drivers/hwmon/sl28cpld-hwmon.c

1 // SPDX-License-Identifier: GPL-2.0-only
43 		ret = regmap_read(hwmon->regmap, hwmon->offset + FAN_INPUT,  in sl28cpld_hwmon_read()
57 		 * says we should asssume 2 pulses per revolution.  in sl28cpld_hwmon_read()
63 		return -EOPNOTSUPP;  in sl28cpld_hwmon_read()
101 	if (!pdev->dev.parent)  in sl28cpld_hwmon_probe()
102 		return -ENODEV;  in sl28cpld_hwmon_probe()
104 	hwmon = devm_kzalloc(&pdev->dev, sizeof(*hwmon), GFP_KERNEL);  in sl28cpld_hwmon_probe()
106 		return -ENOMEM;  in sl28cpld_hwmon_probe()
108 	hwmon->regmap = dev_get_regmap(pdev->dev.parent, NULL);  in sl28cpld_hwmon_probe()
109 	if (!hwmon->regmap)  in sl28cpld_hwmon_probe()
110 		return -ENODEV;  in sl28cpld_hwmon_probe()
112 	ret = device_property_read_u32(&pdev->dev, "reg", &hwmon->offset);  in sl28cpld_hwmon_probe()
114 		return -EINVAL;  in sl28cpld_hwmon_probe()
116 	hwmon_dev = devm_hwmon_device_register_with_info(&pdev->dev,  in sl28cpld_hwmon_probe()
120 		dev_err(&pdev->dev, "failed to register as hwmon device");  in sl28cpld_hwmon_probe()
126 	{ .compatible = "kontron,sl28cpld-fan" },
134 		.name = "sl28cpld-fan",