2 * fscher.c - Part of lm_sensors, Linux kernel modules for hardware
4 * Copyright (C) 2003, 2004 Reinhard Nissl <rnissl@gmx.de>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 * fujitsu siemens hermes chip,
23 * module based on fscpos.c
24 * Copyright (C) 2000 Hermann Jung <hej@odn.de>
25 * Copyright (C) 1998, 1999 Frodo Looijaard <frodol@dds.nl>
26 * and Philip Edelbrock <phil@netroedge.com>
29 #include <linux/module.h>
30 #include <linux/init.h>
31 #include <linux/slab.h>
32 #include <linux/jiffies.h>
33 #include <linux/i2c.h>
34 #include <linux/hwmon.h>
35 #include <linux/err.h>
41 static unsigned short normal_i2c
[] = { 0x73, I2C_CLIENT_END
};
47 I2C_CLIENT_INSMOD_1(fscher
);
50 * The FSCHER registers
53 /* chip identification */
54 #define FSCHER_REG_IDENT_0 0x00
55 #define FSCHER_REG_IDENT_1 0x01
56 #define FSCHER_REG_IDENT_2 0x02
57 #define FSCHER_REG_REVISION 0x03
59 /* global control and status */
60 #define FSCHER_REG_EVENT_STATE 0x04
61 #define FSCHER_REG_CONTROL 0x05
64 #define FSCHER_REG_WDOG_PRESET 0x28
65 #define FSCHER_REG_WDOG_STATE 0x23
66 #define FSCHER_REG_WDOG_CONTROL 0x21
69 #define FSCHER_REG_FAN0_MIN 0x55
70 #define FSCHER_REG_FAN0_ACT 0x0e
71 #define FSCHER_REG_FAN0_STATE 0x0d
72 #define FSCHER_REG_FAN0_RIPPLE 0x0f
75 #define FSCHER_REG_FAN1_MIN 0x65
76 #define FSCHER_REG_FAN1_ACT 0x6b
77 #define FSCHER_REG_FAN1_STATE 0x62
78 #define FSCHER_REG_FAN1_RIPPLE 0x6f
81 #define FSCHER_REG_FAN2_MIN 0xb5
82 #define FSCHER_REG_FAN2_ACT 0xbb
83 #define FSCHER_REG_FAN2_STATE 0xb2
84 #define FSCHER_REG_FAN2_RIPPLE 0xbf
86 /* voltage supervision */
87 #define FSCHER_REG_VOLT_12 0x45
88 #define FSCHER_REG_VOLT_5 0x42
89 #define FSCHER_REG_VOLT_BATT 0x48
92 #define FSCHER_REG_TEMP0_ACT 0x64
93 #define FSCHER_REG_TEMP0_STATE 0x71
96 #define FSCHER_REG_TEMP1_ACT 0x32
97 #define FSCHER_REG_TEMP1_STATE 0x81
100 #define FSCHER_REG_TEMP2_ACT 0x35
101 #define FSCHER_REG_TEMP2_STATE 0x91
104 * Functions declaration
107 static int fscher_attach_adapter(struct i2c_adapter
*adapter
);
108 static int fscher_detect(struct i2c_adapter
*adapter
, int address
, int kind
);
109 static int fscher_detach_client(struct i2c_client
*client
);
110 static struct fscher_data
*fscher_update_device(struct device
*dev
);
111 static void fscher_init_client(struct i2c_client
*client
);
113 static int fscher_read_value(struct i2c_client
*client
, u8 reg
);
114 static int fscher_write_value(struct i2c_client
*client
, u8 reg
, u8 value
);
117 * Driver data (common to all clients)
120 static struct i2c_driver fscher_driver
= {
121 .owner
= THIS_MODULE
,
123 .id
= I2C_DRIVERID_FSCHER
,
124 .flags
= I2C_DF_NOTIFY
,
125 .attach_adapter
= fscher_attach_adapter
,
126 .detach_client
= fscher_detach_client
,
130 * Client data (each client gets its own)
134 struct i2c_client client
;
135 struct class_device
*class_dev
;
136 struct semaphore update_lock
;
137 char valid
; /* zero until following fields are valid */
138 unsigned long last_updated
; /* in jiffies */
140 /* register values */
141 u8 revision
; /* revision of chip */
142 u8 global_event
; /* global event status */
143 u8 global_control
; /* global control register */
144 u8 watchdog
[3]; /* watchdog */
145 u8 volt
[3]; /* 12, 5, battery voltage */
146 u8 temp_act
[3]; /* temperature */
147 u8 temp_status
[3]; /* status of sensor */
148 u8 fan_act
[3]; /* fans revolutions per second */
149 u8 fan_status
[3]; /* fan status */
150 u8 fan_min
[3]; /* fan min value for rps */
151 u8 fan_ripple
[3]; /* divider for rps */
158 #define sysfs_r(kind, sub, offset, reg) \
159 static ssize_t show_##kind##sub (struct fscher_data *, char *, int); \
160 static ssize_t show_##kind##offset##sub (struct device *, struct device_attribute *attr, char *); \
161 static ssize_t show_##kind##offset##sub (struct device *dev, struct device_attribute *attr, char *buf) \
163 struct fscher_data *data = fscher_update_device(dev); \
164 return show_##kind##sub(data, buf, (offset)); \
167 #define sysfs_w(kind, sub, offset, reg) \
168 static ssize_t set_##kind##sub (struct i2c_client *, struct fscher_data *, const char *, size_t, int, int); \
169 static ssize_t set_##kind##offset##sub (struct device *, struct device_attribute *attr, const char *, size_t); \
170 static ssize_t set_##kind##offset##sub (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) \
172 struct i2c_client *client = to_i2c_client(dev); \
173 struct fscher_data *data = i2c_get_clientdata(client); \
174 return set_##kind##sub(client, data, buf, count, (offset), reg); \
177 #define sysfs_rw_n(kind, sub, offset, reg) \
178 sysfs_r(kind, sub, offset, reg) \
179 sysfs_w(kind, sub, offset, reg) \
180 static DEVICE_ATTR(kind##offset##sub, S_IRUGO | S_IWUSR, show_##kind##offset##sub, set_##kind##offset##sub);
182 #define sysfs_rw(kind, sub, reg) \
183 sysfs_r(kind, sub, 0, reg) \
184 sysfs_w(kind, sub, 0, reg) \
185 static DEVICE_ATTR(kind##sub, S_IRUGO | S_IWUSR, show_##kind##0##sub, set_##kind##0##sub);
187 #define sysfs_ro_n(kind, sub, offset, reg) \
188 sysfs_r(kind, sub, offset, reg) \
189 static DEVICE_ATTR(kind##offset##sub, S_IRUGO, show_##kind##offset##sub, NULL);
191 #define sysfs_ro(kind, sub, reg) \
192 sysfs_r(kind, sub, 0, reg) \
193 static DEVICE_ATTR(kind, S_IRUGO, show_##kind##0##sub, NULL);
195 #define sysfs_fan(offset, reg_status, reg_min, reg_ripple, reg_act) \
196 sysfs_rw_n(pwm, , offset, reg_min) \
197 sysfs_rw_n(fan, _status, offset, reg_status) \
198 sysfs_rw_n(fan, _div , offset, reg_ripple) \
199 sysfs_ro_n(fan, _input , offset, reg_act)
201 #define sysfs_temp(offset, reg_status, reg_act) \
202 sysfs_rw_n(temp, _status, offset, reg_status) \
203 sysfs_ro_n(temp, _input , offset, reg_act)
205 #define sysfs_in(offset, reg_act) \
206 sysfs_ro_n(in, _input, offset, reg_act)
208 #define sysfs_revision(reg_revision) \
209 sysfs_ro(revision, , reg_revision)
211 #define sysfs_alarms(reg_events) \
212 sysfs_ro(alarms, , reg_events)
214 #define sysfs_control(reg_control) \
215 sysfs_rw(control, , reg_control)
217 #define sysfs_watchdog(reg_control, reg_status, reg_preset) \
218 sysfs_rw(watchdog, _control, reg_control) \
219 sysfs_rw(watchdog, _status , reg_status) \
220 sysfs_rw(watchdog, _preset , reg_preset)
222 sysfs_fan(1, FSCHER_REG_FAN0_STATE
, FSCHER_REG_FAN0_MIN
,
223 FSCHER_REG_FAN0_RIPPLE
, FSCHER_REG_FAN0_ACT
)
224 sysfs_fan(2, FSCHER_REG_FAN1_STATE
, FSCHER_REG_FAN1_MIN
,
225 FSCHER_REG_FAN1_RIPPLE
, FSCHER_REG_FAN1_ACT
)
226 sysfs_fan(3, FSCHER_REG_FAN2_STATE
, FSCHER_REG_FAN2_MIN
,
227 FSCHER_REG_FAN2_RIPPLE
, FSCHER_REG_FAN2_ACT
)
229 sysfs_temp(1, FSCHER_REG_TEMP0_STATE
, FSCHER_REG_TEMP0_ACT
)
230 sysfs_temp(2, FSCHER_REG_TEMP1_STATE
, FSCHER_REG_TEMP1_ACT
)
231 sysfs_temp(3, FSCHER_REG_TEMP2_STATE
, FSCHER_REG_TEMP2_ACT
)
233 sysfs_in(0, FSCHER_REG_VOLT_12
)
234 sysfs_in(1, FSCHER_REG_VOLT_5
)
235 sysfs_in(2, FSCHER_REG_VOLT_BATT
)
237 sysfs_revision(FSCHER_REG_REVISION
)
238 sysfs_alarms(FSCHER_REG_EVENTS
)
239 sysfs_control(FSCHER_REG_CONTROL
)
240 sysfs_watchdog(FSCHER_REG_WDOG_CONTROL
, FSCHER_REG_WDOG_STATE
, FSCHER_REG_WDOG_PRESET
)
242 #define device_create_file_fan(client, offset) \
244 device_create_file(&client->dev, &dev_attr_fan##offset##_status); \
245 device_create_file(&client->dev, &dev_attr_pwm##offset); \
246 device_create_file(&client->dev, &dev_attr_fan##offset##_div); \
247 device_create_file(&client->dev, &dev_attr_fan##offset##_input); \
250 #define device_create_file_temp(client, offset) \
252 device_create_file(&client->dev, &dev_attr_temp##offset##_status); \
253 device_create_file(&client->dev, &dev_attr_temp##offset##_input); \
256 #define device_create_file_in(client, offset) \
258 device_create_file(&client->dev, &dev_attr_in##offset##_input); \
261 #define device_create_file_revision(client) \
263 device_create_file(&client->dev, &dev_attr_revision); \
266 #define device_create_file_alarms(client) \
268 device_create_file(&client->dev, &dev_attr_alarms); \
271 #define device_create_file_control(client) \
273 device_create_file(&client->dev, &dev_attr_control); \
276 #define device_create_file_watchdog(client) \
278 device_create_file(&client->dev, &dev_attr_watchdog_status); \
279 device_create_file(&client->dev, &dev_attr_watchdog_control); \
280 device_create_file(&client->dev, &dev_attr_watchdog_preset); \
287 static int fscher_attach_adapter(struct i2c_adapter
*adapter
)
289 if (!(adapter
->class & I2C_CLASS_HWMON
))
291 return i2c_probe(adapter
, &addr_data
, fscher_detect
);
294 static int fscher_detect(struct i2c_adapter
*adapter
, int address
, int kind
)
296 struct i2c_client
*new_client
;
297 struct fscher_data
*data
;
300 if (!i2c_check_functionality(adapter
, I2C_FUNC_SMBUS_BYTE_DATA
))
303 /* OK. For now, we presume we have a valid client. We now create the
304 * client structure, even though we cannot fill it completely yet.
305 * But it allows us to access i2c_smbus_read_byte_data. */
306 if (!(data
= kmalloc(sizeof(struct fscher_data
), GFP_KERNEL
))) {
310 memset(data
, 0, sizeof(struct fscher_data
));
312 /* The common I2C client data is placed right before the
313 * Hermes-specific data. */
314 new_client
= &data
->client
;
315 i2c_set_clientdata(new_client
, data
);
316 new_client
->addr
= address
;
317 new_client
->adapter
= adapter
;
318 new_client
->driver
= &fscher_driver
;
319 new_client
->flags
= 0;
321 /* Do the remaining detection unless force or force_fscher parameter */
323 if ((i2c_smbus_read_byte_data(new_client
,
324 FSCHER_REG_IDENT_0
) != 0x48) /* 'H' */
325 || (i2c_smbus_read_byte_data(new_client
,
326 FSCHER_REG_IDENT_1
) != 0x45) /* 'E' */
327 || (i2c_smbus_read_byte_data(new_client
,
328 FSCHER_REG_IDENT_2
) != 0x52)) /* 'R' */
332 /* Fill in the remaining client fields and put it into the
334 strlcpy(new_client
->name
, "fscher", I2C_NAME_SIZE
);
336 init_MUTEX(&data
->update_lock
);
338 /* Tell the I2C layer a new client has arrived */
339 if ((err
= i2c_attach_client(new_client
)))
342 fscher_init_client(new_client
);
344 /* Register sysfs hooks */
345 data
->class_dev
= hwmon_device_register(&new_client
->dev
);
346 if (IS_ERR(data
->class_dev
)) {
347 err
= PTR_ERR(data
->class_dev
);
351 device_create_file_revision(new_client
);
352 device_create_file_alarms(new_client
);
353 device_create_file_control(new_client
);
354 device_create_file_watchdog(new_client
);
356 device_create_file_in(new_client
, 0);
357 device_create_file_in(new_client
, 1);
358 device_create_file_in(new_client
, 2);
360 device_create_file_fan(new_client
, 1);
361 device_create_file_fan(new_client
, 2);
362 device_create_file_fan(new_client
, 3);
364 device_create_file_temp(new_client
, 1);
365 device_create_file_temp(new_client
, 2);
366 device_create_file_temp(new_client
, 3);
371 i2c_detach_client(new_client
);
378 static int fscher_detach_client(struct i2c_client
*client
)
380 struct fscher_data
*data
= i2c_get_clientdata(client
);
383 hwmon_device_unregister(data
->class_dev
);
385 if ((err
= i2c_detach_client(client
)))
392 static int fscher_read_value(struct i2c_client
*client
, u8 reg
)
394 dev_dbg(&client
->dev
, "read reg 0x%02x\n", reg
);
396 return i2c_smbus_read_byte_data(client
, reg
);
399 static int fscher_write_value(struct i2c_client
*client
, u8 reg
, u8 value
)
401 dev_dbg(&client
->dev
, "write reg 0x%02x, val 0x%02x\n",
404 return i2c_smbus_write_byte_data(client
, reg
, value
);
407 /* Called when we have found a new FSC Hermes. */
408 static void fscher_init_client(struct i2c_client
*client
)
410 struct fscher_data
*data
= i2c_get_clientdata(client
);
412 /* Read revision from chip */
413 data
->revision
= fscher_read_value(client
, FSCHER_REG_REVISION
);
416 static struct fscher_data
*fscher_update_device(struct device
*dev
)
418 struct i2c_client
*client
= to_i2c_client(dev
);
419 struct fscher_data
*data
= i2c_get_clientdata(client
);
421 down(&data
->update_lock
);
423 if (time_after(jiffies
, data
->last_updated
+ 2 * HZ
) || !data
->valid
) {
425 dev_dbg(&client
->dev
, "Starting fscher update\n");
427 data
->temp_act
[0] = fscher_read_value(client
, FSCHER_REG_TEMP0_ACT
);
428 data
->temp_act
[1] = fscher_read_value(client
, FSCHER_REG_TEMP1_ACT
);
429 data
->temp_act
[2] = fscher_read_value(client
, FSCHER_REG_TEMP2_ACT
);
430 data
->temp_status
[0] = fscher_read_value(client
, FSCHER_REG_TEMP0_STATE
);
431 data
->temp_status
[1] = fscher_read_value(client
, FSCHER_REG_TEMP1_STATE
);
432 data
->temp_status
[2] = fscher_read_value(client
, FSCHER_REG_TEMP2_STATE
);
434 data
->volt
[0] = fscher_read_value(client
, FSCHER_REG_VOLT_12
);
435 data
->volt
[1] = fscher_read_value(client
, FSCHER_REG_VOLT_5
);
436 data
->volt
[2] = fscher_read_value(client
, FSCHER_REG_VOLT_BATT
);
438 data
->fan_act
[0] = fscher_read_value(client
, FSCHER_REG_FAN0_ACT
);
439 data
->fan_act
[1] = fscher_read_value(client
, FSCHER_REG_FAN1_ACT
);
440 data
->fan_act
[2] = fscher_read_value(client
, FSCHER_REG_FAN2_ACT
);
441 data
->fan_status
[0] = fscher_read_value(client
, FSCHER_REG_FAN0_STATE
);
442 data
->fan_status
[1] = fscher_read_value(client
, FSCHER_REG_FAN1_STATE
);
443 data
->fan_status
[2] = fscher_read_value(client
, FSCHER_REG_FAN2_STATE
);
444 data
->fan_min
[0] = fscher_read_value(client
, FSCHER_REG_FAN0_MIN
);
445 data
->fan_min
[1] = fscher_read_value(client
, FSCHER_REG_FAN1_MIN
);
446 data
->fan_min
[2] = fscher_read_value(client
, FSCHER_REG_FAN2_MIN
);
447 data
->fan_ripple
[0] = fscher_read_value(client
, FSCHER_REG_FAN0_RIPPLE
);
448 data
->fan_ripple
[1] = fscher_read_value(client
, FSCHER_REG_FAN1_RIPPLE
);
449 data
->fan_ripple
[2] = fscher_read_value(client
, FSCHER_REG_FAN2_RIPPLE
);
451 data
->watchdog
[0] = fscher_read_value(client
, FSCHER_REG_WDOG_PRESET
);
452 data
->watchdog
[1] = fscher_read_value(client
, FSCHER_REG_WDOG_STATE
);
453 data
->watchdog
[2] = fscher_read_value(client
, FSCHER_REG_WDOG_CONTROL
);
455 data
->global_event
= fscher_read_value(client
, FSCHER_REG_EVENT_STATE
);
457 data
->last_updated
= jiffies
;
461 up(&data
->update_lock
);
468 #define FAN_INDEX_FROM_NUM(nr) ((nr) - 1)
470 static ssize_t
set_fan_status(struct i2c_client
*client
, struct fscher_data
*data
,
471 const char *buf
, size_t count
, int nr
, int reg
)
473 /* bits 0..1, 3..7 reserved => mask with 0x04 */
474 unsigned long v
= simple_strtoul(buf
, NULL
, 10) & 0x04;
476 down(&data
->update_lock
);
477 data
->fan_status
[FAN_INDEX_FROM_NUM(nr
)] &= ~v
;
478 fscher_write_value(client
, reg
, v
);
479 up(&data
->update_lock
);
483 static ssize_t
show_fan_status(struct fscher_data
*data
, char *buf
, int nr
)
485 /* bits 0..1, 3..7 reserved => mask with 0x04 */
486 return sprintf(buf
, "%u\n", data
->fan_status
[FAN_INDEX_FROM_NUM(nr
)] & 0x04);
489 static ssize_t
set_pwm(struct i2c_client
*client
, struct fscher_data
*data
,
490 const char *buf
, size_t count
, int nr
, int reg
)
492 unsigned long v
= simple_strtoul(buf
, NULL
, 10);
494 down(&data
->update_lock
);
495 data
->fan_min
[FAN_INDEX_FROM_NUM(nr
)] = v
> 0xff ? 0xff : v
;
496 fscher_write_value(client
, reg
, data
->fan_min
[FAN_INDEX_FROM_NUM(nr
)]);
497 up(&data
->update_lock
);
501 static ssize_t
show_pwm(struct fscher_data
*data
, char *buf
, int nr
)
503 return sprintf(buf
, "%u\n", data
->fan_min
[FAN_INDEX_FROM_NUM(nr
)]);
506 static ssize_t
set_fan_div(struct i2c_client
*client
, struct fscher_data
*data
,
507 const char *buf
, size_t count
, int nr
, int reg
)
509 /* supported values: 2, 4, 8 */
510 unsigned long v
= simple_strtoul(buf
, NULL
, 10);
513 case 2: v
= 1; break;
514 case 4: v
= 2; break;
515 case 8: v
= 3; break;
517 dev_err(&client
->dev
, "fan_div value %ld not "
518 "supported. Choose one of 2, 4 or 8!\n", v
);
522 down(&data
->update_lock
);
524 /* bits 2..7 reserved => mask with 0x03 */
525 data
->fan_ripple
[FAN_INDEX_FROM_NUM(nr
)] &= ~0x03;
526 data
->fan_ripple
[FAN_INDEX_FROM_NUM(nr
)] |= v
;
528 fscher_write_value(client
, reg
, data
->fan_ripple
[FAN_INDEX_FROM_NUM(nr
)]);
529 up(&data
->update_lock
);
533 static ssize_t
show_fan_div(struct fscher_data
*data
, char *buf
, int nr
)
535 /* bits 2..7 reserved => mask with 0x03 */
536 return sprintf(buf
, "%u\n", 1 << (data
->fan_ripple
[FAN_INDEX_FROM_NUM(nr
)] & 0x03));
539 #define RPM_FROM_REG(val) (val*60)
541 static ssize_t
show_fan_input (struct fscher_data
*data
, char *buf
, int nr
)
543 return sprintf(buf
, "%u\n", RPM_FROM_REG(data
->fan_act
[FAN_INDEX_FROM_NUM(nr
)]));
548 #define TEMP_INDEX_FROM_NUM(nr) ((nr) - 1)
550 static ssize_t
set_temp_status(struct i2c_client
*client
, struct fscher_data
*data
,
551 const char *buf
, size_t count
, int nr
, int reg
)
553 /* bits 2..7 reserved, 0 read only => mask with 0x02 */
554 unsigned long v
= simple_strtoul(buf
, NULL
, 10) & 0x02;
556 down(&data
->update_lock
);
557 data
->temp_status
[TEMP_INDEX_FROM_NUM(nr
)] &= ~v
;
558 fscher_write_value(client
, reg
, v
);
559 up(&data
->update_lock
);
563 static ssize_t
show_temp_status(struct fscher_data
*data
, char *buf
, int nr
)
565 /* bits 2..7 reserved => mask with 0x03 */
566 return sprintf(buf
, "%u\n", data
->temp_status
[TEMP_INDEX_FROM_NUM(nr
)] & 0x03);
569 #define TEMP_FROM_REG(val) (((val) - 128) * 1000)
571 static ssize_t
show_temp_input(struct fscher_data
*data
, char *buf
, int nr
)
573 return sprintf(buf
, "%d\n", TEMP_FROM_REG(data
->temp_act
[TEMP_INDEX_FROM_NUM(nr
)]));
577 * The final conversion is specified in sensors.conf, as it depends on
578 * mainboard specific values. We export the registers contents as
579 * pseudo-hundredths-of-Volts (range 0V - 2.55V). Not that it makes much
580 * sense per se, but it minimizes the conversions count and keeps the
581 * values within a usual range.
583 #define VOLT_FROM_REG(val) ((val) * 10)
585 static ssize_t
show_in_input(struct fscher_data
*data
, char *buf
, int nr
)
587 return sprintf(buf
, "%u\n", VOLT_FROM_REG(data
->volt
[nr
]));
592 static ssize_t
show_revision(struct fscher_data
*data
, char *buf
, int nr
)
594 return sprintf(buf
, "%u\n", data
->revision
);
599 static ssize_t
show_alarms(struct fscher_data
*data
, char *buf
, int nr
)
601 /* bits 2, 5..6 reserved => mask with 0x9b */
602 return sprintf(buf
, "%u\n", data
->global_event
& 0x9b);
607 static ssize_t
set_control(struct i2c_client
*client
, struct fscher_data
*data
,
608 const char *buf
, size_t count
, int nr
, int reg
)
610 /* bits 1..7 reserved => mask with 0x01 */
611 unsigned long v
= simple_strtoul(buf
, NULL
, 10) & 0x01;
613 down(&data
->update_lock
);
614 data
->global_control
&= ~v
;
615 fscher_write_value(client
, reg
, v
);
616 up(&data
->update_lock
);
620 static ssize_t
show_control(struct fscher_data
*data
, char *buf
, int nr
)
622 /* bits 1..7 reserved => mask with 0x01 */
623 return sprintf(buf
, "%u\n", data
->global_control
& 0x01);
628 static ssize_t
set_watchdog_control(struct i2c_client
*client
, struct
629 fscher_data
*data
, const char *buf
, size_t count
,
632 /* bits 0..3 reserved => mask with 0xf0 */
633 unsigned long v
= simple_strtoul(buf
, NULL
, 10) & 0xf0;
635 down(&data
->update_lock
);
636 data
->watchdog
[2] &= ~0xf0;
637 data
->watchdog
[2] |= v
;
638 fscher_write_value(client
, reg
, data
->watchdog
[2]);
639 up(&data
->update_lock
);
643 static ssize_t
show_watchdog_control(struct fscher_data
*data
, char *buf
, int nr
)
645 /* bits 0..3 reserved, bit 5 write only => mask with 0xd0 */
646 return sprintf(buf
, "%u\n", data
->watchdog
[2] & 0xd0);
649 static ssize_t
set_watchdog_status(struct i2c_client
*client
, struct fscher_data
*data
,
650 const char *buf
, size_t count
, int nr
, int reg
)
652 /* bits 0, 2..7 reserved => mask with 0x02 */
653 unsigned long v
= simple_strtoul(buf
, NULL
, 10) & 0x02;
655 down(&data
->update_lock
);
656 data
->watchdog
[1] &= ~v
;
657 fscher_write_value(client
, reg
, v
);
658 up(&data
->update_lock
);
662 static ssize_t
show_watchdog_status(struct fscher_data
*data
, char *buf
, int nr
)
664 /* bits 0, 2..7 reserved => mask with 0x02 */
665 return sprintf(buf
, "%u\n", data
->watchdog
[1] & 0x02);
668 static ssize_t
set_watchdog_preset(struct i2c_client
*client
, struct fscher_data
*data
,
669 const char *buf
, size_t count
, int nr
, int reg
)
671 unsigned long v
= simple_strtoul(buf
, NULL
, 10) & 0xff;
673 down(&data
->update_lock
);
674 data
->watchdog
[0] = v
;
675 fscher_write_value(client
, reg
, data
->watchdog
[0]);
676 up(&data
->update_lock
);
680 static ssize_t
show_watchdog_preset(struct fscher_data
*data
, char *buf
, int nr
)
682 return sprintf(buf
, "%u\n", data
->watchdog
[0]);
685 static int __init
sensors_fscher_init(void)
687 return i2c_add_driver(&fscher_driver
);
690 static void __exit
sensors_fscher_exit(void)
692 i2c_del_driver(&fscher_driver
);
695 MODULE_AUTHOR("Reinhard Nissl <rnissl@gmx.de>");
696 MODULE_DESCRIPTION("FSC Hermes driver");
697 MODULE_LICENSE("GPL");
699 module_init(sensors_fscher_init
);
700 module_exit(sensors_fscher_exit
);
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