From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- drivers/hwmon/wm8350-hwmon.c | 92 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 92 insertions(+) create mode 100644 drivers/hwmon/wm8350-hwmon.c (limited to 'drivers/hwmon/wm8350-hwmon.c') diff --git a/drivers/hwmon/wm8350-hwmon.c b/drivers/hwmon/wm8350-hwmon.c new file mode 100644 index 0000000000..10e17bb798 --- /dev/null +++ b/drivers/hwmon/wm8350-hwmon.c @@ -0,0 +1,92 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * drivers/hwmon/wm8350-hwmon.c - Wolfson Microelectronics WM8350 PMIC + * hardware monitoring features. + * + * Copyright (C) 2009 Wolfson Microelectronics plc + */ + +#include +#include +#include +#include +#include +#include + +#include +#include + +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) + +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_attrs[] = { + &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, +}; + +ATTRIBUTE_GROUPS(wm8350); + +static int wm8350_hwmon_probe(struct platform_device *pdev) +{ + struct wm8350 *wm8350 = platform_get_drvdata(pdev); + struct device *hwmon_dev; + + hwmon_dev = devm_hwmon_device_register_with_groups(&pdev->dev, "wm8350", + wm8350, + wm8350_groups); + return PTR_ERR_OR_ZERO(hwmon_dev); +} + +static struct platform_driver wm8350_hwmon_driver = { + .probe = wm8350_hwmon_probe, + .driver = { + .name = "wm8350-hwmon", + }, +}; + +module_platform_driver(wm8350_hwmon_driver); + +MODULE_AUTHOR("Mark Brown "); +MODULE_DESCRIPTION("WM8350 Hardware Monitoring"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:wm8350-hwmon"); -- cgit v1.2.3