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lm80.c @ 1015

Revision 1015, 23.0 KB (checked in by mds, 12 years ago)

Disable sensors.c and i2c-isa.h in the Module.mk files.

Leave the files there for now.
Remove old installed sensors.o in kernel/Module.mk.
sensors.c was moved to i2c-proc.c in the i2c package.
i2c-isa.h was appended to i2c.h in the i2c package.
Delete all but the SYSCTL and ALARMS definitions in sensors.h,
as the rest of the file was moved to i2c-proc.h in the i2c package.
Remove #include "i2c-isa.h" lines in all chip drivers and
in bus driver i2c-isa.c.
This all probably breaks mkpatch.

Property svn:eol-style set to native
Property svn:keywords set to Author Date Id Revision

Line
1	/*
2	lm80.c - Part of lm_sensors, Linux kernel modules for hardware
3	monitoring
4	Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl>
5	and Philip Edelbrock <phil@netroedge.com>
6
7	This program is free software; you can redistribute it and/or modify
8	it under the terms of the GNU General Public License as published by
9	the Free Software Foundation; either version 2 of the License, or
10	(at your option) any later version.
11
12	This program is distributed in the hope that it will be useful,
13	but WITHOUT ANY WARRANTY; without even the implied warranty of
14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15	GNU General Public License for more details.
16
17	You should have received a copy of the GNU General Public License
18	along with this program; if not, write to the Free Software
19	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20	*/
21
22	#include <linux/version.h>
23	#include <linux/module.h>
24	#include <linux/malloc.h>
25	#include <linux/proc_fs.h>
26	#include <linux/ioport.h>
27	#include <linux/sysctl.h>
28	#include <asm/errno.h>
29	#include <asm/io.h>
30	#include <linux/types.h>
31	#include <linux/i2c.h>
32	#include "version.h"
33	#include "sensors.h"
34	#include <linux/init.h>
35
36	#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,2,18)) \|\| \
37	(LINUX_VERSION_CODE == KERNEL_VERSION(2,3,0))
38	#define init_MUTEX(s) do { *(s) = MUTEX; } while(0)
39	#endif
40
41	#ifndef THIS_MODULE
42	#define THIS_MODULE NULL
43	#endif
44
45	/* Addresses to scan */
46	static unsigned short normal_i2c[] = { SENSORS_I2C_END };
47	static unsigned short normal_i2c_range[] = { 0x20, 0x2f, SENSORS_I2C_END };
48	static unsigned int normal_isa[] = { SENSORS_ISA_END };
49	static unsigned int normal_isa_range[] = { SENSORS_ISA_END };
50
51	/* Insmod parameters */
52	SENSORS_INSMOD_1(lm80);
53
54	/* Many LM80 constants specified below */
55
56	/* The LM80 registers */
57	#define LM80_REG_IN_MAX(nr) (0x2a + (nr) * 2)
58	#define LM80_REG_IN_MIN(nr) (0x2b + (nr) * 2)
59	#define LM80_REG_IN(nr) (0x20 + (nr))
60
61	#define LM80_REG_FAN1_MIN 0x3c
62	#define LM80_REG_FAN2_MIN 0x3d
63	#define LM80_REG_FAN1 0x28
64	#define LM80_REG_FAN2 0x29
65
66	#define LM80_REG_TEMP 0x27
67	#define LM80_REG_TEMP_HOT_MAX 0x38
68	#define LM80_REG_TEMP_HOT_HYST 0x39
69	#define LM80_REG_TEMP_OS_MAX 0x3a
70	#define LM80_REG_TEMP_OS_HYST 0x3b
71
72	#define LM80_REG_CONFIG 0x00
73	#define LM80_REG_ALARM1 0x01
74	#define LM80_REG_ALARM2 0x02
75	#define LM80_REG_MASK1 0x03
76	#define LM80_REG_MASK2 0x04
77	#define LM80_REG_FANDIV 0x05
78	#define LM80_REG_RES 0x06
79
80
81	/* Conversions. Rounding and limit checking is only done on the TO_REG
82	variants. Note that you should be a bit careful with which arguments
83	these macros are called: arguments may be evaluated more than once.
84	Fixing this is just not worth it. */
85
86	#define IN_TO_REG(val,nr) (SENSORS_LIMIT((val),0,255))
87	#define IN_FROM_REG(val,nr) (val)
88
89	extern inline unsigned char FAN_TO_REG(unsigned rpm, unsigned div)
90	{
91	if (rpm == 0)
92	return 255;
93	rpm = SENSORS_LIMIT(rpm, 1, 1000000);
94	return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1,
95	254);
96	}
97
98	#define FAN_FROM_REG(val,div) ((val)==0?-1:\
99	(val)==255?0:1350000/((div)*(val)))
100
101	extern inline long TEMP_FROM_REG(u16 temp)
102	{
103	long res;
104
105	temp = temp >> 4;
106	if (temp < 0x0800) {
107	res = (625 * (long) temp);
108	} else {
109	res = ((long) temp - 0x01000) * 625;
110	}
111	return res / 100;
112	}
113
114	#define TEMP_LIMIT_FROM_REG(val) (((val)>0x80?(val)-0x100:(val))*100)
115
116	#define TEMP_LIMIT_TO_REG(val) SENSORS_LIMIT(((val)<0?(((val)-50)/100):\
117	((val)+50)/100), \
118	0,255)
119
120	#define ALARMS_FROM_REG(val) (val)
121
122	#define DIV_FROM_REG(val) (1 << (val))
123	#define DIV_TO_REG(val) ((val)==8?3:(val)==4?2:(val)==1?0:1)
124
125	/* Initial limits */
126	#define LM80_INIT_IN_0 190
127	#define LM80_INIT_IN_1 190
128	#define LM80_INIT_IN_2 190
129	#define LM80_INIT_IN_3 190
130	#define LM80_INIT_IN_4 190
131	#define LM80_INIT_IN_5 190
132	#define LM80_INIT_IN_6 190
133
134	#define LM80_INIT_IN_PERCENTAGE 10
135
136	#define LM80_INIT_IN_MIN_0 \
137	(LM80_INIT_IN_0 - LM80_INIT_IN_0 * LM80_INIT_IN_PERCENTAGE / 100)
138	#define LM80_INIT_IN_MAX_0 \
139	(LM80_INIT_IN_0 + LM80_INIT_IN_0 * LM80_INIT_IN_PERCENTAGE / 100)
140	#define LM80_INIT_IN_MIN_1 \
141	(LM80_INIT_IN_1 - LM80_INIT_IN_1 * LM80_INIT_IN_PERCENTAGE / 100)
142	#define LM80_INIT_IN_MAX_1 \
143	(LM80_INIT_IN_1 + LM80_INIT_IN_1 * LM80_INIT_IN_PERCENTAGE / 100)
144	#define LM80_INIT_IN_MIN_2 \
145	(LM80_INIT_IN_2 - LM80_INIT_IN_2 * LM80_INIT_IN_PERCENTAGE / 100)
146	#define LM80_INIT_IN_MAX_2 \
147	(LM80_INIT_IN_2 + LM80_INIT_IN_2 * LM80_INIT_IN_PERCENTAGE / 100)
148	#define LM80_INIT_IN_MIN_3 \
149	(LM80_INIT_IN_3 - LM80_INIT_IN_3 * LM80_INIT_IN_PERCENTAGE / 100)
150	#define LM80_INIT_IN_MAX_3 \
151	(LM80_INIT_IN_3 + LM80_INIT_IN_3 * LM80_INIT_IN_PERCENTAGE / 100)
152	#define LM80_INIT_IN_MIN_4 \
153	(LM80_INIT_IN_4 - LM80_INIT_IN_4 * LM80_INIT_IN_PERCENTAGE / 100)
154	#define LM80_INIT_IN_MAX_4 \
155	(LM80_INIT_IN_4 + LM80_INIT_IN_4 * LM80_INIT_IN_PERCENTAGE / 100)
156	#define LM80_INIT_IN_MIN_5 \
157	(LM80_INIT_IN_5 - LM80_INIT_IN_5 * LM80_INIT_IN_PERCENTAGE / 100)
158	#define LM80_INIT_IN_MAX_5 \
159	(LM80_INIT_IN_5 + LM80_INIT_IN_5 * LM80_INIT_IN_PERCENTAGE / 100)
160	#define LM80_INIT_IN_MIN_6 \
161	(LM80_INIT_IN_6 - LM80_INIT_IN_6 * LM80_INIT_IN_PERCENTAGE / 100)
162	#define LM80_INIT_IN_MAX_6 \
163	(LM80_INIT_IN_6 + LM80_INIT_IN_6 * LM80_INIT_IN_PERCENTAGE / 100)
164
165	#define LM80_INIT_FAN_MIN_1 3000
166	#define LM80_INIT_FAN_MIN_2 3000
167
168	#define LM80_INIT_TEMP_OS_MAX 600
169	#define LM80_INIT_TEMP_OS_HYST 500
170	#define LM80_INIT_TEMP_HOT_MAX 700
171	#define LM80_INIT_TEMP_HOT_HYST 600
172
173	#ifdef MODULE
174	extern int init_module(void);
175	extern int cleanup_module(void);
176	#endif /* MODULE */
177
178	/* For each registered LM80, we need to keep some data in memory. That
179	data is pointed to by lm80_list[NR]->data. The structure itself is
180	dynamically allocated, at the same time when a new lm80 client is
181	allocated. */
182	struct lm80_data {
183	int sysctl_id;
184
185	struct semaphore update_lock;
186	char valid; /* !=0 if following fields are valid */
187	unsigned long last_updated; /* In jiffies */
188
189	u8 in[7]; /* Register value */
190	u8 in_max[7]; /* Register value */
191	u8 in_min[7]; /* Register value */
192	u8 fan[2]; /* Register value */
193	u8 fan_min[2]; /* Register value */
194	u8 fan_div[2]; /* Register encoding, shifted right */
195	u16 temp; /* Register values, shifted right */
196	u8 temp_hot_max; /* Register value */
197	u8 temp_hot_hyst; /* Register value */
198	u8 temp_os_max; /* Register value */
199	u8 temp_os_hyst; /* Register value */
200	u16 alarms; /* Register encoding, combined */
201	};
202
203
204	#ifdef MODULE
205	static
206	#else
207	extern
208	#endif
209	int __init sensors_lm80_init(void);
210	static int __init lm80_cleanup(void);
211
212	static int lm80_attach_adapter(struct i2c_adapter *adapter);
213	static int lm80_detect(struct i2c_adapter *adapter, int address,
214	unsigned short flags, int kind);
215	static int lm80_detach_client(struct i2c_client *client);
216	static int lm80_command(struct i2c_client *client, unsigned int cmd,
217	void *arg);
218	static void lm80_inc_use(struct i2c_client *client);
219	static void lm80_dec_use(struct i2c_client *client);
220
221	static int lm80_read_value(struct i2c_client *client, u8 register);
222	static int lm80_write_value(struct i2c_client *client, u8 register,
223	u8 value);
224	static void lm80_update_client(struct i2c_client *client);
225	static void lm80_init_client(struct i2c_client *client);
226
227
228	static void lm80_in(struct i2c_client *client, int operation, int ctl_name,
229	int nrels_mag, long results);
230	static void lm80_fan(struct i2c_client *client, int operation,
231	int ctl_name, int nrels_mag, long results);
232	static void lm80_temp(struct i2c_client *client, int operation,
233	int ctl_name, int nrels_mag, long results);
234	static void lm80_alarms(struct i2c_client *client, int operation,
235	int ctl_name, int nrels_mag, long results);
236	static void lm80_fan_div(struct i2c_client *client, int operation,
237	int ctl_name, int nrels_mag, long results);
238
239	static int lm80_id = 0;
240
241	static struct i2c_driver lm80_driver = {
242	/* name */ "LM80 sensor driver",
243	/* id */ I2C_DRIVERID_LM80,
244	/* flags */ I2C_DF_NOTIFY,
245	/* attach_adapter */ &lm80_attach_adapter,
246	/* detach_client */ &lm80_detach_client,
247	/* command */ &lm80_command,
248	/* inc_use */ &lm80_inc_use,
249	/* dec_use */ &lm80_dec_use
250	};
251
252	/* Used by lm80_init/cleanup */
253	static int __initdata lm80_initialized = 0;
254
255	/* The /proc/sys entries */
256	/* These files are created for each detected LM80. This is just a template;
257	though at first sight, you might think we could use a statically
258	allocated list, we need some way to get back to the parent - which
259	is done through one of the 'extra' fields which are initialized
260	when a new copy is allocated. */
261	static ctl_table lm80_dir_table_template[] = {
262	{LM80_SYSCTL_IN0, "in0", NULL, 0, 0644, NULL, &sensors_proc_real,
263	&sensors_sysctl_real, NULL, &lm80_in},
264	{LM80_SYSCTL_IN1, "in1", NULL, 0, 0644, NULL, &sensors_proc_real,
265	&sensors_sysctl_real, NULL, &lm80_in},
266	{LM80_SYSCTL_IN2, "in2", NULL, 0, 0644, NULL, &sensors_proc_real,
267	&sensors_sysctl_real, NULL, &lm80_in},
268	{LM80_SYSCTL_IN3, "in3", NULL, 0, 0644, NULL, &sensors_proc_real,
269	&sensors_sysctl_real, NULL, &lm80_in},
270	{LM80_SYSCTL_IN4, "in4", NULL, 0, 0644, NULL, &sensors_proc_real,
271	&sensors_sysctl_real, NULL, &lm80_in},
272	{LM80_SYSCTL_IN5, "in5", NULL, 0, 0644, NULL, &sensors_proc_real,
273	&sensors_sysctl_real, NULL, &lm80_in},
274	{LM80_SYSCTL_IN6, "in6", NULL, 0, 0644, NULL, &sensors_proc_real,
275	&sensors_sysctl_real, NULL, &lm80_in},
276	{LM80_SYSCTL_FAN1, "fan1", NULL, 0, 0644, NULL, &sensors_proc_real,
277	&sensors_sysctl_real, NULL, &lm80_fan},
278	{LM80_SYSCTL_FAN2, "fan2", NULL, 0, 0644, NULL, &sensors_proc_real,
279	&sensors_sysctl_real, NULL, &lm80_fan},
280	{LM80_SYSCTL_TEMP, "temp", NULL, 0, 0644, NULL, &sensors_proc_real,
281	&sensors_sysctl_real, NULL, &lm80_temp},
282	{LM80_SYSCTL_FAN_DIV, "fan_div", NULL, 0, 0644, NULL, &sensors_proc_real,
283	&sensors_sysctl_real, NULL, &lm80_fan_div},
284	{LM80_SYSCTL_ALARMS, "alarms", NULL, 0, 0444, NULL, &sensors_proc_real,
285	&sensors_sysctl_real, NULL, &lm80_alarms},
286	{0}
287	};
288
289	int lm80_attach_adapter(struct i2c_adapter *adapter)
290	{
291	return sensors_detect(adapter, &addr_data, lm80_detect);
292	}
293
294	int lm80_detect(struct i2c_adapter *adapter, int address,
295	unsigned short flags, int kind)
296	{
297	int i, cur;
298	struct i2c_client *new_client;
299	struct lm80_data *data;
300	int err = 0;
301	const char type_name, client_name;
302
303	/* Make sure we aren't probing the ISA bus!! This is just a safety check
304	at this moment; sensors_detect really won't call us. */
305	#ifdef DEBUG
306	if (i2c_is_isa_adapter(adapter)) {
307	printk
308	("lm80.o: lm80_detect called for an ISA bus adapter?!?\n");
309	return 0;
310	}
311	#endif
312
313	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
314	goto ERROR0;
315
316	/* OK. For now, we presume we have a valid client. We now create the
317	client structure, even though we cannot fill it completely yet.
318	But it allows us to access lm80_{read,write}_value. */
319	if (!(new_client = kmalloc(sizeof(struct i2c_client) +
320	sizeof(struct lm80_data),
321	GFP_KERNEL))) {
322	err = -ENOMEM;
323	goto ERROR0;
324	}
325
326	data = (struct lm80_data *) (new_client + 1);
327	new_client->addr = address;
328	new_client->data = data;
329	new_client->adapter = adapter;
330	new_client->driver = &lm80_driver;
331	new_client->flags = 0;
332
333	/* Now, we do the remaining detection. It is lousy. */
334	if (lm80_read_value(new_client, LM80_REG_ALARM2) & 0xc0)
335	goto ERROR1;
336	for (i = 0x2a; i <= 0x3d; i++) {
337	cur = i2c_smbus_read_byte_data(new_client, i);
338	if ((i2c_smbus_read_byte_data(new_client, i + 0x40) != cur)
339	\|\| (i2c_smbus_read_byte_data(new_client, i + 0x80) !=
340	cur)
341	\|\| (i2c_smbus_read_byte_data(new_client, i + 0xc0) !=
342	cur)) goto ERROR1;
343	}
344
345	/* Determine the chip type - only one kind supported! */
346	if (kind <= 0)
347	kind = lm80;
348
349	if (kind == lm80) {
350	type_name = "lm80";
351	client_name = "LM80 chip";
352	} else {
353	#ifdef DEBUG
354	printk("lm80.o: Internal error: unknown kind (%d)?!?",
355	kind);
356	#endif
357	goto ERROR1;
358	}
359
360	/* Fill in the remaining client fields and put it into the global list */
361	strcpy(new_client->name, client_name);
362
363	new_client->id = lm80_id++;
364	data->valid = 0;
365	init_MUTEX(&data->update_lock);
366
367	/* Tell the I2C layer a new client has arrived */
368	if ((err = i2c_attach_client(new_client)))
369	goto ERROR3;
370
371	/* Register a new directory entry with module sensors */
372	if ((i = sensors_register_entry(new_client, type_name,
373	lm80_dir_table_template,
374	THIS_MODULE)) < 0) {
375	err = i;
376	goto ERROR4;
377	}
378	data->sysctl_id = i;
379
380	lm80_init_client(new_client);
381	return 0;
382
383	/* OK, this is not exactly good programming practice, usually. But it is
384	very code-efficient in this case. */
385	ERROR4:
386	i2c_detach_client(new_client);
387	ERROR3:
388	ERROR1:
389	kfree(new_client);
390	ERROR0:
391	return err;
392	}
393
394	int lm80_detach_client(struct i2c_client *client)
395	{
396	int err;
397
398	sensors_deregister_entry(((struct lm80_data *) (client->data))->
399	sysctl_id);
400
401	if ((err = i2c_detach_client(client))) {
402	printk
403	("lm80.o: Client deregistration failed, client not detached.\n");
404	return err;
405	}
406
407	kfree(client);
408
409	return 0;
410	}
411
412	/* No commands defined yet */
413	int lm80_command(struct i2c_client client, unsigned int cmd, void arg)
414	{
415	return 0;
416	}
417
418	void lm80_inc_use(struct i2c_client *client)
419	{
420	#ifdef MODULE
421	MOD_INC_USE_COUNT;
422	#endif
423	}
424
425	void lm80_dec_use(struct i2c_client *client)
426	{
427	#ifdef MODULE
428	MOD_DEC_USE_COUNT;
429	#endif
430	}
431
432
433	int lm80_read_value(struct i2c_client *client, u8 reg)
434	{
435	return i2c_smbus_read_byte_data(client, reg);
436	}
437
438	int lm80_write_value(struct i2c_client *client, u8 reg, u8 value)
439	{
440	return i2c_smbus_write_byte_data(client, reg, value);
441	}
442
443	/* Called when we have found a new LM80. It should set limits, etc. */
444	void lm80_init_client(struct i2c_client *client)
445	{
446	/* Reset all except Watchdog values and last conversion values
447	This sets fan-divs to 2, among others. This makes most other
448	initializations unnecessary */
449	lm80_write_value(client, LM80_REG_CONFIG, 0x80);
450	/* Set 11-bit temperature resolution */
451	lm80_write_value(client, LM80_REG_RES, 0x08);
452
453	lm80_write_value(client, LM80_REG_IN_MIN(0),
454	IN_TO_REG(LM80_INIT_IN_MIN_0, 0));
455	lm80_write_value(client, LM80_REG_IN_MAX(0),
456	IN_TO_REG(LM80_INIT_IN_MAX_0, 0));
457	lm80_write_value(client, LM80_REG_IN_MIN(1),
458	IN_TO_REG(LM80_INIT_IN_MIN_1, 1));
459	lm80_write_value(client, LM80_REG_IN_MAX(1),
460	IN_TO_REG(LM80_INIT_IN_MAX_1, 1));
461	lm80_write_value(client, LM80_REG_IN_MIN(2),
462	IN_TO_REG(LM80_INIT_IN_MIN_2, 2));
463	lm80_write_value(client, LM80_REG_IN_MAX(2),
464	IN_TO_REG(LM80_INIT_IN_MAX_2, 2));
465	lm80_write_value(client, LM80_REG_IN_MIN(3),
466	IN_TO_REG(LM80_INIT_IN_MIN_3, 3));
467	lm80_write_value(client, LM80_REG_IN_MAX(3),
468	IN_TO_REG(LM80_INIT_IN_MAX_3, 3));
469	lm80_write_value(client, LM80_REG_IN_MIN(4),
470	IN_TO_REG(LM80_INIT_IN_MIN_4, 4));
471	lm80_write_value(client, LM80_REG_IN_MAX(4),
472	IN_TO_REG(LM80_INIT_IN_MAX_4, 4));
473	lm80_write_value(client, LM80_REG_IN_MIN(5),
474	IN_TO_REG(LM80_INIT_IN_MIN_5, 5));
475	lm80_write_value(client, LM80_REG_IN_MAX(5),
476	IN_TO_REG(LM80_INIT_IN_MAX_5, 5));
477	lm80_write_value(client, LM80_REG_IN_MIN(6),
478	IN_TO_REG(LM80_INIT_IN_MIN_6, 6));
479	lm80_write_value(client, LM80_REG_IN_MAX(6),
480	IN_TO_REG(LM80_INIT_IN_MAX_6, 6));
481	lm80_write_value(client, LM80_REG_FAN1_MIN,
482	FAN_TO_REG(LM80_INIT_FAN_MIN_1, 2));
483	lm80_write_value(client, LM80_REG_FAN2_MIN,
484	FAN_TO_REG(LM80_INIT_FAN_MIN_2, 2));
485	lm80_write_value(client, LM80_REG_TEMP_HOT_MAX,
486	TEMP_LIMIT_TO_REG(LM80_INIT_TEMP_OS_MAX));
487	lm80_write_value(client, LM80_REG_TEMP_HOT_HYST,
488	TEMP_LIMIT_TO_REG(LM80_INIT_TEMP_OS_HYST));
489	lm80_write_value(client, LM80_REG_TEMP_OS_MAX,
490	TEMP_LIMIT_TO_REG(LM80_INIT_TEMP_OS_MAX));
491	lm80_write_value(client, LM80_REG_TEMP_OS_HYST,
492	TEMP_LIMIT_TO_REG(LM80_INIT_TEMP_OS_HYST));
493
494	/* Start monitoring */
495	lm80_write_value(client, LM80_REG_CONFIG, 0x01);
496	}
497
498	void lm80_update_client(struct i2c_client *client)
499	{
500	struct lm80_data *data = client->data;
501	int i;
502
503	down(&data->update_lock);
504
505	if ((jiffies - data->last_updated > 2 * HZ) \|\|
506	(jiffies < data->last_updated) \|\| !data->valid) {
507
508	#ifdef DEBUG
509	printk("Starting lm80 update\n");
510	#endif
511	for (i = 0; i <= 6; i++) {
512	data->in[i] =
513	lm80_read_value(client, LM80_REG_IN(i));
514	data->in_min[i] =
515	lm80_read_value(client, LM80_REG_IN_MIN(i));
516	data->in_max[i] =
517	lm80_read_value(client, LM80_REG_IN_MAX(i));
518	}
519	data->fan[0] = lm80_read_value(client, LM80_REG_FAN1);
520	data->fan_min[0] =
521	lm80_read_value(client, LM80_REG_FAN1_MIN);
522	data->fan[1] = lm80_read_value(client, LM80_REG_FAN2);
523	data->fan_min[1] =
524	lm80_read_value(client, LM80_REG_FAN2_MIN);
525
526	data->temp =
527	(lm80_read_value(client, LM80_REG_TEMP) << 8) \|
528	(lm80_read_value(client, LM80_REG_RES) & 0xf0);
529	data->temp_os_max =
530	lm80_read_value(client, LM80_REG_TEMP_OS_MAX);
531	data->temp_os_hyst =
532	lm80_read_value(client, LM80_REG_TEMP_OS_HYST);
533	data->temp_hot_max =
534	lm80_read_value(client, LM80_REG_TEMP_HOT_MAX);
535	data->temp_hot_hyst =
536	lm80_read_value(client, LM80_REG_TEMP_HOT_HYST);
537
538	i = lm80_read_value(client, LM80_REG_FANDIV);
539	data->fan_div[0] = (i >> 2) & 0x03;
540	data->fan_div[1] = (i >> 4) & 0x03;
541	data->alarms = lm80_read_value(client, LM80_REG_ALARM1) +
542	(lm80_read_value(client, LM80_REG_ALARM2) << 8);
543	data->last_updated = jiffies;
544	data->valid = 1;
545	}
546
547	up(&data->update_lock);
548	}
549
550
551	/* The next few functions are the call-back functions of the /proc/sys and
552	sysctl files. Which function is used is defined in the ctl_table in
553	the extra1 field.
554	Each function must return the magnitude (power of 10 to divide the date
555	with) if it is called with operation==SENSORS_PROC_REAL_INFO. It must
556	put a maximum of *nrels elements in results reflecting the data of this
557	file, and set *nrels to the number it actually put in it, if operation==
558	SENSORS_PROC_REAL_READ. Finally, it must get upto *nrels elements from
559	results and write them to the chip, if operations==SENSORS_PROC_REAL_WRITE.
560	Note that on SENSORS_PROC_REAL_READ, I do not check whether results is
561	large enough (by checking the incoming value of *nrels). This is not very
562	good practice, but as long as you put less than about 5 values in results,
563	you can assume it is large enough. */
564	void lm80_in(struct i2c_client *client, int operation, int ctl_name,
565	int nrels_mag, long results)
566	{
567	struct lm80_data *data = client->data;
568	int nr = ctl_name - LM80_SYSCTL_IN0;
569
570	if (operation == SENSORS_PROC_REAL_INFO)
571	*nrels_mag = 2;
572	else if (operation == SENSORS_PROC_REAL_READ) {
573	lm80_update_client(client);
574	results[0] = IN_FROM_REG(data->in_min[nr], nr);
575	results[1] = IN_FROM_REG(data->in_max[nr], nr);
576	results[2] = IN_FROM_REG(data->in[nr], nr);
577	*nrels_mag = 3;
578	} else if (operation == SENSORS_PROC_REAL_WRITE) {
579	if (*nrels_mag >= 1) {
580	data->in_min[nr] = IN_TO_REG(results[0], nr);
581	lm80_write_value(client, LM80_REG_IN_MIN(nr),
582	data->in_min[nr]);
583	}
584	if (*nrels_mag >= 2) {
585	data->in_max[nr] = IN_TO_REG(results[1], nr);
586	lm80_write_value(client, LM80_REG_IN_MAX(nr),
587	data->in_max[nr]);
588	}
589	}
590	}
591
592	void lm80_fan(struct i2c_client *client, int operation, int ctl_name,
593	int nrels_mag, long results)
594	{
595	struct lm80_data *data = client->data;
596	int nr = ctl_name - LM80_SYSCTL_FAN1 + 1;
597
598	if (operation == SENSORS_PROC_REAL_INFO)
599	*nrels_mag = 0;
600	else if (operation == SENSORS_PROC_REAL_READ) {
601	lm80_update_client(client);
602	results[0] = FAN_FROM_REG(data->fan_min[nr - 1],
603	DIV_FROM_REG(data->
604	fan_div[nr - 1]));
605	results[1] =
606	FAN_FROM_REG(data->fan[nr - 1],
607	DIV_FROM_REG(data->fan_div[nr - 1]));
608	*nrels_mag = 2;
609	} else if (operation == SENSORS_PROC_REAL_WRITE) {
610	if (*nrels_mag >= 1) {
611	data->fan_min[nr - 1] = FAN_TO_REG(results[0],
612	DIV_FROM_REG
613	(data->
614	fan_div[nr -
615	1]));
616	lm80_write_value(client,
617	nr ==
618	1 ? LM80_REG_FAN1_MIN :
619	LM80_REG_FAN2_MIN,
620	data->fan_min[nr - 1]);
621	}
622	}
623	}
624
625
626	void lm80_temp(struct i2c_client *client, int operation, int ctl_name,
627	int nrels_mag, long results)
628	{
629	struct lm80_data *data = client->data;
630	if (operation == SENSORS_PROC_REAL_INFO)
631	*nrels_mag = 2;
632	else if (operation == SENSORS_PROC_REAL_READ) {
633	lm80_update_client(client);
634	results[0] = TEMP_LIMIT_FROM_REG(data->temp_hot_max);
635	results[1] = TEMP_LIMIT_FROM_REG(data->temp_hot_hyst);
636	results[2] = TEMP_LIMIT_FROM_REG(data->temp_os_max);
637	results[3] = TEMP_LIMIT_FROM_REG(data->temp_os_hyst);
638	results[4] = TEMP_FROM_REG(data->temp);
639	*nrels_mag = 5;
640	} else if (operation == SENSORS_PROC_REAL_WRITE) {
641	if (*nrels_mag >= 1) {
642	data->temp_hot_max = TEMP_LIMIT_TO_REG(results[0]);
643	lm80_write_value(client, LM80_REG_TEMP_HOT_MAX,
644	data->temp_hot_max);
645	}
646	if (*nrels_mag >= 2) {
647	data->temp_hot_hyst =
648	TEMP_LIMIT_TO_REG(results[1]);
649	lm80_write_value(client, LM80_REG_TEMP_HOT_HYST,
650	data->temp_hot_hyst);
651	}
652	if (*nrels_mag >= 3) {
653	data->temp_os_max = TEMP_LIMIT_TO_REG(results[2]);
654	lm80_write_value(client, LM80_REG_TEMP_OS_MAX,
655	data->temp_os_max);
656	}
657	if (*nrels_mag >= 4) {
658	data->temp_os_hyst = TEMP_LIMIT_TO_REG(results[3]);
659	lm80_write_value(client, LM80_REG_TEMP_OS_HYST,
660	data->temp_os_hyst);
661	}
662	}
663	}
664
665	void lm80_alarms(struct i2c_client *client, int operation, int ctl_name,
666	int nrels_mag, long results)
667	{
668	struct lm80_data *data = client->data;
669	if (operation == SENSORS_PROC_REAL_INFO)
670	*nrels_mag = 0;
671	else if (operation == SENSORS_PROC_REAL_READ) {
672	lm80_update_client(client);
673	results[0] = ALARMS_FROM_REG(data->alarms);
674	*nrels_mag = 1;
675	}
676	}
677
678	void lm80_fan_div(struct i2c_client *client, int operation, int ctl_name,
679	int nrels_mag, long results)
680	{
681	struct lm80_data *data = client->data;
682	int old;
683
684	if (operation == SENSORS_PROC_REAL_INFO)
685	*nrels_mag = 0;
686	else if (operation == SENSORS_PROC_REAL_READ) {
687	lm80_update_client(client);
688	results[0] = DIV_FROM_REG(data->fan_div[0]);
689	results[1] = DIV_FROM_REG(data->fan_div[1]);
690	results[2] = 2;
691	*nrels_mag = 3;
692	} else if (operation == SENSORS_PROC_REAL_WRITE) {
693	old = lm80_read_value(client, LM80_REG_FANDIV);
694	if (*nrels_mag >= 2) {
695	data->fan_div[1] = DIV_TO_REG(results[1]);
696	old = (old & 0xcf) \| (data->fan_div[1] << 4);
697	}
698	if (*nrels_mag >= 1) {
699	data->fan_div[0] = DIV_TO_REG(results[0]);
700	old = (old & 0xf3) \| (data->fan_div[0] << 2);
701	lm80_write_value(client, LM80_REG_FANDIV, old);
702	}
703	}
704	}
705
706	int __init sensors_lm80_init(void)
707	{
708	int res;
709
710	printk("lm80.o version %s (%s)\n", LM_VERSION, LM_DATE);
711	lm80_initialized = 0;
712
713	if ((res = i2c_add_driver(&lm80_driver))) {
714	printk
715	("lm80.o: Driver registration failed, module not inserted.\n");
716	lm80_cleanup();
717	return res;
718	}
719	lm80_initialized++;
720	return 0;
721	}
722
723	int __init lm80_cleanup(void)
724	{
725	int res;
726
727	if (lm80_initialized >= 1) {
728	if ((res = i2c_del_driver(&lm80_driver))) {
729	printk
730	("lm80.o: Driver deregistration failed, module not removed.\n");
731	return res;
732	}
733	lm80_initialized--;
734	}
735	return 0;
736	}
737
738	EXPORT_NO_SYMBOLS;
739
740	#ifdef MODULE
741
742	MODULE_AUTHOR
743	("Frodo Looijaard <frodol@dds.nl> and Philip Edelbrock <phil@netroedge.com>");
744	MODULE_DESCRIPTION("LM80 driver");
745
746	int init_module(void)
747	{
748	return sensors_lm80_init();
749	}
750
751	int cleanup_module(void)
752	{
753	return lm80_cleanup();
754	}
755
756	#endif /* MODULE */

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