2 * Pinctrl driver for Rockchip SoCs
4 * Copyright (c) 2013 MundoReader S.L.
5 * Author: Heiko Stuebner <heiko@sntech.de>
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
14 * Copyright (C) 2011-2012 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
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.
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.
26 #include <linux/module.h>
27 #include <linux/platform_device.h>
29 #include <linux/interrupt.h>
30 #include <linux/bitops.h>
31 #include <linux/gpio.h>
32 #include <linux/of_address.h>
33 #include <linux/of_irq.h>
34 #include <linux/pinctrl/machine.h>
35 #include <linux/pinctrl/pinconf.h>
36 #include <linux/pinctrl/pinctrl.h>
37 #include <linux/pinctrl/pinmux.h>
38 #include <linux/pinctrl/pinconf-generic.h>
39 #include <linux/irqchip/chained_irq.h>
40 #include <linux/clk.h>
41 #include <linux/regmap.h>
42 #include <linux/mfd/syscon.h>
43 #include <linux/syscore_ops.h>
44 #include <dt-bindings/pinctrl/rockchip.h>
51 #define pinctrl_dbg(dev, format, arg...) \
52 dev_printk(KERN_INFO , dev , format , ## arg)
54 #define pinctrl_dbg(dev, format, arg...)
58 /* GPIO control registers */
59 #define GPIO_SWPORT_DR 0x00
60 #define GPIO_SWPORT_DDR 0x04
61 #define GPIO_INTEN 0x30
62 #define GPIO_INTMASK 0x34
63 #define GPIO_INTTYPE_LEVEL 0x38
64 #define GPIO_INT_POLARITY 0x3c
65 #define GPIO_INT_STATUS 0x40
66 #define GPIO_INT_RAWSTATUS 0x44
67 #define GPIO_DEBOUNCE 0x48
68 #define GPIO_PORTS_EOI 0x4c
69 #define GPIO_EXT_PORT 0x50
70 #define GPIO_LS_SYNC 0x60
72 enum rockchip_pinctrl_type {
81 * Encode variants of iomux registers into a type variable
83 #define IOMUX_GPIO_ONLY BIT(0)
84 #define IOMUX_WIDTH_4BIT BIT(1)
85 #define IOMUX_SOURCE_PMU BIT(2)
86 #define IOMUX_UNROUTED BIT(3)
89 * @type: iomux variant using IOMUX_* constants
90 * @offset: if initialized to -1 it will be autocalculated, by specifying
91 * an initial offset value the relevant source offset can be reset
92 * to a new value for autocalculating the following iomux registers.
94 struct rockchip_iomux {
100 * @reg_base: register base of the gpio bank
101 * @reg_pull: optional separate register for additional pull settings
102 * @clk: clock of the gpio bank
103 * @irq: interrupt of the gpio bank
104 * @pin_base: first pin number
105 * @nr_pins: number of pins in this bank
106 * @name: name of the bank
107 * @bank_num: number of the bank, to account for holes
108 * @iomux: array describing the 4 iomux sources of the bank
109 * @valid: are all necessary informations present
110 * @of_node: dt node of this bank
111 * @drvdata: common pinctrl basedata
112 * @domain: irqdomain of the gpio bank
113 * @gpio_chip: gpiolib chip
114 * @grange: gpio range
115 * @slock: spinlock for the gpio bank
117 struct rockchip_pin_bank {
118 void __iomem *reg_base;
119 struct regmap *regmap_pull;
126 struct rockchip_iomux iomux[4];
128 struct device_node *of_node;
129 struct rockchip_pinctrl *drvdata;
130 struct irq_domain *domain;
131 struct gpio_chip gpio_chip;
132 struct pinctrl_gpio_range grange;
134 u32 toggle_edge_mode;
139 #define PIN_BANK(id, pins, label) \
152 #define PIN_BANK_IOMUX_FLAGS(id, pins, label, iom0, iom1, iom2, iom3) \
158 { .type = iom0, .offset = -1 }, \
159 { .type = iom1, .offset = -1 }, \
160 { .type = iom2, .offset = -1 }, \
161 { .type = iom3, .offset = -1 }, \
167 struct rockchip_pin_ctrl {
168 struct rockchip_pin_bank *pin_banks;
172 enum rockchip_pinctrl_type type;
175 void (*pull_calc_reg)(struct rockchip_pin_bank *bank,
176 int pin_num, struct regmap **regmap,
180 struct rockchip_pin_config {
182 unsigned long *configs;
183 unsigned int nconfigs;
187 * struct rockchip_pin_group: represent group of pins of a pinmux function.
188 * @name: name of the pin group, used to lookup the group.
189 * @pins: the pins included in this group.
190 * @npins: number of pins included in this group.
191 * @func: the mux function number to be programmed when selected.
192 * @configs: the config values to be set for each pin
193 * @nconfigs: number of configs for each pin
195 struct rockchip_pin_group {
199 struct rockchip_pin_config *data;
203 * struct rockchip_pmx_func: represent a pin function.
204 * @name: name of the pin function, used to lookup the function.
205 * @groups: one or more names of pin groups that provide this function.
206 * @num_groups: number of groups included in @groups.
208 struct rockchip_pmx_func {
214 struct rockchip_pinctrl {
215 struct regmap *regmap_base;
217 struct regmap *regmap_pull;
218 struct regmap *regmap_pmu;
220 struct rockchip_pin_ctrl *ctrl;
221 struct pinctrl_desc pctl;
222 struct pinctrl_dev *pctl_dev;
223 struct rockchip_pin_group *groups;
224 unsigned int ngroups;
225 struct rockchip_pmx_func *functions;
226 unsigned int nfunctions;
229 static struct regmap_config rockchip_regmap_config = {
234 static struct rockchip_pinctrl *g_info;
236 static inline struct rockchip_pin_bank *gc_to_pin_bank(struct gpio_chip *gc)
238 return container_of(gc, struct rockchip_pin_bank, gpio_chip);
241 static const inline struct rockchip_pin_group *pinctrl_name_to_group(
242 const struct rockchip_pinctrl *info,
247 for (i = 0; i < info->ngroups; i++) {
248 if (!strcmp(info->groups[i].name, name))
249 return &info->groups[i];
256 * given a pin number that is local to a pin controller, find out the pin bank
257 * and the register base of the pin bank.
259 static struct rockchip_pin_bank *pin_to_bank(struct rockchip_pinctrl *info,
262 struct rockchip_pin_bank *b = info->ctrl->pin_banks;
264 while (pin >= (b->pin_base + b->nr_pins))
270 static struct rockchip_pin_bank *bank_num_to_bank(
271 struct rockchip_pinctrl *info,
274 struct rockchip_pin_bank *b = info->ctrl->pin_banks;
277 for (i = 0; i < info->ctrl->nr_banks; i++, b++) {
278 if (b->bank_num == num)
282 return ERR_PTR(-EINVAL);
286 * Pinctrl_ops handling
289 static int rockchip_get_groups_count(struct pinctrl_dev *pctldev)
291 struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
293 return info->ngroups;
296 static const char *rockchip_get_group_name(struct pinctrl_dev *pctldev,
299 struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
301 return info->groups[selector].name;
304 static int rockchip_get_group_pins(struct pinctrl_dev *pctldev,
305 unsigned selector, const unsigned **pins,
308 struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
310 if (selector >= info->ngroups)
313 *pins = info->groups[selector].pins;
314 *npins = info->groups[selector].npins;
319 static int rockchip_dt_node_to_map(struct pinctrl_dev *pctldev,
320 struct device_node *np,
321 struct pinctrl_map **map, unsigned *num_maps)
323 struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
324 const struct rockchip_pin_group *grp;
325 struct pinctrl_map *new_map;
326 struct device_node *parent;
331 * first find the group of this node and check if we need to create
332 * config maps for pins
334 grp = pinctrl_name_to_group(info, np->name);
336 dev_err(info->dev, "unable to find group for node %s\n",
341 map_num += grp->npins;
342 new_map = devm_kzalloc(pctldev->dev, sizeof(*new_map) * map_num,
351 parent = of_get_parent(np);
353 devm_kfree(pctldev->dev, new_map);
356 new_map[0].type = PIN_MAP_TYPE_MUX_GROUP;
357 new_map[0].data.mux.function = parent->name;
358 new_map[0].data.mux.group = np->name;
361 /* create config map */
363 for (i = 0; i < grp->npins; i++) {
364 new_map[i].type = PIN_MAP_TYPE_CONFIGS_PIN;
365 new_map[i].data.configs.group_or_pin =
366 pin_get_name(pctldev, grp->pins[i]);
367 new_map[i].data.configs.configs = grp->data[i].configs;
368 new_map[i].data.configs.num_configs = grp->data[i].nconfigs;
371 pinctrl_dbg(pctldev->dev, "maps: function %s group %s num %d\n",
372 (*map)->data.mux.function, (*map)->data.mux.group, map_num);
377 static void rockchip_dt_free_map(struct pinctrl_dev *pctldev,
378 struct pinctrl_map *map, unsigned num_maps)
382 static const struct pinctrl_ops rockchip_pctrl_ops = {
383 .get_groups_count = rockchip_get_groups_count,
384 .get_group_name = rockchip_get_group_name,
385 .get_group_pins = rockchip_get_group_pins,
386 .dt_node_to_map = rockchip_dt_node_to_map,
387 .dt_free_map = rockchip_dt_free_map,
394 static int rockchip_get_mux(struct rockchip_pin_bank *bank, int pin)
396 struct rockchip_pinctrl *info = bank->drvdata;
397 int iomux_num = (pin / 8);
398 struct regmap *regmap;
406 if (bank->iomux[iomux_num].type & IOMUX_UNROUTED) {
407 dev_err(info->dev, "pin %d is unrouted\n", pin);
411 if (bank->iomux[iomux_num].type & IOMUX_GPIO_ONLY)
414 regmap = (bank->iomux[iomux_num].type & IOMUX_SOURCE_PMU)
415 ? info->regmap_pmu : info->regmap_base;
417 /* get basic quadrupel of mux registers and the correct reg inside */
418 mask = (bank->iomux[iomux_num].type & IOMUX_WIDTH_4BIT) ? 0xf : 0x3;
419 reg = bank->iomux[iomux_num].offset;
420 if (bank->iomux[iomux_num].type & IOMUX_WIDTH_4BIT) {
428 ret = regmap_read(regmap, reg, &val);
432 return ((val >> bit) & mask);
436 * Set a new mux function for a pin.
438 * The register is divided into the upper and lower 16 bit. When changing
439 * a value, the previous register value is not read and changed. Instead
440 * it seems the changed bits are marked in the upper 16 bit, while the
441 * changed value gets set in the same offset in the lower 16 bit.
442 * All pin settings seem to be 2 bit wide in both the upper and lower
444 * @bank: pin bank to change
445 * @pin: pin to change
446 * @mux: new mux function to set
448 static int rockchip_set_mux(struct rockchip_pin_bank *bank, int pin, int mux)
450 struct rockchip_pinctrl *info = bank->drvdata;
451 int iomux_num = (pin / 8);
452 struct regmap *regmap;
461 if (bank->iomux[iomux_num].type & IOMUX_UNROUTED) {
462 dev_err(info->dev, "pin %d is unrouted\n", pin);
466 if (bank->iomux[iomux_num].type & IOMUX_GPIO_ONLY) {
467 if (mux != RK_FUNC_GPIO) {
469 "pin %d only supports a gpio mux\n", pin);
476 pinctrl_dbg(info->dev, "setting mux of GPIO%d-%d to %d\n",
477 bank->bank_num, pin, mux);
479 regmap = (bank->iomux[iomux_num].type & IOMUX_SOURCE_PMU)
480 ? info->regmap_pmu : info->regmap_base;
482 /* get basic quadrupel of mux registers and the correct reg inside */
483 mask = (bank->iomux[iomux_num].type & IOMUX_WIDTH_4BIT) ? 0xf : 0x3;
484 reg = bank->iomux[iomux_num].offset;
485 if (bank->iomux[iomux_num].type & IOMUX_WIDTH_4BIT) {
493 spin_lock_irqsave(&bank->slock, flags);
495 data = (mask << (bit + 16));
496 rmask = data | (data >> 16);
497 data |= (mux & mask) << bit;
498 ret = regmap_update_bits(regmap, reg, rmask, data);
500 spin_unlock_irqrestore(&bank->slock, flags);
505 #define RK2928_PULL_OFFSET 0x118
506 #define RK2928_PULL_PINS_PER_REG 16
507 #define RK2928_PULL_BANK_STRIDE 8
509 static void rk2928_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank,
510 int pin_num, struct regmap **regmap,
513 struct rockchip_pinctrl *info = bank->drvdata;
515 *regmap = info->regmap_base;
516 *reg = RK2928_PULL_OFFSET;
517 *reg += bank->bank_num * RK2928_PULL_BANK_STRIDE;
518 *reg += (pin_num / RK2928_PULL_PINS_PER_REG) * 4;
520 *bit = pin_num % RK2928_PULL_PINS_PER_REG;
523 #define RK3188_PULL_OFFSET 0x164
524 #define RK3188_PULL_BITS_PER_PIN 2
525 #define RK3188_PULL_PINS_PER_REG 8
526 #define RK3188_PULL_BANK_STRIDE 16
527 #define RK3188_PULL_PMU_OFFSET 0x64
529 static void rk3188_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank,
530 int pin_num, struct regmap **regmap,
533 struct rockchip_pinctrl *info = bank->drvdata;
535 /* The first 12 pins of the first bank are located elsewhere */
536 if (bank->bank_num == 0 && pin_num < 12) {
537 *regmap = info->regmap_pmu ? info->regmap_pmu
539 *reg = info->regmap_pmu ? RK3188_PULL_PMU_OFFSET : 0;
540 *reg += ((pin_num / RK3188_PULL_PINS_PER_REG) * 4);
541 *bit = pin_num % RK3188_PULL_PINS_PER_REG;
542 *bit *= RK3188_PULL_BITS_PER_PIN;
544 *regmap = info->regmap_pull ? info->regmap_pull
546 *reg = info->regmap_pull ? 0 : RK3188_PULL_OFFSET;
548 /* correct the offset, as it is the 2nd pull register */
550 *reg += bank->bank_num * RK3188_PULL_BANK_STRIDE;
551 *reg += ((pin_num / RK3188_PULL_PINS_PER_REG) * 4);
554 * The bits in these registers have an inverse ordering
555 * with the lowest pin being in bits 15:14 and the highest
558 *bit = 7 - (pin_num % RK3188_PULL_PINS_PER_REG);
559 *bit *= RK3188_PULL_BITS_PER_PIN;
563 #define RK3288_PULL_OFFSET 0x140
564 #define RK3368_PULL_PMU_OFFSET 0x10
565 #define RK3368_PULL_OFFSET 0x100
567 static void rk3288_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank,
568 int pin_num, struct regmap **regmap,
571 struct rockchip_pinctrl *info = bank->drvdata;
572 struct rockchip_pin_ctrl *ctrl = info->ctrl;
574 /* The first 24 pins of the first bank are located in PMU */
575 if (bank->bank_num == 0) {
576 *regmap = info->regmap_pmu;
577 if(ctrl->type == RK3288)
578 *reg = RK3188_PULL_PMU_OFFSET;
579 else if (ctrl->type == RK3368)
580 *reg = RK3368_PULL_PMU_OFFSET;
582 *reg += ((pin_num / RK3188_PULL_PINS_PER_REG) * 4);
583 *bit = pin_num % RK3188_PULL_PINS_PER_REG;
584 *bit *= RK3188_PULL_BITS_PER_PIN;
586 *regmap = info->regmap_base;
587 if(ctrl->type == RK3288)
588 *reg = RK3288_PULL_OFFSET;
589 else if (ctrl->type == RK3368)
590 *reg = RK3368_PULL_OFFSET;
592 /* correct the offset, as we're starting with the 2nd bank */
594 *reg += bank->bank_num * RK3188_PULL_BANK_STRIDE;
595 *reg += ((pin_num / RK3188_PULL_PINS_PER_REG) * 4);
597 *bit = (pin_num % RK3188_PULL_PINS_PER_REG);
598 *bit *= RK3188_PULL_BITS_PER_PIN;
602 #define RK3288_DRV_PMU_OFFSET 0x70
603 #define RK3288_DRV_GRF_OFFSET 0x1c0
604 #define RK3288_DRV_BITS_PER_PIN 2
605 #define RK3288_DRV_PINS_PER_REG 8
606 #define RK3288_DRV_BANK_STRIDE 16
607 static int rk3288_drv_list[] = { 2, 4, 8, 12 };
609 #define RK3368_DRV_PMU_OFFSET 0x20
610 #define RK3368_DRV_GRF_OFFSET 0x200
613 static void rk3288_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank,
614 int pin_num, struct regmap **regmap,
617 struct rockchip_pinctrl *info = bank->drvdata;
618 struct rockchip_pin_ctrl *ctrl = info->ctrl;
620 /* The first 24 pins of the first bank are located in PMU */
621 if (bank->bank_num == 0) {
622 *regmap = info->regmap_pmu;
623 if(ctrl->type == RK3288)
624 *reg = RK3288_DRV_PMU_OFFSET;
625 else if (ctrl->type == RK3368)
626 *reg = RK3368_DRV_PMU_OFFSET;
628 *reg += ((pin_num / RK3288_DRV_PINS_PER_REG) * 4);
629 *bit = pin_num % RK3288_DRV_PINS_PER_REG;
630 *bit *= RK3288_DRV_BITS_PER_PIN;
632 *regmap = info->regmap_base;
633 if(ctrl->type == RK3288)
634 *reg = RK3288_DRV_GRF_OFFSET;
635 else if (ctrl->type == RK3368)
636 *reg = RK3368_DRV_GRF_OFFSET;
639 /* correct the offset, as we're starting with the 2nd bank */
641 *reg += bank->bank_num * RK3288_DRV_BANK_STRIDE;
642 *reg += ((pin_num / RK3288_DRV_PINS_PER_REG) * 4);
644 *bit = (pin_num % RK3288_DRV_PINS_PER_REG);
645 *bit *= RK3288_DRV_BITS_PER_PIN;
649 static int rk3288_get_drive(struct rockchip_pin_bank *bank, int pin_num)
651 struct regmap *regmap;
656 rk3288_calc_drv_reg_and_bit(bank, pin_num, ®map, ®, &bit);
658 ret = regmap_read(regmap, reg, &data);
663 data &= (1 << RK3288_DRV_BITS_PER_PIN) - 1;
665 return rk3288_drv_list[data];
668 static int rk3288_set_drive(struct rockchip_pin_bank *bank, int pin_num,
671 struct rockchip_pinctrl *info = bank->drvdata;
672 struct regmap *regmap;
678 rk3288_calc_drv_reg_and_bit(bank, pin_num, ®map, ®, &bit);
681 for (i = 0; i < ARRAY_SIZE(rk3288_drv_list); i++) {
682 if (rk3288_drv_list[i] == strength) {
689 dev_err(info->dev, "unsupported driver strength %d\n",
694 spin_lock_irqsave(&bank->slock, flags);
696 /* enable the write to the equivalent lower bits */
697 data = ((1 << RK3288_DRV_BITS_PER_PIN) - 1) << (bit + 16);
698 rmask = data | (data >> 16);
699 data |= (ret << bit);
701 ret = regmap_update_bits(regmap, reg, rmask, data);
702 spin_unlock_irqrestore(&bank->slock, flags);
707 static int rockchip_get_pull(struct rockchip_pin_bank *bank, int pin_num)
709 struct rockchip_pinctrl *info = bank->drvdata;
710 struct rockchip_pin_ctrl *ctrl = info->ctrl;
711 struct regmap *regmap;
716 /* rk3066b does support any pulls */
717 if (ctrl->type == RK3066B)
718 return PIN_CONFIG_BIAS_DISABLE;
720 ctrl->pull_calc_reg(bank, pin_num, ®map, ®, &bit);
722 ret = regmap_read(regmap, reg, &data);
726 switch (ctrl->type) {
728 return !(data & BIT(bit))
729 ? PIN_CONFIG_BIAS_PULL_PIN_DEFAULT
730 : PIN_CONFIG_BIAS_DISABLE;
735 data &= (1 << RK3188_PULL_BITS_PER_PIN) - 1;
739 return PIN_CONFIG_BIAS_DISABLE;
741 return PIN_CONFIG_BIAS_PULL_UP;
743 return PIN_CONFIG_BIAS_PULL_DOWN;
745 return PIN_CONFIG_BIAS_BUS_HOLD;
748 dev_err(info->dev, "unknown pull setting\n");
751 dev_err(info->dev, "unsupported pinctrl type\n");
756 static int rockchip_set_pull(struct rockchip_pin_bank *bank,
757 int pin_num, int pull)
759 struct rockchip_pinctrl *info = bank->drvdata;
760 struct rockchip_pin_ctrl *ctrl = info->ctrl;
761 struct regmap *regmap;
767 pinctrl_dbg(info->dev, "setting pull of GPIO%d-%d to %d\n",
768 bank->bank_num, pin_num, pull);
770 /* rk3066b does support any pulls */
771 if (ctrl->type == RK3066B)
772 return pull ? -EINVAL : 0;
774 ctrl->pull_calc_reg(bank, pin_num, ®map, ®, &bit);
776 switch (ctrl->type) {
778 spin_lock_irqsave(&bank->slock, flags);
780 data = BIT(bit + 16);
781 if (pull == PIN_CONFIG_BIAS_DISABLE)
783 ret = regmap_write(regmap, reg, data);
785 spin_unlock_irqrestore(&bank->slock, flags);
790 spin_lock_irqsave(&bank->slock, flags);
792 /* enable the write to the equivalent lower bits */
793 data = ((1 << RK3188_PULL_BITS_PER_PIN) - 1) << (bit + 16);
794 rmask = data | (data >> 16);
797 case PIN_CONFIG_BIAS_DISABLE:
799 case PIN_CONFIG_BIAS_PULL_UP:
802 case PIN_CONFIG_BIAS_PULL_DOWN:
805 case PIN_CONFIG_BIAS_BUS_HOLD:
809 spin_unlock_irqrestore(&bank->slock, flags);
810 dev_err(info->dev, "unsupported pull setting %d\n",
815 ret = regmap_update_bits(regmap, reg, rmask, data);
817 spin_unlock_irqrestore(&bank->slock, flags);
820 dev_err(info->dev, "unsupported pinctrl type\n");
828 * Pinmux_ops handling
831 static int rockchip_pmx_get_funcs_count(struct pinctrl_dev *pctldev)
833 struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
835 return info->nfunctions;
838 static const char *rockchip_pmx_get_func_name(struct pinctrl_dev *pctldev,
841 struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
843 return info->functions[selector].name;
846 static int rockchip_pmx_get_groups(struct pinctrl_dev *pctldev,
847 unsigned selector, const char * const **groups,
848 unsigned * const num_groups)
850 struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
852 *groups = info->functions[selector].groups;
853 *num_groups = info->functions[selector].ngroups;
858 static int rockchip_pmx_enable(struct pinctrl_dev *pctldev, unsigned selector,
861 struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
862 const unsigned int *pins = info->groups[group].pins;
863 const struct rockchip_pin_config *data = info->groups[group].data;
864 struct rockchip_pin_bank *bank;
867 pinctrl_dbg(info->dev, "enable function %s group %s\n",
868 info->functions[selector].name, info->groups[group].name);
871 * for each pin in the pin group selected, program the correspoding pin
872 * pin function number in the config register.
874 for (cnt = 0; cnt < info->groups[group].npins; cnt++) {
875 bank = pin_to_bank(info, pins[cnt]);
876 ret = rockchip_set_mux(bank, pins[cnt] - bank->pin_base,
883 /* revert the already done pin settings */
884 for (cnt--; cnt >= 0; cnt--)
885 rockchip_set_mux(bank, pins[cnt] - bank->pin_base, 0);
893 static void rockchip_pmx_disable(struct pinctrl_dev *pctldev,
894 unsigned selector, unsigned group)
896 struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
897 const unsigned int *pins = info->groups[group].pins;
898 struct rockchip_pin_bank *bank;
901 pinctrl_dbg(info->dev, "disable function %s group %s\n",
902 info->functions[selector].name, info->groups[group].name);
904 for (cnt = 0; cnt < info->groups[group].npins; cnt++) {
905 bank = pin_to_bank(info, pins[cnt]);
906 rockchip_set_mux(bank, pins[cnt] - bank->pin_base, 0);
911 * The calls to gpio_direction_output() and gpio_direction_input()
912 * leads to this function call (via the pinctrl_gpio_direction_{input|output}()
913 * function called from the gpiolib interface).
915 static int rockchip_pmx_gpio_set_direction(struct pinctrl_dev *pctldev,
916 struct pinctrl_gpio_range *range,
917 unsigned offset, bool input)
919 struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
920 struct rockchip_pin_bank *bank;
921 struct gpio_chip *chip;
926 bank = gc_to_pin_bank(chip);
927 pin = offset - chip->base;
929 dev_dbg(info->dev, "gpio_direction for pin %u as %s-%d to %s\n",
930 offset, range->name, pin, input ? "input" : "output");
932 ret = rockchip_set_mux(bank, pin, RK_FUNC_GPIO);
936 data = readl_relaxed(bank->reg_base + GPIO_SWPORT_DDR);
937 /* set bit to 1 for output, 0 for input */
942 writel_relaxed(data, bank->reg_base + GPIO_SWPORT_DDR);
947 static const struct pinmux_ops rockchip_pmx_ops = {
948 .get_functions_count = rockchip_pmx_get_funcs_count,
949 .get_function_name = rockchip_pmx_get_func_name,
950 .get_function_groups = rockchip_pmx_get_groups,
951 .enable = rockchip_pmx_enable,
952 .disable = rockchip_pmx_disable,
953 .gpio_set_direction = rockchip_pmx_gpio_set_direction,
957 * Pinconf_ops handling
960 static bool rockchip_pinconf_pull_valid(struct rockchip_pin_ctrl *ctrl,
961 enum pin_config_param pull)
963 switch (ctrl->type) {
965 return (pull == PIN_CONFIG_BIAS_PULL_PIN_DEFAULT ||
966 pull == PIN_CONFIG_BIAS_DISABLE);
968 return pull ? false : true;
972 return (pull != PIN_CONFIG_BIAS_PULL_PIN_DEFAULT);
978 static int rockchip_gpio_direction_output(struct gpio_chip *gc,
979 unsigned offset, int value);
980 static int rockchip_gpio_get(struct gpio_chip *gc, unsigned offset);
982 /* set the pin config settings for a specified pin */
983 static int rockchip_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin,
984 unsigned long configs)
986 struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
987 struct rockchip_pin_bank *bank = pin_to_bank(info, pin);
988 enum pin_config_param param;
993 //for (i = 0; i < num_configs; i++) {
994 param = pinconf_to_config_param(configs);
995 arg = pinconf_to_config_argument(configs);
998 case PIN_CONFIG_BIAS_DISABLE:
999 rc = rockchip_set_pull(bank, pin - bank->pin_base,
1004 case PIN_CONFIG_BIAS_PULL_UP:
1005 case PIN_CONFIG_BIAS_PULL_DOWN:
1006 case PIN_CONFIG_BIAS_PULL_PIN_DEFAULT:
1007 case PIN_CONFIG_BIAS_BUS_HOLD:
1008 if (!rockchip_pinconf_pull_valid(info->ctrl, param))
1014 rc = rockchip_set_pull(bank, pin - bank->pin_base,
1019 case PIN_CONFIG_OUTPUT:
1020 rc = rockchip_gpio_direction_output(&bank->gpio_chip,
1021 pin - bank->pin_base,
1026 case PIN_CONFIG_DRIVE_STRENGTH:
1027 /* rk3288 RK3368 is the first with per-pin drive-strength */
1028 if ((info->ctrl->type != RK3288) && ((info->ctrl->type != RK3368)))
1031 rc = rk3288_set_drive(bank, pin - bank->pin_base, arg);
1039 //} /* for each config */
1044 /* get the pin config settings for a specified pin */
1045 static int rockchip_pinconf_get(struct pinctrl_dev *pctldev, unsigned int pin,
1046 unsigned long *config)
1048 struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
1049 struct rockchip_pin_bank *bank = pin_to_bank(info, pin);
1050 enum pin_config_param param = pinconf_to_config_param(*config);
1055 case PIN_CONFIG_BIAS_DISABLE:
1056 if (rockchip_get_pull(bank, pin - bank->pin_base) != param)
1061 case PIN_CONFIG_BIAS_PULL_UP:
1062 case PIN_CONFIG_BIAS_PULL_DOWN:
1063 case PIN_CONFIG_BIAS_PULL_PIN_DEFAULT:
1064 case PIN_CONFIG_BIAS_BUS_HOLD:
1065 if (!rockchip_pinconf_pull_valid(info->ctrl, param))
1068 if (rockchip_get_pull(bank, pin - bank->pin_base) != param)
1073 case PIN_CONFIG_OUTPUT:
1074 rc = rockchip_get_mux(bank, pin - bank->pin_base);
1075 if (rc != RK_FUNC_GPIO)
1078 rc = rockchip_gpio_get(&bank->gpio_chip, pin - bank->pin_base);
1084 case PIN_CONFIG_DRIVE_STRENGTH:
1085 /* rk3288 RK3368 is the first with per-pin drive-strength */
1086 if ((info->ctrl->type != RK3288) && ((info->ctrl->type != RK3368)))
1089 rc = rk3288_get_drive(bank, pin - bank->pin_base);
1100 *config = pinconf_to_config_packed(param, arg);
1105 static const struct pinconf_ops rockchip_pinconf_ops = {
1106 .pin_config_get = rockchip_pinconf_get,
1107 .pin_config_set = rockchip_pinconf_set,
1111 static const struct of_device_id rockchip_bank_match[] = {
1112 { .compatible = "rockchip,gpio-bank" },
1113 { .compatible = "rockchip,rk3188-gpio-bank0" },
1117 static void rockchip_pinctrl_child_count(struct rockchip_pinctrl *info,
1118 struct device_node *np)
1120 struct device_node *child;
1122 for_each_child_of_node(np, child) {
1123 if (of_match_node(rockchip_bank_match, child))
1127 info->ngroups += of_get_child_count(child);
1131 static int rockchip_pinctrl_parse_groups(struct device_node *np,
1132 struct rockchip_pin_group *grp,
1133 struct rockchip_pinctrl *info,
1136 struct rockchip_pin_bank *bank;
1143 dev_dbg(info->dev, "group(%d): %s\n", index, np->name);
1145 /* Initialise group */
1146 grp->name = np->name;
1149 * the binding format is rockchip,pins = <bank pin mux CONFIG>,
1150 * do sanity check and calculate pins number
1152 list = of_get_property(np, "rockchip,pins", &size);
1153 /* we do not check return since it's safe node passed down */
1154 size /= sizeof(*list);
1155 if (!size || size % 4) {
1156 dev_err(info->dev, "wrong pins number or pins and configs should be by 4\n");
1160 grp->npins = size / 4;
1162 grp->pins = devm_kzalloc(info->dev, grp->npins * sizeof(unsigned int),
1164 grp->data = devm_kzalloc(info->dev, grp->npins *
1165 sizeof(struct rockchip_pin_config),
1167 if (!grp->pins || !grp->data)
1170 for (i = 0, j = 0; i < size; i += 4, j++) {
1171 const __be32 *phandle;
1172 struct device_node *np_config;
1174 num = be32_to_cpu(*list++);
1175 bank = bank_num_to_bank(info, num);
1177 return PTR_ERR(bank);
1179 grp->pins[j] = bank->pin_base + be32_to_cpu(*list++);
1180 grp->data[j].func = be32_to_cpu(*list++);
1186 np_config = of_find_node_by_phandle(be32_to_cpup(phandle));
1187 ret = pinconf_generic_parse_dt_config(np_config,
1188 &grp->data[j].configs, &grp->data[j].nconfigs);
1196 static int rockchip_pinctrl_parse_functions(struct device_node *np,
1197 struct rockchip_pinctrl *info,
1200 struct device_node *child;
1201 struct rockchip_pmx_func *func;
1202 struct rockchip_pin_group *grp;
1204 static u32 grp_index;
1207 dev_dbg(info->dev, "parse function(%d): %s\n", index, np->name);
1209 func = &info->functions[index];
1211 /* Initialise function */
1212 func->name = np->name;
1213 func->ngroups = of_get_child_count(np);
1214 if (func->ngroups <= 0)
1217 func->groups = devm_kzalloc(info->dev,
1218 func->ngroups * sizeof(char *), GFP_KERNEL);
1222 for_each_child_of_node(np, child) {
1223 func->groups[i] = child->name;
1224 grp = &info->groups[grp_index++];
1225 ret = rockchip_pinctrl_parse_groups(child, grp, info, i++);
1233 static int rockchip_pinctrl_parse_dt(struct platform_device *pdev,
1234 struct rockchip_pinctrl *info)
1236 struct device *dev = &pdev->dev;
1237 struct device_node *np = dev->of_node;
1238 struct device_node *child;
1242 rockchip_pinctrl_child_count(info, np);
1244 dev_dbg(&pdev->dev, "nfunctions = %d\n", info->nfunctions);
1245 dev_dbg(&pdev->dev, "ngroups = %d\n", info->ngroups);
1247 info->functions = devm_kzalloc(dev, info->nfunctions *
1248 sizeof(struct rockchip_pmx_func),
1250 if (!info->functions) {
1251 dev_err(dev, "failed to allocate memory for function list\n");
1255 info->groups = devm_kzalloc(dev, info->ngroups *
1256 sizeof(struct rockchip_pin_group),
1258 if (!info->groups) {
1259 dev_err(dev, "failed allocate memory for ping group list\n");
1265 for_each_child_of_node(np, child) {
1266 if (of_match_node(rockchip_bank_match, child))
1269 ret = rockchip_pinctrl_parse_functions(child, info, i++);
1271 dev_err(&pdev->dev, "failed to parse function\n");
1279 static int rockchip_pinctrl_register(struct platform_device *pdev,
1280 struct rockchip_pinctrl *info)
1282 struct pinctrl_desc *ctrldesc = &info->pctl;
1283 struct pinctrl_pin_desc *pindesc, *pdesc;
1284 struct rockchip_pin_bank *pin_bank;
1288 ctrldesc->name = "rockchip-pinctrl";
1289 ctrldesc->owner = THIS_MODULE;
1290 ctrldesc->pctlops = &rockchip_pctrl_ops;
1291 ctrldesc->pmxops = &rockchip_pmx_ops;
1292 ctrldesc->confops = &rockchip_pinconf_ops;
1294 pindesc = devm_kzalloc(&pdev->dev, sizeof(*pindesc) *
1295 info->ctrl->nr_pins, GFP_KERNEL);
1297 dev_err(&pdev->dev, "mem alloc for pin descriptors failed\n");
1300 ctrldesc->pins = pindesc;
1301 ctrldesc->npins = info->ctrl->nr_pins;
1304 for (bank = 0 , k = 0; bank < info->ctrl->nr_banks; bank++) {
1305 pin_bank = &info->ctrl->pin_banks[bank];
1306 for (pin = 0; pin < pin_bank->nr_pins; pin++, k++) {
1308 pdesc->name = kasprintf(GFP_KERNEL, "%s-%d",
1309 pin_bank->name, pin);
1314 info->pctl_dev = pinctrl_register(ctrldesc, &pdev->dev, info);
1315 if (!info->pctl_dev) {
1316 dev_err(&pdev->dev, "could not register pinctrl driver\n");
1320 for (bank = 0; bank < info->ctrl->nr_banks; ++bank) {
1321 pin_bank = &info->ctrl->pin_banks[bank];
1322 pin_bank->grange.name = pin_bank->name;
1323 pin_bank->grange.id = bank;
1324 pin_bank->grange.pin_base = pin_bank->pin_base;
1325 pin_bank->grange.base = pin_bank->gpio_chip.base;
1326 pin_bank->grange.npins = pin_bank->gpio_chip.ngpio;
1327 pin_bank->grange.gc = &pin_bank->gpio_chip;
1328 pinctrl_add_gpio_range(info->pctl_dev, &pin_bank->grange);
1331 ret = rockchip_pinctrl_parse_dt(pdev, info);
1333 pinctrl_unregister(info->pctl_dev);
1344 static int rockchip_gpio_request(struct gpio_chip *chip, unsigned offset)
1346 return pinctrl_request_gpio(chip->base + offset);
1349 static void rockchip_gpio_free(struct gpio_chip *chip, unsigned offset)
1351 pinctrl_free_gpio(chip->base + offset);
1354 static void rockchip_gpio_set(struct gpio_chip *gc, unsigned offset, int value)
1356 struct rockchip_pin_bank *bank = gc_to_pin_bank(gc);
1357 void __iomem *reg = bank->reg_base + GPIO_SWPORT_DR;
1358 unsigned long flags;
1361 spin_lock_irqsave(&bank->slock, flags);
1364 data &= ~BIT(offset);
1366 data |= BIT(offset);
1369 spin_unlock_irqrestore(&bank->slock, flags);
1373 * Returns the level of the pin for input direction and setting of the DR
1374 * register for output gpios.
1376 static int rockchip_gpio_get(struct gpio_chip *gc, unsigned offset)
1378 struct rockchip_pin_bank *bank = gc_to_pin_bank(gc);
1381 data = readl(bank->reg_base + GPIO_EXT_PORT);
1388 * gpiolib gpio_direction_input callback function. The setting of the pin
1389 * mux function as 'gpio input' will be handled by the pinctrl susbsystem
1392 static int rockchip_gpio_direction_input(struct gpio_chip *gc, unsigned offset)
1394 return pinctrl_gpio_direction_input(gc->base + offset);
1398 * gpiolib gpio_direction_output callback function. The setting of the pin
1399 * mux function as 'gpio output' will be handled by the pinctrl susbsystem
1402 static int rockchip_gpio_direction_output(struct gpio_chip *gc,
1403 unsigned offset, int value)
1405 rockchip_gpio_set(gc, offset, value);
1406 return pinctrl_gpio_direction_output(gc->base + offset);
1410 * gpiolib gpio_to_irq callback function. Creates a mapping between a GPIO pin
1411 * and a virtual IRQ, if not already present.
1413 static int rockchip_gpio_to_irq(struct gpio_chip *gc, unsigned offset)
1415 struct rockchip_pin_bank *bank = gc_to_pin_bank(gc);
1421 virq = irq_create_mapping(bank->domain, offset);
1423 return (virq) ? : -ENXIO;
1426 static const struct gpio_chip rockchip_gpiolib_chip = {
1427 .request = rockchip_gpio_request,
1428 .free = rockchip_gpio_free,
1429 .set = rockchip_gpio_set,
1430 .get = rockchip_gpio_get,
1431 .direction_input = rockchip_gpio_direction_input,
1432 .direction_output = rockchip_gpio_direction_output,
1433 .to_irq = rockchip_gpio_to_irq,
1434 .owner = THIS_MODULE,
1438 * Interrupt handling
1441 static void rockchip_irq_demux(unsigned int irq, struct irq_desc *desc)
1443 struct irq_chip *chip = irq_get_chip(irq);
1444 struct rockchip_pin_bank *bank = irq_get_handler_data(irq);
1445 u32 polarity = 0, data = 0;
1447 bool edge_changed = false;
1449 pinctrl_dbg(bank->drvdata->dev, "got irq for bank %s\n", bank->name);
1451 chained_irq_enter(chip, desc);
1453 pend = readl_relaxed(bank->reg_base + GPIO_INT_STATUS);
1455 if (bank->toggle_edge_mode) {
1456 polarity = readl_relaxed(bank->reg_base +
1458 data = readl_relaxed(bank->reg_base + GPIO_EXT_PORT);
1466 virq = irq_linear_revmap(bank->domain, irq);
1469 dev_err(bank->drvdata->dev, "unmapped irq %d\n", irq);
1473 pinctrl_dbg(bank->drvdata->dev, "handling irq %d\n", irq);
1476 * Triggering IRQ on both rising and falling edge
1477 * needs manual intervention.
1479 if (bank->toggle_edge_mode & BIT(irq)) {
1480 if (data & BIT(irq))
1481 polarity &= ~BIT(irq);
1483 polarity |= BIT(irq);
1485 edge_changed = true;
1488 generic_handle_irq(virq);
1491 if (bank->toggle_edge_mode && edge_changed) {
1492 /* Interrupt params should only be set with ints disabled */
1493 data = readl_relaxed(bank->reg_base + GPIO_INTEN);
1494 writel_relaxed(0, bank->reg_base + GPIO_INTEN);
1495 writel(polarity, bank->reg_base + GPIO_INT_POLARITY);
1496 writel(data, bank->reg_base + GPIO_INTEN);
1499 chained_irq_exit(chip, desc);
1502 static int rockchip_gpio_irq_set_type(struct irq_data *d, unsigned int type)
1504 struct rockchip_pin_bank *bank = irq_data_get_irq_chip_data(d);
1505 //struct rockchip_pinctrl *info = bank->drvdata;
1506 u32 mask = BIT(d->hwirq);
1511 unsigned long flags;
1513 /* make sure the pin is configured as gpio input */
1514 ret = rockchip_set_mux(bank, d->hwirq, RK_FUNC_GPIO);
1518 data = readl_relaxed(bank->reg_base + GPIO_SWPORT_DDR);
1520 writel_relaxed(data, bank->reg_base + GPIO_SWPORT_DDR);
1522 if (type & IRQ_TYPE_EDGE_BOTH)
1523 __irq_set_handler_locked(d->irq, handle_edge_irq);
1525 __irq_set_handler_locked(d->irq, handle_level_irq);
1527 spin_lock_irqsave(&bank->slock, flags);
1529 level = readl_relaxed(bank->reg_base + GPIO_INTTYPE_LEVEL);
1530 polarity = readl_relaxed(bank->reg_base + GPIO_INT_POLARITY);
1533 case IRQ_TYPE_EDGE_BOTH:
1534 bank->toggle_edge_mode |= mask;
1538 * Determine gpio state. If 1 next interrupt should be falling
1541 data = readl(bank->reg_base + GPIO_EXT_PORT);
1547 case IRQ_TYPE_EDGE_RISING:
1548 bank->toggle_edge_mode &= ~mask;
1552 case IRQ_TYPE_EDGE_FALLING:
1553 bank->toggle_edge_mode &= ~mask;
1557 case IRQ_TYPE_LEVEL_HIGH:
1558 bank->toggle_edge_mode &= ~mask;
1562 case IRQ_TYPE_LEVEL_LOW:
1563 bank->toggle_edge_mode &= ~mask;
1568 //irq_gc_unlock(gc);
1572 writel_relaxed(level, bank->reg_base + GPIO_INTTYPE_LEVEL);
1573 writel_relaxed(polarity, bank->reg_base + GPIO_INT_POLARITY);
1575 spin_unlock_irqrestore(&bank->slock, flags);
1577 //DBG_PINCTRL("%s:type=%d,irq=%d,hwirq=%d,ok\n",__func__,type, d->irq, (int)d->hwirq);
1581 static inline void rockchip_gpio_bit_op(void __iomem *reg_base
1582 , unsigned int offset, u32 bit, unsigned char flag)
1584 u32 val = __raw_readl(reg_base + offset);
1591 __raw_writel(val, reg_base + offset);
1594 static inline unsigned gpio_to_bit(struct rockchip_pin_bank *bank, unsigned gpio)
1596 while (gpio >= (bank->pin_base + bank->nr_pins))
1599 return gpio - bank->pin_base;
1602 static inline unsigned offset_to_bit(unsigned offset)
1604 return 1u << offset;
1607 static void GPIOEnableIntr(void __iomem *reg_base, unsigned int bit)
1609 rockchip_gpio_bit_op(reg_base, GPIO_INTEN, bit, 1);
1612 static void GPIODisableIntr(void __iomem *reg_base, unsigned int bit)
1614 rockchip_gpio_bit_op(reg_base, GPIO_INTEN, bit, 0);
1617 static void GPIOAckIntr(void __iomem *reg_base, unsigned int bit)
1619 rockchip_gpio_bit_op(reg_base, GPIO_PORTS_EOI, bit, 1);
1622 static int rockchip_gpio_irq_set_wake(struct irq_data *d, unsigned int on)
1624 struct rockchip_pin_bank *bank = irq_data_get_irq_chip_data(d);
1625 //struct rockchip_pinctrl *info = bank->drvdata;
1627 unsigned long flags;
1628 //int pin = d->hwirq;
1630 spin_lock_irqsave(&bank->slock, flags);
1634 bank->suspend_wakeup |= BIT(bit);
1638 bank->suspend_wakeup &= ~BIT(bit);
1640 spin_unlock_irqrestore(&bank->slock, flags);
1642 //DBG_PINCTRL("%s:irq=%d,hwirq=%d,bank->reg_base=0x%x,bit=%d\n"
1643 //, __func__,d->irq, (int)d->hwirq, (int)bank->reg_base,bit);
1647 static void rockchip_gpio_irq_unmask(struct irq_data *d)
1649 struct rockchip_pin_bank *bank = irq_data_get_irq_chip_data(d);
1650 //struct rockchip_pinctrl *info = bank->drvdata;
1652 unsigned long flags;
1653 //int pin = d->hwirq;
1655 spin_lock_irqsave(&bank->slock, flags);
1656 GPIOEnableIntr(bank->reg_base, bit);
1657 spin_unlock_irqrestore(&bank->slock, flags);
1659 //DBG_PINCTRL("%s:irq=%d,hwirq=%d,bank->reg_base=0x%x,bit=%d\n"
1660 //, __func__,d->irq, (int)d->hwirq, (int)bank->reg_base,bit);
1663 static void rockchip_gpio_irq_mask(struct irq_data *d)
1665 struct rockchip_pin_bank *bank = irq_data_get_irq_chip_data(d);
1666 //struct rockchip_pinctrl *info = bank->drvdata;
1667 //u32 bit = gpio_to_bit(bank, d->irq);
1669 unsigned long flags;
1670 //int pin = d->hwirq;
1672 spin_lock_irqsave(&bank->slock, flags);
1673 GPIODisableIntr(bank->reg_base, bit);
1674 spin_unlock_irqrestore(&bank->slock, flags);
1676 //DBG_PINCTRL("%s:irq=%d,hwirq=%d,bank->reg_base=0x%x,bit=%d\n"
1677 //, __func__,d->irq, (int)d->hwirq, (int)bank->reg_base,bit);
1680 static void rockchip_gpio_irq_ack(struct irq_data *d)
1682 struct rockchip_pin_bank *bank = irq_data_get_irq_chip_data(d);
1683 //struct rockchip_pinctrl *info = bank->drvdata;
1684 //u32 bit = gpio_to_bit(bank, d->irq);
1686 //int pin = d->hwirq;
1688 GPIOAckIntr(bank->reg_base, bit);
1690 //DBG_PINCTRL("%s:irq=%d,hwirq=%d,bank->reg_base=0x%x,bit=%d\n"
1691 //, __func__,d->irq, (int)d->hwirq, (int)bank->reg_base,bit);
1694 static struct irq_chip rockchip_gpio_irq_chip = {
1695 .name = "ROCKCHIP_GPIO_CHIP",
1696 .irq_ack = rockchip_gpio_irq_ack,
1697 .irq_disable = rockchip_gpio_irq_mask,
1698 .irq_mask = rockchip_gpio_irq_mask,
1699 .irq_unmask = rockchip_gpio_irq_unmask,
1700 .irq_set_type = rockchip_gpio_irq_set_type,
1701 .irq_set_wake = rockchip_gpio_irq_set_wake,
1704 static int rockchip_gpio_irq_map(struct irq_domain *d, unsigned int irq,
1705 irq_hw_number_t hwirq)
1707 struct rockchip_pin_bank *bank = d->host_data;
1708 //struct rockchip_pinctrl *info = bank->drvdata;
1709 struct irq_data *irq_data = irq_get_irq_data(irq);
1714 printk("%s:bank=0x%p,irq=%d\n",__func__,bank, irq);
1718 irq_set_chip_and_handler(irq, &rockchip_gpio_irq_chip, handle_level_irq);
1719 irq_set_chip_data(irq, bank);
1720 set_irq_flags(irq, IRQF_VALID);
1722 irq_data->hwirq = hwirq;
1723 irq_data->irq = irq;
1725 pinctrl_dbg(bank->drvdata->dev, "%s:irq = %d, hwirq =%ld\n",__func__,irq, hwirq);
1729 static const struct irq_domain_ops rockchip_gpio_irq_ops = {
1730 .map = rockchip_gpio_irq_map,
1731 .xlate = irq_domain_xlate_twocell,
1734 static int rockchip_interrupts_register(struct platform_device *pdev,
1735 struct rockchip_pinctrl *info)
1737 struct rockchip_pin_ctrl *ctrl = info->ctrl;
1738 struct rockchip_pin_bank *bank = ctrl->pin_banks;
1739 //unsigned int clr = IRQ_NOREQUEST | IRQ_NOPROBE | IRQ_NOAUTOEN;
1742 for (i = 0; i < ctrl->nr_banks; ++i, ++bank) {
1744 dev_warn(&pdev->dev, "bank %s is not valid\n",
1749 __raw_writel(0, bank->reg_base + GPIO_INTEN);
1751 bank->drvdata = info;
1752 bank->domain = irq_domain_add_linear(bank->of_node, 32,
1753 &rockchip_gpio_irq_ops, bank);
1754 if (!bank->domain) {
1755 dev_warn(&pdev->dev, "could not initialize irq domain for bank %s\n",
1760 //if(atomic_read(&info->bank_debug_flag) == (bank->bank_num + 1))
1761 //printk("%s:bank_num=%d\n",__func__,bank->bank_num);
1763 irq_set_handler_data(bank->irq, bank);
1764 irq_set_chained_handler(bank->irq, rockchip_irq_demux);
1770 static int rockchip_gpiolib_register(struct platform_device *pdev,
1771 struct rockchip_pinctrl *info)
1773 struct rockchip_pin_ctrl *ctrl = info->ctrl;
1774 struct rockchip_pin_bank *bank = ctrl->pin_banks;
1775 struct gpio_chip *gc;
1779 for (i = 0; i < ctrl->nr_banks; ++i, ++bank) {
1781 dev_warn(&pdev->dev, "bank %s is not valid\n",
1786 bank->gpio_chip = rockchip_gpiolib_chip;
1788 gc = &bank->gpio_chip;
1789 gc->base = bank->pin_base;
1790 gc->ngpio = bank->nr_pins;
1791 gc->dev = &pdev->dev;
1792 gc->of_node = bank->of_node;
1793 gc->label = bank->name;
1795 ret = gpiochip_add(gc);
1797 dev_err(&pdev->dev, "failed to register gpio_chip %s, error code: %d\n",
1803 rockchip_interrupts_register(pdev, info);
1808 for (--i, --bank; i >= 0; --i, --bank) {
1812 if (gpiochip_remove(&bank->gpio_chip))
1813 dev_err(&pdev->dev, "gpio chip %s remove failed\n",
1814 bank->gpio_chip.label);
1819 static int rockchip_gpiolib_unregister(struct platform_device *pdev,
1820 struct rockchip_pinctrl *info)
1822 struct rockchip_pin_ctrl *ctrl = info->ctrl;
1823 struct rockchip_pin_bank *bank = ctrl->pin_banks;
1827 for (i = 0; !ret && i < ctrl->nr_banks; ++i, ++bank) {
1831 ret = gpiochip_remove(&bank->gpio_chip);
1835 dev_err(&pdev->dev, "gpio chip remove failed\n");
1840 static int rockchip_get_bank_data(struct rockchip_pin_bank *bank,
1841 struct rockchip_pinctrl *info)
1843 struct resource res;
1846 if (of_address_to_resource(bank->of_node, 0, &res)) {
1847 dev_err(info->dev, "cannot find IO resource for bank\n");
1851 bank->reg_base = devm_ioremap_resource(info->dev, &res);
1852 if (IS_ERR(bank->reg_base))
1853 return PTR_ERR(bank->reg_base);
1856 * special case, where parts of the pull setting-registers are
1857 * part of the PMU register space
1859 if (of_device_is_compatible(bank->of_node,
1860 "rockchip,rk3188-gpio-bank0")) {
1861 struct device_node *node;
1863 node = of_parse_phandle(bank->of_node->parent,
1866 if (of_address_to_resource(bank->of_node, 1, &res)) {
1867 dev_err(info->dev, "cannot find IO resource for bank\n");
1871 base = devm_ioremap_resource(info->dev, &res);
1873 return PTR_ERR(base);
1874 rockchip_regmap_config.max_register =
1875 resource_size(&res) - 4;
1876 rockchip_regmap_config.name =
1877 "rockchip,rk3188-gpio-bank0-pull";
1878 bank->regmap_pull = devm_regmap_init_mmio(info->dev,
1880 &rockchip_regmap_config);
1884 bank->irq = irq_of_parse_and_map(bank->of_node, 0);
1886 bank->clk = of_clk_get(bank->of_node, 0);
1887 if (IS_ERR(bank->clk))
1888 return PTR_ERR(bank->clk);
1890 return clk_prepare_enable(bank->clk);
1893 static const struct of_device_id rockchip_pinctrl_dt_match[];
1895 /* retrieve the soc specific data */
1896 static struct rockchip_pin_ctrl *rockchip_pinctrl_get_soc_data(
1897 struct rockchip_pinctrl *d,
1898 struct platform_device *pdev)
1900 const struct of_device_id *match;
1901 struct device_node *node = pdev->dev.of_node;
1902 struct device_node *np;
1903 struct rockchip_pin_ctrl *ctrl;
1904 struct rockchip_pin_bank *bank;
1905 int grf_offs, pmu_offs, i, j;
1907 match = of_match_node(rockchip_pinctrl_dt_match, node);
1908 ctrl = (struct rockchip_pin_ctrl *)match->data;
1910 for_each_child_of_node(node, np) {
1911 if (!of_find_property(np, "gpio-controller", NULL))
1914 bank = ctrl->pin_banks;
1915 for (i = 0; i < ctrl->nr_banks; ++i, ++bank) {
1916 if (!strcmp(bank->name, np->name)) {
1919 if (!rockchip_get_bank_data(bank, d))
1927 grf_offs = ctrl->grf_mux_offset;
1928 pmu_offs = ctrl->pmu_mux_offset;
1929 bank = ctrl->pin_banks;
1930 for (i = 0; i < ctrl->nr_banks; ++i, ++bank) {
1933 spin_lock_init(&bank->slock);
1935 bank->pin_base = ctrl->nr_pins;
1936 ctrl->nr_pins += bank->nr_pins;
1938 /* calculate iomux offsets */
1939 for (j = 0; j < 4; j++) {
1940 struct rockchip_iomux *iom = &bank->iomux[j];
1943 if (bank_pins >= bank->nr_pins)
1946 /* preset offset value, set new start value */
1947 if (iom->offset >= 0) {
1948 if (iom->type & IOMUX_SOURCE_PMU)
1949 pmu_offs = iom->offset;
1951 grf_offs = iom->offset;
1952 } else { /* set current offset */
1953 iom->offset = (iom->type & IOMUX_SOURCE_PMU) ?
1954 pmu_offs : grf_offs;
1957 pinctrl_dbg(d->dev, "bank %d, iomux %d has offset 0x%x\n",
1961 * Increase offset according to iomux width.
1962 * 4bit iomux'es are spread over two registers.
1964 inc = (iom->type & IOMUX_WIDTH_4BIT) ? 8 : 4;
1965 if (iom->type & IOMUX_SOURCE_PMU)
1977 static int rockchip_pinctrl_probe(struct platform_device *pdev)
1979 struct rockchip_pinctrl *info;
1980 struct device *dev = &pdev->dev;
1981 struct rockchip_pin_ctrl *ctrl;
1982 struct device_node *np = pdev->dev.of_node, *node;
1983 struct resource *res;
1987 if (!dev->of_node) {
1988 dev_err(dev, "device tree node not found\n");
1992 info = devm_kzalloc(dev, sizeof(struct rockchip_pinctrl), GFP_KERNEL);
1998 ctrl = rockchip_pinctrl_get_soc_data(info, pdev);
2000 dev_err(dev, "driver data not available\n");
2006 node = of_parse_phandle(np, "rockchip,grf", 0);
2008 info->regmap_base = syscon_node_to_regmap(node);
2009 if (IS_ERR(info->regmap_base))
2010 return PTR_ERR(info->regmap_base);
2012 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2013 base = devm_ioremap_resource(&pdev->dev, res);
2015 return PTR_ERR(base);
2017 rockchip_regmap_config.max_register = resource_size(res) - 4;
2018 rockchip_regmap_config.name = "rockchip,pinctrl";
2019 info->regmap_base = devm_regmap_init_mmio(&pdev->dev, base,
2020 &rockchip_regmap_config);
2022 /* to check for the old dt-bindings */
2023 info->reg_size = resource_size(res);
2025 /* Honor the old binding, with pull registers as 2nd resource */
2026 if (ctrl->type == RK3188 && info->reg_size < 0x200) {
2027 res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
2028 base = devm_ioremap_resource(&pdev->dev, res);
2030 return PTR_ERR(base);
2032 rockchip_regmap_config.max_register =
2033 resource_size(res) - 4;
2034 rockchip_regmap_config.name = "rockchip,pinctrl-pull";
2035 info->regmap_pull = devm_regmap_init_mmio(&pdev->dev,
2037 &rockchip_regmap_config);
2041 /* try to find the optional reference to the pmu syscon */
2042 node = of_parse_phandle(np, "rockchip,pmu", 0);
2044 info->regmap_pmu = syscon_node_to_regmap(node);
2045 if (IS_ERR(info->regmap_pmu))
2046 return PTR_ERR(info->regmap_pmu);
2049 ret = rockchip_gpiolib_register(pdev, info);
2053 ret = rockchip_pinctrl_register(pdev, info);
2055 rockchip_gpiolib_unregister(pdev, info);
2059 platform_set_drvdata(pdev, info);
2060 printk("%s:init ok\n",__func__);
2066 static int rockchip_pinctrl_suspend(void)
2068 struct rockchip_pinctrl *info = g_info;
2069 struct rockchip_pin_ctrl *ctrl = info->ctrl;
2070 struct rockchip_pin_bank *bank = ctrl->pin_banks;
2074 for(n=0; n<ctrl->nr_banks-1; n++)
2078 for(i=0; i<0x60; i=i+4)
2080 value = readl_relaxed(bank->reg_base + i);
2081 printk("%s:bank_num=%d,reg[0x%x+0x%x]=0x%x,bank_name=%s\n",__func__,bank->bank_num, bank->reg_base, i, value, bank->name);
2084 bank->saved_wakeup = __raw_readl(bank->reg_base + GPIO_INTEN);
2085 __raw_writel(bank->suspend_wakeup, bank->reg_base + GPIO_INTEN);
2087 if (!bank->suspend_wakeup)
2088 clk_disable_unprepare(bank->clk);
2090 //if(atomic_read(&info->bank_debug_flag) == (bank->bank_num + 1))
2091 //printk("%s:bank_num=%d, suspend_wakeup=0x%x\n"
2092 //,__func__, bank->bank_num, bank->suspend_wakeup);
2100 static void rockchip_pinctrl_resume(void)
2102 struct rockchip_pinctrl *info = g_info;
2103 struct rockchip_pin_ctrl *ctrl = info->ctrl;
2104 struct rockchip_pin_bank *bank = ctrl->pin_banks;
2108 for(n=0; n<ctrl->nr_banks-1; n++)
2112 for(i=0; i<0x60; i=i+4)
2114 u32 value = readl_relaxed(bank->reg_base + i);
2115 printk("%s:bank_num=%d,reg[0x%x+0x%x]=0x%x,bank_name=%s\n",__func__,bank->bank_num, bank->reg_base, i, value, bank->name);
2118 if (!bank->suspend_wakeup)
2119 clk_prepare_enable(bank->clk);
2121 /* keep enable for resume irq */
2122 isr = __raw_readl(bank->reg_base + GPIO_INT_STATUS);
2123 __raw_writel(bank->saved_wakeup | (bank->suspend_wakeup & isr)
2124 , bank->reg_base + GPIO_INTEN);
2126 //if(atomic_read(&info->bank_debug_flag) == (bank->bank_num + 1))
2127 //printk("%s:bank_num=%d, suspend_wakeup=0x%x\n",__func__
2128 //bank->bank_num, bank->saved_wakeup | (bank->suspend_wakeup & isr));
2136 static struct rockchip_pin_bank rk2928_pin_banks[] = {
2137 PIN_BANK(0, 32, "gpio0"),
2138 PIN_BANK(1, 32, "gpio1"),
2139 PIN_BANK(2, 32, "gpio2"),
2140 PIN_BANK(3, 32, "gpio3"),
2143 static struct rockchip_pin_ctrl rk2928_pin_ctrl = {
2144 .pin_banks = rk2928_pin_banks,
2145 .nr_banks = ARRAY_SIZE(rk2928_pin_banks),
2146 .label = "RK2928-GPIO",
2148 .grf_mux_offset = 0xa8,
2149 .pull_calc_reg = rk2928_calc_pull_reg_and_bit,
2152 static struct rockchip_pin_bank rk3066a_pin_banks[] = {
2153 PIN_BANK(0, 32, "gpio0"),
2154 PIN_BANK(1, 32, "gpio1"),
2155 PIN_BANK(2, 32, "gpio2"),
2156 PIN_BANK(3, 32, "gpio3"),
2157 PIN_BANK(4, 32, "gpio4"),
2158 PIN_BANK(6, 16, "gpio6"),
2161 static struct rockchip_pin_ctrl rk3066a_pin_ctrl = {
2162 .pin_banks = rk3066a_pin_banks,
2163 .nr_banks = ARRAY_SIZE(rk3066a_pin_banks),
2164 .label = "RK3066a-GPIO",
2166 .grf_mux_offset = 0xa8,
2167 .pull_calc_reg = rk2928_calc_pull_reg_and_bit,
2170 static struct rockchip_pin_bank rk3066b_pin_banks[] = {
2171 PIN_BANK(0, 32, "gpio0"),
2172 PIN_BANK(1, 32, "gpio1"),
2173 PIN_BANK(2, 32, "gpio2"),
2174 PIN_BANK(3, 32, "gpio3"),
2177 static struct rockchip_pin_ctrl rk3066b_pin_ctrl = {
2178 .pin_banks = rk3066b_pin_banks,
2179 .nr_banks = ARRAY_SIZE(rk3066b_pin_banks),
2180 .label = "RK3066b-GPIO",
2182 .grf_mux_offset = 0x60,
2185 static struct rockchip_pin_bank rk3188_pin_banks[] = {
2186 PIN_BANK_IOMUX_FLAGS(0, 32, "gpio0", IOMUX_GPIO_ONLY, 0, 0, 0),
2187 PIN_BANK(1, 32, "gpio1"),
2188 PIN_BANK(2, 32, "gpio2"),
2189 PIN_BANK(3, 32, "gpio3"),
2192 static struct rockchip_pin_ctrl rk3188_pin_ctrl = {
2193 .pin_banks = rk3188_pin_banks,
2194 .nr_banks = ARRAY_SIZE(rk3188_pin_banks),
2195 .label = "RK3188-GPIO",
2197 .grf_mux_offset = 0x60,
2198 .pull_calc_reg = rk3188_calc_pull_reg_and_bit,
2201 static struct rockchip_pin_bank rk3288_pin_banks[] = {
2202 PIN_BANK_IOMUX_FLAGS(0, 24, "gpio0", IOMUX_SOURCE_PMU,
2207 PIN_BANK_IOMUX_FLAGS(1, 32, "gpio1", IOMUX_UNROUTED,
2212 PIN_BANK_IOMUX_FLAGS(2, 32, "gpio2", 0, 0, 0, IOMUX_UNROUTED),
2213 PIN_BANK_IOMUX_FLAGS(3, 32, "gpio3", 0, 0, 0, IOMUX_WIDTH_4BIT),
2214 PIN_BANK_IOMUX_FLAGS(4, 32, "gpio4", IOMUX_WIDTH_4BIT,
2219 PIN_BANK_IOMUX_FLAGS(5, 32, "gpio5", IOMUX_UNROUTED,
2224 PIN_BANK_IOMUX_FLAGS(6, 32, "gpio6", 0, 0, 0, IOMUX_UNROUTED),
2225 PIN_BANK_IOMUX_FLAGS(7, 32, "gpio7", 0,
2230 PIN_BANK(8, 16, "gpio8"),
2233 static struct rockchip_pin_ctrl rk3288_pin_ctrl = {
2234 .pin_banks = rk3288_pin_banks,
2235 .nr_banks = ARRAY_SIZE(rk3288_pin_banks),
2236 .label = "RK3288-GPIO",
2238 .grf_mux_offset = 0x0,
2239 .pmu_mux_offset = 0x84,
2240 .pull_calc_reg = rk3288_calc_pull_reg_and_bit,
2243 static struct rockchip_pin_bank rk3368_pin_banks[] = {
2244 PIN_BANK_IOMUX_FLAGS(0, 32, "gpio0", IOMUX_SOURCE_PMU,
2248 PIN_BANK_IOMUX_FLAGS(1, 32, "gpio1", 0, 0, 0, 0),
2249 PIN_BANK_IOMUX_FLAGS(2, 32, "gpio2", 0, 0, 0, 0),
2250 PIN_BANK_IOMUX_FLAGS(3, 32, "gpio3", 0, 0, 0, 0),
2253 static struct rockchip_pin_ctrl rk3368_pin_ctrl = {
2254 .pin_banks = rk3368_pin_banks,
2255 .nr_banks = ARRAY_SIZE(rk3368_pin_banks),
2256 .label = "RK3368-GPIO",
2258 .grf_mux_offset = 0x0,
2259 .pmu_mux_offset = 0x0,
2260 .pull_calc_reg = rk3288_calc_pull_reg_and_bit,
2263 static const struct of_device_id rockchip_pinctrl_dt_match[] = {
2264 { .compatible = "rockchip,rk2928-pinctrl",
2265 .data = (void *)&rk2928_pin_ctrl },
2266 { .compatible = "rockchip,rk3066a-pinctrl",
2267 .data = (void *)&rk3066a_pin_ctrl },
2268 { .compatible = "rockchip,rk3066b-pinctrl",
2269 .data = (void *)&rk3066b_pin_ctrl },
2270 { .compatible = "rockchip,rk3188-pinctrl",
2271 .data = (void *)&rk3188_pin_ctrl },
2272 { .compatible = "rockchip,rk3288-pinctrl",
2273 .data = (void *)&rk3288_pin_ctrl },
2274 { .compatible = "rockchip,rk3368-pinctrl",
2275 .data = (void *)&rk3368_pin_ctrl },
2278 MODULE_DEVICE_TABLE(of, rockchip_pinctrl_dt_match);
2280 static struct platform_driver rockchip_pinctrl_driver = {
2281 .probe = rockchip_pinctrl_probe,
2283 .name = "rockchip-pinctrl",
2284 .owner = THIS_MODULE,
2285 .of_match_table = rockchip_pinctrl_dt_match,
2290 static struct syscore_ops rockchip_gpio_syscore_ops = {
2291 .suspend = rockchip_pinctrl_suspend,
2292 .resume = rockchip_pinctrl_resume,
2296 static int __init rockchip_pinctrl_drv_register(void)
2299 register_syscore_ops(&rockchip_gpio_syscore_ops);
2301 return platform_driver_register(&rockchip_pinctrl_driver);
2303 postcore_initcall(rockchip_pinctrl_drv_register);
2305 MODULE_AUTHOR("Heiko Stuebner <heiko@sntech.de>");
2306 MODULE_DESCRIPTION("Rockchip pinctrl driver");
2307 MODULE_LICENSE("GPL v2");