drivers/gpio/gpio-bd71815.c

1 // SPDX-License-Identifier: GPL-2.0
8  * Author: yanglsh@embest-tech.com
18 #include <linux/mfd/rohm-bd71815.h>
33 	ret = regmap_read(bd71815->regmap, BD71815_REG_GPO, &val);  in bd71815gpo_get()
49 		return regmap_set_bits(bd71815->regmap, BD71815_REG_GPO, bit);  in bd71815gpo_set()
51 	return regmap_clear_bits(bd71815->regmap, BD71815_REG_GPO, bit);  in bd71815gpo_set()
61 		return regmap_update_bits(bdgpio->regmap,  in bd71815_gpio_set_config()
66 		return regmap_update_bits(bdgpio->regmap,  in bd71815_gpio_set_config()
73 	return -ENOTSUPP;  in bd71815_gpio_set_config()
102  * connected to the ground is a bad idea. Thus we do not support it by default.
103  * OTOH - the original driver written by colleagues at Embest did support
109  * "rohm,enable-hidden-gpo".
118 	if (gc->parent && device_property_present(gc->parent,  in bd71815_init_valid_mask()
119 						  "rohm,enable-hidden-gpo"))  in bd71815_init_valid_mask()
136 	dev = &pdev->dev;  in gpo_bd71815_probe()
137 	/* The device-tree and regmap come from MFD => use parent for that */  in gpo_bd71815_probe()
138 	parent = dev->parent;  in gpo_bd71815_probe()
142 		return -ENOMEM;  in gpo_bd71815_probe()
144 	g->chip = bd71815gpo_chip;  in gpo_bd71815_probe()
149 	 * to 1 if "rohm,enable-hidden-gpo" is not given.  in gpo_bd71815_probe()
156 	if (device_property_present(parent, "rohm,enable-hidden-gpo"))  in gpo_bd71815_probe()
157 		g->chip.ngpio = 2;  in gpo_bd71815_probe()
159 		g->chip.ngpio = 1;  in gpo_bd71815_probe()
161 	g->chip.init_valid_mask = bd71815_init_valid_mask;  in gpo_bd71815_probe()
162 	g->chip.base = -1;  in gpo_bd71815_probe()
163 	g->chip.parent = parent;  in gpo_bd71815_probe()
164 	g->regmap = dev_get_regmap(parent, NULL);  in gpo_bd71815_probe()
165 	g->dev = dev;  in gpo_bd71815_probe()
167 	return devm_gpiochip_add_data(dev, &g->chip, g);  in gpo_bd71815_probe()
172 		.name	= "bd71815-gpo",
178 MODULE_ALIAS("platform:bd71815-gpo");
180 MODULE_AUTHOR("Peter Yang <yanglsh@embest-tech.com>");