drivers/mfd/rt5033.c

1 // SPDX-License-Identifier: GPL-2.0-only
5  * RT5033 comprises multiple sub-devices switcing charger, fuel gauge,
6  * flash LED, current source, LDO and BUCK regulators.
18 #include <linux/mfd/rt5033-private.h>
40 	{ .name = "rt5033-regulator", },
42 		.name = "rt5033-charger",
43 		.of_compatible = "richtek,rt5033-charger",
45 		.name = "rt5033-battery",
46 		.of_compatible = "richtek,rt5033-battery",
48 		.name = "rt5033-led",
49 		.of_compatible = "richtek,rt5033-led",
66 	rt5033 = devm_kzalloc(&i2c->dev, sizeof(*rt5033), GFP_KERNEL);  in rt5033_i2c_probe()
68 		return -ENOMEM;  in rt5033_i2c_probe()
71 	rt5033->dev = &i2c->dev;  in rt5033_i2c_probe()
72 	rt5033->irq = i2c->irq;  in rt5033_i2c_probe()
73 	rt5033->wakeup = true;  in rt5033_i2c_probe()
75 	rt5033->regmap = devm_regmap_init_i2c(i2c, &rt5033_regmap_config);  in rt5033_i2c_probe()
76 	if (IS_ERR(rt5033->regmap)) {  in rt5033_i2c_probe()
77 		dev_err(&i2c->dev, "Failed to allocate register map.\n");  in rt5033_i2c_probe()
78 		return PTR_ERR(rt5033->regmap);  in rt5033_i2c_probe()
81 	ret = regmap_read(rt5033->regmap, RT5033_REG_DEVICE_ID, &dev_id);  in rt5033_i2c_probe()
83 		dev_err(&i2c->dev, "Device not found\n");  in rt5033_i2c_probe()
84 		return -ENODEV;  in rt5033_i2c_probe()
86 	dev_info(&i2c->dev, "Device found Device ID: %04x\n", dev_id);  in rt5033_i2c_probe()
88 	ret = regmap_add_irq_chip(rt5033->regmap, rt5033->irq,  in rt5033_i2c_probe()
90 			0, &rt5033_irq_chip, &rt5033->irq_data);  in rt5033_i2c_probe()
92 		dev_err(&i2c->dev, "Failed to request IRQ %d: %d\n",  in rt5033_i2c_probe()
93 							rt5033->irq, ret);  in rt5033_i2c_probe()
97 	ret = devm_mfd_add_devices(rt5033->dev, -1, rt5033_devs,  in rt5033_i2c_probe()
99 				   regmap_irq_get_domain(rt5033->irq_data));  in rt5033_i2c_probe()
101 		dev_err(&i2c->dev, "Failed to add RT5033 child devices.\n");  in rt5033_i2c_probe()
105 	device_init_wakeup(rt5033->dev, rt5033->wakeup);  in rt5033_i2c_probe()
132 MODULE_DESCRIPTION("Richtek RT5033 multi-function core driver");