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[mirror_ubuntu-zesty-kernel.git] / drivers / pinctrl / pinctrl-rockchip.c
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 RK1108,
63 RK2928,
64 RK3066B,
65 RK3188,
66 RK3288,
67 RK3368,
68 RK3399,
69 };
70
71 /**
72 * Encode variants of iomux registers into a type variable
73 */
74 #define IOMUX_GPIO_ONLY BIT(0)
75 #define IOMUX_WIDTH_4BIT BIT(1)
76 #define IOMUX_SOURCE_PMU BIT(2)
77 #define IOMUX_UNROUTED BIT(3)
78
79 /**
80 * @type: iomux variant using IOMUX_* constants
81 * @offset: if initialized to -1 it will be autocalculated, by specifying
82 * an initial offset value the relevant source offset can be reset
83 * to a new value for autocalculating the following iomux registers.
84 */
85 struct rockchip_iomux {
86 int type;
87 int offset;
88 };
89
90 /**
91 * enum type index corresponding to rockchip_perpin_drv_list arrays index.
92 */
93 enum rockchip_pin_drv_type {
94 DRV_TYPE_IO_DEFAULT = 0,
95 DRV_TYPE_IO_1V8_OR_3V0,
96 DRV_TYPE_IO_1V8_ONLY,
97 DRV_TYPE_IO_1V8_3V0_AUTO,
98 DRV_TYPE_IO_3V3_ONLY,
99 DRV_TYPE_MAX
100 };
101
102 /**
103 * enum type index corresponding to rockchip_pull_list arrays index.
104 */
105 enum rockchip_pin_pull_type {
106 PULL_TYPE_IO_DEFAULT = 0,
107 PULL_TYPE_IO_1V8_ONLY,
108 PULL_TYPE_MAX
109 };
110
111 /**
112 * @drv_type: drive strength variant using rockchip_perpin_drv_type
113 * @offset: if initialized to -1 it will be autocalculated, by specifying
114 * an initial offset value the relevant source offset can be reset
115 * to a new value for autocalculating the following drive strength
116 * registers. if used chips own cal_drv func instead to calculate
117 * registers offset, the variant could be ignored.
118 */
119 struct rockchip_drv {
120 enum rockchip_pin_drv_type drv_type;
121 int offset;
122 };
123
124 /**
125 * @reg_base: register base of the gpio bank
126 * @reg_pull: optional separate register for additional pull settings
127 * @clk: clock of the gpio bank
128 * @irq: interrupt of the gpio bank
129 * @saved_masks: Saved content of GPIO_INTEN at suspend time.
130 * @pin_base: first pin number
131 * @nr_pins: number of pins in this bank
132 * @name: name of the bank
133 * @bank_num: number of the bank, to account for holes
134 * @iomux: array describing the 4 iomux sources of the bank
135 * @drv: array describing the 4 drive strength sources of the bank
136 * @pull_type: array describing the 4 pull type sources of the bank
137 * @valid: are all necessary informations present
138 * @of_node: dt node of this bank
139 * @drvdata: common pinctrl basedata
140 * @domain: irqdomain of the gpio bank
141 * @gpio_chip: gpiolib chip
142 * @grange: gpio range
143 * @slock: spinlock for the gpio bank
144 */
145 struct rockchip_pin_bank {
146 void __iomem *reg_base;
147 struct regmap *regmap_pull;
148 struct clk *clk;
149 int irq;
150 u32 saved_masks;
151 u32 pin_base;
152 u8 nr_pins;
153 char *name;
154 u8 bank_num;
155 struct rockchip_iomux iomux[4];
156 struct rockchip_drv drv[4];
157 enum rockchip_pin_pull_type pull_type[4];
158 bool valid;
159 struct device_node *of_node;
160 struct rockchip_pinctrl *drvdata;
161 struct irq_domain *domain;
162 struct gpio_chip gpio_chip;
163 struct pinctrl_gpio_range grange;
164 spinlock_t slock;
165 u32 toggle_edge_mode;
166 };
167
168 #define PIN_BANK(id, pins, label) \
169 { \
170 .bank_num = id, \
171 .nr_pins = pins, \
172 .name = label, \
173 .iomux = { \
174 { .offset = -1 }, \
175 { .offset = -1 }, \
176 { .offset = -1 }, \
177 { .offset = -1 }, \
178 }, \
179 }
180
181 #define PIN_BANK_IOMUX_FLAGS(id, pins, label, iom0, iom1, iom2, iom3) \
182 { \
183 .bank_num = id, \
184 .nr_pins = pins, \
185 .name = label, \
186 .iomux = { \
187 { .type = iom0, .offset = -1 }, \
188 { .type = iom1, .offset = -1 }, \
189 { .type = iom2, .offset = -1 }, \
190 { .type = iom3, .offset = -1 }, \
191 }, \
192 }
193
194 #define PIN_BANK_DRV_FLAGS(id, pins, label, type0, type1, type2, type3) \
195 { \
196 .bank_num = id, \
197 .nr_pins = pins, \
198 .name = label, \
199 .iomux = { \
200 { .offset = -1 }, \
201 { .offset = -1 }, \
202 { .offset = -1 }, \
203 { .offset = -1 }, \
204 }, \
205 .drv = { \
206 { .drv_type = type0, .offset = -1 }, \
207 { .drv_type = type1, .offset = -1 }, \
208 { .drv_type = type2, .offset = -1 }, \
209 { .drv_type = type3, .offset = -1 }, \
210 }, \
211 }
212
213 #define PIN_BANK_DRV_FLAGS_PULL_FLAGS(id, pins, label, drv0, drv1, \
214 drv2, drv3, pull0, pull1, \
215 pull2, pull3) \
216 { \
217 .bank_num = id, \
218 .nr_pins = pins, \
219 .name = label, \
220 .iomux = { \
221 { .offset = -1 }, \
222 { .offset = -1 }, \
223 { .offset = -1 }, \
224 { .offset = -1 }, \
225 }, \
226 .drv = { \
227 { .drv_type = drv0, .offset = -1 }, \
228 { .drv_type = drv1, .offset = -1 }, \
229 { .drv_type = drv2, .offset = -1 }, \
230 { .drv_type = drv3, .offset = -1 }, \
231 }, \
232 .pull_type[0] = pull0, \
233 .pull_type[1] = pull1, \
234 .pull_type[2] = pull2, \
235 .pull_type[3] = pull3, \
236 }
237
238 #define PIN_BANK_IOMUX_DRV_FLAGS_OFFSET(id, pins, label, iom0, iom1, \
239 iom2, iom3, drv0, drv1, drv2, \
240 drv3, offset0, offset1, \
241 offset2, offset3) \
242 { \
243 .bank_num = id, \
244 .nr_pins = pins, \
245 .name = label, \
246 .iomux = { \
247 { .type = iom0, .offset = -1 }, \
248 { .type = iom1, .offset = -1 }, \
249 { .type = iom2, .offset = -1 }, \
250 { .type = iom3, .offset = -1 }, \
251 }, \
252 .drv = { \
253 { .drv_type = drv0, .offset = offset0 }, \
254 { .drv_type = drv1, .offset = offset1 }, \
255 { .drv_type = drv2, .offset = offset2 }, \
256 { .drv_type = drv3, .offset = offset3 }, \
257 }, \
258 }
259
260 #define PIN_BANK_IOMUX_FLAGS_DRV_FLAGS_OFFSET_PULL_FLAGS(id, pins, \
261 label, iom0, iom1, iom2, \
262 iom3, drv0, drv1, drv2, \
263 drv3, offset0, offset1, \
264 offset2, offset3, pull0, \
265 pull1, pull2, pull3) \
266 { \
267 .bank_num = id, \
268 .nr_pins = pins, \
269 .name = label, \
270 .iomux = { \
271 { .type = iom0, .offset = -1 }, \
272 { .type = iom1, .offset = -1 }, \
273 { .type = iom2, .offset = -1 }, \
274 { .type = iom3, .offset = -1 }, \
275 }, \
276 .drv = { \
277 { .drv_type = drv0, .offset = offset0 }, \
278 { .drv_type = drv1, .offset = offset1 }, \
279 { .drv_type = drv2, .offset = offset2 }, \
280 { .drv_type = drv3, .offset = offset3 }, \
281 }, \
282 .pull_type[0] = pull0, \
283 .pull_type[1] = pull1, \
284 .pull_type[2] = pull2, \
285 .pull_type[3] = pull3, \
286 }
287
288 /**
289 */
290 struct rockchip_pin_ctrl {
291 struct rockchip_pin_bank *pin_banks;
292 u32 nr_banks;
293 u32 nr_pins;
294 char *label;
295 enum rockchip_pinctrl_type type;
296 int grf_mux_offset;
297 int pmu_mux_offset;
298 int grf_drv_offset;
299 int pmu_drv_offset;
300
301 void (*pull_calc_reg)(struct rockchip_pin_bank *bank,
302 int pin_num, struct regmap **regmap,
303 int *reg, u8 *bit);
304 void (*drv_calc_reg)(struct rockchip_pin_bank *bank,
305 int pin_num, struct regmap **regmap,
306 int *reg, u8 *bit);
307 };
308
309 struct rockchip_pin_config {
310 unsigned int func;
311 unsigned long *configs;
312 unsigned int nconfigs;
313 };
314
315 /**
316 * struct rockchip_pin_group: represent group of pins of a pinmux function.
317 * @name: name of the pin group, used to lookup the group.
318 * @pins: the pins included in this group.
319 * @npins: number of pins included in this group.
320 * @func: the mux function number to be programmed when selected.
321 * @configs: the config values to be set for each pin
322 * @nconfigs: number of configs for each pin
323 */
324 struct rockchip_pin_group {
325 const char *name;
326 unsigned int npins;
327 unsigned int *pins;
328 struct rockchip_pin_config *data;
329 };
330
331 /**
332 * struct rockchip_pmx_func: represent a pin function.
333 * @name: name of the pin function, used to lookup the function.
334 * @groups: one or more names of pin groups that provide this function.
335 * @num_groups: number of groups included in @groups.
336 */
337 struct rockchip_pmx_func {
338 const char *name;
339 const char **groups;
340 u8 ngroups;
341 };
342
343 struct rockchip_pinctrl {
344 struct regmap *regmap_base;
345 int reg_size;
346 struct regmap *regmap_pull;
347 struct regmap *regmap_pmu;
348 struct device *dev;
349 struct rockchip_pin_ctrl *ctrl;
350 struct pinctrl_desc pctl;
351 struct pinctrl_dev *pctl_dev;
352 struct rockchip_pin_group *groups;
353 unsigned int ngroups;
354 struct rockchip_pmx_func *functions;
355 unsigned int nfunctions;
356 };
357
358 static struct regmap_config rockchip_regmap_config = {
359 .reg_bits = 32,
360 .val_bits = 32,
361 .reg_stride = 4,
362 };
363
364 static inline const struct rockchip_pin_group *pinctrl_name_to_group(
365 const struct rockchip_pinctrl *info,
366 const char *name)
367 {
368 int i;
369
370 for (i = 0; i < info->ngroups; i++) {
371 if (!strcmp(info->groups[i].name, name))
372 return &info->groups[i];
373 }
374
375 return NULL;
376 }
377
378 /*
379 * given a pin number that is local to a pin controller, find out the pin bank
380 * and the register base of the pin bank.
381 */
382 static struct rockchip_pin_bank *pin_to_bank(struct rockchip_pinctrl *info,
383 unsigned pin)
384 {
385 struct rockchip_pin_bank *b = info->ctrl->pin_banks;
386
387 while (pin >= (b->pin_base + b->nr_pins))
388 b++;
389
390 return b;
391 }
392
393 static struct rockchip_pin_bank *bank_num_to_bank(
394 struct rockchip_pinctrl *info,
395 unsigned num)
396 {
397 struct rockchip_pin_bank *b = info->ctrl->pin_banks;
398 int i;
399
400 for (i = 0; i < info->ctrl->nr_banks; i++, b++) {
401 if (b->bank_num == num)
402 return b;
403 }
404
405 return ERR_PTR(-EINVAL);
406 }
407
408 /*
409 * Pinctrl_ops handling
410 */
411
412 static int rockchip_get_groups_count(struct pinctrl_dev *pctldev)
413 {
414 struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
415
416 return info->ngroups;
417 }
418
419 static const char *rockchip_get_group_name(struct pinctrl_dev *pctldev,
420 unsigned selector)
421 {
422 struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
423
424 return info->groups[selector].name;
425 }
426
427 static int rockchip_get_group_pins(struct pinctrl_dev *pctldev,
428 unsigned selector, const unsigned **pins,
429 unsigned *npins)
430 {
431 struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
432
433 if (selector >= info->ngroups)
434 return -EINVAL;
435
436 *pins = info->groups[selector].pins;
437 *npins = info->groups[selector].npins;
438
439 return 0;
440 }
441
442 static int rockchip_dt_node_to_map(struct pinctrl_dev *pctldev,
443 struct device_node *np,
444 struct pinctrl_map **map, unsigned *num_maps)
445 {
446 struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
447 const struct rockchip_pin_group *grp;
448 struct pinctrl_map *new_map;
449 struct device_node *parent;
450 int map_num = 1;
451 int i;
452
453 /*
454 * first find the group of this node and check if we need to create
455 * config maps for pins
456 */
457 grp = pinctrl_name_to_group(info, np->name);
458 if (!grp) {
459 dev_err(info->dev, "unable to find group for node %s\n",
460 np->name);
461 return -EINVAL;
462 }
463
464 map_num += grp->npins;
465 new_map = devm_kzalloc(pctldev->dev, sizeof(*new_map) * map_num,
466 GFP_KERNEL);
467 if (!new_map)
468 return -ENOMEM;
469
470 *map = new_map;
471 *num_maps = map_num;
472
473 /* create mux map */
474 parent = of_get_parent(np);
475 if (!parent) {
476 devm_kfree(pctldev->dev, new_map);
477 return -EINVAL;
478 }
479 new_map[0].type = PIN_MAP_TYPE_MUX_GROUP;
480 new_map[0].data.mux.function = parent->name;
481 new_map[0].data.mux.group = np->name;
482 of_node_put(parent);
483
484 /* create config map */
485 new_map++;
486 for (i = 0; i < grp->npins; i++) {
487 new_map[i].type = PIN_MAP_TYPE_CONFIGS_PIN;
488 new_map[i].data.configs.group_or_pin =
489 pin_get_name(pctldev, grp->pins[i]);
490 new_map[i].data.configs.configs = grp->data[i].configs;
491 new_map[i].data.configs.num_configs = grp->data[i].nconfigs;
492 }
493
494 dev_dbg(pctldev->dev, "maps: function %s group %s num %d\n",
495 (*map)->data.mux.function, (*map)->data.mux.group, map_num);
496
497 return 0;
498 }
499
500 static void rockchip_dt_free_map(struct pinctrl_dev *pctldev,
501 struct pinctrl_map *map, unsigned num_maps)
502 {
503 }
504
505 static const struct pinctrl_ops rockchip_pctrl_ops = {
506 .get_groups_count = rockchip_get_groups_count,
507 .get_group_name = rockchip_get_group_name,
508 .get_group_pins = rockchip_get_group_pins,
509 .dt_node_to_map = rockchip_dt_node_to_map,
510 .dt_free_map = rockchip_dt_free_map,
511 };
512
513 /*
514 * Hardware access
515 */
516
517 static int rockchip_get_mux(struct rockchip_pin_bank *bank, int pin)
518 {
519 struct rockchip_pinctrl *info = bank->drvdata;
520 int iomux_num = (pin / 8);
521 struct regmap *regmap;
522 unsigned int val;
523 int reg, ret, mask;
524 u8 bit;
525
526 if (iomux_num > 3)
527 return -EINVAL;
528
529 if (bank->iomux[iomux_num].type & IOMUX_UNROUTED) {
530 dev_err(info->dev, "pin %d is unrouted\n", pin);
531 return -EINVAL;
532 }
533
534 if (bank->iomux[iomux_num].type & IOMUX_GPIO_ONLY)
535 return RK_FUNC_GPIO;
536
537 regmap = (bank->iomux[iomux_num].type & IOMUX_SOURCE_PMU)
538 ? info->regmap_pmu : info->regmap_base;
539
540 /* get basic quadrupel of mux registers and the correct reg inside */
541 mask = (bank->iomux[iomux_num].type & IOMUX_WIDTH_4BIT) ? 0xf : 0x3;
542 reg = bank->iomux[iomux_num].offset;
543 if (bank->iomux[iomux_num].type & IOMUX_WIDTH_4BIT) {
544 if ((pin % 8) >= 4)
545 reg += 0x4;
546 bit = (pin % 4) * 4;
547 } else {
548 bit = (pin % 8) * 2;
549 }
550
551 ret = regmap_read(regmap, reg, &val);
552 if (ret)
553 return ret;
554
555 return ((val >> bit) & mask);
556 }
557
558 /*
559 * Set a new mux function for a pin.
560 *
561 * The register is divided into the upper and lower 16 bit. When changing
562 * a value, the previous register value is not read and changed. Instead
563 * it seems the changed bits are marked in the upper 16 bit, while the
564 * changed value gets set in the same offset in the lower 16 bit.
565 * All pin settings seem to be 2 bit wide in both the upper and lower
566 * parts.
567 * @bank: pin bank to change
568 * @pin: pin to change
569 * @mux: new mux function to set
570 */
571 static int rockchip_set_mux(struct rockchip_pin_bank *bank, int pin, int mux)
572 {
573 struct rockchip_pinctrl *info = bank->drvdata;
574 int iomux_num = (pin / 8);
575 struct regmap *regmap;
576 int reg, ret, mask;
577 unsigned long flags;
578 u8 bit;
579 u32 data, rmask;
580
581 if (iomux_num > 3)
582 return -EINVAL;
583
584 if (bank->iomux[iomux_num].type & IOMUX_UNROUTED) {
585 dev_err(info->dev, "pin %d is unrouted\n", pin);
586 return -EINVAL;
587 }
588
589 if (bank->iomux[iomux_num].type & IOMUX_GPIO_ONLY) {
590 if (mux != RK_FUNC_GPIO) {
591 dev_err(info->dev,
592 "pin %d only supports a gpio mux\n", pin);
593 return -ENOTSUPP;
594 } else {
595 return 0;
596 }
597 }
598
599 dev_dbg(info->dev, "setting mux of GPIO%d-%d to %d\n",
600 bank->bank_num, pin, mux);
601
602 regmap = (bank->iomux[iomux_num].type & IOMUX_SOURCE_PMU)
603 ? info->regmap_pmu : info->regmap_base;
604
605 /* get basic quadrupel of mux registers and the correct reg inside */
606 mask = (bank->iomux[iomux_num].type & IOMUX_WIDTH_4BIT) ? 0xf : 0x3;
607 reg = bank->iomux[iomux_num].offset;
608 if (bank->iomux[iomux_num].type & IOMUX_WIDTH_4BIT) {
609 if ((pin % 8) >= 4)
610 reg += 0x4;
611 bit = (pin % 4) * 4;
612 } else {
613 bit = (pin % 8) * 2;
614 }
615
616 spin_lock_irqsave(&bank->slock, flags);
617
618 data = (mask << (bit + 16));
619 rmask = data | (data >> 16);
620 data |= (mux & mask) << bit;
621 ret = regmap_update_bits(regmap, reg, rmask, data);
622
623 spin_unlock_irqrestore(&bank->slock, flags);
624
625 return ret;
626 }
627
628 #define RK1108_PULL_PMU_OFFSET 0x10
629 #define RK1108_PULL_OFFSET 0x110
630 #define RK1108_PULL_PINS_PER_REG 8
631 #define RK1108_PULL_BITS_PER_PIN 2
632 #define RK1108_PULL_BANK_STRIDE 16
633
634 static void rk1108_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank,
635 int pin_num, struct regmap **regmap,
636 int *reg, u8 *bit)
637 {
638 struct rockchip_pinctrl *info = bank->drvdata;
639
640 /* The first 24 pins of the first bank are located in PMU */
641 if (bank->bank_num == 0) {
642 *regmap = info->regmap_pmu;
643 *reg = RK1108_PULL_PMU_OFFSET;
644 } else {
645 *reg = RK1108_PULL_OFFSET;
646 *regmap = info->regmap_base;
647 /* correct the offset, as we're starting with the 2nd bank */
648 *reg -= 0x10;
649 *reg += bank->bank_num * RK1108_PULL_BANK_STRIDE;
650 }
651
652 *reg += ((pin_num / RK1108_PULL_PINS_PER_REG) * 4);
653 *bit = (pin_num % RK1108_PULL_PINS_PER_REG);
654 *bit *= RK1108_PULL_BITS_PER_PIN;
655 }
656
657 #define RK1108_DRV_PMU_OFFSET 0x20
658 #define RK1108_DRV_GRF_OFFSET 0x210
659 #define RK1108_DRV_BITS_PER_PIN 2
660 #define RK1108_DRV_PINS_PER_REG 8
661 #define RK1108_DRV_BANK_STRIDE 16
662
663 static void rk1108_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank,
664 int pin_num, struct regmap **regmap,
665 int *reg, u8 *bit)
666 {
667 struct rockchip_pinctrl *info = bank->drvdata;
668
669 /* The first 24 pins of the first bank are located in PMU */
670 if (bank->bank_num == 0) {
671 *regmap = info->regmap_pmu;
672 *reg = RK1108_DRV_PMU_OFFSET;
673 } else {
674 *regmap = info->regmap_base;
675 *reg = RK1108_DRV_GRF_OFFSET;
676
677 /* correct the offset, as we're starting with the 2nd bank */
678 *reg -= 0x10;
679 *reg += bank->bank_num * RK1108_DRV_BANK_STRIDE;
680 }
681
682 *reg += ((pin_num / RK1108_DRV_PINS_PER_REG) * 4);
683 *bit = pin_num % RK1108_DRV_PINS_PER_REG;
684 *bit *= RK1108_DRV_BITS_PER_PIN;
685 }
686
687 #define RK2928_PULL_OFFSET 0x118
688 #define RK2928_PULL_PINS_PER_REG 16
689 #define RK2928_PULL_BANK_STRIDE 8
690
691 static void rk2928_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank,
692 int pin_num, struct regmap **regmap,
693 int *reg, u8 *bit)
694 {
695 struct rockchip_pinctrl *info = bank->drvdata;
696
697 *regmap = info->regmap_base;
698 *reg = RK2928_PULL_OFFSET;
699 *reg += bank->bank_num * RK2928_PULL_BANK_STRIDE;
700 *reg += (pin_num / RK2928_PULL_PINS_PER_REG) * 4;
701
702 *bit = pin_num % RK2928_PULL_PINS_PER_REG;
703 };
704
705 #define RK3188_PULL_OFFSET 0x164
706 #define RK3188_PULL_BITS_PER_PIN 2
707 #define RK3188_PULL_PINS_PER_REG 8
708 #define RK3188_PULL_BANK_STRIDE 16
709 #define RK3188_PULL_PMU_OFFSET 0x64
710
711 static void rk3188_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank,
712 int pin_num, struct regmap **regmap,
713 int *reg, u8 *bit)
714 {
715 struct rockchip_pinctrl *info = bank->drvdata;
716
717 /* The first 12 pins of the first bank are located elsewhere */
718 if (bank->bank_num == 0 && pin_num < 12) {
719 *regmap = info->regmap_pmu ? info->regmap_pmu
720 : bank->regmap_pull;
721 *reg = info->regmap_pmu ? RK3188_PULL_PMU_OFFSET : 0;
722 *reg += ((pin_num / RK3188_PULL_PINS_PER_REG) * 4);
723 *bit = pin_num % RK3188_PULL_PINS_PER_REG;
724 *bit *= RK3188_PULL_BITS_PER_PIN;
725 } else {
726 *regmap = info->regmap_pull ? info->regmap_pull
727 : info->regmap_base;
728 *reg = info->regmap_pull ? 0 : RK3188_PULL_OFFSET;
729
730 /* correct the offset, as it is the 2nd pull register */
731 *reg -= 4;
732 *reg += bank->bank_num * RK3188_PULL_BANK_STRIDE;
733 *reg += ((pin_num / RK3188_PULL_PINS_PER_REG) * 4);
734
735 /*
736 * The bits in these registers have an inverse ordering
737 * with the lowest pin being in bits 15:14 and the highest
738 * pin in bits 1:0
739 */
740 *bit = 7 - (pin_num % RK3188_PULL_PINS_PER_REG);
741 *bit *= RK3188_PULL_BITS_PER_PIN;
742 }
743 }
744
745 #define RK3288_PULL_OFFSET 0x140
746 static void rk3288_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank,
747 int pin_num, struct regmap **regmap,
748 int *reg, u8 *bit)
749 {
750 struct rockchip_pinctrl *info = bank->drvdata;
751
752 /* The first 24 pins of the first bank are located in PMU */
753 if (bank->bank_num == 0) {
754 *regmap = info->regmap_pmu;
755 *reg = RK3188_PULL_PMU_OFFSET;
756
757 *reg += ((pin_num / RK3188_PULL_PINS_PER_REG) * 4);
758 *bit = pin_num % RK3188_PULL_PINS_PER_REG;
759 *bit *= RK3188_PULL_BITS_PER_PIN;
760 } else {
761 *regmap = info->regmap_base;
762 *reg = RK3288_PULL_OFFSET;
763
764 /* correct the offset, as we're starting with the 2nd bank */
765 *reg -= 0x10;
766 *reg += bank->bank_num * RK3188_PULL_BANK_STRIDE;
767 *reg += ((pin_num / RK3188_PULL_PINS_PER_REG) * 4);
768
769 *bit = (pin_num % RK3188_PULL_PINS_PER_REG);
770 *bit *= RK3188_PULL_BITS_PER_PIN;
771 }
772 }
773
774 #define RK3288_DRV_PMU_OFFSET 0x70
775 #define RK3288_DRV_GRF_OFFSET 0x1c0
776 #define RK3288_DRV_BITS_PER_PIN 2
777 #define RK3288_DRV_PINS_PER_REG 8
778 #define RK3288_DRV_BANK_STRIDE 16
779
780 static void rk3288_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank,
781 int pin_num, struct regmap **regmap,
782 int *reg, u8 *bit)
783 {
784 struct rockchip_pinctrl *info = bank->drvdata;
785
786 /* The first 24 pins of the first bank are located in PMU */
787 if (bank->bank_num == 0) {
788 *regmap = info->regmap_pmu;
789 *reg = RK3288_DRV_PMU_OFFSET;
790
791 *reg += ((pin_num / RK3288_DRV_PINS_PER_REG) * 4);
792 *bit = pin_num % RK3288_DRV_PINS_PER_REG;
793 *bit *= RK3288_DRV_BITS_PER_PIN;
794 } else {
795 *regmap = info->regmap_base;
796 *reg = RK3288_DRV_GRF_OFFSET;
797
798 /* correct the offset, as we're starting with the 2nd bank */
799 *reg -= 0x10;
800 *reg += bank->bank_num * RK3288_DRV_BANK_STRIDE;
801 *reg += ((pin_num / RK3288_DRV_PINS_PER_REG) * 4);
802
803 *bit = (pin_num % RK3288_DRV_PINS_PER_REG);
804 *bit *= RK3288_DRV_BITS_PER_PIN;
805 }
806 }
807
808 #define RK3228_PULL_OFFSET 0x100
809
810 static void rk3228_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank,
811 int pin_num, struct regmap **regmap,
812 int *reg, u8 *bit)
813 {
814 struct rockchip_pinctrl *info = bank->drvdata;
815
816 *regmap = info->regmap_base;
817 *reg = RK3228_PULL_OFFSET;
818 *reg += bank->bank_num * RK3188_PULL_BANK_STRIDE;
819 *reg += ((pin_num / RK3188_PULL_PINS_PER_REG) * 4);
820
821 *bit = (pin_num % RK3188_PULL_PINS_PER_REG);
822 *bit *= RK3188_PULL_BITS_PER_PIN;
823 }
824
825 #define RK3228_DRV_GRF_OFFSET 0x200
826
827 static void rk3228_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank,
828 int pin_num, struct regmap **regmap,
829 int *reg, u8 *bit)
830 {
831 struct rockchip_pinctrl *info = bank->drvdata;
832
833 *regmap = info->regmap_base;
834 *reg = RK3228_DRV_GRF_OFFSET;
835 *reg += bank->bank_num * RK3288_DRV_BANK_STRIDE;
836 *reg += ((pin_num / RK3288_DRV_PINS_PER_REG) * 4);
837
838 *bit = (pin_num % RK3288_DRV_PINS_PER_REG);
839 *bit *= RK3288_DRV_BITS_PER_PIN;
840 }
841
842 #define RK3368_PULL_GRF_OFFSET 0x100
843 #define RK3368_PULL_PMU_OFFSET 0x10
844
845 static void rk3368_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank,
846 int pin_num, struct regmap **regmap,
847 int *reg, u8 *bit)
848 {
849 struct rockchip_pinctrl *info = bank->drvdata;
850
851 /* The first 32 pins of the first bank are located in PMU */
852 if (bank->bank_num == 0) {
853 *regmap = info->regmap_pmu;
854 *reg = RK3368_PULL_PMU_OFFSET;
855
856 *reg += ((pin_num / RK3188_PULL_PINS_PER_REG) * 4);
857 *bit = pin_num % RK3188_PULL_PINS_PER_REG;
858 *bit *= RK3188_PULL_BITS_PER_PIN;
859 } else {
860 *regmap = info->regmap_base;
861 *reg = RK3368_PULL_GRF_OFFSET;
862
863 /* correct the offset, as we're starting with the 2nd bank */
864 *reg -= 0x10;
865 *reg += bank->bank_num * RK3188_PULL_BANK_STRIDE;
866 *reg += ((pin_num / RK3188_PULL_PINS_PER_REG) * 4);
867
868 *bit = (pin_num % RK3188_PULL_PINS_PER_REG);
869 *bit *= RK3188_PULL_BITS_PER_PIN;
870 }
871 }
872
873 #define RK3368_DRV_PMU_OFFSET 0x20
874 #define RK3368_DRV_GRF_OFFSET 0x200
875
876 static void rk3368_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank,
877 int pin_num, struct regmap **regmap,
878 int *reg, u8 *bit)
879 {
880 struct rockchip_pinctrl *info = bank->drvdata;
881
882 /* The first 32 pins of the first bank are located in PMU */
883 if (bank->bank_num == 0) {
884 *regmap = info->regmap_pmu;
885 *reg = RK3368_DRV_PMU_OFFSET;
886
887 *reg += ((pin_num / RK3288_DRV_PINS_PER_REG) * 4);
888 *bit = pin_num % RK3288_DRV_PINS_PER_REG;
889 *bit *= RK3288_DRV_BITS_PER_PIN;
890 } else {
891 *regmap = info->regmap_base;
892 *reg = RK3368_DRV_GRF_OFFSET;
893
894 /* correct the offset, as we're starting with the 2nd bank */
895 *reg -= 0x10;
896 *reg += bank->bank_num * RK3288_DRV_BANK_STRIDE;
897 *reg += ((pin_num / RK3288_DRV_PINS_PER_REG) * 4);
898
899 *bit = (pin_num % RK3288_DRV_PINS_PER_REG);
900 *bit *= RK3288_DRV_BITS_PER_PIN;
901 }
902 }
903
904 #define RK3399_PULL_GRF_OFFSET 0xe040
905 #define RK3399_PULL_PMU_OFFSET 0x40
906 #define RK3399_DRV_3BITS_PER_PIN 3
907
908 static void rk3399_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank,
909 int pin_num, struct regmap **regmap,
910 int *reg, u8 *bit)
911 {
912 struct rockchip_pinctrl *info = bank->drvdata;
913
914 /* The bank0:16 and bank1:32 pins are located in PMU */
915 if ((bank->bank_num == 0) || (bank->bank_num == 1)) {
916 *regmap = info->regmap_pmu;
917 *reg = RK3399_PULL_PMU_OFFSET;
918
919 *reg += bank->bank_num * RK3188_PULL_BANK_STRIDE;
920
921 *reg += ((pin_num / RK3188_PULL_PINS_PER_REG) * 4);
922 *bit = pin_num % RK3188_PULL_PINS_PER_REG;
923 *bit *= RK3188_PULL_BITS_PER_PIN;
924 } else {
925 *regmap = info->regmap_base;
926 *reg = RK3399_PULL_GRF_OFFSET;
927
928 /* correct the offset, as we're starting with the 3rd bank */
929 *reg -= 0x20;
930 *reg += bank->bank_num * RK3188_PULL_BANK_STRIDE;
931 *reg += ((pin_num / RK3188_PULL_PINS_PER_REG) * 4);
932
933 *bit = (pin_num % RK3188_PULL_PINS_PER_REG);
934 *bit *= RK3188_PULL_BITS_PER_PIN;
935 }
936 }
937
938 static void rk3399_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank,
939 int pin_num, struct regmap **regmap,
940 int *reg, u8 *bit)
941 {
942 struct rockchip_pinctrl *info = bank->drvdata;
943 int drv_num = (pin_num / 8);
944
945 /* The bank0:16 and bank1:32 pins are located in PMU */
946 if ((bank->bank_num == 0) || (bank->bank_num == 1))
947 *regmap = info->regmap_pmu;
948 else
949 *regmap = info->regmap_base;
950
951 *reg = bank->drv[drv_num].offset;
952 if ((bank->drv[drv_num].drv_type == DRV_TYPE_IO_1V8_3V0_AUTO) ||
953 (bank->drv[drv_num].drv_type == DRV_TYPE_IO_3V3_ONLY))
954 *bit = (pin_num % 8) * 3;
955 else
956 *bit = (pin_num % 8) * 2;
957 }
958
959 static int rockchip_perpin_drv_list[DRV_TYPE_MAX][8] = {
960 { 2, 4, 8, 12, -1, -1, -1, -1 },
961 { 3, 6, 9, 12, -1, -1, -1, -1 },
962 { 5, 10, 15, 20, -1, -1, -1, -1 },
963 { 4, 6, 8, 10, 12, 14, 16, 18 },
964 { 4, 7, 10, 13, 16, 19, 22, 26 }
965 };
966
967 static int rockchip_get_drive_perpin(struct rockchip_pin_bank *bank,
968 int pin_num)
969 {
970 struct rockchip_pinctrl *info = bank->drvdata;
971 struct rockchip_pin_ctrl *ctrl = info->ctrl;
972 struct regmap *regmap;
973 int reg, ret;
974 u32 data, temp, rmask_bits;
975 u8 bit;
976 int drv_type = bank->drv[pin_num / 8].drv_type;
977
978 ctrl->drv_calc_reg(bank, pin_num, &regmap, &reg, &bit);
979
980 switch (drv_type) {
981 case DRV_TYPE_IO_1V8_3V0_AUTO:
982 case DRV_TYPE_IO_3V3_ONLY:
983 rmask_bits = RK3399_DRV_3BITS_PER_PIN;
984 switch (bit) {
985 case 0 ... 12:
986 /* regular case, nothing to do */
987 break;
988 case 15:
989 /*
990 * drive-strength offset is special, as it is
991 * spread over 2 registers
992 */
993 ret = regmap_read(regmap, reg, &data);
994 if (ret)
995 return ret;
996
997 ret = regmap_read(regmap, reg + 0x4, &temp);
998 if (ret)
999 return ret;
1000
1001 /*
1002 * the bit data[15] contains bit 0 of the value
1003 * while temp[1:0] contains bits 2 and 1
1004 */
1005 data >>= 15;
1006 temp &= 0x3;
1007 temp <<= 1;
1008 data |= temp;
1009
1010 return rockchip_perpin_drv_list[drv_type][data];
1011 case 18 ... 21:
1012 /* setting fully enclosed in the second register */
1013 reg += 4;
1014 bit -= 16;
1015 break;
1016 default:
1017 dev_err(info->dev, "unsupported bit: %d for pinctrl drive type: %d\n",
1018 bit, drv_type);
1019 return -EINVAL;
1020 }
1021
1022 break;
1023 case DRV_TYPE_IO_DEFAULT:
1024 case DRV_TYPE_IO_1V8_OR_3V0:
1025 case DRV_TYPE_IO_1V8_ONLY:
1026 rmask_bits = RK3288_DRV_BITS_PER_PIN;
1027 break;
1028 default:
1029 dev_err(info->dev, "unsupported pinctrl drive type: %d\n",
1030 drv_type);
1031 return -EINVAL;
1032 }
1033
1034 ret = regmap_read(regmap, reg, &data);
1035 if (ret)
1036 return ret;
1037
1038 data >>= bit;
1039 data &= (1 << rmask_bits) - 1;
1040
1041 return rockchip_perpin_drv_list[drv_type][data];
1042 }
1043
1044 static int rockchip_set_drive_perpin(struct rockchip_pin_bank *bank,
1045 int pin_num, int strength)
1046 {
1047 struct rockchip_pinctrl *info = bank->drvdata;
1048 struct rockchip_pin_ctrl *ctrl = info->ctrl;
1049 struct regmap *regmap;
1050 unsigned long flags;
1051 int reg, ret, i;
1052 u32 data, rmask, rmask_bits, temp;
1053 u8 bit;
1054 int drv_type = bank->drv[pin_num / 8].drv_type;
1055
1056 dev_dbg(info->dev, "setting drive of GPIO%d-%d to %d\n",
1057 bank->bank_num, pin_num, strength);
1058
1059 ctrl->drv_calc_reg(bank, pin_num, &regmap, &reg, &bit);
1060
1061 ret = -EINVAL;
1062 for (i = 0; i < ARRAY_SIZE(rockchip_perpin_drv_list[drv_type]); i++) {
1063 if (rockchip_perpin_drv_list[drv_type][i] == strength) {
1064 ret = i;
1065 break;
1066 } else if (rockchip_perpin_drv_list[drv_type][i] < 0) {
1067 ret = rockchip_perpin_drv_list[drv_type][i];
1068 break;
1069 }
1070 }
1071
1072 if (ret < 0) {
1073 dev_err(info->dev, "unsupported driver strength %d\n",
1074 strength);
1075 return ret;
1076 }
1077
1078 spin_lock_irqsave(&bank->slock, flags);
1079
1080 switch (drv_type) {
1081 case DRV_TYPE_IO_1V8_3V0_AUTO:
1082 case DRV_TYPE_IO_3V3_ONLY:
1083 rmask_bits = RK3399_DRV_3BITS_PER_PIN;
1084 switch (bit) {
1085 case 0 ... 12:
1086 /* regular case, nothing to do */
1087 break;
1088 case 15:
1089 /*
1090 * drive-strength offset is special, as it is spread
1091 * over 2 registers, the bit data[15] contains bit 0
1092 * of the value while temp[1:0] contains bits 2 and 1
1093 */
1094 data = (ret & 0x1) << 15;
1095 temp = (ret >> 0x1) & 0x3;
1096
1097 rmask = BIT(15) | BIT(31);
1098 data |= BIT(31);
1099 ret = regmap_update_bits(regmap, reg, rmask, data);
1100 if (ret) {
1101 spin_unlock_irqrestore(&bank->slock, flags);
1102 return ret;
1103 }
1104
1105 rmask = 0x3 | (0x3 << 16);
1106 temp |= (0x3 << 16);
1107 reg += 0x4;
1108 ret = regmap_update_bits(regmap, reg, rmask, temp);
1109
1110 spin_unlock_irqrestore(&bank->slock, flags);
1111 return ret;
1112 case 18 ... 21:
1113 /* setting fully enclosed in the second register */
1114 reg += 4;
1115 bit -= 16;
1116 break;
1117 default:
1118 spin_unlock_irqrestore(&bank->slock, flags);
1119 dev_err(info->dev, "unsupported bit: %d for pinctrl drive type: %d\n",
1120 bit, drv_type);
1121 return -EINVAL;
1122 }
1123 break;
1124 case DRV_TYPE_IO_DEFAULT:
1125 case DRV_TYPE_IO_1V8_OR_3V0:
1126 case DRV_TYPE_IO_1V8_ONLY:
1127 rmask_bits = RK3288_DRV_BITS_PER_PIN;
1128 break;
1129 default:
1130 spin_unlock_irqrestore(&bank->slock, flags);
1131 dev_err(info->dev, "unsupported pinctrl drive type: %d\n",
1132 drv_type);
1133 return -EINVAL;
1134 }
1135
1136 /* enable the write to the equivalent lower bits */
1137 data = ((1 << rmask_bits) - 1) << (bit + 16);
1138 rmask = data | (data >> 16);
1139 data |= (ret << bit);
1140
1141 ret = regmap_update_bits(regmap, reg, rmask, data);
1142 spin_unlock_irqrestore(&bank->slock, flags);
1143
1144 return ret;
1145 }
1146
1147 static int rockchip_pull_list[PULL_TYPE_MAX][4] = {
1148 {
1149 PIN_CONFIG_BIAS_DISABLE,
1150 PIN_CONFIG_BIAS_PULL_UP,
1151 PIN_CONFIG_BIAS_PULL_DOWN,
1152 PIN_CONFIG_BIAS_BUS_HOLD
1153 },
1154 {
1155 PIN_CONFIG_BIAS_DISABLE,
1156 PIN_CONFIG_BIAS_PULL_DOWN,
1157 PIN_CONFIG_BIAS_DISABLE,
1158 PIN_CONFIG_BIAS_PULL_UP
1159 },
1160 };
1161
1162 static int rockchip_get_pull(struct rockchip_pin_bank *bank, int pin_num)
1163 {
1164 struct rockchip_pinctrl *info = bank->drvdata;
1165 struct rockchip_pin_ctrl *ctrl = info->ctrl;
1166 struct regmap *regmap;
1167 int reg, ret, pull_type;
1168 u8 bit;
1169 u32 data;
1170
1171 /* rk3066b does support any pulls */
1172 if (ctrl->type == RK3066B)
1173 return PIN_CONFIG_BIAS_DISABLE;
1174
1175 ctrl->pull_calc_reg(bank, pin_num, &regmap, &reg, &bit);
1176
1177 ret = regmap_read(regmap, reg, &data);
1178 if (ret)
1179 return ret;
1180
1181 switch (ctrl->type) {
1182 case RK2928:
1183 return !(data & BIT(bit))
1184 ? PIN_CONFIG_BIAS_PULL_PIN_DEFAULT
1185 : PIN_CONFIG_BIAS_DISABLE;
1186 case RK1108:
1187 case RK3188:
1188 case RK3288:
1189 case RK3368:
1190 case RK3399:
1191 pull_type = bank->pull_type[pin_num / 8];
1192 data >>= bit;
1193 data &= (1 << RK3188_PULL_BITS_PER_PIN) - 1;
1194
1195 return rockchip_pull_list[pull_type][data];
1196 default:
1197 dev_err(info->dev, "unsupported pinctrl type\n");
1198 return -EINVAL;
1199 };
1200 }
1201
1202 static int rockchip_set_pull(struct rockchip_pin_bank *bank,
1203 int pin_num, int pull)
1204 {
1205 struct rockchip_pinctrl *info = bank->drvdata;
1206 struct rockchip_pin_ctrl *ctrl = info->ctrl;
1207 struct regmap *regmap;
1208 int reg, ret, i, pull_type;
1209 unsigned long flags;
1210 u8 bit;
1211 u32 data, rmask;
1212
1213 dev_dbg(info->dev, "setting pull of GPIO%d-%d to %d\n",
1214 bank->bank_num, pin_num, pull);
1215
1216 /* rk3066b does support any pulls */
1217 if (ctrl->type == RK3066B)
1218 return pull ? -EINVAL : 0;
1219
1220 ctrl->pull_calc_reg(bank, pin_num, &regmap, &reg, &bit);
1221
1222 switch (ctrl->type) {
1223 case RK2928:
1224 spin_lock_irqsave(&bank->slock, flags);
1225
1226 data = BIT(bit + 16);
1227 if (pull == PIN_CONFIG_BIAS_DISABLE)
1228 data |= BIT(bit);
1229 ret = regmap_write(regmap, reg, data);
1230
1231 spin_unlock_irqrestore(&bank->slock, flags);
1232 break;
1233 case RK1108:
1234 case RK3188:
1235 case RK3288:
1236 case RK3368:
1237 case RK3399:
1238 pull_type = bank->pull_type[pin_num / 8];
1239 ret = -EINVAL;
1240 for (i = 0; i < ARRAY_SIZE(rockchip_pull_list[pull_type]);
1241 i++) {
1242 if (rockchip_pull_list[pull_type][i] == pull) {
1243 ret = i;
1244 break;
1245 }
1246 }
1247
1248 if (ret < 0) {
1249 dev_err(info->dev, "unsupported pull setting %d\n",
1250 pull);
1251 return ret;
1252 }
1253
1254 spin_lock_irqsave(&bank->slock, flags);
1255
1256 /* enable the write to the equivalent lower bits */
1257 data = ((1 << RK3188_PULL_BITS_PER_PIN) - 1) << (bit + 16);
1258 rmask = data | (data >> 16);
1259 data |= (ret << bit);
1260
1261 ret = regmap_update_bits(regmap, reg, rmask, data);
1262
1263 spin_unlock_irqrestore(&bank->slock, flags);
1264 break;
1265 default:
1266 dev_err(info->dev, "unsupported pinctrl type\n");
1267 return -EINVAL;
1268 }
1269
1270 return ret;
1271 }
1272
1273 /*
1274 * Pinmux_ops handling
1275 */
1276
1277 static int rockchip_pmx_get_funcs_count(struct pinctrl_dev *pctldev)
1278 {
1279 struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
1280
1281 return info->nfunctions;
1282 }
1283
1284 static const char *rockchip_pmx_get_func_name(struct pinctrl_dev *pctldev,
1285 unsigned selector)
1286 {
1287 struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
1288
1289 return info->functions[selector].name;
1290 }
1291
1292 static int rockchip_pmx_get_groups(struct pinctrl_dev *pctldev,
1293 unsigned selector, const char * const **groups,
1294 unsigned * const num_groups)
1295 {
1296 struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
1297
1298 *groups = info->functions[selector].groups;
1299 *num_groups = info->functions[selector].ngroups;
1300
1301 return 0;
1302 }
1303
1304 static int rockchip_pmx_set(struct pinctrl_dev *pctldev, unsigned selector,
1305 unsigned group)
1306 {
1307 struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
1308 const unsigned int *pins = info->groups[group].pins;
1309 const struct rockchip_pin_config *data = info->groups[group].data;
1310 struct rockchip_pin_bank *bank;
1311 int cnt, ret = 0;
1312
1313 dev_dbg(info->dev, "enable function %s group %s\n",
1314 info->functions[selector].name, info->groups[group].name);
1315
1316 /*
1317 * for each pin in the pin group selected, program the correspoding pin
1318 * pin function number in the config register.
1319 */
1320 for (cnt = 0; cnt < info->groups[group].npins; cnt++) {
1321 bank = pin_to_bank(info, pins[cnt]);
1322 ret = rockchip_set_mux(bank, pins[cnt] - bank->pin_base,
1323 data[cnt].func);
1324 if (ret)
1325 break;
1326 }
1327
1328 if (ret) {
1329 /* revert the already done pin settings */
1330 for (cnt--; cnt >= 0; cnt--)
1331 rockchip_set_mux(bank, pins[cnt] - bank->pin_base, 0);
1332
1333 return ret;
1334 }
1335
1336 return 0;
1337 }
1338
1339 static int rockchip_gpio_get_direction(struct gpio_chip *chip, unsigned offset)
1340 {
1341 struct rockchip_pin_bank *bank = gpiochip_get_data(chip);
1342 u32 data;
1343
1344 data = readl_relaxed(bank->reg_base + GPIO_SWPORT_DDR);
1345
1346 return !(data & BIT(offset));
1347 }
1348
1349 /*
1350 * The calls to gpio_direction_output() and gpio_direction_input()
1351 * leads to this function call (via the pinctrl_gpio_direction_{input|output}()
1352 * function called from the gpiolib interface).
1353 */
1354 static int _rockchip_pmx_gpio_set_direction(struct gpio_chip *chip,
1355 int pin, bool input)
1356 {
1357 struct rockchip_pin_bank *bank;
1358 int ret;
1359 unsigned long flags;
1360 u32 data;
1361
1362 bank = gpiochip_get_data(chip);
1363
1364 ret = rockchip_set_mux(bank, pin, RK_FUNC_GPIO);
1365 if (ret < 0)
1366 return ret;
1367
1368 clk_enable(bank->clk);
1369 spin_lock_irqsave(&bank->slock, flags);
1370
1371 data = readl_relaxed(bank->reg_base + GPIO_SWPORT_DDR);
1372 /* set bit to 1 for output, 0 for input */
1373 if (!input)
1374 data |= BIT(pin);
1375 else
1376 data &= ~BIT(pin);
1377 writel_relaxed(data, bank->reg_base + GPIO_SWPORT_DDR);
1378
1379 spin_unlock_irqrestore(&bank->slock, flags);
1380 clk_disable(bank->clk);
1381
1382 return 0;
1383 }
1384
1385 static int rockchip_pmx_gpio_set_direction(struct pinctrl_dev *pctldev,
1386 struct pinctrl_gpio_range *range,
1387 unsigned offset, bool input)
1388 {
1389 struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
1390 struct gpio_chip *chip;
1391 int pin;
1392
1393 chip = range->gc;
1394 pin = offset - chip->base;
1395 dev_dbg(info->dev, "gpio_direction for pin %u as %s-%d to %s\n",
1396 offset, range->name, pin, input ? "input" : "output");
1397
1398 return _rockchip_pmx_gpio_set_direction(chip, offset - chip->base,
1399 input);
1400 }
1401
1402 static const struct pinmux_ops rockchip_pmx_ops = {
1403 .get_functions_count = rockchip_pmx_get_funcs_count,
1404 .get_function_name = rockchip_pmx_get_func_name,
1405 .get_function_groups = rockchip_pmx_get_groups,
1406 .set_mux = rockchip_pmx_set,
1407 .gpio_set_direction = rockchip_pmx_gpio_set_direction,
1408 };
1409
1410 /*
1411 * Pinconf_ops handling
1412 */
1413
1414 static bool rockchip_pinconf_pull_valid(struct rockchip_pin_ctrl *ctrl,
1415 enum pin_config_param pull)
1416 {
1417 switch (ctrl->type) {
1418 case RK2928:
1419 return (pull == PIN_CONFIG_BIAS_PULL_PIN_DEFAULT ||
1420 pull == PIN_CONFIG_BIAS_DISABLE);
1421 case RK3066B:
1422 return pull ? false : true;
1423 case RK1108:
1424 case RK3188:
1425 case RK3288:
1426 case RK3368:
1427 case RK3399:
1428 return (pull != PIN_CONFIG_BIAS_PULL_PIN_DEFAULT);
1429 }
1430
1431 return false;
1432 }
1433
1434 static void rockchip_gpio_set(struct gpio_chip *gc, unsigned offset, int value);
1435 static int rockchip_gpio_get(struct gpio_chip *gc, unsigned offset);
1436
1437 /* set the pin config settings for a specified pin */
1438 static int rockchip_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin,
1439 unsigned long *configs, unsigned num_configs)
1440 {
1441 struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
1442 struct rockchip_pin_bank *bank = pin_to_bank(info, pin);
1443 enum pin_config_param param;
1444 u16 arg;
1445 int i;
1446 int rc;
1447
1448 for (i = 0; i < num_configs; i++) {
1449 param = pinconf_to_config_param(configs[i]);
1450 arg = pinconf_to_config_argument(configs[i]);
1451
1452 switch (param) {
1453 case PIN_CONFIG_BIAS_DISABLE:
1454 rc = rockchip_set_pull(bank, pin - bank->pin_base,
1455 param);
1456 if (rc)
1457 return rc;
1458 break;
1459 case PIN_CONFIG_BIAS_PULL_UP:
1460 case PIN_CONFIG_BIAS_PULL_DOWN:
1461 case PIN_CONFIG_BIAS_PULL_PIN_DEFAULT:
1462 case PIN_CONFIG_BIAS_BUS_HOLD:
1463 if (!rockchip_pinconf_pull_valid(info->ctrl, param))
1464 return -ENOTSUPP;
1465
1466 if (!arg)
1467 return -EINVAL;
1468
1469 rc = rockchip_set_pull(bank, pin - bank->pin_base,
1470 param);
1471 if (rc)
1472 return rc;
1473 break;
1474 case PIN_CONFIG_OUTPUT:
1475 rockchip_gpio_set(&bank->gpio_chip,
1476 pin - bank->pin_base, arg);
1477 rc = _rockchip_pmx_gpio_set_direction(&bank->gpio_chip,
1478 pin - bank->pin_base, false);
1479 if (rc)
1480 return rc;
1481 break;
1482 case PIN_CONFIG_DRIVE_STRENGTH:
1483 /* rk3288 is the first with per-pin drive-strength */
1484 if (!info->ctrl->drv_calc_reg)
1485 return -ENOTSUPP;
1486
1487 rc = rockchip_set_drive_perpin(bank,
1488 pin - bank->pin_base, arg);
1489 if (rc < 0)
1490 return rc;
1491 break;
1492 default:
1493 return -ENOTSUPP;
1494 break;
1495 }
1496 } /* for each config */
1497
1498 return 0;
1499 }
1500
1501 /* get the pin config settings for a specified pin */
1502 static int rockchip_pinconf_get(struct pinctrl_dev *pctldev, unsigned int pin,
1503 unsigned long *config)
1504 {
1505 struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
1506 struct rockchip_pin_bank *bank = pin_to_bank(info, pin);
1507 enum pin_config_param param = pinconf_to_config_param(*config);
1508 u16 arg;
1509 int rc;
1510
1511 switch (param) {
1512 case PIN_CONFIG_BIAS_DISABLE:
1513 if (rockchip_get_pull(bank, pin - bank->pin_base) != param)
1514 return -EINVAL;
1515
1516 arg = 0;
1517 break;
1518 case PIN_CONFIG_BIAS_PULL_UP:
1519 case PIN_CONFIG_BIAS_PULL_DOWN:
1520 case PIN_CONFIG_BIAS_PULL_PIN_DEFAULT:
1521 case PIN_CONFIG_BIAS_BUS_HOLD:
1522 if (!rockchip_pinconf_pull_valid(info->ctrl, param))
1523 return -ENOTSUPP;
1524
1525 if (rockchip_get_pull(bank, pin - bank->pin_base) != param)
1526 return -EINVAL;
1527
1528 arg = 1;
1529 break;
1530 case PIN_CONFIG_OUTPUT:
1531 rc = rockchip_get_mux(bank, pin - bank->pin_base);
1532 if (rc != RK_FUNC_GPIO)
1533 return -EINVAL;
1534
1535 rc = rockchip_gpio_get(&bank->gpio_chip, pin - bank->pin_base);
1536 if (rc < 0)
1537 return rc;
1538
1539 arg = rc ? 1 : 0;
1540 break;
1541 case PIN_CONFIG_DRIVE_STRENGTH:
1542 /* rk3288 is the first with per-pin drive-strength */
1543 if (!info->ctrl->drv_calc_reg)
1544 return -ENOTSUPP;
1545
1546 rc = rockchip_get_drive_perpin(bank, pin - bank->pin_base);
1547 if (rc < 0)
1548 return rc;
1549
1550 arg = rc;
1551 break;
1552 default:
1553 return -ENOTSUPP;
1554 break;
1555 }
1556
1557 *config = pinconf_to_config_packed(param, arg);
1558
1559 return 0;
1560 }
1561
1562 static const struct pinconf_ops rockchip_pinconf_ops = {
1563 .pin_config_get = rockchip_pinconf_get,
1564 .pin_config_set = rockchip_pinconf_set,
1565 .is_generic = true,
1566 };
1567
1568 static const struct of_device_id rockchip_bank_match[] = {
1569 { .compatible = "rockchip,gpio-bank" },
1570 { .compatible = "rockchip,rk3188-gpio-bank0" },
1571 {},
1572 };
1573
1574 static void rockchip_pinctrl_child_count(struct rockchip_pinctrl *info,
1575 struct device_node *np)
1576 {
1577 struct device_node *child;
1578
1579 for_each_child_of_node(np, child) {
1580 if (of_match_node(rockchip_bank_match, child))
1581 continue;
1582
1583 info->nfunctions++;
1584 info->ngroups += of_get_child_count(child);
1585 }
1586 }
1587
1588 static int rockchip_pinctrl_parse_groups(struct device_node *np,
1589 struct rockchip_pin_group *grp,
1590 struct rockchip_pinctrl *info,
1591 u32 index)
1592 {
1593 struct rockchip_pin_bank *bank;
1594 int size;
1595 const __be32 *list;
1596 int num;
1597 int i, j;
1598 int ret;
1599
1600 dev_dbg(info->dev, "group(%d): %s\n", index, np->name);
1601
1602 /* Initialise group */
1603 grp->name = np->name;
1604
1605 /*
1606 * the binding format is rockchip,pins = <bank pin mux CONFIG>,
1607 * do sanity check and calculate pins number
1608 */
1609 list = of_get_property(np, "rockchip,pins", &size);
1610 /* we do not check return since it's safe node passed down */
1611 size /= sizeof(*list);
1612 if (!size || size % 4) {
1613 dev_err(info->dev, "wrong pins number or pins and configs should be by 4\n");
1614 return -EINVAL;
1615 }
1616
1617 grp->npins = size / 4;
1618
1619 grp->pins = devm_kzalloc(info->dev, grp->npins * sizeof(unsigned int),
1620 GFP_KERNEL);
1621 grp->data = devm_kzalloc(info->dev, grp->npins *
1622 sizeof(struct rockchip_pin_config),
1623 GFP_KERNEL);
1624 if (!grp->pins || !grp->data)
1625 return -ENOMEM;
1626
1627 for (i = 0, j = 0; i < size; i += 4, j++) {
1628 const __be32 *phandle;
1629 struct device_node *np_config;
1630
1631 num = be32_to_cpu(*list++);
1632 bank = bank_num_to_bank(info, num);
1633 if (IS_ERR(bank))
1634 return PTR_ERR(bank);
1635
1636 grp->pins[j] = bank->pin_base + be32_to_cpu(*list++);
1637 grp->data[j].func = be32_to_cpu(*list++);
1638
1639 phandle = list++;
1640 if (!phandle)
1641 return -EINVAL;
1642
1643 np_config = of_find_node_by_phandle(be32_to_cpup(phandle));
1644 ret = pinconf_generic_parse_dt_config(np_config, NULL,
1645 &grp->data[j].configs, &grp->data[j].nconfigs);
1646 if (ret)
1647 return ret;
1648 }
1649
1650 return 0;
1651 }
1652
1653 static int rockchip_pinctrl_parse_functions(struct device_node *np,
1654 struct rockchip_pinctrl *info,
1655 u32 index)
1656 {
1657 struct device_node *child;
1658 struct rockchip_pmx_func *func;
1659 struct rockchip_pin_group *grp;
1660 int ret;
1661 static u32 grp_index;
1662 u32 i = 0;
1663
1664 dev_dbg(info->dev, "parse function(%d): %s\n", index, np->name);
1665
1666 func = &info->functions[index];
1667
1668 /* Initialise function */
1669 func->name = np->name;
1670 func->ngroups = of_get_child_count(np);
1671 if (func->ngroups <= 0)
1672 return 0;
1673
1674 func->groups = devm_kzalloc(info->dev,
1675 func->ngroups * sizeof(char *), GFP_KERNEL);
1676 if (!func->groups)
1677 return -ENOMEM;
1678
1679 for_each_child_of_node(np, child) {
1680 func->groups[i] = child->name;
1681 grp = &info->groups[grp_index++];
1682 ret = rockchip_pinctrl_parse_groups(child, grp, info, i++);
1683 if (ret) {
1684 of_node_put(child);
1685 return ret;
1686 }
1687 }
1688
1689 return 0;
1690 }
1691
1692 static int rockchip_pinctrl_parse_dt(struct platform_device *pdev,
1693 struct rockchip_pinctrl *info)
1694 {
1695 struct device *dev = &pdev->dev;
1696 struct device_node *np = dev->of_node;
1697 struct device_node *child;
1698 int ret;
1699 int i;
1700
1701 rockchip_pinctrl_child_count(info, np);
1702
1703 dev_dbg(&pdev->dev, "nfunctions = %d\n", info->nfunctions);
1704 dev_dbg(&pdev->dev, "ngroups = %d\n", info->ngroups);
1705
1706 info->functions = devm_kzalloc(dev, info->nfunctions *
1707 sizeof(struct rockchip_pmx_func),
1708 GFP_KERNEL);
1709 if (!info->functions) {
1710 dev_err(dev, "failed to allocate memory for function list\n");
1711 return -EINVAL;
1712 }
1713
1714 info->groups = devm_kzalloc(dev, info->ngroups *
1715 sizeof(struct rockchip_pin_group),
1716 GFP_KERNEL);
1717 if (!info->groups) {
1718 dev_err(dev, "failed allocate memory for ping group list\n");
1719 return -EINVAL;
1720 }
1721
1722 i = 0;
1723
1724 for_each_child_of_node(np, child) {
1725 if (of_match_node(rockchip_bank_match, child))
1726 continue;
1727
1728 ret = rockchip_pinctrl_parse_functions(child, info, i++);
1729 if (ret) {
1730 dev_err(&pdev->dev, "failed to parse function\n");
1731 of_node_put(child);
1732 return ret;
1733 }
1734 }
1735
1736 return 0;
1737 }
1738
1739 static int rockchip_pinctrl_register(struct platform_device *pdev,
1740 struct rockchip_pinctrl *info)
1741 {
1742 struct pinctrl_desc *ctrldesc = &info->pctl;
1743 struct pinctrl_pin_desc *pindesc, *pdesc;
1744 struct rockchip_pin_bank *pin_bank;
1745 int pin, bank, ret;
1746 int k;
1747
1748 ctrldesc->name = "rockchip-pinctrl";
1749 ctrldesc->owner = THIS_MODULE;
1750 ctrldesc->pctlops = &rockchip_pctrl_ops;
1751 ctrldesc->pmxops = &rockchip_pmx_ops;
1752 ctrldesc->confops = &rockchip_pinconf_ops;
1753
1754 pindesc = devm_kzalloc(&pdev->dev, sizeof(*pindesc) *
1755 info->ctrl->nr_pins, GFP_KERNEL);
1756 if (!pindesc) {
1757 dev_err(&pdev->dev, "mem alloc for pin descriptors failed\n");
1758 return -ENOMEM;
1759 }
1760 ctrldesc->pins = pindesc;
1761 ctrldesc->npins = info->ctrl->nr_pins;
1762
1763 pdesc = pindesc;
1764 for (bank = 0 , k = 0; bank < info->ctrl->nr_banks; bank++) {
1765 pin_bank = &info->ctrl->pin_banks[bank];
1766 for (pin = 0; pin < pin_bank->nr_pins; pin++, k++) {
1767 pdesc->number = k;
1768 pdesc->name = kasprintf(GFP_KERNEL, "%s-%d",
1769 pin_bank->name, pin);
1770 pdesc++;
1771 }
1772 }
1773
1774 ret = rockchip_pinctrl_parse_dt(pdev, info);
1775 if (ret)
1776 return ret;
1777
1778 info->pctl_dev = devm_pinctrl_register(&pdev->dev, ctrldesc, info);
1779 if (IS_ERR(info->pctl_dev)) {
1780 dev_err(&pdev->dev, "could not register pinctrl driver\n");
1781 return PTR_ERR(info->pctl_dev);
1782 }
1783
1784 for (bank = 0; bank < info->ctrl->nr_banks; ++bank) {
1785 pin_bank = &info->ctrl->pin_banks[bank];
1786 pin_bank->grange.name = pin_bank->name;
1787 pin_bank->grange.id = bank;
1788 pin_bank->grange.pin_base = pin_bank->pin_base;
1789 pin_bank->grange.base = pin_bank->gpio_chip.base;
1790 pin_bank->grange.npins = pin_bank->gpio_chip.ngpio;
1791 pin_bank->grange.gc = &pin_bank->gpio_chip;
1792 pinctrl_add_gpio_range(info->pctl_dev, &pin_bank->grange);
1793 }
1794
1795 return 0;
1796 }
1797
1798 /*
1799 * GPIO handling
1800 */
1801
1802 static void rockchip_gpio_set(struct gpio_chip *gc, unsigned offset, int value)
1803 {
1804 struct rockchip_pin_bank *bank = gpiochip_get_data(gc);
1805 void __iomem *reg = bank->reg_base + GPIO_SWPORT_DR;
1806 unsigned long flags;
1807 u32 data;
1808
1809 clk_enable(bank->clk);
1810 spin_lock_irqsave(&bank->slock, flags);
1811
1812 data = readl(reg);
1813 data &= ~BIT(offset);
1814 if (value)
1815 data |= BIT(offset);
1816 writel(data, reg);
1817
1818 spin_unlock_irqrestore(&bank->slock, flags);
1819 clk_disable(bank->clk);
1820 }
1821
1822 /*
1823 * Returns the level of the pin for input direction and setting of the DR
1824 * register for output gpios.
1825 */
1826 static int rockchip_gpio_get(struct gpio_chip *gc, unsigned offset)
1827 {
1828 struct rockchip_pin_bank *bank = gpiochip_get_data(gc);
1829 u32 data;
1830
1831 clk_enable(bank->clk);
1832 data = readl(bank->reg_base + GPIO_EXT_PORT);
1833 clk_disable(bank->clk);
1834 data >>= offset;
1835 data &= 1;
1836 return data;
1837 }
1838
1839 /*
1840 * gpiolib gpio_direction_input callback function. The setting of the pin
1841 * mux function as 'gpio input' will be handled by the pinctrl susbsystem
1842 * interface.
1843 */
1844 static int rockchip_gpio_direction_input(struct gpio_chip *gc, unsigned offset)
1845 {
1846 return pinctrl_gpio_direction_input(gc->base + offset);
1847 }
1848
1849 /*
1850 * gpiolib gpio_direction_output callback function. The setting of the pin
1851 * mux function as 'gpio output' will be handled by the pinctrl susbsystem
1852 * interface.
1853 */
1854 static int rockchip_gpio_direction_output(struct gpio_chip *gc,
1855 unsigned offset, int value)
1856 {
1857 rockchip_gpio_set(gc, offset, value);
1858 return pinctrl_gpio_direction_output(gc->base + offset);
1859 }
1860
1861 /*
1862 * gpiolib gpio_to_irq callback function. Creates a mapping between a GPIO pin
1863 * and a virtual IRQ, if not already present.
1864 */
1865 static int rockchip_gpio_to_irq(struct gpio_chip *gc, unsigned offset)
1866 {
1867 struct rockchip_pin_bank *bank = gpiochip_get_data(gc);
1868 unsigned int virq;
1869
1870 if (!bank->domain)
1871 return -ENXIO;
1872
1873 virq = irq_create_mapping(bank->domain, offset);
1874
1875 return (virq) ? : -ENXIO;
1876 }
1877
1878 static const struct gpio_chip rockchip_gpiolib_chip = {
1879 .request = gpiochip_generic_request,
1880 .free = gpiochip_generic_free,
1881 .set = rockchip_gpio_set,
1882 .get = rockchip_gpio_get,
1883 .get_direction = rockchip_gpio_get_direction,
1884 .direction_input = rockchip_gpio_direction_input,
1885 .direction_output = rockchip_gpio_direction_output,
1886 .to_irq = rockchip_gpio_to_irq,
1887 .owner = THIS_MODULE,
1888 };
1889
1890 /*
1891 * Interrupt handling
1892 */
1893
1894 static void rockchip_irq_demux(struct irq_desc *desc)
1895 {
1896 struct irq_chip *chip = irq_desc_get_chip(desc);
1897 struct rockchip_pin_bank *bank = irq_desc_get_handler_data(desc);
1898 u32 pend;
1899
1900 dev_dbg(bank->drvdata->dev, "got irq for bank %s\n", bank->name);
1901
1902 chained_irq_enter(chip, desc);
1903
1904 pend = readl_relaxed(bank->reg_base + GPIO_INT_STATUS);
1905
1906 while (pend) {
1907 unsigned int irq, virq;
1908
1909 irq = __ffs(pend);
1910 pend &= ~BIT(irq);
1911 virq = irq_linear_revmap(bank->domain, irq);
1912
1913 if (!virq) {
1914 dev_err(bank->drvdata->dev, "unmapped irq %d\n", irq);
1915 continue;
1916 }
1917
1918 dev_dbg(bank->drvdata->dev, "handling irq %d\n", irq);
1919
1920 /*
1921 * Triggering IRQ on both rising and falling edge
1922 * needs manual intervention.
1923 */
1924 if (bank->toggle_edge_mode & BIT(irq)) {
1925 u32 data, data_old, polarity;
1926 unsigned long flags;
1927
1928 data = readl_relaxed(bank->reg_base + GPIO_EXT_PORT);
1929 do {
1930 spin_lock_irqsave(&bank->slock, flags);
1931
1932 polarity = readl_relaxed(bank->reg_base +
1933 GPIO_INT_POLARITY);
1934 if (data & BIT(irq))
1935 polarity &= ~BIT(irq);
1936 else
1937 polarity |= BIT(irq);
1938 writel(polarity,
1939 bank->reg_base + GPIO_INT_POLARITY);
1940
1941 spin_unlock_irqrestore(&bank->slock, flags);
1942
1943 data_old = data;
1944 data = readl_relaxed(bank->reg_base +
1945 GPIO_EXT_PORT);
1946 } while ((data & BIT(irq)) != (data_old & BIT(irq)));
1947 }
1948
1949 generic_handle_irq(virq);
1950 }
1951
1952 chained_irq_exit(chip, desc);
1953 }
1954
1955 static int rockchip_irq_set_type(struct irq_data *d, unsigned int type)
1956 {
1957 struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
1958 struct rockchip_pin_bank *bank = gc->private;
1959 u32 mask = BIT(d->hwirq);
1960 u32 polarity;
1961 u32 level;
1962 u32 data;
1963 unsigned long flags;
1964 int ret;
1965
1966 /* make sure the pin is configured as gpio input */
1967 ret = rockchip_set_mux(bank, d->hwirq, RK_FUNC_GPIO);
1968 if (ret < 0)
1969 return ret;
1970
1971 clk_enable(bank->clk);
1972 spin_lock_irqsave(&bank->slock, flags);
1973
1974 data = readl_relaxed(bank->reg_base + GPIO_SWPORT_DDR);
1975 data &= ~mask;
1976 writel_relaxed(data, bank->reg_base + GPIO_SWPORT_DDR);
1977
1978 spin_unlock_irqrestore(&bank->slock, flags);
1979
1980 if (type & IRQ_TYPE_EDGE_BOTH)
1981 irq_set_handler_locked(d, handle_edge_irq);
1982 else
1983 irq_set_handler_locked(d, handle_level_irq);
1984
1985 spin_lock_irqsave(&bank->slock, flags);
1986 irq_gc_lock(gc);
1987
1988 level = readl_relaxed(gc->reg_base + GPIO_INTTYPE_LEVEL);
1989 polarity = readl_relaxed(gc->reg_base + GPIO_INT_POLARITY);
1990
1991 switch (type) {
1992 case IRQ_TYPE_EDGE_BOTH:
1993 bank->toggle_edge_mode |= mask;
1994 level |= mask;
1995
1996 /*
1997 * Determine gpio state. If 1 next interrupt should be falling
1998 * otherwise rising.
1999 */
2000 data = readl(bank->reg_base + GPIO_EXT_PORT);
2001 if (data & mask)
2002 polarity &= ~mask;
2003 else
2004 polarity |= mask;
2005 break;
2006 case IRQ_TYPE_EDGE_RISING:
2007 bank->toggle_edge_mode &= ~mask;
2008 level |= mask;
2009 polarity |= mask;
2010 break;
2011 case IRQ_TYPE_EDGE_FALLING:
2012 bank->toggle_edge_mode &= ~mask;
2013 level |= mask;
2014 polarity &= ~mask;
2015 break;
2016 case IRQ_TYPE_LEVEL_HIGH:
2017 bank->toggle_edge_mode &= ~mask;
2018 level &= ~mask;
2019 polarity |= mask;
2020 break;
2021 case IRQ_TYPE_LEVEL_LOW:
2022 bank->toggle_edge_mode &= ~mask;
2023 level &= ~mask;
2024 polarity &= ~mask;
2025 break;
2026 default:
2027 irq_gc_unlock(gc);
2028 spin_unlock_irqrestore(&bank->slock, flags);
2029 clk_disable(bank->clk);
2030 return -EINVAL;
2031 }
2032
2033 writel_relaxed(level, gc->reg_base + GPIO_INTTYPE_LEVEL);
2034 writel_relaxed(polarity, gc->reg_base + GPIO_INT_POLARITY);
2035
2036 irq_gc_unlock(gc);
2037 spin_unlock_irqrestore(&bank->slock, flags);
2038 clk_disable(bank->clk);
2039
2040 return 0;
2041 }
2042
2043 static void rockchip_irq_suspend(struct irq_data *d)
2044 {
2045 struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
2046 struct rockchip_pin_bank *bank = gc->private;
2047
2048 clk_enable(bank->clk);
2049 bank->saved_masks = irq_reg_readl(gc, GPIO_INTMASK);
2050 irq_reg_writel(gc, ~gc->wake_active, GPIO_INTMASK);
2051 clk_disable(bank->clk);
2052 }
2053
2054 static void rockchip_irq_resume(struct irq_data *d)
2055 {
2056 struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
2057 struct rockchip_pin_bank *bank = gc->private;
2058
2059 clk_enable(bank->clk);
2060 irq_reg_writel(gc, bank->saved_masks, GPIO_INTMASK);
2061 clk_disable(bank->clk);
2062 }
2063
2064 static void rockchip_irq_gc_mask_clr_bit(struct irq_data *d)
2065 {
2066 struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
2067 struct rockchip_pin_bank *bank = gc->private;
2068
2069 clk_enable(bank->clk);
2070 irq_gc_mask_clr_bit(d);
2071 }
2072
2073 static void rockchip_irq_gc_mask_set_bit(struct irq_data *d)
2074 {
2075 struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
2076 struct rockchip_pin_bank *bank = gc->private;
2077
2078 irq_gc_mask_set_bit(d);
2079 clk_disable(bank->clk);
2080 }
2081
2082 static int rockchip_interrupts_register(struct platform_device *pdev,
2083 struct rockchip_pinctrl *info)
2084 {
2085 struct rockchip_pin_ctrl *ctrl = info->ctrl;
2086 struct rockchip_pin_bank *bank = ctrl->pin_banks;
2087 unsigned int clr = IRQ_NOREQUEST | IRQ_NOPROBE | IRQ_NOAUTOEN;
2088 struct irq_chip_generic *gc;
2089 int ret;
2090 int i, j;
2091
2092 for (i = 0; i < ctrl->nr_banks; ++i, ++bank) {
2093 if (!bank->valid) {
2094 dev_warn(&pdev->dev, "bank %s is not valid\n",
2095 bank->name);
2096 continue;
2097 }
2098
2099 ret = clk_enable(bank->clk);
2100 if (ret) {
2101 dev_err(&pdev->dev, "failed to enable clock for bank %s\n",
2102 bank->name);
2103 continue;
2104 }
2105
2106 bank->domain = irq_domain_add_linear(bank->of_node, 32,
2107 &irq_generic_chip_ops, NULL);
2108 if (!bank->domain) {
2109 dev_warn(&pdev->dev, "could not initialize irq domain for bank %s\n",
2110 bank->name);
2111 clk_disable(bank->clk);
2112 continue;
2113 }
2114
2115 ret = irq_alloc_domain_generic_chips(bank->domain, 32, 1,
2116 "rockchip_gpio_irq", handle_level_irq,
2117 clr, 0, IRQ_GC_INIT_MASK_CACHE);
2118 if (ret) {
2119 dev_err(&pdev->dev, "could not alloc generic chips for bank %s\n",
2120 bank->name);
2121 irq_domain_remove(bank->domain);
2122 clk_disable(bank->clk);
2123 continue;
2124 }
2125
2126 /*
2127 * Linux assumes that all interrupts start out disabled/masked.
2128 * Our driver only uses the concept of masked and always keeps
2129 * things enabled, so for us that's all masked and all enabled.
2130 */
2131 writel_relaxed(0xffffffff, bank->reg_base + GPIO_INTMASK);
2132 writel_relaxed(0xffffffff, bank->reg_base + GPIO_INTEN);
2133
2134 gc = irq_get_domain_generic_chip(bank->domain, 0);
2135 gc->reg_base = bank->reg_base;
2136 gc->private = bank;
2137 gc->chip_types[0].regs.mask = GPIO_INTMASK;
2138 gc->chip_types[0].regs.ack = GPIO_PORTS_EOI;
2139 gc->chip_types[0].chip.irq_ack = irq_gc_ack_set_bit;
2140 gc->chip_types[0].chip.irq_mask = rockchip_irq_gc_mask_set_bit;
2141 gc->chip_types[0].chip.irq_unmask =
2142 rockchip_irq_gc_mask_clr_bit;
2143 gc->chip_types[0].chip.irq_set_wake = irq_gc_set_wake;
2144 gc->chip_types[0].chip.irq_suspend = rockchip_irq_suspend;
2145 gc->chip_types[0].chip.irq_resume = rockchip_irq_resume;
2146 gc->chip_types[0].chip.irq_set_type = rockchip_irq_set_type;
2147 gc->wake_enabled = IRQ_MSK(bank->nr_pins);
2148
2149 irq_set_chained_handler_and_data(bank->irq,
2150 rockchip_irq_demux, bank);
2151
2152 /* map the gpio irqs here, when the clock is still running */
2153 for (j = 0 ; j < 32 ; j++)
2154 irq_create_mapping(bank->domain, j);
2155
2156 clk_disable(bank->clk);
2157 }
2158
2159 return 0;
2160 }
2161
2162 static int rockchip_gpiolib_register(struct platform_device *pdev,
2163 struct rockchip_pinctrl *info)
2164 {
2165 struct rockchip_pin_ctrl *ctrl = info->ctrl;
2166 struct rockchip_pin_bank *bank = ctrl->pin_banks;
2167 struct gpio_chip *gc;
2168 int ret;
2169 int i;
2170
2171 for (i = 0; i < ctrl->nr_banks; ++i, ++bank) {
2172 if (!bank->valid) {
2173 dev_warn(&pdev->dev, "bank %s is not valid\n",
2174 bank->name);
2175 continue;
2176 }
2177
2178 bank->gpio_chip = rockchip_gpiolib_chip;
2179
2180 gc = &bank->gpio_chip;
2181 gc->base = bank->pin_base;
2182 gc->ngpio = bank->nr_pins;
2183 gc->parent = &pdev->dev;
2184 gc->of_node = bank->of_node;
2185 gc->label = bank->name;
2186
2187 ret = gpiochip_add_data(gc, bank);
2188 if (ret) {
2189 dev_err(&pdev->dev, "failed to register gpio_chip %s, error code: %d\n",
2190 gc->label, ret);
2191 goto fail;
2192 }
2193 }
2194
2195 rockchip_interrupts_register(pdev, info);
2196
2197 return 0;
2198
2199 fail:
2200 for (--i, --bank; i >= 0; --i, --bank) {
2201 if (!bank->valid)
2202 continue;
2203 gpiochip_remove(&bank->gpio_chip);
2204 }
2205 return ret;
2206 }
2207
2208 static int rockchip_gpiolib_unregister(struct platform_device *pdev,
2209 struct rockchip_pinctrl *info)
2210 {
2211 struct rockchip_pin_ctrl *ctrl = info->ctrl;
2212 struct rockchip_pin_bank *bank = ctrl->pin_banks;
2213 int i;
2214
2215 for (i = 0; i < ctrl->nr_banks; ++i, ++bank) {
2216 if (!bank->valid)
2217 continue;
2218 gpiochip_remove(&bank->gpio_chip);
2219 }
2220
2221 return 0;
2222 }
2223
2224 static int rockchip_get_bank_data(struct rockchip_pin_bank *bank,
2225 struct rockchip_pinctrl *info)
2226 {
2227 struct resource res;
2228 void __iomem *base;
2229
2230 if (of_address_to_resource(bank->of_node, 0, &res)) {
2231 dev_err(info->dev, "cannot find IO resource for bank\n");
2232 return -ENOENT;
2233 }
2234
2235 bank->reg_base = devm_ioremap_resource(info->dev, &res);
2236 if (IS_ERR(bank->reg_base))
2237 return PTR_ERR(bank->reg_base);
2238
2239 /*
2240 * special case, where parts of the pull setting-registers are
2241 * part of the PMU register space
2242 */
2243 if (of_device_is_compatible(bank->of_node,
2244 "rockchip,rk3188-gpio-bank0")) {
2245 struct device_node *node;
2246
2247 node = of_parse_phandle(bank->of_node->parent,
2248 "rockchip,pmu", 0);
2249 if (!node) {
2250 if (of_address_to_resource(bank->of_node, 1, &res)) {
2251 dev_err(info->dev, "cannot find IO resource for bank\n");
2252 return -ENOENT;
2253 }
2254
2255 base = devm_ioremap_resource(info->dev, &res);
2256 if (IS_ERR(base))
2257 return PTR_ERR(base);
2258 rockchip_regmap_config.max_register =
2259 resource_size(&res) - 4;
2260 rockchip_regmap_config.name =
2261 "rockchip,rk3188-gpio-bank0-pull";
2262 bank->regmap_pull = devm_regmap_init_mmio(info->dev,
2263 base,
2264 &rockchip_regmap_config);
2265 }
2266 }
2267
2268 bank->irq = irq_of_parse_and_map(bank->of_node, 0);
2269
2270 bank->clk = of_clk_get(bank->of_node, 0);
2271 if (IS_ERR(bank->clk))
2272 return PTR_ERR(bank->clk);
2273
2274 return clk_prepare(bank->clk);
2275 }
2276
2277 static const struct of_device_id rockchip_pinctrl_dt_match[];
2278
2279 /* retrieve the soc specific data */
2280 static struct rockchip_pin_ctrl *rockchip_pinctrl_get_soc_data(
2281 struct rockchip_pinctrl *d,
2282 struct platform_device *pdev)
2283 {
2284 const struct of_device_id *match;
2285 struct device_node *node = pdev->dev.of_node;
2286 struct device_node *np;
2287 struct rockchip_pin_ctrl *ctrl;
2288 struct rockchip_pin_bank *bank;
2289 int grf_offs, pmu_offs, drv_grf_offs, drv_pmu_offs, i, j;
2290
2291 match = of_match_node(rockchip_pinctrl_dt_match, node);
2292 ctrl = (struct rockchip_pin_ctrl *)match->data;
2293
2294 for_each_child_of_node(node, np) {
2295 if (!of_find_property(np, "gpio-controller", NULL))
2296 continue;
2297
2298 bank = ctrl->pin_banks;
2299 for (i = 0; i < ctrl->nr_banks; ++i, ++bank) {
2300 if (!strcmp(bank->name, np->name)) {
2301 bank->of_node = np;
2302
2303 if (!rockchip_get_bank_data(bank, d))
2304 bank->valid = true;
2305
2306 break;
2307 }
2308 }
2309 }
2310
2311 grf_offs = ctrl->grf_mux_offset;
2312 pmu_offs = ctrl->pmu_mux_offset;
2313 drv_pmu_offs = ctrl->pmu_drv_offset;
2314 drv_grf_offs = ctrl->grf_drv_offset;
2315 bank = ctrl->pin_banks;
2316 for (i = 0; i < ctrl->nr_banks; ++i, ++bank) {
2317 int bank_pins = 0;
2318
2319 spin_lock_init(&bank->slock);
2320 bank->drvdata = d;
2321 bank->pin_base = ctrl->nr_pins;
2322 ctrl->nr_pins += bank->nr_pins;
2323
2324 /* calculate iomux and drv offsets */
2325 for (j = 0; j < 4; j++) {
2326 struct rockchip_iomux *iom = &bank->iomux[j];
2327 struct rockchip_drv *drv = &bank->drv[j];
2328 int inc;
2329
2330 if (bank_pins >= bank->nr_pins)
2331 break;
2332
2333 /* preset iomux offset value, set new start value */
2334 if (iom->offset >= 0) {
2335 if (iom->type & IOMUX_SOURCE_PMU)
2336 pmu_offs = iom->offset;
2337 else
2338 grf_offs = iom->offset;
2339 } else { /* set current iomux offset */
2340 iom->offset = (iom->type & IOMUX_SOURCE_PMU) ?
2341 pmu_offs : grf_offs;
2342 }
2343
2344 /* preset drv offset value, set new start value */
2345 if (drv->offset >= 0) {
2346 if (iom->type & IOMUX_SOURCE_PMU)
2347 drv_pmu_offs = drv->offset;
2348 else
2349 drv_grf_offs = drv->offset;
2350 } else { /* set current drv offset */
2351 drv->offset = (iom->type & IOMUX_SOURCE_PMU) ?
2352 drv_pmu_offs : drv_grf_offs;
2353 }
2354
2355 dev_dbg(d->dev, "bank %d, iomux %d has iom_offset 0x%x drv_offset 0x%x\n",
2356 i, j, iom->offset, drv->offset);
2357
2358 /*
2359 * Increase offset according to iomux width.
2360 * 4bit iomux'es are spread over two registers.
2361 */
2362 inc = (iom->type & IOMUX_WIDTH_4BIT) ? 8 : 4;
2363 if (iom->type & IOMUX_SOURCE_PMU)
2364 pmu_offs += inc;
2365 else
2366 grf_offs += inc;
2367
2368 /*
2369 * Increase offset according to drv width.
2370 * 3bit drive-strenth'es are spread over two registers.
2371 */
2372 if ((drv->drv_type == DRV_TYPE_IO_1V8_3V0_AUTO) ||
2373 (drv->drv_type == DRV_TYPE_IO_3V3_ONLY))
2374 inc = 8;
2375 else
2376 inc = 4;
2377
2378 if (iom->type & IOMUX_SOURCE_PMU)
2379 drv_pmu_offs += inc;
2380 else
2381 drv_grf_offs += inc;
2382
2383 bank_pins += 8;
2384 }
2385 }
2386
2387 return ctrl;
2388 }
2389
2390 #define RK3288_GRF_GPIO6C_IOMUX 0x64
2391 #define GPIO6C6_SEL_WRITE_ENABLE BIT(28)
2392
2393 static u32 rk3288_grf_gpio6c_iomux;
2394
2395 static int __maybe_unused rockchip_pinctrl_suspend(struct device *dev)
2396 {
2397 struct rockchip_pinctrl *info = dev_get_drvdata(dev);
2398 int ret = pinctrl_force_sleep(info->pctl_dev);
2399
2400 if (ret)
2401 return ret;
2402
2403 /*
2404 * RK3288 GPIO6_C6 mux would be modified by Maskrom when resume, so save
2405 * the setting here, and restore it at resume.
2406 */
2407 if (info->ctrl->type == RK3288) {
2408 ret = regmap_read(info->regmap_base, RK3288_GRF_GPIO6C_IOMUX,
2409 &rk3288_grf_gpio6c_iomux);
2410 if (ret) {
2411 pinctrl_force_default(info->pctl_dev);
2412 return ret;
2413 }
2414 }
2415
2416 return 0;
2417 }
2418
2419 static int __maybe_unused rockchip_pinctrl_resume(struct device *dev)
2420 {
2421 struct rockchip_pinctrl *info = dev_get_drvdata(dev);
2422 int ret = regmap_write(info->regmap_base, RK3288_GRF_GPIO6C_IOMUX,
2423 rk3288_grf_gpio6c_iomux |
2424 GPIO6C6_SEL_WRITE_ENABLE);
2425
2426 if (ret)
2427 return ret;
2428
2429 return pinctrl_force_default(info->pctl_dev);
2430 }
2431
2432 static SIMPLE_DEV_PM_OPS(rockchip_pinctrl_dev_pm_ops, rockchip_pinctrl_suspend,
2433 rockchip_pinctrl_resume);
2434
2435 static int rockchip_pinctrl_probe(struct platform_device *pdev)
2436 {
2437 struct rockchip_pinctrl *info;
2438 struct device *dev = &pdev->dev;
2439 struct rockchip_pin_ctrl *ctrl;
2440 struct device_node *np = pdev->dev.of_node, *node;
2441 struct resource *res;
2442 void __iomem *base;
2443 int ret;
2444
2445 if (!dev->of_node) {
2446 dev_err(dev, "device tree node not found\n");
2447 return -ENODEV;
2448 }
2449
2450 info = devm_kzalloc(dev, sizeof(struct rockchip_pinctrl), GFP_KERNEL);
2451 if (!info)
2452 return -ENOMEM;
2453
2454 info->dev = dev;
2455
2456 ctrl = rockchip_pinctrl_get_soc_data(info, pdev);
2457 if (!ctrl) {
2458 dev_err(dev, "driver data not available\n");
2459 return -EINVAL;
2460 }
2461 info->ctrl = ctrl;
2462
2463 node = of_parse_phandle(np, "rockchip,grf", 0);
2464 if (node) {
2465 info->regmap_base = syscon_node_to_regmap(node);
2466 if (IS_ERR(info->regmap_base))
2467 return PTR_ERR(info->regmap_base);
2468 } else {
2469 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2470 base = devm_ioremap_resource(&pdev->dev, res);
2471 if (IS_ERR(base))
2472 return PTR_ERR(base);
2473
2474 rockchip_regmap_config.max_register = resource_size(res) - 4;
2475 rockchip_regmap_config.name = "rockchip,pinctrl";
2476 info->regmap_base = devm_regmap_init_mmio(&pdev->dev, base,
2477 &rockchip_regmap_config);
2478
2479 /* to check for the old dt-bindings */
2480 info->reg_size = resource_size(res);
2481
2482 /* Honor the old binding, with pull registers as 2nd resource */
2483 if (ctrl->type == RK3188 && info->reg_size < 0x200) {
2484 res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
2485 base = devm_ioremap_resource(&pdev->dev, res);
2486 if (IS_ERR(base))
2487 return PTR_ERR(base);
2488
2489 rockchip_regmap_config.max_register =
2490 resource_size(res) - 4;
2491 rockchip_regmap_config.name = "rockchip,pinctrl-pull";
2492 info->regmap_pull = devm_regmap_init_mmio(&pdev->dev,
2493 base,
2494 &rockchip_regmap_config);
2495 }
2496 }
2497
2498 /* try to find the optional reference to the pmu syscon */
2499 node = of_parse_phandle(np, "rockchip,pmu", 0);
2500 if (node) {
2501 info->regmap_pmu = syscon_node_to_regmap(node);
2502 if (IS_ERR(info->regmap_pmu))
2503 return PTR_ERR(info->regmap_pmu);
2504 }
2505
2506 ret = rockchip_gpiolib_register(pdev, info);
2507 if (ret)
2508 return ret;
2509
2510 ret = rockchip_pinctrl_register(pdev, info);
2511 if (ret) {
2512 rockchip_gpiolib_unregister(pdev, info);
2513 return ret;
2514 }
2515
2516 platform_set_drvdata(pdev, info);
2517
2518 return 0;
2519 }
2520
2521 static struct rockchip_pin_bank rk1108_pin_banks[] = {
2522 PIN_BANK_IOMUX_FLAGS(0, 32, "gpio0", IOMUX_SOURCE_PMU,
2523 IOMUX_SOURCE_PMU,
2524 IOMUX_SOURCE_PMU,
2525 IOMUX_SOURCE_PMU),
2526 PIN_BANK_IOMUX_FLAGS(1, 32, "gpio1", 0, 0, 0, 0),
2527 PIN_BANK_IOMUX_FLAGS(2, 32, "gpio2", 0, 0, 0, 0),
2528 PIN_BANK_IOMUX_FLAGS(3, 32, "gpio3", 0, 0, 0, 0),
2529 };
2530
2531 static struct rockchip_pin_ctrl rk1108_pin_ctrl = {
2532 .pin_banks = rk1108_pin_banks,
2533 .nr_banks = ARRAY_SIZE(rk1108_pin_banks),
2534 .label = "RK1108-GPIO",
2535 .type = RK1108,
2536 .grf_mux_offset = 0x10,
2537 .pmu_mux_offset = 0x0,
2538 .pull_calc_reg = rk1108_calc_pull_reg_and_bit,
2539 .drv_calc_reg = rk1108_calc_drv_reg_and_bit,
2540 };
2541
2542 static struct rockchip_pin_bank rk2928_pin_banks[] = {
2543 PIN_BANK(0, 32, "gpio0"),
2544 PIN_BANK(1, 32, "gpio1"),
2545 PIN_BANK(2, 32, "gpio2"),
2546 PIN_BANK(3, 32, "gpio3"),
2547 };
2548
2549 static struct rockchip_pin_ctrl rk2928_pin_ctrl = {
2550 .pin_banks = rk2928_pin_banks,
2551 .nr_banks = ARRAY_SIZE(rk2928_pin_banks),
2552 .label = "RK2928-GPIO",
2553 .type = RK2928,
2554 .grf_mux_offset = 0xa8,
2555 .pull_calc_reg = rk2928_calc_pull_reg_and_bit,
2556 };
2557
2558 static struct rockchip_pin_bank rk3036_pin_banks[] = {
2559 PIN_BANK(0, 32, "gpio0"),
2560 PIN_BANK(1, 32, "gpio1"),
2561 PIN_BANK(2, 32, "gpio2"),
2562 };
2563
2564 static struct rockchip_pin_ctrl rk3036_pin_ctrl = {
2565 .pin_banks = rk3036_pin_banks,
2566 .nr_banks = ARRAY_SIZE(rk3036_pin_banks),
2567 .label = "RK3036-GPIO",
2568 .type = RK2928,
2569 .grf_mux_offset = 0xa8,
2570 .pull_calc_reg = rk2928_calc_pull_reg_and_bit,
2571 };
2572
2573 static struct rockchip_pin_bank rk3066a_pin_banks[] = {
2574 PIN_BANK(0, 32, "gpio0"),
2575 PIN_BANK(1, 32, "gpio1"),
2576 PIN_BANK(2, 32, "gpio2"),
2577 PIN_BANK(3, 32, "gpio3"),
2578 PIN_BANK(4, 32, "gpio4"),
2579 PIN_BANK(6, 16, "gpio6"),
2580 };
2581
2582 static struct rockchip_pin_ctrl rk3066a_pin_ctrl = {
2583 .pin_banks = rk3066a_pin_banks,
2584 .nr_banks = ARRAY_SIZE(rk3066a_pin_banks),
2585 .label = "RK3066a-GPIO",
2586 .type = RK2928,
2587 .grf_mux_offset = 0xa8,
2588 .pull_calc_reg = rk2928_calc_pull_reg_and_bit,
2589 };
2590
2591 static struct rockchip_pin_bank rk3066b_pin_banks[] = {
2592 PIN_BANK(0, 32, "gpio0"),
2593 PIN_BANK(1, 32, "gpio1"),
2594 PIN_BANK(2, 32, "gpio2"),
2595 PIN_BANK(3, 32, "gpio3"),
2596 };
2597
2598 static struct rockchip_pin_ctrl rk3066b_pin_ctrl = {
2599 .pin_banks = rk3066b_pin_banks,
2600 .nr_banks = ARRAY_SIZE(rk3066b_pin_banks),
2601 .label = "RK3066b-GPIO",
2602 .type = RK3066B,
2603 .grf_mux_offset = 0x60,
2604 };
2605
2606 static struct rockchip_pin_bank rk3188_pin_banks[] = {
2607 PIN_BANK_IOMUX_FLAGS(0, 32, "gpio0", IOMUX_GPIO_ONLY, 0, 0, 0),
2608 PIN_BANK(1, 32, "gpio1"),
2609 PIN_BANK(2, 32, "gpio2"),
2610 PIN_BANK(3, 32, "gpio3"),
2611 };
2612
2613 static struct rockchip_pin_ctrl rk3188_pin_ctrl = {
2614 .pin_banks = rk3188_pin_banks,
2615 .nr_banks = ARRAY_SIZE(rk3188_pin_banks),
2616 .label = "RK3188-GPIO",
2617 .type = RK3188,
2618 .grf_mux_offset = 0x60,
2619 .pull_calc_reg = rk3188_calc_pull_reg_and_bit,
2620 };
2621
2622 static struct rockchip_pin_bank rk3228_pin_banks[] = {
2623 PIN_BANK(0, 32, "gpio0"),
2624 PIN_BANK(1, 32, "gpio1"),
2625 PIN_BANK(2, 32, "gpio2"),
2626 PIN_BANK(3, 32, "gpio3"),
2627 };
2628
2629 static struct rockchip_pin_ctrl rk3228_pin_ctrl = {
2630 .pin_banks = rk3228_pin_banks,
2631 .nr_banks = ARRAY_SIZE(rk3228_pin_banks),
2632 .label = "RK3228-GPIO",
2633 .type = RK3288,
2634 .grf_mux_offset = 0x0,
2635 .pull_calc_reg = rk3228_calc_pull_reg_and_bit,
2636 .drv_calc_reg = rk3228_calc_drv_reg_and_bit,
2637 };
2638
2639 static struct rockchip_pin_bank rk3288_pin_banks[] = {
2640 PIN_BANK_IOMUX_FLAGS(0, 24, "gpio0", IOMUX_SOURCE_PMU,
2641 IOMUX_SOURCE_PMU,
2642 IOMUX_SOURCE_PMU,
2643 IOMUX_UNROUTED
2644 ),
2645 PIN_BANK_IOMUX_FLAGS(1, 32, "gpio1", IOMUX_UNROUTED,
2646 IOMUX_UNROUTED,
2647 IOMUX_UNROUTED,
2648 0
2649 ),
2650 PIN_BANK_IOMUX_FLAGS(2, 32, "gpio2", 0, 0, 0, IOMUX_UNROUTED),
2651 PIN_BANK_IOMUX_FLAGS(3, 32, "gpio3", 0, 0, 0, IOMUX_WIDTH_4BIT),
2652 PIN_BANK_IOMUX_FLAGS(4, 32, "gpio4", IOMUX_WIDTH_4BIT,
2653 IOMUX_WIDTH_4BIT,
2654 0,
2655 0
2656 ),
2657 PIN_BANK_IOMUX_FLAGS(5, 32, "gpio5", IOMUX_UNROUTED,
2658 0,
2659 0,
2660 IOMUX_UNROUTED
2661 ),
2662 PIN_BANK_IOMUX_FLAGS(6, 32, "gpio6", 0, 0, 0, IOMUX_UNROUTED),
2663 PIN_BANK_IOMUX_FLAGS(7, 32, "gpio7", 0,
2664 0,
2665 IOMUX_WIDTH_4BIT,
2666 IOMUX_UNROUTED
2667 ),
2668 PIN_BANK(8, 16, "gpio8"),
2669 };
2670
2671 static struct rockchip_pin_ctrl rk3288_pin_ctrl = {
2672 .pin_banks = rk3288_pin_banks,
2673 .nr_banks = ARRAY_SIZE(rk3288_pin_banks),
2674 .label = "RK3288-GPIO",
2675 .type = RK3288,
2676 .grf_mux_offset = 0x0,
2677 .pmu_mux_offset = 0x84,
2678 .pull_calc_reg = rk3288_calc_pull_reg_and_bit,
2679 .drv_calc_reg = rk3288_calc_drv_reg_and_bit,
2680 };
2681
2682 static struct rockchip_pin_bank rk3368_pin_banks[] = {
2683 PIN_BANK_IOMUX_FLAGS(0, 32, "gpio0", IOMUX_SOURCE_PMU,
2684 IOMUX_SOURCE_PMU,
2685 IOMUX_SOURCE_PMU,
2686 IOMUX_SOURCE_PMU
2687 ),
2688 PIN_BANK(1, 32, "gpio1"),
2689 PIN_BANK(2, 32, "gpio2"),
2690 PIN_BANK(3, 32, "gpio3"),
2691 };
2692
2693 static struct rockchip_pin_ctrl rk3368_pin_ctrl = {
2694 .pin_banks = rk3368_pin_banks,
2695 .nr_banks = ARRAY_SIZE(rk3368_pin_banks),
2696 .label = "RK3368-GPIO",
2697 .type = RK3368,
2698 .grf_mux_offset = 0x0,
2699 .pmu_mux_offset = 0x0,
2700 .pull_calc_reg = rk3368_calc_pull_reg_and_bit,
2701 .drv_calc_reg = rk3368_calc_drv_reg_and_bit,
2702 };
2703
2704 static struct rockchip_pin_bank rk3399_pin_banks[] = {
2705 PIN_BANK_IOMUX_FLAGS_DRV_FLAGS_OFFSET_PULL_FLAGS(0, 32, "gpio0",
2706 IOMUX_SOURCE_PMU,
2707 IOMUX_SOURCE_PMU,
2708 IOMUX_SOURCE_PMU,
2709 IOMUX_SOURCE_PMU,
2710 DRV_TYPE_IO_1V8_ONLY,
2711 DRV_TYPE_IO_1V8_ONLY,
2712 DRV_TYPE_IO_DEFAULT,
2713 DRV_TYPE_IO_DEFAULT,
2714 0x0,
2715 0x8,
2716 -1,
2717 -1,
2718 PULL_TYPE_IO_1V8_ONLY,
2719 PULL_TYPE_IO_1V8_ONLY,
2720 PULL_TYPE_IO_DEFAULT,
2721 PULL_TYPE_IO_DEFAULT
2722 ),
2723 PIN_BANK_IOMUX_DRV_FLAGS_OFFSET(1, 32, "gpio1", IOMUX_SOURCE_PMU,
2724 IOMUX_SOURCE_PMU,
2725 IOMUX_SOURCE_PMU,
2726 IOMUX_SOURCE_PMU,
2727 DRV_TYPE_IO_1V8_OR_3V0,
2728 DRV_TYPE_IO_1V8_OR_3V0,
2729 DRV_TYPE_IO_1V8_OR_3V0,
2730 DRV_TYPE_IO_1V8_OR_3V0,
2731 0x20,
2732 0x28,
2733 0x30,
2734 0x38
2735 ),
2736 PIN_BANK_DRV_FLAGS_PULL_FLAGS(2, 32, "gpio2", DRV_TYPE_IO_1V8_OR_3V0,
2737 DRV_TYPE_IO_1V8_OR_3V0,
2738 DRV_TYPE_IO_1V8_ONLY,
2739 DRV_TYPE_IO_1V8_ONLY,
2740 PULL_TYPE_IO_DEFAULT,
2741 PULL_TYPE_IO_DEFAULT,
2742 PULL_TYPE_IO_1V8_ONLY,
2743 PULL_TYPE_IO_1V8_ONLY
2744 ),
2745 PIN_BANK_DRV_FLAGS(3, 32, "gpio3", DRV_TYPE_IO_3V3_ONLY,
2746 DRV_TYPE_IO_3V3_ONLY,
2747 DRV_TYPE_IO_3V3_ONLY,
2748 DRV_TYPE_IO_1V8_OR_3V0
2749 ),
2750 PIN_BANK_DRV_FLAGS(4, 32, "gpio4", DRV_TYPE_IO_1V8_OR_3V0,
2751 DRV_TYPE_IO_1V8_3V0_AUTO,
2752 DRV_TYPE_IO_1V8_OR_3V0,
2753 DRV_TYPE_IO_1V8_OR_3V0
2754 ),
2755 };
2756
2757 static struct rockchip_pin_ctrl rk3399_pin_ctrl = {
2758 .pin_banks = rk3399_pin_banks,
2759 .nr_banks = ARRAY_SIZE(rk3399_pin_banks),
2760 .label = "RK3399-GPIO",
2761 .type = RK3399,
2762 .grf_mux_offset = 0xe000,
2763 .pmu_mux_offset = 0x0,
2764 .grf_drv_offset = 0xe100,
2765 .pmu_drv_offset = 0x80,
2766 .pull_calc_reg = rk3399_calc_pull_reg_and_bit,
2767 .drv_calc_reg = rk3399_calc_drv_reg_and_bit,
2768 };
2769
2770 static const struct of_device_id rockchip_pinctrl_dt_match[] = {
2771 { .compatible = "rockchip,rk1108-pinctrl",
2772 .data = (void *)&rk1108_pin_ctrl },
2773 { .compatible = "rockchip,rk2928-pinctrl",
2774 .data = (void *)&rk2928_pin_ctrl },
2775 { .compatible = "rockchip,rk3036-pinctrl",
2776 .data = (void *)&rk3036_pin_ctrl },
2777 { .compatible = "rockchip,rk3066a-pinctrl",
2778 .data = (void *)&rk3066a_pin_ctrl },
2779 { .compatible = "rockchip,rk3066b-pinctrl",
2780 .data = (void *)&rk3066b_pin_ctrl },
2781 { .compatible = "rockchip,rk3188-pinctrl",
2782 .data = (void *)&rk3188_pin_ctrl },
2783 { .compatible = "rockchip,rk3228-pinctrl",
2784 .data = (void *)&rk3228_pin_ctrl },
2785 { .compatible = "rockchip,rk3288-pinctrl",
2786 .data = (void *)&rk3288_pin_ctrl },
2787 { .compatible = "rockchip,rk3368-pinctrl",
2788 .data = (void *)&rk3368_pin_ctrl },
2789 { .compatible = "rockchip,rk3399-pinctrl",
2790 .data = (void *)&rk3399_pin_ctrl },
2791 {},
2792 };
2793
2794 static struct platform_driver rockchip_pinctrl_driver = {
2795 .probe = rockchip_pinctrl_probe,
2796 .driver = {
2797 .name = "rockchip-pinctrl",
2798 .pm = &rockchip_pinctrl_dev_pm_ops,
2799 .of_match_table = rockchip_pinctrl_dt_match,
2800 },
2801 };
2802
2803 static int __init rockchip_pinctrl_drv_register(void)
2804 {
2805 return platform_driver_register(&rockchip_pinctrl_driver);
2806 }
2807 postcore_initcall(rockchip_pinctrl_drv_register);
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