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21eb0be9ac
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license v2 as published by the free software foundation this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 51 franklin street fifth floor boston ma 02110 1301 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190529141334.424952652@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
93 lines
2.5 KiB
C
93 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* drivers/hwmon/wm8350-hwmon.c - Wolfson Microelectronics WM8350 PMIC
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* hardware monitoring features.
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*
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* Copyright (C) 2009 Wolfson Microelectronics plc
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/err.h>
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#include <linux/platform_device.h>
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#include <linux/hwmon.h>
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#include <linux/hwmon-sysfs.h>
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#include <linux/mfd/wm8350/core.h>
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#include <linux/mfd/wm8350/comparator.h>
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static const char * const input_names[] = {
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[WM8350_AUXADC_USB] = "USB",
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[WM8350_AUXADC_LINE] = "Line",
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[WM8350_AUXADC_BATT] = "Battery",
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};
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static ssize_t show_voltage(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct wm8350 *wm8350 = dev_get_drvdata(dev);
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int channel = to_sensor_dev_attr(attr)->index;
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int val;
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val = wm8350_read_auxadc(wm8350, channel, 0, 0) * WM8350_AUX_COEFF;
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val = DIV_ROUND_CLOSEST(val, 1000);
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return sprintf(buf, "%d\n", val);
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}
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static ssize_t show_label(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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int channel = to_sensor_dev_attr(attr)->index;
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return sprintf(buf, "%s\n", input_names[channel]);
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}
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#define WM8350_NAMED_VOLTAGE(id, name) \
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static SENSOR_DEVICE_ATTR(in##id##_input, S_IRUGO, show_voltage,\
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NULL, name); \
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static SENSOR_DEVICE_ATTR(in##id##_label, S_IRUGO, show_label, \
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NULL, name)
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WM8350_NAMED_VOLTAGE(0, WM8350_AUXADC_USB);
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WM8350_NAMED_VOLTAGE(1, WM8350_AUXADC_BATT);
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WM8350_NAMED_VOLTAGE(2, WM8350_AUXADC_LINE);
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static struct attribute *wm8350_attrs[] = {
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&sensor_dev_attr_in0_input.dev_attr.attr,
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&sensor_dev_attr_in0_label.dev_attr.attr,
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&sensor_dev_attr_in1_input.dev_attr.attr,
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&sensor_dev_attr_in1_label.dev_attr.attr,
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&sensor_dev_attr_in2_input.dev_attr.attr,
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&sensor_dev_attr_in2_label.dev_attr.attr,
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NULL,
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};
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ATTRIBUTE_GROUPS(wm8350);
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static int wm8350_hwmon_probe(struct platform_device *pdev)
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{
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struct wm8350 *wm8350 = platform_get_drvdata(pdev);
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struct device *hwmon_dev;
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hwmon_dev = devm_hwmon_device_register_with_groups(&pdev->dev, "wm8350",
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wm8350,
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wm8350_groups);
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return PTR_ERR_OR_ZERO(hwmon_dev);
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}
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static struct platform_driver wm8350_hwmon_driver = {
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.probe = wm8350_hwmon_probe,
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.driver = {
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.name = "wm8350-hwmon",
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},
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};
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module_platform_driver(wm8350_hwmon_driver);
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MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
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MODULE_DESCRIPTION("WM8350 Hardware Monitoring");
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("platform:wm8350-hwmon");
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