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1/*
2 * w83795.c - Linux kernel driver for hardware monitoring
3 * Copyright (C) 2008 Nuvoton Technology Corp.
4 * Wei Song
5 * Copyright (C) 2010 Jean Delvare <khali@linux-fr.org>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation - version 2.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
19 * 02110-1301 USA.
20 *
21 * Supports following chips:
22 *
23 * Chip #vin #fanin #pwm #temp #dts wchipid vendid i2c ISA
24 * w83795g 21 14 8 6 8 0x79 0x5ca3 yes no
25 * w83795adg 18 14 2 6 8 0x79 0x5ca3 yes no
26 */
27
28#include <linux/kernel.h>
29#include <linux/module.h>
30#include <linux/init.h>
31#include <linux/slab.h>
32#include <linux/i2c.h>
33#include <linux/hwmon.h>
34#include <linux/hwmon-sysfs.h>
35#include <linux/err.h>
36#include <linux/mutex.h>
37#include <linux/delay.h>
38
39/* Addresses to scan */
40static const unsigned short normal_i2c[] = {
41 0x2c, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END
42};
43
44
45static bool reset;
46module_param(reset, bool, 0);
47MODULE_PARM_DESC(reset, "Set to 1 to reset chip, not recommended");
48
49
50#define W83795_REG_BANKSEL 0x00
51#define W83795_REG_VENDORID 0xfd
52#define W83795_REG_CHIPID 0xfe
53#define W83795_REG_DEVICEID 0xfb
54#define W83795_REG_DEVICEID_A 0xff
55
56#define W83795_REG_I2C_ADDR 0xfc
57#define W83795_REG_CONFIG 0x01
58#define W83795_REG_CONFIG_CONFIG48 0x04
59#define W83795_REG_CONFIG_START 0x01
60
61/* Multi-Function Pin Ctrl Registers */
62#define W83795_REG_VOLT_CTRL1 0x02
63#define W83795_REG_VOLT_CTRL2 0x03
64#define W83795_REG_TEMP_CTRL1 0x04
65#define W83795_REG_TEMP_CTRL2 0x05
66#define W83795_REG_FANIN_CTRL1 0x06
67#define W83795_REG_FANIN_CTRL2 0x07
68#define W83795_REG_VMIGB_CTRL 0x08
69
70#define TEMP_READ 0
71#define TEMP_CRIT 1
72#define TEMP_CRIT_HYST 2
73#define TEMP_WARN 3
74#define TEMP_WARN_HYST 4
75/*
76 * only crit and crit_hyst affect real-time alarm status
77 * current crit crit_hyst warn warn_hyst
78 */
79static const u16 W83795_REG_TEMP[][5] = {
80 {0x21, 0x96, 0x97, 0x98, 0x99}, /* TD1/TR1 */
81 {0x22, 0x9a, 0x9b, 0x9c, 0x9d}, /* TD2/TR2 */
82 {0x23, 0x9e, 0x9f, 0xa0, 0xa1}, /* TD3/TR3 */
83 {0x24, 0xa2, 0xa3, 0xa4, 0xa5}, /* TD4/TR4 */
84 {0x1f, 0xa6, 0xa7, 0xa8, 0xa9}, /* TR5 */
85 {0x20, 0xaa, 0xab, 0xac, 0xad}, /* TR6 */
86};
87
88#define IN_READ 0
89#define IN_MAX 1
90#define IN_LOW 2
91static const u16 W83795_REG_IN[][3] = {
92 /* Current, HL, LL */
93 {0x10, 0x70, 0x71}, /* VSEN1 */
94 {0x11, 0x72, 0x73}, /* VSEN2 */
95 {0x12, 0x74, 0x75}, /* VSEN3 */
96 {0x13, 0x76, 0x77}, /* VSEN4 */
97 {0x14, 0x78, 0x79}, /* VSEN5 */
98 {0x15, 0x7a, 0x7b}, /* VSEN6 */
99 {0x16, 0x7c, 0x7d}, /* VSEN7 */
100 {0x17, 0x7e, 0x7f}, /* VSEN8 */
101 {0x18, 0x80, 0x81}, /* VSEN9 */
102 {0x19, 0x82, 0x83}, /* VSEN10 */
103 {0x1A, 0x84, 0x85}, /* VSEN11 */
104 {0x1B, 0x86, 0x87}, /* VTT */
105 {0x1C, 0x88, 0x89}, /* 3VDD */
106 {0x1D, 0x8a, 0x8b}, /* 3VSB */
107 {0x1E, 0x8c, 0x8d}, /* VBAT */
108 {0x1F, 0xa6, 0xa7}, /* VSEN12 */
109 {0x20, 0xaa, 0xab}, /* VSEN13 */
110 {0x21, 0x96, 0x97}, /* VSEN14 */
111 {0x22, 0x9a, 0x9b}, /* VSEN15 */
112 {0x23, 0x9e, 0x9f}, /* VSEN16 */
113 {0x24, 0xa2, 0xa3}, /* VSEN17 */
114};
115#define W83795_REG_VRLSB 0x3C
116
117static const u8 W83795_REG_IN_HL_LSB[] = {
118 0x8e, /* VSEN1-4 */
119 0x90, /* VSEN5-8 */
120 0x92, /* VSEN9-11 */
121 0x94, /* VTT, 3VDD, 3VSB, 3VBAT */
122 0xa8, /* VSEN12 */
123 0xac, /* VSEN13 */
124 0x98, /* VSEN14 */
125 0x9c, /* VSEN15 */
126 0xa0, /* VSEN16 */
127 0xa4, /* VSEN17 */
128};
129
130#define IN_LSB_REG(index, type) \
131 (((type) == 1) ? W83795_REG_IN_HL_LSB[(index)] \
132 : (W83795_REG_IN_HL_LSB[(index)] + 1))
133
134#define IN_LSB_SHIFT 0
135#define IN_LSB_IDX 1
136static const u8 IN_LSB_SHIFT_IDX[][2] = {
137 /* High/Low LSB shift, LSB No. */
138 {0x00, 0x00}, /* VSEN1 */
139 {0x02, 0x00}, /* VSEN2 */
140 {0x04, 0x00}, /* VSEN3 */
141 {0x06, 0x00}, /* VSEN4 */
142 {0x00, 0x01}, /* VSEN5 */
143 {0x02, 0x01}, /* VSEN6 */
144 {0x04, 0x01}, /* VSEN7 */
145 {0x06, 0x01}, /* VSEN8 */
146 {0x00, 0x02}, /* VSEN9 */
147 {0x02, 0x02}, /* VSEN10 */
148 {0x04, 0x02}, /* VSEN11 */
149 {0x00, 0x03}, /* VTT */
150 {0x02, 0x03}, /* 3VDD */
151 {0x04, 0x03}, /* 3VSB */
152 {0x06, 0x03}, /* VBAT */
153 {0x06, 0x04}, /* VSEN12 */
154 {0x06, 0x05}, /* VSEN13 */
155 {0x06, 0x06}, /* VSEN14 */
156 {0x06, 0x07}, /* VSEN15 */
157 {0x06, 0x08}, /* VSEN16 */
158 {0x06, 0x09}, /* VSEN17 */
159};
160
161
162#define W83795_REG_FAN(index) (0x2E + (index))
163#define W83795_REG_FAN_MIN_HL(index) (0xB6 + (index))
164#define W83795_REG_FAN_MIN_LSB(index) (0xC4 + (index) / 2)
165#define W83795_REG_FAN_MIN_LSB_SHIFT(index) \
166 (((index) & 1) ? 4 : 0)
167
168#define W83795_REG_VID_CTRL 0x6A
169
170#define W83795_REG_ALARM_CTRL 0x40
171#define ALARM_CTRL_RTSACS (1 << 7)
172#define W83795_REG_ALARM(index) (0x41 + (index))
173#define W83795_REG_CLR_CHASSIS 0x4D
174#define W83795_REG_BEEP(index) (0x50 + (index))
175
176#define W83795_REG_OVT_CFG 0x58
177#define OVT_CFG_SEL (1 << 7)
178
179
180#define W83795_REG_FCMS1 0x201
181#define W83795_REG_FCMS2 0x208
182#define W83795_REG_TFMR(index) (0x202 + (index))
183#define W83795_REG_FOMC 0x20F
184
185#define W83795_REG_TSS(index) (0x209 + (index))
186
187#define TSS_MAP_RESERVED 0xff
188static const u8 tss_map[4][6] = {
189 { 0, 1, 2, 3, 4, 5},
190 { 6, 7, 8, 9, 0, 1},
191 {10, 11, 12, 13, 2, 3},
192 { 4, 5, 4, 5, TSS_MAP_RESERVED, TSS_MAP_RESERVED},
193};
194
195#define PWM_OUTPUT 0
196#define PWM_FREQ 1
197#define PWM_START 2
198#define PWM_NONSTOP 3
199#define PWM_STOP_TIME 4
200#define W83795_REG_PWM(index, nr) (0x210 + (nr) * 8 + (index))
201
202#define W83795_REG_FTSH(index) (0x240 + (index) * 2)
203#define W83795_REG_FTSL(index) (0x241 + (index) * 2)
204#define W83795_REG_TFTS 0x250
205
206#define TEMP_PWM_TTTI 0
207#define TEMP_PWM_CTFS 1
208#define TEMP_PWM_HCT 2
209#define TEMP_PWM_HOT 3
210#define W83795_REG_TTTI(index) (0x260 + (index))
211#define W83795_REG_CTFS(index) (0x268 + (index))
212#define W83795_REG_HT(index) (0x270 + (index))
213
214#define SF4_TEMP 0
215#define SF4_PWM 1
216#define W83795_REG_SF4_TEMP(temp_num, index) \
217 (0x280 + 0x10 * (temp_num) + (index))
218#define W83795_REG_SF4_PWM(temp_num, index) \
219 (0x288 + 0x10 * (temp_num) + (index))
220
221#define W83795_REG_DTSC 0x301
222#define W83795_REG_DTSE 0x302
223#define W83795_REG_DTS(index) (0x26 + (index))
224#define W83795_REG_PECI_TBASE(index) (0x320 + (index))
225
226#define DTS_CRIT 0
227#define DTS_CRIT_HYST 1
228#define DTS_WARN 2
229#define DTS_WARN_HYST 3
230#define W83795_REG_DTS_EXT(index) (0xB2 + (index))
231
232#define SETUP_PWM_DEFAULT 0
233#define SETUP_PWM_UPTIME 1
234#define SETUP_PWM_DOWNTIME 2
235#define W83795_REG_SETUP_PWM(index) (0x20C + (index))
236
237static inline u16 in_from_reg(u8 index, u16 val)
238{
239 /* 3VDD, 3VSB and VBAT: 6 mV/bit; other inputs: 2 mV/bit */
240 if (index >= 12 && index <= 14)
241 return val * 6;
242 else
243 return val * 2;
244}
245
246static inline u16 in_to_reg(u8 index, u16 val)
247{
248 if (index >= 12 && index <= 14)
249 return val / 6;
250 else
251 return val / 2;
252}
253
254static inline unsigned long fan_from_reg(u16 val)
255{
256 if ((val == 0xfff) || (val == 0))
257 return 0;
258 return 1350000UL / val;
259}
260
261static inline u16 fan_to_reg(long rpm)
262{
263 if (rpm <= 0)
264 return 0x0fff;
265 return SENSORS_LIMIT((1350000 + (rpm >> 1)) / rpm, 1, 0xffe);
266}
267
268static inline unsigned long time_from_reg(u8 reg)
269{
270 return reg * 100;
271}
272
273static inline u8 time_to_reg(unsigned long val)
274{
275 return SENSORS_LIMIT((val + 50) / 100, 0, 0xff);
276}
277
278static inline long temp_from_reg(s8 reg)
279{
280 return reg * 1000;
281}
282
283static inline s8 temp_to_reg(long val, s8 min, s8 max)
284{
285 return SENSORS_LIMIT(val / 1000, min, max);
286}
287
288static const u16 pwm_freq_cksel0[16] = {
289 1024, 512, 341, 256, 205, 171, 146, 128,
290 85, 64, 32, 16, 8, 4, 2, 1
291};
292
293static unsigned int pwm_freq_from_reg(u8 reg, u16 clkin)
294{
295 unsigned long base_clock;
296
297 if (reg & 0x80) {
298 base_clock = clkin * 1000 / ((clkin == 48000) ? 384 : 256);
299 return base_clock / ((reg & 0x7f) + 1);
300 } else
301 return pwm_freq_cksel0[reg & 0x0f];
302}
303
304static u8 pwm_freq_to_reg(unsigned long val, u16 clkin)
305{
306 unsigned long base_clock;
307 u8 reg0, reg1;
308 unsigned long best0, best1;
309
310 /* Best fit for cksel = 0 */
311 for (reg0 = 0; reg0 < ARRAY_SIZE(pwm_freq_cksel0) - 1; reg0++) {
312 if (val > (pwm_freq_cksel0[reg0] +
313 pwm_freq_cksel0[reg0 + 1]) / 2)
314 break;
315 }
316 if (val < 375) /* cksel = 1 can't beat this */
317 return reg0;
318 best0 = pwm_freq_cksel0[reg0];
319
320 /* Best fit for cksel = 1 */
321 base_clock = clkin * 1000 / ((clkin == 48000) ? 384 : 256);
322 reg1 = SENSORS_LIMIT(DIV_ROUND_CLOSEST(base_clock, val), 1, 128);
323 best1 = base_clock / reg1;
324 reg1 = 0x80 | (reg1 - 1);
325
326 /* Choose the closest one */
327 if (abs(val - best0) > abs(val - best1))
328 return reg1;
329 else
330 return reg0;
331}
332
333enum chip_types {w83795g, w83795adg};
334
335struct w83795_data {
336 struct device *hwmon_dev;
337 struct mutex update_lock;
338 unsigned long last_updated; /* In jiffies */
339 enum chip_types chip_type;
340
341 u8 bank;
342
343 u32 has_in; /* Enable monitor VIN or not */
344 u8 has_dyn_in; /* Only in2-0 can have this */
345 u16 in[21][3]; /* Register value, read/high/low */
346 u8 in_lsb[10][3]; /* LSB Register value, high/low */
347 u8 has_gain; /* has gain: in17-20 * 8 */
348
349 u16 has_fan; /* Enable fan14-1 or not */
350 u16 fan[14]; /* Register value combine */
351 u16 fan_min[14]; /* Register value combine */
352
353 u8 has_temp; /* Enable monitor temp6-1 or not */
354 s8 temp[6][5]; /* current, crit, crit_hyst, warn, warn_hyst */
355 u8 temp_read_vrlsb[6];
356 u8 temp_mode; /* Bit vector, 0 = TR, 1 = TD */
357 u8 temp_src[3]; /* Register value */
358
359 u8 enable_dts; /*
360 * Enable PECI and SB-TSI,
361 * bit 0: =1 enable, =0 disable,
362 * bit 1: =1 AMD SB-TSI, =0 Intel PECI
363 */
364 u8 has_dts; /* Enable monitor DTS temp */
365 s8 dts[8]; /* Register value */
366 u8 dts_read_vrlsb[8]; /* Register value */
367 s8 dts_ext[4]; /* Register value */
368
369 u8 has_pwm; /*
370 * 795g supports 8 pwm, 795adg only supports 2,
371 * no config register, only affected by chip
372 * type
373 */
374 u8 pwm[8][5]; /*
375 * Register value, output, freq, start,
376 * non stop, stop time
377 */
378 u16 clkin; /* CLKIN frequency in kHz */
379 u8 pwm_fcms[2]; /* Register value */
380 u8 pwm_tfmr[6]; /* Register value */
381 u8 pwm_fomc; /* Register value */
382
383 u16 target_speed[8]; /*
384 * Register value, target speed for speed
385 * cruise
386 */
387 u8 tol_speed; /* tolerance of target speed */
388 u8 pwm_temp[6][4]; /* TTTI, CTFS, HCT, HOT */
389 u8 sf4_reg[6][2][7]; /* 6 temp, temp/dcpwm, 7 registers */
390
391 u8 setup_pwm[3]; /* Register value */
392
393 u8 alarms[6]; /* Register value */
394 u8 enable_beep;
395 u8 beeps[6]; /* Register value */
396
397 char valid;
398 char valid_limits;
399 char valid_pwm_config;
400};
401
402/*
403 * Hardware access
404 * We assume that nobdody can change the bank outside the driver.
405 */
406
407/* Must be called with data->update_lock held, except during initialization */
408static int w83795_set_bank(struct i2c_client *client, u8 bank)
409{
410 struct w83795_data *data = i2c_get_clientdata(client);
411 int err;
412
413 /* If the same bank is already set, nothing to do */
414 if ((data->bank & 0x07) == bank)
415 return 0;
416
417 /* Change to new bank, preserve all other bits */
418 bank |= data->bank & ~0x07;
419 err = i2c_smbus_write_byte_data(client, W83795_REG_BANKSEL, bank);
420 if (err < 0) {
421 dev_err(&client->dev,
422 "Failed to set bank to %d, err %d\n",
423 (int)bank, err);
424 return err;
425 }
426 data->bank = bank;
427
428 return 0;
429}
430
431/* Must be called with data->update_lock held, except during initialization */
432static u8 w83795_read(struct i2c_client *client, u16 reg)
433{
434 int err;
435
436 err = w83795_set_bank(client, reg >> 8);
437 if (err < 0)
438 return 0x00; /* Arbitrary */
439
440 err = i2c_smbus_read_byte_data(client, reg & 0xff);
441 if (err < 0) {
442 dev_err(&client->dev,
443 "Failed to read from register 0x%03x, err %d\n",
444 (int)reg, err);
445 return 0x00; /* Arbitrary */
446 }
447 return err;
448}
449
450/* Must be called with data->update_lock held, except during initialization */
451static int w83795_write(struct i2c_client *client, u16 reg, u8 value)
452{
453 int err;
454
455 err = w83795_set_bank(client, reg >> 8);
456 if (err < 0)
457 return err;
458
459 err = i2c_smbus_write_byte_data(client, reg & 0xff, value);
460 if (err < 0)
461 dev_err(&client->dev,
462 "Failed to write to register 0x%03x, err %d\n",
463 (int)reg, err);
464 return err;
465}
466
467static void w83795_update_limits(struct i2c_client *client)
468{
469 struct w83795_data *data = i2c_get_clientdata(client);
470 int i, limit;
471 u8 lsb;
472
473 /* Read the voltage limits */
474 for (i = 0; i < ARRAY_SIZE(data->in); i++) {
475 if (!(data->has_in & (1 << i)))
476 continue;
477 data->in[i][IN_MAX] =
478 w83795_read(client, W83795_REG_IN[i][IN_MAX]);
479 data->in[i][IN_LOW] =
480 w83795_read(client, W83795_REG_IN[i][IN_LOW]);
481 }
482 for (i = 0; i < ARRAY_SIZE(data->in_lsb); i++) {
483 if ((i == 2 && data->chip_type == w83795adg) ||
484 (i >= 4 && !(data->has_in & (1 << (i + 11)))))
485 continue;
486 data->in_lsb[i][IN_MAX] =
487 w83795_read(client, IN_LSB_REG(i, IN_MAX));
488 data->in_lsb[i][IN_LOW] =
489 w83795_read(client, IN_LSB_REG(i, IN_LOW));
490 }
491
492 /* Read the fan limits */
493 lsb = 0; /* Silent false gcc warning */
494 for (i = 0; i < ARRAY_SIZE(data->fan); i++) {
495 /*
496 * Each register contains LSB for 2 fans, but we want to
497 * read it only once to save time
498 */
499 if ((i & 1) == 0 && (data->has_fan & (3 << i)))
500 lsb = w83795_read(client, W83795_REG_FAN_MIN_LSB(i));
501
502 if (!(data->has_fan & (1 << i)))
503 continue;
504 data->fan_min[i] =
505 w83795_read(client, W83795_REG_FAN_MIN_HL(i)) << 4;
506 data->fan_min[i] |=
507 (lsb >> W83795_REG_FAN_MIN_LSB_SHIFT(i)) & 0x0F;
508 }
509
510 /* Read the temperature limits */
511 for (i = 0; i < ARRAY_SIZE(data->temp); i++) {
512 if (!(data->has_temp & (1 << i)))
513 continue;
514 for (limit = TEMP_CRIT; limit <= TEMP_WARN_HYST; limit++)
515 data->temp[i][limit] =
516 w83795_read(client, W83795_REG_TEMP[i][limit]);
517 }
518
519 /* Read the DTS limits */
520 if (data->enable_dts) {
521 for (limit = DTS_CRIT; limit <= DTS_WARN_HYST; limit++)
522 data->dts_ext[limit] =
523 w83795_read(client, W83795_REG_DTS_EXT(limit));
524 }
525
526 /* Read beep settings */
527 if (data->enable_beep) {
528 for (i = 0; i < ARRAY_SIZE(data->beeps); i++)
529 data->beeps[i] =
530 w83795_read(client, W83795_REG_BEEP(i));
531 }
532
533 data->valid_limits = 1;
534}
535
536static struct w83795_data *w83795_update_pwm_config(struct device *dev)
537{
538 struct i2c_client *client = to_i2c_client(dev);
539 struct w83795_data *data = i2c_get_clientdata(client);
540 int i, tmp;
541
542 mutex_lock(&data->update_lock);
543
544 if (data->valid_pwm_config)
545 goto END;
546
547 /* Read temperature source selection */
548 for (i = 0; i < ARRAY_SIZE(data->temp_src); i++)
549 data->temp_src[i] = w83795_read(client, W83795_REG_TSS(i));
550
551 /* Read automatic fan speed control settings */
552 data->pwm_fcms[0] = w83795_read(client, W83795_REG_FCMS1);
553 data->pwm_fcms[1] = w83795_read(client, W83795_REG_FCMS2);
554 for (i = 0; i < ARRAY_SIZE(data->pwm_tfmr); i++)
555 data->pwm_tfmr[i] = w83795_read(client, W83795_REG_TFMR(i));
556 data->pwm_fomc = w83795_read(client, W83795_REG_FOMC);
557 for (i = 0; i < data->has_pwm; i++) {
558 for (tmp = PWM_FREQ; tmp <= PWM_STOP_TIME; tmp++)
559 data->pwm[i][tmp] =
560 w83795_read(client, W83795_REG_PWM(i, tmp));
561 }
562 for (i = 0; i < ARRAY_SIZE(data->target_speed); i++) {
563 data->target_speed[i] =
564 w83795_read(client, W83795_REG_FTSH(i)) << 4;
565 data->target_speed[i] |=
566 w83795_read(client, W83795_REG_FTSL(i)) >> 4;
567 }
568 data->tol_speed = w83795_read(client, W83795_REG_TFTS) & 0x3f;
569
570 for (i = 0; i < ARRAY_SIZE(data->pwm_temp); i++) {
571 data->pwm_temp[i][TEMP_PWM_TTTI] =
572 w83795_read(client, W83795_REG_TTTI(i)) & 0x7f;
573 data->pwm_temp[i][TEMP_PWM_CTFS] =
574 w83795_read(client, W83795_REG_CTFS(i));
575 tmp = w83795_read(client, W83795_REG_HT(i));
576 data->pwm_temp[i][TEMP_PWM_HCT] = tmp >> 4;
577 data->pwm_temp[i][TEMP_PWM_HOT] = tmp & 0x0f;
578 }
579
580 /* Read SmartFanIV trip points */
581 for (i = 0; i < ARRAY_SIZE(data->sf4_reg); i++) {
582 for (tmp = 0; tmp < 7; tmp++) {
583 data->sf4_reg[i][SF4_TEMP][tmp] =
584 w83795_read(client,
585 W83795_REG_SF4_TEMP(i, tmp));
586 data->sf4_reg[i][SF4_PWM][tmp] =
587 w83795_read(client, W83795_REG_SF4_PWM(i, tmp));
588 }
589 }
590
591 /* Read setup PWM */
592 for (i = 0; i < ARRAY_SIZE(data->setup_pwm); i++)
593 data->setup_pwm[i] =
594 w83795_read(client, W83795_REG_SETUP_PWM(i));
595
596 data->valid_pwm_config = 1;
597
598END:
599 mutex_unlock(&data->update_lock);
600 return data;
601}
602
603static struct w83795_data *w83795_update_device(struct device *dev)
604{
605 struct i2c_client *client = to_i2c_client(dev);
606 struct w83795_data *data = i2c_get_clientdata(client);
607 u16 tmp;
608 u8 intrusion;
609 int i;
610
611 mutex_lock(&data->update_lock);
612
613 if (!data->valid_limits)
614 w83795_update_limits(client);
615
616 if (!(time_after(jiffies, data->last_updated + HZ * 2)
617 || !data->valid))
618 goto END;
619
620 /* Update the voltages value */
621 for (i = 0; i < ARRAY_SIZE(data->in); i++) {
622 if (!(data->has_in & (1 << i)))
623 continue;
624 tmp = w83795_read(client, W83795_REG_IN[i][IN_READ]) << 2;
625 tmp |= w83795_read(client, W83795_REG_VRLSB) >> 6;
626 data->in[i][IN_READ] = tmp;
627 }
628
629 /* in0-2 can have dynamic limits (W83795G only) */
630 if (data->has_dyn_in) {
631 u8 lsb_max = w83795_read(client, IN_LSB_REG(0, IN_MAX));
632 u8 lsb_low = w83795_read(client, IN_LSB_REG(0, IN_LOW));
633
634 for (i = 0; i < 3; i++) {
635 if (!(data->has_dyn_in & (1 << i)))
636 continue;
637 data->in[i][IN_MAX] =
638 w83795_read(client, W83795_REG_IN[i][IN_MAX]);
639 data->in[i][IN_LOW] =
640 w83795_read(client, W83795_REG_IN[i][IN_LOW]);
641 data->in_lsb[i][IN_MAX] = (lsb_max >> (2 * i)) & 0x03;
642 data->in_lsb[i][IN_LOW] = (lsb_low >> (2 * i)) & 0x03;
643 }
644 }
645
646 /* Update fan */
647 for (i = 0; i < ARRAY_SIZE(data->fan); i++) {
648 if (!(data->has_fan & (1 << i)))
649 continue;
650 data->fan[i] = w83795_read(client, W83795_REG_FAN(i)) << 4;
651 data->fan[i] |= w83795_read(client, W83795_REG_VRLSB) >> 4;
652 }
653
654 /* Update temperature */
655 for (i = 0; i < ARRAY_SIZE(data->temp); i++) {
656 data->temp[i][TEMP_READ] =
657 w83795_read(client, W83795_REG_TEMP[i][TEMP_READ]);
658 data->temp_read_vrlsb[i] =
659 w83795_read(client, W83795_REG_VRLSB);
660 }
661
662 /* Update dts temperature */
663 if (data->enable_dts) {
664 for (i = 0; i < ARRAY_SIZE(data->dts); i++) {
665 if (!(data->has_dts & (1 << i)))
666 continue;
667 data->dts[i] =
668 w83795_read(client, W83795_REG_DTS(i));
669 data->dts_read_vrlsb[i] =
670 w83795_read(client, W83795_REG_VRLSB);
671 }
672 }
673
674 /* Update pwm output */
675 for (i = 0; i < data->has_pwm; i++) {
676 data->pwm[i][PWM_OUTPUT] =
677 w83795_read(client, W83795_REG_PWM(i, PWM_OUTPUT));
678 }
679
680 /*
681 * Update intrusion and alarms
682 * It is important to read intrusion first, because reading from
683 * register SMI STS6 clears the interrupt status temporarily.
684 */
685 tmp = w83795_read(client, W83795_REG_ALARM_CTRL);
686 /* Switch to interrupt status for intrusion if needed */
687 if (tmp & ALARM_CTRL_RTSACS)
688 w83795_write(client, W83795_REG_ALARM_CTRL,
689 tmp & ~ALARM_CTRL_RTSACS);
690 intrusion = w83795_read(client, W83795_REG_ALARM(5)) & (1 << 6);
691 /* Switch to real-time alarms */
692 w83795_write(client, W83795_REG_ALARM_CTRL, tmp | ALARM_CTRL_RTSACS);
693 for (i = 0; i < ARRAY_SIZE(data->alarms); i++)
694 data->alarms[i] = w83795_read(client, W83795_REG_ALARM(i));
695 data->alarms[5] |= intrusion;
696 /* Restore original configuration if needed */
697 if (!(tmp & ALARM_CTRL_RTSACS))
698 w83795_write(client, W83795_REG_ALARM_CTRL,
699 tmp & ~ALARM_CTRL_RTSACS);
700
701 data->last_updated = jiffies;
702 data->valid = 1;
703
704END:
705 mutex_unlock(&data->update_lock);
706 return data;
707}
708
709/*
710 * Sysfs attributes
711 */
712
713#define ALARM_STATUS 0
714#define BEEP_ENABLE 1
715static ssize_t
716show_alarm_beep(struct device *dev, struct device_attribute *attr, char *buf)
717{
718 struct w83795_data *data = w83795_update_device(dev);
719 struct sensor_device_attribute_2 *sensor_attr =
720 to_sensor_dev_attr_2(attr);
721 int nr = sensor_attr->nr;
722 int index = sensor_attr->index >> 3;
723 int bit = sensor_attr->index & 0x07;
724 u8 val;
725
726 if (nr == ALARM_STATUS)
727 val = (data->alarms[index] >> bit) & 1;
728 else /* BEEP_ENABLE */
729 val = (data->beeps[index] >> bit) & 1;
730
731 return sprintf(buf, "%u\n", val);
732}
733
734static ssize_t
735store_beep(struct device *dev, struct device_attribute *attr,
736 const char *buf, size_t count)
737{
738 struct i2c_client *client = to_i2c_client(dev);
739 struct w83795_data *data = i2c_get_clientdata(client);
740 struct sensor_device_attribute_2 *sensor_attr =
741 to_sensor_dev_attr_2(attr);
742 int index = sensor_attr->index >> 3;
743 int shift = sensor_attr->index & 0x07;
744 u8 beep_bit = 1 << shift;
745 unsigned long val;
746
747 if (kstrtoul(buf, 10, &val) < 0)
748 return -EINVAL;
749 if (val != 0 && val != 1)
750 return -EINVAL;
751
752 mutex_lock(&data->update_lock);
753 data->beeps[index] = w83795_read(client, W83795_REG_BEEP(index));
754 data->beeps[index] &= ~beep_bit;
755 data->beeps[index] |= val << shift;
756 w83795_write(client, W83795_REG_BEEP(index), data->beeps[index]);
757 mutex_unlock(&data->update_lock);
758
759 return count;
760}
761
762/* Write 0 to clear chassis alarm */
763static ssize_t
764store_chassis_clear(struct device *dev,
765 struct device_attribute *attr, const char *buf,
766 size_t count)
767{
768 struct i2c_client *client = to_i2c_client(dev);
769 struct w83795_data *data = i2c_get_clientdata(client);
770 unsigned long val;
771
772 if (kstrtoul(buf, 10, &val) < 0 || val != 0)
773 return -EINVAL;
774
775 mutex_lock(&data->update_lock);
776 val = w83795_read(client, W83795_REG_CLR_CHASSIS);
777 val |= 0x80;
778 w83795_write(client, W83795_REG_CLR_CHASSIS, val);
779
780 /* Clear status and force cache refresh */
781 w83795_read(client, W83795_REG_ALARM(5));
782 data->valid = 0;
783 mutex_unlock(&data->update_lock);
784 return count;
785}
786
787#define FAN_INPUT 0
788#define FAN_MIN 1
789static ssize_t
790show_fan(struct device *dev, struct device_attribute *attr, char *buf)
791{
792 struct sensor_device_attribute_2 *sensor_attr =
793 to_sensor_dev_attr_2(attr);
794 int nr = sensor_attr->nr;
795 int index = sensor_attr->index;
796 struct w83795_data *data = w83795_update_device(dev);
797 u16 val;
798
799 if (nr == FAN_INPUT)
800 val = data->fan[index] & 0x0fff;
801 else
802 val = data->fan_min[index] & 0x0fff;
803
804 return sprintf(buf, "%lu\n", fan_from_reg(val));
805}
806
807static ssize_t
808store_fan_min(struct device *dev, struct device_attribute *attr,
809 const char *buf, size_t count)
810{
811 struct sensor_device_attribute_2 *sensor_attr =
812 to_sensor_dev_attr_2(attr);
813 int index = sensor_attr->index;
814 struct i2c_client *client = to_i2c_client(dev);
815 struct w83795_data *data = i2c_get_clientdata(client);
816 unsigned long val;
817
818 if (kstrtoul(buf, 10, &val))
819 return -EINVAL;
820 val = fan_to_reg(val);
821
822 mutex_lock(&data->update_lock);
823 data->fan_min[index] = val;
824 w83795_write(client, W83795_REG_FAN_MIN_HL(index), (val >> 4) & 0xff);
825 val &= 0x0f;
826 if (index & 1) {
827 val <<= 4;
828 val |= w83795_read(client, W83795_REG_FAN_MIN_LSB(index))
829 & 0x0f;
830 } else {
831 val |= w83795_read(client, W83795_REG_FAN_MIN_LSB(index))
832 & 0xf0;
833 }
834 w83795_write(client, W83795_REG_FAN_MIN_LSB(index), val & 0xff);
835 mutex_unlock(&data->update_lock);
836
837 return count;
838}
839
840static ssize_t
841show_pwm(struct device *dev, struct device_attribute *attr, char *buf)
842{
843 struct w83795_data *data;
844 struct sensor_device_attribute_2 *sensor_attr =
845 to_sensor_dev_attr_2(attr);
846 int nr = sensor_attr->nr;
847 int index = sensor_attr->index;
848 unsigned int val;
849
850 data = nr == PWM_OUTPUT ? w83795_update_device(dev)
851 : w83795_update_pwm_config(dev);
852
853 switch (nr) {
854 case PWM_STOP_TIME:
855 val = time_from_reg(data->pwm[index][nr]);
856 break;
857 case PWM_FREQ:
858 val = pwm_freq_from_reg(data->pwm[index][nr], data->clkin);
859 break;
860 default:
861 val = data->pwm[index][nr];
862 break;
863 }
864
865 return sprintf(buf, "%u\n", val);
866}
867
868static ssize_t
869store_pwm(struct device *dev, struct device_attribute *attr,
870 const char *buf, size_t count)
871{
872 struct i2c_client *client = to_i2c_client(dev);
873 struct w83795_data *data = i2c_get_clientdata(client);
874 struct sensor_device_attribute_2 *sensor_attr =
875 to_sensor_dev_attr_2(attr);
876 int nr = sensor_attr->nr;
877 int index = sensor_attr->index;
878 unsigned long val;
879
880 if (kstrtoul(buf, 10, &val) < 0)
881 return -EINVAL;
882
883 mutex_lock(&data->update_lock);
884 switch (nr) {
885 case PWM_STOP_TIME:
886 val = time_to_reg(val);
887 break;
888 case PWM_FREQ:
889 val = pwm_freq_to_reg(val, data->clkin);
890 break;
891 default:
892 val = SENSORS_LIMIT(val, 0, 0xff);
893 break;
894 }
895 w83795_write(client, W83795_REG_PWM(index, nr), val);
896 data->pwm[index][nr] = val;
897 mutex_unlock(&data->update_lock);
898 return count;
899}
900
901static ssize_t
902show_pwm_enable(struct device *dev, struct device_attribute *attr, char *buf)
903{
904 struct sensor_device_attribute_2 *sensor_attr =
905 to_sensor_dev_attr_2(attr);
906 struct w83795_data *data = w83795_update_pwm_config(dev);
907 int index = sensor_attr->index;
908 u8 tmp;
909
910 /* Speed cruise mode */
911 if (data->pwm_fcms[0] & (1 << index)) {
912 tmp = 2;
913 goto out;
914 }
915 /* Thermal cruise or SmartFan IV mode */
916 for (tmp = 0; tmp < 6; tmp++) {
917 if (data->pwm_tfmr[tmp] & (1 << index)) {
918 tmp = 3;
919 goto out;
920 }
921 }
922 /* Manual mode */
923 tmp = 1;
924
925out:
926 return sprintf(buf, "%u\n", tmp);
927}
928
929static ssize_t
930store_pwm_enable(struct device *dev, struct device_attribute *attr,
931 const char *buf, size_t count)
932{
933 struct i2c_client *client = to_i2c_client(dev);
934 struct w83795_data *data = w83795_update_pwm_config(dev);
935 struct sensor_device_attribute_2 *sensor_attr =
936 to_sensor_dev_attr_2(attr);
937 int index = sensor_attr->index;
938 unsigned long val;
939 int i;
940
941 if (kstrtoul(buf, 10, &val) < 0)
942 return -EINVAL;
943 if (val < 1 || val > 2)
944 return -EINVAL;
945
946#ifndef CONFIG_SENSORS_W83795_FANCTRL
947 if (val > 1) {
948 dev_warn(dev, "Automatic fan speed control support disabled\n");
949 dev_warn(dev, "Build with CONFIG_SENSORS_W83795_FANCTRL=y if you want it\n");
950 return -EOPNOTSUPP;
951 }
952#endif
953
954 mutex_lock(&data->update_lock);
955 switch (val) {
956 case 1:
957 /* Clear speed cruise mode bits */
958 data->pwm_fcms[0] &= ~(1 << index);
959 w83795_write(client, W83795_REG_FCMS1, data->pwm_fcms[0]);
960 /* Clear thermal cruise mode bits */
961 for (i = 0; i < 6; i++) {
962 data->pwm_tfmr[i] &= ~(1 << index);
963 w83795_write(client, W83795_REG_TFMR(i),
964 data->pwm_tfmr[i]);
965 }
966 break;
967 case 2:
968 data->pwm_fcms[0] |= (1 << index);
969 w83795_write(client, W83795_REG_FCMS1, data->pwm_fcms[0]);
970 break;
971 }
972 mutex_unlock(&data->update_lock);
973 return count;
974}
975
976static ssize_t
977show_pwm_mode(struct device *dev, struct device_attribute *attr, char *buf)
978{
979 struct w83795_data *data = w83795_update_pwm_config(dev);
980 int index = to_sensor_dev_attr_2(attr)->index;
981 unsigned int mode;
982
983 if (data->pwm_fomc & (1 << index))
984 mode = 0; /* DC */
985 else
986 mode = 1; /* PWM */
987
988 return sprintf(buf, "%u\n", mode);
989}
990
991/*
992 * Check whether a given temperature source can ever be useful.
993 * Returns the number of selectable temperature channels which are
994 * enabled.
995 */
996static int w83795_tss_useful(const struct w83795_data *data, int tsrc)
997{
998 int useful = 0, i;
999
1000 for (i = 0; i < 4; i++) {
1001 if (tss_map[i][tsrc] == TSS_MAP_RESERVED)
1002 continue;
1003 if (tss_map[i][tsrc] < 6) /* Analog */
1004 useful += (data->has_temp >> tss_map[i][tsrc]) & 1;
1005 else /* Digital */
1006 useful += (data->has_dts >> (tss_map[i][tsrc] - 6)) & 1;
1007 }
1008
1009 return useful;
1010}
1011
1012static ssize_t
1013show_temp_src(struct device *dev, struct device_attribute *attr, char *buf)
1014{
1015 struct sensor_device_attribute_2 *sensor_attr =
1016 to_sensor_dev_attr_2(attr);
1017 struct w83795_data *data = w83795_update_pwm_config(dev);
1018 int index = sensor_attr->index;
1019 u8 tmp = data->temp_src[index / 2];
1020
1021 if (index & 1)
1022 tmp >>= 4; /* Pick high nibble */
1023 else
1024 tmp &= 0x0f; /* Pick low nibble */
1025
1026 /* Look-up the actual temperature channel number */
1027 if (tmp >= 4 || tss_map[tmp][index] == TSS_MAP_RESERVED)
1028 return -EINVAL; /* Shouldn't happen */
1029
1030 return sprintf(buf, "%u\n", (unsigned int)tss_map[tmp][index] + 1);
1031}
1032
1033static ssize_t
1034store_temp_src(struct device *dev, struct device_attribute *attr,
1035 const char *buf, size_t count)
1036{
1037 struct i2c_client *client = to_i2c_client(dev);
1038 struct w83795_data *data = w83795_update_pwm_config(dev);
1039 struct sensor_device_attribute_2 *sensor_attr =
1040 to_sensor_dev_attr_2(attr);
1041 int index = sensor_attr->index;
1042 int tmp;
1043 unsigned long channel;
1044 u8 val = index / 2;
1045
1046 if (kstrtoul(buf, 10, &channel) < 0 ||
1047 channel < 1 || channel > 14)
1048 return -EINVAL;
1049
1050 /* Check if request can be fulfilled */
1051 for (tmp = 0; tmp < 4; tmp++) {
1052 if (tss_map[tmp][index] == channel - 1)
1053 break;
1054 }
1055 if (tmp == 4) /* No match */
1056 return -EINVAL;
1057
1058 mutex_lock(&data->update_lock);
1059 if (index & 1) {
1060 tmp <<= 4;
1061 data->temp_src[val] &= 0x0f;
1062 } else {
1063 data->temp_src[val] &= 0xf0;
1064 }
1065 data->temp_src[val] |= tmp;
1066 w83795_write(client, W83795_REG_TSS(val), data->temp_src[val]);
1067 mutex_unlock(&data->update_lock);
1068
1069 return count;
1070}
1071
1072#define TEMP_PWM_ENABLE 0
1073#define TEMP_PWM_FAN_MAP 1
1074static ssize_t
1075show_temp_pwm_enable(struct device *dev, struct device_attribute *attr,
1076 char *buf)
1077{
1078 struct w83795_data *data = w83795_update_pwm_config(dev);
1079 struct sensor_device_attribute_2 *sensor_attr =
1080 to_sensor_dev_attr_2(attr);
1081 int nr = sensor_attr->nr;
1082 int index = sensor_attr->index;
1083 u8 tmp = 0xff;
1084
1085 switch (nr) {
1086 case TEMP_PWM_ENABLE:
1087 tmp = (data->pwm_fcms[1] >> index) & 1;
1088 if (tmp)
1089 tmp = 4;
1090 else
1091 tmp = 3;
1092 break;
1093 case TEMP_PWM_FAN_MAP:
1094 tmp = data->pwm_tfmr[index];
1095 break;
1096 }
1097
1098 return sprintf(buf, "%u\n", tmp);
1099}
1100
1101static ssize_t
1102store_temp_pwm_enable(struct device *dev, struct device_attribute *attr,
1103 const char *buf, size_t count)
1104{
1105 struct i2c_client *client = to_i2c_client(dev);
1106 struct w83795_data *data = w83795_update_pwm_config(dev);
1107 struct sensor_device_attribute_2 *sensor_attr =
1108 to_sensor_dev_attr_2(attr);
1109 int nr = sensor_attr->nr;
1110 int index = sensor_attr->index;
1111 unsigned long tmp;
1112
1113 if (kstrtoul(buf, 10, &tmp) < 0)
1114 return -EINVAL;
1115
1116 switch (nr) {
1117 case TEMP_PWM_ENABLE:
1118 if (tmp != 3 && tmp != 4)
1119 return -EINVAL;
1120 tmp -= 3;
1121 mutex_lock(&data->update_lock);
1122 data->pwm_fcms[1] &= ~(1 << index);
1123 data->pwm_fcms[1] |= tmp << index;
1124 w83795_write(client, W83795_REG_FCMS2, data->pwm_fcms[1]);
1125 mutex_unlock(&data->update_lock);
1126 break;
1127 case TEMP_PWM_FAN_MAP:
1128 mutex_lock(&data->update_lock);
1129 tmp = SENSORS_LIMIT(tmp, 0, 0xff);
1130 w83795_write(client, W83795_REG_TFMR(index), tmp);
1131 data->pwm_tfmr[index] = tmp;
1132 mutex_unlock(&data->update_lock);
1133 break;
1134 }
1135 return count;
1136}
1137
1138#define FANIN_TARGET 0
1139#define FANIN_TOL 1
1140static ssize_t
1141show_fanin(struct device *dev, struct device_attribute *attr, char *buf)
1142{
1143 struct w83795_data *data = w83795_update_pwm_config(dev);
1144 struct sensor_device_attribute_2 *sensor_attr =
1145 to_sensor_dev_attr_2(attr);
1146 int nr = sensor_attr->nr;
1147 int index = sensor_attr->index;
1148 u16 tmp = 0;
1149
1150 switch (nr) {
1151 case FANIN_TARGET:
1152 tmp = fan_from_reg(data->target_speed[index]);
1153 break;
1154 case FANIN_TOL:
1155 tmp = data->tol_speed;
1156 break;
1157 }
1158
1159 return sprintf(buf, "%u\n", tmp);
1160}
1161
1162static ssize_t
1163store_fanin(struct device *dev, struct device_attribute *attr,
1164 const char *buf, size_t count)
1165{
1166 struct i2c_client *client = to_i2c_client(dev);
1167 struct w83795_data *data = i2c_get_clientdata(client);
1168 struct sensor_device_attribute_2 *sensor_attr =
1169 to_sensor_dev_attr_2(attr);
1170 int nr = sensor_attr->nr;
1171 int index = sensor_attr->index;
1172 unsigned long val;
1173
1174 if (kstrtoul(buf, 10, &val) < 0)
1175 return -EINVAL;
1176
1177 mutex_lock(&data->update_lock);
1178 switch (nr) {
1179 case FANIN_TARGET:
1180 val = fan_to_reg(SENSORS_LIMIT(val, 0, 0xfff));
1181 w83795_write(client, W83795_REG_FTSH(index), val >> 4);
1182 w83795_write(client, W83795_REG_FTSL(index), (val << 4) & 0xf0);
1183 data->target_speed[index] = val;
1184 break;
1185 case FANIN_TOL:
1186 val = SENSORS_LIMIT(val, 0, 0x3f);
1187 w83795_write(client, W83795_REG_TFTS, val);
1188 data->tol_speed = val;
1189 break;
1190 }
1191 mutex_unlock(&data->update_lock);
1192
1193 return count;
1194}
1195
1196
1197static ssize_t
1198show_temp_pwm(struct device *dev, struct device_attribute *attr, char *buf)
1199{
1200 struct w83795_data *data = w83795_update_pwm_config(dev);
1201 struct sensor_device_attribute_2 *sensor_attr =
1202 to_sensor_dev_attr_2(attr);
1203 int nr = sensor_attr->nr;
1204 int index = sensor_attr->index;
1205 long tmp = temp_from_reg(data->pwm_temp[index][nr]);
1206
1207 return sprintf(buf, "%ld\n", tmp);
1208}
1209
1210static ssize_t
1211store_temp_pwm(struct device *dev, struct device_attribute *attr,
1212 const char *buf, size_t count)
1213{
1214 struct i2c_client *client = to_i2c_client(dev);
1215 struct w83795_data *data = i2c_get_clientdata(client);
1216 struct sensor_device_attribute_2 *sensor_attr =
1217 to_sensor_dev_attr_2(attr);
1218 int nr = sensor_attr->nr;
1219 int index = sensor_attr->index;
1220 unsigned long val;
1221 u8 tmp;
1222
1223 if (kstrtoul(buf, 10, &val) < 0)
1224 return -EINVAL;
1225 val /= 1000;
1226
1227 mutex_lock(&data->update_lock);
1228 switch (nr) {
1229 case TEMP_PWM_TTTI:
1230 val = SENSORS_LIMIT(val, 0, 0x7f);
1231 w83795_write(client, W83795_REG_TTTI(index), val);
1232 break;
1233 case TEMP_PWM_CTFS:
1234 val = SENSORS_LIMIT(val, 0, 0x7f);
1235 w83795_write(client, W83795_REG_CTFS(index), val);
1236 break;
1237 case TEMP_PWM_HCT:
1238 val = SENSORS_LIMIT(val, 0, 0x0f);
1239 tmp = w83795_read(client, W83795_REG_HT(index));
1240 tmp &= 0x0f;
1241 tmp |= (val << 4) & 0xf0;
1242 w83795_write(client, W83795_REG_HT(index), tmp);
1243 break;
1244 case TEMP_PWM_HOT:
1245 val = SENSORS_LIMIT(val, 0, 0x0f);
1246 tmp = w83795_read(client, W83795_REG_HT(index));
1247 tmp &= 0xf0;
1248 tmp |= val & 0x0f;
1249 w83795_write(client, W83795_REG_HT(index), tmp);
1250 break;
1251 }
1252 data->pwm_temp[index][nr] = val;
1253 mutex_unlock(&data->update_lock);
1254
1255 return count;
1256}
1257
1258static ssize_t
1259show_sf4_pwm(struct device *dev, struct device_attribute *attr, char *buf)
1260{
1261 struct w83795_data *data = w83795_update_pwm_config(dev);
1262 struct sensor_device_attribute_2 *sensor_attr =
1263 to_sensor_dev_attr_2(attr);
1264 int nr = sensor_attr->nr;
1265 int index = sensor_attr->index;
1266
1267 return sprintf(buf, "%u\n", data->sf4_reg[index][SF4_PWM][nr]);
1268}
1269
1270static ssize_t
1271store_sf4_pwm(struct device *dev, struct device_attribute *attr,
1272 const char *buf, size_t count)
1273{
1274 struct i2c_client *client = to_i2c_client(dev);
1275 struct w83795_data *data = i2c_get_clientdata(client);
1276 struct sensor_device_attribute_2 *sensor_attr =
1277 to_sensor_dev_attr_2(attr);
1278 int nr = sensor_attr->nr;
1279 int index = sensor_attr->index;
1280 unsigned long val;
1281
1282 if (kstrtoul(buf, 10, &val) < 0)
1283 return -EINVAL;
1284
1285 mutex_lock(&data->update_lock);
1286 w83795_write(client, W83795_REG_SF4_PWM(index, nr), val);
1287 data->sf4_reg[index][SF4_PWM][nr] = val;
1288 mutex_unlock(&data->update_lock);
1289
1290 return count;
1291}
1292
1293static ssize_t
1294show_sf4_temp(struct device *dev, struct device_attribute *attr, char *buf)
1295{
1296 struct w83795_data *data = w83795_update_pwm_config(dev);
1297 struct sensor_device_attribute_2 *sensor_attr =
1298 to_sensor_dev_attr_2(attr);
1299 int nr = sensor_attr->nr;
1300 int index = sensor_attr->index;
1301
1302 return sprintf(buf, "%u\n",
1303 (data->sf4_reg[index][SF4_TEMP][nr]) * 1000);
1304}
1305
1306static ssize_t
1307store_sf4_temp(struct device *dev, struct device_attribute *attr,
1308 const char *buf, size_t count)
1309{
1310 struct i2c_client *client = to_i2c_client(dev);
1311 struct w83795_data *data = i2c_get_clientdata(client);
1312 struct sensor_device_attribute_2 *sensor_attr =
1313 to_sensor_dev_attr_2(attr);
1314 int nr = sensor_attr->nr;
1315 int index = sensor_attr->index;
1316 unsigned long val;
1317
1318 if (kstrtoul(buf, 10, &val) < 0)
1319 return -EINVAL;
1320 val /= 1000;
1321
1322 mutex_lock(&data->update_lock);
1323 w83795_write(client, W83795_REG_SF4_TEMP(index, nr), val);
1324 data->sf4_reg[index][SF4_TEMP][nr] = val;
1325 mutex_unlock(&data->update_lock);
1326
1327 return count;
1328}
1329
1330
1331static ssize_t
1332show_temp(struct device *dev, struct device_attribute *attr, char *buf)
1333{
1334 struct sensor_device_attribute_2 *sensor_attr =
1335 to_sensor_dev_attr_2(attr);
1336 int nr = sensor_attr->nr;
1337 int index = sensor_attr->index;
1338 struct w83795_data *data = w83795_update_device(dev);
1339 long temp = temp_from_reg(data->temp[index][nr]);
1340
1341 if (nr == TEMP_READ)
1342 temp += (data->temp_read_vrlsb[index] >> 6) * 250;
1343 return sprintf(buf, "%ld\n", temp);
1344}
1345
1346static ssize_t
1347store_temp(struct device *dev, struct device_attribute *attr,
1348 const char *buf, size_t count)
1349{
1350 struct sensor_device_attribute_2 *sensor_attr =
1351 to_sensor_dev_attr_2(attr);
1352 int nr = sensor_attr->nr;
1353 int index = sensor_attr->index;
1354 struct i2c_client *client = to_i2c_client(dev);
1355 struct w83795_data *data = i2c_get_clientdata(client);
1356 long tmp;
1357
1358 if (kstrtol(buf, 10, &tmp) < 0)
1359 return -EINVAL;
1360
1361 mutex_lock(&data->update_lock);
1362 data->temp[index][nr] = temp_to_reg(tmp, -128, 127);
1363 w83795_write(client, W83795_REG_TEMP[index][nr], data->temp[index][nr]);
1364 mutex_unlock(&data->update_lock);
1365 return count;
1366}
1367
1368
1369static ssize_t
1370show_dts_mode(struct device *dev, struct device_attribute *attr, char *buf)
1371{
1372 struct w83795_data *data = dev_get_drvdata(dev);
1373 int tmp;
1374
1375 if (data->enable_dts & 2)
1376 tmp = 5;
1377 else
1378 tmp = 6;
1379
1380 return sprintf(buf, "%d\n", tmp);
1381}
1382
1383static ssize_t
1384show_dts(struct device *dev, struct device_attribute *attr, char *buf)
1385{
1386 struct sensor_device_attribute_2 *sensor_attr =
1387 to_sensor_dev_attr_2(attr);
1388 int index = sensor_attr->index;
1389 struct w83795_data *data = w83795_update_device(dev);
1390 long temp = temp_from_reg(data->dts[index]);
1391
1392 temp += (data->dts_read_vrlsb[index] >> 6) * 250;
1393 return sprintf(buf, "%ld\n", temp);
1394}
1395
1396static ssize_t
1397show_dts_ext(struct device *dev, struct device_attribute *attr, char *buf)
1398{
1399 struct sensor_device_attribute_2 *sensor_attr =
1400 to_sensor_dev_attr_2(attr);
1401 int nr = sensor_attr->nr;
1402 struct w83795_data *data = dev_get_drvdata(dev);
1403 long temp = temp_from_reg(data->dts_ext[nr]);
1404
1405 return sprintf(buf, "%ld\n", temp);
1406}
1407
1408static ssize_t
1409store_dts_ext(struct device *dev, struct device_attribute *attr,
1410 const char *buf, size_t count)
1411{
1412 struct sensor_device_attribute_2 *sensor_attr =
1413 to_sensor_dev_attr_2(attr);
1414 int nr = sensor_attr->nr;
1415 struct i2c_client *client = to_i2c_client(dev);
1416 struct w83795_data *data = i2c_get_clientdata(client);
1417 long tmp;
1418
1419 if (kstrtol(buf, 10, &tmp) < 0)
1420 return -EINVAL;
1421
1422 mutex_lock(&data->update_lock);
1423 data->dts_ext[nr] = temp_to_reg(tmp, -128, 127);
1424 w83795_write(client, W83795_REG_DTS_EXT(nr), data->dts_ext[nr]);
1425 mutex_unlock(&data->update_lock);
1426 return count;
1427}
1428
1429
1430static ssize_t
1431show_temp_mode(struct device *dev, struct device_attribute *attr, char *buf)
1432{
1433 struct w83795_data *data = dev_get_drvdata(dev);
1434 struct sensor_device_attribute_2 *sensor_attr =
1435 to_sensor_dev_attr_2(attr);
1436 int index = sensor_attr->index;
1437 int tmp;
1438
1439 if (data->temp_mode & (1 << index))
1440 tmp = 3; /* Thermal diode */
1441 else
1442 tmp = 4; /* Thermistor */
1443
1444 return sprintf(buf, "%d\n", tmp);
1445}
1446
1447/* Only for temp1-4 (temp5-6 can only be thermistor) */
1448static ssize_t
1449store_temp_mode(struct device *dev, struct device_attribute *attr,
1450 const char *buf, size_t count)
1451{
1452 struct i2c_client *client = to_i2c_client(dev);
1453 struct w83795_data *data = i2c_get_clientdata(client);
1454 struct sensor_device_attribute_2 *sensor_attr =
1455 to_sensor_dev_attr_2(attr);
1456 int index = sensor_attr->index;
1457 int reg_shift;
1458 unsigned long val;
1459 u8 tmp;
1460
1461 if (kstrtoul(buf, 10, &val) < 0)
1462 return -EINVAL;
1463 if ((val != 4) && (val != 3))
1464 return -EINVAL;
1465
1466 mutex_lock(&data->update_lock);
1467 if (val == 3) {
1468 /* Thermal diode */
1469 val = 0x01;
1470 data->temp_mode |= 1 << index;
1471 } else if (val == 4) {
1472 /* Thermistor */
1473 val = 0x03;
1474 data->temp_mode &= ~(1 << index);
1475 }
1476
1477 reg_shift = 2 * index;
1478 tmp = w83795_read(client, W83795_REG_TEMP_CTRL2);
1479 tmp &= ~(0x03 << reg_shift);
1480 tmp |= val << reg_shift;
1481 w83795_write(client, W83795_REG_TEMP_CTRL2, tmp);
1482
1483 mutex_unlock(&data->update_lock);
1484 return count;
1485}
1486
1487
1488/* show/store VIN */
1489static ssize_t
1490show_in(struct device *dev, struct device_attribute *attr, char *buf)
1491{
1492 struct sensor_device_attribute_2 *sensor_attr =
1493 to_sensor_dev_attr_2(attr);
1494 int nr = sensor_attr->nr;
1495 int index = sensor_attr->index;
1496 struct w83795_data *data = w83795_update_device(dev);
1497 u16 val = data->in[index][nr];
1498 u8 lsb_idx;
1499
1500 switch (nr) {
1501 case IN_READ:
1502 /* calculate this value again by sensors as sensors3.conf */
1503 if ((index >= 17) &&
1504 !((data->has_gain >> (index - 17)) & 1))
1505 val *= 8;
1506 break;
1507 case IN_MAX:
1508 case IN_LOW:
1509 lsb_idx = IN_LSB_SHIFT_IDX[index][IN_LSB_IDX];
1510 val <<= 2;
1511 val |= (data->in_lsb[lsb_idx][nr] >>
1512 IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT]) & 0x03;
1513 if ((index >= 17) &&
1514 !((data->has_gain >> (index - 17)) & 1))
1515 val *= 8;
1516 break;
1517 }
1518 val = in_from_reg(index, val);
1519
1520 return sprintf(buf, "%d\n", val);
1521}
1522
1523static ssize_t
1524store_in(struct device *dev, struct device_attribute *attr,
1525 const char *buf, size_t count)
1526{
1527 struct sensor_device_attribute_2 *sensor_attr =
1528 to_sensor_dev_attr_2(attr);
1529 int nr = sensor_attr->nr;
1530 int index = sensor_attr->index;
1531 struct i2c_client *client = to_i2c_client(dev);
1532 struct w83795_data *data = i2c_get_clientdata(client);
1533 unsigned long val;
1534 u8 tmp;
1535 u8 lsb_idx;
1536
1537 if (kstrtoul(buf, 10, &val) < 0)
1538 return -EINVAL;
1539 val = in_to_reg(index, val);
1540
1541 if ((index >= 17) &&
1542 !((data->has_gain >> (index - 17)) & 1))
1543 val /= 8;
1544 val = SENSORS_LIMIT(val, 0, 0x3FF);
1545 mutex_lock(&data->update_lock);
1546
1547 lsb_idx = IN_LSB_SHIFT_IDX[index][IN_LSB_IDX];
1548 tmp = w83795_read(client, IN_LSB_REG(lsb_idx, nr));
1549 tmp &= ~(0x03 << IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT]);
1550 tmp |= (val & 0x03) << IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT];
1551 w83795_write(client, IN_LSB_REG(lsb_idx, nr), tmp);
1552 data->in_lsb[lsb_idx][nr] = tmp;
1553
1554 tmp = (val >> 2) & 0xff;
1555 w83795_write(client, W83795_REG_IN[index][nr], tmp);
1556 data->in[index][nr] = tmp;
1557
1558 mutex_unlock(&data->update_lock);
1559 return count;
1560}
1561
1562
1563#ifdef CONFIG_SENSORS_W83795_FANCTRL
1564static ssize_t
1565show_sf_setup(struct device *dev, struct device_attribute *attr, char *buf)
1566{
1567 struct sensor_device_attribute_2 *sensor_attr =
1568 to_sensor_dev_attr_2(attr);
1569 int nr = sensor_attr->nr;
1570 struct w83795_data *data = w83795_update_pwm_config(dev);
1571 u16 val = data->setup_pwm[nr];
1572
1573 switch (nr) {
1574 case SETUP_PWM_UPTIME:
1575 case SETUP_PWM_DOWNTIME:
1576 val = time_from_reg(val);
1577 break;
1578 }
1579
1580 return sprintf(buf, "%d\n", val);
1581}
1582
1583static ssize_t
1584store_sf_setup(struct device *dev, struct device_attribute *attr,
1585 const char *buf, size_t count)
1586{
1587 struct sensor_device_attribute_2 *sensor_attr =
1588 to_sensor_dev_attr_2(attr);
1589 int nr = sensor_attr->nr;
1590 struct i2c_client *client = to_i2c_client(dev);
1591 struct w83795_data *data = i2c_get_clientdata(client);
1592 unsigned long val;
1593
1594 if (kstrtoul(buf, 10, &val) < 0)
1595 return -EINVAL;
1596
1597 switch (nr) {
1598 case SETUP_PWM_DEFAULT:
1599 val = SENSORS_LIMIT(val, 0, 0xff);
1600 break;
1601 case SETUP_PWM_UPTIME:
1602 case SETUP_PWM_DOWNTIME:
1603 val = time_to_reg(val);
1604 if (val == 0)
1605 return -EINVAL;
1606 break;
1607 }
1608
1609 mutex_lock(&data->update_lock);
1610 data->setup_pwm[nr] = val;
1611 w83795_write(client, W83795_REG_SETUP_PWM(nr), val);
1612 mutex_unlock(&data->update_lock);
1613 return count;
1614}
1615#endif
1616
1617
1618#define NOT_USED -1
1619
1620/*
1621 * Don't change the attribute order, _max, _min and _beep are accessed by index
1622 * somewhere else in the code
1623 */
1624#define SENSOR_ATTR_IN(index) { \
1625 SENSOR_ATTR_2(in##index##_input, S_IRUGO, show_in, NULL, \
1626 IN_READ, index), \
1627 SENSOR_ATTR_2(in##index##_max, S_IRUGO | S_IWUSR, show_in, \
1628 store_in, IN_MAX, index), \
1629 SENSOR_ATTR_2(in##index##_min, S_IRUGO | S_IWUSR, show_in, \
1630 store_in, IN_LOW, index), \
1631 SENSOR_ATTR_2(in##index##_alarm, S_IRUGO, show_alarm_beep, \
1632 NULL, ALARM_STATUS, index + ((index > 14) ? 1 : 0)), \
1633 SENSOR_ATTR_2(in##index##_beep, S_IWUSR | S_IRUGO, \
1634 show_alarm_beep, store_beep, BEEP_ENABLE, \
1635 index + ((index > 14) ? 1 : 0)) }
1636
1637/*
1638 * Don't change the attribute order, _beep is accessed by index
1639 * somewhere else in the code
1640 */
1641#define SENSOR_ATTR_FAN(index) { \
1642 SENSOR_ATTR_2(fan##index##_input, S_IRUGO, show_fan, \
1643 NULL, FAN_INPUT, index - 1), \
1644 SENSOR_ATTR_2(fan##index##_min, S_IWUSR | S_IRUGO, \
1645 show_fan, store_fan_min, FAN_MIN, index - 1), \
1646 SENSOR_ATTR_2(fan##index##_alarm, S_IRUGO, show_alarm_beep, \
1647 NULL, ALARM_STATUS, index + 31), \
1648 SENSOR_ATTR_2(fan##index##_beep, S_IWUSR | S_IRUGO, \
1649 show_alarm_beep, store_beep, BEEP_ENABLE, index + 31) }
1650
1651#define SENSOR_ATTR_PWM(index) { \
1652 SENSOR_ATTR_2(pwm##index, S_IWUSR | S_IRUGO, show_pwm, \
1653 store_pwm, PWM_OUTPUT, index - 1), \
1654 SENSOR_ATTR_2(pwm##index##_enable, S_IWUSR | S_IRUGO, \
1655 show_pwm_enable, store_pwm_enable, NOT_USED, index - 1), \
1656 SENSOR_ATTR_2(pwm##index##_mode, S_IRUGO, \
1657 show_pwm_mode, NULL, NOT_USED, index - 1), \
1658 SENSOR_ATTR_2(pwm##index##_freq, S_IWUSR | S_IRUGO, \
1659 show_pwm, store_pwm, PWM_FREQ, index - 1), \
1660 SENSOR_ATTR_2(pwm##index##_nonstop, S_IWUSR | S_IRUGO, \
1661 show_pwm, store_pwm, PWM_NONSTOP, index - 1), \
1662 SENSOR_ATTR_2(pwm##index##_start, S_IWUSR | S_IRUGO, \
1663 show_pwm, store_pwm, PWM_START, index - 1), \
1664 SENSOR_ATTR_2(pwm##index##_stop_time, S_IWUSR | S_IRUGO, \
1665 show_pwm, store_pwm, PWM_STOP_TIME, index - 1), \
1666 SENSOR_ATTR_2(fan##index##_target, S_IWUSR | S_IRUGO, \
1667 show_fanin, store_fanin, FANIN_TARGET, index - 1) }
1668
1669/*
1670 * Don't change the attribute order, _beep is accessed by index
1671 * somewhere else in the code
1672 */
1673#define SENSOR_ATTR_DTS(index) { \
1674 SENSOR_ATTR_2(temp##index##_type, S_IRUGO , \
1675 show_dts_mode, NULL, NOT_USED, index - 7), \
1676 SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_dts, \
1677 NULL, NOT_USED, index - 7), \
1678 SENSOR_ATTR_2(temp##index##_crit, S_IRUGO | S_IWUSR, show_dts_ext, \
1679 store_dts_ext, DTS_CRIT, NOT_USED), \
1680 SENSOR_ATTR_2(temp##index##_crit_hyst, S_IRUGO | S_IWUSR, \
1681 show_dts_ext, store_dts_ext, DTS_CRIT_HYST, NOT_USED), \
1682 SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_dts_ext, \
1683 store_dts_ext, DTS_WARN, NOT_USED), \
1684 SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR, \
1685 show_dts_ext, store_dts_ext, DTS_WARN_HYST, NOT_USED), \
1686 SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO, \
1687 show_alarm_beep, NULL, ALARM_STATUS, index + 17), \
1688 SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO, \
1689 show_alarm_beep, store_beep, BEEP_ENABLE, index + 17) }
1690
1691/*
1692 * Don't change the attribute order, _beep is accessed by index
1693 * somewhere else in the code
1694 */
1695#define SENSOR_ATTR_TEMP(index) { \
1696 SENSOR_ATTR_2(temp##index##_type, S_IRUGO | (index < 4 ? S_IWUSR : 0), \
1697 show_temp_mode, store_temp_mode, NOT_USED, index - 1), \
1698 SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_temp, \
1699 NULL, TEMP_READ, index - 1), \
1700 SENSOR_ATTR_2(temp##index##_crit, S_IRUGO | S_IWUSR, show_temp, \
1701 store_temp, TEMP_CRIT, index - 1), \
1702 SENSOR_ATTR_2(temp##index##_crit_hyst, S_IRUGO | S_IWUSR, \
1703 show_temp, store_temp, TEMP_CRIT_HYST, index - 1), \
1704 SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_temp, \
1705 store_temp, TEMP_WARN, index - 1), \
1706 SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR, \
1707 show_temp, store_temp, TEMP_WARN_HYST, index - 1), \
1708 SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO, \
1709 show_alarm_beep, NULL, ALARM_STATUS, \
1710 index + (index > 4 ? 11 : 17)), \
1711 SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO, \
1712 show_alarm_beep, store_beep, BEEP_ENABLE, \
1713 index + (index > 4 ? 11 : 17)), \
1714 SENSOR_ATTR_2(temp##index##_pwm_enable, S_IWUSR | S_IRUGO, \
1715 show_temp_pwm_enable, store_temp_pwm_enable, \
1716 TEMP_PWM_ENABLE, index - 1), \
1717 SENSOR_ATTR_2(temp##index##_auto_channels_pwm, S_IWUSR | S_IRUGO, \
1718 show_temp_pwm_enable, store_temp_pwm_enable, \
1719 TEMP_PWM_FAN_MAP, index - 1), \
1720 SENSOR_ATTR_2(thermal_cruise##index, S_IWUSR | S_IRUGO, \
1721 show_temp_pwm, store_temp_pwm, TEMP_PWM_TTTI, index - 1), \
1722 SENSOR_ATTR_2(temp##index##_warn, S_IWUSR | S_IRUGO, \
1723 show_temp_pwm, store_temp_pwm, TEMP_PWM_CTFS, index - 1), \
1724 SENSOR_ATTR_2(temp##index##_warn_hyst, S_IWUSR | S_IRUGO, \
1725 show_temp_pwm, store_temp_pwm, TEMP_PWM_HCT, index - 1), \
1726 SENSOR_ATTR_2(temp##index##_operation_hyst, S_IWUSR | S_IRUGO, \
1727 show_temp_pwm, store_temp_pwm, TEMP_PWM_HOT, index - 1), \
1728 SENSOR_ATTR_2(temp##index##_auto_point1_pwm, S_IRUGO | S_IWUSR, \
1729 show_sf4_pwm, store_sf4_pwm, 0, index - 1), \
1730 SENSOR_ATTR_2(temp##index##_auto_point2_pwm, S_IRUGO | S_IWUSR, \
1731 show_sf4_pwm, store_sf4_pwm, 1, index - 1), \
1732 SENSOR_ATTR_2(temp##index##_auto_point3_pwm, S_IRUGO | S_IWUSR, \
1733 show_sf4_pwm, store_sf4_pwm, 2, index - 1), \
1734 SENSOR_ATTR_2(temp##index##_auto_point4_pwm, S_IRUGO | S_IWUSR, \
1735 show_sf4_pwm, store_sf4_pwm, 3, index - 1), \
1736 SENSOR_ATTR_2(temp##index##_auto_point5_pwm, S_IRUGO | S_IWUSR, \
1737 show_sf4_pwm, store_sf4_pwm, 4, index - 1), \
1738 SENSOR_ATTR_2(temp##index##_auto_point6_pwm, S_IRUGO | S_IWUSR, \
1739 show_sf4_pwm, store_sf4_pwm, 5, index - 1), \
1740 SENSOR_ATTR_2(temp##index##_auto_point7_pwm, S_IRUGO | S_IWUSR, \
1741 show_sf4_pwm, store_sf4_pwm, 6, index - 1), \
1742 SENSOR_ATTR_2(temp##index##_auto_point1_temp, S_IRUGO | S_IWUSR,\
1743 show_sf4_temp, store_sf4_temp, 0, index - 1), \
1744 SENSOR_ATTR_2(temp##index##_auto_point2_temp, S_IRUGO | S_IWUSR,\
1745 show_sf4_temp, store_sf4_temp, 1, index - 1), \
1746 SENSOR_ATTR_2(temp##index##_auto_point3_temp, S_IRUGO | S_IWUSR,\
1747 show_sf4_temp, store_sf4_temp, 2, index - 1), \
1748 SENSOR_ATTR_2(temp##index##_auto_point4_temp, S_IRUGO | S_IWUSR,\
1749 show_sf4_temp, store_sf4_temp, 3, index - 1), \
1750 SENSOR_ATTR_2(temp##index##_auto_point5_temp, S_IRUGO | S_IWUSR,\
1751 show_sf4_temp, store_sf4_temp, 4, index - 1), \
1752 SENSOR_ATTR_2(temp##index##_auto_point6_temp, S_IRUGO | S_IWUSR,\
1753 show_sf4_temp, store_sf4_temp, 5, index - 1), \
1754 SENSOR_ATTR_2(temp##index##_auto_point7_temp, S_IRUGO | S_IWUSR,\
1755 show_sf4_temp, store_sf4_temp, 6, index - 1) }
1756
1757
1758static struct sensor_device_attribute_2 w83795_in[][5] = {
1759 SENSOR_ATTR_IN(0),
1760 SENSOR_ATTR_IN(1),
1761 SENSOR_ATTR_IN(2),
1762 SENSOR_ATTR_IN(3),
1763 SENSOR_ATTR_IN(4),
1764 SENSOR_ATTR_IN(5),
1765 SENSOR_ATTR_IN(6),
1766 SENSOR_ATTR_IN(7),
1767 SENSOR_ATTR_IN(8),
1768 SENSOR_ATTR_IN(9),
1769 SENSOR_ATTR_IN(10),
1770 SENSOR_ATTR_IN(11),
1771 SENSOR_ATTR_IN(12),
1772 SENSOR_ATTR_IN(13),
1773 SENSOR_ATTR_IN(14),
1774 SENSOR_ATTR_IN(15),
1775 SENSOR_ATTR_IN(16),
1776 SENSOR_ATTR_IN(17),
1777 SENSOR_ATTR_IN(18),
1778 SENSOR_ATTR_IN(19),
1779 SENSOR_ATTR_IN(20),
1780};
1781
1782static const struct sensor_device_attribute_2 w83795_fan[][4] = {
1783 SENSOR_ATTR_FAN(1),
1784 SENSOR_ATTR_FAN(2),
1785 SENSOR_ATTR_FAN(3),
1786 SENSOR_ATTR_FAN(4),
1787 SENSOR_ATTR_FAN(5),
1788 SENSOR_ATTR_FAN(6),
1789 SENSOR_ATTR_FAN(7),
1790 SENSOR_ATTR_FAN(8),
1791 SENSOR_ATTR_FAN(9),
1792 SENSOR_ATTR_FAN(10),
1793 SENSOR_ATTR_FAN(11),
1794 SENSOR_ATTR_FAN(12),
1795 SENSOR_ATTR_FAN(13),
1796 SENSOR_ATTR_FAN(14),
1797};
1798
1799static const struct sensor_device_attribute_2 w83795_temp[][28] = {
1800 SENSOR_ATTR_TEMP(1),
1801 SENSOR_ATTR_TEMP(2),
1802 SENSOR_ATTR_TEMP(3),
1803 SENSOR_ATTR_TEMP(4),
1804 SENSOR_ATTR_TEMP(5),
1805 SENSOR_ATTR_TEMP(6),
1806};
1807
1808static const struct sensor_device_attribute_2 w83795_dts[][8] = {
1809 SENSOR_ATTR_DTS(7),
1810 SENSOR_ATTR_DTS(8),
1811 SENSOR_ATTR_DTS(9),
1812 SENSOR_ATTR_DTS(10),
1813 SENSOR_ATTR_DTS(11),
1814 SENSOR_ATTR_DTS(12),
1815 SENSOR_ATTR_DTS(13),
1816 SENSOR_ATTR_DTS(14),
1817};
1818
1819static const struct sensor_device_attribute_2 w83795_pwm[][8] = {
1820 SENSOR_ATTR_PWM(1),
1821 SENSOR_ATTR_PWM(2),
1822 SENSOR_ATTR_PWM(3),
1823 SENSOR_ATTR_PWM(4),
1824 SENSOR_ATTR_PWM(5),
1825 SENSOR_ATTR_PWM(6),
1826 SENSOR_ATTR_PWM(7),
1827 SENSOR_ATTR_PWM(8),
1828};
1829
1830static const struct sensor_device_attribute_2 w83795_tss[6] = {
1831 SENSOR_ATTR_2(temp1_source_sel, S_IWUSR | S_IRUGO,
1832 show_temp_src, store_temp_src, NOT_USED, 0),
1833 SENSOR_ATTR_2(temp2_source_sel, S_IWUSR | S_IRUGO,
1834 show_temp_src, store_temp_src, NOT_USED, 1),
1835 SENSOR_ATTR_2(temp3_source_sel, S_IWUSR | S_IRUGO,
1836 show_temp_src, store_temp_src, NOT_USED, 2),
1837 SENSOR_ATTR_2(temp4_source_sel, S_IWUSR | S_IRUGO,
1838 show_temp_src, store_temp_src, NOT_USED, 3),
1839 SENSOR_ATTR_2(temp5_source_sel, S_IWUSR | S_IRUGO,
1840 show_temp_src, store_temp_src, NOT_USED, 4),
1841 SENSOR_ATTR_2(temp6_source_sel, S_IWUSR | S_IRUGO,
1842 show_temp_src, store_temp_src, NOT_USED, 5),
1843};
1844
1845static const struct sensor_device_attribute_2 sda_single_files[] = {
1846 SENSOR_ATTR_2(intrusion0_alarm, S_IWUSR | S_IRUGO, show_alarm_beep,
1847 store_chassis_clear, ALARM_STATUS, 46),
1848#ifdef CONFIG_SENSORS_W83795_FANCTRL
1849 SENSOR_ATTR_2(speed_cruise_tolerance, S_IWUSR | S_IRUGO, show_fanin,
1850 store_fanin, FANIN_TOL, NOT_USED),
1851 SENSOR_ATTR_2(pwm_default, S_IWUSR | S_IRUGO, show_sf_setup,
1852 store_sf_setup, SETUP_PWM_DEFAULT, NOT_USED),
1853 SENSOR_ATTR_2(pwm_uptime, S_IWUSR | S_IRUGO, show_sf_setup,
1854 store_sf_setup, SETUP_PWM_UPTIME, NOT_USED),
1855 SENSOR_ATTR_2(pwm_downtime, S_IWUSR | S_IRUGO, show_sf_setup,
1856 store_sf_setup, SETUP_PWM_DOWNTIME, NOT_USED),
1857#endif
1858};
1859
1860static const struct sensor_device_attribute_2 sda_beep_files[] = {
1861 SENSOR_ATTR_2(intrusion0_beep, S_IWUSR | S_IRUGO, show_alarm_beep,
1862 store_beep, BEEP_ENABLE, 46),
1863 SENSOR_ATTR_2(beep_enable, S_IWUSR | S_IRUGO, show_alarm_beep,
1864 store_beep, BEEP_ENABLE, 47),
1865};
1866
1867/*
1868 * Driver interface
1869 */
1870
1871static void w83795_init_client(struct i2c_client *client)
1872{
1873 struct w83795_data *data = i2c_get_clientdata(client);
1874 static const u16 clkin[4] = { /* in kHz */
1875 14318, 24000, 33333, 48000
1876 };
1877 u8 config;
1878
1879 if (reset)
1880 w83795_write(client, W83795_REG_CONFIG, 0x80);
1881
1882 /* Start monitoring if needed */
1883 config = w83795_read(client, W83795_REG_CONFIG);
1884 if (!(config & W83795_REG_CONFIG_START)) {
1885 dev_info(&client->dev, "Enabling monitoring operations\n");
1886 w83795_write(client, W83795_REG_CONFIG,
1887 config | W83795_REG_CONFIG_START);
1888 }
1889
1890 data->clkin = clkin[(config >> 3) & 0x3];
1891 dev_dbg(&client->dev, "clkin = %u kHz\n", data->clkin);
1892}
1893
1894static int w83795_get_device_id(struct i2c_client *client)
1895{
1896 int device_id;
1897
1898 device_id = i2c_smbus_read_byte_data(client, W83795_REG_DEVICEID);
1899
1900 /*
1901 * Special case for rev. A chips; can't be checked first because later
1902 * revisions emulate this for compatibility
1903 */
1904 if (device_id < 0 || (device_id & 0xf0) != 0x50) {
1905 int alt_id;
1906
1907 alt_id = i2c_smbus_read_byte_data(client,
1908 W83795_REG_DEVICEID_A);
1909 if (alt_id == 0x50)
1910 device_id = alt_id;
1911 }
1912
1913 return device_id;
1914}
1915
1916/* Return 0 if detection is successful, -ENODEV otherwise */
1917static int w83795_detect(struct i2c_client *client,
1918 struct i2c_board_info *info)
1919{
1920 int bank, vendor_id, device_id, expected, i2c_addr, config;
1921 struct i2c_adapter *adapter = client->adapter;
1922 unsigned short address = client->addr;
1923 const char *chip_name;
1924
1925 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1926 return -ENODEV;
1927 bank = i2c_smbus_read_byte_data(client, W83795_REG_BANKSEL);
1928 if (bank < 0 || (bank & 0x7c)) {
1929 dev_dbg(&adapter->dev,
1930 "w83795: Detection failed at addr 0x%02hx, check %s\n",
1931 address, "bank");
1932 return -ENODEV;
1933 }
1934
1935 /* Check Nuvoton vendor ID */
1936 vendor_id = i2c_smbus_read_byte_data(client, W83795_REG_VENDORID);
1937 expected = bank & 0x80 ? 0x5c : 0xa3;
1938 if (vendor_id != expected) {
1939 dev_dbg(&adapter->dev,
1940 "w83795: Detection failed at addr 0x%02hx, check %s\n",
1941 address, "vendor id");
1942 return -ENODEV;
1943 }
1944
1945 /* Check device ID */
1946 device_id = w83795_get_device_id(client) |
1947 (i2c_smbus_read_byte_data(client, W83795_REG_CHIPID) << 8);
1948 if ((device_id >> 4) != 0x795) {
1949 dev_dbg(&adapter->dev,
1950 "w83795: Detection failed at addr 0x%02hx, check %s\n",
1951 address, "device id\n");
1952 return -ENODEV;
1953 }
1954
1955 /*
1956 * If Nuvoton chip, address of chip and W83795_REG_I2C_ADDR
1957 * should match
1958 */
1959 if ((bank & 0x07) == 0) {
1960 i2c_addr = i2c_smbus_read_byte_data(client,
1961 W83795_REG_I2C_ADDR);
1962 if ((i2c_addr & 0x7f) != address) {
1963 dev_dbg(&adapter->dev,
1964 "w83795: Detection failed at addr 0x%02hx, "
1965 "check %s\n", address, "i2c addr");
1966 return -ENODEV;
1967 }
1968 }
1969
1970 /*
1971 * Check 795 chip type: 795G or 795ADG
1972 * Usually we don't write to chips during detection, but here we don't
1973 * quite have the choice; hopefully it's OK, we are about to return
1974 * success anyway
1975 */
1976 if ((bank & 0x07) != 0)
1977 i2c_smbus_write_byte_data(client, W83795_REG_BANKSEL,
1978 bank & ~0x07);
1979 config = i2c_smbus_read_byte_data(client, W83795_REG_CONFIG);
1980 if (config & W83795_REG_CONFIG_CONFIG48)
1981 chip_name = "w83795adg";
1982 else
1983 chip_name = "w83795g";
1984
1985 strlcpy(info->type, chip_name, I2C_NAME_SIZE);
1986 dev_info(&adapter->dev, "Found %s rev. %c at 0x%02hx\n", chip_name,
1987 'A' + (device_id & 0xf), address);
1988
1989 return 0;
1990}
1991
1992#ifdef CONFIG_SENSORS_W83795_FANCTRL
1993#define NUM_PWM_ATTRIBUTES ARRAY_SIZE(w83795_pwm[0])
1994#define NUM_TEMP_ATTRIBUTES ARRAY_SIZE(w83795_temp[0])
1995#else
1996#define NUM_PWM_ATTRIBUTES 4
1997#define NUM_TEMP_ATTRIBUTES 8
1998#endif
1999
2000static int w83795_handle_files(struct device *dev, int (*fn)(struct device *,
2001 const struct device_attribute *))
2002{
2003 struct w83795_data *data = dev_get_drvdata(dev);
2004 int err, i, j;
2005
2006 for (i = 0; i < ARRAY_SIZE(w83795_in); i++) {
2007 if (!(data->has_in & (1 << i)))
2008 continue;
2009 for (j = 0; j < ARRAY_SIZE(w83795_in[0]); j++) {
2010 if (j == 4 && !data->enable_beep)
2011 continue;
2012 err = fn(dev, &w83795_in[i][j].dev_attr);
2013 if (err)
2014 return err;
2015 }
2016 }
2017
2018 for (i = 0; i < ARRAY_SIZE(w83795_fan); i++) {
2019 if (!(data->has_fan & (1 << i)))
2020 continue;
2021 for (j = 0; j < ARRAY_SIZE(w83795_fan[0]); j++) {
2022 if (j == 3 && !data->enable_beep)
2023 continue;
2024 err = fn(dev, &w83795_fan[i][j].dev_attr);
2025 if (err)
2026 return err;
2027 }
2028 }
2029
2030 for (i = 0; i < ARRAY_SIZE(w83795_tss); i++) {
2031 j = w83795_tss_useful(data, i);
2032 if (!j)
2033 continue;
2034 err = fn(dev, &w83795_tss[i].dev_attr);
2035 if (err)
2036 return err;
2037 }
2038
2039 for (i = 0; i < ARRAY_SIZE(sda_single_files); i++) {
2040 err = fn(dev, &sda_single_files[i].dev_attr);
2041 if (err)
2042 return err;
2043 }
2044
2045 if (data->enable_beep) {
2046 for (i = 0; i < ARRAY_SIZE(sda_beep_files); i++) {
2047 err = fn(dev, &sda_beep_files[i].dev_attr);
2048 if (err)
2049 return err;
2050 }
2051 }
2052
2053 for (i = 0; i < data->has_pwm; i++) {
2054 for (j = 0; j < NUM_PWM_ATTRIBUTES; j++) {
2055 err = fn(dev, &w83795_pwm[i][j].dev_attr);
2056 if (err)
2057 return err;
2058 }
2059 }
2060
2061 for (i = 0; i < ARRAY_SIZE(w83795_temp); i++) {
2062 if (!(data->has_temp & (1 << i)))
2063 continue;
2064 for (j = 0; j < NUM_TEMP_ATTRIBUTES; j++) {
2065 if (j == 7 && !data->enable_beep)
2066 continue;
2067 err = fn(dev, &w83795_temp[i][j].dev_attr);
2068 if (err)
2069 return err;
2070 }
2071 }
2072
2073 if (data->enable_dts) {
2074 for (i = 0; i < ARRAY_SIZE(w83795_dts); i++) {
2075 if (!(data->has_dts & (1 << i)))
2076 continue;
2077 for (j = 0; j < ARRAY_SIZE(w83795_dts[0]); j++) {
2078 if (j == 7 && !data->enable_beep)
2079 continue;
2080 err = fn(dev, &w83795_dts[i][j].dev_attr);
2081 if (err)
2082 return err;
2083 }
2084 }
2085 }
2086
2087 return 0;
2088}
2089
2090/* We need a wrapper that fits in w83795_handle_files */
2091static int device_remove_file_wrapper(struct device *dev,
2092 const struct device_attribute *attr)
2093{
2094 device_remove_file(dev, attr);
2095 return 0;
2096}
2097
2098static void w83795_check_dynamic_in_limits(struct i2c_client *client)
2099{
2100 struct w83795_data *data = i2c_get_clientdata(client);
2101 u8 vid_ctl;
2102 int i, err_max, err_min;
2103
2104 vid_ctl = w83795_read(client, W83795_REG_VID_CTRL);
2105
2106 /* Return immediately if VRM isn't configured */
2107 if ((vid_ctl & 0x07) == 0x00 || (vid_ctl & 0x07) == 0x07)
2108 return;
2109
2110 data->has_dyn_in = (vid_ctl >> 3) & 0x07;
2111 for (i = 0; i < 2; i++) {
2112 if (!(data->has_dyn_in & (1 << i)))
2113 continue;
2114
2115 /* Voltage limits in dynamic mode, switch to read-only */
2116 err_max = sysfs_chmod_file(&client->dev.kobj,
2117 &w83795_in[i][2].dev_attr.attr,
2118 S_IRUGO);
2119 err_min = sysfs_chmod_file(&client->dev.kobj,
2120 &w83795_in[i][3].dev_attr.attr,
2121 S_IRUGO);
2122 if (err_max || err_min)
2123 dev_warn(&client->dev, "Failed to set in%d limits "
2124 "read-only (%d, %d)\n", i, err_max, err_min);
2125 else
2126 dev_info(&client->dev, "in%d limits set dynamically "
2127 "from VID\n", i);
2128 }
2129}
2130
2131/* Check pins that can be used for either temperature or voltage monitoring */
2132static void w83795_apply_temp_config(struct w83795_data *data, u8 config,
2133 int temp_chan, int in_chan)
2134{
2135 /* config is a 2-bit value */
2136 switch (config) {
2137 case 0x2: /* Voltage monitoring */
2138 data->has_in |= 1 << in_chan;
2139 break;
2140 case 0x1: /* Thermal diode */
2141 if (temp_chan >= 4)
2142 break;
2143 data->temp_mode |= 1 << temp_chan;
2144 /* fall through */
2145 case 0x3: /* Thermistor */
2146 data->has_temp |= 1 << temp_chan;
2147 break;
2148 }
2149}
2150
2151static int w83795_probe(struct i2c_client *client,
2152 const struct i2c_device_id *id)
2153{
2154 int i;
2155 u8 tmp;
2156 struct device *dev = &client->dev;
2157 struct w83795_data *data;
2158 int err;
2159
2160 data = kzalloc(sizeof(struct w83795_data), GFP_KERNEL);
2161 if (!data) {
2162 err = -ENOMEM;
2163 goto exit;
2164 }
2165
2166 i2c_set_clientdata(client, data);
2167 data->chip_type = id->driver_data;
2168 data->bank = i2c_smbus_read_byte_data(client, W83795_REG_BANKSEL);
2169 mutex_init(&data->update_lock);
2170
2171 /* Initialize the chip */
2172 w83795_init_client(client);
2173
2174 /* Check which voltages and fans are present */
2175 data->has_in = w83795_read(client, W83795_REG_VOLT_CTRL1)
2176 | (w83795_read(client, W83795_REG_VOLT_CTRL2) << 8);
2177 data->has_fan = w83795_read(client, W83795_REG_FANIN_CTRL1)
2178 | (w83795_read(client, W83795_REG_FANIN_CTRL2) << 8);
2179
2180 /* Check which analog temperatures and extra voltages are present */
2181 tmp = w83795_read(client, W83795_REG_TEMP_CTRL1);
2182 if (tmp & 0x20)
2183 data->enable_dts = 1;
2184 w83795_apply_temp_config(data, (tmp >> 2) & 0x3, 5, 16);
2185 w83795_apply_temp_config(data, tmp & 0x3, 4, 15);
2186 tmp = w83795_read(client, W83795_REG_TEMP_CTRL2);
2187 w83795_apply_temp_config(data, tmp >> 6, 3, 20);
2188 w83795_apply_temp_config(data, (tmp >> 4) & 0x3, 2, 19);
2189 w83795_apply_temp_config(data, (tmp >> 2) & 0x3, 1, 18);
2190 w83795_apply_temp_config(data, tmp & 0x3, 0, 17);
2191
2192 /* Check DTS enable status */
2193 if (data->enable_dts) {
2194 if (1 & w83795_read(client, W83795_REG_DTSC))
2195 data->enable_dts |= 2;
2196 data->has_dts = w83795_read(client, W83795_REG_DTSE);
2197 }
2198
2199 /* Report PECI Tbase values */
2200 if (data->enable_dts == 1) {
2201 for (i = 0; i < 8; i++) {
2202 if (!(data->has_dts & (1 << i)))
2203 continue;
2204 tmp = w83795_read(client, W83795_REG_PECI_TBASE(i));
2205 dev_info(&client->dev,
2206 "PECI agent %d Tbase temperature: %u\n",
2207 i + 1, (unsigned int)tmp & 0x7f);
2208 }
2209 }
2210
2211 data->has_gain = w83795_read(client, W83795_REG_VMIGB_CTRL) & 0x0f;
2212
2213 /* pwm and smart fan */
2214 if (data->chip_type == w83795g)
2215 data->has_pwm = 8;
2216 else
2217 data->has_pwm = 2;
2218
2219 /* Check if BEEP pin is available */
2220 if (data->chip_type == w83795g) {
2221 /* The W83795G has a dedicated BEEP pin */
2222 data->enable_beep = 1;
2223 } else {
2224 /*
2225 * The W83795ADG has a shared pin for OVT# and BEEP, so you
2226 * can't have both
2227 */
2228 tmp = w83795_read(client, W83795_REG_OVT_CFG);
2229 if ((tmp & OVT_CFG_SEL) == 0)
2230 data->enable_beep = 1;
2231 }
2232
2233 err = w83795_handle_files(dev, device_create_file);
2234 if (err)
2235 goto exit_remove;
2236
2237 if (data->chip_type == w83795g)
2238 w83795_check_dynamic_in_limits(client);
2239
2240 data->hwmon_dev = hwmon_device_register(dev);
2241 if (IS_ERR(data->hwmon_dev)) {
2242 err = PTR_ERR(data->hwmon_dev);
2243 goto exit_remove;
2244 }
2245
2246 return 0;
2247
2248exit_remove:
2249 w83795_handle_files(dev, device_remove_file_wrapper);
2250 kfree(data);
2251exit:
2252 return err;
2253}
2254
2255static int w83795_remove(struct i2c_client *client)
2256{
2257 struct w83795_data *data = i2c_get_clientdata(client);
2258
2259 hwmon_device_unregister(data->hwmon_dev);
2260 w83795_handle_files(&client->dev, device_remove_file_wrapper);
2261 kfree(data);
2262
2263 return 0;
2264}
2265
2266
2267static const struct i2c_device_id w83795_id[] = {
2268 { "w83795g", w83795g },
2269 { "w83795adg", w83795adg },
2270 { }
2271};
2272MODULE_DEVICE_TABLE(i2c, w83795_id);
2273
2274static struct i2c_driver w83795_driver = {
2275 .driver = {
2276 .name = "w83795",
2277 },
2278 .probe = w83795_probe,
2279 .remove = w83795_remove,
2280 .id_table = w83795_id,
2281
2282 .class = I2C_CLASS_HWMON,
2283 .detect = w83795_detect,
2284 .address_list = normal_i2c,
2285};
2286
2287module_i2c_driver(w83795_driver);
2288
2289MODULE_AUTHOR("Wei Song, Jean Delvare <khali@linux-fr.org>");
2290MODULE_DESCRIPTION("W83795G/ADG hardware monitoring driver");
2291MODULE_LICENSE("GPL");