1 // SPDX-License-Identifier: GPL-2.0+
3  * Loongson GPIO Support
5  * Copyright (C) 2022-2023 Loongson Technology Corporation Limited
48 	u8 bval = input ? 1 : 0;  in loongson_commit_direction()
50 	writeb(bval, lgpio->reg_base + lgpio->chip_data->conf_offset + pin);  in loongson_commit_direction()
55 	u8 bval = high ? 1 : 0;  in loongson_commit_level()
57 	writeb(bval, lgpio->reg_base + lgpio->chip_data->out_offset + pin);  in loongson_commit_level()
65 	spin_lock_irqsave(&lgpio->lock, flags);  in loongson_gpio_direction_input()
66 	loongson_commit_direction(lgpio, pin, 1);  in loongson_gpio_direction_input()
67 	spin_unlock_irqrestore(&lgpio->lock, flags);  in loongson_gpio_direction_input()
77 	spin_lock_irqsave(&lgpio->lock, flags);  in loongson_gpio_direction_output()
80 	spin_unlock_irqrestore(&lgpio->lock, flags);  in loongson_gpio_direction_output()
91 	bval = readb(lgpio->reg_base + lgpio->chip_data->in_offset + pin);  in loongson_gpio_get()
92 	val = bval & 1;  in loongson_gpio_get()
102 	bval = readb(lgpio->reg_base + lgpio->chip_data->conf_offset + pin);  in loongson_gpio_get_direction()
103 	if (bval & 1)  in loongson_gpio_get_direction()
114 	spin_lock_irqsave(&lgpio->lock, flags);  in loongson_gpio_set()
116 	spin_unlock_irqrestore(&lgpio->lock, flags);  in loongson_gpio_set()
122 	struct platform_device *pdev = to_platform_device(chip->parent);  in loongson_gpio_to_irq()
125 	if (lgpio->chip_data->mode == BIT_CTRL_MODE) {  in loongson_gpio_to_irq()
127 		u = readl(lgpio->reg_base + lgpio->chip_data->inten_offset + (offset / 32) * 4);  in loongson_gpio_to_irq()
129 		writel(u, lgpio->reg_base + lgpio->chip_data->inten_offset + (offset / 32) * 4);  in loongson_gpio_to_irq()
131 		writeb(1, lgpio->reg_base + lgpio->chip_data->inten_offset + offset);  in loongson_gpio_to_irq()
143 	lgpio->reg_base = reg_base;  in loongson_gpio_init()
144 	if (lgpio->chip_data->mode == BIT_CTRL_MODE) {  in loongson_gpio_init()
145 		ret = bgpio_init(&lgpio->chip, dev, 8,  in loongson_gpio_init()
146 				lgpio->reg_base + lgpio->chip_data->in_offset,  in loongson_gpio_init()
147 				lgpio->reg_base + lgpio->chip_data->out_offset,  in loongson_gpio_init()
149 				lgpio->reg_base + lgpio->chip_data->conf_offset,  in loongson_gpio_init()
156 		lgpio->chip.direction_input = loongson_gpio_direction_input;  in loongson_gpio_init()
157 		lgpio->chip.get = loongson_gpio_get;  in loongson_gpio_init()
158 		lgpio->chip.get_direction = loongson_gpio_get_direction;  in loongson_gpio_init()
159 		lgpio->chip.direction_output = loongson_gpio_direction_output;  in loongson_gpio_init()
160 		lgpio->chip.set = loongson_gpio_set;  in loongson_gpio_init()
161 		lgpio->chip.parent = dev;  in loongson_gpio_init()
163 		lgpio->chip.ngpio = ngpios;  in loongson_gpio_init()
164 		spin_lock_init(&lgpio->lock);  in loongson_gpio_init()
167 	lgpio->chip.label = lgpio->chip_data->label;  in loongson_gpio_init()
168 	lgpio->chip.can_sleep = false;  in loongson_gpio_init()
169 	if (lgpio->chip_data->inten_offset)  in loongson_gpio_init()
170 		lgpio->chip.to_irq = loongson_gpio_to_irq;  in loongson_gpio_init()
172 	return devm_gpiochip_add_data(dev, &lgpio->chip, lgpio);  in loongson_gpio_init()
179 	struct device *dev = &pdev->dev;  in loongson_gpio_probe()
183 		return -ENOMEM;  in loongson_gpio_probe()
185 	lgpio->chip_data = device_get_match_data(dev);  in loongson_gpio_probe()
263 		.compatible = "loongson,ls2k-gpio",
267 		.compatible = "loongson,ls2k0500-gpio0",
271 		.compatible = "loongson,ls2k0500-gpio1",
275 		.compatible = "loongson,ls2k2000-gpio0",
279 		.compatible = "loongson,ls2k2000-gpio1",
283 		.compatible = "loongson,ls2k2000-gpio2",
287 		.compatible = "loongson,ls3a5000-gpio",
291 		.compatible = "loongson,ls7a-gpio",
325 		.name = "loongson-gpio",
338 MODULE_DESCRIPTION("Loongson gpio driver");