1 // SPDX-License-Identifier: GPL-2.0
7  * Copyright 2014 Embest Technology Co. Ltd. Inc.
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 		ret = regmap_set_bits(bd71815->regmap, BD71815_REG_GPO, bit);  in bd71815gpo_set()
51 		ret = regmap_clear_bits(bd71815->regmap, BD71815_REG_GPO, bit);  in bd71815gpo_set()
54 		dev_warn(bd71815->dev, "failed to toggle GPO\n");  in bd71815gpo_set()
64 		return regmap_update_bits(bdgpio->regmap,  in bd71815_gpio_set_config()
69 		return regmap_update_bits(bdgpio->regmap,  in bd71815_gpio_set_config()
76 	return -ENOTSUPP;  in bd71815_gpio_set_config()
102  * located at the center of IC is hard to use on PCB (due to the location). It
106  * OTOH - the original driver written by colleagues at Embest did support
112  * "rohm,enable-hidden-gpo".
121 	if (gc->parent && device_property_present(gc->parent,  in bd71815_init_valid_mask()
122 						  "rohm,enable-hidden-gpo"))  in bd71815_init_valid_mask()
139 	dev = &pdev->dev;  in gpo_bd71815_probe()
140 	/* The device-tree and regmap come from MFD => use parent for that */  in gpo_bd71815_probe()
141 	parent = dev->parent;  in gpo_bd71815_probe()
145 		return -ENOMEM;  in gpo_bd71815_probe()
147 	g->chip = bd71815gpo_chip;  in gpo_bd71815_probe()
152 	 * to 1 if "rohm,enable-hidden-gpo" is not given.  in gpo_bd71815_probe()
159 	if (device_property_present(parent, "rohm,enable-hidden-gpo"))  in gpo_bd71815_probe()
160 		g->chip.ngpio = 2;  in gpo_bd71815_probe()
162 		g->chip.ngpio = 1;  in gpo_bd71815_probe()
164 	g->chip.init_valid_mask = bd71815_init_valid_mask;  in gpo_bd71815_probe()
165 	g->chip.base = -1;  in gpo_bd71815_probe()
166 	g->chip.parent = parent;  in gpo_bd71815_probe()
167 	g->regmap = dev_get_regmap(parent, NULL);  in gpo_bd71815_probe()
168 	g->dev = dev;  in gpo_bd71815_probe()
170 	return devm_gpiochip_add_data(dev, &g->chip, g);  in gpo_bd71815_probe()
175 		.name	= "bd71815-gpo",
181 MODULE_ALIAS("platform:bd71815-gpo");
183 MODULE_AUTHOR("Peter Yang <yanglsh@embest-tech.com>");