1 // SPDX-License-Identifier: GPL-2.0-only
4 #include <linux/gpio/driver.h>
5 #include <linux/mfd/rohm-bd71828.h>
15 	struct gpio_chip gpio;  member
27 	 * we are dealing with - then we are done  in bd71828_gpio_set()
32 	ret = regmap_update_bits(bdgpio->chip.regmap, GPIO_OUT_REG(offset),  in bd71828_gpio_set()
35 		dev_err(bdgpio->chip.dev, "Could not set gpio to %d\n", value);  in bd71828_gpio_set()
45 		ret = regmap_read(bdgpio->chip.regmap, BD71828_REG_IO_STAT,  in bd71828_gpio_get()
48 		ret = regmap_read(bdgpio->chip.regmap, GPIO_OUT_REG(offset),  in bd71828_gpio_get()
62 		return -ENOTSUPP;  in bd71828_gpio_set_config()
66 		return regmap_update_bits(bdgpio->chip.regmap,  in bd71828_gpio_set_config()
71 		return regmap_update_bits(bdgpio->chip.regmap,  in bd71828_gpio_set_config()
78 	return -ENOTSUPP;  in bd71828_gpio_set_config()
85 	 * we trust that if the pin is not excluded by "gpio-reserved-ranges"  in bd71828_get_direction()
87 	 * on BD71828 can't really be used for general purpose input - input  in bd71828_get_direction()
102 	bd71828 = dev_get_drvdata(pdev->dev.parent);  in bd71828_probe()
104 		dev_err(&pdev->dev, "No MFD driver data\n");  in bd71828_probe()
105 		return -EINVAL;  in bd71828_probe()
108 	bdgpio = devm_kzalloc(&pdev->dev, sizeof(*bdgpio),  in bd71828_probe()
111 		return -ENOMEM;  in bd71828_probe()
113 	bdgpio->chip.dev = &pdev->dev;  in bd71828_probe()
114 	bdgpio->gpio.parent = pdev->dev.parent;  in bd71828_probe()
115 	bdgpio->gpio.label = "bd71828-gpio";  in bd71828_probe()
116 	bdgpio->gpio.owner = THIS_MODULE;  in bd71828_probe()
117 	bdgpio->gpio.get_direction = bd71828_get_direction;  in bd71828_probe()
118 	bdgpio->gpio.set_config = bd71828_gpio_set_config;  in bd71828_probe()
119 	bdgpio->gpio.can_sleep = true;  in bd71828_probe()
120 	bdgpio->gpio.get = bd71828_gpio_get;  in bd71828_probe()
121 	bdgpio->gpio.set = bd71828_gpio_set;  in bd71828_probe()
122 	bdgpio->gpio.base = -1;  in bd71828_probe()
127 	 * "gpio-reserved-ranges" and exclude them from control  in bd71828_probe()
129 	bdgpio->gpio.ngpio = 4;  in bd71828_probe()
130 	bdgpio->gpio.of_node = pdev->dev.parent->of_node;  in bd71828_probe()
131 	bdgpio->chip.regmap = bd71828->regmap;  in bd71828_probe()
133 	return devm_gpiochip_add_data(&pdev->dev, &bdgpio->gpio,  in bd71828_probe()
139 		.name = "bd71828-gpio"
149 MODULE_ALIAS("platform:bd71828-gpio");