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hwmon: (w83795) Use dev_get_drvdata() where possible
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / hwmon / w83795.c
blobe916c04e86813641b150759240bd630e55dfd4dc
1 /*
2 * w83795.c - Linux kernel driver for hardware monitoring
3 * Copyright (C) 2008 Nuvoton Technology Corp.
4 * Wei Song
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation - version 2.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
18 * 02110-1301 USA.
19 *
20 * Supports following chips:
21 *
22 * Chip #vin #fanin #pwm #temp #dts wchipid vendid i2c ISA
23 * w83795g 21 14 8 6 8 0x79 0x5ca3 yes no
24 * w83795adg 18 14 2 6 8 0x79 0x5ca3 yes no
25 */
26
27 #include <linux/kernel.h>
28 #include <linux/module.h>
29 #include <linux/init.h>
30 #include <linux/slab.h>
31 #include <linux/i2c.h>
32 #include <linux/hwmon.h>
33 #include <linux/hwmon-sysfs.h>
34 #include <linux/err.h>
35 #include <linux/mutex.h>
36 #include <linux/delay.h>
37
38 /* Addresses to scan */
39 static const unsigned short normal_i2c[] = {
40 0x2c, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END
41 };
42
43
44 static int reset;
45 module_param(reset, bool, 0);
46 MODULE_PARM_DESC(reset, "Set to 1 to reset chip, not recommended");
47
48
49 #define W83795_REG_BANKSEL 0x00
50 #define W83795_REG_VENDORID 0xfd
51 #define W83795_REG_CHIPID 0xfe
52 #define W83795_REG_DEVICEID 0xfb
53 #define W83795_REG_DEVICEID_A 0xff
54
55 #define W83795_REG_I2C_ADDR 0xfc
56 #define W83795_REG_CONFIG 0x01
57 #define W83795_REG_CONFIG_CONFIG48 0x04
58 #define W83795_REG_CONFIG_START 0x01
59
60 /* Multi-Function Pin Ctrl Registers */
61 #define W83795_REG_VOLT_CTRL1 0x02
62 #define W83795_REG_VOLT_CTRL2 0x03
63 #define W83795_REG_TEMP_CTRL1 0x04
64 #define W83795_REG_TEMP_CTRL2 0x05
65 #define W83795_REG_FANIN_CTRL1 0x06
66 #define W83795_REG_FANIN_CTRL2 0x07
67 #define W83795_REG_VMIGB_CTRL 0x08
68
69 #define TEMP_READ 0
70 #define TEMP_CRIT 1
71 #define TEMP_CRIT_HYST 2
72 #define TEMP_WARN 3
73 #define TEMP_WARN_HYST 4
74 /* only crit and crit_hyst affect real-time alarm status
75 * current crit crit_hyst warn warn_hyst */
76 static const u16 W83795_REG_TEMP[][5] = {
77 {0x21, 0x96, 0x97, 0x98, 0x99}, /* TD1/TR1 */
78 {0x22, 0x9a, 0x9b, 0x9c, 0x9d}, /* TD2/TR2 */
79 {0x23, 0x9e, 0x9f, 0xa0, 0xa1}, /* TD3/TR3 */
80 {0x24, 0xa2, 0xa3, 0xa4, 0xa5}, /* TD4/TR4 */
81 {0x1f, 0xa6, 0xa7, 0xa8, 0xa9}, /* TR5 */
82 {0x20, 0xaa, 0xab, 0xac, 0xad}, /* TR6 */
83 };
84
85 #define IN_READ 0
86 #define IN_MAX 1
87 #define IN_LOW 2
88 static const u16 W83795_REG_IN[][3] = {
89 /* Current, HL, LL */
90 {0x10, 0x70, 0x71}, /* VSEN1 */
91 {0x11, 0x72, 0x73}, /* VSEN2 */
92 {0x12, 0x74, 0x75}, /* VSEN3 */
93 {0x13, 0x76, 0x77}, /* VSEN4 */
94 {0x14, 0x78, 0x79}, /* VSEN5 */
95 {0x15, 0x7a, 0x7b}, /* VSEN6 */
96 {0x16, 0x7c, 0x7d}, /* VSEN7 */
97 {0x17, 0x7e, 0x7f}, /* VSEN8 */
98 {0x18, 0x80, 0x81}, /* VSEN9 */
99 {0x19, 0x82, 0x83}, /* VSEN10 */
100 {0x1A, 0x84, 0x85}, /* VSEN11 */
101 {0x1B, 0x86, 0x87}, /* VTT */
102 {0x1C, 0x88, 0x89}, /* 3VDD */
103 {0x1D, 0x8a, 0x8b}, /* 3VSB */
104 {0x1E, 0x8c, 0x8d}, /* VBAT */
105 {0x1F, 0xa6, 0xa7}, /* VSEN12 */
106 {0x20, 0xaa, 0xab}, /* VSEN13 */
107 {0x21, 0x96, 0x97}, /* VSEN14 */
108 {0x22, 0x9a, 0x9b}, /* VSEN15 */
109 {0x23, 0x9e, 0x9f}, /* VSEN16 */
110 {0x24, 0xa2, 0xa3}, /* VSEN17 */
111 };
112 #define W83795_REG_VRLSB 0x3C
113
114 static const u8 W83795_REG_IN_HL_LSB[] = {
115 0x8e, /* VSEN1-4 */
116 0x90, /* VSEN5-8 */
117 0x92, /* VSEN9-11 */
118 0x94, /* VTT, 3VDD, 3VSB, 3VBAT */
119 0xa8, /* VSEN12 */
120 0xac, /* VSEN13 */
121 0x98, /* VSEN14 */
122 0x9c, /* VSEN15 */
123 0xa0, /* VSEN16 */
124 0xa4, /* VSEN17 */
125 };
126
127 #define IN_LSB_REG(index, type) \
128 (((type) == 1) ? W83795_REG_IN_HL_LSB[(index)] \
129 : (W83795_REG_IN_HL_LSB[(index)] + 1))
130
131 #define IN_LSB_SHIFT 0
132 #define IN_LSB_IDX 1
133 static const u8 IN_LSB_SHIFT_IDX[][2] = {
134 /* High/Low LSB shift, LSB No. */
135 {0x00, 0x00}, /* VSEN1 */
136 {0x02, 0x00}, /* VSEN2 */
137 {0x04, 0x00}, /* VSEN3 */
138 {0x06, 0x00}, /* VSEN4 */
139 {0x00, 0x01}, /* VSEN5 */
140 {0x02, 0x01}, /* VSEN6 */
141 {0x04, 0x01}, /* VSEN7 */
142 {0x06, 0x01}, /* VSEN8 */
143 {0x00, 0x02}, /* VSEN9 */
144 {0x02, 0x02}, /* VSEN10 */
145 {0x04, 0x02}, /* VSEN11 */
146 {0x00, 0x03}, /* VTT */
147 {0x02, 0x03}, /* 3VDD */
148 {0x04, 0x03}, /* 3VSB */
149 {0x06, 0x03}, /* VBAT */
150 {0x06, 0x04}, /* VSEN12 */
151 {0x06, 0x05}, /* VSEN13 */
152 {0x06, 0x06}, /* VSEN14 */
153 {0x06, 0x07}, /* VSEN15 */
154 {0x06, 0x08}, /* VSEN16 */
155 {0x06, 0x09}, /* VSEN17 */
156 };
157
158
159 #define W83795_REG_FAN(index) (0x2E + (index))
160 #define W83795_REG_FAN_MIN_HL(index) (0xB6 + (index))
161 #define W83795_REG_FAN_MIN_LSB(index) (0xC4 + (index) / 2)
162 #define W83795_REG_FAN_MIN_LSB_SHIFT(index) \
163 (((index) & 1) ? 4 : 0)
164
165 #define W83795_REG_VID_CTRL 0x6A
166
167 #define W83795_REG_ALARM(index) (0x41 + (index))
168 #define W83795_REG_BEEP(index) (0x50 + (index))
169
170 #define W83795_REG_CLR_CHASSIS 0x4D
171
172
173 #define W83795_REG_FCMS1 0x201
174 #define W83795_REG_FCMS2 0x208
175 #define W83795_REG_TFMR(index) (0x202 + (index))
176 #define W83795_REG_FOMC 0x20F
177
178 #define W83795_REG_TSS(index) (0x209 + (index))
179
180 #define PWM_OUTPUT 0
181 #define PWM_FREQ 1
182 #define PWM_START 2
183 #define PWM_NONSTOP 3
184 #define PWM_STOP_TIME 4
185 #define W83795_REG_PWM(index, nr) (0x210 + (nr) * 8 + (index))
186
187 #define W83795_REG_FTSH(index) (0x240 + (index) * 2)
188 #define W83795_REG_FTSL(index) (0x241 + (index) * 2)
189 #define W83795_REG_TFTS 0x250
190
191 #define TEMP_PWM_TTTI 0
192 #define TEMP_PWM_CTFS 1
193 #define TEMP_PWM_HCT 2
194 #define TEMP_PWM_HOT 3
195 #define W83795_REG_TTTI(index) (0x260 + (index))
196 #define W83795_REG_CTFS(index) (0x268 + (index))
197 #define W83795_REG_HT(index) (0x270 + (index))
198
199 #define SF4_TEMP 0
200 #define SF4_PWM 1
201 #define W83795_REG_SF4_TEMP(temp_num, index) \
202 (0x280 + 0x10 * (temp_num) + (index))
203 #define W83795_REG_SF4_PWM(temp_num, index) \
204 (0x288 + 0x10 * (temp_num) + (index))
205
206 #define W83795_REG_DTSC 0x301
207 #define W83795_REG_DTSE 0x302
208 #define W83795_REG_DTS(index) (0x26 + (index))
209 #define W83795_REG_PECI_TBASE(index) (0x320 + (index))
210
211 #define DTS_CRIT 0
212 #define DTS_CRIT_HYST 1
213 #define DTS_WARN 2
214 #define DTS_WARN_HYST 3
215 #define W83795_REG_DTS_EXT(index) (0xB2 + (index))
216
217 #define SETUP_PWM_DEFAULT 0
218 #define SETUP_PWM_UPTIME 1
219 #define SETUP_PWM_DOWNTIME 2
220 #define W83795_REG_SETUP_PWM(index) (0x20C + (index))
221
222 static inline u16 in_from_reg(u8 index, u16 val)
223 {
224 /* 3VDD, 3VSB and VBAT: 6 mV/bit; other inputs: 2 mV/bit */
225 if (index >= 12 && index <= 14)
226 return val * 6;
227 else
228 return val * 2;
229 }
230
231 static inline u16 in_to_reg(u8 index, u16 val)
232 {
233 if (index >= 12 && index <= 14)
234 return val / 6;
235 else
236 return val / 2;
237 }
238
239 static inline unsigned long fan_from_reg(u16 val)
240 {
241 if ((val == 0xfff) || (val == 0))
242 return 0;
243 return 1350000UL / val;
244 }
245
246 static inline u16 fan_to_reg(long rpm)
247 {
248 if (rpm <= 0)
249 return 0x0fff;
250 return SENSORS_LIMIT((1350000 + (rpm >> 1)) / rpm, 1, 0xffe);
251 }
252
253 static inline unsigned long time_from_reg(u8 reg)
254 {
255 return reg * 100;
256 }
257
258 static inline u8 time_to_reg(unsigned long val)
259 {
260 return SENSORS_LIMIT((val + 50) / 100, 0, 0xff);
261 }
262
263 static inline long temp_from_reg(s8 reg)
264 {
265 return reg * 1000;
266 }
267
268 static inline s8 temp_to_reg(long val, s8 min, s8 max)
269 {
270 return SENSORS_LIMIT(val / 1000, min, max);
271 }
272
273 static const u16 pwm_freq_cksel0[16] = {
274 1024, 512, 341, 256, 205, 171, 146, 128,
275 85, 64, 32, 16, 8, 4, 2, 1
276 };
277
278 static unsigned int pwm_freq_from_reg(u8 reg, u16 clkin)
279 {
280 unsigned long base_clock;
281
282 if (reg & 0x80) {
283 base_clock = clkin * 1000 / ((clkin == 48000) ? 384 : 256);
284 return base_clock / ((reg & 0x7f) + 1);
285 } else
286 return pwm_freq_cksel0[reg & 0x0f];
287 }
288
289 static u8 pwm_freq_to_reg(unsigned long val, u16 clkin)
290 {
291 unsigned long base_clock;
292 u8 reg0, reg1;
293 unsigned long best0, best1;
294
295 /* Best fit for cksel = 0 */
296 for (reg0 = 0; reg0 < ARRAY_SIZE(pwm_freq_cksel0) - 1; reg0++) {
297 if (val > (pwm_freq_cksel0[reg0] +
298 pwm_freq_cksel0[reg0 + 1]) / 2)
299 break;
300 }
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 = SENSORS_LIMIT(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; /* Enable PECI and SB-TSI,
345 * bit 0: =1 enable, =0 disable,
346 * bit 1: =1 AMD SB-TSI, =0 Intel PECI */
347 u8 has_dts; /* Enable monitor DTS temp */
348 s8 dts[8]; /* Register value */
349 u8 dts_read_vrlsb[8]; /* Register value */
350 s8 dts_ext[4]; /* Register value */
351
352 u8 has_pwm; /* 795g supports 8 pwm, 795adg only supports 2,
353 * no config register, only affected by chip
354 * type */
355 u8 pwm[8][5]; /* Register value, output, freq, start,
356 * non stop, stop time */
357 u16 clkin; /* CLKIN frequency in kHz */
358 u8 pwm_fcms[2]; /* Register value */
359 u8 pwm_tfmr[6]; /* Register value */
360 u8 pwm_fomc; /* Register value */
361
362 u16 target_speed[8]; /* Register value, target speed for speed
363 * cruise */
364 u8 tol_speed; /* tolerance of target speed */
365 u8 pwm_temp[6][4]; /* TTTI, CTFS, HCT, HOT */
366 u8 sf4_reg[6][2][7]; /* 6 temp, temp/dcpwm, 7 registers */
367
368 u8 setup_pwm[3]; /* Register value */
369
370 u8 alarms[6]; /* Register value */
371 u8 beeps[6]; /* Register value */
372
373 char valid;
374 char valid_limits;
375 char valid_pwm_config;
376 };
377
378 /*
379 * Hardware access
380 * We assume that nobdody can change the bank outside the driver.
381 */
382
383 /* Must be called with data->update_lock held, except during initialization */
384 static int w83795_set_bank(struct i2c_client *client, u8 bank)
385 {
386 struct w83795_data *data = i2c_get_clientdata(client);
387 int err;
388
389 /* If the same bank is already set, nothing to do */
390 if ((data->bank & 0x07) == bank)
391 return 0;
392
393 /* Change to new bank, preserve all other bits */
394 bank |= data->bank & ~0x07;
395 err = i2c_smbus_write_byte_data(client, W83795_REG_BANKSEL, bank);
396 if (err < 0) {
397 dev_err(&client->dev,
398 "Failed to set bank to %d, err %d\n",
399 (int)bank, err);
400 return err;
401 }
402 data->bank = bank;
403
404 return 0;
405 }
406
407 /* Must be called with data->update_lock held, except during initialization */
408 static u8 w83795_read(struct i2c_client *client, u16 reg)
409 {
410 int err;
411
412 err = w83795_set_bank(client, reg >> 8);
413 if (err < 0)
414 return 0x00; /* Arbitrary */
415
416 err = i2c_smbus_read_byte_data(client, reg & 0xff);
417 if (err < 0) {
418 dev_err(&client->dev,
419 "Failed to read from register 0x%03x, err %d\n",
420 (int)reg, err);
421 return 0x00; /* Arbitrary */
422 }
423 return err;
424 }
425
426 /* Must be called with data->update_lock held, except during initialization */
427 static int w83795_write(struct i2c_client *client, u16 reg, u8 value)
428 {
429 int err;
430
431 err = w83795_set_bank(client, reg >> 8);
432 if (err < 0)
433 return err;
434
435 err = i2c_smbus_write_byte_data(client, reg & 0xff, value);
436 if (err < 0)
437 dev_err(&client->dev,
438 "Failed to write to register 0x%03x, err %d\n",
439 (int)reg, err);
440 return err;
441 }
442
443 static void w83795_update_limits(struct i2c_client *client)
444 {
445 struct w83795_data *data = i2c_get_clientdata(client);
446 int i, limit;
447
448 /* Read the voltage limits */
449 for (i = 0; i < ARRAY_SIZE(data->in); i++) {
450 if (!(data->has_in & (1 << i)))
451 continue;
452 data->in[i][IN_MAX] =
453 w83795_read(client, W83795_REG_IN[i][IN_MAX]);
454 data->in[i][IN_LOW] =
455 w83795_read(client, W83795_REG_IN[i][IN_LOW]);
456 }
457 for (i = 0; i < ARRAY_SIZE(data->in_lsb); i++) {
458 if ((i == 2 && data->chip_type == w83795adg) ||
459 (i >= 4 && !(data->has_in & (1 << (i + 11)))))
460 continue;
461 data->in_lsb[i][IN_MAX] =
462 w83795_read(client, IN_LSB_REG(i, IN_MAX));
463 data->in_lsb[i][IN_LOW] =
464 w83795_read(client, IN_LSB_REG(i, IN_LOW));
465 }
466
467 /* Read the fan limits */
468 for (i = 0; i < ARRAY_SIZE(data->fan); i++) {
469 u8 lsb;
470
471 /* Each register contains LSB for 2 fans, but we want to
472 * read it only once to save time */
473 if ((i & 1) == 0 && (data->has_fan & (3 << i)))
474 lsb = w83795_read(client, W83795_REG_FAN_MIN_LSB(i));
475
476 if (!(data->has_fan & (1 << i)))
477 continue;
478 data->fan_min[i] =
479 w83795_read(client, W83795_REG_FAN_MIN_HL(i)) << 4;
480 data->fan_min[i] |=
481 (lsb >> W83795_REG_FAN_MIN_LSB_SHIFT(i)) & 0x0F;
482 }
483
484 /* Read the temperature limits */
485 for (i = 0; i < ARRAY_SIZE(data->temp); i++) {
486 if (!(data->has_temp & (1 << i)))
487 continue;
488 for (limit = TEMP_CRIT; limit <= TEMP_WARN_HYST; limit++)
489 data->temp[i][limit] =
490 w83795_read(client, W83795_REG_TEMP[i][limit]);
491 }
492
493 /* Read the DTS limits */
494 if (data->enable_dts != 0) {
495 for (limit = DTS_CRIT; limit <= DTS_WARN_HYST; limit++)
496 data->dts_ext[limit] =
497 w83795_read(client, W83795_REG_DTS_EXT(limit));
498 }
499
500 /* Read beep settings */
501 for (i = 0; i < ARRAY_SIZE(data->beeps); i++)
502 data->beeps[i] = w83795_read(client, W83795_REG_BEEP(i));
503
504 data->valid_limits = 1;
505 }
506
507 static struct w83795_data *w83795_update_pwm_config(struct device *dev)
508 {
509 struct i2c_client *client = to_i2c_client(dev);
510 struct w83795_data *data = i2c_get_clientdata(client);
511 int i, tmp;
512
513 mutex_lock(&data->update_lock);
514
515 if (data->valid_pwm_config)
516 goto END;
517
518 /* Read temperature source selection */
519 for (i = 0; i < ARRAY_SIZE(data->temp_src); i++)
520 data->temp_src[i] = w83795_read(client, W83795_REG_TSS(i));
521
522 /* Read automatic fan speed control settings */
523 data->pwm_fcms[0] = w83795_read(client, W83795_REG_FCMS1);
524 data->pwm_fcms[1] = w83795_read(client, W83795_REG_FCMS2);
525 for (i = 0; i < ARRAY_SIZE(data->pwm_tfmr); i++)
526 data->pwm_tfmr[i] = w83795_read(client, W83795_REG_TFMR(i));
527 data->pwm_fomc = w83795_read(client, W83795_REG_FOMC);
528 for (i = 0; i < data->has_pwm; i++) {
529 for (tmp = PWM_FREQ; tmp <= PWM_STOP_TIME; tmp++)
530 data->pwm[i][tmp] =
531 w83795_read(client, W83795_REG_PWM(i, tmp));
532 }
533 for (i = 0; i < ARRAY_SIZE(data->target_speed); i++) {
534 data->target_speed[i] =
535 w83795_read(client, W83795_REG_FTSH(i)) << 4;
536 data->target_speed[i] |=
537 w83795_read(client, W83795_REG_FTSL(i)) >> 4;
538 }
539 data->tol_speed = w83795_read(client, W83795_REG_TFTS) & 0x3f;
540
541 for (i = 0; i < ARRAY_SIZE(data->pwm_temp); i++) {
542 data->pwm_temp[i][TEMP_PWM_TTTI] =
543 w83795_read(client, W83795_REG_TTTI(i)) & 0x7f;
544 data->pwm_temp[i][TEMP_PWM_CTFS] =
545 w83795_read(client, W83795_REG_CTFS(i));
546 tmp = w83795_read(client, W83795_REG_HT(i));
547 data->pwm_temp[i][TEMP_PWM_HCT] = (tmp >> 4) & 0x0f;
548 data->pwm_temp[i][TEMP_PWM_HOT] = tmp & 0x0f;
549 }
550
551 /* Read SmartFanIV trip points */
552 for (i = 0; i < ARRAY_SIZE(data->sf4_reg); i++) {
553 for (tmp = 0; tmp < 7; tmp++) {
554 data->sf4_reg[i][SF4_TEMP][tmp] =
555 w83795_read(client,
556 W83795_REG_SF4_TEMP(i, tmp));
557 data->sf4_reg[i][SF4_PWM][tmp] =
558 w83795_read(client, W83795_REG_SF4_PWM(i, tmp));
559 }
560 }
561
562 /* Read setup PWM */
563 for (i = 0; i < ARRAY_SIZE(data->setup_pwm); i++)
564 data->setup_pwm[i] =
565 w83795_read(client, W83795_REG_SETUP_PWM(i));
566
567 data->valid_pwm_config = 1;
568
569 END:
570 mutex_unlock(&data->update_lock);
571 return data;
572 }
573
574 static struct w83795_data *w83795_update_device(struct device *dev)
575 {
576 struct i2c_client *client = to_i2c_client(dev);
577 struct w83795_data *data = i2c_get_clientdata(client);
578 u16 tmp;
579 int i;
580
581 mutex_lock(&data->update_lock);
582
583 if (!data->valid_limits)
584 w83795_update_limits(client);
585
586 if (!(time_after(jiffies, data->last_updated + HZ * 2)
587 || !data->valid))
588 goto END;
589
590 /* Update the voltages value */
591 for (i = 0; i < ARRAY_SIZE(data->in); i++) {
592 if (!(data->has_in & (1 << i)))
593 continue;
594 tmp = w83795_read(client, W83795_REG_IN[i][IN_READ]) << 2;
595 tmp |= w83795_read(client, W83795_REG_VRLSB) >> 6;
596 data->in[i][IN_READ] = tmp;
597 }
598
599 /* in0-2 can have dynamic limits (W83795G only) */
600 if (data->has_dyn_in) {
601 u8 lsb_max = w83795_read(client, IN_LSB_REG(0, IN_MAX));
602 u8 lsb_low = w83795_read(client, IN_LSB_REG(0, IN_LOW));
603
604 for (i = 0; i < 3; i++) {
605 if (!(data->has_dyn_in & (1 << i)))
606 continue;
607 data->in[i][IN_MAX] =
608 w83795_read(client, W83795_REG_IN[i][IN_MAX]);
609 data->in[i][IN_LOW] =
610 w83795_read(client, W83795_REG_IN[i][IN_LOW]);
611 data->in_lsb[i][IN_MAX] = (lsb_max >> (2 * i)) & 0x03;
612 data->in_lsb[i][IN_LOW] = (lsb_low >> (2 * i)) & 0x03;
613 }
614 }
615
616 /* Update fan */
617 for (i = 0; i < ARRAY_SIZE(data->fan); i++) {
618 if (!(data->has_fan & (1 << i)))
619 continue;
620 data->fan[i] = w83795_read(client, W83795_REG_FAN(i)) << 4;
621 data->fan[i] |=
622 (w83795_read(client, W83795_REG_VRLSB) >> 4) & 0x0F;
623 }
624
625 /* Update temperature */
626 for (i = 0; i < ARRAY_SIZE(data->temp); i++) {
627 data->temp[i][TEMP_READ] =
628 w83795_read(client, W83795_REG_TEMP[i][TEMP_READ]);
629 data->temp_read_vrlsb[i] =
630 w83795_read(client, W83795_REG_VRLSB);
631 }
632
633 /* Update dts temperature */
634 if (data->enable_dts != 0) {
635 for (i = 0; i < ARRAY_SIZE(data->dts); i++) {
636 if (!(data->has_dts & (1 << i)))
637 continue;
638 data->dts[i] =
639 w83795_read(client, W83795_REG_DTS(i));
640 data->dts_read_vrlsb[i] =
641 w83795_read(client, W83795_REG_VRLSB);
642 }
643 }
644
645 /* Update pwm output */
646 for (i = 0; i < data->has_pwm; i++) {
647 data->pwm[i][PWM_OUTPUT] =
648 w83795_read(client, W83795_REG_PWM(i, PWM_OUTPUT));
649 }
650
651 /* update alarm */
652 for (i = 0; i < ARRAY_SIZE(data->alarms); i++)
653 data->alarms[i] = w83795_read(client, W83795_REG_ALARM(i));
654
655 data->last_updated = jiffies;
656 data->valid = 1;
657
658 END:
659 mutex_unlock(&data->update_lock);
660 return data;
661 }
662
663 /*
664 * Sysfs attributes
665 */
666
667 #define ALARM_STATUS 0
668 #define BEEP_ENABLE 1
669 static ssize_t
670 show_alarm_beep(struct device *dev, struct device_attribute *attr, char *buf)
671 {
672 struct w83795_data *data = w83795_update_device(dev);
673 struct sensor_device_attribute_2 *sensor_attr =
674 to_sensor_dev_attr_2(attr);
675 int nr = sensor_attr->nr;
676 int index = sensor_attr->index >> 3;
677 int bit = sensor_attr->index & 0x07;
678 u8 val;
679
680 if (ALARM_STATUS == nr) {
681 val = (data->alarms[index] >> (bit)) & 1;
682 } else { /* BEEP_ENABLE */
683 val = (data->beeps[index] >> (bit)) & 1;
684 }
685
686 return sprintf(buf, "%u\n", val);
687 }
688
689 static ssize_t
690 store_beep(struct device *dev, struct device_attribute *attr,
691 const char *buf, size_t count)
692 {
693 struct i2c_client *client = to_i2c_client(dev);
694 struct w83795_data *data = i2c_get_clientdata(client);
695 struct sensor_device_attribute_2 *sensor_attr =
696 to_sensor_dev_attr_2(attr);
697 int index = sensor_attr->index >> 3;
698 int shift = sensor_attr->index & 0x07;
699 u8 beep_bit = 1 << shift;
700 unsigned long val;
701
702 if (strict_strtoul(buf, 10, &val) < 0)
703 return -EINVAL;
704 if (val != 0 && val != 1)
705 return -EINVAL;
706
707 mutex_lock(&data->update_lock);
708 data->beeps[index] = w83795_read(client, W83795_REG_BEEP(index));
709 data->beeps[index] &= ~beep_bit;
710 data->beeps[index] |= val << shift;
711 w83795_write(client, W83795_REG_BEEP(index), data->beeps[index]);
712 mutex_unlock(&data->update_lock);
713
714 return count;
715 }
716
717 /* Write any value to clear chassis alarm */
718 static ssize_t
719 store_chassis_clear(struct device *dev,
720 struct device_attribute *attr, const char *buf,
721 size_t count)
722 {
723 struct i2c_client *client = to_i2c_client(dev);
724 struct w83795_data *data = i2c_get_clientdata(client);
725 u8 val;
726
727 mutex_lock(&data->update_lock);
728 val = w83795_read(client, W83795_REG_CLR_CHASSIS);
729 val |= 0x80;
730 w83795_write(client, W83795_REG_CLR_CHASSIS, val);
731 mutex_unlock(&data->update_lock);
732 return count;
733 }
734
735 #define FAN_INPUT 0
736 #define FAN_MIN 1
737 static ssize_t
738 show_fan(struct device *dev, struct device_attribute *attr, char *buf)
739 {
740 struct sensor_device_attribute_2 *sensor_attr =
741 to_sensor_dev_attr_2(attr);
742 int nr = sensor_attr->nr;
743 int index = sensor_attr->index;
744 struct w83795_data *data = w83795_update_device(dev);
745 u16 val;
746
747 if (FAN_INPUT == nr)
748 val = data->fan[index] & 0x0fff;
749 else
750 val = data->fan_min[index] & 0x0fff;
751
752 return sprintf(buf, "%lu\n", fan_from_reg(val));
753 }
754
755 static ssize_t
756 store_fan_min(struct device *dev, struct device_attribute *attr,
757 const char *buf, size_t count)
758 {
759 struct sensor_device_attribute_2 *sensor_attr =
760 to_sensor_dev_attr_2(attr);
761 int index = sensor_attr->index;
762 struct i2c_client *client = to_i2c_client(dev);
763 struct w83795_data *data = i2c_get_clientdata(client);
764 unsigned long val;
765
766 if (strict_strtoul(buf, 10, &val))
767 return -EINVAL;
768 val = fan_to_reg(val);
769
770 mutex_lock(&data->update_lock);
771 data->fan_min[index] = val;
772 w83795_write(client, W83795_REG_FAN_MIN_HL(index), (val >> 4) & 0xff);
773 val &= 0x0f;
774 if (index & 1) {
775 val <<= 4;
776 val |= w83795_read(client, W83795_REG_FAN_MIN_LSB(index))
777 & 0x0f;
778 } else {
779 val |= w83795_read(client, W83795_REG_FAN_MIN_LSB(index))
780 & 0xf0;
781 }
782 w83795_write(client, W83795_REG_FAN_MIN_LSB(index), val & 0xff);
783 mutex_unlock(&data->update_lock);
784
785 return count;
786 }
787
788 static ssize_t
789 show_pwm(struct device *dev, struct device_attribute *attr, char *buf)
790 {
791 struct w83795_data *data;
792 struct sensor_device_attribute_2 *sensor_attr =
793 to_sensor_dev_attr_2(attr);
794 int nr = sensor_attr->nr;
795 int index = sensor_attr->index;
796 unsigned int val;
797
798 data = nr == PWM_OUTPUT ? w83795_update_device(dev)
799 : w83795_update_pwm_config(dev);
800
801 switch (nr) {
802 case PWM_STOP_TIME:
803 val = time_from_reg(data->pwm[index][nr]);
804 break;
805 case PWM_FREQ:
806 val = pwm_freq_from_reg(data->pwm[index][nr], data->clkin);
807 break;
808 default:
809 val = data->pwm[index][nr];
810 break;
811 }
812
813 return sprintf(buf, "%u\n", val);
814 }
815
816 static ssize_t
817 store_pwm(struct device *dev, struct device_attribute *attr,
818 const char *buf, size_t count)
819 {
820 struct i2c_client *client = to_i2c_client(dev);
821 struct w83795_data *data = i2c_get_clientdata(client);
822 struct sensor_device_attribute_2 *sensor_attr =
823 to_sensor_dev_attr_2(attr);
824 int nr = sensor_attr->nr;
825 int index = sensor_attr->index;
826 unsigned long val;
827
828 if (strict_strtoul(buf, 10, &val) < 0)
829 return -EINVAL;
830
831 mutex_lock(&data->update_lock);
832 switch (nr) {
833 case PWM_STOP_TIME:
834 val = time_to_reg(val);
835 break;
836 case PWM_FREQ:
837 val = pwm_freq_to_reg(val, data->clkin);
838 break;
839 default:
840 val = SENSORS_LIMIT(val, 0, 0xff);
841 break;
842 }
843 w83795_write(client, W83795_REG_PWM(index, nr), val);
844 data->pwm[index][nr] = val;
845 mutex_unlock(&data->update_lock);
846 return count;
847 }
848
849 static ssize_t
850 show_pwm_enable(struct device *dev, struct device_attribute *attr, char *buf)
851 {
852 struct sensor_device_attribute_2 *sensor_attr =
853 to_sensor_dev_attr_2(attr);
854 struct w83795_data *data = w83795_update_pwm_config(dev);
855 int index = sensor_attr->index;
856 u8 tmp;
857
858 if (1 == (data->pwm_fcms[0] & (1 << index))) {
859 tmp = 2;
860 goto out;
861 }
862 for (tmp = 0; tmp < 6; tmp++) {
863 if (data->pwm_tfmr[tmp] & (1 << index)) {
864 tmp = 3;
865 goto out;
866 }
867 }
868 if (data->pwm_fomc & (1 << index))
869 tmp = 0;
870 else
871 tmp = 1;
872
873 out:
874 return sprintf(buf, "%u\n", tmp);
875 }
876
877 static ssize_t
878 store_pwm_enable(struct device *dev, struct device_attribute *attr,
879 const char *buf, size_t count)
880 {
881 struct i2c_client *client = to_i2c_client(dev);
882 struct w83795_data *data = w83795_update_pwm_config(dev);
883 struct sensor_device_attribute_2 *sensor_attr =
884 to_sensor_dev_attr_2(attr);
885 int index = sensor_attr->index;
886 unsigned long val;
887 int i;
888
889 if (strict_strtoul(buf, 10, &val) < 0)
890 return -EINVAL;
891 if (val > 2)
892 return -EINVAL;
893
894 mutex_lock(&data->update_lock);
895 switch (val) {
896 case 0:
897 case 1:
898 data->pwm_fcms[0] &= ~(1 << index);
899 w83795_write(client, W83795_REG_FCMS1, data->pwm_fcms[0]);
900 for (i = 0; i < 6; i++) {
901 data->pwm_tfmr[i] &= ~(1 << index);
902 w83795_write(client, W83795_REG_TFMR(i),
903 data->pwm_tfmr[i]);
904 }
905 data->pwm_fomc |= 1 << index;
906 data->pwm_fomc ^= val << index;
907 w83795_write(client, W83795_REG_FOMC, data->pwm_fomc);
908 break;
909 case 2:
910 data->pwm_fcms[0] |= (1 << index);
911 w83795_write(client, W83795_REG_FCMS1, data->pwm_fcms[0]);
912 break;
913 }
914 mutex_unlock(&data->update_lock);
915 return count;
916 }
917
918 static ssize_t
919 show_temp_src(struct device *dev, struct device_attribute *attr, char *buf)
920 {
921 struct sensor_device_attribute_2 *sensor_attr =
922 to_sensor_dev_attr_2(attr);
923 struct w83795_data *data = w83795_update_pwm_config(dev);
924 int index = sensor_attr->index;
925 u8 val = index / 2;
926 u8 tmp = data->temp_src[val];
927
928 if (index & 1)
929 val = 4;
930 else
931 val = 0;
932 tmp >>= val;
933 tmp &= 0x0f;
934
935 return sprintf(buf, "%u\n", tmp);
936 }
937
938 static ssize_t
939 store_temp_src(struct device *dev, struct device_attribute *attr,
940 const char *buf, size_t count)
941 {
942 struct i2c_client *client = to_i2c_client(dev);
943 struct w83795_data *data = w83795_update_pwm_config(dev);
944 struct sensor_device_attribute_2 *sensor_attr =
945 to_sensor_dev_attr_2(attr);
946 int index = sensor_attr->index;
947 unsigned long tmp;
948 u8 val = index / 2;
949
950 if (strict_strtoul(buf, 10, &tmp) < 0)
951 return -EINVAL;
952 tmp = SENSORS_LIMIT(tmp, 0, 15);
953
954 mutex_lock(&data->update_lock);
955 if (index & 1) {
956 tmp <<= 4;
957 data->temp_src[val] &= 0x0f;
958 } else {
959 data->temp_src[val] &= 0xf0;
960 }
961 data->temp_src[val] |= tmp;
962 w83795_write(client, W83795_REG_TSS(val), data->temp_src[val]);
963 mutex_unlock(&data->update_lock);
964
965 return count;
966 }
967
968 #define TEMP_PWM_ENABLE 0
969 #define TEMP_PWM_FAN_MAP 1
970 static ssize_t
971 show_temp_pwm_enable(struct device *dev, struct device_attribute *attr,
972 char *buf)
973 {
974 struct w83795_data *data = w83795_update_pwm_config(dev);
975 struct sensor_device_attribute_2 *sensor_attr =
976 to_sensor_dev_attr_2(attr);
977 int nr = sensor_attr->nr;
978 int index = sensor_attr->index;
979 u8 tmp = 0xff;
980
981 switch (nr) {
982 case TEMP_PWM_ENABLE:
983 tmp = (data->pwm_fcms[1] >> index) & 1;
984 if (tmp)
985 tmp = 4;
986 else
987 tmp = 3;
988 break;
989 case TEMP_PWM_FAN_MAP:
990 tmp = data->pwm_tfmr[index];
991 break;
992 }
993
994 return sprintf(buf, "%u\n", tmp);
995 }
996
997 static ssize_t
998 store_temp_pwm_enable(struct device *dev, struct device_attribute *attr,
999 const char *buf, size_t count)
1000 {
1001 struct i2c_client *client = to_i2c_client(dev);
1002 struct w83795_data *data = w83795_update_pwm_config(dev);
1003 struct sensor_device_attribute_2 *sensor_attr =
1004 to_sensor_dev_attr_2(attr);
1005 int nr = sensor_attr->nr;
1006 int index = sensor_attr->index;
1007 unsigned long tmp;
1008
1009 if (strict_strtoul(buf, 10, &tmp) < 0)
1010 return -EINVAL;
1011
1012 switch (nr) {
1013 case TEMP_PWM_ENABLE:
1014 if ((tmp != 3) && (tmp != 4))
1015 return -EINVAL;
1016 tmp -= 3;
1017 mutex_lock(&data->update_lock);
1018 data->pwm_fcms[1] &= ~(1 << index);
1019 data->pwm_fcms[1] |= tmp << index;
1020 w83795_write(client, W83795_REG_FCMS2, data->pwm_fcms[1]);
1021 mutex_unlock(&data->update_lock);
1022 break;
1023 case TEMP_PWM_FAN_MAP:
1024 mutex_lock(&data->update_lock);
1025 tmp = SENSORS_LIMIT(tmp, 0, 0xff);
1026 w83795_write(client, W83795_REG_TFMR(index), tmp);
1027 data->pwm_tfmr[index] = tmp;
1028 mutex_unlock(&data->update_lock);
1029 break;
1030 }
1031 return count;
1032 }
1033
1034 #define FANIN_TARGET 0
1035 #define FANIN_TOL 1
1036 static ssize_t
1037 show_fanin(struct device *dev, struct device_attribute *attr, char *buf)
1038 {
1039 struct w83795_data *data = w83795_update_pwm_config(dev);
1040 struct sensor_device_attribute_2 *sensor_attr =
1041 to_sensor_dev_attr_2(attr);
1042 int nr = sensor_attr->nr;
1043 int index = sensor_attr->index;
1044 u16 tmp = 0;
1045
1046 switch (nr) {
1047 case FANIN_TARGET:
1048 tmp = fan_from_reg(data->target_speed[index]);
1049 break;
1050 case FANIN_TOL:
1051 tmp = data->tol_speed;
1052 break;
1053 }
1054
1055 return sprintf(buf, "%u\n", tmp);
1056 }
1057
1058 static ssize_t
1059 store_fanin(struct device *dev, struct device_attribute *attr,
1060 const char *buf, size_t count)
1061 {
1062 struct i2c_client *client = to_i2c_client(dev);
1063 struct w83795_data *data = i2c_get_clientdata(client);
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 unsigned long val;
1069
1070 if (strict_strtoul(buf, 10, &val) < 0)
1071 return -EINVAL;
1072
1073 mutex_lock(&data->update_lock);
1074 switch (nr) {
1075 case FANIN_TARGET:
1076 val = fan_to_reg(SENSORS_LIMIT(val, 0, 0xfff));
1077 w83795_write(client, W83795_REG_FTSH(index), (val >> 4) & 0xff);
1078 w83795_write(client, W83795_REG_FTSL(index), (val << 4) & 0xf0);
1079 data->target_speed[index] = val;
1080 break;
1081 case FANIN_TOL:
1082 val = SENSORS_LIMIT(val, 0, 0x3f);
1083 w83795_write(client, W83795_REG_TFTS, val);
1084 data->tol_speed = val;
1085 break;
1086 }
1087 mutex_unlock(&data->update_lock);
1088
1089 return count;
1090 }
1091
1092
1093 static ssize_t
1094 show_temp_pwm(struct device *dev, struct device_attribute *attr, char *buf)
1095 {
1096 struct w83795_data *data = w83795_update_pwm_config(dev);
1097 struct sensor_device_attribute_2 *sensor_attr =
1098 to_sensor_dev_attr_2(attr);
1099 int nr = sensor_attr->nr;
1100 int index = sensor_attr->index;
1101 long tmp = temp_from_reg(data->pwm_temp[index][nr]);
1102
1103 return sprintf(buf, "%ld\n", tmp);
1104 }
1105
1106 static ssize_t
1107 store_temp_pwm(struct device *dev, struct device_attribute *attr,
1108 const char *buf, size_t count)
1109 {
1110 struct i2c_client *client = to_i2c_client(dev);
1111 struct w83795_data *data = i2c_get_clientdata(client);
1112 struct sensor_device_attribute_2 *sensor_attr =
1113 to_sensor_dev_attr_2(attr);
1114 int nr = sensor_attr->nr;
1115 int index = sensor_attr->index;
1116 unsigned long val;
1117 u8 tmp;
1118
1119 if (strict_strtoul(buf, 10, &val) < 0)
1120 return -EINVAL;
1121 val /= 1000;
1122
1123 mutex_lock(&data->update_lock);
1124 switch (nr) {
1125 case TEMP_PWM_TTTI:
1126 val = SENSORS_LIMIT(val, 0, 0x7f);
1127 w83795_write(client, W83795_REG_TTTI(index), val);
1128 break;
1129 case TEMP_PWM_CTFS:
1130 val = SENSORS_LIMIT(val, 0, 0x7f);
1131 w83795_write(client, W83795_REG_CTFS(index), val);
1132 break;
1133 case TEMP_PWM_HCT:
1134 val = SENSORS_LIMIT(val, 0, 0x0f);
1135 tmp = w83795_read(client, W83795_REG_HT(index));
1136 tmp &= 0x0f;
1137 tmp |= (val << 4) & 0xf0;
1138 w83795_write(client, W83795_REG_HT(index), tmp);
1139 break;
1140 case TEMP_PWM_HOT:
1141 val = SENSORS_LIMIT(val, 0, 0x0f);
1142 tmp = w83795_read(client, W83795_REG_HT(index));
1143 tmp &= 0xf0;
1144 tmp |= val & 0x0f;
1145 w83795_write(client, W83795_REG_HT(index), tmp);
1146 break;
1147 }
1148 data->pwm_temp[index][nr] = val;
1149 mutex_unlock(&data->update_lock);
1150
1151 return count;
1152 }
1153
1154 static ssize_t
1155 show_sf4_pwm(struct device *dev, struct device_attribute *attr, char *buf)
1156 {
1157 struct w83795_data *data = w83795_update_pwm_config(dev);
1158 struct sensor_device_attribute_2 *sensor_attr =
1159 to_sensor_dev_attr_2(attr);
1160 int nr = sensor_attr->nr;
1161 int index = sensor_attr->index;
1162
1163 return sprintf(buf, "%u\n", data->sf4_reg[index][SF4_PWM][nr]);
1164 }
1165
1166 static ssize_t
1167 store_sf4_pwm(struct device *dev, struct device_attribute *attr,
1168 const char *buf, size_t count)
1169 {
1170 struct i2c_client *client = to_i2c_client(dev);
1171 struct w83795_data *data = i2c_get_clientdata(client);
1172 struct sensor_device_attribute_2 *sensor_attr =
1173 to_sensor_dev_attr_2(attr);
1174 int nr = sensor_attr->nr;
1175 int index = sensor_attr->index;
1176 unsigned long val;
1177
1178 if (strict_strtoul(buf, 10, &val) < 0)
1179 return -EINVAL;
1180
1181 mutex_lock(&data->update_lock);
1182 w83795_write(client, W83795_REG_SF4_PWM(index, nr), val);
1183 data->sf4_reg[index][SF4_PWM][nr] = val;
1184 mutex_unlock(&data->update_lock);
1185
1186 return count;
1187 }
1188
1189 static ssize_t
1190 show_sf4_temp(struct device *dev, struct device_attribute *attr, char *buf)
1191 {
1192 struct w83795_data *data = w83795_update_pwm_config(dev);
1193 struct sensor_device_attribute_2 *sensor_attr =
1194 to_sensor_dev_attr_2(attr);
1195 int nr = sensor_attr->nr;
1196 int index = sensor_attr->index;
1197
1198 return sprintf(buf, "%u\n",
1199 (data->sf4_reg[index][SF4_TEMP][nr]) * 1000);
1200 }
1201
1202 static ssize_t
1203 store_sf4_temp(struct device *dev, struct device_attribute *attr,
1204 const char *buf, size_t count)
1205 {
1206 struct i2c_client *client = to_i2c_client(dev);
1207 struct w83795_data *data = i2c_get_clientdata(client);
1208 struct sensor_device_attribute_2 *sensor_attr =
1209 to_sensor_dev_attr_2(attr);
1210 int nr = sensor_attr->nr;
1211 int index = sensor_attr->index;
1212 unsigned long val;
1213
1214 if (strict_strtoul(buf, 10, &val) < 0)
1215 return -EINVAL;
1216 val /= 1000;
1217
1218 mutex_lock(&data->update_lock);
1219 w83795_write(client, W83795_REG_SF4_TEMP(index, nr), val);
1220 data->sf4_reg[index][SF4_TEMP][nr] = val;
1221 mutex_unlock(&data->update_lock);
1222
1223 return count;
1224 }
1225
1226
1227 static ssize_t
1228 show_temp(struct device *dev, struct device_attribute *attr, char *buf)
1229 {
1230 struct sensor_device_attribute_2 *sensor_attr =
1231 to_sensor_dev_attr_2(attr);
1232 int nr = sensor_attr->nr;
1233 int index = sensor_attr->index;
1234 struct w83795_data *data = w83795_update_device(dev);
1235 long temp = temp_from_reg(data->temp[index][nr]);
1236
1237 if (TEMP_READ == nr)
1238 temp += (data->temp_read_vrlsb[index] >> 6) * 250;
1239 return sprintf(buf, "%ld\n", temp);
1240 }
1241
1242 static ssize_t
1243 store_temp(struct device *dev, struct device_attribute *attr,
1244 const char *buf, size_t count)
1245 {
1246 struct sensor_device_attribute_2 *sensor_attr =
1247 to_sensor_dev_attr_2(attr);
1248 int nr = sensor_attr->nr;
1249 int index = sensor_attr->index;
1250 struct i2c_client *client = to_i2c_client(dev);
1251 struct w83795_data *data = i2c_get_clientdata(client);
1252 long tmp;
1253
1254 if (strict_strtol(buf, 10, &tmp) < 0)
1255 return -EINVAL;
1256
1257 mutex_lock(&data->update_lock);
1258 data->temp[index][nr] = temp_to_reg(tmp, -128, 127);
1259 w83795_write(client, W83795_REG_TEMP[index][nr], data->temp[index][nr]);
1260 mutex_unlock(&data->update_lock);
1261 return count;
1262 }
1263
1264
1265 static ssize_t
1266 show_dts_mode(struct device *dev, struct device_attribute *attr, char *buf)
1267 {
1268 struct w83795_data *data = dev_get_drvdata(dev);
1269 int tmp;
1270
1271 if (data->enable_dts & 2)
1272 tmp = 5;
1273 else
1274 tmp = 6;
1275
1276 return sprintf(buf, "%d\n", tmp);
1277 }
1278
1279 static ssize_t
1280 show_dts(struct device *dev, struct device_attribute *attr, char *buf)
1281 {
1282 struct sensor_device_attribute_2 *sensor_attr =
1283 to_sensor_dev_attr_2(attr);
1284 int index = sensor_attr->index;
1285 struct w83795_data *data = w83795_update_device(dev);
1286 long temp = temp_from_reg(data->dts[index]);
1287
1288 temp += (data->dts_read_vrlsb[index] >> 6) * 250;
1289 return sprintf(buf, "%ld\n", temp);
1290 }
1291
1292 static ssize_t
1293 show_dts_ext(struct device *dev, struct device_attribute *attr, char *buf)
1294 {
1295 struct sensor_device_attribute_2 *sensor_attr =
1296 to_sensor_dev_attr_2(attr);
1297 int nr = sensor_attr->nr;
1298 struct w83795_data *data = dev_get_drvdata(dev);
1299 long temp = temp_from_reg(data->dts_ext[nr]);
1300
1301 return sprintf(buf, "%ld\n", temp);
1302 }
1303
1304 static ssize_t
1305 store_dts_ext(struct device *dev, struct device_attribute *attr,
1306 const char *buf, size_t count)
1307 {
1308 struct sensor_device_attribute_2 *sensor_attr =
1309 to_sensor_dev_attr_2(attr);
1310 int nr = sensor_attr->nr;
1311 struct i2c_client *client = to_i2c_client(dev);
1312 struct w83795_data *data = i2c_get_clientdata(client);
1313 long tmp;
1314
1315 if (strict_strtol(buf, 10, &tmp) < 0)
1316 return -EINVAL;
1317
1318 mutex_lock(&data->update_lock);
1319 data->dts_ext[nr] = temp_to_reg(tmp, -128, 127);
1320 w83795_write(client, W83795_REG_DTS_EXT(nr), data->dts_ext[nr]);
1321 mutex_unlock(&data->update_lock);
1322 return count;
1323 }
1324
1325
1326 static ssize_t
1327 show_temp_mode(struct device *dev, struct device_attribute *attr, char *buf)
1328 {
1329 struct w83795_data *data = dev_get_drvdata(dev);
1330 struct sensor_device_attribute_2 *sensor_attr =
1331 to_sensor_dev_attr_2(attr);
1332 int index = sensor_attr->index;
1333 int tmp;
1334
1335 if (data->temp_mode & (1 << index))
1336 tmp = 3; /* Thermal diode */
1337 else
1338 tmp = 4; /* Thermistor */
1339
1340 return sprintf(buf, "%d\n", tmp);
1341 }
1342
1343 /* Only for temp1-4 (temp5-6 can only be thermistor) */
1344 static ssize_t
1345 store_temp_mode(struct device *dev, struct device_attribute *attr,
1346 const char *buf, size_t count)
1347 {
1348 struct i2c_client *client = to_i2c_client(dev);
1349 struct w83795_data *data = i2c_get_clientdata(client);
1350 struct sensor_device_attribute_2 *sensor_attr =
1351 to_sensor_dev_attr_2(attr);
1352 int index = sensor_attr->index;
1353 int reg_shift;
1354 unsigned long val;
1355 u8 tmp;
1356
1357 if (strict_strtoul(buf, 10, &val) < 0)
1358 return -EINVAL;
1359 if ((val != 4) && (val != 3))
1360 return -EINVAL;
1361
1362 mutex_lock(&data->update_lock);
1363 if (val == 3) {
1364 /* Thermal diode */
1365 val = 0x01;
1366 data->temp_mode |= 1 << index;
1367 } else if (val == 4) {
1368 /* Thermistor */
1369 val = 0x03;
1370 data->temp_mode &= ~(1 << index);
1371 }
1372
1373 reg_shift = 2 * index;
1374 tmp = w83795_read(client, W83795_REG_TEMP_CTRL2);
1375 tmp &= ~(0x03 << reg_shift);
1376 tmp |= val << reg_shift;
1377 w83795_write(client, W83795_REG_TEMP_CTRL2, tmp);
1378
1379 mutex_unlock(&data->update_lock);
1380 return count;
1381 }
1382
1383
1384 /* show/store VIN */
1385 static ssize_t
1386 show_in(struct device *dev, struct device_attribute *attr, char *buf)
1387 {
1388 struct sensor_device_attribute_2 *sensor_attr =
1389 to_sensor_dev_attr_2(attr);
1390 int nr = sensor_attr->nr;
1391 int index = sensor_attr->index;
1392 struct w83795_data *data = w83795_update_device(dev);
1393 u16 val = data->in[index][nr];
1394 u8 lsb_idx;
1395
1396 switch (nr) {
1397 case IN_READ:
1398 /* calculate this value again by sensors as sensors3.conf */
1399 if ((index >= 17) &&
1400 !((data->has_gain >> (index - 17)) & 1))
1401 val *= 8;
1402 break;
1403 case IN_MAX:
1404 case IN_LOW:
1405 lsb_idx = IN_LSB_SHIFT_IDX[index][IN_LSB_IDX];
1406 val <<= 2;
1407 val |= (data->in_lsb[lsb_idx][nr] >>
1408 IN_LSB_SHIFT_IDX[lsb_idx][IN_LSB_SHIFT]) & 0x03;
1409 if ((index >= 17) &&
1410 !((data->has_gain >> (index - 17)) & 1))
1411 val *= 8;
1412 break;
1413 }
1414 val = in_from_reg(index, val);
1415
1416 return sprintf(buf, "%d\n", val);
1417 }
1418
1419 static ssize_t
1420 store_in(struct device *dev, struct device_attribute *attr,
1421 const char *buf, size_t count)
1422 {
1423 struct sensor_device_attribute_2 *sensor_attr =
1424 to_sensor_dev_attr_2(attr);
1425 int nr = sensor_attr->nr;
1426 int index = sensor_attr->index;
1427 struct i2c_client *client = to_i2c_client(dev);
1428 struct w83795_data *data = i2c_get_clientdata(client);
1429 unsigned long val;
1430 u8 tmp;
1431 u8 lsb_idx;
1432
1433 if (strict_strtoul(buf, 10, &val) < 0)
1434 return -EINVAL;
1435 val = in_to_reg(index, val);
1436
1437 if ((index >= 17) &&
1438 !((data->has_gain >> (index - 17)) & 1))
1439 val /= 8;
1440 val = SENSORS_LIMIT(val, 0, 0x3FF);
1441 mutex_lock(&data->update_lock);
1442
1443 lsb_idx = IN_LSB_SHIFT_IDX[index][IN_LSB_IDX];
1444 tmp = w83795_read(client, IN_LSB_REG(lsb_idx, nr));
1445 tmp &= ~(0x03 << IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT]);
1446 tmp |= (val & 0x03) << IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT];
1447 w83795_write(client, IN_LSB_REG(lsb_idx, nr), tmp);
1448 data->in_lsb[lsb_idx][nr] = tmp;
1449
1450 tmp = (val >> 2) & 0xff;
1451 w83795_write(client, W83795_REG_IN[index][nr], tmp);
1452 data->in[index][nr] = tmp;
1453
1454 mutex_unlock(&data->update_lock);
1455 return count;
1456 }
1457
1458
1459 static ssize_t
1460 show_sf_setup(struct device *dev, struct device_attribute *attr, char *buf)
1461 {
1462 struct sensor_device_attribute_2 *sensor_attr =
1463 to_sensor_dev_attr_2(attr);
1464 int nr = sensor_attr->nr;
1465 struct w83795_data *data = w83795_update_pwm_config(dev);
1466 u16 val = data->setup_pwm[nr];
1467
1468 switch (nr) {
1469 case SETUP_PWM_UPTIME:
1470 case SETUP_PWM_DOWNTIME:
1471 val = time_from_reg(val);
1472 break;
1473 }
1474
1475 return sprintf(buf, "%d\n", val);
1476 }
1477
1478 static ssize_t
1479 store_sf_setup(struct device *dev, struct device_attribute *attr,
1480 const char *buf, size_t count)
1481 {
1482 struct sensor_device_attribute_2 *sensor_attr =
1483 to_sensor_dev_attr_2(attr);
1484 int nr = sensor_attr->nr;
1485 struct i2c_client *client = to_i2c_client(dev);
1486 struct w83795_data *data = i2c_get_clientdata(client);
1487 unsigned long val;
1488
1489 if (strict_strtoul(buf, 10, &val) < 0)
1490 return -EINVAL;
1491
1492 switch (nr) {
1493 case SETUP_PWM_DEFAULT:
1494 val = SENSORS_LIMIT(val, 0, 0xff);
1495 break;
1496 case SETUP_PWM_UPTIME:
1497 case SETUP_PWM_DOWNTIME:
1498 val = time_to_reg(val);
1499 if (val == 0)
1500 return -EINVAL;
1501 break;
1502 }
1503
1504 mutex_lock(&data->update_lock);
1505 data->setup_pwm[nr] = val;
1506 w83795_write(client, W83795_REG_SETUP_PWM(nr), val);
1507 mutex_unlock(&data->update_lock);
1508 return count;
1509 }
1510
1511
1512 #define NOT_USED -1
1513
1514 /* Don't change the attribute order, _max and _min are accessed by index
1515 * somewhere else in the code */
1516 #define SENSOR_ATTR_IN(index) { \
1517 SENSOR_ATTR_2(in##index##_input, S_IRUGO, show_in, NULL, \
1518 IN_READ, index), \
1519 SENSOR_ATTR_2(in##index##_max, S_IRUGO | S_IWUSR, show_in, \
1520 store_in, IN_MAX, index), \
1521 SENSOR_ATTR_2(in##index##_min, S_IRUGO | S_IWUSR, show_in, \
1522 store_in, IN_LOW, index), \
1523 SENSOR_ATTR_2(in##index##_alarm, S_IRUGO, show_alarm_beep, \
1524 NULL, ALARM_STATUS, index + ((index > 14) ? 1 : 0)), \
1525 SENSOR_ATTR_2(in##index##_beep, S_IWUSR | S_IRUGO, \
1526 show_alarm_beep, store_beep, BEEP_ENABLE, \
1527 index + ((index > 14) ? 1 : 0)) }
1528
1529 #define SENSOR_ATTR_FAN(index) { \
1530 SENSOR_ATTR_2(fan##index##_input, S_IRUGO, show_fan, \
1531 NULL, FAN_INPUT, index - 1), \
1532 SENSOR_ATTR_2(fan##index##_min, S_IWUSR | S_IRUGO, \
1533 show_fan, store_fan_min, FAN_MIN, index - 1), \
1534 SENSOR_ATTR_2(fan##index##_alarm, S_IRUGO, show_alarm_beep, \
1535 NULL, ALARM_STATUS, index + 31), \
1536 SENSOR_ATTR_2(fan##index##_beep, S_IWUSR | S_IRUGO, \
1537 show_alarm_beep, store_beep, BEEP_ENABLE, index + 31) }
1538
1539 #define SENSOR_ATTR_PWM(index) { \
1540 SENSOR_ATTR_2(pwm##index, S_IWUSR | S_IRUGO, show_pwm, \
1541 store_pwm, PWM_OUTPUT, index - 1), \
1542 SENSOR_ATTR_2(pwm##index##_nonstop, S_IWUSR | S_IRUGO, \
1543 show_pwm, store_pwm, PWM_NONSTOP, index - 1), \
1544 SENSOR_ATTR_2(pwm##index##_start, S_IWUSR | S_IRUGO, \
1545 show_pwm, store_pwm, PWM_START, index - 1), \
1546 SENSOR_ATTR_2(pwm##index##_stop_time, S_IWUSR | S_IRUGO, \
1547 show_pwm, store_pwm, PWM_STOP_TIME, index - 1), \
1548 SENSOR_ATTR_2(pwm##index##_freq, S_IWUSR | S_IRUGO, \
1549 show_pwm, store_pwm, PWM_FREQ, index - 1), \
1550 SENSOR_ATTR_2(pwm##index##_enable, S_IWUSR | S_IRUGO, \
1551 show_pwm_enable, store_pwm_enable, NOT_USED, index - 1), \
1552 SENSOR_ATTR_2(fan##index##_target, S_IWUSR | S_IRUGO, \
1553 show_fanin, store_fanin, FANIN_TARGET, index - 1) }
1554
1555 #define SENSOR_ATTR_DTS(index) { \
1556 SENSOR_ATTR_2(temp##index##_type, S_IRUGO , \
1557 show_dts_mode, NULL, NOT_USED, index - 7), \
1558 SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_dts, \
1559 NULL, NOT_USED, index - 7), \
1560 SENSOR_ATTR_2(temp##index##_crit, S_IRUGO | S_IWUSR, show_dts_ext, \
1561 store_dts_ext, DTS_CRIT, NOT_USED), \
1562 SENSOR_ATTR_2(temp##index##_crit_hyst, S_IRUGO | S_IWUSR, \
1563 show_dts_ext, store_dts_ext, DTS_CRIT_HYST, NOT_USED), \
1564 SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_dts_ext, \
1565 store_dts_ext, DTS_WARN, NOT_USED), \
1566 SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR, \
1567 show_dts_ext, store_dts_ext, DTS_WARN_HYST, NOT_USED), \
1568 SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO, \
1569 show_alarm_beep, NULL, ALARM_STATUS, index + 17), \
1570 SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO, \
1571 show_alarm_beep, store_beep, BEEP_ENABLE, index + 17) }
1572
1573 #define SENSOR_ATTR_TEMP(index) { \
1574 SENSOR_ATTR_2(temp##index##_type, S_IRUGO | (index < 4 ? S_IWUSR : 0), \
1575 show_temp_mode, store_temp_mode, NOT_USED, index - 1), \
1576 SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_temp, \
1577 NULL, TEMP_READ, index - 1), \
1578 SENSOR_ATTR_2(temp##index##_crit, S_IRUGO | S_IWUSR, show_temp, \
1579 store_temp, TEMP_CRIT, index - 1), \
1580 SENSOR_ATTR_2(temp##index##_crit_hyst, S_IRUGO | S_IWUSR, \
1581 show_temp, store_temp, TEMP_CRIT_HYST, index - 1), \
1582 SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_temp, \
1583 store_temp, TEMP_WARN, index - 1), \
1584 SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR, \
1585 show_temp, store_temp, TEMP_WARN_HYST, index - 1), \
1586 SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO, \
1587 show_alarm_beep, NULL, ALARM_STATUS, \
1588 index + (index > 4 ? 11 : 17)), \
1589 SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO, \
1590 show_alarm_beep, store_beep, BEEP_ENABLE, \
1591 index + (index > 4 ? 11 : 17)), \
1592 SENSOR_ATTR_2(temp##index##_source_sel, S_IWUSR | S_IRUGO, \
1593 show_temp_src, store_temp_src, NOT_USED, index - 1), \
1594 SENSOR_ATTR_2(temp##index##_pwm_enable, S_IWUSR | S_IRUGO, \
1595 show_temp_pwm_enable, store_temp_pwm_enable, \
1596 TEMP_PWM_ENABLE, index - 1), \
1597 SENSOR_ATTR_2(temp##index##_auto_channels_pwm, S_IWUSR | S_IRUGO, \
1598 show_temp_pwm_enable, store_temp_pwm_enable, \
1599 TEMP_PWM_FAN_MAP, index - 1), \
1600 SENSOR_ATTR_2(thermal_cruise##index, S_IWUSR | S_IRUGO, \
1601 show_temp_pwm, store_temp_pwm, TEMP_PWM_TTTI, index - 1), \
1602 SENSOR_ATTR_2(temp##index##_warn, S_IWUSR | S_IRUGO, \
1603 show_temp_pwm, store_temp_pwm, TEMP_PWM_CTFS, index - 1), \
1604 SENSOR_ATTR_2(temp##index##_warn_hyst, S_IWUSR | S_IRUGO, \
1605 show_temp_pwm, store_temp_pwm, TEMP_PWM_HCT, index - 1), \
1606 SENSOR_ATTR_2(temp##index##_operation_hyst, S_IWUSR | S_IRUGO, \
1607 show_temp_pwm, store_temp_pwm, TEMP_PWM_HOT, index - 1), \
1608 SENSOR_ATTR_2(temp##index##_auto_point1_pwm, S_IRUGO | S_IWUSR, \
1609 show_sf4_pwm, store_sf4_pwm, 0, index - 1), \
1610 SENSOR_ATTR_2(temp##index##_auto_point2_pwm, S_IRUGO | S_IWUSR, \
1611 show_sf4_pwm, store_sf4_pwm, 1, index - 1), \
1612 SENSOR_ATTR_2(temp##index##_auto_point3_pwm, S_IRUGO | S_IWUSR, \
1613 show_sf4_pwm, store_sf4_pwm, 2, index - 1), \
1614 SENSOR_ATTR_2(temp##index##_auto_point4_pwm, S_IRUGO | S_IWUSR, \
1615 show_sf4_pwm, store_sf4_pwm, 3, index - 1), \
1616 SENSOR_ATTR_2(temp##index##_auto_point5_pwm, S_IRUGO | S_IWUSR, \
1617 show_sf4_pwm, store_sf4_pwm, 4, index - 1), \
1618 SENSOR_ATTR_2(temp##index##_auto_point6_pwm, S_IRUGO | S_IWUSR, \
1619 show_sf4_pwm, store_sf4_pwm, 5, index - 1), \
1620 SENSOR_ATTR_2(temp##index##_auto_point7_pwm, S_IRUGO | S_IWUSR, \
1621 show_sf4_pwm, store_sf4_pwm, 6, index - 1), \
1622 SENSOR_ATTR_2(temp##index##_auto_point1_temp, S_IRUGO | S_IWUSR,\
1623 show_sf4_temp, store_sf4_temp, 0, index - 1), \
1624 SENSOR_ATTR_2(temp##index##_auto_point2_temp, S_IRUGO | S_IWUSR,\
1625 show_sf4_temp, store_sf4_temp, 1, index - 1), \
1626 SENSOR_ATTR_2(temp##index##_auto_point3_temp, S_IRUGO | S_IWUSR,\
1627 show_sf4_temp, store_sf4_temp, 2, index - 1), \
1628 SENSOR_ATTR_2(temp##index##_auto_point4_temp, S_IRUGO | S_IWUSR,\
1629 show_sf4_temp, store_sf4_temp, 3, index - 1), \
1630 SENSOR_ATTR_2(temp##index##_auto_point5_temp, S_IRUGO | S_IWUSR,\
1631 show_sf4_temp, store_sf4_temp, 4, index - 1), \
1632 SENSOR_ATTR_2(temp##index##_auto_point6_temp, S_IRUGO | S_IWUSR,\
1633 show_sf4_temp, store_sf4_temp, 5, index - 1), \
1634 SENSOR_ATTR_2(temp##index##_auto_point7_temp, S_IRUGO | S_IWUSR,\
1635 show_sf4_temp, store_sf4_temp, 6, index - 1) }
1636
1637
1638 static struct sensor_device_attribute_2 w83795_in[][5] = {
1639 SENSOR_ATTR_IN(0),
1640 SENSOR_ATTR_IN(1),
1641 SENSOR_ATTR_IN(2),
1642 SENSOR_ATTR_IN(3),
1643 SENSOR_ATTR_IN(4),
1644 SENSOR_ATTR_IN(5),
1645 SENSOR_ATTR_IN(6),
1646 SENSOR_ATTR_IN(7),
1647 SENSOR_ATTR_IN(8),
1648 SENSOR_ATTR_IN(9),
1649 SENSOR_ATTR_IN(10),
1650 SENSOR_ATTR_IN(11),
1651 SENSOR_ATTR_IN(12),
1652 SENSOR_ATTR_IN(13),
1653 SENSOR_ATTR_IN(14),
1654 SENSOR_ATTR_IN(15),
1655 SENSOR_ATTR_IN(16),
1656 SENSOR_ATTR_IN(17),
1657 SENSOR_ATTR_IN(18),
1658 SENSOR_ATTR_IN(19),
1659 SENSOR_ATTR_IN(20),
1660 };
1661
1662 static const struct sensor_device_attribute_2 w83795_fan[][4] = {
1663 SENSOR_ATTR_FAN(1),
1664 SENSOR_ATTR_FAN(2),
1665 SENSOR_ATTR_FAN(3),
1666 SENSOR_ATTR_FAN(4),
1667 SENSOR_ATTR_FAN(5),
1668 SENSOR_ATTR_FAN(6),
1669 SENSOR_ATTR_FAN(7),
1670 SENSOR_ATTR_FAN(8),
1671 SENSOR_ATTR_FAN(9),
1672 SENSOR_ATTR_FAN(10),
1673 SENSOR_ATTR_FAN(11),
1674 SENSOR_ATTR_FAN(12),
1675 SENSOR_ATTR_FAN(13),
1676 SENSOR_ATTR_FAN(14),
1677 };
1678
1679 static const struct sensor_device_attribute_2 w83795_temp[][29] = {
1680 SENSOR_ATTR_TEMP(1),
1681 SENSOR_ATTR_TEMP(2),
1682 SENSOR_ATTR_TEMP(3),
1683 SENSOR_ATTR_TEMP(4),
1684 SENSOR_ATTR_TEMP(5),
1685 SENSOR_ATTR_TEMP(6),
1686 };
1687
1688 static const struct sensor_device_attribute_2 w83795_dts[][8] = {
1689 SENSOR_ATTR_DTS(7),
1690 SENSOR_ATTR_DTS(8),
1691 SENSOR_ATTR_DTS(9),
1692 SENSOR_ATTR_DTS(10),
1693 SENSOR_ATTR_DTS(11),
1694 SENSOR_ATTR_DTS(12),
1695 SENSOR_ATTR_DTS(13),
1696 SENSOR_ATTR_DTS(14),
1697 };
1698
1699 static const struct sensor_device_attribute_2 w83795_pwm[][7] = {
1700 SENSOR_ATTR_PWM(1),
1701 SENSOR_ATTR_PWM(2),
1702 SENSOR_ATTR_PWM(3),
1703 SENSOR_ATTR_PWM(4),
1704 SENSOR_ATTR_PWM(5),
1705 SENSOR_ATTR_PWM(6),
1706 SENSOR_ATTR_PWM(7),
1707 SENSOR_ATTR_PWM(8),
1708 };
1709
1710 static const struct sensor_device_attribute_2 sda_single_files[] = {
1711 SENSOR_ATTR_2(chassis, S_IWUSR | S_IRUGO, show_alarm_beep,
1712 store_chassis_clear, ALARM_STATUS, 46),
1713 SENSOR_ATTR_2(beep_enable, S_IWUSR | S_IRUGO, show_alarm_beep,
1714 store_beep, BEEP_ENABLE, 47),
1715 SENSOR_ATTR_2(speed_cruise_tolerance, S_IWUSR | S_IRUGO, show_fanin,
1716 store_fanin, FANIN_TOL, NOT_USED),
1717 SENSOR_ATTR_2(pwm_default, S_IWUSR | S_IRUGO, show_sf_setup,
1718 store_sf_setup, SETUP_PWM_DEFAULT, NOT_USED),
1719 SENSOR_ATTR_2(pwm_uptime, S_IWUSR | S_IRUGO, show_sf_setup,
1720 store_sf_setup, SETUP_PWM_UPTIME, NOT_USED),
1721 SENSOR_ATTR_2(pwm_downtime, S_IWUSR | S_IRUGO, show_sf_setup,
1722 store_sf_setup, SETUP_PWM_DOWNTIME, NOT_USED),
1723 };
1724
1725 /*
1726 * Driver interface
1727 */
1728
1729 static void w83795_init_client(struct i2c_client *client)
1730 {
1731 struct w83795_data *data = i2c_get_clientdata(client);
1732 static const u16 clkin[4] = { /* in kHz */
1733 14318, 24000, 33333, 48000
1734 };
1735 u8 config;
1736
1737 if (reset)
1738 w83795_write(client, W83795_REG_CONFIG, 0x80);
1739
1740 /* Start monitoring if needed */
1741 config = w83795_read(client, W83795_REG_CONFIG);
1742 if (!(config & W83795_REG_CONFIG_START)) {
1743 dev_info(&client->dev, "Enabling monitoring operations\n");
1744 w83795_write(client, W83795_REG_CONFIG,
1745 config | W83795_REG_CONFIG_START);
1746 }
1747
1748 data->clkin = clkin[(config >> 3) & 0x3];
1749 dev_dbg(&client->dev, "clkin = %u kHz\n", data->clkin);
1750 }
1751
1752 static int w83795_get_device_id(struct i2c_client *client)
1753 {
1754 int device_id;
1755
1756 device_id = i2c_smbus_read_byte_data(client, W83795_REG_DEVICEID);
1757
1758 /* Special case for rev. A chips; can't be checked first because later
1759 revisions emulate this for compatibility */
1760 if (device_id < 0 || (device_id & 0xf0) != 0x50) {
1761 int alt_id;
1762
1763 alt_id = i2c_smbus_read_byte_data(client,
1764 W83795_REG_DEVICEID_A);
1765 if (alt_id == 0x50)
1766 device_id = alt_id;
1767 }
1768
1769 return device_id;
1770 }
1771
1772 /* Return 0 if detection is successful, -ENODEV otherwise */
1773 static int w83795_detect(struct i2c_client *client,
1774 struct i2c_board_info *info)
1775 {
1776 int bank, vendor_id, device_id, expected, i2c_addr, config;
1777 struct i2c_adapter *adapter = client->adapter;
1778 unsigned short address = client->addr;
1779 const char *chip_name;
1780
1781 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1782 return -ENODEV;
1783 bank = i2c_smbus_read_byte_data(client, W83795_REG_BANKSEL);
1784 if (bank < 0 || (bank & 0x7c)) {
1785 dev_dbg(&adapter->dev,
1786 "w83795: Detection failed at addr 0x%02hx, check %s\n",
1787 address, "bank");
1788 return -ENODEV;
1789 }
1790
1791 /* Check Nuvoton vendor ID */
1792 vendor_id = i2c_smbus_read_byte_data(client, W83795_REG_VENDORID);
1793 expected = bank & 0x80 ? 0x5c : 0xa3;
1794 if (vendor_id != expected) {
1795 dev_dbg(&adapter->dev,
1796 "w83795: Detection failed at addr 0x%02hx, check %s\n",
1797 address, "vendor id");
1798 return -ENODEV;
1799 }
1800
1801 /* Check device ID */
1802 device_id = w83795_get_device_id(client) |
1803 (i2c_smbus_read_byte_data(client, W83795_REG_CHIPID) << 8);
1804 if ((device_id >> 4) != 0x795) {
1805 dev_dbg(&adapter->dev,
1806 "w83795: Detection failed at addr 0x%02hx, check %s\n",
1807 address, "device id\n");
1808 return -ENODEV;
1809 }
1810
1811 /* If Nuvoton chip, address of chip and W83795_REG_I2C_ADDR
1812 should match */
1813 if ((bank & 0x07) == 0) {
1814 i2c_addr = i2c_smbus_read_byte_data(client,
1815 W83795_REG_I2C_ADDR);
1816 if ((i2c_addr & 0x7f) != address) {
1817 dev_dbg(&adapter->dev,
1818 "w83795: Detection failed at addr 0x%02hx, "
1819 "check %s\n", address, "i2c addr");
1820 return -ENODEV;
1821 }
1822 }
1823
1824 /* Check 795 chip type: 795G or 795ADG
1825 Usually we don't write to chips during detection, but here we don't
1826 quite have the choice; hopefully it's OK, we are about to return
1827 success anyway */
1828 if ((bank & 0x07) != 0)
1829 i2c_smbus_write_byte_data(client, W83795_REG_BANKSEL,
1830 bank & ~0x07);
1831 config = i2c_smbus_read_byte_data(client, W83795_REG_CONFIG);
1832 if (config & W83795_REG_CONFIG_CONFIG48)
1833 chip_name = "w83795adg";
1834 else
1835 chip_name = "w83795g";
1836
1837 strlcpy(info->type, chip_name, I2C_NAME_SIZE);
1838 dev_info(&adapter->dev, "Found %s rev. %c at 0x%02hx\n", chip_name,
1839 'A' + (device_id & 0xf), address);
1840
1841 return 0;
1842 }
1843
1844 static int w83795_handle_files(struct device *dev, int (*fn)(struct device *,
1845 const struct device_attribute *))
1846 {
1847 struct w83795_data *data = dev_get_drvdata(dev);
1848 int err, i, j;
1849
1850 for (i = 0; i < ARRAY_SIZE(w83795_in); i++) {
1851 if (!(data->has_in & (1 << i)))
1852 continue;
1853 for (j = 0; j < ARRAY_SIZE(w83795_in[0]); j++) {
1854 err = fn(dev, &w83795_in[i][j].dev_attr);
1855 if (err)
1856 return err;
1857 }
1858 }
1859
1860 for (i = 0; i < ARRAY_SIZE(w83795_fan); i++) {
1861 if (!(data->has_fan & (1 << i)))
1862 continue;
1863 for (j = 0; j < ARRAY_SIZE(w83795_fan[0]); j++) {
1864 err = fn(dev, &w83795_fan[i][j].dev_attr);
1865 if (err)
1866 return err;
1867 }
1868 }
1869
1870 for (i = 0; i < ARRAY_SIZE(sda_single_files); i++) {
1871 err = fn(dev, &sda_single_files[i].dev_attr);
1872 if (err)
1873 return err;
1874 }
1875
1876 for (i = 0; i < data->has_pwm; i++) {
1877 for (j = 0; j < ARRAY_SIZE(w83795_pwm[0]); j++) {
1878 err = fn(dev, &w83795_pwm[i][j].dev_attr);
1879 if (err)
1880 return err;
1881 }
1882 }
1883
1884 for (i = 0; i < ARRAY_SIZE(w83795_temp); i++) {
1885 if (!(data->has_temp & (1 << i)))
1886 continue;
1887 for (j = 0; j < ARRAY_SIZE(w83795_temp[0]); j++) {
1888 err = fn(dev, &w83795_temp[i][j].dev_attr);
1889 if (err)
1890 return err;
1891 }
1892 }
1893
1894 if (data->enable_dts != 0) {
1895 for (i = 0; i < ARRAY_SIZE(w83795_dts); i++) {
1896 if (!(data->has_dts & (1 << i)))
1897 continue;
1898 for (j = 0; j < ARRAY_SIZE(w83795_dts[0]); j++) {
1899 err = fn(dev, &w83795_dts[i][j].dev_attr);
1900 if (err)
1901 return err;
1902 }
1903 }
1904 }
1905
1906 return 0;
1907 }
1908
1909 /* We need a wrapper that fits in w83795_handle_files */
1910 static int device_remove_file_wrapper(struct device *dev,
1911 const struct device_attribute *attr)
1912 {
1913 device_remove_file(dev, attr);
1914 return 0;
1915 }
1916
1917 static void w83795_check_dynamic_in_limits(struct i2c_client *client)
1918 {
1919 struct w83795_data *data = i2c_get_clientdata(client);
1920 u8 vid_ctl;
1921 int i, err_max, err_min;
1922
1923 vid_ctl = w83795_read(client, W83795_REG_VID_CTRL);
1924
1925 /* Return immediately if VRM isn't configured */
1926 if ((vid_ctl & 0x07) == 0x00 || (vid_ctl & 0x07) == 0x07)
1927 return;
1928
1929 data->has_dyn_in = (vid_ctl >> 3) & 0x07;
1930 for (i = 0; i < 2; i++) {
1931 if (!(data->has_dyn_in & (1 << i)))
1932 continue;
1933
1934 /* Voltage limits in dynamic mode, switch to read-only */
1935 err_max = sysfs_chmod_file(&client->dev.kobj,
1936 &w83795_in[i][2].dev_attr.attr,
1937 S_IRUGO);
1938 err_min = sysfs_chmod_file(&client->dev.kobj,
1939 &w83795_in[i][3].dev_attr.attr,
1940 S_IRUGO);
1941 if (err_max || err_min)
1942 dev_warn(&client->dev, "Failed to set in%d limits "
1943 "read-only (%d, %d)\n", i, err_max, err_min);
1944 else
1945 dev_info(&client->dev, "in%d limits set dynamically "
1946 "from VID\n", i);
1947 }
1948 }
1949
1950 /* Check pins that can be used for either temperature or voltage monitoring */
1951 static void w83795_apply_temp_config(struct w83795_data *data, u8 config,
1952 int temp_chan, int in_chan)
1953 {
1954 /* config is a 2-bit value */
1955 switch (config) {
1956 case 0x2: /* Voltage monitoring */
1957 data->has_in |= 1 << in_chan;
1958 break;
1959 case 0x1: /* Thermal diode */
1960 if (temp_chan >= 4)
1961 break;
1962 data->temp_mode |= 1 << temp_chan;
1963 /* fall through */
1964 case 0x3: /* Thermistor */
1965 data->has_temp |= 1 << temp_chan;
1966 break;
1967 }
1968 }
1969
1970 static int w83795_probe(struct i2c_client *client,
1971 const struct i2c_device_id *id)
1972 {
1973 int i;
1974 u8 tmp;
1975 struct device *dev = &client->dev;
1976 struct w83795_data *data;
1977 int err;
1978
1979 data = kzalloc(sizeof(struct w83795_data), GFP_KERNEL);
1980 if (!data) {
1981 err = -ENOMEM;
1982 goto exit;
1983 }
1984
1985 i2c_set_clientdata(client, data);
1986 data->chip_type = id->driver_data;
1987 data->bank = i2c_smbus_read_byte_data(client, W83795_REG_BANKSEL);
1988 mutex_init(&data->update_lock);
1989
1990 /* Initialize the chip */
1991 w83795_init_client(client);
1992
1993 /* Check which voltages and fans are present */
1994 data->has_in = w83795_read(client, W83795_REG_VOLT_CTRL1)
1995 | (w83795_read(client, W83795_REG_VOLT_CTRL2) << 8);
1996 data->has_fan = w83795_read(client, W83795_REG_FANIN_CTRL1)
1997 | (w83795_read(client, W83795_REG_FANIN_CTRL2) << 8);
1998
1999 /* Check which analog temperatures and extra voltages are present */
2000 tmp = w83795_read(client, W83795_REG_TEMP_CTRL1);
2001 if (tmp & 0x20)
2002 data->enable_dts = 1;
2003 w83795_apply_temp_config(data, (tmp >> 2) & 0x3, 5, 16);
2004 w83795_apply_temp_config(data, tmp & 0x3, 4, 15);
2005 tmp = w83795_read(client, W83795_REG_TEMP_CTRL2);
2006 w83795_apply_temp_config(data, tmp >> 6, 3, 20);
2007 w83795_apply_temp_config(data, (tmp >> 4) & 0x3, 2, 19);
2008 w83795_apply_temp_config(data, (tmp >> 2) & 0x3, 1, 18);
2009 w83795_apply_temp_config(data, tmp & 0x3, 0, 17);
2010
2011 /* Check DTS enable status */
2012 if (data->enable_dts) {
2013 if (1 & w83795_read(client, W83795_REG_DTSC))
2014 data->enable_dts |= 2;
2015 data->has_dts = w83795_read(client, W83795_REG_DTSE);
2016 }
2017
2018 /* Report PECI Tbase values */
2019 if (data->enable_dts == 1) {
2020 for (i = 0; i < 8; i++) {
2021 if (!(data->has_dts & (1 << i)))
2022 continue;
2023 tmp = w83795_read(client, W83795_REG_PECI_TBASE(i));
2024 dev_info(&client->dev,
2025 "PECI agent %d Tbase temperature: %u\n",
2026 i + 1, (unsigned int)tmp & 0x7f);
2027 }
2028 }
2029
2030 data->has_gain = w83795_read(client, W83795_REG_VMIGB_CTRL) & 0x0f;
2031
2032 /* pwm and smart fan */
2033 if (data->chip_type == w83795g)
2034 data->has_pwm = 8;
2035 else
2036 data->has_pwm = 2;
2037
2038 err = w83795_handle_files(dev, device_create_file);
2039 if (err)
2040 goto exit_remove;
2041
2042 if (data->chip_type == w83795g)
2043 w83795_check_dynamic_in_limits(client);
2044
2045 data->hwmon_dev = hwmon_device_register(dev);
2046 if (IS_ERR(data->hwmon_dev)) {
2047 err = PTR_ERR(data->hwmon_dev);
2048 goto exit_remove;
2049 }
2050
2051 return 0;
2052
2053 exit_remove:
2054 w83795_handle_files(dev, device_remove_file_wrapper);
2055 kfree(data);
2056 exit:
2057 return err;
2058 }
2059
2060 static int w83795_remove(struct i2c_client *client)
2061 {
2062 struct w83795_data *data = i2c_get_clientdata(client);
2063
2064 hwmon_device_unregister(data->hwmon_dev);
2065 w83795_handle_files(&client->dev, device_remove_file_wrapper);
2066 kfree(data);
2067
2068 return 0;
2069 }
2070
2071
2072 static const struct i2c_device_id w83795_id[] = {
2073 { "w83795g", w83795g },
2074 { "w83795adg", w83795adg },
2075 { }
2076 };
2077 MODULE_DEVICE_TABLE(i2c, w83795_id);
2078
2079 static struct i2c_driver w83795_driver = {
2080 .driver = {
2081 .name = "w83795",
2082 },
2083 .probe = w83795_probe,
2084 .remove = w83795_remove,
2085 .id_table = w83795_id,
2086
2087 .class = I2C_CLASS_HWMON,
2088 .detect = w83795_detect,
2089 .address_list = normal_i2c,
2090 };
2091
2092 static int __init sensors_w83795_init(void)
2093 {
2094 return i2c_add_driver(&w83795_driver);
2095 }
2096
2097 static void __exit sensors_w83795_exit(void)
2098 {
2099 i2c_del_driver(&w83795_driver);
2100 }
2101
2102 MODULE_AUTHOR("Wei Song");
2103 MODULE_DESCRIPTION("W83795G/ADG hardware monitoring driver");
2104 MODULE_LICENSE("GPL");
2105
2106 module_init(sensors_w83795_init);
2107 module_exit(sensors_w83795_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree