1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * w83795.c - Linux kernel driver for hardware monitoring
4 * Copyright (C) 2008 Nuvoton Technology Corp.
5 * Wei Song
6 * Copyright (C) 2010 Jean Delvare <jdelvare@suse.de>
7 *
8 * Supports following chips:
9 *
10 * Chip #vin #fanin #pwm #temp #dts wchipid vendid i2c ISA
11 * w83795g 21 14 8 6 8 0x79 0x5ca3 yes no
12 * w83795adg 18 14 2 6 8 0x79 0x5ca3 yes no
13 */
14
15 #include <linux/kernel.h>
16 #include <linux/module.h>
17 #include <linux/init.h>
18 #include <linux/slab.h>
19 #include <linux/i2c.h>
20 #include <linux/hwmon.h>
21 #include <linux/hwmon-sysfs.h>
22 #include <linux/err.h>
23 #include <linux/mutex.h>
24 #include <linux/jiffies.h>
25 #include <linux/util_macros.h>
26
27 /* Addresses to scan */
28 static const unsigned short normal_i2c[] = {
29 0x2c, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END
30 };
31
32
33 static bool reset;
34 module_param(reset, bool, 0);
35 MODULE_PARM_DESC(reset, "Set to 1 to reset chip, not recommended");
36
37
38 #define W83795_REG_BANKSEL 0x00
39 #define W83795_REG_VENDORID 0xfd
40 #define W83795_REG_CHIPID 0xfe
41 #define W83795_REG_DEVICEID 0xfb
42 #define W83795_REG_DEVICEID_A 0xff
43
44 #define W83795_REG_I2C_ADDR 0xfc
45 #define W83795_REG_CONFIG 0x01
46 #define W83795_REG_CONFIG_CONFIG48 0x04
47 #define W83795_REG_CONFIG_START 0x01
48
49 /* Multi-Function Pin Ctrl Registers */
50 #define W83795_REG_VOLT_CTRL1 0x02
51 #define W83795_REG_VOLT_CTRL2 0x03
52 #define W83795_REG_TEMP_CTRL1 0x04
53 #define W83795_REG_TEMP_CTRL2 0x05
54 #define W83795_REG_FANIN_CTRL1 0x06
55 #define W83795_REG_FANIN_CTRL2 0x07
56 #define W83795_REG_VMIGB_CTRL 0x08
57
58 #define TEMP_READ 0
59 #define TEMP_CRIT 1
60 #define TEMP_CRIT_HYST 2
61 #define TEMP_WARN 3
62 #define TEMP_WARN_HYST 4
63 /*
64 * only crit and crit_hyst affect real-time alarm status
65 * current crit crit_hyst warn warn_hyst
66 */
67 static const u16 W83795_REG_TEMP[][5] = {
68 {0x21, 0x96, 0x97, 0x98, 0x99}, /* TD1/TR1 */
69 {0x22, 0x9a, 0x9b, 0x9c, 0x9d}, /* TD2/TR2 */
70 {0x23, 0x9e, 0x9f, 0xa0, 0xa1}, /* TD3/TR3 */
71 {0x24, 0xa2, 0xa3, 0xa4, 0xa5}, /* TD4/TR4 */
72 {0x1f, 0xa6, 0xa7, 0xa8, 0xa9}, /* TR5 */
73 {0x20, 0xaa, 0xab, 0xac, 0xad}, /* TR6 */
74 };
75
76 #define IN_READ 0
77 #define IN_MAX 1
78 #define IN_LOW 2
79 static const u16 W83795_REG_IN[][3] = {
80 /* Current, HL, LL */
81 {0x10, 0x70, 0x71}, /* VSEN1 */
82 {0x11, 0x72, 0x73}, /* VSEN2 */
83 {0x12, 0x74, 0x75}, /* VSEN3 */
84 {0x13, 0x76, 0x77}, /* VSEN4 */
85 {0x14, 0x78, 0x79}, /* VSEN5 */
86 {0x15, 0x7a, 0x7b}, /* VSEN6 */
87 {0x16, 0x7c, 0x7d}, /* VSEN7 */
88 {0x17, 0x7e, 0x7f}, /* VSEN8 */
89 {0x18, 0x80, 0x81}, /* VSEN9 */
90 {0x19, 0x82, 0x83}, /* VSEN10 */
91 {0x1A, 0x84, 0x85}, /* VSEN11 */
92 {0x1B, 0x86, 0x87}, /* VTT */
93 {0x1C, 0x88, 0x89}, /* 3VDD */
94 {0x1D, 0x8a, 0x8b}, /* 3VSB */
95 {0x1E, 0x8c, 0x8d}, /* VBAT */
96 {0x1F, 0xa6, 0xa7}, /* VSEN12 */
97 {0x20, 0xaa, 0xab}, /* VSEN13 */
98 {0x21, 0x96, 0x97}, /* VSEN14 */
99 {0x22, 0x9a, 0x9b}, /* VSEN15 */
100 {0x23, 0x9e, 0x9f}, /* VSEN16 */
101 {0x24, 0xa2, 0xa3}, /* VSEN17 */
102 };
103 #define W83795_REG_VRLSB 0x3C
104
105 static const u8 W83795_REG_IN_HL_LSB[] = {
106 0x8e, /* VSEN1-4 */
107 0x90, /* VSEN5-8 */
108 0x92, /* VSEN9-11 */
109 0x94, /* VTT, 3VDD, 3VSB, 3VBAT */
110 0xa8, /* VSEN12 */
111 0xac, /* VSEN13 */
112 0x98, /* VSEN14 */
113 0x9c, /* VSEN15 */
114 0xa0, /* VSEN16 */
115 0xa4, /* VSEN17 */
116 };
117
118 #define IN_LSB_REG(index, type) \
119 (((type) == 1) ? W83795_REG_IN_HL_LSB[(index)] \
120 : (W83795_REG_IN_HL_LSB[(index)] + 1))
121
122 #define IN_LSB_SHIFT 0
123 #define IN_LSB_IDX 1
124 static const u8 IN_LSB_SHIFT_IDX[][2] = {
125 /* High/Low LSB shift, LSB No. */
126 {0x00, 0x00}, /* VSEN1 */
127 {0x02, 0x00}, /* VSEN2 */
128 {0x04, 0x00}, /* VSEN3 */
129 {0x06, 0x00}, /* VSEN4 */
130 {0x00, 0x01}, /* VSEN5 */
131 {0x02, 0x01}, /* VSEN6 */
132 {0x04, 0x01}, /* VSEN7 */
133 {0x06, 0x01}, /* VSEN8 */
134 {0x00, 0x02}, /* VSEN9 */
135 {0x02, 0x02}, /* VSEN10 */
136 {0x04, 0x02}, /* VSEN11 */
137 {0x00, 0x03}, /* VTT */
138 {0x02, 0x03}, /* 3VDD */
139 {0x04, 0x03}, /* 3VSB */
140 {0x06, 0x03}, /* VBAT */
141 {0x06, 0x04}, /* VSEN12 */
142 {0x06, 0x05}, /* VSEN13 */
143 {0x06, 0x06}, /* VSEN14 */
144 {0x06, 0x07}, /* VSEN15 */
145 {0x06, 0x08}, /* VSEN16 */
146 {0x06, 0x09}, /* VSEN17 */
147 };
148
149
150 #define W83795_REG_FAN(index) (0x2E + (index))
151 #define W83795_REG_FAN_MIN_HL(index) (0xB6 + (index))
152 #define W83795_REG_FAN_MIN_LSB(index) (0xC4 + (index) / 2)
153 #define W83795_REG_FAN_MIN_LSB_SHIFT(index) \
154 (((index) & 1) ? 4 : 0)
155
156 #define W83795_REG_VID_CTRL 0x6A
157
158 #define W83795_REG_ALARM_CTRL 0x40
159 #define ALARM_CTRL_RTSACS (1 << 7)
160 #define W83795_REG_ALARM(index) (0x41 + (index))
161 #define W83795_REG_CLR_CHASSIS 0x4D
162 #define W83795_REG_BEEP(index) (0x50 + (index))
163
164 #define W83795_REG_OVT_CFG 0x58
165 #define OVT_CFG_SEL (1 << 7)
166
167
168 #define W83795_REG_FCMS1 0x201
169 #define W83795_REG_FCMS2 0x208
170 #define W83795_REG_TFMR(index) (0x202 + (index))
171 #define W83795_REG_FOMC 0x20F
172
173 #define W83795_REG_TSS(index) (0x209 + (index))
174
175 #define TSS_MAP_RESERVED 0xff
176 static const u8 tss_map[4][6] = {
177 { 0, 1, 2, 3, 4, 5},
178 { 6, 7, 8, 9, 0, 1},
179 {10, 11, 12, 13, 2, 3},
180 { 4, 5, 4, 5, TSS_MAP_RESERVED, TSS_MAP_RESERVED},
181 };
182
183 #define PWM_OUTPUT 0
184 #define PWM_FREQ 1
185 #define PWM_START 2
186 #define PWM_NONSTOP 3
187 #define PWM_STOP_TIME 4
188 #define W83795_REG_PWM(index, nr) (0x210 + (nr) * 8 + (index))
189
190 #define W83795_REG_FTSH(index) (0x240 + (index) * 2)
191 #define W83795_REG_FTSL(index) (0x241 + (index) * 2)
192 #define W83795_REG_TFTS 0x250
193
194 #define TEMP_PWM_TTTI 0
195 #define TEMP_PWM_CTFS 1
196 #define TEMP_PWM_HCT 2
197 #define TEMP_PWM_HOT 3
198 #define W83795_REG_TTTI(index) (0x260 + (index))
199 #define W83795_REG_CTFS(index) (0x268 + (index))
200 #define W83795_REG_HT(index) (0x270 + (index))
201
202 #define SF4_TEMP 0
203 #define SF4_PWM 1
204 #define W83795_REG_SF4_TEMP(temp_num, index) \
205 (0x280 + 0x10 * (temp_num) + (index))
206 #define W83795_REG_SF4_PWM(temp_num, index) \
207 (0x288 + 0x10 * (temp_num) + (index))
208
209 #define W83795_REG_DTSC 0x301
210 #define W83795_REG_DTSE 0x302
211 #define W83795_REG_DTS(index) (0x26 + (index))
212 #define W83795_REG_PECI_TBASE(index) (0x320 + (index))
213
214 #define DTS_CRIT 0
215 #define DTS_CRIT_HYST 1
216 #define DTS_WARN 2
217 #define DTS_WARN_HYST 3
218 #define W83795_REG_DTS_EXT(index) (0xB2 + (index))
219
220 #define SETUP_PWM_DEFAULT 0
221 #define SETUP_PWM_UPTIME 1
222 #define SETUP_PWM_DOWNTIME 2
223 #define W83795_REG_SETUP_PWM(index) (0x20C + (index))
224
in_from_reg(u8 index,u16 val)225 static inline u16 in_from_reg(u8 index, u16 val)
226 {
227 /* 3VDD, 3VSB and VBAT: 6 mV/bit; other inputs: 2 mV/bit */
228 if (index >= 12 && index <= 14)
229 return val * 6;
230 else
231 return val * 2;
232 }
233
in_to_reg(u8 index,u16 val)234 static inline u16 in_to_reg(u8 index, u16 val)
235 {
236 if (index >= 12 && index <= 14)
237 return val / 6;
238 else
239 return val / 2;
240 }
241
fan_from_reg(u16 val)242 static inline unsigned long fan_from_reg(u16 val)
243 {
244 if ((val == 0xfff) || (val == 0))
245 return 0;
246 return 1350000UL / val;
247 }
248
fan_to_reg(long rpm)249 static inline u16 fan_to_reg(long rpm)
250 {
251 if (rpm <= 0)
252 return 0x0fff;
253 return clamp_val((1350000 + (rpm >> 1)) / rpm, 1, 0xffe);
254 }
255
time_from_reg(u8 reg)256 static inline unsigned long time_from_reg(u8 reg)
257 {
258 return reg * 100;
259 }
260
time_to_reg(unsigned long val)261 static inline u8 time_to_reg(unsigned long val)
262 {
263 return clamp_val((val + 50) / 100, 0, 0xff);
264 }
265
temp_from_reg(s8 reg)266 static inline long temp_from_reg(s8 reg)
267 {
268 return reg * 1000;
269 }
270
temp_to_reg(long val,s8 min,s8 max)271 static inline s8 temp_to_reg(long val, s8 min, s8 max)
272 {
273 return clamp_val(val / 1000, min, max);
274 }
275
276 static const u16 pwm_freq_cksel0[16] = {
277 1024, 512, 341, 256, 205, 171, 146, 128,
278 85, 64, 32, 16, 8, 4, 2, 1
279 };
280
pwm_freq_from_reg(u8 reg,u16 clkin)281 static unsigned int pwm_freq_from_reg(u8 reg, u16 clkin)
282 {
283 unsigned long base_clock;
284
285 if (reg & 0x80) {
286 base_clock = clkin * 1000 / ((clkin == 48000) ? 384 : 256);
287 return base_clock / ((reg & 0x7f) + 1);
288 } else
289 return pwm_freq_cksel0[reg & 0x0f];
290 }
291
pwm_freq_to_reg(unsigned long val,u16 clkin)292 static u8 pwm_freq_to_reg(unsigned long val, u16 clkin)
293 {
294 unsigned long base_clock;
295 u8 reg0, reg1;
296 unsigned long best0, best1;
297
298 /* Best fit for cksel = 0 */
299 reg0 = find_closest_descending(val, pwm_freq_cksel0,
300 ARRAY_SIZE(pwm_freq_cksel0));
301 if (val < 375) /* cksel = 1 can't beat this */
302 return reg0;
303 best0 = pwm_freq_cksel0[reg0];
304
305 /* Best fit for cksel = 1 */
306 base_clock = clkin * 1000 / ((clkin == 48000) ? 384 : 256);
307 reg1 = clamp_val(DIV_ROUND_CLOSEST(base_clock, val), 1, 128);
308 best1 = base_clock / reg1;
309 reg1 = 0x80 | (reg1 - 1);
310
311 /* Choose the closest one */
312 if (abs(val - best0) > abs(val - best1))
313 return reg1;
314 else
315 return reg0;
316 }
317
318 enum chip_types {w83795g, w83795adg};
319
320 struct w83795_data {
321 struct device *hwmon_dev;
322 struct mutex update_lock;
323 unsigned long last_updated; /* In jiffies */
324 enum chip_types chip_type;
325
326 u8 bank;
327
328 u32 has_in; /* Enable monitor VIN or not */
329 u8 has_dyn_in; /* Only in2-0 can have this */
330 u16 in[21][3]; /* Register value, read/high/low */
331 u8 in_lsb[10][3]; /* LSB Register value, high/low */
332 u8 has_gain; /* has gain: in17-20 * 8 */
333
334 u16 has_fan; /* Enable fan14-1 or not */
335 u16 fan[14]; /* Register value combine */
336 u16 fan_min[14]; /* Register value combine */
337
338 u8 has_temp; /* Enable monitor temp6-1 or not */
339 s8 temp[6][5]; /* current, crit, crit_hyst, warn, warn_hyst */
340 u8 temp_read_vrlsb[6];
341 u8 temp_mode; /* Bit vector, 0 = TR, 1 = TD */
342 u8 temp_src[3]; /* Register value */
343
344 u8 enable_dts; /*
345 * Enable PECI and SB-TSI,
346 * bit 0: =1 enable, =0 disable,
347 * bit 1: =1 AMD SB-TSI, =0 Intel PECI
348 */
349 u8 has_dts; /* Enable monitor DTS temp */
350 s8 dts[8]; /* Register value */
351 u8 dts_read_vrlsb[8]; /* Register value */
352 s8 dts_ext[4]; /* Register value */
353
354 u8 has_pwm; /*
355 * 795g supports 8 pwm, 795adg only supports 2,
356 * no config register, only affected by chip
357 * type
358 */
359 u8 pwm[8][5]; /*
360 * Register value, output, freq, start,
361 * non stop, stop time
362 */
363 u16 clkin; /* CLKIN frequency in kHz */
364 u8 pwm_fcms[2]; /* Register value */
365 u8 pwm_tfmr[6]; /* Register value */
366 u8 pwm_fomc; /* Register value */
367
368 u16 target_speed[8]; /*
369 * Register value, target speed for speed
370 * cruise
371 */
372 u8 tol_speed; /* tolerance of target speed */
373 u8 pwm_temp[6][4]; /* TTTI, CTFS, HCT, HOT */
374 u8 sf4_reg[6][2][7]; /* 6 temp, temp/dcpwm, 7 registers */
375
376 u8 setup_pwm[3]; /* Register value */
377
378 u8 alarms[6]; /* Register value */
379 u8 enable_beep;
380 u8 beeps[6]; /* Register value */
381
382 bool valid;
383 char valid_limits;
384 char valid_pwm_config;
385 };
386
387 /*
388 * Hardware access
389 * We assume that nobdody can change the bank outside the driver.
390 */
391
392 /* Must be called with data->update_lock held, except during initialization */
w83795_set_bank(struct i2c_client * client,u8 bank)393 static int w83795_set_bank(struct i2c_client *client, u8 bank)
394 {
395 struct w83795_data *data = i2c_get_clientdata(client);
396 int err;
397
398 /* If the same bank is already set, nothing to do */
399 if ((data->bank & 0x07) == bank)
400 return 0;
401
402 /* Change to new bank, preserve all other bits */
403 bank |= data->bank & ~0x07;
404 err = i2c_smbus_write_byte_data(client, W83795_REG_BANKSEL, bank);
405 if (err < 0) {
406 dev_err(&client->dev,
407 "Failed to set bank to %d, err %d\n",
408 (int)bank, err);
409 return err;
410 }
411 data->bank = bank;
412
413 return 0;
414 }
415
416 /* Must be called with data->update_lock held, except during initialization */
w83795_read(struct i2c_client * client,u16 reg)417 static u8 w83795_read(struct i2c_client *client, u16 reg)
418 {
419 int err;
420
421 err = w83795_set_bank(client, reg >> 8);
422 if (err < 0)
423 return 0x00; /* Arbitrary */
424
425 err = i2c_smbus_read_byte_data(client, reg & 0xff);
426 if (err < 0) {
427 dev_err(&client->dev,
428 "Failed to read from register 0x%03x, err %d\n",
429 (int)reg, err);
430 return 0x00; /* Arbitrary */
431 }
432 return err;
433 }
434
435 /* Must be called with data->update_lock held, except during initialization */
w83795_write(struct i2c_client * client,u16 reg,u8 value)436 static int w83795_write(struct i2c_client *client, u16 reg, u8 value)
437 {
438 int err;
439
440 err = w83795_set_bank(client, reg >> 8);
441 if (err < 0)
442 return err;
443
444 err = i2c_smbus_write_byte_data(client, reg & 0xff, value);
445 if (err < 0)
446 dev_err(&client->dev,
447 "Failed to write to register 0x%03x, err %d\n",
448 (int)reg, err);
449 return err;
450 }
451
w83795_update_limits(struct i2c_client * client)452 static void w83795_update_limits(struct i2c_client *client)
453 {
454 struct w83795_data *data = i2c_get_clientdata(client);
455 int i, limit;
456 u8 lsb;
457
458 /* Read the voltage limits */
459 for (i = 0; i < ARRAY_SIZE(data->in); i++) {
460 if (!(data->has_in & (1 << i)))
461 continue;
462 data->in[i][IN_MAX] =
463 w83795_read(client, W83795_REG_IN[i][IN_MAX]);
464 data->in[i][IN_LOW] =
465 w83795_read(client, W83795_REG_IN[i][IN_LOW]);
466 }
467 for (i = 0; i < ARRAY_SIZE(data->in_lsb); i++) {
468 if ((i == 2 && data->chip_type == w83795adg) ||
469 (i >= 4 && !(data->has_in & (1 << (i + 11)))))
470 continue;
471 data->in_lsb[i][IN_MAX] =
472 w83795_read(client, IN_LSB_REG(i, IN_MAX));
473 data->in_lsb[i][IN_LOW] =
474 w83795_read(client, IN_LSB_REG(i, IN_LOW));
475 }
476
477 /* Read the fan limits */
478 lsb = 0; /* Silent false gcc warning */
479 for (i = 0; i < ARRAY_SIZE(data->fan); i++) {
480 /*
481 * Each register contains LSB for 2 fans, but we want to
482 * read it only once to save time
483 */
484 if ((i & 1) == 0 && (data->has_fan & (3 << i)))
485 lsb = w83795_read(client, W83795_REG_FAN_MIN_LSB(i));
486
487 if (!(data->has_fan & (1 << i)))
488 continue;
489 data->fan_min[i] =
490 w83795_read(client, W83795_REG_FAN_MIN_HL(i)) << 4;
491 data->fan_min[i] |=
492 (lsb >> W83795_REG_FAN_MIN_LSB_SHIFT(i)) & 0x0F;
493 }
494
495 /* Read the temperature limits */
496 for (i = 0; i < ARRAY_SIZE(data->temp); i++) {
497 if (!(data->has_temp & (1 << i)))
498 continue;
499 for (limit = TEMP_CRIT; limit <= TEMP_WARN_HYST; limit++)
500 data->temp[i][limit] =
501 w83795_read(client, W83795_REG_TEMP[i][limit]);
502 }
503
504 /* Read the DTS limits */
505 if (data->enable_dts) {
506 for (limit = DTS_CRIT; limit <= DTS_WARN_HYST; limit++)
507 data->dts_ext[limit] =
508 w83795_read(client, W83795_REG_DTS_EXT(limit));
509 }
510
511 /* Read beep settings */
512 if (data->enable_beep) {
513 for (i = 0; i < ARRAY_SIZE(data->beeps); i++)
514 data->beeps[i] =
515 w83795_read(client, W83795_REG_BEEP(i));
516 }
517
518 data->valid_limits = 1;
519 }
520
w83795_update_pwm_config(struct device * dev)521 static struct w83795_data *w83795_update_pwm_config(struct device *dev)
522 {
523 struct i2c_client *client = to_i2c_client(dev);
524 struct w83795_data *data = i2c_get_clientdata(client);
525 int i, tmp;
526
527 mutex_lock(&data->update_lock);
528
529 if (data->valid_pwm_config)
530 goto END;
531
532 /* Read temperature source selection */
533 for (i = 0; i < ARRAY_SIZE(data->temp_src); i++)
534 data->temp_src[i] = w83795_read(client, W83795_REG_TSS(i));
535
536 /* Read automatic fan speed control settings */
537 data->pwm_fcms[0] = w83795_read(client, W83795_REG_FCMS1);
538 data->pwm_fcms[1] = w83795_read(client, W83795_REG_FCMS2);
539 for (i = 0; i < ARRAY_SIZE(data->pwm_tfmr); i++)
540 data->pwm_tfmr[i] = w83795_read(client, W83795_REG_TFMR(i));
541 data->pwm_fomc = w83795_read(client, W83795_REG_FOMC);
542 for (i = 0; i < data->has_pwm; i++) {
543 for (tmp = PWM_FREQ; tmp <= PWM_STOP_TIME; tmp++)
544 data->pwm[i][tmp] =
545 w83795_read(client, W83795_REG_PWM(i, tmp));
546 }
547 for (i = 0; i < ARRAY_SIZE(data->target_speed); i++) {
548 data->target_speed[i] =
549 w83795_read(client, W83795_REG_FTSH(i)) << 4;
550 data->target_speed[i] |=
551 w83795_read(client, W83795_REG_FTSL(i)) >> 4;
552 }
553 data->tol_speed = w83795_read(client, W83795_REG_TFTS) & 0x3f;
554
555 for (i = 0; i < ARRAY_SIZE(data->pwm_temp); i++) {
556 data->pwm_temp[i][TEMP_PWM_TTTI] =
557 w83795_read(client, W83795_REG_TTTI(i)) & 0x7f;
558 data->pwm_temp[i][TEMP_PWM_CTFS] =
559 w83795_read(client, W83795_REG_CTFS(i));
560 tmp = w83795_read(client, W83795_REG_HT(i));
561 data->pwm_temp[i][TEMP_PWM_HCT] = tmp >> 4;
562 data->pwm_temp[i][TEMP_PWM_HOT] = tmp & 0x0f;
563 }
564
565 /* Read SmartFanIV trip points */
566 for (i = 0; i < ARRAY_SIZE(data->sf4_reg); i++) {
567 for (tmp = 0; tmp < 7; tmp++) {
568 data->sf4_reg[i][SF4_TEMP][tmp] =
569 w83795_read(client,
570 W83795_REG_SF4_TEMP(i, tmp));
571 data->sf4_reg[i][SF4_PWM][tmp] =
572 w83795_read(client, W83795_REG_SF4_PWM(i, tmp));
573 }
574 }
575
576 /* Read setup PWM */
577 for (i = 0; i < ARRAY_SIZE(data->setup_pwm); i++)
578 data->setup_pwm[i] =
579 w83795_read(client, W83795_REG_SETUP_PWM(i));
580
581 data->valid_pwm_config = 1;
582
583 END:
584 mutex_unlock(&data->update_lock);
585 return data;
586 }
587
w83795_update_device(struct device * dev)588 static struct w83795_data *w83795_update_device(struct device *dev)
589 {
590 struct i2c_client *client = to_i2c_client(dev);
591 struct w83795_data *data = i2c_get_clientdata(client);
592 u16 tmp;
593 u8 intrusion;
594 int i;
595
596 mutex_lock(&data->update_lock);
597
598 if (!data->valid_limits)
599 w83795_update_limits(client);
600
601 if (!(time_after(jiffies, data->last_updated + HZ * 2)
602 || !data->valid))
603 goto END;
604
605 /* Update the voltages value */
606 for (i = 0; i < ARRAY_SIZE(data->in); i++) {
607 if (!(data->has_in & (1 << i)))
608 continue;
609 tmp = w83795_read(client, W83795_REG_IN[i][IN_READ]) << 2;
610 tmp |= w83795_read(client, W83795_REG_VRLSB) >> 6;
611 data->in[i][IN_READ] = tmp;
612 }
613
614 /* in0-2 can have dynamic limits (W83795G only) */
615 if (data->has_dyn_in) {
616 u8 lsb_max = w83795_read(client, IN_LSB_REG(0, IN_MAX));
617 u8 lsb_low = w83795_read(client, IN_LSB_REG(0, IN_LOW));
618
619 for (i = 0; i < 3; i++) {
620 if (!(data->has_dyn_in & (1 << i)))
621 continue;
622 data->in[i][IN_MAX] =
623 w83795_read(client, W83795_REG_IN[i][IN_MAX]);
624 data->in[i][IN_LOW] =
625 w83795_read(client, W83795_REG_IN[i][IN_LOW]);
626 data->in_lsb[i][IN_MAX] = (lsb_max >> (2 * i)) & 0x03;
627 data->in_lsb[i][IN_LOW] = (lsb_low >> (2 * i)) & 0x03;
628 }
629 }
630
631 /* Update fan */
632 for (i = 0; i < ARRAY_SIZE(data->fan); i++) {
633 if (!(data->has_fan & (1 << i)))
634 continue;
635 data->fan[i] = w83795_read(client, W83795_REG_FAN(i)) << 4;
636 data->fan[i] |= w83795_read(client, W83795_REG_VRLSB) >> 4;
637 }
638
639 /* Update temperature */
640 for (i = 0; i < ARRAY_SIZE(data->temp); i++) {
641 data->temp[i][TEMP_READ] =
642 w83795_read(client, W83795_REG_TEMP[i][TEMP_READ]);
643 data->temp_read_vrlsb[i] =
644 w83795_read(client, W83795_REG_VRLSB);
645 }
646
647 /* Update dts temperature */
648 if (data->enable_dts) {
649 for (i = 0; i < ARRAY_SIZE(data->dts); i++) {
650 if (!(data->has_dts & (1 << i)))
651 continue;
652 data->dts[i] =
653 w83795_read(client, W83795_REG_DTS(i));
654 data->dts_read_vrlsb[i] =
655 w83795_read(client, W83795_REG_VRLSB);
656 }
657 }
658
659 /* Update pwm output */
660 for (i = 0; i < data->has_pwm; i++) {
661 data->pwm[i][PWM_OUTPUT] =
662 w83795_read(client, W83795_REG_PWM(i, PWM_OUTPUT));
663 }
664
665 /*
666 * Update intrusion and alarms
667 * It is important to read intrusion first, because reading from
668 * register SMI STS6 clears the interrupt status temporarily.
669 */
670 tmp = w83795_read(client, W83795_REG_ALARM_CTRL);
671 /* Switch to interrupt status for intrusion if needed */
672 if (tmp & ALARM_CTRL_RTSACS)
673 w83795_write(client, W83795_REG_ALARM_CTRL,
674 tmp & ~ALARM_CTRL_RTSACS);
675 intrusion = w83795_read(client, W83795_REG_ALARM(5)) & (1 << 6);
676 /* Switch to real-time alarms */
677 w83795_write(client, W83795_REG_ALARM_CTRL, tmp | ALARM_CTRL_RTSACS);
678 for (i = 0; i < ARRAY_SIZE(data->alarms); i++)
679 data->alarms[i] = w83795_read(client, W83795_REG_ALARM(i));
680 data->alarms[5] |= intrusion;
681 /* Restore original configuration if needed */
682 if (!(tmp & ALARM_CTRL_RTSACS))
683 w83795_write(client, W83795_REG_ALARM_CTRL,
684 tmp & ~ALARM_CTRL_RTSACS);
685
686 data->last_updated = jiffies;
687 data->valid = true;
688
689 END:
690 mutex_unlock(&data->update_lock);
691 return data;
692 }
693
694 /*
695 * Sysfs attributes
696 */
697
698 #define ALARM_STATUS 0
699 #define BEEP_ENABLE 1
700 static ssize_t
show_alarm_beep(struct device * dev,struct device_attribute * attr,char * buf)701 show_alarm_beep(struct device *dev, struct device_attribute *attr, char *buf)
702 {
703 struct w83795_data *data = w83795_update_device(dev);
704 struct sensor_device_attribute_2 *sensor_attr =
705 to_sensor_dev_attr_2(attr);
706 int nr = sensor_attr->nr;
707 int index = sensor_attr->index >> 3;
708 int bit = sensor_attr->index & 0x07;
709 u8 val;
710
711 if (nr == ALARM_STATUS)
712 val = (data->alarms[index] >> bit) & 1;
713 else /* BEEP_ENABLE */
714 val = (data->beeps[index] >> bit) & 1;
715
716 return sprintf(buf, "%u\n", val);
717 }
718
719 static ssize_t
store_beep(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)720 store_beep(struct device *dev, struct device_attribute *attr,
721 const char *buf, size_t count)
722 {
723 struct i2c_client *client = to_i2c_client(dev);
724 struct w83795_data *data = i2c_get_clientdata(client);
725 struct sensor_device_attribute_2 *sensor_attr =
726 to_sensor_dev_attr_2(attr);
727 int index = sensor_attr->index >> 3;
728 int shift = sensor_attr->index & 0x07;
729 u8 beep_bit = 1 << shift;
730 unsigned long val;
731
732 if (kstrtoul(buf, 10, &val) < 0)
733 return -EINVAL;
734 if (val != 0 && val != 1)
735 return -EINVAL;
736
737 mutex_lock(&data->update_lock);
738 data->beeps[index] = w83795_read(client, W83795_REG_BEEP(index));
739 data->beeps[index] &= ~beep_bit;
740 data->beeps[index] |= val << shift;
741 w83795_write(client, W83795_REG_BEEP(index), data->beeps[index]);
742 mutex_unlock(&data->update_lock);
743
744 return count;
745 }
746
747 /* Write 0 to clear chassis alarm */
748 static ssize_t
store_chassis_clear(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)749 store_chassis_clear(struct device *dev,
750 struct device_attribute *attr, const char *buf,
751 size_t count)
752 {
753 struct i2c_client *client = to_i2c_client(dev);
754 struct w83795_data *data = i2c_get_clientdata(client);
755 unsigned long val;
756
757 if (kstrtoul(buf, 10, &val) < 0 || val != 0)
758 return -EINVAL;
759
760 mutex_lock(&data->update_lock);
761 val = w83795_read(client, W83795_REG_CLR_CHASSIS);
762 val |= 0x80;
763 w83795_write(client, W83795_REG_CLR_CHASSIS, val);
764
765 /* Clear status and force cache refresh */
766 w83795_read(client, W83795_REG_ALARM(5));
767 data->valid = false;
768 mutex_unlock(&data->update_lock);
769 return count;
770 }
771
772 #define FAN_INPUT 0
773 #define FAN_MIN 1
774 static ssize_t
show_fan(struct device * dev,struct device_attribute * attr,char * buf)775 show_fan(struct device *dev, struct device_attribute *attr, char *buf)
776 {
777 struct sensor_device_attribute_2 *sensor_attr =
778 to_sensor_dev_attr_2(attr);
779 int nr = sensor_attr->nr;
780 int index = sensor_attr->index;
781 struct w83795_data *data = w83795_update_device(dev);
782 u16 val;
783
784 if (nr == FAN_INPUT)
785 val = data->fan[index] & 0x0fff;
786 else
787 val = data->fan_min[index] & 0x0fff;
788
789 return sprintf(buf, "%lu\n", fan_from_reg(val));
790 }
791
792 static ssize_t
store_fan_min(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)793 store_fan_min(struct device *dev, struct device_attribute *attr,
794 const char *buf, size_t count)
795 {
796 struct sensor_device_attribute_2 *sensor_attr =
797 to_sensor_dev_attr_2(attr);
798 int index = sensor_attr->index;
799 struct i2c_client *client = to_i2c_client(dev);
800 struct w83795_data *data = i2c_get_clientdata(client);
801 unsigned long val;
802
803 if (kstrtoul(buf, 10, &val))
804 return -EINVAL;
805 val = fan_to_reg(val);
806
807 mutex_lock(&data->update_lock);
808 data->fan_min[index] = val;
809 w83795_write(client, W83795_REG_FAN_MIN_HL(index), (val >> 4) & 0xff);
810 val &= 0x0f;
811 if (index & 1) {
812 val <<= 4;
813 val |= w83795_read(client, W83795_REG_FAN_MIN_LSB(index))
814 & 0x0f;
815 } else {
816 val |= w83795_read(client, W83795_REG_FAN_MIN_LSB(index))
817 & 0xf0;
818 }
819 w83795_write(client, W83795_REG_FAN_MIN_LSB(index), val & 0xff);
820 mutex_unlock(&data->update_lock);
821
822 return count;
823 }
824
825 static ssize_t
show_pwm(struct device * dev,struct device_attribute * attr,char * buf)826 show_pwm(struct device *dev, struct device_attribute *attr, char *buf)
827 {
828 struct w83795_data *data;
829 struct sensor_device_attribute_2 *sensor_attr =
830 to_sensor_dev_attr_2(attr);
831 int nr = sensor_attr->nr;
832 int index = sensor_attr->index;
833 unsigned int val;
834
835 data = nr == PWM_OUTPUT ? w83795_update_device(dev)
836 : w83795_update_pwm_config(dev);
837
838 switch (nr) {
839 case PWM_STOP_TIME:
840 val = time_from_reg(data->pwm[index][nr]);
841 break;
842 case PWM_FREQ:
843 val = pwm_freq_from_reg(data->pwm[index][nr], data->clkin);
844 break;
845 default:
846 val = data->pwm[index][nr];
847 break;
848 }
849
850 return sprintf(buf, "%u\n", val);
851 }
852
853 static ssize_t
store_pwm(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)854 store_pwm(struct device *dev, struct device_attribute *attr,
855 const char *buf, size_t count)
856 {
857 struct i2c_client *client = to_i2c_client(dev);
858 struct w83795_data *data = i2c_get_clientdata(client);
859 struct sensor_device_attribute_2 *sensor_attr =
860 to_sensor_dev_attr_2(attr);
861 int nr = sensor_attr->nr;
862 int index = sensor_attr->index;
863 unsigned long val;
864
865 if (kstrtoul(buf, 10, &val) < 0)
866 return -EINVAL;
867
868 mutex_lock(&data->update_lock);
869 switch (nr) {
870 case PWM_STOP_TIME:
871 val = time_to_reg(val);
872 break;
873 case PWM_FREQ:
874 val = pwm_freq_to_reg(val, data->clkin);
875 break;
876 default:
877 val = clamp_val(val, 0, 0xff);
878 break;
879 }
880 w83795_write(client, W83795_REG_PWM(index, nr), val);
881 data->pwm[index][nr] = val;
882 mutex_unlock(&data->update_lock);
883 return count;
884 }
885
886 static ssize_t
show_pwm_enable(struct device * dev,struct device_attribute * attr,char * buf)887 show_pwm_enable(struct device *dev, struct device_attribute *attr, char *buf)
888 {
889 struct sensor_device_attribute_2 *sensor_attr =
890 to_sensor_dev_attr_2(attr);
891 struct w83795_data *data = w83795_update_pwm_config(dev);
892 int index = sensor_attr->index;
893 u8 tmp;
894
895 /* Speed cruise mode */
896 if (data->pwm_fcms[0] & (1 << index)) {
897 tmp = 2;
898 goto out;
899 }
900 /* Thermal cruise or SmartFan IV mode */
901 for (tmp = 0; tmp < 6; tmp++) {
902 if (data->pwm_tfmr[tmp] & (1 << index)) {
903 tmp = 3;
904 goto out;
905 }
906 }
907 /* Manual mode */
908 tmp = 1;
909
910 out:
911 return sprintf(buf, "%u\n", tmp);
912 }
913
914 static ssize_t
store_pwm_enable(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)915 store_pwm_enable(struct device *dev, struct device_attribute *attr,
916 const char *buf, size_t count)
917 {
918 struct i2c_client *client = to_i2c_client(dev);
919 struct w83795_data *data = w83795_update_pwm_config(dev);
920 struct sensor_device_attribute_2 *sensor_attr =
921 to_sensor_dev_attr_2(attr);
922 int index = sensor_attr->index;
923 unsigned long val;
924 int i;
925
926 if (kstrtoul(buf, 10, &val) < 0)
927 return -EINVAL;
928 if (val < 1 || val > 2)
929 return -EINVAL;
930
931 #ifndef CONFIG_SENSORS_W83795_FANCTRL
932 if (val > 1) {
933 dev_warn(dev, "Automatic fan speed control support disabled\n");
934 dev_warn(dev, "Build with CONFIG_SENSORS_W83795_FANCTRL=y if you want it\n");
935 return -EOPNOTSUPP;
936 }
937 #endif
938
939 mutex_lock(&data->update_lock);
940 switch (val) {
941 case 1:
942 /* Clear speed cruise mode bits */
943 data->pwm_fcms[0] &= ~(1 << index);
944 w83795_write(client, W83795_REG_FCMS1, data->pwm_fcms[0]);
945 /* Clear thermal cruise mode bits */
946 for (i = 0; i < 6; i++) {
947 data->pwm_tfmr[i] &= ~(1 << index);
948 w83795_write(client, W83795_REG_TFMR(i),
949 data->pwm_tfmr[i]);
950 }
951 break;
952 case 2:
953 data->pwm_fcms[0] |= (1 << index);
954 w83795_write(client, W83795_REG_FCMS1, data->pwm_fcms[0]);
955 break;
956 }
957 mutex_unlock(&data->update_lock);
958 return count;
959 }
960
961 static ssize_t
show_pwm_mode(struct device * dev,struct device_attribute * attr,char * buf)962 show_pwm_mode(struct device *dev, struct device_attribute *attr, char *buf)
963 {
964 struct w83795_data *data = w83795_update_pwm_config(dev);
965 int index = to_sensor_dev_attr_2(attr)->index;
966 unsigned int mode;
967
968 if (data->pwm_fomc & (1 << index))
969 mode = 0; /* DC */
970 else
971 mode = 1; /* PWM */
972
973 return sprintf(buf, "%u\n", mode);
974 }
975
976 /*
977 * Check whether a given temperature source can ever be useful.
978 * Returns the number of selectable temperature channels which are
979 * enabled.
980 */
w83795_tss_useful(const struct w83795_data * data,int tsrc)981 static int w83795_tss_useful(const struct w83795_data *data, int tsrc)
982 {
983 int useful = 0, i;
984
985 for (i = 0; i < 4; i++) {
986 if (tss_map[i][tsrc] == TSS_MAP_RESERVED)
987 continue;
988 if (tss_map[i][tsrc] < 6) /* Analog */
989 useful += (data->has_temp >> tss_map[i][tsrc]) & 1;
990 else /* Digital */
991 useful += (data->has_dts >> (tss_map[i][tsrc] - 6)) & 1;
992 }
993
994 return useful;
995 }
996
997 static ssize_t
show_temp_src(struct device * dev,struct device_attribute * attr,char * buf)998 show_temp_src(struct device *dev, struct device_attribute *attr, char *buf)
999 {
1000 struct sensor_device_attribute_2 *sensor_attr =
1001 to_sensor_dev_attr_2(attr);
1002 struct w83795_data *data = w83795_update_pwm_config(dev);
1003 int index = sensor_attr->index;
1004 u8 tmp = data->temp_src[index / 2];
1005
1006 if (index & 1)
1007 tmp >>= 4; /* Pick high nibble */
1008 else
1009 tmp &= 0x0f; /* Pick low nibble */
1010
1011 /* Look-up the actual temperature channel number */
1012 if (tmp >= 4 || tss_map[tmp][index] == TSS_MAP_RESERVED)
1013 return -EINVAL; /* Shouldn't happen */
1014
1015 return sprintf(buf, "%u\n", (unsigned int)tss_map[tmp][index] + 1);
1016 }
1017
1018 static ssize_t
store_temp_src(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)1019 store_temp_src(struct device *dev, struct device_attribute *attr,
1020 const char *buf, size_t count)
1021 {
1022 struct i2c_client *client = to_i2c_client(dev);
1023 struct w83795_data *data = w83795_update_pwm_config(dev);
1024 struct sensor_device_attribute_2 *sensor_attr =
1025 to_sensor_dev_attr_2(attr);
1026 int index = sensor_attr->index;
1027 int tmp;
1028 unsigned long channel;
1029 u8 val = index / 2;
1030
1031 if (kstrtoul(buf, 10, &channel) < 0 ||
1032 channel < 1 || channel > 14)
1033 return -EINVAL;
1034
1035 /* Check if request can be fulfilled */
1036 for (tmp = 0; tmp < 4; tmp++) {
1037 if (tss_map[tmp][index] == channel - 1)
1038 break;
1039 }
1040 if (tmp == 4) /* No match */
1041 return -EINVAL;
1042
1043 mutex_lock(&data->update_lock);
1044 if (index & 1) {
1045 tmp <<= 4;
1046 data->temp_src[val] &= 0x0f;
1047 } else {
1048 data->temp_src[val] &= 0xf0;
1049 }
1050 data->temp_src[val] |= tmp;
1051 w83795_write(client, W83795_REG_TSS(val), data->temp_src[val]);
1052 mutex_unlock(&data->update_lock);
1053
1054 return count;
1055 }
1056
1057 #define TEMP_PWM_ENABLE 0
1058 #define TEMP_PWM_FAN_MAP 1
1059 static ssize_t
show_temp_pwm_enable(struct device * dev,struct device_attribute * attr,char * buf)1060 show_temp_pwm_enable(struct device *dev, struct device_attribute *attr,
1061 char *buf)
1062 {
1063 struct w83795_data *data = w83795_update_pwm_config(dev);
1064 struct sensor_device_attribute_2 *sensor_attr =
1065 to_sensor_dev_attr_2(attr);
1066 int nr = sensor_attr->nr;
1067 int index = sensor_attr->index;
1068 u8 tmp = 0xff;
1069
1070 switch (nr) {
1071 case TEMP_PWM_ENABLE:
1072 tmp = (data->pwm_fcms[1] >> index) & 1;
1073 if (tmp)
1074 tmp = 4;
1075 else
1076 tmp = 3;
1077 break;
1078 case TEMP_PWM_FAN_MAP:
1079 tmp = data->pwm_tfmr[index];
1080 break;
1081 }
1082
1083 return sprintf(buf, "%u\n", tmp);
1084 }
1085
1086 static ssize_t
store_temp_pwm_enable(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)1087 store_temp_pwm_enable(struct device *dev, struct device_attribute *attr,
1088 const char *buf, size_t count)
1089 {
1090 struct i2c_client *client = to_i2c_client(dev);
1091 struct w83795_data *data = w83795_update_pwm_config(dev);
1092 struct sensor_device_attribute_2 *sensor_attr =
1093 to_sensor_dev_attr_2(attr);
1094 int nr = sensor_attr->nr;
1095 int index = sensor_attr->index;
1096 unsigned long tmp;
1097
1098 if (kstrtoul(buf, 10, &tmp) < 0)
1099 return -EINVAL;
1100
1101 switch (nr) {
1102 case TEMP_PWM_ENABLE:
1103 if (tmp != 3 && tmp != 4)
1104 return -EINVAL;
1105 tmp -= 3;
1106 mutex_lock(&data->update_lock);
1107 data->pwm_fcms[1] &= ~(1 << index);
1108 data->pwm_fcms[1] |= tmp << index;
1109 w83795_write(client, W83795_REG_FCMS2, data->pwm_fcms[1]);
1110 mutex_unlock(&data->update_lock);
1111 break;
1112 case TEMP_PWM_FAN_MAP:
1113 mutex_lock(&data->update_lock);
1114 tmp = clamp_val(tmp, 0, 0xff);
1115 w83795_write(client, W83795_REG_TFMR(index), tmp);
1116 data->pwm_tfmr[index] = tmp;
1117 mutex_unlock(&data->update_lock);
1118 break;
1119 }
1120 return count;
1121 }
1122
1123 #define FANIN_TARGET 0
1124 #define FANIN_TOL 1
1125 static ssize_t
show_fanin(struct device * dev,struct device_attribute * attr,char * buf)1126 show_fanin(struct device *dev, struct device_attribute *attr, char *buf)
1127 {
1128 struct w83795_data *data = w83795_update_pwm_config(dev);
1129 struct sensor_device_attribute_2 *sensor_attr =
1130 to_sensor_dev_attr_2(attr);
1131 int nr = sensor_attr->nr;
1132 int index = sensor_attr->index;
1133 u16 tmp = 0;
1134
1135 switch (nr) {
1136 case FANIN_TARGET:
1137 tmp = fan_from_reg(data->target_speed[index]);
1138 break;
1139 case FANIN_TOL:
1140 tmp = data->tol_speed;
1141 break;
1142 }
1143
1144 return sprintf(buf, "%u\n", tmp);
1145 }
1146
1147 static ssize_t
store_fanin(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)1148 store_fanin(struct device *dev, struct device_attribute *attr,
1149 const char *buf, size_t count)
1150 {
1151 struct i2c_client *client = to_i2c_client(dev);
1152 struct w83795_data *data = i2c_get_clientdata(client);
1153 struct sensor_device_attribute_2 *sensor_attr =
1154 to_sensor_dev_attr_2(attr);
1155 int nr = sensor_attr->nr;
1156 int index = sensor_attr->index;
1157 unsigned long val;
1158
1159 if (kstrtoul(buf, 10, &val) < 0)
1160 return -EINVAL;
1161
1162 mutex_lock(&data->update_lock);
1163 switch (nr) {
1164 case FANIN_TARGET:
1165 val = fan_to_reg(clamp_val(val, 0, 0xfff));
1166 w83795_write(client, W83795_REG_FTSH(index), val >> 4);
1167 w83795_write(client, W83795_REG_FTSL(index), (val << 4) & 0xf0);
1168 data->target_speed[index] = val;
1169 break;
1170 case FANIN_TOL:
1171 val = clamp_val(val, 0, 0x3f);
1172 w83795_write(client, W83795_REG_TFTS, val);
1173 data->tol_speed = val;
1174 break;
1175 }
1176 mutex_unlock(&data->update_lock);
1177
1178 return count;
1179 }
1180
1181
1182 static ssize_t
show_temp_pwm(struct device * dev,struct device_attribute * attr,char * buf)1183 show_temp_pwm(struct device *dev, struct device_attribute *attr, char *buf)
1184 {
1185 struct w83795_data *data = w83795_update_pwm_config(dev);
1186 struct sensor_device_attribute_2 *sensor_attr =
1187 to_sensor_dev_attr_2(attr);
1188 int nr = sensor_attr->nr;
1189 int index = sensor_attr->index;
1190 long tmp = temp_from_reg(data->pwm_temp[index][nr]);
1191
1192 return sprintf(buf, "%ld\n", tmp);
1193 }
1194
1195 static ssize_t
store_temp_pwm(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)1196 store_temp_pwm(struct device *dev, struct device_attribute *attr,
1197 const char *buf, size_t count)
1198 {
1199 struct i2c_client *client = to_i2c_client(dev);
1200 struct w83795_data *data = i2c_get_clientdata(client);
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 unsigned long val;
1206 u8 tmp;
1207
1208 if (kstrtoul(buf, 10, &val) < 0)
1209 return -EINVAL;
1210 val /= 1000;
1211
1212 mutex_lock(&data->update_lock);
1213 switch (nr) {
1214 case TEMP_PWM_TTTI:
1215 val = clamp_val(val, 0, 0x7f);
1216 w83795_write(client, W83795_REG_TTTI(index), val);
1217 break;
1218 case TEMP_PWM_CTFS:
1219 val = clamp_val(val, 0, 0x7f);
1220 w83795_write(client, W83795_REG_CTFS(index), val);
1221 break;
1222 case TEMP_PWM_HCT:
1223 val = clamp_val(val, 0, 0x0f);
1224 tmp = w83795_read(client, W83795_REG_HT(index));
1225 tmp &= 0x0f;
1226 tmp |= (val << 4) & 0xf0;
1227 w83795_write(client, W83795_REG_HT(index), tmp);
1228 break;
1229 case TEMP_PWM_HOT:
1230 val = clamp_val(val, 0, 0x0f);
1231 tmp = w83795_read(client, W83795_REG_HT(index));
1232 tmp &= 0xf0;
1233 tmp |= val & 0x0f;
1234 w83795_write(client, W83795_REG_HT(index), tmp);
1235 break;
1236 }
1237 data->pwm_temp[index][nr] = val;
1238 mutex_unlock(&data->update_lock);
1239
1240 return count;
1241 }
1242
1243 static ssize_t
show_sf4_pwm(struct device * dev,struct device_attribute * attr,char * buf)1244 show_sf4_pwm(struct device *dev, struct device_attribute *attr, char *buf)
1245 {
1246 struct w83795_data *data = w83795_update_pwm_config(dev);
1247 struct sensor_device_attribute_2 *sensor_attr =
1248 to_sensor_dev_attr_2(attr);
1249 int nr = sensor_attr->nr;
1250 int index = sensor_attr->index;
1251
1252 return sprintf(buf, "%u\n", data->sf4_reg[index][SF4_PWM][nr]);
1253 }
1254
1255 static ssize_t
store_sf4_pwm(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)1256 store_sf4_pwm(struct device *dev, struct device_attribute *attr,
1257 const char *buf, size_t count)
1258 {
1259 struct i2c_client *client = to_i2c_client(dev);
1260 struct w83795_data *data = i2c_get_clientdata(client);
1261 struct sensor_device_attribute_2 *sensor_attr =
1262 to_sensor_dev_attr_2(attr);
1263 int nr = sensor_attr->nr;
1264 int index = sensor_attr->index;
1265 unsigned long val;
1266
1267 if (kstrtoul(buf, 10, &val) < 0)
1268 return -EINVAL;
1269
1270 mutex_lock(&data->update_lock);
1271 w83795_write(client, W83795_REG_SF4_PWM(index, nr), val);
1272 data->sf4_reg[index][SF4_PWM][nr] = val;
1273 mutex_unlock(&data->update_lock);
1274
1275 return count;
1276 }
1277
1278 static ssize_t
show_sf4_temp(struct device * dev,struct device_attribute * attr,char * buf)1279 show_sf4_temp(struct device *dev, struct device_attribute *attr, char *buf)
1280 {
1281 struct w83795_data *data = w83795_update_pwm_config(dev);
1282 struct sensor_device_attribute_2 *sensor_attr =
1283 to_sensor_dev_attr_2(attr);
1284 int nr = sensor_attr->nr;
1285 int index = sensor_attr->index;
1286
1287 return sprintf(buf, "%u\n",
1288 (data->sf4_reg[index][SF4_TEMP][nr]) * 1000);
1289 }
1290
1291 static ssize_t
store_sf4_temp(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)1292 store_sf4_temp(struct device *dev, struct device_attribute *attr,
1293 const char *buf, size_t count)
1294 {
1295 struct i2c_client *client = to_i2c_client(dev);
1296 struct w83795_data *data = i2c_get_clientdata(client);
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 unsigned long val;
1302
1303 if (kstrtoul(buf, 10, &val) < 0)
1304 return -EINVAL;
1305 val /= 1000;
1306
1307 mutex_lock(&data->update_lock);
1308 w83795_write(client, W83795_REG_SF4_TEMP(index, nr), val);
1309 data->sf4_reg[index][SF4_TEMP][nr] = val;
1310 mutex_unlock(&data->update_lock);
1311
1312 return count;
1313 }
1314
1315
1316 static ssize_t
show_temp(struct device * dev,struct device_attribute * attr,char * buf)1317 show_temp(struct device *dev, struct device_attribute *attr, char *buf)
1318 {
1319 struct sensor_device_attribute_2 *sensor_attr =
1320 to_sensor_dev_attr_2(attr);
1321 int nr = sensor_attr->nr;
1322 int index = sensor_attr->index;
1323 struct w83795_data *data = w83795_update_device(dev);
1324 long temp = temp_from_reg(data->temp[index][nr]);
1325
1326 if (nr == TEMP_READ)
1327 temp += (data->temp_read_vrlsb[index] >> 6) * 250;
1328 return sprintf(buf, "%ld\n", temp);
1329 }
1330
1331 static ssize_t
store_temp(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)1332 store_temp(struct device *dev, struct device_attribute *attr,
1333 const char *buf, size_t count)
1334 {
1335 struct sensor_device_attribute_2 *sensor_attr =
1336 to_sensor_dev_attr_2(attr);
1337 int nr = sensor_attr->nr;
1338 int index = sensor_attr->index;
1339 struct i2c_client *client = to_i2c_client(dev);
1340 struct w83795_data *data = i2c_get_clientdata(client);
1341 long tmp;
1342
1343 if (kstrtol(buf, 10, &tmp) < 0)
1344 return -EINVAL;
1345
1346 mutex_lock(&data->update_lock);
1347 data->temp[index][nr] = temp_to_reg(tmp, -128, 127);
1348 w83795_write(client, W83795_REG_TEMP[index][nr], data->temp[index][nr]);
1349 mutex_unlock(&data->update_lock);
1350 return count;
1351 }
1352
1353
1354 static ssize_t
show_dts_mode(struct device * dev,struct device_attribute * attr,char * buf)1355 show_dts_mode(struct device *dev, struct device_attribute *attr, char *buf)
1356 {
1357 struct w83795_data *data = dev_get_drvdata(dev);
1358 int tmp;
1359
1360 if (data->enable_dts & 2)
1361 tmp = 5;
1362 else
1363 tmp = 6;
1364
1365 return sprintf(buf, "%d\n", tmp);
1366 }
1367
1368 static ssize_t
show_dts(struct device * dev,struct device_attribute * attr,char * buf)1369 show_dts(struct device *dev, struct device_attribute *attr, char *buf)
1370 {
1371 struct sensor_device_attribute_2 *sensor_attr =
1372 to_sensor_dev_attr_2(attr);
1373 int index = sensor_attr->index;
1374 struct w83795_data *data = w83795_update_device(dev);
1375 long temp = temp_from_reg(data->dts[index]);
1376
1377 temp += (data->dts_read_vrlsb[index] >> 6) * 250;
1378 return sprintf(buf, "%ld\n", temp);
1379 }
1380
1381 static ssize_t
show_dts_ext(struct device * dev,struct device_attribute * attr,char * buf)1382 show_dts_ext(struct device *dev, struct device_attribute *attr, char *buf)
1383 {
1384 struct sensor_device_attribute_2 *sensor_attr =
1385 to_sensor_dev_attr_2(attr);
1386 int nr = sensor_attr->nr;
1387 struct w83795_data *data = dev_get_drvdata(dev);
1388 long temp = temp_from_reg(data->dts_ext[nr]);
1389
1390 return sprintf(buf, "%ld\n", temp);
1391 }
1392
1393 static ssize_t
store_dts_ext(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)1394 store_dts_ext(struct device *dev, struct device_attribute *attr,
1395 const char *buf, size_t count)
1396 {
1397 struct sensor_device_attribute_2 *sensor_attr =
1398 to_sensor_dev_attr_2(attr);
1399 int nr = sensor_attr->nr;
1400 struct i2c_client *client = to_i2c_client(dev);
1401 struct w83795_data *data = i2c_get_clientdata(client);
1402 long tmp;
1403
1404 if (kstrtol(buf, 10, &tmp) < 0)
1405 return -EINVAL;
1406
1407 mutex_lock(&data->update_lock);
1408 data->dts_ext[nr] = temp_to_reg(tmp, -128, 127);
1409 w83795_write(client, W83795_REG_DTS_EXT(nr), data->dts_ext[nr]);
1410 mutex_unlock(&data->update_lock);
1411 return count;
1412 }
1413
1414
1415 static ssize_t
show_temp_mode(struct device * dev,struct device_attribute * attr,char * buf)1416 show_temp_mode(struct device *dev, struct device_attribute *attr, char *buf)
1417 {
1418 struct w83795_data *data = dev_get_drvdata(dev);
1419 struct sensor_device_attribute_2 *sensor_attr =
1420 to_sensor_dev_attr_2(attr);
1421 int index = sensor_attr->index;
1422 int tmp;
1423
1424 if (data->temp_mode & (1 << index))
1425 tmp = 3; /* Thermal diode */
1426 else
1427 tmp = 4; /* Thermistor */
1428
1429 return sprintf(buf, "%d\n", tmp);
1430 }
1431
1432 /* Only for temp1-4 (temp5-6 can only be thermistor) */
1433 static ssize_t
store_temp_mode(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)1434 store_temp_mode(struct device *dev, struct device_attribute *attr,
1435 const char *buf, size_t count)
1436 {
1437 struct i2c_client *client = to_i2c_client(dev);
1438 struct w83795_data *data = i2c_get_clientdata(client);
1439 struct sensor_device_attribute_2 *sensor_attr =
1440 to_sensor_dev_attr_2(attr);
1441 int index = sensor_attr->index;
1442 int reg_shift;
1443 unsigned long val;
1444 u8 tmp;
1445
1446 if (kstrtoul(buf, 10, &val) < 0)
1447 return -EINVAL;
1448 if ((val != 4) && (val != 3))
1449 return -EINVAL;
1450
1451 mutex_lock(&data->update_lock);
1452 if (val == 3) {
1453 /* Thermal diode */
1454 val = 0x01;
1455 data->temp_mode |= 1 << index;
1456 } else if (val == 4) {
1457 /* Thermistor */
1458 val = 0x03;
1459 data->temp_mode &= ~(1 << index);
1460 }
1461
1462 reg_shift = 2 * index;
1463 tmp = w83795_read(client, W83795_REG_TEMP_CTRL2);
1464 tmp &= ~(0x03 << reg_shift);
1465 tmp |= val << reg_shift;
1466 w83795_write(client, W83795_REG_TEMP_CTRL2, tmp);
1467
1468 mutex_unlock(&data->update_lock);
1469 return count;
1470 }
1471
1472
1473 /* show/store VIN */
1474 static ssize_t
show_in(struct device * dev,struct device_attribute * attr,char * buf)1475 show_in(struct device *dev, struct device_attribute *attr, char *buf)
1476 {
1477 struct sensor_device_attribute_2 *sensor_attr =
1478 to_sensor_dev_attr_2(attr);
1479 int nr = sensor_attr->nr;
1480 int index = sensor_attr->index;
1481 struct w83795_data *data = w83795_update_device(dev);
1482 u16 val = data->in[index][nr];
1483 u8 lsb_idx;
1484
1485 switch (nr) {
1486 case IN_READ:
1487 /* calculate this value again by sensors as sensors3.conf */
1488 if ((index >= 17) &&
1489 !((data->has_gain >> (index - 17)) & 1))
1490 val *= 8;
1491 break;
1492 case IN_MAX:
1493 case IN_LOW:
1494 lsb_idx = IN_LSB_SHIFT_IDX[index][IN_LSB_IDX];
1495 val <<= 2;
1496 val |= (data->in_lsb[lsb_idx][nr] >>
1497 IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT]) & 0x03;
1498 if ((index >= 17) &&
1499 !((data->has_gain >> (index - 17)) & 1))
1500 val *= 8;
1501 break;
1502 }
1503 val = in_from_reg(index, val);
1504
1505 return sprintf(buf, "%d\n", val);
1506 }
1507
1508 static ssize_t
store_in(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)1509 store_in(struct device *dev, struct device_attribute *attr,
1510 const char *buf, size_t count)
1511 {
1512 struct sensor_device_attribute_2 *sensor_attr =
1513 to_sensor_dev_attr_2(attr);
1514 int nr = sensor_attr->nr;
1515 int index = sensor_attr->index;
1516 struct i2c_client *client = to_i2c_client(dev);
1517 struct w83795_data *data = i2c_get_clientdata(client);
1518 unsigned long val;
1519 u8 tmp;
1520 u8 lsb_idx;
1521
1522 if (kstrtoul(buf, 10, &val) < 0)
1523 return -EINVAL;
1524 val = in_to_reg(index, val);
1525
1526 if ((index >= 17) &&
1527 !((data->has_gain >> (index - 17)) & 1))
1528 val /= 8;
1529 val = clamp_val(val, 0, 0x3FF);
1530 mutex_lock(&data->update_lock);
1531
1532 lsb_idx = IN_LSB_SHIFT_IDX[index][IN_LSB_IDX];
1533 tmp = w83795_read(client, IN_LSB_REG(lsb_idx, nr));
1534 tmp &= ~(0x03 << IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT]);
1535 tmp |= (val & 0x03) << IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT];
1536 w83795_write(client, IN_LSB_REG(lsb_idx, nr), tmp);
1537 data->in_lsb[lsb_idx][nr] = tmp;
1538
1539 tmp = (val >> 2) & 0xff;
1540 w83795_write(client, W83795_REG_IN[index][nr], tmp);
1541 data->in[index][nr] = tmp;
1542
1543 mutex_unlock(&data->update_lock);
1544 return count;
1545 }
1546
1547
1548 #ifdef CONFIG_SENSORS_W83795_FANCTRL
1549 static ssize_t
show_sf_setup(struct device * dev,struct device_attribute * attr,char * buf)1550 show_sf_setup(struct device *dev, struct device_attribute *attr, char *buf)
1551 {
1552 struct sensor_device_attribute_2 *sensor_attr =
1553 to_sensor_dev_attr_2(attr);
1554 int nr = sensor_attr->nr;
1555 struct w83795_data *data = w83795_update_pwm_config(dev);
1556 u16 val = data->setup_pwm[nr];
1557
1558 switch (nr) {
1559 case SETUP_PWM_UPTIME:
1560 case SETUP_PWM_DOWNTIME:
1561 val = time_from_reg(val);
1562 break;
1563 }
1564
1565 return sprintf(buf, "%d\n", val);
1566 }
1567
1568 static ssize_t
store_sf_setup(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)1569 store_sf_setup(struct device *dev, struct device_attribute *attr,
1570 const char *buf, size_t count)
1571 {
1572 struct sensor_device_attribute_2 *sensor_attr =
1573 to_sensor_dev_attr_2(attr);
1574 int nr = sensor_attr->nr;
1575 struct i2c_client *client = to_i2c_client(dev);
1576 struct w83795_data *data = i2c_get_clientdata(client);
1577 unsigned long val;
1578
1579 if (kstrtoul(buf, 10, &val) < 0)
1580 return -EINVAL;
1581
1582 switch (nr) {
1583 case SETUP_PWM_DEFAULT:
1584 val = clamp_val(val, 0, 0xff);
1585 break;
1586 case SETUP_PWM_UPTIME:
1587 case SETUP_PWM_DOWNTIME:
1588 val = time_to_reg(val);
1589 if (val == 0)
1590 return -EINVAL;
1591 break;
1592 }
1593
1594 mutex_lock(&data->update_lock);
1595 data->setup_pwm[nr] = val;
1596 w83795_write(client, W83795_REG_SETUP_PWM(nr), val);
1597 mutex_unlock(&data->update_lock);
1598 return count;
1599 }
1600 #endif
1601
1602
1603 #define NOT_USED -1
1604
1605 /*
1606 * Don't change the attribute order, _max, _min and _beep are accessed by index
1607 * somewhere else in the code
1608 */
1609 #define SENSOR_ATTR_IN(index) { \
1610 SENSOR_ATTR_2(in##index##_input, S_IRUGO, show_in, NULL, \
1611 IN_READ, index), \
1612 SENSOR_ATTR_2(in##index##_max, S_IRUGO | S_IWUSR, show_in, \
1613 store_in, IN_MAX, index), \
1614 SENSOR_ATTR_2(in##index##_min, S_IRUGO | S_IWUSR, show_in, \
1615 store_in, IN_LOW, index), \
1616 SENSOR_ATTR_2(in##index##_alarm, S_IRUGO, show_alarm_beep, \
1617 NULL, ALARM_STATUS, index + ((index > 14) ? 1 : 0)), \
1618 SENSOR_ATTR_2(in##index##_beep, S_IWUSR | S_IRUGO, \
1619 show_alarm_beep, store_beep, BEEP_ENABLE, \
1620 index + ((index > 14) ? 1 : 0)) }
1621
1622 /*
1623 * Don't change the attribute order, _beep is accessed by index
1624 * somewhere else in the code
1625 */
1626 #define SENSOR_ATTR_FAN(index) { \
1627 SENSOR_ATTR_2(fan##index##_input, S_IRUGO, show_fan, \
1628 NULL, FAN_INPUT, index - 1), \
1629 SENSOR_ATTR_2(fan##index##_min, S_IWUSR | S_IRUGO, \
1630 show_fan, store_fan_min, FAN_MIN, index - 1), \
1631 SENSOR_ATTR_2(fan##index##_alarm, S_IRUGO, show_alarm_beep, \
1632 NULL, ALARM_STATUS, index + 31), \
1633 SENSOR_ATTR_2(fan##index##_beep, S_IWUSR | S_IRUGO, \
1634 show_alarm_beep, store_beep, BEEP_ENABLE, index + 31) }
1635
1636 #define SENSOR_ATTR_PWM(index) { \
1637 SENSOR_ATTR_2(pwm##index, S_IWUSR | S_IRUGO, show_pwm, \
1638 store_pwm, PWM_OUTPUT, index - 1), \
1639 SENSOR_ATTR_2(pwm##index##_enable, S_IWUSR | S_IRUGO, \
1640 show_pwm_enable, store_pwm_enable, NOT_USED, index - 1), \
1641 SENSOR_ATTR_2(pwm##index##_mode, S_IRUGO, \
1642 show_pwm_mode, NULL, NOT_USED, index - 1), \
1643 SENSOR_ATTR_2(pwm##index##_freq, S_IWUSR | S_IRUGO, \
1644 show_pwm, store_pwm, PWM_FREQ, index - 1), \
1645 SENSOR_ATTR_2(pwm##index##_nonstop, S_IWUSR | S_IRUGO, \
1646 show_pwm, store_pwm, PWM_NONSTOP, index - 1), \
1647 SENSOR_ATTR_2(pwm##index##_start, S_IWUSR | S_IRUGO, \
1648 show_pwm, store_pwm, PWM_START, index - 1), \
1649 SENSOR_ATTR_2(pwm##index##_stop_time, S_IWUSR | S_IRUGO, \
1650 show_pwm, store_pwm, PWM_STOP_TIME, index - 1), \
1651 SENSOR_ATTR_2(fan##index##_target, S_IWUSR | S_IRUGO, \
1652 show_fanin, store_fanin, FANIN_TARGET, index - 1) }
1653
1654 /*
1655 * Don't change the attribute order, _beep is accessed by index
1656 * somewhere else in the code
1657 */
1658 #define SENSOR_ATTR_DTS(index) { \
1659 SENSOR_ATTR_2(temp##index##_type, S_IRUGO , \
1660 show_dts_mode, NULL, NOT_USED, index - 7), \
1661 SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_dts, \
1662 NULL, NOT_USED, index - 7), \
1663 SENSOR_ATTR_2(temp##index##_crit, S_IRUGO | S_IWUSR, show_dts_ext, \
1664 store_dts_ext, DTS_CRIT, NOT_USED), \
1665 SENSOR_ATTR_2(temp##index##_crit_hyst, S_IRUGO | S_IWUSR, \
1666 show_dts_ext, store_dts_ext, DTS_CRIT_HYST, NOT_USED), \
1667 SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_dts_ext, \
1668 store_dts_ext, DTS_WARN, NOT_USED), \
1669 SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR, \
1670 show_dts_ext, store_dts_ext, DTS_WARN_HYST, NOT_USED), \
1671 SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO, \
1672 show_alarm_beep, NULL, ALARM_STATUS, index + 17), \
1673 SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO, \
1674 show_alarm_beep, store_beep, BEEP_ENABLE, index + 17) }
1675
1676 /*
1677 * Don't change the attribute order, _beep is accessed by index
1678 * somewhere else in the code
1679 */
1680 #define SENSOR_ATTR_TEMP(index) { \
1681 SENSOR_ATTR_2(temp##index##_type, S_IRUGO | (index < 5 ? S_IWUSR : 0), \
1682 show_temp_mode, store_temp_mode, NOT_USED, index - 1), \
1683 SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_temp, \
1684 NULL, TEMP_READ, index - 1), \
1685 SENSOR_ATTR_2(temp##index##_crit, S_IRUGO | S_IWUSR, show_temp, \
1686 store_temp, TEMP_CRIT, index - 1), \
1687 SENSOR_ATTR_2(temp##index##_crit_hyst, S_IRUGO | S_IWUSR, \
1688 show_temp, store_temp, TEMP_CRIT_HYST, index - 1), \
1689 SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_temp, \
1690 store_temp, TEMP_WARN, index - 1), \
1691 SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR, \
1692 show_temp, store_temp, TEMP_WARN_HYST, index - 1), \
1693 SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO, \
1694 show_alarm_beep, NULL, ALARM_STATUS, \
1695 index + (index > 4 ? 11 : 17)), \
1696 SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO, \
1697 show_alarm_beep, store_beep, BEEP_ENABLE, \
1698 index + (index > 4 ? 11 : 17)), \
1699 SENSOR_ATTR_2(temp##index##_pwm_enable, S_IWUSR | S_IRUGO, \
1700 show_temp_pwm_enable, store_temp_pwm_enable, \
1701 TEMP_PWM_ENABLE, index - 1), \
1702 SENSOR_ATTR_2(temp##index##_auto_channels_pwm, S_IWUSR | S_IRUGO, \
1703 show_temp_pwm_enable, store_temp_pwm_enable, \
1704 TEMP_PWM_FAN_MAP, index - 1), \
1705 SENSOR_ATTR_2(thermal_cruise##index, S_IWUSR | S_IRUGO, \
1706 show_temp_pwm, store_temp_pwm, TEMP_PWM_TTTI, index - 1), \
1707 SENSOR_ATTR_2(temp##index##_warn, S_IWUSR | S_IRUGO, \
1708 show_temp_pwm, store_temp_pwm, TEMP_PWM_CTFS, index - 1), \
1709 SENSOR_ATTR_2(temp##index##_warn_hyst, S_IWUSR | S_IRUGO, \
1710 show_temp_pwm, store_temp_pwm, TEMP_PWM_HCT, index - 1), \
1711 SENSOR_ATTR_2(temp##index##_operation_hyst, S_IWUSR | S_IRUGO, \
1712 show_temp_pwm, store_temp_pwm, TEMP_PWM_HOT, index - 1), \
1713 SENSOR_ATTR_2(temp##index##_auto_point1_pwm, S_IRUGO | S_IWUSR, \
1714 show_sf4_pwm, store_sf4_pwm, 0, index - 1), \
1715 SENSOR_ATTR_2(temp##index##_auto_point2_pwm, S_IRUGO | S_IWUSR, \
1716 show_sf4_pwm, store_sf4_pwm, 1, index - 1), \
1717 SENSOR_ATTR_2(temp##index##_auto_point3_pwm, S_IRUGO | S_IWUSR, \
1718 show_sf4_pwm, store_sf4_pwm, 2, index - 1), \
1719 SENSOR_ATTR_2(temp##index##_auto_point4_pwm, S_IRUGO | S_IWUSR, \
1720 show_sf4_pwm, store_sf4_pwm, 3, index - 1), \
1721 SENSOR_ATTR_2(temp##index##_auto_point5_pwm, S_IRUGO | S_IWUSR, \
1722 show_sf4_pwm, store_sf4_pwm, 4, index - 1), \
1723 SENSOR_ATTR_2(temp##index##_auto_point6_pwm, S_IRUGO | S_IWUSR, \
1724 show_sf4_pwm, store_sf4_pwm, 5, index - 1), \
1725 SENSOR_ATTR_2(temp##index##_auto_point7_pwm, S_IRUGO | S_IWUSR, \
1726 show_sf4_pwm, store_sf4_pwm, 6, index - 1), \
1727 SENSOR_ATTR_2(temp##index##_auto_point1_temp, S_IRUGO | S_IWUSR,\
1728 show_sf4_temp, store_sf4_temp, 0, index - 1), \
1729 SENSOR_ATTR_2(temp##index##_auto_point2_temp, S_IRUGO | S_IWUSR,\
1730 show_sf4_temp, store_sf4_temp, 1, index - 1), \
1731 SENSOR_ATTR_2(temp##index##_auto_point3_temp, S_IRUGO | S_IWUSR,\
1732 show_sf4_temp, store_sf4_temp, 2, index - 1), \
1733 SENSOR_ATTR_2(temp##index##_auto_point4_temp, S_IRUGO | S_IWUSR,\
1734 show_sf4_temp, store_sf4_temp, 3, index - 1), \
1735 SENSOR_ATTR_2(temp##index##_auto_point5_temp, S_IRUGO | S_IWUSR,\
1736 show_sf4_temp, store_sf4_temp, 4, index - 1), \
1737 SENSOR_ATTR_2(temp##index##_auto_point6_temp, S_IRUGO | S_IWUSR,\
1738 show_sf4_temp, store_sf4_temp, 5, index - 1), \
1739 SENSOR_ATTR_2(temp##index##_auto_point7_temp, S_IRUGO | S_IWUSR,\
1740 show_sf4_temp, store_sf4_temp, 6, index - 1) }
1741
1742
1743 static struct sensor_device_attribute_2 w83795_in[][5] = {
1744 SENSOR_ATTR_IN(0),
1745 SENSOR_ATTR_IN(1),
1746 SENSOR_ATTR_IN(2),
1747 SENSOR_ATTR_IN(3),
1748 SENSOR_ATTR_IN(4),
1749 SENSOR_ATTR_IN(5),
1750 SENSOR_ATTR_IN(6),
1751 SENSOR_ATTR_IN(7),
1752 SENSOR_ATTR_IN(8),
1753 SENSOR_ATTR_IN(9),
1754 SENSOR_ATTR_IN(10),
1755 SENSOR_ATTR_IN(11),
1756 SENSOR_ATTR_IN(12),
1757 SENSOR_ATTR_IN(13),
1758 SENSOR_ATTR_IN(14),
1759 SENSOR_ATTR_IN(15),
1760 SENSOR_ATTR_IN(16),
1761 SENSOR_ATTR_IN(17),
1762 SENSOR_ATTR_IN(18),
1763 SENSOR_ATTR_IN(19),
1764 SENSOR_ATTR_IN(20),
1765 };
1766
1767 static const struct sensor_device_attribute_2 w83795_fan[][4] = {
1768 SENSOR_ATTR_FAN(1),
1769 SENSOR_ATTR_FAN(2),
1770 SENSOR_ATTR_FAN(3),
1771 SENSOR_ATTR_FAN(4),
1772 SENSOR_ATTR_FAN(5),
1773 SENSOR_ATTR_FAN(6),
1774 SENSOR_ATTR_FAN(7),
1775 SENSOR_ATTR_FAN(8),
1776 SENSOR_ATTR_FAN(9),
1777 SENSOR_ATTR_FAN(10),
1778 SENSOR_ATTR_FAN(11),
1779 SENSOR_ATTR_FAN(12),
1780 SENSOR_ATTR_FAN(13),
1781 SENSOR_ATTR_FAN(14),
1782 };
1783
1784 static const struct sensor_device_attribute_2 w83795_temp[][28] = {
1785 SENSOR_ATTR_TEMP(1),
1786 SENSOR_ATTR_TEMP(2),
1787 SENSOR_ATTR_TEMP(3),
1788 SENSOR_ATTR_TEMP(4),
1789 SENSOR_ATTR_TEMP(5),
1790 SENSOR_ATTR_TEMP(6),
1791 };
1792
1793 static const struct sensor_device_attribute_2 w83795_dts[][8] = {
1794 SENSOR_ATTR_DTS(7),
1795 SENSOR_ATTR_DTS(8),
1796 SENSOR_ATTR_DTS(9),
1797 SENSOR_ATTR_DTS(10),
1798 SENSOR_ATTR_DTS(11),
1799 SENSOR_ATTR_DTS(12),
1800 SENSOR_ATTR_DTS(13),
1801 SENSOR_ATTR_DTS(14),
1802 };
1803
1804 static const struct sensor_device_attribute_2 w83795_pwm[][8] = {
1805 SENSOR_ATTR_PWM(1),
1806 SENSOR_ATTR_PWM(2),
1807 SENSOR_ATTR_PWM(3),
1808 SENSOR_ATTR_PWM(4),
1809 SENSOR_ATTR_PWM(5),
1810 SENSOR_ATTR_PWM(6),
1811 SENSOR_ATTR_PWM(7),
1812 SENSOR_ATTR_PWM(8),
1813 };
1814
1815 static const struct sensor_device_attribute_2 w83795_tss[6] = {
1816 SENSOR_ATTR_2(temp1_source_sel, S_IWUSR | S_IRUGO,
1817 show_temp_src, store_temp_src, NOT_USED, 0),
1818 SENSOR_ATTR_2(temp2_source_sel, S_IWUSR | S_IRUGO,
1819 show_temp_src, store_temp_src, NOT_USED, 1),
1820 SENSOR_ATTR_2(temp3_source_sel, S_IWUSR | S_IRUGO,
1821 show_temp_src, store_temp_src, NOT_USED, 2),
1822 SENSOR_ATTR_2(temp4_source_sel, S_IWUSR | S_IRUGO,
1823 show_temp_src, store_temp_src, NOT_USED, 3),
1824 SENSOR_ATTR_2(temp5_source_sel, S_IWUSR | S_IRUGO,
1825 show_temp_src, store_temp_src, NOT_USED, 4),
1826 SENSOR_ATTR_2(temp6_source_sel, S_IWUSR | S_IRUGO,
1827 show_temp_src, store_temp_src, NOT_USED, 5),
1828 };
1829
1830 static const struct sensor_device_attribute_2 sda_single_files[] = {
1831 SENSOR_ATTR_2(intrusion0_alarm, S_IWUSR | S_IRUGO, show_alarm_beep,
1832 store_chassis_clear, ALARM_STATUS, 46),
1833 #ifdef CONFIG_SENSORS_W83795_FANCTRL
1834 SENSOR_ATTR_2(speed_cruise_tolerance, S_IWUSR | S_IRUGO, show_fanin,
1835 store_fanin, FANIN_TOL, NOT_USED),
1836 SENSOR_ATTR_2(pwm_default, S_IWUSR | S_IRUGO, show_sf_setup,
1837 store_sf_setup, SETUP_PWM_DEFAULT, NOT_USED),
1838 SENSOR_ATTR_2(pwm_uptime, S_IWUSR | S_IRUGO, show_sf_setup,
1839 store_sf_setup, SETUP_PWM_UPTIME, NOT_USED),
1840 SENSOR_ATTR_2(pwm_downtime, S_IWUSR | S_IRUGO, show_sf_setup,
1841 store_sf_setup, SETUP_PWM_DOWNTIME, NOT_USED),
1842 #endif
1843 };
1844
1845 static const struct sensor_device_attribute_2 sda_beep_files[] = {
1846 SENSOR_ATTR_2(intrusion0_beep, S_IWUSR | S_IRUGO, show_alarm_beep,
1847 store_beep, BEEP_ENABLE, 46),
1848 SENSOR_ATTR_2(beep_enable, S_IWUSR | S_IRUGO, show_alarm_beep,
1849 store_beep, BEEP_ENABLE, 47),
1850 };
1851
1852 /*
1853 * Driver interface
1854 */
1855
w83795_init_client(struct i2c_client * client)1856 static void w83795_init_client(struct i2c_client *client)
1857 {
1858 struct w83795_data *data = i2c_get_clientdata(client);
1859 static const u16 clkin[4] = { /* in kHz */
1860 14318, 24000, 33333, 48000
1861 };
1862 u8 config;
1863
1864 if (reset)
1865 w83795_write(client, W83795_REG_CONFIG, 0x80);
1866
1867 /* Start monitoring if needed */
1868 config = w83795_read(client, W83795_REG_CONFIG);
1869 if (!(config & W83795_REG_CONFIG_START)) {
1870 dev_info(&client->dev, "Enabling monitoring operations\n");
1871 w83795_write(client, W83795_REG_CONFIG,
1872 config | W83795_REG_CONFIG_START);
1873 }
1874
1875 data->clkin = clkin[(config >> 3) & 0x3];
1876 dev_dbg(&client->dev, "clkin = %u kHz\n", data->clkin);
1877 }
1878
w83795_get_device_id(struct i2c_client * client)1879 static int w83795_get_device_id(struct i2c_client *client)
1880 {
1881 int device_id;
1882
1883 device_id = i2c_smbus_read_byte_data(client, W83795_REG_DEVICEID);
1884
1885 /*
1886 * Special case for rev. A chips; can't be checked first because later
1887 * revisions emulate this for compatibility
1888 */
1889 if (device_id < 0 || (device_id & 0xf0) != 0x50) {
1890 int alt_id;
1891
1892 alt_id = i2c_smbus_read_byte_data(client,
1893 W83795_REG_DEVICEID_A);
1894 if (alt_id == 0x50)
1895 device_id = alt_id;
1896 }
1897
1898 return device_id;
1899 }
1900
1901 /* Return 0 if detection is successful, -ENODEV otherwise */
w83795_detect(struct i2c_client * client,struct i2c_board_info * info)1902 static int w83795_detect(struct i2c_client *client,
1903 struct i2c_board_info *info)
1904 {
1905 int bank, vendor_id, device_id, expected, i2c_addr, config;
1906 struct i2c_adapter *adapter = client->adapter;
1907 unsigned short address = client->addr;
1908 const char *chip_name;
1909
1910 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1911 return -ENODEV;
1912 bank = i2c_smbus_read_byte_data(client, W83795_REG_BANKSEL);
1913 if (bank < 0 || (bank & 0x7c)) {
1914 dev_dbg(&adapter->dev,
1915 "w83795: Detection failed at addr 0x%02hx, check %s\n",
1916 address, "bank");
1917 return -ENODEV;
1918 }
1919
1920 /* Check Nuvoton vendor ID */
1921 vendor_id = i2c_smbus_read_byte_data(client, W83795_REG_VENDORID);
1922 expected = bank & 0x80 ? 0x5c : 0xa3;
1923 if (vendor_id != expected) {
1924 dev_dbg(&adapter->dev,
1925 "w83795: Detection failed at addr 0x%02hx, check %s\n",
1926 address, "vendor id");
1927 return -ENODEV;
1928 }
1929
1930 /* Check device ID */
1931 device_id = w83795_get_device_id(client) |
1932 (i2c_smbus_read_byte_data(client, W83795_REG_CHIPID) << 8);
1933 if ((device_id >> 4) != 0x795) {
1934 dev_dbg(&adapter->dev,
1935 "w83795: Detection failed at addr 0x%02hx, check %s\n",
1936 address, "device id\n");
1937 return -ENODEV;
1938 }
1939
1940 /*
1941 * If Nuvoton chip, address of chip and W83795_REG_I2C_ADDR
1942 * should match
1943 */
1944 if ((bank & 0x07) == 0) {
1945 i2c_addr = i2c_smbus_read_byte_data(client,
1946 W83795_REG_I2C_ADDR);
1947 if ((i2c_addr & 0x7f) != address) {
1948 dev_dbg(&adapter->dev,
1949 "w83795: Detection failed at addr 0x%02hx, "
1950 "check %s\n", address, "i2c addr");
1951 return -ENODEV;
1952 }
1953 }
1954
1955 /*
1956 * Check 795 chip type: 795G or 795ADG
1957 * Usually we don't write to chips during detection, but here we don't
1958 * quite have the choice; hopefully it's OK, we are about to return
1959 * success anyway
1960 */
1961 if ((bank & 0x07) != 0)
1962 i2c_smbus_write_byte_data(client, W83795_REG_BANKSEL,
1963 bank & ~0x07);
1964 config = i2c_smbus_read_byte_data(client, W83795_REG_CONFIG);
1965 if (config & W83795_REG_CONFIG_CONFIG48)
1966 chip_name = "w83795adg";
1967 else
1968 chip_name = "w83795g";
1969
1970 strscpy(info->type, chip_name, I2C_NAME_SIZE);
1971 dev_info(&adapter->dev, "Found %s rev. %c at 0x%02hx\n", chip_name,
1972 'A' + (device_id & 0xf), address);
1973
1974 return 0;
1975 }
1976
1977 #ifdef CONFIG_SENSORS_W83795_FANCTRL
1978 #define NUM_PWM_ATTRIBUTES ARRAY_SIZE(w83795_pwm[0])
1979 #define NUM_TEMP_ATTRIBUTES ARRAY_SIZE(w83795_temp[0])
1980 #else
1981 #define NUM_PWM_ATTRIBUTES 4
1982 #define NUM_TEMP_ATTRIBUTES 8
1983 #endif
1984
w83795_handle_files(struct device * dev,int (* fn)(struct device *,const struct device_attribute *))1985 static int w83795_handle_files(struct device *dev, int (*fn)(struct device *,
1986 const struct device_attribute *))
1987 {
1988 struct w83795_data *data = dev_get_drvdata(dev);
1989 int err, i, j;
1990
1991 for (i = 0; i < ARRAY_SIZE(w83795_in); i++) {
1992 if (!(data->has_in & (1 << i)))
1993 continue;
1994 for (j = 0; j < ARRAY_SIZE(w83795_in[0]); j++) {
1995 if (j == 4 && !data->enable_beep)
1996 continue;
1997 err = fn(dev, &w83795_in[i][j].dev_attr);
1998 if (err)
1999 return err;
2000 }
2001 }
2002
2003 for (i = 0; i < ARRAY_SIZE(w83795_fan); i++) {
2004 if (!(data->has_fan & (1 << i)))
2005 continue;
2006 for (j = 0; j < ARRAY_SIZE(w83795_fan[0]); j++) {
2007 if (j == 3 && !data->enable_beep)
2008 continue;
2009 err = fn(dev, &w83795_fan[i][j].dev_attr);
2010 if (err)
2011 return err;
2012 }
2013 }
2014
2015 for (i = 0; i < ARRAY_SIZE(w83795_tss); i++) {
2016 j = w83795_tss_useful(data, i);
2017 if (!j)
2018 continue;
2019 err = fn(dev, &w83795_tss[i].dev_attr);
2020 if (err)
2021 return err;
2022 }
2023
2024 for (i = 0; i < ARRAY_SIZE(sda_single_files); i++) {
2025 err = fn(dev, &sda_single_files[i].dev_attr);
2026 if (err)
2027 return err;
2028 }
2029
2030 if (data->enable_beep) {
2031 for (i = 0; i < ARRAY_SIZE(sda_beep_files); i++) {
2032 err = fn(dev, &sda_beep_files[i].dev_attr);
2033 if (err)
2034 return err;
2035 }
2036 }
2037
2038 for (i = 0; i < data->has_pwm; i++) {
2039 for (j = 0; j < NUM_PWM_ATTRIBUTES; j++) {
2040 err = fn(dev, &w83795_pwm[i][j].dev_attr);
2041 if (err)
2042 return err;
2043 }
2044 }
2045
2046 for (i = 0; i < ARRAY_SIZE(w83795_temp); i++) {
2047 if (!(data->has_temp & (1 << i)))
2048 continue;
2049 for (j = 0; j < NUM_TEMP_ATTRIBUTES; j++) {
2050 if (j == 7 && !data->enable_beep)
2051 continue;
2052 err = fn(dev, &w83795_temp[i][j].dev_attr);
2053 if (err)
2054 return err;
2055 }
2056 }
2057
2058 if (data->enable_dts) {
2059 for (i = 0; i < ARRAY_SIZE(w83795_dts); i++) {
2060 if (!(data->has_dts & (1 << i)))
2061 continue;
2062 for (j = 0; j < ARRAY_SIZE(w83795_dts[0]); j++) {
2063 if (j == 7 && !data->enable_beep)
2064 continue;
2065 err = fn(dev, &w83795_dts[i][j].dev_attr);
2066 if (err)
2067 return err;
2068 }
2069 }
2070 }
2071
2072 return 0;
2073 }
2074
2075 /* We need a wrapper that fits in w83795_handle_files */
device_remove_file_wrapper(struct device * dev,const struct device_attribute * attr)2076 static int device_remove_file_wrapper(struct device *dev,
2077 const struct device_attribute *attr)
2078 {
2079 device_remove_file(dev, attr);
2080 return 0;
2081 }
2082
w83795_check_dynamic_in_limits(struct i2c_client * client)2083 static void w83795_check_dynamic_in_limits(struct i2c_client *client)
2084 {
2085 struct w83795_data *data = i2c_get_clientdata(client);
2086 u8 vid_ctl;
2087 int i, err_max, err_min;
2088
2089 vid_ctl = w83795_read(client, W83795_REG_VID_CTRL);
2090
2091 /* Return immediately if VRM isn't configured */
2092 if ((vid_ctl & 0x07) == 0x00 || (vid_ctl & 0x07) == 0x07)
2093 return;
2094
2095 data->has_dyn_in = (vid_ctl >> 3) & 0x07;
2096 for (i = 0; i < 2; i++) {
2097 if (!(data->has_dyn_in & (1 << i)))
2098 continue;
2099
2100 /* Voltage limits in dynamic mode, switch to read-only */
2101 err_max = sysfs_chmod_file(&client->dev.kobj,
2102 &w83795_in[i][2].dev_attr.attr,
2103 S_IRUGO);
2104 err_min = sysfs_chmod_file(&client->dev.kobj,
2105 &w83795_in[i][3].dev_attr.attr,
2106 S_IRUGO);
2107 if (err_max || err_min)
2108 dev_warn(&client->dev,
2109 "Failed to set in%d limits read-only (%d, %d)\n",
2110 i, err_max, err_min);
2111 else
2112 dev_info(&client->dev,
2113 "in%d limits set dynamically from VID\n", i);
2114 }
2115 }
2116
2117 /* Check pins that can be used for either temperature or voltage monitoring */
w83795_apply_temp_config(struct w83795_data * data,u8 config,int temp_chan,int in_chan)2118 static void w83795_apply_temp_config(struct w83795_data *data, u8 config,
2119 int temp_chan, int in_chan)
2120 {
2121 /* config is a 2-bit value */
2122 switch (config) {
2123 case 0x2: /* Voltage monitoring */
2124 data->has_in |= 1 << in_chan;
2125 break;
2126 case 0x1: /* Thermal diode */
2127 if (temp_chan >= 4)
2128 break;
2129 data->temp_mode |= 1 << temp_chan;
2130 fallthrough;
2131 case 0x3: /* Thermistor */
2132 data->has_temp |= 1 << temp_chan;
2133 break;
2134 }
2135 }
2136
2137 static const struct i2c_device_id w83795_id[];
2138
w83795_probe(struct i2c_client * client)2139 static int w83795_probe(struct i2c_client *client)
2140 {
2141 int i;
2142 u8 tmp;
2143 struct device *dev = &client->dev;
2144 struct w83795_data *data;
2145 int err;
2146
2147 data = devm_kzalloc(dev, sizeof(struct w83795_data), GFP_KERNEL);
2148 if (!data)
2149 return -ENOMEM;
2150
2151 i2c_set_clientdata(client, data);
2152 data->chip_type = i2c_match_id(w83795_id, client)->driver_data;
2153 data->bank = i2c_smbus_read_byte_data(client, W83795_REG_BANKSEL);
2154 mutex_init(&data->update_lock);
2155
2156 /* Initialize the chip */
2157 w83795_init_client(client);
2158
2159 /* Check which voltages and fans are present */
2160 data->has_in = w83795_read(client, W83795_REG_VOLT_CTRL1)
2161 | (w83795_read(client, W83795_REG_VOLT_CTRL2) << 8);
2162 data->has_fan = w83795_read(client, W83795_REG_FANIN_CTRL1)
2163 | (w83795_read(client, W83795_REG_FANIN_CTRL2) << 8);
2164
2165 /* Check which analog temperatures and extra voltages are present */
2166 tmp = w83795_read(client, W83795_REG_TEMP_CTRL1);
2167 if (tmp & 0x20)
2168 data->enable_dts = 1;
2169 w83795_apply_temp_config(data, (tmp >> 2) & 0x3, 5, 16);
2170 w83795_apply_temp_config(data, tmp & 0x3, 4, 15);
2171 tmp = w83795_read(client, W83795_REG_TEMP_CTRL2);
2172 w83795_apply_temp_config(data, tmp >> 6, 3, 20);
2173 w83795_apply_temp_config(data, (tmp >> 4) & 0x3, 2, 19);
2174 w83795_apply_temp_config(data, (tmp >> 2) & 0x3, 1, 18);
2175 w83795_apply_temp_config(data, tmp & 0x3, 0, 17);
2176
2177 /* Check DTS enable status */
2178 if (data->enable_dts) {
2179 if (1 & w83795_read(client, W83795_REG_DTSC))
2180 data->enable_dts |= 2;
2181 data->has_dts = w83795_read(client, W83795_REG_DTSE);
2182 }
2183
2184 /* Report PECI Tbase values */
2185 if (data->enable_dts == 1) {
2186 for (i = 0; i < 8; i++) {
2187 if (!(data->has_dts & (1 << i)))
2188 continue;
2189 tmp = w83795_read(client, W83795_REG_PECI_TBASE(i));
2190 dev_info(&client->dev,
2191 "PECI agent %d Tbase temperature: %u\n",
2192 i + 1, (unsigned int)tmp & 0x7f);
2193 }
2194 }
2195
2196 data->has_gain = w83795_read(client, W83795_REG_VMIGB_CTRL) & 0x0f;
2197
2198 /* pwm and smart fan */
2199 if (data->chip_type == w83795g)
2200 data->has_pwm = 8;
2201 else
2202 data->has_pwm = 2;
2203
2204 /* Check if BEEP pin is available */
2205 if (data->chip_type == w83795g) {
2206 /* The W83795G has a dedicated BEEP pin */
2207 data->enable_beep = 1;
2208 } else {
2209 /*
2210 * The W83795ADG has a shared pin for OVT# and BEEP, so you
2211 * can't have both
2212 */
2213 tmp = w83795_read(client, W83795_REG_OVT_CFG);
2214 if ((tmp & OVT_CFG_SEL) == 0)
2215 data->enable_beep = 1;
2216 }
2217
2218 err = w83795_handle_files(dev, device_create_file);
2219 if (err)
2220 goto exit_remove;
2221
2222 if (data->chip_type == w83795g)
2223 w83795_check_dynamic_in_limits(client);
2224
2225 data->hwmon_dev = hwmon_device_register(dev);
2226 if (IS_ERR(data->hwmon_dev)) {
2227 err = PTR_ERR(data->hwmon_dev);
2228 goto exit_remove;
2229 }
2230
2231 return 0;
2232
2233 exit_remove:
2234 w83795_handle_files(dev, device_remove_file_wrapper);
2235 return err;
2236 }
2237
w83795_remove(struct i2c_client * client)2238 static void w83795_remove(struct i2c_client *client)
2239 {
2240 struct w83795_data *data = i2c_get_clientdata(client);
2241
2242 hwmon_device_unregister(data->hwmon_dev);
2243 w83795_handle_files(&client->dev, device_remove_file_wrapper);
2244 }
2245
2246
2247 static const struct i2c_device_id w83795_id[] = {
2248 { "w83795g", w83795g },
2249 { "w83795adg", w83795adg },
2250 { }
2251 };
2252 MODULE_DEVICE_TABLE(i2c, w83795_id);
2253
2254 static struct i2c_driver w83795_driver = {
2255 .driver = {
2256 .name = "w83795",
2257 },
2258 .probe = w83795_probe,
2259 .remove = w83795_remove,
2260 .id_table = w83795_id,
2261
2262 .class = I2C_CLASS_HWMON,
2263 .detect = w83795_detect,
2264 .address_list = normal_i2c,
2265 };
2266
2267 module_i2c_driver(w83795_driver);
2268
2269 MODULE_AUTHOR("Wei Song, Jean Delvare <jdelvare@suse.de>");
2270 MODULE_DESCRIPTION("W83795G/ADG hardware monitoring driver");
2271 MODULE_LICENSE("GPL");
2272
