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fscscy.c @ 2784

Revision 2784, 34.0 KB (checked in by khali, 8 years ago)
Restore controlling_mod argument to i2c_register_entry(). This is needed to properly lock chip drivers in memory while anyone uses their /proc entries. This also brings back compatibility with the 2.4 Linux kernel.
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1	/*
2	fscscy.c - Part of lm_sensors, Linux kernel modules for hardware
3	monitoring
4	Copyright (c) 2001 Martin Knoblauch <mkn@teraport.de, knobi@knobisoft.de>
5
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.
10
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.
15
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.
19	*/
20
21	/*
22	fujitsu siemens scylla chip,
23	module based on lm80.c, fscpos.c
24	Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl>
25	and Philip Edelbrock <phil@netroedge.com>
26	*/
27
28	#include <linux/module.h>
29	#include <linux/slab.h>
30	#include <linux/i2c.h>
31	#include <linux/i2c-proc.h>
32	#include <linux/init.h>
33	#include "version.h"
34
35	MODULE_LICENSE("GPL");
36
37	/* Addresses to scan */
38	static unsigned short normal_i2c[] = { 0x73, SENSORS_I2C_END };
39	static unsigned short normal_i2c_range[] = { SENSORS_I2C_END };
40	static unsigned int normal_isa[] = { SENSORS_ISA_END };
41	static unsigned int normal_isa_range[] = { SENSORS_ISA_END };
42
43	/* Insmod parameters */
44	SENSORS_INSMOD_1(fscscy);
45
46	/* The FSCSCY registers */
47
48	/* chip identification */
49	#define FSCSCY_REG_IDENT_0 0x00
50	#define FSCSCY_REG_IDENT_1 0x01
51	#define FSCSCY_REG_IDENT_2 0x02
52	#define FSCSCY_REG_REVISION 0x03
53
54	/* global control and status */
55	#define FSCSCY_REG_EVENT_STATE 0x04
56	#define FSCSCY_REG_CONTROL 0x05
57
58	/* watchdog */
59	#define FSCSCY_REG_WDOG_PRESET 0x28
60	#define FSCSCY_REG_WDOG_STATE 0x23
61	#define FSCSCY_REG_WDOG_CONTROL 0x21
62
63	/*
64	** Fan definitions
65	**
66	** _RPMMIN: Minimum speed. Can be set via interface, but only for three of the fans
67	** FAN1_RPMMIN is wired to Fan 0 (CPU Fans)
68	** FAN4_RPMMIN is wired to Fan 2 (PS Fans ??)
69	** FAN5_RPMMIN is wired to Fan 3 (AUX Fans ??)
70	** _ACT: Actual Fan Speed
71	** _STATE: Fan status register
72	** _RIPPLE: Fan speed multiplier
73	*/
74
75	/* fan 0 */
76	#define FSCSCY_REG_FAN0_RPMMIN 0x65
77	#define FSCSCY_REG_FAN0_ACT 0x6b
78	#define FSCSCY_REG_FAN0_STATE 0x62
79	#define FSCSCY_REG_FAN0_RIPPLE 0x6f
80
81	/* fan 1 */
82	#define FSCSCY_REG_FAN1_RPMMIN FSCSCY_REG_FAN0_RPMMIN
83	#define FSCSCY_REG_FAN1_ACT 0x6c
84	#define FSCSCY_REG_FAN1_STATE 0x61
85	#define FSCSCY_REG_FAN1_RIPPLE 0x6f
86
87	/* fan 2 */
88	#define FSCSCY_REG_FAN2_RPMMIN 0x55
89	#define FSCSCY_REG_FAN2_ACT 0x0e
90	#define FSCSCY_REG_FAN2_STATE 0x0d
91	#define FSCSCY_REG_FAN2_RIPPLE 0x0f
92
93	/* fan 3 */
94	#define FSCSCY_REG_FAN3_RPMMIN 0xa5
95	#define FSCSCY_REG_FAN3_ACT 0xab
96	#define FSCSCY_REG_FAN3_STATE 0xa2
97	#define FSCSCY_REG_FAN3_RIPPLE 0xaf
98
99	/* fan 4 */
100	#define FSCSCY_REG_FAN4_RPMMIN FSCSCY_REG_FAN2_RPMMIN
101	#define FSCSCY_REG_FAN4_ACT 0x5c
102	#define FSCSCY_REG_FAN4_STATE 0x52
103	#define FSCSCY_REG_FAN4_RIPPLE 0x0f
104
105	/* fan 5 */
106	#define FSCSCY_REG_FAN5_RPMMIN FSCSCY_REG_FAN3_RPMMIN
107	#define FSCSCY_REG_FAN5_ACT 0xbb
108	#define FSCSCY_REG_FAN5_STATE 0xb2
109	#define FSCSCY_REG_FAN5_RIPPLE 0xbf
110
111	/* voltage supervision */
112	#define FSCSCY_REG_VOLT_12 0x45
113	#define FSCSCY_REG_VOLT_5 0x42
114	#define FSCSCY_REG_VOLT_BATT 0x48
115
116	/* temperatures */
117	/* sensor 0 */
118	#define FSCSCY_REG_TEMP0_ACT 0x64
119	#define FSCSCY_REG_TEMP0_STATE 0x71
120	#define FSCSCY_REG_TEMP0_LIM 0x76
121
122	/* sensor 1 */
123	#define FSCSCY_REG_TEMP1_ACT 0xD0
124	#define FSCSCY_REG_TEMP1_STATE 0xD1
125	#define FSCSCY_REG_TEMP1_LIM 0xD6
126
127	/* sensor 2 */
128	#define FSCSCY_REG_TEMP2_ACT 0x32
129	#define FSCSCY_REG_TEMP2_STATE 0x81
130	#define FSCSCY_REG_TEMP2_LIM 0x86
131
132	/* sensor3 */
133	#define FSCSCY_REG_TEMP3_ACT 0x35
134	#define FSCSCY_REG_TEMP3_STATE 0x91
135	#define FSCSCY_REG_TEMP3_LIM 0x96
136
137	/* PCI Load */
138	#define FSCSCY_REG_PCILOAD 0x1a
139
140	/* Intrusion Sensor */
141	#define FSCSCY_REG_INTR_STATE 0x13
142	#define FSCSCY_REG_INTR_CTRL 0x12
143
144	/* Conversions. Rounding and limit checking is only done on the TO_REG
145	variants. Note that you should be a bit careful with which arguments
146	these macros are called: arguments may be evaluated more than once.
147	Fixing this is just not worth it. */
148
149	#define IN_TO_REG(val,nr) (SENSORS_LIMIT((val),0,255))
150	#define IN_FROM_REG(val,nr) (val)
151
152	/* Initial limits */
153
154	/* For each registered FSCSCY, we need to keep some data in memory. That
155	data is pointed to by fscscy_list[NR]->data. The structure itself is
156	dynamically allocated, at the same time when a new fscscy client is
157	allocated. */
158	struct fscscy_data {
159	struct i2c_client client;
160	int sysctl_id;
161
162	struct semaphore update_lock;
163	char valid; /* !=0 if following fields are valid */
164	unsigned long last_updated; /* In jiffies */
165
166	u8 revision; /* revision of chip */
167	u8 global_event; /* global event status */
168	u8 global_control; /* global control register */
169	u8 watchdog[3]; /* watchdog */
170	u8 volt[3]; /* 12, 5, battery current */
171	u8 volt_min[3]; /* minimum voltages over module "lifetime" */
172	u8 volt_max[3]; /* maximum voltages over module "lifetime" */
173	u8 temp_act[4]; /* temperature */
174	u8 temp_status[4]; /* status of temp. sensor */
175	u8 temp_lim[4]; /* limit temperature of temp. sensor */
176	u8 temp_min[4]; /* minimum of temp. sensor, this is just calculated by the module */
177	u8 temp_max[4]; /* maximum of temp. sensor, this is just calculsted by the module */
178	u8 fan_act[6]; /* fans revolutions per second */
179	u8 fan_status[6]; /* fan status */
180	u8 fan_rpmmin[6]; /* fan min value for rps */
181	u8 fan_ripple[6]; /* divider for rps */
182	u8 fan_min[6]; /* minimum RPM over module "lifetime" */
183	u8 fan_max[6]; /* maximum RPM over module "lifetime" */
184	u8 pciload; /* PCILoad value */
185	u8 intr_status; /* Intrusion Status */
186	u8 intr_control; /* Intrusion Control */
187	};
188
189
190	static int fscscy_attach_adapter(struct i2c_adapter *adapter);
191	static int fscscy_detect(struct i2c_adapter *adapter, int address,
192	unsigned short flags, int kind);
193	static int fscscy_detach_client(struct i2c_client *client);
194
195	static int fscscy_read_value(struct i2c_client *client, u8 register);
196	static int fscscy_write_value(struct i2c_client *client, u8 register,
197	u8 value);
198	static void fscscy_update_client(struct i2c_client *client);
199	static void fscscy_init_client(struct i2c_client *client);
200
201
202	static void fscscy_in(struct i2c_client *client, int operation, int ctl_name,
203	int nrels_mag, long results);
204	static void fscscy_fan(struct i2c_client *client, int operation,
205	int ctl_name, int nrels_mag, long results);
206	static void fscscy_fan_internal(struct i2c_client *client, int operation,
207	int ctl_name, int nrels_mag, long results,
208	int nr, int reg_state, int reg_min, int res_ripple);
209	static void fscscy_temp(struct i2c_client *client, int operation,
210	int ctl_name, int nrels_mag, long results);
211	static void fscscy_volt(struct i2c_client *client, int operation,
212	int ctl_name, int nrels_mag, long results);
213	static void fscscy_wdog(struct i2c_client *client, int operation,
214	int ctl_name, int nrels_mag, long results);
215	static void fscscy_pciload(struct i2c_client *client, int operation,
216	int ctl_name, int nrels_mag, long results);
217	static void fscscy_intrusion(struct i2c_client *client, int operation,
218	int ctl_name, int nrels_mag, long results);
219
220	static int fscscy_id = 0;
221
222	static struct i2c_driver fscscy_driver = {
223	.name = "FSCSCY sensor driver",
224	.id = I2C_DRIVERID_FSCSCY,
225	.flags = I2C_DF_NOTIFY,
226	.attach_adapter = fscscy_attach_adapter,
227	.detach_client = fscscy_detach_client,
228	};
229
230	/* The /proc/sys entries */
231
232	/* -- SENSORS SYSCTL START -- */
233	#define FSCSCY_SYSCTL_VOLT0 1000 /* 12 volt supply */
234	#define FSCSCY_SYSCTL_VOLT1 1001 /* 5 volt supply */
235	#define FSCSCY_SYSCTL_VOLT2 1002 /* batterie voltage*/
236	#define FSCSCY_SYSCTL_FAN0 1101 /* state, min, ripple, actual value fan 0 */
237	#define FSCSCY_SYSCTL_FAN1 1102 /* state, min, ripple, actual value fan 1 */
238	#define FSCSCY_SYSCTL_FAN2 1103 /* state, min, ripple, actual value fan 2 */
239	#define FSCSCY_SYSCTL_FAN3 1104 /* state, min, ripple, actual value fan 3 */
240	#define FSCSCY_SYSCTL_FAN4 1105 /* state, min, ripple, actual value fan 4 */
241	#define FSCSCY_SYSCTL_FAN5 1106 /* state, min, ripple, actual value fan 5 */
242	#define FSCSCY_SYSCTL_TEMP0 1201 /* state and value of sensor 0, cpu die */
243	#define FSCSCY_SYSCTL_TEMP1 1202 /* state and value of sensor 1, motherboard */
244	#define FSCSCY_SYSCTL_TEMP2 1203 /* state and value of sensor 2, chassis */
245	#define FSCSCY_SYSCTL_TEMP3 1204 /* state and value of sensor 3, chassis */
246	#define FSCSCY_SYSCTL_REV 2000 /* Revision */
247	#define FSCSCY_SYSCTL_EVENT 2001 /* global event status */
248	#define FSCSCY_SYSCTL_CONTROL 2002 /* global control byte */
249	#define FSCSCY_SYSCTL_WDOG 2003 /* state, min, ripple, actual value fan 2 */
250	#define FSCSCY_SYSCTL_PCILOAD 2004 /* PCILoad value */
251	#define FSCSCY_SYSCTL_INTRUSION 2005 /* state, control for intrusion sensor */
252
253	/* -- SENSORS SYSCTL END -- */
254
255	/* These files are created for each detected FSCSCY. This is just a template;
256	though at first sight, you might think we could use a statically
257	allocated list, we need some way to get back to the parent - which
258	is done through one of the 'extra' fields which are initialized
259	when a new copy is allocated. */
260	static ctl_table fscscy_dir_table_template[] = {
261	{FSCSCY_SYSCTL_REV, "rev", NULL, 0, 0444, NULL, &i2c_proc_real,
262	&i2c_sysctl_real, NULL, &fscscy_in},
263	{FSCSCY_SYSCTL_EVENT, "alarms", NULL, 0, 0444, NULL, &i2c_proc_real,
264	&i2c_sysctl_real, NULL, &fscscy_in},
265	{FSCSCY_SYSCTL_CONTROL, "control", NULL, 0, 0644, NULL, &i2c_proc_real,
266	&i2c_sysctl_real, NULL, &fscscy_in},
267	{FSCSCY_SYSCTL_TEMP0, "temp1", NULL, 0, 0644, NULL, &i2c_proc_real,
268	&i2c_sysctl_real, NULL, &fscscy_temp},
269	{FSCSCY_SYSCTL_TEMP1, "temp2", NULL, 0, 0644, NULL, &i2c_proc_real,
270	&i2c_sysctl_real, NULL, &fscscy_temp},
271	{FSCSCY_SYSCTL_TEMP2, "temp3", NULL, 0, 0644, NULL, &i2c_proc_real,
272	&i2c_sysctl_real, NULL, &fscscy_temp},
273	{FSCSCY_SYSCTL_TEMP3, "temp4", NULL, 0, 0644, NULL, &i2c_proc_real,
274	&i2c_sysctl_real, NULL, &fscscy_temp},
275	{FSCSCY_SYSCTL_VOLT0, "in0", NULL, 0, 0444, NULL, &i2c_proc_real,
276	&i2c_sysctl_real, NULL, &fscscy_volt},
277	{FSCSCY_SYSCTL_VOLT1, "in1", NULL, 0, 0444, NULL, &i2c_proc_real,
278	&i2c_sysctl_real, NULL, &fscscy_volt},
279	{FSCSCY_SYSCTL_VOLT2, "in2", NULL, 0, 0444, NULL, &i2c_proc_real,
280	&i2c_sysctl_real, NULL, &fscscy_volt},
281	{FSCSCY_SYSCTL_FAN0, "fan1", NULL, 0, 0644, NULL, &i2c_proc_real,
282	&i2c_sysctl_real, NULL, &fscscy_fan},
283	{FSCSCY_SYSCTL_FAN1, "fan2", NULL, 0, 0644, NULL, &i2c_proc_real,
284	&i2c_sysctl_real, NULL, &fscscy_fan},
285	{FSCSCY_SYSCTL_FAN2, "fan3", NULL, 0, 0644, NULL, &i2c_proc_real,
286	&i2c_sysctl_real, NULL, &fscscy_fan},
287	{FSCSCY_SYSCTL_FAN3, "fan4", NULL, 0, 0644, NULL, &i2c_proc_real,
288	&i2c_sysctl_real, NULL, &fscscy_fan},
289	{FSCSCY_SYSCTL_FAN4, "fan5", NULL, 0, 0644, NULL, &i2c_proc_real,
290	&i2c_sysctl_real, NULL, &fscscy_fan},
291	{FSCSCY_SYSCTL_FAN5, "fan6", NULL, 0, 0644, NULL, &i2c_proc_real,
292	&i2c_sysctl_real, NULL, &fscscy_fan},
293	{FSCSCY_SYSCTL_WDOG, "wdog", NULL, 0, 0644, NULL, &i2c_proc_real,
294	&i2c_sysctl_real, NULL, &fscscy_wdog},
295	{FSCSCY_SYSCTL_PCILOAD, "pciload", NULL, 0, 0444, NULL, &i2c_proc_real,
296	&i2c_sysctl_real, NULL, &fscscy_pciload},
297	{FSCSCY_SYSCTL_INTRUSION, "intrusion", NULL, 0, 0644, NULL, &i2c_proc_real,
298	&i2c_sysctl_real, NULL, &fscscy_intrusion},
299	{0}
300	};
301
302	static int fscscy_attach_adapter(struct i2c_adapter *adapter)
303	{
304	return i2c_detect(adapter, &addr_data, fscscy_detect);
305	}
306
307	int fscscy_detect(struct i2c_adapter *adapter, int address,
308	unsigned short flags, int kind)
309	{
310	int i;
311	struct i2c_client *new_client;
312	struct fscscy_data *data;
313	int err = 0;
314	const char type_name, client_name;
315
316	/* Make sure we aren't probing the ISA bus!! This is just a safety check
317	at this moment; i2c_detect really won't call us. */
318	#ifdef DEBUG
319	if (i2c_is_isa_adapter(adapter)) {
320	printk
321	("fscscy.o: fscscy_detect called for an ISA bus adapter?!?\n");
322	return 0;
323	}
324	#endif
325
326	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
327	goto ERROR0;
328
329	/* OK. For now, we presume we have a valid client. We now create the
330	client structure, even though we cannot fill it completely yet.
331	But it allows us to access fscscy_{read,write}_value. */
332	if (!(data = kmalloc(sizeof(struct fscscy_data), GFP_KERNEL))) {
333	err = -ENOMEM;
334	goto ERROR0;
335	}
336
337	new_client = &data->client;
338	new_client->addr = address;
339	new_client->data = data;
340	new_client->adapter = adapter;
341	new_client->driver = &fscscy_driver;
342	new_client->flags = 0;
343
344	/* Do the remaining detection unless force or force_fscscy parameter */
345	if (kind < 0) {
346	if (fscscy_read_value(new_client, FSCSCY_REG_IDENT_0) != 0x53)
347	goto ERROR1;
348	if (fscscy_read_value(new_client, FSCSCY_REG_IDENT_1) != 0x43)
349	goto ERROR1;
350	if (fscscy_read_value(new_client, FSCSCY_REG_IDENT_2) != 0x59)
351	goto ERROR1;
352	}
353
354	kind = fscscy;
355
356	type_name = "fscscy";
357	client_name = "fsc scylla chip";
358
359	/* Fill in the remaining client fields and put it into the global list */
360	strcpy(new_client->name, client_name);
361
362	new_client->id = fscscy_id++;
363	data->valid = 0;
364	init_MUTEX(&data->update_lock);
365
366	/* Tell the I2C layer a new client has arrived */
367	if ((err = i2c_attach_client(new_client)))
368	goto ERROR3;
369
370	/* Register a new directory entry with module sensors */
371	if ((i = i2c_register_entry(new_client, type_name,
372	fscscy_dir_table_template,
373	THIS_MODULE)) < 0) {
374	err = i;
375	goto ERROR4;
376	}
377	data->sysctl_id = i;
378
379	fscscy_init_client(new_client);
380	return 0;
381
382	/* OK, this is not exactly good programming practice, usually. But it is
383	very code-efficient in this case. */
384	ERROR4:
385	i2c_detach_client(new_client);
386	ERROR3:
387	ERROR1:
388	kfree(data);
389	ERROR0:
390	return err;
391	}
392
393	static int fscscy_detach_client(struct i2c_client *client)
394	{
395	int err;
396
397	i2c_deregister_entry(((struct fscscy_data *) (client->data))->
398	sysctl_id);
399
400	if ((err = i2c_detach_client(client))) {
401	printk
402	("fscscy.o: Client deregistration failed, client not detached.\n");
403	return err;
404	}
405
406	kfree(client->data);
407
408	return 0;
409	}
410
411	static int fscscy_read_value(struct i2c_client *client, u8 reg)
412	{
413	#ifdef DEBUG
414	printk("fscscy: read reg 0x%02x\n",reg);
415	#endif
416	return i2c_smbus_read_byte_data(client, reg);
417	}
418
419	static int fscscy_write_value(struct i2c_client *client, u8 reg, u8 value)
420	{
421	#ifdef DEBUG
422	printk("fscscy: write reg 0x%02x, val 0x%02x\n",reg, value);
423	#endif
424	return i2c_smbus_write_byte_data(client, reg, value);
425	}
426
427	/* Called when we have found a new FSCSCY. It should set limits, etc. */
428	static void fscscy_init_client(struct i2c_client *client)
429	{
430	struct fscscy_data *data = client->data;
431
432	/* read revision from chip */
433	data->revision = fscscy_read_value(client,FSCSCY_REG_REVISION);
434
435	/* Initialize min/max values from chip */
436	data->fan_min[0] = data->fan_max[0] = fscscy_read_value(client, FSCSCY_REG_FAN0_ACT);
437	data->fan_min[1] = data->fan_max[1] = fscscy_read_value(client, FSCSCY_REG_FAN1_ACT);
438	data->fan_min[2] = data->fan_max[2] = fscscy_read_value(client, FSCSCY_REG_FAN2_ACT);
439	data->fan_min[3] = data->fan_max[3] = fscscy_read_value(client, FSCSCY_REG_FAN3_ACT);
440	data->fan_min[4] = data->fan_max[4] = fscscy_read_value(client, FSCSCY_REG_FAN4_ACT);
441	data->fan_min[4] = data->fan_max[5] = fscscy_read_value(client, FSCSCY_REG_FAN5_ACT);
442	data->temp_min[0] = data->temp_max[0] = fscscy_read_value(client, FSCSCY_REG_TEMP0_ACT);
443	data->temp_min[1] = data->temp_max[1] = fscscy_read_value(client, FSCSCY_REG_TEMP1_ACT);
444	data->temp_min[2] = data->temp_max[2] = fscscy_read_value(client, FSCSCY_REG_TEMP2_ACT);
445	data->temp_min[3] = data->temp_max[3] = fscscy_read_value(client, FSCSCY_REG_TEMP3_ACT);
446	data->volt_min[0] = data->volt_max[0] = fscscy_read_value(client, FSCSCY_REG_VOLT_12);
447	data->volt_min[1] = data->volt_max[1] = fscscy_read_value(client, FSCSCY_REG_VOLT_5);
448	data->volt_min[2] = data->volt_max[2] = fscscy_read_value(client, FSCSCY_REG_VOLT_BATT);
449	}
450
451	static void fscscy_update_client(struct i2c_client *client)
452	{
453	struct fscscy_data *data = client->data;
454
455	down(&data->update_lock);
456
457	if ((jiffies - data->last_updated > 2 * HZ) \|\|
458	(jiffies < data->last_updated) \|\| !data->valid) {
459
460	#ifdef DEBUG
461	printk("Starting fscscy update\n");
462	#endif
463	data->temp_act[0] = fscscy_read_value(client, FSCSCY_REG_TEMP0_ACT);
464	if (data->temp_min[0] > data->temp_act[0]) data->temp_min[0] = data->temp_act[0];
465	if (data->temp_max[0] < data->temp_act[0]) data->temp_max[0] = data->temp_act[0];
466	data->temp_act[1] = fscscy_read_value(client, FSCSCY_REG_TEMP1_ACT);
467	if (data->temp_min[1] > data->temp_act[1]) data->temp_min[1] = data->temp_act[1];
468	if (data->temp_max[1] < data->temp_act[1]) data->temp_max[1] = data->temp_act[1];
469	data->temp_act[2] = fscscy_read_value(client, FSCSCY_REG_TEMP2_ACT);
470	if (data->temp_min[2] > data->temp_act[2]) data->temp_min[2] = data->temp_act[2];
471	if (data->temp_max[2] < data->temp_act[2]) data->temp_max[2] = data->temp_act[2];
472	data->temp_act[3] = fscscy_read_value(client, FSCSCY_REG_TEMP3_ACT);
473	if (data->temp_min[3] > data->temp_act[3]) data->temp_min[3] = data->temp_act[3];
474	if (data->temp_max[3] < data->temp_act[3]) data->temp_max[3] = data->temp_act[3];
475	data->temp_status[0] = fscscy_read_value(client, FSCSCY_REG_TEMP0_STATE);
476	data->temp_status[1] = fscscy_read_value(client, FSCSCY_REG_TEMP1_STATE);
477	data->temp_status[2] = fscscy_read_value(client, FSCSCY_REG_TEMP2_STATE);
478	data->temp_status[3] = fscscy_read_value(client, FSCSCY_REG_TEMP3_STATE);
479	data->temp_lim[0] = fscscy_read_value(client, FSCSCY_REG_TEMP0_LIM);
480	data->temp_lim[1] = fscscy_read_value(client, FSCSCY_REG_TEMP1_LIM);
481	data->temp_lim[2] = fscscy_read_value(client, FSCSCY_REG_TEMP2_LIM);
482	data->temp_lim[3] = fscscy_read_value(client, FSCSCY_REG_TEMP3_LIM);
483
484	data->volt[0] = fscscy_read_value(client, FSCSCY_REG_VOLT_12);
485	if (data->volt_min[0] > data->volt[0]) data->volt_min[0] = data->volt[0];
486	if (data->volt_max[0] < data->volt[0]) data->volt_max[0] = data->volt[0];
487	data->volt[1] = fscscy_read_value(client, FSCSCY_REG_VOLT_5);
488	if (data->volt_min[1] > data->volt[1]) data->volt_min[1] = data->volt[1];
489	if (data->volt_max[1] < data->volt[1]) data->volt_max[1] = data->volt[1];
490	data->volt[2] = fscscy_read_value(client, FSCSCY_REG_VOLT_BATT);
491	if (data->volt_min[2] > data->volt[2]) data->volt_min[2] = data->volt[2];
492	if (data->volt_max[2] < data->volt[2]) data->volt_max[2] = data->volt[2];
493
494	data->fan_act[0] = fscscy_read_value(client, FSCSCY_REG_FAN0_ACT);
495	if (data->fan_min[0] > data->fan_act[0]) data->fan_min[0] = data->fan_act[0];
496	if (data->fan_max[0] < data->fan_act[0]) data->fan_max[0] = data->fan_act[0];
497	data->fan_act[1] = fscscy_read_value(client, FSCSCY_REG_FAN1_ACT);
498	if (data->fan_min[1] > data->fan_act[1]) data->fan_min[1] = data->fan_act[1];
499	if (data->fan_max[1] < data->fan_act[1]) data->fan_max[1] = data->fan_act[1];
500	data->fan_act[2] = fscscy_read_value(client, FSCSCY_REG_FAN2_ACT);
501	if (data->fan_min[2] > data->fan_act[2]) data->fan_min[2] = data->fan_act[2];
502	if (data->fan_max[2] < data->fan_act[2]) data->fan_max[2] = data->fan_act[2];
503	data->fan_act[3] = fscscy_read_value(client, FSCSCY_REG_FAN3_ACT);
504	if (data->fan_min[3] > data->fan_act[3]) data->fan_min[3] = data->fan_act[3];
505	if (data->fan_max[3] < data->fan_act[3]) data->fan_max[3] = data->fan_act[3];
506	data->fan_act[4] = fscscy_read_value(client, FSCSCY_REG_FAN4_ACT);
507	if (data->fan_min[4] > data->fan_act[4]) data->fan_min[4] = data->fan_act[4];
508	if (data->fan_max[4] < data->fan_act[4]) data->fan_max[4] = data->fan_act[4];
509	data->fan_act[5] = fscscy_read_value(client, FSCSCY_REG_FAN5_ACT);
510	if (data->fan_min[5] > data->fan_act[5]) data->fan_min[5] = data->fan_act[5];
511	if (data->fan_max[5] < data->fan_act[5]) data->fan_max[5] = data->fan_act[5];
512	data->fan_status[0] = fscscy_read_value(client, FSCSCY_REG_FAN0_STATE);
513	data->fan_status[1] = fscscy_read_value(client, FSCSCY_REG_FAN1_STATE);
514	data->fan_status[2] = fscscy_read_value(client, FSCSCY_REG_FAN2_STATE);
515	data->fan_status[3] = fscscy_read_value(client, FSCSCY_REG_FAN3_STATE);
516	data->fan_status[4] = fscscy_read_value(client, FSCSCY_REG_FAN4_STATE);
517	data->fan_status[5] = fscscy_read_value(client, FSCSCY_REG_FAN5_STATE);
518	data->fan_rpmmin[0] = fscscy_read_value(client, FSCSCY_REG_FAN0_RPMMIN);
519	data->fan_rpmmin[1] = fscscy_read_value(client, FSCSCY_REG_FAN1_RPMMIN);
520	data->fan_rpmmin[2] = fscscy_read_value(client, FSCSCY_REG_FAN2_RPMMIN);
521	data->fan_rpmmin[3] = fscscy_read_value(client, FSCSCY_REG_FAN3_RPMMIN);
522	data->fan_rpmmin[4] = fscscy_read_value(client, FSCSCY_REG_FAN4_RPMMIN);
523	data->fan_rpmmin[5] = fscscy_read_value(client, FSCSCY_REG_FAN5_RPMMIN);
524	data->fan_ripple[0] = fscscy_read_value(client, FSCSCY_REG_FAN0_RIPPLE);
525	data->fan_ripple[1] = fscscy_read_value(client, FSCSCY_REG_FAN1_RIPPLE);
526	data->fan_ripple[2] = fscscy_read_value(client, FSCSCY_REG_FAN2_RIPPLE);
527	data->fan_ripple[3] = fscscy_read_value(client, FSCSCY_REG_FAN3_RIPPLE);
528	data->fan_ripple[4] = fscscy_read_value(client, FSCSCY_REG_FAN4_RIPPLE);
529	data->fan_ripple[5] = fscscy_read_value(client, FSCSCY_REG_FAN5_RIPPLE);
530
531	data->watchdog[0] = fscscy_read_value(client, FSCSCY_REG_WDOG_PRESET);
532	data->watchdog[1] = fscscy_read_value(client, FSCSCY_REG_WDOG_STATE);
533	data->watchdog[2] = fscscy_read_value(client, FSCSCY_REG_WDOG_CONTROL);
534
535	data->global_event = fscscy_read_value(client, FSCSCY_REG_EVENT_STATE);
536	data->global_control = fscscy_read_value(client, FSCSCY_REG_CONTROL);
537	data->pciload = fscscy_read_value(client, FSCSCY_REG_PCILOAD);
538	data->intr_status = fscscy_read_value(client, FSCSCY_REG_INTR_STATE);
539	data->intr_control = fscscy_read_value(client, FSCSCY_REG_INTR_CTRL);
540
541	data->last_updated = jiffies;
542	data->valid = 1;
543	}
544
545	up(&data->update_lock);
546	}
547
548
549	/* The next few functions are the call-back functions of the /proc/sys and
550	sysctl files. Which function is used is defined in the ctl_table in
551	the extra1 field.
552	Each function must return the magnitude (power of 10 to divide the date
553	with) if it is called with operation==SENSORS_PROC_REAL_INFO. It must
554	put a maximum of *nrels elements in results reflecting the data of this
555	file, and set *nrels to the number it actually put in it, if operation==
556	SENSORS_PROC_REAL_READ. Finally, it must get upto *nrels elements from
557	results and write them to the chip, if operations==SENSORS_PROC_REAL_WRITE.
558	Note that on SENSORS_PROC_REAL_READ, I do not check whether results is
559	large enough (by checking the incoming value of *nrels). This is not very
560	good practice, but as long as you put less than about 5 values in results,
561	you can assume it is large enough. */
562	void fscscy_in(struct i2c_client *client, int operation, int ctl_name,
563	int nrels_mag, long results)
564	{
565	struct fscscy_data *data = client->data;
566
567	if (operation == SENSORS_PROC_REAL_INFO)
568	*nrels_mag = 0;
569	else if (operation == SENSORS_PROC_REAL_READ) {
570	fscscy_update_client(client);
571	switch(ctl_name) {
572	case FSCSCY_SYSCTL_REV:
573	results[0] = data->revision ;
574	break;
575	case FSCSCY_SYSCTL_EVENT:
576	results[0] = data->global_event & 0x9f; /* MKN */
577	break;
578	case FSCSCY_SYSCTL_CONTROL:
579	results[0] = data->global_control & 0x19; /* MKN */
580	break;
581	default:
582	printk("fscscy: ctl_name %d not supported\n",
583	ctl_name);
584	*nrels_mag = 0;
585	return;
586	}
587	*nrels_mag = 1;
588	} else if (operation == SENSORS_PROC_REAL_WRITE) {
589	if((ctl_name == FSCSCY_SYSCTL_CONTROL) && (*nrels_mag >= 1)) {
590	data->global_control = (data->global_control & 0x18) \| (results[0] & 0x01); /* MKN */
591	printk("fscscy: writing 0x%02x to global_control\n",
592	data->global_control);
593	fscscy_write_value(client,FSCSCY_REG_CONTROL,
594	data->global_control);
595	}
596	else
597	printk("fscscy: writing to chip not supported\n");
598	}
599	}
600
601	#define TEMP_FROM_REG(val) (val-128)
602
603
604	void fscscy_temp(struct i2c_client *client, int operation, int ctl_name,
605	int nrels_mag, long results)
606	{
607	struct fscscy_data *data = client->data;
608
609	if (operation == SENSORS_PROC_REAL_INFO)
610	*nrels_mag = 0;
611	else if (operation == SENSORS_PROC_REAL_READ) {
612	fscscy_update_client(client);
613	switch(ctl_name) {
614	case FSCSCY_SYSCTL_TEMP0:
615	results[0] = data->temp_status[0] & 0x03;
616	results[1] = TEMP_FROM_REG(data->temp_act[0]);
617	results[2] = TEMP_FROM_REG(data->temp_lim[0]);
618	results[3] = TEMP_FROM_REG(data->temp_min[0]);
619	results[4] = TEMP_FROM_REG(data->temp_max[0]);
620	break;
621	case FSCSCY_SYSCTL_TEMP1:
622	results[0] = data->temp_status[1] & 0x03;
623	results[1] = TEMP_FROM_REG(data->temp_act[1]);
624	results[2] = TEMP_FROM_REG(data->temp_lim[1]);
625	results[3] = TEMP_FROM_REG(data->temp_min[1]);
626	results[4] = TEMP_FROM_REG(data->temp_max[1]);
627	break;
628	case FSCSCY_SYSCTL_TEMP2:
629	results[0] = data->temp_status[2] & 0x03;
630	results[1] = TEMP_FROM_REG(data->temp_act[2]);
631	results[2] = TEMP_FROM_REG(data->temp_lim[2]);
632	results[3] = TEMP_FROM_REG(data->temp_min[2]);
633	results[4] = TEMP_FROM_REG(data->temp_max[2]);
634	break;
635	case FSCSCY_SYSCTL_TEMP3:
636	results[0] = data->temp_status[3] & 0x03;
637	results[1] = TEMP_FROM_REG(data->temp_act[3]);
638	results[2] = TEMP_FROM_REG(data->temp_lim[3]);
639	results[3] = TEMP_FROM_REG(data->temp_min[3]);
640	results[4] = TEMP_FROM_REG(data->temp_max[3]);
641	break;
642	default:
643	printk("fscscy: ctl_name %d not supported\n",
644	ctl_name);
645	*nrels_mag = 0;
646	return;
647	}
648	*nrels_mag = 5;
649	} else if (operation == SENSORS_PROC_REAL_WRITE) {
650	if(*nrels_mag >= 1) {
651	switch(ctl_name) {
652	case FSCSCY_SYSCTL_TEMP0:
653	data->temp_status[0] =
654	(data->temp_status[0] & ~0x02)
655	\| (results[0] & 0x02);
656	printk("fscscy: writing value 0x%02x "
657	"to temp0_status\n",
658	data->temp_status[0]);
659	fscscy_write_value(client,
660	FSCSCY_REG_TEMP0_STATE,
661	data->temp_status[0] & 0x02);
662	break;
663	case FSCSCY_SYSCTL_TEMP1:
664	data->temp_status[1] = (data->temp_status[1] & ~0x02) \| (results[0] & 0x02);
665	printk("fscscy: writing value 0x%02x to temp1_status\n", data->temp_status[1]);
666	fscscy_write_value(client,FSCSCY_REG_TEMP1_STATE,
667	data->temp_status[1] & 0x02);
668	break;
669	case FSCSCY_SYSCTL_TEMP2:
670	data->temp_status[2] = (data->temp_status[2] & ~0x02) \| (results[0] & 0x02);
671	printk("fscscy: writing value 0x%02x to temp2_status\n", data->temp_status[2]);
672	fscscy_write_value(client,FSCSCY_REG_TEMP2_STATE,
673	data->temp_status[2] & 0x02);
674	break;
675	case FSCSCY_SYSCTL_TEMP3:
676	data->temp_status[3] = (data->temp_status[3] & ~0x02) \| (results[0] & 0x02);
677	printk("fscscy: writing value 0x%02x to temp3_status\n", data->temp_status[3]);
678	fscscy_write_value(client,FSCSCY_REG_TEMP3_STATE,
679	data->temp_status[3] & 0x02);
680	break;
681	default:
682	printk("fscscy: ctl_name %d not supported\n",ctl_name);
683	}
684	}
685	else
686	printk("fscscy: writing to chip not supported\n");
687	}
688	}
689
690	#define VOLT_FROM_REG(val,mult) (val*mult/255)
691
692	void fscscy_volt(struct i2c_client *client, int operation, int ctl_name,
693	int nrels_mag, long results)
694	{
695	struct fscscy_data *data = client->data;
696	if (operation == SENSORS_PROC_REAL_INFO)
697	*nrels_mag = 2;
698	else if (operation == SENSORS_PROC_REAL_READ) {
699	fscscy_update_client(client);
700	switch(ctl_name) {
701	case FSCSCY_SYSCTL_VOLT0:
702	results[0] = VOLT_FROM_REG(data->volt[0],1420);
703	results[1] = VOLT_FROM_REG(data->volt_min[0],1420);
704	results[2] = VOLT_FROM_REG(data->volt_max[0],1420);
705	break;
706	case FSCSCY_SYSCTL_VOLT1:
707	results[0] = VOLT_FROM_REG(data->volt[1],660);
708	results[1] = VOLT_FROM_REG(data->volt_min[1],660);
709	results[2] = VOLT_FROM_REG(data->volt_max[1],660);
710	break;
711	case FSCSCY_SYSCTL_VOLT2:
712	results[0] = VOLT_FROM_REG(data->volt[2],330);
713	results[1] = VOLT_FROM_REG(data->volt_min[2],330);
714	results[2] = VOLT_FROM_REG(data->volt_max[2],330);
715	break;
716	default:
717	printk("fscscy: ctl_name %d not supported\n",
718	ctl_name);
719	*nrels_mag = 0;
720	return;
721	}
722	*nrels_mag = 3;
723	} else if (operation == SENSORS_PROC_REAL_WRITE) {
724	printk("fscscy: writing to chip not supported\n");
725	}
726	}
727
728	void fscscy_fan(struct i2c_client *client, int operation, int ctl_name,
729	int nrels_mag, long results)
730	{
731
732	switch(ctl_name) {
733	case FSCSCY_SYSCTL_FAN0:
734	fscscy_fan_internal(client,operation,ctl_name,nrels_mag,results,
735	0,FSCSCY_REG_FAN0_STATE,FSCSCY_REG_FAN0_RPMMIN,
736	FSCSCY_REG_FAN0_RIPPLE);
737	break;
738	case FSCSCY_SYSCTL_FAN1:
739	fscscy_fan_internal(client,operation,ctl_name,nrels_mag,results,
740	1,FSCSCY_REG_FAN1_STATE,FSCSCY_REG_FAN1_RPMMIN,
741	FSCSCY_REG_FAN1_RIPPLE);
742	break;
743	case FSCSCY_SYSCTL_FAN2:
744	fscscy_fan_internal(client,operation,ctl_name,nrels_mag,results,
745	2,FSCSCY_REG_FAN2_STATE,FSCSCY_REG_FAN2_RPMMIN,
746	FSCSCY_REG_FAN2_RIPPLE);
747	break;
748	case FSCSCY_SYSCTL_FAN3:
749	fscscy_fan_internal(client,operation,ctl_name,nrels_mag,results,
750	3,FSCSCY_REG_FAN3_STATE,FSCSCY_REG_FAN3_RPMMIN,
751	FSCSCY_REG_FAN3_RIPPLE);
752	break;
753	case FSCSCY_SYSCTL_FAN4:
754	fscscy_fan_internal(client,operation,ctl_name,nrels_mag,results,
755	4,FSCSCY_REG_FAN4_STATE,FSCSCY_REG_FAN4_RPMMIN,
756	FSCSCY_REG_FAN4_RIPPLE);
757	break;
758	case FSCSCY_SYSCTL_FAN5:
759	fscscy_fan_internal(client,operation,ctl_name,nrels_mag,results,
760	5,FSCSCY_REG_FAN5_STATE,FSCSCY_REG_FAN5_RPMMIN,
761	FSCSCY_REG_FAN5_RIPPLE);
762	break;
763	default:
764	printk("fscscy: illegal fan nr %d\n",ctl_name);
765	}
766	}
767
768	#define RPM_FROM_REG(val) (val*60)
769
770	void fscscy_fan_internal(struct i2c_client *client, int operation, int ctl_name,
771	int nrels_mag, long results, int nr,
772	int reg_state, int reg_min, int reg_ripple )
773	{
774	struct fscscy_data *data = client->data;
775
776	if (operation == SENSORS_PROC_REAL_INFO)
777	*nrels_mag = 0;
778	else if (operation == SENSORS_PROC_REAL_READ) {
779	fscscy_update_client(client);
780	results[0] = data->fan_status[nr] & 0x0f; /* MKN */
781	results[1] = data->fan_rpmmin[nr];
782	results[2] = data->fan_ripple[nr] & 0x03;
783	results[3] = RPM_FROM_REG(data->fan_act[nr]);
784	results[4] = RPM_FROM_REG(data->fan_min[nr]);
785	results[5] = RPM_FROM_REG(data->fan_max[nr]);
786	*nrels_mag = 6;
787	} else if (operation == SENSORS_PROC_REAL_WRITE) {
788	if(*nrels_mag >= 1) {
789	data->fan_status[nr] = (data->fan_status[nr] & 0x0b) \| (results[0] & 0x04); /* MKN */
790	printk("fscscy: writing value 0x%02x to fan%d_status\n",
791	data->fan_status[nr],nr);
792	fscscy_write_value(client,reg_state,
793	data->fan_status[nr]);
794	}
795	if(*nrels_mag >= 2) {
796	if((results[1] & 0xff) == 0) {
797	printk("fscscy: fan%d rpmmin 0 not allowed for safety reasons\n",nr);
798	return;
799	}
800	data->fan_rpmmin[nr] = results[1];
801	printk("fscscy: writing value 0x%02x to fan%d_min\n",
802	data->fan_rpmmin[nr],nr);
803	fscscy_write_value(client,reg_min,
804	data->fan_rpmmin[nr]);
805	}
806	if(*nrels_mag >= 3) {
807	if((results[2] & 0x03) == 0) {
808	printk("fscscy: fan%d ripple 0 is nonsense/not allowed\n",nr);
809	return;
810	}
811	data->fan_ripple[nr] = results[2] & 0x03;
812	printk("fscscy: writing value 0x%02x to fan%d_ripple\n",
813	data->fan_ripple[nr],nr);
814	fscscy_write_value(client,reg_ripple,
815	data->fan_ripple[nr]);
816	}
817	}
818	}
819
820	void fscscy_wdog(struct i2c_client *client, int operation, int ctl_name,
821	int nrels_mag, long results)
822	{
823	struct fscscy_data *data = client->data;
824
825	if (operation == SENSORS_PROC_REAL_INFO)
826	*nrels_mag = 0;
827	else if (operation == SENSORS_PROC_REAL_READ) {
828	fscscy_update_client(client);
829	results[0] = data->watchdog[0] ;
830	results[1] = data->watchdog[1] & 0x02;
831	results[2] = data->watchdog[2] & 0xb0;
832	*nrels_mag = 3;
833	} else if (operation == SENSORS_PROC_REAL_WRITE) {
834	if (*nrels_mag >= 1) {
835	data->watchdog[0] = results[0] & 0xff;
836	printk("fscscy: writing value 0x%02x to wdog_preset\n",
837	data->watchdog[0]);
838	fscscy_write_value(client,FSCSCY_REG_WDOG_PRESET,
839	data->watchdog[0]);
840	}
841	if (*nrels_mag >= 2) {
842	data->watchdog[1] = results[1] & 0x02;
843	printk("fscscy: writing value 0x%02x to wdog_state\n",
844	data->watchdog[1]);
845	fscscy_write_value(client,FSCSCY_REG_WDOG_STATE,
846	data->watchdog[1]);
847	}
848	if (*nrels_mag >= 3) {
849	data->watchdog[2] = results[2] & 0xb0;
850	printk("fscscy: writing value 0x%02x to wdog_control\n",
851	data->watchdog[2]);
852	fscscy_write_value(client,FSCSCY_REG_WDOG_CONTROL,
853	data->watchdog[2]);
854	}
855	}
856	}
857
858	void fscscy_pciload(struct i2c_client *client, int operation, int ctl_name,
859	int nrels_mag, long results)
860	{
861	struct fscscy_data *data = client->data;
862	if (operation == SENSORS_PROC_REAL_INFO)
863	*nrels_mag = 0;
864	else if (operation == SENSORS_PROC_REAL_READ) {
865	fscscy_update_client(client);
866	results[0] = data->pciload;
867	*nrels_mag = 1;
868	} else if (operation == SENSORS_PROC_REAL_WRITE) {
869	printk("fscscy: writing PCILOAD to chip not supported\n");
870	}
871	}
872
873	void fscscy_intrusion(struct i2c_client *client, int operation, int ctl_name,
874	int nrels_mag, long results)
875	{
876	struct fscscy_data *data = client->data;
877
878	if (operation == SENSORS_PROC_REAL_INFO)
879	*nrels_mag = 0;
880	else if (operation == SENSORS_PROC_REAL_READ) {
881	fscscy_update_client(client);
882	results[0] = data->intr_control & 0x80;
883	results[1] = data->intr_status & 0xc0;
884	*nrels_mag = 2;
885	} else if (operation == SENSORS_PROC_REAL_WRITE) {
886	if (*nrels_mag >= 1) {
887	data->intr_control = results[0] & 0x80;
888	printk("fscscy: writing value 0x%02x to intr_control\n",
889	data->intr_control);
890	fscscy_write_value(client,FSCSCY_REG_INTR_CTRL,
891	data->intr_control);
892	}
893	}
894	}
895
896	static int __init sm_fscscy_init(void)
897	{
898	printk("fscscy.o version %s (%s)\n", LM_VERSION, LM_DATE);
899	return i2c_add_driver(&fscscy_driver);
900	}
901
902	static void __exit sm_fscscy_exit(void)
903	{
904	i2c_del_driver(&fscscy_driver);
905	}
906
907
908
909	MODULE_AUTHOR
910	("Martin Knoblauch <mkn@teraport.de> based on work (fscpos) from Hermann Jung <hej@odn.de>");
911	MODULE_DESCRIPTION("fujitsu siemens scylla chip driver");
912
913	module_init(sm_fscscy_init);
914	module_exit(sm_fscscy_exit);

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