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mei: me: add cannon point device ids
[linux/fpc-iii.git] / drivers / pinctrl / pinctrl-rockchip.c
blob2ba17548ad5b5132789fb3b1ed15a89fbf3c4e6a
1 /*
2 * Pinctrl driver for Rockchip SoCs
3 *
4 * Copyright (c) 2013 MundoReader S.L.
5 * Author: Heiko Stuebner <heiko@sntech.de>
6 *
7 * With some ideas taken from pinctrl-samsung:
8 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
9 * http://www.samsung.com
10 * Copyright (c) 2012 Linaro Ltd
11 * http://www.linaro.org
12 *
13 * and pinctrl-at91:
14 * Copyright (C) 2011-2012 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
15 *
16 * This program is free software; you can redistribute it and/or modify
17 * it under the terms of the GNU General Public License version 2 as published
18 * by the Free Software Foundation.
19 *
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
24 */
25
26 #include <linux/init.h>
27 #include <linux/platform_device.h>
28 #include <linux/io.h>
29 #include <linux/bitops.h>
30 #include <linux/gpio.h>
31 #include <linux/of_address.h>
32 #include <linux/of_irq.h>
33 #include <linux/pinctrl/machine.h>
34 #include <linux/pinctrl/pinconf.h>
35 #include <linux/pinctrl/pinctrl.h>
36 #include <linux/pinctrl/pinmux.h>
37 #include <linux/pinctrl/pinconf-generic.h>
38 #include <linux/irqchip/chained_irq.h>
39 #include <linux/clk.h>
40 #include <linux/regmap.h>
41 #include <linux/mfd/syscon.h>
42 #include <dt-bindings/pinctrl/rockchip.h>
43
44 #include "core.h"
45 #include "pinconf.h"
46
47 /* GPIO control registers */
48 #define GPIO_SWPORT_DR 0x00
49 #define GPIO_SWPORT_DDR 0x04
50 #define GPIO_INTEN 0x30
51 #define GPIO_INTMASK 0x34
52 #define GPIO_INTTYPE_LEVEL 0x38
53 #define GPIO_INT_POLARITY 0x3c
54 #define GPIO_INT_STATUS 0x40
55 #define GPIO_INT_RAWSTATUS 0x44
56 #define GPIO_DEBOUNCE 0x48
57 #define GPIO_PORTS_EOI 0x4c
58 #define GPIO_EXT_PORT 0x50
59 #define GPIO_LS_SYNC 0x60
60
61 enum rockchip_pinctrl_type {
62 RV1108,
63 RK2928,
64 RK3066B,
65 RK3128,
66 RK3188,
67 RK3288,
68 RK3368,
69 RK3399,
70 };
71
72 /**
73 * Encode variants of iomux registers into a type variable
74 */
75 #define IOMUX_GPIO_ONLY BIT(0)
76 #define IOMUX_WIDTH_4BIT BIT(1)
77 #define IOMUX_SOURCE_PMU BIT(2)
78 #define IOMUX_UNROUTED BIT(3)
79 #define IOMUX_WIDTH_3BIT BIT(4)
80
81 /**
82 * @type: iomux variant using IOMUX_* constants
83 * @offset: if initialized to -1 it will be autocalculated, by specifying
84 * an initial offset value the relevant source offset can be reset
85 * to a new value for autocalculating the following iomux registers.
86 */
87 struct rockchip_iomux {
88 int type;
89 int offset;
90 };
91
92 /**
93 * enum type index corresponding to rockchip_perpin_drv_list arrays index.
94 */
95 enum rockchip_pin_drv_type {
96 DRV_TYPE_IO_DEFAULT = 0,
97 DRV_TYPE_IO_1V8_OR_3V0,
98 DRV_TYPE_IO_1V8_ONLY,
99 DRV_TYPE_IO_1V8_3V0_AUTO,
100 DRV_TYPE_IO_3V3_ONLY,
101 DRV_TYPE_MAX
102 };
103
104 /**
105 * enum type index corresponding to rockchip_pull_list arrays index.
106 */
107 enum rockchip_pin_pull_type {
108 PULL_TYPE_IO_DEFAULT = 0,
109 PULL_TYPE_IO_1V8_ONLY,
110 PULL_TYPE_MAX
111 };
112
113 /**
114 * @drv_type: drive strength variant using rockchip_perpin_drv_type
115 * @offset: if initialized to -1 it will be autocalculated, by specifying
116 * an initial offset value the relevant source offset can be reset
117 * to a new value for autocalculating the following drive strength
118 * registers. if used chips own cal_drv func instead to calculate
119 * registers offset, the variant could be ignored.
120 */
121 struct rockchip_drv {
122 enum rockchip_pin_drv_type drv_type;
123 int offset;
124 };
125
126 /**
127 * @reg_base: register base of the gpio bank
128 * @reg_pull: optional separate register for additional pull settings
129 * @clk: clock of the gpio bank
130 * @irq: interrupt of the gpio bank
131 * @saved_masks: Saved content of GPIO_INTEN at suspend time.
132 * @pin_base: first pin number
133 * @nr_pins: number of pins in this bank
134 * @name: name of the bank
135 * @bank_num: number of the bank, to account for holes
136 * @iomux: array describing the 4 iomux sources of the bank
137 * @drv: array describing the 4 drive strength sources of the bank
138 * @pull_type: array describing the 4 pull type sources of the bank
139 * @valid: are all necessary informations present
140 * @of_node: dt node of this bank
141 * @drvdata: common pinctrl basedata
142 * @domain: irqdomain of the gpio bank
143 * @gpio_chip: gpiolib chip
144 * @grange: gpio range
145 * @slock: spinlock for the gpio bank
146 * @route_mask: bits describing the routing pins of per bank
147 */
148 struct rockchip_pin_bank {
149 void __iomem *reg_base;
150 struct regmap *regmap_pull;
151 struct clk *clk;
152 int irq;
153 u32 saved_masks;
154 u32 pin_base;
155 u8 nr_pins;
156 char *name;
157 u8 bank_num;
158 struct rockchip_iomux iomux[4];
159 struct rockchip_drv drv[4];
160 enum rockchip_pin_pull_type pull_type[4];
161 bool valid;
162 struct device_node *of_node;
163 struct rockchip_pinctrl *drvdata;
164 struct irq_domain *domain;
165 struct gpio_chip gpio_chip;
166 struct pinctrl_gpio_range grange;
167 raw_spinlock_t slock;
168 u32 toggle_edge_mode;
169 u32 recalced_mask;
170 u32 route_mask;
171 };
172
173 #define PIN_BANK(id, pins, label) \
174 { \
175 .bank_num = id, \
176 .nr_pins = pins, \
177 .name = label, \
178 .iomux = { \
179 { .offset = -1 }, \
180 { .offset = -1 }, \
181 { .offset = -1 }, \
182 { .offset = -1 }, \
183 }, \
184 }
185
186 #define PIN_BANK_IOMUX_FLAGS(id, pins, label, iom0, iom1, iom2, iom3) \
187 { \
188 .bank_num = id, \
189 .nr_pins = pins, \
190 .name = label, \
191 .iomux = { \
192 { .type = iom0, .offset = -1 }, \
193 { .type = iom1, .offset = -1 }, \
194 { .type = iom2, .offset = -1 }, \
195 { .type = iom3, .offset = -1 }, \
196 }, \
197 }
198
199 #define PIN_BANK_DRV_FLAGS(id, pins, label, type0, type1, type2, type3) \
200 { \
201 .bank_num = id, \
202 .nr_pins = pins, \
203 .name = label, \
204 .iomux = { \
205 { .offset = -1 }, \
206 { .offset = -1 }, \
207 { .offset = -1 }, \
208 { .offset = -1 }, \
209 }, \
210 .drv = { \
211 { .drv_type = type0, .offset = -1 }, \
212 { .drv_type = type1, .offset = -1 }, \
213 { .drv_type = type2, .offset = -1 }, \
214 { .drv_type = type3, .offset = -1 }, \
215 }, \
216 }
217
218 #define PIN_BANK_DRV_FLAGS_PULL_FLAGS(id, pins, label, drv0, drv1, \
219 drv2, drv3, pull0, pull1, \
220 pull2, pull3) \
221 { \
222 .bank_num = id, \
223 .nr_pins = pins, \
224 .name = label, \
225 .iomux = { \
226 { .offset = -1 }, \
227 { .offset = -1 }, \
228 { .offset = -1 }, \
229 { .offset = -1 }, \
230 }, \
231 .drv = { \
232 { .drv_type = drv0, .offset = -1 }, \
233 { .drv_type = drv1, .offset = -1 }, \
234 { .drv_type = drv2, .offset = -1 }, \
235 { .drv_type = drv3, .offset = -1 }, \
236 }, \
237 .pull_type[0] = pull0, \
238 .pull_type[1] = pull1, \
239 .pull_type[2] = pull2, \
240 .pull_type[3] = pull3, \
241 }
242
243 #define PIN_BANK_IOMUX_DRV_FLAGS_OFFSET(id, pins, label, iom0, iom1, \
244 iom2, iom3, drv0, drv1, drv2, \
245 drv3, offset0, offset1, \
246 offset2, offset3) \
247 { \
248 .bank_num = id, \
249 .nr_pins = pins, \
250 .name = label, \
251 .iomux = { \
252 { .type = iom0, .offset = -1 }, \
253 { .type = iom1, .offset = -1 }, \
254 { .type = iom2, .offset = -1 }, \
255 { .type = iom3, .offset = -1 }, \
256 }, \
257 .drv = { \
258 { .drv_type = drv0, .offset = offset0 }, \
259 { .drv_type = drv1, .offset = offset1 }, \
260 { .drv_type = drv2, .offset = offset2 }, \
261 { .drv_type = drv3, .offset = offset3 }, \
262 }, \
263 }
264
265 #define PIN_BANK_IOMUX_FLAGS_DRV_FLAGS_OFFSET_PULL_FLAGS(id, pins, \
266 label, iom0, iom1, iom2, \
267 iom3, drv0, drv1, drv2, \
268 drv3, offset0, offset1, \
269 offset2, offset3, pull0, \
270 pull1, pull2, pull3) \
271 { \
272 .bank_num = id, \
273 .nr_pins = pins, \
274 .name = label, \
275 .iomux = { \
276 { .type = iom0, .offset = -1 }, \
277 { .type = iom1, .offset = -1 }, \
278 { .type = iom2, .offset = -1 }, \
279 { .type = iom3, .offset = -1 }, \
280 }, \
281 .drv = { \
282 { .drv_type = drv0, .offset = offset0 }, \
283 { .drv_type = drv1, .offset = offset1 }, \
284 { .drv_type = drv2, .offset = offset2 }, \
285 { .drv_type = drv3, .offset = offset3 }, \
286 }, \
287 .pull_type[0] = pull0, \
288 .pull_type[1] = pull1, \
289 .pull_type[2] = pull2, \
290 .pull_type[3] = pull3, \
291 }
292
293 /**
294 * struct rockchip_mux_recalced_data: represent a pin iomux data.
295 * @num: bank number.
296 * @pin: pin number.
297 * @bit: index at register.
298 * @reg: register offset.
299 * @mask: mask bit
300 */
301 struct rockchip_mux_recalced_data {
302 u8 num;
303 u8 pin;
304 u32 reg;
305 u8 bit;
306 u8 mask;
307 };
308
309 /**
310 * struct rockchip_mux_recalced_data: represent a pin iomux data.
311 * @bank_num: bank number.
312 * @pin: index at register or used to calc index.
313 * @func: the min pin.
314 * @route_offset: the max pin.
315 * @route_val: the register offset.
316 */
317 struct rockchip_mux_route_data {
318 u8 bank_num;
319 u8 pin;
320 u8 func;
321 u32 route_offset;
322 u32 route_val;
323 };
324
325 /**
326 */
327 struct rockchip_pin_ctrl {
328 struct rockchip_pin_bank *pin_banks;
329 u32 nr_banks;
330 u32 nr_pins;
331 char *label;
332 enum rockchip_pinctrl_type type;
333 int grf_mux_offset;
334 int pmu_mux_offset;
335 int grf_drv_offset;
336 int pmu_drv_offset;
337 struct rockchip_mux_recalced_data *iomux_recalced;
338 u32 niomux_recalced;
339 struct rockchip_mux_route_data *iomux_routes;
340 u32 niomux_routes;
341
342 void (*pull_calc_reg)(struct rockchip_pin_bank *bank,
343 int pin_num, struct regmap **regmap,
344 int *reg, u8 *bit);
345 void (*drv_calc_reg)(struct rockchip_pin_bank *bank,
346 int pin_num, struct regmap **regmap,
347 int *reg, u8 *bit);
348 int (*schmitt_calc_reg)(struct rockchip_pin_bank *bank,
349 int pin_num, struct regmap **regmap,
350 int *reg, u8 *bit);
351 };
352
353 struct rockchip_pin_config {
354 unsigned int func;
355 unsigned long *configs;
356 unsigned int nconfigs;
357 };
358
359 /**
360 * struct rockchip_pin_group: represent group of pins of a pinmux function.
361 * @name: name of the pin group, used to lookup the group.
362 * @pins: the pins included in this group.
363 * @npins: number of pins included in this group.
364 * @func: the mux function number to be programmed when selected.
365 * @configs: the config values to be set for each pin
366 * @nconfigs: number of configs for each pin
367 */
368 struct rockchip_pin_group {
369 const char *name;
370 unsigned int npins;
371 unsigned int *pins;
372 struct rockchip_pin_config *data;
373 };
374
375 /**
376 * struct rockchip_pmx_func: represent a pin function.
377 * @name: name of the pin function, used to lookup the function.
378 * @groups: one or more names of pin groups that provide this function.
379 * @num_groups: number of groups included in @groups.
380 */
381 struct rockchip_pmx_func {
382 const char *name;
383 const char **groups;
384 u8 ngroups;
385 };
386
387 struct rockchip_pinctrl {
388 struct regmap *regmap_base;
389 int reg_size;
390 struct regmap *regmap_pull;
391 struct regmap *regmap_pmu;
392 struct device *dev;
393 struct rockchip_pin_ctrl *ctrl;
394 struct pinctrl_desc pctl;
395 struct pinctrl_dev *pctl_dev;
396 struct rockchip_pin_group *groups;
397 unsigned int ngroups;
398 struct rockchip_pmx_func *functions;
399 unsigned int nfunctions;
400 };
401
402 static struct regmap_config rockchip_regmap_config = {
403 .reg_bits = 32,
404 .val_bits = 32,
405 .reg_stride = 4,
406 };
407
408 static inline const struct rockchip_pin_group *pinctrl_name_to_group(
409 const struct rockchip_pinctrl *info,
410 const char *name)
411 {
412 int i;
413
414 for (i = 0; i < info->ngroups; i++) {
415 if (!strcmp(info->groups[i].name, name))
416 return &info->groups[i];
417 }
418
419 return NULL;
420 }
421
422 /*
423 * given a pin number that is local to a pin controller, find out the pin bank
424 * and the register base of the pin bank.
425 */
426 static struct rockchip_pin_bank *pin_to_bank(struct rockchip_pinctrl *info,
427 unsigned pin)
428 {
429 struct rockchip_pin_bank *b = info->ctrl->pin_banks;
430
431 while (pin >= (b->pin_base + b->nr_pins))
432 b++;
433
434 return b;
435 }
436
437 static struct rockchip_pin_bank *bank_num_to_bank(
438 struct rockchip_pinctrl *info,
439 unsigned num)
440 {
441 struct rockchip_pin_bank *b = info->ctrl->pin_banks;
442 int i;
443
444 for (i = 0; i < info->ctrl->nr_banks; i++, b++) {
445 if (b->bank_num == num)
446 return b;
447 }
448
449 return ERR_PTR(-EINVAL);
450 }
451
452 /*
453 * Pinctrl_ops handling
454 */
455
456 static int rockchip_get_groups_count(struct pinctrl_dev *pctldev)
457 {
458 struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
459
460 return info->ngroups;
461 }
462
463 static const char *rockchip_get_group_name(struct pinctrl_dev *pctldev,
464 unsigned selector)
465 {
466 struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
467
468 return info->groups[selector].name;
469 }
470
471 static int rockchip_get_group_pins(struct pinctrl_dev *pctldev,
472 unsigned selector, const unsigned **pins,
473 unsigned *npins)
474 {
475 struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
476
477 if (selector >= info->ngroups)
478 return -EINVAL;
479
480 *pins = info->groups[selector].pins;
481 *npins = info->groups[selector].npins;
482
483 return 0;
484 }
485
486 static int rockchip_dt_node_to_map(struct pinctrl_dev *pctldev,
487 struct device_node *np,
488 struct pinctrl_map **map, unsigned *num_maps)
489 {
490 struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
491 const struct rockchip_pin_group *grp;
492 struct pinctrl_map *new_map;
493 struct device_node *parent;
494 int map_num = 1;
495 int i;
496
497 /*
498 * first find the group of this node and check if we need to create
499 * config maps for pins
500 */
501 grp = pinctrl_name_to_group(info, np->name);
502 if (!grp) {
503 dev_err(info->dev, "unable to find group for node %s\n",
504 np->name);
505 return -EINVAL;
506 }
507
508 map_num += grp->npins;
509 new_map = devm_kzalloc(pctldev->dev, sizeof(*new_map) * map_num,
510 GFP_KERNEL);
511 if (!new_map)
512 return -ENOMEM;
513
514 *map = new_map;
515 *num_maps = map_num;
516
517 /* create mux map */
518 parent = of_get_parent(np);
519 if (!parent) {
520 devm_kfree(pctldev->dev, new_map);
521 return -EINVAL;
522 }
523 new_map[0].type = PIN_MAP_TYPE_MUX_GROUP;
524 new_map[0].data.mux.function = parent->name;
525 new_map[0].data.mux.group = np->name;
526 of_node_put(parent);
527
528 /* create config map */
529 new_map++;
530 for (i = 0; i < grp->npins; i++) {
531 new_map[i].type = PIN_MAP_TYPE_CONFIGS_PIN;
532 new_map[i].data.configs.group_or_pin =
533 pin_get_name(pctldev, grp->pins[i]);
534 new_map[i].data.configs.configs = grp->data[i].configs;
535 new_map[i].data.configs.num_configs = grp->data[i].nconfigs;
536 }
537
538 dev_dbg(pctldev->dev, "maps: function %s group %s num %d\n",
539 (*map)->data.mux.function, (*map)->data.mux.group, map_num);
540
541 return 0;
542 }
543
544 static void rockchip_dt_free_map(struct pinctrl_dev *pctldev,
545 struct pinctrl_map *map, unsigned num_maps)
546 {
547 }
548
549 static const struct pinctrl_ops rockchip_pctrl_ops = {
550 .get_groups_count = rockchip_get_groups_count,
551 .get_group_name = rockchip_get_group_name,
552 .get_group_pins = rockchip_get_group_pins,
553 .dt_node_to_map = rockchip_dt_node_to_map,
554 .dt_free_map = rockchip_dt_free_map,
555 };
556
557 /*
558 * Hardware access
559 */
560
561 static struct rockchip_mux_recalced_data rv1108_mux_recalced_data[] = {
562 {
563 .num = 1,
564 .pin = 0,
565 .reg = 0x418,
566 .bit = 0,
567 .mask = 0x3
568 }, {
569 .num = 1,
570 .pin = 1,
571 .reg = 0x418,
572 .bit = 2,
573 .mask = 0x3
574 }, {
575 .num = 1,
576 .pin = 2,
577 .reg = 0x418,
578 .bit = 4,
579 .mask = 0x3
580 }, {
581 .num = 1,
582 .pin = 3,
583 .reg = 0x418,
584 .bit = 6,
585 .mask = 0x3
586 }, {
587 .num = 1,
588 .pin = 4,
589 .reg = 0x418,
590 .bit = 8,
591 .mask = 0x3
592 }, {
593 .num = 1,
594 .pin = 5,
595 .reg = 0x418,
596 .bit = 10,
597 .mask = 0x3
598 }, {
599 .num = 1,
600 .pin = 6,
601 .reg = 0x418,
602 .bit = 12,
603 .mask = 0x3
604 }, {
605 .num = 1,
606 .pin = 7,
607 .reg = 0x418,
608 .bit = 14,
609 .mask = 0x3
610 }, {
611 .num = 1,
612 .pin = 8,
613 .reg = 0x41c,
614 .bit = 0,
615 .mask = 0x3
616 }, {
617 .num = 1,
618 .pin = 9,
619 .reg = 0x41c,
620 .bit = 2,
621 .mask = 0x3
622 },
623 };
624
625 static struct rockchip_mux_recalced_data rk3128_mux_recalced_data[] = {
626 {
627 .num = 2,
628 .pin = 20,
629 .reg = 0xe8,
630 .bit = 0,
631 .mask = 0x7
632 }, {
633 .num = 2,
634 .pin = 21,
635 .reg = 0xe8,
636 .bit = 4,
637 .mask = 0x7
638 }, {
639 .num = 2,
640 .pin = 22,
641 .reg = 0xe8,
642 .bit = 8,
643 .mask = 0x7
644 }, {
645 .num = 2,
646 .pin = 23,
647 .reg = 0xe8,
648 .bit = 12,
649 .mask = 0x7
650 }, {
651 .num = 2,
652 .pin = 24,
653 .reg = 0xd4,
654 .bit = 12,
655 .mask = 0x7
656 },
657 };
658
659 static struct rockchip_mux_recalced_data rk3328_mux_recalced_data[] = {
660 {
661 .num = 2,
662 .pin = 12,
663 .reg = 0x24,
664 .bit = 8,
665 .mask = 0x3
666 }, {
667 .num = 2,
668 .pin = 15,
669 .reg = 0x28,
670 .bit = 0,
671 .mask = 0x7
672 }, {
673 .num = 2,
674 .pin = 23,
675 .reg = 0x30,
676 .bit = 14,
677 .mask = 0x3
678 },
679 };
680
681 static void rockchip_get_recalced_mux(struct rockchip_pin_bank *bank, int pin,
682 int *reg, u8 *bit, int *mask)
683 {
684 struct rockchip_pinctrl *info = bank->drvdata;
685 struct rockchip_pin_ctrl *ctrl = info->ctrl;
686 struct rockchip_mux_recalced_data *data;
687 int i;
688
689 for (i = 0; i < ctrl->niomux_recalced; i++) {
690 data = &ctrl->iomux_recalced[i];
691 if (data->num == bank->bank_num &&
692 data->pin == pin)
693 break;
694 }
695
696 if (i >= ctrl->niomux_recalced)
697 return;
698
699 *reg = data->reg;
700 *mask = data->mask;
701 *bit = data->bit;
702 }
703
704 static struct rockchip_mux_route_data rk3128_mux_route_data[] = {
705 {
706 /* spi-0 */
707 .bank_num = 1,
708 .pin = 10,
709 .func = 1,
710 .route_offset = 0x144,
711 .route_val = BIT(16 + 3) | BIT(16 + 4),
712 }, {
713 /* spi-1 */
714 .bank_num = 1,
715 .pin = 27,
716 .func = 3,
717 .route_offset = 0x144,
718 .route_val = BIT(16 + 3) | BIT(16 + 4) | BIT(3),
719 }, {
720 /* spi-2 */
721 .bank_num = 0,
722 .pin = 13,
723 .func = 2,
724 .route_offset = 0x144,
725 .route_val = BIT(16 + 3) | BIT(16 + 4) | BIT(4),
726 }, {
727 /* i2s-0 */
728 .bank_num = 1,
729 .pin = 5,
730 .func = 1,
731 .route_offset = 0x144,
732 .route_val = BIT(16 + 5),
733 }, {
734 /* i2s-1 */
735 .bank_num = 0,
736 .pin = 14,
737 .func = 1,
738 .route_offset = 0x144,
739 .route_val = BIT(16 + 5) | BIT(5),
740 }, {
741 /* emmc-0 */
742 .bank_num = 1,
743 .pin = 22,
744 .func = 2,
745 .route_offset = 0x144,
746 .route_val = BIT(16 + 6),
747 }, {
748 /* emmc-1 */
749 .bank_num = 2,
750 .pin = 4,
751 .func = 2,
752 .route_offset = 0x144,
753 .route_val = BIT(16 + 6) | BIT(6),
754 },
755 };
756
757 static struct rockchip_mux_route_data rk3228_mux_route_data[] = {
758 {
759 /* pwm0-0 */
760 .bank_num = 0,
761 .pin = 26,
762 .func = 1,
763 .route_offset = 0x50,
764 .route_val = BIT(16),
765 }, {
766 /* pwm0-1 */
767 .bank_num = 3,
768 .pin = 21,
769 .func = 1,
770 .route_offset = 0x50,
771 .route_val = BIT(16) | BIT(0),
772 }, {
773 /* pwm1-0 */
774 .bank_num = 0,
775 .pin = 27,
776 .func = 1,
777 .route_offset = 0x50,
778 .route_val = BIT(16 + 1),
779 }, {
780 /* pwm1-1 */
781 .bank_num = 0,
782 .pin = 30,
783 .func = 2,
784 .route_offset = 0x50,
785 .route_val = BIT(16 + 1) | BIT(1),
786 }, {
787 /* pwm2-0 */
788 .bank_num = 0,
789 .pin = 28,
790 .func = 1,
791 .route_offset = 0x50,
792 .route_val = BIT(16 + 2),
793 }, {
794 /* pwm2-1 */
795 .bank_num = 1,
796 .pin = 12,
797 .func = 2,
798 .route_offset = 0x50,
799 .route_val = BIT(16 + 2) | BIT(2),
800 }, {
801 /* pwm3-0 */
802 .bank_num = 3,
803 .pin = 26,
804 .func = 1,
805 .route_offset = 0x50,
806 .route_val = BIT(16 + 3),
807 }, {
808 /* pwm3-1 */
809 .bank_num = 1,
810 .pin = 11,
811 .func = 2,
812 .route_offset = 0x50,
813 .route_val = BIT(16 + 3) | BIT(3),
814 }, {
815 /* sdio-0_d0 */
816 .bank_num = 1,
817 .pin = 1,
818 .func = 1,
819 .route_offset = 0x50,
820 .route_val = BIT(16 + 4),
821 }, {
822 /* sdio-1_d0 */
823 .bank_num = 3,
824 .pin = 2,
825 .func = 1,
826 .route_offset = 0x50,
827 .route_val = BIT(16 + 4) | BIT(4),
828 }, {
829 /* spi-0_rx */
830 .bank_num = 0,
831 .pin = 13,
832 .func = 2,
833 .route_offset = 0x50,
834 .route_val = BIT(16 + 5),
835 }, {
836 /* spi-1_rx */
837 .bank_num = 2,
838 .pin = 0,
839 .func = 2,
840 .route_offset = 0x50,
841 .route_val = BIT(16 + 5) | BIT(5),
842 }, {
843 /* emmc-0_cmd */
844 .bank_num = 1,
845 .pin = 22,
846 .func = 2,
847 .route_offset = 0x50,
848 .route_val = BIT(16 + 7),
849 }, {
850 /* emmc-1_cmd */
851 .bank_num = 2,
852 .pin = 4,
853 .func = 2,
854 .route_offset = 0x50,
855 .route_val = BIT(16 + 7) | BIT(7),
856 }, {
857 /* uart2-0_rx */
858 .bank_num = 1,
859 .pin = 19,
860 .func = 2,
861 .route_offset = 0x50,
862 .route_val = BIT(16 + 8),
863 }, {
864 /* uart2-1_rx */
865 .bank_num = 1,
866 .pin = 10,
867 .func = 2,
868 .route_offset = 0x50,
869 .route_val = BIT(16 + 8) | BIT(8),
870 }, {
871 /* uart1-0_rx */
872 .bank_num = 1,
873 .pin = 10,
874 .func = 1,
875 .route_offset = 0x50,
876 .route_val = BIT(16 + 11),
877 }, {
878 /* uart1-1_rx */
879 .bank_num = 3,
880 .pin = 13,
881 .func = 1,
882 .route_offset = 0x50,
883 .route_val = BIT(16 + 11) | BIT(11),
884 },
885 };
886
887 static struct rockchip_mux_route_data rk3288_mux_route_data[] = {
888 {
889 /* edphdmi_cecinoutt1 */
890 .bank_num = 7,
891 .pin = 16,
892 .func = 2,
893 .route_offset = 0x264,
894 .route_val = BIT(16 + 12) | BIT(12),
895 }, {
896 /* edphdmi_cecinout */
897 .bank_num = 7,
898 .pin = 23,
899 .func = 4,
900 .route_offset = 0x264,
901 .route_val = BIT(16 + 12),
902 },
903 };
904
905 static struct rockchip_mux_route_data rk3328_mux_route_data[] = {
906 {
907 /* uart2dbg_rxm0 */
908 .bank_num = 1,
909 .pin = 1,
910 .func = 2,
911 .route_offset = 0x50,
912 .route_val = BIT(16) | BIT(16 + 1),
913 }, {
914 /* uart2dbg_rxm1 */
915 .bank_num = 2,
916 .pin = 1,
917 .func = 1,
918 .route_offset = 0x50,
919 .route_val = BIT(16) | BIT(16 + 1) | BIT(0),
920 }, {
921 /* gmac-m1_rxd0 */
922 .bank_num = 1,
923 .pin = 11,
924 .func = 2,
925 .route_offset = 0x50,
926 .route_val = BIT(16 + 2) | BIT(2),
927 }, {
928 /* gmac-m1-optimized_rxd3 */
929 .bank_num = 1,
930 .pin = 14,
931 .func = 2,
932 .route_offset = 0x50,
933 .route_val = BIT(16 + 10) | BIT(10),
934 }, {
935 /* pdm_sdi0m0 */
936 .bank_num = 2,
937 .pin = 19,
938 .func = 2,
939 .route_offset = 0x50,
940 .route_val = BIT(16 + 3),
941 }, {
942 /* pdm_sdi0m1 */
943 .bank_num = 1,
944 .pin = 23,
945 .func = 3,
946 .route_offset = 0x50,
947 .route_val = BIT(16 + 3) | BIT(3),
948 }, {
949 /* spi_rxdm2 */
950 .bank_num = 3,
951 .pin = 2,
952 .func = 4,
953 .route_offset = 0x50,
954 .route_val = BIT(16 + 4) | BIT(16 + 5) | BIT(5),
955 }, {
956 /* i2s2_sdim0 */
957 .bank_num = 1,
958 .pin = 24,
959 .func = 1,
960 .route_offset = 0x50,
961 .route_val = BIT(16 + 6),
962 }, {
963 /* i2s2_sdim1 */
964 .bank_num = 3,
965 .pin = 2,
966 .func = 6,
967 .route_offset = 0x50,
968 .route_val = BIT(16 + 6) | BIT(6),
969 }, {
970 /* card_iom1 */
971 .bank_num = 2,
972 .pin = 22,
973 .func = 3,
974 .route_offset = 0x50,
975 .route_val = BIT(16 + 7) | BIT(7),
976 }, {
977 /* tsp_d5m1 */
978 .bank_num = 2,
979 .pin = 16,
980 .func = 3,
981 .route_offset = 0x50,
982 .route_val = BIT(16 + 8) | BIT(8),
983 }, {
984 /* cif_data5m1 */
985 .bank_num = 2,
986 .pin = 16,
987 .func = 4,
988 .route_offset = 0x50,
989 .route_val = BIT(16 + 9) | BIT(9),
990 },
991 };
992
993 static struct rockchip_mux_route_data rk3399_mux_route_data[] = {
994 {
995 /* uart2dbga_rx */
996 .bank_num = 4,
997 .pin = 8,
998 .func = 2,
999 .route_offset = 0xe21c,
1000 .route_val = BIT(16 + 10) | BIT(16 + 11),
1001 }, {
1002 /* uart2dbgb_rx */
1003 .bank_num = 4,
1004 .pin = 16,
1005 .func = 2,
1006 .route_offset = 0xe21c,
1007 .route_val = BIT(16 + 10) | BIT(16 + 11) | BIT(10),
1008 }, {
1009 /* uart2dbgc_rx */
1010 .bank_num = 4,
1011 .pin = 19,
1012 .func = 1,
1013 .route_offset = 0xe21c,
1014 .route_val = BIT(16 + 10) | BIT(16 + 11) | BIT(11),
1015 }, {
1016 /* pcie_clkreqn */
1017 .bank_num = 2,
1018 .pin = 26,
1019 .func = 2,
1020 .route_offset = 0xe21c,
1021 .route_val = BIT(16 + 14),
1022 }, {
1023 /* pcie_clkreqnb */
1024 .bank_num = 4,
1025 .pin = 24,
1026 .func = 1,
1027 .route_offset = 0xe21c,
1028 .route_val = BIT(16 + 14) | BIT(14),
1029 },
1030 };
1031
1032 static bool rockchip_get_mux_route(struct rockchip_pin_bank *bank, int pin,
1033 int mux, u32 *reg, u32 *value)
1034 {
1035 struct rockchip_pinctrl *info = bank->drvdata;
1036 struct rockchip_pin_ctrl *ctrl = info->ctrl;
1037 struct rockchip_mux_route_data *data;
1038 int i;
1039
1040 for (i = 0; i < ctrl->niomux_routes; i++) {
1041 data = &ctrl->iomux_routes[i];
1042 if ((data->bank_num == bank->bank_num) &&
1043 (data->pin == pin) && (data->func == mux))
1044 break;
1045 }
1046
1047 if (i >= ctrl->niomux_routes)
1048 return false;
1049
1050 *reg = data->route_offset;
1051 *value = data->route_val;
1052
1053 return true;
1054 }
1055
1056 static int rockchip_get_mux(struct rockchip_pin_bank *bank, int pin)
1057 {
1058 struct rockchip_pinctrl *info = bank->drvdata;
1059 int iomux_num = (pin / 8);
1060 struct regmap *regmap;
1061 unsigned int val;
1062 int reg, ret, mask, mux_type;
1063 u8 bit;
1064
1065 if (iomux_num > 3)
1066 return -EINVAL;
1067
1068 if (bank->iomux[iomux_num].type & IOMUX_UNROUTED) {
1069 dev_err(info->dev, "pin %d is unrouted\n", pin);
1070 return -EINVAL;
1071 }
1072
1073 if (bank->iomux[iomux_num].type & IOMUX_GPIO_ONLY)
1074 return RK_FUNC_GPIO;
1075
1076 regmap = (bank->iomux[iomux_num].type & IOMUX_SOURCE_PMU)
1077 ? info->regmap_pmu : info->regmap_base;
1078
1079 /* get basic quadrupel of mux registers and the correct reg inside */
1080 mux_type = bank->iomux[iomux_num].type;
1081 reg = bank->iomux[iomux_num].offset;
1082 if (mux_type & IOMUX_WIDTH_4BIT) {
1083 if ((pin % 8) >= 4)
1084 reg += 0x4;
1085 bit = (pin % 4) * 4;
1086 mask = 0xf;
1087 } else if (mux_type & IOMUX_WIDTH_3BIT) {
1088 if ((pin % 8) >= 5)
1089 reg += 0x4;
1090 bit = (pin % 8 % 5) * 3;
1091 mask = 0x7;
1092 } else {
1093 bit = (pin % 8) * 2;
1094 mask = 0x3;
1095 }
1096
1097 if (bank->recalced_mask & BIT(pin))
1098 rockchip_get_recalced_mux(bank, pin, &reg, &bit, &mask);
1099
1100 ret = regmap_read(regmap, reg, &val);
1101 if (ret)
1102 return ret;
1103
1104 return ((val >> bit) & mask);
1105 }
1106
1107 static int rockchip_verify_mux(struct rockchip_pin_bank *bank,
1108 int pin, int mux)
1109 {
1110 struct rockchip_pinctrl *info = bank->drvdata;
1111 int iomux_num = (pin / 8);
1112
1113 if (iomux_num > 3)
1114 return -EINVAL;
1115
1116 if (bank->iomux[iomux_num].type & IOMUX_UNROUTED) {
1117 dev_err(info->dev, "pin %d is unrouted\n", pin);
1118 return -EINVAL;
1119 }
1120
1121 if (bank->iomux[iomux_num].type & IOMUX_GPIO_ONLY) {
1122 if (mux != RK_FUNC_GPIO) {
1123 dev_err(info->dev,
1124 "pin %d only supports a gpio mux\n", pin);
1125 return -ENOTSUPP;
1126 }
1127 }
1128
1129 return 0;
1130 }
1131
1132 /*
1133 * Set a new mux function for a pin.
1134 *
1135 * The register is divided into the upper and lower 16 bit. When changing
1136 * a value, the previous register value is not read and changed. Instead
1137 * it seems the changed bits are marked in the upper 16 bit, while the
1138 * changed value gets set in the same offset in the lower 16 bit.
1139 * All pin settings seem to be 2 bit wide in both the upper and lower
1140 * parts.
1141 * @bank: pin bank to change
1142 * @pin: pin to change
1143 * @mux: new mux function to set
1144 */
1145 static int rockchip_set_mux(struct rockchip_pin_bank *bank, int pin, int mux)
1146 {
1147 struct rockchip_pinctrl *info = bank->drvdata;
1148 int iomux_num = (pin / 8);
1149 struct regmap *regmap;
1150 int reg, ret, mask, mux_type;
1151 u8 bit;
1152 u32 data, rmask, route_reg, route_val;
1153
1154 ret = rockchip_verify_mux(bank, pin, mux);
1155 if (ret < 0)
1156 return ret;
1157
1158 if (bank->iomux[iomux_num].type & IOMUX_GPIO_ONLY)
1159 return 0;
1160
1161 dev_dbg(info->dev, "setting mux of GPIO%d-%d to %d\n",
1162 bank->bank_num, pin, mux);
1163
1164 regmap = (bank->iomux[iomux_num].type & IOMUX_SOURCE_PMU)
1165 ? info->regmap_pmu : info->regmap_base;
1166
1167 /* get basic quadrupel of mux registers and the correct reg inside */
1168 mux_type = bank->iomux[iomux_num].type;
1169 reg = bank->iomux[iomux_num].offset;
1170 if (mux_type & IOMUX_WIDTH_4BIT) {
1171 if ((pin % 8) >= 4)
1172 reg += 0x4;
1173 bit = (pin % 4) * 4;
1174 mask = 0xf;
1175 } else if (mux_type & IOMUX_WIDTH_3BIT) {
1176 if ((pin % 8) >= 5)
1177 reg += 0x4;
1178 bit = (pin % 8 % 5) * 3;
1179 mask = 0x7;
1180 } else {
1181 bit = (pin % 8) * 2;
1182 mask = 0x3;
1183 }
1184
1185 if (bank->recalced_mask & BIT(pin))
1186 rockchip_get_recalced_mux(bank, pin, &reg, &bit, &mask);
1187
1188 if (bank->route_mask & BIT(pin)) {
1189 if (rockchip_get_mux_route(bank, pin, mux, &route_reg,
1190 &route_val)) {
1191 ret = regmap_write(regmap, route_reg, route_val);
1192 if (ret)
1193 return ret;
1194 }
1195 }
1196
1197 data = (mask << (bit + 16));
1198 rmask = data | (data >> 16);
1199 data |= (mux & mask) << bit;
1200 ret = regmap_update_bits(regmap, reg, rmask, data);
1201
1202 return ret;
1203 }
1204
1205 #define RV1108_PULL_PMU_OFFSET 0x10
1206 #define RV1108_PULL_OFFSET 0x110
1207 #define RV1108_PULL_PINS_PER_REG 8
1208 #define RV1108_PULL_BITS_PER_PIN 2
1209 #define RV1108_PULL_BANK_STRIDE 16
1210
1211 static void rv1108_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank,
1212 int pin_num, struct regmap **regmap,
1213 int *reg, u8 *bit)
1214 {
1215 struct rockchip_pinctrl *info = bank->drvdata;
1216
1217 /* The first 24 pins of the first bank are located in PMU */
1218 if (bank->bank_num == 0) {
1219 *regmap = info->regmap_pmu;
1220 *reg = RV1108_PULL_PMU_OFFSET;
1221 } else {
1222 *reg = RV1108_PULL_OFFSET;
1223 *regmap = info->regmap_base;
1224 /* correct the offset, as we're starting with the 2nd bank */
1225 *reg -= 0x10;
1226 *reg += bank->bank_num * RV1108_PULL_BANK_STRIDE;
1227 }
1228
1229 *reg += ((pin_num / RV1108_PULL_PINS_PER_REG) * 4);
1230 *bit = (pin_num % RV1108_PULL_PINS_PER_REG);
1231 *bit *= RV1108_PULL_BITS_PER_PIN;
1232 }
1233
1234 #define RV1108_DRV_PMU_OFFSET 0x20
1235 #define RV1108_DRV_GRF_OFFSET 0x210
1236 #define RV1108_DRV_BITS_PER_PIN 2
1237 #define RV1108_DRV_PINS_PER_REG 8
1238 #define RV1108_DRV_BANK_STRIDE 16
1239
1240 static void rv1108_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank,
1241 int pin_num, struct regmap **regmap,
1242 int *reg, u8 *bit)
1243 {
1244 struct rockchip_pinctrl *info = bank->drvdata;
1245
1246 /* The first 24 pins of the first bank are located in PMU */
1247 if (bank->bank_num == 0) {
1248 *regmap = info->regmap_pmu;
1249 *reg = RV1108_DRV_PMU_OFFSET;
1250 } else {
1251 *regmap = info->regmap_base;
1252 *reg = RV1108_DRV_GRF_OFFSET;
1253
1254 /* correct the offset, as we're starting with the 2nd bank */
1255 *reg -= 0x10;
1256 *reg += bank->bank_num * RV1108_DRV_BANK_STRIDE;
1257 }
1258
1259 *reg += ((pin_num / RV1108_DRV_PINS_PER_REG) * 4);
1260 *bit = pin_num % RV1108_DRV_PINS_PER_REG;
1261 *bit *= RV1108_DRV_BITS_PER_PIN;
1262 }
1263
1264 #define RV1108_SCHMITT_PMU_OFFSET 0x30
1265 #define RV1108_SCHMITT_GRF_OFFSET 0x388
1266 #define RV1108_SCHMITT_BANK_STRIDE 8
1267 #define RV1108_SCHMITT_PINS_PER_GRF_REG 16
1268 #define RV1108_SCHMITT_PINS_PER_PMU_REG 8
1269
1270 static int rv1108_calc_schmitt_reg_and_bit(struct rockchip_pin_bank *bank,
1271 int pin_num,
1272 struct regmap **regmap,
1273 int *reg, u8 *bit)
1274 {
1275 struct rockchip_pinctrl *info = bank->drvdata;
1276 int pins_per_reg;
1277
1278 if (bank->bank_num == 0) {
1279 *regmap = info->regmap_pmu;
1280 *reg = RV1108_SCHMITT_PMU_OFFSET;
1281 pins_per_reg = RV1108_SCHMITT_PINS_PER_PMU_REG;
1282 } else {
1283 *regmap = info->regmap_base;
1284 *reg = RV1108_SCHMITT_GRF_OFFSET;
1285 pins_per_reg = RV1108_SCHMITT_PINS_PER_GRF_REG;
1286 *reg += (bank->bank_num - 1) * RV1108_SCHMITT_BANK_STRIDE;
1287 }
1288 *reg += ((pin_num / pins_per_reg) * 4);
1289 *bit = pin_num % pins_per_reg;
1290
1291 return 0;
1292 }
1293
1294 #define RK2928_PULL_OFFSET 0x118
1295 #define RK2928_PULL_PINS_PER_REG 16
1296 #define RK2928_PULL_BANK_STRIDE 8
1297
1298 static void rk2928_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank,
1299 int pin_num, struct regmap **regmap,
1300 int *reg, u8 *bit)
1301 {
1302 struct rockchip_pinctrl *info = bank->drvdata;
1303
1304 *regmap = info->regmap_base;
1305 *reg = RK2928_PULL_OFFSET;
1306 *reg += bank->bank_num * RK2928_PULL_BANK_STRIDE;
1307 *reg += (pin_num / RK2928_PULL_PINS_PER_REG) * 4;
1308
1309 *bit = pin_num % RK2928_PULL_PINS_PER_REG;
1310 };
1311
1312 #define RK3128_PULL_OFFSET 0x118
1313
1314 static void rk3128_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank,
1315 int pin_num, struct regmap **regmap,
1316 int *reg, u8 *bit)
1317 {
1318 struct rockchip_pinctrl *info = bank->drvdata;
1319
1320 *regmap = info->regmap_base;
1321 *reg = RK3128_PULL_OFFSET;
1322 *reg += bank->bank_num * RK2928_PULL_BANK_STRIDE;
1323 *reg += ((pin_num / RK2928_PULL_PINS_PER_REG) * 4);
1324
1325 *bit = pin_num % RK2928_PULL_PINS_PER_REG;
1326 }
1327
1328 #define RK3188_PULL_OFFSET 0x164
1329 #define RK3188_PULL_BITS_PER_PIN 2
1330 #define RK3188_PULL_PINS_PER_REG 8
1331 #define RK3188_PULL_BANK_STRIDE 16
1332 #define RK3188_PULL_PMU_OFFSET 0x64
1333
1334 static void rk3188_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank,
1335 int pin_num, struct regmap **regmap,
1336 int *reg, u8 *bit)
1337 {
1338 struct rockchip_pinctrl *info = bank->drvdata;
1339
1340 /* The first 12 pins of the first bank are located elsewhere */
1341 if (bank->bank_num == 0 && pin_num < 12) {
1342 *regmap = info->regmap_pmu ? info->regmap_pmu
1343 : bank->regmap_pull;
1344 *reg = info->regmap_pmu ? RK3188_PULL_PMU_OFFSET : 0;
1345 *reg += ((pin_num / RK3188_PULL_PINS_PER_REG) * 4);
1346 *bit = pin_num % RK3188_PULL_PINS_PER_REG;
1347 *bit *= RK3188_PULL_BITS_PER_PIN;
1348 } else {
1349 *regmap = info->regmap_pull ? info->regmap_pull
1350 : info->regmap_base;
1351 *reg = info->regmap_pull ? 0 : RK3188_PULL_OFFSET;
1352
1353 /* correct the offset, as it is the 2nd pull register */
1354 *reg -= 4;
1355 *reg += bank->bank_num * RK3188_PULL_BANK_STRIDE;
1356 *reg += ((pin_num / RK3188_PULL_PINS_PER_REG) * 4);
1357
1358 /*
1359 * The bits in these registers have an inverse ordering
1360 * with the lowest pin being in bits 15:14 and the highest
1361 * pin in bits 1:0
1362 */
1363 *bit = 7 - (pin_num % RK3188_PULL_PINS_PER_REG);
1364 *bit *= RK3188_PULL_BITS_PER_PIN;
1365 }
1366 }
1367
1368 #define RK3288_PULL_OFFSET 0x140
1369 static void rk3288_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank,
1370 int pin_num, struct regmap **regmap,
1371 int *reg, u8 *bit)
1372 {
1373 struct rockchip_pinctrl *info = bank->drvdata;
1374
1375 /* The first 24 pins of the first bank are located in PMU */
1376 if (bank->bank_num == 0) {
1377 *regmap = info->regmap_pmu;
1378 *reg = RK3188_PULL_PMU_OFFSET;
1379
1380 *reg += ((pin_num / RK3188_PULL_PINS_PER_REG) * 4);
1381 *bit = pin_num % RK3188_PULL_PINS_PER_REG;
1382 *bit *= RK3188_PULL_BITS_PER_PIN;
1383 } else {
1384 *regmap = info->regmap_base;
1385 *reg = RK3288_PULL_OFFSET;
1386
1387 /* correct the offset, as we're starting with the 2nd bank */
1388 *reg -= 0x10;
1389 *reg += bank->bank_num * RK3188_PULL_BANK_STRIDE;
1390 *reg += ((pin_num / RK3188_PULL_PINS_PER_REG) * 4);
1391
1392 *bit = (pin_num % RK3188_PULL_PINS_PER_REG);
1393 *bit *= RK3188_PULL_BITS_PER_PIN;
1394 }
1395 }
1396
1397 #define RK3288_DRV_PMU_OFFSET 0x70
1398 #define RK3288_DRV_GRF_OFFSET 0x1c0
1399 #define RK3288_DRV_BITS_PER_PIN 2
1400 #define RK3288_DRV_PINS_PER_REG 8
1401 #define RK3288_DRV_BANK_STRIDE 16
1402
1403 static void rk3288_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank,
1404 int pin_num, struct regmap **regmap,
1405 int *reg, u8 *bit)
1406 {
1407 struct rockchip_pinctrl *info = bank->drvdata;
1408
1409 /* The first 24 pins of the first bank are located in PMU */
1410 if (bank->bank_num == 0) {
1411 *regmap = info->regmap_pmu;
1412 *reg = RK3288_DRV_PMU_OFFSET;
1413
1414 *reg += ((pin_num / RK3288_DRV_PINS_PER_REG) * 4);
1415 *bit = pin_num % RK3288_DRV_PINS_PER_REG;
1416 *bit *= RK3288_DRV_BITS_PER_PIN;
1417 } else {
1418 *regmap = info->regmap_base;
1419 *reg = RK3288_DRV_GRF_OFFSET;
1420
1421 /* correct the offset, as we're starting with the 2nd bank */
1422 *reg -= 0x10;
1423 *reg += bank->bank_num * RK3288_DRV_BANK_STRIDE;
1424 *reg += ((pin_num / RK3288_DRV_PINS_PER_REG) * 4);
1425
1426 *bit = (pin_num % RK3288_DRV_PINS_PER_REG);
1427 *bit *= RK3288_DRV_BITS_PER_PIN;
1428 }
1429 }
1430
1431 #define RK3228_PULL_OFFSET 0x100
1432
1433 static void rk3228_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank,
1434 int pin_num, struct regmap **regmap,
1435 int *reg, u8 *bit)
1436 {
1437 struct rockchip_pinctrl *info = bank->drvdata;
1438
1439 *regmap = info->regmap_base;
1440 *reg = RK3228_PULL_OFFSET;
1441 *reg += bank->bank_num * RK3188_PULL_BANK_STRIDE;
1442 *reg += ((pin_num / RK3188_PULL_PINS_PER_REG) * 4);
1443
1444 *bit = (pin_num % RK3188_PULL_PINS_PER_REG);
1445 *bit *= RK3188_PULL_BITS_PER_PIN;
1446 }
1447
1448 #define RK3228_DRV_GRF_OFFSET 0x200
1449
1450 static void rk3228_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank,
1451 int pin_num, struct regmap **regmap,
1452 int *reg, u8 *bit)
1453 {
1454 struct rockchip_pinctrl *info = bank->drvdata;
1455
1456 *regmap = info->regmap_base;
1457 *reg = RK3228_DRV_GRF_OFFSET;
1458 *reg += bank->bank_num * RK3288_DRV_BANK_STRIDE;
1459 *reg += ((pin_num / RK3288_DRV_PINS_PER_REG) * 4);
1460
1461 *bit = (pin_num % RK3288_DRV_PINS_PER_REG);
1462 *bit *= RK3288_DRV_BITS_PER_PIN;
1463 }
1464
1465 #define RK3368_PULL_GRF_OFFSET 0x100
1466 #define RK3368_PULL_PMU_OFFSET 0x10
1467
1468 static void rk3368_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank,
1469 int pin_num, struct regmap **regmap,
1470 int *reg, u8 *bit)
1471 {
1472 struct rockchip_pinctrl *info = bank->drvdata;
1473
1474 /* The first 32 pins of the first bank are located in PMU */
1475 if (bank->bank_num == 0) {
1476 *regmap = info->regmap_pmu;
1477 *reg = RK3368_PULL_PMU_OFFSET;
1478
1479 *reg += ((pin_num / RK3188_PULL_PINS_PER_REG) * 4);
1480 *bit = pin_num % RK3188_PULL_PINS_PER_REG;
1481 *bit *= RK3188_PULL_BITS_PER_PIN;
1482 } else {
1483 *regmap = info->regmap_base;
1484 *reg = RK3368_PULL_GRF_OFFSET;
1485
1486 /* correct the offset, as we're starting with the 2nd bank */
1487 *reg -= 0x10;
1488 *reg += bank->bank_num * RK3188_PULL_BANK_STRIDE;
1489 *reg += ((pin_num / RK3188_PULL_PINS_PER_REG) * 4);
1490
1491 *bit = (pin_num % RK3188_PULL_PINS_PER_REG);
1492 *bit *= RK3188_PULL_BITS_PER_PIN;
1493 }
1494 }
1495
1496 #define RK3368_DRV_PMU_OFFSET 0x20
1497 #define RK3368_DRV_GRF_OFFSET 0x200
1498
1499 static void rk3368_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank,
1500 int pin_num, struct regmap **regmap,
1501 int *reg, u8 *bit)
1502 {
1503 struct rockchip_pinctrl *info = bank->drvdata;
1504
1505 /* The first 32 pins of the first bank are located in PMU */
1506 if (bank->bank_num == 0) {
1507 *regmap = info->regmap_pmu;
1508 *reg = RK3368_DRV_PMU_OFFSET;
1509
1510 *reg += ((pin_num / RK3288_DRV_PINS_PER_REG) * 4);
1511 *bit = pin_num % RK3288_DRV_PINS_PER_REG;
1512 *bit *= RK3288_DRV_BITS_PER_PIN;
1513 } else {
1514 *regmap = info->regmap_base;
1515 *reg = RK3368_DRV_GRF_OFFSET;
1516
1517 /* correct the offset, as we're starting with the 2nd bank */
1518 *reg -= 0x10;
1519 *reg += bank->bank_num * RK3288_DRV_BANK_STRIDE;
1520 *reg += ((pin_num / RK3288_DRV_PINS_PER_REG) * 4);
1521
1522 *bit = (pin_num % RK3288_DRV_PINS_PER_REG);
1523 *bit *= RK3288_DRV_BITS_PER_PIN;
1524 }
1525 }
1526
1527 #define RK3399_PULL_GRF_OFFSET 0xe040
1528 #define RK3399_PULL_PMU_OFFSET 0x40
1529 #define RK3399_DRV_3BITS_PER_PIN 3
1530
1531 static void rk3399_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank,
1532 int pin_num, struct regmap **regmap,
1533 int *reg, u8 *bit)
1534 {
1535 struct rockchip_pinctrl *info = bank->drvdata;
1536
1537 /* The bank0:16 and bank1:32 pins are located in PMU */
1538 if ((bank->bank_num == 0) || (bank->bank_num == 1)) {
1539 *regmap = info->regmap_pmu;
1540 *reg = RK3399_PULL_PMU_OFFSET;
1541
1542 *reg += bank->bank_num * RK3188_PULL_BANK_STRIDE;
1543
1544 *reg += ((pin_num / RK3188_PULL_PINS_PER_REG) * 4);
1545 *bit = pin_num % RK3188_PULL_PINS_PER_REG;
1546 *bit *= RK3188_PULL_BITS_PER_PIN;
1547 } else {
1548 *regmap = info->regmap_base;
1549 *reg = RK3399_PULL_GRF_OFFSET;
1550
1551 /* correct the offset, as we're starting with the 3rd bank */
1552 *reg -= 0x20;
1553 *reg += bank->bank_num * RK3188_PULL_BANK_STRIDE;
1554 *reg += ((pin_num / RK3188_PULL_PINS_PER_REG) * 4);
1555
1556 *bit = (pin_num % RK3188_PULL_PINS_PER_REG);
1557 *bit *= RK3188_PULL_BITS_PER_PIN;
1558 }
1559 }
1560
1561 static void rk3399_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank,
1562 int pin_num, struct regmap **regmap,
1563 int *reg, u8 *bit)
1564 {
1565 struct rockchip_pinctrl *info = bank->drvdata;
1566 int drv_num = (pin_num / 8);
1567
1568 /* The bank0:16 and bank1:32 pins are located in PMU */
1569 if ((bank->bank_num == 0) || (bank->bank_num == 1))
1570 *regmap = info->regmap_pmu;
1571 else
1572 *regmap = info->regmap_base;
1573
1574 *reg = bank->drv[drv_num].offset;
1575 if ((bank->drv[drv_num].drv_type == DRV_TYPE_IO_1V8_3V0_AUTO) ||
1576 (bank->drv[drv_num].drv_type == DRV_TYPE_IO_3V3_ONLY))
1577 *bit = (pin_num % 8) * 3;
1578 else
1579 *bit = (pin_num % 8) * 2;
1580 }
1581
1582 static int rockchip_perpin_drv_list[DRV_TYPE_MAX][8] = {
1583 { 2, 4, 8, 12, -1, -1, -1, -1 },
1584 { 3, 6, 9, 12, -1, -1, -1, -1 },
1585 { 5, 10, 15, 20, -1, -1, -1, -1 },
1586 { 4, 6, 8, 10, 12, 14, 16, 18 },
1587 { 4, 7, 10, 13, 16, 19, 22, 26 }
1588 };
1589
1590 static int rockchip_get_drive_perpin(struct rockchip_pin_bank *bank,
1591 int pin_num)
1592 {
1593 struct rockchip_pinctrl *info = bank->drvdata;
1594 struct rockchip_pin_ctrl *ctrl = info->ctrl;
1595 struct regmap *regmap;
1596 int reg, ret;
1597 u32 data, temp, rmask_bits;
1598 u8 bit;
1599 int drv_type = bank->drv[pin_num / 8].drv_type;
1600
1601 ctrl->drv_calc_reg(bank, pin_num, &regmap, &reg, &bit);
1602
1603 switch (drv_type) {
1604 case DRV_TYPE_IO_1V8_3V0_AUTO:
1605 case DRV_TYPE_IO_3V3_ONLY:
1606 rmask_bits = RK3399_DRV_3BITS_PER_PIN;
1607 switch (bit) {
1608 case 0 ... 12:
1609 /* regular case, nothing to do */
1610 break;
1611 case 15:
1612 /*
1613 * drive-strength offset is special, as it is
1614 * spread over 2 registers
1615 */
1616 ret = regmap_read(regmap, reg, &data);
1617 if (ret)
1618 return ret;
1619
1620 ret = regmap_read(regmap, reg + 0x4, &temp);
1621 if (ret)
1622 return ret;
1623
1624 /*
1625 * the bit data[15] contains bit 0 of the value
1626 * while temp[1:0] contains bits 2 and 1
1627 */
1628 data >>= 15;
1629 temp &= 0x3;
1630 temp <<= 1;
1631 data |= temp;
1632
1633 return rockchip_perpin_drv_list[drv_type][data];
1634 case 18 ... 21:
1635 /* setting fully enclosed in the second register */
1636 reg += 4;
1637 bit -= 16;
1638 break;
1639 default:
1640 dev_err(info->dev, "unsupported bit: %d for pinctrl drive type: %d\n",
1641 bit, drv_type);
1642 return -EINVAL;
1643 }
1644
1645 break;
1646 case DRV_TYPE_IO_DEFAULT:
1647 case DRV_TYPE_IO_1V8_OR_3V0:
1648 case DRV_TYPE_IO_1V8_ONLY:
1649 rmask_bits = RK3288_DRV_BITS_PER_PIN;
1650 break;
1651 default:
1652 dev_err(info->dev, "unsupported pinctrl drive type: %d\n",
1653 drv_type);
1654 return -EINVAL;
1655 }
1656
1657 ret = regmap_read(regmap, reg, &data);
1658 if (ret)
1659 return ret;
1660
1661 data >>= bit;
1662 data &= (1 << rmask_bits) - 1;
1663
1664 return rockchip_perpin_drv_list[drv_type][data];
1665 }
1666
1667 static int rockchip_set_drive_perpin(struct rockchip_pin_bank *bank,
1668 int pin_num, int strength)
1669 {
1670 struct rockchip_pinctrl *info = bank->drvdata;
1671 struct rockchip_pin_ctrl *ctrl = info->ctrl;
1672 struct regmap *regmap;
1673 int reg, ret, i;
1674 u32 data, rmask, rmask_bits, temp;
1675 u8 bit;
1676 int drv_type = bank->drv[pin_num / 8].drv_type;
1677
1678 dev_dbg(info->dev, "setting drive of GPIO%d-%d to %d\n",
1679 bank->bank_num, pin_num, strength);
1680
1681 ctrl->drv_calc_reg(bank, pin_num, &regmap, &reg, &bit);
1682
1683 ret = -EINVAL;
1684 for (i = 0; i < ARRAY_SIZE(rockchip_perpin_drv_list[drv_type]); i++) {
1685 if (rockchip_perpin_drv_list[drv_type][i] == strength) {
1686 ret = i;
1687 break;
1688 } else if (rockchip_perpin_drv_list[drv_type][i] < 0) {
1689 ret = rockchip_perpin_drv_list[drv_type][i];
1690 break;
1691 }
1692 }
1693
1694 if (ret < 0) {
1695 dev_err(info->dev, "unsupported driver strength %d\n",
1696 strength);
1697 return ret;
1698 }
1699
1700 switch (drv_type) {
1701 case DRV_TYPE_IO_1V8_3V0_AUTO:
1702 case DRV_TYPE_IO_3V3_ONLY:
1703 rmask_bits = RK3399_DRV_3BITS_PER_PIN;
1704 switch (bit) {
1705 case 0 ... 12:
1706 /* regular case, nothing to do */
1707 break;
1708 case 15:
1709 /*
1710 * drive-strength offset is special, as it is spread
1711 * over 2 registers, the bit data[15] contains bit 0
1712 * of the value while temp[1:0] contains bits 2 and 1
1713 */
1714 data = (ret & 0x1) << 15;
1715 temp = (ret >> 0x1) & 0x3;
1716
1717 rmask = BIT(15) | BIT(31);
1718 data |= BIT(31);
1719 ret = regmap_update_bits(regmap, reg, rmask, data);
1720 if (ret)
1721 return ret;
1722
1723 rmask = 0x3 | (0x3 << 16);
1724 temp |= (0x3 << 16);
1725 reg += 0x4;
1726 ret = regmap_update_bits(regmap, reg, rmask, temp);
1727
1728 return ret;
1729 case 18 ... 21:
1730 /* setting fully enclosed in the second register */
1731 reg += 4;
1732 bit -= 16;
1733 break;
1734 default:
1735 dev_err(info->dev, "unsupported bit: %d for pinctrl drive type: %d\n",
1736 bit, drv_type);
1737 return -EINVAL;
1738 }
1739 break;
1740 case DRV_TYPE_IO_DEFAULT:
1741 case DRV_TYPE_IO_1V8_OR_3V0:
1742 case DRV_TYPE_IO_1V8_ONLY:
1743 rmask_bits = RK3288_DRV_BITS_PER_PIN;
1744 break;
1745 default:
1746 dev_err(info->dev, "unsupported pinctrl drive type: %d\n",
1747 drv_type);
1748 return -EINVAL;
1749 }
1750
1751 /* enable the write to the equivalent lower bits */
1752 data = ((1 << rmask_bits) - 1) << (bit + 16);
1753 rmask = data | (data >> 16);
1754 data |= (ret << bit);
1755
1756 ret = regmap_update_bits(regmap, reg, rmask, data);
1757
1758 return ret;
1759 }
1760
1761 static int rockchip_pull_list[PULL_TYPE_MAX][4] = {
1762 {
1763 PIN_CONFIG_BIAS_DISABLE,
1764 PIN_CONFIG_BIAS_PULL_UP,
1765 PIN_CONFIG_BIAS_PULL_DOWN,
1766 PIN_CONFIG_BIAS_BUS_HOLD
1767 },
1768 {
1769 PIN_CONFIG_BIAS_DISABLE,
1770 PIN_CONFIG_BIAS_PULL_DOWN,
1771 PIN_CONFIG_BIAS_DISABLE,
1772 PIN_CONFIG_BIAS_PULL_UP
1773 },
1774 };
1775
1776 static int rockchip_get_pull(struct rockchip_pin_bank *bank, int pin_num)
1777 {
1778 struct rockchip_pinctrl *info = bank->drvdata;
1779 struct rockchip_pin_ctrl *ctrl = info->ctrl;
1780 struct regmap *regmap;
1781 int reg, ret, pull_type;
1782 u8 bit;
1783 u32 data;
1784
1785 /* rk3066b does support any pulls */
1786 if (ctrl->type == RK3066B)
1787 return PIN_CONFIG_BIAS_DISABLE;
1788
1789 ctrl->pull_calc_reg(bank, pin_num, &regmap, &reg, &bit);
1790
1791 ret = regmap_read(regmap, reg, &data);
1792 if (ret)
1793 return ret;
1794
1795 switch (ctrl->type) {
1796 case RK2928:
1797 case RK3128:
1798 return !(data & BIT(bit))
1799 ? PIN_CONFIG_BIAS_PULL_PIN_DEFAULT
1800 : PIN_CONFIG_BIAS_DISABLE;
1801 case RV1108:
1802 case RK3188:
1803 case RK3288:
1804 case RK3368:
1805 case RK3399:
1806 pull_type = bank->pull_type[pin_num / 8];
1807 data >>= bit;
1808 data &= (1 << RK3188_PULL_BITS_PER_PIN) - 1;
1809
1810 return rockchip_pull_list[pull_type][data];
1811 default:
1812 dev_err(info->dev, "unsupported pinctrl type\n");
1813 return -EINVAL;
1814 };
1815 }
1816
1817 static int rockchip_set_pull(struct rockchip_pin_bank *bank,
1818 int pin_num, int pull)
1819 {
1820 struct rockchip_pinctrl *info = bank->drvdata;
1821 struct rockchip_pin_ctrl *ctrl = info->ctrl;
1822 struct regmap *regmap;
1823 int reg, ret, i, pull_type;
1824 u8 bit;
1825 u32 data, rmask;
1826
1827 dev_dbg(info->dev, "setting pull of GPIO%d-%d to %d\n",
1828 bank->bank_num, pin_num, pull);
1829
1830 /* rk3066b does support any pulls */
1831 if (ctrl->type == RK3066B)
1832 return pull ? -EINVAL : 0;
1833
1834 ctrl->pull_calc_reg(bank, pin_num, &regmap, &reg, &bit);
1835
1836 switch (ctrl->type) {
1837 case RK2928:
1838 case RK3128:
1839 data = BIT(bit + 16);
1840 if (pull == PIN_CONFIG_BIAS_DISABLE)
1841 data |= BIT(bit);
1842 ret = regmap_write(regmap, reg, data);
1843 break;
1844 case RV1108:
1845 case RK3188:
1846 case RK3288:
1847 case RK3368:
1848 case RK3399:
1849 pull_type = bank->pull_type[pin_num / 8];
1850 ret = -EINVAL;
1851 for (i = 0; i < ARRAY_SIZE(rockchip_pull_list[pull_type]);
1852 i++) {
1853 if (rockchip_pull_list[pull_type][i] == pull) {
1854 ret = i;
1855 break;
1856 }
1857 }
1858
1859 if (ret < 0) {
1860 dev_err(info->dev, "unsupported pull setting %d\n",
1861 pull);
1862 return ret;
1863 }
1864
1865 /* enable the write to the equivalent lower bits */
1866 data = ((1 << RK3188_PULL_BITS_PER_PIN) - 1) << (bit + 16);
1867 rmask = data | (data >> 16);
1868 data |= (ret << bit);
1869
1870 ret = regmap_update_bits(regmap, reg, rmask, data);
1871 break;
1872 default:
1873 dev_err(info->dev, "unsupported pinctrl type\n");
1874 return -EINVAL;
1875 }
1876
1877 return ret;
1878 }
1879
1880 #define RK3328_SCHMITT_BITS_PER_PIN 1
1881 #define RK3328_SCHMITT_PINS_PER_REG 16
1882 #define RK3328_SCHMITT_BANK_STRIDE 8
1883 #define RK3328_SCHMITT_GRF_OFFSET 0x380
1884
1885 static int rk3328_calc_schmitt_reg_and_bit(struct rockchip_pin_bank *bank,
1886 int pin_num,
1887 struct regmap **regmap,
1888 int *reg, u8 *bit)
1889 {
1890 struct rockchip_pinctrl *info = bank->drvdata;
1891
1892 *regmap = info->regmap_base;
1893 *reg = RK3328_SCHMITT_GRF_OFFSET;
1894
1895 *reg += bank->bank_num * RK3328_SCHMITT_BANK_STRIDE;
1896 *reg += ((pin_num / RK3328_SCHMITT_PINS_PER_REG) * 4);
1897 *bit = pin_num % RK3328_SCHMITT_PINS_PER_REG;
1898
1899 return 0;
1900 }
1901
1902 static int rockchip_get_schmitt(struct rockchip_pin_bank *bank, int pin_num)
1903 {
1904 struct rockchip_pinctrl *info = bank->drvdata;
1905 struct rockchip_pin_ctrl *ctrl = info->ctrl;
1906 struct regmap *regmap;
1907 int reg, ret;
1908 u8 bit;
1909 u32 data;
1910
1911 ret = ctrl->schmitt_calc_reg(bank, pin_num, &regmap, &reg, &bit);
1912 if (ret)
1913 return ret;
1914
1915 ret = regmap_read(regmap, reg, &data);
1916 if (ret)
1917 return ret;
1918
1919 data >>= bit;
1920 return data & 0x1;
1921 }
1922
1923 static int rockchip_set_schmitt(struct rockchip_pin_bank *bank,
1924 int pin_num, int enable)
1925 {
1926 struct rockchip_pinctrl *info = bank->drvdata;
1927 struct rockchip_pin_ctrl *ctrl = info->ctrl;
1928 struct regmap *regmap;
1929 int reg, ret;
1930 u8 bit;
1931 u32 data, rmask;
1932
1933 dev_dbg(info->dev, "setting input schmitt of GPIO%d-%d to %d\n",
1934 bank->bank_num, pin_num, enable);
1935
1936 ret = ctrl->schmitt_calc_reg(bank, pin_num, &regmap, &reg, &bit);
1937 if (ret)
1938 return ret;
1939
1940 /* enable the write to the equivalent lower bits */
1941 data = BIT(bit + 16) | (enable << bit);
1942 rmask = BIT(bit + 16) | BIT(bit);
1943
1944 return regmap_update_bits(regmap, reg, rmask, data);
1945 }
1946
1947 /*
1948 * Pinmux_ops handling
1949 */
1950
1951 static int rockchip_pmx_get_funcs_count(struct pinctrl_dev *pctldev)
1952 {
1953 struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
1954
1955 return info->nfunctions;
1956 }
1957
1958 static const char *rockchip_pmx_get_func_name(struct pinctrl_dev *pctldev,
1959 unsigned selector)
1960 {
1961 struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
1962
1963 return info->functions[selector].name;
1964 }
1965
1966 static int rockchip_pmx_get_groups(struct pinctrl_dev *pctldev,
1967 unsigned selector, const char * const **groups,
1968 unsigned * const num_groups)
1969 {
1970 struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
1971
1972 *groups = info->functions[selector].groups;
1973 *num_groups = info->functions[selector].ngroups;
1974
1975 return 0;
1976 }
1977
1978 static int rockchip_pmx_set(struct pinctrl_dev *pctldev, unsigned selector,
1979 unsigned group)
1980 {
1981 struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
1982 const unsigned int *pins = info->groups[group].pins;
1983 const struct rockchip_pin_config *data = info->groups[group].data;
1984 struct rockchip_pin_bank *bank;
1985 int cnt, ret = 0;
1986
1987 dev_dbg(info->dev, "enable function %s group %s\n",
1988 info->functions[selector].name, info->groups[group].name);
1989
1990 /*
1991 * for each pin in the pin group selected, program the correspoding pin
1992 * pin function number in the config register.
1993 */
1994 for (cnt = 0; cnt < info->groups[group].npins; cnt++) {
1995 bank = pin_to_bank(info, pins[cnt]);
1996 ret = rockchip_set_mux(bank, pins[cnt] - bank->pin_base,
1997 data[cnt].func);
1998 if (ret)
1999 break;
2000 }
2001
2002 if (ret) {
2003 /* revert the already done pin settings */
2004 for (cnt--; cnt >= 0; cnt--)
2005 rockchip_set_mux(bank, pins[cnt] - bank->pin_base, 0);
2006
2007 return ret;
2008 }
2009
2010 return 0;
2011 }
2012
2013 static int rockchip_gpio_get_direction(struct gpio_chip *chip, unsigned offset)
2014 {
2015 struct rockchip_pin_bank *bank = gpiochip_get_data(chip);
2016 u32 data;
2017
2018 data = readl_relaxed(bank->reg_base + GPIO_SWPORT_DDR);
2019
2020 return !(data & BIT(offset));
2021 }
2022
2023 /*
2024 * The calls to gpio_direction_output() and gpio_direction_input()
2025 * leads to this function call (via the pinctrl_gpio_direction_{input|output}()
2026 * function called from the gpiolib interface).
2027 */
2028 static int _rockchip_pmx_gpio_set_direction(struct gpio_chip *chip,
2029 int pin, bool input)
2030 {
2031 struct rockchip_pin_bank *bank;
2032 int ret;
2033 unsigned long flags;
2034 u32 data;
2035
2036 bank = gpiochip_get_data(chip);
2037
2038 ret = rockchip_set_mux(bank, pin, RK_FUNC_GPIO);
2039 if (ret < 0)
2040 return ret;
2041
2042 clk_enable(bank->clk);
2043 raw_spin_lock_irqsave(&bank->slock, flags);
2044
2045 data = readl_relaxed(bank->reg_base + GPIO_SWPORT_DDR);
2046 /* set bit to 1 for output, 0 for input */
2047 if (!input)
2048 data |= BIT(pin);
2049 else
2050 data &= ~BIT(pin);
2051 writel_relaxed(data, bank->reg_base + GPIO_SWPORT_DDR);
2052
2053 raw_spin_unlock_irqrestore(&bank->slock, flags);
2054 clk_disable(bank->clk);
2055
2056 return 0;
2057 }
2058
2059 static int rockchip_pmx_gpio_set_direction(struct pinctrl_dev *pctldev,
2060 struct pinctrl_gpio_range *range,
2061 unsigned offset, bool input)
2062 {
2063 struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
2064 struct gpio_chip *chip;
2065 int pin;
2066
2067 chip = range->gc;
2068 pin = offset - chip->base;
2069 dev_dbg(info->dev, "gpio_direction for pin %u as %s-%d to %s\n",
2070 offset, range->name, pin, input ? "input" : "output");
2071
2072 return _rockchip_pmx_gpio_set_direction(chip, offset - chip->base,
2073 input);
2074 }
2075
2076 static const struct pinmux_ops rockchip_pmx_ops = {
2077 .get_functions_count = rockchip_pmx_get_funcs_count,
2078 .get_function_name = rockchip_pmx_get_func_name,
2079 .get_function_groups = rockchip_pmx_get_groups,
2080 .set_mux = rockchip_pmx_set,
2081 .gpio_set_direction = rockchip_pmx_gpio_set_direction,
2082 };
2083
2084 /*
2085 * Pinconf_ops handling
2086 */
2087
2088 static bool rockchip_pinconf_pull_valid(struct rockchip_pin_ctrl *ctrl,
2089 enum pin_config_param pull)
2090 {
2091 switch (ctrl->type) {
2092 case RK2928:
2093 case RK3128:
2094 return (pull == PIN_CONFIG_BIAS_PULL_PIN_DEFAULT ||
2095 pull == PIN_CONFIG_BIAS_DISABLE);
2096 case RK3066B:
2097 return pull ? false : true;
2098 case RV1108:
2099 case RK3188:
2100 case RK3288:
2101 case RK3368:
2102 case RK3399:
2103 return (pull != PIN_CONFIG_BIAS_PULL_PIN_DEFAULT);
2104 }
2105
2106 return false;
2107 }
2108
2109 static void rockchip_gpio_set(struct gpio_chip *gc, unsigned offset, int value);
2110 static int rockchip_gpio_get(struct gpio_chip *gc, unsigned offset);
2111
2112 /* set the pin config settings for a specified pin */
2113 static int rockchip_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin,
2114 unsigned long *configs, unsigned num_configs)
2115 {
2116 struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
2117 struct rockchip_pin_bank *bank = pin_to_bank(info, pin);
2118 enum pin_config_param param;
2119 u32 arg;
2120 int i;
2121 int rc;
2122
2123 for (i = 0; i < num_configs; i++) {
2124 param = pinconf_to_config_param(configs[i]);
2125 arg = pinconf_to_config_argument(configs[i]);
2126
2127 switch (param) {
2128 case PIN_CONFIG_BIAS_DISABLE:
2129 rc = rockchip_set_pull(bank, pin - bank->pin_base,
2130 param);
2131 if (rc)
2132 return rc;
2133 break;
2134 case PIN_CONFIG_BIAS_PULL_UP:
2135 case PIN_CONFIG_BIAS_PULL_DOWN:
2136 case PIN_CONFIG_BIAS_PULL_PIN_DEFAULT:
2137 case PIN_CONFIG_BIAS_BUS_HOLD:
2138 if (!rockchip_pinconf_pull_valid(info->ctrl, param))
2139 return -ENOTSUPP;
2140
2141 if (!arg)
2142 return -EINVAL;
2143
2144 rc = rockchip_set_pull(bank, pin - bank->pin_base,
2145 param);
2146 if (rc)
2147 return rc;
2148 break;
2149 case PIN_CONFIG_OUTPUT:
2150 rockchip_gpio_set(&bank->gpio_chip,
2151 pin - bank->pin_base, arg);
2152 rc = _rockchip_pmx_gpio_set_direction(&bank->gpio_chip,
2153 pin - bank->pin_base, false);
2154 if (rc)
2155 return rc;
2156 break;
2157 case PIN_CONFIG_DRIVE_STRENGTH:
2158 /* rk3288 is the first with per-pin drive-strength */
2159 if (!info->ctrl->drv_calc_reg)
2160 return -ENOTSUPP;
2161
2162 rc = rockchip_set_drive_perpin(bank,
2163 pin - bank->pin_base, arg);
2164 if (rc < 0)
2165 return rc;
2166 break;
2167 case PIN_CONFIG_INPUT_SCHMITT_ENABLE:
2168 if (!info->ctrl->schmitt_calc_reg)
2169 return -ENOTSUPP;
2170
2171 rc = rockchip_set_schmitt(bank,
2172 pin - bank->pin_base, arg);
2173 if (rc < 0)
2174 return rc;
2175 break;
2176 default:
2177 return -ENOTSUPP;
2178 break;
2179 }
2180 } /* for each config */
2181
2182 return 0;
2183 }
2184
2185 /* get the pin config settings for a specified pin */
2186 static int rockchip_pinconf_get(struct pinctrl_dev *pctldev, unsigned int pin,
2187 unsigned long *config)
2188 {
2189 struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
2190 struct rockchip_pin_bank *bank = pin_to_bank(info, pin);
2191 enum pin_config_param param = pinconf_to_config_param(*config);
2192 u16 arg;
2193 int rc;
2194
2195 switch (param) {
2196 case PIN_CONFIG_BIAS_DISABLE:
2197 if (rockchip_get_pull(bank, pin - bank->pin_base) != param)
2198 return -EINVAL;
2199
2200 arg = 0;
2201 break;
2202 case PIN_CONFIG_BIAS_PULL_UP:
2203 case PIN_CONFIG_BIAS_PULL_DOWN:
2204 case PIN_CONFIG_BIAS_PULL_PIN_DEFAULT:
2205 case PIN_CONFIG_BIAS_BUS_HOLD:
2206 if (!rockchip_pinconf_pull_valid(info->ctrl, param))
2207 return -ENOTSUPP;
2208
2209 if (rockchip_get_pull(bank, pin - bank->pin_base) != param)
2210 return -EINVAL;
2211
2212 arg = 1;
2213 break;
2214 case PIN_CONFIG_OUTPUT:
2215 rc = rockchip_get_mux(bank, pin - bank->pin_base);
2216 if (rc != RK_FUNC_GPIO)
2217 return -EINVAL;
2218
2219 rc = rockchip_gpio_get(&bank->gpio_chip, pin - bank->pin_base);
2220 if (rc < 0)
2221 return rc;
2222
2223 arg = rc ? 1 : 0;
2224 break;
2225 case PIN_CONFIG_DRIVE_STRENGTH:
2226 /* rk3288 is the first with per-pin drive-strength */
2227 if (!info->ctrl->drv_calc_reg)
2228 return -ENOTSUPP;
2229
2230 rc = rockchip_get_drive_perpin(bank, pin - bank->pin_base);
2231 if (rc < 0)
2232 return rc;
2233
2234 arg = rc;
2235 break;
2236 case PIN_CONFIG_INPUT_SCHMITT_ENABLE:
2237 if (!info->ctrl->schmitt_calc_reg)
2238 return -ENOTSUPP;
2239
2240 rc = rockchip_get_schmitt(bank, pin - bank->pin_base);
2241 if (rc < 0)
2242 return rc;
2243
2244 arg = rc;
2245 break;
2246 default:
2247 return -ENOTSUPP;
2248 break;
2249 }
2250
2251 *config = pinconf_to_config_packed(param, arg);
2252
2253 return 0;
2254 }
2255
2256 static const struct pinconf_ops rockchip_pinconf_ops = {
2257 .pin_config_get = rockchip_pinconf_get,
2258 .pin_config_set = rockchip_pinconf_set,
2259 .is_generic = true,
2260 };
2261
2262 static const struct of_device_id rockchip_bank_match[] = {
2263 { .compatible = "rockchip,gpio-bank" },
2264 { .compatible = "rockchip,rk3188-gpio-bank0" },
2265 {},
2266 };
2267
2268 static void rockchip_pinctrl_child_count(struct rockchip_pinctrl *info,
2269 struct device_node *np)
2270 {
2271 struct device_node *child;
2272
2273 for_each_child_of_node(np, child) {
2274 if (of_match_node(rockchip_bank_match, child))
2275 continue;
2276
2277 info->nfunctions++;
2278 info->ngroups += of_get_child_count(child);
2279 }
2280 }
2281
2282 static int rockchip_pinctrl_parse_groups(struct device_node *np,
2283 struct rockchip_pin_group *grp,
2284 struct rockchip_pinctrl *info,
2285 u32 index)
2286 {
2287 struct rockchip_pin_bank *bank;
2288 int size;
2289 const __be32 *list;
2290 int num;
2291 int i, j;
2292 int ret;
2293
2294 dev_dbg(info->dev, "group(%d): %s\n", index, np->name);
2295
2296 /* Initialise group */
2297 grp->name = np->name;
2298
2299 /*
2300 * the binding format is rockchip,pins = <bank pin mux CONFIG>,
2301 * do sanity check and calculate pins number
2302 */
2303 list = of_get_property(np, "rockchip,pins", &size);
2304 /* we do not check return since it's safe node passed down */
2305 size /= sizeof(*list);
2306 if (!size || size % 4) {
2307 dev_err(info->dev, "wrong pins number or pins and configs should be by 4\n");
2308 return -EINVAL;
2309 }
2310
2311 grp->npins = size / 4;
2312
2313 grp->pins = devm_kzalloc(info->dev, grp->npins * sizeof(unsigned int),
2314 GFP_KERNEL);
2315 grp->data = devm_kzalloc(info->dev, grp->npins *
2316 sizeof(struct rockchip_pin_config),
2317 GFP_KERNEL);
2318 if (!grp->pins || !grp->data)
2319 return -ENOMEM;
2320
2321 for (i = 0, j = 0; i < size; i += 4, j++) {
2322 const __be32 *phandle;
2323 struct device_node *np_config;
2324
2325 num = be32_to_cpu(*list++);
2326 bank = bank_num_to_bank(info, num);
2327 if (IS_ERR(bank))
2328 return PTR_ERR(bank);
2329
2330 grp->pins[j] = bank->pin_base + be32_to_cpu(*list++);
2331 grp->data[j].func = be32_to_cpu(*list++);
2332
2333 phandle = list++;
2334 if (!phandle)
2335 return -EINVAL;
2336
2337 np_config = of_find_node_by_phandle(be32_to_cpup(phandle));
2338 ret = pinconf_generic_parse_dt_config(np_config, NULL,
2339 &grp->data[j].configs, &grp->data[j].nconfigs);
2340 if (ret)
2341 return ret;
2342 }
2343
2344 return 0;
2345 }
2346
2347 static int rockchip_pinctrl_parse_functions(struct device_node *np,
2348 struct rockchip_pinctrl *info,
2349 u32 index)
2350 {
2351 struct device_node *child;
2352 struct rockchip_pmx_func *func;
2353 struct rockchip_pin_group *grp;
2354 int ret;
2355 static u32 grp_index;
2356 u32 i = 0;
2357
2358 dev_dbg(info->dev, "parse function(%d): %s\n", index, np->name);
2359
2360 func = &info->functions[index];
2361
2362 /* Initialise function */
2363 func->name = np->name;
2364 func->ngroups = of_get_child_count(np);
2365 if (func->ngroups <= 0)
2366 return 0;
2367
2368 func->groups = devm_kzalloc(info->dev,
2369 func->ngroups * sizeof(char *), GFP_KERNEL);
2370 if (!func->groups)
2371 return -ENOMEM;
2372
2373 for_each_child_of_node(np, child) {
2374 func->groups[i] = child->name;
2375 grp = &info->groups[grp_index++];
2376 ret = rockchip_pinctrl_parse_groups(child, grp, info, i++);
2377 if (ret) {
2378 of_node_put(child);
2379 return ret;
2380 }
2381 }
2382
2383 return 0;
2384 }
2385
2386 static int rockchip_pinctrl_parse_dt(struct platform_device *pdev,
2387 struct rockchip_pinctrl *info)
2388 {
2389 struct device *dev = &pdev->dev;
2390 struct device_node *np = dev->of_node;
2391 struct device_node *child;
2392 int ret;
2393 int i;
2394
2395 rockchip_pinctrl_child_count(info, np);
2396
2397 dev_dbg(&pdev->dev, "nfunctions = %d\n", info->nfunctions);
2398 dev_dbg(&pdev->dev, "ngroups = %d\n", info->ngroups);
2399
2400 info->functions = devm_kzalloc(dev, info->nfunctions *
2401 sizeof(struct rockchip_pmx_func),
2402 GFP_KERNEL);
2403 if (!info->functions) {
2404 dev_err(dev, "failed to allocate memory for function list\n");
2405 return -EINVAL;
2406 }
2407
2408 info->groups = devm_kzalloc(dev, info->ngroups *
2409 sizeof(struct rockchip_pin_group),
2410 GFP_KERNEL);
2411 if (!info->groups) {
2412 dev_err(dev, "failed allocate memory for ping group list\n");
2413 return -EINVAL;
2414 }
2415
2416 i = 0;
2417
2418 for_each_child_of_node(np, child) {
2419 if (of_match_node(rockchip_bank_match, child))
2420 continue;
2421
2422 ret = rockchip_pinctrl_parse_functions(child, info, i++);
2423 if (ret) {
2424 dev_err(&pdev->dev, "failed to parse function\n");
2425 of_node_put(child);
2426 return ret;
2427 }
2428 }
2429
2430 return 0;
2431 }
2432
2433 static int rockchip_pinctrl_register(struct platform_device *pdev,
2434 struct rockchip_pinctrl *info)
2435 {
2436 struct pinctrl_desc *ctrldesc = &info->pctl;
2437 struct pinctrl_pin_desc *pindesc, *pdesc;
2438 struct rockchip_pin_bank *pin_bank;
2439 int pin, bank, ret;
2440 int k;
2441
2442 ctrldesc->name = "rockchip-pinctrl";
2443 ctrldesc->owner = THIS_MODULE;
2444 ctrldesc->pctlops = &rockchip_pctrl_ops;
2445 ctrldesc->pmxops = &rockchip_pmx_ops;
2446 ctrldesc->confops = &rockchip_pinconf_ops;
2447
2448 pindesc = devm_kzalloc(&pdev->dev, sizeof(*pindesc) *
2449 info->ctrl->nr_pins, GFP_KERNEL);
2450 if (!pindesc) {
2451 dev_err(&pdev->dev, "mem alloc for pin descriptors failed\n");
2452 return -ENOMEM;
2453 }
2454 ctrldesc->pins = pindesc;
2455 ctrldesc->npins = info->ctrl->nr_pins;
2456
2457 pdesc = pindesc;
2458 for (bank = 0 , k = 0; bank < info->ctrl->nr_banks; bank++) {
2459 pin_bank = &info->ctrl->pin_banks[bank];
2460 for (pin = 0; pin < pin_bank->nr_pins; pin++, k++) {
2461 pdesc->number = k;
2462 pdesc->name = kasprintf(GFP_KERNEL, "%s-%d",
2463 pin_bank->name, pin);
2464 pdesc++;
2465 }
2466 }
2467
2468 ret = rockchip_pinctrl_parse_dt(pdev, info);
2469 if (ret)
2470 return ret;
2471
2472 info->pctl_dev = devm_pinctrl_register(&pdev->dev, ctrldesc, info);
2473 if (IS_ERR(info->pctl_dev)) {
2474 dev_err(&pdev->dev, "could not register pinctrl driver\n");
2475 return PTR_ERR(info->pctl_dev);
2476 }
2477
2478 for (bank = 0; bank < info->ctrl->nr_banks; ++bank) {
2479 pin_bank = &info->ctrl->pin_banks[bank];
2480 pin_bank->grange.name = pin_bank->name;
2481 pin_bank->grange.id = bank;
2482 pin_bank->grange.pin_base = pin_bank->pin_base;
2483 pin_bank->grange.base = pin_bank->gpio_chip.base;
2484 pin_bank->grange.npins = pin_bank->gpio_chip.ngpio;
2485 pin_bank->grange.gc = &pin_bank->gpio_chip;
2486 pinctrl_add_gpio_range(info->pctl_dev, &pin_bank->grange);
2487 }
2488
2489 return 0;
2490 }
2491
2492 /*
2493 * GPIO handling
2494 */
2495
2496 static void rockchip_gpio_set(struct gpio_chip *gc, unsigned offset, int value)
2497 {
2498 struct rockchip_pin_bank *bank = gpiochip_get_data(gc);
2499 void __iomem *reg = bank->reg_base + GPIO_SWPORT_DR;
2500 unsigned long flags;
2501 u32 data;
2502
2503 clk_enable(bank->clk);
2504 raw_spin_lock_irqsave(&bank->slock, flags);
2505
2506 data = readl(reg);
2507 data &= ~BIT(offset);
2508 if (value)
2509 data |= BIT(offset);
2510 writel(data, reg);
2511
2512 raw_spin_unlock_irqrestore(&bank->slock, flags);
2513 clk_disable(bank->clk);
2514 }
2515
2516 /*
2517 * Returns the level of the pin for input direction and setting of the DR
2518 * register for output gpios.
2519 */
2520 static int rockchip_gpio_get(struct gpio_chip *gc, unsigned offset)
2521 {
2522 struct rockchip_pin_bank *bank = gpiochip_get_data(gc);
2523 u32 data;
2524
2525 clk_enable(bank->clk);
2526 data = readl(bank->reg_base + GPIO_EXT_PORT);
2527 clk_disable(bank->clk);
2528 data >>= offset;
2529 data &= 1;
2530 return data;
2531 }
2532
2533 /*
2534 * gpiolib gpio_direction_input callback function. The setting of the pin
2535 * mux function as 'gpio input' will be handled by the pinctrl susbsystem
2536 * interface.
2537 */
2538 static int rockchip_gpio_direction_input(struct gpio_chip *gc, unsigned offset)
2539 {
2540 return pinctrl_gpio_direction_input(gc->base + offset);
2541 }
2542
2543 /*
2544 * gpiolib gpio_direction_output callback function. The setting of the pin
2545 * mux function as 'gpio output' will be handled by the pinctrl susbsystem
2546 * interface.
2547 */
2548 static int rockchip_gpio_direction_output(struct gpio_chip *gc,
2549 unsigned offset, int value)
2550 {
2551 rockchip_gpio_set(gc, offset, value);
2552 return pinctrl_gpio_direction_output(gc->base + offset);
2553 }
2554
2555 /*
2556 * gpiolib gpio_to_irq callback function. Creates a mapping between a GPIO pin
2557 * and a virtual IRQ, if not already present.
2558 */
2559 static int rockchip_gpio_to_irq(struct gpio_chip *gc, unsigned offset)
2560 {
2561 struct rockchip_pin_bank *bank = gpiochip_get_data(gc);
2562 unsigned int virq;
2563
2564 if (!bank->domain)
2565 return -ENXIO;
2566
2567 virq = irq_create_mapping(bank->domain, offset);
2568
2569 return (virq) ? : -ENXIO;
2570 }
2571
2572 static const struct gpio_chip rockchip_gpiolib_chip = {
2573 .request = gpiochip_generic_request,
2574 .free = gpiochip_generic_free,
2575 .set = rockchip_gpio_set,
2576 .get = rockchip_gpio_get,
2577 .get_direction = rockchip_gpio_get_direction,
2578 .direction_input = rockchip_gpio_direction_input,
2579 .direction_output = rockchip_gpio_direction_output,
2580 .to_irq = rockchip_gpio_to_irq,
2581 .owner = THIS_MODULE,
2582 };
2583
2584 /*
2585 * Interrupt handling
2586 */
2587
2588 static void rockchip_irq_demux(struct irq_desc *desc)
2589 {
2590 struct irq_chip *chip = irq_desc_get_chip(desc);
2591 struct rockchip_pin_bank *bank = irq_desc_get_handler_data(desc);
2592 u32 pend;
2593
2594 dev_dbg(bank->drvdata->dev, "got irq for bank %s\n", bank->name);
2595
2596 chained_irq_enter(chip, desc);
2597
2598 pend = readl_relaxed(bank->reg_base + GPIO_INT_STATUS);
2599
2600 while (pend) {
2601 unsigned int irq, virq;
2602
2603 irq = __ffs(pend);
2604 pend &= ~BIT(irq);
2605 virq = irq_linear_revmap(bank->domain, irq);
2606
2607 if (!virq) {
2608 dev_err(bank->drvdata->dev, "unmapped irq %d\n", irq);
2609 continue;
2610 }
2611
2612 dev_dbg(bank->drvdata->dev, "handling irq %d\n", irq);
2613
2614 /*
2615 * Triggering IRQ on both rising and falling edge
2616 * needs manual intervention.
2617 */
2618 if (bank->toggle_edge_mode & BIT(irq)) {
2619 u32 data, data_old, polarity;
2620 unsigned long flags;
2621
2622 data = readl_relaxed(bank->reg_base + GPIO_EXT_PORT);
2623 do {
2624 raw_spin_lock_irqsave(&bank->slock, flags);
2625
2626 polarity = readl_relaxed(bank->reg_base +
2627 GPIO_INT_POLARITY);
2628 if (data & BIT(irq))
2629 polarity &= ~BIT(irq);
2630 else
2631 polarity |= BIT(irq);
2632 writel(polarity,
2633 bank->reg_base + GPIO_INT_POLARITY);
2634
2635 raw_spin_unlock_irqrestore(&bank->slock, flags);
2636
2637 data_old = data;
2638 data = readl_relaxed(bank->reg_base +
2639 GPIO_EXT_PORT);
2640 } while ((data & BIT(irq)) != (data_old & BIT(irq)));
2641 }
2642
2643 generic_handle_irq(virq);
2644 }
2645
2646 chained_irq_exit(chip, desc);
2647 }
2648
2649 static int rockchip_irq_set_type(struct irq_data *d, unsigned int type)
2650 {
2651 struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
2652 struct rockchip_pin_bank *bank = gc->private;
2653 u32 mask = BIT(d->hwirq);
2654 u32 polarity;
2655 u32 level;
2656 u32 data;
2657 unsigned long flags;
2658 int ret;
2659
2660 /* make sure the pin is configured as gpio input */
2661 ret = rockchip_set_mux(bank, d->hwirq, RK_FUNC_GPIO);
2662 if (ret < 0)
2663 return ret;
2664
2665 clk_enable(bank->clk);
2666 raw_spin_lock_irqsave(&bank->slock, flags);
2667
2668 data = readl_relaxed(bank->reg_base + GPIO_SWPORT_DDR);
2669 data &= ~mask;
2670 writel_relaxed(data, bank->reg_base + GPIO_SWPORT_DDR);
2671
2672 raw_spin_unlock_irqrestore(&bank->slock, flags);
2673
2674 if (type & IRQ_TYPE_EDGE_BOTH)
2675 irq_set_handler_locked(d, handle_edge_irq);
2676 else
2677 irq_set_handler_locked(d, handle_level_irq);
2678
2679 raw_spin_lock_irqsave(&bank->slock, flags);
2680 irq_gc_lock(gc);
2681
2682 level = readl_relaxed(gc->reg_base + GPIO_INTTYPE_LEVEL);
2683 polarity = readl_relaxed(gc->reg_base + GPIO_INT_POLARITY);
2684
2685 switch (type) {
2686 case IRQ_TYPE_EDGE_BOTH:
2687 bank->toggle_edge_mode |= mask;
2688 level |= mask;
2689
2690 /*
2691 * Determine gpio state. If 1 next interrupt should be falling
2692 * otherwise rising.
2693 */
2694 data = readl(bank->reg_base + GPIO_EXT_PORT);
2695 if (data & mask)
2696 polarity &= ~mask;
2697 else
2698 polarity |= mask;
2699 break;
2700 case IRQ_TYPE_EDGE_RISING:
2701 bank->toggle_edge_mode &= ~mask;
2702 level |= mask;
2703 polarity |= mask;
2704 break;
2705 case IRQ_TYPE_EDGE_FALLING:
2706 bank->toggle_edge_mode &= ~mask;
2707 level |= mask;
2708 polarity &= ~mask;
2709 break;
2710 case IRQ_TYPE_LEVEL_HIGH:
2711 bank->toggle_edge_mode &= ~mask;
2712 level &= ~mask;
2713 polarity |= mask;
2714 break;
2715 case IRQ_TYPE_LEVEL_LOW:
2716 bank->toggle_edge_mode &= ~mask;
2717 level &= ~mask;
2718 polarity &= ~mask;
2719 break;
2720 default:
2721 irq_gc_unlock(gc);
2722 raw_spin_unlock_irqrestore(&bank->slock, flags);
2723 clk_disable(bank->clk);
2724 return -EINVAL;
2725 }
2726
2727 writel_relaxed(level, gc->reg_base + GPIO_INTTYPE_LEVEL);
2728 writel_relaxed(polarity, gc->reg_base + GPIO_INT_POLARITY);
2729
2730 irq_gc_unlock(gc);
2731 raw_spin_unlock_irqrestore(&bank->slock, flags);
2732 clk_disable(bank->clk);
2733
2734 return 0;
2735 }
2736
2737 static void rockchip_irq_suspend(struct irq_data *d)
2738 {
2739 struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
2740 struct rockchip_pin_bank *bank = gc->private;
2741
2742 clk_enable(bank->clk);
2743 bank->saved_masks = irq_reg_readl(gc, GPIO_INTMASK);
2744 irq_reg_writel(gc, ~gc->wake_active, GPIO_INTMASK);
2745 clk_disable(bank->clk);
2746 }
2747
2748 static void rockchip_irq_resume(struct irq_data *d)
2749 {
2750 struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
2751 struct rockchip_pin_bank *bank = gc->private;
2752
2753 clk_enable(bank->clk);
2754 irq_reg_writel(gc, bank->saved_masks, GPIO_INTMASK);
2755 clk_disable(bank->clk);
2756 }
2757
2758 static void rockchip_irq_enable(struct irq_data *d)
2759 {
2760 struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
2761 struct rockchip_pin_bank *bank = gc->private;
2762
2763 clk_enable(bank->clk);
2764 irq_gc_mask_clr_bit(d);
2765 }
2766
2767 static void rockchip_irq_disable(struct irq_data *d)
2768 {
2769 struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
2770 struct rockchip_pin_bank *bank = gc->private;
2771
2772 irq_gc_mask_set_bit(d);
2773 clk_disable(bank->clk);
2774 }
2775
2776 static int rockchip_interrupts_register(struct platform_device *pdev,
2777 struct rockchip_pinctrl *info)
2778 {
2779 struct rockchip_pin_ctrl *ctrl = info->ctrl;
2780 struct rockchip_pin_bank *bank = ctrl->pin_banks;
2781 unsigned int clr = IRQ_NOREQUEST | IRQ_NOPROBE | IRQ_NOAUTOEN;
2782 struct irq_chip_generic *gc;
2783 int ret;
2784 int i, j;
2785
2786 for (i = 0; i < ctrl->nr_banks; ++i, ++bank) {
2787 if (!bank->valid) {
2788 dev_warn(&pdev->dev, "bank %s is not valid\n",
2789 bank->name);
2790 continue;
2791 }
2792
2793 ret = clk_enable(bank->clk);
2794 if (ret) {
2795 dev_err(&pdev->dev, "failed to enable clock for bank %s\n",
2796 bank->name);
2797 continue;
2798 }
2799
2800 bank->domain = irq_domain_add_linear(bank->of_node, 32,
2801 &irq_generic_chip_ops, NULL);
2802 if (!bank->domain) {
2803 dev_warn(&pdev->dev, "could not initialize irq domain for bank %s\n",
2804 bank->name);
2805 clk_disable(bank->clk);
2806 continue;
2807 }
2808
2809 ret = irq_alloc_domain_generic_chips(bank->domain, 32, 1,
2810 "rockchip_gpio_irq", handle_level_irq,
2811 clr, 0, IRQ_GC_INIT_MASK_CACHE);
2812 if (ret) {
2813 dev_err(&pdev->dev, "could not alloc generic chips for bank %s\n",
2814 bank->name);
2815 irq_domain_remove(bank->domain);
2816 clk_disable(bank->clk);
2817 continue;
2818 }
2819
2820 /*
2821 * Linux assumes that all interrupts start out disabled/masked.
2822 * Our driver only uses the concept of masked and always keeps
2823 * things enabled, so for us that's all masked and all enabled.
2824 */
2825 writel_relaxed(0xffffffff, bank->reg_base + GPIO_INTMASK);
2826 writel_relaxed(0xffffffff, bank->reg_base + GPIO_INTEN);
2827
2828 gc = irq_get_domain_generic_chip(bank->domain, 0);
2829 gc->reg_base = bank->reg_base;
2830 gc->private = bank;
2831 gc->chip_types[0].regs.mask = GPIO_INTMASK;
2832 gc->chip_types[0].regs.ack = GPIO_PORTS_EOI;
2833 gc->chip_types[0].chip.irq_ack = irq_gc_ack_set_bit;
2834 gc->chip_types[0].chip.irq_mask = irq_gc_mask_set_bit;
2835 gc->chip_types[0].chip.irq_unmask = irq_gc_mask_clr_bit;
2836 gc->chip_types[0].chip.irq_enable = rockchip_irq_enable;
2837 gc->chip_types[0].chip.irq_disable = rockchip_irq_disable;
2838 gc->chip_types[0].chip.irq_set_wake = irq_gc_set_wake;
2839 gc->chip_types[0].chip.irq_suspend = rockchip_irq_suspend;
2840 gc->chip_types[0].chip.irq_resume = rockchip_irq_resume;
2841 gc->chip_types[0].chip.irq_set_type = rockchip_irq_set_type;
2842 gc->wake_enabled = IRQ_MSK(bank->nr_pins);
2843
2844 irq_set_chained_handler_and_data(bank->irq,
2845 rockchip_irq_demux, bank);
2846
2847 /* map the gpio irqs here, when the clock is still running */
2848 for (j = 0 ; j < 32 ; j++)
2849 irq_create_mapping(bank->domain, j);
2850
2851 clk_disable(bank->clk);
2852 }
2853
2854 return 0;
2855 }
2856
2857 static int rockchip_gpiolib_register(struct platform_device *pdev,
2858 struct rockchip_pinctrl *info)
2859 {
2860 struct rockchip_pin_ctrl *ctrl = info->ctrl;
2861 struct rockchip_pin_bank *bank = ctrl->pin_banks;
2862 struct gpio_chip *gc;
2863 int ret;
2864 int i;
2865
2866 for (i = 0; i < ctrl->nr_banks; ++i, ++bank) {
2867 if (!bank->valid) {
2868 dev_warn(&pdev->dev, "bank %s is not valid\n",
2869 bank->name);
2870 continue;
2871 }
2872
2873 bank->gpio_chip = rockchip_gpiolib_chip;
2874
2875 gc = &bank->gpio_chip;
2876 gc->base = bank->pin_base;
2877 gc->ngpio = bank->nr_pins;
2878 gc->parent = &pdev->dev;
2879 gc->of_node = bank->of_node;
2880 gc->label = bank->name;
2881
2882 ret = gpiochip_add_data(gc, bank);
2883 if (ret) {
2884 dev_err(&pdev->dev, "failed to register gpio_chip %s, error code: %d\n",
2885 gc->label, ret);
2886 goto fail;
2887 }
2888 }
2889
2890 rockchip_interrupts_register(pdev, info);
2891
2892 return 0;
2893
2894 fail:
2895 for (--i, --bank; i >= 0; --i, --bank) {
2896 if (!bank->valid)
2897 continue;
2898 gpiochip_remove(&bank->gpio_chip);
2899 }
2900 return ret;
2901 }
2902
2903 static int rockchip_gpiolib_unregister(struct platform_device *pdev,
2904 struct rockchip_pinctrl *info)
2905 {
2906 struct rockchip_pin_ctrl *ctrl = info->ctrl;
2907 struct rockchip_pin_bank *bank = ctrl->pin_banks;
2908 int i;
2909
2910 for (i = 0; i < ctrl->nr_banks; ++i, ++bank) {
2911 if (!bank->valid)
2912 continue;
2913 gpiochip_remove(&bank->gpio_chip);
2914 }
2915
2916 return 0;
2917 }
2918
2919 static int rockchip_get_bank_data(struct rockchip_pin_bank *bank,
2920 struct rockchip_pinctrl *info)
2921 {
2922 struct resource res;
2923 void __iomem *base;
2924
2925 if (of_address_to_resource(bank->of_node, 0, &res)) {
2926 dev_err(info->dev, "cannot find IO resource for bank\n");
2927 return -ENOENT;
2928 }
2929
2930 bank->reg_base = devm_ioremap_resource(info->dev, &res);
2931 if (IS_ERR(bank->reg_base))
2932 return PTR_ERR(bank->reg_base);
2933
2934 /*
2935 * special case, where parts of the pull setting-registers are
2936 * part of the PMU register space
2937 */
2938 if (of_device_is_compatible(bank->of_node,
2939 "rockchip,rk3188-gpio-bank0")) {
2940 struct device_node *node;
2941
2942 node = of_parse_phandle(bank->of_node->parent,
2943 "rockchip,pmu", 0);
2944 if (!node) {
2945 if (of_address_to_resource(bank->of_node, 1, &res)) {
2946 dev_err(info->dev, "cannot find IO resource for bank\n");
2947 return -ENOENT;
2948 }
2949
2950 base = devm_ioremap_resource(info->dev, &res);
2951 if (IS_ERR(base))
2952 return PTR_ERR(base);
2953 rockchip_regmap_config.max_register =
2954 resource_size(&res) - 4;
2955 rockchip_regmap_config.name =
2956 "rockchip,rk3188-gpio-bank0-pull";
2957 bank->regmap_pull = devm_regmap_init_mmio(info->dev,
2958 base,
2959 &rockchip_regmap_config);
2960 }
2961 }
2962
2963 bank->irq = irq_of_parse_and_map(bank->of_node, 0);
2964
2965 bank->clk = of_clk_get(bank->of_node, 0);
2966 if (IS_ERR(bank->clk))
2967 return PTR_ERR(bank->clk);
2968
2969 return clk_prepare(bank->clk);
2970 }
2971
2972 static const struct of_device_id rockchip_pinctrl_dt_match[];
2973
2974 /* retrieve the soc specific data */
2975 static struct rockchip_pin_ctrl *rockchip_pinctrl_get_soc_data(
2976 struct rockchip_pinctrl *d,
2977 struct platform_device *pdev)
2978 {
2979 const struct of_device_id *match;
2980 struct device_node *node = pdev->dev.of_node;
2981 struct device_node *np;
2982 struct rockchip_pin_ctrl *ctrl;
2983 struct rockchip_pin_bank *bank;
2984 int grf_offs, pmu_offs, drv_grf_offs, drv_pmu_offs, i, j;
2985
2986 match = of_match_node(rockchip_pinctrl_dt_match, node);
2987 ctrl = (struct rockchip_pin_ctrl *)match->data;
2988
2989 for_each_child_of_node(node, np) {
2990 if (!of_find_property(np, "gpio-controller", NULL))
2991 continue;
2992
2993 bank = ctrl->pin_banks;
2994 for (i = 0; i < ctrl->nr_banks; ++i, ++bank) {
2995 if (!strcmp(bank->name, np->name)) {
2996 bank->of_node = np;
2997
2998 if (!rockchip_get_bank_data(bank, d))
2999 bank->valid = true;
3000
3001 break;
3002 }
3003 }
3004 }
3005
3006 grf_offs = ctrl->grf_mux_offset;
3007 pmu_offs = ctrl->pmu_mux_offset;
3008 drv_pmu_offs = ctrl->pmu_drv_offset;
3009 drv_grf_offs = ctrl->grf_drv_offset;
3010 bank = ctrl->pin_banks;
3011 for (i = 0; i < ctrl->nr_banks; ++i, ++bank) {
3012 int bank_pins = 0;
3013
3014 raw_spin_lock_init(&bank->slock);
3015 bank->drvdata = d;
3016 bank->pin_base = ctrl->nr_pins;
3017 ctrl->nr_pins += bank->nr_pins;
3018
3019 /* calculate iomux and drv offsets */
3020 for (j = 0; j < 4; j++) {
3021 struct rockchip_iomux *iom = &bank->iomux[j];
3022 struct rockchip_drv *drv = &bank->drv[j];
3023 int inc;
3024
3025 if (bank_pins >= bank->nr_pins)
3026 break;
3027
3028 /* preset iomux offset value, set new start value */
3029 if (iom->offset >= 0) {
3030 if (iom->type & IOMUX_SOURCE_PMU)
3031 pmu_offs = iom->offset;
3032 else
3033 grf_offs = iom->offset;
3034 } else { /* set current iomux offset */
3035 iom->offset = (iom->type & IOMUX_SOURCE_PMU) ?
3036 pmu_offs : grf_offs;
3037 }
3038
3039 /* preset drv offset value, set new start value */
3040 if (drv->offset >= 0) {
3041 if (iom->type & IOMUX_SOURCE_PMU)
3042 drv_pmu_offs = drv->offset;
3043 else
3044 drv_grf_offs = drv->offset;
3045 } else { /* set current drv offset */
3046 drv->offset = (iom->type & IOMUX_SOURCE_PMU) ?
3047 drv_pmu_offs : drv_grf_offs;
3048 }
3049
3050 dev_dbg(d->dev, "bank %d, iomux %d has iom_offset 0x%x drv_offset 0x%x\n",
3051 i, j, iom->offset, drv->offset);
3052
3053 /*
3054 * Increase offset according to iomux width.
3055 * 4bit iomux'es are spread over two registers.
3056 */
3057 inc = (iom->type & (IOMUX_WIDTH_4BIT |
3058 IOMUX_WIDTH_3BIT)) ? 8 : 4;
3059 if (iom->type & IOMUX_SOURCE_PMU)
3060 pmu_offs += inc;
3061 else
3062 grf_offs += inc;
3063
3064 /*
3065 * Increase offset according to drv width.
3066 * 3bit drive-strenth'es are spread over two registers.
3067 */
3068 if ((drv->drv_type == DRV_TYPE_IO_1V8_3V0_AUTO) ||
3069 (drv->drv_type == DRV_TYPE_IO_3V3_ONLY))
3070 inc = 8;
3071 else
3072 inc = 4;
3073
3074 if (iom->type & IOMUX_SOURCE_PMU)
3075 drv_pmu_offs += inc;
3076 else
3077 drv_grf_offs += inc;
3078
3079 bank_pins += 8;
3080 }
3081
3082 /* calculate the per-bank recalced_mask */
3083 for (j = 0; j < ctrl->niomux_recalced; j++) {
3084 int pin = 0;
3085
3086 if (ctrl->iomux_recalced[j].num == bank->bank_num) {
3087 pin = ctrl->iomux_recalced[j].pin;
3088 bank->recalced_mask |= BIT(pin);
3089 }
3090 }
3091
3092 /* calculate the per-bank route_mask */
3093 for (j = 0; j < ctrl->niomux_routes; j++) {
3094 int pin = 0;
3095
3096 if (ctrl->iomux_routes[j].bank_num == bank->bank_num) {
3097 pin = ctrl->iomux_routes[j].pin;
3098 bank->route_mask |= BIT(pin);
3099 }
3100 }
3101 }
3102
3103 return ctrl;
3104 }
3105
3106 #define RK3288_GRF_GPIO6C_IOMUX 0x64
3107 #define GPIO6C6_SEL_WRITE_ENABLE BIT(28)
3108
3109 static u32 rk3288_grf_gpio6c_iomux;
3110
3111 static int __maybe_unused rockchip_pinctrl_suspend(struct device *dev)
3112 {
3113 struct rockchip_pinctrl *info = dev_get_drvdata(dev);
3114 int ret = pinctrl_force_sleep(info->pctl_dev);
3115
3116 if (ret)
3117 return ret;
3118
3119 /*
3120 * RK3288 GPIO6_C6 mux would be modified by Maskrom when resume, so save
3121 * the setting here, and restore it at resume.
3122 */
3123 if (info->ctrl->type == RK3288) {
3124 ret = regmap_read(info->regmap_base, RK3288_GRF_GPIO6C_IOMUX,
3125 &rk3288_grf_gpio6c_iomux);
3126 if (ret) {
3127 pinctrl_force_default(info->pctl_dev);
3128 return ret;
3129 }
3130 }
3131
3132 return 0;
3133 }
3134
3135 static int __maybe_unused rockchip_pinctrl_resume(struct device *dev)
3136 {
3137 struct rockchip_pinctrl *info = dev_get_drvdata(dev);
3138 int ret = regmap_write(info->regmap_base, RK3288_GRF_GPIO6C_IOMUX,
3139 rk3288_grf_gpio6c_iomux |
3140 GPIO6C6_SEL_WRITE_ENABLE);
3141
3142 if (ret)
3143 return ret;
3144
3145 return pinctrl_force_default(info->pctl_dev);
3146 }
3147
3148 static SIMPLE_DEV_PM_OPS(rockchip_pinctrl_dev_pm_ops, rockchip_pinctrl_suspend,
3149 rockchip_pinctrl_resume);
3150
3151 static int rockchip_pinctrl_probe(struct platform_device *pdev)
3152 {
3153 struct rockchip_pinctrl *info;
3154 struct device *dev = &pdev->dev;
3155 struct rockchip_pin_ctrl *ctrl;
3156 struct device_node *np = pdev->dev.of_node, *node;
3157 struct resource *res;
3158 void __iomem *base;
3159 int ret;
3160
3161 if (!dev->of_node) {
3162 dev_err(dev, "device tree node not found\n");
3163 return -ENODEV;
3164 }
3165
3166 info = devm_kzalloc(dev, sizeof(struct rockchip_pinctrl), GFP_KERNEL);
3167 if (!info)
3168 return -ENOMEM;
3169
3170 info->dev = dev;
3171
3172 ctrl = rockchip_pinctrl_get_soc_data(info, pdev);
3173 if (!ctrl) {
3174 dev_err(dev, "driver data not available\n");
3175 return -EINVAL;
3176 }
3177 info->ctrl = ctrl;
3178
3179 node = of_parse_phandle(np, "rockchip,grf", 0);
3180 if (node) {
3181 info->regmap_base = syscon_node_to_regmap(node);
3182 if (IS_ERR(info->regmap_base))
3183 return PTR_ERR(info->regmap_base);
3184 } else {
3185 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
3186 base = devm_ioremap_resource(&pdev->dev, res);
3187 if (IS_ERR(base))
3188 return PTR_ERR(base);
3189
3190 rockchip_regmap_config.max_register = resource_size(res) - 4;
3191 rockchip_regmap_config.name = "rockchip,pinctrl";
3192 info->regmap_base = devm_regmap_init_mmio(&pdev->dev, base,
3193 &rockchip_regmap_config);
3194
3195 /* to check for the old dt-bindings */
3196 info->reg_size = resource_size(res);
3197
3198 /* Honor the old binding, with pull registers as 2nd resource */
3199 if (ctrl->type == RK3188 && info->reg_size < 0x200) {
3200 res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
3201 base = devm_ioremap_resource(&pdev->dev, res);
3202 if (IS_ERR(base))
3203 return PTR_ERR(base);
3204
3205 rockchip_regmap_config.max_register =
3206 resource_size(res) - 4;
3207 rockchip_regmap_config.name = "rockchip,pinctrl-pull";
3208 info->regmap_pull = devm_regmap_init_mmio(&pdev->dev,
3209 base,
3210 &rockchip_regmap_config);
3211 }
3212 }
3213
3214 /* try to find the optional reference to the pmu syscon */
3215 node = of_parse_phandle(np, "rockchip,pmu", 0);
3216 if (node) {
3217 info->regmap_pmu = syscon_node_to_regmap(node);
3218 if (IS_ERR(info->regmap_pmu))
3219 return PTR_ERR(info->regmap_pmu);
3220 }
3221
3222 ret = rockchip_gpiolib_register(pdev, info);
3223 if (ret)
3224 return ret;
3225
3226 ret = rockchip_pinctrl_register(pdev, info);
3227 if (ret) {
3228 rockchip_gpiolib_unregister(pdev, info);
3229 return ret;
3230 }
3231
3232 platform_set_drvdata(pdev, info);
3233
3234 return 0;
3235 }
3236
3237 static struct rockchip_pin_bank rv1108_pin_banks[] = {
3238 PIN_BANK_IOMUX_FLAGS(0, 32, "gpio0", IOMUX_SOURCE_PMU,
3239 IOMUX_SOURCE_PMU,
3240 IOMUX_SOURCE_PMU,
3241 IOMUX_SOURCE_PMU),
3242 PIN_BANK_IOMUX_FLAGS(1, 32, "gpio1", 0, 0, 0, 0),
3243 PIN_BANK_IOMUX_FLAGS(2, 32, "gpio2", 0, 0, 0, 0),
3244 PIN_BANK_IOMUX_FLAGS(3, 32, "gpio3", 0, 0, 0, 0),
3245 };
3246
3247 static struct rockchip_pin_ctrl rv1108_pin_ctrl = {
3248 .pin_banks = rv1108_pin_banks,
3249 .nr_banks = ARRAY_SIZE(rv1108_pin_banks),
3250 .label = "RV1108-GPIO",
3251 .type = RV1108,
3252 .grf_mux_offset = 0x10,
3253 .pmu_mux_offset = 0x0,
3254 .iomux_recalced = rv1108_mux_recalced_data,
3255 .niomux_recalced = ARRAY_SIZE(rv1108_mux_recalced_data),
3256 .pull_calc_reg = rv1108_calc_pull_reg_and_bit,
3257 .drv_calc_reg = rv1108_calc_drv_reg_and_bit,
3258 .schmitt_calc_reg = rv1108_calc_schmitt_reg_and_bit,
3259 };
3260
3261 static struct rockchip_pin_bank rk2928_pin_banks[] = {
3262 PIN_BANK(0, 32, "gpio0"),
3263 PIN_BANK(1, 32, "gpio1"),
3264 PIN_BANK(2, 32, "gpio2"),
3265 PIN_BANK(3, 32, "gpio3"),
3266 };
3267
3268 static struct rockchip_pin_ctrl rk2928_pin_ctrl = {
3269 .pin_banks = rk2928_pin_banks,
3270 .nr_banks = ARRAY_SIZE(rk2928_pin_banks),
3271 .label = "RK2928-GPIO",
3272 .type = RK2928,
3273 .grf_mux_offset = 0xa8,
3274 .pull_calc_reg = rk2928_calc_pull_reg_and_bit,
3275 };
3276
3277 static struct rockchip_pin_bank rk3036_pin_banks[] = {
3278 PIN_BANK(0, 32, "gpio0"),
3279 PIN_BANK(1, 32, "gpio1"),
3280 PIN_BANK(2, 32, "gpio2"),
3281 };
3282
3283 static struct rockchip_pin_ctrl rk3036_pin_ctrl = {
3284 .pin_banks = rk3036_pin_banks,
3285 .nr_banks = ARRAY_SIZE(rk3036_pin_banks),
3286 .label = "RK3036-GPIO",
3287 .type = RK2928,
3288 .grf_mux_offset = 0xa8,
3289 .pull_calc_reg = rk2928_calc_pull_reg_and_bit,
3290 };
3291
3292 static struct rockchip_pin_bank rk3066a_pin_banks[] = {
3293 PIN_BANK(0, 32, "gpio0"),
3294 PIN_BANK(1, 32, "gpio1"),
3295 PIN_BANK(2, 32, "gpio2"),
3296 PIN_BANK(3, 32, "gpio3"),
3297 PIN_BANK(4, 32, "gpio4"),
3298 PIN_BANK(6, 16, "gpio6"),
3299 };
3300
3301 static struct rockchip_pin_ctrl rk3066a_pin_ctrl = {
3302 .pin_banks = rk3066a_pin_banks,
3303 .nr_banks = ARRAY_SIZE(rk3066a_pin_banks),
3304 .label = "RK3066a-GPIO",
3305 .type = RK2928,
3306 .grf_mux_offset = 0xa8,
3307 .pull_calc_reg = rk2928_calc_pull_reg_and_bit,
3308 };
3309
3310 static struct rockchip_pin_bank rk3066b_pin_banks[] = {
3311 PIN_BANK(0, 32, "gpio0"),
3312 PIN_BANK(1, 32, "gpio1"),
3313 PIN_BANK(2, 32, "gpio2"),
3314 PIN_BANK(3, 32, "gpio3"),
3315 };
3316
3317 static struct rockchip_pin_ctrl rk3066b_pin_ctrl = {
3318 .pin_banks = rk3066b_pin_banks,
3319 .nr_banks = ARRAY_SIZE(rk3066b_pin_banks),
3320 .label = "RK3066b-GPIO",
3321 .type = RK3066B,
3322 .grf_mux_offset = 0x60,
3323 };
3324
3325 static struct rockchip_pin_bank rk3128_pin_banks[] = {
3326 PIN_BANK(0, 32, "gpio0"),
3327 PIN_BANK(1, 32, "gpio1"),
3328 PIN_BANK(2, 32, "gpio2"),
3329 PIN_BANK(3, 32, "gpio3"),
3330 };
3331
3332 static struct rockchip_pin_ctrl rk3128_pin_ctrl = {
3333 .pin_banks = rk3128_pin_banks,
3334 .nr_banks = ARRAY_SIZE(rk3128_pin_banks),
3335 .label = "RK3128-GPIO",
3336 .type = RK3128,
3337 .grf_mux_offset = 0xa8,
3338 .iomux_recalced = rk3128_mux_recalced_data,
3339 .niomux_recalced = ARRAY_SIZE(rk3128_mux_recalced_data),
3340 .iomux_routes = rk3128_mux_route_data,
3341 .niomux_routes = ARRAY_SIZE(rk3128_mux_route_data),
3342 .pull_calc_reg = rk3128_calc_pull_reg_and_bit,
3343 };
3344
3345 static struct rockchip_pin_bank rk3188_pin_banks[] = {
3346 PIN_BANK_IOMUX_FLAGS(0, 32, "gpio0", IOMUX_GPIO_ONLY, 0, 0, 0),
3347 PIN_BANK(1, 32, "gpio1"),
3348 PIN_BANK(2, 32, "gpio2"),
3349 PIN_BANK(3, 32, "gpio3"),
3350 };
3351
3352 static struct rockchip_pin_ctrl rk3188_pin_ctrl = {
3353 .pin_banks = rk3188_pin_banks,
3354 .nr_banks = ARRAY_SIZE(rk3188_pin_banks),
3355 .label = "RK3188-GPIO",
3356 .type = RK3188,
3357 .grf_mux_offset = 0x60,
3358 .pull_calc_reg = rk3188_calc_pull_reg_and_bit,
3359 };
3360
3361 static struct rockchip_pin_bank rk3228_pin_banks[] = {
3362 PIN_BANK(0, 32, "gpio0"),
3363 PIN_BANK(1, 32, "gpio1"),
3364 PIN_BANK(2, 32, "gpio2"),
3365 PIN_BANK(3, 32, "gpio3"),
3366 };
3367
3368 static struct rockchip_pin_ctrl rk3228_pin_ctrl = {
3369 .pin_banks = rk3228_pin_banks,
3370 .nr_banks = ARRAY_SIZE(rk3228_pin_banks),
3371 .label = "RK3228-GPIO",
3372 .type = RK3288,
3373 .grf_mux_offset = 0x0,
3374 .iomux_routes = rk3228_mux_route_data,
3375 .niomux_routes = ARRAY_SIZE(rk3228_mux_route_data),
3376 .pull_calc_reg = rk3228_calc_pull_reg_and_bit,
3377 .drv_calc_reg = rk3228_calc_drv_reg_and_bit,
3378 };
3379
3380 static struct rockchip_pin_bank rk3288_pin_banks[] = {
3381 PIN_BANK_IOMUX_FLAGS(0, 24, "gpio0", IOMUX_SOURCE_PMU,
3382 IOMUX_SOURCE_PMU,
3383 IOMUX_SOURCE_PMU,
3384 IOMUX_UNROUTED
3385 ),
3386 PIN_BANK_IOMUX_FLAGS(1, 32, "gpio1", IOMUX_UNROUTED,
3387 IOMUX_UNROUTED,
3388 IOMUX_UNROUTED,
3389 0
3390 ),
3391 PIN_BANK_IOMUX_FLAGS(2, 32, "gpio2", 0, 0, 0, IOMUX_UNROUTED),
3392 PIN_BANK_IOMUX_FLAGS(3, 32, "gpio3", 0, 0, 0, IOMUX_WIDTH_4BIT),
3393 PIN_BANK_IOMUX_FLAGS(4, 32, "gpio4", IOMUX_WIDTH_4BIT,
3394 IOMUX_WIDTH_4BIT,
3395 0,
3396 0
3397 ),
3398 PIN_BANK_IOMUX_FLAGS(5, 32, "gpio5", IOMUX_UNROUTED,
3399 0,
3400 0,
3401 IOMUX_UNROUTED
3402 ),
3403 PIN_BANK_IOMUX_FLAGS(6, 32, "gpio6", 0, 0, 0, IOMUX_UNROUTED),
3404 PIN_BANK_IOMUX_FLAGS(7, 32, "gpio7", 0,
3405 0,
3406 IOMUX_WIDTH_4BIT,
3407 IOMUX_UNROUTED
3408 ),
3409 PIN_BANK(8, 16, "gpio8"),
3410 };
3411
3412 static struct rockchip_pin_ctrl rk3288_pin_ctrl = {
3413 .pin_banks = rk3288_pin_banks,
3414 .nr_banks = ARRAY_SIZE(rk3288_pin_banks),
3415 .label = "RK3288-GPIO",
3416 .type = RK3288,
3417 .grf_mux_offset = 0x0,
3418 .pmu_mux_offset = 0x84,
3419 .iomux_routes = rk3288_mux_route_data,
3420 .niomux_routes = ARRAY_SIZE(rk3288_mux_route_data),
3421 .pull_calc_reg = rk3288_calc_pull_reg_and_bit,
3422 .drv_calc_reg = rk3288_calc_drv_reg_and_bit,
3423 };
3424
3425 static struct rockchip_pin_bank rk3328_pin_banks[] = {
3426 PIN_BANK_IOMUX_FLAGS(0, 32, "gpio0", 0, 0, 0, 0),
3427 PIN_BANK_IOMUX_FLAGS(1, 32, "gpio1", 0, 0, 0, 0),
3428 PIN_BANK_IOMUX_FLAGS(2, 32, "gpio2", 0,
3429 IOMUX_WIDTH_3BIT,
3430 IOMUX_WIDTH_3BIT,
3431 0),
3432 PIN_BANK_IOMUX_FLAGS(3, 32, "gpio3",
3433 IOMUX_WIDTH_3BIT,
3434 IOMUX_WIDTH_3BIT,
3435 0,
3436 0),
3437 };
3438
3439 static struct rockchip_pin_ctrl rk3328_pin_ctrl = {
3440 .pin_banks = rk3328_pin_banks,
3441 .nr_banks = ARRAY_SIZE(rk3328_pin_banks),
3442 .label = "RK3328-GPIO",
3443 .type = RK3288,
3444 .grf_mux_offset = 0x0,
3445 .iomux_recalced = rk3328_mux_recalced_data,
3446 .niomux_recalced = ARRAY_SIZE(rk3328_mux_recalced_data),
3447 .iomux_routes = rk3328_mux_route_data,
3448 .niomux_routes = ARRAY_SIZE(rk3328_mux_route_data),
3449 .pull_calc_reg = rk3228_calc_pull_reg_and_bit,
3450 .drv_calc_reg = rk3228_calc_drv_reg_and_bit,
3451 .schmitt_calc_reg = rk3328_calc_schmitt_reg_and_bit,
3452 };
3453
3454 static struct rockchip_pin_bank rk3368_pin_banks[] = {
3455 PIN_BANK_IOMUX_FLAGS(0, 32, "gpio0", IOMUX_SOURCE_PMU,
3456 IOMUX_SOURCE_PMU,
3457 IOMUX_SOURCE_PMU,
3458 IOMUX_SOURCE_PMU
3459 ),
3460 PIN_BANK(1, 32, "gpio1"),
3461 PIN_BANK(2, 32, "gpio2"),
3462 PIN_BANK(3, 32, "gpio3"),
3463 };
3464
3465 static struct rockchip_pin_ctrl rk3368_pin_ctrl = {
3466 .pin_banks = rk3368_pin_banks,
3467 .nr_banks = ARRAY_SIZE(rk3368_pin_banks),
3468 .label = "RK3368-GPIO",
3469 .type = RK3368,
3470 .grf_mux_offset = 0x0,
3471 .pmu_mux_offset = 0x0,
3472 .pull_calc_reg = rk3368_calc_pull_reg_and_bit,
3473 .drv_calc_reg = rk3368_calc_drv_reg_and_bit,
3474 };
3475
3476 static struct rockchip_pin_bank rk3399_pin_banks[] = {
3477 PIN_BANK_IOMUX_FLAGS_DRV_FLAGS_OFFSET_PULL_FLAGS(0, 32, "gpio0",
3478 IOMUX_SOURCE_PMU,
3479 IOMUX_SOURCE_PMU,
3480 IOMUX_SOURCE_PMU,
3481 IOMUX_SOURCE_PMU,
3482 DRV_TYPE_IO_1V8_ONLY,
3483 DRV_TYPE_IO_1V8_ONLY,
3484 DRV_TYPE_IO_DEFAULT,
3485 DRV_TYPE_IO_DEFAULT,
3486 0x80,
3487 0x88,
3488 -1,
3489 -1,
3490 PULL_TYPE_IO_1V8_ONLY,
3491 PULL_TYPE_IO_1V8_ONLY,
3492 PULL_TYPE_IO_DEFAULT,
3493 PULL_TYPE_IO_DEFAULT
3494 ),
3495 PIN_BANK_IOMUX_DRV_FLAGS_OFFSET(1, 32, "gpio1", IOMUX_SOURCE_PMU,
3496 IOMUX_SOURCE_PMU,
3497 IOMUX_SOURCE_PMU,
3498 IOMUX_SOURCE_PMU,
3499 DRV_TYPE_IO_1V8_OR_3V0,
3500 DRV_TYPE_IO_1V8_OR_3V0,
3501 DRV_TYPE_IO_1V8_OR_3V0,
3502 DRV_TYPE_IO_1V8_OR_3V0,
3503 0xa0,
3504 0xa8,
3505 0xb0,
3506 0xb8
3507 ),
3508 PIN_BANK_DRV_FLAGS_PULL_FLAGS(2, 32, "gpio2", DRV_TYPE_IO_1V8_OR_3V0,
3509 DRV_TYPE_IO_1V8_OR_3V0,
3510 DRV_TYPE_IO_1V8_ONLY,
3511 DRV_TYPE_IO_1V8_ONLY,
3512 PULL_TYPE_IO_DEFAULT,
3513 PULL_TYPE_IO_DEFAULT,
3514 PULL_TYPE_IO_1V8_ONLY,
3515 PULL_TYPE_IO_1V8_ONLY
3516 ),
3517 PIN_BANK_DRV_FLAGS(3, 32, "gpio3", DRV_TYPE_IO_3V3_ONLY,
3518 DRV_TYPE_IO_3V3_ONLY,
3519 DRV_TYPE_IO_3V3_ONLY,
3520 DRV_TYPE_IO_1V8_OR_3V0
3521 ),
3522 PIN_BANK_DRV_FLAGS(4, 32, "gpio4", DRV_TYPE_IO_1V8_OR_3V0,
3523 DRV_TYPE_IO_1V8_3V0_AUTO,
3524 DRV_TYPE_IO_1V8_OR_3V0,
3525 DRV_TYPE_IO_1V8_OR_3V0
3526 ),
3527 };
3528
3529 static struct rockchip_pin_ctrl rk3399_pin_ctrl = {
3530 .pin_banks = rk3399_pin_banks,
3531 .nr_banks = ARRAY_SIZE(rk3399_pin_banks),
3532 .label = "RK3399-GPIO",
3533 .type = RK3399,
3534 .grf_mux_offset = 0xe000,
3535 .pmu_mux_offset = 0x0,
3536 .grf_drv_offset = 0xe100,
3537 .pmu_drv_offset = 0x80,
3538 .iomux_routes = rk3399_mux_route_data,
3539 .niomux_routes = ARRAY_SIZE(rk3399_mux_route_data),
3540 .pull_calc_reg = rk3399_calc_pull_reg_and_bit,
3541 .drv_calc_reg = rk3399_calc_drv_reg_and_bit,
3542 };
3543
3544 static const struct of_device_id rockchip_pinctrl_dt_match[] = {
3545 { .compatible = "rockchip,rv1108-pinctrl",
3546 .data = &rv1108_pin_ctrl },
3547 { .compatible = "rockchip,rk2928-pinctrl",
3548 .data = &rk2928_pin_ctrl },
3549 { .compatible = "rockchip,rk3036-pinctrl",
3550 .data = &rk3036_pin_ctrl },
3551 { .compatible = "rockchip,rk3066a-pinctrl",
3552 .data = &rk3066a_pin_ctrl },
3553 { .compatible = "rockchip,rk3066b-pinctrl",
3554 .data = &rk3066b_pin_ctrl },
3555 { .compatible = "rockchip,rk3128-pinctrl",
3556 .data = (void *)&rk3128_pin_ctrl },
3557 { .compatible = "rockchip,rk3188-pinctrl",
3558 .data = &rk3188_pin_ctrl },
3559 { .compatible = "rockchip,rk3228-pinctrl",
3560 .data = &rk3228_pin_ctrl },
3561 { .compatible = "rockchip,rk3288-pinctrl",
3562 .data = &rk3288_pin_ctrl },
3563 { .compatible = "rockchip,rk3328-pinctrl",
3564 .data = &rk3328_pin_ctrl },
3565 { .compatible = "rockchip,rk3368-pinctrl",
3566 .data = &rk3368_pin_ctrl },
3567 { .compatible = "rockchip,rk3399-pinctrl",
3568 .data = &rk3399_pin_ctrl },
3569 {},
3570 };
3571
3572 static struct platform_driver rockchip_pinctrl_driver = {
3573 .probe = rockchip_pinctrl_probe,
3574 .driver = {
3575 .name = "rockchip-pinctrl",
3576 .pm = &rockchip_pinctrl_dev_pm_ops,
3577 .of_match_table = rockchip_pinctrl_dt_match,
3578 },
3579 };
3580
3581 static int __init rockchip_pinctrl_drv_register(void)
3582 {
3583 return platform_driver_register(&rockchip_pinctrl_driver);
3584 }
3585 postcore_initcall(rockchip_pinctrl_drv_register);
Linux with added FPC-III support