2 * Allwinner A1X SoCs pinctrl driver.
4 * Copyright (C) 2012 Maxime Ripard
6 * Maxime Ripard <maxime.ripard@free-electrons.com>
8 * This file is licensed under the terms of the GNU General Public
9 * License version 2. This program is licensed "as is" without any
10 * warranty of any kind, whether express or implied.
14 #include <linux/clk.h>
15 #include <linux/gpio.h>
16 #include <linux/irqdomain.h>
17 #include <linux/irqchip/chained_irq.h>
18 #include <linux/module.h>
20 #include <linux/of_address.h>
21 #include <linux/of_device.h>
22 #include <linux/of_irq.h>
23 #include <linux/pinctrl/consumer.h>
24 #include <linux/pinctrl/machine.h>
25 #include <linux/pinctrl/pinctrl.h>
26 #include <linux/pinctrl/pinconf-generic.h>
27 #include <linux/pinctrl/pinmux.h>
28 #include <linux/platform_device.h>
29 #include <linux/slab.h>
32 #include "../../gpio/gpiolib.h"
33 #include "pinctrl-sunxi.h"
35 static struct irq_chip sunxi_pinctrl_edge_irq_chip;
36 static struct irq_chip sunxi_pinctrl_level_irq_chip;
38 static struct sunxi_pinctrl_group *
39 sunxi_pinctrl_find_group_by_name(struct sunxi_pinctrl *pctl, const char *group)
43 for (i = 0; i < pctl->ngroups; i++) {
44 struct sunxi_pinctrl_group *grp = pctl->groups + i;
46 if (!strcmp(grp->name, group))
53 static struct sunxi_pinctrl_function *
54 sunxi_pinctrl_find_function_by_name(struct sunxi_pinctrl *pctl,
57 struct sunxi_pinctrl_function *func = pctl->functions;
60 for (i = 0; i < pctl->nfunctions; i++) {
64 if (!strcmp(func[i].name, name))
71 static struct sunxi_desc_function *
72 sunxi_pinctrl_desc_find_function_by_name(struct sunxi_pinctrl *pctl,
74 const char *func_name)
78 for (i = 0; i < pctl->desc->npins; i++) {
79 const struct sunxi_desc_pin *pin = pctl->desc->pins + i;
81 if (!strcmp(pin->pin.name, pin_name)) {
82 struct sunxi_desc_function *func = pin->functions;
85 if (!strcmp(func->name, func_name))
96 static struct sunxi_desc_function *
97 sunxi_pinctrl_desc_find_function_by_pin(struct sunxi_pinctrl *pctl,
99 const char *func_name)
103 for (i = 0; i < pctl->desc->npins; i++) {
104 const struct sunxi_desc_pin *pin = pctl->desc->pins + i;
106 if (pin->pin.number == pin_num) {
107 struct sunxi_desc_function *func = pin->functions;
110 if (!strcmp(func->name, func_name))
121 static int sunxi_pctrl_get_groups_count(struct pinctrl_dev *pctldev)
123 struct sunxi_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
125 return pctl->ngroups;
128 static const char *sunxi_pctrl_get_group_name(struct pinctrl_dev *pctldev,
131 struct sunxi_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
133 return pctl->groups[group].name;
136 static int sunxi_pctrl_get_group_pins(struct pinctrl_dev *pctldev,
138 const unsigned **pins,
141 struct sunxi_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
143 *pins = (unsigned *)&pctl->groups[group].pin;
149 static int sunxi_pctrl_dt_node_to_map(struct pinctrl_dev *pctldev,
150 struct device_node *node,
151 struct pinctrl_map **map,
154 struct sunxi_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
155 unsigned long *pinconfig;
156 struct property *prop;
157 const char *function;
159 int ret, nmaps, i = 0;
165 ret = of_property_read_string(node, "allwinner,function", &function);
168 "missing allwinner,function property in node %s\n",
173 nmaps = of_property_count_strings(node, "allwinner,pins") * 2;
176 "missing allwinner,pins property in node %s\n",
181 *map = kmalloc(nmaps * sizeof(struct pinctrl_map), GFP_KERNEL);
185 of_property_for_each_string(node, "allwinner,pins", prop, group) {
186 struct sunxi_pinctrl_group *grp =
187 sunxi_pinctrl_find_group_by_name(pctl, group);
188 int j = 0, configlen = 0;
191 dev_err(pctl->dev, "unknown pin %s", group);
195 if (!sunxi_pinctrl_desc_find_function_by_name(pctl,
198 dev_err(pctl->dev, "unsupported function %s on pin %s",
203 (*map)[i].type = PIN_MAP_TYPE_MUX_GROUP;
204 (*map)[i].data.mux.group = group;
205 (*map)[i].data.mux.function = function;
209 (*map)[i].type = PIN_MAP_TYPE_CONFIGS_GROUP;
210 (*map)[i].data.configs.group_or_pin = group;
212 if (of_find_property(node, "allwinner,drive", NULL))
214 if (of_find_property(node, "allwinner,pull", NULL))
217 pinconfig = kzalloc(configlen * sizeof(*pinconfig), GFP_KERNEL);
223 if (!of_property_read_u32(node, "allwinner,drive", &val)) {
224 u16 strength = (val + 1) * 10;
226 pinconf_to_config_packed(PIN_CONFIG_DRIVE_STRENGTH,
230 if (!of_property_read_u32(node, "allwinner,pull", &val)) {
231 enum pin_config_param pull = PIN_CONFIG_END;
233 pull = PIN_CONFIG_BIAS_PULL_UP;
235 pull = PIN_CONFIG_BIAS_PULL_DOWN;
236 pinconfig[j++] = pinconf_to_config_packed(pull, 0);
239 (*map)[i].data.configs.configs = pinconfig;
240 (*map)[i].data.configs.num_configs = configlen;
250 static void sunxi_pctrl_dt_free_map(struct pinctrl_dev *pctldev,
251 struct pinctrl_map *map,
256 for (i = 0; i < num_maps; i++) {
257 if (map[i].type == PIN_MAP_TYPE_CONFIGS_GROUP)
258 kfree(map[i].data.configs.configs);
264 static const struct pinctrl_ops sunxi_pctrl_ops = {
265 .dt_node_to_map = sunxi_pctrl_dt_node_to_map,
266 .dt_free_map = sunxi_pctrl_dt_free_map,
267 .get_groups_count = sunxi_pctrl_get_groups_count,
268 .get_group_name = sunxi_pctrl_get_group_name,
269 .get_group_pins = sunxi_pctrl_get_group_pins,
272 static int sunxi_pconf_group_get(struct pinctrl_dev *pctldev,
274 unsigned long *config)
276 struct sunxi_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
278 *config = pctl->groups[group].config;
283 static int sunxi_pconf_group_set(struct pinctrl_dev *pctldev,
285 unsigned long *configs,
286 unsigned num_configs)
288 struct sunxi_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
289 struct sunxi_pinctrl_group *g = &pctl->groups[group];
291 unsigned pin = g->pin - pctl->desc->pin_base;
297 spin_lock_irqsave(&pctl->lock, flags);
299 for (i = 0; i < num_configs; i++) {
300 switch (pinconf_to_config_param(configs[i])) {
301 case PIN_CONFIG_DRIVE_STRENGTH:
302 strength = pinconf_to_config_argument(configs[i]);
304 spin_unlock_irqrestore(&pctl->lock, flags);
308 * We convert from mA to what the register expects:
314 dlevel = strength / 10 - 1;
315 val = readl(pctl->membase + sunxi_dlevel_reg(pin));
316 mask = DLEVEL_PINS_MASK << sunxi_dlevel_offset(pin);
318 | dlevel << sunxi_dlevel_offset(pin),
319 pctl->membase + sunxi_dlevel_reg(pin));
321 case PIN_CONFIG_BIAS_PULL_UP:
322 val = readl(pctl->membase + sunxi_pull_reg(pin));
323 mask = PULL_PINS_MASK << sunxi_pull_offset(pin);
324 writel((val & ~mask) | 1 << sunxi_pull_offset(pin),
325 pctl->membase + sunxi_pull_reg(pin));
327 case PIN_CONFIG_BIAS_PULL_DOWN:
328 val = readl(pctl->membase + sunxi_pull_reg(pin));
329 mask = PULL_PINS_MASK << sunxi_pull_offset(pin);
330 writel((val & ~mask) | 2 << sunxi_pull_offset(pin),
331 pctl->membase + sunxi_pull_reg(pin));
336 /* cache the config value */
337 g->config = configs[i];
338 } /* for each config */
340 spin_unlock_irqrestore(&pctl->lock, flags);
345 static const struct pinconf_ops sunxi_pconf_ops = {
346 .pin_config_group_get = sunxi_pconf_group_get,
347 .pin_config_group_set = sunxi_pconf_group_set,
350 static int sunxi_pmx_get_funcs_cnt(struct pinctrl_dev *pctldev)
352 struct sunxi_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
354 return pctl->nfunctions;
357 static const char *sunxi_pmx_get_func_name(struct pinctrl_dev *pctldev,
360 struct sunxi_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
362 return pctl->functions[function].name;
365 static int sunxi_pmx_get_func_groups(struct pinctrl_dev *pctldev,
367 const char * const **groups,
368 unsigned * const num_groups)
370 struct sunxi_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
372 *groups = pctl->functions[function].groups;
373 *num_groups = pctl->functions[function].ngroups;
378 static void sunxi_pmx_set(struct pinctrl_dev *pctldev,
382 struct sunxi_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
386 spin_lock_irqsave(&pctl->lock, flags);
388 pin -= pctl->desc->pin_base;
389 val = readl(pctl->membase + sunxi_mux_reg(pin));
390 mask = MUX_PINS_MASK << sunxi_mux_offset(pin);
391 writel((val & ~mask) | config << sunxi_mux_offset(pin),
392 pctl->membase + sunxi_mux_reg(pin));
394 spin_unlock_irqrestore(&pctl->lock, flags);
397 static int sunxi_pmx_set_mux(struct pinctrl_dev *pctldev,
401 struct sunxi_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
402 struct sunxi_pinctrl_group *g = pctl->groups + group;
403 struct sunxi_pinctrl_function *func = pctl->functions + function;
404 struct sunxi_desc_function *desc =
405 sunxi_pinctrl_desc_find_function_by_name(pctl,
412 sunxi_pmx_set(pctldev, g->pin, desc->muxval);
418 sunxi_pmx_gpio_set_direction(struct pinctrl_dev *pctldev,
419 struct pinctrl_gpio_range *range,
423 struct sunxi_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
424 struct sunxi_desc_function *desc;
432 desc = sunxi_pinctrl_desc_find_function_by_pin(pctl, offset, func);
436 sunxi_pmx_set(pctldev, offset, desc->muxval);
441 static const struct pinmux_ops sunxi_pmx_ops = {
442 .get_functions_count = sunxi_pmx_get_funcs_cnt,
443 .get_function_name = sunxi_pmx_get_func_name,
444 .get_function_groups = sunxi_pmx_get_func_groups,
445 .set_mux = sunxi_pmx_set_mux,
446 .gpio_set_direction = sunxi_pmx_gpio_set_direction,
449 static int sunxi_pinctrl_gpio_direction_input(struct gpio_chip *chip,
452 return pinctrl_gpio_direction_input(chip->base + offset);
455 static int sunxi_pinctrl_gpio_get(struct gpio_chip *chip, unsigned offset)
457 struct sunxi_pinctrl *pctl = dev_get_drvdata(chip->parent);
458 u32 reg = sunxi_data_reg(offset);
459 u8 index = sunxi_data_offset(offset);
460 u32 set_mux = pctl->desc->irq_read_needs_mux &&
461 test_bit(FLAG_USED_AS_IRQ, &chip->desc[offset].flags);
465 sunxi_pmx_set(pctl->pctl_dev, offset, SUN4I_FUNC_INPUT);
467 val = (readl(pctl->membase + reg) >> index) & DATA_PINS_MASK;
470 sunxi_pmx_set(pctl->pctl_dev, offset, SUN4I_FUNC_IRQ);
475 static void sunxi_pinctrl_gpio_set(struct gpio_chip *chip,
476 unsigned offset, int value)
478 struct sunxi_pinctrl *pctl = dev_get_drvdata(chip->parent);
479 u32 reg = sunxi_data_reg(offset);
480 u8 index = sunxi_data_offset(offset);
484 spin_lock_irqsave(&pctl->lock, flags);
486 regval = readl(pctl->membase + reg);
489 regval |= BIT(index);
491 regval &= ~(BIT(index));
493 writel(regval, pctl->membase + reg);
495 spin_unlock_irqrestore(&pctl->lock, flags);
498 static int sunxi_pinctrl_gpio_direction_output(struct gpio_chip *chip,
499 unsigned offset, int value)
501 sunxi_pinctrl_gpio_set(chip, offset, value);
502 return pinctrl_gpio_direction_output(chip->base + offset);
505 static int sunxi_pinctrl_gpio_of_xlate(struct gpio_chip *gc,
506 const struct of_phandle_args *gpiospec,
511 base = PINS_PER_BANK * gpiospec->args[0];
512 pin = base + gpiospec->args[1];
518 *flags = gpiospec->args[2];
523 static int sunxi_pinctrl_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
525 struct sunxi_pinctrl *pctl = dev_get_drvdata(chip->parent);
526 struct sunxi_desc_function *desc;
527 unsigned pinnum = pctl->desc->pin_base + offset;
530 if (offset >= chip->ngpio)
533 desc = sunxi_pinctrl_desc_find_function_by_pin(pctl, pinnum, "irq");
537 irqnum = desc->irqbank * IRQ_PER_BANK + desc->irqnum;
539 dev_dbg(chip->parent, "%s: request IRQ for GPIO %d, return %d\n",
540 chip->label, offset + chip->base, irqnum);
542 return irq_find_mapping(pctl->domain, irqnum);
545 static int sunxi_pinctrl_irq_request_resources(struct irq_data *d)
547 struct sunxi_pinctrl *pctl = irq_data_get_irq_chip_data(d);
548 struct sunxi_desc_function *func;
551 func = sunxi_pinctrl_desc_find_function_by_pin(pctl,
552 pctl->irq_array[d->hwirq], "irq");
556 ret = gpiochip_lock_as_irq(pctl->chip,
557 pctl->irq_array[d->hwirq] - pctl->desc->pin_base);
559 dev_err(pctl->dev, "unable to lock HW IRQ %lu for IRQ\n",
564 /* Change muxing to INT mode */
565 sunxi_pmx_set(pctl->pctl_dev, pctl->irq_array[d->hwirq], func->muxval);
570 static void sunxi_pinctrl_irq_release_resources(struct irq_data *d)
572 struct sunxi_pinctrl *pctl = irq_data_get_irq_chip_data(d);
574 gpiochip_unlock_as_irq(pctl->chip,
575 pctl->irq_array[d->hwirq] - pctl->desc->pin_base);
578 static int sunxi_pinctrl_irq_set_type(struct irq_data *d, unsigned int type)
580 struct sunxi_pinctrl *pctl = irq_data_get_irq_chip_data(d);
581 u32 reg = sunxi_irq_cfg_reg(d->hwirq);
582 u8 index = sunxi_irq_cfg_offset(d->hwirq);
588 case IRQ_TYPE_EDGE_RISING:
589 mode = IRQ_EDGE_RISING;
591 case IRQ_TYPE_EDGE_FALLING:
592 mode = IRQ_EDGE_FALLING;
594 case IRQ_TYPE_EDGE_BOTH:
595 mode = IRQ_EDGE_BOTH;
597 case IRQ_TYPE_LEVEL_HIGH:
598 mode = IRQ_LEVEL_HIGH;
600 case IRQ_TYPE_LEVEL_LOW:
601 mode = IRQ_LEVEL_LOW;
607 spin_lock_irqsave(&pctl->lock, flags);
609 if (type & IRQ_TYPE_LEVEL_MASK)
610 irq_set_chip_handler_name_locked(d, &sunxi_pinctrl_level_irq_chip,
611 handle_fasteoi_irq, NULL);
613 irq_set_chip_handler_name_locked(d, &sunxi_pinctrl_edge_irq_chip,
614 handle_edge_irq, NULL);
616 regval = readl(pctl->membase + reg);
617 regval &= ~(IRQ_CFG_IRQ_MASK << index);
618 writel(regval | (mode << index), pctl->membase + reg);
620 spin_unlock_irqrestore(&pctl->lock, flags);
625 static void sunxi_pinctrl_irq_ack(struct irq_data *d)
627 struct sunxi_pinctrl *pctl = irq_data_get_irq_chip_data(d);
628 u32 status_reg = sunxi_irq_status_reg(d->hwirq);
629 u8 status_idx = sunxi_irq_status_offset(d->hwirq);
632 writel(1 << status_idx, pctl->membase + status_reg);
635 static void sunxi_pinctrl_irq_mask(struct irq_data *d)
637 struct sunxi_pinctrl *pctl = irq_data_get_irq_chip_data(d);
638 u32 reg = sunxi_irq_ctrl_reg(d->hwirq);
639 u8 idx = sunxi_irq_ctrl_offset(d->hwirq);
643 spin_lock_irqsave(&pctl->lock, flags);
646 val = readl(pctl->membase + reg);
647 writel(val & ~(1 << idx), pctl->membase + reg);
649 spin_unlock_irqrestore(&pctl->lock, flags);
652 static void sunxi_pinctrl_irq_unmask(struct irq_data *d)
654 struct sunxi_pinctrl *pctl = irq_data_get_irq_chip_data(d);
655 u32 reg = sunxi_irq_ctrl_reg(d->hwirq);
656 u8 idx = sunxi_irq_ctrl_offset(d->hwirq);
660 spin_lock_irqsave(&pctl->lock, flags);
663 val = readl(pctl->membase + reg);
664 writel(val | (1 << idx), pctl->membase + reg);
666 spin_unlock_irqrestore(&pctl->lock, flags);
669 static void sunxi_pinctrl_irq_ack_unmask(struct irq_data *d)
671 sunxi_pinctrl_irq_ack(d);
672 sunxi_pinctrl_irq_unmask(d);
675 static struct irq_chip sunxi_pinctrl_edge_irq_chip = {
676 .name = "sunxi_pio_edge",
677 .irq_ack = sunxi_pinctrl_irq_ack,
678 .irq_mask = sunxi_pinctrl_irq_mask,
679 .irq_unmask = sunxi_pinctrl_irq_unmask,
680 .irq_request_resources = sunxi_pinctrl_irq_request_resources,
681 .irq_release_resources = sunxi_pinctrl_irq_release_resources,
682 .irq_set_type = sunxi_pinctrl_irq_set_type,
683 .flags = IRQCHIP_SKIP_SET_WAKE,
686 static struct irq_chip sunxi_pinctrl_level_irq_chip = {
687 .name = "sunxi_pio_level",
688 .irq_eoi = sunxi_pinctrl_irq_ack,
689 .irq_mask = sunxi_pinctrl_irq_mask,
690 .irq_unmask = sunxi_pinctrl_irq_unmask,
691 /* Define irq_enable / disable to avoid spurious irqs for drivers
692 * using these to suppress irqs while they clear the irq source */
693 .irq_enable = sunxi_pinctrl_irq_ack_unmask,
694 .irq_disable = sunxi_pinctrl_irq_mask,
695 .irq_request_resources = sunxi_pinctrl_irq_request_resources,
696 .irq_release_resources = sunxi_pinctrl_irq_release_resources,
697 .irq_set_type = sunxi_pinctrl_irq_set_type,
698 .flags = IRQCHIP_SKIP_SET_WAKE | IRQCHIP_EOI_THREADED |
699 IRQCHIP_EOI_IF_HANDLED,
702 static int sunxi_pinctrl_irq_of_xlate(struct irq_domain *d,
703 struct device_node *node,
705 unsigned int intsize,
706 unsigned long *out_hwirq,
707 unsigned int *out_type)
709 struct sunxi_pinctrl *pctl = d->host_data;
710 struct sunxi_desc_function *desc;
716 base = PINS_PER_BANK * intspec[0];
717 pin = pctl->desc->pin_base + base + intspec[1];
719 desc = sunxi_pinctrl_desc_find_function_by_pin(pctl, pin, "irq");
723 *out_hwirq = desc->irqbank * PINS_PER_BANK + desc->irqnum;
724 *out_type = intspec[2];
729 static struct irq_domain_ops sunxi_pinctrl_irq_domain_ops = {
730 .xlate = sunxi_pinctrl_irq_of_xlate,
733 static void sunxi_pinctrl_irq_handler(struct irq_desc *desc)
735 unsigned int irq = irq_desc_get_irq(desc);
736 struct irq_chip *chip = irq_desc_get_chip(desc);
737 struct sunxi_pinctrl *pctl = irq_desc_get_handler_data(desc);
738 unsigned long bank, reg, val;
740 for (bank = 0; bank < pctl->desc->irq_banks; bank++)
741 if (irq == pctl->irq[bank])
744 if (bank == pctl->desc->irq_banks)
747 reg = sunxi_irq_status_reg_from_bank(bank);
748 val = readl(pctl->membase + reg);
753 chained_irq_enter(chip, desc);
754 for_each_set_bit(irqoffset, &val, IRQ_PER_BANK) {
755 int pin_irq = irq_find_mapping(pctl->domain,
756 bank * IRQ_PER_BANK + irqoffset);
757 generic_handle_irq(pin_irq);
759 chained_irq_exit(chip, desc);
763 static int sunxi_pinctrl_add_function(struct sunxi_pinctrl *pctl,
766 struct sunxi_pinctrl_function *func = pctl->functions;
769 /* function already there */
770 if (strcmp(func->name, name) == 0) {
785 static int sunxi_pinctrl_build_state(struct platform_device *pdev)
787 struct sunxi_pinctrl *pctl = platform_get_drvdata(pdev);
790 pctl->ngroups = pctl->desc->npins;
792 /* Allocate groups */
793 pctl->groups = devm_kzalloc(&pdev->dev,
794 pctl->ngroups * sizeof(*pctl->groups),
799 for (i = 0; i < pctl->desc->npins; i++) {
800 const struct sunxi_desc_pin *pin = pctl->desc->pins + i;
801 struct sunxi_pinctrl_group *group = pctl->groups + i;
803 group->name = pin->pin.name;
804 group->pin = pin->pin.number;
808 * We suppose that we won't have any more functions than pins,
809 * we'll reallocate that later anyway
811 pctl->functions = devm_kzalloc(&pdev->dev,
812 pctl->desc->npins * sizeof(*pctl->functions),
814 if (!pctl->functions)
817 /* Count functions and their associated groups */
818 for (i = 0; i < pctl->desc->npins; i++) {
819 const struct sunxi_desc_pin *pin = pctl->desc->pins + i;
820 struct sunxi_desc_function *func = pin->functions;
823 /* Create interrupt mapping while we're at it */
824 if (!strcmp(func->name, "irq")) {
825 int irqnum = func->irqnum + func->irqbank * IRQ_PER_BANK;
826 pctl->irq_array[irqnum] = pin->pin.number;
829 sunxi_pinctrl_add_function(pctl, func->name);
834 pctl->functions = krealloc(pctl->functions,
835 pctl->nfunctions * sizeof(*pctl->functions),
838 for (i = 0; i < pctl->desc->npins; i++) {
839 const struct sunxi_desc_pin *pin = pctl->desc->pins + i;
840 struct sunxi_desc_function *func = pin->functions;
843 struct sunxi_pinctrl_function *func_item;
844 const char **func_grp;
846 func_item = sunxi_pinctrl_find_function_by_name(pctl,
851 if (!func_item->groups) {
853 devm_kzalloc(&pdev->dev,
854 func_item->ngroups * sizeof(*func_item->groups),
856 if (!func_item->groups)
860 func_grp = func_item->groups;
864 *func_grp = pin->pin.name;
872 int sunxi_pinctrl_init(struct platform_device *pdev,
873 const struct sunxi_pinctrl_desc *desc)
875 struct device_node *node = pdev->dev.of_node;
876 struct pinctrl_desc *pctrl_desc;
877 struct pinctrl_pin_desc *pins;
878 struct sunxi_pinctrl *pctl;
879 struct resource *res;
880 int i, ret, last_pin;
883 pctl = devm_kzalloc(&pdev->dev, sizeof(*pctl), GFP_KERNEL);
886 platform_set_drvdata(pdev, pctl);
888 spin_lock_init(&pctl->lock);
890 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
891 pctl->membase = devm_ioremap_resource(&pdev->dev, res);
892 if (IS_ERR(pctl->membase))
893 return PTR_ERR(pctl->membase);
895 pctl->dev = &pdev->dev;
898 pctl->irq_array = devm_kcalloc(&pdev->dev,
899 IRQ_PER_BANK * pctl->desc->irq_banks,
900 sizeof(*pctl->irq_array),
902 if (!pctl->irq_array)
905 ret = sunxi_pinctrl_build_state(pdev);
907 dev_err(&pdev->dev, "dt probe failed: %d\n", ret);
911 pins = devm_kzalloc(&pdev->dev,
912 pctl->desc->npins * sizeof(*pins),
917 for (i = 0; i < pctl->desc->npins; i++)
918 pins[i] = pctl->desc->pins[i].pin;
920 pctrl_desc = devm_kzalloc(&pdev->dev,
926 pctrl_desc->name = dev_name(&pdev->dev);
927 pctrl_desc->owner = THIS_MODULE;
928 pctrl_desc->pins = pins;
929 pctrl_desc->npins = pctl->desc->npins;
930 pctrl_desc->confops = &sunxi_pconf_ops;
931 pctrl_desc->pctlops = &sunxi_pctrl_ops;
932 pctrl_desc->pmxops = &sunxi_pmx_ops;
934 pctl->pctl_dev = pinctrl_register(pctrl_desc,
936 if (IS_ERR(pctl->pctl_dev)) {
937 dev_err(&pdev->dev, "couldn't register pinctrl driver\n");
938 return PTR_ERR(pctl->pctl_dev);
941 pctl->chip = devm_kzalloc(&pdev->dev, sizeof(*pctl->chip), GFP_KERNEL);
947 last_pin = pctl->desc->pins[pctl->desc->npins - 1].pin.number;
948 pctl->chip->owner = THIS_MODULE;
949 pctl->chip->request = gpiochip_generic_request,
950 pctl->chip->free = gpiochip_generic_free,
951 pctl->chip->direction_input = sunxi_pinctrl_gpio_direction_input,
952 pctl->chip->direction_output = sunxi_pinctrl_gpio_direction_output,
953 pctl->chip->get = sunxi_pinctrl_gpio_get,
954 pctl->chip->set = sunxi_pinctrl_gpio_set,
955 pctl->chip->of_xlate = sunxi_pinctrl_gpio_of_xlate,
956 pctl->chip->to_irq = sunxi_pinctrl_gpio_to_irq,
957 pctl->chip->of_gpio_n_cells = 3,
958 pctl->chip->can_sleep = false,
959 pctl->chip->ngpio = round_up(last_pin, PINS_PER_BANK) -
960 pctl->desc->pin_base;
961 pctl->chip->label = dev_name(&pdev->dev);
962 pctl->chip->parent = &pdev->dev;
963 pctl->chip->base = pctl->desc->pin_base;
965 ret = gpiochip_add(pctl->chip);
969 for (i = 0; i < pctl->desc->npins; i++) {
970 const struct sunxi_desc_pin *pin = pctl->desc->pins + i;
972 ret = gpiochip_add_pin_range(pctl->chip, dev_name(&pdev->dev),
973 pin->pin.number - pctl->desc->pin_base,
979 clk = devm_clk_get(&pdev->dev, NULL);
985 ret = clk_prepare_enable(clk);
989 pctl->irq = devm_kcalloc(&pdev->dev,
990 pctl->desc->irq_banks,
998 for (i = 0; i < pctl->desc->irq_banks; i++) {
999 pctl->irq[i] = platform_get_irq(pdev, i);
1000 if (pctl->irq[i] < 0) {
1006 pctl->domain = irq_domain_add_linear(node,
1007 pctl->desc->irq_banks * IRQ_PER_BANK,
1008 &sunxi_pinctrl_irq_domain_ops,
1010 if (!pctl->domain) {
1011 dev_err(&pdev->dev, "Couldn't register IRQ domain\n");
1016 for (i = 0; i < (pctl->desc->irq_banks * IRQ_PER_BANK); i++) {
1017 int irqno = irq_create_mapping(pctl->domain, i);
1019 irq_set_chip_and_handler(irqno, &sunxi_pinctrl_edge_irq_chip,
1021 irq_set_chip_data(irqno, pctl);
1024 for (i = 0; i < pctl->desc->irq_banks; i++) {
1025 /* Mask and clear all IRQs before registering a handler */
1026 writel(0, pctl->membase + sunxi_irq_ctrl_reg_from_bank(i));
1028 pctl->membase + sunxi_irq_status_reg_from_bank(i));
1030 irq_set_chained_handler_and_data(pctl->irq[i],
1031 sunxi_pinctrl_irq_handler,
1035 dev_info(&pdev->dev, "initialized sunXi PIO driver\n");
1040 clk_disable_unprepare(clk);
1042 gpiochip_remove(pctl->chip);
1044 pinctrl_unregister(pctl->pctl_dev);