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1// SPDX-License-Identifier: GPL-2.0+
2//
3// Copyright (c) 2012 Samsung Electronics Co., Ltd
4// http://www.samsung.com
5
6#include <linux/module.h>
7#include <linux/moduleparam.h>
8#include <linux/init.h>
9#include <linux/err.h>
10#include <linux/slab.h>
11#include <linux/i2c.h>
12#include <linux/of.h>
13#include <linux/interrupt.h>
14#include <linux/pm_runtime.h>
15#include <linux/mutex.h>
16#include <linux/mfd/core.h>
17#include <linux/mfd/samsung/core.h>
18#include <linux/mfd/samsung/irq.h>
19#include <linux/mfd/samsung/s2mpa01.h>
20#include <linux/mfd/samsung/s2mps11.h>
21#include <linux/mfd/samsung/s2mps13.h>
22#include <linux/mfd/samsung/s2mps14.h>
23#include <linux/mfd/samsung/s2mps15.h>
24#include <linux/mfd/samsung/s2mpu02.h>
25#include <linux/mfd/samsung/s5m8767.h>
26#include <linux/regmap.h>
27
28static const struct mfd_cell s5m8767_devs[] = {
29 { .name = "s5m8767-pmic", },
30 { .name = "s5m-rtc", },
31 {
32 .name = "s5m8767-clk",
33 .of_compatible = "samsung,s5m8767-clk",
34 },
35};
36
37static const struct mfd_cell s2mps11_devs[] = {
38 { .name = "s2mps11-regulator", },
39 { .name = "s2mps14-rtc", },
40 {
41 .name = "s2mps11-clk",
42 .of_compatible = "samsung,s2mps11-clk",
43 },
44};
45
46static const struct mfd_cell s2mps13_devs[] = {
47 { .name = "s2mps13-regulator", },
48 { .name = "s2mps13-rtc", },
49 {
50 .name = "s2mps13-clk",
51 .of_compatible = "samsung,s2mps13-clk",
52 },
53};
54
55static const struct mfd_cell s2mps14_devs[] = {
56 { .name = "s2mps14-regulator", },
57 { .name = "s2mps14-rtc", },
58 {
59 .name = "s2mps14-clk",
60 .of_compatible = "samsung,s2mps14-clk",
61 },
62};
63
64static const struct mfd_cell s2mps15_devs[] = {
65 { .name = "s2mps15-regulator", },
66 { .name = "s2mps15-rtc", },
67 {
68 .name = "s2mps13-clk",
69 .of_compatible = "samsung,s2mps13-clk",
70 },
71};
72
73static const struct mfd_cell s2mpa01_devs[] = {
74 { .name = "s2mpa01-pmic", },
75 { .name = "s2mps14-rtc", },
76};
77
78static const struct mfd_cell s2mpu02_devs[] = {
79 { .name = "s2mpu02-regulator", },
80};
81
82static const struct of_device_id sec_dt_match[] = {
83 {
84 .compatible = "samsung,s5m8767-pmic",
85 .data = (void *)S5M8767X,
86 }, {
87 .compatible = "samsung,s2mps11-pmic",
88 .data = (void *)S2MPS11X,
89 }, {
90 .compatible = "samsung,s2mps13-pmic",
91 .data = (void *)S2MPS13X,
92 }, {
93 .compatible = "samsung,s2mps14-pmic",
94 .data = (void *)S2MPS14X,
95 }, {
96 .compatible = "samsung,s2mps15-pmic",
97 .data = (void *)S2MPS15X,
98 }, {
99 .compatible = "samsung,s2mpa01-pmic",
100 .data = (void *)S2MPA01,
101 }, {
102 .compatible = "samsung,s2mpu02-pmic",
103 .data = (void *)S2MPU02,
104 }, {
105 /* Sentinel */
106 },
107};
108MODULE_DEVICE_TABLE(of, sec_dt_match);
109
110static bool s2mpa01_volatile(struct device *dev, unsigned int reg)
111{
112 switch (reg) {
113 case S2MPA01_REG_INT1M:
114 case S2MPA01_REG_INT2M:
115 case S2MPA01_REG_INT3M:
116 return false;
117 default:
118 return true;
119 }
120}
121
122static bool s2mps11_volatile(struct device *dev, unsigned int reg)
123{
124 switch (reg) {
125 case S2MPS11_REG_INT1M:
126 case S2MPS11_REG_INT2M:
127 case S2MPS11_REG_INT3M:
128 return false;
129 default:
130 return true;
131 }
132}
133
134static bool s2mpu02_volatile(struct device *dev, unsigned int reg)
135{
136 switch (reg) {
137 case S2MPU02_REG_INT1M:
138 case S2MPU02_REG_INT2M:
139 case S2MPU02_REG_INT3M:
140 return false;
141 default:
142 return true;
143 }
144}
145
146static const struct regmap_config sec_regmap_config = {
147 .reg_bits = 8,
148 .val_bits = 8,
149};
150
151static const struct regmap_config s2mpa01_regmap_config = {
152 .reg_bits = 8,
153 .val_bits = 8,
154
155 .max_register = S2MPA01_REG_LDO_OVCB4,
156 .volatile_reg = s2mpa01_volatile,
157 .cache_type = REGCACHE_FLAT,
158};
159
160static const struct regmap_config s2mps11_regmap_config = {
161 .reg_bits = 8,
162 .val_bits = 8,
163
164 .max_register = S2MPS11_REG_L38CTRL,
165 .volatile_reg = s2mps11_volatile,
166 .cache_type = REGCACHE_FLAT,
167};
168
169static const struct regmap_config s2mps13_regmap_config = {
170 .reg_bits = 8,
171 .val_bits = 8,
172
173 .max_register = S2MPS13_REG_LDODSCH5,
174 .volatile_reg = s2mps11_volatile,
175 .cache_type = REGCACHE_FLAT,
176};
177
178static const struct regmap_config s2mps14_regmap_config = {
179 .reg_bits = 8,
180 .val_bits = 8,
181
182 .max_register = S2MPS14_REG_LDODSCH3,
183 .volatile_reg = s2mps11_volatile,
184 .cache_type = REGCACHE_FLAT,
185};
186
187static const struct regmap_config s2mps15_regmap_config = {
188 .reg_bits = 8,
189 .val_bits = 8,
190
191 .max_register = S2MPS15_REG_LDODSCH4,
192 .volatile_reg = s2mps11_volatile,
193 .cache_type = REGCACHE_FLAT,
194};
195
196static const struct regmap_config s2mpu02_regmap_config = {
197 .reg_bits = 8,
198 .val_bits = 8,
199
200 .max_register = S2MPU02_REG_DVSDATA,
201 .volatile_reg = s2mpu02_volatile,
202 .cache_type = REGCACHE_FLAT,
203};
204
205static const struct regmap_config s5m8767_regmap_config = {
206 .reg_bits = 8,
207 .val_bits = 8,
208
209 .max_register = S5M8767_REG_LDO28CTRL,
210 .volatile_reg = s2mps11_volatile,
211 .cache_type = REGCACHE_FLAT,
212};
213
214static void sec_pmic_dump_rev(struct sec_pmic_dev *sec_pmic)
215{
216 unsigned int val;
217
218 /* For each device type, the REG_ID is always the first register */
219 if (!regmap_read(sec_pmic->regmap_pmic, S2MPS11_REG_ID, &val))
220 dev_dbg(sec_pmic->dev, "Revision: 0x%x\n", val);
221}
222
223static void sec_pmic_configure(struct sec_pmic_dev *sec_pmic)
224{
225 int err;
226
227 if (sec_pmic->device_type != S2MPS13X)
228 return;
229
230 if (sec_pmic->pdata->disable_wrstbi) {
231 /*
232 * If WRSTBI pin is pulled down this feature must be disabled
233 * because each Suspend to RAM will trigger buck voltage reset
234 * to default values.
235 */
236 err = regmap_update_bits(sec_pmic->regmap_pmic,
237 S2MPS13_REG_WRSTBI,
238 S2MPS13_REG_WRSTBI_MASK, 0x0);
239 if (err)
240 dev_warn(sec_pmic->dev,
241 "Cannot initialize WRSTBI config: %d\n",
242 err);
243 }
244}
245
246/*
247 * Only the common platform data elements for s5m8767 are parsed here from the
248 * device tree. Other sub-modules of s5m8767 such as pmic, rtc , charger and
249 * others have to parse their own platform data elements from device tree.
250 *
251 * The s5m8767 platform data structure is instantiated here and the drivers for
252 * the sub-modules need not instantiate another instance while parsing their
253 * platform data.
254 */
255static struct sec_platform_data *
256sec_pmic_i2c_parse_dt_pdata(struct device *dev)
257{
258 struct sec_platform_data *pd;
259
260 pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL);
261 if (!pd)
262 return ERR_PTR(-ENOMEM);
263
264 pd->manual_poweroff = of_property_read_bool(dev->of_node,
265 "samsung,s2mps11-acokb-ground");
266 pd->disable_wrstbi = of_property_read_bool(dev->of_node,
267 "samsung,s2mps11-wrstbi-ground");
268 return pd;
269}
270
271static int sec_pmic_probe(struct i2c_client *i2c)
272{
273 const struct regmap_config *regmap;
274 struct sec_platform_data *pdata;
275 const struct mfd_cell *sec_devs;
276 struct sec_pmic_dev *sec_pmic;
277 int ret, num_sec_devs;
278
279 sec_pmic = devm_kzalloc(&i2c->dev, sizeof(struct sec_pmic_dev),
280 GFP_KERNEL);
281 if (sec_pmic == NULL)
282 return -ENOMEM;
283
284 i2c_set_clientdata(i2c, sec_pmic);
285 sec_pmic->dev = &i2c->dev;
286 sec_pmic->i2c = i2c;
287 sec_pmic->irq = i2c->irq;
288
289 pdata = sec_pmic_i2c_parse_dt_pdata(sec_pmic->dev);
290 if (IS_ERR(pdata)) {
291 ret = PTR_ERR(pdata);
292 return ret;
293 }
294
295 sec_pmic->device_type = (unsigned long)of_device_get_match_data(sec_pmic->dev);
296 sec_pmic->pdata = pdata;
297
298 switch (sec_pmic->device_type) {
299 case S2MPA01:
300 regmap = &s2mpa01_regmap_config;
301 break;
302 case S2MPS11X:
303 regmap = &s2mps11_regmap_config;
304 break;
305 case S2MPS13X:
306 regmap = &s2mps13_regmap_config;
307 break;
308 case S2MPS14X:
309 regmap = &s2mps14_regmap_config;
310 break;
311 case S2MPS15X:
312 regmap = &s2mps15_regmap_config;
313 break;
314 case S5M8767X:
315 regmap = &s5m8767_regmap_config;
316 break;
317 case S2MPU02:
318 regmap = &s2mpu02_regmap_config;
319 break;
320 default:
321 regmap = &sec_regmap_config;
322 break;
323 }
324
325 sec_pmic->regmap_pmic = devm_regmap_init_i2c(i2c, regmap);
326 if (IS_ERR(sec_pmic->regmap_pmic)) {
327 ret = PTR_ERR(sec_pmic->regmap_pmic);
328 dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
329 ret);
330 return ret;
331 }
332
333 sec_irq_init(sec_pmic);
334
335 pm_runtime_set_active(sec_pmic->dev);
336
337 switch (sec_pmic->device_type) {
338 case S5M8767X:
339 sec_devs = s5m8767_devs;
340 num_sec_devs = ARRAY_SIZE(s5m8767_devs);
341 break;
342 case S2MPA01:
343 sec_devs = s2mpa01_devs;
344 num_sec_devs = ARRAY_SIZE(s2mpa01_devs);
345 break;
346 case S2MPS11X:
347 sec_devs = s2mps11_devs;
348 num_sec_devs = ARRAY_SIZE(s2mps11_devs);
349 break;
350 case S2MPS13X:
351 sec_devs = s2mps13_devs;
352 num_sec_devs = ARRAY_SIZE(s2mps13_devs);
353 break;
354 case S2MPS14X:
355 sec_devs = s2mps14_devs;
356 num_sec_devs = ARRAY_SIZE(s2mps14_devs);
357 break;
358 case S2MPS15X:
359 sec_devs = s2mps15_devs;
360 num_sec_devs = ARRAY_SIZE(s2mps15_devs);
361 break;
362 case S2MPU02:
363 sec_devs = s2mpu02_devs;
364 num_sec_devs = ARRAY_SIZE(s2mpu02_devs);
365 break;
366 default:
367 dev_err(&i2c->dev, "Unsupported device type (%lu)\n",
368 sec_pmic->device_type);
369 return -ENODEV;
370 }
371 ret = devm_mfd_add_devices(sec_pmic->dev, -1, sec_devs, num_sec_devs,
372 NULL, 0, NULL);
373 if (ret)
374 return ret;
375
376 sec_pmic_configure(sec_pmic);
377 sec_pmic_dump_rev(sec_pmic);
378
379 return ret;
380}
381
382static void sec_pmic_shutdown(struct i2c_client *i2c)
383{
384 struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c);
385 unsigned int reg, mask;
386
387 if (!sec_pmic->pdata->manual_poweroff)
388 return;
389
390 switch (sec_pmic->device_type) {
391 case S2MPS11X:
392 reg = S2MPS11_REG_CTRL1;
393 mask = S2MPS11_CTRL1_PWRHOLD_MASK;
394 break;
395 default:
396 /*
397 * Currently only one board with S2MPS11 needs this, so just
398 * ignore the rest.
399 */
400 dev_warn(sec_pmic->dev,
401 "Unsupported device %lu for manual power off\n",
402 sec_pmic->device_type);
403 return;
404 }
405
406 regmap_update_bits(sec_pmic->regmap_pmic, reg, mask, 0);
407}
408
409static int sec_pmic_suspend(struct device *dev)
410{
411 struct i2c_client *i2c = to_i2c_client(dev);
412 struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c);
413
414 if (device_may_wakeup(dev))
415 enable_irq_wake(sec_pmic->irq);
416 /*
417 * PMIC IRQ must be disabled during suspend for RTC alarm
418 * to work properly.
419 * When device is woken up from suspend, an
420 * interrupt occurs before resuming I2C bus controller.
421 * The interrupt is handled by regmap_irq_thread which tries
422 * to read RTC registers. This read fails (I2C is still
423 * suspended) and RTC Alarm interrupt is disabled.
424 */
425 disable_irq(sec_pmic->irq);
426
427 return 0;
428}
429
430static int sec_pmic_resume(struct device *dev)
431{
432 struct i2c_client *i2c = to_i2c_client(dev);
433 struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c);
434
435 if (device_may_wakeup(dev))
436 disable_irq_wake(sec_pmic->irq);
437 enable_irq(sec_pmic->irq);
438
439 return 0;
440}
441
442static DEFINE_SIMPLE_DEV_PM_OPS(sec_pmic_pm_ops,
443 sec_pmic_suspend, sec_pmic_resume);
444
445static struct i2c_driver sec_pmic_driver = {
446 .driver = {
447 .name = "sec_pmic",
448 .pm = pm_sleep_ptr(&sec_pmic_pm_ops),
449 .of_match_table = sec_dt_match,
450 },
451 .probe = sec_pmic_probe,
452 .shutdown = sec_pmic_shutdown,
453};
454module_i2c_driver(sec_pmic_driver);
455
456MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
457MODULE_DESCRIPTION("Core support for the S5M MFD");
458MODULE_LICENSE("GPL");
1// SPDX-License-Identifier: GPL-2.0+
2//
3// Copyright (c) 2012 Samsung Electronics Co., Ltd
4// http://www.samsung.com
5
6#include <linux/module.h>
7#include <linux/moduleparam.h>
8#include <linux/init.h>
9#include <linux/err.h>
10#include <linux/slab.h>
11#include <linux/i2c.h>
12#include <linux/of.h>
13#include <linux/interrupt.h>
14#include <linux/pm_runtime.h>
15#include <linux/mutex.h>
16#include <linux/mfd/core.h>
17#include <linux/mfd/samsung/core.h>
18#include <linux/mfd/samsung/irq.h>
19#include <linux/mfd/samsung/s2mpa01.h>
20#include <linux/mfd/samsung/s2mps11.h>
21#include <linux/mfd/samsung/s2mps13.h>
22#include <linux/mfd/samsung/s2mps14.h>
23#include <linux/mfd/samsung/s2mps15.h>
24#include <linux/mfd/samsung/s2mpu02.h>
25#include <linux/mfd/samsung/s5m8767.h>
26#include <linux/regmap.h>
27
28static const struct mfd_cell s5m8767_devs[] = {
29 { .name = "s5m8767-pmic", },
30 { .name = "s5m-rtc", },
31 {
32 .name = "s5m8767-clk",
33 .of_compatible = "samsung,s5m8767-clk",
34 },
35};
36
37static const struct mfd_cell s2dos05_devs[] = {
38 { .name = "s2dos05-regulator", },
39};
40
41static const struct mfd_cell s2mps11_devs[] = {
42 { .name = "s2mps11-regulator", },
43 { .name = "s2mps14-rtc", },
44 {
45 .name = "s2mps11-clk",
46 .of_compatible = "samsung,s2mps11-clk",
47 },
48};
49
50static const struct mfd_cell s2mps13_devs[] = {
51 { .name = "s2mps13-regulator", },
52 { .name = "s2mps13-rtc", },
53 {
54 .name = "s2mps13-clk",
55 .of_compatible = "samsung,s2mps13-clk",
56 },
57};
58
59static const struct mfd_cell s2mps14_devs[] = {
60 { .name = "s2mps14-regulator", },
61 { .name = "s2mps14-rtc", },
62 {
63 .name = "s2mps14-clk",
64 .of_compatible = "samsung,s2mps14-clk",
65 },
66};
67
68static const struct mfd_cell s2mps15_devs[] = {
69 { .name = "s2mps15-regulator", },
70 { .name = "s2mps15-rtc", },
71 {
72 .name = "s2mps13-clk",
73 .of_compatible = "samsung,s2mps13-clk",
74 },
75};
76
77static const struct mfd_cell s2mpa01_devs[] = {
78 { .name = "s2mpa01-pmic", },
79 { .name = "s2mps14-rtc", },
80};
81
82static const struct mfd_cell s2mpu02_devs[] = {
83 { .name = "s2mpu02-regulator", },
84};
85
86static const struct of_device_id sec_dt_match[] = {
87 {
88 .compatible = "samsung,s5m8767-pmic",
89 .data = (void *)S5M8767X,
90 }, {
91 .compatible = "samsung,s2dos05",
92 .data = (void *)S2DOS05,
93 }, {
94 .compatible = "samsung,s2mps11-pmic",
95 .data = (void *)S2MPS11X,
96 }, {
97 .compatible = "samsung,s2mps13-pmic",
98 .data = (void *)S2MPS13X,
99 }, {
100 .compatible = "samsung,s2mps14-pmic",
101 .data = (void *)S2MPS14X,
102 }, {
103 .compatible = "samsung,s2mps15-pmic",
104 .data = (void *)S2MPS15X,
105 }, {
106 .compatible = "samsung,s2mpa01-pmic",
107 .data = (void *)S2MPA01,
108 }, {
109 .compatible = "samsung,s2mpu02-pmic",
110 .data = (void *)S2MPU02,
111 }, {
112 /* Sentinel */
113 },
114};
115MODULE_DEVICE_TABLE(of, sec_dt_match);
116
117static bool s2mpa01_volatile(struct device *dev, unsigned int reg)
118{
119 switch (reg) {
120 case S2MPA01_REG_INT1M:
121 case S2MPA01_REG_INT2M:
122 case S2MPA01_REG_INT3M:
123 return false;
124 default:
125 return true;
126 }
127}
128
129static bool s2mps11_volatile(struct device *dev, unsigned int reg)
130{
131 switch (reg) {
132 case S2MPS11_REG_INT1M:
133 case S2MPS11_REG_INT2M:
134 case S2MPS11_REG_INT3M:
135 return false;
136 default:
137 return true;
138 }
139}
140
141static bool s2mpu02_volatile(struct device *dev, unsigned int reg)
142{
143 switch (reg) {
144 case S2MPU02_REG_INT1M:
145 case S2MPU02_REG_INT2M:
146 case S2MPU02_REG_INT3M:
147 return false;
148 default:
149 return true;
150 }
151}
152
153static const struct regmap_config sec_regmap_config = {
154 .reg_bits = 8,
155 .val_bits = 8,
156};
157
158static const struct regmap_config s2mpa01_regmap_config = {
159 .reg_bits = 8,
160 .val_bits = 8,
161
162 .max_register = S2MPA01_REG_LDO_OVCB4,
163 .volatile_reg = s2mpa01_volatile,
164 .cache_type = REGCACHE_FLAT,
165};
166
167static const struct regmap_config s2mps11_regmap_config = {
168 .reg_bits = 8,
169 .val_bits = 8,
170
171 .max_register = S2MPS11_REG_L38CTRL,
172 .volatile_reg = s2mps11_volatile,
173 .cache_type = REGCACHE_FLAT,
174};
175
176static const struct regmap_config s2mps13_regmap_config = {
177 .reg_bits = 8,
178 .val_bits = 8,
179
180 .max_register = S2MPS13_REG_LDODSCH5,
181 .volatile_reg = s2mps11_volatile,
182 .cache_type = REGCACHE_FLAT,
183};
184
185static const struct regmap_config s2mps14_regmap_config = {
186 .reg_bits = 8,
187 .val_bits = 8,
188
189 .max_register = S2MPS14_REG_LDODSCH3,
190 .volatile_reg = s2mps11_volatile,
191 .cache_type = REGCACHE_FLAT,
192};
193
194static const struct regmap_config s2mps15_regmap_config = {
195 .reg_bits = 8,
196 .val_bits = 8,
197
198 .max_register = S2MPS15_REG_LDODSCH4,
199 .volatile_reg = s2mps11_volatile,
200 .cache_type = REGCACHE_FLAT,
201};
202
203static const struct regmap_config s2mpu02_regmap_config = {
204 .reg_bits = 8,
205 .val_bits = 8,
206
207 .max_register = S2MPU02_REG_DVSDATA,
208 .volatile_reg = s2mpu02_volatile,
209 .cache_type = REGCACHE_FLAT,
210};
211
212static const struct regmap_config s5m8767_regmap_config = {
213 .reg_bits = 8,
214 .val_bits = 8,
215
216 .max_register = S5M8767_REG_LDO28CTRL,
217 .volatile_reg = s2mps11_volatile,
218 .cache_type = REGCACHE_FLAT,
219};
220
221static void sec_pmic_dump_rev(struct sec_pmic_dev *sec_pmic)
222{
223 unsigned int val;
224
225 /* For each device type, the REG_ID is always the first register */
226 if (!regmap_read(sec_pmic->regmap_pmic, S2MPS11_REG_ID, &val))
227 dev_dbg(sec_pmic->dev, "Revision: 0x%x\n", val);
228}
229
230static void sec_pmic_configure(struct sec_pmic_dev *sec_pmic)
231{
232 int err;
233
234 if (sec_pmic->device_type != S2MPS13X)
235 return;
236
237 if (sec_pmic->pdata->disable_wrstbi) {
238 /*
239 * If WRSTBI pin is pulled down this feature must be disabled
240 * because each Suspend to RAM will trigger buck voltage reset
241 * to default values.
242 */
243 err = regmap_update_bits(sec_pmic->regmap_pmic,
244 S2MPS13_REG_WRSTBI,
245 S2MPS13_REG_WRSTBI_MASK, 0x0);
246 if (err)
247 dev_warn(sec_pmic->dev,
248 "Cannot initialize WRSTBI config: %d\n",
249 err);
250 }
251}
252
253/*
254 * Only the common platform data elements for s5m8767 are parsed here from the
255 * device tree. Other sub-modules of s5m8767 such as pmic, rtc , charger and
256 * others have to parse their own platform data elements from device tree.
257 *
258 * The s5m8767 platform data structure is instantiated here and the drivers for
259 * the sub-modules need not instantiate another instance while parsing their
260 * platform data.
261 */
262static struct sec_platform_data *
263sec_pmic_i2c_parse_dt_pdata(struct device *dev)
264{
265 struct sec_platform_data *pd;
266
267 pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL);
268 if (!pd)
269 return ERR_PTR(-ENOMEM);
270
271 pd->manual_poweroff = of_property_read_bool(dev->of_node,
272 "samsung,s2mps11-acokb-ground");
273 pd->disable_wrstbi = of_property_read_bool(dev->of_node,
274 "samsung,s2mps11-wrstbi-ground");
275 return pd;
276}
277
278static int sec_pmic_probe(struct i2c_client *i2c)
279{
280 const struct regmap_config *regmap;
281 struct sec_platform_data *pdata;
282 const struct mfd_cell *sec_devs;
283 struct sec_pmic_dev *sec_pmic;
284 int ret, num_sec_devs;
285
286 sec_pmic = devm_kzalloc(&i2c->dev, sizeof(struct sec_pmic_dev),
287 GFP_KERNEL);
288 if (sec_pmic == NULL)
289 return -ENOMEM;
290
291 i2c_set_clientdata(i2c, sec_pmic);
292 sec_pmic->dev = &i2c->dev;
293 sec_pmic->i2c = i2c;
294 sec_pmic->irq = i2c->irq;
295
296 pdata = sec_pmic_i2c_parse_dt_pdata(sec_pmic->dev);
297 if (IS_ERR(pdata)) {
298 ret = PTR_ERR(pdata);
299 return ret;
300 }
301
302 sec_pmic->device_type = (unsigned long)of_device_get_match_data(sec_pmic->dev);
303 sec_pmic->pdata = pdata;
304
305 switch (sec_pmic->device_type) {
306 case S2MPA01:
307 regmap = &s2mpa01_regmap_config;
308 break;
309 case S2MPS11X:
310 regmap = &s2mps11_regmap_config;
311 break;
312 case S2MPS13X:
313 regmap = &s2mps13_regmap_config;
314 break;
315 case S2MPS14X:
316 regmap = &s2mps14_regmap_config;
317 break;
318 case S2MPS15X:
319 regmap = &s2mps15_regmap_config;
320 break;
321 case S5M8767X:
322 regmap = &s5m8767_regmap_config;
323 break;
324 case S2MPU02:
325 regmap = &s2mpu02_regmap_config;
326 break;
327 default:
328 regmap = &sec_regmap_config;
329 break;
330 }
331
332 sec_pmic->regmap_pmic = devm_regmap_init_i2c(i2c, regmap);
333 if (IS_ERR(sec_pmic->regmap_pmic)) {
334 ret = PTR_ERR(sec_pmic->regmap_pmic);
335 dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
336 ret);
337 return ret;
338 }
339
340 sec_irq_init(sec_pmic);
341
342 pm_runtime_set_active(sec_pmic->dev);
343
344 switch (sec_pmic->device_type) {
345 case S5M8767X:
346 sec_devs = s5m8767_devs;
347 num_sec_devs = ARRAY_SIZE(s5m8767_devs);
348 break;
349 case S2DOS05:
350 sec_devs = s2dos05_devs;
351 num_sec_devs = ARRAY_SIZE(s2dos05_devs);
352 break;
353 case S2MPA01:
354 sec_devs = s2mpa01_devs;
355 num_sec_devs = ARRAY_SIZE(s2mpa01_devs);
356 break;
357 case S2MPS11X:
358 sec_devs = s2mps11_devs;
359 num_sec_devs = ARRAY_SIZE(s2mps11_devs);
360 break;
361 case S2MPS13X:
362 sec_devs = s2mps13_devs;
363 num_sec_devs = ARRAY_SIZE(s2mps13_devs);
364 break;
365 case S2MPS14X:
366 sec_devs = s2mps14_devs;
367 num_sec_devs = ARRAY_SIZE(s2mps14_devs);
368 break;
369 case S2MPS15X:
370 sec_devs = s2mps15_devs;
371 num_sec_devs = ARRAY_SIZE(s2mps15_devs);
372 break;
373 case S2MPU02:
374 sec_devs = s2mpu02_devs;
375 num_sec_devs = ARRAY_SIZE(s2mpu02_devs);
376 break;
377 default:
378 dev_err(&i2c->dev, "Unsupported device type (%lu)\n",
379 sec_pmic->device_type);
380 return -ENODEV;
381 }
382 ret = devm_mfd_add_devices(sec_pmic->dev, -1, sec_devs, num_sec_devs,
383 NULL, 0, NULL);
384 if (ret)
385 return ret;
386
387 sec_pmic_configure(sec_pmic);
388 sec_pmic_dump_rev(sec_pmic);
389
390 return ret;
391}
392
393static void sec_pmic_shutdown(struct i2c_client *i2c)
394{
395 struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c);
396 unsigned int reg, mask;
397
398 if (!sec_pmic->pdata->manual_poweroff)
399 return;
400
401 switch (sec_pmic->device_type) {
402 case S2MPS11X:
403 reg = S2MPS11_REG_CTRL1;
404 mask = S2MPS11_CTRL1_PWRHOLD_MASK;
405 break;
406 default:
407 /*
408 * Currently only one board with S2MPS11 needs this, so just
409 * ignore the rest.
410 */
411 dev_warn(sec_pmic->dev,
412 "Unsupported device %lu for manual power off\n",
413 sec_pmic->device_type);
414 return;
415 }
416
417 regmap_update_bits(sec_pmic->regmap_pmic, reg, mask, 0);
418}
419
420static int sec_pmic_suspend(struct device *dev)
421{
422 struct i2c_client *i2c = to_i2c_client(dev);
423 struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c);
424
425 if (device_may_wakeup(dev))
426 enable_irq_wake(sec_pmic->irq);
427 /*
428 * PMIC IRQ must be disabled during suspend for RTC alarm
429 * to work properly.
430 * When device is woken up from suspend, an
431 * interrupt occurs before resuming I2C bus controller.
432 * The interrupt is handled by regmap_irq_thread which tries
433 * to read RTC registers. This read fails (I2C is still
434 * suspended) and RTC Alarm interrupt is disabled.
435 */
436 disable_irq(sec_pmic->irq);
437
438 return 0;
439}
440
441static int sec_pmic_resume(struct device *dev)
442{
443 struct i2c_client *i2c = to_i2c_client(dev);
444 struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c);
445
446 if (device_may_wakeup(dev))
447 disable_irq_wake(sec_pmic->irq);
448 enable_irq(sec_pmic->irq);
449
450 return 0;
451}
452
453static DEFINE_SIMPLE_DEV_PM_OPS(sec_pmic_pm_ops,
454 sec_pmic_suspend, sec_pmic_resume);
455
456static struct i2c_driver sec_pmic_driver = {
457 .driver = {
458 .name = "sec_pmic",
459 .pm = pm_sleep_ptr(&sec_pmic_pm_ops),
460 .of_match_table = sec_dt_match,
461 },
462 .probe = sec_pmic_probe,
463 .shutdown = sec_pmic_shutdown,
464};
465module_i2c_driver(sec_pmic_driver);
466
467MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
468MODULE_DESCRIPTION("Core support for the S5M MFD");
469MODULE_LICENSE("GPL");