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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 MH |
44 | #include <linux/hwmon.h> |
45 | #include <linux/err.h> | |
08e7e278 JD |
46 | #include <asm/io.h> |
47 | #include "lm75.h" | |
48 | ||
2d8672c5 JD |
49 | /* The actual ISA address is read from Super-I/O configuration space */ |
50 | static unsigned short address; | |
08e7e278 JD |
51 | |
52 | /* | |
53 | * Super-I/O constants and functions | |
54 | */ | |
55 | ||
56 | static int REG; /* The register to read/write */ | |
57 | static int VAL; /* The value to read/write */ | |
58 | ||
59 | #define W83627EHF_LD_HWM 0x0b | |
60 | ||
61 | #define SIO_REG_LDSEL 0x07 /* Logical device select */ | |
62 | #define SIO_REG_DEVID 0x20 /* Device ID (2 bytes) */ | |
63 | #define SIO_REG_ENABLE 0x30 /* Logical device enable */ | |
64 | #define SIO_REG_ADDR 0x60 /* Logical device address (2 bytes) */ | |
65 | ||
66 | #define SIO_W83627EHF_ID 0x8840 | |
67 | #define SIO_ID_MASK 0xFFC0 | |
68 | ||
69 | static inline void | |
70 | superio_outb(int reg, int val) | |
71 | { | |
72 | outb(reg, REG); | |
73 | outb(val, VAL); | |
74 | } | |
75 | ||
76 | static inline int | |
77 | superio_inb(int reg) | |
78 | { | |
79 | outb(reg, REG); | |
80 | return inb(VAL); | |
81 | } | |
82 | ||
83 | static inline void | |
84 | superio_select(int ld) | |
85 | { | |
86 | outb(SIO_REG_LDSEL, REG); | |
87 | outb(ld, VAL); | |
88 | } | |
89 | ||
90 | static inline void | |
91 | superio_enter(void) | |
92 | { | |
93 | outb(0x87, REG); | |
94 | outb(0x87, REG); | |
95 | } | |
96 | ||
97 | static inline void | |
98 | superio_exit(void) | |
99 | { | |
100 | outb(0x02, REG); | |
101 | outb(0x02, VAL); | |
102 | } | |
103 | ||
104 | /* | |
105 | * ISA constants | |
106 | */ | |
107 | ||
ada0c2f8 PV |
108 | #define REGION_ALIGNMENT ~7 |
109 | #define REGION_OFFSET 5 | |
110 | #define REGION_LENGTH 2 | |
08e7e278 JD |
111 | #define ADDR_REG_OFFSET 5 |
112 | #define DATA_REG_OFFSET 6 | |
113 | ||
114 | #define W83627EHF_REG_BANK 0x4E | |
115 | #define W83627EHF_REG_CONFIG 0x40 | |
116 | #define W83627EHF_REG_CHIP_ID 0x49 | |
117 | #define W83627EHF_REG_MAN_ID 0x4F | |
118 | ||
119 | static const u16 W83627EHF_REG_FAN[] = { 0x28, 0x29, 0x2a, 0x3f, 0x553 }; | |
120 | static const u16 W83627EHF_REG_FAN_MIN[] = { 0x3b, 0x3c, 0x3d, 0x3e, 0x55c }; | |
121 | ||
122 | #define W83627EHF_REG_TEMP1 0x27 | |
123 | #define W83627EHF_REG_TEMP1_HYST 0x3a | |
124 | #define W83627EHF_REG_TEMP1_OVER 0x39 | |
125 | static const u16 W83627EHF_REG_TEMP[] = { 0x150, 0x250 }; | |
126 | static const u16 W83627EHF_REG_TEMP_HYST[] = { 0x153, 0x253 }; | |
127 | static const u16 W83627EHF_REG_TEMP_OVER[] = { 0x155, 0x255 }; | |
128 | static const u16 W83627EHF_REG_TEMP_CONFIG[] = { 0x152, 0x252 }; | |
129 | ||
130 | /* Fan clock dividers are spread over the following five registers */ | |
131 | #define W83627EHF_REG_FANDIV1 0x47 | |
132 | #define W83627EHF_REG_FANDIV2 0x4B | |
133 | #define W83627EHF_REG_VBAT 0x5D | |
134 | #define W83627EHF_REG_DIODE 0x59 | |
135 | #define W83627EHF_REG_SMI_OVT 0x4C | |
136 | ||
137 | /* | |
138 | * Conversions | |
139 | */ | |
140 | ||
141 | static inline unsigned int | |
142 | fan_from_reg(u8 reg, unsigned int div) | |
143 | { | |
144 | if (reg == 0 || reg == 255) | |
145 | return 0; | |
146 | return 1350000U / (reg * div); | |
147 | } | |
148 | ||
149 | static inline unsigned int | |
150 | div_from_reg(u8 reg) | |
151 | { | |
152 | return 1 << reg; | |
153 | } | |
154 | ||
155 | static inline int | |
156 | temp1_from_reg(s8 reg) | |
157 | { | |
158 | return reg * 1000; | |
159 | } | |
160 | ||
161 | static inline s8 | |
162 | temp1_to_reg(int temp) | |
163 | { | |
164 | if (temp <= -128000) | |
165 | return -128; | |
166 | if (temp >= 127000) | |
167 | return 127; | |
168 | if (temp < 0) | |
169 | return (temp - 500) / 1000; | |
170 | return (temp + 500) / 1000; | |
171 | } | |
172 | ||
173 | /* | |
174 | * Data structures and manipulation thereof | |
175 | */ | |
176 | ||
177 | struct w83627ehf_data { | |
178 | struct i2c_client client; | |
943b0830 | 179 | struct class_device *class_dev; |
08e7e278 JD |
180 | struct semaphore lock; |
181 | ||
182 | struct semaphore update_lock; | |
183 | char valid; /* !=0 if following fields are valid */ | |
184 | unsigned long last_updated; /* In jiffies */ | |
185 | ||
186 | /* Register values */ | |
187 | u8 fan[5]; | |
188 | u8 fan_min[5]; | |
189 | u8 fan_div[5]; | |
190 | u8 has_fan; /* some fan inputs can be disabled */ | |
191 | s8 temp1; | |
192 | s8 temp1_max; | |
193 | s8 temp1_max_hyst; | |
194 | s16 temp[2]; | |
195 | s16 temp_max[2]; | |
196 | s16 temp_max_hyst[2]; | |
197 | }; | |
198 | ||
199 | static inline int is_word_sized(u16 reg) | |
200 | { | |
201 | return (((reg & 0xff00) == 0x100 | |
202 | || (reg & 0xff00) == 0x200) | |
203 | && ((reg & 0x00ff) == 0x50 | |
204 | || (reg & 0x00ff) == 0x53 | |
205 | || (reg & 0x00ff) == 0x55)); | |
206 | } | |
207 | ||
208 | /* We assume that the default bank is 0, thus the following two functions do | |
209 | nothing for registers which live in bank 0. For others, they respectively | |
210 | set the bank register to the correct value (before the register is | |
211 | accessed), and back to 0 (afterwards). */ | |
212 | static inline void w83627ehf_set_bank(struct i2c_client *client, u16 reg) | |
213 | { | |
214 | if (reg & 0xff00) { | |
215 | outb_p(W83627EHF_REG_BANK, client->addr + ADDR_REG_OFFSET); | |
216 | outb_p(reg >> 8, client->addr + DATA_REG_OFFSET); | |
217 | } | |
218 | } | |
219 | ||
220 | static inline void w83627ehf_reset_bank(struct i2c_client *client, u16 reg) | |
221 | { | |
222 | if (reg & 0xff00) { | |
223 | outb_p(W83627EHF_REG_BANK, client->addr + ADDR_REG_OFFSET); | |
224 | outb_p(0, client->addr + DATA_REG_OFFSET); | |
225 | } | |
226 | } | |
227 | ||
228 | static u16 w83627ehf_read_value(struct i2c_client *client, u16 reg) | |
229 | { | |
230 | struct w83627ehf_data *data = i2c_get_clientdata(client); | |
231 | int res, word_sized = is_word_sized(reg); | |
232 | ||
233 | down(&data->lock); | |
234 | ||
235 | w83627ehf_set_bank(client, reg); | |
236 | outb_p(reg & 0xff, client->addr + ADDR_REG_OFFSET); | |
237 | res = inb_p(client->addr + DATA_REG_OFFSET); | |
238 | if (word_sized) { | |
239 | outb_p((reg & 0xff) + 1, | |
240 | client->addr + ADDR_REG_OFFSET); | |
241 | res = (res << 8) + inb_p(client->addr + DATA_REG_OFFSET); | |
242 | } | |
243 | w83627ehf_reset_bank(client, reg); | |
244 | ||
245 | up(&data->lock); | |
246 | ||
247 | return res; | |
248 | } | |
249 | ||
250 | static int w83627ehf_write_value(struct i2c_client *client, u16 reg, u16 value) | |
251 | { | |
252 | struct w83627ehf_data *data = i2c_get_clientdata(client); | |
253 | int word_sized = is_word_sized(reg); | |
254 | ||
255 | down(&data->lock); | |
256 | ||
257 | w83627ehf_set_bank(client, reg); | |
258 | outb_p(reg & 0xff, client->addr + ADDR_REG_OFFSET); | |
259 | if (word_sized) { | |
260 | outb_p(value >> 8, client->addr + DATA_REG_OFFSET); | |
261 | outb_p((reg & 0xff) + 1, | |
262 | client->addr + ADDR_REG_OFFSET); | |
263 | } | |
264 | outb_p(value & 0xff, client->addr + DATA_REG_OFFSET); | |
265 | w83627ehf_reset_bank(client, reg); | |
266 | ||
267 | up(&data->lock); | |
268 | return 0; | |
269 | } | |
270 | ||
271 | /* This function assumes that the caller holds data->update_lock */ | |
272 | static void w83627ehf_write_fan_div(struct i2c_client *client, int nr) | |
273 | { | |
274 | struct w83627ehf_data *data = i2c_get_clientdata(client); | |
275 | u8 reg; | |
276 | ||
277 | switch (nr) { | |
278 | case 0: | |
279 | reg = (w83627ehf_read_value(client, W83627EHF_REG_FANDIV1) & 0xcf) | |
280 | | ((data->fan_div[0] & 0x03) << 4); | |
281 | w83627ehf_write_value(client, W83627EHF_REG_FANDIV1, reg); | |
282 | reg = (w83627ehf_read_value(client, W83627EHF_REG_VBAT) & 0xdf) | |
283 | | ((data->fan_div[0] & 0x04) << 3); | |
284 | w83627ehf_write_value(client, W83627EHF_REG_VBAT, reg); | |
285 | break; | |
286 | case 1: | |
287 | reg = (w83627ehf_read_value(client, W83627EHF_REG_FANDIV1) & 0x3f) | |
288 | | ((data->fan_div[1] & 0x03) << 6); | |
289 | w83627ehf_write_value(client, W83627EHF_REG_FANDIV1, reg); | |
290 | reg = (w83627ehf_read_value(client, W83627EHF_REG_VBAT) & 0xbf) | |
291 | | ((data->fan_div[1] & 0x04) << 4); | |
292 | w83627ehf_write_value(client, W83627EHF_REG_VBAT, reg); | |
293 | break; | |
294 | case 2: | |
295 | reg = (w83627ehf_read_value(client, W83627EHF_REG_FANDIV2) & 0x3f) | |
296 | | ((data->fan_div[2] & 0x03) << 6); | |
297 | w83627ehf_write_value(client, W83627EHF_REG_FANDIV2, reg); | |
298 | reg = (w83627ehf_read_value(client, W83627EHF_REG_VBAT) & 0x7f) | |
299 | | ((data->fan_div[2] & 0x04) << 5); | |
300 | w83627ehf_write_value(client, W83627EHF_REG_VBAT, reg); | |
301 | break; | |
302 | case 3: | |
303 | reg = (w83627ehf_read_value(client, W83627EHF_REG_DIODE) & 0xfc) | |
304 | | (data->fan_div[3] & 0x03); | |
305 | w83627ehf_write_value(client, W83627EHF_REG_DIODE, reg); | |
306 | reg = (w83627ehf_read_value(client, W83627EHF_REG_SMI_OVT) & 0x7f) | |
307 | | ((data->fan_div[3] & 0x04) << 5); | |
308 | w83627ehf_write_value(client, W83627EHF_REG_SMI_OVT, reg); | |
309 | break; | |
310 | case 4: | |
311 | reg = (w83627ehf_read_value(client, W83627EHF_REG_DIODE) & 0x73) | |
312 | | ((data->fan_div[4] & 0x03) << 3) | |
313 | | ((data->fan_div[4] & 0x04) << 5); | |
314 | w83627ehf_write_value(client, W83627EHF_REG_DIODE, reg); | |
315 | break; | |
316 | } | |
317 | } | |
318 | ||
319 | static struct w83627ehf_data *w83627ehf_update_device(struct device *dev) | |
320 | { | |
321 | struct i2c_client *client = to_i2c_client(dev); | |
322 | struct w83627ehf_data *data = i2c_get_clientdata(client); | |
323 | int i; | |
324 | ||
325 | down(&data->update_lock); | |
326 | ||
327 | if (time_after(jiffies, data->last_updated + HZ) | |
328 | || !data->valid) { | |
329 | /* Fan clock dividers */ | |
330 | i = w83627ehf_read_value(client, W83627EHF_REG_FANDIV1); | |
331 | data->fan_div[0] = (i >> 4) & 0x03; | |
332 | data->fan_div[1] = (i >> 6) & 0x03; | |
333 | i = w83627ehf_read_value(client, W83627EHF_REG_FANDIV2); | |
334 | data->fan_div[2] = (i >> 6) & 0x03; | |
335 | i = w83627ehf_read_value(client, W83627EHF_REG_VBAT); | |
336 | data->fan_div[0] |= (i >> 3) & 0x04; | |
337 | data->fan_div[1] |= (i >> 4) & 0x04; | |
338 | data->fan_div[2] |= (i >> 5) & 0x04; | |
339 | if (data->has_fan & ((1 << 3) | (1 << 4))) { | |
340 | i = w83627ehf_read_value(client, W83627EHF_REG_DIODE); | |
341 | data->fan_div[3] = i & 0x03; | |
342 | data->fan_div[4] = ((i >> 2) & 0x03) | |
343 | | ((i >> 5) & 0x04); | |
344 | } | |
345 | if (data->has_fan & (1 << 3)) { | |
346 | i = w83627ehf_read_value(client, W83627EHF_REG_SMI_OVT); | |
347 | data->fan_div[3] |= (i >> 5) & 0x04; | |
348 | } | |
349 | ||
350 | /* Measured fan speeds and limits */ | |
351 | for (i = 0; i < 5; i++) { | |
352 | if (!(data->has_fan & (1 << i))) | |
353 | continue; | |
354 | ||
355 | data->fan[i] = w83627ehf_read_value(client, | |
356 | W83627EHF_REG_FAN[i]); | |
357 | data->fan_min[i] = w83627ehf_read_value(client, | |
358 | W83627EHF_REG_FAN_MIN[i]); | |
359 | ||
360 | /* If we failed to measure the fan speed and clock | |
361 | divider can be increased, let's try that for next | |
362 | time */ | |
363 | if (data->fan[i] == 0xff | |
364 | && data->fan_div[i] < 0x07) { | |
365 | dev_dbg(&client->dev, "Increasing fan %d " | |
366 | "clock divider from %u to %u\n", | |
367 | i, div_from_reg(data->fan_div[i]), | |
368 | div_from_reg(data->fan_div[i] + 1)); | |
369 | data->fan_div[i]++; | |
370 | w83627ehf_write_fan_div(client, i); | |
371 | /* Preserve min limit if possible */ | |
372 | if (data->fan_min[i] >= 2 | |
373 | && data->fan_min[i] != 255) | |
374 | w83627ehf_write_value(client, | |
375 | W83627EHF_REG_FAN_MIN[i], | |
376 | (data->fan_min[i] /= 2)); | |
377 | } | |
378 | } | |
379 | ||
380 | /* Measured temperatures and limits */ | |
381 | data->temp1 = w83627ehf_read_value(client, | |
382 | W83627EHF_REG_TEMP1); | |
383 | data->temp1_max = w83627ehf_read_value(client, | |
384 | W83627EHF_REG_TEMP1_OVER); | |
385 | data->temp1_max_hyst = w83627ehf_read_value(client, | |
386 | W83627EHF_REG_TEMP1_HYST); | |
387 | for (i = 0; i < 2; i++) { | |
388 | data->temp[i] = w83627ehf_read_value(client, | |
389 | W83627EHF_REG_TEMP[i]); | |
390 | data->temp_max[i] = w83627ehf_read_value(client, | |
391 | W83627EHF_REG_TEMP_OVER[i]); | |
392 | data->temp_max_hyst[i] = w83627ehf_read_value(client, | |
393 | W83627EHF_REG_TEMP_HYST[i]); | |
394 | } | |
395 | ||
396 | data->last_updated = jiffies; | |
397 | data->valid = 1; | |
398 | } | |
399 | ||
400 | up(&data->update_lock); | |
401 | return data; | |
402 | } | |
403 | ||
404 | /* | |
405 | * Sysfs callback functions | |
406 | */ | |
407 | ||
408 | #define show_fan_reg(reg) \ | |
409 | static ssize_t \ | |
410 | show_##reg(struct device *dev, char *buf, int nr) \ | |
411 | { \ | |
412 | struct w83627ehf_data *data = w83627ehf_update_device(dev); \ | |
413 | return sprintf(buf, "%d\n", \ | |
414 | fan_from_reg(data->reg[nr], \ | |
415 | div_from_reg(data->fan_div[nr]))); \ | |
416 | } | |
417 | show_fan_reg(fan); | |
418 | show_fan_reg(fan_min); | |
419 | ||
420 | static ssize_t | |
421 | show_fan_div(struct device *dev, char *buf, int nr) | |
422 | { | |
423 | struct w83627ehf_data *data = w83627ehf_update_device(dev); | |
424 | return sprintf(buf, "%u\n", | |
425 | div_from_reg(data->fan_div[nr])); | |
426 | } | |
427 | ||
428 | static ssize_t | |
429 | store_fan_min(struct device *dev, const char *buf, size_t count, int nr) | |
430 | { | |
431 | struct i2c_client *client = to_i2c_client(dev); | |
432 | struct w83627ehf_data *data = i2c_get_clientdata(client); | |
433 | unsigned int val = simple_strtoul(buf, NULL, 10); | |
434 | unsigned int reg; | |
435 | u8 new_div; | |
436 | ||
437 | down(&data->update_lock); | |
438 | if (!val) { | |
439 | /* No min limit, alarm disabled */ | |
440 | data->fan_min[nr] = 255; | |
441 | new_div = data->fan_div[nr]; /* No change */ | |
442 | dev_info(dev, "fan%u low limit and alarm disabled\n", nr + 1); | |
443 | } else if ((reg = 1350000U / val) >= 128 * 255) { | |
444 | /* Speed below this value cannot possibly be represented, | |
445 | even with the highest divider (128) */ | |
446 | data->fan_min[nr] = 254; | |
447 | new_div = 7; /* 128 == (1 << 7) */ | |
448 | dev_warn(dev, "fan%u low limit %u below minimum %u, set to " | |
449 | "minimum\n", nr + 1, val, fan_from_reg(254, 128)); | |
450 | } else if (!reg) { | |
451 | /* Speed above this value cannot possibly be represented, | |
452 | even with the lowest divider (1) */ | |
453 | data->fan_min[nr] = 1; | |
454 | new_div = 0; /* 1 == (1 << 0) */ | |
455 | dev_warn(dev, "fan%u low limit %u above maximum %u, set to " | |
b9110b1c | 456 | "maximum\n", nr + 1, val, fan_from_reg(1, 1)); |
08e7e278 JD |
457 | } else { |
458 | /* Automatically pick the best divider, i.e. the one such | |
459 | that the min limit will correspond to a register value | |
460 | in the 96..192 range */ | |
461 | new_div = 0; | |
462 | while (reg > 192 && new_div < 7) { | |
463 | reg >>= 1; | |
464 | new_div++; | |
465 | } | |
466 | data->fan_min[nr] = reg; | |
467 | } | |
468 | ||
469 | /* Write both the fan clock divider (if it changed) and the new | |
470 | fan min (unconditionally) */ | |
471 | if (new_div != data->fan_div[nr]) { | |
472 | if (new_div > data->fan_div[nr]) | |
473 | data->fan[nr] >>= (data->fan_div[nr] - new_div); | |
474 | else | |
475 | data->fan[nr] <<= (new_div - data->fan_div[nr]); | |
476 | ||
477 | dev_dbg(dev, "fan%u clock divider changed from %u to %u\n", | |
478 | nr + 1, div_from_reg(data->fan_div[nr]), | |
479 | div_from_reg(new_div)); | |
480 | data->fan_div[nr] = new_div; | |
481 | w83627ehf_write_fan_div(client, nr); | |
482 | } | |
483 | w83627ehf_write_value(client, W83627EHF_REG_FAN_MIN[nr], | |
484 | data->fan_min[nr]); | |
485 | up(&data->update_lock); | |
486 | ||
487 | return count; | |
488 | } | |
489 | ||
490 | #define sysfs_fan_offset(offset) \ | |
491 | static ssize_t \ | |
6f637a64 GKH |
492 | show_reg_fan_##offset(struct device *dev, struct device_attribute *attr, \ |
493 | char *buf) \ | |
08e7e278 JD |
494 | { \ |
495 | return show_fan(dev, buf, offset-1); \ | |
496 | } \ | |
497 | static DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ | |
498 | show_reg_fan_##offset, NULL); | |
499 | ||
500 | #define sysfs_fan_min_offset(offset) \ | |
501 | static ssize_t \ | |
6f637a64 GKH |
502 | show_reg_fan##offset##_min(struct device *dev, struct device_attribute *attr, \ |
503 | char *buf) \ | |
08e7e278 JD |
504 | { \ |
505 | return show_fan_min(dev, buf, offset-1); \ | |
506 | } \ | |
507 | static ssize_t \ | |
6f637a64 GKH |
508 | store_reg_fan##offset##_min(struct device *dev, struct device_attribute *attr, \ |
509 | const char *buf, size_t count) \ | |
08e7e278 JD |
510 | { \ |
511 | return store_fan_min(dev, buf, count, offset-1); \ | |
512 | } \ | |
513 | static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ | |
514 | show_reg_fan##offset##_min, \ | |
515 | store_reg_fan##offset##_min); | |
516 | ||
517 | #define sysfs_fan_div_offset(offset) \ | |
518 | static ssize_t \ | |
6f637a64 GKH |
519 | show_reg_fan##offset##_div(struct device *dev, struct device_attribute *attr, \ |
520 | char *buf) \ | |
08e7e278 JD |
521 | { \ |
522 | return show_fan_div(dev, buf, offset - 1); \ | |
523 | } \ | |
524 | static DEVICE_ATTR(fan##offset##_div, S_IRUGO, \ | |
525 | show_reg_fan##offset##_div, NULL); | |
526 | ||
527 | sysfs_fan_offset(1); | |
528 | sysfs_fan_min_offset(1); | |
529 | sysfs_fan_div_offset(1); | |
530 | sysfs_fan_offset(2); | |
531 | sysfs_fan_min_offset(2); | |
532 | sysfs_fan_div_offset(2); | |
533 | sysfs_fan_offset(3); | |
534 | sysfs_fan_min_offset(3); | |
535 | sysfs_fan_div_offset(3); | |
536 | sysfs_fan_offset(4); | |
537 | sysfs_fan_min_offset(4); | |
538 | sysfs_fan_div_offset(4); | |
539 | sysfs_fan_offset(5); | |
540 | sysfs_fan_min_offset(5); | |
541 | sysfs_fan_div_offset(5); | |
542 | ||
543 | #define show_temp1_reg(reg) \ | |
544 | static ssize_t \ | |
6f637a64 GKH |
545 | show_##reg(struct device *dev, struct device_attribute *attr, \ |
546 | char *buf) \ | |
08e7e278 JD |
547 | { \ |
548 | struct w83627ehf_data *data = w83627ehf_update_device(dev); \ | |
549 | return sprintf(buf, "%d\n", temp1_from_reg(data->reg)); \ | |
550 | } | |
551 | show_temp1_reg(temp1); | |
552 | show_temp1_reg(temp1_max); | |
553 | show_temp1_reg(temp1_max_hyst); | |
554 | ||
555 | #define store_temp1_reg(REG, reg) \ | |
556 | static ssize_t \ | |
6f637a64 GKH |
557 | store_temp1_##reg(struct device *dev, struct device_attribute *attr, \ |
558 | const char *buf, size_t count) \ | |
08e7e278 JD |
559 | { \ |
560 | struct i2c_client *client = to_i2c_client(dev); \ | |
561 | struct w83627ehf_data *data = i2c_get_clientdata(client); \ | |
562 | u32 val = simple_strtoul(buf, NULL, 10); \ | |
563 | \ | |
564 | down(&data->update_lock); \ | |
565 | data->temp1_##reg = temp1_to_reg(val); \ | |
566 | w83627ehf_write_value(client, W83627EHF_REG_TEMP1_##REG, \ | |
567 | data->temp1_##reg); \ | |
568 | up(&data->update_lock); \ | |
569 | return count; \ | |
570 | } | |
571 | store_temp1_reg(OVER, max); | |
572 | store_temp1_reg(HYST, max_hyst); | |
573 | ||
574 | static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp1, NULL); | |
575 | static DEVICE_ATTR(temp1_max, S_IRUGO| S_IWUSR, | |
576 | show_temp1_max, store_temp1_max); | |
577 | static DEVICE_ATTR(temp1_max_hyst, S_IRUGO| S_IWUSR, | |
578 | show_temp1_max_hyst, store_temp1_max_hyst); | |
579 | ||
580 | #define show_temp_reg(reg) \ | |
581 | static ssize_t \ | |
582 | show_##reg (struct device *dev, char *buf, int nr) \ | |
583 | { \ | |
584 | struct w83627ehf_data *data = w83627ehf_update_device(dev); \ | |
585 | return sprintf(buf, "%d\n", \ | |
586 | LM75_TEMP_FROM_REG(data->reg[nr])); \ | |
587 | } | |
588 | show_temp_reg(temp); | |
589 | show_temp_reg(temp_max); | |
590 | show_temp_reg(temp_max_hyst); | |
591 | ||
592 | #define store_temp_reg(REG, reg) \ | |
593 | static ssize_t \ | |
594 | store_##reg (struct device *dev, const char *buf, size_t count, int nr) \ | |
595 | { \ | |
596 | struct i2c_client *client = to_i2c_client(dev); \ | |
597 | struct w83627ehf_data *data = i2c_get_clientdata(client); \ | |
598 | u32 val = simple_strtoul(buf, NULL, 10); \ | |
599 | \ | |
600 | down(&data->update_lock); \ | |
601 | data->reg[nr] = LM75_TEMP_TO_REG(val); \ | |
602 | w83627ehf_write_value(client, W83627EHF_REG_TEMP_##REG[nr], \ | |
603 | data->reg[nr]); \ | |
604 | up(&data->update_lock); \ | |
605 | return count; \ | |
606 | } | |
607 | store_temp_reg(OVER, temp_max); | |
608 | store_temp_reg(HYST, temp_max_hyst); | |
609 | ||
610 | #define sysfs_temp_offset(offset) \ | |
611 | static ssize_t \ | |
6f637a64 GKH |
612 | show_reg_temp##offset (struct device *dev, struct device_attribute *attr, \ |
613 | char *buf) \ | |
08e7e278 JD |
614 | { \ |
615 | return show_temp(dev, buf, offset - 2); \ | |
616 | } \ | |
617 | static DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ | |
618 | show_reg_temp##offset, NULL); | |
619 | ||
620 | #define sysfs_temp_reg_offset(reg, offset) \ | |
621 | static ssize_t \ | |
6f637a64 GKH |
622 | show_reg_temp##offset##_##reg(struct device *dev, struct device_attribute *attr, \ |
623 | char *buf) \ | |
08e7e278 JD |
624 | { \ |
625 | return show_temp_##reg(dev, buf, offset - 2); \ | |
626 | } \ | |
627 | static ssize_t \ | |
6f637a64 GKH |
628 | store_reg_temp##offset##_##reg(struct device *dev, struct device_attribute *attr, \ |
629 | const char *buf, size_t count) \ | |
08e7e278 JD |
630 | { \ |
631 | return store_temp_##reg(dev, buf, count, offset - 2); \ | |
632 | } \ | |
633 | static DEVICE_ATTR(temp##offset##_##reg, S_IRUGO| S_IWUSR, \ | |
634 | show_reg_temp##offset##_##reg, \ | |
635 | store_reg_temp##offset##_##reg); | |
636 | ||
637 | sysfs_temp_offset(2); | |
638 | sysfs_temp_reg_offset(max, 2); | |
639 | sysfs_temp_reg_offset(max_hyst, 2); | |
640 | sysfs_temp_offset(3); | |
641 | sysfs_temp_reg_offset(max, 3); | |
642 | sysfs_temp_reg_offset(max_hyst, 3); | |
643 | ||
644 | /* | |
645 | * Driver and client management | |
646 | */ | |
647 | ||
648 | static struct i2c_driver w83627ehf_driver; | |
649 | ||
650 | static void w83627ehf_init_client(struct i2c_client *client) | |
651 | { | |
652 | int i; | |
653 | u8 tmp; | |
654 | ||
655 | /* Start monitoring is needed */ | |
656 | tmp = w83627ehf_read_value(client, W83627EHF_REG_CONFIG); | |
657 | if (!(tmp & 0x01)) | |
658 | w83627ehf_write_value(client, W83627EHF_REG_CONFIG, | |
659 | tmp | 0x01); | |
660 | ||
661 | /* Enable temp2 and temp3 if needed */ | |
662 | for (i = 0; i < 2; i++) { | |
663 | tmp = w83627ehf_read_value(client, | |
664 | W83627EHF_REG_TEMP_CONFIG[i]); | |
665 | if (tmp & 0x01) | |
666 | w83627ehf_write_value(client, | |
667 | W83627EHF_REG_TEMP_CONFIG[i], | |
668 | tmp & 0xfe); | |
669 | } | |
670 | } | |
671 | ||
2d8672c5 | 672 | static int w83627ehf_detect(struct i2c_adapter *adapter) |
08e7e278 JD |
673 | { |
674 | struct i2c_client *client; | |
675 | struct w83627ehf_data *data; | |
676 | int i, err = 0; | |
677 | ||
ada0c2f8 PV |
678 | if (!request_region(address + REGION_OFFSET, REGION_LENGTH, |
679 | w83627ehf_driver.name)) { | |
08e7e278 JD |
680 | err = -EBUSY; |
681 | goto exit; | |
682 | } | |
683 | ||
684 | if (!(data = kmalloc(sizeof(struct w83627ehf_data), GFP_KERNEL))) { | |
685 | err = -ENOMEM; | |
686 | goto exit_release; | |
687 | } | |
688 | memset(data, 0, sizeof(struct w83627ehf_data)); | |
689 | ||
690 | client = &data->client; | |
691 | i2c_set_clientdata(client, data); | |
692 | client->addr = address; | |
693 | init_MUTEX(&data->lock); | |
694 | client->adapter = adapter; | |
695 | client->driver = &w83627ehf_driver; | |
696 | client->flags = 0; | |
697 | ||
698 | strlcpy(client->name, "w83627ehf", I2C_NAME_SIZE); | |
699 | data->valid = 0; | |
700 | init_MUTEX(&data->update_lock); | |
701 | ||
702 | /* Tell the i2c layer a new client has arrived */ | |
703 | if ((err = i2c_attach_client(client))) | |
704 | goto exit_free; | |
705 | ||
706 | /* Initialize the chip */ | |
707 | w83627ehf_init_client(client); | |
708 | ||
709 | /* A few vars need to be filled upon startup */ | |
710 | for (i = 0; i < 5; i++) | |
711 | data->fan_min[i] = w83627ehf_read_value(client, | |
712 | W83627EHF_REG_FAN_MIN[i]); | |
713 | ||
714 | /* It looks like fan4 and fan5 pins can be alternatively used | |
715 | as fan on/off switches */ | |
716 | data->has_fan = 0x07; /* fan1, fan2 and fan3 */ | |
717 | i = w83627ehf_read_value(client, W83627EHF_REG_FANDIV1); | |
718 | if (i & (1 << 2)) | |
719 | data->has_fan |= (1 << 3); | |
720 | if (i & (1 << 0)) | |
721 | data->has_fan |= (1 << 4); | |
722 | ||
723 | /* Register sysfs hooks */ | |
943b0830 MH |
724 | data->class_dev = hwmon_device_register(&client->dev); |
725 | if (IS_ERR(data->class_dev)) { | |
726 | err = PTR_ERR(data->class_dev); | |
727 | goto exit_detach; | |
728 | } | |
729 | ||
08e7e278 JD |
730 | device_create_file(&client->dev, &dev_attr_fan1_input); |
731 | device_create_file(&client->dev, &dev_attr_fan1_min); | |
732 | device_create_file(&client->dev, &dev_attr_fan1_div); | |
733 | device_create_file(&client->dev, &dev_attr_fan2_input); | |
734 | device_create_file(&client->dev, &dev_attr_fan2_min); | |
735 | device_create_file(&client->dev, &dev_attr_fan2_div); | |
736 | device_create_file(&client->dev, &dev_attr_fan3_input); | |
737 | device_create_file(&client->dev, &dev_attr_fan3_min); | |
738 | device_create_file(&client->dev, &dev_attr_fan3_div); | |
739 | ||
740 | if (data->has_fan & (1 << 3)) { | |
741 | device_create_file(&client->dev, &dev_attr_fan4_input); | |
742 | device_create_file(&client->dev, &dev_attr_fan4_min); | |
743 | device_create_file(&client->dev, &dev_attr_fan4_div); | |
744 | } | |
745 | if (data->has_fan & (1 << 4)) { | |
746 | device_create_file(&client->dev, &dev_attr_fan5_input); | |
747 | device_create_file(&client->dev, &dev_attr_fan5_min); | |
748 | device_create_file(&client->dev, &dev_attr_fan5_div); | |
749 | } | |
750 | ||
751 | device_create_file(&client->dev, &dev_attr_temp1_input); | |
752 | device_create_file(&client->dev, &dev_attr_temp1_max); | |
753 | device_create_file(&client->dev, &dev_attr_temp1_max_hyst); | |
754 | device_create_file(&client->dev, &dev_attr_temp2_input); | |
755 | device_create_file(&client->dev, &dev_attr_temp2_max); | |
756 | device_create_file(&client->dev, &dev_attr_temp2_max_hyst); | |
757 | device_create_file(&client->dev, &dev_attr_temp3_input); | |
758 | device_create_file(&client->dev, &dev_attr_temp3_max); | |
759 | device_create_file(&client->dev, &dev_attr_temp3_max_hyst); | |
760 | ||
761 | return 0; | |
762 | ||
943b0830 MH |
763 | exit_detach: |
764 | i2c_detach_client(client); | |
08e7e278 JD |
765 | exit_free: |
766 | kfree(data); | |
767 | exit_release: | |
ada0c2f8 | 768 | release_region(address + REGION_OFFSET, REGION_LENGTH); |
08e7e278 JD |
769 | exit: |
770 | return err; | |
771 | } | |
772 | ||
08e7e278 JD |
773 | static int w83627ehf_detach_client(struct i2c_client *client) |
774 | { | |
943b0830 | 775 | struct w83627ehf_data *data = i2c_get_clientdata(client); |
08e7e278 JD |
776 | int err; |
777 | ||
943b0830 MH |
778 | hwmon_device_unregister(data->class_dev); |
779 | ||
7bef5594 | 780 | if ((err = i2c_detach_client(client))) |
08e7e278 | 781 | return err; |
ada0c2f8 | 782 | release_region(client->addr + REGION_OFFSET, REGION_LENGTH); |
943b0830 | 783 | kfree(data); |
08e7e278 JD |
784 | |
785 | return 0; | |
786 | } | |
787 | ||
788 | static struct i2c_driver w83627ehf_driver = { | |
789 | .owner = THIS_MODULE, | |
790 | .name = "w83627ehf", | |
2d8672c5 | 791 | .attach_adapter = w83627ehf_detect, |
08e7e278 JD |
792 | .detach_client = w83627ehf_detach_client, |
793 | }; | |
794 | ||
2d8672c5 | 795 | static int __init w83627ehf_find(int sioaddr, unsigned short *addr) |
08e7e278 JD |
796 | { |
797 | u16 val; | |
798 | ||
799 | REG = sioaddr; | |
800 | VAL = sioaddr + 1; | |
801 | superio_enter(); | |
802 | ||
803 | val = (superio_inb(SIO_REG_DEVID) << 8) | |
804 | | superio_inb(SIO_REG_DEVID + 1); | |
805 | if ((val & SIO_ID_MASK) != SIO_W83627EHF_ID) { | |
806 | superio_exit(); | |
807 | return -ENODEV; | |
808 | } | |
809 | ||
810 | superio_select(W83627EHF_LD_HWM); | |
811 | val = (superio_inb(SIO_REG_ADDR) << 8) | |
812 | | superio_inb(SIO_REG_ADDR + 1); | |
ada0c2f8 | 813 | *addr = val & REGION_ALIGNMENT; |
2d8672c5 | 814 | if (*addr == 0) { |
08e7e278 JD |
815 | superio_exit(); |
816 | return -ENODEV; | |
817 | } | |
818 | ||
819 | /* Activate logical device if needed */ | |
820 | val = superio_inb(SIO_REG_ENABLE); | |
821 | if (!(val & 0x01)) | |
822 | superio_outb(SIO_REG_ENABLE, val | 0x01); | |
823 | ||
824 | superio_exit(); | |
825 | return 0; | |
826 | } | |
827 | ||
828 | static int __init sensors_w83627ehf_init(void) | |
829 | { | |
2d8672c5 JD |
830 | if (w83627ehf_find(0x2e, &address) |
831 | && w83627ehf_find(0x4e, &address)) | |
08e7e278 JD |
832 | return -ENODEV; |
833 | ||
fde09509 | 834 | return i2c_isa_add_driver(&w83627ehf_driver); |
08e7e278 JD |
835 | } |
836 | ||
837 | static void __exit sensors_w83627ehf_exit(void) | |
838 | { | |
fde09509 | 839 | i2c_isa_del_driver(&w83627ehf_driver); |
08e7e278 JD |
840 | } |
841 | ||
842 | MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>"); | |
843 | MODULE_DESCRIPTION("W83627EHF driver"); | |
844 | MODULE_LICENSE("GPL"); | |
845 | ||
846 | module_init(sensors_w83627ehf_init); | |
847 | module_exit(sensors_w83627ehf_exit); |