a68abd32b9
Constify fixed string array and make checkpatch happy. Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
141 lines
3.8 KiB
C
141 lines
3.8 KiB
C
/*
|
|
* drivers/hwmon/wm8350-hwmon.c - Wolfson Microelectronics WM8350 PMIC
|
|
* hardware monitoring features.
|
|
*
|
|
* Copyright (C) 2009 Wolfson Microelectronics plc
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/err.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/hwmon.h>
|
|
#include <linux/hwmon-sysfs.h>
|
|
|
|
#include <linux/mfd/wm8350/core.h>
|
|
#include <linux/mfd/wm8350/comparator.h>
|
|
|
|
static ssize_t show_name(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
return sprintf(buf, "wm8350\n");
|
|
}
|
|
|
|
static const char * const input_names[] = {
|
|
[WM8350_AUXADC_USB] = "USB",
|
|
[WM8350_AUXADC_LINE] = "Line",
|
|
[WM8350_AUXADC_BATT] = "Battery",
|
|
};
|
|
|
|
|
|
static ssize_t show_voltage(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct wm8350 *wm8350 = dev_get_drvdata(dev);
|
|
int channel = to_sensor_dev_attr(attr)->index;
|
|
int val;
|
|
|
|
val = wm8350_read_auxadc(wm8350, channel, 0, 0) * WM8350_AUX_COEFF;
|
|
val = DIV_ROUND_CLOSEST(val, 1000);
|
|
|
|
return sprintf(buf, "%d\n", val);
|
|
}
|
|
|
|
static ssize_t show_label(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
int channel = to_sensor_dev_attr(attr)->index;
|
|
|
|
return sprintf(buf, "%s\n", input_names[channel]);
|
|
}
|
|
|
|
#define WM8350_NAMED_VOLTAGE(id, name) \
|
|
static SENSOR_DEVICE_ATTR(in##id##_input, S_IRUGO, show_voltage,\
|
|
NULL, name); \
|
|
static SENSOR_DEVICE_ATTR(in##id##_label, S_IRUGO, show_label, \
|
|
NULL, name)
|
|
|
|
static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
|
|
|
|
WM8350_NAMED_VOLTAGE(0, WM8350_AUXADC_USB);
|
|
WM8350_NAMED_VOLTAGE(1, WM8350_AUXADC_BATT);
|
|
WM8350_NAMED_VOLTAGE(2, WM8350_AUXADC_LINE);
|
|
|
|
static struct attribute *wm8350_attributes[] = {
|
|
&dev_attr_name.attr,
|
|
|
|
&sensor_dev_attr_in0_input.dev_attr.attr,
|
|
&sensor_dev_attr_in0_label.dev_attr.attr,
|
|
&sensor_dev_attr_in1_input.dev_attr.attr,
|
|
&sensor_dev_attr_in1_label.dev_attr.attr,
|
|
&sensor_dev_attr_in2_input.dev_attr.attr,
|
|
&sensor_dev_attr_in2_label.dev_attr.attr,
|
|
|
|
NULL,
|
|
};
|
|
|
|
static const struct attribute_group wm8350_attr_group = {
|
|
.attrs = wm8350_attributes,
|
|
};
|
|
|
|
static int __devinit wm8350_hwmon_probe(struct platform_device *pdev)
|
|
{
|
|
struct wm8350 *wm8350 = platform_get_drvdata(pdev);
|
|
int ret;
|
|
|
|
ret = sysfs_create_group(&pdev->dev.kobj, &wm8350_attr_group);
|
|
if (ret)
|
|
goto err;
|
|
|
|
wm8350->hwmon.classdev = hwmon_device_register(&pdev->dev);
|
|
if (IS_ERR(wm8350->hwmon.classdev)) {
|
|
ret = PTR_ERR(wm8350->hwmon.classdev);
|
|
goto err_group;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_group:
|
|
sysfs_remove_group(&pdev->dev.kobj, &wm8350_attr_group);
|
|
err:
|
|
return ret;
|
|
}
|
|
|
|
static int __devexit wm8350_hwmon_remove(struct platform_device *pdev)
|
|
{
|
|
struct wm8350 *wm8350 = platform_get_drvdata(pdev);
|
|
|
|
hwmon_device_unregister(wm8350->hwmon.classdev);
|
|
sysfs_remove_group(&pdev->dev.kobj, &wm8350_attr_group);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver wm8350_hwmon_driver = {
|
|
.probe = wm8350_hwmon_probe,
|
|
.remove = __devexit_p(wm8350_hwmon_remove),
|
|
.driver = {
|
|
.name = "wm8350-hwmon",
|
|
.owner = THIS_MODULE,
|
|
},
|
|
};
|
|
|
|
module_platform_driver(wm8350_hwmon_driver);
|
|
|
|
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
|
|
MODULE_DESCRIPTION("WM8350 Hardware Monitoring");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_ALIAS("platform:wm8350-hwmon");
|