1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * MFD core driver for Rockchip RK808/RK818
4 *
5 * Copyright (c) 2014-2018, Fuzhou Rockchip Electronics Co., Ltd
6 *
7 * Author: Chris Zhong <zyw@rock-chips.com>
8 * Author: Zhang Qing <zhangqing@rock-chips.com>
9 *
10 * Copyright (C) 2016 PHYTEC Messtechnik GmbH
11 *
12 * Author: Wadim Egorov <w.egorov@phytec.de>
13 */
14
15 #include <linux/i2c.h>
16 #include <linux/interrupt.h>
17 #include <linux/mfd/rk808.h>
18 #include <linux/mfd/core.h>
19 #include <linux/module.h>
20 #include <linux/of_device.h>
21 #include <linux/reboot.h>
22 #include <linux/regmap.h>
23 #include <linux/syscore_ops.h>
24 #include <linux/pinctrl/consumer.h>
25 #include <linux/pinctrl/devinfo.h>
26
27 struct rk808_reg_data {
28 int addr;
29 int mask;
30 int value;
31 };
32
rk808_is_volatile_reg(struct device *dev, unsigned int reg)33 static bool rk808_is_volatile_reg(struct device *dev, unsigned int reg)
34 {
35 /*
36 * Notes:
37 * - Technically the ROUND_30s bit makes RTC_CTRL_REG volatile, but
38 * we don't use that feature. It's better to cache.
39 * - It's unlikely we care that RK808_DEVCTRL_REG is volatile since
40 * bits are cleared in case when we shutoff anyway, but better safe.
41 */
42
43 switch (reg) {
44 case RK808_SECONDS_REG ... RK808_WEEKS_REG:
45 case RK808_RTC_STATUS_REG:
46 case RK808_VB_MON_REG:
47 case RK808_THERMAL_REG:
48 case RK808_DCDC_UV_STS_REG:
49 case RK808_LDO_UV_STS_REG:
50 case RK808_DCDC_PG_REG:
51 case RK808_LDO_PG_REG:
52 case RK808_DEVCTRL_REG:
53 case RK808_INT_STS_REG1:
54 case RK808_INT_STS_REG2:
55 return true;
56 default:
57 break;
58 }
59
60 return false;
61 }
62
rk817_is_volatile_reg(struct device *dev, unsigned int reg)63 static bool rk817_is_volatile_reg(struct device *dev, unsigned int reg)
64 {
65 /*
66 * Notes:
67 * - Technically the ROUND_30s bit makes RTC_CTRL_REG volatile, but
68 * we don't use that feature. It's better to cache.
69 */
70
71 switch (reg) {
72 case RK817_SECONDS_REG ... RK817_WEEKS_REG:
73 case RK817_RTC_STATUS_REG:
74 case RK817_ADC_CONFIG0 ... RK817_CURE_ADC_K0:
75 case RK817_CHRG_STS:
76 case RK817_CHRG_OUT:
77 case RK817_CHRG_IN:
78 case RK817_SYS_STS:
79 case RK817_INT_STS_REG0:
80 case RK817_INT_STS_REG1:
81 case RK817_INT_STS_REG2:
82 return true;
83 default:
84 break;
85 }
86
87 return false;
88 }
89
rk818_is_volatile_reg(struct device *dev, unsigned int reg)90 static bool rk818_is_volatile_reg(struct device *dev, unsigned int reg)
91 {
92 /*
93 * Notes:
94 * - Technically the ROUND_30s bit makes RTC_CTRL_REG volatile, but
95 * we don't use that feature. It's better to cache.
96 * - It's unlikely we care that RK808_DEVCTRL_REG is volatile since
97 * bits are cleared in case when we shutoff anyway, but better safe.
98 */
99
100 switch (reg) {
101 case RK808_SECONDS_REG ... RK808_WEEKS_REG:
102 case RK808_RTC_STATUS_REG:
103 case RK808_VB_MON_REG:
104 case RK808_THERMAL_REG:
105 case RK808_DCDC_EN_REG:
106 case RK808_LDO_EN_REG:
107 case RK808_DCDC_UV_STS_REG:
108 case RK808_LDO_UV_STS_REG:
109 case RK808_DCDC_PG_REG:
110 case RK808_LDO_PG_REG:
111 case RK808_DEVCTRL_REG:
112 case RK808_INT_STS_REG1:
113 case RK808_INT_STS_REG2:
114 case RK808_INT_STS_MSK_REG1:
115 case RK808_INT_STS_MSK_REG2:
116 case RK816_INT_STS_REG1:
117 case RK816_INT_STS_MSK_REG1:
118 case RK818_SUP_STS_REG ... RK818_SAVE_DATA19:
119 return true;
120 default:
121 break;
122 }
123
124 return false;
125 }
126
127 static const struct regmap_config rk818_regmap_config = {
128 .reg_bits = RK_REG_BITS,
129 .val_bits = RK_VAL_BITS,
130 .max_register = RK818_SAVE_DATA19,
131 .cache_type = REGCACHE_RBTREE,
132 .volatile_reg = rk818_is_volatile_reg,
133 };
134
135 static const struct regmap_config rk805_regmap_config = {
136 .reg_bits = RK_REG_BITS,
137 .val_bits = RK_VAL_BITS,
138 .max_register = RK805_OFF_SOURCE_REG,
139 .cache_type = REGCACHE_RBTREE,
140 .volatile_reg = rk808_is_volatile_reg,
141 };
142
143 static const struct regmap_config rk808_regmap_config = {
144 .reg_bits = RK_REG_BITS,
145 .val_bits = RK_VAL_BITS,
146 .max_register = RK808_IO_POL_REG,
147 .cache_type = REGCACHE_RBTREE,
148 .volatile_reg = rk808_is_volatile_reg,
149 };
150
151 static const struct regmap_config rk816_regmap_config = {
152 .reg_bits = RK_REG_BITS,
153 .val_bits = RK_VAL_BITS,
154 .max_register = RK816_DATA18_REG,
155 .cache_type = REGCACHE_RBTREE,
156 .volatile_reg = rk818_is_volatile_reg,
157 };
158
159 static const struct regmap_config rk817_regmap_config = {
160 .reg_bits = RK_REG_BITS,
161 .val_bits = RK_VAL_BITS,
162 .max_register = RK817_GPIO_INT_CFG,
163 .num_reg_defaults_raw = RK817_GPIO_INT_CFG + 1,
164 .cache_type = REGCACHE_RBTREE,
165 .volatile_reg = rk817_is_volatile_reg,
166 };
167
168 static struct resource rtc_resources[] = {
169 DEFINE_RES_IRQ(RK808_IRQ_RTC_ALARM),
170 };
171
172 static struct resource rk816_rtc_resources[] = {
173 DEFINE_RES_IRQ(RK816_IRQ_RTC_ALARM),
174 };
175
176 static struct resource rk817_rtc_resources[] = {
177 DEFINE_RES_IRQ(RK817_IRQ_RTC_ALARM),
178 };
179
180 static struct resource rk805_key_resources[] = {
181 DEFINE_RES_IRQ(RK805_IRQ_PWRON_FALL),
182 DEFINE_RES_IRQ(RK805_IRQ_PWRON_RISE),
183 };
184
185 static struct resource rk816_pwrkey_resources[] = {
186 DEFINE_RES_IRQ(RK816_IRQ_PWRON_FALL),
187 DEFINE_RES_IRQ(RK816_IRQ_PWRON_RISE),
188 };
189
190 static struct resource rk817_pwrkey_resources[] = {
191 DEFINE_RES_IRQ(RK817_IRQ_PWRON_FALL),
192 DEFINE_RES_IRQ(RK817_IRQ_PWRON_RISE),
193 };
194
195 static const struct mfd_cell rk805s[] = {
196 {
197 .name = "rk808-clkout",
198 },
199 {
200 .name = "rk808-regulator",
201 },
202 {
203 .name = "rk805-pinctrl",
204 },
205 {
206 .name = "rk808-rtc",
207 .num_resources = ARRAY_SIZE(rtc_resources),
208 .resources = &rtc_resources[0],
209 },
210 {
211 .name = "rk805-pwrkey",
212 .num_resources = ARRAY_SIZE(rk805_key_resources),
213 .resources = &rk805_key_resources[0],
214 },
215 };
216
217 static const struct mfd_cell rk808s[] = {
218 {
219 .name = "rk808-clkout",
220 },
221 {
222 .name = "rk808-regulator",
223 },
224 {
225 .name = "rk808-rtc",
226 .num_resources = ARRAY_SIZE(rtc_resources),
227 .resources = rtc_resources,
228 },
229 };
230
231 static const struct mfd_cell rk816s[] = {
232 {
233 .name = "rk808-clkout",
234 },
235 {
236 .name = "rk808-regulator",
237 },
238 {
239 .name = "rk805-pinctrl",
240 },
241 {
242 .name = "rk816-battery",
243 .of_compatible = "rk816-battery",
244 },
245 {
246 .name = "rk805-pwrkey",
247 .num_resources = ARRAY_SIZE(rk816_pwrkey_resources),
248 .resources = &rk816_pwrkey_resources[0],
249 },
250 {
251 .name = "rk808-rtc",
252 .num_resources = ARRAY_SIZE(rk816_rtc_resources),
253 .resources = &rk816_rtc_resources[0],
254 },
255 };
256
257 static const struct mfd_cell rk817s[] = {
258 {
259 .name = "rk808-clkout",
260 },
261 {
262 .name = "rk808-regulator",
263 },
264 {
265 .name = "rk817-battery",
266 .of_compatible = "rk817,battery",
267 },
268 {
269 .name = "rk817-charger",
270 .of_compatible = "rk817,charger",
271 },
272 {
273 .name = "rk805-pwrkey",
274 .num_resources = ARRAY_SIZE(rk817_pwrkey_resources),
275 .resources = &rk817_pwrkey_resources[0],
276 },
277 {
278 .name = "rk808-rtc",
279 .num_resources = ARRAY_SIZE(rk817_rtc_resources),
280 .resources = &rk817_rtc_resources[0],
281 },
282 {
283 .name = "rk817-codec",
284 .of_compatible = "rockchip,rk817-codec",
285 },
286 };
287
288 static const struct mfd_cell rk818s[] = {
289 {
290 .name = "rk808-clkout",
291 },
292 {
293 .name = "rk808-regulator",
294 },
295 {
296 .name = "rk818-battery",
297 .of_compatible = "rk818-battery",
298 },
299 {
300 .name = "rk818-charger",
301 },
302 {
303 .name = "rk808-rtc",
304 .num_resources = ARRAY_SIZE(rtc_resources),
305 .resources = rtc_resources,
306 },
307 };
308
309 static const struct rk808_reg_data rk805_pre_init_reg[] = {
310 {RK805_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_400MA},
311 {RK805_GPIO_IO_POL_REG, SLP_SD_MSK, SLEEP_FUN},
312 {RK805_THERMAL_REG, TEMP_HOTDIE_MSK, TEMP115C},
313 {RK808_RTC_CTRL_REG, RTC_STOP, RTC_STOP},
314 };
315
316 static struct rk808_reg_data rk805_suspend_reg[] = {
317 {RK805_BUCK3_CONFIG_REG, PWM_MODE_MSK, AUTO_PWM_MODE},
318 };
319
320 static struct rk808_reg_data rk805_resume_reg[] = {
321 {RK805_BUCK3_CONFIG_REG, PWM_MODE_MSK, FPWM_MODE},
322 };
323
324 static const struct rk808_reg_data rk808_pre_init_reg[] = {
325 {RK808_BUCK3_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_150MA},
326 {RK808_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_200MA},
327 {RK808_BOOST_CONFIG_REG, BOOST_ILMIN_MASK, BOOST_ILMIN_100MA},
328 {RK808_BUCK1_CONFIG_REG, BUCK1_RATE_MASK, BUCK_ILMIN_200MA},
329 {RK808_BUCK2_CONFIG_REG, BUCK2_RATE_MASK, BUCK_ILMIN_200MA},
330 {RK808_DCDC_UV_ACT_REG, BUCK_UV_ACT_MASK, BUCK_UV_ACT_DISABLE},
331 {RK808_RTC_CTRL_REG, RTC_STOP, RTC_STOP},
332 {RK808_VB_MON_REG, MASK_ALL, VB_LO_ACT | VB_LO_SEL_3500MV},
333 };
334
335 static const struct rk808_reg_data rk816_pre_init_reg[] = {
336 /* buck4 Max ILMIT */
337 {RK816_BUCK4_CONFIG_REG, REG_WRITE_MSK, BUCK4_MAX_ILIMIT},
338 /* hotdie temperature: 105c */
339 {RK816_THERMAL_REG, REG_WRITE_MSK, TEMP105C},
340 /* set buck 12.5mv/us */
341 {RK816_BUCK1_CONFIG_REG, BUCK_RATE_MSK, BUCK_RATE_12_5MV_US},
342 {RK816_BUCK2_CONFIG_REG, BUCK_RATE_MSK, BUCK_RATE_12_5MV_US},
343 /* enable RTC_PERIOD & RTC_ALARM int */
344 {RK816_INT_STS_MSK_REG2, REG_WRITE_MSK, RTC_PERIOD_ALARM_INT_EN},
345 /* set bat 3.0 low and act shutdown */
346 {RK816_VB_MON_REG, VBAT_LOW_VOL_MASK | VBAT_LOW_ACT_MASK, RK816_VBAT_LOW_3V0 | EN_VABT_LOW_SHUT_DOWN},
347 /* enable PWRON rising/faling int */
348 {RK816_INT_STS_MSK_REG1, REG_WRITE_MSK, RK816_PWRON_FALL_RISE_INT_EN},
349 /* enable PLUG IN/OUT int */
350 {RK816_INT_STS_MSK_REG3, REG_WRITE_MSK, PLUGIN_OUT_INT_EN},
351 /* clear int flags */
352 {RK816_INT_STS_REG1, REG_WRITE_MSK, ALL_INT_FLAGS_ST},
353 {RK816_INT_STS_REG2, REG_WRITE_MSK, ALL_INT_FLAGS_ST},
354 {RK816_INT_STS_REG3, REG_WRITE_MSK, ALL_INT_FLAGS_ST},
355 {RK816_DCDC_EN_REG2, BOOST_EN_MASK, BOOST_DISABLE},
356 /* set write mask bit 1, otherwise 'is_enabled()' get wrong status */
357 {RK816_LDO_EN_REG1, REGS_WMSK, REGS_WMSK},
358 {RK816_LDO_EN_REG2, REGS_WMSK, REGS_WMSK},
359 };
360
361 static const struct rk808_reg_data rk817_pre_init_reg[] = {
362 {RK817_SYS_CFG(3), RK817_SLPPOL_MSK, RK817_SLPPOL_L},
363 {RK817_RTC_CTRL_REG, RTC_STOP, RTC_STOP},
364 {RK817_GPIO_INT_CFG, RK817_INT_POL_MSK, RK817_INT_POL_L},
365 {RK817_SYS_CFG(1), RK817_HOTDIE_TEMP_MSK | RK817_TSD_TEMP_MSK, RK817_HOTDIE_105 | RK817_TSD_140},
366 };
367
368 static const struct rk808_reg_data rk818_pre_init_reg[] = {
369 /* improve efficiency */
370 {RK818_BUCK2_CONFIG_REG, BUCK2_RATE_MASK, BUCK_ILMIN_250MA},
371 {RK818_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_250MA},
372 {RK818_BOOST_CONFIG_REG, BOOST_ILMIN_MASK, BOOST_ILMIN_100MA},
373 {RK818_USB_CTRL_REG, RK818_USB_ILIM_SEL_MASK, RK818_USB_ILMIN_2000MA},
374 /* close charger when usb lower then 3.4V */
375 {RK818_USB_CTRL_REG, RK818_USB_CHG_SD_VSEL_MASK, (0x7 << 4)},
376 /* no action when vref */
377 {RK818_H5V_EN_REG, BIT(1), RK818_REF_RDY_CTRL},
378 /* enable HDMI 5V */
379 {RK818_H5V_EN_REG, BIT(0), RK818_H5V_EN},
380 {RK808_RTC_CTRL_REG, RTC_STOP, RTC_STOP},
381 {RK808_VB_MON_REG, MASK_ALL, VB_LO_ACT | VB_LO_SEL_3500MV},
382 {RK808_CLK32OUT_REG, CLK32KOUT2_FUNC_MASK, CLK32KOUT2_FUNC},
383 };
384
385 static const struct regmap_irq rk805_irqs[] = {
386 [RK805_IRQ_PWRON_RISE] =
387 {
388 .mask = RK805_IRQ_PWRON_RISE_MSK,
389 .reg_offset = 0,
390 },
391 [RK805_IRQ_VB_LOW] =
392 {
393 .mask = RK805_IRQ_VB_LOW_MSK,
394 .reg_offset = 0,
395 },
396 [RK805_IRQ_PWRON] =
397 {
398 .mask = RK805_IRQ_PWRON_MSK,
399 .reg_offset = 0,
400 },
401 [RK805_IRQ_PWRON_LP] =
402 {
403 .mask = RK805_IRQ_PWRON_LP_MSK,
404 .reg_offset = 0,
405 },
406 [RK805_IRQ_HOTDIE] =
407 {
408 .mask = RK805_IRQ_HOTDIE_MSK,
409 .reg_offset = 0,
410 },
411 [RK805_IRQ_RTC_ALARM] =
412 {
413 .mask = RK805_IRQ_RTC_ALARM_MSK,
414 .reg_offset = 0,
415 },
416 [RK805_IRQ_RTC_PERIOD] =
417 {
418 .mask = RK805_IRQ_RTC_PERIOD_MSK,
419 .reg_offset = 0,
420 },
421 [RK805_IRQ_PWRON_FALL] =
422 {
423 .mask = RK805_IRQ_PWRON_FALL_MSK,
424 .reg_offset = 0,
425 },
426 };
427
428 static const struct regmap_irq rk808_irqs[] = {
429 /* INT_STS */
430 [RK808_IRQ_VOUT_LO] =
431 {
432 .mask = RK808_IRQ_VOUT_LO_MSK,
433 .reg_offset = 0,
434 },
435 [RK808_IRQ_VB_LO] =
436 {
437 .mask = RK808_IRQ_VB_LO_MSK,
438 .reg_offset = 0,
439 },
440 [RK808_IRQ_PWRON] =
441 {
442 .mask = RK808_IRQ_PWRON_MSK,
443 .reg_offset = 0,
444 },
445 [RK808_IRQ_PWRON_LP] =
446 {
447 .mask = RK808_IRQ_PWRON_LP_MSK,
448 .reg_offset = 0,
449 },
450 [RK808_IRQ_HOTDIE] =
451 {
452 .mask = RK808_IRQ_HOTDIE_MSK,
453 .reg_offset = 0,
454 },
455 [RK808_IRQ_RTC_ALARM] =
456 {
457 .mask = RK808_IRQ_RTC_ALARM_MSK,
458 .reg_offset = 0,
459 },
460 [RK808_IRQ_RTC_PERIOD] =
461 {
462 .mask = RK808_IRQ_RTC_PERIOD_MSK,
463 .reg_offset = 0,
464 },
465
466 /* INT_STS2 */
467 [RK808_IRQ_PLUG_IN_INT] =
468 {
469 .mask = RK808_IRQ_PLUG_IN_INT_MSK,
470 .reg_offset = 1,
471 },
472 [RK808_IRQ_PLUG_OUT_INT] =
473 {
474 .mask = RK808_IRQ_PLUG_OUT_INT_MSK,
475 .reg_offset = 1,
476 },
477 };
478
479 static struct rk808_reg_data rk816_suspend_reg[] = {
480 /* set bat 3.4v low and act irq */
481 {RK816_VB_MON_REG, VBAT_LOW_VOL_MASK | VBAT_LOW_ACT_MASK, RK816_VBAT_LOW_3V4 | EN_VBAT_LOW_IRQ},
482 };
483
484 static struct rk808_reg_data rk816_resume_reg[] = {
485 /* set bat 3.0v low and act shutdown */
486 {RK816_VB_MON_REG, VBAT_LOW_VOL_MASK | VBAT_LOW_ACT_MASK, RK816_VBAT_LOW_3V0 | EN_VABT_LOW_SHUT_DOWN},
487 };
488
489 static const struct regmap_irq rk816_irqs[] = {
490 /* INT_STS */
491 [RK816_IRQ_PWRON_FALL] =
492 {
493 .mask = RK816_IRQ_PWRON_FALL_MSK,
494 .reg_offset = 0,
495 },
496 [RK816_IRQ_PWRON_RISE] =
497 {
498 .mask = RK816_IRQ_PWRON_RISE_MSK,
499 .reg_offset = 0,
500 },
501 [RK816_IRQ_VB_LOW] =
502 {
503 .mask = RK816_IRQ_VB_LOW_MSK,
504 .reg_offset = 1,
505 },
506 [RK816_IRQ_PWRON] =
507 {
508 .mask = RK816_IRQ_PWRON_MSK,
509 .reg_offset = 1,
510 },
511 [RK816_IRQ_PWRON_LP] =
512 {
513 .mask = RK816_IRQ_PWRON_LP_MSK,
514 .reg_offset = 1,
515 },
516 [RK816_IRQ_HOTDIE] =
517 {
518 .mask = RK816_IRQ_HOTDIE_MSK,
519 .reg_offset = 1,
520 },
521 [RK816_IRQ_RTC_ALARM] =
522 {
523 .mask = RK816_IRQ_RTC_ALARM_MSK,
524 .reg_offset = 1,
525 },
526 [RK816_IRQ_RTC_PERIOD] =
527 {
528 .mask = RK816_IRQ_RTC_PERIOD_MSK,
529 .reg_offset = 1,
530 },
531 [RK816_IRQ_USB_OV] =
532 {
533 .mask = RK816_IRQ_USB_OV_MSK,
534 .reg_offset = 1,
535 },
536 };
537
538 static struct rk808_reg_data rk818_suspend_reg[] = {
539 /* set bat 3.4v low and act irq */
540 {RK808_VB_MON_REG, VBAT_LOW_VOL_MASK | VBAT_LOW_ACT_MASK, RK808_VBAT_LOW_3V4 | EN_VBAT_LOW_IRQ},
541 };
542
543 static struct rk808_reg_data rk818_resume_reg[] = {
544 /* set bat 3.0v low and act shutdown */
545 {RK808_VB_MON_REG, VBAT_LOW_VOL_MASK | VBAT_LOW_ACT_MASK, RK808_VBAT_LOW_3V0 | EN_VABT_LOW_SHUT_DOWN},
546 };
547
548 static const struct regmap_irq rk818_irqs[] = {
549 /* INT_STS */
550 [RK818_IRQ_VOUT_LO] =
551 {
552 .mask = RK818_IRQ_VOUT_LO_MSK,
553 .reg_offset = 0,
554 },
555 [RK818_IRQ_VB_LO] =
556 {
557 .mask = RK818_IRQ_VB_LO_MSK,
558 .reg_offset = 0,
559 },
560 [RK818_IRQ_PWRON] =
561 {
562 .mask = RK818_IRQ_PWRON_MSK,
563 .reg_offset = 0,
564 },
565 [RK818_IRQ_PWRON_LP] =
566 {
567 .mask = RK818_IRQ_PWRON_LP_MSK,
568 .reg_offset = 0,
569 },
570 [RK818_IRQ_HOTDIE] =
571 {
572 .mask = RK818_IRQ_HOTDIE_MSK,
573 .reg_offset = 0,
574 },
575 [RK818_IRQ_RTC_ALARM] =
576 {
577 .mask = RK818_IRQ_RTC_ALARM_MSK,
578 .reg_offset = 0,
579 },
580 [RK818_IRQ_RTC_PERIOD] =
581 {
582 .mask = RK818_IRQ_RTC_PERIOD_MSK,
583 .reg_offset = 0,
584 },
585 [RK818_IRQ_USB_OV] =
586 {
587 .mask = RK818_IRQ_USB_OV_MSK,
588 .reg_offset = 0,
589 },
590
591 /* INT_STS2 */
592 [RK818_IRQ_PLUG_IN] =
593 {
594 .mask = RK818_IRQ_PLUG_IN_MSK,
595 .reg_offset = 1,
596 },
597 [RK818_IRQ_PLUG_OUT] =
598 {
599 .mask = RK818_IRQ_PLUG_OUT_MSK,
600 .reg_offset = 1,
601 },
602 [RK818_IRQ_CHG_OK] =
603 {
604 .mask = RK818_IRQ_CHG_OK_MSK,
605 .reg_offset = 1,
606 },
607 [RK818_IRQ_CHG_TE] =
608 {
609 .mask = RK818_IRQ_CHG_TE_MSK,
610 .reg_offset = 1,
611 },
612 [RK818_IRQ_CHG_TS1] =
613 {
614 .mask = RK818_IRQ_CHG_TS1_MSK,
615 .reg_offset = 1,
616 },
617 [RK818_IRQ_TS2] =
618 {
619 .mask = RK818_IRQ_TS2_MSK,
620 .reg_offset = 1,
621 },
622 [RK818_IRQ_CHG_CVTLIM] =
623 {
624 .mask = RK818_IRQ_CHG_CVTLIM_MSK,
625 .reg_offset = 1,
626 },
627 [RK818_IRQ_DISCHG_ILIM] =
628 {
629 .mask = RK818_IRQ_DISCHG_ILIM_MSK,
630 .reg_offset = 1,
631 },
632 };
633
634 static const struct regmap_irq rk817_irqs[RK817_IRQ_END] = {
635 REGMAP_IRQ_REG_LINE(0, 8), REGMAP_IRQ_REG_LINE(1, 8), REGMAP_IRQ_REG_LINE(2, 8), REGMAP_IRQ_REG_LINE(3, 8),
636 REGMAP_IRQ_REG_LINE(4, 8), REGMAP_IRQ_REG_LINE(5, 8), REGMAP_IRQ_REG_LINE(6, 8), REGMAP_IRQ_REG_LINE(7, 8),
637 REGMAP_IRQ_REG_LINE(8, 8), REGMAP_IRQ_REG_LINE(9, 8), REGMAP_IRQ_REG_LINE(10, 8), REGMAP_IRQ_REG_LINE(11, 8),
638 REGMAP_IRQ_REG_LINE(12, 8), REGMAP_IRQ_REG_LINE(13, 8), REGMAP_IRQ_REG_LINE(14, 8), REGMAP_IRQ_REG_LINE(15, 8),
639 REGMAP_IRQ_REG_LINE(16, 8), REGMAP_IRQ_REG_LINE(17, 8), REGMAP_IRQ_REG_LINE(18, 8), REGMAP_IRQ_REG_LINE(19, 8),
640 REGMAP_IRQ_REG_LINE(20, 8), REGMAP_IRQ_REG_LINE(21, 8), REGMAP_IRQ_REG_LINE(22, 8), REGMAP_IRQ_REG_LINE(23, 8)};
641
642 static struct regmap_irq_chip rk805_irq_chip = {
643 .name = "rk805",
644 .irqs = rk805_irqs,
645 .num_irqs = ARRAY_SIZE(rk805_irqs),
646 .num_regs = 1,
647 .status_base = RK805_INT_STS_REG,
648 .mask_base = RK805_INT_STS_MSK_REG,
649 .ack_base = RK805_INT_STS_REG,
650 .init_ack_masked = true,
651 };
652
653 static const struct regmap_irq_chip rk808_irq_chip = {
654 .name = "rk808",
655 .irqs = rk808_irqs,
656 .num_irqs = ARRAY_SIZE(rk808_irqs),
657 .num_regs = 2,
658 .irq_reg_stride = 2,
659 .status_base = RK808_INT_STS_REG1,
660 .mask_base = RK808_INT_STS_MSK_REG1,
661 .ack_base = RK808_INT_STS_REG1,
662 .init_ack_masked = true,
663 };
664
665 static const struct regmap_irq rk816_battery_irqs[] = {
666 /* INT_STS */
667 [RK816_IRQ_PLUG_IN] =
668 {
669 .mask = RK816_IRQ_PLUG_IN_MSK,
670 .reg_offset = 0,
671 },
672 [RK816_IRQ_PLUG_OUT] =
673 {
674 .mask = RK816_IRQ_PLUG_OUT_MSK,
675 .reg_offset = 0,
676 },
677 [RK816_IRQ_CHG_OK] =
678 {
679 .mask = RK816_IRQ_CHG_OK_MSK,
680 .reg_offset = 0,
681 },
682 [RK816_IRQ_CHG_TE] =
683 {
684 .mask = RK816_IRQ_CHG_TE_MSK,
685 .reg_offset = 0,
686 },
687 [RK816_IRQ_CHG_TS] =
688 {
689 .mask = RK816_IRQ_CHG_TS_MSK,
690 .reg_offset = 0,
691 },
692 [RK816_IRQ_CHG_CVTLIM] =
693 {
694 .mask = RK816_IRQ_CHG_CVTLIM_MSK,
695 .reg_offset = 0,
696 },
697 [RK816_IRQ_DISCHG_ILIM] =
698 {
699 .mask = RK816_IRQ_DISCHG_ILIM_MSK,
700 .reg_offset = 0,
701 },
702 };
703
704 static struct regmap_irq_chip rk816_irq_chip = {
705 .name = "rk816",
706 .irqs = rk816_irqs,
707 .num_irqs = ARRAY_SIZE(rk816_irqs),
708 .num_regs = 2,
709 .irq_reg_stride = 3,
710 .status_base = RK816_INT_STS_REG1,
711 .mask_base = RK816_INT_STS_MSK_REG1,
712 .ack_base = RK816_INT_STS_REG1,
713 .init_ack_masked = true,
714 };
715
716 static struct regmap_irq_chip rk816_battery_irq_chip = {
717 .name = "rk816_battery",
718 .irqs = rk816_battery_irqs,
719 .num_irqs = ARRAY_SIZE(rk816_battery_irqs),
720 .num_regs = 1,
721 .status_base = RK816_INT_STS_REG3,
722 .mask_base = RK816_INT_STS_MSK_REG3,
723 .ack_base = RK816_INT_STS_REG3,
724 .init_ack_masked = true,
725 };
726
727 static struct regmap_irq_chip rk817_irq_chip = {
728 .name = "rk817",
729 .irqs = rk817_irqs,
730 .num_irqs = ARRAY_SIZE(rk817_irqs),
731 .num_regs = 3,
732 .irq_reg_stride = 2,
733 .status_base = RK817_INT_STS_REG0,
734 .mask_base = RK817_INT_STS_MSK_REG0,
735 .ack_base = RK817_INT_STS_REG0,
736 .init_ack_masked = true,
737 };
738
739 static const struct regmap_irq_chip rk818_irq_chip = {
740 .name = "rk818",
741 .irqs = rk818_irqs,
742 .num_irqs = ARRAY_SIZE(rk818_irqs),
743 .num_regs = 2,
744 .irq_reg_stride = 2,
745 .status_base = RK818_INT_STS_REG1,
746 .mask_base = RK818_INT_STS_MSK_REG1,
747 .ack_base = RK818_INT_STS_REG1,
748 .init_ack_masked = true,
749 };
750
751 static struct i2c_client *rk808_i2c_client;
752 static struct rk808_reg_data *suspend_reg, *resume_reg;
753 static int suspend_reg_num, resume_reg_num;
754
rk805_device_shutdown_prepare(void)755 static void rk805_device_shutdown_prepare(void)
756 {
757 int ret;
758 struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);
759
760 if (!rk808) {
761 return;
762 }
763
764 ret = regmap_update_bits(rk808->regmap, RK805_GPIO_IO_POL_REG, SLP_SD_MSK, SHUTDOWN_FUN);
765 if (ret) {
766 dev_err(&rk808_i2c_client->dev, "Failed to shutdown device!\n");
767 }
768 }
769
rk817_shutdown_prepare(void)770 static void rk817_shutdown_prepare(void)
771 {
772 int ret;
773 struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);
774
775 /* close rtc int when power off */
776 regmap_update_bits(rk808->regmap, RK817_INT_STS_MSK_REG0, (RK_REG_VAL_THREE << RK_REG_SHIFT_MASK_FIVE),
777 (RK_REG_VAL_THREE << RK_REG_SHIFT_MASK_FIVE));
778 regmap_update_bits(rk808->regmap, RK817_RTC_INT_REG, (RK_REG_VAL_THREE << RK_REG_SHIFT_MASK_TWO),
779 (RK_REG_VAL_ZERO << RK_REG_SHIFT_MASK_TWO));
780
781 if (rk808->pins && rk808->pins->p && rk808->pins->power_off) {
782 ret =
783 regmap_update_bits(rk808->regmap, RK817_SYS_CFG(RK_REG_VAL_THREE), RK817_SLPPIN_FUNC_MSK, SLPPIN_NULL_FUN);
784 if (ret) {
785 pr_err("shutdown: config SLPPIN_NULL_FUN error!\n");
786 }
787
788 ret = regmap_update_bits(rk808->regmap, RK817_SYS_CFG(RK_REG_VAL_THREE), RK817_SLPPOL_MSK, RK817_SLPPOL_H);
789 if (ret) {
790 pr_err("shutdown: config RK817_SLPPOL_H error!\n");
791 }
792
793 ret = pinctrl_select_state(rk808->pins->p, rk808->pins->power_off);
794 if (ret) {
795 pr_info("%s:failed to activate pwroff state\n", __func__);
796 }
797 }
798
799 /* pmic sleep shutdown function */
800 ret = regmap_update_bits(rk808->regmap, RK817_SYS_CFG(RK_REG_VAL_THREE), RK817_SLPPIN_FUNC_MSK, SLPPIN_DN_FUN);
801 if (ret) {
802 dev_err(&rk808_i2c_client->dev, "Failed to shutdown device!\n");
803 }
804 /* pmic need the SCL clock to synchronize register */
805 mdelay(RK_DELAY_COUNT_TWO_MS);
806 }
807
rk8xx_device_shutdown(void)808 static void rk8xx_device_shutdown(void)
809 {
810 int ret;
811 unsigned int reg, bit;
812 struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);
813
814 switch (rk808->variant) {
815 case RK805_ID:
816 reg = RK805_DEV_CTRL_REG;
817 bit = DEV_OFF;
818 break;
819 case RK808_ID:
820 reg = RK808_DEVCTRL_REG, bit = DEV_OFF_RST;
821 break;
822 case RK816_ID:
823 reg = RK816_DEV_CTRL_REG;
824 bit = DEV_OFF;
825 break;
826 case RK818_ID:
827 reg = RK818_DEVCTRL_REG;
828 bit = DEV_OFF;
829 break;
830 default:
831 return;
832 }
833
834 ret = regmap_update_bits(rk808->regmap, reg, bit, bit);
835 if (ret) {
836 dev_err(&rk808_i2c_client->dev, "Failed to shutdown device!\n");
837 }
838 }
839
840 /* Called in syscore shutdown */
841 static void (*pm_shutdown)(void);
842
rk8xx_syscore_shutdown(void)843 static void rk8xx_syscore_shutdown(void)
844 {
845 int ret;
846 struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);
847
848 if (!rk808) {
849 dev_warn(&rk808_i2c_client->dev, "have no rk808, so do nothing here\n");
850 return;
851 }
852
853 /* close rtc int when power off */
854 regmap_update_bits(rk808->regmap, RK808_INT_STS_MSK_REG1, (RK_REG_VAL_THREE << RK_REG_SHIFT_MASK_FIVE),
855 (RK_REG_VAL_THREE << RK_REG_SHIFT_MASK_FIVE));
856 regmap_update_bits(rk808->regmap, RK808_RTC_INT_REG, (RK_REG_VAL_THREE << RK_REG_SHIFT_MASK_TWO),
857 (RK_REG_VAL_ZERO << RK_REG_SHIFT_MASK_TWO));
858 /*
859 * For PMIC that power off supplies by write register via i2c bus,
860 * it's better to do power off at syscore shutdown here.
861 *
862 * Because when run to kernel's "pm_power_off" call, i2c may has
863 * been stopped or PMIC may not be able to get i2c transfer while
864 * there are too many devices are competiting.
865 */
866 if (system_state == SYSTEM_POWER_OFF) {
867 if (rk808->variant == RK809_ID || rk808->variant == RK817_ID) {
868 ret = regmap_update_bits(rk808->regmap, RK817_SYS_CFG(RK_REG_VAL_THREE), RK817_SLPPIN_FUNC_MSK,
869 SLPPIN_DN_FUN);
870 if (ret) {
871 dev_warn(&rk808_i2c_client->dev, "Cannot switch to power down function\n");
872 }
873 }
874
875 if (pm_shutdown) {
876 dev_info(&rk808_i2c_client->dev, "System power off\n");
877 pm_shutdown();
878 mdelay(RK_DELAY_COUNT_TEN_MS);
879 dev_info(&rk808_i2c_client->dev, "Power off failed !\n");
880 while (1) {
881 ;
882 }
883 }
884 }
885 }
886
887 static struct syscore_ops rk808_syscore_ops = {
888 .shutdown = rk8xx_syscore_shutdown,
889 };
890
891 /*
892 * RK8xx PMICs would do real power off in syscore shutdown, if "pm_power_off"
893 * is not assigned(e.g. PSCI is not enabled), we have to provide a dummy
894 * callback for it, otherwise there comes a halt in Reboot system call:
895 *
896 * if ((cmd == LINUX_REBOOT_CMD_POWER_OFF) && !pm_power_off)
897 * cmd = LINUX_REBOOT_CMD_HALT;
898 */
rk808_pm_power_off_dummy(void)899 static void rk808_pm_power_off_dummy(void)
900 {
901 pr_info("Dummy power off for RK8xx PMICs, should never reach here!\n");
902
903 while (1) {
904 ;
905 }
906 }
907
rk8xx_dbg_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)908 static ssize_t rk8xx_dbg_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
909 {
910 int ret;
911 char cmd;
912 u32 input[2], addr, data;
913 struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);
914
915 ret = sscanf(buf, "%c ", &cmd);
916 if (ret != RK_SSCAN_RET_RESULT_ONE) {
917 pr_err("Unknown command\n");
918 goto out;
919 }
920 switch (cmd) {
921 case 'w':
922 ret = sscanf(buf, "%c %x %x ", &cmd, &input[0], &input[1]);
923 if (ret != RK_SSCAN_RET_RESULT_THREE) {
924 pr_err("error! cmd format: echo w [addr] [value]\n");
925 goto out;
926 };
927 addr = input[0] & RK_INPUT_MASK;
928 data = input[1] & RK_INPUT_MASK;
929 pr_info("cmd : %c %x %x\n\n", cmd, input[0], input[1]);
930 regmap_write(rk808->regmap, addr, data);
931 regmap_read(rk808->regmap, addr, &data);
932 pr_info("new: %x %x\n", addr, data);
933 break;
934 case 'r':
935 ret = sscanf(buf, "%c %x ", &cmd, &input[0]);
936 if (ret != RK_SSCAN_RET_RESULT_TWO) {
937 pr_err("error! cmd format: echo r [addr]\n");
938 goto out;
939 };
940 pr_info("cmd : %c %x\n\n", cmd, input[0]);
941 addr = input[0] & RK_INPUT_MASK;
942 regmap_read(rk808->regmap, addr, &data);
943 pr_info("%x %x\n", input[0], data);
944 break;
945 default:
946 pr_err("Unknown command\n");
947 break;
948 }
949
950 out:
951 return count;
952 }
953
rk817_pinctrl_init(struct device *dev, struct rk808 *rk808)954 static int rk817_pinctrl_init(struct device *dev, struct rk808 *rk808)
955 {
956 int ret;
957 struct platform_device *pinctrl_dev;
958 struct pinctrl_state *default_st;
959
960 pinctrl_dev = platform_device_alloc("rk805-pinctrl", -1);
961 if (!pinctrl_dev) {
962 dev_err(dev, "Alloc pinctrl dev failed!\n");
963 return -ENOMEM;
964 }
965
966 pinctrl_dev->dev.parent = dev;
967 ret = platform_device_add(pinctrl_dev);
968 if (ret) {
969 platform_device_put(pinctrl_dev);
970 dev_err(dev, "Add rk805-pinctrl dev failed!\n");
971 return ret;
972 }
973 if (dev->pins && !IS_ERR(dev->pins->p)) {
974 dev_info(dev, "had get a pinctrl!\n");
975 return 0;
976 }
977
978 rk808->pins = devm_kzalloc(dev, sizeof(struct rk808_pin_info), GFP_KERNEL);
979 if (!rk808->pins) {
980 return -ENOMEM;
981 }
982
983 rk808->pins->p = devm_pinctrl_get(dev);
984 if (IS_ERR(rk808->pins->p)) {
985 rk808->pins->p = NULL;
986 dev_err(dev, "no pinctrl handle\n");
987 return 0;
988 }
989 default_st = pinctrl_lookup_state(rk808->pins->p, PINCTRL_STATE_DEFAULT);
990 if (IS_ERR(default_st)) {
991 dev_dbg(dev, "no default pinctrl state\n");
992 return -EINVAL;
993 }
994
995 ret = pinctrl_select_state(rk808->pins->p, default_st);
996 if (ret) {
997 dev_dbg(dev, "failed to activate default pinctrl state\n");
998 return -EINVAL;
999 }
1000
1001 rk808->pins->power_off = pinctrl_lookup_state(rk808->pins->p, "pmic-power-off");
1002 if (IS_ERR(rk808->pins->power_off)) {
1003 rk808->pins->power_off = NULL;
1004 dev_dbg(dev, "no power-off pinctrl state\n");
1005 }
1006
1007 rk808->pins->sleep = pinctrl_lookup_state(rk808->pins->p, "pmic-sleep");
1008 if (IS_ERR(rk808->pins->sleep)) {
1009 rk808->pins->sleep = NULL;
1010 dev_dbg(dev, "no sleep-setting state\n");
1011 }
1012
1013 rk808->pins->reset = pinctrl_lookup_state(rk808->pins->p, "pmic-reset");
1014 if (IS_ERR(rk808->pins->reset)) {
1015 rk808->pins->reset = NULL;
1016 dev_dbg(dev, "no reset-setting pinctrl state\n");
1017 return 0;
1018 }
1019 ret = pinctrl_select_state(rk808->pins->p, rk808->pins->reset);
1020 if (ret) {
1021 dev_dbg(dev, "failed to activate reset-setting pinctrl state\n");
1022 }
1023
1024 return 0;
1025 }
1026
1027 struct rk817_reboot_data_t {
1028 struct rk808 *rk808;
1029 struct notifier_block reboot_notifier;
1030 };
1031
1032 static struct rk817_reboot_data_t rk817_reboot_data;
1033
rk817_reboot_notifier_handler(struct notifier_block *nb, unsigned long action, void *cmd)1034 static int rk817_reboot_notifier_handler(struct notifier_block *nb, unsigned long action, void *cmd)
1035 {
1036 struct rk817_reboot_data_t *data;
1037 struct device *dev;
1038 int value, power_en_active0, power_en_active1;
1039 int ret, i;
1040 static const char *const pmic_rst_reg_only_cmd[] = {
1041 "loader", "bootloader", "fastboot", "recovery", "ums", "panic", "watchdog", "charge",
1042 };
1043
1044 data = container_of(nb, struct rk817_reboot_data_t, reboot_notifier);
1045 dev = &data->rk808->i2c->dev;
1046
1047 regmap_read(data->rk808->regmap, RK817_POWER_EN_SAVE0, &power_en_active0);
1048 if (power_en_active0 != 0) {
1049 regmap_read(data->rk808->regmap, RK817_POWER_EN_SAVE1, &power_en_active1);
1050 value = power_en_active0 & RK_BYTE_LOW_FOUR_BIT_MASK;
1051 regmap_write(data->rk808->regmap, RK817_POWER_EN_REG(RK_POWER_EN_REG_VALUE_ZERO),
1052 value | RK_BYTE_HIGH_FOUR_BIT_MASK);
1053 value = (power_en_active0 & RK_BYTE_HIGH_FOUR_BIT_MASK) >> RK_BYTE_FOUR_BIT_SHIFT_MASK;
1054 regmap_write(data->rk808->regmap, RK817_POWER_EN_REG(RK_POWER_EN_REG_VALUE_ONE),
1055 value | RK_BYTE_HIGH_FOUR_BIT_MASK);
1056 value = power_en_active1 & RK_BYTE_LOW_FOUR_BIT_MASK;
1057 regmap_write(data->rk808->regmap, RK817_POWER_EN_REG(RK_POWER_EN_REG_VALUE_TWO),
1058 value | RK_BYTE_HIGH_FOUR_BIT_MASK);
1059 value = (power_en_active1 & RK_BYTE_HIGH_FOUR_BIT_MASK) >> RK_BYTE_FOUR_BIT_SHIFT_MASK;
1060 regmap_write(data->rk808->regmap, RK817_POWER_EN_REG(RK_POWER_EN_REG_VALUE_THREE),
1061 value | RK_BYTE_HIGH_FOUR_BIT_MASK);
1062 } else {
1063 dev_info(dev, "reboot: not restore POWER_EN\n");
1064 }
1065
1066 if (action != SYS_RESTART || !cmd) {
1067 return NOTIFY_OK;
1068 }
1069
1070 /*
1071 * When system restart, there are two rst actions of PMIC sleep if
1072 * board hardware support:
1073 *
1074 * 0b'00: reset the PMIC itself completely.
1075 * 0b'01: reset the 'RST' related register only.
1076 *
1077 * In the case of 0b'00, PMIC reset itself which triggers SoC NPOR-reset
1078 * at the same time, so the command: reboot load/bootload/recovery, etc
1079 * is not effect any more.
1080 *
1081 * Here we check if this reboot cmd is what we expect for 0b'01.
1082 */
1083 for (i = 0; i < ARRAY_SIZE(pmic_rst_reg_only_cmd); i++) {
1084 if (!strcmp(cmd, pmic_rst_reg_only_cmd[i])) {
1085 ret = regmap_update_bits(data->rk808->regmap, RK817_SYS_CFG(RK_REG_VAL_THREE), RK817_RST_FUNC_MSK,
1086 RK817_RST_FUNC_REG);
1087 if (ret) {
1088 dev_err(dev, "reboot: force RK817_RST_FUNC_REG error!\n");
1089 } else {
1090 dev_info(dev, "reboot: force RK817_RST_FUNC_REG ok!\n");
1091 }
1092 break;
1093 }
1094 }
1095
1096 return NOTIFY_OK;
1097 }
1098
rk817_of_property_prepare(struct rk808 *rk808, struct device *dev)1099 static void rk817_of_property_prepare(struct rk808 *rk808, struct device *dev)
1100 {
1101 u32 inner;
1102 int ret, func, msk, val;
1103 struct device_node *np = dev->of_node;
1104
1105 ret = of_property_read_u32_index(np, "fb-inner-reg-idxs", 0, &inner);
1106 if (!ret && inner == RK817_ID_DCDC3) {
1107 regmap_update_bits(rk808->regmap, RK817_POWER_CONFIG, RK817_BUCK3_FB_RES_MSK, RK817_BUCK3_FB_RES_INTER);
1108 } else {
1109 regmap_update_bits(rk808->regmap, RK817_POWER_CONFIG, RK817_BUCK3_FB_RES_MSK, RK817_BUCK3_FB_RES_EXT);
1110 }
1111 dev_info(dev, "support dcdc3 fb mode:%d, %d\n", ret, inner);
1112
1113 ret = of_property_read_u32(np, "pmic-reset-func", &func);
1114
1115 msk = RK817_SLPPIN_FUNC_MSK | RK817_RST_FUNC_MSK;
1116 val = SLPPIN_NULL_FUN;
1117
1118 if (!ret && func < RK817_RST_FUNC_CNT) {
1119 val |= RK817_RST_FUNC_MSK & (func << RK817_RST_FUNC_SFT);
1120 } else {
1121 val |= RK817_RST_FUNC_REG;
1122 }
1123
1124 regmap_update_bits(rk808->regmap, RK817_SYS_CFG(RK_REG_VAL_THREE), msk, val);
1125
1126 dev_info(dev, "support pmic reset mode:%d,%d\n", ret, func);
1127
1128 rk817_reboot_data.rk808 = rk808;
1129 rk817_reboot_data.reboot_notifier.notifier_call = rk817_reboot_notifier_handler;
1130 ret = register_reboot_notifier(&rk817_reboot_data.reboot_notifier);
1131 if (ret) {
1132 dev_err(dev, "failed to register reboot nb\n");
1133 }
1134 }
1135
1136 static struct kobject *rk8xx_kobj;
1137 static struct device_attribute rk8xx_attrs = __ATTR(rk8xx_dbg, 0200, NULL, rk8xx_dbg_store);
1138
1139 static const struct of_device_id rk808_of_match[] = {
1140 {.compatible = "rockchip,rk805"},
1141 {.compatible = "rockchip,rk808"},
1142 {.compatible = "rockchip,rk809"},
1143 {.compatible = "rockchip,rk816"},
1144 {.compatible = "rockchip,rk817"},
1145 {.compatible = "rockchip,rk818"},
1146 {},
1147 };
1148 MODULE_DEVICE_TABLE(of, rk808_of_match);
1149
rk808_probe(struct i2c_client *client, const struct i2c_device_id *id)1150 static int rk808_probe(struct i2c_client *client, const struct i2c_device_id *id)
1151 {
1152 struct device_node *np = client->dev.of_node;
1153 struct rk808 *rk808;
1154 const struct rk808_reg_data *pre_init_reg;
1155 const struct regmap_irq_chip *battery_irq_chip = NULL;
1156 const struct mfd_cell *cells;
1157 unsigned char pmic_id_msb, pmic_id_lsb;
1158 u8 on_source = 0, off_source = 0;
1159 unsigned int on, off;
1160 int pm_off = 0, msb, lsb;
1161 int nr_pre_init_regs;
1162 int nr_cells;
1163 int ret;
1164 int i;
1165 void (*of_property_prepare_fn)(struct rk808 * rk808, struct device * dev) = NULL;
1166 int (*pinctrl_init)(struct device * dev, struct rk808 * rk808) = NULL;
1167 void (*device_shutdown_fn)(void) = NULL;
1168
1169 rk808 = devm_kzalloc(&client->dev, sizeof(*rk808), GFP_KERNEL);
1170 if (!rk808) {
1171 return -ENOMEM;
1172 }
1173
1174 if (of_device_is_compatible(np, "rockchip,rk817") || of_device_is_compatible(np, "rockchip,rk809")) {
1175 pmic_id_msb = RK817_ID_MSB;
1176 pmic_id_lsb = RK817_ID_LSB;
1177 } else {
1178 pmic_id_msb = RK808_ID_MSB;
1179 pmic_id_lsb = RK808_ID_LSB;
1180 }
1181
1182 /* Read chip variant */
1183 msb = i2c_smbus_read_byte_data(client, pmic_id_msb);
1184 if (msb < 0) {
1185 dev_err(&client->dev, "failed to read the chip id at 0x%x\n", RK808_ID_MSB);
1186 return msb;
1187 }
1188
1189 lsb = i2c_smbus_read_byte_data(client, pmic_id_lsb);
1190 if (lsb < 0) {
1191 dev_err(&client->dev, "failed to read the chip id at 0x%x\n", RK808_ID_LSB);
1192 return lsb;
1193 }
1194
1195 rk808->variant = ((msb << RK_REG_SHIFT_MASK_EIGHT) | lsb) & RK8XX_ID_MSK;
1196 dev_info(&client->dev, "chip id: 0x%x\n", (unsigned int)rk808->variant);
1197
1198 switch (rk808->variant) {
1199 case RK805_ID:
1200 rk808->regmap_cfg = &rk805_regmap_config;
1201 rk808->regmap_irq_chip = &rk805_irq_chip;
1202 pre_init_reg = rk805_pre_init_reg;
1203 nr_pre_init_regs = ARRAY_SIZE(rk805_pre_init_reg);
1204 cells = rk805s;
1205 nr_cells = ARRAY_SIZE(rk805s);
1206 on_source = RK805_ON_SOURCE_REG;
1207 off_source = RK805_OFF_SOURCE_REG;
1208 suspend_reg = rk805_suspend_reg;
1209 suspend_reg_num = ARRAY_SIZE(rk805_suspend_reg);
1210 resume_reg = rk805_resume_reg;
1211 resume_reg_num = ARRAY_SIZE(rk805_resume_reg);
1212 device_shutdown_fn = rk8xx_device_shutdown;
1213 rk808->pm_pwroff_prep_fn = rk805_device_shutdown_prepare;
1214 break;
1215 case RK808_ID:
1216 rk808->regmap_cfg = &rk808_regmap_config;
1217 rk808->regmap_irq_chip = &rk808_irq_chip;
1218 pre_init_reg = rk808_pre_init_reg;
1219 nr_pre_init_regs = ARRAY_SIZE(rk808_pre_init_reg);
1220 cells = rk808s;
1221 nr_cells = ARRAY_SIZE(rk808s);
1222 device_shutdown_fn = rk8xx_device_shutdown;
1223 break;
1224 case RK816_ID:
1225 rk808->regmap_cfg = &rk816_regmap_config;
1226 rk808->regmap_irq_chip = &rk816_irq_chip;
1227 battery_irq_chip = &rk816_battery_irq_chip;
1228 pre_init_reg = rk816_pre_init_reg;
1229 nr_pre_init_regs = ARRAY_SIZE(rk816_pre_init_reg);
1230 cells = rk816s;
1231 nr_cells = ARRAY_SIZE(rk816s);
1232 on_source = RK816_ON_SOURCE_REG;
1233 off_source = RK816_OFF_SOURCE_REG;
1234 suspend_reg = rk816_suspend_reg;
1235 suspend_reg_num = ARRAY_SIZE(rk816_suspend_reg);
1236 resume_reg = rk816_resume_reg;
1237 resume_reg_num = ARRAY_SIZE(rk816_resume_reg);
1238 device_shutdown_fn = rk8xx_device_shutdown;
1239 break;
1240 case RK818_ID:
1241 rk808->regmap_cfg = &rk818_regmap_config;
1242 rk808->regmap_irq_chip = &rk818_irq_chip;
1243 pre_init_reg = rk818_pre_init_reg;
1244 nr_pre_init_regs = ARRAY_SIZE(rk818_pre_init_reg);
1245 cells = rk818s;
1246 nr_cells = ARRAY_SIZE(rk818s);
1247 on_source = RK818_ON_SOURCE_REG;
1248 off_source = RK818_OFF_SOURCE_REG;
1249 suspend_reg = rk818_suspend_reg;
1250 suspend_reg_num = ARRAY_SIZE(rk818_suspend_reg);
1251 resume_reg = rk818_resume_reg;
1252 resume_reg_num = ARRAY_SIZE(rk818_resume_reg);
1253 device_shutdown_fn = rk8xx_device_shutdown;
1254 break;
1255 case RK809_ID:
1256 case RK817_ID:
1257 rk808->regmap_cfg = &rk817_regmap_config;
1258 rk808->regmap_irq_chip = &rk817_irq_chip;
1259 pre_init_reg = rk817_pre_init_reg;
1260 nr_pre_init_regs = ARRAY_SIZE(rk817_pre_init_reg);
1261 cells = rk817s;
1262 nr_cells = ARRAY_SIZE(rk817s);
1263 on_source = RK817_ON_SOURCE_REG;
1264 off_source = RK817_OFF_SOURCE_REG;
1265 rk808->pm_pwroff_prep_fn = rk817_shutdown_prepare;
1266 of_property_prepare_fn = rk817_of_property_prepare;
1267 pinctrl_init = rk817_pinctrl_init;
1268 break;
1269 default:
1270 dev_err(&client->dev, "Unsupported RK8XX ID %lu\n", rk808->variant);
1271 return -EINVAL;
1272 }
1273
1274 rk808->i2c = client;
1275 rk808_i2c_client = client;
1276 i2c_set_clientdata(client, rk808);
1277
1278 rk808->regmap = devm_regmap_init_i2c(client, rk808->regmap_cfg);
1279 if (IS_ERR(rk808->regmap)) {
1280 dev_err(&client->dev, "regmap initialization failed\n");
1281 return PTR_ERR(rk808->regmap);
1282 }
1283
1284 if (on_source && off_source) {
1285 ret = regmap_read(rk808->regmap, on_source, &on);
1286 if (ret) {
1287 dev_err(&client->dev, "read 0x%x failed\n", on_source);
1288 return ret;
1289 }
1290
1291 ret = regmap_read(rk808->regmap, off_source, &off);
1292 if (ret) {
1293 dev_err(&client->dev, "read 0x%x failed\n", off_source);
1294 return ret;
1295 }
1296
1297 dev_info(&client->dev, "source: on=0x%02x, off=0x%02x\n", on, off);
1298 }
1299
1300 if (!client->irq) {
1301 dev_err(&client->dev, "No interrupt support, no core IRQ\n");
1302 return -EINVAL;
1303 }
1304
1305 if (of_property_prepare_fn) {
1306 of_property_prepare_fn(rk808, &client->dev);
1307 }
1308
1309 for (i = 0; i < nr_pre_init_regs; i++) {
1310 ret = regmap_update_bits(rk808->regmap, pre_init_reg[i].addr, pre_init_reg[i].mask, pre_init_reg[i].value);
1311 if (ret) {
1312 dev_err(&client->dev, "0x%x write err\n", pre_init_reg[i].addr);
1313 return ret;
1314 }
1315 }
1316
1317 if (pinctrl_init) {
1318 ret = pinctrl_init(&client->dev, rk808);
1319 if (ret) {
1320 return ret;
1321 }
1322 }
1323
1324 ret = regmap_add_irq_chip(rk808->regmap, client->irq, IRQF_ONESHOT, -1, rk808->regmap_irq_chip, &rk808->irq_data);
1325 if (ret) {
1326 dev_err(&client->dev, "Failed to add irq_chip %d\n", ret);
1327 return ret;
1328 }
1329
1330 if (battery_irq_chip) {
1331 ret = regmap_add_irq_chip(rk808->regmap, client->irq, IRQF_ONESHOT | IRQF_SHARED, -1, battery_irq_chip,
1332 &rk808->battery_irq_data);
1333 if (ret) {
1334 dev_err(&client->dev, "Failed to add batterry irq_chip %d\n", ret);
1335 regmap_del_irq_chip(client->irq, rk808->irq_data);
1336 return ret;
1337 }
1338 }
1339
1340 ret = devm_mfd_add_devices(&client->dev, PLATFORM_DEVID_NONE, cells, nr_cells, NULL, 0,
1341 regmap_irq_get_domain(rk808->irq_data));
1342 if (ret) {
1343 dev_err(&client->dev, "failed to add MFD devices %d\n", ret);
1344 goto err_irq;
1345 }
1346
1347 pm_off = of_property_read_bool(np, "rockchip,system-power-controller");
1348 if (pm_off) {
1349 if (!pm_power_off_prepare) {
1350 pm_power_off_prepare = rk808->pm_pwroff_prep_fn;
1351 }
1352
1353 if (device_shutdown_fn) {
1354 register_syscore_ops(&rk808_syscore_ops);
1355 /* power off system in the syscore shutdown ! */
1356 pm_shutdown = device_shutdown_fn;
1357 }
1358 }
1359
1360 rk8xx_kobj = kobject_create_and_add("rk8xx", NULL);
1361 if (rk8xx_kobj) {
1362 ret = sysfs_create_file(rk8xx_kobj, &rk8xx_attrs.attr);
1363 if (ret) {
1364 dev_err(&client->dev, "create rk8xx sysfs error\n");
1365 }
1366 }
1367
1368 if (!pm_power_off) {
1369 pm_power_off = rk808_pm_power_off_dummy;
1370 }
1371
1372 return 0;
1373
1374 err_irq:
1375 regmap_del_irq_chip(client->irq, rk808->irq_data);
1376 if (battery_irq_chip) {
1377 regmap_del_irq_chip(client->irq, rk808->battery_irq_data);
1378 }
1379 return ret;
1380 }
1381
rk808_remove(struct i2c_client *client)1382 static int rk808_remove(struct i2c_client *client)
1383 {
1384 struct rk808 *rk808 = i2c_get_clientdata(client);
1385
1386 regmap_del_irq_chip(client->irq, rk808->irq_data);
1387 mfd_remove_devices(&client->dev);
1388
1389 /**
1390 * pm_power_off may points to a function from another module.
1391 * Check if the pointer is set by us and only then overwrite it.
1392 */
1393 if (pm_power_off == rk808_pm_power_off_dummy) {
1394 pm_power_off = NULL;
1395 }
1396
1397 /**
1398 * As above, check if the pointer is set by us before overwrite.
1399 */
1400 if (rk808->pm_pwroff_prep_fn && pm_power_off_prepare == rk808->pm_pwroff_prep_fn) {
1401 pm_power_off_prepare = NULL;
1402 }
1403
1404 if (pm_shutdown) {
1405 unregister_syscore_ops(&rk808_syscore_ops);
1406 }
1407
1408 return 0;
1409 }
1410
rk8xx_suspend(struct device *dev)1411 static int __maybe_unused rk8xx_suspend(struct device *dev)
1412 {
1413 struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);
1414 int i, ret = 0;
1415 int value;
1416
1417 for (i = 0; i < suspend_reg_num; i++) {
1418 ret = regmap_update_bits(rk808->regmap, suspend_reg[i].addr, suspend_reg[i].mask, suspend_reg[i].value);
1419 if (ret) {
1420 dev_err(dev, "0x%x write err\n", suspend_reg[i].addr);
1421 return ret;
1422 }
1423 }
1424
1425 switch (rk808->variant) {
1426 case RK805_ID:
1427 ret = regmap_update_bits(rk808->regmap, RK805_GPIO_IO_POL_REG, SLP_SD_MSK, SLEEP_FUN);
1428 break;
1429 case RK809_ID:
1430 case RK817_ID:
1431 if (rk808->pins && rk808->pins->p && rk808->pins->sleep) {
1432 ret = regmap_update_bits(rk808->regmap, RK817_SYS_CFG(3), RK817_SLPPIN_FUNC_MSK, SLPPIN_NULL_FUN);
1433 if (ret) {
1434 dev_err(dev, "suspend: config SLPPIN_NULL_FUN error!\n");
1435 return ret;
1436 }
1437
1438 ret = regmap_update_bits(rk808->regmap, RK817_SYS_CFG(3), RK817_SLPPOL_MSK, RK817_SLPPOL_H);
1439 if (ret) {
1440 dev_err(dev, "suspend: config RK817_SLPPOL_H error!\n");
1441 return ret;
1442 }
1443
1444 /* pmic need the SCL clock to synchronize register */
1445 regmap_read(rk808->regmap, RK817_SYS_STS, &value);
1446 mdelay(2);
1447 ret = pinctrl_select_state(rk808->pins->p, rk808->pins->sleep);
1448 if (ret) {
1449 dev_err(dev, "failed to act slp pinctrl state\n");
1450 return ret;
1451 }
1452 }
1453 break;
1454 default:
1455 break;
1456 }
1457
1458 return ret;
1459 }
1460
rk8xx_resume(struct device *dev)1461 static int __maybe_unused rk8xx_resume(struct device *dev)
1462 {
1463 struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);
1464 int i, ret = 0;
1465 int value;
1466
1467 for (i = 0; i < resume_reg_num; i++) {
1468 ret = regmap_update_bits(rk808->regmap, resume_reg[i].addr, resume_reg[i].mask, resume_reg[i].value);
1469 if (ret) {
1470 dev_err(dev, "0x%x write err\n", resume_reg[i].addr);
1471 return ret;
1472 }
1473 }
1474
1475 switch (rk808->variant) {
1476 case RK809_ID:
1477 case RK817_ID:
1478 if (rk808->pins && rk808->pins->p && rk808->pins->reset) {
1479 ret = regmap_update_bits(rk808->regmap, RK817_SYS_CFG(3), RK817_SLPPIN_FUNC_MSK, SLPPIN_NULL_FUN);
1480 if (ret) {
1481 dev_err(dev, "resume: config SLPPIN_NULL_FUN error!\n");
1482 return ret;
1483 }
1484
1485 ret = regmap_update_bits(rk808->regmap, RK817_SYS_CFG(3), RK817_SLPPOL_MSK, RK817_SLPPOL_L);
1486 if (ret) {
1487 dev_err(dev, "resume: config RK817_SLPPOL_L error!\n");
1488 return ret;
1489 }
1490
1491 /* pmic need the SCL clock to synchronize register */
1492 regmap_read(rk808->regmap, RK817_SYS_STS, &value);
1493 mdelay(2);
1494 ret = pinctrl_select_state(rk808->pins->p, rk808->pins->reset);
1495 if (ret) {
1496 dev_dbg(dev, "failed to act reset pinctrl state\n");
1497 }
1498 }
1499 break;
1500 default:
1501 break;
1502 }
1503
1504 return ret;
1505 }
1506 SIMPLE_DEV_PM_OPS(rk8xx_pm_ops, rk8xx_suspend, rk8xx_resume);
1507
1508 static struct i2c_driver rk808_i2c_driver = {
1509 .driver =
1510 {
1511 .name = "rk808",
1512 .of_match_table = rk808_of_match,
1513 .pm = &rk8xx_pm_ops,
1514 },
1515 .probe = rk808_probe,
1516 .remove = rk808_remove,
1517 };
1518
1519 #ifdef CONFIG_ROCKCHIP_THUNDER_BOOT
rk808_i2c_driver_init(void)1520 static int __init rk808_i2c_driver_init(void)
1521 {
1522 return i2c_add_driver(&rk808_i2c_driver);
1523 }
1524 subsys_initcall(rk808_i2c_driver_init);
1525
rk808_i2c_driver_exit(void)1526 static void __exit rk808_i2c_driver_exit(void)
1527 {
1528 i2c_del_driver(&rk808_i2c_driver);
1529 }
1530 module_exit(rk808_i2c_driver_exit);
1531 #else
1532 module_i2c_driver(rk808_i2c_driver);
1533 #endif
1534
1535 MODULE_LICENSE("GPL");
1536 MODULE_AUTHOR("Chris Zhong <zyw@rock-chips.com>");
1537 MODULE_AUTHOR("Zhang Qing <zhangqing@rock-chips.com>");
1538 MODULE_AUTHOR("Wadim Egorov <w.egorov@phytec.de>");
1539 MODULE_DESCRIPTION("RK808/RK818 PMIC driver");
1540