kernel: update kernel 3.18 to version 3.18.23
[openwrt/staging/chunkeey.git] / target / linux / generic / patches-3.18 / 880-gateworks_system_controller.patch
1 --- a/drivers/hwmon/Kconfig
2 +++ b/drivers/hwmon/Kconfig
3 @@ -507,6 +507,15 @@ config SENSORS_G762
4 This driver can also be built as a module. If so, the module
5 will be called g762.
6
7 +config SENSORS_GSC
8 + tristate "Gateworks System Controller"
9 + depends on I2C
10 + help
11 + If you say yes here you get support for the Gateworks System Controller.
12 +
13 + This driver can also be built as a module. If so, the module
14 + will be called gsc.
15 +
16 config SENSORS_GPIO_FAN
17 tristate "GPIO fan"
18 depends on GPIOLIB
19 --- a/drivers/hwmon/Makefile
20 +++ b/drivers/hwmon/Makefile
21 @@ -153,6 +153,7 @@ obj-$(CONFIG_SENSORS_W83L785TS) += w83l7
22 obj-$(CONFIG_SENSORS_W83L786NG) += w83l786ng.o
23 obj-$(CONFIG_SENSORS_WM831X) += wm831x-hwmon.o
24 obj-$(CONFIG_SENSORS_WM8350) += wm8350-hwmon.o
25 +obj-$(CONFIG_SENSORS_GSC) += gsc.o
26
27 obj-$(CONFIG_PMBUS) += pmbus/
28
29 --- /dev/null
30 +++ b/drivers/hwmon/gsc.c
31 @@ -0,0 +1,308 @@
32 +/*
33 + * A hwmon driver for the Gateworks System Controller
34 + * Copyright (C) 2009 Gateworks Corporation
35 + *
36 + * Author: Chris Lang <clang@gateworks.com>
37 + *
38 + * This program is free software; you can redistribute it and/or modify
39 + * it under the terms of the GNU General Public License,
40 + * as published by the Free Software Foundation - version 2.
41 + */
42 +
43 +#include <linux/module.h>
44 +#include <linux/i2c.h>
45 +#include <linux/hwmon.h>
46 +#include <linux/hwmon-sysfs.h>
47 +#include <linux/err.h>
48 +#include <linux/slab.h>
49 +
50 +#define DRV_VERSION "0.2"
51 +
52 +enum chips { gsp };
53 +
54 +/* AD7418 registers */
55 +#define GSP_REG_TEMP_IN 0x00
56 +#define GSP_REG_VIN 0x02
57 +#define GSP_REG_3P3 0x05
58 +#define GSP_REG_BAT 0x08
59 +#define GSP_REG_5P0 0x0b
60 +#define GSP_REG_CORE 0x0e
61 +#define GSP_REG_CPU1 0x11
62 +#define GSP_REG_CPU2 0x14
63 +#define GSP_REG_DRAM 0x17
64 +#define GSP_REG_EXT_BAT 0x1a
65 +#define GSP_REG_IO1 0x1d
66 +#define GSP_REG_IO2 0x20
67 +#define GSP_REG_PCIE 0x23
68 +#define GSP_REG_CURRENT 0x26
69 +#define GSP_FAN_0 0x2C
70 +#define GSP_FAN_1 0x2E
71 +#define GSP_FAN_2 0x30
72 +#define GSP_FAN_3 0x32
73 +#define GSP_FAN_4 0x34
74 +#define GSP_FAN_5 0x36
75 +
76 +struct gsp_sensor_info {
77 + const char* name;
78 + int reg;
79 +};
80 +
81 +static const struct gsp_sensor_info gsp_sensors[] = {
82 + {"temp", GSP_REG_TEMP_IN},
83 + {"vin", GSP_REG_VIN},
84 + {"3p3", GSP_REG_3P3},
85 + {"bat", GSP_REG_BAT},
86 + {"5p0", GSP_REG_5P0},
87 + {"core", GSP_REG_CORE},
88 + {"cpu1", GSP_REG_CPU1},
89 + {"cpu2", GSP_REG_CPU2},
90 + {"dram", GSP_REG_DRAM},
91 + {"ext_bat", GSP_REG_EXT_BAT},
92 + {"io1", GSP_REG_IO1},
93 + {"io2", GSP_REG_IO2},
94 + {"pci2", GSP_REG_PCIE},
95 + {"current", GSP_REG_CURRENT},
96 + {"fan_point0", GSP_FAN_0},
97 + {"fan_point1", GSP_FAN_1},
98 + {"fan_point2", GSP_FAN_2},
99 + {"fan_point3", GSP_FAN_3},
100 + {"fan_point4", GSP_FAN_4},
101 + {"fan_point5", GSP_FAN_5},
102 +};
103 +
104 +struct gsp_data {
105 + struct device *hwmon_dev;
106 + struct attribute_group attrs;
107 + enum chips type;
108 +};
109 +
110 +static int gsp_probe(struct i2c_client *client,
111 + const struct i2c_device_id *id);
112 +static int gsp_remove(struct i2c_client *client);
113 +
114 +static const struct i2c_device_id gsp_id[] = {
115 + { "gsp", 0 },
116 + { }
117 +};
118 +MODULE_DEVICE_TABLE(i2c, gsp_id);
119 +
120 +static struct i2c_driver gsp_driver = {
121 + .driver = {
122 + .name = "gsp",
123 + },
124 + .probe = gsp_probe,
125 + .remove = gsp_remove,
126 + .id_table = gsp_id,
127 +};
128 +
129 +/* All registers are word-sized, except for the configuration registers.
130 + * AD7418 uses a high-byte first convention. Do NOT use those functions to
131 + * access the configuration registers CONF and CONF2, as they are byte-sized.
132 + */
133 +static inline int gsp_read(struct i2c_client *client, u8 reg)
134 +{
135 + unsigned int adc = 0;
136 + if (reg == GSP_REG_TEMP_IN || reg > GSP_REG_CURRENT)
137 + {
138 + adc |= i2c_smbus_read_byte_data(client, reg);
139 + adc |= i2c_smbus_read_byte_data(client, reg + 1) << 8;
140 + return adc;
141 + }
142 + else
143 + {
144 + adc |= i2c_smbus_read_byte_data(client, reg);
145 + adc |= i2c_smbus_read_byte_data(client, reg + 1) << 8;
146 + adc |= i2c_smbus_read_byte_data(client, reg + 2) << 16;
147 + return adc;
148 + }
149 +}
150 +
151 +static inline int gsp_write(struct i2c_client *client, u8 reg, u16 value)
152 +{
153 + i2c_smbus_write_byte_data(client, reg, value & 0xff);
154 + i2c_smbus_write_byte_data(client, reg + 1, ((value >> 8) & 0xff));
155 + return 1;
156 +}
157 +
158 +static ssize_t show_adc(struct device *dev, struct device_attribute *devattr,
159 + char *buf)
160 +{
161 + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
162 + struct i2c_client *client = to_i2c_client(dev);
163 + return sprintf(buf, "%d\n", gsp_read(client, gsp_sensors[attr->index].reg));
164 +}
165 +
166 +static ssize_t show_label(struct device *dev,
167 + struct device_attribute *devattr, char *buf)
168 +{
169 + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
170 +
171 + return sprintf(buf, "%s\n", gsp_sensors[attr->index].name);
172 +}
173 +
174 +static ssize_t store_fan(struct device *dev,
175 + struct device_attribute *devattr, const char *buf, size_t count)
176 +{
177 + u16 val;
178 + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
179 + struct i2c_client *client = to_i2c_client(dev);
180 + val = simple_strtoul(buf, NULL, 10);
181 + gsp_write(client, gsp_sensors[attr->index].reg, val);
182 + return count;
183 +}
184 +
185 +static SENSOR_DEVICE_ATTR(temp0_input, S_IRUGO, show_adc, NULL, 0);
186 +static SENSOR_DEVICE_ATTR(temp0_label, S_IRUGO, show_label, NULL, 0);
187 +
188 +static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_adc, NULL, 1);
189 +static SENSOR_DEVICE_ATTR(in0_label, S_IRUGO, show_label, NULL, 1);
190 +static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_adc, NULL, 2);
191 +static SENSOR_DEVICE_ATTR(in1_label, S_IRUGO, show_label, NULL, 2);
192 +static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_adc, NULL, 3);
193 +static SENSOR_DEVICE_ATTR(in2_label, S_IRUGO, show_label, NULL, 3);
194 +static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_adc, NULL, 4);
195 +static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_label, NULL, 4);
196 +static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, show_adc, NULL, 5);
197 +static SENSOR_DEVICE_ATTR(in4_label, S_IRUGO, show_label, NULL, 5);
198 +static SENSOR_DEVICE_ATTR(in5_input, S_IRUGO, show_adc, NULL, 6);
199 +static SENSOR_DEVICE_ATTR(in5_label, S_IRUGO, show_label, NULL, 6);
200 +static SENSOR_DEVICE_ATTR(in6_input, S_IRUGO, show_adc, NULL, 7);
201 +static SENSOR_DEVICE_ATTR(in6_label, S_IRUGO, show_label, NULL, 7);
202 +static SENSOR_DEVICE_ATTR(in7_input, S_IRUGO, show_adc, NULL, 8);
203 +static SENSOR_DEVICE_ATTR(in7_label, S_IRUGO, show_label, NULL, 8);
204 +static SENSOR_DEVICE_ATTR(in8_input, S_IRUGO, show_adc, NULL, 9);
205 +static SENSOR_DEVICE_ATTR(in8_label, S_IRUGO, show_label, NULL, 9);
206 +static SENSOR_DEVICE_ATTR(in9_input, S_IRUGO, show_adc, NULL, 10);
207 +static SENSOR_DEVICE_ATTR(in9_label, S_IRUGO, show_label, NULL, 10);
208 +static SENSOR_DEVICE_ATTR(in10_input, S_IRUGO, show_adc, NULL, 11);
209 +static SENSOR_DEVICE_ATTR(in10_label, S_IRUGO, show_label, NULL, 11);
210 +static SENSOR_DEVICE_ATTR(in11_input, S_IRUGO, show_adc, NULL, 12);
211 +static SENSOR_DEVICE_ATTR(in11_label, S_IRUGO, show_label, NULL, 12);
212 +static SENSOR_DEVICE_ATTR(in12_input, S_IRUGO, show_adc, NULL, 13);
213 +static SENSOR_DEVICE_ATTR(in12_label, S_IRUGO, show_label, NULL, 13);
214 +
215 +static SENSOR_DEVICE_ATTR(fan0_point0, S_IRUGO | S_IWUSR, show_adc, store_fan, 14);
216 +static SENSOR_DEVICE_ATTR(fan0_point1, S_IRUGO | S_IWUSR, show_adc, store_fan, 15);
217 +static SENSOR_DEVICE_ATTR(fan0_point2, S_IRUGO | S_IWUSR, show_adc, store_fan, 16);
218 +static SENSOR_DEVICE_ATTR(fan0_point3, S_IRUGO | S_IWUSR, show_adc, store_fan, 17);
219 +static SENSOR_DEVICE_ATTR(fan0_point4, S_IRUGO | S_IWUSR, show_adc, store_fan, 18);
220 +static SENSOR_DEVICE_ATTR(fan0_point5, S_IRUGO | S_IWUSR, show_adc, store_fan, 19);
221 +
222 +static struct attribute *gsp_attributes[] = {
223 + &sensor_dev_attr_temp0_input.dev_attr.attr,
224 + &sensor_dev_attr_in0_input.dev_attr.attr,
225 + &sensor_dev_attr_in1_input.dev_attr.attr,
226 + &sensor_dev_attr_in2_input.dev_attr.attr,
227 + &sensor_dev_attr_in3_input.dev_attr.attr,
228 + &sensor_dev_attr_in4_input.dev_attr.attr,
229 + &sensor_dev_attr_in5_input.dev_attr.attr,
230 + &sensor_dev_attr_in6_input.dev_attr.attr,
231 + &sensor_dev_attr_in7_input.dev_attr.attr,
232 + &sensor_dev_attr_in8_input.dev_attr.attr,
233 + &sensor_dev_attr_in9_input.dev_attr.attr,
234 + &sensor_dev_attr_in10_input.dev_attr.attr,
235 + &sensor_dev_attr_in11_input.dev_attr.attr,
236 + &sensor_dev_attr_in12_input.dev_attr.attr,
237 +
238 + &sensor_dev_attr_temp0_label.dev_attr.attr,
239 + &sensor_dev_attr_in0_label.dev_attr.attr,
240 + &sensor_dev_attr_in1_label.dev_attr.attr,
241 + &sensor_dev_attr_in2_label.dev_attr.attr,
242 + &sensor_dev_attr_in3_label.dev_attr.attr,
243 + &sensor_dev_attr_in4_label.dev_attr.attr,
244 + &sensor_dev_attr_in5_label.dev_attr.attr,
245 + &sensor_dev_attr_in6_label.dev_attr.attr,
246 + &sensor_dev_attr_in7_label.dev_attr.attr,
247 + &sensor_dev_attr_in8_label.dev_attr.attr,
248 + &sensor_dev_attr_in9_label.dev_attr.attr,
249 + &sensor_dev_attr_in10_label.dev_attr.attr,
250 + &sensor_dev_attr_in11_label.dev_attr.attr,
251 + &sensor_dev_attr_in12_label.dev_attr.attr,
252 +
253 + &sensor_dev_attr_fan0_point0.dev_attr.attr,
254 + &sensor_dev_attr_fan0_point1.dev_attr.attr,
255 + &sensor_dev_attr_fan0_point2.dev_attr.attr,
256 + &sensor_dev_attr_fan0_point3.dev_attr.attr,
257 + &sensor_dev_attr_fan0_point4.dev_attr.attr,
258 + &sensor_dev_attr_fan0_point5.dev_attr.attr,
259 + NULL
260 +};
261 +
262 +
263 +static int gsp_probe(struct i2c_client *client,
264 + const struct i2c_device_id *id)
265 +{
266 + struct i2c_adapter *adapter = client->adapter;
267 + struct gsp_data *data;
268 + int err;
269 +
270 + if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA |
271 + I2C_FUNC_SMBUS_WORD_DATA)) {
272 + err = -EOPNOTSUPP;
273 + goto exit;
274 + }
275 +
276 + if (!(data = kzalloc(sizeof(struct gsp_data), GFP_KERNEL))) {
277 + err = -ENOMEM;
278 + goto exit;
279 + }
280 +
281 + i2c_set_clientdata(client, data);
282 +
283 + data->type = id->driver_data;
284 +
285 + switch (data->type) {
286 + case 0:
287 + data->attrs.attrs = gsp_attributes;
288 + break;
289 + }
290 +
291 + dev_info(&client->dev, "%s chip found\n", client->name);
292 +
293 + /* Register sysfs hooks */
294 + if ((err = sysfs_create_group(&client->dev.kobj, &data->attrs)))
295 + goto exit_free;
296 +
297 + data->hwmon_dev = hwmon_device_register(&client->dev);
298 + if (IS_ERR(data->hwmon_dev)) {
299 + err = PTR_ERR(data->hwmon_dev);
300 + goto exit_remove;
301 + }
302 +
303 + return 0;
304 +
305 +exit_remove:
306 + sysfs_remove_group(&client->dev.kobj, &data->attrs);
307 +exit_free:
308 + kfree(data);
309 +exit:
310 + return err;
311 +}
312 +
313 +static int gsp_remove(struct i2c_client *client)
314 +{
315 + struct gsp_data *data = i2c_get_clientdata(client);
316 + hwmon_device_unregister(data->hwmon_dev);
317 + sysfs_remove_group(&client->dev.kobj, &data->attrs);
318 + kfree(data);
319 + return 0;
320 +}
321 +
322 +static int __init gsp_init(void)
323 +{
324 + return i2c_add_driver(&gsp_driver);
325 +}
326 +
327 +static void __exit gsp_exit(void)
328 +{
329 + i2c_del_driver(&gsp_driver);
330 +}
331 +
332 +module_init(gsp_init);
333 +module_exit(gsp_exit);
334 +
335 +MODULE_AUTHOR("Chris Lang <clang@gateworks.com>");
336 +MODULE_DESCRIPTION("GSC HWMON driver");
337 +MODULE_LICENSE("GPL");
338 +MODULE_VERSION(DRV_VERSION);
339 +