xref: /linux/drivers/pinctrl/pinctrl-rockchip.c (revision 6ede2b7df92f4f8da1abfa831a038688fcf409ea)
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 	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 #define IOMUX_WIDTH_3BIT	BIT(4)
79 #define IOMUX_RECALCED		BIT(5)
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  */
147 struct rockchip_pin_bank {
148 	void __iomem			*reg_base;
149 	struct regmap			*regmap_pull;
150 	struct clk			*clk;
151 	int				irq;
152 	u32				saved_masks;
153 	u32				pin_base;
154 	u8				nr_pins;
155 	char				*name;
156 	u8				bank_num;
157 	struct rockchip_iomux		iomux[4];
158 	struct rockchip_drv		drv[4];
159 	enum rockchip_pin_pull_type	pull_type[4];
160 	bool				valid;
161 	struct device_node		*of_node;
162 	struct rockchip_pinctrl		*drvdata;
163 	struct irq_domain		*domain;
164 	struct gpio_chip		gpio_chip;
165 	struct pinctrl_gpio_range	grange;
166 	raw_spinlock_t			slock;
167 	u32				toggle_edge_mode;
168 };
169 
170 #define PIN_BANK(id, pins, label)			\
171 	{						\
172 		.bank_num	= id,			\
173 		.nr_pins	= pins,			\
174 		.name		= label,		\
175 		.iomux		= {			\
176 			{ .offset = -1 },		\
177 			{ .offset = -1 },		\
178 			{ .offset = -1 },		\
179 			{ .offset = -1 },		\
180 		},					\
181 	}
182 
183 #define PIN_BANK_IOMUX_FLAGS(id, pins, label, iom0, iom1, iom2, iom3)	\
184 	{								\
185 		.bank_num	= id,					\
186 		.nr_pins	= pins,					\
187 		.name		= label,				\
188 		.iomux		= {					\
189 			{ .type = iom0, .offset = -1 },			\
190 			{ .type = iom1, .offset = -1 },			\
191 			{ .type = iom2, .offset = -1 },			\
192 			{ .type = iom3, .offset = -1 },			\
193 		},							\
194 	}
195 
196 #define PIN_BANK_DRV_FLAGS(id, pins, label, type0, type1, type2, type3) \
197 	{								\
198 		.bank_num	= id,					\
199 		.nr_pins	= pins,					\
200 		.name		= label,				\
201 		.iomux		= {					\
202 			{ .offset = -1 },				\
203 			{ .offset = -1 },				\
204 			{ .offset = -1 },				\
205 			{ .offset = -1 },				\
206 		},							\
207 		.drv		= {					\
208 			{ .drv_type = type0, .offset = -1 },		\
209 			{ .drv_type = type1, .offset = -1 },		\
210 			{ .drv_type = type2, .offset = -1 },		\
211 			{ .drv_type = type3, .offset = -1 },		\
212 		},							\
213 	}
214 
215 #define PIN_BANK_DRV_FLAGS_PULL_FLAGS(id, pins, label, drv0, drv1,	\
216 				      drv2, drv3, pull0, pull1,		\
217 				      pull2, pull3)			\
218 	{								\
219 		.bank_num	= id,					\
220 		.nr_pins	= pins,					\
221 		.name		= label,				\
222 		.iomux		= {					\
223 			{ .offset = -1 },				\
224 			{ .offset = -1 },				\
225 			{ .offset = -1 },				\
226 			{ .offset = -1 },				\
227 		},							\
228 		.drv		= {					\
229 			{ .drv_type = drv0, .offset = -1 },		\
230 			{ .drv_type = drv1, .offset = -1 },		\
231 			{ .drv_type = drv2, .offset = -1 },		\
232 			{ .drv_type = drv3, .offset = -1 },		\
233 		},							\
234 		.pull_type[0] = pull0,					\
235 		.pull_type[1] = pull1,					\
236 		.pull_type[2] = pull2,					\
237 		.pull_type[3] = pull3,					\
238 	}
239 
240 #define PIN_BANK_IOMUX_DRV_FLAGS_OFFSET(id, pins, label, iom0, iom1,	\
241 					iom2, iom3, drv0, drv1, drv2,	\
242 					drv3, offset0, offset1,		\
243 					offset2, offset3)		\
244 	{								\
245 		.bank_num	= id,					\
246 		.nr_pins	= pins,					\
247 		.name		= label,				\
248 		.iomux		= {					\
249 			{ .type = iom0, .offset = -1 },			\
250 			{ .type = iom1, .offset = -1 },			\
251 			{ .type = iom2, .offset = -1 },			\
252 			{ .type = iom3, .offset = -1 },			\
253 		},							\
254 		.drv		= {					\
255 			{ .drv_type = drv0, .offset = offset0 },	\
256 			{ .drv_type = drv1, .offset = offset1 },	\
257 			{ .drv_type = drv2, .offset = offset2 },	\
258 			{ .drv_type = drv3, .offset = offset3 },	\
259 		},							\
260 	}
261 
262 #define PIN_BANK_IOMUX_FLAGS_DRV_FLAGS_OFFSET_PULL_FLAGS(id, pins,	\
263 					      label, iom0, iom1, iom2,  \
264 					      iom3, drv0, drv1, drv2,   \
265 					      drv3, offset0, offset1,   \
266 					      offset2, offset3, pull0,  \
267 					      pull1, pull2, pull3)	\
268 	{								\
269 		.bank_num	= id,					\
270 		.nr_pins	= pins,					\
271 		.name		= label,				\
272 		.iomux		= {					\
273 			{ .type = iom0, .offset = -1 },			\
274 			{ .type = iom1, .offset = -1 },			\
275 			{ .type = iom2, .offset = -1 },			\
276 			{ .type = iom3, .offset = -1 },			\
277 		},							\
278 		.drv		= {					\
279 			{ .drv_type = drv0, .offset = offset0 },	\
280 			{ .drv_type = drv1, .offset = offset1 },	\
281 			{ .drv_type = drv2, .offset = offset2 },	\
282 			{ .drv_type = drv3, .offset = offset3 },	\
283 		},							\
284 		.pull_type[0] = pull0,					\
285 		.pull_type[1] = pull1,					\
286 		.pull_type[2] = pull2,					\
287 		.pull_type[3] = pull3,					\
288 	}
289 
290 /**
291  */
292 struct rockchip_pin_ctrl {
293 	struct rockchip_pin_bank	*pin_banks;
294 	u32				nr_banks;
295 	u32				nr_pins;
296 	char				*label;
297 	enum rockchip_pinctrl_type	type;
298 	int				grf_mux_offset;
299 	int				pmu_mux_offset;
300 	int				grf_drv_offset;
301 	int				pmu_drv_offset;
302 
303 	void	(*pull_calc_reg)(struct rockchip_pin_bank *bank,
304 				    int pin_num, struct regmap **regmap,
305 				    int *reg, u8 *bit);
306 	void	(*drv_calc_reg)(struct rockchip_pin_bank *bank,
307 				    int pin_num, struct regmap **regmap,
308 				    int *reg, u8 *bit);
309 	void	(*iomux_recalc)(u8 bank_num, int pin, int *reg,
310 				u8 *bit, int *mask);
311 	int	(*schmitt_calc_reg)(struct rockchip_pin_bank *bank,
312 				    int pin_num, struct regmap **regmap,
313 				    int *reg, u8 *bit);
314 };
315 
316 struct rockchip_pin_config {
317 	unsigned int		func;
318 	unsigned long		*configs;
319 	unsigned int		nconfigs;
320 };
321 
322 /**
323  * struct rockchip_pin_group: represent group of pins of a pinmux function.
324  * @name: name of the pin group, used to lookup the group.
325  * @pins: the pins included in this group.
326  * @npins: number of pins included in this group.
327  * @func: the mux function number to be programmed when selected.
328  * @configs: the config values to be set for each pin
329  * @nconfigs: number of configs for each pin
330  */
331 struct rockchip_pin_group {
332 	const char			*name;
333 	unsigned int			npins;
334 	unsigned int			*pins;
335 	struct rockchip_pin_config	*data;
336 };
337 
338 /**
339  * struct rockchip_pmx_func: represent a pin function.
340  * @name: name of the pin function, used to lookup the function.
341  * @groups: one or more names of pin groups that provide this function.
342  * @num_groups: number of groups included in @groups.
343  */
344 struct rockchip_pmx_func {
345 	const char		*name;
346 	const char		**groups;
347 	u8			ngroups;
348 };
349 
350 struct rockchip_pinctrl {
351 	struct regmap			*regmap_base;
352 	int				reg_size;
353 	struct regmap			*regmap_pull;
354 	struct regmap			*regmap_pmu;
355 	struct device			*dev;
356 	struct rockchip_pin_ctrl	*ctrl;
357 	struct pinctrl_desc		pctl;
358 	struct pinctrl_dev		*pctl_dev;
359 	struct rockchip_pin_group	*groups;
360 	unsigned int			ngroups;
361 	struct rockchip_pmx_func	*functions;
362 	unsigned int			nfunctions;
363 };
364 
365 /**
366  * struct rockchip_mux_recalced_data: represent a pin iomux data.
367  * @num: bank number.
368  * @pin: pin number.
369  * @bit: index at register.
370  * @reg: register offset.
371  * @mask: mask bit
372  */
373 struct rockchip_mux_recalced_data {
374 	u8 num;
375 	u8 pin;
376 	u8 reg;
377 	u8 bit;
378 	u8 mask;
379 };
380 
381 static struct regmap_config rockchip_regmap_config = {
382 	.reg_bits = 32,
383 	.val_bits = 32,
384 	.reg_stride = 4,
385 };
386 
387 static inline const struct rockchip_pin_group *pinctrl_name_to_group(
388 					const struct rockchip_pinctrl *info,
389 					const char *name)
390 {
391 	int i;
392 
393 	for (i = 0; i < info->ngroups; i++) {
394 		if (!strcmp(info->groups[i].name, name))
395 			return &info->groups[i];
396 	}
397 
398 	return NULL;
399 }
400 
401 /*
402  * given a pin number that is local to a pin controller, find out the pin bank
403  * and the register base of the pin bank.
404  */
405 static struct rockchip_pin_bank *pin_to_bank(struct rockchip_pinctrl *info,
406 								unsigned pin)
407 {
408 	struct rockchip_pin_bank *b = info->ctrl->pin_banks;
409 
410 	while (pin >= (b->pin_base + b->nr_pins))
411 		b++;
412 
413 	return b;
414 }
415 
416 static struct rockchip_pin_bank *bank_num_to_bank(
417 					struct rockchip_pinctrl *info,
418 					unsigned num)
419 {
420 	struct rockchip_pin_bank *b = info->ctrl->pin_banks;
421 	int i;
422 
423 	for (i = 0; i < info->ctrl->nr_banks; i++, b++) {
424 		if (b->bank_num == num)
425 			return b;
426 	}
427 
428 	return ERR_PTR(-EINVAL);
429 }
430 
431 /*
432  * Pinctrl_ops handling
433  */
434 
435 static int rockchip_get_groups_count(struct pinctrl_dev *pctldev)
436 {
437 	struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
438 
439 	return info->ngroups;
440 }
441 
442 static const char *rockchip_get_group_name(struct pinctrl_dev *pctldev,
443 							unsigned selector)
444 {
445 	struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
446 
447 	return info->groups[selector].name;
448 }
449 
450 static int rockchip_get_group_pins(struct pinctrl_dev *pctldev,
451 				      unsigned selector, const unsigned **pins,
452 				      unsigned *npins)
453 {
454 	struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
455 
456 	if (selector >= info->ngroups)
457 		return -EINVAL;
458 
459 	*pins = info->groups[selector].pins;
460 	*npins = info->groups[selector].npins;
461 
462 	return 0;
463 }
464 
465 static int rockchip_dt_node_to_map(struct pinctrl_dev *pctldev,
466 				 struct device_node *np,
467 				 struct pinctrl_map **map, unsigned *num_maps)
468 {
469 	struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
470 	const struct rockchip_pin_group *grp;
471 	struct pinctrl_map *new_map;
472 	struct device_node *parent;
473 	int map_num = 1;
474 	int i;
475 
476 	/*
477 	 * first find the group of this node and check if we need to create
478 	 * config maps for pins
479 	 */
480 	grp = pinctrl_name_to_group(info, np->name);
481 	if (!grp) {
482 		dev_err(info->dev, "unable to find group for node %s\n",
483 			np->name);
484 		return -EINVAL;
485 	}
486 
487 	map_num += grp->npins;
488 	new_map = devm_kzalloc(pctldev->dev, sizeof(*new_map) * map_num,
489 								GFP_KERNEL);
490 	if (!new_map)
491 		return -ENOMEM;
492 
493 	*map = new_map;
494 	*num_maps = map_num;
495 
496 	/* create mux map */
497 	parent = of_get_parent(np);
498 	if (!parent) {
499 		devm_kfree(pctldev->dev, new_map);
500 		return -EINVAL;
501 	}
502 	new_map[0].type = PIN_MAP_TYPE_MUX_GROUP;
503 	new_map[0].data.mux.function = parent->name;
504 	new_map[0].data.mux.group = np->name;
505 	of_node_put(parent);
506 
507 	/* create config map */
508 	new_map++;
509 	for (i = 0; i < grp->npins; i++) {
510 		new_map[i].type = PIN_MAP_TYPE_CONFIGS_PIN;
511 		new_map[i].data.configs.group_or_pin =
512 				pin_get_name(pctldev, grp->pins[i]);
513 		new_map[i].data.configs.configs = grp->data[i].configs;
514 		new_map[i].data.configs.num_configs = grp->data[i].nconfigs;
515 	}
516 
517 	dev_dbg(pctldev->dev, "maps: function %s group %s num %d\n",
518 		(*map)->data.mux.function, (*map)->data.mux.group, map_num);
519 
520 	return 0;
521 }
522 
523 static void rockchip_dt_free_map(struct pinctrl_dev *pctldev,
524 				    struct pinctrl_map *map, unsigned num_maps)
525 {
526 }
527 
528 static const struct pinctrl_ops rockchip_pctrl_ops = {
529 	.get_groups_count	= rockchip_get_groups_count,
530 	.get_group_name		= rockchip_get_group_name,
531 	.get_group_pins		= rockchip_get_group_pins,
532 	.dt_node_to_map		= rockchip_dt_node_to_map,
533 	.dt_free_map		= rockchip_dt_free_map,
534 };
535 
536 /*
537  * Hardware access
538  */
539 
540 static const struct rockchip_mux_recalced_data rk3328_mux_recalced_data[] = {
541 	{
542 		.num = 2,
543 		.pin = 12,
544 		.reg = 0x24,
545 		.bit = 8,
546 		.mask = 0x3
547 	}, {
548 		.num = 2,
549 		.pin = 15,
550 		.reg = 0x28,
551 		.bit = 0,
552 		.mask = 0x7
553 	}, {
554 		.num = 2,
555 		.pin = 23,
556 		.reg = 0x30,
557 		.bit = 14,
558 		.mask = 0x3
559 	},
560 };
561 
562 static void rk3328_recalc_mux(u8 bank_num, int pin, int *reg,
563 			      u8 *bit, int *mask)
564 {
565 	const struct rockchip_mux_recalced_data *data = NULL;
566 	int i;
567 
568 	for (i = 0; i < ARRAY_SIZE(rk3328_mux_recalced_data); i++)
569 		if (rk3328_mux_recalced_data[i].num == bank_num &&
570 		    rk3328_mux_recalced_data[i].pin == pin) {
571 			data = &rk3328_mux_recalced_data[i];
572 			break;
573 		}
574 
575 	if (!data)
576 		return;
577 
578 	*reg = data->reg;
579 	*mask = data->mask;
580 	*bit = data->bit;
581 }
582 
583 static int rockchip_get_mux(struct rockchip_pin_bank *bank, int pin)
584 {
585 	struct rockchip_pinctrl *info = bank->drvdata;
586 	struct rockchip_pin_ctrl *ctrl = info->ctrl;
587 	int iomux_num = (pin / 8);
588 	struct regmap *regmap;
589 	unsigned int val;
590 	int reg, ret, mask, mux_type;
591 	u8 bit;
592 
593 	if (iomux_num > 3)
594 		return -EINVAL;
595 
596 	if (bank->iomux[iomux_num].type & IOMUX_UNROUTED) {
597 		dev_err(info->dev, "pin %d is unrouted\n", pin);
598 		return -EINVAL;
599 	}
600 
601 	if (bank->iomux[iomux_num].type & IOMUX_GPIO_ONLY)
602 		return RK_FUNC_GPIO;
603 
604 	regmap = (bank->iomux[iomux_num].type & IOMUX_SOURCE_PMU)
605 				? info->regmap_pmu : info->regmap_base;
606 
607 	/* get basic quadrupel of mux registers and the correct reg inside */
608 	mux_type = bank->iomux[iomux_num].type;
609 	reg = bank->iomux[iomux_num].offset;
610 	if (mux_type & IOMUX_WIDTH_4BIT) {
611 		if ((pin % 8) >= 4)
612 			reg += 0x4;
613 		bit = (pin % 4) * 4;
614 		mask = 0xf;
615 	} else if (mux_type & IOMUX_WIDTH_3BIT) {
616 		if ((pin % 8) >= 5)
617 			reg += 0x4;
618 		bit = (pin % 8 % 5) * 3;
619 		mask = 0x7;
620 	} else {
621 		bit = (pin % 8) * 2;
622 		mask = 0x3;
623 	}
624 
625 	if (ctrl->iomux_recalc && (mux_type & IOMUX_RECALCED))
626 		ctrl->iomux_recalc(bank->bank_num, pin, &reg, &bit, &mask);
627 
628 	ret = regmap_read(regmap, reg, &val);
629 	if (ret)
630 		return ret;
631 
632 	return ((val >> bit) & mask);
633 }
634 
635 static int rockchip_verify_mux(struct rockchip_pin_bank *bank,
636 			       int pin, int mux)
637 {
638 	struct rockchip_pinctrl *info = bank->drvdata;
639 	int iomux_num = (pin / 8);
640 
641 	if (iomux_num > 3)
642 		return -EINVAL;
643 
644 	if (bank->iomux[iomux_num].type & IOMUX_UNROUTED) {
645 		dev_err(info->dev, "pin %d is unrouted\n", pin);
646 		return -EINVAL;
647 	}
648 
649 	if (bank->iomux[iomux_num].type & IOMUX_GPIO_ONLY) {
650 		if (mux != RK_FUNC_GPIO) {
651 			dev_err(info->dev,
652 				"pin %d only supports a gpio mux\n", pin);
653 			return -ENOTSUPP;
654 		}
655 	}
656 
657 	return 0;
658 }
659 
660 /*
661  * Set a new mux function for a pin.
662  *
663  * The register is divided into the upper and lower 16 bit. When changing
664  * a value, the previous register value is not read and changed. Instead
665  * it seems the changed bits are marked in the upper 16 bit, while the
666  * changed value gets set in the same offset in the lower 16 bit.
667  * All pin settings seem to be 2 bit wide in both the upper and lower
668  * parts.
669  * @bank: pin bank to change
670  * @pin: pin to change
671  * @mux: new mux function to set
672  */
673 static int rockchip_set_mux(struct rockchip_pin_bank *bank, int pin, int mux)
674 {
675 	struct rockchip_pinctrl *info = bank->drvdata;
676 	struct rockchip_pin_ctrl *ctrl = info->ctrl;
677 	int iomux_num = (pin / 8);
678 	struct regmap *regmap;
679 	int reg, ret, mask, mux_type;
680 	u8 bit;
681 	u32 data, rmask;
682 
683 	ret = rockchip_verify_mux(bank, pin, mux);
684 	if (ret < 0)
685 		return ret;
686 
687 	if (bank->iomux[iomux_num].type & IOMUX_GPIO_ONLY)
688 		return 0;
689 
690 	dev_dbg(info->dev, "setting mux of GPIO%d-%d to %d\n",
691 						bank->bank_num, pin, mux);
692 
693 	regmap = (bank->iomux[iomux_num].type & IOMUX_SOURCE_PMU)
694 				? info->regmap_pmu : info->regmap_base;
695 
696 	/* get basic quadrupel of mux registers and the correct reg inside */
697 	mux_type = bank->iomux[iomux_num].type;
698 	reg = bank->iomux[iomux_num].offset;
699 	if (mux_type & IOMUX_WIDTH_4BIT) {
700 		if ((pin % 8) >= 4)
701 			reg += 0x4;
702 		bit = (pin % 4) * 4;
703 		mask = 0xf;
704 	} else if (mux_type & IOMUX_WIDTH_3BIT) {
705 		if ((pin % 8) >= 5)
706 			reg += 0x4;
707 		bit = (pin % 8 % 5) * 3;
708 		mask = 0x7;
709 	} else {
710 		bit = (pin % 8) * 2;
711 		mask = 0x3;
712 	}
713 
714 	if (ctrl->iomux_recalc && (mux_type & IOMUX_RECALCED))
715 		ctrl->iomux_recalc(bank->bank_num, pin, &reg, &bit, &mask);
716 
717 	data = (mask << (bit + 16));
718 	rmask = data | (data >> 16);
719 	data |= (mux & mask) << bit;
720 	ret = regmap_update_bits(regmap, reg, rmask, data);
721 
722 	return ret;
723 }
724 
725 #define RV1108_PULL_PMU_OFFSET		0x10
726 #define RV1108_PULL_OFFSET		0x110
727 #define RV1108_PULL_PINS_PER_REG	8
728 #define RV1108_PULL_BITS_PER_PIN	2
729 #define RV1108_PULL_BANK_STRIDE		16
730 
731 static void rv1108_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank,
732 					 int pin_num, struct regmap **regmap,
733 					 int *reg, u8 *bit)
734 {
735 	struct rockchip_pinctrl *info = bank->drvdata;
736 
737 	/* The first 24 pins of the first bank are located in PMU */
738 	if (bank->bank_num == 0) {
739 		*regmap = info->regmap_pmu;
740 		*reg = RV1108_PULL_PMU_OFFSET;
741 	} else {
742 		*reg = RV1108_PULL_OFFSET;
743 		*regmap = info->regmap_base;
744 		/* correct the offset, as we're starting with the 2nd bank */
745 		*reg -= 0x10;
746 		*reg += bank->bank_num * RV1108_PULL_BANK_STRIDE;
747 	}
748 
749 	*reg += ((pin_num / RV1108_PULL_PINS_PER_REG) * 4);
750 	*bit = (pin_num % RV1108_PULL_PINS_PER_REG);
751 	*bit *= RV1108_PULL_BITS_PER_PIN;
752 }
753 
754 #define RV1108_DRV_PMU_OFFSET		0x20
755 #define RV1108_DRV_GRF_OFFSET		0x210
756 #define RV1108_DRV_BITS_PER_PIN		2
757 #define RV1108_DRV_PINS_PER_REG		8
758 #define RV1108_DRV_BANK_STRIDE		16
759 
760 static void rv1108_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank,
761 					int pin_num, struct regmap **regmap,
762 					int *reg, u8 *bit)
763 {
764 	struct rockchip_pinctrl *info = bank->drvdata;
765 
766 	/* The first 24 pins of the first bank are located in PMU */
767 	if (bank->bank_num == 0) {
768 		*regmap = info->regmap_pmu;
769 		*reg = RV1108_DRV_PMU_OFFSET;
770 	} else {
771 		*regmap = info->regmap_base;
772 		*reg = RV1108_DRV_GRF_OFFSET;
773 
774 		/* correct the offset, as we're starting with the 2nd bank */
775 		*reg -= 0x10;
776 		*reg += bank->bank_num * RV1108_DRV_BANK_STRIDE;
777 	}
778 
779 	*reg += ((pin_num / RV1108_DRV_PINS_PER_REG) * 4);
780 	*bit = pin_num % RV1108_DRV_PINS_PER_REG;
781 	*bit *= RV1108_DRV_BITS_PER_PIN;
782 }
783 
784 #define RK2928_PULL_OFFSET		0x118
785 #define RK2928_PULL_PINS_PER_REG	16
786 #define RK2928_PULL_BANK_STRIDE		8
787 
788 static void rk2928_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank,
789 				    int pin_num, struct regmap **regmap,
790 				    int *reg, u8 *bit)
791 {
792 	struct rockchip_pinctrl *info = bank->drvdata;
793 
794 	*regmap = info->regmap_base;
795 	*reg = RK2928_PULL_OFFSET;
796 	*reg += bank->bank_num * RK2928_PULL_BANK_STRIDE;
797 	*reg += (pin_num / RK2928_PULL_PINS_PER_REG) * 4;
798 
799 	*bit = pin_num % RK2928_PULL_PINS_PER_REG;
800 };
801 
802 #define RK3188_PULL_OFFSET		0x164
803 #define RK3188_PULL_BITS_PER_PIN	2
804 #define RK3188_PULL_PINS_PER_REG	8
805 #define RK3188_PULL_BANK_STRIDE		16
806 #define RK3188_PULL_PMU_OFFSET		0x64
807 
808 static void rk3188_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank,
809 				    int pin_num, struct regmap **regmap,
810 				    int *reg, u8 *bit)
811 {
812 	struct rockchip_pinctrl *info = bank->drvdata;
813 
814 	/* The first 12 pins of the first bank are located elsewhere */
815 	if (bank->bank_num == 0 && pin_num < 12) {
816 		*regmap = info->regmap_pmu ? info->regmap_pmu
817 					   : bank->regmap_pull;
818 		*reg = info->regmap_pmu ? RK3188_PULL_PMU_OFFSET : 0;
819 		*reg += ((pin_num / RK3188_PULL_PINS_PER_REG) * 4);
820 		*bit = pin_num % RK3188_PULL_PINS_PER_REG;
821 		*bit *= RK3188_PULL_BITS_PER_PIN;
822 	} else {
823 		*regmap = info->regmap_pull ? info->regmap_pull
824 					    : info->regmap_base;
825 		*reg = info->regmap_pull ? 0 : RK3188_PULL_OFFSET;
826 
827 		/* correct the offset, as it is the 2nd pull register */
828 		*reg -= 4;
829 		*reg += bank->bank_num * RK3188_PULL_BANK_STRIDE;
830 		*reg += ((pin_num / RK3188_PULL_PINS_PER_REG) * 4);
831 
832 		/*
833 		 * The bits in these registers have an inverse ordering
834 		 * with the lowest pin being in bits 15:14 and the highest
835 		 * pin in bits 1:0
836 		 */
837 		*bit = 7 - (pin_num % RK3188_PULL_PINS_PER_REG);
838 		*bit *= RK3188_PULL_BITS_PER_PIN;
839 	}
840 }
841 
842 #define RK3288_PULL_OFFSET		0x140
843 static void rk3288_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank,
844 				    int pin_num, struct regmap **regmap,
845 				    int *reg, u8 *bit)
846 {
847 	struct rockchip_pinctrl *info = bank->drvdata;
848 
849 	/* The first 24 pins of the first bank are located in PMU */
850 	if (bank->bank_num == 0) {
851 		*regmap = info->regmap_pmu;
852 		*reg = RK3188_PULL_PMU_OFFSET;
853 
854 		*reg += ((pin_num / RK3188_PULL_PINS_PER_REG) * 4);
855 		*bit = pin_num % RK3188_PULL_PINS_PER_REG;
856 		*bit *= RK3188_PULL_BITS_PER_PIN;
857 	} else {
858 		*regmap = info->regmap_base;
859 		*reg = RK3288_PULL_OFFSET;
860 
861 		/* correct the offset, as we're starting with the 2nd bank */
862 		*reg -= 0x10;
863 		*reg += bank->bank_num * RK3188_PULL_BANK_STRIDE;
864 		*reg += ((pin_num / RK3188_PULL_PINS_PER_REG) * 4);
865 
866 		*bit = (pin_num % RK3188_PULL_PINS_PER_REG);
867 		*bit *= RK3188_PULL_BITS_PER_PIN;
868 	}
869 }
870 
871 #define RK3288_DRV_PMU_OFFSET		0x70
872 #define RK3288_DRV_GRF_OFFSET		0x1c0
873 #define RK3288_DRV_BITS_PER_PIN		2
874 #define RK3288_DRV_PINS_PER_REG		8
875 #define RK3288_DRV_BANK_STRIDE		16
876 
877 static void rk3288_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank,
878 				    int pin_num, struct regmap **regmap,
879 				    int *reg, u8 *bit)
880 {
881 	struct rockchip_pinctrl *info = bank->drvdata;
882 
883 	/* The first 24 pins of the first bank are located in PMU */
884 	if (bank->bank_num == 0) {
885 		*regmap = info->regmap_pmu;
886 		*reg = RK3288_DRV_PMU_OFFSET;
887 
888 		*reg += ((pin_num / RK3288_DRV_PINS_PER_REG) * 4);
889 		*bit = pin_num % RK3288_DRV_PINS_PER_REG;
890 		*bit *= RK3288_DRV_BITS_PER_PIN;
891 	} else {
892 		*regmap = info->regmap_base;
893 		*reg = RK3288_DRV_GRF_OFFSET;
894 
895 		/* correct the offset, as we're starting with the 2nd bank */
896 		*reg -= 0x10;
897 		*reg += bank->bank_num * RK3288_DRV_BANK_STRIDE;
898 		*reg += ((pin_num / RK3288_DRV_PINS_PER_REG) * 4);
899 
900 		*bit = (pin_num % RK3288_DRV_PINS_PER_REG);
901 		*bit *= RK3288_DRV_BITS_PER_PIN;
902 	}
903 }
904 
905 #define RK3228_PULL_OFFSET		0x100
906 
907 static void rk3228_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank,
908 				    int pin_num, struct regmap **regmap,
909 				    int *reg, u8 *bit)
910 {
911 	struct rockchip_pinctrl *info = bank->drvdata;
912 
913 	*regmap = info->regmap_base;
914 	*reg = RK3228_PULL_OFFSET;
915 	*reg += bank->bank_num * RK3188_PULL_BANK_STRIDE;
916 	*reg += ((pin_num / RK3188_PULL_PINS_PER_REG) * 4);
917 
918 	*bit = (pin_num % RK3188_PULL_PINS_PER_REG);
919 	*bit *= RK3188_PULL_BITS_PER_PIN;
920 }
921 
922 #define RK3228_DRV_GRF_OFFSET		0x200
923 
924 static void rk3228_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank,
925 				    int pin_num, struct regmap **regmap,
926 				    int *reg, u8 *bit)
927 {
928 	struct rockchip_pinctrl *info = bank->drvdata;
929 
930 	*regmap = info->regmap_base;
931 	*reg = RK3228_DRV_GRF_OFFSET;
932 	*reg += bank->bank_num * RK3288_DRV_BANK_STRIDE;
933 	*reg += ((pin_num / RK3288_DRV_PINS_PER_REG) * 4);
934 
935 	*bit = (pin_num % RK3288_DRV_PINS_PER_REG);
936 	*bit *= RK3288_DRV_BITS_PER_PIN;
937 }
938 
939 #define RK3368_PULL_GRF_OFFSET		0x100
940 #define RK3368_PULL_PMU_OFFSET		0x10
941 
942 static void rk3368_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank,
943 				    int pin_num, struct regmap **regmap,
944 				    int *reg, u8 *bit)
945 {
946 	struct rockchip_pinctrl *info = bank->drvdata;
947 
948 	/* The first 32 pins of the first bank are located in PMU */
949 	if (bank->bank_num == 0) {
950 		*regmap = info->regmap_pmu;
951 		*reg = RK3368_PULL_PMU_OFFSET;
952 
953 		*reg += ((pin_num / RK3188_PULL_PINS_PER_REG) * 4);
954 		*bit = pin_num % RK3188_PULL_PINS_PER_REG;
955 		*bit *= RK3188_PULL_BITS_PER_PIN;
956 	} else {
957 		*regmap = info->regmap_base;
958 		*reg = RK3368_PULL_GRF_OFFSET;
959 
960 		/* correct the offset, as we're starting with the 2nd bank */
961 		*reg -= 0x10;
962 		*reg += bank->bank_num * RK3188_PULL_BANK_STRIDE;
963 		*reg += ((pin_num / RK3188_PULL_PINS_PER_REG) * 4);
964 
965 		*bit = (pin_num % RK3188_PULL_PINS_PER_REG);
966 		*bit *= RK3188_PULL_BITS_PER_PIN;
967 	}
968 }
969 
970 #define RK3368_DRV_PMU_OFFSET		0x20
971 #define RK3368_DRV_GRF_OFFSET		0x200
972 
973 static void rk3368_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank,
974 				    int pin_num, struct regmap **regmap,
975 				    int *reg, u8 *bit)
976 {
977 	struct rockchip_pinctrl *info = bank->drvdata;
978 
979 	/* The first 32 pins of the first bank are located in PMU */
980 	if (bank->bank_num == 0) {
981 		*regmap = info->regmap_pmu;
982 		*reg = RK3368_DRV_PMU_OFFSET;
983 
984 		*reg += ((pin_num / RK3288_DRV_PINS_PER_REG) * 4);
985 		*bit = pin_num % RK3288_DRV_PINS_PER_REG;
986 		*bit *= RK3288_DRV_BITS_PER_PIN;
987 	} else {
988 		*regmap = info->regmap_base;
989 		*reg = RK3368_DRV_GRF_OFFSET;
990 
991 		/* correct the offset, as we're starting with the 2nd bank */
992 		*reg -= 0x10;
993 		*reg += bank->bank_num * RK3288_DRV_BANK_STRIDE;
994 		*reg += ((pin_num / RK3288_DRV_PINS_PER_REG) * 4);
995 
996 		*bit = (pin_num % RK3288_DRV_PINS_PER_REG);
997 		*bit *= RK3288_DRV_BITS_PER_PIN;
998 	}
999 }
1000 
1001 #define RK3399_PULL_GRF_OFFSET		0xe040
1002 #define RK3399_PULL_PMU_OFFSET		0x40
1003 #define RK3399_DRV_3BITS_PER_PIN	3
1004 
1005 static void rk3399_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank,
1006 					 int pin_num, struct regmap **regmap,
1007 					 int *reg, u8 *bit)
1008 {
1009 	struct rockchip_pinctrl *info = bank->drvdata;
1010 
1011 	/* The bank0:16 and bank1:32 pins are located in PMU */
1012 	if ((bank->bank_num == 0) || (bank->bank_num == 1)) {
1013 		*regmap = info->regmap_pmu;
1014 		*reg = RK3399_PULL_PMU_OFFSET;
1015 
1016 		*reg += bank->bank_num * RK3188_PULL_BANK_STRIDE;
1017 
1018 		*reg += ((pin_num / RK3188_PULL_PINS_PER_REG) * 4);
1019 		*bit = pin_num % RK3188_PULL_PINS_PER_REG;
1020 		*bit *= RK3188_PULL_BITS_PER_PIN;
1021 	} else {
1022 		*regmap = info->regmap_base;
1023 		*reg = RK3399_PULL_GRF_OFFSET;
1024 
1025 		/* correct the offset, as we're starting with the 3rd bank */
1026 		*reg -= 0x20;
1027 		*reg += bank->bank_num * RK3188_PULL_BANK_STRIDE;
1028 		*reg += ((pin_num / RK3188_PULL_PINS_PER_REG) * 4);
1029 
1030 		*bit = (pin_num % RK3188_PULL_PINS_PER_REG);
1031 		*bit *= RK3188_PULL_BITS_PER_PIN;
1032 	}
1033 }
1034 
1035 static void rk3399_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank,
1036 					int pin_num, struct regmap **regmap,
1037 					int *reg, u8 *bit)
1038 {
1039 	struct rockchip_pinctrl *info = bank->drvdata;
1040 	int drv_num = (pin_num / 8);
1041 
1042 	/*  The bank0:16 and bank1:32 pins are located in PMU */
1043 	if ((bank->bank_num == 0) || (bank->bank_num == 1))
1044 		*regmap = info->regmap_pmu;
1045 	else
1046 		*regmap = info->regmap_base;
1047 
1048 	*reg = bank->drv[drv_num].offset;
1049 	if ((bank->drv[drv_num].drv_type == DRV_TYPE_IO_1V8_3V0_AUTO) ||
1050 	    (bank->drv[drv_num].drv_type == DRV_TYPE_IO_3V3_ONLY))
1051 		*bit = (pin_num % 8) * 3;
1052 	else
1053 		*bit = (pin_num % 8) * 2;
1054 }
1055 
1056 static int rockchip_perpin_drv_list[DRV_TYPE_MAX][8] = {
1057 	{ 2, 4, 8, 12, -1, -1, -1, -1 },
1058 	{ 3, 6, 9, 12, -1, -1, -1, -1 },
1059 	{ 5, 10, 15, 20, -1, -1, -1, -1 },
1060 	{ 4, 6, 8, 10, 12, 14, 16, 18 },
1061 	{ 4, 7, 10, 13, 16, 19, 22, 26 }
1062 };
1063 
1064 static int rockchip_get_drive_perpin(struct rockchip_pin_bank *bank,
1065 				     int pin_num)
1066 {
1067 	struct rockchip_pinctrl *info = bank->drvdata;
1068 	struct rockchip_pin_ctrl *ctrl = info->ctrl;
1069 	struct regmap *regmap;
1070 	int reg, ret;
1071 	u32 data, temp, rmask_bits;
1072 	u8 bit;
1073 	int drv_type = bank->drv[pin_num / 8].drv_type;
1074 
1075 	ctrl->drv_calc_reg(bank, pin_num, &regmap, &reg, &bit);
1076 
1077 	switch (drv_type) {
1078 	case DRV_TYPE_IO_1V8_3V0_AUTO:
1079 	case DRV_TYPE_IO_3V3_ONLY:
1080 		rmask_bits = RK3399_DRV_3BITS_PER_PIN;
1081 		switch (bit) {
1082 		case 0 ... 12:
1083 			/* regular case, nothing to do */
1084 			break;
1085 		case 15:
1086 			/*
1087 			 * drive-strength offset is special, as it is
1088 			 * spread over 2 registers
1089 			 */
1090 			ret = regmap_read(regmap, reg, &data);
1091 			if (ret)
1092 				return ret;
1093 
1094 			ret = regmap_read(regmap, reg + 0x4, &temp);
1095 			if (ret)
1096 				return ret;
1097 
1098 			/*
1099 			 * the bit data[15] contains bit 0 of the value
1100 			 * while temp[1:0] contains bits 2 and 1
1101 			 */
1102 			data >>= 15;
1103 			temp &= 0x3;
1104 			temp <<= 1;
1105 			data |= temp;
1106 
1107 			return rockchip_perpin_drv_list[drv_type][data];
1108 		case 18 ... 21:
1109 			/* setting fully enclosed in the second register */
1110 			reg += 4;
1111 			bit -= 16;
1112 			break;
1113 		default:
1114 			dev_err(info->dev, "unsupported bit: %d for pinctrl drive type: %d\n",
1115 				bit, drv_type);
1116 			return -EINVAL;
1117 		}
1118 
1119 		break;
1120 	case DRV_TYPE_IO_DEFAULT:
1121 	case DRV_TYPE_IO_1V8_OR_3V0:
1122 	case DRV_TYPE_IO_1V8_ONLY:
1123 		rmask_bits = RK3288_DRV_BITS_PER_PIN;
1124 		break;
1125 	default:
1126 		dev_err(info->dev, "unsupported pinctrl drive type: %d\n",
1127 			drv_type);
1128 		return -EINVAL;
1129 	}
1130 
1131 	ret = regmap_read(regmap, reg, &data);
1132 	if (ret)
1133 		return ret;
1134 
1135 	data >>= bit;
1136 	data &= (1 << rmask_bits) - 1;
1137 
1138 	return rockchip_perpin_drv_list[drv_type][data];
1139 }
1140 
1141 static int rockchip_set_drive_perpin(struct rockchip_pin_bank *bank,
1142 				     int pin_num, int strength)
1143 {
1144 	struct rockchip_pinctrl *info = bank->drvdata;
1145 	struct rockchip_pin_ctrl *ctrl = info->ctrl;
1146 	struct regmap *regmap;
1147 	int reg, ret, i;
1148 	u32 data, rmask, rmask_bits, temp;
1149 	u8 bit;
1150 	int drv_type = bank->drv[pin_num / 8].drv_type;
1151 
1152 	dev_dbg(info->dev, "setting drive of GPIO%d-%d to %d\n",
1153 		bank->bank_num, pin_num, strength);
1154 
1155 	ctrl->drv_calc_reg(bank, pin_num, &regmap, &reg, &bit);
1156 
1157 	ret = -EINVAL;
1158 	for (i = 0; i < ARRAY_SIZE(rockchip_perpin_drv_list[drv_type]); i++) {
1159 		if (rockchip_perpin_drv_list[drv_type][i] == strength) {
1160 			ret = i;
1161 			break;
1162 		} else if (rockchip_perpin_drv_list[drv_type][i] < 0) {
1163 			ret = rockchip_perpin_drv_list[drv_type][i];
1164 			break;
1165 		}
1166 	}
1167 
1168 	if (ret < 0) {
1169 		dev_err(info->dev, "unsupported driver strength %d\n",
1170 			strength);
1171 		return ret;
1172 	}
1173 
1174 	switch (drv_type) {
1175 	case DRV_TYPE_IO_1V8_3V0_AUTO:
1176 	case DRV_TYPE_IO_3V3_ONLY:
1177 		rmask_bits = RK3399_DRV_3BITS_PER_PIN;
1178 		switch (bit) {
1179 		case 0 ... 12:
1180 			/* regular case, nothing to do */
1181 			break;
1182 		case 15:
1183 			/*
1184 			 * drive-strength offset is special, as it is spread
1185 			 * over 2 registers, the bit data[15] contains bit 0
1186 			 * of the value while temp[1:0] contains bits 2 and 1
1187 			 */
1188 			data = (ret & 0x1) << 15;
1189 			temp = (ret >> 0x1) & 0x3;
1190 
1191 			rmask = BIT(15) | BIT(31);
1192 			data |= BIT(31);
1193 			ret = regmap_update_bits(regmap, reg, rmask, data);
1194 			if (ret)
1195 				return ret;
1196 
1197 			rmask = 0x3 | (0x3 << 16);
1198 			temp |= (0x3 << 16);
1199 			reg += 0x4;
1200 			ret = regmap_update_bits(regmap, reg, rmask, temp);
1201 
1202 			return ret;
1203 		case 18 ... 21:
1204 			/* setting fully enclosed in the second register */
1205 			reg += 4;
1206 			bit -= 16;
1207 			break;
1208 		default:
1209 			dev_err(info->dev, "unsupported bit: %d for pinctrl drive type: %d\n",
1210 				bit, drv_type);
1211 			return -EINVAL;
1212 		}
1213 		break;
1214 	case DRV_TYPE_IO_DEFAULT:
1215 	case DRV_TYPE_IO_1V8_OR_3V0:
1216 	case DRV_TYPE_IO_1V8_ONLY:
1217 		rmask_bits = RK3288_DRV_BITS_PER_PIN;
1218 		break;
1219 	default:
1220 		dev_err(info->dev, "unsupported pinctrl drive type: %d\n",
1221 			drv_type);
1222 		return -EINVAL;
1223 	}
1224 
1225 	/* enable the write to the equivalent lower bits */
1226 	data = ((1 << rmask_bits) - 1) << (bit + 16);
1227 	rmask = data | (data >> 16);
1228 	data |= (ret << bit);
1229 
1230 	ret = regmap_update_bits(regmap, reg, rmask, data);
1231 
1232 	return ret;
1233 }
1234 
1235 static int rockchip_pull_list[PULL_TYPE_MAX][4] = {
1236 	{
1237 		PIN_CONFIG_BIAS_DISABLE,
1238 		PIN_CONFIG_BIAS_PULL_UP,
1239 		PIN_CONFIG_BIAS_PULL_DOWN,
1240 		PIN_CONFIG_BIAS_BUS_HOLD
1241 	},
1242 	{
1243 		PIN_CONFIG_BIAS_DISABLE,
1244 		PIN_CONFIG_BIAS_PULL_DOWN,
1245 		PIN_CONFIG_BIAS_DISABLE,
1246 		PIN_CONFIG_BIAS_PULL_UP
1247 	},
1248 };
1249 
1250 static int rockchip_get_pull(struct rockchip_pin_bank *bank, int pin_num)
1251 {
1252 	struct rockchip_pinctrl *info = bank->drvdata;
1253 	struct rockchip_pin_ctrl *ctrl = info->ctrl;
1254 	struct regmap *regmap;
1255 	int reg, ret, pull_type;
1256 	u8 bit;
1257 	u32 data;
1258 
1259 	/* rk3066b does support any pulls */
1260 	if (ctrl->type == RK3066B)
1261 		return PIN_CONFIG_BIAS_DISABLE;
1262 
1263 	ctrl->pull_calc_reg(bank, pin_num, &regmap, &reg, &bit);
1264 
1265 	ret = regmap_read(regmap, reg, &data);
1266 	if (ret)
1267 		return ret;
1268 
1269 	switch (ctrl->type) {
1270 	case RK2928:
1271 		return !(data & BIT(bit))
1272 				? PIN_CONFIG_BIAS_PULL_PIN_DEFAULT
1273 				: PIN_CONFIG_BIAS_DISABLE;
1274 	case RV1108:
1275 	case RK3188:
1276 	case RK3288:
1277 	case RK3368:
1278 	case RK3399:
1279 		pull_type = bank->pull_type[pin_num / 8];
1280 		data >>= bit;
1281 		data &= (1 << RK3188_PULL_BITS_PER_PIN) - 1;
1282 
1283 		return rockchip_pull_list[pull_type][data];
1284 	default:
1285 		dev_err(info->dev, "unsupported pinctrl type\n");
1286 		return -EINVAL;
1287 	};
1288 }
1289 
1290 static int rockchip_set_pull(struct rockchip_pin_bank *bank,
1291 					int pin_num, int pull)
1292 {
1293 	struct rockchip_pinctrl *info = bank->drvdata;
1294 	struct rockchip_pin_ctrl *ctrl = info->ctrl;
1295 	struct regmap *regmap;
1296 	int reg, ret, i, pull_type;
1297 	u8 bit;
1298 	u32 data, rmask;
1299 
1300 	dev_dbg(info->dev, "setting pull of GPIO%d-%d to %d\n",
1301 		 bank->bank_num, pin_num, pull);
1302 
1303 	/* rk3066b does support any pulls */
1304 	if (ctrl->type == RK3066B)
1305 		return pull ? -EINVAL : 0;
1306 
1307 	ctrl->pull_calc_reg(bank, pin_num, &regmap, &reg, &bit);
1308 
1309 	switch (ctrl->type) {
1310 	case RK2928:
1311 		data = BIT(bit + 16);
1312 		if (pull == PIN_CONFIG_BIAS_DISABLE)
1313 			data |= BIT(bit);
1314 		ret = regmap_write(regmap, reg, data);
1315 		break;
1316 	case RV1108:
1317 	case RK3188:
1318 	case RK3288:
1319 	case RK3368:
1320 	case RK3399:
1321 		pull_type = bank->pull_type[pin_num / 8];
1322 		ret = -EINVAL;
1323 		for (i = 0; i < ARRAY_SIZE(rockchip_pull_list[pull_type]);
1324 			i++) {
1325 			if (rockchip_pull_list[pull_type][i] == pull) {
1326 				ret = i;
1327 				break;
1328 			}
1329 		}
1330 
1331 		if (ret < 0) {
1332 			dev_err(info->dev, "unsupported pull setting %d\n",
1333 				pull);
1334 			return ret;
1335 		}
1336 
1337 		/* enable the write to the equivalent lower bits */
1338 		data = ((1 << RK3188_PULL_BITS_PER_PIN) - 1) << (bit + 16);
1339 		rmask = data | (data >> 16);
1340 		data |= (ret << bit);
1341 
1342 		ret = regmap_update_bits(regmap, reg, rmask, data);
1343 		break;
1344 	default:
1345 		dev_err(info->dev, "unsupported pinctrl type\n");
1346 		return -EINVAL;
1347 	}
1348 
1349 	return ret;
1350 }
1351 
1352 #define RK3328_SCHMITT_BITS_PER_PIN		1
1353 #define RK3328_SCHMITT_PINS_PER_REG		16
1354 #define RK3328_SCHMITT_BANK_STRIDE		8
1355 #define RK3328_SCHMITT_GRF_OFFSET		0x380
1356 
1357 static int rk3328_calc_schmitt_reg_and_bit(struct rockchip_pin_bank *bank,
1358 					   int pin_num,
1359 					   struct regmap **regmap,
1360 					   int *reg, u8 *bit)
1361 {
1362 	struct rockchip_pinctrl *info = bank->drvdata;
1363 
1364 	*regmap = info->regmap_base;
1365 	*reg = RK3328_SCHMITT_GRF_OFFSET;
1366 
1367 	*reg += bank->bank_num * RK3328_SCHMITT_BANK_STRIDE;
1368 	*reg += ((pin_num / RK3328_SCHMITT_PINS_PER_REG) * 4);
1369 	*bit = pin_num % RK3328_SCHMITT_PINS_PER_REG;
1370 
1371 	return 0;
1372 }
1373 
1374 static int rockchip_get_schmitt(struct rockchip_pin_bank *bank, int pin_num)
1375 {
1376 	struct rockchip_pinctrl *info = bank->drvdata;
1377 	struct rockchip_pin_ctrl *ctrl = info->ctrl;
1378 	struct regmap *regmap;
1379 	int reg, ret;
1380 	u8 bit;
1381 	u32 data;
1382 
1383 	ret = ctrl->schmitt_calc_reg(bank, pin_num, &regmap, &reg, &bit);
1384 	if (ret)
1385 		return ret;
1386 
1387 	ret = regmap_read(regmap, reg, &data);
1388 	if (ret)
1389 		return ret;
1390 
1391 	data >>= bit;
1392 	return data & 0x1;
1393 }
1394 
1395 static int rockchip_set_schmitt(struct rockchip_pin_bank *bank,
1396 				int pin_num, int enable)
1397 {
1398 	struct rockchip_pinctrl *info = bank->drvdata;
1399 	struct rockchip_pin_ctrl *ctrl = info->ctrl;
1400 	struct regmap *regmap;
1401 	int reg, ret;
1402 	u8 bit;
1403 	u32 data, rmask;
1404 
1405 	dev_dbg(info->dev, "setting input schmitt of GPIO%d-%d to %d\n",
1406 		bank->bank_num, pin_num, enable);
1407 
1408 	ret = ctrl->schmitt_calc_reg(bank, pin_num, &regmap, &reg, &bit);
1409 	if (ret)
1410 		return ret;
1411 
1412 	/* enable the write to the equivalent lower bits */
1413 	data = BIT(bit + 16) | (enable << bit);
1414 	rmask = BIT(bit + 16) | BIT(bit);
1415 
1416 	return regmap_update_bits(regmap, reg, rmask, data);
1417 }
1418 
1419 /*
1420  * Pinmux_ops handling
1421  */
1422 
1423 static int rockchip_pmx_get_funcs_count(struct pinctrl_dev *pctldev)
1424 {
1425 	struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
1426 
1427 	return info->nfunctions;
1428 }
1429 
1430 static const char *rockchip_pmx_get_func_name(struct pinctrl_dev *pctldev,
1431 					  unsigned selector)
1432 {
1433 	struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
1434 
1435 	return info->functions[selector].name;
1436 }
1437 
1438 static int rockchip_pmx_get_groups(struct pinctrl_dev *pctldev,
1439 				unsigned selector, const char * const **groups,
1440 				unsigned * const num_groups)
1441 {
1442 	struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
1443 
1444 	*groups = info->functions[selector].groups;
1445 	*num_groups = info->functions[selector].ngroups;
1446 
1447 	return 0;
1448 }
1449 
1450 static int rockchip_pmx_set(struct pinctrl_dev *pctldev, unsigned selector,
1451 			    unsigned group)
1452 {
1453 	struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
1454 	const unsigned int *pins = info->groups[group].pins;
1455 	const struct rockchip_pin_config *data = info->groups[group].data;
1456 	struct rockchip_pin_bank *bank;
1457 	int cnt, ret = 0;
1458 
1459 	dev_dbg(info->dev, "enable function %s group %s\n",
1460 		info->functions[selector].name, info->groups[group].name);
1461 
1462 	/*
1463 	 * for each pin in the pin group selected, program the correspoding pin
1464 	 * pin function number in the config register.
1465 	 */
1466 	for (cnt = 0; cnt < info->groups[group].npins; cnt++) {
1467 		bank = pin_to_bank(info, pins[cnt]);
1468 		ret = rockchip_set_mux(bank, pins[cnt] - bank->pin_base,
1469 				       data[cnt].func);
1470 		if (ret)
1471 			break;
1472 	}
1473 
1474 	if (ret) {
1475 		/* revert the already done pin settings */
1476 		for (cnt--; cnt >= 0; cnt--)
1477 			rockchip_set_mux(bank, pins[cnt] - bank->pin_base, 0);
1478 
1479 		return ret;
1480 	}
1481 
1482 	return 0;
1483 }
1484 
1485 static int rockchip_gpio_get_direction(struct gpio_chip *chip, unsigned offset)
1486 {
1487 	struct rockchip_pin_bank *bank = gpiochip_get_data(chip);
1488 	u32 data;
1489 
1490 	data = readl_relaxed(bank->reg_base + GPIO_SWPORT_DDR);
1491 
1492 	return !(data & BIT(offset));
1493 }
1494 
1495 /*
1496  * The calls to gpio_direction_output() and gpio_direction_input()
1497  * leads to this function call (via the pinctrl_gpio_direction_{input|output}()
1498  * function called from the gpiolib interface).
1499  */
1500 static int _rockchip_pmx_gpio_set_direction(struct gpio_chip *chip,
1501 					    int pin, bool input)
1502 {
1503 	struct rockchip_pin_bank *bank;
1504 	int ret;
1505 	unsigned long flags;
1506 	u32 data;
1507 
1508 	bank = gpiochip_get_data(chip);
1509 
1510 	ret = rockchip_set_mux(bank, pin, RK_FUNC_GPIO);
1511 	if (ret < 0)
1512 		return ret;
1513 
1514 	clk_enable(bank->clk);
1515 	raw_spin_lock_irqsave(&bank->slock, flags);
1516 
1517 	data = readl_relaxed(bank->reg_base + GPIO_SWPORT_DDR);
1518 	/* set bit to 1 for output, 0 for input */
1519 	if (!input)
1520 		data |= BIT(pin);
1521 	else
1522 		data &= ~BIT(pin);
1523 	writel_relaxed(data, bank->reg_base + GPIO_SWPORT_DDR);
1524 
1525 	raw_spin_unlock_irqrestore(&bank->slock, flags);
1526 	clk_disable(bank->clk);
1527 
1528 	return 0;
1529 }
1530 
1531 static int rockchip_pmx_gpio_set_direction(struct pinctrl_dev *pctldev,
1532 					      struct pinctrl_gpio_range *range,
1533 					      unsigned offset, bool input)
1534 {
1535 	struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
1536 	struct gpio_chip *chip;
1537 	int pin;
1538 
1539 	chip = range->gc;
1540 	pin = offset - chip->base;
1541 	dev_dbg(info->dev, "gpio_direction for pin %u as %s-%d to %s\n",
1542 		 offset, range->name, pin, input ? "input" : "output");
1543 
1544 	return _rockchip_pmx_gpio_set_direction(chip, offset - chip->base,
1545 						input);
1546 }
1547 
1548 static const struct pinmux_ops rockchip_pmx_ops = {
1549 	.get_functions_count	= rockchip_pmx_get_funcs_count,
1550 	.get_function_name	= rockchip_pmx_get_func_name,
1551 	.get_function_groups	= rockchip_pmx_get_groups,
1552 	.set_mux		= rockchip_pmx_set,
1553 	.gpio_set_direction	= rockchip_pmx_gpio_set_direction,
1554 };
1555 
1556 /*
1557  * Pinconf_ops handling
1558  */
1559 
1560 static bool rockchip_pinconf_pull_valid(struct rockchip_pin_ctrl *ctrl,
1561 					enum pin_config_param pull)
1562 {
1563 	switch (ctrl->type) {
1564 	case RK2928:
1565 		return (pull == PIN_CONFIG_BIAS_PULL_PIN_DEFAULT ||
1566 					pull == PIN_CONFIG_BIAS_DISABLE);
1567 	case RK3066B:
1568 		return pull ? false : true;
1569 	case RV1108:
1570 	case RK3188:
1571 	case RK3288:
1572 	case RK3368:
1573 	case RK3399:
1574 		return (pull != PIN_CONFIG_BIAS_PULL_PIN_DEFAULT);
1575 	}
1576 
1577 	return false;
1578 }
1579 
1580 static void rockchip_gpio_set(struct gpio_chip *gc, unsigned offset, int value);
1581 static int rockchip_gpio_get(struct gpio_chip *gc, unsigned offset);
1582 
1583 /* set the pin config settings for a specified pin */
1584 static int rockchip_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin,
1585 				unsigned long *configs, unsigned num_configs)
1586 {
1587 	struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
1588 	struct rockchip_pin_bank *bank = pin_to_bank(info, pin);
1589 	enum pin_config_param param;
1590 	u32 arg;
1591 	int i;
1592 	int rc;
1593 
1594 	for (i = 0; i < num_configs; i++) {
1595 		param = pinconf_to_config_param(configs[i]);
1596 		arg = pinconf_to_config_argument(configs[i]);
1597 
1598 		switch (param) {
1599 		case PIN_CONFIG_BIAS_DISABLE:
1600 			rc =  rockchip_set_pull(bank, pin - bank->pin_base,
1601 				param);
1602 			if (rc)
1603 				return rc;
1604 			break;
1605 		case PIN_CONFIG_BIAS_PULL_UP:
1606 		case PIN_CONFIG_BIAS_PULL_DOWN:
1607 		case PIN_CONFIG_BIAS_PULL_PIN_DEFAULT:
1608 		case PIN_CONFIG_BIAS_BUS_HOLD:
1609 			if (!rockchip_pinconf_pull_valid(info->ctrl, param))
1610 				return -ENOTSUPP;
1611 
1612 			if (!arg)
1613 				return -EINVAL;
1614 
1615 			rc = rockchip_set_pull(bank, pin - bank->pin_base,
1616 				param);
1617 			if (rc)
1618 				return rc;
1619 			break;
1620 		case PIN_CONFIG_OUTPUT:
1621 			rockchip_gpio_set(&bank->gpio_chip,
1622 					  pin - bank->pin_base, arg);
1623 			rc = _rockchip_pmx_gpio_set_direction(&bank->gpio_chip,
1624 					  pin - bank->pin_base, false);
1625 			if (rc)
1626 				return rc;
1627 			break;
1628 		case PIN_CONFIG_DRIVE_STRENGTH:
1629 			/* rk3288 is the first with per-pin drive-strength */
1630 			if (!info->ctrl->drv_calc_reg)
1631 				return -ENOTSUPP;
1632 
1633 			rc = rockchip_set_drive_perpin(bank,
1634 						pin - bank->pin_base, arg);
1635 			if (rc < 0)
1636 				return rc;
1637 			break;
1638 		case PIN_CONFIG_INPUT_SCHMITT_ENABLE:
1639 			if (!info->ctrl->schmitt_calc_reg)
1640 				return -ENOTSUPP;
1641 
1642 			rc = rockchip_set_schmitt(bank,
1643 						  pin - bank->pin_base, arg);
1644 			if (rc < 0)
1645 				return rc;
1646 			break;
1647 		default:
1648 			return -ENOTSUPP;
1649 			break;
1650 		}
1651 	} /* for each config */
1652 
1653 	return 0;
1654 }
1655 
1656 /* get the pin config settings for a specified pin */
1657 static int rockchip_pinconf_get(struct pinctrl_dev *pctldev, unsigned int pin,
1658 							unsigned long *config)
1659 {
1660 	struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
1661 	struct rockchip_pin_bank *bank = pin_to_bank(info, pin);
1662 	enum pin_config_param param = pinconf_to_config_param(*config);
1663 	u16 arg;
1664 	int rc;
1665 
1666 	switch (param) {
1667 	case PIN_CONFIG_BIAS_DISABLE:
1668 		if (rockchip_get_pull(bank, pin - bank->pin_base) != param)
1669 			return -EINVAL;
1670 
1671 		arg = 0;
1672 		break;
1673 	case PIN_CONFIG_BIAS_PULL_UP:
1674 	case PIN_CONFIG_BIAS_PULL_DOWN:
1675 	case PIN_CONFIG_BIAS_PULL_PIN_DEFAULT:
1676 	case PIN_CONFIG_BIAS_BUS_HOLD:
1677 		if (!rockchip_pinconf_pull_valid(info->ctrl, param))
1678 			return -ENOTSUPP;
1679 
1680 		if (rockchip_get_pull(bank, pin - bank->pin_base) != param)
1681 			return -EINVAL;
1682 
1683 		arg = 1;
1684 		break;
1685 	case PIN_CONFIG_OUTPUT:
1686 		rc = rockchip_get_mux(bank, pin - bank->pin_base);
1687 		if (rc != RK_FUNC_GPIO)
1688 			return -EINVAL;
1689 
1690 		rc = rockchip_gpio_get(&bank->gpio_chip, pin - bank->pin_base);
1691 		if (rc < 0)
1692 			return rc;
1693 
1694 		arg = rc ? 1 : 0;
1695 		break;
1696 	case PIN_CONFIG_DRIVE_STRENGTH:
1697 		/* rk3288 is the first with per-pin drive-strength */
1698 		if (!info->ctrl->drv_calc_reg)
1699 			return -ENOTSUPP;
1700 
1701 		rc = rockchip_get_drive_perpin(bank, pin - bank->pin_base);
1702 		if (rc < 0)
1703 			return rc;
1704 
1705 		arg = rc;
1706 		break;
1707 	case PIN_CONFIG_INPUT_SCHMITT_ENABLE:
1708 		if (!info->ctrl->schmitt_calc_reg)
1709 			return -ENOTSUPP;
1710 
1711 		rc = rockchip_get_schmitt(bank, pin - bank->pin_base);
1712 		if (rc < 0)
1713 			return rc;
1714 
1715 		arg = rc;
1716 		break;
1717 	default:
1718 		return -ENOTSUPP;
1719 		break;
1720 	}
1721 
1722 	*config = pinconf_to_config_packed(param, arg);
1723 
1724 	return 0;
1725 }
1726 
1727 static const struct pinconf_ops rockchip_pinconf_ops = {
1728 	.pin_config_get			= rockchip_pinconf_get,
1729 	.pin_config_set			= rockchip_pinconf_set,
1730 	.is_generic			= true,
1731 };
1732 
1733 static const struct of_device_id rockchip_bank_match[] = {
1734 	{ .compatible = "rockchip,gpio-bank" },
1735 	{ .compatible = "rockchip,rk3188-gpio-bank0" },
1736 	{},
1737 };
1738 
1739 static void rockchip_pinctrl_child_count(struct rockchip_pinctrl *info,
1740 						struct device_node *np)
1741 {
1742 	struct device_node *child;
1743 
1744 	for_each_child_of_node(np, child) {
1745 		if (of_match_node(rockchip_bank_match, child))
1746 			continue;
1747 
1748 		info->nfunctions++;
1749 		info->ngroups += of_get_child_count(child);
1750 	}
1751 }
1752 
1753 static int rockchip_pinctrl_parse_groups(struct device_node *np,
1754 					      struct rockchip_pin_group *grp,
1755 					      struct rockchip_pinctrl *info,
1756 					      u32 index)
1757 {
1758 	struct rockchip_pin_bank *bank;
1759 	int size;
1760 	const __be32 *list;
1761 	int num;
1762 	int i, j;
1763 	int ret;
1764 
1765 	dev_dbg(info->dev, "group(%d): %s\n", index, np->name);
1766 
1767 	/* Initialise group */
1768 	grp->name = np->name;
1769 
1770 	/*
1771 	 * the binding format is rockchip,pins = <bank pin mux CONFIG>,
1772 	 * do sanity check and calculate pins number
1773 	 */
1774 	list = of_get_property(np, "rockchip,pins", &size);
1775 	/* we do not check return since it's safe node passed down */
1776 	size /= sizeof(*list);
1777 	if (!size || size % 4) {
1778 		dev_err(info->dev, "wrong pins number or pins and configs should be by 4\n");
1779 		return -EINVAL;
1780 	}
1781 
1782 	grp->npins = size / 4;
1783 
1784 	grp->pins = devm_kzalloc(info->dev, grp->npins * sizeof(unsigned int),
1785 						GFP_KERNEL);
1786 	grp->data = devm_kzalloc(info->dev, grp->npins *
1787 					  sizeof(struct rockchip_pin_config),
1788 					GFP_KERNEL);
1789 	if (!grp->pins || !grp->data)
1790 		return -ENOMEM;
1791 
1792 	for (i = 0, j = 0; i < size; i += 4, j++) {
1793 		const __be32 *phandle;
1794 		struct device_node *np_config;
1795 
1796 		num = be32_to_cpu(*list++);
1797 		bank = bank_num_to_bank(info, num);
1798 		if (IS_ERR(bank))
1799 			return PTR_ERR(bank);
1800 
1801 		grp->pins[j] = bank->pin_base + be32_to_cpu(*list++);
1802 		grp->data[j].func = be32_to_cpu(*list++);
1803 
1804 		phandle = list++;
1805 		if (!phandle)
1806 			return -EINVAL;
1807 
1808 		np_config = of_find_node_by_phandle(be32_to_cpup(phandle));
1809 		ret = pinconf_generic_parse_dt_config(np_config, NULL,
1810 				&grp->data[j].configs, &grp->data[j].nconfigs);
1811 		if (ret)
1812 			return ret;
1813 	}
1814 
1815 	return 0;
1816 }
1817 
1818 static int rockchip_pinctrl_parse_functions(struct device_node *np,
1819 						struct rockchip_pinctrl *info,
1820 						u32 index)
1821 {
1822 	struct device_node *child;
1823 	struct rockchip_pmx_func *func;
1824 	struct rockchip_pin_group *grp;
1825 	int ret;
1826 	static u32 grp_index;
1827 	u32 i = 0;
1828 
1829 	dev_dbg(info->dev, "parse function(%d): %s\n", index, np->name);
1830 
1831 	func = &info->functions[index];
1832 
1833 	/* Initialise function */
1834 	func->name = np->name;
1835 	func->ngroups = of_get_child_count(np);
1836 	if (func->ngroups <= 0)
1837 		return 0;
1838 
1839 	func->groups = devm_kzalloc(info->dev,
1840 			func->ngroups * sizeof(char *), GFP_KERNEL);
1841 	if (!func->groups)
1842 		return -ENOMEM;
1843 
1844 	for_each_child_of_node(np, child) {
1845 		func->groups[i] = child->name;
1846 		grp = &info->groups[grp_index++];
1847 		ret = rockchip_pinctrl_parse_groups(child, grp, info, i++);
1848 		if (ret) {
1849 			of_node_put(child);
1850 			return ret;
1851 		}
1852 	}
1853 
1854 	return 0;
1855 }
1856 
1857 static int rockchip_pinctrl_parse_dt(struct platform_device *pdev,
1858 					      struct rockchip_pinctrl *info)
1859 {
1860 	struct device *dev = &pdev->dev;
1861 	struct device_node *np = dev->of_node;
1862 	struct device_node *child;
1863 	int ret;
1864 	int i;
1865 
1866 	rockchip_pinctrl_child_count(info, np);
1867 
1868 	dev_dbg(&pdev->dev, "nfunctions = %d\n", info->nfunctions);
1869 	dev_dbg(&pdev->dev, "ngroups = %d\n", info->ngroups);
1870 
1871 	info->functions = devm_kzalloc(dev, info->nfunctions *
1872 					      sizeof(struct rockchip_pmx_func),
1873 					      GFP_KERNEL);
1874 	if (!info->functions) {
1875 		dev_err(dev, "failed to allocate memory for function list\n");
1876 		return -EINVAL;
1877 	}
1878 
1879 	info->groups = devm_kzalloc(dev, info->ngroups *
1880 					    sizeof(struct rockchip_pin_group),
1881 					    GFP_KERNEL);
1882 	if (!info->groups) {
1883 		dev_err(dev, "failed allocate memory for ping group list\n");
1884 		return -EINVAL;
1885 	}
1886 
1887 	i = 0;
1888 
1889 	for_each_child_of_node(np, child) {
1890 		if (of_match_node(rockchip_bank_match, child))
1891 			continue;
1892 
1893 		ret = rockchip_pinctrl_parse_functions(child, info, i++);
1894 		if (ret) {
1895 			dev_err(&pdev->dev, "failed to parse function\n");
1896 			of_node_put(child);
1897 			return ret;
1898 		}
1899 	}
1900 
1901 	return 0;
1902 }
1903 
1904 static int rockchip_pinctrl_register(struct platform_device *pdev,
1905 					struct rockchip_pinctrl *info)
1906 {
1907 	struct pinctrl_desc *ctrldesc = &info->pctl;
1908 	struct pinctrl_pin_desc *pindesc, *pdesc;
1909 	struct rockchip_pin_bank *pin_bank;
1910 	int pin, bank, ret;
1911 	int k;
1912 
1913 	ctrldesc->name = "rockchip-pinctrl";
1914 	ctrldesc->owner = THIS_MODULE;
1915 	ctrldesc->pctlops = &rockchip_pctrl_ops;
1916 	ctrldesc->pmxops = &rockchip_pmx_ops;
1917 	ctrldesc->confops = &rockchip_pinconf_ops;
1918 
1919 	pindesc = devm_kzalloc(&pdev->dev, sizeof(*pindesc) *
1920 			info->ctrl->nr_pins, GFP_KERNEL);
1921 	if (!pindesc) {
1922 		dev_err(&pdev->dev, "mem alloc for pin descriptors failed\n");
1923 		return -ENOMEM;
1924 	}
1925 	ctrldesc->pins = pindesc;
1926 	ctrldesc->npins = info->ctrl->nr_pins;
1927 
1928 	pdesc = pindesc;
1929 	for (bank = 0 , k = 0; bank < info->ctrl->nr_banks; bank++) {
1930 		pin_bank = &info->ctrl->pin_banks[bank];
1931 		for (pin = 0; pin < pin_bank->nr_pins; pin++, k++) {
1932 			pdesc->number = k;
1933 			pdesc->name = kasprintf(GFP_KERNEL, "%s-%d",
1934 						pin_bank->name, pin);
1935 			pdesc++;
1936 		}
1937 	}
1938 
1939 	ret = rockchip_pinctrl_parse_dt(pdev, info);
1940 	if (ret)
1941 		return ret;
1942 
1943 	info->pctl_dev = devm_pinctrl_register(&pdev->dev, ctrldesc, info);
1944 	if (IS_ERR(info->pctl_dev)) {
1945 		dev_err(&pdev->dev, "could not register pinctrl driver\n");
1946 		return PTR_ERR(info->pctl_dev);
1947 	}
1948 
1949 	for (bank = 0; bank < info->ctrl->nr_banks; ++bank) {
1950 		pin_bank = &info->ctrl->pin_banks[bank];
1951 		pin_bank->grange.name = pin_bank->name;
1952 		pin_bank->grange.id = bank;
1953 		pin_bank->grange.pin_base = pin_bank->pin_base;
1954 		pin_bank->grange.base = pin_bank->gpio_chip.base;
1955 		pin_bank->grange.npins = pin_bank->gpio_chip.ngpio;
1956 		pin_bank->grange.gc = &pin_bank->gpio_chip;
1957 		pinctrl_add_gpio_range(info->pctl_dev, &pin_bank->grange);
1958 	}
1959 
1960 	return 0;
1961 }
1962 
1963 /*
1964  * GPIO handling
1965  */
1966 
1967 static void rockchip_gpio_set(struct gpio_chip *gc, unsigned offset, int value)
1968 {
1969 	struct rockchip_pin_bank *bank = gpiochip_get_data(gc);
1970 	void __iomem *reg = bank->reg_base + GPIO_SWPORT_DR;
1971 	unsigned long flags;
1972 	u32 data;
1973 
1974 	clk_enable(bank->clk);
1975 	raw_spin_lock_irqsave(&bank->slock, flags);
1976 
1977 	data = readl(reg);
1978 	data &= ~BIT(offset);
1979 	if (value)
1980 		data |= BIT(offset);
1981 	writel(data, reg);
1982 
1983 	raw_spin_unlock_irqrestore(&bank->slock, flags);
1984 	clk_disable(bank->clk);
1985 }
1986 
1987 /*
1988  * Returns the level of the pin for input direction and setting of the DR
1989  * register for output gpios.
1990  */
1991 static int rockchip_gpio_get(struct gpio_chip *gc, unsigned offset)
1992 {
1993 	struct rockchip_pin_bank *bank = gpiochip_get_data(gc);
1994 	u32 data;
1995 
1996 	clk_enable(bank->clk);
1997 	data = readl(bank->reg_base + GPIO_EXT_PORT);
1998 	clk_disable(bank->clk);
1999 	data >>= offset;
2000 	data &= 1;
2001 	return data;
2002 }
2003 
2004 /*
2005  * gpiolib gpio_direction_input callback function. The setting of the pin
2006  * mux function as 'gpio input' will be handled by the pinctrl susbsystem
2007  * interface.
2008  */
2009 static int rockchip_gpio_direction_input(struct gpio_chip *gc, unsigned offset)
2010 {
2011 	return pinctrl_gpio_direction_input(gc->base + offset);
2012 }
2013 
2014 /*
2015  * gpiolib gpio_direction_output callback function. The setting of the pin
2016  * mux function as 'gpio output' will be handled by the pinctrl susbsystem
2017  * interface.
2018  */
2019 static int rockchip_gpio_direction_output(struct gpio_chip *gc,
2020 					  unsigned offset, int value)
2021 {
2022 	rockchip_gpio_set(gc, offset, value);
2023 	return pinctrl_gpio_direction_output(gc->base + offset);
2024 }
2025 
2026 /*
2027  * gpiolib gpio_to_irq callback function. Creates a mapping between a GPIO pin
2028  * and a virtual IRQ, if not already present.
2029  */
2030 static int rockchip_gpio_to_irq(struct gpio_chip *gc, unsigned offset)
2031 {
2032 	struct rockchip_pin_bank *bank = gpiochip_get_data(gc);
2033 	unsigned int virq;
2034 
2035 	if (!bank->domain)
2036 		return -ENXIO;
2037 
2038 	virq = irq_create_mapping(bank->domain, offset);
2039 
2040 	return (virq) ? : -ENXIO;
2041 }
2042 
2043 static const struct gpio_chip rockchip_gpiolib_chip = {
2044 	.request = gpiochip_generic_request,
2045 	.free = gpiochip_generic_free,
2046 	.set = rockchip_gpio_set,
2047 	.get = rockchip_gpio_get,
2048 	.get_direction	= rockchip_gpio_get_direction,
2049 	.direction_input = rockchip_gpio_direction_input,
2050 	.direction_output = rockchip_gpio_direction_output,
2051 	.to_irq = rockchip_gpio_to_irq,
2052 	.owner = THIS_MODULE,
2053 };
2054 
2055 /*
2056  * Interrupt handling
2057  */
2058 
2059 static void rockchip_irq_demux(struct irq_desc *desc)
2060 {
2061 	struct irq_chip *chip = irq_desc_get_chip(desc);
2062 	struct rockchip_pin_bank *bank = irq_desc_get_handler_data(desc);
2063 	u32 pend;
2064 
2065 	dev_dbg(bank->drvdata->dev, "got irq for bank %s\n", bank->name);
2066 
2067 	chained_irq_enter(chip, desc);
2068 
2069 	pend = readl_relaxed(bank->reg_base + GPIO_INT_STATUS);
2070 
2071 	while (pend) {
2072 		unsigned int irq, virq;
2073 
2074 		irq = __ffs(pend);
2075 		pend &= ~BIT(irq);
2076 		virq = irq_linear_revmap(bank->domain, irq);
2077 
2078 		if (!virq) {
2079 			dev_err(bank->drvdata->dev, "unmapped irq %d\n", irq);
2080 			continue;
2081 		}
2082 
2083 		dev_dbg(bank->drvdata->dev, "handling irq %d\n", irq);
2084 
2085 		/*
2086 		 * Triggering IRQ on both rising and falling edge
2087 		 * needs manual intervention.
2088 		 */
2089 		if (bank->toggle_edge_mode & BIT(irq)) {
2090 			u32 data, data_old, polarity;
2091 			unsigned long flags;
2092 
2093 			data = readl_relaxed(bank->reg_base + GPIO_EXT_PORT);
2094 			do {
2095 				raw_spin_lock_irqsave(&bank->slock, flags);
2096 
2097 				polarity = readl_relaxed(bank->reg_base +
2098 							 GPIO_INT_POLARITY);
2099 				if (data & BIT(irq))
2100 					polarity &= ~BIT(irq);
2101 				else
2102 					polarity |= BIT(irq);
2103 				writel(polarity,
2104 				       bank->reg_base + GPIO_INT_POLARITY);
2105 
2106 				raw_spin_unlock_irqrestore(&bank->slock, flags);
2107 
2108 				data_old = data;
2109 				data = readl_relaxed(bank->reg_base +
2110 						     GPIO_EXT_PORT);
2111 			} while ((data & BIT(irq)) != (data_old & BIT(irq)));
2112 		}
2113 
2114 		generic_handle_irq(virq);
2115 	}
2116 
2117 	chained_irq_exit(chip, desc);
2118 }
2119 
2120 static int rockchip_irq_set_type(struct irq_data *d, unsigned int type)
2121 {
2122 	struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
2123 	struct rockchip_pin_bank *bank = gc->private;
2124 	u32 mask = BIT(d->hwirq);
2125 	u32 polarity;
2126 	u32 level;
2127 	u32 data;
2128 	unsigned long flags;
2129 	int ret;
2130 
2131 	/* make sure the pin is configured as gpio input */
2132 	ret = rockchip_set_mux(bank, d->hwirq, RK_FUNC_GPIO);
2133 	if (ret < 0)
2134 		return ret;
2135 
2136 	clk_enable(bank->clk);
2137 	raw_spin_lock_irqsave(&bank->slock, flags);
2138 
2139 	data = readl_relaxed(bank->reg_base + GPIO_SWPORT_DDR);
2140 	data &= ~mask;
2141 	writel_relaxed(data, bank->reg_base + GPIO_SWPORT_DDR);
2142 
2143 	raw_spin_unlock_irqrestore(&bank->slock, flags);
2144 
2145 	if (type & IRQ_TYPE_EDGE_BOTH)
2146 		irq_set_handler_locked(d, handle_edge_irq);
2147 	else
2148 		irq_set_handler_locked(d, handle_level_irq);
2149 
2150 	raw_spin_lock_irqsave(&bank->slock, flags);
2151 	irq_gc_lock(gc);
2152 
2153 	level = readl_relaxed(gc->reg_base + GPIO_INTTYPE_LEVEL);
2154 	polarity = readl_relaxed(gc->reg_base + GPIO_INT_POLARITY);
2155 
2156 	switch (type) {
2157 	case IRQ_TYPE_EDGE_BOTH:
2158 		bank->toggle_edge_mode |= mask;
2159 		level |= mask;
2160 
2161 		/*
2162 		 * Determine gpio state. If 1 next interrupt should be falling
2163 		 * otherwise rising.
2164 		 */
2165 		data = readl(bank->reg_base + GPIO_EXT_PORT);
2166 		if (data & mask)
2167 			polarity &= ~mask;
2168 		else
2169 			polarity |= mask;
2170 		break;
2171 	case IRQ_TYPE_EDGE_RISING:
2172 		bank->toggle_edge_mode &= ~mask;
2173 		level |= mask;
2174 		polarity |= mask;
2175 		break;
2176 	case IRQ_TYPE_EDGE_FALLING:
2177 		bank->toggle_edge_mode &= ~mask;
2178 		level |= mask;
2179 		polarity &= ~mask;
2180 		break;
2181 	case IRQ_TYPE_LEVEL_HIGH:
2182 		bank->toggle_edge_mode &= ~mask;
2183 		level &= ~mask;
2184 		polarity |= mask;
2185 		break;
2186 	case IRQ_TYPE_LEVEL_LOW:
2187 		bank->toggle_edge_mode &= ~mask;
2188 		level &= ~mask;
2189 		polarity &= ~mask;
2190 		break;
2191 	default:
2192 		irq_gc_unlock(gc);
2193 		raw_spin_unlock_irqrestore(&bank->slock, flags);
2194 		clk_disable(bank->clk);
2195 		return -EINVAL;
2196 	}
2197 
2198 	writel_relaxed(level, gc->reg_base + GPIO_INTTYPE_LEVEL);
2199 	writel_relaxed(polarity, gc->reg_base + GPIO_INT_POLARITY);
2200 
2201 	irq_gc_unlock(gc);
2202 	raw_spin_unlock_irqrestore(&bank->slock, flags);
2203 	clk_disable(bank->clk);
2204 
2205 	return 0;
2206 }
2207 
2208 static void rockchip_irq_suspend(struct irq_data *d)
2209 {
2210 	struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
2211 	struct rockchip_pin_bank *bank = gc->private;
2212 
2213 	clk_enable(bank->clk);
2214 	bank->saved_masks = irq_reg_readl(gc, GPIO_INTMASK);
2215 	irq_reg_writel(gc, ~gc->wake_active, GPIO_INTMASK);
2216 	clk_disable(bank->clk);
2217 }
2218 
2219 static void rockchip_irq_resume(struct irq_data *d)
2220 {
2221 	struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
2222 	struct rockchip_pin_bank *bank = gc->private;
2223 
2224 	clk_enable(bank->clk);
2225 	irq_reg_writel(gc, bank->saved_masks, GPIO_INTMASK);
2226 	clk_disable(bank->clk);
2227 }
2228 
2229 static void rockchip_irq_enable(struct irq_data *d)
2230 {
2231 	struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
2232 	struct rockchip_pin_bank *bank = gc->private;
2233 
2234 	clk_enable(bank->clk);
2235 	irq_gc_mask_clr_bit(d);
2236 }
2237 
2238 static void rockchip_irq_disable(struct irq_data *d)
2239 {
2240 	struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
2241 	struct rockchip_pin_bank *bank = gc->private;
2242 
2243 	irq_gc_mask_set_bit(d);
2244 	clk_disable(bank->clk);
2245 }
2246 
2247 static int rockchip_interrupts_register(struct platform_device *pdev,
2248 						struct rockchip_pinctrl *info)
2249 {
2250 	struct rockchip_pin_ctrl *ctrl = info->ctrl;
2251 	struct rockchip_pin_bank *bank = ctrl->pin_banks;
2252 	unsigned int clr = IRQ_NOREQUEST | IRQ_NOPROBE | IRQ_NOAUTOEN;
2253 	struct irq_chip_generic *gc;
2254 	int ret;
2255 	int i, j;
2256 
2257 	for (i = 0; i < ctrl->nr_banks; ++i, ++bank) {
2258 		if (!bank->valid) {
2259 			dev_warn(&pdev->dev, "bank %s is not valid\n",
2260 				 bank->name);
2261 			continue;
2262 		}
2263 
2264 		ret = clk_enable(bank->clk);
2265 		if (ret) {
2266 			dev_err(&pdev->dev, "failed to enable clock for bank %s\n",
2267 				bank->name);
2268 			continue;
2269 		}
2270 
2271 		bank->domain = irq_domain_add_linear(bank->of_node, 32,
2272 						&irq_generic_chip_ops, NULL);
2273 		if (!bank->domain) {
2274 			dev_warn(&pdev->dev, "could not initialize irq domain for bank %s\n",
2275 				 bank->name);
2276 			clk_disable(bank->clk);
2277 			continue;
2278 		}
2279 
2280 		ret = irq_alloc_domain_generic_chips(bank->domain, 32, 1,
2281 					 "rockchip_gpio_irq", handle_level_irq,
2282 					 clr, 0, IRQ_GC_INIT_MASK_CACHE);
2283 		if (ret) {
2284 			dev_err(&pdev->dev, "could not alloc generic chips for bank %s\n",
2285 				bank->name);
2286 			irq_domain_remove(bank->domain);
2287 			clk_disable(bank->clk);
2288 			continue;
2289 		}
2290 
2291 		/*
2292 		 * Linux assumes that all interrupts start out disabled/masked.
2293 		 * Our driver only uses the concept of masked and always keeps
2294 		 * things enabled, so for us that's all masked and all enabled.
2295 		 */
2296 		writel_relaxed(0xffffffff, bank->reg_base + GPIO_INTMASK);
2297 		writel_relaxed(0xffffffff, bank->reg_base + GPIO_INTEN);
2298 
2299 		gc = irq_get_domain_generic_chip(bank->domain, 0);
2300 		gc->reg_base = bank->reg_base;
2301 		gc->private = bank;
2302 		gc->chip_types[0].regs.mask = GPIO_INTMASK;
2303 		gc->chip_types[0].regs.ack = GPIO_PORTS_EOI;
2304 		gc->chip_types[0].chip.irq_ack = irq_gc_ack_set_bit;
2305 		gc->chip_types[0].chip.irq_mask = irq_gc_mask_set_bit;
2306 		gc->chip_types[0].chip.irq_unmask = irq_gc_mask_clr_bit;
2307 		gc->chip_types[0].chip.irq_enable = rockchip_irq_enable;
2308 		gc->chip_types[0].chip.irq_disable = rockchip_irq_disable;
2309 		gc->chip_types[0].chip.irq_set_wake = irq_gc_set_wake;
2310 		gc->chip_types[0].chip.irq_suspend = rockchip_irq_suspend;
2311 		gc->chip_types[0].chip.irq_resume = rockchip_irq_resume;
2312 		gc->chip_types[0].chip.irq_set_type = rockchip_irq_set_type;
2313 		gc->wake_enabled = IRQ_MSK(bank->nr_pins);
2314 
2315 		irq_set_chained_handler_and_data(bank->irq,
2316 						 rockchip_irq_demux, bank);
2317 
2318 		/* map the gpio irqs here, when the clock is still running */
2319 		for (j = 0 ; j < 32 ; j++)
2320 			irq_create_mapping(bank->domain, j);
2321 
2322 		clk_disable(bank->clk);
2323 	}
2324 
2325 	return 0;
2326 }
2327 
2328 static int rockchip_gpiolib_register(struct platform_device *pdev,
2329 						struct rockchip_pinctrl *info)
2330 {
2331 	struct rockchip_pin_ctrl *ctrl = info->ctrl;
2332 	struct rockchip_pin_bank *bank = ctrl->pin_banks;
2333 	struct gpio_chip *gc;
2334 	int ret;
2335 	int i;
2336 
2337 	for (i = 0; i < ctrl->nr_banks; ++i, ++bank) {
2338 		if (!bank->valid) {
2339 			dev_warn(&pdev->dev, "bank %s is not valid\n",
2340 				 bank->name);
2341 			continue;
2342 		}
2343 
2344 		bank->gpio_chip = rockchip_gpiolib_chip;
2345 
2346 		gc = &bank->gpio_chip;
2347 		gc->base = bank->pin_base;
2348 		gc->ngpio = bank->nr_pins;
2349 		gc->parent = &pdev->dev;
2350 		gc->of_node = bank->of_node;
2351 		gc->label = bank->name;
2352 
2353 		ret = gpiochip_add_data(gc, bank);
2354 		if (ret) {
2355 			dev_err(&pdev->dev, "failed to register gpio_chip %s, error code: %d\n",
2356 							gc->label, ret);
2357 			goto fail;
2358 		}
2359 	}
2360 
2361 	rockchip_interrupts_register(pdev, info);
2362 
2363 	return 0;
2364 
2365 fail:
2366 	for (--i, --bank; i >= 0; --i, --bank) {
2367 		if (!bank->valid)
2368 			continue;
2369 		gpiochip_remove(&bank->gpio_chip);
2370 	}
2371 	return ret;
2372 }
2373 
2374 static int rockchip_gpiolib_unregister(struct platform_device *pdev,
2375 						struct rockchip_pinctrl *info)
2376 {
2377 	struct rockchip_pin_ctrl *ctrl = info->ctrl;
2378 	struct rockchip_pin_bank *bank = ctrl->pin_banks;
2379 	int i;
2380 
2381 	for (i = 0; i < ctrl->nr_banks; ++i, ++bank) {
2382 		if (!bank->valid)
2383 			continue;
2384 		gpiochip_remove(&bank->gpio_chip);
2385 	}
2386 
2387 	return 0;
2388 }
2389 
2390 static int rockchip_get_bank_data(struct rockchip_pin_bank *bank,
2391 				  struct rockchip_pinctrl *info)
2392 {
2393 	struct resource res;
2394 	void __iomem *base;
2395 
2396 	if (of_address_to_resource(bank->of_node, 0, &res)) {
2397 		dev_err(info->dev, "cannot find IO resource for bank\n");
2398 		return -ENOENT;
2399 	}
2400 
2401 	bank->reg_base = devm_ioremap_resource(info->dev, &res);
2402 	if (IS_ERR(bank->reg_base))
2403 		return PTR_ERR(bank->reg_base);
2404 
2405 	/*
2406 	 * special case, where parts of the pull setting-registers are
2407 	 * part of the PMU register space
2408 	 */
2409 	if (of_device_is_compatible(bank->of_node,
2410 				    "rockchip,rk3188-gpio-bank0")) {
2411 		struct device_node *node;
2412 
2413 		node = of_parse_phandle(bank->of_node->parent,
2414 					"rockchip,pmu", 0);
2415 		if (!node) {
2416 			if (of_address_to_resource(bank->of_node, 1, &res)) {
2417 				dev_err(info->dev, "cannot find IO resource for bank\n");
2418 				return -ENOENT;
2419 			}
2420 
2421 			base = devm_ioremap_resource(info->dev, &res);
2422 			if (IS_ERR(base))
2423 				return PTR_ERR(base);
2424 			rockchip_regmap_config.max_register =
2425 						    resource_size(&res) - 4;
2426 			rockchip_regmap_config.name =
2427 					    "rockchip,rk3188-gpio-bank0-pull";
2428 			bank->regmap_pull = devm_regmap_init_mmio(info->dev,
2429 						    base,
2430 						    &rockchip_regmap_config);
2431 		}
2432 	}
2433 
2434 	bank->irq = irq_of_parse_and_map(bank->of_node, 0);
2435 
2436 	bank->clk = of_clk_get(bank->of_node, 0);
2437 	if (IS_ERR(bank->clk))
2438 		return PTR_ERR(bank->clk);
2439 
2440 	return clk_prepare(bank->clk);
2441 }
2442 
2443 static const struct of_device_id rockchip_pinctrl_dt_match[];
2444 
2445 /* retrieve the soc specific data */
2446 static struct rockchip_pin_ctrl *rockchip_pinctrl_get_soc_data(
2447 						struct rockchip_pinctrl *d,
2448 						struct platform_device *pdev)
2449 {
2450 	const struct of_device_id *match;
2451 	struct device_node *node = pdev->dev.of_node;
2452 	struct device_node *np;
2453 	struct rockchip_pin_ctrl *ctrl;
2454 	struct rockchip_pin_bank *bank;
2455 	int grf_offs, pmu_offs, drv_grf_offs, drv_pmu_offs, i, j;
2456 
2457 	match = of_match_node(rockchip_pinctrl_dt_match, node);
2458 	ctrl = (struct rockchip_pin_ctrl *)match->data;
2459 
2460 	for_each_child_of_node(node, np) {
2461 		if (!of_find_property(np, "gpio-controller", NULL))
2462 			continue;
2463 
2464 		bank = ctrl->pin_banks;
2465 		for (i = 0; i < ctrl->nr_banks; ++i, ++bank) {
2466 			if (!strcmp(bank->name, np->name)) {
2467 				bank->of_node = np;
2468 
2469 				if (!rockchip_get_bank_data(bank, d))
2470 					bank->valid = true;
2471 
2472 				break;
2473 			}
2474 		}
2475 	}
2476 
2477 	grf_offs = ctrl->grf_mux_offset;
2478 	pmu_offs = ctrl->pmu_mux_offset;
2479 	drv_pmu_offs = ctrl->pmu_drv_offset;
2480 	drv_grf_offs = ctrl->grf_drv_offset;
2481 	bank = ctrl->pin_banks;
2482 	for (i = 0; i < ctrl->nr_banks; ++i, ++bank) {
2483 		int bank_pins = 0;
2484 
2485 		raw_spin_lock_init(&bank->slock);
2486 		bank->drvdata = d;
2487 		bank->pin_base = ctrl->nr_pins;
2488 		ctrl->nr_pins += bank->nr_pins;
2489 
2490 		/* calculate iomux and drv offsets */
2491 		for (j = 0; j < 4; j++) {
2492 			struct rockchip_iomux *iom = &bank->iomux[j];
2493 			struct rockchip_drv *drv = &bank->drv[j];
2494 			int inc;
2495 
2496 			if (bank_pins >= bank->nr_pins)
2497 				break;
2498 
2499 			/* preset iomux offset value, set new start value */
2500 			if (iom->offset >= 0) {
2501 				if (iom->type & IOMUX_SOURCE_PMU)
2502 					pmu_offs = iom->offset;
2503 				else
2504 					grf_offs = iom->offset;
2505 			} else { /* set current iomux offset */
2506 				iom->offset = (iom->type & IOMUX_SOURCE_PMU) ?
2507 							pmu_offs : grf_offs;
2508 			}
2509 
2510 			/* preset drv offset value, set new start value */
2511 			if (drv->offset >= 0) {
2512 				if (iom->type & IOMUX_SOURCE_PMU)
2513 					drv_pmu_offs = drv->offset;
2514 				else
2515 					drv_grf_offs = drv->offset;
2516 			} else { /* set current drv offset */
2517 				drv->offset = (iom->type & IOMUX_SOURCE_PMU) ?
2518 						drv_pmu_offs : drv_grf_offs;
2519 			}
2520 
2521 			dev_dbg(d->dev, "bank %d, iomux %d has iom_offset 0x%x drv_offset 0x%x\n",
2522 				i, j, iom->offset, drv->offset);
2523 
2524 			/*
2525 			 * Increase offset according to iomux width.
2526 			 * 4bit iomux'es are spread over two registers.
2527 			 */
2528 			inc = (iom->type & (IOMUX_WIDTH_4BIT |
2529 					    IOMUX_WIDTH_3BIT)) ? 8 : 4;
2530 			if (iom->type & IOMUX_SOURCE_PMU)
2531 				pmu_offs += inc;
2532 			else
2533 				grf_offs += inc;
2534 
2535 			/*
2536 			 * Increase offset according to drv width.
2537 			 * 3bit drive-strenth'es are spread over two registers.
2538 			 */
2539 			if ((drv->drv_type == DRV_TYPE_IO_1V8_3V0_AUTO) ||
2540 			    (drv->drv_type == DRV_TYPE_IO_3V3_ONLY))
2541 				inc = 8;
2542 			else
2543 				inc = 4;
2544 
2545 			if (iom->type & IOMUX_SOURCE_PMU)
2546 				drv_pmu_offs += inc;
2547 			else
2548 				drv_grf_offs += inc;
2549 
2550 			bank_pins += 8;
2551 		}
2552 	}
2553 
2554 	return ctrl;
2555 }
2556 
2557 #define RK3288_GRF_GPIO6C_IOMUX		0x64
2558 #define GPIO6C6_SEL_WRITE_ENABLE	BIT(28)
2559 
2560 static u32 rk3288_grf_gpio6c_iomux;
2561 
2562 static int __maybe_unused rockchip_pinctrl_suspend(struct device *dev)
2563 {
2564 	struct rockchip_pinctrl *info = dev_get_drvdata(dev);
2565 	int ret = pinctrl_force_sleep(info->pctl_dev);
2566 
2567 	if (ret)
2568 		return ret;
2569 
2570 	/*
2571 	 * RK3288 GPIO6_C6 mux would be modified by Maskrom when resume, so save
2572 	 * the setting here, and restore it at resume.
2573 	 */
2574 	if (info->ctrl->type == RK3288) {
2575 		ret = regmap_read(info->regmap_base, RK3288_GRF_GPIO6C_IOMUX,
2576 				  &rk3288_grf_gpio6c_iomux);
2577 		if (ret) {
2578 			pinctrl_force_default(info->pctl_dev);
2579 			return ret;
2580 		}
2581 	}
2582 
2583 	return 0;
2584 }
2585 
2586 static int __maybe_unused rockchip_pinctrl_resume(struct device *dev)
2587 {
2588 	struct rockchip_pinctrl *info = dev_get_drvdata(dev);
2589 	int ret = regmap_write(info->regmap_base, RK3288_GRF_GPIO6C_IOMUX,
2590 			       rk3288_grf_gpio6c_iomux |
2591 			       GPIO6C6_SEL_WRITE_ENABLE);
2592 
2593 	if (ret)
2594 		return ret;
2595 
2596 	return pinctrl_force_default(info->pctl_dev);
2597 }
2598 
2599 static SIMPLE_DEV_PM_OPS(rockchip_pinctrl_dev_pm_ops, rockchip_pinctrl_suspend,
2600 			 rockchip_pinctrl_resume);
2601 
2602 static int rockchip_pinctrl_probe(struct platform_device *pdev)
2603 {
2604 	struct rockchip_pinctrl *info;
2605 	struct device *dev = &pdev->dev;
2606 	struct rockchip_pin_ctrl *ctrl;
2607 	struct device_node *np = pdev->dev.of_node, *node;
2608 	struct resource *res;
2609 	void __iomem *base;
2610 	int ret;
2611 
2612 	if (!dev->of_node) {
2613 		dev_err(dev, "device tree node not found\n");
2614 		return -ENODEV;
2615 	}
2616 
2617 	info = devm_kzalloc(dev, sizeof(struct rockchip_pinctrl), GFP_KERNEL);
2618 	if (!info)
2619 		return -ENOMEM;
2620 
2621 	info->dev = dev;
2622 
2623 	ctrl = rockchip_pinctrl_get_soc_data(info, pdev);
2624 	if (!ctrl) {
2625 		dev_err(dev, "driver data not available\n");
2626 		return -EINVAL;
2627 	}
2628 	info->ctrl = ctrl;
2629 
2630 	node = of_parse_phandle(np, "rockchip,grf", 0);
2631 	if (node) {
2632 		info->regmap_base = syscon_node_to_regmap(node);
2633 		if (IS_ERR(info->regmap_base))
2634 			return PTR_ERR(info->regmap_base);
2635 	} else {
2636 		res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2637 		base = devm_ioremap_resource(&pdev->dev, res);
2638 		if (IS_ERR(base))
2639 			return PTR_ERR(base);
2640 
2641 		rockchip_regmap_config.max_register = resource_size(res) - 4;
2642 		rockchip_regmap_config.name = "rockchip,pinctrl";
2643 		info->regmap_base = devm_regmap_init_mmio(&pdev->dev, base,
2644 						    &rockchip_regmap_config);
2645 
2646 		/* to check for the old dt-bindings */
2647 		info->reg_size = resource_size(res);
2648 
2649 		/* Honor the old binding, with pull registers as 2nd resource */
2650 		if (ctrl->type == RK3188 && info->reg_size < 0x200) {
2651 			res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
2652 			base = devm_ioremap_resource(&pdev->dev, res);
2653 			if (IS_ERR(base))
2654 				return PTR_ERR(base);
2655 
2656 			rockchip_regmap_config.max_register =
2657 							resource_size(res) - 4;
2658 			rockchip_regmap_config.name = "rockchip,pinctrl-pull";
2659 			info->regmap_pull = devm_regmap_init_mmio(&pdev->dev,
2660 						    base,
2661 						    &rockchip_regmap_config);
2662 		}
2663 	}
2664 
2665 	/* try to find the optional reference to the pmu syscon */
2666 	node = of_parse_phandle(np, "rockchip,pmu", 0);
2667 	if (node) {
2668 		info->regmap_pmu = syscon_node_to_regmap(node);
2669 		if (IS_ERR(info->regmap_pmu))
2670 			return PTR_ERR(info->regmap_pmu);
2671 	}
2672 
2673 	ret = rockchip_gpiolib_register(pdev, info);
2674 	if (ret)
2675 		return ret;
2676 
2677 	ret = rockchip_pinctrl_register(pdev, info);
2678 	if (ret) {
2679 		rockchip_gpiolib_unregister(pdev, info);
2680 		return ret;
2681 	}
2682 
2683 	platform_set_drvdata(pdev, info);
2684 
2685 	return 0;
2686 }
2687 
2688 static struct rockchip_pin_bank rv1108_pin_banks[] = {
2689 	PIN_BANK_IOMUX_FLAGS(0, 32, "gpio0", IOMUX_SOURCE_PMU,
2690 					     IOMUX_SOURCE_PMU,
2691 					     IOMUX_SOURCE_PMU,
2692 					     IOMUX_SOURCE_PMU),
2693 	PIN_BANK_IOMUX_FLAGS(1, 32, "gpio1", 0, 0, 0, 0),
2694 	PIN_BANK_IOMUX_FLAGS(2, 32, "gpio2", 0, 0, 0, 0),
2695 	PIN_BANK_IOMUX_FLAGS(3, 32, "gpio3", 0, 0, 0, 0),
2696 };
2697 
2698 static struct rockchip_pin_ctrl rv1108_pin_ctrl = {
2699 	.pin_banks		= rv1108_pin_banks,
2700 	.nr_banks		= ARRAY_SIZE(rv1108_pin_banks),
2701 	.label			= "RV1108-GPIO",
2702 	.type			= RV1108,
2703 	.grf_mux_offset		= 0x10,
2704 	.pmu_mux_offset		= 0x0,
2705 	.pull_calc_reg		= rv1108_calc_pull_reg_and_bit,
2706 	.drv_calc_reg		= rv1108_calc_drv_reg_and_bit,
2707 };
2708 
2709 static struct rockchip_pin_bank rk2928_pin_banks[] = {
2710 	PIN_BANK(0, 32, "gpio0"),
2711 	PIN_BANK(1, 32, "gpio1"),
2712 	PIN_BANK(2, 32, "gpio2"),
2713 	PIN_BANK(3, 32, "gpio3"),
2714 };
2715 
2716 static struct rockchip_pin_ctrl rk2928_pin_ctrl = {
2717 		.pin_banks		= rk2928_pin_banks,
2718 		.nr_banks		= ARRAY_SIZE(rk2928_pin_banks),
2719 		.label			= "RK2928-GPIO",
2720 		.type			= RK2928,
2721 		.grf_mux_offset		= 0xa8,
2722 		.pull_calc_reg		= rk2928_calc_pull_reg_and_bit,
2723 };
2724 
2725 static struct rockchip_pin_bank rk3036_pin_banks[] = {
2726 	PIN_BANK(0, 32, "gpio0"),
2727 	PIN_BANK(1, 32, "gpio1"),
2728 	PIN_BANK(2, 32, "gpio2"),
2729 };
2730 
2731 static struct rockchip_pin_ctrl rk3036_pin_ctrl = {
2732 		.pin_banks		= rk3036_pin_banks,
2733 		.nr_banks		= ARRAY_SIZE(rk3036_pin_banks),
2734 		.label			= "RK3036-GPIO",
2735 		.type			= RK2928,
2736 		.grf_mux_offset		= 0xa8,
2737 		.pull_calc_reg		= rk2928_calc_pull_reg_and_bit,
2738 };
2739 
2740 static struct rockchip_pin_bank rk3066a_pin_banks[] = {
2741 	PIN_BANK(0, 32, "gpio0"),
2742 	PIN_BANK(1, 32, "gpio1"),
2743 	PIN_BANK(2, 32, "gpio2"),
2744 	PIN_BANK(3, 32, "gpio3"),
2745 	PIN_BANK(4, 32, "gpio4"),
2746 	PIN_BANK(6, 16, "gpio6"),
2747 };
2748 
2749 static struct rockchip_pin_ctrl rk3066a_pin_ctrl = {
2750 		.pin_banks		= rk3066a_pin_banks,
2751 		.nr_banks		= ARRAY_SIZE(rk3066a_pin_banks),
2752 		.label			= "RK3066a-GPIO",
2753 		.type			= RK2928,
2754 		.grf_mux_offset		= 0xa8,
2755 		.pull_calc_reg		= rk2928_calc_pull_reg_and_bit,
2756 };
2757 
2758 static struct rockchip_pin_bank rk3066b_pin_banks[] = {
2759 	PIN_BANK(0, 32, "gpio0"),
2760 	PIN_BANK(1, 32, "gpio1"),
2761 	PIN_BANK(2, 32, "gpio2"),
2762 	PIN_BANK(3, 32, "gpio3"),
2763 };
2764 
2765 static struct rockchip_pin_ctrl rk3066b_pin_ctrl = {
2766 		.pin_banks	= rk3066b_pin_banks,
2767 		.nr_banks	= ARRAY_SIZE(rk3066b_pin_banks),
2768 		.label		= "RK3066b-GPIO",
2769 		.type		= RK3066B,
2770 		.grf_mux_offset	= 0x60,
2771 };
2772 
2773 static struct rockchip_pin_bank rk3188_pin_banks[] = {
2774 	PIN_BANK_IOMUX_FLAGS(0, 32, "gpio0", IOMUX_GPIO_ONLY, 0, 0, 0),
2775 	PIN_BANK(1, 32, "gpio1"),
2776 	PIN_BANK(2, 32, "gpio2"),
2777 	PIN_BANK(3, 32, "gpio3"),
2778 };
2779 
2780 static struct rockchip_pin_ctrl rk3188_pin_ctrl = {
2781 		.pin_banks		= rk3188_pin_banks,
2782 		.nr_banks		= ARRAY_SIZE(rk3188_pin_banks),
2783 		.label			= "RK3188-GPIO",
2784 		.type			= RK3188,
2785 		.grf_mux_offset		= 0x60,
2786 		.pull_calc_reg		= rk3188_calc_pull_reg_and_bit,
2787 };
2788 
2789 static struct rockchip_pin_bank rk3228_pin_banks[] = {
2790 	PIN_BANK(0, 32, "gpio0"),
2791 	PIN_BANK(1, 32, "gpio1"),
2792 	PIN_BANK(2, 32, "gpio2"),
2793 	PIN_BANK(3, 32, "gpio3"),
2794 };
2795 
2796 static struct rockchip_pin_ctrl rk3228_pin_ctrl = {
2797 		.pin_banks		= rk3228_pin_banks,
2798 		.nr_banks		= ARRAY_SIZE(rk3228_pin_banks),
2799 		.label			= "RK3228-GPIO",
2800 		.type			= RK3288,
2801 		.grf_mux_offset		= 0x0,
2802 		.pull_calc_reg		= rk3228_calc_pull_reg_and_bit,
2803 		.drv_calc_reg		= rk3228_calc_drv_reg_and_bit,
2804 };
2805 
2806 static struct rockchip_pin_bank rk3288_pin_banks[] = {
2807 	PIN_BANK_IOMUX_FLAGS(0, 24, "gpio0", IOMUX_SOURCE_PMU,
2808 					     IOMUX_SOURCE_PMU,
2809 					     IOMUX_SOURCE_PMU,
2810 					     IOMUX_UNROUTED
2811 			    ),
2812 	PIN_BANK_IOMUX_FLAGS(1, 32, "gpio1", IOMUX_UNROUTED,
2813 					     IOMUX_UNROUTED,
2814 					     IOMUX_UNROUTED,
2815 					     0
2816 			    ),
2817 	PIN_BANK_IOMUX_FLAGS(2, 32, "gpio2", 0, 0, 0, IOMUX_UNROUTED),
2818 	PIN_BANK_IOMUX_FLAGS(3, 32, "gpio3", 0, 0, 0, IOMUX_WIDTH_4BIT),
2819 	PIN_BANK_IOMUX_FLAGS(4, 32, "gpio4", IOMUX_WIDTH_4BIT,
2820 					     IOMUX_WIDTH_4BIT,
2821 					     0,
2822 					     0
2823 			    ),
2824 	PIN_BANK_IOMUX_FLAGS(5, 32, "gpio5", IOMUX_UNROUTED,
2825 					     0,
2826 					     0,
2827 					     IOMUX_UNROUTED
2828 			    ),
2829 	PIN_BANK_IOMUX_FLAGS(6, 32, "gpio6", 0, 0, 0, IOMUX_UNROUTED),
2830 	PIN_BANK_IOMUX_FLAGS(7, 32, "gpio7", 0,
2831 					     0,
2832 					     IOMUX_WIDTH_4BIT,
2833 					     IOMUX_UNROUTED
2834 			    ),
2835 	PIN_BANK(8, 16, "gpio8"),
2836 };
2837 
2838 static struct rockchip_pin_ctrl rk3288_pin_ctrl = {
2839 		.pin_banks		= rk3288_pin_banks,
2840 		.nr_banks		= ARRAY_SIZE(rk3288_pin_banks),
2841 		.label			= "RK3288-GPIO",
2842 		.type			= RK3288,
2843 		.grf_mux_offset		= 0x0,
2844 		.pmu_mux_offset		= 0x84,
2845 		.pull_calc_reg		= rk3288_calc_pull_reg_and_bit,
2846 		.drv_calc_reg		= rk3288_calc_drv_reg_and_bit,
2847 };
2848 
2849 static struct rockchip_pin_bank rk3328_pin_banks[] = {
2850 	PIN_BANK_IOMUX_FLAGS(0, 32, "gpio0", 0, 0, 0, 0),
2851 	PIN_BANK_IOMUX_FLAGS(1, 32, "gpio1", 0, 0, 0, 0),
2852 	PIN_BANK_IOMUX_FLAGS(2, 32, "gpio2", 0,
2853 			     IOMUX_WIDTH_3BIT | IOMUX_RECALCED,
2854 			     IOMUX_WIDTH_3BIT | IOMUX_RECALCED,
2855 			     0),
2856 	PIN_BANK_IOMUX_FLAGS(3, 32, "gpio3",
2857 			     IOMUX_WIDTH_3BIT,
2858 			     IOMUX_WIDTH_3BIT | IOMUX_RECALCED,
2859 			     0,
2860 			     0),
2861 };
2862 
2863 static struct rockchip_pin_ctrl rk3328_pin_ctrl = {
2864 		.pin_banks		= rk3328_pin_banks,
2865 		.nr_banks		= ARRAY_SIZE(rk3328_pin_banks),
2866 		.label			= "RK3328-GPIO",
2867 		.type			= RK3288,
2868 		.grf_mux_offset		= 0x0,
2869 		.pull_calc_reg		= rk3228_calc_pull_reg_and_bit,
2870 		.drv_calc_reg		= rk3228_calc_drv_reg_and_bit,
2871 		.iomux_recalc		= rk3328_recalc_mux,
2872 		.schmitt_calc_reg	= rk3328_calc_schmitt_reg_and_bit,
2873 };
2874 
2875 static struct rockchip_pin_bank rk3368_pin_banks[] = {
2876 	PIN_BANK_IOMUX_FLAGS(0, 32, "gpio0", IOMUX_SOURCE_PMU,
2877 					     IOMUX_SOURCE_PMU,
2878 					     IOMUX_SOURCE_PMU,
2879 					     IOMUX_SOURCE_PMU
2880 			    ),
2881 	PIN_BANK(1, 32, "gpio1"),
2882 	PIN_BANK(2, 32, "gpio2"),
2883 	PIN_BANK(3, 32, "gpio3"),
2884 };
2885 
2886 static struct rockchip_pin_ctrl rk3368_pin_ctrl = {
2887 		.pin_banks		= rk3368_pin_banks,
2888 		.nr_banks		= ARRAY_SIZE(rk3368_pin_banks),
2889 		.label			= "RK3368-GPIO",
2890 		.type			= RK3368,
2891 		.grf_mux_offset		= 0x0,
2892 		.pmu_mux_offset		= 0x0,
2893 		.pull_calc_reg		= rk3368_calc_pull_reg_and_bit,
2894 		.drv_calc_reg		= rk3368_calc_drv_reg_and_bit,
2895 };
2896 
2897 static struct rockchip_pin_bank rk3399_pin_banks[] = {
2898 	PIN_BANK_IOMUX_FLAGS_DRV_FLAGS_OFFSET_PULL_FLAGS(0, 32, "gpio0",
2899 							 IOMUX_SOURCE_PMU,
2900 							 IOMUX_SOURCE_PMU,
2901 							 IOMUX_SOURCE_PMU,
2902 							 IOMUX_SOURCE_PMU,
2903 							 DRV_TYPE_IO_1V8_ONLY,
2904 							 DRV_TYPE_IO_1V8_ONLY,
2905 							 DRV_TYPE_IO_DEFAULT,
2906 							 DRV_TYPE_IO_DEFAULT,
2907 							 0x0,
2908 							 0x8,
2909 							 -1,
2910 							 -1,
2911 							 PULL_TYPE_IO_1V8_ONLY,
2912 							 PULL_TYPE_IO_1V8_ONLY,
2913 							 PULL_TYPE_IO_DEFAULT,
2914 							 PULL_TYPE_IO_DEFAULT
2915 							),
2916 	PIN_BANK_IOMUX_DRV_FLAGS_OFFSET(1, 32, "gpio1", IOMUX_SOURCE_PMU,
2917 					IOMUX_SOURCE_PMU,
2918 					IOMUX_SOURCE_PMU,
2919 					IOMUX_SOURCE_PMU,
2920 					DRV_TYPE_IO_1V8_OR_3V0,
2921 					DRV_TYPE_IO_1V8_OR_3V0,
2922 					DRV_TYPE_IO_1V8_OR_3V0,
2923 					DRV_TYPE_IO_1V8_OR_3V0,
2924 					0x20,
2925 					0x28,
2926 					0x30,
2927 					0x38
2928 					),
2929 	PIN_BANK_DRV_FLAGS_PULL_FLAGS(2, 32, "gpio2", DRV_TYPE_IO_1V8_OR_3V0,
2930 				      DRV_TYPE_IO_1V8_OR_3V0,
2931 				      DRV_TYPE_IO_1V8_ONLY,
2932 				      DRV_TYPE_IO_1V8_ONLY,
2933 				      PULL_TYPE_IO_DEFAULT,
2934 				      PULL_TYPE_IO_DEFAULT,
2935 				      PULL_TYPE_IO_1V8_ONLY,
2936 				      PULL_TYPE_IO_1V8_ONLY
2937 				      ),
2938 	PIN_BANK_DRV_FLAGS(3, 32, "gpio3", DRV_TYPE_IO_3V3_ONLY,
2939 			   DRV_TYPE_IO_3V3_ONLY,
2940 			   DRV_TYPE_IO_3V3_ONLY,
2941 			   DRV_TYPE_IO_1V8_OR_3V0
2942 			   ),
2943 	PIN_BANK_DRV_FLAGS(4, 32, "gpio4", DRV_TYPE_IO_1V8_OR_3V0,
2944 			   DRV_TYPE_IO_1V8_3V0_AUTO,
2945 			   DRV_TYPE_IO_1V8_OR_3V0,
2946 			   DRV_TYPE_IO_1V8_OR_3V0
2947 			   ),
2948 };
2949 
2950 static struct rockchip_pin_ctrl rk3399_pin_ctrl = {
2951 		.pin_banks		= rk3399_pin_banks,
2952 		.nr_banks		= ARRAY_SIZE(rk3399_pin_banks),
2953 		.label			= "RK3399-GPIO",
2954 		.type			= RK3399,
2955 		.grf_mux_offset		= 0xe000,
2956 		.pmu_mux_offset		= 0x0,
2957 		.grf_drv_offset		= 0xe100,
2958 		.pmu_drv_offset		= 0x80,
2959 		.pull_calc_reg		= rk3399_calc_pull_reg_and_bit,
2960 		.drv_calc_reg		= rk3399_calc_drv_reg_and_bit,
2961 };
2962 
2963 static const struct of_device_id rockchip_pinctrl_dt_match[] = {
2964 	{ .compatible = "rockchip,rv1108-pinctrl",
2965 		.data = (void *)&rv1108_pin_ctrl },
2966 	{ .compatible = "rockchip,rk2928-pinctrl",
2967 		.data = (void *)&rk2928_pin_ctrl },
2968 	{ .compatible = "rockchip,rk3036-pinctrl",
2969 		.data = (void *)&rk3036_pin_ctrl },
2970 	{ .compatible = "rockchip,rk3066a-pinctrl",
2971 		.data = (void *)&rk3066a_pin_ctrl },
2972 	{ .compatible = "rockchip,rk3066b-pinctrl",
2973 		.data = (void *)&rk3066b_pin_ctrl },
2974 	{ .compatible = "rockchip,rk3188-pinctrl",
2975 		.data = (void *)&rk3188_pin_ctrl },
2976 	{ .compatible = "rockchip,rk3228-pinctrl",
2977 		.data = (void *)&rk3228_pin_ctrl },
2978 	{ .compatible = "rockchip,rk3288-pinctrl",
2979 		.data = (void *)&rk3288_pin_ctrl },
2980 	{ .compatible = "rockchip,rk3328-pinctrl",
2981 		.data = (void *)&rk3328_pin_ctrl },
2982 	{ .compatible = "rockchip,rk3368-pinctrl",
2983 		.data = (void *)&rk3368_pin_ctrl },
2984 	{ .compatible = "rockchip,rk3399-pinctrl",
2985 		.data = (void *)&rk3399_pin_ctrl },
2986 	{},
2987 };
2988 
2989 static struct platform_driver rockchip_pinctrl_driver = {
2990 	.probe		= rockchip_pinctrl_probe,
2991 	.driver = {
2992 		.name	= "rockchip-pinctrl",
2993 		.pm = &rockchip_pinctrl_dev_pm_ops,
2994 		.of_match_table = rockchip_pinctrl_dt_match,
2995 	},
2996 };
2997 
2998 static int __init rockchip_pinctrl_drv_register(void)
2999 {
3000 	return platform_driver_register(&rockchip_pinctrl_driver);
3001 }
3002 postcore_initcall(rockchip_pinctrl_drv_register);
3003