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fscscy.c @ 3147

Revision 3147, 33.9 KB (checked in by khali, 8 years ago)
Drop a common comment about limits being set in initialization functions. We no more do that.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`

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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 struct i2c_driver fscscy_driver = {
221	.name = "FSCSCY sensor driver",
222	.id = I2C_DRIVERID_FSCSCY,
223	.flags = I2C_DF_NOTIFY,
224	.attach_adapter = fscscy_attach_adapter,
225	.detach_client = fscscy_detach_client,
226	};
227
228	/* The /proc/sys entries */
229
230	/* -- SENSORS SYSCTL START -- */
231	#define FSCSCY_SYSCTL_VOLT0 1000 /* 12 volt supply */
232	#define FSCSCY_SYSCTL_VOLT1 1001 /* 5 volt supply */
233	#define FSCSCY_SYSCTL_VOLT2 1002 /* batterie voltage*/
234	#define FSCSCY_SYSCTL_FAN0 1101 /* state, min, ripple, actual value fan 0 */
235	#define FSCSCY_SYSCTL_FAN1 1102 /* state, min, ripple, actual value fan 1 */
236	#define FSCSCY_SYSCTL_FAN2 1103 /* state, min, ripple, actual value fan 2 */
237	#define FSCSCY_SYSCTL_FAN3 1104 /* state, min, ripple, actual value fan 3 */
238	#define FSCSCY_SYSCTL_FAN4 1105 /* state, min, ripple, actual value fan 4 */
239	#define FSCSCY_SYSCTL_FAN5 1106 /* state, min, ripple, actual value fan 5 */
240	#define FSCSCY_SYSCTL_TEMP0 1201 /* state and value of sensor 0, cpu die */
241	#define FSCSCY_SYSCTL_TEMP1 1202 /* state and value of sensor 1, motherboard */
242	#define FSCSCY_SYSCTL_TEMP2 1203 /* state and value of sensor 2, chassis */
243	#define FSCSCY_SYSCTL_TEMP3 1204 /* state and value of sensor 3, chassis */
244	#define FSCSCY_SYSCTL_REV 2000 /* Revision */
245	#define FSCSCY_SYSCTL_EVENT 2001 /* global event status */
246	#define FSCSCY_SYSCTL_CONTROL 2002 /* global control byte */
247	#define FSCSCY_SYSCTL_WDOG 2003 /* state, min, ripple, actual value fan 2 */
248	#define FSCSCY_SYSCTL_PCILOAD 2004 /* PCILoad value */
249	#define FSCSCY_SYSCTL_INTRUSION 2005 /* state, control for intrusion sensor */
250
251	/* -- SENSORS SYSCTL END -- */
252
253	/* These files are created for each detected FSCSCY. This is just a template;
254	though at first sight, you might think we could use a statically
255	allocated list, we need some way to get back to the parent - which
256	is done through one of the 'extra' fields which are initialized
257	when a new copy is allocated. */
258	static ctl_table fscscy_dir_table_template[] = {
259	{FSCSCY_SYSCTL_REV, "rev", NULL, 0, 0444, NULL, &i2c_proc_real,
260	&i2c_sysctl_real, NULL, &fscscy_in},
261	{FSCSCY_SYSCTL_EVENT, "alarms", NULL, 0, 0444, NULL, &i2c_proc_real,
262	&i2c_sysctl_real, NULL, &fscscy_in},
263	{FSCSCY_SYSCTL_CONTROL, "control", NULL, 0, 0644, NULL, &i2c_proc_real,
264	&i2c_sysctl_real, NULL, &fscscy_in},
265	{FSCSCY_SYSCTL_TEMP0, "temp1", NULL, 0, 0644, NULL, &i2c_proc_real,
266	&i2c_sysctl_real, NULL, &fscscy_temp},
267	{FSCSCY_SYSCTL_TEMP1, "temp2", NULL, 0, 0644, NULL, &i2c_proc_real,
268	&i2c_sysctl_real, NULL, &fscscy_temp},
269	{FSCSCY_SYSCTL_TEMP2, "temp3", NULL, 0, 0644, NULL, &i2c_proc_real,
270	&i2c_sysctl_real, NULL, &fscscy_temp},
271	{FSCSCY_SYSCTL_TEMP3, "temp4", NULL, 0, 0644, NULL, &i2c_proc_real,
272	&i2c_sysctl_real, NULL, &fscscy_temp},
273	{FSCSCY_SYSCTL_VOLT0, "in0", NULL, 0, 0444, NULL, &i2c_proc_real,
274	&i2c_sysctl_real, NULL, &fscscy_volt},
275	{FSCSCY_SYSCTL_VOLT1, "in1", NULL, 0, 0444, NULL, &i2c_proc_real,
276	&i2c_sysctl_real, NULL, &fscscy_volt},
277	{FSCSCY_SYSCTL_VOLT2, "in2", NULL, 0, 0444, NULL, &i2c_proc_real,
278	&i2c_sysctl_real, NULL, &fscscy_volt},
279	{FSCSCY_SYSCTL_FAN0, "fan1", NULL, 0, 0644, NULL, &i2c_proc_real,
280	&i2c_sysctl_real, NULL, &fscscy_fan},
281	{FSCSCY_SYSCTL_FAN1, "fan2", NULL, 0, 0644, NULL, &i2c_proc_real,
282	&i2c_sysctl_real, NULL, &fscscy_fan},
283	{FSCSCY_SYSCTL_FAN2, "fan3", NULL, 0, 0644, NULL, &i2c_proc_real,
284	&i2c_sysctl_real, NULL, &fscscy_fan},
285	{FSCSCY_SYSCTL_FAN3, "fan4", NULL, 0, 0644, NULL, &i2c_proc_real,
286	&i2c_sysctl_real, NULL, &fscscy_fan},
287	{FSCSCY_SYSCTL_FAN4, "fan5", NULL, 0, 0644, NULL, &i2c_proc_real,
288	&i2c_sysctl_real, NULL, &fscscy_fan},
289	{FSCSCY_SYSCTL_FAN5, "fan6", NULL, 0, 0644, NULL, &i2c_proc_real,
290	&i2c_sysctl_real, NULL, &fscscy_fan},
291	{FSCSCY_SYSCTL_WDOG, "wdog", NULL, 0, 0644, NULL, &i2c_proc_real,
292	&i2c_sysctl_real, NULL, &fscscy_wdog},
293	{FSCSCY_SYSCTL_PCILOAD, "pciload", NULL, 0, 0444, NULL, &i2c_proc_real,
294	&i2c_sysctl_real, NULL, &fscscy_pciload},
295	{FSCSCY_SYSCTL_INTRUSION, "intrusion", NULL, 0, 0644, NULL, &i2c_proc_real,
296	&i2c_sysctl_real, NULL, &fscscy_intrusion},
297	{0}
298	};
299
300	static int fscscy_attach_adapter(struct i2c_adapter *adapter)
301	{
302	return i2c_detect(adapter, &addr_data, fscscy_detect);
303	}
304
305	int fscscy_detect(struct i2c_adapter *adapter, int address,
306	unsigned short flags, int kind)
307	{
308	int i;
309	struct i2c_client *new_client;
310	struct fscscy_data *data;
311	int err = 0;
312	const char type_name, client_name;
313
314	/* Make sure we aren't probing the ISA bus!! This is just a safety check
315	at this moment; i2c_detect really won't call us. */
316	#ifdef DEBUG
317	if (i2c_is_isa_adapter(adapter)) {
318	printk
319	("fscscy.o: fscscy_detect called for an ISA bus adapter?!?\n");
320	return 0;
321	}
322	#endif
323
324	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
325	goto ERROR0;
326
327	/* OK. For now, we presume we have a valid client. We now create the
328	client structure, even though we cannot fill it completely yet.
329	But it allows us to access fscscy_{read,write}_value. */
330	if (!(data = kmalloc(sizeof(struct fscscy_data), GFP_KERNEL))) {
331	err = -ENOMEM;
332	goto ERROR0;
333	}
334
335	new_client = &data->client;
336	new_client->addr = address;
337	new_client->data = data;
338	new_client->adapter = adapter;
339	new_client->driver = &fscscy_driver;
340	new_client->flags = 0;
341
342	/* Do the remaining detection unless force or force_fscscy parameter */
343	if (kind < 0) {
344	if (fscscy_read_value(new_client, FSCSCY_REG_IDENT_0) != 0x53)
345	goto ERROR1;
346	if (fscscy_read_value(new_client, FSCSCY_REG_IDENT_1) != 0x43)
347	goto ERROR1;
348	if (fscscy_read_value(new_client, FSCSCY_REG_IDENT_2) != 0x59)
349	goto ERROR1;
350	}
351
352	kind = fscscy;
353
354	type_name = "fscscy";
355	client_name = "fsc scylla chip";
356
357	/* Fill in the remaining client fields and put it into the global list */
358	strcpy(new_client->name, client_name);
359	data->valid = 0;
360	init_MUTEX(&data->update_lock);
361
362	/* Tell the I2C layer a new client has arrived */
363	if ((err = i2c_attach_client(new_client)))
364	goto ERROR3;
365
366	/* Register a new directory entry with module sensors */
367	if ((i = i2c_register_entry(new_client, type_name,
368	fscscy_dir_table_template,
369	THIS_MODULE)) < 0) {
370	err = i;
371	goto ERROR4;
372	}
373	data->sysctl_id = i;
374
375	fscscy_init_client(new_client);
376	return 0;
377
378	/* OK, this is not exactly good programming practice, usually. But it is
379	very code-efficient in this case. */
380	ERROR4:
381	i2c_detach_client(new_client);
382	ERROR3:
383	ERROR1:
384	kfree(data);
385	ERROR0:
386	return err;
387	}
388
389	static int fscscy_detach_client(struct i2c_client *client)
390	{
391	int err;
392
393	i2c_deregister_entry(((struct fscscy_data *) (client->data))->
394	sysctl_id);
395
396	if ((err = i2c_detach_client(client))) {
397	printk
398	("fscscy.o: Client deregistration failed, client not detached.\n");
399	return err;
400	}
401
402	kfree(client->data);
403
404	return 0;
405	}
406
407	static int fscscy_read_value(struct i2c_client *client, u8 reg)
408	{
409	#ifdef DEBUG
410	printk("fscscy: read reg 0x%02x\n",reg);
411	#endif
412	return i2c_smbus_read_byte_data(client, reg);
413	}
414
415	static int fscscy_write_value(struct i2c_client *client, u8 reg, u8 value)
416	{
417	#ifdef DEBUG
418	printk("fscscy: write reg 0x%02x, val 0x%02x\n",reg, value);
419	#endif
420	return i2c_smbus_write_byte_data(client, reg, value);
421	}
422
423	/* Called when we have found a new FSCSCY. */
424	static void fscscy_init_client(struct i2c_client *client)
425	{
426	struct fscscy_data *data = client->data;
427
428	/* read revision from chip */
429	data->revision = fscscy_read_value(client,FSCSCY_REG_REVISION);
430
431	/* Initialize min/max values from chip */
432	data->fan_min[0] = data->fan_max[0] = fscscy_read_value(client, FSCSCY_REG_FAN0_ACT);
433	data->fan_min[1] = data->fan_max[1] = fscscy_read_value(client, FSCSCY_REG_FAN1_ACT);
434	data->fan_min[2] = data->fan_max[2] = fscscy_read_value(client, FSCSCY_REG_FAN2_ACT);
435	data->fan_min[3] = data->fan_max[3] = fscscy_read_value(client, FSCSCY_REG_FAN3_ACT);
436	data->fan_min[4] = data->fan_max[4] = fscscy_read_value(client, FSCSCY_REG_FAN4_ACT);
437	data->fan_min[4] = data->fan_max[5] = fscscy_read_value(client, FSCSCY_REG_FAN5_ACT);
438	data->temp_min[0] = data->temp_max[0] = fscscy_read_value(client, FSCSCY_REG_TEMP0_ACT);
439	data->temp_min[1] = data->temp_max[1] = fscscy_read_value(client, FSCSCY_REG_TEMP1_ACT);
440	data->temp_min[2] = data->temp_max[2] = fscscy_read_value(client, FSCSCY_REG_TEMP2_ACT);
441	data->temp_min[3] = data->temp_max[3] = fscscy_read_value(client, FSCSCY_REG_TEMP3_ACT);
442	data->volt_min[0] = data->volt_max[0] = fscscy_read_value(client, FSCSCY_REG_VOLT_12);
443	data->volt_min[1] = data->volt_max[1] = fscscy_read_value(client, FSCSCY_REG_VOLT_5);
444	data->volt_min[2] = data->volt_max[2] = fscscy_read_value(client, FSCSCY_REG_VOLT_BATT);
445	}
446
447	static void fscscy_update_client(struct i2c_client *client)
448	{
449	struct fscscy_data *data = client->data;
450
451	down(&data->update_lock);
452
453	if ((jiffies - data->last_updated > 2 * HZ) \|\|
454	(jiffies < data->last_updated) \|\| !data->valid) {
455
456	#ifdef DEBUG
457	printk("Starting fscscy update\n");
458	#endif
459	data->temp_act[0] = fscscy_read_value(client, FSCSCY_REG_TEMP0_ACT);
460	if (data->temp_min[0] > data->temp_act[0]) data->temp_min[0] = data->temp_act[0];
461	if (data->temp_max[0] < data->temp_act[0]) data->temp_max[0] = data->temp_act[0];
462	data->temp_act[1] = fscscy_read_value(client, FSCSCY_REG_TEMP1_ACT);
463	if (data->temp_min[1] > data->temp_act[1]) data->temp_min[1] = data->temp_act[1];
464	if (data->temp_max[1] < data->temp_act[1]) data->temp_max[1] = data->temp_act[1];
465	data->temp_act[2] = fscscy_read_value(client, FSCSCY_REG_TEMP2_ACT);
466	if (data->temp_min[2] > data->temp_act[2]) data->temp_min[2] = data->temp_act[2];
467	if (data->temp_max[2] < data->temp_act[2]) data->temp_max[2] = data->temp_act[2];
468	data->temp_act[3] = fscscy_read_value(client, FSCSCY_REG_TEMP3_ACT);
469	if (data->temp_min[3] > data->temp_act[3]) data->temp_min[3] = data->temp_act[3];
470	if (data->temp_max[3] < data->temp_act[3]) data->temp_max[3] = data->temp_act[3];
471	data->temp_status[0] = fscscy_read_value(client, FSCSCY_REG_TEMP0_STATE);
472	data->temp_status[1] = fscscy_read_value(client, FSCSCY_REG_TEMP1_STATE);
473	data->temp_status[2] = fscscy_read_value(client, FSCSCY_REG_TEMP2_STATE);
474	data->temp_status[3] = fscscy_read_value(client, FSCSCY_REG_TEMP3_STATE);
475	data->temp_lim[0] = fscscy_read_value(client, FSCSCY_REG_TEMP0_LIM);
476	data->temp_lim[1] = fscscy_read_value(client, FSCSCY_REG_TEMP1_LIM);
477	data->temp_lim[2] = fscscy_read_value(client, FSCSCY_REG_TEMP2_LIM);
478	data->temp_lim[3] = fscscy_read_value(client, FSCSCY_REG_TEMP3_LIM);
479
480	data->volt[0] = fscscy_read_value(client, FSCSCY_REG_VOLT_12);
481	if (data->volt_min[0] > data->volt[0]) data->volt_min[0] = data->volt[0];
482	if (data->volt_max[0] < data->volt[0]) data->volt_max[0] = data->volt[0];
483	data->volt[1] = fscscy_read_value(client, FSCSCY_REG_VOLT_5);
484	if (data->volt_min[1] > data->volt[1]) data->volt_min[1] = data->volt[1];
485	if (data->volt_max[1] < data->volt[1]) data->volt_max[1] = data->volt[1];
486	data->volt[2] = fscscy_read_value(client, FSCSCY_REG_VOLT_BATT);
487	if (data->volt_min[2] > data->volt[2]) data->volt_min[2] = data->volt[2];
488	if (data->volt_max[2] < data->volt[2]) data->volt_max[2] = data->volt[2];
489
490	data->fan_act[0] = fscscy_read_value(client, FSCSCY_REG_FAN0_ACT);
491	if (data->fan_min[0] > data->fan_act[0]) data->fan_min[0] = data->fan_act[0];
492	if (data->fan_max[0] < data->fan_act[0]) data->fan_max[0] = data->fan_act[0];
493	data->fan_act[1] = fscscy_read_value(client, FSCSCY_REG_FAN1_ACT);
494	if (data->fan_min[1] > data->fan_act[1]) data->fan_min[1] = data->fan_act[1];
495	if (data->fan_max[1] < data->fan_act[1]) data->fan_max[1] = data->fan_act[1];
496	data->fan_act[2] = fscscy_read_value(client, FSCSCY_REG_FAN2_ACT);
497	if (data->fan_min[2] > data->fan_act[2]) data->fan_min[2] = data->fan_act[2];
498	if (data->fan_max[2] < data->fan_act[2]) data->fan_max[2] = data->fan_act[2];
499	data->fan_act[3] = fscscy_read_value(client, FSCSCY_REG_FAN3_ACT);
500	if (data->fan_min[3] > data->fan_act[3]) data->fan_min[3] = data->fan_act[3];
501	if (data->fan_max[3] < data->fan_act[3]) data->fan_max[3] = data->fan_act[3];
502	data->fan_act[4] = fscscy_read_value(client, FSCSCY_REG_FAN4_ACT);
503	if (data->fan_min[4] > data->fan_act[4]) data->fan_min[4] = data->fan_act[4];
504	if (data->fan_max[4] < data->fan_act[4]) data->fan_max[4] = data->fan_act[4];
505	data->fan_act[5] = fscscy_read_value(client, FSCSCY_REG_FAN5_ACT);
506	if (data->fan_min[5] > data->fan_act[5]) data->fan_min[5] = data->fan_act[5];
507	if (data->fan_max[5] < data->fan_act[5]) data->fan_max[5] = data->fan_act[5];
508	data->fan_status[0] = fscscy_read_value(client, FSCSCY_REG_FAN0_STATE);
509	data->fan_status[1] = fscscy_read_value(client, FSCSCY_REG_FAN1_STATE);
510	data->fan_status[2] = fscscy_read_value(client, FSCSCY_REG_FAN2_STATE);
511	data->fan_status[3] = fscscy_read_value(client, FSCSCY_REG_FAN3_STATE);
512	data->fan_status[4] = fscscy_read_value(client, FSCSCY_REG_FAN4_STATE);
513	data->fan_status[5] = fscscy_read_value(client, FSCSCY_REG_FAN5_STATE);
514	data->fan_rpmmin[0] = fscscy_read_value(client, FSCSCY_REG_FAN0_RPMMIN);
515	data->fan_rpmmin[1] = fscscy_read_value(client, FSCSCY_REG_FAN1_RPMMIN);
516	data->fan_rpmmin[2] = fscscy_read_value(client, FSCSCY_REG_FAN2_RPMMIN);
517	data->fan_rpmmin[3] = fscscy_read_value(client, FSCSCY_REG_FAN3_RPMMIN);
518	data->fan_rpmmin[4] = fscscy_read_value(client, FSCSCY_REG_FAN4_RPMMIN);
519	data->fan_rpmmin[5] = fscscy_read_value(client, FSCSCY_REG_FAN5_RPMMIN);
520	data->fan_ripple[0] = fscscy_read_value(client, FSCSCY_REG_FAN0_RIPPLE);
521	data->fan_ripple[1] = fscscy_read_value(client, FSCSCY_REG_FAN1_RIPPLE);
522	data->fan_ripple[2] = fscscy_read_value(client, FSCSCY_REG_FAN2_RIPPLE);
523	data->fan_ripple[3] = fscscy_read_value(client, FSCSCY_REG_FAN3_RIPPLE);
524	data->fan_ripple[4] = fscscy_read_value(client, FSCSCY_REG_FAN4_RIPPLE);
525	data->fan_ripple[5] = fscscy_read_value(client, FSCSCY_REG_FAN5_RIPPLE);
526
527	data->watchdog[0] = fscscy_read_value(client, FSCSCY_REG_WDOG_PRESET);
528	data->watchdog[1] = fscscy_read_value(client, FSCSCY_REG_WDOG_STATE);
529	data->watchdog[2] = fscscy_read_value(client, FSCSCY_REG_WDOG_CONTROL);
530
531	data->global_event = fscscy_read_value(client, FSCSCY_REG_EVENT_STATE);
532	data->global_control = fscscy_read_value(client, FSCSCY_REG_CONTROL);
533	data->pciload = fscscy_read_value(client, FSCSCY_REG_PCILOAD);
534	data->intr_status = fscscy_read_value(client, FSCSCY_REG_INTR_STATE);
535	data->intr_control = fscscy_read_value(client, FSCSCY_REG_INTR_CTRL);
536
537	data->last_updated = jiffies;
538	data->valid = 1;
539	}
540
541	up(&data->update_lock);
542	}
543
544
545	/* The next few functions are the call-back functions of the /proc/sys and
546	sysctl files. Which function is used is defined in the ctl_table in
547	the extra1 field.
548	Each function must return the magnitude (power of 10 to divide the date
549	with) if it is called with operation==SENSORS_PROC_REAL_INFO. It must
550	put a maximum of *nrels elements in results reflecting the data of this
551	file, and set *nrels to the number it actually put in it, if operation==
552	SENSORS_PROC_REAL_READ. Finally, it must get upto *nrels elements from
553	results and write them to the chip, if operations==SENSORS_PROC_REAL_WRITE.
554	Note that on SENSORS_PROC_REAL_READ, I do not check whether results is
555	large enough (by checking the incoming value of *nrels). This is not very
556	good practice, but as long as you put less than about 5 values in results,
557	you can assume it is large enough. */
558	void fscscy_in(struct i2c_client *client, int operation, int ctl_name,
559	int nrels_mag, long results)
560	{
561	struct fscscy_data *data = client->data;
562
563	if (operation == SENSORS_PROC_REAL_INFO)
564	*nrels_mag = 0;
565	else if (operation == SENSORS_PROC_REAL_READ) {
566	fscscy_update_client(client);
567	switch(ctl_name) {
568	case FSCSCY_SYSCTL_REV:
569	results[0] = data->revision ;
570	break;
571	case FSCSCY_SYSCTL_EVENT:
572	results[0] = data->global_event & 0x9f; /* MKN */
573	break;
574	case FSCSCY_SYSCTL_CONTROL:
575	results[0] = data->global_control & 0x19; /* MKN */
576	break;
577	default:
578	printk("fscscy: ctl_name %d not supported\n",
579	ctl_name);
580	*nrels_mag = 0;
581	return;
582	}
583	*nrels_mag = 1;
584	} else if (operation == SENSORS_PROC_REAL_WRITE) {
585	if((ctl_name == FSCSCY_SYSCTL_CONTROL) && (*nrels_mag >= 1)) {
586	data->global_control = (data->global_control & 0x18) \| (results[0] & 0x01); /* MKN */
587	printk("fscscy: writing 0x%02x to global_control\n",
588	data->global_control);
589	fscscy_write_value(client,FSCSCY_REG_CONTROL,
590	data->global_control);
591	}
592	else
593	printk("fscscy: writing to chip not supported\n");
594	}
595	}
596
597	#define TEMP_FROM_REG(val) (val-128)
598
599
600	void fscscy_temp(struct i2c_client *client, int operation, int ctl_name,
601	int nrels_mag, long results)
602	{
603	struct fscscy_data *data = client->data;
604
605	if (operation == SENSORS_PROC_REAL_INFO)
606	*nrels_mag = 0;
607	else if (operation == SENSORS_PROC_REAL_READ) {
608	fscscy_update_client(client);
609	switch(ctl_name) {
610	case FSCSCY_SYSCTL_TEMP0:
611	results[0] = data->temp_status[0] & 0x03;
612	results[1] = TEMP_FROM_REG(data->temp_act[0]);
613	results[2] = TEMP_FROM_REG(data->temp_lim[0]);
614	results[3] = TEMP_FROM_REG(data->temp_min[0]);
615	results[4] = TEMP_FROM_REG(data->temp_max[0]);
616	break;
617	case FSCSCY_SYSCTL_TEMP1:
618	results[0] = data->temp_status[1] & 0x03;
619	results[1] = TEMP_FROM_REG(data->temp_act[1]);
620	results[2] = TEMP_FROM_REG(data->temp_lim[1]);
621	results[3] = TEMP_FROM_REG(data->temp_min[1]);
622	results[4] = TEMP_FROM_REG(data->temp_max[1]);
623	break;
624	case FSCSCY_SYSCTL_TEMP2:
625	results[0] = data->temp_status[2] & 0x03;
626	results[1] = TEMP_FROM_REG(data->temp_act[2]);
627	results[2] = TEMP_FROM_REG(data->temp_lim[2]);
628	results[3] = TEMP_FROM_REG(data->temp_min[2]);
629	results[4] = TEMP_FROM_REG(data->temp_max[2]);
630	break;
631	case FSCSCY_SYSCTL_TEMP3:
632	results[0] = data->temp_status[3] & 0x03;
633	results[1] = TEMP_FROM_REG(data->temp_act[3]);
634	results[2] = TEMP_FROM_REG(data->temp_lim[3]);
635	results[3] = TEMP_FROM_REG(data->temp_min[3]);
636	results[4] = TEMP_FROM_REG(data->temp_max[3]);
637	break;
638	default:
639	printk("fscscy: ctl_name %d not supported\n",
640	ctl_name);
641	*nrels_mag = 0;
642	return;
643	}
644	*nrels_mag = 5;
645	} else if (operation == SENSORS_PROC_REAL_WRITE) {
646	if(*nrels_mag >= 1) {
647	switch(ctl_name) {
648	case FSCSCY_SYSCTL_TEMP0:
649	data->temp_status[0] =
650	(data->temp_status[0] & ~0x02)
651	\| (results[0] & 0x02);
652	printk("fscscy: writing value 0x%02x "
653	"to temp0_status\n",
654	data->temp_status[0]);
655	fscscy_write_value(client,
656	FSCSCY_REG_TEMP0_STATE,
657	data->temp_status[0] & 0x02);
658	break;
659	case FSCSCY_SYSCTL_TEMP1:
660	data->temp_status[1] = (data->temp_status[1] & ~0x02) \| (results[0] & 0x02);
661	printk("fscscy: writing value 0x%02x to temp1_status\n", data->temp_status[1]);
662	fscscy_write_value(client,FSCSCY_REG_TEMP1_STATE,
663	data->temp_status[1] & 0x02);
664	break;
665	case FSCSCY_SYSCTL_TEMP2:
666	data->temp_status[2] = (data->temp_status[2] & ~0x02) \| (results[0] & 0x02);
667	printk("fscscy: writing value 0x%02x to temp2_status\n", data->temp_status[2]);
668	fscscy_write_value(client,FSCSCY_REG_TEMP2_STATE,
669	data->temp_status[2] & 0x02);
670	break;
671	case FSCSCY_SYSCTL_TEMP3:
672	data->temp_status[3] = (data->temp_status[3] & ~0x02) \| (results[0] & 0x02);
673	printk("fscscy: writing value 0x%02x to temp3_status\n", data->temp_status[3]);
674	fscscy_write_value(client,FSCSCY_REG_TEMP3_STATE,
675	data->temp_status[3] & 0x02);
676	break;
677	default:
678	printk("fscscy: ctl_name %d not supported\n",ctl_name);
679	}
680	}
681	else
682	printk("fscscy: writing to chip not supported\n");
683	}
684	}
685
686	#define VOLT_FROM_REG(val,mult) (val*mult/255)
687
688	void fscscy_volt(struct i2c_client *client, int operation, int ctl_name,
689	int nrels_mag, long results)
690	{
691	struct fscscy_data *data = client->data;
692	if (operation == SENSORS_PROC_REAL_INFO)
693	*nrels_mag = 2;
694	else if (operation == SENSORS_PROC_REAL_READ) {
695	fscscy_update_client(client);
696	switch(ctl_name) {
697	case FSCSCY_SYSCTL_VOLT0:
698	results[0] = VOLT_FROM_REG(data->volt[0],1420);
699	results[1] = VOLT_FROM_REG(data->volt_min[0],1420);
700	results[2] = VOLT_FROM_REG(data->volt_max[0],1420);
701	break;
702	case FSCSCY_SYSCTL_VOLT1:
703	results[0] = VOLT_FROM_REG(data->volt[1],660);
704	results[1] = VOLT_FROM_REG(data->volt_min[1],660);
705	results[2] = VOLT_FROM_REG(data->volt_max[1],660);
706	break;
707	case FSCSCY_SYSCTL_VOLT2:
708	results[0] = VOLT_FROM_REG(data->volt[2],330);
709	results[1] = VOLT_FROM_REG(data->volt_min[2],330);
710	results[2] = VOLT_FROM_REG(data->volt_max[2],330);
711	break;
712	default:
713	printk("fscscy: ctl_name %d not supported\n",
714	ctl_name);
715	*nrels_mag = 0;
716	return;
717	}
718	*nrels_mag = 3;
719	} else if (operation == SENSORS_PROC_REAL_WRITE) {
720	printk("fscscy: writing to chip not supported\n");
721	}
722	}
723
724	void fscscy_fan(struct i2c_client *client, int operation, int ctl_name,
725	int nrels_mag, long results)
726	{
727
728	switch(ctl_name) {
729	case FSCSCY_SYSCTL_FAN0:
730	fscscy_fan_internal(client,operation,ctl_name,nrels_mag,results,
731	0,FSCSCY_REG_FAN0_STATE,FSCSCY_REG_FAN0_RPMMIN,
732	FSCSCY_REG_FAN0_RIPPLE);
733	break;
734	case FSCSCY_SYSCTL_FAN1:
735	fscscy_fan_internal(client,operation,ctl_name,nrels_mag,results,
736	1,FSCSCY_REG_FAN1_STATE,FSCSCY_REG_FAN1_RPMMIN,
737	FSCSCY_REG_FAN1_RIPPLE);
738	break;
739	case FSCSCY_SYSCTL_FAN2:
740	fscscy_fan_internal(client,operation,ctl_name,nrels_mag,results,
741	2,FSCSCY_REG_FAN2_STATE,FSCSCY_REG_FAN2_RPMMIN,
742	FSCSCY_REG_FAN2_RIPPLE);
743	break;
744	case FSCSCY_SYSCTL_FAN3:
745	fscscy_fan_internal(client,operation,ctl_name,nrels_mag,results,
746	3,FSCSCY_REG_FAN3_STATE,FSCSCY_REG_FAN3_RPMMIN,
747	FSCSCY_REG_FAN3_RIPPLE);
748	break;
749	case FSCSCY_SYSCTL_FAN4:
750	fscscy_fan_internal(client,operation,ctl_name,nrels_mag,results,
751	4,FSCSCY_REG_FAN4_STATE,FSCSCY_REG_FAN4_RPMMIN,
752	FSCSCY_REG_FAN4_RIPPLE);
753	break;
754	case FSCSCY_SYSCTL_FAN5:
755	fscscy_fan_internal(client,operation,ctl_name,nrels_mag,results,
756	5,FSCSCY_REG_FAN5_STATE,FSCSCY_REG_FAN5_RPMMIN,
757	FSCSCY_REG_FAN5_RIPPLE);
758	break;
759	default:
760	printk("fscscy: illegal fan nr %d\n",ctl_name);
761	}
762	}
763
764	#define RPM_FROM_REG(val) (val*60)
765
766	void fscscy_fan_internal(struct i2c_client *client, int operation, int ctl_name,
767	int nrels_mag, long results, int nr,
768	int reg_state, int reg_min, int reg_ripple )
769	{
770	struct fscscy_data *data = client->data;
771
772	if (operation == SENSORS_PROC_REAL_INFO)
773	*nrels_mag = 0;
774	else if (operation == SENSORS_PROC_REAL_READ) {
775	fscscy_update_client(client);
776	results[0] = data->fan_status[nr] & 0x0f; /* MKN */
777	results[1] = data->fan_rpmmin[nr];
778	results[2] = data->fan_ripple[nr] & 0x03;
779	results[3] = RPM_FROM_REG(data->fan_act[nr]);
780	results[4] = RPM_FROM_REG(data->fan_min[nr]);
781	results[5] = RPM_FROM_REG(data->fan_max[nr]);
782	*nrels_mag = 6;
783	} else if (operation == SENSORS_PROC_REAL_WRITE) {
784	if(*nrels_mag >= 1) {
785	data->fan_status[nr] = (data->fan_status[nr] & 0x0b) \| (results[0] & 0x04); /* MKN */
786	printk("fscscy: writing value 0x%02x to fan%d_status\n",
787	data->fan_status[nr],nr);
788	fscscy_write_value(client,reg_state,
789	data->fan_status[nr]);
790	}
791	if(*nrels_mag >= 2) {
792	if((results[1] & 0xff) == 0) {
793	printk("fscscy: fan%d rpmmin 0 not allowed for safety reasons\n",nr);
794	return;
795	}
796	data->fan_rpmmin[nr] = results[1];
797	printk("fscscy: writing value 0x%02x to fan%d_min\n",
798	data->fan_rpmmin[nr],nr);
799	fscscy_write_value(client,reg_min,
800	data->fan_rpmmin[nr]);
801	}
802	if(*nrels_mag >= 3) {
803	if((results[2] & 0x03) == 0) {
804	printk("fscscy: fan%d ripple 0 is nonsense/not allowed\n",nr);
805	return;
806	}
807	data->fan_ripple[nr] = results[2] & 0x03;
808	printk("fscscy: writing value 0x%02x to fan%d_ripple\n",
809	data->fan_ripple[nr],nr);
810	fscscy_write_value(client,reg_ripple,
811	data->fan_ripple[nr]);
812	}
813	}
814	}
815
816	void fscscy_wdog(struct i2c_client *client, int operation, int ctl_name,
817	int nrels_mag, long results)
818	{
819	struct fscscy_data *data = client->data;
820
821	if (operation == SENSORS_PROC_REAL_INFO)
822	*nrels_mag = 0;
823	else if (operation == SENSORS_PROC_REAL_READ) {
824	fscscy_update_client(client);
825	results[0] = data->watchdog[0] ;
826	results[1] = data->watchdog[1] & 0x02;
827	results[2] = data->watchdog[2] & 0xb0;
828	*nrels_mag = 3;
829	} else if (operation == SENSORS_PROC_REAL_WRITE) {
830	if (*nrels_mag >= 1) {
831	data->watchdog[0] = results[0] & 0xff;
832	printk("fscscy: writing value 0x%02x to wdog_preset\n",
833	data->watchdog[0]);
834	fscscy_write_value(client,FSCSCY_REG_WDOG_PRESET,
835	data->watchdog[0]);
836	}
837	if (*nrels_mag >= 2) {
838	data->watchdog[1] = results[1] & 0x02;
839	printk("fscscy: writing value 0x%02x to wdog_state\n",
840	data->watchdog[1]);
841	fscscy_write_value(client,FSCSCY_REG_WDOG_STATE,
842	data->watchdog[1]);
843	}
844	if (*nrels_mag >= 3) {
845	data->watchdog[2] = results[2] & 0xb0;
846	printk("fscscy: writing value 0x%02x to wdog_control\n",
847	data->watchdog[2]);
848	fscscy_write_value(client,FSCSCY_REG_WDOG_CONTROL,
849	data->watchdog[2]);
850	}
851	}
852	}
853
854	void fscscy_pciload(struct i2c_client *client, int operation, int ctl_name,
855	int nrels_mag, long results)
856	{
857	struct fscscy_data *data = client->data;
858	if (operation == SENSORS_PROC_REAL_INFO)
859	*nrels_mag = 0;
860	else if (operation == SENSORS_PROC_REAL_READ) {
861	fscscy_update_client(client);
862	results[0] = data->pciload;
863	*nrels_mag = 1;
864	} else if (operation == SENSORS_PROC_REAL_WRITE) {
865	printk("fscscy: writing PCILOAD to chip not supported\n");
866	}
867	}
868
869	void fscscy_intrusion(struct i2c_client *client, int operation, int ctl_name,
870	int nrels_mag, long results)
871	{
872	struct fscscy_data *data = client->data;
873
874	if (operation == SENSORS_PROC_REAL_INFO)
875	*nrels_mag = 0;
876	else if (operation == SENSORS_PROC_REAL_READ) {
877	fscscy_update_client(client);
878	results[0] = data->intr_control & 0x80;
879	results[1] = data->intr_status & 0xc0;
880	*nrels_mag = 2;
881	} else if (operation == SENSORS_PROC_REAL_WRITE) {
882	if (*nrels_mag >= 1) {
883	data->intr_control = results[0] & 0x80;
884	printk("fscscy: writing value 0x%02x to intr_control\n",
885	data->intr_control);
886	fscscy_write_value(client,FSCSCY_REG_INTR_CTRL,
887	data->intr_control);
888	}
889	}
890	}
891
892	static int __init sm_fscscy_init(void)
893	{
894	printk("fscscy.o version %s (%s)\n", LM_VERSION, LM_DATE);
895	return i2c_add_driver(&fscscy_driver);
896	}
897
898	static void __exit sm_fscscy_exit(void)
899	{
900	i2c_del_driver(&fscscy_driver);
901	}
902
903
904
905	MODULE_AUTHOR
906	("Martin Knoblauch <mkn@teraport.de> based on work (fscpos) from Hermann Jung <hej@odn.de>");
907	MODULE_DESCRIPTION("fujitsu siemens scylla chip driver");
908
909	module_init(sm_fscscy_init);
910	module_exit(sm_fscscy_exit);

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