%s: bad RTC_UPDATE value %02x\n",
621 __func__, value);
622 s->status |= 1 << 10; /* RTCERR */
623 menelaus_update(s);
624 }
625 s->rtc.sec_offset = qemu_timedate_diff(&tm);
626 break;
627 case MENELAUS_RTC_SEC:
628 s->rtc.tm.tm_sec = from_bcd(value & 0x7f);
629 break;
630 case MENELAUS_RTC_MIN:
631 s->rtc.tm.tm_min = from_bcd(value & 0x7f);
632 break;
633 case MENELAUS_RTC_HR:
634 s->rtc.tm.tm_hour = (s->rtc.ctrl & (1 << 2)) ? /* MODE12_n24 */
635 MIN(from_bcd(value & 0x3f), 12) + ((value >> 7) ? 11 : -1) :
636 from_bcd(value & 0x3f);
637 break;
638 case MENELAUS_RTC_DAY:
639 s->rtc.tm.tm_mday = from_bcd(value);
640 break;
641 case MENELAUS_RTC_MON:
642 s->rtc.tm.tm_mon = MAX(1, from_bcd(value)) - 1;
643 break;
644 case MENELAUS_RTC_YR:
645 s->rtc.tm.tm_year = 2000 + from_bcd(value);
646 break;
647 case MENELAUS_RTC_WKDAY:
648 s->rtc.tm.tm_mday = from_bcd(value);
649 break;
650 case MENELAUS_RTC_AL_SEC:
651 s->rtc.alm.tm_sec = from_bcd(value & 0x7f);
652 menelaus_alm_update(s);
653 break;
654 case MENELAUS_RTC_AL_MIN:
655 s->rtc.alm.tm_min = from_bcd(value & 0x7f);
656 menelaus_alm_update(s);
657 break;
658 case MENELAUS_RTC_AL_HR:
659 s->rtc.alm.tm_hour = (s->rtc.ctrl & (1 << 2)) ? /* MODE12_n24 */
660 MIN(from_bcd(value & 0x3f), 12) + ((value >> 7) ? 11 : -1) :
661 from_bcd(value & 0x3f);
662 menelaus_alm_update(s);
663 break;
664 case MENELAUS_RTC_AL_DAY:
665 s->rtc.alm.tm_mday = from_bcd(value);
666 menelaus_alm_update(s);
667 break;
668 case MENELAUS_RTC_AL_MON:
669 s->rtc.alm.tm_mon = MAX(1, from_bcd(value)) - 1;
670 menelaus_alm_update(s);
671 break;
672 case MENELAUS_RTC_AL_YR:
673 s->rtc.alm.tm_year = 2000 + from_bcd(value);
674 menelaus_alm_update(s);
675 break;
676 case MENELAUS_RTC_COMP_MSB:
677 s->rtc.comp &= 0xff;
678 s->rtc.comp |= value << 8;
679 break;
680 case MENELAUS_RTC_COMP_LSB:
681 s->rtc.comp &= 0xff << 8;
682 s->rtc.comp |= value;
683 break;
684
685 case MENELAUS_S1_PULL_EN:
686 s->pull[0] = value;
687 break;
688 case MENELAUS_S1_PULL_DIR:
689 s->pull[1] = value & 0x1f;
690 break;
691 case MENELAUS_S2_PULL_EN:
692 s->pull[2] = value;
693 break;
694 case MENELAUS_S2_PULL_DIR:
695 s->pull[3] = value & 0x1f;
696 break;
697
698 case MENELAUS_MCT_CTRL1:
699 s->mmc_ctrl[0] = value & 0x7f;
700 break;
701 case MENELAUS_MCT_CTRL2:
702 s->mmc_ctrl[1] = value;
703 /* TODO update Card Detect interrupts */
704 break;
705 case MENELAUS_MCT_CTRL3:
706 s->mmc_ctrl[2] = value & 0xf;
707 break;
708 case MENELAUS_DEBOUNCE1:
709 s->mmc_debounce = value & 0x3f;
710 break;
711
712 default:
713 #ifdef VERBOSE
714 printf("%s: unknown register %02x\n", __func__, addr);
715 #endif
716 }
717 }
718
719 static int menelaus_event(I2CSlave *i2c, enum i2c_event event)
720 {
721 MenelausState *s = TWL92230(i2c);
722
723 if (event == I2C_START_SEND)
724 s->firstbyte = 1;
725
726 return 0;
727 }
728
729 static int menelaus_tx(I2CSlave *i2c, uint8_t data)
730 {
731 MenelausState *s = TWL92230(i2c);
732
733 /* Interpret register address byte */
734 if (s->firstbyte) {
735 s->reg = data;
736 s->firstbyte = 0;
737 } else
738 menelaus_write(s, s->reg ++, data);
739
740 return 0;
741 }
742
743 static uint8_t menelaus_rx(I2CSlave *i2c)
744 {
745 MenelausState *s = TWL92230(i2c);
746
747 return menelaus_read(s, s->reg ++);
748 }
749
750 /* Save restore 32 bit int as uint16_t
751 This is a Big hack, but it is how the old state did it.
752 Or we broke compatibility in the state, or we can't use struct tm
753 */
754
755 static int get_int32_as_uint16(QEMUFile *f, void *pv, size_t size,
756 const VMStateField *field)
757 {
758 int *v = pv;
759 *v = qemu_get_be16(f);
760 return 0;
761 }
762
763 static int put_int32_as_uint16(QEMUFile *f, void *pv, size_t size,
764 const VMStateField *field, QJSON *vmdesc)
765 {
766 int *v = pv;
767 qemu_put_be16(f, *v);
768
769 return 0;
770 }
771
772 static const VMStateInfo vmstate_hack_int32_as_uint16 = {
773 .name = "int32_as_uint16",
774 .get = get_int32_as_uint16,
775 .put = put_int32_as_uint16,
776 };
777
778 #define VMSTATE_UINT16_HACK(_f, _s) \
779 VMSTATE_SINGLE(_f, _s, 0, vmstate_hack_int32_as_uint16, int32_t)
780
781
782 static const VMStateDescription vmstate_menelaus_tm = {
783 .name = "menelaus_tm",
784 .version_id = 0,
785 .minimum_version_id = 0,
786 .fields = (VMStateField[]) {
787 VMSTATE_UINT16_HACK(tm_sec, struct tm),
788 VMSTATE_UINT16_HACK(tm_min, struct tm),
789 VMSTATE_UINT16_HACK(tm_hour, struct tm),
790 VMSTATE_UINT16_HACK(tm_mday, struct tm),
791 VMSTATE_UINT16_HACK(tm_min, struct tm),
792 VMSTATE_UINT16_HACK(tm_year, struct tm),
793 VMSTATE_END_OF_LIST()
794 }
795 };
796
797 static int menelaus_pre_save(void *opaque)
798 {
799 MenelausState *s = opaque;
800 /* Should be <= 1000 */
801 s->rtc_next_vmstate = s->rtc.next - qemu_clock_get_ms(rtc_clock);
802
803 return 0;
804 }
805
806 static int menelaus_post_load(void *opaque, int version_id)
807 {
808 MenelausState *s = opaque;
809
810 if (s->rtc.ctrl & 1) /* RTC_EN */
811 menelaus_rtc_stop(s);
812
813 s->rtc.next = s->rtc_next_vmstate;
814
815 menelaus_alm_update(s);
816 menelaus_update(s);
817 if (s->rtc.ctrl & 1) /* RTC_EN */
818 menelaus_rtc_start(s);
819 return 0;
820 }
821
822 static const VMStateDescription vmstate_menelaus = {
823 .name = "menelaus",
824 .version_id = 0,
825 .minimum_version_id = 0,
826 .pre_save = menelaus_pre_save,
827 .post_load = menelaus_post_load,
828 .fields = (VMStateField[]) {
829 VMSTATE_INT32(firstbyte, MenelausState),
830 VMSTATE_UINT8(reg, MenelausState),
831 VMSTATE_UINT8_ARRAY(vcore, MenelausState, 5),
832 VMSTATE_UINT8_ARRAY(dcdc, MenelausState, 3),
833 VMSTATE_UINT8_ARRAY(ldo, MenelausState, 8),
834 VMSTATE_UINT8_ARRAY(sleep, MenelausState, 2),
835 VMSTATE_UINT8(osc, MenelausState),
836 VMSTATE_UINT8(detect, MenelausState),
837 VMSTATE_UINT16(mask, MenelausState),
838 VMSTATE_UINT16(status, MenelausState),
839 VMSTATE_UINT8(dir, MenelausState),
840 VMSTATE_UINT8(inputs, MenelausState),
841 VMSTATE_UINT8(outputs, MenelausState),
842 VMSTATE_UINT8(bbsms, MenelausState),
843 VMSTATE_UINT8_ARRAY(pull, MenelausState, 4),
844 VMSTATE_UINT8_ARRAY(mmc_ctrl, MenelausState, 3),
845 VMSTATE_UINT8(mmc_debounce, MenelausState),
846 VMSTATE_UINT8(rtc.ctrl, MenelausState),
847 VMSTATE_UINT16(rtc.comp, MenelausState),
848 VMSTATE_UINT16(rtc_next_vmstate, MenelausState),
849 VMSTATE_STRUCT(rtc.new, MenelausState, 0, vmstate_menelaus_tm,
850 struct tm),
851 VMSTATE_STRUCT(rtc.alm, MenelausState, 0, vmstate_menelaus_tm,
852 struct tm),
853 VMSTATE_UINT8(pwrbtn_state, MenelausState),
854 VMSTATE_I2C_SLAVE(parent_obj, MenelausState),
855 VMSTATE_END_OF_LIST()
856 }
857 };
858
859 static void twl92230_realize(DeviceState *dev, Error **errp)
860 {
861 MenelausState *s = TWL92230(dev);
862
863 s->rtc.hz_tm = timer_new_ms(rtc_clock, menelaus_rtc_hz, s);
864 /* Three output pins plus one interrupt pin. */
865 qdev_init_gpio_out(dev, s->out, 4);
866
867 /* Three input pins plus one power-button pin. */
868 qdev_init_gpio_in(dev, menelaus_gpio_set, 4);
869
870 menelaus_reset(I2C_SLAVE(dev));
871 }
872
873 static void twl92230_class_init(ObjectClass *klass, void *data)
874 {
875 DeviceClass *dc = DEVICE_CLASS(klass);
876 I2CSlaveClass *sc = I2C_SLAVE_CLASS(klass);
877
878 dc->realize = twl92230_realize;
879 sc->event = menelaus_event;
880 sc->recv = menelaus_rx;
881 sc->send = menelaus_tx;
882 dc->vmsd = &vmstate_menelaus;
883 }
884
885 static const TypeInfo twl92230_info = {
886 .name = TYPE_TWL92230,
887 .parent = TYPE_I2C_SLAVE,
888 .instance_size = sizeof(MenelausState),
889 .class_init = twl92230_class_init,
890 };
891
892 static void twl92230_register_types(void)
893 {
894 type_register_static(&twl92230_info);
895 }
896
897 type_init(twl92230_register_types)