1/*
2 * w83791d.c - Part of lm_sensors, Linux kernel modules for hardware
3 * monitoring
4 *
5 * Copyright (C) 2006-2007 Charles Spirakis <bezaur@gmail.com>
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; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 */
21
22/*
23 * Supports following chips:
24 *
25 * Chip #vin #fanin #pwm #temp wchipid vendid i2c ISA
26 * w83791d 10 5 5 3 0x71 0x5ca3 yes no
27 *
28 * The w83791d chip appears to be part way between the 83781d and the
29 * 83792d. Thus, this file is derived from both the w83792d.c and
30 * w83781d.c files.
31 *
32 * The w83791g chip is the same as the w83791d but lead-free.
33 */
34
35#include <linux/module.h>
36#include <linux/init.h>
37#include <linux/slab.h>
38#include <linux/i2c.h>
39#include <linux/hwmon.h>
40#include <linux/hwmon-vid.h>
41#include <linux/hwmon-sysfs.h>
42#include <linux/err.h>
43#include <linux/mutex.h>
44#include <linux/jiffies.h>
45
46#define NUMBER_OF_VIN 10
47#define NUMBER_OF_FANIN 5
48#define NUMBER_OF_TEMPIN 3
49#define NUMBER_OF_PWM 5
50
51/* Addresses to scan */
52static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f,
53 I2C_CLIENT_END };
54
55/* Insmod parameters */
56
57static unsigned short force_subclients[4];
58module_param_array(force_subclients, short, NULL, 0);
59MODULE_PARM_DESC(force_subclients,
60 "List of subclient addresses: {bus, clientaddr, subclientaddr1, subclientaddr2}");
61
62static bool reset;
63module_param(reset, bool, 0);
64MODULE_PARM_DESC(reset, "Set to one to force a hardware chip reset");
65
66static bool init;
67module_param(init, bool, 0);
68MODULE_PARM_DESC(init, "Set to one to force extra software initialization");
69
70/* The W83791D registers */
71static const u8 W83791D_REG_IN[NUMBER_OF_VIN] = {
72 0x20, /* VCOREA in DataSheet */
73 0x21, /* VINR0 in DataSheet */
74 0x22, /* +3.3VIN in DataSheet */
75 0x23, /* VDD5V in DataSheet */
76 0x24, /* +12VIN in DataSheet */
77 0x25, /* -12VIN in DataSheet */
78 0x26, /* -5VIN in DataSheet */
79 0xB0, /* 5VSB in DataSheet */
80 0xB1, /* VBAT in DataSheet */
81 0xB2 /* VINR1 in DataSheet */
82};
83
84static const u8 W83791D_REG_IN_MAX[NUMBER_OF_VIN] = {
85 0x2B, /* VCOREA High Limit in DataSheet */
86 0x2D, /* VINR0 High Limit in DataSheet */
87 0x2F, /* +3.3VIN High Limit in DataSheet */
88 0x31, /* VDD5V High Limit in DataSheet */
89 0x33, /* +12VIN High Limit in DataSheet */
90 0x35, /* -12VIN High Limit in DataSheet */
91 0x37, /* -5VIN High Limit in DataSheet */
92 0xB4, /* 5VSB High Limit in DataSheet */
93 0xB6, /* VBAT High Limit in DataSheet */
94 0xB8 /* VINR1 High Limit in DataSheet */
95};
96static const u8 W83791D_REG_IN_MIN[NUMBER_OF_VIN] = {
97 0x2C, /* VCOREA Low Limit in DataSheet */
98 0x2E, /* VINR0 Low Limit in DataSheet */
99 0x30, /* +3.3VIN Low Limit in DataSheet */
100 0x32, /* VDD5V Low Limit in DataSheet */
101 0x34, /* +12VIN Low Limit in DataSheet */
102 0x36, /* -12VIN Low Limit in DataSheet */
103 0x38, /* -5VIN Low Limit in DataSheet */
104 0xB5, /* 5VSB Low Limit in DataSheet */
105 0xB7, /* VBAT Low Limit in DataSheet */
106 0xB9 /* VINR1 Low Limit in DataSheet */
107};
108static const u8 W83791D_REG_FAN[NUMBER_OF_FANIN] = {
109 0x28, /* FAN 1 Count in DataSheet */
110 0x29, /* FAN 2 Count in DataSheet */
111 0x2A, /* FAN 3 Count in DataSheet */
112 0xBA, /* FAN 4 Count in DataSheet */
113 0xBB, /* FAN 5 Count in DataSheet */
114};
115static const u8 W83791D_REG_FAN_MIN[NUMBER_OF_FANIN] = {
116 0x3B, /* FAN 1 Count Low Limit in DataSheet */
117 0x3C, /* FAN 2 Count Low Limit in DataSheet */
118 0x3D, /* FAN 3 Count Low Limit in DataSheet */
119 0xBC, /* FAN 4 Count Low Limit in DataSheet */
120 0xBD, /* FAN 5 Count Low Limit in DataSheet */
121};
122
123static const u8 W83791D_REG_PWM[NUMBER_OF_PWM] = {
124 0x81, /* PWM 1 duty cycle register in DataSheet */
125 0x83, /* PWM 2 duty cycle register in DataSheet */
126 0x94, /* PWM 3 duty cycle register in DataSheet */
127 0xA0, /* PWM 4 duty cycle register in DataSheet */
128 0xA1, /* PWM 5 duty cycle register in DataSheet */
129};
130
131static const u8 W83791D_REG_TEMP_TARGET[3] = {
132 0x85, /* PWM 1 target temperature for temp 1 */
133 0x86, /* PWM 2 target temperature for temp 2 */
134 0x96, /* PWM 3 target temperature for temp 3 */
135};
136
137static const u8 W83791D_REG_TEMP_TOL[2] = {
138 0x87, /* PWM 1/2 temperature tolerance */
139 0x97, /* PWM 3 temperature tolerance */
140};
141
142static const u8 W83791D_REG_FAN_CFG[2] = {
143 0x84, /* FAN 1/2 configuration */
144 0x95, /* FAN 3 configuration */
145};
146
147static const u8 W83791D_REG_FAN_DIV[3] = {
148 0x47, /* contains FAN1 and FAN2 Divisor */
149 0x4b, /* contains FAN3 Divisor */
150 0x5C, /* contains FAN4 and FAN5 Divisor */
151};
152
153#define W83791D_REG_BANK 0x4E
154#define W83791D_REG_TEMP2_CONFIG 0xC2
155#define W83791D_REG_TEMP3_CONFIG 0xCA
156
157static const u8 W83791D_REG_TEMP1[3] = {
158 0x27, /* TEMP 1 in DataSheet */
159 0x39, /* TEMP 1 Over in DataSheet */
160 0x3A, /* TEMP 1 Hyst in DataSheet */
161};
162
163static const u8 W83791D_REG_TEMP_ADD[2][6] = {
164 {0xC0, /* TEMP 2 in DataSheet */
165 0xC1, /* TEMP 2(0.5 deg) in DataSheet */
166 0xC5, /* TEMP 2 Over High part in DataSheet */
167 0xC6, /* TEMP 2 Over Low part in DataSheet */
168 0xC3, /* TEMP 2 Thyst High part in DataSheet */
169 0xC4}, /* TEMP 2 Thyst Low part in DataSheet */
170 {0xC8, /* TEMP 3 in DataSheet */
171 0xC9, /* TEMP 3(0.5 deg) in DataSheet */
172 0xCD, /* TEMP 3 Over High part in DataSheet */
173 0xCE, /* TEMP 3 Over Low part in DataSheet */
174 0xCB, /* TEMP 3 Thyst High part in DataSheet */
175 0xCC} /* TEMP 3 Thyst Low part in DataSheet */
176};
177
178#define W83791D_REG_BEEP_CONFIG 0x4D
179
180static const u8 W83791D_REG_BEEP_CTRL[3] = {
181 0x56, /* BEEP Control Register 1 */
182 0x57, /* BEEP Control Register 2 */
183 0xA3, /* BEEP Control Register 3 */
184};
185
186#define W83791D_REG_GPIO 0x15
187#define W83791D_REG_CONFIG 0x40
188#define W83791D_REG_VID_FANDIV 0x47
189#define W83791D_REG_DID_VID4 0x49
190#define W83791D_REG_WCHIPID 0x58
191#define W83791D_REG_CHIPMAN 0x4F
192#define W83791D_REG_PIN 0x4B
193#define W83791D_REG_I2C_SUBADDR 0x4A
194
195#define W83791D_REG_ALARM1 0xA9 /* realtime status register1 */
196#define W83791D_REG_ALARM2 0xAA /* realtime status register2 */
197#define W83791D_REG_ALARM3 0xAB /* realtime status register3 */
198
199#define W83791D_REG_VBAT 0x5D
200#define W83791D_REG_I2C_ADDR 0x48
201
202/*
203 * The SMBus locks itself. The Winbond W83791D has a bank select register
204 * (index 0x4e), but the driver only accesses registers in bank 0. Since
205 * we don't switch banks, we don't need any special code to handle
206 * locking access between bank switches
207 */
208static inline int w83791d_read(struct i2c_client *client, u8 reg)
209{
210 return i2c_smbus_read_byte_data(client, reg);
211}
212
213static inline int w83791d_write(struct i2c_client *client, u8 reg, u8 value)
214{
215 return i2c_smbus_write_byte_data(client, reg, value);
216}
217
218/*
219 * The analog voltage inputs have 16mV LSB. Since the sysfs output is
220 * in mV as would be measured on the chip input pin, need to just
221 * multiply/divide by 16 to translate from/to register values.
222 */
223#define IN_TO_REG(val) (clamp_val((((val) + 8) / 16), 0, 255))
224#define IN_FROM_REG(val) ((val) * 16)
225
226static u8 fan_to_reg(long rpm, int div)
227{
228 if (rpm == 0)
229 return 255;
230 rpm = clamp_val(rpm, 1, 1000000);
231 return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
232}
233
234#define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : \
235 ((val) == 255 ? 0 : \
236 1350000 / ((val) * (div))))
237
238/* for temp1 which is 8-bit resolution, LSB = 1 degree Celsius */
239#define TEMP1_FROM_REG(val) ((val) * 1000)
240#define TEMP1_TO_REG(val) ((val) <= -128000 ? -128 : \
241 (val) >= 127000 ? 127 : \
242 (val) < 0 ? ((val) - 500) / 1000 : \
243 ((val) + 500) / 1000)
244
245/*
246 * for temp2 and temp3 which are 9-bit resolution, LSB = 0.5 degree Celsius
247 * Assumes the top 8 bits are the integral amount and the bottom 8 bits
248 * are the fractional amount. Since we only have 0.5 degree resolution,
249 * the bottom 7 bits will always be zero
250 */
251#define TEMP23_FROM_REG(val) ((val) / 128 * 500)
252#define TEMP23_TO_REG(val) (DIV_ROUND_CLOSEST(clamp_val((val), -128000, \
253 127500), 500) * 128)
254
255/* for thermal cruise target temp, 7-bits, LSB = 1 degree Celsius */
256#define TARGET_TEMP_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val((val), 0, 127000), \
257 1000)
258
259/* for thermal cruise temp tolerance, 4-bits, LSB = 1 degree Celsius */
260#define TOL_TEMP_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val((val), 0, 15000), \
261 1000)
262
263#define BEEP_MASK_TO_REG(val) ((val) & 0xffffff)
264#define BEEP_MASK_FROM_REG(val) ((val) & 0xffffff)
265
266#define DIV_FROM_REG(val) (1 << (val))
267
268static u8 div_to_reg(int nr, long val)
269{
270 int i;
271
272 /* fan divisors max out at 128 */
273 val = clamp_val(val, 1, 128) >> 1;
274 for (i = 0; i < 7; i++) {
275 if (val == 0)
276 break;
277 val >>= 1;
278 }
279 return (u8) i;
280}
281
282struct w83791d_data {
283 struct device *hwmon_dev;
284 struct mutex update_lock;
285
286 char valid; /* !=0 if following fields are valid */
287 unsigned long last_updated; /* In jiffies */
288
289 /* array of 2 pointers to subclients */
290 struct i2c_client *lm75[2];
291
292 /* volts */
293 u8 in[NUMBER_OF_VIN]; /* Register value */
294 u8 in_max[NUMBER_OF_VIN]; /* Register value */
295 u8 in_min[NUMBER_OF_VIN]; /* Register value */
296
297 /* fans */
298 u8 fan[NUMBER_OF_FANIN]; /* Register value */
299 u8 fan_min[NUMBER_OF_FANIN]; /* Register value */
300 u8 fan_div[NUMBER_OF_FANIN]; /* Register encoding, shifted right */
301
302 /* Temperature sensors */
303
304 s8 temp1[3]; /* current, over, thyst */
305 s16 temp_add[2][3]; /* fixed point value. Top 8 bits are the
306 * integral part, bottom 8 bits are the
307 * fractional part. We only use the top
308 * 9 bits as the resolution is only
309 * to the 0.5 degree C...
310 * two sensors with three values
311 * (cur, over, hyst)
312 */
313
314 /* PWMs */
315 u8 pwm[5]; /* pwm duty cycle */
316 u8 pwm_enable[3]; /* pwm enable status for fan 1-3
317 * (fan 4-5 only support manual mode)
318 */
319
320 u8 temp_target[3]; /* pwm 1-3 target temperature */
321 u8 temp_tolerance[3]; /* pwm 1-3 temperature tolerance */
322
323 /* Misc */
324 u32 alarms; /* realtime status register encoding,combined */
325 u8 beep_enable; /* Global beep enable */
326 u32 beep_mask; /* Mask off specific beeps */
327 u8 vid; /* Register encoding, combined */
328 u8 vrm; /* hwmon-vid */
329};
330
331static int w83791d_probe(struct i2c_client *client,
332 const struct i2c_device_id *id);
333static int w83791d_detect(struct i2c_client *client,
334 struct i2c_board_info *info);
335static int w83791d_remove(struct i2c_client *client);
336
337static int w83791d_read(struct i2c_client *client, u8 reg);
338static int w83791d_write(struct i2c_client *client, u8 reg, u8 value);
339static struct w83791d_data *w83791d_update_device(struct device *dev);
340
341#ifdef DEBUG
342static void w83791d_print_debug(struct w83791d_data *data, struct device *dev);
343#endif
344
345static void w83791d_init_client(struct i2c_client *client);
346
347static const struct i2c_device_id w83791d_id[] = {
348 { "w83791d", 0 },
349 { }
350};
351MODULE_DEVICE_TABLE(i2c, w83791d_id);
352
353static struct i2c_driver w83791d_driver = {
354 .class = I2C_CLASS_HWMON,
355 .driver = {
356 .name = "w83791d",
357 },
358 .probe = w83791d_probe,
359 .remove = w83791d_remove,
360 .id_table = w83791d_id,
361 .detect = w83791d_detect,
362 .address_list = normal_i2c,
363};
364
365/* following are the sysfs callback functions */
366#define show_in_reg(reg) \
367static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
368 char *buf) \
369{ \
370 struct sensor_device_attribute *sensor_attr = \
371 to_sensor_dev_attr(attr); \
372 struct w83791d_data *data = w83791d_update_device(dev); \
373 int nr = sensor_attr->index; \
374 return sprintf(buf, "%d\n", IN_FROM_REG(data->reg[nr])); \
375}
376
377show_in_reg(in);
378show_in_reg(in_min);
379show_in_reg(in_max);
380
381#define store_in_reg(REG, reg) \
382static ssize_t store_in_##reg(struct device *dev, \
383 struct device_attribute *attr, \
384 const char *buf, size_t count) \
385{ \
386 struct sensor_device_attribute *sensor_attr = \
387 to_sensor_dev_attr(attr); \
388 struct i2c_client *client = to_i2c_client(dev); \
389 struct w83791d_data *data = i2c_get_clientdata(client); \
390 int nr = sensor_attr->index; \
391 unsigned long val; \
392 int err = kstrtoul(buf, 10, &val); \
393 if (err) \
394 return err; \
395 mutex_lock(&data->update_lock); \
396 data->in_##reg[nr] = IN_TO_REG(val); \
397 w83791d_write(client, W83791D_REG_IN_##REG[nr], data->in_##reg[nr]); \
398 mutex_unlock(&data->update_lock); \
399 \
400 return count; \
401}
402store_in_reg(MIN, min);
403store_in_reg(MAX, max);
404
405static struct sensor_device_attribute sda_in_input[] = {
406 SENSOR_ATTR(in0_input, S_IRUGO, show_in, NULL, 0),
407 SENSOR_ATTR(in1_input, S_IRUGO, show_in, NULL, 1),
408 SENSOR_ATTR(in2_input, S_IRUGO, show_in, NULL, 2),
409 SENSOR_ATTR(in3_input, S_IRUGO, show_in, NULL, 3),
410 SENSOR_ATTR(in4_input, S_IRUGO, show_in, NULL, 4),
411 SENSOR_ATTR(in5_input, S_IRUGO, show_in, NULL, 5),
412 SENSOR_ATTR(in6_input, S_IRUGO, show_in, NULL, 6),
413 SENSOR_ATTR(in7_input, S_IRUGO, show_in, NULL, 7),
414 SENSOR_ATTR(in8_input, S_IRUGO, show_in, NULL, 8),
415 SENSOR_ATTR(in9_input, S_IRUGO, show_in, NULL, 9),
416};
417
418static struct sensor_device_attribute sda_in_min[] = {
419 SENSOR_ATTR(in0_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 0),
420 SENSOR_ATTR(in1_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 1),
421 SENSOR_ATTR(in2_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 2),
422 SENSOR_ATTR(in3_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 3),
423 SENSOR_ATTR(in4_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 4),
424 SENSOR_ATTR(in5_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 5),
425 SENSOR_ATTR(in6_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 6),
426 SENSOR_ATTR(in7_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 7),
427 SENSOR_ATTR(in8_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 8),
428 SENSOR_ATTR(in9_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 9),
429};
430
431static struct sensor_device_attribute sda_in_max[] = {
432 SENSOR_ATTR(in0_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 0),
433 SENSOR_ATTR(in1_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 1),
434 SENSOR_ATTR(in2_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 2),
435 SENSOR_ATTR(in3_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 3),
436 SENSOR_ATTR(in4_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 4),
437 SENSOR_ATTR(in5_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 5),
438 SENSOR_ATTR(in6_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 6),
439 SENSOR_ATTR(in7_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 7),
440 SENSOR_ATTR(in8_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 8),
441 SENSOR_ATTR(in9_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 9),
442};
443
444
445static ssize_t show_beep(struct device *dev, struct device_attribute *attr,
446 char *buf)
447{
448 struct sensor_device_attribute *sensor_attr =
449 to_sensor_dev_attr(attr);
450 struct w83791d_data *data = w83791d_update_device(dev);
451 int bitnr = sensor_attr->index;
452
453 return sprintf(buf, "%d\n", (data->beep_mask >> bitnr) & 1);
454}
455
456static ssize_t store_beep(struct device *dev, struct device_attribute *attr,
457 const char *buf, size_t count)
458{
459 struct sensor_device_attribute *sensor_attr =
460 to_sensor_dev_attr(attr);
461 struct i2c_client *client = to_i2c_client(dev);
462 struct w83791d_data *data = i2c_get_clientdata(client);
463 int bitnr = sensor_attr->index;
464 int bytenr = bitnr / 8;
465 unsigned long val;
466 int err;
467
468 err = kstrtoul(buf, 10, &val);
469 if (err)
470 return err;
471
472 val = val ? 1 : 0;
473
474 mutex_lock(&data->update_lock);
475
476 data->beep_mask &= ~(0xff << (bytenr * 8));
477 data->beep_mask |= w83791d_read(client, W83791D_REG_BEEP_CTRL[bytenr])
478 << (bytenr * 8);
479
480 data->beep_mask &= ~(1 << bitnr);
481 data->beep_mask |= val << bitnr;
482
483 w83791d_write(client, W83791D_REG_BEEP_CTRL[bytenr],
484 (data->beep_mask >> (bytenr * 8)) & 0xff);
485
486 mutex_unlock(&data->update_lock);
487
488 return count;
489}
490
491static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
492 char *buf)
493{
494 struct sensor_device_attribute *sensor_attr =
495 to_sensor_dev_attr(attr);
496 struct w83791d_data *data = w83791d_update_device(dev);
497 int bitnr = sensor_attr->index;
498
499 return sprintf(buf, "%d\n", (data->alarms >> bitnr) & 1);
500}
501
502/*
503 * Note: The bitmask for the beep enable/disable is different than
504 * the bitmask for the alarm.
505 */
506static struct sensor_device_attribute sda_in_beep[] = {
507 SENSOR_ATTR(in0_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 0),
508 SENSOR_ATTR(in1_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 13),
509 SENSOR_ATTR(in2_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 2),
510 SENSOR_ATTR(in3_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 3),
511 SENSOR_ATTR(in4_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 8),
512 SENSOR_ATTR(in5_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 9),
513 SENSOR_ATTR(in6_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 10),
514 SENSOR_ATTR(in7_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 16),
515 SENSOR_ATTR(in8_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 17),
516 SENSOR_ATTR(in9_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 14),
517};
518
519static struct sensor_device_attribute sda_in_alarm[] = {
520 SENSOR_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0),
521 SENSOR_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1),
522 SENSOR_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2),
523 SENSOR_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3),
524 SENSOR_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8),
525 SENSOR_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 9),
526 SENSOR_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 10),
527 SENSOR_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 19),
528 SENSOR_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 20),
529 SENSOR_ATTR(in9_alarm, S_IRUGO, show_alarm, NULL, 14),
530};
531
532#define show_fan_reg(reg) \
533static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
534 char *buf) \
535{ \
536 struct sensor_device_attribute *sensor_attr = \
537 to_sensor_dev_attr(attr); \
538 struct w83791d_data *data = w83791d_update_device(dev); \
539 int nr = sensor_attr->index; \
540 return sprintf(buf, "%d\n", \
541 FAN_FROM_REG(data->reg[nr], DIV_FROM_REG(data->fan_div[nr]))); \
542}
543
544show_fan_reg(fan);
545show_fan_reg(fan_min);
546
547static ssize_t store_fan_min(struct device *dev, struct device_attribute *attr,
548 const char *buf, size_t count)
549{
550 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
551 struct i2c_client *client = to_i2c_client(dev);
552 struct w83791d_data *data = i2c_get_clientdata(client);
553 int nr = sensor_attr->index;
554 unsigned long val;
555 int err;
556
557 err = kstrtoul(buf, 10, &val);
558 if (err)
559 return err;
560
561 mutex_lock(&data->update_lock);
562 data->fan_min[nr] = fan_to_reg(val, DIV_FROM_REG(data->fan_div[nr]));
563 w83791d_write(client, W83791D_REG_FAN_MIN[nr], data->fan_min[nr]);
564 mutex_unlock(&data->update_lock);
565
566 return count;
567}
568
569static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
570 char *buf)
571{
572 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
573 int nr = sensor_attr->index;
574 struct w83791d_data *data = w83791d_update_device(dev);
575 return sprintf(buf, "%u\n", DIV_FROM_REG(data->fan_div[nr]));
576}
577
578/*
579 * Note: we save and restore the fan minimum here, because its value is
580 * determined in part by the fan divisor. This follows the principle of
581 * least surprise; the user doesn't expect the fan minimum to change just
582 * because the divisor changed.
583 */
584static ssize_t store_fan_div(struct device *dev, struct device_attribute *attr,
585 const char *buf, size_t count)
586{
587 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
588 struct i2c_client *client = to_i2c_client(dev);
589 struct w83791d_data *data = i2c_get_clientdata(client);
590 int nr = sensor_attr->index;
591 unsigned long min;
592 u8 tmp_fan_div;
593 u8 fan_div_reg;
594 u8 vbat_reg;
595 int indx = 0;
596 u8 keep_mask = 0;
597 u8 new_shift = 0;
598 unsigned long val;
599 int err;
600
601 err = kstrtoul(buf, 10, &val);
602 if (err)
603 return err;
604
605 /* Save fan_min */
606 min = FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr]));
607
608 mutex_lock(&data->update_lock);
609 data->fan_div[nr] = div_to_reg(nr, val);
610
611 switch (nr) {
612 case 0:
613 indx = 0;
614 keep_mask = 0xcf;
615 new_shift = 4;
616 break;
617 case 1:
618 indx = 0;
619 keep_mask = 0x3f;
620 new_shift = 6;
621 break;
622 case 2:
623 indx = 1;
624 keep_mask = 0x3f;
625 new_shift = 6;
626 break;
627 case 3:
628 indx = 2;
629 keep_mask = 0xf8;
630 new_shift = 0;
631 break;
632 case 4:
633 indx = 2;
634 keep_mask = 0x8f;
635 new_shift = 4;
636 break;
637#ifdef DEBUG
638 default:
639 dev_warn(dev, "store_fan_div: Unexpected nr seen: %d\n", nr);
640 count = -EINVAL;
641 goto err_exit;
642#endif
643 }
644
645 fan_div_reg = w83791d_read(client, W83791D_REG_FAN_DIV[indx])
646 & keep_mask;
647 tmp_fan_div = (data->fan_div[nr] << new_shift) & ~keep_mask;
648
649 w83791d_write(client, W83791D_REG_FAN_DIV[indx],
650 fan_div_reg | tmp_fan_div);
651
652 /* Bit 2 of fans 0-2 is stored in the vbat register (bits 5-7) */
653 if (nr < 3) {
654 keep_mask = ~(1 << (nr + 5));
655 vbat_reg = w83791d_read(client, W83791D_REG_VBAT)
656 & keep_mask;
657 tmp_fan_div = (data->fan_div[nr] << (3 + nr)) & ~keep_mask;
658 w83791d_write(client, W83791D_REG_VBAT,
659 vbat_reg | tmp_fan_div);
660 }
661
662 /* Restore fan_min */
663 data->fan_min[nr] = fan_to_reg(min, DIV_FROM_REG(data->fan_div[nr]));
664 w83791d_write(client, W83791D_REG_FAN_MIN[nr], data->fan_min[nr]);
665
666#ifdef DEBUG
667err_exit:
668#endif
669 mutex_unlock(&data->update_lock);
670
671 return count;
672}
673
674static struct sensor_device_attribute sda_fan_input[] = {
675 SENSOR_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0),
676 SENSOR_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1),
677 SENSOR_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2),
678 SENSOR_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3),
679 SENSOR_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 4),
680};
681
682static struct sensor_device_attribute sda_fan_min[] = {
683 SENSOR_ATTR(fan1_min, S_IWUSR | S_IRUGO,
684 show_fan_min, store_fan_min, 0),
685 SENSOR_ATTR(fan2_min, S_IWUSR | S_IRUGO,
686 show_fan_min, store_fan_min, 1),
687 SENSOR_ATTR(fan3_min, S_IWUSR | S_IRUGO,
688 show_fan_min, store_fan_min, 2),
689 SENSOR_ATTR(fan4_min, S_IWUSR | S_IRUGO,
690 show_fan_min, store_fan_min, 3),
691 SENSOR_ATTR(fan5_min, S_IWUSR | S_IRUGO,
692 show_fan_min, store_fan_min, 4),
693};
694
695static struct sensor_device_attribute sda_fan_div[] = {
696 SENSOR_ATTR(fan1_div, S_IWUSR | S_IRUGO,
697 show_fan_div, store_fan_div, 0),
698 SENSOR_ATTR(fan2_div, S_IWUSR | S_IRUGO,
699 show_fan_div, store_fan_div, 1),
700 SENSOR_ATTR(fan3_div, S_IWUSR | S_IRUGO,
701 show_fan_div, store_fan_div, 2),
702 SENSOR_ATTR(fan4_div, S_IWUSR | S_IRUGO,
703 show_fan_div, store_fan_div, 3),
704 SENSOR_ATTR(fan5_div, S_IWUSR | S_IRUGO,
705 show_fan_div, store_fan_div, 4),
706};
707
708static struct sensor_device_attribute sda_fan_beep[] = {
709 SENSOR_ATTR(fan1_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 6),
710 SENSOR_ATTR(fan2_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 7),
711 SENSOR_ATTR(fan3_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 11),
712 SENSOR_ATTR(fan4_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 21),
713 SENSOR_ATTR(fan5_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 22),
714};
715
716static struct sensor_device_attribute sda_fan_alarm[] = {
717 SENSOR_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6),
718 SENSOR_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7),
719 SENSOR_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 11),
720 SENSOR_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 21),
721 SENSOR_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 22),
722};
723
724/* read/write PWMs */
725static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
726 char *buf)
727{
728 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
729 int nr = sensor_attr->index;
730 struct w83791d_data *data = w83791d_update_device(dev);
731 return sprintf(buf, "%u\n", data->pwm[nr]);
732}
733
734static ssize_t store_pwm(struct device *dev, struct device_attribute *attr,
735 const char *buf, size_t count)
736{
737 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
738 struct i2c_client *client = to_i2c_client(dev);
739 struct w83791d_data *data = i2c_get_clientdata(client);
740 int nr = sensor_attr->index;
741 unsigned long val;
742
743 if (kstrtoul(buf, 10, &val))
744 return -EINVAL;
745
746 mutex_lock(&data->update_lock);
747 data->pwm[nr] = clamp_val(val, 0, 255);
748 w83791d_write(client, W83791D_REG_PWM[nr], data->pwm[nr]);
749 mutex_unlock(&data->update_lock);
750 return count;
751}
752
753static struct sensor_device_attribute sda_pwm[] = {
754 SENSOR_ATTR(pwm1, S_IWUSR | S_IRUGO,
755 show_pwm, store_pwm, 0),
756 SENSOR_ATTR(pwm2, S_IWUSR | S_IRUGO,
757 show_pwm, store_pwm, 1),
758 SENSOR_ATTR(pwm3, S_IWUSR | S_IRUGO,
759 show_pwm, store_pwm, 2),
760 SENSOR_ATTR(pwm4, S_IWUSR | S_IRUGO,
761 show_pwm, store_pwm, 3),
762 SENSOR_ATTR(pwm5, S_IWUSR | S_IRUGO,
763 show_pwm, store_pwm, 4),
764};
765
766static ssize_t show_pwmenable(struct device *dev, struct device_attribute *attr,
767 char *buf)
768{
769 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
770 int nr = sensor_attr->index;
771 struct w83791d_data *data = w83791d_update_device(dev);
772 return sprintf(buf, "%u\n", data->pwm_enable[nr] + 1);
773}
774
775static ssize_t store_pwmenable(struct device *dev,
776 struct device_attribute *attr, const char *buf, size_t count)
777{
778 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
779 struct i2c_client *client = to_i2c_client(dev);
780 struct w83791d_data *data = i2c_get_clientdata(client);
781 int nr = sensor_attr->index;
782 unsigned long val;
783 u8 reg_cfg_tmp;
784 u8 reg_idx = 0;
785 u8 val_shift = 0;
786 u8 keep_mask = 0;
787
788 int ret = kstrtoul(buf, 10, &val);
789
790 if (ret || val < 1 || val > 3)
791 return -EINVAL;
792
793 mutex_lock(&data->update_lock);
794 data->pwm_enable[nr] = val - 1;
795 switch (nr) {
796 case 0:
797 reg_idx = 0;
798 val_shift = 2;
799 keep_mask = 0xf3;
800 break;
801 case 1:
802 reg_idx = 0;
803 val_shift = 4;
804 keep_mask = 0xcf;
805 break;
806 case 2:
807 reg_idx = 1;
808 val_shift = 2;
809 keep_mask = 0xf3;
810 break;
811 }
812
813 reg_cfg_tmp = w83791d_read(client, W83791D_REG_FAN_CFG[reg_idx]);
814 reg_cfg_tmp = (reg_cfg_tmp & keep_mask) |
815 data->pwm_enable[nr] << val_shift;
816
817 w83791d_write(client, W83791D_REG_FAN_CFG[reg_idx], reg_cfg_tmp);
818 mutex_unlock(&data->update_lock);
819
820 return count;
821}
822static struct sensor_device_attribute sda_pwmenable[] = {
823 SENSOR_ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
824 show_pwmenable, store_pwmenable, 0),
825 SENSOR_ATTR(pwm2_enable, S_IWUSR | S_IRUGO,
826 show_pwmenable, store_pwmenable, 1),
827 SENSOR_ATTR(pwm3_enable, S_IWUSR | S_IRUGO,
828 show_pwmenable, store_pwmenable, 2),
829};
830
831/* For Smart Fan I / Thermal Cruise */
832static ssize_t show_temp_target(struct device *dev,
833 struct device_attribute *attr, char *buf)
834{
835 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
836 struct w83791d_data *data = w83791d_update_device(dev);
837 int nr = sensor_attr->index;
838 return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp_target[nr]));
839}
840
841static ssize_t store_temp_target(struct device *dev,
842 struct device_attribute *attr, const char *buf, size_t count)
843{
844 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
845 struct i2c_client *client = to_i2c_client(dev);
846 struct w83791d_data *data = i2c_get_clientdata(client);
847 int nr = sensor_attr->index;
848 long val;
849 u8 target_mask;
850
851 if (kstrtol(buf, 10, &val))
852 return -EINVAL;
853
854 mutex_lock(&data->update_lock);
855 data->temp_target[nr] = TARGET_TEMP_TO_REG(val);
856 target_mask = w83791d_read(client,
857 W83791D_REG_TEMP_TARGET[nr]) & 0x80;
858 w83791d_write(client, W83791D_REG_TEMP_TARGET[nr],
859 data->temp_target[nr] | target_mask);
860 mutex_unlock(&data->update_lock);
861 return count;
862}
863
864static struct sensor_device_attribute sda_temp_target[] = {
865 SENSOR_ATTR(temp1_target, S_IWUSR | S_IRUGO,
866 show_temp_target, store_temp_target, 0),
867 SENSOR_ATTR(temp2_target, S_IWUSR | S_IRUGO,
868 show_temp_target, store_temp_target, 1),
869 SENSOR_ATTR(temp3_target, S_IWUSR | S_IRUGO,
870 show_temp_target, store_temp_target, 2),
871};
872
873static ssize_t show_temp_tolerance(struct device *dev,
874 struct device_attribute *attr, char *buf)
875{
876 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
877 struct w83791d_data *data = w83791d_update_device(dev);
878 int nr = sensor_attr->index;
879 return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp_tolerance[nr]));
880}
881
882static ssize_t store_temp_tolerance(struct device *dev,
883 struct device_attribute *attr, const char *buf, size_t count)
884{
885 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
886 struct i2c_client *client = to_i2c_client(dev);
887 struct w83791d_data *data = i2c_get_clientdata(client);
888 int nr = sensor_attr->index;
889 unsigned long val;
890 u8 target_mask;
891 u8 reg_idx = 0;
892 u8 val_shift = 0;
893 u8 keep_mask = 0;
894
895 if (kstrtoul(buf, 10, &val))
896 return -EINVAL;
897
898 switch (nr) {
899 case 0:
900 reg_idx = 0;
901 val_shift = 0;
902 keep_mask = 0xf0;
903 break;
904 case 1:
905 reg_idx = 0;
906 val_shift = 4;
907 keep_mask = 0x0f;
908 break;
909 case 2:
910 reg_idx = 1;
911 val_shift = 0;
912 keep_mask = 0xf0;
913 break;
914 }
915
916 mutex_lock(&data->update_lock);
917 data->temp_tolerance[nr] = TOL_TEMP_TO_REG(val);
918 target_mask = w83791d_read(client,
919 W83791D_REG_TEMP_TOL[reg_idx]) & keep_mask;
920 w83791d_write(client, W83791D_REG_TEMP_TOL[reg_idx],
921 (data->temp_tolerance[nr] << val_shift) | target_mask);
922 mutex_unlock(&data->update_lock);
923 return count;
924}
925
926static struct sensor_device_attribute sda_temp_tolerance[] = {
927 SENSOR_ATTR(temp1_tolerance, S_IWUSR | S_IRUGO,
928 show_temp_tolerance, store_temp_tolerance, 0),
929 SENSOR_ATTR(temp2_tolerance, S_IWUSR | S_IRUGO,
930 show_temp_tolerance, store_temp_tolerance, 1),
931 SENSOR_ATTR(temp3_tolerance, S_IWUSR | S_IRUGO,
932 show_temp_tolerance, store_temp_tolerance, 2),
933};
934
935/* read/write the temperature1, includes measured value and limits */
936static ssize_t show_temp1(struct device *dev, struct device_attribute *devattr,
937 char *buf)
938{
939 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
940 struct w83791d_data *data = w83791d_update_device(dev);
941 return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp1[attr->index]));
942}
943
944static ssize_t store_temp1(struct device *dev, struct device_attribute *devattr,
945 const char *buf, size_t count)
946{
947 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
948 struct i2c_client *client = to_i2c_client(dev);
949 struct w83791d_data *data = i2c_get_clientdata(client);
950 int nr = attr->index;
951 long val;
952 int err;
953
954 err = kstrtol(buf, 10, &val);
955 if (err)
956 return err;
957
958 mutex_lock(&data->update_lock);
959 data->temp1[nr] = TEMP1_TO_REG(val);
960 w83791d_write(client, W83791D_REG_TEMP1[nr], data->temp1[nr]);
961 mutex_unlock(&data->update_lock);
962 return count;
963}
964
965/* read/write temperature2-3, includes measured value and limits */
966static ssize_t show_temp23(struct device *dev, struct device_attribute *devattr,
967 char *buf)
968{
969 struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
970 struct w83791d_data *data = w83791d_update_device(dev);
971 int nr = attr->nr;
972 int index = attr->index;
973 return sprintf(buf, "%d\n", TEMP23_FROM_REG(data->temp_add[nr][index]));
974}
975
976static ssize_t store_temp23(struct device *dev,
977 struct device_attribute *devattr,
978 const char *buf, size_t count)
979{
980 struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
981 struct i2c_client *client = to_i2c_client(dev);
982 struct w83791d_data *data = i2c_get_clientdata(client);
983 long val;
984 int err;
985 int nr = attr->nr;
986 int index = attr->index;
987
988 err = kstrtol(buf, 10, &val);
989 if (err)
990 return err;
991
992 mutex_lock(&data->update_lock);
993 data->temp_add[nr][index] = TEMP23_TO_REG(val);
994 w83791d_write(client, W83791D_REG_TEMP_ADD[nr][index * 2],
995 data->temp_add[nr][index] >> 8);
996 w83791d_write(client, W83791D_REG_TEMP_ADD[nr][index * 2 + 1],
997 data->temp_add[nr][index] & 0x80);
998 mutex_unlock(&data->update_lock);
999
1000 return count;
1001}
1002
1003static struct sensor_device_attribute_2 sda_temp_input[] = {
1004 SENSOR_ATTR_2(temp1_input, S_IRUGO, show_temp1, NULL, 0, 0),
1005 SENSOR_ATTR_2(temp2_input, S_IRUGO, show_temp23, NULL, 0, 0),
1006 SENSOR_ATTR_2(temp3_input, S_IRUGO, show_temp23, NULL, 1, 0),
1007};
1008
1009static struct sensor_device_attribute_2 sda_temp_max[] = {
1010 SENSOR_ATTR_2(temp1_max, S_IRUGO | S_IWUSR,
1011 show_temp1, store_temp1, 0, 1),
1012 SENSOR_ATTR_2(temp2_max, S_IRUGO | S_IWUSR,
1013 show_temp23, store_temp23, 0, 1),
1014 SENSOR_ATTR_2(temp3_max, S_IRUGO | S_IWUSR,
1015 show_temp23, store_temp23, 1, 1),
1016};
1017
1018static struct sensor_device_attribute_2 sda_temp_max_hyst[] = {
1019 SENSOR_ATTR_2(temp1_max_hyst, S_IRUGO | S_IWUSR,
1020 show_temp1, store_temp1, 0, 2),
1021 SENSOR_ATTR_2(temp2_max_hyst, S_IRUGO | S_IWUSR,
1022 show_temp23, store_temp23, 0, 2),
1023 SENSOR_ATTR_2(temp3_max_hyst, S_IRUGO | S_IWUSR,
1024 show_temp23, store_temp23, 1, 2),
1025};
1026
1027/*
1028 * Note: The bitmask for the beep enable/disable is different than
1029 * the bitmask for the alarm.
1030 */
1031static struct sensor_device_attribute sda_temp_beep[] = {
1032 SENSOR_ATTR(temp1_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 4),
1033 SENSOR_ATTR(temp2_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 5),
1034 SENSOR_ATTR(temp3_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 1),
1035};
1036
1037static struct sensor_device_attribute sda_temp_alarm[] = {
1038 SENSOR_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4),
1039 SENSOR_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5),
1040 SENSOR_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 13),
1041};
1042
1043/* get realtime status of all sensors items: voltage, temp, fan */
1044static ssize_t alarms_show(struct device *dev, struct device_attribute *attr,
1045 char *buf)
1046{
1047 struct w83791d_data *data = w83791d_update_device(dev);
1048 return sprintf(buf, "%u\n", data->alarms);
1049}
1050
1051static DEVICE_ATTR_RO(alarms);
1052
1053/* Beep control */
1054
1055#define GLOBAL_BEEP_ENABLE_SHIFT 15
1056#define GLOBAL_BEEP_ENABLE_MASK (1 << GLOBAL_BEEP_ENABLE_SHIFT)
1057
1058static ssize_t show_beep_enable(struct device *dev,
1059 struct device_attribute *attr, char *buf)
1060{
1061 struct w83791d_data *data = w83791d_update_device(dev);
1062 return sprintf(buf, "%d\n", data->beep_enable);
1063}
1064
1065static ssize_t show_beep_mask(struct device *dev,
1066 struct device_attribute *attr, char *buf)
1067{
1068 struct w83791d_data *data = w83791d_update_device(dev);
1069 return sprintf(buf, "%d\n", BEEP_MASK_FROM_REG(data->beep_mask));
1070}
1071
1072
1073static ssize_t store_beep_mask(struct device *dev,
1074 struct device_attribute *attr,
1075 const char *buf, size_t count)
1076{
1077 struct i2c_client *client = to_i2c_client(dev);
1078 struct w83791d_data *data = i2c_get_clientdata(client);
1079 int i;
1080 long val;
1081 int err;
1082
1083 err = kstrtol(buf, 10, &val);
1084 if (err)
1085 return err;
1086
1087 mutex_lock(&data->update_lock);
1088
1089 /*
1090 * The beep_enable state overrides any enabling request from
1091 * the masks
1092 */
1093 data->beep_mask = BEEP_MASK_TO_REG(val) & ~GLOBAL_BEEP_ENABLE_MASK;
1094 data->beep_mask |= (data->beep_enable << GLOBAL_BEEP_ENABLE_SHIFT);
1095
1096 val = data->beep_mask;
1097
1098 for (i = 0; i < 3; i++) {
1099 w83791d_write(client, W83791D_REG_BEEP_CTRL[i], (val & 0xff));
1100 val >>= 8;
1101 }
1102
1103 mutex_unlock(&data->update_lock);
1104
1105 return count;
1106}
1107
1108static ssize_t store_beep_enable(struct device *dev,
1109 struct device_attribute *attr,
1110 const char *buf, size_t count)
1111{
1112 struct i2c_client *client = to_i2c_client(dev);
1113 struct w83791d_data *data = i2c_get_clientdata(client);
1114 long val;
1115 int err;
1116
1117 err = kstrtol(buf, 10, &val);
1118 if (err)
1119 return err;
1120
1121 mutex_lock(&data->update_lock);
1122
1123 data->beep_enable = val ? 1 : 0;
1124
1125 /* Keep the full mask value in sync with the current enable */
1126 data->beep_mask &= ~GLOBAL_BEEP_ENABLE_MASK;
1127 data->beep_mask |= (data->beep_enable << GLOBAL_BEEP_ENABLE_SHIFT);
1128
1129 /*
1130 * The global control is in the second beep control register
1131 * so only need to update that register
1132 */
1133 val = (data->beep_mask >> 8) & 0xff;
1134
1135 w83791d_write(client, W83791D_REG_BEEP_CTRL[1], val);
1136
1137 mutex_unlock(&data->update_lock);
1138
1139 return count;
1140}
1141
1142static struct sensor_device_attribute sda_beep_ctrl[] = {
1143 SENSOR_ATTR(beep_enable, S_IRUGO | S_IWUSR,
1144 show_beep_enable, store_beep_enable, 0),
1145 SENSOR_ATTR(beep_mask, S_IRUGO | S_IWUSR,
1146 show_beep_mask, store_beep_mask, 1)
1147};
1148
1149/* cpu voltage regulation information */
1150static ssize_t cpu0_vid_show(struct device *dev,
1151 struct device_attribute *attr, char *buf)
1152{
1153 struct w83791d_data *data = w83791d_update_device(dev);
1154 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
1155}
1156
1157static DEVICE_ATTR_RO(cpu0_vid);
1158
1159static ssize_t vrm_show(struct device *dev, struct device_attribute *attr,
1160 char *buf)
1161{
1162 struct w83791d_data *data = dev_get_drvdata(dev);
1163 return sprintf(buf, "%d\n", data->vrm);
1164}
1165
1166static ssize_t vrm_store(struct device *dev, struct device_attribute *attr,
1167 const char *buf, size_t count)
1168{
1169 struct w83791d_data *data = dev_get_drvdata(dev);
1170 unsigned long val;
1171 int err;
1172
1173 /*
1174 * No lock needed as vrm is internal to the driver
1175 * (not read from a chip register) and so is not
1176 * updated in w83791d_update_device()
1177 */
1178
1179 err = kstrtoul(buf, 10, &val);
1180 if (err)
1181 return err;
1182
1183 if (val > 255)
1184 return -EINVAL;
1185
1186 data->vrm = val;
1187 return count;
1188}
1189
1190static DEVICE_ATTR_RW(vrm);
1191
1192#define IN_UNIT_ATTRS(X) \
1193 &sda_in_input[X].dev_attr.attr, \
1194 &sda_in_min[X].dev_attr.attr, \
1195 &sda_in_max[X].dev_attr.attr, \
1196 &sda_in_beep[X].dev_attr.attr, \
1197 &sda_in_alarm[X].dev_attr.attr
1198
1199#define FAN_UNIT_ATTRS(X) \
1200 &sda_fan_input[X].dev_attr.attr, \
1201 &sda_fan_min[X].dev_attr.attr, \
1202 &sda_fan_div[X].dev_attr.attr, \
1203 &sda_fan_beep[X].dev_attr.attr, \
1204 &sda_fan_alarm[X].dev_attr.attr
1205
1206#define TEMP_UNIT_ATTRS(X) \
1207 &sda_temp_input[X].dev_attr.attr, \
1208 &sda_temp_max[X].dev_attr.attr, \
1209 &sda_temp_max_hyst[X].dev_attr.attr, \
1210 &sda_temp_beep[X].dev_attr.attr, \
1211 &sda_temp_alarm[X].dev_attr.attr
1212
1213static struct attribute *w83791d_attributes[] = {
1214 IN_UNIT_ATTRS(0),
1215 IN_UNIT_ATTRS(1),
1216 IN_UNIT_ATTRS(2),
1217 IN_UNIT_ATTRS(3),
1218 IN_UNIT_ATTRS(4),
1219 IN_UNIT_ATTRS(5),
1220 IN_UNIT_ATTRS(6),
1221 IN_UNIT_ATTRS(7),
1222 IN_UNIT_ATTRS(8),
1223 IN_UNIT_ATTRS(9),
1224 FAN_UNIT_ATTRS(0),
1225 FAN_UNIT_ATTRS(1),
1226 FAN_UNIT_ATTRS(2),
1227 TEMP_UNIT_ATTRS(0),
1228 TEMP_UNIT_ATTRS(1),
1229 TEMP_UNIT_ATTRS(2),
1230 &dev_attr_alarms.attr,
1231 &sda_beep_ctrl[0].dev_attr.attr,
1232 &sda_beep_ctrl[1].dev_attr.attr,
1233 &dev_attr_cpu0_vid.attr,
1234 &dev_attr_vrm.attr,
1235 &sda_pwm[0].dev_attr.attr,
1236 &sda_pwm[1].dev_attr.attr,
1237 &sda_pwm[2].dev_attr.attr,
1238 &sda_pwmenable[0].dev_attr.attr,
1239 &sda_pwmenable[1].dev_attr.attr,
1240 &sda_pwmenable[2].dev_attr.attr,
1241 &sda_temp_target[0].dev_attr.attr,
1242 &sda_temp_target[1].dev_attr.attr,
1243 &sda_temp_target[2].dev_attr.attr,
1244 &sda_temp_tolerance[0].dev_attr.attr,
1245 &sda_temp_tolerance[1].dev_attr.attr,
1246 &sda_temp_tolerance[2].dev_attr.attr,
1247 NULL
1248};
1249
1250static const struct attribute_group w83791d_group = {
1251 .attrs = w83791d_attributes,
1252};
1253
1254/*
1255 * Separate group of attributes for fan/pwm 4-5. Their pins can also be
1256 * in use for GPIO in which case their sysfs-interface should not be made
1257 * available
1258 */
1259static struct attribute *w83791d_attributes_fanpwm45[] = {
1260 FAN_UNIT_ATTRS(3),
1261 FAN_UNIT_ATTRS(4),
1262 &sda_pwm[3].dev_attr.attr,
1263 &sda_pwm[4].dev_attr.attr,
1264 NULL
1265};
1266
1267static const struct attribute_group w83791d_group_fanpwm45 = {
1268 .attrs = w83791d_attributes_fanpwm45,
1269};
1270
1271static int w83791d_detect_subclients(struct i2c_client *client)
1272{
1273 struct i2c_adapter *adapter = client->adapter;
1274 struct w83791d_data *data = i2c_get_clientdata(client);
1275 int address = client->addr;
1276 int i, id, err;
1277 u8 val;
1278
1279 id = i2c_adapter_id(adapter);
1280 if (force_subclients[0] == id && force_subclients[1] == address) {
1281 for (i = 2; i <= 3; i++) {
1282 if (force_subclients[i] < 0x48 ||
1283 force_subclients[i] > 0x4f) {
1284 dev_err(&client->dev,
1285 "invalid subclient "
1286 "address %d; must be 0x48-0x4f\n",
1287 force_subclients[i]);
1288 err = -ENODEV;
1289 goto error_sc_0;
1290 }
1291 }
1292 w83791d_write(client, W83791D_REG_I2C_SUBADDR,
1293 (force_subclients[2] & 0x07) |
1294 ((force_subclients[3] & 0x07) << 4));
1295 }
1296
1297 val = w83791d_read(client, W83791D_REG_I2C_SUBADDR);
1298 if (!(val & 0x08))
1299 data->lm75[0] = i2c_new_dummy(adapter, 0x48 + (val & 0x7));
1300 if (!(val & 0x80)) {
1301 if ((data->lm75[0] != NULL) &&
1302 ((val & 0x7) == ((val >> 4) & 0x7))) {
1303 dev_err(&client->dev,
1304 "duplicate addresses 0x%x, "
1305 "use force_subclient\n",
1306 data->lm75[0]->addr);
1307 err = -ENODEV;
1308 goto error_sc_1;
1309 }
1310 data->lm75[1] = i2c_new_dummy(adapter,
1311 0x48 + ((val >> 4) & 0x7));
1312 }
1313
1314 return 0;
1315
1316/* Undo inits in case of errors */
1317
1318error_sc_1:
1319 i2c_unregister_device(data->lm75[0]);
1320error_sc_0:
1321 return err;
1322}
1323
1324
1325/* Return 0 if detection is successful, -ENODEV otherwise */
1326static int w83791d_detect(struct i2c_client *client,
1327 struct i2c_board_info *info)
1328{
1329 struct i2c_adapter *adapter = client->adapter;
1330 int val1, val2;
1331 unsigned short address = client->addr;
1332
1333 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1334 return -ENODEV;
1335
1336 if (w83791d_read(client, W83791D_REG_CONFIG) & 0x80)
1337 return -ENODEV;
1338
1339 val1 = w83791d_read(client, W83791D_REG_BANK);
1340 val2 = w83791d_read(client, W83791D_REG_CHIPMAN);
1341 /* Check for Winbond ID if in bank 0 */
1342 if (!(val1 & 0x07)) {
1343 if ((!(val1 & 0x80) && val2 != 0xa3) ||
1344 ((val1 & 0x80) && val2 != 0x5c)) {
1345 return -ENODEV;
1346 }
1347 }
1348 /*
1349 * If Winbond chip, address of chip and W83791D_REG_I2C_ADDR
1350 * should match
1351 */
1352 if (w83791d_read(client, W83791D_REG_I2C_ADDR) != address)
1353 return -ENODEV;
1354
1355 /* We want bank 0 and Vendor ID high byte */
1356 val1 = w83791d_read(client, W83791D_REG_BANK) & 0x78;
1357 w83791d_write(client, W83791D_REG_BANK, val1 | 0x80);
1358
1359 /* Verify it is a Winbond w83791d */
1360 val1 = w83791d_read(client, W83791D_REG_WCHIPID);
1361 val2 = w83791d_read(client, W83791D_REG_CHIPMAN);
1362 if (val1 != 0x71 || val2 != 0x5c)
1363 return -ENODEV;
1364
1365 strlcpy(info->type, "w83791d", I2C_NAME_SIZE);
1366
1367 return 0;
1368}
1369
1370static int w83791d_probe(struct i2c_client *client,
1371 const struct i2c_device_id *id)
1372{
1373 struct w83791d_data *data;
1374 struct device *dev = &client->dev;
1375 int i, err;
1376 u8 has_fanpwm45;
1377
1378#ifdef DEBUG
1379 int val1;
1380 val1 = w83791d_read(client, W83791D_REG_DID_VID4);
1381 dev_dbg(dev, "Device ID version: %d.%d (0x%02x)\n",
1382 (val1 >> 5) & 0x07, (val1 >> 1) & 0x0f, val1);
1383#endif
1384
1385 data = devm_kzalloc(&client->dev, sizeof(struct w83791d_data),
1386 GFP_KERNEL);
1387 if (!data)
1388 return -ENOMEM;
1389
1390 i2c_set_clientdata(client, data);
1391 mutex_init(&data->update_lock);
1392
1393 err = w83791d_detect_subclients(client);
1394 if (err)
1395 return err;
1396
1397 /* Initialize the chip */
1398 w83791d_init_client(client);
1399
1400 /*
1401 * If the fan_div is changed, make sure there is a rational
1402 * fan_min in place
1403 */
1404 for (i = 0; i < NUMBER_OF_FANIN; i++)
1405 data->fan_min[i] = w83791d_read(client, W83791D_REG_FAN_MIN[i]);
1406
1407 /* Register sysfs hooks */
1408 err = sysfs_create_group(&client->dev.kobj, &w83791d_group);
1409 if (err)
1410 goto error3;
1411
1412 /* Check if pins of fan/pwm 4-5 are in use as GPIO */
1413 has_fanpwm45 = w83791d_read(client, W83791D_REG_GPIO) & 0x10;
1414 if (has_fanpwm45) {
1415 err = sysfs_create_group(&client->dev.kobj,
1416 &w83791d_group_fanpwm45);
1417 if (err)
1418 goto error4;
1419 }
1420
1421 /* Everything is ready, now register the working device */
1422 data->hwmon_dev = hwmon_device_register(dev);
1423 if (IS_ERR(data->hwmon_dev)) {
1424 err = PTR_ERR(data->hwmon_dev);
1425 goto error5;
1426 }
1427
1428 return 0;
1429
1430error5:
1431 if (has_fanpwm45)
1432 sysfs_remove_group(&client->dev.kobj, &w83791d_group_fanpwm45);
1433error4:
1434 sysfs_remove_group(&client->dev.kobj, &w83791d_group);
1435error3:
1436 i2c_unregister_device(data->lm75[0]);
1437 i2c_unregister_device(data->lm75[1]);
1438 return err;
1439}
1440
1441static int w83791d_remove(struct i2c_client *client)
1442{
1443 struct w83791d_data *data = i2c_get_clientdata(client);
1444
1445 hwmon_device_unregister(data->hwmon_dev);
1446 sysfs_remove_group(&client->dev.kobj, &w83791d_group);
1447
1448 i2c_unregister_device(data->lm75[0]);
1449 i2c_unregister_device(data->lm75[1]);
1450
1451 return 0;
1452}
1453
1454static void w83791d_init_client(struct i2c_client *client)
1455{
1456 struct w83791d_data *data = i2c_get_clientdata(client);
1457 u8 tmp;
1458 u8 old_beep;
1459
1460 /*
1461 * The difference between reset and init is that reset
1462 * does a hard reset of the chip via index 0x40, bit 7,
1463 * but init simply forces certain registers to have "sane"
1464 * values. The hope is that the BIOS has done the right
1465 * thing (which is why the default is reset=0, init=0),
1466 * but if not, reset is the hard hammer and init
1467 * is the soft mallet both of which are trying to whack
1468 * things into place...
1469 * NOTE: The data sheet makes a distinction between
1470 * "power on defaults" and "reset by MR". As far as I can tell,
1471 * the hard reset puts everything into a power-on state so I'm
1472 * not sure what "reset by MR" means or how it can happen.
1473 */
1474 if (reset || init) {
1475 /* keep some BIOS settings when we... */
1476 old_beep = w83791d_read(client, W83791D_REG_BEEP_CONFIG);
1477
1478 if (reset) {
1479 /* ... reset the chip and ... */
1480 w83791d_write(client, W83791D_REG_CONFIG, 0x80);
1481 }
1482
1483 /* ... disable power-on abnormal beep */
1484 w83791d_write(client, W83791D_REG_BEEP_CONFIG, old_beep | 0x80);
1485
1486 /* disable the global beep (not done by hard reset) */
1487 tmp = w83791d_read(client, W83791D_REG_BEEP_CTRL[1]);
1488 w83791d_write(client, W83791D_REG_BEEP_CTRL[1], tmp & 0xef);
1489
1490 if (init) {
1491 /* Make sure monitoring is turned on for add-ons */
1492 tmp = w83791d_read(client, W83791D_REG_TEMP2_CONFIG);
1493 if (tmp & 1) {
1494 w83791d_write(client, W83791D_REG_TEMP2_CONFIG,
1495 tmp & 0xfe);
1496 }
1497
1498 tmp = w83791d_read(client, W83791D_REG_TEMP3_CONFIG);
1499 if (tmp & 1) {
1500 w83791d_write(client, W83791D_REG_TEMP3_CONFIG,
1501 tmp & 0xfe);
1502 }
1503
1504 /* Start monitoring */
1505 tmp = w83791d_read(client, W83791D_REG_CONFIG) & 0xf7;
1506 w83791d_write(client, W83791D_REG_CONFIG, tmp | 0x01);
1507 }
1508 }
1509
1510 data->vrm = vid_which_vrm();
1511}
1512
1513static struct w83791d_data *w83791d_update_device(struct device *dev)
1514{
1515 struct i2c_client *client = to_i2c_client(dev);
1516 struct w83791d_data *data = i2c_get_clientdata(client);
1517 int i, j;
1518 u8 reg_array_tmp[3];
1519 u8 vbat_reg;
1520
1521 mutex_lock(&data->update_lock);
1522
1523 if (time_after(jiffies, data->last_updated + (HZ * 3))
1524 || !data->valid) {
1525 dev_dbg(dev, "Starting w83791d device update\n");
1526
1527 /* Update the voltages measured value and limits */
1528 for (i = 0; i < NUMBER_OF_VIN; i++) {
1529 data->in[i] = w83791d_read(client,
1530 W83791D_REG_IN[i]);
1531 data->in_max[i] = w83791d_read(client,
1532 W83791D_REG_IN_MAX[i]);
1533 data->in_min[i] = w83791d_read(client,
1534 W83791D_REG_IN_MIN[i]);
1535 }
1536
1537 /* Update the fan counts and limits */
1538 for (i = 0; i < NUMBER_OF_FANIN; i++) {
1539 /* Update the Fan measured value and limits */
1540 data->fan[i] = w83791d_read(client,
1541 W83791D_REG_FAN[i]);
1542 data->fan_min[i] = w83791d_read(client,
1543 W83791D_REG_FAN_MIN[i]);
1544 }
1545
1546 /* Update the fan divisor */
1547 for (i = 0; i < 3; i++) {
1548 reg_array_tmp[i] = w83791d_read(client,
1549 W83791D_REG_FAN_DIV[i]);
1550 }
1551 data->fan_div[0] = (reg_array_tmp[0] >> 4) & 0x03;
1552 data->fan_div[1] = (reg_array_tmp[0] >> 6) & 0x03;
1553 data->fan_div[2] = (reg_array_tmp[1] >> 6) & 0x03;
1554 data->fan_div[3] = reg_array_tmp[2] & 0x07;
1555 data->fan_div[4] = (reg_array_tmp[2] >> 4) & 0x07;
1556
1557 /*
1558 * The fan divisor for fans 0-2 get bit 2 from
1559 * bits 5-7 respectively of vbat register
1560 */
1561 vbat_reg = w83791d_read(client, W83791D_REG_VBAT);
1562 for (i = 0; i < 3; i++)
1563 data->fan_div[i] |= (vbat_reg >> (3 + i)) & 0x04;
1564
1565 /* Update PWM duty cycle */
1566 for (i = 0; i < NUMBER_OF_PWM; i++) {
1567 data->pwm[i] = w83791d_read(client,
1568 W83791D_REG_PWM[i]);
1569 }
1570
1571 /* Update PWM enable status */
1572 for (i = 0; i < 2; i++) {
1573 reg_array_tmp[i] = w83791d_read(client,
1574 W83791D_REG_FAN_CFG[i]);
1575 }
1576 data->pwm_enable[0] = (reg_array_tmp[0] >> 2) & 0x03;
1577 data->pwm_enable[1] = (reg_array_tmp[0] >> 4) & 0x03;
1578 data->pwm_enable[2] = (reg_array_tmp[1] >> 2) & 0x03;
1579
1580 /* Update PWM target temperature */
1581 for (i = 0; i < 3; i++) {
1582 data->temp_target[i] = w83791d_read(client,
1583 W83791D_REG_TEMP_TARGET[i]) & 0x7f;
1584 }
1585
1586 /* Update PWM temperature tolerance */
1587 for (i = 0; i < 2; i++) {
1588 reg_array_tmp[i] = w83791d_read(client,
1589 W83791D_REG_TEMP_TOL[i]);
1590 }
1591 data->temp_tolerance[0] = reg_array_tmp[0] & 0x0f;
1592 data->temp_tolerance[1] = (reg_array_tmp[0] >> 4) & 0x0f;
1593 data->temp_tolerance[2] = reg_array_tmp[1] & 0x0f;
1594
1595 /* Update the first temperature sensor */
1596 for (i = 0; i < 3; i++) {
1597 data->temp1[i] = w83791d_read(client,
1598 W83791D_REG_TEMP1[i]);
1599 }
1600
1601 /* Update the rest of the temperature sensors */
1602 for (i = 0; i < 2; i++) {
1603 for (j = 0; j < 3; j++) {
1604 data->temp_add[i][j] =
1605 (w83791d_read(client,
1606 W83791D_REG_TEMP_ADD[i][j * 2]) << 8) |
1607 w83791d_read(client,
1608 W83791D_REG_TEMP_ADD[i][j * 2 + 1]);
1609 }
1610 }
1611
1612 /* Update the realtime status */
1613 data->alarms =
1614 w83791d_read(client, W83791D_REG_ALARM1) +
1615 (w83791d_read(client, W83791D_REG_ALARM2) << 8) +
1616 (w83791d_read(client, W83791D_REG_ALARM3) << 16);
1617
1618 /* Update the beep configuration information */
1619 data->beep_mask =
1620 w83791d_read(client, W83791D_REG_BEEP_CTRL[0]) +
1621 (w83791d_read(client, W83791D_REG_BEEP_CTRL[1]) << 8) +
1622 (w83791d_read(client, W83791D_REG_BEEP_CTRL[2]) << 16);
1623
1624 /* Extract global beep enable flag */
1625 data->beep_enable =
1626 (data->beep_mask >> GLOBAL_BEEP_ENABLE_SHIFT) & 0x01;
1627
1628 /* Update the cpu voltage information */
1629 i = w83791d_read(client, W83791D_REG_VID_FANDIV);
1630 data->vid = i & 0x0f;
1631 data->vid |= (w83791d_read(client, W83791D_REG_DID_VID4) & 0x01)
1632 << 4;
1633
1634 data->last_updated = jiffies;
1635 data->valid = 1;
1636 }
1637
1638 mutex_unlock(&data->update_lock);
1639
1640#ifdef DEBUG
1641 w83791d_print_debug(data, dev);
1642#endif
1643
1644 return data;
1645}
1646
1647#ifdef DEBUG
1648static void w83791d_print_debug(struct w83791d_data *data, struct device *dev)
1649{
1650 int i = 0, j = 0;
1651
1652 dev_dbg(dev, "======Start of w83791d debug values======\n");
1653 dev_dbg(dev, "%d set of Voltages: ===>\n", NUMBER_OF_VIN);
1654 for (i = 0; i < NUMBER_OF_VIN; i++) {
1655 dev_dbg(dev, "vin[%d] is: 0x%02x\n", i, data->in[i]);
1656 dev_dbg(dev, "vin[%d] min is: 0x%02x\n", i, data->in_min[i]);
1657 dev_dbg(dev, "vin[%d] max is: 0x%02x\n", i, data->in_max[i]);
1658 }
1659 dev_dbg(dev, "%d set of Fan Counts/Divisors: ===>\n", NUMBER_OF_FANIN);
1660 for (i = 0; i < NUMBER_OF_FANIN; i++) {
1661 dev_dbg(dev, "fan[%d] is: 0x%02x\n", i, data->fan[i]);
1662 dev_dbg(dev, "fan[%d] min is: 0x%02x\n", i, data->fan_min[i]);
1663 dev_dbg(dev, "fan_div[%d] is: 0x%02x\n", i, data->fan_div[i]);
1664 }
1665
1666 /*
1667 * temperature math is signed, but only print out the
1668 * bits that matter
1669 */
1670 dev_dbg(dev, "%d set of Temperatures: ===>\n", NUMBER_OF_TEMPIN);
1671 for (i = 0; i < 3; i++)
1672 dev_dbg(dev, "temp1[%d] is: 0x%02x\n", i, (u8) data->temp1[i]);
1673 for (i = 0; i < 2; i++) {
1674 for (j = 0; j < 3; j++) {
1675 dev_dbg(dev, "temp_add[%d][%d] is: 0x%04x\n", i, j,
1676 (u16) data->temp_add[i][j]);
1677 }
1678 }
1679
1680 dev_dbg(dev, "Misc Information: ===>\n");
1681 dev_dbg(dev, "alarm is: 0x%08x\n", data->alarms);
1682 dev_dbg(dev, "beep_mask is: 0x%08x\n", data->beep_mask);
1683 dev_dbg(dev, "beep_enable is: %d\n", data->beep_enable);
1684 dev_dbg(dev, "vid is: 0x%02x\n", data->vid);
1685 dev_dbg(dev, "vrm is: 0x%02x\n", data->vrm);
1686 dev_dbg(dev, "=======End of w83791d debug values========\n");
1687 dev_dbg(dev, "\n");
1688}
1689#endif
1690
1691module_i2c_driver(w83791d_driver);
1692
1693MODULE_AUTHOR("Charles Spirakis <bezaur@gmail.com>");
1694MODULE_DESCRIPTION("W83791D driver");
1695MODULE_LICENSE("GPL");
1696