Commit | Line | Data |
---|---|---|
f52046b1 BR |
1 | /* NXP PCF50633 Power Management Unit (PMU) driver |
2 | * | |
3 | * (C) 2006-2008 by Openmoko, Inc. | |
4 | * Author: Harald Welte <laforge@openmoko.org> | |
5 | * Balaji Rao <balajirrao@openmoko.org> | |
6 | * All rights reserved. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License as published by the | |
10 | * Free Software Foundation; either version 2 of the License, or (at your | |
11 | * option) any later version. | |
12 | * | |
13 | */ | |
14 | ||
15 | #include <linux/kernel.h> | |
16 | #include <linux/device.h> | |
17 | #include <linux/sysfs.h> | |
18 | #include <linux/device.h> | |
19 | #include <linux/module.h> | |
20 | #include <linux/types.h> | |
21 | #include <linux/interrupt.h> | |
22 | #include <linux/workqueue.h> | |
23 | #include <linux/platform_device.h> | |
24 | #include <linux/i2c.h> | |
25 | #include <linux/irq.h> | |
26 | ||
27 | #include <linux/mfd/pcf50633/core.h> | |
28 | ||
29 | /* Two MBCS registers used during cold start */ | |
30 | #define PCF50633_REG_MBCS1 0x4b | |
31 | #define PCF50633_REG_MBCS2 0x4c | |
32 | #define PCF50633_MBCS1_USBPRES 0x01 | |
33 | #define PCF50633_MBCS1_ADAPTPRES 0x01 | |
34 | ||
35 | static int __pcf50633_read(struct pcf50633 *pcf, u8 reg, int num, u8 *data) | |
36 | { | |
37 | int ret; | |
38 | ||
39 | ret = i2c_smbus_read_i2c_block_data(pcf->i2c_client, reg, | |
40 | num, data); | |
41 | if (ret < 0) | |
42 | dev_err(pcf->dev, "Error reading %d regs at %d\n", num, reg); | |
43 | ||
44 | return ret; | |
45 | } | |
46 | ||
47 | static int __pcf50633_write(struct pcf50633 *pcf, u8 reg, int num, u8 *data) | |
48 | { | |
49 | int ret; | |
50 | ||
51 | ret = i2c_smbus_write_i2c_block_data(pcf->i2c_client, reg, | |
52 | num, data); | |
53 | if (ret < 0) | |
54 | dev_err(pcf->dev, "Error writing %d regs at %d\n", num, reg); | |
55 | ||
56 | return ret; | |
57 | ||
58 | } | |
59 | ||
60 | /* Read a block of upto 32 regs */ | |
61 | int pcf50633_read_block(struct pcf50633 *pcf, u8 reg, | |
62 | int nr_regs, u8 *data) | |
63 | { | |
64 | int ret; | |
65 | ||
66 | mutex_lock(&pcf->lock); | |
67 | ret = __pcf50633_read(pcf, reg, nr_regs, data); | |
68 | mutex_unlock(&pcf->lock); | |
69 | ||
70 | return ret; | |
71 | } | |
72 | EXPORT_SYMBOL_GPL(pcf50633_read_block); | |
73 | ||
74 | /* Write a block of upto 32 regs */ | |
75 | int pcf50633_write_block(struct pcf50633 *pcf , u8 reg, | |
76 | int nr_regs, u8 *data) | |
77 | { | |
78 | int ret; | |
79 | ||
80 | mutex_lock(&pcf->lock); | |
81 | ret = __pcf50633_write(pcf, reg, nr_regs, data); | |
82 | mutex_unlock(&pcf->lock); | |
83 | ||
84 | return ret; | |
85 | } | |
86 | EXPORT_SYMBOL_GPL(pcf50633_write_block); | |
87 | ||
88 | u8 pcf50633_reg_read(struct pcf50633 *pcf, u8 reg) | |
89 | { | |
90 | u8 val; | |
91 | ||
92 | mutex_lock(&pcf->lock); | |
93 | __pcf50633_read(pcf, reg, 1, &val); | |
94 | mutex_unlock(&pcf->lock); | |
95 | ||
96 | return val; | |
97 | } | |
98 | EXPORT_SYMBOL_GPL(pcf50633_reg_read); | |
99 | ||
100 | int pcf50633_reg_write(struct pcf50633 *pcf, u8 reg, u8 val) | |
101 | { | |
102 | int ret; | |
103 | ||
104 | mutex_lock(&pcf->lock); | |
105 | ret = __pcf50633_write(pcf, reg, 1, &val); | |
106 | mutex_unlock(&pcf->lock); | |
107 | ||
108 | return ret; | |
109 | } | |
110 | EXPORT_SYMBOL_GPL(pcf50633_reg_write); | |
111 | ||
112 | int pcf50633_reg_set_bit_mask(struct pcf50633 *pcf, u8 reg, u8 mask, u8 val) | |
113 | { | |
114 | int ret; | |
115 | u8 tmp; | |
116 | ||
117 | val &= mask; | |
118 | ||
119 | mutex_lock(&pcf->lock); | |
120 | ret = __pcf50633_read(pcf, reg, 1, &tmp); | |
121 | if (ret < 0) | |
122 | goto out; | |
123 | ||
124 | tmp &= ~mask; | |
125 | tmp |= val; | |
126 | ret = __pcf50633_write(pcf, reg, 1, &tmp); | |
127 | ||
128 | out: | |
129 | mutex_unlock(&pcf->lock); | |
130 | ||
131 | return ret; | |
132 | } | |
133 | EXPORT_SYMBOL_GPL(pcf50633_reg_set_bit_mask); | |
134 | ||
135 | int pcf50633_reg_clear_bits(struct pcf50633 *pcf, u8 reg, u8 val) | |
136 | { | |
137 | int ret; | |
138 | u8 tmp; | |
139 | ||
140 | mutex_lock(&pcf->lock); | |
141 | ret = __pcf50633_read(pcf, reg, 1, &tmp); | |
142 | if (ret < 0) | |
143 | goto out; | |
144 | ||
145 | tmp &= ~val; | |
146 | ret = __pcf50633_write(pcf, reg, 1, &tmp); | |
147 | ||
148 | out: | |
149 | mutex_unlock(&pcf->lock); | |
150 | ||
151 | return ret; | |
152 | } | |
153 | EXPORT_SYMBOL_GPL(pcf50633_reg_clear_bits); | |
154 | ||
155 | /* sysfs attributes */ | |
156 | static ssize_t show_dump_regs(struct device *dev, struct device_attribute *attr, | |
157 | char *buf) | |
158 | { | |
159 | struct pcf50633 *pcf = dev_get_drvdata(dev); | |
160 | u8 dump[16]; | |
161 | int n, n1, idx = 0; | |
162 | char *buf1 = buf; | |
163 | static u8 address_no_read[] = { /* must be ascending */ | |
164 | PCF50633_REG_INT1, | |
165 | PCF50633_REG_INT2, | |
166 | PCF50633_REG_INT3, | |
167 | PCF50633_REG_INT4, | |
168 | PCF50633_REG_INT5, | |
169 | 0 /* terminator */ | |
170 | }; | |
171 | ||
172 | for (n = 0; n < 256; n += sizeof(dump)) { | |
173 | for (n1 = 0; n1 < sizeof(dump); n1++) | |
174 | if (n == address_no_read[idx]) { | |
175 | idx++; | |
176 | dump[n1] = 0x00; | |
177 | } else | |
178 | dump[n1] = pcf50633_reg_read(pcf, n + n1); | |
179 | ||
180 | hex_dump_to_buffer(dump, sizeof(dump), 16, 1, buf1, 128, 0); | |
181 | buf1 += strlen(buf1); | |
182 | *buf1++ = '\n'; | |
183 | *buf1 = '\0'; | |
184 | } | |
185 | ||
186 | return buf1 - buf; | |
187 | } | |
188 | static DEVICE_ATTR(dump_regs, 0400, show_dump_regs, NULL); | |
189 | ||
190 | static ssize_t show_resume_reason(struct device *dev, | |
191 | struct device_attribute *attr, char *buf) | |
192 | { | |
193 | struct pcf50633 *pcf = dev_get_drvdata(dev); | |
194 | int n; | |
195 | ||
196 | n = sprintf(buf, "%02x%02x%02x%02x%02x\n", | |
197 | pcf->resume_reason[0], | |
198 | pcf->resume_reason[1], | |
199 | pcf->resume_reason[2], | |
200 | pcf->resume_reason[3], | |
201 | pcf->resume_reason[4]); | |
202 | ||
203 | return n; | |
204 | } | |
205 | static DEVICE_ATTR(resume_reason, 0400, show_resume_reason, NULL); | |
206 | ||
207 | static struct attribute *pcf_sysfs_entries[] = { | |
208 | &dev_attr_dump_regs.attr, | |
209 | &dev_attr_resume_reason.attr, | |
210 | NULL, | |
211 | }; | |
212 | ||
213 | static struct attribute_group pcf_attr_group = { | |
214 | .name = NULL, /* put in device directory */ | |
215 | .attrs = pcf_sysfs_entries, | |
216 | }; | |
217 | ||
218 | int pcf50633_register_irq(struct pcf50633 *pcf, int irq, | |
219 | void (*handler) (int, void *), void *data) | |
220 | { | |
221 | if (irq < 0 || irq > PCF50633_NUM_IRQ || !handler) | |
222 | return -EINVAL; | |
223 | ||
224 | if (WARN_ON(pcf->irq_handler[irq].handler)) | |
225 | return -EBUSY; | |
226 | ||
227 | mutex_lock(&pcf->lock); | |
228 | pcf->irq_handler[irq].handler = handler; | |
229 | pcf->irq_handler[irq].data = data; | |
230 | mutex_unlock(&pcf->lock); | |
231 | ||
232 | return 0; | |
233 | } | |
234 | EXPORT_SYMBOL_GPL(pcf50633_register_irq); | |
235 | ||
236 | int pcf50633_free_irq(struct pcf50633 *pcf, int irq) | |
237 | { | |
238 | if (irq < 0 || irq > PCF50633_NUM_IRQ) | |
239 | return -EINVAL; | |
240 | ||
241 | mutex_lock(&pcf->lock); | |
242 | pcf->irq_handler[irq].handler = NULL; | |
243 | mutex_unlock(&pcf->lock); | |
244 | ||
245 | return 0; | |
246 | } | |
247 | EXPORT_SYMBOL_GPL(pcf50633_free_irq); | |
248 | ||
249 | static int __pcf50633_irq_mask_set(struct pcf50633 *pcf, int irq, u8 mask) | |
250 | { | |
251 | u8 reg, bits, tmp; | |
252 | int ret = 0, idx; | |
253 | ||
254 | idx = irq >> 3; | |
255 | reg = PCF50633_REG_INT1M + idx; | |
256 | bits = 1 << (irq & 0x07); | |
257 | ||
258 | mutex_lock(&pcf->lock); | |
259 | ||
260 | if (mask) { | |
261 | ret = __pcf50633_read(pcf, reg, 1, &tmp); | |
262 | if (ret < 0) | |
263 | goto out; | |
264 | ||
265 | tmp |= bits; | |
266 | ||
267 | ret = __pcf50633_write(pcf, reg, 1, &tmp); | |
268 | if (ret < 0) | |
269 | goto out; | |
270 | ||
271 | pcf->mask_regs[idx] &= ~bits; | |
272 | pcf->mask_regs[idx] |= bits; | |
273 | } else { | |
274 | ret = __pcf50633_read(pcf, reg, 1, &tmp); | |
275 | if (ret < 0) | |
276 | goto out; | |
277 | ||
278 | tmp &= ~bits; | |
279 | ||
280 | ret = __pcf50633_write(pcf, reg, 1, &tmp); | |
281 | if (ret < 0) | |
282 | goto out; | |
283 | ||
284 | pcf->mask_regs[idx] &= ~bits; | |
285 | } | |
286 | out: | |
287 | mutex_unlock(&pcf->lock); | |
288 | ||
289 | return ret; | |
290 | } | |
291 | ||
292 | int pcf50633_irq_mask(struct pcf50633 *pcf, int irq) | |
293 | { | |
294 | dev_info(pcf->dev, "Masking IRQ %d\n", irq); | |
295 | ||
296 | return __pcf50633_irq_mask_set(pcf, irq, 1); | |
297 | } | |
298 | EXPORT_SYMBOL_GPL(pcf50633_irq_mask); | |
299 | ||
300 | int pcf50633_irq_unmask(struct pcf50633 *pcf, int irq) | |
301 | { | |
302 | dev_info(pcf->dev, "Unmasking IRQ %d\n", irq); | |
303 | ||
304 | return __pcf50633_irq_mask_set(pcf, irq, 0); | |
305 | } | |
306 | EXPORT_SYMBOL_GPL(pcf50633_irq_unmask); | |
307 | ||
308 | int pcf50633_irq_mask_get(struct pcf50633 *pcf, int irq) | |
309 | { | |
310 | u8 reg, bits; | |
311 | ||
312 | reg = irq >> 3; | |
313 | bits = 1 << (irq & 0x07); | |
314 | ||
315 | return pcf->mask_regs[reg] & bits; | |
316 | } | |
317 | EXPORT_SYMBOL_GPL(pcf50633_irq_mask_get); | |
318 | ||
319 | static void pcf50633_irq_call_handler(struct pcf50633 *pcf, int irq) | |
320 | { | |
321 | if (pcf->irq_handler[irq].handler) | |
322 | pcf->irq_handler[irq].handler(irq, pcf->irq_handler[irq].data); | |
323 | } | |
324 | ||
325 | /* Maximum amount of time ONKEY is held before emergency action is taken */ | |
326 | #define PCF50633_ONKEY1S_TIMEOUT 8 | |
327 | ||
328 | static void pcf50633_irq_worker(struct work_struct *work) | |
329 | { | |
330 | struct pcf50633 *pcf; | |
331 | int ret, i, j; | |
332 | u8 pcf_int[5], chgstat; | |
333 | ||
334 | pcf = container_of(work, struct pcf50633, irq_work); | |
335 | ||
336 | /* Read the 5 INT regs in one transaction */ | |
337 | ret = pcf50633_read_block(pcf, PCF50633_REG_INT1, | |
338 | ARRAY_SIZE(pcf_int), pcf_int); | |
339 | if (ret != ARRAY_SIZE(pcf_int)) { | |
340 | dev_err(pcf->dev, "Error reading INT registers\n"); | |
341 | ||
342 | /* | |
343 | * If this doesn't ACK the interrupt to the chip, we'll be | |
344 | * called once again as we're level triggered. | |
345 | */ | |
346 | goto out; | |
347 | } | |
348 | ||
349 | /* We immediately read the usb and adapter status. We thus make sure | |
350 | * only of USBINS/USBREM IRQ handlers are called */ | |
351 | if (pcf_int[0] & (PCF50633_INT1_USBINS | PCF50633_INT1_USBREM)) { | |
352 | chgstat = pcf50633_reg_read(pcf, PCF50633_REG_MBCS2); | |
353 | if (chgstat & (0x3 << 4)) | |
354 | pcf_int[0] &= ~(1 << PCF50633_INT1_USBREM); | |
355 | else | |
356 | pcf_int[0] &= ~(1 << PCF50633_INT1_USBINS); | |
357 | } | |
358 | ||
359 | /* Make sure only one of ADPINS or ADPREM is set */ | |
360 | if (pcf_int[0] & (PCF50633_INT1_ADPINS | PCF50633_INT1_ADPREM)) { | |
361 | chgstat = pcf50633_reg_read(pcf, PCF50633_REG_MBCS2); | |
362 | if (chgstat & (0x3 << 4)) | |
363 | pcf_int[0] &= ~(1 << PCF50633_INT1_ADPREM); | |
364 | else | |
365 | pcf_int[0] &= ~(1 << PCF50633_INT1_ADPINS); | |
366 | } | |
367 | ||
368 | dev_dbg(pcf->dev, "INT1=0x%02x INT2=0x%02x INT3=0x%02x " | |
369 | "INT4=0x%02x INT5=0x%02x\n", pcf_int[0], | |
370 | pcf_int[1], pcf_int[2], pcf_int[3], pcf_int[4]); | |
371 | ||
372 | /* Some revisions of the chip don't have a 8s standby mode on | |
373 | * ONKEY1S press. We try to manually do it in such cases. */ | |
374 | if ((pcf_int[0] & PCF50633_INT1_SECOND) && pcf->onkey1s_held) { | |
375 | dev_info(pcf->dev, "ONKEY1S held for %d secs\n", | |
376 | pcf->onkey1s_held); | |
377 | if (pcf->onkey1s_held++ == PCF50633_ONKEY1S_TIMEOUT) | |
378 | if (pcf->pdata->force_shutdown) | |
379 | pcf->pdata->force_shutdown(pcf); | |
380 | } | |
381 | ||
382 | if (pcf_int[2] & PCF50633_INT3_ONKEY1S) { | |
383 | dev_info(pcf->dev, "ONKEY1S held\n"); | |
384 | pcf->onkey1s_held = 1 ; | |
385 | ||
386 | /* Unmask IRQ_SECOND */ | |
387 | pcf50633_reg_clear_bits(pcf, PCF50633_REG_INT1M, | |
388 | PCF50633_INT1_SECOND); | |
389 | ||
390 | /* Unmask IRQ_ONKEYR */ | |
391 | pcf50633_reg_clear_bits(pcf, PCF50633_REG_INT2M, | |
392 | PCF50633_INT2_ONKEYR); | |
393 | } | |
394 | ||
395 | if ((pcf_int[1] & PCF50633_INT2_ONKEYR) && pcf->onkey1s_held) { | |
396 | pcf->onkey1s_held = 0; | |
397 | ||
398 | /* Mask SECOND and ONKEYR interrupts */ | |
399 | if (pcf->mask_regs[0] & PCF50633_INT1_SECOND) | |
400 | pcf50633_reg_set_bit_mask(pcf, | |
401 | PCF50633_REG_INT1M, | |
402 | PCF50633_INT1_SECOND, | |
403 | PCF50633_INT1_SECOND); | |
404 | ||
405 | if (pcf->mask_regs[1] & PCF50633_INT2_ONKEYR) | |
406 | pcf50633_reg_set_bit_mask(pcf, | |
407 | PCF50633_REG_INT2M, | |
408 | PCF50633_INT2_ONKEYR, | |
409 | PCF50633_INT2_ONKEYR); | |
410 | } | |
411 | ||
412 | /* Have we just resumed ? */ | |
413 | if (pcf->is_suspended) { | |
414 | pcf->is_suspended = 0; | |
415 | ||
416 | /* Set the resume reason filtering out non resumers */ | |
417 | for (i = 0; i < ARRAY_SIZE(pcf_int); i++) | |
418 | pcf->resume_reason[i] = pcf_int[i] & | |
419 | pcf->pdata->resumers[i]; | |
420 | ||
421 | /* Make sure we don't pass on any ONKEY events to | |
422 | * userspace now */ | |
423 | pcf_int[1] &= ~(PCF50633_INT2_ONKEYR | PCF50633_INT2_ONKEYF); | |
424 | } | |
425 | ||
426 | for (i = 0; i < ARRAY_SIZE(pcf_int); i++) { | |
427 | /* Unset masked interrupts */ | |
428 | pcf_int[i] &= ~pcf->mask_regs[i]; | |
429 | ||
430 | for (j = 0; j < 8 ; j++) | |
431 | if (pcf_int[i] & (1 << j)) | |
432 | pcf50633_irq_call_handler(pcf, (i * 8) + j); | |
433 | } | |
434 | ||
435 | out: | |
436 | put_device(pcf->dev); | |
437 | enable_irq(pcf->irq); | |
438 | } | |
439 | ||
440 | static irqreturn_t pcf50633_irq(int irq, void *data) | |
441 | { | |
442 | struct pcf50633 *pcf = data; | |
443 | ||
444 | dev_dbg(pcf->dev, "pcf50633_irq\n"); | |
445 | ||
446 | get_device(pcf->dev); | |
447 | disable_irq(pcf->irq); | |
448 | schedule_work(&pcf->irq_work); | |
449 | ||
450 | return IRQ_HANDLED; | |
451 | } | |
452 | ||
453 | static void | |
454 | pcf50633_client_dev_register(struct pcf50633 *pcf, const char *name, | |
455 | struct platform_device **pdev) | |
456 | { | |
457 | struct pcf50633_subdev_pdata *subdev_pdata; | |
458 | int ret; | |
459 | ||
460 | *pdev = platform_device_alloc(name, -1); | |
461 | if (!*pdev) { | |
462 | dev_err(pcf->dev, "Falied to allocate %s\n", name); | |
463 | return; | |
464 | } | |
465 | ||
466 | subdev_pdata = kmalloc(sizeof(*subdev_pdata), GFP_KERNEL); | |
467 | if (!subdev_pdata) { | |
468 | dev_err(pcf->dev, "Error allocating subdev pdata\n"); | |
469 | platform_device_put(*pdev); | |
470 | } | |
471 | ||
472 | subdev_pdata->pcf = pcf; | |
473 | platform_device_add_data(*pdev, subdev_pdata, sizeof(*subdev_pdata)); | |
474 | ||
475 | (*pdev)->dev.parent = pcf->dev; | |
476 | ||
477 | ret = platform_device_add(*pdev); | |
478 | if (ret) { | |
479 | dev_err(pcf->dev, "Failed to register %s: %d\n", name, ret); | |
480 | platform_device_put(*pdev); | |
481 | *pdev = NULL; | |
482 | } | |
483 | } | |
484 | ||
485 | #ifdef CONFIG_PM | |
486 | static int pcf50633_suspend(struct device *dev, pm_message_t state) | |
487 | { | |
488 | struct pcf50633 *pcf; | |
489 | int ret = 0, i; | |
490 | u8 res[5]; | |
491 | ||
492 | pcf = dev_get_drvdata(dev); | |
493 | ||
494 | /* Make sure our interrupt handlers are not called | |
495 | * henceforth */ | |
496 | disable_irq(pcf->irq); | |
497 | ||
498 | /* Make sure that any running IRQ worker has quit */ | |
499 | cancel_work_sync(&pcf->irq_work); | |
500 | ||
501 | /* Save the masks */ | |
502 | ret = pcf50633_read_block(pcf, PCF50633_REG_INT1M, | |
503 | ARRAY_SIZE(pcf->suspend_irq_masks), | |
504 | pcf->suspend_irq_masks); | |
505 | if (ret < 0) { | |
506 | dev_err(pcf->dev, "error saving irq masks\n"); | |
507 | goto out; | |
508 | } | |
509 | ||
510 | /* Write wakeup irq masks */ | |
511 | for (i = 0; i < ARRAY_SIZE(res); i++) | |
512 | res[i] = ~pcf->pdata->resumers[i]; | |
513 | ||
514 | ret = pcf50633_write_block(pcf, PCF50633_REG_INT1M, | |
515 | ARRAY_SIZE(res), &res[0]); | |
516 | if (ret < 0) { | |
517 | dev_err(pcf->dev, "error writing wakeup irq masks\n"); | |
518 | goto out; | |
519 | } | |
520 | ||
521 | pcf->is_suspended = 1; | |
522 | ||
523 | out: | |
524 | return ret; | |
525 | } | |
526 | ||
527 | static int pcf50633_resume(struct device *dev) | |
528 | { | |
529 | struct pcf50633 *pcf; | |
530 | int ret; | |
531 | ||
532 | pcf = dev_get_drvdata(dev); | |
533 | ||
534 | /* Write the saved mask registers */ | |
535 | ret = pcf50633_write_block(pcf, PCF50633_REG_INT1M, | |
536 | ARRAY_SIZE(pcf->suspend_irq_masks), | |
537 | pcf->suspend_irq_masks); | |
538 | if (ret < 0) | |
539 | dev_err(pcf->dev, "Error restoring saved suspend masks\n"); | |
540 | ||
541 | /* Restore regulators' state */ | |
542 | ||
543 | ||
544 | get_device(pcf->dev); | |
545 | ||
546 | /* | |
547 | * Clear any pending interrupts and set resume reason if any. | |
548 | * This will leave with enable_irq() | |
549 | */ | |
550 | pcf50633_irq_worker(&pcf->irq_work); | |
551 | ||
552 | return 0; | |
553 | } | |
554 | #else | |
555 | #define pcf50633_suspend NULL | |
556 | #define pcf50633_resume NULL | |
557 | #endif | |
558 | ||
559 | static int __devinit pcf50633_probe(struct i2c_client *client, | |
560 | const struct i2c_device_id *ids) | |
561 | { | |
562 | struct pcf50633 *pcf; | |
563 | struct pcf50633_platform_data *pdata = client->dev.platform_data; | |
564 | int i, ret = 0; | |
565 | int version, variant; | |
566 | ||
567 | pcf = kzalloc(sizeof(*pcf), GFP_KERNEL); | |
568 | if (!pcf) | |
569 | return -ENOMEM; | |
570 | ||
571 | pcf->pdata = pdata; | |
572 | ||
573 | mutex_init(&pcf->lock); | |
574 | ||
575 | i2c_set_clientdata(client, pcf); | |
576 | pcf->dev = &client->dev; | |
577 | pcf->i2c_client = client; | |
578 | pcf->irq = client->irq; | |
579 | ||
580 | INIT_WORK(&pcf->irq_work, pcf50633_irq_worker); | |
581 | ||
582 | version = pcf50633_reg_read(pcf, 0); | |
583 | variant = pcf50633_reg_read(pcf, 1); | |
584 | if (version < 0 || variant < 0) { | |
585 | dev_err(pcf->dev, "Unable to probe pcf50633\n"); | |
586 | ret = -ENODEV; | |
587 | goto err; | |
588 | } | |
589 | ||
590 | dev_info(pcf->dev, "Probed device version %d variant %d\n", | |
591 | version, variant); | |
592 | ||
593 | /* Enable all interrupts except RTC SECOND */ | |
594 | pcf->mask_regs[0] = 0x80; | |
595 | pcf50633_reg_write(pcf, PCF50633_REG_INT1M, pcf->mask_regs[0]); | |
596 | pcf50633_reg_write(pcf, PCF50633_REG_INT2M, 0x00); | |
597 | pcf50633_reg_write(pcf, PCF50633_REG_INT3M, 0x00); | |
598 | pcf50633_reg_write(pcf, PCF50633_REG_INT4M, 0x00); | |
599 | pcf50633_reg_write(pcf, PCF50633_REG_INT5M, 0x00); | |
600 | ||
601 | /* Create sub devices */ | |
602 | pcf50633_client_dev_register(pcf, "pcf50633-input", | |
603 | &pcf->input_pdev); | |
604 | pcf50633_client_dev_register(pcf, "pcf50633-rtc", | |
605 | &pcf->rtc_pdev); | |
606 | pcf50633_client_dev_register(pcf, "pcf50633-mbc", | |
607 | &pcf->mbc_pdev); | |
608 | pcf50633_client_dev_register(pcf, "pcf50633-adc", | |
609 | &pcf->adc_pdev); | |
610 | ||
611 | for (i = 0; i < PCF50633_NUM_REGULATORS; i++) { | |
612 | struct platform_device *pdev; | |
613 | ||
614 | pdev = platform_device_alloc("pcf50633-regltr", i); | |
615 | if (!pdev) { | |
616 | dev_err(pcf->dev, "Cannot create regulator\n"); | |
617 | continue; | |
618 | } | |
619 | ||
620 | pdev->dev.parent = pcf->dev; | |
621 | pdev->dev.platform_data = &pdata->reg_init_data[i]; | |
622 | pdev->dev.driver_data = pcf; | |
623 | pcf->regulator_pdev[i] = pdev; | |
624 | ||
625 | platform_device_add(pdev); | |
626 | } | |
627 | ||
628 | if (client->irq) { | |
f52046b1 BR |
629 | ret = request_irq(client->irq, pcf50633_irq, |
630 | IRQF_TRIGGER_LOW, "pcf50633", pcf); | |
631 | ||
632 | if (ret) { | |
633 | dev_err(pcf->dev, "Failed to request IRQ %d\n", ret); | |
634 | goto err; | |
635 | } | |
636 | } else { | |
637 | dev_err(pcf->dev, "No IRQ configured\n"); | |
638 | goto err; | |
639 | } | |
640 | ||
641 | if (enable_irq_wake(client->irq) < 0) | |
642 | dev_err(pcf->dev, "IRQ %u cannot be enabled as wake-up source" | |
643 | "in this hardware revision", client->irq); | |
644 | ||
645 | ret = sysfs_create_group(&client->dev.kobj, &pcf_attr_group); | |
646 | if (ret) | |
647 | dev_err(pcf->dev, "error creating sysfs entries\n"); | |
648 | ||
649 | if (pdata->probe_done) | |
650 | pdata->probe_done(pcf); | |
651 | ||
652 | return 0; | |
653 | ||
654 | err: | |
655 | kfree(pcf); | |
656 | return ret; | |
657 | } | |
658 | ||
659 | static int __devexit pcf50633_remove(struct i2c_client *client) | |
660 | { | |
661 | struct pcf50633 *pcf = i2c_get_clientdata(client); | |
662 | int i; | |
663 | ||
664 | free_irq(pcf->irq, pcf); | |
665 | ||
666 | platform_device_unregister(pcf->input_pdev); | |
667 | platform_device_unregister(pcf->rtc_pdev); | |
668 | platform_device_unregister(pcf->mbc_pdev); | |
669 | platform_device_unregister(pcf->adc_pdev); | |
670 | ||
671 | for (i = 0; i < PCF50633_NUM_REGULATORS; i++) | |
672 | platform_device_unregister(pcf->regulator_pdev[i]); | |
673 | ||
674 | kfree(pcf); | |
675 | ||
676 | return 0; | |
677 | } | |
678 | ||
679 | static struct i2c_device_id pcf50633_id_table[] = { | |
680 | {"pcf50633", 0x73}, | |
681 | }; | |
682 | ||
683 | static struct i2c_driver pcf50633_driver = { | |
684 | .driver = { | |
685 | .name = "pcf50633", | |
686 | .suspend = pcf50633_suspend, | |
687 | .resume = pcf50633_resume, | |
688 | }, | |
689 | .id_table = pcf50633_id_table, | |
690 | .probe = pcf50633_probe, | |
691 | .remove = __devexit_p(pcf50633_remove), | |
692 | }; | |
693 | ||
694 | static int __init pcf50633_init(void) | |
695 | { | |
696 | return i2c_add_driver(&pcf50633_driver); | |
697 | } | |
698 | ||
699 | static void __exit pcf50633_exit(void) | |
700 | { | |
701 | i2c_del_driver(&pcf50633_driver); | |
702 | } | |
703 | ||
704 | MODULE_DESCRIPTION("I2C chip driver for NXP PCF50633 PMU"); | |
705 | MODULE_AUTHOR("Harald Welte <laforge@openmoko.org>"); | |
706 | MODULE_LICENSE("GPL"); | |
707 | ||
708 | module_init(pcf50633_init); | |
709 | module_exit(pcf50633_exit); |