1 // SPDX-License-Identifier: GPL-2.0-only
8  * Based on: pinctrl-pistachio.c
13 #include <dt-bindings/pinctrl/apple.h>
26 #include "pinctrl-utils.h"
77 /* No locking needed to mask/unmask IRQs as the interrupt mode is per pin-register. */
81 	regmap_update_bits(pctl->map, REG_GPIO(pin), mask, value);  in apple_gpio_set_reg()
90 	ret = regmap_read(pctl->map, REG_GPIO(pin), &val);  in apple_gpio_get_reg()
106 	u32 pinfunc, pin, func;  in apple_gpio_dt_node_to_map()  local
119 		dev_err(pctl->dev,  in apple_gpio_dt_node_to_map()
122 		return ret ? ret : -EINVAL;  in apple_gpio_dt_node_to_map()
132 		ret = of_property_read_u32_index(node, "pinmux", i, &pinfunc);  in apple_gpio_dt_node_to_map()
136 		pin = APPLE_PIN(pinfunc);  in apple_gpio_dt_node_to_map()
137 		func = APPLE_FUNC(pinfunc);  in apple_gpio_dt_node_to_map()
140 			ret = -EINVAL;  in apple_gpio_dt_node_to_map()
145 		function_name = pinmux_generic_get_function_name(pctl->pctldev, func);  in apple_gpio_dt_node_to_map()
146 		ret = pinctrl_utils_add_map_mux(pctl->pctldev, map,  in apple_gpio_dt_node_to_map()
212 		reg = readl_relaxed(pctl->base + REG_GPIO(offset));  in apple_gpio_get()
253 	unsigned int irqgrp = FIELD_GET(REG_GPIOx_GRP, apple_gpio_get_reg(pctl, data->hwirq));  in apple_gpio_irq_ack()
255 	writel(BIT(data->hwirq % 32), pctl->base + REG_IRQ(irqgrp, data->hwirq));  in apple_gpio_irq_ack()
281 	apple_gpio_set_reg(pctl, data->hwirq, REG_GPIOx_MODE,  in apple_gpio_irq_mask()
283 	gpiochip_disable_irq(gc, data->hwirq);  in apple_gpio_irq_mask()
292 	gpiochip_enable_irq(gc, data->hwirq);  in apple_gpio_irq_unmask()
293 	apple_gpio_set_reg(pctl, data->hwirq, REG_GPIOx_MODE,  in apple_gpio_irq_unmask()
302 	apple_gpio_set_reg(pctl, data->hwirq, REG_GPIOx_GRP,  in apple_gpio_irq_startup()
305 	apple_gpio_direction_input(chip, data->hwirq);  in apple_gpio_irq_startup()
317 		return -EINVAL;  in apple_gpio_irq_set_type()
319 	apple_gpio_set_reg(pctl, data->hwirq, REG_GPIOx_MODE,  in apple_gpio_irq_set_type()
338 	pctl = container_of(grpp - *grpp, typeof(*pctl), irqgrps[0]);  in apple_gpio_irq_handler()
339 	gc = &pctl->gpio_chip;  in apple_gpio_irq_handler()
342 	for (pinh = 0; pinh < gc->ngpio; pinh += 32) {  in apple_gpio_irq_handler()
343 		pending = readl_relaxed(pctl->base + REG_IRQ(*grpp, pinh));  in apple_gpio_irq_handler()
345 			generic_handle_domain_irq(gc->irq.domain, pinh + pinl);  in apple_gpio_irq_handler()
351 	.name			= "Apple-GPIO",
365 	struct gpio_irq_chip *girq = &pctl->gpio_chip.irq;  in apple_gpio_register()
369 	pctl->gpio_chip.label = dev_name(pctl->dev);  in apple_gpio_register()
370 	pctl->gpio_chip.request = gpiochip_generic_request;  in apple_gpio_register()
371 	pctl->gpio_chip.free = gpiochip_generic_free;  in apple_gpio_register()
372 	pctl->gpio_chip.get_direction = apple_gpio_get_direction;  in apple_gpio_register()
373 	pctl->gpio_chip.direction_input = apple_gpio_direction_input;  in apple_gpio_register()
374 	pctl->gpio_chip.direction_output = apple_gpio_direction_output;  in apple_gpio_register()
375 	pctl->gpio_chip.get = apple_gpio_get;  in apple_gpio_register()
376 	pctl->gpio_chip.set = apple_gpio_set;  in apple_gpio_register()
377 	pctl->gpio_chip.base = -1;  in apple_gpio_register()
378 	pctl->gpio_chip.ngpio = pctl->pinctrl_desc.npins;  in apple_gpio_register()
379 	pctl->gpio_chip.parent = pctl->dev;  in apple_gpio_register()
381 	if (girq->num_parents) {  in apple_gpio_register()
385 		girq->parent_handler = apple_gpio_irq_handler;  in apple_gpio_register()
387 		girq->parents = kmalloc_array(girq->num_parents,  in apple_gpio_register()
388 					      sizeof(*girq->parents),  in apple_gpio_register()
390 		irq_data = kmalloc_array(girq->num_parents, sizeof(*irq_data),  in apple_gpio_register()
392 		if (!girq->parents || !irq_data) {  in apple_gpio_register()
393 			ret = -ENOMEM;  in apple_gpio_register()
397 		for (i = 0; i < girq->num_parents; i++) {  in apple_gpio_register()
398 			ret = platform_get_irq(to_platform_device(pctl->dev), i);  in apple_gpio_register()
402 			girq->parents[i] = ret;  in apple_gpio_register()
403 			pctl->irqgrps[i] = i;  in apple_gpio_register()
404 			irq_data[i] = &pctl->irqgrps[i];  in apple_gpio_register()
407 		girq->parent_handler_data_array = irq_data;  in apple_gpio_register()
408 		girq->per_parent_data = true;  in apple_gpio_register()
409 		girq->default_type = IRQ_TYPE_NONE;  in apple_gpio_register()
410 		girq->handler = handle_level_irq;  in apple_gpio_register()
413 	ret = devm_gpiochip_add_data(pctl->dev, &pctl->gpio_chip, pctl);  in apple_gpio_register()
416 	kfree(girq->parents);  in apple_gpio_register()
435 	if (of_property_read_bool(pdev->dev.of_node, "interrupt-controller")) {  in apple_gpio_pinctrl_probe()
441 	pctl = devm_kzalloc(&pdev->dev, struct_size(pctl, irqgrps, nirqs),  in apple_gpio_pinctrl_probe()
444 		return -ENOMEM;  in apple_gpio_pinctrl_probe()
445 	pctl->dev = &pdev->dev;  in apple_gpio_pinctrl_probe()
446 	pctl->gpio_chip.irq.num_parents = nirqs;  in apple_gpio_pinctrl_probe()
447 	dev_set_drvdata(&pdev->dev, pctl);  in apple_gpio_pinctrl_probe()
449 	if (of_property_read_u32(pdev->dev.of_node, "apple,npins", &npins))  in apple_gpio_pinctrl_probe()
450 		return dev_err_probe(&pdev->dev, -EINVAL,  in apple_gpio_pinctrl_probe()
453 	pins = devm_kmalloc_array(&pdev->dev, npins, sizeof(pins[0]),  in apple_gpio_pinctrl_probe()
455 	pin_names = devm_kmalloc_array(&pdev->dev, npins, sizeof(pin_names[0]),  in apple_gpio_pinctrl_probe()
457 	pin_nums = devm_kmalloc_array(&pdev->dev, npins, sizeof(pin_nums[0]),  in apple_gpio_pinctrl_probe()
460 		return -ENOMEM;  in apple_gpio_pinctrl_probe()
462 	pctl->base = devm_platform_ioremap_resource(pdev, 0);  in apple_gpio_pinctrl_probe()
463 	if (IS_ERR(pctl->base))  in apple_gpio_pinctrl_probe()
464 		return PTR_ERR(pctl->base);  in apple_gpio_pinctrl_probe()
466 	pctl->map = devm_regmap_init_mmio(&pdev->dev, pctl->base, &regmap_config);  in apple_gpio_pinctrl_probe()
467 	if (IS_ERR(pctl->map))  in apple_gpio_pinctrl_probe()
468 		return dev_err_probe(&pdev->dev, PTR_ERR(pctl->map),  in apple_gpio_pinctrl_probe()
473 		pins[i].name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "PIN%u", i);  in apple_gpio_pinctrl_probe()
479 	pctl->pinctrl_desc.name = dev_name(pctl->dev);  in apple_gpio_pinctrl_probe()
480 	pctl->pinctrl_desc.pins = pins;  in apple_gpio_pinctrl_probe()
481 	pctl->pinctrl_desc.npins = npins;  in apple_gpio_pinctrl_probe()
482 	pctl->pinctrl_desc.pctlops = &apple_gpio_pinctrl_ops;  in apple_gpio_pinctrl_probe()
483 	pctl->pinctrl_desc.pmxops = &apple_gpio_pinmux_ops;  in apple_gpio_pinctrl_probe()
485 	pctl->pctldev =	devm_pinctrl_register(&pdev->dev, &pctl->pinctrl_desc, pctl);  in apple_gpio_pinctrl_probe()
486 	if (IS_ERR(pctl->pctldev))  in apple_gpio_pinctrl_probe()
487 		return dev_err_probe(&pdev->dev, PTR_ERR(pctl->pctldev),  in apple_gpio_pinctrl_probe()
491 		res = pinctrl_generic_add_group(pctl->pctldev, pins[i].name,  in apple_gpio_pinctrl_probe()
494 			return dev_err_probe(pctl->dev, res,  in apple_gpio_pinctrl_probe()
499 		res = pinmux_generic_add_function(pctl->pctldev, pinmux_functions[i],  in apple_gpio_pinctrl_probe()
502 			return dev_err_probe(pctl->dev, res,  in apple_gpio_pinctrl_probe()
517 		.name = "apple-gpio-pinctrl",