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Merge tag 'sched_ext-for-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tj...
[linux-2.6-block.git] / drivers / hwmon / w83781d.c
CommitLineData
74ba9207 1// SPDX-License-Identifier: GPL-2.0-or-later
1da177e4 2/*
aff6e00e
GR		 3 * w83781d.c - Part of lm_sensors, Linux kernel modules for hardware
4 * monitoring
5 * Copyright (c) 1998 - 2001 Frodo Looijaard <frodol@dds.nl>,
6 * Philip Edelbrock <phil@netroedge.com>,
7 * and Mark Studebaker <mdsxyz123@yahoo.com>
7c81c60f 8 * Copyright (c) 2007 - 2008 Jean Delvare <jdelvare@suse.de>
aff6e00e 9 */
1da177e4
LT		 10
11/*
aff6e00e
GR		 12 * Supports following chips:
13 *
4101ece3 14 * Chip #vin #fanin #pwm #temp wchipid vendid i2c ISA
aff6e00e
GR		 15 * as99127f 7 3 0 3 0x31 0x12c3 yes no
16 * as99127f rev.2 (type_name = as99127f) 0x31 0x5ca3 yes no
17 * w83781d 7 3 0 3 0x10-1 0x5ca3 yes yes
18 * w83782d 9 3 2-4 3 0x30 0x5ca3 yes yes
19 * w83783s 5-6 3 2 1-2 0x40 0x5ca3 yes no
20 *
21 */
1da177e4 22
1ca28218
JP		 23#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
24
1da177e4
LT		 25#include <linux/module.h>
26#include <linux/init.h>
27#include <linux/slab.h>
28#include <linux/jiffies.h>
29#include <linux/i2c.h>
943b0830 30#include <linux/hwmon.h>
303760b4 31#include <linux/hwmon-vid.h>
34875337 32#include <linux/hwmon-sysfs.h>
311ce2ef 33#include <linux/sysfs.h>
943b0830 34#include <linux/err.h>
9a61bf63 35#include <linux/mutex.h>
443850ce
WG		 36
37#ifdef CONFIG_ISA
38#include <linux/platform_device.h>
39#include <linux/ioport.h>
6055fae8 40#include <linux/io.h>
443850ce 41#endif
1da177e4 42
443850ce 43#include "lm75.h"
7666c13c 44
1da177e4 45/* Addresses to scan */
25e9c86d
MH		 46static const unsigned short normal_i2c[] = { 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d,
47 0x2e, 0x2f, I2C_CLIENT_END };
3aed198c 48
e5e9f44c
JD		 49enum chips { w83781d, w83782d, w83783s, as99127f };
50
51/* Insmod parameters */
3aed198c
JD		 52static unsigned short force_subclients[4];
53module_param_array(force_subclients, short, NULL, 0);
b55f3757
GR		 54MODULE_PARM_DESC(force_subclients,
55 "List of subclient addresses: {bus, clientaddr, subclientaddr1, subclientaddr2}");
1da177e4 56
90ab5ee9 57static bool reset;
fabddcd4
JD		 58module_param(reset, bool, 0);
59MODULE_PARM_DESC(reset, "Set to one to reset chip on load");
60
90ab5ee9 61static bool init = 1;
1da177e4
LT		 62module_param(init, bool, 0);
63MODULE_PARM_DESC(init, "Set to zero to bypass chip initialization");
64
65/* Constants specified below */
66
67/* Length of ISA address segment */
68#define W83781D_EXTENT 8
69
70/* Where are the ISA address/data registers relative to the base address */
71#define W83781D_ADDR_REG_OFFSET 5
72#define W83781D_DATA_REG_OFFSET 6
73
34875337
JD		 74/* The device registers */
75/* in nr from 0 to 8 */
1da177e4
LT		 76#define W83781D_REG_IN_MAX(nr) ((nr < 7) ? (0x2b + (nr) * 2) : \
77 (0x554 + (((nr) - 7) * 2)))
78#define W83781D_REG_IN_MIN(nr) ((nr < 7) ? (0x2c + (nr) * 2) : \
79 (0x555 + (((nr) - 7) * 2)))
80#define W83781D_REG_IN(nr) ((nr < 7) ? (0x20 + (nr)) : \
81 (0x550 + (nr) - 7))
82
34875337
JD		 83/* fan nr from 0 to 2 */
84#define W83781D_REG_FAN_MIN(nr) (0x3b + (nr))
85#define W83781D_REG_FAN(nr) (0x28 + (nr))
1da177e4
LT		 86
87#define W83781D_REG_BANK 0x4E
88#define W83781D_REG_TEMP2_CONFIG 0x152
89#define W83781D_REG_TEMP3_CONFIG 0x252
34875337 90/* temp nr from 1 to 3 */
1da177e4
LT		 91#define W83781D_REG_TEMP(nr) ((nr == 3) ? (0x0250) : \
92 ((nr == 2) ? (0x0150) : \
93 (0x27)))
94#define W83781D_REG_TEMP_HYST(nr) ((nr == 3) ? (0x253) : \
95 ((nr == 2) ? (0x153) : \
96 (0x3A)))
97#define W83781D_REG_TEMP_OVER(nr) ((nr == 3) ? (0x255) : \
98 ((nr == 2) ? (0x155) : \
99 (0x39)))
100
101#define W83781D_REG_CONFIG 0x40
c7f5d7ed
JD		 102
103/* Interrupt status (W83781D, AS99127F) */
1da177e4
LT		 104#define W83781D_REG_ALARM1 0x41
105#define W83781D_REG_ALARM2 0x42
1da177e4 106
05663368 107/* Real-time status (W83782D, W83783S) */
c7f5d7ed
JD		 108#define W83782D_REG_ALARM1 0x459
109#define W83782D_REG_ALARM2 0x45A
110#define W83782D_REG_ALARM3 0x45B
111
1da177e4
LT		 112#define W83781D_REG_BEEP_CONFIG 0x4D
113#define W83781D_REG_BEEP_INTS1 0x56
114#define W83781D_REG_BEEP_INTS2 0x57
115#define W83781D_REG_BEEP_INTS3 0x453 /* not on W83781D */
116
117#define W83781D_REG_VID_FANDIV 0x47
118
119#define W83781D_REG_CHIPID 0x49
120#define W83781D_REG_WCHIPID 0x58
121#define W83781D_REG_CHIPMAN 0x4F
122#define W83781D_REG_PIN 0x4B
123
124/* 782D/783S only */
125#define W83781D_REG_VBAT 0x5D
126
127/* PWM 782D (1-4) and 783S (1-2) only */
34875337 128static const u8 W83781D_REG_PWM[] = { 0x5B, 0x5A, 0x5E, 0x5F };
1da177e4
LT		 129#define W83781D_REG_PWMCLK12 0x5C
130#define W83781D_REG_PWMCLK34 0x45C
1da177e4
LT		 131
132#define W83781D_REG_I2C_ADDR 0x48
133#define W83781D_REG_I2C_SUBADDR 0x4A
134
aff6e00e
GR		 135/*
136 * The following are undocumented in the data sheets however we
137 * received the information in an email from Winbond tech support
138 */
1da177e4
LT		 139/* Sensor selection - not on 781d */
140#define W83781D_REG_SCFG1 0x5D
141static const u8 BIT_SCFG1[] = { 0x02, 0x04, 0x08 };
142
143#define W83781D_REG_SCFG2 0x59
144static const u8 BIT_SCFG2[] = { 0x10, 0x20, 0x40 };
145
146#define W83781D_DEFAULT_BETA 3435
147
474d00a8 148/* Conversions */
2a844c14 149#define IN_TO_REG(val) clamp_val(((val) + 8) / 16, 0, 255)
474d00a8 150#define IN_FROM_REG(val) ((val) * 16)
1da177e4
LT		 151
152static inline u8
153FAN_TO_REG(long rpm, int div)
154{
155 if (rpm == 0)
156 return 255;
2a844c14
GR		 157 rpm = clamp_val(rpm, 1, 1000000);
158 return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
1da177e4
LT		 159}
160
474d00a8
JD		 161static inline long
162FAN_FROM_REG(u8 val, int div)
163{
164 if (val == 0)
165 return -1;
166 if (val == 255)
167 return 0;
168 return 1350000 / (val * div);
169}
1da177e4 170
2a844c14 171#define TEMP_TO_REG(val) clamp_val((val) / 1000, -127, 128)
474d00a8 172#define TEMP_FROM_REG(val) ((val) * 1000)
1da177e4 173
c531eb3f 174#define BEEP_MASK_FROM_REG(val, type) ((type) == as99127f ? \
2fbbbf14 175 (~(val)) & 0x7fff : (val) & 0xff7fff)
c531eb3f 176#define BEEP_MASK_TO_REG(val, type) ((type) == as99127f ? \
2fbbbf14 177 (~(val)) & 0x7fff : (val) & 0xff7fff)
1da177e4 178
1da177e4
LT		 179#define DIV_FROM_REG(val) (1 << (val))
180
181static inline u8
182DIV_TO_REG(long val, enum chips type)
183{
184 int i;
2a844c14
GR		 185 val = clamp_val(val, 1,
186 ((type == w83781d || type == as99127f) ? 8 : 128)) >> 1;
abc01922 187 for (i = 0; i < 7; i++) {
1da177e4
LT		 188 if (val == 0)
189 break;
190 val >>= 1;
191 }
474d00a8 192 return i;
1da177e4
LT		 193}
194
1da177e4 195struct w83781d_data {
0217eae3 196 struct i2c_client *client;
1beeffe4 197 struct device *hwmon_dev;
9a61bf63 198 struct mutex lock;
1da177e4
LT		 199 enum chips type;
200
360782dd
JD		 201 /* For ISA device only */
202 const char *name;
203 int isa_addr;
204
9a61bf63 205 struct mutex update_lock;
952a11ca 206 bool valid; /* true if following fields are valid */
1da177e4
LT		 207 unsigned long last_updated; /* In jiffies */
208
209 struct i2c_client *lm75[2]; /* for secondary I2C addresses */
210 /* array of 2 pointers to subclients */
211
212 u8 in[9]; /* Register value - 8 & 9 for 782D only */
213 u8 in_max[9]; /* Register value - 8 & 9 for 782D only */
214 u8 in_min[9]; /* Register value - 8 & 9 for 782D only */
215 u8 fan[3]; /* Register value */
216 u8 fan_min[3]; /* Register value */
474d00a8
JD		 217 s8 temp; /* Register value */
218 s8 temp_max; /* Register value */
219 s8 temp_max_hyst; /* Register value */
1da177e4
LT		 220 u16 temp_add[2]; /* Register value */
221 u16 temp_max_add[2]; /* Register value */
222 u16 temp_max_hyst_add[2]; /* Register value */
223 u8 fan_div[3]; /* Register encoding, shifted right */
224 u8 vid; /* Register encoding, combined */
225 u32 alarms; /* Register encoding, combined */
226 u32 beep_mask; /* Register encoding, combined */
1da177e4 227 u8 pwm[4]; /* Register value */
34875337 228 u8 pwm2_enable; /* Boolean */
aff6e00e
GR		 229 u16 sens[3]; /*
230 * 782D/783S only.
231 * 1 = pentium diode; 2 = 3904 diode;
232 * 4 = thermistor
233 */
1da177e4
LT		 234 u8 vrm;
235};
236
443850ce
WG		 237static struct w83781d_data *w83781d_data_if_isa(void);
238static int w83781d_alias_detect(struct i2c_client *client, u8 chipid);
239
31b8dc4d
JD		 240static int w83781d_read_value(struct w83781d_data *data, u16 reg);
241static int w83781d_write_value(struct w83781d_data *data, u16 reg, u16 value);
1da177e4 242static struct w83781d_data *w83781d_update_device(struct device *dev);
7666c13c 243static void w83781d_init_device(struct device *dev);
1da177e4 244
1da177e4
LT		 245/* following are the sysfs callback functions */
246#define show_in_reg(reg) \
c531eb3f 247static ssize_t show_##reg(struct device *dev, struct device_attribute *da, \
34875337 248 char *buf) \
1da177e4 249{ \
34875337 250 struct sensor_device_attribute *attr = to_sensor_dev_attr(da); \
1da177e4 251 struct w83781d_data *data = w83781d_update_device(dev); \
34875337
JD		 252 return sprintf(buf, "%ld\n", \
253 (long)IN_FROM_REG(data->reg[attr->index])); \
1da177e4
LT		 254}
255show_in_reg(in);
256show_in_reg(in_min);
257show_in_reg(in_max);
258
259#define store_in_reg(REG, reg) \
c531eb3f 260static ssize_t store_in_##reg(struct device *dev, struct device_attribute \
34875337 261 *da, const char *buf, size_t count) \
1da177e4 262{ \
34875337 263 struct sensor_device_attribute *attr = to_sensor_dev_attr(da); \
7666c13c 264 struct w83781d_data *data = dev_get_drvdata(dev); \
34875337 265 int nr = attr->index; \
c531eb3f
GR		 266 unsigned long val; \
267 int err = kstrtoul(buf, 10, &val); \
268 if (err) \
269 return err; \
9a61bf63 270 mutex_lock(&data->update_lock); \
1da177e4 271 data->in_##reg[nr] = IN_TO_REG(val); \
c531eb3f
GR		 272 w83781d_write_value(data, W83781D_REG_IN_##REG(nr), \
273 data->in_##reg[nr]); \
274 \
9a61bf63 275 mutex_unlock(&data->update_lock); \
1da177e4
LT		 276 return count; \
277}
278store_in_reg(MIN, min);
279store_in_reg(MAX, max);
280
1da177e4 281#define sysfs_in_offsets(offset) \
34875337
JD		 282static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
283 show_in, NULL, offset); \
284static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
285 show_in_min, store_in_min, offset); \
286static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
287 show_in_max, store_in_max, offset)
1da177e4
LT		 288
289sysfs_in_offsets(0);
290sysfs_in_offsets(1);
291sysfs_in_offsets(2);
292sysfs_in_offsets(3);
293sysfs_in_offsets(4);
294sysfs_in_offsets(5);
295sysfs_in_offsets(6);
296sysfs_in_offsets(7);
297sysfs_in_offsets(8);
298
1da177e4 299#define show_fan_reg(reg) \
c531eb3f 300static ssize_t show_##reg(struct device *dev, struct device_attribute *da, \
34875337 301 char *buf) \
1da177e4 302{ \
34875337 303 struct sensor_device_attribute *attr = to_sensor_dev_attr(da); \
1da177e4 304 struct w83781d_data *data = w83781d_update_device(dev); \
c531eb3f 305 return sprintf(buf, "%ld\n", \
34875337
JD		 306 FAN_FROM_REG(data->reg[attr->index], \
307 DIV_FROM_REG(data->fan_div[attr->index]))); \
1da177e4
LT		 308}
309show_fan_reg(fan);
310show_fan_reg(fan_min);
311
312static ssize_t
34875337
JD		 313store_fan_min(struct device *dev, struct device_attribute *da,
314 const char *buf, size_t count)
1da177e4 315{
34875337 316 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
7666c13c 317 struct w83781d_data *data = dev_get_drvdata(dev);
34875337 318 int nr = attr->index;
c531eb3f
GR		 319 unsigned long val;
320 int err;
1da177e4 321
c531eb3f
GR		 322 err = kstrtoul(buf, 10, &val);
323 if (err)
324 return err;
1da177e4 325
9a61bf63 326 mutex_lock(&data->update_lock);
34875337
JD		 327 data->fan_min[nr] =
328 FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
31b8dc4d 329 w83781d_write_value(data, W83781D_REG_FAN_MIN(nr),
34875337 330 data->fan_min[nr]);
1da177e4 331
9a61bf63 332 mutex_unlock(&data->update_lock);
1da177e4
LT		 333 return count;
334}
335
34875337
JD		 336static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0);
337static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO | S_IWUSR,
338 show_fan_min, store_fan_min, 0);
339static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1);
340static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO | S_IWUSR,
341 show_fan_min, store_fan_min, 1);
342static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2);
343static SENSOR_DEVICE_ATTR(fan3_min, S_IRUGO | S_IWUSR,
344 show_fan_min, store_fan_min, 2);
1da177e4 345
1da177e4 346#define show_temp_reg(reg) \
c531eb3f 347static ssize_t show_##reg(struct device *dev, struct device_attribute *da, \
34875337 348 char *buf) \
1da177e4 349{ \
34875337 350 struct sensor_device_attribute *attr = to_sensor_dev_attr(da); \
1da177e4 351 struct w83781d_data *data = w83781d_update_device(dev); \
34875337 352 int nr = attr->index; \
1da177e4 353 if (nr >= 2) { /* TEMP2 and TEMP3 */ \
c531eb3f 354 return sprintf(buf, "%d\n", \
1da177e4
LT		 355 LM75_TEMP_FROM_REG(data->reg##_add[nr-2])); \
356 } else { /* TEMP1 */ \
c531eb3f 357 return sprintf(buf, "%ld\n", (long)TEMP_FROM_REG(data->reg)); \
1da177e4
LT		 358 } \
359}
360show_temp_reg(temp);
361show_temp_reg(temp_max);
362show_temp_reg(temp_max_hyst);
363
364#define store_temp_reg(REG, reg) \
c531eb3f 365static ssize_t store_temp_##reg(struct device *dev, \
34875337 366 struct device_attribute *da, const char *buf, size_t count) \
1da177e4 367{ \
34875337 368 struct sensor_device_attribute *attr = to_sensor_dev_attr(da); \
7666c13c 369 struct w83781d_data *data = dev_get_drvdata(dev); \
34875337 370 int nr = attr->index; \
5bfedac0 371 long val; \
c531eb3f
GR		 372 int err = kstrtol(buf, 10, &val); \
373 if (err) \
374 return err; \
9a61bf63 375 mutex_lock(&data->update_lock); \
1da177e4
LT		 376 \
377 if (nr >= 2) { /* TEMP2 and TEMP3 */ \
378 data->temp_##reg##_add[nr-2] = LM75_TEMP_TO_REG(val); \
31b8dc4d 379 w83781d_write_value(data, W83781D_REG_TEMP_##REG(nr), \
1da177e4
LT		 380 data->temp_##reg##_add[nr-2]); \
381 } else { /* TEMP1 */ \
382 data->temp_##reg = TEMP_TO_REG(val); \
31b8dc4d 383 w83781d_write_value(data, W83781D_REG_TEMP_##REG(nr), \
1da177e4
LT		 384 data->temp_##reg); \
385 } \
386 \
9a61bf63 387 mutex_unlock(&data->update_lock); \
1da177e4
LT		 388 return count; \
389}
390store_temp_reg(OVER, max);
391store_temp_reg(HYST, max_hyst);
392
1da177e4 393#define sysfs_temp_offsets(offset) \
34875337
JD		 394static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
395 show_temp, NULL, offset); \
396static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
397 show_temp_max, store_temp_max, offset); \
398static SENSOR_DEVICE_ATTR(temp##offset##_max_hyst, S_IRUGO | S_IWUSR, \
399 show_temp_max_hyst, store_temp_max_hyst, offset);
1da177e4
LT		 400
401sysfs_temp_offsets(1);
402sysfs_temp_offsets(2);
403sysfs_temp_offsets(3);
404
1da177e4 405static ssize_t
b80b814b 406cpu0_vid_show(struct device *dev, struct device_attribute *attr, char *buf)
1da177e4
LT		 407{
408 struct w83781d_data *data = w83781d_update_device(dev);
409 return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm));
410}
411
b80b814b 412static DEVICE_ATTR_RO(cpu0_vid);
311ce2ef 413
1da177e4 414static ssize_t
b80b814b 415vrm_show(struct device *dev, struct device_attribute *attr, char *buf)
1da177e4 416{
90d6619a 417 struct w83781d_data *data = dev_get_drvdata(dev);
1da177e4
LT		 418 return sprintf(buf, "%ld\n", (long) data->vrm);
419}
420
421static ssize_t
b80b814b
JL		 422vrm_store(struct device *dev, struct device_attribute *attr, const char *buf,
423 size_t count)
1da177e4 424{
7666c13c 425 struct w83781d_data *data = dev_get_drvdata(dev);
c531eb3f
GR		 426 unsigned long val;
427 int err;
1da177e4 428
c531eb3f
GR		 429 err = kstrtoul(buf, 10, &val);
430 if (err)
431 return err;
2a844c14 432 data->vrm = clamp_val(val, 0, 255);
1da177e4
LT		 433
434 return count;
435}
436
b80b814b 437static DEVICE_ATTR_RW(vrm);
311ce2ef 438
1da177e4 439static ssize_t
b80b814b 440alarms_show(struct device *dev, struct device_attribute *attr, char *buf)
1da177e4
LT		 441{
442 struct w83781d_data *data = w83781d_update_device(dev);
68188ba7 443 return sprintf(buf, "%u\n", data->alarms);
1da177e4
LT		 444}
445
b80b814b 446static DEVICE_ATTR_RO(alarms);
311ce2ef 447
7d4a1374
JD		 448static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
449 char *buf)
450{
451 struct w83781d_data *data = w83781d_update_device(dev);
452 int bitnr = to_sensor_dev_attr(attr)->index;
453 return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
454}
455
456/* The W83781D has a single alarm bit for temp2 and temp3 */
457static ssize_t show_temp3_alarm(struct device *dev,
458 struct device_attribute *attr, char *buf)
459{
460 struct w83781d_data *data = w83781d_update_device(dev);
461 int bitnr = (data->type == w83781d) ? 5 : 13;
462 return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
463}
464
465static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
466static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
467static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2);
468static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3);
469static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8);
470static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 9);
471static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 10);
472static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 16);
473static SENSOR_DEVICE_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 17);
474static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6);
475static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7);
476static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 11);
477static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4);
478static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5);
479static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_temp3_alarm, NULL, 0);
480
b80b814b 481static ssize_t beep_mask_show(struct device *dev,
c531eb3f 482 struct device_attribute *attr, char *buf)
1da177e4
LT		 483{
484 struct w83781d_data *data = w83781d_update_device(dev);
485 return sprintf(buf, "%ld\n",
486 (long)BEEP_MASK_FROM_REG(data->beep_mask, data->type));
487}
1da177e4 488
1da177e4 489static ssize_t
b80b814b 490beep_mask_store(struct device *dev, struct device_attribute *attr,
34875337 491 const char *buf, size_t count)
1da177e4 492{
7666c13c 493 struct w83781d_data *data = dev_get_drvdata(dev);
c531eb3f
GR		 494 unsigned long val;
495 int err;
1da177e4 496
c531eb3f
GR		 497 err = kstrtoul(buf, 10, &val);
498 if (err)
499 return err;
1da177e4 500
9a61bf63 501 mutex_lock(&data->update_lock);
2fbbbf14
JD		 502 data->beep_mask &= 0x8000; /* preserve beep enable */
503 data->beep_mask |= BEEP_MASK_TO_REG(val, data->type);
34875337
JD		 504 w83781d_write_value(data, W83781D_REG_BEEP_INTS1,
505 data->beep_mask & 0xff);
506 w83781d_write_value(data, W83781D_REG_BEEP_INTS2,
2fbbbf14 507 (data->beep_mask >> 8) & 0xff);
34875337
JD		 508 if (data->type != w83781d && data->type != as99127f) {
509 w83781d_write_value(data, W83781D_REG_BEEP_INTS3,
510 ((data->beep_mask) >> 16) & 0xff);
511 }
512 mutex_unlock(&data->update_lock);
1da177e4 513
34875337
JD		 514 return count;
515}
1da177e4 516
b80b814b 517static DEVICE_ATTR_RW(beep_mask);
1da177e4 518
7d4a1374
JD		 519static ssize_t show_beep(struct device *dev, struct device_attribute *attr,
520 char *buf)
521{
522 struct w83781d_data *data = w83781d_update_device(dev);
523 int bitnr = to_sensor_dev_attr(attr)->index;
524 return sprintf(buf, "%u\n", (data->beep_mask >> bitnr) & 1);
525}
526
527static ssize_t
528store_beep(struct device *dev, struct device_attribute *attr,
529 const char *buf, size_t count)
530{
531 struct w83781d_data *data = dev_get_drvdata(dev);
532 int bitnr = to_sensor_dev_attr(attr)->index;
7d4a1374 533 u8 reg;
c531eb3f
GR		 534 unsigned long bit;
535 int err;
536
537 err = kstrtoul(buf, 10, &bit);
538 if (err)
539 return err;
7d4a1374 540
7d4a1374
JD		 541 if (bit & ~1)
542 return -EINVAL;
543
544 mutex_lock(&data->update_lock);
545 if (bit)
546 data->beep_mask |= (1 << bitnr);
547 else
548 data->beep_mask &= ~(1 << bitnr);
549
550 if (bitnr < 8) {
551 reg = w83781d_read_value(data, W83781D_REG_BEEP_INTS1);
552 if (bit)
553 reg |= (1 << bitnr);
554 else
555 reg &= ~(1 << bitnr);
556 w83781d_write_value(data, W83781D_REG_BEEP_INTS1, reg);
557 } else if (bitnr < 16) {
558 reg = w83781d_read_value(data, W83781D_REG_BEEP_INTS2);
559 if (bit)
560 reg |= (1 << (bitnr - 8));
561 else
562 reg &= ~(1 << (bitnr - 8));
563 w83781d_write_value(data, W83781D_REG_BEEP_INTS2, reg);
564 } else {
565 reg = w83781d_read_value(data, W83781D_REG_BEEP_INTS3);
566 if (bit)
567 reg |= (1 << (bitnr - 16));
568 else
569 reg &= ~(1 << (bitnr - 16));
570 w83781d_write_value(data, W83781D_REG_BEEP_INTS3, reg);
571 }
572 mutex_unlock(&data->update_lock);
573
574 return count;
575}
576
577/* The W83781D has a single beep bit for temp2 and temp3 */
578static ssize_t show_temp3_beep(struct device *dev,
579 struct device_attribute *attr, char *buf)
580{
581 struct w83781d_data *data = w83781d_update_device(dev);
582 int bitnr = (data->type == w83781d) ? 5 : 13;
583 return sprintf(buf, "%u\n", (data->beep_mask >> bitnr) & 1);
584}
585
586static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR,
587 show_beep, store_beep, 0);
588static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO | S_IWUSR,
589 show_beep, store_beep, 1);
590static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO | S_IWUSR,
591 show_beep, store_beep, 2);
592static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO | S_IWUSR,
593 show_beep, store_beep, 3);
594static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO | S_IWUSR,
595 show_beep, store_beep, 8);
596static SENSOR_DEVICE_ATTR(in5_beep, S_IRUGO | S_IWUSR,
597 show_beep, store_beep, 9);
598static SENSOR_DEVICE_ATTR(in6_beep, S_IRUGO | S_IWUSR,
599 show_beep, store_beep, 10);
600static SENSOR_DEVICE_ATTR(in7_beep, S_IRUGO | S_IWUSR,
601 show_beep, store_beep, 16);
602static SENSOR_DEVICE_ATTR(in8_beep, S_IRUGO | S_IWUSR,
603 show_beep, store_beep, 17);
604static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO | S_IWUSR,
605 show_beep, store_beep, 6);
606static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO | S_IWUSR,
607 show_beep, store_beep, 7);
608static SENSOR_DEVICE_ATTR(fan3_beep, S_IRUGO | S_IWUSR,
609 show_beep, store_beep, 11);
610static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR,
611 show_beep, store_beep, 4);
612static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO | S_IWUSR,
613 show_beep, store_beep, 5);
614static SENSOR_DEVICE_ATTR(temp3_beep, S_IRUGO,
615 show_temp3_beep, store_beep, 13);
2fbbbf14
JD		 616static SENSOR_DEVICE_ATTR(beep_enable, S_IRUGO | S_IWUSR,
617 show_beep, store_beep, 15);
7d4a1374 618
1da177e4 619static ssize_t
34875337 620show_fan_div(struct device *dev, struct device_attribute *da, char *buf)
1da177e4 621{
34875337 622 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
1da177e4
LT		 623 struct w83781d_data *data = w83781d_update_device(dev);
624 return sprintf(buf, "%ld\n",
34875337 625 (long) DIV_FROM_REG(data->fan_div[attr->index]));
1da177e4
LT		 626}
627
aff6e00e
GR		 628/*
629 * Note: we save and restore the fan minimum here, because its value is
630 * determined in part by the fan divisor. This follows the principle of
631 * least surprise; the user doesn't expect the fan minimum to change just
632 * because the divisor changed.
633 */
1da177e4 634static ssize_t
34875337
JD		 635store_fan_div(struct device *dev, struct device_attribute *da,
636 const char *buf, size_t count)
1da177e4 637{
34875337 638 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
7666c13c 639 struct w83781d_data *data = dev_get_drvdata(dev);
1da177e4 640 unsigned long min;
34875337 641 int nr = attr->index;
1da177e4 642 u8 reg;
c531eb3f
GR		 643 unsigned long val;
644 int err;
645
646 err = kstrtoul(buf, 10, &val);
647 if (err)
648 return err;
1da177e4 649
9a61bf63 650 mutex_lock(&data->update_lock);
293c0997 651
1da177e4
LT		 652 /* Save fan_min */
653 min = FAN_FROM_REG(data->fan_min[nr],
654 DIV_FROM_REG(data->fan_div[nr]));
655
656 data->fan_div[nr] = DIV_TO_REG(val, data->type);
657
c531eb3f
GR		 658 reg = (w83781d_read_value(data, nr == 2 ?
659 W83781D_REG_PIN : W83781D_REG_VID_FANDIV)
660 & (nr == 0 ? 0xcf : 0x3f))
661 | ((data->fan_div[nr] & 0x03) << (nr == 0 ? 4 : 6));
662 w83781d_write_value(data, nr == 2 ?
663 W83781D_REG_PIN : W83781D_REG_VID_FANDIV, reg);
1da177e4
LT		 664
665 /* w83781d and as99127f don't have extended divisor bits */
666 if (data->type != w83781d && data->type != as99127f) {
31b8dc4d 667 reg = (w83781d_read_value(data, W83781D_REG_VBAT)
1da177e4
LT		 668 & ~(1 << (5 + nr)))
669 | ((data->fan_div[nr] & 0x04) << (3 + nr));
31b8dc4d 670 w83781d_write_value(data, W83781D_REG_VBAT, reg);
1da177e4
LT		 671 }
672
673 /* Restore fan_min */
674 data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
34875337 675 w83781d_write_value(data, W83781D_REG_FAN_MIN(nr), data->fan_min[nr]);
1da177e4 676
9a61bf63 677 mutex_unlock(&data->update_lock);
1da177e4
LT		 678 return count;
679}
680
34875337
JD		 681static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR,
682 show_fan_div, store_fan_div, 0);
683static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR,
684 show_fan_div, store_fan_div, 1);
685static SENSOR_DEVICE_ATTR(fan3_div, S_IRUGO | S_IWUSR,
686 show_fan_div, store_fan_div, 2);
1da177e4 687
1da177e4 688static ssize_t
34875337 689show_pwm(struct device *dev, struct device_attribute *da, char *buf)
1da177e4 690{
34875337 691 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
1da177e4 692 struct w83781d_data *data = w83781d_update_device(dev);
34875337 693 return sprintf(buf, "%d\n", (int)data->pwm[attr->index]);
1da177e4
LT		 694}
695
696static ssize_t
b80b814b 697pwm2_enable_show(struct device *dev, struct device_attribute *da, char *buf)
1da177e4
LT		 698{
699 struct w83781d_data *data = w83781d_update_device(dev);
34875337 700 return sprintf(buf, "%d\n", (int)data->pwm2_enable);
1da177e4
LT		 701}
702
703static ssize_t
34875337
JD		 704store_pwm(struct device *dev, struct device_attribute *da, const char *buf,
705 size_t count)
1da177e4 706{
34875337 707 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
7666c13c 708 struct w83781d_data *data = dev_get_drvdata(dev);
34875337 709 int nr = attr->index;
c531eb3f
GR		 710 unsigned long val;
711 int err;
1da177e4 712
c531eb3f
GR		 713 err = kstrtoul(buf, 10, &val);
714 if (err)
715 return err;
1da177e4 716
9a61bf63 717 mutex_lock(&data->update_lock);
2a844c14 718 data->pwm[nr] = clamp_val(val, 0, 255);
34875337 719 w83781d_write_value(data, W83781D_REG_PWM[nr], data->pwm[nr]);
9a61bf63 720 mutex_unlock(&data->update_lock);
1da177e4
LT		 721 return count;
722}
723
724static ssize_t
b80b814b 725pwm2_enable_store(struct device *dev, struct device_attribute *da,
34875337 726 const char *buf, size_t count)
1da177e4 727{
7666c13c 728 struct w83781d_data *data = dev_get_drvdata(dev);
c531eb3f
GR		 729 unsigned long val;
730 u32 reg;
731 int err;
1da177e4 732
c531eb3f
GR		 733 err = kstrtoul(buf, 10, &val);
734 if (err)
735 return err;
1da177e4 736
9a61bf63 737 mutex_lock(&data->update_lock);
1da177e4
LT		 738
739 switch (val) {
740 case 0:
741 case 1:
31b8dc4d
JD		 742 reg = w83781d_read_value(data, W83781D_REG_PWMCLK12);
743 w83781d_write_value(data, W83781D_REG_PWMCLK12,
1da177e4
LT		 744 (reg & 0xf7) | (val << 3));
745
31b8dc4d
JD		 746 reg = w83781d_read_value(data, W83781D_REG_BEEP_CONFIG);
747 w83781d_write_value(data, W83781D_REG_BEEP_CONFIG,
1da177e4
LT		 748 (reg & 0xef) | (!val << 4));
749
34875337 750 data->pwm2_enable = val;
1da177e4
LT		 751 break;
752
753 default:
9a61bf63 754 mutex_unlock(&data->update_lock);
1da177e4
LT		 755 return -EINVAL;
756 }
757
9a61bf63 758 mutex_unlock(&data->update_lock);
1da177e4
LT		 759 return count;
760}
761
34875337
JD		 762static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm, store_pwm, 0);
763static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, show_pwm, store_pwm, 1);
764static SENSOR_DEVICE_ATTR(pwm3, S_IRUGO | S_IWUSR, show_pwm, store_pwm, 2);
765static SENSOR_DEVICE_ATTR(pwm4, S_IRUGO | S_IWUSR, show_pwm, store_pwm, 3);
766/* only PWM2 can be enabled/disabled */
b80b814b 767static DEVICE_ATTR_RW(pwm2_enable);
1da177e4 768
1da177e4 769static ssize_t
34875337 770show_sensor(struct device *dev, struct device_attribute *da, char *buf)
1da177e4 771{
34875337 772 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
1da177e4 773 struct w83781d_data *data = w83781d_update_device(dev);
34875337 774 return sprintf(buf, "%d\n", (int)data->sens[attr->index]);
1da177e4
LT		 775}
776
777static ssize_t
34875337
JD		 778store_sensor(struct device *dev, struct device_attribute *da,
779 const char *buf, size_t count)
1da177e4 780{
34875337 781 struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
7666c13c 782 struct w83781d_data *data = dev_get_drvdata(dev);
34875337 783 int nr = attr->index;
c531eb3f
GR		 784 unsigned long val;
785 u32 tmp;
786 int err;
1da177e4 787
c531eb3f
GR		 788 err = kstrtoul(buf, 10, &val);
789 if (err)
790 return err;
1da177e4 791
9a61bf63 792 mutex_lock(&data->update_lock);
1da177e4
LT		 793
794 switch (val) {
795 case 1: /* PII/Celeron diode */
31b8dc4d
JD		 796 tmp = w83781d_read_value(data, W83781D_REG_SCFG1);
797 w83781d_write_value(data, W83781D_REG_SCFG1,
34875337 798 tmp | BIT_SCFG1[nr]);
31b8dc4d
JD		 799 tmp = w83781d_read_value(data, W83781D_REG_SCFG2);
800 w83781d_write_value(data, W83781D_REG_SCFG2,
34875337
JD		 801 tmp | BIT_SCFG2[nr]);
802 data->sens[nr] = val;
1da177e4
LT		 803 break;
804 case 2: /* 3904 */
31b8dc4d
JD		 805 tmp = w83781d_read_value(data, W83781D_REG_SCFG1);
806 w83781d_write_value(data, W83781D_REG_SCFG1,
34875337 807 tmp | BIT_SCFG1[nr]);
31b8dc4d
JD		 808 tmp = w83781d_read_value(data, W83781D_REG_SCFG2);
809 w83781d_write_value(data, W83781D_REG_SCFG2,
34875337
JD		 810 tmp & ~BIT_SCFG2[nr]);
811 data->sens[nr] = val;
1da177e4 812 break;
b26f9330 813 case W83781D_DEFAULT_BETA:
b55f3757
GR		 814 dev_warn(dev,
815 "Sensor type %d is deprecated, please use 4 instead\n",
816 W83781D_DEFAULT_BETA);
df561f66 817 fallthrough;
b26f9330 818 case 4: /* thermistor */
31b8dc4d
JD		 819 tmp = w83781d_read_value(data, W83781D_REG_SCFG1);
820 w83781d_write_value(data, W83781D_REG_SCFG1,
34875337
JD		 821 tmp & ~BIT_SCFG1[nr]);
822 data->sens[nr] = val;
1da177e4
LT		 823 break;
824 default:
b26f9330
JD		 825 dev_err(dev, "Invalid sensor type %ld; must be 1, 2, or 4\n",
826 (long) val);
1da177e4
LT		 827 break;
828 }
829
9a61bf63 830 mutex_unlock(&data->update_lock);
1da177e4
LT		 831 return count;
832}
833
34875337
JD		 834static SENSOR_DEVICE_ATTR(temp1_type, S_IRUGO | S_IWUSR,
835 show_sensor, store_sensor, 0);
836static SENSOR_DEVICE_ATTR(temp2_type, S_IRUGO | S_IWUSR,
393cdad6 837 show_sensor, store_sensor, 1);
34875337 838static SENSOR_DEVICE_ATTR(temp3_type, S_IRUGO | S_IWUSR,
393cdad6 839 show_sensor, store_sensor, 2);
1da177e4 840
aff6e00e
GR		 841/*
842 * Assumes that adapter is of I2C, not ISA variety.
1da177e4
LT		 843 * OTHERWISE DON'T CALL THIS
844 */
845static int
0217eae3 846w83781d_detect_subclients(struct i2c_client *new_client)
1da177e4
LT		 847{
848 int i, val1 = 0, id;
849 int err;
0217eae3
WG		 850 int address = new_client->addr;
851 unsigned short sc_addr[2];
852 struct i2c_adapter *adapter = new_client->adapter;
1da177e4 853 struct w83781d_data *data = i2c_get_clientdata(new_client);
0217eae3 854 enum chips kind = data->type;
bbc8a569 855 int num_sc = 1;
1da177e4
LT		 856
857 id = i2c_adapter_id(adapter);
858
859 if (force_subclients[0] == id && force_subclients[1] == address) {
860 for (i = 2; i <= 3; i++) {
861 if (force_subclients[i] < 0x48 ||
862 force_subclients[i] > 0x4f) {
b55f3757
GR		 863 dev_err(&new_client->dev,
864 "Invalid subclient address %d; must be 0x48-0x4f\n",
1da177e4
LT		 865 force_subclients[i]);
866 err = -EINVAL;
867 goto ERROR_SC_1;
868 }
869 }
31b8dc4d 870 w83781d_write_value(data, W83781D_REG_I2C_SUBADDR,
1da177e4
LT		 871 (force_subclients[2] & 0x07) |
872 ((force_subclients[3] & 0x07) << 4));
0217eae3 873 sc_addr[0] = force_subclients[2];
1da177e4 874 } else {
31b8dc4d 875 val1 = w83781d_read_value(data, W83781D_REG_I2C_SUBADDR);
0217eae3 876 sc_addr[0] = 0x48 + (val1 & 0x07);
1da177e4
LT		 877 }
878
879 if (kind != w83783s) {
bbc8a569 880 num_sc = 2;
1da177e4
LT		 881 if (force_subclients[0] == id &&
882 force_subclients[1] == address) {
0217eae3 883 sc_addr[1] = force_subclients[3];
1da177e4 884 } else {
0217eae3 885 sc_addr[1] = 0x48 + ((val1 >> 4) & 0x07);
1da177e4 886 }
0217eae3 887 if (sc_addr[0] == sc_addr[1]) {
1da177e4
LT		 888 dev_err(&new_client->dev,
889 "Duplicate addresses 0x%x for subclients.\n",
0217eae3 890 sc_addr[0]);
1da177e4
LT		 891 err = -EBUSY;
892 goto ERROR_SC_2;
893 }
894 }
895
bbc8a569 896 for (i = 0; i < num_sc; i++) {
22e96ce3
WS		 897 data->lm75[i] = i2c_new_dummy_device(adapter, sc_addr[i]);
898 if (IS_ERR(data->lm75[i])) {
b55f3757
GR		 899 dev_err(&new_client->dev,
900 "Subclient %d registration at address 0x%x failed.\n",
901 i, sc_addr[i]);
22e96ce3 902 err = PTR_ERR(data->lm75[i]);
1da177e4
LT		 903 if (i == 1)
904 goto ERROR_SC_3;
905 goto ERROR_SC_2;
906 }
1da177e4
LT		 907 }
908
909 return 0;
910
911/* Undo inits in case of errors */
912ERROR_SC_3:
0217eae3 913 i2c_unregister_device(data->lm75[0]);
1da177e4 914ERROR_SC_2:
1da177e4 915ERROR_SC_1:
1da177e4
LT		 916 return err;
917}
918
34875337
JD		 919#define IN_UNIT_ATTRS(X) \
920 &sensor_dev_attr_in##X##_input.dev_attr.attr, \
921 &sensor_dev_attr_in##X##_min.dev_attr.attr, \
293c0997 922 &sensor_dev_attr_in##X##_max.dev_attr.attr, \
7d4a1374
JD		 923 &sensor_dev_attr_in##X##_alarm.dev_attr.attr, \
924 &sensor_dev_attr_in##X##_beep.dev_attr.attr
311ce2ef 925
34875337
JD		 926#define FAN_UNIT_ATTRS(X) \
927 &sensor_dev_attr_fan##X##_input.dev_attr.attr, \
928 &sensor_dev_attr_fan##X##_min.dev_attr.attr, \
7d4a1374
JD		 929 &sensor_dev_attr_fan##X##_div.dev_attr.attr, \
930 &sensor_dev_attr_fan##X##_alarm.dev_attr.attr, \
931 &sensor_dev_attr_fan##X##_beep.dev_attr.attr
311ce2ef 932
34875337
JD		 933#define TEMP_UNIT_ATTRS(X) \
934 &sensor_dev_attr_temp##X##_input.dev_attr.attr, \
935 &sensor_dev_attr_temp##X##_max.dev_attr.attr, \
7d4a1374
JD		 936 &sensor_dev_attr_temp##X##_max_hyst.dev_attr.attr, \
937 &sensor_dev_attr_temp##X##_alarm.dev_attr.attr, \
938 &sensor_dev_attr_temp##X##_beep.dev_attr.attr
311ce2ef 939
c531eb3f 940static struct attribute *w83781d_attributes[] = {
311ce2ef
JC		 941 IN_UNIT_ATTRS(0),
942 IN_UNIT_ATTRS(2),
943 IN_UNIT_ATTRS(3),
944 IN_UNIT_ATTRS(4),
945 IN_UNIT_ATTRS(5),
946 IN_UNIT_ATTRS(6),
947 FAN_UNIT_ATTRS(1),
948 FAN_UNIT_ATTRS(2),
949 FAN_UNIT_ATTRS(3),
950 TEMP_UNIT_ATTRS(1),
951 TEMP_UNIT_ATTRS(2),
952 &dev_attr_cpu0_vid.attr,
953 &dev_attr_vrm.attr,
954 &dev_attr_alarms.attr,
955 &dev_attr_beep_mask.attr,
2fbbbf14 956 &sensor_dev_attr_beep_enable.dev_attr.attr,
311ce2ef
JC		 957 NULL
958};
959static const struct attribute_group w83781d_group = {
960 .attrs = w83781d_attributes,
961};
962
79501333 963static struct attribute *w83781d_attributes_in1[] = {
311ce2ef 964 IN_UNIT_ATTRS(1),
79501333
GR		 965 NULL
966};
967static const struct attribute_group w83781d_group_in1 = {
968 .attrs = w83781d_attributes_in1,
969};
970
971static struct attribute *w83781d_attributes_in78[] = {
311ce2ef
JC		 972 IN_UNIT_ATTRS(7),
973 IN_UNIT_ATTRS(8),
79501333
GR		 974 NULL
975};
976static const struct attribute_group w83781d_group_in78 = {
977 .attrs = w83781d_attributes_in78,
978};
979
980static struct attribute *w83781d_attributes_temp3[] = {
311ce2ef 981 TEMP_UNIT_ATTRS(3),
79501333
GR		 982 NULL
983};
984static const struct attribute_group w83781d_group_temp3 = {
985 .attrs = w83781d_attributes_temp3,
986};
987
988static struct attribute *w83781d_attributes_pwm12[] = {
34875337
JD		 989 &sensor_dev_attr_pwm1.dev_attr.attr,
990 &sensor_dev_attr_pwm2.dev_attr.attr,
79501333
GR		 991 &dev_attr_pwm2_enable.attr,
992 NULL
993};
994static const struct attribute_group w83781d_group_pwm12 = {
995 .attrs = w83781d_attributes_pwm12,
996};
997
998static struct attribute *w83781d_attributes_pwm34[] = {
34875337
JD		 999 &sensor_dev_attr_pwm3.dev_attr.attr,
1000 &sensor_dev_attr_pwm4.dev_attr.attr,
79501333
GR		 1001 NULL
1002};
1003static const struct attribute_group w83781d_group_pwm34 = {
1004 .attrs = w83781d_attributes_pwm34,
1005};
1006
1007static struct attribute *w83781d_attributes_other[] = {
34875337
JD		 1008 &sensor_dev_attr_temp1_type.dev_attr.attr,
1009 &sensor_dev_attr_temp2_type.dev_attr.attr,
1010 &sensor_dev_attr_temp3_type.dev_attr.attr,
311ce2ef
JC		 1011 NULL
1012};
79501333
GR		 1013static const struct attribute_group w83781d_group_other = {
1014 .attrs = w83781d_attributes_other,
311ce2ef
JC		 1015};
1016
7666c13c 1017/* No clean up is done on error, it's up to the caller */
1da177e4 1018static int
7666c13c 1019w83781d_create_files(struct device *dev, int kind, int is_isa)
1da177e4 1020{
1da177e4 1021 int err;
1da177e4 1022
c531eb3f
GR		 1023 err = sysfs_create_group(&dev->kobj, &w83781d_group);
1024 if (err)
7666c13c
JD		 1025 return err;
1026
1027 if (kind != w83783s) {
79501333
GR		 1028 err = sysfs_create_group(&dev->kobj, &w83781d_group_in1);
1029 if (err)
7666c13c
JD		 1030 return err;
1031 }
1032 if (kind != as99127f && kind != w83781d && kind != w83783s) {
79501333
GR		 1033 err = sysfs_create_group(&dev->kobj, &w83781d_group_in78);
1034 if (err)
7666c13c
JD		 1035 return err;
1036 }
1037 if (kind != w83783s) {
79501333
GR		 1038 err = sysfs_create_group(&dev->kobj, &w83781d_group_temp3);
1039 if (err)
7666c13c 1040 return err;
7d4a1374 1041
7768aa76 1042 if (kind != w83781d) {
7d4a1374
JD		 1043 err = sysfs_chmod_file(&dev->kobj,
1044 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1045 S_IRUGO | S_IWUSR);
1046 if (err)
1047 return err;
7768aa76 1048 }
1da177e4
LT		 1049 }
1050
7666c13c 1051 if (kind != w83781d && kind != as99127f) {
79501333
GR		 1052 err = sysfs_create_group(&dev->kobj, &w83781d_group_pwm12);
1053 if (err)
7666c13c 1054 return err;
1da177e4 1055 }
7666c13c 1056 if (kind == w83782d && !is_isa) {
79501333
GR		 1057 err = sysfs_create_group(&dev->kobj, &w83781d_group_pwm34);
1058 if (err)
7666c13c
JD		 1059 return err;
1060 }
1061
1062 if (kind != as99127f && kind != w83781d) {
79501333
GR		 1063 err = device_create_file(dev,
1064 &sensor_dev_attr_temp1_type.dev_attr);
1065 if (err)
1066 return err;
1067 err = device_create_file(dev,
1068 &sensor_dev_attr_temp2_type.dev_attr);
1069 if (err)
7666c13c
JD		 1070 return err;
1071 if (kind != w83783s) {
c531eb3f 1072 err = device_create_file(dev,
79501333 1073 &sensor_dev_attr_temp3_type.dev_attr);
c531eb3f 1074 if (err)
7666c13c 1075 return err;
1da177e4 1076 }
7666c13c 1077 }
1da177e4 1078
7666c13c
JD		 1079 return 0;
1080}
1da177e4 1081
0217eae3 1082/* Return 0 if detection is successful, -ENODEV otherwise */
7666c13c 1083static int
310ec792 1084w83781d_detect(struct i2c_client *client, struct i2c_board_info *info)
7666c13c 1085{
bab2bf44 1086 int val1, val2;
0217eae3
WG		 1087 struct w83781d_data *isa = w83781d_data_if_isa();
1088 struct i2c_adapter *adapter = client->adapter;
1089 int address = client->addr;
bab2bf44 1090 const char *client_name;
7666c13c
JD		 1091 enum vendor { winbond, asus } vendid;
1092
0217eae3
WG		 1093 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1094 return -ENODEV;
1da177e4 1095
aff6e00e
GR		 1096 /*
1097 * We block updates of the ISA device to minimize the risk of
1098 * concurrent access to the same W83781D chip through different
1099 * interfaces.
1100 */
0217eae3
WG		 1101 if (isa)
1102 mutex_lock(&isa->update_lock);
1da177e4 1103
bab2bf44
JD		 1104 if (i2c_smbus_read_byte_data(client, W83781D_REG_CONFIG) & 0x80) {
1105 dev_dbg(&adapter->dev,
1106 "Detection of w83781d chip failed at step 3\n");
1107 goto err_nodev;
1108 }
1109
1110 val1 = i2c_smbus_read_byte_data(client, W83781D_REG_BANK);
1111 val2 = i2c_smbus_read_byte_data(client, W83781D_REG_CHIPMAN);
1112 /* Check for Winbond or Asus ID if in bank 0 */
1113 if (!(val1 & 0x07) &&
1114 ((!(val1 & 0x80) && val2 != 0xa3 && val2 != 0xc3) ||
c531eb3f 1115 ((val1 & 0x80) && val2 != 0x5c && val2 != 0x12))) {
bab2bf44
JD		 1116 dev_dbg(&adapter->dev,
1117 "Detection of w83781d chip failed at step 4\n");
1118 goto err_nodev;
1119 }
aff6e00e
GR		 1120 /*
1121 * If Winbond SMBus, check address at 0x48.
1122 * Asus doesn't support, except for as99127f rev.2
1123 */
bab2bf44 1124 if ((!(val1 & 0x80) && val2 == 0xa3) ||
c531eb3f 1125 ((val1 & 0x80) && val2 == 0x5c)) {
bab2bf44
JD		 1126 if (i2c_smbus_read_byte_data(client, W83781D_REG_I2C_ADDR)
1127 != address) {
1128 dev_dbg(&adapter->dev,
1129 "Detection of w83781d chip failed at step 5\n");
0217eae3 1130 goto err_nodev;
1da177e4 1131 }
1da177e4
LT		 1132 }
1133
bab2bf44 1134 /* Put it now into bank 0 and Vendor ID High Byte */
0217eae3
WG		 1135 i2c_smbus_write_byte_data(client, W83781D_REG_BANK,
1136 (i2c_smbus_read_byte_data(client, W83781D_REG_BANK)
1137 & 0x78) | 0x80);
1da177e4 1138
bab2bf44
JD		 1139 /* Get the vendor ID */
1140 val2 = i2c_smbus_read_byte_data(client, W83781D_REG_CHIPMAN);
1141 if (val2 == 0x5c)
1142 vendid = winbond;
1143 else if (val2 == 0x12)
1144 vendid = asus;
1145 else {
1146 dev_dbg(&adapter->dev,
1147 "w83781d chip vendor is neither Winbond nor Asus\n");
1148 goto err_nodev;
1da177e4
LT		 1149 }
1150
bab2bf44
JD		 1151 /* Determine the chip type. */
1152 val1 = i2c_smbus_read_byte_data(client, W83781D_REG_WCHIPID);
1153 if ((val1 == 0x10 || val1 == 0x11) && vendid == winbond)
1da177e4 1154 client_name = "w83781d";
bab2bf44 1155 else if (val1 == 0x30 && vendid == winbond)
1da177e4 1156 client_name = "w83782d";
bab2bf44 1157 else if (val1 == 0x40 && vendid == winbond && address == 0x2d)
1da177e4 1158 client_name = "w83783s";
bab2bf44 1159 else if (val1 == 0x31)
1da177e4 1160 client_name = "as99127f";
bab2bf44
JD		 1161 else
1162 goto err_nodev;
1163
1164 if (val1 <= 0x30 && w83781d_alias_detect(client, val1)) {
b55f3757
GR		 1165 dev_dbg(&adapter->dev,
1166 "Device at 0x%02x appears to be the same as ISA device\n",
1167 address);
bab2bf44 1168 goto err_nodev;
1da177e4
LT		 1169 }
1170
bab2bf44
JD		 1171 if (isa)
1172 mutex_unlock(&isa->update_lock);
1173
f2f394db 1174 strscpy(info->type, client_name, I2C_NAME_SIZE);
0217eae3
WG		 1175
1176 return 0;
1177
1178 err_nodev:
1179 if (isa)
1180 mutex_unlock(&isa->update_lock);
1181 return -ENODEV;
1182}
1183
79501333
GR		 1184static void w83781d_remove_files(struct device *dev)
1185{
1186 sysfs_remove_group(&dev->kobj, &w83781d_group);
1187 sysfs_remove_group(&dev->kobj, &w83781d_group_in1);
1188 sysfs_remove_group(&dev->kobj, &w83781d_group_in78);
1189 sysfs_remove_group(&dev->kobj, &w83781d_group_temp3);
1190 sysfs_remove_group(&dev->kobj, &w83781d_group_pwm12);
1191 sysfs_remove_group(&dev->kobj, &w83781d_group_pwm34);
1192 sysfs_remove_group(&dev->kobj, &w83781d_group_other);
1193}
1194
67487038 1195static int w83781d_probe(struct i2c_client *client)
0217eae3
WG		 1196{
1197 struct device *dev = &client->dev;
1198 struct w83781d_data *data;
1199 int err;
1200
144d2b99
GR		 1201 data = devm_kzalloc(dev, sizeof(struct w83781d_data), GFP_KERNEL);
1202 if (!data)
1203 return -ENOMEM;
0217eae3
WG		 1204
1205 i2c_set_clientdata(client, data);
1206 mutex_init(&data->lock);
1207 mutex_init(&data->update_lock);
1da177e4 1208
00dcf379 1209 data->type = (uintptr_t)i2c_get_match_data(client);
0217eae3 1210 data->client = client;
1da177e4
LT		 1211
1212 /* attach secondary i2c lm75-like clients */
0217eae3
WG		 1213 err = w83781d_detect_subclients(client);
1214 if (err)
144d2b99 1215 return err;
1da177e4
LT		 1216
1217 /* Initialize the chip */
7666c13c 1218 w83781d_init_device(dev);
1da177e4
LT		 1219
1220 /* Register sysfs hooks */
0217eae3 1221 err = w83781d_create_files(dev, data->type, 0);
7666c13c 1222 if (err)
144d2b99 1223 goto exit_remove_files;
943b0830 1224
1beeffe4
TJ		 1225 data->hwmon_dev = hwmon_device_register(dev);
1226 if (IS_ERR(data->hwmon_dev)) {
1227 err = PTR_ERR(data->hwmon_dev);
144d2b99 1228 goto exit_remove_files;
1da177e4
LT		 1229 }
1230
1231 return 0;
1232
144d2b99 1233 exit_remove_files:
79501333 1234 w83781d_remove_files(dev);
0ab21d0e
AS		 1235 i2c_unregister_device(data->lm75[0]);
1236 i2c_unregister_device(data->lm75[1]);
1da177e4
LT		 1237 return err;
1238}
1239
ed5c2f5f 1240static void
0217eae3 1241w83781d_remove(struct i2c_client *client)
1da177e4 1242{
943b0830 1243 struct w83781d_data *data = i2c_get_clientdata(client);
0217eae3 1244 struct device *dev = &client->dev;
1da177e4 1245
0217eae3 1246 hwmon_device_unregister(data->hwmon_dev);
79501333 1247 w83781d_remove_files(dev);
1da177e4 1248
0ab21d0e
AS		 1249 i2c_unregister_device(data->lm75[0]);
1250 i2c_unregister_device(data->lm75[1]);
1da177e4
LT		 1251}
1252
1da177e4 1253static int
443850ce 1254w83781d_read_value_i2c(struct w83781d_data *data, u16 reg)
1da177e4 1255{
0217eae3 1256 struct i2c_client *client = data->client;
443850ce 1257 int res, bank;
1da177e4
LT		 1258 struct i2c_client *cl;
1259
443850ce
WG		 1260 bank = (reg >> 8) & 0x0f;
1261 if (bank > 2)
1262 /* switch banks */
1263 i2c_smbus_write_byte_data(client, W83781D_REG_BANK,
1264 bank);
1265 if (bank == 0 || bank > 2) {
1266 res = i2c_smbus_read_byte_data(client, reg & 0xff);
1da177e4 1267 } else {
443850ce
WG		 1268 /* switch to subclient */
1269 cl = data->lm75[bank - 1];
1270 /* convert from ISA to LM75 I2C addresses */
1271 switch (reg & 0xff) {
1272 case 0x50: /* TEMP */
90f4102c 1273 res = i2c_smbus_read_word_swapped(cl, 0);
443850ce
WG		 1274 break;
1275 case 0x52: /* CONFIG */
1276 res = i2c_smbus_read_byte_data(cl, 1);
1277 break;
1278 case 0x53: /* HYST */
90f4102c 1279 res = i2c_smbus_read_word_swapped(cl, 2);
443850ce
WG		 1280 break;
1281 case 0x55: /* OVER */
1282 default:
90f4102c 1283 res = i2c_smbus_read_word_swapped(cl, 3);
443850ce 1284 break;
1da177e4 1285 }
1da177e4 1286 }
443850ce
WG		 1287 if (bank > 2)
1288 i2c_smbus_write_byte_data(client, W83781D_REG_BANK, 0);
1289
1da177e4
LT		 1290 return res;
1291}
1292
1293static int
443850ce 1294w83781d_write_value_i2c(struct w83781d_data *data, u16 reg, u16 value)
1da177e4 1295{
0217eae3 1296 struct i2c_client *client = data->client;
443850ce 1297 int bank;
1da177e4
LT		 1298 struct i2c_client *cl;
1299
443850ce
WG		 1300 bank = (reg >> 8) & 0x0f;
1301 if (bank > 2)
1302 /* switch banks */
1303 i2c_smbus_write_byte_data(client, W83781D_REG_BANK,
1304 bank);
1305 if (bank == 0 || bank > 2) {
1306 i2c_smbus_write_byte_data(client, reg & 0xff,
1307 value & 0xff);
1da177e4 1308 } else {
443850ce
WG		 1309 /* switch to subclient */
1310 cl = data->lm75[bank - 1];
1311 /* convert from ISA to LM75 I2C addresses */
1312 switch (reg & 0xff) {
1313 case 0x52: /* CONFIG */
1314 i2c_smbus_write_byte_data(cl, 1, value & 0xff);
1315 break;
1316 case 0x53: /* HYST */
90f4102c 1317 i2c_smbus_write_word_swapped(cl, 2, value);
443850ce
WG		 1318 break;
1319 case 0x55: /* OVER */
90f4102c 1320 i2c_smbus_write_word_swapped(cl, 3, value);
443850ce 1321 break;
1da177e4 1322 }
1da177e4 1323 }
443850ce
WG		 1324 if (bank > 2)
1325 i2c_smbus_write_byte_data(client, W83781D_REG_BANK, 0);
1326
1da177e4
LT		 1327 return 0;
1328}
1329
1da177e4 1330static void
7666c13c 1331w83781d_init_device(struct device *dev)
1da177e4 1332{
7666c13c 1333 struct w83781d_data *data = dev_get_drvdata(dev);
1da177e4
LT		 1334 int i, p;
1335 int type = data->type;
1336 u8 tmp;
1337
aff6e00e
GR		 1338 if (reset && type != as99127f) { /*
1339 * this resets registers we don't have
1340 * documentation for on the as99127f
1341 */
1342 /*
1343 * Resetting the chip has been the default for a long time,
1344 * but it causes the BIOS initializations (fan clock dividers,
1345 * thermal sensor types...) to be lost, so it is now optional.
1346 * It might even go away if nobody reports it as being useful,
1347 * as I see very little reason why this would be needed at
1348 * all.
1349 */
b55f3757
GR		 1350 dev_info(dev,
1351 "If reset=1 solved a problem you were having, please report!\n");
fabddcd4 1352
1da177e4 1353 /* save these registers */
31b8dc4d
JD		 1354 i = w83781d_read_value(data, W83781D_REG_BEEP_CONFIG);
1355 p = w83781d_read_value(data, W83781D_REG_PWMCLK12);
aff6e00e
GR		 1356 /*
1357 * Reset all except Watchdog values and last conversion values
1358 * This sets fan-divs to 2, among others
1359 */
31b8dc4d 1360 w83781d_write_value(data, W83781D_REG_CONFIG, 0x80);
aff6e00e
GR		 1361 /*
1362 * Restore the registers and disable power-on abnormal beep.
1363 * This saves FAN 1/2/3 input/output values set by BIOS.
1364 */
31b8dc4d
JD		 1365 w83781d_write_value(data, W83781D_REG_BEEP_CONFIG, i | 0x80);
1366 w83781d_write_value(data, W83781D_REG_PWMCLK12, p);
c531eb3f
GR		 1367 /*
1368 * Disable master beep-enable (reset turns it on).
1369 * Individual beep_mask should be reset to off but for some
1370 * reason disabling this bit helps some people not get beeped
1371 */
31b8dc4d 1372 w83781d_write_value(data, W83781D_REG_BEEP_INTS2, 0);
1da177e4
LT		 1373 }
1374
aff6e00e
GR		 1375 /*
1376 * Disable power-on abnormal beep, as advised by the datasheet.
1377 * Already done if reset=1.
1378 */
fabddcd4 1379 if (init && !reset && type != as99127f) {
31b8dc4d
JD		 1380 i = w83781d_read_value(data, W83781D_REG_BEEP_CONFIG);
1381 w83781d_write_value(data, W83781D_REG_BEEP_CONFIG, i | 0x80);
fabddcd4
JD		 1382 }
1383
303760b4 1384 data->vrm = vid_which_vrm();
1da177e4
LT		 1385
1386 if ((type != w83781d) && (type != as99127f)) {
31b8dc4d 1387 tmp = w83781d_read_value(data, W83781D_REG_SCFG1);
1da177e4
LT		 1388 for (i = 1; i <= 3; i++) {
1389 if (!(tmp & BIT_SCFG1[i - 1])) {
b26f9330 1390 data->sens[i - 1] = 4;
1da177e4
LT		 1391 } else {
1392 if (w83781d_read_value
31b8dc4d 1393 (data,
1da177e4
LT		 1394 W83781D_REG_SCFG2) & BIT_SCFG2[i - 1])
1395 data->sens[i - 1] = 1;
1396 else
1397 data->sens[i - 1] = 2;
1398 }
7c7a5304 1399 if (type == w83783s && i == 2)
1da177e4
LT		 1400 break;
1401 }
1402 }
1403
1404 if (init && type != as99127f) {
1405 /* Enable temp2 */
31b8dc4d 1406 tmp = w83781d_read_value(data, W83781D_REG_TEMP2_CONFIG);
1da177e4 1407 if (tmp & 0x01) {
b55f3757
GR		 1408 dev_warn(dev,
1409 "Enabling temp2, readings might not make sense\n");
31b8dc4d 1410 w83781d_write_value(data, W83781D_REG_TEMP2_CONFIG,
1da177e4
LT		 1411 tmp & 0xfe);
1412 }
1413
1414 /* Enable temp3 */
7c7a5304 1415 if (type != w83783s) {
31b8dc4d 1416 tmp = w83781d_read_value(data,
1da177e4
LT		 1417 W83781D_REG_TEMP3_CONFIG);
1418 if (tmp & 0x01) {
b55f3757
GR		 1419 dev_warn(dev,
1420 "Enabling temp3, readings might not make sense\n");
31b8dc4d 1421 w83781d_write_value(data,
1da177e4
LT		 1422 W83781D_REG_TEMP3_CONFIG, tmp & 0xfe);
1423 }
1424 }
1da177e4
LT		 1425 }
1426
1427 /* Start monitoring */
31b8dc4d
JD		 1428 w83781d_write_value(data, W83781D_REG_CONFIG,
1429 (w83781d_read_value(data,
1da177e4
LT		 1430 W83781D_REG_CONFIG) & 0xf7)
1431 | 0x01);
7666c13c
JD		 1432
1433 /* A few vars need to be filled upon startup */
34875337
JD		 1434 for (i = 0; i < 3; i++) {
1435 data->fan_min[i] = w83781d_read_value(data,
7666c13c
JD		 1436 W83781D_REG_FAN_MIN(i));
1437 }
7666c13c
JD		 1438
1439 mutex_init(&data->update_lock);
1da177e4
LT		 1440}
1441
1442static struct w83781d_data *w83781d_update_device(struct device *dev)
1443{
7666c13c 1444 struct w83781d_data *data = dev_get_drvdata(dev);
0217eae3 1445 struct i2c_client *client = data->client;
1da177e4
LT		 1446 int i;
1447
9a61bf63 1448 mutex_lock(&data->update_lock);
1da177e4
LT		 1449
1450 if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
1451 || !data->valid) {
1452 dev_dbg(dev, "Starting device update\n");
1453
1454 for (i = 0; i <= 8; i++) {
7c7a5304 1455 if (data->type == w83783s && i == 1)
1da177e4
LT		 1456 continue; /* 783S has no in1 */
1457 data->in[i] =
31b8dc4d 1458 w83781d_read_value(data, W83781D_REG_IN(i));
1da177e4 1459 data->in_min[i] =
31b8dc4d 1460 w83781d_read_value(data, W83781D_REG_IN_MIN(i));
1da177e4 1461 data->in_max[i] =
31b8dc4d 1462 w83781d_read_value(data, W83781D_REG_IN_MAX(i));
05663368 1463 if ((data->type != w83782d) && (i == 6))
1da177e4
LT		 1464 break;
1465 }
34875337
JD		 1466 for (i = 0; i < 3; i++) {
1467 data->fan[i] =
31b8dc4d 1468 w83781d_read_value(data, W83781D_REG_FAN(i));
34875337 1469 data->fan_min[i] =
31b8dc4d 1470 w83781d_read_value(data, W83781D_REG_FAN_MIN(i));
1da177e4
LT		 1471 }
1472 if (data->type != w83781d && data->type != as99127f) {
34875337
JD		 1473 for (i = 0; i < 4; i++) {
1474 data->pwm[i] =
31b8dc4d 1475 w83781d_read_value(data,
34875337 1476 W83781D_REG_PWM[i]);
848ddf11
JD		 1477 /* Only W83782D on SMBus has PWM3 and PWM4 */
1478 if ((data->type != w83782d || !client)
34875337 1479 && i == 1)
1da177e4
LT		 1480 break;
1481 }
1482 /* Only PWM2 can be disabled */
34875337 1483 data->pwm2_enable = (w83781d_read_value(data,
c531eb3f 1484 W83781D_REG_PWMCLK12) & 0x08) >> 3;
1da177e4
LT		 1485 }
1486
31b8dc4d 1487 data->temp = w83781d_read_value(data, W83781D_REG_TEMP(1));
1da177e4 1488 data->temp_max =
31b8dc4d 1489 w83781d_read_value(data, W83781D_REG_TEMP_OVER(1));
1da177e4 1490 data->temp_max_hyst =
31b8dc4d 1491 w83781d_read_value(data, W83781D_REG_TEMP_HYST(1));
1da177e4 1492 data->temp_add[0] =
31b8dc4d 1493 w83781d_read_value(data, W83781D_REG_TEMP(2));
1da177e4 1494 data->temp_max_add[0] =
31b8dc4d 1495 w83781d_read_value(data, W83781D_REG_TEMP_OVER(2));
1da177e4 1496 data->temp_max_hyst_add[0] =
31b8dc4d 1497 w83781d_read_value(data, W83781D_REG_TEMP_HYST(2));
7c7a5304 1498 if (data->type != w83783s) {
1da177e4 1499 data->temp_add[1] =
31b8dc4d 1500 w83781d_read_value(data, W83781D_REG_TEMP(3));
1da177e4 1501 data->temp_max_add[1] =
31b8dc4d 1502 w83781d_read_value(data,
1da177e4
LT		 1503 W83781D_REG_TEMP_OVER(3));
1504 data->temp_max_hyst_add[1] =
31b8dc4d 1505 w83781d_read_value(data,
1da177e4
LT		 1506 W83781D_REG_TEMP_HYST(3));
1507 }
31b8dc4d 1508 i = w83781d_read_value(data, W83781D_REG_VID_FANDIV);
7c7a5304 1509 data->vid = i & 0x0f;
31b8dc4d 1510 data->vid |= (w83781d_read_value(data,
7c7a5304 1511 W83781D_REG_CHIPID) & 0x01) << 4;
1da177e4
LT		 1512 data->fan_div[0] = (i >> 4) & 0x03;
1513 data->fan_div[1] = (i >> 6) & 0x03;
31b8dc4d 1514 data->fan_div[2] = (w83781d_read_value(data,
7c7a5304 1515 W83781D_REG_PIN) >> 6) & 0x03;
1da177e4 1516 if ((data->type != w83781d) && (data->type != as99127f)) {
31b8dc4d 1517 i = w83781d_read_value(data, W83781D_REG_VBAT);
1da177e4
LT		 1518 data->fan_div[0] |= (i >> 3) & 0x04;
1519 data->fan_div[1] |= (i >> 4) & 0x04;
7c7a5304 1520 data->fan_div[2] |= (i >> 5) & 0x04;
1da177e4 1521 }
05663368 1522 if (data->type == w83782d) {
31b8dc4d 1523 data->alarms = w83781d_read_value(data,
c7f5d7ed 1524 W83782D_REG_ALARM1)
31b8dc4d 1525 | (w83781d_read_value(data,
c7f5d7ed 1526 W83782D_REG_ALARM2) << 8)
31b8dc4d 1527 | (w83781d_read_value(data,
c7f5d7ed
JD		 1528 W83782D_REG_ALARM3) << 16);
1529 } else if (data->type == w83783s) {
31b8dc4d 1530 data->alarms = w83781d_read_value(data,
c7f5d7ed 1531 W83782D_REG_ALARM1)
31b8dc4d 1532 | (w83781d_read_value(data,
c7f5d7ed
JD		 1533 W83782D_REG_ALARM2) << 8);
1534 } else {
aff6e00e
GR		 1535 /*
1536 * No real-time status registers, fall back to
1537 * interrupt status registers
1538 */
31b8dc4d 1539 data->alarms = w83781d_read_value(data,
c7f5d7ed 1540 W83781D_REG_ALARM1)
31b8dc4d 1541 | (w83781d_read_value(data,
c7f5d7ed 1542 W83781D_REG_ALARM2) << 8);
1da177e4 1543 }
31b8dc4d 1544 i = w83781d_read_value(data, W83781D_REG_BEEP_INTS2);
2fbbbf14 1545 data->beep_mask = (i << 8) +
31b8dc4d 1546 w83781d_read_value(data, W83781D_REG_BEEP_INTS1);
1da177e4
LT		 1547 if ((data->type != w83781d) && (data->type != as99127f)) {
1548 data->beep_mask |=
31b8dc4d 1549 w83781d_read_value(data,
1da177e4
LT		 1550 W83781D_REG_BEEP_INTS3) << 16;
1551 }
1552 data->last_updated = jiffies;
952a11ca 1553 data->valid = true;
1da177e4
LT		 1554 }
1555
9a61bf63 1556 mutex_unlock(&data->update_lock);
1da177e4
LT		 1557
1558 return data;
1559}
1560
0217eae3
WG		 1561static const struct i2c_device_id w83781d_ids[] = {
1562 { "w83781d", w83781d, },
1563 { "w83782d", w83782d, },
1564 { "w83783s", w83783s, },
1565 { "as99127f", as99127f },
1566 { /* LIST END */ }
1567};
1568MODULE_DEVICE_TABLE(i2c, w83781d_ids);
1569
2284ed9f
LW		 1570static const struct of_device_id w83781d_of_match[] = {
1571 { .compatible = "winbond,w83781d" },
1572 { .compatible = "winbond,w83781g" },
1573 { .compatible = "winbond,w83782d" },
1574 { .compatible = "winbond,w83783s" },
1575 { .compatible = "asus,as99127f" },
1576 { },
1577};
1578MODULE_DEVICE_TABLE(of, w83781d_of_match);
1579
0217eae3
WG		 1580static struct i2c_driver w83781d_driver = {
1581 .class = I2C_CLASS_HWMON,
1582 .driver = {
1583 .name = "w83781d",
2284ed9f 1584 .of_match_table = w83781d_of_match,
0217eae3 1585 },
1975d167 1586 .probe = w83781d_probe,
0217eae3
WG		 1587 .remove = w83781d_remove,
1588 .id_table = w83781d_ids,
1589 .detect = w83781d_detect,
c3813d6a 1590 .address_list = normal_i2c,
0217eae3
WG		 1591};
1592
1593/*
1594 * ISA related code
1595 */
443850ce
WG		 1596#ifdef CONFIG_ISA
1597
1598/* ISA device, if found */
1599static struct platform_device *pdev;
1600
1601static unsigned short isa_address = 0x290;
1602
aff6e00e
GR		 1603/*
1604 * I2C devices get this name attribute automatically, but for ISA devices
1605 * we must create it by ourselves.
1606 */
443850ce 1607static ssize_t
b80b814b 1608name_show(struct device *dev, struct device_attribute *devattr, char *buf)
443850ce
WG		 1609{
1610 struct w83781d_data *data = dev_get_drvdata(dev);
360782dd 1611 return sprintf(buf, "%s\n", data->name);
443850ce 1612}
b80b814b 1613static DEVICE_ATTR_RO(name);
443850ce
WG		 1614
1615static struct w83781d_data *w83781d_data_if_isa(void)
1616{
1617 return pdev ? platform_get_drvdata(pdev) : NULL;
1618}
1619
1620/* Returns 1 if the I2C chip appears to be an alias of the ISA chip */
1621static int w83781d_alias_detect(struct i2c_client *client, u8 chipid)
1622{
0217eae3 1623 struct w83781d_data *isa;
443850ce
WG		 1624 int i;
1625
1626 if (!pdev) /* No ISA chip */
1627 return 0;
1628
443850ce
WG		 1629 isa = platform_get_drvdata(pdev);
1630
1631 if (w83781d_read_value(isa, W83781D_REG_I2C_ADDR) != client->addr)
1632 return 0; /* Address doesn't match */
1633 if (w83781d_read_value(isa, W83781D_REG_WCHIPID) != chipid)
1634 return 0; /* Chip type doesn't match */
1635
aff6e00e
GR		 1636 /*
1637 * We compare all the limit registers, the config register and the
1638 * interrupt mask registers
1639 */
443850ce 1640 for (i = 0x2b; i <= 0x3d; i++) {
0217eae3
WG		 1641 if (w83781d_read_value(isa, i) !=
1642 i2c_smbus_read_byte_data(client, i))
443850ce
WG		 1643 return 0;
1644 }
1645 if (w83781d_read_value(isa, W83781D_REG_CONFIG) !=
0217eae3 1646 i2c_smbus_read_byte_data(client, W83781D_REG_CONFIG))
443850ce
WG		 1647 return 0;
1648 for (i = 0x43; i <= 0x46; i++) {
0217eae3
WG		 1649 if (w83781d_read_value(isa, i) !=
1650 i2c_smbus_read_byte_data(client, i))
443850ce
WG		 1651 return 0;
1652 }
1653
1654 return 1;
1655}
1656
1657static int
1658w83781d_read_value_isa(struct w83781d_data *data, u16 reg)
1659{
443850ce
WG		 1660 int word_sized, res;
1661
1662 word_sized = (((reg & 0xff00) == 0x100)
1663 || ((reg & 0xff00) == 0x200))
1664 && (((reg & 0x00ff) == 0x50)
1665 || ((reg & 0x00ff) == 0x53)
1666 || ((reg & 0x00ff) == 0x55));
1667 if (reg & 0xff00) {
1668 outb_p(W83781D_REG_BANK,
360782dd 1669 data->isa_addr + W83781D_ADDR_REG_OFFSET);
443850ce 1670 outb_p(reg >> 8,
360782dd 1671 data->isa_addr + W83781D_DATA_REG_OFFSET);
443850ce 1672 }
360782dd
JD		 1673 outb_p(reg & 0xff, data->isa_addr + W83781D_ADDR_REG_OFFSET);
1674 res = inb_p(data->isa_addr + W83781D_DATA_REG_OFFSET);
443850ce
WG		 1675 if (word_sized) {
1676 outb_p((reg & 0xff) + 1,
360782dd 1677 data->isa_addr + W83781D_ADDR_REG_OFFSET);
443850ce 1678 res =
360782dd 1679 (res << 8) + inb_p(data->isa_addr +
443850ce
WG		 1680 W83781D_DATA_REG_OFFSET);
1681 }
1682 if (reg & 0xff00) {
1683 outb_p(W83781D_REG_BANK,
360782dd
JD		 1684 data->isa_addr + W83781D_ADDR_REG_OFFSET);
1685 outb_p(0, data->isa_addr + W83781D_DATA_REG_OFFSET);
443850ce
WG		 1686 }
1687 return res;
1688}
1689
1690static void
1691w83781d_write_value_isa(struct w83781d_data *data, u16 reg, u16 value)
1692{
443850ce
WG		 1693 int word_sized;
1694
1695 word_sized = (((reg & 0xff00) == 0x100)
1696 || ((reg & 0xff00) == 0x200))
1697 && (((reg & 0x00ff) == 0x53)
1698 || ((reg & 0x00ff) == 0x55));
1699 if (reg & 0xff00) {
1700 outb_p(W83781D_REG_BANK,
360782dd 1701 data->isa_addr + W83781D_ADDR_REG_OFFSET);
443850ce 1702 outb_p(reg >> 8,
360782dd 1703 data->isa_addr + W83781D_DATA_REG_OFFSET);
443850ce 1704 }
360782dd 1705 outb_p(reg & 0xff, data->isa_addr + W83781D_ADDR_REG_OFFSET);
443850ce
WG		 1706 if (word_sized) {
1707 outb_p(value >> 8,
360782dd 1708 data->isa_addr + W83781D_DATA_REG_OFFSET);
443850ce 1709 outb_p((reg & 0xff) + 1,
360782dd 1710 data->isa_addr + W83781D_ADDR_REG_OFFSET);
443850ce 1711 }
360782dd 1712 outb_p(value & 0xff, data->isa_addr + W83781D_DATA_REG_OFFSET);
443850ce
WG		 1713 if (reg & 0xff00) {
1714 outb_p(W83781D_REG_BANK,
360782dd
JD		 1715 data->isa_addr + W83781D_ADDR_REG_OFFSET);
1716 outb_p(0, data->isa_addr + W83781D_DATA_REG_OFFSET);
443850ce
WG		 1717 }
1718}
1719
aff6e00e
GR		 1720/*
1721 * The SMBus locks itself, usually, but nothing may access the Winbond between
1722 * bank switches. ISA access must always be locked explicitly!
1723 * We ignore the W83781D BUSY flag at this moment - it could lead to deadlocks,
1724 * would slow down the W83781D access and should not be necessary.
1725 * There are some ugly typecasts here, but the good news is - they should
1726 * nowhere else be necessary!
1727 */
443850ce
WG		 1728static int
1729w83781d_read_value(struct w83781d_data *data, u16 reg)
1730{
0217eae3 1731 struct i2c_client *client = data->client;
443850ce
WG		 1732 int res;
1733
1734 mutex_lock(&data->lock);
0217eae3 1735 if (client)
443850ce
WG		 1736 res = w83781d_read_value_i2c(data, reg);
1737 else
1738 res = w83781d_read_value_isa(data, reg);
1739 mutex_unlock(&data->lock);
1740 return res;
1741}
1742
1743static int
1744w83781d_write_value(struct w83781d_data *data, u16 reg, u16 value)
1745{
0217eae3 1746 struct i2c_client *client = data->client;
443850ce
WG		 1747
1748 mutex_lock(&data->lock);
0217eae3 1749 if (client)
443850ce
WG		 1750 w83781d_write_value_i2c(data, reg, value);
1751 else
1752 w83781d_write_value_isa(data, reg, value);
1753 mutex_unlock(&data->lock);
1754 return 0;
1755}
1756
6c931ae1 1757static int
443850ce
WG		 1758w83781d_isa_probe(struct platform_device *pdev)
1759{
1760 int err, reg;
1761 struct w83781d_data *data;
1762 struct resource *res;
443850ce
WG		 1763
1764 /* Reserve the ISA region */
1765 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
144d2b99
GR		 1766 if (!devm_request_region(&pdev->dev,
1767 res->start + W83781D_ADDR_REG_OFFSET, 2,
1768 "w83781d"))
1769 return -EBUSY;
1770
1771 data = devm_kzalloc(&pdev->dev, sizeof(struct w83781d_data),
1772 GFP_KERNEL);
1773 if (!data)
1774 return -ENOMEM;
443850ce 1775
443850ce 1776 mutex_init(&data->lock);
360782dd 1777 data->isa_addr = res->start;
443850ce
WG		 1778 platform_set_drvdata(pdev, data);
1779
1780 reg = w83781d_read_value(data, W83781D_REG_WCHIPID);
1781 switch (reg) {
1782 case 0x30:
1783 data->type = w83782d;
360782dd 1784 data->name = "w83782d";
443850ce
WG		 1785 break;
1786 default:
1787 data->type = w83781d;
360782dd 1788 data->name = "w83781d";
443850ce 1789 }
443850ce
WG		 1790
1791 /* Initialize the W83781D chip */
1792 w83781d_init_device(&pdev->dev);
1793
1794 /* Register sysfs hooks */
1795 err = w83781d_create_files(&pdev->dev, data->type, 1);
1796 if (err)
1797 goto exit_remove_files;
1798
1799 err = device_create_file(&pdev->dev, &dev_attr_name);
1800 if (err)
1801 goto exit_remove_files;
1802
1803 data->hwmon_dev = hwmon_device_register(&pdev->dev);
1804 if (IS_ERR(data->hwmon_dev)) {
1805 err = PTR_ERR(data->hwmon_dev);
1806 goto exit_remove_files;
1807 }
1808
1809 return 0;
1810
1811 exit_remove_files:
79501333 1812 w83781d_remove_files(&pdev->dev);
443850ce 1813 device_remove_file(&pdev->dev, &dev_attr_name);
443850ce
WG		 1814 return err;
1815}
1816
bc70de33 1817static void w83781d_isa_remove(struct platform_device *pdev)
443850ce
WG		 1818{
1819 struct w83781d_data *data = platform_get_drvdata(pdev);
1820
1821 hwmon_device_unregister(data->hwmon_dev);
79501333 1822 w83781d_remove_files(&pdev->dev);
443850ce 1823 device_remove_file(&pdev->dev, &dev_attr_name);
443850ce
WG		 1824}
1825
1826static struct platform_driver w83781d_isa_driver = {
1827 .driver = {
443850ce
WG		 1828 .name = "w83781d",
1829 },
1830 .probe = w83781d_isa_probe,
bc70de33 1831 .remove_new = w83781d_isa_remove,
443850ce
WG		 1832};
1833
7666c13c
JD		 1834/* return 1 if a supported chip is found, 0 otherwise */
1835static int __init
1836w83781d_isa_found(unsigned short address)
1837{
1838 int val, save, found = 0;
b0bcdd3c
JD		 1839 int port;
1840
aff6e00e
GR		 1841 /*
1842 * Some boards declare base+0 to base+7 as a PNP device, some base+4
b0bcdd3c 1843 * to base+7 and some base+5 to base+6. So we better request each port
aff6e00e
GR		 1844 * individually for the probing phase.
1845 */
b0bcdd3c
JD		 1846 for (port = address; port < address + W83781D_EXTENT; port++) {
1847 if (!request_region(port, 1, "w83781d")) {
1ca28218 1848 pr_debug("Failed to request port 0x%x\n", port);
b0bcdd3c
JD		 1849 goto release;
1850 }
2961cb22 1851 }
7666c13c
JD		 1852
1853#define REALLY_SLOW_IO
aff6e00e
GR		 1854 /*
1855 * We need the timeouts for at least some W83781D-like
1856 * chips. But only if we read 'undefined' registers.
1857 */
7666c13c
JD		 1858 val = inb_p(address + 1);
1859 if (inb_p(address + 2) != val
1860 || inb_p(address + 3) != val
1861 || inb_p(address + 7) != val) {
1ca28218 1862 pr_debug("Detection failed at step %d\n", 1);
7666c13c
JD		 1863 goto release;
1864 }
1865#undef REALLY_SLOW_IO
1866
aff6e00e
GR		 1867 /*
1868 * We should be able to change the 7 LSB of the address port. The
1869 * MSB (busy flag) should be clear initially, set after the write.
1870 */
7666c13c
JD		 1871 save = inb_p(address + W83781D_ADDR_REG_OFFSET);
1872 if (save & 0x80) {
1ca28218 1873 pr_debug("Detection failed at step %d\n", 2);
7666c13c
JD		 1874 goto release;
1875 }
1876 val = ~save & 0x7f;
1877 outb_p(val, address + W83781D_ADDR_REG_OFFSET);
1878 if (inb_p(address + W83781D_ADDR_REG_OFFSET) != (val | 0x80)) {
1879 outb_p(save, address + W83781D_ADDR_REG_OFFSET);
1ca28218 1880 pr_debug("Detection failed at step %d\n", 3);
7666c13c
JD		 1881 goto release;
1882 }
1883
1884 /* We found a device, now see if it could be a W83781D */
1885 outb_p(W83781D_REG_CONFIG, address + W83781D_ADDR_REG_OFFSET);
1886 val = inb_p(address + W83781D_DATA_REG_OFFSET);
1887 if (val & 0x80) {
1ca28218 1888 pr_debug("Detection failed at step %d\n", 4);
7666c13c
JD		 1889 goto release;
1890 }
1891 outb_p(W83781D_REG_BANK, address + W83781D_ADDR_REG_OFFSET);
1892 save = inb_p(address + W83781D_DATA_REG_OFFSET);
1893 outb_p(W83781D_REG_CHIPMAN, address + W83781D_ADDR_REG_OFFSET);
1894 val = inb_p(address + W83781D_DATA_REG_OFFSET);
1895 if ((!(save & 0x80) && (val != 0xa3))
1896 || ((save & 0x80) && (val != 0x5c))) {
1ca28218 1897 pr_debug("Detection failed at step %d\n", 5);
7666c13c
JD		 1898 goto release;
1899 }
1900 outb_p(W83781D_REG_I2C_ADDR, address + W83781D_ADDR_REG_OFFSET);
1901 val = inb_p(address + W83781D_DATA_REG_OFFSET);
1902 if (val < 0x03 || val > 0x77) { /* Not a valid I2C address */
1ca28218 1903 pr_debug("Detection failed at step %d\n", 6);
7666c13c
JD		 1904 goto release;
1905 }
1906
1907 /* The busy flag should be clear again */
1908 if (inb_p(address + W83781D_ADDR_REG_OFFSET) & 0x80) {
1ca28218 1909 pr_debug("Detection failed at step %d\n", 7);
7666c13c
JD		 1910 goto release;
1911 }
1912
1913 /* Determine the chip type */
1914 outb_p(W83781D_REG_BANK, address + W83781D_ADDR_REG_OFFSET);
1915 save = inb_p(address + W83781D_DATA_REG_OFFSET);
1916 outb_p(save & 0xf8, address + W83781D_DATA_REG_OFFSET);
1917 outb_p(W83781D_REG_WCHIPID, address + W83781D_ADDR_REG_OFFSET);
1918 val = inb_p(address + W83781D_DATA_REG_OFFSET);
1919 if ((val & 0xfe) == 0x10 /* W83781D */
05663368 1920 || val == 0x30) /* W83782D */
7666c13c
JD		 1921 found = 1;
1922
1923 if (found)
1ca28218 1924 pr_info("Found a %s chip at %#x\n",
7666c13c
JD		 1925 val == 0x30 ? "W83782D" : "W83781D", (int)address);
1926
1927 release:
b0bcdd3c
JD		 1928 for (port--; port >= address; port--)
1929 release_region(port, 1);
7666c13c
JD		 1930 return found;
1931}
1932
1933static int __init
1934w83781d_isa_device_add(unsigned short address)
1935{
1936 struct resource res = {
1937 .start = address,
15bde2f1 1938 .end = address + W83781D_EXTENT - 1,
7666c13c
JD		 1939 .name = "w83781d",
1940 .flags = IORESOURCE_IO,
1941 };
1942 int err;
1943
1944 pdev = platform_device_alloc("w83781d", address);
1945 if (!pdev) {
1946 err = -ENOMEM;
1ca28218 1947 pr_err("Device allocation failed\n");
7666c13c
JD		 1948 goto exit;
1949 }
1950
1951 err = platform_device_add_resources(pdev, &res, 1);
1952 if (err) {
1ca28218 1953 pr_err("Device resource addition failed (%d)\n", err);
7666c13c
JD		 1954 goto exit_device_put;
1955 }
1956
1957 err = platform_device_add(pdev);
1958 if (err) {
1ca28218 1959 pr_err("Device addition failed (%d)\n", err);
7666c13c
JD		 1960 goto exit_device_put;
1961 }
1962
1963 return 0;
1964
1965 exit_device_put:
1966 platform_device_put(pdev);
1967 exit:
1968 pdev = NULL;
1969 return err;
1970}
1971
1da177e4 1972static int __init
443850ce 1973w83781d_isa_register(void)
1da177e4 1974{
fde09509
JD		 1975 int res;
1976
7666c13c
JD		 1977 if (w83781d_isa_found(isa_address)) {
1978 res = platform_driver_register(&w83781d_isa_driver);
1979 if (res)
c6566206 1980 goto exit;
fde09509 1981
7666c13c
JD		 1982 /* Sets global pdev as a side effect */
1983 res = w83781d_isa_device_add(isa_address);
1984 if (res)
1985 goto exit_unreg_isa_driver;
1986 }
fde09509
JD		 1987
1988 return 0;
7666c13c 1989
443850ce 1990exit_unreg_isa_driver:
7666c13c 1991 platform_driver_unregister(&w83781d_isa_driver);
443850ce 1992exit:
7666c13c 1993 return res;
1da177e4
LT		 1994}
1995
dd56b638 1996static void
443850ce 1997w83781d_isa_unregister(void)
1da177e4 1998{
7666c13c
JD		 1999 if (pdev) {
2000 platform_device_unregister(pdev);
2001 platform_driver_unregister(&w83781d_isa_driver);
2002 }
443850ce
WG		 2003}
2004#else /* !CONFIG_ISA */
2005
2006static struct w83781d_data *w83781d_data_if_isa(void)
2007{
2008 return NULL;
2009}
2010
2011static int
2012w83781d_alias_detect(struct i2c_client *client, u8 chipid)
2013{
2014 return 0;
2015}
2016
2017static int
2018w83781d_read_value(struct w83781d_data *data, u16 reg)
2019{
2020 int res;
2021
2022 mutex_lock(&data->lock);
2023 res = w83781d_read_value_i2c(data, reg);
2024 mutex_unlock(&data->lock);
2025
2026 return res;
2027}
2028
2029static int
2030w83781d_write_value(struct w83781d_data *data, u16 reg, u16 value)
2031{
2032 mutex_lock(&data->lock);
2033 w83781d_write_value_i2c(data, reg, value);
2034 mutex_unlock(&data->lock);
2035
2036 return 0;
2037}
2038
2039static int __init
2040w83781d_isa_register(void)
2041{
2042 return 0;
2043}
2044
dd56b638 2045static void
443850ce
WG		 2046w83781d_isa_unregister(void)
2047{
2048}
2049#endif /* CONFIG_ISA */
2050
2051static int __init
2052sensors_w83781d_init(void)
2053{
2054 int res;
2055
aff6e00e
GR		 2056 /*
2057 * We register the ISA device first, so that we can skip the
2058 * registration of an I2C interface to the same device.
2059 */
443850ce
WG		 2060 res = w83781d_isa_register();
2061 if (res)
2062 goto exit;
2063
2064 res = i2c_add_driver(&w83781d_driver);
2065 if (res)
2066 goto exit_unreg_isa;
2067
2068 return 0;
2069
2070 exit_unreg_isa:
2071 w83781d_isa_unregister();
2072 exit:
2073 return res;
2074}
2075
2076static void __exit
2077sensors_w83781d_exit(void)
2078{
2079 w83781d_isa_unregister();
1da177e4
LT		 2080 i2c_del_driver(&w83781d_driver);
2081}
2082
2083MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, "
2084 "Philip Edelbrock <phil@netroedge.com>, "
2085 "and Mark Studebaker <mdsxyz123@yahoo.com>");
2086MODULE_DESCRIPTION("W83781D driver");
2087MODULE_LICENSE("GPL");
2088
2089module_init(sensors_w83781d_init);
2090module_exit(sensors_w83781d_exit);
Linux 6.x block layer and io_uring tree(s)