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/i2c-sensor.h>
35 #include <linux/hwmon.h>
36 #include <linux/err.h>
42 static unsigned short normal_i2c
[] = { 0x73, I2C_CLIENT_END
};
43 static unsigned int normal_isa
[] = { I2C_CLIENT_ISA_END
};
49 SENSORS_INSMOD_1(fscher
);
52 * The FSCHER registers
55 /* chip identification */
56 #define FSCHER_REG_IDENT_0 0x00
57 #define FSCHER_REG_IDENT_1 0x01
58 #define FSCHER_REG_IDENT_2 0x02
59 #define FSCHER_REG_REVISION 0x03
61 /* global control and status */
62 #define FSCHER_REG_EVENT_STATE 0x04
63 #define FSCHER_REG_CONTROL 0x05
66 #define FSCHER_REG_WDOG_PRESET 0x28
67 #define FSCHER_REG_WDOG_STATE 0x23
68 #define FSCHER_REG_WDOG_CONTROL 0x21
71 #define FSCHER_REG_FAN0_MIN 0x55
72 #define FSCHER_REG_FAN0_ACT 0x0e
73 #define FSCHER_REG_FAN0_STATE 0x0d
74 #define FSCHER_REG_FAN0_RIPPLE 0x0f
77 #define FSCHER_REG_FAN1_MIN 0x65
78 #define FSCHER_REG_FAN1_ACT 0x6b
79 #define FSCHER_REG_FAN1_STATE 0x62
80 #define FSCHER_REG_FAN1_RIPPLE 0x6f
83 #define FSCHER_REG_FAN2_MIN 0xb5
84 #define FSCHER_REG_FAN2_ACT 0xbb
85 #define FSCHER_REG_FAN2_STATE 0xb2
86 #define FSCHER_REG_FAN2_RIPPLE 0xbf
88 /* voltage supervision */
89 #define FSCHER_REG_VOLT_12 0x45
90 #define FSCHER_REG_VOLT_5 0x42
91 #define FSCHER_REG_VOLT_BATT 0x48
94 #define FSCHER_REG_TEMP0_ACT 0x64
95 #define FSCHER_REG_TEMP0_STATE 0x71
98 #define FSCHER_REG_TEMP1_ACT 0x32
99 #define FSCHER_REG_TEMP1_STATE 0x81
102 #define FSCHER_REG_TEMP2_ACT 0x35
103 #define FSCHER_REG_TEMP2_STATE 0x91
106 * Functions declaration
109 static int fscher_attach_adapter(struct i2c_adapter
*adapter
);
110 static int fscher_detect(struct i2c_adapter
*adapter
, int address
, int kind
);
111 static int fscher_detach_client(struct i2c_client
*client
);
112 static struct fscher_data
*fscher_update_device(struct device
*dev
);
113 static void fscher_init_client(struct i2c_client
*client
);
115 static int fscher_read_value(struct i2c_client
*client
, u8 reg
);
116 static int fscher_write_value(struct i2c_client
*client
, u8 reg
, u8 value
);
119 * Driver data (common to all clients)
122 static struct i2c_driver fscher_driver
= {
123 .owner
= THIS_MODULE
,
125 .id
= I2C_DRIVERID_FSCHER
,
126 .flags
= I2C_DF_NOTIFY
,
127 .attach_adapter
= fscher_attach_adapter
,
128 .detach_client
= fscher_detach_client
,
132 * Client data (each client gets its own)
136 struct i2c_client client
;
137 struct class_device
*class_dev
;
138 struct semaphore update_lock
;
139 char valid
; /* zero until following fields are valid */
140 unsigned long last_updated
; /* in jiffies */
142 /* register values */
143 u8 revision
; /* revision of chip */
144 u8 global_event
; /* global event status */
145 u8 global_control
; /* global control register */
146 u8 watchdog
[3]; /* watchdog */
147 u8 volt
[3]; /* 12, 5, battery voltage */
148 u8 temp_act
[3]; /* temperature */
149 u8 temp_status
[3]; /* status of sensor */
150 u8 fan_act
[3]; /* fans revolutions per second */
151 u8 fan_status
[3]; /* fan status */
152 u8 fan_min
[3]; /* fan min value for rps */
153 u8 fan_ripple
[3]; /* divider for rps */
160 #define sysfs_r(kind, sub, offset, reg) \
161 static ssize_t show_##kind##sub (struct fscher_data *, char *, int); \
162 static ssize_t show_##kind##offset##sub (struct device *, struct device_attribute *attr, char *); \
163 static ssize_t show_##kind##offset##sub (struct device *dev, struct device_attribute *attr, char *buf) \
165 struct fscher_data *data = fscher_update_device(dev); \
166 return show_##kind##sub(data, buf, (offset)); \
169 #define sysfs_w(kind, sub, offset, reg) \
170 static ssize_t set_##kind##sub (struct i2c_client *, struct fscher_data *, const char *, size_t, int, int); \
171 static ssize_t set_##kind##offset##sub (struct device *, struct device_attribute *attr, const char *, size_t); \
172 static ssize_t set_##kind##offset##sub (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) \
174 struct i2c_client *client = to_i2c_client(dev); \
175 struct fscher_data *data = i2c_get_clientdata(client); \
176 return set_##kind##sub(client, data, buf, count, (offset), reg); \
179 #define sysfs_rw_n(kind, sub, offset, reg) \
180 sysfs_r(kind, sub, offset, reg) \
181 sysfs_w(kind, sub, offset, reg) \
182 static DEVICE_ATTR(kind##offset##sub, S_IRUGO | S_IWUSR, show_##kind##offset##sub, set_##kind##offset##sub);
184 #define sysfs_rw(kind, sub, reg) \
185 sysfs_r(kind, sub, 0, reg) \
186 sysfs_w(kind, sub, 0, reg) \
187 static DEVICE_ATTR(kind##sub, S_IRUGO | S_IWUSR, show_##kind##0##sub, set_##kind##0##sub);
189 #define sysfs_ro_n(kind, sub, offset, reg) \
190 sysfs_r(kind, sub, offset, reg) \
191 static DEVICE_ATTR(kind##offset##sub, S_IRUGO, show_##kind##offset##sub, NULL);
193 #define sysfs_ro(kind, sub, reg) \
194 sysfs_r(kind, sub, 0, reg) \
195 static DEVICE_ATTR(kind, S_IRUGO, show_##kind##0##sub, NULL);
197 #define sysfs_fan(offset, reg_status, reg_min, reg_ripple, reg_act) \
198 sysfs_rw_n(pwm, , offset, reg_min) \
199 sysfs_rw_n(fan, _status, offset, reg_status) \
200 sysfs_rw_n(fan, _div , offset, reg_ripple) \
201 sysfs_ro_n(fan, _input , offset, reg_act)
203 #define sysfs_temp(offset, reg_status, reg_act) \
204 sysfs_rw_n(temp, _status, offset, reg_status) \
205 sysfs_ro_n(temp, _input , offset, reg_act)
207 #define sysfs_in(offset, reg_act) \
208 sysfs_ro_n(in, _input, offset, reg_act)
210 #define sysfs_revision(reg_revision) \
211 sysfs_ro(revision, , reg_revision)
213 #define sysfs_alarms(reg_events) \
214 sysfs_ro(alarms, , reg_events)
216 #define sysfs_control(reg_control) \
217 sysfs_rw(control, , reg_control)
219 #define sysfs_watchdog(reg_control, reg_status, reg_preset) \
220 sysfs_rw(watchdog, _control, reg_control) \
221 sysfs_rw(watchdog, _status , reg_status) \
222 sysfs_rw(watchdog, _preset , reg_preset)
224 sysfs_fan(1, FSCHER_REG_FAN0_STATE
, FSCHER_REG_FAN0_MIN
,
225 FSCHER_REG_FAN0_RIPPLE
, FSCHER_REG_FAN0_ACT
)
226 sysfs_fan(2, FSCHER_REG_FAN1_STATE
, FSCHER_REG_FAN1_MIN
,
227 FSCHER_REG_FAN1_RIPPLE
, FSCHER_REG_FAN1_ACT
)
228 sysfs_fan(3, FSCHER_REG_FAN2_STATE
, FSCHER_REG_FAN2_MIN
,
229 FSCHER_REG_FAN2_RIPPLE
, FSCHER_REG_FAN2_ACT
)
231 sysfs_temp(1, FSCHER_REG_TEMP0_STATE
, FSCHER_REG_TEMP0_ACT
)
232 sysfs_temp(2, FSCHER_REG_TEMP1_STATE
, FSCHER_REG_TEMP1_ACT
)
233 sysfs_temp(3, FSCHER_REG_TEMP2_STATE
, FSCHER_REG_TEMP2_ACT
)
235 sysfs_in(0, FSCHER_REG_VOLT_12
)
236 sysfs_in(1, FSCHER_REG_VOLT_5
)
237 sysfs_in(2, FSCHER_REG_VOLT_BATT
)
239 sysfs_revision(FSCHER_REG_REVISION
)
240 sysfs_alarms(FSCHER_REG_EVENTS
)
241 sysfs_control(FSCHER_REG_CONTROL
)
242 sysfs_watchdog(FSCHER_REG_WDOG_CONTROL
, FSCHER_REG_WDOG_STATE
, FSCHER_REG_WDOG_PRESET
)
244 #define device_create_file_fan(client, offset) \
246 device_create_file(&client->dev, &dev_attr_fan##offset##_status); \
247 device_create_file(&client->dev, &dev_attr_pwm##offset); \
248 device_create_file(&client->dev, &dev_attr_fan##offset##_div); \
249 device_create_file(&client->dev, &dev_attr_fan##offset##_input); \
252 #define device_create_file_temp(client, offset) \
254 device_create_file(&client->dev, &dev_attr_temp##offset##_status); \
255 device_create_file(&client->dev, &dev_attr_temp##offset##_input); \
258 #define device_create_file_in(client, offset) \
260 device_create_file(&client->dev, &dev_attr_in##offset##_input); \
263 #define device_create_file_revision(client) \
265 device_create_file(&client->dev, &dev_attr_revision); \
268 #define device_create_file_alarms(client) \
270 device_create_file(&client->dev, &dev_attr_alarms); \
273 #define device_create_file_control(client) \
275 device_create_file(&client->dev, &dev_attr_control); \
278 #define device_create_file_watchdog(client) \
280 device_create_file(&client->dev, &dev_attr_watchdog_status); \
281 device_create_file(&client->dev, &dev_attr_watchdog_control); \
282 device_create_file(&client->dev, &dev_attr_watchdog_preset); \
289 static int fscher_attach_adapter(struct i2c_adapter
*adapter
)
291 if (!(adapter
->class & I2C_CLASS_HWMON
))
293 return i2c_detect(adapter
, &addr_data
, fscher_detect
);
296 static int fscher_detect(struct i2c_adapter
*adapter
, int address
, int kind
)
298 struct i2c_client
*new_client
;
299 struct fscher_data
*data
;
302 if (!i2c_check_functionality(adapter
, I2C_FUNC_SMBUS_BYTE_DATA
))
305 /* OK. For now, we presume we have a valid client. We now create the
306 * client structure, even though we cannot fill it completely yet.
307 * But it allows us to access i2c_smbus_read_byte_data. */
308 if (!(data
= kmalloc(sizeof(struct fscher_data
), GFP_KERNEL
))) {
312 memset(data
, 0, sizeof(struct fscher_data
));
314 /* The common I2C client data is placed right before the
315 * Hermes-specific data. */
316 new_client
= &data
->client
;
317 i2c_set_clientdata(new_client
, data
);
318 new_client
->addr
= address
;
319 new_client
->adapter
= adapter
;
320 new_client
->driver
= &fscher_driver
;
321 new_client
->flags
= 0;
323 /* Do the remaining detection unless force or force_fscher parameter */
325 if ((i2c_smbus_read_byte_data(new_client
,
326 FSCHER_REG_IDENT_0
) != 0x48) /* 'H' */
327 || (i2c_smbus_read_byte_data(new_client
,
328 FSCHER_REG_IDENT_1
) != 0x45) /* 'E' */
329 || (i2c_smbus_read_byte_data(new_client
,
330 FSCHER_REG_IDENT_2
) != 0x52)) /* 'R' */
334 /* Fill in the remaining client fields and put it into the
336 strlcpy(new_client
->name
, "fscher", I2C_NAME_SIZE
);
338 init_MUTEX(&data
->update_lock
);
340 /* Tell the I2C layer a new client has arrived */
341 if ((err
= i2c_attach_client(new_client
)))
344 fscher_init_client(new_client
);
346 /* Register sysfs hooks */
347 data
->class_dev
= hwmon_device_register(&new_client
->dev
);
348 if (IS_ERR(data
->class_dev
)) {
349 err
= PTR_ERR(data
->class_dev
);
353 device_create_file_revision(new_client
);
354 device_create_file_alarms(new_client
);
355 device_create_file_control(new_client
);
356 device_create_file_watchdog(new_client
);
358 device_create_file_in(new_client
, 0);
359 device_create_file_in(new_client
, 1);
360 device_create_file_in(new_client
, 2);
362 device_create_file_fan(new_client
, 1);
363 device_create_file_fan(new_client
, 2);
364 device_create_file_fan(new_client
, 3);
366 device_create_file_temp(new_client
, 1);
367 device_create_file_temp(new_client
, 2);
368 device_create_file_temp(new_client
, 3);
373 i2c_detach_client(new_client
);
380 static int fscher_detach_client(struct i2c_client
*client
)
382 struct fscher_data
*data
= i2c_get_clientdata(client
);
385 hwmon_device_unregister(data
->class_dev
);
387 if ((err
= i2c_detach_client(client
))) {
388 dev_err(&client
->dev
, "Client deregistration failed, "
389 "client not detached.\n");
397 static int fscher_read_value(struct i2c_client
*client
, u8 reg
)
399 dev_dbg(&client
->dev
, "read reg 0x%02x\n", reg
);
401 return i2c_smbus_read_byte_data(client
, reg
);
404 static int fscher_write_value(struct i2c_client
*client
, u8 reg
, u8 value
)
406 dev_dbg(&client
->dev
, "write reg 0x%02x, val 0x%02x\n",
409 return i2c_smbus_write_byte_data(client
, reg
, value
);
412 /* Called when we have found a new FSC Hermes. */
413 static void fscher_init_client(struct i2c_client
*client
)
415 struct fscher_data
*data
= i2c_get_clientdata(client
);
417 /* Read revision from chip */
418 data
->revision
= fscher_read_value(client
, FSCHER_REG_REVISION
);
421 static struct fscher_data
*fscher_update_device(struct device
*dev
)
423 struct i2c_client
*client
= to_i2c_client(dev
);
424 struct fscher_data
*data
= i2c_get_clientdata(client
);
426 down(&data
->update_lock
);
428 if (time_after(jiffies
, data
->last_updated
+ 2 * HZ
) || !data
->valid
) {
430 dev_dbg(&client
->dev
, "Starting fscher update\n");
432 data
->temp_act
[0] = fscher_read_value(client
, FSCHER_REG_TEMP0_ACT
);
433 data
->temp_act
[1] = fscher_read_value(client
, FSCHER_REG_TEMP1_ACT
);
434 data
->temp_act
[2] = fscher_read_value(client
, FSCHER_REG_TEMP2_ACT
);
435 data
->temp_status
[0] = fscher_read_value(client
, FSCHER_REG_TEMP0_STATE
);
436 data
->temp_status
[1] = fscher_read_value(client
, FSCHER_REG_TEMP1_STATE
);
437 data
->temp_status
[2] = fscher_read_value(client
, FSCHER_REG_TEMP2_STATE
);
439 data
->volt
[0] = fscher_read_value(client
, FSCHER_REG_VOLT_12
);
440 data
->volt
[1] = fscher_read_value(client
, FSCHER_REG_VOLT_5
);
441 data
->volt
[2] = fscher_read_value(client
, FSCHER_REG_VOLT_BATT
);
443 data
->fan_act
[0] = fscher_read_value(client
, FSCHER_REG_FAN0_ACT
);
444 data
->fan_act
[1] = fscher_read_value(client
, FSCHER_REG_FAN1_ACT
);
445 data
->fan_act
[2] = fscher_read_value(client
, FSCHER_REG_FAN2_ACT
);
446 data
->fan_status
[0] = fscher_read_value(client
, FSCHER_REG_FAN0_STATE
);
447 data
->fan_status
[1] = fscher_read_value(client
, FSCHER_REG_FAN1_STATE
);
448 data
->fan_status
[2] = fscher_read_value(client
, FSCHER_REG_FAN2_STATE
);
449 data
->fan_min
[0] = fscher_read_value(client
, FSCHER_REG_FAN0_MIN
);
450 data
->fan_min
[1] = fscher_read_value(client
, FSCHER_REG_FAN1_MIN
);
451 data
->fan_min
[2] = fscher_read_value(client
, FSCHER_REG_FAN2_MIN
);
452 data
->fan_ripple
[0] = fscher_read_value(client
, FSCHER_REG_FAN0_RIPPLE
);
453 data
->fan_ripple
[1] = fscher_read_value(client
, FSCHER_REG_FAN1_RIPPLE
);
454 data
->fan_ripple
[2] = fscher_read_value(client
, FSCHER_REG_FAN2_RIPPLE
);
456 data
->watchdog
[0] = fscher_read_value(client
, FSCHER_REG_WDOG_PRESET
);
457 data
->watchdog
[1] = fscher_read_value(client
, FSCHER_REG_WDOG_STATE
);
458 data
->watchdog
[2] = fscher_read_value(client
, FSCHER_REG_WDOG_CONTROL
);
460 data
->global_event
= fscher_read_value(client
, FSCHER_REG_EVENT_STATE
);
462 data
->last_updated
= jiffies
;
466 up(&data
->update_lock
);
473 #define FAN_INDEX_FROM_NUM(nr) ((nr) - 1)
475 static ssize_t
set_fan_status(struct i2c_client
*client
, struct fscher_data
*data
,
476 const char *buf
, size_t count
, int nr
, int reg
)
478 /* bits 0..1, 3..7 reserved => mask with 0x04 */
479 unsigned long v
= simple_strtoul(buf
, NULL
, 10) & 0x04;
481 down(&data
->update_lock
);
482 data
->fan_status
[FAN_INDEX_FROM_NUM(nr
)] &= ~v
;
483 fscher_write_value(client
, reg
, v
);
484 up(&data
->update_lock
);
488 static ssize_t
show_fan_status(struct fscher_data
*data
, char *buf
, int nr
)
490 /* bits 0..1, 3..7 reserved => mask with 0x04 */
491 return sprintf(buf
, "%u\n", data
->fan_status
[FAN_INDEX_FROM_NUM(nr
)] & 0x04);
494 static ssize_t
set_pwm(struct i2c_client
*client
, struct fscher_data
*data
,
495 const char *buf
, size_t count
, int nr
, int reg
)
497 unsigned long v
= simple_strtoul(buf
, NULL
, 10);
499 down(&data
->update_lock
);
500 data
->fan_min
[FAN_INDEX_FROM_NUM(nr
)] = v
> 0xff ? 0xff : v
;
501 fscher_write_value(client
, reg
, data
->fan_min
[FAN_INDEX_FROM_NUM(nr
)]);
502 up(&data
->update_lock
);
506 static ssize_t
show_pwm(struct fscher_data
*data
, char *buf
, int nr
)
508 return sprintf(buf
, "%u\n", data
->fan_min
[FAN_INDEX_FROM_NUM(nr
)]);
511 static ssize_t
set_fan_div(struct i2c_client
*client
, struct fscher_data
*data
,
512 const char *buf
, size_t count
, int nr
, int reg
)
514 /* supported values: 2, 4, 8 */
515 unsigned long v
= simple_strtoul(buf
, NULL
, 10);
518 case 2: v
= 1; break;
519 case 4: v
= 2; break;
520 case 8: v
= 3; break;
522 dev_err(&client
->dev
, "fan_div value %ld not "
523 "supported. Choose one of 2, 4 or 8!\n", v
);
527 down(&data
->update_lock
);
529 /* bits 2..7 reserved => mask with 0x03 */
530 data
->fan_ripple
[FAN_INDEX_FROM_NUM(nr
)] &= ~0x03;
531 data
->fan_ripple
[FAN_INDEX_FROM_NUM(nr
)] |= v
;
533 fscher_write_value(client
, reg
, data
->fan_ripple
[FAN_INDEX_FROM_NUM(nr
)]);
534 up(&data
->update_lock
);
538 static ssize_t
show_fan_div(struct fscher_data
*data
, char *buf
, int nr
)
540 /* bits 2..7 reserved => mask with 0x03 */
541 return sprintf(buf
, "%u\n", 1 << (data
->fan_ripple
[FAN_INDEX_FROM_NUM(nr
)] & 0x03));
544 #define RPM_FROM_REG(val) (val*60)
546 static ssize_t
show_fan_input (struct fscher_data
*data
, char *buf
, int nr
)
548 return sprintf(buf
, "%u\n", RPM_FROM_REG(data
->fan_act
[FAN_INDEX_FROM_NUM(nr
)]));
553 #define TEMP_INDEX_FROM_NUM(nr) ((nr) - 1)
555 static ssize_t
set_temp_status(struct i2c_client
*client
, struct fscher_data
*data
,
556 const char *buf
, size_t count
, int nr
, int reg
)
558 /* bits 2..7 reserved, 0 read only => mask with 0x02 */
559 unsigned long v
= simple_strtoul(buf
, NULL
, 10) & 0x02;
561 down(&data
->update_lock
);
562 data
->temp_status
[TEMP_INDEX_FROM_NUM(nr
)] &= ~v
;
563 fscher_write_value(client
, reg
, v
);
564 up(&data
->update_lock
);
568 static ssize_t
show_temp_status(struct fscher_data
*data
, char *buf
, int nr
)
570 /* bits 2..7 reserved => mask with 0x03 */
571 return sprintf(buf
, "%u\n", data
->temp_status
[TEMP_INDEX_FROM_NUM(nr
)] & 0x03);
574 #define TEMP_FROM_REG(val) (((val) - 128) * 1000)
576 static ssize_t
show_temp_input(struct fscher_data
*data
, char *buf
, int nr
)
578 return sprintf(buf
, "%d\n", TEMP_FROM_REG(data
->temp_act
[TEMP_INDEX_FROM_NUM(nr
)]));
582 * The final conversion is specified in sensors.conf, as it depends on
583 * mainboard specific values. We export the registers contents as
584 * pseudo-hundredths-of-Volts (range 0V - 2.55V). Not that it makes much
585 * sense per se, but it minimizes the conversions count and keeps the
586 * values within a usual range.
588 #define VOLT_FROM_REG(val) ((val) * 10)
590 static ssize_t
show_in_input(struct fscher_data
*data
, char *buf
, int nr
)
592 return sprintf(buf
, "%u\n", VOLT_FROM_REG(data
->volt
[nr
]));
597 static ssize_t
show_revision(struct fscher_data
*data
, char *buf
, int nr
)
599 return sprintf(buf
, "%u\n", data
->revision
);
604 static ssize_t
show_alarms(struct fscher_data
*data
, char *buf
, int nr
)
606 /* bits 2, 5..6 reserved => mask with 0x9b */
607 return sprintf(buf
, "%u\n", data
->global_event
& 0x9b);
612 static ssize_t
set_control(struct i2c_client
*client
, struct fscher_data
*data
,
613 const char *buf
, size_t count
, int nr
, int reg
)
615 /* bits 1..7 reserved => mask with 0x01 */
616 unsigned long v
= simple_strtoul(buf
, NULL
, 10) & 0x01;
618 down(&data
->update_lock
);
619 data
->global_control
&= ~v
;
620 fscher_write_value(client
, reg
, v
);
621 up(&data
->update_lock
);
625 static ssize_t
show_control(struct fscher_data
*data
, char *buf
, int nr
)
627 /* bits 1..7 reserved => mask with 0x01 */
628 return sprintf(buf
, "%u\n", data
->global_control
& 0x01);
633 static ssize_t
set_watchdog_control(struct i2c_client
*client
, struct
634 fscher_data
*data
, const char *buf
, size_t count
,
637 /* bits 0..3 reserved => mask with 0xf0 */
638 unsigned long v
= simple_strtoul(buf
, NULL
, 10) & 0xf0;
640 down(&data
->update_lock
);
641 data
->watchdog
[2] &= ~0xf0;
642 data
->watchdog
[2] |= v
;
643 fscher_write_value(client
, reg
, data
->watchdog
[2]);
644 up(&data
->update_lock
);
648 static ssize_t
show_watchdog_control(struct fscher_data
*data
, char *buf
, int nr
)
650 /* bits 0..3 reserved, bit 5 write only => mask with 0xd0 */
651 return sprintf(buf
, "%u\n", data
->watchdog
[2] & 0xd0);
654 static ssize_t
set_watchdog_status(struct i2c_client
*client
, struct fscher_data
*data
,
655 const char *buf
, size_t count
, int nr
, int reg
)
657 /* bits 0, 2..7 reserved => mask with 0x02 */
658 unsigned long v
= simple_strtoul(buf
, NULL
, 10) & 0x02;
660 down(&data
->update_lock
);
661 data
->watchdog
[1] &= ~v
;
662 fscher_write_value(client
, reg
, v
);
663 up(&data
->update_lock
);
667 static ssize_t
show_watchdog_status(struct fscher_data
*data
, char *buf
, int nr
)
669 /* bits 0, 2..7 reserved => mask with 0x02 */
670 return sprintf(buf
, "%u\n", data
->watchdog
[1] & 0x02);
673 static ssize_t
set_watchdog_preset(struct i2c_client
*client
, struct fscher_data
*data
,
674 const char *buf
, size_t count
, int nr
, int reg
)
676 unsigned long v
= simple_strtoul(buf
, NULL
, 10) & 0xff;
678 down(&data
->update_lock
);
679 data
->watchdog
[0] = v
;
680 fscher_write_value(client
, reg
, data
->watchdog
[0]);
681 up(&data
->update_lock
);
685 static ssize_t
show_watchdog_preset(struct fscher_data
*data
, char *buf
, int nr
)
687 return sprintf(buf
, "%u\n", data
->watchdog
[0]);
690 static int __init
sensors_fscher_init(void)
692 return i2c_add_driver(&fscher_driver
);
695 static void __exit
sensors_fscher_exit(void)
697 i2c_del_driver(&fscher_driver
);
700 MODULE_AUTHOR("Reinhard Nissl <rnissl@gmx.de>");
701 MODULE_DESCRIPTION("FSC Hermes driver");
702 MODULE_LICENSE("GPL");
704 module_init(sensors_fscher_init
);
705 module_exit(sensors_fscher_exit
);