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linux/audit.h: move ptrace.h include to kernel header
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / hwmon / w83627ehf.c
blob0e8ffd6059a034614e281a67aa4e4f026f1c5f02
1 /*
2 * w83627ehf - Driver for the hardware monitoring functionality of
3 * the Winbond W83627EHF Super-I/O chip
4 * Copyright (C) 2005-2012 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 * Daniel J Blueman <daniel.blueman@gmail.com>
9 * Copyright (C) 2010 Sheng-Yuan Huang (Nuvoton) (PS00)
10 *
11 * Shamelessly ripped from the w83627hf driver
12 * Copyright (C) 2003 Mark Studebaker
13 *
14 * Thanks to Leon Moonen, Steve Cliffe and Grant Coady for their help
15 * in testing and debugging this driver.
16 *
17 * This driver also supports the W83627EHG, which is the lead-free
18 * version of the W83627EHF.
19 *
20 * This program is free software; you can redistribute it and/or modify
21 * it under the terms of the GNU General Public License as published by
22 * the Free Software Foundation; either version 2 of the License, or
23 * (at your option) any later version.
24 *
25 * This program is distributed in the hope that it will be useful,
26 * but WITHOUT ANY WARRANTY; without even the implied warranty of
27 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
28 * GNU General Public License for more details.
29 *
30 * You should have received a copy of the GNU General Public License
31 * along with this program; if not, write to the Free Software
32 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
33 *
34 * Supports the following chips:
35 *
36 * Chip #vin #fan #pwm #temp chip IDs man ID
37 * w83627ehf 10 5 4 3 0x8850 0x88 0x5ca3
38 * 0x8860 0xa1
39 * w83627dhg 9 5 4 3 0xa020 0xc1 0x5ca3
40 * w83627dhg-p 9 5 4 3 0xb070 0xc1 0x5ca3
41 * w83627uhg 8 2 2 3 0xa230 0xc1 0x5ca3
42 * w83667hg 9 5 3 3 0xa510 0xc1 0x5ca3
43 * w83667hg-b 9 5 3 4 0xb350 0xc1 0x5ca3
44 * nct6775f 9 4 3 9 0xb470 0xc1 0x5ca3
45 * nct6776f 9 5 3 9 0xC330 0xc1 0x5ca3
46 */
47
48 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
49
50 #include <linux/module.h>
51 #include <linux/init.h>
52 #include <linux/slab.h>
53 #include <linux/jiffies.h>
54 #include <linux/platform_device.h>
55 #include <linux/hwmon.h>
56 #include <linux/hwmon-sysfs.h>
57 #include <linux/hwmon-vid.h>
58 #include <linux/err.h>
59 #include <linux/mutex.h>
60 #include <linux/acpi.h>
61 #include <linux/io.h>
62 #include "lm75.h"
63
64 enum kinds {
65 w83627ehf, w83627dhg, w83627dhg_p, w83627uhg,
66 w83667hg, w83667hg_b, nct6775, nct6776,
67 };
68
69 /* used to set data->name = w83627ehf_device_names[data->sio_kind] */
70 static const char * const w83627ehf_device_names[] = {
71 "w83627ehf",
72 "w83627dhg",
73 "w83627dhg",
74 "w83627uhg",
75 "w83667hg",
76 "w83667hg",
77 "nct6775",
78 "nct6776",
79 };
80
81 static unsigned short force_id;
82 module_param(force_id, ushort, 0);
83 MODULE_PARM_DESC(force_id, "Override the detected device ID");
84
85 static unsigned short fan_debounce;
86 module_param(fan_debounce, ushort, 0);
87 MODULE_PARM_DESC(fan_debounce, "Enable debouncing for fan RPM signal");
88
89 #define DRVNAME "w83627ehf"
90
91 /*
92 * Super-I/O constants and functions
93 */
94
95 #define W83627EHF_LD_HWM 0x0b
96 #define W83667HG_LD_VID 0x0d
97
98 #define SIO_REG_LDSEL 0x07 /* Logical device select */
99 #define SIO_REG_DEVID 0x20 /* Device ID (2 bytes) */
100 #define SIO_REG_EN_VRM10 0x2C /* GPIO3, GPIO4 selection */
101 #define SIO_REG_ENABLE 0x30 /* Logical device enable */
102 #define SIO_REG_ADDR 0x60 /* Logical device address (2 bytes) */
103 #define SIO_REG_VID_CTRL 0xF0 /* VID control */
104 #define SIO_REG_VID_DATA 0xF1 /* VID data */
105
106 #define SIO_W83627EHF_ID 0x8850
107 #define SIO_W83627EHG_ID 0x8860
108 #define SIO_W83627DHG_ID 0xa020
109 #define SIO_W83627DHG_P_ID 0xb070
110 #define SIO_W83627UHG_ID 0xa230
111 #define SIO_W83667HG_ID 0xa510
112 #define SIO_W83667HG_B_ID 0xb350
113 #define SIO_NCT6775_ID 0xb470
114 #define SIO_NCT6776_ID 0xc330
115 #define SIO_ID_MASK 0xFFF0
116
117 static inline void
118 superio_outb(int ioreg, int reg, int val)
119 {
120 outb(reg, ioreg);
121 outb(val, ioreg + 1);
122 }
123
124 static inline int
125 superio_inb(int ioreg, int reg)
126 {
127 outb(reg, ioreg);
128 return inb(ioreg + 1);
129 }
130
131 static inline void
132 superio_select(int ioreg, int ld)
133 {
134 outb(SIO_REG_LDSEL, ioreg);
135 outb(ld, ioreg + 1);
136 }
137
138 static inline void
139 superio_enter(int ioreg)
140 {
141 outb(0x87, ioreg);
142 outb(0x87, ioreg);
143 }
144
145 static inline void
146 superio_exit(int ioreg)
147 {
148 outb(0xaa, ioreg);
149 outb(0x02, ioreg);
150 outb(0x02, ioreg + 1);
151 }
152
153 /*
154 * ISA constants
155 */
156
157 #define IOREGION_ALIGNMENT (~7)
158 #define IOREGION_OFFSET 5
159 #define IOREGION_LENGTH 2
160 #define ADDR_REG_OFFSET 0
161 #define DATA_REG_OFFSET 1
162
163 #define W83627EHF_REG_BANK 0x4E
164 #define W83627EHF_REG_CONFIG 0x40
165
166 /*
167 * Not currently used:
168 * REG_MAN_ID has the value 0x5ca3 for all supported chips.
169 * REG_CHIP_ID == 0x88/0xa1/0xc1 depending on chip model.
170 * REG_MAN_ID is at port 0x4f
171 * REG_CHIP_ID is at port 0x58
172 */
173
174 static const u16 W83627EHF_REG_FAN[] = { 0x28, 0x29, 0x2a, 0x3f, 0x553 };
175 static const u16 W83627EHF_REG_FAN_MIN[] = { 0x3b, 0x3c, 0x3d, 0x3e, 0x55c };
176
177 /* The W83627EHF registers for nr=7,8,9 are in bank 5 */
178 #define W83627EHF_REG_IN_MAX(nr) ((nr < 7) ? (0x2b + (nr) * 2) : \
179 (0x554 + (((nr) - 7) * 2)))
180 #define W83627EHF_REG_IN_MIN(nr) ((nr < 7) ? (0x2c + (nr) * 2) : \
181 (0x555 + (((nr) - 7) * 2)))
182 #define W83627EHF_REG_IN(nr) ((nr < 7) ? (0x20 + (nr)) : \
183 (0x550 + (nr) - 7))
184
185 static const u16 W83627EHF_REG_TEMP[] = { 0x27, 0x150, 0x250, 0x7e };
186 static const u16 W83627EHF_REG_TEMP_HYST[] = { 0x3a, 0x153, 0x253, 0 };
187 static const u16 W83627EHF_REG_TEMP_OVER[] = { 0x39, 0x155, 0x255, 0 };
188 static const u16 W83627EHF_REG_TEMP_CONFIG[] = { 0, 0x152, 0x252, 0 };
189
190 /* Fan clock dividers are spread over the following five registers */
191 #define W83627EHF_REG_FANDIV1 0x47
192 #define W83627EHF_REG_FANDIV2 0x4B
193 #define W83627EHF_REG_VBAT 0x5D
194 #define W83627EHF_REG_DIODE 0x59
195 #define W83627EHF_REG_SMI_OVT 0x4C
196
197 /* NCT6775F has its own fan divider registers */
198 #define NCT6775_REG_FANDIV1 0x506
199 #define NCT6775_REG_FANDIV2 0x507
200 #define NCT6775_REG_FAN_DEBOUNCE 0xf0
201
202 #define W83627EHF_REG_ALARM1 0x459
203 #define W83627EHF_REG_ALARM2 0x45A
204 #define W83627EHF_REG_ALARM3 0x45B
205
206 #define W83627EHF_REG_CASEOPEN_DET 0x42 /* SMI STATUS #2 */
207 #define W83627EHF_REG_CASEOPEN_CLR 0x46 /* SMI MASK #3 */
208
209 /* SmartFan registers */
210 #define W83627EHF_REG_FAN_STEPUP_TIME 0x0f
211 #define W83627EHF_REG_FAN_STEPDOWN_TIME 0x0e
212
213 /* DC or PWM output fan configuration */
214 static const u8 W83627EHF_REG_PWM_ENABLE[] = {
215 0x04, /* SYS FAN0 output mode and PWM mode */
216 0x04, /* CPU FAN0 output mode and PWM mode */
217 0x12, /* AUX FAN mode */
218 0x62, /* CPU FAN1 mode */
219 };
220
221 static const u8 W83627EHF_PWM_MODE_SHIFT[] = { 0, 1, 0, 6 };
222 static const u8 W83627EHF_PWM_ENABLE_SHIFT[] = { 2, 4, 1, 4 };
223
224 /* FAN Duty Cycle, be used to control */
225 static const u16 W83627EHF_REG_PWM[] = { 0x01, 0x03, 0x11, 0x61 };
226 static const u16 W83627EHF_REG_TARGET[] = { 0x05, 0x06, 0x13, 0x63 };
227 static const u8 W83627EHF_REG_TOLERANCE[] = { 0x07, 0x07, 0x14, 0x62 };
228
229 /* Advanced Fan control, some values are common for all fans */
230 static const u16 W83627EHF_REG_FAN_START_OUTPUT[] = { 0x0a, 0x0b, 0x16, 0x65 };
231 static const u16 W83627EHF_REG_FAN_STOP_OUTPUT[] = { 0x08, 0x09, 0x15, 0x64 };
232 static const u16 W83627EHF_REG_FAN_STOP_TIME[] = { 0x0c, 0x0d, 0x17, 0x66 };
233
234 static const u16 W83627EHF_REG_FAN_MAX_OUTPUT_COMMON[]
235 = { 0xff, 0x67, 0xff, 0x69 };
236 static const u16 W83627EHF_REG_FAN_STEP_OUTPUT_COMMON[]
237 = { 0xff, 0x68, 0xff, 0x6a };
238
239 static const u16 W83627EHF_REG_FAN_MAX_OUTPUT_W83667_B[] = { 0x67, 0x69, 0x6b };
240 static const u16 W83627EHF_REG_FAN_STEP_OUTPUT_W83667_B[]
241 = { 0x68, 0x6a, 0x6c };
242
243 static const u16 W83627EHF_REG_TEMP_OFFSET[] = { 0x454, 0x455, 0x456 };
244
245 static const u16 NCT6775_REG_TARGET[] = { 0x101, 0x201, 0x301 };
246 static const u16 NCT6775_REG_FAN_MODE[] = { 0x102, 0x202, 0x302 };
247 static const u16 NCT6775_REG_FAN_STOP_OUTPUT[] = { 0x105, 0x205, 0x305 };
248 static const u16 NCT6775_REG_FAN_START_OUTPUT[] = { 0x106, 0x206, 0x306 };
249 static const u16 NCT6775_REG_FAN_STOP_TIME[] = { 0x107, 0x207, 0x307 };
250 static const u16 NCT6775_REG_PWM[] = { 0x109, 0x209, 0x309 };
251 static const u16 NCT6775_REG_FAN_MAX_OUTPUT[] = { 0x10a, 0x20a, 0x30a };
252 static const u16 NCT6775_REG_FAN_STEP_OUTPUT[] = { 0x10b, 0x20b, 0x30b };
253 static const u16 NCT6775_REG_FAN[] = { 0x630, 0x632, 0x634, 0x636, 0x638 };
254 static const u16 NCT6776_REG_FAN_MIN[] = { 0x63a, 0x63c, 0x63e, 0x640, 0x642};
255
256 static const u16 NCT6775_REG_TEMP[]
257 = { 0x27, 0x150, 0x250, 0x73, 0x75, 0x77, 0x62b, 0x62c, 0x62d };
258 static const u16 NCT6775_REG_TEMP_CONFIG[]
259 = { 0, 0x152, 0x252, 0, 0, 0, 0x628, 0x629, 0x62A };
260 static const u16 NCT6775_REG_TEMP_HYST[]
261 = { 0x3a, 0x153, 0x253, 0, 0, 0, 0x673, 0x678, 0x67D };
262 static const u16 NCT6775_REG_TEMP_OVER[]
263 = { 0x39, 0x155, 0x255, 0, 0, 0, 0x672, 0x677, 0x67C };
264 static const u16 NCT6775_REG_TEMP_SOURCE[]
265 = { 0x621, 0x622, 0x623, 0x100, 0x200, 0x300, 0x624, 0x625, 0x626 };
266
267 static const char *const w83667hg_b_temp_label[] = {
268 "SYSTIN",
269 "CPUTIN",
270 "AUXTIN",
271 "AMDTSI",
272 "PECI Agent 1",
273 "PECI Agent 2",
274 "PECI Agent 3",
275 "PECI Agent 4"
276 };
277
278 static const char *const nct6775_temp_label[] = {
279 "",
280 "SYSTIN",
281 "CPUTIN",
282 "AUXTIN",
283 "AMD SB-TSI",
284 "PECI Agent 0",
285 "PECI Agent 1",
286 "PECI Agent 2",
287 "PECI Agent 3",
288 "PECI Agent 4",
289 "PECI Agent 5",
290 "PECI Agent 6",
291 "PECI Agent 7",
292 "PCH_CHIP_CPU_MAX_TEMP",
293 "PCH_CHIP_TEMP",
294 "PCH_CPU_TEMP",
295 "PCH_MCH_TEMP",
296 "PCH_DIM0_TEMP",
297 "PCH_DIM1_TEMP",
298 "PCH_DIM2_TEMP",
299 "PCH_DIM3_TEMP"
300 };
301
302 static const char *const nct6776_temp_label[] = {
303 "",
304 "SYSTIN",
305 "CPUTIN",
306 "AUXTIN",
307 "SMBUSMASTER 0",
308 "SMBUSMASTER 1",
309 "SMBUSMASTER 2",
310 "SMBUSMASTER 3",
311 "SMBUSMASTER 4",
312 "SMBUSMASTER 5",
313 "SMBUSMASTER 6",
314 "SMBUSMASTER 7",
315 "PECI Agent 0",
316 "PECI Agent 1",
317 "PCH_CHIP_CPU_MAX_TEMP",
318 "PCH_CHIP_TEMP",
319 "PCH_CPU_TEMP",
320 "PCH_MCH_TEMP",
321 "PCH_DIM0_TEMP",
322 "PCH_DIM1_TEMP",
323 "PCH_DIM2_TEMP",
324 "PCH_DIM3_TEMP",
325 "BYTE_TEMP"
326 };
327
328 #define NUM_REG_TEMP ARRAY_SIZE(NCT6775_REG_TEMP)
329
330 static int is_word_sized(u16 reg)
331 {
332 return ((((reg & 0xff00) == 0x100
333 || (reg & 0xff00) == 0x200)
334 && ((reg & 0x00ff) == 0x50
335 || (reg & 0x00ff) == 0x53
336 || (reg & 0x00ff) == 0x55))
337 || (reg & 0xfff0) == 0x630
338 || reg == 0x640 || reg == 0x642
339 || ((reg & 0xfff0) == 0x650
340 && (reg & 0x000f) >= 0x06)
341 || reg == 0x73 || reg == 0x75 || reg == 0x77
342 );
343 }
344
345 /*
346 * Conversions
347 */
348
349 /* 1 is PWM mode, output in ms */
350 static inline unsigned int step_time_from_reg(u8 reg, u8 mode)
351 {
352 return mode ? 100 * reg : 400 * reg;
353 }
354
355 static inline u8 step_time_to_reg(unsigned int msec, u8 mode)
356 {
357 return SENSORS_LIMIT((mode ? (msec + 50) / 100 :
358 (msec + 200) / 400), 1, 255);
359 }
360
361 static unsigned int fan_from_reg8(u16 reg, unsigned int divreg)
362 {
363 if (reg == 0 || reg == 255)
364 return 0;
365 return 1350000U / (reg << divreg);
366 }
367
368 static unsigned int fan_from_reg13(u16 reg, unsigned int divreg)
369 {
370 if ((reg & 0xff1f) == 0xff1f)
371 return 0;
372
373 reg = (reg & 0x1f) | ((reg & 0xff00) >> 3);
374
375 if (reg == 0)
376 return 0;
377
378 return 1350000U / reg;
379 }
380
381 static unsigned int fan_from_reg16(u16 reg, unsigned int divreg)
382 {
383 if (reg == 0 || reg == 0xffff)
384 return 0;
385
386 /*
387 * Even though the registers are 16 bit wide, the fan divisor
388 * still applies.
389 */
390 return 1350000U / (reg << divreg);
391 }
392
393 static inline unsigned int
394 div_from_reg(u8 reg)
395 {
396 return 1 << reg;
397 }
398
399 /*
400 * Some of the voltage inputs have internal scaling, the tables below
401 * contain 8 (the ADC LSB in mV) * scaling factor * 100
402 */
403 static const u16 scale_in_common[10] = {
404 800, 800, 1600, 1600, 800, 800, 800, 1600, 1600, 800
405 };
406 static const u16 scale_in_w83627uhg[9] = {
407 800, 800, 3328, 3424, 800, 800, 0, 3328, 3400
408 };
409
410 static inline long in_from_reg(u8 reg, u8 nr, const u16 *scale_in)
411 {
412 return DIV_ROUND_CLOSEST(reg * scale_in[nr], 100);
413 }
414
415 static inline u8 in_to_reg(u32 val, u8 nr, const u16 *scale_in)
416 {
417 return SENSORS_LIMIT(DIV_ROUND_CLOSEST(val * 100, scale_in[nr]), 0,
418 255);
419 }
420
421 /*
422 * Data structures and manipulation thereof
423 */
424
425 struct w83627ehf_data {
426 int addr; /* IO base of hw monitor block */
427 const char *name;
428
429 struct device *hwmon_dev;
430 struct mutex lock;
431
432 u16 reg_temp[NUM_REG_TEMP];
433 u16 reg_temp_over[NUM_REG_TEMP];
434 u16 reg_temp_hyst[NUM_REG_TEMP];
435 u16 reg_temp_config[NUM_REG_TEMP];
436 u8 temp_src[NUM_REG_TEMP];
437 const char * const *temp_label;
438
439 const u16 *REG_PWM;
440 const u16 *REG_TARGET;
441 const u16 *REG_FAN;
442 const u16 *REG_FAN_MIN;
443 const u16 *REG_FAN_START_OUTPUT;
444 const u16 *REG_FAN_STOP_OUTPUT;
445 const u16 *REG_FAN_STOP_TIME;
446 const u16 *REG_FAN_MAX_OUTPUT;
447 const u16 *REG_FAN_STEP_OUTPUT;
448 const u16 *scale_in;
449
450 unsigned int (*fan_from_reg)(u16 reg, unsigned int divreg);
451 unsigned int (*fan_from_reg_min)(u16 reg, unsigned int divreg);
452
453 struct mutex update_lock;
454 char valid; /* !=0 if following fields are valid */
455 unsigned long last_updated; /* In jiffies */
456
457 /* Register values */
458 u8 bank; /* current register bank */
459 u8 in_num; /* number of in inputs we have */
460 u8 in[10]; /* Register value */
461 u8 in_max[10]; /* Register value */
462 u8 in_min[10]; /* Register value */
463 unsigned int rpm[5];
464 u16 fan_min[5];
465 u8 fan_div[5];
466 u8 has_fan; /* some fan inputs can be disabled */
467 u8 has_fan_min; /* some fans don't have min register */
468 bool has_fan_div;
469 u8 temp_type[3];
470 s8 temp_offset[3];
471 s16 temp[9];
472 s16 temp_max[9];
473 s16 temp_max_hyst[9];
474 u32 alarms;
475 u8 caseopen;
476
477 u8 pwm_mode[4]; /* 0->DC variable voltage, 1->PWM variable duty cycle */
478 u8 pwm_enable[4]; /* 1->manual
479 * 2->thermal cruise mode (also called SmartFan I)
480 * 3->fan speed cruise mode
481 * 4->variable thermal cruise (also called
482 * SmartFan III)
483 * 5->enhanced variable thermal cruise (also called
484 * SmartFan IV)
485 */
486 u8 pwm_enable_orig[4]; /* original value of pwm_enable */
487 u8 pwm_num; /* number of pwm */
488 u8 pwm[4];
489 u8 target_temp[4];
490 u8 tolerance[4];
491
492 u8 fan_start_output[4]; /* minimum fan speed when spinning up */
493 u8 fan_stop_output[4]; /* minimum fan speed when spinning down */
494 u8 fan_stop_time[4]; /* time at minimum before disabling fan */
495 u8 fan_max_output[4]; /* maximum fan speed */
496 u8 fan_step_output[4]; /* rate of change output value */
497
498 u8 vid;
499 u8 vrm;
500
501 u16 have_temp;
502 u16 have_temp_offset;
503 u8 in6_skip:1;
504 u8 temp3_val_only:1;
505
506 #ifdef CONFIG_PM
507 /* Remember extra register values over suspend/resume */
508 u8 vbat;
509 u8 fandiv1;
510 u8 fandiv2;
511 #endif
512 };
513
514 struct w83627ehf_sio_data {
515 int sioreg;
516 enum kinds kind;
517 };
518
519 /*
520 * On older chips, only registers 0x50-0x5f are banked.
521 * On more recent chips, all registers are banked.
522 * Assume that is the case and set the bank number for each access.
523 * Cache the bank number so it only needs to be set if it changes.
524 */
525 static inline void w83627ehf_set_bank(struct w83627ehf_data *data, u16 reg)
526 {
527 u8 bank = reg >> 8;
528 if (data->bank != bank) {
529 outb_p(W83627EHF_REG_BANK, data->addr + ADDR_REG_OFFSET);
530 outb_p(bank, data->addr + DATA_REG_OFFSET);
531 data->bank = bank;
532 }
533 }
534
535 static u16 w83627ehf_read_value(struct w83627ehf_data *data, u16 reg)
536 {
537 int res, word_sized = is_word_sized(reg);
538
539 mutex_lock(&data->lock);
540
541 w83627ehf_set_bank(data, reg);
542 outb_p(reg & 0xff, data->addr + ADDR_REG_OFFSET);
543 res = inb_p(data->addr + DATA_REG_OFFSET);
544 if (word_sized) {
545 outb_p((reg & 0xff) + 1,
546 data->addr + ADDR_REG_OFFSET);
547 res = (res << 8) + inb_p(data->addr + DATA_REG_OFFSET);
548 }
549
550 mutex_unlock(&data->lock);
551 return res;
552 }
553
554 static int w83627ehf_write_value(struct w83627ehf_data *data, u16 reg,
555 u16 value)
556 {
557 int word_sized = is_word_sized(reg);
558
559 mutex_lock(&data->lock);
560
561 w83627ehf_set_bank(data, reg);
562 outb_p(reg & 0xff, data->addr + ADDR_REG_OFFSET);
563 if (word_sized) {
564 outb_p(value >> 8, data->addr + DATA_REG_OFFSET);
565 outb_p((reg & 0xff) + 1,
566 data->addr + ADDR_REG_OFFSET);
567 }
568 outb_p(value & 0xff, data->addr + DATA_REG_OFFSET);
569
570 mutex_unlock(&data->lock);
571 return 0;
572 }
573
574 /* We left-align 8-bit temperature values to make the code simpler */
575 static u16 w83627ehf_read_temp(struct w83627ehf_data *data, u16 reg)
576 {
577 u16 res;
578
579 res = w83627ehf_read_value(data, reg);
580 if (!is_word_sized(reg))
581 res <<= 8;
582
583 return res;
584 }
585
586 static int w83627ehf_write_temp(struct w83627ehf_data *data, u16 reg,
587 u16 value)
588 {
589 if (!is_word_sized(reg))
590 value >>= 8;
591 return w83627ehf_write_value(data, reg, value);
592 }
593
594 /* This function assumes that the caller holds data->update_lock */
595 static void nct6775_write_fan_div(struct w83627ehf_data *data, int nr)
596 {
597 u8 reg;
598
599 switch (nr) {
600 case 0:
601 reg = (w83627ehf_read_value(data, NCT6775_REG_FANDIV1) & 0x70)
602 | (data->fan_div[0] & 0x7);
603 w83627ehf_write_value(data, NCT6775_REG_FANDIV1, reg);
604 break;
605 case 1:
606 reg = (w83627ehf_read_value(data, NCT6775_REG_FANDIV1) & 0x7)
607 | ((data->fan_div[1] << 4) & 0x70);
608 w83627ehf_write_value(data, NCT6775_REG_FANDIV1, reg);
609 break;
610 case 2:
611 reg = (w83627ehf_read_value(data, NCT6775_REG_FANDIV2) & 0x70)
612 | (data->fan_div[2] & 0x7);
613 w83627ehf_write_value(data, NCT6775_REG_FANDIV2, reg);
614 break;
615 case 3:
616 reg = (w83627ehf_read_value(data, NCT6775_REG_FANDIV2) & 0x7)
617 | ((data->fan_div[3] << 4) & 0x70);
618 w83627ehf_write_value(data, NCT6775_REG_FANDIV2, reg);
619 break;
620 }
621 }
622
623 /* This function assumes that the caller holds data->update_lock */
624 static void w83627ehf_write_fan_div(struct w83627ehf_data *data, int nr)
625 {
626 u8 reg;
627
628 switch (nr) {
629 case 0:
630 reg = (w83627ehf_read_value(data, W83627EHF_REG_FANDIV1) & 0xcf)
631 | ((data->fan_div[0] & 0x03) << 4);
632 /* fan5 input control bit is write only, compute the value */
633 reg |= (data->has_fan & (1 << 4)) ? 1 : 0;
634 w83627ehf_write_value(data, W83627EHF_REG_FANDIV1, reg);
635 reg = (w83627ehf_read_value(data, W83627EHF_REG_VBAT) & 0xdf)
636 | ((data->fan_div[0] & 0x04) << 3);
637 w83627ehf_write_value(data, W83627EHF_REG_VBAT, reg);
638 break;
639 case 1:
640 reg = (w83627ehf_read_value(data, W83627EHF_REG_FANDIV1) & 0x3f)
641 | ((data->fan_div[1] & 0x03) << 6);
642 /* fan5 input control bit is write only, compute the value */
643 reg |= (data->has_fan & (1 << 4)) ? 1 : 0;
644 w83627ehf_write_value(data, W83627EHF_REG_FANDIV1, reg);
645 reg = (w83627ehf_read_value(data, W83627EHF_REG_VBAT) & 0xbf)
646 | ((data->fan_div[1] & 0x04) << 4);
647 w83627ehf_write_value(data, W83627EHF_REG_VBAT, reg);
648 break;
649 case 2:
650 reg = (w83627ehf_read_value(data, W83627EHF_REG_FANDIV2) & 0x3f)
651 | ((data->fan_div[2] & 0x03) << 6);
652 w83627ehf_write_value(data, W83627EHF_REG_FANDIV2, reg);
653 reg = (w83627ehf_read_value(data, W83627EHF_REG_VBAT) & 0x7f)
654 | ((data->fan_div[2] & 0x04) << 5);
655 w83627ehf_write_value(data, W83627EHF_REG_VBAT, reg);
656 break;
657 case 3:
658 reg = (w83627ehf_read_value(data, W83627EHF_REG_DIODE) & 0xfc)
659 | (data->fan_div[3] & 0x03);
660 w83627ehf_write_value(data, W83627EHF_REG_DIODE, reg);
661 reg = (w83627ehf_read_value(data, W83627EHF_REG_SMI_OVT) & 0x7f)
662 | ((data->fan_div[3] & 0x04) << 5);
663 w83627ehf_write_value(data, W83627EHF_REG_SMI_OVT, reg);
664 break;
665 case 4:
666 reg = (w83627ehf_read_value(data, W83627EHF_REG_DIODE) & 0x73)
667 | ((data->fan_div[4] & 0x03) << 2)
668 | ((data->fan_div[4] & 0x04) << 5);
669 w83627ehf_write_value(data, W83627EHF_REG_DIODE, reg);
670 break;
671 }
672 }
673
674 static void w83627ehf_write_fan_div_common(struct device *dev,
675 struct w83627ehf_data *data, int nr)
676 {
677 struct w83627ehf_sio_data *sio_data = dev->platform_data;
678
679 if (sio_data->kind == nct6776)
680 ; /* no dividers, do nothing */
681 else if (sio_data->kind == nct6775)
682 nct6775_write_fan_div(data, nr);
683 else
684 w83627ehf_write_fan_div(data, nr);
685 }
686
687 static void nct6775_update_fan_div(struct w83627ehf_data *data)
688 {
689 u8 i;
690
691 i = w83627ehf_read_value(data, NCT6775_REG_FANDIV1);
692 data->fan_div[0] = i & 0x7;
693 data->fan_div[1] = (i & 0x70) >> 4;
694 i = w83627ehf_read_value(data, NCT6775_REG_FANDIV2);
695 data->fan_div[2] = i & 0x7;
696 if (data->has_fan & (1<<3))
697 data->fan_div[3] = (i & 0x70) >> 4;
698 }
699
700 static void w83627ehf_update_fan_div(struct w83627ehf_data *data)
701 {
702 int i;
703
704 i = w83627ehf_read_value(data, W83627EHF_REG_FANDIV1);
705 data->fan_div[0] = (i >> 4) & 0x03;
706 data->fan_div[1] = (i >> 6) & 0x03;
707 i = w83627ehf_read_value(data, W83627EHF_REG_FANDIV2);
708 data->fan_div[2] = (i >> 6) & 0x03;
709 i = w83627ehf_read_value(data, W83627EHF_REG_VBAT);
710 data->fan_div[0] |= (i >> 3) & 0x04;
711 data->fan_div[1] |= (i >> 4) & 0x04;
712 data->fan_div[2] |= (i >> 5) & 0x04;
713 if (data->has_fan & ((1 << 3) | (1 << 4))) {
714 i = w83627ehf_read_value(data, W83627EHF_REG_DIODE);
715 data->fan_div[3] = i & 0x03;
716 data->fan_div[4] = ((i >> 2) & 0x03)
717 | ((i >> 5) & 0x04);
718 }
719 if (data->has_fan & (1 << 3)) {
720 i = w83627ehf_read_value(data, W83627EHF_REG_SMI_OVT);
721 data->fan_div[3] |= (i >> 5) & 0x04;
722 }
723 }
724
725 static void w83627ehf_update_fan_div_common(struct device *dev,
726 struct w83627ehf_data *data)
727 {
728 struct w83627ehf_sio_data *sio_data = dev->platform_data;
729
730 if (sio_data->kind == nct6776)
731 ; /* no dividers, do nothing */
732 else if (sio_data->kind == nct6775)
733 nct6775_update_fan_div(data);
734 else
735 w83627ehf_update_fan_div(data);
736 }
737
738 static void nct6775_update_pwm(struct w83627ehf_data *data)
739 {
740 int i;
741 int pwmcfg, fanmodecfg;
742
743 for (i = 0; i < data->pwm_num; i++) {
744 pwmcfg = w83627ehf_read_value(data,
745 W83627EHF_REG_PWM_ENABLE[i]);
746 fanmodecfg = w83627ehf_read_value(data,
747 NCT6775_REG_FAN_MODE[i]);
748 data->pwm_mode[i] =
749 ((pwmcfg >> W83627EHF_PWM_MODE_SHIFT[i]) & 1) ? 0 : 1;
750 data->pwm_enable[i] = ((fanmodecfg >> 4) & 7) + 1;
751 data->tolerance[i] = fanmodecfg & 0x0f;
752 data->pwm[i] = w83627ehf_read_value(data, data->REG_PWM[i]);
753 }
754 }
755
756 static void w83627ehf_update_pwm(struct w83627ehf_data *data)
757 {
758 int i;
759 int pwmcfg = 0, tolerance = 0; /* shut up the compiler */
760
761 for (i = 0; i < data->pwm_num; i++) {
762 if (!(data->has_fan & (1 << i)))
763 continue;
764
765 /* pwmcfg, tolerance mapped for i=0, i=1 to same reg */
766 if (i != 1) {
767 pwmcfg = w83627ehf_read_value(data,
768 W83627EHF_REG_PWM_ENABLE[i]);
769 tolerance = w83627ehf_read_value(data,
770 W83627EHF_REG_TOLERANCE[i]);
771 }
772 data->pwm_mode[i] =
773 ((pwmcfg >> W83627EHF_PWM_MODE_SHIFT[i]) & 1) ? 0 : 1;
774 data->pwm_enable[i] = ((pwmcfg >> W83627EHF_PWM_ENABLE_SHIFT[i])
775 & 3) + 1;
776 data->pwm[i] = w83627ehf_read_value(data, data->REG_PWM[i]);
777
778 data->tolerance[i] = (tolerance >> (i == 1 ? 4 : 0)) & 0x0f;
779 }
780 }
781
782 static void w83627ehf_update_pwm_common(struct device *dev,
783 struct w83627ehf_data *data)
784 {
785 struct w83627ehf_sio_data *sio_data = dev->platform_data;
786
787 if (sio_data->kind == nct6775 || sio_data->kind == nct6776)
788 nct6775_update_pwm(data);
789 else
790 w83627ehf_update_pwm(data);
791 }
792
793 static struct w83627ehf_data *w83627ehf_update_device(struct device *dev)
794 {
795 struct w83627ehf_data *data = dev_get_drvdata(dev);
796 struct w83627ehf_sio_data *sio_data = dev->platform_data;
797
798 int i;
799
800 mutex_lock(&data->update_lock);
801
802 if (time_after(jiffies, data->last_updated + HZ + HZ/2)
803 || !data->valid) {
804 /* Fan clock dividers */
805 w83627ehf_update_fan_div_common(dev, data);
806
807 /* Measured voltages and limits */
808 for (i = 0; i < data->in_num; i++) {
809 if ((i == 6) && data->in6_skip)
810 continue;
811
812 data->in[i] = w83627ehf_read_value(data,
813 W83627EHF_REG_IN(i));
814 data->in_min[i] = w83627ehf_read_value(data,
815 W83627EHF_REG_IN_MIN(i));
816 data->in_max[i] = w83627ehf_read_value(data,
817 W83627EHF_REG_IN_MAX(i));
818 }
819
820 /* Measured fan speeds and limits */
821 for (i = 0; i < 5; i++) {
822 u16 reg;
823
824 if (!(data->has_fan & (1 << i)))
825 continue;
826
827 reg = w83627ehf_read_value(data, data->REG_FAN[i]);
828 data->rpm[i] = data->fan_from_reg(reg,
829 data->fan_div[i]);
830
831 if (data->has_fan_min & (1 << i))
832 data->fan_min[i] = w83627ehf_read_value(data,
833 data->REG_FAN_MIN[i]);
834
835 /*
836 * If we failed to measure the fan speed and clock
837 * divider can be increased, let's try that for next
838 * time
839 */
840 if (data->has_fan_div
841 && (reg >= 0xff || (sio_data->kind == nct6775
842 && reg == 0x00))
843 && data->fan_div[i] < 0x07) {
844 dev_dbg(dev, "Increasing fan%d "
845 "clock divider from %u to %u\n",
846 i + 1, div_from_reg(data->fan_div[i]),
847 div_from_reg(data->fan_div[i] + 1));
848 data->fan_div[i]++;
849 w83627ehf_write_fan_div_common(dev, data, i);
850 /* Preserve min limit if possible */
851 if ((data->has_fan_min & (1 << i))
852 && data->fan_min[i] >= 2
853 && data->fan_min[i] != 255)
854 w83627ehf_write_value(data,
855 data->REG_FAN_MIN[i],
856 (data->fan_min[i] /= 2));
857 }
858 }
859
860 w83627ehf_update_pwm_common(dev, data);
861
862 for (i = 0; i < data->pwm_num; i++) {
863 if (!(data->has_fan & (1 << i)))
864 continue;
865
866 data->fan_start_output[i] =
867 w83627ehf_read_value(data,
868 data->REG_FAN_START_OUTPUT[i]);
869 data->fan_stop_output[i] =
870 w83627ehf_read_value(data,
871 data->REG_FAN_STOP_OUTPUT[i]);
872 data->fan_stop_time[i] =
873 w83627ehf_read_value(data,
874 data->REG_FAN_STOP_TIME[i]);
875
876 if (data->REG_FAN_MAX_OUTPUT &&
877 data->REG_FAN_MAX_OUTPUT[i] != 0xff)
878 data->fan_max_output[i] =
879 w83627ehf_read_value(data,
880 data->REG_FAN_MAX_OUTPUT[i]);
881
882 if (data->REG_FAN_STEP_OUTPUT &&
883 data->REG_FAN_STEP_OUTPUT[i] != 0xff)
884 data->fan_step_output[i] =
885 w83627ehf_read_value(data,
886 data->REG_FAN_STEP_OUTPUT[i]);
887
888 data->target_temp[i] =
889 w83627ehf_read_value(data,
890 data->REG_TARGET[i]) &
891 (data->pwm_mode[i] == 1 ? 0x7f : 0xff);
892 }
893
894 /* Measured temperatures and limits */
895 for (i = 0; i < NUM_REG_TEMP; i++) {
896 if (!(data->have_temp & (1 << i)))
897 continue;
898 data->temp[i] = w83627ehf_read_temp(data,
899 data->reg_temp[i]);
900 if (data->reg_temp_over[i])
901 data->temp_max[i]
902 = w83627ehf_read_temp(data,
903 data->reg_temp_over[i]);
904 if (data->reg_temp_hyst[i])
905 data->temp_max_hyst[i]
906 = w83627ehf_read_temp(data,
907 data->reg_temp_hyst[i]);
908 if (i > 2)
909 continue;
910 if (data->have_temp_offset & (1 << i))
911 data->temp_offset[i]
912 = w83627ehf_read_value(data,
913 W83627EHF_REG_TEMP_OFFSET[i]);
914 }
915
916 data->alarms = w83627ehf_read_value(data,
917 W83627EHF_REG_ALARM1) |
918 (w83627ehf_read_value(data,
919 W83627EHF_REG_ALARM2) << 8) |
920 (w83627ehf_read_value(data,
921 W83627EHF_REG_ALARM3) << 16);
922
923 data->caseopen = w83627ehf_read_value(data,
924 W83627EHF_REG_CASEOPEN_DET);
925
926 data->last_updated = jiffies;
927 data->valid = 1;
928 }
929
930 mutex_unlock(&data->update_lock);
931 return data;
932 }
933
934 /*
935 * Sysfs callback functions
936 */
937 #define show_in_reg(reg) \
938 static ssize_t \
939 show_##reg(struct device *dev, struct device_attribute *attr, \
940 char *buf) \
941 { \
942 struct w83627ehf_data *data = w83627ehf_update_device(dev); \
943 struct sensor_device_attribute *sensor_attr = \
944 to_sensor_dev_attr(attr); \
945 int nr = sensor_attr->index; \
946 return sprintf(buf, "%ld\n", in_from_reg(data->reg[nr], nr, \
947 data->scale_in)); \
948 }
949 show_in_reg(in)
950 show_in_reg(in_min)
951 show_in_reg(in_max)
952
953 #define store_in_reg(REG, reg) \
954 static ssize_t \
955 store_in_##reg(struct device *dev, struct device_attribute *attr, \
956 const char *buf, size_t count) \
957 { \
958 struct w83627ehf_data *data = dev_get_drvdata(dev); \
959 struct sensor_device_attribute *sensor_attr = \
960 to_sensor_dev_attr(attr); \
961 int nr = sensor_attr->index; \
962 unsigned long val; \
963 int err; \
964 err = kstrtoul(buf, 10, &val); \
965 if (err < 0) \
966 return err; \
967 mutex_lock(&data->update_lock); \
968 data->in_##reg[nr] = in_to_reg(val, nr, data->scale_in); \
969 w83627ehf_write_value(data, W83627EHF_REG_IN_##REG(nr), \
970 data->in_##reg[nr]); \
971 mutex_unlock(&data->update_lock); \
972 return count; \
973 }
974
975 store_in_reg(MIN, min)
976 store_in_reg(MAX, max)
977
978 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
979 char *buf)
980 {
981 struct w83627ehf_data *data = w83627ehf_update_device(dev);
982 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
983 int nr = sensor_attr->index;
984 return sprintf(buf, "%u\n", (data->alarms >> nr) & 0x01);
985 }
986
987 static struct sensor_device_attribute sda_in_input[] = {
988 SENSOR_ATTR(in0_input, S_IRUGO, show_in, NULL, 0),
989 SENSOR_ATTR(in1_input, S_IRUGO, show_in, NULL, 1),
990 SENSOR_ATTR(in2_input, S_IRUGO, show_in, NULL, 2),
991 SENSOR_ATTR(in3_input, S_IRUGO, show_in, NULL, 3),
992 SENSOR_ATTR(in4_input, S_IRUGO, show_in, NULL, 4),
993 SENSOR_ATTR(in5_input, S_IRUGO, show_in, NULL, 5),
994 SENSOR_ATTR(in6_input, S_IRUGO, show_in, NULL, 6),
995 SENSOR_ATTR(in7_input, S_IRUGO, show_in, NULL, 7),
996 SENSOR_ATTR(in8_input, S_IRUGO, show_in, NULL, 8),
997 SENSOR_ATTR(in9_input, S_IRUGO, show_in, NULL, 9),
998 };
999
1000 static struct sensor_device_attribute sda_in_alarm[] = {
1001 SENSOR_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0),
1002 SENSOR_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1),
1003 SENSOR_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2),
1004 SENSOR_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3),
1005 SENSOR_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8),
1006 SENSOR_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 21),
1007 SENSOR_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 20),
1008 SENSOR_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 16),
1009 SENSOR_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 17),
1010 SENSOR_ATTR(in9_alarm, S_IRUGO, show_alarm, NULL, 19),
1011 };
1012
1013 static struct sensor_device_attribute sda_in_min[] = {
1014 SENSOR_ATTR(in0_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 0),
1015 SENSOR_ATTR(in1_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 1),
1016 SENSOR_ATTR(in2_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 2),
1017 SENSOR_ATTR(in3_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 3),
1018 SENSOR_ATTR(in4_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 4),
1019 SENSOR_ATTR(in5_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 5),
1020 SENSOR_ATTR(in6_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 6),
1021 SENSOR_ATTR(in7_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 7),
1022 SENSOR_ATTR(in8_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 8),
1023 SENSOR_ATTR(in9_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 9),
1024 };
1025
1026 static struct sensor_device_attribute sda_in_max[] = {
1027 SENSOR_ATTR(in0_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 0),
1028 SENSOR_ATTR(in1_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 1),
1029 SENSOR_ATTR(in2_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 2),
1030 SENSOR_ATTR(in3_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 3),
1031 SENSOR_ATTR(in4_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 4),
1032 SENSOR_ATTR(in5_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 5),
1033 SENSOR_ATTR(in6_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 6),
1034 SENSOR_ATTR(in7_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 7),
1035 SENSOR_ATTR(in8_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 8),
1036 SENSOR_ATTR(in9_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 9),
1037 };
1038
1039 static ssize_t
1040 show_fan(struct device *dev, struct device_attribute *attr, char *buf)
1041 {
1042 struct w83627ehf_data *data = w83627ehf_update_device(dev);
1043 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1044 int nr = sensor_attr->index;
1045 return sprintf(buf, "%d\n", data->rpm[nr]);
1046 }
1047
1048 static ssize_t
1049 show_fan_min(struct device *dev, struct device_attribute *attr, char *buf)
1050 {
1051 struct w83627ehf_data *data = w83627ehf_update_device(dev);
1052 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1053 int nr = sensor_attr->index;
1054 return sprintf(buf, "%d\n",
1055 data->fan_from_reg_min(data->fan_min[nr],
1056 data->fan_div[nr]));
1057 }
1058
1059 static ssize_t
1060 show_fan_div(struct device *dev, struct device_attribute *attr,
1061 char *buf)
1062 {
1063 struct w83627ehf_data *data = w83627ehf_update_device(dev);
1064 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1065 int nr = sensor_attr->index;
1066 return sprintf(buf, "%u\n", div_from_reg(data->fan_div[nr]));
1067 }
1068
1069 static ssize_t
1070 store_fan_min(struct device *dev, struct device_attribute *attr,
1071 const char *buf, size_t count)
1072 {
1073 struct w83627ehf_data *data = dev_get_drvdata(dev);
1074 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1075 int nr = sensor_attr->index;
1076 unsigned long val;
1077 int err;
1078 unsigned int reg;
1079 u8 new_div;
1080
1081 err = kstrtoul(buf, 10, &val);
1082 if (err < 0)
1083 return err;
1084
1085 mutex_lock(&data->update_lock);
1086 if (!data->has_fan_div) {
1087 /*
1088 * Only NCT6776F for now, so we know that this is a 13 bit
1089 * register
1090 */
1091 if (!val) {
1092 val = 0xff1f;
1093 } else {
1094 if (val > 1350000U)
1095 val = 135000U;
1096 val = 1350000U / val;
1097 val = (val & 0x1f) | ((val << 3) & 0xff00);
1098 }
1099 data->fan_min[nr] = val;
1100 goto done; /* Leave fan divider alone */
1101 }
1102 if (!val) {
1103 /* No min limit, alarm disabled */
1104 data->fan_min[nr] = 255;
1105 new_div = data->fan_div[nr]; /* No change */
1106 dev_info(dev, "fan%u low limit and alarm disabled\n", nr + 1);
1107 } else if ((reg = 1350000U / val) >= 128 * 255) {
1108 /*
1109 * Speed below this value cannot possibly be represented,
1110 * even with the highest divider (128)
1111 */
1112 data->fan_min[nr] = 254;
1113 new_div = 7; /* 128 == (1 << 7) */
1114 dev_warn(dev, "fan%u low limit %lu below minimum %u, set to "
1115 "minimum\n", nr + 1, val,
1116 data->fan_from_reg_min(254, 7));
1117 } else if (!reg) {
1118 /*
1119 * Speed above this value cannot possibly be represented,
1120 * even with the lowest divider (1)
1121 */
1122 data->fan_min[nr] = 1;
1123 new_div = 0; /* 1 == (1 << 0) */
1124 dev_warn(dev, "fan%u low limit %lu above maximum %u, set to "
1125 "maximum\n", nr + 1, val,
1126 data->fan_from_reg_min(1, 0));
1127 } else {
1128 /*
1129 * Automatically pick the best divider, i.e. the one such
1130 * that the min limit will correspond to a register value
1131 * in the 96..192 range
1132 */
1133 new_div = 0;
1134 while (reg > 192 && new_div < 7) {
1135 reg >>= 1;
1136 new_div++;
1137 }
1138 data->fan_min[nr] = reg;
1139 }
1140
1141 /*
1142 * Write both the fan clock divider (if it changed) and the new
1143 * fan min (unconditionally)
1144 */
1145 if (new_div != data->fan_div[nr]) {
1146 dev_dbg(dev, "fan%u clock divider changed from %u to %u\n",
1147 nr + 1, div_from_reg(data->fan_div[nr]),
1148 div_from_reg(new_div));
1149 data->fan_div[nr] = new_div;
1150 w83627ehf_write_fan_div_common(dev, data, nr);
1151 /* Give the chip time to sample a new speed value */
1152 data->last_updated = jiffies;
1153 }
1154 done:
1155 w83627ehf_write_value(data, data->REG_FAN_MIN[nr],
1156 data->fan_min[nr]);
1157 mutex_unlock(&data->update_lock);
1158
1159 return count;
1160 }
1161
1162 static struct sensor_device_attribute sda_fan_input[] = {
1163 SENSOR_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0),
1164 SENSOR_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1),
1165 SENSOR_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2),
1166 SENSOR_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3),
1167 SENSOR_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 4),
1168 };
1169
1170 static struct sensor_device_attribute sda_fan_alarm[] = {
1171 SENSOR_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6),
1172 SENSOR_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7),
1173 SENSOR_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 11),
1174 SENSOR_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 10),
1175 SENSOR_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 23),
1176 };
1177
1178 static struct sensor_device_attribute sda_fan_min[] = {
1179 SENSOR_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan_min,
1180 store_fan_min, 0),
1181 SENSOR_ATTR(fan2_min, S_IWUSR | S_IRUGO, show_fan_min,
1182 store_fan_min, 1),
1183 SENSOR_ATTR(fan3_min, S_IWUSR | S_IRUGO, show_fan_min,
1184 store_fan_min, 2),
1185 SENSOR_ATTR(fan4_min, S_IWUSR | S_IRUGO, show_fan_min,
1186 store_fan_min, 3),
1187 SENSOR_ATTR(fan5_min, S_IWUSR | S_IRUGO, show_fan_min,
1188 store_fan_min, 4),
1189 };
1190
1191 static struct sensor_device_attribute sda_fan_div[] = {
1192 SENSOR_ATTR(fan1_div, S_IRUGO, show_fan_div, NULL, 0),
1193 SENSOR_ATTR(fan2_div, S_IRUGO, show_fan_div, NULL, 1),
1194 SENSOR_ATTR(fan3_div, S_IRUGO, show_fan_div, NULL, 2),
1195 SENSOR_ATTR(fan4_div, S_IRUGO, show_fan_div, NULL, 3),
1196 SENSOR_ATTR(fan5_div, S_IRUGO, show_fan_div, NULL, 4),
1197 };
1198
1199 static ssize_t
1200 show_temp_label(struct device *dev, struct device_attribute *attr, char *buf)
1201 {
1202 struct w83627ehf_data *data = w83627ehf_update_device(dev);
1203 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1204 int nr = sensor_attr->index;
1205 return sprintf(buf, "%s\n", data->temp_label[data->temp_src[nr]]);
1206 }
1207
1208 #define show_temp_reg(addr, reg) \
1209 static ssize_t \
1210 show_##reg(struct device *dev, struct device_attribute *attr, \
1211 char *buf) \
1212 { \
1213 struct w83627ehf_data *data = w83627ehf_update_device(dev); \
1214 struct sensor_device_attribute *sensor_attr = \
1215 to_sensor_dev_attr(attr); \
1216 int nr = sensor_attr->index; \
1217 return sprintf(buf, "%d\n", LM75_TEMP_FROM_REG(data->reg[nr])); \
1218 }
1219 show_temp_reg(reg_temp, temp);
1220 show_temp_reg(reg_temp_over, temp_max);
1221 show_temp_reg(reg_temp_hyst, temp_max_hyst);
1222
1223 #define store_temp_reg(addr, reg) \
1224 static ssize_t \
1225 store_##reg(struct device *dev, struct device_attribute *attr, \
1226 const char *buf, size_t count) \
1227 { \
1228 struct w83627ehf_data *data = dev_get_drvdata(dev); \
1229 struct sensor_device_attribute *sensor_attr = \
1230 to_sensor_dev_attr(attr); \
1231 int nr = sensor_attr->index; \
1232 int err; \
1233 long val; \
1234 err = kstrtol(buf, 10, &val); \
1235 if (err < 0) \
1236 return err; \
1237 mutex_lock(&data->update_lock); \
1238 data->reg[nr] = LM75_TEMP_TO_REG(val); \
1239 w83627ehf_write_temp(data, data->addr[nr], data->reg[nr]); \
1240 mutex_unlock(&data->update_lock); \
1241 return count; \
1242 }
1243 store_temp_reg(reg_temp_over, temp_max);
1244 store_temp_reg(reg_temp_hyst, temp_max_hyst);
1245
1246 static ssize_t
1247 show_temp_offset(struct device *dev, struct device_attribute *attr, char *buf)
1248 {
1249 struct w83627ehf_data *data = w83627ehf_update_device(dev);
1250 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1251
1252 return sprintf(buf, "%d\n",
1253 data->temp_offset[sensor_attr->index] * 1000);
1254 }
1255
1256 static ssize_t
1257 store_temp_offset(struct device *dev, struct device_attribute *attr,
1258 const char *buf, size_t count)
1259 {
1260 struct w83627ehf_data *data = dev_get_drvdata(dev);
1261 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1262 int nr = sensor_attr->index;
1263 long val;
1264 int err;
1265
1266 err = kstrtol(buf, 10, &val);
1267 if (err < 0)
1268 return err;
1269
1270 val = SENSORS_LIMIT(DIV_ROUND_CLOSEST(val, 1000), -128, 127);
1271
1272 mutex_lock(&data->update_lock);
1273 data->temp_offset[nr] = val;
1274 w83627ehf_write_value(data, W83627EHF_REG_TEMP_OFFSET[nr], val);
1275 mutex_unlock(&data->update_lock);
1276 return count;
1277 }
1278
1279 static ssize_t
1280 show_temp_type(struct device *dev, struct device_attribute *attr, char *buf)
1281 {
1282 struct w83627ehf_data *data = w83627ehf_update_device(dev);
1283 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1284 int nr = sensor_attr->index;
1285 return sprintf(buf, "%d\n", (int)data->temp_type[nr]);
1286 }
1287
1288 static struct sensor_device_attribute sda_temp_input[] = {
1289 SENSOR_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0),
1290 SENSOR_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1),
1291 SENSOR_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2),
1292 SENSOR_ATTR(temp4_input, S_IRUGO, show_temp, NULL, 3),
1293 SENSOR_ATTR(temp5_input, S_IRUGO, show_temp, NULL, 4),
1294 SENSOR_ATTR(temp6_input, S_IRUGO, show_temp, NULL, 5),
1295 SENSOR_ATTR(temp7_input, S_IRUGO, show_temp, NULL, 6),
1296 SENSOR_ATTR(temp8_input, S_IRUGO, show_temp, NULL, 7),
1297 SENSOR_ATTR(temp9_input, S_IRUGO, show_temp, NULL, 8),
1298 };
1299
1300 static struct sensor_device_attribute sda_temp_label[] = {
1301 SENSOR_ATTR(temp1_label, S_IRUGO, show_temp_label, NULL, 0),
1302 SENSOR_ATTR(temp2_label, S_IRUGO, show_temp_label, NULL, 1),
1303 SENSOR_ATTR(temp3_label, S_IRUGO, show_temp_label, NULL, 2),
1304 SENSOR_ATTR(temp4_label, S_IRUGO, show_temp_label, NULL, 3),
1305 SENSOR_ATTR(temp5_label, S_IRUGO, show_temp_label, NULL, 4),
1306 SENSOR_ATTR(temp6_label, S_IRUGO, show_temp_label, NULL, 5),
1307 SENSOR_ATTR(temp7_label, S_IRUGO, show_temp_label, NULL, 6),
1308 SENSOR_ATTR(temp8_label, S_IRUGO, show_temp_label, NULL, 7),
1309 SENSOR_ATTR(temp9_label, S_IRUGO, show_temp_label, NULL, 8),
1310 };
1311
1312 static struct sensor_device_attribute sda_temp_max[] = {
1313 SENSOR_ATTR(temp1_max, S_IRUGO | S_IWUSR, show_temp_max,
1314 store_temp_max, 0),
1315 SENSOR_ATTR(temp2_max, S_IRUGO | S_IWUSR, show_temp_max,
1316 store_temp_max, 1),
1317 SENSOR_ATTR(temp3_max, S_IRUGO | S_IWUSR, show_temp_max,
1318 store_temp_max, 2),
1319 SENSOR_ATTR(temp4_max, S_IRUGO | S_IWUSR, show_temp_max,
1320 store_temp_max, 3),
1321 SENSOR_ATTR(temp5_max, S_IRUGO | S_IWUSR, show_temp_max,
1322 store_temp_max, 4),
1323 SENSOR_ATTR(temp6_max, S_IRUGO | S_IWUSR, show_temp_max,
1324 store_temp_max, 5),
1325 SENSOR_ATTR(temp7_max, S_IRUGO | S_IWUSR, show_temp_max,
1326 store_temp_max, 6),
1327 SENSOR_ATTR(temp8_max, S_IRUGO | S_IWUSR, show_temp_max,
1328 store_temp_max, 7),
1329 SENSOR_ATTR(temp9_max, S_IRUGO | S_IWUSR, show_temp_max,
1330 store_temp_max, 8),
1331 };
1332
1333 static struct sensor_device_attribute sda_temp_max_hyst[] = {
1334 SENSOR_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
1335 store_temp_max_hyst, 0),
1336 SENSOR_ATTR(temp2_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
1337 store_temp_max_hyst, 1),
1338 SENSOR_ATTR(temp3_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
1339 store_temp_max_hyst, 2),
1340 SENSOR_ATTR(temp4_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
1341 store_temp_max_hyst, 3),
1342 SENSOR_ATTR(temp5_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
1343 store_temp_max_hyst, 4),
1344 SENSOR_ATTR(temp6_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
1345 store_temp_max_hyst, 5),
1346 SENSOR_ATTR(temp7_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
1347 store_temp_max_hyst, 6),
1348 SENSOR_ATTR(temp8_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
1349 store_temp_max_hyst, 7),
1350 SENSOR_ATTR(temp9_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
1351 store_temp_max_hyst, 8),
1352 };
1353
1354 static struct sensor_device_attribute sda_temp_alarm[] = {
1355 SENSOR_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4),
1356 SENSOR_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5),
1357 SENSOR_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 13),
1358 };
1359
1360 static struct sensor_device_attribute sda_temp_type[] = {
1361 SENSOR_ATTR(temp1_type, S_IRUGO, show_temp_type, NULL, 0),
1362 SENSOR_ATTR(temp2_type, S_IRUGO, show_temp_type, NULL, 1),
1363 SENSOR_ATTR(temp3_type, S_IRUGO, show_temp_type, NULL, 2),
1364 };
1365
1366 static struct sensor_device_attribute sda_temp_offset[] = {
1367 SENSOR_ATTR(temp1_offset, S_IRUGO | S_IWUSR, show_temp_offset,
1368 store_temp_offset, 0),
1369 SENSOR_ATTR(temp2_offset, S_IRUGO | S_IWUSR, show_temp_offset,
1370 store_temp_offset, 1),
1371 SENSOR_ATTR(temp3_offset, S_IRUGO | S_IWUSR, show_temp_offset,
1372 store_temp_offset, 2),
1373 };
1374
1375 #define show_pwm_reg(reg) \
1376 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
1377 char *buf) \
1378 { \
1379 struct w83627ehf_data *data = w83627ehf_update_device(dev); \
1380 struct sensor_device_attribute *sensor_attr = \
1381 to_sensor_dev_attr(attr); \
1382 int nr = sensor_attr->index; \
1383 return sprintf(buf, "%d\n", data->reg[nr]); \
1384 }
1385
1386 show_pwm_reg(pwm_mode)
1387 show_pwm_reg(pwm_enable)
1388 show_pwm_reg(pwm)
1389
1390 static ssize_t
1391 store_pwm_mode(struct device *dev, struct device_attribute *attr,
1392 const char *buf, size_t count)
1393 {
1394 struct w83627ehf_data *data = dev_get_drvdata(dev);
1395 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1396 struct w83627ehf_sio_data *sio_data = dev->platform_data;
1397 int nr = sensor_attr->index;
1398 unsigned long val;
1399 int err;
1400 u16 reg;
1401
1402 err = kstrtoul(buf, 10, &val);
1403 if (err < 0)
1404 return err;
1405
1406 if (val > 1)
1407 return -EINVAL;
1408
1409 /* On NCT67766F, DC mode is only supported for pwm1 */
1410 if (sio_data->kind == nct6776 && nr && val != 1)
1411 return -EINVAL;
1412
1413 mutex_lock(&data->update_lock);
1414 reg = w83627ehf_read_value(data, W83627EHF_REG_PWM_ENABLE[nr]);
1415 data->pwm_mode[nr] = val;
1416 reg &= ~(1 << W83627EHF_PWM_MODE_SHIFT[nr]);
1417 if (!val)
1418 reg |= 1 << W83627EHF_PWM_MODE_SHIFT[nr];
1419 w83627ehf_write_value(data, W83627EHF_REG_PWM_ENABLE[nr], reg);
1420 mutex_unlock(&data->update_lock);
1421 return count;
1422 }
1423
1424 static ssize_t
1425 store_pwm(struct device *dev, struct device_attribute *attr,
1426 const char *buf, size_t count)
1427 {
1428 struct w83627ehf_data *data = dev_get_drvdata(dev);
1429 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1430 int nr = sensor_attr->index;
1431 unsigned long val;
1432 int err;
1433
1434 err = kstrtoul(buf, 10, &val);
1435 if (err < 0)
1436 return err;
1437
1438 val = SENSORS_LIMIT(val, 0, 255);
1439
1440 mutex_lock(&data->update_lock);
1441 data->pwm[nr] = val;
1442 w83627ehf_write_value(data, data->REG_PWM[nr], val);
1443 mutex_unlock(&data->update_lock);
1444 return count;
1445 }
1446
1447 static ssize_t
1448 store_pwm_enable(struct device *dev, struct device_attribute *attr,
1449 const char *buf, size_t count)
1450 {
1451 struct w83627ehf_data *data = dev_get_drvdata(dev);
1452 struct w83627ehf_sio_data *sio_data = dev->platform_data;
1453 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1454 int nr = sensor_attr->index;
1455 unsigned long val;
1456 int err;
1457 u16 reg;
1458
1459 err = kstrtoul(buf, 10, &val);
1460 if (err < 0)
1461 return err;
1462
1463 if (!val || (val > 4 && val != data->pwm_enable_orig[nr]))
1464 return -EINVAL;
1465 /* SmartFan III mode is not supported on NCT6776F */
1466 if (sio_data->kind == nct6776 && val == 4)
1467 return -EINVAL;
1468
1469 mutex_lock(&data->update_lock);
1470 data->pwm_enable[nr] = val;
1471 if (sio_data->kind == nct6775 || sio_data->kind == nct6776) {
1472 reg = w83627ehf_read_value(data,
1473 NCT6775_REG_FAN_MODE[nr]);
1474 reg &= 0x0f;
1475 reg |= (val - 1) << 4;
1476 w83627ehf_write_value(data,
1477 NCT6775_REG_FAN_MODE[nr], reg);
1478 } else {
1479 reg = w83627ehf_read_value(data, W83627EHF_REG_PWM_ENABLE[nr]);
1480 reg &= ~(0x03 << W83627EHF_PWM_ENABLE_SHIFT[nr]);
1481 reg |= (val - 1) << W83627EHF_PWM_ENABLE_SHIFT[nr];
1482 w83627ehf_write_value(data, W83627EHF_REG_PWM_ENABLE[nr], reg);
1483 }
1484 mutex_unlock(&data->update_lock);
1485 return count;
1486 }
1487
1488
1489 #define show_tol_temp(reg) \
1490 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
1491 char *buf) \
1492 { \
1493 struct w83627ehf_data *data = w83627ehf_update_device(dev); \
1494 struct sensor_device_attribute *sensor_attr = \
1495 to_sensor_dev_attr(attr); \
1496 int nr = sensor_attr->index; \
1497 return sprintf(buf, "%d\n", data->reg[nr] * 1000); \
1498 }
1499
1500 show_tol_temp(tolerance)
1501 show_tol_temp(target_temp)
1502
1503 static ssize_t
1504 store_target_temp(struct device *dev, struct device_attribute *attr,
1505 const char *buf, size_t count)
1506 {
1507 struct w83627ehf_data *data = dev_get_drvdata(dev);
1508 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1509 int nr = sensor_attr->index;
1510 long val;
1511 int err;
1512
1513 err = kstrtol(buf, 10, &val);
1514 if (err < 0)
1515 return err;
1516
1517 val = SENSORS_LIMIT(DIV_ROUND_CLOSEST(val, 1000), 0, 127);
1518
1519 mutex_lock(&data->update_lock);
1520 data->target_temp[nr] = val;
1521 w83627ehf_write_value(data, data->REG_TARGET[nr], val);
1522 mutex_unlock(&data->update_lock);
1523 return count;
1524 }
1525
1526 static ssize_t
1527 store_tolerance(struct device *dev, struct device_attribute *attr,
1528 const char *buf, size_t count)
1529 {
1530 struct w83627ehf_data *data = dev_get_drvdata(dev);
1531 struct w83627ehf_sio_data *sio_data = dev->platform_data;
1532 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1533 int nr = sensor_attr->index;
1534 u16 reg;
1535 long val;
1536 int err;
1537
1538 err = kstrtol(buf, 10, &val);
1539 if (err < 0)
1540 return err;
1541
1542 /* Limit the temp to 0C - 15C */
1543 val = SENSORS_LIMIT(DIV_ROUND_CLOSEST(val, 1000), 0, 15);
1544
1545 mutex_lock(&data->update_lock);
1546 if (sio_data->kind == nct6775 || sio_data->kind == nct6776) {
1547 /* Limit tolerance further for NCT6776F */
1548 if (sio_data->kind == nct6776 && val > 7)
1549 val = 7;
1550 reg = w83627ehf_read_value(data, NCT6775_REG_FAN_MODE[nr]);
1551 reg = (reg & 0xf0) | val;
1552 w83627ehf_write_value(data, NCT6775_REG_FAN_MODE[nr], reg);
1553 } else {
1554 reg = w83627ehf_read_value(data, W83627EHF_REG_TOLERANCE[nr]);
1555 if (nr == 1)
1556 reg = (reg & 0x0f) | (val << 4);
1557 else
1558 reg = (reg & 0xf0) | val;
1559 w83627ehf_write_value(data, W83627EHF_REG_TOLERANCE[nr], reg);
1560 }
1561 data->tolerance[nr] = val;
1562 mutex_unlock(&data->update_lock);
1563 return count;
1564 }
1565
1566 static struct sensor_device_attribute sda_pwm[] = {
1567 SENSOR_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 0),
1568 SENSOR_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 1),
1569 SENSOR_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 2),
1570 SENSOR_ATTR(pwm4, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 3),
1571 };
1572
1573 static struct sensor_device_attribute sda_pwm_mode[] = {
1574 SENSOR_ATTR(pwm1_mode, S_IWUSR | S_IRUGO, show_pwm_mode,
1575 store_pwm_mode, 0),
1576 SENSOR_ATTR(pwm2_mode, S_IWUSR | S_IRUGO, show_pwm_mode,
1577 store_pwm_mode, 1),
1578 SENSOR_ATTR(pwm3_mode, S_IWUSR | S_IRUGO, show_pwm_mode,
1579 store_pwm_mode, 2),
1580 SENSOR_ATTR(pwm4_mode, S_IWUSR | S_IRUGO, show_pwm_mode,
1581 store_pwm_mode, 3),
1582 };
1583
1584 static struct sensor_device_attribute sda_pwm_enable[] = {
1585 SENSOR_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, show_pwm_enable,
1586 store_pwm_enable, 0),
1587 SENSOR_ATTR(pwm2_enable, S_IWUSR | S_IRUGO, show_pwm_enable,
1588 store_pwm_enable, 1),
1589 SENSOR_ATTR(pwm3_enable, S_IWUSR | S_IRUGO, show_pwm_enable,
1590 store_pwm_enable, 2),
1591 SENSOR_ATTR(pwm4_enable, S_IWUSR | S_IRUGO, show_pwm_enable,
1592 store_pwm_enable, 3),
1593 };
1594
1595 static struct sensor_device_attribute sda_target_temp[] = {
1596 SENSOR_ATTR(pwm1_target, S_IWUSR | S_IRUGO, show_target_temp,
1597 store_target_temp, 0),
1598 SENSOR_ATTR(pwm2_target, S_IWUSR | S_IRUGO, show_target_temp,
1599 store_target_temp, 1),
1600 SENSOR_ATTR(pwm3_target, S_IWUSR | S_IRUGO, show_target_temp,
1601 store_target_temp, 2),
1602 SENSOR_ATTR(pwm4_target, S_IWUSR | S_IRUGO, show_target_temp,
1603 store_target_temp, 3),
1604 };
1605
1606 static struct sensor_device_attribute sda_tolerance[] = {
1607 SENSOR_ATTR(pwm1_tolerance, S_IWUSR | S_IRUGO, show_tolerance,
1608 store_tolerance, 0),
1609 SENSOR_ATTR(pwm2_tolerance, S_IWUSR | S_IRUGO, show_tolerance,
1610 store_tolerance, 1),
1611 SENSOR_ATTR(pwm3_tolerance, S_IWUSR | S_IRUGO, show_tolerance,
1612 store_tolerance, 2),
1613 SENSOR_ATTR(pwm4_tolerance, S_IWUSR | S_IRUGO, show_tolerance,
1614 store_tolerance, 3),
1615 };
1616
1617 /* Smart Fan registers */
1618
1619 #define fan_functions(reg, REG) \
1620 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
1621 char *buf) \
1622 { \
1623 struct w83627ehf_data *data = w83627ehf_update_device(dev); \
1624 struct sensor_device_attribute *sensor_attr = \
1625 to_sensor_dev_attr(attr); \
1626 int nr = sensor_attr->index; \
1627 return sprintf(buf, "%d\n", data->reg[nr]); \
1628 } \
1629 static ssize_t \
1630 store_##reg(struct device *dev, struct device_attribute *attr, \
1631 const char *buf, size_t count) \
1632 { \
1633 struct w83627ehf_data *data = dev_get_drvdata(dev); \
1634 struct sensor_device_attribute *sensor_attr = \
1635 to_sensor_dev_attr(attr); \
1636 int nr = sensor_attr->index; \
1637 unsigned long val; \
1638 int err; \
1639 err = kstrtoul(buf, 10, &val); \
1640 if (err < 0) \
1641 return err; \
1642 val = SENSORS_LIMIT(val, 1, 255); \
1643 mutex_lock(&data->update_lock); \
1644 data->reg[nr] = val; \
1645 w83627ehf_write_value(data, data->REG_##REG[nr], val); \
1646 mutex_unlock(&data->update_lock); \
1647 return count; \
1648 }
1649
1650 fan_functions(fan_start_output, FAN_START_OUTPUT)
1651 fan_functions(fan_stop_output, FAN_STOP_OUTPUT)
1652 fan_functions(fan_max_output, FAN_MAX_OUTPUT)
1653 fan_functions(fan_step_output, FAN_STEP_OUTPUT)
1654
1655 #define fan_time_functions(reg, REG) \
1656 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
1657 char *buf) \
1658 { \
1659 struct w83627ehf_data *data = w83627ehf_update_device(dev); \
1660 struct sensor_device_attribute *sensor_attr = \
1661 to_sensor_dev_attr(attr); \
1662 int nr = sensor_attr->index; \
1663 return sprintf(buf, "%d\n", \
1664 step_time_from_reg(data->reg[nr], \
1665 data->pwm_mode[nr])); \
1666 } \
1667 \
1668 static ssize_t \
1669 store_##reg(struct device *dev, struct device_attribute *attr, \
1670 const char *buf, size_t count) \
1671 { \
1672 struct w83627ehf_data *data = dev_get_drvdata(dev); \
1673 struct sensor_device_attribute *sensor_attr = \
1674 to_sensor_dev_attr(attr); \
1675 int nr = sensor_attr->index; \
1676 unsigned long val; \
1677 int err; \
1678 err = kstrtoul(buf, 10, &val); \
1679 if (err < 0) \
1680 return err; \
1681 val = step_time_to_reg(val, data->pwm_mode[nr]); \
1682 mutex_lock(&data->update_lock); \
1683 data->reg[nr] = val; \
1684 w83627ehf_write_value(data, data->REG_##REG[nr], val); \
1685 mutex_unlock(&data->update_lock); \
1686 return count; \
1687 } \
1688
1689 fan_time_functions(fan_stop_time, FAN_STOP_TIME)
1690
1691 static ssize_t show_name(struct device *dev, struct device_attribute *attr,
1692 char *buf)
1693 {
1694 struct w83627ehf_data *data = dev_get_drvdata(dev);
1695
1696 return sprintf(buf, "%s\n", data->name);
1697 }
1698 static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
1699
1700 static struct sensor_device_attribute sda_sf3_arrays_fan4[] = {
1701 SENSOR_ATTR(pwm4_stop_time, S_IWUSR | S_IRUGO, show_fan_stop_time,
1702 store_fan_stop_time, 3),
1703 SENSOR_ATTR(pwm4_start_output, S_IWUSR | S_IRUGO, show_fan_start_output,
1704 store_fan_start_output, 3),
1705 SENSOR_ATTR(pwm4_stop_output, S_IWUSR | S_IRUGO, show_fan_stop_output,
1706 store_fan_stop_output, 3),
1707 SENSOR_ATTR(pwm4_max_output, S_IWUSR | S_IRUGO, show_fan_max_output,
1708 store_fan_max_output, 3),
1709 SENSOR_ATTR(pwm4_step_output, S_IWUSR | S_IRUGO, show_fan_step_output,
1710 store_fan_step_output, 3),
1711 };
1712
1713 static struct sensor_device_attribute sda_sf3_arrays_fan3[] = {
1714 SENSOR_ATTR(pwm3_stop_time, S_IWUSR | S_IRUGO, show_fan_stop_time,
1715 store_fan_stop_time, 2),
1716 SENSOR_ATTR(pwm3_start_output, S_IWUSR | S_IRUGO, show_fan_start_output,
1717 store_fan_start_output, 2),
1718 SENSOR_ATTR(pwm3_stop_output, S_IWUSR | S_IRUGO, show_fan_stop_output,
1719 store_fan_stop_output, 2),
1720 };
1721
1722 static struct sensor_device_attribute sda_sf3_arrays[] = {
1723 SENSOR_ATTR(pwm1_stop_time, S_IWUSR | S_IRUGO, show_fan_stop_time,
1724 store_fan_stop_time, 0),
1725 SENSOR_ATTR(pwm2_stop_time, S_IWUSR | S_IRUGO, show_fan_stop_time,
1726 store_fan_stop_time, 1),
1727 SENSOR_ATTR(pwm1_start_output, S_IWUSR | S_IRUGO, show_fan_start_output,
1728 store_fan_start_output, 0),
1729 SENSOR_ATTR(pwm2_start_output, S_IWUSR | S_IRUGO, show_fan_start_output,
1730 store_fan_start_output, 1),
1731 SENSOR_ATTR(pwm1_stop_output, S_IWUSR | S_IRUGO, show_fan_stop_output,
1732 store_fan_stop_output, 0),
1733 SENSOR_ATTR(pwm2_stop_output, S_IWUSR | S_IRUGO, show_fan_stop_output,
1734 store_fan_stop_output, 1),
1735 };
1736
1737
1738 /*
1739 * pwm1 and pwm3 don't support max and step settings on all chips.
1740 * Need to check support while generating/removing attribute files.
1741 */
1742 static struct sensor_device_attribute sda_sf3_max_step_arrays[] = {
1743 SENSOR_ATTR(pwm1_max_output, S_IWUSR | S_IRUGO, show_fan_max_output,
1744 store_fan_max_output, 0),
1745 SENSOR_ATTR(pwm1_step_output, S_IWUSR | S_IRUGO, show_fan_step_output,
1746 store_fan_step_output, 0),
1747 SENSOR_ATTR(pwm2_max_output, S_IWUSR | S_IRUGO, show_fan_max_output,
1748 store_fan_max_output, 1),
1749 SENSOR_ATTR(pwm2_step_output, S_IWUSR | S_IRUGO, show_fan_step_output,
1750 store_fan_step_output, 1),
1751 SENSOR_ATTR(pwm3_max_output, S_IWUSR | S_IRUGO, show_fan_max_output,
1752 store_fan_max_output, 2),
1753 SENSOR_ATTR(pwm3_step_output, S_IWUSR | S_IRUGO, show_fan_step_output,
1754 store_fan_step_output, 2),
1755 };
1756
1757 static ssize_t
1758 show_vid(struct device *dev, struct device_attribute *attr, char *buf)
1759 {
1760 struct w83627ehf_data *data = dev_get_drvdata(dev);
1761 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
1762 }
1763 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
1764
1765
1766 /* Case open detection */
1767
1768 static ssize_t
1769 show_caseopen(struct device *dev, struct device_attribute *attr, char *buf)
1770 {
1771 struct w83627ehf_data *data = w83627ehf_update_device(dev);
1772
1773 return sprintf(buf, "%d\n",
1774 !!(data->caseopen & to_sensor_dev_attr_2(attr)->index));
1775 }
1776
1777 static ssize_t
1778 clear_caseopen(struct device *dev, struct device_attribute *attr,
1779 const char *buf, size_t count)
1780 {
1781 struct w83627ehf_data *data = dev_get_drvdata(dev);
1782 unsigned long val;
1783 u16 reg, mask;
1784
1785 if (kstrtoul(buf, 10, &val) || val != 0)
1786 return -EINVAL;
1787
1788 mask = to_sensor_dev_attr_2(attr)->nr;
1789
1790 mutex_lock(&data->update_lock);
1791 reg = w83627ehf_read_value(data, W83627EHF_REG_CASEOPEN_CLR);
1792 w83627ehf_write_value(data, W83627EHF_REG_CASEOPEN_CLR, reg | mask);
1793 w83627ehf_write_value(data, W83627EHF_REG_CASEOPEN_CLR, reg & ~mask);
1794 data->valid = 0; /* Force cache refresh */
1795 mutex_unlock(&data->update_lock);
1796
1797 return count;
1798 }
1799
1800 static struct sensor_device_attribute_2 sda_caseopen[] = {
1801 SENSOR_ATTR_2(intrusion0_alarm, S_IWUSR | S_IRUGO, show_caseopen,
1802 clear_caseopen, 0x80, 0x10),
1803 SENSOR_ATTR_2(intrusion1_alarm, S_IWUSR | S_IRUGO, show_caseopen,
1804 clear_caseopen, 0x40, 0x40),
1805 };
1806
1807 /*
1808 * Driver and device management
1809 */
1810
1811 static void w83627ehf_device_remove_files(struct device *dev)
1812 {
1813 /*
1814 * some entries in the following arrays may not have been used in
1815 * device_create_file(), but device_remove_file() will ignore them
1816 */
1817 int i;
1818 struct w83627ehf_data *data = dev_get_drvdata(dev);
1819
1820 for (i = 0; i < ARRAY_SIZE(sda_sf3_arrays); i++)
1821 device_remove_file(dev, &sda_sf3_arrays[i].dev_attr);
1822 for (i = 0; i < ARRAY_SIZE(sda_sf3_max_step_arrays); i++) {
1823 struct sensor_device_attribute *attr =
1824 &sda_sf3_max_step_arrays[i];
1825 if (data->REG_FAN_STEP_OUTPUT &&
1826 data->REG_FAN_STEP_OUTPUT[attr->index] != 0xff)
1827 device_remove_file(dev, &attr->dev_attr);
1828 }
1829 for (i = 0; i < ARRAY_SIZE(sda_sf3_arrays_fan3); i++)
1830 device_remove_file(dev, &sda_sf3_arrays_fan3[i].dev_attr);
1831 for (i = 0; i < ARRAY_SIZE(sda_sf3_arrays_fan4); i++)
1832 device_remove_file(dev, &sda_sf3_arrays_fan4[i].dev_attr);
1833 for (i = 0; i < data->in_num; i++) {
1834 if ((i == 6) && data->in6_skip)
1835 continue;
1836 device_remove_file(dev, &sda_in_input[i].dev_attr);
1837 device_remove_file(dev, &sda_in_alarm[i].dev_attr);
1838 device_remove_file(dev, &sda_in_min[i].dev_attr);
1839 device_remove_file(dev, &sda_in_max[i].dev_attr);
1840 }
1841 for (i = 0; i < 5; i++) {
1842 device_remove_file(dev, &sda_fan_input[i].dev_attr);
1843 device_remove_file(dev, &sda_fan_alarm[i].dev_attr);
1844 device_remove_file(dev, &sda_fan_div[i].dev_attr);
1845 device_remove_file(dev, &sda_fan_min[i].dev_attr);
1846 }
1847 for (i = 0; i < data->pwm_num; i++) {
1848 device_remove_file(dev, &sda_pwm[i].dev_attr);
1849 device_remove_file(dev, &sda_pwm_mode[i].dev_attr);
1850 device_remove_file(dev, &sda_pwm_enable[i].dev_attr);
1851 device_remove_file(dev, &sda_target_temp[i].dev_attr);
1852 device_remove_file(dev, &sda_tolerance[i].dev_attr);
1853 }
1854 for (i = 0; i < NUM_REG_TEMP; i++) {
1855 if (!(data->have_temp & (1 << i)))
1856 continue;
1857 device_remove_file(dev, &sda_temp_input[i].dev_attr);
1858 device_remove_file(dev, &sda_temp_label[i].dev_attr);
1859 if (i == 2 && data->temp3_val_only)
1860 continue;
1861 device_remove_file(dev, &sda_temp_max[i].dev_attr);
1862 device_remove_file(dev, &sda_temp_max_hyst[i].dev_attr);
1863 if (i > 2)
1864 continue;
1865 device_remove_file(dev, &sda_temp_alarm[i].dev_attr);
1866 device_remove_file(dev, &sda_temp_type[i].dev_attr);
1867 device_remove_file(dev, &sda_temp_offset[i].dev_attr);
1868 }
1869
1870 device_remove_file(dev, &sda_caseopen[0].dev_attr);
1871 device_remove_file(dev, &sda_caseopen[1].dev_attr);
1872
1873 device_remove_file(dev, &dev_attr_name);
1874 device_remove_file(dev, &dev_attr_cpu0_vid);
1875 }
1876
1877 /* Get the monitoring functions started */
1878 static inline void w83627ehf_init_device(struct w83627ehf_data *data,
1879 enum kinds kind)
1880 {
1881 int i;
1882 u8 tmp, diode;
1883
1884 /* Start monitoring is needed */
1885 tmp = w83627ehf_read_value(data, W83627EHF_REG_CONFIG);
1886 if (!(tmp & 0x01))
1887 w83627ehf_write_value(data, W83627EHF_REG_CONFIG,
1888 tmp | 0x01);
1889
1890 /* Enable temperature sensors if needed */
1891 for (i = 0; i < NUM_REG_TEMP; i++) {
1892 if (!(data->have_temp & (1 << i)))
1893 continue;
1894 if (!data->reg_temp_config[i])
1895 continue;
1896 tmp = w83627ehf_read_value(data,
1897 data->reg_temp_config[i]);
1898 if (tmp & 0x01)
1899 w83627ehf_write_value(data,
1900 data->reg_temp_config[i],
1901 tmp & 0xfe);
1902 }
1903
1904 /* Enable VBAT monitoring if needed */
1905 tmp = w83627ehf_read_value(data, W83627EHF_REG_VBAT);
1906 if (!(tmp & 0x01))
1907 w83627ehf_write_value(data, W83627EHF_REG_VBAT, tmp | 0x01);
1908
1909 /* Get thermal sensor types */
1910 switch (kind) {
1911 case w83627ehf:
1912 diode = w83627ehf_read_value(data, W83627EHF_REG_DIODE);
1913 break;
1914 case w83627uhg:
1915 diode = 0x00;
1916 break;
1917 default:
1918 diode = 0x70;
1919 }
1920 for (i = 0; i < 3; i++) {
1921 const char *label = NULL;
1922
1923 if (data->temp_label)
1924 label = data->temp_label[data->temp_src[i]];
1925
1926 /* Digital source overrides analog type */
1927 if (label && strncmp(label, "PECI", 4) == 0)
1928 data->temp_type[i] = 6;
1929 else if (label && strncmp(label, "AMD", 3) == 0)
1930 data->temp_type[i] = 5;
1931 else if ((tmp & (0x02 << i)))
1932 data->temp_type[i] = (diode & (0x10 << i)) ? 1 : 3;
1933 else
1934 data->temp_type[i] = 4; /* thermistor */
1935 }
1936 }
1937
1938 static void w82627ehf_swap_tempreg(struct w83627ehf_data *data,
1939 int r1, int r2)
1940 {
1941 u16 tmp;
1942
1943 tmp = data->temp_src[r1];
1944 data->temp_src[r1] = data->temp_src[r2];
1945 data->temp_src[r2] = tmp;
1946
1947 tmp = data->reg_temp[r1];
1948 data->reg_temp[r1] = data->reg_temp[r2];
1949 data->reg_temp[r2] = tmp;
1950
1951 tmp = data->reg_temp_over[r1];
1952 data->reg_temp_over[r1] = data->reg_temp_over[r2];
1953 data->reg_temp_over[r2] = tmp;
1954
1955 tmp = data->reg_temp_hyst[r1];
1956 data->reg_temp_hyst[r1] = data->reg_temp_hyst[r2];
1957 data->reg_temp_hyst[r2] = tmp;
1958
1959 tmp = data->reg_temp_config[r1];
1960 data->reg_temp_config[r1] = data->reg_temp_config[r2];
1961 data->reg_temp_config[r2] = tmp;
1962 }
1963
1964 static void
1965 w83627ehf_set_temp_reg_ehf(struct w83627ehf_data *data, int n_temp)
1966 {
1967 int i;
1968
1969 for (i = 0; i < n_temp; i++) {
1970 data->reg_temp[i] = W83627EHF_REG_TEMP[i];
1971 data->reg_temp_over[i] = W83627EHF_REG_TEMP_OVER[i];
1972 data->reg_temp_hyst[i] = W83627EHF_REG_TEMP_HYST[i];
1973 data->reg_temp_config[i] = W83627EHF_REG_TEMP_CONFIG[i];
1974 }
1975 }
1976
1977 static void
1978 w83627ehf_check_fan_inputs(const struct w83627ehf_sio_data *sio_data,
1979 struct w83627ehf_data *data)
1980 {
1981 int fan3pin, fan4pin, fan4min, fan5pin, regval;
1982
1983 /* The W83627UHG is simple, only two fan inputs, no config */
1984 if (sio_data->kind == w83627uhg) {
1985 data->has_fan = 0x03; /* fan1 and fan2 */
1986 data->has_fan_min = 0x03;
1987 return;
1988 }
1989
1990 superio_enter(sio_data->sioreg);
1991
1992 /* fan4 and fan5 share some pins with the GPIO and serial flash */
1993 if (sio_data->kind == nct6775) {
1994 /* On NCT6775, fan4 shares pins with the fdc interface */
1995 fan3pin = 1;
1996 fan4pin = !(superio_inb(sio_data->sioreg, 0x2A) & 0x80);
1997 fan4min = 0;
1998 fan5pin = 0;
1999 } else if (sio_data->kind == nct6776) {
2000 bool gpok = superio_inb(sio_data->sioreg, 0x27) & 0x80;
2001
2002 superio_select(sio_data->sioreg, W83627EHF_LD_HWM);
2003 regval = superio_inb(sio_data->sioreg, SIO_REG_ENABLE);
2004
2005 if (regval & 0x80)
2006 fan3pin = gpok;
2007 else
2008 fan3pin = !(superio_inb(sio_data->sioreg, 0x24) & 0x40);
2009
2010 if (regval & 0x40)
2011 fan4pin = gpok;
2012 else
2013 fan4pin = !!(superio_inb(sio_data->sioreg, 0x1C) & 0x01);
2014
2015 if (regval & 0x20)
2016 fan5pin = gpok;
2017 else
2018 fan5pin = !!(superio_inb(sio_data->sioreg, 0x1C) & 0x02);
2019
2020 fan4min = fan4pin;
2021 } else if (sio_data->kind == w83667hg || sio_data->kind == w83667hg_b) {
2022 fan3pin = 1;
2023 fan4pin = superio_inb(sio_data->sioreg, 0x27) & 0x40;
2024 fan5pin = superio_inb(sio_data->sioreg, 0x27) & 0x20;
2025 fan4min = fan4pin;
2026 } else {
2027 fan3pin = 1;
2028 fan4pin = !(superio_inb(sio_data->sioreg, 0x29) & 0x06);
2029 fan5pin = !(superio_inb(sio_data->sioreg, 0x24) & 0x02);
2030 fan4min = fan4pin;
2031 }
2032
2033 superio_exit(sio_data->sioreg);
2034
2035 data->has_fan = data->has_fan_min = 0x03; /* fan1 and fan2 */
2036 data->has_fan |= (fan3pin << 2);
2037 data->has_fan_min |= (fan3pin << 2);
2038
2039 if (sio_data->kind == nct6775 || sio_data->kind == nct6776) {
2040 /*
2041 * NCT6775F and NCT6776F don't have the W83627EHF_REG_FANDIV1
2042 * register
2043 */
2044 data->has_fan |= (fan4pin << 3) | (fan5pin << 4);
2045 data->has_fan_min |= (fan4min << 3) | (fan5pin << 4);
2046 } else {
2047 /*
2048 * It looks like fan4 and fan5 pins can be alternatively used
2049 * as fan on/off switches, but fan5 control is write only :/
2050 * We assume that if the serial interface is disabled, designers
2051 * connected fan5 as input unless they are emitting log 1, which
2052 * is not the default.
2053 */
2054 regval = w83627ehf_read_value(data, W83627EHF_REG_FANDIV1);
2055 if ((regval & (1 << 2)) && fan4pin) {
2056 data->has_fan |= (1 << 3);
2057 data->has_fan_min |= (1 << 3);
2058 }
2059 if (!(regval & (1 << 1)) && fan5pin) {
2060 data->has_fan |= (1 << 4);
2061 data->has_fan_min |= (1 << 4);
2062 }
2063 }
2064 }
2065
2066 static int w83627ehf_probe(struct platform_device *pdev)
2067 {
2068 struct device *dev = &pdev->dev;
2069 struct w83627ehf_sio_data *sio_data = dev->platform_data;
2070 struct w83627ehf_data *data;
2071 struct resource *res;
2072 u8 en_vrm10;
2073 int i, err = 0;
2074
2075 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
2076 if (!request_region(res->start, IOREGION_LENGTH, DRVNAME)) {
2077 err = -EBUSY;
2078 dev_err(dev, "Failed to request region 0x%lx-0x%lx\n",
2079 (unsigned long)res->start,
2080 (unsigned long)res->start + IOREGION_LENGTH - 1);
2081 goto exit;
2082 }
2083
2084 data = devm_kzalloc(&pdev->dev, sizeof(struct w83627ehf_data),
2085 GFP_KERNEL);
2086 if (!data) {
2087 err = -ENOMEM;
2088 goto exit_release;
2089 }
2090
2091 data->addr = res->start;
2092 mutex_init(&data->lock);
2093 mutex_init(&data->update_lock);
2094 data->name = w83627ehf_device_names[sio_data->kind];
2095 data->bank = 0xff; /* Force initial bank selection */
2096 platform_set_drvdata(pdev, data);
2097
2098 /* 627EHG and 627EHF have 10 voltage inputs; 627DHG and 667HG have 9 */
2099 data->in_num = (sio_data->kind == w83627ehf) ? 10 : 9;
2100 /* 667HG, NCT6775F, and NCT6776F have 3 pwms, and 627UHG has only 2 */
2101 switch (sio_data->kind) {
2102 default:
2103 data->pwm_num = 4;
2104 break;
2105 case w83667hg:
2106 case w83667hg_b:
2107 case nct6775:
2108 case nct6776:
2109 data->pwm_num = 3;
2110 break;
2111 case w83627uhg:
2112 data->pwm_num = 2;
2113 break;
2114 }
2115
2116 /* Default to 3 temperature inputs, code below will adjust as needed */
2117 data->have_temp = 0x07;
2118
2119 /* Deal with temperature register setup first. */
2120 if (sio_data->kind == nct6775 || sio_data->kind == nct6776) {
2121 int mask = 0;
2122
2123 /*
2124 * Display temperature sensor output only if it monitors
2125 * a source other than one already reported. Always display
2126 * first three temperature registers, though.
2127 */
2128 for (i = 0; i < NUM_REG_TEMP; i++) {
2129 u8 src;
2130
2131 data->reg_temp[i] = NCT6775_REG_TEMP[i];
2132 data->reg_temp_over[i] = NCT6775_REG_TEMP_OVER[i];
2133 data->reg_temp_hyst[i] = NCT6775_REG_TEMP_HYST[i];
2134 data->reg_temp_config[i] = NCT6775_REG_TEMP_CONFIG[i];
2135
2136 src = w83627ehf_read_value(data,
2137 NCT6775_REG_TEMP_SOURCE[i]);
2138 src &= 0x1f;
2139 if (src && !(mask & (1 << src))) {
2140 data->have_temp |= 1 << i;
2141 mask |= 1 << src;
2142 }
2143
2144 data->temp_src[i] = src;
2145
2146 /*
2147 * Now do some register swapping if index 0..2 don't
2148 * point to SYSTIN(1), CPUIN(2), and AUXIN(3).
2149 * Idea is to have the first three attributes
2150 * report SYSTIN, CPUIN, and AUXIN if possible
2151 * without overriding the basic system configuration.
2152 */
2153 if (i > 0 && data->temp_src[0] != 1
2154 && data->temp_src[i] == 1)
2155 w82627ehf_swap_tempreg(data, 0, i);
2156 if (i > 1 && data->temp_src[1] != 2
2157 && data->temp_src[i] == 2)
2158 w82627ehf_swap_tempreg(data, 1, i);
2159 if (i > 2 && data->temp_src[2] != 3
2160 && data->temp_src[i] == 3)
2161 w82627ehf_swap_tempreg(data, 2, i);
2162 }
2163 if (sio_data->kind == nct6776) {
2164 /*
2165 * On NCT6776, AUXTIN and VIN3 pins are shared.
2166 * Only way to detect it is to check if AUXTIN is used
2167 * as a temperature source, and if that source is
2168 * enabled.
2169 *
2170 * If that is the case, disable in6, which reports VIN3.
2171 * Otherwise disable temp3.
2172 */
2173 if (data->temp_src[2] == 3) {
2174 u8 reg;
2175
2176 if (data->reg_temp_config[2])
2177 reg = w83627ehf_read_value(data,
2178 data->reg_temp_config[2]);
2179 else
2180 reg = 0; /* Assume AUXTIN is used */
2181
2182 if (reg & 0x01)
2183 data->have_temp &= ~(1 << 2);
2184 else
2185 data->in6_skip = 1;
2186 }
2187 data->temp_label = nct6776_temp_label;
2188 } else {
2189 data->temp_label = nct6775_temp_label;
2190 }
2191 data->have_temp_offset = data->have_temp & 0x07;
2192 for (i = 0; i < 3; i++) {
2193 if (data->temp_src[i] > 3)
2194 data->have_temp_offset &= ~(1 << i);
2195 }
2196 } else if (sio_data->kind == w83667hg_b) {
2197 u8 reg;
2198
2199 w83627ehf_set_temp_reg_ehf(data, 4);
2200
2201 /*
2202 * Temperature sources are selected with bank 0, registers 0x49
2203 * and 0x4a.
2204 */
2205 reg = w83627ehf_read_value(data, 0x4a);
2206 data->temp_src[0] = reg >> 5;
2207 reg = w83627ehf_read_value(data, 0x49);
2208 data->temp_src[1] = reg & 0x07;
2209 data->temp_src[2] = (reg >> 4) & 0x07;
2210
2211 /*
2212 * W83667HG-B has another temperature register at 0x7e.
2213 * The temperature source is selected with register 0x7d.
2214 * Support it if the source differs from already reported
2215 * sources.
2216 */
2217 reg = w83627ehf_read_value(data, 0x7d);
2218 reg &= 0x07;
2219 if (reg != data->temp_src[0] && reg != data->temp_src[1]
2220 && reg != data->temp_src[2]) {
2221 data->temp_src[3] = reg;
2222 data->have_temp |= 1 << 3;
2223 }
2224
2225 /*
2226 * Chip supports either AUXTIN or VIN3. Try to find out which
2227 * one.
2228 */
2229 reg = w83627ehf_read_value(data, W83627EHF_REG_TEMP_CONFIG[2]);
2230 if (data->temp_src[2] == 2 && (reg & 0x01))
2231 data->have_temp &= ~(1 << 2);
2232
2233 if ((data->temp_src[2] == 2 && (data->have_temp & (1 << 2)))
2234 || (data->temp_src[3] == 2 && (data->have_temp & (1 << 3))))
2235 data->in6_skip = 1;
2236
2237 data->temp_label = w83667hg_b_temp_label;
2238 data->have_temp_offset = data->have_temp & 0x07;
2239 for (i = 0; i < 3; i++) {
2240 if (data->temp_src[i] > 2)
2241 data->have_temp_offset &= ~(1 << i);
2242 }
2243 } else if (sio_data->kind == w83627uhg) {
2244 u8 reg;
2245
2246 w83627ehf_set_temp_reg_ehf(data, 3);
2247
2248 /*
2249 * Temperature sources for temp2 and temp3 are selected with
2250 * bank 0, registers 0x49 and 0x4a.
2251 */
2252 data->temp_src[0] = 0; /* SYSTIN */
2253 reg = w83627ehf_read_value(data, 0x49) & 0x07;
2254 /* Adjust to have the same mapping as other source registers */
2255 if (reg == 0)
2256 data->temp_src[1] = 1;
2257 else if (reg >= 2 && reg <= 5)
2258 data->temp_src[1] = reg + 2;
2259 else /* should never happen */
2260 data->have_temp &= ~(1 << 1);
2261 reg = w83627ehf_read_value(data, 0x4a);
2262 data->temp_src[2] = reg >> 5;
2263
2264 /*
2265 * Skip temp3 if source is invalid or the same as temp1
2266 * or temp2.
2267 */
2268 if (data->temp_src[2] == 2 || data->temp_src[2] == 3 ||
2269 data->temp_src[2] == data->temp_src[0] ||
2270 ((data->have_temp & (1 << 1)) &&
2271 data->temp_src[2] == data->temp_src[1]))
2272 data->have_temp &= ~(1 << 2);
2273 else
2274 data->temp3_val_only = 1; /* No limit regs */
2275
2276 data->in6_skip = 1; /* No VIN3 */
2277
2278 data->temp_label = w83667hg_b_temp_label;
2279 data->have_temp_offset = data->have_temp & 0x03;
2280 for (i = 0; i < 3; i++) {
2281 if (data->temp_src[i] > 1)
2282 data->have_temp_offset &= ~(1 << i);
2283 }
2284 } else {
2285 w83627ehf_set_temp_reg_ehf(data, 3);
2286
2287 /* Temperature sources are fixed */
2288
2289 if (sio_data->kind == w83667hg) {
2290 u8 reg;
2291
2292 /*
2293 * Chip supports either AUXTIN or VIN3. Try to find
2294 * out which one.
2295 */
2296 reg = w83627ehf_read_value(data,
2297 W83627EHF_REG_TEMP_CONFIG[2]);
2298 if (reg & 0x01)
2299 data->have_temp &= ~(1 << 2);
2300 else
2301 data->in6_skip = 1;
2302 }
2303 data->have_temp_offset = data->have_temp & 0x07;
2304 }
2305
2306 if (sio_data->kind == nct6775) {
2307 data->has_fan_div = true;
2308 data->fan_from_reg = fan_from_reg16;
2309 data->fan_from_reg_min = fan_from_reg8;
2310 data->REG_PWM = NCT6775_REG_PWM;
2311 data->REG_TARGET = NCT6775_REG_TARGET;
2312 data->REG_FAN = NCT6775_REG_FAN;
2313 data->REG_FAN_MIN = W83627EHF_REG_FAN_MIN;
2314 data->REG_FAN_START_OUTPUT = NCT6775_REG_FAN_START_OUTPUT;
2315 data->REG_FAN_STOP_OUTPUT = NCT6775_REG_FAN_STOP_OUTPUT;
2316 data->REG_FAN_STOP_TIME = NCT6775_REG_FAN_STOP_TIME;
2317 data->REG_FAN_MAX_OUTPUT = NCT6775_REG_FAN_MAX_OUTPUT;
2318 data->REG_FAN_STEP_OUTPUT = NCT6775_REG_FAN_STEP_OUTPUT;
2319 } else if (sio_data->kind == nct6776) {
2320 data->has_fan_div = false;
2321 data->fan_from_reg = fan_from_reg13;
2322 data->fan_from_reg_min = fan_from_reg13;
2323 data->REG_PWM = NCT6775_REG_PWM;
2324 data->REG_TARGET = NCT6775_REG_TARGET;
2325 data->REG_FAN = NCT6775_REG_FAN;
2326 data->REG_FAN_MIN = NCT6776_REG_FAN_MIN;
2327 data->REG_FAN_START_OUTPUT = NCT6775_REG_FAN_START_OUTPUT;
2328 data->REG_FAN_STOP_OUTPUT = NCT6775_REG_FAN_STOP_OUTPUT;
2329 data->REG_FAN_STOP_TIME = NCT6775_REG_FAN_STOP_TIME;
2330 } else if (sio_data->kind == w83667hg_b) {
2331 data->has_fan_div = true;
2332 data->fan_from_reg = fan_from_reg8;
2333 data->fan_from_reg_min = fan_from_reg8;
2334 data->REG_PWM = W83627EHF_REG_PWM;
2335 data->REG_TARGET = W83627EHF_REG_TARGET;
2336 data->REG_FAN = W83627EHF_REG_FAN;
2337 data->REG_FAN_MIN = W83627EHF_REG_FAN_MIN;
2338 data->REG_FAN_START_OUTPUT = W83627EHF_REG_FAN_START_OUTPUT;
2339 data->REG_FAN_STOP_OUTPUT = W83627EHF_REG_FAN_STOP_OUTPUT;
2340 data->REG_FAN_STOP_TIME = W83627EHF_REG_FAN_STOP_TIME;
2341 data->REG_FAN_MAX_OUTPUT =
2342 W83627EHF_REG_FAN_MAX_OUTPUT_W83667_B;
2343 data->REG_FAN_STEP_OUTPUT =
2344 W83627EHF_REG_FAN_STEP_OUTPUT_W83667_B;
2345 } else {
2346 data->has_fan_div = true;
2347 data->fan_from_reg = fan_from_reg8;
2348 data->fan_from_reg_min = fan_from_reg8;
2349 data->REG_PWM = W83627EHF_REG_PWM;
2350 data->REG_TARGET = W83627EHF_REG_TARGET;
2351 data->REG_FAN = W83627EHF_REG_FAN;
2352 data->REG_FAN_MIN = W83627EHF_REG_FAN_MIN;
2353 data->REG_FAN_START_OUTPUT = W83627EHF_REG_FAN_START_OUTPUT;
2354 data->REG_FAN_STOP_OUTPUT = W83627EHF_REG_FAN_STOP_OUTPUT;
2355 data->REG_FAN_STOP_TIME = W83627EHF_REG_FAN_STOP_TIME;
2356 data->REG_FAN_MAX_OUTPUT =
2357 W83627EHF_REG_FAN_MAX_OUTPUT_COMMON;
2358 data->REG_FAN_STEP_OUTPUT =
2359 W83627EHF_REG_FAN_STEP_OUTPUT_COMMON;
2360 }
2361
2362 /* Setup input voltage scaling factors */
2363 if (sio_data->kind == w83627uhg)
2364 data->scale_in = scale_in_w83627uhg;
2365 else
2366 data->scale_in = scale_in_common;
2367
2368 /* Initialize the chip */
2369 w83627ehf_init_device(data, sio_data->kind);
2370
2371 data->vrm = vid_which_vrm();
2372 superio_enter(sio_data->sioreg);
2373 /* Read VID value */
2374 if (sio_data->kind == w83667hg || sio_data->kind == w83667hg_b ||
2375 sio_data->kind == nct6775 || sio_data->kind == nct6776) {
2376 /*
2377 * W83667HG has different pins for VID input and output, so
2378 * we can get the VID input values directly at logical device D
2379 * 0xe3.
2380 */
2381 superio_select(sio_data->sioreg, W83667HG_LD_VID);
2382 data->vid = superio_inb(sio_data->sioreg, 0xe3);
2383 err = device_create_file(dev, &dev_attr_cpu0_vid);
2384 if (err)
2385 goto exit_release;
2386 } else if (sio_data->kind != w83627uhg) {
2387 superio_select(sio_data->sioreg, W83627EHF_LD_HWM);
2388 if (superio_inb(sio_data->sioreg, SIO_REG_VID_CTRL) & 0x80) {
2389 /*
2390 * Set VID input sensibility if needed. In theory the
2391 * BIOS should have set it, but in practice it's not
2392 * always the case. We only do it for the W83627EHF/EHG
2393 * because the W83627DHG is more complex in this
2394 * respect.
2395 */
2396 if (sio_data->kind == w83627ehf) {
2397 en_vrm10 = superio_inb(sio_data->sioreg,
2398 SIO_REG_EN_VRM10);
2399 if ((en_vrm10 & 0x08) && data->vrm == 90) {
2400 dev_warn(dev, "Setting VID input "
2401 "voltage to TTL\n");
2402 superio_outb(sio_data->sioreg,
2403 SIO_REG_EN_VRM10,
2404 en_vrm10 & ~0x08);
2405 } else if (!(en_vrm10 & 0x08)
2406 && data->vrm == 100) {
2407 dev_warn(dev, "Setting VID input "
2408 "voltage to VRM10\n");
2409 superio_outb(sio_data->sioreg,
2410 SIO_REG_EN_VRM10,
2411 en_vrm10 | 0x08);
2412 }
2413 }
2414
2415 data->vid = superio_inb(sio_data->sioreg,
2416 SIO_REG_VID_DATA);
2417 if (sio_data->kind == w83627ehf) /* 6 VID pins only */
2418 data->vid &= 0x3f;
2419
2420 err = device_create_file(dev, &dev_attr_cpu0_vid);
2421 if (err)
2422 goto exit_release;
2423 } else {
2424 dev_info(dev, "VID pins in output mode, CPU VID not "
2425 "available\n");
2426 }
2427 }
2428
2429 if (fan_debounce &&
2430 (sio_data->kind == nct6775 || sio_data->kind == nct6776)) {
2431 u8 tmp;
2432
2433 superio_select(sio_data->sioreg, W83627EHF_LD_HWM);
2434 tmp = superio_inb(sio_data->sioreg, NCT6775_REG_FAN_DEBOUNCE);
2435 if (sio_data->kind == nct6776)
2436 superio_outb(sio_data->sioreg, NCT6775_REG_FAN_DEBOUNCE,
2437 0x3e | tmp);
2438 else
2439 superio_outb(sio_data->sioreg, NCT6775_REG_FAN_DEBOUNCE,
2440 0x1e | tmp);
2441 pr_info("Enabled fan debounce for chip %s\n", data->name);
2442 }
2443
2444 superio_exit(sio_data->sioreg);
2445
2446 w83627ehf_check_fan_inputs(sio_data, data);
2447
2448 /* Read fan clock dividers immediately */
2449 w83627ehf_update_fan_div_common(dev, data);
2450
2451 /* Read pwm data to save original values */
2452 w83627ehf_update_pwm_common(dev, data);
2453 for (i = 0; i < data->pwm_num; i++)
2454 data->pwm_enable_orig[i] = data->pwm_enable[i];
2455
2456 /* Register sysfs hooks */
2457 for (i = 0; i < ARRAY_SIZE(sda_sf3_arrays); i++) {
2458 err = device_create_file(dev, &sda_sf3_arrays[i].dev_attr);
2459 if (err)
2460 goto exit_remove;
2461 }
2462
2463 for (i = 0; i < ARRAY_SIZE(sda_sf3_max_step_arrays); i++) {
2464 struct sensor_device_attribute *attr =
2465 &sda_sf3_max_step_arrays[i];
2466 if (data->REG_FAN_STEP_OUTPUT &&
2467 data->REG_FAN_STEP_OUTPUT[attr->index] != 0xff) {
2468 err = device_create_file(dev, &attr->dev_attr);
2469 if (err)
2470 goto exit_remove;
2471 }
2472 }
2473 /* if fan3 and fan4 are enabled create the sf3 files for them */
2474 if ((data->has_fan & (1 << 2)) && data->pwm_num >= 3)
2475 for (i = 0; i < ARRAY_SIZE(sda_sf3_arrays_fan3); i++) {
2476 err = device_create_file(dev,
2477 &sda_sf3_arrays_fan3[i].dev_attr);
2478 if (err)
2479 goto exit_remove;
2480 }
2481 if ((data->has_fan & (1 << 3)) && data->pwm_num >= 4)
2482 for (i = 0; i < ARRAY_SIZE(sda_sf3_arrays_fan4); i++) {
2483 err = device_create_file(dev,
2484 &sda_sf3_arrays_fan4[i].dev_attr);
2485 if (err)
2486 goto exit_remove;
2487 }
2488
2489 for (i = 0; i < data->in_num; i++) {
2490 if ((i == 6) && data->in6_skip)
2491 continue;
2492 if ((err = device_create_file(dev, &sda_in_input[i].dev_attr))
2493 || (err = device_create_file(dev,
2494 &sda_in_alarm[i].dev_attr))
2495 || (err = device_create_file(dev,
2496 &sda_in_min[i].dev_attr))
2497 || (err = device_create_file(dev,
2498 &sda_in_max[i].dev_attr)))
2499 goto exit_remove;
2500 }
2501
2502 for (i = 0; i < 5; i++) {
2503 if (data->has_fan & (1 << i)) {
2504 if ((err = device_create_file(dev,
2505 &sda_fan_input[i].dev_attr))
2506 || (err = device_create_file(dev,
2507 &sda_fan_alarm[i].dev_attr)))
2508 goto exit_remove;
2509 if (sio_data->kind != nct6776) {
2510 err = device_create_file(dev,
2511 &sda_fan_div[i].dev_attr);
2512 if (err)
2513 goto exit_remove;
2514 }
2515 if (data->has_fan_min & (1 << i)) {
2516 err = device_create_file(dev,
2517 &sda_fan_min[i].dev_attr);
2518 if (err)
2519 goto exit_remove;
2520 }
2521 if (i < data->pwm_num &&
2522 ((err = device_create_file(dev,
2523 &sda_pwm[i].dev_attr))
2524 || (err = device_create_file(dev,
2525 &sda_pwm_mode[i].dev_attr))
2526 || (err = device_create_file(dev,
2527 &sda_pwm_enable[i].dev_attr))
2528 || (err = device_create_file(dev,
2529 &sda_target_temp[i].dev_attr))
2530 || (err = device_create_file(dev,
2531 &sda_tolerance[i].dev_attr))))
2532 goto exit_remove;
2533 }
2534 }
2535
2536 for (i = 0; i < NUM_REG_TEMP; i++) {
2537 if (!(data->have_temp & (1 << i)))
2538 continue;
2539 err = device_create_file(dev, &sda_temp_input[i].dev_attr);
2540 if (err)
2541 goto exit_remove;
2542 if (data->temp_label) {
2543 err = device_create_file(dev,
2544 &sda_temp_label[i].dev_attr);
2545 if (err)
2546 goto exit_remove;
2547 }
2548 if (i == 2 && data->temp3_val_only)
2549 continue;
2550 if (data->reg_temp_over[i]) {
2551 err = device_create_file(dev,
2552 &sda_temp_max[i].dev_attr);
2553 if (err)
2554 goto exit_remove;
2555 }
2556 if (data->reg_temp_hyst[i]) {
2557 err = device_create_file(dev,
2558 &sda_temp_max_hyst[i].dev_attr);
2559 if (err)
2560 goto exit_remove;
2561 }
2562 if (i > 2)
2563 continue;
2564 if ((err = device_create_file(dev,
2565 &sda_temp_alarm[i].dev_attr))
2566 || (err = device_create_file(dev,
2567 &sda_temp_type[i].dev_attr)))
2568 goto exit_remove;
2569 if (data->have_temp_offset & (1 << i)) {
2570 err = device_create_file(dev,
2571 &sda_temp_offset[i].dev_attr);
2572 if (err)
2573 goto exit_remove;
2574 }
2575 }
2576
2577 err = device_create_file(dev, &sda_caseopen[0].dev_attr);
2578 if (err)
2579 goto exit_remove;
2580
2581 if (sio_data->kind == nct6776) {
2582 err = device_create_file(dev, &sda_caseopen[1].dev_attr);
2583 if (err)
2584 goto exit_remove;
2585 }
2586
2587 err = device_create_file(dev, &dev_attr_name);
2588 if (err)
2589 goto exit_remove;
2590
2591 data->hwmon_dev = hwmon_device_register(dev);
2592 if (IS_ERR(data->hwmon_dev)) {
2593 err = PTR_ERR(data->hwmon_dev);
2594 goto exit_remove;
2595 }
2596
2597 return 0;
2598
2599 exit_remove:
2600 w83627ehf_device_remove_files(dev);
2601 exit_release:
2602 platform_set_drvdata(pdev, NULL);
2603 release_region(res->start, IOREGION_LENGTH);
2604 exit:
2605 return err;
2606 }
2607
2608 static int w83627ehf_remove(struct platform_device *pdev)
2609 {
2610 struct w83627ehf_data *data = platform_get_drvdata(pdev);
2611
2612 hwmon_device_unregister(data->hwmon_dev);
2613 w83627ehf_device_remove_files(&pdev->dev);
2614 release_region(data->addr, IOREGION_LENGTH);
2615 platform_set_drvdata(pdev, NULL);
2616
2617 return 0;
2618 }
2619
2620 #ifdef CONFIG_PM
2621 static int w83627ehf_suspend(struct device *dev)
2622 {
2623 struct w83627ehf_data *data = w83627ehf_update_device(dev);
2624 struct w83627ehf_sio_data *sio_data = dev->platform_data;
2625
2626 mutex_lock(&data->update_lock);
2627 data->vbat = w83627ehf_read_value(data, W83627EHF_REG_VBAT);
2628 if (sio_data->kind == nct6775) {
2629 data->fandiv1 = w83627ehf_read_value(data, NCT6775_REG_FANDIV1);
2630 data->fandiv2 = w83627ehf_read_value(data, NCT6775_REG_FANDIV2);
2631 }
2632 mutex_unlock(&data->update_lock);
2633
2634 return 0;
2635 }
2636
2637 static int w83627ehf_resume(struct device *dev)
2638 {
2639 struct w83627ehf_data *data = dev_get_drvdata(dev);
2640 struct w83627ehf_sio_data *sio_data = dev->platform_data;
2641 int i;
2642
2643 mutex_lock(&data->update_lock);
2644 data->bank = 0xff; /* Force initial bank selection */
2645
2646 /* Restore limits */
2647 for (i = 0; i < data->in_num; i++) {
2648 if ((i == 6) && data->in6_skip)
2649 continue;
2650
2651 w83627ehf_write_value(data, W83627EHF_REG_IN_MIN(i),
2652 data->in_min[i]);
2653 w83627ehf_write_value(data, W83627EHF_REG_IN_MAX(i),
2654 data->in_max[i]);
2655 }
2656
2657 for (i = 0; i < 5; i++) {
2658 if (!(data->has_fan_min & (1 << i)))
2659 continue;
2660
2661 w83627ehf_write_value(data, data->REG_FAN_MIN[i],
2662 data->fan_min[i]);
2663 }
2664
2665 for (i = 0; i < NUM_REG_TEMP; i++) {
2666 if (!(data->have_temp & (1 << i)))
2667 continue;
2668
2669 if (data->reg_temp_over[i])
2670 w83627ehf_write_temp(data, data->reg_temp_over[i],
2671 data->temp_max[i]);
2672 if (data->reg_temp_hyst[i])
2673 w83627ehf_write_temp(data, data->reg_temp_hyst[i],
2674 data->temp_max_hyst[i]);
2675 if (i > 2)
2676 continue;
2677 if (data->have_temp_offset & (1 << i))
2678 w83627ehf_write_value(data,
2679 W83627EHF_REG_TEMP_OFFSET[i],
2680 data->temp_offset[i]);
2681 }
2682
2683 /* Restore other settings */
2684 w83627ehf_write_value(data, W83627EHF_REG_VBAT, data->vbat);
2685 if (sio_data->kind == nct6775) {
2686 w83627ehf_write_value(data, NCT6775_REG_FANDIV1, data->fandiv1);
2687 w83627ehf_write_value(data, NCT6775_REG_FANDIV2, data->fandiv2);
2688 }
2689
2690 /* Force re-reading all values */
2691 data->valid = 0;
2692 mutex_unlock(&data->update_lock);
2693
2694 return 0;
2695 }
2696
2697 static const struct dev_pm_ops w83627ehf_dev_pm_ops = {
2698 .suspend = w83627ehf_suspend,
2699 .resume = w83627ehf_resume,
2700 };
2701
2702 #define W83627EHF_DEV_PM_OPS (&w83627ehf_dev_pm_ops)
2703 #else
2704 #define W83627EHF_DEV_PM_OPS NULL
2705 #endif /* CONFIG_PM */
2706
2707 static struct platform_driver w83627ehf_driver = {
2708 .driver = {
2709 .owner = THIS_MODULE,
2710 .name = DRVNAME,
2711 .pm = W83627EHF_DEV_PM_OPS,
2712 },
2713 .probe = w83627ehf_probe,
2714 .remove = w83627ehf_remove,
2715 };
2716
2717 /* w83627ehf_find() looks for a '627 in the Super-I/O config space */
2718 static int __init w83627ehf_find(int sioaddr, unsigned short *addr,
2719 struct w83627ehf_sio_data *sio_data)
2720 {
2721 static const char sio_name_W83627EHF[] __initconst = "W83627EHF";
2722 static const char sio_name_W83627EHG[] __initconst = "W83627EHG";
2723 static const char sio_name_W83627DHG[] __initconst = "W83627DHG";
2724 static const char sio_name_W83627DHG_P[] __initconst = "W83627DHG-P";
2725 static const char sio_name_W83627UHG[] __initconst = "W83627UHG";
2726 static const char sio_name_W83667HG[] __initconst = "W83667HG";
2727 static const char sio_name_W83667HG_B[] __initconst = "W83667HG-B";
2728 static const char sio_name_NCT6775[] __initconst = "NCT6775F";
2729 static const char sio_name_NCT6776[] __initconst = "NCT6776F";
2730
2731 u16 val;
2732 const char *sio_name;
2733
2734 superio_enter(sioaddr);
2735
2736 if (force_id)
2737 val = force_id;
2738 else
2739 val = (superio_inb(sioaddr, SIO_REG_DEVID) << 8)
2740 | superio_inb(sioaddr, SIO_REG_DEVID + 1);
2741 switch (val & SIO_ID_MASK) {
2742 case SIO_W83627EHF_ID:
2743 sio_data->kind = w83627ehf;
2744 sio_name = sio_name_W83627EHF;
2745 break;
2746 case SIO_W83627EHG_ID:
2747 sio_data->kind = w83627ehf;
2748 sio_name = sio_name_W83627EHG;
2749 break;
2750 case SIO_W83627DHG_ID:
2751 sio_data->kind = w83627dhg;
2752 sio_name = sio_name_W83627DHG;
2753 break;
2754 case SIO_W83627DHG_P_ID:
2755 sio_data->kind = w83627dhg_p;
2756 sio_name = sio_name_W83627DHG_P;
2757 break;
2758 case SIO_W83627UHG_ID:
2759 sio_data->kind = w83627uhg;
2760 sio_name = sio_name_W83627UHG;
2761 break;
2762 case SIO_W83667HG_ID:
2763 sio_data->kind = w83667hg;
2764 sio_name = sio_name_W83667HG;
2765 break;
2766 case SIO_W83667HG_B_ID:
2767 sio_data->kind = w83667hg_b;
2768 sio_name = sio_name_W83667HG_B;
2769 break;
2770 case SIO_NCT6775_ID:
2771 sio_data->kind = nct6775;
2772 sio_name = sio_name_NCT6775;
2773 break;
2774 case SIO_NCT6776_ID:
2775 sio_data->kind = nct6776;
2776 sio_name = sio_name_NCT6776;
2777 break;
2778 default:
2779 if (val != 0xffff)
2780 pr_debug("unsupported chip ID: 0x%04x\n", val);
2781 superio_exit(sioaddr);
2782 return -ENODEV;
2783 }
2784
2785 /* We have a known chip, find the HWM I/O address */
2786 superio_select(sioaddr, W83627EHF_LD_HWM);
2787 val = (superio_inb(sioaddr, SIO_REG_ADDR) << 8)
2788 | superio_inb(sioaddr, SIO_REG_ADDR + 1);
2789 *addr = val & IOREGION_ALIGNMENT;
2790 if (*addr == 0) {
2791 pr_err("Refusing to enable a Super-I/O device with a base I/O port 0\n");
2792 superio_exit(sioaddr);
2793 return -ENODEV;
2794 }
2795
2796 /* Activate logical device if needed */
2797 val = superio_inb(sioaddr, SIO_REG_ENABLE);
2798 if (!(val & 0x01)) {
2799 pr_warn("Forcibly enabling Super-I/O. "
2800 "Sensor is probably unusable.\n");
2801 superio_outb(sioaddr, SIO_REG_ENABLE, val | 0x01);
2802 }
2803
2804 superio_exit(sioaddr);
2805 pr_info("Found %s chip at %#x\n", sio_name, *addr);
2806 sio_data->sioreg = sioaddr;
2807
2808 return 0;
2809 }
2810
2811 /*
2812 * when Super-I/O functions move to a separate file, the Super-I/O
2813 * bus will manage the lifetime of the device and this module will only keep
2814 * track of the w83627ehf driver. But since we platform_device_alloc(), we
2815 * must keep track of the device
2816 */
2817 static struct platform_device *pdev;
2818
2819 static int __init sensors_w83627ehf_init(void)
2820 {
2821 int err;
2822 unsigned short address;
2823 struct resource res;
2824 struct w83627ehf_sio_data sio_data;
2825
2826 /*
2827 * initialize sio_data->kind and sio_data->sioreg.
2828 *
2829 * when Super-I/O functions move to a separate file, the Super-I/O
2830 * driver will probe 0x2e and 0x4e and auto-detect the presence of a
2831 * w83627ehf hardware monitor, and call probe()
2832 */
2833 if (w83627ehf_find(0x2e, &address, &sio_data) &&
2834 w83627ehf_find(0x4e, &address, &sio_data))
2835 return -ENODEV;
2836
2837 err = platform_driver_register(&w83627ehf_driver);
2838 if (err)
2839 goto exit;
2840
2841 pdev = platform_device_alloc(DRVNAME, address);
2842 if (!pdev) {
2843 err = -ENOMEM;
2844 pr_err("Device allocation failed\n");
2845 goto exit_unregister;
2846 }
2847
2848 err = platform_device_add_data(pdev, &sio_data,
2849 sizeof(struct w83627ehf_sio_data));
2850 if (err) {
2851 pr_err("Platform data allocation failed\n");
2852 goto exit_device_put;
2853 }
2854
2855 memset(&res, 0, sizeof(res));
2856 res.name = DRVNAME;
2857 res.start = address + IOREGION_OFFSET;
2858 res.end = address + IOREGION_OFFSET + IOREGION_LENGTH - 1;
2859 res.flags = IORESOURCE_IO;
2860
2861 err = acpi_check_resource_conflict(&res);
2862 if (err)
2863 goto exit_device_put;
2864
2865 err = platform_device_add_resources(pdev, &res, 1);
2866 if (err) {
2867 pr_err("Device resource addition failed (%d)\n", err);
2868 goto exit_device_put;
2869 }
2870
2871 /* platform_device_add calls probe() */
2872 err = platform_device_add(pdev);
2873 if (err) {
2874 pr_err("Device addition failed (%d)\n", err);
2875 goto exit_device_put;
2876 }
2877
2878 return 0;
2879
2880 exit_device_put:
2881 platform_device_put(pdev);
2882 exit_unregister:
2883 platform_driver_unregister(&w83627ehf_driver);
2884 exit:
2885 return err;
2886 }
2887
2888 static void __exit sensors_w83627ehf_exit(void)
2889 {
2890 platform_device_unregister(pdev);
2891 platform_driver_unregister(&w83627ehf_driver);
2892 }
2893
2894 MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>");
2895 MODULE_DESCRIPTION("W83627EHF driver");
2896 MODULE_LICENSE("GPL");
2897
2898 module_init(sensors_w83627ehf_init);
2899 module_exit(sensors_w83627ehf_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree