1 // SPDX-License-Identifier: GPL-2.0-only
3  * Analog Devices ADP5585 I/O expander, PWM controller and keypad controller
13 #include <linux/mfd/adp5585.h>
21 	{ .name = "adp5585-gpio", },
22 	{ .name = "adp5585-pwm", },
35  * Chip variants differ in the default configuration of pull-up and pull-down
38  * - The -00, -01 and -03 variants (collectively referred to as
39  *   ADP5585_REGMAP_00) have pull-up on all GPIO pins by default.
40  * - The -02 variant has no default pull-up or pull-down resistors.
41  * - The -04 variant has default pull-down resistors on all GPIO pins.
116 	struct adp5585_dev *adp5585;  in adp5585_i2c_probe()  local
120 	adp5585 = devm_kzalloc(&i2c->dev, sizeof(*adp5585), GFP_KERNEL);  in adp5585_i2c_probe()
121 	if (!adp5585)  in adp5585_i2c_probe()
122 		return -ENOMEM;  in adp5585_i2c_probe()
124 	i2c_set_clientdata(i2c, adp5585);  in adp5585_i2c_probe()
127 	adp5585->regmap = devm_regmap_init_i2c(i2c, regmap_config);  in adp5585_i2c_probe()
128 	if (IS_ERR(adp5585->regmap))  in adp5585_i2c_probe()
129 		return dev_err_probe(&i2c->dev, PTR_ERR(adp5585->regmap),  in adp5585_i2c_probe()
132 	ret = regmap_read(adp5585->regmap, ADP5585_ID, &id);  in adp5585_i2c_probe()
134 		return dev_err_probe(&i2c->dev, ret,  in adp5585_i2c_probe()
138 		return dev_err_probe(&i2c->dev, -ENODEV,  in adp5585_i2c_probe()
141 	ret = devm_mfd_add_devices(&i2c->dev, PLATFORM_DEVID_AUTO,  in adp5585_i2c_probe()
145 		return dev_err_probe(&i2c->dev, ret,  in adp5585_i2c_probe()
153 	struct adp5585_dev *adp5585 = dev_get_drvdata(dev);  in adp5585_suspend()  local
155 	regcache_cache_only(adp5585->regmap, true);  in adp5585_suspend()
162 	struct adp5585_dev *adp5585 = dev_get_drvdata(dev);  in adp5585_resume()  local
164 	regcache_cache_only(adp5585->regmap, false);  in adp5585_resume()
165 	regcache_mark_dirty(adp5585->regmap);  in adp5585_resume()
167 	return regcache_sync(adp5585->regmap);  in adp5585_resume()
174 		.compatible = "adi,adp5585-00",
177 		.compatible = "adi,adp5585-01",
180 		.compatible = "adi,adp5585-02",
183 		.compatible = "adi,adp5585-03",
186 		.compatible = "adi,adp5585-04",
195 		.name = "adp5585",
203 MODULE_DESCRIPTION("ADP5585 core driver");