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Merge tag 'acpi-4.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...
[deliverable/linux.git] / drivers / hwmon / w83627ehf.c
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 <jdelvare@suse.de>
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 clamp_val((mode ? (msec + 50) / 100 : (msec + 200) / 400),
358 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 clamp_val(DIV_ROUND_CLOSEST(val * 100, scale_in[nr]), 0, 255);
418 }
419
420 /*
421 * Data structures and manipulation thereof
422 */
423
424 struct w83627ehf_data {
425 int addr; /* IO base of hw monitor block */
426 const char *name;
427
428 struct device *hwmon_dev;
429 struct mutex lock;
430
431 u16 reg_temp[NUM_REG_TEMP];
432 u16 reg_temp_over[NUM_REG_TEMP];
433 u16 reg_temp_hyst[NUM_REG_TEMP];
434 u16 reg_temp_config[NUM_REG_TEMP];
435 u8 temp_src[NUM_REG_TEMP];
436 const char * const *temp_label;
437
438 const u16 *REG_PWM;
439 const u16 *REG_TARGET;
440 const u16 *REG_FAN;
441 const u16 *REG_FAN_MIN;
442 const u16 *REG_FAN_START_OUTPUT;
443 const u16 *REG_FAN_STOP_OUTPUT;
444 const u16 *REG_FAN_STOP_TIME;
445 const u16 *REG_FAN_MAX_OUTPUT;
446 const u16 *REG_FAN_STEP_OUTPUT;
447 const u16 *scale_in;
448
449 unsigned int (*fan_from_reg)(u16 reg, unsigned int divreg);
450 unsigned int (*fan_from_reg_min)(u16 reg, unsigned int divreg);
451
452 struct mutex update_lock;
453 char valid; /* !=0 if following fields are valid */
454 unsigned long last_updated; /* In jiffies */
455
456 /* Register values */
457 u8 bank; /* current register bank */
458 u8 in_num; /* number of in inputs we have */
459 u8 in[10]; /* Register value */
460 u8 in_max[10]; /* Register value */
461 u8 in_min[10]; /* Register value */
462 unsigned int rpm[5];
463 u16 fan_min[5];
464 u8 fan_div[5];
465 u8 has_fan; /* some fan inputs can be disabled */
466 u8 has_fan_min; /* some fans don't have min register */
467 bool has_fan_div;
468 u8 temp_type[3];
469 s8 temp_offset[3];
470 s16 temp[9];
471 s16 temp_max[9];
472 s16 temp_max_hyst[9];
473 u32 alarms;
474 u8 caseopen;
475
476 u8 pwm_mode[4]; /* 0->DC variable voltage, 1->PWM variable duty cycle */
477 u8 pwm_enable[4]; /* 1->manual
478 * 2->thermal cruise mode (also called SmartFan I)
479 * 3->fan speed cruise mode
480 * 4->variable thermal cruise (also called
481 * SmartFan III)
482 * 5->enhanced variable thermal cruise (also called
483 * SmartFan IV)
484 */
485 u8 pwm_enable_orig[4]; /* original value of pwm_enable */
486 u8 pwm_num; /* number of pwm */
487 u8 pwm[4];
488 u8 target_temp[4];
489 u8 tolerance[4];
490
491 u8 fan_start_output[4]; /* minimum fan speed when spinning up */
492 u8 fan_stop_output[4]; /* minimum fan speed when spinning down */
493 u8 fan_stop_time[4]; /* time at minimum before disabling fan */
494 u8 fan_max_output[4]; /* maximum fan speed */
495 u8 fan_step_output[4]; /* rate of change output value */
496
497 u8 vid;
498 u8 vrm;
499
500 u16 have_temp;
501 u16 have_temp_offset;
502 u8 in6_skip:1;
503 u8 temp3_val_only:1;
504
505 #ifdef CONFIG_PM
506 /* Remember extra register values over suspend/resume */
507 u8 vbat;
508 u8 fandiv1;
509 u8 fandiv2;
510 #endif
511 };
512
513 struct w83627ehf_sio_data {
514 int sioreg;
515 enum kinds kind;
516 };
517
518 /*
519 * On older chips, only registers 0x50-0x5f are banked.
520 * On more recent chips, all registers are banked.
521 * Assume that is the case and set the bank number for each access.
522 * Cache the bank number so it only needs to be set if it changes.
523 */
524 static inline void w83627ehf_set_bank(struct w83627ehf_data *data, u16 reg)
525 {
526 u8 bank = reg >> 8;
527 if (data->bank != bank) {
528 outb_p(W83627EHF_REG_BANK, data->addr + ADDR_REG_OFFSET);
529 outb_p(bank, data->addr + DATA_REG_OFFSET);
530 data->bank = bank;
531 }
532 }
533
534 static u16 w83627ehf_read_value(struct w83627ehf_data *data, u16 reg)
535 {
536 int res, word_sized = is_word_sized(reg);
537
538 mutex_lock(&data->lock);
539
540 w83627ehf_set_bank(data, reg);
541 outb_p(reg & 0xff, data->addr + ADDR_REG_OFFSET);
542 res = inb_p(data->addr + DATA_REG_OFFSET);
543 if (word_sized) {
544 outb_p((reg & 0xff) + 1,
545 data->addr + ADDR_REG_OFFSET);
546 res = (res << 8) + inb_p(data->addr + DATA_REG_OFFSET);
547 }
548
549 mutex_unlock(&data->lock);
550 return res;
551 }
552
553 static int w83627ehf_write_value(struct w83627ehf_data *data, u16 reg,
554 u16 value)
555 {
556 int word_sized = is_word_sized(reg);
557
558 mutex_lock(&data->lock);
559
560 w83627ehf_set_bank(data, reg);
561 outb_p(reg & 0xff, data->addr + ADDR_REG_OFFSET);
562 if (word_sized) {
563 outb_p(value >> 8, data->addr + DATA_REG_OFFSET);
564 outb_p((reg & 0xff) + 1,
565 data->addr + ADDR_REG_OFFSET);
566 }
567 outb_p(value & 0xff, data->addr + DATA_REG_OFFSET);
568
569 mutex_unlock(&data->lock);
570 return 0;
571 }
572
573 /* We left-align 8-bit temperature values to make the code simpler */
574 static u16 w83627ehf_read_temp(struct w83627ehf_data *data, u16 reg)
575 {
576 u16 res;
577
578 res = w83627ehf_read_value(data, reg);
579 if (!is_word_sized(reg))
580 res <<= 8;
581
582 return res;
583 }
584
585 static int w83627ehf_write_temp(struct w83627ehf_data *data, u16 reg,
586 u16 value)
587 {
588 if (!is_word_sized(reg))
589 value >>= 8;
590 return w83627ehf_write_value(data, reg, value);
591 }
592
593 /* This function assumes that the caller holds data->update_lock */
594 static void nct6775_write_fan_div(struct w83627ehf_data *data, int nr)
595 {
596 u8 reg;
597
598 switch (nr) {
599 case 0:
600 reg = (w83627ehf_read_value(data, NCT6775_REG_FANDIV1) & 0x70)
601 | (data->fan_div[0] & 0x7);
602 w83627ehf_write_value(data, NCT6775_REG_FANDIV1, reg);
603 break;
604 case 1:
605 reg = (w83627ehf_read_value(data, NCT6775_REG_FANDIV1) & 0x7)
606 | ((data->fan_div[1] << 4) & 0x70);
607 w83627ehf_write_value(data, NCT6775_REG_FANDIV1, reg);
608 break;
609 case 2:
610 reg = (w83627ehf_read_value(data, NCT6775_REG_FANDIV2) & 0x70)
611 | (data->fan_div[2] & 0x7);
612 w83627ehf_write_value(data, NCT6775_REG_FANDIV2, reg);
613 break;
614 case 3:
615 reg = (w83627ehf_read_value(data, NCT6775_REG_FANDIV2) & 0x7)
616 | ((data->fan_div[3] << 4) & 0x70);
617 w83627ehf_write_value(data, NCT6775_REG_FANDIV2, reg);
618 break;
619 }
620 }
621
622 /* This function assumes that the caller holds data->update_lock */
623 static void w83627ehf_write_fan_div(struct w83627ehf_data *data, int nr)
624 {
625 u8 reg;
626
627 switch (nr) {
628 case 0:
629 reg = (w83627ehf_read_value(data, W83627EHF_REG_FANDIV1) & 0xcf)
630 | ((data->fan_div[0] & 0x03) << 4);
631 /* fan5 input control bit is write only, compute the value */
632 reg |= (data->has_fan & (1 << 4)) ? 1 : 0;
633 w83627ehf_write_value(data, W83627EHF_REG_FANDIV1, reg);
634 reg = (w83627ehf_read_value(data, W83627EHF_REG_VBAT) & 0xdf)
635 | ((data->fan_div[0] & 0x04) << 3);
636 w83627ehf_write_value(data, W83627EHF_REG_VBAT, reg);
637 break;
638 case 1:
639 reg = (w83627ehf_read_value(data, W83627EHF_REG_FANDIV1) & 0x3f)
640 | ((data->fan_div[1] & 0x03) << 6);
641 /* fan5 input control bit is write only, compute the value */
642 reg |= (data->has_fan & (1 << 4)) ? 1 : 0;
643 w83627ehf_write_value(data, W83627EHF_REG_FANDIV1, reg);
644 reg = (w83627ehf_read_value(data, W83627EHF_REG_VBAT) & 0xbf)
645 | ((data->fan_div[1] & 0x04) << 4);
646 w83627ehf_write_value(data, W83627EHF_REG_VBAT, reg);
647 break;
648 case 2:
649 reg = (w83627ehf_read_value(data, W83627EHF_REG_FANDIV2) & 0x3f)
650 | ((data->fan_div[2] & 0x03) << 6);
651 w83627ehf_write_value(data, W83627EHF_REG_FANDIV2, reg);
652 reg = (w83627ehf_read_value(data, W83627EHF_REG_VBAT) & 0x7f)
653 | ((data->fan_div[2] & 0x04) << 5);
654 w83627ehf_write_value(data, W83627EHF_REG_VBAT, reg);
655 break;
656 case 3:
657 reg = (w83627ehf_read_value(data, W83627EHF_REG_DIODE) & 0xfc)
658 | (data->fan_div[3] & 0x03);
659 w83627ehf_write_value(data, W83627EHF_REG_DIODE, reg);
660 reg = (w83627ehf_read_value(data, W83627EHF_REG_SMI_OVT) & 0x7f)
661 | ((data->fan_div[3] & 0x04) << 5);
662 w83627ehf_write_value(data, W83627EHF_REG_SMI_OVT, reg);
663 break;
664 case 4:
665 reg = (w83627ehf_read_value(data, W83627EHF_REG_DIODE) & 0x73)
666 | ((data->fan_div[4] & 0x03) << 2)
667 | ((data->fan_div[4] & 0x04) << 5);
668 w83627ehf_write_value(data, W83627EHF_REG_DIODE, reg);
669 break;
670 }
671 }
672
673 static void w83627ehf_write_fan_div_common(struct device *dev,
674 struct w83627ehf_data *data, int nr)
675 {
676 struct w83627ehf_sio_data *sio_data = dev_get_platdata(dev);
677
678 if (sio_data->kind == nct6776)
679 ; /* no dividers, do nothing */
680 else if (sio_data->kind == nct6775)
681 nct6775_write_fan_div(data, nr);
682 else
683 w83627ehf_write_fan_div(data, nr);
684 }
685
686 static void nct6775_update_fan_div(struct w83627ehf_data *data)
687 {
688 u8 i;
689
690 i = w83627ehf_read_value(data, NCT6775_REG_FANDIV1);
691 data->fan_div[0] = i & 0x7;
692 data->fan_div[1] = (i & 0x70) >> 4;
693 i = w83627ehf_read_value(data, NCT6775_REG_FANDIV2);
694 data->fan_div[2] = i & 0x7;
695 if (data->has_fan & (1<<3))
696 data->fan_div[3] = (i & 0x70) >> 4;
697 }
698
699 static void w83627ehf_update_fan_div(struct w83627ehf_data *data)
700 {
701 int i;
702
703 i = w83627ehf_read_value(data, W83627EHF_REG_FANDIV1);
704 data->fan_div[0] = (i >> 4) & 0x03;
705 data->fan_div[1] = (i >> 6) & 0x03;
706 i = w83627ehf_read_value(data, W83627EHF_REG_FANDIV2);
707 data->fan_div[2] = (i >> 6) & 0x03;
708 i = w83627ehf_read_value(data, W83627EHF_REG_VBAT);
709 data->fan_div[0] |= (i >> 3) & 0x04;
710 data->fan_div[1] |= (i >> 4) & 0x04;
711 data->fan_div[2] |= (i >> 5) & 0x04;
712 if (data->has_fan & ((1 << 3) | (1 << 4))) {
713 i = w83627ehf_read_value(data, W83627EHF_REG_DIODE);
714 data->fan_div[3] = i & 0x03;
715 data->fan_div[4] = ((i >> 2) & 0x03)
716 | ((i >> 5) & 0x04);
717 }
718 if (data->has_fan & (1 << 3)) {
719 i = w83627ehf_read_value(data, W83627EHF_REG_SMI_OVT);
720 data->fan_div[3] |= (i >> 5) & 0x04;
721 }
722 }
723
724 static void w83627ehf_update_fan_div_common(struct device *dev,
725 struct w83627ehf_data *data)
726 {
727 struct w83627ehf_sio_data *sio_data = dev_get_platdata(dev);
728
729 if (sio_data->kind == nct6776)
730 ; /* no dividers, do nothing */
731 else if (sio_data->kind == nct6775)
732 nct6775_update_fan_div(data);
733 else
734 w83627ehf_update_fan_div(data);
735 }
736
737 static void nct6775_update_pwm(struct w83627ehf_data *data)
738 {
739 int i;
740 int pwmcfg, fanmodecfg;
741
742 for (i = 0; i < data->pwm_num; i++) {
743 pwmcfg = w83627ehf_read_value(data,
744 W83627EHF_REG_PWM_ENABLE[i]);
745 fanmodecfg = w83627ehf_read_value(data,
746 NCT6775_REG_FAN_MODE[i]);
747 data->pwm_mode[i] =
748 ((pwmcfg >> W83627EHF_PWM_MODE_SHIFT[i]) & 1) ? 0 : 1;
749 data->pwm_enable[i] = ((fanmodecfg >> 4) & 7) + 1;
750 data->tolerance[i] = fanmodecfg & 0x0f;
751 data->pwm[i] = w83627ehf_read_value(data, data->REG_PWM[i]);
752 }
753 }
754
755 static void w83627ehf_update_pwm(struct w83627ehf_data *data)
756 {
757 int i;
758 int pwmcfg = 0, tolerance = 0; /* shut up the compiler */
759
760 for (i = 0; i < data->pwm_num; i++) {
761 if (!(data->has_fan & (1 << i)))
762 continue;
763
764 /* pwmcfg, tolerance mapped for i=0, i=1 to same reg */
765 if (i != 1) {
766 pwmcfg = w83627ehf_read_value(data,
767 W83627EHF_REG_PWM_ENABLE[i]);
768 tolerance = w83627ehf_read_value(data,
769 W83627EHF_REG_TOLERANCE[i]);
770 }
771 data->pwm_mode[i] =
772 ((pwmcfg >> W83627EHF_PWM_MODE_SHIFT[i]) & 1) ? 0 : 1;
773 data->pwm_enable[i] = ((pwmcfg >> W83627EHF_PWM_ENABLE_SHIFT[i])
774 & 3) + 1;
775 data->pwm[i] = w83627ehf_read_value(data, data->REG_PWM[i]);
776
777 data->tolerance[i] = (tolerance >> (i == 1 ? 4 : 0)) & 0x0f;
778 }
779 }
780
781 static void w83627ehf_update_pwm_common(struct device *dev,
782 struct w83627ehf_data *data)
783 {
784 struct w83627ehf_sio_data *sio_data = dev_get_platdata(dev);
785
786 if (sio_data->kind == nct6775 || sio_data->kind == nct6776)
787 nct6775_update_pwm(data);
788 else
789 w83627ehf_update_pwm(data);
790 }
791
792 static struct w83627ehf_data *w83627ehf_update_device(struct device *dev)
793 {
794 struct w83627ehf_data *data = dev_get_drvdata(dev);
795 struct w83627ehf_sio_data *sio_data = dev_get_platdata(dev);
796
797 int i;
798
799 mutex_lock(&data->update_lock);
800
801 if (time_after(jiffies, data->last_updated + HZ + HZ/2)
802 || !data->valid) {
803 /* Fan clock dividers */
804 w83627ehf_update_fan_div_common(dev, data);
805
806 /* Measured voltages and limits */
807 for (i = 0; i < data->in_num; i++) {
808 if ((i == 6) && data->in6_skip)
809 continue;
810
811 data->in[i] = w83627ehf_read_value(data,
812 W83627EHF_REG_IN(i));
813 data->in_min[i] = w83627ehf_read_value(data,
814 W83627EHF_REG_IN_MIN(i));
815 data->in_max[i] = w83627ehf_read_value(data,
816 W83627EHF_REG_IN_MAX(i));
817 }
818
819 /* Measured fan speeds and limits */
820 for (i = 0; i < 5; i++) {
821 u16 reg;
822
823 if (!(data->has_fan & (1 << i)))
824 continue;
825
826 reg = w83627ehf_read_value(data, data->REG_FAN[i]);
827 data->rpm[i] = data->fan_from_reg(reg,
828 data->fan_div[i]);
829
830 if (data->has_fan_min & (1 << i))
831 data->fan_min[i] = w83627ehf_read_value(data,
832 data->REG_FAN_MIN[i]);
833
834 /*
835 * If we failed to measure the fan speed and clock
836 * divider can be increased, let's try that for next
837 * time
838 */
839 if (data->has_fan_div
840 && (reg >= 0xff || (sio_data->kind == nct6775
841 && reg == 0x00))
842 && data->fan_div[i] < 0x07) {
843 dev_dbg(dev,
844 "Increasing fan%d clock divider from %u to %u\n",
845 i + 1, div_from_reg(data->fan_div[i]),
846 div_from_reg(data->fan_div[i] + 1));
847 data->fan_div[i]++;
848 w83627ehf_write_fan_div_common(dev, data, i);
849 /* Preserve min limit if possible */
850 if ((data->has_fan_min & (1 << i))
851 && data->fan_min[i] >= 2
852 && data->fan_min[i] != 255)
853 w83627ehf_write_value(data,
854 data->REG_FAN_MIN[i],
855 (data->fan_min[i] /= 2));
856 }
857 }
858
859 w83627ehf_update_pwm_common(dev, data);
860
861 for (i = 0; i < data->pwm_num; i++) {
862 if (!(data->has_fan & (1 << i)))
863 continue;
864
865 data->fan_start_output[i] =
866 w83627ehf_read_value(data,
867 data->REG_FAN_START_OUTPUT[i]);
868 data->fan_stop_output[i] =
869 w83627ehf_read_value(data,
870 data->REG_FAN_STOP_OUTPUT[i]);
871 data->fan_stop_time[i] =
872 w83627ehf_read_value(data,
873 data->REG_FAN_STOP_TIME[i]);
874
875 if (data->REG_FAN_MAX_OUTPUT &&
876 data->REG_FAN_MAX_OUTPUT[i] != 0xff)
877 data->fan_max_output[i] =
878 w83627ehf_read_value(data,
879 data->REG_FAN_MAX_OUTPUT[i]);
880
881 if (data->REG_FAN_STEP_OUTPUT &&
882 data->REG_FAN_STEP_OUTPUT[i] != 0xff)
883 data->fan_step_output[i] =
884 w83627ehf_read_value(data,
885 data->REG_FAN_STEP_OUTPUT[i]);
886
887 data->target_temp[i] =
888 w83627ehf_read_value(data,
889 data->REG_TARGET[i]) &
890 (data->pwm_mode[i] == 1 ? 0x7f : 0xff);
891 }
892
893 /* Measured temperatures and limits */
894 for (i = 0; i < NUM_REG_TEMP; i++) {
895 if (!(data->have_temp & (1 << i)))
896 continue;
897 data->temp[i] = w83627ehf_read_temp(data,
898 data->reg_temp[i]);
899 if (data->reg_temp_over[i])
900 data->temp_max[i]
901 = w83627ehf_read_temp(data,
902 data->reg_temp_over[i]);
903 if (data->reg_temp_hyst[i])
904 data->temp_max_hyst[i]
905 = w83627ehf_read_temp(data,
906 data->reg_temp_hyst[i]);
907 if (i > 2)
908 continue;
909 if (data->have_temp_offset & (1 << i))
910 data->temp_offset[i]
911 = w83627ehf_read_value(data,
912 W83627EHF_REG_TEMP_OFFSET[i]);
913 }
914
915 data->alarms = w83627ehf_read_value(data,
916 W83627EHF_REG_ALARM1) |
917 (w83627ehf_read_value(data,
918 W83627EHF_REG_ALARM2) << 8) |
919 (w83627ehf_read_value(data,
920 W83627EHF_REG_ALARM3) << 16);
921
922 data->caseopen = w83627ehf_read_value(data,
923 W83627EHF_REG_CASEOPEN_DET);
924
925 data->last_updated = jiffies;
926 data->valid = 1;
927 }
928
929 mutex_unlock(&data->update_lock);
930 return data;
931 }
932
933 /*
934 * Sysfs callback functions
935 */
936 #define show_in_reg(reg) \
937 static ssize_t \
938 show_##reg(struct device *dev, struct device_attribute *attr, \
939 char *buf) \
940 { \
941 struct w83627ehf_data *data = w83627ehf_update_device(dev); \
942 struct sensor_device_attribute *sensor_attr = \
943 to_sensor_dev_attr(attr); \
944 int nr = sensor_attr->index; \
945 return sprintf(buf, "%ld\n", in_from_reg(data->reg[nr], nr, \
946 data->scale_in)); \
947 }
948 show_in_reg(in)
949 show_in_reg(in_min)
950 show_in_reg(in_max)
951
952 #define store_in_reg(REG, reg) \
953 static ssize_t \
954 store_in_##reg(struct device *dev, struct device_attribute *attr, \
955 const char *buf, size_t count) \
956 { \
957 struct w83627ehf_data *data = dev_get_drvdata(dev); \
958 struct sensor_device_attribute *sensor_attr = \
959 to_sensor_dev_attr(attr); \
960 int nr = sensor_attr->index; \
961 unsigned long val; \
962 int err; \
963 err = kstrtoul(buf, 10, &val); \
964 if (err < 0) \
965 return err; \
966 mutex_lock(&data->update_lock); \
967 data->in_##reg[nr] = in_to_reg(val, nr, data->scale_in); \
968 w83627ehf_write_value(data, W83627EHF_REG_IN_##REG(nr), \
969 data->in_##reg[nr]); \
970 mutex_unlock(&data->update_lock); \
971 return count; \
972 }
973
974 store_in_reg(MIN, min)
975 store_in_reg(MAX, max)
976
977 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
978 char *buf)
979 {
980 struct w83627ehf_data *data = w83627ehf_update_device(dev);
981 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
982 int nr = sensor_attr->index;
983 return sprintf(buf, "%u\n", (data->alarms >> nr) & 0x01);
984 }
985
986 static struct sensor_device_attribute sda_in_input[] = {
987 SENSOR_ATTR(in0_input, S_IRUGO, show_in, NULL, 0),
988 SENSOR_ATTR(in1_input, S_IRUGO, show_in, NULL, 1),
989 SENSOR_ATTR(in2_input, S_IRUGO, show_in, NULL, 2),
990 SENSOR_ATTR(in3_input, S_IRUGO, show_in, NULL, 3),
991 SENSOR_ATTR(in4_input, S_IRUGO, show_in, NULL, 4),
992 SENSOR_ATTR(in5_input, S_IRUGO, show_in, NULL, 5),
993 SENSOR_ATTR(in6_input, S_IRUGO, show_in, NULL, 6),
994 SENSOR_ATTR(in7_input, S_IRUGO, show_in, NULL, 7),
995 SENSOR_ATTR(in8_input, S_IRUGO, show_in, NULL, 8),
996 SENSOR_ATTR(in9_input, S_IRUGO, show_in, NULL, 9),
997 };
998
999 static struct sensor_device_attribute sda_in_alarm[] = {
1000 SENSOR_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0),
1001 SENSOR_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1),
1002 SENSOR_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2),
1003 SENSOR_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3),
1004 SENSOR_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8),
1005 SENSOR_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 21),
1006 SENSOR_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 20),
1007 SENSOR_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 16),
1008 SENSOR_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 17),
1009 SENSOR_ATTR(in9_alarm, S_IRUGO, show_alarm, NULL, 19),
1010 };
1011
1012 static struct sensor_device_attribute sda_in_min[] = {
1013 SENSOR_ATTR(in0_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 0),
1014 SENSOR_ATTR(in1_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 1),
1015 SENSOR_ATTR(in2_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 2),
1016 SENSOR_ATTR(in3_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 3),
1017 SENSOR_ATTR(in4_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 4),
1018 SENSOR_ATTR(in5_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 5),
1019 SENSOR_ATTR(in6_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 6),
1020 SENSOR_ATTR(in7_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 7),
1021 SENSOR_ATTR(in8_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 8),
1022 SENSOR_ATTR(in9_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 9),
1023 };
1024
1025 static struct sensor_device_attribute sda_in_max[] = {
1026 SENSOR_ATTR(in0_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 0),
1027 SENSOR_ATTR(in1_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 1),
1028 SENSOR_ATTR(in2_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 2),
1029 SENSOR_ATTR(in3_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 3),
1030 SENSOR_ATTR(in4_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 4),
1031 SENSOR_ATTR(in5_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 5),
1032 SENSOR_ATTR(in6_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 6),
1033 SENSOR_ATTR(in7_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 7),
1034 SENSOR_ATTR(in8_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 8),
1035 SENSOR_ATTR(in9_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 9),
1036 };
1037
1038 static ssize_t
1039 show_fan(struct device *dev, struct device_attribute *attr, char *buf)
1040 {
1041 struct w83627ehf_data *data = w83627ehf_update_device(dev);
1042 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1043 int nr = sensor_attr->index;
1044 return sprintf(buf, "%d\n", data->rpm[nr]);
1045 }
1046
1047 static ssize_t
1048 show_fan_min(struct device *dev, struct device_attribute *attr, char *buf)
1049 {
1050 struct w83627ehf_data *data = w83627ehf_update_device(dev);
1051 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1052 int nr = sensor_attr->index;
1053 return sprintf(buf, "%d\n",
1054 data->fan_from_reg_min(data->fan_min[nr],
1055 data->fan_div[nr]));
1056 }
1057
1058 static ssize_t
1059 show_fan_div(struct device *dev, struct device_attribute *attr,
1060 char *buf)
1061 {
1062 struct w83627ehf_data *data = w83627ehf_update_device(dev);
1063 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1064 int nr = sensor_attr->index;
1065 return sprintf(buf, "%u\n", div_from_reg(data->fan_div[nr]));
1066 }
1067
1068 static ssize_t
1069 store_fan_min(struct device *dev, struct device_attribute *attr,
1070 const char *buf, size_t count)
1071 {
1072 struct w83627ehf_data *data = dev_get_drvdata(dev);
1073 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1074 int nr = sensor_attr->index;
1075 unsigned long val;
1076 int err;
1077 unsigned int reg;
1078 u8 new_div;
1079
1080 err = kstrtoul(buf, 10, &val);
1081 if (err < 0)
1082 return err;
1083
1084 mutex_lock(&data->update_lock);
1085 if (!data->has_fan_div) {
1086 /*
1087 * Only NCT6776F for now, so we know that this is a 13 bit
1088 * register
1089 */
1090 if (!val) {
1091 val = 0xff1f;
1092 } else {
1093 if (val > 1350000U)
1094 val = 135000U;
1095 val = 1350000U / val;
1096 val = (val & 0x1f) | ((val << 3) & 0xff00);
1097 }
1098 data->fan_min[nr] = val;
1099 goto done; /* Leave fan divider alone */
1100 }
1101 if (!val) {
1102 /* No min limit, alarm disabled */
1103 data->fan_min[nr] = 255;
1104 new_div = data->fan_div[nr]; /* No change */
1105 dev_info(dev, "fan%u low limit and alarm disabled\n", nr + 1);
1106 } else if ((reg = 1350000U / val) >= 128 * 255) {
1107 /*
1108 * Speed below this value cannot possibly be represented,
1109 * even with the highest divider (128)
1110 */
1111 data->fan_min[nr] = 254;
1112 new_div = 7; /* 128 == (1 << 7) */
1113 dev_warn(dev,
1114 "fan%u low limit %lu below minimum %u, set to minimum\n",
1115 nr + 1, val, data->fan_from_reg_min(254, 7));
1116 } else if (!reg) {
1117 /*
1118 * Speed above this value cannot possibly be represented,
1119 * even with the lowest divider (1)
1120 */
1121 data->fan_min[nr] = 1;
1122 new_div = 0; /* 1 == (1 << 0) */
1123 dev_warn(dev,
1124 "fan%u low limit %lu above maximum %u, set to maximum\n",
1125 nr + 1, val, data->fan_from_reg_min(1, 0));
1126 } else {
1127 /*
1128 * Automatically pick the best divider, i.e. the one such
1129 * that the min limit will correspond to a register value
1130 * in the 96..192 range
1131 */
1132 new_div = 0;
1133 while (reg > 192 && new_div < 7) {
1134 reg >>= 1;
1135 new_div++;
1136 }
1137 data->fan_min[nr] = reg;
1138 }
1139
1140 /*
1141 * Write both the fan clock divider (if it changed) and the new
1142 * fan min (unconditionally)
1143 */
1144 if (new_div != data->fan_div[nr]) {
1145 dev_dbg(dev, "fan%u clock divider changed from %u to %u\n",
1146 nr + 1, div_from_reg(data->fan_div[nr]),
1147 div_from_reg(new_div));
1148 data->fan_div[nr] = new_div;
1149 w83627ehf_write_fan_div_common(dev, data, nr);
1150 /* Give the chip time to sample a new speed value */
1151 data->last_updated = jiffies;
1152 }
1153 done:
1154 w83627ehf_write_value(data, data->REG_FAN_MIN[nr],
1155 data->fan_min[nr]);
1156 mutex_unlock(&data->update_lock);
1157
1158 return count;
1159 }
1160
1161 static struct sensor_device_attribute sda_fan_input[] = {
1162 SENSOR_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0),
1163 SENSOR_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1),
1164 SENSOR_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2),
1165 SENSOR_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3),
1166 SENSOR_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 4),
1167 };
1168
1169 static struct sensor_device_attribute sda_fan_alarm[] = {
1170 SENSOR_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6),
1171 SENSOR_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7),
1172 SENSOR_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 11),
1173 SENSOR_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 10),
1174 SENSOR_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 23),
1175 };
1176
1177 static struct sensor_device_attribute sda_fan_min[] = {
1178 SENSOR_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan_min,
1179 store_fan_min, 0),
1180 SENSOR_ATTR(fan2_min, S_IWUSR | S_IRUGO, show_fan_min,
1181 store_fan_min, 1),
1182 SENSOR_ATTR(fan3_min, S_IWUSR | S_IRUGO, show_fan_min,
1183 store_fan_min, 2),
1184 SENSOR_ATTR(fan4_min, S_IWUSR | S_IRUGO, show_fan_min,
1185 store_fan_min, 3),
1186 SENSOR_ATTR(fan5_min, S_IWUSR | S_IRUGO, show_fan_min,
1187 store_fan_min, 4),
1188 };
1189
1190 static struct sensor_device_attribute sda_fan_div[] = {
1191 SENSOR_ATTR(fan1_div, S_IRUGO, show_fan_div, NULL, 0),
1192 SENSOR_ATTR(fan2_div, S_IRUGO, show_fan_div, NULL, 1),
1193 SENSOR_ATTR(fan3_div, S_IRUGO, show_fan_div, NULL, 2),
1194 SENSOR_ATTR(fan4_div, S_IRUGO, show_fan_div, NULL, 3),
1195 SENSOR_ATTR(fan5_div, S_IRUGO, show_fan_div, NULL, 4),
1196 };
1197
1198 static ssize_t
1199 show_temp_label(struct device *dev, struct device_attribute *attr, char *buf)
1200 {
1201 struct w83627ehf_data *data = w83627ehf_update_device(dev);
1202 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1203 int nr = sensor_attr->index;
1204 return sprintf(buf, "%s\n", data->temp_label[data->temp_src[nr]]);
1205 }
1206
1207 #define show_temp_reg(addr, reg) \
1208 static ssize_t \
1209 show_##reg(struct device *dev, struct device_attribute *attr, \
1210 char *buf) \
1211 { \
1212 struct w83627ehf_data *data = w83627ehf_update_device(dev); \
1213 struct sensor_device_attribute *sensor_attr = \
1214 to_sensor_dev_attr(attr); \
1215 int nr = sensor_attr->index; \
1216 return sprintf(buf, "%d\n", LM75_TEMP_FROM_REG(data->reg[nr])); \
1217 }
1218 show_temp_reg(reg_temp, temp);
1219 show_temp_reg(reg_temp_over, temp_max);
1220 show_temp_reg(reg_temp_hyst, temp_max_hyst);
1221
1222 #define store_temp_reg(addr, reg) \
1223 static ssize_t \
1224 store_##reg(struct device *dev, struct device_attribute *attr, \
1225 const char *buf, size_t count) \
1226 { \
1227 struct w83627ehf_data *data = dev_get_drvdata(dev); \
1228 struct sensor_device_attribute *sensor_attr = \
1229 to_sensor_dev_attr(attr); \
1230 int nr = sensor_attr->index; \
1231 int err; \
1232 long val; \
1233 err = kstrtol(buf, 10, &val); \
1234 if (err < 0) \
1235 return err; \
1236 mutex_lock(&data->update_lock); \
1237 data->reg[nr] = LM75_TEMP_TO_REG(val); \
1238 w83627ehf_write_temp(data, data->addr[nr], data->reg[nr]); \
1239 mutex_unlock(&data->update_lock); \
1240 return count; \
1241 }
1242 store_temp_reg(reg_temp_over, temp_max);
1243 store_temp_reg(reg_temp_hyst, temp_max_hyst);
1244
1245 static ssize_t
1246 show_temp_offset(struct device *dev, struct device_attribute *attr, char *buf)
1247 {
1248 struct w83627ehf_data *data = w83627ehf_update_device(dev);
1249 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1250
1251 return sprintf(buf, "%d\n",
1252 data->temp_offset[sensor_attr->index] * 1000);
1253 }
1254
1255 static ssize_t
1256 store_temp_offset(struct device *dev, struct device_attribute *attr,
1257 const char *buf, size_t count)
1258 {
1259 struct w83627ehf_data *data = dev_get_drvdata(dev);
1260 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1261 int nr = sensor_attr->index;
1262 long val;
1263 int err;
1264
1265 err = kstrtol(buf, 10, &val);
1266 if (err < 0)
1267 return err;
1268
1269 val = clamp_val(DIV_ROUND_CLOSEST(val, 1000), -128, 127);
1270
1271 mutex_lock(&data->update_lock);
1272 data->temp_offset[nr] = val;
1273 w83627ehf_write_value(data, W83627EHF_REG_TEMP_OFFSET[nr], val);
1274 mutex_unlock(&data->update_lock);
1275 return count;
1276 }
1277
1278 static ssize_t
1279 show_temp_type(struct device *dev, struct device_attribute *attr, char *buf)
1280 {
1281 struct w83627ehf_data *data = w83627ehf_update_device(dev);
1282 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1283 int nr = sensor_attr->index;
1284 return sprintf(buf, "%d\n", (int)data->temp_type[nr]);
1285 }
1286
1287 static struct sensor_device_attribute sda_temp_input[] = {
1288 SENSOR_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0),
1289 SENSOR_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1),
1290 SENSOR_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2),
1291 SENSOR_ATTR(temp4_input, S_IRUGO, show_temp, NULL, 3),
1292 SENSOR_ATTR(temp5_input, S_IRUGO, show_temp, NULL, 4),
1293 SENSOR_ATTR(temp6_input, S_IRUGO, show_temp, NULL, 5),
1294 SENSOR_ATTR(temp7_input, S_IRUGO, show_temp, NULL, 6),
1295 SENSOR_ATTR(temp8_input, S_IRUGO, show_temp, NULL, 7),
1296 SENSOR_ATTR(temp9_input, S_IRUGO, show_temp, NULL, 8),
1297 };
1298
1299 static struct sensor_device_attribute sda_temp_label[] = {
1300 SENSOR_ATTR(temp1_label, S_IRUGO, show_temp_label, NULL, 0),
1301 SENSOR_ATTR(temp2_label, S_IRUGO, show_temp_label, NULL, 1),
1302 SENSOR_ATTR(temp3_label, S_IRUGO, show_temp_label, NULL, 2),
1303 SENSOR_ATTR(temp4_label, S_IRUGO, show_temp_label, NULL, 3),
1304 SENSOR_ATTR(temp5_label, S_IRUGO, show_temp_label, NULL, 4),
1305 SENSOR_ATTR(temp6_label, S_IRUGO, show_temp_label, NULL, 5),
1306 SENSOR_ATTR(temp7_label, S_IRUGO, show_temp_label, NULL, 6),
1307 SENSOR_ATTR(temp8_label, S_IRUGO, show_temp_label, NULL, 7),
1308 SENSOR_ATTR(temp9_label, S_IRUGO, show_temp_label, NULL, 8),
1309 };
1310
1311 static struct sensor_device_attribute sda_temp_max[] = {
1312 SENSOR_ATTR(temp1_max, S_IRUGO | S_IWUSR, show_temp_max,
1313 store_temp_max, 0),
1314 SENSOR_ATTR(temp2_max, S_IRUGO | S_IWUSR, show_temp_max,
1315 store_temp_max, 1),
1316 SENSOR_ATTR(temp3_max, S_IRUGO | S_IWUSR, show_temp_max,
1317 store_temp_max, 2),
1318 SENSOR_ATTR(temp4_max, S_IRUGO | S_IWUSR, show_temp_max,
1319 store_temp_max, 3),
1320 SENSOR_ATTR(temp5_max, S_IRUGO | S_IWUSR, show_temp_max,
1321 store_temp_max, 4),
1322 SENSOR_ATTR(temp6_max, S_IRUGO | S_IWUSR, show_temp_max,
1323 store_temp_max, 5),
1324 SENSOR_ATTR(temp7_max, S_IRUGO | S_IWUSR, show_temp_max,
1325 store_temp_max, 6),
1326 SENSOR_ATTR(temp8_max, S_IRUGO | S_IWUSR, show_temp_max,
1327 store_temp_max, 7),
1328 SENSOR_ATTR(temp9_max, S_IRUGO | S_IWUSR, show_temp_max,
1329 store_temp_max, 8),
1330 };
1331
1332 static struct sensor_device_attribute sda_temp_max_hyst[] = {
1333 SENSOR_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
1334 store_temp_max_hyst, 0),
1335 SENSOR_ATTR(temp2_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
1336 store_temp_max_hyst, 1),
1337 SENSOR_ATTR(temp3_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
1338 store_temp_max_hyst, 2),
1339 SENSOR_ATTR(temp4_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
1340 store_temp_max_hyst, 3),
1341 SENSOR_ATTR(temp5_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
1342 store_temp_max_hyst, 4),
1343 SENSOR_ATTR(temp6_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
1344 store_temp_max_hyst, 5),
1345 SENSOR_ATTR(temp7_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
1346 store_temp_max_hyst, 6),
1347 SENSOR_ATTR(temp8_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
1348 store_temp_max_hyst, 7),
1349 SENSOR_ATTR(temp9_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
1350 store_temp_max_hyst, 8),
1351 };
1352
1353 static struct sensor_device_attribute sda_temp_alarm[] = {
1354 SENSOR_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4),
1355 SENSOR_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5),
1356 SENSOR_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 13),
1357 };
1358
1359 static struct sensor_device_attribute sda_temp_type[] = {
1360 SENSOR_ATTR(temp1_type, S_IRUGO, show_temp_type, NULL, 0),
1361 SENSOR_ATTR(temp2_type, S_IRUGO, show_temp_type, NULL, 1),
1362 SENSOR_ATTR(temp3_type, S_IRUGO, show_temp_type, NULL, 2),
1363 };
1364
1365 static struct sensor_device_attribute sda_temp_offset[] = {
1366 SENSOR_ATTR(temp1_offset, S_IRUGO | S_IWUSR, show_temp_offset,
1367 store_temp_offset, 0),
1368 SENSOR_ATTR(temp2_offset, S_IRUGO | S_IWUSR, show_temp_offset,
1369 store_temp_offset, 1),
1370 SENSOR_ATTR(temp3_offset, S_IRUGO | S_IWUSR, show_temp_offset,
1371 store_temp_offset, 2),
1372 };
1373
1374 #define show_pwm_reg(reg) \
1375 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
1376 char *buf) \
1377 { \
1378 struct w83627ehf_data *data = w83627ehf_update_device(dev); \
1379 struct sensor_device_attribute *sensor_attr = \
1380 to_sensor_dev_attr(attr); \
1381 int nr = sensor_attr->index; \
1382 return sprintf(buf, "%d\n", data->reg[nr]); \
1383 }
1384
1385 show_pwm_reg(pwm_mode)
1386 show_pwm_reg(pwm_enable)
1387 show_pwm_reg(pwm)
1388
1389 static ssize_t
1390 store_pwm_mode(struct device *dev, struct device_attribute *attr,
1391 const char *buf, size_t count)
1392 {
1393 struct w83627ehf_data *data = dev_get_drvdata(dev);
1394 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1395 struct w83627ehf_sio_data *sio_data = dev_get_platdata(dev);
1396 int nr = sensor_attr->index;
1397 unsigned long val;
1398 int err;
1399 u16 reg;
1400
1401 err = kstrtoul(buf, 10, &val);
1402 if (err < 0)
1403 return err;
1404
1405 if (val > 1)
1406 return -EINVAL;
1407
1408 /* On NCT67766F, DC mode is only supported for pwm1 */
1409 if (sio_data->kind == nct6776 && nr && val != 1)
1410 return -EINVAL;
1411
1412 mutex_lock(&data->update_lock);
1413 reg = w83627ehf_read_value(data, W83627EHF_REG_PWM_ENABLE[nr]);
1414 data->pwm_mode[nr] = val;
1415 reg &= ~(1 << W83627EHF_PWM_MODE_SHIFT[nr]);
1416 if (!val)
1417 reg |= 1 << W83627EHF_PWM_MODE_SHIFT[nr];
1418 w83627ehf_write_value(data, W83627EHF_REG_PWM_ENABLE[nr], reg);
1419 mutex_unlock(&data->update_lock);
1420 return count;
1421 }
1422
1423 static ssize_t
1424 store_pwm(struct device *dev, struct device_attribute *attr,
1425 const char *buf, size_t count)
1426 {
1427 struct w83627ehf_data *data = dev_get_drvdata(dev);
1428 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1429 int nr = sensor_attr->index;
1430 unsigned long val;
1431 int err;
1432
1433 err = kstrtoul(buf, 10, &val);
1434 if (err < 0)
1435 return err;
1436
1437 val = clamp_val(val, 0, 255);
1438
1439 mutex_lock(&data->update_lock);
1440 data->pwm[nr] = val;
1441 w83627ehf_write_value(data, data->REG_PWM[nr], val);
1442 mutex_unlock(&data->update_lock);
1443 return count;
1444 }
1445
1446 static ssize_t
1447 store_pwm_enable(struct device *dev, struct device_attribute *attr,
1448 const char *buf, size_t count)
1449 {
1450 struct w83627ehf_data *data = dev_get_drvdata(dev);
1451 struct w83627ehf_sio_data *sio_data = dev_get_platdata(dev);
1452 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1453 int nr = sensor_attr->index;
1454 unsigned long val;
1455 int err;
1456 u16 reg;
1457
1458 err = kstrtoul(buf, 10, &val);
1459 if (err < 0)
1460 return err;
1461
1462 if (!val || (val > 4 && val != data->pwm_enable_orig[nr]))
1463 return -EINVAL;
1464 /* SmartFan III mode is not supported on NCT6776F */
1465 if (sio_data->kind == nct6776 && val == 4)
1466 return -EINVAL;
1467
1468 mutex_lock(&data->update_lock);
1469 data->pwm_enable[nr] = val;
1470 if (sio_data->kind == nct6775 || sio_data->kind == nct6776) {
1471 reg = w83627ehf_read_value(data,
1472 NCT6775_REG_FAN_MODE[nr]);
1473 reg &= 0x0f;
1474 reg |= (val - 1) << 4;
1475 w83627ehf_write_value(data,
1476 NCT6775_REG_FAN_MODE[nr], reg);
1477 } else {
1478 reg = w83627ehf_read_value(data, W83627EHF_REG_PWM_ENABLE[nr]);
1479 reg &= ~(0x03 << W83627EHF_PWM_ENABLE_SHIFT[nr]);
1480 reg |= (val - 1) << W83627EHF_PWM_ENABLE_SHIFT[nr];
1481 w83627ehf_write_value(data, W83627EHF_REG_PWM_ENABLE[nr], reg);
1482 }
1483 mutex_unlock(&data->update_lock);
1484 return count;
1485 }
1486
1487
1488 #define show_tol_temp(reg) \
1489 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
1490 char *buf) \
1491 { \
1492 struct w83627ehf_data *data = w83627ehf_update_device(dev); \
1493 struct sensor_device_attribute *sensor_attr = \
1494 to_sensor_dev_attr(attr); \
1495 int nr = sensor_attr->index; \
1496 return sprintf(buf, "%d\n", data->reg[nr] * 1000); \
1497 }
1498
1499 show_tol_temp(tolerance)
1500 show_tol_temp(target_temp)
1501
1502 static ssize_t
1503 store_target_temp(struct device *dev, struct device_attribute *attr,
1504 const char *buf, size_t count)
1505 {
1506 struct w83627ehf_data *data = dev_get_drvdata(dev);
1507 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1508 int nr = sensor_attr->index;
1509 long val;
1510 int err;
1511
1512 err = kstrtol(buf, 10, &val);
1513 if (err < 0)
1514 return err;
1515
1516 val = clamp_val(DIV_ROUND_CLOSEST(val, 1000), 0, 127);
1517
1518 mutex_lock(&data->update_lock);
1519 data->target_temp[nr] = val;
1520 w83627ehf_write_value(data, data->REG_TARGET[nr], val);
1521 mutex_unlock(&data->update_lock);
1522 return count;
1523 }
1524
1525 static ssize_t
1526 store_tolerance(struct device *dev, struct device_attribute *attr,
1527 const char *buf, size_t count)
1528 {
1529 struct w83627ehf_data *data = dev_get_drvdata(dev);
1530 struct w83627ehf_sio_data *sio_data = dev_get_platdata(dev);
1531 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1532 int nr = sensor_attr->index;
1533 u16 reg;
1534 long val;
1535 int err;
1536
1537 err = kstrtol(buf, 10, &val);
1538 if (err < 0)
1539 return err;
1540
1541 /* Limit the temp to 0C - 15C */
1542 val = clamp_val(DIV_ROUND_CLOSEST(val, 1000), 0, 15);
1543
1544 mutex_lock(&data->update_lock);
1545 if (sio_data->kind == nct6775 || sio_data->kind == nct6776) {
1546 /* Limit tolerance further for NCT6776F */
1547 if (sio_data->kind == nct6776 && val > 7)
1548 val = 7;
1549 reg = w83627ehf_read_value(data, NCT6775_REG_FAN_MODE[nr]);
1550 reg = (reg & 0xf0) | val;
1551 w83627ehf_write_value(data, NCT6775_REG_FAN_MODE[nr], reg);
1552 } else {
1553 reg = w83627ehf_read_value(data, W83627EHF_REG_TOLERANCE[nr]);
1554 if (nr == 1)
1555 reg = (reg & 0x0f) | (val << 4);
1556 else
1557 reg = (reg & 0xf0) | val;
1558 w83627ehf_write_value(data, W83627EHF_REG_TOLERANCE[nr], reg);
1559 }
1560 data->tolerance[nr] = val;
1561 mutex_unlock(&data->update_lock);
1562 return count;
1563 }
1564
1565 static struct sensor_device_attribute sda_pwm[] = {
1566 SENSOR_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 0),
1567 SENSOR_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 1),
1568 SENSOR_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 2),
1569 SENSOR_ATTR(pwm4, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 3),
1570 };
1571
1572 static struct sensor_device_attribute sda_pwm_mode[] = {
1573 SENSOR_ATTR(pwm1_mode, S_IWUSR | S_IRUGO, show_pwm_mode,
1574 store_pwm_mode, 0),
1575 SENSOR_ATTR(pwm2_mode, S_IWUSR | S_IRUGO, show_pwm_mode,
1576 store_pwm_mode, 1),
1577 SENSOR_ATTR(pwm3_mode, S_IWUSR | S_IRUGO, show_pwm_mode,
1578 store_pwm_mode, 2),
1579 SENSOR_ATTR(pwm4_mode, S_IWUSR | S_IRUGO, show_pwm_mode,
1580 store_pwm_mode, 3),
1581 };
1582
1583 static struct sensor_device_attribute sda_pwm_enable[] = {
1584 SENSOR_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, show_pwm_enable,
1585 store_pwm_enable, 0),
1586 SENSOR_ATTR(pwm2_enable, S_IWUSR | S_IRUGO, show_pwm_enable,
1587 store_pwm_enable, 1),
1588 SENSOR_ATTR(pwm3_enable, S_IWUSR | S_IRUGO, show_pwm_enable,
1589 store_pwm_enable, 2),
1590 SENSOR_ATTR(pwm4_enable, S_IWUSR | S_IRUGO, show_pwm_enable,
1591 store_pwm_enable, 3),
1592 };
1593
1594 static struct sensor_device_attribute sda_target_temp[] = {
1595 SENSOR_ATTR(pwm1_target, S_IWUSR | S_IRUGO, show_target_temp,
1596 store_target_temp, 0),
1597 SENSOR_ATTR(pwm2_target, S_IWUSR | S_IRUGO, show_target_temp,
1598 store_target_temp, 1),
1599 SENSOR_ATTR(pwm3_target, S_IWUSR | S_IRUGO, show_target_temp,
1600 store_target_temp, 2),
1601 SENSOR_ATTR(pwm4_target, S_IWUSR | S_IRUGO, show_target_temp,
1602 store_target_temp, 3),
1603 };
1604
1605 static struct sensor_device_attribute sda_tolerance[] = {
1606 SENSOR_ATTR(pwm1_tolerance, S_IWUSR | S_IRUGO, show_tolerance,
1607 store_tolerance, 0),
1608 SENSOR_ATTR(pwm2_tolerance, S_IWUSR | S_IRUGO, show_tolerance,
1609 store_tolerance, 1),
1610 SENSOR_ATTR(pwm3_tolerance, S_IWUSR | S_IRUGO, show_tolerance,
1611 store_tolerance, 2),
1612 SENSOR_ATTR(pwm4_tolerance, S_IWUSR | S_IRUGO, show_tolerance,
1613 store_tolerance, 3),
1614 };
1615
1616 /* Smart Fan registers */
1617
1618 #define fan_functions(reg, REG) \
1619 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
1620 char *buf) \
1621 { \
1622 struct w83627ehf_data *data = w83627ehf_update_device(dev); \
1623 struct sensor_device_attribute *sensor_attr = \
1624 to_sensor_dev_attr(attr); \
1625 int nr = sensor_attr->index; \
1626 return sprintf(buf, "%d\n", data->reg[nr]); \
1627 } \
1628 static ssize_t \
1629 store_##reg(struct device *dev, struct device_attribute *attr, \
1630 const char *buf, size_t count) \
1631 { \
1632 struct w83627ehf_data *data = dev_get_drvdata(dev); \
1633 struct sensor_device_attribute *sensor_attr = \
1634 to_sensor_dev_attr(attr); \
1635 int nr = sensor_attr->index; \
1636 unsigned long val; \
1637 int err; \
1638 err = kstrtoul(buf, 10, &val); \
1639 if (err < 0) \
1640 return err; \
1641 val = clamp_val(val, 1, 255); \
1642 mutex_lock(&data->update_lock); \
1643 data->reg[nr] = val; \
1644 w83627ehf_write_value(data, data->REG_##REG[nr], val); \
1645 mutex_unlock(&data->update_lock); \
1646 return count; \
1647 }
1648
1649 fan_functions(fan_start_output, FAN_START_OUTPUT)
1650 fan_functions(fan_stop_output, FAN_STOP_OUTPUT)
1651 fan_functions(fan_max_output, FAN_MAX_OUTPUT)
1652 fan_functions(fan_step_output, FAN_STEP_OUTPUT)
1653
1654 #define fan_time_functions(reg, REG) \
1655 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
1656 char *buf) \
1657 { \
1658 struct w83627ehf_data *data = w83627ehf_update_device(dev); \
1659 struct sensor_device_attribute *sensor_attr = \
1660 to_sensor_dev_attr(attr); \
1661 int nr = sensor_attr->index; \
1662 return sprintf(buf, "%d\n", \
1663 step_time_from_reg(data->reg[nr], \
1664 data->pwm_mode[nr])); \
1665 } \
1666 \
1667 static ssize_t \
1668 store_##reg(struct device *dev, struct device_attribute *attr, \
1669 const char *buf, size_t count) \
1670 { \
1671 struct w83627ehf_data *data = dev_get_drvdata(dev); \
1672 struct sensor_device_attribute *sensor_attr = \
1673 to_sensor_dev_attr(attr); \
1674 int nr = sensor_attr->index; \
1675 unsigned long val; \
1676 int err; \
1677 err = kstrtoul(buf, 10, &val); \
1678 if (err < 0) \
1679 return err; \
1680 val = step_time_to_reg(val, data->pwm_mode[nr]); \
1681 mutex_lock(&data->update_lock); \
1682 data->reg[nr] = val; \
1683 w83627ehf_write_value(data, data->REG_##REG[nr], val); \
1684 mutex_unlock(&data->update_lock); \
1685 return count; \
1686 } \
1687
1688 fan_time_functions(fan_stop_time, FAN_STOP_TIME)
1689
1690 static ssize_t show_name(struct device *dev, struct device_attribute *attr,
1691 char *buf)
1692 {
1693 struct w83627ehf_data *data = dev_get_drvdata(dev);
1694
1695 return sprintf(buf, "%s\n", data->name);
1696 }
1697 static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
1698
1699 static struct sensor_device_attribute sda_sf3_arrays_fan4[] = {
1700 SENSOR_ATTR(pwm4_stop_time, S_IWUSR | S_IRUGO, show_fan_stop_time,
1701 store_fan_stop_time, 3),
1702 SENSOR_ATTR(pwm4_start_output, S_IWUSR | S_IRUGO, show_fan_start_output,
1703 store_fan_start_output, 3),
1704 SENSOR_ATTR(pwm4_stop_output, S_IWUSR | S_IRUGO, show_fan_stop_output,
1705 store_fan_stop_output, 3),
1706 SENSOR_ATTR(pwm4_max_output, S_IWUSR | S_IRUGO, show_fan_max_output,
1707 store_fan_max_output, 3),
1708 SENSOR_ATTR(pwm4_step_output, S_IWUSR | S_IRUGO, show_fan_step_output,
1709 store_fan_step_output, 3),
1710 };
1711
1712 static struct sensor_device_attribute sda_sf3_arrays_fan3[] = {
1713 SENSOR_ATTR(pwm3_stop_time, S_IWUSR | S_IRUGO, show_fan_stop_time,
1714 store_fan_stop_time, 2),
1715 SENSOR_ATTR(pwm3_start_output, S_IWUSR | S_IRUGO, show_fan_start_output,
1716 store_fan_start_output, 2),
1717 SENSOR_ATTR(pwm3_stop_output, S_IWUSR | S_IRUGO, show_fan_stop_output,
1718 store_fan_stop_output, 2),
1719 };
1720
1721 static struct sensor_device_attribute sda_sf3_arrays[] = {
1722 SENSOR_ATTR(pwm1_stop_time, S_IWUSR | S_IRUGO, show_fan_stop_time,
1723 store_fan_stop_time, 0),
1724 SENSOR_ATTR(pwm2_stop_time, S_IWUSR | S_IRUGO, show_fan_stop_time,
1725 store_fan_stop_time, 1),
1726 SENSOR_ATTR(pwm1_start_output, S_IWUSR | S_IRUGO, show_fan_start_output,
1727 store_fan_start_output, 0),
1728 SENSOR_ATTR(pwm2_start_output, S_IWUSR | S_IRUGO, show_fan_start_output,
1729 store_fan_start_output, 1),
1730 SENSOR_ATTR(pwm1_stop_output, S_IWUSR | S_IRUGO, show_fan_stop_output,
1731 store_fan_stop_output, 0),
1732 SENSOR_ATTR(pwm2_stop_output, S_IWUSR | S_IRUGO, show_fan_stop_output,
1733 store_fan_stop_output, 1),
1734 };
1735
1736
1737 /*
1738 * pwm1 and pwm3 don't support max and step settings on all chips.
1739 * Need to check support while generating/removing attribute files.
1740 */
1741 static struct sensor_device_attribute sda_sf3_max_step_arrays[] = {
1742 SENSOR_ATTR(pwm1_max_output, S_IWUSR | S_IRUGO, show_fan_max_output,
1743 store_fan_max_output, 0),
1744 SENSOR_ATTR(pwm1_step_output, S_IWUSR | S_IRUGO, show_fan_step_output,
1745 store_fan_step_output, 0),
1746 SENSOR_ATTR(pwm2_max_output, S_IWUSR | S_IRUGO, show_fan_max_output,
1747 store_fan_max_output, 1),
1748 SENSOR_ATTR(pwm2_step_output, S_IWUSR | S_IRUGO, show_fan_step_output,
1749 store_fan_step_output, 1),
1750 SENSOR_ATTR(pwm3_max_output, S_IWUSR | S_IRUGO, show_fan_max_output,
1751 store_fan_max_output, 2),
1752 SENSOR_ATTR(pwm3_step_output, S_IWUSR | S_IRUGO, show_fan_step_output,
1753 store_fan_step_output, 2),
1754 };
1755
1756 static ssize_t
1757 show_vid(struct device *dev, struct device_attribute *attr, char *buf)
1758 {
1759 struct w83627ehf_data *data = dev_get_drvdata(dev);
1760 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
1761 }
1762 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
1763
1764
1765 /* Case open detection */
1766
1767 static ssize_t
1768 show_caseopen(struct device *dev, struct device_attribute *attr, char *buf)
1769 {
1770 struct w83627ehf_data *data = w83627ehf_update_device(dev);
1771
1772 return sprintf(buf, "%d\n",
1773 !!(data->caseopen & to_sensor_dev_attr_2(attr)->index));
1774 }
1775
1776 static ssize_t
1777 clear_caseopen(struct device *dev, struct device_attribute *attr,
1778 const char *buf, size_t count)
1779 {
1780 struct w83627ehf_data *data = dev_get_drvdata(dev);
1781 unsigned long val;
1782 u16 reg, mask;
1783
1784 if (kstrtoul(buf, 10, &val) || val != 0)
1785 return -EINVAL;
1786
1787 mask = to_sensor_dev_attr_2(attr)->nr;
1788
1789 mutex_lock(&data->update_lock);
1790 reg = w83627ehf_read_value(data, W83627EHF_REG_CASEOPEN_CLR);
1791 w83627ehf_write_value(data, W83627EHF_REG_CASEOPEN_CLR, reg | mask);
1792 w83627ehf_write_value(data, W83627EHF_REG_CASEOPEN_CLR, reg & ~mask);
1793 data->valid = 0; /* Force cache refresh */
1794 mutex_unlock(&data->update_lock);
1795
1796 return count;
1797 }
1798
1799 static struct sensor_device_attribute_2 sda_caseopen[] = {
1800 SENSOR_ATTR_2(intrusion0_alarm, S_IWUSR | S_IRUGO, show_caseopen,
1801 clear_caseopen, 0x80, 0x10),
1802 SENSOR_ATTR_2(intrusion1_alarm, S_IWUSR | S_IRUGO, show_caseopen,
1803 clear_caseopen, 0x40, 0x40),
1804 };
1805
1806 /*
1807 * Driver and device management
1808 */
1809
1810 static void w83627ehf_device_remove_files(struct device *dev)
1811 {
1812 /*
1813 * some entries in the following arrays may not have been used in
1814 * device_create_file(), but device_remove_file() will ignore them
1815 */
1816 int i;
1817 struct w83627ehf_data *data = dev_get_drvdata(dev);
1818
1819 for (i = 0; i < ARRAY_SIZE(sda_sf3_arrays); i++)
1820 device_remove_file(dev, &sda_sf3_arrays[i].dev_attr);
1821 for (i = 0; i < ARRAY_SIZE(sda_sf3_max_step_arrays); i++) {
1822 struct sensor_device_attribute *attr =
1823 &sda_sf3_max_step_arrays[i];
1824 if (data->REG_FAN_STEP_OUTPUT &&
1825 data->REG_FAN_STEP_OUTPUT[attr->index] != 0xff)
1826 device_remove_file(dev, &attr->dev_attr);
1827 }
1828 for (i = 0; i < ARRAY_SIZE(sda_sf3_arrays_fan3); i++)
1829 device_remove_file(dev, &sda_sf3_arrays_fan3[i].dev_attr);
1830 for (i = 0; i < ARRAY_SIZE(sda_sf3_arrays_fan4); i++)
1831 device_remove_file(dev, &sda_sf3_arrays_fan4[i].dev_attr);
1832 for (i = 0; i < data->in_num; i++) {
1833 if ((i == 6) && data->in6_skip)
1834 continue;
1835 device_remove_file(dev, &sda_in_input[i].dev_attr);
1836 device_remove_file(dev, &sda_in_alarm[i].dev_attr);
1837 device_remove_file(dev, &sda_in_min[i].dev_attr);
1838 device_remove_file(dev, &sda_in_max[i].dev_attr);
1839 }
1840 for (i = 0; i < 5; i++) {
1841 device_remove_file(dev, &sda_fan_input[i].dev_attr);
1842 device_remove_file(dev, &sda_fan_alarm[i].dev_attr);
1843 device_remove_file(dev, &sda_fan_div[i].dev_attr);
1844 device_remove_file(dev, &sda_fan_min[i].dev_attr);
1845 }
1846 for (i = 0; i < data->pwm_num; i++) {
1847 device_remove_file(dev, &sda_pwm[i].dev_attr);
1848 device_remove_file(dev, &sda_pwm_mode[i].dev_attr);
1849 device_remove_file(dev, &sda_pwm_enable[i].dev_attr);
1850 device_remove_file(dev, &sda_target_temp[i].dev_attr);
1851 device_remove_file(dev, &sda_tolerance[i].dev_attr);
1852 }
1853 for (i = 0; i < NUM_REG_TEMP; i++) {
1854 if (!(data->have_temp & (1 << i)))
1855 continue;
1856 device_remove_file(dev, &sda_temp_input[i].dev_attr);
1857 device_remove_file(dev, &sda_temp_label[i].dev_attr);
1858 if (i == 2 && data->temp3_val_only)
1859 continue;
1860 device_remove_file(dev, &sda_temp_max[i].dev_attr);
1861 device_remove_file(dev, &sda_temp_max_hyst[i].dev_attr);
1862 if (i > 2)
1863 continue;
1864 device_remove_file(dev, &sda_temp_alarm[i].dev_attr);
1865 device_remove_file(dev, &sda_temp_type[i].dev_attr);
1866 device_remove_file(dev, &sda_temp_offset[i].dev_attr);
1867 }
1868
1869 device_remove_file(dev, &sda_caseopen[0].dev_attr);
1870 device_remove_file(dev, &sda_caseopen[1].dev_attr);
1871
1872 device_remove_file(dev, &dev_attr_name);
1873 device_remove_file(dev, &dev_attr_cpu0_vid);
1874 }
1875
1876 /* Get the monitoring functions started */
1877 static inline void w83627ehf_init_device(struct w83627ehf_data *data,
1878 enum kinds kind)
1879 {
1880 int i;
1881 u8 tmp, diode;
1882
1883 /* Start monitoring is needed */
1884 tmp = w83627ehf_read_value(data, W83627EHF_REG_CONFIG);
1885 if (!(tmp & 0x01))
1886 w83627ehf_write_value(data, W83627EHF_REG_CONFIG,
1887 tmp | 0x01);
1888
1889 /* Enable temperature sensors if needed */
1890 for (i = 0; i < NUM_REG_TEMP; i++) {
1891 if (!(data->have_temp & (1 << i)))
1892 continue;
1893 if (!data->reg_temp_config[i])
1894 continue;
1895 tmp = w83627ehf_read_value(data,
1896 data->reg_temp_config[i]);
1897 if (tmp & 0x01)
1898 w83627ehf_write_value(data,
1899 data->reg_temp_config[i],
1900 tmp & 0xfe);
1901 }
1902
1903 /* Enable VBAT monitoring if needed */
1904 tmp = w83627ehf_read_value(data, W83627EHF_REG_VBAT);
1905 if (!(tmp & 0x01))
1906 w83627ehf_write_value(data, W83627EHF_REG_VBAT, tmp | 0x01);
1907
1908 /* Get thermal sensor types */
1909 switch (kind) {
1910 case w83627ehf:
1911 diode = w83627ehf_read_value(data, W83627EHF_REG_DIODE);
1912 break;
1913 case w83627uhg:
1914 diode = 0x00;
1915 break;
1916 default:
1917 diode = 0x70;
1918 }
1919 for (i = 0; i < 3; i++) {
1920 const char *label = NULL;
1921
1922 if (data->temp_label)
1923 label = data->temp_label[data->temp_src[i]];
1924
1925 /* Digital source overrides analog type */
1926 if (label && strncmp(label, "PECI", 4) == 0)
1927 data->temp_type[i] = 6;
1928 else if (label && strncmp(label, "AMD", 3) == 0)
1929 data->temp_type[i] = 5;
1930 else if ((tmp & (0x02 << i)))
1931 data->temp_type[i] = (diode & (0x10 << i)) ? 1 : 3;
1932 else
1933 data->temp_type[i] = 4; /* thermistor */
1934 }
1935 }
1936
1937 static void w82627ehf_swap_tempreg(struct w83627ehf_data *data,
1938 int r1, int r2)
1939 {
1940 swap(data->temp_src[r1], data->temp_src[r2]);
1941 swap(data->reg_temp[r1], data->reg_temp[r2]);
1942 swap(data->reg_temp_over[r1], data->reg_temp_over[r2]);
1943 swap(data->reg_temp_hyst[r1], data->reg_temp_hyst[r2]);
1944 swap(data->reg_temp_config[r1], data->reg_temp_config[r2]);
1945 }
1946
1947 static void
1948 w83627ehf_set_temp_reg_ehf(struct w83627ehf_data *data, int n_temp)
1949 {
1950 int i;
1951
1952 for (i = 0; i < n_temp; i++) {
1953 data->reg_temp[i] = W83627EHF_REG_TEMP[i];
1954 data->reg_temp_over[i] = W83627EHF_REG_TEMP_OVER[i];
1955 data->reg_temp_hyst[i] = W83627EHF_REG_TEMP_HYST[i];
1956 data->reg_temp_config[i] = W83627EHF_REG_TEMP_CONFIG[i];
1957 }
1958 }
1959
1960 static void
1961 w83627ehf_check_fan_inputs(const struct w83627ehf_sio_data *sio_data,
1962 struct w83627ehf_data *data)
1963 {
1964 int fan3pin, fan4pin, fan4min, fan5pin, regval;
1965
1966 /* The W83627UHG is simple, only two fan inputs, no config */
1967 if (sio_data->kind == w83627uhg) {
1968 data->has_fan = 0x03; /* fan1 and fan2 */
1969 data->has_fan_min = 0x03;
1970 return;
1971 }
1972
1973 superio_enter(sio_data->sioreg);
1974
1975 /* fan4 and fan5 share some pins with the GPIO and serial flash */
1976 if (sio_data->kind == nct6775) {
1977 /* On NCT6775, fan4 shares pins with the fdc interface */
1978 fan3pin = 1;
1979 fan4pin = !(superio_inb(sio_data->sioreg, 0x2A) & 0x80);
1980 fan4min = 0;
1981 fan5pin = 0;
1982 } else if (sio_data->kind == nct6776) {
1983 bool gpok = superio_inb(sio_data->sioreg, 0x27) & 0x80;
1984
1985 superio_select(sio_data->sioreg, W83627EHF_LD_HWM);
1986 regval = superio_inb(sio_data->sioreg, SIO_REG_ENABLE);
1987
1988 if (regval & 0x80)
1989 fan3pin = gpok;
1990 else
1991 fan3pin = !(superio_inb(sio_data->sioreg, 0x24) & 0x40);
1992
1993 if (regval & 0x40)
1994 fan4pin = gpok;
1995 else
1996 fan4pin = !!(superio_inb(sio_data->sioreg, 0x1C) & 0x01);
1997
1998 if (regval & 0x20)
1999 fan5pin = gpok;
2000 else
2001 fan5pin = !!(superio_inb(sio_data->sioreg, 0x1C) & 0x02);
2002
2003 fan4min = fan4pin;
2004 } else if (sio_data->kind == w83667hg || sio_data->kind == w83667hg_b) {
2005 fan3pin = 1;
2006 fan4pin = superio_inb(sio_data->sioreg, 0x27) & 0x40;
2007 fan5pin = superio_inb(sio_data->sioreg, 0x27) & 0x20;
2008 fan4min = fan4pin;
2009 } else {
2010 fan3pin = 1;
2011 fan4pin = !(superio_inb(sio_data->sioreg, 0x29) & 0x06);
2012 fan5pin = !(superio_inb(sio_data->sioreg, 0x24) & 0x02);
2013 fan4min = fan4pin;
2014 }
2015
2016 superio_exit(sio_data->sioreg);
2017
2018 data->has_fan = data->has_fan_min = 0x03; /* fan1 and fan2 */
2019 data->has_fan |= (fan3pin << 2);
2020 data->has_fan_min |= (fan3pin << 2);
2021
2022 if (sio_data->kind == nct6775 || sio_data->kind == nct6776) {
2023 /*
2024 * NCT6775F and NCT6776F don't have the W83627EHF_REG_FANDIV1
2025 * register
2026 */
2027 data->has_fan |= (fan4pin << 3) | (fan5pin << 4);
2028 data->has_fan_min |= (fan4min << 3) | (fan5pin << 4);
2029 } else {
2030 /*
2031 * It looks like fan4 and fan5 pins can be alternatively used
2032 * as fan on/off switches, but fan5 control is write only :/
2033 * We assume that if the serial interface is disabled, designers
2034 * connected fan5 as input unless they are emitting log 1, which
2035 * is not the default.
2036 */
2037 regval = w83627ehf_read_value(data, W83627EHF_REG_FANDIV1);
2038 if ((regval & (1 << 2)) && fan4pin) {
2039 data->has_fan |= (1 << 3);
2040 data->has_fan_min |= (1 << 3);
2041 }
2042 if (!(regval & (1 << 1)) && fan5pin) {
2043 data->has_fan |= (1 << 4);
2044 data->has_fan_min |= (1 << 4);
2045 }
2046 }
2047 }
2048
2049 static int w83627ehf_probe(struct platform_device *pdev)
2050 {
2051 struct device *dev = &pdev->dev;
2052 struct w83627ehf_sio_data *sio_data = dev_get_platdata(dev);
2053 struct w83627ehf_data *data;
2054 struct resource *res;
2055 u8 en_vrm10;
2056 int i, err = 0;
2057
2058 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
2059 if (!request_region(res->start, IOREGION_LENGTH, DRVNAME)) {
2060 err = -EBUSY;
2061 dev_err(dev, "Failed to request region 0x%lx-0x%lx\n",
2062 (unsigned long)res->start,
2063 (unsigned long)res->start + IOREGION_LENGTH - 1);
2064 goto exit;
2065 }
2066
2067 data = devm_kzalloc(&pdev->dev, sizeof(struct w83627ehf_data),
2068 GFP_KERNEL);
2069 if (!data) {
2070 err = -ENOMEM;
2071 goto exit_release;
2072 }
2073
2074 data->addr = res->start;
2075 mutex_init(&data->lock);
2076 mutex_init(&data->update_lock);
2077 data->name = w83627ehf_device_names[sio_data->kind];
2078 data->bank = 0xff; /* Force initial bank selection */
2079 platform_set_drvdata(pdev, data);
2080
2081 /* 627EHG and 627EHF have 10 voltage inputs; 627DHG and 667HG have 9 */
2082 data->in_num = (sio_data->kind == w83627ehf) ? 10 : 9;
2083 /* 667HG, NCT6775F, and NCT6776F have 3 pwms, and 627UHG has only 2 */
2084 switch (sio_data->kind) {
2085 default:
2086 data->pwm_num = 4;
2087 break;
2088 case w83667hg:
2089 case w83667hg_b:
2090 case nct6775:
2091 case nct6776:
2092 data->pwm_num = 3;
2093 break;
2094 case w83627uhg:
2095 data->pwm_num = 2;
2096 break;
2097 }
2098
2099 /* Default to 3 temperature inputs, code below will adjust as needed */
2100 data->have_temp = 0x07;
2101
2102 /* Deal with temperature register setup first. */
2103 if (sio_data->kind == nct6775 || sio_data->kind == nct6776) {
2104 int mask = 0;
2105
2106 /*
2107 * Display temperature sensor output only if it monitors
2108 * a source other than one already reported. Always display
2109 * first three temperature registers, though.
2110 */
2111 for (i = 0; i < NUM_REG_TEMP; i++) {
2112 u8 src;
2113
2114 data->reg_temp[i] = NCT6775_REG_TEMP[i];
2115 data->reg_temp_over[i] = NCT6775_REG_TEMP_OVER[i];
2116 data->reg_temp_hyst[i] = NCT6775_REG_TEMP_HYST[i];
2117 data->reg_temp_config[i] = NCT6775_REG_TEMP_CONFIG[i];
2118
2119 src = w83627ehf_read_value(data,
2120 NCT6775_REG_TEMP_SOURCE[i]);
2121 src &= 0x1f;
2122 if (src && !(mask & (1 << src))) {
2123 data->have_temp |= 1 << i;
2124 mask |= 1 << src;
2125 }
2126
2127 data->temp_src[i] = src;
2128
2129 /*
2130 * Now do some register swapping if index 0..2 don't
2131 * point to SYSTIN(1), CPUIN(2), and AUXIN(3).
2132 * Idea is to have the first three attributes
2133 * report SYSTIN, CPUIN, and AUXIN if possible
2134 * without overriding the basic system configuration.
2135 */
2136 if (i > 0 && data->temp_src[0] != 1
2137 && data->temp_src[i] == 1)
2138 w82627ehf_swap_tempreg(data, 0, i);
2139 if (i > 1 && data->temp_src[1] != 2
2140 && data->temp_src[i] == 2)
2141 w82627ehf_swap_tempreg(data, 1, i);
2142 if (i > 2 && data->temp_src[2] != 3
2143 && data->temp_src[i] == 3)
2144 w82627ehf_swap_tempreg(data, 2, i);
2145 }
2146 if (sio_data->kind == nct6776) {
2147 /*
2148 * On NCT6776, AUXTIN and VIN3 pins are shared.
2149 * Only way to detect it is to check if AUXTIN is used
2150 * as a temperature source, and if that source is
2151 * enabled.
2152 *
2153 * If that is the case, disable in6, which reports VIN3.
2154 * Otherwise disable temp3.
2155 */
2156 if (data->temp_src[2] == 3) {
2157 u8 reg;
2158
2159 if (data->reg_temp_config[2])
2160 reg = w83627ehf_read_value(data,
2161 data->reg_temp_config[2]);
2162 else
2163 reg = 0; /* Assume AUXTIN is used */
2164
2165 if (reg & 0x01)
2166 data->have_temp &= ~(1 << 2);
2167 else
2168 data->in6_skip = 1;
2169 }
2170 data->temp_label = nct6776_temp_label;
2171 } else {
2172 data->temp_label = nct6775_temp_label;
2173 }
2174 data->have_temp_offset = data->have_temp & 0x07;
2175 for (i = 0; i < 3; i++) {
2176 if (data->temp_src[i] > 3)
2177 data->have_temp_offset &= ~(1 << i);
2178 }
2179 } else if (sio_data->kind == w83667hg_b) {
2180 u8 reg;
2181
2182 w83627ehf_set_temp_reg_ehf(data, 4);
2183
2184 /*
2185 * Temperature sources are selected with bank 0, registers 0x49
2186 * and 0x4a.
2187 */
2188 reg = w83627ehf_read_value(data, 0x4a);
2189 data->temp_src[0] = reg >> 5;
2190 reg = w83627ehf_read_value(data, 0x49);
2191 data->temp_src[1] = reg & 0x07;
2192 data->temp_src[2] = (reg >> 4) & 0x07;
2193
2194 /*
2195 * W83667HG-B has another temperature register at 0x7e.
2196 * The temperature source is selected with register 0x7d.
2197 * Support it if the source differs from already reported
2198 * sources.
2199 */
2200 reg = w83627ehf_read_value(data, 0x7d);
2201 reg &= 0x07;
2202 if (reg != data->temp_src[0] && reg != data->temp_src[1]
2203 && reg != data->temp_src[2]) {
2204 data->temp_src[3] = reg;
2205 data->have_temp |= 1 << 3;
2206 }
2207
2208 /*
2209 * Chip supports either AUXTIN or VIN3. Try to find out which
2210 * one.
2211 */
2212 reg = w83627ehf_read_value(data, W83627EHF_REG_TEMP_CONFIG[2]);
2213 if (data->temp_src[2] == 2 && (reg & 0x01))
2214 data->have_temp &= ~(1 << 2);
2215
2216 if ((data->temp_src[2] == 2 && (data->have_temp & (1 << 2)))
2217 || (data->temp_src[3] == 2 && (data->have_temp & (1 << 3))))
2218 data->in6_skip = 1;
2219
2220 data->temp_label = w83667hg_b_temp_label;
2221 data->have_temp_offset = data->have_temp & 0x07;
2222 for (i = 0; i < 3; i++) {
2223 if (data->temp_src[i] > 2)
2224 data->have_temp_offset &= ~(1 << i);
2225 }
2226 } else if (sio_data->kind == w83627uhg) {
2227 u8 reg;
2228
2229 w83627ehf_set_temp_reg_ehf(data, 3);
2230
2231 /*
2232 * Temperature sources for temp2 and temp3 are selected with
2233 * bank 0, registers 0x49 and 0x4a.
2234 */
2235 data->temp_src[0] = 0; /* SYSTIN */
2236 reg = w83627ehf_read_value(data, 0x49) & 0x07;
2237 /* Adjust to have the same mapping as other source registers */
2238 if (reg == 0)
2239 data->temp_src[1] = 1;
2240 else if (reg >= 2 && reg <= 5)
2241 data->temp_src[1] = reg + 2;
2242 else /* should never happen */
2243 data->have_temp &= ~(1 << 1);
2244 reg = w83627ehf_read_value(data, 0x4a);
2245 data->temp_src[2] = reg >> 5;
2246
2247 /*
2248 * Skip temp3 if source is invalid or the same as temp1
2249 * or temp2.
2250 */
2251 if (data->temp_src[2] == 2 || data->temp_src[2] == 3 ||
2252 data->temp_src[2] == data->temp_src[0] ||
2253 ((data->have_temp & (1 << 1)) &&
2254 data->temp_src[2] == data->temp_src[1]))
2255 data->have_temp &= ~(1 << 2);
2256 else
2257 data->temp3_val_only = 1; /* No limit regs */
2258
2259 data->in6_skip = 1; /* No VIN3 */
2260
2261 data->temp_label = w83667hg_b_temp_label;
2262 data->have_temp_offset = data->have_temp & 0x03;
2263 for (i = 0; i < 3; i++) {
2264 if (data->temp_src[i] > 1)
2265 data->have_temp_offset &= ~(1 << i);
2266 }
2267 } else {
2268 w83627ehf_set_temp_reg_ehf(data, 3);
2269
2270 /* Temperature sources are fixed */
2271
2272 if (sio_data->kind == w83667hg) {
2273 u8 reg;
2274
2275 /*
2276 * Chip supports either AUXTIN or VIN3. Try to find
2277 * out which one.
2278 */
2279 reg = w83627ehf_read_value(data,
2280 W83627EHF_REG_TEMP_CONFIG[2]);
2281 if (reg & 0x01)
2282 data->have_temp &= ~(1 << 2);
2283 else
2284 data->in6_skip = 1;
2285 }
2286 data->have_temp_offset = data->have_temp & 0x07;
2287 }
2288
2289 if (sio_data->kind == nct6775) {
2290 data->has_fan_div = true;
2291 data->fan_from_reg = fan_from_reg16;
2292 data->fan_from_reg_min = fan_from_reg8;
2293 data->REG_PWM = NCT6775_REG_PWM;
2294 data->REG_TARGET = NCT6775_REG_TARGET;
2295 data->REG_FAN = NCT6775_REG_FAN;
2296 data->REG_FAN_MIN = W83627EHF_REG_FAN_MIN;
2297 data->REG_FAN_START_OUTPUT = NCT6775_REG_FAN_START_OUTPUT;
2298 data->REG_FAN_STOP_OUTPUT = NCT6775_REG_FAN_STOP_OUTPUT;
2299 data->REG_FAN_STOP_TIME = NCT6775_REG_FAN_STOP_TIME;
2300 data->REG_FAN_MAX_OUTPUT = NCT6775_REG_FAN_MAX_OUTPUT;
2301 data->REG_FAN_STEP_OUTPUT = NCT6775_REG_FAN_STEP_OUTPUT;
2302 } else if (sio_data->kind == nct6776) {
2303 data->has_fan_div = false;
2304 data->fan_from_reg = fan_from_reg13;
2305 data->fan_from_reg_min = fan_from_reg13;
2306 data->REG_PWM = NCT6775_REG_PWM;
2307 data->REG_TARGET = NCT6775_REG_TARGET;
2308 data->REG_FAN = NCT6775_REG_FAN;
2309 data->REG_FAN_MIN = NCT6776_REG_FAN_MIN;
2310 data->REG_FAN_START_OUTPUT = NCT6775_REG_FAN_START_OUTPUT;
2311 data->REG_FAN_STOP_OUTPUT = NCT6775_REG_FAN_STOP_OUTPUT;
2312 data->REG_FAN_STOP_TIME = NCT6775_REG_FAN_STOP_TIME;
2313 } else if (sio_data->kind == w83667hg_b) {
2314 data->has_fan_div = true;
2315 data->fan_from_reg = fan_from_reg8;
2316 data->fan_from_reg_min = fan_from_reg8;
2317 data->REG_PWM = W83627EHF_REG_PWM;
2318 data->REG_TARGET = W83627EHF_REG_TARGET;
2319 data->REG_FAN = W83627EHF_REG_FAN;
2320 data->REG_FAN_MIN = W83627EHF_REG_FAN_MIN;
2321 data->REG_FAN_START_OUTPUT = W83627EHF_REG_FAN_START_OUTPUT;
2322 data->REG_FAN_STOP_OUTPUT = W83627EHF_REG_FAN_STOP_OUTPUT;
2323 data->REG_FAN_STOP_TIME = W83627EHF_REG_FAN_STOP_TIME;
2324 data->REG_FAN_MAX_OUTPUT =
2325 W83627EHF_REG_FAN_MAX_OUTPUT_W83667_B;
2326 data->REG_FAN_STEP_OUTPUT =
2327 W83627EHF_REG_FAN_STEP_OUTPUT_W83667_B;
2328 } else {
2329 data->has_fan_div = true;
2330 data->fan_from_reg = fan_from_reg8;
2331 data->fan_from_reg_min = fan_from_reg8;
2332 data->REG_PWM = W83627EHF_REG_PWM;
2333 data->REG_TARGET = W83627EHF_REG_TARGET;
2334 data->REG_FAN = W83627EHF_REG_FAN;
2335 data->REG_FAN_MIN = W83627EHF_REG_FAN_MIN;
2336 data->REG_FAN_START_OUTPUT = W83627EHF_REG_FAN_START_OUTPUT;
2337 data->REG_FAN_STOP_OUTPUT = W83627EHF_REG_FAN_STOP_OUTPUT;
2338 data->REG_FAN_STOP_TIME = W83627EHF_REG_FAN_STOP_TIME;
2339 data->REG_FAN_MAX_OUTPUT =
2340 W83627EHF_REG_FAN_MAX_OUTPUT_COMMON;
2341 data->REG_FAN_STEP_OUTPUT =
2342 W83627EHF_REG_FAN_STEP_OUTPUT_COMMON;
2343 }
2344
2345 /* Setup input voltage scaling factors */
2346 if (sio_data->kind == w83627uhg)
2347 data->scale_in = scale_in_w83627uhg;
2348 else
2349 data->scale_in = scale_in_common;
2350
2351 /* Initialize the chip */
2352 w83627ehf_init_device(data, sio_data->kind);
2353
2354 data->vrm = vid_which_vrm();
2355 superio_enter(sio_data->sioreg);
2356 /* Read VID value */
2357 if (sio_data->kind == w83667hg || sio_data->kind == w83667hg_b ||
2358 sio_data->kind == nct6775 || sio_data->kind == nct6776) {
2359 /*
2360 * W83667HG has different pins for VID input and output, so
2361 * we can get the VID input values directly at logical device D
2362 * 0xe3.
2363 */
2364 superio_select(sio_data->sioreg, W83667HG_LD_VID);
2365 data->vid = superio_inb(sio_data->sioreg, 0xe3);
2366 err = device_create_file(dev, &dev_attr_cpu0_vid);
2367 if (err)
2368 goto exit_release;
2369 } else if (sio_data->kind != w83627uhg) {
2370 superio_select(sio_data->sioreg, W83627EHF_LD_HWM);
2371 if (superio_inb(sio_data->sioreg, SIO_REG_VID_CTRL) & 0x80) {
2372 /*
2373 * Set VID input sensibility if needed. In theory the
2374 * BIOS should have set it, but in practice it's not
2375 * always the case. We only do it for the W83627EHF/EHG
2376 * because the W83627DHG is more complex in this
2377 * respect.
2378 */
2379 if (sio_data->kind == w83627ehf) {
2380 en_vrm10 = superio_inb(sio_data->sioreg,
2381 SIO_REG_EN_VRM10);
2382 if ((en_vrm10 & 0x08) && data->vrm == 90) {
2383 dev_warn(dev,
2384 "Setting VID input voltage to TTL\n");
2385 superio_outb(sio_data->sioreg,
2386 SIO_REG_EN_VRM10,
2387 en_vrm10 & ~0x08);
2388 } else if (!(en_vrm10 & 0x08)
2389 && data->vrm == 100) {
2390 dev_warn(dev,
2391 "Setting VID input voltage to VRM10\n");
2392 superio_outb(sio_data->sioreg,
2393 SIO_REG_EN_VRM10,
2394 en_vrm10 | 0x08);
2395 }
2396 }
2397
2398 data->vid = superio_inb(sio_data->sioreg,
2399 SIO_REG_VID_DATA);
2400 if (sio_data->kind == w83627ehf) /* 6 VID pins only */
2401 data->vid &= 0x3f;
2402
2403 err = device_create_file(dev, &dev_attr_cpu0_vid);
2404 if (err)
2405 goto exit_release;
2406 } else {
2407 dev_info(dev,
2408 "VID pins in output mode, CPU VID not available\n");
2409 }
2410 }
2411
2412 if (fan_debounce &&
2413 (sio_data->kind == nct6775 || sio_data->kind == nct6776)) {
2414 u8 tmp;
2415
2416 superio_select(sio_data->sioreg, W83627EHF_LD_HWM);
2417 tmp = superio_inb(sio_data->sioreg, NCT6775_REG_FAN_DEBOUNCE);
2418 if (sio_data->kind == nct6776)
2419 superio_outb(sio_data->sioreg, NCT6775_REG_FAN_DEBOUNCE,
2420 0x3e | tmp);
2421 else
2422 superio_outb(sio_data->sioreg, NCT6775_REG_FAN_DEBOUNCE,
2423 0x1e | tmp);
2424 pr_info("Enabled fan debounce for chip %s\n", data->name);
2425 }
2426
2427 superio_exit(sio_data->sioreg);
2428
2429 w83627ehf_check_fan_inputs(sio_data, data);
2430
2431 /* Read fan clock dividers immediately */
2432 w83627ehf_update_fan_div_common(dev, data);
2433
2434 /* Read pwm data to save original values */
2435 w83627ehf_update_pwm_common(dev, data);
2436 for (i = 0; i < data->pwm_num; i++)
2437 data->pwm_enable_orig[i] = data->pwm_enable[i];
2438
2439 /* Register sysfs hooks */
2440 for (i = 0; i < ARRAY_SIZE(sda_sf3_arrays); i++) {
2441 err = device_create_file(dev, &sda_sf3_arrays[i].dev_attr);
2442 if (err)
2443 goto exit_remove;
2444 }
2445
2446 for (i = 0; i < ARRAY_SIZE(sda_sf3_max_step_arrays); i++) {
2447 struct sensor_device_attribute *attr =
2448 &sda_sf3_max_step_arrays[i];
2449 if (data->REG_FAN_STEP_OUTPUT &&
2450 data->REG_FAN_STEP_OUTPUT[attr->index] != 0xff) {
2451 err = device_create_file(dev, &attr->dev_attr);
2452 if (err)
2453 goto exit_remove;
2454 }
2455 }
2456 /* if fan3 and fan4 are enabled create the sf3 files for them */
2457 if ((data->has_fan & (1 << 2)) && data->pwm_num >= 3)
2458 for (i = 0; i < ARRAY_SIZE(sda_sf3_arrays_fan3); i++) {
2459 err = device_create_file(dev,
2460 &sda_sf3_arrays_fan3[i].dev_attr);
2461 if (err)
2462 goto exit_remove;
2463 }
2464 if ((data->has_fan & (1 << 3)) && data->pwm_num >= 4)
2465 for (i = 0; i < ARRAY_SIZE(sda_sf3_arrays_fan4); i++) {
2466 err = device_create_file(dev,
2467 &sda_sf3_arrays_fan4[i].dev_attr);
2468 if (err)
2469 goto exit_remove;
2470 }
2471
2472 for (i = 0; i < data->in_num; i++) {
2473 if ((i == 6) && data->in6_skip)
2474 continue;
2475 if ((err = device_create_file(dev, &sda_in_input[i].dev_attr))
2476 || (err = device_create_file(dev,
2477 &sda_in_alarm[i].dev_attr))
2478 || (err = device_create_file(dev,
2479 &sda_in_min[i].dev_attr))
2480 || (err = device_create_file(dev,
2481 &sda_in_max[i].dev_attr)))
2482 goto exit_remove;
2483 }
2484
2485 for (i = 0; i < 5; i++) {
2486 if (data->has_fan & (1 << i)) {
2487 if ((err = device_create_file(dev,
2488 &sda_fan_input[i].dev_attr))
2489 || (err = device_create_file(dev,
2490 &sda_fan_alarm[i].dev_attr)))
2491 goto exit_remove;
2492 if (sio_data->kind != nct6776) {
2493 err = device_create_file(dev,
2494 &sda_fan_div[i].dev_attr);
2495 if (err)
2496 goto exit_remove;
2497 }
2498 if (data->has_fan_min & (1 << i)) {
2499 err = device_create_file(dev,
2500 &sda_fan_min[i].dev_attr);
2501 if (err)
2502 goto exit_remove;
2503 }
2504 if (i < data->pwm_num &&
2505 ((err = device_create_file(dev,
2506 &sda_pwm[i].dev_attr))
2507 || (err = device_create_file(dev,
2508 &sda_pwm_mode[i].dev_attr))
2509 || (err = device_create_file(dev,
2510 &sda_pwm_enable[i].dev_attr))
2511 || (err = device_create_file(dev,
2512 &sda_target_temp[i].dev_attr))
2513 || (err = device_create_file(dev,
2514 &sda_tolerance[i].dev_attr))))
2515 goto exit_remove;
2516 }
2517 }
2518
2519 for (i = 0; i < NUM_REG_TEMP; i++) {
2520 if (!(data->have_temp & (1 << i)))
2521 continue;
2522 err = device_create_file(dev, &sda_temp_input[i].dev_attr);
2523 if (err)
2524 goto exit_remove;
2525 if (data->temp_label) {
2526 err = device_create_file(dev,
2527 &sda_temp_label[i].dev_attr);
2528 if (err)
2529 goto exit_remove;
2530 }
2531 if (i == 2 && data->temp3_val_only)
2532 continue;
2533 if (data->reg_temp_over[i]) {
2534 err = device_create_file(dev,
2535 &sda_temp_max[i].dev_attr);
2536 if (err)
2537 goto exit_remove;
2538 }
2539 if (data->reg_temp_hyst[i]) {
2540 err = device_create_file(dev,
2541 &sda_temp_max_hyst[i].dev_attr);
2542 if (err)
2543 goto exit_remove;
2544 }
2545 if (i > 2)
2546 continue;
2547 if ((err = device_create_file(dev,
2548 &sda_temp_alarm[i].dev_attr))
2549 || (err = device_create_file(dev,
2550 &sda_temp_type[i].dev_attr)))
2551 goto exit_remove;
2552 if (data->have_temp_offset & (1 << i)) {
2553 err = device_create_file(dev,
2554 &sda_temp_offset[i].dev_attr);
2555 if (err)
2556 goto exit_remove;
2557 }
2558 }
2559
2560 err = device_create_file(dev, &sda_caseopen[0].dev_attr);
2561 if (err)
2562 goto exit_remove;
2563
2564 if (sio_data->kind == nct6776) {
2565 err = device_create_file(dev, &sda_caseopen[1].dev_attr);
2566 if (err)
2567 goto exit_remove;
2568 }
2569
2570 err = device_create_file(dev, &dev_attr_name);
2571 if (err)
2572 goto exit_remove;
2573
2574 data->hwmon_dev = hwmon_device_register(dev);
2575 if (IS_ERR(data->hwmon_dev)) {
2576 err = PTR_ERR(data->hwmon_dev);
2577 goto exit_remove;
2578 }
2579
2580 return 0;
2581
2582 exit_remove:
2583 w83627ehf_device_remove_files(dev);
2584 exit_release:
2585 release_region(res->start, IOREGION_LENGTH);
2586 exit:
2587 return err;
2588 }
2589
2590 static int w83627ehf_remove(struct platform_device *pdev)
2591 {
2592 struct w83627ehf_data *data = platform_get_drvdata(pdev);
2593
2594 hwmon_device_unregister(data->hwmon_dev);
2595 w83627ehf_device_remove_files(&pdev->dev);
2596 release_region(data->addr, IOREGION_LENGTH);
2597
2598 return 0;
2599 }
2600
2601 #ifdef CONFIG_PM
2602 static int w83627ehf_suspend(struct device *dev)
2603 {
2604 struct w83627ehf_data *data = w83627ehf_update_device(dev);
2605 struct w83627ehf_sio_data *sio_data = dev_get_platdata(dev);
2606
2607 mutex_lock(&data->update_lock);
2608 data->vbat = w83627ehf_read_value(data, W83627EHF_REG_VBAT);
2609 if (sio_data->kind == nct6775) {
2610 data->fandiv1 = w83627ehf_read_value(data, NCT6775_REG_FANDIV1);
2611 data->fandiv2 = w83627ehf_read_value(data, NCT6775_REG_FANDIV2);
2612 }
2613 mutex_unlock(&data->update_lock);
2614
2615 return 0;
2616 }
2617
2618 static int w83627ehf_resume(struct device *dev)
2619 {
2620 struct w83627ehf_data *data = dev_get_drvdata(dev);
2621 struct w83627ehf_sio_data *sio_data = dev_get_platdata(dev);
2622 int i;
2623
2624 mutex_lock(&data->update_lock);
2625 data->bank = 0xff; /* Force initial bank selection */
2626
2627 /* Restore limits */
2628 for (i = 0; i < data->in_num; i++) {
2629 if ((i == 6) && data->in6_skip)
2630 continue;
2631
2632 w83627ehf_write_value(data, W83627EHF_REG_IN_MIN(i),
2633 data->in_min[i]);
2634 w83627ehf_write_value(data, W83627EHF_REG_IN_MAX(i),
2635 data->in_max[i]);
2636 }
2637
2638 for (i = 0; i < 5; i++) {
2639 if (!(data->has_fan_min & (1 << i)))
2640 continue;
2641
2642 w83627ehf_write_value(data, data->REG_FAN_MIN[i],
2643 data->fan_min[i]);
2644 }
2645
2646 for (i = 0; i < NUM_REG_TEMP; i++) {
2647 if (!(data->have_temp & (1 << i)))
2648 continue;
2649
2650 if (data->reg_temp_over[i])
2651 w83627ehf_write_temp(data, data->reg_temp_over[i],
2652 data->temp_max[i]);
2653 if (data->reg_temp_hyst[i])
2654 w83627ehf_write_temp(data, data->reg_temp_hyst[i],
2655 data->temp_max_hyst[i]);
2656 if (i > 2)
2657 continue;
2658 if (data->have_temp_offset & (1 << i))
2659 w83627ehf_write_value(data,
2660 W83627EHF_REG_TEMP_OFFSET[i],
2661 data->temp_offset[i]);
2662 }
2663
2664 /* Restore other settings */
2665 w83627ehf_write_value(data, W83627EHF_REG_VBAT, data->vbat);
2666 if (sio_data->kind == nct6775) {
2667 w83627ehf_write_value(data, NCT6775_REG_FANDIV1, data->fandiv1);
2668 w83627ehf_write_value(data, NCT6775_REG_FANDIV2, data->fandiv2);
2669 }
2670
2671 /* Force re-reading all values */
2672 data->valid = 0;
2673 mutex_unlock(&data->update_lock);
2674
2675 return 0;
2676 }
2677
2678 static const struct dev_pm_ops w83627ehf_dev_pm_ops = {
2679 .suspend = w83627ehf_suspend,
2680 .resume = w83627ehf_resume,
2681 .freeze = w83627ehf_suspend,
2682 .restore = w83627ehf_resume,
2683 };
2684
2685 #define W83627EHF_DEV_PM_OPS (&w83627ehf_dev_pm_ops)
2686 #else
2687 #define W83627EHF_DEV_PM_OPS NULL
2688 #endif /* CONFIG_PM */
2689
2690 static struct platform_driver w83627ehf_driver = {
2691 .driver = {
2692 .name = DRVNAME,
2693 .pm = W83627EHF_DEV_PM_OPS,
2694 },
2695 .probe = w83627ehf_probe,
2696 .remove = w83627ehf_remove,
2697 };
2698
2699 /* w83627ehf_find() looks for a '627 in the Super-I/O config space */
2700 static int __init w83627ehf_find(int sioaddr, unsigned short *addr,
2701 struct w83627ehf_sio_data *sio_data)
2702 {
2703 static const char sio_name_W83627EHF[] __initconst = "W83627EHF";
2704 static const char sio_name_W83627EHG[] __initconst = "W83627EHG";
2705 static const char sio_name_W83627DHG[] __initconst = "W83627DHG";
2706 static const char sio_name_W83627DHG_P[] __initconst = "W83627DHG-P";
2707 static const char sio_name_W83627UHG[] __initconst = "W83627UHG";
2708 static const char sio_name_W83667HG[] __initconst = "W83667HG";
2709 static const char sio_name_W83667HG_B[] __initconst = "W83667HG-B";
2710 static const char sio_name_NCT6775[] __initconst = "NCT6775F";
2711 static const char sio_name_NCT6776[] __initconst = "NCT6776F";
2712
2713 u16 val;
2714 const char *sio_name;
2715
2716 superio_enter(sioaddr);
2717
2718 if (force_id)
2719 val = force_id;
2720 else
2721 val = (superio_inb(sioaddr, SIO_REG_DEVID) << 8)
2722 | superio_inb(sioaddr, SIO_REG_DEVID + 1);
2723 switch (val & SIO_ID_MASK) {
2724 case SIO_W83627EHF_ID:
2725 sio_data->kind = w83627ehf;
2726 sio_name = sio_name_W83627EHF;
2727 break;
2728 case SIO_W83627EHG_ID:
2729 sio_data->kind = w83627ehf;
2730 sio_name = sio_name_W83627EHG;
2731 break;
2732 case SIO_W83627DHG_ID:
2733 sio_data->kind = w83627dhg;
2734 sio_name = sio_name_W83627DHG;
2735 break;
2736 case SIO_W83627DHG_P_ID:
2737 sio_data->kind = w83627dhg_p;
2738 sio_name = sio_name_W83627DHG_P;
2739 break;
2740 case SIO_W83627UHG_ID:
2741 sio_data->kind = w83627uhg;
2742 sio_name = sio_name_W83627UHG;
2743 break;
2744 case SIO_W83667HG_ID:
2745 sio_data->kind = w83667hg;
2746 sio_name = sio_name_W83667HG;
2747 break;
2748 case SIO_W83667HG_B_ID:
2749 sio_data->kind = w83667hg_b;
2750 sio_name = sio_name_W83667HG_B;
2751 break;
2752 case SIO_NCT6775_ID:
2753 sio_data->kind = nct6775;
2754 sio_name = sio_name_NCT6775;
2755 break;
2756 case SIO_NCT6776_ID:
2757 sio_data->kind = nct6776;
2758 sio_name = sio_name_NCT6776;
2759 break;
2760 default:
2761 if (val != 0xffff)
2762 pr_debug("unsupported chip ID: 0x%04x\n", val);
2763 superio_exit(sioaddr);
2764 return -ENODEV;
2765 }
2766
2767 /* We have a known chip, find the HWM I/O address */
2768 superio_select(sioaddr, W83627EHF_LD_HWM);
2769 val = (superio_inb(sioaddr, SIO_REG_ADDR) << 8)
2770 | superio_inb(sioaddr, SIO_REG_ADDR + 1);
2771 *addr = val & IOREGION_ALIGNMENT;
2772 if (*addr == 0) {
2773 pr_err("Refusing to enable a Super-I/O device with a base I/O port 0\n");
2774 superio_exit(sioaddr);
2775 return -ENODEV;
2776 }
2777
2778 /* Activate logical device if needed */
2779 val = superio_inb(sioaddr, SIO_REG_ENABLE);
2780 if (!(val & 0x01)) {
2781 pr_warn("Forcibly enabling Super-I/O. Sensor is probably unusable.\n");
2782 superio_outb(sioaddr, SIO_REG_ENABLE, val | 0x01);
2783 }
2784
2785 superio_exit(sioaddr);
2786 pr_info("Found %s chip at %#x\n", sio_name, *addr);
2787 sio_data->sioreg = sioaddr;
2788
2789 return 0;
2790 }
2791
2792 /*
2793 * when Super-I/O functions move to a separate file, the Super-I/O
2794 * bus will manage the lifetime of the device and this module will only keep
2795 * track of the w83627ehf driver. But since we platform_device_alloc(), we
2796 * must keep track of the device
2797 */
2798 static struct platform_device *pdev;
2799
2800 static int __init sensors_w83627ehf_init(void)
2801 {
2802 int err;
2803 unsigned short address;
2804 struct resource res;
2805 struct w83627ehf_sio_data sio_data;
2806
2807 /*
2808 * initialize sio_data->kind and sio_data->sioreg.
2809 *
2810 * when Super-I/O functions move to a separate file, the Super-I/O
2811 * driver will probe 0x2e and 0x4e and auto-detect the presence of a
2812 * w83627ehf hardware monitor, and call probe()
2813 */
2814 if (w83627ehf_find(0x2e, &address, &sio_data) &&
2815 w83627ehf_find(0x4e, &address, &sio_data))
2816 return -ENODEV;
2817
2818 err = platform_driver_register(&w83627ehf_driver);
2819 if (err)
2820 goto exit;
2821
2822 pdev = platform_device_alloc(DRVNAME, address);
2823 if (!pdev) {
2824 err = -ENOMEM;
2825 pr_err("Device allocation failed\n");
2826 goto exit_unregister;
2827 }
2828
2829 err = platform_device_add_data(pdev, &sio_data,
2830 sizeof(struct w83627ehf_sio_data));
2831 if (err) {
2832 pr_err("Platform data allocation failed\n");
2833 goto exit_device_put;
2834 }
2835
2836 memset(&res, 0, sizeof(res));
2837 res.name = DRVNAME;
2838 res.start = address + IOREGION_OFFSET;
2839 res.end = address + IOREGION_OFFSET + IOREGION_LENGTH - 1;
2840 res.flags = IORESOURCE_IO;
2841
2842 err = acpi_check_resource_conflict(&res);
2843 if (err)
2844 goto exit_device_put;
2845
2846 err = platform_device_add_resources(pdev, &res, 1);
2847 if (err) {
2848 pr_err("Device resource addition failed (%d)\n", err);
2849 goto exit_device_put;
2850 }
2851
2852 /* platform_device_add calls probe() */
2853 err = platform_device_add(pdev);
2854 if (err) {
2855 pr_err("Device addition failed (%d)\n", err);
2856 goto exit_device_put;
2857 }
2858
2859 return 0;
2860
2861 exit_device_put:
2862 platform_device_put(pdev);
2863 exit_unregister:
2864 platform_driver_unregister(&w83627ehf_driver);
2865 exit:
2866 return err;
2867 }
2868
2869 static void __exit sensors_w83627ehf_exit(void)
2870 {
2871 platform_device_unregister(pdev);
2872 platform_driver_unregister(&w83627ehf_driver);
2873 }
2874
2875 MODULE_AUTHOR("Jean Delvare <jdelvare@suse.de>");
2876 MODULE_DESCRIPTION("W83627EHF driver");
2877 MODULE_LICENSE("GPL");
2878
2879 module_init(sensors_w83627ehf_init);
2880 module_exit(sensors_w83627ehf_exit);
Linux kernel - Deliverables
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