2 * pinmux driver for CSR SiRFprimaII
4 * Copyright (c) 2011 - 2014 Cambridge Silicon Radio Limited, a CSR plc group
7 * Licensed under GPLv2 or later.
10 #include <linux/init.h>
11 #include <linux/module.h>
12 #include <linux/irq.h>
13 #include <linux/platform_device.h>
15 #include <linux/slab.h>
16 #include <linux/err.h>
17 #include <linux/irqdomain.h>
18 #include <linux/irqchip/chained_irq.h>
19 #include <linux/pinctrl/pinctrl.h>
20 #include <linux/pinctrl/pinmux.h>
21 #include <linux/pinctrl/consumer.h>
22 #include <linux/pinctrl/machine.h>
24 #include <linux/of_address.h>
25 #include <linux/of_device.h>
26 #include <linux/of_platform.h>
27 #include <linux/bitops.h>
28 #include <linux/gpio.h>
29 #include <linux/of_gpio.h>
30 #include <asm/mach/irq.h>
32 #include "pinctrl-sirf.h"
34 #define DRIVER_NAME "pinmux-sirf"
36 struct sirfsoc_gpio_bank {
37 struct of_mm_gpio_chip chip;
38 struct irq_domain *domain;
42 bool is_marco; /* for marco, some registers are different with prima2 */
45 static struct sirfsoc_gpio_bank sgpio_bank[SIRFSOC_GPIO_NO_OF_BANKS];
46 static DEFINE_SPINLOCK(sgpio_lock);
48 static struct sirfsoc_pin_group *sirfsoc_pin_groups;
49 static int sirfsoc_pingrp_cnt;
51 static int sirfsoc_get_groups_count(struct pinctrl_dev *pctldev)
53 return sirfsoc_pingrp_cnt;
56 static const char *sirfsoc_get_group_name(struct pinctrl_dev *pctldev,
59 return sirfsoc_pin_groups[selector].name;
62 static int sirfsoc_get_group_pins(struct pinctrl_dev *pctldev, unsigned selector,
63 const unsigned **pins,
66 *pins = sirfsoc_pin_groups[selector].pins;
67 *num_pins = sirfsoc_pin_groups[selector].num_pins;
71 static void sirfsoc_pin_dbg_show(struct pinctrl_dev *pctldev, struct seq_file *s,
74 seq_printf(s, " " DRIVER_NAME);
77 static int sirfsoc_dt_node_to_map(struct pinctrl_dev *pctldev,
78 struct device_node *np_config,
79 struct pinctrl_map **map, unsigned *num_maps)
81 struct sirfsoc_pmx *spmx = pinctrl_dev_get_drvdata(pctldev);
82 struct device_node *np;
83 struct property *prop;
84 const char *function, *group;
85 int ret, index = 0, count = 0;
87 /* calculate number of maps required */
88 for_each_child_of_node(np_config, np) {
89 ret = of_property_read_string(np, "sirf,function", &function);
93 ret = of_property_count_strings(np, "sirf,pins");
101 dev_err(spmx->dev, "No child nodes passed via DT\n");
105 *map = kzalloc(sizeof(**map) * count, GFP_KERNEL);
109 for_each_child_of_node(np_config, np) {
110 of_property_read_string(np, "sirf,function", &function);
111 of_property_for_each_string(np, "sirf,pins", prop, group) {
112 (*map)[index].type = PIN_MAP_TYPE_MUX_GROUP;
113 (*map)[index].data.mux.group = group;
114 (*map)[index].data.mux.function = function;
124 static void sirfsoc_dt_free_map(struct pinctrl_dev *pctldev,
125 struct pinctrl_map *map, unsigned num_maps)
130 static struct pinctrl_ops sirfsoc_pctrl_ops = {
131 .get_groups_count = sirfsoc_get_groups_count,
132 .get_group_name = sirfsoc_get_group_name,
133 .get_group_pins = sirfsoc_get_group_pins,
134 .pin_dbg_show = sirfsoc_pin_dbg_show,
135 .dt_node_to_map = sirfsoc_dt_node_to_map,
136 .dt_free_map = sirfsoc_dt_free_map,
139 static struct sirfsoc_pmx_func *sirfsoc_pmx_functions;
140 static int sirfsoc_pmxfunc_cnt;
142 static void sirfsoc_pinmux_endisable(struct sirfsoc_pmx *spmx, unsigned selector,
146 const struct sirfsoc_padmux *mux = sirfsoc_pmx_functions[selector].padmux;
147 const struct sirfsoc_muxmask *mask = mux->muxmask;
149 for (i = 0; i < mux->muxmask_counts; i++) {
151 if (!spmx->is_marco) {
152 muxval = readl(spmx->gpio_virtbase + SIRFSOC_GPIO_PAD_EN(mask[i].group));
154 muxval = muxval & ~mask[i].mask;
156 muxval = muxval | mask[i].mask;
157 writel(muxval, spmx->gpio_virtbase + SIRFSOC_GPIO_PAD_EN(mask[i].group));
160 writel(mask[i].mask, spmx->gpio_virtbase +
161 SIRFSOC_GPIO_PAD_EN_CLR(mask[i].group));
163 writel(mask[i].mask, spmx->gpio_virtbase +
164 SIRFSOC_GPIO_PAD_EN(mask[i].group));
168 if (mux->funcmask && enable) {
172 readl(spmx->rsc_virtbase + mux->ctrlreg);
174 (func_en_val & ~mux->funcmask) | (mux->funcval);
175 writel(func_en_val, spmx->rsc_virtbase + mux->ctrlreg);
179 static int sirfsoc_pinmux_enable(struct pinctrl_dev *pmxdev, unsigned selector,
182 struct sirfsoc_pmx *spmx;
184 spmx = pinctrl_dev_get_drvdata(pmxdev);
185 sirfsoc_pinmux_endisable(spmx, selector, true);
190 static void sirfsoc_pinmux_disable(struct pinctrl_dev *pmxdev, unsigned selector,
193 struct sirfsoc_pmx *spmx;
195 spmx = pinctrl_dev_get_drvdata(pmxdev);
196 sirfsoc_pinmux_endisable(spmx, selector, false);
199 static int sirfsoc_pinmux_get_funcs_count(struct pinctrl_dev *pmxdev)
201 return sirfsoc_pmxfunc_cnt;
204 static const char *sirfsoc_pinmux_get_func_name(struct pinctrl_dev *pctldev,
207 return sirfsoc_pmx_functions[selector].name;
210 static int sirfsoc_pinmux_get_groups(struct pinctrl_dev *pctldev, unsigned selector,
211 const char * const **groups,
212 unsigned * const num_groups)
214 *groups = sirfsoc_pmx_functions[selector].groups;
215 *num_groups = sirfsoc_pmx_functions[selector].num_groups;
219 static int sirfsoc_pinmux_request_gpio(struct pinctrl_dev *pmxdev,
220 struct pinctrl_gpio_range *range, unsigned offset)
222 struct sirfsoc_pmx *spmx;
224 int group = range->id;
228 spmx = pinctrl_dev_get_drvdata(pmxdev);
230 if (!spmx->is_marco) {
231 muxval = readl(spmx->gpio_virtbase + SIRFSOC_GPIO_PAD_EN(group));
232 muxval = muxval | (1 << (offset - range->pin_base));
233 writel(muxval, spmx->gpio_virtbase + SIRFSOC_GPIO_PAD_EN(group));
235 writel(1 << (offset - range->pin_base), spmx->gpio_virtbase +
236 SIRFSOC_GPIO_PAD_EN(group));
242 static struct pinmux_ops sirfsoc_pinmux_ops = {
243 .enable = sirfsoc_pinmux_enable,
244 .disable = sirfsoc_pinmux_disable,
245 .get_functions_count = sirfsoc_pinmux_get_funcs_count,
246 .get_function_name = sirfsoc_pinmux_get_func_name,
247 .get_function_groups = sirfsoc_pinmux_get_groups,
248 .gpio_request_enable = sirfsoc_pinmux_request_gpio,
251 static struct pinctrl_desc sirfsoc_pinmux_desc = {
253 .pctlops = &sirfsoc_pctrl_ops,
254 .pmxops = &sirfsoc_pinmux_ops,
255 .owner = THIS_MODULE,
259 * Todo: bind irq_chip to every pinctrl_gpio_range
261 static struct pinctrl_gpio_range sirfsoc_gpio_ranges[] = {
263 .name = "sirfsoc-gpio*",
269 .name = "sirfsoc-gpio*",
275 .name = "sirfsoc-gpio*",
281 .name = "sirfsoc-gpio*",
289 static void __iomem *sirfsoc_rsc_of_iomap(void)
291 const struct of_device_id rsc_ids[] = {
292 { .compatible = "sirf,prima2-rsc" },
293 { .compatible = "sirf,marco-rsc" },
296 struct device_node *np;
298 np = of_find_matching_node(NULL, rsc_ids);
300 panic("unable to find compatible rsc node in dtb\n");
302 return of_iomap(np, 0);
305 static int sirfsoc_gpio_of_xlate(struct gpio_chip *gc,
306 const struct of_phandle_args *gpiospec,
309 if (gpiospec->args[0] > SIRFSOC_GPIO_NO_OF_BANKS * SIRFSOC_GPIO_BANK_SIZE)
312 if (gc != &sgpio_bank[gpiospec->args[0] / SIRFSOC_GPIO_BANK_SIZE].chip.gc)
316 *flags = gpiospec->args[1];
318 return gpiospec->args[0] % SIRFSOC_GPIO_BANK_SIZE;
321 static const struct of_device_id pinmux_ids[] = {
322 { .compatible = "sirf,prima2-pinctrl", .data = &prima2_pinctrl_data, },
323 { .compatible = "sirf,atlas6-pinctrl", .data = &atlas6_pinctrl_data, },
324 { .compatible = "sirf,marco-pinctrl", .data = &prima2_pinctrl_data, },
328 static int sirfsoc_pinmux_probe(struct platform_device *pdev)
331 struct sirfsoc_pmx *spmx;
332 struct device_node *np = pdev->dev.of_node;
333 const struct sirfsoc_pinctrl_data *pdata;
336 /* Create state holders etc for this driver */
337 spmx = devm_kzalloc(&pdev->dev, sizeof(*spmx), GFP_KERNEL);
341 spmx->dev = &pdev->dev;
343 platform_set_drvdata(pdev, spmx);
345 spmx->gpio_virtbase = of_iomap(np, 0);
346 if (!spmx->gpio_virtbase) {
347 dev_err(&pdev->dev, "can't map gpio registers\n");
351 spmx->rsc_virtbase = sirfsoc_rsc_of_iomap();
352 if (!spmx->rsc_virtbase) {
354 dev_err(&pdev->dev, "can't map rsc registers\n");
355 goto out_no_rsc_remap;
358 if (of_device_is_compatible(np, "sirf,marco-pinctrl"))
361 pdata = of_match_node(pinmux_ids, np)->data;
362 sirfsoc_pin_groups = pdata->grps;
363 sirfsoc_pingrp_cnt = pdata->grps_cnt;
364 sirfsoc_pmx_functions = pdata->funcs;
365 sirfsoc_pmxfunc_cnt = pdata->funcs_cnt;
366 sirfsoc_pinmux_desc.pins = pdata->pads;
367 sirfsoc_pinmux_desc.npins = pdata->pads_cnt;
370 /* Now register the pin controller and all pins it handles */
371 spmx->pmx = pinctrl_register(&sirfsoc_pinmux_desc, &pdev->dev, spmx);
373 dev_err(&pdev->dev, "could not register SIRFSOC pinmux driver\n");
378 for (i = 0; i < ARRAY_SIZE(sirfsoc_gpio_ranges); i++) {
379 sirfsoc_gpio_ranges[i].gc = &sgpio_bank[i].chip.gc;
380 pinctrl_add_gpio_range(spmx->pmx, &sirfsoc_gpio_ranges[i]);
383 dev_info(&pdev->dev, "initialized SIRFSOC pinmux driver\n");
388 iounmap(spmx->rsc_virtbase);
390 iounmap(spmx->gpio_virtbase);
394 #ifdef CONFIG_PM_SLEEP
395 static int sirfsoc_pinmux_suspend_noirq(struct device *dev)
398 struct sirfsoc_pmx *spmx = dev_get_drvdata(dev);
400 for (i = 0; i < SIRFSOC_GPIO_NO_OF_BANKS; i++) {
401 for (j = 0; j < SIRFSOC_GPIO_BANK_SIZE; j++) {
402 spmx->gpio_regs[i][j] = readl(spmx->gpio_virtbase +
403 SIRFSOC_GPIO_CTRL(i, j));
405 spmx->ints_regs[i] = readl(spmx->gpio_virtbase +
406 SIRFSOC_GPIO_INT_STATUS(i));
407 spmx->paden_regs[i] = readl(spmx->gpio_virtbase +
408 SIRFSOC_GPIO_PAD_EN(i));
410 spmx->dspen_regs = readl(spmx->gpio_virtbase + SIRFSOC_GPIO_DSP_EN0);
412 for (i = 0; i < 3; i++)
413 spmx->rsc_regs[i] = readl(spmx->rsc_virtbase + 4 * i);
418 static int sirfsoc_pinmux_resume_noirq(struct device *dev)
421 struct sirfsoc_pmx *spmx = dev_get_drvdata(dev);
423 for (i = 0; i < SIRFSOC_GPIO_NO_OF_BANKS; i++) {
424 for (j = 0; j < SIRFSOC_GPIO_BANK_SIZE; j++) {
425 writel(spmx->gpio_regs[i][j], spmx->gpio_virtbase +
426 SIRFSOC_GPIO_CTRL(i, j));
428 writel(spmx->ints_regs[i], spmx->gpio_virtbase +
429 SIRFSOC_GPIO_INT_STATUS(i));
430 writel(spmx->paden_regs[i], spmx->gpio_virtbase +
431 SIRFSOC_GPIO_PAD_EN(i));
433 writel(spmx->dspen_regs, spmx->gpio_virtbase + SIRFSOC_GPIO_DSP_EN0);
435 for (i = 0; i < 3; i++)
436 writel(spmx->rsc_regs[i], spmx->rsc_virtbase + 4 * i);
441 static const struct dev_pm_ops sirfsoc_pinmux_pm_ops = {
442 .suspend_noirq = sirfsoc_pinmux_suspend_noirq,
443 .resume_noirq = sirfsoc_pinmux_resume_noirq,
444 .freeze_noirq = sirfsoc_pinmux_suspend_noirq,
445 .restore_noirq = sirfsoc_pinmux_resume_noirq,
449 static struct platform_driver sirfsoc_pinmux_driver = {
452 .owner = THIS_MODULE,
453 .of_match_table = pinmux_ids,
454 #ifdef CONFIG_PM_SLEEP
455 .pm = &sirfsoc_pinmux_pm_ops,
458 .probe = sirfsoc_pinmux_probe,
461 static int __init sirfsoc_pinmux_init(void)
463 return platform_driver_register(&sirfsoc_pinmux_driver);
465 arch_initcall(sirfsoc_pinmux_init);
467 static inline int sirfsoc_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
469 struct sirfsoc_gpio_bank *bank = container_of(to_of_mm_gpio_chip(chip),
470 struct sirfsoc_gpio_bank, chip);
472 return irq_create_mapping(bank->domain, offset + bank->id *
473 SIRFSOC_GPIO_BANK_SIZE);
476 static inline int sirfsoc_gpio_to_offset(unsigned int gpio)
478 return gpio % SIRFSOC_GPIO_BANK_SIZE;
481 static inline struct sirfsoc_gpio_bank *sirfsoc_gpio_to_bank(unsigned int gpio)
483 return &sgpio_bank[gpio / SIRFSOC_GPIO_BANK_SIZE];
486 static inline struct sirfsoc_gpio_bank *sirfsoc_irqchip_to_bank(struct gpio_chip *chip)
488 return container_of(to_of_mm_gpio_chip(chip), struct sirfsoc_gpio_bank, chip);
491 static void sirfsoc_gpio_irq_ack(struct irq_data *d)
493 struct sirfsoc_gpio_bank *bank = irq_data_get_irq_chip_data(d);
494 int idx = d->hwirq % SIRFSOC_GPIO_BANK_SIZE;
498 offset = SIRFSOC_GPIO_CTRL(bank->id, idx);
500 spin_lock_irqsave(&sgpio_lock, flags);
502 val = readl(bank->chip.regs + offset);
504 writel(val, bank->chip.regs + offset);
506 spin_unlock_irqrestore(&sgpio_lock, flags);
509 static void __sirfsoc_gpio_irq_mask(struct sirfsoc_gpio_bank *bank, int idx)
514 offset = SIRFSOC_GPIO_CTRL(bank->id, idx);
516 spin_lock_irqsave(&sgpio_lock, flags);
518 val = readl(bank->chip.regs + offset);
519 val &= ~SIRFSOC_GPIO_CTL_INTR_EN_MASK;
520 val &= ~SIRFSOC_GPIO_CTL_INTR_STS_MASK;
521 writel(val, bank->chip.regs + offset);
523 spin_unlock_irqrestore(&sgpio_lock, flags);
526 static void sirfsoc_gpio_irq_mask(struct irq_data *d)
528 struct sirfsoc_gpio_bank *bank = irq_data_get_irq_chip_data(d);
530 __sirfsoc_gpio_irq_mask(bank, d->hwirq % SIRFSOC_GPIO_BANK_SIZE);
533 static void sirfsoc_gpio_irq_unmask(struct irq_data *d)
535 struct sirfsoc_gpio_bank *bank = irq_data_get_irq_chip_data(d);
536 int idx = d->hwirq % SIRFSOC_GPIO_BANK_SIZE;
540 offset = SIRFSOC_GPIO_CTRL(bank->id, idx);
542 spin_lock_irqsave(&sgpio_lock, flags);
544 val = readl(bank->chip.regs + offset);
545 val &= ~SIRFSOC_GPIO_CTL_INTR_STS_MASK;
546 val |= SIRFSOC_GPIO_CTL_INTR_EN_MASK;
547 writel(val, bank->chip.regs + offset);
549 spin_unlock_irqrestore(&sgpio_lock, flags);
552 static int sirfsoc_gpio_irq_type(struct irq_data *d, unsigned type)
554 struct sirfsoc_gpio_bank *bank = irq_data_get_irq_chip_data(d);
555 int idx = d->hwirq % SIRFSOC_GPIO_BANK_SIZE;
559 offset = SIRFSOC_GPIO_CTRL(bank->id, idx);
561 spin_lock_irqsave(&sgpio_lock, flags);
563 val = readl(bank->chip.regs + offset);
564 val &= ~(SIRFSOC_GPIO_CTL_INTR_STS_MASK | SIRFSOC_GPIO_CTL_OUT_EN_MASK);
569 case IRQ_TYPE_EDGE_RISING:
570 val |= SIRFSOC_GPIO_CTL_INTR_HIGH_MASK | SIRFSOC_GPIO_CTL_INTR_TYPE_MASK;
571 val &= ~SIRFSOC_GPIO_CTL_INTR_LOW_MASK;
573 case IRQ_TYPE_EDGE_FALLING:
574 val &= ~SIRFSOC_GPIO_CTL_INTR_HIGH_MASK;
575 val |= SIRFSOC_GPIO_CTL_INTR_LOW_MASK | SIRFSOC_GPIO_CTL_INTR_TYPE_MASK;
577 case IRQ_TYPE_EDGE_BOTH:
578 val |= SIRFSOC_GPIO_CTL_INTR_HIGH_MASK | SIRFSOC_GPIO_CTL_INTR_LOW_MASK |
579 SIRFSOC_GPIO_CTL_INTR_TYPE_MASK;
581 case IRQ_TYPE_LEVEL_LOW:
582 val &= ~(SIRFSOC_GPIO_CTL_INTR_HIGH_MASK | SIRFSOC_GPIO_CTL_INTR_TYPE_MASK);
583 val |= SIRFSOC_GPIO_CTL_INTR_LOW_MASK;
585 case IRQ_TYPE_LEVEL_HIGH:
586 val |= SIRFSOC_GPIO_CTL_INTR_HIGH_MASK;
587 val &= ~(SIRFSOC_GPIO_CTL_INTR_LOW_MASK | SIRFSOC_GPIO_CTL_INTR_TYPE_MASK);
591 writel(val, bank->chip.regs + offset);
593 spin_unlock_irqrestore(&sgpio_lock, flags);
598 static unsigned int sirfsoc_gpio_irq_startup(struct irq_data *d)
600 struct sirfsoc_gpio_bank *bank = irq_data_get_irq_chip_data(d);
602 if (gpio_lock_as_irq(&bank->chip.gc, d->hwirq % SIRFSOC_GPIO_BANK_SIZE))
603 dev_err(bank->chip.gc.dev,
604 "unable to lock HW IRQ %lu for IRQ\n",
606 sirfsoc_gpio_irq_unmask(d);
610 static void sirfsoc_gpio_irq_shutdown(struct irq_data *d)
612 struct sirfsoc_gpio_bank *bank = irq_data_get_irq_chip_data(d);
614 sirfsoc_gpio_irq_mask(d);
615 gpio_unlock_as_irq(&bank->chip.gc, d->hwirq % SIRFSOC_GPIO_BANK_SIZE);
618 static struct irq_chip sirfsoc_irq_chip = {
619 .name = "sirf-gpio-irq",
620 .irq_ack = sirfsoc_gpio_irq_ack,
621 .irq_mask = sirfsoc_gpio_irq_mask,
622 .irq_unmask = sirfsoc_gpio_irq_unmask,
623 .irq_set_type = sirfsoc_gpio_irq_type,
624 .irq_startup = sirfsoc_gpio_irq_startup,
625 .irq_shutdown = sirfsoc_gpio_irq_shutdown,
628 static void sirfsoc_gpio_handle_irq(unsigned int irq, struct irq_desc *desc)
630 struct sirfsoc_gpio_bank *bank = irq_get_handler_data(irq);
633 struct irq_chip *chip = irq_get_chip(irq);
635 chained_irq_enter(chip, desc);
637 status = readl(bank->chip.regs + SIRFSOC_GPIO_INT_STATUS(bank->id));
640 "%s: gpio id %d status %#x no interrupt is flaged\n",
641 __func__, bank->id, status);
642 handle_bad_irq(irq, desc);
647 ctrl = readl(bank->chip.regs + SIRFSOC_GPIO_CTRL(bank->id, idx));
650 * Here we must check whether the corresponding GPIO's interrupt
651 * has been enabled, otherwise just skip it
653 if ((status & 0x1) && (ctrl & SIRFSOC_GPIO_CTL_INTR_EN_MASK)) {
654 pr_debug("%s: gpio id %d idx %d happens\n",
655 __func__, bank->id, idx);
656 generic_handle_irq(irq_find_mapping(bank->domain, idx +
657 bank->id * SIRFSOC_GPIO_BANK_SIZE));
661 status = status >> 1;
664 chained_irq_exit(chip, desc);
667 static inline void sirfsoc_gpio_set_input(struct sirfsoc_gpio_bank *bank, unsigned ctrl_offset)
671 val = readl(bank->chip.regs + ctrl_offset);
672 val &= ~SIRFSOC_GPIO_CTL_OUT_EN_MASK;
673 writel(val, bank->chip.regs + ctrl_offset);
676 static int sirfsoc_gpio_request(struct gpio_chip *chip, unsigned offset)
678 struct sirfsoc_gpio_bank *bank = sirfsoc_irqchip_to_bank(chip);
681 if (pinctrl_request_gpio(chip->base + offset))
684 spin_lock_irqsave(&bank->lock, flags);
688 * set direction as input and mask irq
690 sirfsoc_gpio_set_input(bank, SIRFSOC_GPIO_CTRL(bank->id, offset));
691 __sirfsoc_gpio_irq_mask(bank, offset);
693 spin_unlock_irqrestore(&bank->lock, flags);
698 static void sirfsoc_gpio_free(struct gpio_chip *chip, unsigned offset)
700 struct sirfsoc_gpio_bank *bank = sirfsoc_irqchip_to_bank(chip);
703 spin_lock_irqsave(&bank->lock, flags);
705 __sirfsoc_gpio_irq_mask(bank, offset);
706 sirfsoc_gpio_set_input(bank, SIRFSOC_GPIO_CTRL(bank->id, offset));
708 spin_unlock_irqrestore(&bank->lock, flags);
710 pinctrl_free_gpio(chip->base + offset);
713 static int sirfsoc_gpio_direction_input(struct gpio_chip *chip, unsigned gpio)
715 struct sirfsoc_gpio_bank *bank = sirfsoc_irqchip_to_bank(chip);
716 int idx = sirfsoc_gpio_to_offset(gpio);
720 offset = SIRFSOC_GPIO_CTRL(bank->id, idx);
722 spin_lock_irqsave(&bank->lock, flags);
724 sirfsoc_gpio_set_input(bank, offset);
726 spin_unlock_irqrestore(&bank->lock, flags);
731 static inline void sirfsoc_gpio_set_output(struct sirfsoc_gpio_bank *bank, unsigned offset,
737 spin_lock_irqsave(&bank->lock, flags);
739 out_ctrl = readl(bank->chip.regs + offset);
741 out_ctrl |= SIRFSOC_GPIO_CTL_DATAOUT_MASK;
743 out_ctrl &= ~SIRFSOC_GPIO_CTL_DATAOUT_MASK;
745 out_ctrl &= ~SIRFSOC_GPIO_CTL_INTR_EN_MASK;
746 out_ctrl |= SIRFSOC_GPIO_CTL_OUT_EN_MASK;
747 writel(out_ctrl, bank->chip.regs + offset);
749 spin_unlock_irqrestore(&bank->lock, flags);
752 static int sirfsoc_gpio_direction_output(struct gpio_chip *chip, unsigned gpio, int value)
754 struct sirfsoc_gpio_bank *bank = sirfsoc_irqchip_to_bank(chip);
755 int idx = sirfsoc_gpio_to_offset(gpio);
759 offset = SIRFSOC_GPIO_CTRL(bank->id, idx);
761 spin_lock_irqsave(&sgpio_lock, flags);
763 sirfsoc_gpio_set_output(bank, offset, value);
765 spin_unlock_irqrestore(&sgpio_lock, flags);
770 static int sirfsoc_gpio_get_value(struct gpio_chip *chip, unsigned offset)
772 struct sirfsoc_gpio_bank *bank = sirfsoc_irqchip_to_bank(chip);
776 spin_lock_irqsave(&bank->lock, flags);
778 val = readl(bank->chip.regs + SIRFSOC_GPIO_CTRL(bank->id, offset));
780 spin_unlock_irqrestore(&bank->lock, flags);
782 return !!(val & SIRFSOC_GPIO_CTL_DATAIN_MASK);
785 static void sirfsoc_gpio_set_value(struct gpio_chip *chip, unsigned offset,
788 struct sirfsoc_gpio_bank *bank = sirfsoc_irqchip_to_bank(chip);
792 spin_lock_irqsave(&bank->lock, flags);
794 ctrl = readl(bank->chip.regs + SIRFSOC_GPIO_CTRL(bank->id, offset));
796 ctrl |= SIRFSOC_GPIO_CTL_DATAOUT_MASK;
798 ctrl &= ~SIRFSOC_GPIO_CTL_DATAOUT_MASK;
799 writel(ctrl, bank->chip.regs + SIRFSOC_GPIO_CTRL(bank->id, offset));
801 spin_unlock_irqrestore(&bank->lock, flags);
804 static int sirfsoc_gpio_irq_map(struct irq_domain *d, unsigned int irq,
805 irq_hw_number_t hwirq)
807 struct sirfsoc_gpio_bank *bank = d->host_data;
812 irq_set_chip(irq, &sirfsoc_irq_chip);
813 irq_set_handler(irq, handle_level_irq);
814 irq_set_chip_data(irq, bank + hwirq / SIRFSOC_GPIO_BANK_SIZE);
815 set_irq_flags(irq, IRQF_VALID);
820 static const struct irq_domain_ops sirfsoc_gpio_irq_simple_ops = {
821 .map = sirfsoc_gpio_irq_map,
822 .xlate = irq_domain_xlate_twocell,
825 static void sirfsoc_gpio_set_pullup(const u32 *pullups)
828 const unsigned long *p = (const unsigned long *)pullups;
830 for (i = 0; i < SIRFSOC_GPIO_NO_OF_BANKS; i++) {
831 for_each_set_bit(n, p + i, BITS_PER_LONG) {
832 u32 offset = SIRFSOC_GPIO_CTRL(i, n);
833 u32 val = readl(sgpio_bank[i].chip.regs + offset);
834 val |= SIRFSOC_GPIO_CTL_PULL_MASK;
835 val |= SIRFSOC_GPIO_CTL_PULL_HIGH;
836 writel(val, sgpio_bank[i].chip.regs + offset);
841 static void sirfsoc_gpio_set_pulldown(const u32 *pulldowns)
844 const unsigned long *p = (const unsigned long *)pulldowns;
846 for (i = 0; i < SIRFSOC_GPIO_NO_OF_BANKS; i++) {
847 for_each_set_bit(n, p + i, BITS_PER_LONG) {
848 u32 offset = SIRFSOC_GPIO_CTRL(i, n);
849 u32 val = readl(sgpio_bank[i].chip.regs + offset);
850 val |= SIRFSOC_GPIO_CTL_PULL_MASK;
851 val &= ~SIRFSOC_GPIO_CTL_PULL_HIGH;
852 writel(val, sgpio_bank[i].chip.regs + offset);
857 static int sirfsoc_gpio_probe(struct device_node *np)
860 struct sirfsoc_gpio_bank *bank;
862 struct platform_device *pdev;
863 struct irq_domain *domain;
864 bool is_marco = false;
866 u32 pullups[SIRFSOC_GPIO_NO_OF_BANKS], pulldowns[SIRFSOC_GPIO_NO_OF_BANKS];
868 pdev = of_find_device_by_node(np);
872 regs = of_iomap(np, 0);
876 if (of_device_is_compatible(np, "sirf,marco-pinctrl"))
879 domain = irq_domain_add_linear(np, SIRFSOC_GPIO_BANK_SIZE * SIRFSOC_GPIO_NO_OF_BANKS,
880 &sirfsoc_gpio_irq_simple_ops, sgpio_bank);
882 pr_err("%s: Failed to create irqdomain\n", np->full_name);
887 for (i = 0; i < SIRFSOC_GPIO_NO_OF_BANKS; i++) {
888 bank = &sgpio_bank[i];
889 spin_lock_init(&bank->lock);
890 bank->chip.gc.request = sirfsoc_gpio_request;
891 bank->chip.gc.free = sirfsoc_gpio_free;
892 bank->chip.gc.direction_input = sirfsoc_gpio_direction_input;
893 bank->chip.gc.get = sirfsoc_gpio_get_value;
894 bank->chip.gc.direction_output = sirfsoc_gpio_direction_output;
895 bank->chip.gc.set = sirfsoc_gpio_set_value;
896 bank->chip.gc.to_irq = sirfsoc_gpio_to_irq;
897 bank->chip.gc.base = i * SIRFSOC_GPIO_BANK_SIZE;
898 bank->chip.gc.ngpio = SIRFSOC_GPIO_BANK_SIZE;
899 bank->chip.gc.label = kstrdup(np->full_name, GFP_KERNEL);
900 bank->chip.gc.of_node = np;
901 bank->chip.gc.of_xlate = sirfsoc_gpio_of_xlate;
902 bank->chip.gc.of_gpio_n_cells = 2;
903 bank->chip.gc.dev = &pdev->dev;
904 bank->chip.regs = regs;
906 bank->is_marco = is_marco;
907 bank->parent_irq = platform_get_irq(pdev, i);
908 if (bank->parent_irq < 0) {
909 err = bank->parent_irq;
913 err = gpiochip_add(&bank->chip.gc);
915 pr_err("%s: error in probe function with status %d\n",
920 bank->domain = domain;
922 irq_set_chained_handler(bank->parent_irq, sirfsoc_gpio_handle_irq);
923 irq_set_handler_data(bank->parent_irq, bank);
926 if (!of_property_read_u32_array(np, "sirf,pullups", pullups,
927 SIRFSOC_GPIO_NO_OF_BANKS))
928 sirfsoc_gpio_set_pullup(pullups);
930 if (!of_property_read_u32_array(np, "sirf,pulldowns", pulldowns,
931 SIRFSOC_GPIO_NO_OF_BANKS))
932 sirfsoc_gpio_set_pulldown(pulldowns);
941 static int __init sirfsoc_gpio_init(void)
944 struct device_node *np;
946 np = of_find_matching_node(NULL, pinmux_ids);
951 return sirfsoc_gpio_probe(np);
953 subsys_initcall(sirfsoc_gpio_init);
955 MODULE_AUTHOR("Rongjun Ying <rongjun.ying@csr.com>, "
956 "Yuping Luo <yuping.luo@csr.com>, "
957 "Barry Song <baohua.song@csr.com>");
958 MODULE_DESCRIPTION("SIRFSOC pin control driver");
959 MODULE_LICENSE("GPL");