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-rw-r--r--drivers/hwmon/Kconfig21
-rw-r--r--drivers/hwmon/Makefile2
-rw-r--r--drivers/hwmon/wm831x-hwmon.c226
-rw-r--r--drivers/hwmon/wm8350-hwmon.c151
4 files changed, 400 insertions, 0 deletions
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index 461abb1e273a..ed7711d11ae8 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -946,6 +946,27 @@ config SENSORS_W83627EHF
946 This driver can also be built as a module. If so, the module 946 This driver can also be built as a module. If so, the module
947 will be called w83627ehf. 947 will be called w83627ehf.
948 948
949config SENSORS_WM831X
950 tristate "WM831x PMICs"
951 depends on MFD_WM831X
952 help
953 If you say yes here you get support for the hardware
954 monitoring functionality of the Wolfson Microelectronics
955 WM831x series of PMICs.
956
957 This driver can also be built as a module. If so, the module
958 will be called wm831x-hwmon.
959
960config SENSORS_WM8350
961 tristate "Wolfson Microelectronics WM835x"
962 depends on MFD_WM8350
963 help
964 If you say yes here you get support for the hardware
965 monitoring features of the WM835x series of PMICs.
966
967 This driver can also be built as a module. If so, the module
968 will be called wm8350-hwmon.
969
949config SENSORS_ULTRA45 970config SENSORS_ULTRA45
950 tristate "Sun Ultra45 PIC16F747" 971 tristate "Sun Ultra45 PIC16F747"
951 depends on SPARC64 972 depends on SPARC64
diff --git a/drivers/hwmon/Makefile b/drivers/hwmon/Makefile
index 2e547881bc0a..bcf73a9bb619 100644
--- a/drivers/hwmon/Makefile
+++ b/drivers/hwmon/Makefile
@@ -93,6 +93,8 @@ obj-$(CONFIG_SENSORS_VT8231) += vt8231.o
93obj-$(CONFIG_SENSORS_W83627EHF) += w83627ehf.o 93obj-$(CONFIG_SENSORS_W83627EHF) += w83627ehf.o
94obj-$(CONFIG_SENSORS_W83L785TS) += w83l785ts.o 94obj-$(CONFIG_SENSORS_W83L785TS) += w83l785ts.o
95obj-$(CONFIG_SENSORS_W83L786NG) += w83l786ng.o 95obj-$(CONFIG_SENSORS_W83L786NG) += w83l786ng.o
96obj-$(CONFIG_SENSORS_WM831X) += wm831x-hwmon.o
97obj-$(CONFIG_SENSORS_WM8350) += wm8350-hwmon.o
96 98
97ifeq ($(CONFIG_HWMON_DEBUG_CHIP),y) 99ifeq ($(CONFIG_HWMON_DEBUG_CHIP),y)
98EXTRA_CFLAGS += -DDEBUG 100EXTRA_CFLAGS += -DDEBUG
diff --git a/drivers/hwmon/wm831x-hwmon.c b/drivers/hwmon/wm831x-hwmon.c
new file mode 100644
index 000000000000..c16e9e74c356
--- /dev/null
+++ b/drivers/hwmon/wm831x-hwmon.c
@@ -0,0 +1,226 @@
1/*
2 * drivers/hwmon/wm831x-hwmon.c - Wolfson Microelectronics WM831x PMIC
3 * hardware monitoring features.
4 *
5 * Copyright (C) 2009 Wolfson Microelectronics plc
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License v2 as published by the
9 * Free Software Foundation.
10 *
11 * This program is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * more details.
15 *
16 * You should have received a copy of the GNU General Public License along with
17 * this program; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
19 */
20
21#include <linux/kernel.h>
22#include <linux/module.h>
23#include <linux/platform_device.h>
24#include <linux/err.h>
25#include <linux/hwmon.h>
26#include <linux/hwmon-sysfs.h>
27
28#include <linux/mfd/wm831x/core.h>
29#include <linux/mfd/wm831x/auxadc.h>
30
31struct wm831x_hwmon {
32 struct wm831x *wm831x;
33 struct device *classdev;
34};
35
36static ssize_t show_name(struct device *dev,
37 struct device_attribute *attr, char *buf)
38{
39 return sprintf(buf, "wm831x\n");
40}
41
42static const char *input_names[] = {
43 [WM831X_AUX_SYSVDD] = "SYSVDD",
44 [WM831X_AUX_USB] = "USB",
45 [WM831X_AUX_BKUP_BATT] = "Backup battery",
46 [WM831X_AUX_BATT] = "Battery",
47 [WM831X_AUX_WALL] = "WALL",
48 [WM831X_AUX_CHIP_TEMP] = "PMIC",
49 [WM831X_AUX_BATT_TEMP] = "Battery",
50};
51
52
53static ssize_t show_voltage(struct device *dev,
54 struct device_attribute *attr, char *buf)
55{
56 struct wm831x_hwmon *hwmon = dev_get_drvdata(dev);
57 int channel = to_sensor_dev_attr(attr)->index;
58 int ret;
59
60 ret = wm831x_auxadc_read_uv(hwmon->wm831x, channel);
61 if (ret < 0)
62 return ret;
63
64 return sprintf(buf, "%d\n", DIV_ROUND_CLOSEST(ret, 1000));
65}
66
67static ssize_t show_chip_temp(struct device *dev,
68 struct device_attribute *attr, char *buf)
69{
70 struct wm831x_hwmon *hwmon = dev_get_drvdata(dev);
71 int channel = to_sensor_dev_attr(attr)->index;
72 int ret;
73
74 ret = wm831x_auxadc_read(hwmon->wm831x, channel);
75 if (ret < 0)
76 return ret;
77
78 /* Degrees celsius = (512.18-ret) / 1.0983 */
79 ret = 512180 - (ret * 1000);
80 ret = DIV_ROUND_CLOSEST(ret * 10000, 10983);
81
82 return sprintf(buf, "%d\n", ret);
83}
84
85static ssize_t show_label(struct device *dev,
86 struct device_attribute *attr, char *buf)
87{
88 int channel = to_sensor_dev_attr(attr)->index;
89
90 return sprintf(buf, "%s\n", input_names[channel]);
91}
92
93#define WM831X_VOLTAGE(id, name) \
94 static SENSOR_DEVICE_ATTR(in##id##_input, S_IRUGO, show_voltage, \
95 NULL, name)
96
97#define WM831X_NAMED_VOLTAGE(id, name) \
98 WM831X_VOLTAGE(id, name); \
99 static SENSOR_DEVICE_ATTR(in##id##_label, S_IRUGO, show_label, \
100 NULL, name)
101
102static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
103
104WM831X_VOLTAGE(0, WM831X_AUX_AUX1);
105WM831X_VOLTAGE(1, WM831X_AUX_AUX2);
106WM831X_VOLTAGE(2, WM831X_AUX_AUX3);
107WM831X_VOLTAGE(3, WM831X_AUX_AUX4);
108
109WM831X_NAMED_VOLTAGE(4, WM831X_AUX_SYSVDD);
110WM831X_NAMED_VOLTAGE(5, WM831X_AUX_USB);
111WM831X_NAMED_VOLTAGE(6, WM831X_AUX_BATT);
112WM831X_NAMED_VOLTAGE(7, WM831X_AUX_WALL);
113WM831X_NAMED_VOLTAGE(8, WM831X_AUX_BKUP_BATT);
114
115static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_chip_temp, NULL,
116 WM831X_AUX_CHIP_TEMP);
117static SENSOR_DEVICE_ATTR(temp1_label, S_IRUGO, show_label, NULL,
118 WM831X_AUX_CHIP_TEMP);
119/* Report as a voltage since conversion depends on external components
120 * and that's what the ABI wants. */
121static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_voltage, NULL,
122 WM831X_AUX_BATT_TEMP);
123static SENSOR_DEVICE_ATTR(temp2_label, S_IRUGO, show_label, NULL,
124 WM831X_AUX_BATT_TEMP);
125
126static struct attribute *wm831x_attributes[] = {
127 &dev_attr_name.attr,
128
129 &sensor_dev_attr_in0_input.dev_attr.attr,
130 &sensor_dev_attr_in1_input.dev_attr.attr,
131 &sensor_dev_attr_in2_input.dev_attr.attr,
132 &sensor_dev_attr_in3_input.dev_attr.attr,
133
134 &sensor_dev_attr_in4_input.dev_attr.attr,
135 &sensor_dev_attr_in4_label.dev_attr.attr,
136 &sensor_dev_attr_in5_input.dev_attr.attr,
137 &sensor_dev_attr_in5_label.dev_attr.attr,
138 &sensor_dev_attr_in6_input.dev_attr.attr,
139 &sensor_dev_attr_in6_label.dev_attr.attr,
140 &sensor_dev_attr_in7_input.dev_attr.attr,
141 &sensor_dev_attr_in7_label.dev_attr.attr,
142 &sensor_dev_attr_in8_input.dev_attr.attr,
143 &sensor_dev_attr_in8_label.dev_attr.attr,
144
145 &sensor_dev_attr_temp1_input.dev_attr.attr,
146 &sensor_dev_attr_temp1_label.dev_attr.attr,
147 &sensor_dev_attr_temp2_input.dev_attr.attr,
148 &sensor_dev_attr_temp2_label.dev_attr.attr,
149
150 NULL
151};
152
153static const struct attribute_group wm831x_attr_group = {
154 .attrs = wm831x_attributes,
155};
156
157static int __devinit wm831x_hwmon_probe(struct platform_device *pdev)
158{
159 struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent);
160 struct wm831x_hwmon *hwmon;
161 int ret;
162
163 hwmon = kzalloc(sizeof(struct wm831x_hwmon), GFP_KERNEL);
164 if (!hwmon)
165 return -ENOMEM;
166
167 hwmon->wm831x = wm831x;
168
169 ret = sysfs_create_group(&pdev->dev.kobj, &wm831x_attr_group);
170 if (ret)
171 goto err;
172
173 hwmon->classdev = hwmon_device_register(&pdev->dev);
174 if (IS_ERR(hwmon->classdev)) {
175 ret = PTR_ERR(hwmon->classdev);
176 goto err_sysfs;
177 }
178
179 platform_set_drvdata(pdev, hwmon);
180
181 return 0;
182
183err_sysfs:
184 sysfs_remove_group(&pdev->dev.kobj, &wm831x_attr_group);
185err:
186 kfree(hwmon);
187 return ret;
188}
189
190static int __devexit wm831x_hwmon_remove(struct platform_device *pdev)
191{
192 struct wm831x_hwmon *hwmon = platform_get_drvdata(pdev);
193
194 hwmon_device_unregister(hwmon->classdev);
195 sysfs_remove_group(&pdev->dev.kobj, &wm831x_attr_group);
196 platform_set_drvdata(pdev, NULL);
197 kfree(hwmon);
198
199 return 0;
200}
201
202static struct platform_driver wm831x_hwmon_driver = {
203 .probe = wm831x_hwmon_probe,
204 .remove = __devexit_p(wm831x_hwmon_remove),
205 .driver = {
206 .name = "wm831x-hwmon",
207 .owner = THIS_MODULE,
208 },
209};
210
211static int __init wm831x_hwmon_init(void)
212{
213 return platform_driver_register(&wm831x_hwmon_driver);
214}
215module_init(wm831x_hwmon_init);
216
217static void __exit wm831x_hwmon_exit(void)
218{
219 platform_driver_unregister(&wm831x_hwmon_driver);
220}
221module_exit(wm831x_hwmon_exit);
222
223MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
224MODULE_DESCRIPTION("WM831x Hardware Monitoring");
225MODULE_LICENSE("GPL");
226MODULE_ALIAS("platform:wm831x-hwmon");
diff --git a/drivers/hwmon/wm8350-hwmon.c b/drivers/hwmon/wm8350-hwmon.c
new file mode 100644
index 000000000000..13290595ca86
--- /dev/null
+++ b/drivers/hwmon/wm8350-hwmon.c
@@ -0,0 +1,151 @@
1/*
2 * drivers/hwmon/wm8350-hwmon.c - Wolfson Microelectronics WM8350 PMIC
3 * hardware monitoring features.
4 *
5 * Copyright (C) 2009 Wolfson Microelectronics plc
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License v2 as published by the
9 * Free Software Foundation.
10 *
11 * This program is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * more details.
15 *
16 * You should have received a copy of the GNU General Public License along with
17 * this program; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
19 */
20
21#include <linux/kernel.h>
22#include <linux/module.h>
23#include <linux/err.h>
24#include <linux/platform_device.h>
25#include <linux/hwmon.h>
26#include <linux/hwmon-sysfs.h>
27
28#include <linux/mfd/wm8350/core.h>
29#include <linux/mfd/wm8350/comparator.h>
30
31static ssize_t show_name(struct device *dev,
32 struct device_attribute *attr, char *buf)
33{
34 return sprintf(buf, "wm8350\n");
35}
36
37static const char *input_names[] = {
38 [WM8350_AUXADC_USB] = "USB",
39 [WM8350_AUXADC_LINE] = "Line",
40 [WM8350_AUXADC_BATT] = "Battery",
41};
42
43
44static ssize_t show_voltage(struct device *dev,
45 struct device_attribute *attr, char *buf)
46{
47 struct wm8350 *wm8350 = dev_get_drvdata(dev);
48 int channel = to_sensor_dev_attr(attr)->index;
49 int val;
50
51 val = wm8350_read_auxadc(wm8350, channel, 0, 0) * WM8350_AUX_COEFF;
52 val = DIV_ROUND_CLOSEST(val, 1000);
53
54 return sprintf(buf, "%d\n", val);
55}
56
57static ssize_t show_label(struct device *dev,
58 struct device_attribute *attr, char *buf)
59{
60 int channel = to_sensor_dev_attr(attr)->index;
61
62 return sprintf(buf, "%s\n", input_names[channel]);
63}
64
65#define WM8350_NAMED_VOLTAGE(id, name) \
66 static SENSOR_DEVICE_ATTR(in##id##_input, S_IRUGO, show_voltage,\
67 NULL, name); \
68 static SENSOR_DEVICE_ATTR(in##id##_label, S_IRUGO, show_label, \
69 NULL, name)
70
71static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
72
73WM8350_NAMED_VOLTAGE(0, WM8350_AUXADC_USB);
74WM8350_NAMED_VOLTAGE(1, WM8350_AUXADC_BATT);
75WM8350_NAMED_VOLTAGE(2, WM8350_AUXADC_LINE);
76
77static struct attribute *wm8350_attributes[] = {
78 &dev_attr_name.attr,
79
80 &sensor_dev_attr_in0_input.dev_attr.attr,
81 &sensor_dev_attr_in0_label.dev_attr.attr,
82 &sensor_dev_attr_in1_input.dev_attr.attr,
83 &sensor_dev_attr_in1_label.dev_attr.attr,
84 &sensor_dev_attr_in2_input.dev_attr.attr,
85 &sensor_dev_attr_in2_label.dev_attr.attr,
86
87 NULL,
88};
89
90static const struct attribute_group wm8350_attr_group = {
91 .attrs = wm8350_attributes,
92};
93
94static int __devinit wm8350_hwmon_probe(struct platform_device *pdev)
95{
96 struct wm8350 *wm8350 = platform_get_drvdata(pdev);
97 int ret;
98
99 ret = sysfs_create_group(&pdev->dev.kobj, &wm8350_attr_group);
100 if (ret)
101 goto err;
102
103 wm8350->hwmon.classdev = hwmon_device_register(&pdev->dev);
104 if (IS_ERR(wm8350->hwmon.classdev)) {
105 ret = PTR_ERR(wm8350->hwmon.classdev);
106 goto err_group;
107 }
108
109 return 0;
110
111err_group:
112 sysfs_remove_group(&pdev->dev.kobj, &wm8350_attr_group);
113err:
114 return ret;
115}
116
117static int __devexit wm8350_hwmon_remove(struct platform_device *pdev)
118{
119 struct wm8350 *wm8350 = platform_get_drvdata(pdev);
120
121 hwmon_device_unregister(wm8350->hwmon.classdev);
122 sysfs_remove_group(&pdev->dev.kobj, &wm8350_attr_group);
123
124 return 0;
125}
126
127static struct platform_driver wm8350_hwmon_driver = {
128 .probe = wm8350_hwmon_probe,
129 .remove = __devexit_p(wm8350_hwmon_remove),
130 .driver = {
131 .name = "wm8350-hwmon",
132 .owner = THIS_MODULE,
133 },
134};
135
136static int __init wm8350_hwmon_init(void)
137{
138 return platform_driver_register(&wm8350_hwmon_driver);
139}
140module_init(wm8350_hwmon_init);
141
142static void __exit wm8350_hwmon_exit(void)
143{
144 platform_driver_unregister(&wm8350_hwmon_driver);
145}
146module_exit(wm8350_hwmon_exit);
147
148MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
149MODULE_DESCRIPTION("WM8350 Hardware Monitoring");
150MODULE_LICENSE("GPL");
151MODULE_ALIAS("platform:wm8350-hwmon");
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-15 19:20:41 -0500