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Merge tag 'trace-printf-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/trace...
[drm/drm-misc.git] / drivers / hwmon / w83791d.c
blobace854b370a0542c2df06b6970d2ac0541625a2c
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * w83791d.c - Part of lm_sensors, Linux kernel modules for hardware
4 * monitoring
5 *
6 * Copyright (C) 2006-2007 Charles Spirakis <bezaur@gmail.com>
7 */
8
9 /*
10 * Supports following chips:
11 *
12 * Chip #vin #fanin #pwm #temp wchipid vendid i2c ISA
13 * w83791d 10 5 5 3 0x71 0x5ca3 yes no
14 *
15 * The w83791d chip appears to be part way between the 83781d and the
16 * 83792d. Thus, this file is derived from both the w83792d.c and
17 * w83781d.c files.
18 *
19 * The w83791g chip is the same as the w83791d but lead-free.
20 */
21
22 #include <linux/module.h>
23 #include <linux/init.h>
24 #include <linux/slab.h>
25 #include <linux/i2c.h>
26 #include <linux/hwmon.h>
27 #include <linux/hwmon-vid.h>
28 #include <linux/hwmon-sysfs.h>
29 #include <linux/err.h>
30 #include <linux/mutex.h>
31 #include <linux/jiffies.h>
32
33 #define NUMBER_OF_VIN 10
34 #define NUMBER_OF_FANIN 5
35 #define NUMBER_OF_TEMPIN 3
36 #define NUMBER_OF_PWM 5
37
38 /* Addresses to scan */
39 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f,
40 I2C_CLIENT_END };
41
42 /* Insmod parameters */
43
44 static unsigned short force_subclients[4];
45 module_param_array(force_subclients, short, NULL, 0);
46 MODULE_PARM_DESC(force_subclients,
47 "List of subclient addresses: {bus, clientaddr, subclientaddr1, subclientaddr2}");
48
49 static bool reset;
50 module_param(reset, bool, 0);
51 MODULE_PARM_DESC(reset, "Set to one to force a hardware chip reset");
52
53 static bool init;
54 module_param(init, bool, 0);
55 MODULE_PARM_DESC(init, "Set to one to force extra software initialization");
56
57 /* The W83791D registers */
58 static const u8 W83791D_REG_IN[NUMBER_OF_VIN] = {
59 0x20, /* VCOREA in DataSheet */
60 0x21, /* VINR0 in DataSheet */
61 0x22, /* +3.3VIN in DataSheet */
62 0x23, /* VDD5V in DataSheet */
63 0x24, /* +12VIN in DataSheet */
64 0x25, /* -12VIN in DataSheet */
65 0x26, /* -5VIN in DataSheet */
66 0xB0, /* 5VSB in DataSheet */
67 0xB1, /* VBAT in DataSheet */
68 0xB2 /* VINR1 in DataSheet */
69 };
70
71 static const u8 W83791D_REG_IN_MAX[NUMBER_OF_VIN] = {
72 0x2B, /* VCOREA High Limit in DataSheet */
73 0x2D, /* VINR0 High Limit in DataSheet */
74 0x2F, /* +3.3VIN High Limit in DataSheet */
75 0x31, /* VDD5V High Limit in DataSheet */
76 0x33, /* +12VIN High Limit in DataSheet */
77 0x35, /* -12VIN High Limit in DataSheet */
78 0x37, /* -5VIN High Limit in DataSheet */
79 0xB4, /* 5VSB High Limit in DataSheet */
80 0xB6, /* VBAT High Limit in DataSheet */
81 0xB8 /* VINR1 High Limit in DataSheet */
82 };
83 static const u8 W83791D_REG_IN_MIN[NUMBER_OF_VIN] = {
84 0x2C, /* VCOREA Low Limit in DataSheet */
85 0x2E, /* VINR0 Low Limit in DataSheet */
86 0x30, /* +3.3VIN Low Limit in DataSheet */
87 0x32, /* VDD5V Low Limit in DataSheet */
88 0x34, /* +12VIN Low Limit in DataSheet */
89 0x36, /* -12VIN Low Limit in DataSheet */
90 0x38, /* -5VIN Low Limit in DataSheet */
91 0xB5, /* 5VSB Low Limit in DataSheet */
92 0xB7, /* VBAT Low Limit in DataSheet */
93 0xB9 /* VINR1 Low Limit in DataSheet */
94 };
95 static const u8 W83791D_REG_FAN[NUMBER_OF_FANIN] = {
96 0x28, /* FAN 1 Count in DataSheet */
97 0x29, /* FAN 2 Count in DataSheet */
98 0x2A, /* FAN 3 Count in DataSheet */
99 0xBA, /* FAN 4 Count in DataSheet */
100 0xBB, /* FAN 5 Count in DataSheet */
101 };
102 static const u8 W83791D_REG_FAN_MIN[NUMBER_OF_FANIN] = {
103 0x3B, /* FAN 1 Count Low Limit in DataSheet */
104 0x3C, /* FAN 2 Count Low Limit in DataSheet */
105 0x3D, /* FAN 3 Count Low Limit in DataSheet */
106 0xBC, /* FAN 4 Count Low Limit in DataSheet */
107 0xBD, /* FAN 5 Count Low Limit in DataSheet */
108 };
109
110 static const u8 W83791D_REG_PWM[NUMBER_OF_PWM] = {
111 0x81, /* PWM 1 duty cycle register in DataSheet */
112 0x83, /* PWM 2 duty cycle register in DataSheet */
113 0x94, /* PWM 3 duty cycle register in DataSheet */
114 0xA0, /* PWM 4 duty cycle register in DataSheet */
115 0xA1, /* PWM 5 duty cycle register in DataSheet */
116 };
117
118 static const u8 W83791D_REG_TEMP_TARGET[3] = {
119 0x85, /* PWM 1 target temperature for temp 1 */
120 0x86, /* PWM 2 target temperature for temp 2 */
121 0x96, /* PWM 3 target temperature for temp 3 */
122 };
123
124 static const u8 W83791D_REG_TEMP_TOL[2] = {
125 0x87, /* PWM 1/2 temperature tolerance */
126 0x97, /* PWM 3 temperature tolerance */
127 };
128
129 static const u8 W83791D_REG_FAN_CFG[2] = {
130 0x84, /* FAN 1/2 configuration */
131 0x95, /* FAN 3 configuration */
132 };
133
134 static const u8 W83791D_REG_FAN_DIV[3] = {
135 0x47, /* contains FAN1 and FAN2 Divisor */
136 0x4b, /* contains FAN3 Divisor */
137 0x5C, /* contains FAN4 and FAN5 Divisor */
138 };
139
140 #define W83791D_REG_BANK 0x4E
141 #define W83791D_REG_TEMP2_CONFIG 0xC2
142 #define W83791D_REG_TEMP3_CONFIG 0xCA
143
144 static const u8 W83791D_REG_TEMP1[3] = {
145 0x27, /* TEMP 1 in DataSheet */
146 0x39, /* TEMP 1 Over in DataSheet */
147 0x3A, /* TEMP 1 Hyst in DataSheet */
148 };
149
150 static const u8 W83791D_REG_TEMP_ADD[2][6] = {
151 {0xC0, /* TEMP 2 in DataSheet */
152 0xC1, /* TEMP 2(0.5 deg) in DataSheet */
153 0xC5, /* TEMP 2 Over High part in DataSheet */
154 0xC6, /* TEMP 2 Over Low part in DataSheet */
155 0xC3, /* TEMP 2 Thyst High part in DataSheet */
156 0xC4}, /* TEMP 2 Thyst Low part in DataSheet */
157 {0xC8, /* TEMP 3 in DataSheet */
158 0xC9, /* TEMP 3(0.5 deg) in DataSheet */
159 0xCD, /* TEMP 3 Over High part in DataSheet */
160 0xCE, /* TEMP 3 Over Low part in DataSheet */
161 0xCB, /* TEMP 3 Thyst High part in DataSheet */
162 0xCC} /* TEMP 3 Thyst Low part in DataSheet */
163 };
164
165 #define W83791D_REG_BEEP_CONFIG 0x4D
166
167 static const u8 W83791D_REG_BEEP_CTRL[3] = {
168 0x56, /* BEEP Control Register 1 */
169 0x57, /* BEEP Control Register 2 */
170 0xA3, /* BEEP Control Register 3 */
171 };
172
173 #define W83791D_REG_GPIO 0x15
174 #define W83791D_REG_CONFIG 0x40
175 #define W83791D_REG_VID_FANDIV 0x47
176 #define W83791D_REG_DID_VID4 0x49
177 #define W83791D_REG_WCHIPID 0x58
178 #define W83791D_REG_CHIPMAN 0x4F
179 #define W83791D_REG_PIN 0x4B
180 #define W83791D_REG_I2C_SUBADDR 0x4A
181
182 #define W83791D_REG_ALARM1 0xA9 /* realtime status register1 */
183 #define W83791D_REG_ALARM2 0xAA /* realtime status register2 */
184 #define W83791D_REG_ALARM3 0xAB /* realtime status register3 */
185
186 #define W83791D_REG_VBAT 0x5D
187 #define W83791D_REG_I2C_ADDR 0x48
188
189 /*
190 * The SMBus locks itself. The Winbond W83791D has a bank select register
191 * (index 0x4e), but the driver only accesses registers in bank 0. Since
192 * we don't switch banks, we don't need any special code to handle
193 * locking access between bank switches
194 */
195 static inline int w83791d_read(struct i2c_client *client, u8 reg)
196 {
197 return i2c_smbus_read_byte_data(client, reg);
198 }
199
200 static inline int w83791d_write(struct i2c_client *client, u8 reg, u8 value)
201 {
202 return i2c_smbus_write_byte_data(client, reg, value);
203 }
204
205 /*
206 * The analog voltage inputs have 16mV LSB. Since the sysfs output is
207 * in mV as would be measured on the chip input pin, need to just
208 * multiply/divide by 16 to translate from/to register values.
209 */
210 #define IN_TO_REG(val) (clamp_val((((val) + 8) / 16), 0, 255))
211 #define IN_FROM_REG(val) ((val) * 16)
212
213 static u8 fan_to_reg(long rpm, int div)
214 {
215 if (rpm == 0)
216 return 255;
217 rpm = clamp_val(rpm, 1, 1000000);
218 return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
219 }
220
221 #define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : \
222 ((val) == 255 ? 0 : \
223 1350000 / ((val) * (div))))
224
225 /* for temp1 which is 8-bit resolution, LSB = 1 degree Celsius */
226 #define TEMP1_FROM_REG(val) ((val) * 1000)
227 #define TEMP1_TO_REG(val) ((val) <= -128000 ? -128 : \
228 (val) >= 127000 ? 127 : \
229 (val) < 0 ? ((val) - 500) / 1000 : \
230 ((val) + 500) / 1000)
231
232 /*
233 * for temp2 and temp3 which are 9-bit resolution, LSB = 0.5 degree Celsius
234 * Assumes the top 8 bits are the integral amount and the bottom 8 bits
235 * are the fractional amount. Since we only have 0.5 degree resolution,
236 * the bottom 7 bits will always be zero
237 */
238 #define TEMP23_FROM_REG(val) ((val) / 128 * 500)
239 #define TEMP23_TO_REG(val) (DIV_ROUND_CLOSEST(clamp_val((val), -128000, \
240 127500), 500) * 128)
241
242 /* for thermal cruise target temp, 7-bits, LSB = 1 degree Celsius */
243 #define TARGET_TEMP_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val((val), 0, 127000), \
244 1000)
245
246 /* for thermal cruise temp tolerance, 4-bits, LSB = 1 degree Celsius */
247 #define TOL_TEMP_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val((val), 0, 15000), \
248 1000)
249
250 #define BEEP_MASK_TO_REG(val) ((val) & 0xffffff)
251 #define BEEP_MASK_FROM_REG(val) ((val) & 0xffffff)
252
253 #define DIV_FROM_REG(val) (1 << (val))
254
255 static u8 div_to_reg(int nr, long val)
256 {
257 int i;
258
259 /* fan divisors max out at 128 */
260 val = clamp_val(val, 1, 128) >> 1;
261 for (i = 0; i < 7; i++) {
262 if (val == 0)
263 break;
264 val >>= 1;
265 }
266 return (u8) i;
267 }
268
269 struct w83791d_data {
270 struct device *hwmon_dev;
271 struct mutex update_lock;
272
273 bool valid; /* true if following fields are valid */
274 unsigned long last_updated; /* In jiffies */
275
276 /* volts */
277 u8 in[NUMBER_OF_VIN]; /* Register value */
278 u8 in_max[NUMBER_OF_VIN]; /* Register value */
279 u8 in_min[NUMBER_OF_VIN]; /* Register value */
280
281 /* fans */
282 u8 fan[NUMBER_OF_FANIN]; /* Register value */
283 u8 fan_min[NUMBER_OF_FANIN]; /* Register value */
284 u8 fan_div[NUMBER_OF_FANIN]; /* Register encoding, shifted right */
285
286 /* Temperature sensors */
287
288 s8 temp1[3]; /* current, over, thyst */
289 s16 temp_add[2][3]; /* fixed point value. Top 8 bits are the
290 * integral part, bottom 8 bits are the
291 * fractional part. We only use the top
292 * 9 bits as the resolution is only
293 * to the 0.5 degree C...
294 * two sensors with three values
295 * (cur, over, hyst)
296 */
297
298 /* PWMs */
299 u8 pwm[5]; /* pwm duty cycle */
300 u8 pwm_enable[3]; /* pwm enable status for fan 1-3
301 * (fan 4-5 only support manual mode)
302 */
303
304 u8 temp_target[3]; /* pwm 1-3 target temperature */
305 u8 temp_tolerance[3]; /* pwm 1-3 temperature tolerance */
306
307 /* Misc */
308 u32 alarms; /* realtime status register encoding,combined */
309 u8 beep_enable; /* Global beep enable */
310 u32 beep_mask; /* Mask off specific beeps */
311 u8 vid; /* Register encoding, combined */
312 u8 vrm; /* hwmon-vid */
313 };
314
315 static int w83791d_probe(struct i2c_client *client);
316 static int w83791d_detect(struct i2c_client *client,
317 struct i2c_board_info *info);
318 static void w83791d_remove(struct i2c_client *client);
319
320 static int w83791d_read(struct i2c_client *client, u8 reg);
321 static int w83791d_write(struct i2c_client *client, u8 reg, u8 value);
322 static struct w83791d_data *w83791d_update_device(struct device *dev);
323
324 #ifdef DEBUG
325 static void w83791d_print_debug(struct w83791d_data *data, struct device *dev);
326 #endif
327
328 static void w83791d_init_client(struct i2c_client *client);
329
330 static const struct i2c_device_id w83791d_id[] = {
331 { "w83791d" },
332 { }
333 };
334 MODULE_DEVICE_TABLE(i2c, w83791d_id);
335
336 static struct i2c_driver w83791d_driver = {
337 .class = I2C_CLASS_HWMON,
338 .driver = {
339 .name = "w83791d",
340 },
341 .probe = w83791d_probe,
342 .remove = w83791d_remove,
343 .id_table = w83791d_id,
344 .detect = w83791d_detect,
345 .address_list = normal_i2c,
346 };
347
348 /* following are the sysfs callback functions */
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 struct w83791d_data *data = w83791d_update_device(dev); \
356 int nr = sensor_attr->index; \
357 return sprintf(buf, "%d\n", IN_FROM_REG(data->reg[nr])); \
358 }
359
360 show_in_reg(in);
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 struct i2c_client *client = to_i2c_client(dev); \
372 struct w83791d_data *data = i2c_get_clientdata(client); \
373 int nr = sensor_attr->index; \
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] = IN_TO_REG(val); \
380 w83791d_write(client, W83791D_REG_IN_##REG[nr], data->in_##reg[nr]); \
381 mutex_unlock(&data->update_lock); \
382 \
383 return count; \
384 }
385 store_in_reg(MIN, min);
386 store_in_reg(MAX, max);
387
388 static struct sensor_device_attribute sda_in_input[] = {
389 SENSOR_ATTR(in0_input, S_IRUGO, show_in, NULL, 0),
390 SENSOR_ATTR(in1_input, S_IRUGO, show_in, NULL, 1),
391 SENSOR_ATTR(in2_input, S_IRUGO, show_in, NULL, 2),
392 SENSOR_ATTR(in3_input, S_IRUGO, show_in, NULL, 3),
393 SENSOR_ATTR(in4_input, S_IRUGO, show_in, NULL, 4),
394 SENSOR_ATTR(in5_input, S_IRUGO, show_in, NULL, 5),
395 SENSOR_ATTR(in6_input, S_IRUGO, show_in, NULL, 6),
396 SENSOR_ATTR(in7_input, S_IRUGO, show_in, NULL, 7),
397 SENSOR_ATTR(in8_input, S_IRUGO, show_in, NULL, 8),
398 SENSOR_ATTR(in9_input, S_IRUGO, show_in, NULL, 9),
399 };
400
401 static struct sensor_device_attribute sda_in_min[] = {
402 SENSOR_ATTR(in0_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 0),
403 SENSOR_ATTR(in1_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 1),
404 SENSOR_ATTR(in2_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 2),
405 SENSOR_ATTR(in3_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 3),
406 SENSOR_ATTR(in4_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 4),
407 SENSOR_ATTR(in5_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 5),
408 SENSOR_ATTR(in6_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 6),
409 SENSOR_ATTR(in7_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 7),
410 SENSOR_ATTR(in8_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 8),
411 SENSOR_ATTR(in9_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 9),
412 };
413
414 static struct sensor_device_attribute sda_in_max[] = {
415 SENSOR_ATTR(in0_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 0),
416 SENSOR_ATTR(in1_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 1),
417 SENSOR_ATTR(in2_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 2),
418 SENSOR_ATTR(in3_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 3),
419 SENSOR_ATTR(in4_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 4),
420 SENSOR_ATTR(in5_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 5),
421 SENSOR_ATTR(in6_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 6),
422 SENSOR_ATTR(in7_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 7),
423 SENSOR_ATTR(in8_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 8),
424 SENSOR_ATTR(in9_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 9),
425 };
426
427
428 static ssize_t show_beep(struct device *dev, struct device_attribute *attr,
429 char *buf)
430 {
431 struct sensor_device_attribute *sensor_attr =
432 to_sensor_dev_attr(attr);
433 struct w83791d_data *data = w83791d_update_device(dev);
434 int bitnr = sensor_attr->index;
435
436 return sprintf(buf, "%d\n", (data->beep_mask >> bitnr) & 1);
437 }
438
439 static ssize_t store_beep(struct device *dev, struct device_attribute *attr,
440 const char *buf, size_t count)
441 {
442 struct sensor_device_attribute *sensor_attr =
443 to_sensor_dev_attr(attr);
444 struct i2c_client *client = to_i2c_client(dev);
445 struct w83791d_data *data = i2c_get_clientdata(client);
446 int bitnr = sensor_attr->index;
447 int bytenr = bitnr / 8;
448 unsigned long val;
449 int err;
450
451 err = kstrtoul(buf, 10, &val);
452 if (err)
453 return err;
454
455 val = val ? 1 : 0;
456
457 mutex_lock(&data->update_lock);
458
459 data->beep_mask &= ~(0xff << (bytenr * 8));
460 data->beep_mask |= w83791d_read(client, W83791D_REG_BEEP_CTRL[bytenr])
461 << (bytenr * 8);
462
463 data->beep_mask &= ~(1 << bitnr);
464 data->beep_mask |= val << bitnr;
465
466 w83791d_write(client, W83791D_REG_BEEP_CTRL[bytenr],
467 (data->beep_mask >> (bytenr * 8)) & 0xff);
468
469 mutex_unlock(&data->update_lock);
470
471 return count;
472 }
473
474 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
475 char *buf)
476 {
477 struct sensor_device_attribute *sensor_attr =
478 to_sensor_dev_attr(attr);
479 struct w83791d_data *data = w83791d_update_device(dev);
480 int bitnr = sensor_attr->index;
481
482 return sprintf(buf, "%d\n", (data->alarms >> bitnr) & 1);
483 }
484
485 /*
486 * Note: The bitmask for the beep enable/disable is different than
487 * the bitmask for the alarm.
488 */
489 static struct sensor_device_attribute sda_in_beep[] = {
490 SENSOR_ATTR(in0_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 0),
491 SENSOR_ATTR(in1_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 13),
492 SENSOR_ATTR(in2_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 2),
493 SENSOR_ATTR(in3_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 3),
494 SENSOR_ATTR(in4_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 8),
495 SENSOR_ATTR(in5_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 9),
496 SENSOR_ATTR(in6_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 10),
497 SENSOR_ATTR(in7_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 16),
498 SENSOR_ATTR(in8_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 17),
499 SENSOR_ATTR(in9_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 14),
500 };
501
502 static struct sensor_device_attribute sda_in_alarm[] = {
503 SENSOR_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0),
504 SENSOR_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1),
505 SENSOR_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2),
506 SENSOR_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3),
507 SENSOR_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8),
508 SENSOR_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 9),
509 SENSOR_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 10),
510 SENSOR_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 19),
511 SENSOR_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 20),
512 SENSOR_ATTR(in9_alarm, S_IRUGO, show_alarm, NULL, 14),
513 };
514
515 #define show_fan_reg(reg) \
516 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
517 char *buf) \
518 { \
519 struct sensor_device_attribute *sensor_attr = \
520 to_sensor_dev_attr(attr); \
521 struct w83791d_data *data = w83791d_update_device(dev); \
522 int nr = sensor_attr->index; \
523 return sprintf(buf, "%d\n", \
524 FAN_FROM_REG(data->reg[nr], DIV_FROM_REG(data->fan_div[nr]))); \
525 }
526
527 show_fan_reg(fan);
528 show_fan_reg(fan_min);
529
530 static ssize_t store_fan_min(struct device *dev, struct device_attribute *attr,
531 const char *buf, size_t count)
532 {
533 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
534 struct i2c_client *client = to_i2c_client(dev);
535 struct w83791d_data *data = i2c_get_clientdata(client);
536 int nr = sensor_attr->index;
537 unsigned long val;
538 int err;
539
540 err = kstrtoul(buf, 10, &val);
541 if (err)
542 return err;
543
544 mutex_lock(&data->update_lock);
545 data->fan_min[nr] = fan_to_reg(val, DIV_FROM_REG(data->fan_div[nr]));
546 w83791d_write(client, W83791D_REG_FAN_MIN[nr], data->fan_min[nr]);
547 mutex_unlock(&data->update_lock);
548
549 return count;
550 }
551
552 static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
553 char *buf)
554 {
555 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
556 int nr = sensor_attr->index;
557 struct w83791d_data *data = w83791d_update_device(dev);
558 return sprintf(buf, "%u\n", DIV_FROM_REG(data->fan_div[nr]));
559 }
560
561 /*
562 * Note: we save and restore the fan minimum here, because its value is
563 * determined in part by the fan divisor. This follows the principle of
564 * least surprise; the user doesn't expect the fan minimum to change just
565 * because the divisor changed.
566 */
567 static ssize_t store_fan_div(struct device *dev, struct device_attribute *attr,
568 const char *buf, size_t count)
569 {
570 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
571 struct i2c_client *client = to_i2c_client(dev);
572 struct w83791d_data *data = i2c_get_clientdata(client);
573 int nr = sensor_attr->index;
574 unsigned long min;
575 u8 tmp_fan_div;
576 u8 fan_div_reg;
577 u8 vbat_reg;
578 int indx = 0;
579 u8 keep_mask = 0;
580 u8 new_shift = 0;
581 unsigned long val;
582 int err;
583
584 err = kstrtoul(buf, 10, &val);
585 if (err)
586 return err;
587
588 /* Save fan_min */
589 min = FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr]));
590
591 mutex_lock(&data->update_lock);
592 data->fan_div[nr] = div_to_reg(nr, val);
593
594 switch (nr) {
595 case 0:
596 indx = 0;
597 keep_mask = 0xcf;
598 new_shift = 4;
599 break;
600 case 1:
601 indx = 0;
602 keep_mask = 0x3f;
603 new_shift = 6;
604 break;
605 case 2:
606 indx = 1;
607 keep_mask = 0x3f;
608 new_shift = 6;
609 break;
610 case 3:
611 indx = 2;
612 keep_mask = 0xf8;
613 new_shift = 0;
614 break;
615 case 4:
616 indx = 2;
617 keep_mask = 0x8f;
618 new_shift = 4;
619 break;
620 #ifdef DEBUG
621 default:
622 dev_warn(dev, "store_fan_div: Unexpected nr seen: %d\n", nr);
623 count = -EINVAL;
624 goto err_exit;
625 #endif
626 }
627
628 fan_div_reg = w83791d_read(client, W83791D_REG_FAN_DIV[indx])
629 & keep_mask;
630 tmp_fan_div = (data->fan_div[nr] << new_shift) & ~keep_mask;
631
632 w83791d_write(client, W83791D_REG_FAN_DIV[indx],
633 fan_div_reg | tmp_fan_div);
634
635 /* Bit 2 of fans 0-2 is stored in the vbat register (bits 5-7) */
636 if (nr < 3) {
637 keep_mask = ~(1 << (nr + 5));
638 vbat_reg = w83791d_read(client, W83791D_REG_VBAT)
639 & keep_mask;
640 tmp_fan_div = (data->fan_div[nr] << (3 + nr)) & ~keep_mask;
641 w83791d_write(client, W83791D_REG_VBAT,
642 vbat_reg | tmp_fan_div);
643 }
644
645 /* Restore fan_min */
646 data->fan_min[nr] = fan_to_reg(min, DIV_FROM_REG(data->fan_div[nr]));
647 w83791d_write(client, W83791D_REG_FAN_MIN[nr], data->fan_min[nr]);
648
649 #ifdef DEBUG
650 err_exit:
651 #endif
652 mutex_unlock(&data->update_lock);
653
654 return count;
655 }
656
657 static struct sensor_device_attribute sda_fan_input[] = {
658 SENSOR_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0),
659 SENSOR_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1),
660 SENSOR_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2),
661 SENSOR_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3),
662 SENSOR_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 4),
663 };
664
665 static struct sensor_device_attribute sda_fan_min[] = {
666 SENSOR_ATTR(fan1_min, S_IWUSR | S_IRUGO,
667 show_fan_min, store_fan_min, 0),
668 SENSOR_ATTR(fan2_min, S_IWUSR | S_IRUGO,
669 show_fan_min, store_fan_min, 1),
670 SENSOR_ATTR(fan3_min, S_IWUSR | S_IRUGO,
671 show_fan_min, store_fan_min, 2),
672 SENSOR_ATTR(fan4_min, S_IWUSR | S_IRUGO,
673 show_fan_min, store_fan_min, 3),
674 SENSOR_ATTR(fan5_min, S_IWUSR | S_IRUGO,
675 show_fan_min, store_fan_min, 4),
676 };
677
678 static struct sensor_device_attribute sda_fan_div[] = {
679 SENSOR_ATTR(fan1_div, S_IWUSR | S_IRUGO,
680 show_fan_div, store_fan_div, 0),
681 SENSOR_ATTR(fan2_div, S_IWUSR | S_IRUGO,
682 show_fan_div, store_fan_div, 1),
683 SENSOR_ATTR(fan3_div, S_IWUSR | S_IRUGO,
684 show_fan_div, store_fan_div, 2),
685 SENSOR_ATTR(fan4_div, S_IWUSR | S_IRUGO,
686 show_fan_div, store_fan_div, 3),
687 SENSOR_ATTR(fan5_div, S_IWUSR | S_IRUGO,
688 show_fan_div, store_fan_div, 4),
689 };
690
691 static struct sensor_device_attribute sda_fan_beep[] = {
692 SENSOR_ATTR(fan1_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 6),
693 SENSOR_ATTR(fan2_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 7),
694 SENSOR_ATTR(fan3_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 11),
695 SENSOR_ATTR(fan4_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 21),
696 SENSOR_ATTR(fan5_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 22),
697 };
698
699 static struct sensor_device_attribute sda_fan_alarm[] = {
700 SENSOR_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6),
701 SENSOR_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7),
702 SENSOR_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 11),
703 SENSOR_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 21),
704 SENSOR_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 22),
705 };
706
707 /* read/write PWMs */
708 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
709 char *buf)
710 {
711 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
712 int nr = sensor_attr->index;
713 struct w83791d_data *data = w83791d_update_device(dev);
714 return sprintf(buf, "%u\n", data->pwm[nr]);
715 }
716
717 static ssize_t store_pwm(struct device *dev, struct device_attribute *attr,
718 const char *buf, size_t count)
719 {
720 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
721 struct i2c_client *client = to_i2c_client(dev);
722 struct w83791d_data *data = i2c_get_clientdata(client);
723 int nr = sensor_attr->index;
724 unsigned long val;
725
726 if (kstrtoul(buf, 10, &val))
727 return -EINVAL;
728
729 mutex_lock(&data->update_lock);
730 data->pwm[nr] = clamp_val(val, 0, 255);
731 w83791d_write(client, W83791D_REG_PWM[nr], data->pwm[nr]);
732 mutex_unlock(&data->update_lock);
733 return count;
734 }
735
736 static struct sensor_device_attribute sda_pwm[] = {
737 SENSOR_ATTR(pwm1, S_IWUSR | S_IRUGO,
738 show_pwm, store_pwm, 0),
739 SENSOR_ATTR(pwm2, S_IWUSR | S_IRUGO,
740 show_pwm, store_pwm, 1),
741 SENSOR_ATTR(pwm3, S_IWUSR | S_IRUGO,
742 show_pwm, store_pwm, 2),
743 SENSOR_ATTR(pwm4, S_IWUSR | S_IRUGO,
744 show_pwm, store_pwm, 3),
745 SENSOR_ATTR(pwm5, S_IWUSR | S_IRUGO,
746 show_pwm, store_pwm, 4),
747 };
748
749 static ssize_t show_pwmenable(struct device *dev, struct device_attribute *attr,
750 char *buf)
751 {
752 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
753 int nr = sensor_attr->index;
754 struct w83791d_data *data = w83791d_update_device(dev);
755 return sprintf(buf, "%u\n", data->pwm_enable[nr] + 1);
756 }
757
758 static ssize_t store_pwmenable(struct device *dev,
759 struct device_attribute *attr, const char *buf, size_t count)
760 {
761 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
762 struct i2c_client *client = to_i2c_client(dev);
763 struct w83791d_data *data = i2c_get_clientdata(client);
764 int nr = sensor_attr->index;
765 unsigned long val;
766 u8 reg_cfg_tmp;
767 u8 reg_idx = 0;
768 u8 val_shift = 0;
769 u8 keep_mask = 0;
770
771 int ret = kstrtoul(buf, 10, &val);
772
773 if (ret || val < 1 || val > 3)
774 return -EINVAL;
775
776 mutex_lock(&data->update_lock);
777 data->pwm_enable[nr] = val - 1;
778 switch (nr) {
779 case 0:
780 reg_idx = 0;
781 val_shift = 2;
782 keep_mask = 0xf3;
783 break;
784 case 1:
785 reg_idx = 0;
786 val_shift = 4;
787 keep_mask = 0xcf;
788 break;
789 case 2:
790 reg_idx = 1;
791 val_shift = 2;
792 keep_mask = 0xf3;
793 break;
794 }
795
796 reg_cfg_tmp = w83791d_read(client, W83791D_REG_FAN_CFG[reg_idx]);
797 reg_cfg_tmp = (reg_cfg_tmp & keep_mask) |
798 data->pwm_enable[nr] << val_shift;
799
800 w83791d_write(client, W83791D_REG_FAN_CFG[reg_idx], reg_cfg_tmp);
801 mutex_unlock(&data->update_lock);
802
803 return count;
804 }
805 static struct sensor_device_attribute sda_pwmenable[] = {
806 SENSOR_ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
807 show_pwmenable, store_pwmenable, 0),
808 SENSOR_ATTR(pwm2_enable, S_IWUSR | S_IRUGO,
809 show_pwmenable, store_pwmenable, 1),
810 SENSOR_ATTR(pwm3_enable, S_IWUSR | S_IRUGO,
811 show_pwmenable, store_pwmenable, 2),
812 };
813
814 /* For Smart Fan I / Thermal Cruise */
815 static ssize_t show_temp_target(struct device *dev,
816 struct device_attribute *attr, char *buf)
817 {
818 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
819 struct w83791d_data *data = w83791d_update_device(dev);
820 int nr = sensor_attr->index;
821 return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp_target[nr]));
822 }
823
824 static ssize_t store_temp_target(struct device *dev,
825 struct device_attribute *attr, const char *buf, size_t count)
826 {
827 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
828 struct i2c_client *client = to_i2c_client(dev);
829 struct w83791d_data *data = i2c_get_clientdata(client);
830 int nr = sensor_attr->index;
831 long val;
832 u8 target_mask;
833
834 if (kstrtol(buf, 10, &val))
835 return -EINVAL;
836
837 mutex_lock(&data->update_lock);
838 data->temp_target[nr] = TARGET_TEMP_TO_REG(val);
839 target_mask = w83791d_read(client,
840 W83791D_REG_TEMP_TARGET[nr]) & 0x80;
841 w83791d_write(client, W83791D_REG_TEMP_TARGET[nr],
842 data->temp_target[nr] | target_mask);
843 mutex_unlock(&data->update_lock);
844 return count;
845 }
846
847 static struct sensor_device_attribute sda_temp_target[] = {
848 SENSOR_ATTR(temp1_target, S_IWUSR | S_IRUGO,
849 show_temp_target, store_temp_target, 0),
850 SENSOR_ATTR(temp2_target, S_IWUSR | S_IRUGO,
851 show_temp_target, store_temp_target, 1),
852 SENSOR_ATTR(temp3_target, S_IWUSR | S_IRUGO,
853 show_temp_target, store_temp_target, 2),
854 };
855
856 static ssize_t show_temp_tolerance(struct device *dev,
857 struct device_attribute *attr, char *buf)
858 {
859 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
860 struct w83791d_data *data = w83791d_update_device(dev);
861 int nr = sensor_attr->index;
862 return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp_tolerance[nr]));
863 }
864
865 static ssize_t store_temp_tolerance(struct device *dev,
866 struct device_attribute *attr, const char *buf, size_t count)
867 {
868 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
869 struct i2c_client *client = to_i2c_client(dev);
870 struct w83791d_data *data = i2c_get_clientdata(client);
871 int nr = sensor_attr->index;
872 unsigned long val;
873 u8 target_mask;
874 u8 reg_idx = 0;
875 u8 val_shift = 0;
876 u8 keep_mask = 0;
877
878 if (kstrtoul(buf, 10, &val))
879 return -EINVAL;
880
881 switch (nr) {
882 case 0:
883 reg_idx = 0;
884 val_shift = 0;
885 keep_mask = 0xf0;
886 break;
887 case 1:
888 reg_idx = 0;
889 val_shift = 4;
890 keep_mask = 0x0f;
891 break;
892 case 2:
893 reg_idx = 1;
894 val_shift = 0;
895 keep_mask = 0xf0;
896 break;
897 }
898
899 mutex_lock(&data->update_lock);
900 data->temp_tolerance[nr] = TOL_TEMP_TO_REG(val);
901 target_mask = w83791d_read(client,
902 W83791D_REG_TEMP_TOL[reg_idx]) & keep_mask;
903 w83791d_write(client, W83791D_REG_TEMP_TOL[reg_idx],
904 (data->temp_tolerance[nr] << val_shift) | target_mask);
905 mutex_unlock(&data->update_lock);
906 return count;
907 }
908
909 static struct sensor_device_attribute sda_temp_tolerance[] = {
910 SENSOR_ATTR(temp1_tolerance, S_IWUSR | S_IRUGO,
911 show_temp_tolerance, store_temp_tolerance, 0),
912 SENSOR_ATTR(temp2_tolerance, S_IWUSR | S_IRUGO,
913 show_temp_tolerance, store_temp_tolerance, 1),
914 SENSOR_ATTR(temp3_tolerance, S_IWUSR | S_IRUGO,
915 show_temp_tolerance, store_temp_tolerance, 2),
916 };
917
918 /* read/write the temperature1, includes measured value and limits */
919 static ssize_t show_temp1(struct device *dev, struct device_attribute *devattr,
920 char *buf)
921 {
922 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
923 struct w83791d_data *data = w83791d_update_device(dev);
924 return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp1[attr->index]));
925 }
926
927 static ssize_t store_temp1(struct device *dev, struct device_attribute *devattr,
928 const char *buf, size_t count)
929 {
930 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
931 struct i2c_client *client = to_i2c_client(dev);
932 struct w83791d_data *data = i2c_get_clientdata(client);
933 int nr = attr->index;
934 long val;
935 int err;
936
937 err = kstrtol(buf, 10, &val);
938 if (err)
939 return err;
940
941 mutex_lock(&data->update_lock);
942 data->temp1[nr] = TEMP1_TO_REG(val);
943 w83791d_write(client, W83791D_REG_TEMP1[nr], data->temp1[nr]);
944 mutex_unlock(&data->update_lock);
945 return count;
946 }
947
948 /* read/write temperature2-3, includes measured value and limits */
949 static ssize_t show_temp23(struct device *dev, struct device_attribute *devattr,
950 char *buf)
951 {
952 struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
953 struct w83791d_data *data = w83791d_update_device(dev);
954 int nr = attr->nr;
955 int index = attr->index;
956 return sprintf(buf, "%d\n", TEMP23_FROM_REG(data->temp_add[nr][index]));
957 }
958
959 static ssize_t store_temp23(struct device *dev,
960 struct device_attribute *devattr,
961 const char *buf, size_t count)
962 {
963 struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
964 struct i2c_client *client = to_i2c_client(dev);
965 struct w83791d_data *data = i2c_get_clientdata(client);
966 long val;
967 int err;
968 int nr = attr->nr;
969 int index = attr->index;
970
971 err = kstrtol(buf, 10, &val);
972 if (err)
973 return err;
974
975 mutex_lock(&data->update_lock);
976 data->temp_add[nr][index] = TEMP23_TO_REG(val);
977 w83791d_write(client, W83791D_REG_TEMP_ADD[nr][index * 2],
978 data->temp_add[nr][index] >> 8);
979 w83791d_write(client, W83791D_REG_TEMP_ADD[nr][index * 2 + 1],
980 data->temp_add[nr][index] & 0x80);
981 mutex_unlock(&data->update_lock);
982
983 return count;
984 }
985
986 static struct sensor_device_attribute_2 sda_temp_input[] = {
987 SENSOR_ATTR_2(temp1_input, S_IRUGO, show_temp1, NULL, 0, 0),
988 SENSOR_ATTR_2(temp2_input, S_IRUGO, show_temp23, NULL, 0, 0),
989 SENSOR_ATTR_2(temp3_input, S_IRUGO, show_temp23, NULL, 1, 0),
990 };
991
992 static struct sensor_device_attribute_2 sda_temp_max[] = {
993 SENSOR_ATTR_2(temp1_max, S_IRUGO | S_IWUSR,
994 show_temp1, store_temp1, 0, 1),
995 SENSOR_ATTR_2(temp2_max, S_IRUGO | S_IWUSR,
996 show_temp23, store_temp23, 0, 1),
997 SENSOR_ATTR_2(temp3_max, S_IRUGO | S_IWUSR,
998 show_temp23, store_temp23, 1, 1),
999 };
1000
1001 static struct sensor_device_attribute_2 sda_temp_max_hyst[] = {
1002 SENSOR_ATTR_2(temp1_max_hyst, S_IRUGO | S_IWUSR,
1003 show_temp1, store_temp1, 0, 2),
1004 SENSOR_ATTR_2(temp2_max_hyst, S_IRUGO | S_IWUSR,
1005 show_temp23, store_temp23, 0, 2),
1006 SENSOR_ATTR_2(temp3_max_hyst, S_IRUGO | S_IWUSR,
1007 show_temp23, store_temp23, 1, 2),
1008 };
1009
1010 /*
1011 * Note: The bitmask for the beep enable/disable is different than
1012 * the bitmask for the alarm.
1013 */
1014 static struct sensor_device_attribute sda_temp_beep[] = {
1015 SENSOR_ATTR(temp1_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 4),
1016 SENSOR_ATTR(temp2_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 5),
1017 SENSOR_ATTR(temp3_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 1),
1018 };
1019
1020 static struct sensor_device_attribute sda_temp_alarm[] = {
1021 SENSOR_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4),
1022 SENSOR_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5),
1023 SENSOR_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 13),
1024 };
1025
1026 /* get realtime status of all sensors items: voltage, temp, fan */
1027 static ssize_t alarms_show(struct device *dev, struct device_attribute *attr,
1028 char *buf)
1029 {
1030 struct w83791d_data *data = w83791d_update_device(dev);
1031 return sprintf(buf, "%u\n", data->alarms);
1032 }
1033
1034 static DEVICE_ATTR_RO(alarms);
1035
1036 /* Beep control */
1037
1038 #define GLOBAL_BEEP_ENABLE_SHIFT 15
1039 #define GLOBAL_BEEP_ENABLE_MASK (1 << GLOBAL_BEEP_ENABLE_SHIFT)
1040
1041 static ssize_t show_beep_enable(struct device *dev,
1042 struct device_attribute *attr, char *buf)
1043 {
1044 struct w83791d_data *data = w83791d_update_device(dev);
1045 return sprintf(buf, "%d\n", data->beep_enable);
1046 }
1047
1048 static ssize_t show_beep_mask(struct device *dev,
1049 struct device_attribute *attr, char *buf)
1050 {
1051 struct w83791d_data *data = w83791d_update_device(dev);
1052 return sprintf(buf, "%d\n", BEEP_MASK_FROM_REG(data->beep_mask));
1053 }
1054
1055
1056 static ssize_t store_beep_mask(struct device *dev,
1057 struct device_attribute *attr,
1058 const char *buf, size_t count)
1059 {
1060 struct i2c_client *client = to_i2c_client(dev);
1061 struct w83791d_data *data = i2c_get_clientdata(client);
1062 int i;
1063 long val;
1064 int err;
1065
1066 err = kstrtol(buf, 10, &val);
1067 if (err)
1068 return err;
1069
1070 mutex_lock(&data->update_lock);
1071
1072 /*
1073 * The beep_enable state overrides any enabling request from
1074 * the masks
1075 */
1076 data->beep_mask = BEEP_MASK_TO_REG(val) & ~GLOBAL_BEEP_ENABLE_MASK;
1077 data->beep_mask |= (data->beep_enable << GLOBAL_BEEP_ENABLE_SHIFT);
1078
1079 val = data->beep_mask;
1080
1081 for (i = 0; i < 3; i++) {
1082 w83791d_write(client, W83791D_REG_BEEP_CTRL[i], (val & 0xff));
1083 val >>= 8;
1084 }
1085
1086 mutex_unlock(&data->update_lock);
1087
1088 return count;
1089 }
1090
1091 static ssize_t store_beep_enable(struct device *dev,
1092 struct device_attribute *attr,
1093 const char *buf, size_t count)
1094 {
1095 struct i2c_client *client = to_i2c_client(dev);
1096 struct w83791d_data *data = i2c_get_clientdata(client);
1097 long val;
1098 int err;
1099
1100 err = kstrtol(buf, 10, &val);
1101 if (err)
1102 return err;
1103
1104 mutex_lock(&data->update_lock);
1105
1106 data->beep_enable = val ? 1 : 0;
1107
1108 /* Keep the full mask value in sync with the current enable */
1109 data->beep_mask &= ~GLOBAL_BEEP_ENABLE_MASK;
1110 data->beep_mask |= (data->beep_enable << GLOBAL_BEEP_ENABLE_SHIFT);
1111
1112 /*
1113 * The global control is in the second beep control register
1114 * so only need to update that register
1115 */
1116 val = (data->beep_mask >> 8) & 0xff;
1117
1118 w83791d_write(client, W83791D_REG_BEEP_CTRL[1], val);
1119
1120 mutex_unlock(&data->update_lock);
1121
1122 return count;
1123 }
1124
1125 static struct sensor_device_attribute sda_beep_ctrl[] = {
1126 SENSOR_ATTR(beep_enable, S_IRUGO | S_IWUSR,
1127 show_beep_enable, store_beep_enable, 0),
1128 SENSOR_ATTR(beep_mask, S_IRUGO | S_IWUSR,
1129 show_beep_mask, store_beep_mask, 1)
1130 };
1131
1132 /* cpu voltage regulation information */
1133 static ssize_t cpu0_vid_show(struct device *dev,
1134 struct device_attribute *attr, char *buf)
1135 {
1136 struct w83791d_data *data = w83791d_update_device(dev);
1137 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
1138 }
1139
1140 static DEVICE_ATTR_RO(cpu0_vid);
1141
1142 static ssize_t vrm_show(struct device *dev, struct device_attribute *attr,
1143 char *buf)
1144 {
1145 struct w83791d_data *data = dev_get_drvdata(dev);
1146 return sprintf(buf, "%d\n", data->vrm);
1147 }
1148
1149 static ssize_t vrm_store(struct device *dev, struct device_attribute *attr,
1150 const char *buf, size_t count)
1151 {
1152 struct w83791d_data *data = dev_get_drvdata(dev);
1153 unsigned long val;
1154 int err;
1155
1156 /*
1157 * No lock needed as vrm is internal to the driver
1158 * (not read from a chip register) and so is not
1159 * updated in w83791d_update_device()
1160 */
1161
1162 err = kstrtoul(buf, 10, &val);
1163 if (err)
1164 return err;
1165
1166 if (val > 255)
1167 return -EINVAL;
1168
1169 data->vrm = val;
1170 return count;
1171 }
1172
1173 static DEVICE_ATTR_RW(vrm);
1174
1175 #define IN_UNIT_ATTRS(X) \
1176 &sda_in_input[X].dev_attr.attr, \
1177 &sda_in_min[X].dev_attr.attr, \
1178 &sda_in_max[X].dev_attr.attr, \
1179 &sda_in_beep[X].dev_attr.attr, \
1180 &sda_in_alarm[X].dev_attr.attr
1181
1182 #define FAN_UNIT_ATTRS(X) \
1183 &sda_fan_input[X].dev_attr.attr, \
1184 &sda_fan_min[X].dev_attr.attr, \
1185 &sda_fan_div[X].dev_attr.attr, \
1186 &sda_fan_beep[X].dev_attr.attr, \
1187 &sda_fan_alarm[X].dev_attr.attr
1188
1189 #define TEMP_UNIT_ATTRS(X) \
1190 &sda_temp_input[X].dev_attr.attr, \
1191 &sda_temp_max[X].dev_attr.attr, \
1192 &sda_temp_max_hyst[X].dev_attr.attr, \
1193 &sda_temp_beep[X].dev_attr.attr, \
1194 &sda_temp_alarm[X].dev_attr.attr
1195
1196 static struct attribute *w83791d_attributes[] = {
1197 IN_UNIT_ATTRS(0),
1198 IN_UNIT_ATTRS(1),
1199 IN_UNIT_ATTRS(2),
1200 IN_UNIT_ATTRS(3),
1201 IN_UNIT_ATTRS(4),
1202 IN_UNIT_ATTRS(5),
1203 IN_UNIT_ATTRS(6),
1204 IN_UNIT_ATTRS(7),
1205 IN_UNIT_ATTRS(8),
1206 IN_UNIT_ATTRS(9),
1207 FAN_UNIT_ATTRS(0),
1208 FAN_UNIT_ATTRS(1),
1209 FAN_UNIT_ATTRS(2),
1210 TEMP_UNIT_ATTRS(0),
1211 TEMP_UNIT_ATTRS(1),
1212 TEMP_UNIT_ATTRS(2),
1213 &dev_attr_alarms.attr,
1214 &sda_beep_ctrl[0].dev_attr.attr,
1215 &sda_beep_ctrl[1].dev_attr.attr,
1216 &dev_attr_cpu0_vid.attr,
1217 &dev_attr_vrm.attr,
1218 &sda_pwm[0].dev_attr.attr,
1219 &sda_pwm[1].dev_attr.attr,
1220 &sda_pwm[2].dev_attr.attr,
1221 &sda_pwmenable[0].dev_attr.attr,
1222 &sda_pwmenable[1].dev_attr.attr,
1223 &sda_pwmenable[2].dev_attr.attr,
1224 &sda_temp_target[0].dev_attr.attr,
1225 &sda_temp_target[1].dev_attr.attr,
1226 &sda_temp_target[2].dev_attr.attr,
1227 &sda_temp_tolerance[0].dev_attr.attr,
1228 &sda_temp_tolerance[1].dev_attr.attr,
1229 &sda_temp_tolerance[2].dev_attr.attr,
1230 NULL
1231 };
1232
1233 static const struct attribute_group w83791d_group = {
1234 .attrs = w83791d_attributes,
1235 };
1236
1237 /*
1238 * Separate group of attributes for fan/pwm 4-5. Their pins can also be
1239 * in use for GPIO in which case their sysfs-interface should not be made
1240 * available
1241 */
1242 static struct attribute *w83791d_attributes_fanpwm45[] = {
1243 FAN_UNIT_ATTRS(3),
1244 FAN_UNIT_ATTRS(4),
1245 &sda_pwm[3].dev_attr.attr,
1246 &sda_pwm[4].dev_attr.attr,
1247 NULL
1248 };
1249
1250 static const struct attribute_group w83791d_group_fanpwm45 = {
1251 .attrs = w83791d_attributes_fanpwm45,
1252 };
1253
1254 static int w83791d_detect_subclients(struct i2c_client *client)
1255 {
1256 struct i2c_adapter *adapter = client->adapter;
1257 int address = client->addr;
1258 int i, id;
1259 u8 val;
1260
1261 id = i2c_adapter_id(adapter);
1262 if (force_subclients[0] == id && force_subclients[1] == address) {
1263 for (i = 2; i <= 3; i++) {
1264 if (force_subclients[i] < 0x48 ||
1265 force_subclients[i] > 0x4f) {
1266 dev_err(&client->dev,
1267 "invalid subclient "
1268 "address %d; must be 0x48-0x4f\n",
1269 force_subclients[i]);
1270 return -ENODEV;
1271 }
1272 }
1273 w83791d_write(client, W83791D_REG_I2C_SUBADDR,
1274 (force_subclients[2] & 0x07) |
1275 ((force_subclients[3] & 0x07) << 4));
1276 }
1277
1278 val = w83791d_read(client, W83791D_REG_I2C_SUBADDR);
1279
1280 if (!(val & 0x88) && (val & 0x7) == ((val >> 4) & 0x7)) {
1281 dev_err(&client->dev,
1282 "duplicate addresses 0x%x, use force_subclient\n", 0x48 + (val & 0x7));
1283 return -ENODEV;
1284 }
1285
1286 if (!(val & 0x08))
1287 devm_i2c_new_dummy_device(&client->dev, adapter, 0x48 + (val & 0x7));
1288
1289 if (!(val & 0x80))
1290 devm_i2c_new_dummy_device(&client->dev, adapter, 0x48 + ((val >> 4) & 0x7));
1291
1292 return 0;
1293 }
1294
1295
1296 /* Return 0 if detection is successful, -ENODEV otherwise */
1297 static int w83791d_detect(struct i2c_client *client,
1298 struct i2c_board_info *info)
1299 {
1300 struct i2c_adapter *adapter = client->adapter;
1301 int val1, val2;
1302 unsigned short address = client->addr;
1303
1304 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1305 return -ENODEV;
1306
1307 if (w83791d_read(client, W83791D_REG_CONFIG) & 0x80)
1308 return -ENODEV;
1309
1310 val1 = w83791d_read(client, W83791D_REG_BANK);
1311 val2 = w83791d_read(client, W83791D_REG_CHIPMAN);
1312 /* Check for Winbond ID if in bank 0 */
1313 if (!(val1 & 0x07)) {
1314 if ((!(val1 & 0x80) && val2 != 0xa3) ||
1315 ((val1 & 0x80) && val2 != 0x5c)) {
1316 return -ENODEV;
1317 }
1318 }
1319 /*
1320 * If Winbond chip, address of chip and W83791D_REG_I2C_ADDR
1321 * should match
1322 */
1323 if (w83791d_read(client, W83791D_REG_I2C_ADDR) != address)
1324 return -ENODEV;
1325
1326 /* We want bank 0 and Vendor ID high byte */
1327 val1 = w83791d_read(client, W83791D_REG_BANK) & 0x78;
1328 w83791d_write(client, W83791D_REG_BANK, val1 | 0x80);
1329
1330 /* Verify it is a Winbond w83791d */
1331 val1 = w83791d_read(client, W83791D_REG_WCHIPID);
1332 val2 = w83791d_read(client, W83791D_REG_CHIPMAN);
1333 if (val1 != 0x71 || val2 != 0x5c)
1334 return -ENODEV;
1335
1336 strscpy(info->type, "w83791d", I2C_NAME_SIZE);
1337
1338 return 0;
1339 }
1340
1341 static int w83791d_probe(struct i2c_client *client)
1342 {
1343 struct w83791d_data *data;
1344 struct device *dev = &client->dev;
1345 int i, err;
1346 u8 has_fanpwm45;
1347
1348 #ifdef DEBUG
1349 int val1;
1350 val1 = w83791d_read(client, W83791D_REG_DID_VID4);
1351 dev_dbg(dev, "Device ID version: %d.%d (0x%02x)\n",
1352 (val1 >> 5) & 0x07, (val1 >> 1) & 0x0f, val1);
1353 #endif
1354
1355 data = devm_kzalloc(&client->dev, sizeof(struct w83791d_data),
1356 GFP_KERNEL);
1357 if (!data)
1358 return -ENOMEM;
1359
1360 i2c_set_clientdata(client, data);
1361 mutex_init(&data->update_lock);
1362
1363 err = w83791d_detect_subclients(client);
1364 if (err)
1365 return err;
1366
1367 /* Initialize the chip */
1368 w83791d_init_client(client);
1369
1370 /*
1371 * If the fan_div is changed, make sure there is a rational
1372 * fan_min in place
1373 */
1374 for (i = 0; i < NUMBER_OF_FANIN; i++)
1375 data->fan_min[i] = w83791d_read(client, W83791D_REG_FAN_MIN[i]);
1376
1377 /* Register sysfs hooks */
1378 err = sysfs_create_group(&client->dev.kobj, &w83791d_group);
1379 if (err)
1380 return err;
1381
1382 /* Check if pins of fan/pwm 4-5 are in use as GPIO */
1383 has_fanpwm45 = w83791d_read(client, W83791D_REG_GPIO) & 0x10;
1384 if (has_fanpwm45) {
1385 err = sysfs_create_group(&client->dev.kobj,
1386 &w83791d_group_fanpwm45);
1387 if (err)
1388 goto error4;
1389 }
1390
1391 /* Everything is ready, now register the working device */
1392 data->hwmon_dev = hwmon_device_register(dev);
1393 if (IS_ERR(data->hwmon_dev)) {
1394 err = PTR_ERR(data->hwmon_dev);
1395 goto error5;
1396 }
1397
1398 return 0;
1399
1400 error5:
1401 if (has_fanpwm45)
1402 sysfs_remove_group(&client->dev.kobj, &w83791d_group_fanpwm45);
1403 error4:
1404 sysfs_remove_group(&client->dev.kobj, &w83791d_group);
1405 return err;
1406 }
1407
1408 static void w83791d_remove(struct i2c_client *client)
1409 {
1410 struct w83791d_data *data = i2c_get_clientdata(client);
1411
1412 hwmon_device_unregister(data->hwmon_dev);
1413 sysfs_remove_group(&client->dev.kobj, &w83791d_group);
1414 }
1415
1416 static void w83791d_init_client(struct i2c_client *client)
1417 {
1418 struct w83791d_data *data = i2c_get_clientdata(client);
1419 u8 tmp;
1420 u8 old_beep;
1421
1422 /*
1423 * The difference between reset and init is that reset
1424 * does a hard reset of the chip via index 0x40, bit 7,
1425 * but init simply forces certain registers to have "sane"
1426 * values. The hope is that the BIOS has done the right
1427 * thing (which is why the default is reset=0, init=0),
1428 * but if not, reset is the hard hammer and init
1429 * is the soft mallet both of which are trying to whack
1430 * things into place...
1431 * NOTE: The data sheet makes a distinction between
1432 * "power on defaults" and "reset by MR". As far as I can tell,
1433 * the hard reset puts everything into a power-on state so I'm
1434 * not sure what "reset by MR" means or how it can happen.
1435 */
1436 if (reset || init) {
1437 /* keep some BIOS settings when we... */
1438 old_beep = w83791d_read(client, W83791D_REG_BEEP_CONFIG);
1439
1440 if (reset) {
1441 /* ... reset the chip and ... */
1442 w83791d_write(client, W83791D_REG_CONFIG, 0x80);
1443 }
1444
1445 /* ... disable power-on abnormal beep */
1446 w83791d_write(client, W83791D_REG_BEEP_CONFIG, old_beep | 0x80);
1447
1448 /* disable the global beep (not done by hard reset) */
1449 tmp = w83791d_read(client, W83791D_REG_BEEP_CTRL[1]);
1450 w83791d_write(client, W83791D_REG_BEEP_CTRL[1], tmp & 0xef);
1451
1452 if (init) {
1453 /* Make sure monitoring is turned on for add-ons */
1454 tmp = w83791d_read(client, W83791D_REG_TEMP2_CONFIG);
1455 if (tmp & 1) {
1456 w83791d_write(client, W83791D_REG_TEMP2_CONFIG,
1457 tmp & 0xfe);
1458 }
1459
1460 tmp = w83791d_read(client, W83791D_REG_TEMP3_CONFIG);
1461 if (tmp & 1) {
1462 w83791d_write(client, W83791D_REG_TEMP3_CONFIG,
1463 tmp & 0xfe);
1464 }
1465
1466 /* Start monitoring */
1467 tmp = w83791d_read(client, W83791D_REG_CONFIG) & 0xf7;
1468 w83791d_write(client, W83791D_REG_CONFIG, tmp | 0x01);
1469 }
1470 }
1471
1472 data->vrm = vid_which_vrm();
1473 }
1474
1475 static struct w83791d_data *w83791d_update_device(struct device *dev)
1476 {
1477 struct i2c_client *client = to_i2c_client(dev);
1478 struct w83791d_data *data = i2c_get_clientdata(client);
1479 int i, j;
1480 u8 reg_array_tmp[3];
1481 u8 vbat_reg;
1482
1483 mutex_lock(&data->update_lock);
1484
1485 if (time_after(jiffies, data->last_updated + (HZ * 3))
1486 || !data->valid) {
1487 dev_dbg(dev, "Starting w83791d device update\n");
1488
1489 /* Update the voltages measured value and limits */
1490 for (i = 0; i < NUMBER_OF_VIN; i++) {
1491 data->in[i] = w83791d_read(client,
1492 W83791D_REG_IN[i]);
1493 data->in_max[i] = w83791d_read(client,
1494 W83791D_REG_IN_MAX[i]);
1495 data->in_min[i] = w83791d_read(client,
1496 W83791D_REG_IN_MIN[i]);
1497 }
1498
1499 /* Update the fan counts and limits */
1500 for (i = 0; i < NUMBER_OF_FANIN; i++) {
1501 /* Update the Fan measured value and limits */
1502 data->fan[i] = w83791d_read(client,
1503 W83791D_REG_FAN[i]);
1504 data->fan_min[i] = w83791d_read(client,
1505 W83791D_REG_FAN_MIN[i]);
1506 }
1507
1508 /* Update the fan divisor */
1509 for (i = 0; i < 3; i++) {
1510 reg_array_tmp[i] = w83791d_read(client,
1511 W83791D_REG_FAN_DIV[i]);
1512 }
1513 data->fan_div[0] = (reg_array_tmp[0] >> 4) & 0x03;
1514 data->fan_div[1] = (reg_array_tmp[0] >> 6) & 0x03;
1515 data->fan_div[2] = (reg_array_tmp[1] >> 6) & 0x03;
1516 data->fan_div[3] = reg_array_tmp[2] & 0x07;
1517 data->fan_div[4] = (reg_array_tmp[2] >> 4) & 0x07;
1518
1519 /*
1520 * The fan divisor for fans 0-2 get bit 2 from
1521 * bits 5-7 respectively of vbat register
1522 */
1523 vbat_reg = w83791d_read(client, W83791D_REG_VBAT);
1524 for (i = 0; i < 3; i++)
1525 data->fan_div[i] |= (vbat_reg >> (3 + i)) & 0x04;
1526
1527 /* Update PWM duty cycle */
1528 for (i = 0; i < NUMBER_OF_PWM; i++) {
1529 data->pwm[i] = w83791d_read(client,
1530 W83791D_REG_PWM[i]);
1531 }
1532
1533 /* Update PWM enable status */
1534 for (i = 0; i < 2; i++) {
1535 reg_array_tmp[i] = w83791d_read(client,
1536 W83791D_REG_FAN_CFG[i]);
1537 }
1538 data->pwm_enable[0] = (reg_array_tmp[0] >> 2) & 0x03;
1539 data->pwm_enable[1] = (reg_array_tmp[0] >> 4) & 0x03;
1540 data->pwm_enable[2] = (reg_array_tmp[1] >> 2) & 0x03;
1541
1542 /* Update PWM target temperature */
1543 for (i = 0; i < 3; i++) {
1544 data->temp_target[i] = w83791d_read(client,
1545 W83791D_REG_TEMP_TARGET[i]) & 0x7f;
1546 }
1547
1548 /* Update PWM temperature tolerance */
1549 for (i = 0; i < 2; i++) {
1550 reg_array_tmp[i] = w83791d_read(client,
1551 W83791D_REG_TEMP_TOL[i]);
1552 }
1553 data->temp_tolerance[0] = reg_array_tmp[0] & 0x0f;
1554 data->temp_tolerance[1] = (reg_array_tmp[0] >> 4) & 0x0f;
1555 data->temp_tolerance[2] = reg_array_tmp[1] & 0x0f;
1556
1557 /* Update the first temperature sensor */
1558 for (i = 0; i < 3; i++) {
1559 data->temp1[i] = w83791d_read(client,
1560 W83791D_REG_TEMP1[i]);
1561 }
1562
1563 /* Update the rest of the temperature sensors */
1564 for (i = 0; i < 2; i++) {
1565 for (j = 0; j < 3; j++) {
1566 data->temp_add[i][j] =
1567 (w83791d_read(client,
1568 W83791D_REG_TEMP_ADD[i][j * 2]) << 8) |
1569 w83791d_read(client,
1570 W83791D_REG_TEMP_ADD[i][j * 2 + 1]);
1571 }
1572 }
1573
1574 /* Update the realtime status */
1575 data->alarms =
1576 w83791d_read(client, W83791D_REG_ALARM1) +
1577 (w83791d_read(client, W83791D_REG_ALARM2) << 8) +
1578 (w83791d_read(client, W83791D_REG_ALARM3) << 16);
1579
1580 /* Update the beep configuration information */
1581 data->beep_mask =
1582 w83791d_read(client, W83791D_REG_BEEP_CTRL[0]) +
1583 (w83791d_read(client, W83791D_REG_BEEP_CTRL[1]) << 8) +
1584 (w83791d_read(client, W83791D_REG_BEEP_CTRL[2]) << 16);
1585
1586 /* Extract global beep enable flag */
1587 data->beep_enable =
1588 (data->beep_mask >> GLOBAL_BEEP_ENABLE_SHIFT) & 0x01;
1589
1590 /* Update the cpu voltage information */
1591 i = w83791d_read(client, W83791D_REG_VID_FANDIV);
1592 data->vid = i & 0x0f;
1593 data->vid |= (w83791d_read(client, W83791D_REG_DID_VID4) & 0x01)
1594 << 4;
1595
1596 data->last_updated = jiffies;
1597 data->valid = true;
1598 }
1599
1600 mutex_unlock(&data->update_lock);
1601
1602 #ifdef DEBUG
1603 w83791d_print_debug(data, dev);
1604 #endif
1605
1606 return data;
1607 }
1608
1609 #ifdef DEBUG
1610 static void w83791d_print_debug(struct w83791d_data *data, struct device *dev)
1611 {
1612 int i = 0, j = 0;
1613
1614 dev_dbg(dev, "======Start of w83791d debug values======\n");
1615 dev_dbg(dev, "%d set of Voltages: ===>\n", NUMBER_OF_VIN);
1616 for (i = 0; i < NUMBER_OF_VIN; i++) {
1617 dev_dbg(dev, "vin[%d] is: 0x%02x\n", i, data->in[i]);
1618 dev_dbg(dev, "vin[%d] min is: 0x%02x\n", i, data->in_min[i]);
1619 dev_dbg(dev, "vin[%d] max is: 0x%02x\n", i, data->in_max[i]);
1620 }
1621 dev_dbg(dev, "%d set of Fan Counts/Divisors: ===>\n", NUMBER_OF_FANIN);
1622 for (i = 0; i < NUMBER_OF_FANIN; i++) {
1623 dev_dbg(dev, "fan[%d] is: 0x%02x\n", i, data->fan[i]);
1624 dev_dbg(dev, "fan[%d] min is: 0x%02x\n", i, data->fan_min[i]);
1625 dev_dbg(dev, "fan_div[%d] is: 0x%02x\n", i, data->fan_div[i]);
1626 }
1627
1628 /*
1629 * temperature math is signed, but only print out the
1630 * bits that matter
1631 */
1632 dev_dbg(dev, "%d set of Temperatures: ===>\n", NUMBER_OF_TEMPIN);
1633 for (i = 0; i < 3; i++)
1634 dev_dbg(dev, "temp1[%d] is: 0x%02x\n", i, (u8) data->temp1[i]);
1635 for (i = 0; i < 2; i++) {
1636 for (j = 0; j < 3; j++) {
1637 dev_dbg(dev, "temp_add[%d][%d] is: 0x%04x\n", i, j,
1638 (u16) data->temp_add[i][j]);
1639 }
1640 }
1641
1642 dev_dbg(dev, "Misc Information: ===>\n");
1643 dev_dbg(dev, "alarm is: 0x%08x\n", data->alarms);
1644 dev_dbg(dev, "beep_mask is: 0x%08x\n", data->beep_mask);
1645 dev_dbg(dev, "beep_enable is: %d\n", data->beep_enable);
1646 dev_dbg(dev, "vid is: 0x%02x\n", data->vid);
1647 dev_dbg(dev, "vrm is: 0x%02x\n", data->vrm);
1648 dev_dbg(dev, "=======End of w83791d debug values========\n");
1649 dev_dbg(dev, "\n");
1650 }
1651 #endif
1652
1653 module_i2c_driver(w83791d_driver);
1654
1655 MODULE_AUTHOR("Charles Spirakis <bezaur@gmail.com>");
1656 MODULE_DESCRIPTION("W83791D driver");
1657 MODULE_LICENSE("GPL");
Kernel DRM miscellaneous fixes and cross-tree changes