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befs: Validate length of long symbolic links.
[linux-2.6/kvm.git] / drivers / hwmon / w83795.c
blob845232d7f611f0e69d9696f084dbfc2cdfbe0ccc
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 */
40 static const unsigned short normal_i2c[] = {
41 0x2c, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END
42 };
43
44
45 static int reset;
46 module_param(reset, bool, 0);
47 MODULE_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 /* only crit and crit_hyst affect real-time alarm status
76 * current crit crit_hyst warn warn_hyst */
77 static const u16 W83795_REG_TEMP[][5] = {
78 {0x21, 0x96, 0x97, 0x98, 0x99}, /* TD1/TR1 */
79 {0x22, 0x9a, 0x9b, 0x9c, 0x9d}, /* TD2/TR2 */
80 {0x23, 0x9e, 0x9f, 0xa0, 0xa1}, /* TD3/TR3 */
81 {0x24, 0xa2, 0xa3, 0xa4, 0xa5}, /* TD4/TR4 */
82 {0x1f, 0xa6, 0xa7, 0xa8, 0xa9}, /* TR5 */
83 {0x20, 0xaa, 0xab, 0xac, 0xad}, /* TR6 */
84 };
85
86 #define IN_READ 0
87 #define IN_MAX 1
88 #define IN_LOW 2
89 static const u16 W83795_REG_IN[][3] = {
90 /* Current, HL, LL */
91 {0x10, 0x70, 0x71}, /* VSEN1 */
92 {0x11, 0x72, 0x73}, /* VSEN2 */
93 {0x12, 0x74, 0x75}, /* VSEN3 */
94 {0x13, 0x76, 0x77}, /* VSEN4 */
95 {0x14, 0x78, 0x79}, /* VSEN5 */
96 {0x15, 0x7a, 0x7b}, /* VSEN6 */
97 {0x16, 0x7c, 0x7d}, /* VSEN7 */
98 {0x17, 0x7e, 0x7f}, /* VSEN8 */
99 {0x18, 0x80, 0x81}, /* VSEN9 */
100 {0x19, 0x82, 0x83}, /* VSEN10 */
101 {0x1A, 0x84, 0x85}, /* VSEN11 */
102 {0x1B, 0x86, 0x87}, /* VTT */
103 {0x1C, 0x88, 0x89}, /* 3VDD */
104 {0x1D, 0x8a, 0x8b}, /* 3VSB */
105 {0x1E, 0x8c, 0x8d}, /* VBAT */
106 {0x1F, 0xa6, 0xa7}, /* VSEN12 */
107 {0x20, 0xaa, 0xab}, /* VSEN13 */
108 {0x21, 0x96, 0x97}, /* VSEN14 */
109 {0x22, 0x9a, 0x9b}, /* VSEN15 */
110 {0x23, 0x9e, 0x9f}, /* VSEN16 */
111 {0x24, 0xa2, 0xa3}, /* VSEN17 */
112 };
113 #define W83795_REG_VRLSB 0x3C
114
115 static const u8 W83795_REG_IN_HL_LSB[] = {
116 0x8e, /* VSEN1-4 */
117 0x90, /* VSEN5-8 */
118 0x92, /* VSEN9-11 */
119 0x94, /* VTT, 3VDD, 3VSB, 3VBAT */
120 0xa8, /* VSEN12 */
121 0xac, /* VSEN13 */
122 0x98, /* VSEN14 */
123 0x9c, /* VSEN15 */
124 0xa0, /* VSEN16 */
125 0xa4, /* VSEN17 */
126 };
127
128 #define IN_LSB_REG(index, type) \
129 (((type) == 1) ? W83795_REG_IN_HL_LSB[(index)] \
130 : (W83795_REG_IN_HL_LSB[(index)] + 1))
131
132 #define IN_LSB_SHIFT 0
133 #define IN_LSB_IDX 1
134 static const u8 IN_LSB_SHIFT_IDX[][2] = {
135 /* High/Low LSB shift, LSB No. */
136 {0x00, 0x00}, /* VSEN1 */
137 {0x02, 0x00}, /* VSEN2 */
138 {0x04, 0x00}, /* VSEN3 */
139 {0x06, 0x00}, /* VSEN4 */
140 {0x00, 0x01}, /* VSEN5 */
141 {0x02, 0x01}, /* VSEN6 */
142 {0x04, 0x01}, /* VSEN7 */
143 {0x06, 0x01}, /* VSEN8 */
144 {0x00, 0x02}, /* VSEN9 */
145 {0x02, 0x02}, /* VSEN10 */
146 {0x04, 0x02}, /* VSEN11 */
147 {0x00, 0x03}, /* VTT */
148 {0x02, 0x03}, /* 3VDD */
149 {0x04, 0x03}, /* 3VSB */
150 {0x06, 0x03}, /* VBAT */
151 {0x06, 0x04}, /* VSEN12 */
152 {0x06, 0x05}, /* VSEN13 */
153 {0x06, 0x06}, /* VSEN14 */
154 {0x06, 0x07}, /* VSEN15 */
155 {0x06, 0x08}, /* VSEN16 */
156 {0x06, 0x09}, /* VSEN17 */
157 };
158
159
160 #define W83795_REG_FAN(index) (0x2E + (index))
161 #define W83795_REG_FAN_MIN_HL(index) (0xB6 + (index))
162 #define W83795_REG_FAN_MIN_LSB(index) (0xC4 + (index) / 2)
163 #define W83795_REG_FAN_MIN_LSB_SHIFT(index) \
164 (((index) & 1) ? 4 : 0)
165
166 #define W83795_REG_VID_CTRL 0x6A
167
168 #define W83795_REG_ALARM_CTRL 0x40
169 #define ALARM_CTRL_RTSACS (1 << 7)
170 #define W83795_REG_ALARM(index) (0x41 + (index))
171 #define W83795_REG_CLR_CHASSIS 0x4D
172 #define W83795_REG_BEEP(index) (0x50 + (index))
173
174 #define W83795_REG_OVT_CFG 0x58
175 #define OVT_CFG_SEL (1 << 7)
176
177
178 #define W83795_REG_FCMS1 0x201
179 #define W83795_REG_FCMS2 0x208
180 #define W83795_REG_TFMR(index) (0x202 + (index))
181 #define W83795_REG_FOMC 0x20F
182
183 #define W83795_REG_TSS(index) (0x209 + (index))
184
185 #define TSS_MAP_RESERVED 0xff
186 static const u8 tss_map[4][6] = {
187 { 0, 1, 2, 3, 4, 5},
188 { 6, 7, 8, 9, 0, 1},
189 {10, 11, 12, 13, 2, 3},
190 { 4, 5, 4, 5, TSS_MAP_RESERVED, TSS_MAP_RESERVED},
191 };
192
193 #define PWM_OUTPUT 0
194 #define PWM_FREQ 1
195 #define PWM_START 2
196 #define PWM_NONSTOP 3
197 #define PWM_STOP_TIME 4
198 #define W83795_REG_PWM(index, nr) (0x210 + (nr) * 8 + (index))
199
200 #define W83795_REG_FTSH(index) (0x240 + (index) * 2)
201 #define W83795_REG_FTSL(index) (0x241 + (index) * 2)
202 #define W83795_REG_TFTS 0x250
203
204 #define TEMP_PWM_TTTI 0
205 #define TEMP_PWM_CTFS 1
206 #define TEMP_PWM_HCT 2
207 #define TEMP_PWM_HOT 3
208 #define W83795_REG_TTTI(index) (0x260 + (index))
209 #define W83795_REG_CTFS(index) (0x268 + (index))
210 #define W83795_REG_HT(index) (0x270 + (index))
211
212 #define SF4_TEMP 0
213 #define SF4_PWM 1
214 #define W83795_REG_SF4_TEMP(temp_num, index) \
215 (0x280 + 0x10 * (temp_num) + (index))
216 #define W83795_REG_SF4_PWM(temp_num, index) \
217 (0x288 + 0x10 * (temp_num) + (index))
218
219 #define W83795_REG_DTSC 0x301
220 #define W83795_REG_DTSE 0x302
221 #define W83795_REG_DTS(index) (0x26 + (index))
222 #define W83795_REG_PECI_TBASE(index) (0x320 + (index))
223
224 #define DTS_CRIT 0
225 #define DTS_CRIT_HYST 1
226 #define DTS_WARN 2
227 #define DTS_WARN_HYST 3
228 #define W83795_REG_DTS_EXT(index) (0xB2 + (index))
229
230 #define SETUP_PWM_DEFAULT 0
231 #define SETUP_PWM_UPTIME 1
232 #define SETUP_PWM_DOWNTIME 2
233 #define W83795_REG_SETUP_PWM(index) (0x20C + (index))
234
235 static inline u16 in_from_reg(u8 index, u16 val)
236 {
237 /* 3VDD, 3VSB and VBAT: 6 mV/bit; other inputs: 2 mV/bit */
238 if (index >= 12 && index <= 14)
239 return val * 6;
240 else
241 return val * 2;
242 }
243
244 static inline u16 in_to_reg(u8 index, u16 val)
245 {
246 if (index >= 12 && index <= 14)
247 return val / 6;
248 else
249 return val / 2;
250 }
251
252 static inline unsigned long fan_from_reg(u16 val)
253 {
254 if ((val == 0xfff) || (val == 0))
255 return 0;
256 return 1350000UL / val;
257 }
258
259 static inline u16 fan_to_reg(long rpm)
260 {
261 if (rpm <= 0)
262 return 0x0fff;
263 return SENSORS_LIMIT((1350000 + (rpm >> 1)) / rpm, 1, 0xffe);
264 }
265
266 static inline unsigned long time_from_reg(u8 reg)
267 {
268 return reg * 100;
269 }
270
271 static inline u8 time_to_reg(unsigned long val)
272 {
273 return SENSORS_LIMIT((val + 50) / 100, 0, 0xff);
274 }
275
276 static inline long temp_from_reg(s8 reg)
277 {
278 return reg * 1000;
279 }
280
281 static inline s8 temp_to_reg(long val, s8 min, s8 max)
282 {
283 return SENSORS_LIMIT(val / 1000, min, max);
284 }
285
286 static const u16 pwm_freq_cksel0[16] = {
287 1024, 512, 341, 256, 205, 171, 146, 128,
288 85, 64, 32, 16, 8, 4, 2, 1
289 };
290
291 static unsigned int pwm_freq_from_reg(u8 reg, u16 clkin)
292 {
293 unsigned long base_clock;
294
295 if (reg & 0x80) {
296 base_clock = clkin * 1000 / ((clkin == 48000) ? 384 : 256);
297 return base_clock / ((reg & 0x7f) + 1);
298 } else
299 return pwm_freq_cksel0[reg & 0x0f];
300 }
301
302 static u8 pwm_freq_to_reg(unsigned long val, u16 clkin)
303 {
304 unsigned long base_clock;
305 u8 reg0, reg1;
306 unsigned long best0, best1;
307
308 /* Best fit for cksel = 0 */
309 for (reg0 = 0; reg0 < ARRAY_SIZE(pwm_freq_cksel0) - 1; reg0++) {
310 if (val > (pwm_freq_cksel0[reg0] +
311 pwm_freq_cksel0[reg0 + 1]) / 2)
312 break;
313 }
314 if (val < 375) /* cksel = 1 can't beat this */
315 return reg0;
316 best0 = pwm_freq_cksel0[reg0];
317
318 /* Best fit for cksel = 1 */
319 base_clock = clkin * 1000 / ((clkin == 48000) ? 384 : 256);
320 reg1 = SENSORS_LIMIT(DIV_ROUND_CLOSEST(base_clock, val), 1, 128);
321 best1 = base_clock / reg1;
322 reg1 = 0x80 | (reg1 - 1);
323
324 /* Choose the closest one */
325 if (abs(val - best0) > abs(val - best1))
326 return reg1;
327 else
328 return reg0;
329 }
330
331 enum chip_types {w83795g, w83795adg};
332
333 struct w83795_data {
334 struct device *hwmon_dev;
335 struct mutex update_lock;
336 unsigned long last_updated; /* In jiffies */
337 enum chip_types chip_type;
338
339 u8 bank;
340
341 u32 has_in; /* Enable monitor VIN or not */
342 u8 has_dyn_in; /* Only in2-0 can have this */
343 u16 in[21][3]; /* Register value, read/high/low */
344 u8 in_lsb[10][3]; /* LSB Register value, high/low */
345 u8 has_gain; /* has gain: in17-20 * 8 */
346
347 u16 has_fan; /* Enable fan14-1 or not */
348 u16 fan[14]; /* Register value combine */
349 u16 fan_min[14]; /* Register value combine */
350
351 u8 has_temp; /* Enable monitor temp6-1 or not */
352 s8 temp[6][5]; /* current, crit, crit_hyst, warn, warn_hyst */
353 u8 temp_read_vrlsb[6];
354 u8 temp_mode; /* Bit vector, 0 = TR, 1 = TD */
355 u8 temp_src[3]; /* Register value */
356
357 u8 enable_dts; /* Enable PECI and SB-TSI,
358 * bit 0: =1 enable, =0 disable,
359 * bit 1: =1 AMD SB-TSI, =0 Intel PECI */
360 u8 has_dts; /* Enable monitor DTS temp */
361 s8 dts[8]; /* Register value */
362 u8 dts_read_vrlsb[8]; /* Register value */
363 s8 dts_ext[4]; /* Register value */
364
365 u8 has_pwm; /* 795g supports 8 pwm, 795adg only supports 2,
366 * no config register, only affected by chip
367 * type */
368 u8 pwm[8][5]; /* Register value, output, freq, start,
369 * non stop, stop time */
370 u16 clkin; /* CLKIN frequency in kHz */
371 u8 pwm_fcms[2]; /* Register value */
372 u8 pwm_tfmr[6]; /* Register value */
373 u8 pwm_fomc; /* Register value */
374
375 u16 target_speed[8]; /* Register value, target speed for speed
376 * cruise */
377 u8 tol_speed; /* tolerance of target speed */
378 u8 pwm_temp[6][4]; /* TTTI, CTFS, HCT, HOT */
379 u8 sf4_reg[6][2][7]; /* 6 temp, temp/dcpwm, 7 registers */
380
381 u8 setup_pwm[3]; /* Register value */
382
383 u8 alarms[6]; /* Register value */
384 u8 enable_beep;
385 u8 beeps[6]; /* Register value */
386
387 char valid;
388 char valid_limits;
389 char valid_pwm_config;
390 };
391
392 /*
393 * Hardware access
394 * We assume that nobdody can change the bank outside the driver.
395 */
396
397 /* Must be called with data->update_lock held, except during initialization */
398 static int w83795_set_bank(struct i2c_client *client, u8 bank)
399 {
400 struct w83795_data *data = i2c_get_clientdata(client);
401 int err;
402
403 /* If the same bank is already set, nothing to do */
404 if ((data->bank & 0x07) == bank)
405 return 0;
406
407 /* Change to new bank, preserve all other bits */
408 bank |= data->bank & ~0x07;
409 err = i2c_smbus_write_byte_data(client, W83795_REG_BANKSEL, bank);
410 if (err < 0) {
411 dev_err(&client->dev,
412 "Failed to set bank to %d, err %d\n",
413 (int)bank, err);
414 return err;
415 }
416 data->bank = bank;
417
418 return 0;
419 }
420
421 /* Must be called with data->update_lock held, except during initialization */
422 static u8 w83795_read(struct i2c_client *client, u16 reg)
423 {
424 int err;
425
426 err = w83795_set_bank(client, reg >> 8);
427 if (err < 0)
428 return 0x00; /* Arbitrary */
429
430 err = i2c_smbus_read_byte_data(client, reg & 0xff);
431 if (err < 0) {
432 dev_err(&client->dev,
433 "Failed to read from register 0x%03x, err %d\n",
434 (int)reg, err);
435 return 0x00; /* Arbitrary */
436 }
437 return err;
438 }
439
440 /* Must be called with data->update_lock held, except during initialization */
441 static int w83795_write(struct i2c_client *client, u16 reg, u8 value)
442 {
443 int err;
444
445 err = w83795_set_bank(client, reg >> 8);
446 if (err < 0)
447 return err;
448
449 err = i2c_smbus_write_byte_data(client, reg & 0xff, value);
450 if (err < 0)
451 dev_err(&client->dev,
452 "Failed to write to register 0x%03x, err %d\n",
453 (int)reg, err);
454 return err;
455 }
456
457 static void w83795_update_limits(struct i2c_client *client)
458 {
459 struct w83795_data *data = i2c_get_clientdata(client);
460 int i, limit;
461 u8 lsb;
462
463 /* Read the voltage limits */
464 for (i = 0; i < ARRAY_SIZE(data->in); i++) {
465 if (!(data->has_in & (1 << i)))
466 continue;
467 data->in[i][IN_MAX] =
468 w83795_read(client, W83795_REG_IN[i][IN_MAX]);
469 data->in[i][IN_LOW] =
470 w83795_read(client, W83795_REG_IN[i][IN_LOW]);
471 }
472 for (i = 0; i < ARRAY_SIZE(data->in_lsb); i++) {
473 if ((i == 2 && data->chip_type == w83795adg) ||
474 (i >= 4 && !(data->has_in & (1 << (i + 11)))))
475 continue;
476 data->in_lsb[i][IN_MAX] =
477 w83795_read(client, IN_LSB_REG(i, IN_MAX));
478 data->in_lsb[i][IN_LOW] =
479 w83795_read(client, IN_LSB_REG(i, IN_LOW));
480 }
481
482 /* Read the fan limits */
483 lsb = 0; /* Silent false gcc warning */
484 for (i = 0; i < ARRAY_SIZE(data->fan); i++) {
485 /* Each register contains LSB for 2 fans, but we want to
486 * read it only once to save time */
487 if ((i & 1) == 0 && (data->has_fan & (3 << i)))
488 lsb = w83795_read(client, W83795_REG_FAN_MIN_LSB(i));
489
490 if (!(data->has_fan & (1 << i)))
491 continue;
492 data->fan_min[i] =
493 w83795_read(client, W83795_REG_FAN_MIN_HL(i)) << 4;
494 data->fan_min[i] |=
495 (lsb >> W83795_REG_FAN_MIN_LSB_SHIFT(i)) & 0x0F;
496 }
497
498 /* Read the temperature limits */
499 for (i = 0; i < ARRAY_SIZE(data->temp); i++) {
500 if (!(data->has_temp & (1 << i)))
501 continue;
502 for (limit = TEMP_CRIT; limit <= TEMP_WARN_HYST; limit++)
503 data->temp[i][limit] =
504 w83795_read(client, W83795_REG_TEMP[i][limit]);
505 }
506
507 /* Read the DTS limits */
508 if (data->enable_dts) {
509 for (limit = DTS_CRIT; limit <= DTS_WARN_HYST; limit++)
510 data->dts_ext[limit] =
511 w83795_read(client, W83795_REG_DTS_EXT(limit));
512 }
513
514 /* Read beep settings */
515 if (data->enable_beep) {
516 for (i = 0; i < ARRAY_SIZE(data->beeps); i++)
517 data->beeps[i] =
518 w83795_read(client, W83795_REG_BEEP(i));
519 }
520
521 data->valid_limits = 1;
522 }
523
524 static struct w83795_data *w83795_update_pwm_config(struct device *dev)
525 {
526 struct i2c_client *client = to_i2c_client(dev);
527 struct w83795_data *data = i2c_get_clientdata(client);
528 int i, tmp;
529
530 mutex_lock(&data->update_lock);
531
532 if (data->valid_pwm_config)
533 goto END;
534
535 /* Read temperature source selection */
536 for (i = 0; i < ARRAY_SIZE(data->temp_src); i++)
537 data->temp_src[i] = w83795_read(client, W83795_REG_TSS(i));
538
539 /* Read automatic fan speed control settings */
540 data->pwm_fcms[0] = w83795_read(client, W83795_REG_FCMS1);
541 data->pwm_fcms[1] = w83795_read(client, W83795_REG_FCMS2);
542 for (i = 0; i < ARRAY_SIZE(data->pwm_tfmr); i++)
543 data->pwm_tfmr[i] = w83795_read(client, W83795_REG_TFMR(i));
544 data->pwm_fomc = w83795_read(client, W83795_REG_FOMC);
545 for (i = 0; i < data->has_pwm; i++) {
546 for (tmp = PWM_FREQ; tmp <= PWM_STOP_TIME; tmp++)
547 data->pwm[i][tmp] =
548 w83795_read(client, W83795_REG_PWM(i, tmp));
549 }
550 for (i = 0; i < ARRAY_SIZE(data->target_speed); i++) {
551 data->target_speed[i] =
552 w83795_read(client, W83795_REG_FTSH(i)) << 4;
553 data->target_speed[i] |=
554 w83795_read(client, W83795_REG_FTSL(i)) >> 4;
555 }
556 data->tol_speed = w83795_read(client, W83795_REG_TFTS) & 0x3f;
557
558 for (i = 0; i < ARRAY_SIZE(data->pwm_temp); i++) {
559 data->pwm_temp[i][TEMP_PWM_TTTI] =
560 w83795_read(client, W83795_REG_TTTI(i)) & 0x7f;
561 data->pwm_temp[i][TEMP_PWM_CTFS] =
562 w83795_read(client, W83795_REG_CTFS(i));
563 tmp = w83795_read(client, W83795_REG_HT(i));
564 data->pwm_temp[i][TEMP_PWM_HCT] = tmp >> 4;
565 data->pwm_temp[i][TEMP_PWM_HOT] = tmp & 0x0f;
566 }
567
568 /* Read SmartFanIV trip points */
569 for (i = 0; i < ARRAY_SIZE(data->sf4_reg); i++) {
570 for (tmp = 0; tmp < 7; tmp++) {
571 data->sf4_reg[i][SF4_TEMP][tmp] =
572 w83795_read(client,
573 W83795_REG_SF4_TEMP(i, tmp));
574 data->sf4_reg[i][SF4_PWM][tmp] =
575 w83795_read(client, W83795_REG_SF4_PWM(i, tmp));
576 }
577 }
578
579 /* Read setup PWM */
580 for (i = 0; i < ARRAY_SIZE(data->setup_pwm); i++)
581 data->setup_pwm[i] =
582 w83795_read(client, W83795_REG_SETUP_PWM(i));
583
584 data->valid_pwm_config = 1;
585
586 END:
587 mutex_unlock(&data->update_lock);
588 return data;
589 }
590
591 static struct w83795_data *w83795_update_device(struct device *dev)
592 {
593 struct i2c_client *client = to_i2c_client(dev);
594 struct w83795_data *data = i2c_get_clientdata(client);
595 u16 tmp;
596 u8 intrusion;
597 int i;
598
599 mutex_lock(&data->update_lock);
600
601 if (!data->valid_limits)
602 w83795_update_limits(client);
603
604 if (!(time_after(jiffies, data->last_updated + HZ * 2)
605 || !data->valid))
606 goto END;
607
608 /* Update the voltages value */
609 for (i = 0; i < ARRAY_SIZE(data->in); i++) {
610 if (!(data->has_in & (1 << i)))
611 continue;
612 tmp = w83795_read(client, W83795_REG_IN[i][IN_READ]) << 2;
613 tmp |= w83795_read(client, W83795_REG_VRLSB) >> 6;
614 data->in[i][IN_READ] = tmp;
615 }
616
617 /* in0-2 can have dynamic limits (W83795G only) */
618 if (data->has_dyn_in) {
619 u8 lsb_max = w83795_read(client, IN_LSB_REG(0, IN_MAX));
620 u8 lsb_low = w83795_read(client, IN_LSB_REG(0, IN_LOW));
621
622 for (i = 0; i < 3; i++) {
623 if (!(data->has_dyn_in & (1 << i)))
624 continue;
625 data->in[i][IN_MAX] =
626 w83795_read(client, W83795_REG_IN[i][IN_MAX]);
627 data->in[i][IN_LOW] =
628 w83795_read(client, W83795_REG_IN[i][IN_LOW]);
629 data->in_lsb[i][IN_MAX] = (lsb_max >> (2 * i)) & 0x03;
630 data->in_lsb[i][IN_LOW] = (lsb_low >> (2 * i)) & 0x03;
631 }
632 }
633
634 /* Update fan */
635 for (i = 0; i < ARRAY_SIZE(data->fan); i++) {
636 if (!(data->has_fan & (1 << i)))
637 continue;
638 data->fan[i] = w83795_read(client, W83795_REG_FAN(i)) << 4;
639 data->fan[i] |= w83795_read(client, W83795_REG_VRLSB) >> 4;
640 }
641
642 /* Update temperature */
643 for (i = 0; i < ARRAY_SIZE(data->temp); i++) {
644 data->temp[i][TEMP_READ] =
645 w83795_read(client, W83795_REG_TEMP[i][TEMP_READ]);
646 data->temp_read_vrlsb[i] =
647 w83795_read(client, W83795_REG_VRLSB);
648 }
649
650 /* Update dts temperature */
651 if (data->enable_dts) {
652 for (i = 0; i < ARRAY_SIZE(data->dts); i++) {
653 if (!(data->has_dts & (1 << i)))
654 continue;
655 data->dts[i] =
656 w83795_read(client, W83795_REG_DTS(i));
657 data->dts_read_vrlsb[i] =
658 w83795_read(client, W83795_REG_VRLSB);
659 }
660 }
661
662 /* Update pwm output */
663 for (i = 0; i < data->has_pwm; i++) {
664 data->pwm[i][PWM_OUTPUT] =
665 w83795_read(client, W83795_REG_PWM(i, PWM_OUTPUT));
666 }
667
668 /* Update intrusion and alarms
669 * It is important to read intrusion first, because reading from
670 * register SMI STS6 clears the interrupt status temporarily. */
671 tmp = w83795_read(client, W83795_REG_ALARM_CTRL);
672 /* Switch to interrupt status for intrusion if needed */
673 if (tmp & ALARM_CTRL_RTSACS)
674 w83795_write(client, W83795_REG_ALARM_CTRL,
675 tmp & ~ALARM_CTRL_RTSACS);
676 intrusion = w83795_read(client, W83795_REG_ALARM(5)) & (1 << 6);
677 /* Switch to real-time alarms */
678 w83795_write(client, W83795_REG_ALARM_CTRL, tmp | ALARM_CTRL_RTSACS);
679 for (i = 0; i < ARRAY_SIZE(data->alarms); i++)
680 data->alarms[i] = w83795_read(client, W83795_REG_ALARM(i));
681 data->alarms[5] |= intrusion;
682 /* Restore original configuration if needed */
683 if (!(tmp & ALARM_CTRL_RTSACS))
684 w83795_write(client, W83795_REG_ALARM_CTRL,
685 tmp & ~ALARM_CTRL_RTSACS);
686
687 data->last_updated = jiffies;
688 data->valid = 1;
689
690 END:
691 mutex_unlock(&data->update_lock);
692 return data;
693 }
694
695 /*
696 * Sysfs attributes
697 */
698
699 #define ALARM_STATUS 0
700 #define BEEP_ENABLE 1
701 static ssize_t
702 show_alarm_beep(struct device *dev, struct device_attribute *attr, char *buf)
703 {
704 struct w83795_data *data = w83795_update_device(dev);
705 struct sensor_device_attribute_2 *sensor_attr =
706 to_sensor_dev_attr_2(attr);
707 int nr = sensor_attr->nr;
708 int index = sensor_attr->index >> 3;
709 int bit = sensor_attr->index & 0x07;
710 u8 val;
711
712 if (nr == ALARM_STATUS)
713 val = (data->alarms[index] >> bit) & 1;
714 else /* BEEP_ENABLE */
715 val = (data->beeps[index] >> bit) & 1;
716
717 return sprintf(buf, "%u\n", val);
718 }
719
720 static ssize_t
721 store_beep(struct device *dev, struct device_attribute *attr,
722 const char *buf, size_t count)
723 {
724 struct i2c_client *client = to_i2c_client(dev);
725 struct w83795_data *data = i2c_get_clientdata(client);
726 struct sensor_device_attribute_2 *sensor_attr =
727 to_sensor_dev_attr_2(attr);
728 int index = sensor_attr->index >> 3;
729 int shift = sensor_attr->index & 0x07;
730 u8 beep_bit = 1 << shift;
731 unsigned long val;
732
733 if (strict_strtoul(buf, 10, &val) < 0)
734 return -EINVAL;
735 if (val != 0 && val != 1)
736 return -EINVAL;
737
738 mutex_lock(&data->update_lock);
739 data->beeps[index] = w83795_read(client, W83795_REG_BEEP(index));
740 data->beeps[index] &= ~beep_bit;
741 data->beeps[index] |= val << shift;
742 w83795_write(client, W83795_REG_BEEP(index), data->beeps[index]);
743 mutex_unlock(&data->update_lock);
744
745 return count;
746 }
747
748 /* Write 0 to clear chassis alarm */
749 static ssize_t
750 store_chassis_clear(struct device *dev,
751 struct device_attribute *attr, const char *buf,
752 size_t count)
753 {
754 struct i2c_client *client = to_i2c_client(dev);
755 struct w83795_data *data = i2c_get_clientdata(client);
756 unsigned long val;
757
758 if (strict_strtoul(buf, 10, &val) < 0 || val != 0)
759 return -EINVAL;
760
761 mutex_lock(&data->update_lock);
762 val = w83795_read(client, W83795_REG_CLR_CHASSIS);
763 val |= 0x80;
764 w83795_write(client, W83795_REG_CLR_CHASSIS, val);
765
766 /* Clear status and force cache refresh */
767 w83795_read(client, W83795_REG_ALARM(5));
768 data->valid = 0;
769 mutex_unlock(&data->update_lock);
770 return count;
771 }
772
773 #define FAN_INPUT 0
774 #define FAN_MIN 1
775 static ssize_t
776 show_fan(struct device *dev, struct device_attribute *attr, char *buf)
777 {
778 struct sensor_device_attribute_2 *sensor_attr =
779 to_sensor_dev_attr_2(attr);
780 int nr = sensor_attr->nr;
781 int index = sensor_attr->index;
782 struct w83795_data *data = w83795_update_device(dev);
783 u16 val;
784
785 if (nr == FAN_INPUT)
786 val = data->fan[index] & 0x0fff;
787 else
788 val = data->fan_min[index] & 0x0fff;
789
790 return sprintf(buf, "%lu\n", fan_from_reg(val));
791 }
792
793 static ssize_t
794 store_fan_min(struct device *dev, struct device_attribute *attr,
795 const char *buf, size_t count)
796 {
797 struct sensor_device_attribute_2 *sensor_attr =
798 to_sensor_dev_attr_2(attr);
799 int index = sensor_attr->index;
800 struct i2c_client *client = to_i2c_client(dev);
801 struct w83795_data *data = i2c_get_clientdata(client);
802 unsigned long val;
803
804 if (strict_strtoul(buf, 10, &val))
805 return -EINVAL;
806 val = fan_to_reg(val);
807
808 mutex_lock(&data->update_lock);
809 data->fan_min[index] = val;
810 w83795_write(client, W83795_REG_FAN_MIN_HL(index), (val >> 4) & 0xff);
811 val &= 0x0f;
812 if (index & 1) {
813 val <<= 4;
814 val |= w83795_read(client, W83795_REG_FAN_MIN_LSB(index))
815 & 0x0f;
816 } else {
817 val |= w83795_read(client, W83795_REG_FAN_MIN_LSB(index))
818 & 0xf0;
819 }
820 w83795_write(client, W83795_REG_FAN_MIN_LSB(index), val & 0xff);
821 mutex_unlock(&data->update_lock);
822
823 return count;
824 }
825
826 static ssize_t
827 show_pwm(struct device *dev, struct device_attribute *attr, char *buf)
828 {
829 struct w83795_data *data;
830 struct sensor_device_attribute_2 *sensor_attr =
831 to_sensor_dev_attr_2(attr);
832 int nr = sensor_attr->nr;
833 int index = sensor_attr->index;
834 unsigned int val;
835
836 data = nr == PWM_OUTPUT ? w83795_update_device(dev)
837 : w83795_update_pwm_config(dev);
838
839 switch (nr) {
840 case PWM_STOP_TIME:
841 val = time_from_reg(data->pwm[index][nr]);
842 break;
843 case PWM_FREQ:
844 val = pwm_freq_from_reg(data->pwm[index][nr], data->clkin);
845 break;
846 default:
847 val = data->pwm[index][nr];
848 break;
849 }
850
851 return sprintf(buf, "%u\n", val);
852 }
853
854 static ssize_t
855 store_pwm(struct device *dev, struct device_attribute *attr,
856 const char *buf, size_t count)
857 {
858 struct i2c_client *client = to_i2c_client(dev);
859 struct w83795_data *data = i2c_get_clientdata(client);
860 struct sensor_device_attribute_2 *sensor_attr =
861 to_sensor_dev_attr_2(attr);
862 int nr = sensor_attr->nr;
863 int index = sensor_attr->index;
864 unsigned long val;
865
866 if (strict_strtoul(buf, 10, &val) < 0)
867 return -EINVAL;
868
869 mutex_lock(&data->update_lock);
870 switch (nr) {
871 case PWM_STOP_TIME:
872 val = time_to_reg(val);
873 break;
874 case PWM_FREQ:
875 val = pwm_freq_to_reg(val, data->clkin);
876 break;
877 default:
878 val = SENSORS_LIMIT(val, 0, 0xff);
879 break;
880 }
881 w83795_write(client, W83795_REG_PWM(index, nr), val);
882 data->pwm[index][nr] = val;
883 mutex_unlock(&data->update_lock);
884 return count;
885 }
886
887 static ssize_t
888 show_pwm_enable(struct device *dev, struct device_attribute *attr, char *buf)
889 {
890 struct sensor_device_attribute_2 *sensor_attr =
891 to_sensor_dev_attr_2(attr);
892 struct w83795_data *data = w83795_update_pwm_config(dev);
893 int index = sensor_attr->index;
894 u8 tmp;
895
896 /* Speed cruise mode */
897 if (data->pwm_fcms[0] & (1 << index)) {
898 tmp = 2;
899 goto out;
900 }
901 /* Thermal cruise or SmartFan IV mode */
902 for (tmp = 0; tmp < 6; tmp++) {
903 if (data->pwm_tfmr[tmp] & (1 << index)) {
904 tmp = 3;
905 goto out;
906 }
907 }
908 /* Manual mode */
909 tmp = 1;
910
911 out:
912 return sprintf(buf, "%u\n", tmp);
913 }
914
915 static ssize_t
916 store_pwm_enable(struct device *dev, struct device_attribute *attr,
917 const char *buf, size_t count)
918 {
919 struct i2c_client *client = to_i2c_client(dev);
920 struct w83795_data *data = w83795_update_pwm_config(dev);
921 struct sensor_device_attribute_2 *sensor_attr =
922 to_sensor_dev_attr_2(attr);
923 int index = sensor_attr->index;
924 unsigned long val;
925 int i;
926
927 if (strict_strtoul(buf, 10, &val) < 0)
928 return -EINVAL;
929 if (val < 1 || val > 2)
930 return -EINVAL;
931
932 mutex_lock(&data->update_lock);
933 switch (val) {
934 case 1:
935 /* Clear speed cruise mode bits */
936 data->pwm_fcms[0] &= ~(1 << index);
937 w83795_write(client, W83795_REG_FCMS1, data->pwm_fcms[0]);
938 /* Clear thermal cruise mode bits */
939 for (i = 0; i < 6; i++) {
940 data->pwm_tfmr[i] &= ~(1 << index);
941 w83795_write(client, W83795_REG_TFMR(i),
942 data->pwm_tfmr[i]);
943 }
944 break;
945 case 2:
946 data->pwm_fcms[0] |= (1 << index);
947 w83795_write(client, W83795_REG_FCMS1, data->pwm_fcms[0]);
948 break;
949 }
950 mutex_unlock(&data->update_lock);
951 return count;
952 }
953
954 static ssize_t
955 show_pwm_mode(struct device *dev, struct device_attribute *attr, char *buf)
956 {
957 struct w83795_data *data = w83795_update_pwm_config(dev);
958 int index = to_sensor_dev_attr_2(attr)->index;
959 unsigned int mode;
960
961 if (data->pwm_fomc & (1 << index))
962 mode = 0; /* DC */
963 else
964 mode = 1; /* PWM */
965
966 return sprintf(buf, "%u\n", mode);
967 }
968
969 /*
970 * Check whether a given temperature source can ever be useful.
971 * Returns the number of selectable temperature channels which are
972 * enabled.
973 */
974 static int w83795_tss_useful(const struct w83795_data *data, int tsrc)
975 {
976 int useful = 0, i;
977
978 for (i = 0; i < 4; i++) {
979 if (tss_map[i][tsrc] == TSS_MAP_RESERVED)
980 continue;
981 if (tss_map[i][tsrc] < 6) /* Analog */
982 useful += (data->has_temp >> tss_map[i][tsrc]) & 1;
983 else /* Digital */
984 useful += (data->has_dts >> (tss_map[i][tsrc] - 6)) & 1;
985 }
986
987 return useful;
988 }
989
990 static ssize_t
991 show_temp_src(struct device *dev, struct device_attribute *attr, char *buf)
992 {
993 struct sensor_device_attribute_2 *sensor_attr =
994 to_sensor_dev_attr_2(attr);
995 struct w83795_data *data = w83795_update_pwm_config(dev);
996 int index = sensor_attr->index;
997 u8 tmp = data->temp_src[index / 2];
998
999 if (index & 1)
1000 tmp >>= 4; /* Pick high nibble */
1001 else
1002 tmp &= 0x0f; /* Pick low nibble */
1003
1004 /* Look-up the actual temperature channel number */
1005 if (tmp >= 4 || tss_map[tmp][index] == TSS_MAP_RESERVED)
1006 return -EINVAL; /* Shouldn't happen */
1007
1008 return sprintf(buf, "%u\n", (unsigned int)tss_map[tmp][index] + 1);
1009 }
1010
1011 static ssize_t
1012 store_temp_src(struct device *dev, struct device_attribute *attr,
1013 const char *buf, size_t count)
1014 {
1015 struct i2c_client *client = to_i2c_client(dev);
1016 struct w83795_data *data = w83795_update_pwm_config(dev);
1017 struct sensor_device_attribute_2 *sensor_attr =
1018 to_sensor_dev_attr_2(attr);
1019 int index = sensor_attr->index;
1020 int tmp;
1021 unsigned long channel;
1022 u8 val = index / 2;
1023
1024 if (strict_strtoul(buf, 10, &channel) < 0 ||
1025 channel < 1 || channel > 14)
1026 return -EINVAL;
1027
1028 /* Check if request can be fulfilled */
1029 for (tmp = 0; tmp < 4; tmp++) {
1030 if (tss_map[tmp][index] == channel - 1)
1031 break;
1032 }
1033 if (tmp == 4) /* No match */
1034 return -EINVAL;
1035
1036 mutex_lock(&data->update_lock);
1037 if (index & 1) {
1038 tmp <<= 4;
1039 data->temp_src[val] &= 0x0f;
1040 } else {
1041 data->temp_src[val] &= 0xf0;
1042 }
1043 data->temp_src[val] |= tmp;
1044 w83795_write(client, W83795_REG_TSS(val), data->temp_src[val]);
1045 mutex_unlock(&data->update_lock);
1046
1047 return count;
1048 }
1049
1050 #define TEMP_PWM_ENABLE 0
1051 #define TEMP_PWM_FAN_MAP 1
1052 static ssize_t
1053 show_temp_pwm_enable(struct device *dev, struct device_attribute *attr,
1054 char *buf)
1055 {
1056 struct w83795_data *data = w83795_update_pwm_config(dev);
1057 struct sensor_device_attribute_2 *sensor_attr =
1058 to_sensor_dev_attr_2(attr);
1059 int nr = sensor_attr->nr;
1060 int index = sensor_attr->index;
1061 u8 tmp = 0xff;
1062
1063 switch (nr) {
1064 case TEMP_PWM_ENABLE:
1065 tmp = (data->pwm_fcms[1] >> index) & 1;
1066 if (tmp)
1067 tmp = 4;
1068 else
1069 tmp = 3;
1070 break;
1071 case TEMP_PWM_FAN_MAP:
1072 tmp = data->pwm_tfmr[index];
1073 break;
1074 }
1075
1076 return sprintf(buf, "%u\n", tmp);
1077 }
1078
1079 static ssize_t
1080 store_temp_pwm_enable(struct device *dev, struct device_attribute *attr,
1081 const char *buf, size_t count)
1082 {
1083 struct i2c_client *client = to_i2c_client(dev);
1084 struct w83795_data *data = w83795_update_pwm_config(dev);
1085 struct sensor_device_attribute_2 *sensor_attr =
1086 to_sensor_dev_attr_2(attr);
1087 int nr = sensor_attr->nr;
1088 int index = sensor_attr->index;
1089 unsigned long tmp;
1090
1091 if (strict_strtoul(buf, 10, &tmp) < 0)
1092 return -EINVAL;
1093
1094 switch (nr) {
1095 case TEMP_PWM_ENABLE:
1096 if (tmp != 3 && tmp != 4)
1097 return -EINVAL;
1098 tmp -= 3;
1099 mutex_lock(&data->update_lock);
1100 data->pwm_fcms[1] &= ~(1 << index);
1101 data->pwm_fcms[1] |= tmp << index;
1102 w83795_write(client, W83795_REG_FCMS2, data->pwm_fcms[1]);
1103 mutex_unlock(&data->update_lock);
1104 break;
1105 case TEMP_PWM_FAN_MAP:
1106 mutex_lock(&data->update_lock);
1107 tmp = SENSORS_LIMIT(tmp, 0, 0xff);
1108 w83795_write(client, W83795_REG_TFMR(index), tmp);
1109 data->pwm_tfmr[index] = tmp;
1110 mutex_unlock(&data->update_lock);
1111 break;
1112 }
1113 return count;
1114 }
1115
1116 #define FANIN_TARGET 0
1117 #define FANIN_TOL 1
1118 static ssize_t
1119 show_fanin(struct device *dev, struct device_attribute *attr, char *buf)
1120 {
1121 struct w83795_data *data = w83795_update_pwm_config(dev);
1122 struct sensor_device_attribute_2 *sensor_attr =
1123 to_sensor_dev_attr_2(attr);
1124 int nr = sensor_attr->nr;
1125 int index = sensor_attr->index;
1126 u16 tmp = 0;
1127
1128 switch (nr) {
1129 case FANIN_TARGET:
1130 tmp = fan_from_reg(data->target_speed[index]);
1131 break;
1132 case FANIN_TOL:
1133 tmp = data->tol_speed;
1134 break;
1135 }
1136
1137 return sprintf(buf, "%u\n", tmp);
1138 }
1139
1140 static ssize_t
1141 store_fanin(struct device *dev, struct device_attribute *attr,
1142 const char *buf, size_t count)
1143 {
1144 struct i2c_client *client = to_i2c_client(dev);
1145 struct w83795_data *data = i2c_get_clientdata(client);
1146 struct sensor_device_attribute_2 *sensor_attr =
1147 to_sensor_dev_attr_2(attr);
1148 int nr = sensor_attr->nr;
1149 int index = sensor_attr->index;
1150 unsigned long val;
1151
1152 if (strict_strtoul(buf, 10, &val) < 0)
1153 return -EINVAL;
1154
1155 mutex_lock(&data->update_lock);
1156 switch (nr) {
1157 case FANIN_TARGET:
1158 val = fan_to_reg(SENSORS_LIMIT(val, 0, 0xfff));
1159 w83795_write(client, W83795_REG_FTSH(index), val >> 4);
1160 w83795_write(client, W83795_REG_FTSL(index), (val << 4) & 0xf0);
1161 data->target_speed[index] = val;
1162 break;
1163 case FANIN_TOL:
1164 val = SENSORS_LIMIT(val, 0, 0x3f);
1165 w83795_write(client, W83795_REG_TFTS, val);
1166 data->tol_speed = val;
1167 break;
1168 }
1169 mutex_unlock(&data->update_lock);
1170
1171 return count;
1172 }
1173
1174
1175 static ssize_t
1176 show_temp_pwm(struct device *dev, struct device_attribute *attr, char *buf)
1177 {
1178 struct w83795_data *data = w83795_update_pwm_config(dev);
1179 struct sensor_device_attribute_2 *sensor_attr =
1180 to_sensor_dev_attr_2(attr);
1181 int nr = sensor_attr->nr;
1182 int index = sensor_attr->index;
1183 long tmp = temp_from_reg(data->pwm_temp[index][nr]);
1184
1185 return sprintf(buf, "%ld\n", tmp);
1186 }
1187
1188 static ssize_t
1189 store_temp_pwm(struct device *dev, struct device_attribute *attr,
1190 const char *buf, size_t count)
1191 {
1192 struct i2c_client *client = to_i2c_client(dev);
1193 struct w83795_data *data = i2c_get_clientdata(client);
1194 struct sensor_device_attribute_2 *sensor_attr =
1195 to_sensor_dev_attr_2(attr);
1196 int nr = sensor_attr->nr;
1197 int index = sensor_attr->index;
1198 unsigned long val;
1199 u8 tmp;
1200
1201 if (strict_strtoul(buf, 10, &val) < 0)
1202 return -EINVAL;
1203 val /= 1000;
1204
1205 mutex_lock(&data->update_lock);
1206 switch (nr) {
1207 case TEMP_PWM_TTTI:
1208 val = SENSORS_LIMIT(val, 0, 0x7f);
1209 w83795_write(client, W83795_REG_TTTI(index), val);
1210 break;
1211 case TEMP_PWM_CTFS:
1212 val = SENSORS_LIMIT(val, 0, 0x7f);
1213 w83795_write(client, W83795_REG_CTFS(index), val);
1214 break;
1215 case TEMP_PWM_HCT:
1216 val = SENSORS_LIMIT(val, 0, 0x0f);
1217 tmp = w83795_read(client, W83795_REG_HT(index));
1218 tmp &= 0x0f;
1219 tmp |= (val << 4) & 0xf0;
1220 w83795_write(client, W83795_REG_HT(index), tmp);
1221 break;
1222 case TEMP_PWM_HOT:
1223 val = SENSORS_LIMIT(val, 0, 0x0f);
1224 tmp = w83795_read(client, W83795_REG_HT(index));
1225 tmp &= 0xf0;
1226 tmp |= val & 0x0f;
1227 w83795_write(client, W83795_REG_HT(index), tmp);
1228 break;
1229 }
1230 data->pwm_temp[index][nr] = val;
1231 mutex_unlock(&data->update_lock);
1232
1233 return count;
1234 }
1235
1236 static ssize_t
1237 show_sf4_pwm(struct device *dev, struct device_attribute *attr, char *buf)
1238 {
1239 struct w83795_data *data = w83795_update_pwm_config(dev);
1240 struct sensor_device_attribute_2 *sensor_attr =
1241 to_sensor_dev_attr_2(attr);
1242 int nr = sensor_attr->nr;
1243 int index = sensor_attr->index;
1244
1245 return sprintf(buf, "%u\n", data->sf4_reg[index][SF4_PWM][nr]);
1246 }
1247
1248 static ssize_t
1249 store_sf4_pwm(struct device *dev, struct device_attribute *attr,
1250 const char *buf, size_t count)
1251 {
1252 struct i2c_client *client = to_i2c_client(dev);
1253 struct w83795_data *data = i2c_get_clientdata(client);
1254 struct sensor_device_attribute_2 *sensor_attr =
1255 to_sensor_dev_attr_2(attr);
1256 int nr = sensor_attr->nr;
1257 int index = sensor_attr->index;
1258 unsigned long val;
1259
1260 if (strict_strtoul(buf, 10, &val) < 0)
1261 return -EINVAL;
1262
1263 mutex_lock(&data->update_lock);
1264 w83795_write(client, W83795_REG_SF4_PWM(index, nr), val);
1265 data->sf4_reg[index][SF4_PWM][nr] = val;
1266 mutex_unlock(&data->update_lock);
1267
1268 return count;
1269 }
1270
1271 static ssize_t
1272 show_sf4_temp(struct device *dev, struct device_attribute *attr, char *buf)
1273 {
1274 struct w83795_data *data = w83795_update_pwm_config(dev);
1275 struct sensor_device_attribute_2 *sensor_attr =
1276 to_sensor_dev_attr_2(attr);
1277 int nr = sensor_attr->nr;
1278 int index = sensor_attr->index;
1279
1280 return sprintf(buf, "%u\n",
1281 (data->sf4_reg[index][SF4_TEMP][nr]) * 1000);
1282 }
1283
1284 static ssize_t
1285 store_sf4_temp(struct device *dev, struct device_attribute *attr,
1286 const char *buf, size_t count)
1287 {
1288 struct i2c_client *client = to_i2c_client(dev);
1289 struct w83795_data *data = i2c_get_clientdata(client);
1290 struct sensor_device_attribute_2 *sensor_attr =
1291 to_sensor_dev_attr_2(attr);
1292 int nr = sensor_attr->nr;
1293 int index = sensor_attr->index;
1294 unsigned long val;
1295
1296 if (strict_strtoul(buf, 10, &val) < 0)
1297 return -EINVAL;
1298 val /= 1000;
1299
1300 mutex_lock(&data->update_lock);
1301 w83795_write(client, W83795_REG_SF4_TEMP(index, nr), val);
1302 data->sf4_reg[index][SF4_TEMP][nr] = val;
1303 mutex_unlock(&data->update_lock);
1304
1305 return count;
1306 }
1307
1308
1309 static ssize_t
1310 show_temp(struct device *dev, struct device_attribute *attr, char *buf)
1311 {
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 struct w83795_data *data = w83795_update_device(dev);
1317 long temp = temp_from_reg(data->temp[index][nr]);
1318
1319 if (nr == TEMP_READ)
1320 temp += (data->temp_read_vrlsb[index] >> 6) * 250;
1321 return sprintf(buf, "%ld\n", temp);
1322 }
1323
1324 static ssize_t
1325 store_temp(struct device *dev, struct device_attribute *attr,
1326 const char *buf, size_t count)
1327 {
1328 struct sensor_device_attribute_2 *sensor_attr =
1329 to_sensor_dev_attr_2(attr);
1330 int nr = sensor_attr->nr;
1331 int index = sensor_attr->index;
1332 struct i2c_client *client = to_i2c_client(dev);
1333 struct w83795_data *data = i2c_get_clientdata(client);
1334 long tmp;
1335
1336 if (strict_strtol(buf, 10, &tmp) < 0)
1337 return -EINVAL;
1338
1339 mutex_lock(&data->update_lock);
1340 data->temp[index][nr] = temp_to_reg(tmp, -128, 127);
1341 w83795_write(client, W83795_REG_TEMP[index][nr], data->temp[index][nr]);
1342 mutex_unlock(&data->update_lock);
1343 return count;
1344 }
1345
1346
1347 static ssize_t
1348 show_dts_mode(struct device *dev, struct device_attribute *attr, char *buf)
1349 {
1350 struct w83795_data *data = dev_get_drvdata(dev);
1351 int tmp;
1352
1353 if (data->enable_dts & 2)
1354 tmp = 5;
1355 else
1356 tmp = 6;
1357
1358 return sprintf(buf, "%d\n", tmp);
1359 }
1360
1361 static ssize_t
1362 show_dts(struct device *dev, struct device_attribute *attr, char *buf)
1363 {
1364 struct sensor_device_attribute_2 *sensor_attr =
1365 to_sensor_dev_attr_2(attr);
1366 int index = sensor_attr->index;
1367 struct w83795_data *data = w83795_update_device(dev);
1368 long temp = temp_from_reg(data->dts[index]);
1369
1370 temp += (data->dts_read_vrlsb[index] >> 6) * 250;
1371 return sprintf(buf, "%ld\n", temp);
1372 }
1373
1374 static ssize_t
1375 show_dts_ext(struct device *dev, struct device_attribute *attr, char *buf)
1376 {
1377 struct sensor_device_attribute_2 *sensor_attr =
1378 to_sensor_dev_attr_2(attr);
1379 int nr = sensor_attr->nr;
1380 struct w83795_data *data = dev_get_drvdata(dev);
1381 long temp = temp_from_reg(data->dts_ext[nr]);
1382
1383 return sprintf(buf, "%ld\n", temp);
1384 }
1385
1386 static ssize_t
1387 store_dts_ext(struct device *dev, struct device_attribute *attr,
1388 const char *buf, size_t count)
1389 {
1390 struct sensor_device_attribute_2 *sensor_attr =
1391 to_sensor_dev_attr_2(attr);
1392 int nr = sensor_attr->nr;
1393 struct i2c_client *client = to_i2c_client(dev);
1394 struct w83795_data *data = i2c_get_clientdata(client);
1395 long tmp;
1396
1397 if (strict_strtol(buf, 10, &tmp) < 0)
1398 return -EINVAL;
1399
1400 mutex_lock(&data->update_lock);
1401 data->dts_ext[nr] = temp_to_reg(tmp, -128, 127);
1402 w83795_write(client, W83795_REG_DTS_EXT(nr), data->dts_ext[nr]);
1403 mutex_unlock(&data->update_lock);
1404 return count;
1405 }
1406
1407
1408 static ssize_t
1409 show_temp_mode(struct device *dev, struct device_attribute *attr, char *buf)
1410 {
1411 struct w83795_data *data = dev_get_drvdata(dev);
1412 struct sensor_device_attribute_2 *sensor_attr =
1413 to_sensor_dev_attr_2(attr);
1414 int index = sensor_attr->index;
1415 int tmp;
1416
1417 if (data->temp_mode & (1 << index))
1418 tmp = 3; /* Thermal diode */
1419 else
1420 tmp = 4; /* Thermistor */
1421
1422 return sprintf(buf, "%d\n", tmp);
1423 }
1424
1425 /* Only for temp1-4 (temp5-6 can only be thermistor) */
1426 static ssize_t
1427 store_temp_mode(struct device *dev, struct device_attribute *attr,
1428 const char *buf, size_t count)
1429 {
1430 struct i2c_client *client = to_i2c_client(dev);
1431 struct w83795_data *data = i2c_get_clientdata(client);
1432 struct sensor_device_attribute_2 *sensor_attr =
1433 to_sensor_dev_attr_2(attr);
1434 int index = sensor_attr->index;
1435 int reg_shift;
1436 unsigned long val;
1437 u8 tmp;
1438
1439 if (strict_strtoul(buf, 10, &val) < 0)
1440 return -EINVAL;
1441 if ((val != 4) && (val != 3))
1442 return -EINVAL;
1443
1444 mutex_lock(&data->update_lock);
1445 if (val == 3) {
1446 /* Thermal diode */
1447 val = 0x01;
1448 data->temp_mode |= 1 << index;
1449 } else if (val == 4) {
1450 /* Thermistor */
1451 val = 0x03;
1452 data->temp_mode &= ~(1 << index);
1453 }
1454
1455 reg_shift = 2 * index;
1456 tmp = w83795_read(client, W83795_REG_TEMP_CTRL2);
1457 tmp &= ~(0x03 << reg_shift);
1458 tmp |= val << reg_shift;
1459 w83795_write(client, W83795_REG_TEMP_CTRL2, tmp);
1460
1461 mutex_unlock(&data->update_lock);
1462 return count;
1463 }
1464
1465
1466 /* show/store VIN */
1467 static ssize_t
1468 show_in(struct device *dev, struct device_attribute *attr, char *buf)
1469 {
1470 struct sensor_device_attribute_2 *sensor_attr =
1471 to_sensor_dev_attr_2(attr);
1472 int nr = sensor_attr->nr;
1473 int index = sensor_attr->index;
1474 struct w83795_data *data = w83795_update_device(dev);
1475 u16 val = data->in[index][nr];
1476 u8 lsb_idx;
1477
1478 switch (nr) {
1479 case IN_READ:
1480 /* calculate this value again by sensors as sensors3.conf */
1481 if ((index >= 17) &&
1482 !((data->has_gain >> (index - 17)) & 1))
1483 val *= 8;
1484 break;
1485 case IN_MAX:
1486 case IN_LOW:
1487 lsb_idx = IN_LSB_SHIFT_IDX[index][IN_LSB_IDX];
1488 val <<= 2;
1489 val |= (data->in_lsb[lsb_idx][nr] >>
1490 IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT]) & 0x03;
1491 if ((index >= 17) &&
1492 !((data->has_gain >> (index - 17)) & 1))
1493 val *= 8;
1494 break;
1495 }
1496 val = in_from_reg(index, val);
1497
1498 return sprintf(buf, "%d\n", val);
1499 }
1500
1501 static ssize_t
1502 store_in(struct device *dev, struct device_attribute *attr,
1503 const char *buf, size_t count)
1504 {
1505 struct sensor_device_attribute_2 *sensor_attr =
1506 to_sensor_dev_attr_2(attr);
1507 int nr = sensor_attr->nr;
1508 int index = sensor_attr->index;
1509 struct i2c_client *client = to_i2c_client(dev);
1510 struct w83795_data *data = i2c_get_clientdata(client);
1511 unsigned long val;
1512 u8 tmp;
1513 u8 lsb_idx;
1514
1515 if (strict_strtoul(buf, 10, &val) < 0)
1516 return -EINVAL;
1517 val = in_to_reg(index, val);
1518
1519 if ((index >= 17) &&
1520 !((data->has_gain >> (index - 17)) & 1))
1521 val /= 8;
1522 val = SENSORS_LIMIT(val, 0, 0x3FF);
1523 mutex_lock(&data->update_lock);
1524
1525 lsb_idx = IN_LSB_SHIFT_IDX[index][IN_LSB_IDX];
1526 tmp = w83795_read(client, IN_LSB_REG(lsb_idx, nr));
1527 tmp &= ~(0x03 << IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT]);
1528 tmp |= (val & 0x03) << IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT];
1529 w83795_write(client, IN_LSB_REG(lsb_idx, nr), tmp);
1530 data->in_lsb[lsb_idx][nr] = tmp;
1531
1532 tmp = (val >> 2) & 0xff;
1533 w83795_write(client, W83795_REG_IN[index][nr], tmp);
1534 data->in[index][nr] = tmp;
1535
1536 mutex_unlock(&data->update_lock);
1537 return count;
1538 }
1539
1540
1541 #ifdef CONFIG_SENSORS_W83795_FANCTRL
1542 static ssize_t
1543 show_sf_setup(struct device *dev, struct device_attribute *attr, char *buf)
1544 {
1545 struct sensor_device_attribute_2 *sensor_attr =
1546 to_sensor_dev_attr_2(attr);
1547 int nr = sensor_attr->nr;
1548 struct w83795_data *data = w83795_update_pwm_config(dev);
1549 u16 val = data->setup_pwm[nr];
1550
1551 switch (nr) {
1552 case SETUP_PWM_UPTIME:
1553 case SETUP_PWM_DOWNTIME:
1554 val = time_from_reg(val);
1555 break;
1556 }
1557
1558 return sprintf(buf, "%d\n", val);
1559 }
1560
1561 static ssize_t
1562 store_sf_setup(struct device *dev, struct device_attribute *attr,
1563 const char *buf, size_t count)
1564 {
1565 struct sensor_device_attribute_2 *sensor_attr =
1566 to_sensor_dev_attr_2(attr);
1567 int nr = sensor_attr->nr;
1568 struct i2c_client *client = to_i2c_client(dev);
1569 struct w83795_data *data = i2c_get_clientdata(client);
1570 unsigned long val;
1571
1572 if (strict_strtoul(buf, 10, &val) < 0)
1573 return -EINVAL;
1574
1575 switch (nr) {
1576 case SETUP_PWM_DEFAULT:
1577 val = SENSORS_LIMIT(val, 0, 0xff);
1578 break;
1579 case SETUP_PWM_UPTIME:
1580 case SETUP_PWM_DOWNTIME:
1581 val = time_to_reg(val);
1582 if (val == 0)
1583 return -EINVAL;
1584 break;
1585 }
1586
1587 mutex_lock(&data->update_lock);
1588 data->setup_pwm[nr] = val;
1589 w83795_write(client, W83795_REG_SETUP_PWM(nr), val);
1590 mutex_unlock(&data->update_lock);
1591 return count;
1592 }
1593 #endif
1594
1595
1596 #define NOT_USED -1
1597
1598 /* Don't change the attribute order, _max, _min and _beep are accessed by index
1599 * somewhere else in the code */
1600 #define SENSOR_ATTR_IN(index) { \
1601 SENSOR_ATTR_2(in##index##_input, S_IRUGO, show_in, NULL, \
1602 IN_READ, index), \
1603 SENSOR_ATTR_2(in##index##_max, S_IRUGO | S_IWUSR, show_in, \
1604 store_in, IN_MAX, index), \
1605 SENSOR_ATTR_2(in##index##_min, S_IRUGO | S_IWUSR, show_in, \
1606 store_in, IN_LOW, index), \
1607 SENSOR_ATTR_2(in##index##_alarm, S_IRUGO, show_alarm_beep, \
1608 NULL, ALARM_STATUS, index + ((index > 14) ? 1 : 0)), \
1609 SENSOR_ATTR_2(in##index##_beep, S_IWUSR | S_IRUGO, \
1610 show_alarm_beep, store_beep, BEEP_ENABLE, \
1611 index + ((index > 14) ? 1 : 0)) }
1612
1613 /* Don't change the attribute order, _beep is accessed by index
1614 * somewhere else in the code */
1615 #define SENSOR_ATTR_FAN(index) { \
1616 SENSOR_ATTR_2(fan##index##_input, S_IRUGO, show_fan, \
1617 NULL, FAN_INPUT, index - 1), \
1618 SENSOR_ATTR_2(fan##index##_min, S_IWUSR | S_IRUGO, \
1619 show_fan, store_fan_min, FAN_MIN, index - 1), \
1620 SENSOR_ATTR_2(fan##index##_alarm, S_IRUGO, show_alarm_beep, \
1621 NULL, ALARM_STATUS, index + 31), \
1622 SENSOR_ATTR_2(fan##index##_beep, S_IWUSR | S_IRUGO, \
1623 show_alarm_beep, store_beep, BEEP_ENABLE, index + 31) }
1624
1625 #define SENSOR_ATTR_PWM(index) { \
1626 SENSOR_ATTR_2(pwm##index, S_IWUSR | S_IRUGO, show_pwm, \
1627 store_pwm, PWM_OUTPUT, index - 1), \
1628 SENSOR_ATTR_2(pwm##index##_nonstop, S_IWUSR | S_IRUGO, \
1629 show_pwm, store_pwm, PWM_NONSTOP, index - 1), \
1630 SENSOR_ATTR_2(pwm##index##_start, S_IWUSR | S_IRUGO, \
1631 show_pwm, store_pwm, PWM_START, index - 1), \
1632 SENSOR_ATTR_2(pwm##index##_stop_time, S_IWUSR | S_IRUGO, \
1633 show_pwm, store_pwm, PWM_STOP_TIME, index - 1), \
1634 SENSOR_ATTR_2(pwm##index##_freq, S_IWUSR | S_IRUGO, \
1635 show_pwm, store_pwm, PWM_FREQ, index - 1), \
1636 SENSOR_ATTR_2(pwm##index##_enable, S_IWUSR | S_IRUGO, \
1637 show_pwm_enable, store_pwm_enable, NOT_USED, index - 1), \
1638 SENSOR_ATTR_2(pwm##index##_mode, S_IRUGO, \
1639 show_pwm_mode, NULL, NOT_USED, index - 1), \
1640 SENSOR_ATTR_2(fan##index##_target, S_IWUSR | S_IRUGO, \
1641 show_fanin, store_fanin, FANIN_TARGET, index - 1) }
1642
1643 /* Don't change the attribute order, _beep is accessed by index
1644 * somewhere else in the code */
1645 #define SENSOR_ATTR_DTS(index) { \
1646 SENSOR_ATTR_2(temp##index##_type, S_IRUGO , \
1647 show_dts_mode, NULL, NOT_USED, index - 7), \
1648 SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_dts, \
1649 NULL, NOT_USED, index - 7), \
1650 SENSOR_ATTR_2(temp##index##_crit, S_IRUGO | S_IWUSR, show_dts_ext, \
1651 store_dts_ext, DTS_CRIT, NOT_USED), \
1652 SENSOR_ATTR_2(temp##index##_crit_hyst, S_IRUGO | S_IWUSR, \
1653 show_dts_ext, store_dts_ext, DTS_CRIT_HYST, NOT_USED), \
1654 SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_dts_ext, \
1655 store_dts_ext, DTS_WARN, NOT_USED), \
1656 SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR, \
1657 show_dts_ext, store_dts_ext, DTS_WARN_HYST, NOT_USED), \
1658 SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO, \
1659 show_alarm_beep, NULL, ALARM_STATUS, index + 17), \
1660 SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO, \
1661 show_alarm_beep, store_beep, BEEP_ENABLE, index + 17) }
1662
1663 /* Don't change the attribute order, _beep is accessed by index
1664 * somewhere else in the code */
1665 #define SENSOR_ATTR_TEMP(index) { \
1666 SENSOR_ATTR_2(temp##index##_type, S_IRUGO | (index < 4 ? S_IWUSR : 0), \
1667 show_temp_mode, store_temp_mode, NOT_USED, index - 1), \
1668 SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_temp, \
1669 NULL, TEMP_READ, index - 1), \
1670 SENSOR_ATTR_2(temp##index##_crit, S_IRUGO | S_IWUSR, show_temp, \
1671 store_temp, TEMP_CRIT, index - 1), \
1672 SENSOR_ATTR_2(temp##index##_crit_hyst, S_IRUGO | S_IWUSR, \
1673 show_temp, store_temp, TEMP_CRIT_HYST, index - 1), \
1674 SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_temp, \
1675 store_temp, TEMP_WARN, index - 1), \
1676 SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR, \
1677 show_temp, store_temp, TEMP_WARN_HYST, index - 1), \
1678 SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO, \
1679 show_alarm_beep, NULL, ALARM_STATUS, \
1680 index + (index > 4 ? 11 : 17)), \
1681 SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO, \
1682 show_alarm_beep, store_beep, BEEP_ENABLE, \
1683 index + (index > 4 ? 11 : 17)), \
1684 SENSOR_ATTR_2(temp##index##_pwm_enable, S_IWUSR | S_IRUGO, \
1685 show_temp_pwm_enable, store_temp_pwm_enable, \
1686 TEMP_PWM_ENABLE, index - 1), \
1687 SENSOR_ATTR_2(temp##index##_auto_channels_pwm, S_IWUSR | S_IRUGO, \
1688 show_temp_pwm_enable, store_temp_pwm_enable, \
1689 TEMP_PWM_FAN_MAP, index - 1), \
1690 SENSOR_ATTR_2(thermal_cruise##index, S_IWUSR | S_IRUGO, \
1691 show_temp_pwm, store_temp_pwm, TEMP_PWM_TTTI, index - 1), \
1692 SENSOR_ATTR_2(temp##index##_warn, S_IWUSR | S_IRUGO, \
1693 show_temp_pwm, store_temp_pwm, TEMP_PWM_CTFS, index - 1), \
1694 SENSOR_ATTR_2(temp##index##_warn_hyst, S_IWUSR | S_IRUGO, \
1695 show_temp_pwm, store_temp_pwm, TEMP_PWM_HCT, index - 1), \
1696 SENSOR_ATTR_2(temp##index##_operation_hyst, S_IWUSR | S_IRUGO, \
1697 show_temp_pwm, store_temp_pwm, TEMP_PWM_HOT, index - 1), \
1698 SENSOR_ATTR_2(temp##index##_auto_point1_pwm, S_IRUGO | S_IWUSR, \
1699 show_sf4_pwm, store_sf4_pwm, 0, index - 1), \
1700 SENSOR_ATTR_2(temp##index##_auto_point2_pwm, S_IRUGO | S_IWUSR, \
1701 show_sf4_pwm, store_sf4_pwm, 1, index - 1), \
1702 SENSOR_ATTR_2(temp##index##_auto_point3_pwm, S_IRUGO | S_IWUSR, \
1703 show_sf4_pwm, store_sf4_pwm, 2, index - 1), \
1704 SENSOR_ATTR_2(temp##index##_auto_point4_pwm, S_IRUGO | S_IWUSR, \
1705 show_sf4_pwm, store_sf4_pwm, 3, index - 1), \
1706 SENSOR_ATTR_2(temp##index##_auto_point5_pwm, S_IRUGO | S_IWUSR, \
1707 show_sf4_pwm, store_sf4_pwm, 4, index - 1), \
1708 SENSOR_ATTR_2(temp##index##_auto_point6_pwm, S_IRUGO | S_IWUSR, \
1709 show_sf4_pwm, store_sf4_pwm, 5, index - 1), \
1710 SENSOR_ATTR_2(temp##index##_auto_point7_pwm, S_IRUGO | S_IWUSR, \
1711 show_sf4_pwm, store_sf4_pwm, 6, index - 1), \
1712 SENSOR_ATTR_2(temp##index##_auto_point1_temp, S_IRUGO | S_IWUSR,\
1713 show_sf4_temp, store_sf4_temp, 0, index - 1), \
1714 SENSOR_ATTR_2(temp##index##_auto_point2_temp, S_IRUGO | S_IWUSR,\
1715 show_sf4_temp, store_sf4_temp, 1, index - 1), \
1716 SENSOR_ATTR_2(temp##index##_auto_point3_temp, S_IRUGO | S_IWUSR,\
1717 show_sf4_temp, store_sf4_temp, 2, index - 1), \
1718 SENSOR_ATTR_2(temp##index##_auto_point4_temp, S_IRUGO | S_IWUSR,\
1719 show_sf4_temp, store_sf4_temp, 3, index - 1), \
1720 SENSOR_ATTR_2(temp##index##_auto_point5_temp, S_IRUGO | S_IWUSR,\
1721 show_sf4_temp, store_sf4_temp, 4, index - 1), \
1722 SENSOR_ATTR_2(temp##index##_auto_point6_temp, S_IRUGO | S_IWUSR,\
1723 show_sf4_temp, store_sf4_temp, 5, index - 1), \
1724 SENSOR_ATTR_2(temp##index##_auto_point7_temp, S_IRUGO | S_IWUSR,\
1725 show_sf4_temp, store_sf4_temp, 6, index - 1) }
1726
1727
1728 static struct sensor_device_attribute_2 w83795_in[][5] = {
1729 SENSOR_ATTR_IN(0),
1730 SENSOR_ATTR_IN(1),
1731 SENSOR_ATTR_IN(2),
1732 SENSOR_ATTR_IN(3),
1733 SENSOR_ATTR_IN(4),
1734 SENSOR_ATTR_IN(5),
1735 SENSOR_ATTR_IN(6),
1736 SENSOR_ATTR_IN(7),
1737 SENSOR_ATTR_IN(8),
1738 SENSOR_ATTR_IN(9),
1739 SENSOR_ATTR_IN(10),
1740 SENSOR_ATTR_IN(11),
1741 SENSOR_ATTR_IN(12),
1742 SENSOR_ATTR_IN(13),
1743 SENSOR_ATTR_IN(14),
1744 SENSOR_ATTR_IN(15),
1745 SENSOR_ATTR_IN(16),
1746 SENSOR_ATTR_IN(17),
1747 SENSOR_ATTR_IN(18),
1748 SENSOR_ATTR_IN(19),
1749 SENSOR_ATTR_IN(20),
1750 };
1751
1752 static const struct sensor_device_attribute_2 w83795_fan[][4] = {
1753 SENSOR_ATTR_FAN(1),
1754 SENSOR_ATTR_FAN(2),
1755 SENSOR_ATTR_FAN(3),
1756 SENSOR_ATTR_FAN(4),
1757 SENSOR_ATTR_FAN(5),
1758 SENSOR_ATTR_FAN(6),
1759 SENSOR_ATTR_FAN(7),
1760 SENSOR_ATTR_FAN(8),
1761 SENSOR_ATTR_FAN(9),
1762 SENSOR_ATTR_FAN(10),
1763 SENSOR_ATTR_FAN(11),
1764 SENSOR_ATTR_FAN(12),
1765 SENSOR_ATTR_FAN(13),
1766 SENSOR_ATTR_FAN(14),
1767 };
1768
1769 static const struct sensor_device_attribute_2 w83795_temp[][28] = {
1770 SENSOR_ATTR_TEMP(1),
1771 SENSOR_ATTR_TEMP(2),
1772 SENSOR_ATTR_TEMP(3),
1773 SENSOR_ATTR_TEMP(4),
1774 SENSOR_ATTR_TEMP(5),
1775 SENSOR_ATTR_TEMP(6),
1776 };
1777
1778 static const struct sensor_device_attribute_2 w83795_dts[][8] = {
1779 SENSOR_ATTR_DTS(7),
1780 SENSOR_ATTR_DTS(8),
1781 SENSOR_ATTR_DTS(9),
1782 SENSOR_ATTR_DTS(10),
1783 SENSOR_ATTR_DTS(11),
1784 SENSOR_ATTR_DTS(12),
1785 SENSOR_ATTR_DTS(13),
1786 SENSOR_ATTR_DTS(14),
1787 };
1788
1789 static const struct sensor_device_attribute_2 w83795_pwm[][8] = {
1790 SENSOR_ATTR_PWM(1),
1791 SENSOR_ATTR_PWM(2),
1792 SENSOR_ATTR_PWM(3),
1793 SENSOR_ATTR_PWM(4),
1794 SENSOR_ATTR_PWM(5),
1795 SENSOR_ATTR_PWM(6),
1796 SENSOR_ATTR_PWM(7),
1797 SENSOR_ATTR_PWM(8),
1798 };
1799
1800 static const struct sensor_device_attribute_2 w83795_tss[6] = {
1801 SENSOR_ATTR_2(temp1_source_sel, S_IWUSR | S_IRUGO,
1802 show_temp_src, store_temp_src, NOT_USED, 0),
1803 SENSOR_ATTR_2(temp2_source_sel, S_IWUSR | S_IRUGO,
1804 show_temp_src, store_temp_src, NOT_USED, 1),
1805 SENSOR_ATTR_2(temp3_source_sel, S_IWUSR | S_IRUGO,
1806 show_temp_src, store_temp_src, NOT_USED, 2),
1807 SENSOR_ATTR_2(temp4_source_sel, S_IWUSR | S_IRUGO,
1808 show_temp_src, store_temp_src, NOT_USED, 3),
1809 SENSOR_ATTR_2(temp5_source_sel, S_IWUSR | S_IRUGO,
1810 show_temp_src, store_temp_src, NOT_USED, 4),
1811 SENSOR_ATTR_2(temp6_source_sel, S_IWUSR | S_IRUGO,
1812 show_temp_src, store_temp_src, NOT_USED, 5),
1813 };
1814
1815 static const struct sensor_device_attribute_2 sda_single_files[] = {
1816 SENSOR_ATTR_2(intrusion0_alarm, S_IWUSR | S_IRUGO, show_alarm_beep,
1817 store_chassis_clear, ALARM_STATUS, 46),
1818 #ifdef CONFIG_SENSORS_W83795_FANCTRL
1819 SENSOR_ATTR_2(speed_cruise_tolerance, S_IWUSR | S_IRUGO, show_fanin,
1820 store_fanin, FANIN_TOL, NOT_USED),
1821 SENSOR_ATTR_2(pwm_default, S_IWUSR | S_IRUGO, show_sf_setup,
1822 store_sf_setup, SETUP_PWM_DEFAULT, NOT_USED),
1823 SENSOR_ATTR_2(pwm_uptime, S_IWUSR | S_IRUGO, show_sf_setup,
1824 store_sf_setup, SETUP_PWM_UPTIME, NOT_USED),
1825 SENSOR_ATTR_2(pwm_downtime, S_IWUSR | S_IRUGO, show_sf_setup,
1826 store_sf_setup, SETUP_PWM_DOWNTIME, NOT_USED),
1827 #endif
1828 };
1829
1830 static const struct sensor_device_attribute_2 sda_beep_files[] = {
1831 SENSOR_ATTR_2(intrusion0_beep, S_IWUSR | S_IRUGO, show_alarm_beep,
1832 store_beep, BEEP_ENABLE, 46),
1833 SENSOR_ATTR_2(beep_enable, S_IWUSR | S_IRUGO, show_alarm_beep,
1834 store_beep, BEEP_ENABLE, 47),
1835 };
1836
1837 /*
1838 * Driver interface
1839 */
1840
1841 static void w83795_init_client(struct i2c_client *client)
1842 {
1843 struct w83795_data *data = i2c_get_clientdata(client);
1844 static const u16 clkin[4] = { /* in kHz */
1845 14318, 24000, 33333, 48000
1846 };
1847 u8 config;
1848
1849 if (reset)
1850 w83795_write(client, W83795_REG_CONFIG, 0x80);
1851
1852 /* Start monitoring if needed */
1853 config = w83795_read(client, W83795_REG_CONFIG);
1854 if (!(config & W83795_REG_CONFIG_START)) {
1855 dev_info(&client->dev, "Enabling monitoring operations\n");
1856 w83795_write(client, W83795_REG_CONFIG,
1857 config | W83795_REG_CONFIG_START);
1858 }
1859
1860 data->clkin = clkin[(config >> 3) & 0x3];
1861 dev_dbg(&client->dev, "clkin = %u kHz\n", data->clkin);
1862 }
1863
1864 static int w83795_get_device_id(struct i2c_client *client)
1865 {
1866 int device_id;
1867
1868 device_id = i2c_smbus_read_byte_data(client, W83795_REG_DEVICEID);
1869
1870 /* Special case for rev. A chips; can't be checked first because later
1871 revisions emulate this for compatibility */
1872 if (device_id < 0 || (device_id & 0xf0) != 0x50) {
1873 int alt_id;
1874
1875 alt_id = i2c_smbus_read_byte_data(client,
1876 W83795_REG_DEVICEID_A);
1877 if (alt_id == 0x50)
1878 device_id = alt_id;
1879 }
1880
1881 return device_id;
1882 }
1883
1884 /* Return 0 if detection is successful, -ENODEV otherwise */
1885 static int w83795_detect(struct i2c_client *client,
1886 struct i2c_board_info *info)
1887 {
1888 int bank, vendor_id, device_id, expected, i2c_addr, config;
1889 struct i2c_adapter *adapter = client->adapter;
1890 unsigned short address = client->addr;
1891 const char *chip_name;
1892
1893 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1894 return -ENODEV;
1895 bank = i2c_smbus_read_byte_data(client, W83795_REG_BANKSEL);
1896 if (bank < 0 || (bank & 0x7c)) {
1897 dev_dbg(&adapter->dev,
1898 "w83795: Detection failed at addr 0x%02hx, check %s\n",
1899 address, "bank");
1900 return -ENODEV;
1901 }
1902
1903 /* Check Nuvoton vendor ID */
1904 vendor_id = i2c_smbus_read_byte_data(client, W83795_REG_VENDORID);
1905 expected = bank & 0x80 ? 0x5c : 0xa3;
1906 if (vendor_id != expected) {
1907 dev_dbg(&adapter->dev,
1908 "w83795: Detection failed at addr 0x%02hx, check %s\n",
1909 address, "vendor id");
1910 return -ENODEV;
1911 }
1912
1913 /* Check device ID */
1914 device_id = w83795_get_device_id(client) |
1915 (i2c_smbus_read_byte_data(client, W83795_REG_CHIPID) << 8);
1916 if ((device_id >> 4) != 0x795) {
1917 dev_dbg(&adapter->dev,
1918 "w83795: Detection failed at addr 0x%02hx, check %s\n",
1919 address, "device id\n");
1920 return -ENODEV;
1921 }
1922
1923 /* If Nuvoton chip, address of chip and W83795_REG_I2C_ADDR
1924 should match */
1925 if ((bank & 0x07) == 0) {
1926 i2c_addr = i2c_smbus_read_byte_data(client,
1927 W83795_REG_I2C_ADDR);
1928 if ((i2c_addr & 0x7f) != address) {
1929 dev_dbg(&adapter->dev,
1930 "w83795: Detection failed at addr 0x%02hx, "
1931 "check %s\n", address, "i2c addr");
1932 return -ENODEV;
1933 }
1934 }
1935
1936 /* Check 795 chip type: 795G or 795ADG
1937 Usually we don't write to chips during detection, but here we don't
1938 quite have the choice; hopefully it's OK, we are about to return
1939 success anyway */
1940 if ((bank & 0x07) != 0)
1941 i2c_smbus_write_byte_data(client, W83795_REG_BANKSEL,
1942 bank & ~0x07);
1943 config = i2c_smbus_read_byte_data(client, W83795_REG_CONFIG);
1944 if (config & W83795_REG_CONFIG_CONFIG48)
1945 chip_name = "w83795adg";
1946 else
1947 chip_name = "w83795g";
1948
1949 strlcpy(info->type, chip_name, I2C_NAME_SIZE);
1950 dev_info(&adapter->dev, "Found %s rev. %c at 0x%02hx\n", chip_name,
1951 'A' + (device_id & 0xf), address);
1952
1953 return 0;
1954 }
1955
1956 static int w83795_handle_files(struct device *dev, int (*fn)(struct device *,
1957 const struct device_attribute *))
1958 {
1959 struct w83795_data *data = dev_get_drvdata(dev);
1960 int err, i, j;
1961
1962 for (i = 0; i < ARRAY_SIZE(w83795_in); i++) {
1963 if (!(data->has_in & (1 << i)))
1964 continue;
1965 for (j = 0; j < ARRAY_SIZE(w83795_in[0]); j++) {
1966 if (j == 4 && !data->enable_beep)
1967 continue;
1968 err = fn(dev, &w83795_in[i][j].dev_attr);
1969 if (err)
1970 return err;
1971 }
1972 }
1973
1974 for (i = 0; i < ARRAY_SIZE(w83795_fan); i++) {
1975 if (!(data->has_fan & (1 << i)))
1976 continue;
1977 for (j = 0; j < ARRAY_SIZE(w83795_fan[0]); j++) {
1978 if (j == 3 && !data->enable_beep)
1979 continue;
1980 err = fn(dev, &w83795_fan[i][j].dev_attr);
1981 if (err)
1982 return err;
1983 }
1984 }
1985
1986 for (i = 0; i < ARRAY_SIZE(w83795_tss); i++) {
1987 j = w83795_tss_useful(data, i);
1988 if (!j)
1989 continue;
1990 err = fn(dev, &w83795_tss[i].dev_attr);
1991 if (err)
1992 return err;
1993 }
1994
1995 for (i = 0; i < ARRAY_SIZE(sda_single_files); i++) {
1996 err = fn(dev, &sda_single_files[i].dev_attr);
1997 if (err)
1998 return err;
1999 }
2000
2001 if (data->enable_beep) {
2002 for (i = 0; i < ARRAY_SIZE(sda_beep_files); i++) {
2003 err = fn(dev, &sda_beep_files[i].dev_attr);
2004 if (err)
2005 return err;
2006 }
2007 }
2008
2009 #ifdef CONFIG_SENSORS_W83795_FANCTRL
2010 for (i = 0; i < data->has_pwm; i++) {
2011 for (j = 0; j < ARRAY_SIZE(w83795_pwm[0]); j++) {
2012 err = fn(dev, &w83795_pwm[i][j].dev_attr);
2013 if (err)
2014 return err;
2015 }
2016 }
2017 #endif
2018
2019 for (i = 0; i < ARRAY_SIZE(w83795_temp); i++) {
2020 if (!(data->has_temp & (1 << i)))
2021 continue;
2022 #ifdef CONFIG_SENSORS_W83795_FANCTRL
2023 for (j = 0; j < ARRAY_SIZE(w83795_temp[0]); j++) {
2024 #else
2025 for (j = 0; j < 8; j++) {
2026 #endif
2027 if (j == 7 && !data->enable_beep)
2028 continue;
2029 err = fn(dev, &w83795_temp[i][j].dev_attr);
2030 if (err)
2031 return err;
2032 }
2033 }
2034
2035 if (data->enable_dts) {
2036 for (i = 0; i < ARRAY_SIZE(w83795_dts); i++) {
2037 if (!(data->has_dts & (1 << i)))
2038 continue;
2039 for (j = 0; j < ARRAY_SIZE(w83795_dts[0]); j++) {
2040 if (j == 7 && !data->enable_beep)
2041 continue;
2042 err = fn(dev, &w83795_dts[i][j].dev_attr);
2043 if (err)
2044 return err;
2045 }
2046 }
2047 }
2048
2049 return 0;
2050 }
2051
2052 /* We need a wrapper that fits in w83795_handle_files */
2053 static int device_remove_file_wrapper(struct device *dev,
2054 const struct device_attribute *attr)
2055 {
2056 device_remove_file(dev, attr);
2057 return 0;
2058 }
2059
2060 static void w83795_check_dynamic_in_limits(struct i2c_client *client)
2061 {
2062 struct w83795_data *data = i2c_get_clientdata(client);
2063 u8 vid_ctl;
2064 int i, err_max, err_min;
2065
2066 vid_ctl = w83795_read(client, W83795_REG_VID_CTRL);
2067
2068 /* Return immediately if VRM isn't configured */
2069 if ((vid_ctl & 0x07) == 0x00 || (vid_ctl & 0x07) == 0x07)
2070 return;
2071
2072 data->has_dyn_in = (vid_ctl >> 3) & 0x07;
2073 for (i = 0; i < 2; i++) {
2074 if (!(data->has_dyn_in & (1 << i)))
2075 continue;
2076
2077 /* Voltage limits in dynamic mode, switch to read-only */
2078 err_max = sysfs_chmod_file(&client->dev.kobj,
2079 &w83795_in[i][2].dev_attr.attr,
2080 S_IRUGO);
2081 err_min = sysfs_chmod_file(&client->dev.kobj,
2082 &w83795_in[i][3].dev_attr.attr,
2083 S_IRUGO);
2084 if (err_max || err_min)
2085 dev_warn(&client->dev, "Failed to set in%d limits "
2086 "read-only (%d, %d)\n", i, err_max, err_min);
2087 else
2088 dev_info(&client->dev, "in%d limits set dynamically "
2089 "from VID\n", i);
2090 }
2091 }
2092
2093 /* Check pins that can be used for either temperature or voltage monitoring */
2094 static void w83795_apply_temp_config(struct w83795_data *data, u8 config,
2095 int temp_chan, int in_chan)
2096 {
2097 /* config is a 2-bit value */
2098 switch (config) {
2099 case 0x2: /* Voltage monitoring */
2100 data->has_in |= 1 << in_chan;
2101 break;
2102 case 0x1: /* Thermal diode */
2103 if (temp_chan >= 4)
2104 break;
2105 data->temp_mode |= 1 << temp_chan;
2106 /* fall through */
2107 case 0x3: /* Thermistor */
2108 data->has_temp |= 1 << temp_chan;
2109 break;
2110 }
2111 }
2112
2113 static int w83795_probe(struct i2c_client *client,
2114 const struct i2c_device_id *id)
2115 {
2116 int i;
2117 u8 tmp;
2118 struct device *dev = &client->dev;
2119 struct w83795_data *data;
2120 int err;
2121
2122 data = kzalloc(sizeof(struct w83795_data), GFP_KERNEL);
2123 if (!data) {
2124 err = -ENOMEM;
2125 goto exit;
2126 }
2127
2128 i2c_set_clientdata(client, data);
2129 data->chip_type = id->driver_data;
2130 data->bank = i2c_smbus_read_byte_data(client, W83795_REG_BANKSEL);
2131 mutex_init(&data->update_lock);
2132
2133 /* Initialize the chip */
2134 w83795_init_client(client);
2135
2136 /* Check which voltages and fans are present */
2137 data->has_in = w83795_read(client, W83795_REG_VOLT_CTRL1)
2138 | (w83795_read(client, W83795_REG_VOLT_CTRL2) << 8);
2139 data->has_fan = w83795_read(client, W83795_REG_FANIN_CTRL1)
2140 | (w83795_read(client, W83795_REG_FANIN_CTRL2) << 8);
2141
2142 /* Check which analog temperatures and extra voltages are present */
2143 tmp = w83795_read(client, W83795_REG_TEMP_CTRL1);
2144 if (tmp & 0x20)
2145 data->enable_dts = 1;
2146 w83795_apply_temp_config(data, (tmp >> 2) & 0x3, 5, 16);
2147 w83795_apply_temp_config(data, tmp & 0x3, 4, 15);
2148 tmp = w83795_read(client, W83795_REG_TEMP_CTRL2);
2149 w83795_apply_temp_config(data, tmp >> 6, 3, 20);
2150 w83795_apply_temp_config(data, (tmp >> 4) & 0x3, 2, 19);
2151 w83795_apply_temp_config(data, (tmp >> 2) & 0x3, 1, 18);
2152 w83795_apply_temp_config(data, tmp & 0x3, 0, 17);
2153
2154 /* Check DTS enable status */
2155 if (data->enable_dts) {
2156 if (1 & w83795_read(client, W83795_REG_DTSC))
2157 data->enable_dts |= 2;
2158 data->has_dts = w83795_read(client, W83795_REG_DTSE);
2159 }
2160
2161 /* Report PECI Tbase values */
2162 if (data->enable_dts == 1) {
2163 for (i = 0; i < 8; i++) {
2164 if (!(data->has_dts & (1 << i)))
2165 continue;
2166 tmp = w83795_read(client, W83795_REG_PECI_TBASE(i));
2167 dev_info(&client->dev,
2168 "PECI agent %d Tbase temperature: %u\n",
2169 i + 1, (unsigned int)tmp & 0x7f);
2170 }
2171 }
2172
2173 data->has_gain = w83795_read(client, W83795_REG_VMIGB_CTRL) & 0x0f;
2174
2175 /* pwm and smart fan */
2176 if (data->chip_type == w83795g)
2177 data->has_pwm = 8;
2178 else
2179 data->has_pwm = 2;
2180
2181 /* Check if BEEP pin is available */
2182 if (data->chip_type == w83795g) {
2183 /* The W83795G has a dedicated BEEP pin */
2184 data->enable_beep = 1;
2185 } else {
2186 /* The W83795ADG has a shared pin for OVT# and BEEP, so you
2187 * can't have both */
2188 tmp = w83795_read(client, W83795_REG_OVT_CFG);
2189 if ((tmp & OVT_CFG_SEL) == 0)
2190 data->enable_beep = 1;
2191 }
2192
2193 err = w83795_handle_files(dev, device_create_file);
2194 if (err)
2195 goto exit_remove;
2196
2197 if (data->chip_type == w83795g)
2198 w83795_check_dynamic_in_limits(client);
2199
2200 data->hwmon_dev = hwmon_device_register(dev);
2201 if (IS_ERR(data->hwmon_dev)) {
2202 err = PTR_ERR(data->hwmon_dev);
2203 goto exit_remove;
2204 }
2205
2206 return 0;
2207
2208 exit_remove:
2209 w83795_handle_files(dev, device_remove_file_wrapper);
2210 kfree(data);
2211 exit:
2212 return err;
2213 }
2214
2215 static int w83795_remove(struct i2c_client *client)
2216 {
2217 struct w83795_data *data = i2c_get_clientdata(client);
2218
2219 hwmon_device_unregister(data->hwmon_dev);
2220 w83795_handle_files(&client->dev, device_remove_file_wrapper);
2221 kfree(data);
2222
2223 return 0;
2224 }
2225
2226
2227 static const struct i2c_device_id w83795_id[] = {
2228 { "w83795g", w83795g },
2229 { "w83795adg", w83795adg },
2230 { }
2231 };
2232 MODULE_DEVICE_TABLE(i2c, w83795_id);
2233
2234 static struct i2c_driver w83795_driver = {
2235 .driver = {
2236 .name = "w83795",
2237 },
2238 .probe = w83795_probe,
2239 .remove = w83795_remove,
2240 .id_table = w83795_id,
2241
2242 .class = I2C_CLASS_HWMON,
2243 .detect = w83795_detect,
2244 .address_list = normal_i2c,
2245 };
2246
2247 static int __init sensors_w83795_init(void)
2248 {
2249 return i2c_add_driver(&w83795_driver);
2250 }
2251
2252 static void __exit sensors_w83795_exit(void)
2253 {
2254 i2c_del_driver(&w83795_driver);
2255 }
2256
2257 MODULE_AUTHOR("Wei Song, Jean Delvare <khali@linux-fr.org>");
2258 MODULE_DESCRIPTION("W83795G/ADG hardware monitoring driver");
2259 MODULE_LICENSE("GPL");
2260
2261 module_init(sensors_w83795_init);
2262 module_exit(sensors_w83795_exit);
kernel-based virtual machine