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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 | |
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 | ||
a4589dbb JD |
144 | #define W83627EHF_REG_ALARM1 0x459 |
145 | #define W83627EHF_REG_ALARM2 0x45A | |
146 | #define W83627EHF_REG_ALARM3 0x45B | |
147 | ||
08e7e278 JD |
148 | /* |
149 | * Conversions | |
150 | */ | |
151 | ||
152 | static inline unsigned int | |
153 | fan_from_reg(u8 reg, unsigned int div) | |
154 | { | |
155 | if (reg == 0 || reg == 255) | |
156 | return 0; | |
157 | return 1350000U / (reg * div); | |
158 | } | |
159 | ||
160 | static inline unsigned int | |
161 | div_from_reg(u8 reg) | |
162 | { | |
163 | return 1 << reg; | |
164 | } | |
165 | ||
166 | static inline int | |
167 | temp1_from_reg(s8 reg) | |
168 | { | |
169 | return reg * 1000; | |
170 | } | |
171 | ||
172 | static inline s8 | |
173 | temp1_to_reg(int temp) | |
174 | { | |
175 | if (temp <= -128000) | |
176 | return -128; | |
177 | if (temp >= 127000) | |
178 | return 127; | |
179 | if (temp < 0) | |
180 | return (temp - 500) / 1000; | |
181 | return (temp + 500) / 1000; | |
182 | } | |
183 | ||
cf0676fe RM |
184 | /* Some of analog inputs have internal scaling (2x), 8mV is ADC LSB */ |
185 | ||
186 | static u8 scale_in[10] = { 8, 8, 16, 16, 8, 8, 8, 16, 16, 8 }; | |
187 | ||
188 | static inline long in_from_reg(u8 reg, u8 nr) | |
189 | { | |
190 | return reg * scale_in[nr]; | |
191 | } | |
192 | ||
193 | static inline u8 in_to_reg(u32 val, u8 nr) | |
194 | { | |
195 | return SENSORS_LIMIT(((val + (scale_in[nr] / 2)) / scale_in[nr]), 0, 255); | |
196 | } | |
197 | ||
08e7e278 JD |
198 | /* |
199 | * Data structures and manipulation thereof | |
200 | */ | |
201 | ||
202 | struct w83627ehf_data { | |
203 | struct i2c_client client; | |
943b0830 | 204 | struct class_device *class_dev; |
9a61bf63 | 205 | struct mutex lock; |
08e7e278 | 206 | |
9a61bf63 | 207 | struct mutex update_lock; |
08e7e278 JD |
208 | char valid; /* !=0 if following fields are valid */ |
209 | unsigned long last_updated; /* In jiffies */ | |
210 | ||
211 | /* Register values */ | |
cf0676fe RM |
212 | u8 in[10]; /* Register value */ |
213 | u8 in_max[10]; /* Register value */ | |
214 | u8 in_min[10]; /* Register value */ | |
08e7e278 JD |
215 | u8 fan[5]; |
216 | u8 fan_min[5]; | |
217 | u8 fan_div[5]; | |
218 | u8 has_fan; /* some fan inputs can be disabled */ | |
219 | s8 temp1; | |
220 | s8 temp1_max; | |
221 | s8 temp1_max_hyst; | |
222 | s16 temp[2]; | |
223 | s16 temp_max[2]; | |
224 | s16 temp_max_hyst[2]; | |
a4589dbb | 225 | u32 alarms; |
08e7e278 JD |
226 | }; |
227 | ||
228 | static inline int is_word_sized(u16 reg) | |
229 | { | |
230 | return (((reg & 0xff00) == 0x100 | |
231 | || (reg & 0xff00) == 0x200) | |
232 | && ((reg & 0x00ff) == 0x50 | |
233 | || (reg & 0x00ff) == 0x53 | |
234 | || (reg & 0x00ff) == 0x55)); | |
235 | } | |
236 | ||
237 | /* We assume that the default bank is 0, thus the following two functions do | |
238 | nothing for registers which live in bank 0. For others, they respectively | |
239 | set the bank register to the correct value (before the register is | |
240 | accessed), and back to 0 (afterwards). */ | |
241 | static inline void w83627ehf_set_bank(struct i2c_client *client, u16 reg) | |
242 | { | |
243 | if (reg & 0xff00) { | |
244 | outb_p(W83627EHF_REG_BANK, client->addr + ADDR_REG_OFFSET); | |
245 | outb_p(reg >> 8, client->addr + DATA_REG_OFFSET); | |
246 | } | |
247 | } | |
248 | ||
249 | static inline void w83627ehf_reset_bank(struct i2c_client *client, u16 reg) | |
250 | { | |
251 | if (reg & 0xff00) { | |
252 | outb_p(W83627EHF_REG_BANK, client->addr + ADDR_REG_OFFSET); | |
253 | outb_p(0, client->addr + DATA_REG_OFFSET); | |
254 | } | |
255 | } | |
256 | ||
257 | static u16 w83627ehf_read_value(struct i2c_client *client, u16 reg) | |
258 | { | |
259 | struct w83627ehf_data *data = i2c_get_clientdata(client); | |
260 | int res, word_sized = is_word_sized(reg); | |
261 | ||
9a61bf63 | 262 | mutex_lock(&data->lock); |
08e7e278 JD |
263 | |
264 | w83627ehf_set_bank(client, reg); | |
265 | outb_p(reg & 0xff, client->addr + ADDR_REG_OFFSET); | |
266 | res = inb_p(client->addr + DATA_REG_OFFSET); | |
267 | if (word_sized) { | |
268 | outb_p((reg & 0xff) + 1, | |
269 | client->addr + ADDR_REG_OFFSET); | |
270 | res = (res << 8) + inb_p(client->addr + DATA_REG_OFFSET); | |
271 | } | |
272 | w83627ehf_reset_bank(client, reg); | |
273 | ||
9a61bf63 | 274 | mutex_unlock(&data->lock); |
08e7e278 JD |
275 | |
276 | return res; | |
277 | } | |
278 | ||
279 | static int w83627ehf_write_value(struct i2c_client *client, u16 reg, u16 value) | |
280 | { | |
281 | struct w83627ehf_data *data = i2c_get_clientdata(client); | |
282 | int word_sized = is_word_sized(reg); | |
283 | ||
9a61bf63 | 284 | mutex_lock(&data->lock); |
08e7e278 JD |
285 | |
286 | w83627ehf_set_bank(client, reg); | |
287 | outb_p(reg & 0xff, client->addr + ADDR_REG_OFFSET); | |
288 | if (word_sized) { | |
289 | outb_p(value >> 8, client->addr + DATA_REG_OFFSET); | |
290 | outb_p((reg & 0xff) + 1, | |
291 | client->addr + ADDR_REG_OFFSET); | |
292 | } | |
293 | outb_p(value & 0xff, client->addr + DATA_REG_OFFSET); | |
294 | w83627ehf_reset_bank(client, reg); | |
295 | ||
9a61bf63 | 296 | mutex_unlock(&data->lock); |
08e7e278 JD |
297 | return 0; |
298 | } | |
299 | ||
300 | /* This function assumes that the caller holds data->update_lock */ | |
301 | static void w83627ehf_write_fan_div(struct i2c_client *client, int nr) | |
302 | { | |
303 | struct w83627ehf_data *data = i2c_get_clientdata(client); | |
304 | u8 reg; | |
305 | ||
306 | switch (nr) { | |
307 | case 0: | |
308 | reg = (w83627ehf_read_value(client, W83627EHF_REG_FANDIV1) & 0xcf) | |
309 | | ((data->fan_div[0] & 0x03) << 4); | |
310 | w83627ehf_write_value(client, W83627EHF_REG_FANDIV1, reg); | |
311 | reg = (w83627ehf_read_value(client, W83627EHF_REG_VBAT) & 0xdf) | |
312 | | ((data->fan_div[0] & 0x04) << 3); | |
313 | w83627ehf_write_value(client, W83627EHF_REG_VBAT, reg); | |
314 | break; | |
315 | case 1: | |
316 | reg = (w83627ehf_read_value(client, W83627EHF_REG_FANDIV1) & 0x3f) | |
317 | | ((data->fan_div[1] & 0x03) << 6); | |
318 | w83627ehf_write_value(client, W83627EHF_REG_FANDIV1, reg); | |
319 | reg = (w83627ehf_read_value(client, W83627EHF_REG_VBAT) & 0xbf) | |
320 | | ((data->fan_div[1] & 0x04) << 4); | |
321 | w83627ehf_write_value(client, W83627EHF_REG_VBAT, reg); | |
322 | break; | |
323 | case 2: | |
324 | reg = (w83627ehf_read_value(client, W83627EHF_REG_FANDIV2) & 0x3f) | |
325 | | ((data->fan_div[2] & 0x03) << 6); | |
326 | w83627ehf_write_value(client, W83627EHF_REG_FANDIV2, reg); | |
327 | reg = (w83627ehf_read_value(client, W83627EHF_REG_VBAT) & 0x7f) | |
328 | | ((data->fan_div[2] & 0x04) << 5); | |
329 | w83627ehf_write_value(client, W83627EHF_REG_VBAT, reg); | |
330 | break; | |
331 | case 3: | |
332 | reg = (w83627ehf_read_value(client, W83627EHF_REG_DIODE) & 0xfc) | |
333 | | (data->fan_div[3] & 0x03); | |
334 | w83627ehf_write_value(client, W83627EHF_REG_DIODE, reg); | |
335 | reg = (w83627ehf_read_value(client, W83627EHF_REG_SMI_OVT) & 0x7f) | |
336 | | ((data->fan_div[3] & 0x04) << 5); | |
337 | w83627ehf_write_value(client, W83627EHF_REG_SMI_OVT, reg); | |
338 | break; | |
339 | case 4: | |
340 | reg = (w83627ehf_read_value(client, W83627EHF_REG_DIODE) & 0x73) | |
341 | | ((data->fan_div[4] & 0x03) << 3) | |
342 | | ((data->fan_div[4] & 0x04) << 5); | |
343 | w83627ehf_write_value(client, W83627EHF_REG_DIODE, reg); | |
344 | break; | |
345 | } | |
346 | } | |
347 | ||
348 | static struct w83627ehf_data *w83627ehf_update_device(struct device *dev) | |
349 | { | |
350 | struct i2c_client *client = to_i2c_client(dev); | |
351 | struct w83627ehf_data *data = i2c_get_clientdata(client); | |
352 | int i; | |
353 | ||
9a61bf63 | 354 | mutex_lock(&data->update_lock); |
08e7e278 JD |
355 | |
356 | if (time_after(jiffies, data->last_updated + HZ) | |
357 | || !data->valid) { | |
358 | /* Fan clock dividers */ | |
359 | i = w83627ehf_read_value(client, W83627EHF_REG_FANDIV1); | |
360 | data->fan_div[0] = (i >> 4) & 0x03; | |
361 | data->fan_div[1] = (i >> 6) & 0x03; | |
362 | i = w83627ehf_read_value(client, W83627EHF_REG_FANDIV2); | |
363 | data->fan_div[2] = (i >> 6) & 0x03; | |
364 | i = w83627ehf_read_value(client, W83627EHF_REG_VBAT); | |
365 | data->fan_div[0] |= (i >> 3) & 0x04; | |
366 | data->fan_div[1] |= (i >> 4) & 0x04; | |
367 | data->fan_div[2] |= (i >> 5) & 0x04; | |
368 | if (data->has_fan & ((1 << 3) | (1 << 4))) { | |
369 | i = w83627ehf_read_value(client, W83627EHF_REG_DIODE); | |
370 | data->fan_div[3] = i & 0x03; | |
371 | data->fan_div[4] = ((i >> 2) & 0x03) | |
372 | | ((i >> 5) & 0x04); | |
373 | } | |
374 | if (data->has_fan & (1 << 3)) { | |
375 | i = w83627ehf_read_value(client, W83627EHF_REG_SMI_OVT); | |
376 | data->fan_div[3] |= (i >> 5) & 0x04; | |
377 | } | |
378 | ||
cf0676fe RM |
379 | /* Measured voltages and limits */ |
380 | for (i = 0; i < 10; i++) { | |
381 | data->in[i] = w83627ehf_read_value(client, | |
382 | W83627EHF_REG_IN(i)); | |
383 | data->in_min[i] = w83627ehf_read_value(client, | |
384 | W83627EHF_REG_IN_MIN(i)); | |
385 | data->in_max[i] = w83627ehf_read_value(client, | |
386 | W83627EHF_REG_IN_MAX(i)); | |
387 | } | |
388 | ||
08e7e278 JD |
389 | /* Measured fan speeds and limits */ |
390 | for (i = 0; i < 5; i++) { | |
391 | if (!(data->has_fan & (1 << i))) | |
392 | continue; | |
393 | ||
394 | data->fan[i] = w83627ehf_read_value(client, | |
395 | W83627EHF_REG_FAN[i]); | |
396 | data->fan_min[i] = w83627ehf_read_value(client, | |
397 | W83627EHF_REG_FAN_MIN[i]); | |
398 | ||
399 | /* If we failed to measure the fan speed and clock | |
400 | divider can be increased, let's try that for next | |
401 | time */ | |
402 | if (data->fan[i] == 0xff | |
403 | && data->fan_div[i] < 0x07) { | |
404 | dev_dbg(&client->dev, "Increasing fan %d " | |
405 | "clock divider from %u to %u\n", | |
406 | i, div_from_reg(data->fan_div[i]), | |
407 | div_from_reg(data->fan_div[i] + 1)); | |
408 | data->fan_div[i]++; | |
409 | w83627ehf_write_fan_div(client, i); | |
410 | /* Preserve min limit if possible */ | |
411 | if (data->fan_min[i] >= 2 | |
412 | && data->fan_min[i] != 255) | |
413 | w83627ehf_write_value(client, | |
414 | W83627EHF_REG_FAN_MIN[i], | |
415 | (data->fan_min[i] /= 2)); | |
416 | } | |
417 | } | |
418 | ||
419 | /* Measured temperatures and limits */ | |
420 | data->temp1 = w83627ehf_read_value(client, | |
421 | W83627EHF_REG_TEMP1); | |
422 | data->temp1_max = w83627ehf_read_value(client, | |
423 | W83627EHF_REG_TEMP1_OVER); | |
424 | data->temp1_max_hyst = w83627ehf_read_value(client, | |
425 | W83627EHF_REG_TEMP1_HYST); | |
426 | for (i = 0; i < 2; i++) { | |
427 | data->temp[i] = w83627ehf_read_value(client, | |
428 | W83627EHF_REG_TEMP[i]); | |
429 | data->temp_max[i] = w83627ehf_read_value(client, | |
430 | W83627EHF_REG_TEMP_OVER[i]); | |
431 | data->temp_max_hyst[i] = w83627ehf_read_value(client, | |
432 | W83627EHF_REG_TEMP_HYST[i]); | |
433 | } | |
434 | ||
a4589dbb JD |
435 | data->alarms = w83627ehf_read_value(client, |
436 | W83627EHF_REG_ALARM1) | | |
437 | (w83627ehf_read_value(client, | |
438 | W83627EHF_REG_ALARM2) << 8) | | |
439 | (w83627ehf_read_value(client, | |
440 | W83627EHF_REG_ALARM3) << 16); | |
441 | ||
08e7e278 JD |
442 | data->last_updated = jiffies; |
443 | data->valid = 1; | |
444 | } | |
445 | ||
9a61bf63 | 446 | mutex_unlock(&data->update_lock); |
08e7e278 JD |
447 | return data; |
448 | } | |
449 | ||
450 | /* | |
451 | * Sysfs callback functions | |
452 | */ | |
cf0676fe RM |
453 | #define show_in_reg(reg) \ |
454 | static ssize_t \ | |
455 | show_##reg(struct device *dev, struct device_attribute *attr, \ | |
456 | char *buf) \ | |
457 | { \ | |
458 | struct w83627ehf_data *data = w83627ehf_update_device(dev); \ | |
459 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \ | |
460 | int nr = sensor_attr->index; \ | |
461 | return sprintf(buf, "%ld\n", in_from_reg(data->reg[nr], nr)); \ | |
462 | } | |
463 | show_in_reg(in) | |
464 | show_in_reg(in_min) | |
465 | show_in_reg(in_max) | |
466 | ||
467 | #define store_in_reg(REG, reg) \ | |
468 | static ssize_t \ | |
469 | store_in_##reg (struct device *dev, struct device_attribute *attr, \ | |
470 | const char *buf, size_t count) \ | |
471 | { \ | |
472 | struct i2c_client *client = to_i2c_client(dev); \ | |
473 | struct w83627ehf_data *data = i2c_get_clientdata(client); \ | |
474 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \ | |
475 | int nr = sensor_attr->index; \ | |
476 | u32 val = simple_strtoul(buf, NULL, 10); \ | |
477 | \ | |
478 | mutex_lock(&data->update_lock); \ | |
479 | data->in_##reg[nr] = in_to_reg(val, nr); \ | |
480 | w83627ehf_write_value(client, W83627EHF_REG_IN_##REG(nr), \ | |
481 | data->in_##reg[nr]); \ | |
482 | mutex_unlock(&data->update_lock); \ | |
483 | return count; \ | |
484 | } | |
485 | ||
486 | store_in_reg(MIN, min) | |
487 | store_in_reg(MAX, max) | |
488 | ||
a4589dbb JD |
489 | static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, char *buf) |
490 | { | |
491 | struct w83627ehf_data *data = w83627ehf_update_device(dev); | |
492 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
493 | int nr = sensor_attr->index; | |
494 | return sprintf(buf, "%u\n", (data->alarms >> nr) & 0x01); | |
495 | } | |
496 | ||
cf0676fe RM |
497 | static struct sensor_device_attribute sda_in_input[] = { |
498 | SENSOR_ATTR(in0_input, S_IRUGO, show_in, NULL, 0), | |
499 | SENSOR_ATTR(in1_input, S_IRUGO, show_in, NULL, 1), | |
500 | SENSOR_ATTR(in2_input, S_IRUGO, show_in, NULL, 2), | |
501 | SENSOR_ATTR(in3_input, S_IRUGO, show_in, NULL, 3), | |
502 | SENSOR_ATTR(in4_input, S_IRUGO, show_in, NULL, 4), | |
503 | SENSOR_ATTR(in5_input, S_IRUGO, show_in, NULL, 5), | |
504 | SENSOR_ATTR(in6_input, S_IRUGO, show_in, NULL, 6), | |
505 | SENSOR_ATTR(in7_input, S_IRUGO, show_in, NULL, 7), | |
506 | SENSOR_ATTR(in8_input, S_IRUGO, show_in, NULL, 8), | |
507 | SENSOR_ATTR(in9_input, S_IRUGO, show_in, NULL, 9), | |
508 | }; | |
509 | ||
a4589dbb JD |
510 | static struct sensor_device_attribute sda_in_alarm[] = { |
511 | SENSOR_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0), | |
512 | SENSOR_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1), | |
513 | SENSOR_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2), | |
514 | SENSOR_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3), | |
515 | SENSOR_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8), | |
516 | SENSOR_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 21), | |
517 | SENSOR_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 20), | |
518 | SENSOR_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 16), | |
519 | SENSOR_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 17), | |
520 | SENSOR_ATTR(in9_alarm, S_IRUGO, show_alarm, NULL, 19), | |
521 | }; | |
522 | ||
cf0676fe RM |
523 | static struct sensor_device_attribute sda_in_min[] = { |
524 | SENSOR_ATTR(in0_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 0), | |
525 | SENSOR_ATTR(in1_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 1), | |
526 | SENSOR_ATTR(in2_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 2), | |
527 | SENSOR_ATTR(in3_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 3), | |
528 | SENSOR_ATTR(in4_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 4), | |
529 | SENSOR_ATTR(in5_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 5), | |
530 | SENSOR_ATTR(in6_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 6), | |
531 | SENSOR_ATTR(in7_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 7), | |
532 | SENSOR_ATTR(in8_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 8), | |
533 | SENSOR_ATTR(in9_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 9), | |
534 | }; | |
535 | ||
536 | static struct sensor_device_attribute sda_in_max[] = { | |
537 | SENSOR_ATTR(in0_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 0), | |
538 | SENSOR_ATTR(in1_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 1), | |
539 | SENSOR_ATTR(in2_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 2), | |
540 | SENSOR_ATTR(in3_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 3), | |
541 | SENSOR_ATTR(in4_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 4), | |
542 | SENSOR_ATTR(in5_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 5), | |
543 | SENSOR_ATTR(in6_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 6), | |
544 | SENSOR_ATTR(in7_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 7), | |
545 | SENSOR_ATTR(in8_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 8), | |
546 | SENSOR_ATTR(in9_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 9), | |
547 | }; | |
548 | ||
549 | static void device_create_file_in(struct device *dev, int i) | |
550 | { | |
551 | device_create_file(dev, &sda_in_input[i].dev_attr); | |
a4589dbb | 552 | device_create_file(dev, &sda_in_alarm[i].dev_attr); |
cf0676fe RM |
553 | device_create_file(dev, &sda_in_min[i].dev_attr); |
554 | device_create_file(dev, &sda_in_max[i].dev_attr); | |
555 | } | |
08e7e278 JD |
556 | |
557 | #define show_fan_reg(reg) \ | |
558 | static ssize_t \ | |
412fec82 YM |
559 | show_##reg(struct device *dev, struct device_attribute *attr, \ |
560 | char *buf) \ | |
08e7e278 JD |
561 | { \ |
562 | struct w83627ehf_data *data = w83627ehf_update_device(dev); \ | |
412fec82 YM |
563 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \ |
564 | int nr = sensor_attr->index; \ | |
08e7e278 JD |
565 | return sprintf(buf, "%d\n", \ |
566 | fan_from_reg(data->reg[nr], \ | |
567 | div_from_reg(data->fan_div[nr]))); \ | |
568 | } | |
569 | show_fan_reg(fan); | |
570 | show_fan_reg(fan_min); | |
571 | ||
572 | static ssize_t | |
412fec82 YM |
573 | show_fan_div(struct device *dev, struct device_attribute *attr, |
574 | char *buf) | |
08e7e278 JD |
575 | { |
576 | struct w83627ehf_data *data = w83627ehf_update_device(dev); | |
412fec82 YM |
577 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
578 | int nr = sensor_attr->index; | |
579 | return sprintf(buf, "%u\n", div_from_reg(data->fan_div[nr])); | |
08e7e278 JD |
580 | } |
581 | ||
582 | static ssize_t | |
412fec82 YM |
583 | store_fan_min(struct device *dev, struct device_attribute *attr, |
584 | const char *buf, size_t count) | |
08e7e278 JD |
585 | { |
586 | struct i2c_client *client = to_i2c_client(dev); | |
587 | struct w83627ehf_data *data = i2c_get_clientdata(client); | |
412fec82 YM |
588 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
589 | int nr = sensor_attr->index; | |
08e7e278 JD |
590 | unsigned int val = simple_strtoul(buf, NULL, 10); |
591 | unsigned int reg; | |
592 | u8 new_div; | |
593 | ||
9a61bf63 | 594 | mutex_lock(&data->update_lock); |
08e7e278 JD |
595 | if (!val) { |
596 | /* No min limit, alarm disabled */ | |
597 | data->fan_min[nr] = 255; | |
598 | new_div = data->fan_div[nr]; /* No change */ | |
599 | dev_info(dev, "fan%u low limit and alarm disabled\n", nr + 1); | |
600 | } else if ((reg = 1350000U / val) >= 128 * 255) { | |
601 | /* Speed below this value cannot possibly be represented, | |
602 | even with the highest divider (128) */ | |
603 | data->fan_min[nr] = 254; | |
604 | new_div = 7; /* 128 == (1 << 7) */ | |
605 | dev_warn(dev, "fan%u low limit %u below minimum %u, set to " | |
606 | "minimum\n", nr + 1, val, fan_from_reg(254, 128)); | |
607 | } else if (!reg) { | |
608 | /* Speed above this value cannot possibly be represented, | |
609 | even with the lowest divider (1) */ | |
610 | data->fan_min[nr] = 1; | |
611 | new_div = 0; /* 1 == (1 << 0) */ | |
612 | dev_warn(dev, "fan%u low limit %u above maximum %u, set to " | |
b9110b1c | 613 | "maximum\n", nr + 1, val, fan_from_reg(1, 1)); |
08e7e278 JD |
614 | } else { |
615 | /* Automatically pick the best divider, i.e. the one such | |
616 | that the min limit will correspond to a register value | |
617 | in the 96..192 range */ | |
618 | new_div = 0; | |
619 | while (reg > 192 && new_div < 7) { | |
620 | reg >>= 1; | |
621 | new_div++; | |
622 | } | |
623 | data->fan_min[nr] = reg; | |
624 | } | |
625 | ||
626 | /* Write both the fan clock divider (if it changed) and the new | |
627 | fan min (unconditionally) */ | |
628 | if (new_div != data->fan_div[nr]) { | |
629 | if (new_div > data->fan_div[nr]) | |
630 | data->fan[nr] >>= (data->fan_div[nr] - new_div); | |
631 | else | |
632 | data->fan[nr] <<= (new_div - data->fan_div[nr]); | |
633 | ||
634 | dev_dbg(dev, "fan%u clock divider changed from %u to %u\n", | |
635 | nr + 1, div_from_reg(data->fan_div[nr]), | |
636 | div_from_reg(new_div)); | |
637 | data->fan_div[nr] = new_div; | |
638 | w83627ehf_write_fan_div(client, nr); | |
639 | } | |
640 | w83627ehf_write_value(client, W83627EHF_REG_FAN_MIN[nr], | |
641 | data->fan_min[nr]); | |
9a61bf63 | 642 | mutex_unlock(&data->update_lock); |
08e7e278 JD |
643 | |
644 | return count; | |
645 | } | |
646 | ||
412fec82 YM |
647 | static struct sensor_device_attribute sda_fan_input[] = { |
648 | SENSOR_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0), | |
649 | SENSOR_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1), | |
650 | SENSOR_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2), | |
651 | SENSOR_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3), | |
652 | SENSOR_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 4), | |
653 | }; | |
08e7e278 | 654 | |
a4589dbb JD |
655 | static struct sensor_device_attribute sda_fan_alarm[] = { |
656 | SENSOR_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6), | |
657 | SENSOR_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7), | |
658 | SENSOR_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 11), | |
659 | SENSOR_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 10), | |
660 | SENSOR_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 23), | |
661 | }; | |
662 | ||
412fec82 YM |
663 | static struct sensor_device_attribute sda_fan_min[] = { |
664 | SENSOR_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan_min, | |
665 | store_fan_min, 0), | |
666 | SENSOR_ATTR(fan2_min, S_IWUSR | S_IRUGO, show_fan_min, | |
667 | store_fan_min, 1), | |
668 | SENSOR_ATTR(fan3_min, S_IWUSR | S_IRUGO, show_fan_min, | |
669 | store_fan_min, 2), | |
670 | SENSOR_ATTR(fan4_min, S_IWUSR | S_IRUGO, show_fan_min, | |
671 | store_fan_min, 3), | |
672 | SENSOR_ATTR(fan5_min, S_IWUSR | S_IRUGO, show_fan_min, | |
673 | store_fan_min, 4), | |
674 | }; | |
08e7e278 | 675 | |
412fec82 YM |
676 | static struct sensor_device_attribute sda_fan_div[] = { |
677 | SENSOR_ATTR(fan1_div, S_IRUGO, show_fan_div, NULL, 0), | |
678 | SENSOR_ATTR(fan2_div, S_IRUGO, show_fan_div, NULL, 1), | |
679 | SENSOR_ATTR(fan3_div, S_IRUGO, show_fan_div, NULL, 2), | |
680 | SENSOR_ATTR(fan4_div, S_IRUGO, show_fan_div, NULL, 3), | |
681 | SENSOR_ATTR(fan5_div, S_IRUGO, show_fan_div, NULL, 4), | |
682 | }; | |
683 | ||
684 | static void device_create_file_fan(struct device *dev, int i) | |
685 | { | |
686 | device_create_file(dev, &sda_fan_input[i].dev_attr); | |
a4589dbb | 687 | device_create_file(dev, &sda_fan_alarm[i].dev_attr); |
412fec82 YM |
688 | device_create_file(dev, &sda_fan_div[i].dev_attr); |
689 | device_create_file(dev, &sda_fan_min[i].dev_attr); | |
690 | } | |
08e7e278 JD |
691 | |
692 | #define show_temp1_reg(reg) \ | |
693 | static ssize_t \ | |
6f637a64 GKH |
694 | show_##reg(struct device *dev, struct device_attribute *attr, \ |
695 | char *buf) \ | |
08e7e278 JD |
696 | { \ |
697 | struct w83627ehf_data *data = w83627ehf_update_device(dev); \ | |
698 | return sprintf(buf, "%d\n", temp1_from_reg(data->reg)); \ | |
699 | } | |
700 | show_temp1_reg(temp1); | |
701 | show_temp1_reg(temp1_max); | |
702 | show_temp1_reg(temp1_max_hyst); | |
703 | ||
704 | #define store_temp1_reg(REG, reg) \ | |
705 | static ssize_t \ | |
6f637a64 GKH |
706 | store_temp1_##reg(struct device *dev, struct device_attribute *attr, \ |
707 | const char *buf, size_t count) \ | |
08e7e278 JD |
708 | { \ |
709 | struct i2c_client *client = to_i2c_client(dev); \ | |
710 | struct w83627ehf_data *data = i2c_get_clientdata(client); \ | |
711 | u32 val = simple_strtoul(buf, NULL, 10); \ | |
712 | \ | |
9a61bf63 | 713 | mutex_lock(&data->update_lock); \ |
08e7e278 JD |
714 | data->temp1_##reg = temp1_to_reg(val); \ |
715 | w83627ehf_write_value(client, W83627EHF_REG_TEMP1_##REG, \ | |
716 | data->temp1_##reg); \ | |
9a61bf63 | 717 | mutex_unlock(&data->update_lock); \ |
08e7e278 JD |
718 | return count; \ |
719 | } | |
720 | store_temp1_reg(OVER, max); | |
721 | store_temp1_reg(HYST, max_hyst); | |
722 | ||
08e7e278 JD |
723 | #define show_temp_reg(reg) \ |
724 | static ssize_t \ | |
412fec82 YM |
725 | show_##reg(struct device *dev, struct device_attribute *attr, \ |
726 | char *buf) \ | |
08e7e278 JD |
727 | { \ |
728 | struct w83627ehf_data *data = w83627ehf_update_device(dev); \ | |
412fec82 YM |
729 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \ |
730 | int nr = sensor_attr->index; \ | |
08e7e278 JD |
731 | return sprintf(buf, "%d\n", \ |
732 | LM75_TEMP_FROM_REG(data->reg[nr])); \ | |
733 | } | |
734 | show_temp_reg(temp); | |
735 | show_temp_reg(temp_max); | |
736 | show_temp_reg(temp_max_hyst); | |
737 | ||
738 | #define store_temp_reg(REG, reg) \ | |
739 | static ssize_t \ | |
412fec82 YM |
740 | store_##reg(struct device *dev, struct device_attribute *attr, \ |
741 | const char *buf, size_t count) \ | |
08e7e278 JD |
742 | { \ |
743 | struct i2c_client *client = to_i2c_client(dev); \ | |
744 | struct w83627ehf_data *data = i2c_get_clientdata(client); \ | |
412fec82 YM |
745 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \ |
746 | int nr = sensor_attr->index; \ | |
08e7e278 JD |
747 | u32 val = simple_strtoul(buf, NULL, 10); \ |
748 | \ | |
9a61bf63 | 749 | mutex_lock(&data->update_lock); \ |
08e7e278 JD |
750 | data->reg[nr] = LM75_TEMP_TO_REG(val); \ |
751 | w83627ehf_write_value(client, W83627EHF_REG_TEMP_##REG[nr], \ | |
752 | data->reg[nr]); \ | |
9a61bf63 | 753 | mutex_unlock(&data->update_lock); \ |
08e7e278 JD |
754 | return count; \ |
755 | } | |
756 | store_temp_reg(OVER, temp_max); | |
757 | store_temp_reg(HYST, temp_max_hyst); | |
758 | ||
412fec82 YM |
759 | static struct sensor_device_attribute sda_temp[] = { |
760 | SENSOR_ATTR(temp1_input, S_IRUGO, show_temp1, NULL, 0), | |
761 | SENSOR_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 0), | |
762 | SENSOR_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 1), | |
763 | SENSOR_ATTR(temp1_max, S_IRUGO | S_IWUSR, show_temp1_max, | |
764 | store_temp1_max, 0), | |
765 | SENSOR_ATTR(temp2_max, S_IRUGO | S_IWUSR, show_temp_max, | |
766 | store_temp_max, 0), | |
767 | SENSOR_ATTR(temp3_max, S_IRUGO | S_IWUSR, show_temp_max, | |
768 | store_temp_max, 1), | |
769 | SENSOR_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, show_temp1_max_hyst, | |
770 | store_temp1_max_hyst, 0), | |
771 | SENSOR_ATTR(temp2_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst, | |
772 | store_temp_max_hyst, 0), | |
773 | SENSOR_ATTR(temp3_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst, | |
774 | store_temp_max_hyst, 1), | |
a4589dbb JD |
775 | SENSOR_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4), |
776 | SENSOR_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5), | |
777 | SENSOR_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 13), | |
412fec82 | 778 | }; |
08e7e278 JD |
779 | |
780 | /* | |
781 | * Driver and client management | |
782 | */ | |
783 | ||
784 | static struct i2c_driver w83627ehf_driver; | |
785 | ||
786 | static void w83627ehf_init_client(struct i2c_client *client) | |
787 | { | |
788 | int i; | |
789 | u8 tmp; | |
790 | ||
791 | /* Start monitoring is needed */ | |
792 | tmp = w83627ehf_read_value(client, W83627EHF_REG_CONFIG); | |
793 | if (!(tmp & 0x01)) | |
794 | w83627ehf_write_value(client, W83627EHF_REG_CONFIG, | |
795 | tmp | 0x01); | |
796 | ||
797 | /* Enable temp2 and temp3 if needed */ | |
798 | for (i = 0; i < 2; i++) { | |
799 | tmp = w83627ehf_read_value(client, | |
800 | W83627EHF_REG_TEMP_CONFIG[i]); | |
801 | if (tmp & 0x01) | |
802 | w83627ehf_write_value(client, | |
803 | W83627EHF_REG_TEMP_CONFIG[i], | |
804 | tmp & 0xfe); | |
805 | } | |
806 | } | |
807 | ||
2d8672c5 | 808 | static int w83627ehf_detect(struct i2c_adapter *adapter) |
08e7e278 JD |
809 | { |
810 | struct i2c_client *client; | |
811 | struct w83627ehf_data *data; | |
412fec82 | 812 | struct device *dev; |
08e7e278 JD |
813 | int i, err = 0; |
814 | ||
ada0c2f8 | 815 | if (!request_region(address + REGION_OFFSET, REGION_LENGTH, |
cdaf7934 | 816 | w83627ehf_driver.driver.name)) { |
08e7e278 JD |
817 | err = -EBUSY; |
818 | goto exit; | |
819 | } | |
820 | ||
ba9c2e8d | 821 | if (!(data = kzalloc(sizeof(struct w83627ehf_data), GFP_KERNEL))) { |
08e7e278 JD |
822 | err = -ENOMEM; |
823 | goto exit_release; | |
824 | } | |
08e7e278 JD |
825 | |
826 | client = &data->client; | |
827 | i2c_set_clientdata(client, data); | |
828 | client->addr = address; | |
9a61bf63 | 829 | mutex_init(&data->lock); |
08e7e278 JD |
830 | client->adapter = adapter; |
831 | client->driver = &w83627ehf_driver; | |
832 | client->flags = 0; | |
412fec82 | 833 | dev = &client->dev; |
08e7e278 JD |
834 | |
835 | strlcpy(client->name, "w83627ehf", I2C_NAME_SIZE); | |
836 | data->valid = 0; | |
9a61bf63 | 837 | mutex_init(&data->update_lock); |
08e7e278 JD |
838 | |
839 | /* Tell the i2c layer a new client has arrived */ | |
840 | if ((err = i2c_attach_client(client))) | |
841 | goto exit_free; | |
842 | ||
843 | /* Initialize the chip */ | |
844 | w83627ehf_init_client(client); | |
845 | ||
846 | /* A few vars need to be filled upon startup */ | |
847 | for (i = 0; i < 5; i++) | |
848 | data->fan_min[i] = w83627ehf_read_value(client, | |
849 | W83627EHF_REG_FAN_MIN[i]); | |
850 | ||
851 | /* It looks like fan4 and fan5 pins can be alternatively used | |
852 | as fan on/off switches */ | |
853 | data->has_fan = 0x07; /* fan1, fan2 and fan3 */ | |
854 | i = w83627ehf_read_value(client, W83627EHF_REG_FANDIV1); | |
855 | if (i & (1 << 2)) | |
856 | data->has_fan |= (1 << 3); | |
857 | if (i & (1 << 0)) | |
858 | data->has_fan |= (1 << 4); | |
859 | ||
860 | /* Register sysfs hooks */ | |
412fec82 | 861 | data->class_dev = hwmon_device_register(dev); |
943b0830 MH |
862 | if (IS_ERR(data->class_dev)) { |
863 | err = PTR_ERR(data->class_dev); | |
864 | goto exit_detach; | |
865 | } | |
866 | ||
cf0676fe RM |
867 | for (i = 0; i < 10; i++) |
868 | device_create_file_in(dev, i); | |
869 | ||
412fec82 YM |
870 | for (i = 0; i < 5; i++) { |
871 | if (data->has_fan & (1 << i)) | |
872 | device_create_file_fan(dev, i); | |
08e7e278 | 873 | } |
412fec82 YM |
874 | for (i = 0; i < ARRAY_SIZE(sda_temp); i++) |
875 | device_create_file(dev, &sda_temp[i].dev_attr); | |
08e7e278 JD |
876 | |
877 | return 0; | |
878 | ||
943b0830 MH |
879 | exit_detach: |
880 | i2c_detach_client(client); | |
08e7e278 JD |
881 | exit_free: |
882 | kfree(data); | |
883 | exit_release: | |
ada0c2f8 | 884 | release_region(address + REGION_OFFSET, REGION_LENGTH); |
08e7e278 JD |
885 | exit: |
886 | return err; | |
887 | } | |
888 | ||
08e7e278 JD |
889 | static int w83627ehf_detach_client(struct i2c_client *client) |
890 | { | |
943b0830 | 891 | struct w83627ehf_data *data = i2c_get_clientdata(client); |
08e7e278 JD |
892 | int err; |
893 | ||
943b0830 MH |
894 | hwmon_device_unregister(data->class_dev); |
895 | ||
7bef5594 | 896 | if ((err = i2c_detach_client(client))) |
08e7e278 | 897 | return err; |
ada0c2f8 | 898 | release_region(client->addr + REGION_OFFSET, REGION_LENGTH); |
943b0830 | 899 | kfree(data); |
08e7e278 JD |
900 | |
901 | return 0; | |
902 | } | |
903 | ||
904 | static struct i2c_driver w83627ehf_driver = { | |
cdaf7934 | 905 | .driver = { |
cdaf7934 LR |
906 | .name = "w83627ehf", |
907 | }, | |
2d8672c5 | 908 | .attach_adapter = w83627ehf_detect, |
08e7e278 JD |
909 | .detach_client = w83627ehf_detach_client, |
910 | }; | |
911 | ||
2d8672c5 | 912 | static int __init w83627ehf_find(int sioaddr, unsigned short *addr) |
08e7e278 JD |
913 | { |
914 | u16 val; | |
915 | ||
916 | REG = sioaddr; | |
917 | VAL = sioaddr + 1; | |
918 | superio_enter(); | |
919 | ||
920 | val = (superio_inb(SIO_REG_DEVID) << 8) | |
921 | | superio_inb(SIO_REG_DEVID + 1); | |
922 | if ((val & SIO_ID_MASK) != SIO_W83627EHF_ID) { | |
923 | superio_exit(); | |
924 | return -ENODEV; | |
925 | } | |
926 | ||
927 | superio_select(W83627EHF_LD_HWM); | |
928 | val = (superio_inb(SIO_REG_ADDR) << 8) | |
929 | | superio_inb(SIO_REG_ADDR + 1); | |
ada0c2f8 | 930 | *addr = val & REGION_ALIGNMENT; |
2d8672c5 | 931 | if (*addr == 0) { |
08e7e278 JD |
932 | superio_exit(); |
933 | return -ENODEV; | |
934 | } | |
935 | ||
936 | /* Activate logical device if needed */ | |
937 | val = superio_inb(SIO_REG_ENABLE); | |
938 | if (!(val & 0x01)) | |
939 | superio_outb(SIO_REG_ENABLE, val | 0x01); | |
940 | ||
941 | superio_exit(); | |
942 | return 0; | |
943 | } | |
944 | ||
945 | static int __init sensors_w83627ehf_init(void) | |
946 | { | |
2d8672c5 JD |
947 | if (w83627ehf_find(0x2e, &address) |
948 | && w83627ehf_find(0x4e, &address)) | |
08e7e278 JD |
949 | return -ENODEV; |
950 | ||
fde09509 | 951 | return i2c_isa_add_driver(&w83627ehf_driver); |
08e7e278 JD |
952 | } |
953 | ||
954 | static void __exit sensors_w83627ehf_exit(void) | |
955 | { | |
fde09509 | 956 | i2c_isa_del_driver(&w83627ehf_driver); |
08e7e278 JD |
957 | } |
958 | ||
959 | MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>"); | |
960 | MODULE_DESCRIPTION("W83627EHF driver"); | |
961 | MODULE_LICENSE("GPL"); | |
962 | ||
963 | module_init(sensors_w83627ehf_init); | |
964 | module_exit(sensors_w83627ehf_exit); |