]>
Commit | Line | Data |
---|---|---|
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 | |
cf0676fe | 33 | w83627ehf 10 5 - 3 0x88 0x5ca3 |
08e7e278 JD |
34 | */ |
35 | ||
36 | #include <linux/module.h> | |
37 | #include <linux/init.h> | |
38 | #include <linux/slab.h> | |
39 | #include <linux/i2c.h> | |
fde09509 | 40 | #include <linux/i2c-isa.h> |
943b0830 | 41 | #include <linux/hwmon.h> |
412fec82 | 42 | #include <linux/hwmon-sysfs.h> |
943b0830 | 43 | #include <linux/err.h> |
9a61bf63 | 44 | #include <linux/mutex.h> |
08e7e278 JD |
45 | #include <asm/io.h> |
46 | #include "lm75.h" | |
47 | ||
2d8672c5 JD |
48 | /* The actual ISA address is read from Super-I/O configuration space */ |
49 | static unsigned short address; | |
08e7e278 JD |
50 | |
51 | /* | |
52 | * Super-I/O constants and functions | |
53 | */ | |
54 | ||
55 | static int REG; /* The register to read/write */ | |
56 | static int VAL; /* The value to read/write */ | |
57 | ||
58 | #define W83627EHF_LD_HWM 0x0b | |
59 | ||
60 | #define SIO_REG_LDSEL 0x07 /* Logical device select */ | |
61 | #define SIO_REG_DEVID 0x20 /* Device ID (2 bytes) */ | |
62 | #define SIO_REG_ENABLE 0x30 /* Logical device enable */ | |
63 | #define SIO_REG_ADDR 0x60 /* Logical device address (2 bytes) */ | |
64 | ||
65 | #define SIO_W83627EHF_ID 0x8840 | |
66 | #define SIO_ID_MASK 0xFFC0 | |
67 | ||
68 | static inline void | |
69 | superio_outb(int reg, int val) | |
70 | { | |
71 | outb(reg, REG); | |
72 | outb(val, VAL); | |
73 | } | |
74 | ||
75 | static inline int | |
76 | superio_inb(int reg) | |
77 | { | |
78 | outb(reg, REG); | |
79 | return inb(VAL); | |
80 | } | |
81 | ||
82 | static inline void | |
83 | superio_select(int ld) | |
84 | { | |
85 | outb(SIO_REG_LDSEL, REG); | |
86 | outb(ld, VAL); | |
87 | } | |
88 | ||
89 | static inline void | |
90 | superio_enter(void) | |
91 | { | |
92 | outb(0x87, REG); | |
93 | outb(0x87, REG); | |
94 | } | |
95 | ||
96 | static inline void | |
97 | superio_exit(void) | |
98 | { | |
99 | outb(0x02, REG); | |
100 | outb(0x02, VAL); | |
101 | } | |
102 | ||
103 | /* | |
104 | * ISA constants | |
105 | */ | |
106 | ||
ada0c2f8 PV |
107 | #define REGION_ALIGNMENT ~7 |
108 | #define REGION_OFFSET 5 | |
109 | #define REGION_LENGTH 2 | |
08e7e278 JD |
110 | #define ADDR_REG_OFFSET 5 |
111 | #define DATA_REG_OFFSET 6 | |
112 | ||
113 | #define W83627EHF_REG_BANK 0x4E | |
114 | #define W83627EHF_REG_CONFIG 0x40 | |
115 | #define W83627EHF_REG_CHIP_ID 0x49 | |
116 | #define W83627EHF_REG_MAN_ID 0x4F | |
117 | ||
118 | static const u16 W83627EHF_REG_FAN[] = { 0x28, 0x29, 0x2a, 0x3f, 0x553 }; | |
119 | static const u16 W83627EHF_REG_FAN_MIN[] = { 0x3b, 0x3c, 0x3d, 0x3e, 0x55c }; | |
120 | ||
cf0676fe RM |
121 | /* The W83627EHF registers for nr=7,8,9 are in bank 5 */ |
122 | #define W83627EHF_REG_IN_MAX(nr) ((nr < 7) ? (0x2b + (nr) * 2) : \ | |
123 | (0x554 + (((nr) - 7) * 2))) | |
124 | #define W83627EHF_REG_IN_MIN(nr) ((nr < 7) ? (0x2c + (nr) * 2) : \ | |
125 | (0x555 + (((nr) - 7) * 2))) | |
126 | #define W83627EHF_REG_IN(nr) ((nr < 7) ? (0x20 + (nr)) : \ | |
127 | (0x550 + (nr) - 7)) | |
128 | ||
08e7e278 JD |
129 | #define W83627EHF_REG_TEMP1 0x27 |
130 | #define W83627EHF_REG_TEMP1_HYST 0x3a | |
131 | #define W83627EHF_REG_TEMP1_OVER 0x39 | |
132 | static const u16 W83627EHF_REG_TEMP[] = { 0x150, 0x250 }; | |
133 | static const u16 W83627EHF_REG_TEMP_HYST[] = { 0x153, 0x253 }; | |
134 | static const u16 W83627EHF_REG_TEMP_OVER[] = { 0x155, 0x255 }; | |
135 | static const u16 W83627EHF_REG_TEMP_CONFIG[] = { 0x152, 0x252 }; | |
136 | ||
137 | /* Fan clock dividers are spread over the following five registers */ | |
138 | #define W83627EHF_REG_FANDIV1 0x47 | |
139 | #define W83627EHF_REG_FANDIV2 0x4B | |
140 | #define W83627EHF_REG_VBAT 0x5D | |
141 | #define W83627EHF_REG_DIODE 0x59 | |
142 | #define W83627EHF_REG_SMI_OVT 0x4C | |
143 | ||
144 | /* | |
145 | * Conversions | |
146 | */ | |
147 | ||
148 | static inline unsigned int | |
149 | fan_from_reg(u8 reg, unsigned int div) | |
150 | { | |
151 | if (reg == 0 || reg == 255) | |
152 | return 0; | |
153 | return 1350000U / (reg * div); | |
154 | } | |
155 | ||
156 | static inline unsigned int | |
157 | div_from_reg(u8 reg) | |
158 | { | |
159 | return 1 << reg; | |
160 | } | |
161 | ||
162 | static inline int | |
163 | temp1_from_reg(s8 reg) | |
164 | { | |
165 | return reg * 1000; | |
166 | } | |
167 | ||
168 | static inline s8 | |
169 | temp1_to_reg(int temp) | |
170 | { | |
171 | if (temp <= -128000) | |
172 | return -128; | |
173 | if (temp >= 127000) | |
174 | return 127; | |
175 | if (temp < 0) | |
176 | return (temp - 500) / 1000; | |
177 | return (temp + 500) / 1000; | |
178 | } | |
179 | ||
cf0676fe RM |
180 | /* Some of analog inputs have internal scaling (2x), 8mV is ADC LSB */ |
181 | ||
182 | static u8 scale_in[10] = { 8, 8, 16, 16, 8, 8, 8, 16, 16, 8 }; | |
183 | ||
184 | static inline long in_from_reg(u8 reg, u8 nr) | |
185 | { | |
186 | return reg * scale_in[nr]; | |
187 | } | |
188 | ||
189 | static inline u8 in_to_reg(u32 val, u8 nr) | |
190 | { | |
191 | return SENSORS_LIMIT(((val + (scale_in[nr] / 2)) / scale_in[nr]), 0, 255); | |
192 | } | |
193 | ||
08e7e278 JD |
194 | /* |
195 | * Data structures and manipulation thereof | |
196 | */ | |
197 | ||
198 | struct w83627ehf_data { | |
199 | struct i2c_client client; | |
943b0830 | 200 | struct class_device *class_dev; |
9a61bf63 | 201 | struct mutex lock; |
08e7e278 | 202 | |
9a61bf63 | 203 | struct mutex update_lock; |
08e7e278 JD |
204 | char valid; /* !=0 if following fields are valid */ |
205 | unsigned long last_updated; /* In jiffies */ | |
206 | ||
207 | /* Register values */ | |
cf0676fe RM |
208 | u8 in[10]; /* Register value */ |
209 | u8 in_max[10]; /* Register value */ | |
210 | u8 in_min[10]; /* Register value */ | |
08e7e278 JD |
211 | u8 fan[5]; |
212 | u8 fan_min[5]; | |
213 | u8 fan_div[5]; | |
214 | u8 has_fan; /* some fan inputs can be disabled */ | |
215 | s8 temp1; | |
216 | s8 temp1_max; | |
217 | s8 temp1_max_hyst; | |
218 | s16 temp[2]; | |
219 | s16 temp_max[2]; | |
220 | s16 temp_max_hyst[2]; | |
221 | }; | |
222 | ||
223 | static inline int is_word_sized(u16 reg) | |
224 | { | |
225 | return (((reg & 0xff00) == 0x100 | |
226 | || (reg & 0xff00) == 0x200) | |
227 | && ((reg & 0x00ff) == 0x50 | |
228 | || (reg & 0x00ff) == 0x53 | |
229 | || (reg & 0x00ff) == 0x55)); | |
230 | } | |
231 | ||
232 | /* We assume that the default bank is 0, thus the following two functions do | |
233 | nothing for registers which live in bank 0. For others, they respectively | |
234 | set the bank register to the correct value (before the register is | |
235 | accessed), and back to 0 (afterwards). */ | |
236 | static inline void w83627ehf_set_bank(struct i2c_client *client, u16 reg) | |
237 | { | |
238 | if (reg & 0xff00) { | |
239 | outb_p(W83627EHF_REG_BANK, client->addr + ADDR_REG_OFFSET); | |
240 | outb_p(reg >> 8, client->addr + DATA_REG_OFFSET); | |
241 | } | |
242 | } | |
243 | ||
244 | static inline void w83627ehf_reset_bank(struct i2c_client *client, u16 reg) | |
245 | { | |
246 | if (reg & 0xff00) { | |
247 | outb_p(W83627EHF_REG_BANK, client->addr + ADDR_REG_OFFSET); | |
248 | outb_p(0, client->addr + DATA_REG_OFFSET); | |
249 | } | |
250 | } | |
251 | ||
252 | static u16 w83627ehf_read_value(struct i2c_client *client, u16 reg) | |
253 | { | |
254 | struct w83627ehf_data *data = i2c_get_clientdata(client); | |
255 | int res, 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 | res = inb_p(client->addr + DATA_REG_OFFSET); | |
262 | if (word_sized) { | |
263 | outb_p((reg & 0xff) + 1, | |
264 | client->addr + ADDR_REG_OFFSET); | |
265 | res = (res << 8) + inb_p(client->addr + DATA_REG_OFFSET); | |
266 | } | |
267 | w83627ehf_reset_bank(client, reg); | |
268 | ||
9a61bf63 | 269 | mutex_unlock(&data->lock); |
08e7e278 JD |
270 | |
271 | return res; | |
272 | } | |
273 | ||
274 | static int w83627ehf_write_value(struct i2c_client *client, u16 reg, u16 value) | |
275 | { | |
276 | struct w83627ehf_data *data = i2c_get_clientdata(client); | |
277 | int word_sized = is_word_sized(reg); | |
278 | ||
9a61bf63 | 279 | mutex_lock(&data->lock); |
08e7e278 JD |
280 | |
281 | w83627ehf_set_bank(client, reg); | |
282 | outb_p(reg & 0xff, client->addr + ADDR_REG_OFFSET); | |
283 | if (word_sized) { | |
284 | outb_p(value >> 8, client->addr + DATA_REG_OFFSET); | |
285 | outb_p((reg & 0xff) + 1, | |
286 | client->addr + ADDR_REG_OFFSET); | |
287 | } | |
288 | outb_p(value & 0xff, client->addr + DATA_REG_OFFSET); | |
289 | w83627ehf_reset_bank(client, reg); | |
290 | ||
9a61bf63 | 291 | mutex_unlock(&data->lock); |
08e7e278 JD |
292 | return 0; |
293 | } | |
294 | ||
295 | /* This function assumes that the caller holds data->update_lock */ | |
296 | static void w83627ehf_write_fan_div(struct i2c_client *client, int nr) | |
297 | { | |
298 | struct w83627ehf_data *data = i2c_get_clientdata(client); | |
299 | u8 reg; | |
300 | ||
301 | switch (nr) { | |
302 | case 0: | |
303 | reg = (w83627ehf_read_value(client, W83627EHF_REG_FANDIV1) & 0xcf) | |
304 | | ((data->fan_div[0] & 0x03) << 4); | |
305 | w83627ehf_write_value(client, W83627EHF_REG_FANDIV1, reg); | |
306 | reg = (w83627ehf_read_value(client, W83627EHF_REG_VBAT) & 0xdf) | |
307 | | ((data->fan_div[0] & 0x04) << 3); | |
308 | w83627ehf_write_value(client, W83627EHF_REG_VBAT, reg); | |
309 | break; | |
310 | case 1: | |
311 | reg = (w83627ehf_read_value(client, W83627EHF_REG_FANDIV1) & 0x3f) | |
312 | | ((data->fan_div[1] & 0x03) << 6); | |
313 | w83627ehf_write_value(client, W83627EHF_REG_FANDIV1, reg); | |
314 | reg = (w83627ehf_read_value(client, W83627EHF_REG_VBAT) & 0xbf) | |
315 | | ((data->fan_div[1] & 0x04) << 4); | |
316 | w83627ehf_write_value(client, W83627EHF_REG_VBAT, reg); | |
317 | break; | |
318 | case 2: | |
319 | reg = (w83627ehf_read_value(client, W83627EHF_REG_FANDIV2) & 0x3f) | |
320 | | ((data->fan_div[2] & 0x03) << 6); | |
321 | w83627ehf_write_value(client, W83627EHF_REG_FANDIV2, reg); | |
322 | reg = (w83627ehf_read_value(client, W83627EHF_REG_VBAT) & 0x7f) | |
323 | | ((data->fan_div[2] & 0x04) << 5); | |
324 | w83627ehf_write_value(client, W83627EHF_REG_VBAT, reg); | |
325 | break; | |
326 | case 3: | |
327 | reg = (w83627ehf_read_value(client, W83627EHF_REG_DIODE) & 0xfc) | |
328 | | (data->fan_div[3] & 0x03); | |
329 | w83627ehf_write_value(client, W83627EHF_REG_DIODE, reg); | |
330 | reg = (w83627ehf_read_value(client, W83627EHF_REG_SMI_OVT) & 0x7f) | |
331 | | ((data->fan_div[3] & 0x04) << 5); | |
332 | w83627ehf_write_value(client, W83627EHF_REG_SMI_OVT, reg); | |
333 | break; | |
334 | case 4: | |
335 | reg = (w83627ehf_read_value(client, W83627EHF_REG_DIODE) & 0x73) | |
336 | | ((data->fan_div[4] & 0x03) << 3) | |
337 | | ((data->fan_div[4] & 0x04) << 5); | |
338 | w83627ehf_write_value(client, W83627EHF_REG_DIODE, reg); | |
339 | break; | |
340 | } | |
341 | } | |
342 | ||
343 | static struct w83627ehf_data *w83627ehf_update_device(struct device *dev) | |
344 | { | |
345 | struct i2c_client *client = to_i2c_client(dev); | |
346 | struct w83627ehf_data *data = i2c_get_clientdata(client); | |
347 | int i; | |
348 | ||
9a61bf63 | 349 | mutex_lock(&data->update_lock); |
08e7e278 JD |
350 | |
351 | if (time_after(jiffies, data->last_updated + HZ) | |
352 | || !data->valid) { | |
353 | /* Fan clock dividers */ | |
354 | i = w83627ehf_read_value(client, W83627EHF_REG_FANDIV1); | |
355 | data->fan_div[0] = (i >> 4) & 0x03; | |
356 | data->fan_div[1] = (i >> 6) & 0x03; | |
357 | i = w83627ehf_read_value(client, W83627EHF_REG_FANDIV2); | |
358 | data->fan_div[2] = (i >> 6) & 0x03; | |
359 | i = w83627ehf_read_value(client, W83627EHF_REG_VBAT); | |
360 | data->fan_div[0] |= (i >> 3) & 0x04; | |
361 | data->fan_div[1] |= (i >> 4) & 0x04; | |
362 | data->fan_div[2] |= (i >> 5) & 0x04; | |
363 | if (data->has_fan & ((1 << 3) | (1 << 4))) { | |
364 | i = w83627ehf_read_value(client, W83627EHF_REG_DIODE); | |
365 | data->fan_div[3] = i & 0x03; | |
366 | data->fan_div[4] = ((i >> 2) & 0x03) | |
367 | | ((i >> 5) & 0x04); | |
368 | } | |
369 | if (data->has_fan & (1 << 3)) { | |
370 | i = w83627ehf_read_value(client, W83627EHF_REG_SMI_OVT); | |
371 | data->fan_div[3] |= (i >> 5) & 0x04; | |
372 | } | |
373 | ||
cf0676fe RM |
374 | /* Measured voltages and limits */ |
375 | for (i = 0; i < 10; i++) { | |
376 | data->in[i] = w83627ehf_read_value(client, | |
377 | W83627EHF_REG_IN(i)); | |
378 | data->in_min[i] = w83627ehf_read_value(client, | |
379 | W83627EHF_REG_IN_MIN(i)); | |
380 | data->in_max[i] = w83627ehf_read_value(client, | |
381 | W83627EHF_REG_IN_MAX(i)); | |
382 | } | |
383 | ||
08e7e278 JD |
384 | /* Measured fan speeds and limits */ |
385 | for (i = 0; i < 5; i++) { | |
386 | if (!(data->has_fan & (1 << i))) | |
387 | continue; | |
388 | ||
389 | data->fan[i] = w83627ehf_read_value(client, | |
390 | W83627EHF_REG_FAN[i]); | |
391 | data->fan_min[i] = w83627ehf_read_value(client, | |
392 | W83627EHF_REG_FAN_MIN[i]); | |
393 | ||
394 | /* If we failed to measure the fan speed and clock | |
395 | divider can be increased, let's try that for next | |
396 | time */ | |
397 | if (data->fan[i] == 0xff | |
398 | && data->fan_div[i] < 0x07) { | |
399 | dev_dbg(&client->dev, "Increasing fan %d " | |
400 | "clock divider from %u to %u\n", | |
401 | i, div_from_reg(data->fan_div[i]), | |
402 | div_from_reg(data->fan_div[i] + 1)); | |
403 | data->fan_div[i]++; | |
404 | w83627ehf_write_fan_div(client, i); | |
405 | /* Preserve min limit if possible */ | |
406 | if (data->fan_min[i] >= 2 | |
407 | && data->fan_min[i] != 255) | |
408 | w83627ehf_write_value(client, | |
409 | W83627EHF_REG_FAN_MIN[i], | |
410 | (data->fan_min[i] /= 2)); | |
411 | } | |
412 | } | |
413 | ||
414 | /* Measured temperatures and limits */ | |
415 | data->temp1 = w83627ehf_read_value(client, | |
416 | W83627EHF_REG_TEMP1); | |
417 | data->temp1_max = w83627ehf_read_value(client, | |
418 | W83627EHF_REG_TEMP1_OVER); | |
419 | data->temp1_max_hyst = w83627ehf_read_value(client, | |
420 | W83627EHF_REG_TEMP1_HYST); | |
421 | for (i = 0; i < 2; i++) { | |
422 | data->temp[i] = w83627ehf_read_value(client, | |
423 | W83627EHF_REG_TEMP[i]); | |
424 | data->temp_max[i] = w83627ehf_read_value(client, | |
425 | W83627EHF_REG_TEMP_OVER[i]); | |
426 | data->temp_max_hyst[i] = w83627ehf_read_value(client, | |
427 | W83627EHF_REG_TEMP_HYST[i]); | |
428 | } | |
429 | ||
430 | data->last_updated = jiffies; | |
431 | data->valid = 1; | |
432 | } | |
433 | ||
9a61bf63 | 434 | mutex_unlock(&data->update_lock); |
08e7e278 JD |
435 | return data; |
436 | } | |
437 | ||
438 | /* | |
439 | * Sysfs callback functions | |
440 | */ | |
cf0676fe RM |
441 | #define show_in_reg(reg) \ |
442 | static ssize_t \ | |
443 | show_##reg(struct device *dev, struct device_attribute *attr, \ | |
444 | char *buf) \ | |
445 | { \ | |
446 | struct w83627ehf_data *data = w83627ehf_update_device(dev); \ | |
447 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \ | |
448 | int nr = sensor_attr->index; \ | |
449 | return sprintf(buf, "%ld\n", in_from_reg(data->reg[nr], nr)); \ | |
450 | } | |
451 | show_in_reg(in) | |
452 | show_in_reg(in_min) | |
453 | show_in_reg(in_max) | |
454 | ||
455 | #define store_in_reg(REG, reg) \ | |
456 | static ssize_t \ | |
457 | store_in_##reg (struct device *dev, struct device_attribute *attr, \ | |
458 | const char *buf, size_t count) \ | |
459 | { \ | |
460 | struct i2c_client *client = to_i2c_client(dev); \ | |
461 | struct w83627ehf_data *data = i2c_get_clientdata(client); \ | |
462 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \ | |
463 | int nr = sensor_attr->index; \ | |
464 | u32 val = simple_strtoul(buf, NULL, 10); \ | |
465 | \ | |
466 | mutex_lock(&data->update_lock); \ | |
467 | data->in_##reg[nr] = in_to_reg(val, nr); \ | |
468 | w83627ehf_write_value(client, W83627EHF_REG_IN_##REG(nr), \ | |
469 | data->in_##reg[nr]); \ | |
470 | mutex_unlock(&data->update_lock); \ | |
471 | return count; \ | |
472 | } | |
473 | ||
474 | store_in_reg(MIN, min) | |
475 | store_in_reg(MAX, max) | |
476 | ||
477 | static struct sensor_device_attribute sda_in_input[] = { | |
478 | SENSOR_ATTR(in0_input, S_IRUGO, show_in, NULL, 0), | |
479 | SENSOR_ATTR(in1_input, S_IRUGO, show_in, NULL, 1), | |
480 | SENSOR_ATTR(in2_input, S_IRUGO, show_in, NULL, 2), | |
481 | SENSOR_ATTR(in3_input, S_IRUGO, show_in, NULL, 3), | |
482 | SENSOR_ATTR(in4_input, S_IRUGO, show_in, NULL, 4), | |
483 | SENSOR_ATTR(in5_input, S_IRUGO, show_in, NULL, 5), | |
484 | SENSOR_ATTR(in6_input, S_IRUGO, show_in, NULL, 6), | |
485 | SENSOR_ATTR(in7_input, S_IRUGO, show_in, NULL, 7), | |
486 | SENSOR_ATTR(in8_input, S_IRUGO, show_in, NULL, 8), | |
487 | SENSOR_ATTR(in9_input, S_IRUGO, show_in, NULL, 9), | |
488 | }; | |
489 | ||
490 | static struct sensor_device_attribute sda_in_min[] = { | |
491 | SENSOR_ATTR(in0_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 0), | |
492 | SENSOR_ATTR(in1_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 1), | |
493 | SENSOR_ATTR(in2_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 2), | |
494 | SENSOR_ATTR(in3_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 3), | |
495 | SENSOR_ATTR(in4_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 4), | |
496 | SENSOR_ATTR(in5_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 5), | |
497 | SENSOR_ATTR(in6_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 6), | |
498 | SENSOR_ATTR(in7_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 7), | |
499 | SENSOR_ATTR(in8_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 8), | |
500 | SENSOR_ATTR(in9_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 9), | |
501 | }; | |
502 | ||
503 | static struct sensor_device_attribute sda_in_max[] = { | |
504 | SENSOR_ATTR(in0_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 0), | |
505 | SENSOR_ATTR(in1_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 1), | |
506 | SENSOR_ATTR(in2_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 2), | |
507 | SENSOR_ATTR(in3_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 3), | |
508 | SENSOR_ATTR(in4_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 4), | |
509 | SENSOR_ATTR(in5_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 5), | |
510 | SENSOR_ATTR(in6_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 6), | |
511 | SENSOR_ATTR(in7_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 7), | |
512 | SENSOR_ATTR(in8_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 8), | |
513 | SENSOR_ATTR(in9_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 9), | |
514 | }; | |
515 | ||
516 | static void device_create_file_in(struct device *dev, int i) | |
517 | { | |
518 | device_create_file(dev, &sda_in_input[i].dev_attr); | |
519 | device_create_file(dev, &sda_in_min[i].dev_attr); | |
520 | device_create_file(dev, &sda_in_max[i].dev_attr); | |
521 | } | |
08e7e278 JD |
522 | |
523 | #define show_fan_reg(reg) \ | |
524 | static ssize_t \ | |
412fec82 YM |
525 | show_##reg(struct device *dev, struct device_attribute *attr, \ |
526 | char *buf) \ | |
08e7e278 JD |
527 | { \ |
528 | struct w83627ehf_data *data = w83627ehf_update_device(dev); \ | |
412fec82 YM |
529 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \ |
530 | int nr = sensor_attr->index; \ | |
08e7e278 JD |
531 | return sprintf(buf, "%d\n", \ |
532 | fan_from_reg(data->reg[nr], \ | |
533 | div_from_reg(data->fan_div[nr]))); \ | |
534 | } | |
535 | show_fan_reg(fan); | |
536 | show_fan_reg(fan_min); | |
537 | ||
538 | static ssize_t | |
412fec82 YM |
539 | show_fan_div(struct device *dev, struct device_attribute *attr, |
540 | char *buf) | |
08e7e278 JD |
541 | { |
542 | struct w83627ehf_data *data = w83627ehf_update_device(dev); | |
412fec82 YM |
543 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
544 | int nr = sensor_attr->index; | |
545 | return sprintf(buf, "%u\n", div_from_reg(data->fan_div[nr])); | |
08e7e278 JD |
546 | } |
547 | ||
548 | static ssize_t | |
412fec82 YM |
549 | store_fan_min(struct device *dev, struct device_attribute *attr, |
550 | const char *buf, size_t count) | |
08e7e278 JD |
551 | { |
552 | struct i2c_client *client = to_i2c_client(dev); | |
553 | struct w83627ehf_data *data = i2c_get_clientdata(client); | |
412fec82 YM |
554 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
555 | int nr = sensor_attr->index; | |
08e7e278 JD |
556 | unsigned int val = simple_strtoul(buf, NULL, 10); |
557 | unsigned int reg; | |
558 | u8 new_div; | |
559 | ||
9a61bf63 | 560 | mutex_lock(&data->update_lock); |
08e7e278 JD |
561 | if (!val) { |
562 | /* No min limit, alarm disabled */ | |
563 | data->fan_min[nr] = 255; | |
564 | new_div = data->fan_div[nr]; /* No change */ | |
565 | dev_info(dev, "fan%u low limit and alarm disabled\n", nr + 1); | |
566 | } else if ((reg = 1350000U / val) >= 128 * 255) { | |
567 | /* Speed below this value cannot possibly be represented, | |
568 | even with the highest divider (128) */ | |
569 | data->fan_min[nr] = 254; | |
570 | new_div = 7; /* 128 == (1 << 7) */ | |
571 | dev_warn(dev, "fan%u low limit %u below minimum %u, set to " | |
572 | "minimum\n", nr + 1, val, fan_from_reg(254, 128)); | |
573 | } else if (!reg) { | |
574 | /* Speed above this value cannot possibly be represented, | |
575 | even with the lowest divider (1) */ | |
576 | data->fan_min[nr] = 1; | |
577 | new_div = 0; /* 1 == (1 << 0) */ | |
578 | dev_warn(dev, "fan%u low limit %u above maximum %u, set to " | |
b9110b1c | 579 | "maximum\n", nr + 1, val, fan_from_reg(1, 1)); |
08e7e278 JD |
580 | } else { |
581 | /* Automatically pick the best divider, i.e. the one such | |
582 | that the min limit will correspond to a register value | |
583 | in the 96..192 range */ | |
584 | new_div = 0; | |
585 | while (reg > 192 && new_div < 7) { | |
586 | reg >>= 1; | |
587 | new_div++; | |
588 | } | |
589 | data->fan_min[nr] = reg; | |
590 | } | |
591 | ||
592 | /* Write both the fan clock divider (if it changed) and the new | |
593 | fan min (unconditionally) */ | |
594 | if (new_div != data->fan_div[nr]) { | |
595 | if (new_div > data->fan_div[nr]) | |
596 | data->fan[nr] >>= (data->fan_div[nr] - new_div); | |
597 | else | |
598 | data->fan[nr] <<= (new_div - data->fan_div[nr]); | |
599 | ||
600 | dev_dbg(dev, "fan%u clock divider changed from %u to %u\n", | |
601 | nr + 1, div_from_reg(data->fan_div[nr]), | |
602 | div_from_reg(new_div)); | |
603 | data->fan_div[nr] = new_div; | |
604 | w83627ehf_write_fan_div(client, nr); | |
605 | } | |
606 | w83627ehf_write_value(client, W83627EHF_REG_FAN_MIN[nr], | |
607 | data->fan_min[nr]); | |
9a61bf63 | 608 | mutex_unlock(&data->update_lock); |
08e7e278 JD |
609 | |
610 | return count; | |
611 | } | |
612 | ||
412fec82 YM |
613 | static struct sensor_device_attribute sda_fan_input[] = { |
614 | SENSOR_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0), | |
615 | SENSOR_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1), | |
616 | SENSOR_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2), | |
617 | SENSOR_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3), | |
618 | SENSOR_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 4), | |
619 | }; | |
08e7e278 | 620 | |
412fec82 YM |
621 | static struct sensor_device_attribute sda_fan_min[] = { |
622 | SENSOR_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan_min, | |
623 | store_fan_min, 0), | |
624 | SENSOR_ATTR(fan2_min, S_IWUSR | S_IRUGO, show_fan_min, | |
625 | store_fan_min, 1), | |
626 | SENSOR_ATTR(fan3_min, S_IWUSR | S_IRUGO, show_fan_min, | |
627 | store_fan_min, 2), | |
628 | SENSOR_ATTR(fan4_min, S_IWUSR | S_IRUGO, show_fan_min, | |
629 | store_fan_min, 3), | |
630 | SENSOR_ATTR(fan5_min, S_IWUSR | S_IRUGO, show_fan_min, | |
631 | store_fan_min, 4), | |
632 | }; | |
08e7e278 | 633 | |
412fec82 YM |
634 | static struct sensor_device_attribute sda_fan_div[] = { |
635 | SENSOR_ATTR(fan1_div, S_IRUGO, show_fan_div, NULL, 0), | |
636 | SENSOR_ATTR(fan2_div, S_IRUGO, show_fan_div, NULL, 1), | |
637 | SENSOR_ATTR(fan3_div, S_IRUGO, show_fan_div, NULL, 2), | |
638 | SENSOR_ATTR(fan4_div, S_IRUGO, show_fan_div, NULL, 3), | |
639 | SENSOR_ATTR(fan5_div, S_IRUGO, show_fan_div, NULL, 4), | |
640 | }; | |
641 | ||
642 | static void device_create_file_fan(struct device *dev, int i) | |
643 | { | |
644 | device_create_file(dev, &sda_fan_input[i].dev_attr); | |
645 | device_create_file(dev, &sda_fan_div[i].dev_attr); | |
646 | device_create_file(dev, &sda_fan_min[i].dev_attr); | |
647 | } | |
08e7e278 JD |
648 | |
649 | #define show_temp1_reg(reg) \ | |
650 | static ssize_t \ | |
6f637a64 GKH |
651 | show_##reg(struct device *dev, struct device_attribute *attr, \ |
652 | char *buf) \ | |
08e7e278 JD |
653 | { \ |
654 | struct w83627ehf_data *data = w83627ehf_update_device(dev); \ | |
655 | return sprintf(buf, "%d\n", temp1_from_reg(data->reg)); \ | |
656 | } | |
657 | show_temp1_reg(temp1); | |
658 | show_temp1_reg(temp1_max); | |
659 | show_temp1_reg(temp1_max_hyst); | |
660 | ||
661 | #define store_temp1_reg(REG, reg) \ | |
662 | static ssize_t \ | |
6f637a64 GKH |
663 | store_temp1_##reg(struct device *dev, struct device_attribute *attr, \ |
664 | const char *buf, size_t count) \ | |
08e7e278 JD |
665 | { \ |
666 | struct i2c_client *client = to_i2c_client(dev); \ | |
667 | struct w83627ehf_data *data = i2c_get_clientdata(client); \ | |
668 | u32 val = simple_strtoul(buf, NULL, 10); \ | |
669 | \ | |
9a61bf63 | 670 | mutex_lock(&data->update_lock); \ |
08e7e278 JD |
671 | data->temp1_##reg = temp1_to_reg(val); \ |
672 | w83627ehf_write_value(client, W83627EHF_REG_TEMP1_##REG, \ | |
673 | data->temp1_##reg); \ | |
9a61bf63 | 674 | mutex_unlock(&data->update_lock); \ |
08e7e278 JD |
675 | return count; \ |
676 | } | |
677 | store_temp1_reg(OVER, max); | |
678 | store_temp1_reg(HYST, max_hyst); | |
679 | ||
08e7e278 JD |
680 | #define show_temp_reg(reg) \ |
681 | static ssize_t \ | |
412fec82 YM |
682 | show_##reg(struct device *dev, struct device_attribute *attr, \ |
683 | char *buf) \ | |
08e7e278 JD |
684 | { \ |
685 | struct w83627ehf_data *data = w83627ehf_update_device(dev); \ | |
412fec82 YM |
686 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \ |
687 | int nr = sensor_attr->index; \ | |
08e7e278 JD |
688 | return sprintf(buf, "%d\n", \ |
689 | LM75_TEMP_FROM_REG(data->reg[nr])); \ | |
690 | } | |
691 | show_temp_reg(temp); | |
692 | show_temp_reg(temp_max); | |
693 | show_temp_reg(temp_max_hyst); | |
694 | ||
695 | #define store_temp_reg(REG, reg) \ | |
696 | static ssize_t \ | |
412fec82 YM |
697 | store_##reg(struct device *dev, struct device_attribute *attr, \ |
698 | const char *buf, size_t count) \ | |
08e7e278 JD |
699 | { \ |
700 | struct i2c_client *client = to_i2c_client(dev); \ | |
701 | struct w83627ehf_data *data = i2c_get_clientdata(client); \ | |
412fec82 YM |
702 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \ |
703 | int nr = sensor_attr->index; \ | |
08e7e278 JD |
704 | u32 val = simple_strtoul(buf, NULL, 10); \ |
705 | \ | |
9a61bf63 | 706 | mutex_lock(&data->update_lock); \ |
08e7e278 JD |
707 | data->reg[nr] = LM75_TEMP_TO_REG(val); \ |
708 | w83627ehf_write_value(client, W83627EHF_REG_TEMP_##REG[nr], \ | |
709 | data->reg[nr]); \ | |
9a61bf63 | 710 | mutex_unlock(&data->update_lock); \ |
08e7e278 JD |
711 | return count; \ |
712 | } | |
713 | store_temp_reg(OVER, temp_max); | |
714 | store_temp_reg(HYST, temp_max_hyst); | |
715 | ||
412fec82 YM |
716 | static struct sensor_device_attribute sda_temp[] = { |
717 | SENSOR_ATTR(temp1_input, S_IRUGO, show_temp1, NULL, 0), | |
718 | SENSOR_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 0), | |
719 | SENSOR_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 1), | |
720 | SENSOR_ATTR(temp1_max, S_IRUGO | S_IWUSR, show_temp1_max, | |
721 | store_temp1_max, 0), | |
722 | SENSOR_ATTR(temp2_max, S_IRUGO | S_IWUSR, show_temp_max, | |
723 | store_temp_max, 0), | |
724 | SENSOR_ATTR(temp3_max, S_IRUGO | S_IWUSR, show_temp_max, | |
725 | store_temp_max, 1), | |
726 | SENSOR_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, show_temp1_max_hyst, | |
727 | store_temp1_max_hyst, 0), | |
728 | SENSOR_ATTR(temp2_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst, | |
729 | store_temp_max_hyst, 0), | |
730 | SENSOR_ATTR(temp3_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst, | |
731 | store_temp_max_hyst, 1), | |
732 | }; | |
08e7e278 JD |
733 | |
734 | /* | |
735 | * Driver and client management | |
736 | */ | |
737 | ||
738 | static struct i2c_driver w83627ehf_driver; | |
739 | ||
740 | static void w83627ehf_init_client(struct i2c_client *client) | |
741 | { | |
742 | int i; | |
743 | u8 tmp; | |
744 | ||
745 | /* Start monitoring is needed */ | |
746 | tmp = w83627ehf_read_value(client, W83627EHF_REG_CONFIG); | |
747 | if (!(tmp & 0x01)) | |
748 | w83627ehf_write_value(client, W83627EHF_REG_CONFIG, | |
749 | tmp | 0x01); | |
750 | ||
751 | /* Enable temp2 and temp3 if needed */ | |
752 | for (i = 0; i < 2; i++) { | |
753 | tmp = w83627ehf_read_value(client, | |
754 | W83627EHF_REG_TEMP_CONFIG[i]); | |
755 | if (tmp & 0x01) | |
756 | w83627ehf_write_value(client, | |
757 | W83627EHF_REG_TEMP_CONFIG[i], | |
758 | tmp & 0xfe); | |
759 | } | |
760 | } | |
761 | ||
2d8672c5 | 762 | static int w83627ehf_detect(struct i2c_adapter *adapter) |
08e7e278 JD |
763 | { |
764 | struct i2c_client *client; | |
765 | struct w83627ehf_data *data; | |
412fec82 | 766 | struct device *dev; |
08e7e278 JD |
767 | int i, err = 0; |
768 | ||
ada0c2f8 | 769 | if (!request_region(address + REGION_OFFSET, REGION_LENGTH, |
cdaf7934 | 770 | w83627ehf_driver.driver.name)) { |
08e7e278 JD |
771 | err = -EBUSY; |
772 | goto exit; | |
773 | } | |
774 | ||
ba9c2e8d | 775 | if (!(data = kzalloc(sizeof(struct w83627ehf_data), GFP_KERNEL))) { |
08e7e278 JD |
776 | err = -ENOMEM; |
777 | goto exit_release; | |
778 | } | |
08e7e278 JD |
779 | |
780 | client = &data->client; | |
781 | i2c_set_clientdata(client, data); | |
782 | client->addr = address; | |
9a61bf63 | 783 | mutex_init(&data->lock); |
08e7e278 JD |
784 | client->adapter = adapter; |
785 | client->driver = &w83627ehf_driver; | |
786 | client->flags = 0; | |
412fec82 | 787 | dev = &client->dev; |
08e7e278 JD |
788 | |
789 | strlcpy(client->name, "w83627ehf", I2C_NAME_SIZE); | |
790 | data->valid = 0; | |
9a61bf63 | 791 | mutex_init(&data->update_lock); |
08e7e278 JD |
792 | |
793 | /* Tell the i2c layer a new client has arrived */ | |
794 | if ((err = i2c_attach_client(client))) | |
795 | goto exit_free; | |
796 | ||
797 | /* Initialize the chip */ | |
798 | w83627ehf_init_client(client); | |
799 | ||
800 | /* A few vars need to be filled upon startup */ | |
801 | for (i = 0; i < 5; i++) | |
802 | data->fan_min[i] = w83627ehf_read_value(client, | |
803 | W83627EHF_REG_FAN_MIN[i]); | |
804 | ||
805 | /* It looks like fan4 and fan5 pins can be alternatively used | |
806 | as fan on/off switches */ | |
807 | data->has_fan = 0x07; /* fan1, fan2 and fan3 */ | |
808 | i = w83627ehf_read_value(client, W83627EHF_REG_FANDIV1); | |
809 | if (i & (1 << 2)) | |
810 | data->has_fan |= (1 << 3); | |
811 | if (i & (1 << 0)) | |
812 | data->has_fan |= (1 << 4); | |
813 | ||
814 | /* Register sysfs hooks */ | |
412fec82 | 815 | data->class_dev = hwmon_device_register(dev); |
943b0830 MH |
816 | if (IS_ERR(data->class_dev)) { |
817 | err = PTR_ERR(data->class_dev); | |
818 | goto exit_detach; | |
819 | } | |
820 | ||
cf0676fe RM |
821 | for (i = 0; i < 10; i++) |
822 | device_create_file_in(dev, i); | |
823 | ||
412fec82 YM |
824 | for (i = 0; i < 5; i++) { |
825 | if (data->has_fan & (1 << i)) | |
826 | device_create_file_fan(dev, i); | |
08e7e278 | 827 | } |
412fec82 YM |
828 | for (i = 0; i < ARRAY_SIZE(sda_temp); i++) |
829 | device_create_file(dev, &sda_temp[i].dev_attr); | |
08e7e278 JD |
830 | |
831 | return 0; | |
832 | ||
943b0830 MH |
833 | exit_detach: |
834 | i2c_detach_client(client); | |
08e7e278 JD |
835 | exit_free: |
836 | kfree(data); | |
837 | exit_release: | |
ada0c2f8 | 838 | release_region(address + REGION_OFFSET, REGION_LENGTH); |
08e7e278 JD |
839 | exit: |
840 | return err; | |
841 | } | |
842 | ||
08e7e278 JD |
843 | static int w83627ehf_detach_client(struct i2c_client *client) |
844 | { | |
943b0830 | 845 | struct w83627ehf_data *data = i2c_get_clientdata(client); |
08e7e278 JD |
846 | int err; |
847 | ||
943b0830 MH |
848 | hwmon_device_unregister(data->class_dev); |
849 | ||
7bef5594 | 850 | if ((err = i2c_detach_client(client))) |
08e7e278 | 851 | return err; |
ada0c2f8 | 852 | release_region(client->addr + REGION_OFFSET, REGION_LENGTH); |
943b0830 | 853 | kfree(data); |
08e7e278 JD |
854 | |
855 | return 0; | |
856 | } | |
857 | ||
858 | static struct i2c_driver w83627ehf_driver = { | |
cdaf7934 | 859 | .driver = { |
cdaf7934 LR |
860 | .name = "w83627ehf", |
861 | }, | |
2d8672c5 | 862 | .attach_adapter = w83627ehf_detect, |
08e7e278 JD |
863 | .detach_client = w83627ehf_detach_client, |
864 | }; | |
865 | ||
2d8672c5 | 866 | static int __init w83627ehf_find(int sioaddr, unsigned short *addr) |
08e7e278 JD |
867 | { |
868 | u16 val; | |
869 | ||
870 | REG = sioaddr; | |
871 | VAL = sioaddr + 1; | |
872 | superio_enter(); | |
873 | ||
874 | val = (superio_inb(SIO_REG_DEVID) << 8) | |
875 | | superio_inb(SIO_REG_DEVID + 1); | |
876 | if ((val & SIO_ID_MASK) != SIO_W83627EHF_ID) { | |
877 | superio_exit(); | |
878 | return -ENODEV; | |
879 | } | |
880 | ||
881 | superio_select(W83627EHF_LD_HWM); | |
882 | val = (superio_inb(SIO_REG_ADDR) << 8) | |
883 | | superio_inb(SIO_REG_ADDR + 1); | |
ada0c2f8 | 884 | *addr = val & REGION_ALIGNMENT; |
2d8672c5 | 885 | if (*addr == 0) { |
08e7e278 JD |
886 | superio_exit(); |
887 | return -ENODEV; | |
888 | } | |
889 | ||
890 | /* Activate logical device if needed */ | |
891 | val = superio_inb(SIO_REG_ENABLE); | |
892 | if (!(val & 0x01)) | |
893 | superio_outb(SIO_REG_ENABLE, val | 0x01); | |
894 | ||
895 | superio_exit(); | |
896 | return 0; | |
897 | } | |
898 | ||
899 | static int __init sensors_w83627ehf_init(void) | |
900 | { | |
2d8672c5 JD |
901 | if (w83627ehf_find(0x2e, &address) |
902 | && w83627ehf_find(0x4e, &address)) | |
08e7e278 JD |
903 | return -ENODEV; |
904 | ||
fde09509 | 905 | return i2c_isa_add_driver(&w83627ehf_driver); |
08e7e278 JD |
906 | } |
907 | ||
908 | static void __exit sensors_w83627ehf_exit(void) | |
909 | { | |
fde09509 | 910 | i2c_isa_del_driver(&w83627ehf_driver); |
08e7e278 JD |
911 | } |
912 | ||
913 | MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>"); | |
914 | MODULE_DESCRIPTION("W83627EHF driver"); | |
915 | MODULE_LICENSE("GPL"); | |
916 | ||
917 | module_init(sensors_w83627ehf_init); | |
918 | module_exit(sensors_w83627ehf_exit); |