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23#include <linux/kernel.h>
24#include <linux/module.h>
25#include <linux/err.h>
26#include <linux/i2c.h>
27#include <linux/mfd/core.h>
28#include <linux/mfd/88pm80x.h>
29#include <linux/slab.h>
30
31
32#define PM800_INT_STATUS1 (0x05)
33#define PM800_ONKEY_INT_STS1 (1 << 0)
34#define PM800_EXTON_INT_STS1 (1 << 1)
35#define PM800_CHG_INT_STS1 (1 << 2)
36#define PM800_BAT_INT_STS1 (1 << 3)
37#define PM800_RTC_INT_STS1 (1 << 4)
38#define PM800_CLASSD_OC_INT_STS1 (1 << 5)
39
40#define PM800_INT_STATUS2 (0x06)
41#define PM800_VBAT_INT_STS2 (1 << 0)
42#define PM800_VSYS_INT_STS2 (1 << 1)
43#define PM800_VCHG_INT_STS2 (1 << 2)
44#define PM800_TINT_INT_STS2 (1 << 3)
45#define PM800_GPADC0_INT_STS2 (1 << 4)
46#define PM800_TBAT_INT_STS2 (1 << 5)
47#define PM800_GPADC2_INT_STS2 (1 << 6)
48#define PM800_GPADC3_INT_STS2 (1 << 7)
49
50#define PM800_INT_STATUS3 (0x07)
51
52#define PM800_INT_STATUS4 (0x08)
53#define PM800_GPIO0_INT_STS4 (1 << 0)
54#define PM800_GPIO1_INT_STS4 (1 << 1)
55#define PM800_GPIO2_INT_STS4 (1 << 2)
56#define PM800_GPIO3_INT_STS4 (1 << 3)
57#define PM800_GPIO4_INT_STS4 (1 << 4)
58
59#define PM800_INT_ENA_1 (0x09)
60#define PM800_ONKEY_INT_ENA1 (1 << 0)
61#define PM800_EXTON_INT_ENA1 (1 << 1)
62#define PM800_CHG_INT_ENA1 (1 << 2)
63#define PM800_BAT_INT_ENA1 (1 << 3)
64#define PM800_RTC_INT_ENA1 (1 << 4)
65#define PM800_CLASSD_OC_INT_ENA1 (1 << 5)
66
67#define PM800_INT_ENA_2 (0x0A)
68#define PM800_VBAT_INT_ENA2 (1 << 0)
69#define PM800_VSYS_INT_ENA2 (1 << 1)
70#define PM800_VCHG_INT_ENA2 (1 << 2)
71#define PM800_TINT_INT_ENA2 (1 << 3)
72
73#define PM800_INT_ENA_3 (0x0B)
74#define PM800_GPADC0_INT_ENA3 (1 << 0)
75#define PM800_GPADC1_INT_ENA3 (1 << 1)
76#define PM800_GPADC2_INT_ENA3 (1 << 2)
77#define PM800_GPADC3_INT_ENA3 (1 << 3)
78#define PM800_GPADC4_INT_ENA3 (1 << 4)
79
80#define PM800_INT_ENA_4 (0x0C)
81#define PM800_GPIO0_INT_ENA4 (1 << 0)
82#define PM800_GPIO1_INT_ENA4 (1 << 1)
83#define PM800_GPIO2_INT_ENA4 (1 << 2)
84#define PM800_GPIO3_INT_ENA4 (1 << 3)
85#define PM800_GPIO4_INT_ENA4 (1 << 4)
86
87
88#define PM800_INT_REG_NUM (4)
89
90
91enum {
92 PM800_IRQ_ONKEY,
93 PM800_IRQ_EXTON,
94 PM800_IRQ_CHG,
95 PM800_IRQ_BAT,
96 PM800_IRQ_RTC,
97 PM800_IRQ_CLASSD,
98 PM800_IRQ_VBAT,
99 PM800_IRQ_VSYS,
100 PM800_IRQ_VCHG,
101 PM800_IRQ_TINT,
102 PM800_IRQ_GPADC0,
103 PM800_IRQ_GPADC1,
104 PM800_IRQ_GPADC2,
105 PM800_IRQ_GPADC3,
106 PM800_IRQ_GPADC4,
107 PM800_IRQ_GPIO0,
108 PM800_IRQ_GPIO1,
109 PM800_IRQ_GPIO2,
110 PM800_IRQ_GPIO3,
111 PM800_IRQ_GPIO4,
112 PM800_MAX_IRQ,
113};
114
115
116#define PM800_CHIP_GEN_ID_NUM 0x3
117
118static const struct i2c_device_id pm80x_id_table[] = {
119 {"88PM800", 0},
120 {}
121};
122MODULE_DEVICE_TABLE(i2c, pm80x_id_table);
123
124static const struct resource rtc_resources[] = {
125 DEFINE_RES_IRQ_NAMED(PM800_IRQ_RTC, "88pm80x-rtc"),
126};
127
128static struct mfd_cell rtc_devs[] = {
129 {
130 .name = "88pm80x-rtc",
131 .num_resources = ARRAY_SIZE(rtc_resources),
132 .resources = &rtc_resources[0],
133 .id = -1,
134 },
135};
136
137static struct resource onkey_resources[] = {
138 DEFINE_RES_IRQ_NAMED(PM800_IRQ_ONKEY, "88pm80x-onkey"),
139};
140
141static const struct mfd_cell onkey_devs[] = {
142 {
143 .name = "88pm80x-onkey",
144 .num_resources = 1,
145 .resources = &onkey_resources[0],
146 .id = -1,
147 },
148};
149
150static const struct mfd_cell regulator_devs[] = {
151 {
152 .name = "88pm80x-regulator",
153 .id = -1,
154 },
155};
156
157static const struct regmap_irq pm800_irqs[] = {
158
159 [PM800_IRQ_ONKEY] = {
160 .mask = PM800_ONKEY_INT_ENA1,
161 },
162 [PM800_IRQ_EXTON] = {
163 .mask = PM800_EXTON_INT_ENA1,
164 },
165 [PM800_IRQ_CHG] = {
166 .mask = PM800_CHG_INT_ENA1,
167 },
168 [PM800_IRQ_BAT] = {
169 .mask = PM800_BAT_INT_ENA1,
170 },
171 [PM800_IRQ_RTC] = {
172 .mask = PM800_RTC_INT_ENA1,
173 },
174 [PM800_IRQ_CLASSD] = {
175 .mask = PM800_CLASSD_OC_INT_ENA1,
176 },
177
178 [PM800_IRQ_VBAT] = {
179 .reg_offset = 1,
180 .mask = PM800_VBAT_INT_ENA2,
181 },
182 [PM800_IRQ_VSYS] = {
183 .reg_offset = 1,
184 .mask = PM800_VSYS_INT_ENA2,
185 },
186 [PM800_IRQ_VCHG] = {
187 .reg_offset = 1,
188 .mask = PM800_VCHG_INT_ENA2,
189 },
190 [PM800_IRQ_TINT] = {
191 .reg_offset = 1,
192 .mask = PM800_TINT_INT_ENA2,
193 },
194
195 [PM800_IRQ_GPADC0] = {
196 .reg_offset = 2,
197 .mask = PM800_GPADC0_INT_ENA3,
198 },
199 [PM800_IRQ_GPADC1] = {
200 .reg_offset = 2,
201 .mask = PM800_GPADC1_INT_ENA3,
202 },
203 [PM800_IRQ_GPADC2] = {
204 .reg_offset = 2,
205 .mask = PM800_GPADC2_INT_ENA3,
206 },
207 [PM800_IRQ_GPADC3] = {
208 .reg_offset = 2,
209 .mask = PM800_GPADC3_INT_ENA3,
210 },
211 [PM800_IRQ_GPADC4] = {
212 .reg_offset = 2,
213 .mask = PM800_GPADC4_INT_ENA3,
214 },
215
216 [PM800_IRQ_GPIO0] = {
217 .reg_offset = 3,
218 .mask = PM800_GPIO0_INT_ENA4,
219 },
220 [PM800_IRQ_GPIO1] = {
221 .reg_offset = 3,
222 .mask = PM800_GPIO1_INT_ENA4,
223 },
224 [PM800_IRQ_GPIO2] = {
225 .reg_offset = 3,
226 .mask = PM800_GPIO2_INT_ENA4,
227 },
228 [PM800_IRQ_GPIO3] = {
229 .reg_offset = 3,
230 .mask = PM800_GPIO3_INT_ENA4,
231 },
232 [PM800_IRQ_GPIO4] = {
233 .reg_offset = 3,
234 .mask = PM800_GPIO4_INT_ENA4,
235 },
236};
237
238static int device_gpadc_init(struct pm80x_chip *chip,
239 struct pm80x_platform_data *pdata)
240{
241 struct pm80x_subchip *subchip = chip->subchip;
242 struct regmap *map = subchip->regmap_gpadc;
243 int data = 0, mask = 0, ret = 0;
244
245 if (!map) {
246 dev_warn(chip->dev,
247 "Warning: gpadc regmap is not available!\n");
248 return -EINVAL;
249 }
250
251
252
253
254 ret = regmap_update_bits(map,
255 PM800_GPADC_MISC_CONFIG2,
256 PM800_GPADC_MISC_GPFSM_EN,
257 PM800_GPADC_MISC_GPFSM_EN);
258 if (ret < 0)
259 goto out;
260
261
262
263
264
265
266
267 ret = regmap_update_bits(map, PM800_GPADC_MEAS_EN1,
268 PM800_MEAS_EN1_VBAT, PM800_MEAS_EN1_VBAT);
269 if (ret < 0)
270 goto out;
271 ret = regmap_update_bits(map, PM800_GPADC_MEAS_EN2,
272 (PM800_MEAS_EN2_RFTMP | PM800_MEAS_GP0_EN),
273 (PM800_MEAS_EN2_RFTMP | PM800_MEAS_GP0_EN));
274 if (ret < 0)
275 goto out;
276
277
278
279
280
281
282
283 mask = (PM800_GPADC_GP_BIAS_EN0 | PM800_GPADC_GP_BIAS_EN1 |
284 PM800_GPADC_GP_BIAS_EN2 | PM800_GPADC_GP_BIAS_EN3);
285
286 if (pdata && (pdata->batt_det == 0))
287 data = (PM800_GPADC_GP_BIAS_EN0 | PM800_GPADC_GP_BIAS_EN1 |
288 PM800_GPADC_GP_BIAS_EN2 | PM800_GPADC_GP_BIAS_EN3);
289 else
290 data = (PM800_GPADC_GP_BIAS_EN0 | PM800_GPADC_GP_BIAS_EN2 |
291 PM800_GPADC_GP_BIAS_EN3);
292
293 ret = regmap_update_bits(map, PM800_GP_BIAS_ENA1, mask, data);
294 if (ret < 0)
295 goto out;
296
297 dev_info(chip->dev, "pm800 device_gpadc_init: Done\n");
298 return 0;
299
300out:
301 dev_info(chip->dev, "pm800 device_gpadc_init: Failed!\n");
302 return ret;
303}
304
305static int device_onkey_init(struct pm80x_chip *chip,
306 struct pm80x_platform_data *pdata)
307{
308 int ret;
309
310 ret = mfd_add_devices(chip->dev, 0, &onkey_devs[0],
311 ARRAY_SIZE(onkey_devs), &onkey_resources[0], 0,
312 NULL);
313 if (ret) {
314 dev_err(chip->dev, "Failed to add onkey subdev\n");
315 return ret;
316 }
317
318 return 0;
319}
320
321static int device_rtc_init(struct pm80x_chip *chip,
322 struct pm80x_platform_data *pdata)
323{
324 int ret;
325
326 if (pdata) {
327 rtc_devs[0].platform_data = pdata->rtc;
328 rtc_devs[0].pdata_size =
329 pdata->rtc ? sizeof(struct pm80x_rtc_pdata) : 0;
330 }
331 ret = mfd_add_devices(chip->dev, 0, &rtc_devs[0],
332 ARRAY_SIZE(rtc_devs), NULL, 0, NULL);
333 if (ret) {
334 dev_err(chip->dev, "Failed to add rtc subdev\n");
335 return ret;
336 }
337
338 return 0;
339}
340
341static int device_regulator_init(struct pm80x_chip *chip,
342 struct pm80x_platform_data *pdata)
343{
344 int ret;
345
346 ret = mfd_add_devices(chip->dev, 0, ®ulator_devs[0],
347 ARRAY_SIZE(regulator_devs), NULL, 0, NULL);
348 if (ret) {
349 dev_err(chip->dev, "Failed to add regulator subdev\n");
350 return ret;
351 }
352
353 return 0;
354}
355
356static int device_irq_init_800(struct pm80x_chip *chip)
357{
358 struct regmap *map = chip->regmap;
359 unsigned long flags = IRQF_ONESHOT;
360 int data, mask, ret = -EINVAL;
361
362 if (!map || !chip->irq) {
363 dev_err(chip->dev, "incorrect parameters\n");
364 return -EINVAL;
365 }
366
367
368
369
370
371 mask =
372 PM800_WAKEUP2_INV_INT | PM800_WAKEUP2_INT_CLEAR |
373 PM800_WAKEUP2_INT_MASK;
374
375 data = PM800_WAKEUP2_INT_CLEAR;
376 ret = regmap_update_bits(map, PM800_WAKEUP2, mask, data);
377
378 if (ret < 0)
379 goto out;
380
381 ret =
382 regmap_add_irq_chip(chip->regmap, chip->irq, flags, -1,
383 chip->regmap_irq_chip, &chip->irq_data);
384
385out:
386 return ret;
387}
388
389static void device_irq_exit_800(struct pm80x_chip *chip)
390{
391 regmap_del_irq_chip(chip->irq, chip->irq_data);
392}
393
394static struct regmap_irq_chip pm800_irq_chip = {
395 .name = "88pm800",
396 .irqs = pm800_irqs,
397 .num_irqs = ARRAY_SIZE(pm800_irqs),
398
399 .num_regs = 4,
400 .status_base = PM800_INT_STATUS1,
401 .mask_base = PM800_INT_ENA_1,
402 .ack_base = PM800_INT_STATUS1,
403 .mask_invert = 1,
404};
405
406static int pm800_pages_init(struct pm80x_chip *chip)
407{
408 struct pm80x_subchip *subchip;
409 struct i2c_client *client = chip->client;
410
411 int ret = 0;
412
413 subchip = chip->subchip;
414 if (!subchip || !subchip->power_page_addr || !subchip->gpadc_page_addr)
415 return -ENODEV;
416
417
418 subchip->power_page = i2c_new_dummy_device(client->adapter,
419 subchip->power_page_addr);
420 if (IS_ERR(subchip->power_page)) {
421 ret = PTR_ERR(subchip->power_page);
422 goto out;
423 }
424
425 subchip->regmap_power = devm_regmap_init_i2c(subchip->power_page,
426 &pm80x_regmap_config);
427 if (IS_ERR(subchip->regmap_power)) {
428 ret = PTR_ERR(subchip->regmap_power);
429 dev_err(chip->dev,
430 "Failed to allocate regmap_power: %d\n", ret);
431 goto out;
432 }
433
434 i2c_set_clientdata(subchip->power_page, chip);
435
436
437 subchip->gpadc_page = i2c_new_dummy_device(client->adapter,
438 subchip->gpadc_page_addr);
439 if (IS_ERR(subchip->gpadc_page)) {
440 ret = PTR_ERR(subchip->gpadc_page);
441 goto out;
442 }
443
444 subchip->regmap_gpadc = devm_regmap_init_i2c(subchip->gpadc_page,
445 &pm80x_regmap_config);
446 if (IS_ERR(subchip->regmap_gpadc)) {
447 ret = PTR_ERR(subchip->regmap_gpadc);
448 dev_err(chip->dev,
449 "Failed to allocate regmap_gpadc: %d\n", ret);
450 goto out;
451 }
452 i2c_set_clientdata(subchip->gpadc_page, chip);
453
454out:
455 return ret;
456}
457
458static void pm800_pages_exit(struct pm80x_chip *chip)
459{
460 struct pm80x_subchip *subchip;
461
462 subchip = chip->subchip;
463
464 if (subchip && subchip->power_page)
465 i2c_unregister_device(subchip->power_page);
466
467 if (subchip && subchip->gpadc_page)
468 i2c_unregister_device(subchip->gpadc_page);
469}
470
471static int device_800_init(struct pm80x_chip *chip,
472 struct pm80x_platform_data *pdata)
473{
474 int ret;
475 unsigned int val;
476
477
478
479
480
481 ret = regmap_read(chip->regmap, PM800_RTC_CONTROL, &val);
482 if (ret < 0) {
483 dev_err(chip->dev, "Failed to read RTC register: %d\n", ret);
484 goto out;
485 }
486 if (val & PM800_ALARM_WAKEUP) {
487 if (pdata && pdata->rtc)
488 pdata->rtc->rtc_wakeup = 1;
489 }
490
491 ret = device_gpadc_init(chip, pdata);
492 if (ret < 0) {
493 dev_err(chip->dev, "[%s]Failed to init gpadc\n", __func__);
494 goto out;
495 }
496
497 chip->regmap_irq_chip = &pm800_irq_chip;
498
499 ret = device_irq_init_800(chip);
500 if (ret < 0) {
501 dev_err(chip->dev, "[%s]Failed to init pm800 irq\n", __func__);
502 goto out;
503 }
504
505 ret = device_onkey_init(chip, pdata);
506 if (ret) {
507 dev_err(chip->dev, "Failed to add onkey subdev\n");
508 goto out_dev;
509 }
510
511 ret = device_rtc_init(chip, pdata);
512 if (ret) {
513 dev_err(chip->dev, "Failed to add rtc subdev\n");
514 goto out;
515 }
516
517 ret = device_regulator_init(chip, pdata);
518 if (ret) {
519 dev_err(chip->dev, "Failed to add regulators subdev\n");
520 goto out;
521 }
522
523 return 0;
524out_dev:
525 mfd_remove_devices(chip->dev);
526 device_irq_exit_800(chip);
527out:
528 return ret;
529}
530
531static int pm800_probe(struct i2c_client *client,
532 const struct i2c_device_id *id)
533{
534 int ret = 0;
535 struct pm80x_chip *chip;
536 struct pm80x_platform_data *pdata = dev_get_platdata(&client->dev);
537 struct pm80x_subchip *subchip;
538
539 ret = pm80x_init(client);
540 if (ret) {
541 dev_err(&client->dev, "pm800_init fail\n");
542 goto out_init;
543 }
544
545 chip = i2c_get_clientdata(client);
546
547
548 subchip =
549 devm_kzalloc(&client->dev, sizeof(struct pm80x_subchip),
550 GFP_KERNEL);
551 if (!subchip) {
552 ret = -ENOMEM;
553 goto err_subchip_alloc;
554 }
555
556
557 subchip->power_page_addr = client->addr + 1;
558 subchip->gpadc_page_addr = client->addr + 2;
559 chip->subchip = subchip;
560
561 ret = pm800_pages_init(chip);
562 if (ret) {
563 dev_err(&client->dev, "pm800_pages_init failed!\n");
564 goto err_device_init;
565 }
566
567 ret = device_800_init(chip, pdata);
568 if (ret) {
569 dev_err(chip->dev, "Failed to initialize 88pm800 devices\n");
570 goto err_device_init;
571 }
572
573 if (pdata && pdata->plat_config)
574 pdata->plat_config(chip, pdata);
575
576 return 0;
577
578err_device_init:
579 pm800_pages_exit(chip);
580err_subchip_alloc:
581 pm80x_deinit();
582out_init:
583 return ret;
584}
585
586static int pm800_remove(struct i2c_client *client)
587{
588 struct pm80x_chip *chip = i2c_get_clientdata(client);
589
590 mfd_remove_devices(chip->dev);
591 device_irq_exit_800(chip);
592
593 pm800_pages_exit(chip);
594 pm80x_deinit();
595
596 return 0;
597}
598
599static struct i2c_driver pm800_driver = {
600 .driver = {
601 .name = "88PM800",
602 .pm = &pm80x_pm_ops,
603 },
604 .probe = pm800_probe,
605 .remove = pm800_remove,
606 .id_table = pm80x_id_table,
607};
608
609static int __init pm800_i2c_init(void)
610{
611 return i2c_add_driver(&pm800_driver);
612}
613subsys_initcall(pm800_i2c_init);
614
615static void __exit pm800_i2c_exit(void)
616{
617 i2c_del_driver(&pm800_driver);
618}
619module_exit(pm800_i2c_exit);
620
621MODULE_DESCRIPTION("PMIC Driver for Marvell 88PM800");
622MODULE_AUTHOR("Qiao Zhou <zhouqiao@marvell.com>");
623MODULE_LICENSE("GPL");
624