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ab8500-core.c revision b4a310373209b87ba455f45227b5361cb746b946 
1/*
2 * Copyright (C) ST-Ericsson SA 2010
3 *
4 * License Terms: GNU General Public License v2
5 * Author: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
6 * Author: Rabin Vincent <rabin.vincent@stericsson.com>
7 * Author: Mattias Wallin <mattias.wallin@stericsson.com>
8 */
9
10#include <linux/kernel.h>
11#include <linux/slab.h>
12#include <linux/init.h>
13#include <linux/irq.h>
14#include <linux/delay.h>
15#include <linux/interrupt.h>
16#include <linux/module.h>
17#include <linux/platform_device.h>
18#include <linux/mfd/core.h>
19#include <linux/mfd/abx500.h>
20#include <linux/mfd/ab8500.h>
21#include <linux/regulator/ab8500.h>
22
23/*
24 * Interrupt register offsets
25 * Bank : 0x0E
26 */
27#define AB8500_IT_SOURCE1_REG		0x00
28#define AB8500_IT_SOURCE2_REG		0x01
29#define AB8500_IT_SOURCE3_REG		0x02
30#define AB8500_IT_SOURCE4_REG		0x03
31#define AB8500_IT_SOURCE5_REG		0x04
32#define AB8500_IT_SOURCE6_REG		0x05
33#define AB8500_IT_SOURCE7_REG		0x06
34#define AB8500_IT_SOURCE8_REG		0x07
35#define AB8500_IT_SOURCE19_REG		0x12
36#define AB8500_IT_SOURCE20_REG		0x13
37#define AB8500_IT_SOURCE21_REG		0x14
38#define AB8500_IT_SOURCE22_REG		0x15
39#define AB8500_IT_SOURCE23_REG		0x16
40#define AB8500_IT_SOURCE24_REG		0x17
41
42/*
43 * latch registers
44 */
45#define AB8500_IT_LATCH1_REG		0x20
46#define AB8500_IT_LATCH2_REG		0x21
47#define AB8500_IT_LATCH3_REG		0x22
48#define AB8500_IT_LATCH4_REG		0x23
49#define AB8500_IT_LATCH5_REG		0x24
50#define AB8500_IT_LATCH6_REG		0x25
51#define AB8500_IT_LATCH7_REG		0x26
52#define AB8500_IT_LATCH8_REG		0x27
53#define AB8500_IT_LATCH9_REG		0x28
54#define AB8500_IT_LATCH10_REG		0x29
55#define AB8500_IT_LATCH12_REG		0x2B
56#define AB8500_IT_LATCH19_REG		0x32
57#define AB8500_IT_LATCH20_REG		0x33
58#define AB8500_IT_LATCH21_REG		0x34
59#define AB8500_IT_LATCH22_REG		0x35
60#define AB8500_IT_LATCH23_REG		0x36
61#define AB8500_IT_LATCH24_REG		0x37
62
63/*
64 * mask registers
65 */
66
67#define AB8500_IT_MASK1_REG		0x40
68#define AB8500_IT_MASK2_REG		0x41
69#define AB8500_IT_MASK3_REG		0x42
70#define AB8500_IT_MASK4_REG		0x43
71#define AB8500_IT_MASK5_REG		0x44
72#define AB8500_IT_MASK6_REG		0x45
73#define AB8500_IT_MASK7_REG		0x46
74#define AB8500_IT_MASK8_REG		0x47
75#define AB8500_IT_MASK9_REG		0x48
76#define AB8500_IT_MASK10_REG		0x49
77#define AB8500_IT_MASK11_REG		0x4A
78#define AB8500_IT_MASK12_REG		0x4B
79#define AB8500_IT_MASK13_REG		0x4C
80#define AB8500_IT_MASK14_REG		0x4D
81#define AB8500_IT_MASK15_REG		0x4E
82#define AB8500_IT_MASK16_REG		0x4F
83#define AB8500_IT_MASK17_REG		0x50
84#define AB8500_IT_MASK18_REG		0x51
85#define AB8500_IT_MASK19_REG		0x52
86#define AB8500_IT_MASK20_REG		0x53
87#define AB8500_IT_MASK21_REG		0x54
88#define AB8500_IT_MASK22_REG		0x55
89#define AB8500_IT_MASK23_REG		0x56
90#define AB8500_IT_MASK24_REG		0x57
91
92#define AB8500_REV_REG			0x80
93#define AB8500_SWITCH_OFF_STATUS	0x00
94
95#define AB8500_TURN_ON_STATUS		0x00
96
97/*
98 * Map interrupt numbers to the LATCH and MASK register offsets, Interrupt
99 * numbers are indexed into this array with (num / 8).
100 *
101 * This is one off from the register names, i.e. AB8500_IT_MASK1_REG is at
102 * offset 0.
103 */
104static const int ab8500_irq_regoffset[AB8500_NUM_IRQ_REGS] = {
105	0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21,
106};
107
108static int ab8500_get_chip_id(struct device *dev)
109{
110	struct ab8500 *ab8500;
111
112	if (!dev)
113		return -EINVAL;
114	ab8500 = dev_get_drvdata(dev->parent);
115	return ab8500 ? (int)ab8500->chip_id : -EINVAL;
116}
117
118static int set_register_interruptible(struct ab8500 *ab8500, u8 bank,
119	u8 reg, u8 data)
120{
121	int ret;
122	/*
123	 * Put the u8 bank and u8 register together into a an u16.
124	 * The bank on higher 8 bits and register in lower 8 bits.
125	 * */
126	u16 addr = ((u16)bank) << 8 | reg;
127
128	dev_vdbg(ab8500->dev, "wr: addr %#x <= %#x\n", addr, data);
129
130	ret = mutex_lock_interruptible(&ab8500->lock);
131	if (ret)
132		return ret;
133
134	ret = ab8500->write(ab8500, addr, data);
135	if (ret < 0)
136		dev_err(ab8500->dev, "failed to write reg %#x: %d\n",
137			addr, ret);
138	mutex_unlock(&ab8500->lock);
139
140	return ret;
141}
142
143static int ab8500_set_register(struct device *dev, u8 bank,
144	u8 reg, u8 value)
145{
146	struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
147
148	return set_register_interruptible(ab8500, bank, reg, value);
149}
150
151static int get_register_interruptible(struct ab8500 *ab8500, u8 bank,
152	u8 reg, u8 *value)
153{
154	int ret;
155	/* put the u8 bank and u8 reg together into a an u16.
156	 * bank on higher 8 bits and reg in lower */
157	u16 addr = ((u16)bank) << 8 | reg;
158
159	ret = mutex_lock_interruptible(&ab8500->lock);
160	if (ret)
161		return ret;
162
163	ret = ab8500->read(ab8500, addr);
164	if (ret < 0)
165		dev_err(ab8500->dev, "failed to read reg %#x: %d\n",
166			addr, ret);
167	else
168		*value = ret;
169
170	mutex_unlock(&ab8500->lock);
171	dev_vdbg(ab8500->dev, "rd: addr %#x => data %#x\n", addr, ret);
172
173	return ret;
174}
175
176static int ab8500_get_register(struct device *dev, u8 bank,
177	u8 reg, u8 *value)
178{
179	struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
180
181	return get_register_interruptible(ab8500, bank, reg, value);
182}
183
184static int mask_and_set_register_interruptible(struct ab8500 *ab8500, u8 bank,
185	u8 reg, u8 bitmask, u8 bitvalues)
186{
187	int ret;
188	u8 data;
189	/* put the u8 bank and u8 reg together into a an u16.
190	 * bank on higher 8 bits and reg in lower */
191	u16 addr = ((u16)bank) << 8 | reg;
192
193	ret = mutex_lock_interruptible(&ab8500->lock);
194	if (ret)
195		return ret;
196
197	ret = ab8500->read(ab8500, addr);
198	if (ret < 0) {
199		dev_err(ab8500->dev, "failed to read reg %#x: %d\n",
200			addr, ret);
201		goto out;
202	}
203
204	data = (u8)ret;
205	data = (~bitmask & data) | (bitmask & bitvalues);
206
207	ret = ab8500->write(ab8500, addr, data);
208	if (ret < 0)
209		dev_err(ab8500->dev, "failed to write reg %#x: %d\n",
210			addr, ret);
211
212	dev_vdbg(ab8500->dev, "mask: addr %#x => data %#x\n", addr, data);
213out:
214	mutex_unlock(&ab8500->lock);
215	return ret;
216}
217
218static int ab8500_mask_and_set_register(struct device *dev,
219	u8 bank, u8 reg, u8 bitmask, u8 bitvalues)
220{
221	struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
222
223	return mask_and_set_register_interruptible(ab8500, bank, reg,
224		bitmask, bitvalues);
225
226}
227
228static struct abx500_ops ab8500_ops = {
229	.get_chip_id = ab8500_get_chip_id,
230	.get_register = ab8500_get_register,
231	.set_register = ab8500_set_register,
232	.get_register_page = NULL,
233	.set_register_page = NULL,
234	.mask_and_set_register = ab8500_mask_and_set_register,
235	.event_registers_startup_state_get = NULL,
236	.startup_irq_enabled = NULL,
237};
238
239static void ab8500_irq_lock(struct irq_data *data)
240{
241	struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
242
243	mutex_lock(&ab8500->irq_lock);
244}
245
246static void ab8500_irq_sync_unlock(struct irq_data *data)
247{
248	struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
249	int i;
250
251	for (i = 0; i < AB8500_NUM_IRQ_REGS; i++) {
252		u8 old = ab8500->oldmask[i];
253		u8 new = ab8500->mask[i];
254		int reg;
255
256		if (new == old)
257			continue;
258
259		/* Interrupt register 12 doesn't exist prior to version 2.0 */
260		if (ab8500_irq_regoffset[i] == 11 &&
261			ab8500->chip_id < AB8500_CUT2P0)
262			continue;
263
264		ab8500->oldmask[i] = new;
265
266		reg = AB8500_IT_MASK1_REG + ab8500_irq_regoffset[i];
267		set_register_interruptible(ab8500, AB8500_INTERRUPT, reg, new);
268	}
269
270	mutex_unlock(&ab8500->irq_lock);
271}
272
273static void ab8500_irq_mask(struct irq_data *data)
274{
275	struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
276	int offset = data->irq - ab8500->irq_base;
277	int index = offset / 8;
278	int mask = 1 << (offset % 8);
279
280	ab8500->mask[index] |= mask;
281}
282
283static void ab8500_irq_unmask(struct irq_data *data)
284{
285	struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
286	int offset = data->irq - ab8500->irq_base;
287	int index = offset / 8;
288	int mask = 1 << (offset % 8);
289
290	ab8500->mask[index] &= ~mask;
291}
292
293static struct irq_chip ab8500_irq_chip = {
294	.name			= "ab8500",
295	.irq_bus_lock		= ab8500_irq_lock,
296	.irq_bus_sync_unlock	= ab8500_irq_sync_unlock,
297	.irq_mask		= ab8500_irq_mask,
298	.irq_disable		= ab8500_irq_mask,
299	.irq_unmask		= ab8500_irq_unmask,
300};
301
302static irqreturn_t ab8500_irq(int irq, void *dev)
303{
304	struct ab8500 *ab8500 = dev;
305	int i;
306
307	dev_vdbg(ab8500->dev, "interrupt\n");
308
309	for (i = 0; i < AB8500_NUM_IRQ_REGS; i++) {
310		int regoffset = ab8500_irq_regoffset[i];
311		int status;
312		u8 value;
313
314		/* Interrupt register 12 doesn't exist prior to version 2.0 */
315		if (regoffset == 11 && ab8500->chip_id < AB8500_CUT2P0)
316			continue;
317
318		status = get_register_interruptible(ab8500, AB8500_INTERRUPT,
319			AB8500_IT_LATCH1_REG + regoffset, &value);
320		if (status < 0 || value == 0)
321			continue;
322
323		do {
324			int bit = __ffs(value);
325			int line = i * 8 + bit;
326
327			handle_nested_irq(ab8500->irq_base + line);
328			value &= ~(1 << bit);
329		} while (value);
330	}
331
332	return IRQ_HANDLED;
333}
334
335static int ab8500_irq_init(struct ab8500 *ab8500)
336{
337	int base = ab8500->irq_base;
338	int irq;
339
340	for (irq = base; irq < base + AB8500_NR_IRQS; irq++) {
341		irq_set_chip_data(irq, ab8500);
342		irq_set_chip_and_handler(irq, &ab8500_irq_chip,
343					 handle_simple_irq);
344		irq_set_nested_thread(irq, 1);
345#ifdef CONFIG_ARM
346		set_irq_flags(irq, IRQF_VALID);
347#else
348		irq_set_noprobe(irq);
349#endif
350	}
351
352	return 0;
353}
354
355static void ab8500_irq_remove(struct ab8500 *ab8500)
356{
357	int base = ab8500->irq_base;
358	int irq;
359
360	for (irq = base; irq < base + AB8500_NR_IRQS; irq++) {
361#ifdef CONFIG_ARM
362		set_irq_flags(irq, 0);
363#endif
364		irq_set_chip_and_handler(irq, NULL, NULL);
365		irq_set_chip_data(irq, NULL);
366	}
367}
368
369static struct resource __devinitdata ab8500_gpio_resources[] = {
370	{
371		.name	= "GPIO_INT6",
372		.start	= AB8500_INT_GPIO6R,
373		.end	= AB8500_INT_GPIO41F,
374		.flags	= IORESOURCE_IRQ,
375	}
376};
377
378static struct resource __devinitdata ab8500_gpadc_resources[] = {
379	{
380		.name	= "HW_CONV_END",
381		.start	= AB8500_INT_GP_HW_ADC_CONV_END,
382		.end	= AB8500_INT_GP_HW_ADC_CONV_END,
383		.flags	= IORESOURCE_IRQ,
384	},
385	{
386		.name	= "SW_CONV_END",
387		.start	= AB8500_INT_GP_SW_ADC_CONV_END,
388		.end	= AB8500_INT_GP_SW_ADC_CONV_END,
389		.flags	= IORESOURCE_IRQ,
390	},
391};
392
393static struct resource __devinitdata ab8500_rtc_resources[] = {
394	{
395		.name	= "60S",
396		.start	= AB8500_INT_RTC_60S,
397		.end	= AB8500_INT_RTC_60S,
398		.flags	= IORESOURCE_IRQ,
399	},
400	{
401		.name	= "ALARM",
402		.start	= AB8500_INT_RTC_ALARM,
403		.end	= AB8500_INT_RTC_ALARM,
404		.flags	= IORESOURCE_IRQ,
405	},
406};
407
408static struct resource __devinitdata ab8500_poweronkey_db_resources[] = {
409	{
410		.name	= "ONKEY_DBF",
411		.start	= AB8500_INT_PON_KEY1DB_F,
412		.end	= AB8500_INT_PON_KEY1DB_F,
413		.flags	= IORESOURCE_IRQ,
414	},
415	{
416		.name	= "ONKEY_DBR",
417		.start	= AB8500_INT_PON_KEY1DB_R,
418		.end	= AB8500_INT_PON_KEY1DB_R,
419		.flags	= IORESOURCE_IRQ,
420	},
421};
422
423static struct resource __devinitdata ab8500_av_acc_detect_resources[] = {
424	{
425	       .name = "ACC_DETECT_1DB_F",
426	       .start = AB8500_INT_ACC_DETECT_1DB_F,
427	       .end = AB8500_INT_ACC_DETECT_1DB_F,
428	       .flags = IORESOURCE_IRQ,
429	},
430	{
431	       .name = "ACC_DETECT_1DB_R",
432	       .start = AB8500_INT_ACC_DETECT_1DB_R,
433	       .end = AB8500_INT_ACC_DETECT_1DB_R,
434	       .flags = IORESOURCE_IRQ,
435	},
436	{
437	       .name = "ACC_DETECT_21DB_F",
438	       .start = AB8500_INT_ACC_DETECT_21DB_F,
439	       .end = AB8500_INT_ACC_DETECT_21DB_F,
440	       .flags = IORESOURCE_IRQ,
441	},
442	{
443	       .name = "ACC_DETECT_21DB_R",
444	       .start = AB8500_INT_ACC_DETECT_21DB_R,
445	       .end = AB8500_INT_ACC_DETECT_21DB_R,
446	       .flags = IORESOURCE_IRQ,
447	},
448	{
449	       .name = "ACC_DETECT_22DB_F",
450	       .start = AB8500_INT_ACC_DETECT_22DB_F,
451	       .end = AB8500_INT_ACC_DETECT_22DB_F,
452	       .flags = IORESOURCE_IRQ,
453	},
454	{
455	       .name = "ACC_DETECT_22DB_R",
456	       .start = AB8500_INT_ACC_DETECT_22DB_R,
457	       .end = AB8500_INT_ACC_DETECT_22DB_R,
458	       .flags = IORESOURCE_IRQ,
459	},
460};
461
462static struct resource __devinitdata ab8500_charger_resources[] = {
463	{
464		.name = "MAIN_CH_UNPLUG_DET",
465		.start = AB8500_INT_MAIN_CH_UNPLUG_DET,
466		.end = AB8500_INT_MAIN_CH_UNPLUG_DET,
467		.flags = IORESOURCE_IRQ,
468	},
469	{
470		.name = "MAIN_CHARGE_PLUG_DET",
471		.start = AB8500_INT_MAIN_CH_PLUG_DET,
472		.end = AB8500_INT_MAIN_CH_PLUG_DET,
473		.flags = IORESOURCE_IRQ,
474	},
475	{
476		.name = "VBUS_DET_R",
477		.start = AB8500_INT_VBUS_DET_R,
478		.end = AB8500_INT_VBUS_DET_R,
479		.flags = IORESOURCE_IRQ,
480	},
481	{
482		.name = "VBUS_DET_F",
483		.start = AB8500_INT_VBUS_DET_F,
484		.end = AB8500_INT_VBUS_DET_F,
485		.flags = IORESOURCE_IRQ,
486	},
487	{
488		.name = "USB_LINK_STATUS",
489		.start = AB8500_INT_USB_LINK_STATUS,
490		.end = AB8500_INT_USB_LINK_STATUS,
491		.flags = IORESOURCE_IRQ,
492	},
493	{
494		.name = "USB_CHARGE_DET_DONE",
495		.start = AB8500_INT_USB_CHG_DET_DONE,
496		.end = AB8500_INT_USB_CHG_DET_DONE,
497		.flags = IORESOURCE_IRQ,
498	},
499	{
500		.name = "VBUS_OVV",
501		.start = AB8500_INT_VBUS_OVV,
502		.end = AB8500_INT_VBUS_OVV,
503		.flags = IORESOURCE_IRQ,
504	},
505	{
506		.name = "USB_CH_TH_PROT_R",
507		.start = AB8500_INT_USB_CH_TH_PROT_R,
508		.end = AB8500_INT_USB_CH_TH_PROT_R,
509		.flags = IORESOURCE_IRQ,
510	},
511	{
512		.name = "USB_CH_TH_PROT_F",
513		.start = AB8500_INT_USB_CH_TH_PROT_F,
514		.end = AB8500_INT_USB_CH_TH_PROT_F,
515		.flags = IORESOURCE_IRQ,
516	},
517	{
518		.name = "MAIN_EXT_CH_NOT_OK",
519		.start = AB8500_INT_MAIN_EXT_CH_NOT_OK,
520		.end = AB8500_INT_MAIN_EXT_CH_NOT_OK,
521		.flags = IORESOURCE_IRQ,
522	},
523	{
524		.name = "MAIN_CH_TH_PROT_R",
525		.start = AB8500_INT_MAIN_CH_TH_PROT_R,
526		.end = AB8500_INT_MAIN_CH_TH_PROT_R,
527		.flags = IORESOURCE_IRQ,
528	},
529	{
530		.name = "MAIN_CH_TH_PROT_F",
531		.start = AB8500_INT_MAIN_CH_TH_PROT_F,
532		.end = AB8500_INT_MAIN_CH_TH_PROT_F,
533		.flags = IORESOURCE_IRQ,
534	},
535	{
536		.name = "USB_CHARGER_NOT_OKR",
537		.start = AB8500_INT_USB_CHARGER_NOT_OK,
538		.end = AB8500_INT_USB_CHARGER_NOT_OK,
539		.flags = IORESOURCE_IRQ,
540	},
541	{
542		.name = "USB_CHARGER_NOT_OKF",
543		.start = AB8500_INT_USB_CHARGER_NOT_OKF,
544		.end = AB8500_INT_USB_CHARGER_NOT_OKF,
545		.flags = IORESOURCE_IRQ,
546	},
547	{
548		.name = "CH_WD_EXP",
549		.start = AB8500_INT_CH_WD_EXP,
550		.end = AB8500_INT_CH_WD_EXP,
551		.flags = IORESOURCE_IRQ,
552	},
553};
554
555static struct resource __devinitdata ab8500_btemp_resources[] = {
556	{
557		.name = "BAT_CTRL_INDB",
558		.start = AB8500_INT_BAT_CTRL_INDB,
559		.end = AB8500_INT_BAT_CTRL_INDB,
560		.flags = IORESOURCE_IRQ,
561	},
562	{
563		.name = "BTEMP_LOW",
564		.start = AB8500_INT_BTEMP_LOW,
565		.end = AB8500_INT_BTEMP_LOW,
566		.flags = IORESOURCE_IRQ,
567	},
568	{
569		.name = "BTEMP_HIGH",
570		.start = AB8500_INT_BTEMP_HIGH,
571		.end = AB8500_INT_BTEMP_HIGH,
572		.flags = IORESOURCE_IRQ,
573	},
574	{
575		.name = "BTEMP_LOW_MEDIUM",
576		.start = AB8500_INT_BTEMP_LOW_MEDIUM,
577		.end = AB8500_INT_BTEMP_LOW_MEDIUM,
578		.flags = IORESOURCE_IRQ,
579	},
580	{
581		.name = "BTEMP_MEDIUM_HIGH",
582		.start = AB8500_INT_BTEMP_MEDIUM_HIGH,
583		.end = AB8500_INT_BTEMP_MEDIUM_HIGH,
584		.flags = IORESOURCE_IRQ,
585	},
586};
587
588static struct resource __devinitdata ab8500_fg_resources[] = {
589	{
590		.name = "NCONV_ACCU",
591		.start = AB8500_INT_CCN_CONV_ACC,
592		.end = AB8500_INT_CCN_CONV_ACC,
593		.flags = IORESOURCE_IRQ,
594	},
595	{
596		.name = "BATT_OVV",
597		.start = AB8500_INT_BATT_OVV,
598		.end = AB8500_INT_BATT_OVV,
599		.flags = IORESOURCE_IRQ,
600	},
601	{
602		.name = "LOW_BAT_F",
603		.start = AB8500_INT_LOW_BAT_F,
604		.end = AB8500_INT_LOW_BAT_F,
605		.flags = IORESOURCE_IRQ,
606	},
607	{
608		.name = "LOW_BAT_R",
609		.start = AB8500_INT_LOW_BAT_R,
610		.end = AB8500_INT_LOW_BAT_R,
611		.flags = IORESOURCE_IRQ,
612	},
613	{
614		.name = "CC_INT_CALIB",
615		.start = AB8500_INT_CC_INT_CALIB,
616		.end = AB8500_INT_CC_INT_CALIB,
617		.flags = IORESOURCE_IRQ,
618	},
619};
620
621static struct resource __devinitdata ab8500_chargalg_resources[] = {};
622
623static struct resource __devinitdata ab8500_debug_resources[] = {
624	{
625		.name	= "IRQ_FIRST",
626		.start	= AB8500_INT_MAIN_EXT_CH_NOT_OK,
627		.end	= AB8500_INT_MAIN_EXT_CH_NOT_OK,
628		.flags	= IORESOURCE_IRQ,
629	},
630	{
631		.name	= "IRQ_LAST",
632		.start	= AB8500_INT_USB_CHARGER_NOT_OKF,
633		.end	= AB8500_INT_USB_CHARGER_NOT_OKF,
634		.flags	= IORESOURCE_IRQ,
635	},
636};
637
638static struct resource __devinitdata ab8500_usb_resources[] = {
639	{
640		.name = "ID_WAKEUP_R",
641		.start = AB8500_INT_ID_WAKEUP_R,
642		.end = AB8500_INT_ID_WAKEUP_R,
643		.flags = IORESOURCE_IRQ,
644	},
645	{
646		.name = "ID_WAKEUP_F",
647		.start = AB8500_INT_ID_WAKEUP_F,
648		.end = AB8500_INT_ID_WAKEUP_F,
649		.flags = IORESOURCE_IRQ,
650	},
651	{
652		.name = "VBUS_DET_F",
653		.start = AB8500_INT_VBUS_DET_F,
654		.end = AB8500_INT_VBUS_DET_F,
655		.flags = IORESOURCE_IRQ,
656	},
657	{
658		.name = "VBUS_DET_R",
659		.start = AB8500_INT_VBUS_DET_R,
660		.end = AB8500_INT_VBUS_DET_R,
661		.flags = IORESOURCE_IRQ,
662	},
663	{
664		.name = "USB_LINK_STATUS",
665		.start = AB8500_INT_USB_LINK_STATUS,
666		.end = AB8500_INT_USB_LINK_STATUS,
667		.flags = IORESOURCE_IRQ,
668	},
669	{
670		.name = "USB_ADP_PROBE_PLUG",
671		.start = AB8500_INT_ADP_PROBE_PLUG,
672		.end = AB8500_INT_ADP_PROBE_PLUG,
673		.flags = IORESOURCE_IRQ,
674	},
675	{
676		.name = "USB_ADP_PROBE_UNPLUG",
677		.start = AB8500_INT_ADP_PROBE_UNPLUG,
678		.end = AB8500_INT_ADP_PROBE_UNPLUG,
679		.flags = IORESOURCE_IRQ,
680	},
681};
682
683static struct resource __devinitdata ab8500_temp_resources[] = {
684	{
685		.name  = "AB8500_TEMP_WARM",
686		.start = AB8500_INT_TEMP_WARM,
687		.end   = AB8500_INT_TEMP_WARM,
688		.flags = IORESOURCE_IRQ,
689	},
690};
691
692static struct mfd_cell __devinitdata ab8500_devs[] = {
693#ifdef CONFIG_DEBUG_FS
694	{
695		.name = "ab8500-debug",
696		.num_resources = ARRAY_SIZE(ab8500_debug_resources),
697		.resources = ab8500_debug_resources,
698	},
699#endif
700	{
701		.name = "ab8500-sysctrl",
702	},
703	{
704		.name = "ab8500-regulator",
705	},
706	{
707		.name = "ab8500-gpio",
708		.num_resources = ARRAY_SIZE(ab8500_gpio_resources),
709		.resources = ab8500_gpio_resources,
710	},
711	{
712		.name = "ab8500-gpadc",
713		.num_resources = ARRAY_SIZE(ab8500_gpadc_resources),
714		.resources = ab8500_gpadc_resources,
715	},
716	{
717		.name = "ab8500-rtc",
718		.num_resources = ARRAY_SIZE(ab8500_rtc_resources),
719		.resources = ab8500_rtc_resources,
720	},
721	{
722		.name = "ab8500-charger",
723		.num_resources = ARRAY_SIZE(ab8500_charger_resources),
724		.resources = ab8500_charger_resources,
725	},
726	{
727		.name = "ab8500-btemp",
728		.num_resources = ARRAY_SIZE(ab8500_btemp_resources),
729		.resources = ab8500_btemp_resources,
730	},
731	{
732		.name = "ab8500-fg",
733		.num_resources = ARRAY_SIZE(ab8500_fg_resources),
734		.resources = ab8500_fg_resources,
735	},
736	{
737		.name = "ab8500-chargalg",
738		.num_resources = ARRAY_SIZE(ab8500_chargalg_resources),
739		.resources = ab8500_chargalg_resources,
740	},
741	{
742		.name = "ab8500-acc-det",
743		.num_resources = ARRAY_SIZE(ab8500_av_acc_detect_resources),
744		.resources = ab8500_av_acc_detect_resources,
745	},
746	{
747		.name = "ab8500-codec",
748	},
749	{
750		.name = "ab8500-usb",
751		.num_resources = ARRAY_SIZE(ab8500_usb_resources),
752		.resources = ab8500_usb_resources,
753	},
754	{
755		.name = "ab8500-poweron-key",
756		.num_resources = ARRAY_SIZE(ab8500_poweronkey_db_resources),
757		.resources = ab8500_poweronkey_db_resources,
758	},
759	{
760		.name = "ab8500-pwm",
761		.id = 1,
762	},
763	{
764		.name = "ab8500-pwm",
765		.id = 2,
766	},
767	{
768		.name = "ab8500-pwm",
769		.id = 3,
770	},
771	{ .name = "ab8500-leds", },
772	{
773		.name = "ab8500-denc",
774	},
775	{
776		.name = "ab8500-temp",
777		.num_resources = ARRAY_SIZE(ab8500_temp_resources),
778		.resources = ab8500_temp_resources,
779	},
780};
781
782static ssize_t show_chip_id(struct device *dev,
783				struct device_attribute *attr, char *buf)
784{
785	struct ab8500 *ab8500;
786
787	ab8500 = dev_get_drvdata(dev);
788	return sprintf(buf, "%#x\n", ab8500 ? ab8500->chip_id : -EINVAL);
789}
790
791/*
792 * ab8500 has switched off due to (SWITCH_OFF_STATUS):
793 * 0x01 Swoff bit programming
794 * 0x02 Thermal protection activation
795 * 0x04 Vbat lower then BattOk falling threshold
796 * 0x08 Watchdog expired
797 * 0x10 Non presence of 32kHz clock
798 * 0x20 Battery level lower than power on reset threshold
799 * 0x40 Power on key 1 pressed longer than 10 seconds
800 * 0x80 DB8500 thermal shutdown
801 */
802static ssize_t show_switch_off_status(struct device *dev,
803				struct device_attribute *attr, char *buf)
804{
805	int ret;
806	u8 value;
807	struct ab8500 *ab8500;
808
809	ab8500 = dev_get_drvdata(dev);
810	ret = get_register_interruptible(ab8500, AB8500_RTC,
811		AB8500_SWITCH_OFF_STATUS, &value);
812	if (ret < 0)
813		return ret;
814	return sprintf(buf, "%#x\n", value);
815}
816
817/*
818 * ab8500 has turned on due to (TURN_ON_STATUS):
819 * 0x01 PORnVbat
820 * 0x02 PonKey1dbF
821 * 0x04 PonKey2dbF
822 * 0x08 RTCAlarm
823 * 0x10 MainChDet
824 * 0x20 VbusDet
825 * 0x40 UsbIDDetect
826 * 0x80 Reserved
827 */
828static ssize_t show_turn_on_status(struct device *dev,
829				struct device_attribute *attr, char *buf)
830{
831	int ret;
832	u8 value;
833	struct ab8500 *ab8500;
834
835	ab8500 = dev_get_drvdata(dev);
836	ret = get_register_interruptible(ab8500, AB8500_SYS_CTRL1_BLOCK,
837		AB8500_TURN_ON_STATUS, &value);
838	if (ret < 0)
839		return ret;
840	return sprintf(buf, "%#x\n", value);
841}
842
843static DEVICE_ATTR(chip_id, S_IRUGO, show_chip_id, NULL);
844static DEVICE_ATTR(switch_off_status, S_IRUGO, show_switch_off_status, NULL);
845static DEVICE_ATTR(turn_on_status, S_IRUGO, show_turn_on_status, NULL);
846
847static struct attribute *ab8500_sysfs_entries[] = {
848	&dev_attr_chip_id.attr,
849	&dev_attr_switch_off_status.attr,
850	&dev_attr_turn_on_status.attr,
851	NULL,
852};
853
854static struct attribute_group ab8500_attr_group = {
855	.attrs	= ab8500_sysfs_entries,
856};
857
858int __devinit ab8500_init(struct ab8500 *ab8500)
859{
860	struct ab8500_platform_data *plat = dev_get_platdata(ab8500->dev);
861	int ret;
862	int i;
863	u8 value;
864
865	if (plat)
866		ab8500->irq_base = plat->irq_base;
867
868	mutex_init(&ab8500->lock);
869	mutex_init(&ab8500->irq_lock);
870
871	ret = get_register_interruptible(ab8500, AB8500_MISC,
872		AB8500_REV_REG, &value);
873	if (ret < 0)
874		return ret;
875
876	switch (value) {
877	case AB8500_CUT1P0:
878	case AB8500_CUT1P1:
879	case AB8500_CUT2P0:
880	case AB8500_CUT3P0:
881	case AB8500_CUT3P3:
882		dev_info(ab8500->dev, "detected chip, revision: %#x\n", value);
883		break;
884	default:
885		dev_err(ab8500->dev, "unknown chip, revision: %#x\n", value);
886		return -EINVAL;
887	}
888	ab8500->chip_id = value;
889
890	/*
891	 * ab8500 has switched off due to (SWITCH_OFF_STATUS):
892	 * 0x01 Swoff bit programming
893	 * 0x02 Thermal protection activation
894	 * 0x04 Vbat lower then BattOk falling threshold
895	 * 0x08 Watchdog expired
896	 * 0x10 Non presence of 32kHz clock
897	 * 0x20 Battery level lower than power on reset threshold
898	 * 0x40 Power on key 1 pressed longer than 10 seconds
899	 * 0x80 DB8500 thermal shutdown
900	 */
901
902	ret = get_register_interruptible(ab8500, AB8500_RTC,
903		AB8500_SWITCH_OFF_STATUS, &value);
904	if (ret < 0)
905		return ret;
906	dev_info(ab8500->dev, "switch off status: %#x", value);
907
908	if (plat && plat->init)
909		plat->init(ab8500);
910
911	/* Clear and mask all interrupts */
912	for (i = 0; i < AB8500_NUM_IRQ_REGS; i++) {
913		/* Interrupt register 12 doesn't exist prior to version 2.0 */
914		if (ab8500_irq_regoffset[i] == 11 &&
915			ab8500->chip_id < AB8500_CUT2P0)
916			continue;
917
918		get_register_interruptible(ab8500, AB8500_INTERRUPT,
919			AB8500_IT_LATCH1_REG + ab8500_irq_regoffset[i],
920			&value);
921		set_register_interruptible(ab8500, AB8500_INTERRUPT,
922			AB8500_IT_MASK1_REG + ab8500_irq_regoffset[i], 0xff);
923	}
924
925	ret = abx500_register_ops(ab8500->dev, &ab8500_ops);
926	if (ret)
927		return ret;
928
929	for (i = 0; i < AB8500_NUM_IRQ_REGS; i++)
930		ab8500->mask[i] = ab8500->oldmask[i] = 0xff;
931
932	if (ab8500->irq_base) {
933		ret = ab8500_irq_init(ab8500);
934		if (ret)
935			return ret;
936
937		ret = request_threaded_irq(ab8500->irq, NULL, ab8500_irq,
938					   IRQF_ONESHOT | IRQF_NO_SUSPEND,
939					   "ab8500", ab8500);
940		if (ret)
941			goto out_removeirq;
942	}
943
944	ret = mfd_add_devices(ab8500->dev, 0, ab8500_devs,
945			      ARRAY_SIZE(ab8500_devs), NULL,
946			      ab8500->irq_base);
947	if (ret)
948		goto out_freeirq;
949
950	ret = sysfs_create_group(&ab8500->dev->kobj, &ab8500_attr_group);
951	if (ret)
952		dev_err(ab8500->dev, "error creating sysfs entries\n");
953
954	return ret;
955
956out_freeirq:
957	if (ab8500->irq_base) {
958		free_irq(ab8500->irq, ab8500);
959out_removeirq:
960		ab8500_irq_remove(ab8500);
961	}
962	return ret;
963}
964
965int __devexit ab8500_exit(struct ab8500 *ab8500)
966{
967	sysfs_remove_group(&ab8500->dev->kobj, &ab8500_attr_group);
968	mfd_remove_devices(ab8500->dev);
969	if (ab8500->irq_base) {
970		free_irq(ab8500->irq, ab8500);
971		ab8500_irq_remove(ab8500);
972	}
973
974	return 0;
975}
976
977MODULE_AUTHOR("Mattias Wallin, Srinidhi Kasagar, Rabin Vincent");
978MODULE_DESCRIPTION("AB8500 MFD core");
979MODULE_LICENSE("GPL v2");
980