[PATCH] hwmon: Inline w83792d register access functions
[linux-3.10.git] / drivers / hwmon / w83792d.c
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_GPIO_EN             0x1A
197 #define W83792D_REG_CONFIG              0x40
198 #define W83792D_REG_VID_FANDIV          0x47
199 #define W83792D_REG_CHIPID              0x49
200 #define W83792D_REG_WCHIPID             0x58
201 #define W83792D_REG_CHIPMAN             0x4F
202 #define W83792D_REG_PIN                 0x4B
203 #define W83792D_REG_I2C_SUBADDR         0x4A
204
205 #define W83792D_REG_ALARM1 0xA9         /* realtime status register1 */
206 #define W83792D_REG_ALARM2 0xAA         /* realtime status register2 */
207 #define W83792D_REG_ALARM3 0xAB         /* realtime status register3 */
208 #define W83792D_REG_CHASSIS 0x42        /* Bit 5: Case Open status bit */
209 #define W83792D_REG_CHASSIS_CLR 0x44    /* Bit 7: Case Open CLR_CHS/Reset bit */
210
211 /* control in0/in1 's limit modifiability */
212 #define W83792D_REG_VID_IN_B            0x17
213
214 #define W83792D_REG_VBAT                0x5D
215 #define W83792D_REG_I2C_ADDR            0x48
216
217 /* Conversions. Rounding and limit checking is only done on the TO_REG
218    variants. Note that you should be a bit careful with which arguments
219    these macros are called: arguments may be evaluated more than once.
220    Fixing this is just not worth it. */
221 #define IN_FROM_REG(nr,val) (((nr)<=1)?(val*2): \
222                                 ((((nr)==6)||((nr)==7))?(val*6):(val*4)))
223 #define IN_TO_REG(nr,val) (((nr)<=1)?(val/2): \
224                                 ((((nr)==6)||((nr)==7))?(val/6):(val/4)))
225
226 static inline u8
227 FAN_TO_REG(long rpm, int div)
228 {
229         if (rpm == 0)
230                 return 255;
231         rpm = SENSORS_LIMIT(rpm, 1, 1000000);
232         return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
233 }
234
235 #define FAN_FROM_REG(val,div)   ((val) == 0   ? -1 : \
236                                 ((val) == 255 ? 0 : \
237                                                 1350000 / ((val) * (div))))
238
239 /* for temp1 */
240 #define TEMP1_TO_REG(val)       (SENSORS_LIMIT(((val) < 0 ? (val)+0x100*1000 \
241                                         : (val)) / 1000, 0, 0xff))
242 #define TEMP1_FROM_REG(val)     (((val) & 0x80 ? (val)-0x100 : (val)) * 1000)
243 /* for temp2 and temp3, because they need addtional resolution */
244 #define TEMP_ADD_FROM_REG(val1, val2) \
245         ((((val1) & 0x80 ? (val1)-0x100 \
246                 : (val1)) * 1000) + ((val2 & 0x80) ? 500 : 0))
247 #define TEMP_ADD_TO_REG_HIGH(val) \
248         (SENSORS_LIMIT(((val) < 0 ? (val)+0x100*1000 \
249                         : (val)) / 1000, 0, 0xff))
250 #define TEMP_ADD_TO_REG_LOW(val)        ((val%1000) ? 0x80 : 0x00)
251
252 #define PWM_FROM_REG(val)               (val)
253 #define PWM_TO_REG(val)                 (SENSORS_LIMIT((val),0,255))
254 #define DIV_FROM_REG(val)               (1 << (val))
255
256 static inline u8
257 DIV_TO_REG(long val)
258 {
259         int i;
260         val = SENSORS_LIMIT(val, 1, 128) >> 1;
261         for (i = 0; i < 7; i++) {
262                 if (val == 0)
263                         break;
264                 val >>= 1;
265         }
266         return ((u8) i);
267 }
268
269 struct w83792d_data {
270         struct i2c_client client;
271         struct class_device *class_dev;
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         u16 low_bits;           /* Additional resolution to voltage in6-0 */
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 static struct w83792d_data *w83792d_update_device(struct device *dev);
307
308 #ifdef DEBUG
309 static void w83792d_print_debug(struct w83792d_data *data, struct device *dev);
310 #endif
311
312 static void w83792d_init_client(struct i2c_client *client);
313
314 static struct i2c_driver w83792d_driver = {
315         .driver = {
316                 .name = "w83792d",
317         },
318         .attach_adapter = w83792d_attach_adapter,
319         .detach_client = w83792d_detach_client,
320 };
321
322 static inline long in_count_from_reg(int nr, struct w83792d_data *data)
323 {
324         /* in7 and in8 do not have low bits, but the formula still works */
325         return ((data->in[nr] << 2) | ((data->low_bits >> (2 * nr)) & 0x03));
326 }
327
328 /* The SMBus locks itself. The Winbond W83792D chip has a bank register,
329    but the driver only accesses registers in bank 0, so we don't have
330    to switch banks and lock access between switches. */
331 static inline int w83792d_read_value(struct i2c_client *client, u8 reg)
332 {
333         return i2c_smbus_read_byte_data(client, reg);
334 }
335
336 static inline int
337 w83792d_write_value(struct i2c_client *client, u8 reg, u8 value)
338 {
339         return i2c_smbus_write_byte_data(client, reg, value);
340 }
341
342 /* following are the sysfs callback functions */
343 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
344                         char *buf)
345 {
346         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
347         int nr = sensor_attr->index;
348         struct w83792d_data *data = w83792d_update_device(dev);
349         return sprintf(buf,"%ld\n", IN_FROM_REG(nr,(in_count_from_reg(nr, data))));
350 }
351
352 #define show_in_reg(reg) \
353 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
354                         char *buf) \
355 { \
356         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
357         int nr = sensor_attr->index; \
358         struct w83792d_data *data = w83792d_update_device(dev); \
359         return sprintf(buf,"%ld\n", (long)(IN_FROM_REG(nr, (data->reg[nr])*4))); \
360 }
361
362 show_in_reg(in_min);
363 show_in_reg(in_max);
364
365 #define store_in_reg(REG, reg) \
366 static ssize_t store_in_##reg (struct device *dev, \
367                                 struct device_attribute *attr, \
368                                 const char *buf, size_t count) \
369 { \
370         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
371         int nr = sensor_attr->index; \
372         struct i2c_client *client = to_i2c_client(dev); \
373         struct w83792d_data *data = i2c_get_clientdata(client); \
374         u32 val; \
375          \
376         val = simple_strtoul(buf, NULL, 10); \
377         data->in_##reg[nr] = SENSORS_LIMIT(IN_TO_REG(nr, val)/4, 0, 255); \
378         w83792d_write_value(client, W83792D_REG_IN_##REG[nr], data->in_##reg[nr]); \
379          \
380         return count; \
381 }
382 store_in_reg(MIN, min);
383 store_in_reg(MAX, max);
384
385 #define sysfs_in_reg(offset) \
386 static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, show_in, \
387                                 NULL, offset); \
388 static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
389                                 show_in_min, store_in_min, offset); \
390 static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
391                                 show_in_max, store_in_max, offset);
392
393 sysfs_in_reg(0);
394 sysfs_in_reg(1);
395 sysfs_in_reg(2);
396 sysfs_in_reg(3);
397 sysfs_in_reg(4);
398 sysfs_in_reg(5);
399 sysfs_in_reg(6);
400 sysfs_in_reg(7);
401 sysfs_in_reg(8);
402
403 #define device_create_file_in(client, offset) \
404 do { \
405 device_create_file(&client->dev, &sensor_dev_attr_in##offset##_input.dev_attr); \
406 device_create_file(&client->dev, &sensor_dev_attr_in##offset##_max.dev_attr); \
407 device_create_file(&client->dev, &sensor_dev_attr_in##offset##_min.dev_attr); \
408 } while (0)
409
410 #define show_fan_reg(reg) \
411 static ssize_t show_##reg (struct device *dev, struct device_attribute *attr, \
412                         char *buf) \
413 { \
414         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
415         int nr = sensor_attr->index - 1; \
416         struct w83792d_data *data = w83792d_update_device(dev); \
417         return sprintf(buf,"%d\n", \
418                 FAN_FROM_REG(data->reg[nr], DIV_FROM_REG(data->fan_div[nr]))); \
419 }
420
421 show_fan_reg(fan);
422 show_fan_reg(fan_min);
423
424 static ssize_t
425 store_fan_min(struct device *dev, struct device_attribute *attr,
426                 const char *buf, size_t count)
427 {
428         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
429         int nr = sensor_attr->index - 1;
430         struct i2c_client *client = to_i2c_client(dev);
431         struct w83792d_data *data = i2c_get_clientdata(client);
432         u32 val;
433
434         val = simple_strtoul(buf, NULL, 10);
435         data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
436         w83792d_write_value(client, W83792D_REG_FAN_MIN[nr],
437                                 data->fan_min[nr]);
438
439         return count;
440 }
441
442 static ssize_t
443 show_fan_div(struct device *dev, struct device_attribute *attr,
444                 char *buf)
445 {
446         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
447         int nr = sensor_attr->index;
448         struct w83792d_data *data = w83792d_update_device(dev);
449         return sprintf(buf, "%u\n", DIV_FROM_REG(data->fan_div[nr - 1]));
450 }
451
452 /* Note: we save and restore the fan minimum here, because its value is
453    determined in part by the fan divisor.  This follows the principle of
454    least suprise; the user doesn't expect the fan minimum to change just
455    because the divisor changed. */
456 static ssize_t
457 store_fan_div(struct device *dev, struct device_attribute *attr,
458                 const char *buf, size_t count)
459 {
460         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
461         int nr = sensor_attr->index - 1;
462         struct i2c_client *client = to_i2c_client(dev);
463         struct w83792d_data *data = i2c_get_clientdata(client);
464         unsigned long min;
465         /*u8 reg;*/
466         u8 fan_div_reg = 0;
467         u8 tmp_fan_div;
468
469         /* Save fan_min */
470         min = FAN_FROM_REG(data->fan_min[nr],
471                            DIV_FROM_REG(data->fan_div[nr]));
472
473         data->fan_div[nr] = DIV_TO_REG(simple_strtoul(buf, NULL, 10));
474
475         fan_div_reg = w83792d_read_value(client, W83792D_REG_FAN_DIV[nr >> 1]);
476         fan_div_reg &= (nr & 0x01) ? 0x8f : 0xf8;
477         tmp_fan_div = (nr & 0x01) ? (((data->fan_div[nr]) << 4) & 0x70)
478                                         : ((data->fan_div[nr]) & 0x07);
479         w83792d_write_value(client, W83792D_REG_FAN_DIV[nr >> 1],
480                                         fan_div_reg | tmp_fan_div);
481
482         /* Restore fan_min */
483         data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
484         w83792d_write_value(client, W83792D_REG_FAN_MIN[nr], data->fan_min[nr]);
485
486         return count;
487 }
488
489 #define sysfs_fan(offset) \
490 static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan, NULL, \
491                                 offset); \
492 static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \
493                                 show_fan_div, store_fan_div, offset); \
494 static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
495                                 show_fan_min, store_fan_min, offset);
496
497 sysfs_fan(1);
498 sysfs_fan(2);
499 sysfs_fan(3);
500 sysfs_fan(4);
501 sysfs_fan(5);
502 sysfs_fan(6);
503 sysfs_fan(7);
504
505 #define device_create_file_fan(client, offset) \
506 do { \
507 device_create_file(&client->dev, &sensor_dev_attr_fan##offset##_input.dev_attr); \
508 device_create_file(&client->dev, &sensor_dev_attr_fan##offset##_div.dev_attr); \
509 device_create_file(&client->dev, &sensor_dev_attr_fan##offset##_min.dev_attr); \
510 } while (0)
511
512
513 /* read/write the temperature1, includes measured value and limits */
514
515 static ssize_t show_temp1(struct device *dev, struct device_attribute *attr,
516                                 char *buf)
517 {
518         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
519         int nr = sensor_attr->index;
520         struct w83792d_data *data = w83792d_update_device(dev);
521         return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp1[nr]));
522 }
523
524 static ssize_t store_temp1(struct device *dev, struct device_attribute *attr,
525                                 const char *buf, size_t count)
526 {
527         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
528         int nr = sensor_attr->index;
529         struct i2c_client *client = to_i2c_client(dev);
530         struct w83792d_data *data = i2c_get_clientdata(client);
531         s32 val;
532
533         val = simple_strtol(buf, NULL, 10);
534
535         data->temp1[nr] = TEMP1_TO_REG(val);
536         w83792d_write_value(client, W83792D_REG_TEMP1[nr],
537                 data->temp1[nr]);
538
539         return count;
540 }
541
542
543 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp1, NULL, 0);
544 static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR, show_temp1,
545                                 store_temp1, 1);
546 static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, show_temp1,
547                                 store_temp1, 2);
548
549 #define device_create_file_temp1(client) \
550 do { \
551 device_create_file(&client->dev, &sensor_dev_attr_temp1_input.dev_attr); \
552 device_create_file(&client->dev, &sensor_dev_attr_temp1_max.dev_attr); \
553 device_create_file(&client->dev, &sensor_dev_attr_temp1_max_hyst.dev_attr); \
554 } while (0)
555
556
557 /* read/write the temperature2-3, includes measured value and limits */
558
559 static ssize_t show_temp23(struct device *dev, struct device_attribute *attr,
560                                 char *buf)
561 {
562         struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
563         int nr = sensor_attr->nr;
564         int index = sensor_attr->index;
565         struct w83792d_data *data = w83792d_update_device(dev);
566         return sprintf(buf,"%ld\n",
567                 (long)TEMP_ADD_FROM_REG(data->temp_add[nr][index],
568                         data->temp_add[nr][index+1]));
569 }
570
571 static ssize_t store_temp23(struct device *dev, struct device_attribute *attr,
572                                 const char *buf, size_t count)
573 {
574         struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
575         int nr = sensor_attr->nr;
576         int index = sensor_attr->index;
577         struct i2c_client *client = to_i2c_client(dev);
578         struct w83792d_data *data = i2c_get_clientdata(client);
579         s32 val;
580
581         val = simple_strtol(buf, NULL, 10);
582
583         data->temp_add[nr][index] = TEMP_ADD_TO_REG_HIGH(val);
584         data->temp_add[nr][index+1] = TEMP_ADD_TO_REG_LOW(val);
585         w83792d_write_value(client, W83792D_REG_TEMP_ADD[nr][index],
586                 data->temp_add[nr][index]);
587         w83792d_write_value(client, W83792D_REG_TEMP_ADD[nr][index+1],
588                 data->temp_add[nr][index+1]);
589
590         return count;
591 }
592
593 #define sysfs_temp23(name,idx) \
594 static SENSOR_DEVICE_ATTR_2(name##_input, S_IRUGO, show_temp23, NULL, \
595                                 idx, 0); \
596 static SENSOR_DEVICE_ATTR_2(name##_max, S_IRUGO | S_IWUSR, \
597                                 show_temp23, store_temp23, idx, 2); \
598 static SENSOR_DEVICE_ATTR_2(name##_max_hyst, S_IRUGO | S_IWUSR, \
599                                 show_temp23, store_temp23, idx, 4);
600
601 sysfs_temp23(temp2,0)
602 sysfs_temp23(temp3,1)
603
604 #define device_create_file_temp_add(client, offset) \
605 do { \
606 device_create_file(&client->dev, &sensor_dev_attr_temp##offset##_input.dev_attr); \
607 device_create_file(&client->dev, &sensor_dev_attr_temp##offset##_max.dev_attr); \
608 device_create_file(&client->dev, \
609 &sensor_dev_attr_temp##offset##_max_hyst.dev_attr); \
610 } while (0)
611
612
613 /* get reatime status of all sensors items: voltage, temp, fan */
614 static ssize_t
615 show_alarms_reg(struct device *dev, struct device_attribute *attr, char *buf)
616 {
617         struct w83792d_data *data = w83792d_update_device(dev);
618         return sprintf(buf, "%d\n", data->alarms);
619 }
620
621 static
622 DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
623 #define device_create_file_alarms(client) \
624 device_create_file(&client->dev, &dev_attr_alarms);
625
626
627
628 static ssize_t
629 show_pwm(struct device *dev, struct device_attribute *attr,
630                 char *buf)
631 {
632         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
633         int nr = sensor_attr->index;
634         struct w83792d_data *data = w83792d_update_device(dev);
635         return sprintf(buf, "%ld\n", (long) PWM_FROM_REG(data->pwm[nr-1]));
636 }
637
638 static ssize_t
639 show_pwmenable(struct device *dev, struct device_attribute *attr,
640                         char *buf)
641 {
642         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
643         int nr = sensor_attr->index - 1;
644         struct w83792d_data *data = w83792d_update_device(dev);
645         long pwm_enable_tmp = 1;
646
647         switch (data->pwmenable[nr]) {
648         case 0:
649                 pwm_enable_tmp = 1; /* manual mode */
650                 break;
651         case 1:
652                 pwm_enable_tmp = 3; /*thermal cruise/Smart Fan I */
653                 break;
654         case 2:
655                 pwm_enable_tmp = 2; /* Smart Fan II */
656                 break;
657         }
658
659         return sprintf(buf, "%ld\n", pwm_enable_tmp);
660 }
661
662 static ssize_t
663 store_pwm(struct device *dev, struct device_attribute *attr,
664                 const char *buf, size_t count)
665 {
666         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
667         int nr = sensor_attr->index - 1;
668         struct i2c_client *client = to_i2c_client(dev);
669         struct w83792d_data *data = i2c_get_clientdata(client);
670         u32 val;
671
672         val = simple_strtoul(buf, NULL, 10);
673         data->pwm[nr] = PWM_TO_REG(val);
674         w83792d_write_value(client, W83792D_REG_PWM[nr], data->pwm[nr]);
675
676         return count;
677 }
678
679 static ssize_t
680 store_pwmenable(struct device *dev, struct device_attribute *attr,
681                         const char *buf, size_t count)
682 {
683         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
684         int nr = sensor_attr->index - 1;
685         struct i2c_client *client = to_i2c_client(dev);
686         struct w83792d_data *data = i2c_get_clientdata(client);
687         u32 val;
688         u8 fan_cfg_tmp, cfg1_tmp, cfg2_tmp, cfg3_tmp, cfg4_tmp;
689
690         val = simple_strtoul(buf, NULL, 10);
691         switch (val) {
692         case 1:
693                 data->pwmenable[nr] = 0; /* manual mode */
694                 break;
695         case 2:
696                 data->pwmenable[nr] = 2; /* Smart Fan II */
697                 break;
698         case 3:
699                 data->pwmenable[nr] = 1; /* thermal cruise/Smart Fan I */
700                 break;
701         default:
702                 return -EINVAL;
703         }
704         cfg1_tmp = data->pwmenable[0];
705         cfg2_tmp = (data->pwmenable[1]) << 2;
706         cfg3_tmp = (data->pwmenable[2]) << 4;
707         cfg4_tmp = w83792d_read_value(client,W83792D_REG_FAN_CFG) & 0xc0;
708         fan_cfg_tmp = ((cfg4_tmp | cfg3_tmp) | cfg2_tmp) | cfg1_tmp;
709         w83792d_write_value(client, W83792D_REG_FAN_CFG, fan_cfg_tmp);
710
711         return count;
712 }
713
714 #define sysfs_pwm(offset) \
715 static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
716                                 show_pwm, store_pwm, offset); \
717 static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \
718                                 show_pwmenable, store_pwmenable, offset); \
719
720 sysfs_pwm(1);
721 sysfs_pwm(2);
722 sysfs_pwm(3);
723
724
725 #define device_create_file_pwm(client, offset) \
726 do { \
727 device_create_file(&client->dev, &sensor_dev_attr_pwm##offset.dev_attr); \
728 } while (0)
729
730 #define device_create_file_pwmenable(client, offset) \
731 do { \
732 device_create_file(&client->dev, &sensor_dev_attr_pwm##offset##_enable.dev_attr); \
733 } while (0)
734
735
736 static ssize_t
737 show_pwm_mode(struct device *dev, struct device_attribute *attr,
738                         char *buf)
739 {
740         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
741         int nr = sensor_attr->index;
742         struct w83792d_data *data = w83792d_update_device(dev);
743         return sprintf(buf, "%d\n", data->pwm_mode[nr-1]);
744 }
745
746 static ssize_t
747 store_pwm_mode(struct device *dev, struct device_attribute *attr,
748                         const char *buf, size_t count)
749 {
750         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
751         int nr = sensor_attr->index - 1;
752         struct i2c_client *client = to_i2c_client(dev);
753         struct w83792d_data *data = i2c_get_clientdata(client);
754         u32 val;
755         u8 pwm_mode_mask = 0;
756
757         val = simple_strtoul(buf, NULL, 10);
758         data->pwm_mode[nr] = SENSORS_LIMIT(val, 0, 1);
759         pwm_mode_mask = w83792d_read_value(client,
760                 W83792D_REG_PWM[nr]) & 0x7f;
761         w83792d_write_value(client, W83792D_REG_PWM[nr],
762                 ((data->pwm_mode[nr]) << 7) | pwm_mode_mask);
763
764         return count;
765 }
766
767 #define sysfs_pwm_mode(offset) \
768 static SENSOR_DEVICE_ATTR(pwm##offset##_mode, S_IRUGO | S_IWUSR, \
769                                 show_pwm_mode, store_pwm_mode, offset);
770
771 sysfs_pwm_mode(1);
772 sysfs_pwm_mode(2);
773 sysfs_pwm_mode(3);
774
775 #define device_create_file_pwm_mode(client, offset) \
776 do { \
777 device_create_file(&client->dev, &sensor_dev_attr_pwm##offset##_mode.dev_attr); \
778 } while (0)
779
780
781 static ssize_t
782 show_regs_chassis(struct device *dev, struct device_attribute *attr,
783                         char *buf)
784 {
785         struct w83792d_data *data = w83792d_update_device(dev);
786         return sprintf(buf, "%d\n", data->chassis);
787 }
788
789 static DEVICE_ATTR(chassis, S_IRUGO, show_regs_chassis, NULL);
790
791 #define device_create_file_chassis(client) \
792 do { \
793 device_create_file(&client->dev, &dev_attr_chassis); \
794 } while (0)
795
796
797 static ssize_t
798 show_chassis_clear(struct device *dev, struct device_attribute *attr, char *buf)
799 {
800         struct w83792d_data *data = w83792d_update_device(dev);
801         return sprintf(buf, "%d\n", data->chassis_clear);
802 }
803
804 static ssize_t
805 store_chassis_clear(struct device *dev, struct device_attribute *attr,
806                         const char *buf, size_t count)
807 {
808         struct i2c_client *client = to_i2c_client(dev);
809         struct w83792d_data *data = i2c_get_clientdata(client);
810         u32 val;
811         u8 temp1 = 0, temp2 = 0;
812
813         val = simple_strtoul(buf, NULL, 10);
814
815         data->chassis_clear = SENSORS_LIMIT(val, 0 ,1);
816         temp1 = ((data->chassis_clear) << 7) & 0x80;
817         temp2 = w83792d_read_value(client,
818                 W83792D_REG_CHASSIS_CLR) & 0x7f;
819         w83792d_write_value(client, W83792D_REG_CHASSIS_CLR, temp1 | temp2);
820
821         return count;
822 }
823
824 static DEVICE_ATTR(chassis_clear, S_IRUGO | S_IWUSR,
825                 show_chassis_clear, store_chassis_clear);
826
827 #define device_create_file_chassis_clear(client) \
828 do { \
829 device_create_file(&client->dev, &dev_attr_chassis_clear); \
830 } while (0)
831
832
833
834 /* For Smart Fan I / Thermal Cruise */
835 static ssize_t
836 show_thermal_cruise(struct device *dev, struct device_attribute *attr,
837                         char *buf)
838 {
839         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
840         int nr = sensor_attr->index;
841         struct w83792d_data *data = w83792d_update_device(dev);
842         return sprintf(buf, "%ld\n", (long)data->thermal_cruise[nr-1]);
843 }
844
845 static ssize_t
846 store_thermal_cruise(struct device *dev, struct device_attribute *attr,
847                         const char *buf, size_t count)
848 {
849         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
850         int nr = sensor_attr->index - 1;
851         struct i2c_client *client = to_i2c_client(dev);
852         struct w83792d_data *data = i2c_get_clientdata(client);
853         u32 val;
854         u8 target_tmp=0, target_mask=0;
855
856         val = simple_strtoul(buf, NULL, 10);
857         target_tmp = val;
858         target_tmp = target_tmp & 0x7f;
859         target_mask = w83792d_read_value(client, W83792D_REG_THERMAL[nr]) & 0x80;
860         data->thermal_cruise[nr] = SENSORS_LIMIT(target_tmp, 0, 255);
861         w83792d_write_value(client, W83792D_REG_THERMAL[nr],
862                 (data->thermal_cruise[nr]) | target_mask);
863
864         return count;
865 }
866
867 #define sysfs_thermal_cruise(offset) \
868 static SENSOR_DEVICE_ATTR(thermal_cruise##offset, S_IRUGO | S_IWUSR, \
869                         show_thermal_cruise, store_thermal_cruise, offset);
870
871 sysfs_thermal_cruise(1);
872 sysfs_thermal_cruise(2);
873 sysfs_thermal_cruise(3);
874
875 #define device_create_file_thermal_cruise(client, offset) \
876 do { \
877 device_create_file(&client->dev, \
878 &sensor_dev_attr_thermal_cruise##offset.dev_attr); \
879 } while (0)
880
881
882 /* For Smart Fan I/Thermal Cruise and Smart Fan II */
883 static ssize_t
884 show_tolerance(struct device *dev, struct device_attribute *attr,
885                 char *buf)
886 {
887         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
888         int nr = sensor_attr->index;
889         struct w83792d_data *data = w83792d_update_device(dev);
890         return sprintf(buf, "%ld\n", (long)data->tolerance[nr-1]);
891 }
892
893 static ssize_t
894 store_tolerance(struct device *dev, struct device_attribute *attr,
895                 const char *buf, size_t count)
896 {
897         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
898         int nr = sensor_attr->index - 1;
899         struct i2c_client *client = to_i2c_client(dev);
900         struct w83792d_data *data = i2c_get_clientdata(client);
901         u32 val;
902         u8 tol_tmp, tol_mask;
903
904         val = simple_strtoul(buf, NULL, 10);
905         tol_mask = w83792d_read_value(client,
906                 W83792D_REG_TOLERANCE[nr]) & ((nr == 1) ? 0x0f : 0xf0);
907         tol_tmp = SENSORS_LIMIT(val, 0, 15);
908         tol_tmp &= 0x0f;
909         data->tolerance[nr] = tol_tmp;
910         if (nr == 1) {
911                 tol_tmp <<= 4;
912         }
913         w83792d_write_value(client, W83792D_REG_TOLERANCE[nr],
914                 tol_mask | tol_tmp);
915
916         return count;
917 }
918
919 #define sysfs_tolerance(offset) \
920 static SENSOR_DEVICE_ATTR(tolerance##offset, S_IRUGO | S_IWUSR, \
921                                 show_tolerance, store_tolerance, offset);
922
923 sysfs_tolerance(1);
924 sysfs_tolerance(2);
925 sysfs_tolerance(3);
926
927 #define device_create_file_tolerance(client, offset) \
928 do { \
929 device_create_file(&client->dev, &sensor_dev_attr_tolerance##offset.dev_attr); \
930 } while (0)
931
932
933 /* For Smart Fan II */
934 static ssize_t
935 show_sf2_point(struct device *dev, struct device_attribute *attr,
936                 char *buf)
937 {
938         struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
939         int nr = sensor_attr->nr;
940         int index = sensor_attr->index;
941         struct w83792d_data *data = w83792d_update_device(dev);
942         return sprintf(buf, "%ld\n", (long)data->sf2_points[index-1][nr-1]);
943 }
944
945 static ssize_t
946 store_sf2_point(struct device *dev, struct device_attribute *attr,
947                 const char *buf, size_t count)
948 {
949         struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
950         int nr = sensor_attr->nr - 1;
951         int index = sensor_attr->index - 1;
952         struct i2c_client *client = to_i2c_client(dev);
953         struct w83792d_data *data = i2c_get_clientdata(client);
954         u32 val;
955         u8 mask_tmp = 0;
956
957         val = simple_strtoul(buf, NULL, 10);
958         data->sf2_points[index][nr] = SENSORS_LIMIT(val, 0, 127);
959         mask_tmp = w83792d_read_value(client,
960                                         W83792D_REG_POINTS[index][nr]) & 0x80;
961         w83792d_write_value(client, W83792D_REG_POINTS[index][nr],
962                 mask_tmp|data->sf2_points[index][nr]);
963
964         return count;
965 }
966
967 #define sysfs_sf2_point(offset, index) \
968 static SENSOR_DEVICE_ATTR_2(sf2_point##offset##_fan##index, S_IRUGO | S_IWUSR, \
969                                 show_sf2_point, store_sf2_point, offset, index);
970
971 sysfs_sf2_point(1, 1);  /* Fan1 */
972 sysfs_sf2_point(2, 1);  /* Fan1 */
973 sysfs_sf2_point(3, 1);  /* Fan1 */
974 sysfs_sf2_point(4, 1);  /* Fan1 */
975 sysfs_sf2_point(1, 2);  /* Fan2 */
976 sysfs_sf2_point(2, 2);  /* Fan2 */
977 sysfs_sf2_point(3, 2);  /* Fan2 */
978 sysfs_sf2_point(4, 2);  /* Fan2 */
979 sysfs_sf2_point(1, 3);  /* Fan3 */
980 sysfs_sf2_point(2, 3);  /* Fan3 */
981 sysfs_sf2_point(3, 3);  /* Fan3 */
982 sysfs_sf2_point(4, 3);  /* Fan3 */
983
984 #define device_create_file_sf2_point(client, offset, index) \
985 do { \
986 device_create_file(&client->dev, \
987 &sensor_dev_attr_sf2_point##offset##_fan##index.dev_attr); \
988 } while (0)
989
990
991 static ssize_t
992 show_sf2_level(struct device *dev, struct device_attribute *attr,
993                 char *buf)
994 {
995         struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
996         int nr = sensor_attr->nr;
997         int index = sensor_attr->index;
998         struct w83792d_data *data = w83792d_update_device(dev);
999         return sprintf(buf, "%d\n",
1000                         (((data->sf2_levels[index-1][nr]) * 100) / 15));
1001 }
1002
1003 static ssize_t
1004 store_sf2_level(struct device *dev, struct device_attribute *attr,
1005                 const char *buf, size_t count)
1006 {
1007         struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
1008         int nr = sensor_attr->nr;
1009         int index = sensor_attr->index - 1;
1010         struct i2c_client *client = to_i2c_client(dev);
1011         struct w83792d_data *data = i2c_get_clientdata(client);
1012         u32 val;
1013         u8 mask_tmp=0, level_tmp=0;
1014
1015         val = simple_strtoul(buf, NULL, 10);
1016         data->sf2_levels[index][nr] = SENSORS_LIMIT((val * 15) / 100, 0, 15);
1017         mask_tmp = w83792d_read_value(client, W83792D_REG_LEVELS[index][nr])
1018                 & ((nr==3) ? 0xf0 : 0x0f);
1019         if (nr==3) {
1020                 level_tmp = data->sf2_levels[index][nr];
1021         } else {
1022                 level_tmp = data->sf2_levels[index][nr] << 4;
1023         }
1024         w83792d_write_value(client, W83792D_REG_LEVELS[index][nr], level_tmp | mask_tmp);
1025
1026         return count;
1027 }
1028
1029 #define sysfs_sf2_level(offset, index) \
1030 static SENSOR_DEVICE_ATTR_2(sf2_level##offset##_fan##index, S_IRUGO | S_IWUSR, \
1031                                 show_sf2_level, store_sf2_level, offset, index);
1032
1033 sysfs_sf2_level(1, 1);  /* Fan1 */
1034 sysfs_sf2_level(2, 1);  /* Fan1 */
1035 sysfs_sf2_level(3, 1);  /* Fan1 */
1036 sysfs_sf2_level(1, 2);  /* Fan2 */
1037 sysfs_sf2_level(2, 2);  /* Fan2 */
1038 sysfs_sf2_level(3, 2);  /* Fan2 */
1039 sysfs_sf2_level(1, 3);  /* Fan3 */
1040 sysfs_sf2_level(2, 3);  /* Fan3 */
1041 sysfs_sf2_level(3, 3);  /* Fan3 */
1042
1043 #define device_create_file_sf2_level(client, offset, index) \
1044 do { \
1045 device_create_file(&client->dev, \
1046 &sensor_dev_attr_sf2_level##offset##_fan##index.dev_attr); \
1047 } while (0)
1048
1049
1050 /* This function is called when:
1051      * w83792d_driver is inserted (when this module is loaded), for each
1052        available adapter
1053      * when a new adapter is inserted (and w83792d_driver is still present) */
1054 static int
1055 w83792d_attach_adapter(struct i2c_adapter *adapter)
1056 {
1057         if (!(adapter->class & I2C_CLASS_HWMON))
1058                 return 0;
1059         return i2c_probe(adapter, &addr_data, w83792d_detect);
1060 }
1061
1062
1063 static int
1064 w83792d_create_subclient(struct i2c_adapter *adapter,
1065                                 struct i2c_client *new_client, int addr,
1066                                 struct i2c_client **sub_cli)
1067 {
1068         int err;
1069         struct i2c_client *sub_client;
1070
1071         (*sub_cli) = sub_client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
1072         if (!(sub_client)) {
1073                 return -ENOMEM;
1074         }
1075         sub_client->addr = 0x48 + addr;
1076         i2c_set_clientdata(sub_client, NULL);
1077         sub_client->adapter = adapter;
1078         sub_client->driver = &w83792d_driver;
1079         sub_client->flags = 0;
1080         strlcpy(sub_client->name, "w83792d subclient", I2C_NAME_SIZE);
1081         if ((err = i2c_attach_client(sub_client))) {
1082                 dev_err(&new_client->dev, "subclient registration "
1083                         "at address 0x%x failed\n", sub_client->addr);
1084                 kfree(sub_client);
1085                 return err;
1086         }
1087         return 0;
1088 }
1089
1090
1091 static int
1092 w83792d_detect_subclients(struct i2c_adapter *adapter, int address, int kind,
1093                 struct i2c_client *new_client)
1094 {
1095         int i, id, err;
1096         u8 val;
1097         struct w83792d_data *data = i2c_get_clientdata(new_client);
1098
1099         id = i2c_adapter_id(adapter);
1100         if (force_subclients[0] == id && force_subclients[1] == address) {
1101                 for (i = 2; i <= 3; i++) {
1102                         if (force_subclients[i] < 0x48 ||
1103                             force_subclients[i] > 0x4f) {
1104                                 dev_err(&new_client->dev, "invalid subclient "
1105                                         "address %d; must be 0x48-0x4f\n",
1106                                         force_subclients[i]);
1107                                 err = -ENODEV;
1108                                 goto ERROR_SC_0;
1109                         }
1110                 }
1111                 w83792d_write_value(new_client, W83792D_REG_I2C_SUBADDR,
1112                                         (force_subclients[2] & 0x07) |
1113                                         ((force_subclients[3] & 0x07) << 4));
1114         }
1115
1116         val = w83792d_read_value(new_client, W83792D_REG_I2C_SUBADDR);
1117         if (!(val & 0x08)) {
1118                 err = w83792d_create_subclient(adapter, new_client, val & 0x7,
1119                                                 &data->lm75[0]);
1120                 if (err < 0)
1121                         goto ERROR_SC_0;
1122         }
1123         if (!(val & 0x80)) {
1124                 if ((data->lm75[0] != NULL) &&
1125                         ((val & 0x7) == ((val >> 4) & 0x7))) {
1126                         dev_err(&new_client->dev, "duplicate addresses 0x%x, "
1127                                 "use force_subclient\n", data->lm75[0]->addr);
1128                         err = -ENODEV;
1129                         goto ERROR_SC_1;
1130                 }
1131                 err = w83792d_create_subclient(adapter, new_client,
1132                                                 (val >> 4) & 0x7, &data->lm75[1]);
1133                 if (err < 0)
1134                         goto ERROR_SC_1;
1135         }
1136
1137         return 0;
1138
1139 /* Undo inits in case of errors */
1140
1141 ERROR_SC_1:
1142         if (data->lm75[0] != NULL) {
1143                 i2c_detach_client(data->lm75[0]);
1144                 kfree(data->lm75[0]);
1145         }
1146 ERROR_SC_0:
1147         return err;
1148 }
1149
1150
1151 static int
1152 w83792d_detect(struct i2c_adapter *adapter, int address, int kind)
1153 {
1154         int i = 0, val1 = 0, val2;
1155         struct i2c_client *new_client;
1156         struct w83792d_data *data;
1157         int err = 0;
1158         const char *client_name = "";
1159
1160         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
1161                 goto ERROR0;
1162         }
1163
1164         /* OK. For now, we presume we have a valid client. We now create the
1165            client structure, even though we cannot fill it completely yet.
1166            But it allows us to access w83792d_{read,write}_value. */
1167
1168         if (!(data = kzalloc(sizeof(struct w83792d_data), GFP_KERNEL))) {
1169                 err = -ENOMEM;
1170                 goto ERROR0;
1171         }
1172
1173         new_client = &data->client;
1174         i2c_set_clientdata(new_client, data);
1175         new_client->addr = address;
1176         new_client->adapter = adapter;
1177         new_client->driver = &w83792d_driver;
1178         new_client->flags = 0;
1179
1180         /* Now, we do the remaining detection. */
1181
1182         /* The w83792d may be stuck in some other bank than bank 0. This may
1183            make reading other information impossible. Specify a force=... or
1184            force_*=... parameter, and the Winbond will be reset to the right
1185            bank. */
1186         if (kind < 0) {
1187                 if (w83792d_read_value(new_client, W83792D_REG_CONFIG) & 0x80) {
1188                         dev_warn(&new_client->dev, "Detection failed at step "
1189                                 "3\n");
1190                         goto ERROR1;
1191                 }
1192                 val1 = w83792d_read_value(new_client, W83792D_REG_BANK);
1193                 val2 = w83792d_read_value(new_client, W83792D_REG_CHIPMAN);
1194                 /* Check for Winbond ID if in bank 0 */
1195                 if (!(val1 & 0x07)) {  /* is Bank0 */
1196                         if (((!(val1 & 0x80)) && (val2 != 0xa3)) ||
1197                              ((val1 & 0x80) && (val2 != 0x5c))) {
1198                                 goto ERROR1;
1199                         }
1200                 }
1201                 /* If Winbond chip, address of chip and W83792D_REG_I2C_ADDR
1202                    should match */
1203                 if (w83792d_read_value(new_client,
1204                                         W83792D_REG_I2C_ADDR) != address) {
1205                         dev_warn(&new_client->dev, "Detection failed "
1206                                 "at step 5\n");
1207                         goto ERROR1;
1208                 }
1209         }
1210
1211         /* We have either had a force parameter, or we have already detected the
1212            Winbond. Put it now into bank 0 and Vendor ID High Byte */
1213         w83792d_write_value(new_client,
1214                             W83792D_REG_BANK,
1215                             (w83792d_read_value(new_client,
1216                                 W83792D_REG_BANK) & 0x78) | 0x80);
1217
1218         /* Determine the chip type. */
1219         if (kind <= 0) {
1220                 /* get vendor ID */
1221                 val2 = w83792d_read_value(new_client, W83792D_REG_CHIPMAN);
1222                 if (val2 != 0x5c) {  /* the vendor is NOT Winbond */
1223                         goto ERROR1;
1224                 }
1225                 val1 = w83792d_read_value(new_client, W83792D_REG_WCHIPID);
1226                 if (val1 == 0x7a) {
1227                         kind = w83792d;
1228                 } else {
1229                         if (kind == 0)
1230                                         dev_warn(&new_client->dev,
1231                                         "w83792d: Ignoring 'force' parameter for"
1232                                         " unknown chip at adapter %d, address"
1233                                         " 0x%02x\n", i2c_adapter_id(adapter),
1234                                         address);
1235                         goto ERROR1;
1236                 }
1237         }
1238
1239         if (kind == w83792d) {
1240                 client_name = "w83792d";
1241         } else {
1242                 dev_err(&new_client->dev, "w83792d: Internal error: unknown"
1243                                           " kind (%d)?!?", kind);
1244                 goto ERROR1;
1245         }
1246
1247         /* Fill in the remaining client fields and put into the global list */
1248         strlcpy(new_client->name, client_name, I2C_NAME_SIZE);
1249         data->type = kind;
1250
1251         data->valid = 0;
1252         init_MUTEX(&data->update_lock);
1253
1254         /* Tell the I2C layer a new client has arrived */
1255         if ((err = i2c_attach_client(new_client)))
1256                 goto ERROR1;
1257
1258         if ((err = w83792d_detect_subclients(adapter, address,
1259                         kind, new_client)))
1260                 goto ERROR2;
1261
1262         /* Initialize the chip */
1263         w83792d_init_client(new_client);
1264
1265         /* A few vars need to be filled upon startup */
1266         for (i = 0; i < 7; i++) {
1267                 data->fan_min[i] = w83792d_read_value(new_client,
1268                                         W83792D_REG_FAN_MIN[i]);
1269         }
1270
1271         /* Register sysfs hooks */
1272         data->class_dev = hwmon_device_register(&new_client->dev);
1273         if (IS_ERR(data->class_dev)) {
1274                 err = PTR_ERR(data->class_dev);
1275                 goto ERROR3;
1276         }
1277         device_create_file_in(new_client, 0);
1278         device_create_file_in(new_client, 1);
1279         device_create_file_in(new_client, 2);
1280         device_create_file_in(new_client, 3);
1281         device_create_file_in(new_client, 4);
1282         device_create_file_in(new_client, 5);
1283         device_create_file_in(new_client, 6);
1284         device_create_file_in(new_client, 7);
1285         device_create_file_in(new_client, 8);
1286
1287         device_create_file_fan(new_client, 1);
1288         device_create_file_fan(new_client, 2);
1289         device_create_file_fan(new_client, 3);
1290
1291         /* Read GPIO enable register to check if pins for fan 4,5 are used as
1292            GPIO */
1293         val1 = w83792d_read_value(new_client, W83792D_REG_GPIO_EN);
1294         if (!(val1 & 0x40))
1295                 device_create_file_fan(new_client, 4);
1296         if (!(val1 & 0x20))
1297                 device_create_file_fan(new_client, 5);
1298
1299         val1 = w83792d_read_value(new_client, W83792D_REG_PIN);
1300         if (val1 & 0x40)
1301                 device_create_file_fan(new_client, 6);
1302         if (val1 & 0x04)
1303                 device_create_file_fan(new_client, 7);
1304
1305         device_create_file_temp1(new_client);           /* Temp1 */
1306         device_create_file_temp_add(new_client, 2);     /* Temp2 */
1307         device_create_file_temp_add(new_client, 3);     /* Temp3 */
1308
1309         device_create_file_alarms(new_client);
1310
1311         device_create_file_pwm(new_client, 1);
1312         device_create_file_pwm(new_client, 2);
1313         device_create_file_pwm(new_client, 3);
1314
1315         device_create_file_pwmenable(new_client, 1);
1316         device_create_file_pwmenable(new_client, 2);
1317         device_create_file_pwmenable(new_client, 3);
1318
1319         device_create_file_pwm_mode(new_client, 1);
1320         device_create_file_pwm_mode(new_client, 2);
1321         device_create_file_pwm_mode(new_client, 3);
1322
1323         device_create_file_chassis(new_client);
1324         device_create_file_chassis_clear(new_client);
1325
1326         device_create_file_thermal_cruise(new_client, 1);
1327         device_create_file_thermal_cruise(new_client, 2);
1328         device_create_file_thermal_cruise(new_client, 3);
1329
1330         device_create_file_tolerance(new_client, 1);
1331         device_create_file_tolerance(new_client, 2);
1332         device_create_file_tolerance(new_client, 3);
1333
1334         device_create_file_sf2_point(new_client, 1, 1); /* Fan1 */
1335         device_create_file_sf2_point(new_client, 2, 1); /* Fan1 */
1336         device_create_file_sf2_point(new_client, 3, 1); /* Fan1 */
1337         device_create_file_sf2_point(new_client, 4, 1); /* Fan1 */
1338         device_create_file_sf2_point(new_client, 1, 2); /* Fan2 */
1339         device_create_file_sf2_point(new_client, 2, 2); /* Fan2 */
1340         device_create_file_sf2_point(new_client, 3, 2); /* Fan2 */
1341         device_create_file_sf2_point(new_client, 4, 2); /* Fan2 */
1342         device_create_file_sf2_point(new_client, 1, 3); /* Fan3 */
1343         device_create_file_sf2_point(new_client, 2, 3); /* Fan3 */
1344         device_create_file_sf2_point(new_client, 3, 3); /* Fan3 */
1345         device_create_file_sf2_point(new_client, 4, 3); /* Fan3 */
1346
1347         device_create_file_sf2_level(new_client, 1, 1); /* Fan1 */
1348         device_create_file_sf2_level(new_client, 2, 1); /* Fan1 */
1349         device_create_file_sf2_level(new_client, 3, 1); /* Fan1 */
1350         device_create_file_sf2_level(new_client, 1, 2); /* Fan2 */
1351         device_create_file_sf2_level(new_client, 2, 2); /* Fan2 */
1352         device_create_file_sf2_level(new_client, 3, 2); /* Fan2 */
1353         device_create_file_sf2_level(new_client, 1, 3); /* Fan3 */
1354         device_create_file_sf2_level(new_client, 2, 3); /* Fan3 */
1355         device_create_file_sf2_level(new_client, 3, 3); /* Fan3 */
1356
1357         return 0;
1358
1359 ERROR3:
1360         if (data->lm75[0] != NULL) {
1361                 i2c_detach_client(data->lm75[0]);
1362                 kfree(data->lm75[0]);
1363         }
1364         if (data->lm75[1] != NULL) {
1365                 i2c_detach_client(data->lm75[1]);
1366                 kfree(data->lm75[1]);
1367         }
1368 ERROR2:
1369         i2c_detach_client(new_client);
1370 ERROR1:
1371         kfree(data);
1372 ERROR0:
1373         return err;
1374 }
1375
1376 static int
1377 w83792d_detach_client(struct i2c_client *client)
1378 {
1379         struct w83792d_data *data = i2c_get_clientdata(client);
1380         int err;
1381
1382         /* main client */
1383         if (data)
1384                 hwmon_device_unregister(data->class_dev);
1385
1386         if ((err = i2c_detach_client(client)))
1387                 return err;
1388
1389         /* main client */
1390         if (data)
1391                 kfree(data);
1392         /* subclient */
1393         else
1394                 kfree(client);
1395
1396         return 0;
1397 }
1398
1399 static void
1400 w83792d_init_client(struct i2c_client *client)
1401 {
1402         u8 temp2_cfg, temp3_cfg, vid_in_b;
1403
1404         if (init) {
1405                 w83792d_write_value(client, W83792D_REG_CONFIG, 0x80);
1406         }
1407         /* Clear the bit6 of W83792D_REG_VID_IN_B(set it into 0):
1408            W83792D_REG_VID_IN_B bit6 = 0: the high/low limit of
1409              vin0/vin1 can be modified by user;
1410            W83792D_REG_VID_IN_B bit6 = 1: the high/low limit of
1411              vin0/vin1 auto-updated, can NOT be modified by user. */
1412         vid_in_b = w83792d_read_value(client, W83792D_REG_VID_IN_B);
1413         w83792d_write_value(client, W83792D_REG_VID_IN_B,
1414                             vid_in_b & 0xbf);
1415
1416         temp2_cfg = w83792d_read_value(client, W83792D_REG_TEMP2_CONFIG);
1417         temp3_cfg = w83792d_read_value(client, W83792D_REG_TEMP3_CONFIG);
1418         w83792d_write_value(client, W83792D_REG_TEMP2_CONFIG,
1419                                 temp2_cfg & 0xe6);
1420         w83792d_write_value(client, W83792D_REG_TEMP3_CONFIG,
1421                                 temp3_cfg & 0xe6);
1422
1423         /* Start monitoring */
1424         w83792d_write_value(client, W83792D_REG_CONFIG,
1425                             (w83792d_read_value(client,
1426                                                 W83792D_REG_CONFIG) & 0xf7)
1427                             | 0x01);
1428 }
1429
1430 static struct w83792d_data *w83792d_update_device(struct device *dev)
1431 {
1432         struct i2c_client *client = to_i2c_client(dev);
1433         struct w83792d_data *data = i2c_get_clientdata(client);
1434         int i, j;
1435         u8 reg_array_tmp[4], pwm_array_tmp[7], reg_tmp;
1436
1437         down(&data->update_lock);
1438
1439         if (time_after
1440             (jiffies - data->last_updated, (unsigned long) (HZ * 3))
1441             || time_before(jiffies, data->last_updated) || !data->valid) {
1442                 dev_dbg(dev, "Starting device update\n");
1443
1444                 /* Update the voltages measured value and limits */
1445                 for (i = 0; i < 9; i++) {
1446                         data->in[i] = w83792d_read_value(client,
1447                                                 W83792D_REG_IN[i]);
1448                         data->in_max[i] = w83792d_read_value(client,
1449                                                 W83792D_REG_IN_MAX[i]);
1450                         data->in_min[i] = w83792d_read_value(client,
1451                                                 W83792D_REG_IN_MIN[i]);
1452                 }
1453                 data->low_bits = w83792d_read_value(client,
1454                                                 W83792D_REG_LOW_BITS1) +
1455                                  (w83792d_read_value(client,
1456                                                 W83792D_REG_LOW_BITS2) << 8);
1457                 for (i = 0; i < 7; i++) {
1458                         /* Update the Fan measured value and limits */
1459                         data->fan[i] = w83792d_read_value(client,
1460                                                 W83792D_REG_FAN[i]);
1461                         data->fan_min[i] = w83792d_read_value(client,
1462                                                 W83792D_REG_FAN_MIN[i]);
1463                         /* Update the PWM/DC Value and PWM/DC flag */
1464                         pwm_array_tmp[i] = w83792d_read_value(client,
1465                                                 W83792D_REG_PWM[i]);
1466                         data->pwm[i] = pwm_array_tmp[i] & 0x0f;
1467                         data->pwm_mode[i] = pwm_array_tmp[i] >> 7;
1468                 }
1469
1470                 reg_tmp = w83792d_read_value(client, W83792D_REG_FAN_CFG);
1471                 data->pwmenable[0] = reg_tmp & 0x03;
1472                 data->pwmenable[1] = (reg_tmp>>2) & 0x03;
1473                 data->pwmenable[2] = (reg_tmp>>4) & 0x03;
1474
1475                 for (i = 0; i < 3; i++) {
1476                         data->temp1[i] = w83792d_read_value(client,
1477                                                         W83792D_REG_TEMP1[i]);
1478                 }
1479                 for (i = 0; i < 2; i++) {
1480                         for (j = 0; j < 6; j++) {
1481                                 data->temp_add[i][j] = w83792d_read_value(
1482                                         client,W83792D_REG_TEMP_ADD[i][j]);
1483                         }
1484                 }
1485
1486                 /* Update the Fan Divisor */
1487                 for (i = 0; i < 4; i++) {
1488                         reg_array_tmp[i] = w83792d_read_value(client,
1489                                                         W83792D_REG_FAN_DIV[i]);
1490                 }
1491                 data->fan_div[0] = reg_array_tmp[0] & 0x07;
1492                 data->fan_div[1] = (reg_array_tmp[0] >> 4) & 0x07;
1493                 data->fan_div[2] = reg_array_tmp[1] & 0x07;
1494                 data->fan_div[3] = (reg_array_tmp[1] >> 4) & 0x07;
1495                 data->fan_div[4] = reg_array_tmp[2] & 0x07;
1496                 data->fan_div[5] = (reg_array_tmp[2] >> 4) & 0x07;
1497                 data->fan_div[6] = reg_array_tmp[3] & 0x07;
1498
1499                 /* Update the realtime status */
1500                 data->alarms = w83792d_read_value(client, W83792D_REG_ALARM1) +
1501                         (w83792d_read_value(client, W83792D_REG_ALARM2) << 8) +
1502                         (w83792d_read_value(client, W83792D_REG_ALARM3) << 16);
1503
1504                 /* Update CaseOpen status and it's CLR_CHS. */
1505                 data->chassis = (w83792d_read_value(client,
1506                         W83792D_REG_CHASSIS) >> 5) & 0x01;
1507                 data->chassis_clear = (w83792d_read_value(client,
1508                         W83792D_REG_CHASSIS_CLR) >> 7) & 0x01;
1509
1510                 /* Update Thermal Cruise/Smart Fan I target value */
1511                 for (i = 0; i < 3; i++) {
1512                         data->thermal_cruise[i] =
1513                                 w83792d_read_value(client,
1514                                 W83792D_REG_THERMAL[i]) & 0x7f;
1515                 }
1516
1517                 /* Update Smart Fan I/II tolerance */
1518                 reg_tmp = w83792d_read_value(client, W83792D_REG_TOLERANCE[0]);
1519                 data->tolerance[0] = reg_tmp & 0x0f;
1520                 data->tolerance[1] = (reg_tmp >> 4) & 0x0f;
1521                 data->tolerance[2] = w83792d_read_value(client,
1522                                         W83792D_REG_TOLERANCE[2]) & 0x0f;
1523
1524                 /* Update Smart Fan II temperature points */
1525                 for (i = 0; i < 3; i++) {
1526                         for (j = 0; j < 4; j++) {
1527                                 data->sf2_points[i][j] = w83792d_read_value(
1528                                         client,W83792D_REG_POINTS[i][j]) & 0x7f;
1529                         }
1530                 }
1531
1532                 /* Update Smart Fan II duty cycle levels */
1533                 for (i = 0; i < 3; i++) {
1534                         reg_tmp = w83792d_read_value(client,
1535                                                 W83792D_REG_LEVELS[i][0]);
1536                         data->sf2_levels[i][0] = reg_tmp & 0x0f;
1537                         data->sf2_levels[i][1] = (reg_tmp >> 4) & 0x0f;
1538                         reg_tmp = w83792d_read_value(client,
1539                                                 W83792D_REG_LEVELS[i][2]);
1540                         data->sf2_levels[i][2] = (reg_tmp >> 4) & 0x0f;
1541                         data->sf2_levels[i][3] = reg_tmp & 0x0f;
1542                 }
1543
1544                 data->last_updated = jiffies;
1545                 data->valid = 1;
1546         }
1547
1548         up(&data->update_lock);
1549
1550 #ifdef DEBUG
1551         w83792d_print_debug(data, dev);
1552 #endif
1553
1554         return data;
1555 }
1556
1557 #ifdef DEBUG
1558 static void w83792d_print_debug(struct w83792d_data *data, struct device *dev)
1559 {
1560         int i=0, j=0;
1561         dev_dbg(dev, "==========The following is the debug message...========\n");
1562         dev_dbg(dev, "9 set of Voltages: =====>\n");
1563         for (i=0; i<9; i++) {
1564                 dev_dbg(dev, "vin[%d] is: 0x%x\n", i, data->in[i]);
1565                 dev_dbg(dev, "vin[%d] max is: 0x%x\n", i, data->in_max[i]);
1566                 dev_dbg(dev, "vin[%d] min is: 0x%x\n", i, data->in_min[i]);
1567         }
1568         dev_dbg(dev, "Low Bit1 is: 0x%x\n", data->low_bits & 0xff);
1569         dev_dbg(dev, "Low Bit2 is: 0x%x\n", data->low_bits >> 8);
1570         dev_dbg(dev, "7 set of Fan Counts and Duty Cycles: =====>\n");
1571         for (i=0; i<7; i++) {
1572                 dev_dbg(dev, "fan[%d] is: 0x%x\n", i, data->fan[i]);
1573                 dev_dbg(dev, "fan[%d] min is: 0x%x\n", i, data->fan_min[i]);
1574                 dev_dbg(dev, "pwm[%d]     is: 0x%x\n", i, data->pwm[i]);
1575                 dev_dbg(dev, "pwm_mode[%d] is: 0x%x\n", i, data->pwm_mode[i]);
1576         }
1577         dev_dbg(dev, "3 set of Temperatures: =====>\n");
1578         for (i=0; i<3; i++) {
1579                 dev_dbg(dev, "temp1[%d] is: 0x%x\n", i, data->temp1[i]);
1580         }
1581
1582         for (i=0; i<2; i++) {
1583                 for (j=0; j<6; j++) {
1584                         dev_dbg(dev, "temp_add[%d][%d] is: 0x%x\n", i, j,
1585                                                         data->temp_add[i][j]);
1586                 }
1587         }
1588
1589         for (i=0; i<7; i++) {
1590                 dev_dbg(dev, "fan_div[%d] is: 0x%x\n", i, data->fan_div[i]);
1591         }
1592         dev_dbg(dev, "==========End of the debug message...==================\n");
1593         dev_dbg(dev, "\n");
1594 }
1595 #endif
1596
1597 static int __init
1598 sensors_w83792d_init(void)
1599 {
1600         return i2c_add_driver(&w83792d_driver);
1601 }
1602
1603 static void __exit
1604 sensors_w83792d_exit(void)
1605 {
1606         i2c_del_driver(&w83792d_driver);
1607 }
1608
1609 MODULE_AUTHOR("Chunhao Huang @ Winbond <DZShen@Winbond.com.tw>");
1610 MODULE_DESCRIPTION("W83792AD/D driver for linux-2.6");
1611 MODULE_LICENSE("GPL");
1612
1613 module_init(sensors_w83792d_init);
1614 module_exit(sensors_w83792d_exit);
1615