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libata: implement ATA_HORKAGE_ATAPI_MOD16_DMA and apply it
[linux-2.6/mini2440.git] / drivers / hwmon / w83627ehf.c
blob075164dd65a7a6716965538ac56d7b0320e14541
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 Copyright (C) 2006 Yuan Mu (Winbond),
6 Rudolf Marek <r.marek@assembler.cz>
7 David Hubbard <david.c.hubbard@gmail.com>
8
9 Shamelessly ripped from the w83627hf driver
10 Copyright (C) 2003 Mark Studebaker
11
12 Thanks to Leon Moonen, Steve Cliffe and Grant Coady for their help
13 in testing and debugging this driver.
14
15 This driver also supports the W83627EHG, which is the lead-free
16 version of the W83627EHF.
17
18 This program is free software; you can redistribute it and/or modify
19 it under the terms of the GNU General Public License as published by
20 the Free Software Foundation; either version 2 of the License, or
21 (at your option) any later version.
22
23 This program is distributed in the hope that it will be useful,
24 but WITHOUT ANY WARRANTY; without even the implied warranty of
25 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
26 GNU General Public License for more details.
27
28 You should have received a copy of the GNU General Public License
29 along with this program; if not, write to the Free Software
30 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
31
32
33 Supports the following chips:
34
35 Chip #vin #fan #pwm #temp chip IDs man ID
36 w83627ehf 10 5 4 3 0x8850 0x88 0x5ca3
37 0x8860 0xa1
38 w83627dhg 9 5 4 3 0xa020 0xc1 0x5ca3
39 */
40
41 #include <linux/module.h>
42 #include <linux/init.h>
43 #include <linux/slab.h>
44 #include <linux/jiffies.h>
45 #include <linux/platform_device.h>
46 #include <linux/hwmon.h>
47 #include <linux/hwmon-sysfs.h>
48 #include <linux/hwmon-vid.h>
49 #include <linux/err.h>
50 #include <linux/mutex.h>
51 #include <asm/io.h>
52 #include "lm75.h"
53
54 enum kinds { w83627ehf, w83627dhg };
55
56 /* used to set data->name = w83627ehf_device_names[data->sio_kind] */
57 static const char * w83627ehf_device_names[] = {
58 "w83627ehf",
59 "w83627dhg",
60 };
61
62 static unsigned short force_id;
63 module_param(force_id, ushort, 0);
64 MODULE_PARM_DESC(force_id, "Override the detected device ID");
65
66 #define DRVNAME "w83627ehf"
67
68 /*
69 * Super-I/O constants and functions
70 */
71
72 #define W83627EHF_LD_HWM 0x0b
73
74 #define SIO_REG_LDSEL 0x07 /* Logical device select */
75 #define SIO_REG_DEVID 0x20 /* Device ID (2 bytes) */
76 #define SIO_REG_EN_VRM10 0x2C /* GPIO3, GPIO4 selection */
77 #define SIO_REG_ENABLE 0x30 /* Logical device enable */
78 #define SIO_REG_ADDR 0x60 /* Logical device address (2 bytes) */
79 #define SIO_REG_VID_CTRL 0xF0 /* VID control */
80 #define SIO_REG_VID_DATA 0xF1 /* VID data */
81
82 #define SIO_W83627EHF_ID 0x8850
83 #define SIO_W83627EHG_ID 0x8860
84 #define SIO_W83627DHG_ID 0xa020
85 #define SIO_ID_MASK 0xFFF0
86
87 static inline void
88 superio_outb(int ioreg, int reg, int val)
89 {
90 outb(reg, ioreg);
91 outb(val, ioreg + 1);
92 }
93
94 static inline int
95 superio_inb(int ioreg, int reg)
96 {
97 outb(reg, ioreg);
98 return inb(ioreg + 1);
99 }
100
101 static inline void
102 superio_select(int ioreg, int ld)
103 {
104 outb(SIO_REG_LDSEL, ioreg);
105 outb(ld, ioreg + 1);
106 }
107
108 static inline void
109 superio_enter(int ioreg)
110 {
111 outb(0x87, ioreg);
112 outb(0x87, ioreg);
113 }
114
115 static inline void
116 superio_exit(int ioreg)
117 {
118 outb(0x02, ioreg);
119 outb(0x02, ioreg + 1);
120 }
121
122 /*
123 * ISA constants
124 */
125
126 #define IOREGION_ALIGNMENT ~7
127 #define IOREGION_OFFSET 5
128 #define IOREGION_LENGTH 2
129 #define ADDR_REG_OFFSET 0
130 #define DATA_REG_OFFSET 1
131
132 #define W83627EHF_REG_BANK 0x4E
133 #define W83627EHF_REG_CONFIG 0x40
134
135 /* Not currently used:
136 * REG_MAN_ID has the value 0x5ca3 for all supported chips.
137 * REG_CHIP_ID == 0x88/0xa1/0xc1 depending on chip model.
138 * REG_MAN_ID is at port 0x4f
139 * REG_CHIP_ID is at port 0x58 */
140
141 static const u16 W83627EHF_REG_FAN[] = { 0x28, 0x29, 0x2a, 0x3f, 0x553 };
142 static const u16 W83627EHF_REG_FAN_MIN[] = { 0x3b, 0x3c, 0x3d, 0x3e, 0x55c };
143
144 /* The W83627EHF registers for nr=7,8,9 are in bank 5 */
145 #define W83627EHF_REG_IN_MAX(nr) ((nr < 7) ? (0x2b + (nr) * 2) : \
146 (0x554 + (((nr) - 7) * 2)))
147 #define W83627EHF_REG_IN_MIN(nr) ((nr < 7) ? (0x2c + (nr) * 2) : \
148 (0x555 + (((nr) - 7) * 2)))
149 #define W83627EHF_REG_IN(nr) ((nr < 7) ? (0x20 + (nr)) : \
150 (0x550 + (nr) - 7))
151
152 #define W83627EHF_REG_TEMP1 0x27
153 #define W83627EHF_REG_TEMP1_HYST 0x3a
154 #define W83627EHF_REG_TEMP1_OVER 0x39
155 static const u16 W83627EHF_REG_TEMP[] = { 0x150, 0x250 };
156 static const u16 W83627EHF_REG_TEMP_HYST[] = { 0x153, 0x253 };
157 static const u16 W83627EHF_REG_TEMP_OVER[] = { 0x155, 0x255 };
158 static const u16 W83627EHF_REG_TEMP_CONFIG[] = { 0x152, 0x252 };
159
160 /* Fan clock dividers are spread over the following five registers */
161 #define W83627EHF_REG_FANDIV1 0x47
162 #define W83627EHF_REG_FANDIV2 0x4B
163 #define W83627EHF_REG_VBAT 0x5D
164 #define W83627EHF_REG_DIODE 0x59
165 #define W83627EHF_REG_SMI_OVT 0x4C
166
167 #define W83627EHF_REG_ALARM1 0x459
168 #define W83627EHF_REG_ALARM2 0x45A
169 #define W83627EHF_REG_ALARM3 0x45B
170
171 /* SmartFan registers */
172 /* DC or PWM output fan configuration */
173 static const u8 W83627EHF_REG_PWM_ENABLE[] = {
174 0x04, /* SYS FAN0 output mode and PWM mode */
175 0x04, /* CPU FAN0 output mode and PWM mode */
176 0x12, /* AUX FAN mode */
177 0x62, /* CPU fan1 mode */
178 };
179
180 static const u8 W83627EHF_PWM_MODE_SHIFT[] = { 0, 1, 0, 6 };
181 static const u8 W83627EHF_PWM_ENABLE_SHIFT[] = { 2, 4, 1, 4 };
182
183 /* FAN Duty Cycle, be used to control */
184 static const u8 W83627EHF_REG_PWM[] = { 0x01, 0x03, 0x11, 0x61 };
185 static const u8 W83627EHF_REG_TARGET[] = { 0x05, 0x06, 0x13, 0x63 };
186 static const u8 W83627EHF_REG_TOLERANCE[] = { 0x07, 0x07, 0x14, 0x62 };
187
188
189 /* Advanced Fan control, some values are common for all fans */
190 static const u8 W83627EHF_REG_FAN_MIN_OUTPUT[] = { 0x08, 0x09, 0x15, 0x64 };
191 static const u8 W83627EHF_REG_FAN_STOP_TIME[] = { 0x0C, 0x0D, 0x17, 0x66 };
192
193 /*
194 * Conversions
195 */
196
197 /* 1 is PWM mode, output in ms */
198 static inline unsigned int step_time_from_reg(u8 reg, u8 mode)
199 {
200 return mode ? 100 * reg : 400 * reg;
201 }
202
203 static inline u8 step_time_to_reg(unsigned int msec, u8 mode)
204 {
205 return SENSORS_LIMIT((mode ? (msec + 50) / 100 :
206 (msec + 200) / 400), 1, 255);
207 }
208
209 static inline unsigned int
210 fan_from_reg(u8 reg, unsigned int div)
211 {
212 if (reg == 0 || reg == 255)
213 return 0;
214 return 1350000U / (reg * div);
215 }
216
217 static inline unsigned int
218 div_from_reg(u8 reg)
219 {
220 return 1 << reg;
221 }
222
223 static inline int
224 temp1_from_reg(s8 reg)
225 {
226 return reg * 1000;
227 }
228
229 static inline s8
230 temp1_to_reg(long temp, int min, int max)
231 {
232 if (temp <= min)
233 return min / 1000;
234 if (temp >= max)
235 return max / 1000;
236 if (temp < 0)
237 return (temp - 500) / 1000;
238 return (temp + 500) / 1000;
239 }
240
241 /* Some of analog inputs have internal scaling (2x), 8mV is ADC LSB */
242
243 static u8 scale_in[10] = { 8, 8, 16, 16, 8, 8, 8, 16, 16, 8 };
244
245 static inline long in_from_reg(u8 reg, u8 nr)
246 {
247 return reg * scale_in[nr];
248 }
249
250 static inline u8 in_to_reg(u32 val, u8 nr)
251 {
252 return SENSORS_LIMIT(((val + (scale_in[nr] / 2)) / scale_in[nr]), 0, 255);
253 }
254
255 /*
256 * Data structures and manipulation thereof
257 */
258
259 struct w83627ehf_data {
260 int addr; /* IO base of hw monitor block */
261 const char *name;
262
263 struct device *hwmon_dev;
264 struct mutex lock;
265
266 struct mutex update_lock;
267 char valid; /* !=0 if following fields are valid */
268 unsigned long last_updated; /* In jiffies */
269
270 /* Register values */
271 u8 in_num; /* number of in inputs we have */
272 u8 in[10]; /* Register value */
273 u8 in_max[10]; /* Register value */
274 u8 in_min[10]; /* Register value */
275 u8 fan[5];
276 u8 fan_min[5];
277 u8 fan_div[5];
278 u8 has_fan; /* some fan inputs can be disabled */
279 u8 temp_type[3];
280 s8 temp1;
281 s8 temp1_max;
282 s8 temp1_max_hyst;
283 s16 temp[2];
284 s16 temp_max[2];
285 s16 temp_max_hyst[2];
286 u32 alarms;
287
288 u8 pwm_mode[4]; /* 0->DC variable voltage, 1->PWM variable duty cycle */
289 u8 pwm_enable[4]; /* 1->manual
290 2->thermal cruise (also called SmartFan I) */
291 u8 pwm[4];
292 u8 target_temp[4];
293 u8 tolerance[4];
294
295 u8 fan_min_output[4]; /* minimum fan speed */
296 u8 fan_stop_time[4];
297
298 u8 vid;
299 u8 vrm;
300 };
301
302 struct w83627ehf_sio_data {
303 int sioreg;
304 enum kinds kind;
305 };
306
307 static inline int is_word_sized(u16 reg)
308 {
309 return (((reg & 0xff00) == 0x100
310 || (reg & 0xff00) == 0x200)
311 && ((reg & 0x00ff) == 0x50
312 || (reg & 0x00ff) == 0x53
313 || (reg & 0x00ff) == 0x55));
314 }
315
316 /* Registers 0x50-0x5f are banked */
317 static inline void w83627ehf_set_bank(struct w83627ehf_data *data, u16 reg)
318 {
319 if ((reg & 0x00f0) == 0x50) {
320 outb_p(W83627EHF_REG_BANK, data->addr + ADDR_REG_OFFSET);
321 outb_p(reg >> 8, data->addr + DATA_REG_OFFSET);
322 }
323 }
324
325 /* Not strictly necessary, but play it safe for now */
326 static inline void w83627ehf_reset_bank(struct w83627ehf_data *data, u16 reg)
327 {
328 if (reg & 0xff00) {
329 outb_p(W83627EHF_REG_BANK, data->addr + ADDR_REG_OFFSET);
330 outb_p(0, data->addr + DATA_REG_OFFSET);
331 }
332 }
333
334 static u16 w83627ehf_read_value(struct w83627ehf_data *data, u16 reg)
335 {
336 int res, word_sized = is_word_sized(reg);
337
338 mutex_lock(&data->lock);
339
340 w83627ehf_set_bank(data, reg);
341 outb_p(reg & 0xff, data->addr + ADDR_REG_OFFSET);
342 res = inb_p(data->addr + DATA_REG_OFFSET);
343 if (word_sized) {
344 outb_p((reg & 0xff) + 1,
345 data->addr + ADDR_REG_OFFSET);
346 res = (res << 8) + inb_p(data->addr + DATA_REG_OFFSET);
347 }
348 w83627ehf_reset_bank(data, reg);
349
350 mutex_unlock(&data->lock);
351
352 return res;
353 }
354
355 static int w83627ehf_write_value(struct w83627ehf_data *data, u16 reg, u16 value)
356 {
357 int word_sized = is_word_sized(reg);
358
359 mutex_lock(&data->lock);
360
361 w83627ehf_set_bank(data, reg);
362 outb_p(reg & 0xff, data->addr + ADDR_REG_OFFSET);
363 if (word_sized) {
364 outb_p(value >> 8, data->addr + DATA_REG_OFFSET);
365 outb_p((reg & 0xff) + 1,
366 data->addr + ADDR_REG_OFFSET);
367 }
368 outb_p(value & 0xff, data->addr + DATA_REG_OFFSET);
369 w83627ehf_reset_bank(data, reg);
370
371 mutex_unlock(&data->lock);
372 return 0;
373 }
374
375 /* This function assumes that the caller holds data->update_lock */
376 static void w83627ehf_write_fan_div(struct w83627ehf_data *data, int nr)
377 {
378 u8 reg;
379
380 switch (nr) {
381 case 0:
382 reg = (w83627ehf_read_value(data, W83627EHF_REG_FANDIV1) & 0xcf)
383 | ((data->fan_div[0] & 0x03) << 4);
384 /* fan5 input control bit is write only, compute the value */
385 reg |= (data->has_fan & (1 << 4)) ? 1 : 0;
386 w83627ehf_write_value(data, W83627EHF_REG_FANDIV1, reg);
387 reg = (w83627ehf_read_value(data, W83627EHF_REG_VBAT) & 0xdf)
388 | ((data->fan_div[0] & 0x04) << 3);
389 w83627ehf_write_value(data, W83627EHF_REG_VBAT, reg);
390 break;
391 case 1:
392 reg = (w83627ehf_read_value(data, W83627EHF_REG_FANDIV1) & 0x3f)
393 | ((data->fan_div[1] & 0x03) << 6);
394 /* fan5 input control bit is write only, compute the value */
395 reg |= (data->has_fan & (1 << 4)) ? 1 : 0;
396 w83627ehf_write_value(data, W83627EHF_REG_FANDIV1, reg);
397 reg = (w83627ehf_read_value(data, W83627EHF_REG_VBAT) & 0xbf)
398 | ((data->fan_div[1] & 0x04) << 4);
399 w83627ehf_write_value(data, W83627EHF_REG_VBAT, reg);
400 break;
401 case 2:
402 reg = (w83627ehf_read_value(data, W83627EHF_REG_FANDIV2) & 0x3f)
403 | ((data->fan_div[2] & 0x03) << 6);
404 w83627ehf_write_value(data, W83627EHF_REG_FANDIV2, reg);
405 reg = (w83627ehf_read_value(data, W83627EHF_REG_VBAT) & 0x7f)
406 | ((data->fan_div[2] & 0x04) << 5);
407 w83627ehf_write_value(data, W83627EHF_REG_VBAT, reg);
408 break;
409 case 3:
410 reg = (w83627ehf_read_value(data, W83627EHF_REG_DIODE) & 0xfc)
411 | (data->fan_div[3] & 0x03);
412 w83627ehf_write_value(data, W83627EHF_REG_DIODE, reg);
413 reg = (w83627ehf_read_value(data, W83627EHF_REG_SMI_OVT) & 0x7f)
414 | ((data->fan_div[3] & 0x04) << 5);
415 w83627ehf_write_value(data, W83627EHF_REG_SMI_OVT, reg);
416 break;
417 case 4:
418 reg = (w83627ehf_read_value(data, W83627EHF_REG_DIODE) & 0x73)
419 | ((data->fan_div[4] & 0x03) << 2)
420 | ((data->fan_div[4] & 0x04) << 5);
421 w83627ehf_write_value(data, W83627EHF_REG_DIODE, reg);
422 break;
423 }
424 }
425
426 static void w83627ehf_update_fan_div(struct w83627ehf_data *data)
427 {
428 int i;
429
430 i = w83627ehf_read_value(data, W83627EHF_REG_FANDIV1);
431 data->fan_div[0] = (i >> 4) & 0x03;
432 data->fan_div[1] = (i >> 6) & 0x03;
433 i = w83627ehf_read_value(data, W83627EHF_REG_FANDIV2);
434 data->fan_div[2] = (i >> 6) & 0x03;
435 i = w83627ehf_read_value(data, W83627EHF_REG_VBAT);
436 data->fan_div[0] |= (i >> 3) & 0x04;
437 data->fan_div[1] |= (i >> 4) & 0x04;
438 data->fan_div[2] |= (i >> 5) & 0x04;
439 if (data->has_fan & ((1 << 3) | (1 << 4))) {
440 i = w83627ehf_read_value(data, W83627EHF_REG_DIODE);
441 data->fan_div[3] = i & 0x03;
442 data->fan_div[4] = ((i >> 2) & 0x03)
443 | ((i >> 5) & 0x04);
444 }
445 if (data->has_fan & (1 << 3)) {
446 i = w83627ehf_read_value(data, W83627EHF_REG_SMI_OVT);
447 data->fan_div[3] |= (i >> 5) & 0x04;
448 }
449 }
450
451 static struct w83627ehf_data *w83627ehf_update_device(struct device *dev)
452 {
453 struct w83627ehf_data *data = dev_get_drvdata(dev);
454 int pwmcfg = 0, tolerance = 0; /* shut up the compiler */
455 int i;
456
457 mutex_lock(&data->update_lock);
458
459 if (time_after(jiffies, data->last_updated + HZ + HZ/2)
460 || !data->valid) {
461 /* Fan clock dividers */
462 w83627ehf_update_fan_div(data);
463
464 /* Measured voltages and limits */
465 for (i = 0; i < data->in_num; i++) {
466 data->in[i] = w83627ehf_read_value(data,
467 W83627EHF_REG_IN(i));
468 data->in_min[i] = w83627ehf_read_value(data,
469 W83627EHF_REG_IN_MIN(i));
470 data->in_max[i] = w83627ehf_read_value(data,
471 W83627EHF_REG_IN_MAX(i));
472 }
473
474 /* Measured fan speeds and limits */
475 for (i = 0; i < 5; i++) {
476 if (!(data->has_fan & (1 << i)))
477 continue;
478
479 data->fan[i] = w83627ehf_read_value(data,
480 W83627EHF_REG_FAN[i]);
481 data->fan_min[i] = w83627ehf_read_value(data,
482 W83627EHF_REG_FAN_MIN[i]);
483
484 /* If we failed to measure the fan speed and clock
485 divider can be increased, let's try that for next
486 time */
487 if (data->fan[i] == 0xff
488 && data->fan_div[i] < 0x07) {
489 dev_dbg(dev, "Increasing fan%d "
490 "clock divider from %u to %u\n",
491 i + 1, div_from_reg(data->fan_div[i]),
492 div_from_reg(data->fan_div[i] + 1));
493 data->fan_div[i]++;
494 w83627ehf_write_fan_div(data, i);
495 /* Preserve min limit if possible */
496 if (data->fan_min[i] >= 2
497 && data->fan_min[i] != 255)
498 w83627ehf_write_value(data,
499 W83627EHF_REG_FAN_MIN[i],
500 (data->fan_min[i] /= 2));
501 }
502 }
503
504 for (i = 0; i < 4; i++) {
505 /* pwmcfg, tolarance mapped for i=0, i=1 to same reg */
506 if (i != 1) {
507 pwmcfg = w83627ehf_read_value(data,
508 W83627EHF_REG_PWM_ENABLE[i]);
509 tolerance = w83627ehf_read_value(data,
510 W83627EHF_REG_TOLERANCE[i]);
511 }
512 data->pwm_mode[i] =
513 ((pwmcfg >> W83627EHF_PWM_MODE_SHIFT[i]) & 1)
514 ? 0 : 1;
515 data->pwm_enable[i] =
516 ((pwmcfg >> W83627EHF_PWM_ENABLE_SHIFT[i])
517 & 3) + 1;
518 data->pwm[i] = w83627ehf_read_value(data,
519 W83627EHF_REG_PWM[i]);
520 data->fan_min_output[i] = w83627ehf_read_value(data,
521 W83627EHF_REG_FAN_MIN_OUTPUT[i]);
522 data->fan_stop_time[i] = w83627ehf_read_value(data,
523 W83627EHF_REG_FAN_STOP_TIME[i]);
524 data->target_temp[i] =
525 w83627ehf_read_value(data,
526 W83627EHF_REG_TARGET[i]) &
527 (data->pwm_mode[i] == 1 ? 0x7f : 0xff);
528 data->tolerance[i] = (tolerance >> (i == 1 ? 4 : 0))
529 & 0x0f;
530 }
531
532 /* Measured temperatures and limits */
533 data->temp1 = w83627ehf_read_value(data,
534 W83627EHF_REG_TEMP1);
535 data->temp1_max = w83627ehf_read_value(data,
536 W83627EHF_REG_TEMP1_OVER);
537 data->temp1_max_hyst = w83627ehf_read_value(data,
538 W83627EHF_REG_TEMP1_HYST);
539 for (i = 0; i < 2; i++) {
540 data->temp[i] = w83627ehf_read_value(data,
541 W83627EHF_REG_TEMP[i]);
542 data->temp_max[i] = w83627ehf_read_value(data,
543 W83627EHF_REG_TEMP_OVER[i]);
544 data->temp_max_hyst[i] = w83627ehf_read_value(data,
545 W83627EHF_REG_TEMP_HYST[i]);
546 }
547
548 data->alarms = w83627ehf_read_value(data,
549 W83627EHF_REG_ALARM1) |
550 (w83627ehf_read_value(data,
551 W83627EHF_REG_ALARM2) << 8) |
552 (w83627ehf_read_value(data,
553 W83627EHF_REG_ALARM3) << 16);
554
555 data->last_updated = jiffies;
556 data->valid = 1;
557 }
558
559 mutex_unlock(&data->update_lock);
560 return data;
561 }
562
563 /*
564 * Sysfs callback functions
565 */
566 #define show_in_reg(reg) \
567 static ssize_t \
568 show_##reg(struct device *dev, struct device_attribute *attr, \
569 char *buf) \
570 { \
571 struct w83627ehf_data *data = w83627ehf_update_device(dev); \
572 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
573 int nr = sensor_attr->index; \
574 return sprintf(buf, "%ld\n", in_from_reg(data->reg[nr], nr)); \
575 }
576 show_in_reg(in)
577 show_in_reg(in_min)
578 show_in_reg(in_max)
579
580 #define store_in_reg(REG, reg) \
581 static ssize_t \
582 store_in_##reg (struct device *dev, struct device_attribute *attr, \
583 const char *buf, size_t count) \
584 { \
585 struct w83627ehf_data *data = dev_get_drvdata(dev); \
586 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
587 int nr = sensor_attr->index; \
588 u32 val = simple_strtoul(buf, NULL, 10); \
589 \
590 mutex_lock(&data->update_lock); \
591 data->in_##reg[nr] = in_to_reg(val, nr); \
592 w83627ehf_write_value(data, W83627EHF_REG_IN_##REG(nr), \
593 data->in_##reg[nr]); \
594 mutex_unlock(&data->update_lock); \
595 return count; \
596 }
597
598 store_in_reg(MIN, min)
599 store_in_reg(MAX, max)
600
601 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, char *buf)
602 {
603 struct w83627ehf_data *data = w83627ehf_update_device(dev);
604 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
605 int nr = sensor_attr->index;
606 return sprintf(buf, "%u\n", (data->alarms >> nr) & 0x01);
607 }
608
609 static struct sensor_device_attribute sda_in_input[] = {
610 SENSOR_ATTR(in0_input, S_IRUGO, show_in, NULL, 0),
611 SENSOR_ATTR(in1_input, S_IRUGO, show_in, NULL, 1),
612 SENSOR_ATTR(in2_input, S_IRUGO, show_in, NULL, 2),
613 SENSOR_ATTR(in3_input, S_IRUGO, show_in, NULL, 3),
614 SENSOR_ATTR(in4_input, S_IRUGO, show_in, NULL, 4),
615 SENSOR_ATTR(in5_input, S_IRUGO, show_in, NULL, 5),
616 SENSOR_ATTR(in6_input, S_IRUGO, show_in, NULL, 6),
617 SENSOR_ATTR(in7_input, S_IRUGO, show_in, NULL, 7),
618 SENSOR_ATTR(in8_input, S_IRUGO, show_in, NULL, 8),
619 SENSOR_ATTR(in9_input, S_IRUGO, show_in, NULL, 9),
620 };
621
622 static struct sensor_device_attribute sda_in_alarm[] = {
623 SENSOR_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0),
624 SENSOR_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1),
625 SENSOR_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2),
626 SENSOR_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3),
627 SENSOR_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8),
628 SENSOR_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 21),
629 SENSOR_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 20),
630 SENSOR_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 16),
631 SENSOR_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 17),
632 SENSOR_ATTR(in9_alarm, S_IRUGO, show_alarm, NULL, 19),
633 };
634
635 static struct sensor_device_attribute sda_in_min[] = {
636 SENSOR_ATTR(in0_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 0),
637 SENSOR_ATTR(in1_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 1),
638 SENSOR_ATTR(in2_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 2),
639 SENSOR_ATTR(in3_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 3),
640 SENSOR_ATTR(in4_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 4),
641 SENSOR_ATTR(in5_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 5),
642 SENSOR_ATTR(in6_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 6),
643 SENSOR_ATTR(in7_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 7),
644 SENSOR_ATTR(in8_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 8),
645 SENSOR_ATTR(in9_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 9),
646 };
647
648 static struct sensor_device_attribute sda_in_max[] = {
649 SENSOR_ATTR(in0_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 0),
650 SENSOR_ATTR(in1_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 1),
651 SENSOR_ATTR(in2_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 2),
652 SENSOR_ATTR(in3_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 3),
653 SENSOR_ATTR(in4_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 4),
654 SENSOR_ATTR(in5_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 5),
655 SENSOR_ATTR(in6_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 6),
656 SENSOR_ATTR(in7_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 7),
657 SENSOR_ATTR(in8_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 8),
658 SENSOR_ATTR(in9_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 9),
659 };
660
661 #define show_fan_reg(reg) \
662 static ssize_t \
663 show_##reg(struct device *dev, struct device_attribute *attr, \
664 char *buf) \
665 { \
666 struct w83627ehf_data *data = w83627ehf_update_device(dev); \
667 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
668 int nr = sensor_attr->index; \
669 return sprintf(buf, "%d\n", \
670 fan_from_reg(data->reg[nr], \
671 div_from_reg(data->fan_div[nr]))); \
672 }
673 show_fan_reg(fan);
674 show_fan_reg(fan_min);
675
676 static ssize_t
677 show_fan_div(struct device *dev, struct device_attribute *attr,
678 char *buf)
679 {
680 struct w83627ehf_data *data = w83627ehf_update_device(dev);
681 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
682 int nr = sensor_attr->index;
683 return sprintf(buf, "%u\n", div_from_reg(data->fan_div[nr]));
684 }
685
686 static ssize_t
687 store_fan_min(struct device *dev, struct device_attribute *attr,
688 const char *buf, size_t count)
689 {
690 struct w83627ehf_data *data = dev_get_drvdata(dev);
691 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
692 int nr = sensor_attr->index;
693 unsigned int val = simple_strtoul(buf, NULL, 10);
694 unsigned int reg;
695 u8 new_div;
696
697 mutex_lock(&data->update_lock);
698 if (!val) {
699 /* No min limit, alarm disabled */
700 data->fan_min[nr] = 255;
701 new_div = data->fan_div[nr]; /* No change */
702 dev_info(dev, "fan%u low limit and alarm disabled\n", nr + 1);
703 } else if ((reg = 1350000U / val) >= 128 * 255) {
704 /* Speed below this value cannot possibly be represented,
705 even with the highest divider (128) */
706 data->fan_min[nr] = 254;
707 new_div = 7; /* 128 == (1 << 7) */
708 dev_warn(dev, "fan%u low limit %u below minimum %u, set to "
709 "minimum\n", nr + 1, val, fan_from_reg(254, 128));
710 } else if (!reg) {
711 /* Speed above this value cannot possibly be represented,
712 even with the lowest divider (1) */
713 data->fan_min[nr] = 1;
714 new_div = 0; /* 1 == (1 << 0) */
715 dev_warn(dev, "fan%u low limit %u above maximum %u, set to "
716 "maximum\n", nr + 1, val, fan_from_reg(1, 1));
717 } else {
718 /* Automatically pick the best divider, i.e. the one such
719 that the min limit will correspond to a register value
720 in the 96..192 range */
721 new_div = 0;
722 while (reg > 192 && new_div < 7) {
723 reg >>= 1;
724 new_div++;
725 }
726 data->fan_min[nr] = reg;
727 }
728
729 /* Write both the fan clock divider (if it changed) and the new
730 fan min (unconditionally) */
731 if (new_div != data->fan_div[nr]) {
732 /* Preserve the fan speed reading */
733 if (data->fan[nr] != 0xff) {
734 if (new_div > data->fan_div[nr])
735 data->fan[nr] >>= new_div - data->fan_div[nr];
736 else if (data->fan[nr] & 0x80)
737 data->fan[nr] = 0xff;
738 else
739 data->fan[nr] <<= data->fan_div[nr] - new_div;
740 }
741
742 dev_dbg(dev, "fan%u clock divider changed from %u to %u\n",
743 nr + 1, div_from_reg(data->fan_div[nr]),
744 div_from_reg(new_div));
745 data->fan_div[nr] = new_div;
746 w83627ehf_write_fan_div(data, nr);
747 /* Give the chip time to sample a new speed value */
748 data->last_updated = jiffies;
749 }
750 w83627ehf_write_value(data, W83627EHF_REG_FAN_MIN[nr],
751 data->fan_min[nr]);
752 mutex_unlock(&data->update_lock);
753
754 return count;
755 }
756
757 static struct sensor_device_attribute sda_fan_input[] = {
758 SENSOR_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0),
759 SENSOR_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1),
760 SENSOR_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2),
761 SENSOR_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3),
762 SENSOR_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 4),
763 };
764
765 static struct sensor_device_attribute sda_fan_alarm[] = {
766 SENSOR_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6),
767 SENSOR_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7),
768 SENSOR_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 11),
769 SENSOR_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 10),
770 SENSOR_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 23),
771 };
772
773 static struct sensor_device_attribute sda_fan_min[] = {
774 SENSOR_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan_min,
775 store_fan_min, 0),
776 SENSOR_ATTR(fan2_min, S_IWUSR | S_IRUGO, show_fan_min,
777 store_fan_min, 1),
778 SENSOR_ATTR(fan3_min, S_IWUSR | S_IRUGO, show_fan_min,
779 store_fan_min, 2),
780 SENSOR_ATTR(fan4_min, S_IWUSR | S_IRUGO, show_fan_min,
781 store_fan_min, 3),
782 SENSOR_ATTR(fan5_min, S_IWUSR | S_IRUGO, show_fan_min,
783 store_fan_min, 4),
784 };
785
786 static struct sensor_device_attribute sda_fan_div[] = {
787 SENSOR_ATTR(fan1_div, S_IRUGO, show_fan_div, NULL, 0),
788 SENSOR_ATTR(fan2_div, S_IRUGO, show_fan_div, NULL, 1),
789 SENSOR_ATTR(fan3_div, S_IRUGO, show_fan_div, NULL, 2),
790 SENSOR_ATTR(fan4_div, S_IRUGO, show_fan_div, NULL, 3),
791 SENSOR_ATTR(fan5_div, S_IRUGO, show_fan_div, NULL, 4),
792 };
793
794 #define show_temp1_reg(reg) \
795 static ssize_t \
796 show_##reg(struct device *dev, struct device_attribute *attr, \
797 char *buf) \
798 { \
799 struct w83627ehf_data *data = w83627ehf_update_device(dev); \
800 return sprintf(buf, "%d\n", temp1_from_reg(data->reg)); \
801 }
802 show_temp1_reg(temp1);
803 show_temp1_reg(temp1_max);
804 show_temp1_reg(temp1_max_hyst);
805
806 #define store_temp1_reg(REG, reg) \
807 static ssize_t \
808 store_temp1_##reg(struct device *dev, struct device_attribute *attr, \
809 const char *buf, size_t count) \
810 { \
811 struct w83627ehf_data *data = dev_get_drvdata(dev); \
812 long val = simple_strtol(buf, NULL, 10); \
813 \
814 mutex_lock(&data->update_lock); \
815 data->temp1_##reg = temp1_to_reg(val, -128000, 127000); \
816 w83627ehf_write_value(data, W83627EHF_REG_TEMP1_##REG, \
817 data->temp1_##reg); \
818 mutex_unlock(&data->update_lock); \
819 return count; \
820 }
821 store_temp1_reg(OVER, max);
822 store_temp1_reg(HYST, max_hyst);
823
824 #define show_temp_reg(reg) \
825 static ssize_t \
826 show_##reg(struct device *dev, struct device_attribute *attr, \
827 char *buf) \
828 { \
829 struct w83627ehf_data *data = w83627ehf_update_device(dev); \
830 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
831 int nr = sensor_attr->index; \
832 return sprintf(buf, "%d\n", \
833 LM75_TEMP_FROM_REG(data->reg[nr])); \
834 }
835 show_temp_reg(temp);
836 show_temp_reg(temp_max);
837 show_temp_reg(temp_max_hyst);
838
839 #define store_temp_reg(REG, reg) \
840 static ssize_t \
841 store_##reg(struct device *dev, struct device_attribute *attr, \
842 const char *buf, size_t count) \
843 { \
844 struct w83627ehf_data *data = dev_get_drvdata(dev); \
845 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
846 int nr = sensor_attr->index; \
847 long val = simple_strtol(buf, NULL, 10); \
848 \
849 mutex_lock(&data->update_lock); \
850 data->reg[nr] = LM75_TEMP_TO_REG(val); \
851 w83627ehf_write_value(data, W83627EHF_REG_TEMP_##REG[nr], \
852 data->reg[nr]); \
853 mutex_unlock(&data->update_lock); \
854 return count; \
855 }
856 store_temp_reg(OVER, temp_max);
857 store_temp_reg(HYST, temp_max_hyst);
858
859 static ssize_t
860 show_temp_type(struct device *dev, struct device_attribute *attr, char *buf)
861 {
862 struct w83627ehf_data *data = w83627ehf_update_device(dev);
863 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
864 int nr = sensor_attr->index;
865 return sprintf(buf, "%d\n", (int)data->temp_type[nr]);
866 }
867
868 static struct sensor_device_attribute sda_temp[] = {
869 SENSOR_ATTR(temp1_input, S_IRUGO, show_temp1, NULL, 0),
870 SENSOR_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 0),
871 SENSOR_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 1),
872 SENSOR_ATTR(temp1_max, S_IRUGO | S_IWUSR, show_temp1_max,
873 store_temp1_max, 0),
874 SENSOR_ATTR(temp2_max, S_IRUGO | S_IWUSR, show_temp_max,
875 store_temp_max, 0),
876 SENSOR_ATTR(temp3_max, S_IRUGO | S_IWUSR, show_temp_max,
877 store_temp_max, 1),
878 SENSOR_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, show_temp1_max_hyst,
879 store_temp1_max_hyst, 0),
880 SENSOR_ATTR(temp2_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
881 store_temp_max_hyst, 0),
882 SENSOR_ATTR(temp3_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
883 store_temp_max_hyst, 1),
884 SENSOR_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4),
885 SENSOR_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5),
886 SENSOR_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 13),
887 SENSOR_ATTR(temp1_type, S_IRUGO, show_temp_type, NULL, 0),
888 SENSOR_ATTR(temp2_type, S_IRUGO, show_temp_type, NULL, 1),
889 SENSOR_ATTR(temp3_type, S_IRUGO, show_temp_type, NULL, 2),
890 };
891
892 #define show_pwm_reg(reg) \
893 static ssize_t show_##reg (struct device *dev, struct device_attribute *attr, \
894 char *buf) \
895 { \
896 struct w83627ehf_data *data = w83627ehf_update_device(dev); \
897 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
898 int nr = sensor_attr->index; \
899 return sprintf(buf, "%d\n", data->reg[nr]); \
900 }
901
902 show_pwm_reg(pwm_mode)
903 show_pwm_reg(pwm_enable)
904 show_pwm_reg(pwm)
905
906 static ssize_t
907 store_pwm_mode(struct device *dev, struct device_attribute *attr,
908 const char *buf, size_t count)
909 {
910 struct w83627ehf_data *data = dev_get_drvdata(dev);
911 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
912 int nr = sensor_attr->index;
913 u32 val = simple_strtoul(buf, NULL, 10);
914 u16 reg;
915
916 if (val > 1)
917 return -EINVAL;
918 mutex_lock(&data->update_lock);
919 reg = w83627ehf_read_value(data, W83627EHF_REG_PWM_ENABLE[nr]);
920 data->pwm_mode[nr] = val;
921 reg &= ~(1 << W83627EHF_PWM_MODE_SHIFT[nr]);
922 if (!val)
923 reg |= 1 << W83627EHF_PWM_MODE_SHIFT[nr];
924 w83627ehf_write_value(data, W83627EHF_REG_PWM_ENABLE[nr], reg);
925 mutex_unlock(&data->update_lock);
926 return count;
927 }
928
929 static ssize_t
930 store_pwm(struct device *dev, struct device_attribute *attr,
931 const char *buf, size_t count)
932 {
933 struct w83627ehf_data *data = dev_get_drvdata(dev);
934 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
935 int nr = sensor_attr->index;
936 u32 val = SENSORS_LIMIT(simple_strtoul(buf, NULL, 10), 0, 255);
937
938 mutex_lock(&data->update_lock);
939 data->pwm[nr] = val;
940 w83627ehf_write_value(data, W83627EHF_REG_PWM[nr], val);
941 mutex_unlock(&data->update_lock);
942 return count;
943 }
944
945 static ssize_t
946 store_pwm_enable(struct device *dev, struct device_attribute *attr,
947 const char *buf, size_t count)
948 {
949 struct w83627ehf_data *data = dev_get_drvdata(dev);
950 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
951 int nr = sensor_attr->index;
952 u32 val = simple_strtoul(buf, NULL, 10);
953 u16 reg;
954
955 if (!val || (val > 2)) /* only modes 1 and 2 are supported */
956 return -EINVAL;
957 mutex_lock(&data->update_lock);
958 reg = w83627ehf_read_value(data, W83627EHF_REG_PWM_ENABLE[nr]);
959 data->pwm_enable[nr] = val;
960 reg &= ~(0x03 << W83627EHF_PWM_ENABLE_SHIFT[nr]);
961 reg |= (val - 1) << W83627EHF_PWM_ENABLE_SHIFT[nr];
962 w83627ehf_write_value(data, W83627EHF_REG_PWM_ENABLE[nr], reg);
963 mutex_unlock(&data->update_lock);
964 return count;
965 }
966
967
968 #define show_tol_temp(reg) \
969 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
970 char *buf) \
971 { \
972 struct w83627ehf_data *data = w83627ehf_update_device(dev); \
973 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
974 int nr = sensor_attr->index; \
975 return sprintf(buf, "%d\n", temp1_from_reg(data->reg[nr])); \
976 }
977
978 show_tol_temp(tolerance)
979 show_tol_temp(target_temp)
980
981 static ssize_t
982 store_target_temp(struct device *dev, struct device_attribute *attr,
983 const char *buf, size_t count)
984 {
985 struct w83627ehf_data *data = dev_get_drvdata(dev);
986 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
987 int nr = sensor_attr->index;
988 u8 val = temp1_to_reg(simple_strtoul(buf, NULL, 10), 0, 127000);
989
990 mutex_lock(&data->update_lock);
991 data->target_temp[nr] = val;
992 w83627ehf_write_value(data, W83627EHF_REG_TARGET[nr], val);
993 mutex_unlock(&data->update_lock);
994 return count;
995 }
996
997 static ssize_t
998 store_tolerance(struct device *dev, struct device_attribute *attr,
999 const char *buf, size_t count)
1000 {
1001 struct w83627ehf_data *data = dev_get_drvdata(dev);
1002 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1003 int nr = sensor_attr->index;
1004 u16 reg;
1005 /* Limit the temp to 0C - 15C */
1006 u8 val = temp1_to_reg(simple_strtoul(buf, NULL, 10), 0, 15000);
1007
1008 mutex_lock(&data->update_lock);
1009 reg = w83627ehf_read_value(data, W83627EHF_REG_TOLERANCE[nr]);
1010 data->tolerance[nr] = val;
1011 if (nr == 1)
1012 reg = (reg & 0x0f) | (val << 4);
1013 else
1014 reg = (reg & 0xf0) | val;
1015 w83627ehf_write_value(data, W83627EHF_REG_TOLERANCE[nr], reg);
1016 mutex_unlock(&data->update_lock);
1017 return count;
1018 }
1019
1020 static struct sensor_device_attribute sda_pwm[] = {
1021 SENSOR_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 0),
1022 SENSOR_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 1),
1023 SENSOR_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 2),
1024 SENSOR_ATTR(pwm4, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 3),
1025 };
1026
1027 static struct sensor_device_attribute sda_pwm_mode[] = {
1028 SENSOR_ATTR(pwm1_mode, S_IWUSR | S_IRUGO, show_pwm_mode,
1029 store_pwm_mode, 0),
1030 SENSOR_ATTR(pwm2_mode, S_IWUSR | S_IRUGO, show_pwm_mode,
1031 store_pwm_mode, 1),
1032 SENSOR_ATTR(pwm3_mode, S_IWUSR | S_IRUGO, show_pwm_mode,
1033 store_pwm_mode, 2),
1034 SENSOR_ATTR(pwm4_mode, S_IWUSR | S_IRUGO, show_pwm_mode,
1035 store_pwm_mode, 3),
1036 };
1037
1038 static struct sensor_device_attribute sda_pwm_enable[] = {
1039 SENSOR_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, show_pwm_enable,
1040 store_pwm_enable, 0),
1041 SENSOR_ATTR(pwm2_enable, S_IWUSR | S_IRUGO, show_pwm_enable,
1042 store_pwm_enable, 1),
1043 SENSOR_ATTR(pwm3_enable, S_IWUSR | S_IRUGO, show_pwm_enable,
1044 store_pwm_enable, 2),
1045 SENSOR_ATTR(pwm4_enable, S_IWUSR | S_IRUGO, show_pwm_enable,
1046 store_pwm_enable, 3),
1047 };
1048
1049 static struct sensor_device_attribute sda_target_temp[] = {
1050 SENSOR_ATTR(pwm1_target, S_IWUSR | S_IRUGO, show_target_temp,
1051 store_target_temp, 0),
1052 SENSOR_ATTR(pwm2_target, S_IWUSR | S_IRUGO, show_target_temp,
1053 store_target_temp, 1),
1054 SENSOR_ATTR(pwm3_target, S_IWUSR | S_IRUGO, show_target_temp,
1055 store_target_temp, 2),
1056 SENSOR_ATTR(pwm4_target, S_IWUSR | S_IRUGO, show_target_temp,
1057 store_target_temp, 3),
1058 };
1059
1060 static struct sensor_device_attribute sda_tolerance[] = {
1061 SENSOR_ATTR(pwm1_tolerance, S_IWUSR | S_IRUGO, show_tolerance,
1062 store_tolerance, 0),
1063 SENSOR_ATTR(pwm2_tolerance, S_IWUSR | S_IRUGO, show_tolerance,
1064 store_tolerance, 1),
1065 SENSOR_ATTR(pwm3_tolerance, S_IWUSR | S_IRUGO, show_tolerance,
1066 store_tolerance, 2),
1067 SENSOR_ATTR(pwm4_tolerance, S_IWUSR | S_IRUGO, show_tolerance,
1068 store_tolerance, 3),
1069 };
1070
1071 /* Smart Fan registers */
1072
1073 #define fan_functions(reg, REG) \
1074 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
1075 char *buf) \
1076 { \
1077 struct w83627ehf_data *data = w83627ehf_update_device(dev); \
1078 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
1079 int nr = sensor_attr->index; \
1080 return sprintf(buf, "%d\n", data->reg[nr]); \
1081 }\
1082 static ssize_t \
1083 store_##reg(struct device *dev, struct device_attribute *attr, \
1084 const char *buf, size_t count) \
1085 {\
1086 struct w83627ehf_data *data = dev_get_drvdata(dev); \
1087 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
1088 int nr = sensor_attr->index; \
1089 u32 val = SENSORS_LIMIT(simple_strtoul(buf, NULL, 10), 1, 255); \
1090 mutex_lock(&data->update_lock); \
1091 data->reg[nr] = val; \
1092 w83627ehf_write_value(data, W83627EHF_REG_##REG[nr], val); \
1093 mutex_unlock(&data->update_lock); \
1094 return count; \
1095 }
1096
1097 fan_functions(fan_min_output, FAN_MIN_OUTPUT)
1098
1099 #define fan_time_functions(reg, REG) \
1100 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
1101 char *buf) \
1102 { \
1103 struct w83627ehf_data *data = w83627ehf_update_device(dev); \
1104 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
1105 int nr = sensor_attr->index; \
1106 return sprintf(buf, "%d\n", \
1107 step_time_from_reg(data->reg[nr], data->pwm_mode[nr])); \
1108 } \
1109 \
1110 static ssize_t \
1111 store_##reg(struct device *dev, struct device_attribute *attr, \
1112 const char *buf, size_t count) \
1113 { \
1114 struct w83627ehf_data *data = dev_get_drvdata(dev); \
1115 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
1116 int nr = sensor_attr->index; \
1117 u8 val = step_time_to_reg(simple_strtoul(buf, NULL, 10), \
1118 data->pwm_mode[nr]); \
1119 mutex_lock(&data->update_lock); \
1120 data->reg[nr] = val; \
1121 w83627ehf_write_value(data, W83627EHF_REG_##REG[nr], val); \
1122 mutex_unlock(&data->update_lock); \
1123 return count; \
1124 } \
1125
1126 fan_time_functions(fan_stop_time, FAN_STOP_TIME)
1127
1128 static ssize_t show_name(struct device *dev, struct device_attribute *attr,
1129 char *buf)
1130 {
1131 struct w83627ehf_data *data = dev_get_drvdata(dev);
1132
1133 return sprintf(buf, "%s\n", data->name);
1134 }
1135 static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
1136
1137 static struct sensor_device_attribute sda_sf3_arrays_fan4[] = {
1138 SENSOR_ATTR(pwm4_stop_time, S_IWUSR | S_IRUGO, show_fan_stop_time,
1139 store_fan_stop_time, 3),
1140 SENSOR_ATTR(pwm4_min_output, S_IWUSR | S_IRUGO, show_fan_min_output,
1141 store_fan_min_output, 3),
1142 };
1143
1144 static struct sensor_device_attribute sda_sf3_arrays[] = {
1145 SENSOR_ATTR(pwm1_stop_time, S_IWUSR | S_IRUGO, show_fan_stop_time,
1146 store_fan_stop_time, 0),
1147 SENSOR_ATTR(pwm2_stop_time, S_IWUSR | S_IRUGO, show_fan_stop_time,
1148 store_fan_stop_time, 1),
1149 SENSOR_ATTR(pwm3_stop_time, S_IWUSR | S_IRUGO, show_fan_stop_time,
1150 store_fan_stop_time, 2),
1151 SENSOR_ATTR(pwm1_min_output, S_IWUSR | S_IRUGO, show_fan_min_output,
1152 store_fan_min_output, 0),
1153 SENSOR_ATTR(pwm2_min_output, S_IWUSR | S_IRUGO, show_fan_min_output,
1154 store_fan_min_output, 1),
1155 SENSOR_ATTR(pwm3_min_output, S_IWUSR | S_IRUGO, show_fan_min_output,
1156 store_fan_min_output, 2),
1157 };
1158
1159 static ssize_t
1160 show_vid(struct device *dev, struct device_attribute *attr, char *buf)
1161 {
1162 struct w83627ehf_data *data = dev_get_drvdata(dev);
1163 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
1164 }
1165 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
1166
1167 /*
1168 * Driver and device management
1169 */
1170
1171 static void w83627ehf_device_remove_files(struct device *dev)
1172 {
1173 /* some entries in the following arrays may not have been used in
1174 * device_create_file(), but device_remove_file() will ignore them */
1175 int i;
1176 struct w83627ehf_data *data = dev_get_drvdata(dev);
1177
1178 for (i = 0; i < ARRAY_SIZE(sda_sf3_arrays); i++)
1179 device_remove_file(dev, &sda_sf3_arrays[i].dev_attr);
1180 for (i = 0; i < ARRAY_SIZE(sda_sf3_arrays_fan4); i++)
1181 device_remove_file(dev, &sda_sf3_arrays_fan4[i].dev_attr);
1182 for (i = 0; i < data->in_num; i++) {
1183 device_remove_file(dev, &sda_in_input[i].dev_attr);
1184 device_remove_file(dev, &sda_in_alarm[i].dev_attr);
1185 device_remove_file(dev, &sda_in_min[i].dev_attr);
1186 device_remove_file(dev, &sda_in_max[i].dev_attr);
1187 }
1188 for (i = 0; i < 5; i++) {
1189 device_remove_file(dev, &sda_fan_input[i].dev_attr);
1190 device_remove_file(dev, &sda_fan_alarm[i].dev_attr);
1191 device_remove_file(dev, &sda_fan_div[i].dev_attr);
1192 device_remove_file(dev, &sda_fan_min[i].dev_attr);
1193 }
1194 for (i = 0; i < 4; i++) {
1195 device_remove_file(dev, &sda_pwm[i].dev_attr);
1196 device_remove_file(dev, &sda_pwm_mode[i].dev_attr);
1197 device_remove_file(dev, &sda_pwm_enable[i].dev_attr);
1198 device_remove_file(dev, &sda_target_temp[i].dev_attr);
1199 device_remove_file(dev, &sda_tolerance[i].dev_attr);
1200 }
1201 for (i = 0; i < ARRAY_SIZE(sda_temp); i++)
1202 device_remove_file(dev, &sda_temp[i].dev_attr);
1203
1204 device_remove_file(dev, &dev_attr_name);
1205 device_remove_file(dev, &dev_attr_cpu0_vid);
1206 }
1207
1208 /* Get the monitoring functions started */
1209 static inline void __devinit w83627ehf_init_device(struct w83627ehf_data *data)
1210 {
1211 int i;
1212 u8 tmp, diode;
1213
1214 /* Start monitoring is needed */
1215 tmp = w83627ehf_read_value(data, W83627EHF_REG_CONFIG);
1216 if (!(tmp & 0x01))
1217 w83627ehf_write_value(data, W83627EHF_REG_CONFIG,
1218 tmp | 0x01);
1219
1220 /* Enable temp2 and temp3 if needed */
1221 for (i = 0; i < 2; i++) {
1222 tmp = w83627ehf_read_value(data,
1223 W83627EHF_REG_TEMP_CONFIG[i]);
1224 if (tmp & 0x01)
1225 w83627ehf_write_value(data,
1226 W83627EHF_REG_TEMP_CONFIG[i],
1227 tmp & 0xfe);
1228 }
1229
1230 /* Enable VBAT monitoring if needed */
1231 tmp = w83627ehf_read_value(data, W83627EHF_REG_VBAT);
1232 if (!(tmp & 0x01))
1233 w83627ehf_write_value(data, W83627EHF_REG_VBAT, tmp | 0x01);
1234
1235 /* Get thermal sensor types */
1236 diode = w83627ehf_read_value(data, W83627EHF_REG_DIODE);
1237 for (i = 0; i < 3; i++) {
1238 if ((tmp & (0x02 << i)))
1239 data->temp_type[i] = (diode & (0x10 << i)) ? 1 : 2;
1240 else
1241 data->temp_type[i] = 4; /* thermistor */
1242 }
1243 }
1244
1245 static int __devinit w83627ehf_probe(struct platform_device *pdev)
1246 {
1247 struct device *dev = &pdev->dev;
1248 struct w83627ehf_sio_data *sio_data = dev->platform_data;
1249 struct w83627ehf_data *data;
1250 struct resource *res;
1251 u8 fan4pin, fan5pin, en_vrm10;
1252 int i, err = 0;
1253
1254 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
1255 if (!request_region(res->start, IOREGION_LENGTH, DRVNAME)) {
1256 err = -EBUSY;
1257 dev_err(dev, "Failed to request region 0x%lx-0x%lx\n",
1258 (unsigned long)res->start,
1259 (unsigned long)res->start + IOREGION_LENGTH - 1);
1260 goto exit;
1261 }
1262
1263 if (!(data = kzalloc(sizeof(struct w83627ehf_data), GFP_KERNEL))) {
1264 err = -ENOMEM;
1265 goto exit_release;
1266 }
1267
1268 data->addr = res->start;
1269 mutex_init(&data->lock);
1270 mutex_init(&data->update_lock);
1271 data->name = w83627ehf_device_names[sio_data->kind];
1272 platform_set_drvdata(pdev, data);
1273
1274 /* 627EHG and 627EHF have 10 voltage inputs; DHG has 9 */
1275 data->in_num = (sio_data->kind == w83627dhg) ? 9 : 10;
1276
1277 /* Initialize the chip */
1278 w83627ehf_init_device(data);
1279
1280 data->vrm = vid_which_vrm();
1281 superio_enter(sio_data->sioreg);
1282 /* Read VID value */
1283 superio_select(sio_data->sioreg, W83627EHF_LD_HWM);
1284 if (superio_inb(sio_data->sioreg, SIO_REG_VID_CTRL) & 0x80) {
1285 /* Set VID input sensibility if needed. In theory the BIOS
1286 should have set it, but in practice it's not always the
1287 case. We only do it for the W83627EHF/EHG because the
1288 W83627DHG is more complex in this respect. */
1289 if (sio_data->kind == w83627ehf) {
1290 en_vrm10 = superio_inb(sio_data->sioreg,
1291 SIO_REG_EN_VRM10);
1292 if ((en_vrm10 & 0x08) && data->vrm == 90) {
1293 dev_warn(dev, "Setting VID input voltage to "
1294 "TTL\n");
1295 superio_outb(sio_data->sioreg, SIO_REG_EN_VRM10,
1296 en_vrm10 & ~0x08);
1297 } else if (!(en_vrm10 & 0x08) && data->vrm == 100) {
1298 dev_warn(dev, "Setting VID input voltage to "
1299 "VRM10\n");
1300 superio_outb(sio_data->sioreg, SIO_REG_EN_VRM10,
1301 en_vrm10 | 0x08);
1302 }
1303 }
1304
1305 data->vid = superio_inb(sio_data->sioreg, SIO_REG_VID_DATA);
1306 if (sio_data->kind == w83627ehf) /* 6 VID pins only */
1307 data->vid &= 0x3f;
1308
1309 err = device_create_file(dev, &dev_attr_cpu0_vid);
1310 if (err)
1311 goto exit_release;
1312 } else {
1313 dev_info(dev, "VID pins in output mode, CPU VID not "
1314 "available\n");
1315 }
1316
1317 /* fan4 and fan5 share some pins with the GPIO and serial flash */
1318
1319 fan5pin = superio_inb(sio_data->sioreg, 0x24) & 0x2;
1320 fan4pin = superio_inb(sio_data->sioreg, 0x29) & 0x6;
1321 superio_exit(sio_data->sioreg);
1322
1323 /* It looks like fan4 and fan5 pins can be alternatively used
1324 as fan on/off switches, but fan5 control is write only :/
1325 We assume that if the serial interface is disabled, designers
1326 connected fan5 as input unless they are emitting log 1, which
1327 is not the default. */
1328
1329 data->has_fan = 0x07; /* fan1, fan2 and fan3 */
1330 i = w83627ehf_read_value(data, W83627EHF_REG_FANDIV1);
1331 if ((i & (1 << 2)) && (!fan4pin))
1332 data->has_fan |= (1 << 3);
1333 if (!(i & (1 << 1)) && (!fan5pin))
1334 data->has_fan |= (1 << 4);
1335
1336 /* Read fan clock dividers immediately */
1337 w83627ehf_update_fan_div(data);
1338
1339 /* Register sysfs hooks */
1340 for (i = 0; i < ARRAY_SIZE(sda_sf3_arrays); i++)
1341 if ((err = device_create_file(dev,
1342 &sda_sf3_arrays[i].dev_attr)))
1343 goto exit_remove;
1344
1345 /* if fan4 is enabled create the sf3 files for it */
1346 if (data->has_fan & (1 << 3))
1347 for (i = 0; i < ARRAY_SIZE(sda_sf3_arrays_fan4); i++) {
1348 if ((err = device_create_file(dev,
1349 &sda_sf3_arrays_fan4[i].dev_attr)))
1350 goto exit_remove;
1351 }
1352
1353 for (i = 0; i < data->in_num; i++)
1354 if ((err = device_create_file(dev, &sda_in_input[i].dev_attr))
1355 || (err = device_create_file(dev,
1356 &sda_in_alarm[i].dev_attr))
1357 || (err = device_create_file(dev,
1358 &sda_in_min[i].dev_attr))
1359 || (err = device_create_file(dev,
1360 &sda_in_max[i].dev_attr)))
1361 goto exit_remove;
1362
1363 for (i = 0; i < 5; i++) {
1364 if (data->has_fan & (1 << i)) {
1365 if ((err = device_create_file(dev,
1366 &sda_fan_input[i].dev_attr))
1367 || (err = device_create_file(dev,
1368 &sda_fan_alarm[i].dev_attr))
1369 || (err = device_create_file(dev,
1370 &sda_fan_div[i].dev_attr))
1371 || (err = device_create_file(dev,
1372 &sda_fan_min[i].dev_attr)))
1373 goto exit_remove;
1374 if (i < 4 && /* w83627ehf only has 4 pwm */
1375 ((err = device_create_file(dev,
1376 &sda_pwm[i].dev_attr))
1377 || (err = device_create_file(dev,
1378 &sda_pwm_mode[i].dev_attr))
1379 || (err = device_create_file(dev,
1380 &sda_pwm_enable[i].dev_attr))
1381 || (err = device_create_file(dev,
1382 &sda_target_temp[i].dev_attr))
1383 || (err = device_create_file(dev,
1384 &sda_tolerance[i].dev_attr))))
1385 goto exit_remove;
1386 }
1387 }
1388
1389 for (i = 0; i < ARRAY_SIZE(sda_temp); i++)
1390 if ((err = device_create_file(dev, &sda_temp[i].dev_attr)))
1391 goto exit_remove;
1392
1393 err = device_create_file(dev, &dev_attr_name);
1394 if (err)
1395 goto exit_remove;
1396
1397 data->hwmon_dev = hwmon_device_register(dev);
1398 if (IS_ERR(data->hwmon_dev)) {
1399 err = PTR_ERR(data->hwmon_dev);
1400 goto exit_remove;
1401 }
1402
1403 return 0;
1404
1405 exit_remove:
1406 w83627ehf_device_remove_files(dev);
1407 kfree(data);
1408 platform_set_drvdata(pdev, NULL);
1409 exit_release:
1410 release_region(res->start, IOREGION_LENGTH);
1411 exit:
1412 return err;
1413 }
1414
1415 static int __devexit w83627ehf_remove(struct platform_device *pdev)
1416 {
1417 struct w83627ehf_data *data = platform_get_drvdata(pdev);
1418
1419 hwmon_device_unregister(data->hwmon_dev);
1420 w83627ehf_device_remove_files(&pdev->dev);
1421 release_region(data->addr, IOREGION_LENGTH);
1422 platform_set_drvdata(pdev, NULL);
1423 kfree(data);
1424
1425 return 0;
1426 }
1427
1428 static struct platform_driver w83627ehf_driver = {
1429 .driver = {
1430 .owner = THIS_MODULE,
1431 .name = DRVNAME,
1432 },
1433 .probe = w83627ehf_probe,
1434 .remove = __devexit_p(w83627ehf_remove),
1435 };
1436
1437 /* w83627ehf_find() looks for a '627 in the Super-I/O config space */
1438 static int __init w83627ehf_find(int sioaddr, unsigned short *addr,
1439 struct w83627ehf_sio_data *sio_data)
1440 {
1441 static const char __initdata sio_name_W83627EHF[] = "W83627EHF";
1442 static const char __initdata sio_name_W83627EHG[] = "W83627EHG";
1443 static const char __initdata sio_name_W83627DHG[] = "W83627DHG";
1444
1445 u16 val;
1446 const char *sio_name;
1447
1448 superio_enter(sioaddr);
1449
1450 if (force_id)
1451 val = force_id;
1452 else
1453 val = (superio_inb(sioaddr, SIO_REG_DEVID) << 8)
1454 | superio_inb(sioaddr, SIO_REG_DEVID + 1);
1455 switch (val & SIO_ID_MASK) {
1456 case SIO_W83627EHF_ID:
1457 sio_data->kind = w83627ehf;
1458 sio_name = sio_name_W83627EHF;
1459 break;
1460 case SIO_W83627EHG_ID:
1461 sio_data->kind = w83627ehf;
1462 sio_name = sio_name_W83627EHG;
1463 break;
1464 case SIO_W83627DHG_ID:
1465 sio_data->kind = w83627dhg;
1466 sio_name = sio_name_W83627DHG;
1467 break;
1468 default:
1469 if (val != 0xffff)
1470 pr_debug(DRVNAME ": unsupported chip ID: 0x%04x\n",
1471 val);
1472 superio_exit(sioaddr);
1473 return -ENODEV;
1474 }
1475
1476 /* We have a known chip, find the HWM I/O address */
1477 superio_select(sioaddr, W83627EHF_LD_HWM);
1478 val = (superio_inb(sioaddr, SIO_REG_ADDR) << 8)
1479 | superio_inb(sioaddr, SIO_REG_ADDR + 1);
1480 *addr = val & IOREGION_ALIGNMENT;
1481 if (*addr == 0) {
1482 printk(KERN_ERR DRVNAME ": Refusing to enable a Super-I/O "
1483 "device with a base I/O port 0.\n");
1484 superio_exit(sioaddr);
1485 return -ENODEV;
1486 }
1487
1488 /* Activate logical device if needed */
1489 val = superio_inb(sioaddr, SIO_REG_ENABLE);
1490 if (!(val & 0x01)) {
1491 printk(KERN_WARNING DRVNAME ": Forcibly enabling Super-I/O. "
1492 "Sensor is probably unusable.\n");
1493 superio_outb(sioaddr, SIO_REG_ENABLE, val | 0x01);
1494 }
1495
1496 superio_exit(sioaddr);
1497 pr_info(DRVNAME ": Found %s chip at %#x\n", sio_name, *addr);
1498 sio_data->sioreg = sioaddr;
1499
1500 return 0;
1501 }
1502
1503 /* when Super-I/O functions move to a separate file, the Super-I/O
1504 * bus will manage the lifetime of the device and this module will only keep
1505 * track of the w83627ehf driver. But since we platform_device_alloc(), we
1506 * must keep track of the device */
1507 static struct platform_device *pdev;
1508
1509 static int __init sensors_w83627ehf_init(void)
1510 {
1511 int err;
1512 unsigned short address;
1513 struct resource res;
1514 struct w83627ehf_sio_data sio_data;
1515
1516 /* initialize sio_data->kind and sio_data->sioreg.
1517 *
1518 * when Super-I/O functions move to a separate file, the Super-I/O
1519 * driver will probe 0x2e and 0x4e and auto-detect the presence of a
1520 * w83627ehf hardware monitor, and call probe() */
1521 if (w83627ehf_find(0x2e, &address, &sio_data) &&
1522 w83627ehf_find(0x4e, &address, &sio_data))
1523 return -ENODEV;
1524
1525 err = platform_driver_register(&w83627ehf_driver);
1526 if (err)
1527 goto exit;
1528
1529 if (!(pdev = platform_device_alloc(DRVNAME, address))) {
1530 err = -ENOMEM;
1531 printk(KERN_ERR DRVNAME ": Device allocation failed\n");
1532 goto exit_unregister;
1533 }
1534
1535 err = platform_device_add_data(pdev, &sio_data,
1536 sizeof(struct w83627ehf_sio_data));
1537 if (err) {
1538 printk(KERN_ERR DRVNAME ": Platform data allocation failed\n");
1539 goto exit_device_put;
1540 }
1541
1542 memset(&res, 0, sizeof(res));
1543 res.name = DRVNAME;
1544 res.start = address + IOREGION_OFFSET;
1545 res.end = address + IOREGION_OFFSET + IOREGION_LENGTH - 1;
1546 res.flags = IORESOURCE_IO;
1547 err = platform_device_add_resources(pdev, &res, 1);
1548 if (err) {
1549 printk(KERN_ERR DRVNAME ": Device resource addition failed "
1550 "(%d)\n", err);
1551 goto exit_device_put;
1552 }
1553
1554 /* platform_device_add calls probe() */
1555 err = platform_device_add(pdev);
1556 if (err) {
1557 printk(KERN_ERR DRVNAME ": Device addition failed (%d)\n",
1558 err);
1559 goto exit_device_put;
1560 }
1561
1562 return 0;
1563
1564 exit_device_put:
1565 platform_device_put(pdev);
1566 exit_unregister:
1567 platform_driver_unregister(&w83627ehf_driver);
1568 exit:
1569 return err;
1570 }
1571
1572 static void __exit sensors_w83627ehf_exit(void)
1573 {
1574 platform_device_unregister(pdev);
1575 platform_driver_unregister(&w83627ehf_driver);
1576 }
1577
1578 MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>");
1579 MODULE_DESCRIPTION("W83627EHF driver");
1580 MODULE_LICENSE("GPL");
1581
1582 module_init(sensors_w83627ehf_init);
1583 module_exit(sensors_w83627ehf_exit);
Support for the Chinese Samsung S3C2440 based development boards