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ARM: dma-mapping: Set arm_dma_set_mask() for iommu->set_dma_mask()
[linux-2.6.git] / drivers / mfd / max8925-core.c
blobe32466e865b92134b0d2355c7ff721198945bb0b
1 /*
2 * Base driver for Maxim MAX8925
3 *
4 * Copyright (C) 2009-2010 Marvell International Ltd.
5 * Haojian Zhuang <haojian.zhuang@marvell.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11
12 #include <linux/kernel.h>
13 #include <linux/module.h>
14 #include <linux/i2c.h>
15 #include <linux/irq.h>
16 #include <linux/interrupt.h>
17 #include <linux/platform_device.h>
18 #include <linux/regulator/machine.h>
19 #include <linux/mfd/core.h>
20 #include <linux/mfd/max8925.h>
21
22 static struct resource bk_resources[] = {
23 { 0x84, 0x84, "mode control", IORESOURCE_REG, },
24 { 0x85, 0x85, "control", IORESOURCE_REG, },
25 };
26
27 static struct mfd_cell bk_devs[] = {
28 {
29 .name = "max8925-backlight",
30 .num_resources = ARRAY_SIZE(bk_resources),
31 .resources = &bk_resources[0],
32 .id = -1,
33 },
34 };
35
36 static struct resource touch_resources[] = {
37 {
38 .name = "max8925-tsc",
39 .start = MAX8925_TSC_IRQ,
40 .end = MAX8925_ADC_RES_END,
41 .flags = IORESOURCE_REG,
42 },
43 };
44
45 static struct mfd_cell touch_devs[] = {
46 {
47 .name = "max8925-touch",
48 .num_resources = 1,
49 .resources = &touch_resources[0],
50 .id = -1,
51 },
52 };
53
54 static struct resource power_supply_resources[] = {
55 {
56 .name = "max8925-power",
57 .start = MAX8925_CHG_IRQ1,
58 .end = MAX8925_CHG_IRQ1_MASK,
59 .flags = IORESOURCE_REG,
60 },
61 };
62
63 static struct mfd_cell power_devs[] = {
64 {
65 .name = "max8925-power",
66 .num_resources = 1,
67 .resources = &power_supply_resources[0],
68 .id = -1,
69 },
70 };
71
72 static struct resource rtc_resources[] = {
73 {
74 .name = "max8925-rtc",
75 .start = MAX8925_IRQ_RTC_ALARM0,
76 .end = MAX8925_IRQ_RTC_ALARM0,
77 .flags = IORESOURCE_IRQ,
78 },
79 };
80
81 static struct mfd_cell rtc_devs[] = {
82 {
83 .name = "max8925-rtc",
84 .num_resources = 1,
85 .resources = &rtc_resources[0],
86 .id = -1,
87 },
88 };
89
90 static struct resource onkey_resources[] = {
91 {
92 .name = "max8925-onkey",
93 .start = MAX8925_IRQ_GPM_SW_R,
94 .end = MAX8925_IRQ_GPM_SW_R,
95 .flags = IORESOURCE_IRQ,
96 }, {
97 .name = "max8925-onkey",
98 .start = MAX8925_IRQ_GPM_SW_F,
99 .end = MAX8925_IRQ_GPM_SW_F,
100 .flags = IORESOURCE_IRQ,
101 },
102 };
103
104 static struct mfd_cell onkey_devs[] = {
105 {
106 .name = "max8925-onkey",
107 .num_resources = 2,
108 .resources = &onkey_resources[0],
109 .id = -1,
110 },
111 };
112
113 static struct resource sd1_resources[] = {
114 {0x06, 0x06, "sdv", IORESOURCE_REG, },
115 };
116
117 static struct resource sd2_resources[] = {
118 {0x09, 0x09, "sdv", IORESOURCE_REG, },
119 };
120
121 static struct resource sd3_resources[] = {
122 {0x0c, 0x0c, "sdv", IORESOURCE_REG, },
123 };
124
125 static struct resource ldo1_resources[] = {
126 {0x1a, 0x1a, "ldov", IORESOURCE_REG, },
127 };
128
129 static struct resource ldo2_resources[] = {
130 {0x1e, 0x1e, "ldov", IORESOURCE_REG, },
131 };
132
133 static struct resource ldo3_resources[] = {
134 {0x22, 0x22, "ldov", IORESOURCE_REG, },
135 };
136
137 static struct resource ldo4_resources[] = {
138 {0x26, 0x26, "ldov", IORESOURCE_REG, },
139 };
140
141 static struct resource ldo5_resources[] = {
142 {0x2a, 0x2a, "ldov", IORESOURCE_REG, },
143 };
144
145 static struct resource ldo6_resources[] = {
146 {0x2e, 0x2e, "ldov", IORESOURCE_REG, },
147 };
148
149 static struct resource ldo7_resources[] = {
150 {0x32, 0x32, "ldov", IORESOURCE_REG, },
151 };
152
153 static struct resource ldo8_resources[] = {
154 {0x36, 0x36, "ldov", IORESOURCE_REG, },
155 };
156
157 static struct resource ldo9_resources[] = {
158 {0x3a, 0x3a, "ldov", IORESOURCE_REG, },
159 };
160
161 static struct resource ldo10_resources[] = {
162 {0x3e, 0x3e, "ldov", IORESOURCE_REG, },
163 };
164
165 static struct resource ldo11_resources[] = {
166 {0x42, 0x42, "ldov", IORESOURCE_REG, },
167 };
168
169 static struct resource ldo12_resources[] = {
170 {0x46, 0x46, "ldov", IORESOURCE_REG, },
171 };
172
173 static struct resource ldo13_resources[] = {
174 {0x4a, 0x4a, "ldov", IORESOURCE_REG, },
175 };
176
177 static struct resource ldo14_resources[] = {
178 {0x4e, 0x4e, "ldov", IORESOURCE_REG, },
179 };
180
181 static struct resource ldo15_resources[] = {
182 {0x52, 0x52, "ldov", IORESOURCE_REG, },
183 };
184
185 static struct resource ldo16_resources[] = {
186 {0x12, 0x12, "ldov", IORESOURCE_REG, },
187 };
188
189 static struct resource ldo17_resources[] = {
190 {0x16, 0x16, "ldov", IORESOURCE_REG, },
191 };
192
193 static struct resource ldo18_resources[] = {
194 {0x74, 0x74, "ldov", IORESOURCE_REG, },
195 };
196
197 static struct resource ldo19_resources[] = {
198 {0x5e, 0x5e, "ldov", IORESOURCE_REG, },
199 };
200
201 static struct resource ldo20_resources[] = {
202 {0x9e, 0x9e, "ldov", IORESOURCE_REG, },
203 };
204
205 static struct mfd_cell reg_devs[] = {
206 {
207 .name = "max8925-regulator",
208 .id = 0,
209 .num_resources = ARRAY_SIZE(sd1_resources),
210 .resources = sd1_resources,
211 }, {
212 .name = "max8925-regulator",
213 .id = 1,
214 .num_resources = ARRAY_SIZE(sd2_resources),
215 .resources = sd2_resources,
216 }, {
217 .name = "max8925-regulator",
218 .id = 2,
219 .num_resources = ARRAY_SIZE(sd3_resources),
220 .resources = sd3_resources,
221 }, {
222 .name = "max8925-regulator",
223 .id = 3,
224 .num_resources = ARRAY_SIZE(ldo1_resources),
225 .resources = ldo1_resources,
226 }, {
227 .name = "max8925-regulator",
228 .id = 4,
229 .num_resources = ARRAY_SIZE(ldo2_resources),
230 .resources = ldo2_resources,
231 }, {
232 .name = "max8925-regulator",
233 .id = 5,
234 .num_resources = ARRAY_SIZE(ldo3_resources),
235 .resources = ldo3_resources,
236 }, {
237 .name = "max8925-regulator",
238 .id = 6,
239 .num_resources = ARRAY_SIZE(ldo4_resources),
240 .resources = ldo4_resources,
241 }, {
242 .name = "max8925-regulator",
243 .id = 7,
244 .num_resources = ARRAY_SIZE(ldo5_resources),
245 .resources = ldo5_resources,
246 }, {
247 .name = "max8925-regulator",
248 .id = 8,
249 .num_resources = ARRAY_SIZE(ldo6_resources),
250 .resources = ldo6_resources,
251 }, {
252 .name = "max8925-regulator",
253 .id = 9,
254 .num_resources = ARRAY_SIZE(ldo7_resources),
255 .resources = ldo7_resources,
256 }, {
257 .name = "max8925-regulator",
258 .id = 10,
259 .num_resources = ARRAY_SIZE(ldo8_resources),
260 .resources = ldo8_resources,
261 }, {
262 .name = "max8925-regulator",
263 .id = 11,
264 .num_resources = ARRAY_SIZE(ldo9_resources),
265 .resources = ldo9_resources,
266 }, {
267 .name = "max8925-regulator",
268 .id = 12,
269 .num_resources = ARRAY_SIZE(ldo10_resources),
270 .resources = ldo10_resources,
271 }, {
272 .name = "max8925-regulator",
273 .id = 13,
274 .num_resources = ARRAY_SIZE(ldo11_resources),
275 .resources = ldo11_resources,
276 }, {
277 .name = "max8925-regulator",
278 .id = 14,
279 .num_resources = ARRAY_SIZE(ldo12_resources),
280 .resources = ldo12_resources,
281 }, {
282 .name = "max8925-regulator",
283 .id = 15,
284 .num_resources = ARRAY_SIZE(ldo13_resources),
285 .resources = ldo13_resources,
286 }, {
287 .name = "max8925-regulator",
288 .id = 16,
289 .num_resources = ARRAY_SIZE(ldo14_resources),
290 .resources = ldo14_resources,
291 }, {
292 .name = "max8925-regulator",
293 .id = 17,
294 .num_resources = ARRAY_SIZE(ldo15_resources),
295 .resources = ldo15_resources,
296 }, {
297 .name = "max8925-regulator",
298 .id = 18,
299 .num_resources = ARRAY_SIZE(ldo16_resources),
300 .resources = ldo16_resources,
301 }, {
302 .name = "max8925-regulator",
303 .id = 19,
304 .num_resources = ARRAY_SIZE(ldo17_resources),
305 .resources = ldo17_resources,
306 }, {
307 .name = "max8925-regulator",
308 .id = 20,
309 .num_resources = ARRAY_SIZE(ldo18_resources),
310 .resources = ldo18_resources,
311 }, {
312 .name = "max8925-regulator",
313 .id = 21,
314 .num_resources = ARRAY_SIZE(ldo19_resources),
315 .resources = ldo19_resources,
316 }, {
317 .name = "max8925-regulator",
318 .id = 22,
319 .num_resources = ARRAY_SIZE(ldo20_resources),
320 .resources = ldo20_resources,
321 },
322 };
323
324 enum {
325 FLAGS_ADC = 1, /* register in ADC component */
326 FLAGS_RTC, /* register in RTC component */
327 };
328
329 struct max8925_irq_data {
330 int reg;
331 int mask_reg;
332 int enable; /* enable or not */
333 int offs; /* bit offset in mask register */
334 int flags;
335 int tsc_irq;
336 };
337
338 static struct max8925_irq_data max8925_irqs[] = {
339 [MAX8925_IRQ_VCHG_DC_OVP] = {
340 .reg = MAX8925_CHG_IRQ1,
341 .mask_reg = MAX8925_CHG_IRQ1_MASK,
342 .offs = 1 << 0,
343 },
344 [MAX8925_IRQ_VCHG_DC_F] = {
345 .reg = MAX8925_CHG_IRQ1,
346 .mask_reg = MAX8925_CHG_IRQ1_MASK,
347 .offs = 1 << 1,
348 },
349 [MAX8925_IRQ_VCHG_DC_R] = {
350 .reg = MAX8925_CHG_IRQ1,
351 .mask_reg = MAX8925_CHG_IRQ1_MASK,
352 .offs = 1 << 2,
353 },
354 [MAX8925_IRQ_VCHG_THM_OK_R] = {
355 .reg = MAX8925_CHG_IRQ2,
356 .mask_reg = MAX8925_CHG_IRQ2_MASK,
357 .offs = 1 << 0,
358 },
359 [MAX8925_IRQ_VCHG_THM_OK_F] = {
360 .reg = MAX8925_CHG_IRQ2,
361 .mask_reg = MAX8925_CHG_IRQ2_MASK,
362 .offs = 1 << 1,
363 },
364 [MAX8925_IRQ_VCHG_SYSLOW_F] = {
365 .reg = MAX8925_CHG_IRQ2,
366 .mask_reg = MAX8925_CHG_IRQ2_MASK,
367 .offs = 1 << 2,
368 },
369 [MAX8925_IRQ_VCHG_SYSLOW_R] = {
370 .reg = MAX8925_CHG_IRQ2,
371 .mask_reg = MAX8925_CHG_IRQ2_MASK,
372 .offs = 1 << 3,
373 },
374 [MAX8925_IRQ_VCHG_RST] = {
375 .reg = MAX8925_CHG_IRQ2,
376 .mask_reg = MAX8925_CHG_IRQ2_MASK,
377 .offs = 1 << 4,
378 },
379 [MAX8925_IRQ_VCHG_DONE] = {
380 .reg = MAX8925_CHG_IRQ2,
381 .mask_reg = MAX8925_CHG_IRQ2_MASK,
382 .offs = 1 << 5,
383 },
384 [MAX8925_IRQ_VCHG_TOPOFF] = {
385 .reg = MAX8925_CHG_IRQ2,
386 .mask_reg = MAX8925_CHG_IRQ2_MASK,
387 .offs = 1 << 6,
388 },
389 [MAX8925_IRQ_VCHG_TMR_FAULT] = {
390 .reg = MAX8925_CHG_IRQ2,
391 .mask_reg = MAX8925_CHG_IRQ2_MASK,
392 .offs = 1 << 7,
393 },
394 [MAX8925_IRQ_GPM_RSTIN] = {
395 .reg = MAX8925_ON_OFF_IRQ1,
396 .mask_reg = MAX8925_ON_OFF_IRQ1_MASK,
397 .offs = 1 << 0,
398 },
399 [MAX8925_IRQ_GPM_MPL] = {
400 .reg = MAX8925_ON_OFF_IRQ1,
401 .mask_reg = MAX8925_ON_OFF_IRQ1_MASK,
402 .offs = 1 << 1,
403 },
404 [MAX8925_IRQ_GPM_SW_3SEC] = {
405 .reg = MAX8925_ON_OFF_IRQ1,
406 .mask_reg = MAX8925_ON_OFF_IRQ1_MASK,
407 .offs = 1 << 2,
408 },
409 [MAX8925_IRQ_GPM_EXTON_F] = {
410 .reg = MAX8925_ON_OFF_IRQ1,
411 .mask_reg = MAX8925_ON_OFF_IRQ1_MASK,
412 .offs = 1 << 3,
413 },
414 [MAX8925_IRQ_GPM_EXTON_R] = {
415 .reg = MAX8925_ON_OFF_IRQ1,
416 .mask_reg = MAX8925_ON_OFF_IRQ1_MASK,
417 .offs = 1 << 4,
418 },
419 [MAX8925_IRQ_GPM_SW_1SEC] = {
420 .reg = MAX8925_ON_OFF_IRQ1,
421 .mask_reg = MAX8925_ON_OFF_IRQ1_MASK,
422 .offs = 1 << 5,
423 },
424 [MAX8925_IRQ_GPM_SW_F] = {
425 .reg = MAX8925_ON_OFF_IRQ1,
426 .mask_reg = MAX8925_ON_OFF_IRQ1_MASK,
427 .offs = 1 << 6,
428 },
429 [MAX8925_IRQ_GPM_SW_R] = {
430 .reg = MAX8925_ON_OFF_IRQ1,
431 .mask_reg = MAX8925_ON_OFF_IRQ1_MASK,
432 .offs = 1 << 7,
433 },
434 [MAX8925_IRQ_GPM_SYSCKEN_F] = {
435 .reg = MAX8925_ON_OFF_IRQ2,
436 .mask_reg = MAX8925_ON_OFF_IRQ2_MASK,
437 .offs = 1 << 0,
438 },
439 [MAX8925_IRQ_GPM_SYSCKEN_R] = {
440 .reg = MAX8925_ON_OFF_IRQ2,
441 .mask_reg = MAX8925_ON_OFF_IRQ2_MASK,
442 .offs = 1 << 1,
443 },
444 [MAX8925_IRQ_RTC_ALARM1] = {
445 .reg = MAX8925_RTC_IRQ,
446 .mask_reg = MAX8925_RTC_IRQ_MASK,
447 .offs = 1 << 2,
448 .flags = FLAGS_RTC,
449 },
450 [MAX8925_IRQ_RTC_ALARM0] = {
451 .reg = MAX8925_RTC_IRQ,
452 .mask_reg = MAX8925_RTC_IRQ_MASK,
453 .offs = 1 << 3,
454 .flags = FLAGS_RTC,
455 },
456 [MAX8925_IRQ_TSC_STICK] = {
457 .reg = MAX8925_TSC_IRQ,
458 .mask_reg = MAX8925_TSC_IRQ_MASK,
459 .offs = 1 << 0,
460 .flags = FLAGS_ADC,
461 .tsc_irq = 1,
462 },
463 [MAX8925_IRQ_TSC_NSTICK] = {
464 .reg = MAX8925_TSC_IRQ,
465 .mask_reg = MAX8925_TSC_IRQ_MASK,
466 .offs = 1 << 1,
467 .flags = FLAGS_ADC,
468 .tsc_irq = 1,
469 },
470 };
471
472 static inline struct max8925_irq_data *irq_to_max8925(struct max8925_chip *chip,
473 int irq)
474 {
475 return &max8925_irqs[irq - chip->irq_base];
476 }
477
478 static irqreturn_t max8925_irq(int irq, void *data)
479 {
480 struct max8925_chip *chip = data;
481 struct max8925_irq_data *irq_data;
482 struct i2c_client *i2c;
483 int read_reg = -1, value = 0;
484 int i;
485
486 for (i = 0; i < ARRAY_SIZE(max8925_irqs); i++) {
487 irq_data = &max8925_irqs[i];
488 /* TSC IRQ should be serviced in max8925_tsc_irq() */
489 if (irq_data->tsc_irq)
490 continue;
491 if (irq_data->flags == FLAGS_RTC)
492 i2c = chip->rtc;
493 else if (irq_data->flags == FLAGS_ADC)
494 i2c = chip->adc;
495 else
496 i2c = chip->i2c;
497 if (read_reg != irq_data->reg) {
498 read_reg = irq_data->reg;
499 value = max8925_reg_read(i2c, irq_data->reg);
500 }
501 if (value & irq_data->enable)
502 handle_nested_irq(chip->irq_base + i);
503 }
504 return IRQ_HANDLED;
505 }
506
507 static irqreturn_t max8925_tsc_irq(int irq, void *data)
508 {
509 struct max8925_chip *chip = data;
510 struct max8925_irq_data *irq_data;
511 struct i2c_client *i2c;
512 int read_reg = -1, value = 0;
513 int i;
514
515 for (i = 0; i < ARRAY_SIZE(max8925_irqs); i++) {
516 irq_data = &max8925_irqs[i];
517 /* non TSC IRQ should be serviced in max8925_irq() */
518 if (!irq_data->tsc_irq)
519 continue;
520 if (irq_data->flags == FLAGS_RTC)
521 i2c = chip->rtc;
522 else if (irq_data->flags == FLAGS_ADC)
523 i2c = chip->adc;
524 else
525 i2c = chip->i2c;
526 if (read_reg != irq_data->reg) {
527 read_reg = irq_data->reg;
528 value = max8925_reg_read(i2c, irq_data->reg);
529 }
530 if (value & irq_data->enable)
531 handle_nested_irq(chip->irq_base + i);
532 }
533 return IRQ_HANDLED;
534 }
535
536 static void max8925_irq_lock(struct irq_data *data)
537 {
538 struct max8925_chip *chip = irq_data_get_irq_chip_data(data);
539
540 mutex_lock(&chip->irq_lock);
541 }
542
543 static void max8925_irq_sync_unlock(struct irq_data *data)
544 {
545 struct max8925_chip *chip = irq_data_get_irq_chip_data(data);
546 struct max8925_irq_data *irq_data;
547 static unsigned char cache_chg[2] = {0xff, 0xff};
548 static unsigned char cache_on[2] = {0xff, 0xff};
549 static unsigned char cache_rtc = 0xff, cache_tsc = 0xff;
550 unsigned char irq_chg[2], irq_on[2];
551 unsigned char irq_rtc, irq_tsc;
552 int i;
553
554 /* Load cached value. In initial, all IRQs are masked */
555 irq_chg[0] = cache_chg[0];
556 irq_chg[1] = cache_chg[1];
557 irq_on[0] = cache_on[0];
558 irq_on[1] = cache_on[1];
559 irq_rtc = cache_rtc;
560 irq_tsc = cache_tsc;
561 for (i = 0; i < ARRAY_SIZE(max8925_irqs); i++) {
562 irq_data = &max8925_irqs[i];
563 /* 1 -- disable, 0 -- enable */
564 switch (irq_data->mask_reg) {
565 case MAX8925_CHG_IRQ1_MASK:
566 irq_chg[0] &= ~irq_data->enable;
567 break;
568 case MAX8925_CHG_IRQ2_MASK:
569 irq_chg[1] &= ~irq_data->enable;
570 break;
571 case MAX8925_ON_OFF_IRQ1_MASK:
572 irq_on[0] &= ~irq_data->enable;
573 break;
574 case MAX8925_ON_OFF_IRQ2_MASK:
575 irq_on[1] &= ~irq_data->enable;
576 break;
577 case MAX8925_RTC_IRQ_MASK:
578 irq_rtc &= ~irq_data->enable;
579 break;
580 case MAX8925_TSC_IRQ_MASK:
581 irq_tsc &= ~irq_data->enable;
582 break;
583 default:
584 dev_err(chip->dev, "wrong IRQ\n");
585 break;
586 }
587 }
588 /* update mask into registers */
589 if (cache_chg[0] != irq_chg[0]) {
590 cache_chg[0] = irq_chg[0];
591 max8925_reg_write(chip->i2c, MAX8925_CHG_IRQ1_MASK,
592 irq_chg[0]);
593 }
594 if (cache_chg[1] != irq_chg[1]) {
595 cache_chg[1] = irq_chg[1];
596 max8925_reg_write(chip->i2c, MAX8925_CHG_IRQ2_MASK,
597 irq_chg[1]);
598 }
599 if (cache_on[0] != irq_on[0]) {
600 cache_on[0] = irq_on[0];
601 max8925_reg_write(chip->i2c, MAX8925_ON_OFF_IRQ1_MASK,
602 irq_on[0]);
603 }
604 if (cache_on[1] != irq_on[1]) {
605 cache_on[1] = irq_on[1];
606 max8925_reg_write(chip->i2c, MAX8925_ON_OFF_IRQ2_MASK,
607 irq_on[1]);
608 }
609 if (cache_rtc != irq_rtc) {
610 cache_rtc = irq_rtc;
611 max8925_reg_write(chip->rtc, MAX8925_RTC_IRQ_MASK, irq_rtc);
612 }
613 if (cache_tsc != irq_tsc) {
614 cache_tsc = irq_tsc;
615 max8925_reg_write(chip->adc, MAX8925_TSC_IRQ_MASK, irq_tsc);
616 }
617
618 mutex_unlock(&chip->irq_lock);
619 }
620
621 static void max8925_irq_enable(struct irq_data *data)
622 {
623 struct max8925_chip *chip = irq_data_get_irq_chip_data(data);
624 max8925_irqs[data->irq - chip->irq_base].enable
625 = max8925_irqs[data->irq - chip->irq_base].offs;
626 }
627
628 static void max8925_irq_disable(struct irq_data *data)
629 {
630 struct max8925_chip *chip = irq_data_get_irq_chip_data(data);
631 max8925_irqs[data->irq - chip->irq_base].enable = 0;
632 }
633
634 static struct irq_chip max8925_irq_chip = {
635 .name = "max8925",
636 .irq_bus_lock = max8925_irq_lock,
637 .irq_bus_sync_unlock = max8925_irq_sync_unlock,
638 .irq_enable = max8925_irq_enable,
639 .irq_disable = max8925_irq_disable,
640 };
641
642 static int max8925_irq_init(struct max8925_chip *chip, int irq,
643 struct max8925_platform_data *pdata)
644 {
645 unsigned long flags = IRQF_TRIGGER_FALLING | IRQF_ONESHOT;
646 int i, ret;
647 int __irq;
648
649 if (!pdata || !pdata->irq_base) {
650 dev_warn(chip->dev, "No interrupt support on IRQ base\n");
651 return -EINVAL;
652 }
653 /* clear all interrupts */
654 max8925_reg_read(chip->i2c, MAX8925_CHG_IRQ1);
655 max8925_reg_read(chip->i2c, MAX8925_CHG_IRQ2);
656 max8925_reg_read(chip->i2c, MAX8925_ON_OFF_IRQ1);
657 max8925_reg_read(chip->i2c, MAX8925_ON_OFF_IRQ2);
658 max8925_reg_read(chip->rtc, MAX8925_RTC_IRQ);
659 max8925_reg_read(chip->adc, MAX8925_TSC_IRQ);
660 /* mask all interrupts except for TSC */
661 max8925_reg_write(chip->rtc, MAX8925_ALARM0_CNTL, 0);
662 max8925_reg_write(chip->rtc, MAX8925_ALARM1_CNTL, 0);
663 max8925_reg_write(chip->i2c, MAX8925_CHG_IRQ1_MASK, 0xff);
664 max8925_reg_write(chip->i2c, MAX8925_CHG_IRQ2_MASK, 0xff);
665 max8925_reg_write(chip->i2c, MAX8925_ON_OFF_IRQ1_MASK, 0xff);
666 max8925_reg_write(chip->i2c, MAX8925_ON_OFF_IRQ2_MASK, 0xff);
667 max8925_reg_write(chip->rtc, MAX8925_RTC_IRQ_MASK, 0xff);
668
669 mutex_init(&chip->irq_lock);
670 chip->core_irq = irq;
671 chip->irq_base = pdata->irq_base;
672
673 /* register with genirq */
674 for (i = 0; i < ARRAY_SIZE(max8925_irqs); i++) {
675 __irq = i + chip->irq_base;
676 irq_set_chip_data(__irq, chip);
677 irq_set_chip_and_handler(__irq, &max8925_irq_chip,
678 handle_edge_irq);
679 irq_set_nested_thread(__irq, 1);
680 #ifdef CONFIG_ARM
681 set_irq_flags(__irq, IRQF_VALID);
682 #else
683 irq_set_noprobe(__irq);
684 #endif
685 }
686 if (!irq) {
687 dev_warn(chip->dev, "No interrupt support on core IRQ\n");
688 goto tsc_irq;
689 }
690
691 ret = request_threaded_irq(irq, NULL, max8925_irq, flags | IRQF_ONESHOT,
692 "max8925", chip);
693 if (ret) {
694 dev_err(chip->dev, "Failed to request core IRQ: %d\n", ret);
695 chip->core_irq = 0;
696 }
697
698 tsc_irq:
699 /* mask TSC interrupt */
700 max8925_reg_write(chip->adc, MAX8925_TSC_IRQ_MASK, 0x0f);
701
702 if (!pdata->tsc_irq) {
703 dev_warn(chip->dev, "No interrupt support on TSC IRQ\n");
704 return 0;
705 }
706 chip->tsc_irq = pdata->tsc_irq;
707
708 ret = request_threaded_irq(chip->tsc_irq, NULL, max8925_tsc_irq,
709 flags | IRQF_ONESHOT, "max8925-tsc", chip);
710 if (ret) {
711 dev_err(chip->dev, "Failed to request TSC IRQ: %d\n", ret);
712 chip->tsc_irq = 0;
713 }
714 return 0;
715 }
716
717 static void init_regulator(struct max8925_chip *chip,
718 struct max8925_platform_data *pdata)
719 {
720 int ret;
721
722 if (!pdata)
723 return;
724 if (pdata->sd1) {
725 reg_devs[0].platform_data = pdata->sd1;
726 reg_devs[0].pdata_size = sizeof(struct regulator_init_data);
727 }
728 if (pdata->sd2) {
729 reg_devs[1].platform_data = pdata->sd2;
730 reg_devs[1].pdata_size = sizeof(struct regulator_init_data);
731 }
732 if (pdata->sd3) {
733 reg_devs[2].platform_data = pdata->sd3;
734 reg_devs[2].pdata_size = sizeof(struct regulator_init_data);
735 }
736 if (pdata->ldo1) {
737 reg_devs[3].platform_data = pdata->ldo1;
738 reg_devs[3].pdata_size = sizeof(struct regulator_init_data);
739 }
740 if (pdata->ldo2) {
741 reg_devs[4].platform_data = pdata->ldo2;
742 reg_devs[4].pdata_size = sizeof(struct regulator_init_data);
743 }
744 if (pdata->ldo3) {
745 reg_devs[5].platform_data = pdata->ldo3;
746 reg_devs[5].pdata_size = sizeof(struct regulator_init_data);
747 }
748 if (pdata->ldo4) {
749 reg_devs[6].platform_data = pdata->ldo4;
750 reg_devs[6].pdata_size = sizeof(struct regulator_init_data);
751 }
752 if (pdata->ldo5) {
753 reg_devs[7].platform_data = pdata->ldo5;
754 reg_devs[7].pdata_size = sizeof(struct regulator_init_data);
755 }
756 if (pdata->ldo6) {
757 reg_devs[8].platform_data = pdata->ldo6;
758 reg_devs[8].pdata_size = sizeof(struct regulator_init_data);
759 }
760 if (pdata->ldo7) {
761 reg_devs[9].platform_data = pdata->ldo7;
762 reg_devs[9].pdata_size = sizeof(struct regulator_init_data);
763 }
764 if (pdata->ldo8) {
765 reg_devs[10].platform_data = pdata->ldo8;
766 reg_devs[10].pdata_size = sizeof(struct regulator_init_data);
767 }
768 if (pdata->ldo9) {
769 reg_devs[11].platform_data = pdata->ldo9;
770 reg_devs[11].pdata_size = sizeof(struct regulator_init_data);
771 }
772 if (pdata->ldo10) {
773 reg_devs[12].platform_data = pdata->ldo10;
774 reg_devs[12].pdata_size = sizeof(struct regulator_init_data);
775 }
776 if (pdata->ldo11) {
777 reg_devs[13].platform_data = pdata->ldo11;
778 reg_devs[13].pdata_size = sizeof(struct regulator_init_data);
779 }
780 if (pdata->ldo12) {
781 reg_devs[14].platform_data = pdata->ldo12;
782 reg_devs[14].pdata_size = sizeof(struct regulator_init_data);
783 }
784 if (pdata->ldo13) {
785 reg_devs[15].platform_data = pdata->ldo13;
786 reg_devs[15].pdata_size = sizeof(struct regulator_init_data);
787 }
788 if (pdata->ldo14) {
789 reg_devs[16].platform_data = pdata->ldo14;
790 reg_devs[16].pdata_size = sizeof(struct regulator_init_data);
791 }
792 if (pdata->ldo15) {
793 reg_devs[17].platform_data = pdata->ldo15;
794 reg_devs[17].pdata_size = sizeof(struct regulator_init_data);
795 }
796 if (pdata->ldo16) {
797 reg_devs[18].platform_data = pdata->ldo16;
798 reg_devs[18].pdata_size = sizeof(struct regulator_init_data);
799 }
800 if (pdata->ldo17) {
801 reg_devs[19].platform_data = pdata->ldo17;
802 reg_devs[19].pdata_size = sizeof(struct regulator_init_data);
803 }
804 if (pdata->ldo18) {
805 reg_devs[20].platform_data = pdata->ldo18;
806 reg_devs[20].pdata_size = sizeof(struct regulator_init_data);
807 }
808 if (pdata->ldo19) {
809 reg_devs[21].platform_data = pdata->ldo19;
810 reg_devs[21].pdata_size = sizeof(struct regulator_init_data);
811 }
812 if (pdata->ldo20) {
813 reg_devs[22].platform_data = pdata->ldo20;
814 reg_devs[22].pdata_size = sizeof(struct regulator_init_data);
815 }
816 ret = mfd_add_devices(chip->dev, 0, reg_devs, ARRAY_SIZE(reg_devs),
817 NULL, 0, NULL);
818 if (ret < 0) {
819 dev_err(chip->dev, "Failed to add regulator subdev\n");
820 return;
821 }
822 }
823
824 int max8925_device_init(struct max8925_chip *chip,
825 struct max8925_platform_data *pdata)
826 {
827 int ret;
828
829 max8925_irq_init(chip, chip->i2c->irq, pdata);
830
831 if (pdata && (pdata->power || pdata->touch)) {
832 /* enable ADC to control internal reference */
833 max8925_set_bits(chip->i2c, MAX8925_RESET_CNFG, 1, 1);
834 /* enable internal reference for ADC */
835 max8925_set_bits(chip->adc, MAX8925_TSC_CNFG1, 3, 2);
836 /* check for internal reference IRQ */
837 do {
838 ret = max8925_reg_read(chip->adc, MAX8925_TSC_IRQ);
839 } while (ret & MAX8925_NREF_OK);
840 /* enaable ADC scheduler, interval is 1 second */
841 max8925_set_bits(chip->adc, MAX8925_ADC_SCHED, 3, 2);
842 }
843
844 /* enable Momentary Power Loss */
845 max8925_set_bits(chip->rtc, MAX8925_MPL_CNTL, 1 << 4, 1 << 4);
846
847 ret = mfd_add_devices(chip->dev, 0, &rtc_devs[0],
848 ARRAY_SIZE(rtc_devs),
849 &rtc_resources[0], chip->irq_base, NULL);
850 if (ret < 0) {
851 dev_err(chip->dev, "Failed to add rtc subdev\n");
852 goto out;
853 }
854
855 ret = mfd_add_devices(chip->dev, 0, &onkey_devs[0],
856 ARRAY_SIZE(onkey_devs),
857 &onkey_resources[0], 0, NULL);
858 if (ret < 0) {
859 dev_err(chip->dev, "Failed to add onkey subdev\n");
860 goto out_dev;
861 }
862
863 init_regulator(chip, pdata);
864
865 if (pdata && pdata->backlight) {
866 bk_devs[0].platform_data = &pdata->backlight;
867 bk_devs[0].pdata_size = sizeof(struct max8925_backlight_pdata);
868 }
869 ret = mfd_add_devices(chip->dev, 0, bk_devs, ARRAY_SIZE(bk_devs),
870 NULL, 0, NULL);
871 if (ret < 0) {
872 dev_err(chip->dev, "Failed to add backlight subdev\n");
873 goto out_dev;
874 }
875
876 if (pdata && pdata->power) {
877 ret = mfd_add_devices(chip->dev, 0, &power_devs[0],
878 ARRAY_SIZE(power_devs),
879 &power_supply_resources[0], 0, NULL);
880 if (ret < 0) {
881 dev_err(chip->dev, "Failed to add power supply "
882 "subdev\n");
883 goto out_dev;
884 }
885 }
886
887 if (pdata && pdata->touch) {
888 ret = mfd_add_devices(chip->dev, 0, &touch_devs[0],
889 ARRAY_SIZE(touch_devs),
890 &touch_resources[0], 0, NULL);
891 if (ret < 0) {
892 dev_err(chip->dev, "Failed to add touch subdev\n");
893 goto out_dev;
894 }
895 }
896
897 return 0;
898 out_dev:
899 mfd_remove_devices(chip->dev);
900 out:
901 return ret;
902 }
903
904 void max8925_device_exit(struct max8925_chip *chip)
905 {
906 if (chip->core_irq)
907 free_irq(chip->core_irq, chip);
908 if (chip->tsc_irq)
909 free_irq(chip->tsc_irq, chip);
910 mfd_remove_devices(chip->dev);
911 }
912
913
914 MODULE_DESCRIPTION("PMIC Driver for Maxim MAX8925");
915 MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com");
916 MODULE_LICENSE("GPL");
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