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[PATCH] i2c: Semaphore to mutex conversions, part 3
[linux-2.6-block.git] / drivers / hwmon / pc87360.c
CommitLineData
1da177e4
LT		 1/*
2 * pc87360.c - Part of lm_sensors, Linux kernel modules
3 * for hardware monitoring
4 * Copyright (C) 2004 Jean Delvare <khali@linux-fr.org>
5 *
6 * Copied from smsc47m1.c:
7 * Copyright (C) 2002 Mark D. Studebaker <mdsxyz123@yahoo.com>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 *
23 * Supports the following chips:
24 *
25 * Chip #vin #fan #pwm #temp devid
26 * PC87360 - 2 2 - 0xE1
27 * PC87363 - 2 2 - 0xE8
28 * PC87364 - 3 3 - 0xE4
29 * PC87365 11 3 3 2 0xE5
30 * PC87366 11 3 3 3-4 0xE9
31 *
32 * This driver assumes that no more than one chip is present, and one of
33 * the standard Super-I/O addresses is used (0x2E/0x2F or 0x4E/0x4F).
34 */
35
1da177e4
LT		 36#include <linux/module.h>
37#include <linux/init.h>
38#include <linux/slab.h>
39#include <linux/jiffies.h>
40#include <linux/i2c.h>
fde09509 41#include <linux/i2c-isa.h>
943b0830 42#include <linux/hwmon.h>
f0986bd8 43#include <linux/hwmon-sysfs.h>
303760b4 44#include <linux/hwmon-vid.h>
943b0830 45#include <linux/err.h>
1da177e4
LT		 46#include <asm/io.h>
47
1da177e4 48static u8 devid;
2d8672c5
JD		 49static unsigned short address;
50static unsigned short extra_isa[3];
1da177e4
LT		 51static u8 confreg[4];
52
53enum chips { any_chip, pc87360, pc87363, pc87364, pc87365, pc87366 };
1da177e4
LT		 54
55static int init = 1;
56module_param(init, int, 0);
57MODULE_PARM_DESC(init,
58 "Chip initialization level:\n"
59 " 0: None\n"
60 "*1: Forcibly enable internal voltage and temperature channels, except in9\n"
61 " 2: Forcibly enable all voltage and temperature channels, except in9\n"
62 " 3: Forcibly enable all voltage and temperature channels, including in9");
63
64/*
65 * Super-I/O registers and operations
66 */
67
68#define DEV 0x07 /* Register: Logical device select */
69#define DEVID 0x20 /* Register: Device ID */
70#define ACT 0x30 /* Register: Device activation */
71#define BASE 0x60 /* Register: Base address */
72
73#define FSCM 0x09 /* Logical device: fans */
74#define VLM 0x0d /* Logical device: voltages */
75#define TMS 0x0e /* Logical device: temperatures */
76static const u8 logdev[3] = { FSCM, VLM, TMS };
77
78#define LD_FAN 0
79#define LD_IN 1
80#define LD_TEMP 2
81
82static inline void superio_outb(int sioaddr, int reg, int val)
83{
84 outb(reg, sioaddr);
85 outb(val, sioaddr+1);
86}
87
88static inline int superio_inb(int sioaddr, int reg)
89{
90 outb(reg, sioaddr);
91 return inb(sioaddr+1);
92}
93
94static inline void superio_exit(int sioaddr)
95{
96 outb(0x02, sioaddr);
97 outb(0x02, sioaddr+1);
98}
99
100/*
101 * Logical devices
102 */
103
104#define PC87360_EXTENT 0x10
105#define PC87365_REG_BANK 0x09
106#define NO_BANK 0xff
107
108/*
109 * Fan registers and conversions
110 */
111
112/* nr has to be 0 or 1 (PC87360/87363) or 2 (PC87364/87365/87366) */
113#define PC87360_REG_PRESCALE(nr) (0x00 + 2 * (nr))
114#define PC87360_REG_PWM(nr) (0x01 + 2 * (nr))
115#define PC87360_REG_FAN_MIN(nr) (0x06 + 3 * (nr))
116#define PC87360_REG_FAN(nr) (0x07 + 3 * (nr))
117#define PC87360_REG_FAN_STATUS(nr) (0x08 + 3 * (nr))
118
119#define FAN_FROM_REG(val,div) ((val) == 0 ? 0: \
120 480000 / ((val)*(div)))
121#define FAN_TO_REG(val,div) ((val) <= 100 ? 0 : \
122 480000 / ((val)*(div)))
123#define FAN_DIV_FROM_REG(val) (1 << ((val >> 5) & 0x03))
124#define FAN_STATUS_FROM_REG(val) ((val) & 0x07)
125
126#define FAN_CONFIG_MONITOR(val,nr) (((val) >> (2 + nr * 3)) & 1)
127#define FAN_CONFIG_CONTROL(val,nr) (((val) >> (3 + nr * 3)) & 1)
128#define FAN_CONFIG_INVERT(val,nr) (((val) >> (4 + nr * 3)) & 1)
129
130#define PWM_FROM_REG(val,inv) ((inv) ? 255 - (val) : (val))
131static inline u8 PWM_TO_REG(int val, int inv)
132{
133 if (inv)
134 val = 255 - val;
135 if (val < 0)
136 return 0;
137 if (val > 255)
138 return 255;
139 return val;
140}
141
142/*
143 * Voltage registers and conversions
144 */
145
146#define PC87365_REG_IN_CONVRATE 0x07
147#define PC87365_REG_IN_CONFIG 0x08
148#define PC87365_REG_IN 0x0B
149#define PC87365_REG_IN_MIN 0x0D
150#define PC87365_REG_IN_MAX 0x0C
151#define PC87365_REG_IN_STATUS 0x0A
152#define PC87365_REG_IN_ALARMS1 0x00
153#define PC87365_REG_IN_ALARMS2 0x01
154#define PC87365_REG_VID 0x06
155
156#define IN_FROM_REG(val,ref) (((val) * (ref) + 128) / 256)
157#define IN_TO_REG(val,ref) ((val) < 0 ? 0 : \
158 (val)*256 >= (ref)*255 ? 255: \
159 ((val) * 256 + (ref)/2) / (ref))
160
161/*
162 * Temperature registers and conversions
163 */
164
165#define PC87365_REG_TEMP_CONFIG 0x08
166#define PC87365_REG_TEMP 0x0B
167#define PC87365_REG_TEMP_MIN 0x0D
168#define PC87365_REG_TEMP_MAX 0x0C
169#define PC87365_REG_TEMP_CRIT 0x0E
170#define PC87365_REG_TEMP_STATUS 0x0A
171#define PC87365_REG_TEMP_ALARMS 0x00
172
173#define TEMP_FROM_REG(val) ((val) * 1000)
174#define TEMP_TO_REG(val) ((val) < -55000 ? -55 : \
175 (val) > 127000 ? 127 : \
176 (val) < 0 ? ((val) - 500) / 1000 : \
177 ((val) + 500) / 1000)
178
179/*
180 * Client data (each client gets its own)
181 */
182
183struct pc87360_data {
184 struct i2c_client client;
943b0830 185 struct class_device *class_dev;
1da177e4
LT		 186 struct semaphore lock;
187 struct semaphore update_lock;
188 char valid; /* !=0 if following fields are valid */
189 unsigned long last_updated; /* In jiffies */
190
191 int address[3];
192
193 u8 fannr, innr, tempnr;
194
195 u8 fan[3]; /* Register value */
196 u8 fan_min[3]; /* Register value */
197 u8 fan_status[3]; /* Register value */
198 u8 pwm[3]; /* Register value */
199 u16 fan_conf; /* Configuration register values, combined */
200
201 u16 in_vref; /* 1 mV/bit */
202 u8 in[14]; /* Register value */
203 u8 in_min[14]; /* Register value */
204 u8 in_max[14]; /* Register value */
205 u8 in_crit[3]; /* Register value */
206 u8 in_status[14]; /* Register value */
207 u16 in_alarms; /* Register values, combined, masked */
208 u8 vid_conf; /* Configuration register value */
209 u8 vrm;
210 u8 vid; /* Register value */
211
212 s8 temp[3]; /* Register value */
213 s8 temp_min[3]; /* Register value */
214 s8 temp_max[3]; /* Register value */
215 s8 temp_crit[3]; /* Register value */
216 u8 temp_status[3]; /* Register value */
217 u8 temp_alarms; /* Register value, masked */
218};
219
220/*
221 * Functions declaration
222 */
223
2d8672c5 224static int pc87360_detect(struct i2c_adapter *adapter);
1da177e4
LT		 225static int pc87360_detach_client(struct i2c_client *client);
226
227static int pc87360_read_value(struct pc87360_data *data, u8 ldi, u8 bank,
228 u8 reg);
229static void pc87360_write_value(struct pc87360_data *data, u8 ldi, u8 bank,
230 u8 reg, u8 value);
231static void pc87360_init_client(struct i2c_client *client, int use_thermistors);
232static struct pc87360_data *pc87360_update_device(struct device *dev);
233
234/*
235 * Driver data (common to all clients)
236 */
237
238static struct i2c_driver pc87360_driver = {
cdaf7934 239 .driver = {
cdaf7934
LR		 240 .name = "pc87360",
241 },
2d8672c5 242 .attach_adapter = pc87360_detect,
1da177e4
LT		 243 .detach_client = pc87360_detach_client,
244};
245
246/*
247 * Sysfs stuff
248 */
249
f0986bd8
JC		 250static ssize_t show_fan_input(struct device *dev, struct device_attribute *devattr, char *buf)
251{
252 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
253 struct pc87360_data *data = pc87360_update_device(dev);
694fa056
JC		 254 return sprintf(buf, "%u\n", FAN_FROM_REG(data->fan[attr->index],
255 FAN_DIV_FROM_REG(data->fan_status[attr->index])));
f0986bd8
JC		 256}
257static ssize_t show_fan_min(struct device *dev, struct device_attribute *devattr, char *buf)
258{
259 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
260 struct pc87360_data *data = pc87360_update_device(dev);
694fa056
JC		 261 return sprintf(buf, "%u\n", FAN_FROM_REG(data->fan_min[attr->index],
262 FAN_DIV_FROM_REG(data->fan_status[attr->index])));
f0986bd8
JC		 263}
264static ssize_t show_fan_div(struct device *dev, struct device_attribute *devattr, char *buf)
265{
266 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
267 struct pc87360_data *data = pc87360_update_device(dev);
268 return sprintf(buf, "%u\n",
694fa056 269 FAN_DIV_FROM_REG(data->fan_status[attr->index]));
f0986bd8
JC		 270}
271static ssize_t show_fan_status(struct device *dev, struct device_attribute *devattr, char *buf)
272{
273 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
274 struct pc87360_data *data = pc87360_update_device(dev);
275 return sprintf(buf, "%u\n",
694fa056 276 FAN_STATUS_FROM_REG(data->fan_status[attr->index]));
f0986bd8
JC		 277}
278static ssize_t set_fan_min(struct device *dev, struct device_attribute *devattr, const char *buf,
279 size_t count)
280{
281 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
11be27ea
JC		 282 struct i2c_client *client = to_i2c_client(dev);
283 struct pc87360_data *data = i2c_get_clientdata(client);
284 long fan_min = simple_strtol(buf, NULL, 10);
285
286 down(&data->update_lock);
287 fan_min = FAN_TO_REG(fan_min, FAN_DIV_FROM_REG(data->fan_status[attr->index]));
288
289 /* If it wouldn't fit, change clock divisor */
290 while (fan_min > 255
291 && (data->fan_status[attr->index] & 0x60) != 0x60) {
292 fan_min >>= 1;
293 data->fan[attr->index] >>= 1;
294 data->fan_status[attr->index] += 0x20;
295 }
296 data->fan_min[attr->index] = fan_min > 255 ? 255 : fan_min;
297 pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_FAN_MIN(attr->index),
298 data->fan_min[attr->index]);
299
300 /* Write new divider, preserve alarm bits */
301 pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_FAN_STATUS(attr->index),
302 data->fan_status[attr->index] & 0xF9);
303 up(&data->update_lock);
304
305 return count;
f0986bd8
JC		 306}
307
dedc6a78
JC		 308static struct sensor_device_attribute fan_input[] = {
309 SENSOR_ATTR(fan1_input, S_IRUGO, show_fan_input, NULL, 0),
310 SENSOR_ATTR(fan2_input, S_IRUGO, show_fan_input, NULL, 1),
311 SENSOR_ATTR(fan3_input, S_IRUGO, show_fan_input, NULL, 2),
312};
313static struct sensor_device_attribute fan_status[] = {
314 SENSOR_ATTR(fan1_status, S_IRUGO, show_fan_status, NULL, 0),
315 SENSOR_ATTR(fan2_status, S_IRUGO, show_fan_status, NULL, 1),
316 SENSOR_ATTR(fan3_status, S_IRUGO, show_fan_status, NULL, 2),
317};
318static struct sensor_device_attribute fan_div[] = {
319 SENSOR_ATTR(fan1_div, S_IRUGO, show_fan_div, NULL, 0),
320 SENSOR_ATTR(fan2_div, S_IRUGO, show_fan_div, NULL, 1),
321 SENSOR_ATTR(fan3_div, S_IRUGO, show_fan_div, NULL, 2),
322};
323static struct sensor_device_attribute fan_min[] = {
324 SENSOR_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan_min, set_fan_min, 0),
325 SENSOR_ATTR(fan2_min, S_IWUSR | S_IRUGO, show_fan_min, set_fan_min, 1),
326 SENSOR_ATTR(fan3_min, S_IWUSR | S_IRUGO, show_fan_min, set_fan_min, 2),
327};
1da177e4 328
f0986bd8
JC		 329static ssize_t show_pwm(struct device *dev, struct device_attribute *devattr, char *buf)
330{
331 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
332 struct pc87360_data *data = pc87360_update_device(dev);
333 return sprintf(buf, "%u\n",
694fa056 334 PWM_FROM_REG(data->pwm[attr->index],
f0986bd8 335 FAN_CONFIG_INVERT(data->fan_conf,
694fa056 336 attr->index)));
f0986bd8
JC		 337}
338static ssize_t set_pwm(struct device *dev, struct device_attribute *devattr, const char *buf,
339 size_t count)
340{
341 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
342 struct i2c_client *client = to_i2c_client(dev);
343 struct pc87360_data *data = i2c_get_clientdata(client);
344 long val = simple_strtol(buf, NULL, 10);
345
346 down(&data->update_lock);
694fa056
JC		 347 data->pwm[attr->index] = PWM_TO_REG(val,
348 FAN_CONFIG_INVERT(data->fan_conf, attr->index));
349 pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_PWM(attr->index),
350 data->pwm[attr->index]);
f0986bd8
JC		 351 up(&data->update_lock);
352 return count;
353}
354
dedc6a78
JC		 355static struct sensor_device_attribute pwm[] = {
356 SENSOR_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 0),
357 SENSOR_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 1),
358 SENSOR_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 2),
359};
1da177e4 360
f0986bd8
JC		 361static ssize_t show_in_input(struct device *dev, struct device_attribute *devattr, char *buf)
362{
363 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
364 struct pc87360_data *data = pc87360_update_device(dev);
365 return sprintf(buf, "%u\n", IN_FROM_REG(data->in[attr->index],
366 data->in_vref));
367}
368static ssize_t show_in_min(struct device *dev, struct device_attribute *devattr, char *buf)
369{
370 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
371 struct pc87360_data *data = pc87360_update_device(dev);
372 return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[attr->index],
373 data->in_vref));
374}
375static ssize_t show_in_max(struct device *dev, struct device_attribute *devattr, char *buf)
376{
377 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
378 struct pc87360_data *data = pc87360_update_device(dev);
379 return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[attr->index],
380 data->in_vref));
381}
382static ssize_t show_in_status(struct device *dev, struct device_attribute *devattr, char *buf)
383{
384 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
385 struct pc87360_data *data = pc87360_update_device(dev);
386 return sprintf(buf, "%u\n", data->in_status[attr->index]);
387}
388static ssize_t set_in_min(struct device *dev, struct device_attribute *devattr, const char *buf,
389 size_t count)
390{
391 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
392 struct i2c_client *client = to_i2c_client(dev);
393 struct pc87360_data *data = i2c_get_clientdata(client);
394 long val = simple_strtol(buf, NULL, 10);
395
396 down(&data->update_lock);
397 data->in_min[attr->index] = IN_TO_REG(val, data->in_vref);
398 pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_IN_MIN,
399 data->in_min[attr->index]);
400 up(&data->update_lock);
401 return count;
402}
403static ssize_t set_in_max(struct device *dev, struct device_attribute *devattr, const char *buf,
404 size_t count)
405{
406 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
407 struct i2c_client *client = to_i2c_client(dev);
408 struct pc87360_data *data = i2c_get_clientdata(client);
409 long val = simple_strtol(buf, NULL, 10);
410
411 down(&data->update_lock);
412 data->in_max[attr->index] = IN_TO_REG(val,
413 data->in_vref);
414 pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_IN_MAX,
415 data->in_max[attr->index]);
416 up(&data->update_lock);
417 return count;
418}
419
dedc6a78
JC		 420static struct sensor_device_attribute in_input[] = {
421 SENSOR_ATTR(in0_input, S_IRUGO, show_in_input, NULL, 0),
422 SENSOR_ATTR(in1_input, S_IRUGO, show_in_input, NULL, 1),
423 SENSOR_ATTR(in2_input, S_IRUGO, show_in_input, NULL, 2),
424 SENSOR_ATTR(in3_input, S_IRUGO, show_in_input, NULL, 3),
425 SENSOR_ATTR(in4_input, S_IRUGO, show_in_input, NULL, 4),
426 SENSOR_ATTR(in5_input, S_IRUGO, show_in_input, NULL, 5),
427 SENSOR_ATTR(in6_input, S_IRUGO, show_in_input, NULL, 6),
428 SENSOR_ATTR(in7_input, S_IRUGO, show_in_input, NULL, 7),
429 SENSOR_ATTR(in8_input, S_IRUGO, show_in_input, NULL, 8),
430 SENSOR_ATTR(in9_input, S_IRUGO, show_in_input, NULL, 9),
431 SENSOR_ATTR(in10_input, S_IRUGO, show_in_input, NULL, 10),
432};
433static struct sensor_device_attribute in_status[] = {
434 SENSOR_ATTR(in0_status, S_IRUGO, show_in_status, NULL, 0),
435 SENSOR_ATTR(in1_status, S_IRUGO, show_in_status, NULL, 1),
436 SENSOR_ATTR(in2_status, S_IRUGO, show_in_status, NULL, 2),
437 SENSOR_ATTR(in3_status, S_IRUGO, show_in_status, NULL, 3),
438 SENSOR_ATTR(in4_status, S_IRUGO, show_in_status, NULL, 4),
439 SENSOR_ATTR(in5_status, S_IRUGO, show_in_status, NULL, 5),
440 SENSOR_ATTR(in6_status, S_IRUGO, show_in_status, NULL, 6),
441 SENSOR_ATTR(in7_status, S_IRUGO, show_in_status, NULL, 7),
442 SENSOR_ATTR(in8_status, S_IRUGO, show_in_status, NULL, 8),
443 SENSOR_ATTR(in9_status, S_IRUGO, show_in_status, NULL, 9),
444 SENSOR_ATTR(in10_status, S_IRUGO, show_in_status, NULL, 10),
445};
446static struct sensor_device_attribute in_min[] = {
447 SENSOR_ATTR(in0_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 0),
448 SENSOR_ATTR(in1_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 1),
449 SENSOR_ATTR(in2_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 2),
450 SENSOR_ATTR(in3_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 3),
451 SENSOR_ATTR(in4_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 4),
452 SENSOR_ATTR(in5_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 5),
453 SENSOR_ATTR(in6_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 6),
454 SENSOR_ATTR(in7_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 7),
455 SENSOR_ATTR(in8_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 8),
456 SENSOR_ATTR(in9_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 9),
457 SENSOR_ATTR(in10_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 10),
458};
459static struct sensor_device_attribute in_max[] = {
460 SENSOR_ATTR(in0_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 0),
461 SENSOR_ATTR(in1_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 1),
462 SENSOR_ATTR(in2_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 2),
463 SENSOR_ATTR(in3_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 3),
464 SENSOR_ATTR(in4_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 4),
465 SENSOR_ATTR(in5_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 5),
466 SENSOR_ATTR(in6_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 6),
467 SENSOR_ATTR(in7_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 7),
468 SENSOR_ATTR(in8_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 8),
469 SENSOR_ATTR(in9_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 9),
470 SENSOR_ATTR(in10_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 10),
471};
1da177e4 472
f0986bd8
JC		 473static ssize_t show_therm_input(struct device *dev, struct device_attribute *devattr, char *buf)
474{
475 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
476 struct pc87360_data *data = pc87360_update_device(dev);
694fa056 477 return sprintf(buf, "%u\n", IN_FROM_REG(data->in[attr->index],
f0986bd8
JC		 478 data->in_vref));
479}
480static ssize_t show_therm_min(struct device *dev, struct device_attribute *devattr, char *buf)
481{
482 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
483 struct pc87360_data *data = pc87360_update_device(dev);
694fa056 484 return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[attr->index],
f0986bd8
JC		 485 data->in_vref));
486}
487static ssize_t show_therm_max(struct device *dev, struct device_attribute *devattr, char *buf)
488{
489 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
490 struct pc87360_data *data = pc87360_update_device(dev);
694fa056 491 return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[attr->index],
f0986bd8
JC		 492 data->in_vref));
493}
494static ssize_t show_therm_crit(struct device *dev, struct device_attribute *devattr, char *buf)
495{
496 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
497 struct pc87360_data *data = pc87360_update_device(dev);
694fa056 498 return sprintf(buf, "%u\n", IN_FROM_REG(data->in_crit[attr->index-11],
f0986bd8
JC		 499 data->in_vref));
500}
501static ssize_t show_therm_status(struct device *dev, struct device_attribute *devattr, char *buf)
502{
503 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
504 struct pc87360_data *data = pc87360_update_device(dev);
694fa056 505 return sprintf(buf, "%u\n", data->in_status[attr->index]);
f0986bd8
JC		 506}
507static ssize_t set_therm_min(struct device *dev, struct device_attribute *devattr, const char *buf,
508 size_t count)
509{
510 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
511 struct i2c_client *client = to_i2c_client(dev);
512 struct pc87360_data *data = i2c_get_clientdata(client);
513 long val = simple_strtol(buf, NULL, 10);
514
515 down(&data->update_lock);
694fa056
JC		 516 data->in_min[attr->index] = IN_TO_REG(val, data->in_vref);
517 pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_TEMP_MIN,
518 data->in_min[attr->index]);
f0986bd8
JC		 519 up(&data->update_lock);
520 return count;
521}
522static ssize_t set_therm_max(struct device *dev, struct device_attribute *devattr, const char *buf,
523 size_t count)
524{
525 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
526 struct i2c_client *client = to_i2c_client(dev);
527 struct pc87360_data *data = i2c_get_clientdata(client);
528 long val = simple_strtol(buf, NULL, 10);
529
530 down(&data->update_lock);
694fa056
JC		 531 data->in_max[attr->index] = IN_TO_REG(val, data->in_vref);
532 pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_TEMP_MAX,
533 data->in_max[attr->index]);
f0986bd8
JC		 534 up(&data->update_lock);
535 return count;
536}
537static ssize_t set_therm_crit(struct device *dev, struct device_attribute *devattr, const char *buf,
538 size_t count)
539{
540 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
541 struct i2c_client *client = to_i2c_client(dev);
542 struct pc87360_data *data = i2c_get_clientdata(client);
543 long val = simple_strtol(buf, NULL, 10);
544
545 down(&data->update_lock);
694fa056
JC		 546 data->in_crit[attr->index-11] = IN_TO_REG(val, data->in_vref);
547 pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_TEMP_CRIT,
548 data->in_crit[attr->index-11]);
f0986bd8
JC		 549 up(&data->update_lock);
550 return count;
551}
552
dedc6a78
JC		 553/* the +11 term below reflects the fact that VLM units 11,12,13 are
554 used in the chip to measure voltage across the thermistors
555*/
556static struct sensor_device_attribute therm_input[] = {
557 SENSOR_ATTR(temp4_input, S_IRUGO, show_therm_input, NULL, 0+11),
558 SENSOR_ATTR(temp5_input, S_IRUGO, show_therm_input, NULL, 1+11),
559 SENSOR_ATTR(temp6_input, S_IRUGO, show_therm_input, NULL, 2+11),
560};
561static struct sensor_device_attribute therm_status[] = {
562 SENSOR_ATTR(temp4_status, S_IRUGO, show_therm_status, NULL, 0+11),
563 SENSOR_ATTR(temp5_status, S_IRUGO, show_therm_status, NULL, 1+11),
564 SENSOR_ATTR(temp6_status, S_IRUGO, show_therm_status, NULL, 2+11),
565};
566static struct sensor_device_attribute therm_min[] = {
567 SENSOR_ATTR(temp4_min, S_IRUGO | S_IWUSR,
568 show_therm_min, set_therm_min, 0+11),
569 SENSOR_ATTR(temp5_min, S_IRUGO | S_IWUSR,
570 show_therm_min, set_therm_min, 1+11),
571 SENSOR_ATTR(temp6_min, S_IRUGO | S_IWUSR,
572 show_therm_min, set_therm_min, 2+11),
573};
574static struct sensor_device_attribute therm_max[] = {
575 SENSOR_ATTR(temp4_max, S_IRUGO | S_IWUSR,
576 show_therm_max, set_therm_max, 0+11),
577 SENSOR_ATTR(temp5_max, S_IRUGO | S_IWUSR,
578 show_therm_max, set_therm_max, 1+11),
579 SENSOR_ATTR(temp6_max, S_IRUGO | S_IWUSR,
580 show_therm_max, set_therm_max, 2+11),
581};
582static struct sensor_device_attribute therm_crit[] = {
583 SENSOR_ATTR(temp4_crit, S_IRUGO | S_IWUSR,
584 show_therm_crit, set_therm_crit, 0+11),
585 SENSOR_ATTR(temp5_crit, S_IRUGO | S_IWUSR,
586 show_therm_crit, set_therm_crit, 1+11),
587 SENSOR_ATTR(temp6_crit, S_IRUGO | S_IWUSR,
588 show_therm_crit, set_therm_crit, 2+11),
589};
1da177e4 590
a5099cfc 591static ssize_t show_vid(struct device *dev, struct device_attribute *attr, char *buf)
1da177e4
LT		 592{
593 struct pc87360_data *data = pc87360_update_device(dev);
594 return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm));
595}
596static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
597
a5099cfc 598static ssize_t show_vrm(struct device *dev, struct device_attribute *attr, char *buf)
1da177e4
LT		 599{
600 struct pc87360_data *data = pc87360_update_device(dev);
601 return sprintf(buf, "%u\n", data->vrm);
602}
a5099cfc 603static ssize_t set_vrm(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1da177e4
LT		 604{
605 struct i2c_client *client = to_i2c_client(dev);
606 struct pc87360_data *data = i2c_get_clientdata(client);
607 data->vrm = simple_strtoul(buf, NULL, 10);
608 return count;
609}
610static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm);
611
a5099cfc 612static ssize_t show_in_alarms(struct device *dev, struct device_attribute *attr, char *buf)
1da177e4
LT		 613{
614 struct pc87360_data *data = pc87360_update_device(dev);
615 return sprintf(buf, "%u\n", data->in_alarms);
616}
617static DEVICE_ATTR(alarms_in, S_IRUGO, show_in_alarms, NULL);
618
f0986bd8
JC		 619static ssize_t show_temp_input(struct device *dev, struct device_attribute *devattr, char *buf)
620{
621 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
622 struct pc87360_data *data = pc87360_update_device(dev);
694fa056 623 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[attr->index]));
f0986bd8
JC		 624}
625static ssize_t show_temp_min(struct device *dev, struct device_attribute *devattr, char *buf)
626{
627 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
628 struct pc87360_data *data = pc87360_update_device(dev);
694fa056 629 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[attr->index]));
f0986bd8
JC		 630}
631static ssize_t show_temp_max(struct device *dev, struct device_attribute *devattr, char *buf)
632{
633 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
634 struct pc87360_data *data = pc87360_update_device(dev);
694fa056 635 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[attr->index]));
f0986bd8
JC		 636}
637static ssize_t show_temp_crit(struct device *dev, struct device_attribute *devattr, char *buf)
638{
639 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
640 struct pc87360_data *data = pc87360_update_device(dev);
694fa056 641 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit[attr->index]));
f0986bd8
JC		 642}
643static ssize_t show_temp_status(struct device *dev, struct device_attribute *devattr, char *buf)
644{
645 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
646 struct pc87360_data *data = pc87360_update_device(dev);
694fa056 647 return sprintf(buf, "%d\n", data->temp_status[attr->index]);
f0986bd8
JC		 648}
649static ssize_t set_temp_min(struct device *dev, struct device_attribute *devattr, const char *buf,
650 size_t count)
651{
652 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
653 struct i2c_client *client = to_i2c_client(dev);
654 struct pc87360_data *data = i2c_get_clientdata(client);
655 long val = simple_strtol(buf, NULL, 10);
656
657 down(&data->update_lock);
694fa056
JC		 658 data->temp_min[attr->index] = TEMP_TO_REG(val);
659 pc87360_write_value(data, LD_TEMP, attr->index, PC87365_REG_TEMP_MIN,
660 data->temp_min[attr->index]);
f0986bd8
JC		 661 up(&data->update_lock);
662 return count;
663}
664static ssize_t set_temp_max(struct device *dev, struct device_attribute *devattr, const char *buf,
665 size_t count)
666{
667 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
668 struct i2c_client *client = to_i2c_client(dev);
669 struct pc87360_data *data = i2c_get_clientdata(client);
670 long val = simple_strtol(buf, NULL, 10);
671
672 down(&data->update_lock);
694fa056
JC		 673 data->temp_max[attr->index] = TEMP_TO_REG(val);
674 pc87360_write_value(data, LD_TEMP, attr->index, PC87365_REG_TEMP_MAX,
675 data->temp_max[attr->index]);
f0986bd8
JC		 676 up(&data->update_lock);
677 return count;
678}
679static ssize_t set_temp_crit(struct device *dev, struct device_attribute *devattr, const char *buf,
680 size_t count)
681{
682 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
683 struct i2c_client *client = to_i2c_client(dev);
684 struct pc87360_data *data = i2c_get_clientdata(client);
685 long val = simple_strtol(buf, NULL, 10);
686
687 down(&data->update_lock);
694fa056
JC		 688 data->temp_crit[attr->index] = TEMP_TO_REG(val);
689 pc87360_write_value(data, LD_TEMP, attr->index, PC87365_REG_TEMP_CRIT,
690 data->temp_crit[attr->index]);
f0986bd8
JC		 691 up(&data->update_lock);
692 return count;
693}
694
dedc6a78
JC		 695static struct sensor_device_attribute temp_input[] = {
696 SENSOR_ATTR(temp1_input, S_IRUGO, show_temp_input, NULL, 0),
697 SENSOR_ATTR(temp2_input, S_IRUGO, show_temp_input, NULL, 1),
698 SENSOR_ATTR(temp3_input, S_IRUGO, show_temp_input, NULL, 2),
699};
700static struct sensor_device_attribute temp_status[] = {
701 SENSOR_ATTR(temp1_status, S_IRUGO, show_temp_status, NULL, 0),
702 SENSOR_ATTR(temp2_status, S_IRUGO, show_temp_status, NULL, 1),
703 SENSOR_ATTR(temp3_status, S_IRUGO, show_temp_status, NULL, 2),
704};
705static struct sensor_device_attribute temp_min[] = {
706 SENSOR_ATTR(temp1_min, S_IRUGO | S_IWUSR,
707 show_temp_min, set_temp_min, 0),
708 SENSOR_ATTR(temp2_min, S_IRUGO | S_IWUSR,
709 show_temp_min, set_temp_min, 1),
710 SENSOR_ATTR(temp3_min, S_IRUGO | S_IWUSR,
711 show_temp_min, set_temp_min, 2),
712};
713static struct sensor_device_attribute temp_max[] = {
714 SENSOR_ATTR(temp1_max, S_IRUGO | S_IWUSR,
715 show_temp_max, set_temp_max, 0),
716 SENSOR_ATTR(temp2_max, S_IRUGO | S_IWUSR,
717 show_temp_max, set_temp_max, 1),
718 SENSOR_ATTR(temp3_max, S_IRUGO | S_IWUSR,
719 show_temp_max, set_temp_max, 2),
720};
721static struct sensor_device_attribute temp_crit[] = {
722 SENSOR_ATTR(temp1_crit, S_IRUGO | S_IWUSR,
723 show_temp_crit, set_temp_crit, 0),
724 SENSOR_ATTR(temp2_crit, S_IRUGO | S_IWUSR,
725 show_temp_crit, set_temp_crit, 1),
726 SENSOR_ATTR(temp3_crit, S_IRUGO | S_IWUSR,
727 show_temp_crit, set_temp_crit, 2),
728};
1da177e4 729
a5099cfc 730static ssize_t show_temp_alarms(struct device *dev, struct device_attribute *attr, char *buf)
1da177e4
LT		 731{
732 struct pc87360_data *data = pc87360_update_device(dev);
733 return sprintf(buf, "%u\n", data->temp_alarms);
734}
735static DEVICE_ATTR(alarms_temp, S_IRUGO, show_temp_alarms, NULL);
736
737/*
738 * Device detection, registration and update
739 */
740
e6cfb3ad 741static int __init pc87360_find(int sioaddr, u8 *devid, unsigned short *addresses)
1da177e4
LT		 742{
743 u16 val;
744 int i;
745 int nrdev; /* logical device count */
746
747 /* No superio_enter */
748
749 /* Identify device */
750 val = superio_inb(sioaddr, DEVID);
751 switch (val) {
752 case 0xE1: /* PC87360 */
753 case 0xE8: /* PC87363 */
754 case 0xE4: /* PC87364 */
755 nrdev = 1;
756 break;
757 case 0xE5: /* PC87365 */
758 case 0xE9: /* PC87366 */
759 nrdev = 3;
760 break;
761 default:
762 superio_exit(sioaddr);
763 return -ENODEV;
764 }
765 /* Remember the device id */
766 *devid = val;
767
768 for (i = 0; i < nrdev; i++) {
769 /* select logical device */
770 superio_outb(sioaddr, DEV, logdev[i]);
771
772 val = superio_inb(sioaddr, ACT);
773 if (!(val & 0x01)) {
774 printk(KERN_INFO "pc87360: Device 0x%02x not "
775 "activated\n", logdev[i]);
776 continue;
777 }
778
779 val = (superio_inb(sioaddr, BASE) << 8)
780 | superio_inb(sioaddr, BASE + 1);
781 if (!val) {
782 printk(KERN_INFO "pc87360: Base address not set for "
783 "device 0x%02x\n", logdev[i]);
784 continue;
785 }
786
2d8672c5 787 addresses[i] = val;
1da177e4
LT		 788
789 if (i==0) { /* Fans */
790 confreg[0] = superio_inb(sioaddr, 0xF0);
791 confreg[1] = superio_inb(sioaddr, 0xF1);
792
793#ifdef DEBUG
794 printk(KERN_DEBUG "pc87360: Fan 1: mon=%d "
795 "ctrl=%d inv=%d\n", (confreg[0]>>2)&1,
796 (confreg[0]>>3)&1, (confreg[0]>>4)&1);
797 printk(KERN_DEBUG "pc87360: Fan 2: mon=%d "
798 "ctrl=%d inv=%d\n", (confreg[0]>>5)&1,
799 (confreg[0]>>6)&1, (confreg[0]>>7)&1);
800 printk(KERN_DEBUG "pc87360: Fan 3: mon=%d "
801 "ctrl=%d inv=%d\n", confreg[1]&1,
802 (confreg[1]>>1)&1, (confreg[1]>>2)&1);
803#endif
804 } else if (i==1) { /* Voltages */
805 /* Are we using thermistors? */
806 if (*devid == 0xE9) { /* PC87366 */
807 /* These registers are not logical-device
808 specific, just that we won't need them if
809 we don't use the VLM device */
810 confreg[2] = superio_inb(sioaddr, 0x2B);
811 confreg[3] = superio_inb(sioaddr, 0x25);
812
813 if (confreg[2] & 0x40) {
814 printk(KERN_INFO "pc87360: Using "
815 "thermistors for temperature "
816 "monitoring\n");
817 }
818 if (confreg[3] & 0xE0) {
819 printk(KERN_INFO "pc87360: VID "
820 "inputs routed (mode %u)\n",
821 confreg[3] >> 5);
822 }
823 }
824 }
825 }
826
827 superio_exit(sioaddr);
828 return 0;
829}
830
2d8672c5 831static int pc87360_detect(struct i2c_adapter *adapter)
1da177e4
LT		 832{
833 int i;
dedc6a78 834 struct i2c_client *client;
1da177e4
LT		 835 struct pc87360_data *data;
836 int err = 0;
837 const char *name = "pc87360";
838 int use_thermistors = 0;
dedc6a78 839 struct device *dev;
1da177e4 840
ba9c2e8d 841 if (!(data = kzalloc(sizeof(struct pc87360_data), GFP_KERNEL)))
1da177e4 842 return -ENOMEM;
1da177e4 843
dedc6a78
JC		 844 client = &data->client;
845 dev = &client->dev;
846 i2c_set_clientdata(client, data);
847 client->addr = address;
1da177e4 848 init_MUTEX(&data->lock);
dedc6a78
JC		 849 client->adapter = adapter;
850 client->driver = &pc87360_driver;
851 client->flags = 0;
1da177e4
LT		 852
853 data->fannr = 2;
854 data->innr = 0;
855 data->tempnr = 0;
856
857 switch (devid) {
858 case 0xe8:
859 name = "pc87363";
860 break;
861 case 0xe4:
862 name = "pc87364";
863 data->fannr = 3;
864 break;
865 case 0xe5:
866 name = "pc87365";
867 data->fannr = extra_isa[0] ? 3 : 0;
868 data->innr = extra_isa[1] ? 11 : 0;
869 data->tempnr = extra_isa[2] ? 2 : 0;
870 break;
871 case 0xe9:
872 name = "pc87366";
873 data->fannr = extra_isa[0] ? 3 : 0;
874 data->innr = extra_isa[1] ? 14 : 0;
875 data->tempnr = extra_isa[2] ? 3 : 0;
876 break;
877 }
878
dedc6a78 879 strlcpy(client->name, name, sizeof(client->name));
1da177e4
LT		 880 data->valid = 0;
881 init_MUTEX(&data->update_lock);
882
883 for (i = 0; i < 3; i++) {
884 if (((data->address[i] = extra_isa[i]))
885 && !request_region(extra_isa[i], PC87360_EXTENT,
cdaf7934 886 pc87360_driver.driver.name)) {
dedc6a78 887 dev_err(&client->dev, "Region 0x%x-0x%x already "
1da177e4
LT		 888 "in use!\n", extra_isa[i],
889 extra_isa[i]+PC87360_EXTENT-1);
890 for (i--; i >= 0; i--)
891 release_region(extra_isa[i], PC87360_EXTENT);
892 err = -EBUSY;
893 goto ERROR1;
894 }
895 }
896
897 /* Retrieve the fans configuration from Super-I/O space */
898 if (data->fannr)
899 data->fan_conf = confreg[0] | (confreg[1] << 8);
900
dedc6a78 901 if ((err = i2c_attach_client(client)))
1da177e4
LT		 902 goto ERROR2;
903
904 /* Use the correct reference voltage
905 Unless both the VLM and the TMS logical devices agree to
906 use an external Vref, the internal one is used. */
907 if (data->innr) {
908 i = pc87360_read_value(data, LD_IN, NO_BANK,
909 PC87365_REG_IN_CONFIG);
910 if (data->tempnr) {
911 i &= pc87360_read_value(data, LD_TEMP, NO_BANK,
912 PC87365_REG_TEMP_CONFIG);
913 }
914 data->in_vref = (i&0x02) ? 3025 : 2966;
dedc6a78 915 dev_dbg(&client->dev, "Using %s reference voltage\n",
1da177e4
LT		 916 (i&0x02) ? "external" : "internal");
917
918 data->vid_conf = confreg[3];
919 data->vrm = 90;
920 }
921
922 /* Fan clock dividers may be needed before any data is read */
923 for (i = 0; i < data->fannr; i++) {
924 if (FAN_CONFIG_MONITOR(data->fan_conf, i))
925 data->fan_status[i] = pc87360_read_value(data,
926 LD_FAN, NO_BANK,
927 PC87360_REG_FAN_STATUS(i));
928 }
929
930 if (init > 0) {
931 if (devid == 0xe9 && data->address[1]) /* PC87366 */
932 use_thermistors = confreg[2] & 0x40;
933
dedc6a78 934 pc87360_init_client(client, use_thermistors);
1da177e4
LT		 935 }
936
937 /* Register sysfs hooks */
dedc6a78 938 data->class_dev = hwmon_device_register(&client->dev);
943b0830
MH		 939 if (IS_ERR(data->class_dev)) {
940 err = PTR_ERR(data->class_dev);
941 goto ERROR3;
942 }
943
1da177e4 944 if (data->innr) {
dedc6a78
JC		 945 for (i = 0; i < 11; i++) {
946 device_create_file(dev, &in_input[i].dev_attr);
947 device_create_file(dev, &in_min[i].dev_attr);
948 device_create_file(dev, &in_max[i].dev_attr);
949 device_create_file(dev, &in_status[i].dev_attr);
950 }
951 device_create_file(dev, &dev_attr_cpu0_vid);
952 device_create_file(dev, &dev_attr_vrm);
953 device_create_file(dev, &dev_attr_alarms_in);
1da177e4
LT		 954 }
955
956 if (data->tempnr) {
dedc6a78
JC		 957 for (i = 0; i < data->tempnr; i++) {
958 device_create_file(dev, &temp_input[i].dev_attr);
959 device_create_file(dev, &temp_min[i].dev_attr);
960 device_create_file(dev, &temp_max[i].dev_attr);
961 device_create_file(dev, &temp_crit[i].dev_attr);
962 device_create_file(dev, &temp_status[i].dev_attr);
1da177e4 963 }
dedc6a78
JC		 964 device_create_file(dev, &dev_attr_alarms_temp);
965 }
1da177e4 966
dedc6a78
JC		 967 if (data->innr == 14) {
968 for (i = 0; i < 3; i++) {
969 device_create_file(dev, &therm_input[i].dev_attr);
970 device_create_file(dev, &therm_min[i].dev_attr);
971 device_create_file(dev, &therm_max[i].dev_attr);
972 device_create_file(dev, &therm_crit[i].dev_attr);
973 device_create_file(dev, &therm_status[i].dev_attr);
1da177e4 974 }
1da177e4 975 }
1da177e4 976
dedc6a78
JC		 977 for (i = 0; i < data->fannr; i++) {
978 if (FAN_CONFIG_MONITOR(data->fan_conf, i)) {
979 device_create_file(dev, &fan_input[i].dev_attr);
980 device_create_file(dev, &fan_min[i].dev_attr);
981 device_create_file(dev, &fan_div[i].dev_attr);
982 device_create_file(dev, &fan_status[i].dev_attr);
983 }
984 if (FAN_CONFIG_CONTROL(data->fan_conf, i))
985 device_create_file(dev, &pwm[i].dev_attr);
1da177e4
LT		 986 }
987
988 return 0;
989
943b0830 990ERROR3:
dedc6a78 991 i2c_detach_client(client);
1da177e4
LT		 992ERROR2:
993 for (i = 0; i < 3; i++) {
994 if (data->address[i]) {
995 release_region(data->address[i], PC87360_EXTENT);
996 }
997 }
998ERROR1:
999 kfree(data);
1000 return err;
1001}
1002
1003static int pc87360_detach_client(struct i2c_client *client)
1004{
1005 struct pc87360_data *data = i2c_get_clientdata(client);
1006 int i;
1007
943b0830
MH		 1008 hwmon_device_unregister(data->class_dev);
1009
7bef5594 1010 if ((i = i2c_detach_client(client)))
1da177e4 1011 return i;
1da177e4
LT		 1012
1013 for (i = 0; i < 3; i++) {
1014 if (data->address[i]) {
1015 release_region(data->address[i], PC87360_EXTENT);
1016 }
1017 }
1018 kfree(data);
1019
1020 return 0;
1021}
1022
1023/* ldi is the logical device index
1024 bank is for voltages and temperatures only */
1025static int pc87360_read_value(struct pc87360_data *data, u8 ldi, u8 bank,
1026 u8 reg)
1027{
1028 int res;
1029
1030 down(&(data->lock));
1031 if (bank != NO_BANK)
1032 outb_p(bank, data->address[ldi] + PC87365_REG_BANK);
1033 res = inb_p(data->address[ldi] + reg);
1034 up(&(data->lock));
1035
1036 return res;
1037}
1038
1039static void pc87360_write_value(struct pc87360_data *data, u8 ldi, u8 bank,
1040 u8 reg, u8 value)
1041{
1042 down(&(data->lock));
1043 if (bank != NO_BANK)
1044 outb_p(bank, data->address[ldi] + PC87365_REG_BANK);
1045 outb_p(value, data->address[ldi] + reg);
1046 up(&(data->lock));
1047}
1048
1049static void pc87360_init_client(struct i2c_client *client, int use_thermistors)
1050{
1051 struct pc87360_data *data = i2c_get_clientdata(client);
1052 int i, nr;
1053 const u8 init_in[14] = { 2, 2, 2, 2, 2, 2, 2, 1, 1, 3, 1, 2, 2, 2 };
1054 const u8 init_temp[3] = { 2, 2, 1 };
1055 u8 reg;
1056
1057 if (init >= 2 && data->innr) {
1058 reg = pc87360_read_value(data, LD_IN, NO_BANK,
1059 PC87365_REG_IN_CONVRATE);
368609c5 1060 dev_info(&client->dev, "VLM conversion set to "
1da177e4
LT		 1061 "1s period, 160us delay\n");
1062 pc87360_write_value(data, LD_IN, NO_BANK,
1063 PC87365_REG_IN_CONVRATE,
1064 (reg & 0xC0) | 0x11);
1065 }
1066
1067 nr = data->innr < 11 ? data->innr : 11;
dedc6a78 1068 for (i = 0; i < nr; i++) {
1da177e4
LT		 1069 if (init >= init_in[i]) {
1070 /* Forcibly enable voltage channel */
1071 reg = pc87360_read_value(data, LD_IN, i,
1072 PC87365_REG_IN_STATUS);
1073 if (!(reg & 0x01)) {
1074 dev_dbg(&client->dev, "Forcibly "
1075 "enabling in%d\n", i);
1076 pc87360_write_value(data, LD_IN, i,
1077 PC87365_REG_IN_STATUS,
1078 (reg & 0x68) | 0x87);
1079 }
1080 }
1081 }
1082
1083 /* We can't blindly trust the Super-I/O space configuration bit,
1084 most BIOS won't set it properly */
dedc6a78 1085 for (i = 11; i < data->innr; i++) {
1da177e4
LT		 1086 reg = pc87360_read_value(data, LD_IN, i,
1087 PC87365_REG_TEMP_STATUS);
1088 use_thermistors = use_thermistors || (reg & 0x01);
1089 }
1090
1091 i = use_thermistors ? 2 : 0;
dedc6a78 1092 for (; i < data->tempnr; i++) {
1da177e4
LT		 1093 if (init >= init_temp[i]) {
1094 /* Forcibly enable temperature channel */
1095 reg = pc87360_read_value(data, LD_TEMP, i,
1096 PC87365_REG_TEMP_STATUS);
1097 if (!(reg & 0x01)) {
1098 dev_dbg(&client->dev, "Forcibly "
1099 "enabling temp%d\n", i+1);
1100 pc87360_write_value(data, LD_TEMP, i,
1101 PC87365_REG_TEMP_STATUS,
1102 0xCF);
1103 }
1104 }
1105 }
1106
1107 if (use_thermistors) {
dedc6a78 1108 for (i = 11; i < data->innr; i++) {
1da177e4
LT		 1109 if (init >= init_in[i]) {
1110 /* The pin may already be used by thermal
1111 diodes */
1112 reg = pc87360_read_value(data, LD_TEMP,
1113 (i-11)/2, PC87365_REG_TEMP_STATUS);
1114 if (reg & 0x01) {
1115 dev_dbg(&client->dev, "Skipping "
1116 "temp%d, pin already in use "
1117 "by temp%d\n", i-7, (i-11)/2);
1118 continue;
1119 }
1120
1121 /* Forcibly enable thermistor channel */
1122 reg = pc87360_read_value(data, LD_IN, i,
1123 PC87365_REG_IN_STATUS);
1124 if (!(reg & 0x01)) {
1125 dev_dbg(&client->dev, "Forcibly "
1126 "enabling temp%d\n", i-7);
1127 pc87360_write_value(data, LD_IN, i,
1128 PC87365_REG_TEMP_STATUS,
1129 (reg & 0x60) | 0x8F);
1130 }
1131 }
1132 }
1133 }
1134
1135 if (data->innr) {
1136 reg = pc87360_read_value(data, LD_IN, NO_BANK,
1137 PC87365_REG_IN_CONFIG);
1138 if (reg & 0x01) {
1139 dev_dbg(&client->dev, "Forcibly "
1140 "enabling monitoring (VLM)\n");
1141 pc87360_write_value(data, LD_IN, NO_BANK,
1142 PC87365_REG_IN_CONFIG,
1143 reg & 0xFE);
1144 }
1145 }
1146
1147 if (data->tempnr) {
1148 reg = pc87360_read_value(data, LD_TEMP, NO_BANK,
1149 PC87365_REG_TEMP_CONFIG);
1150 if (reg & 0x01) {
1151 dev_dbg(&client->dev, "Forcibly enabling "
1152 "monitoring (TMS)\n");
1153 pc87360_write_value(data, LD_TEMP, NO_BANK,
1154 PC87365_REG_TEMP_CONFIG,
1155 reg & 0xFE);
1156 }
1157
1158 if (init >= 2) {
1159 /* Chip config as documented by National Semi. */
1160 pc87360_write_value(data, LD_TEMP, 0xF, 0xA, 0x08);
1161 /* We voluntarily omit the bank here, in case the
1162 sequence itself matters. It shouldn't be a problem,
1163 since nobody else is supposed to access the
1164 device at that point. */
1165 pc87360_write_value(data, LD_TEMP, NO_BANK, 0xB, 0x04);
1166 pc87360_write_value(data, LD_TEMP, NO_BANK, 0xC, 0x35);
1167 pc87360_write_value(data, LD_TEMP, NO_BANK, 0xD, 0x05);
1168 pc87360_write_value(data, LD_TEMP, NO_BANK, 0xE, 0x05);
1169 }
1170 }
1171}
1172
1173static void pc87360_autodiv(struct i2c_client *client, int nr)
1174{
1175 struct pc87360_data *data = i2c_get_clientdata(client);
1176 u8 old_min = data->fan_min[nr];
1177
1178 /* Increase clock divider if needed and possible */
1179 if ((data->fan_status[nr] & 0x04) /* overflow flag */
1180 || (data->fan[nr] >= 224)) { /* next to overflow */
1181 if ((data->fan_status[nr] & 0x60) != 0x60) {
1182 data->fan_status[nr] += 0x20;
1183 data->fan_min[nr] >>= 1;
1184 data->fan[nr] >>= 1;
1185 dev_dbg(&client->dev, "Increasing "
1186 "clock divider to %d for fan %d\n",
1187 FAN_DIV_FROM_REG(data->fan_status[nr]), nr+1);
1188 }
1189 } else {
1190 /* Decrease clock divider if possible */
1191 while (!(data->fan_min[nr] & 0x80) /* min "nails" divider */
1192 && data->fan[nr] < 85 /* bad accuracy */
1193 && (data->fan_status[nr] & 0x60) != 0x00) {
1194 data->fan_status[nr] -= 0x20;
1195 data->fan_min[nr] <<= 1;
1196 data->fan[nr] <<= 1;
1197 dev_dbg(&client->dev, "Decreasing "
1198 "clock divider to %d for fan %d\n",
1199 FAN_DIV_FROM_REG(data->fan_status[nr]),
1200 nr+1);
1201 }
1202 }
1203
1204 /* Write new fan min if it changed */
1205 if (old_min != data->fan_min[nr]) {
1206 pc87360_write_value(data, LD_FAN, NO_BANK,
1207 PC87360_REG_FAN_MIN(nr),
1208 data->fan_min[nr]);
1209 }
1210}
1211
1212static struct pc87360_data *pc87360_update_device(struct device *dev)
1213{
1214 struct i2c_client *client = to_i2c_client(dev);
1215 struct pc87360_data *data = i2c_get_clientdata(client);
1216 u8 i;
1217
1218 down(&data->update_lock);
1219
1220 if (time_after(jiffies, data->last_updated + HZ * 2) || !data->valid) {
1221 dev_dbg(&client->dev, "Data update\n");
1222
1223 /* Fans */
1224 for (i = 0; i < data->fannr; i++) {
1225 if (FAN_CONFIG_MONITOR(data->fan_conf, i)) {
1226 data->fan_status[i] =
1227 pc87360_read_value(data, LD_FAN,
1228 NO_BANK, PC87360_REG_FAN_STATUS(i));
1229 data->fan[i] = pc87360_read_value(data, LD_FAN,
1230 NO_BANK, PC87360_REG_FAN(i));
1231 data->fan_min[i] = pc87360_read_value(data,
1232 LD_FAN, NO_BANK,
1233 PC87360_REG_FAN_MIN(i));
1234 /* Change clock divider if needed */
1235 pc87360_autodiv(client, i);
1236 /* Clear bits and write new divider */
1237 pc87360_write_value(data, LD_FAN, NO_BANK,
1238 PC87360_REG_FAN_STATUS(i),
1239 data->fan_status[i]);
1240 }
1241 if (FAN_CONFIG_CONTROL(data->fan_conf, i))
1242 data->pwm[i] = pc87360_read_value(data, LD_FAN,
1243 NO_BANK, PC87360_REG_PWM(i));
1244 }
1245
1246 /* Voltages */
1247 for (i = 0; i < data->innr; i++) {
1248 data->in_status[i] = pc87360_read_value(data, LD_IN, i,
1249 PC87365_REG_IN_STATUS);
1250 /* Clear bits */
1251 pc87360_write_value(data, LD_IN, i,
1252 PC87365_REG_IN_STATUS,
1253 data->in_status[i]);
1254 if ((data->in_status[i] & 0x81) == 0x81) {
1255 data->in[i] = pc87360_read_value(data, LD_IN,
1256 i, PC87365_REG_IN);
1257 }
1258 if (data->in_status[i] & 0x01) {
1259 data->in_min[i] = pc87360_read_value(data,
1260 LD_IN, i,
1261 PC87365_REG_IN_MIN);
1262 data->in_max[i] = pc87360_read_value(data,
1263 LD_IN, i,
1264 PC87365_REG_IN_MAX);
1265 if (i >= 11)
1266 data->in_crit[i-11] =
1267 pc87360_read_value(data, LD_IN,
1268 i, PC87365_REG_TEMP_CRIT);
1269 }
1270 }
1271 if (data->innr) {
1272 data->in_alarms = pc87360_read_value(data, LD_IN,
1273 NO_BANK, PC87365_REG_IN_ALARMS1)
1274 | ((pc87360_read_value(data, LD_IN,
1275 NO_BANK, PC87365_REG_IN_ALARMS2)
1276 & 0x07) << 8);
1277 data->vid = (data->vid_conf & 0xE0) ?
1278 pc87360_read_value(data, LD_IN,
1279 NO_BANK, PC87365_REG_VID) : 0x1F;
1280 }
1281
1282 /* Temperatures */
1283 for (i = 0; i < data->tempnr; i++) {
1284 data->temp_status[i] = pc87360_read_value(data,
1285 LD_TEMP, i,
1286 PC87365_REG_TEMP_STATUS);
1287 /* Clear bits */
1288 pc87360_write_value(data, LD_TEMP, i,
1289 PC87365_REG_TEMP_STATUS,
1290 data->temp_status[i]);
1291 if ((data->temp_status[i] & 0x81) == 0x81) {
1292 data->temp[i] = pc87360_read_value(data,
1293 LD_TEMP, i,
1294 PC87365_REG_TEMP);
1295 }
1296 if (data->temp_status[i] & 0x01) {
1297 data->temp_min[i] = pc87360_read_value(data,
1298 LD_TEMP, i,
1299 PC87365_REG_TEMP_MIN);
1300 data->temp_max[i] = pc87360_read_value(data,
1301 LD_TEMP, i,
1302 PC87365_REG_TEMP_MAX);
1303 data->temp_crit[i] = pc87360_read_value(data,
1304 LD_TEMP, i,
1305 PC87365_REG_TEMP_CRIT);
1306 }
1307 }
1308 if (data->tempnr) {
1309 data->temp_alarms = pc87360_read_value(data, LD_TEMP,
1310 NO_BANK, PC87365_REG_TEMP_ALARMS)
1311 & 0x3F;
1312 }
1313
1314 data->last_updated = jiffies;
1315 data->valid = 1;
1316 }
1317
1318 up(&data->update_lock);
1319
1320 return data;
1321}
1322
1323static int __init pc87360_init(void)
1324{
1325 int i;
1326
1327 if (pc87360_find(0x2e, &devid, extra_isa)
1328 && pc87360_find(0x4e, &devid, extra_isa)) {
1329 printk(KERN_WARNING "pc87360: PC8736x not detected, "
1330 "module not inserted.\n");
1331 return -ENODEV;
1332 }
1333
1334 /* Arbitrarily pick one of the addresses */
1335 for (i = 0; i < 3; i++) {
1336 if (extra_isa[i] != 0x0000) {
2d8672c5 1337 address = extra_isa[i];
1da177e4
LT		 1338 break;
1339 }
1340 }
1341
2d8672c5 1342 if (address == 0x0000) {
1da177e4
LT		 1343 printk(KERN_WARNING "pc87360: No active logical device, "
1344 "module not inserted.\n");
1345 return -ENODEV;
1346 }
1347
fde09509 1348 return i2c_isa_add_driver(&pc87360_driver);
1da177e4
LT		 1349}
1350
1351static void __exit pc87360_exit(void)
1352{
fde09509 1353 i2c_isa_del_driver(&pc87360_driver);
1da177e4
LT		 1354}
1355
1356
1357MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>");
1358MODULE_DESCRIPTION("PC8736x hardware monitor");
1359MODULE_LICENSE("GPL");
1360
1361module_init(pc87360_init);
1362module_exit(pc87360_exit);
Linux 6.x block layer and io_uring tree(s)