xref: /openbmc/linux/drivers/hwmon/w83792d.c (revision 1975d167)
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  * w83792d.c - Part of lm_sensors, Linux kernel modules for hardware
4  *	       monitoring
5  * Copyright (C) 2004, 2005 Winbond Electronics Corp.
6  *			    Shane Huang,
7  *			    Rudolf Marek <r.marek@assembler.cz>
8  *
9  * Note:
10  * 1. This driver is only for 2.6 kernel, 2.4 kernel need a different driver.
11  * 2. This driver is only for Winbond W83792D C version device, there
12  *     are also some motherboards with B version W83792D device. The
13  *     calculation method to in6-in7(measured value, limits) is a little
14  *     different between C and B version. C or B version can be identified
15  *     by CR[0x49h].
16  */
17 
18 /*
19  * Supports following chips:
20  *
21  * Chip		#vin	#fanin	#pwm	#temp	wchipid	vendid	i2c	ISA
22  * w83792d	9	7	7	3	0x7a	0x5ca3	yes	no
23  */
24 
25 #include <linux/module.h>
26 #include <linux/init.h>
27 #include <linux/slab.h>
28 #include <linux/i2c.h>
29 #include <linux/hwmon.h>
30 #include <linux/hwmon-sysfs.h>
31 #include <linux/err.h>
32 #include <linux/mutex.h>
33 #include <linux/sysfs.h>
34 #include <linux/jiffies.h>
35 
36 /* Addresses to scan */
37 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f,
38 						I2C_CLIENT_END };
39 
40 /* Insmod parameters */
41 
42 static unsigned short force_subclients[4];
43 module_param_array(force_subclients, short, NULL, 0);
44 MODULE_PARM_DESC(force_subclients,
45 		 "List of subclient addresses: {bus, clientaddr, subclientaddr1, subclientaddr2}");
46 
47 static bool init;
48 module_param(init, bool, 0);
49 MODULE_PARM_DESC(init, "Set to one to force chip initialization");
50 
51 /* The W83792D registers */
52 static const u8 W83792D_REG_IN[9] = {
53 	0x20,	/* Vcore A in DataSheet */
54 	0x21,	/* Vcore B in DataSheet */
55 	0x22,	/* VIN0 in DataSheet */
56 	0x23,	/* VIN1 in DataSheet */
57 	0x24,	/* VIN2 in DataSheet */
58 	0x25,	/* VIN3 in DataSheet */
59 	0x26,	/* 5VCC in DataSheet */
60 	0xB0,	/* 5VSB in DataSheet */
61 	0xB1	/* VBAT in DataSheet */
62 };
63 #define W83792D_REG_LOW_BITS1 0x3E  /* Low Bits I in DataSheet */
64 #define W83792D_REG_LOW_BITS2 0x3F  /* Low Bits II in DataSheet */
65 static const u8 W83792D_REG_IN_MAX[9] = {
66 	0x2B,	/* Vcore A High Limit in DataSheet */
67 	0x2D,	/* Vcore B High Limit in DataSheet */
68 	0x2F,	/* VIN0 High Limit in DataSheet */
69 	0x31,	/* VIN1 High Limit in DataSheet */
70 	0x33,	/* VIN2 High Limit in DataSheet */
71 	0x35,	/* VIN3 High Limit in DataSheet */
72 	0x37,	/* 5VCC High Limit in DataSheet */
73 	0xB4,	/* 5VSB High Limit in DataSheet */
74 	0xB6	/* VBAT High Limit in DataSheet */
75 };
76 static const u8 W83792D_REG_IN_MIN[9] = {
77 	0x2C,	/* Vcore A Low Limit in DataSheet */
78 	0x2E,	/* Vcore B Low Limit in DataSheet */
79 	0x30,	/* VIN0 Low Limit in DataSheet */
80 	0x32,	/* VIN1 Low Limit in DataSheet */
81 	0x34,	/* VIN2 Low Limit in DataSheet */
82 	0x36,	/* VIN3 Low Limit in DataSheet */
83 	0x38,	/* 5VCC Low Limit in DataSheet */
84 	0xB5,	/* 5VSB Low Limit in DataSheet */
85 	0xB7	/* VBAT Low Limit in DataSheet */
86 };
87 static const u8 W83792D_REG_FAN[7] = {
88 	0x28,	/* FAN 1 Count in DataSheet */
89 	0x29,	/* FAN 2 Count in DataSheet */
90 	0x2A,	/* FAN 3 Count in DataSheet */
91 	0xB8,	/* FAN 4 Count in DataSheet */
92 	0xB9,	/* FAN 5 Count in DataSheet */
93 	0xBA,	/* FAN 6 Count in DataSheet */
94 	0xBE	/* FAN 7 Count in DataSheet */
95 };
96 static const u8 W83792D_REG_FAN_MIN[7] = {
97 	0x3B,	/* FAN 1 Count Low Limit in DataSheet */
98 	0x3C,	/* FAN 2 Count Low Limit in DataSheet */
99 	0x3D,	/* FAN 3 Count Low Limit in DataSheet */
100 	0xBB,	/* FAN 4 Count Low Limit in DataSheet */
101 	0xBC,	/* FAN 5 Count Low Limit in DataSheet */
102 	0xBD,	/* FAN 6 Count Low Limit in DataSheet */
103 	0xBF	/* FAN 7 Count Low Limit in DataSheet */
104 };
105 #define W83792D_REG_FAN_CFG 0x84	/* FAN Configuration in DataSheet */
106 static const u8 W83792D_REG_FAN_DIV[4] = {
107 	0x47,	/* contains FAN2 and FAN1 Divisor */
108 	0x5B,	/* contains FAN4 and FAN3 Divisor */
109 	0x5C,	/* contains FAN6 and FAN5 Divisor */
110 	0x9E	/* contains FAN7 Divisor. */
111 };
112 static const u8 W83792D_REG_PWM[7] = {
113 	0x81,	/* FAN 1 Duty Cycle, be used to control */
114 	0x83,	/* FAN 2 Duty Cycle, be used to control */
115 	0x94,	/* FAN 3 Duty Cycle, be used to control */
116 	0xA3,	/* FAN 4 Duty Cycle, be used to control */
117 	0xA4,	/* FAN 5 Duty Cycle, be used to control */
118 	0xA5,	/* FAN 6 Duty Cycle, be used to control */
119 	0xA6	/* FAN 7 Duty Cycle, be used to control */
120 };
121 #define W83792D_REG_BANK		0x4E
122 #define W83792D_REG_TEMP2_CONFIG	0xC2
123 #define W83792D_REG_TEMP3_CONFIG	0xCA
124 
125 static const u8 W83792D_REG_TEMP1[3] = {
126 	0x27,	/* TEMP 1 in DataSheet */
127 	0x39,	/* TEMP 1 Over in DataSheet */
128 	0x3A,	/* TEMP 1 Hyst in DataSheet */
129 };
130 
131 static const u8 W83792D_REG_TEMP_ADD[2][6] = {
132 	{ 0xC0,		/* TEMP 2 in DataSheet */
133 	  0xC1,		/* TEMP 2(0.5 deg) in DataSheet */
134 	  0xC5,		/* TEMP 2 Over High part in DataSheet */
135 	  0xC6,		/* TEMP 2 Over Low part in DataSheet */
136 	  0xC3,		/* TEMP 2 Thyst High part in DataSheet */
137 	  0xC4 },	/* TEMP 2 Thyst Low part in DataSheet */
138 	{ 0xC8,		/* TEMP 3 in DataSheet */
139 	  0xC9,		/* TEMP 3(0.5 deg) in DataSheet */
140 	  0xCD,		/* TEMP 3 Over High part in DataSheet */
141 	  0xCE,		/* TEMP 3 Over Low part in DataSheet */
142 	  0xCB,		/* TEMP 3 Thyst High part in DataSheet */
143 	  0xCC }	/* TEMP 3 Thyst Low part in DataSheet */
144 };
145 
146 static const u8 W83792D_REG_THERMAL[3] = {
147 	0x85,	/* SmartFanI: Fan1 target value */
148 	0x86,	/* SmartFanI: Fan2 target value */
149 	0x96	/* SmartFanI: Fan3 target value */
150 };
151 
152 static const u8 W83792D_REG_TOLERANCE[3] = {
153 	0x87,	/* (bit3-0)SmartFan Fan1 tolerance */
154 	0x87,	/* (bit7-4)SmartFan Fan2 tolerance */
155 	0x97	/* (bit3-0)SmartFan Fan3 tolerance */
156 };
157 
158 static const u8 W83792D_REG_POINTS[3][4] = {
159 	{ 0x85,		/* SmartFanII: Fan1 temp point 1 */
160 	  0xE3,		/* SmartFanII: Fan1 temp point 2 */
161 	  0xE4,		/* SmartFanII: Fan1 temp point 3 */
162 	  0xE5 },	/* SmartFanII: Fan1 temp point 4 */
163 	{ 0x86,		/* SmartFanII: Fan2 temp point 1 */
164 	  0xE6,		/* SmartFanII: Fan2 temp point 2 */
165 	  0xE7,		/* SmartFanII: Fan2 temp point 3 */
166 	  0xE8 },	/* SmartFanII: Fan2 temp point 4 */
167 	{ 0x96,		/* SmartFanII: Fan3 temp point 1 */
168 	  0xE9,		/* SmartFanII: Fan3 temp point 2 */
169 	  0xEA,		/* SmartFanII: Fan3 temp point 3 */
170 	  0xEB }	/* SmartFanII: Fan3 temp point 4 */
171 };
172 
173 static const u8 W83792D_REG_LEVELS[3][4] = {
174 	{ 0x88,		/* (bit3-0) SmartFanII: Fan1 Non-Stop */
175 	  0x88,		/* (bit7-4) SmartFanII: Fan1 Level 1 */
176 	  0xE0,		/* (bit7-4) SmartFanII: Fan1 Level 2 */
177 	  0xE0 },	/* (bit3-0) SmartFanII: Fan1 Level 3 */
178 	{ 0x89,		/* (bit3-0) SmartFanII: Fan2 Non-Stop */
179 	  0x89,		/* (bit7-4) SmartFanII: Fan2 Level 1 */
180 	  0xE1,		/* (bit7-4) SmartFanII: Fan2 Level 2 */
181 	  0xE1 },	/* (bit3-0) SmartFanII: Fan2 Level 3 */
182 	{ 0x98,		/* (bit3-0) SmartFanII: Fan3 Non-Stop */
183 	  0x98,		/* (bit7-4) SmartFanII: Fan3 Level 1 */
184 	  0xE2,		/* (bit7-4) SmartFanII: Fan3 Level 2 */
185 	  0xE2 }	/* (bit3-0) SmartFanII: Fan3 Level 3 */
186 };
187 
188 #define W83792D_REG_GPIO_EN		0x1A
189 #define W83792D_REG_CONFIG		0x40
190 #define W83792D_REG_VID_FANDIV		0x47
191 #define W83792D_REG_CHIPID		0x49
192 #define W83792D_REG_WCHIPID		0x58
193 #define W83792D_REG_CHIPMAN		0x4F
194 #define W83792D_REG_PIN			0x4B
195 #define W83792D_REG_I2C_SUBADDR		0x4A
196 
197 #define W83792D_REG_ALARM1 0xA9		/* realtime status register1 */
198 #define W83792D_REG_ALARM2 0xAA		/* realtime status register2 */
199 #define W83792D_REG_ALARM3 0xAB		/* realtime status register3 */
200 #define W83792D_REG_CHASSIS 0x42	/* Bit 5: Case Open status bit */
201 #define W83792D_REG_CHASSIS_CLR 0x44	/* Bit 7: Case Open CLR_CHS/Reset bit */
202 
203 /* control in0/in1 's limit modifiability */
204 #define W83792D_REG_VID_IN_B		0x17
205 
206 #define W83792D_REG_VBAT		0x5D
207 #define W83792D_REG_I2C_ADDR		0x48
208 
209 /*
210  * Conversions. Rounding and limit checking is only done on the TO_REG
211  * variants. Note that you should be a bit careful with which arguments
212  * these macros are called: arguments may be evaluated more than once.
213  * Fixing this is just not worth it.
214  */
215 #define IN_FROM_REG(nr, val) (((nr) <= 1) ? ((val) * 2) : \
216 		((((nr) == 6) || ((nr) == 7)) ? ((val) * 6) : ((val) * 4)))
217 #define IN_TO_REG(nr, val) (((nr) <= 1) ? ((val) / 2) : \
218 		((((nr) == 6) || ((nr) == 7)) ? ((val) / 6) : ((val) / 4)))
219 
220 static inline u8
FAN_TO_REG(long rpm,int div)221 FAN_TO_REG(long rpm, int div)
222 {
223 	if (rpm == 0)
224 		return 255;
225 	rpm = clamp_val(rpm, 1, 1000000);
226 	return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
227 }
228 
229 #define FAN_FROM_REG(val, div)	((val) == 0   ? -1 : \
230 				((val) == 255 ? 0 : \
231 						1350000 / ((val) * (div))))
232 
233 /* for temp1 */
234 #define TEMP1_TO_REG(val)	(clamp_val(((val) < 0 ? (val) + 0x100 * 1000 \
235 						      : (val)) / 1000, 0, 0xff))
236 #define TEMP1_FROM_REG(val)	(((val) & 0x80 ? (val)-0x100 : (val)) * 1000)
237 /* for temp2 and temp3, because they need additional resolution */
238 #define TEMP_ADD_FROM_REG(val1, val2) \
239 	((((val1) & 0x80 ? (val1)-0x100 \
240 		: (val1)) * 1000) + ((val2 & 0x80) ? 500 : 0))
241 #define TEMP_ADD_TO_REG_HIGH(val) \
242 	(clamp_val(((val) < 0 ? (val) + 0x100 * 1000 : (val)) / 1000, 0, 0xff))
243 #define TEMP_ADD_TO_REG_LOW(val)	((val%1000) ? 0x80 : 0x00)
244 
245 #define DIV_FROM_REG(val)		(1 << (val))
246 
247 static inline u8
DIV_TO_REG(long val)248 DIV_TO_REG(long val)
249 {
250 	int i;
251 	val = clamp_val(val, 1, 128) >> 1;
252 	for (i = 0; i < 7; i++) {
253 		if (val == 0)
254 			break;
255 		val >>= 1;
256 	}
257 	return (u8)i;
258 }
259 
260 struct w83792d_data {
261 	struct device *hwmon_dev;
262 
263 	struct mutex update_lock;
264 	bool valid;		/* true if following fields are valid */
265 	unsigned long last_updated;	/* In jiffies */
266 
267 	u8 in[9];		/* Register value */
268 	u8 in_max[9];		/* Register value */
269 	u8 in_min[9];		/* Register value */
270 	u16 low_bits;		/* Additional resolution to voltage in6-0 */
271 	u8 fan[7];		/* Register value */
272 	u8 fan_min[7];		/* Register value */
273 	u8 temp1[3];		/* current, over, thyst */
274 	u8 temp_add[2][6];	/* Register value */
275 	u8 fan_div[7];		/* Register encoding, shifted right */
276 	u8 pwm[7];		/* The 7 PWM outputs */
277 	u8 pwmenable[3];
278 	u32 alarms;		/* realtime status register encoding,combined */
279 	u8 chassis;		/* Chassis status */
280 	u8 thermal_cruise[3];	/* Smart FanI: Fan1,2,3 target value */
281 	u8 tolerance[3];	/* Fan1,2,3 tolerance(Smart Fan I/II) */
282 	u8 sf2_points[3][4];	/* Smart FanII: Fan1,2,3 temperature points */
283 	u8 sf2_levels[3][4];	/* Smart FanII: Fan1,2,3 duty cycle levels */
284 };
285 
286 static int w83792d_probe(struct i2c_client *client);
287 static int w83792d_detect(struct i2c_client *client,
288 			  struct i2c_board_info *info);
289 static void w83792d_remove(struct i2c_client *client);
290 static struct w83792d_data *w83792d_update_device(struct device *dev);
291 
292 #ifdef DEBUG
293 static void w83792d_print_debug(struct w83792d_data *data, struct device *dev);
294 #endif
295 
296 static void w83792d_init_client(struct i2c_client *client);
297 
298 static const struct i2c_device_id w83792d_id[] = {
299 	{ "w83792d", 0 },
300 	{ }
301 };
302 MODULE_DEVICE_TABLE(i2c, w83792d_id);
303 
304 static struct i2c_driver w83792d_driver = {
305 	.class		= I2C_CLASS_HWMON,
306 	.driver = {
307 		.name = "w83792d",
308 	},
309 	.probe		= w83792d_probe,
310 	.remove		= w83792d_remove,
311 	.id_table	= w83792d_id,
312 	.detect		= w83792d_detect,
313 	.address_list	= normal_i2c,
314 };
315 
in_count_from_reg(int nr,struct w83792d_data * data)316 static inline long in_count_from_reg(int nr, struct w83792d_data *data)
317 {
318 	/* in7 and in8 do not have low bits, but the formula still works */
319 	return (data->in[nr] << 2) | ((data->low_bits >> (2 * nr)) & 0x03);
320 }
321 
322 /*
323  * The SMBus locks itself. The Winbond W83792D chip has a bank register,
324  * but the driver only accesses registers in bank 0, so we don't have
325  * to switch banks and lock access between switches.
326  */
w83792d_read_value(struct i2c_client * client,u8 reg)327 static inline int w83792d_read_value(struct i2c_client *client, u8 reg)
328 {
329 	return i2c_smbus_read_byte_data(client, reg);
330 }
331 
332 static inline int
w83792d_write_value(struct i2c_client * client,u8 reg,u8 value)333 w83792d_write_value(struct i2c_client *client, u8 reg, u8 value)
334 {
335 	return i2c_smbus_write_byte_data(client, reg, value);
336 }
337 
338 /* following are the sysfs callback functions */
show_in(struct device * dev,struct device_attribute * attr,char * buf)339 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
340 			char *buf)
341 {
342 	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
343 	int nr = sensor_attr->index;
344 	struct w83792d_data *data = w83792d_update_device(dev);
345 	return sprintf(buf, "%ld\n",
346 		       IN_FROM_REG(nr, in_count_from_reg(nr, data)));
347 }
348 
349 #define show_in_reg(reg) \
350 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
351 			char *buf) \
352 { \
353 	struct sensor_device_attribute *sensor_attr \
354 		= to_sensor_dev_attr(attr); \
355 	int nr = sensor_attr->index; \
356 	struct w83792d_data *data = w83792d_update_device(dev); \
357 	return sprintf(buf, "%ld\n", \
358 		       (long)(IN_FROM_REG(nr, data->reg[nr]) * 4)); \
359 }
360 
361 show_in_reg(in_min);
362 show_in_reg(in_max);
363 
364 #define store_in_reg(REG, reg) \
365 static ssize_t store_in_##reg(struct device *dev, \
366 				struct device_attribute *attr, \
367 				const char *buf, size_t count) \
368 { \
369 	struct sensor_device_attribute *sensor_attr \
370 			= 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 	unsigned long val; \
375 	int err = kstrtoul(buf, 10, &val); \
376 	if (err) \
377 		return err; \
378 	mutex_lock(&data->update_lock); \
379 	data->in_##reg[nr] = clamp_val(IN_TO_REG(nr, val) / 4, 0, 255); \
380 	w83792d_write_value(client, W83792D_REG_IN_##REG[nr], \
381 			    data->in_##reg[nr]); \
382 	mutex_unlock(&data->update_lock); \
383 	 \
384 	return count; \
385 }
386 store_in_reg(MIN, min);
387 store_in_reg(MAX, max);
388 
389 #define show_fan_reg(reg) \
390 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
391 			char *buf) \
392 { \
393 	struct sensor_device_attribute *sensor_attr \
394 			= to_sensor_dev_attr(attr); \
395 	int nr = sensor_attr->index - 1; \
396 	struct w83792d_data *data = w83792d_update_device(dev); \
397 	return sprintf(buf, "%d\n", \
398 		FAN_FROM_REG(data->reg[nr], DIV_FROM_REG(data->fan_div[nr]))); \
399 }
400 
401 show_fan_reg(fan);
402 show_fan_reg(fan_min);
403 
404 static ssize_t
store_fan_min(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)405 store_fan_min(struct device *dev, struct device_attribute *attr,
406 		const char *buf, size_t count)
407 {
408 	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
409 	int nr = sensor_attr->index - 1;
410 	struct i2c_client *client = to_i2c_client(dev);
411 	struct w83792d_data *data = i2c_get_clientdata(client);
412 	unsigned long val;
413 	int err;
414 
415 	err = kstrtoul(buf, 10, &val);
416 	if (err)
417 		return err;
418 
419 	mutex_lock(&data->update_lock);
420 	data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
421 	w83792d_write_value(client, W83792D_REG_FAN_MIN[nr],
422 				data->fan_min[nr]);
423 	mutex_unlock(&data->update_lock);
424 
425 	return count;
426 }
427 
428 static ssize_t
show_fan_div(struct device * dev,struct device_attribute * attr,char * buf)429 show_fan_div(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;
434 	struct w83792d_data *data = w83792d_update_device(dev);
435 	return sprintf(buf, "%u\n", DIV_FROM_REG(data->fan_div[nr - 1]));
436 }
437 
438 /*
439  * Note: we save and restore the fan minimum here, because its value is
440  * determined in part by the fan divisor.  This follows the principle of
441  * least surprise; the user doesn't expect the fan minimum to change just
442  * because the divisor changed.
443  */
444 static ssize_t
store_fan_div(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)445 store_fan_div(struct device *dev, struct device_attribute *attr,
446 		const char *buf, size_t count)
447 {
448 	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
449 	int nr = sensor_attr->index - 1;
450 	struct i2c_client *client = to_i2c_client(dev);
451 	struct w83792d_data *data = i2c_get_clientdata(client);
452 	unsigned long min;
453 	/*u8 reg;*/
454 	u8 fan_div_reg = 0;
455 	u8 tmp_fan_div;
456 	unsigned long val;
457 	int err;
458 
459 	err = kstrtoul(buf, 10, &val);
460 	if (err)
461 		return err;
462 
463 	/* Save fan_min */
464 	mutex_lock(&data->update_lock);
465 	min = FAN_FROM_REG(data->fan_min[nr],
466 			   DIV_FROM_REG(data->fan_div[nr]));
467 
468 	data->fan_div[nr] = DIV_TO_REG(val);
469 
470 	fan_div_reg = w83792d_read_value(client, W83792D_REG_FAN_DIV[nr >> 1]);
471 	fan_div_reg &= (nr & 0x01) ? 0x8f : 0xf8;
472 	tmp_fan_div = (nr & 0x01) ? (((data->fan_div[nr]) << 4) & 0x70)
473 					: ((data->fan_div[nr]) & 0x07);
474 	w83792d_write_value(client, W83792D_REG_FAN_DIV[nr >> 1],
475 					fan_div_reg | tmp_fan_div);
476 
477 	/* Restore fan_min */
478 	data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
479 	w83792d_write_value(client, W83792D_REG_FAN_MIN[nr], data->fan_min[nr]);
480 	mutex_unlock(&data->update_lock);
481 
482 	return count;
483 }
484 
485 /* read/write the temperature1, includes measured value and limits */
486 
show_temp1(struct device * dev,struct device_attribute * attr,char * buf)487 static ssize_t show_temp1(struct device *dev, struct device_attribute *attr,
488 				char *buf)
489 {
490 	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
491 	int nr = sensor_attr->index;
492 	struct w83792d_data *data = w83792d_update_device(dev);
493 	return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp1[nr]));
494 }
495 
store_temp1(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)496 static ssize_t store_temp1(struct device *dev, struct device_attribute *attr,
497 				const char *buf, size_t count)
498 {
499 	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
500 	int nr = sensor_attr->index;
501 	struct i2c_client *client = to_i2c_client(dev);
502 	struct w83792d_data *data = i2c_get_clientdata(client);
503 	long val;
504 	int err;
505 
506 	err = kstrtol(buf, 10, &val);
507 	if (err)
508 		return err;
509 
510 	mutex_lock(&data->update_lock);
511 	data->temp1[nr] = TEMP1_TO_REG(val);
512 	w83792d_write_value(client, W83792D_REG_TEMP1[nr],
513 		data->temp1[nr]);
514 	mutex_unlock(&data->update_lock);
515 
516 	return count;
517 }
518 
519 /* read/write the temperature2-3, includes measured value and limits */
520 
show_temp23(struct device * dev,struct device_attribute * attr,char * buf)521 static ssize_t show_temp23(struct device *dev, struct device_attribute *attr,
522 				char *buf)
523 {
524 	struct sensor_device_attribute_2 *sensor_attr
525 	  = to_sensor_dev_attr_2(attr);
526 	int nr = sensor_attr->nr;
527 	int index = sensor_attr->index;
528 	struct w83792d_data *data = w83792d_update_device(dev);
529 	return sprintf(buf, "%ld\n",
530 		(long)TEMP_ADD_FROM_REG(data->temp_add[nr][index],
531 			data->temp_add[nr][index+1]));
532 }
533 
store_temp23(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)534 static ssize_t store_temp23(struct device *dev, struct device_attribute *attr,
535 				const char *buf, size_t count)
536 {
537 	struct sensor_device_attribute_2 *sensor_attr
538 	  = to_sensor_dev_attr_2(attr);
539 	int nr = sensor_attr->nr;
540 	int index = sensor_attr->index;
541 	struct i2c_client *client = to_i2c_client(dev);
542 	struct w83792d_data *data = i2c_get_clientdata(client);
543 	long val;
544 	int err;
545 
546 	err = kstrtol(buf, 10, &val);
547 	if (err)
548 		return err;
549 
550 	mutex_lock(&data->update_lock);
551 	data->temp_add[nr][index] = TEMP_ADD_TO_REG_HIGH(val);
552 	data->temp_add[nr][index+1] = TEMP_ADD_TO_REG_LOW(val);
553 	w83792d_write_value(client, W83792D_REG_TEMP_ADD[nr][index],
554 		data->temp_add[nr][index]);
555 	w83792d_write_value(client, W83792D_REG_TEMP_ADD[nr][index+1],
556 		data->temp_add[nr][index+1]);
557 	mutex_unlock(&data->update_lock);
558 
559 	return count;
560 }
561 
562 /* get realtime status of all sensors items: voltage, temp, fan */
563 static ssize_t
alarms_show(struct device * dev,struct device_attribute * attr,char * buf)564 alarms_show(struct device *dev, struct device_attribute *attr, char *buf)
565 {
566 	struct w83792d_data *data = w83792d_update_device(dev);
567 	return sprintf(buf, "%d\n", data->alarms);
568 }
569 
show_alarm(struct device * dev,struct device_attribute * attr,char * buf)570 static ssize_t show_alarm(struct device *dev,
571 			  struct device_attribute *attr, char *buf)
572 {
573 	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
574 	int nr = sensor_attr->index;
575 	struct w83792d_data *data = w83792d_update_device(dev);
576 	return sprintf(buf, "%d\n", (data->alarms >> nr) & 1);
577 }
578 
579 static ssize_t
show_pwm(struct device * dev,struct device_attribute * attr,char * buf)580 show_pwm(struct device *dev, struct device_attribute *attr,
581 		char *buf)
582 {
583 	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
584 	int nr = sensor_attr->index;
585 	struct w83792d_data *data = w83792d_update_device(dev);
586 	return sprintf(buf, "%d\n", (data->pwm[nr] & 0x0f) << 4);
587 }
588 
589 static ssize_t
show_pwmenable(struct device * dev,struct device_attribute * attr,char * buf)590 show_pwmenable(struct device *dev, struct device_attribute *attr,
591 			char *buf)
592 {
593 	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
594 	int nr = sensor_attr->index - 1;
595 	struct w83792d_data *data = w83792d_update_device(dev);
596 	long pwm_enable_tmp = 1;
597 
598 	switch (data->pwmenable[nr]) {
599 	case 0:
600 		pwm_enable_tmp = 1; /* manual mode */
601 		break;
602 	case 1:
603 		pwm_enable_tmp = 3; /*thermal cruise/Smart Fan I */
604 		break;
605 	case 2:
606 		pwm_enable_tmp = 2; /* Smart Fan II */
607 		break;
608 	}
609 
610 	return sprintf(buf, "%ld\n", pwm_enable_tmp);
611 }
612 
613 static ssize_t
store_pwm(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)614 store_pwm(struct device *dev, struct device_attribute *attr,
615 		const char *buf, size_t count)
616 {
617 	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
618 	int nr = sensor_attr->index;
619 	struct i2c_client *client = to_i2c_client(dev);
620 	struct w83792d_data *data = i2c_get_clientdata(client);
621 	unsigned long val;
622 	int err;
623 
624 	err = kstrtoul(buf, 10, &val);
625 	if (err)
626 		return err;
627 	val = clamp_val(val, 0, 255) >> 4;
628 
629 	mutex_lock(&data->update_lock);
630 	val |= w83792d_read_value(client, W83792D_REG_PWM[nr]) & 0xf0;
631 	data->pwm[nr] = val;
632 	w83792d_write_value(client, W83792D_REG_PWM[nr], data->pwm[nr]);
633 	mutex_unlock(&data->update_lock);
634 
635 	return count;
636 }
637 
638 static ssize_t
store_pwmenable(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)639 store_pwmenable(struct device *dev, struct device_attribute *attr,
640 			const char *buf, size_t count)
641 {
642 	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
643 	int nr = sensor_attr->index - 1;
644 	struct i2c_client *client = to_i2c_client(dev);
645 	struct w83792d_data *data = i2c_get_clientdata(client);
646 	u8 fan_cfg_tmp, cfg1_tmp, cfg2_tmp, cfg3_tmp, cfg4_tmp;
647 	unsigned long val;
648 	int err;
649 
650 	err = kstrtoul(buf, 10, &val);
651 	if (err)
652 		return err;
653 
654 	if (val < 1 || val > 3)
655 		return -EINVAL;
656 
657 	mutex_lock(&data->update_lock);
658 	switch (val) {
659 	case 1:
660 		data->pwmenable[nr] = 0; /* manual mode */
661 		break;
662 	case 2:
663 		data->pwmenable[nr] = 2; /* Smart Fan II */
664 		break;
665 	case 3:
666 		data->pwmenable[nr] = 1; /* thermal cruise/Smart Fan I */
667 		break;
668 	}
669 	cfg1_tmp = data->pwmenable[0];
670 	cfg2_tmp = (data->pwmenable[1]) << 2;
671 	cfg3_tmp = (data->pwmenable[2]) << 4;
672 	cfg4_tmp = w83792d_read_value(client, W83792D_REG_FAN_CFG) & 0xc0;
673 	fan_cfg_tmp = ((cfg4_tmp | cfg3_tmp) | cfg2_tmp) | cfg1_tmp;
674 	w83792d_write_value(client, W83792D_REG_FAN_CFG, fan_cfg_tmp);
675 	mutex_unlock(&data->update_lock);
676 
677 	return count;
678 }
679 
680 static ssize_t
show_pwm_mode(struct device * dev,struct device_attribute * attr,char * buf)681 show_pwm_mode(struct device *dev, struct device_attribute *attr,
682 			char *buf)
683 {
684 	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
685 	int nr = sensor_attr->index;
686 	struct w83792d_data *data = w83792d_update_device(dev);
687 	return sprintf(buf, "%d\n", data->pwm[nr] >> 7);
688 }
689 
690 static ssize_t
store_pwm_mode(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)691 store_pwm_mode(struct device *dev, struct device_attribute *attr,
692 			const char *buf, size_t count)
693 {
694 	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
695 	int nr = sensor_attr->index;
696 	struct i2c_client *client = to_i2c_client(dev);
697 	struct w83792d_data *data = i2c_get_clientdata(client);
698 	unsigned long val;
699 	int err;
700 
701 	err = kstrtoul(buf, 10, &val);
702 	if (err)
703 		return err;
704 	if (val > 1)
705 		return -EINVAL;
706 
707 	mutex_lock(&data->update_lock);
708 	data->pwm[nr] = w83792d_read_value(client, W83792D_REG_PWM[nr]);
709 	if (val) {			/* PWM mode */
710 		data->pwm[nr] |= 0x80;
711 	} else {			/* DC mode */
712 		data->pwm[nr] &= 0x7f;
713 	}
714 	w83792d_write_value(client, W83792D_REG_PWM[nr], data->pwm[nr]);
715 	mutex_unlock(&data->update_lock);
716 
717 	return count;
718 }
719 
720 static ssize_t
intrusion0_alarm_show(struct device * dev,struct device_attribute * attr,char * buf)721 intrusion0_alarm_show(struct device *dev, struct device_attribute *attr,
722 		      char *buf)
723 {
724 	struct w83792d_data *data = w83792d_update_device(dev);
725 	return sprintf(buf, "%d\n", data->chassis);
726 }
727 
728 static ssize_t
intrusion0_alarm_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)729 intrusion0_alarm_store(struct device *dev, struct device_attribute *attr,
730 		       const char *buf, size_t count)
731 {
732 	struct i2c_client *client = to_i2c_client(dev);
733 	struct w83792d_data *data = i2c_get_clientdata(client);
734 	unsigned long val;
735 	u8 reg;
736 
737 	if (kstrtoul(buf, 10, &val) || val != 0)
738 		return -EINVAL;
739 
740 	mutex_lock(&data->update_lock);
741 	reg = w83792d_read_value(client, W83792D_REG_CHASSIS_CLR);
742 	w83792d_write_value(client, W83792D_REG_CHASSIS_CLR, reg | 0x80);
743 	data->valid = false;		/* Force cache refresh */
744 	mutex_unlock(&data->update_lock);
745 
746 	return count;
747 }
748 
749 /* For Smart Fan I / Thermal Cruise */
750 static ssize_t
show_thermal_cruise(struct device * dev,struct device_attribute * attr,char * buf)751 show_thermal_cruise(struct device *dev, struct device_attribute *attr,
752 			char *buf)
753 {
754 	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
755 	int nr = sensor_attr->index;
756 	struct w83792d_data *data = w83792d_update_device(dev);
757 	return sprintf(buf, "%ld\n", (long)data->thermal_cruise[nr-1]);
758 }
759 
760 static ssize_t
store_thermal_cruise(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)761 store_thermal_cruise(struct device *dev, struct device_attribute *attr,
762 			const char *buf, size_t count)
763 {
764 	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
765 	int nr = sensor_attr->index - 1;
766 	struct i2c_client *client = to_i2c_client(dev);
767 	struct w83792d_data *data = i2c_get_clientdata(client);
768 	u8 target_tmp = 0, target_mask = 0;
769 	unsigned long val;
770 	int err;
771 
772 	err = kstrtoul(buf, 10, &val);
773 	if (err)
774 		return err;
775 
776 	target_tmp = val;
777 	target_tmp = target_tmp & 0x7f;
778 	mutex_lock(&data->update_lock);
779 	target_mask = w83792d_read_value(client,
780 					 W83792D_REG_THERMAL[nr]) & 0x80;
781 	data->thermal_cruise[nr] = clamp_val(target_tmp, 0, 255);
782 	w83792d_write_value(client, W83792D_REG_THERMAL[nr],
783 		(data->thermal_cruise[nr]) | target_mask);
784 	mutex_unlock(&data->update_lock);
785 
786 	return count;
787 }
788 
789 /* For Smart Fan I/Thermal Cruise and Smart Fan II */
790 static ssize_t
show_tolerance(struct device * dev,struct device_attribute * attr,char * buf)791 show_tolerance(struct device *dev, struct device_attribute *attr,
792 		char *buf)
793 {
794 	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
795 	int nr = sensor_attr->index;
796 	struct w83792d_data *data = w83792d_update_device(dev);
797 	return sprintf(buf, "%ld\n", (long)data->tolerance[nr-1]);
798 }
799 
800 static ssize_t
store_tolerance(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)801 store_tolerance(struct device *dev, struct device_attribute *attr,
802 		const char *buf, size_t count)
803 {
804 	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
805 	int nr = sensor_attr->index - 1;
806 	struct i2c_client *client = to_i2c_client(dev);
807 	struct w83792d_data *data = i2c_get_clientdata(client);
808 	u8 tol_tmp, tol_mask;
809 	unsigned long val;
810 	int err;
811 
812 	err = kstrtoul(buf, 10, &val);
813 	if (err)
814 		return err;
815 
816 	mutex_lock(&data->update_lock);
817 	tol_mask = w83792d_read_value(client,
818 		W83792D_REG_TOLERANCE[nr]) & ((nr == 1) ? 0x0f : 0xf0);
819 	tol_tmp = clamp_val(val, 0, 15);
820 	tol_tmp &= 0x0f;
821 	data->tolerance[nr] = tol_tmp;
822 	if (nr == 1)
823 		tol_tmp <<= 4;
824 	w83792d_write_value(client, W83792D_REG_TOLERANCE[nr],
825 		tol_mask | tol_tmp);
826 	mutex_unlock(&data->update_lock);
827 
828 	return count;
829 }
830 
831 /* For Smart Fan II */
832 static ssize_t
show_sf2_point(struct device * dev,struct device_attribute * attr,char * buf)833 show_sf2_point(struct device *dev, struct device_attribute *attr,
834 		char *buf)
835 {
836 	struct sensor_device_attribute_2 *sensor_attr
837 	  = to_sensor_dev_attr_2(attr);
838 	int nr = sensor_attr->nr;
839 	int index = sensor_attr->index;
840 	struct w83792d_data *data = w83792d_update_device(dev);
841 	return sprintf(buf, "%ld\n", (long)data->sf2_points[index-1][nr-1]);
842 }
843 
844 static ssize_t
store_sf2_point(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)845 store_sf2_point(struct device *dev, struct device_attribute *attr,
846 		const char *buf, size_t count)
847 {
848 	struct sensor_device_attribute_2 *sensor_attr
849 	  = to_sensor_dev_attr_2(attr);
850 	int nr = sensor_attr->nr - 1;
851 	int index = sensor_attr->index - 1;
852 	struct i2c_client *client = to_i2c_client(dev);
853 	struct w83792d_data *data = i2c_get_clientdata(client);
854 	u8 mask_tmp = 0;
855 	unsigned long val;
856 	int err;
857 
858 	err = kstrtoul(buf, 10, &val);
859 	if (err)
860 		return err;
861 
862 	mutex_lock(&data->update_lock);
863 	data->sf2_points[index][nr] = clamp_val(val, 0, 127);
864 	mask_tmp = w83792d_read_value(client,
865 					W83792D_REG_POINTS[index][nr]) & 0x80;
866 	w83792d_write_value(client, W83792D_REG_POINTS[index][nr],
867 		mask_tmp|data->sf2_points[index][nr]);
868 	mutex_unlock(&data->update_lock);
869 
870 	return count;
871 }
872 
873 static ssize_t
show_sf2_level(struct device * dev,struct device_attribute * attr,char * buf)874 show_sf2_level(struct device *dev, struct device_attribute *attr,
875 		char *buf)
876 {
877 	struct sensor_device_attribute_2 *sensor_attr
878 	  = to_sensor_dev_attr_2(attr);
879 	int nr = sensor_attr->nr;
880 	int index = sensor_attr->index;
881 	struct w83792d_data *data = w83792d_update_device(dev);
882 	return sprintf(buf, "%d\n",
883 			(((data->sf2_levels[index-1][nr]) * 100) / 15));
884 }
885 
886 static ssize_t
store_sf2_level(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)887 store_sf2_level(struct device *dev, struct device_attribute *attr,
888 		const char *buf, size_t count)
889 {
890 	struct sensor_device_attribute_2 *sensor_attr
891 	  = to_sensor_dev_attr_2(attr);
892 	int nr = sensor_attr->nr;
893 	int index = sensor_attr->index - 1;
894 	struct i2c_client *client = to_i2c_client(dev);
895 	struct w83792d_data *data = i2c_get_clientdata(client);
896 	u8 mask_tmp = 0, level_tmp = 0;
897 	unsigned long val;
898 	int err;
899 
900 	err = kstrtoul(buf, 10, &val);
901 	if (err)
902 		return err;
903 
904 	mutex_lock(&data->update_lock);
905 	data->sf2_levels[index][nr] = clamp_val((val * 15) / 100, 0, 15);
906 	mask_tmp = w83792d_read_value(client, W83792D_REG_LEVELS[index][nr])
907 		& ((nr == 3) ? 0xf0 : 0x0f);
908 	if (nr == 3)
909 		level_tmp = data->sf2_levels[index][nr];
910 	else
911 		level_tmp = data->sf2_levels[index][nr] << 4;
912 	w83792d_write_value(client, W83792D_REG_LEVELS[index][nr],
913 			    level_tmp | mask_tmp);
914 	mutex_unlock(&data->update_lock);
915 
916 	return count;
917 }
918 
919 
920 static int
w83792d_detect_subclients(struct i2c_client * new_client)921 w83792d_detect_subclients(struct i2c_client *new_client)
922 {
923 	int i, id;
924 	int address = new_client->addr;
925 	u8 val;
926 	struct i2c_adapter *adapter = new_client->adapter;
927 
928 	id = i2c_adapter_id(adapter);
929 	if (force_subclients[0] == id && force_subclients[1] == address) {
930 		for (i = 2; i <= 3; i++) {
931 			if (force_subclients[i] < 0x48 ||
932 			    force_subclients[i] > 0x4f) {
933 				dev_err(&new_client->dev,
934 					"invalid subclient address %d; must be 0x48-0x4f\n",
935 					force_subclients[i]);
936 				return -ENODEV;
937 			}
938 		}
939 		w83792d_write_value(new_client, W83792D_REG_I2C_SUBADDR,
940 					(force_subclients[2] & 0x07) |
941 					((force_subclients[3] & 0x07) << 4));
942 	}
943 
944 	val = w83792d_read_value(new_client, W83792D_REG_I2C_SUBADDR);
945 
946 	if (!(val & 0x88) && (val & 0x7) == ((val >> 4) & 0x7)) {
947 		dev_err(&new_client->dev,
948 			"duplicate addresses 0x%x, use force_subclient\n", 0x48 + (val & 0x7));
949 		return -ENODEV;
950 	}
951 
952 	if (!(val & 0x08))
953 		devm_i2c_new_dummy_device(&new_client->dev, adapter, 0x48 + (val & 0x7));
954 
955 	if (!(val & 0x80))
956 		devm_i2c_new_dummy_device(&new_client->dev, adapter, 0x48 + ((val >> 4) & 0x7));
957 
958 	return 0;
959 }
960 
961 static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in, NULL, 0);
962 static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in, NULL, 1);
963 static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in, NULL, 2);
964 static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in, NULL, 3);
965 static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, show_in, NULL, 4);
966 static SENSOR_DEVICE_ATTR(in5_input, S_IRUGO, show_in, NULL, 5);
967 static SENSOR_DEVICE_ATTR(in6_input, S_IRUGO, show_in, NULL, 6);
968 static SENSOR_DEVICE_ATTR(in7_input, S_IRUGO, show_in, NULL, 7);
969 static SENSOR_DEVICE_ATTR(in8_input, S_IRUGO, show_in, NULL, 8);
970 static SENSOR_DEVICE_ATTR(in0_min, S_IWUSR | S_IRUGO,
971 			show_in_min, store_in_min, 0);
972 static SENSOR_DEVICE_ATTR(in1_min, S_IWUSR | S_IRUGO,
973 			show_in_min, store_in_min, 1);
974 static SENSOR_DEVICE_ATTR(in2_min, S_IWUSR | S_IRUGO,
975 			show_in_min, store_in_min, 2);
976 static SENSOR_DEVICE_ATTR(in3_min, S_IWUSR | S_IRUGO,
977 			show_in_min, store_in_min, 3);
978 static SENSOR_DEVICE_ATTR(in4_min, S_IWUSR | S_IRUGO,
979 			show_in_min, store_in_min, 4);
980 static SENSOR_DEVICE_ATTR(in5_min, S_IWUSR | S_IRUGO,
981 			show_in_min, store_in_min, 5);
982 static SENSOR_DEVICE_ATTR(in6_min, S_IWUSR | S_IRUGO,
983 			show_in_min, store_in_min, 6);
984 static SENSOR_DEVICE_ATTR(in7_min, S_IWUSR | S_IRUGO,
985 			show_in_min, store_in_min, 7);
986 static SENSOR_DEVICE_ATTR(in8_min, S_IWUSR | S_IRUGO,
987 			show_in_min, store_in_min, 8);
988 static SENSOR_DEVICE_ATTR(in0_max, S_IWUSR | S_IRUGO,
989 			show_in_max, store_in_max, 0);
990 static SENSOR_DEVICE_ATTR(in1_max, S_IWUSR | S_IRUGO,
991 			show_in_max, store_in_max, 1);
992 static SENSOR_DEVICE_ATTR(in2_max, S_IWUSR | S_IRUGO,
993 			show_in_max, store_in_max, 2);
994 static SENSOR_DEVICE_ATTR(in3_max, S_IWUSR | S_IRUGO,
995 			show_in_max, store_in_max, 3);
996 static SENSOR_DEVICE_ATTR(in4_max, S_IWUSR | S_IRUGO,
997 			show_in_max, store_in_max, 4);
998 static SENSOR_DEVICE_ATTR(in5_max, S_IWUSR | S_IRUGO,
999 			show_in_max, store_in_max, 5);
1000 static SENSOR_DEVICE_ATTR(in6_max, S_IWUSR | S_IRUGO,
1001 			show_in_max, store_in_max, 6);
1002 static SENSOR_DEVICE_ATTR(in7_max, S_IWUSR | S_IRUGO,
1003 			show_in_max, store_in_max, 7);
1004 static SENSOR_DEVICE_ATTR(in8_max, S_IWUSR | S_IRUGO,
1005 			show_in_max, store_in_max, 8);
1006 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp1, NULL, 0, 0);
1007 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp23, NULL, 0, 0);
1008 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp23, NULL, 1, 0);
1009 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR,
1010 			show_temp1, store_temp1, 0, 1);
1011 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp23,
1012 			store_temp23, 0, 2);
1013 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp23,
1014 			store_temp23, 1, 2);
1015 static SENSOR_DEVICE_ATTR_2(temp1_max_hyst, S_IRUGO | S_IWUSR,
1016 			show_temp1, store_temp1, 0, 2);
1017 static SENSOR_DEVICE_ATTR_2(temp2_max_hyst, S_IRUGO | S_IWUSR,
1018 			show_temp23, store_temp23, 0, 4);
1019 static SENSOR_DEVICE_ATTR_2(temp3_max_hyst, S_IRUGO | S_IWUSR,
1020 			show_temp23, store_temp23, 1, 4);
1021 static DEVICE_ATTR_RO(alarms);
1022 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
1023 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
1024 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 2);
1025 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 3);
1026 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 4);
1027 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 5);
1028 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 6);
1029 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 7);
1030 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 8);
1031 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 9);
1032 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 10);
1033 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 11);
1034 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 12);
1035 static SENSOR_DEVICE_ATTR(fan7_alarm, S_IRUGO, show_alarm, NULL, 15);
1036 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 19);
1037 static SENSOR_DEVICE_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 20);
1038 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 21);
1039 static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 22);
1040 static SENSOR_DEVICE_ATTR(fan6_alarm, S_IRUGO, show_alarm, NULL, 23);
1041 static DEVICE_ATTR_RW(intrusion0_alarm);
1042 static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 0);
1043 static SENSOR_DEVICE_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 1);
1044 static SENSOR_DEVICE_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 2);
1045 static SENSOR_DEVICE_ATTR(pwm4, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 3);
1046 static SENSOR_DEVICE_ATTR(pwm5, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 4);
1047 static SENSOR_DEVICE_ATTR(pwm6, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 5);
1048 static SENSOR_DEVICE_ATTR(pwm7, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 6);
1049 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
1050 			show_pwmenable, store_pwmenable, 1);
1051 static SENSOR_DEVICE_ATTR(pwm2_enable, S_IWUSR | S_IRUGO,
1052 			show_pwmenable, store_pwmenable, 2);
1053 static SENSOR_DEVICE_ATTR(pwm3_enable, S_IWUSR | S_IRUGO,
1054 			show_pwmenable, store_pwmenable, 3);
1055 static SENSOR_DEVICE_ATTR(pwm1_mode, S_IWUSR | S_IRUGO,
1056 			show_pwm_mode, store_pwm_mode, 0);
1057 static SENSOR_DEVICE_ATTR(pwm2_mode, S_IWUSR | S_IRUGO,
1058 			show_pwm_mode, store_pwm_mode, 1);
1059 static SENSOR_DEVICE_ATTR(pwm3_mode, S_IWUSR | S_IRUGO,
1060 			show_pwm_mode, store_pwm_mode, 2);
1061 static SENSOR_DEVICE_ATTR(pwm4_mode, S_IWUSR | S_IRUGO,
1062 			show_pwm_mode, store_pwm_mode, 3);
1063 static SENSOR_DEVICE_ATTR(pwm5_mode, S_IWUSR | S_IRUGO,
1064 			show_pwm_mode, store_pwm_mode, 4);
1065 static SENSOR_DEVICE_ATTR(pwm6_mode, S_IWUSR | S_IRUGO,
1066 			show_pwm_mode, store_pwm_mode, 5);
1067 static SENSOR_DEVICE_ATTR(pwm7_mode, S_IWUSR | S_IRUGO,
1068 			show_pwm_mode, store_pwm_mode, 6);
1069 static SENSOR_DEVICE_ATTR(tolerance1, S_IWUSR | S_IRUGO,
1070 			show_tolerance, store_tolerance, 1);
1071 static SENSOR_DEVICE_ATTR(tolerance2, S_IWUSR | S_IRUGO,
1072 			show_tolerance, store_tolerance, 2);
1073 static SENSOR_DEVICE_ATTR(tolerance3, S_IWUSR | S_IRUGO,
1074 			show_tolerance, store_tolerance, 3);
1075 static SENSOR_DEVICE_ATTR(thermal_cruise1, S_IWUSR | S_IRUGO,
1076 			show_thermal_cruise, store_thermal_cruise, 1);
1077 static SENSOR_DEVICE_ATTR(thermal_cruise2, S_IWUSR | S_IRUGO,
1078 			show_thermal_cruise, store_thermal_cruise, 2);
1079 static SENSOR_DEVICE_ATTR(thermal_cruise3, S_IWUSR | S_IRUGO,
1080 			show_thermal_cruise, store_thermal_cruise, 3);
1081 static SENSOR_DEVICE_ATTR_2(sf2_point1_fan1, S_IRUGO | S_IWUSR,
1082 			show_sf2_point, store_sf2_point, 1, 1);
1083 static SENSOR_DEVICE_ATTR_2(sf2_point2_fan1, S_IRUGO | S_IWUSR,
1084 			show_sf2_point, store_sf2_point, 2, 1);
1085 static SENSOR_DEVICE_ATTR_2(sf2_point3_fan1, S_IRUGO | S_IWUSR,
1086 			show_sf2_point, store_sf2_point, 3, 1);
1087 static SENSOR_DEVICE_ATTR_2(sf2_point4_fan1, S_IRUGO | S_IWUSR,
1088 			show_sf2_point, store_sf2_point, 4, 1);
1089 static SENSOR_DEVICE_ATTR_2(sf2_point1_fan2, S_IRUGO | S_IWUSR,
1090 			show_sf2_point, store_sf2_point, 1, 2);
1091 static SENSOR_DEVICE_ATTR_2(sf2_point2_fan2, S_IRUGO | S_IWUSR,
1092 			show_sf2_point, store_sf2_point, 2, 2);
1093 static SENSOR_DEVICE_ATTR_2(sf2_point3_fan2, S_IRUGO | S_IWUSR,
1094 			show_sf2_point, store_sf2_point, 3, 2);
1095 static SENSOR_DEVICE_ATTR_2(sf2_point4_fan2, S_IRUGO | S_IWUSR,
1096 			show_sf2_point, store_sf2_point, 4, 2);
1097 static SENSOR_DEVICE_ATTR_2(sf2_point1_fan3, S_IRUGO | S_IWUSR,
1098 			show_sf2_point, store_sf2_point, 1, 3);
1099 static SENSOR_DEVICE_ATTR_2(sf2_point2_fan3, S_IRUGO | S_IWUSR,
1100 			show_sf2_point, store_sf2_point, 2, 3);
1101 static SENSOR_DEVICE_ATTR_2(sf2_point3_fan3, S_IRUGO | S_IWUSR,
1102 			show_sf2_point, store_sf2_point, 3, 3);
1103 static SENSOR_DEVICE_ATTR_2(sf2_point4_fan3, S_IRUGO | S_IWUSR,
1104 			show_sf2_point, store_sf2_point, 4, 3);
1105 static SENSOR_DEVICE_ATTR_2(sf2_level1_fan1, S_IRUGO | S_IWUSR,
1106 			show_sf2_level, store_sf2_level, 1, 1);
1107 static SENSOR_DEVICE_ATTR_2(sf2_level2_fan1, S_IRUGO | S_IWUSR,
1108 			show_sf2_level, store_sf2_level, 2, 1);
1109 static SENSOR_DEVICE_ATTR_2(sf2_level3_fan1, S_IRUGO | S_IWUSR,
1110 			show_sf2_level, store_sf2_level, 3, 1);
1111 static SENSOR_DEVICE_ATTR_2(sf2_level1_fan2, S_IRUGO | S_IWUSR,
1112 			show_sf2_level, store_sf2_level, 1, 2);
1113 static SENSOR_DEVICE_ATTR_2(sf2_level2_fan2, S_IRUGO | S_IWUSR,
1114 			show_sf2_level, store_sf2_level, 2, 2);
1115 static SENSOR_DEVICE_ATTR_2(sf2_level3_fan2, S_IRUGO | S_IWUSR,
1116 			show_sf2_level, store_sf2_level, 3, 2);
1117 static SENSOR_DEVICE_ATTR_2(sf2_level1_fan3, S_IRUGO | S_IWUSR,
1118 			show_sf2_level, store_sf2_level, 1, 3);
1119 static SENSOR_DEVICE_ATTR_2(sf2_level2_fan3, S_IRUGO | S_IWUSR,
1120 			show_sf2_level, store_sf2_level, 2, 3);
1121 static SENSOR_DEVICE_ATTR_2(sf2_level3_fan3, S_IRUGO | S_IWUSR,
1122 			show_sf2_level, store_sf2_level, 3, 3);
1123 static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 1);
1124 static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 2);
1125 static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 3);
1126 static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 4);
1127 static SENSOR_DEVICE_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 5);
1128 static SENSOR_DEVICE_ATTR(fan6_input, S_IRUGO, show_fan, NULL, 6);
1129 static SENSOR_DEVICE_ATTR(fan7_input, S_IRUGO, show_fan, NULL, 7);
1130 static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO,
1131 			show_fan_min, store_fan_min, 1);
1132 static SENSOR_DEVICE_ATTR(fan2_min, S_IWUSR | S_IRUGO,
1133 			show_fan_min, store_fan_min, 2);
1134 static SENSOR_DEVICE_ATTR(fan3_min, S_IWUSR | S_IRUGO,
1135 			show_fan_min, store_fan_min, 3);
1136 static SENSOR_DEVICE_ATTR(fan4_min, S_IWUSR | S_IRUGO,
1137 			show_fan_min, store_fan_min, 4);
1138 static SENSOR_DEVICE_ATTR(fan5_min, S_IWUSR | S_IRUGO,
1139 			show_fan_min, store_fan_min, 5);
1140 static SENSOR_DEVICE_ATTR(fan6_min, S_IWUSR | S_IRUGO,
1141 			show_fan_min, store_fan_min, 6);
1142 static SENSOR_DEVICE_ATTR(fan7_min, S_IWUSR | S_IRUGO,
1143 			show_fan_min, store_fan_min, 7);
1144 static SENSOR_DEVICE_ATTR(fan1_div, S_IWUSR | S_IRUGO,
1145 			show_fan_div, store_fan_div, 1);
1146 static SENSOR_DEVICE_ATTR(fan2_div, S_IWUSR | S_IRUGO,
1147 			show_fan_div, store_fan_div, 2);
1148 static SENSOR_DEVICE_ATTR(fan3_div, S_IWUSR | S_IRUGO,
1149 			show_fan_div, store_fan_div, 3);
1150 static SENSOR_DEVICE_ATTR(fan4_div, S_IWUSR | S_IRUGO,
1151 			show_fan_div, store_fan_div, 4);
1152 static SENSOR_DEVICE_ATTR(fan5_div, S_IWUSR | S_IRUGO,
1153 			show_fan_div, store_fan_div, 5);
1154 static SENSOR_DEVICE_ATTR(fan6_div, S_IWUSR | S_IRUGO,
1155 			show_fan_div, store_fan_div, 6);
1156 static SENSOR_DEVICE_ATTR(fan7_div, S_IWUSR | S_IRUGO,
1157 			show_fan_div, store_fan_div, 7);
1158 
1159 static struct attribute *w83792d_attributes_fan[4][7] = {
1160 	{
1161 		&sensor_dev_attr_fan4_input.dev_attr.attr,
1162 		&sensor_dev_attr_fan4_min.dev_attr.attr,
1163 		&sensor_dev_attr_fan4_div.dev_attr.attr,
1164 		&sensor_dev_attr_fan4_alarm.dev_attr.attr,
1165 		&sensor_dev_attr_pwm4.dev_attr.attr,
1166 		&sensor_dev_attr_pwm4_mode.dev_attr.attr,
1167 		NULL
1168 	}, {
1169 		&sensor_dev_attr_fan5_input.dev_attr.attr,
1170 		&sensor_dev_attr_fan5_min.dev_attr.attr,
1171 		&sensor_dev_attr_fan5_div.dev_attr.attr,
1172 		&sensor_dev_attr_fan5_alarm.dev_attr.attr,
1173 		&sensor_dev_attr_pwm5.dev_attr.attr,
1174 		&sensor_dev_attr_pwm5_mode.dev_attr.attr,
1175 		NULL
1176 	}, {
1177 		&sensor_dev_attr_fan6_input.dev_attr.attr,
1178 		&sensor_dev_attr_fan6_min.dev_attr.attr,
1179 		&sensor_dev_attr_fan6_div.dev_attr.attr,
1180 		&sensor_dev_attr_fan6_alarm.dev_attr.attr,
1181 		&sensor_dev_attr_pwm6.dev_attr.attr,
1182 		&sensor_dev_attr_pwm6_mode.dev_attr.attr,
1183 		NULL
1184 	}, {
1185 		&sensor_dev_attr_fan7_input.dev_attr.attr,
1186 		&sensor_dev_attr_fan7_min.dev_attr.attr,
1187 		&sensor_dev_attr_fan7_div.dev_attr.attr,
1188 		&sensor_dev_attr_fan7_alarm.dev_attr.attr,
1189 		&sensor_dev_attr_pwm7.dev_attr.attr,
1190 		&sensor_dev_attr_pwm7_mode.dev_attr.attr,
1191 		NULL
1192 	}
1193 };
1194 
1195 static const struct attribute_group w83792d_group_fan[4] = {
1196 	{ .attrs = w83792d_attributes_fan[0] },
1197 	{ .attrs = w83792d_attributes_fan[1] },
1198 	{ .attrs = w83792d_attributes_fan[2] },
1199 	{ .attrs = w83792d_attributes_fan[3] },
1200 };
1201 
1202 static struct attribute *w83792d_attributes[] = {
1203 	&sensor_dev_attr_in0_input.dev_attr.attr,
1204 	&sensor_dev_attr_in0_max.dev_attr.attr,
1205 	&sensor_dev_attr_in0_min.dev_attr.attr,
1206 	&sensor_dev_attr_in1_input.dev_attr.attr,
1207 	&sensor_dev_attr_in1_max.dev_attr.attr,
1208 	&sensor_dev_attr_in1_min.dev_attr.attr,
1209 	&sensor_dev_attr_in2_input.dev_attr.attr,
1210 	&sensor_dev_attr_in2_max.dev_attr.attr,
1211 	&sensor_dev_attr_in2_min.dev_attr.attr,
1212 	&sensor_dev_attr_in3_input.dev_attr.attr,
1213 	&sensor_dev_attr_in3_max.dev_attr.attr,
1214 	&sensor_dev_attr_in3_min.dev_attr.attr,
1215 	&sensor_dev_attr_in4_input.dev_attr.attr,
1216 	&sensor_dev_attr_in4_max.dev_attr.attr,
1217 	&sensor_dev_attr_in4_min.dev_attr.attr,
1218 	&sensor_dev_attr_in5_input.dev_attr.attr,
1219 	&sensor_dev_attr_in5_max.dev_attr.attr,
1220 	&sensor_dev_attr_in5_min.dev_attr.attr,
1221 	&sensor_dev_attr_in6_input.dev_attr.attr,
1222 	&sensor_dev_attr_in6_max.dev_attr.attr,
1223 	&sensor_dev_attr_in6_min.dev_attr.attr,
1224 	&sensor_dev_attr_in7_input.dev_attr.attr,
1225 	&sensor_dev_attr_in7_max.dev_attr.attr,
1226 	&sensor_dev_attr_in7_min.dev_attr.attr,
1227 	&sensor_dev_attr_in8_input.dev_attr.attr,
1228 	&sensor_dev_attr_in8_max.dev_attr.attr,
1229 	&sensor_dev_attr_in8_min.dev_attr.attr,
1230 	&sensor_dev_attr_in0_alarm.dev_attr.attr,
1231 	&sensor_dev_attr_in1_alarm.dev_attr.attr,
1232 	&sensor_dev_attr_in2_alarm.dev_attr.attr,
1233 	&sensor_dev_attr_in3_alarm.dev_attr.attr,
1234 	&sensor_dev_attr_in4_alarm.dev_attr.attr,
1235 	&sensor_dev_attr_in5_alarm.dev_attr.attr,
1236 	&sensor_dev_attr_in6_alarm.dev_attr.attr,
1237 	&sensor_dev_attr_in7_alarm.dev_attr.attr,
1238 	&sensor_dev_attr_in8_alarm.dev_attr.attr,
1239 	&sensor_dev_attr_temp1_input.dev_attr.attr,
1240 	&sensor_dev_attr_temp1_max.dev_attr.attr,
1241 	&sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
1242 	&sensor_dev_attr_temp2_input.dev_attr.attr,
1243 	&sensor_dev_attr_temp2_max.dev_attr.attr,
1244 	&sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
1245 	&sensor_dev_attr_temp3_input.dev_attr.attr,
1246 	&sensor_dev_attr_temp3_max.dev_attr.attr,
1247 	&sensor_dev_attr_temp3_max_hyst.dev_attr.attr,
1248 	&sensor_dev_attr_temp1_alarm.dev_attr.attr,
1249 	&sensor_dev_attr_temp2_alarm.dev_attr.attr,
1250 	&sensor_dev_attr_temp3_alarm.dev_attr.attr,
1251 	&sensor_dev_attr_pwm1.dev_attr.attr,
1252 	&sensor_dev_attr_pwm1_mode.dev_attr.attr,
1253 	&sensor_dev_attr_pwm1_enable.dev_attr.attr,
1254 	&sensor_dev_attr_pwm2.dev_attr.attr,
1255 	&sensor_dev_attr_pwm2_mode.dev_attr.attr,
1256 	&sensor_dev_attr_pwm2_enable.dev_attr.attr,
1257 	&sensor_dev_attr_pwm3.dev_attr.attr,
1258 	&sensor_dev_attr_pwm3_mode.dev_attr.attr,
1259 	&sensor_dev_attr_pwm3_enable.dev_attr.attr,
1260 	&dev_attr_alarms.attr,
1261 	&dev_attr_intrusion0_alarm.attr,
1262 	&sensor_dev_attr_tolerance1.dev_attr.attr,
1263 	&sensor_dev_attr_thermal_cruise1.dev_attr.attr,
1264 	&sensor_dev_attr_tolerance2.dev_attr.attr,
1265 	&sensor_dev_attr_thermal_cruise2.dev_attr.attr,
1266 	&sensor_dev_attr_tolerance3.dev_attr.attr,
1267 	&sensor_dev_attr_thermal_cruise3.dev_attr.attr,
1268 	&sensor_dev_attr_sf2_point1_fan1.dev_attr.attr,
1269 	&sensor_dev_attr_sf2_point2_fan1.dev_attr.attr,
1270 	&sensor_dev_attr_sf2_point3_fan1.dev_attr.attr,
1271 	&sensor_dev_attr_sf2_point4_fan1.dev_attr.attr,
1272 	&sensor_dev_attr_sf2_point1_fan2.dev_attr.attr,
1273 	&sensor_dev_attr_sf2_point2_fan2.dev_attr.attr,
1274 	&sensor_dev_attr_sf2_point3_fan2.dev_attr.attr,
1275 	&sensor_dev_attr_sf2_point4_fan2.dev_attr.attr,
1276 	&sensor_dev_attr_sf2_point1_fan3.dev_attr.attr,
1277 	&sensor_dev_attr_sf2_point2_fan3.dev_attr.attr,
1278 	&sensor_dev_attr_sf2_point3_fan3.dev_attr.attr,
1279 	&sensor_dev_attr_sf2_point4_fan3.dev_attr.attr,
1280 	&sensor_dev_attr_sf2_level1_fan1.dev_attr.attr,
1281 	&sensor_dev_attr_sf2_level2_fan1.dev_attr.attr,
1282 	&sensor_dev_attr_sf2_level3_fan1.dev_attr.attr,
1283 	&sensor_dev_attr_sf2_level1_fan2.dev_attr.attr,
1284 	&sensor_dev_attr_sf2_level2_fan2.dev_attr.attr,
1285 	&sensor_dev_attr_sf2_level3_fan2.dev_attr.attr,
1286 	&sensor_dev_attr_sf2_level1_fan3.dev_attr.attr,
1287 	&sensor_dev_attr_sf2_level2_fan3.dev_attr.attr,
1288 	&sensor_dev_attr_sf2_level3_fan3.dev_attr.attr,
1289 	&sensor_dev_attr_fan1_input.dev_attr.attr,
1290 	&sensor_dev_attr_fan1_min.dev_attr.attr,
1291 	&sensor_dev_attr_fan1_div.dev_attr.attr,
1292 	&sensor_dev_attr_fan1_alarm.dev_attr.attr,
1293 	&sensor_dev_attr_fan2_input.dev_attr.attr,
1294 	&sensor_dev_attr_fan2_min.dev_attr.attr,
1295 	&sensor_dev_attr_fan2_div.dev_attr.attr,
1296 	&sensor_dev_attr_fan2_alarm.dev_attr.attr,
1297 	&sensor_dev_attr_fan3_input.dev_attr.attr,
1298 	&sensor_dev_attr_fan3_min.dev_attr.attr,
1299 	&sensor_dev_attr_fan3_div.dev_attr.attr,
1300 	&sensor_dev_attr_fan3_alarm.dev_attr.attr,
1301 	NULL
1302 };
1303 
1304 static const struct attribute_group w83792d_group = {
1305 	.attrs = w83792d_attributes,
1306 };
1307 
1308 /* Return 0 if detection is successful, -ENODEV otherwise */
1309 static int
w83792d_detect(struct i2c_client * client,struct i2c_board_info * info)1310 w83792d_detect(struct i2c_client *client, struct i2c_board_info *info)
1311 {
1312 	struct i2c_adapter *adapter = client->adapter;
1313 	int val1, val2;
1314 	unsigned short address = client->addr;
1315 
1316 	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1317 		return -ENODEV;
1318 
1319 	if (w83792d_read_value(client, W83792D_REG_CONFIG) & 0x80)
1320 		return -ENODEV;
1321 
1322 	val1 = w83792d_read_value(client, W83792D_REG_BANK);
1323 	val2 = w83792d_read_value(client, W83792D_REG_CHIPMAN);
1324 	/* Check for Winbond ID if in bank 0 */
1325 	if (!(val1 & 0x07)) {  /* is Bank0 */
1326 		if ((!(val1 & 0x80) && val2 != 0xa3) ||
1327 		    ((val1 & 0x80) && val2 != 0x5c))
1328 			return -ENODEV;
1329 	}
1330 	/*
1331 	 * If Winbond chip, address of chip and W83792D_REG_I2C_ADDR
1332 	 * should match
1333 	 */
1334 	if (w83792d_read_value(client, W83792D_REG_I2C_ADDR) != address)
1335 		return -ENODEV;
1336 
1337 	/*  Put it now into bank 0 and Vendor ID High Byte */
1338 	w83792d_write_value(client,
1339 			    W83792D_REG_BANK,
1340 			    (w83792d_read_value(client,
1341 				W83792D_REG_BANK) & 0x78) | 0x80);
1342 
1343 	/* Determine the chip type. */
1344 	val1 = w83792d_read_value(client, W83792D_REG_WCHIPID);
1345 	val2 = w83792d_read_value(client, W83792D_REG_CHIPMAN);
1346 	if (val1 != 0x7a || val2 != 0x5c)
1347 		return -ENODEV;
1348 
1349 	strscpy(info->type, "w83792d", I2C_NAME_SIZE);
1350 
1351 	return 0;
1352 }
1353 
1354 static int
w83792d_probe(struct i2c_client * client)1355 w83792d_probe(struct i2c_client *client)
1356 {
1357 	struct w83792d_data *data;
1358 	struct device *dev = &client->dev;
1359 	int i, val1, err;
1360 
1361 	data = devm_kzalloc(dev, sizeof(struct w83792d_data), GFP_KERNEL);
1362 	if (!data)
1363 		return -ENOMEM;
1364 
1365 	i2c_set_clientdata(client, data);
1366 	mutex_init(&data->update_lock);
1367 
1368 	err = w83792d_detect_subclients(client);
1369 	if (err)
1370 		return err;
1371 
1372 	/* Initialize the chip */
1373 	w83792d_init_client(client);
1374 
1375 	/* A few vars need to be filled upon startup */
1376 	for (i = 0; i < 7; i++) {
1377 		data->fan_min[i] = w83792d_read_value(client,
1378 					W83792D_REG_FAN_MIN[i]);
1379 	}
1380 
1381 	/* Register sysfs hooks */
1382 	err = sysfs_create_group(&dev->kobj, &w83792d_group);
1383 	if (err)
1384 		return err;
1385 
1386 	/*
1387 	 * Read GPIO enable register to check if pins for fan 4,5 are used as
1388 	 * GPIO
1389 	 */
1390 	val1 = w83792d_read_value(client, W83792D_REG_GPIO_EN);
1391 
1392 	if (!(val1 & 0x40)) {
1393 		err = sysfs_create_group(&dev->kobj, &w83792d_group_fan[0]);
1394 		if (err)
1395 			goto exit_remove_files;
1396 	}
1397 
1398 	if (!(val1 & 0x20)) {
1399 		err = sysfs_create_group(&dev->kobj, &w83792d_group_fan[1]);
1400 		if (err)
1401 			goto exit_remove_files;
1402 	}
1403 
1404 	val1 = w83792d_read_value(client, W83792D_REG_PIN);
1405 	if (val1 & 0x40) {
1406 		err = sysfs_create_group(&dev->kobj, &w83792d_group_fan[2]);
1407 		if (err)
1408 			goto exit_remove_files;
1409 	}
1410 
1411 	if (val1 & 0x04) {
1412 		err = sysfs_create_group(&dev->kobj, &w83792d_group_fan[3]);
1413 		if (err)
1414 			goto exit_remove_files;
1415 	}
1416 
1417 	data->hwmon_dev = hwmon_device_register(dev);
1418 	if (IS_ERR(data->hwmon_dev)) {
1419 		err = PTR_ERR(data->hwmon_dev);
1420 		goto exit_remove_files;
1421 	}
1422 
1423 	return 0;
1424 
1425 exit_remove_files:
1426 	sysfs_remove_group(&dev->kobj, &w83792d_group);
1427 	for (i = 0; i < ARRAY_SIZE(w83792d_group_fan); i++)
1428 		sysfs_remove_group(&dev->kobj, &w83792d_group_fan[i]);
1429 	return err;
1430 }
1431 
1432 static void
w83792d_remove(struct i2c_client * client)1433 w83792d_remove(struct i2c_client *client)
1434 {
1435 	struct w83792d_data *data = i2c_get_clientdata(client);
1436 	int i;
1437 
1438 	hwmon_device_unregister(data->hwmon_dev);
1439 	sysfs_remove_group(&client->dev.kobj, &w83792d_group);
1440 	for (i = 0; i < ARRAY_SIZE(w83792d_group_fan); i++)
1441 		sysfs_remove_group(&client->dev.kobj,
1442 				   &w83792d_group_fan[i]);
1443 }
1444 
1445 static void
w83792d_init_client(struct i2c_client * client)1446 w83792d_init_client(struct i2c_client *client)
1447 {
1448 	u8 temp2_cfg, temp3_cfg, vid_in_b;
1449 
1450 	if (init)
1451 		w83792d_write_value(client, W83792D_REG_CONFIG, 0x80);
1452 
1453 	/*
1454 	 * Clear the bit6 of W83792D_REG_VID_IN_B(set it into 0):
1455 	 * W83792D_REG_VID_IN_B bit6 = 0: the high/low limit of
1456 	 * vin0/vin1 can be modified by user;
1457 	 * W83792D_REG_VID_IN_B bit6 = 1: the high/low limit of
1458 	 * vin0/vin1 auto-updated, can NOT be modified by user.
1459 	 */
1460 	vid_in_b = w83792d_read_value(client, W83792D_REG_VID_IN_B);
1461 	w83792d_write_value(client, W83792D_REG_VID_IN_B,
1462 			    vid_in_b & 0xbf);
1463 
1464 	temp2_cfg = w83792d_read_value(client, W83792D_REG_TEMP2_CONFIG);
1465 	temp3_cfg = w83792d_read_value(client, W83792D_REG_TEMP3_CONFIG);
1466 	w83792d_write_value(client, W83792D_REG_TEMP2_CONFIG,
1467 				temp2_cfg & 0xe6);
1468 	w83792d_write_value(client, W83792D_REG_TEMP3_CONFIG,
1469 				temp3_cfg & 0xe6);
1470 
1471 	/* Start monitoring */
1472 	w83792d_write_value(client, W83792D_REG_CONFIG,
1473 			    (w83792d_read_value(client,
1474 						W83792D_REG_CONFIG) & 0xf7)
1475 			    | 0x01);
1476 }
1477 
w83792d_update_device(struct device * dev)1478 static struct w83792d_data *w83792d_update_device(struct device *dev)
1479 {
1480 	struct i2c_client *client = to_i2c_client(dev);
1481 	struct w83792d_data *data = i2c_get_clientdata(client);
1482 	int i, j;
1483 	u8 reg_array_tmp[4], reg_tmp;
1484 
1485 	mutex_lock(&data->update_lock);
1486 
1487 	if (time_after
1488 	    (jiffies - data->last_updated, (unsigned long) (HZ * 3))
1489 	    || time_before(jiffies, data->last_updated) || !data->valid) {
1490 		dev_dbg(dev, "Starting device update\n");
1491 
1492 		/* Update the voltages measured value and limits */
1493 		for (i = 0; i < 9; i++) {
1494 			data->in[i] = w83792d_read_value(client,
1495 						W83792D_REG_IN[i]);
1496 			data->in_max[i] = w83792d_read_value(client,
1497 						W83792D_REG_IN_MAX[i]);
1498 			data->in_min[i] = w83792d_read_value(client,
1499 						W83792D_REG_IN_MIN[i]);
1500 		}
1501 		data->low_bits = w83792d_read_value(client,
1502 						W83792D_REG_LOW_BITS1) +
1503 				 (w83792d_read_value(client,
1504 						W83792D_REG_LOW_BITS2) << 8);
1505 		for (i = 0; i < 7; i++) {
1506 			/* Update the Fan measured value and limits */
1507 			data->fan[i] = w83792d_read_value(client,
1508 						W83792D_REG_FAN[i]);
1509 			data->fan_min[i] = w83792d_read_value(client,
1510 						W83792D_REG_FAN_MIN[i]);
1511 			/* Update the PWM/DC Value and PWM/DC flag */
1512 			data->pwm[i] = w83792d_read_value(client,
1513 						W83792D_REG_PWM[i]);
1514 		}
1515 
1516 		reg_tmp = w83792d_read_value(client, W83792D_REG_FAN_CFG);
1517 		data->pwmenable[0] = reg_tmp & 0x03;
1518 		data->pwmenable[1] = (reg_tmp>>2) & 0x03;
1519 		data->pwmenable[2] = (reg_tmp>>4) & 0x03;
1520 
1521 		for (i = 0; i < 3; i++) {
1522 			data->temp1[i] = w83792d_read_value(client,
1523 							W83792D_REG_TEMP1[i]);
1524 		}
1525 		for (i = 0; i < 2; i++) {
1526 			for (j = 0; j < 6; j++) {
1527 				data->temp_add[i][j] = w83792d_read_value(
1528 					client, W83792D_REG_TEMP_ADD[i][j]);
1529 			}
1530 		}
1531 
1532 		/* Update the Fan Divisor */
1533 		for (i = 0; i < 4; i++) {
1534 			reg_array_tmp[i] = w83792d_read_value(client,
1535 							W83792D_REG_FAN_DIV[i]);
1536 		}
1537 		data->fan_div[0] = reg_array_tmp[0] & 0x07;
1538 		data->fan_div[1] = (reg_array_tmp[0] >> 4) & 0x07;
1539 		data->fan_div[2] = reg_array_tmp[1] & 0x07;
1540 		data->fan_div[3] = (reg_array_tmp[1] >> 4) & 0x07;
1541 		data->fan_div[4] = reg_array_tmp[2] & 0x07;
1542 		data->fan_div[5] = (reg_array_tmp[2] >> 4) & 0x07;
1543 		data->fan_div[6] = reg_array_tmp[3] & 0x07;
1544 
1545 		/* Update the realtime status */
1546 		data->alarms = w83792d_read_value(client, W83792D_REG_ALARM1) +
1547 			(w83792d_read_value(client, W83792D_REG_ALARM2) << 8) +
1548 			(w83792d_read_value(client, W83792D_REG_ALARM3) << 16);
1549 
1550 		/* Update CaseOpen status and it's CLR_CHS. */
1551 		data->chassis = (w83792d_read_value(client,
1552 			W83792D_REG_CHASSIS) >> 5) & 0x01;
1553 
1554 		/* Update Thermal Cruise/Smart Fan I target value */
1555 		for (i = 0; i < 3; i++) {
1556 			data->thermal_cruise[i] =
1557 				w83792d_read_value(client,
1558 				W83792D_REG_THERMAL[i]) & 0x7f;
1559 		}
1560 
1561 		/* Update Smart Fan I/II tolerance */
1562 		reg_tmp = w83792d_read_value(client, W83792D_REG_TOLERANCE[0]);
1563 		data->tolerance[0] = reg_tmp & 0x0f;
1564 		data->tolerance[1] = (reg_tmp >> 4) & 0x0f;
1565 		data->tolerance[2] = w83792d_read_value(client,
1566 					W83792D_REG_TOLERANCE[2]) & 0x0f;
1567 
1568 		/* Update Smart Fan II temperature points */
1569 		for (i = 0; i < 3; i++) {
1570 			for (j = 0; j < 4; j++) {
1571 				data->sf2_points[i][j]
1572 				  = w83792d_read_value(client,
1573 					W83792D_REG_POINTS[i][j]) & 0x7f;
1574 			}
1575 		}
1576 
1577 		/* Update Smart Fan II duty cycle levels */
1578 		for (i = 0; i < 3; i++) {
1579 			reg_tmp = w83792d_read_value(client,
1580 						W83792D_REG_LEVELS[i][0]);
1581 			data->sf2_levels[i][0] = reg_tmp & 0x0f;
1582 			data->sf2_levels[i][1] = (reg_tmp >> 4) & 0x0f;
1583 			reg_tmp = w83792d_read_value(client,
1584 						W83792D_REG_LEVELS[i][2]);
1585 			data->sf2_levels[i][2] = (reg_tmp >> 4) & 0x0f;
1586 			data->sf2_levels[i][3] = reg_tmp & 0x0f;
1587 		}
1588 
1589 		data->last_updated = jiffies;
1590 		data->valid = true;
1591 	}
1592 
1593 	mutex_unlock(&data->update_lock);
1594 
1595 #ifdef DEBUG
1596 	w83792d_print_debug(data, dev);
1597 #endif
1598 
1599 	return data;
1600 }
1601 
1602 #ifdef DEBUG
w83792d_print_debug(struct w83792d_data * data,struct device * dev)1603 static void w83792d_print_debug(struct w83792d_data *data, struct device *dev)
1604 {
1605 	int i = 0, j = 0;
1606 	dev_dbg(dev, "==========The following is the debug message...========\n");
1607 	dev_dbg(dev, "9 set of Voltages: =====>\n");
1608 	for (i = 0; i < 9; i++) {
1609 		dev_dbg(dev, "vin[%d] is: 0x%x\n", i, data->in[i]);
1610 		dev_dbg(dev, "vin[%d] max is: 0x%x\n", i, data->in_max[i]);
1611 		dev_dbg(dev, "vin[%d] min is: 0x%x\n", i, data->in_min[i]);
1612 	}
1613 	dev_dbg(dev, "Low Bit1 is: 0x%x\n", data->low_bits & 0xff);
1614 	dev_dbg(dev, "Low Bit2 is: 0x%x\n", data->low_bits >> 8);
1615 	dev_dbg(dev, "7 set of Fan Counts and Duty Cycles: =====>\n");
1616 	for (i = 0; i < 7; i++) {
1617 		dev_dbg(dev, "fan[%d] is: 0x%x\n", i, data->fan[i]);
1618 		dev_dbg(dev, "fan[%d] min is: 0x%x\n", i, data->fan_min[i]);
1619 		dev_dbg(dev, "pwm[%d]     is: 0x%x\n", i, data->pwm[i]);
1620 	}
1621 	dev_dbg(dev, "3 set of Temperatures: =====>\n");
1622 	for (i = 0; i < 3; i++)
1623 		dev_dbg(dev, "temp1[%d] is: 0x%x\n", i, data->temp1[i]);
1624 
1625 	for (i = 0; i < 2; i++) {
1626 		for (j = 0; j < 6; j++) {
1627 			dev_dbg(dev, "temp_add[%d][%d] is: 0x%x\n", i, j,
1628 							data->temp_add[i][j]);
1629 		}
1630 	}
1631 
1632 	for (i = 0; i < 7; i++)
1633 		dev_dbg(dev, "fan_div[%d] is: 0x%x\n", i, data->fan_div[i]);
1634 
1635 	dev_dbg(dev, "==========End of the debug message...================\n");
1636 	dev_dbg(dev, "\n");
1637 }
1638 #endif
1639 
1640 module_i2c_driver(w83792d_driver);
1641 
1642 MODULE_AUTHOR("Shane Huang (Winbond)");
1643 MODULE_DESCRIPTION("W83792AD/D driver for linux-2.6");
1644 MODULE_LICENSE("GPL");
1645