1 // SPDX-License-Identifier: GPL-2.0+
3  * Loongson GPIO Support
5  * Copyright (C) 2022-2023 Loongson Technology Corporation Limited
47 	u8 bval = input ? 1 : 0;  in loongson_commit_direction()
49 	writeb(bval, lgpio->reg_base + lgpio->chip_data->conf_offset + pin);  in loongson_commit_direction()
54 	u8 bval = high ? 1 : 0;  in loongson_commit_level()
56 	writeb(bval, lgpio->reg_base + lgpio->chip_data->out_offset + pin);  in loongson_commit_level()
64 	spin_lock_irqsave(&lgpio->lock, flags);  in loongson_gpio_direction_input()
65 	loongson_commit_direction(lgpio, pin, 1);  in loongson_gpio_direction_input()
66 	spin_unlock_irqrestore(&lgpio->lock, flags);  in loongson_gpio_direction_input()
76 	spin_lock_irqsave(&lgpio->lock, flags);  in loongson_gpio_direction_output()
79 	spin_unlock_irqrestore(&lgpio->lock, flags);  in loongson_gpio_direction_output()
90 	bval = readb(lgpio->reg_base + lgpio->chip_data->in_offset + pin);  in loongson_gpio_get()
91 	val = bval & 1;  in loongson_gpio_get()
101 	bval = readb(lgpio->reg_base + lgpio->chip_data->conf_offset + pin);  in loongson_gpio_get_direction()
102 	if (bval & 1)  in loongson_gpio_get_direction()
113 	spin_lock_irqsave(&lgpio->lock, flags);  in loongson_gpio_set()
115 	spin_unlock_irqrestore(&lgpio->lock, flags);  in loongson_gpio_set()
121 	struct platform_device *pdev = to_platform_device(chip->parent);  in loongson_gpio_to_irq()
124 	if (lgpio->chip_data->mode == BIT_CTRL_MODE) {  in loongson_gpio_to_irq()
126 		u = readl(lgpio->reg_base + lgpio->chip_data->inten_offset + (offset / 32) * 4);  in loongson_gpio_to_irq()
128 		writel(u, lgpio->reg_base + lgpio->chip_data->inten_offset + (offset / 32) * 4);  in loongson_gpio_to_irq()
130 		writeb(1, lgpio->reg_base + lgpio->chip_data->inten_offset + offset);  in loongson_gpio_to_irq()
141 	lgpio->reg_base = reg_base;  in loongson_gpio_init()
142 	if (lgpio->chip_data->mode == BIT_CTRL_MODE) {  in loongson_gpio_init()
143 		ret = bgpio_init(&lgpio->chip, dev, 8,  in loongson_gpio_init()
144 				lgpio->reg_base + lgpio->chip_data->in_offset,  in loongson_gpio_init()
145 				lgpio->reg_base + lgpio->chip_data->out_offset,  in loongson_gpio_init()
147 				lgpio->reg_base + lgpio->chip_data->conf_offset,  in loongson_gpio_init()
154 		lgpio->chip.direction_input = loongson_gpio_direction_input;  in loongson_gpio_init()
155 		lgpio->chip.get = loongson_gpio_get;  in loongson_gpio_init()
156 		lgpio->chip.get_direction = loongson_gpio_get_direction;  in loongson_gpio_init()
157 		lgpio->chip.direction_output = loongson_gpio_direction_output;  in loongson_gpio_init()
158 		lgpio->chip.set = loongson_gpio_set;  in loongson_gpio_init()
159 		lgpio->chip.parent = dev;  in loongson_gpio_init()
160 		spin_lock_init(&lgpio->lock);  in loongson_gpio_init()
163 	lgpio->chip.label = lgpio->chip_data->label;  in loongson_gpio_init()
164 	lgpio->chip.can_sleep = false;  in loongson_gpio_init()
165 	if (lgpio->chip_data->inten_offset)  in loongson_gpio_init()
166 		lgpio->chip.to_irq = loongson_gpio_to_irq;  in loongson_gpio_init()
168 	return devm_gpiochip_add_data(dev, &lgpio->chip, lgpio);  in loongson_gpio_init()
175 	struct device *dev = &pdev->dev;  in loongson_gpio_probe()
179 		return -ENOMEM;  in loongson_gpio_probe()
181 	lgpio->chip_data = device_get_match_data(dev);  in loongson_gpio_probe()
275 /* Loongson-3A6000 node GPIO */
286 		.compatible = "loongson,ls2k-gpio",
290 		.compatible = "loongson,ls2k0500-gpio0",
294 		.compatible = "loongson,ls2k0500-gpio1",
298 		.compatible = "loongson,ls2k2000-gpio0",
302 		.compatible = "loongson,ls2k2000-gpio1",
306 		.compatible = "loongson,ls2k2000-gpio2",
310 		.compatible = "loongson,ls3a5000-gpio",
314 		.compatible = "loongson,ls7a-gpio",
318 		.compatible = "loongson,ls7a2000-gpio1",
322 		.compatible = "loongson,ls7a2000-gpio2",
326 		.compatible = "loongson,ls3a6000-gpio",
372 		.name = "loongson-gpio",
385 MODULE_DESCRIPTION("Loongson gpio driver");