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Merge branches 'acpi-processor', 'acpi-hotplug' and 'acpi-battery'
[deliverable/linux.git] / drivers / hwmon / nct6775.c
1 /*
2 * nct6775 - Driver for the hardware monitoring functionality of
3 * Nuvoton NCT677x Super-I/O chips
4 *
5 * Copyright (C) 2012 Guenter Roeck <linux@roeck-us.net>
6 *
7 * Derived from w83627ehf driver
8 * Copyright (C) 2005-2012 Jean Delvare <jdelvare@suse.de>
9 * Copyright (C) 2006 Yuan Mu (Winbond),
10 * Rudolf Marek <r.marek@assembler.cz>
11 * David Hubbard <david.c.hubbard@gmail.com>
12 * Daniel J Blueman <daniel.blueman@gmail.com>
13 * Copyright (C) 2010 Sheng-Yuan Huang (Nuvoton) (PS00)
14 *
15 * Shamelessly ripped from the w83627hf driver
16 * Copyright (C) 2003 Mark Studebaker
17 *
18 * This program is free software; you can redistribute it and/or modify
19 * it under the terms of the GNU General Public License as published by
20 * the Free Software Foundation; either version 2 of the License, or
21 * (at your option) any later version.
22 *
23 * This program is distributed in the hope that it will be useful,
24 * but WITHOUT ANY WARRANTY; without even the implied warranty of
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
26 * GNU General Public License for more details.
27 *
28 * You should have received a copy of the GNU General Public License
29 * along with this program; if not, write to the Free Software
30 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
31 *
32 *
33 * Supports the following chips:
34 *
35 * Chip #vin #fan #pwm #temp chip IDs man ID
36 * nct6106d 9 3 3 6+3 0xc450 0xc1 0x5ca3
37 * nct6775f 9 4 3 6+3 0xb470 0xc1 0x5ca3
38 * nct6776f 9 5 3 6+3 0xc330 0xc1 0x5ca3
39 * nct6779d 15 5 5 2+6 0xc560 0xc1 0x5ca3
40 * nct6791d 15 6 6 2+6 0xc800 0xc1 0x5ca3
41 *
42 * #temp lists the number of monitored temperature sources (first value) plus
43 * the number of directly connectable temperature sensors (second value).
44 */
45
46 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
47
48 #include <linux/module.h>
49 #include <linux/init.h>
50 #include <linux/slab.h>
51 #include <linux/jiffies.h>
52 #include <linux/platform_device.h>
53 #include <linux/hwmon.h>
54 #include <linux/hwmon-sysfs.h>
55 #include <linux/hwmon-vid.h>
56 #include <linux/err.h>
57 #include <linux/mutex.h>
58 #include <linux/acpi.h>
59 #include <linux/io.h>
60 #include "lm75.h"
61
62 #define USE_ALTERNATE
63
64 enum kinds { nct6106, nct6775, nct6776, nct6779, nct6791 };
65
66 /* used to set data->name = nct6775_device_names[data->sio_kind] */
67 static const char * const nct6775_device_names[] = {
68 "nct6106",
69 "nct6775",
70 "nct6776",
71 "nct6779",
72 "nct6791",
73 };
74
75 static unsigned short force_id;
76 module_param(force_id, ushort, 0);
77 MODULE_PARM_DESC(force_id, "Override the detected device ID");
78
79 static unsigned short fan_debounce;
80 module_param(fan_debounce, ushort, 0);
81 MODULE_PARM_DESC(fan_debounce, "Enable debouncing for fan RPM signal");
82
83 #define DRVNAME "nct6775"
84
85 /*
86 * Super-I/O constants and functions
87 */
88
89 #define NCT6775_LD_ACPI 0x0a
90 #define NCT6775_LD_HWM 0x0b
91 #define NCT6775_LD_VID 0x0d
92
93 #define SIO_REG_LDSEL 0x07 /* Logical device select */
94 #define SIO_REG_DEVID 0x20 /* Device ID (2 bytes) */
95 #define SIO_REG_ENABLE 0x30 /* Logical device enable */
96 #define SIO_REG_ADDR 0x60 /* Logical device address (2 bytes) */
97
98 #define SIO_NCT6106_ID 0xc450
99 #define SIO_NCT6775_ID 0xb470
100 #define SIO_NCT6776_ID 0xc330
101 #define SIO_NCT6779_ID 0xc560
102 #define SIO_NCT6791_ID 0xc800
103 #define SIO_ID_MASK 0xFFF0
104
105 enum pwm_enable { off, manual, thermal_cruise, speed_cruise, sf3, sf4 };
106
107 static inline void
108 superio_outb(int ioreg, int reg, int val)
109 {
110 outb(reg, ioreg);
111 outb(val, ioreg + 1);
112 }
113
114 static inline int
115 superio_inb(int ioreg, int reg)
116 {
117 outb(reg, ioreg);
118 return inb(ioreg + 1);
119 }
120
121 static inline void
122 superio_select(int ioreg, int ld)
123 {
124 outb(SIO_REG_LDSEL, ioreg);
125 outb(ld, ioreg + 1);
126 }
127
128 static inline int
129 superio_enter(int ioreg)
130 {
131 /*
132 * Try to reserve <ioreg> and <ioreg + 1> for exclusive access.
133 */
134 if (!request_muxed_region(ioreg, 2, DRVNAME))
135 return -EBUSY;
136
137 outb(0x87, ioreg);
138 outb(0x87, ioreg);
139
140 return 0;
141 }
142
143 static inline void
144 superio_exit(int ioreg)
145 {
146 outb(0xaa, ioreg);
147 outb(0x02, ioreg);
148 outb(0x02, ioreg + 1);
149 release_region(ioreg, 2);
150 }
151
152 /*
153 * ISA constants
154 */
155
156 #define IOREGION_ALIGNMENT (~7)
157 #define IOREGION_OFFSET 5
158 #define IOREGION_LENGTH 2
159 #define ADDR_REG_OFFSET 0
160 #define DATA_REG_OFFSET 1
161
162 #define NCT6775_REG_BANK 0x4E
163 #define NCT6775_REG_CONFIG 0x40
164
165 /*
166 * Not currently used:
167 * REG_MAN_ID has the value 0x5ca3 for all supported chips.
168 * REG_CHIP_ID == 0x88/0xa1/0xc1 depending on chip model.
169 * REG_MAN_ID is at port 0x4f
170 * REG_CHIP_ID is at port 0x58
171 */
172
173 #define NUM_TEMP 10 /* Max number of temp attribute sets w/ limits*/
174 #define NUM_TEMP_FIXED 6 /* Max number of fixed temp attribute sets */
175
176 #define NUM_REG_ALARM 7 /* Max number of alarm registers */
177 #define NUM_REG_BEEP 5 /* Max number of beep registers */
178
179 #define NUM_FAN 6
180
181 /* Common and NCT6775 specific data */
182
183 /* Voltage min/max registers for nr=7..14 are in bank 5 */
184
185 static const u16 NCT6775_REG_IN_MAX[] = {
186 0x2b, 0x2d, 0x2f, 0x31, 0x33, 0x35, 0x37, 0x554, 0x556, 0x558, 0x55a,
187 0x55c, 0x55e, 0x560, 0x562 };
188 static const u16 NCT6775_REG_IN_MIN[] = {
189 0x2c, 0x2e, 0x30, 0x32, 0x34, 0x36, 0x38, 0x555, 0x557, 0x559, 0x55b,
190 0x55d, 0x55f, 0x561, 0x563 };
191 static const u16 NCT6775_REG_IN[] = {
192 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x550, 0x551, 0x552
193 };
194
195 #define NCT6775_REG_VBAT 0x5D
196 #define NCT6775_REG_DIODE 0x5E
197 #define NCT6775_DIODE_MASK 0x02
198
199 #define NCT6775_REG_FANDIV1 0x506
200 #define NCT6775_REG_FANDIV2 0x507
201
202 #define NCT6775_REG_CR_FAN_DEBOUNCE 0xf0
203
204 static const u16 NCT6775_REG_ALARM[NUM_REG_ALARM] = { 0x459, 0x45A, 0x45B };
205
206 /* 0..15 voltages, 16..23 fans, 24..29 temperatures, 30..31 intrusion */
207
208 static const s8 NCT6775_ALARM_BITS[] = {
209 0, 1, 2, 3, 8, 21, 20, 16, /* in0.. in7 */
210 17, -1, -1, -1, -1, -1, -1, /* in8..in14 */
211 -1, /* unused */
212 6, 7, 11, -1, -1, /* fan1..fan5 */
213 -1, -1, -1, /* unused */
214 4, 5, 13, -1, -1, -1, /* temp1..temp6 */
215 12, -1 }; /* intrusion0, intrusion1 */
216
217 #define FAN_ALARM_BASE 16
218 #define TEMP_ALARM_BASE 24
219 #define INTRUSION_ALARM_BASE 30
220
221 static const u16 NCT6775_REG_BEEP[NUM_REG_BEEP] = { 0x56, 0x57, 0x453, 0x4e };
222
223 /*
224 * 0..14 voltages, 15 global beep enable, 16..23 fans, 24..29 temperatures,
225 * 30..31 intrusion
226 */
227 static const s8 NCT6775_BEEP_BITS[] = {
228 0, 1, 2, 3, 8, 9, 10, 16, /* in0.. in7 */
229 17, -1, -1, -1, -1, -1, -1, /* in8..in14 */
230 21, /* global beep enable */
231 6, 7, 11, 28, -1, /* fan1..fan5 */
232 -1, -1, -1, /* unused */
233 4, 5, 13, -1, -1, -1, /* temp1..temp6 */
234 12, -1 }; /* intrusion0, intrusion1 */
235
236 #define BEEP_ENABLE_BASE 15
237
238 static const u8 NCT6775_REG_CR_CASEOPEN_CLR[] = { 0xe6, 0xee };
239 static const u8 NCT6775_CR_CASEOPEN_CLR_MASK[] = { 0x20, 0x01 };
240
241 /* DC or PWM output fan configuration */
242 static const u8 NCT6775_REG_PWM_MODE[] = { 0x04, 0x04, 0x12 };
243 static const u8 NCT6775_PWM_MODE_MASK[] = { 0x01, 0x02, 0x01 };
244
245 /* Advanced Fan control, some values are common for all fans */
246
247 static const u16 NCT6775_REG_TARGET[] = {
248 0x101, 0x201, 0x301, 0x801, 0x901, 0xa01 };
249 static const u16 NCT6775_REG_FAN_MODE[] = {
250 0x102, 0x202, 0x302, 0x802, 0x902, 0xa02 };
251 static const u16 NCT6775_REG_FAN_STEP_DOWN_TIME[] = {
252 0x103, 0x203, 0x303, 0x803, 0x903, 0xa03 };
253 static const u16 NCT6775_REG_FAN_STEP_UP_TIME[] = {
254 0x104, 0x204, 0x304, 0x804, 0x904, 0xa04 };
255 static const u16 NCT6775_REG_FAN_STOP_OUTPUT[] = {
256 0x105, 0x205, 0x305, 0x805, 0x905, 0xa05 };
257 static const u16 NCT6775_REG_FAN_START_OUTPUT[] = {
258 0x106, 0x206, 0x306, 0x806, 0x906, 0xa06 };
259 static const u16 NCT6775_REG_FAN_MAX_OUTPUT[] = { 0x10a, 0x20a, 0x30a };
260 static const u16 NCT6775_REG_FAN_STEP_OUTPUT[] = { 0x10b, 0x20b, 0x30b };
261
262 static const u16 NCT6775_REG_FAN_STOP_TIME[] = {
263 0x107, 0x207, 0x307, 0x807, 0x907, 0xa07 };
264 static const u16 NCT6775_REG_PWM[] = {
265 0x109, 0x209, 0x309, 0x809, 0x909, 0xa09 };
266 static const u16 NCT6775_REG_PWM_READ[] = {
267 0x01, 0x03, 0x11, 0x13, 0x15, 0xa09 };
268
269 static const u16 NCT6775_REG_FAN[] = { 0x630, 0x632, 0x634, 0x636, 0x638 };
270 static const u16 NCT6775_REG_FAN_MIN[] = { 0x3b, 0x3c, 0x3d };
271 static const u16 NCT6775_REG_FAN_PULSES[] = { 0x641, 0x642, 0x643, 0x644, 0 };
272 static const u16 NCT6775_FAN_PULSE_SHIFT[] = { 0, 0, 0, 0, 0, 0 };
273
274 static const u16 NCT6775_REG_TEMP[] = {
275 0x27, 0x150, 0x250, 0x62b, 0x62c, 0x62d };
276
277 static const u16 NCT6775_REG_TEMP_MON[] = { 0x73, 0x75, 0x77 };
278
279 static const u16 NCT6775_REG_TEMP_CONFIG[ARRAY_SIZE(NCT6775_REG_TEMP)] = {
280 0, 0x152, 0x252, 0x628, 0x629, 0x62A };
281 static const u16 NCT6775_REG_TEMP_HYST[ARRAY_SIZE(NCT6775_REG_TEMP)] = {
282 0x3a, 0x153, 0x253, 0x673, 0x678, 0x67D };
283 static const u16 NCT6775_REG_TEMP_OVER[ARRAY_SIZE(NCT6775_REG_TEMP)] = {
284 0x39, 0x155, 0x255, 0x672, 0x677, 0x67C };
285
286 static const u16 NCT6775_REG_TEMP_SOURCE[ARRAY_SIZE(NCT6775_REG_TEMP)] = {
287 0x621, 0x622, 0x623, 0x624, 0x625, 0x626 };
288
289 static const u16 NCT6775_REG_TEMP_SEL[] = {
290 0x100, 0x200, 0x300, 0x800, 0x900, 0xa00 };
291
292 static const u16 NCT6775_REG_WEIGHT_TEMP_SEL[] = {
293 0x139, 0x239, 0x339, 0x839, 0x939, 0xa39 };
294 static const u16 NCT6775_REG_WEIGHT_TEMP_STEP[] = {
295 0x13a, 0x23a, 0x33a, 0x83a, 0x93a, 0xa3a };
296 static const u16 NCT6775_REG_WEIGHT_TEMP_STEP_TOL[] = {
297 0x13b, 0x23b, 0x33b, 0x83b, 0x93b, 0xa3b };
298 static const u16 NCT6775_REG_WEIGHT_DUTY_STEP[] = {
299 0x13c, 0x23c, 0x33c, 0x83c, 0x93c, 0xa3c };
300 static const u16 NCT6775_REG_WEIGHT_TEMP_BASE[] = {
301 0x13d, 0x23d, 0x33d, 0x83d, 0x93d, 0xa3d };
302
303 static const u16 NCT6775_REG_TEMP_OFFSET[] = { 0x454, 0x455, 0x456 };
304
305 static const u16 NCT6775_REG_AUTO_TEMP[] = {
306 0x121, 0x221, 0x321, 0x821, 0x921, 0xa21 };
307 static const u16 NCT6775_REG_AUTO_PWM[] = {
308 0x127, 0x227, 0x327, 0x827, 0x927, 0xa27 };
309
310 #define NCT6775_AUTO_TEMP(data, nr, p) ((data)->REG_AUTO_TEMP[nr] + (p))
311 #define NCT6775_AUTO_PWM(data, nr, p) ((data)->REG_AUTO_PWM[nr] + (p))
312
313 static const u16 NCT6775_REG_CRITICAL_ENAB[] = { 0x134, 0x234, 0x334 };
314
315 static const u16 NCT6775_REG_CRITICAL_TEMP[] = {
316 0x135, 0x235, 0x335, 0x835, 0x935, 0xa35 };
317 static const u16 NCT6775_REG_CRITICAL_TEMP_TOLERANCE[] = {
318 0x138, 0x238, 0x338, 0x838, 0x938, 0xa38 };
319
320 static const char *const nct6775_temp_label[] = {
321 "",
322 "SYSTIN",
323 "CPUTIN",
324 "AUXTIN",
325 "AMD SB-TSI",
326 "PECI Agent 0",
327 "PECI Agent 1",
328 "PECI Agent 2",
329 "PECI Agent 3",
330 "PECI Agent 4",
331 "PECI Agent 5",
332 "PECI Agent 6",
333 "PECI Agent 7",
334 "PCH_CHIP_CPU_MAX_TEMP",
335 "PCH_CHIP_TEMP",
336 "PCH_CPU_TEMP",
337 "PCH_MCH_TEMP",
338 "PCH_DIM0_TEMP",
339 "PCH_DIM1_TEMP",
340 "PCH_DIM2_TEMP",
341 "PCH_DIM3_TEMP"
342 };
343
344 static const u16 NCT6775_REG_TEMP_ALTERNATE[ARRAY_SIZE(nct6775_temp_label) - 1]
345 = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x661, 0x662, 0x664 };
346
347 static const u16 NCT6775_REG_TEMP_CRIT[ARRAY_SIZE(nct6775_temp_label) - 1]
348 = { 0, 0, 0, 0, 0xa00, 0xa01, 0xa02, 0xa03, 0xa04, 0xa05, 0xa06,
349 0xa07 };
350
351 /* NCT6776 specific data */
352
353 static const s8 NCT6776_ALARM_BITS[] = {
354 0, 1, 2, 3, 8, 21, 20, 16, /* in0.. in7 */
355 17, -1, -1, -1, -1, -1, -1, /* in8..in14 */
356 -1, /* unused */
357 6, 7, 11, 10, 23, /* fan1..fan5 */
358 -1, -1, -1, /* unused */
359 4, 5, 13, -1, -1, -1, /* temp1..temp6 */
360 12, 9 }; /* intrusion0, intrusion1 */
361
362 static const u16 NCT6776_REG_BEEP[NUM_REG_BEEP] = { 0xb2, 0xb3, 0xb4, 0xb5 };
363
364 static const s8 NCT6776_BEEP_BITS[] = {
365 0, 1, 2, 3, 4, 5, 6, 7, /* in0.. in7 */
366 8, -1, -1, -1, -1, -1, -1, /* in8..in14 */
367 24, /* global beep enable */
368 25, 26, 27, 28, 29, /* fan1..fan5 */
369 -1, -1, -1, /* unused */
370 16, 17, 18, 19, 20, 21, /* temp1..temp6 */
371 30, 31 }; /* intrusion0, intrusion1 */
372
373 static const u16 NCT6776_REG_TOLERANCE_H[] = {
374 0x10c, 0x20c, 0x30c, 0x80c, 0x90c, 0xa0c };
375
376 static const u8 NCT6776_REG_PWM_MODE[] = { 0x04, 0, 0, 0, 0, 0 };
377 static const u8 NCT6776_PWM_MODE_MASK[] = { 0x01, 0, 0, 0, 0, 0 };
378
379 static const u16 NCT6776_REG_FAN_MIN[] = { 0x63a, 0x63c, 0x63e, 0x640, 0x642 };
380 static const u16 NCT6776_REG_FAN_PULSES[] = { 0x644, 0x645, 0x646, 0, 0 };
381
382 static const u16 NCT6776_REG_WEIGHT_DUTY_BASE[] = {
383 0x13e, 0x23e, 0x33e, 0x83e, 0x93e, 0xa3e };
384
385 static const u16 NCT6776_REG_TEMP_CONFIG[ARRAY_SIZE(NCT6775_REG_TEMP)] = {
386 0x18, 0x152, 0x252, 0x628, 0x629, 0x62A };
387
388 static const char *const nct6776_temp_label[] = {
389 "",
390 "SYSTIN",
391 "CPUTIN",
392 "AUXTIN",
393 "SMBUSMASTER 0",
394 "SMBUSMASTER 1",
395 "SMBUSMASTER 2",
396 "SMBUSMASTER 3",
397 "SMBUSMASTER 4",
398 "SMBUSMASTER 5",
399 "SMBUSMASTER 6",
400 "SMBUSMASTER 7",
401 "PECI Agent 0",
402 "PECI Agent 1",
403 "PCH_CHIP_CPU_MAX_TEMP",
404 "PCH_CHIP_TEMP",
405 "PCH_CPU_TEMP",
406 "PCH_MCH_TEMP",
407 "PCH_DIM0_TEMP",
408 "PCH_DIM1_TEMP",
409 "PCH_DIM2_TEMP",
410 "PCH_DIM3_TEMP",
411 "BYTE_TEMP"
412 };
413
414 static const u16 NCT6776_REG_TEMP_ALTERNATE[ARRAY_SIZE(nct6776_temp_label) - 1]
415 = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x401, 0x402, 0x404 };
416
417 static const u16 NCT6776_REG_TEMP_CRIT[ARRAY_SIZE(nct6776_temp_label) - 1]
418 = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x709, 0x70a };
419
420 /* NCT6779 specific data */
421
422 static const u16 NCT6779_REG_IN[] = {
423 0x480, 0x481, 0x482, 0x483, 0x484, 0x485, 0x486, 0x487,
424 0x488, 0x489, 0x48a, 0x48b, 0x48c, 0x48d, 0x48e };
425
426 static const u16 NCT6779_REG_ALARM[NUM_REG_ALARM] = {
427 0x459, 0x45A, 0x45B, 0x568 };
428
429 static const s8 NCT6779_ALARM_BITS[] = {
430 0, 1, 2, 3, 8, 21, 20, 16, /* in0.. in7 */
431 17, 24, 25, 26, 27, 28, 29, /* in8..in14 */
432 -1, /* unused */
433 6, 7, 11, 10, 23, /* fan1..fan5 */
434 -1, -1, -1, /* unused */
435 4, 5, 13, -1, -1, -1, /* temp1..temp6 */
436 12, 9 }; /* intrusion0, intrusion1 */
437
438 static const s8 NCT6779_BEEP_BITS[] = {
439 0, 1, 2, 3, 4, 5, 6, 7, /* in0.. in7 */
440 8, 9, 10, 11, 12, 13, 14, /* in8..in14 */
441 24, /* global beep enable */
442 25, 26, 27, 28, 29, /* fan1..fan5 */
443 -1, -1, -1, /* unused */
444 16, 17, -1, -1, -1, -1, /* temp1..temp6 */
445 30, 31 }; /* intrusion0, intrusion1 */
446
447 static const u16 NCT6779_REG_FAN[] = {
448 0x4b0, 0x4b2, 0x4b4, 0x4b6, 0x4b8, 0x4ba };
449 static const u16 NCT6779_REG_FAN_PULSES[] = {
450 0x644, 0x645, 0x646, 0x647, 0x648, 0x649 };
451
452 static const u16 NCT6779_REG_CRITICAL_PWM_ENABLE[] = {
453 0x136, 0x236, 0x336, 0x836, 0x936, 0xa36 };
454 #define NCT6779_CRITICAL_PWM_ENABLE_MASK 0x01
455 static const u16 NCT6779_REG_CRITICAL_PWM[] = {
456 0x137, 0x237, 0x337, 0x837, 0x937, 0xa37 };
457
458 static const u16 NCT6779_REG_TEMP[] = { 0x27, 0x150 };
459 static const u16 NCT6779_REG_TEMP_MON[] = { 0x73, 0x75, 0x77, 0x79, 0x7b };
460 static const u16 NCT6779_REG_TEMP_CONFIG[ARRAY_SIZE(NCT6779_REG_TEMP)] = {
461 0x18, 0x152 };
462 static const u16 NCT6779_REG_TEMP_HYST[ARRAY_SIZE(NCT6779_REG_TEMP)] = {
463 0x3a, 0x153 };
464 static const u16 NCT6779_REG_TEMP_OVER[ARRAY_SIZE(NCT6779_REG_TEMP)] = {
465 0x39, 0x155 };
466
467 static const u16 NCT6779_REG_TEMP_OFFSET[] = {
468 0x454, 0x455, 0x456, 0x44a, 0x44b, 0x44c };
469
470 static const char *const nct6779_temp_label[] = {
471 "",
472 "SYSTIN",
473 "CPUTIN",
474 "AUXTIN0",
475 "AUXTIN1",
476 "AUXTIN2",
477 "AUXTIN3",
478 "",
479 "SMBUSMASTER 0",
480 "SMBUSMASTER 1",
481 "SMBUSMASTER 2",
482 "SMBUSMASTER 3",
483 "SMBUSMASTER 4",
484 "SMBUSMASTER 5",
485 "SMBUSMASTER 6",
486 "SMBUSMASTER 7",
487 "PECI Agent 0",
488 "PECI Agent 1",
489 "PCH_CHIP_CPU_MAX_TEMP",
490 "PCH_CHIP_TEMP",
491 "PCH_CPU_TEMP",
492 "PCH_MCH_TEMP",
493 "PCH_DIM0_TEMP",
494 "PCH_DIM1_TEMP",
495 "PCH_DIM2_TEMP",
496 "PCH_DIM3_TEMP",
497 "BYTE_TEMP"
498 };
499
500 static const u16 NCT6779_REG_TEMP_ALTERNATE[ARRAY_SIZE(nct6779_temp_label) - 1]
501 = { 0x490, 0x491, 0x492, 0x493, 0x494, 0x495, 0, 0,
502 0, 0, 0, 0, 0, 0, 0, 0,
503 0, 0x400, 0x401, 0x402, 0x404, 0x405, 0x406, 0x407,
504 0x408, 0 };
505
506 static const u16 NCT6779_REG_TEMP_CRIT[ARRAY_SIZE(nct6779_temp_label) - 1]
507 = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x709, 0x70a };
508
509 /* NCT6791 specific data */
510
511 #define NCT6791_REG_HM_IO_SPACE_LOCK_ENABLE 0x28
512
513 static const u16 NCT6791_REG_WEIGHT_TEMP_SEL[6] = { 0, 0x239 };
514 static const u16 NCT6791_REG_WEIGHT_TEMP_STEP[6] = { 0, 0x23a };
515 static const u16 NCT6791_REG_WEIGHT_TEMP_STEP_TOL[6] = { 0, 0x23b };
516 static const u16 NCT6791_REG_WEIGHT_DUTY_STEP[6] = { 0, 0x23c };
517 static const u16 NCT6791_REG_WEIGHT_TEMP_BASE[6] = { 0, 0x23d };
518 static const u16 NCT6791_REG_WEIGHT_DUTY_BASE[6] = { 0, 0x23e };
519
520 static const u16 NCT6791_REG_ALARM[NUM_REG_ALARM] = {
521 0x459, 0x45A, 0x45B, 0x568, 0x45D };
522
523 static const s8 NCT6791_ALARM_BITS[] = {
524 0, 1, 2, 3, 8, 21, 20, 16, /* in0.. in7 */
525 17, 24, 25, 26, 27, 28, 29, /* in8..in14 */
526 -1, /* unused */
527 6, 7, 11, 10, 23, 33, /* fan1..fan6 */
528 -1, -1, /* unused */
529 4, 5, 13, -1, -1, -1, /* temp1..temp6 */
530 12, 9 }; /* intrusion0, intrusion1 */
531
532
533 /* NCT6102D/NCT6106D specific data */
534
535 #define NCT6106_REG_VBAT 0x318
536 #define NCT6106_REG_DIODE 0x319
537 #define NCT6106_DIODE_MASK 0x01
538
539 static const u16 NCT6106_REG_IN_MAX[] = {
540 0x90, 0x92, 0x94, 0x96, 0x98, 0x9a, 0x9e, 0xa0, 0xa2 };
541 static const u16 NCT6106_REG_IN_MIN[] = {
542 0x91, 0x93, 0x95, 0x97, 0x99, 0x9b, 0x9f, 0xa1, 0xa3 };
543 static const u16 NCT6106_REG_IN[] = {
544 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x07, 0x08, 0x09 };
545
546 static const u16 NCT6106_REG_TEMP[] = { 0x10, 0x11, 0x12, 0x13, 0x14, 0x15 };
547 static const u16 NCT6106_REG_TEMP_MON[] = { 0x18, 0x19, 0x1a };
548 static const u16 NCT6106_REG_TEMP_HYST[] = {
549 0xc3, 0xc7, 0xcb, 0xcf, 0xd3, 0xd7 };
550 static const u16 NCT6106_REG_TEMP_OVER[] = {
551 0xc2, 0xc6, 0xca, 0xce, 0xd2, 0xd6 };
552 static const u16 NCT6106_REG_TEMP_CRIT_L[] = {
553 0xc0, 0xc4, 0xc8, 0xcc, 0xd0, 0xd4 };
554 static const u16 NCT6106_REG_TEMP_CRIT_H[] = {
555 0xc1, 0xc5, 0xc9, 0xcf, 0xd1, 0xd5 };
556 static const u16 NCT6106_REG_TEMP_OFFSET[] = { 0x311, 0x312, 0x313 };
557 static const u16 NCT6106_REG_TEMP_CONFIG[] = {
558 0xb7, 0xb8, 0xb9, 0xba, 0xbb, 0xbc };
559
560 static const u16 NCT6106_REG_FAN[] = { 0x20, 0x22, 0x24 };
561 static const u16 NCT6106_REG_FAN_MIN[] = { 0xe0, 0xe2, 0xe4 };
562 static const u16 NCT6106_REG_FAN_PULSES[] = { 0xf6, 0xf6, 0xf6, 0, 0 };
563 static const u16 NCT6106_FAN_PULSE_SHIFT[] = { 0, 2, 4, 0, 0 };
564
565 static const u8 NCT6106_REG_PWM_MODE[] = { 0xf3, 0xf3, 0xf3 };
566 static const u8 NCT6106_PWM_MODE_MASK[] = { 0x01, 0x02, 0x04 };
567 static const u16 NCT6106_REG_PWM[] = { 0x119, 0x129, 0x139 };
568 static const u16 NCT6106_REG_PWM_READ[] = { 0x4a, 0x4b, 0x4c };
569 static const u16 NCT6106_REG_FAN_MODE[] = { 0x113, 0x123, 0x133 };
570 static const u16 NCT6106_REG_TEMP_SEL[] = { 0x110, 0x120, 0x130 };
571 static const u16 NCT6106_REG_TEMP_SOURCE[] = {
572 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5 };
573
574 static const u16 NCT6106_REG_CRITICAL_TEMP[] = { 0x11a, 0x12a, 0x13a };
575 static const u16 NCT6106_REG_CRITICAL_TEMP_TOLERANCE[] = {
576 0x11b, 0x12b, 0x13b };
577
578 static const u16 NCT6106_REG_CRITICAL_PWM_ENABLE[] = { 0x11c, 0x12c, 0x13c };
579 #define NCT6106_CRITICAL_PWM_ENABLE_MASK 0x10
580 static const u16 NCT6106_REG_CRITICAL_PWM[] = { 0x11d, 0x12d, 0x13d };
581
582 static const u16 NCT6106_REG_FAN_STEP_UP_TIME[] = { 0x114, 0x124, 0x134 };
583 static const u16 NCT6106_REG_FAN_STEP_DOWN_TIME[] = { 0x115, 0x125, 0x135 };
584 static const u16 NCT6106_REG_FAN_STOP_OUTPUT[] = { 0x116, 0x126, 0x136 };
585 static const u16 NCT6106_REG_FAN_START_OUTPUT[] = { 0x117, 0x127, 0x137 };
586 static const u16 NCT6106_REG_FAN_STOP_TIME[] = { 0x118, 0x128, 0x138 };
587 static const u16 NCT6106_REG_TOLERANCE_H[] = { 0x112, 0x122, 0x132 };
588
589 static const u16 NCT6106_REG_TARGET[] = { 0x111, 0x121, 0x131 };
590
591 static const u16 NCT6106_REG_WEIGHT_TEMP_SEL[] = { 0x168, 0x178, 0x188 };
592 static const u16 NCT6106_REG_WEIGHT_TEMP_STEP[] = { 0x169, 0x179, 0x189 };
593 static const u16 NCT6106_REG_WEIGHT_TEMP_STEP_TOL[] = { 0x16a, 0x17a, 0x18a };
594 static const u16 NCT6106_REG_WEIGHT_DUTY_STEP[] = { 0x16b, 0x17b, 0x17c };
595 static const u16 NCT6106_REG_WEIGHT_TEMP_BASE[] = { 0x16c, 0x17c, 0x18c };
596 static const u16 NCT6106_REG_WEIGHT_DUTY_BASE[] = { 0x16d, 0x17d, 0x18d };
597
598 static const u16 NCT6106_REG_AUTO_TEMP[] = { 0x160, 0x170, 0x180 };
599 static const u16 NCT6106_REG_AUTO_PWM[] = { 0x164, 0x174, 0x184 };
600
601 static const u16 NCT6106_REG_ALARM[NUM_REG_ALARM] = {
602 0x77, 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d };
603
604 static const s8 NCT6106_ALARM_BITS[] = {
605 0, 1, 2, 3, 4, 5, 7, 8, /* in0.. in7 */
606 9, -1, -1, -1, -1, -1, -1, /* in8..in14 */
607 -1, /* unused */
608 32, 33, 34, -1, -1, /* fan1..fan5 */
609 -1, -1, -1, /* unused */
610 16, 17, 18, 19, 20, 21, /* temp1..temp6 */
611 48, -1 /* intrusion0, intrusion1 */
612 };
613
614 static const u16 NCT6106_REG_BEEP[NUM_REG_BEEP] = {
615 0x3c0, 0x3c1, 0x3c2, 0x3c3, 0x3c4 };
616
617 static const s8 NCT6106_BEEP_BITS[] = {
618 0, 1, 2, 3, 4, 5, 7, 8, /* in0.. in7 */
619 9, 10, 11, 12, -1, -1, -1, /* in8..in14 */
620 32, /* global beep enable */
621 24, 25, 26, 27, 28, /* fan1..fan5 */
622 -1, -1, -1, /* unused */
623 16, 17, 18, 19, 20, 21, /* temp1..temp6 */
624 34, -1 /* intrusion0, intrusion1 */
625 };
626
627 static const u16 NCT6106_REG_TEMP_ALTERNATE[ARRAY_SIZE(nct6776_temp_label) - 1]
628 = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x51, 0x52, 0x54 };
629
630 static const u16 NCT6106_REG_TEMP_CRIT[ARRAY_SIZE(nct6776_temp_label) - 1]
631 = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x204, 0x205 };
632
633 static enum pwm_enable reg_to_pwm_enable(int pwm, int mode)
634 {
635 if (mode == 0 && pwm == 255)
636 return off;
637 return mode + 1;
638 }
639
640 static int pwm_enable_to_reg(enum pwm_enable mode)
641 {
642 if (mode == off)
643 return 0;
644 return mode - 1;
645 }
646
647 /*
648 * Conversions
649 */
650
651 /* 1 is DC mode, output in ms */
652 static unsigned int step_time_from_reg(u8 reg, u8 mode)
653 {
654 return mode ? 400 * reg : 100 * reg;
655 }
656
657 static u8 step_time_to_reg(unsigned int msec, u8 mode)
658 {
659 return clamp_val((mode ? (msec + 200) / 400 :
660 (msec + 50) / 100), 1, 255);
661 }
662
663 static unsigned int fan_from_reg8(u16 reg, unsigned int divreg)
664 {
665 if (reg == 0 || reg == 255)
666 return 0;
667 return 1350000U / (reg << divreg);
668 }
669
670 static unsigned int fan_from_reg13(u16 reg, unsigned int divreg)
671 {
672 if ((reg & 0xff1f) == 0xff1f)
673 return 0;
674
675 reg = (reg & 0x1f) | ((reg & 0xff00) >> 3);
676
677 if (reg == 0)
678 return 0;
679
680 return 1350000U / reg;
681 }
682
683 static unsigned int fan_from_reg16(u16 reg, unsigned int divreg)
684 {
685 if (reg == 0 || reg == 0xffff)
686 return 0;
687
688 /*
689 * Even though the registers are 16 bit wide, the fan divisor
690 * still applies.
691 */
692 return 1350000U / (reg << divreg);
693 }
694
695 static u16 fan_to_reg(u32 fan, unsigned int divreg)
696 {
697 if (!fan)
698 return 0;
699
700 return (1350000U / fan) >> divreg;
701 }
702
703 static inline unsigned int
704 div_from_reg(u8 reg)
705 {
706 return 1 << reg;
707 }
708
709 /*
710 * Some of the voltage inputs have internal scaling, the tables below
711 * contain 8 (the ADC LSB in mV) * scaling factor * 100
712 */
713 static const u16 scale_in[15] = {
714 800, 800, 1600, 1600, 800, 800, 800, 1600, 1600, 800, 800, 800, 800,
715 800, 800
716 };
717
718 static inline long in_from_reg(u8 reg, u8 nr)
719 {
720 return DIV_ROUND_CLOSEST(reg * scale_in[nr], 100);
721 }
722
723 static inline u8 in_to_reg(u32 val, u8 nr)
724 {
725 return clamp_val(DIV_ROUND_CLOSEST(val * 100, scale_in[nr]), 0, 255);
726 }
727
728 /*
729 * Data structures and manipulation thereof
730 */
731
732 struct nct6775_data {
733 int addr; /* IO base of hw monitor block */
734 int sioreg; /* SIO register address */
735 enum kinds kind;
736 const char *name;
737
738 const struct attribute_group *groups[6];
739
740 u16 reg_temp[5][NUM_TEMP]; /* 0=temp, 1=temp_over, 2=temp_hyst,
741 * 3=temp_crit, 4=temp_lcrit
742 */
743 u8 temp_src[NUM_TEMP];
744 u16 reg_temp_config[NUM_TEMP];
745 const char * const *temp_label;
746 int temp_label_num;
747
748 u16 REG_CONFIG;
749 u16 REG_VBAT;
750 u16 REG_DIODE;
751 u8 DIODE_MASK;
752
753 const s8 *ALARM_BITS;
754 const s8 *BEEP_BITS;
755
756 const u16 *REG_VIN;
757 const u16 *REG_IN_MINMAX[2];
758
759 const u16 *REG_TARGET;
760 const u16 *REG_FAN;
761 const u16 *REG_FAN_MODE;
762 const u16 *REG_FAN_MIN;
763 const u16 *REG_FAN_PULSES;
764 const u16 *FAN_PULSE_SHIFT;
765 const u16 *REG_FAN_TIME[3];
766
767 const u16 *REG_TOLERANCE_H;
768
769 const u8 *REG_PWM_MODE;
770 const u8 *PWM_MODE_MASK;
771
772 const u16 *REG_PWM[7]; /* [0]=pwm, [1]=pwm_start, [2]=pwm_floor,
773 * [3]=pwm_max, [4]=pwm_step,
774 * [5]=weight_duty_step, [6]=weight_duty_base
775 */
776 const u16 *REG_PWM_READ;
777
778 const u16 *REG_CRITICAL_PWM_ENABLE;
779 u8 CRITICAL_PWM_ENABLE_MASK;
780 const u16 *REG_CRITICAL_PWM;
781
782 const u16 *REG_AUTO_TEMP;
783 const u16 *REG_AUTO_PWM;
784
785 const u16 *REG_CRITICAL_TEMP;
786 const u16 *REG_CRITICAL_TEMP_TOLERANCE;
787
788 const u16 *REG_TEMP_SOURCE; /* temp register sources */
789 const u16 *REG_TEMP_SEL;
790 const u16 *REG_WEIGHT_TEMP_SEL;
791 const u16 *REG_WEIGHT_TEMP[3]; /* 0=base, 1=tolerance, 2=step */
792
793 const u16 *REG_TEMP_OFFSET;
794
795 const u16 *REG_ALARM;
796 const u16 *REG_BEEP;
797
798 unsigned int (*fan_from_reg)(u16 reg, unsigned int divreg);
799 unsigned int (*fan_from_reg_min)(u16 reg, unsigned int divreg);
800
801 struct mutex update_lock;
802 bool valid; /* true if following fields are valid */
803 unsigned long last_updated; /* In jiffies */
804
805 /* Register values */
806 u8 bank; /* current register bank */
807 u8 in_num; /* number of in inputs we have */
808 u8 in[15][3]; /* [0]=in, [1]=in_max, [2]=in_min */
809 unsigned int rpm[NUM_FAN];
810 u16 fan_min[NUM_FAN];
811 u8 fan_pulses[NUM_FAN];
812 u8 fan_div[NUM_FAN];
813 u8 has_pwm;
814 u8 has_fan; /* some fan inputs can be disabled */
815 u8 has_fan_min; /* some fans don't have min register */
816 bool has_fan_div;
817
818 u8 num_temp_alarms; /* 2, 3, or 6 */
819 u8 num_temp_beeps; /* 2, 3, or 6 */
820 u8 temp_fixed_num; /* 3 or 6 */
821 u8 temp_type[NUM_TEMP_FIXED];
822 s8 temp_offset[NUM_TEMP_FIXED];
823 s16 temp[5][NUM_TEMP]; /* 0=temp, 1=temp_over, 2=temp_hyst,
824 * 3=temp_crit, 4=temp_lcrit */
825 u64 alarms;
826 u64 beeps;
827
828 u8 pwm_num; /* number of pwm */
829 u8 pwm_mode[NUM_FAN]; /* 1->DC variable voltage,
830 * 0->PWM variable duty cycle
831 */
832 enum pwm_enable pwm_enable[NUM_FAN];
833 /* 0->off
834 * 1->manual
835 * 2->thermal cruise mode (also called SmartFan I)
836 * 3->fan speed cruise mode
837 * 4->SmartFan III
838 * 5->enhanced variable thermal cruise (SmartFan IV)
839 */
840 u8 pwm[7][NUM_FAN]; /* [0]=pwm, [1]=pwm_start, [2]=pwm_floor,
841 * [3]=pwm_max, [4]=pwm_step,
842 * [5]=weight_duty_step, [6]=weight_duty_base
843 */
844
845 u8 target_temp[NUM_FAN];
846 u8 target_temp_mask;
847 u32 target_speed[NUM_FAN];
848 u32 target_speed_tolerance[NUM_FAN];
849 u8 speed_tolerance_limit;
850
851 u8 temp_tolerance[2][NUM_FAN];
852 u8 tolerance_mask;
853
854 u8 fan_time[3][NUM_FAN]; /* 0 = stop_time, 1 = step_up, 2 = step_down */
855
856 /* Automatic fan speed control registers */
857 int auto_pwm_num;
858 u8 auto_pwm[NUM_FAN][7];
859 u8 auto_temp[NUM_FAN][7];
860 u8 pwm_temp_sel[NUM_FAN];
861 u8 pwm_weight_temp_sel[NUM_FAN];
862 u8 weight_temp[3][NUM_FAN]; /* 0->temp_step, 1->temp_step_tol,
863 * 2->temp_base
864 */
865
866 u8 vid;
867 u8 vrm;
868
869 bool have_vid;
870
871 u16 have_temp;
872 u16 have_temp_fixed;
873 u16 have_in;
874 #ifdef CONFIG_PM
875 /* Remember extra register values over suspend/resume */
876 u8 vbat;
877 u8 fandiv1;
878 u8 fandiv2;
879 #endif
880 };
881
882 struct nct6775_sio_data {
883 int sioreg;
884 enum kinds kind;
885 };
886
887 struct sensor_device_template {
888 struct device_attribute dev_attr;
889 union {
890 struct {
891 u8 nr;
892 u8 index;
893 } s;
894 int index;
895 } u;
896 bool s2; /* true if both index and nr are used */
897 };
898
899 struct sensor_device_attr_u {
900 union {
901 struct sensor_device_attribute a1;
902 struct sensor_device_attribute_2 a2;
903 } u;
904 char name[32];
905 };
906
907 #define __TEMPLATE_ATTR(_template, _mode, _show, _store) { \
908 .attr = {.name = _template, .mode = _mode }, \
909 .show = _show, \
910 .store = _store, \
911 }
912
913 #define SENSOR_DEVICE_TEMPLATE(_template, _mode, _show, _store, _index) \
914 { .dev_attr = __TEMPLATE_ATTR(_template, _mode, _show, _store), \
915 .u.index = _index, \
916 .s2 = false }
917
918 #define SENSOR_DEVICE_TEMPLATE_2(_template, _mode, _show, _store, \
919 _nr, _index) \
920 { .dev_attr = __TEMPLATE_ATTR(_template, _mode, _show, _store), \
921 .u.s.index = _index, \
922 .u.s.nr = _nr, \
923 .s2 = true }
924
925 #define SENSOR_TEMPLATE(_name, _template, _mode, _show, _store, _index) \
926 static struct sensor_device_template sensor_dev_template_##_name \
927 = SENSOR_DEVICE_TEMPLATE(_template, _mode, _show, _store, \
928 _index)
929
930 #define SENSOR_TEMPLATE_2(_name, _template, _mode, _show, _store, \
931 _nr, _index) \
932 static struct sensor_device_template sensor_dev_template_##_name \
933 = SENSOR_DEVICE_TEMPLATE_2(_template, _mode, _show, _store, \
934 _nr, _index)
935
936 struct sensor_template_group {
937 struct sensor_device_template **templates;
938 umode_t (*is_visible)(struct kobject *, struct attribute *, int);
939 int base;
940 };
941
942 static struct attribute_group *
943 nct6775_create_attr_group(struct device *dev, struct sensor_template_group *tg,
944 int repeat)
945 {
946 struct attribute_group *group;
947 struct sensor_device_attr_u *su;
948 struct sensor_device_attribute *a;
949 struct sensor_device_attribute_2 *a2;
950 struct attribute **attrs;
951 struct sensor_device_template **t;
952 int i, count;
953
954 if (repeat <= 0)
955 return ERR_PTR(-EINVAL);
956
957 t = tg->templates;
958 for (count = 0; *t; t++, count++)
959 ;
960
961 if (count == 0)
962 return ERR_PTR(-EINVAL);
963
964 group = devm_kzalloc(dev, sizeof(*group), GFP_KERNEL);
965 if (group == NULL)
966 return ERR_PTR(-ENOMEM);
967
968 attrs = devm_kzalloc(dev, sizeof(*attrs) * (repeat * count + 1),
969 GFP_KERNEL);
970 if (attrs == NULL)
971 return ERR_PTR(-ENOMEM);
972
973 su = devm_kzalloc(dev, sizeof(*su) * repeat * count,
974 GFP_KERNEL);
975 if (su == NULL)
976 return ERR_PTR(-ENOMEM);
977
978 group->attrs = attrs;
979 group->is_visible = tg->is_visible;
980
981 for (i = 0; i < repeat; i++) {
982 t = tg->templates;
983 while (*t != NULL) {
984 snprintf(su->name, sizeof(su->name),
985 (*t)->dev_attr.attr.name, tg->base + i);
986 if ((*t)->s2) {
987 a2 = &su->u.a2;
988 a2->dev_attr.attr.name = su->name;
989 a2->nr = (*t)->u.s.nr + i;
990 a2->index = (*t)->u.s.index;
991 a2->dev_attr.attr.mode =
992 (*t)->dev_attr.attr.mode;
993 a2->dev_attr.show = (*t)->dev_attr.show;
994 a2->dev_attr.store = (*t)->dev_attr.store;
995 *attrs = &a2->dev_attr.attr;
996 } else {
997 a = &su->u.a1;
998 a->dev_attr.attr.name = su->name;
999 a->index = (*t)->u.index + i;
1000 a->dev_attr.attr.mode =
1001 (*t)->dev_attr.attr.mode;
1002 a->dev_attr.show = (*t)->dev_attr.show;
1003 a->dev_attr.store = (*t)->dev_attr.store;
1004 *attrs = &a->dev_attr.attr;
1005 }
1006 attrs++;
1007 su++;
1008 t++;
1009 }
1010 }
1011
1012 return group;
1013 }
1014
1015 static bool is_word_sized(struct nct6775_data *data, u16 reg)
1016 {
1017 switch (data->kind) {
1018 case nct6106:
1019 return reg == 0x20 || reg == 0x22 || reg == 0x24 ||
1020 reg == 0xe0 || reg == 0xe2 || reg == 0xe4 ||
1021 reg == 0x111 || reg == 0x121 || reg == 0x131;
1022 case nct6775:
1023 return (((reg & 0xff00) == 0x100 ||
1024 (reg & 0xff00) == 0x200) &&
1025 ((reg & 0x00ff) == 0x50 ||
1026 (reg & 0x00ff) == 0x53 ||
1027 (reg & 0x00ff) == 0x55)) ||
1028 (reg & 0xfff0) == 0x630 ||
1029 reg == 0x640 || reg == 0x642 ||
1030 reg == 0x662 ||
1031 ((reg & 0xfff0) == 0x650 && (reg & 0x000f) >= 0x06) ||
1032 reg == 0x73 || reg == 0x75 || reg == 0x77;
1033 case nct6776:
1034 return (((reg & 0xff00) == 0x100 ||
1035 (reg & 0xff00) == 0x200) &&
1036 ((reg & 0x00ff) == 0x50 ||
1037 (reg & 0x00ff) == 0x53 ||
1038 (reg & 0x00ff) == 0x55)) ||
1039 (reg & 0xfff0) == 0x630 ||
1040 reg == 0x402 ||
1041 reg == 0x640 || reg == 0x642 ||
1042 ((reg & 0xfff0) == 0x650 && (reg & 0x000f) >= 0x06) ||
1043 reg == 0x73 || reg == 0x75 || reg == 0x77;
1044 case nct6779:
1045 case nct6791:
1046 return reg == 0x150 || reg == 0x153 || reg == 0x155 ||
1047 ((reg & 0xfff0) == 0x4b0 && (reg & 0x000f) < 0x0b) ||
1048 reg == 0x402 ||
1049 reg == 0x63a || reg == 0x63c || reg == 0x63e ||
1050 reg == 0x640 || reg == 0x642 ||
1051 reg == 0x73 || reg == 0x75 || reg == 0x77 || reg == 0x79 ||
1052 reg == 0x7b;
1053 }
1054 return false;
1055 }
1056
1057 /*
1058 * On older chips, only registers 0x50-0x5f are banked.
1059 * On more recent chips, all registers are banked.
1060 * Assume that is the case and set the bank number for each access.
1061 * Cache the bank number so it only needs to be set if it changes.
1062 */
1063 static inline void nct6775_set_bank(struct nct6775_data *data, u16 reg)
1064 {
1065 u8 bank = reg >> 8;
1066 if (data->bank != bank) {
1067 outb_p(NCT6775_REG_BANK, data->addr + ADDR_REG_OFFSET);
1068 outb_p(bank, data->addr + DATA_REG_OFFSET);
1069 data->bank = bank;
1070 }
1071 }
1072
1073 static u16 nct6775_read_value(struct nct6775_data *data, u16 reg)
1074 {
1075 int res, word_sized = is_word_sized(data, reg);
1076
1077 nct6775_set_bank(data, reg);
1078 outb_p(reg & 0xff, data->addr + ADDR_REG_OFFSET);
1079 res = inb_p(data->addr + DATA_REG_OFFSET);
1080 if (word_sized) {
1081 outb_p((reg & 0xff) + 1,
1082 data->addr + ADDR_REG_OFFSET);
1083 res = (res << 8) + inb_p(data->addr + DATA_REG_OFFSET);
1084 }
1085 return res;
1086 }
1087
1088 static int nct6775_write_value(struct nct6775_data *data, u16 reg, u16 value)
1089 {
1090 int word_sized = is_word_sized(data, reg);
1091
1092 nct6775_set_bank(data, reg);
1093 outb_p(reg & 0xff, data->addr + ADDR_REG_OFFSET);
1094 if (word_sized) {
1095 outb_p(value >> 8, data->addr + DATA_REG_OFFSET);
1096 outb_p((reg & 0xff) + 1,
1097 data->addr + ADDR_REG_OFFSET);
1098 }
1099 outb_p(value & 0xff, data->addr + DATA_REG_OFFSET);
1100 return 0;
1101 }
1102
1103 /* We left-align 8-bit temperature values to make the code simpler */
1104 static u16 nct6775_read_temp(struct nct6775_data *data, u16 reg)
1105 {
1106 u16 res;
1107
1108 res = nct6775_read_value(data, reg);
1109 if (!is_word_sized(data, reg))
1110 res <<= 8;
1111
1112 return res;
1113 }
1114
1115 static int nct6775_write_temp(struct nct6775_data *data, u16 reg, u16 value)
1116 {
1117 if (!is_word_sized(data, reg))
1118 value >>= 8;
1119 return nct6775_write_value(data, reg, value);
1120 }
1121
1122 /* This function assumes that the caller holds data->update_lock */
1123 static void nct6775_write_fan_div(struct nct6775_data *data, int nr)
1124 {
1125 u8 reg;
1126
1127 switch (nr) {
1128 case 0:
1129 reg = (nct6775_read_value(data, NCT6775_REG_FANDIV1) & 0x70)
1130 | (data->fan_div[0] & 0x7);
1131 nct6775_write_value(data, NCT6775_REG_FANDIV1, reg);
1132 break;
1133 case 1:
1134 reg = (nct6775_read_value(data, NCT6775_REG_FANDIV1) & 0x7)
1135 | ((data->fan_div[1] << 4) & 0x70);
1136 nct6775_write_value(data, NCT6775_REG_FANDIV1, reg);
1137 break;
1138 case 2:
1139 reg = (nct6775_read_value(data, NCT6775_REG_FANDIV2) & 0x70)
1140 | (data->fan_div[2] & 0x7);
1141 nct6775_write_value(data, NCT6775_REG_FANDIV2, reg);
1142 break;
1143 case 3:
1144 reg = (nct6775_read_value(data, NCT6775_REG_FANDIV2) & 0x7)
1145 | ((data->fan_div[3] << 4) & 0x70);
1146 nct6775_write_value(data, NCT6775_REG_FANDIV2, reg);
1147 break;
1148 }
1149 }
1150
1151 static void nct6775_write_fan_div_common(struct nct6775_data *data, int nr)
1152 {
1153 if (data->kind == nct6775)
1154 nct6775_write_fan_div(data, nr);
1155 }
1156
1157 static void nct6775_update_fan_div(struct nct6775_data *data)
1158 {
1159 u8 i;
1160
1161 i = nct6775_read_value(data, NCT6775_REG_FANDIV1);
1162 data->fan_div[0] = i & 0x7;
1163 data->fan_div[1] = (i & 0x70) >> 4;
1164 i = nct6775_read_value(data, NCT6775_REG_FANDIV2);
1165 data->fan_div[2] = i & 0x7;
1166 if (data->has_fan & (1 << 3))
1167 data->fan_div[3] = (i & 0x70) >> 4;
1168 }
1169
1170 static void nct6775_update_fan_div_common(struct nct6775_data *data)
1171 {
1172 if (data->kind == nct6775)
1173 nct6775_update_fan_div(data);
1174 }
1175
1176 static void nct6775_init_fan_div(struct nct6775_data *data)
1177 {
1178 int i;
1179
1180 nct6775_update_fan_div_common(data);
1181 /*
1182 * For all fans, start with highest divider value if the divider
1183 * register is not initialized. This ensures that we get a
1184 * reading from the fan count register, even if it is not optimal.
1185 * We'll compute a better divider later on.
1186 */
1187 for (i = 0; i < ARRAY_SIZE(data->fan_div); i++) {
1188 if (!(data->has_fan & (1 << i)))
1189 continue;
1190 if (data->fan_div[i] == 0) {
1191 data->fan_div[i] = 7;
1192 nct6775_write_fan_div_common(data, i);
1193 }
1194 }
1195 }
1196
1197 static void nct6775_init_fan_common(struct device *dev,
1198 struct nct6775_data *data)
1199 {
1200 int i;
1201 u8 reg;
1202
1203 if (data->has_fan_div)
1204 nct6775_init_fan_div(data);
1205
1206 /*
1207 * If fan_min is not set (0), set it to 0xff to disable it. This
1208 * prevents the unnecessary warning when fanX_min is reported as 0.
1209 */
1210 for (i = 0; i < ARRAY_SIZE(data->fan_min); i++) {
1211 if (data->has_fan_min & (1 << i)) {
1212 reg = nct6775_read_value(data, data->REG_FAN_MIN[i]);
1213 if (!reg)
1214 nct6775_write_value(data, data->REG_FAN_MIN[i],
1215 data->has_fan_div ? 0xff
1216 : 0xff1f);
1217 }
1218 }
1219 }
1220
1221 static void nct6775_select_fan_div(struct device *dev,
1222 struct nct6775_data *data, int nr, u16 reg)
1223 {
1224 u8 fan_div = data->fan_div[nr];
1225 u16 fan_min;
1226
1227 if (!data->has_fan_div)
1228 return;
1229
1230 /*
1231 * If we failed to measure the fan speed, or the reported value is not
1232 * in the optimal range, and the clock divider can be modified,
1233 * let's try that for next time.
1234 */
1235 if (reg == 0x00 && fan_div < 0x07)
1236 fan_div++;
1237 else if (reg != 0x00 && reg < 0x30 && fan_div > 0)
1238 fan_div--;
1239
1240 if (fan_div != data->fan_div[nr]) {
1241 dev_dbg(dev, "Modifying fan%d clock divider from %u to %u\n",
1242 nr + 1, div_from_reg(data->fan_div[nr]),
1243 div_from_reg(fan_div));
1244
1245 /* Preserve min limit if possible */
1246 if (data->has_fan_min & (1 << nr)) {
1247 fan_min = data->fan_min[nr];
1248 if (fan_div > data->fan_div[nr]) {
1249 if (fan_min != 255 && fan_min > 1)
1250 fan_min >>= 1;
1251 } else {
1252 if (fan_min != 255) {
1253 fan_min <<= 1;
1254 if (fan_min > 254)
1255 fan_min = 254;
1256 }
1257 }
1258 if (fan_min != data->fan_min[nr]) {
1259 data->fan_min[nr] = fan_min;
1260 nct6775_write_value(data, data->REG_FAN_MIN[nr],
1261 fan_min);
1262 }
1263 }
1264 data->fan_div[nr] = fan_div;
1265 nct6775_write_fan_div_common(data, nr);
1266 }
1267 }
1268
1269 static void nct6775_update_pwm(struct device *dev)
1270 {
1271 struct nct6775_data *data = dev_get_drvdata(dev);
1272 int i, j;
1273 int fanmodecfg, reg;
1274 bool duty_is_dc;
1275
1276 for (i = 0; i < data->pwm_num; i++) {
1277 if (!(data->has_pwm & (1 << i)))
1278 continue;
1279
1280 duty_is_dc = data->REG_PWM_MODE[i] &&
1281 (nct6775_read_value(data, data->REG_PWM_MODE[i])
1282 & data->PWM_MODE_MASK[i]);
1283 data->pwm_mode[i] = duty_is_dc;
1284
1285 fanmodecfg = nct6775_read_value(data, data->REG_FAN_MODE[i]);
1286 for (j = 0; j < ARRAY_SIZE(data->REG_PWM); j++) {
1287 if (data->REG_PWM[j] && data->REG_PWM[j][i]) {
1288 data->pwm[j][i]
1289 = nct6775_read_value(data,
1290 data->REG_PWM[j][i]);
1291 }
1292 }
1293
1294 data->pwm_enable[i] = reg_to_pwm_enable(data->pwm[0][i],
1295 (fanmodecfg >> 4) & 7);
1296
1297 if (!data->temp_tolerance[0][i] ||
1298 data->pwm_enable[i] != speed_cruise)
1299 data->temp_tolerance[0][i] = fanmodecfg & 0x0f;
1300 if (!data->target_speed_tolerance[i] ||
1301 data->pwm_enable[i] == speed_cruise) {
1302 u8 t = fanmodecfg & 0x0f;
1303 if (data->REG_TOLERANCE_H) {
1304 t |= (nct6775_read_value(data,
1305 data->REG_TOLERANCE_H[i]) & 0x70) >> 1;
1306 }
1307 data->target_speed_tolerance[i] = t;
1308 }
1309
1310 data->temp_tolerance[1][i] =
1311 nct6775_read_value(data,
1312 data->REG_CRITICAL_TEMP_TOLERANCE[i]);
1313
1314 reg = nct6775_read_value(data, data->REG_TEMP_SEL[i]);
1315 data->pwm_temp_sel[i] = reg & 0x1f;
1316 /* If fan can stop, report floor as 0 */
1317 if (reg & 0x80)
1318 data->pwm[2][i] = 0;
1319
1320 if (!data->REG_WEIGHT_TEMP_SEL[i])
1321 continue;
1322
1323 reg = nct6775_read_value(data, data->REG_WEIGHT_TEMP_SEL[i]);
1324 data->pwm_weight_temp_sel[i] = reg & 0x1f;
1325 /* If weight is disabled, report weight source as 0 */
1326 if (j == 1 && !(reg & 0x80))
1327 data->pwm_weight_temp_sel[i] = 0;
1328
1329 /* Weight temp data */
1330 for (j = 0; j < ARRAY_SIZE(data->weight_temp); j++) {
1331 data->weight_temp[j][i]
1332 = nct6775_read_value(data,
1333 data->REG_WEIGHT_TEMP[j][i]);
1334 }
1335 }
1336 }
1337
1338 static void nct6775_update_pwm_limits(struct device *dev)
1339 {
1340 struct nct6775_data *data = dev_get_drvdata(dev);
1341 int i, j;
1342 u8 reg;
1343 u16 reg_t;
1344
1345 for (i = 0; i < data->pwm_num; i++) {
1346 if (!(data->has_pwm & (1 << i)))
1347 continue;
1348
1349 for (j = 0; j < ARRAY_SIZE(data->fan_time); j++) {
1350 data->fan_time[j][i] =
1351 nct6775_read_value(data, data->REG_FAN_TIME[j][i]);
1352 }
1353
1354 reg_t = nct6775_read_value(data, data->REG_TARGET[i]);
1355 /* Update only in matching mode or if never updated */
1356 if (!data->target_temp[i] ||
1357 data->pwm_enable[i] == thermal_cruise)
1358 data->target_temp[i] = reg_t & data->target_temp_mask;
1359 if (!data->target_speed[i] ||
1360 data->pwm_enable[i] == speed_cruise) {
1361 if (data->REG_TOLERANCE_H) {
1362 reg_t |= (nct6775_read_value(data,
1363 data->REG_TOLERANCE_H[i]) & 0x0f) << 8;
1364 }
1365 data->target_speed[i] = reg_t;
1366 }
1367
1368 for (j = 0; j < data->auto_pwm_num; j++) {
1369 data->auto_pwm[i][j] =
1370 nct6775_read_value(data,
1371 NCT6775_AUTO_PWM(data, i, j));
1372 data->auto_temp[i][j] =
1373 nct6775_read_value(data,
1374 NCT6775_AUTO_TEMP(data, i, j));
1375 }
1376
1377 /* critical auto_pwm temperature data */
1378 data->auto_temp[i][data->auto_pwm_num] =
1379 nct6775_read_value(data, data->REG_CRITICAL_TEMP[i]);
1380
1381 switch (data->kind) {
1382 case nct6775:
1383 reg = nct6775_read_value(data,
1384 NCT6775_REG_CRITICAL_ENAB[i]);
1385 data->auto_pwm[i][data->auto_pwm_num] =
1386 (reg & 0x02) ? 0xff : 0x00;
1387 break;
1388 case nct6776:
1389 data->auto_pwm[i][data->auto_pwm_num] = 0xff;
1390 break;
1391 case nct6106:
1392 case nct6779:
1393 case nct6791:
1394 reg = nct6775_read_value(data,
1395 data->REG_CRITICAL_PWM_ENABLE[i]);
1396 if (reg & data->CRITICAL_PWM_ENABLE_MASK)
1397 reg = nct6775_read_value(data,
1398 data->REG_CRITICAL_PWM[i]);
1399 else
1400 reg = 0xff;
1401 data->auto_pwm[i][data->auto_pwm_num] = reg;
1402 break;
1403 }
1404 }
1405 }
1406
1407 static struct nct6775_data *nct6775_update_device(struct device *dev)
1408 {
1409 struct nct6775_data *data = dev_get_drvdata(dev);
1410 int i, j;
1411
1412 mutex_lock(&data->update_lock);
1413
1414 if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
1415 || !data->valid) {
1416 /* Fan clock dividers */
1417 nct6775_update_fan_div_common(data);
1418
1419 /* Measured voltages and limits */
1420 for (i = 0; i < data->in_num; i++) {
1421 if (!(data->have_in & (1 << i)))
1422 continue;
1423
1424 data->in[i][0] = nct6775_read_value(data,
1425 data->REG_VIN[i]);
1426 data->in[i][1] = nct6775_read_value(data,
1427 data->REG_IN_MINMAX[0][i]);
1428 data->in[i][2] = nct6775_read_value(data,
1429 data->REG_IN_MINMAX[1][i]);
1430 }
1431
1432 /* Measured fan speeds and limits */
1433 for (i = 0; i < ARRAY_SIZE(data->rpm); i++) {
1434 u16 reg;
1435
1436 if (!(data->has_fan & (1 << i)))
1437 continue;
1438
1439 reg = nct6775_read_value(data, data->REG_FAN[i]);
1440 data->rpm[i] = data->fan_from_reg(reg,
1441 data->fan_div[i]);
1442
1443 if (data->has_fan_min & (1 << i))
1444 data->fan_min[i] = nct6775_read_value(data,
1445 data->REG_FAN_MIN[i]);
1446 data->fan_pulses[i] =
1447 (nct6775_read_value(data, data->REG_FAN_PULSES[i])
1448 >> data->FAN_PULSE_SHIFT[i]) & 0x03;
1449
1450 nct6775_select_fan_div(dev, data, i, reg);
1451 }
1452
1453 nct6775_update_pwm(dev);
1454 nct6775_update_pwm_limits(dev);
1455
1456 /* Measured temperatures and limits */
1457 for (i = 0; i < NUM_TEMP; i++) {
1458 if (!(data->have_temp & (1 << i)))
1459 continue;
1460 for (j = 0; j < ARRAY_SIZE(data->reg_temp); j++) {
1461 if (data->reg_temp[j][i])
1462 data->temp[j][i]
1463 = nct6775_read_temp(data,
1464 data->reg_temp[j][i]);
1465 }
1466 if (i >= NUM_TEMP_FIXED ||
1467 !(data->have_temp_fixed & (1 << i)))
1468 continue;
1469 data->temp_offset[i]
1470 = nct6775_read_value(data, data->REG_TEMP_OFFSET[i]);
1471 }
1472
1473 data->alarms = 0;
1474 for (i = 0; i < NUM_REG_ALARM; i++) {
1475 u8 alarm;
1476 if (!data->REG_ALARM[i])
1477 continue;
1478 alarm = nct6775_read_value(data, data->REG_ALARM[i]);
1479 data->alarms |= ((u64)alarm) << (i << 3);
1480 }
1481
1482 data->beeps = 0;
1483 for (i = 0; i < NUM_REG_BEEP; i++) {
1484 u8 beep;
1485 if (!data->REG_BEEP[i])
1486 continue;
1487 beep = nct6775_read_value(data, data->REG_BEEP[i]);
1488 data->beeps |= ((u64)beep) << (i << 3);
1489 }
1490
1491 data->last_updated = jiffies;
1492 data->valid = true;
1493 }
1494
1495 mutex_unlock(&data->update_lock);
1496 return data;
1497 }
1498
1499 /*
1500 * Sysfs callback functions
1501 */
1502 static ssize_t
1503 show_in_reg(struct device *dev, struct device_attribute *attr, char *buf)
1504 {
1505 struct nct6775_data *data = nct6775_update_device(dev);
1506 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
1507 int nr = sattr->nr;
1508 int index = sattr->index;
1509 return sprintf(buf, "%ld\n", in_from_reg(data->in[nr][index], nr));
1510 }
1511
1512 static ssize_t
1513 store_in_reg(struct device *dev, struct device_attribute *attr, const char *buf,
1514 size_t count)
1515 {
1516 struct nct6775_data *data = dev_get_drvdata(dev);
1517 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
1518 int nr = sattr->nr;
1519 int index = sattr->index;
1520 unsigned long val;
1521 int err = kstrtoul(buf, 10, &val);
1522 if (err < 0)
1523 return err;
1524 mutex_lock(&data->update_lock);
1525 data->in[nr][index] = in_to_reg(val, nr);
1526 nct6775_write_value(data, data->REG_IN_MINMAX[index - 1][nr],
1527 data->in[nr][index]);
1528 mutex_unlock(&data->update_lock);
1529 return count;
1530 }
1531
1532 static ssize_t
1533 show_alarm(struct device *dev, struct device_attribute *attr, char *buf)
1534 {
1535 struct nct6775_data *data = nct6775_update_device(dev);
1536 struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
1537 int nr = data->ALARM_BITS[sattr->index];
1538 return sprintf(buf, "%u\n",
1539 (unsigned int)((data->alarms >> nr) & 0x01));
1540 }
1541
1542 static int find_temp_source(struct nct6775_data *data, int index, int count)
1543 {
1544 int source = data->temp_src[index];
1545 int nr;
1546
1547 for (nr = 0; nr < count; nr++) {
1548 int src;
1549
1550 src = nct6775_read_value(data,
1551 data->REG_TEMP_SOURCE[nr]) & 0x1f;
1552 if (src == source)
1553 return nr;
1554 }
1555 return -ENODEV;
1556 }
1557
1558 static ssize_t
1559 show_temp_alarm(struct device *dev, struct device_attribute *attr, char *buf)
1560 {
1561 struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
1562 struct nct6775_data *data = nct6775_update_device(dev);
1563 unsigned int alarm = 0;
1564 int nr;
1565
1566 /*
1567 * For temperatures, there is no fixed mapping from registers to alarm
1568 * bits. Alarm bits are determined by the temperature source mapping.
1569 */
1570 nr = find_temp_source(data, sattr->index, data->num_temp_alarms);
1571 if (nr >= 0) {
1572 int bit = data->ALARM_BITS[nr + TEMP_ALARM_BASE];
1573 alarm = (data->alarms >> bit) & 0x01;
1574 }
1575 return sprintf(buf, "%u\n", alarm);
1576 }
1577
1578 static ssize_t
1579 show_beep(struct device *dev, struct device_attribute *attr, char *buf)
1580 {
1581 struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
1582 struct nct6775_data *data = nct6775_update_device(dev);
1583 int nr = data->BEEP_BITS[sattr->index];
1584
1585 return sprintf(buf, "%u\n",
1586 (unsigned int)((data->beeps >> nr) & 0x01));
1587 }
1588
1589 static ssize_t
1590 store_beep(struct device *dev, struct device_attribute *attr, const char *buf,
1591 size_t count)
1592 {
1593 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
1594 struct nct6775_data *data = dev_get_drvdata(dev);
1595 int nr = data->BEEP_BITS[sattr->index];
1596 int regindex = nr >> 3;
1597 unsigned long val;
1598
1599 int err = kstrtoul(buf, 10, &val);
1600 if (err < 0)
1601 return err;
1602 if (val > 1)
1603 return -EINVAL;
1604
1605 mutex_lock(&data->update_lock);
1606 if (val)
1607 data->beeps |= (1ULL << nr);
1608 else
1609 data->beeps &= ~(1ULL << nr);
1610 nct6775_write_value(data, data->REG_BEEP[regindex],
1611 (data->beeps >> (regindex << 3)) & 0xff);
1612 mutex_unlock(&data->update_lock);
1613 return count;
1614 }
1615
1616 static ssize_t
1617 show_temp_beep(struct device *dev, struct device_attribute *attr, char *buf)
1618 {
1619 struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
1620 struct nct6775_data *data = nct6775_update_device(dev);
1621 unsigned int beep = 0;
1622 int nr;
1623
1624 /*
1625 * For temperatures, there is no fixed mapping from registers to beep
1626 * enable bits. Beep enable bits are determined by the temperature
1627 * source mapping.
1628 */
1629 nr = find_temp_source(data, sattr->index, data->num_temp_beeps);
1630 if (nr >= 0) {
1631 int bit = data->BEEP_BITS[nr + TEMP_ALARM_BASE];
1632 beep = (data->beeps >> bit) & 0x01;
1633 }
1634 return sprintf(buf, "%u\n", beep);
1635 }
1636
1637 static ssize_t
1638 store_temp_beep(struct device *dev, struct device_attribute *attr,
1639 const char *buf, size_t count)
1640 {
1641 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
1642 struct nct6775_data *data = dev_get_drvdata(dev);
1643 int nr, bit, regindex;
1644 unsigned long val;
1645
1646 int err = kstrtoul(buf, 10, &val);
1647 if (err < 0)
1648 return err;
1649 if (val > 1)
1650 return -EINVAL;
1651
1652 nr = find_temp_source(data, sattr->index, data->num_temp_beeps);
1653 if (nr < 0)
1654 return nr;
1655
1656 bit = data->BEEP_BITS[nr + TEMP_ALARM_BASE];
1657 regindex = bit >> 3;
1658
1659 mutex_lock(&data->update_lock);
1660 if (val)
1661 data->beeps |= (1ULL << bit);
1662 else
1663 data->beeps &= ~(1ULL << bit);
1664 nct6775_write_value(data, data->REG_BEEP[regindex],
1665 (data->beeps >> (regindex << 3)) & 0xff);
1666 mutex_unlock(&data->update_lock);
1667
1668 return count;
1669 }
1670
1671 static umode_t nct6775_in_is_visible(struct kobject *kobj,
1672 struct attribute *attr, int index)
1673 {
1674 struct device *dev = container_of(kobj, struct device, kobj);
1675 struct nct6775_data *data = dev_get_drvdata(dev);
1676 int in = index / 5; /* voltage index */
1677
1678 if (!(data->have_in & (1 << in)))
1679 return 0;
1680
1681 return attr->mode;
1682 }
1683
1684 SENSOR_TEMPLATE_2(in_input, "in%d_input", S_IRUGO, show_in_reg, NULL, 0, 0);
1685 SENSOR_TEMPLATE(in_alarm, "in%d_alarm", S_IRUGO, show_alarm, NULL, 0);
1686 SENSOR_TEMPLATE(in_beep, "in%d_beep", S_IWUSR | S_IRUGO, show_beep, store_beep,
1687 0);
1688 SENSOR_TEMPLATE_2(in_min, "in%d_min", S_IWUSR | S_IRUGO, show_in_reg,
1689 store_in_reg, 0, 1);
1690 SENSOR_TEMPLATE_2(in_max, "in%d_max", S_IWUSR | S_IRUGO, show_in_reg,
1691 store_in_reg, 0, 2);
1692
1693 /*
1694 * nct6775_in_is_visible uses the index into the following array
1695 * to determine if attributes should be created or not.
1696 * Any change in order or content must be matched.
1697 */
1698 static struct sensor_device_template *nct6775_attributes_in_template[] = {
1699 &sensor_dev_template_in_input,
1700 &sensor_dev_template_in_alarm,
1701 &sensor_dev_template_in_beep,
1702 &sensor_dev_template_in_min,
1703 &sensor_dev_template_in_max,
1704 NULL
1705 };
1706
1707 static struct sensor_template_group nct6775_in_template_group = {
1708 .templates = nct6775_attributes_in_template,
1709 .is_visible = nct6775_in_is_visible,
1710 };
1711
1712 static ssize_t
1713 show_fan(struct device *dev, struct device_attribute *attr, char *buf)
1714 {
1715 struct nct6775_data *data = nct6775_update_device(dev);
1716 struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
1717 int nr = sattr->index;
1718 return sprintf(buf, "%d\n", data->rpm[nr]);
1719 }
1720
1721 static ssize_t
1722 show_fan_min(struct device *dev, struct device_attribute *attr, char *buf)
1723 {
1724 struct nct6775_data *data = nct6775_update_device(dev);
1725 struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
1726 int nr = sattr->index;
1727 return sprintf(buf, "%d\n",
1728 data->fan_from_reg_min(data->fan_min[nr],
1729 data->fan_div[nr]));
1730 }
1731
1732 static ssize_t
1733 show_fan_div(struct device *dev, struct device_attribute *attr, char *buf)
1734 {
1735 struct nct6775_data *data = nct6775_update_device(dev);
1736 struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
1737 int nr = sattr->index;
1738 return sprintf(buf, "%u\n", div_from_reg(data->fan_div[nr]));
1739 }
1740
1741 static ssize_t
1742 store_fan_min(struct device *dev, struct device_attribute *attr,
1743 const char *buf, size_t count)
1744 {
1745 struct nct6775_data *data = dev_get_drvdata(dev);
1746 struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
1747 int nr = sattr->index;
1748 unsigned long val;
1749 int err;
1750 unsigned int reg;
1751 u8 new_div;
1752
1753 err = kstrtoul(buf, 10, &val);
1754 if (err < 0)
1755 return err;
1756
1757 mutex_lock(&data->update_lock);
1758 if (!data->has_fan_div) {
1759 /* NCT6776F or NCT6779D; we know this is a 13 bit register */
1760 if (!val) {
1761 val = 0xff1f;
1762 } else {
1763 if (val > 1350000U)
1764 val = 135000U;
1765 val = 1350000U / val;
1766 val = (val & 0x1f) | ((val << 3) & 0xff00);
1767 }
1768 data->fan_min[nr] = val;
1769 goto write_min; /* Leave fan divider alone */
1770 }
1771 if (!val) {
1772 /* No min limit, alarm disabled */
1773 data->fan_min[nr] = 255;
1774 new_div = data->fan_div[nr]; /* No change */
1775 dev_info(dev, "fan%u low limit and alarm disabled\n", nr + 1);
1776 goto write_div;
1777 }
1778 reg = 1350000U / val;
1779 if (reg >= 128 * 255) {
1780 /*
1781 * Speed below this value cannot possibly be represented,
1782 * even with the highest divider (128)
1783 */
1784 data->fan_min[nr] = 254;
1785 new_div = 7; /* 128 == (1 << 7) */
1786 dev_warn(dev,
1787 "fan%u low limit %lu below minimum %u, set to minimum\n",
1788 nr + 1, val, data->fan_from_reg_min(254, 7));
1789 } else if (!reg) {
1790 /*
1791 * Speed above this value cannot possibly be represented,
1792 * even with the lowest divider (1)
1793 */
1794 data->fan_min[nr] = 1;
1795 new_div = 0; /* 1 == (1 << 0) */
1796 dev_warn(dev,
1797 "fan%u low limit %lu above maximum %u, set to maximum\n",
1798 nr + 1, val, data->fan_from_reg_min(1, 0));
1799 } else {
1800 /*
1801 * Automatically pick the best divider, i.e. the one such
1802 * that the min limit will correspond to a register value
1803 * in the 96..192 range
1804 */
1805 new_div = 0;
1806 while (reg > 192 && new_div < 7) {
1807 reg >>= 1;
1808 new_div++;
1809 }
1810 data->fan_min[nr] = reg;
1811 }
1812
1813 write_div:
1814 /*
1815 * Write both the fan clock divider (if it changed) and the new
1816 * fan min (unconditionally)
1817 */
1818 if (new_div != data->fan_div[nr]) {
1819 dev_dbg(dev, "fan%u clock divider changed from %u to %u\n",
1820 nr + 1, div_from_reg(data->fan_div[nr]),
1821 div_from_reg(new_div));
1822 data->fan_div[nr] = new_div;
1823 nct6775_write_fan_div_common(data, nr);
1824 /* Give the chip time to sample a new speed value */
1825 data->last_updated = jiffies;
1826 }
1827
1828 write_min:
1829 nct6775_write_value(data, data->REG_FAN_MIN[nr], data->fan_min[nr]);
1830 mutex_unlock(&data->update_lock);
1831
1832 return count;
1833 }
1834
1835 static ssize_t
1836 show_fan_pulses(struct device *dev, struct device_attribute *attr, char *buf)
1837 {
1838 struct nct6775_data *data = nct6775_update_device(dev);
1839 struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
1840 int p = data->fan_pulses[sattr->index];
1841
1842 return sprintf(buf, "%d\n", p ? : 4);
1843 }
1844
1845 static ssize_t
1846 store_fan_pulses(struct device *dev, struct device_attribute *attr,
1847 const char *buf, size_t count)
1848 {
1849 struct nct6775_data *data = dev_get_drvdata(dev);
1850 struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
1851 int nr = sattr->index;
1852 unsigned long val;
1853 int err;
1854 u8 reg;
1855
1856 err = kstrtoul(buf, 10, &val);
1857 if (err < 0)
1858 return err;
1859
1860 if (val > 4)
1861 return -EINVAL;
1862
1863 mutex_lock(&data->update_lock);
1864 data->fan_pulses[nr] = val & 3;
1865 reg = nct6775_read_value(data, data->REG_FAN_PULSES[nr]);
1866 reg &= ~(0x03 << data->FAN_PULSE_SHIFT[nr]);
1867 reg |= (val & 3) << data->FAN_PULSE_SHIFT[nr];
1868 nct6775_write_value(data, data->REG_FAN_PULSES[nr], reg);
1869 mutex_unlock(&data->update_lock);
1870
1871 return count;
1872 }
1873
1874 static umode_t nct6775_fan_is_visible(struct kobject *kobj,
1875 struct attribute *attr, int index)
1876 {
1877 struct device *dev = container_of(kobj, struct device, kobj);
1878 struct nct6775_data *data = dev_get_drvdata(dev);
1879 int fan = index / 6; /* fan index */
1880 int nr = index % 6; /* attribute index */
1881
1882 if (!(data->has_fan & (1 << fan)))
1883 return 0;
1884
1885 if (nr == 1 && data->ALARM_BITS[FAN_ALARM_BASE + fan] == -1)
1886 return 0;
1887 if (nr == 2 && data->BEEP_BITS[FAN_ALARM_BASE + fan] == -1)
1888 return 0;
1889 if (nr == 4 && !(data->has_fan_min & (1 << fan)))
1890 return 0;
1891 if (nr == 5 && data->kind != nct6775)
1892 return 0;
1893
1894 return attr->mode;
1895 }
1896
1897 SENSOR_TEMPLATE(fan_input, "fan%d_input", S_IRUGO, show_fan, NULL, 0);
1898 SENSOR_TEMPLATE(fan_alarm, "fan%d_alarm", S_IRUGO, show_alarm, NULL,
1899 FAN_ALARM_BASE);
1900 SENSOR_TEMPLATE(fan_beep, "fan%d_beep", S_IWUSR | S_IRUGO, show_beep,
1901 store_beep, FAN_ALARM_BASE);
1902 SENSOR_TEMPLATE(fan_pulses, "fan%d_pulses", S_IWUSR | S_IRUGO, show_fan_pulses,
1903 store_fan_pulses, 0);
1904 SENSOR_TEMPLATE(fan_min, "fan%d_min", S_IWUSR | S_IRUGO, show_fan_min,
1905 store_fan_min, 0);
1906 SENSOR_TEMPLATE(fan_div, "fan%d_div", S_IRUGO, show_fan_div, NULL, 0);
1907
1908 /*
1909 * nct6775_fan_is_visible uses the index into the following array
1910 * to determine if attributes should be created or not.
1911 * Any change in order or content must be matched.
1912 */
1913 static struct sensor_device_template *nct6775_attributes_fan_template[] = {
1914 &sensor_dev_template_fan_input,
1915 &sensor_dev_template_fan_alarm, /* 1 */
1916 &sensor_dev_template_fan_beep, /* 2 */
1917 &sensor_dev_template_fan_pulses,
1918 &sensor_dev_template_fan_min, /* 4 */
1919 &sensor_dev_template_fan_div, /* 5 */
1920 NULL
1921 };
1922
1923 static struct sensor_template_group nct6775_fan_template_group = {
1924 .templates = nct6775_attributes_fan_template,
1925 .is_visible = nct6775_fan_is_visible,
1926 .base = 1,
1927 };
1928
1929 static ssize_t
1930 show_temp_label(struct device *dev, struct device_attribute *attr, char *buf)
1931 {
1932 struct nct6775_data *data = nct6775_update_device(dev);
1933 struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
1934 int nr = sattr->index;
1935 return sprintf(buf, "%s\n", data->temp_label[data->temp_src[nr]]);
1936 }
1937
1938 static ssize_t
1939 show_temp(struct device *dev, struct device_attribute *attr, char *buf)
1940 {
1941 struct nct6775_data *data = nct6775_update_device(dev);
1942 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
1943 int nr = sattr->nr;
1944 int index = sattr->index;
1945
1946 return sprintf(buf, "%d\n", LM75_TEMP_FROM_REG(data->temp[index][nr]));
1947 }
1948
1949 static ssize_t
1950 store_temp(struct device *dev, struct device_attribute *attr, const char *buf,
1951 size_t count)
1952 {
1953 struct nct6775_data *data = dev_get_drvdata(dev);
1954 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
1955 int nr = sattr->nr;
1956 int index = sattr->index;
1957 int err;
1958 long val;
1959
1960 err = kstrtol(buf, 10, &val);
1961 if (err < 0)
1962 return err;
1963
1964 mutex_lock(&data->update_lock);
1965 data->temp[index][nr] = LM75_TEMP_TO_REG(val);
1966 nct6775_write_temp(data, data->reg_temp[index][nr],
1967 data->temp[index][nr]);
1968 mutex_unlock(&data->update_lock);
1969 return count;
1970 }
1971
1972 static ssize_t
1973 show_temp_offset(struct device *dev, struct device_attribute *attr, char *buf)
1974 {
1975 struct nct6775_data *data = nct6775_update_device(dev);
1976 struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
1977
1978 return sprintf(buf, "%d\n", data->temp_offset[sattr->index] * 1000);
1979 }
1980
1981 static ssize_t
1982 store_temp_offset(struct device *dev, struct device_attribute *attr,
1983 const char *buf, size_t count)
1984 {
1985 struct nct6775_data *data = dev_get_drvdata(dev);
1986 struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
1987 int nr = sattr->index;
1988 long val;
1989 int err;
1990
1991 err = kstrtol(buf, 10, &val);
1992 if (err < 0)
1993 return err;
1994
1995 val = clamp_val(DIV_ROUND_CLOSEST(val, 1000), -128, 127);
1996
1997 mutex_lock(&data->update_lock);
1998 data->temp_offset[nr] = val;
1999 nct6775_write_value(data, data->REG_TEMP_OFFSET[nr], val);
2000 mutex_unlock(&data->update_lock);
2001
2002 return count;
2003 }
2004
2005 static ssize_t
2006 show_temp_type(struct device *dev, struct device_attribute *attr, char *buf)
2007 {
2008 struct nct6775_data *data = nct6775_update_device(dev);
2009 struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
2010 int nr = sattr->index;
2011 return sprintf(buf, "%d\n", (int)data->temp_type[nr]);
2012 }
2013
2014 static ssize_t
2015 store_temp_type(struct device *dev, struct device_attribute *attr,
2016 const char *buf, size_t count)
2017 {
2018 struct nct6775_data *data = nct6775_update_device(dev);
2019 struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
2020 int nr = sattr->index;
2021 unsigned long val;
2022 int err;
2023 u8 vbat, diode, vbit, dbit;
2024
2025 err = kstrtoul(buf, 10, &val);
2026 if (err < 0)
2027 return err;
2028
2029 if (val != 1 && val != 3 && val != 4)
2030 return -EINVAL;
2031
2032 mutex_lock(&data->update_lock);
2033
2034 data->temp_type[nr] = val;
2035 vbit = 0x02 << nr;
2036 dbit = data->DIODE_MASK << nr;
2037 vbat = nct6775_read_value(data, data->REG_VBAT) & ~vbit;
2038 diode = nct6775_read_value(data, data->REG_DIODE) & ~dbit;
2039 switch (val) {
2040 case 1: /* CPU diode (diode, current mode) */
2041 vbat |= vbit;
2042 diode |= dbit;
2043 break;
2044 case 3: /* diode, voltage mode */
2045 vbat |= dbit;
2046 break;
2047 case 4: /* thermistor */
2048 break;
2049 }
2050 nct6775_write_value(data, data->REG_VBAT, vbat);
2051 nct6775_write_value(data, data->REG_DIODE, diode);
2052
2053 mutex_unlock(&data->update_lock);
2054 return count;
2055 }
2056
2057 static umode_t nct6775_temp_is_visible(struct kobject *kobj,
2058 struct attribute *attr, int index)
2059 {
2060 struct device *dev = container_of(kobj, struct device, kobj);
2061 struct nct6775_data *data = dev_get_drvdata(dev);
2062 int temp = index / 10; /* temp index */
2063 int nr = index % 10; /* attribute index */
2064
2065 if (!(data->have_temp & (1 << temp)))
2066 return 0;
2067
2068 if (nr == 2 && find_temp_source(data, temp, data->num_temp_alarms) < 0)
2069 return 0; /* alarm */
2070
2071 if (nr == 3 && find_temp_source(data, temp, data->num_temp_beeps) < 0)
2072 return 0; /* beep */
2073
2074 if (nr == 4 && !data->reg_temp[1][temp]) /* max */
2075 return 0;
2076
2077 if (nr == 5 && !data->reg_temp[2][temp]) /* max_hyst */
2078 return 0;
2079
2080 if (nr == 6 && !data->reg_temp[3][temp]) /* crit */
2081 return 0;
2082
2083 if (nr == 7 && !data->reg_temp[4][temp]) /* lcrit */
2084 return 0;
2085
2086 /* offset and type only apply to fixed sensors */
2087 if (nr > 7 && !(data->have_temp_fixed & (1 << temp)))
2088 return 0;
2089
2090 return attr->mode;
2091 }
2092
2093 SENSOR_TEMPLATE_2(temp_input, "temp%d_input", S_IRUGO, show_temp, NULL, 0, 0);
2094 SENSOR_TEMPLATE(temp_label, "temp%d_label", S_IRUGO, show_temp_label, NULL, 0);
2095 SENSOR_TEMPLATE_2(temp_max, "temp%d_max", S_IRUGO | S_IWUSR, show_temp,
2096 store_temp, 0, 1);
2097 SENSOR_TEMPLATE_2(temp_max_hyst, "temp%d_max_hyst", S_IRUGO | S_IWUSR,
2098 show_temp, store_temp, 0, 2);
2099 SENSOR_TEMPLATE_2(temp_crit, "temp%d_crit", S_IRUGO | S_IWUSR, show_temp,
2100 store_temp, 0, 3);
2101 SENSOR_TEMPLATE_2(temp_lcrit, "temp%d_lcrit", S_IRUGO | S_IWUSR, show_temp,
2102 store_temp, 0, 4);
2103 SENSOR_TEMPLATE(temp_offset, "temp%d_offset", S_IRUGO | S_IWUSR,
2104 show_temp_offset, store_temp_offset, 0);
2105 SENSOR_TEMPLATE(temp_type, "temp%d_type", S_IRUGO | S_IWUSR, show_temp_type,
2106 store_temp_type, 0);
2107 SENSOR_TEMPLATE(temp_alarm, "temp%d_alarm", S_IRUGO, show_temp_alarm, NULL, 0);
2108 SENSOR_TEMPLATE(temp_beep, "temp%d_beep", S_IRUGO | S_IWUSR, show_temp_beep,
2109 store_temp_beep, 0);
2110
2111 /*
2112 * nct6775_temp_is_visible uses the index into the following array
2113 * to determine if attributes should be created or not.
2114 * Any change in order or content must be matched.
2115 */
2116 static struct sensor_device_template *nct6775_attributes_temp_template[] = {
2117 &sensor_dev_template_temp_input,
2118 &sensor_dev_template_temp_label,
2119 &sensor_dev_template_temp_alarm, /* 2 */
2120 &sensor_dev_template_temp_beep, /* 3 */
2121 &sensor_dev_template_temp_max, /* 4 */
2122 &sensor_dev_template_temp_max_hyst, /* 5 */
2123 &sensor_dev_template_temp_crit, /* 6 */
2124 &sensor_dev_template_temp_lcrit, /* 7 */
2125 &sensor_dev_template_temp_offset, /* 8 */
2126 &sensor_dev_template_temp_type, /* 9 */
2127 NULL
2128 };
2129
2130 static struct sensor_template_group nct6775_temp_template_group = {
2131 .templates = nct6775_attributes_temp_template,
2132 .is_visible = nct6775_temp_is_visible,
2133 .base = 1,
2134 };
2135
2136 static ssize_t
2137 show_pwm_mode(struct device *dev, struct device_attribute *attr, char *buf)
2138 {
2139 struct nct6775_data *data = nct6775_update_device(dev);
2140 struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
2141
2142 return sprintf(buf, "%d\n", !data->pwm_mode[sattr->index]);
2143 }
2144
2145 static ssize_t
2146 store_pwm_mode(struct device *dev, struct device_attribute *attr,
2147 const char *buf, size_t count)
2148 {
2149 struct nct6775_data *data = dev_get_drvdata(dev);
2150 struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
2151 int nr = sattr->index;
2152 unsigned long val;
2153 int err;
2154 u8 reg;
2155
2156 err = kstrtoul(buf, 10, &val);
2157 if (err < 0)
2158 return err;
2159
2160 if (val > 1)
2161 return -EINVAL;
2162
2163 /* Setting DC mode is not supported for all chips/channels */
2164 if (data->REG_PWM_MODE[nr] == 0) {
2165 if (val)
2166 return -EINVAL;
2167 return count;
2168 }
2169
2170 mutex_lock(&data->update_lock);
2171 data->pwm_mode[nr] = val;
2172 reg = nct6775_read_value(data, data->REG_PWM_MODE[nr]);
2173 reg &= ~data->PWM_MODE_MASK[nr];
2174 if (val)
2175 reg |= data->PWM_MODE_MASK[nr];
2176 nct6775_write_value(data, data->REG_PWM_MODE[nr], reg);
2177 mutex_unlock(&data->update_lock);
2178 return count;
2179 }
2180
2181 static ssize_t
2182 show_pwm(struct device *dev, struct device_attribute *attr, char *buf)
2183 {
2184 struct nct6775_data *data = nct6775_update_device(dev);
2185 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
2186 int nr = sattr->nr;
2187 int index = sattr->index;
2188 int pwm;
2189
2190 /*
2191 * For automatic fan control modes, show current pwm readings.
2192 * Otherwise, show the configured value.
2193 */
2194 if (index == 0 && data->pwm_enable[nr] > manual)
2195 pwm = nct6775_read_value(data, data->REG_PWM_READ[nr]);
2196 else
2197 pwm = data->pwm[index][nr];
2198
2199 return sprintf(buf, "%d\n", pwm);
2200 }
2201
2202 static ssize_t
2203 store_pwm(struct device *dev, struct device_attribute *attr, const char *buf,
2204 size_t count)
2205 {
2206 struct nct6775_data *data = dev_get_drvdata(dev);
2207 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
2208 int nr = sattr->nr;
2209 int index = sattr->index;
2210 unsigned long val;
2211 int minval[7] = { 0, 1, 1, data->pwm[2][nr], 0, 0, 0 };
2212 int maxval[7]
2213 = { 255, 255, data->pwm[3][nr] ? : 255, 255, 255, 255, 255 };
2214 int err;
2215 u8 reg;
2216
2217 err = kstrtoul(buf, 10, &val);
2218 if (err < 0)
2219 return err;
2220 val = clamp_val(val, minval[index], maxval[index]);
2221
2222 mutex_lock(&data->update_lock);
2223 data->pwm[index][nr] = val;
2224 nct6775_write_value(data, data->REG_PWM[index][nr], val);
2225 if (index == 2) { /* floor: disable if val == 0 */
2226 reg = nct6775_read_value(data, data->REG_TEMP_SEL[nr]);
2227 reg &= 0x7f;
2228 if (val)
2229 reg |= 0x80;
2230 nct6775_write_value(data, data->REG_TEMP_SEL[nr], reg);
2231 }
2232 mutex_unlock(&data->update_lock);
2233 return count;
2234 }
2235
2236 /* Returns 0 if OK, -EINVAL otherwise */
2237 static int check_trip_points(struct nct6775_data *data, int nr)
2238 {
2239 int i;
2240
2241 for (i = 0; i < data->auto_pwm_num - 1; i++) {
2242 if (data->auto_temp[nr][i] > data->auto_temp[nr][i + 1])
2243 return -EINVAL;
2244 }
2245 for (i = 0; i < data->auto_pwm_num - 1; i++) {
2246 if (data->auto_pwm[nr][i] > data->auto_pwm[nr][i + 1])
2247 return -EINVAL;
2248 }
2249 /* validate critical temperature and pwm if enabled (pwm > 0) */
2250 if (data->auto_pwm[nr][data->auto_pwm_num]) {
2251 if (data->auto_temp[nr][data->auto_pwm_num - 1] >
2252 data->auto_temp[nr][data->auto_pwm_num] ||
2253 data->auto_pwm[nr][data->auto_pwm_num - 1] >
2254 data->auto_pwm[nr][data->auto_pwm_num])
2255 return -EINVAL;
2256 }
2257 return 0;
2258 }
2259
2260 static void pwm_update_registers(struct nct6775_data *data, int nr)
2261 {
2262 u8 reg;
2263
2264 switch (data->pwm_enable[nr]) {
2265 case off:
2266 case manual:
2267 break;
2268 case speed_cruise:
2269 reg = nct6775_read_value(data, data->REG_FAN_MODE[nr]);
2270 reg = (reg & ~data->tolerance_mask) |
2271 (data->target_speed_tolerance[nr] & data->tolerance_mask);
2272 nct6775_write_value(data, data->REG_FAN_MODE[nr], reg);
2273 nct6775_write_value(data, data->REG_TARGET[nr],
2274 data->target_speed[nr] & 0xff);
2275 if (data->REG_TOLERANCE_H) {
2276 reg = (data->target_speed[nr] >> 8) & 0x0f;
2277 reg |= (data->target_speed_tolerance[nr] & 0x38) << 1;
2278 nct6775_write_value(data,
2279 data->REG_TOLERANCE_H[nr],
2280 reg);
2281 }
2282 break;
2283 case thermal_cruise:
2284 nct6775_write_value(data, data->REG_TARGET[nr],
2285 data->target_temp[nr]);
2286 /* intentional */
2287 default:
2288 reg = nct6775_read_value(data, data->REG_FAN_MODE[nr]);
2289 reg = (reg & ~data->tolerance_mask) |
2290 data->temp_tolerance[0][nr];
2291 nct6775_write_value(data, data->REG_FAN_MODE[nr], reg);
2292 break;
2293 }
2294 }
2295
2296 static ssize_t
2297 show_pwm_enable(struct device *dev, struct device_attribute *attr, char *buf)
2298 {
2299 struct nct6775_data *data = nct6775_update_device(dev);
2300 struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
2301
2302 return sprintf(buf, "%d\n", data->pwm_enable[sattr->index]);
2303 }
2304
2305 static ssize_t
2306 store_pwm_enable(struct device *dev, struct device_attribute *attr,
2307 const char *buf, size_t count)
2308 {
2309 struct nct6775_data *data = dev_get_drvdata(dev);
2310 struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
2311 int nr = sattr->index;
2312 unsigned long val;
2313 int err;
2314 u16 reg;
2315
2316 err = kstrtoul(buf, 10, &val);
2317 if (err < 0)
2318 return err;
2319
2320 if (val > sf4)
2321 return -EINVAL;
2322
2323 if (val == sf3 && data->kind != nct6775)
2324 return -EINVAL;
2325
2326 if (val == sf4 && check_trip_points(data, nr)) {
2327 dev_err(dev, "Inconsistent trip points, not switching to SmartFan IV mode\n");
2328 dev_err(dev, "Adjust trip points and try again\n");
2329 return -EINVAL;
2330 }
2331
2332 mutex_lock(&data->update_lock);
2333 data->pwm_enable[nr] = val;
2334 if (val == off) {
2335 /*
2336 * turn off pwm control: select manual mode, set pwm to maximum
2337 */
2338 data->pwm[0][nr] = 255;
2339 nct6775_write_value(data, data->REG_PWM[0][nr], 255);
2340 }
2341 pwm_update_registers(data, nr);
2342 reg = nct6775_read_value(data, data->REG_FAN_MODE[nr]);
2343 reg &= 0x0f;
2344 reg |= pwm_enable_to_reg(val) << 4;
2345 nct6775_write_value(data, data->REG_FAN_MODE[nr], reg);
2346 mutex_unlock(&data->update_lock);
2347 return count;
2348 }
2349
2350 static ssize_t
2351 show_pwm_temp_sel_common(struct nct6775_data *data, char *buf, int src)
2352 {
2353 int i, sel = 0;
2354
2355 for (i = 0; i < NUM_TEMP; i++) {
2356 if (!(data->have_temp & (1 << i)))
2357 continue;
2358 if (src == data->temp_src[i]) {
2359 sel = i + 1;
2360 break;
2361 }
2362 }
2363
2364 return sprintf(buf, "%d\n", sel);
2365 }
2366
2367 static ssize_t
2368 show_pwm_temp_sel(struct device *dev, struct device_attribute *attr, char *buf)
2369 {
2370 struct nct6775_data *data = nct6775_update_device(dev);
2371 struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
2372 int index = sattr->index;
2373
2374 return show_pwm_temp_sel_common(data, buf, data->pwm_temp_sel[index]);
2375 }
2376
2377 static ssize_t
2378 store_pwm_temp_sel(struct device *dev, struct device_attribute *attr,
2379 const char *buf, size_t count)
2380 {
2381 struct nct6775_data *data = nct6775_update_device(dev);
2382 struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
2383 int nr = sattr->index;
2384 unsigned long val;
2385 int err, reg, src;
2386
2387 err = kstrtoul(buf, 10, &val);
2388 if (err < 0)
2389 return err;
2390 if (val == 0 || val > NUM_TEMP)
2391 return -EINVAL;
2392 if (!(data->have_temp & (1 << (val - 1))) || !data->temp_src[val - 1])
2393 return -EINVAL;
2394
2395 mutex_lock(&data->update_lock);
2396 src = data->temp_src[val - 1];
2397 data->pwm_temp_sel[nr] = src;
2398 reg = nct6775_read_value(data, data->REG_TEMP_SEL[nr]);
2399 reg &= 0xe0;
2400 reg |= src;
2401 nct6775_write_value(data, data->REG_TEMP_SEL[nr], reg);
2402 mutex_unlock(&data->update_lock);
2403
2404 return count;
2405 }
2406
2407 static ssize_t
2408 show_pwm_weight_temp_sel(struct device *dev, struct device_attribute *attr,
2409 char *buf)
2410 {
2411 struct nct6775_data *data = nct6775_update_device(dev);
2412 struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
2413 int index = sattr->index;
2414
2415 return show_pwm_temp_sel_common(data, buf,
2416 data->pwm_weight_temp_sel[index]);
2417 }
2418
2419 static ssize_t
2420 store_pwm_weight_temp_sel(struct device *dev, struct device_attribute *attr,
2421 const char *buf, size_t count)
2422 {
2423 struct nct6775_data *data = nct6775_update_device(dev);
2424 struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
2425 int nr = sattr->index;
2426 unsigned long val;
2427 int err, reg, src;
2428
2429 err = kstrtoul(buf, 10, &val);
2430 if (err < 0)
2431 return err;
2432 if (val > NUM_TEMP)
2433 return -EINVAL;
2434 if (val && (!(data->have_temp & (1 << (val - 1))) ||
2435 !data->temp_src[val - 1]))
2436 return -EINVAL;
2437
2438 mutex_lock(&data->update_lock);
2439 if (val) {
2440 src = data->temp_src[val - 1];
2441 data->pwm_weight_temp_sel[nr] = src;
2442 reg = nct6775_read_value(data, data->REG_WEIGHT_TEMP_SEL[nr]);
2443 reg &= 0xe0;
2444 reg |= (src | 0x80);
2445 nct6775_write_value(data, data->REG_WEIGHT_TEMP_SEL[nr], reg);
2446 } else {
2447 data->pwm_weight_temp_sel[nr] = 0;
2448 reg = nct6775_read_value(data, data->REG_WEIGHT_TEMP_SEL[nr]);
2449 reg &= 0x7f;
2450 nct6775_write_value(data, data->REG_WEIGHT_TEMP_SEL[nr], reg);
2451 }
2452 mutex_unlock(&data->update_lock);
2453
2454 return count;
2455 }
2456
2457 static ssize_t
2458 show_target_temp(struct device *dev, struct device_attribute *attr, char *buf)
2459 {
2460 struct nct6775_data *data = nct6775_update_device(dev);
2461 struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
2462
2463 return sprintf(buf, "%d\n", data->target_temp[sattr->index] * 1000);
2464 }
2465
2466 static ssize_t
2467 store_target_temp(struct device *dev, struct device_attribute *attr,
2468 const char *buf, size_t count)
2469 {
2470 struct nct6775_data *data = dev_get_drvdata(dev);
2471 struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
2472 int nr = sattr->index;
2473 unsigned long val;
2474 int err;
2475
2476 err = kstrtoul(buf, 10, &val);
2477 if (err < 0)
2478 return err;
2479
2480 val = clamp_val(DIV_ROUND_CLOSEST(val, 1000), 0,
2481 data->target_temp_mask);
2482
2483 mutex_lock(&data->update_lock);
2484 data->target_temp[nr] = val;
2485 pwm_update_registers(data, nr);
2486 mutex_unlock(&data->update_lock);
2487 return count;
2488 }
2489
2490 static ssize_t
2491 show_target_speed(struct device *dev, struct device_attribute *attr, char *buf)
2492 {
2493 struct nct6775_data *data = nct6775_update_device(dev);
2494 struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
2495 int nr = sattr->index;
2496
2497 return sprintf(buf, "%d\n",
2498 fan_from_reg16(data->target_speed[nr],
2499 data->fan_div[nr]));
2500 }
2501
2502 static ssize_t
2503 store_target_speed(struct device *dev, struct device_attribute *attr,
2504 const char *buf, size_t count)
2505 {
2506 struct nct6775_data *data = dev_get_drvdata(dev);
2507 struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
2508 int nr = sattr->index;
2509 unsigned long val;
2510 int err;
2511 u16 speed;
2512
2513 err = kstrtoul(buf, 10, &val);
2514 if (err < 0)
2515 return err;
2516
2517 val = clamp_val(val, 0, 1350000U);
2518 speed = fan_to_reg(val, data->fan_div[nr]);
2519
2520 mutex_lock(&data->update_lock);
2521 data->target_speed[nr] = speed;
2522 pwm_update_registers(data, nr);
2523 mutex_unlock(&data->update_lock);
2524 return count;
2525 }
2526
2527 static ssize_t
2528 show_temp_tolerance(struct device *dev, struct device_attribute *attr,
2529 char *buf)
2530 {
2531 struct nct6775_data *data = nct6775_update_device(dev);
2532 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
2533 int nr = sattr->nr;
2534 int index = sattr->index;
2535
2536 return sprintf(buf, "%d\n", data->temp_tolerance[index][nr] * 1000);
2537 }
2538
2539 static ssize_t
2540 store_temp_tolerance(struct device *dev, struct device_attribute *attr,
2541 const char *buf, size_t count)
2542 {
2543 struct nct6775_data *data = dev_get_drvdata(dev);
2544 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
2545 int nr = sattr->nr;
2546 int index = sattr->index;
2547 unsigned long val;
2548 int err;
2549
2550 err = kstrtoul(buf, 10, &val);
2551 if (err < 0)
2552 return err;
2553
2554 /* Limit tolerance as needed */
2555 val = clamp_val(DIV_ROUND_CLOSEST(val, 1000), 0, data->tolerance_mask);
2556
2557 mutex_lock(&data->update_lock);
2558 data->temp_tolerance[index][nr] = val;
2559 if (index)
2560 pwm_update_registers(data, nr);
2561 else
2562 nct6775_write_value(data,
2563 data->REG_CRITICAL_TEMP_TOLERANCE[nr],
2564 val);
2565 mutex_unlock(&data->update_lock);
2566 return count;
2567 }
2568
2569 /*
2570 * Fan speed tolerance is a tricky beast, since the associated register is
2571 * a tick counter, but the value is reported and configured as rpm.
2572 * Compute resulting low and high rpm values and report the difference.
2573 */
2574 static ssize_t
2575 show_speed_tolerance(struct device *dev, struct device_attribute *attr,
2576 char *buf)
2577 {
2578 struct nct6775_data *data = nct6775_update_device(dev);
2579 struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
2580 int nr = sattr->index;
2581 int low = data->target_speed[nr] - data->target_speed_tolerance[nr];
2582 int high = data->target_speed[nr] + data->target_speed_tolerance[nr];
2583 int tolerance;
2584
2585 if (low <= 0)
2586 low = 1;
2587 if (high > 0xffff)
2588 high = 0xffff;
2589 if (high < low)
2590 high = low;
2591
2592 tolerance = (fan_from_reg16(low, data->fan_div[nr])
2593 - fan_from_reg16(high, data->fan_div[nr])) / 2;
2594
2595 return sprintf(buf, "%d\n", tolerance);
2596 }
2597
2598 static ssize_t
2599 store_speed_tolerance(struct device *dev, struct device_attribute *attr,
2600 const char *buf, size_t count)
2601 {
2602 struct nct6775_data *data = dev_get_drvdata(dev);
2603 struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
2604 int nr = sattr->index;
2605 unsigned long val;
2606 int err;
2607 int low, high;
2608
2609 err = kstrtoul(buf, 10, &val);
2610 if (err < 0)
2611 return err;
2612
2613 high = fan_from_reg16(data->target_speed[nr],
2614 data->fan_div[nr]) + val;
2615 low = fan_from_reg16(data->target_speed[nr],
2616 data->fan_div[nr]) - val;
2617 if (low <= 0)
2618 low = 1;
2619 if (high < low)
2620 high = low;
2621
2622 val = (fan_to_reg(low, data->fan_div[nr]) -
2623 fan_to_reg(high, data->fan_div[nr])) / 2;
2624
2625 /* Limit tolerance as needed */
2626 val = clamp_val(val, 0, data->speed_tolerance_limit);
2627
2628 mutex_lock(&data->update_lock);
2629 data->target_speed_tolerance[nr] = val;
2630 pwm_update_registers(data, nr);
2631 mutex_unlock(&data->update_lock);
2632 return count;
2633 }
2634
2635 SENSOR_TEMPLATE_2(pwm, "pwm%d", S_IWUSR | S_IRUGO, show_pwm, store_pwm, 0, 0);
2636 SENSOR_TEMPLATE(pwm_mode, "pwm%d_mode", S_IWUSR | S_IRUGO, show_pwm_mode,
2637 store_pwm_mode, 0);
2638 SENSOR_TEMPLATE(pwm_enable, "pwm%d_enable", S_IWUSR | S_IRUGO, show_pwm_enable,
2639 store_pwm_enable, 0);
2640 SENSOR_TEMPLATE(pwm_temp_sel, "pwm%d_temp_sel", S_IWUSR | S_IRUGO,
2641 show_pwm_temp_sel, store_pwm_temp_sel, 0);
2642 SENSOR_TEMPLATE(pwm_target_temp, "pwm%d_target_temp", S_IWUSR | S_IRUGO,
2643 show_target_temp, store_target_temp, 0);
2644 SENSOR_TEMPLATE(fan_target, "fan%d_target", S_IWUSR | S_IRUGO,
2645 show_target_speed, store_target_speed, 0);
2646 SENSOR_TEMPLATE(fan_tolerance, "fan%d_tolerance", S_IWUSR | S_IRUGO,
2647 show_speed_tolerance, store_speed_tolerance, 0);
2648
2649 /* Smart Fan registers */
2650
2651 static ssize_t
2652 show_weight_temp(struct device *dev, struct device_attribute *attr, char *buf)
2653 {
2654 struct nct6775_data *data = nct6775_update_device(dev);
2655 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
2656 int nr = sattr->nr;
2657 int index = sattr->index;
2658
2659 return sprintf(buf, "%d\n", data->weight_temp[index][nr] * 1000);
2660 }
2661
2662 static ssize_t
2663 store_weight_temp(struct device *dev, struct device_attribute *attr,
2664 const char *buf, size_t count)
2665 {
2666 struct nct6775_data *data = dev_get_drvdata(dev);
2667 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
2668 int nr = sattr->nr;
2669 int index = sattr->index;
2670 unsigned long val;
2671 int err;
2672
2673 err = kstrtoul(buf, 10, &val);
2674 if (err < 0)
2675 return err;
2676
2677 val = clamp_val(DIV_ROUND_CLOSEST(val, 1000), 0, 255);
2678
2679 mutex_lock(&data->update_lock);
2680 data->weight_temp[index][nr] = val;
2681 nct6775_write_value(data, data->REG_WEIGHT_TEMP[index][nr], val);
2682 mutex_unlock(&data->update_lock);
2683 return count;
2684 }
2685
2686 SENSOR_TEMPLATE(pwm_weight_temp_sel, "pwm%d_weight_temp_sel", S_IWUSR | S_IRUGO,
2687 show_pwm_weight_temp_sel, store_pwm_weight_temp_sel, 0);
2688 SENSOR_TEMPLATE_2(pwm_weight_temp_step, "pwm%d_weight_temp_step",
2689 S_IWUSR | S_IRUGO, show_weight_temp, store_weight_temp, 0, 0);
2690 SENSOR_TEMPLATE_2(pwm_weight_temp_step_tol, "pwm%d_weight_temp_step_tol",
2691 S_IWUSR | S_IRUGO, show_weight_temp, store_weight_temp, 0, 1);
2692 SENSOR_TEMPLATE_2(pwm_weight_temp_step_base, "pwm%d_weight_temp_step_base",
2693 S_IWUSR | S_IRUGO, show_weight_temp, store_weight_temp, 0, 2);
2694 SENSOR_TEMPLATE_2(pwm_weight_duty_step, "pwm%d_weight_duty_step",
2695 S_IWUSR | S_IRUGO, show_pwm, store_pwm, 0, 5);
2696 SENSOR_TEMPLATE_2(pwm_weight_duty_base, "pwm%d_weight_duty_base",
2697 S_IWUSR | S_IRUGO, show_pwm, store_pwm, 0, 6);
2698
2699 static ssize_t
2700 show_fan_time(struct device *dev, struct device_attribute *attr, char *buf)
2701 {
2702 struct nct6775_data *data = nct6775_update_device(dev);
2703 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
2704 int nr = sattr->nr;
2705 int index = sattr->index;
2706
2707 return sprintf(buf, "%d\n",
2708 step_time_from_reg(data->fan_time[index][nr],
2709 data->pwm_mode[nr]));
2710 }
2711
2712 static ssize_t
2713 store_fan_time(struct device *dev, struct device_attribute *attr,
2714 const char *buf, size_t count)
2715 {
2716 struct nct6775_data *data = dev_get_drvdata(dev);
2717 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
2718 int nr = sattr->nr;
2719 int index = sattr->index;
2720 unsigned long val;
2721 int err;
2722
2723 err = kstrtoul(buf, 10, &val);
2724 if (err < 0)
2725 return err;
2726
2727 val = step_time_to_reg(val, data->pwm_mode[nr]);
2728 mutex_lock(&data->update_lock);
2729 data->fan_time[index][nr] = val;
2730 nct6775_write_value(data, data->REG_FAN_TIME[index][nr], val);
2731 mutex_unlock(&data->update_lock);
2732 return count;
2733 }
2734
2735 static ssize_t
2736 show_auto_pwm(struct device *dev, struct device_attribute *attr, char *buf)
2737 {
2738 struct nct6775_data *data = nct6775_update_device(dev);
2739 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
2740
2741 return sprintf(buf, "%d\n", data->auto_pwm[sattr->nr][sattr->index]);
2742 }
2743
2744 static ssize_t
2745 store_auto_pwm(struct device *dev, struct device_attribute *attr,
2746 const char *buf, size_t count)
2747 {
2748 struct nct6775_data *data = dev_get_drvdata(dev);
2749 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
2750 int nr = sattr->nr;
2751 int point = sattr->index;
2752 unsigned long val;
2753 int err;
2754 u8 reg;
2755
2756 err = kstrtoul(buf, 10, &val);
2757 if (err < 0)
2758 return err;
2759 if (val > 255)
2760 return -EINVAL;
2761
2762 if (point == data->auto_pwm_num) {
2763 if (data->kind != nct6775 && !val)
2764 return -EINVAL;
2765 if (data->kind != nct6779 && val)
2766 val = 0xff;
2767 }
2768
2769 mutex_lock(&data->update_lock);
2770 data->auto_pwm[nr][point] = val;
2771 if (point < data->auto_pwm_num) {
2772 nct6775_write_value(data,
2773 NCT6775_AUTO_PWM(data, nr, point),
2774 data->auto_pwm[nr][point]);
2775 } else {
2776 switch (data->kind) {
2777 case nct6775:
2778 /* disable if needed (pwm == 0) */
2779 reg = nct6775_read_value(data,
2780 NCT6775_REG_CRITICAL_ENAB[nr]);
2781 if (val)
2782 reg |= 0x02;
2783 else
2784 reg &= ~0x02;
2785 nct6775_write_value(data, NCT6775_REG_CRITICAL_ENAB[nr],
2786 reg);
2787 break;
2788 case nct6776:
2789 break; /* always enabled, nothing to do */
2790 case nct6106:
2791 case nct6779:
2792 case nct6791:
2793 nct6775_write_value(data, data->REG_CRITICAL_PWM[nr],
2794 val);
2795 reg = nct6775_read_value(data,
2796 data->REG_CRITICAL_PWM_ENABLE[nr]);
2797 if (val == 255)
2798 reg &= ~data->CRITICAL_PWM_ENABLE_MASK;
2799 else
2800 reg |= data->CRITICAL_PWM_ENABLE_MASK;
2801 nct6775_write_value(data,
2802 data->REG_CRITICAL_PWM_ENABLE[nr],
2803 reg);
2804 break;
2805 }
2806 }
2807 mutex_unlock(&data->update_lock);
2808 return count;
2809 }
2810
2811 static ssize_t
2812 show_auto_temp(struct device *dev, struct device_attribute *attr, char *buf)
2813 {
2814 struct nct6775_data *data = nct6775_update_device(dev);
2815 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
2816 int nr = sattr->nr;
2817 int point = sattr->index;
2818
2819 /*
2820 * We don't know for sure if the temperature is signed or unsigned.
2821 * Assume it is unsigned.
2822 */
2823 return sprintf(buf, "%d\n", data->auto_temp[nr][point] * 1000);
2824 }
2825
2826 static ssize_t
2827 store_auto_temp(struct device *dev, struct device_attribute *attr,
2828 const char *buf, size_t count)
2829 {
2830 struct nct6775_data *data = dev_get_drvdata(dev);
2831 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
2832 int nr = sattr->nr;
2833 int point = sattr->index;
2834 unsigned long val;
2835 int err;
2836
2837 err = kstrtoul(buf, 10, &val);
2838 if (err)
2839 return err;
2840 if (val > 255000)
2841 return -EINVAL;
2842
2843 mutex_lock(&data->update_lock);
2844 data->auto_temp[nr][point] = DIV_ROUND_CLOSEST(val, 1000);
2845 if (point < data->auto_pwm_num) {
2846 nct6775_write_value(data,
2847 NCT6775_AUTO_TEMP(data, nr, point),
2848 data->auto_temp[nr][point]);
2849 } else {
2850 nct6775_write_value(data, data->REG_CRITICAL_TEMP[nr],
2851 data->auto_temp[nr][point]);
2852 }
2853 mutex_unlock(&data->update_lock);
2854 return count;
2855 }
2856
2857 static umode_t nct6775_pwm_is_visible(struct kobject *kobj,
2858 struct attribute *attr, int index)
2859 {
2860 struct device *dev = container_of(kobj, struct device, kobj);
2861 struct nct6775_data *data = dev_get_drvdata(dev);
2862 int pwm = index / 36; /* pwm index */
2863 int nr = index % 36; /* attribute index */
2864
2865 if (!(data->has_pwm & (1 << pwm)))
2866 return 0;
2867
2868 if ((nr >= 14 && nr <= 18) || nr == 21) /* weight */
2869 if (!data->REG_WEIGHT_TEMP_SEL[pwm])
2870 return 0;
2871 if (nr == 19 && data->REG_PWM[3] == NULL) /* pwm_max */
2872 return 0;
2873 if (nr == 20 && data->REG_PWM[4] == NULL) /* pwm_step */
2874 return 0;
2875 if (nr == 21 && data->REG_PWM[6] == NULL) /* weight_duty_base */
2876 return 0;
2877
2878 if (nr >= 22 && nr <= 35) { /* auto point */
2879 int api = (nr - 22) / 2; /* auto point index */
2880
2881 if (api > data->auto_pwm_num)
2882 return 0;
2883 }
2884 return attr->mode;
2885 }
2886
2887 SENSOR_TEMPLATE_2(pwm_stop_time, "pwm%d_stop_time", S_IWUSR | S_IRUGO,
2888 show_fan_time, store_fan_time, 0, 0);
2889 SENSOR_TEMPLATE_2(pwm_step_up_time, "pwm%d_step_up_time", S_IWUSR | S_IRUGO,
2890 show_fan_time, store_fan_time, 0, 1);
2891 SENSOR_TEMPLATE_2(pwm_step_down_time, "pwm%d_step_down_time", S_IWUSR | S_IRUGO,
2892 show_fan_time, store_fan_time, 0, 2);
2893 SENSOR_TEMPLATE_2(pwm_start, "pwm%d_start", S_IWUSR | S_IRUGO, show_pwm,
2894 store_pwm, 0, 1);
2895 SENSOR_TEMPLATE_2(pwm_floor, "pwm%d_floor", S_IWUSR | S_IRUGO, show_pwm,
2896 store_pwm, 0, 2);
2897 SENSOR_TEMPLATE_2(pwm_temp_tolerance, "pwm%d_temp_tolerance", S_IWUSR | S_IRUGO,
2898 show_temp_tolerance, store_temp_tolerance, 0, 0);
2899 SENSOR_TEMPLATE_2(pwm_crit_temp_tolerance, "pwm%d_crit_temp_tolerance",
2900 S_IWUSR | S_IRUGO, show_temp_tolerance, store_temp_tolerance,
2901 0, 1);
2902
2903 SENSOR_TEMPLATE_2(pwm_max, "pwm%d_max", S_IWUSR | S_IRUGO, show_pwm, store_pwm,
2904 0, 3);
2905
2906 SENSOR_TEMPLATE_2(pwm_step, "pwm%d_step", S_IWUSR | S_IRUGO, show_pwm,
2907 store_pwm, 0, 4);
2908
2909 SENSOR_TEMPLATE_2(pwm_auto_point1_pwm, "pwm%d_auto_point1_pwm",
2910 S_IWUSR | S_IRUGO, show_auto_pwm, store_auto_pwm, 0, 0);
2911 SENSOR_TEMPLATE_2(pwm_auto_point1_temp, "pwm%d_auto_point1_temp",
2912 S_IWUSR | S_IRUGO, show_auto_temp, store_auto_temp, 0, 0);
2913
2914 SENSOR_TEMPLATE_2(pwm_auto_point2_pwm, "pwm%d_auto_point2_pwm",
2915 S_IWUSR | S_IRUGO, show_auto_pwm, store_auto_pwm, 0, 1);
2916 SENSOR_TEMPLATE_2(pwm_auto_point2_temp, "pwm%d_auto_point2_temp",
2917 S_IWUSR | S_IRUGO, show_auto_temp, store_auto_temp, 0, 1);
2918
2919 SENSOR_TEMPLATE_2(pwm_auto_point3_pwm, "pwm%d_auto_point3_pwm",
2920 S_IWUSR | S_IRUGO, show_auto_pwm, store_auto_pwm, 0, 2);
2921 SENSOR_TEMPLATE_2(pwm_auto_point3_temp, "pwm%d_auto_point3_temp",
2922 S_IWUSR | S_IRUGO, show_auto_temp, store_auto_temp, 0, 2);
2923
2924 SENSOR_TEMPLATE_2(pwm_auto_point4_pwm, "pwm%d_auto_point4_pwm",
2925 S_IWUSR | S_IRUGO, show_auto_pwm, store_auto_pwm, 0, 3);
2926 SENSOR_TEMPLATE_2(pwm_auto_point4_temp, "pwm%d_auto_point4_temp",
2927 S_IWUSR | S_IRUGO, show_auto_temp, store_auto_temp, 0, 3);
2928
2929 SENSOR_TEMPLATE_2(pwm_auto_point5_pwm, "pwm%d_auto_point5_pwm",
2930 S_IWUSR | S_IRUGO, show_auto_pwm, store_auto_pwm, 0, 4);
2931 SENSOR_TEMPLATE_2(pwm_auto_point5_temp, "pwm%d_auto_point5_temp",
2932 S_IWUSR | S_IRUGO, show_auto_temp, store_auto_temp, 0, 4);
2933
2934 SENSOR_TEMPLATE_2(pwm_auto_point6_pwm, "pwm%d_auto_point6_pwm",
2935 S_IWUSR | S_IRUGO, show_auto_pwm, store_auto_pwm, 0, 5);
2936 SENSOR_TEMPLATE_2(pwm_auto_point6_temp, "pwm%d_auto_point6_temp",
2937 S_IWUSR | S_IRUGO, show_auto_temp, store_auto_temp, 0, 5);
2938
2939 SENSOR_TEMPLATE_2(pwm_auto_point7_pwm, "pwm%d_auto_point7_pwm",
2940 S_IWUSR | S_IRUGO, show_auto_pwm, store_auto_pwm, 0, 6);
2941 SENSOR_TEMPLATE_2(pwm_auto_point7_temp, "pwm%d_auto_point7_temp",
2942 S_IWUSR | S_IRUGO, show_auto_temp, store_auto_temp, 0, 6);
2943
2944 /*
2945 * nct6775_pwm_is_visible uses the index into the following array
2946 * to determine if attributes should be created or not.
2947 * Any change in order or content must be matched.
2948 */
2949 static struct sensor_device_template *nct6775_attributes_pwm_template[] = {
2950 &sensor_dev_template_pwm,
2951 &sensor_dev_template_pwm_mode,
2952 &sensor_dev_template_pwm_enable,
2953 &sensor_dev_template_pwm_temp_sel,
2954 &sensor_dev_template_pwm_temp_tolerance,
2955 &sensor_dev_template_pwm_crit_temp_tolerance,
2956 &sensor_dev_template_pwm_target_temp,
2957 &sensor_dev_template_fan_target,
2958 &sensor_dev_template_fan_tolerance,
2959 &sensor_dev_template_pwm_stop_time,
2960 &sensor_dev_template_pwm_step_up_time,
2961 &sensor_dev_template_pwm_step_down_time,
2962 &sensor_dev_template_pwm_start,
2963 &sensor_dev_template_pwm_floor,
2964 &sensor_dev_template_pwm_weight_temp_sel, /* 14 */
2965 &sensor_dev_template_pwm_weight_temp_step,
2966 &sensor_dev_template_pwm_weight_temp_step_tol,
2967 &sensor_dev_template_pwm_weight_temp_step_base,
2968 &sensor_dev_template_pwm_weight_duty_step, /* 18 */
2969 &sensor_dev_template_pwm_max, /* 19 */
2970 &sensor_dev_template_pwm_step, /* 20 */
2971 &sensor_dev_template_pwm_weight_duty_base, /* 21 */
2972 &sensor_dev_template_pwm_auto_point1_pwm, /* 22 */
2973 &sensor_dev_template_pwm_auto_point1_temp,
2974 &sensor_dev_template_pwm_auto_point2_pwm,
2975 &sensor_dev_template_pwm_auto_point2_temp,
2976 &sensor_dev_template_pwm_auto_point3_pwm,
2977 &sensor_dev_template_pwm_auto_point3_temp,
2978 &sensor_dev_template_pwm_auto_point4_pwm,
2979 &sensor_dev_template_pwm_auto_point4_temp,
2980 &sensor_dev_template_pwm_auto_point5_pwm,
2981 &sensor_dev_template_pwm_auto_point5_temp,
2982 &sensor_dev_template_pwm_auto_point6_pwm,
2983 &sensor_dev_template_pwm_auto_point6_temp,
2984 &sensor_dev_template_pwm_auto_point7_pwm,
2985 &sensor_dev_template_pwm_auto_point7_temp, /* 35 */
2986
2987 NULL
2988 };
2989
2990 static struct sensor_template_group nct6775_pwm_template_group = {
2991 .templates = nct6775_attributes_pwm_template,
2992 .is_visible = nct6775_pwm_is_visible,
2993 .base = 1,
2994 };
2995
2996 static ssize_t
2997 show_vid(struct device *dev, struct device_attribute *attr, char *buf)
2998 {
2999 struct nct6775_data *data = dev_get_drvdata(dev);
3000 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
3001 }
3002
3003 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
3004
3005 /* Case open detection */
3006
3007 static ssize_t
3008 clear_caseopen(struct device *dev, struct device_attribute *attr,
3009 const char *buf, size_t count)
3010 {
3011 struct nct6775_data *data = dev_get_drvdata(dev);
3012 int nr = to_sensor_dev_attr(attr)->index - INTRUSION_ALARM_BASE;
3013 unsigned long val;
3014 u8 reg;
3015 int ret;
3016
3017 if (kstrtoul(buf, 10, &val) || val != 0)
3018 return -EINVAL;
3019
3020 mutex_lock(&data->update_lock);
3021
3022 /*
3023 * Use CR registers to clear caseopen status.
3024 * The CR registers are the same for all chips, and not all chips
3025 * support clearing the caseopen status through "regular" registers.
3026 */
3027 ret = superio_enter(data->sioreg);
3028 if (ret) {
3029 count = ret;
3030 goto error;
3031 }
3032
3033 superio_select(data->sioreg, NCT6775_LD_ACPI);
3034 reg = superio_inb(data->sioreg, NCT6775_REG_CR_CASEOPEN_CLR[nr]);
3035 reg |= NCT6775_CR_CASEOPEN_CLR_MASK[nr];
3036 superio_outb(data->sioreg, NCT6775_REG_CR_CASEOPEN_CLR[nr], reg);
3037 reg &= ~NCT6775_CR_CASEOPEN_CLR_MASK[nr];
3038 superio_outb(data->sioreg, NCT6775_REG_CR_CASEOPEN_CLR[nr], reg);
3039 superio_exit(data->sioreg);
3040
3041 data->valid = false; /* Force cache refresh */
3042 error:
3043 mutex_unlock(&data->update_lock);
3044 return count;
3045 }
3046
3047 static SENSOR_DEVICE_ATTR(intrusion0_alarm, S_IWUSR | S_IRUGO, show_alarm,
3048 clear_caseopen, INTRUSION_ALARM_BASE);
3049 static SENSOR_DEVICE_ATTR(intrusion1_alarm, S_IWUSR | S_IRUGO, show_alarm,
3050 clear_caseopen, INTRUSION_ALARM_BASE + 1);
3051 static SENSOR_DEVICE_ATTR(intrusion0_beep, S_IWUSR | S_IRUGO, show_beep,
3052 store_beep, INTRUSION_ALARM_BASE);
3053 static SENSOR_DEVICE_ATTR(intrusion1_beep, S_IWUSR | S_IRUGO, show_beep,
3054 store_beep, INTRUSION_ALARM_BASE + 1);
3055 static SENSOR_DEVICE_ATTR(beep_enable, S_IWUSR | S_IRUGO, show_beep,
3056 store_beep, BEEP_ENABLE_BASE);
3057
3058 static umode_t nct6775_other_is_visible(struct kobject *kobj,
3059 struct attribute *attr, int index)
3060 {
3061 struct device *dev = container_of(kobj, struct device, kobj);
3062 struct nct6775_data *data = dev_get_drvdata(dev);
3063
3064 if (index == 0 && !data->have_vid)
3065 return 0;
3066
3067 if (index == 1 || index == 2) {
3068 if (data->ALARM_BITS[INTRUSION_ALARM_BASE + index - 1] < 0)
3069 return 0;
3070 }
3071
3072 if (index == 3 || index == 4) {
3073 if (data->BEEP_BITS[INTRUSION_ALARM_BASE + index - 3] < 0)
3074 return 0;
3075 }
3076
3077 return attr->mode;
3078 }
3079
3080 /*
3081 * nct6775_other_is_visible uses the index into the following array
3082 * to determine if attributes should be created or not.
3083 * Any change in order or content must be matched.
3084 */
3085 static struct attribute *nct6775_attributes_other[] = {
3086 &dev_attr_cpu0_vid.attr, /* 0 */
3087 &sensor_dev_attr_intrusion0_alarm.dev_attr.attr, /* 1 */
3088 &sensor_dev_attr_intrusion1_alarm.dev_attr.attr, /* 2 */
3089 &sensor_dev_attr_intrusion0_beep.dev_attr.attr, /* 3 */
3090 &sensor_dev_attr_intrusion1_beep.dev_attr.attr, /* 4 */
3091 &sensor_dev_attr_beep_enable.dev_attr.attr, /* 5 */
3092
3093 NULL
3094 };
3095
3096 static const struct attribute_group nct6775_group_other = {
3097 .attrs = nct6775_attributes_other,
3098 .is_visible = nct6775_other_is_visible,
3099 };
3100
3101 static inline void nct6775_init_device(struct nct6775_data *data)
3102 {
3103 int i;
3104 u8 tmp, diode;
3105
3106 /* Start monitoring if needed */
3107 if (data->REG_CONFIG) {
3108 tmp = nct6775_read_value(data, data->REG_CONFIG);
3109 if (!(tmp & 0x01))
3110 nct6775_write_value(data, data->REG_CONFIG, tmp | 0x01);
3111 }
3112
3113 /* Enable temperature sensors if needed */
3114 for (i = 0; i < NUM_TEMP; i++) {
3115 if (!(data->have_temp & (1 << i)))
3116 continue;
3117 if (!data->reg_temp_config[i])
3118 continue;
3119 tmp = nct6775_read_value(data, data->reg_temp_config[i]);
3120 if (tmp & 0x01)
3121 nct6775_write_value(data, data->reg_temp_config[i],
3122 tmp & 0xfe);
3123 }
3124
3125 /* Enable VBAT monitoring if needed */
3126 tmp = nct6775_read_value(data, data->REG_VBAT);
3127 if (!(tmp & 0x01))
3128 nct6775_write_value(data, data->REG_VBAT, tmp | 0x01);
3129
3130 diode = nct6775_read_value(data, data->REG_DIODE);
3131
3132 for (i = 0; i < data->temp_fixed_num; i++) {
3133 if (!(data->have_temp_fixed & (1 << i)))
3134 continue;
3135 if ((tmp & (data->DIODE_MASK << i))) /* diode */
3136 data->temp_type[i]
3137 = 3 - ((diode >> i) & data->DIODE_MASK);
3138 else /* thermistor */
3139 data->temp_type[i] = 4;
3140 }
3141 }
3142
3143 static void
3144 nct6775_check_fan_inputs(struct nct6775_data *data)
3145 {
3146 bool fan3pin, fan4pin, fan4min, fan5pin, fan6pin;
3147 bool pwm3pin, pwm4pin, pwm5pin, pwm6pin;
3148 int sioreg = data->sioreg;
3149 int regval;
3150
3151 /* fan4 and fan5 share some pins with the GPIO and serial flash */
3152 if (data->kind == nct6775) {
3153 regval = superio_inb(sioreg, 0x2c);
3154
3155 fan3pin = regval & (1 << 6);
3156 pwm3pin = regval & (1 << 7);
3157
3158 /* On NCT6775, fan4 shares pins with the fdc interface */
3159 fan4pin = !(superio_inb(sioreg, 0x2A) & 0x80);
3160 fan4min = false;
3161 fan5pin = false;
3162 fan6pin = false;
3163 pwm4pin = false;
3164 pwm5pin = false;
3165 pwm6pin = false;
3166 } else if (data->kind == nct6776) {
3167 bool gpok = superio_inb(sioreg, 0x27) & 0x80;
3168
3169 superio_select(sioreg, NCT6775_LD_HWM);
3170 regval = superio_inb(sioreg, SIO_REG_ENABLE);
3171
3172 if (regval & 0x80)
3173 fan3pin = gpok;
3174 else
3175 fan3pin = !(superio_inb(sioreg, 0x24) & 0x40);
3176
3177 if (regval & 0x40)
3178 fan4pin = gpok;
3179 else
3180 fan4pin = superio_inb(sioreg, 0x1C) & 0x01;
3181
3182 if (regval & 0x20)
3183 fan5pin = gpok;
3184 else
3185 fan5pin = superio_inb(sioreg, 0x1C) & 0x02;
3186
3187 fan4min = fan4pin;
3188 fan6pin = false;
3189 pwm3pin = fan3pin;
3190 pwm4pin = false;
3191 pwm5pin = false;
3192 pwm6pin = false;
3193 } else if (data->kind == nct6106) {
3194 regval = superio_inb(sioreg, 0x24);
3195 fan3pin = !(regval & 0x80);
3196 pwm3pin = regval & 0x08;
3197
3198 fan4pin = false;
3199 fan4min = false;
3200 fan5pin = false;
3201 fan6pin = false;
3202 pwm4pin = false;
3203 pwm5pin = false;
3204 pwm6pin = false;
3205 } else { /* NCT6779D or NCT6791D */
3206 regval = superio_inb(sioreg, 0x1c);
3207
3208 fan3pin = !(regval & (1 << 5));
3209 fan4pin = !(regval & (1 << 6));
3210 fan5pin = !(regval & (1 << 7));
3211
3212 pwm3pin = !(regval & (1 << 0));
3213 pwm4pin = !(regval & (1 << 1));
3214 pwm5pin = !(regval & (1 << 2));
3215
3216 fan4min = fan4pin;
3217
3218 if (data->kind == nct6791) {
3219 regval = superio_inb(sioreg, 0x2d);
3220 fan6pin = (regval & (1 << 1));
3221 pwm6pin = (regval & (1 << 0));
3222 } else { /* NCT6779D */
3223 fan6pin = false;
3224 pwm6pin = false;
3225 }
3226 }
3227
3228 /* fan 1 and 2 (0x03) are always present */
3229 data->has_fan = 0x03 | (fan3pin << 2) | (fan4pin << 3) |
3230 (fan5pin << 4) | (fan6pin << 5);
3231 data->has_fan_min = 0x03 | (fan3pin << 2) | (fan4min << 3) |
3232 (fan5pin << 4);
3233 data->has_pwm = 0x03 | (pwm3pin << 2) | (pwm4pin << 3) |
3234 (pwm5pin << 4) | (pwm6pin << 5);
3235 }
3236
3237 static void add_temp_sensors(struct nct6775_data *data, const u16 *regp,
3238 int *available, int *mask)
3239 {
3240 int i;
3241 u8 src;
3242
3243 for (i = 0; i < data->pwm_num && *available; i++) {
3244 int index;
3245
3246 if (!regp[i])
3247 continue;
3248 src = nct6775_read_value(data, regp[i]);
3249 src &= 0x1f;
3250 if (!src || (*mask & (1 << src)))
3251 continue;
3252 if (src >= data->temp_label_num ||
3253 !strlen(data->temp_label[src]))
3254 continue;
3255
3256 index = __ffs(*available);
3257 nct6775_write_value(data, data->REG_TEMP_SOURCE[index], src);
3258 *available &= ~(1 << index);
3259 *mask |= 1 << src;
3260 }
3261 }
3262
3263 static int nct6775_probe(struct platform_device *pdev)
3264 {
3265 struct device *dev = &pdev->dev;
3266 struct nct6775_sio_data *sio_data = dev_get_platdata(dev);
3267 struct nct6775_data *data;
3268 struct resource *res;
3269 int i, s, err = 0;
3270 int src, mask, available;
3271 const u16 *reg_temp, *reg_temp_over, *reg_temp_hyst, *reg_temp_config;
3272 const u16 *reg_temp_mon, *reg_temp_alternate, *reg_temp_crit;
3273 const u16 *reg_temp_crit_l = NULL, *reg_temp_crit_h = NULL;
3274 int num_reg_temp, num_reg_temp_mon;
3275 u8 cr2a;
3276 struct attribute_group *group;
3277 struct device *hwmon_dev;
3278 int num_attr_groups = 0;
3279
3280 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
3281 if (!devm_request_region(&pdev->dev, res->start, IOREGION_LENGTH,
3282 DRVNAME))
3283 return -EBUSY;
3284
3285 data = devm_kzalloc(&pdev->dev, sizeof(struct nct6775_data),
3286 GFP_KERNEL);
3287 if (!data)
3288 return -ENOMEM;
3289
3290 data->kind = sio_data->kind;
3291 data->sioreg = sio_data->sioreg;
3292 data->addr = res->start;
3293 mutex_init(&data->update_lock);
3294 data->name = nct6775_device_names[data->kind];
3295 data->bank = 0xff; /* Force initial bank selection */
3296 platform_set_drvdata(pdev, data);
3297
3298 switch (data->kind) {
3299 case nct6106:
3300 data->in_num = 9;
3301 data->pwm_num = 3;
3302 data->auto_pwm_num = 4;
3303 data->temp_fixed_num = 3;
3304 data->num_temp_alarms = 6;
3305 data->num_temp_beeps = 6;
3306
3307 data->fan_from_reg = fan_from_reg13;
3308 data->fan_from_reg_min = fan_from_reg13;
3309
3310 data->temp_label = nct6776_temp_label;
3311 data->temp_label_num = ARRAY_SIZE(nct6776_temp_label);
3312
3313 data->REG_VBAT = NCT6106_REG_VBAT;
3314 data->REG_DIODE = NCT6106_REG_DIODE;
3315 data->DIODE_MASK = NCT6106_DIODE_MASK;
3316 data->REG_VIN = NCT6106_REG_IN;
3317 data->REG_IN_MINMAX[0] = NCT6106_REG_IN_MIN;
3318 data->REG_IN_MINMAX[1] = NCT6106_REG_IN_MAX;
3319 data->REG_TARGET = NCT6106_REG_TARGET;
3320 data->REG_FAN = NCT6106_REG_FAN;
3321 data->REG_FAN_MODE = NCT6106_REG_FAN_MODE;
3322 data->REG_FAN_MIN = NCT6106_REG_FAN_MIN;
3323 data->REG_FAN_PULSES = NCT6106_REG_FAN_PULSES;
3324 data->FAN_PULSE_SHIFT = NCT6106_FAN_PULSE_SHIFT;
3325 data->REG_FAN_TIME[0] = NCT6106_REG_FAN_STOP_TIME;
3326 data->REG_FAN_TIME[1] = NCT6106_REG_FAN_STEP_UP_TIME;
3327 data->REG_FAN_TIME[2] = NCT6106_REG_FAN_STEP_DOWN_TIME;
3328 data->REG_PWM[0] = NCT6106_REG_PWM;
3329 data->REG_PWM[1] = NCT6106_REG_FAN_START_OUTPUT;
3330 data->REG_PWM[2] = NCT6106_REG_FAN_STOP_OUTPUT;
3331 data->REG_PWM[5] = NCT6106_REG_WEIGHT_DUTY_STEP;
3332 data->REG_PWM[6] = NCT6106_REG_WEIGHT_DUTY_BASE;
3333 data->REG_PWM_READ = NCT6106_REG_PWM_READ;
3334 data->REG_PWM_MODE = NCT6106_REG_PWM_MODE;
3335 data->PWM_MODE_MASK = NCT6106_PWM_MODE_MASK;
3336 data->REG_AUTO_TEMP = NCT6106_REG_AUTO_TEMP;
3337 data->REG_AUTO_PWM = NCT6106_REG_AUTO_PWM;
3338 data->REG_CRITICAL_TEMP = NCT6106_REG_CRITICAL_TEMP;
3339 data->REG_CRITICAL_TEMP_TOLERANCE
3340 = NCT6106_REG_CRITICAL_TEMP_TOLERANCE;
3341 data->REG_CRITICAL_PWM_ENABLE = NCT6106_REG_CRITICAL_PWM_ENABLE;
3342 data->CRITICAL_PWM_ENABLE_MASK
3343 = NCT6106_CRITICAL_PWM_ENABLE_MASK;
3344 data->REG_CRITICAL_PWM = NCT6106_REG_CRITICAL_PWM;
3345 data->REG_TEMP_OFFSET = NCT6106_REG_TEMP_OFFSET;
3346 data->REG_TEMP_SOURCE = NCT6106_REG_TEMP_SOURCE;
3347 data->REG_TEMP_SEL = NCT6106_REG_TEMP_SEL;
3348 data->REG_WEIGHT_TEMP_SEL = NCT6106_REG_WEIGHT_TEMP_SEL;
3349 data->REG_WEIGHT_TEMP[0] = NCT6106_REG_WEIGHT_TEMP_STEP;
3350 data->REG_WEIGHT_TEMP[1] = NCT6106_REG_WEIGHT_TEMP_STEP_TOL;
3351 data->REG_WEIGHT_TEMP[2] = NCT6106_REG_WEIGHT_TEMP_BASE;
3352 data->REG_ALARM = NCT6106_REG_ALARM;
3353 data->ALARM_BITS = NCT6106_ALARM_BITS;
3354 data->REG_BEEP = NCT6106_REG_BEEP;
3355 data->BEEP_BITS = NCT6106_BEEP_BITS;
3356
3357 reg_temp = NCT6106_REG_TEMP;
3358 reg_temp_mon = NCT6106_REG_TEMP_MON;
3359 num_reg_temp = ARRAY_SIZE(NCT6106_REG_TEMP);
3360 num_reg_temp_mon = ARRAY_SIZE(NCT6106_REG_TEMP_MON);
3361 reg_temp_over = NCT6106_REG_TEMP_OVER;
3362 reg_temp_hyst = NCT6106_REG_TEMP_HYST;
3363 reg_temp_config = NCT6106_REG_TEMP_CONFIG;
3364 reg_temp_alternate = NCT6106_REG_TEMP_ALTERNATE;
3365 reg_temp_crit = NCT6106_REG_TEMP_CRIT;
3366 reg_temp_crit_l = NCT6106_REG_TEMP_CRIT_L;
3367 reg_temp_crit_h = NCT6106_REG_TEMP_CRIT_H;
3368
3369 break;
3370 case nct6775:
3371 data->in_num = 9;
3372 data->pwm_num = 3;
3373 data->auto_pwm_num = 6;
3374 data->has_fan_div = true;
3375 data->temp_fixed_num = 3;
3376 data->num_temp_alarms = 3;
3377 data->num_temp_beeps = 3;
3378
3379 data->ALARM_BITS = NCT6775_ALARM_BITS;
3380 data->BEEP_BITS = NCT6775_BEEP_BITS;
3381
3382 data->fan_from_reg = fan_from_reg16;
3383 data->fan_from_reg_min = fan_from_reg8;
3384 data->target_temp_mask = 0x7f;
3385 data->tolerance_mask = 0x0f;
3386 data->speed_tolerance_limit = 15;
3387
3388 data->temp_label = nct6775_temp_label;
3389 data->temp_label_num = ARRAY_SIZE(nct6775_temp_label);
3390
3391 data->REG_CONFIG = NCT6775_REG_CONFIG;
3392 data->REG_VBAT = NCT6775_REG_VBAT;
3393 data->REG_DIODE = NCT6775_REG_DIODE;
3394 data->DIODE_MASK = NCT6775_DIODE_MASK;
3395 data->REG_VIN = NCT6775_REG_IN;
3396 data->REG_IN_MINMAX[0] = NCT6775_REG_IN_MIN;
3397 data->REG_IN_MINMAX[1] = NCT6775_REG_IN_MAX;
3398 data->REG_TARGET = NCT6775_REG_TARGET;
3399 data->REG_FAN = NCT6775_REG_FAN;
3400 data->REG_FAN_MODE = NCT6775_REG_FAN_MODE;
3401 data->REG_FAN_MIN = NCT6775_REG_FAN_MIN;
3402 data->REG_FAN_PULSES = NCT6775_REG_FAN_PULSES;
3403 data->FAN_PULSE_SHIFT = NCT6775_FAN_PULSE_SHIFT;
3404 data->REG_FAN_TIME[0] = NCT6775_REG_FAN_STOP_TIME;
3405 data->REG_FAN_TIME[1] = NCT6775_REG_FAN_STEP_UP_TIME;
3406 data->REG_FAN_TIME[2] = NCT6775_REG_FAN_STEP_DOWN_TIME;
3407 data->REG_PWM[0] = NCT6775_REG_PWM;
3408 data->REG_PWM[1] = NCT6775_REG_FAN_START_OUTPUT;
3409 data->REG_PWM[2] = NCT6775_REG_FAN_STOP_OUTPUT;
3410 data->REG_PWM[3] = NCT6775_REG_FAN_MAX_OUTPUT;
3411 data->REG_PWM[4] = NCT6775_REG_FAN_STEP_OUTPUT;
3412 data->REG_PWM[5] = NCT6775_REG_WEIGHT_DUTY_STEP;
3413 data->REG_PWM_READ = NCT6775_REG_PWM_READ;
3414 data->REG_PWM_MODE = NCT6775_REG_PWM_MODE;
3415 data->PWM_MODE_MASK = NCT6775_PWM_MODE_MASK;
3416 data->REG_AUTO_TEMP = NCT6775_REG_AUTO_TEMP;
3417 data->REG_AUTO_PWM = NCT6775_REG_AUTO_PWM;
3418 data->REG_CRITICAL_TEMP = NCT6775_REG_CRITICAL_TEMP;
3419 data->REG_CRITICAL_TEMP_TOLERANCE
3420 = NCT6775_REG_CRITICAL_TEMP_TOLERANCE;
3421 data->REG_TEMP_OFFSET = NCT6775_REG_TEMP_OFFSET;
3422 data->REG_TEMP_SOURCE = NCT6775_REG_TEMP_SOURCE;
3423 data->REG_TEMP_SEL = NCT6775_REG_TEMP_SEL;
3424 data->REG_WEIGHT_TEMP_SEL = NCT6775_REG_WEIGHT_TEMP_SEL;
3425 data->REG_WEIGHT_TEMP[0] = NCT6775_REG_WEIGHT_TEMP_STEP;
3426 data->REG_WEIGHT_TEMP[1] = NCT6775_REG_WEIGHT_TEMP_STEP_TOL;
3427 data->REG_WEIGHT_TEMP[2] = NCT6775_REG_WEIGHT_TEMP_BASE;
3428 data->REG_ALARM = NCT6775_REG_ALARM;
3429 data->REG_BEEP = NCT6775_REG_BEEP;
3430
3431 reg_temp = NCT6775_REG_TEMP;
3432 reg_temp_mon = NCT6775_REG_TEMP_MON;
3433 num_reg_temp = ARRAY_SIZE(NCT6775_REG_TEMP);
3434 num_reg_temp_mon = ARRAY_SIZE(NCT6775_REG_TEMP_MON);
3435 reg_temp_over = NCT6775_REG_TEMP_OVER;
3436 reg_temp_hyst = NCT6775_REG_TEMP_HYST;
3437 reg_temp_config = NCT6775_REG_TEMP_CONFIG;
3438 reg_temp_alternate = NCT6775_REG_TEMP_ALTERNATE;
3439 reg_temp_crit = NCT6775_REG_TEMP_CRIT;
3440
3441 break;
3442 case nct6776:
3443 data->in_num = 9;
3444 data->pwm_num = 3;
3445 data->auto_pwm_num = 4;
3446 data->has_fan_div = false;
3447 data->temp_fixed_num = 3;
3448 data->num_temp_alarms = 3;
3449 data->num_temp_beeps = 6;
3450
3451 data->ALARM_BITS = NCT6776_ALARM_BITS;
3452 data->BEEP_BITS = NCT6776_BEEP_BITS;
3453
3454 data->fan_from_reg = fan_from_reg13;
3455 data->fan_from_reg_min = fan_from_reg13;
3456 data->target_temp_mask = 0xff;
3457 data->tolerance_mask = 0x07;
3458 data->speed_tolerance_limit = 63;
3459
3460 data->temp_label = nct6776_temp_label;
3461 data->temp_label_num = ARRAY_SIZE(nct6776_temp_label);
3462
3463 data->REG_CONFIG = NCT6775_REG_CONFIG;
3464 data->REG_VBAT = NCT6775_REG_VBAT;
3465 data->REG_DIODE = NCT6775_REG_DIODE;
3466 data->DIODE_MASK = NCT6775_DIODE_MASK;
3467 data->REG_VIN = NCT6775_REG_IN;
3468 data->REG_IN_MINMAX[0] = NCT6775_REG_IN_MIN;
3469 data->REG_IN_MINMAX[1] = NCT6775_REG_IN_MAX;
3470 data->REG_TARGET = NCT6775_REG_TARGET;
3471 data->REG_FAN = NCT6775_REG_FAN;
3472 data->REG_FAN_MODE = NCT6775_REG_FAN_MODE;
3473 data->REG_FAN_MIN = NCT6776_REG_FAN_MIN;
3474 data->REG_FAN_PULSES = NCT6776_REG_FAN_PULSES;
3475 data->FAN_PULSE_SHIFT = NCT6775_FAN_PULSE_SHIFT;
3476 data->REG_FAN_TIME[0] = NCT6775_REG_FAN_STOP_TIME;
3477 data->REG_FAN_TIME[1] = NCT6775_REG_FAN_STEP_UP_TIME;
3478 data->REG_FAN_TIME[2] = NCT6775_REG_FAN_STEP_DOWN_TIME;
3479 data->REG_TOLERANCE_H = NCT6776_REG_TOLERANCE_H;
3480 data->REG_PWM[0] = NCT6775_REG_PWM;
3481 data->REG_PWM[1] = NCT6775_REG_FAN_START_OUTPUT;
3482 data->REG_PWM[2] = NCT6775_REG_FAN_STOP_OUTPUT;
3483 data->REG_PWM[5] = NCT6775_REG_WEIGHT_DUTY_STEP;
3484 data->REG_PWM[6] = NCT6776_REG_WEIGHT_DUTY_BASE;
3485 data->REG_PWM_READ = NCT6775_REG_PWM_READ;
3486 data->REG_PWM_MODE = NCT6776_REG_PWM_MODE;
3487 data->PWM_MODE_MASK = NCT6776_PWM_MODE_MASK;
3488 data->REG_AUTO_TEMP = NCT6775_REG_AUTO_TEMP;
3489 data->REG_AUTO_PWM = NCT6775_REG_AUTO_PWM;
3490 data->REG_CRITICAL_TEMP = NCT6775_REG_CRITICAL_TEMP;
3491 data->REG_CRITICAL_TEMP_TOLERANCE
3492 = NCT6775_REG_CRITICAL_TEMP_TOLERANCE;
3493 data->REG_TEMP_OFFSET = NCT6775_REG_TEMP_OFFSET;
3494 data->REG_TEMP_SOURCE = NCT6775_REG_TEMP_SOURCE;
3495 data->REG_TEMP_SEL = NCT6775_REG_TEMP_SEL;
3496 data->REG_WEIGHT_TEMP_SEL = NCT6775_REG_WEIGHT_TEMP_SEL;
3497 data->REG_WEIGHT_TEMP[0] = NCT6775_REG_WEIGHT_TEMP_STEP;
3498 data->REG_WEIGHT_TEMP[1] = NCT6775_REG_WEIGHT_TEMP_STEP_TOL;
3499 data->REG_WEIGHT_TEMP[2] = NCT6775_REG_WEIGHT_TEMP_BASE;
3500 data->REG_ALARM = NCT6775_REG_ALARM;
3501 data->REG_BEEP = NCT6776_REG_BEEP;
3502
3503 reg_temp = NCT6775_REG_TEMP;
3504 reg_temp_mon = NCT6775_REG_TEMP_MON;
3505 num_reg_temp = ARRAY_SIZE(NCT6775_REG_TEMP);
3506 num_reg_temp_mon = ARRAY_SIZE(NCT6775_REG_TEMP_MON);
3507 reg_temp_over = NCT6775_REG_TEMP_OVER;
3508 reg_temp_hyst = NCT6775_REG_TEMP_HYST;
3509 reg_temp_config = NCT6776_REG_TEMP_CONFIG;
3510 reg_temp_alternate = NCT6776_REG_TEMP_ALTERNATE;
3511 reg_temp_crit = NCT6776_REG_TEMP_CRIT;
3512
3513 break;
3514 case nct6779:
3515 data->in_num = 15;
3516 data->pwm_num = 5;
3517 data->auto_pwm_num = 4;
3518 data->has_fan_div = false;
3519 data->temp_fixed_num = 6;
3520 data->num_temp_alarms = 2;
3521 data->num_temp_beeps = 2;
3522
3523 data->ALARM_BITS = NCT6779_ALARM_BITS;
3524 data->BEEP_BITS = NCT6779_BEEP_BITS;
3525
3526 data->fan_from_reg = fan_from_reg13;
3527 data->fan_from_reg_min = fan_from_reg13;
3528 data->target_temp_mask = 0xff;
3529 data->tolerance_mask = 0x07;
3530 data->speed_tolerance_limit = 63;
3531
3532 data->temp_label = nct6779_temp_label;
3533 data->temp_label_num = ARRAY_SIZE(nct6779_temp_label);
3534
3535 data->REG_CONFIG = NCT6775_REG_CONFIG;
3536 data->REG_VBAT = NCT6775_REG_VBAT;
3537 data->REG_DIODE = NCT6775_REG_DIODE;
3538 data->DIODE_MASK = NCT6775_DIODE_MASK;
3539 data->REG_VIN = NCT6779_REG_IN;
3540 data->REG_IN_MINMAX[0] = NCT6775_REG_IN_MIN;
3541 data->REG_IN_MINMAX[1] = NCT6775_REG_IN_MAX;
3542 data->REG_TARGET = NCT6775_REG_TARGET;
3543 data->REG_FAN = NCT6779_REG_FAN;
3544 data->REG_FAN_MODE = NCT6775_REG_FAN_MODE;
3545 data->REG_FAN_MIN = NCT6776_REG_FAN_MIN;
3546 data->REG_FAN_PULSES = NCT6779_REG_FAN_PULSES;
3547 data->FAN_PULSE_SHIFT = NCT6775_FAN_PULSE_SHIFT;
3548 data->REG_FAN_TIME[0] = NCT6775_REG_FAN_STOP_TIME;
3549 data->REG_FAN_TIME[1] = NCT6775_REG_FAN_STEP_UP_TIME;
3550 data->REG_FAN_TIME[2] = NCT6775_REG_FAN_STEP_DOWN_TIME;
3551 data->REG_TOLERANCE_H = NCT6776_REG_TOLERANCE_H;
3552 data->REG_PWM[0] = NCT6775_REG_PWM;
3553 data->REG_PWM[1] = NCT6775_REG_FAN_START_OUTPUT;
3554 data->REG_PWM[2] = NCT6775_REG_FAN_STOP_OUTPUT;
3555 data->REG_PWM[5] = NCT6775_REG_WEIGHT_DUTY_STEP;
3556 data->REG_PWM[6] = NCT6776_REG_WEIGHT_DUTY_BASE;
3557 data->REG_PWM_READ = NCT6775_REG_PWM_READ;
3558 data->REG_PWM_MODE = NCT6776_REG_PWM_MODE;
3559 data->PWM_MODE_MASK = NCT6776_PWM_MODE_MASK;
3560 data->REG_AUTO_TEMP = NCT6775_REG_AUTO_TEMP;
3561 data->REG_AUTO_PWM = NCT6775_REG_AUTO_PWM;
3562 data->REG_CRITICAL_TEMP = NCT6775_REG_CRITICAL_TEMP;
3563 data->REG_CRITICAL_TEMP_TOLERANCE
3564 = NCT6775_REG_CRITICAL_TEMP_TOLERANCE;
3565 data->REG_CRITICAL_PWM_ENABLE = NCT6779_REG_CRITICAL_PWM_ENABLE;
3566 data->CRITICAL_PWM_ENABLE_MASK
3567 = NCT6779_CRITICAL_PWM_ENABLE_MASK;
3568 data->REG_CRITICAL_PWM = NCT6779_REG_CRITICAL_PWM;
3569 data->REG_TEMP_OFFSET = NCT6779_REG_TEMP_OFFSET;
3570 data->REG_TEMP_SOURCE = NCT6775_REG_TEMP_SOURCE;
3571 data->REG_TEMP_SEL = NCT6775_REG_TEMP_SEL;
3572 data->REG_WEIGHT_TEMP_SEL = NCT6775_REG_WEIGHT_TEMP_SEL;
3573 data->REG_WEIGHT_TEMP[0] = NCT6775_REG_WEIGHT_TEMP_STEP;
3574 data->REG_WEIGHT_TEMP[1] = NCT6775_REG_WEIGHT_TEMP_STEP_TOL;
3575 data->REG_WEIGHT_TEMP[2] = NCT6775_REG_WEIGHT_TEMP_BASE;
3576 data->REG_ALARM = NCT6779_REG_ALARM;
3577 data->REG_BEEP = NCT6776_REG_BEEP;
3578
3579 reg_temp = NCT6779_REG_TEMP;
3580 reg_temp_mon = NCT6779_REG_TEMP_MON;
3581 num_reg_temp = ARRAY_SIZE(NCT6779_REG_TEMP);
3582 num_reg_temp_mon = ARRAY_SIZE(NCT6779_REG_TEMP_MON);
3583 reg_temp_over = NCT6779_REG_TEMP_OVER;
3584 reg_temp_hyst = NCT6779_REG_TEMP_HYST;
3585 reg_temp_config = NCT6779_REG_TEMP_CONFIG;
3586 reg_temp_alternate = NCT6779_REG_TEMP_ALTERNATE;
3587 reg_temp_crit = NCT6779_REG_TEMP_CRIT;
3588
3589 break;
3590 case nct6791:
3591 data->in_num = 15;
3592 data->pwm_num = 6;
3593 data->auto_pwm_num = 4;
3594 data->has_fan_div = false;
3595 data->temp_fixed_num = 6;
3596 data->num_temp_alarms = 2;
3597 data->num_temp_beeps = 2;
3598
3599 data->ALARM_BITS = NCT6791_ALARM_BITS;
3600 data->BEEP_BITS = NCT6779_BEEP_BITS;
3601
3602 data->fan_from_reg = fan_from_reg13;
3603 data->fan_from_reg_min = fan_from_reg13;
3604 data->target_temp_mask = 0xff;
3605 data->tolerance_mask = 0x07;
3606 data->speed_tolerance_limit = 63;
3607
3608 data->temp_label = nct6779_temp_label;
3609 data->temp_label_num = ARRAY_SIZE(nct6779_temp_label);
3610
3611 data->REG_CONFIG = NCT6775_REG_CONFIG;
3612 data->REG_VBAT = NCT6775_REG_VBAT;
3613 data->REG_DIODE = NCT6775_REG_DIODE;
3614 data->DIODE_MASK = NCT6775_DIODE_MASK;
3615 data->REG_VIN = NCT6779_REG_IN;
3616 data->REG_IN_MINMAX[0] = NCT6775_REG_IN_MIN;
3617 data->REG_IN_MINMAX[1] = NCT6775_REG_IN_MAX;
3618 data->REG_TARGET = NCT6775_REG_TARGET;
3619 data->REG_FAN = NCT6779_REG_FAN;
3620 data->REG_FAN_MODE = NCT6775_REG_FAN_MODE;
3621 data->REG_FAN_MIN = NCT6776_REG_FAN_MIN;
3622 data->REG_FAN_PULSES = NCT6779_REG_FAN_PULSES;
3623 data->FAN_PULSE_SHIFT = NCT6775_FAN_PULSE_SHIFT;
3624 data->REG_FAN_TIME[0] = NCT6775_REG_FAN_STOP_TIME;
3625 data->REG_FAN_TIME[1] = NCT6775_REG_FAN_STEP_UP_TIME;
3626 data->REG_FAN_TIME[2] = NCT6775_REG_FAN_STEP_DOWN_TIME;
3627 data->REG_TOLERANCE_H = NCT6776_REG_TOLERANCE_H;
3628 data->REG_PWM[0] = NCT6775_REG_PWM;
3629 data->REG_PWM[1] = NCT6775_REG_FAN_START_OUTPUT;
3630 data->REG_PWM[2] = NCT6775_REG_FAN_STOP_OUTPUT;
3631 data->REG_PWM[5] = NCT6791_REG_WEIGHT_DUTY_STEP;
3632 data->REG_PWM[6] = NCT6791_REG_WEIGHT_DUTY_BASE;
3633 data->REG_PWM_READ = NCT6775_REG_PWM_READ;
3634 data->REG_PWM_MODE = NCT6776_REG_PWM_MODE;
3635 data->PWM_MODE_MASK = NCT6776_PWM_MODE_MASK;
3636 data->REG_AUTO_TEMP = NCT6775_REG_AUTO_TEMP;
3637 data->REG_AUTO_PWM = NCT6775_REG_AUTO_PWM;
3638 data->REG_CRITICAL_TEMP = NCT6775_REG_CRITICAL_TEMP;
3639 data->REG_CRITICAL_TEMP_TOLERANCE
3640 = NCT6775_REG_CRITICAL_TEMP_TOLERANCE;
3641 data->REG_CRITICAL_PWM_ENABLE = NCT6779_REG_CRITICAL_PWM_ENABLE;
3642 data->CRITICAL_PWM_ENABLE_MASK
3643 = NCT6779_CRITICAL_PWM_ENABLE_MASK;
3644 data->REG_CRITICAL_PWM = NCT6779_REG_CRITICAL_PWM;
3645 data->REG_TEMP_OFFSET = NCT6779_REG_TEMP_OFFSET;
3646 data->REG_TEMP_SOURCE = NCT6775_REG_TEMP_SOURCE;
3647 data->REG_TEMP_SEL = NCT6775_REG_TEMP_SEL;
3648 data->REG_WEIGHT_TEMP_SEL = NCT6791_REG_WEIGHT_TEMP_SEL;
3649 data->REG_WEIGHT_TEMP[0] = NCT6791_REG_WEIGHT_TEMP_STEP;
3650 data->REG_WEIGHT_TEMP[1] = NCT6791_REG_WEIGHT_TEMP_STEP_TOL;
3651 data->REG_WEIGHT_TEMP[2] = NCT6791_REG_WEIGHT_TEMP_BASE;
3652 data->REG_ALARM = NCT6791_REG_ALARM;
3653 data->REG_BEEP = NCT6776_REG_BEEP;
3654
3655 reg_temp = NCT6779_REG_TEMP;
3656 reg_temp_mon = NCT6779_REG_TEMP_MON;
3657 num_reg_temp = ARRAY_SIZE(NCT6779_REG_TEMP);
3658 num_reg_temp_mon = ARRAY_SIZE(NCT6779_REG_TEMP_MON);
3659 reg_temp_over = NCT6779_REG_TEMP_OVER;
3660 reg_temp_hyst = NCT6779_REG_TEMP_HYST;
3661 reg_temp_config = NCT6779_REG_TEMP_CONFIG;
3662 reg_temp_alternate = NCT6779_REG_TEMP_ALTERNATE;
3663 reg_temp_crit = NCT6779_REG_TEMP_CRIT;
3664
3665 break;
3666 default:
3667 return -ENODEV;
3668 }
3669 data->have_in = (1 << data->in_num) - 1;
3670 data->have_temp = 0;
3671
3672 /*
3673 * On some boards, not all available temperature sources are monitored,
3674 * even though some of the monitoring registers are unused.
3675 * Get list of unused monitoring registers, then detect if any fan
3676 * controls are configured to use unmonitored temperature sources.
3677 * If so, assign the unmonitored temperature sources to available
3678 * monitoring registers.
3679 */
3680 mask = 0;
3681 available = 0;
3682 for (i = 0; i < num_reg_temp; i++) {
3683 if (reg_temp[i] == 0)
3684 continue;
3685
3686 src = nct6775_read_value(data, data->REG_TEMP_SOURCE[i]) & 0x1f;
3687 if (!src || (mask & (1 << src)))
3688 available |= 1 << i;
3689
3690 mask |= 1 << src;
3691 }
3692
3693 /*
3694 * Now find unmonitored temperature registers and enable monitoring
3695 * if additional monitoring registers are available.
3696 */
3697 add_temp_sensors(data, data->REG_TEMP_SEL, &available, &mask);
3698 add_temp_sensors(data, data->REG_WEIGHT_TEMP_SEL, &available, &mask);
3699
3700 mask = 0;
3701 s = NUM_TEMP_FIXED; /* First dynamic temperature attribute */
3702 for (i = 0; i < num_reg_temp; i++) {
3703 if (reg_temp[i] == 0)
3704 continue;
3705
3706 src = nct6775_read_value(data, data->REG_TEMP_SOURCE[i]) & 0x1f;
3707 if (!src || (mask & (1 << src)))
3708 continue;
3709
3710 if (src >= data->temp_label_num ||
3711 !strlen(data->temp_label[src])) {
3712 dev_info(dev,
3713 "Invalid temperature source %d at index %d, source register 0x%x, temp register 0x%x\n",
3714 src, i, data->REG_TEMP_SOURCE[i], reg_temp[i]);
3715 continue;
3716 }
3717
3718 mask |= 1 << src;
3719
3720 /* Use fixed index for SYSTIN(1), CPUTIN(2), AUXTIN(3) */
3721 if (src <= data->temp_fixed_num) {
3722 data->have_temp |= 1 << (src - 1);
3723 data->have_temp_fixed |= 1 << (src - 1);
3724 data->reg_temp[0][src - 1] = reg_temp[i];
3725 data->reg_temp[1][src - 1] = reg_temp_over[i];
3726 data->reg_temp[2][src - 1] = reg_temp_hyst[i];
3727 if (reg_temp_crit_h && reg_temp_crit_h[i])
3728 data->reg_temp[3][src - 1] = reg_temp_crit_h[i];
3729 else if (reg_temp_crit[src - 1])
3730 data->reg_temp[3][src - 1]
3731 = reg_temp_crit[src - 1];
3732 if (reg_temp_crit_l && reg_temp_crit_l[i])
3733 data->reg_temp[4][src - 1] = reg_temp_crit_l[i];
3734 data->reg_temp_config[src - 1] = reg_temp_config[i];
3735 data->temp_src[src - 1] = src;
3736 continue;
3737 }
3738
3739 if (s >= NUM_TEMP)
3740 continue;
3741
3742 /* Use dynamic index for other sources */
3743 data->have_temp |= 1 << s;
3744 data->reg_temp[0][s] = reg_temp[i];
3745 data->reg_temp[1][s] = reg_temp_over[i];
3746 data->reg_temp[2][s] = reg_temp_hyst[i];
3747 data->reg_temp_config[s] = reg_temp_config[i];
3748 if (reg_temp_crit_h && reg_temp_crit_h[i])
3749 data->reg_temp[3][s] = reg_temp_crit_h[i];
3750 else if (reg_temp_crit[src - 1])
3751 data->reg_temp[3][s] = reg_temp_crit[src - 1];
3752 if (reg_temp_crit_l && reg_temp_crit_l[i])
3753 data->reg_temp[4][s] = reg_temp_crit_l[i];
3754
3755 data->temp_src[s] = src;
3756 s++;
3757 }
3758
3759 /*
3760 * Repeat with temperatures used for fan control.
3761 * This set of registers does not support limits.
3762 */
3763 for (i = 0; i < num_reg_temp_mon; i++) {
3764 if (reg_temp_mon[i] == 0)
3765 continue;
3766
3767 src = nct6775_read_value(data, data->REG_TEMP_SEL[i]) & 0x1f;
3768 if (!src || (mask & (1 << src)))
3769 continue;
3770
3771 if (src >= data->temp_label_num ||
3772 !strlen(data->temp_label[src])) {
3773 dev_info(dev,
3774 "Invalid temperature source %d at index %d, source register 0x%x, temp register 0x%x\n",
3775 src, i, data->REG_TEMP_SEL[i],
3776 reg_temp_mon[i]);
3777 continue;
3778 }
3779
3780 mask |= 1 << src;
3781
3782 /* Use fixed index for SYSTIN(1), CPUTIN(2), AUXTIN(3) */
3783 if (src <= data->temp_fixed_num) {
3784 if (data->have_temp & (1 << (src - 1)))
3785 continue;
3786 data->have_temp |= 1 << (src - 1);
3787 data->have_temp_fixed |= 1 << (src - 1);
3788 data->reg_temp[0][src - 1] = reg_temp_mon[i];
3789 data->temp_src[src - 1] = src;
3790 continue;
3791 }
3792
3793 if (s >= NUM_TEMP)
3794 continue;
3795
3796 /* Use dynamic index for other sources */
3797 data->have_temp |= 1 << s;
3798 data->reg_temp[0][s] = reg_temp_mon[i];
3799 data->temp_src[s] = src;
3800 s++;
3801 }
3802
3803 #ifdef USE_ALTERNATE
3804 /*
3805 * Go through the list of alternate temp registers and enable
3806 * if possible.
3807 * The temperature is already monitored if the respective bit in <mask>
3808 * is set.
3809 */
3810 for (i = 0; i < data->temp_label_num - 1; i++) {
3811 if (!reg_temp_alternate[i])
3812 continue;
3813 if (mask & (1 << (i + 1)))
3814 continue;
3815 if (i < data->temp_fixed_num) {
3816 if (data->have_temp & (1 << i))
3817 continue;
3818 data->have_temp |= 1 << i;
3819 data->have_temp_fixed |= 1 << i;
3820 data->reg_temp[0][i] = reg_temp_alternate[i];
3821 if (i < num_reg_temp) {
3822 data->reg_temp[1][i] = reg_temp_over[i];
3823 data->reg_temp[2][i] = reg_temp_hyst[i];
3824 }
3825 data->temp_src[i] = i + 1;
3826 continue;
3827 }
3828
3829 if (s >= NUM_TEMP) /* Abort if no more space */
3830 break;
3831
3832 data->have_temp |= 1 << s;
3833 data->reg_temp[0][s] = reg_temp_alternate[i];
3834 data->temp_src[s] = i + 1;
3835 s++;
3836 }
3837 #endif /* USE_ALTERNATE */
3838
3839 /* Initialize the chip */
3840 nct6775_init_device(data);
3841
3842 err = superio_enter(sio_data->sioreg);
3843 if (err)
3844 return err;
3845
3846 cr2a = superio_inb(sio_data->sioreg, 0x2a);
3847 switch (data->kind) {
3848 case nct6775:
3849 data->have_vid = (cr2a & 0x40);
3850 break;
3851 case nct6776:
3852 data->have_vid = (cr2a & 0x60) == 0x40;
3853 break;
3854 case nct6106:
3855 case nct6779:
3856 case nct6791:
3857 break;
3858 }
3859
3860 /*
3861 * Read VID value
3862 * We can get the VID input values directly at logical device D 0xe3.
3863 */
3864 if (data->have_vid) {
3865 superio_select(sio_data->sioreg, NCT6775_LD_VID);
3866 data->vid = superio_inb(sio_data->sioreg, 0xe3);
3867 data->vrm = vid_which_vrm();
3868 }
3869
3870 if (fan_debounce) {
3871 u8 tmp;
3872
3873 superio_select(sio_data->sioreg, NCT6775_LD_HWM);
3874 tmp = superio_inb(sio_data->sioreg,
3875 NCT6775_REG_CR_FAN_DEBOUNCE);
3876 switch (data->kind) {
3877 case nct6106:
3878 tmp |= 0xe0;
3879 break;
3880 case nct6775:
3881 tmp |= 0x1e;
3882 break;
3883 case nct6776:
3884 case nct6779:
3885 tmp |= 0x3e;
3886 break;
3887 case nct6791:
3888 tmp |= 0x7e;
3889 break;
3890 }
3891 superio_outb(sio_data->sioreg, NCT6775_REG_CR_FAN_DEBOUNCE,
3892 tmp);
3893 dev_info(&pdev->dev, "Enabled fan debounce for chip %s\n",
3894 data->name);
3895 }
3896
3897 nct6775_check_fan_inputs(data);
3898
3899 superio_exit(sio_data->sioreg);
3900
3901 /* Read fan clock dividers immediately */
3902 nct6775_init_fan_common(dev, data);
3903
3904 /* Register sysfs hooks */
3905 group = nct6775_create_attr_group(dev, &nct6775_pwm_template_group,
3906 data->pwm_num);
3907 if (IS_ERR(group))
3908 return PTR_ERR(group);
3909
3910 data->groups[num_attr_groups++] = group;
3911
3912 group = nct6775_create_attr_group(dev, &nct6775_in_template_group,
3913 fls(data->have_in));
3914 if (IS_ERR(group))
3915 return PTR_ERR(group);
3916
3917 data->groups[num_attr_groups++] = group;
3918
3919 group = nct6775_create_attr_group(dev, &nct6775_fan_template_group,
3920 fls(data->has_fan));
3921 if (IS_ERR(group))
3922 return PTR_ERR(group);
3923
3924 data->groups[num_attr_groups++] = group;
3925
3926 group = nct6775_create_attr_group(dev, &nct6775_temp_template_group,
3927 fls(data->have_temp));
3928 if (IS_ERR(group))
3929 return PTR_ERR(group);
3930
3931 data->groups[num_attr_groups++] = group;
3932 data->groups[num_attr_groups++] = &nct6775_group_other;
3933
3934 hwmon_dev = devm_hwmon_device_register_with_groups(dev, data->name,
3935 data, data->groups);
3936 return PTR_ERR_OR_ZERO(hwmon_dev);
3937 }
3938
3939 static void nct6791_enable_io_mapping(int sioaddr)
3940 {
3941 int val;
3942
3943 val = superio_inb(sioaddr, NCT6791_REG_HM_IO_SPACE_LOCK_ENABLE);
3944 if (val & 0x10) {
3945 pr_info("Enabling hardware monitor logical device mappings.\n");
3946 superio_outb(sioaddr, NCT6791_REG_HM_IO_SPACE_LOCK_ENABLE,
3947 val & ~0x10);
3948 }
3949 }
3950
3951 #ifdef CONFIG_PM
3952 static int nct6775_suspend(struct device *dev)
3953 {
3954 struct nct6775_data *data = nct6775_update_device(dev);
3955
3956 mutex_lock(&data->update_lock);
3957 data->vbat = nct6775_read_value(data, data->REG_VBAT);
3958 if (data->kind == nct6775) {
3959 data->fandiv1 = nct6775_read_value(data, NCT6775_REG_FANDIV1);
3960 data->fandiv2 = nct6775_read_value(data, NCT6775_REG_FANDIV2);
3961 }
3962 mutex_unlock(&data->update_lock);
3963
3964 return 0;
3965 }
3966
3967 static int nct6775_resume(struct device *dev)
3968 {
3969 struct nct6775_data *data = dev_get_drvdata(dev);
3970 int i, j, err = 0;
3971
3972 mutex_lock(&data->update_lock);
3973 data->bank = 0xff; /* Force initial bank selection */
3974
3975 if (data->kind == nct6791) {
3976 err = superio_enter(data->sioreg);
3977 if (err)
3978 goto abort;
3979
3980 nct6791_enable_io_mapping(data->sioreg);
3981 superio_exit(data->sioreg);
3982 }
3983
3984 /* Restore limits */
3985 for (i = 0; i < data->in_num; i++) {
3986 if (!(data->have_in & (1 << i)))
3987 continue;
3988
3989 nct6775_write_value(data, data->REG_IN_MINMAX[0][i],
3990 data->in[i][1]);
3991 nct6775_write_value(data, data->REG_IN_MINMAX[1][i],
3992 data->in[i][2]);
3993 }
3994
3995 for (i = 0; i < ARRAY_SIZE(data->fan_min); i++) {
3996 if (!(data->has_fan_min & (1 << i)))
3997 continue;
3998
3999 nct6775_write_value(data, data->REG_FAN_MIN[i],
4000 data->fan_min[i]);
4001 }
4002
4003 for (i = 0; i < NUM_TEMP; i++) {
4004 if (!(data->have_temp & (1 << i)))
4005 continue;
4006
4007 for (j = 1; j < ARRAY_SIZE(data->reg_temp); j++)
4008 if (data->reg_temp[j][i])
4009 nct6775_write_temp(data, data->reg_temp[j][i],
4010 data->temp[j][i]);
4011 }
4012
4013 /* Restore other settings */
4014 nct6775_write_value(data, data->REG_VBAT, data->vbat);
4015 if (data->kind == nct6775) {
4016 nct6775_write_value(data, NCT6775_REG_FANDIV1, data->fandiv1);
4017 nct6775_write_value(data, NCT6775_REG_FANDIV2, data->fandiv2);
4018 }
4019
4020 abort:
4021 /* Force re-reading all values */
4022 data->valid = false;
4023 mutex_unlock(&data->update_lock);
4024
4025 return err;
4026 }
4027
4028 static const struct dev_pm_ops nct6775_dev_pm_ops = {
4029 .suspend = nct6775_suspend,
4030 .resume = nct6775_resume,
4031 .freeze = nct6775_suspend,
4032 .restore = nct6775_resume,
4033 };
4034
4035 #define NCT6775_DEV_PM_OPS (&nct6775_dev_pm_ops)
4036 #else
4037 #define NCT6775_DEV_PM_OPS NULL
4038 #endif /* CONFIG_PM */
4039
4040 static struct platform_driver nct6775_driver = {
4041 .driver = {
4042 .owner = THIS_MODULE,
4043 .name = DRVNAME,
4044 .pm = NCT6775_DEV_PM_OPS,
4045 },
4046 .probe = nct6775_probe,
4047 };
4048
4049 static const char * const nct6775_sio_names[] __initconst = {
4050 "NCT6106D",
4051 "NCT6775F",
4052 "NCT6776D/F",
4053 "NCT6779D",
4054 "NCT6791D",
4055 };
4056
4057 /* nct6775_find() looks for a '627 in the Super-I/O config space */
4058 static int __init nct6775_find(int sioaddr, struct nct6775_sio_data *sio_data)
4059 {
4060 u16 val;
4061 int err;
4062 int addr;
4063
4064 err = superio_enter(sioaddr);
4065 if (err)
4066 return err;
4067
4068 if (force_id)
4069 val = force_id;
4070 else
4071 val = (superio_inb(sioaddr, SIO_REG_DEVID) << 8)
4072 | superio_inb(sioaddr, SIO_REG_DEVID + 1);
4073 switch (val & SIO_ID_MASK) {
4074 case SIO_NCT6106_ID:
4075 sio_data->kind = nct6106;
4076 break;
4077 case SIO_NCT6775_ID:
4078 sio_data->kind = nct6775;
4079 break;
4080 case SIO_NCT6776_ID:
4081 sio_data->kind = nct6776;
4082 break;
4083 case SIO_NCT6779_ID:
4084 sio_data->kind = nct6779;
4085 break;
4086 case SIO_NCT6791_ID:
4087 sio_data->kind = nct6791;
4088 break;
4089 default:
4090 if (val != 0xffff)
4091 pr_debug("unsupported chip ID: 0x%04x\n", val);
4092 superio_exit(sioaddr);
4093 return -ENODEV;
4094 }
4095
4096 /* We have a known chip, find the HWM I/O address */
4097 superio_select(sioaddr, NCT6775_LD_HWM);
4098 val = (superio_inb(sioaddr, SIO_REG_ADDR) << 8)
4099 | superio_inb(sioaddr, SIO_REG_ADDR + 1);
4100 addr = val & IOREGION_ALIGNMENT;
4101 if (addr == 0) {
4102 pr_err("Refusing to enable a Super-I/O device with a base I/O port 0\n");
4103 superio_exit(sioaddr);
4104 return -ENODEV;
4105 }
4106
4107 /* Activate logical device if needed */
4108 val = superio_inb(sioaddr, SIO_REG_ENABLE);
4109 if (!(val & 0x01)) {
4110 pr_warn("Forcibly enabling Super-I/O. Sensor is probably unusable.\n");
4111 superio_outb(sioaddr, SIO_REG_ENABLE, val | 0x01);
4112 }
4113
4114 if (sio_data->kind == nct6791)
4115 nct6791_enable_io_mapping(sioaddr);
4116
4117 superio_exit(sioaddr);
4118 pr_info("Found %s or compatible chip at %#x:%#x\n",
4119 nct6775_sio_names[sio_data->kind], sioaddr, addr);
4120 sio_data->sioreg = sioaddr;
4121
4122 return addr;
4123 }
4124
4125 /*
4126 * when Super-I/O functions move to a separate file, the Super-I/O
4127 * bus will manage the lifetime of the device and this module will only keep
4128 * track of the nct6775 driver. But since we use platform_device_alloc(), we
4129 * must keep track of the device
4130 */
4131 static struct platform_device *pdev[2];
4132
4133 static int __init sensors_nct6775_init(void)
4134 {
4135 int i, err;
4136 bool found = false;
4137 int address;
4138 struct resource res;
4139 struct nct6775_sio_data sio_data;
4140 int sioaddr[2] = { 0x2e, 0x4e };
4141
4142 err = platform_driver_register(&nct6775_driver);
4143 if (err)
4144 return err;
4145
4146 /*
4147 * initialize sio_data->kind and sio_data->sioreg.
4148 *
4149 * when Super-I/O functions move to a separate file, the Super-I/O
4150 * driver will probe 0x2e and 0x4e and auto-detect the presence of a
4151 * nct6775 hardware monitor, and call probe()
4152 */
4153 for (i = 0; i < ARRAY_SIZE(pdev); i++) {
4154 address = nct6775_find(sioaddr[i], &sio_data);
4155 if (address <= 0)
4156 continue;
4157
4158 found = true;
4159
4160 pdev[i] = platform_device_alloc(DRVNAME, address);
4161 if (!pdev[i]) {
4162 err = -ENOMEM;
4163 goto exit_device_unregister;
4164 }
4165
4166 err = platform_device_add_data(pdev[i], &sio_data,
4167 sizeof(struct nct6775_sio_data));
4168 if (err)
4169 goto exit_device_put;
4170
4171 memset(&res, 0, sizeof(res));
4172 res.name = DRVNAME;
4173 res.start = address + IOREGION_OFFSET;
4174 res.end = address + IOREGION_OFFSET + IOREGION_LENGTH - 1;
4175 res.flags = IORESOURCE_IO;
4176
4177 err = acpi_check_resource_conflict(&res);
4178 if (err) {
4179 platform_device_put(pdev[i]);
4180 pdev[i] = NULL;
4181 continue;
4182 }
4183
4184 err = platform_device_add_resources(pdev[i], &res, 1);
4185 if (err)
4186 goto exit_device_put;
4187
4188 /* platform_device_add calls probe() */
4189 err = platform_device_add(pdev[i]);
4190 if (err)
4191 goto exit_device_put;
4192 }
4193 if (!found) {
4194 err = -ENODEV;
4195 goto exit_unregister;
4196 }
4197
4198 return 0;
4199
4200 exit_device_put:
4201 platform_device_put(pdev[i]);
4202 exit_device_unregister:
4203 while (--i >= 0) {
4204 if (pdev[i])
4205 platform_device_unregister(pdev[i]);
4206 }
4207 exit_unregister:
4208 platform_driver_unregister(&nct6775_driver);
4209 return err;
4210 }
4211
4212 static void __exit sensors_nct6775_exit(void)
4213 {
4214 int i;
4215
4216 for (i = 0; i < ARRAY_SIZE(pdev); i++) {
4217 if (pdev[i])
4218 platform_device_unregister(pdev[i]);
4219 }
4220 platform_driver_unregister(&nct6775_driver);
4221 }
4222
4223 MODULE_AUTHOR("Guenter Roeck <linux@roeck-us.net>");
4224 MODULE_DESCRIPTION("NCT6106D/NCT6775F/NCT6776F/NCT6779D/NCT6791D driver");
4225 MODULE_LICENSE("GPL");
4226
4227 module_init(sensors_nct6775_init);
4228 module_exit(sensors_nct6775_exit);
Linux kernel - Deliverables
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