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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * w83791d.c - Part of lm_sensors, Linux kernel modules for hardware
4 * monitoring
5 *
6 * Copyright (C) 2006-2007 Charles Spirakis <bezaur@gmail.com>
7 */
8
9/*
10 * Supports following chips:
11 *
12 * Chip #vin #fanin #pwm #temp wchipid vendid i2c ISA
13 * w83791d 10 5 5 3 0x71 0x5ca3 yes no
14 *
15 * The w83791d chip appears to be part way between the 83781d and the
16 * 83792d. Thus, this file is derived from both the w83792d.c and
17 * w83781d.c files.
18 *
19 * The w83791g chip is the same as the w83791d but lead-free.
20 */
21
22#include <linux/module.h>
23#include <linux/init.h>
24#include <linux/slab.h>
25#include <linux/i2c.h>
26#include <linux/hwmon.h>
27#include <linux/hwmon-vid.h>
28#include <linux/hwmon-sysfs.h>
29#include <linux/err.h>
30#include <linux/mutex.h>
31#include <linux/jiffies.h>
32
33#define NUMBER_OF_VIN 10
34#define NUMBER_OF_FANIN 5
35#define NUMBER_OF_TEMPIN 3
36#define NUMBER_OF_PWM 5
37
38/* Addresses to scan */
39static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f,
40 I2C_CLIENT_END };
41
42/* Insmod parameters */
43
44static unsigned short force_subclients[4];
45module_param_array(force_subclients, short, NULL, 0);
46MODULE_PARM_DESC(force_subclients,
47 "List of subclient addresses: {bus, clientaddr, subclientaddr1, subclientaddr2}");
48
49static bool reset;
50module_param(reset, bool, 0);
51MODULE_PARM_DESC(reset, "Set to one to force a hardware chip reset");
52
53static bool init;
54module_param(init, bool, 0);
55MODULE_PARM_DESC(init, "Set to one to force extra software initialization");
56
57/* The W83791D registers */
58static const u8 W83791D_REG_IN[NUMBER_OF_VIN] = {
59 0x20, /* VCOREA in DataSheet */
60 0x21, /* VINR0 in DataSheet */
61 0x22, /* +3.3VIN in DataSheet */
62 0x23, /* VDD5V in DataSheet */
63 0x24, /* +12VIN in DataSheet */
64 0x25, /* -12VIN in DataSheet */
65 0x26, /* -5VIN in DataSheet */
66 0xB0, /* 5VSB in DataSheet */
67 0xB1, /* VBAT in DataSheet */
68 0xB2 /* VINR1 in DataSheet */
69};
70
71static const u8 W83791D_REG_IN_MAX[NUMBER_OF_VIN] = {
72 0x2B, /* VCOREA High Limit in DataSheet */
73 0x2D, /* VINR0 High Limit in DataSheet */
74 0x2F, /* +3.3VIN High Limit in DataSheet */
75 0x31, /* VDD5V High Limit in DataSheet */
76 0x33, /* +12VIN High Limit in DataSheet */
77 0x35, /* -12VIN High Limit in DataSheet */
78 0x37, /* -5VIN High Limit in DataSheet */
79 0xB4, /* 5VSB High Limit in DataSheet */
80 0xB6, /* VBAT High Limit in DataSheet */
81 0xB8 /* VINR1 High Limit in DataSheet */
82};
83static const u8 W83791D_REG_IN_MIN[NUMBER_OF_VIN] = {
84 0x2C, /* VCOREA Low Limit in DataSheet */
85 0x2E, /* VINR0 Low Limit in DataSheet */
86 0x30, /* +3.3VIN Low Limit in DataSheet */
87 0x32, /* VDD5V Low Limit in DataSheet */
88 0x34, /* +12VIN Low Limit in DataSheet */
89 0x36, /* -12VIN Low Limit in DataSheet */
90 0x38, /* -5VIN Low Limit in DataSheet */
91 0xB5, /* 5VSB Low Limit in DataSheet */
92 0xB7, /* VBAT Low Limit in DataSheet */
93 0xB9 /* VINR1 Low Limit in DataSheet */
94};
95static const u8 W83791D_REG_FAN[NUMBER_OF_FANIN] = {
96 0x28, /* FAN 1 Count in DataSheet */
97 0x29, /* FAN 2 Count in DataSheet */
98 0x2A, /* FAN 3 Count in DataSheet */
99 0xBA, /* FAN 4 Count in DataSheet */
100 0xBB, /* FAN 5 Count in DataSheet */
101};
102static const u8 W83791D_REG_FAN_MIN[NUMBER_OF_FANIN] = {
103 0x3B, /* FAN 1 Count Low Limit in DataSheet */
104 0x3C, /* FAN 2 Count Low Limit in DataSheet */
105 0x3D, /* FAN 3 Count Low Limit in DataSheet */
106 0xBC, /* FAN 4 Count Low Limit in DataSheet */
107 0xBD, /* FAN 5 Count Low Limit in DataSheet */
108};
109
110static const u8 W83791D_REG_PWM[NUMBER_OF_PWM] = {
111 0x81, /* PWM 1 duty cycle register in DataSheet */
112 0x83, /* PWM 2 duty cycle register in DataSheet */
113 0x94, /* PWM 3 duty cycle register in DataSheet */
114 0xA0, /* PWM 4 duty cycle register in DataSheet */
115 0xA1, /* PWM 5 duty cycle register in DataSheet */
116};
117
118static const u8 W83791D_REG_TEMP_TARGET[3] = {
119 0x85, /* PWM 1 target temperature for temp 1 */
120 0x86, /* PWM 2 target temperature for temp 2 */
121 0x96, /* PWM 3 target temperature for temp 3 */
122};
123
124static const u8 W83791D_REG_TEMP_TOL[2] = {
125 0x87, /* PWM 1/2 temperature tolerance */
126 0x97, /* PWM 3 temperature tolerance */
127};
128
129static const u8 W83791D_REG_FAN_CFG[2] = {
130 0x84, /* FAN 1/2 configuration */
131 0x95, /* FAN 3 configuration */
132};
133
134static const u8 W83791D_REG_FAN_DIV[3] = {
135 0x47, /* contains FAN1 and FAN2 Divisor */
136 0x4b, /* contains FAN3 Divisor */
137 0x5C, /* contains FAN4 and FAN5 Divisor */
138};
139
140#define W83791D_REG_BANK 0x4E
141#define W83791D_REG_TEMP2_CONFIG 0xC2
142#define W83791D_REG_TEMP3_CONFIG 0xCA
143
144static const u8 W83791D_REG_TEMP1[3] = {
145 0x27, /* TEMP 1 in DataSheet */
146 0x39, /* TEMP 1 Over in DataSheet */
147 0x3A, /* TEMP 1 Hyst in DataSheet */
148};
149
150static const u8 W83791D_REG_TEMP_ADD[2][6] = {
151 {0xC0, /* TEMP 2 in DataSheet */
152 0xC1, /* TEMP 2(0.5 deg) in DataSheet */
153 0xC5, /* TEMP 2 Over High part in DataSheet */
154 0xC6, /* TEMP 2 Over Low part in DataSheet */
155 0xC3, /* TEMP 2 Thyst High part in DataSheet */
156 0xC4}, /* TEMP 2 Thyst Low part in DataSheet */
157 {0xC8, /* TEMP 3 in DataSheet */
158 0xC9, /* TEMP 3(0.5 deg) in DataSheet */
159 0xCD, /* TEMP 3 Over High part in DataSheet */
160 0xCE, /* TEMP 3 Over Low part in DataSheet */
161 0xCB, /* TEMP 3 Thyst High part in DataSheet */
162 0xCC} /* TEMP 3 Thyst Low part in DataSheet */
163};
164
165#define W83791D_REG_BEEP_CONFIG 0x4D
166
167static const u8 W83791D_REG_BEEP_CTRL[3] = {
168 0x56, /* BEEP Control Register 1 */
169 0x57, /* BEEP Control Register 2 */
170 0xA3, /* BEEP Control Register 3 */
171};
172
173#define W83791D_REG_GPIO 0x15
174#define W83791D_REG_CONFIG 0x40
175#define W83791D_REG_VID_FANDIV 0x47
176#define W83791D_REG_DID_VID4 0x49
177#define W83791D_REG_WCHIPID 0x58
178#define W83791D_REG_CHIPMAN 0x4F
179#define W83791D_REG_PIN 0x4B
180#define W83791D_REG_I2C_SUBADDR 0x4A
181
182#define W83791D_REG_ALARM1 0xA9 /* realtime status register1 */
183#define W83791D_REG_ALARM2 0xAA /* realtime status register2 */
184#define W83791D_REG_ALARM3 0xAB /* realtime status register3 */
185
186#define W83791D_REG_VBAT 0x5D
187#define W83791D_REG_I2C_ADDR 0x48
188
189/*
190 * The SMBus locks itself. The Winbond W83791D has a bank select register
191 * (index 0x4e), but the driver only accesses registers in bank 0. Since
192 * we don't switch banks, we don't need any special code to handle
193 * locking access between bank switches
194 */
195static inline int w83791d_read(struct i2c_client *client, u8 reg)
196{
197 return i2c_smbus_read_byte_data(client, reg);
198}
199
200static inline int w83791d_write(struct i2c_client *client, u8 reg, u8 value)
201{
202 return i2c_smbus_write_byte_data(client, reg, value);
203}
204
205/*
206 * The analog voltage inputs have 16mV LSB. Since the sysfs output is
207 * in mV as would be measured on the chip input pin, need to just
208 * multiply/divide by 16 to translate from/to register values.
209 */
210#define IN_TO_REG(val) (clamp_val((((val) + 8) / 16), 0, 255))
211#define IN_FROM_REG(val) ((val) * 16)
212
213static u8 fan_to_reg(long rpm, int div)
214{
215 if (rpm == 0)
216 return 255;
217 rpm = clamp_val(rpm, 1, 1000000);
218 return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
219}
220
221#define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : \
222 ((val) == 255 ? 0 : \
223 1350000 / ((val) * (div))))
224
225/* for temp1 which is 8-bit resolution, LSB = 1 degree Celsius */
226#define TEMP1_FROM_REG(val) ((val) * 1000)
227#define TEMP1_TO_REG(val) ((val) <= -128000 ? -128 : \
228 (val) >= 127000 ? 127 : \
229 (val) < 0 ? ((val) - 500) / 1000 : \
230 ((val) + 500) / 1000)
231
232/*
233 * for temp2 and temp3 which are 9-bit resolution, LSB = 0.5 degree Celsius
234 * Assumes the top 8 bits are the integral amount and the bottom 8 bits
235 * are the fractional amount. Since we only have 0.5 degree resolution,
236 * the bottom 7 bits will always be zero
237 */
238#define TEMP23_FROM_REG(val) ((val) / 128 * 500)
239#define TEMP23_TO_REG(val) (DIV_ROUND_CLOSEST(clamp_val((val), -128000, \
240 127500), 500) * 128)
241
242/* for thermal cruise target temp, 7-bits, LSB = 1 degree Celsius */
243#define TARGET_TEMP_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val((val), 0, 127000), \
244 1000)
245
246/* for thermal cruise temp tolerance, 4-bits, LSB = 1 degree Celsius */
247#define TOL_TEMP_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val((val), 0, 15000), \
248 1000)
249
250#define BEEP_MASK_TO_REG(val) ((val) & 0xffffff)
251#define BEEP_MASK_FROM_REG(val) ((val) & 0xffffff)
252
253#define DIV_FROM_REG(val) (1 << (val))
254
255static u8 div_to_reg(int nr, long val)
256{
257 int i;
258
259 /* fan divisors max out at 128 */
260 val = clamp_val(val, 1, 128) >> 1;
261 for (i = 0; i < 7; i++) {
262 if (val == 0)
263 break;
264 val >>= 1;
265 }
266 return (u8) i;
267}
268
269struct w83791d_data {
270 struct device *hwmon_dev;
271 struct mutex update_lock;
272
273 char valid; /* !=0 if following fields are valid */
274 unsigned long last_updated; /* In jiffies */
275
276 /* array of 2 pointers to subclients */
277 struct i2c_client *lm75[2];
278
279 /* volts */
280 u8 in[NUMBER_OF_VIN]; /* Register value */
281 u8 in_max[NUMBER_OF_VIN]; /* Register value */
282 u8 in_min[NUMBER_OF_VIN]; /* Register value */
283
284 /* fans */
285 u8 fan[NUMBER_OF_FANIN]; /* Register value */
286 u8 fan_min[NUMBER_OF_FANIN]; /* Register value */
287 u8 fan_div[NUMBER_OF_FANIN]; /* Register encoding, shifted right */
288
289 /* Temperature sensors */
290
291 s8 temp1[3]; /* current, over, thyst */
292 s16 temp_add[2][3]; /* fixed point value. Top 8 bits are the
293 * integral part, bottom 8 bits are the
294 * fractional part. We only use the top
295 * 9 bits as the resolution is only
296 * to the 0.5 degree C...
297 * two sensors with three values
298 * (cur, over, hyst)
299 */
300
301 /* PWMs */
302 u8 pwm[5]; /* pwm duty cycle */
303 u8 pwm_enable[3]; /* pwm enable status for fan 1-3
304 * (fan 4-5 only support manual mode)
305 */
306
307 u8 temp_target[3]; /* pwm 1-3 target temperature */
308 u8 temp_tolerance[3]; /* pwm 1-3 temperature tolerance */
309
310 /* Misc */
311 u32 alarms; /* realtime status register encoding,combined */
312 u8 beep_enable; /* Global beep enable */
313 u32 beep_mask; /* Mask off specific beeps */
314 u8 vid; /* Register encoding, combined */
315 u8 vrm; /* hwmon-vid */
316};
317
318static int w83791d_probe(struct i2c_client *client,
319 const struct i2c_device_id *id);
320static int w83791d_detect(struct i2c_client *client,
321 struct i2c_board_info *info);
322static int w83791d_remove(struct i2c_client *client);
323
324static int w83791d_read(struct i2c_client *client, u8 reg);
325static int w83791d_write(struct i2c_client *client, u8 reg, u8 value);
326static struct w83791d_data *w83791d_update_device(struct device *dev);
327
328#ifdef DEBUG
329static void w83791d_print_debug(struct w83791d_data *data, struct device *dev);
330#endif
331
332static void w83791d_init_client(struct i2c_client *client);
333
334static const struct i2c_device_id w83791d_id[] = {
335 { "w83791d", 0 },
336 { }
337};
338MODULE_DEVICE_TABLE(i2c, w83791d_id);
339
340static struct i2c_driver w83791d_driver = {
341 .class = I2C_CLASS_HWMON,
342 .driver = {
343 .name = "w83791d",
344 },
345 .probe = w83791d_probe,
346 .remove = w83791d_remove,
347 .id_table = w83791d_id,
348 .detect = w83791d_detect,
349 .address_list = normal_i2c,
350};
351
352/* following are the sysfs callback functions */
353#define show_in_reg(reg) \
354static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
355 char *buf) \
356{ \
357 struct sensor_device_attribute *sensor_attr = \
358 to_sensor_dev_attr(attr); \
359 struct w83791d_data *data = w83791d_update_device(dev); \
360 int nr = sensor_attr->index; \
361 return sprintf(buf, "%d\n", IN_FROM_REG(data->reg[nr])); \
362}
363
364show_in_reg(in);
365show_in_reg(in_min);
366show_in_reg(in_max);
367
368#define store_in_reg(REG, reg) \
369static ssize_t store_in_##reg(struct device *dev, \
370 struct device_attribute *attr, \
371 const char *buf, size_t count) \
372{ \
373 struct sensor_device_attribute *sensor_attr = \
374 to_sensor_dev_attr(attr); \
375 struct i2c_client *client = to_i2c_client(dev); \
376 struct w83791d_data *data = i2c_get_clientdata(client); \
377 int nr = sensor_attr->index; \
378 unsigned long val; \
379 int err = kstrtoul(buf, 10, &val); \
380 if (err) \
381 return err; \
382 mutex_lock(&data->update_lock); \
383 data->in_##reg[nr] = IN_TO_REG(val); \
384 w83791d_write(client, W83791D_REG_IN_##REG[nr], data->in_##reg[nr]); \
385 mutex_unlock(&data->update_lock); \
386 \
387 return count; \
388}
389store_in_reg(MIN, min);
390store_in_reg(MAX, max);
391
392static struct sensor_device_attribute sda_in_input[] = {
393 SENSOR_ATTR(in0_input, S_IRUGO, show_in, NULL, 0),
394 SENSOR_ATTR(in1_input, S_IRUGO, show_in, NULL, 1),
395 SENSOR_ATTR(in2_input, S_IRUGO, show_in, NULL, 2),
396 SENSOR_ATTR(in3_input, S_IRUGO, show_in, NULL, 3),
397 SENSOR_ATTR(in4_input, S_IRUGO, show_in, NULL, 4),
398 SENSOR_ATTR(in5_input, S_IRUGO, show_in, NULL, 5),
399 SENSOR_ATTR(in6_input, S_IRUGO, show_in, NULL, 6),
400 SENSOR_ATTR(in7_input, S_IRUGO, show_in, NULL, 7),
401 SENSOR_ATTR(in8_input, S_IRUGO, show_in, NULL, 8),
402 SENSOR_ATTR(in9_input, S_IRUGO, show_in, NULL, 9),
403};
404
405static struct sensor_device_attribute sda_in_min[] = {
406 SENSOR_ATTR(in0_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 0),
407 SENSOR_ATTR(in1_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 1),
408 SENSOR_ATTR(in2_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 2),
409 SENSOR_ATTR(in3_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 3),
410 SENSOR_ATTR(in4_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 4),
411 SENSOR_ATTR(in5_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 5),
412 SENSOR_ATTR(in6_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 6),
413 SENSOR_ATTR(in7_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 7),
414 SENSOR_ATTR(in8_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 8),
415 SENSOR_ATTR(in9_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 9),
416};
417
418static struct sensor_device_attribute sda_in_max[] = {
419 SENSOR_ATTR(in0_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 0),
420 SENSOR_ATTR(in1_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 1),
421 SENSOR_ATTR(in2_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 2),
422 SENSOR_ATTR(in3_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 3),
423 SENSOR_ATTR(in4_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 4),
424 SENSOR_ATTR(in5_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 5),
425 SENSOR_ATTR(in6_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 6),
426 SENSOR_ATTR(in7_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 7),
427 SENSOR_ATTR(in8_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 8),
428 SENSOR_ATTR(in9_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 9),
429};
430
431
432static ssize_t show_beep(struct device *dev, struct device_attribute *attr,
433 char *buf)
434{
435 struct sensor_device_attribute *sensor_attr =
436 to_sensor_dev_attr(attr);
437 struct w83791d_data *data = w83791d_update_device(dev);
438 int bitnr = sensor_attr->index;
439
440 return sprintf(buf, "%d\n", (data->beep_mask >> bitnr) & 1);
441}
442
443static ssize_t store_beep(struct device *dev, struct device_attribute *attr,
444 const char *buf, size_t count)
445{
446 struct sensor_device_attribute *sensor_attr =
447 to_sensor_dev_attr(attr);
448 struct i2c_client *client = to_i2c_client(dev);
449 struct w83791d_data *data = i2c_get_clientdata(client);
450 int bitnr = sensor_attr->index;
451 int bytenr = bitnr / 8;
452 unsigned long val;
453 int err;
454
455 err = kstrtoul(buf, 10, &val);
456 if (err)
457 return err;
458
459 val = val ? 1 : 0;
460
461 mutex_lock(&data->update_lock);
462
463 data->beep_mask &= ~(0xff << (bytenr * 8));
464 data->beep_mask |= w83791d_read(client, W83791D_REG_BEEP_CTRL[bytenr])
465 << (bytenr * 8);
466
467 data->beep_mask &= ~(1 << bitnr);
468 data->beep_mask |= val << bitnr;
469
470 w83791d_write(client, W83791D_REG_BEEP_CTRL[bytenr],
471 (data->beep_mask >> (bytenr * 8)) & 0xff);
472
473 mutex_unlock(&data->update_lock);
474
475 return count;
476}
477
478static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
479 char *buf)
480{
481 struct sensor_device_attribute *sensor_attr =
482 to_sensor_dev_attr(attr);
483 struct w83791d_data *data = w83791d_update_device(dev);
484 int bitnr = sensor_attr->index;
485
486 return sprintf(buf, "%d\n", (data->alarms >> bitnr) & 1);
487}
488
489/*
490 * Note: The bitmask for the beep enable/disable is different than
491 * the bitmask for the alarm.
492 */
493static struct sensor_device_attribute sda_in_beep[] = {
494 SENSOR_ATTR(in0_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 0),
495 SENSOR_ATTR(in1_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 13),
496 SENSOR_ATTR(in2_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 2),
497 SENSOR_ATTR(in3_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 3),
498 SENSOR_ATTR(in4_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 8),
499 SENSOR_ATTR(in5_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 9),
500 SENSOR_ATTR(in6_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 10),
501 SENSOR_ATTR(in7_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 16),
502 SENSOR_ATTR(in8_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 17),
503 SENSOR_ATTR(in9_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 14),
504};
505
506static struct sensor_device_attribute sda_in_alarm[] = {
507 SENSOR_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0),
508 SENSOR_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1),
509 SENSOR_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2),
510 SENSOR_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3),
511 SENSOR_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8),
512 SENSOR_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 9),
513 SENSOR_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 10),
514 SENSOR_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 19),
515 SENSOR_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 20),
516 SENSOR_ATTR(in9_alarm, S_IRUGO, show_alarm, NULL, 14),
517};
518
519#define show_fan_reg(reg) \
520static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
521 char *buf) \
522{ \
523 struct sensor_device_attribute *sensor_attr = \
524 to_sensor_dev_attr(attr); \
525 struct w83791d_data *data = w83791d_update_device(dev); \
526 int nr = sensor_attr->index; \
527 return sprintf(buf, "%d\n", \
528 FAN_FROM_REG(data->reg[nr], DIV_FROM_REG(data->fan_div[nr]))); \
529}
530
531show_fan_reg(fan);
532show_fan_reg(fan_min);
533
534static ssize_t store_fan_min(struct device *dev, struct device_attribute *attr,
535 const char *buf, size_t count)
536{
537 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
538 struct i2c_client *client = to_i2c_client(dev);
539 struct w83791d_data *data = i2c_get_clientdata(client);
540 int nr = sensor_attr->index;
541 unsigned long val;
542 int err;
543
544 err = kstrtoul(buf, 10, &val);
545 if (err)
546 return err;
547
548 mutex_lock(&data->update_lock);
549 data->fan_min[nr] = fan_to_reg(val, DIV_FROM_REG(data->fan_div[nr]));
550 w83791d_write(client, W83791D_REG_FAN_MIN[nr], data->fan_min[nr]);
551 mutex_unlock(&data->update_lock);
552
553 return count;
554}
555
556static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
557 char *buf)
558{
559 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
560 int nr = sensor_attr->index;
561 struct w83791d_data *data = w83791d_update_device(dev);
562 return sprintf(buf, "%u\n", DIV_FROM_REG(data->fan_div[nr]));
563}
564
565/*
566 * Note: we save and restore the fan minimum here, because its value is
567 * determined in part by the fan divisor. This follows the principle of
568 * least surprise; the user doesn't expect the fan minimum to change just
569 * because the divisor changed.
570 */
571static ssize_t store_fan_div(struct device *dev, struct device_attribute *attr,
572 const char *buf, size_t count)
573{
574 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
575 struct i2c_client *client = to_i2c_client(dev);
576 struct w83791d_data *data = i2c_get_clientdata(client);
577 int nr = sensor_attr->index;
578 unsigned long min;
579 u8 tmp_fan_div;
580 u8 fan_div_reg;
581 u8 vbat_reg;
582 int indx = 0;
583 u8 keep_mask = 0;
584 u8 new_shift = 0;
585 unsigned long val;
586 int err;
587
588 err = kstrtoul(buf, 10, &val);
589 if (err)
590 return err;
591
592 /* Save fan_min */
593 min = FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr]));
594
595 mutex_lock(&data->update_lock);
596 data->fan_div[nr] = div_to_reg(nr, val);
597
598 switch (nr) {
599 case 0:
600 indx = 0;
601 keep_mask = 0xcf;
602 new_shift = 4;
603 break;
604 case 1:
605 indx = 0;
606 keep_mask = 0x3f;
607 new_shift = 6;
608 break;
609 case 2:
610 indx = 1;
611 keep_mask = 0x3f;
612 new_shift = 6;
613 break;
614 case 3:
615 indx = 2;
616 keep_mask = 0xf8;
617 new_shift = 0;
618 break;
619 case 4:
620 indx = 2;
621 keep_mask = 0x8f;
622 new_shift = 4;
623 break;
624#ifdef DEBUG
625 default:
626 dev_warn(dev, "store_fan_div: Unexpected nr seen: %d\n", nr);
627 count = -EINVAL;
628 goto err_exit;
629#endif
630 }
631
632 fan_div_reg = w83791d_read(client, W83791D_REG_FAN_DIV[indx])
633 & keep_mask;
634 tmp_fan_div = (data->fan_div[nr] << new_shift) & ~keep_mask;
635
636 w83791d_write(client, W83791D_REG_FAN_DIV[indx],
637 fan_div_reg | tmp_fan_div);
638
639 /* Bit 2 of fans 0-2 is stored in the vbat register (bits 5-7) */
640 if (nr < 3) {
641 keep_mask = ~(1 << (nr + 5));
642 vbat_reg = w83791d_read(client, W83791D_REG_VBAT)
643 & keep_mask;
644 tmp_fan_div = (data->fan_div[nr] << (3 + nr)) & ~keep_mask;
645 w83791d_write(client, W83791D_REG_VBAT,
646 vbat_reg | tmp_fan_div);
647 }
648
649 /* Restore fan_min */
650 data->fan_min[nr] = fan_to_reg(min, DIV_FROM_REG(data->fan_div[nr]));
651 w83791d_write(client, W83791D_REG_FAN_MIN[nr], data->fan_min[nr]);
652
653#ifdef DEBUG
654err_exit:
655#endif
656 mutex_unlock(&data->update_lock);
657
658 return count;
659}
660
661static struct sensor_device_attribute sda_fan_input[] = {
662 SENSOR_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0),
663 SENSOR_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1),
664 SENSOR_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2),
665 SENSOR_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3),
666 SENSOR_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 4),
667};
668
669static struct sensor_device_attribute sda_fan_min[] = {
670 SENSOR_ATTR(fan1_min, S_IWUSR | S_IRUGO,
671 show_fan_min, store_fan_min, 0),
672 SENSOR_ATTR(fan2_min, S_IWUSR | S_IRUGO,
673 show_fan_min, store_fan_min, 1),
674 SENSOR_ATTR(fan3_min, S_IWUSR | S_IRUGO,
675 show_fan_min, store_fan_min, 2),
676 SENSOR_ATTR(fan4_min, S_IWUSR | S_IRUGO,
677 show_fan_min, store_fan_min, 3),
678 SENSOR_ATTR(fan5_min, S_IWUSR | S_IRUGO,
679 show_fan_min, store_fan_min, 4),
680};
681
682static struct sensor_device_attribute sda_fan_div[] = {
683 SENSOR_ATTR(fan1_div, S_IWUSR | S_IRUGO,
684 show_fan_div, store_fan_div, 0),
685 SENSOR_ATTR(fan2_div, S_IWUSR | S_IRUGO,
686 show_fan_div, store_fan_div, 1),
687 SENSOR_ATTR(fan3_div, S_IWUSR | S_IRUGO,
688 show_fan_div, store_fan_div, 2),
689 SENSOR_ATTR(fan4_div, S_IWUSR | S_IRUGO,
690 show_fan_div, store_fan_div, 3),
691 SENSOR_ATTR(fan5_div, S_IWUSR | S_IRUGO,
692 show_fan_div, store_fan_div, 4),
693};
694
695static struct sensor_device_attribute sda_fan_beep[] = {
696 SENSOR_ATTR(fan1_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 6),
697 SENSOR_ATTR(fan2_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 7),
698 SENSOR_ATTR(fan3_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 11),
699 SENSOR_ATTR(fan4_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 21),
700 SENSOR_ATTR(fan5_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 22),
701};
702
703static struct sensor_device_attribute sda_fan_alarm[] = {
704 SENSOR_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6),
705 SENSOR_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7),
706 SENSOR_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 11),
707 SENSOR_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 21),
708 SENSOR_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 22),
709};
710
711/* read/write PWMs */
712static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
713 char *buf)
714{
715 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
716 int nr = sensor_attr->index;
717 struct w83791d_data *data = w83791d_update_device(dev);
718 return sprintf(buf, "%u\n", data->pwm[nr]);
719}
720
721static ssize_t store_pwm(struct device *dev, struct device_attribute *attr,
722 const char *buf, size_t count)
723{
724 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
725 struct i2c_client *client = to_i2c_client(dev);
726 struct w83791d_data *data = i2c_get_clientdata(client);
727 int nr = sensor_attr->index;
728 unsigned long val;
729
730 if (kstrtoul(buf, 10, &val))
731 return -EINVAL;
732
733 mutex_lock(&data->update_lock);
734 data->pwm[nr] = clamp_val(val, 0, 255);
735 w83791d_write(client, W83791D_REG_PWM[nr], data->pwm[nr]);
736 mutex_unlock(&data->update_lock);
737 return count;
738}
739
740static struct sensor_device_attribute sda_pwm[] = {
741 SENSOR_ATTR(pwm1, S_IWUSR | S_IRUGO,
742 show_pwm, store_pwm, 0),
743 SENSOR_ATTR(pwm2, S_IWUSR | S_IRUGO,
744 show_pwm, store_pwm, 1),
745 SENSOR_ATTR(pwm3, S_IWUSR | S_IRUGO,
746 show_pwm, store_pwm, 2),
747 SENSOR_ATTR(pwm4, S_IWUSR | S_IRUGO,
748 show_pwm, store_pwm, 3),
749 SENSOR_ATTR(pwm5, S_IWUSR | S_IRUGO,
750 show_pwm, store_pwm, 4),
751};
752
753static ssize_t show_pwmenable(struct device *dev, struct device_attribute *attr,
754 char *buf)
755{
756 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
757 int nr = sensor_attr->index;
758 struct w83791d_data *data = w83791d_update_device(dev);
759 return sprintf(buf, "%u\n", data->pwm_enable[nr] + 1);
760}
761
762static ssize_t store_pwmenable(struct device *dev,
763 struct device_attribute *attr, const char *buf, size_t count)
764{
765 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
766 struct i2c_client *client = to_i2c_client(dev);
767 struct w83791d_data *data = i2c_get_clientdata(client);
768 int nr = sensor_attr->index;
769 unsigned long val;
770 u8 reg_cfg_tmp;
771 u8 reg_idx = 0;
772 u8 val_shift = 0;
773 u8 keep_mask = 0;
774
775 int ret = kstrtoul(buf, 10, &val);
776
777 if (ret || val < 1 || val > 3)
778 return -EINVAL;
779
780 mutex_lock(&data->update_lock);
781 data->pwm_enable[nr] = val - 1;
782 switch (nr) {
783 case 0:
784 reg_idx = 0;
785 val_shift = 2;
786 keep_mask = 0xf3;
787 break;
788 case 1:
789 reg_idx = 0;
790 val_shift = 4;
791 keep_mask = 0xcf;
792 break;
793 case 2:
794 reg_idx = 1;
795 val_shift = 2;
796 keep_mask = 0xf3;
797 break;
798 }
799
800 reg_cfg_tmp = w83791d_read(client, W83791D_REG_FAN_CFG[reg_idx]);
801 reg_cfg_tmp = (reg_cfg_tmp & keep_mask) |
802 data->pwm_enable[nr] << val_shift;
803
804 w83791d_write(client, W83791D_REG_FAN_CFG[reg_idx], reg_cfg_tmp);
805 mutex_unlock(&data->update_lock);
806
807 return count;
808}
809static struct sensor_device_attribute sda_pwmenable[] = {
810 SENSOR_ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
811 show_pwmenable, store_pwmenable, 0),
812 SENSOR_ATTR(pwm2_enable, S_IWUSR | S_IRUGO,
813 show_pwmenable, store_pwmenable, 1),
814 SENSOR_ATTR(pwm3_enable, S_IWUSR | S_IRUGO,
815 show_pwmenable, store_pwmenable, 2),
816};
817
818/* For Smart Fan I / Thermal Cruise */
819static ssize_t show_temp_target(struct device *dev,
820 struct device_attribute *attr, char *buf)
821{
822 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
823 struct w83791d_data *data = w83791d_update_device(dev);
824 int nr = sensor_attr->index;
825 return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp_target[nr]));
826}
827
828static ssize_t store_temp_target(struct device *dev,
829 struct device_attribute *attr, const char *buf, size_t count)
830{
831 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
832 struct i2c_client *client = to_i2c_client(dev);
833 struct w83791d_data *data = i2c_get_clientdata(client);
834 int nr = sensor_attr->index;
835 long val;
836 u8 target_mask;
837
838 if (kstrtol(buf, 10, &val))
839 return -EINVAL;
840
841 mutex_lock(&data->update_lock);
842 data->temp_target[nr] = TARGET_TEMP_TO_REG(val);
843 target_mask = w83791d_read(client,
844 W83791D_REG_TEMP_TARGET[nr]) & 0x80;
845 w83791d_write(client, W83791D_REG_TEMP_TARGET[nr],
846 data->temp_target[nr] | target_mask);
847 mutex_unlock(&data->update_lock);
848 return count;
849}
850
851static struct sensor_device_attribute sda_temp_target[] = {
852 SENSOR_ATTR(temp1_target, S_IWUSR | S_IRUGO,
853 show_temp_target, store_temp_target, 0),
854 SENSOR_ATTR(temp2_target, S_IWUSR | S_IRUGO,
855 show_temp_target, store_temp_target, 1),
856 SENSOR_ATTR(temp3_target, S_IWUSR | S_IRUGO,
857 show_temp_target, store_temp_target, 2),
858};
859
860static ssize_t show_temp_tolerance(struct device *dev,
861 struct device_attribute *attr, char *buf)
862{
863 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
864 struct w83791d_data *data = w83791d_update_device(dev);
865 int nr = sensor_attr->index;
866 return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp_tolerance[nr]));
867}
868
869static ssize_t store_temp_tolerance(struct device *dev,
870 struct device_attribute *attr, const char *buf, size_t count)
871{
872 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
873 struct i2c_client *client = to_i2c_client(dev);
874 struct w83791d_data *data = i2c_get_clientdata(client);
875 int nr = sensor_attr->index;
876 unsigned long val;
877 u8 target_mask;
878 u8 reg_idx = 0;
879 u8 val_shift = 0;
880 u8 keep_mask = 0;
881
882 if (kstrtoul(buf, 10, &val))
883 return -EINVAL;
884
885 switch (nr) {
886 case 0:
887 reg_idx = 0;
888 val_shift = 0;
889 keep_mask = 0xf0;
890 break;
891 case 1:
892 reg_idx = 0;
893 val_shift = 4;
894 keep_mask = 0x0f;
895 break;
896 case 2:
897 reg_idx = 1;
898 val_shift = 0;
899 keep_mask = 0xf0;
900 break;
901 }
902
903 mutex_lock(&data->update_lock);
904 data->temp_tolerance[nr] = TOL_TEMP_TO_REG(val);
905 target_mask = w83791d_read(client,
906 W83791D_REG_TEMP_TOL[reg_idx]) & keep_mask;
907 w83791d_write(client, W83791D_REG_TEMP_TOL[reg_idx],
908 (data->temp_tolerance[nr] << val_shift) | target_mask);
909 mutex_unlock(&data->update_lock);
910 return count;
911}
912
913static struct sensor_device_attribute sda_temp_tolerance[] = {
914 SENSOR_ATTR(temp1_tolerance, S_IWUSR | S_IRUGO,
915 show_temp_tolerance, store_temp_tolerance, 0),
916 SENSOR_ATTR(temp2_tolerance, S_IWUSR | S_IRUGO,
917 show_temp_tolerance, store_temp_tolerance, 1),
918 SENSOR_ATTR(temp3_tolerance, S_IWUSR | S_IRUGO,
919 show_temp_tolerance, store_temp_tolerance, 2),
920};
921
922/* read/write the temperature1, includes measured value and limits */
923static ssize_t show_temp1(struct device *dev, struct device_attribute *devattr,
924 char *buf)
925{
926 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
927 struct w83791d_data *data = w83791d_update_device(dev);
928 return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp1[attr->index]));
929}
930
931static ssize_t store_temp1(struct device *dev, struct device_attribute *devattr,
932 const char *buf, size_t count)
933{
934 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
935 struct i2c_client *client = to_i2c_client(dev);
936 struct w83791d_data *data = i2c_get_clientdata(client);
937 int nr = attr->index;
938 long val;
939 int err;
940
941 err = kstrtol(buf, 10, &val);
942 if (err)
943 return err;
944
945 mutex_lock(&data->update_lock);
946 data->temp1[nr] = TEMP1_TO_REG(val);
947 w83791d_write(client, W83791D_REG_TEMP1[nr], data->temp1[nr]);
948 mutex_unlock(&data->update_lock);
949 return count;
950}
951
952/* read/write temperature2-3, includes measured value and limits */
953static ssize_t show_temp23(struct device *dev, struct device_attribute *devattr,
954 char *buf)
955{
956 struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
957 struct w83791d_data *data = w83791d_update_device(dev);
958 int nr = attr->nr;
959 int index = attr->index;
960 return sprintf(buf, "%d\n", TEMP23_FROM_REG(data->temp_add[nr][index]));
961}
962
963static ssize_t store_temp23(struct device *dev,
964 struct device_attribute *devattr,
965 const char *buf, size_t count)
966{
967 struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
968 struct i2c_client *client = to_i2c_client(dev);
969 struct w83791d_data *data = i2c_get_clientdata(client);
970 long val;
971 int err;
972 int nr = attr->nr;
973 int index = attr->index;
974
975 err = kstrtol(buf, 10, &val);
976 if (err)
977 return err;
978
979 mutex_lock(&data->update_lock);
980 data->temp_add[nr][index] = TEMP23_TO_REG(val);
981 w83791d_write(client, W83791D_REG_TEMP_ADD[nr][index * 2],
982 data->temp_add[nr][index] >> 8);
983 w83791d_write(client, W83791D_REG_TEMP_ADD[nr][index * 2 + 1],
984 data->temp_add[nr][index] & 0x80);
985 mutex_unlock(&data->update_lock);
986
987 return count;
988}
989
990static struct sensor_device_attribute_2 sda_temp_input[] = {
991 SENSOR_ATTR_2(temp1_input, S_IRUGO, show_temp1, NULL, 0, 0),
992 SENSOR_ATTR_2(temp2_input, S_IRUGO, show_temp23, NULL, 0, 0),
993 SENSOR_ATTR_2(temp3_input, S_IRUGO, show_temp23, NULL, 1, 0),
994};
995
996static struct sensor_device_attribute_2 sda_temp_max[] = {
997 SENSOR_ATTR_2(temp1_max, S_IRUGO | S_IWUSR,
998 show_temp1, store_temp1, 0, 1),
999 SENSOR_ATTR_2(temp2_max, S_IRUGO | S_IWUSR,
1000 show_temp23, store_temp23, 0, 1),
1001 SENSOR_ATTR_2(temp3_max, S_IRUGO | S_IWUSR,
1002 show_temp23, store_temp23, 1, 1),
1003};
1004
1005static struct sensor_device_attribute_2 sda_temp_max_hyst[] = {
1006 SENSOR_ATTR_2(temp1_max_hyst, S_IRUGO | S_IWUSR,
1007 show_temp1, store_temp1, 0, 2),
1008 SENSOR_ATTR_2(temp2_max_hyst, S_IRUGO | S_IWUSR,
1009 show_temp23, store_temp23, 0, 2),
1010 SENSOR_ATTR_2(temp3_max_hyst, S_IRUGO | S_IWUSR,
1011 show_temp23, store_temp23, 1, 2),
1012};
1013
1014/*
1015 * Note: The bitmask for the beep enable/disable is different than
1016 * the bitmask for the alarm.
1017 */
1018static struct sensor_device_attribute sda_temp_beep[] = {
1019 SENSOR_ATTR(temp1_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 4),
1020 SENSOR_ATTR(temp2_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 5),
1021 SENSOR_ATTR(temp3_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 1),
1022};
1023
1024static struct sensor_device_attribute sda_temp_alarm[] = {
1025 SENSOR_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4),
1026 SENSOR_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5),
1027 SENSOR_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 13),
1028};
1029
1030/* get realtime status of all sensors items: voltage, temp, fan */
1031static ssize_t alarms_show(struct device *dev, struct device_attribute *attr,
1032 char *buf)
1033{
1034 struct w83791d_data *data = w83791d_update_device(dev);
1035 return sprintf(buf, "%u\n", data->alarms);
1036}
1037
1038static DEVICE_ATTR_RO(alarms);
1039
1040/* Beep control */
1041
1042#define GLOBAL_BEEP_ENABLE_SHIFT 15
1043#define GLOBAL_BEEP_ENABLE_MASK (1 << GLOBAL_BEEP_ENABLE_SHIFT)
1044
1045static ssize_t show_beep_enable(struct device *dev,
1046 struct device_attribute *attr, char *buf)
1047{
1048 struct w83791d_data *data = w83791d_update_device(dev);
1049 return sprintf(buf, "%d\n", data->beep_enable);
1050}
1051
1052static ssize_t show_beep_mask(struct device *dev,
1053 struct device_attribute *attr, char *buf)
1054{
1055 struct w83791d_data *data = w83791d_update_device(dev);
1056 return sprintf(buf, "%d\n", BEEP_MASK_FROM_REG(data->beep_mask));
1057}
1058
1059
1060static ssize_t store_beep_mask(struct device *dev,
1061 struct device_attribute *attr,
1062 const char *buf, size_t count)
1063{
1064 struct i2c_client *client = to_i2c_client(dev);
1065 struct w83791d_data *data = i2c_get_clientdata(client);
1066 int i;
1067 long val;
1068 int err;
1069
1070 err = kstrtol(buf, 10, &val);
1071 if (err)
1072 return err;
1073
1074 mutex_lock(&data->update_lock);
1075
1076 /*
1077 * The beep_enable state overrides any enabling request from
1078 * the masks
1079 */
1080 data->beep_mask = BEEP_MASK_TO_REG(val) & ~GLOBAL_BEEP_ENABLE_MASK;
1081 data->beep_mask |= (data->beep_enable << GLOBAL_BEEP_ENABLE_SHIFT);
1082
1083 val = data->beep_mask;
1084
1085 for (i = 0; i < 3; i++) {
1086 w83791d_write(client, W83791D_REG_BEEP_CTRL[i], (val & 0xff));
1087 val >>= 8;
1088 }
1089
1090 mutex_unlock(&data->update_lock);
1091
1092 return count;
1093}
1094
1095static ssize_t store_beep_enable(struct device *dev,
1096 struct device_attribute *attr,
1097 const char *buf, size_t count)
1098{
1099 struct i2c_client *client = to_i2c_client(dev);
1100 struct w83791d_data *data = i2c_get_clientdata(client);
1101 long val;
1102 int err;
1103
1104 err = kstrtol(buf, 10, &val);
1105 if (err)
1106 return err;
1107
1108 mutex_lock(&data->update_lock);
1109
1110 data->beep_enable = val ? 1 : 0;
1111
1112 /* Keep the full mask value in sync with the current enable */
1113 data->beep_mask &= ~GLOBAL_BEEP_ENABLE_MASK;
1114 data->beep_mask |= (data->beep_enable << GLOBAL_BEEP_ENABLE_SHIFT);
1115
1116 /*
1117 * The global control is in the second beep control register
1118 * so only need to update that register
1119 */
1120 val = (data->beep_mask >> 8) & 0xff;
1121
1122 w83791d_write(client, W83791D_REG_BEEP_CTRL[1], val);
1123
1124 mutex_unlock(&data->update_lock);
1125
1126 return count;
1127}
1128
1129static struct sensor_device_attribute sda_beep_ctrl[] = {
1130 SENSOR_ATTR(beep_enable, S_IRUGO | S_IWUSR,
1131 show_beep_enable, store_beep_enable, 0),
1132 SENSOR_ATTR(beep_mask, S_IRUGO | S_IWUSR,
1133 show_beep_mask, store_beep_mask, 1)
1134};
1135
1136/* cpu voltage regulation information */
1137static ssize_t cpu0_vid_show(struct device *dev,
1138 struct device_attribute *attr, char *buf)
1139{
1140 struct w83791d_data *data = w83791d_update_device(dev);
1141 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
1142}
1143
1144static DEVICE_ATTR_RO(cpu0_vid);
1145
1146static ssize_t vrm_show(struct device *dev, struct device_attribute *attr,
1147 char *buf)
1148{
1149 struct w83791d_data *data = dev_get_drvdata(dev);
1150 return sprintf(buf, "%d\n", data->vrm);
1151}
1152
1153static ssize_t vrm_store(struct device *dev, struct device_attribute *attr,
1154 const char *buf, size_t count)
1155{
1156 struct w83791d_data *data = dev_get_drvdata(dev);
1157 unsigned long val;
1158 int err;
1159
1160 /*
1161 * No lock needed as vrm is internal to the driver
1162 * (not read from a chip register) and so is not
1163 * updated in w83791d_update_device()
1164 */
1165
1166 err = kstrtoul(buf, 10, &val);
1167 if (err)
1168 return err;
1169
1170 if (val > 255)
1171 return -EINVAL;
1172
1173 data->vrm = val;
1174 return count;
1175}
1176
1177static DEVICE_ATTR_RW(vrm);
1178
1179#define IN_UNIT_ATTRS(X) \
1180 &sda_in_input[X].dev_attr.attr, \
1181 &sda_in_min[X].dev_attr.attr, \
1182 &sda_in_max[X].dev_attr.attr, \
1183 &sda_in_beep[X].dev_attr.attr, \
1184 &sda_in_alarm[X].dev_attr.attr
1185
1186#define FAN_UNIT_ATTRS(X) \
1187 &sda_fan_input[X].dev_attr.attr, \
1188 &sda_fan_min[X].dev_attr.attr, \
1189 &sda_fan_div[X].dev_attr.attr, \
1190 &sda_fan_beep[X].dev_attr.attr, \
1191 &sda_fan_alarm[X].dev_attr.attr
1192
1193#define TEMP_UNIT_ATTRS(X) \
1194 &sda_temp_input[X].dev_attr.attr, \
1195 &sda_temp_max[X].dev_attr.attr, \
1196 &sda_temp_max_hyst[X].dev_attr.attr, \
1197 &sda_temp_beep[X].dev_attr.attr, \
1198 &sda_temp_alarm[X].dev_attr.attr
1199
1200static struct attribute *w83791d_attributes[] = {
1201 IN_UNIT_ATTRS(0),
1202 IN_UNIT_ATTRS(1),
1203 IN_UNIT_ATTRS(2),
1204 IN_UNIT_ATTRS(3),
1205 IN_UNIT_ATTRS(4),
1206 IN_UNIT_ATTRS(5),
1207 IN_UNIT_ATTRS(6),
1208 IN_UNIT_ATTRS(7),
1209 IN_UNIT_ATTRS(8),
1210 IN_UNIT_ATTRS(9),
1211 FAN_UNIT_ATTRS(0),
1212 FAN_UNIT_ATTRS(1),
1213 FAN_UNIT_ATTRS(2),
1214 TEMP_UNIT_ATTRS(0),
1215 TEMP_UNIT_ATTRS(1),
1216 TEMP_UNIT_ATTRS(2),
1217 &dev_attr_alarms.attr,
1218 &sda_beep_ctrl[0].dev_attr.attr,
1219 &sda_beep_ctrl[1].dev_attr.attr,
1220 &dev_attr_cpu0_vid.attr,
1221 &dev_attr_vrm.attr,
1222 &sda_pwm[0].dev_attr.attr,
1223 &sda_pwm[1].dev_attr.attr,
1224 &sda_pwm[2].dev_attr.attr,
1225 &sda_pwmenable[0].dev_attr.attr,
1226 &sda_pwmenable[1].dev_attr.attr,
1227 &sda_pwmenable[2].dev_attr.attr,
1228 &sda_temp_target[0].dev_attr.attr,
1229 &sda_temp_target[1].dev_attr.attr,
1230 &sda_temp_target[2].dev_attr.attr,
1231 &sda_temp_tolerance[0].dev_attr.attr,
1232 &sda_temp_tolerance[1].dev_attr.attr,
1233 &sda_temp_tolerance[2].dev_attr.attr,
1234 NULL
1235};
1236
1237static const struct attribute_group w83791d_group = {
1238 .attrs = w83791d_attributes,
1239};
1240
1241/*
1242 * Separate group of attributes for fan/pwm 4-5. Their pins can also be
1243 * in use for GPIO in which case their sysfs-interface should not be made
1244 * available
1245 */
1246static struct attribute *w83791d_attributes_fanpwm45[] = {
1247 FAN_UNIT_ATTRS(3),
1248 FAN_UNIT_ATTRS(4),
1249 &sda_pwm[3].dev_attr.attr,
1250 &sda_pwm[4].dev_attr.attr,
1251 NULL
1252};
1253
1254static const struct attribute_group w83791d_group_fanpwm45 = {
1255 .attrs = w83791d_attributes_fanpwm45,
1256};
1257
1258static int w83791d_detect_subclients(struct i2c_client *client)
1259{
1260 struct i2c_adapter *adapter = client->adapter;
1261 struct w83791d_data *data = i2c_get_clientdata(client);
1262 int address = client->addr;
1263 int i, id;
1264 u8 val;
1265
1266 id = i2c_adapter_id(adapter);
1267 if (force_subclients[0] == id && force_subclients[1] == address) {
1268 for (i = 2; i <= 3; i++) {
1269 if (force_subclients[i] < 0x48 ||
1270 force_subclients[i] > 0x4f) {
1271 dev_err(&client->dev,
1272 "invalid subclient "
1273 "address %d; must be 0x48-0x4f\n",
1274 force_subclients[i]);
1275 return -ENODEV;
1276 }
1277 }
1278 w83791d_write(client, W83791D_REG_I2C_SUBADDR,
1279 (force_subclients[2] & 0x07) |
1280 ((force_subclients[3] & 0x07) << 4));
1281 }
1282
1283 val = w83791d_read(client, W83791D_REG_I2C_SUBADDR);
1284 if (!(val & 0x08))
1285 data->lm75[0] = devm_i2c_new_dummy_device(&client->dev, adapter,
1286 0x48 + (val & 0x7));
1287 if (!(val & 0x80)) {
1288 if (!IS_ERR(data->lm75[0]) &&
1289 ((val & 0x7) == ((val >> 4) & 0x7))) {
1290 dev_err(&client->dev,
1291 "duplicate addresses 0x%x, "
1292 "use force_subclient\n",
1293 data->lm75[0]->addr);
1294 return -ENODEV;
1295 }
1296 data->lm75[1] = devm_i2c_new_dummy_device(&client->dev, adapter,
1297 0x48 + ((val >> 4) & 0x7));
1298 }
1299
1300 return 0;
1301}
1302
1303
1304/* Return 0 if detection is successful, -ENODEV otherwise */
1305static int w83791d_detect(struct i2c_client *client,
1306 struct i2c_board_info *info)
1307{
1308 struct i2c_adapter *adapter = client->adapter;
1309 int val1, val2;
1310 unsigned short address = client->addr;
1311
1312 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1313 return -ENODEV;
1314
1315 if (w83791d_read(client, W83791D_REG_CONFIG) & 0x80)
1316 return -ENODEV;
1317
1318 val1 = w83791d_read(client, W83791D_REG_BANK);
1319 val2 = w83791d_read(client, W83791D_REG_CHIPMAN);
1320 /* Check for Winbond ID if in bank 0 */
1321 if (!(val1 & 0x07)) {
1322 if ((!(val1 & 0x80) && val2 != 0xa3) ||
1323 ((val1 & 0x80) && val2 != 0x5c)) {
1324 return -ENODEV;
1325 }
1326 }
1327 /*
1328 * If Winbond chip, address of chip and W83791D_REG_I2C_ADDR
1329 * should match
1330 */
1331 if (w83791d_read(client, W83791D_REG_I2C_ADDR) != address)
1332 return -ENODEV;
1333
1334 /* We want bank 0 and Vendor ID high byte */
1335 val1 = w83791d_read(client, W83791D_REG_BANK) & 0x78;
1336 w83791d_write(client, W83791D_REG_BANK, val1 | 0x80);
1337
1338 /* Verify it is a Winbond w83791d */
1339 val1 = w83791d_read(client, W83791D_REG_WCHIPID);
1340 val2 = w83791d_read(client, W83791D_REG_CHIPMAN);
1341 if (val1 != 0x71 || val2 != 0x5c)
1342 return -ENODEV;
1343
1344 strlcpy(info->type, "w83791d", I2C_NAME_SIZE);
1345
1346 return 0;
1347}
1348
1349static int w83791d_probe(struct i2c_client *client,
1350 const struct i2c_device_id *id)
1351{
1352 struct w83791d_data *data;
1353 struct device *dev = &client->dev;
1354 int i, err;
1355 u8 has_fanpwm45;
1356
1357#ifdef DEBUG
1358 int val1;
1359 val1 = w83791d_read(client, W83791D_REG_DID_VID4);
1360 dev_dbg(dev, "Device ID version: %d.%d (0x%02x)\n",
1361 (val1 >> 5) & 0x07, (val1 >> 1) & 0x0f, val1);
1362#endif
1363
1364 data = devm_kzalloc(&client->dev, sizeof(struct w83791d_data),
1365 GFP_KERNEL);
1366 if (!data)
1367 return -ENOMEM;
1368
1369 i2c_set_clientdata(client, data);
1370 mutex_init(&data->update_lock);
1371
1372 err = w83791d_detect_subclients(client);
1373 if (err)
1374 return err;
1375
1376 /* Initialize the chip */
1377 w83791d_init_client(client);
1378
1379 /*
1380 * If the fan_div is changed, make sure there is a rational
1381 * fan_min in place
1382 */
1383 for (i = 0; i < NUMBER_OF_FANIN; i++)
1384 data->fan_min[i] = w83791d_read(client, W83791D_REG_FAN_MIN[i]);
1385
1386 /* Register sysfs hooks */
1387 err = sysfs_create_group(&client->dev.kobj, &w83791d_group);
1388 if (err)
1389 return err;
1390
1391 /* Check if pins of fan/pwm 4-5 are in use as GPIO */
1392 has_fanpwm45 = w83791d_read(client, W83791D_REG_GPIO) & 0x10;
1393 if (has_fanpwm45) {
1394 err = sysfs_create_group(&client->dev.kobj,
1395 &w83791d_group_fanpwm45);
1396 if (err)
1397 goto error4;
1398 }
1399
1400 /* Everything is ready, now register the working device */
1401 data->hwmon_dev = hwmon_device_register(dev);
1402 if (IS_ERR(data->hwmon_dev)) {
1403 err = PTR_ERR(data->hwmon_dev);
1404 goto error5;
1405 }
1406
1407 return 0;
1408
1409error5:
1410 if (has_fanpwm45)
1411 sysfs_remove_group(&client->dev.kobj, &w83791d_group_fanpwm45);
1412error4:
1413 sysfs_remove_group(&client->dev.kobj, &w83791d_group);
1414 return err;
1415}
1416
1417static int w83791d_remove(struct i2c_client *client)
1418{
1419 struct w83791d_data *data = i2c_get_clientdata(client);
1420
1421 hwmon_device_unregister(data->hwmon_dev);
1422 sysfs_remove_group(&client->dev.kobj, &w83791d_group);
1423
1424 return 0;
1425}
1426
1427static void w83791d_init_client(struct i2c_client *client)
1428{
1429 struct w83791d_data *data = i2c_get_clientdata(client);
1430 u8 tmp;
1431 u8 old_beep;
1432
1433 /*
1434 * The difference between reset and init is that reset
1435 * does a hard reset of the chip via index 0x40, bit 7,
1436 * but init simply forces certain registers to have "sane"
1437 * values. The hope is that the BIOS has done the right
1438 * thing (which is why the default is reset=0, init=0),
1439 * but if not, reset is the hard hammer and init
1440 * is the soft mallet both of which are trying to whack
1441 * things into place...
1442 * NOTE: The data sheet makes a distinction between
1443 * "power on defaults" and "reset by MR". As far as I can tell,
1444 * the hard reset puts everything into a power-on state so I'm
1445 * not sure what "reset by MR" means or how it can happen.
1446 */
1447 if (reset || init) {
1448 /* keep some BIOS settings when we... */
1449 old_beep = w83791d_read(client, W83791D_REG_BEEP_CONFIG);
1450
1451 if (reset) {
1452 /* ... reset the chip and ... */
1453 w83791d_write(client, W83791D_REG_CONFIG, 0x80);
1454 }
1455
1456 /* ... disable power-on abnormal beep */
1457 w83791d_write(client, W83791D_REG_BEEP_CONFIG, old_beep | 0x80);
1458
1459 /* disable the global beep (not done by hard reset) */
1460 tmp = w83791d_read(client, W83791D_REG_BEEP_CTRL[1]);
1461 w83791d_write(client, W83791D_REG_BEEP_CTRL[1], tmp & 0xef);
1462
1463 if (init) {
1464 /* Make sure monitoring is turned on for add-ons */
1465 tmp = w83791d_read(client, W83791D_REG_TEMP2_CONFIG);
1466 if (tmp & 1) {
1467 w83791d_write(client, W83791D_REG_TEMP2_CONFIG,
1468 tmp & 0xfe);
1469 }
1470
1471 tmp = w83791d_read(client, W83791D_REG_TEMP3_CONFIG);
1472 if (tmp & 1) {
1473 w83791d_write(client, W83791D_REG_TEMP3_CONFIG,
1474 tmp & 0xfe);
1475 }
1476
1477 /* Start monitoring */
1478 tmp = w83791d_read(client, W83791D_REG_CONFIG) & 0xf7;
1479 w83791d_write(client, W83791D_REG_CONFIG, tmp | 0x01);
1480 }
1481 }
1482
1483 data->vrm = vid_which_vrm();
1484}
1485
1486static struct w83791d_data *w83791d_update_device(struct device *dev)
1487{
1488 struct i2c_client *client = to_i2c_client(dev);
1489 struct w83791d_data *data = i2c_get_clientdata(client);
1490 int i, j;
1491 u8 reg_array_tmp[3];
1492 u8 vbat_reg;
1493
1494 mutex_lock(&data->update_lock);
1495
1496 if (time_after(jiffies, data->last_updated + (HZ * 3))
1497 || !data->valid) {
1498 dev_dbg(dev, "Starting w83791d device update\n");
1499
1500 /* Update the voltages measured value and limits */
1501 for (i = 0; i < NUMBER_OF_VIN; i++) {
1502 data->in[i] = w83791d_read(client,
1503 W83791D_REG_IN[i]);
1504 data->in_max[i] = w83791d_read(client,
1505 W83791D_REG_IN_MAX[i]);
1506 data->in_min[i] = w83791d_read(client,
1507 W83791D_REG_IN_MIN[i]);
1508 }
1509
1510 /* Update the fan counts and limits */
1511 for (i = 0; i < NUMBER_OF_FANIN; i++) {
1512 /* Update the Fan measured value and limits */
1513 data->fan[i] = w83791d_read(client,
1514 W83791D_REG_FAN[i]);
1515 data->fan_min[i] = w83791d_read(client,
1516 W83791D_REG_FAN_MIN[i]);
1517 }
1518
1519 /* Update the fan divisor */
1520 for (i = 0; i < 3; i++) {
1521 reg_array_tmp[i] = w83791d_read(client,
1522 W83791D_REG_FAN_DIV[i]);
1523 }
1524 data->fan_div[0] = (reg_array_tmp[0] >> 4) & 0x03;
1525 data->fan_div[1] = (reg_array_tmp[0] >> 6) & 0x03;
1526 data->fan_div[2] = (reg_array_tmp[1] >> 6) & 0x03;
1527 data->fan_div[3] = reg_array_tmp[2] & 0x07;
1528 data->fan_div[4] = (reg_array_tmp[2] >> 4) & 0x07;
1529
1530 /*
1531 * The fan divisor for fans 0-2 get bit 2 from
1532 * bits 5-7 respectively of vbat register
1533 */
1534 vbat_reg = w83791d_read(client, W83791D_REG_VBAT);
1535 for (i = 0; i < 3; i++)
1536 data->fan_div[i] |= (vbat_reg >> (3 + i)) & 0x04;
1537
1538 /* Update PWM duty cycle */
1539 for (i = 0; i < NUMBER_OF_PWM; i++) {
1540 data->pwm[i] = w83791d_read(client,
1541 W83791D_REG_PWM[i]);
1542 }
1543
1544 /* Update PWM enable status */
1545 for (i = 0; i < 2; i++) {
1546 reg_array_tmp[i] = w83791d_read(client,
1547 W83791D_REG_FAN_CFG[i]);
1548 }
1549 data->pwm_enable[0] = (reg_array_tmp[0] >> 2) & 0x03;
1550 data->pwm_enable[1] = (reg_array_tmp[0] >> 4) & 0x03;
1551 data->pwm_enable[2] = (reg_array_tmp[1] >> 2) & 0x03;
1552
1553 /* Update PWM target temperature */
1554 for (i = 0; i < 3; i++) {
1555 data->temp_target[i] = w83791d_read(client,
1556 W83791D_REG_TEMP_TARGET[i]) & 0x7f;
1557 }
1558
1559 /* Update PWM temperature tolerance */
1560 for (i = 0; i < 2; i++) {
1561 reg_array_tmp[i] = w83791d_read(client,
1562 W83791D_REG_TEMP_TOL[i]);
1563 }
1564 data->temp_tolerance[0] = reg_array_tmp[0] & 0x0f;
1565 data->temp_tolerance[1] = (reg_array_tmp[0] >> 4) & 0x0f;
1566 data->temp_tolerance[2] = reg_array_tmp[1] & 0x0f;
1567
1568 /* Update the first temperature sensor */
1569 for (i = 0; i < 3; i++) {
1570 data->temp1[i] = w83791d_read(client,
1571 W83791D_REG_TEMP1[i]);
1572 }
1573
1574 /* Update the rest of the temperature sensors */
1575 for (i = 0; i < 2; i++) {
1576 for (j = 0; j < 3; j++) {
1577 data->temp_add[i][j] =
1578 (w83791d_read(client,
1579 W83791D_REG_TEMP_ADD[i][j * 2]) << 8) |
1580 w83791d_read(client,
1581 W83791D_REG_TEMP_ADD[i][j * 2 + 1]);
1582 }
1583 }
1584
1585 /* Update the realtime status */
1586 data->alarms =
1587 w83791d_read(client, W83791D_REG_ALARM1) +
1588 (w83791d_read(client, W83791D_REG_ALARM2) << 8) +
1589 (w83791d_read(client, W83791D_REG_ALARM3) << 16);
1590
1591 /* Update the beep configuration information */
1592 data->beep_mask =
1593 w83791d_read(client, W83791D_REG_BEEP_CTRL[0]) +
1594 (w83791d_read(client, W83791D_REG_BEEP_CTRL[1]) << 8) +
1595 (w83791d_read(client, W83791D_REG_BEEP_CTRL[2]) << 16);
1596
1597 /* Extract global beep enable flag */
1598 data->beep_enable =
1599 (data->beep_mask >> GLOBAL_BEEP_ENABLE_SHIFT) & 0x01;
1600
1601 /* Update the cpu voltage information */
1602 i = w83791d_read(client, W83791D_REG_VID_FANDIV);
1603 data->vid = i & 0x0f;
1604 data->vid |= (w83791d_read(client, W83791D_REG_DID_VID4) & 0x01)
1605 << 4;
1606
1607 data->last_updated = jiffies;
1608 data->valid = 1;
1609 }
1610
1611 mutex_unlock(&data->update_lock);
1612
1613#ifdef DEBUG
1614 w83791d_print_debug(data, dev);
1615#endif
1616
1617 return data;
1618}
1619
1620#ifdef DEBUG
1621static void w83791d_print_debug(struct w83791d_data *data, struct device *dev)
1622{
1623 int i = 0, j = 0;
1624
1625 dev_dbg(dev, "======Start of w83791d debug values======\n");
1626 dev_dbg(dev, "%d set of Voltages: ===>\n", NUMBER_OF_VIN);
1627 for (i = 0; i < NUMBER_OF_VIN; i++) {
1628 dev_dbg(dev, "vin[%d] is: 0x%02x\n", i, data->in[i]);
1629 dev_dbg(dev, "vin[%d] min is: 0x%02x\n", i, data->in_min[i]);
1630 dev_dbg(dev, "vin[%d] max is: 0x%02x\n", i, data->in_max[i]);
1631 }
1632 dev_dbg(dev, "%d set of Fan Counts/Divisors: ===>\n", NUMBER_OF_FANIN);
1633 for (i = 0; i < NUMBER_OF_FANIN; i++) {
1634 dev_dbg(dev, "fan[%d] is: 0x%02x\n", i, data->fan[i]);
1635 dev_dbg(dev, "fan[%d] min is: 0x%02x\n", i, data->fan_min[i]);
1636 dev_dbg(dev, "fan_div[%d] is: 0x%02x\n", i, data->fan_div[i]);
1637 }
1638
1639 /*
1640 * temperature math is signed, but only print out the
1641 * bits that matter
1642 */
1643 dev_dbg(dev, "%d set of Temperatures: ===>\n", NUMBER_OF_TEMPIN);
1644 for (i = 0; i < 3; i++)
1645 dev_dbg(dev, "temp1[%d] is: 0x%02x\n", i, (u8) data->temp1[i]);
1646 for (i = 0; i < 2; i++) {
1647 for (j = 0; j < 3; j++) {
1648 dev_dbg(dev, "temp_add[%d][%d] is: 0x%04x\n", i, j,
1649 (u16) data->temp_add[i][j]);
1650 }
1651 }
1652
1653 dev_dbg(dev, "Misc Information: ===>\n");
1654 dev_dbg(dev, "alarm is: 0x%08x\n", data->alarms);
1655 dev_dbg(dev, "beep_mask is: 0x%08x\n", data->beep_mask);
1656 dev_dbg(dev, "beep_enable is: %d\n", data->beep_enable);
1657 dev_dbg(dev, "vid is: 0x%02x\n", data->vid);
1658 dev_dbg(dev, "vrm is: 0x%02x\n", data->vrm);
1659 dev_dbg(dev, "=======End of w83791d debug values========\n");
1660 dev_dbg(dev, "\n");
1661}
1662#endif
1663
1664module_i2c_driver(w83791d_driver);
1665
1666MODULE_AUTHOR("Charles Spirakis <bezaur@gmail.com>");
1667MODULE_DESCRIPTION("W83791D driver");
1668MODULE_LICENSE("GPL");
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 show_alarms_reg(struct device *dev,
1045 struct device_attribute *attr, 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(alarms, S_IRUGO, show_alarms_reg, NULL);
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 show_vid_reg(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(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
1158
1159static ssize_t show_vrm_reg(struct device *dev,
1160 struct device_attribute *attr, 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 store_vrm_reg(struct device *dev,
1167 struct device_attribute *attr,
1168 const char *buf, size_t count)
1169{
1170 struct w83791d_data *data = dev_get_drvdata(dev);
1171 unsigned long val;
1172 int err;
1173
1174 /*
1175 * No lock needed as vrm is internal to the driver
1176 * (not read from a chip register) and so is not
1177 * updated in w83791d_update_device()
1178 */
1179
1180 err = kstrtoul(buf, 10, &val);
1181 if (err)
1182 return err;
1183
1184 if (val > 255)
1185 return -EINVAL;
1186
1187 data->vrm = val;
1188 return count;
1189}
1190
1191static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
1192
1193#define IN_UNIT_ATTRS(X) \
1194 &sda_in_input[X].dev_attr.attr, \
1195 &sda_in_min[X].dev_attr.attr, \
1196 &sda_in_max[X].dev_attr.attr, \
1197 &sda_in_beep[X].dev_attr.attr, \
1198 &sda_in_alarm[X].dev_attr.attr
1199
1200#define FAN_UNIT_ATTRS(X) \
1201 &sda_fan_input[X].dev_attr.attr, \
1202 &sda_fan_min[X].dev_attr.attr, \
1203 &sda_fan_div[X].dev_attr.attr, \
1204 &sda_fan_beep[X].dev_attr.attr, \
1205 &sda_fan_alarm[X].dev_attr.attr
1206
1207#define TEMP_UNIT_ATTRS(X) \
1208 &sda_temp_input[X].dev_attr.attr, \
1209 &sda_temp_max[X].dev_attr.attr, \
1210 &sda_temp_max_hyst[X].dev_attr.attr, \
1211 &sda_temp_beep[X].dev_attr.attr, \
1212 &sda_temp_alarm[X].dev_attr.attr
1213
1214static struct attribute *w83791d_attributes[] = {
1215 IN_UNIT_ATTRS(0),
1216 IN_UNIT_ATTRS(1),
1217 IN_UNIT_ATTRS(2),
1218 IN_UNIT_ATTRS(3),
1219 IN_UNIT_ATTRS(4),
1220 IN_UNIT_ATTRS(5),
1221 IN_UNIT_ATTRS(6),
1222 IN_UNIT_ATTRS(7),
1223 IN_UNIT_ATTRS(8),
1224 IN_UNIT_ATTRS(9),
1225 FAN_UNIT_ATTRS(0),
1226 FAN_UNIT_ATTRS(1),
1227 FAN_UNIT_ATTRS(2),
1228 TEMP_UNIT_ATTRS(0),
1229 TEMP_UNIT_ATTRS(1),
1230 TEMP_UNIT_ATTRS(2),
1231 &dev_attr_alarms.attr,
1232 &sda_beep_ctrl[0].dev_attr.attr,
1233 &sda_beep_ctrl[1].dev_attr.attr,
1234 &dev_attr_cpu0_vid.attr,
1235 &dev_attr_vrm.attr,
1236 &sda_pwm[0].dev_attr.attr,
1237 &sda_pwm[1].dev_attr.attr,
1238 &sda_pwm[2].dev_attr.attr,
1239 &sda_pwmenable[0].dev_attr.attr,
1240 &sda_pwmenable[1].dev_attr.attr,
1241 &sda_pwmenable[2].dev_attr.attr,
1242 &sda_temp_target[0].dev_attr.attr,
1243 &sda_temp_target[1].dev_attr.attr,
1244 &sda_temp_target[2].dev_attr.attr,
1245 &sda_temp_tolerance[0].dev_attr.attr,
1246 &sda_temp_tolerance[1].dev_attr.attr,
1247 &sda_temp_tolerance[2].dev_attr.attr,
1248 NULL
1249};
1250
1251static const struct attribute_group w83791d_group = {
1252 .attrs = w83791d_attributes,
1253};
1254
1255/*
1256 * Separate group of attributes for fan/pwm 4-5. Their pins can also be
1257 * in use for GPIO in which case their sysfs-interface should not be made
1258 * available
1259 */
1260static struct attribute *w83791d_attributes_fanpwm45[] = {
1261 FAN_UNIT_ATTRS(3),
1262 FAN_UNIT_ATTRS(4),
1263 &sda_pwm[3].dev_attr.attr,
1264 &sda_pwm[4].dev_attr.attr,
1265 NULL
1266};
1267
1268static const struct attribute_group w83791d_group_fanpwm45 = {
1269 .attrs = w83791d_attributes_fanpwm45,
1270};
1271
1272static int w83791d_detect_subclients(struct i2c_client *client)
1273{
1274 struct i2c_adapter *adapter = client->adapter;
1275 struct w83791d_data *data = i2c_get_clientdata(client);
1276 int address = client->addr;
1277 int i, id, err;
1278 u8 val;
1279
1280 id = i2c_adapter_id(adapter);
1281 if (force_subclients[0] == id && force_subclients[1] == address) {
1282 for (i = 2; i <= 3; i++) {
1283 if (force_subclients[i] < 0x48 ||
1284 force_subclients[i] > 0x4f) {
1285 dev_err(&client->dev,
1286 "invalid subclient "
1287 "address %d; must be 0x48-0x4f\n",
1288 force_subclients[i]);
1289 err = -ENODEV;
1290 goto error_sc_0;
1291 }
1292 }
1293 w83791d_write(client, W83791D_REG_I2C_SUBADDR,
1294 (force_subclients[2] & 0x07) |
1295 ((force_subclients[3] & 0x07) << 4));
1296 }
1297
1298 val = w83791d_read(client, W83791D_REG_I2C_SUBADDR);
1299 if (!(val & 0x08))
1300 data->lm75[0] = i2c_new_dummy(adapter, 0x48 + (val & 0x7));
1301 if (!(val & 0x80)) {
1302 if ((data->lm75[0] != NULL) &&
1303 ((val & 0x7) == ((val >> 4) & 0x7))) {
1304 dev_err(&client->dev,
1305 "duplicate addresses 0x%x, "
1306 "use force_subclient\n",
1307 data->lm75[0]->addr);
1308 err = -ENODEV;
1309 goto error_sc_1;
1310 }
1311 data->lm75[1] = i2c_new_dummy(adapter,
1312 0x48 + ((val >> 4) & 0x7));
1313 }
1314
1315 return 0;
1316
1317/* Undo inits in case of errors */
1318
1319error_sc_1:
1320 if (data->lm75[0] != NULL)
1321 i2c_unregister_device(data->lm75[0]);
1322error_sc_0:
1323 return err;
1324}
1325
1326
1327/* Return 0 if detection is successful, -ENODEV otherwise */
1328static int w83791d_detect(struct i2c_client *client,
1329 struct i2c_board_info *info)
1330{
1331 struct i2c_adapter *adapter = client->adapter;
1332 int val1, val2;
1333 unsigned short address = client->addr;
1334
1335 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1336 return -ENODEV;
1337
1338 if (w83791d_read(client, W83791D_REG_CONFIG) & 0x80)
1339 return -ENODEV;
1340
1341 val1 = w83791d_read(client, W83791D_REG_BANK);
1342 val2 = w83791d_read(client, W83791D_REG_CHIPMAN);
1343 /* Check for Winbond ID if in bank 0 */
1344 if (!(val1 & 0x07)) {
1345 if ((!(val1 & 0x80) && val2 != 0xa3) ||
1346 ((val1 & 0x80) && val2 != 0x5c)) {
1347 return -ENODEV;
1348 }
1349 }
1350 /*
1351 * If Winbond chip, address of chip and W83791D_REG_I2C_ADDR
1352 * should match
1353 */
1354 if (w83791d_read(client, W83791D_REG_I2C_ADDR) != address)
1355 return -ENODEV;
1356
1357 /* We want bank 0 and Vendor ID high byte */
1358 val1 = w83791d_read(client, W83791D_REG_BANK) & 0x78;
1359 w83791d_write(client, W83791D_REG_BANK, val1 | 0x80);
1360
1361 /* Verify it is a Winbond w83791d */
1362 val1 = w83791d_read(client, W83791D_REG_WCHIPID);
1363 val2 = w83791d_read(client, W83791D_REG_CHIPMAN);
1364 if (val1 != 0x71 || val2 != 0x5c)
1365 return -ENODEV;
1366
1367 strlcpy(info->type, "w83791d", I2C_NAME_SIZE);
1368
1369 return 0;
1370}
1371
1372static int w83791d_probe(struct i2c_client *client,
1373 const struct i2c_device_id *id)
1374{
1375 struct w83791d_data *data;
1376 struct device *dev = &client->dev;
1377 int i, err;
1378 u8 has_fanpwm45;
1379
1380#ifdef DEBUG
1381 int val1;
1382 val1 = w83791d_read(client, W83791D_REG_DID_VID4);
1383 dev_dbg(dev, "Device ID version: %d.%d (0x%02x)\n",
1384 (val1 >> 5) & 0x07, (val1 >> 1) & 0x0f, val1);
1385#endif
1386
1387 data = devm_kzalloc(&client->dev, sizeof(struct w83791d_data),
1388 GFP_KERNEL);
1389 if (!data)
1390 return -ENOMEM;
1391
1392 i2c_set_clientdata(client, data);
1393 mutex_init(&data->update_lock);
1394
1395 err = w83791d_detect_subclients(client);
1396 if (err)
1397 return err;
1398
1399 /* Initialize the chip */
1400 w83791d_init_client(client);
1401
1402 /*
1403 * If the fan_div is changed, make sure there is a rational
1404 * fan_min in place
1405 */
1406 for (i = 0; i < NUMBER_OF_FANIN; i++)
1407 data->fan_min[i] = w83791d_read(client, W83791D_REG_FAN_MIN[i]);
1408
1409 /* Register sysfs hooks */
1410 err = sysfs_create_group(&client->dev.kobj, &w83791d_group);
1411 if (err)
1412 goto error3;
1413
1414 /* Check if pins of fan/pwm 4-5 are in use as GPIO */
1415 has_fanpwm45 = w83791d_read(client, W83791D_REG_GPIO) & 0x10;
1416 if (has_fanpwm45) {
1417 err = sysfs_create_group(&client->dev.kobj,
1418 &w83791d_group_fanpwm45);
1419 if (err)
1420 goto error4;
1421 }
1422
1423 /* Everything is ready, now register the working device */
1424 data->hwmon_dev = hwmon_device_register(dev);
1425 if (IS_ERR(data->hwmon_dev)) {
1426 err = PTR_ERR(data->hwmon_dev);
1427 goto error5;
1428 }
1429
1430 return 0;
1431
1432error5:
1433 if (has_fanpwm45)
1434 sysfs_remove_group(&client->dev.kobj, &w83791d_group_fanpwm45);
1435error4:
1436 sysfs_remove_group(&client->dev.kobj, &w83791d_group);
1437error3:
1438 if (data->lm75[0] != NULL)
1439 i2c_unregister_device(data->lm75[0]);
1440 if (data->lm75[1] != NULL)
1441 i2c_unregister_device(data->lm75[1]);
1442 return err;
1443}
1444
1445static int w83791d_remove(struct i2c_client *client)
1446{
1447 struct w83791d_data *data = i2c_get_clientdata(client);
1448
1449 hwmon_device_unregister(data->hwmon_dev);
1450 sysfs_remove_group(&client->dev.kobj, &w83791d_group);
1451
1452 if (data->lm75[0] != NULL)
1453 i2c_unregister_device(data->lm75[0]);
1454 if (data->lm75[1] != NULL)
1455 i2c_unregister_device(data->lm75[1]);
1456
1457 return 0;
1458}
1459
1460static void w83791d_init_client(struct i2c_client *client)
1461{
1462 struct w83791d_data *data = i2c_get_clientdata(client);
1463 u8 tmp;
1464 u8 old_beep;
1465
1466 /*
1467 * The difference between reset and init is that reset
1468 * does a hard reset of the chip via index 0x40, bit 7,
1469 * but init simply forces certain registers to have "sane"
1470 * values. The hope is that the BIOS has done the right
1471 * thing (which is why the default is reset=0, init=0),
1472 * but if not, reset is the hard hammer and init
1473 * is the soft mallet both of which are trying to whack
1474 * things into place...
1475 * NOTE: The data sheet makes a distinction between
1476 * "power on defaults" and "reset by MR". As far as I can tell,
1477 * the hard reset puts everything into a power-on state so I'm
1478 * not sure what "reset by MR" means or how it can happen.
1479 */
1480 if (reset || init) {
1481 /* keep some BIOS settings when we... */
1482 old_beep = w83791d_read(client, W83791D_REG_BEEP_CONFIG);
1483
1484 if (reset) {
1485 /* ... reset the chip and ... */
1486 w83791d_write(client, W83791D_REG_CONFIG, 0x80);
1487 }
1488
1489 /* ... disable power-on abnormal beep */
1490 w83791d_write(client, W83791D_REG_BEEP_CONFIG, old_beep | 0x80);
1491
1492 /* disable the global beep (not done by hard reset) */
1493 tmp = w83791d_read(client, W83791D_REG_BEEP_CTRL[1]);
1494 w83791d_write(client, W83791D_REG_BEEP_CTRL[1], tmp & 0xef);
1495
1496 if (init) {
1497 /* Make sure monitoring is turned on for add-ons */
1498 tmp = w83791d_read(client, W83791D_REG_TEMP2_CONFIG);
1499 if (tmp & 1) {
1500 w83791d_write(client, W83791D_REG_TEMP2_CONFIG,
1501 tmp & 0xfe);
1502 }
1503
1504 tmp = w83791d_read(client, W83791D_REG_TEMP3_CONFIG);
1505 if (tmp & 1) {
1506 w83791d_write(client, W83791D_REG_TEMP3_CONFIG,
1507 tmp & 0xfe);
1508 }
1509
1510 /* Start monitoring */
1511 tmp = w83791d_read(client, W83791D_REG_CONFIG) & 0xf7;
1512 w83791d_write(client, W83791D_REG_CONFIG, tmp | 0x01);
1513 }
1514 }
1515
1516 data->vrm = vid_which_vrm();
1517}
1518
1519static struct w83791d_data *w83791d_update_device(struct device *dev)
1520{
1521 struct i2c_client *client = to_i2c_client(dev);
1522 struct w83791d_data *data = i2c_get_clientdata(client);
1523 int i, j;
1524 u8 reg_array_tmp[3];
1525 u8 vbat_reg;
1526
1527 mutex_lock(&data->update_lock);
1528
1529 if (time_after(jiffies, data->last_updated + (HZ * 3))
1530 || !data->valid) {
1531 dev_dbg(dev, "Starting w83791d device update\n");
1532
1533 /* Update the voltages measured value and limits */
1534 for (i = 0; i < NUMBER_OF_VIN; i++) {
1535 data->in[i] = w83791d_read(client,
1536 W83791D_REG_IN[i]);
1537 data->in_max[i] = w83791d_read(client,
1538 W83791D_REG_IN_MAX[i]);
1539 data->in_min[i] = w83791d_read(client,
1540 W83791D_REG_IN_MIN[i]);
1541 }
1542
1543 /* Update the fan counts and limits */
1544 for (i = 0; i < NUMBER_OF_FANIN; i++) {
1545 /* Update the Fan measured value and limits */
1546 data->fan[i] = w83791d_read(client,
1547 W83791D_REG_FAN[i]);
1548 data->fan_min[i] = w83791d_read(client,
1549 W83791D_REG_FAN_MIN[i]);
1550 }
1551
1552 /* Update the fan divisor */
1553 for (i = 0; i < 3; i++) {
1554 reg_array_tmp[i] = w83791d_read(client,
1555 W83791D_REG_FAN_DIV[i]);
1556 }
1557 data->fan_div[0] = (reg_array_tmp[0] >> 4) & 0x03;
1558 data->fan_div[1] = (reg_array_tmp[0] >> 6) & 0x03;
1559 data->fan_div[2] = (reg_array_tmp[1] >> 6) & 0x03;
1560 data->fan_div[3] = reg_array_tmp[2] & 0x07;
1561 data->fan_div[4] = (reg_array_tmp[2] >> 4) & 0x07;
1562
1563 /*
1564 * The fan divisor for fans 0-2 get bit 2 from
1565 * bits 5-7 respectively of vbat register
1566 */
1567 vbat_reg = w83791d_read(client, W83791D_REG_VBAT);
1568 for (i = 0; i < 3; i++)
1569 data->fan_div[i] |= (vbat_reg >> (3 + i)) & 0x04;
1570
1571 /* Update PWM duty cycle */
1572 for (i = 0; i < NUMBER_OF_PWM; i++) {
1573 data->pwm[i] = w83791d_read(client,
1574 W83791D_REG_PWM[i]);
1575 }
1576
1577 /* Update PWM enable status */
1578 for (i = 0; i < 2; i++) {
1579 reg_array_tmp[i] = w83791d_read(client,
1580 W83791D_REG_FAN_CFG[i]);
1581 }
1582 data->pwm_enable[0] = (reg_array_tmp[0] >> 2) & 0x03;
1583 data->pwm_enable[1] = (reg_array_tmp[0] >> 4) & 0x03;
1584 data->pwm_enable[2] = (reg_array_tmp[1] >> 2) & 0x03;
1585
1586 /* Update PWM target temperature */
1587 for (i = 0; i < 3; i++) {
1588 data->temp_target[i] = w83791d_read(client,
1589 W83791D_REG_TEMP_TARGET[i]) & 0x7f;
1590 }
1591
1592 /* Update PWM temperature tolerance */
1593 for (i = 0; i < 2; i++) {
1594 reg_array_tmp[i] = w83791d_read(client,
1595 W83791D_REG_TEMP_TOL[i]);
1596 }
1597 data->temp_tolerance[0] = reg_array_tmp[0] & 0x0f;
1598 data->temp_tolerance[1] = (reg_array_tmp[0] >> 4) & 0x0f;
1599 data->temp_tolerance[2] = reg_array_tmp[1] & 0x0f;
1600
1601 /* Update the first temperature sensor */
1602 for (i = 0; i < 3; i++) {
1603 data->temp1[i] = w83791d_read(client,
1604 W83791D_REG_TEMP1[i]);
1605 }
1606
1607 /* Update the rest of the temperature sensors */
1608 for (i = 0; i < 2; i++) {
1609 for (j = 0; j < 3; j++) {
1610 data->temp_add[i][j] =
1611 (w83791d_read(client,
1612 W83791D_REG_TEMP_ADD[i][j * 2]) << 8) |
1613 w83791d_read(client,
1614 W83791D_REG_TEMP_ADD[i][j * 2 + 1]);
1615 }
1616 }
1617
1618 /* Update the realtime status */
1619 data->alarms =
1620 w83791d_read(client, W83791D_REG_ALARM1) +
1621 (w83791d_read(client, W83791D_REG_ALARM2) << 8) +
1622 (w83791d_read(client, W83791D_REG_ALARM3) << 16);
1623
1624 /* Update the beep configuration information */
1625 data->beep_mask =
1626 w83791d_read(client, W83791D_REG_BEEP_CTRL[0]) +
1627 (w83791d_read(client, W83791D_REG_BEEP_CTRL[1]) << 8) +
1628 (w83791d_read(client, W83791D_REG_BEEP_CTRL[2]) << 16);
1629
1630 /* Extract global beep enable flag */
1631 data->beep_enable =
1632 (data->beep_mask >> GLOBAL_BEEP_ENABLE_SHIFT) & 0x01;
1633
1634 /* Update the cpu voltage information */
1635 i = w83791d_read(client, W83791D_REG_VID_FANDIV);
1636 data->vid = i & 0x0f;
1637 data->vid |= (w83791d_read(client, W83791D_REG_DID_VID4) & 0x01)
1638 << 4;
1639
1640 data->last_updated = jiffies;
1641 data->valid = 1;
1642 }
1643
1644 mutex_unlock(&data->update_lock);
1645
1646#ifdef DEBUG
1647 w83791d_print_debug(data, dev);
1648#endif
1649
1650 return data;
1651}
1652
1653#ifdef DEBUG
1654static void w83791d_print_debug(struct w83791d_data *data, struct device *dev)
1655{
1656 int i = 0, j = 0;
1657
1658 dev_dbg(dev, "======Start of w83791d debug values======\n");
1659 dev_dbg(dev, "%d set of Voltages: ===>\n", NUMBER_OF_VIN);
1660 for (i = 0; i < NUMBER_OF_VIN; i++) {
1661 dev_dbg(dev, "vin[%d] is: 0x%02x\n", i, data->in[i]);
1662 dev_dbg(dev, "vin[%d] min is: 0x%02x\n", i, data->in_min[i]);
1663 dev_dbg(dev, "vin[%d] max is: 0x%02x\n", i, data->in_max[i]);
1664 }
1665 dev_dbg(dev, "%d set of Fan Counts/Divisors: ===>\n", NUMBER_OF_FANIN);
1666 for (i = 0; i < NUMBER_OF_FANIN; i++) {
1667 dev_dbg(dev, "fan[%d] is: 0x%02x\n", i, data->fan[i]);
1668 dev_dbg(dev, "fan[%d] min is: 0x%02x\n", i, data->fan_min[i]);
1669 dev_dbg(dev, "fan_div[%d] is: 0x%02x\n", i, data->fan_div[i]);
1670 }
1671
1672 /*
1673 * temperature math is signed, but only print out the
1674 * bits that matter
1675 */
1676 dev_dbg(dev, "%d set of Temperatures: ===>\n", NUMBER_OF_TEMPIN);
1677 for (i = 0; i < 3; i++)
1678 dev_dbg(dev, "temp1[%d] is: 0x%02x\n", i, (u8) data->temp1[i]);
1679 for (i = 0; i < 2; i++) {
1680 for (j = 0; j < 3; j++) {
1681 dev_dbg(dev, "temp_add[%d][%d] is: 0x%04x\n", i, j,
1682 (u16) data->temp_add[i][j]);
1683 }
1684 }
1685
1686 dev_dbg(dev, "Misc Information: ===>\n");
1687 dev_dbg(dev, "alarm is: 0x%08x\n", data->alarms);
1688 dev_dbg(dev, "beep_mask is: 0x%08x\n", data->beep_mask);
1689 dev_dbg(dev, "beep_enable is: %d\n", data->beep_enable);
1690 dev_dbg(dev, "vid is: 0x%02x\n", data->vid);
1691 dev_dbg(dev, "vrm is: 0x%02x\n", data->vrm);
1692 dev_dbg(dev, "=======End of w83791d debug values========\n");
1693 dev_dbg(dev, "\n");
1694}
1695#endif
1696
1697module_i2c_driver(w83791d_driver);
1698
1699MODULE_AUTHOR("Charles Spirakis <bezaur@gmail.com>");
1700MODULE_DESCRIPTION("W83791D driver");
1701MODULE_LICENSE("GPL");