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[PATCH] Kprobes: preempt_disable/enable() simplification
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / hwmon / w83792d.c
blob4be59dbb78c472467c507587e9cb47279a557572
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/hwmon.h>
44 #include <linux/hwmon-sysfs.h>
45 #include <linux/err.h>
46
47 /* Addresses to scan */
48 static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END };
49
50 /* Insmod parameters */
51 I2C_CLIENT_INSMOD_1(w83792d);
52 I2C_CLIENT_MODULE_PARM(force_subclients, "List of subclient addresses: "
53 "{bus, clientaddr, subclientaddr1, subclientaddr2}");
54
55 static int init;
56 module_param(init, bool, 0);
57 MODULE_PARM_DESC(init, "Set to one to force chip initialization");
58
59 /* The W83792D registers */
60 static const u8 W83792D_REG_IN[9] = {
61 0x20, /* Vcore A in DataSheet */
62 0x21, /* Vcore B in DataSheet */
63 0x22, /* VIN0 in DataSheet */
64 0x23, /* VIN1 in DataSheet */
65 0x24, /* VIN2 in DataSheet */
66 0x25, /* VIN3 in DataSheet */
67 0x26, /* 5VCC in DataSheet */
68 0xB0, /* 5VSB in DataSheet */
69 0xB1 /* VBAT in DataSheet */
70 };
71 #define W83792D_REG_LOW_BITS1 0x3E /* Low Bits I in DataSheet */
72 #define W83792D_REG_LOW_BITS2 0x3F /* Low Bits II in DataSheet */
73 static const u8 W83792D_REG_IN_MAX[9] = {
74 0x2B, /* Vcore A High Limit in DataSheet */
75 0x2D, /* Vcore B High Limit in DataSheet */
76 0x2F, /* VIN0 High Limit in DataSheet */
77 0x31, /* VIN1 High Limit in DataSheet */
78 0x33, /* VIN2 High Limit in DataSheet */
79 0x35, /* VIN3 High Limit in DataSheet */
80 0x37, /* 5VCC High Limit in DataSheet */
81 0xB4, /* 5VSB High Limit in DataSheet */
82 0xB6 /* VBAT High Limit in DataSheet */
83 };
84 static const u8 W83792D_REG_IN_MIN[9] = {
85 0x2C, /* Vcore A Low Limit in DataSheet */
86 0x2E, /* Vcore B Low Limit in DataSheet */
87 0x30, /* VIN0 Low Limit in DataSheet */
88 0x32, /* VIN1 Low Limit in DataSheet */
89 0x34, /* VIN2 Low Limit in DataSheet */
90 0x36, /* VIN3 Low Limit in DataSheet */
91 0x38, /* 5VCC Low Limit in DataSheet */
92 0xB5, /* 5VSB Low Limit in DataSheet */
93 0xB7 /* VBAT Low Limit in DataSheet */
94 };
95 static const u8 W83792D_REG_FAN[7] = {
96 0x28, /* FAN 1 Count in DataSheet */
97 0x29, /* FAN 2 Count in DataSheet */
98 0x2A, /* FAN 3 Count in DataSheet */
99 0xB8, /* FAN 4 Count in DataSheet */
100 0xB9, /* FAN 5 Count in DataSheet */
101 0xBA, /* FAN 6 Count in DataSheet */
102 0xBE /* FAN 7 Count in DataSheet */
103 };
104 static const u8 W83792D_REG_FAN_MIN[7] = {
105 0x3B, /* FAN 1 Count Low Limit in DataSheet */
106 0x3C, /* FAN 2 Count Low Limit in DataSheet */
107 0x3D, /* FAN 3 Count Low Limit in DataSheet */
108 0xBB, /* FAN 4 Count Low Limit in DataSheet */
109 0xBC, /* FAN 5 Count Low Limit in DataSheet */
110 0xBD, /* FAN 6 Count Low Limit in DataSheet */
111 0xBF /* FAN 7 Count Low Limit in DataSheet */
112 };
113 #define W83792D_REG_FAN_CFG 0x84 /* FAN Configuration in DataSheet */
114 static const u8 W83792D_REG_FAN_DIV[4] = {
115 0x47, /* contains FAN2 and FAN1 Divisor */
116 0x5B, /* contains FAN4 and FAN3 Divisor */
117 0x5C, /* contains FAN6 and FAN5 Divisor */
118 0x9E /* contains FAN7 Divisor. */
119 };
120 static const u8 W83792D_REG_PWM[7] = {
121 0x81, /* FAN 1 Duty Cycle, be used to control */
122 0x83, /* FAN 2 Duty Cycle, be used to control */
123 0x94, /* FAN 3 Duty Cycle, be used to control */
124 0xA3, /* FAN 4 Duty Cycle, be used to control */
125 0xA4, /* FAN 5 Duty Cycle, be used to control */
126 0xA5, /* FAN 6 Duty Cycle, be used to control */
127 0xA6 /* FAN 7 Duty Cycle, be used to control */
128 };
129 #define W83792D_REG_BANK 0x4E
130 #define W83792D_REG_TEMP2_CONFIG 0xC2
131 #define W83792D_REG_TEMP3_CONFIG 0xCA
132
133 static const u8 W83792D_REG_TEMP1[3] = {
134 0x27, /* TEMP 1 in DataSheet */
135 0x39, /* TEMP 1 Over in DataSheet */
136 0x3A, /* TEMP 1 Hyst in DataSheet */
137 };
138
139 static const u8 W83792D_REG_TEMP_ADD[2][6] = {
140 { 0xC0, /* TEMP 2 in DataSheet */
141 0xC1, /* TEMP 2(0.5 deg) in DataSheet */
142 0xC5, /* TEMP 2 Over High part in DataSheet */
143 0xC6, /* TEMP 2 Over Low part in DataSheet */
144 0xC3, /* TEMP 2 Thyst High part in DataSheet */
145 0xC4 }, /* TEMP 2 Thyst Low part in DataSheet */
146 { 0xC8, /* TEMP 3 in DataSheet */
147 0xC9, /* TEMP 3(0.5 deg) in DataSheet */
148 0xCD, /* TEMP 3 Over High part in DataSheet */
149 0xCE, /* TEMP 3 Over Low part in DataSheet */
150 0xCB, /* TEMP 3 Thyst High part in DataSheet */
151 0xCC } /* TEMP 3 Thyst Low part in DataSheet */
152 };
153
154 static const u8 W83792D_REG_THERMAL[3] = {
155 0x85, /* SmartFanI: Fan1 target value */
156 0x86, /* SmartFanI: Fan2 target value */
157 0x96 /* SmartFanI: Fan3 target value */
158 };
159
160 static const u8 W83792D_REG_TOLERANCE[3] = {
161 0x87, /* (bit3-0)SmartFan Fan1 tolerance */
162 0x87, /* (bit7-4)SmartFan Fan2 tolerance */
163 0x97 /* (bit3-0)SmartFan Fan3 tolerance */
164 };
165
166 static const u8 W83792D_REG_POINTS[3][4] = {
167 { 0x85, /* SmartFanII: Fan1 temp point 1 */
168 0xE3, /* SmartFanII: Fan1 temp point 2 */
169 0xE4, /* SmartFanII: Fan1 temp point 3 */
170 0xE5 }, /* SmartFanII: Fan1 temp point 4 */
171 { 0x86, /* SmartFanII: Fan2 temp point 1 */
172 0xE6, /* SmartFanII: Fan2 temp point 2 */
173 0xE7, /* SmartFanII: Fan2 temp point 3 */
174 0xE8 }, /* SmartFanII: Fan2 temp point 4 */
175 { 0x96, /* SmartFanII: Fan3 temp point 1 */
176 0xE9, /* SmartFanII: Fan3 temp point 2 */
177 0xEA, /* SmartFanII: Fan3 temp point 3 */
178 0xEB } /* SmartFanII: Fan3 temp point 4 */
179 };
180
181 static const u8 W83792D_REG_LEVELS[3][4] = {
182 { 0x88, /* (bit3-0) SmartFanII: Fan1 Non-Stop */
183 0x88, /* (bit7-4) SmartFanII: Fan1 Level 1 */
184 0xE0, /* (bit7-4) SmartFanII: Fan1 Level 2 */
185 0xE0 }, /* (bit3-0) SmartFanII: Fan1 Level 3 */
186 { 0x89, /* (bit3-0) SmartFanII: Fan2 Non-Stop */
187 0x89, /* (bit7-4) SmartFanII: Fan2 Level 1 */
188 0xE1, /* (bit7-4) SmartFanII: Fan2 Level 2 */
189 0xE1 }, /* (bit3-0) SmartFanII: Fan2 Level 3 */
190 { 0x98, /* (bit3-0) SmartFanII: Fan3 Non-Stop */
191 0x98, /* (bit7-4) SmartFanII: Fan3 Level 1 */
192 0xE2, /* (bit7-4) SmartFanII: Fan3 Level 2 */
193 0xE2 } /* (bit3-0) SmartFanII: Fan3 Level 3 */
194 };
195
196 #define W83792D_REG_CONFIG 0x40
197 #define W83792D_REG_VID_FANDIV 0x47
198 #define W83792D_REG_CHIPID 0x49
199 #define W83792D_REG_WCHIPID 0x58
200 #define W83792D_REG_CHIPMAN 0x4F
201 #define W83792D_REG_PIN 0x4B
202 #define W83792D_REG_I2C_SUBADDR 0x4A
203
204 #define W83792D_REG_ALARM1 0xA9 /* realtime status register1 */
205 #define W83792D_REG_ALARM2 0xAA /* realtime status register2 */
206 #define W83792D_REG_ALARM3 0xAB /* realtime status register3 */
207 #define W83792D_REG_CHASSIS 0x42 /* Bit 5: Case Open status bit */
208 #define W83792D_REG_CHASSIS_CLR 0x44 /* Bit 7: Case Open CLR_CHS/Reset bit */
209
210 /* control in0/in1 's limit modifiability */
211 #define W83792D_REG_VID_IN_B 0x17
212
213 #define W83792D_REG_VBAT 0x5D
214 #define W83792D_REG_I2C_ADDR 0x48
215
216 /* Conversions. Rounding and limit checking is only done on the TO_REG
217 variants. Note that you should be a bit careful with which arguments
218 these macros are called: arguments may be evaluated more than once.
219 Fixing this is just not worth it. */
220 #define IN_FROM_REG(nr,val) (((nr)<=1)?(val*2): \
221 ((((nr)==6)||((nr)==7))?(val*6):(val*4)))
222 #define IN_TO_REG(nr,val) (((nr)<=1)?(val/2): \
223 ((((nr)==6)||((nr)==7))?(val/6):(val/4)))
224
225 static inline u8
226 FAN_TO_REG(long rpm, int div)
227 {
228 if (rpm == 0)
229 return 255;
230 rpm = SENSORS_LIMIT(rpm, 1, 1000000);
231 return SENSORS_LIMIT((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 */
239 #define TEMP1_TO_REG(val) (SENSORS_LIMIT(((val) < 0 ? (val)+0x100*1000 \
240 : (val)) / 1000, 0, 0xff))
241 #define TEMP1_FROM_REG(val) (((val) & 0x80 ? (val)-0x100 : (val)) * 1000)
242 /* for temp2 and temp3, because they need addtional resolution */
243 #define TEMP_ADD_FROM_REG(val1, val2) \
244 ((((val1) & 0x80 ? (val1)-0x100 \
245 : (val1)) * 1000) + ((val2 & 0x80) ? 500 : 0))
246 #define TEMP_ADD_TO_REG_HIGH(val) \
247 (SENSORS_LIMIT(((val) < 0 ? (val)+0x100*1000 \
248 : (val)) / 1000, 0, 0xff))
249 #define TEMP_ADD_TO_REG_LOW(val) ((val%1000) ? 0x80 : 0x00)
250
251 #define PWM_FROM_REG(val) (val)
252 #define PWM_TO_REG(val) (SENSORS_LIMIT((val),0,255))
253 #define DIV_FROM_REG(val) (1 << (val))
254
255 static inline u8
256 DIV_TO_REG(long val)
257 {
258 int i;
259 val = SENSORS_LIMIT(val, 1, 128) >> 1;
260 for (i = 0; i < 6; i++) {
261 if (val == 0)
262 break;
263 val >>= 1;
264 }
265 return ((u8) i);
266 }
267
268 struct w83792d_data {
269 struct i2c_client client;
270 struct class_device *class_dev;
271 struct semaphore lock;
272 enum chips type;
273
274 struct semaphore update_lock;
275 char valid; /* !=0 if following fields are valid */
276 unsigned long last_updated; /* In jiffies */
277
278 /* array of 2 pointers to subclients */
279 struct i2c_client *lm75[2];
280
281 u8 in[9]; /* Register value */
282 u8 in_max[9]; /* Register value */
283 u8 in_min[9]; /* Register value */
284 u8 low_bits[2]; /* Additional resolution to voltage in0-6 */
285 u8 fan[7]; /* Register value */
286 u8 fan_min[7]; /* Register value */
287 u8 temp1[3]; /* current, over, thyst */
288 u8 temp_add[2][6]; /* Register value */
289 u8 fan_div[7]; /* Register encoding, shifted right */
290 u8 pwm[7]; /* We only consider the first 3 set of pwm,
291 although 792 chip has 7 set of pwm. */
292 u8 pwmenable[3];
293 u8 pwm_mode[7]; /* indicates PWM or DC mode: 1->PWM; 0->DC */
294 u32 alarms; /* realtime status register encoding,combined */
295 u8 chassis; /* Chassis status */
296 u8 chassis_clear; /* CLR_CHS, clear chassis intrusion detection */
297 u8 thermal_cruise[3]; /* Smart FanI: Fan1,2,3 target value */
298 u8 tolerance[3]; /* Fan1,2,3 tolerance(Smart Fan I/II) */
299 u8 sf2_points[3][4]; /* Smart FanII: Fan1,2,3 temperature points */
300 u8 sf2_levels[3][4]; /* Smart FanII: Fan1,2,3 duty cycle levels */
301 };
302
303 static int w83792d_attach_adapter(struct i2c_adapter *adapter);
304 static int w83792d_detect(struct i2c_adapter *adapter, int address, int kind);
305 static int w83792d_detach_client(struct i2c_client *client);
306
307 static int w83792d_read_value(struct i2c_client *client, u8 register);
308 static int w83792d_write_value(struct i2c_client *client, u8 register,
309 u8 value);
310 static struct w83792d_data *w83792d_update_device(struct device *dev);
311
312 #ifdef DEBUG
313 static void w83792d_print_debug(struct w83792d_data *data, struct device *dev);
314 #endif
315
316 static void w83792d_init_client(struct i2c_client *client);
317
318 static struct i2c_driver w83792d_driver = {
319 .owner = THIS_MODULE,
320 .name = "w83792d",
321 .flags = I2C_DF_NOTIFY,
322 .attach_adapter = w83792d_attach_adapter,
323 .detach_client = w83792d_detach_client,
324 };
325
326 static long in_count_from_reg(int nr, struct w83792d_data *data)
327 {
328 u16 vol_count = data->in[nr];
329 u16 low_bits = 0;
330 vol_count = (vol_count << 2);
331 switch (nr)
332 {
333 case 0: /* vin0 */
334 low_bits = (data->low_bits[0]) & 0x03;
335 break;
336 case 1: /* vin1 */
337 low_bits = ((data->low_bits[0]) & 0x0c) >> 2;
338 break;
339 case 2: /* vin2 */
340 low_bits = ((data->low_bits[0]) & 0x30) >> 4;
341 break;
342 case 3: /* vin3 */
343 low_bits = ((data->low_bits[0]) & 0xc0) >> 6;
344 break;
345 case 4: /* vin4 */
346 low_bits = (data->low_bits[1]) & 0x03;
347 break;
348 case 5: /* vin5 */
349 low_bits = ((data->low_bits[1]) & 0x0c) >> 2;
350 break;
351 case 6: /* vin6 */
352 low_bits = ((data->low_bits[1]) & 0x30) >> 4;
353 default:
354 break;
355 }
356 vol_count = vol_count | low_bits;
357 return vol_count;
358 }
359
360 /* following are the sysfs callback functions */
361 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
362 char *buf)
363 {
364 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
365 int nr = sensor_attr->index;
366 struct w83792d_data *data = w83792d_update_device(dev);
367 return sprintf(buf,"%ld\n", IN_FROM_REG(nr,(in_count_from_reg(nr, data))));
368 }
369
370 #define show_in_reg(reg) \
371 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
372 char *buf) \
373 { \
374 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
375 int nr = sensor_attr->index; \
376 struct w83792d_data *data = w83792d_update_device(dev); \
377 return sprintf(buf,"%ld\n", (long)(IN_FROM_REG(nr, (data->reg[nr])*4))); \
378 }
379
380 show_in_reg(in_min);
381 show_in_reg(in_max);
382
383 #define store_in_reg(REG, reg) \
384 static ssize_t store_in_##reg (struct device *dev, \
385 struct device_attribute *attr, \
386 const char *buf, size_t count) \
387 { \
388 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
389 int nr = sensor_attr->index; \
390 struct i2c_client *client = to_i2c_client(dev); \
391 struct w83792d_data *data = i2c_get_clientdata(client); \
392 u32 val; \
393 \
394 val = simple_strtoul(buf, NULL, 10); \
395 data->in_##reg[nr] = SENSORS_LIMIT(IN_TO_REG(nr, val)/4, 0, 255); \
396 w83792d_write_value(client, W83792D_REG_IN_##REG[nr], data->in_##reg[nr]); \
397 \
398 return count; \
399 }
400 store_in_reg(MIN, min);
401 store_in_reg(MAX, max);
402
403 #define sysfs_in_reg(offset) \
404 static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, show_in, \
405 NULL, offset); \
406 static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
407 show_in_min, store_in_min, offset); \
408 static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
409 show_in_max, store_in_max, offset);
410
411 sysfs_in_reg(0);
412 sysfs_in_reg(1);
413 sysfs_in_reg(2);
414 sysfs_in_reg(3);
415 sysfs_in_reg(4);
416 sysfs_in_reg(5);
417 sysfs_in_reg(6);
418 sysfs_in_reg(7);
419 sysfs_in_reg(8);
420
421 #define device_create_file_in(client, offset) \
422 do { \
423 device_create_file(&client->dev, &sensor_dev_attr_in##offset##_input.dev_attr); \
424 device_create_file(&client->dev, &sensor_dev_attr_in##offset##_max.dev_attr); \
425 device_create_file(&client->dev, &sensor_dev_attr_in##offset##_min.dev_attr); \
426 } while (0)
427
428 #define show_fan_reg(reg) \
429 static ssize_t show_##reg (struct device *dev, struct device_attribute *attr, \
430 char *buf) \
431 { \
432 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
433 int nr = sensor_attr->index - 1; \
434 struct w83792d_data *data = w83792d_update_device(dev); \
435 return sprintf(buf,"%d\n", \
436 FAN_FROM_REG(data->reg[nr], DIV_FROM_REG(data->fan_div[nr]))); \
437 }
438
439 show_fan_reg(fan);
440 show_fan_reg(fan_min);
441
442 static ssize_t
443 store_fan_min(struct device *dev, struct device_attribute *attr,
444 const char *buf, size_t count)
445 {
446 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
447 int nr = sensor_attr->index - 1;
448 struct i2c_client *client = to_i2c_client(dev);
449 struct w83792d_data *data = i2c_get_clientdata(client);
450 u32 val;
451
452 val = simple_strtoul(buf, NULL, 10);
453 data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
454 w83792d_write_value(client, W83792D_REG_FAN_MIN[nr],
455 data->fan_min[nr]);
456
457 return count;
458 }
459
460 static ssize_t
461 show_fan_div(struct device *dev, struct device_attribute *attr,
462 char *buf)
463 {
464 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
465 int nr = sensor_attr->index;
466 struct w83792d_data *data = w83792d_update_device(dev);
467 return sprintf(buf, "%u\n", DIV_FROM_REG(data->fan_div[nr - 1]));
468 }
469
470 /* Note: we save and restore the fan minimum here, because its value is
471 determined in part by the fan divisor. This follows the principle of
472 least suprise; the user doesn't expect the fan minimum to change just
473 because the divisor changed. */
474 static ssize_t
475 store_fan_div(struct device *dev, struct device_attribute *attr,
476 const char *buf, size_t count)
477 {
478 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
479 int nr = sensor_attr->index - 1;
480 struct i2c_client *client = to_i2c_client(dev);
481 struct w83792d_data *data = i2c_get_clientdata(client);
482 unsigned long min;
483 /*u8 reg;*/
484 u8 fan_div_reg = 0;
485 u8 tmp_fan_div;
486
487 /* Save fan_min */
488 min = FAN_FROM_REG(data->fan_min[nr],
489 DIV_FROM_REG(data->fan_div[nr]));
490
491 data->fan_div[nr] = DIV_TO_REG(simple_strtoul(buf, NULL, 10));
492
493 fan_div_reg = w83792d_read_value(client, W83792D_REG_FAN_DIV[nr >> 1]);
494 fan_div_reg &= (nr & 0x01) ? 0x8f : 0xf8;
495 tmp_fan_div = (nr & 0x01) ? (((data->fan_div[nr]) << 4) & 0x70)
496 : ((data->fan_div[nr]) & 0x07);
497 w83792d_write_value(client, W83792D_REG_FAN_DIV[nr >> 1],
498 fan_div_reg | tmp_fan_div);
499
500 /* Restore fan_min */
501 data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
502 w83792d_write_value(client, W83792D_REG_FAN_MIN[nr], data->fan_min[nr]);
503
504 return count;
505 }
506
507 #define sysfs_fan(offset) \
508 static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan, NULL, \
509 offset); \
510 static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \
511 show_fan_div, store_fan_div, offset); \
512 static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
513 show_fan_min, store_fan_min, offset);
514
515 sysfs_fan(1);
516 sysfs_fan(2);
517 sysfs_fan(3);
518 sysfs_fan(4);
519 sysfs_fan(5);
520 sysfs_fan(6);
521 sysfs_fan(7);
522
523 #define device_create_file_fan(client, offset) \
524 do { \
525 device_create_file(&client->dev, &sensor_dev_attr_fan##offset##_input.dev_attr); \
526 device_create_file(&client->dev, &sensor_dev_attr_fan##offset##_div.dev_attr); \
527 device_create_file(&client->dev, &sensor_dev_attr_fan##offset##_min.dev_attr); \
528 } while (0)
529
530
531 /* read/write the temperature1, includes measured value and limits */
532
533 static ssize_t show_temp1(struct device *dev, struct device_attribute *attr,
534 char *buf)
535 {
536 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
537 int nr = sensor_attr->index;
538 struct w83792d_data *data = w83792d_update_device(dev);
539 return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp1[nr]));
540 }
541
542 static ssize_t store_temp1(struct device *dev, struct device_attribute *attr,
543 const char *buf, size_t count)
544 {
545 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
546 int nr = sensor_attr->index;
547 struct i2c_client *client = to_i2c_client(dev);
548 struct w83792d_data *data = i2c_get_clientdata(client);
549 s32 val;
550
551 val = simple_strtol(buf, NULL, 10);
552
553 data->temp1[nr] = TEMP1_TO_REG(val);
554 w83792d_write_value(client, W83792D_REG_TEMP1[nr],
555 data->temp1[nr]);
556
557 return count;
558 }
559
560
561 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp1, NULL, 0);
562 static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR, show_temp1,
563 store_temp1, 1);
564 static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, show_temp1,
565 store_temp1, 2);
566
567 #define device_create_file_temp1(client) \
568 do { \
569 device_create_file(&client->dev, &sensor_dev_attr_temp1_input.dev_attr); \
570 device_create_file(&client->dev, &sensor_dev_attr_temp1_max.dev_attr); \
571 device_create_file(&client->dev, &sensor_dev_attr_temp1_max_hyst.dev_attr); \
572 } while (0)
573
574
575 /* read/write the temperature2-3, includes measured value and limits */
576
577 static ssize_t show_temp23(struct device *dev, struct device_attribute *attr,
578 char *buf)
579 {
580 struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
581 int nr = sensor_attr->nr;
582 int index = sensor_attr->index;
583 struct w83792d_data *data = w83792d_update_device(dev);
584 return sprintf(buf,"%ld\n",
585 (long)TEMP_ADD_FROM_REG(data->temp_add[nr][index],
586 data->temp_add[nr][index+1]));
587 }
588
589 static ssize_t store_temp23(struct device *dev, struct device_attribute *attr,
590 const char *buf, size_t count)
591 {
592 struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
593 int nr = sensor_attr->nr;
594 int index = sensor_attr->index;
595 struct i2c_client *client = to_i2c_client(dev);
596 struct w83792d_data *data = i2c_get_clientdata(client);
597 s32 val;
598
599 val = simple_strtol(buf, NULL, 10);
600
601 data->temp_add[nr][index] = TEMP_ADD_TO_REG_HIGH(val);
602 data->temp_add[nr][index+1] = TEMP_ADD_TO_REG_LOW(val);
603 w83792d_write_value(client, W83792D_REG_TEMP_ADD[nr][index],
604 data->temp_add[nr][index]);
605 w83792d_write_value(client, W83792D_REG_TEMP_ADD[nr][index+1],
606 data->temp_add[nr][index+1]);
607
608 return count;
609 }
610
611 #define sysfs_temp23(name,idx) \
612 static SENSOR_DEVICE_ATTR_2(name##_input, S_IRUGO, show_temp23, NULL, \
613 idx, 0); \
614 static SENSOR_DEVICE_ATTR_2(name##_max, S_IRUGO | S_IWUSR, \
615 show_temp23, store_temp23, idx, 2); \
616 static SENSOR_DEVICE_ATTR_2(name##_max_hyst, S_IRUGO | S_IWUSR, \
617 show_temp23, store_temp23, idx, 4);
618
619 sysfs_temp23(temp2,0)
620 sysfs_temp23(temp3,1)
621
622 #define device_create_file_temp_add(client, offset) \
623 do { \
624 device_create_file(&client->dev, &sensor_dev_attr_temp##offset##_input.dev_attr); \
625 device_create_file(&client->dev, &sensor_dev_attr_temp##offset##_max.dev_attr); \
626 device_create_file(&client->dev, \
627 &sensor_dev_attr_temp##offset##_max_hyst.dev_attr); \
628 } while (0)
629
630
631 /* get reatime status of all sensors items: voltage, temp, fan */
632 static ssize_t
633 show_alarms_reg(struct device *dev, struct device_attribute *attr, char *buf)
634 {
635 struct w83792d_data *data = w83792d_update_device(dev);
636 return sprintf(buf, "%d\n", data->alarms);
637 }
638
639 static
640 DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
641 #define device_create_file_alarms(client) \
642 device_create_file(&client->dev, &dev_attr_alarms);
643
644
645
646 static ssize_t
647 show_pwm(struct device *dev, struct device_attribute *attr,
648 char *buf)
649 {
650 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
651 int nr = sensor_attr->index;
652 struct w83792d_data *data = w83792d_update_device(dev);
653 return sprintf(buf, "%ld\n", (long) PWM_FROM_REG(data->pwm[nr-1]));
654 }
655
656 static ssize_t
657 show_pwmenable(struct device *dev, struct device_attribute *attr,
658 char *buf)
659 {
660 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
661 int nr = sensor_attr->index - 1;
662 struct w83792d_data *data = w83792d_update_device(dev);
663 long pwm_enable_tmp = 1;
664
665 switch (data->pwmenable[nr]) {
666 case 0:
667 pwm_enable_tmp = 1; /* manual mode */
668 break;
669 case 1:
670 pwm_enable_tmp = 3; /*thermal cruise/Smart Fan I */
671 break;
672 case 2:
673 pwm_enable_tmp = 2; /* Smart Fan II */
674 break;
675 }
676
677 return sprintf(buf, "%ld\n", pwm_enable_tmp);
678 }
679
680 static ssize_t
681 store_pwm(struct device *dev, struct device_attribute *attr,
682 const char *buf, size_t count)
683 {
684 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
685 int nr = sensor_attr->index - 1;
686 struct i2c_client *client = to_i2c_client(dev);
687 struct w83792d_data *data = i2c_get_clientdata(client);
688 u32 val;
689
690 val = simple_strtoul(buf, NULL, 10);
691 data->pwm[nr] = PWM_TO_REG(val);
692 w83792d_write_value(client, W83792D_REG_PWM[nr], data->pwm[nr]);
693
694 return count;
695 }
696
697 static ssize_t
698 store_pwmenable(struct device *dev, struct device_attribute *attr,
699 const char *buf, size_t count)
700 {
701 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
702 int nr = sensor_attr->index - 1;
703 struct i2c_client *client = to_i2c_client(dev);
704 struct w83792d_data *data = i2c_get_clientdata(client);
705 u32 val;
706 u8 fan_cfg_tmp, cfg1_tmp, cfg2_tmp, cfg3_tmp, cfg4_tmp;
707
708 val = simple_strtoul(buf, NULL, 10);
709 switch (val) {
710 case 1:
711 data->pwmenable[nr] = 0; /* manual mode */
712 break;
713 case 2:
714 data->pwmenable[nr] = 2; /* Smart Fan II */
715 break;
716 case 3:
717 data->pwmenable[nr] = 1; /* thermal cruise/Smart Fan I */
718 break;
719 default:
720 return -EINVAL;
721 }
722 cfg1_tmp = data->pwmenable[0];
723 cfg2_tmp = (data->pwmenable[1]) << 2;
724 cfg3_tmp = (data->pwmenable[2]) << 4;
725 cfg4_tmp = w83792d_read_value(client,W83792D_REG_FAN_CFG) & 0xc0;
726 fan_cfg_tmp = ((cfg4_tmp | cfg3_tmp) | cfg2_tmp) | cfg1_tmp;
727 w83792d_write_value(client, W83792D_REG_FAN_CFG, fan_cfg_tmp);
728
729 return count;
730 }
731
732 #define sysfs_pwm(offset) \
733 static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
734 show_pwm, store_pwm, offset); \
735 static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \
736 show_pwmenable, store_pwmenable, offset); \
737
738 sysfs_pwm(1);
739 sysfs_pwm(2);
740 sysfs_pwm(3);
741
742
743 #define device_create_file_pwm(client, offset) \
744 do { \
745 device_create_file(&client->dev, &sensor_dev_attr_pwm##offset.dev_attr); \
746 } while (0)
747
748 #define device_create_file_pwmenable(client, offset) \
749 do { \
750 device_create_file(&client->dev, &sensor_dev_attr_pwm##offset##_enable.dev_attr); \
751 } while (0)
752
753
754 static ssize_t
755 show_pwm_mode(struct device *dev, struct device_attribute *attr,
756 char *buf)
757 {
758 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
759 int nr = sensor_attr->index;
760 struct w83792d_data *data = w83792d_update_device(dev);
761 return sprintf(buf, "%d\n", data->pwm_mode[nr-1]);
762 }
763
764 static ssize_t
765 store_pwm_mode(struct device *dev, struct device_attribute *attr,
766 const char *buf, size_t count)
767 {
768 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
769 int nr = sensor_attr->index - 1;
770 struct i2c_client *client = to_i2c_client(dev);
771 struct w83792d_data *data = i2c_get_clientdata(client);
772 u32 val;
773 u8 pwm_mode_mask = 0;
774
775 val = simple_strtoul(buf, NULL, 10);
776 data->pwm_mode[nr] = SENSORS_LIMIT(val, 0, 1);
777 pwm_mode_mask = w83792d_read_value(client,
778 W83792D_REG_PWM[nr]) & 0x7f;
779 w83792d_write_value(client, W83792D_REG_PWM[nr],
780 ((data->pwm_mode[nr]) << 7) | pwm_mode_mask);
781
782 return count;
783 }
784
785 #define sysfs_pwm_mode(offset) \
786 static SENSOR_DEVICE_ATTR(pwm##offset##_mode, S_IRUGO | S_IWUSR, \
787 show_pwm_mode, store_pwm_mode, offset);
788
789 sysfs_pwm_mode(1);
790 sysfs_pwm_mode(2);
791 sysfs_pwm_mode(3);
792
793 #define device_create_file_pwm_mode(client, offset) \
794 do { \
795 device_create_file(&client->dev, &sensor_dev_attr_pwm##offset##_mode.dev_attr); \
796 } while (0)
797
798
799 static ssize_t
800 show_regs_chassis(struct device *dev, struct device_attribute *attr,
801 char *buf)
802 {
803 struct w83792d_data *data = w83792d_update_device(dev);
804 return sprintf(buf, "%d\n", data->chassis);
805 }
806
807 static DEVICE_ATTR(chassis, S_IRUGO, show_regs_chassis, NULL);
808
809 #define device_create_file_chassis(client) \
810 do { \
811 device_create_file(&client->dev, &dev_attr_chassis); \
812 } while (0)
813
814
815 static ssize_t
816 show_chassis_clear(struct device *dev, struct device_attribute *attr, char *buf)
817 {
818 struct w83792d_data *data = w83792d_update_device(dev);
819 return sprintf(buf, "%d\n", data->chassis_clear);
820 }
821
822 static ssize_t
823 store_chassis_clear(struct device *dev, struct device_attribute *attr,
824 const char *buf, size_t count)
825 {
826 struct i2c_client *client = to_i2c_client(dev);
827 struct w83792d_data *data = i2c_get_clientdata(client);
828 u32 val;
829 u8 temp1 = 0, temp2 = 0;
830
831 val = simple_strtoul(buf, NULL, 10);
832
833 data->chassis_clear = SENSORS_LIMIT(val, 0 ,1);
834 temp1 = ((data->chassis_clear) << 7) & 0x80;
835 temp2 = w83792d_read_value(client,
836 W83792D_REG_CHASSIS_CLR) & 0x7f;
837 w83792d_write_value(client, W83792D_REG_CHASSIS_CLR, temp1 | temp2);
838
839 return count;
840 }
841
842 static DEVICE_ATTR(chassis_clear, S_IRUGO | S_IWUSR,
843 show_chassis_clear, store_chassis_clear);
844
845 #define device_create_file_chassis_clear(client) \
846 do { \
847 device_create_file(&client->dev, &dev_attr_chassis_clear); \
848 } while (0)
849
850
851
852 /* For Smart Fan I / Thermal Cruise */
853 static ssize_t
854 show_thermal_cruise(struct device *dev, struct device_attribute *attr,
855 char *buf)
856 {
857 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
858 int nr = sensor_attr->index;
859 struct w83792d_data *data = w83792d_update_device(dev);
860 return sprintf(buf, "%ld\n", (long)data->thermal_cruise[nr-1]);
861 }
862
863 static ssize_t
864 store_thermal_cruise(struct device *dev, struct device_attribute *attr,
865 const char *buf, size_t count)
866 {
867 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
868 int nr = sensor_attr->index - 1;
869 struct i2c_client *client = to_i2c_client(dev);
870 struct w83792d_data *data = i2c_get_clientdata(client);
871 u32 val;
872 u8 target_tmp=0, target_mask=0;
873
874 val = simple_strtoul(buf, NULL, 10);
875 target_tmp = val;
876 target_tmp = target_tmp & 0x7f;
877 target_mask = w83792d_read_value(client, W83792D_REG_THERMAL[nr]) & 0x80;
878 data->thermal_cruise[nr] = SENSORS_LIMIT(target_tmp, 0, 255);
879 w83792d_write_value(client, W83792D_REG_THERMAL[nr],
880 (data->thermal_cruise[nr]) | target_mask);
881
882 return count;
883 }
884
885 #define sysfs_thermal_cruise(offset) \
886 static SENSOR_DEVICE_ATTR(thermal_cruise##offset, S_IRUGO | S_IWUSR, \
887 show_thermal_cruise, store_thermal_cruise, offset);
888
889 sysfs_thermal_cruise(1);
890 sysfs_thermal_cruise(2);
891 sysfs_thermal_cruise(3);
892
893 #define device_create_file_thermal_cruise(client, offset) \
894 do { \
895 device_create_file(&client->dev, \
896 &sensor_dev_attr_thermal_cruise##offset.dev_attr); \
897 } while (0)
898
899
900 /* For Smart Fan I/Thermal Cruise and Smart Fan II */
901 static ssize_t
902 show_tolerance(struct device *dev, struct device_attribute *attr,
903 char *buf)
904 {
905 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
906 int nr = sensor_attr->index;
907 struct w83792d_data *data = w83792d_update_device(dev);
908 return sprintf(buf, "%ld\n", (long)data->tolerance[nr-1]);
909 }
910
911 static ssize_t
912 store_tolerance(struct device *dev, struct device_attribute *attr,
913 const char *buf, size_t count)
914 {
915 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
916 int nr = sensor_attr->index - 1;
917 struct i2c_client *client = to_i2c_client(dev);
918 struct w83792d_data *data = i2c_get_clientdata(client);
919 u32 val;
920 u8 tol_tmp, tol_mask;
921
922 val = simple_strtoul(buf, NULL, 10);
923 tol_mask = w83792d_read_value(client,
924 W83792D_REG_TOLERANCE[nr]) & ((nr == 1) ? 0x0f : 0xf0);
925 tol_tmp = SENSORS_LIMIT(val, 0, 15);
926 tol_tmp &= 0x0f;
927 data->tolerance[nr] = tol_tmp;
928 if (nr == 1) {
929 tol_tmp <<= 4;
930 }
931 w83792d_write_value(client, W83792D_REG_TOLERANCE[nr],
932 tol_mask | tol_tmp);
933
934 return count;
935 }
936
937 #define sysfs_tolerance(offset) \
938 static SENSOR_DEVICE_ATTR(tolerance##offset, S_IRUGO | S_IWUSR, \
939 show_tolerance, store_tolerance, offset);
940
941 sysfs_tolerance(1);
942 sysfs_tolerance(2);
943 sysfs_tolerance(3);
944
945 #define device_create_file_tolerance(client, offset) \
946 do { \
947 device_create_file(&client->dev, &sensor_dev_attr_tolerance##offset.dev_attr); \
948 } while (0)
949
950
951 /* For Smart Fan II */
952 static ssize_t
953 show_sf2_point(struct device *dev, struct device_attribute *attr,
954 char *buf)
955 {
956 struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
957 int nr = sensor_attr->nr;
958 int index = sensor_attr->index;
959 struct w83792d_data *data = w83792d_update_device(dev);
960 return sprintf(buf, "%ld\n", (long)data->sf2_points[index-1][nr-1]);
961 }
962
963 static ssize_t
964 store_sf2_point(struct device *dev, struct device_attribute *attr,
965 const char *buf, size_t count)
966 {
967 struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
968 int nr = sensor_attr->nr - 1;
969 int index = sensor_attr->index - 1;
970 struct i2c_client *client = to_i2c_client(dev);
971 struct w83792d_data *data = i2c_get_clientdata(client);
972 u32 val;
973 u8 mask_tmp = 0;
974
975 val = simple_strtoul(buf, NULL, 10);
976 data->sf2_points[index][nr] = SENSORS_LIMIT(val, 0, 127);
977 mask_tmp = w83792d_read_value(client,
978 W83792D_REG_POINTS[index][nr]) & 0x80;
979 w83792d_write_value(client, W83792D_REG_POINTS[index][nr],
980 mask_tmp|data->sf2_points[index][nr]);
981
982 return count;
983 }
984
985 #define sysfs_sf2_point(offset, index) \
986 static SENSOR_DEVICE_ATTR_2(sf2_point##offset##_fan##index, S_IRUGO | S_IWUSR, \
987 show_sf2_point, store_sf2_point, offset, index);
988
989 sysfs_sf2_point(1, 1); /* Fan1 */
990 sysfs_sf2_point(2, 1); /* Fan1 */
991 sysfs_sf2_point(3, 1); /* Fan1 */
992 sysfs_sf2_point(4, 1); /* Fan1 */
993 sysfs_sf2_point(1, 2); /* Fan2 */
994 sysfs_sf2_point(2, 2); /* Fan2 */
995 sysfs_sf2_point(3, 2); /* Fan2 */
996 sysfs_sf2_point(4, 2); /* Fan2 */
997 sysfs_sf2_point(1, 3); /* Fan3 */
998 sysfs_sf2_point(2, 3); /* Fan3 */
999 sysfs_sf2_point(3, 3); /* Fan3 */
1000 sysfs_sf2_point(4, 3); /* Fan3 */
1001
1002 #define device_create_file_sf2_point(client, offset, index) \
1003 do { \
1004 device_create_file(&client->dev, \
1005 &sensor_dev_attr_sf2_point##offset##_fan##index.dev_attr); \
1006 } while (0)
1007
1008
1009 static ssize_t
1010 show_sf2_level(struct device *dev, struct device_attribute *attr,
1011 char *buf)
1012 {
1013 struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
1014 int nr = sensor_attr->nr;
1015 int index = sensor_attr->index;
1016 struct w83792d_data *data = w83792d_update_device(dev);
1017 return sprintf(buf, "%d\n",
1018 (((data->sf2_levels[index-1][nr]) * 100) / 15));
1019 }
1020
1021 static ssize_t
1022 store_sf2_level(struct device *dev, struct device_attribute *attr,
1023 const char *buf, size_t count)
1024 {
1025 struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
1026 int nr = sensor_attr->nr;
1027 int index = sensor_attr->index - 1;
1028 struct i2c_client *client = to_i2c_client(dev);
1029 struct w83792d_data *data = i2c_get_clientdata(client);
1030 u32 val;
1031 u8 mask_tmp=0, level_tmp=0;
1032
1033 val = simple_strtoul(buf, NULL, 10);
1034 data->sf2_levels[index][nr] = SENSORS_LIMIT((val * 15) / 100, 0, 15);
1035 mask_tmp = w83792d_read_value(client, W83792D_REG_LEVELS[index][nr])
1036 & ((nr==3) ? 0xf0 : 0x0f);
1037 if (nr==3) {
1038 level_tmp = data->sf2_levels[index][nr];
1039 } else {
1040 level_tmp = data->sf2_levels[index][nr] << 4;
1041 }
1042 w83792d_write_value(client, W83792D_REG_LEVELS[index][nr], level_tmp | mask_tmp);
1043
1044 return count;
1045 }
1046
1047 #define sysfs_sf2_level(offset, index) \
1048 static SENSOR_DEVICE_ATTR_2(sf2_level##offset##_fan##index, S_IRUGO | S_IWUSR, \
1049 show_sf2_level, store_sf2_level, offset, index);
1050
1051 sysfs_sf2_level(1, 1); /* Fan1 */
1052 sysfs_sf2_level(2, 1); /* Fan1 */
1053 sysfs_sf2_level(3, 1); /* Fan1 */
1054 sysfs_sf2_level(1, 2); /* Fan2 */
1055 sysfs_sf2_level(2, 2); /* Fan2 */
1056 sysfs_sf2_level(3, 2); /* Fan2 */
1057 sysfs_sf2_level(1, 3); /* Fan3 */
1058 sysfs_sf2_level(2, 3); /* Fan3 */
1059 sysfs_sf2_level(3, 3); /* Fan3 */
1060
1061 #define device_create_file_sf2_level(client, offset, index) \
1062 do { \
1063 device_create_file(&client->dev, \
1064 &sensor_dev_attr_sf2_level##offset##_fan##index.dev_attr); \
1065 } while (0)
1066
1067
1068 /* This function is called when:
1069 * w83792d_driver is inserted (when this module is loaded), for each
1070 available adapter
1071 * when a new adapter is inserted (and w83792d_driver is still present) */
1072 static int
1073 w83792d_attach_adapter(struct i2c_adapter *adapter)
1074 {
1075 if (!(adapter->class & I2C_CLASS_HWMON))
1076 return 0;
1077 return i2c_probe(adapter, &addr_data, w83792d_detect);
1078 }
1079
1080
1081 static int
1082 w83792d_create_subclient(struct i2c_adapter *adapter,
1083 struct i2c_client *new_client, int addr,
1084 struct i2c_client **sub_cli)
1085 {
1086 int err;
1087 struct i2c_client *sub_client;
1088
1089 (*sub_cli) = sub_client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
1090 if (!(sub_client)) {
1091 return -ENOMEM;
1092 }
1093 sub_client->addr = 0x48 + addr;
1094 i2c_set_clientdata(sub_client, NULL);
1095 sub_client->adapter = adapter;
1096 sub_client->driver = &w83792d_driver;
1097 sub_client->flags = 0;
1098 strlcpy(sub_client->name, "w83792d subclient", I2C_NAME_SIZE);
1099 if ((err = i2c_attach_client(sub_client))) {
1100 dev_err(&new_client->dev, "subclient registration "
1101 "at address 0x%x failed\n", sub_client->addr);
1102 kfree(sub_client);
1103 return err;
1104 }
1105 return 0;
1106 }
1107
1108
1109 static int
1110 w83792d_detect_subclients(struct i2c_adapter *adapter, int address, int kind,
1111 struct i2c_client *new_client)
1112 {
1113 int i, id, err;
1114 u8 val;
1115 struct w83792d_data *data = i2c_get_clientdata(new_client);
1116
1117 id = i2c_adapter_id(adapter);
1118 if (force_subclients[0] == id && force_subclients[1] == address) {
1119 for (i = 2; i <= 3; i++) {
1120 if (force_subclients[i] < 0x48 ||
1121 force_subclients[i] > 0x4f) {
1122 dev_err(&new_client->dev, "invalid subclient "
1123 "address %d; must be 0x48-0x4f\n",
1124 force_subclients[i]);
1125 err = -ENODEV;
1126 goto ERROR_SC_0;
1127 }
1128 }
1129 w83792d_write_value(new_client, W83792D_REG_I2C_SUBADDR,
1130 (force_subclients[2] & 0x07) |
1131 ((force_subclients[3] & 0x07) << 4));
1132 }
1133
1134 val = w83792d_read_value(new_client, W83792D_REG_I2C_SUBADDR);
1135 if (!(val & 0x08)) {
1136 err = w83792d_create_subclient(adapter, new_client, val & 0x7,
1137 &data->lm75[0]);
1138 if (err < 0)
1139 goto ERROR_SC_0;
1140 }
1141 if (!(val & 0x80)) {
1142 if ((data->lm75[0] != NULL) &&
1143 ((val & 0x7) == ((val >> 4) & 0x7))) {
1144 dev_err(&new_client->dev, "duplicate addresses 0x%x, "
1145 "use force_subclient\n", data->lm75[0]->addr);
1146 err = -ENODEV;
1147 goto ERROR_SC_1;
1148 }
1149 err = w83792d_create_subclient(adapter, new_client,
1150 (val >> 4) & 0x7, &data->lm75[1]);
1151 if (err < 0)
1152 goto ERROR_SC_1;
1153 }
1154
1155 return 0;
1156
1157 /* Undo inits in case of errors */
1158
1159 ERROR_SC_1:
1160 if (data->lm75[0] != NULL) {
1161 i2c_detach_client(data->lm75[0]);
1162 kfree(data->lm75[0]);
1163 }
1164 ERROR_SC_0:
1165 return err;
1166 }
1167
1168
1169 static int
1170 w83792d_detect(struct i2c_adapter *adapter, int address, int kind)
1171 {
1172 int i = 0, val1 = 0, val2;
1173 struct i2c_client *new_client;
1174 struct w83792d_data *data;
1175 int err = 0;
1176 const char *client_name = "";
1177
1178 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
1179 goto ERROR0;
1180 }
1181
1182 /* OK. For now, we presume we have a valid client. We now create the
1183 client structure, even though we cannot fill it completely yet.
1184 But it allows us to access w83792d_{read,write}_value. */
1185
1186 if (!(data = kzalloc(sizeof(struct w83792d_data), GFP_KERNEL))) {
1187 err = -ENOMEM;
1188 goto ERROR0;
1189 }
1190
1191 new_client = &data->client;
1192 i2c_set_clientdata(new_client, data);
1193 new_client->addr = address;
1194 init_MUTEX(&data->lock);
1195 new_client->adapter = adapter;
1196 new_client->driver = &w83792d_driver;
1197 new_client->flags = 0;
1198
1199 /* Now, we do the remaining detection. */
1200
1201 /* The w83792d may be stuck in some other bank than bank 0. This may
1202 make reading other information impossible. Specify a force=... or
1203 force_*=... parameter, and the Winbond will be reset to the right
1204 bank. */
1205 if (kind < 0) {
1206 if (w83792d_read_value(new_client, W83792D_REG_CONFIG) & 0x80) {
1207 dev_warn(&new_client->dev, "Detection failed at step "
1208 "3\n");
1209 goto ERROR1;
1210 }
1211 val1 = w83792d_read_value(new_client, W83792D_REG_BANK);
1212 val2 = w83792d_read_value(new_client, W83792D_REG_CHIPMAN);
1213 /* Check for Winbond ID if in bank 0 */
1214 if (!(val1 & 0x07)) { /* is Bank0 */
1215 if (((!(val1 & 0x80)) && (val2 != 0xa3)) ||
1216 ((val1 & 0x80) && (val2 != 0x5c))) {
1217 goto ERROR1;
1218 }
1219 }
1220 /* If Winbond chip, address of chip and W83792D_REG_I2C_ADDR
1221 should match */
1222 if (w83792d_read_value(new_client,
1223 W83792D_REG_I2C_ADDR) != address) {
1224 dev_warn(&new_client->dev, "Detection failed "
1225 "at step 5\n");
1226 goto ERROR1;
1227 }
1228 }
1229
1230 /* We have either had a force parameter, or we have already detected the
1231 Winbond. Put it now into bank 0 and Vendor ID High Byte */
1232 w83792d_write_value(new_client,
1233 W83792D_REG_BANK,
1234 (w83792d_read_value(new_client,
1235 W83792D_REG_BANK) & 0x78) | 0x80);
1236
1237 /* Determine the chip type. */
1238 if (kind <= 0) {
1239 /* get vendor ID */
1240 val2 = w83792d_read_value(new_client, W83792D_REG_CHIPMAN);
1241 if (val2 != 0x5c) { /* the vendor is NOT Winbond */
1242 goto ERROR1;
1243 }
1244 val1 = w83792d_read_value(new_client, W83792D_REG_WCHIPID);
1245 if (val1 == 0x7a && address >= 0x2c) {
1246 kind = w83792d;
1247 } else {
1248 if (kind == 0)
1249 dev_warn(&new_client->dev,
1250 "w83792d: Ignoring 'force' parameter for"
1251 " unknown chip at adapter %d, address"
1252 " 0x%02x\n", i2c_adapter_id(adapter),
1253 address);
1254 goto ERROR1;
1255 }
1256 }
1257
1258 if (kind == w83792d) {
1259 client_name = "w83792d";
1260 } else {
1261 dev_err(&new_client->dev, "w83792d: Internal error: unknown"
1262 " kind (%d)?!?", kind);
1263 goto ERROR1;
1264 }
1265
1266 /* Fill in the remaining client fields and put into the global list */
1267 strlcpy(new_client->name, client_name, I2C_NAME_SIZE);
1268 data->type = kind;
1269
1270 data->valid = 0;
1271 init_MUTEX(&data->update_lock);
1272
1273 /* Tell the I2C layer a new client has arrived */
1274 if ((err = i2c_attach_client(new_client)))
1275 goto ERROR1;
1276
1277 if ((err = w83792d_detect_subclients(adapter, address,
1278 kind, new_client)))
1279 goto ERROR2;
1280
1281 /* Initialize the chip */
1282 w83792d_init_client(new_client);
1283
1284 /* A few vars need to be filled upon startup */
1285 for (i = 1; i <= 7; i++) {
1286 data->fan_min[i - 1] = w83792d_read_value(new_client,
1287 W83792D_REG_FAN_MIN[i]);
1288 }
1289
1290 /* Register sysfs hooks */
1291 data->class_dev = hwmon_device_register(&new_client->dev);
1292 if (IS_ERR(data->class_dev)) {
1293 err = PTR_ERR(data->class_dev);
1294 goto ERROR3;
1295 }
1296 device_create_file_in(new_client, 0);
1297 device_create_file_in(new_client, 1);
1298 device_create_file_in(new_client, 2);
1299 device_create_file_in(new_client, 3);
1300 device_create_file_in(new_client, 4);
1301 device_create_file_in(new_client, 5);
1302 device_create_file_in(new_client, 6);
1303 device_create_file_in(new_client, 7);
1304 device_create_file_in(new_client, 8);
1305
1306 device_create_file_fan(new_client, 1);
1307 device_create_file_fan(new_client, 2);
1308 device_create_file_fan(new_client, 3);
1309 device_create_file_fan(new_client, 4);
1310 device_create_file_fan(new_client, 5);
1311 device_create_file_fan(new_client, 6);
1312 device_create_file_fan(new_client, 7);
1313
1314 device_create_file_temp1(new_client); /* Temp1 */
1315 device_create_file_temp_add(new_client, 2); /* Temp2 */
1316 device_create_file_temp_add(new_client, 3); /* Temp3 */
1317
1318 device_create_file_alarms(new_client);
1319
1320 device_create_file_pwm(new_client, 1);
1321 device_create_file_pwm(new_client, 2);
1322 device_create_file_pwm(new_client, 3);
1323
1324 device_create_file_pwmenable(new_client, 1);
1325 device_create_file_pwmenable(new_client, 2);
1326 device_create_file_pwmenable(new_client, 3);
1327
1328 device_create_file_pwm_mode(new_client, 1);
1329 device_create_file_pwm_mode(new_client, 2);
1330 device_create_file_pwm_mode(new_client, 3);
1331
1332 device_create_file_chassis(new_client);
1333 device_create_file_chassis_clear(new_client);
1334
1335 device_create_file_thermal_cruise(new_client, 1);
1336 device_create_file_thermal_cruise(new_client, 2);
1337 device_create_file_thermal_cruise(new_client, 3);
1338
1339 device_create_file_tolerance(new_client, 1);
1340 device_create_file_tolerance(new_client, 2);
1341 device_create_file_tolerance(new_client, 3);
1342
1343 device_create_file_sf2_point(new_client, 1, 1); /* Fan1 */
1344 device_create_file_sf2_point(new_client, 2, 1); /* Fan1 */
1345 device_create_file_sf2_point(new_client, 3, 1); /* Fan1 */
1346 device_create_file_sf2_point(new_client, 4, 1); /* Fan1 */
1347 device_create_file_sf2_point(new_client, 1, 2); /* Fan2 */
1348 device_create_file_sf2_point(new_client, 2, 2); /* Fan2 */
1349 device_create_file_sf2_point(new_client, 3, 2); /* Fan2 */
1350 device_create_file_sf2_point(new_client, 4, 2); /* Fan2 */
1351 device_create_file_sf2_point(new_client, 1, 3); /* Fan3 */
1352 device_create_file_sf2_point(new_client, 2, 3); /* Fan3 */
1353 device_create_file_sf2_point(new_client, 3, 3); /* Fan3 */
1354 device_create_file_sf2_point(new_client, 4, 3); /* Fan3 */
1355
1356 device_create_file_sf2_level(new_client, 1, 1); /* Fan1 */
1357 device_create_file_sf2_level(new_client, 2, 1); /* Fan1 */
1358 device_create_file_sf2_level(new_client, 3, 1); /* Fan1 */
1359 device_create_file_sf2_level(new_client, 1, 2); /* Fan2 */
1360 device_create_file_sf2_level(new_client, 2, 2); /* Fan2 */
1361 device_create_file_sf2_level(new_client, 3, 2); /* Fan2 */
1362 device_create_file_sf2_level(new_client, 1, 3); /* Fan3 */
1363 device_create_file_sf2_level(new_client, 2, 3); /* Fan3 */
1364 device_create_file_sf2_level(new_client, 3, 3); /* Fan3 */
1365
1366 return 0;
1367
1368 ERROR3:
1369 if (data->lm75[0] != NULL) {
1370 i2c_detach_client(data->lm75[0]);
1371 kfree(data->lm75[0]);
1372 }
1373 if (data->lm75[1] != NULL) {
1374 i2c_detach_client(data->lm75[1]);
1375 kfree(data->lm75[1]);
1376 }
1377 ERROR2:
1378 i2c_detach_client(new_client);
1379 ERROR1:
1380 kfree(data);
1381 ERROR0:
1382 return err;
1383 }
1384
1385 static int
1386 w83792d_detach_client(struct i2c_client *client)
1387 {
1388 struct w83792d_data *data = i2c_get_clientdata(client);
1389 int err;
1390
1391 /* main client */
1392 if (data)
1393 hwmon_device_unregister(data->class_dev);
1394
1395 if ((err = i2c_detach_client(client)))
1396 return err;
1397
1398 /* main client */
1399 if (data)
1400 kfree(data);
1401 /* subclient */
1402 else
1403 kfree(client);
1404
1405 return 0;
1406 }
1407
1408 /* The SMBus locks itself, usually, but nothing may access the Winbond between
1409 bank switches. ISA access must always be locked explicitly!
1410 We ignore the W83792D BUSY flag at this moment - it could lead to deadlocks,
1411 would slow down the W83792D access and should not be necessary.
1412 There are some ugly typecasts here, but the good news is - they should
1413 nowhere else be necessary! */
1414 static int
1415 w83792d_read_value(struct i2c_client *client, u8 reg)
1416 {
1417 int res=0;
1418 res = i2c_smbus_read_byte_data(client, reg);
1419
1420 return res;
1421 }
1422
1423 static int
1424 w83792d_write_value(struct i2c_client *client, u8 reg, u8 value)
1425 {
1426 i2c_smbus_write_byte_data(client, reg, value);
1427 return 0;
1428 }
1429
1430 static void
1431 w83792d_init_client(struct i2c_client *client)
1432 {
1433 u8 temp2_cfg, temp3_cfg, vid_in_b;
1434
1435 if (init) {
1436 w83792d_write_value(client, W83792D_REG_CONFIG, 0x80);
1437 }
1438 /* Clear the bit6 of W83792D_REG_VID_IN_B(set it into 0):
1439 W83792D_REG_VID_IN_B bit6 = 0: the high/low limit of
1440 vin0/vin1 can be modified by user;
1441 W83792D_REG_VID_IN_B bit6 = 1: the high/low limit of
1442 vin0/vin1 auto-updated, can NOT be modified by user. */
1443 vid_in_b = w83792d_read_value(client, W83792D_REG_VID_IN_B);
1444 w83792d_write_value(client, W83792D_REG_VID_IN_B,
1445 vid_in_b & 0xbf);
1446
1447 temp2_cfg = w83792d_read_value(client, W83792D_REG_TEMP2_CONFIG);
1448 temp3_cfg = w83792d_read_value(client, W83792D_REG_TEMP3_CONFIG);
1449 w83792d_write_value(client, W83792D_REG_TEMP2_CONFIG,
1450 temp2_cfg & 0xe6);
1451 w83792d_write_value(client, W83792D_REG_TEMP3_CONFIG,
1452 temp3_cfg & 0xe6);
1453
1454 /* Start monitoring */
1455 w83792d_write_value(client, W83792D_REG_CONFIG,
1456 (w83792d_read_value(client,
1457 W83792D_REG_CONFIG) & 0xf7)
1458 | 0x01);
1459 }
1460
1461 static struct w83792d_data *w83792d_update_device(struct device *dev)
1462 {
1463 struct i2c_client *client = to_i2c_client(dev);
1464 struct w83792d_data *data = i2c_get_clientdata(client);
1465 int i, j;
1466 u8 reg_array_tmp[4], pwm_array_tmp[7], reg_tmp;
1467
1468 down(&data->update_lock);
1469
1470 if (time_after
1471 (jiffies - data->last_updated, (unsigned long) (HZ * 3))
1472 || time_before(jiffies, data->last_updated) || !data->valid) {
1473 dev_dbg(dev, "Starting device update\n");
1474
1475 /* Update the voltages measured value and limits */
1476 for (i = 0; i < 9; i++) {
1477 data->in[i] = w83792d_read_value(client,
1478 W83792D_REG_IN[i]);
1479 data->in_max[i] = w83792d_read_value(client,
1480 W83792D_REG_IN_MAX[i]);
1481 data->in_min[i] = w83792d_read_value(client,
1482 W83792D_REG_IN_MIN[i]);
1483 }
1484 data->low_bits[0] = w83792d_read_value(client,
1485 W83792D_REG_LOW_BITS1);
1486 data->low_bits[1] = w83792d_read_value(client,
1487 W83792D_REG_LOW_BITS2);
1488 for (i = 0; i < 7; i++) {
1489 /* Update the Fan measured value and limits */
1490 data->fan[i] = w83792d_read_value(client,
1491 W83792D_REG_FAN[i]);
1492 data->fan_min[i] = w83792d_read_value(client,
1493 W83792D_REG_FAN_MIN[i]);
1494 /* Update the PWM/DC Value and PWM/DC flag */
1495 pwm_array_tmp[i] = w83792d_read_value(client,
1496 W83792D_REG_PWM[i]);
1497 data->pwm[i] = pwm_array_tmp[i] & 0x0f;
1498 data->pwm_mode[i] = (pwm_array_tmp[i] >> 7) & 0x01;
1499 }
1500
1501 reg_tmp = w83792d_read_value(client, W83792D_REG_FAN_CFG);
1502 data->pwmenable[0] = reg_tmp & 0x03;
1503 data->pwmenable[1] = (reg_tmp>>2) & 0x03;
1504 data->pwmenable[2] = (reg_tmp>>4) & 0x03;
1505
1506 for (i = 0; i < 3; i++) {
1507 data->temp1[i] = w83792d_read_value(client,
1508 W83792D_REG_TEMP1[i]);
1509 }
1510 for (i = 0; i < 2; i++) {
1511 for (j = 0; j < 6; j++) {
1512 data->temp_add[i][j] = w83792d_read_value(
1513 client,W83792D_REG_TEMP_ADD[i][j]);
1514 }
1515 }
1516
1517 /* Update the Fan Divisor */
1518 for (i = 0; i < 4; i++) {
1519 reg_array_tmp[i] = w83792d_read_value(client,
1520 W83792D_REG_FAN_DIV[i]);
1521 }
1522 data->fan_div[0] = reg_array_tmp[0] & 0x07;
1523 data->fan_div[1] = (reg_array_tmp[0] >> 4) & 0x07;
1524 data->fan_div[2] = reg_array_tmp[1] & 0x07;
1525 data->fan_div[3] = (reg_array_tmp[1] >> 4) & 0x07;
1526 data->fan_div[4] = reg_array_tmp[2] & 0x07;
1527 data->fan_div[5] = (reg_array_tmp[2] >> 4) & 0x07;
1528 data->fan_div[6] = reg_array_tmp[3] & 0x07;
1529
1530 /* Update the realtime status */
1531 data->alarms = w83792d_read_value(client, W83792D_REG_ALARM1) +
1532 (w83792d_read_value(client, W83792D_REG_ALARM2) << 8) +
1533 (w83792d_read_value(client, W83792D_REG_ALARM3) << 16);
1534
1535 /* Update CaseOpen status and it's CLR_CHS. */
1536 data->chassis = (w83792d_read_value(client,
1537 W83792D_REG_CHASSIS) >> 5) & 0x01;
1538 data->chassis_clear = (w83792d_read_value(client,
1539 W83792D_REG_CHASSIS_CLR) >> 7) & 0x01;
1540
1541 /* Update Thermal Cruise/Smart Fan I target value */
1542 for (i = 0; i < 3; i++) {
1543 data->thermal_cruise[i] =
1544 w83792d_read_value(client,
1545 W83792D_REG_THERMAL[i]) & 0x7f;
1546 }
1547
1548 /* Update Smart Fan I/II tolerance */
1549 reg_tmp = w83792d_read_value(client, W83792D_REG_TOLERANCE[0]);
1550 data->tolerance[0] = reg_tmp & 0x0f;
1551 data->tolerance[1] = (reg_tmp >> 4) & 0x0f;
1552 data->tolerance[2] = w83792d_read_value(client,
1553 W83792D_REG_TOLERANCE[2]) & 0x0f;
1554
1555 /* Update Smart Fan II temperature points */
1556 for (i = 0; i < 3; i++) {
1557 for (j = 0; j < 4; j++) {
1558 data->sf2_points[i][j] = w83792d_read_value(
1559 client,W83792D_REG_POINTS[i][j]) & 0x7f;
1560 }
1561 }
1562
1563 /* Update Smart Fan II duty cycle levels */
1564 for (i = 0; i < 3; i++) {
1565 reg_tmp = w83792d_read_value(client,
1566 W83792D_REG_LEVELS[i][0]);
1567 data->sf2_levels[i][0] = reg_tmp & 0x0f;
1568 data->sf2_levels[i][1] = (reg_tmp >> 4) & 0x0f;
1569 reg_tmp = w83792d_read_value(client,
1570 W83792D_REG_LEVELS[i][2]);
1571 data->sf2_levels[i][2] = (reg_tmp >> 4) & 0x0f;
1572 data->sf2_levels[i][3] = reg_tmp & 0x0f;
1573 }
1574
1575 data->last_updated = jiffies;
1576 data->valid = 1;
1577 }
1578
1579 up(&data->update_lock);
1580
1581 #ifdef DEBUG
1582 w83792d_print_debug(data, dev);
1583 #endif
1584
1585 return data;
1586 }
1587
1588 #ifdef DEBUG
1589 static void w83792d_print_debug(struct w83792d_data *data, struct device *dev)
1590 {
1591 int i=0, j=0;
1592 dev_dbg(dev, "==========The following is the debug message...========\n");
1593 dev_dbg(dev, "9 set of Voltages: =====>\n");
1594 for (i=0; i<9; i++) {
1595 dev_dbg(dev, "vin[%d] is: 0x%x\n", i, data->in[i]);
1596 dev_dbg(dev, "vin[%d] max is: 0x%x\n", i, data->in_max[i]);
1597 dev_dbg(dev, "vin[%d] min is: 0x%x\n", i, data->in_min[i]);
1598 }
1599 dev_dbg(dev, "Low Bit1 is: 0x%x\n", data->low_bits[0]);
1600 dev_dbg(dev, "Low Bit2 is: 0x%x\n", data->low_bits[1]);
1601 dev_dbg(dev, "7 set of Fan Counts and Duty Cycles: =====>\n");
1602 for (i=0; i<7; i++) {
1603 dev_dbg(dev, "fan[%d] is: 0x%x\n", i, data->fan[i]);
1604 dev_dbg(dev, "fan[%d] min is: 0x%x\n", i, data->fan_min[i]);
1605 dev_dbg(dev, "pwm[%d] is: 0x%x\n", i, data->pwm[i]);
1606 dev_dbg(dev, "pwm_mode[%d] is: 0x%x\n", i, data->pwm_mode[i]);
1607 }
1608 dev_dbg(dev, "3 set of Temperatures: =====>\n");
1609 for (i=0; i<3; i++) {
1610 dev_dbg(dev, "temp1[%d] is: 0x%x\n", i, data->temp1[i]);
1611 }
1612
1613 for (i=0; i<2; i++) {
1614 for (j=0; j<6; j++) {
1615 dev_dbg(dev, "temp_add[%d][%d] is: 0x%x\n", i, j,
1616 data->temp_add[i][j]);
1617 }
1618 }
1619
1620 for (i=0; i<7; i++) {
1621 dev_dbg(dev, "fan_div[%d] is: 0x%x\n", i, data->fan_div[i]);
1622 }
1623 dev_dbg(dev, "==========End of the debug message...==================\n");
1624 dev_dbg(dev, "\n");
1625 }
1626 #endif
1627
1628 static int __init
1629 sensors_w83792d_init(void)
1630 {
1631 return i2c_add_driver(&w83792d_driver);
1632 }
1633
1634 static void __exit
1635 sensors_w83792d_exit(void)
1636 {
1637 i2c_del_driver(&w83792d_driver);
1638 }
1639
1640 MODULE_AUTHOR("Chunhao Huang @ Winbond <DZShen@Winbond.com.tw>");
1641 MODULE_DESCRIPTION("W83792AD/D driver for linux-2.6");
1642 MODULE_LICENSE("GPL");
1643
1644 module_init(sensors_w83792d_init);
1645 module_exit(sensors_w83792d_exit);
1646
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree