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16#include <linux/module.h>
17#include <linux/moduleparam.h>
18#include <linux/init.h>
19#include <linux/err.h>
20#include <linux/slab.h>
21#include <linux/i2c.h>
22#include <linux/interrupt.h>
23#include <linux/irq.h>
24#include <linux/irqdomain.h>
25#include <linux/mfd/core.h>
26#include <linux/regmap.h>
27#include <linux/mfd/tps65910.h>
28#include <linux/of.h>
29#include <linux/of_device.h>
30
31static struct resource rtc_resources[] = {
32 {
33 .start = TPS65910_IRQ_RTC_ALARM,
34 .end = TPS65910_IRQ_RTC_ALARM,
35 .flags = IORESOURCE_IRQ,
36 }
37};
38
39static const struct mfd_cell tps65910s[] = {
40 {
41 .name = "tps65910-gpio",
42 },
43 {
44 .name = "tps65910-pmic",
45 },
46 {
47 .name = "tps65910-rtc",
48 .num_resources = ARRAY_SIZE(rtc_resources),
49 .resources = &rtc_resources[0],
50 },
51 {
52 .name = "tps65910-power",
53 },
54};
55
56
57static const struct regmap_irq tps65911_irqs[] = {
58
59 [TPS65911_IRQ_PWRHOLD_F] = {
60 .mask = INT_MSK_PWRHOLD_F_IT_MSK_MASK,
61 .reg_offset = 0,
62 },
63 [TPS65911_IRQ_VBAT_VMHI] = {
64 .mask = INT_MSK_VMBHI_IT_MSK_MASK,
65 .reg_offset = 0,
66 },
67 [TPS65911_IRQ_PWRON] = {
68 .mask = INT_MSK_PWRON_IT_MSK_MASK,
69 .reg_offset = 0,
70 },
71 [TPS65911_IRQ_PWRON_LP] = {
72 .mask = INT_MSK_PWRON_LP_IT_MSK_MASK,
73 .reg_offset = 0,
74 },
75 [TPS65911_IRQ_PWRHOLD_R] = {
76 .mask = INT_MSK_PWRHOLD_R_IT_MSK_MASK,
77 .reg_offset = 0,
78 },
79 [TPS65911_IRQ_HOTDIE] = {
80 .mask = INT_MSK_HOTDIE_IT_MSK_MASK,
81 .reg_offset = 0,
82 },
83 [TPS65911_IRQ_RTC_ALARM] = {
84 .mask = INT_MSK_RTC_ALARM_IT_MSK_MASK,
85 .reg_offset = 0,
86 },
87 [TPS65911_IRQ_RTC_PERIOD] = {
88 .mask = INT_MSK_RTC_PERIOD_IT_MSK_MASK,
89 .reg_offset = 0,
90 },
91
92
93 [TPS65911_IRQ_GPIO0_R] = {
94 .mask = INT_MSK2_GPIO0_R_IT_MSK_MASK,
95 .reg_offset = 1,
96 },
97 [TPS65911_IRQ_GPIO0_F] = {
98 .mask = INT_MSK2_GPIO0_F_IT_MSK_MASK,
99 .reg_offset = 1,
100 },
101 [TPS65911_IRQ_GPIO1_R] = {
102 .mask = INT_MSK2_GPIO1_R_IT_MSK_MASK,
103 .reg_offset = 1,
104 },
105 [TPS65911_IRQ_GPIO1_F] = {
106 .mask = INT_MSK2_GPIO1_F_IT_MSK_MASK,
107 .reg_offset = 1,
108 },
109 [TPS65911_IRQ_GPIO2_R] = {
110 .mask = INT_MSK2_GPIO2_R_IT_MSK_MASK,
111 .reg_offset = 1,
112 },
113 [TPS65911_IRQ_GPIO2_F] = {
114 .mask = INT_MSK2_GPIO2_F_IT_MSK_MASK,
115 .reg_offset = 1,
116 },
117 [TPS65911_IRQ_GPIO3_R] = {
118 .mask = INT_MSK2_GPIO3_R_IT_MSK_MASK,
119 .reg_offset = 1,
120 },
121 [TPS65911_IRQ_GPIO3_F] = {
122 .mask = INT_MSK2_GPIO3_F_IT_MSK_MASK,
123 .reg_offset = 1,
124 },
125
126
127 [TPS65911_IRQ_GPIO4_R] = {
128 .mask = INT_MSK3_GPIO4_R_IT_MSK_MASK,
129 .reg_offset = 2,
130 },
131 [TPS65911_IRQ_GPIO4_F] = {
132 .mask = INT_MSK3_GPIO4_F_IT_MSK_MASK,
133 .reg_offset = 2,
134 },
135 [TPS65911_IRQ_GPIO5_R] = {
136 .mask = INT_MSK3_GPIO5_R_IT_MSK_MASK,
137 .reg_offset = 2,
138 },
139 [TPS65911_IRQ_GPIO5_F] = {
140 .mask = INT_MSK3_GPIO5_F_IT_MSK_MASK,
141 .reg_offset = 2,
142 },
143 [TPS65911_IRQ_WTCHDG] = {
144 .mask = INT_MSK3_WTCHDG_IT_MSK_MASK,
145 .reg_offset = 2,
146 },
147 [TPS65911_IRQ_VMBCH2_H] = {
148 .mask = INT_MSK3_VMBCH2_H_IT_MSK_MASK,
149 .reg_offset = 2,
150 },
151 [TPS65911_IRQ_VMBCH2_L] = {
152 .mask = INT_MSK3_VMBCH2_L_IT_MSK_MASK,
153 .reg_offset = 2,
154 },
155 [TPS65911_IRQ_PWRDN] = {
156 .mask = INT_MSK3_PWRDN_IT_MSK_MASK,
157 .reg_offset = 2,
158 },
159};
160
161static const struct regmap_irq tps65910_irqs[] = {
162
163 [TPS65910_IRQ_VBAT_VMBDCH] = {
164 .mask = TPS65910_INT_MSK_VMBDCH_IT_MSK_MASK,
165 .reg_offset = 0,
166 },
167 [TPS65910_IRQ_VBAT_VMHI] = {
168 .mask = TPS65910_INT_MSK_VMBHI_IT_MSK_MASK,
169 .reg_offset = 0,
170 },
171 [TPS65910_IRQ_PWRON] = {
172 .mask = TPS65910_INT_MSK_PWRON_IT_MSK_MASK,
173 .reg_offset = 0,
174 },
175 [TPS65910_IRQ_PWRON_LP] = {
176 .mask = TPS65910_INT_MSK_PWRON_LP_IT_MSK_MASK,
177 .reg_offset = 0,
178 },
179 [TPS65910_IRQ_PWRHOLD] = {
180 .mask = TPS65910_INT_MSK_PWRHOLD_IT_MSK_MASK,
181 .reg_offset = 0,
182 },
183 [TPS65910_IRQ_HOTDIE] = {
184 .mask = TPS65910_INT_MSK_HOTDIE_IT_MSK_MASK,
185 .reg_offset = 0,
186 },
187 [TPS65910_IRQ_RTC_ALARM] = {
188 .mask = TPS65910_INT_MSK_RTC_ALARM_IT_MSK_MASK,
189 .reg_offset = 0,
190 },
191 [TPS65910_IRQ_RTC_PERIOD] = {
192 .mask = TPS65910_INT_MSK_RTC_PERIOD_IT_MSK_MASK,
193 .reg_offset = 0,
194 },
195
196
197 [TPS65910_IRQ_GPIO_R] = {
198 .mask = TPS65910_INT_MSK2_GPIO0_F_IT_MSK_MASK,
199 .reg_offset = 1,
200 },
201 [TPS65910_IRQ_GPIO_F] = {
202 .mask = TPS65910_INT_MSK2_GPIO0_R_IT_MSK_MASK,
203 .reg_offset = 1,
204 },
205};
206
207static struct regmap_irq_chip tps65911_irq_chip = {
208 .name = "tps65910",
209 .irqs = tps65911_irqs,
210 .num_irqs = ARRAY_SIZE(tps65911_irqs),
211 .num_regs = 3,
212 .irq_reg_stride = 2,
213 .status_base = TPS65910_INT_STS,
214 .mask_base = TPS65910_INT_MSK,
215 .ack_base = TPS65910_INT_STS,
216};
217
218static struct regmap_irq_chip tps65910_irq_chip = {
219 .name = "tps65910",
220 .irqs = tps65910_irqs,
221 .num_irqs = ARRAY_SIZE(tps65910_irqs),
222 .num_regs = 2,
223 .irq_reg_stride = 2,
224 .status_base = TPS65910_INT_STS,
225 .mask_base = TPS65910_INT_MSK,
226 .ack_base = TPS65910_INT_STS,
227};
228
229static int tps65910_irq_init(struct tps65910 *tps65910, int irq,
230 struct tps65910_platform_data *pdata)
231{
232 int ret = 0;
233 static struct regmap_irq_chip *tps6591x_irqs_chip;
234
235 if (!irq) {
236 dev_warn(tps65910->dev, "No interrupt support, no core IRQ\n");
237 return -EINVAL;
238 }
239
240 if (!pdata) {
241 dev_warn(tps65910->dev, "No interrupt support, no pdata\n");
242 return -EINVAL;
243 }
244
245 switch (tps65910_chip_id(tps65910)) {
246 case TPS65910:
247 tps6591x_irqs_chip = &tps65910_irq_chip;
248 break;
249 case TPS65911:
250 tps6591x_irqs_chip = &tps65911_irq_chip;
251 break;
252 }
253
254 tps65910->chip_irq = irq;
255 ret = devm_regmap_add_irq_chip(tps65910->dev, tps65910->regmap,
256 tps65910->chip_irq,
257 IRQF_ONESHOT, pdata->irq_base,
258 tps6591x_irqs_chip, &tps65910->irq_data);
259 if (ret < 0) {
260 dev_warn(tps65910->dev, "Failed to add irq_chip %d\n", ret);
261 tps65910->chip_irq = 0;
262 }
263 return ret;
264}
265
266static bool is_volatile_reg(struct device *dev, unsigned int reg)
267{
268 struct tps65910 *tps65910 = dev_get_drvdata(dev);
269
270
271
272
273
274
275 if ((reg >= TPS65910_VIO) && (reg <= TPS65910_VDAC)) {
276
277 if (tps65910_chip_id(tps65910) == TPS65910)
278 if ((reg == TPS65911_VDDCTRL_OP) ||
279 (reg == TPS65911_VDDCTRL_SR))
280 return true;
281 return false;
282 }
283 return true;
284}
285
286static const struct regmap_config tps65910_regmap_config = {
287 .reg_bits = 8,
288 .val_bits = 8,
289 .volatile_reg = is_volatile_reg,
290 .max_register = TPS65910_MAX_REGISTER - 1,
291 .cache_type = REGCACHE_RBTREE,
292};
293
294static int tps65910_ck32k_init(struct tps65910 *tps65910,
295 struct tps65910_board *pmic_pdata)
296{
297 int ret;
298
299 if (!pmic_pdata->en_ck32k_xtal)
300 return 0;
301
302 ret = tps65910_reg_clear_bits(tps65910, TPS65910_DEVCTRL,
303 DEVCTRL_CK32K_CTRL_MASK);
304 if (ret < 0) {
305 dev_err(tps65910->dev, "clear ck32k_ctrl failed: %d\n", ret);
306 return ret;
307 }
308
309 return 0;
310}
311
312static int tps65910_sleepinit(struct tps65910 *tps65910,
313 struct tps65910_board *pmic_pdata)
314{
315 struct device *dev = NULL;
316 int ret = 0;
317
318 dev = tps65910->dev;
319
320 if (!pmic_pdata->en_dev_slp)
321 return 0;
322
323
324 ret = tps65910_reg_set_bits(tps65910, TPS65910_DEVCTRL,
325 DEVCTRL_DEV_SLP_MASK);
326 if (ret < 0) {
327 dev_err(dev, "set dev_slp failed: %d\n", ret);
328 goto err_sleep_init;
329 }
330
331
332 if (!pmic_pdata->slp_keepon)
333 return 0;
334
335 if (pmic_pdata->slp_keepon->therm_keepon) {
336 ret = tps65910_reg_set_bits(tps65910,
337 TPS65910_SLEEP_KEEP_RES_ON,
338 SLEEP_KEEP_RES_ON_THERM_KEEPON_MASK);
339 if (ret < 0) {
340 dev_err(dev, "set therm_keepon failed: %d\n", ret);
341 goto disable_dev_slp;
342 }
343 }
344
345 if (pmic_pdata->slp_keepon->clkout32k_keepon) {
346 ret = tps65910_reg_set_bits(tps65910,
347 TPS65910_SLEEP_KEEP_RES_ON,
348 SLEEP_KEEP_RES_ON_CLKOUT32K_KEEPON_MASK);
349 if (ret < 0) {
350 dev_err(dev, "set clkout32k_keepon failed: %d\n", ret);
351 goto disable_dev_slp;
352 }
353 }
354
355 if (pmic_pdata->slp_keepon->i2chs_keepon) {
356 ret = tps65910_reg_set_bits(tps65910,
357 TPS65910_SLEEP_KEEP_RES_ON,
358 SLEEP_KEEP_RES_ON_I2CHS_KEEPON_MASK);
359 if (ret < 0) {
360 dev_err(dev, "set i2chs_keepon failed: %d\n", ret);
361 goto disable_dev_slp;
362 }
363 }
364
365 return 0;
366
367disable_dev_slp:
368 tps65910_reg_clear_bits(tps65910, TPS65910_DEVCTRL,
369 DEVCTRL_DEV_SLP_MASK);
370
371err_sleep_init:
372 return ret;
373}
374
375#ifdef CONFIG_OF
376static const struct of_device_id tps65910_of_match[] = {
377 { .compatible = "ti,tps65910", .data = (void *)TPS65910},
378 { .compatible = "ti,tps65911", .data = (void *)TPS65911},
379 { },
380};
381MODULE_DEVICE_TABLE(of, tps65910_of_match);
382
383static struct tps65910_board *tps65910_parse_dt(struct i2c_client *client,
384 unsigned long *chip_id)
385{
386 struct device_node *np = client->dev.of_node;
387 struct tps65910_board *board_info;
388 unsigned int prop;
389 const struct of_device_id *match;
390 int ret = 0;
391
392 match = of_match_device(tps65910_of_match, &client->dev);
393 if (!match) {
394 dev_err(&client->dev, "Failed to find matching dt id\n");
395 return NULL;
396 }
397
398 *chip_id = (unsigned long)match->data;
399
400 board_info = devm_kzalloc(&client->dev, sizeof(*board_info),
401 GFP_KERNEL);
402 if (!board_info) {
403 dev_err(&client->dev, "Failed to allocate pdata\n");
404 return NULL;
405 }
406
407 ret = of_property_read_u32(np, "ti,vmbch-threshold", &prop);
408 if (!ret)
409 board_info->vmbch_threshold = prop;
410
411 ret = of_property_read_u32(np, "ti,vmbch2-threshold", &prop);
412 if (!ret)
413 board_info->vmbch2_threshold = prop;
414
415 prop = of_property_read_bool(np, "ti,en-ck32k-xtal");
416 board_info->en_ck32k_xtal = prop;
417
418 board_info->irq = client->irq;
419 board_info->irq_base = -1;
420 board_info->pm_off = of_property_read_bool(np,
421 "ti,system-power-controller");
422
423 return board_info;
424}
425#else
426static inline
427struct tps65910_board *tps65910_parse_dt(struct i2c_client *client,
428 unsigned long *chip_id)
429{
430 return NULL;
431}
432#endif
433
434static struct i2c_client *tps65910_i2c_client;
435static void tps65910_power_off(void)
436{
437 struct tps65910 *tps65910;
438
439 tps65910 = dev_get_drvdata(&tps65910_i2c_client->dev);
440
441 if (tps65910_reg_set_bits(tps65910, TPS65910_DEVCTRL,
442 DEVCTRL_PWR_OFF_MASK) < 0)
443 return;
444
445 tps65910_reg_clear_bits(tps65910, TPS65910_DEVCTRL,
446 DEVCTRL_DEV_ON_MASK);
447}
448
449static int tps65910_i2c_probe(struct i2c_client *i2c,
450 const struct i2c_device_id *id)
451{
452 struct tps65910 *tps65910;
453 struct tps65910_board *pmic_plat_data;
454 struct tps65910_board *of_pmic_plat_data = NULL;
455 struct tps65910_platform_data *init_data;
456 unsigned long chip_id = id->driver_data;
457 int ret = 0;
458
459 pmic_plat_data = dev_get_platdata(&i2c->dev);
460
461 if (!pmic_plat_data && i2c->dev.of_node) {
462 pmic_plat_data = tps65910_parse_dt(i2c, &chip_id);
463 of_pmic_plat_data = pmic_plat_data;
464 }
465
466 if (!pmic_plat_data)
467 return -EINVAL;
468
469 init_data = devm_kzalloc(&i2c->dev, sizeof(*init_data), GFP_KERNEL);
470 if (init_data == NULL)
471 return -ENOMEM;
472
473 tps65910 = devm_kzalloc(&i2c->dev, sizeof(*tps65910), GFP_KERNEL);
474 if (tps65910 == NULL)
475 return -ENOMEM;
476
477 tps65910->of_plat_data = of_pmic_plat_data;
478 i2c_set_clientdata(i2c, tps65910);
479 tps65910->dev = &i2c->dev;
480 tps65910->i2c_client = i2c;
481 tps65910->id = chip_id;
482
483
484
485
486
487 i2c_master_send(i2c, "", 1);
488 tps65910->regmap = devm_regmap_init_i2c(i2c, &tps65910_regmap_config);
489 if (IS_ERR(tps65910->regmap)) {
490 ret = PTR_ERR(tps65910->regmap);
491 dev_err(&i2c->dev, "regmap initialization failed: %d\n", ret);
492 return ret;
493 }
494
495 init_data->irq = pmic_plat_data->irq;
496 init_data->irq_base = pmic_plat_data->irq_base;
497
498 tps65910_irq_init(tps65910, init_data->irq, init_data);
499 tps65910_ck32k_init(tps65910, pmic_plat_data);
500 tps65910_sleepinit(tps65910, pmic_plat_data);
501
502 if (pmic_plat_data->pm_off && !pm_power_off) {
503 tps65910_i2c_client = i2c;
504 pm_power_off = tps65910_power_off;
505 }
506
507 ret = devm_mfd_add_devices(tps65910->dev, -1,
508 tps65910s, ARRAY_SIZE(tps65910s),
509 NULL, 0,
510 regmap_irq_get_domain(tps65910->irq_data));
511 if (ret < 0) {
512 dev_err(&i2c->dev, "mfd_add_devices failed: %d\n", ret);
513 return ret;
514 }
515
516 return ret;
517}
518
519static const struct i2c_device_id tps65910_i2c_id[] = {
520 { "tps65910", TPS65910 },
521 { "tps65911", TPS65911 },
522 { }
523};
524MODULE_DEVICE_TABLE(i2c, tps65910_i2c_id);
525
526
527static struct i2c_driver tps65910_i2c_driver = {
528 .driver = {
529 .name = "tps65910",
530 .of_match_table = of_match_ptr(tps65910_of_match),
531 },
532 .probe = tps65910_i2c_probe,
533 .id_table = tps65910_i2c_id,
534};
535
536static int __init tps65910_i2c_init(void)
537{
538 return i2c_add_driver(&tps65910_i2c_driver);
539}
540
541subsys_initcall(tps65910_i2c_init);
542
543static void __exit tps65910_i2c_exit(void)
544{
545 i2c_del_driver(&tps65910_i2c_driver);
546}
547module_exit(tps65910_i2c_exit);
548
549MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>");
550MODULE_AUTHOR("Jorge Eduardo Candelaria <jedu@slimlogic.co.uk>");
551MODULE_DESCRIPTION("TPS6591x chip family multi-function driver");
552MODULE_LICENSE("GPL");
553
