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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright 2009-2010 Pengutronix
4 * Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>
5 *
6 * loosely based on an earlier driver that has
7 * Copyright 2009 Pengutronix, Sascha Hauer <s.hauer@pengutronix.de>
8 */
9
10#include <linux/module.h>
11#include <linux/of.h>
12#include <linux/of_device.h>
13#include <linux/platform_device.h>
14#include <linux/mfd/core.h>
15
16#include "mc13xxx.h"
17
18#define MC13XXX_IRQSTAT0 0
19#define MC13XXX_IRQMASK0 1
20#define MC13XXX_IRQSTAT1 3
21#define MC13XXX_IRQMASK1 4
22
23#define MC13XXX_REVISION 7
24#define MC13XXX_REVISION_REVMETAL (0x07 << 0)
25#define MC13XXX_REVISION_REVFULL (0x03 << 3)
26#define MC13XXX_REVISION_ICID (0x07 << 6)
27#define MC13XXX_REVISION_FIN (0x03 << 9)
28#define MC13XXX_REVISION_FAB (0x03 << 11)
29#define MC13XXX_REVISION_ICIDCODE (0x3f << 13)
30
31#define MC34708_REVISION_REVMETAL (0x07 << 0)
32#define MC34708_REVISION_REVFULL (0x07 << 3)
33#define MC34708_REVISION_FIN (0x07 << 6)
34#define MC34708_REVISION_FAB (0x07 << 9)
35
36#define MC13XXX_PWRCTRL 15
37#define MC13XXX_PWRCTRL_WDIRESET (1 << 12)
38
39#define MC13XXX_ADC1 44
40#define MC13XXX_ADC1_ADEN (1 << 0)
41#define MC13XXX_ADC1_RAND (1 << 1)
42#define MC13XXX_ADC1_ADSEL (1 << 3)
43#define MC13XXX_ADC1_ASC (1 << 20)
44#define MC13XXX_ADC1_ADTRIGIGN (1 << 21)
45
46#define MC13XXX_ADC2 45
47
48void mc13xxx_lock(struct mc13xxx *mc13xxx)
49{
50 if (!mutex_trylock(&mc13xxx->lock)) {
51 dev_dbg(mc13xxx->dev, "wait for %s from %ps\n",
52 __func__, __builtin_return_address(0));
53
54 mutex_lock(&mc13xxx->lock);
55 }
56 dev_dbg(mc13xxx->dev, "%s from %ps\n",
57 __func__, __builtin_return_address(0));
58}
59EXPORT_SYMBOL(mc13xxx_lock);
60
61void mc13xxx_unlock(struct mc13xxx *mc13xxx)
62{
63 dev_dbg(mc13xxx->dev, "%s from %ps\n",
64 __func__, __builtin_return_address(0));
65 mutex_unlock(&mc13xxx->lock);
66}
67EXPORT_SYMBOL(mc13xxx_unlock);
68
69int mc13xxx_reg_read(struct mc13xxx *mc13xxx, unsigned int offset, u32 *val)
70{
71 int ret;
72
73 ret = regmap_read(mc13xxx->regmap, offset, val);
74 dev_vdbg(mc13xxx->dev, "[0x%02x] -> 0x%06x\n", offset, *val);
75
76 return ret;
77}
78EXPORT_SYMBOL(mc13xxx_reg_read);
79
80int mc13xxx_reg_write(struct mc13xxx *mc13xxx, unsigned int offset, u32 val)
81{
82 dev_vdbg(mc13xxx->dev, "[0x%02x] <- 0x%06x\n", offset, val);
83
84 if (val >= BIT(24))
85 return -EINVAL;
86
87 return regmap_write(mc13xxx->regmap, offset, val);
88}
89EXPORT_SYMBOL(mc13xxx_reg_write);
90
91int mc13xxx_reg_rmw(struct mc13xxx *mc13xxx, unsigned int offset,
92 u32 mask, u32 val)
93{
94 BUG_ON(val & ~mask);
95 dev_vdbg(mc13xxx->dev, "[0x%02x] <- 0x%06x (mask: 0x%06x)\n",
96 offset, val, mask);
97
98 return regmap_update_bits(mc13xxx->regmap, offset, mask, val);
99}
100EXPORT_SYMBOL(mc13xxx_reg_rmw);
101
102int mc13xxx_irq_mask(struct mc13xxx *mc13xxx, int irq)
103{
104 int virq = regmap_irq_get_virq(mc13xxx->irq_data, irq);
105
106 disable_irq_nosync(virq);
107
108 return 0;
109}
110EXPORT_SYMBOL(mc13xxx_irq_mask);
111
112int mc13xxx_irq_unmask(struct mc13xxx *mc13xxx, int irq)
113{
114 int virq = regmap_irq_get_virq(mc13xxx->irq_data, irq);
115
116 enable_irq(virq);
117
118 return 0;
119}
120EXPORT_SYMBOL(mc13xxx_irq_unmask);
121
122int mc13xxx_irq_status(struct mc13xxx *mc13xxx, int irq,
123 int *enabled, int *pending)
124{
125 int ret;
126 unsigned int offmask = irq < 24 ? MC13XXX_IRQMASK0 : MC13XXX_IRQMASK1;
127 unsigned int offstat = irq < 24 ? MC13XXX_IRQSTAT0 : MC13XXX_IRQSTAT1;
128 u32 irqbit = 1 << (irq < 24 ? irq : irq - 24);
129
130 if (irq < 0 || irq >= ARRAY_SIZE(mc13xxx->irqs))
131 return -EINVAL;
132
133 if (enabled) {
134 u32 mask;
135
136 ret = mc13xxx_reg_read(mc13xxx, offmask, &mask);
137 if (ret)
138 return ret;
139
140 *enabled = mask & irqbit;
141 }
142
143 if (pending) {
144 u32 stat;
145
146 ret = mc13xxx_reg_read(mc13xxx, offstat, &stat);
147 if (ret)
148 return ret;
149
150 *pending = stat & irqbit;
151 }
152
153 return 0;
154}
155EXPORT_SYMBOL(mc13xxx_irq_status);
156
157int mc13xxx_irq_request(struct mc13xxx *mc13xxx, int irq,
158 irq_handler_t handler, const char *name, void *dev)
159{
160 int virq = regmap_irq_get_virq(mc13xxx->irq_data, irq);
161
162 return devm_request_threaded_irq(mc13xxx->dev, virq, NULL, handler,
163 IRQF_ONESHOT, name, dev);
164}
165EXPORT_SYMBOL(mc13xxx_irq_request);
166
167int mc13xxx_irq_free(struct mc13xxx *mc13xxx, int irq, void *dev)
168{
169 int virq = regmap_irq_get_virq(mc13xxx->irq_data, irq);
170
171 devm_free_irq(mc13xxx->dev, virq, dev);
172
173 return 0;
174}
175EXPORT_SYMBOL(mc13xxx_irq_free);
176
177#define maskval(reg, mask) (((reg) & (mask)) >> __ffs(mask))
178static void mc13xxx_print_revision(struct mc13xxx *mc13xxx, u32 revision)
179{
180 dev_info(mc13xxx->dev, "%s: rev: %d.%d, "
181 "fin: %d, fab: %d, icid: %d/%d\n",
182 mc13xxx->variant->name,
183 maskval(revision, MC13XXX_REVISION_REVFULL),
184 maskval(revision, MC13XXX_REVISION_REVMETAL),
185 maskval(revision, MC13XXX_REVISION_FIN),
186 maskval(revision, MC13XXX_REVISION_FAB),
187 maskval(revision, MC13XXX_REVISION_ICID),
188 maskval(revision, MC13XXX_REVISION_ICIDCODE));
189}
190
191static void mc34708_print_revision(struct mc13xxx *mc13xxx, u32 revision)
192{
193 dev_info(mc13xxx->dev, "%s: rev %d.%d, fin: %d, fab: %d\n",
194 mc13xxx->variant->name,
195 maskval(revision, MC34708_REVISION_REVFULL),
196 maskval(revision, MC34708_REVISION_REVMETAL),
197 maskval(revision, MC34708_REVISION_FIN),
198 maskval(revision, MC34708_REVISION_FAB));
199}
200
201/* These are only exported for mc13xxx-i2c and mc13xxx-spi */
202struct mc13xxx_variant mc13xxx_variant_mc13783 = {
203 .name = "mc13783",
204 .print_revision = mc13xxx_print_revision,
205};
206EXPORT_SYMBOL_GPL(mc13xxx_variant_mc13783);
207
208struct mc13xxx_variant mc13xxx_variant_mc13892 = {
209 .name = "mc13892",
210 .print_revision = mc13xxx_print_revision,
211};
212EXPORT_SYMBOL_GPL(mc13xxx_variant_mc13892);
213
214struct mc13xxx_variant mc13xxx_variant_mc34708 = {
215 .name = "mc34708",
216 .print_revision = mc34708_print_revision,
217};
218EXPORT_SYMBOL_GPL(mc13xxx_variant_mc34708);
219
220static const char *mc13xxx_get_chipname(struct mc13xxx *mc13xxx)
221{
222 return mc13xxx->variant->name;
223}
224
225int mc13xxx_get_flags(struct mc13xxx *mc13xxx)
226{
227 return mc13xxx->flags;
228}
229EXPORT_SYMBOL(mc13xxx_get_flags);
230
231#define MC13XXX_ADC1_CHAN0_SHIFT 5
232#define MC13XXX_ADC1_CHAN1_SHIFT 8
233#define MC13783_ADC1_ATO_SHIFT 11
234#define MC13783_ADC1_ATOX (1 << 19)
235
236struct mc13xxx_adcdone_data {
237 struct mc13xxx *mc13xxx;
238 struct completion done;
239};
240
241static irqreturn_t mc13xxx_handler_adcdone(int irq, void *data)
242{
243 struct mc13xxx_adcdone_data *adcdone_data = data;
244
245 complete_all(&adcdone_data->done);
246
247 return IRQ_HANDLED;
248}
249
250#define MC13XXX_ADC_WORKING (1 << 0)
251
252int mc13xxx_adc_do_conversion(struct mc13xxx *mc13xxx, unsigned int mode,
253 unsigned int channel, u8 ato, bool atox,
254 unsigned int *sample)
255{
256 u32 adc0, adc1, old_adc0;
257 int i, ret;
258 struct mc13xxx_adcdone_data adcdone_data = {
259 .mc13xxx = mc13xxx,
260 };
261 init_completion(&adcdone_data.done);
262
263 dev_dbg(mc13xxx->dev, "%s\n", __func__);
264
265 mc13xxx_lock(mc13xxx);
266
267 if (mc13xxx->adcflags & MC13XXX_ADC_WORKING) {
268 ret = -EBUSY;
269 goto out;
270 }
271
272 mc13xxx->adcflags |= MC13XXX_ADC_WORKING;
273
274 ret = mc13xxx_reg_read(mc13xxx, MC13XXX_ADC0, &old_adc0);
275 if (ret)
276 goto out;
277
278 adc0 = MC13XXX_ADC0_ADINC1 | MC13XXX_ADC0_ADINC2 |
279 MC13XXX_ADC0_CHRGRAWDIV;
280 adc1 = MC13XXX_ADC1_ADEN | MC13XXX_ADC1_ADTRIGIGN | MC13XXX_ADC1_ASC;
281
282 /*
283 * Channels mapped through ADIN7:
284 * 7 - General purpose ADIN7
285 * 16 - UID
286 * 17 - Die temperature
287 */
288 if (channel > 7 && channel < 16) {
289 adc1 |= MC13XXX_ADC1_ADSEL;
290 } else if (channel == 16) {
291 adc0 |= MC13XXX_ADC0_ADIN7SEL_UID;
292 channel = 7;
293 } else if (channel == 17) {
294 adc0 |= MC13XXX_ADC0_ADIN7SEL_DIE;
295 channel = 7;
296 }
297
298 switch (mode) {
299 case MC13XXX_ADC_MODE_TS:
300 adc0 |= MC13XXX_ADC0_ADREFEN | MC13XXX_ADC0_TSMOD0 |
301 MC13XXX_ADC0_TSMOD1;
302 adc1 |= 4 << MC13XXX_ADC1_CHAN1_SHIFT;
303 break;
304
305 case MC13XXX_ADC_MODE_SINGLE_CHAN:
306 adc0 |= old_adc0 & MC13XXX_ADC0_CONFIG_MASK;
307 adc1 |= (channel & 0x7) << MC13XXX_ADC1_CHAN0_SHIFT;
308 adc1 |= MC13XXX_ADC1_RAND;
309 break;
310
311 case MC13XXX_ADC_MODE_MULT_CHAN:
312 adc0 |= old_adc0 & MC13XXX_ADC0_CONFIG_MASK;
313 adc1 |= 4 << MC13XXX_ADC1_CHAN1_SHIFT;
314 break;
315
316 default:
317 mc13xxx_unlock(mc13xxx);
318 return -EINVAL;
319 }
320
321 adc1 |= ato << MC13783_ADC1_ATO_SHIFT;
322 if (atox)
323 adc1 |= MC13783_ADC1_ATOX;
324
325 dev_dbg(mc13xxx->dev, "%s: request irq\n", __func__);
326 ret = mc13xxx_irq_request(mc13xxx, MC13XXX_IRQ_ADCDONE,
327 mc13xxx_handler_adcdone, __func__, &adcdone_data);
328 if (ret)
329 goto out;
330
331 mc13xxx_reg_write(mc13xxx, MC13XXX_ADC0, adc0);
332 mc13xxx_reg_write(mc13xxx, MC13XXX_ADC1, adc1);
333
334 mc13xxx_unlock(mc13xxx);
335
336 ret = wait_for_completion_interruptible_timeout(&adcdone_data.done, HZ);
337
338 if (!ret)
339 ret = -ETIMEDOUT;
340
341 mc13xxx_lock(mc13xxx);
342
343 mc13xxx_irq_free(mc13xxx, MC13XXX_IRQ_ADCDONE, &adcdone_data);
344
345 if (ret > 0)
346 for (i = 0; i < 4; ++i) {
347 ret = mc13xxx_reg_read(mc13xxx,
348 MC13XXX_ADC2, &sample[i]);
349 if (ret)
350 break;
351 }
352
353 if (mode == MC13XXX_ADC_MODE_TS)
354 /* restore TSMOD */
355 mc13xxx_reg_write(mc13xxx, MC13XXX_ADC0, old_adc0);
356
357 mc13xxx->adcflags &= ~MC13XXX_ADC_WORKING;
358out:
359 mc13xxx_unlock(mc13xxx);
360
361 return ret;
362}
363EXPORT_SYMBOL_GPL(mc13xxx_adc_do_conversion);
364
365static int mc13xxx_add_subdevice_pdata(struct mc13xxx *mc13xxx,
366 const char *format, void *pdata, size_t pdata_size)
367{
368 char buf[30];
369 const char *name = mc13xxx_get_chipname(mc13xxx);
370
371 struct mfd_cell cell = {
372 .platform_data = pdata,
373 .pdata_size = pdata_size,
374 };
375
376 /* there is no asnprintf in the kernel :-( */
377 if (snprintf(buf, sizeof(buf), format, name) > sizeof(buf))
378 return -E2BIG;
379
380 cell.name = kmemdup(buf, strlen(buf) + 1, GFP_KERNEL);
381 if (!cell.name)
382 return -ENOMEM;
383
384 return mfd_add_devices(mc13xxx->dev, -1, &cell, 1, NULL, 0,
385 regmap_irq_get_domain(mc13xxx->irq_data));
386}
387
388static int mc13xxx_add_subdevice(struct mc13xxx *mc13xxx, const char *format)
389{
390 return mc13xxx_add_subdevice_pdata(mc13xxx, format, NULL, 0);
391}
392
393#ifdef CONFIG_OF
394static int mc13xxx_probe_flags_dt(struct mc13xxx *mc13xxx)
395{
396 struct device_node *np = mc13xxx->dev->of_node;
397
398 if (!np)
399 return -ENODEV;
400
401 if (of_property_read_bool(np, "fsl,mc13xxx-uses-adc"))
402 mc13xxx->flags |= MC13XXX_USE_ADC;
403
404 if (of_property_read_bool(np, "fsl,mc13xxx-uses-codec"))
405 mc13xxx->flags |= MC13XXX_USE_CODEC;
406
407 if (of_property_read_bool(np, "fsl,mc13xxx-uses-rtc"))
408 mc13xxx->flags |= MC13XXX_USE_RTC;
409
410 if (of_property_read_bool(np, "fsl,mc13xxx-uses-touch"))
411 mc13xxx->flags |= MC13XXX_USE_TOUCHSCREEN;
412
413 return 0;
414}
415#else
416static inline int mc13xxx_probe_flags_dt(struct mc13xxx *mc13xxx)
417{
418 return -ENODEV;
419}
420#endif
421
422int mc13xxx_common_init(struct device *dev)
423{
424 struct mc13xxx_platform_data *pdata = dev_get_platdata(dev);
425 struct mc13xxx *mc13xxx = dev_get_drvdata(dev);
426 u32 revision;
427 int i, ret;
428
429 mc13xxx->dev = dev;
430
431 ret = mc13xxx_reg_read(mc13xxx, MC13XXX_REVISION, &revision);
432 if (ret)
433 return ret;
434
435 mc13xxx->variant->print_revision(mc13xxx, revision);
436
437 ret = mc13xxx_reg_rmw(mc13xxx, MC13XXX_PWRCTRL,
438 MC13XXX_PWRCTRL_WDIRESET, MC13XXX_PWRCTRL_WDIRESET);
439 if (ret)
440 return ret;
441
442 for (i = 0; i < ARRAY_SIZE(mc13xxx->irqs); i++) {
443 mc13xxx->irqs[i].reg_offset = i / MC13XXX_IRQ_PER_REG;
444 mc13xxx->irqs[i].mask = BIT(i % MC13XXX_IRQ_PER_REG);
445 }
446
447 mc13xxx->irq_chip.name = dev_name(dev);
448 mc13xxx->irq_chip.status_base = MC13XXX_IRQSTAT0;
449 mc13xxx->irq_chip.mask_base = MC13XXX_IRQMASK0;
450 mc13xxx->irq_chip.ack_base = MC13XXX_IRQSTAT0;
451 mc13xxx->irq_chip.irq_reg_stride = MC13XXX_IRQSTAT1 - MC13XXX_IRQSTAT0;
452 mc13xxx->irq_chip.init_ack_masked = true;
453 mc13xxx->irq_chip.use_ack = true;
454 mc13xxx->irq_chip.num_regs = MC13XXX_IRQ_REG_CNT;
455 mc13xxx->irq_chip.irqs = mc13xxx->irqs;
456 mc13xxx->irq_chip.num_irqs = ARRAY_SIZE(mc13xxx->irqs);
457
458 ret = regmap_add_irq_chip(mc13xxx->regmap, mc13xxx->irq, IRQF_ONESHOT,
459 0, &mc13xxx->irq_chip, &mc13xxx->irq_data);
460 if (ret)
461 return ret;
462
463 mutex_init(&mc13xxx->lock);
464
465 if (mc13xxx_probe_flags_dt(mc13xxx) < 0 && pdata)
466 mc13xxx->flags = pdata->flags;
467
468 if (pdata) {
469 mc13xxx_add_subdevice_pdata(mc13xxx, "%s-regulator",
470 &pdata->regulators, sizeof(pdata->regulators));
471 mc13xxx_add_subdevice_pdata(mc13xxx, "%s-led",
472 pdata->leds, sizeof(*pdata->leds));
473 mc13xxx_add_subdevice_pdata(mc13xxx, "%s-pwrbutton",
474 pdata->buttons, sizeof(*pdata->buttons));
475 if (mc13xxx->flags & MC13XXX_USE_CODEC)
476 mc13xxx_add_subdevice_pdata(mc13xxx, "%s-codec",
477 pdata->codec, sizeof(*pdata->codec));
478 if (mc13xxx->flags & MC13XXX_USE_TOUCHSCREEN)
479 mc13xxx_add_subdevice_pdata(mc13xxx, "%s-ts",
480 &pdata->touch, sizeof(pdata->touch));
481 } else {
482 mc13xxx_add_subdevice(mc13xxx, "%s-regulator");
483 mc13xxx_add_subdevice(mc13xxx, "%s-led");
484 mc13xxx_add_subdevice(mc13xxx, "%s-pwrbutton");
485 if (mc13xxx->flags & MC13XXX_USE_CODEC)
486 mc13xxx_add_subdevice(mc13xxx, "%s-codec");
487 if (mc13xxx->flags & MC13XXX_USE_TOUCHSCREEN)
488 mc13xxx_add_subdevice(mc13xxx, "%s-ts");
489 }
490
491 if (mc13xxx->flags & MC13XXX_USE_ADC)
492 mc13xxx_add_subdevice(mc13xxx, "%s-adc");
493
494 if (mc13xxx->flags & MC13XXX_USE_RTC)
495 mc13xxx_add_subdevice(mc13xxx, "%s-rtc");
496
497 return 0;
498}
499EXPORT_SYMBOL_GPL(mc13xxx_common_init);
500
501void mc13xxx_common_exit(struct device *dev)
502{
503 struct mc13xxx *mc13xxx = dev_get_drvdata(dev);
504
505 mfd_remove_devices(dev);
506 regmap_del_irq_chip(mc13xxx->irq, mc13xxx->irq_data);
507 mutex_destroy(&mc13xxx->lock);
508}
509EXPORT_SYMBOL_GPL(mc13xxx_common_exit);
510
511MODULE_DESCRIPTION("Core driver for Freescale MC13XXX PMIC");
512MODULE_AUTHOR("Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>");
513MODULE_LICENSE("GPL v2");
1/*
2 * Copyright 2009-2010 Pengutronix
3 * Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>
4 *
5 * loosely based on an earlier driver that has
6 * Copyright 2009 Pengutronix, Sascha Hauer <s.hauer@pengutronix.de>
7 *
8 * This program is free software; you can redistribute it and/or modify it under
9 * the terms of the GNU General Public License version 2 as published by the
10 * Free Software Foundation.
11 */
12
13#include <linux/slab.h>
14#include <linux/module.h>
15#include <linux/platform_device.h>
16#include <linux/mutex.h>
17#include <linux/interrupt.h>
18#include <linux/mfd/core.h>
19#include <linux/mfd/mc13xxx.h>
20#include <linux/of.h>
21#include <linux/of_device.h>
22#include <linux/of_gpio.h>
23
24#include "mc13xxx.h"
25
26#define MC13XXX_IRQSTAT0 0
27#define MC13XXX_IRQSTAT0_ADCDONEI (1 << 0)
28#define MC13XXX_IRQSTAT0_ADCBISDONEI (1 << 1)
29#define MC13XXX_IRQSTAT0_TSI (1 << 2)
30#define MC13783_IRQSTAT0_WHIGHI (1 << 3)
31#define MC13783_IRQSTAT0_WLOWI (1 << 4)
32#define MC13XXX_IRQSTAT0_CHGDETI (1 << 6)
33#define MC13783_IRQSTAT0_CHGOVI (1 << 7)
34#define MC13XXX_IRQSTAT0_CHGREVI (1 << 8)
35#define MC13XXX_IRQSTAT0_CHGSHORTI (1 << 9)
36#define MC13XXX_IRQSTAT0_CCCVI (1 << 10)
37#define MC13XXX_IRQSTAT0_CHGCURRI (1 << 11)
38#define MC13XXX_IRQSTAT0_BPONI (1 << 12)
39#define MC13XXX_IRQSTAT0_LOBATLI (1 << 13)
40#define MC13XXX_IRQSTAT0_LOBATHI (1 << 14)
41#define MC13783_IRQSTAT0_UDPI (1 << 15)
42#define MC13783_IRQSTAT0_USBI (1 << 16)
43#define MC13783_IRQSTAT0_IDI (1 << 19)
44#define MC13783_IRQSTAT0_SE1I (1 << 21)
45#define MC13783_IRQSTAT0_CKDETI (1 << 22)
46#define MC13783_IRQSTAT0_UDMI (1 << 23)
47
48#define MC13XXX_IRQMASK0 1
49#define MC13XXX_IRQMASK0_ADCDONEM MC13XXX_IRQSTAT0_ADCDONEI
50#define MC13XXX_IRQMASK0_ADCBISDONEM MC13XXX_IRQSTAT0_ADCBISDONEI
51#define MC13XXX_IRQMASK0_TSM MC13XXX_IRQSTAT0_TSI
52#define MC13783_IRQMASK0_WHIGHM MC13783_IRQSTAT0_WHIGHI
53#define MC13783_IRQMASK0_WLOWM MC13783_IRQSTAT0_WLOWI
54#define MC13XXX_IRQMASK0_CHGDETM MC13XXX_IRQSTAT0_CHGDETI
55#define MC13783_IRQMASK0_CHGOVM MC13783_IRQSTAT0_CHGOVI
56#define MC13XXX_IRQMASK0_CHGREVM MC13XXX_IRQSTAT0_CHGREVI
57#define MC13XXX_IRQMASK0_CHGSHORTM MC13XXX_IRQSTAT0_CHGSHORTI
58#define MC13XXX_IRQMASK0_CCCVM MC13XXX_IRQSTAT0_CCCVI
59#define MC13XXX_IRQMASK0_CHGCURRM MC13XXX_IRQSTAT0_CHGCURRI
60#define MC13XXX_IRQMASK0_BPONM MC13XXX_IRQSTAT0_BPONI
61#define MC13XXX_IRQMASK0_LOBATLM MC13XXX_IRQSTAT0_LOBATLI
62#define MC13XXX_IRQMASK0_LOBATHM MC13XXX_IRQSTAT0_LOBATHI
63#define MC13783_IRQMASK0_UDPM MC13783_IRQSTAT0_UDPI
64#define MC13783_IRQMASK0_USBM MC13783_IRQSTAT0_USBI
65#define MC13783_IRQMASK0_IDM MC13783_IRQSTAT0_IDI
66#define MC13783_IRQMASK0_SE1M MC13783_IRQSTAT0_SE1I
67#define MC13783_IRQMASK0_CKDETM MC13783_IRQSTAT0_CKDETI
68#define MC13783_IRQMASK0_UDMM MC13783_IRQSTAT0_UDMI
69
70#define MC13XXX_IRQSTAT1 3
71#define MC13XXX_IRQSTAT1_1HZI (1 << 0)
72#define MC13XXX_IRQSTAT1_TODAI (1 << 1)
73#define MC13783_IRQSTAT1_ONOFD1I (1 << 3)
74#define MC13783_IRQSTAT1_ONOFD2I (1 << 4)
75#define MC13783_IRQSTAT1_ONOFD3I (1 << 5)
76#define MC13XXX_IRQSTAT1_SYSRSTI (1 << 6)
77#define MC13XXX_IRQSTAT1_RTCRSTI (1 << 7)
78#define MC13XXX_IRQSTAT1_PCI (1 << 8)
79#define MC13XXX_IRQSTAT1_WARMI (1 << 9)
80#define MC13XXX_IRQSTAT1_MEMHLDI (1 << 10)
81#define MC13783_IRQSTAT1_PWRRDYI (1 << 11)
82#define MC13XXX_IRQSTAT1_THWARNLI (1 << 12)
83#define MC13XXX_IRQSTAT1_THWARNHI (1 << 13)
84#define MC13XXX_IRQSTAT1_CLKI (1 << 14)
85#define MC13783_IRQSTAT1_SEMAFI (1 << 15)
86#define MC13783_IRQSTAT1_MC2BI (1 << 17)
87#define MC13783_IRQSTAT1_HSDETI (1 << 18)
88#define MC13783_IRQSTAT1_HSLI (1 << 19)
89#define MC13783_IRQSTAT1_ALSPTHI (1 << 20)
90#define MC13783_IRQSTAT1_AHSSHORTI (1 << 21)
91
92#define MC13XXX_IRQMASK1 4
93#define MC13XXX_IRQMASK1_1HZM MC13XXX_IRQSTAT1_1HZI
94#define MC13XXX_IRQMASK1_TODAM MC13XXX_IRQSTAT1_TODAI
95#define MC13783_IRQMASK1_ONOFD1M MC13783_IRQSTAT1_ONOFD1I
96#define MC13783_IRQMASK1_ONOFD2M MC13783_IRQSTAT1_ONOFD2I
97#define MC13783_IRQMASK1_ONOFD3M MC13783_IRQSTAT1_ONOFD3I
98#define MC13XXX_IRQMASK1_SYSRSTM MC13XXX_IRQSTAT1_SYSRSTI
99#define MC13XXX_IRQMASK1_RTCRSTM MC13XXX_IRQSTAT1_RTCRSTI
100#define MC13XXX_IRQMASK1_PCM MC13XXX_IRQSTAT1_PCI
101#define MC13XXX_IRQMASK1_WARMM MC13XXX_IRQSTAT1_WARMI
102#define MC13XXX_IRQMASK1_MEMHLDM MC13XXX_IRQSTAT1_MEMHLDI
103#define MC13783_IRQMASK1_PWRRDYM MC13783_IRQSTAT1_PWRRDYI
104#define MC13XXX_IRQMASK1_THWARNLM MC13XXX_IRQSTAT1_THWARNLI
105#define MC13XXX_IRQMASK1_THWARNHM MC13XXX_IRQSTAT1_THWARNHI
106#define MC13XXX_IRQMASK1_CLKM MC13XXX_IRQSTAT1_CLKI
107#define MC13783_IRQMASK1_SEMAFM MC13783_IRQSTAT1_SEMAFI
108#define MC13783_IRQMASK1_MC2BM MC13783_IRQSTAT1_MC2BI
109#define MC13783_IRQMASK1_HSDETM MC13783_IRQSTAT1_HSDETI
110#define MC13783_IRQMASK1_HSLM MC13783_IRQSTAT1_HSLI
111#define MC13783_IRQMASK1_ALSPTHM MC13783_IRQSTAT1_ALSPTHI
112#define MC13783_IRQMASK1_AHSSHORTM MC13783_IRQSTAT1_AHSSHORTI
113
114#define MC13XXX_REVISION 7
115#define MC13XXX_REVISION_REVMETAL (0x07 << 0)
116#define MC13XXX_REVISION_REVFULL (0x03 << 3)
117#define MC13XXX_REVISION_ICID (0x07 << 6)
118#define MC13XXX_REVISION_FIN (0x03 << 9)
119#define MC13XXX_REVISION_FAB (0x03 << 11)
120#define MC13XXX_REVISION_ICIDCODE (0x3f << 13)
121
122#define MC34708_REVISION_REVMETAL (0x07 << 0)
123#define MC34708_REVISION_REVFULL (0x07 << 3)
124#define MC34708_REVISION_FIN (0x07 << 6)
125#define MC34708_REVISION_FAB (0x07 << 9)
126
127#define MC13XXX_ADC1 44
128#define MC13XXX_ADC1_ADEN (1 << 0)
129#define MC13XXX_ADC1_RAND (1 << 1)
130#define MC13XXX_ADC1_ADSEL (1 << 3)
131#define MC13XXX_ADC1_ASC (1 << 20)
132#define MC13XXX_ADC1_ADTRIGIGN (1 << 21)
133
134#define MC13XXX_ADC2 45
135
136void mc13xxx_lock(struct mc13xxx *mc13xxx)
137{
138 if (!mutex_trylock(&mc13xxx->lock)) {
139 dev_dbg(mc13xxx->dev, "wait for %s from %pf\n",
140 __func__, __builtin_return_address(0));
141
142 mutex_lock(&mc13xxx->lock);
143 }
144 dev_dbg(mc13xxx->dev, "%s from %pf\n",
145 __func__, __builtin_return_address(0));
146}
147EXPORT_SYMBOL(mc13xxx_lock);
148
149void mc13xxx_unlock(struct mc13xxx *mc13xxx)
150{
151 dev_dbg(mc13xxx->dev, "%s from %pf\n",
152 __func__, __builtin_return_address(0));
153 mutex_unlock(&mc13xxx->lock);
154}
155EXPORT_SYMBOL(mc13xxx_unlock);
156
157int mc13xxx_reg_read(struct mc13xxx *mc13xxx, unsigned int offset, u32 *val)
158{
159 int ret;
160
161 ret = regmap_read(mc13xxx->regmap, offset, val);
162 dev_vdbg(mc13xxx->dev, "[0x%02x] -> 0x%06x\n", offset, *val);
163
164 return ret;
165}
166EXPORT_SYMBOL(mc13xxx_reg_read);
167
168int mc13xxx_reg_write(struct mc13xxx *mc13xxx, unsigned int offset, u32 val)
169{
170 dev_vdbg(mc13xxx->dev, "[0x%02x] <- 0x%06x\n", offset, val);
171
172 if (val >= BIT(24))
173 return -EINVAL;
174
175 return regmap_write(mc13xxx->regmap, offset, val);
176}
177EXPORT_SYMBOL(mc13xxx_reg_write);
178
179int mc13xxx_reg_rmw(struct mc13xxx *mc13xxx, unsigned int offset,
180 u32 mask, u32 val)
181{
182 BUG_ON(val & ~mask);
183 dev_vdbg(mc13xxx->dev, "[0x%02x] <- 0x%06x (mask: 0x%06x)\n",
184 offset, val, mask);
185
186 return regmap_update_bits(mc13xxx->regmap, offset, mask, val);
187}
188EXPORT_SYMBOL(mc13xxx_reg_rmw);
189
190int mc13xxx_irq_mask(struct mc13xxx *mc13xxx, int irq)
191{
192 int ret;
193 unsigned int offmask = irq < 24 ? MC13XXX_IRQMASK0 : MC13XXX_IRQMASK1;
194 u32 irqbit = 1 << (irq < 24 ? irq : irq - 24);
195 u32 mask;
196
197 if (irq < 0 || irq >= MC13XXX_NUM_IRQ)
198 return -EINVAL;
199
200 ret = mc13xxx_reg_read(mc13xxx, offmask, &mask);
201 if (ret)
202 return ret;
203
204 if (mask & irqbit)
205 /* already masked */
206 return 0;
207
208 return mc13xxx_reg_write(mc13xxx, offmask, mask | irqbit);
209}
210EXPORT_SYMBOL(mc13xxx_irq_mask);
211
212int mc13xxx_irq_unmask(struct mc13xxx *mc13xxx, int irq)
213{
214 int ret;
215 unsigned int offmask = irq < 24 ? MC13XXX_IRQMASK0 : MC13XXX_IRQMASK1;
216 u32 irqbit = 1 << (irq < 24 ? irq : irq - 24);
217 u32 mask;
218
219 if (irq < 0 || irq >= MC13XXX_NUM_IRQ)
220 return -EINVAL;
221
222 ret = mc13xxx_reg_read(mc13xxx, offmask, &mask);
223 if (ret)
224 return ret;
225
226 if (!(mask & irqbit))
227 /* already unmasked */
228 return 0;
229
230 return mc13xxx_reg_write(mc13xxx, offmask, mask & ~irqbit);
231}
232EXPORT_SYMBOL(mc13xxx_irq_unmask);
233
234int mc13xxx_irq_status(struct mc13xxx *mc13xxx, int irq,
235 int *enabled, int *pending)
236{
237 int ret;
238 unsigned int offmask = irq < 24 ? MC13XXX_IRQMASK0 : MC13XXX_IRQMASK1;
239 unsigned int offstat = irq < 24 ? MC13XXX_IRQSTAT0 : MC13XXX_IRQSTAT1;
240 u32 irqbit = 1 << (irq < 24 ? irq : irq - 24);
241
242 if (irq < 0 || irq >= MC13XXX_NUM_IRQ)
243 return -EINVAL;
244
245 if (enabled) {
246 u32 mask;
247
248 ret = mc13xxx_reg_read(mc13xxx, offmask, &mask);
249 if (ret)
250 return ret;
251
252 *enabled = mask & irqbit;
253 }
254
255 if (pending) {
256 u32 stat;
257
258 ret = mc13xxx_reg_read(mc13xxx, offstat, &stat);
259 if (ret)
260 return ret;
261
262 *pending = stat & irqbit;
263 }
264
265 return 0;
266}
267EXPORT_SYMBOL(mc13xxx_irq_status);
268
269int mc13xxx_irq_ack(struct mc13xxx *mc13xxx, int irq)
270{
271 unsigned int offstat = irq < 24 ? MC13XXX_IRQSTAT0 : MC13XXX_IRQSTAT1;
272 unsigned int val = 1 << (irq < 24 ? irq : irq - 24);
273
274 BUG_ON(irq < 0 || irq >= MC13XXX_NUM_IRQ);
275
276 return mc13xxx_reg_write(mc13xxx, offstat, val);
277}
278EXPORT_SYMBOL(mc13xxx_irq_ack);
279
280int mc13xxx_irq_request_nounmask(struct mc13xxx *mc13xxx, int irq,
281 irq_handler_t handler, const char *name, void *dev)
282{
283 BUG_ON(!mutex_is_locked(&mc13xxx->lock));
284 BUG_ON(!handler);
285
286 if (irq < 0 || irq >= MC13XXX_NUM_IRQ)
287 return -EINVAL;
288
289 if (mc13xxx->irqhandler[irq])
290 return -EBUSY;
291
292 mc13xxx->irqhandler[irq] = handler;
293 mc13xxx->irqdata[irq] = dev;
294
295 return 0;
296}
297EXPORT_SYMBOL(mc13xxx_irq_request_nounmask);
298
299int mc13xxx_irq_request(struct mc13xxx *mc13xxx, int irq,
300 irq_handler_t handler, const char *name, void *dev)
301{
302 int ret;
303
304 ret = mc13xxx_irq_request_nounmask(mc13xxx, irq, handler, name, dev);
305 if (ret)
306 return ret;
307
308 ret = mc13xxx_irq_unmask(mc13xxx, irq);
309 if (ret) {
310 mc13xxx->irqhandler[irq] = NULL;
311 mc13xxx->irqdata[irq] = NULL;
312 return ret;
313 }
314
315 return 0;
316}
317EXPORT_SYMBOL(mc13xxx_irq_request);
318
319int mc13xxx_irq_free(struct mc13xxx *mc13xxx, int irq, void *dev)
320{
321 int ret;
322 BUG_ON(!mutex_is_locked(&mc13xxx->lock));
323
324 if (irq < 0 || irq >= MC13XXX_NUM_IRQ || !mc13xxx->irqhandler[irq] ||
325 mc13xxx->irqdata[irq] != dev)
326 return -EINVAL;
327
328 ret = mc13xxx_irq_mask(mc13xxx, irq);
329 if (ret)
330 return ret;
331
332 mc13xxx->irqhandler[irq] = NULL;
333 mc13xxx->irqdata[irq] = NULL;
334
335 return 0;
336}
337EXPORT_SYMBOL(mc13xxx_irq_free);
338
339static inline irqreturn_t mc13xxx_irqhandler(struct mc13xxx *mc13xxx, int irq)
340{
341 return mc13xxx->irqhandler[irq](irq, mc13xxx->irqdata[irq]);
342}
343
344/*
345 * returns: number of handled irqs or negative error
346 * locking: holds mc13xxx->lock
347 */
348static int mc13xxx_irq_handle(struct mc13xxx *mc13xxx,
349 unsigned int offstat, unsigned int offmask, int baseirq)
350{
351 u32 stat, mask;
352 int ret = mc13xxx_reg_read(mc13xxx, offstat, &stat);
353 int num_handled = 0;
354
355 if (ret)
356 return ret;
357
358 ret = mc13xxx_reg_read(mc13xxx, offmask, &mask);
359 if (ret)
360 return ret;
361
362 while (stat & ~mask) {
363 int irq = __ffs(stat & ~mask);
364
365 stat &= ~(1 << irq);
366
367 if (likely(mc13xxx->irqhandler[baseirq + irq])) {
368 irqreturn_t handled;
369
370 handled = mc13xxx_irqhandler(mc13xxx, baseirq + irq);
371 if (handled == IRQ_HANDLED)
372 num_handled++;
373 } else {
374 dev_err(mc13xxx->dev,
375 "BUG: irq %u but no handler\n",
376 baseirq + irq);
377
378 mask |= 1 << irq;
379
380 ret = mc13xxx_reg_write(mc13xxx, offmask, mask);
381 }
382 }
383
384 return num_handled;
385}
386
387static irqreturn_t mc13xxx_irq_thread(int irq, void *data)
388{
389 struct mc13xxx *mc13xxx = data;
390 irqreturn_t ret;
391 int handled = 0;
392
393 mc13xxx_lock(mc13xxx);
394
395 ret = mc13xxx_irq_handle(mc13xxx, MC13XXX_IRQSTAT0,
396 MC13XXX_IRQMASK0, 0);
397 if (ret > 0)
398 handled = 1;
399
400 ret = mc13xxx_irq_handle(mc13xxx, MC13XXX_IRQSTAT1,
401 MC13XXX_IRQMASK1, 24);
402 if (ret > 0)
403 handled = 1;
404
405 mc13xxx_unlock(mc13xxx);
406
407 return IRQ_RETVAL(handled);
408}
409
410#define maskval(reg, mask) (((reg) & (mask)) >> __ffs(mask))
411static void mc13xxx_print_revision(struct mc13xxx *mc13xxx, u32 revision)
412{
413 dev_info(mc13xxx->dev, "%s: rev: %d.%d, "
414 "fin: %d, fab: %d, icid: %d/%d\n",
415 mc13xxx->variant->name,
416 maskval(revision, MC13XXX_REVISION_REVFULL),
417 maskval(revision, MC13XXX_REVISION_REVMETAL),
418 maskval(revision, MC13XXX_REVISION_FIN),
419 maskval(revision, MC13XXX_REVISION_FAB),
420 maskval(revision, MC13XXX_REVISION_ICID),
421 maskval(revision, MC13XXX_REVISION_ICIDCODE));
422}
423
424static void mc34708_print_revision(struct mc13xxx *mc13xxx, u32 revision)
425{
426 dev_info(mc13xxx->dev, "%s: rev %d.%d, fin: %d, fab: %d\n",
427 mc13xxx->variant->name,
428 maskval(revision, MC34708_REVISION_REVFULL),
429 maskval(revision, MC34708_REVISION_REVMETAL),
430 maskval(revision, MC34708_REVISION_FIN),
431 maskval(revision, MC34708_REVISION_FAB));
432}
433
434/* These are only exported for mc13xxx-i2c and mc13xxx-spi */
435struct mc13xxx_variant mc13xxx_variant_mc13783 = {
436 .name = "mc13783",
437 .print_revision = mc13xxx_print_revision,
438};
439EXPORT_SYMBOL_GPL(mc13xxx_variant_mc13783);
440
441struct mc13xxx_variant mc13xxx_variant_mc13892 = {
442 .name = "mc13892",
443 .print_revision = mc13xxx_print_revision,
444};
445EXPORT_SYMBOL_GPL(mc13xxx_variant_mc13892);
446
447struct mc13xxx_variant mc13xxx_variant_mc34708 = {
448 .name = "mc34708",
449 .print_revision = mc34708_print_revision,
450};
451EXPORT_SYMBOL_GPL(mc13xxx_variant_mc34708);
452
453static const char *mc13xxx_get_chipname(struct mc13xxx *mc13xxx)
454{
455 return mc13xxx->variant->name;
456}
457
458int mc13xxx_get_flags(struct mc13xxx *mc13xxx)
459{
460 return mc13xxx->flags;
461}
462EXPORT_SYMBOL(mc13xxx_get_flags);
463
464#define MC13XXX_ADC1_CHAN0_SHIFT 5
465#define MC13XXX_ADC1_CHAN1_SHIFT 8
466#define MC13783_ADC1_ATO_SHIFT 11
467#define MC13783_ADC1_ATOX (1 << 19)
468
469struct mc13xxx_adcdone_data {
470 struct mc13xxx *mc13xxx;
471 struct completion done;
472};
473
474static irqreturn_t mc13xxx_handler_adcdone(int irq, void *data)
475{
476 struct mc13xxx_adcdone_data *adcdone_data = data;
477
478 mc13xxx_irq_ack(adcdone_data->mc13xxx, irq);
479
480 complete_all(&adcdone_data->done);
481
482 return IRQ_HANDLED;
483}
484
485#define MC13XXX_ADC_WORKING (1 << 0)
486
487int mc13xxx_adc_do_conversion(struct mc13xxx *mc13xxx, unsigned int mode,
488 unsigned int channel, u8 ato, bool atox,
489 unsigned int *sample)
490{
491 u32 adc0, adc1, old_adc0;
492 int i, ret;
493 struct mc13xxx_adcdone_data adcdone_data = {
494 .mc13xxx = mc13xxx,
495 };
496 init_completion(&adcdone_data.done);
497
498 dev_dbg(mc13xxx->dev, "%s\n", __func__);
499
500 mc13xxx_lock(mc13xxx);
501
502 if (mc13xxx->adcflags & MC13XXX_ADC_WORKING) {
503 ret = -EBUSY;
504 goto out;
505 }
506
507 mc13xxx->adcflags |= MC13XXX_ADC_WORKING;
508
509 mc13xxx_reg_read(mc13xxx, MC13XXX_ADC0, &old_adc0);
510
511 adc0 = MC13XXX_ADC0_ADINC1 | MC13XXX_ADC0_ADINC2;
512 adc1 = MC13XXX_ADC1_ADEN | MC13XXX_ADC1_ADTRIGIGN | MC13XXX_ADC1_ASC;
513
514 if (channel > 7)
515 adc1 |= MC13XXX_ADC1_ADSEL;
516
517 switch (mode) {
518 case MC13XXX_ADC_MODE_TS:
519 adc0 |= MC13XXX_ADC0_ADREFEN | MC13XXX_ADC0_TSMOD0 |
520 MC13XXX_ADC0_TSMOD1;
521 adc1 |= 4 << MC13XXX_ADC1_CHAN1_SHIFT;
522 break;
523
524 case MC13XXX_ADC_MODE_SINGLE_CHAN:
525 adc0 |= old_adc0 & MC13XXX_ADC0_CONFIG_MASK;
526 adc1 |= (channel & 0x7) << MC13XXX_ADC1_CHAN0_SHIFT;
527 adc1 |= MC13XXX_ADC1_RAND;
528 break;
529
530 case MC13XXX_ADC_MODE_MULT_CHAN:
531 adc0 |= old_adc0 & MC13XXX_ADC0_CONFIG_MASK;
532 adc1 |= 4 << MC13XXX_ADC1_CHAN1_SHIFT;
533 break;
534
535 default:
536 mc13xxx_unlock(mc13xxx);
537 return -EINVAL;
538 }
539
540 adc1 |= ato << MC13783_ADC1_ATO_SHIFT;
541 if (atox)
542 adc1 |= MC13783_ADC1_ATOX;
543
544 dev_dbg(mc13xxx->dev, "%s: request irq\n", __func__);
545 mc13xxx_irq_request(mc13xxx, MC13XXX_IRQ_ADCDONE,
546 mc13xxx_handler_adcdone, __func__, &adcdone_data);
547 mc13xxx_irq_ack(mc13xxx, MC13XXX_IRQ_ADCDONE);
548
549 mc13xxx_reg_write(mc13xxx, MC13XXX_ADC0, adc0);
550 mc13xxx_reg_write(mc13xxx, MC13XXX_ADC1, adc1);
551
552 mc13xxx_unlock(mc13xxx);
553
554 ret = wait_for_completion_interruptible_timeout(&adcdone_data.done, HZ);
555
556 if (!ret)
557 ret = -ETIMEDOUT;
558
559 mc13xxx_lock(mc13xxx);
560
561 mc13xxx_irq_free(mc13xxx, MC13XXX_IRQ_ADCDONE, &adcdone_data);
562
563 if (ret > 0)
564 for (i = 0; i < 4; ++i) {
565 ret = mc13xxx_reg_read(mc13xxx,
566 MC13XXX_ADC2, &sample[i]);
567 if (ret)
568 break;
569 }
570
571 if (mode == MC13XXX_ADC_MODE_TS)
572 /* restore TSMOD */
573 mc13xxx_reg_write(mc13xxx, MC13XXX_ADC0, old_adc0);
574
575 mc13xxx->adcflags &= ~MC13XXX_ADC_WORKING;
576out:
577 mc13xxx_unlock(mc13xxx);
578
579 return ret;
580}
581EXPORT_SYMBOL_GPL(mc13xxx_adc_do_conversion);
582
583static int mc13xxx_add_subdevice_pdata(struct mc13xxx *mc13xxx,
584 const char *format, void *pdata, size_t pdata_size)
585{
586 char buf[30];
587 const char *name = mc13xxx_get_chipname(mc13xxx);
588
589 struct mfd_cell cell = {
590 .platform_data = pdata,
591 .pdata_size = pdata_size,
592 };
593
594 /* there is no asnprintf in the kernel :-( */
595 if (snprintf(buf, sizeof(buf), format, name) > sizeof(buf))
596 return -E2BIG;
597
598 cell.name = kmemdup(buf, strlen(buf) + 1, GFP_KERNEL);
599 if (!cell.name)
600 return -ENOMEM;
601
602 return mfd_add_devices(mc13xxx->dev, -1, &cell, 1, NULL, 0, NULL);
603}
604
605static int mc13xxx_add_subdevice(struct mc13xxx *mc13xxx, const char *format)
606{
607 return mc13xxx_add_subdevice_pdata(mc13xxx, format, NULL, 0);
608}
609
610#ifdef CONFIG_OF
611static int mc13xxx_probe_flags_dt(struct mc13xxx *mc13xxx)
612{
613 struct device_node *np = mc13xxx->dev->of_node;
614
615 if (!np)
616 return -ENODEV;
617
618 if (of_get_property(np, "fsl,mc13xxx-uses-adc", NULL))
619 mc13xxx->flags |= MC13XXX_USE_ADC;
620
621 if (of_get_property(np, "fsl,mc13xxx-uses-codec", NULL))
622 mc13xxx->flags |= MC13XXX_USE_CODEC;
623
624 if (of_get_property(np, "fsl,mc13xxx-uses-rtc", NULL))
625 mc13xxx->flags |= MC13XXX_USE_RTC;
626
627 if (of_get_property(np, "fsl,mc13xxx-uses-touch", NULL))
628 mc13xxx->flags |= MC13XXX_USE_TOUCHSCREEN;
629
630 return 0;
631}
632#else
633static inline int mc13xxx_probe_flags_dt(struct mc13xxx *mc13xxx)
634{
635 return -ENODEV;
636}
637#endif
638
639int mc13xxx_common_init(struct device *dev)
640{
641 struct mc13xxx_platform_data *pdata = dev_get_platdata(dev);
642 struct mc13xxx *mc13xxx = dev_get_drvdata(dev);
643 int ret;
644 u32 revision;
645
646 mc13xxx->dev = dev;
647
648 ret = mc13xxx_reg_read(mc13xxx, MC13XXX_REVISION, &revision);
649 if (ret)
650 return ret;
651
652 mc13xxx->variant->print_revision(mc13xxx, revision);
653
654 /* mask all irqs */
655 ret = mc13xxx_reg_write(mc13xxx, MC13XXX_IRQMASK0, 0x00ffffff);
656 if (ret)
657 return ret;
658
659 ret = mc13xxx_reg_write(mc13xxx, MC13XXX_IRQMASK1, 0x00ffffff);
660 if (ret)
661 return ret;
662
663 ret = request_threaded_irq(mc13xxx->irq, NULL, mc13xxx_irq_thread,
664 IRQF_ONESHOT | IRQF_TRIGGER_HIGH, "mc13xxx", mc13xxx);
665 if (ret)
666 return ret;
667
668 mutex_init(&mc13xxx->lock);
669
670 if (mc13xxx_probe_flags_dt(mc13xxx) < 0 && pdata)
671 mc13xxx->flags = pdata->flags;
672
673 if (mc13xxx->flags & MC13XXX_USE_ADC)
674 mc13xxx_add_subdevice(mc13xxx, "%s-adc");
675
676 if (mc13xxx->flags & MC13XXX_USE_CODEC)
677 mc13xxx_add_subdevice_pdata(mc13xxx, "%s-codec",
678 pdata->codec, sizeof(*pdata->codec));
679
680 if (mc13xxx->flags & MC13XXX_USE_RTC)
681 mc13xxx_add_subdevice(mc13xxx, "%s-rtc");
682
683 if (mc13xxx->flags & MC13XXX_USE_TOUCHSCREEN)
684 mc13xxx_add_subdevice_pdata(mc13xxx, "%s-ts",
685 &pdata->touch, sizeof(pdata->touch));
686
687 if (pdata) {
688 mc13xxx_add_subdevice_pdata(mc13xxx, "%s-regulator",
689 &pdata->regulators, sizeof(pdata->regulators));
690 mc13xxx_add_subdevice_pdata(mc13xxx, "%s-led",
691 pdata->leds, sizeof(*pdata->leds));
692 mc13xxx_add_subdevice_pdata(mc13xxx, "%s-pwrbutton",
693 pdata->buttons, sizeof(*pdata->buttons));
694 } else {
695 mc13xxx_add_subdevice(mc13xxx, "%s-regulator");
696 mc13xxx_add_subdevice(mc13xxx, "%s-led");
697 mc13xxx_add_subdevice(mc13xxx, "%s-pwrbutton");
698 }
699
700 return 0;
701}
702EXPORT_SYMBOL_GPL(mc13xxx_common_init);
703
704int mc13xxx_common_exit(struct device *dev)
705{
706 struct mc13xxx *mc13xxx = dev_get_drvdata(dev);
707
708 free_irq(mc13xxx->irq, mc13xxx);
709 mfd_remove_devices(dev);
710 mutex_destroy(&mc13xxx->lock);
711
712 return 0;
713}
714EXPORT_SYMBOL_GPL(mc13xxx_common_exit);
715
716MODULE_DESCRIPTION("Core driver for Freescale MC13XXX PMIC");
717MODULE_AUTHOR("Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>");
718MODULE_LICENSE("GPL v2");