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[PATCH] I2C: refactor message in i2c_detach_client
[linux-2.6/pdupreez.git] / drivers / hwmon / w83792d.c
blobea0c3519e03ad7af54c8ec6743dd3ded47e4274d
1 /*
2 w83792d.c - Part of lm_sensors, Linux kernel modules for hardware
3 monitoring
4 Copyright (C) 2004, 2005 Winbond Electronics Corp.
5 Chunhao Huang <DZShen@Winbond.com.tw>,
6 Rudolf Marek <r.marek@sh.cvut.cz>
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21
22 Note:
23 1. This driver is only for 2.6 kernel, 2.4 kernel need a different driver.
24 2. This driver is only for Winbond W83792D C version device, there
25 are also some motherboards with B version W83792D device. The
26 calculation method to in6-in7(measured value, limits) is a little
27 different between C and B version. C or B version can be identified
28 by CR[0x49h].
29 */
30
31 /*
32 Supports following chips:
33
34 Chip #vin #fanin #pwm #temp wchipid vendid i2c ISA
35 w83792d 9 7 7 3 0x7a 0x5ca3 yes no
36 */
37
38 #include <linux/config.h>
39 #include <linux/module.h>
40 #include <linux/init.h>
41 #include <linux/slab.h>
42 #include <linux/i2c.h>
43 #include <linux/i2c-sensor.h>
44 #include <linux/i2c-vid.h>
45 #include <linux/hwmon.h>
46 #include <linux/hwmon-sysfs.h>
47 #include <linux/err.h>
48
49 /* Addresses to scan */
50 static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END };
51
52 /* Insmod parameters */
53 SENSORS_INSMOD_1(w83792d);
54 I2C_CLIENT_MODULE_PARM(force_subclients, "List of subclient addresses: "
55 "{bus, clientaddr, subclientaddr1, subclientaddr2}");
56
57 static int init;
58 module_param(init, bool, 0);
59 MODULE_PARM_DESC(init, "Set to one to force chip initialization");
60
61 /* The W83792D registers */
62 static const u8 W83792D_REG_IN[9] = {
63 0x20, /* Vcore A in DataSheet */
64 0x21, /* Vcore B in DataSheet */
65 0x22, /* VIN0 in DataSheet */
66 0x23, /* VIN1 in DataSheet */
67 0x24, /* VIN2 in DataSheet */
68 0x25, /* VIN3 in DataSheet */
69 0x26, /* 5VCC in DataSheet */
70 0xB0, /* 5VSB in DataSheet */
71 0xB1 /* VBAT in DataSheet */
72 };
73 #define W83792D_REG_LOW_BITS1 0x3E /* Low Bits I in DataSheet */
74 #define W83792D_REG_LOW_BITS2 0x3F /* Low Bits II in DataSheet */
75 static const u8 W83792D_REG_IN_MAX[9] = {
76 0x2B, /* Vcore A High Limit in DataSheet */
77 0x2D, /* Vcore B High Limit in DataSheet */
78 0x2F, /* VIN0 High Limit in DataSheet */
79 0x31, /* VIN1 High Limit in DataSheet */
80 0x33, /* VIN2 High Limit in DataSheet */
81 0x35, /* VIN3 High Limit in DataSheet */
82 0x37, /* 5VCC High Limit in DataSheet */
83 0xB4, /* 5VSB High Limit in DataSheet */
84 0xB6 /* VBAT High Limit in DataSheet */
85 };
86 static const u8 W83792D_REG_IN_MIN[9] = {
87 0x2C, /* Vcore A Low Limit in DataSheet */
88 0x2E, /* Vcore B Low Limit in DataSheet */
89 0x30, /* VIN0 Low Limit in DataSheet */
90 0x32, /* VIN1 Low Limit in DataSheet */
91 0x34, /* VIN2 Low Limit in DataSheet */
92 0x36, /* VIN3 Low Limit in DataSheet */
93 0x38, /* 5VCC Low Limit in DataSheet */
94 0xB5, /* 5VSB Low Limit in DataSheet */
95 0xB7 /* VBAT Low Limit in DataSheet */
96 };
97 static const u8 W83792D_REG_FAN[7] = {
98 0x28, /* FAN 1 Count in DataSheet */
99 0x29, /* FAN 2 Count in DataSheet */
100 0x2A, /* FAN 3 Count in DataSheet */
101 0xB8, /* FAN 4 Count in DataSheet */
102 0xB9, /* FAN 5 Count in DataSheet */
103 0xBA, /* FAN 6 Count in DataSheet */
104 0xBE /* FAN 7 Count in DataSheet */
105 };
106 static const u8 W83792D_REG_FAN_MIN[7] = {
107 0x3B, /* FAN 1 Count Low Limit in DataSheet */
108 0x3C, /* FAN 2 Count Low Limit in DataSheet */
109 0x3D, /* FAN 3 Count Low Limit in DataSheet */
110 0xBB, /* FAN 4 Count Low Limit in DataSheet */
111 0xBC, /* FAN 5 Count Low Limit in DataSheet */
112 0xBD, /* FAN 6 Count Low Limit in DataSheet */
113 0xBF /* FAN 7 Count Low Limit in DataSheet */
114 };
115 #define W83792D_REG_FAN_CFG 0x84 /* FAN Configuration in DataSheet */
116 static const u8 W83792D_REG_FAN_DIV[4] = {
117 0x47, /* contains FAN2 and FAN1 Divisor */
118 0x5B, /* contains FAN4 and FAN3 Divisor */
119 0x5C, /* contains FAN6 and FAN5 Divisor */
120 0x9E /* contains FAN7 Divisor. */
121 };
122 static const u8 W83792D_REG_PWM[7] = {
123 0x81, /* FAN 1 Duty Cycle, be used to control */
124 0x83, /* FAN 2 Duty Cycle, be used to control */
125 0x94, /* FAN 3 Duty Cycle, be used to control */
126 0xA3, /* FAN 4 Duty Cycle, be used to control */
127 0xA4, /* FAN 5 Duty Cycle, be used to control */
128 0xA5, /* FAN 6 Duty Cycle, be used to control */
129 0xA6 /* FAN 7 Duty Cycle, be used to control */
130 };
131 #define W83792D_REG_BANK 0x4E
132 #define W83792D_REG_TEMP2_CONFIG 0xC2
133 #define W83792D_REG_TEMP3_CONFIG 0xCA
134
135 static const u8 W83792D_REG_TEMP1[3] = {
136 0x27, /* TEMP 1 in DataSheet */
137 0x39, /* TEMP 1 Over in DataSheet */
138 0x3A, /* TEMP 1 Hyst in DataSheet */
139 };
140
141 static const u8 W83792D_REG_TEMP_ADD[2][6] = {
142 { 0xC0, /* TEMP 2 in DataSheet */
143 0xC1, /* TEMP 2(0.5 deg) in DataSheet */
144 0xC5, /* TEMP 2 Over High part in DataSheet */
145 0xC6, /* TEMP 2 Over Low part in DataSheet */
146 0xC3, /* TEMP 2 Thyst High part in DataSheet */
147 0xC4 }, /* TEMP 2 Thyst Low part in DataSheet */
148 { 0xC8, /* TEMP 3 in DataSheet */
149 0xC9, /* TEMP 3(0.5 deg) in DataSheet */
150 0xCD, /* TEMP 3 Over High part in DataSheet */
151 0xCE, /* TEMP 3 Over Low part in DataSheet */
152 0xCB, /* TEMP 3 Thyst High part in DataSheet */
153 0xCC } /* TEMP 3 Thyst Low part in DataSheet */
154 };
155
156 static const u8 W83792D_REG_THERMAL[3] = {
157 0x85, /* SmartFanI: Fan1 target value */
158 0x86, /* SmartFanI: Fan2 target value */
159 0x96 /* SmartFanI: Fan3 target value */
160 };
161
162 static const u8 W83792D_REG_TOLERANCE[3] = {
163 0x87, /* (bit3-0)SmartFan Fan1 tolerance */
164 0x87, /* (bit7-4)SmartFan Fan2 tolerance */
165 0x97 /* (bit3-0)SmartFan Fan3 tolerance */
166 };
167
168 static const u8 W83792D_REG_POINTS[3][4] = {
169 { 0x85, /* SmartFanII: Fan1 temp point 1 */
170 0xE3, /* SmartFanII: Fan1 temp point 2 */
171 0xE4, /* SmartFanII: Fan1 temp point 3 */
172 0xE5 }, /* SmartFanII: Fan1 temp point 4 */
173 { 0x86, /* SmartFanII: Fan2 temp point 1 */
174 0xE6, /* SmartFanII: Fan2 temp point 2 */
175 0xE7, /* SmartFanII: Fan2 temp point 3 */
176 0xE8 }, /* SmartFanII: Fan2 temp point 4 */
177 { 0x96, /* SmartFanII: Fan3 temp point 1 */
178 0xE9, /* SmartFanII: Fan3 temp point 2 */
179 0xEA, /* SmartFanII: Fan3 temp point 3 */
180 0xEB } /* SmartFanII: Fan3 temp point 4 */
181 };
182
183 static const u8 W83792D_REG_LEVELS[3][4] = {
184 { 0x88, /* (bit3-0) SmartFanII: Fan1 Non-Stop */
185 0x88, /* (bit7-4) SmartFanII: Fan1 Level 1 */
186 0xE0, /* (bit7-4) SmartFanII: Fan1 Level 2 */
187 0xE0 }, /* (bit3-0) SmartFanII: Fan1 Level 3 */
188 { 0x89, /* (bit3-0) SmartFanII: Fan2 Non-Stop */
189 0x89, /* (bit7-4) SmartFanII: Fan2 Level 1 */
190 0xE1, /* (bit7-4) SmartFanII: Fan2 Level 2 */
191 0xE1 }, /* (bit3-0) SmartFanII: Fan2 Level 3 */
192 { 0x98, /* (bit3-0) SmartFanII: Fan3 Non-Stop */
193 0x98, /* (bit7-4) SmartFanII: Fan3 Level 1 */
194 0xE2, /* (bit7-4) SmartFanII: Fan3 Level 2 */
195 0xE2 } /* (bit3-0) SmartFanII: Fan3 Level 3 */
196 };
197
198 #define W83792D_REG_CONFIG 0x40
199 #define W83792D_REG_VID_FANDIV 0x47
200 #define W83792D_REG_CHIPID 0x49
201 #define W83792D_REG_WCHIPID 0x58
202 #define W83792D_REG_CHIPMAN 0x4F
203 #define W83792D_REG_PIN 0x4B
204 #define W83792D_REG_I2C_SUBADDR 0x4A
205
206 #define W83792D_REG_ALARM1 0xA9 /* realtime status register1 */
207 #define W83792D_REG_ALARM2 0xAA /* realtime status register2 */
208 #define W83792D_REG_ALARM3 0xAB /* realtime status register3 */
209 #define W83792D_REG_CHASSIS 0x42 /* Bit 5: Case Open status bit */
210 #define W83792D_REG_CHASSIS_CLR 0x44 /* Bit 7: Case Open CLR_CHS/Reset bit */
211
212 /* control in0/in1 's limit modifiability */
213 #define W83792D_REG_VID_IN_B 0x17
214
215 #define W83792D_REG_VBAT 0x5D
216 #define W83792D_REG_I2C_ADDR 0x48
217
218 /* Conversions. Rounding and limit checking is only done on the TO_REG
219 variants. Note that you should be a bit careful with which arguments
220 these macros are called: arguments may be evaluated more than once.
221 Fixing this is just not worth it. */
222 #define IN_FROM_REG(nr,val) (((nr)<=1)?(val*2): \
223 ((((nr)==6)||((nr)==7))?(val*6):(val*4)))
224 #define IN_TO_REG(nr,val) (((nr)<=1)?(val/2): \
225 ((((nr)==6)||((nr)==7))?(val/6):(val/4)))
226
227 static inline u8
228 FAN_TO_REG(long rpm, int div)
229 {
230 if (rpm == 0)
231 return 255;
232 rpm = SENSORS_LIMIT(rpm, 1, 1000000);
233 return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
234 }
235
236 #define FAN_FROM_REG(val,div) ((val) == 0 ? -1 : \
237 ((val) == 255 ? 0 : \
238 1350000 / ((val) * (div))))
239
240 /* for temp1 */
241 #define TEMP1_TO_REG(val) (SENSORS_LIMIT(((val) < 0 ? (val)+0x100*1000 \
242 : (val)) / 1000, 0, 0xff))
243 #define TEMP1_FROM_REG(val) (((val) & 0x80 ? (val)-0x100 : (val)) * 1000)
244 /* for temp2 and temp3, because they need addtional resolution */
245 #define TEMP_ADD_FROM_REG(val1, val2) \
246 ((((val1) & 0x80 ? (val1)-0x100 \
247 : (val1)) * 1000) + ((val2 & 0x80) ? 500 : 0))
248 #define TEMP_ADD_TO_REG_HIGH(val) \
249 (SENSORS_LIMIT(((val) < 0 ? (val)+0x100*1000 \
250 : (val)) / 1000, 0, 0xff))
251 #define TEMP_ADD_TO_REG_LOW(val) ((val%1000) ? 0x80 : 0x00)
252
253 #define PWM_FROM_REG(val) (val)
254 #define PWM_TO_REG(val) (SENSORS_LIMIT((val),0,255))
255 #define DIV_FROM_REG(val) (1 << (val))
256
257 static inline u8
258 DIV_TO_REG(long val)
259 {
260 int i;
261 val = SENSORS_LIMIT(val, 1, 128) >> 1;
262 for (i = 0; i < 6; i++) {
263 if (val == 0)
264 break;
265 val >>= 1;
266 }
267 return ((u8) i);
268 }
269
270 struct w83792d_data {
271 struct i2c_client client;
272 struct class_device *class_dev;
273 struct semaphore lock;
274 enum chips type;
275
276 struct semaphore update_lock;
277 char valid; /* !=0 if following fields are valid */
278 unsigned long last_updated; /* In jiffies */
279
280 /* array of 2 pointers to subclients */
281 struct i2c_client *lm75[2];
282
283 u8 in[9]; /* Register value */
284 u8 in_max[9]; /* Register value */
285 u8 in_min[9]; /* Register value */
286 u8 low_bits[2]; /* Additional resolution to voltage in0-6 */
287 u8 fan[7]; /* Register value */
288 u8 fan_min[7]; /* Register value */
289 u8 temp1[3]; /* current, over, thyst */
290 u8 temp_add[2][6]; /* Register value */
291 u8 fan_div[7]; /* Register encoding, shifted right */
292 u8 pwm[7]; /* We only consider the first 3 set of pwm,
293 although 792 chip has 7 set of pwm. */
294 u8 pwmenable[3];
295 u8 pwm_mode[7]; /* indicates PWM or DC mode: 1->PWM; 0->DC */
296 u32 alarms; /* realtime status register encoding,combined */
297 u8 chassis; /* Chassis status */
298 u8 chassis_clear; /* CLR_CHS, clear chassis intrusion detection */
299 u8 thermal_cruise[3]; /* Smart FanI: Fan1,2,3 target value */
300 u8 tolerance[3]; /* Fan1,2,3 tolerance(Smart Fan I/II) */
301 u8 sf2_points[3][4]; /* Smart FanII: Fan1,2,3 temperature points */
302 u8 sf2_levels[3][4]; /* Smart FanII: Fan1,2,3 duty cycle levels */
303 };
304
305 static int w83792d_attach_adapter(struct i2c_adapter *adapter);
306 static int w83792d_detect(struct i2c_adapter *adapter, int address, int kind);
307 static int w83792d_detach_client(struct i2c_client *client);
308
309 static int w83792d_read_value(struct i2c_client *client, u8 register);
310 static int w83792d_write_value(struct i2c_client *client, u8 register,
311 u8 value);
312 static struct w83792d_data *w83792d_update_device(struct device *dev);
313
314 #ifdef DEBUG
315 static void w83792d_print_debug(struct w83792d_data *data, struct device *dev);
316 #endif
317
318 static void w83792d_init_client(struct i2c_client *client);
319
320 static struct i2c_driver w83792d_driver = {
321 .owner = THIS_MODULE,
322 .name = "w83792d",
323 .flags = I2C_DF_NOTIFY,
324 .attach_adapter = w83792d_attach_adapter,
325 .detach_client = w83792d_detach_client,
326 };
327
328 static long in_count_from_reg(int nr, struct w83792d_data *data)
329 {
330 u16 vol_count = data->in[nr];
331 u16 low_bits = 0;
332 vol_count = (vol_count << 2);
333 switch (nr)
334 {
335 case 0: /* vin0 */
336 low_bits = (data->low_bits[0]) & 0x03;
337 break;
338 case 1: /* vin1 */
339 low_bits = ((data->low_bits[0]) & 0x0c) >> 2;
340 break;
341 case 2: /* vin2 */
342 low_bits = ((data->low_bits[0]) & 0x30) >> 4;
343 break;
344 case 3: /* vin3 */
345 low_bits = ((data->low_bits[0]) & 0xc0) >> 6;
346 break;
347 case 4: /* vin4 */
348 low_bits = (data->low_bits[1]) & 0x03;
349 break;
350 case 5: /* vin5 */
351 low_bits = ((data->low_bits[1]) & 0x0c) >> 2;
352 break;
353 case 6: /* vin6 */
354 low_bits = ((data->low_bits[1]) & 0x30) >> 4;
355 default:
356 break;
357 }
358 vol_count = vol_count | low_bits;
359 return vol_count;
360 }
361
362 /* following are the sysfs callback functions */
363 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
364 char *buf)
365 {
366 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
367 int nr = sensor_attr->index;
368 struct w83792d_data *data = w83792d_update_device(dev);
369 return sprintf(buf,"%ld\n", IN_FROM_REG(nr,(in_count_from_reg(nr, data))));
370 }
371
372 #define show_in_reg(reg) \
373 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
374 char *buf) \
375 { \
376 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
377 int nr = sensor_attr->index; \
378 struct w83792d_data *data = w83792d_update_device(dev); \
379 return sprintf(buf,"%ld\n", (long)(IN_FROM_REG(nr, (data->reg[nr])*4))); \
380 }
381
382 show_in_reg(in_min);
383 show_in_reg(in_max);
384
385 #define store_in_reg(REG, reg) \
386 static ssize_t store_in_##reg (struct device *dev, \
387 struct device_attribute *attr, \
388 const char *buf, size_t count) \
389 { \
390 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
391 int nr = sensor_attr->index; \
392 struct i2c_client *client = to_i2c_client(dev); \
393 struct w83792d_data *data = i2c_get_clientdata(client); \
394 u32 val; \
395 \
396 val = simple_strtoul(buf, NULL, 10); \
397 data->in_##reg[nr] = SENSORS_LIMIT(IN_TO_REG(nr, val)/4, 0, 255); \
398 w83792d_write_value(client, W83792D_REG_IN_##REG[nr], data->in_##reg[nr]); \
399 \
400 return count; \
401 }
402 store_in_reg(MIN, min);
403 store_in_reg(MAX, max);
404
405 #define sysfs_in_reg(offset) \
406 static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, show_in, \
407 NULL, offset); \
408 static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
409 show_in_min, store_in_min, offset); \
410 static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
411 show_in_max, store_in_max, offset);
412
413 sysfs_in_reg(0);
414 sysfs_in_reg(1);
415 sysfs_in_reg(2);
416 sysfs_in_reg(3);
417 sysfs_in_reg(4);
418 sysfs_in_reg(5);
419 sysfs_in_reg(6);
420 sysfs_in_reg(7);
421 sysfs_in_reg(8);
422
423 #define device_create_file_in(client, offset) \
424 do { \
425 device_create_file(&client->dev, &sensor_dev_attr_in##offset##_input.dev_attr); \
426 device_create_file(&client->dev, &sensor_dev_attr_in##offset##_max.dev_attr); \
427 device_create_file(&client->dev, &sensor_dev_attr_in##offset##_min.dev_attr); \
428 } while (0)
429
430 #define show_fan_reg(reg) \
431 static ssize_t show_##reg (struct device *dev, struct device_attribute *attr, \
432 char *buf) \
433 { \
434 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
435 int nr = sensor_attr->index - 1; \
436 struct w83792d_data *data = w83792d_update_device(dev); \
437 return sprintf(buf,"%d\n", \
438 FAN_FROM_REG(data->reg[nr], DIV_FROM_REG(data->fan_div[nr]))); \
439 }
440
441 show_fan_reg(fan);
442 show_fan_reg(fan_min);
443
444 static ssize_t
445 store_fan_min(struct device *dev, struct device_attribute *attr,
446 const char *buf, size_t count)
447 {
448 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
449 int nr = sensor_attr->index - 1;
450 struct i2c_client *client = to_i2c_client(dev);
451 struct w83792d_data *data = i2c_get_clientdata(client);
452 u32 val;
453
454 val = simple_strtoul(buf, NULL, 10);
455 data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
456 w83792d_write_value(client, W83792D_REG_FAN_MIN[nr],
457 data->fan_min[nr]);
458
459 return count;
460 }
461
462 static ssize_t
463 show_fan_div(struct device *dev, struct device_attribute *attr,
464 char *buf)
465 {
466 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
467 int nr = sensor_attr->index;
468 struct w83792d_data *data = w83792d_update_device(dev);
469 return sprintf(buf, "%u\n", DIV_FROM_REG(data->fan_div[nr - 1]));
470 }
471
472 /* Note: we save and restore the fan minimum here, because its value is
473 determined in part by the fan divisor. This follows the principle of
474 least suprise; the user doesn't expect the fan minimum to change just
475 because the divisor changed. */
476 static ssize_t
477 store_fan_div(struct device *dev, struct device_attribute *attr,
478 const char *buf, size_t count)
479 {
480 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
481 int nr = sensor_attr->index - 1;
482 struct i2c_client *client = to_i2c_client(dev);
483 struct w83792d_data *data = i2c_get_clientdata(client);
484 unsigned long min;
485 /*u8 reg;*/
486 u8 fan_div_reg = 0;
487 u8 tmp_fan_div;
488
489 /* Save fan_min */
490 min = FAN_FROM_REG(data->fan_min[nr],
491 DIV_FROM_REG(data->fan_div[nr]));
492
493 data->fan_div[nr] = DIV_TO_REG(simple_strtoul(buf, NULL, 10));
494
495 fan_div_reg = w83792d_read_value(client, W83792D_REG_FAN_DIV[nr >> 1]);
496 fan_div_reg &= (nr & 0x01) ? 0x8f : 0xf8;
497 tmp_fan_div = (nr & 0x01) ? (((data->fan_div[nr]) << 4) & 0x70)
498 : ((data->fan_div[nr]) & 0x07);
499 w83792d_write_value(client, W83792D_REG_FAN_DIV[nr >> 1],
500 fan_div_reg | tmp_fan_div);
501
502 /* Restore fan_min */
503 data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
504 w83792d_write_value(client, W83792D_REG_FAN_MIN[nr], data->fan_min[nr]);
505
506 return count;
507 }
508
509 #define sysfs_fan(offset) \
510 static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan, NULL, \
511 offset); \
512 static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \
513 show_fan_div, store_fan_div, offset); \
514 static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
515 show_fan_min, store_fan_min, offset);
516
517 sysfs_fan(1);
518 sysfs_fan(2);
519 sysfs_fan(3);
520 sysfs_fan(4);
521 sysfs_fan(5);
522 sysfs_fan(6);
523 sysfs_fan(7);
524
525 #define device_create_file_fan(client, offset) \
526 do { \
527 device_create_file(&client->dev, &sensor_dev_attr_fan##offset##_input.dev_attr); \
528 device_create_file(&client->dev, &sensor_dev_attr_fan##offset##_div.dev_attr); \
529 device_create_file(&client->dev, &sensor_dev_attr_fan##offset##_min.dev_attr); \
530 } while (0)
531
532
533 /* read/write the temperature1, includes measured value and limits */
534
535 static ssize_t show_temp1(struct device *dev, struct device_attribute *attr,
536 char *buf)
537 {
538 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
539 int nr = sensor_attr->index;
540 struct w83792d_data *data = w83792d_update_device(dev);
541 return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp1[nr]));
542 }
543
544 static ssize_t store_temp1(struct device *dev, struct device_attribute *attr,
545 const char *buf, size_t count)
546 {
547 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
548 int nr = sensor_attr->index;
549 struct i2c_client *client = to_i2c_client(dev);
550 struct w83792d_data *data = i2c_get_clientdata(client);
551 s32 val;
552
553 val = simple_strtol(buf, NULL, 10);
554
555 data->temp1[nr] = TEMP1_TO_REG(val);
556 w83792d_write_value(client, W83792D_REG_TEMP1[nr],
557 data->temp1[nr]);
558
559 return count;
560 }
561
562
563 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp1, NULL, 0);
564 static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR, show_temp1,
565 store_temp1, 1);
566 static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, show_temp1,
567 store_temp1, 2);
568
569 #define device_create_file_temp1(client) \
570 do { \
571 device_create_file(&client->dev, &sensor_dev_attr_temp1_input.dev_attr); \
572 device_create_file(&client->dev, &sensor_dev_attr_temp1_max.dev_attr); \
573 device_create_file(&client->dev, &sensor_dev_attr_temp1_max_hyst.dev_attr); \
574 } while (0)
575
576
577 /* read/write the temperature2-3, includes measured value and limits */
578
579 static ssize_t show_temp23(struct device *dev, struct device_attribute *attr,
580 char *buf)
581 {
582 struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
583 int nr = sensor_attr->nr;
584 int index = sensor_attr->index;
585 struct w83792d_data *data = w83792d_update_device(dev);
586 return sprintf(buf,"%ld\n",
587 (long)TEMP_ADD_FROM_REG(data->temp_add[nr][index],
588 data->temp_add[nr][index+1]));
589 }
590
591 static ssize_t store_temp23(struct device *dev, struct device_attribute *attr,
592 const char *buf, size_t count)
593 {
594 struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
595 int nr = sensor_attr->nr;
596 int index = sensor_attr->index;
597 struct i2c_client *client = to_i2c_client(dev);
598 struct w83792d_data *data = i2c_get_clientdata(client);
599 s32 val;
600
601 val = simple_strtol(buf, NULL, 10);
602
603 data->temp_add[nr][index] = TEMP_ADD_TO_REG_HIGH(val);
604 data->temp_add[nr][index+1] = TEMP_ADD_TO_REG_LOW(val);
605 w83792d_write_value(client, W83792D_REG_TEMP_ADD[nr][index],
606 data->temp_add[nr][index]);
607 w83792d_write_value(client, W83792D_REG_TEMP_ADD[nr][index+1],
608 data->temp_add[nr][index+1]);
609
610 return count;
611 }
612
613 #define sysfs_temp23(name,idx) \
614 static SENSOR_DEVICE_ATTR_2(name##_input, S_IRUGO, show_temp23, NULL, \
615 idx, 0); \
616 static SENSOR_DEVICE_ATTR_2(name##_max, S_IRUGO | S_IWUSR, \
617 show_temp23, store_temp23, idx, 2); \
618 static SENSOR_DEVICE_ATTR_2(name##_max_hyst, S_IRUGO | S_IWUSR, \
619 show_temp23, store_temp23, idx, 4);
620
621 sysfs_temp23(temp2,0)
622 sysfs_temp23(temp3,1)
623
624 #define device_create_file_temp_add(client, offset) \
625 do { \
626 device_create_file(&client->dev, &sensor_dev_attr_temp##offset##_input.dev_attr); \
627 device_create_file(&client->dev, &sensor_dev_attr_temp##offset##_max.dev_attr); \
628 device_create_file(&client->dev, \
629 &sensor_dev_attr_temp##offset##_max_hyst.dev_attr); \
630 } while (0)
631
632
633 /* get reatime status of all sensors items: voltage, temp, fan */
634 static ssize_t
635 show_alarms_reg(struct device *dev, struct device_attribute *attr, char *buf)
636 {
637 struct w83792d_data *data = w83792d_update_device(dev);
638 return sprintf(buf, "%d\n", data->alarms);
639 }
640
641 static
642 DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
643 #define device_create_file_alarms(client) \
644 device_create_file(&client->dev, &dev_attr_alarms);
645
646
647
648 static ssize_t
649 show_pwm(struct device *dev, struct device_attribute *attr,
650 char *buf)
651 {
652 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
653 int nr = sensor_attr->index;
654 struct w83792d_data *data = w83792d_update_device(dev);
655 return sprintf(buf, "%ld\n", (long) PWM_FROM_REG(data->pwm[nr-1]));
656 }
657
658 static ssize_t
659 show_pwmenable(struct device *dev, struct device_attribute *attr,
660 char *buf)
661 {
662 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
663 int nr = sensor_attr->index - 1;
664 struct w83792d_data *data = w83792d_update_device(dev);
665 long pwm_enable_tmp = 1;
666
667 switch (data->pwmenable[nr]) {
668 case 0:
669 pwm_enable_tmp = 1; /* manual mode */
670 break;
671 case 1:
672 pwm_enable_tmp = 3; /*thermal cruise/Smart Fan I */
673 break;
674 case 2:
675 pwm_enable_tmp = 2; /* Smart Fan II */
676 break;
677 }
678
679 return sprintf(buf, "%ld\n", pwm_enable_tmp);
680 }
681
682 static ssize_t
683 store_pwm(struct device *dev, struct device_attribute *attr,
684 const char *buf, size_t count)
685 {
686 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
687 int nr = sensor_attr->index - 1;
688 struct i2c_client *client = to_i2c_client(dev);
689 struct w83792d_data *data = i2c_get_clientdata(client);
690 u32 val;
691
692 val = simple_strtoul(buf, NULL, 10);
693 data->pwm[nr] = PWM_TO_REG(val);
694 w83792d_write_value(client, W83792D_REG_PWM[nr], data->pwm[nr]);
695
696 return count;
697 }
698
699 static ssize_t
700 store_pwmenable(struct device *dev, struct device_attribute *attr,
701 const char *buf, size_t count)
702 {
703 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
704 int nr = sensor_attr->index - 1;
705 struct i2c_client *client = to_i2c_client(dev);
706 struct w83792d_data *data = i2c_get_clientdata(client);
707 u32 val;
708 u8 fan_cfg_tmp, cfg1_tmp, cfg2_tmp, cfg3_tmp, cfg4_tmp;
709
710 val = simple_strtoul(buf, NULL, 10);
711 switch (val) {
712 case 1:
713 data->pwmenable[nr] = 0; /* manual mode */
714 break;
715 case 2:
716 data->pwmenable[nr] = 2; /* Smart Fan II */
717 break;
718 case 3:
719 data->pwmenable[nr] = 1; /* thermal cruise/Smart Fan I */
720 break;
721 default:
722 return -EINVAL;
723 }
724 cfg1_tmp = data->pwmenable[0];
725 cfg2_tmp = (data->pwmenable[1]) << 2;
726 cfg3_tmp = (data->pwmenable[2]) << 4;
727 cfg4_tmp = w83792d_read_value(client,W83792D_REG_FAN_CFG) & 0xc0;
728 fan_cfg_tmp = ((cfg4_tmp | cfg3_tmp) | cfg2_tmp) | cfg1_tmp;
729 w83792d_write_value(client, W83792D_REG_FAN_CFG, fan_cfg_tmp);
730
731 return count;
732 }
733
734 #define sysfs_pwm(offset) \
735 static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
736 show_pwm, store_pwm, offset); \
737 static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \
738 show_pwmenable, store_pwmenable, offset); \
739
740 sysfs_pwm(1);
741 sysfs_pwm(2);
742 sysfs_pwm(3);
743
744
745 #define device_create_file_pwm(client, offset) \
746 do { \
747 device_create_file(&client->dev, &sensor_dev_attr_pwm##offset.dev_attr); \
748 } while (0)
749
750 #define device_create_file_pwmenable(client, offset) \
751 do { \
752 device_create_file(&client->dev, &sensor_dev_attr_pwm##offset##_enable.dev_attr); \
753 } while (0)
754
755
756 static ssize_t
757 show_pwm_mode(struct device *dev, struct device_attribute *attr,
758 char *buf)
759 {
760 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
761 int nr = sensor_attr->index;
762 struct w83792d_data *data = w83792d_update_device(dev);
763 return sprintf(buf, "%d\n", data->pwm_mode[nr-1]);
764 }
765
766 static ssize_t
767 store_pwm_mode(struct device *dev, struct device_attribute *attr,
768 const char *buf, size_t count)
769 {
770 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
771 int nr = sensor_attr->index - 1;
772 struct i2c_client *client = to_i2c_client(dev);
773 struct w83792d_data *data = i2c_get_clientdata(client);
774 u32 val;
775 u8 pwm_mode_mask = 0;
776
777 val = simple_strtoul(buf, NULL, 10);
778 data->pwm_mode[nr] = SENSORS_LIMIT(val, 0, 1);
779 pwm_mode_mask = w83792d_read_value(client,
780 W83792D_REG_PWM[nr]) & 0x7f;
781 w83792d_write_value(client, W83792D_REG_PWM[nr],
782 ((data->pwm_mode[nr]) << 7) | pwm_mode_mask);
783
784 return count;
785 }
786
787 #define sysfs_pwm_mode(offset) \
788 static SENSOR_DEVICE_ATTR(pwm##offset##_mode, S_IRUGO | S_IWUSR, \
789 show_pwm_mode, store_pwm_mode, offset);
790
791 sysfs_pwm_mode(1);
792 sysfs_pwm_mode(2);
793 sysfs_pwm_mode(3);
794
795 #define device_create_file_pwm_mode(client, offset) \
796 do { \
797 device_create_file(&client->dev, &sensor_dev_attr_pwm##offset##_mode.dev_attr); \
798 } while (0)
799
800
801 static ssize_t
802 show_regs_chassis(struct device *dev, struct device_attribute *attr,
803 char *buf)
804 {
805 struct w83792d_data *data = w83792d_update_device(dev);
806 return sprintf(buf, "%d\n", data->chassis);
807 }
808
809 static DEVICE_ATTR(chassis, S_IRUGO, show_regs_chassis, NULL);
810
811 #define device_create_file_chassis(client) \
812 do { \
813 device_create_file(&client->dev, &dev_attr_chassis); \
814 } while (0)
815
816
817 static ssize_t
818 show_chassis_clear(struct device *dev, struct device_attribute *attr, char *buf)
819 {
820 struct w83792d_data *data = w83792d_update_device(dev);
821 return sprintf(buf, "%d\n", data->chassis_clear);
822 }
823
824 static ssize_t
825 store_chassis_clear(struct device *dev, struct device_attribute *attr,
826 const char *buf, size_t count)
827 {
828 struct i2c_client *client = to_i2c_client(dev);
829 struct w83792d_data *data = i2c_get_clientdata(client);
830 u32 val;
831 u8 temp1 = 0, temp2 = 0;
832
833 val = simple_strtoul(buf, NULL, 10);
834
835 data->chassis_clear = SENSORS_LIMIT(val, 0 ,1);
836 temp1 = ((data->chassis_clear) << 7) & 0x80;
837 temp2 = w83792d_read_value(client,
838 W83792D_REG_CHASSIS_CLR) & 0x7f;
839 w83792d_write_value(client, W83792D_REG_CHASSIS_CLR, temp1 | temp2);
840
841 return count;
842 }
843
844 static DEVICE_ATTR(chassis_clear, S_IRUGO | S_IWUSR,
845 show_chassis_clear, store_chassis_clear);
846
847 #define device_create_file_chassis_clear(client) \
848 do { \
849 device_create_file(&client->dev, &dev_attr_chassis_clear); \
850 } while (0)
851
852
853
854 /* For Smart Fan I / Thermal Cruise */
855 static ssize_t
856 show_thermal_cruise(struct device *dev, struct device_attribute *attr,
857 char *buf)
858 {
859 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
860 int nr = sensor_attr->index;
861 struct w83792d_data *data = w83792d_update_device(dev);
862 return sprintf(buf, "%ld\n", (long)data->thermal_cruise[nr-1]);
863 }
864
865 static ssize_t
866 store_thermal_cruise(struct device *dev, struct device_attribute *attr,
867 const char *buf, size_t count)
868 {
869 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
870 int nr = sensor_attr->index - 1;
871 struct i2c_client *client = to_i2c_client(dev);
872 struct w83792d_data *data = i2c_get_clientdata(client);
873 u32 val;
874 u8 target_tmp=0, target_mask=0;
875
876 val = simple_strtoul(buf, NULL, 10);
877 target_tmp = val;
878 target_tmp = target_tmp & 0x7f;
879 target_mask = w83792d_read_value(client, W83792D_REG_THERMAL[nr]) & 0x80;
880 data->thermal_cruise[nr] = SENSORS_LIMIT(target_tmp, 0, 255);
881 w83792d_write_value(client, W83792D_REG_THERMAL[nr],
882 (data->thermal_cruise[nr]) | target_mask);
883
884 return count;
885 }
886
887 #define sysfs_thermal_cruise(offset) \
888 static SENSOR_DEVICE_ATTR(thermal_cruise##offset, S_IRUGO | S_IWUSR, \
889 show_thermal_cruise, store_thermal_cruise, offset);
890
891 sysfs_thermal_cruise(1);
892 sysfs_thermal_cruise(2);
893 sysfs_thermal_cruise(3);
894
895 #define device_create_file_thermal_cruise(client, offset) \
896 do { \
897 device_create_file(&client->dev, \
898 &sensor_dev_attr_thermal_cruise##offset.dev_attr); \
899 } while (0)
900
901
902 /* For Smart Fan I/Thermal Cruise and Smart Fan II */
903 static ssize_t
904 show_tolerance(struct device *dev, struct device_attribute *attr,
905 char *buf)
906 {
907 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
908 int nr = sensor_attr->index;
909 struct w83792d_data *data = w83792d_update_device(dev);
910 return sprintf(buf, "%ld\n", (long)data->tolerance[nr-1]);
911 }
912
913 static ssize_t
914 store_tolerance(struct device *dev, struct device_attribute *attr,
915 const char *buf, size_t count)
916 {
917 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
918 int nr = sensor_attr->index - 1;
919 struct i2c_client *client = to_i2c_client(dev);
920 struct w83792d_data *data = i2c_get_clientdata(client);
921 u32 val;
922 u8 tol_tmp, tol_mask;
923
924 val = simple_strtoul(buf, NULL, 10);
925 tol_mask = w83792d_read_value(client,
926 W83792D_REG_TOLERANCE[nr]) & ((nr == 1) ? 0x0f : 0xf0);
927 tol_tmp = SENSORS_LIMIT(val, 0, 15);
928 tol_tmp &= 0x0f;
929 data->tolerance[nr] = tol_tmp;
930 if (nr == 1) {
931 tol_tmp <<= 4;
932 }
933 w83792d_write_value(client, W83792D_REG_TOLERANCE[nr],
934 tol_mask | tol_tmp);
935
936 return count;
937 }
938
939 #define sysfs_tolerance(offset) \
940 static SENSOR_DEVICE_ATTR(tolerance##offset, S_IRUGO | S_IWUSR, \
941 show_tolerance, store_tolerance, offset);
942
943 sysfs_tolerance(1);
944 sysfs_tolerance(2);
945 sysfs_tolerance(3);
946
947 #define device_create_file_tolerance(client, offset) \
948 do { \
949 device_create_file(&client->dev, &sensor_dev_attr_tolerance##offset.dev_attr); \
950 } while (0)
951
952
953 /* For Smart Fan II */
954 static ssize_t
955 show_sf2_point(struct device *dev, struct device_attribute *attr,
956 char *buf)
957 {
958 struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
959 int nr = sensor_attr->nr;
960 int index = sensor_attr->index;
961 struct w83792d_data *data = w83792d_update_device(dev);
962 return sprintf(buf, "%ld\n", (long)data->sf2_points[index-1][nr-1]);
963 }
964
965 static ssize_t
966 store_sf2_point(struct device *dev, struct device_attribute *attr,
967 const char *buf, size_t count)
968 {
969 struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
970 int nr = sensor_attr->nr - 1;
971 int index = sensor_attr->index - 1;
972 struct i2c_client *client = to_i2c_client(dev);
973 struct w83792d_data *data = i2c_get_clientdata(client);
974 u32 val;
975 u8 mask_tmp = 0;
976
977 val = simple_strtoul(buf, NULL, 10);
978 data->sf2_points[index][nr] = SENSORS_LIMIT(val, 0, 127);
979 mask_tmp = w83792d_read_value(client,
980 W83792D_REG_POINTS[index][nr]) & 0x80;
981 w83792d_write_value(client, W83792D_REG_POINTS[index][nr],
982 mask_tmp|data->sf2_points[index][nr]);
983
984 return count;
985 }
986
987 #define sysfs_sf2_point(offset, index) \
988 static SENSOR_DEVICE_ATTR_2(sf2_point##offset##_fan##index, S_IRUGO | S_IWUSR, \
989 show_sf2_point, store_sf2_point, offset, index);
990
991 sysfs_sf2_point(1, 1); /* Fan1 */
992 sysfs_sf2_point(2, 1); /* Fan1 */
993 sysfs_sf2_point(3, 1); /* Fan1 */
994 sysfs_sf2_point(4, 1); /* Fan1 */
995 sysfs_sf2_point(1, 2); /* Fan2 */
996 sysfs_sf2_point(2, 2); /* Fan2 */
997 sysfs_sf2_point(3, 2); /* Fan2 */
998 sysfs_sf2_point(4, 2); /* Fan2 */
999 sysfs_sf2_point(1, 3); /* Fan3 */
1000 sysfs_sf2_point(2, 3); /* Fan3 */
1001 sysfs_sf2_point(3, 3); /* Fan3 */
1002 sysfs_sf2_point(4, 3); /* Fan3 */
1003
1004 #define device_create_file_sf2_point(client, offset, index) \
1005 do { \
1006 device_create_file(&client->dev, \
1007 &sensor_dev_attr_sf2_point##offset##_fan##index.dev_attr); \
1008 } while (0)
1009
1010
1011 static ssize_t
1012 show_sf2_level(struct device *dev, struct device_attribute *attr,
1013 char *buf)
1014 {
1015 struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
1016 int nr = sensor_attr->nr;
1017 int index = sensor_attr->index;
1018 struct w83792d_data *data = w83792d_update_device(dev);
1019 return sprintf(buf, "%d\n",
1020 (((data->sf2_levels[index-1][nr]) * 100) / 15));
1021 }
1022
1023 static ssize_t
1024 store_sf2_level(struct device *dev, struct device_attribute *attr,
1025 const char *buf, size_t count)
1026 {
1027 struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
1028 int nr = sensor_attr->nr;
1029 int index = sensor_attr->index - 1;
1030 struct i2c_client *client = to_i2c_client(dev);
1031 struct w83792d_data *data = i2c_get_clientdata(client);
1032 u32 val;
1033 u8 mask_tmp=0, level_tmp=0;
1034
1035 val = simple_strtoul(buf, NULL, 10);
1036 data->sf2_levels[index][nr] = SENSORS_LIMIT((val * 15) / 100, 0, 15);
1037 mask_tmp = w83792d_read_value(client, W83792D_REG_LEVELS[index][nr])
1038 & ((nr==3) ? 0xf0 : 0x0f);
1039 if (nr==3) {
1040 level_tmp = data->sf2_levels[index][nr];
1041 } else {
1042 level_tmp = data->sf2_levels[index][nr] << 4;
1043 }
1044 w83792d_write_value(client, W83792D_REG_LEVELS[index][nr], level_tmp | mask_tmp);
1045
1046 return count;
1047 }
1048
1049 #define sysfs_sf2_level(offset, index) \
1050 static SENSOR_DEVICE_ATTR_2(sf2_level##offset##_fan##index, S_IRUGO | S_IWUSR, \
1051 show_sf2_level, store_sf2_level, offset, index);
1052
1053 sysfs_sf2_level(1, 1); /* Fan1 */
1054 sysfs_sf2_level(2, 1); /* Fan1 */
1055 sysfs_sf2_level(3, 1); /* Fan1 */
1056 sysfs_sf2_level(1, 2); /* Fan2 */
1057 sysfs_sf2_level(2, 2); /* Fan2 */
1058 sysfs_sf2_level(3, 2); /* Fan2 */
1059 sysfs_sf2_level(1, 3); /* Fan3 */
1060 sysfs_sf2_level(2, 3); /* Fan3 */
1061 sysfs_sf2_level(3, 3); /* Fan3 */
1062
1063 #define device_create_file_sf2_level(client, offset, index) \
1064 do { \
1065 device_create_file(&client->dev, \
1066 &sensor_dev_attr_sf2_level##offset##_fan##index.dev_attr); \
1067 } while (0)
1068
1069
1070 /* This function is called when:
1071 * w83792d_driver is inserted (when this module is loaded), for each
1072 available adapter
1073 * when a new adapter is inserted (and w83792d_driver is still present) */
1074 static int
1075 w83792d_attach_adapter(struct i2c_adapter *adapter)
1076 {
1077 if (!(adapter->class & I2C_CLASS_HWMON))
1078 return 0;
1079 return i2c_detect(adapter, &addr_data, w83792d_detect);
1080 }
1081
1082
1083 static int
1084 w83792d_create_subclient(struct i2c_adapter *adapter,
1085 struct i2c_client *new_client, int addr,
1086 struct i2c_client **sub_cli)
1087 {
1088 int err;
1089 struct i2c_client *sub_client;
1090
1091 (*sub_cli) = sub_client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
1092 if (!(sub_client)) {
1093 return -ENOMEM;
1094 }
1095 memset(sub_client, 0x00, sizeof(struct i2c_client));
1096 sub_client->addr = 0x48 + addr;
1097 i2c_set_clientdata(sub_client, NULL);
1098 sub_client->adapter = adapter;
1099 sub_client->driver = &w83792d_driver;
1100 sub_client->flags = 0;
1101 strlcpy(sub_client->name, "w83792d subclient", I2C_NAME_SIZE);
1102 if ((err = i2c_attach_client(sub_client))) {
1103 dev_err(&new_client->dev, "subclient registration "
1104 "at address 0x%x failed\n", sub_client->addr);
1105 kfree(sub_client);
1106 return err;
1107 }
1108 return 0;
1109 }
1110
1111
1112 static int
1113 w83792d_detect_subclients(struct i2c_adapter *adapter, int address, int kind,
1114 struct i2c_client *new_client)
1115 {
1116 int i, id, err;
1117 u8 val;
1118 struct w83792d_data *data = i2c_get_clientdata(new_client);
1119
1120 id = i2c_adapter_id(adapter);
1121 if (force_subclients[0] == id && force_subclients[1] == address) {
1122 for (i = 2; i <= 3; i++) {
1123 if (force_subclients[i] < 0x48 ||
1124 force_subclients[i] > 0x4f) {
1125 dev_err(&new_client->dev, "invalid subclient "
1126 "address %d; must be 0x48-0x4f\n",
1127 force_subclients[i]);
1128 err = -ENODEV;
1129 goto ERROR_SC_0;
1130 }
1131 }
1132 w83792d_write_value(new_client, W83792D_REG_I2C_SUBADDR,
1133 (force_subclients[2] & 0x07) |
1134 ((force_subclients[3] & 0x07) << 4));
1135 }
1136
1137 val = w83792d_read_value(new_client, W83792D_REG_I2C_SUBADDR);
1138 if (!(val & 0x08)) {
1139 err = w83792d_create_subclient(adapter, new_client, val & 0x7,
1140 &data->lm75[0]);
1141 if (err < 0)
1142 goto ERROR_SC_0;
1143 }
1144 if (!(val & 0x80)) {
1145 if ((data->lm75[0] != NULL) &&
1146 ((val & 0x7) == ((val >> 4) & 0x7))) {
1147 dev_err(&new_client->dev, "duplicate addresses 0x%x, "
1148 "use force_subclient\n", data->lm75[0]->addr);
1149 err = -ENODEV;
1150 goto ERROR_SC_1;
1151 }
1152 err = w83792d_create_subclient(adapter, new_client,
1153 (val >> 4) & 0x7, &data->lm75[1]);
1154 if (err < 0)
1155 goto ERROR_SC_1;
1156 }
1157
1158 return 0;
1159
1160 /* Undo inits in case of errors */
1161
1162 ERROR_SC_1:
1163 if (data->lm75[0] != NULL) {
1164 i2c_detach_client(data->lm75[0]);
1165 kfree(data->lm75[0]);
1166 }
1167 ERROR_SC_0:
1168 return err;
1169 }
1170
1171
1172 static int
1173 w83792d_detect(struct i2c_adapter *adapter, int address, int kind)
1174 {
1175 int i = 0, val1 = 0, val2;
1176 struct i2c_client *new_client;
1177 struct w83792d_data *data;
1178 int err = 0;
1179 const char *client_name = "";
1180
1181 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
1182 goto ERROR0;
1183 }
1184
1185 /* OK. For now, we presume we have a valid client. We now create the
1186 client structure, even though we cannot fill it completely yet.
1187 But it allows us to access w83792d_{read,write}_value. */
1188
1189 if (!(data = kmalloc(sizeof(struct w83792d_data), GFP_KERNEL))) {
1190 err = -ENOMEM;
1191 goto ERROR0;
1192 }
1193 memset(data, 0, sizeof(struct w83792d_data));
1194
1195 new_client = &data->client;
1196 i2c_set_clientdata(new_client, data);
1197 new_client->addr = address;
1198 init_MUTEX(&data->lock);
1199 new_client->adapter = adapter;
1200 new_client->driver = &w83792d_driver;
1201 new_client->flags = 0;
1202
1203 /* Now, we do the remaining detection. */
1204
1205 /* The w83792d may be stuck in some other bank than bank 0. This may
1206 make reading other information impossible. Specify a force=... or
1207 force_*=... parameter, and the Winbond will be reset to the right
1208 bank. */
1209 if (kind < 0) {
1210 if (w83792d_read_value(new_client, W83792D_REG_CONFIG) & 0x80) {
1211 dev_warn(&new_client->dev, "Detection failed at step "
1212 "3\n");
1213 goto ERROR1;
1214 }
1215 val1 = w83792d_read_value(new_client, W83792D_REG_BANK);
1216 val2 = w83792d_read_value(new_client, W83792D_REG_CHIPMAN);
1217 /* Check for Winbond ID if in bank 0 */
1218 if (!(val1 & 0x07)) { /* is Bank0 */
1219 if (((!(val1 & 0x80)) && (val2 != 0xa3)) ||
1220 ((val1 & 0x80) && (val2 != 0x5c))) {
1221 goto ERROR1;
1222 }
1223 }
1224 /* If Winbond chip, address of chip and W83792D_REG_I2C_ADDR
1225 should match */
1226 if (w83792d_read_value(new_client,
1227 W83792D_REG_I2C_ADDR) != address) {
1228 dev_warn(&new_client->dev, "Detection failed "
1229 "at step 5\n");
1230 goto ERROR1;
1231 }
1232 }
1233
1234 /* We have either had a force parameter, or we have already detected the
1235 Winbond. Put it now into bank 0 and Vendor ID High Byte */
1236 w83792d_write_value(new_client,
1237 W83792D_REG_BANK,
1238 (w83792d_read_value(new_client,
1239 W83792D_REG_BANK) & 0x78) | 0x80);
1240
1241 /* Determine the chip type. */
1242 if (kind <= 0) {
1243 /* get vendor ID */
1244 val2 = w83792d_read_value(new_client, W83792D_REG_CHIPMAN);
1245 if (val2 != 0x5c) { /* the vendor is NOT Winbond */
1246 goto ERROR1;
1247 }
1248 val1 = w83792d_read_value(new_client, W83792D_REG_WCHIPID);
1249 if (val1 == 0x7a && address >= 0x2c) {
1250 kind = w83792d;
1251 } else {
1252 if (kind == 0)
1253 dev_warn(&new_client->dev,
1254 "w83792d: Ignoring 'force' parameter for"
1255 " unknown chip at adapter %d, address"
1256 " 0x%02x\n", i2c_adapter_id(adapter),
1257 address);
1258 goto ERROR1;
1259 }
1260 }
1261
1262 if (kind == w83792d) {
1263 client_name = "w83792d";
1264 } else {
1265 dev_err(&new_client->dev, "w83792d: Internal error: unknown"
1266 " kind (%d)?!?", kind);
1267 goto ERROR1;
1268 }
1269
1270 /* Fill in the remaining client fields and put into the global list */
1271 strlcpy(new_client->name, client_name, I2C_NAME_SIZE);
1272 data->type = kind;
1273
1274 data->valid = 0;
1275 init_MUTEX(&data->update_lock);
1276
1277 /* Tell the I2C layer a new client has arrived */
1278 if ((err = i2c_attach_client(new_client)))
1279 goto ERROR1;
1280
1281 if ((err = w83792d_detect_subclients(adapter, address,
1282 kind, new_client)))
1283 goto ERROR2;
1284
1285 /* Initialize the chip */
1286 w83792d_init_client(new_client);
1287
1288 /* A few vars need to be filled upon startup */
1289 for (i = 1; i <= 7; i++) {
1290 data->fan_min[i - 1] = w83792d_read_value(new_client,
1291 W83792D_REG_FAN_MIN[i]);
1292 }
1293
1294 /* Register sysfs hooks */
1295 data->class_dev = hwmon_device_register(&new_client->dev);
1296 if (IS_ERR(data->class_dev)) {
1297 err = PTR_ERR(data->class_dev);
1298 goto ERROR3;
1299 }
1300 device_create_file_in(new_client, 0);
1301 device_create_file_in(new_client, 1);
1302 device_create_file_in(new_client, 2);
1303 device_create_file_in(new_client, 3);
1304 device_create_file_in(new_client, 4);
1305 device_create_file_in(new_client, 5);
1306 device_create_file_in(new_client, 6);
1307 device_create_file_in(new_client, 7);
1308 device_create_file_in(new_client, 8);
1309
1310 device_create_file_fan(new_client, 1);
1311 device_create_file_fan(new_client, 2);
1312 device_create_file_fan(new_client, 3);
1313 device_create_file_fan(new_client, 4);
1314 device_create_file_fan(new_client, 5);
1315 device_create_file_fan(new_client, 6);
1316 device_create_file_fan(new_client, 7);
1317
1318 device_create_file_temp1(new_client); /* Temp1 */
1319 device_create_file_temp_add(new_client, 2); /* Temp2 */
1320 device_create_file_temp_add(new_client, 3); /* Temp3 */
1321
1322 device_create_file_alarms(new_client);
1323
1324 device_create_file_pwm(new_client, 1);
1325 device_create_file_pwm(new_client, 2);
1326 device_create_file_pwm(new_client, 3);
1327
1328 device_create_file_pwmenable(new_client, 1);
1329 device_create_file_pwmenable(new_client, 2);
1330 device_create_file_pwmenable(new_client, 3);
1331
1332 device_create_file_pwm_mode(new_client, 1);
1333 device_create_file_pwm_mode(new_client, 2);
1334 device_create_file_pwm_mode(new_client, 3);
1335
1336 device_create_file_chassis(new_client);
1337 device_create_file_chassis_clear(new_client);
1338
1339 device_create_file_thermal_cruise(new_client, 1);
1340 device_create_file_thermal_cruise(new_client, 2);
1341 device_create_file_thermal_cruise(new_client, 3);
1342
1343 device_create_file_tolerance(new_client, 1);
1344 device_create_file_tolerance(new_client, 2);
1345 device_create_file_tolerance(new_client, 3);
1346
1347 device_create_file_sf2_point(new_client, 1, 1); /* Fan1 */
1348 device_create_file_sf2_point(new_client, 2, 1); /* Fan1 */
1349 device_create_file_sf2_point(new_client, 3, 1); /* Fan1 */
1350 device_create_file_sf2_point(new_client, 4, 1); /* Fan1 */
1351 device_create_file_sf2_point(new_client, 1, 2); /* Fan2 */
1352 device_create_file_sf2_point(new_client, 2, 2); /* Fan2 */
1353 device_create_file_sf2_point(new_client, 3, 2); /* Fan2 */
1354 device_create_file_sf2_point(new_client, 4, 2); /* Fan2 */
1355 device_create_file_sf2_point(new_client, 1, 3); /* Fan3 */
1356 device_create_file_sf2_point(new_client, 2, 3); /* Fan3 */
1357 device_create_file_sf2_point(new_client, 3, 3); /* Fan3 */
1358 device_create_file_sf2_point(new_client, 4, 3); /* Fan3 */
1359
1360 device_create_file_sf2_level(new_client, 1, 1); /* Fan1 */
1361 device_create_file_sf2_level(new_client, 2, 1); /* Fan1 */
1362 device_create_file_sf2_level(new_client, 3, 1); /* Fan1 */
1363 device_create_file_sf2_level(new_client, 1, 2); /* Fan2 */
1364 device_create_file_sf2_level(new_client, 2, 2); /* Fan2 */
1365 device_create_file_sf2_level(new_client, 3, 2); /* Fan2 */
1366 device_create_file_sf2_level(new_client, 1, 3); /* Fan3 */
1367 device_create_file_sf2_level(new_client, 2, 3); /* Fan3 */
1368 device_create_file_sf2_level(new_client, 3, 3); /* Fan3 */
1369
1370 return 0;
1371
1372 ERROR3:
1373 if (data->lm75[0] != NULL) {
1374 i2c_detach_client(data->lm75[0]);
1375 kfree(data->lm75[0]);
1376 }
1377 if (data->lm75[1] != NULL) {
1378 i2c_detach_client(data->lm75[1]);
1379 kfree(data->lm75[1]);
1380 }
1381 ERROR2:
1382 i2c_detach_client(new_client);
1383 ERROR1:
1384 kfree(data);
1385 ERROR0:
1386 return err;
1387 }
1388
1389 static int
1390 w83792d_detach_client(struct i2c_client *client)
1391 {
1392 struct w83792d_data *data = i2c_get_clientdata(client);
1393 int err;
1394
1395 /* main client */
1396 if (data)
1397 hwmon_device_unregister(data->class_dev);
1398
1399 if ((err = i2c_detach_client(client)))
1400 return err;
1401
1402 /* main client */
1403 if (data)
1404 kfree(data);
1405 /* subclient */
1406 else
1407 kfree(client);
1408
1409 return 0;
1410 }
1411
1412 /* The SMBus locks itself, usually, but nothing may access the Winbond between
1413 bank switches. ISA access must always be locked explicitly!
1414 We ignore the W83792D BUSY flag at this moment - it could lead to deadlocks,
1415 would slow down the W83792D access and should not be necessary.
1416 There are some ugly typecasts here, but the good news is - they should
1417 nowhere else be necessary! */
1418 static int
1419 w83792d_read_value(struct i2c_client *client, u8 reg)
1420 {
1421 int res=0;
1422 res = i2c_smbus_read_byte_data(client, reg);
1423
1424 return res;
1425 }
1426
1427 static int
1428 w83792d_write_value(struct i2c_client *client, u8 reg, u8 value)
1429 {
1430 i2c_smbus_write_byte_data(client, reg, value);
1431 return 0;
1432 }
1433
1434 /* Called when we have found a new W83792D. It should set limits, etc. */
1435 static void
1436 w83792d_init_client(struct i2c_client *client)
1437 {
1438 u8 temp2_cfg, temp3_cfg, vid_in_b;
1439
1440 if (init) {
1441 w83792d_write_value(client, W83792D_REG_CONFIG, 0x80);
1442 }
1443 /* Clear the bit6 of W83792D_REG_VID_IN_B(set it into 0):
1444 W83792D_REG_VID_IN_B bit6 = 0: the high/low limit of
1445 vin0/vin1 can be modified by user;
1446 W83792D_REG_VID_IN_B bit6 = 1: the high/low limit of
1447 vin0/vin1 auto-updated, can NOT be modified by user. */
1448 vid_in_b = w83792d_read_value(client, W83792D_REG_VID_IN_B);
1449 w83792d_write_value(client, W83792D_REG_VID_IN_B,
1450 vid_in_b & 0xbf);
1451
1452 temp2_cfg = w83792d_read_value(client, W83792D_REG_TEMP2_CONFIG);
1453 temp3_cfg = w83792d_read_value(client, W83792D_REG_TEMP3_CONFIG);
1454 w83792d_write_value(client, W83792D_REG_TEMP2_CONFIG,
1455 temp2_cfg & 0xe6);
1456 w83792d_write_value(client, W83792D_REG_TEMP3_CONFIG,
1457 temp3_cfg & 0xe6);
1458
1459 /* Start monitoring */
1460 w83792d_write_value(client, W83792D_REG_CONFIG,
1461 (w83792d_read_value(client,
1462 W83792D_REG_CONFIG) & 0xf7)
1463 | 0x01);
1464 }
1465
1466 static struct w83792d_data *w83792d_update_device(struct device *dev)
1467 {
1468 struct i2c_client *client = to_i2c_client(dev);
1469 struct w83792d_data *data = i2c_get_clientdata(client);
1470 int i, j;
1471 u8 reg_array_tmp[4], pwm_array_tmp[7], reg_tmp;
1472
1473 down(&data->update_lock);
1474
1475 if (time_after
1476 (jiffies - data->last_updated, (unsigned long) (HZ * 3))
1477 || time_before(jiffies, data->last_updated) || !data->valid) {
1478 dev_dbg(dev, "Starting device update\n");
1479
1480 /* Update the voltages measured value and limits */
1481 for (i = 0; i < 9; i++) {
1482 data->in[i] = w83792d_read_value(client,
1483 W83792D_REG_IN[i]);
1484 data->in_max[i] = w83792d_read_value(client,
1485 W83792D_REG_IN_MAX[i]);
1486 data->in_min[i] = w83792d_read_value(client,
1487 W83792D_REG_IN_MIN[i]);
1488 }
1489 data->low_bits[0] = w83792d_read_value(client,
1490 W83792D_REG_LOW_BITS1);
1491 data->low_bits[1] = w83792d_read_value(client,
1492 W83792D_REG_LOW_BITS2);
1493 for (i = 0; i < 7; i++) {
1494 /* Update the Fan measured value and limits */
1495 data->fan[i] = w83792d_read_value(client,
1496 W83792D_REG_FAN[i]);
1497 data->fan_min[i] = w83792d_read_value(client,
1498 W83792D_REG_FAN_MIN[i]);
1499 /* Update the PWM/DC Value and PWM/DC flag */
1500 pwm_array_tmp[i] = w83792d_read_value(client,
1501 W83792D_REG_PWM[i]);
1502 data->pwm[i] = pwm_array_tmp[i] & 0x0f;
1503 data->pwm_mode[i] = (pwm_array_tmp[i] >> 7) & 0x01;
1504 }
1505
1506 reg_tmp = w83792d_read_value(client, W83792D_REG_FAN_CFG);
1507 data->pwmenable[0] = reg_tmp & 0x03;
1508 data->pwmenable[1] = (reg_tmp>>2) & 0x03;
1509 data->pwmenable[2] = (reg_tmp>>4) & 0x03;
1510
1511 for (i = 0; i < 3; i++) {
1512 data->temp1[i] = w83792d_read_value(client,
1513 W83792D_REG_TEMP1[i]);
1514 }
1515 for (i = 0; i < 2; i++) {
1516 for (j = 0; j < 6; j++) {
1517 data->temp_add[i][j] = w83792d_read_value(
1518 client,W83792D_REG_TEMP_ADD[i][j]);
1519 }
1520 }
1521
1522 /* Update the Fan Divisor */
1523 for (i = 0; i < 4; i++) {
1524 reg_array_tmp[i] = w83792d_read_value(client,
1525 W83792D_REG_FAN_DIV[i]);
1526 }
1527 data->fan_div[0] = reg_array_tmp[0] & 0x07;
1528 data->fan_div[1] = (reg_array_tmp[0] >> 4) & 0x07;
1529 data->fan_div[2] = reg_array_tmp[1] & 0x07;
1530 data->fan_div[3] = (reg_array_tmp[1] >> 4) & 0x07;
1531 data->fan_div[4] = reg_array_tmp[2] & 0x07;
1532 data->fan_div[5] = (reg_array_tmp[2] >> 4) & 0x07;
1533 data->fan_div[6] = reg_array_tmp[3] & 0x07;
1534
1535 /* Update the realtime status */
1536 data->alarms = w83792d_read_value(client, W83792D_REG_ALARM1) +
1537 (w83792d_read_value(client, W83792D_REG_ALARM2) << 8) +
1538 (w83792d_read_value(client, W83792D_REG_ALARM3) << 16);
1539
1540 /* Update CaseOpen status and it's CLR_CHS. */
1541 data->chassis = (w83792d_read_value(client,
1542 W83792D_REG_CHASSIS) >> 5) & 0x01;
1543 data->chassis_clear = (w83792d_read_value(client,
1544 W83792D_REG_CHASSIS_CLR) >> 7) & 0x01;
1545
1546 /* Update Thermal Cruise/Smart Fan I target value */
1547 for (i = 0; i < 3; i++) {
1548 data->thermal_cruise[i] =
1549 w83792d_read_value(client,
1550 W83792D_REG_THERMAL[i]) & 0x7f;
1551 }
1552
1553 /* Update Smart Fan I/II tolerance */
1554 reg_tmp = w83792d_read_value(client, W83792D_REG_TOLERANCE[0]);
1555 data->tolerance[0] = reg_tmp & 0x0f;
1556 data->tolerance[1] = (reg_tmp >> 4) & 0x0f;
1557 data->tolerance[2] = w83792d_read_value(client,
1558 W83792D_REG_TOLERANCE[2]) & 0x0f;
1559
1560 /* Update Smart Fan II temperature points */
1561 for (i = 0; i < 3; i++) {
1562 for (j = 0; j < 4; j++) {
1563 data->sf2_points[i][j] = w83792d_read_value(
1564 client,W83792D_REG_POINTS[i][j]) & 0x7f;
1565 }
1566 }
1567
1568 /* Update Smart Fan II duty cycle levels */
1569 for (i = 0; i < 3; i++) {
1570 reg_tmp = w83792d_read_value(client,
1571 W83792D_REG_LEVELS[i][0]);
1572 data->sf2_levels[i][0] = reg_tmp & 0x0f;
1573 data->sf2_levels[i][1] = (reg_tmp >> 4) & 0x0f;
1574 reg_tmp = w83792d_read_value(client,
1575 W83792D_REG_LEVELS[i][2]);
1576 data->sf2_levels[i][2] = (reg_tmp >> 4) & 0x0f;
1577 data->sf2_levels[i][3] = reg_tmp & 0x0f;
1578 }
1579
1580 data->last_updated = jiffies;
1581 data->valid = 1;
1582 }
1583
1584 up(&data->update_lock);
1585
1586 #ifdef DEBUG
1587 w83792d_print_debug(data, dev);
1588 #endif
1589
1590 return data;
1591 }
1592
1593 #ifdef DEBUG
1594 static void w83792d_print_debug(struct w83792d_data *data, struct device *dev)
1595 {
1596 int i=0, j=0;
1597 dev_dbg(dev, "==========The following is the debug message...========\n");
1598 dev_dbg(dev, "9 set of Voltages: =====>\n");
1599 for (i=0; i<9; i++) {
1600 dev_dbg(dev, "vin[%d] is: 0x%x\n", i, data->in[i]);
1601 dev_dbg(dev, "vin[%d] max is: 0x%x\n", i, data->in_max[i]);
1602 dev_dbg(dev, "vin[%d] min is: 0x%x\n", i, data->in_min[i]);
1603 }
1604 dev_dbg(dev, "Low Bit1 is: 0x%x\n", data->low_bits[0]);
1605 dev_dbg(dev, "Low Bit2 is: 0x%x\n", data->low_bits[1]);
1606 dev_dbg(dev, "7 set of Fan Counts and Duty Cycles: =====>\n");
1607 for (i=0; i<7; i++) {
1608 dev_dbg(dev, "fan[%d] is: 0x%x\n", i, data->fan[i]);
1609 dev_dbg(dev, "fan[%d] min is: 0x%x\n", i, data->fan_min[i]);
1610 dev_dbg(dev, "pwm[%d] is: 0x%x\n", i, data->pwm[i]);
1611 dev_dbg(dev, "pwm_mode[%d] is: 0x%x\n", i, data->pwm_mode[i]);
1612 }
1613 dev_dbg(dev, "3 set of Temperatures: =====>\n");
1614 for (i=0; i<3; i++) {
1615 dev_dbg(dev, "temp1[%d] is: 0x%x\n", i, data->temp1[i]);
1616 }
1617
1618 for (i=0; i<2; i++) {
1619 for (j=0; j<6; j++) {
1620 dev_dbg(dev, "temp_add[%d][%d] is: 0x%x\n", i, j,
1621 data->temp_add[i][j]);
1622 }
1623 }
1624
1625 for (i=0; i<7; i++) {
1626 dev_dbg(dev, "fan_div[%d] is: 0x%x\n", i, data->fan_div[i]);
1627 }
1628 dev_dbg(dev, "==========End of the debug message...==================\n");
1629 dev_dbg(dev, "\n");
1630 }
1631 #endif
1632
1633 static int __init
1634 sensors_w83792d_init(void)
1635 {
1636 return i2c_add_driver(&w83792d_driver);
1637 }
1638
1639 static void __exit
1640 sensors_w83792d_exit(void)
1641 {
1642 i2c_del_driver(&w83792d_driver);
1643 }
1644
1645 MODULE_AUTHOR("Chunhao Huang @ Winbond <DZShen@Winbond.com.tw>");
1646 MODULE_DESCRIPTION("W83792AD/D driver for linux-2.6");
1647 MODULE_LICENSE("GPL");
1648
1649 module_init(sensors_w83792d_init);
1650 module_exit(sensors_w83792d_exit);
1651
Linux branches of Pieter du Preez