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Merge tag 'nfs-for-4.13-1' of git://git.linux-nfs.org/projects/anna/linux-nfs
[mirror_ubuntu-artful-kernel.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 int
139 superio_enter(int ioreg)
140 {
141 if (!request_muxed_region(ioreg, 2, DRVNAME))
142 return -EBUSY;
143
144 outb(0x87, ioreg);
145 outb(0x87, ioreg);
146
147 return 0;
148 }
149
150 static inline void
151 superio_exit(int ioreg)
152 {
153 outb(0xaa, ioreg);
154 outb(0x02, ioreg);
155 outb(0x02, ioreg + 1);
156 release_region(ioreg, 2);
157 }
158
159 /*
160 * ISA constants
161 */
162
163 #define IOREGION_ALIGNMENT (~7)
164 #define IOREGION_OFFSET 5
165 #define IOREGION_LENGTH 2
166 #define ADDR_REG_OFFSET 0
167 #define DATA_REG_OFFSET 1
168
169 #define W83627EHF_REG_BANK 0x4E
170 #define W83627EHF_REG_CONFIG 0x40
171
172 /*
173 * Not currently used:
174 * REG_MAN_ID has the value 0x5ca3 for all supported chips.
175 * REG_CHIP_ID == 0x88/0xa1/0xc1 depending on chip model.
176 * REG_MAN_ID is at port 0x4f
177 * REG_CHIP_ID is at port 0x58
178 */
179
180 static const u16 W83627EHF_REG_FAN[] = { 0x28, 0x29, 0x2a, 0x3f, 0x553 };
181 static const u16 W83627EHF_REG_FAN_MIN[] = { 0x3b, 0x3c, 0x3d, 0x3e, 0x55c };
182
183 /* The W83627EHF registers for nr=7,8,9 are in bank 5 */
184 #define W83627EHF_REG_IN_MAX(nr) ((nr < 7) ? (0x2b + (nr) * 2) : \
185 (0x554 + (((nr) - 7) * 2)))
186 #define W83627EHF_REG_IN_MIN(nr) ((nr < 7) ? (0x2c + (nr) * 2) : \
187 (0x555 + (((nr) - 7) * 2)))
188 #define W83627EHF_REG_IN(nr) ((nr < 7) ? (0x20 + (nr)) : \
189 (0x550 + (nr) - 7))
190
191 static const u16 W83627EHF_REG_TEMP[] = { 0x27, 0x150, 0x250, 0x7e };
192 static const u16 W83627EHF_REG_TEMP_HYST[] = { 0x3a, 0x153, 0x253, 0 };
193 static const u16 W83627EHF_REG_TEMP_OVER[] = { 0x39, 0x155, 0x255, 0 };
194 static const u16 W83627EHF_REG_TEMP_CONFIG[] = { 0, 0x152, 0x252, 0 };
195
196 /* Fan clock dividers are spread over the following five registers */
197 #define W83627EHF_REG_FANDIV1 0x47
198 #define W83627EHF_REG_FANDIV2 0x4B
199 #define W83627EHF_REG_VBAT 0x5D
200 #define W83627EHF_REG_DIODE 0x59
201 #define W83627EHF_REG_SMI_OVT 0x4C
202
203 /* NCT6775F has its own fan divider registers */
204 #define NCT6775_REG_FANDIV1 0x506
205 #define NCT6775_REG_FANDIV2 0x507
206 #define NCT6775_REG_FAN_DEBOUNCE 0xf0
207
208 #define W83627EHF_REG_ALARM1 0x459
209 #define W83627EHF_REG_ALARM2 0x45A
210 #define W83627EHF_REG_ALARM3 0x45B
211
212 #define W83627EHF_REG_CASEOPEN_DET 0x42 /* SMI STATUS #2 */
213 #define W83627EHF_REG_CASEOPEN_CLR 0x46 /* SMI MASK #3 */
214
215 /* SmartFan registers */
216 #define W83627EHF_REG_FAN_STEPUP_TIME 0x0f
217 #define W83627EHF_REG_FAN_STEPDOWN_TIME 0x0e
218
219 /* DC or PWM output fan configuration */
220 static const u8 W83627EHF_REG_PWM_ENABLE[] = {
221 0x04, /* SYS FAN0 output mode and PWM mode */
222 0x04, /* CPU FAN0 output mode and PWM mode */
223 0x12, /* AUX FAN mode */
224 0x62, /* CPU FAN1 mode */
225 };
226
227 static const u8 W83627EHF_PWM_MODE_SHIFT[] = { 0, 1, 0, 6 };
228 static const u8 W83627EHF_PWM_ENABLE_SHIFT[] = { 2, 4, 1, 4 };
229
230 /* FAN Duty Cycle, be used to control */
231 static const u16 W83627EHF_REG_PWM[] = { 0x01, 0x03, 0x11, 0x61 };
232 static const u16 W83627EHF_REG_TARGET[] = { 0x05, 0x06, 0x13, 0x63 };
233 static const u8 W83627EHF_REG_TOLERANCE[] = { 0x07, 0x07, 0x14, 0x62 };
234
235 /* Advanced Fan control, some values are common for all fans */
236 static const u16 W83627EHF_REG_FAN_START_OUTPUT[] = { 0x0a, 0x0b, 0x16, 0x65 };
237 static const u16 W83627EHF_REG_FAN_STOP_OUTPUT[] = { 0x08, 0x09, 0x15, 0x64 };
238 static const u16 W83627EHF_REG_FAN_STOP_TIME[] = { 0x0c, 0x0d, 0x17, 0x66 };
239
240 static const u16 W83627EHF_REG_FAN_MAX_OUTPUT_COMMON[]
241 = { 0xff, 0x67, 0xff, 0x69 };
242 static const u16 W83627EHF_REG_FAN_STEP_OUTPUT_COMMON[]
243 = { 0xff, 0x68, 0xff, 0x6a };
244
245 static const u16 W83627EHF_REG_FAN_MAX_OUTPUT_W83667_B[] = { 0x67, 0x69, 0x6b };
246 static const u16 W83627EHF_REG_FAN_STEP_OUTPUT_W83667_B[]
247 = { 0x68, 0x6a, 0x6c };
248
249 static const u16 W83627EHF_REG_TEMP_OFFSET[] = { 0x454, 0x455, 0x456 };
250
251 static const u16 NCT6775_REG_TARGET[] = { 0x101, 0x201, 0x301 };
252 static const u16 NCT6775_REG_FAN_MODE[] = { 0x102, 0x202, 0x302 };
253 static const u16 NCT6775_REG_FAN_STOP_OUTPUT[] = { 0x105, 0x205, 0x305 };
254 static const u16 NCT6775_REG_FAN_START_OUTPUT[] = { 0x106, 0x206, 0x306 };
255 static const u16 NCT6775_REG_FAN_STOP_TIME[] = { 0x107, 0x207, 0x307 };
256 static const u16 NCT6775_REG_PWM[] = { 0x109, 0x209, 0x309 };
257 static const u16 NCT6775_REG_FAN_MAX_OUTPUT[] = { 0x10a, 0x20a, 0x30a };
258 static const u16 NCT6775_REG_FAN_STEP_OUTPUT[] = { 0x10b, 0x20b, 0x30b };
259 static const u16 NCT6775_REG_FAN[] = { 0x630, 0x632, 0x634, 0x636, 0x638 };
260 static const u16 NCT6776_REG_FAN_MIN[] = { 0x63a, 0x63c, 0x63e, 0x640, 0x642};
261
262 static const u16 NCT6775_REG_TEMP[]
263 = { 0x27, 0x150, 0x250, 0x73, 0x75, 0x77, 0x62b, 0x62c, 0x62d };
264 static const u16 NCT6775_REG_TEMP_CONFIG[]
265 = { 0, 0x152, 0x252, 0, 0, 0, 0x628, 0x629, 0x62A };
266 static const u16 NCT6775_REG_TEMP_HYST[]
267 = { 0x3a, 0x153, 0x253, 0, 0, 0, 0x673, 0x678, 0x67D };
268 static const u16 NCT6775_REG_TEMP_OVER[]
269 = { 0x39, 0x155, 0x255, 0, 0, 0, 0x672, 0x677, 0x67C };
270 static const u16 NCT6775_REG_TEMP_SOURCE[]
271 = { 0x621, 0x622, 0x623, 0x100, 0x200, 0x300, 0x624, 0x625, 0x626 };
272
273 static const char *const w83667hg_b_temp_label[] = {
274 "SYSTIN",
275 "CPUTIN",
276 "AUXTIN",
277 "AMDTSI",
278 "PECI Agent 1",
279 "PECI Agent 2",
280 "PECI Agent 3",
281 "PECI Agent 4"
282 };
283
284 static const char *const nct6775_temp_label[] = {
285 "",
286 "SYSTIN",
287 "CPUTIN",
288 "AUXTIN",
289 "AMD SB-TSI",
290 "PECI Agent 0",
291 "PECI Agent 1",
292 "PECI Agent 2",
293 "PECI Agent 3",
294 "PECI Agent 4",
295 "PECI Agent 5",
296 "PECI Agent 6",
297 "PECI Agent 7",
298 "PCH_CHIP_CPU_MAX_TEMP",
299 "PCH_CHIP_TEMP",
300 "PCH_CPU_TEMP",
301 "PCH_MCH_TEMP",
302 "PCH_DIM0_TEMP",
303 "PCH_DIM1_TEMP",
304 "PCH_DIM2_TEMP",
305 "PCH_DIM3_TEMP"
306 };
307
308 static const char *const nct6776_temp_label[] = {
309 "",
310 "SYSTIN",
311 "CPUTIN",
312 "AUXTIN",
313 "SMBUSMASTER 0",
314 "SMBUSMASTER 1",
315 "SMBUSMASTER 2",
316 "SMBUSMASTER 3",
317 "SMBUSMASTER 4",
318 "SMBUSMASTER 5",
319 "SMBUSMASTER 6",
320 "SMBUSMASTER 7",
321 "PECI Agent 0",
322 "PECI Agent 1",
323 "PCH_CHIP_CPU_MAX_TEMP",
324 "PCH_CHIP_TEMP",
325 "PCH_CPU_TEMP",
326 "PCH_MCH_TEMP",
327 "PCH_DIM0_TEMP",
328 "PCH_DIM1_TEMP",
329 "PCH_DIM2_TEMP",
330 "PCH_DIM3_TEMP",
331 "BYTE_TEMP"
332 };
333
334 #define NUM_REG_TEMP ARRAY_SIZE(NCT6775_REG_TEMP)
335
336 static int is_word_sized(u16 reg)
337 {
338 return ((((reg & 0xff00) == 0x100
339 || (reg & 0xff00) == 0x200)
340 && ((reg & 0x00ff) == 0x50
341 || (reg & 0x00ff) == 0x53
342 || (reg & 0x00ff) == 0x55))
343 || (reg & 0xfff0) == 0x630
344 || reg == 0x640 || reg == 0x642
345 || ((reg & 0xfff0) == 0x650
346 && (reg & 0x000f) >= 0x06)
347 || reg == 0x73 || reg == 0x75 || reg == 0x77
348 );
349 }
350
351 /*
352 * Conversions
353 */
354
355 /* 1 is PWM mode, output in ms */
356 static inline unsigned int step_time_from_reg(u8 reg, u8 mode)
357 {
358 return mode ? 100 * reg : 400 * reg;
359 }
360
361 static inline u8 step_time_to_reg(unsigned int msec, u8 mode)
362 {
363 return clamp_val((mode ? (msec + 50) / 100 : (msec + 200) / 400),
364 1, 255);
365 }
366
367 static unsigned int fan_from_reg8(u16 reg, unsigned int divreg)
368 {
369 if (reg == 0 || reg == 255)
370 return 0;
371 return 1350000U / (reg << divreg);
372 }
373
374 static unsigned int fan_from_reg13(u16 reg, unsigned int divreg)
375 {
376 if ((reg & 0xff1f) == 0xff1f)
377 return 0;
378
379 reg = (reg & 0x1f) | ((reg & 0xff00) >> 3);
380
381 if (reg == 0)
382 return 0;
383
384 return 1350000U / reg;
385 }
386
387 static unsigned int fan_from_reg16(u16 reg, unsigned int divreg)
388 {
389 if (reg == 0 || reg == 0xffff)
390 return 0;
391
392 /*
393 * Even though the registers are 16 bit wide, the fan divisor
394 * still applies.
395 */
396 return 1350000U / (reg << divreg);
397 }
398
399 static inline unsigned int
400 div_from_reg(u8 reg)
401 {
402 return 1 << reg;
403 }
404
405 /*
406 * Some of the voltage inputs have internal scaling, the tables below
407 * contain 8 (the ADC LSB in mV) * scaling factor * 100
408 */
409 static const u16 scale_in_common[10] = {
410 800, 800, 1600, 1600, 800, 800, 800, 1600, 1600, 800
411 };
412 static const u16 scale_in_w83627uhg[9] = {
413 800, 800, 3328, 3424, 800, 800, 0, 3328, 3400
414 };
415
416 static inline long in_from_reg(u8 reg, u8 nr, const u16 *scale_in)
417 {
418 return DIV_ROUND_CLOSEST(reg * scale_in[nr], 100);
419 }
420
421 static inline u8 in_to_reg(u32 val, u8 nr, const u16 *scale_in)
422 {
423 return clamp_val(DIV_ROUND_CLOSEST(val * 100, scale_in[nr]), 0, 255);
424 }
425
426 /*
427 * Data structures and manipulation thereof
428 */
429
430 struct w83627ehf_data {
431 int addr; /* IO base of hw monitor block */
432 const char *name;
433
434 struct device *hwmon_dev;
435 struct mutex lock;
436
437 u16 reg_temp[NUM_REG_TEMP];
438 u16 reg_temp_over[NUM_REG_TEMP];
439 u16 reg_temp_hyst[NUM_REG_TEMP];
440 u16 reg_temp_config[NUM_REG_TEMP];
441 u8 temp_src[NUM_REG_TEMP];
442 const char * const *temp_label;
443
444 const u16 *REG_PWM;
445 const u16 *REG_TARGET;
446 const u16 *REG_FAN;
447 const u16 *REG_FAN_MIN;
448 const u16 *REG_FAN_START_OUTPUT;
449 const u16 *REG_FAN_STOP_OUTPUT;
450 const u16 *REG_FAN_STOP_TIME;
451 const u16 *REG_FAN_MAX_OUTPUT;
452 const u16 *REG_FAN_STEP_OUTPUT;
453 const u16 *scale_in;
454
455 unsigned int (*fan_from_reg)(u16 reg, unsigned int divreg);
456 unsigned int (*fan_from_reg_min)(u16 reg, unsigned int divreg);
457
458 struct mutex update_lock;
459 char valid; /* !=0 if following fields are valid */
460 unsigned long last_updated; /* In jiffies */
461
462 /* Register values */
463 u8 bank; /* current register bank */
464 u8 in_num; /* number of in inputs we have */
465 u8 in[10]; /* Register value */
466 u8 in_max[10]; /* Register value */
467 u8 in_min[10]; /* Register value */
468 unsigned int rpm[5];
469 u16 fan_min[5];
470 u8 fan_div[5];
471 u8 has_fan; /* some fan inputs can be disabled */
472 u8 has_fan_min; /* some fans don't have min register */
473 bool has_fan_div;
474 u8 temp_type[3];
475 s8 temp_offset[3];
476 s16 temp[9];
477 s16 temp_max[9];
478 s16 temp_max_hyst[9];
479 u32 alarms;
480 u8 caseopen;
481
482 u8 pwm_mode[4]; /* 0->DC variable voltage, 1->PWM variable duty cycle */
483 u8 pwm_enable[4]; /* 1->manual
484 * 2->thermal cruise mode (also called SmartFan I)
485 * 3->fan speed cruise mode
486 * 4->variable thermal cruise (also called
487 * SmartFan III)
488 * 5->enhanced variable thermal cruise (also called
489 * SmartFan IV)
490 */
491 u8 pwm_enable_orig[4]; /* original value of pwm_enable */
492 u8 pwm_num; /* number of pwm */
493 u8 pwm[4];
494 u8 target_temp[4];
495 u8 tolerance[4];
496
497 u8 fan_start_output[4]; /* minimum fan speed when spinning up */
498 u8 fan_stop_output[4]; /* minimum fan speed when spinning down */
499 u8 fan_stop_time[4]; /* time at minimum before disabling fan */
500 u8 fan_max_output[4]; /* maximum fan speed */
501 u8 fan_step_output[4]; /* rate of change output value */
502
503 u8 vid;
504 u8 vrm;
505
506 u16 have_temp;
507 u16 have_temp_offset;
508 u8 in6_skip:1;
509 u8 temp3_val_only:1;
510
511 #ifdef CONFIG_PM
512 /* Remember extra register values over suspend/resume */
513 u8 vbat;
514 u8 fandiv1;
515 u8 fandiv2;
516 #endif
517 };
518
519 struct w83627ehf_sio_data {
520 int sioreg;
521 enum kinds kind;
522 };
523
524 /*
525 * On older chips, only registers 0x50-0x5f are banked.
526 * On more recent chips, all registers are banked.
527 * Assume that is the case and set the bank number for each access.
528 * Cache the bank number so it only needs to be set if it changes.
529 */
530 static inline void w83627ehf_set_bank(struct w83627ehf_data *data, u16 reg)
531 {
532 u8 bank = reg >> 8;
533 if (data->bank != bank) {
534 outb_p(W83627EHF_REG_BANK, data->addr + ADDR_REG_OFFSET);
535 outb_p(bank, data->addr + DATA_REG_OFFSET);
536 data->bank = bank;
537 }
538 }
539
540 static u16 w83627ehf_read_value(struct w83627ehf_data *data, u16 reg)
541 {
542 int res, word_sized = is_word_sized(reg);
543
544 mutex_lock(&data->lock);
545
546 w83627ehf_set_bank(data, reg);
547 outb_p(reg & 0xff, data->addr + ADDR_REG_OFFSET);
548 res = inb_p(data->addr + DATA_REG_OFFSET);
549 if (word_sized) {
550 outb_p((reg & 0xff) + 1,
551 data->addr + ADDR_REG_OFFSET);
552 res = (res << 8) + inb_p(data->addr + DATA_REG_OFFSET);
553 }
554
555 mutex_unlock(&data->lock);
556 return res;
557 }
558
559 static int w83627ehf_write_value(struct w83627ehf_data *data, u16 reg,
560 u16 value)
561 {
562 int word_sized = is_word_sized(reg);
563
564 mutex_lock(&data->lock);
565
566 w83627ehf_set_bank(data, reg);
567 outb_p(reg & 0xff, data->addr + ADDR_REG_OFFSET);
568 if (word_sized) {
569 outb_p(value >> 8, data->addr + DATA_REG_OFFSET);
570 outb_p((reg & 0xff) + 1,
571 data->addr + ADDR_REG_OFFSET);
572 }
573 outb_p(value & 0xff, data->addr + DATA_REG_OFFSET);
574
575 mutex_unlock(&data->lock);
576 return 0;
577 }
578
579 /* We left-align 8-bit temperature values to make the code simpler */
580 static u16 w83627ehf_read_temp(struct w83627ehf_data *data, u16 reg)
581 {
582 u16 res;
583
584 res = w83627ehf_read_value(data, reg);
585 if (!is_word_sized(reg))
586 res <<= 8;
587
588 return res;
589 }
590
591 static int w83627ehf_write_temp(struct w83627ehf_data *data, u16 reg,
592 u16 value)
593 {
594 if (!is_word_sized(reg))
595 value >>= 8;
596 return w83627ehf_write_value(data, reg, value);
597 }
598
599 /* This function assumes that the caller holds data->update_lock */
600 static void nct6775_write_fan_div(struct w83627ehf_data *data, int nr)
601 {
602 u8 reg;
603
604 switch (nr) {
605 case 0:
606 reg = (w83627ehf_read_value(data, NCT6775_REG_FANDIV1) & 0x70)
607 | (data->fan_div[0] & 0x7);
608 w83627ehf_write_value(data, NCT6775_REG_FANDIV1, reg);
609 break;
610 case 1:
611 reg = (w83627ehf_read_value(data, NCT6775_REG_FANDIV1) & 0x7)
612 | ((data->fan_div[1] << 4) & 0x70);
613 w83627ehf_write_value(data, NCT6775_REG_FANDIV1, reg);
614 break;
615 case 2:
616 reg = (w83627ehf_read_value(data, NCT6775_REG_FANDIV2) & 0x70)
617 | (data->fan_div[2] & 0x7);
618 w83627ehf_write_value(data, NCT6775_REG_FANDIV2, reg);
619 break;
620 case 3:
621 reg = (w83627ehf_read_value(data, NCT6775_REG_FANDIV2) & 0x7)
622 | ((data->fan_div[3] << 4) & 0x70);
623 w83627ehf_write_value(data, NCT6775_REG_FANDIV2, reg);
624 break;
625 }
626 }
627
628 /* This function assumes that the caller holds data->update_lock */
629 static void w83627ehf_write_fan_div(struct w83627ehf_data *data, int nr)
630 {
631 u8 reg;
632
633 switch (nr) {
634 case 0:
635 reg = (w83627ehf_read_value(data, W83627EHF_REG_FANDIV1) & 0xcf)
636 | ((data->fan_div[0] & 0x03) << 4);
637 /* fan5 input control bit is write only, compute the value */
638 reg |= (data->has_fan & (1 << 4)) ? 1 : 0;
639 w83627ehf_write_value(data, W83627EHF_REG_FANDIV1, reg);
640 reg = (w83627ehf_read_value(data, W83627EHF_REG_VBAT) & 0xdf)
641 | ((data->fan_div[0] & 0x04) << 3);
642 w83627ehf_write_value(data, W83627EHF_REG_VBAT, reg);
643 break;
644 case 1:
645 reg = (w83627ehf_read_value(data, W83627EHF_REG_FANDIV1) & 0x3f)
646 | ((data->fan_div[1] & 0x03) << 6);
647 /* fan5 input control bit is write only, compute the value */
648 reg |= (data->has_fan & (1 << 4)) ? 1 : 0;
649 w83627ehf_write_value(data, W83627EHF_REG_FANDIV1, reg);
650 reg = (w83627ehf_read_value(data, W83627EHF_REG_VBAT) & 0xbf)
651 | ((data->fan_div[1] & 0x04) << 4);
652 w83627ehf_write_value(data, W83627EHF_REG_VBAT, reg);
653 break;
654 case 2:
655 reg = (w83627ehf_read_value(data, W83627EHF_REG_FANDIV2) & 0x3f)
656 | ((data->fan_div[2] & 0x03) << 6);
657 w83627ehf_write_value(data, W83627EHF_REG_FANDIV2, reg);
658 reg = (w83627ehf_read_value(data, W83627EHF_REG_VBAT) & 0x7f)
659 | ((data->fan_div[2] & 0x04) << 5);
660 w83627ehf_write_value(data, W83627EHF_REG_VBAT, reg);
661 break;
662 case 3:
663 reg = (w83627ehf_read_value(data, W83627EHF_REG_DIODE) & 0xfc)
664 | (data->fan_div[3] & 0x03);
665 w83627ehf_write_value(data, W83627EHF_REG_DIODE, reg);
666 reg = (w83627ehf_read_value(data, W83627EHF_REG_SMI_OVT) & 0x7f)
667 | ((data->fan_div[3] & 0x04) << 5);
668 w83627ehf_write_value(data, W83627EHF_REG_SMI_OVT, reg);
669 break;
670 case 4:
671 reg = (w83627ehf_read_value(data, W83627EHF_REG_DIODE) & 0x73)
672 | ((data->fan_div[4] & 0x03) << 2)
673 | ((data->fan_div[4] & 0x04) << 5);
674 w83627ehf_write_value(data, W83627EHF_REG_DIODE, reg);
675 break;
676 }
677 }
678
679 static void w83627ehf_write_fan_div_common(struct device *dev,
680 struct w83627ehf_data *data, int nr)
681 {
682 struct w83627ehf_sio_data *sio_data = dev_get_platdata(dev);
683
684 if (sio_data->kind == nct6776)
685 ; /* no dividers, do nothing */
686 else if (sio_data->kind == nct6775)
687 nct6775_write_fan_div(data, nr);
688 else
689 w83627ehf_write_fan_div(data, nr);
690 }
691
692 static void nct6775_update_fan_div(struct w83627ehf_data *data)
693 {
694 u8 i;
695
696 i = w83627ehf_read_value(data, NCT6775_REG_FANDIV1);
697 data->fan_div[0] = i & 0x7;
698 data->fan_div[1] = (i & 0x70) >> 4;
699 i = w83627ehf_read_value(data, NCT6775_REG_FANDIV2);
700 data->fan_div[2] = i & 0x7;
701 if (data->has_fan & (1<<3))
702 data->fan_div[3] = (i & 0x70) >> 4;
703 }
704
705 static void w83627ehf_update_fan_div(struct w83627ehf_data *data)
706 {
707 int i;
708
709 i = w83627ehf_read_value(data, W83627EHF_REG_FANDIV1);
710 data->fan_div[0] = (i >> 4) & 0x03;
711 data->fan_div[1] = (i >> 6) & 0x03;
712 i = w83627ehf_read_value(data, W83627EHF_REG_FANDIV2);
713 data->fan_div[2] = (i >> 6) & 0x03;
714 i = w83627ehf_read_value(data, W83627EHF_REG_VBAT);
715 data->fan_div[0] |= (i >> 3) & 0x04;
716 data->fan_div[1] |= (i >> 4) & 0x04;
717 data->fan_div[2] |= (i >> 5) & 0x04;
718 if (data->has_fan & ((1 << 3) | (1 << 4))) {
719 i = w83627ehf_read_value(data, W83627EHF_REG_DIODE);
720 data->fan_div[3] = i & 0x03;
721 data->fan_div[4] = ((i >> 2) & 0x03)
722 | ((i >> 5) & 0x04);
723 }
724 if (data->has_fan & (1 << 3)) {
725 i = w83627ehf_read_value(data, W83627EHF_REG_SMI_OVT);
726 data->fan_div[3] |= (i >> 5) & 0x04;
727 }
728 }
729
730 static void w83627ehf_update_fan_div_common(struct device *dev,
731 struct w83627ehf_data *data)
732 {
733 struct w83627ehf_sio_data *sio_data = dev_get_platdata(dev);
734
735 if (sio_data->kind == nct6776)
736 ; /* no dividers, do nothing */
737 else if (sio_data->kind == nct6775)
738 nct6775_update_fan_div(data);
739 else
740 w83627ehf_update_fan_div(data);
741 }
742
743 static void nct6775_update_pwm(struct w83627ehf_data *data)
744 {
745 int i;
746 int pwmcfg, fanmodecfg;
747
748 for (i = 0; i < data->pwm_num; i++) {
749 pwmcfg = w83627ehf_read_value(data,
750 W83627EHF_REG_PWM_ENABLE[i]);
751 fanmodecfg = w83627ehf_read_value(data,
752 NCT6775_REG_FAN_MODE[i]);
753 data->pwm_mode[i] =
754 ((pwmcfg >> W83627EHF_PWM_MODE_SHIFT[i]) & 1) ? 0 : 1;
755 data->pwm_enable[i] = ((fanmodecfg >> 4) & 7) + 1;
756 data->tolerance[i] = fanmodecfg & 0x0f;
757 data->pwm[i] = w83627ehf_read_value(data, data->REG_PWM[i]);
758 }
759 }
760
761 static void w83627ehf_update_pwm(struct w83627ehf_data *data)
762 {
763 int i;
764 int pwmcfg = 0, tolerance = 0; /* shut up the compiler */
765
766 for (i = 0; i < data->pwm_num; i++) {
767 if (!(data->has_fan & (1 << i)))
768 continue;
769
770 /* pwmcfg, tolerance mapped for i=0, i=1 to same reg */
771 if (i != 1) {
772 pwmcfg = w83627ehf_read_value(data,
773 W83627EHF_REG_PWM_ENABLE[i]);
774 tolerance = w83627ehf_read_value(data,
775 W83627EHF_REG_TOLERANCE[i]);
776 }
777 data->pwm_mode[i] =
778 ((pwmcfg >> W83627EHF_PWM_MODE_SHIFT[i]) & 1) ? 0 : 1;
779 data->pwm_enable[i] = ((pwmcfg >> W83627EHF_PWM_ENABLE_SHIFT[i])
780 & 3) + 1;
781 data->pwm[i] = w83627ehf_read_value(data, data->REG_PWM[i]);
782
783 data->tolerance[i] = (tolerance >> (i == 1 ? 4 : 0)) & 0x0f;
784 }
785 }
786
787 static void w83627ehf_update_pwm_common(struct device *dev,
788 struct w83627ehf_data *data)
789 {
790 struct w83627ehf_sio_data *sio_data = dev_get_platdata(dev);
791
792 if (sio_data->kind == nct6775 || sio_data->kind == nct6776)
793 nct6775_update_pwm(data);
794 else
795 w83627ehf_update_pwm(data);
796 }
797
798 static struct w83627ehf_data *w83627ehf_update_device(struct device *dev)
799 {
800 struct w83627ehf_data *data = dev_get_drvdata(dev);
801 struct w83627ehf_sio_data *sio_data = dev_get_platdata(dev);
802
803 int i;
804
805 mutex_lock(&data->update_lock);
806
807 if (time_after(jiffies, data->last_updated + HZ + HZ/2)
808 || !data->valid) {
809 /* Fan clock dividers */
810 w83627ehf_update_fan_div_common(dev, data);
811
812 /* Measured voltages and limits */
813 for (i = 0; i < data->in_num; i++) {
814 if ((i == 6) && data->in6_skip)
815 continue;
816
817 data->in[i] = w83627ehf_read_value(data,
818 W83627EHF_REG_IN(i));
819 data->in_min[i] = w83627ehf_read_value(data,
820 W83627EHF_REG_IN_MIN(i));
821 data->in_max[i] = w83627ehf_read_value(data,
822 W83627EHF_REG_IN_MAX(i));
823 }
824
825 /* Measured fan speeds and limits */
826 for (i = 0; i < 5; i++) {
827 u16 reg;
828
829 if (!(data->has_fan & (1 << i)))
830 continue;
831
832 reg = w83627ehf_read_value(data, data->REG_FAN[i]);
833 data->rpm[i] = data->fan_from_reg(reg,
834 data->fan_div[i]);
835
836 if (data->has_fan_min & (1 << i))
837 data->fan_min[i] = w83627ehf_read_value(data,
838 data->REG_FAN_MIN[i]);
839
840 /*
841 * If we failed to measure the fan speed and clock
842 * divider can be increased, let's try that for next
843 * time
844 */
845 if (data->has_fan_div
846 && (reg >= 0xff || (sio_data->kind == nct6775
847 && reg == 0x00))
848 && data->fan_div[i] < 0x07) {
849 dev_dbg(dev,
850 "Increasing fan%d clock divider from %u to %u\n",
851 i + 1, div_from_reg(data->fan_div[i]),
852 div_from_reg(data->fan_div[i] + 1));
853 data->fan_div[i]++;
854 w83627ehf_write_fan_div_common(dev, data, i);
855 /* Preserve min limit if possible */
856 if ((data->has_fan_min & (1 << i))
857 && data->fan_min[i] >= 2
858 && data->fan_min[i] != 255)
859 w83627ehf_write_value(data,
860 data->REG_FAN_MIN[i],
861 (data->fan_min[i] /= 2));
862 }
863 }
864
865 w83627ehf_update_pwm_common(dev, data);
866
867 for (i = 0; i < data->pwm_num; i++) {
868 if (!(data->has_fan & (1 << i)))
869 continue;
870
871 data->fan_start_output[i] =
872 w83627ehf_read_value(data,
873 data->REG_FAN_START_OUTPUT[i]);
874 data->fan_stop_output[i] =
875 w83627ehf_read_value(data,
876 data->REG_FAN_STOP_OUTPUT[i]);
877 data->fan_stop_time[i] =
878 w83627ehf_read_value(data,
879 data->REG_FAN_STOP_TIME[i]);
880
881 if (data->REG_FAN_MAX_OUTPUT &&
882 data->REG_FAN_MAX_OUTPUT[i] != 0xff)
883 data->fan_max_output[i] =
884 w83627ehf_read_value(data,
885 data->REG_FAN_MAX_OUTPUT[i]);
886
887 if (data->REG_FAN_STEP_OUTPUT &&
888 data->REG_FAN_STEP_OUTPUT[i] != 0xff)
889 data->fan_step_output[i] =
890 w83627ehf_read_value(data,
891 data->REG_FAN_STEP_OUTPUT[i]);
892
893 data->target_temp[i] =
894 w83627ehf_read_value(data,
895 data->REG_TARGET[i]) &
896 (data->pwm_mode[i] == 1 ? 0x7f : 0xff);
897 }
898
899 /* Measured temperatures and limits */
900 for (i = 0; i < NUM_REG_TEMP; i++) {
901 if (!(data->have_temp & (1 << i)))
902 continue;
903 data->temp[i] = w83627ehf_read_temp(data,
904 data->reg_temp[i]);
905 if (data->reg_temp_over[i])
906 data->temp_max[i]
907 = w83627ehf_read_temp(data,
908 data->reg_temp_over[i]);
909 if (data->reg_temp_hyst[i])
910 data->temp_max_hyst[i]
911 = w83627ehf_read_temp(data,
912 data->reg_temp_hyst[i]);
913 if (i > 2)
914 continue;
915 if (data->have_temp_offset & (1 << i))
916 data->temp_offset[i]
917 = w83627ehf_read_value(data,
918 W83627EHF_REG_TEMP_OFFSET[i]);
919 }
920
921 data->alarms = w83627ehf_read_value(data,
922 W83627EHF_REG_ALARM1) |
923 (w83627ehf_read_value(data,
924 W83627EHF_REG_ALARM2) << 8) |
925 (w83627ehf_read_value(data,
926 W83627EHF_REG_ALARM3) << 16);
927
928 data->caseopen = w83627ehf_read_value(data,
929 W83627EHF_REG_CASEOPEN_DET);
930
931 data->last_updated = jiffies;
932 data->valid = 1;
933 }
934
935 mutex_unlock(&data->update_lock);
936 return data;
937 }
938
939 /*
940 * Sysfs callback functions
941 */
942 #define show_in_reg(reg) \
943 static ssize_t \
944 show_##reg(struct device *dev, struct device_attribute *attr, \
945 char *buf) \
946 { \
947 struct w83627ehf_data *data = w83627ehf_update_device(dev); \
948 struct sensor_device_attribute *sensor_attr = \
949 to_sensor_dev_attr(attr); \
950 int nr = sensor_attr->index; \
951 return sprintf(buf, "%ld\n", in_from_reg(data->reg[nr], nr, \
952 data->scale_in)); \
953 }
954 show_in_reg(in)
955 show_in_reg(in_min)
956 show_in_reg(in_max)
957
958 #define store_in_reg(REG, reg) \
959 static ssize_t \
960 store_in_##reg(struct device *dev, struct device_attribute *attr, \
961 const char *buf, size_t count) \
962 { \
963 struct w83627ehf_data *data = dev_get_drvdata(dev); \
964 struct sensor_device_attribute *sensor_attr = \
965 to_sensor_dev_attr(attr); \
966 int nr = sensor_attr->index; \
967 unsigned long val; \
968 int err; \
969 err = kstrtoul(buf, 10, &val); \
970 if (err < 0) \
971 return err; \
972 mutex_lock(&data->update_lock); \
973 data->in_##reg[nr] = in_to_reg(val, nr, data->scale_in); \
974 w83627ehf_write_value(data, W83627EHF_REG_IN_##REG(nr), \
975 data->in_##reg[nr]); \
976 mutex_unlock(&data->update_lock); \
977 return count; \
978 }
979
980 store_in_reg(MIN, min)
981 store_in_reg(MAX, max)
982
983 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
984 char *buf)
985 {
986 struct w83627ehf_data *data = w83627ehf_update_device(dev);
987 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
988 int nr = sensor_attr->index;
989 return sprintf(buf, "%u\n", (data->alarms >> nr) & 0x01);
990 }
991
992 static struct sensor_device_attribute sda_in_input[] = {
993 SENSOR_ATTR(in0_input, S_IRUGO, show_in, NULL, 0),
994 SENSOR_ATTR(in1_input, S_IRUGO, show_in, NULL, 1),
995 SENSOR_ATTR(in2_input, S_IRUGO, show_in, NULL, 2),
996 SENSOR_ATTR(in3_input, S_IRUGO, show_in, NULL, 3),
997 SENSOR_ATTR(in4_input, S_IRUGO, show_in, NULL, 4),
998 SENSOR_ATTR(in5_input, S_IRUGO, show_in, NULL, 5),
999 SENSOR_ATTR(in6_input, S_IRUGO, show_in, NULL, 6),
1000 SENSOR_ATTR(in7_input, S_IRUGO, show_in, NULL, 7),
1001 SENSOR_ATTR(in8_input, S_IRUGO, show_in, NULL, 8),
1002 SENSOR_ATTR(in9_input, S_IRUGO, show_in, NULL, 9),
1003 };
1004
1005 static struct sensor_device_attribute sda_in_alarm[] = {
1006 SENSOR_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0),
1007 SENSOR_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1),
1008 SENSOR_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2),
1009 SENSOR_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3),
1010 SENSOR_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8),
1011 SENSOR_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 21),
1012 SENSOR_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 20),
1013 SENSOR_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 16),
1014 SENSOR_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 17),
1015 SENSOR_ATTR(in9_alarm, S_IRUGO, show_alarm, NULL, 19),
1016 };
1017
1018 static struct sensor_device_attribute sda_in_min[] = {
1019 SENSOR_ATTR(in0_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 0),
1020 SENSOR_ATTR(in1_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 1),
1021 SENSOR_ATTR(in2_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 2),
1022 SENSOR_ATTR(in3_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 3),
1023 SENSOR_ATTR(in4_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 4),
1024 SENSOR_ATTR(in5_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 5),
1025 SENSOR_ATTR(in6_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 6),
1026 SENSOR_ATTR(in7_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 7),
1027 SENSOR_ATTR(in8_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 8),
1028 SENSOR_ATTR(in9_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 9),
1029 };
1030
1031 static struct sensor_device_attribute sda_in_max[] = {
1032 SENSOR_ATTR(in0_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 0),
1033 SENSOR_ATTR(in1_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 1),
1034 SENSOR_ATTR(in2_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 2),
1035 SENSOR_ATTR(in3_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 3),
1036 SENSOR_ATTR(in4_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 4),
1037 SENSOR_ATTR(in5_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 5),
1038 SENSOR_ATTR(in6_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 6),
1039 SENSOR_ATTR(in7_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 7),
1040 SENSOR_ATTR(in8_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 8),
1041 SENSOR_ATTR(in9_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 9),
1042 };
1043
1044 static ssize_t
1045 show_fan(struct device *dev, struct device_attribute *attr, char *buf)
1046 {
1047 struct w83627ehf_data *data = w83627ehf_update_device(dev);
1048 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1049 int nr = sensor_attr->index;
1050 return sprintf(buf, "%d\n", data->rpm[nr]);
1051 }
1052
1053 static ssize_t
1054 show_fan_min(struct device *dev, struct device_attribute *attr, char *buf)
1055 {
1056 struct w83627ehf_data *data = w83627ehf_update_device(dev);
1057 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1058 int nr = sensor_attr->index;
1059 return sprintf(buf, "%d\n",
1060 data->fan_from_reg_min(data->fan_min[nr],
1061 data->fan_div[nr]));
1062 }
1063
1064 static ssize_t
1065 show_fan_div(struct device *dev, struct device_attribute *attr,
1066 char *buf)
1067 {
1068 struct w83627ehf_data *data = w83627ehf_update_device(dev);
1069 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1070 int nr = sensor_attr->index;
1071 return sprintf(buf, "%u\n", div_from_reg(data->fan_div[nr]));
1072 }
1073
1074 static ssize_t
1075 store_fan_min(struct device *dev, struct device_attribute *attr,
1076 const char *buf, size_t count)
1077 {
1078 struct w83627ehf_data *data = dev_get_drvdata(dev);
1079 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1080 int nr = sensor_attr->index;
1081 unsigned long val;
1082 int err;
1083 unsigned int reg;
1084 u8 new_div;
1085
1086 err = kstrtoul(buf, 10, &val);
1087 if (err < 0)
1088 return err;
1089
1090 mutex_lock(&data->update_lock);
1091 if (!data->has_fan_div) {
1092 /*
1093 * Only NCT6776F for now, so we know that this is a 13 bit
1094 * register
1095 */
1096 if (!val) {
1097 val = 0xff1f;
1098 } else {
1099 if (val > 1350000U)
1100 val = 135000U;
1101 val = 1350000U / val;
1102 val = (val & 0x1f) | ((val << 3) & 0xff00);
1103 }
1104 data->fan_min[nr] = val;
1105 goto done; /* Leave fan divider alone */
1106 }
1107 if (!val) {
1108 /* No min limit, alarm disabled */
1109 data->fan_min[nr] = 255;
1110 new_div = data->fan_div[nr]; /* No change */
1111 dev_info(dev, "fan%u low limit and alarm disabled\n", nr + 1);
1112 } else if ((reg = 1350000U / val) >= 128 * 255) {
1113 /*
1114 * Speed below this value cannot possibly be represented,
1115 * even with the highest divider (128)
1116 */
1117 data->fan_min[nr] = 254;
1118 new_div = 7; /* 128 == (1 << 7) */
1119 dev_warn(dev,
1120 "fan%u low limit %lu below minimum %u, set to minimum\n",
1121 nr + 1, val, data->fan_from_reg_min(254, 7));
1122 } else if (!reg) {
1123 /*
1124 * Speed above this value cannot possibly be represented,
1125 * even with the lowest divider (1)
1126 */
1127 data->fan_min[nr] = 1;
1128 new_div = 0; /* 1 == (1 << 0) */
1129 dev_warn(dev,
1130 "fan%u low limit %lu above maximum %u, set to maximum\n",
1131 nr + 1, val, data->fan_from_reg_min(1, 0));
1132 } else {
1133 /*
1134 * Automatically pick the best divider, i.e. the one such
1135 * that the min limit will correspond to a register value
1136 * in the 96..192 range
1137 */
1138 new_div = 0;
1139 while (reg > 192 && new_div < 7) {
1140 reg >>= 1;
1141 new_div++;
1142 }
1143 data->fan_min[nr] = reg;
1144 }
1145
1146 /*
1147 * Write both the fan clock divider (if it changed) and the new
1148 * fan min (unconditionally)
1149 */
1150 if (new_div != data->fan_div[nr]) {
1151 dev_dbg(dev, "fan%u clock divider changed from %u to %u\n",
1152 nr + 1, div_from_reg(data->fan_div[nr]),
1153 div_from_reg(new_div));
1154 data->fan_div[nr] = new_div;
1155 w83627ehf_write_fan_div_common(dev, data, nr);
1156 /* Give the chip time to sample a new speed value */
1157 data->last_updated = jiffies;
1158 }
1159 done:
1160 w83627ehf_write_value(data, data->REG_FAN_MIN[nr],
1161 data->fan_min[nr]);
1162 mutex_unlock(&data->update_lock);
1163
1164 return count;
1165 }
1166
1167 static struct sensor_device_attribute sda_fan_input[] = {
1168 SENSOR_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0),
1169 SENSOR_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1),
1170 SENSOR_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2),
1171 SENSOR_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3),
1172 SENSOR_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 4),
1173 };
1174
1175 static struct sensor_device_attribute sda_fan_alarm[] = {
1176 SENSOR_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6),
1177 SENSOR_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7),
1178 SENSOR_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 11),
1179 SENSOR_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 10),
1180 SENSOR_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 23),
1181 };
1182
1183 static struct sensor_device_attribute sda_fan_min[] = {
1184 SENSOR_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan_min,
1185 store_fan_min, 0),
1186 SENSOR_ATTR(fan2_min, S_IWUSR | S_IRUGO, show_fan_min,
1187 store_fan_min, 1),
1188 SENSOR_ATTR(fan3_min, S_IWUSR | S_IRUGO, show_fan_min,
1189 store_fan_min, 2),
1190 SENSOR_ATTR(fan4_min, S_IWUSR | S_IRUGO, show_fan_min,
1191 store_fan_min, 3),
1192 SENSOR_ATTR(fan5_min, S_IWUSR | S_IRUGO, show_fan_min,
1193 store_fan_min, 4),
1194 };
1195
1196 static struct sensor_device_attribute sda_fan_div[] = {
1197 SENSOR_ATTR(fan1_div, S_IRUGO, show_fan_div, NULL, 0),
1198 SENSOR_ATTR(fan2_div, S_IRUGO, show_fan_div, NULL, 1),
1199 SENSOR_ATTR(fan3_div, S_IRUGO, show_fan_div, NULL, 2),
1200 SENSOR_ATTR(fan4_div, S_IRUGO, show_fan_div, NULL, 3),
1201 SENSOR_ATTR(fan5_div, S_IRUGO, show_fan_div, NULL, 4),
1202 };
1203
1204 static ssize_t
1205 show_temp_label(struct device *dev, struct device_attribute *attr, char *buf)
1206 {
1207 struct w83627ehf_data *data = w83627ehf_update_device(dev);
1208 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1209 int nr = sensor_attr->index;
1210 return sprintf(buf, "%s\n", data->temp_label[data->temp_src[nr]]);
1211 }
1212
1213 #define show_temp_reg(addr, reg) \
1214 static ssize_t \
1215 show_##reg(struct device *dev, struct device_attribute *attr, \
1216 char *buf) \
1217 { \
1218 struct w83627ehf_data *data = w83627ehf_update_device(dev); \
1219 struct sensor_device_attribute *sensor_attr = \
1220 to_sensor_dev_attr(attr); \
1221 int nr = sensor_attr->index; \
1222 return sprintf(buf, "%d\n", LM75_TEMP_FROM_REG(data->reg[nr])); \
1223 }
1224 show_temp_reg(reg_temp, temp);
1225 show_temp_reg(reg_temp_over, temp_max);
1226 show_temp_reg(reg_temp_hyst, temp_max_hyst);
1227
1228 #define store_temp_reg(addr, reg) \
1229 static ssize_t \
1230 store_##reg(struct device *dev, struct device_attribute *attr, \
1231 const char *buf, size_t count) \
1232 { \
1233 struct w83627ehf_data *data = dev_get_drvdata(dev); \
1234 struct sensor_device_attribute *sensor_attr = \
1235 to_sensor_dev_attr(attr); \
1236 int nr = sensor_attr->index; \
1237 int err; \
1238 long val; \
1239 err = kstrtol(buf, 10, &val); \
1240 if (err < 0) \
1241 return err; \
1242 mutex_lock(&data->update_lock); \
1243 data->reg[nr] = LM75_TEMP_TO_REG(val); \
1244 w83627ehf_write_temp(data, data->addr[nr], data->reg[nr]); \
1245 mutex_unlock(&data->update_lock); \
1246 return count; \
1247 }
1248 store_temp_reg(reg_temp_over, temp_max);
1249 store_temp_reg(reg_temp_hyst, temp_max_hyst);
1250
1251 static ssize_t
1252 show_temp_offset(struct device *dev, struct device_attribute *attr, char *buf)
1253 {
1254 struct w83627ehf_data *data = w83627ehf_update_device(dev);
1255 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1256
1257 return sprintf(buf, "%d\n",
1258 data->temp_offset[sensor_attr->index] * 1000);
1259 }
1260
1261 static ssize_t
1262 store_temp_offset(struct device *dev, struct device_attribute *attr,
1263 const char *buf, size_t count)
1264 {
1265 struct w83627ehf_data *data = dev_get_drvdata(dev);
1266 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1267 int nr = sensor_attr->index;
1268 long val;
1269 int err;
1270
1271 err = kstrtol(buf, 10, &val);
1272 if (err < 0)
1273 return err;
1274
1275 val = clamp_val(DIV_ROUND_CLOSEST(val, 1000), -128, 127);
1276
1277 mutex_lock(&data->update_lock);
1278 data->temp_offset[nr] = val;
1279 w83627ehf_write_value(data, W83627EHF_REG_TEMP_OFFSET[nr], val);
1280 mutex_unlock(&data->update_lock);
1281 return count;
1282 }
1283
1284 static ssize_t
1285 show_temp_type(struct device *dev, struct device_attribute *attr, char *buf)
1286 {
1287 struct w83627ehf_data *data = w83627ehf_update_device(dev);
1288 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1289 int nr = sensor_attr->index;
1290 return sprintf(buf, "%d\n", (int)data->temp_type[nr]);
1291 }
1292
1293 static struct sensor_device_attribute sda_temp_input[] = {
1294 SENSOR_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0),
1295 SENSOR_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1),
1296 SENSOR_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2),
1297 SENSOR_ATTR(temp4_input, S_IRUGO, show_temp, NULL, 3),
1298 SENSOR_ATTR(temp5_input, S_IRUGO, show_temp, NULL, 4),
1299 SENSOR_ATTR(temp6_input, S_IRUGO, show_temp, NULL, 5),
1300 SENSOR_ATTR(temp7_input, S_IRUGO, show_temp, NULL, 6),
1301 SENSOR_ATTR(temp8_input, S_IRUGO, show_temp, NULL, 7),
1302 SENSOR_ATTR(temp9_input, S_IRUGO, show_temp, NULL, 8),
1303 };
1304
1305 static struct sensor_device_attribute sda_temp_label[] = {
1306 SENSOR_ATTR(temp1_label, S_IRUGO, show_temp_label, NULL, 0),
1307 SENSOR_ATTR(temp2_label, S_IRUGO, show_temp_label, NULL, 1),
1308 SENSOR_ATTR(temp3_label, S_IRUGO, show_temp_label, NULL, 2),
1309 SENSOR_ATTR(temp4_label, S_IRUGO, show_temp_label, NULL, 3),
1310 SENSOR_ATTR(temp5_label, S_IRUGO, show_temp_label, NULL, 4),
1311 SENSOR_ATTR(temp6_label, S_IRUGO, show_temp_label, NULL, 5),
1312 SENSOR_ATTR(temp7_label, S_IRUGO, show_temp_label, NULL, 6),
1313 SENSOR_ATTR(temp8_label, S_IRUGO, show_temp_label, NULL, 7),
1314 SENSOR_ATTR(temp9_label, S_IRUGO, show_temp_label, NULL, 8),
1315 };
1316
1317 static struct sensor_device_attribute sda_temp_max[] = {
1318 SENSOR_ATTR(temp1_max, S_IRUGO | S_IWUSR, show_temp_max,
1319 store_temp_max, 0),
1320 SENSOR_ATTR(temp2_max, S_IRUGO | S_IWUSR, show_temp_max,
1321 store_temp_max, 1),
1322 SENSOR_ATTR(temp3_max, S_IRUGO | S_IWUSR, show_temp_max,
1323 store_temp_max, 2),
1324 SENSOR_ATTR(temp4_max, S_IRUGO | S_IWUSR, show_temp_max,
1325 store_temp_max, 3),
1326 SENSOR_ATTR(temp5_max, S_IRUGO | S_IWUSR, show_temp_max,
1327 store_temp_max, 4),
1328 SENSOR_ATTR(temp6_max, S_IRUGO | S_IWUSR, show_temp_max,
1329 store_temp_max, 5),
1330 SENSOR_ATTR(temp7_max, S_IRUGO | S_IWUSR, show_temp_max,
1331 store_temp_max, 6),
1332 SENSOR_ATTR(temp8_max, S_IRUGO | S_IWUSR, show_temp_max,
1333 store_temp_max, 7),
1334 SENSOR_ATTR(temp9_max, S_IRUGO | S_IWUSR, show_temp_max,
1335 store_temp_max, 8),
1336 };
1337
1338 static struct sensor_device_attribute sda_temp_max_hyst[] = {
1339 SENSOR_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
1340 store_temp_max_hyst, 0),
1341 SENSOR_ATTR(temp2_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
1342 store_temp_max_hyst, 1),
1343 SENSOR_ATTR(temp3_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
1344 store_temp_max_hyst, 2),
1345 SENSOR_ATTR(temp4_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
1346 store_temp_max_hyst, 3),
1347 SENSOR_ATTR(temp5_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
1348 store_temp_max_hyst, 4),
1349 SENSOR_ATTR(temp6_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
1350 store_temp_max_hyst, 5),
1351 SENSOR_ATTR(temp7_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
1352 store_temp_max_hyst, 6),
1353 SENSOR_ATTR(temp8_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
1354 store_temp_max_hyst, 7),
1355 SENSOR_ATTR(temp9_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
1356 store_temp_max_hyst, 8),
1357 };
1358
1359 static struct sensor_device_attribute sda_temp_alarm[] = {
1360 SENSOR_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4),
1361 SENSOR_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5),
1362 SENSOR_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 13),
1363 };
1364
1365 static struct sensor_device_attribute sda_temp_type[] = {
1366 SENSOR_ATTR(temp1_type, S_IRUGO, show_temp_type, NULL, 0),
1367 SENSOR_ATTR(temp2_type, S_IRUGO, show_temp_type, NULL, 1),
1368 SENSOR_ATTR(temp3_type, S_IRUGO, show_temp_type, NULL, 2),
1369 };
1370
1371 static struct sensor_device_attribute sda_temp_offset[] = {
1372 SENSOR_ATTR(temp1_offset, S_IRUGO | S_IWUSR, show_temp_offset,
1373 store_temp_offset, 0),
1374 SENSOR_ATTR(temp2_offset, S_IRUGO | S_IWUSR, show_temp_offset,
1375 store_temp_offset, 1),
1376 SENSOR_ATTR(temp3_offset, S_IRUGO | S_IWUSR, show_temp_offset,
1377 store_temp_offset, 2),
1378 };
1379
1380 #define show_pwm_reg(reg) \
1381 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
1382 char *buf) \
1383 { \
1384 struct w83627ehf_data *data = w83627ehf_update_device(dev); \
1385 struct sensor_device_attribute *sensor_attr = \
1386 to_sensor_dev_attr(attr); \
1387 int nr = sensor_attr->index; \
1388 return sprintf(buf, "%d\n", data->reg[nr]); \
1389 }
1390
1391 show_pwm_reg(pwm_mode)
1392 show_pwm_reg(pwm_enable)
1393 show_pwm_reg(pwm)
1394
1395 static ssize_t
1396 store_pwm_mode(struct device *dev, struct device_attribute *attr,
1397 const char *buf, size_t count)
1398 {
1399 struct w83627ehf_data *data = dev_get_drvdata(dev);
1400 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1401 struct w83627ehf_sio_data *sio_data = dev_get_platdata(dev);
1402 int nr = sensor_attr->index;
1403 unsigned long val;
1404 int err;
1405 u16 reg;
1406
1407 err = kstrtoul(buf, 10, &val);
1408 if (err < 0)
1409 return err;
1410
1411 if (val > 1)
1412 return -EINVAL;
1413
1414 /* On NCT67766F, DC mode is only supported for pwm1 */
1415 if (sio_data->kind == nct6776 && nr && val != 1)
1416 return -EINVAL;
1417
1418 mutex_lock(&data->update_lock);
1419 reg = w83627ehf_read_value(data, W83627EHF_REG_PWM_ENABLE[nr]);
1420 data->pwm_mode[nr] = val;
1421 reg &= ~(1 << W83627EHF_PWM_MODE_SHIFT[nr]);
1422 if (!val)
1423 reg |= 1 << W83627EHF_PWM_MODE_SHIFT[nr];
1424 w83627ehf_write_value(data, W83627EHF_REG_PWM_ENABLE[nr], reg);
1425 mutex_unlock(&data->update_lock);
1426 return count;
1427 }
1428
1429 static ssize_t
1430 store_pwm(struct device *dev, struct device_attribute *attr,
1431 const char *buf, size_t count)
1432 {
1433 struct w83627ehf_data *data = dev_get_drvdata(dev);
1434 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1435 int nr = sensor_attr->index;
1436 unsigned long val;
1437 int err;
1438
1439 err = kstrtoul(buf, 10, &val);
1440 if (err < 0)
1441 return err;
1442
1443 val = clamp_val(val, 0, 255);
1444
1445 mutex_lock(&data->update_lock);
1446 data->pwm[nr] = val;
1447 w83627ehf_write_value(data, data->REG_PWM[nr], val);
1448 mutex_unlock(&data->update_lock);
1449 return count;
1450 }
1451
1452 static ssize_t
1453 store_pwm_enable(struct device *dev, struct device_attribute *attr,
1454 const char *buf, size_t count)
1455 {
1456 struct w83627ehf_data *data = dev_get_drvdata(dev);
1457 struct w83627ehf_sio_data *sio_data = dev_get_platdata(dev);
1458 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1459 int nr = sensor_attr->index;
1460 unsigned long val;
1461 int err;
1462 u16 reg;
1463
1464 err = kstrtoul(buf, 10, &val);
1465 if (err < 0)
1466 return err;
1467
1468 if (!val || (val > 4 && val != data->pwm_enable_orig[nr]))
1469 return -EINVAL;
1470 /* SmartFan III mode is not supported on NCT6776F */
1471 if (sio_data->kind == nct6776 && val == 4)
1472 return -EINVAL;
1473
1474 mutex_lock(&data->update_lock);
1475 data->pwm_enable[nr] = val;
1476 if (sio_data->kind == nct6775 || sio_data->kind == nct6776) {
1477 reg = w83627ehf_read_value(data,
1478 NCT6775_REG_FAN_MODE[nr]);
1479 reg &= 0x0f;
1480 reg |= (val - 1) << 4;
1481 w83627ehf_write_value(data,
1482 NCT6775_REG_FAN_MODE[nr], reg);
1483 } else {
1484 reg = w83627ehf_read_value(data, W83627EHF_REG_PWM_ENABLE[nr]);
1485 reg &= ~(0x03 << W83627EHF_PWM_ENABLE_SHIFT[nr]);
1486 reg |= (val - 1) << W83627EHF_PWM_ENABLE_SHIFT[nr];
1487 w83627ehf_write_value(data, W83627EHF_REG_PWM_ENABLE[nr], reg);
1488 }
1489 mutex_unlock(&data->update_lock);
1490 return count;
1491 }
1492
1493
1494 #define show_tol_temp(reg) \
1495 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
1496 char *buf) \
1497 { \
1498 struct w83627ehf_data *data = w83627ehf_update_device(dev); \
1499 struct sensor_device_attribute *sensor_attr = \
1500 to_sensor_dev_attr(attr); \
1501 int nr = sensor_attr->index; \
1502 return sprintf(buf, "%d\n", data->reg[nr] * 1000); \
1503 }
1504
1505 show_tol_temp(tolerance)
1506 show_tol_temp(target_temp)
1507
1508 static ssize_t
1509 store_target_temp(struct device *dev, struct device_attribute *attr,
1510 const char *buf, size_t count)
1511 {
1512 struct w83627ehf_data *data = dev_get_drvdata(dev);
1513 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1514 int nr = sensor_attr->index;
1515 long val;
1516 int err;
1517
1518 err = kstrtol(buf, 10, &val);
1519 if (err < 0)
1520 return err;
1521
1522 val = clamp_val(DIV_ROUND_CLOSEST(val, 1000), 0, 127);
1523
1524 mutex_lock(&data->update_lock);
1525 data->target_temp[nr] = val;
1526 w83627ehf_write_value(data, data->REG_TARGET[nr], val);
1527 mutex_unlock(&data->update_lock);
1528 return count;
1529 }
1530
1531 static ssize_t
1532 store_tolerance(struct device *dev, struct device_attribute *attr,
1533 const char *buf, size_t count)
1534 {
1535 struct w83627ehf_data *data = dev_get_drvdata(dev);
1536 struct w83627ehf_sio_data *sio_data = dev_get_platdata(dev);
1537 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1538 int nr = sensor_attr->index;
1539 u16 reg;
1540 long val;
1541 int err;
1542
1543 err = kstrtol(buf, 10, &val);
1544 if (err < 0)
1545 return err;
1546
1547 /* Limit the temp to 0C - 15C */
1548 val = clamp_val(DIV_ROUND_CLOSEST(val, 1000), 0, 15);
1549
1550 mutex_lock(&data->update_lock);
1551 if (sio_data->kind == nct6775 || sio_data->kind == nct6776) {
1552 /* Limit tolerance further for NCT6776F */
1553 if (sio_data->kind == nct6776 && val > 7)
1554 val = 7;
1555 reg = w83627ehf_read_value(data, NCT6775_REG_FAN_MODE[nr]);
1556 reg = (reg & 0xf0) | val;
1557 w83627ehf_write_value(data, NCT6775_REG_FAN_MODE[nr], reg);
1558 } else {
1559 reg = w83627ehf_read_value(data, W83627EHF_REG_TOLERANCE[nr]);
1560 if (nr == 1)
1561 reg = (reg & 0x0f) | (val << 4);
1562 else
1563 reg = (reg & 0xf0) | val;
1564 w83627ehf_write_value(data, W83627EHF_REG_TOLERANCE[nr], reg);
1565 }
1566 data->tolerance[nr] = val;
1567 mutex_unlock(&data->update_lock);
1568 return count;
1569 }
1570
1571 static struct sensor_device_attribute sda_pwm[] = {
1572 SENSOR_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 0),
1573 SENSOR_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 1),
1574 SENSOR_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 2),
1575 SENSOR_ATTR(pwm4, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 3),
1576 };
1577
1578 static struct sensor_device_attribute sda_pwm_mode[] = {
1579 SENSOR_ATTR(pwm1_mode, S_IWUSR | S_IRUGO, show_pwm_mode,
1580 store_pwm_mode, 0),
1581 SENSOR_ATTR(pwm2_mode, S_IWUSR | S_IRUGO, show_pwm_mode,
1582 store_pwm_mode, 1),
1583 SENSOR_ATTR(pwm3_mode, S_IWUSR | S_IRUGO, show_pwm_mode,
1584 store_pwm_mode, 2),
1585 SENSOR_ATTR(pwm4_mode, S_IWUSR | S_IRUGO, show_pwm_mode,
1586 store_pwm_mode, 3),
1587 };
1588
1589 static struct sensor_device_attribute sda_pwm_enable[] = {
1590 SENSOR_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, show_pwm_enable,
1591 store_pwm_enable, 0),
1592 SENSOR_ATTR(pwm2_enable, S_IWUSR | S_IRUGO, show_pwm_enable,
1593 store_pwm_enable, 1),
1594 SENSOR_ATTR(pwm3_enable, S_IWUSR | S_IRUGO, show_pwm_enable,
1595 store_pwm_enable, 2),
1596 SENSOR_ATTR(pwm4_enable, S_IWUSR | S_IRUGO, show_pwm_enable,
1597 store_pwm_enable, 3),
1598 };
1599
1600 static struct sensor_device_attribute sda_target_temp[] = {
1601 SENSOR_ATTR(pwm1_target, S_IWUSR | S_IRUGO, show_target_temp,
1602 store_target_temp, 0),
1603 SENSOR_ATTR(pwm2_target, S_IWUSR | S_IRUGO, show_target_temp,
1604 store_target_temp, 1),
1605 SENSOR_ATTR(pwm3_target, S_IWUSR | S_IRUGO, show_target_temp,
1606 store_target_temp, 2),
1607 SENSOR_ATTR(pwm4_target, S_IWUSR | S_IRUGO, show_target_temp,
1608 store_target_temp, 3),
1609 };
1610
1611 static struct sensor_device_attribute sda_tolerance[] = {
1612 SENSOR_ATTR(pwm1_tolerance, S_IWUSR | S_IRUGO, show_tolerance,
1613 store_tolerance, 0),
1614 SENSOR_ATTR(pwm2_tolerance, S_IWUSR | S_IRUGO, show_tolerance,
1615 store_tolerance, 1),
1616 SENSOR_ATTR(pwm3_tolerance, S_IWUSR | S_IRUGO, show_tolerance,
1617 store_tolerance, 2),
1618 SENSOR_ATTR(pwm4_tolerance, S_IWUSR | S_IRUGO, show_tolerance,
1619 store_tolerance, 3),
1620 };
1621
1622 /* Smart Fan registers */
1623
1624 #define fan_functions(reg, REG) \
1625 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
1626 char *buf) \
1627 { \
1628 struct w83627ehf_data *data = w83627ehf_update_device(dev); \
1629 struct sensor_device_attribute *sensor_attr = \
1630 to_sensor_dev_attr(attr); \
1631 int nr = sensor_attr->index; \
1632 return sprintf(buf, "%d\n", data->reg[nr]); \
1633 } \
1634 static ssize_t \
1635 store_##reg(struct device *dev, struct device_attribute *attr, \
1636 const char *buf, size_t count) \
1637 { \
1638 struct w83627ehf_data *data = dev_get_drvdata(dev); \
1639 struct sensor_device_attribute *sensor_attr = \
1640 to_sensor_dev_attr(attr); \
1641 int nr = sensor_attr->index; \
1642 unsigned long val; \
1643 int err; \
1644 err = kstrtoul(buf, 10, &val); \
1645 if (err < 0) \
1646 return err; \
1647 val = clamp_val(val, 1, 255); \
1648 mutex_lock(&data->update_lock); \
1649 data->reg[nr] = val; \
1650 w83627ehf_write_value(data, data->REG_##REG[nr], val); \
1651 mutex_unlock(&data->update_lock); \
1652 return count; \
1653 }
1654
1655 fan_functions(fan_start_output, FAN_START_OUTPUT)
1656 fan_functions(fan_stop_output, FAN_STOP_OUTPUT)
1657 fan_functions(fan_max_output, FAN_MAX_OUTPUT)
1658 fan_functions(fan_step_output, FAN_STEP_OUTPUT)
1659
1660 #define fan_time_functions(reg, REG) \
1661 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
1662 char *buf) \
1663 { \
1664 struct w83627ehf_data *data = w83627ehf_update_device(dev); \
1665 struct sensor_device_attribute *sensor_attr = \
1666 to_sensor_dev_attr(attr); \
1667 int nr = sensor_attr->index; \
1668 return sprintf(buf, "%d\n", \
1669 step_time_from_reg(data->reg[nr], \
1670 data->pwm_mode[nr])); \
1671 } \
1672 \
1673 static ssize_t \
1674 store_##reg(struct device *dev, struct device_attribute *attr, \
1675 const char *buf, size_t count) \
1676 { \
1677 struct w83627ehf_data *data = dev_get_drvdata(dev); \
1678 struct sensor_device_attribute *sensor_attr = \
1679 to_sensor_dev_attr(attr); \
1680 int nr = sensor_attr->index; \
1681 unsigned long val; \
1682 int err; \
1683 err = kstrtoul(buf, 10, &val); \
1684 if (err < 0) \
1685 return err; \
1686 val = step_time_to_reg(val, data->pwm_mode[nr]); \
1687 mutex_lock(&data->update_lock); \
1688 data->reg[nr] = val; \
1689 w83627ehf_write_value(data, data->REG_##REG[nr], val); \
1690 mutex_unlock(&data->update_lock); \
1691 return count; \
1692 } \
1693
1694 fan_time_functions(fan_stop_time, FAN_STOP_TIME)
1695
1696 static ssize_t name_show(struct device *dev, struct device_attribute *attr,
1697 char *buf)
1698 {
1699 struct w83627ehf_data *data = dev_get_drvdata(dev);
1700
1701 return sprintf(buf, "%s\n", data->name);
1702 }
1703 static DEVICE_ATTR_RO(name);
1704
1705 static struct sensor_device_attribute sda_sf3_arrays_fan4[] = {
1706 SENSOR_ATTR(pwm4_stop_time, S_IWUSR | S_IRUGO, show_fan_stop_time,
1707 store_fan_stop_time, 3),
1708 SENSOR_ATTR(pwm4_start_output, S_IWUSR | S_IRUGO, show_fan_start_output,
1709 store_fan_start_output, 3),
1710 SENSOR_ATTR(pwm4_stop_output, S_IWUSR | S_IRUGO, show_fan_stop_output,
1711 store_fan_stop_output, 3),
1712 SENSOR_ATTR(pwm4_max_output, S_IWUSR | S_IRUGO, show_fan_max_output,
1713 store_fan_max_output, 3),
1714 SENSOR_ATTR(pwm4_step_output, S_IWUSR | S_IRUGO, show_fan_step_output,
1715 store_fan_step_output, 3),
1716 };
1717
1718 static struct sensor_device_attribute sda_sf3_arrays_fan3[] = {
1719 SENSOR_ATTR(pwm3_stop_time, S_IWUSR | S_IRUGO, show_fan_stop_time,
1720 store_fan_stop_time, 2),
1721 SENSOR_ATTR(pwm3_start_output, S_IWUSR | S_IRUGO, show_fan_start_output,
1722 store_fan_start_output, 2),
1723 SENSOR_ATTR(pwm3_stop_output, S_IWUSR | S_IRUGO, show_fan_stop_output,
1724 store_fan_stop_output, 2),
1725 };
1726
1727 static struct sensor_device_attribute sda_sf3_arrays[] = {
1728 SENSOR_ATTR(pwm1_stop_time, S_IWUSR | S_IRUGO, show_fan_stop_time,
1729 store_fan_stop_time, 0),
1730 SENSOR_ATTR(pwm2_stop_time, S_IWUSR | S_IRUGO, show_fan_stop_time,
1731 store_fan_stop_time, 1),
1732 SENSOR_ATTR(pwm1_start_output, S_IWUSR | S_IRUGO, show_fan_start_output,
1733 store_fan_start_output, 0),
1734 SENSOR_ATTR(pwm2_start_output, S_IWUSR | S_IRUGO, show_fan_start_output,
1735 store_fan_start_output, 1),
1736 SENSOR_ATTR(pwm1_stop_output, S_IWUSR | S_IRUGO, show_fan_stop_output,
1737 store_fan_stop_output, 0),
1738 SENSOR_ATTR(pwm2_stop_output, S_IWUSR | S_IRUGO, show_fan_stop_output,
1739 store_fan_stop_output, 1),
1740 };
1741
1742
1743 /*
1744 * pwm1 and pwm3 don't support max and step settings on all chips.
1745 * Need to check support while generating/removing attribute files.
1746 */
1747 static struct sensor_device_attribute sda_sf3_max_step_arrays[] = {
1748 SENSOR_ATTR(pwm1_max_output, S_IWUSR | S_IRUGO, show_fan_max_output,
1749 store_fan_max_output, 0),
1750 SENSOR_ATTR(pwm1_step_output, S_IWUSR | S_IRUGO, show_fan_step_output,
1751 store_fan_step_output, 0),
1752 SENSOR_ATTR(pwm2_max_output, S_IWUSR | S_IRUGO, show_fan_max_output,
1753 store_fan_max_output, 1),
1754 SENSOR_ATTR(pwm2_step_output, S_IWUSR | S_IRUGO, show_fan_step_output,
1755 store_fan_step_output, 1),
1756 SENSOR_ATTR(pwm3_max_output, S_IWUSR | S_IRUGO, show_fan_max_output,
1757 store_fan_max_output, 2),
1758 SENSOR_ATTR(pwm3_step_output, S_IWUSR | S_IRUGO, show_fan_step_output,
1759 store_fan_step_output, 2),
1760 };
1761
1762 static ssize_t
1763 cpu0_vid_show(struct device *dev, struct device_attribute *attr, char *buf)
1764 {
1765 struct w83627ehf_data *data = dev_get_drvdata(dev);
1766 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
1767 }
1768 static DEVICE_ATTR_RO(cpu0_vid);
1769
1770
1771 /* Case open detection */
1772
1773 static ssize_t
1774 show_caseopen(struct device *dev, struct device_attribute *attr, char *buf)
1775 {
1776 struct w83627ehf_data *data = w83627ehf_update_device(dev);
1777
1778 return sprintf(buf, "%d\n",
1779 !!(data->caseopen & to_sensor_dev_attr_2(attr)->index));
1780 }
1781
1782 static ssize_t
1783 clear_caseopen(struct device *dev, struct device_attribute *attr,
1784 const char *buf, size_t count)
1785 {
1786 struct w83627ehf_data *data = dev_get_drvdata(dev);
1787 unsigned long val;
1788 u16 reg, mask;
1789
1790 if (kstrtoul(buf, 10, &val) || val != 0)
1791 return -EINVAL;
1792
1793 mask = to_sensor_dev_attr_2(attr)->nr;
1794
1795 mutex_lock(&data->update_lock);
1796 reg = w83627ehf_read_value(data, W83627EHF_REG_CASEOPEN_CLR);
1797 w83627ehf_write_value(data, W83627EHF_REG_CASEOPEN_CLR, reg | mask);
1798 w83627ehf_write_value(data, W83627EHF_REG_CASEOPEN_CLR, reg & ~mask);
1799 data->valid = 0; /* Force cache refresh */
1800 mutex_unlock(&data->update_lock);
1801
1802 return count;
1803 }
1804
1805 static struct sensor_device_attribute_2 sda_caseopen[] = {
1806 SENSOR_ATTR_2(intrusion0_alarm, S_IWUSR | S_IRUGO, show_caseopen,
1807 clear_caseopen, 0x80, 0x10),
1808 SENSOR_ATTR_2(intrusion1_alarm, S_IWUSR | S_IRUGO, show_caseopen,
1809 clear_caseopen, 0x40, 0x40),
1810 };
1811
1812 /*
1813 * Driver and device management
1814 */
1815
1816 static void w83627ehf_device_remove_files(struct device *dev)
1817 {
1818 /*
1819 * some entries in the following arrays may not have been used in
1820 * device_create_file(), but device_remove_file() will ignore them
1821 */
1822 int i;
1823 struct w83627ehf_data *data = dev_get_drvdata(dev);
1824
1825 for (i = 0; i < ARRAY_SIZE(sda_sf3_arrays); i++)
1826 device_remove_file(dev, &sda_sf3_arrays[i].dev_attr);
1827 for (i = 0; i < ARRAY_SIZE(sda_sf3_max_step_arrays); i++) {
1828 struct sensor_device_attribute *attr =
1829 &sda_sf3_max_step_arrays[i];
1830 if (data->REG_FAN_STEP_OUTPUT &&
1831 data->REG_FAN_STEP_OUTPUT[attr->index] != 0xff)
1832 device_remove_file(dev, &attr->dev_attr);
1833 }
1834 for (i = 0; i < ARRAY_SIZE(sda_sf3_arrays_fan3); i++)
1835 device_remove_file(dev, &sda_sf3_arrays_fan3[i].dev_attr);
1836 for (i = 0; i < ARRAY_SIZE(sda_sf3_arrays_fan4); i++)
1837 device_remove_file(dev, &sda_sf3_arrays_fan4[i].dev_attr);
1838 for (i = 0; i < data->in_num; i++) {
1839 if ((i == 6) && data->in6_skip)
1840 continue;
1841 device_remove_file(dev, &sda_in_input[i].dev_attr);
1842 device_remove_file(dev, &sda_in_alarm[i].dev_attr);
1843 device_remove_file(dev, &sda_in_min[i].dev_attr);
1844 device_remove_file(dev, &sda_in_max[i].dev_attr);
1845 }
1846 for (i = 0; i < 5; i++) {
1847 device_remove_file(dev, &sda_fan_input[i].dev_attr);
1848 device_remove_file(dev, &sda_fan_alarm[i].dev_attr);
1849 device_remove_file(dev, &sda_fan_div[i].dev_attr);
1850 device_remove_file(dev, &sda_fan_min[i].dev_attr);
1851 }
1852 for (i = 0; i < data->pwm_num; i++) {
1853 device_remove_file(dev, &sda_pwm[i].dev_attr);
1854 device_remove_file(dev, &sda_pwm_mode[i].dev_attr);
1855 device_remove_file(dev, &sda_pwm_enable[i].dev_attr);
1856 device_remove_file(dev, &sda_target_temp[i].dev_attr);
1857 device_remove_file(dev, &sda_tolerance[i].dev_attr);
1858 }
1859 for (i = 0; i < NUM_REG_TEMP; i++) {
1860 if (!(data->have_temp & (1 << i)))
1861 continue;
1862 device_remove_file(dev, &sda_temp_input[i].dev_attr);
1863 device_remove_file(dev, &sda_temp_label[i].dev_attr);
1864 if (i == 2 && data->temp3_val_only)
1865 continue;
1866 device_remove_file(dev, &sda_temp_max[i].dev_attr);
1867 device_remove_file(dev, &sda_temp_max_hyst[i].dev_attr);
1868 if (i > 2)
1869 continue;
1870 device_remove_file(dev, &sda_temp_alarm[i].dev_attr);
1871 device_remove_file(dev, &sda_temp_type[i].dev_attr);
1872 device_remove_file(dev, &sda_temp_offset[i].dev_attr);
1873 }
1874
1875 device_remove_file(dev, &sda_caseopen[0].dev_attr);
1876 device_remove_file(dev, &sda_caseopen[1].dev_attr);
1877
1878 device_remove_file(dev, &dev_attr_name);
1879 device_remove_file(dev, &dev_attr_cpu0_vid);
1880 }
1881
1882 /* Get the monitoring functions started */
1883 static inline void w83627ehf_init_device(struct w83627ehf_data *data,
1884 enum kinds kind)
1885 {
1886 int i;
1887 u8 tmp, diode;
1888
1889 /* Start monitoring is needed */
1890 tmp = w83627ehf_read_value(data, W83627EHF_REG_CONFIG);
1891 if (!(tmp & 0x01))
1892 w83627ehf_write_value(data, W83627EHF_REG_CONFIG,
1893 tmp | 0x01);
1894
1895 /* Enable temperature sensors if needed */
1896 for (i = 0; i < NUM_REG_TEMP; i++) {
1897 if (!(data->have_temp & (1 << i)))
1898 continue;
1899 if (!data->reg_temp_config[i])
1900 continue;
1901 tmp = w83627ehf_read_value(data,
1902 data->reg_temp_config[i]);
1903 if (tmp & 0x01)
1904 w83627ehf_write_value(data,
1905 data->reg_temp_config[i],
1906 tmp & 0xfe);
1907 }
1908
1909 /* Enable VBAT monitoring if needed */
1910 tmp = w83627ehf_read_value(data, W83627EHF_REG_VBAT);
1911 if (!(tmp & 0x01))
1912 w83627ehf_write_value(data, W83627EHF_REG_VBAT, tmp | 0x01);
1913
1914 /* Get thermal sensor types */
1915 switch (kind) {
1916 case w83627ehf:
1917 diode = w83627ehf_read_value(data, W83627EHF_REG_DIODE);
1918 break;
1919 case w83627uhg:
1920 diode = 0x00;
1921 break;
1922 default:
1923 diode = 0x70;
1924 }
1925 for (i = 0; i < 3; i++) {
1926 const char *label = NULL;
1927
1928 if (data->temp_label)
1929 label = data->temp_label[data->temp_src[i]];
1930
1931 /* Digital source overrides analog type */
1932 if (label && strncmp(label, "PECI", 4) == 0)
1933 data->temp_type[i] = 6;
1934 else if (label && strncmp(label, "AMD", 3) == 0)
1935 data->temp_type[i] = 5;
1936 else if ((tmp & (0x02 << i)))
1937 data->temp_type[i] = (diode & (0x10 << i)) ? 1 : 3;
1938 else
1939 data->temp_type[i] = 4; /* thermistor */
1940 }
1941 }
1942
1943 static void w82627ehf_swap_tempreg(struct w83627ehf_data *data,
1944 int r1, int r2)
1945 {
1946 swap(data->temp_src[r1], data->temp_src[r2]);
1947 swap(data->reg_temp[r1], data->reg_temp[r2]);
1948 swap(data->reg_temp_over[r1], data->reg_temp_over[r2]);
1949 swap(data->reg_temp_hyst[r1], data->reg_temp_hyst[r2]);
1950 swap(data->reg_temp_config[r1], data->reg_temp_config[r2]);
1951 }
1952
1953 static void
1954 w83627ehf_set_temp_reg_ehf(struct w83627ehf_data *data, int n_temp)
1955 {
1956 int i;
1957
1958 for (i = 0; i < n_temp; i++) {
1959 data->reg_temp[i] = W83627EHF_REG_TEMP[i];
1960 data->reg_temp_over[i] = W83627EHF_REG_TEMP_OVER[i];
1961 data->reg_temp_hyst[i] = W83627EHF_REG_TEMP_HYST[i];
1962 data->reg_temp_config[i] = W83627EHF_REG_TEMP_CONFIG[i];
1963 }
1964 }
1965
1966 static void
1967 w83627ehf_check_fan_inputs(const struct w83627ehf_sio_data *sio_data,
1968 struct w83627ehf_data *data)
1969 {
1970 int fan3pin, fan4pin, fan4min, fan5pin, regval;
1971
1972 /* The W83627UHG is simple, only two fan inputs, no config */
1973 if (sio_data->kind == w83627uhg) {
1974 data->has_fan = 0x03; /* fan1 and fan2 */
1975 data->has_fan_min = 0x03;
1976 return;
1977 }
1978
1979 /* fan4 and fan5 share some pins with the GPIO and serial flash */
1980 if (sio_data->kind == nct6775) {
1981 /* On NCT6775, fan4 shares pins with the fdc interface */
1982 fan3pin = 1;
1983 fan4pin = !(superio_inb(sio_data->sioreg, 0x2A) & 0x80);
1984 fan4min = 0;
1985 fan5pin = 0;
1986 } else if (sio_data->kind == nct6776) {
1987 bool gpok = superio_inb(sio_data->sioreg, 0x27) & 0x80;
1988
1989 superio_select(sio_data->sioreg, W83627EHF_LD_HWM);
1990 regval = superio_inb(sio_data->sioreg, SIO_REG_ENABLE);
1991
1992 if (regval & 0x80)
1993 fan3pin = gpok;
1994 else
1995 fan3pin = !(superio_inb(sio_data->sioreg, 0x24) & 0x40);
1996
1997 if (regval & 0x40)
1998 fan4pin = gpok;
1999 else
2000 fan4pin = !!(superio_inb(sio_data->sioreg, 0x1C) & 0x01);
2001
2002 if (regval & 0x20)
2003 fan5pin = gpok;
2004 else
2005 fan5pin = !!(superio_inb(sio_data->sioreg, 0x1C) & 0x02);
2006
2007 fan4min = fan4pin;
2008 } else if (sio_data->kind == w83667hg || sio_data->kind == w83667hg_b) {
2009 fan3pin = 1;
2010 fan4pin = superio_inb(sio_data->sioreg, 0x27) & 0x40;
2011 fan5pin = superio_inb(sio_data->sioreg, 0x27) & 0x20;
2012 fan4min = fan4pin;
2013 } else {
2014 fan3pin = 1;
2015 fan4pin = !(superio_inb(sio_data->sioreg, 0x29) & 0x06);
2016 fan5pin = !(superio_inb(sio_data->sioreg, 0x24) & 0x02);
2017 fan4min = fan4pin;
2018 }
2019
2020 data->has_fan = data->has_fan_min = 0x03; /* fan1 and fan2 */
2021 data->has_fan |= (fan3pin << 2);
2022 data->has_fan_min |= (fan3pin << 2);
2023
2024 if (sio_data->kind == nct6775 || sio_data->kind == nct6776) {
2025 /*
2026 * NCT6775F and NCT6776F don't have the W83627EHF_REG_FANDIV1
2027 * register
2028 */
2029 data->has_fan |= (fan4pin << 3) | (fan5pin << 4);
2030 data->has_fan_min |= (fan4min << 3) | (fan5pin << 4);
2031 } else {
2032 /*
2033 * It looks like fan4 and fan5 pins can be alternatively used
2034 * as fan on/off switches, but fan5 control is write only :/
2035 * We assume that if the serial interface is disabled, designers
2036 * connected fan5 as input unless they are emitting log 1, which
2037 * is not the default.
2038 */
2039 regval = w83627ehf_read_value(data, W83627EHF_REG_FANDIV1);
2040 if ((regval & (1 << 2)) && fan4pin) {
2041 data->has_fan |= (1 << 3);
2042 data->has_fan_min |= (1 << 3);
2043 }
2044 if (!(regval & (1 << 1)) && fan5pin) {
2045 data->has_fan |= (1 << 4);
2046 data->has_fan_min |= (1 << 4);
2047 }
2048 }
2049 }
2050
2051 static int w83627ehf_probe(struct platform_device *pdev)
2052 {
2053 struct device *dev = &pdev->dev;
2054 struct w83627ehf_sio_data *sio_data = dev_get_platdata(dev);
2055 struct w83627ehf_data *data;
2056 struct resource *res;
2057 u8 en_vrm10;
2058 int i, err = 0;
2059
2060 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
2061 if (!request_region(res->start, IOREGION_LENGTH, DRVNAME)) {
2062 err = -EBUSY;
2063 dev_err(dev, "Failed to request region 0x%lx-0x%lx\n",
2064 (unsigned long)res->start,
2065 (unsigned long)res->start + IOREGION_LENGTH - 1);
2066 goto exit;
2067 }
2068
2069 data = devm_kzalloc(&pdev->dev, sizeof(struct w83627ehf_data),
2070 GFP_KERNEL);
2071 if (!data) {
2072 err = -ENOMEM;
2073 goto exit_release;
2074 }
2075
2076 data->addr = res->start;
2077 mutex_init(&data->lock);
2078 mutex_init(&data->update_lock);
2079 data->name = w83627ehf_device_names[sio_data->kind];
2080 data->bank = 0xff; /* Force initial bank selection */
2081 platform_set_drvdata(pdev, data);
2082
2083 /* 627EHG and 627EHF have 10 voltage inputs; 627DHG and 667HG have 9 */
2084 data->in_num = (sio_data->kind == w83627ehf) ? 10 : 9;
2085 /* 667HG, NCT6775F, and NCT6776F have 3 pwms, and 627UHG has only 2 */
2086 switch (sio_data->kind) {
2087 default:
2088 data->pwm_num = 4;
2089 break;
2090 case w83667hg:
2091 case w83667hg_b:
2092 case nct6775:
2093 case nct6776:
2094 data->pwm_num = 3;
2095 break;
2096 case w83627uhg:
2097 data->pwm_num = 2;
2098 break;
2099 }
2100
2101 /* Default to 3 temperature inputs, code below will adjust as needed */
2102 data->have_temp = 0x07;
2103
2104 /* Deal with temperature register setup first. */
2105 if (sio_data->kind == nct6775 || sio_data->kind == nct6776) {
2106 int mask = 0;
2107
2108 /*
2109 * Display temperature sensor output only if it monitors
2110 * a source other than one already reported. Always display
2111 * first three temperature registers, though.
2112 */
2113 for (i = 0; i < NUM_REG_TEMP; i++) {
2114 u8 src;
2115
2116 data->reg_temp[i] = NCT6775_REG_TEMP[i];
2117 data->reg_temp_over[i] = NCT6775_REG_TEMP_OVER[i];
2118 data->reg_temp_hyst[i] = NCT6775_REG_TEMP_HYST[i];
2119 data->reg_temp_config[i] = NCT6775_REG_TEMP_CONFIG[i];
2120
2121 src = w83627ehf_read_value(data,
2122 NCT6775_REG_TEMP_SOURCE[i]);
2123 src &= 0x1f;
2124 if (src && !(mask & (1 << src))) {
2125 data->have_temp |= 1 << i;
2126 mask |= 1 << src;
2127 }
2128
2129 data->temp_src[i] = src;
2130
2131 /*
2132 * Now do some register swapping if index 0..2 don't
2133 * point to SYSTIN(1), CPUIN(2), and AUXIN(3).
2134 * Idea is to have the first three attributes
2135 * report SYSTIN, CPUIN, and AUXIN if possible
2136 * without overriding the basic system configuration.
2137 */
2138 if (i > 0 && data->temp_src[0] != 1
2139 && data->temp_src[i] == 1)
2140 w82627ehf_swap_tempreg(data, 0, i);
2141 if (i > 1 && data->temp_src[1] != 2
2142 && data->temp_src[i] == 2)
2143 w82627ehf_swap_tempreg(data, 1, i);
2144 if (i > 2 && data->temp_src[2] != 3
2145 && data->temp_src[i] == 3)
2146 w82627ehf_swap_tempreg(data, 2, i);
2147 }
2148 if (sio_data->kind == nct6776) {
2149 /*
2150 * On NCT6776, AUXTIN and VIN3 pins are shared.
2151 * Only way to detect it is to check if AUXTIN is used
2152 * as a temperature source, and if that source is
2153 * enabled.
2154 *
2155 * If that is the case, disable in6, which reports VIN3.
2156 * Otherwise disable temp3.
2157 */
2158 if (data->temp_src[2] == 3) {
2159 u8 reg;
2160
2161 if (data->reg_temp_config[2])
2162 reg = w83627ehf_read_value(data,
2163 data->reg_temp_config[2]);
2164 else
2165 reg = 0; /* Assume AUXTIN is used */
2166
2167 if (reg & 0x01)
2168 data->have_temp &= ~(1 << 2);
2169 else
2170 data->in6_skip = 1;
2171 }
2172 data->temp_label = nct6776_temp_label;
2173 } else {
2174 data->temp_label = nct6775_temp_label;
2175 }
2176 data->have_temp_offset = data->have_temp & 0x07;
2177 for (i = 0; i < 3; i++) {
2178 if (data->temp_src[i] > 3)
2179 data->have_temp_offset &= ~(1 << i);
2180 }
2181 } else if (sio_data->kind == w83667hg_b) {
2182 u8 reg;
2183
2184 w83627ehf_set_temp_reg_ehf(data, 4);
2185
2186 /*
2187 * Temperature sources are selected with bank 0, registers 0x49
2188 * and 0x4a.
2189 */
2190 reg = w83627ehf_read_value(data, 0x4a);
2191 data->temp_src[0] = reg >> 5;
2192 reg = w83627ehf_read_value(data, 0x49);
2193 data->temp_src[1] = reg & 0x07;
2194 data->temp_src[2] = (reg >> 4) & 0x07;
2195
2196 /*
2197 * W83667HG-B has another temperature register at 0x7e.
2198 * The temperature source is selected with register 0x7d.
2199 * Support it if the source differs from already reported
2200 * sources.
2201 */
2202 reg = w83627ehf_read_value(data, 0x7d);
2203 reg &= 0x07;
2204 if (reg != data->temp_src[0] && reg != data->temp_src[1]
2205 && reg != data->temp_src[2]) {
2206 data->temp_src[3] = reg;
2207 data->have_temp |= 1 << 3;
2208 }
2209
2210 /*
2211 * Chip supports either AUXTIN or VIN3. Try to find out which
2212 * one.
2213 */
2214 reg = w83627ehf_read_value(data, W83627EHF_REG_TEMP_CONFIG[2]);
2215 if (data->temp_src[2] == 2 && (reg & 0x01))
2216 data->have_temp &= ~(1 << 2);
2217
2218 if ((data->temp_src[2] == 2 && (data->have_temp & (1 << 2)))
2219 || (data->temp_src[3] == 2 && (data->have_temp & (1 << 3))))
2220 data->in6_skip = 1;
2221
2222 data->temp_label = w83667hg_b_temp_label;
2223 data->have_temp_offset = data->have_temp & 0x07;
2224 for (i = 0; i < 3; i++) {
2225 if (data->temp_src[i] > 2)
2226 data->have_temp_offset &= ~(1 << i);
2227 }
2228 } else if (sio_data->kind == w83627uhg) {
2229 u8 reg;
2230
2231 w83627ehf_set_temp_reg_ehf(data, 3);
2232
2233 /*
2234 * Temperature sources for temp2 and temp3 are selected with
2235 * bank 0, registers 0x49 and 0x4a.
2236 */
2237 data->temp_src[0] = 0; /* SYSTIN */
2238 reg = w83627ehf_read_value(data, 0x49) & 0x07;
2239 /* Adjust to have the same mapping as other source registers */
2240 if (reg == 0)
2241 data->temp_src[1] = 1;
2242 else if (reg >= 2 && reg <= 5)
2243 data->temp_src[1] = reg + 2;
2244 else /* should never happen */
2245 data->have_temp &= ~(1 << 1);
2246 reg = w83627ehf_read_value(data, 0x4a);
2247 data->temp_src[2] = reg >> 5;
2248
2249 /*
2250 * Skip temp3 if source is invalid or the same as temp1
2251 * or temp2.
2252 */
2253 if (data->temp_src[2] == 2 || data->temp_src[2] == 3 ||
2254 data->temp_src[2] == data->temp_src[0] ||
2255 ((data->have_temp & (1 << 1)) &&
2256 data->temp_src[2] == data->temp_src[1]))
2257 data->have_temp &= ~(1 << 2);
2258 else
2259 data->temp3_val_only = 1; /* No limit regs */
2260
2261 data->in6_skip = 1; /* No VIN3 */
2262
2263 data->temp_label = w83667hg_b_temp_label;
2264 data->have_temp_offset = data->have_temp & 0x03;
2265 for (i = 0; i < 3; i++) {
2266 if (data->temp_src[i] > 1)
2267 data->have_temp_offset &= ~(1 << i);
2268 }
2269 } else {
2270 w83627ehf_set_temp_reg_ehf(data, 3);
2271
2272 /* Temperature sources are fixed */
2273
2274 if (sio_data->kind == w83667hg) {
2275 u8 reg;
2276
2277 /*
2278 * Chip supports either AUXTIN or VIN3. Try to find
2279 * out which one.
2280 */
2281 reg = w83627ehf_read_value(data,
2282 W83627EHF_REG_TEMP_CONFIG[2]);
2283 if (reg & 0x01)
2284 data->have_temp &= ~(1 << 2);
2285 else
2286 data->in6_skip = 1;
2287 }
2288 data->have_temp_offset = data->have_temp & 0x07;
2289 }
2290
2291 if (sio_data->kind == nct6775) {
2292 data->has_fan_div = true;
2293 data->fan_from_reg = fan_from_reg16;
2294 data->fan_from_reg_min = fan_from_reg8;
2295 data->REG_PWM = NCT6775_REG_PWM;
2296 data->REG_TARGET = NCT6775_REG_TARGET;
2297 data->REG_FAN = NCT6775_REG_FAN;
2298 data->REG_FAN_MIN = W83627EHF_REG_FAN_MIN;
2299 data->REG_FAN_START_OUTPUT = NCT6775_REG_FAN_START_OUTPUT;
2300 data->REG_FAN_STOP_OUTPUT = NCT6775_REG_FAN_STOP_OUTPUT;
2301 data->REG_FAN_STOP_TIME = NCT6775_REG_FAN_STOP_TIME;
2302 data->REG_FAN_MAX_OUTPUT = NCT6775_REG_FAN_MAX_OUTPUT;
2303 data->REG_FAN_STEP_OUTPUT = NCT6775_REG_FAN_STEP_OUTPUT;
2304 } else if (sio_data->kind == nct6776) {
2305 data->has_fan_div = false;
2306 data->fan_from_reg = fan_from_reg13;
2307 data->fan_from_reg_min = fan_from_reg13;
2308 data->REG_PWM = NCT6775_REG_PWM;
2309 data->REG_TARGET = NCT6775_REG_TARGET;
2310 data->REG_FAN = NCT6775_REG_FAN;
2311 data->REG_FAN_MIN = NCT6776_REG_FAN_MIN;
2312 data->REG_FAN_START_OUTPUT = NCT6775_REG_FAN_START_OUTPUT;
2313 data->REG_FAN_STOP_OUTPUT = NCT6775_REG_FAN_STOP_OUTPUT;
2314 data->REG_FAN_STOP_TIME = NCT6775_REG_FAN_STOP_TIME;
2315 } else if (sio_data->kind == w83667hg_b) {
2316 data->has_fan_div = true;
2317 data->fan_from_reg = fan_from_reg8;
2318 data->fan_from_reg_min = fan_from_reg8;
2319 data->REG_PWM = W83627EHF_REG_PWM;
2320 data->REG_TARGET = W83627EHF_REG_TARGET;
2321 data->REG_FAN = W83627EHF_REG_FAN;
2322 data->REG_FAN_MIN = W83627EHF_REG_FAN_MIN;
2323 data->REG_FAN_START_OUTPUT = W83627EHF_REG_FAN_START_OUTPUT;
2324 data->REG_FAN_STOP_OUTPUT = W83627EHF_REG_FAN_STOP_OUTPUT;
2325 data->REG_FAN_STOP_TIME = W83627EHF_REG_FAN_STOP_TIME;
2326 data->REG_FAN_MAX_OUTPUT =
2327 W83627EHF_REG_FAN_MAX_OUTPUT_W83667_B;
2328 data->REG_FAN_STEP_OUTPUT =
2329 W83627EHF_REG_FAN_STEP_OUTPUT_W83667_B;
2330 } else {
2331 data->has_fan_div = true;
2332 data->fan_from_reg = fan_from_reg8;
2333 data->fan_from_reg_min = fan_from_reg8;
2334 data->REG_PWM = W83627EHF_REG_PWM;
2335 data->REG_TARGET = W83627EHF_REG_TARGET;
2336 data->REG_FAN = W83627EHF_REG_FAN;
2337 data->REG_FAN_MIN = W83627EHF_REG_FAN_MIN;
2338 data->REG_FAN_START_OUTPUT = W83627EHF_REG_FAN_START_OUTPUT;
2339 data->REG_FAN_STOP_OUTPUT = W83627EHF_REG_FAN_STOP_OUTPUT;
2340 data->REG_FAN_STOP_TIME = W83627EHF_REG_FAN_STOP_TIME;
2341 data->REG_FAN_MAX_OUTPUT =
2342 W83627EHF_REG_FAN_MAX_OUTPUT_COMMON;
2343 data->REG_FAN_STEP_OUTPUT =
2344 W83627EHF_REG_FAN_STEP_OUTPUT_COMMON;
2345 }
2346
2347 /* Setup input voltage scaling factors */
2348 if (sio_data->kind == w83627uhg)
2349 data->scale_in = scale_in_w83627uhg;
2350 else
2351 data->scale_in = scale_in_common;
2352
2353 /* Initialize the chip */
2354 w83627ehf_init_device(data, sio_data->kind);
2355
2356 data->vrm = vid_which_vrm();
2357
2358 err = superio_enter(sio_data->sioreg);
2359 if (err)
2360 goto exit_release;
2361
2362 /* Read VID value */
2363 if (sio_data->kind == w83667hg || sio_data->kind == w83667hg_b ||
2364 sio_data->kind == nct6775 || sio_data->kind == nct6776) {
2365 /*
2366 * W83667HG has different pins for VID input and output, so
2367 * we can get the VID input values directly at logical device D
2368 * 0xe3.
2369 */
2370 superio_select(sio_data->sioreg, W83667HG_LD_VID);
2371 data->vid = superio_inb(sio_data->sioreg, 0xe3);
2372 err = device_create_file(dev, &dev_attr_cpu0_vid);
2373 if (err) {
2374 superio_exit(sio_data->sioreg);
2375 goto exit_release;
2376 }
2377 } else if (sio_data->kind != w83627uhg) {
2378 superio_select(sio_data->sioreg, W83627EHF_LD_HWM);
2379 if (superio_inb(sio_data->sioreg, SIO_REG_VID_CTRL) & 0x80) {
2380 /*
2381 * Set VID input sensibility if needed. In theory the
2382 * BIOS should have set it, but in practice it's not
2383 * always the case. We only do it for the W83627EHF/EHG
2384 * because the W83627DHG is more complex in this
2385 * respect.
2386 */
2387 if (sio_data->kind == w83627ehf) {
2388 en_vrm10 = superio_inb(sio_data->sioreg,
2389 SIO_REG_EN_VRM10);
2390 if ((en_vrm10 & 0x08) && data->vrm == 90) {
2391 dev_warn(dev,
2392 "Setting VID input voltage to TTL\n");
2393 superio_outb(sio_data->sioreg,
2394 SIO_REG_EN_VRM10,
2395 en_vrm10 & ~0x08);
2396 } else if (!(en_vrm10 & 0x08)
2397 && data->vrm == 100) {
2398 dev_warn(dev,
2399 "Setting VID input voltage to VRM10\n");
2400 superio_outb(sio_data->sioreg,
2401 SIO_REG_EN_VRM10,
2402 en_vrm10 | 0x08);
2403 }
2404 }
2405
2406 data->vid = superio_inb(sio_data->sioreg,
2407 SIO_REG_VID_DATA);
2408 if (sio_data->kind == w83627ehf) /* 6 VID pins only */
2409 data->vid &= 0x3f;
2410
2411 err = device_create_file(dev, &dev_attr_cpu0_vid);
2412 if (err) {
2413 superio_exit(sio_data->sioreg);
2414 goto exit_release;
2415 }
2416 } else {
2417 dev_info(dev,
2418 "VID pins in output mode, CPU VID not available\n");
2419 }
2420 }
2421
2422 if (fan_debounce &&
2423 (sio_data->kind == nct6775 || sio_data->kind == nct6776)) {
2424 u8 tmp;
2425
2426 superio_select(sio_data->sioreg, W83627EHF_LD_HWM);
2427 tmp = superio_inb(sio_data->sioreg, NCT6775_REG_FAN_DEBOUNCE);
2428 if (sio_data->kind == nct6776)
2429 superio_outb(sio_data->sioreg, NCT6775_REG_FAN_DEBOUNCE,
2430 0x3e | tmp);
2431 else
2432 superio_outb(sio_data->sioreg, NCT6775_REG_FAN_DEBOUNCE,
2433 0x1e | tmp);
2434 pr_info("Enabled fan debounce for chip %s\n", data->name);
2435 }
2436
2437 w83627ehf_check_fan_inputs(sio_data, data);
2438
2439 superio_exit(sio_data->sioreg);
2440
2441 /* Read fan clock dividers immediately */
2442 w83627ehf_update_fan_div_common(dev, data);
2443
2444 /* Read pwm data to save original values */
2445 w83627ehf_update_pwm_common(dev, data);
2446 for (i = 0; i < data->pwm_num; i++)
2447 data->pwm_enable_orig[i] = data->pwm_enable[i];
2448
2449 /* Register sysfs hooks */
2450 for (i = 0; i < ARRAY_SIZE(sda_sf3_arrays); i++) {
2451 err = device_create_file(dev, &sda_sf3_arrays[i].dev_attr);
2452 if (err)
2453 goto exit_remove;
2454 }
2455
2456 for (i = 0; i < ARRAY_SIZE(sda_sf3_max_step_arrays); i++) {
2457 struct sensor_device_attribute *attr =
2458 &sda_sf3_max_step_arrays[i];
2459 if (data->REG_FAN_STEP_OUTPUT &&
2460 data->REG_FAN_STEP_OUTPUT[attr->index] != 0xff) {
2461 err = device_create_file(dev, &attr->dev_attr);
2462 if (err)
2463 goto exit_remove;
2464 }
2465 }
2466 /* if fan3 and fan4 are enabled create the sf3 files for them */
2467 if ((data->has_fan & (1 << 2)) && data->pwm_num >= 3)
2468 for (i = 0; i < ARRAY_SIZE(sda_sf3_arrays_fan3); i++) {
2469 err = device_create_file(dev,
2470 &sda_sf3_arrays_fan3[i].dev_attr);
2471 if (err)
2472 goto exit_remove;
2473 }
2474 if ((data->has_fan & (1 << 3)) && data->pwm_num >= 4)
2475 for (i = 0; i < ARRAY_SIZE(sda_sf3_arrays_fan4); i++) {
2476 err = device_create_file(dev,
2477 &sda_sf3_arrays_fan4[i].dev_attr);
2478 if (err)
2479 goto exit_remove;
2480 }
2481
2482 for (i = 0; i < data->in_num; i++) {
2483 if ((i == 6) && data->in6_skip)
2484 continue;
2485 if ((err = device_create_file(dev, &sda_in_input[i].dev_attr))
2486 || (err = device_create_file(dev,
2487 &sda_in_alarm[i].dev_attr))
2488 || (err = device_create_file(dev,
2489 &sda_in_min[i].dev_attr))
2490 || (err = device_create_file(dev,
2491 &sda_in_max[i].dev_attr)))
2492 goto exit_remove;
2493 }
2494
2495 for (i = 0; i < 5; i++) {
2496 if (data->has_fan & (1 << i)) {
2497 if ((err = device_create_file(dev,
2498 &sda_fan_input[i].dev_attr))
2499 || (err = device_create_file(dev,
2500 &sda_fan_alarm[i].dev_attr)))
2501 goto exit_remove;
2502 if (sio_data->kind != nct6776) {
2503 err = device_create_file(dev,
2504 &sda_fan_div[i].dev_attr);
2505 if (err)
2506 goto exit_remove;
2507 }
2508 if (data->has_fan_min & (1 << i)) {
2509 err = device_create_file(dev,
2510 &sda_fan_min[i].dev_attr);
2511 if (err)
2512 goto exit_remove;
2513 }
2514 if (i < data->pwm_num &&
2515 ((err = device_create_file(dev,
2516 &sda_pwm[i].dev_attr))
2517 || (err = device_create_file(dev,
2518 &sda_pwm_mode[i].dev_attr))
2519 || (err = device_create_file(dev,
2520 &sda_pwm_enable[i].dev_attr))
2521 || (err = device_create_file(dev,
2522 &sda_target_temp[i].dev_attr))
2523 || (err = device_create_file(dev,
2524 &sda_tolerance[i].dev_attr))))
2525 goto exit_remove;
2526 }
2527 }
2528
2529 for (i = 0; i < NUM_REG_TEMP; i++) {
2530 if (!(data->have_temp & (1 << i)))
2531 continue;
2532 err = device_create_file(dev, &sda_temp_input[i].dev_attr);
2533 if (err)
2534 goto exit_remove;
2535 if (data->temp_label) {
2536 err = device_create_file(dev,
2537 &sda_temp_label[i].dev_attr);
2538 if (err)
2539 goto exit_remove;
2540 }
2541 if (i == 2 && data->temp3_val_only)
2542 continue;
2543 if (data->reg_temp_over[i]) {
2544 err = device_create_file(dev,
2545 &sda_temp_max[i].dev_attr);
2546 if (err)
2547 goto exit_remove;
2548 }
2549 if (data->reg_temp_hyst[i]) {
2550 err = device_create_file(dev,
2551 &sda_temp_max_hyst[i].dev_attr);
2552 if (err)
2553 goto exit_remove;
2554 }
2555 if (i > 2)
2556 continue;
2557 if ((err = device_create_file(dev,
2558 &sda_temp_alarm[i].dev_attr))
2559 || (err = device_create_file(dev,
2560 &sda_temp_type[i].dev_attr)))
2561 goto exit_remove;
2562 if (data->have_temp_offset & (1 << i)) {
2563 err = device_create_file(dev,
2564 &sda_temp_offset[i].dev_attr);
2565 if (err)
2566 goto exit_remove;
2567 }
2568 }
2569
2570 err = device_create_file(dev, &sda_caseopen[0].dev_attr);
2571 if (err)
2572 goto exit_remove;
2573
2574 if (sio_data->kind == nct6776) {
2575 err = device_create_file(dev, &sda_caseopen[1].dev_attr);
2576 if (err)
2577 goto exit_remove;
2578 }
2579
2580 err = device_create_file(dev, &dev_attr_name);
2581 if (err)
2582 goto exit_remove;
2583
2584 data->hwmon_dev = hwmon_device_register(dev);
2585 if (IS_ERR(data->hwmon_dev)) {
2586 err = PTR_ERR(data->hwmon_dev);
2587 goto exit_remove;
2588 }
2589
2590 return 0;
2591
2592 exit_remove:
2593 w83627ehf_device_remove_files(dev);
2594 exit_release:
2595 release_region(res->start, IOREGION_LENGTH);
2596 exit:
2597 return err;
2598 }
2599
2600 static int w83627ehf_remove(struct platform_device *pdev)
2601 {
2602 struct w83627ehf_data *data = platform_get_drvdata(pdev);
2603
2604 hwmon_device_unregister(data->hwmon_dev);
2605 w83627ehf_device_remove_files(&pdev->dev);
2606 release_region(data->addr, IOREGION_LENGTH);
2607
2608 return 0;
2609 }
2610
2611 #ifdef CONFIG_PM
2612 static int w83627ehf_suspend(struct device *dev)
2613 {
2614 struct w83627ehf_data *data = w83627ehf_update_device(dev);
2615 struct w83627ehf_sio_data *sio_data = dev_get_platdata(dev);
2616
2617 mutex_lock(&data->update_lock);
2618 data->vbat = w83627ehf_read_value(data, W83627EHF_REG_VBAT);
2619 if (sio_data->kind == nct6775) {
2620 data->fandiv1 = w83627ehf_read_value(data, NCT6775_REG_FANDIV1);
2621 data->fandiv2 = w83627ehf_read_value(data, NCT6775_REG_FANDIV2);
2622 }
2623 mutex_unlock(&data->update_lock);
2624
2625 return 0;
2626 }
2627
2628 static int w83627ehf_resume(struct device *dev)
2629 {
2630 struct w83627ehf_data *data = dev_get_drvdata(dev);
2631 struct w83627ehf_sio_data *sio_data = dev_get_platdata(dev);
2632 int i;
2633
2634 mutex_lock(&data->update_lock);
2635 data->bank = 0xff; /* Force initial bank selection */
2636
2637 /* Restore limits */
2638 for (i = 0; i < data->in_num; i++) {
2639 if ((i == 6) && data->in6_skip)
2640 continue;
2641
2642 w83627ehf_write_value(data, W83627EHF_REG_IN_MIN(i),
2643 data->in_min[i]);
2644 w83627ehf_write_value(data, W83627EHF_REG_IN_MAX(i),
2645 data->in_max[i]);
2646 }
2647
2648 for (i = 0; i < 5; i++) {
2649 if (!(data->has_fan_min & (1 << i)))
2650 continue;
2651
2652 w83627ehf_write_value(data, data->REG_FAN_MIN[i],
2653 data->fan_min[i]);
2654 }
2655
2656 for (i = 0; i < NUM_REG_TEMP; i++) {
2657 if (!(data->have_temp & (1 << i)))
2658 continue;
2659
2660 if (data->reg_temp_over[i])
2661 w83627ehf_write_temp(data, data->reg_temp_over[i],
2662 data->temp_max[i]);
2663 if (data->reg_temp_hyst[i])
2664 w83627ehf_write_temp(data, data->reg_temp_hyst[i],
2665 data->temp_max_hyst[i]);
2666 if (i > 2)
2667 continue;
2668 if (data->have_temp_offset & (1 << i))
2669 w83627ehf_write_value(data,
2670 W83627EHF_REG_TEMP_OFFSET[i],
2671 data->temp_offset[i]);
2672 }
2673
2674 /* Restore other settings */
2675 w83627ehf_write_value(data, W83627EHF_REG_VBAT, data->vbat);
2676 if (sio_data->kind == nct6775) {
2677 w83627ehf_write_value(data, NCT6775_REG_FANDIV1, data->fandiv1);
2678 w83627ehf_write_value(data, NCT6775_REG_FANDIV2, data->fandiv2);
2679 }
2680
2681 /* Force re-reading all values */
2682 data->valid = 0;
2683 mutex_unlock(&data->update_lock);
2684
2685 return 0;
2686 }
2687
2688 static const struct dev_pm_ops w83627ehf_dev_pm_ops = {
2689 .suspend = w83627ehf_suspend,
2690 .resume = w83627ehf_resume,
2691 .freeze = w83627ehf_suspend,
2692 .restore = w83627ehf_resume,
2693 };
2694
2695 #define W83627EHF_DEV_PM_OPS (&w83627ehf_dev_pm_ops)
2696 #else
2697 #define W83627EHF_DEV_PM_OPS NULL
2698 #endif /* CONFIG_PM */
2699
2700 static struct platform_driver w83627ehf_driver = {
2701 .driver = {
2702 .name = DRVNAME,
2703 .pm = W83627EHF_DEV_PM_OPS,
2704 },
2705 .probe = w83627ehf_probe,
2706 .remove = w83627ehf_remove,
2707 };
2708
2709 /* w83627ehf_find() looks for a '627 in the Super-I/O config space */
2710 static int __init w83627ehf_find(int sioaddr, unsigned short *addr,
2711 struct w83627ehf_sio_data *sio_data)
2712 {
2713 static const char sio_name_W83627EHF[] __initconst = "W83627EHF";
2714 static const char sio_name_W83627EHG[] __initconst = "W83627EHG";
2715 static const char sio_name_W83627DHG[] __initconst = "W83627DHG";
2716 static const char sio_name_W83627DHG_P[] __initconst = "W83627DHG-P";
2717 static const char sio_name_W83627UHG[] __initconst = "W83627UHG";
2718 static const char sio_name_W83667HG[] __initconst = "W83667HG";
2719 static const char sio_name_W83667HG_B[] __initconst = "W83667HG-B";
2720 static const char sio_name_NCT6775[] __initconst = "NCT6775F";
2721 static const char sio_name_NCT6776[] __initconst = "NCT6776F";
2722
2723 u16 val;
2724 const char *sio_name;
2725 int err;
2726
2727 err = superio_enter(sioaddr);
2728 if (err)
2729 return err;
2730
2731 if (force_id)
2732 val = force_id;
2733 else
2734 val = (superio_inb(sioaddr, SIO_REG_DEVID) << 8)
2735 | superio_inb(sioaddr, SIO_REG_DEVID + 1);
2736 switch (val & SIO_ID_MASK) {
2737 case SIO_W83627EHF_ID:
2738 sio_data->kind = w83627ehf;
2739 sio_name = sio_name_W83627EHF;
2740 break;
2741 case SIO_W83627EHG_ID:
2742 sio_data->kind = w83627ehf;
2743 sio_name = sio_name_W83627EHG;
2744 break;
2745 case SIO_W83627DHG_ID:
2746 sio_data->kind = w83627dhg;
2747 sio_name = sio_name_W83627DHG;
2748 break;
2749 case SIO_W83627DHG_P_ID:
2750 sio_data->kind = w83627dhg_p;
2751 sio_name = sio_name_W83627DHG_P;
2752 break;
2753 case SIO_W83627UHG_ID:
2754 sio_data->kind = w83627uhg;
2755 sio_name = sio_name_W83627UHG;
2756 break;
2757 case SIO_W83667HG_ID:
2758 sio_data->kind = w83667hg;
2759 sio_name = sio_name_W83667HG;
2760 break;
2761 case SIO_W83667HG_B_ID:
2762 sio_data->kind = w83667hg_b;
2763 sio_name = sio_name_W83667HG_B;
2764 break;
2765 case SIO_NCT6775_ID:
2766 sio_data->kind = nct6775;
2767 sio_name = sio_name_NCT6775;
2768 break;
2769 case SIO_NCT6776_ID:
2770 sio_data->kind = nct6776;
2771 sio_name = sio_name_NCT6776;
2772 break;
2773 default:
2774 if (val != 0xffff)
2775 pr_debug("unsupported chip ID: 0x%04x\n", val);
2776 superio_exit(sioaddr);
2777 return -ENODEV;
2778 }
2779
2780 /* We have a known chip, find the HWM I/O address */
2781 superio_select(sioaddr, W83627EHF_LD_HWM);
2782 val = (superio_inb(sioaddr, SIO_REG_ADDR) << 8)
2783 | superio_inb(sioaddr, SIO_REG_ADDR + 1);
2784 *addr = val & IOREGION_ALIGNMENT;
2785 if (*addr == 0) {
2786 pr_err("Refusing to enable a Super-I/O device with a base I/O port 0\n");
2787 superio_exit(sioaddr);
2788 return -ENODEV;
2789 }
2790
2791 /* Activate logical device if needed */
2792 val = superio_inb(sioaddr, SIO_REG_ENABLE);
2793 if (!(val & 0x01)) {
2794 pr_warn("Forcibly enabling Super-I/O. Sensor is probably unusable.\n");
2795 superio_outb(sioaddr, SIO_REG_ENABLE, val | 0x01);
2796 }
2797
2798 superio_exit(sioaddr);
2799 pr_info("Found %s chip at %#x\n", sio_name, *addr);
2800 sio_data->sioreg = sioaddr;
2801
2802 return 0;
2803 }
2804
2805 /*
2806 * when Super-I/O functions move to a separate file, the Super-I/O
2807 * bus will manage the lifetime of the device and this module will only keep
2808 * track of the w83627ehf driver. But since we platform_device_alloc(), we
2809 * must keep track of the device
2810 */
2811 static struct platform_device *pdev;
2812
2813 static int __init sensors_w83627ehf_init(void)
2814 {
2815 int err;
2816 unsigned short address;
2817 struct resource res;
2818 struct w83627ehf_sio_data sio_data;
2819
2820 /*
2821 * initialize sio_data->kind and sio_data->sioreg.
2822 *
2823 * when Super-I/O functions move to a separate file, the Super-I/O
2824 * driver will probe 0x2e and 0x4e and auto-detect the presence of a
2825 * w83627ehf hardware monitor, and call probe()
2826 */
2827 if (w83627ehf_find(0x2e, &address, &sio_data) &&
2828 w83627ehf_find(0x4e, &address, &sio_data))
2829 return -ENODEV;
2830
2831 err = platform_driver_register(&w83627ehf_driver);
2832 if (err)
2833 goto exit;
2834
2835 pdev = platform_device_alloc(DRVNAME, address);
2836 if (!pdev) {
2837 err = -ENOMEM;
2838 pr_err("Device allocation failed\n");
2839 goto exit_unregister;
2840 }
2841
2842 err = platform_device_add_data(pdev, &sio_data,
2843 sizeof(struct w83627ehf_sio_data));
2844 if (err) {
2845 pr_err("Platform data allocation failed\n");
2846 goto exit_device_put;
2847 }
2848
2849 memset(&res, 0, sizeof(res));
2850 res.name = DRVNAME;
2851 res.start = address + IOREGION_OFFSET;
2852 res.end = address + IOREGION_OFFSET + IOREGION_LENGTH - 1;
2853 res.flags = IORESOURCE_IO;
2854
2855 err = acpi_check_resource_conflict(&res);
2856 if (err)
2857 goto exit_device_put;
2858
2859 err = platform_device_add_resources(pdev, &res, 1);
2860 if (err) {
2861 pr_err("Device resource addition failed (%d)\n", err);
2862 goto exit_device_put;
2863 }
2864
2865 /* platform_device_add calls probe() */
2866 err = platform_device_add(pdev);
2867 if (err) {
2868 pr_err("Device addition failed (%d)\n", err);
2869 goto exit_device_put;
2870 }
2871
2872 return 0;
2873
2874 exit_device_put:
2875 platform_device_put(pdev);
2876 exit_unregister:
2877 platform_driver_unregister(&w83627ehf_driver);
2878 exit:
2879 return err;
2880 }
2881
2882 static void __exit sensors_w83627ehf_exit(void)
2883 {
2884 platform_device_unregister(pdev);
2885 platform_driver_unregister(&w83627ehf_driver);
2886 }
2887
2888 MODULE_AUTHOR("Jean Delvare <jdelvare@suse.de>");
2889 MODULE_DESCRIPTION("W83627EHF driver");
2890 MODULE_LICENSE("GPL");
2891
2892 module_init(sensors_w83627ehf_init);
2893 module_exit(sensors_w83627ehf_exit);
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