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08e7e278 JD |
1 | /* |
2 | w83627ehf - Driver for the hardware monitoring functionality of | |
3 | the Winbond W83627EHF Super-I/O chip | |
4 | Copyright (C) 2005 Jean Delvare <khali@linux-fr.org> | |
5 | ||
6 | Shamelessly ripped from the w83627hf driver | |
7 | Copyright (C) 2003 Mark Studebaker | |
8 | ||
9 | Thanks to Leon Moonen, Steve Cliffe and Grant Coady for their help | |
10 | in testing and debugging this driver. | |
11 | ||
8dd2d2ca JD |
12 | This driver also supports the W83627EHG, which is the lead-free |
13 | version of the W83627EHF. | |
14 | ||
08e7e278 JD |
15 | This program is free software; you can redistribute it and/or modify |
16 | it under the terms of the GNU General Public License as published by | |
17 | the Free Software Foundation; either version 2 of the License, or | |
18 | (at your option) any later version. | |
19 | ||
20 | This program is distributed in the hope that it will be useful, | |
21 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
22 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
23 | GNU General Public License for more details. | |
24 | ||
25 | You should have received a copy of the GNU General Public License | |
26 | along with this program; if not, write to the Free Software | |
27 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
28 | ||
29 | ||
30 | Supports the following chips: | |
31 | ||
32 | Chip #vin #fan #pwm #temp chip_id man_id | |
33 | w83627ehf - 5 - 3 0x88 0x5ca3 | |
34 | ||
35 | This is a preliminary version of the driver, only supporting the | |
36 | fan and temperature inputs. The chip does much more than that. | |
37 | */ | |
38 | ||
39 | #include <linux/module.h> | |
40 | #include <linux/init.h> | |
41 | #include <linux/slab.h> | |
42 | #include <linux/i2c.h> | |
fde09509 | 43 | #include <linux/i2c-isa.h> |
943b0830 | 44 | #include <linux/hwmon.h> |
412fec82 | 45 | #include <linux/hwmon-sysfs.h> |
943b0830 | 46 | #include <linux/err.h> |
9a61bf63 | 47 | #include <linux/mutex.h> |
08e7e278 JD |
48 | #include <asm/io.h> |
49 | #include "lm75.h" | |
50 | ||
2d8672c5 JD |
51 | /* The actual ISA address is read from Super-I/O configuration space */ |
52 | static unsigned short address; | |
08e7e278 JD |
53 | |
54 | /* | |
55 | * Super-I/O constants and functions | |
56 | */ | |
57 | ||
58 | static int REG; /* The register to read/write */ | |
59 | static int VAL; /* The value to read/write */ | |
60 | ||
61 | #define W83627EHF_LD_HWM 0x0b | |
62 | ||
63 | #define SIO_REG_LDSEL 0x07 /* Logical device select */ | |
64 | #define SIO_REG_DEVID 0x20 /* Device ID (2 bytes) */ | |
65 | #define SIO_REG_ENABLE 0x30 /* Logical device enable */ | |
66 | #define SIO_REG_ADDR 0x60 /* Logical device address (2 bytes) */ | |
67 | ||
68 | #define SIO_W83627EHF_ID 0x8840 | |
69 | #define SIO_ID_MASK 0xFFC0 | |
70 | ||
71 | static inline void | |
72 | superio_outb(int reg, int val) | |
73 | { | |
74 | outb(reg, REG); | |
75 | outb(val, VAL); | |
76 | } | |
77 | ||
78 | static inline int | |
79 | superio_inb(int reg) | |
80 | { | |
81 | outb(reg, REG); | |
82 | return inb(VAL); | |
83 | } | |
84 | ||
85 | static inline void | |
86 | superio_select(int ld) | |
87 | { | |
88 | outb(SIO_REG_LDSEL, REG); | |
89 | outb(ld, VAL); | |
90 | } | |
91 | ||
92 | static inline void | |
93 | superio_enter(void) | |
94 | { | |
95 | outb(0x87, REG); | |
96 | outb(0x87, REG); | |
97 | } | |
98 | ||
99 | static inline void | |
100 | superio_exit(void) | |
101 | { | |
102 | outb(0x02, REG); | |
103 | outb(0x02, VAL); | |
104 | } | |
105 | ||
106 | /* | |
107 | * ISA constants | |
108 | */ | |
109 | ||
ada0c2f8 PV |
110 | #define REGION_ALIGNMENT ~7 |
111 | #define REGION_OFFSET 5 | |
112 | #define REGION_LENGTH 2 | |
08e7e278 JD |
113 | #define ADDR_REG_OFFSET 5 |
114 | #define DATA_REG_OFFSET 6 | |
115 | ||
116 | #define W83627EHF_REG_BANK 0x4E | |
117 | #define W83627EHF_REG_CONFIG 0x40 | |
118 | #define W83627EHF_REG_CHIP_ID 0x49 | |
119 | #define W83627EHF_REG_MAN_ID 0x4F | |
120 | ||
121 | static const u16 W83627EHF_REG_FAN[] = { 0x28, 0x29, 0x2a, 0x3f, 0x553 }; | |
122 | static const u16 W83627EHF_REG_FAN_MIN[] = { 0x3b, 0x3c, 0x3d, 0x3e, 0x55c }; | |
123 | ||
124 | #define W83627EHF_REG_TEMP1 0x27 | |
125 | #define W83627EHF_REG_TEMP1_HYST 0x3a | |
126 | #define W83627EHF_REG_TEMP1_OVER 0x39 | |
127 | static const u16 W83627EHF_REG_TEMP[] = { 0x150, 0x250 }; | |
128 | static const u16 W83627EHF_REG_TEMP_HYST[] = { 0x153, 0x253 }; | |
129 | static const u16 W83627EHF_REG_TEMP_OVER[] = { 0x155, 0x255 }; | |
130 | static const u16 W83627EHF_REG_TEMP_CONFIG[] = { 0x152, 0x252 }; | |
131 | ||
132 | /* Fan clock dividers are spread over the following five registers */ | |
133 | #define W83627EHF_REG_FANDIV1 0x47 | |
134 | #define W83627EHF_REG_FANDIV2 0x4B | |
135 | #define W83627EHF_REG_VBAT 0x5D | |
136 | #define W83627EHF_REG_DIODE 0x59 | |
137 | #define W83627EHF_REG_SMI_OVT 0x4C | |
138 | ||
139 | /* | |
140 | * Conversions | |
141 | */ | |
142 | ||
143 | static inline unsigned int | |
144 | fan_from_reg(u8 reg, unsigned int div) | |
145 | { | |
146 | if (reg == 0 || reg == 255) | |
147 | return 0; | |
148 | return 1350000U / (reg * div); | |
149 | } | |
150 | ||
151 | static inline unsigned int | |
152 | div_from_reg(u8 reg) | |
153 | { | |
154 | return 1 << reg; | |
155 | } | |
156 | ||
157 | static inline int | |
158 | temp1_from_reg(s8 reg) | |
159 | { | |
160 | return reg * 1000; | |
161 | } | |
162 | ||
163 | static inline s8 | |
164 | temp1_to_reg(int temp) | |
165 | { | |
166 | if (temp <= -128000) | |
167 | return -128; | |
168 | if (temp >= 127000) | |
169 | return 127; | |
170 | if (temp < 0) | |
171 | return (temp - 500) / 1000; | |
172 | return (temp + 500) / 1000; | |
173 | } | |
174 | ||
175 | /* | |
176 | * Data structures and manipulation thereof | |
177 | */ | |
178 | ||
179 | struct w83627ehf_data { | |
180 | struct i2c_client client; | |
943b0830 | 181 | struct class_device *class_dev; |
9a61bf63 | 182 | struct mutex lock; |
08e7e278 | 183 | |
9a61bf63 | 184 | struct mutex update_lock; |
08e7e278 JD |
185 | char valid; /* !=0 if following fields are valid */ |
186 | unsigned long last_updated; /* In jiffies */ | |
187 | ||
188 | /* Register values */ | |
189 | u8 fan[5]; | |
190 | u8 fan_min[5]; | |
191 | u8 fan_div[5]; | |
192 | u8 has_fan; /* some fan inputs can be disabled */ | |
193 | s8 temp1; | |
194 | s8 temp1_max; | |
195 | s8 temp1_max_hyst; | |
196 | s16 temp[2]; | |
197 | s16 temp_max[2]; | |
198 | s16 temp_max_hyst[2]; | |
199 | }; | |
200 | ||
201 | static inline int is_word_sized(u16 reg) | |
202 | { | |
203 | return (((reg & 0xff00) == 0x100 | |
204 | || (reg & 0xff00) == 0x200) | |
205 | && ((reg & 0x00ff) == 0x50 | |
206 | || (reg & 0x00ff) == 0x53 | |
207 | || (reg & 0x00ff) == 0x55)); | |
208 | } | |
209 | ||
210 | /* We assume that the default bank is 0, thus the following two functions do | |
211 | nothing for registers which live in bank 0. For others, they respectively | |
212 | set the bank register to the correct value (before the register is | |
213 | accessed), and back to 0 (afterwards). */ | |
214 | static inline void w83627ehf_set_bank(struct i2c_client *client, u16 reg) | |
215 | { | |
216 | if (reg & 0xff00) { | |
217 | outb_p(W83627EHF_REG_BANK, client->addr + ADDR_REG_OFFSET); | |
218 | outb_p(reg >> 8, client->addr + DATA_REG_OFFSET); | |
219 | } | |
220 | } | |
221 | ||
222 | static inline void w83627ehf_reset_bank(struct i2c_client *client, u16 reg) | |
223 | { | |
224 | if (reg & 0xff00) { | |
225 | outb_p(W83627EHF_REG_BANK, client->addr + ADDR_REG_OFFSET); | |
226 | outb_p(0, client->addr + DATA_REG_OFFSET); | |
227 | } | |
228 | } | |
229 | ||
230 | static u16 w83627ehf_read_value(struct i2c_client *client, u16 reg) | |
231 | { | |
232 | struct w83627ehf_data *data = i2c_get_clientdata(client); | |
233 | int res, word_sized = is_word_sized(reg); | |
234 | ||
9a61bf63 | 235 | mutex_lock(&data->lock); |
08e7e278 JD |
236 | |
237 | w83627ehf_set_bank(client, reg); | |
238 | outb_p(reg & 0xff, client->addr + ADDR_REG_OFFSET); | |
239 | res = inb_p(client->addr + DATA_REG_OFFSET); | |
240 | if (word_sized) { | |
241 | outb_p((reg & 0xff) + 1, | |
242 | client->addr + ADDR_REG_OFFSET); | |
243 | res = (res << 8) + inb_p(client->addr + DATA_REG_OFFSET); | |
244 | } | |
245 | w83627ehf_reset_bank(client, reg); | |
246 | ||
9a61bf63 | 247 | mutex_unlock(&data->lock); |
08e7e278 JD |
248 | |
249 | return res; | |
250 | } | |
251 | ||
252 | static int w83627ehf_write_value(struct i2c_client *client, u16 reg, u16 value) | |
253 | { | |
254 | struct w83627ehf_data *data = i2c_get_clientdata(client); | |
255 | int word_sized = is_word_sized(reg); | |
256 | ||
9a61bf63 | 257 | mutex_lock(&data->lock); |
08e7e278 JD |
258 | |
259 | w83627ehf_set_bank(client, reg); | |
260 | outb_p(reg & 0xff, client->addr + ADDR_REG_OFFSET); | |
261 | if (word_sized) { | |
262 | outb_p(value >> 8, client->addr + DATA_REG_OFFSET); | |
263 | outb_p((reg & 0xff) + 1, | |
264 | client->addr + ADDR_REG_OFFSET); | |
265 | } | |
266 | outb_p(value & 0xff, client->addr + DATA_REG_OFFSET); | |
267 | w83627ehf_reset_bank(client, reg); | |
268 | ||
9a61bf63 | 269 | mutex_unlock(&data->lock); |
08e7e278 JD |
270 | return 0; |
271 | } | |
272 | ||
273 | /* This function assumes that the caller holds data->update_lock */ | |
274 | static void w83627ehf_write_fan_div(struct i2c_client *client, int nr) | |
275 | { | |
276 | struct w83627ehf_data *data = i2c_get_clientdata(client); | |
277 | u8 reg; | |
278 | ||
279 | switch (nr) { | |
280 | case 0: | |
281 | reg = (w83627ehf_read_value(client, W83627EHF_REG_FANDIV1) & 0xcf) | |
282 | | ((data->fan_div[0] & 0x03) << 4); | |
283 | w83627ehf_write_value(client, W83627EHF_REG_FANDIV1, reg); | |
284 | reg = (w83627ehf_read_value(client, W83627EHF_REG_VBAT) & 0xdf) | |
285 | | ((data->fan_div[0] & 0x04) << 3); | |
286 | w83627ehf_write_value(client, W83627EHF_REG_VBAT, reg); | |
287 | break; | |
288 | case 1: | |
289 | reg = (w83627ehf_read_value(client, W83627EHF_REG_FANDIV1) & 0x3f) | |
290 | | ((data->fan_div[1] & 0x03) << 6); | |
291 | w83627ehf_write_value(client, W83627EHF_REG_FANDIV1, reg); | |
292 | reg = (w83627ehf_read_value(client, W83627EHF_REG_VBAT) & 0xbf) | |
293 | | ((data->fan_div[1] & 0x04) << 4); | |
294 | w83627ehf_write_value(client, W83627EHF_REG_VBAT, reg); | |
295 | break; | |
296 | case 2: | |
297 | reg = (w83627ehf_read_value(client, W83627EHF_REG_FANDIV2) & 0x3f) | |
298 | | ((data->fan_div[2] & 0x03) << 6); | |
299 | w83627ehf_write_value(client, W83627EHF_REG_FANDIV2, reg); | |
300 | reg = (w83627ehf_read_value(client, W83627EHF_REG_VBAT) & 0x7f) | |
301 | | ((data->fan_div[2] & 0x04) << 5); | |
302 | w83627ehf_write_value(client, W83627EHF_REG_VBAT, reg); | |
303 | break; | |
304 | case 3: | |
305 | reg = (w83627ehf_read_value(client, W83627EHF_REG_DIODE) & 0xfc) | |
306 | | (data->fan_div[3] & 0x03); | |
307 | w83627ehf_write_value(client, W83627EHF_REG_DIODE, reg); | |
308 | reg = (w83627ehf_read_value(client, W83627EHF_REG_SMI_OVT) & 0x7f) | |
309 | | ((data->fan_div[3] & 0x04) << 5); | |
310 | w83627ehf_write_value(client, W83627EHF_REG_SMI_OVT, reg); | |
311 | break; | |
312 | case 4: | |
313 | reg = (w83627ehf_read_value(client, W83627EHF_REG_DIODE) & 0x73) | |
314 | | ((data->fan_div[4] & 0x03) << 3) | |
315 | | ((data->fan_div[4] & 0x04) << 5); | |
316 | w83627ehf_write_value(client, W83627EHF_REG_DIODE, reg); | |
317 | break; | |
318 | } | |
319 | } | |
320 | ||
321 | static struct w83627ehf_data *w83627ehf_update_device(struct device *dev) | |
322 | { | |
323 | struct i2c_client *client = to_i2c_client(dev); | |
324 | struct w83627ehf_data *data = i2c_get_clientdata(client); | |
325 | int i; | |
326 | ||
9a61bf63 | 327 | mutex_lock(&data->update_lock); |
08e7e278 JD |
328 | |
329 | if (time_after(jiffies, data->last_updated + HZ) | |
330 | || !data->valid) { | |
331 | /* Fan clock dividers */ | |
332 | i = w83627ehf_read_value(client, W83627EHF_REG_FANDIV1); | |
333 | data->fan_div[0] = (i >> 4) & 0x03; | |
334 | data->fan_div[1] = (i >> 6) & 0x03; | |
335 | i = w83627ehf_read_value(client, W83627EHF_REG_FANDIV2); | |
336 | data->fan_div[2] = (i >> 6) & 0x03; | |
337 | i = w83627ehf_read_value(client, W83627EHF_REG_VBAT); | |
338 | data->fan_div[0] |= (i >> 3) & 0x04; | |
339 | data->fan_div[1] |= (i >> 4) & 0x04; | |
340 | data->fan_div[2] |= (i >> 5) & 0x04; | |
341 | if (data->has_fan & ((1 << 3) | (1 << 4))) { | |
342 | i = w83627ehf_read_value(client, W83627EHF_REG_DIODE); | |
343 | data->fan_div[3] = i & 0x03; | |
344 | data->fan_div[4] = ((i >> 2) & 0x03) | |
345 | | ((i >> 5) & 0x04); | |
346 | } | |
347 | if (data->has_fan & (1 << 3)) { | |
348 | i = w83627ehf_read_value(client, W83627EHF_REG_SMI_OVT); | |
349 | data->fan_div[3] |= (i >> 5) & 0x04; | |
350 | } | |
351 | ||
352 | /* Measured fan speeds and limits */ | |
353 | for (i = 0; i < 5; i++) { | |
354 | if (!(data->has_fan & (1 << i))) | |
355 | continue; | |
356 | ||
357 | data->fan[i] = w83627ehf_read_value(client, | |
358 | W83627EHF_REG_FAN[i]); | |
359 | data->fan_min[i] = w83627ehf_read_value(client, | |
360 | W83627EHF_REG_FAN_MIN[i]); | |
361 | ||
362 | /* If we failed to measure the fan speed and clock | |
363 | divider can be increased, let's try that for next | |
364 | time */ | |
365 | if (data->fan[i] == 0xff | |
366 | && data->fan_div[i] < 0x07) { | |
367 | dev_dbg(&client->dev, "Increasing fan %d " | |
368 | "clock divider from %u to %u\n", | |
369 | i, div_from_reg(data->fan_div[i]), | |
370 | div_from_reg(data->fan_div[i] + 1)); | |
371 | data->fan_div[i]++; | |
372 | w83627ehf_write_fan_div(client, i); | |
373 | /* Preserve min limit if possible */ | |
374 | if (data->fan_min[i] >= 2 | |
375 | && data->fan_min[i] != 255) | |
376 | w83627ehf_write_value(client, | |
377 | W83627EHF_REG_FAN_MIN[i], | |
378 | (data->fan_min[i] /= 2)); | |
379 | } | |
380 | } | |
381 | ||
382 | /* Measured temperatures and limits */ | |
383 | data->temp1 = w83627ehf_read_value(client, | |
384 | W83627EHF_REG_TEMP1); | |
385 | data->temp1_max = w83627ehf_read_value(client, | |
386 | W83627EHF_REG_TEMP1_OVER); | |
387 | data->temp1_max_hyst = w83627ehf_read_value(client, | |
388 | W83627EHF_REG_TEMP1_HYST); | |
389 | for (i = 0; i < 2; i++) { | |
390 | data->temp[i] = w83627ehf_read_value(client, | |
391 | W83627EHF_REG_TEMP[i]); | |
392 | data->temp_max[i] = w83627ehf_read_value(client, | |
393 | W83627EHF_REG_TEMP_OVER[i]); | |
394 | data->temp_max_hyst[i] = w83627ehf_read_value(client, | |
395 | W83627EHF_REG_TEMP_HYST[i]); | |
396 | } | |
397 | ||
398 | data->last_updated = jiffies; | |
399 | data->valid = 1; | |
400 | } | |
401 | ||
9a61bf63 | 402 | mutex_unlock(&data->update_lock); |
08e7e278 JD |
403 | return data; |
404 | } | |
405 | ||
406 | /* | |
407 | * Sysfs callback functions | |
408 | */ | |
409 | ||
410 | #define show_fan_reg(reg) \ | |
411 | static ssize_t \ | |
412fec82 YM |
412 | show_##reg(struct device *dev, struct device_attribute *attr, \ |
413 | char *buf) \ | |
08e7e278 JD |
414 | { \ |
415 | struct w83627ehf_data *data = w83627ehf_update_device(dev); \ | |
412fec82 YM |
416 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \ |
417 | int nr = sensor_attr->index; \ | |
08e7e278 JD |
418 | return sprintf(buf, "%d\n", \ |
419 | fan_from_reg(data->reg[nr], \ | |
420 | div_from_reg(data->fan_div[nr]))); \ | |
421 | } | |
422 | show_fan_reg(fan); | |
423 | show_fan_reg(fan_min); | |
424 | ||
425 | static ssize_t | |
412fec82 YM |
426 | show_fan_div(struct device *dev, struct device_attribute *attr, |
427 | char *buf) | |
08e7e278 JD |
428 | { |
429 | struct w83627ehf_data *data = w83627ehf_update_device(dev); | |
412fec82 YM |
430 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
431 | int nr = sensor_attr->index; | |
432 | return sprintf(buf, "%u\n", div_from_reg(data->fan_div[nr])); | |
08e7e278 JD |
433 | } |
434 | ||
435 | static ssize_t | |
412fec82 YM |
436 | store_fan_min(struct device *dev, struct device_attribute *attr, |
437 | const char *buf, size_t count) | |
08e7e278 JD |
438 | { |
439 | struct i2c_client *client = to_i2c_client(dev); | |
440 | struct w83627ehf_data *data = i2c_get_clientdata(client); | |
412fec82 YM |
441 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
442 | int nr = sensor_attr->index; | |
08e7e278 JD |
443 | unsigned int val = simple_strtoul(buf, NULL, 10); |
444 | unsigned int reg; | |
445 | u8 new_div; | |
446 | ||
9a61bf63 | 447 | mutex_lock(&data->update_lock); |
08e7e278 JD |
448 | if (!val) { |
449 | /* No min limit, alarm disabled */ | |
450 | data->fan_min[nr] = 255; | |
451 | new_div = data->fan_div[nr]; /* No change */ | |
452 | dev_info(dev, "fan%u low limit and alarm disabled\n", nr + 1); | |
453 | } else if ((reg = 1350000U / val) >= 128 * 255) { | |
454 | /* Speed below this value cannot possibly be represented, | |
455 | even with the highest divider (128) */ | |
456 | data->fan_min[nr] = 254; | |
457 | new_div = 7; /* 128 == (1 << 7) */ | |
458 | dev_warn(dev, "fan%u low limit %u below minimum %u, set to " | |
459 | "minimum\n", nr + 1, val, fan_from_reg(254, 128)); | |
460 | } else if (!reg) { | |
461 | /* Speed above this value cannot possibly be represented, | |
462 | even with the lowest divider (1) */ | |
463 | data->fan_min[nr] = 1; | |
464 | new_div = 0; /* 1 == (1 << 0) */ | |
465 | dev_warn(dev, "fan%u low limit %u above maximum %u, set to " | |
b9110b1c | 466 | "maximum\n", nr + 1, val, fan_from_reg(1, 1)); |
08e7e278 JD |
467 | } else { |
468 | /* Automatically pick the best divider, i.e. the one such | |
469 | that the min limit will correspond to a register value | |
470 | in the 96..192 range */ | |
471 | new_div = 0; | |
472 | while (reg > 192 && new_div < 7) { | |
473 | reg >>= 1; | |
474 | new_div++; | |
475 | } | |
476 | data->fan_min[nr] = reg; | |
477 | } | |
478 | ||
479 | /* Write both the fan clock divider (if it changed) and the new | |
480 | fan min (unconditionally) */ | |
481 | if (new_div != data->fan_div[nr]) { | |
482 | if (new_div > data->fan_div[nr]) | |
483 | data->fan[nr] >>= (data->fan_div[nr] - new_div); | |
484 | else | |
485 | data->fan[nr] <<= (new_div - data->fan_div[nr]); | |
486 | ||
487 | dev_dbg(dev, "fan%u clock divider changed from %u to %u\n", | |
488 | nr + 1, div_from_reg(data->fan_div[nr]), | |
489 | div_from_reg(new_div)); | |
490 | data->fan_div[nr] = new_div; | |
491 | w83627ehf_write_fan_div(client, nr); | |
492 | } | |
493 | w83627ehf_write_value(client, W83627EHF_REG_FAN_MIN[nr], | |
494 | data->fan_min[nr]); | |
9a61bf63 | 495 | mutex_unlock(&data->update_lock); |
08e7e278 JD |
496 | |
497 | return count; | |
498 | } | |
499 | ||
412fec82 YM |
500 | static struct sensor_device_attribute sda_fan_input[] = { |
501 | SENSOR_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0), | |
502 | SENSOR_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1), | |
503 | SENSOR_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2), | |
504 | SENSOR_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3), | |
505 | SENSOR_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 4), | |
506 | }; | |
08e7e278 | 507 | |
412fec82 YM |
508 | static struct sensor_device_attribute sda_fan_min[] = { |
509 | SENSOR_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan_min, | |
510 | store_fan_min, 0), | |
511 | SENSOR_ATTR(fan2_min, S_IWUSR | S_IRUGO, show_fan_min, | |
512 | store_fan_min, 1), | |
513 | SENSOR_ATTR(fan3_min, S_IWUSR | S_IRUGO, show_fan_min, | |
514 | store_fan_min, 2), | |
515 | SENSOR_ATTR(fan4_min, S_IWUSR | S_IRUGO, show_fan_min, | |
516 | store_fan_min, 3), | |
517 | SENSOR_ATTR(fan5_min, S_IWUSR | S_IRUGO, show_fan_min, | |
518 | store_fan_min, 4), | |
519 | }; | |
08e7e278 | 520 | |
412fec82 YM |
521 | static struct sensor_device_attribute sda_fan_div[] = { |
522 | SENSOR_ATTR(fan1_div, S_IRUGO, show_fan_div, NULL, 0), | |
523 | SENSOR_ATTR(fan2_div, S_IRUGO, show_fan_div, NULL, 1), | |
524 | SENSOR_ATTR(fan3_div, S_IRUGO, show_fan_div, NULL, 2), | |
525 | SENSOR_ATTR(fan4_div, S_IRUGO, show_fan_div, NULL, 3), | |
526 | SENSOR_ATTR(fan5_div, S_IRUGO, show_fan_div, NULL, 4), | |
527 | }; | |
528 | ||
529 | static void device_create_file_fan(struct device *dev, int i) | |
530 | { | |
531 | device_create_file(dev, &sda_fan_input[i].dev_attr); | |
532 | device_create_file(dev, &sda_fan_div[i].dev_attr); | |
533 | device_create_file(dev, &sda_fan_min[i].dev_attr); | |
534 | } | |
08e7e278 JD |
535 | |
536 | #define show_temp1_reg(reg) \ | |
537 | static ssize_t \ | |
6f637a64 GKH |
538 | show_##reg(struct device *dev, struct device_attribute *attr, \ |
539 | char *buf) \ | |
08e7e278 JD |
540 | { \ |
541 | struct w83627ehf_data *data = w83627ehf_update_device(dev); \ | |
542 | return sprintf(buf, "%d\n", temp1_from_reg(data->reg)); \ | |
543 | } | |
544 | show_temp1_reg(temp1); | |
545 | show_temp1_reg(temp1_max); | |
546 | show_temp1_reg(temp1_max_hyst); | |
547 | ||
548 | #define store_temp1_reg(REG, reg) \ | |
549 | static ssize_t \ | |
6f637a64 GKH |
550 | store_temp1_##reg(struct device *dev, struct device_attribute *attr, \ |
551 | const char *buf, size_t count) \ | |
08e7e278 JD |
552 | { \ |
553 | struct i2c_client *client = to_i2c_client(dev); \ | |
554 | struct w83627ehf_data *data = i2c_get_clientdata(client); \ | |
555 | u32 val = simple_strtoul(buf, NULL, 10); \ | |
556 | \ | |
9a61bf63 | 557 | mutex_lock(&data->update_lock); \ |
08e7e278 JD |
558 | data->temp1_##reg = temp1_to_reg(val); \ |
559 | w83627ehf_write_value(client, W83627EHF_REG_TEMP1_##REG, \ | |
560 | data->temp1_##reg); \ | |
9a61bf63 | 561 | mutex_unlock(&data->update_lock); \ |
08e7e278 JD |
562 | return count; \ |
563 | } | |
564 | store_temp1_reg(OVER, max); | |
565 | store_temp1_reg(HYST, max_hyst); | |
566 | ||
08e7e278 JD |
567 | #define show_temp_reg(reg) \ |
568 | static ssize_t \ | |
412fec82 YM |
569 | show_##reg(struct device *dev, struct device_attribute *attr, \ |
570 | char *buf) \ | |
08e7e278 JD |
571 | { \ |
572 | struct w83627ehf_data *data = w83627ehf_update_device(dev); \ | |
412fec82 YM |
573 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \ |
574 | int nr = sensor_attr->index; \ | |
08e7e278 JD |
575 | return sprintf(buf, "%d\n", \ |
576 | LM75_TEMP_FROM_REG(data->reg[nr])); \ | |
577 | } | |
578 | show_temp_reg(temp); | |
579 | show_temp_reg(temp_max); | |
580 | show_temp_reg(temp_max_hyst); | |
581 | ||
582 | #define store_temp_reg(REG, reg) \ | |
583 | static ssize_t \ | |
412fec82 YM |
584 | store_##reg(struct device *dev, struct device_attribute *attr, \ |
585 | const char *buf, size_t count) \ | |
08e7e278 JD |
586 | { \ |
587 | struct i2c_client *client = to_i2c_client(dev); \ | |
588 | struct w83627ehf_data *data = i2c_get_clientdata(client); \ | |
412fec82 YM |
589 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \ |
590 | int nr = sensor_attr->index; \ | |
08e7e278 JD |
591 | u32 val = simple_strtoul(buf, NULL, 10); \ |
592 | \ | |
9a61bf63 | 593 | mutex_lock(&data->update_lock); \ |
08e7e278 JD |
594 | data->reg[nr] = LM75_TEMP_TO_REG(val); \ |
595 | w83627ehf_write_value(client, W83627EHF_REG_TEMP_##REG[nr], \ | |
596 | data->reg[nr]); \ | |
9a61bf63 | 597 | mutex_unlock(&data->update_lock); \ |
08e7e278 JD |
598 | return count; \ |
599 | } | |
600 | store_temp_reg(OVER, temp_max); | |
601 | store_temp_reg(HYST, temp_max_hyst); | |
602 | ||
412fec82 YM |
603 | static struct sensor_device_attribute sda_temp[] = { |
604 | SENSOR_ATTR(temp1_input, S_IRUGO, show_temp1, NULL, 0), | |
605 | SENSOR_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 0), | |
606 | SENSOR_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 1), | |
607 | SENSOR_ATTR(temp1_max, S_IRUGO | S_IWUSR, show_temp1_max, | |
608 | store_temp1_max, 0), | |
609 | SENSOR_ATTR(temp2_max, S_IRUGO | S_IWUSR, show_temp_max, | |
610 | store_temp_max, 0), | |
611 | SENSOR_ATTR(temp3_max, S_IRUGO | S_IWUSR, show_temp_max, | |
612 | store_temp_max, 1), | |
613 | SENSOR_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, show_temp1_max_hyst, | |
614 | store_temp1_max_hyst, 0), | |
615 | SENSOR_ATTR(temp2_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst, | |
616 | store_temp_max_hyst, 0), | |
617 | SENSOR_ATTR(temp3_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst, | |
618 | store_temp_max_hyst, 1), | |
619 | }; | |
08e7e278 JD |
620 | |
621 | /* | |
622 | * Driver and client management | |
623 | */ | |
624 | ||
625 | static struct i2c_driver w83627ehf_driver; | |
626 | ||
627 | static void w83627ehf_init_client(struct i2c_client *client) | |
628 | { | |
629 | int i; | |
630 | u8 tmp; | |
631 | ||
632 | /* Start monitoring is needed */ | |
633 | tmp = w83627ehf_read_value(client, W83627EHF_REG_CONFIG); | |
634 | if (!(tmp & 0x01)) | |
635 | w83627ehf_write_value(client, W83627EHF_REG_CONFIG, | |
636 | tmp | 0x01); | |
637 | ||
638 | /* Enable temp2 and temp3 if needed */ | |
639 | for (i = 0; i < 2; i++) { | |
640 | tmp = w83627ehf_read_value(client, | |
641 | W83627EHF_REG_TEMP_CONFIG[i]); | |
642 | if (tmp & 0x01) | |
643 | w83627ehf_write_value(client, | |
644 | W83627EHF_REG_TEMP_CONFIG[i], | |
645 | tmp & 0xfe); | |
646 | } | |
647 | } | |
648 | ||
2d8672c5 | 649 | static int w83627ehf_detect(struct i2c_adapter *adapter) |
08e7e278 JD |
650 | { |
651 | struct i2c_client *client; | |
652 | struct w83627ehf_data *data; | |
412fec82 | 653 | struct device *dev; |
08e7e278 JD |
654 | int i, err = 0; |
655 | ||
ada0c2f8 | 656 | if (!request_region(address + REGION_OFFSET, REGION_LENGTH, |
cdaf7934 | 657 | w83627ehf_driver.driver.name)) { |
08e7e278 JD |
658 | err = -EBUSY; |
659 | goto exit; | |
660 | } | |
661 | ||
ba9c2e8d | 662 | if (!(data = kzalloc(sizeof(struct w83627ehf_data), GFP_KERNEL))) { |
08e7e278 JD |
663 | err = -ENOMEM; |
664 | goto exit_release; | |
665 | } | |
08e7e278 JD |
666 | |
667 | client = &data->client; | |
668 | i2c_set_clientdata(client, data); | |
669 | client->addr = address; | |
9a61bf63 | 670 | mutex_init(&data->lock); |
08e7e278 JD |
671 | client->adapter = adapter; |
672 | client->driver = &w83627ehf_driver; | |
673 | client->flags = 0; | |
412fec82 | 674 | dev = &client->dev; |
08e7e278 JD |
675 | |
676 | strlcpy(client->name, "w83627ehf", I2C_NAME_SIZE); | |
677 | data->valid = 0; | |
9a61bf63 | 678 | mutex_init(&data->update_lock); |
08e7e278 JD |
679 | |
680 | /* Tell the i2c layer a new client has arrived */ | |
681 | if ((err = i2c_attach_client(client))) | |
682 | goto exit_free; | |
683 | ||
684 | /* Initialize the chip */ | |
685 | w83627ehf_init_client(client); | |
686 | ||
687 | /* A few vars need to be filled upon startup */ | |
688 | for (i = 0; i < 5; i++) | |
689 | data->fan_min[i] = w83627ehf_read_value(client, | |
690 | W83627EHF_REG_FAN_MIN[i]); | |
691 | ||
692 | /* It looks like fan4 and fan5 pins can be alternatively used | |
693 | as fan on/off switches */ | |
694 | data->has_fan = 0x07; /* fan1, fan2 and fan3 */ | |
695 | i = w83627ehf_read_value(client, W83627EHF_REG_FANDIV1); | |
696 | if (i & (1 << 2)) | |
697 | data->has_fan |= (1 << 3); | |
698 | if (i & (1 << 0)) | |
699 | data->has_fan |= (1 << 4); | |
700 | ||
701 | /* Register sysfs hooks */ | |
412fec82 | 702 | data->class_dev = hwmon_device_register(dev); |
943b0830 MH |
703 | if (IS_ERR(data->class_dev)) { |
704 | err = PTR_ERR(data->class_dev); | |
705 | goto exit_detach; | |
706 | } | |
707 | ||
412fec82 YM |
708 | for (i = 0; i < 5; i++) { |
709 | if (data->has_fan & (1 << i)) | |
710 | device_create_file_fan(dev, i); | |
08e7e278 | 711 | } |
412fec82 YM |
712 | for (i = 0; i < ARRAY_SIZE(sda_temp); i++) |
713 | device_create_file(dev, &sda_temp[i].dev_attr); | |
08e7e278 JD |
714 | |
715 | return 0; | |
716 | ||
943b0830 MH |
717 | exit_detach: |
718 | i2c_detach_client(client); | |
08e7e278 JD |
719 | exit_free: |
720 | kfree(data); | |
721 | exit_release: | |
ada0c2f8 | 722 | release_region(address + REGION_OFFSET, REGION_LENGTH); |
08e7e278 JD |
723 | exit: |
724 | return err; | |
725 | } | |
726 | ||
08e7e278 JD |
727 | static int w83627ehf_detach_client(struct i2c_client *client) |
728 | { | |
943b0830 | 729 | struct w83627ehf_data *data = i2c_get_clientdata(client); |
08e7e278 JD |
730 | int err; |
731 | ||
943b0830 MH |
732 | hwmon_device_unregister(data->class_dev); |
733 | ||
7bef5594 | 734 | if ((err = i2c_detach_client(client))) |
08e7e278 | 735 | return err; |
ada0c2f8 | 736 | release_region(client->addr + REGION_OFFSET, REGION_LENGTH); |
943b0830 | 737 | kfree(data); |
08e7e278 JD |
738 | |
739 | return 0; | |
740 | } | |
741 | ||
742 | static struct i2c_driver w83627ehf_driver = { | |
cdaf7934 | 743 | .driver = { |
cdaf7934 LR |
744 | .name = "w83627ehf", |
745 | }, | |
2d8672c5 | 746 | .attach_adapter = w83627ehf_detect, |
08e7e278 JD |
747 | .detach_client = w83627ehf_detach_client, |
748 | }; | |
749 | ||
2d8672c5 | 750 | static int __init w83627ehf_find(int sioaddr, unsigned short *addr) |
08e7e278 JD |
751 | { |
752 | u16 val; | |
753 | ||
754 | REG = sioaddr; | |
755 | VAL = sioaddr + 1; | |
756 | superio_enter(); | |
757 | ||
758 | val = (superio_inb(SIO_REG_DEVID) << 8) | |
759 | | superio_inb(SIO_REG_DEVID + 1); | |
760 | if ((val & SIO_ID_MASK) != SIO_W83627EHF_ID) { | |
761 | superio_exit(); | |
762 | return -ENODEV; | |
763 | } | |
764 | ||
765 | superio_select(W83627EHF_LD_HWM); | |
766 | val = (superio_inb(SIO_REG_ADDR) << 8) | |
767 | | superio_inb(SIO_REG_ADDR + 1); | |
ada0c2f8 | 768 | *addr = val & REGION_ALIGNMENT; |
2d8672c5 | 769 | if (*addr == 0) { |
08e7e278 JD |
770 | superio_exit(); |
771 | return -ENODEV; | |
772 | } | |
773 | ||
774 | /* Activate logical device if needed */ | |
775 | val = superio_inb(SIO_REG_ENABLE); | |
776 | if (!(val & 0x01)) | |
777 | superio_outb(SIO_REG_ENABLE, val | 0x01); | |
778 | ||
779 | superio_exit(); | |
780 | return 0; | |
781 | } | |
782 | ||
783 | static int __init sensors_w83627ehf_init(void) | |
784 | { | |
2d8672c5 JD |
785 | if (w83627ehf_find(0x2e, &address) |
786 | && w83627ehf_find(0x4e, &address)) | |
08e7e278 JD |
787 | return -ENODEV; |
788 | ||
fde09509 | 789 | return i2c_isa_add_driver(&w83627ehf_driver); |
08e7e278 JD |
790 | } |
791 | ||
792 | static void __exit sensors_w83627ehf_exit(void) | |
793 | { | |
fde09509 | 794 | i2c_isa_del_driver(&w83627ehf_driver); |
08e7e278 JD |
795 | } |
796 | ||
797 | MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>"); | |
798 | MODULE_DESCRIPTION("W83627EHF driver"); | |
799 | MODULE_LICENSE("GPL"); | |
800 | ||
801 | module_init(sensors_w83627ehf_init); | |
802 | module_exit(sensors_w83627ehf_exit); |