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a98d506c HG |
1 | /*************************************************************************** |
2 | * Copyright (C) 2010-2011 Hans de Goede <hdegoede@redhat.com> * | |
3 | * * | |
4 | * This program is free software; you can redistribute it and/or modify * | |
5 | * it under the terms of the GNU General Public License as published by * | |
6 | * the Free Software Foundation; either version 2 of the License, or * | |
7 | * (at your option) any later version. * | |
8 | * * | |
9 | * This program is distributed in the hope that it will be useful, * | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * | |
12 | * GNU General Public License for more details. * | |
13 | * * | |
14 | * You should have received a copy of the GNU General Public License * | |
15 | * along with this program; if not, write to the * | |
16 | * Free Software Foundation, Inc., * | |
17 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * | |
18 | ***************************************************************************/ | |
19 | ||
20 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
21 | ||
22 | #include <linux/module.h> | |
23 | #include <linux/init.h> | |
24 | #include <linux/slab.h> | |
25 | #include <linux/jiffies.h> | |
26 | #include <linux/platform_device.h> | |
27 | #include <linux/hwmon.h> | |
28 | #include <linux/hwmon-sysfs.h> | |
29 | #include <linux/err.h> | |
30 | #include <linux/mutex.h> | |
28ff2f7a | 31 | #include "sch56xx-common.h" |
a98d506c HG |
32 | |
33 | #define DRVNAME "sch5627" | |
34 | #define DEVNAME DRVNAME /* We only support one model */ | |
35 | ||
a98d506c HG |
36 | #define SCH5627_HWMON_ID 0xa5 |
37 | #define SCH5627_COMPANY_ID 0x5c | |
38 | #define SCH5627_PRIMARY_ID 0xa0 | |
39 | ||
40 | #define SCH5627_REG_BUILD_CODE 0x39 | |
41 | #define SCH5627_REG_BUILD_ID 0x3a | |
42 | #define SCH5627_REG_HWMON_ID 0x3c | |
43 | #define SCH5627_REG_HWMON_REV 0x3d | |
44 | #define SCH5627_REG_COMPANY_ID 0x3e | |
45 | #define SCH5627_REG_PRIMARY_ID 0x3f | |
46 | #define SCH5627_REG_CTRL 0x40 | |
47 | ||
48 | #define SCH5627_NO_TEMPS 8 | |
49 | #define SCH5627_NO_FANS 4 | |
50 | #define SCH5627_NO_IN 5 | |
51 | ||
52 | static const u16 SCH5627_REG_TEMP_MSB[SCH5627_NO_TEMPS] = { | |
53 | 0x2B, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x180, 0x181 }; | |
54 | static const u16 SCH5627_REG_TEMP_LSN[SCH5627_NO_TEMPS] = { | |
55 | 0xE2, 0xE1, 0xE1, 0xE5, 0xE5, 0xE6, 0x182, 0x182 }; | |
56 | static const u16 SCH5627_REG_TEMP_HIGH_NIBBLE[SCH5627_NO_TEMPS] = { | |
57 | 0, 0, 1, 1, 0, 0, 0, 1 }; | |
58 | static const u16 SCH5627_REG_TEMP_HIGH[SCH5627_NO_TEMPS] = { | |
59 | 0x61, 0x57, 0x59, 0x5B, 0x5D, 0x5F, 0x184, 0x186 }; | |
60 | static const u16 SCH5627_REG_TEMP_ABS[SCH5627_NO_TEMPS] = { | |
61 | 0x9B, 0x96, 0x97, 0x98, 0x99, 0x9A, 0x1A8, 0x1A9 }; | |
62 | ||
63 | static const u16 SCH5627_REG_FAN[SCH5627_NO_FANS] = { | |
64 | 0x2C, 0x2E, 0x30, 0x32 }; | |
65 | static const u16 SCH5627_REG_FAN_MIN[SCH5627_NO_FANS] = { | |
66 | 0x62, 0x64, 0x66, 0x68 }; | |
67 | ||
68 | static const u16 SCH5627_REG_IN_MSB[SCH5627_NO_IN] = { | |
69 | 0x22, 0x23, 0x24, 0x25, 0x189 }; | |
70 | static const u16 SCH5627_REG_IN_LSN[SCH5627_NO_IN] = { | |
71 | 0xE4, 0xE4, 0xE3, 0xE3, 0x18A }; | |
72 | static const u16 SCH5627_REG_IN_HIGH_NIBBLE[SCH5627_NO_IN] = { | |
73 | 1, 0, 1, 0, 1 }; | |
74 | static const u16 SCH5627_REG_IN_FACTOR[SCH5627_NO_IN] = { | |
75 | 10745, 3660, 9765, 10745, 3660 }; | |
76 | static const char * const SCH5627_IN_LABELS[SCH5627_NO_IN] = { | |
77 | "VCC", "VTT", "VBAT", "VTR", "V_IN" }; | |
78 | ||
79 | struct sch5627_data { | |
80 | unsigned short addr; | |
81 | struct device *hwmon_dev; | |
357b9dc6 | 82 | u8 control; |
a98d506c HG |
83 | u8 temp_max[SCH5627_NO_TEMPS]; |
84 | u8 temp_crit[SCH5627_NO_TEMPS]; | |
85 | u16 fan_min[SCH5627_NO_FANS]; | |
86 | ||
87 | struct mutex update_lock; | |
357b9dc6 | 88 | unsigned long last_battery; /* In jiffies */ |
a98d506c HG |
89 | char valid; /* !=0 if following fields are valid */ |
90 | unsigned long last_updated; /* In jiffies */ | |
91 | u16 temp[SCH5627_NO_TEMPS]; | |
92 | u16 fan[SCH5627_NO_FANS]; | |
93 | u16 in[SCH5627_NO_IN]; | |
94 | }; | |
95 | ||
a98d506c HG |
96 | static struct sch5627_data *sch5627_update_device(struct device *dev) |
97 | { | |
98 | struct sch5627_data *data = dev_get_drvdata(dev); | |
99 | struct sch5627_data *ret = data; | |
100 | int i, val; | |
101 | ||
102 | mutex_lock(&data->update_lock); | |
103 | ||
357b9dc6 HG |
104 | /* Trigger a Vbat voltage measurement every 5 minutes */ |
105 | if (time_after(jiffies, data->last_battery + 300 * HZ)) { | |
28ff2f7a | 106 | sch56xx_write_virtual_reg(data->addr, SCH5627_REG_CTRL, |
357b9dc6 HG |
107 | data->control | 0x10); |
108 | data->last_battery = jiffies; | |
109 | } | |
110 | ||
a98d506c HG |
111 | /* Cache the values for 1 second */ |
112 | if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { | |
113 | for (i = 0; i < SCH5627_NO_TEMPS; i++) { | |
28ff2f7a | 114 | val = sch56xx_read_virtual_reg12(data->addr, |
a98d506c HG |
115 | SCH5627_REG_TEMP_MSB[i], |
116 | SCH5627_REG_TEMP_LSN[i], | |
117 | SCH5627_REG_TEMP_HIGH_NIBBLE[i]); | |
118 | if (unlikely(val < 0)) { | |
119 | ret = ERR_PTR(val); | |
120 | goto abort; | |
121 | } | |
122 | data->temp[i] = val; | |
123 | } | |
124 | ||
125 | for (i = 0; i < SCH5627_NO_FANS; i++) { | |
28ff2f7a | 126 | val = sch56xx_read_virtual_reg16(data->addr, |
a98d506c HG |
127 | SCH5627_REG_FAN[i]); |
128 | if (unlikely(val < 0)) { | |
129 | ret = ERR_PTR(val); | |
130 | goto abort; | |
131 | } | |
132 | data->fan[i] = val; | |
133 | } | |
134 | ||
135 | for (i = 0; i < SCH5627_NO_IN; i++) { | |
28ff2f7a | 136 | val = sch56xx_read_virtual_reg12(data->addr, |
a98d506c HG |
137 | SCH5627_REG_IN_MSB[i], |
138 | SCH5627_REG_IN_LSN[i], | |
139 | SCH5627_REG_IN_HIGH_NIBBLE[i]); | |
140 | if (unlikely(val < 0)) { | |
141 | ret = ERR_PTR(val); | |
142 | goto abort; | |
143 | } | |
144 | data->in[i] = val; | |
145 | } | |
146 | ||
147 | data->last_updated = jiffies; | |
148 | data->valid = 1; | |
149 | } | |
150 | abort: | |
151 | mutex_unlock(&data->update_lock); | |
152 | return ret; | |
153 | } | |
154 | ||
155 | static int __devinit sch5627_read_limits(struct sch5627_data *data) | |
156 | { | |
157 | int i, val; | |
158 | ||
159 | for (i = 0; i < SCH5627_NO_TEMPS; i++) { | |
160 | /* | |
161 | * Note what SMSC calls ABS, is what lm_sensors calls max | |
162 | * (aka high), and HIGH is what lm_sensors calls crit. | |
163 | */ | |
28ff2f7a HG |
164 | val = sch56xx_read_virtual_reg(data->addr, |
165 | SCH5627_REG_TEMP_ABS[i]); | |
a98d506c HG |
166 | if (val < 0) |
167 | return val; | |
168 | data->temp_max[i] = val; | |
169 | ||
28ff2f7a HG |
170 | val = sch56xx_read_virtual_reg(data->addr, |
171 | SCH5627_REG_TEMP_HIGH[i]); | |
a98d506c HG |
172 | if (val < 0) |
173 | return val; | |
174 | data->temp_crit[i] = val; | |
175 | } | |
176 | for (i = 0; i < SCH5627_NO_FANS; i++) { | |
28ff2f7a HG |
177 | val = sch56xx_read_virtual_reg16(data->addr, |
178 | SCH5627_REG_FAN_MIN[i]); | |
a98d506c HG |
179 | if (val < 0) |
180 | return val; | |
181 | data->fan_min[i] = val; | |
182 | } | |
183 | ||
184 | return 0; | |
185 | } | |
186 | ||
187 | static int reg_to_temp(u16 reg) | |
188 | { | |
189 | return (reg * 625) / 10 - 64000; | |
190 | } | |
191 | ||
192 | static int reg_to_temp_limit(u8 reg) | |
193 | { | |
194 | return (reg - 64) * 1000; | |
195 | } | |
196 | ||
197 | static int reg_to_rpm(u16 reg) | |
198 | { | |
199 | if (reg == 0) | |
200 | return -EIO; | |
201 | if (reg == 0xffff) | |
202 | return 0; | |
203 | ||
204 | return 5400540 / reg; | |
205 | } | |
206 | ||
207 | static ssize_t show_name(struct device *dev, struct device_attribute *devattr, | |
208 | char *buf) | |
209 | { | |
210 | return snprintf(buf, PAGE_SIZE, "%s\n", DEVNAME); | |
211 | } | |
212 | ||
213 | static ssize_t show_temp(struct device *dev, struct device_attribute | |
214 | *devattr, char *buf) | |
215 | { | |
216 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
217 | struct sch5627_data *data = sch5627_update_device(dev); | |
218 | int val; | |
219 | ||
220 | if (IS_ERR(data)) | |
221 | return PTR_ERR(data); | |
222 | ||
223 | val = reg_to_temp(data->temp[attr->index]); | |
224 | return snprintf(buf, PAGE_SIZE, "%d\n", val); | |
225 | } | |
226 | ||
227 | static ssize_t show_temp_fault(struct device *dev, struct device_attribute | |
228 | *devattr, char *buf) | |
229 | { | |
230 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
231 | struct sch5627_data *data = sch5627_update_device(dev); | |
232 | ||
233 | if (IS_ERR(data)) | |
234 | return PTR_ERR(data); | |
235 | ||
236 | return snprintf(buf, PAGE_SIZE, "%d\n", data->temp[attr->index] == 0); | |
237 | } | |
238 | ||
239 | static ssize_t show_temp_max(struct device *dev, struct device_attribute | |
240 | *devattr, char *buf) | |
241 | { | |
242 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
243 | struct sch5627_data *data = dev_get_drvdata(dev); | |
244 | int val; | |
245 | ||
246 | val = reg_to_temp_limit(data->temp_max[attr->index]); | |
247 | return snprintf(buf, PAGE_SIZE, "%d\n", val); | |
248 | } | |
249 | ||
250 | static ssize_t show_temp_crit(struct device *dev, struct device_attribute | |
251 | *devattr, char *buf) | |
252 | { | |
253 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
254 | struct sch5627_data *data = dev_get_drvdata(dev); | |
255 | int val; | |
256 | ||
257 | val = reg_to_temp_limit(data->temp_crit[attr->index]); | |
258 | return snprintf(buf, PAGE_SIZE, "%d\n", val); | |
259 | } | |
260 | ||
261 | static ssize_t show_fan(struct device *dev, struct device_attribute | |
262 | *devattr, char *buf) | |
263 | { | |
264 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
265 | struct sch5627_data *data = sch5627_update_device(dev); | |
266 | int val; | |
267 | ||
268 | if (IS_ERR(data)) | |
269 | return PTR_ERR(data); | |
270 | ||
271 | val = reg_to_rpm(data->fan[attr->index]); | |
272 | if (val < 0) | |
273 | return val; | |
274 | ||
275 | return snprintf(buf, PAGE_SIZE, "%d\n", val); | |
276 | } | |
277 | ||
278 | static ssize_t show_fan_fault(struct device *dev, struct device_attribute | |
279 | *devattr, char *buf) | |
280 | { | |
281 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
282 | struct sch5627_data *data = sch5627_update_device(dev); | |
283 | ||
284 | if (IS_ERR(data)) | |
285 | return PTR_ERR(data); | |
286 | ||
287 | return snprintf(buf, PAGE_SIZE, "%d\n", | |
288 | data->fan[attr->index] == 0xffff); | |
289 | } | |
290 | ||
291 | static ssize_t show_fan_min(struct device *dev, struct device_attribute | |
292 | *devattr, char *buf) | |
293 | { | |
294 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
295 | struct sch5627_data *data = dev_get_drvdata(dev); | |
296 | int val = reg_to_rpm(data->fan_min[attr->index]); | |
297 | if (val < 0) | |
298 | return val; | |
299 | ||
300 | return snprintf(buf, PAGE_SIZE, "%d\n", val); | |
301 | } | |
302 | ||
303 | static ssize_t show_in(struct device *dev, struct device_attribute | |
304 | *devattr, char *buf) | |
305 | { | |
306 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
307 | struct sch5627_data *data = sch5627_update_device(dev); | |
308 | int val; | |
309 | ||
310 | if (IS_ERR(data)) | |
311 | return PTR_ERR(data); | |
312 | ||
313 | val = DIV_ROUND_CLOSEST( | |
314 | data->in[attr->index] * SCH5627_REG_IN_FACTOR[attr->index], | |
315 | 10000); | |
316 | return snprintf(buf, PAGE_SIZE, "%d\n", val); | |
317 | } | |
318 | ||
319 | static ssize_t show_in_label(struct device *dev, struct device_attribute | |
320 | *devattr, char *buf) | |
321 | { | |
322 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
323 | ||
324 | return snprintf(buf, PAGE_SIZE, "%s\n", | |
325 | SCH5627_IN_LABELS[attr->index]); | |
326 | } | |
327 | ||
328 | static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); | |
329 | static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0); | |
330 | static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1); | |
331 | static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2); | |
332 | static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, show_temp, NULL, 3); | |
333 | static SENSOR_DEVICE_ATTR(temp5_input, S_IRUGO, show_temp, NULL, 4); | |
334 | static SENSOR_DEVICE_ATTR(temp6_input, S_IRUGO, show_temp, NULL, 5); | |
335 | static SENSOR_DEVICE_ATTR(temp7_input, S_IRUGO, show_temp, NULL, 6); | |
336 | static SENSOR_DEVICE_ATTR(temp8_input, S_IRUGO, show_temp, NULL, 7); | |
337 | static SENSOR_DEVICE_ATTR(temp1_fault, S_IRUGO, show_temp_fault, NULL, 0); | |
338 | static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_temp_fault, NULL, 1); | |
339 | static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_temp_fault, NULL, 2); | |
340 | static SENSOR_DEVICE_ATTR(temp4_fault, S_IRUGO, show_temp_fault, NULL, 3); | |
341 | static SENSOR_DEVICE_ATTR(temp5_fault, S_IRUGO, show_temp_fault, NULL, 4); | |
342 | static SENSOR_DEVICE_ATTR(temp6_fault, S_IRUGO, show_temp_fault, NULL, 5); | |
343 | static SENSOR_DEVICE_ATTR(temp7_fault, S_IRUGO, show_temp_fault, NULL, 6); | |
344 | static SENSOR_DEVICE_ATTR(temp8_fault, S_IRUGO, show_temp_fault, NULL, 7); | |
345 | static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO, show_temp_max, NULL, 0); | |
346 | static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO, show_temp_max, NULL, 1); | |
347 | static SENSOR_DEVICE_ATTR(temp3_max, S_IRUGO, show_temp_max, NULL, 2); | |
348 | static SENSOR_DEVICE_ATTR(temp4_max, S_IRUGO, show_temp_max, NULL, 3); | |
349 | static SENSOR_DEVICE_ATTR(temp5_max, S_IRUGO, show_temp_max, NULL, 4); | |
350 | static SENSOR_DEVICE_ATTR(temp6_max, S_IRUGO, show_temp_max, NULL, 5); | |
351 | static SENSOR_DEVICE_ATTR(temp7_max, S_IRUGO, show_temp_max, NULL, 6); | |
352 | static SENSOR_DEVICE_ATTR(temp8_max, S_IRUGO, show_temp_max, NULL, 7); | |
353 | static SENSOR_DEVICE_ATTR(temp1_crit, S_IRUGO, show_temp_crit, NULL, 0); | |
354 | static SENSOR_DEVICE_ATTR(temp2_crit, S_IRUGO, show_temp_crit, NULL, 1); | |
355 | static SENSOR_DEVICE_ATTR(temp3_crit, S_IRUGO, show_temp_crit, NULL, 2); | |
356 | static SENSOR_DEVICE_ATTR(temp4_crit, S_IRUGO, show_temp_crit, NULL, 3); | |
357 | static SENSOR_DEVICE_ATTR(temp5_crit, S_IRUGO, show_temp_crit, NULL, 4); | |
358 | static SENSOR_DEVICE_ATTR(temp6_crit, S_IRUGO, show_temp_crit, NULL, 5); | |
359 | static SENSOR_DEVICE_ATTR(temp7_crit, S_IRUGO, show_temp_crit, NULL, 6); | |
360 | static SENSOR_DEVICE_ATTR(temp8_crit, S_IRUGO, show_temp_crit, NULL, 7); | |
361 | ||
362 | static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0); | |
363 | static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1); | |
364 | static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2); | |
365 | static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3); | |
366 | static SENSOR_DEVICE_ATTR(fan1_fault, S_IRUGO, show_fan_fault, NULL, 0); | |
367 | static SENSOR_DEVICE_ATTR(fan2_fault, S_IRUGO, show_fan_fault, NULL, 1); | |
368 | static SENSOR_DEVICE_ATTR(fan3_fault, S_IRUGO, show_fan_fault, NULL, 2); | |
369 | static SENSOR_DEVICE_ATTR(fan4_fault, S_IRUGO, show_fan_fault, NULL, 3); | |
370 | static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO, show_fan_min, NULL, 0); | |
371 | static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO, show_fan_min, NULL, 1); | |
372 | static SENSOR_DEVICE_ATTR(fan3_min, S_IRUGO, show_fan_min, NULL, 2); | |
373 | static SENSOR_DEVICE_ATTR(fan4_min, S_IRUGO, show_fan_min, NULL, 3); | |
374 | ||
375 | static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in, NULL, 0); | |
376 | static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in, NULL, 1); | |
377 | static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in, NULL, 2); | |
378 | static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in, NULL, 3); | |
379 | static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, show_in, NULL, 4); | |
380 | static SENSOR_DEVICE_ATTR(in0_label, S_IRUGO, show_in_label, NULL, 0); | |
381 | static SENSOR_DEVICE_ATTR(in1_label, S_IRUGO, show_in_label, NULL, 1); | |
382 | static SENSOR_DEVICE_ATTR(in2_label, S_IRUGO, show_in_label, NULL, 2); | |
383 | static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_in_label, NULL, 3); | |
384 | ||
385 | static struct attribute *sch5627_attributes[] = { | |
386 | &dev_attr_name.attr, | |
387 | ||
388 | &sensor_dev_attr_temp1_input.dev_attr.attr, | |
389 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
390 | &sensor_dev_attr_temp3_input.dev_attr.attr, | |
391 | &sensor_dev_attr_temp4_input.dev_attr.attr, | |
392 | &sensor_dev_attr_temp5_input.dev_attr.attr, | |
393 | &sensor_dev_attr_temp6_input.dev_attr.attr, | |
394 | &sensor_dev_attr_temp7_input.dev_attr.attr, | |
395 | &sensor_dev_attr_temp8_input.dev_attr.attr, | |
396 | &sensor_dev_attr_temp1_fault.dev_attr.attr, | |
397 | &sensor_dev_attr_temp2_fault.dev_attr.attr, | |
398 | &sensor_dev_attr_temp3_fault.dev_attr.attr, | |
399 | &sensor_dev_attr_temp4_fault.dev_attr.attr, | |
400 | &sensor_dev_attr_temp5_fault.dev_attr.attr, | |
401 | &sensor_dev_attr_temp6_fault.dev_attr.attr, | |
402 | &sensor_dev_attr_temp7_fault.dev_attr.attr, | |
403 | &sensor_dev_attr_temp8_fault.dev_attr.attr, | |
404 | &sensor_dev_attr_temp1_max.dev_attr.attr, | |
405 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
406 | &sensor_dev_attr_temp3_max.dev_attr.attr, | |
407 | &sensor_dev_attr_temp4_max.dev_attr.attr, | |
408 | &sensor_dev_attr_temp5_max.dev_attr.attr, | |
409 | &sensor_dev_attr_temp6_max.dev_attr.attr, | |
410 | &sensor_dev_attr_temp7_max.dev_attr.attr, | |
411 | &sensor_dev_attr_temp8_max.dev_attr.attr, | |
412 | &sensor_dev_attr_temp1_crit.dev_attr.attr, | |
413 | &sensor_dev_attr_temp2_crit.dev_attr.attr, | |
414 | &sensor_dev_attr_temp3_crit.dev_attr.attr, | |
415 | &sensor_dev_attr_temp4_crit.dev_attr.attr, | |
416 | &sensor_dev_attr_temp5_crit.dev_attr.attr, | |
417 | &sensor_dev_attr_temp6_crit.dev_attr.attr, | |
418 | &sensor_dev_attr_temp7_crit.dev_attr.attr, | |
419 | &sensor_dev_attr_temp8_crit.dev_attr.attr, | |
420 | ||
421 | &sensor_dev_attr_fan1_input.dev_attr.attr, | |
422 | &sensor_dev_attr_fan2_input.dev_attr.attr, | |
423 | &sensor_dev_attr_fan3_input.dev_attr.attr, | |
424 | &sensor_dev_attr_fan4_input.dev_attr.attr, | |
425 | &sensor_dev_attr_fan1_fault.dev_attr.attr, | |
426 | &sensor_dev_attr_fan2_fault.dev_attr.attr, | |
427 | &sensor_dev_attr_fan3_fault.dev_attr.attr, | |
428 | &sensor_dev_attr_fan4_fault.dev_attr.attr, | |
429 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
430 | &sensor_dev_attr_fan2_min.dev_attr.attr, | |
431 | &sensor_dev_attr_fan3_min.dev_attr.attr, | |
432 | &sensor_dev_attr_fan4_min.dev_attr.attr, | |
433 | ||
434 | &sensor_dev_attr_in0_input.dev_attr.attr, | |
435 | &sensor_dev_attr_in1_input.dev_attr.attr, | |
436 | &sensor_dev_attr_in2_input.dev_attr.attr, | |
437 | &sensor_dev_attr_in3_input.dev_attr.attr, | |
438 | &sensor_dev_attr_in4_input.dev_attr.attr, | |
439 | &sensor_dev_attr_in0_label.dev_attr.attr, | |
440 | &sensor_dev_attr_in1_label.dev_attr.attr, | |
441 | &sensor_dev_attr_in2_label.dev_attr.attr, | |
442 | &sensor_dev_attr_in3_label.dev_attr.attr, | |
443 | /* No in4_label as in4 is a generic input pin */ | |
444 | ||
445 | NULL | |
446 | }; | |
447 | ||
448 | static const struct attribute_group sch5627_group = { | |
449 | .attrs = sch5627_attributes, | |
450 | }; | |
451 | ||
452 | static int sch5627_remove(struct platform_device *pdev) | |
453 | { | |
454 | struct sch5627_data *data = platform_get_drvdata(pdev); | |
455 | ||
456 | if (data->hwmon_dev) | |
457 | hwmon_device_unregister(data->hwmon_dev); | |
458 | ||
459 | sysfs_remove_group(&pdev->dev.kobj, &sch5627_group); | |
460 | platform_set_drvdata(pdev, NULL); | |
461 | kfree(data); | |
462 | ||
463 | return 0; | |
464 | } | |
465 | ||
466 | static int __devinit sch5627_probe(struct platform_device *pdev) | |
467 | { | |
468 | struct sch5627_data *data; | |
469 | int err, build_code, build_id, hwmon_rev, val; | |
470 | ||
471 | data = kzalloc(sizeof(struct sch5627_data), GFP_KERNEL); | |
472 | if (!data) | |
473 | return -ENOMEM; | |
474 | ||
475 | data->addr = platform_get_resource(pdev, IORESOURCE_IO, 0)->start; | |
476 | mutex_init(&data->update_lock); | |
477 | platform_set_drvdata(pdev, data); | |
478 | ||
28ff2f7a | 479 | val = sch56xx_read_virtual_reg(data->addr, SCH5627_REG_HWMON_ID); |
a98d506c HG |
480 | if (val < 0) { |
481 | err = val; | |
482 | goto error; | |
483 | } | |
484 | if (val != SCH5627_HWMON_ID) { | |
485 | pr_err("invalid %s id: 0x%02X (expected 0x%02X)\n", "hwmon", | |
486 | val, SCH5627_HWMON_ID); | |
487 | err = -ENODEV; | |
488 | goto error; | |
489 | } | |
490 | ||
28ff2f7a | 491 | val = sch56xx_read_virtual_reg(data->addr, SCH5627_REG_COMPANY_ID); |
a98d506c HG |
492 | if (val < 0) { |
493 | err = val; | |
494 | goto error; | |
495 | } | |
496 | if (val != SCH5627_COMPANY_ID) { | |
497 | pr_err("invalid %s id: 0x%02X (expected 0x%02X)\n", "company", | |
498 | val, SCH5627_COMPANY_ID); | |
499 | err = -ENODEV; | |
500 | goto error; | |
501 | } | |
502 | ||
28ff2f7a | 503 | val = sch56xx_read_virtual_reg(data->addr, SCH5627_REG_PRIMARY_ID); |
a98d506c HG |
504 | if (val < 0) { |
505 | err = val; | |
506 | goto error; | |
507 | } | |
508 | if (val != SCH5627_PRIMARY_ID) { | |
509 | pr_err("invalid %s id: 0x%02X (expected 0x%02X)\n", "primary", | |
510 | val, SCH5627_PRIMARY_ID); | |
511 | err = -ENODEV; | |
512 | goto error; | |
513 | } | |
514 | ||
28ff2f7a HG |
515 | build_code = sch56xx_read_virtual_reg(data->addr, |
516 | SCH5627_REG_BUILD_CODE); | |
a98d506c HG |
517 | if (build_code < 0) { |
518 | err = build_code; | |
519 | goto error; | |
520 | } | |
521 | ||
28ff2f7a HG |
522 | build_id = sch56xx_read_virtual_reg16(data->addr, |
523 | SCH5627_REG_BUILD_ID); | |
a98d506c HG |
524 | if (build_id < 0) { |
525 | err = build_id; | |
526 | goto error; | |
527 | } | |
528 | ||
28ff2f7a HG |
529 | hwmon_rev = sch56xx_read_virtual_reg(data->addr, |
530 | SCH5627_REG_HWMON_REV); | |
a98d506c HG |
531 | if (hwmon_rev < 0) { |
532 | err = hwmon_rev; | |
533 | goto error; | |
534 | } | |
535 | ||
28ff2f7a | 536 | val = sch56xx_read_virtual_reg(data->addr, SCH5627_REG_CTRL); |
a98d506c HG |
537 | if (val < 0) { |
538 | err = val; | |
539 | goto error; | |
540 | } | |
357b9dc6 HG |
541 | data->control = val; |
542 | if (!(data->control & 0x01)) { | |
a98d506c HG |
543 | pr_err("hardware monitoring not enabled\n"); |
544 | err = -ENODEV; | |
545 | goto error; | |
546 | } | |
357b9dc6 HG |
547 | /* Trigger a Vbat voltage measurement, so that we get a valid reading |
548 | the first time we read Vbat */ | |
28ff2f7a | 549 | sch56xx_write_virtual_reg(data->addr, SCH5627_REG_CTRL, |
357b9dc6 HG |
550 | data->control | 0x10); |
551 | data->last_battery = jiffies; | |
a98d506c HG |
552 | |
553 | /* | |
554 | * Read limits, we do this only once as reading a register on | |
555 | * the sch5627 is quite expensive (and they don't change). | |
556 | */ | |
557 | err = sch5627_read_limits(data); | |
558 | if (err) | |
559 | goto error; | |
560 | ||
28ff2f7a | 561 | pr_info("found %s chip at %#hx\n", DEVNAME, data->addr); |
a98d506c HG |
562 | pr_info("firmware build: code 0x%02X, id 0x%04X, hwmon: rev 0x%02X\n", |
563 | build_code, build_id, hwmon_rev); | |
564 | ||
565 | /* Register sysfs interface files */ | |
566 | err = sysfs_create_group(&pdev->dev.kobj, &sch5627_group); | |
567 | if (err) | |
568 | goto error; | |
569 | ||
570 | data->hwmon_dev = hwmon_device_register(&pdev->dev); | |
571 | if (IS_ERR(data->hwmon_dev)) { | |
572 | err = PTR_ERR(data->hwmon_dev); | |
573 | data->hwmon_dev = NULL; | |
574 | goto error; | |
575 | } | |
576 | ||
577 | return 0; | |
578 | ||
579 | error: | |
580 | sch5627_remove(pdev); | |
581 | return err; | |
582 | } | |
583 | ||
a98d506c HG |
584 | static struct platform_driver sch5627_driver = { |
585 | .driver = { | |
586 | .owner = THIS_MODULE, | |
587 | .name = DRVNAME, | |
588 | }, | |
589 | .probe = sch5627_probe, | |
590 | .remove = sch5627_remove, | |
591 | }; | |
592 | ||
25a236a5 | 593 | module_platform_driver(sch5627_driver); |
a98d506c HG |
594 | |
595 | MODULE_DESCRIPTION("SMSC SCH5627 Hardware Monitoring Driver"); | |
7958e3b4 | 596 | MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>"); |
a98d506c | 597 | MODULE_LICENSE("GPL"); |