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-rw-r--r--drivers/i2c/chips/sis5595.c816
1 files changed, 816 insertions, 0 deletions
diff --git a/drivers/i2c/chips/sis5595.c b/drivers/i2c/chips/sis5595.c
new file mode 100644
index 000000000000..7ea84532df32
--- /dev/null
+++ b/drivers/i2c/chips/sis5595.c
@@ -0,0 +1,816 @@
1/*
2 sis5595.c - Part of lm_sensors, Linux kernel modules
3 for hardware monitoring
4
5 Copyright (C) 1998 - 2001 Frodo Looijaard <frodol@dds.nl>,
6 Kyösti Mälkki <kmalkki@cc.hut.fi>, and
7 Mark D. Studebaker <mdsxyz123@yahoo.com>
8 Ported to Linux 2.6 by Aurelien Jarno <aurelien@aurel32.net> with
9 the help of Jean Delvare <khali@linux-fr.org>
10
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2 of the License, or
14 (at your option) any later version.
15
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
20
21 You should have received a copy of the GNU General Public License
22 along with this program; if not, write to the Free Software
23 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24*/
25
26/*
27 SiS southbridge has a LM78-like chip integrated on the same IC.
28 This driver is a customized copy of lm78.c
29
30 Supports following revisions:
31 Version PCI ID PCI Revision
32 1 1039/0008 AF or less
33 2 1039/0008 B0 or greater
34
35 Note: these chips contain a 0008 device which is incompatible with the
36 5595. We recognize these by the presence of the listed
37 "blacklist" PCI ID and refuse to load.
38
39 NOT SUPPORTED PCI ID BLACKLIST PCI ID
40 540 0008 0540
41 550 0008 0550
42 5513 0008 5511
43 5581 0008 5597
44 5582 0008 5597
45 5597 0008 5597
46 5598 0008 5597/5598
47 630 0008 0630
48 645 0008 0645
49 730 0008 0730
50 735 0008 0735
51*/
52
53#include <linux/module.h>
54#include <linux/slab.h>
55#include <linux/ioport.h>
56#include <linux/pci.h>
57#include <linux/i2c.h>
58#include <linux/i2c-sensor.h>
59#include <linux/init.h>
60#include <asm/io.h>
61
62
63/* If force_addr is set to anything different from 0, we forcibly enable
64 the device at the given address. */
65static u16 force_addr;
66module_param(force_addr, ushort, 0);
67MODULE_PARM_DESC(force_addr,
68 "Initialize the base address of the sensors");
69
70/* Addresses to scan.
71 Note that we can't determine the ISA address until we have initialized
72 our module */
73static unsigned short normal_i2c[] = { I2C_CLIENT_END };
74static unsigned int normal_isa[] = { 0x0000, I2C_CLIENT_ISA_END };
75
76/* Insmod parameters */
77SENSORS_INSMOD_1(sis5595);
78
79/* Many SIS5595 constants specified below */
80
81/* Length of ISA address segment */
82#define SIS5595_EXTENT 8
83/* PCI Config Registers */
84#define SIS5595_REVISION_REG 0x08
85#define SIS5595_BASE_REG 0x68
86#define SIS5595_PIN_REG 0x7A
87#define SIS5595_ENABLE_REG 0x7B
88
89/* Where are the ISA address/data registers relative to the base address */
90#define SIS5595_ADDR_REG_OFFSET 5
91#define SIS5595_DATA_REG_OFFSET 6
92
93/* The SIS5595 registers */
94#define SIS5595_REG_IN_MAX(nr) (0x2b + (nr) * 2)
95#define SIS5595_REG_IN_MIN(nr) (0x2c + (nr) * 2)
96#define SIS5595_REG_IN(nr) (0x20 + (nr))
97
98#define SIS5595_REG_FAN_MIN(nr) (0x3b + (nr))
99#define SIS5595_REG_FAN(nr) (0x28 + (nr))
100
101/* On the first version of the chip, the temp registers are separate.
102 On the second version,
103 TEMP pin is shared with IN4, configured in PCI register 0x7A.
104 The registers are the same as well.
105 OVER and HYST are really MAX and MIN. */
106
107#define REV2MIN 0xb0
108#define SIS5595_REG_TEMP (( data->revision) >= REV2MIN) ? \
109 SIS5595_REG_IN(4) : 0x27
110#define SIS5595_REG_TEMP_OVER (( data->revision) >= REV2MIN) ? \
111 SIS5595_REG_IN_MAX(4) : 0x39
112#define SIS5595_REG_TEMP_HYST (( data->revision) >= REV2MIN) ? \
113 SIS5595_REG_IN_MIN(4) : 0x3a
114
115#define SIS5595_REG_CONFIG 0x40
116#define SIS5595_REG_ALARM1 0x41
117#define SIS5595_REG_ALARM2 0x42
118#define SIS5595_REG_FANDIV 0x47
119
120/* Conversions. Limit checking is only done on the TO_REG
121 variants. */
122
123/* IN: mV, (0V to 4.08V)
124 REG: 16mV/bit */
125static inline u8 IN_TO_REG(unsigned long val)
126{
127 unsigned long nval = SENSORS_LIMIT(val, 0, 4080);
128 return (nval + 8) / 16;
129}
130#define IN_FROM_REG(val) ((val) * 16)
131
132static inline u8 FAN_TO_REG(long rpm, int div)
133{
134 if (rpm <= 0)
135 return 255;
136 return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
137}
138
139static inline int FAN_FROM_REG(u8 val, int div)
140{
141 return val==0 ? -1 : val==255 ? 0 : 1350000/(val*div);
142}
143
144/* TEMP: mC (-54.12C to +157.53C)
145 REG: 0.83C/bit + 52.12, two's complement */
146static inline int TEMP_FROM_REG(s8 val)
147{
148 return val * 830 + 52120;
149}
150static inline s8 TEMP_TO_REG(int val)
151{
152 int nval = SENSORS_LIMIT(val, -54120, 157530) ;
153 return nval<0 ? (nval-5212-415)/830 : (nval-5212+415)/830;
154}
155
156/* FAN DIV: 1, 2, 4, or 8 (defaults to 2)
157 REG: 0, 1, 2, or 3 (respectively) (defaults to 1) */
158static inline u8 DIV_TO_REG(int val)
159{
160 return val==8 ? 3 : val==4 ? 2 : val==1 ? 0 : 1;
161}
162#define DIV_FROM_REG(val) (1 << (val))
163
164/* For the SIS5595, we need to keep some data in memory. That
165 data is pointed to by sis5595_list[NR]->data. The structure itself is
166 dynamically allocated, at the time when the new sis5595 client is
167 allocated. */
168struct sis5595_data {
169 struct i2c_client client;
170 struct semaphore lock;
171
172 struct semaphore update_lock;
173 char valid; /* !=0 if following fields are valid */
174 unsigned long last_updated; /* In jiffies */
175 char maxins; /* == 3 if temp enabled, otherwise == 4 */
176 u8 revision; /* Reg. value */
177
178 u8 in[5]; /* Register value */
179 u8 in_max[5]; /* Register value */
180 u8 in_min[5]; /* Register value */
181 u8 fan[2]; /* Register value */
182 u8 fan_min[2]; /* Register value */
183 s8 temp; /* Register value */
184 s8 temp_over; /* Register value */
185 s8 temp_hyst; /* Register value */
186 u8 fan_div[2]; /* Register encoding, shifted right */
187 u16 alarms; /* Register encoding, combined */
188};
189
190static struct pci_dev *s_bridge; /* pointer to the (only) sis5595 */
191
192static int sis5595_attach_adapter(struct i2c_adapter *adapter);
193static int sis5595_detect(struct i2c_adapter *adapter, int address, int kind);
194static int sis5595_detach_client(struct i2c_client *client);
195
196static int sis5595_read_value(struct i2c_client *client, u8 register);
197static int sis5595_write_value(struct i2c_client *client, u8 register, u8 value);
198static struct sis5595_data *sis5595_update_device(struct device *dev);
199static void sis5595_init_client(struct i2c_client *client);
200
201static struct i2c_driver sis5595_driver = {
202 .owner = THIS_MODULE,
203 .name = "sis5595",
204 .id = I2C_DRIVERID_SIS5595,
205 .flags = I2C_DF_NOTIFY,
206 .attach_adapter = sis5595_attach_adapter,
207 .detach_client = sis5595_detach_client,
208};
209
210/* 4 Voltages */
211static ssize_t show_in(struct device *dev, char *buf, int nr)
212{
213 struct sis5595_data *data = sis5595_update_device(dev);
214 return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr]));
215}
216
217static ssize_t show_in_min(struct device *dev, char *buf, int nr)
218{
219 struct sis5595_data *data = sis5595_update_device(dev);
220 return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr]));
221}
222
223static ssize_t show_in_max(struct device *dev, char *buf, int nr)
224{
225 struct sis5595_data *data = sis5595_update_device(dev);
226 return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr]));
227}
228
229static ssize_t set_in_min(struct device *dev, const char *buf,
230 size_t count, int nr)
231{
232 struct i2c_client *client = to_i2c_client(dev);
233 struct sis5595_data *data = i2c_get_clientdata(client);
234 unsigned long val = simple_strtoul(buf, NULL, 10);
235
236 down(&data->update_lock);
237 data->in_min[nr] = IN_TO_REG(val);
238 sis5595_write_value(client, SIS5595_REG_IN_MIN(nr), data->in_min[nr]);
239 up(&data->update_lock);
240 return count;
241}
242
243static ssize_t set_in_max(struct device *dev, const char *buf,
244 size_t count, int nr)
245{
246 struct i2c_client *client = to_i2c_client(dev);
247 struct sis5595_data *data = i2c_get_clientdata(client);
248 unsigned long val = simple_strtoul(buf, NULL, 10);
249
250 down(&data->update_lock);
251 data->in_max[nr] = IN_TO_REG(val);
252 sis5595_write_value(client, SIS5595_REG_IN_MAX(nr), data->in_max[nr]);
253 up(&data->update_lock);
254 return count;
255}
256
257#define show_in_offset(offset) \
258static ssize_t \
259 show_in##offset (struct device *dev, char *buf) \
260{ \
261 return show_in(dev, buf, offset); \
262} \
263static DEVICE_ATTR(in##offset##_input, S_IRUGO, \
264 show_in##offset, NULL); \
265static ssize_t \
266 show_in##offset##_min (struct device *dev, char *buf) \
267{ \
268 return show_in_min(dev, buf, offset); \
269} \
270static ssize_t \
271 show_in##offset##_max (struct device *dev, char *buf) \
272{ \
273 return show_in_max(dev, buf, offset); \
274} \
275static ssize_t set_in##offset##_min (struct device *dev, \
276 const char *buf, size_t count) \
277{ \
278 return set_in_min(dev, buf, count, offset); \
279} \
280static ssize_t set_in##offset##_max (struct device *dev, \
281 const char *buf, size_t count) \
282{ \
283 return set_in_max(dev, buf, count, offset); \
284} \
285static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
286 show_in##offset##_min, set_in##offset##_min); \
287static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
288 show_in##offset##_max, set_in##offset##_max);
289
290show_in_offset(0);
291show_in_offset(1);
292show_in_offset(2);
293show_in_offset(3);
294show_in_offset(4);
295
296/* Temperature */
297static ssize_t show_temp(struct device *dev, char *buf)
298{
299 struct sis5595_data *data = sis5595_update_device(dev);
300 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp));
301}
302
303static ssize_t show_temp_over(struct device *dev, char *buf)
304{
305 struct sis5595_data *data = sis5595_update_device(dev);
306 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_over));
307}
308
309static ssize_t set_temp_over(struct device *dev, const char *buf, size_t count)
310{
311 struct i2c_client *client = to_i2c_client(dev);
312 struct sis5595_data *data = i2c_get_clientdata(client);
313 long val = simple_strtol(buf, NULL, 10);
314
315 down(&data->update_lock);
316 data->temp_over = TEMP_TO_REG(val);
317 sis5595_write_value(client, SIS5595_REG_TEMP_OVER, data->temp_over);
318 up(&data->update_lock);
319 return count;
320}
321
322static ssize_t show_temp_hyst(struct device *dev, char *buf)
323{
324 struct sis5595_data *data = sis5595_update_device(dev);
325 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_hyst));
326}
327
328static ssize_t set_temp_hyst(struct device *dev, const char *buf, size_t count)
329{
330 struct i2c_client *client = to_i2c_client(dev);
331 struct sis5595_data *data = i2c_get_clientdata(client);
332 long val = simple_strtol(buf, NULL, 10);
333
334 down(&data->update_lock);
335 data->temp_hyst = TEMP_TO_REG(val);
336 sis5595_write_value(client, SIS5595_REG_TEMP_HYST, data->temp_hyst);
337 up(&data->update_lock);
338 return count;
339}
340
341static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL);
342static DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR,
343 show_temp_over, set_temp_over);
344static DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR,
345 show_temp_hyst, set_temp_hyst);
346
347/* 2 Fans */
348static ssize_t show_fan(struct device *dev, char *buf, int nr)
349{
350 struct sis5595_data *data = sis5595_update_device(dev);
351 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr],
352 DIV_FROM_REG(data->fan_div[nr])) );
353}
354
355static ssize_t show_fan_min(struct device *dev, char *buf, int nr)
356{
357 struct sis5595_data *data = sis5595_update_device(dev);
358 return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan_min[nr],
359 DIV_FROM_REG(data->fan_div[nr])) );
360}
361
362static ssize_t set_fan_min(struct device *dev, const char *buf,
363 size_t count, int nr)
364{
365 struct i2c_client *client = to_i2c_client(dev);
366 struct sis5595_data *data = i2c_get_clientdata(client);
367 unsigned long val = simple_strtoul(buf, NULL, 10);
368
369 down(&data->update_lock);
370 data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
371 sis5595_write_value(client, SIS5595_REG_FAN_MIN(nr), data->fan_min[nr]);
372 up(&data->update_lock);
373 return count;
374}
375
376static ssize_t show_fan_div(struct device *dev, char *buf, int nr)
377{
378 struct sis5595_data *data = sis5595_update_device(dev);
379 return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]) );
380}
381
382/* Note: we save and restore the fan minimum here, because its value is
383 determined in part by the fan divisor. This follows the principle of
384 least suprise; the user doesn't expect the fan minimum to change just
385 because the divisor changed. */
386static ssize_t set_fan_div(struct device *dev, const char *buf,
387 size_t count, int nr)
388{
389 struct i2c_client *client = to_i2c_client(dev);
390 struct sis5595_data *data = i2c_get_clientdata(client);
391 unsigned long min;
392 unsigned long val = simple_strtoul(buf, NULL, 10);
393 int reg;
394
395 down(&data->update_lock);
396 min = FAN_FROM_REG(data->fan_min[nr],
397 DIV_FROM_REG(data->fan_div[nr]));
398 reg = sis5595_read_value(client, SIS5595_REG_FANDIV);
399
400 switch (val) {
401 case 1: data->fan_div[nr] = 0; break;
402 case 2: data->fan_div[nr] = 1; break;
403 case 4: data->fan_div[nr] = 2; break;
404 case 8: data->fan_div[nr] = 3; break;
405 default:
406 dev_err(&client->dev, "fan_div value %ld not "
407 "supported. Choose one of 1, 2, 4 or 8!\n", val);
408 up(&data->update_lock);
409 return -EINVAL;
410 }
411
412 switch (nr) {
413 case 0:
414 reg = (reg & 0xcf) | (data->fan_div[nr] << 4);
415 break;
416 case 1:
417 reg = (reg & 0x3f) | (data->fan_div[nr] << 6);
418 break;
419 }
420 sis5595_write_value(client, SIS5595_REG_FANDIV, reg);
421 data->fan_min[nr] =
422 FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
423 sis5595_write_value(client, SIS5595_REG_FAN_MIN(nr), data->fan_min[nr]);
424 up(&data->update_lock);
425 return count;
426}
427
428#define show_fan_offset(offset) \
429static ssize_t show_fan_##offset (struct device *dev, char *buf) \
430{ \
431 return show_fan(dev, buf, offset - 1); \
432} \
433static ssize_t show_fan_##offset##_min (struct device *dev, char *buf) \
434{ \
435 return show_fan_min(dev, buf, offset - 1); \
436} \
437static ssize_t show_fan_##offset##_div (struct device *dev, char *buf) \
438{ \
439 return show_fan_div(dev, buf, offset - 1); \
440} \
441static ssize_t set_fan_##offset##_min (struct device *dev, \
442 const char *buf, size_t count) \
443{ \
444 return set_fan_min(dev, buf, count, offset - 1); \
445} \
446static DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan_##offset, NULL);\
447static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
448 show_fan_##offset##_min, set_fan_##offset##_min);
449
450show_fan_offset(1);
451show_fan_offset(2);
452
453static ssize_t set_fan_1_div(struct device *dev, const char *buf,
454 size_t count)
455{
456 return set_fan_div(dev, buf, count, 0) ;
457}
458
459static ssize_t set_fan_2_div(struct device *dev, const char *buf,
460 size_t count)
461{
462 return set_fan_div(dev, buf, count, 1) ;
463}
464static DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR,
465 show_fan_1_div, set_fan_1_div);
466static DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR,
467 show_fan_2_div, set_fan_2_div);
468
469/* Alarms */
470static ssize_t show_alarms(struct device *dev, char *buf)
471{
472 struct sis5595_data *data = sis5595_update_device(dev);
473 return sprintf(buf, "%d\n", data->alarms);
474}
475static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
476
477/* This is called when the module is loaded */
478static int sis5595_attach_adapter(struct i2c_adapter *adapter)
479{
480 if (!(adapter->class & I2C_CLASS_HWMON))
481 return 0;
482 return i2c_detect(adapter, &addr_data, sis5595_detect);
483}
484
485int sis5595_detect(struct i2c_adapter *adapter, int address, int kind)
486{
487 int err = 0;
488 int i;
489 struct i2c_client *new_client;
490 struct sis5595_data *data;
491 char val;
492 u16 a;
493
494 /* Make sure we are probing the ISA bus!! */
495 if (!i2c_is_isa_adapter(adapter))
496 goto exit;
497
498 if (force_addr)
499 address = force_addr & ~(SIS5595_EXTENT - 1);
500 /* Reserve the ISA region */
501 if (!request_region(address, SIS5595_EXTENT, sis5595_driver.name)) {
502 err = -EBUSY;
503 goto exit;
504 }
505 if (force_addr) {
506 dev_warn(&adapter->dev, "forcing ISA address 0x%04X\n", address);
507 if (PCIBIOS_SUCCESSFUL !=
508 pci_write_config_word(s_bridge, SIS5595_BASE_REG, address))
509 goto exit_release;
510 if (PCIBIOS_SUCCESSFUL !=
511 pci_read_config_word(s_bridge, SIS5595_BASE_REG, &a))
512 goto exit_release;
513 if ((a & ~(SIS5595_EXTENT - 1)) != address)
514 /* doesn't work for some chips? */
515 goto exit_release;
516 }
517
518 if (PCIBIOS_SUCCESSFUL !=
519 pci_read_config_byte(s_bridge, SIS5595_ENABLE_REG, &val)) {
520 goto exit_release;
521 }
522 if ((val & 0x80) == 0) {
523 if (PCIBIOS_SUCCESSFUL !=
524 pci_write_config_byte(s_bridge, SIS5595_ENABLE_REG,
525 val | 0x80))
526 goto exit_release;
527 if (PCIBIOS_SUCCESSFUL !=
528 pci_read_config_byte(s_bridge, SIS5595_ENABLE_REG, &val))
529 goto exit_release;
530 if ((val & 0x80) == 0)
531 /* doesn't work for some chips! */
532 goto exit_release;
533 }
534
535 if (!(data = kmalloc(sizeof(struct sis5595_data), GFP_KERNEL))) {
536 err = -ENOMEM;
537 goto exit_release;
538 }
539 memset(data, 0, sizeof(struct sis5595_data));
540
541 new_client = &data->client;
542 new_client->addr = address;
543 init_MUTEX(&data->lock);
544 i2c_set_clientdata(new_client, data);
545 new_client->adapter = adapter;
546 new_client->driver = &sis5595_driver;
547 new_client->flags = 0;
548
549 /* Check revision and pin registers to determine whether 4 or 5 voltages */
550 pci_read_config_byte(s_bridge, SIS5595_REVISION_REG, &(data->revision));
551 /* 4 voltages, 1 temp */
552 data->maxins = 3;
553 if (data->revision >= REV2MIN) {
554 pci_read_config_byte(s_bridge, SIS5595_PIN_REG, &val);
555 if (!(val & 0x80))
556 /* 5 voltages, no temps */
557 data->maxins = 4;
558 }
559
560 /* Fill in the remaining client fields and put it into the global list */
561 strlcpy(new_client->name, "sis5595", I2C_NAME_SIZE);
562
563 data->valid = 0;
564 init_MUTEX(&data->update_lock);
565
566 /* Tell the I2C layer a new client has arrived */
567 if ((err = i2c_attach_client(new_client)))
568 goto exit_free;
569
570 /* Initialize the SIS5595 chip */
571 sis5595_init_client(new_client);
572
573 /* A few vars need to be filled upon startup */
574 for (i = 0; i < 2; i++) {
575 data->fan_min[i] = sis5595_read_value(new_client,
576 SIS5595_REG_FAN_MIN(i));
577 }
578
579 /* Register sysfs hooks */
580 device_create_file(&new_client->dev, &dev_attr_in0_input);
581 device_create_file(&new_client->dev, &dev_attr_in0_min);
582 device_create_file(&new_client->dev, &dev_attr_in0_max);
583 device_create_file(&new_client->dev, &dev_attr_in1_input);
584 device_create_file(&new_client->dev, &dev_attr_in1_min);
585 device_create_file(&new_client->dev, &dev_attr_in1_max);
586 device_create_file(&new_client->dev, &dev_attr_in2_input);
587 device_create_file(&new_client->dev, &dev_attr_in2_min);
588 device_create_file(&new_client->dev, &dev_attr_in2_max);
589 device_create_file(&new_client->dev, &dev_attr_in3_input);
590 device_create_file(&new_client->dev, &dev_attr_in3_min);
591 device_create_file(&new_client->dev, &dev_attr_in3_max);
592 if (data->maxins == 4) {
593 device_create_file(&new_client->dev, &dev_attr_in4_input);
594 device_create_file(&new_client->dev, &dev_attr_in4_min);
595 device_create_file(&new_client->dev, &dev_attr_in4_max);
596 }
597 device_create_file(&new_client->dev, &dev_attr_fan1_input);
598 device_create_file(&new_client->dev, &dev_attr_fan1_min);
599 device_create_file(&new_client->dev, &dev_attr_fan1_div);
600 device_create_file(&new_client->dev, &dev_attr_fan2_input);
601 device_create_file(&new_client->dev, &dev_attr_fan2_min);
602 device_create_file(&new_client->dev, &dev_attr_fan2_div);
603 device_create_file(&new_client->dev, &dev_attr_alarms);
604 if (data->maxins == 3) {
605 device_create_file(&new_client->dev, &dev_attr_temp1_input);
606 device_create_file(&new_client->dev, &dev_attr_temp1_max);
607 device_create_file(&new_client->dev, &dev_attr_temp1_max_hyst);
608 }
609 return 0;
610
611exit_free:
612 kfree(data);
613exit_release:
614 release_region(address, SIS5595_EXTENT);
615exit:
616 return err;
617}
618
619static int sis5595_detach_client(struct i2c_client *client)
620{
621 int err;
622
623 if ((err = i2c_detach_client(client))) {
624 dev_err(&client->dev,
625 "Client deregistration failed, client not detached.\n");
626 return err;
627 }
628
629 if (i2c_is_isa_client(client))
630 release_region(client->addr, SIS5595_EXTENT);
631
632 kfree(i2c_get_clientdata(client));
633
634 return 0;
635}
636
637
638/* ISA access must be locked explicitly. */
639static int sis5595_read_value(struct i2c_client *client, u8 reg)
640{
641 int res;
642
643 struct sis5595_data *data = i2c_get_clientdata(client);
644 down(&data->lock);
645 outb_p(reg, client->addr + SIS5595_ADDR_REG_OFFSET);
646 res = inb_p(client->addr + SIS5595_DATA_REG_OFFSET);
647 up(&data->lock);
648 return res;
649}
650
651static int sis5595_write_value(struct i2c_client *client, u8 reg, u8 value)
652{
653 struct sis5595_data *data = i2c_get_clientdata(client);
654 down(&data->lock);
655 outb_p(reg, client->addr + SIS5595_ADDR_REG_OFFSET);
656 outb_p(value, client->addr + SIS5595_DATA_REG_OFFSET);
657 up(&data->lock);
658 return 0;
659}
660
661/* Called when we have found a new SIS5595. */
662static void sis5595_init_client(struct i2c_client *client)
663{
664 u8 config = sis5595_read_value(client, SIS5595_REG_CONFIG);
665 if (!(config & 0x01))
666 sis5595_write_value(client, SIS5595_REG_CONFIG,
667 (config & 0xf7) | 0x01);
668}
669
670static struct sis5595_data *sis5595_update_device(struct device *dev)
671{
672 struct i2c_client *client = to_i2c_client(dev);
673 struct sis5595_data *data = i2c_get_clientdata(client);
674 int i;
675
676 down(&data->update_lock);
677
678 if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
679 || !data->valid) {
680
681 for (i = 0; i <= data->maxins; i++) {
682 data->in[i] =
683 sis5595_read_value(client, SIS5595_REG_IN(i));
684 data->in_min[i] =
685 sis5595_read_value(client,
686 SIS5595_REG_IN_MIN(i));
687 data->in_max[i] =
688 sis5595_read_value(client,
689 SIS5595_REG_IN_MAX(i));
690 }
691 for (i = 0; i < 2; i++) {
692 data->fan[i] =
693 sis5595_read_value(client, SIS5595_REG_FAN(i));
694 data->fan_min[i] =
695 sis5595_read_value(client,
696 SIS5595_REG_FAN_MIN(i));
697 }
698 if (data->maxins == 3) {
699 data->temp =
700 sis5595_read_value(client, SIS5595_REG_TEMP);
701 data->temp_over =
702 sis5595_read_value(client, SIS5595_REG_TEMP_OVER);
703 data->temp_hyst =
704 sis5595_read_value(client, SIS5595_REG_TEMP_HYST);
705 }
706 i = sis5595_read_value(client, SIS5595_REG_FANDIV);
707 data->fan_div[0] = (i >> 4) & 0x03;
708 data->fan_div[1] = i >> 6;
709 data->alarms =
710 sis5595_read_value(client, SIS5595_REG_ALARM1) |
711 (sis5595_read_value(client, SIS5595_REG_ALARM2) << 8);
712 data->last_updated = jiffies;
713 data->valid = 1;
714 }
715
716 up(&data->update_lock);
717
718 return data;
719}
720
721static struct pci_device_id sis5595_pci_ids[] = {
722 { PCI_DEVICE(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503) },
723 { 0, }
724};
725
726MODULE_DEVICE_TABLE(pci, sis5595_pci_ids);
727
728static int blacklist[] __devinitdata = {
729 PCI_DEVICE_ID_SI_540,
730 PCI_DEVICE_ID_SI_550,
731 PCI_DEVICE_ID_SI_630,
732 PCI_DEVICE_ID_SI_645,
733 PCI_DEVICE_ID_SI_730,
734 PCI_DEVICE_ID_SI_735,
735 PCI_DEVICE_ID_SI_5511, /* 5513 chip has the 0008 device but
736 that ID shows up in other chips so we
737 use the 5511 ID for recognition */
738 PCI_DEVICE_ID_SI_5597,
739 PCI_DEVICE_ID_SI_5598,
740 0 };
741
742static int __devinit sis5595_pci_probe(struct pci_dev *dev,
743 const struct pci_device_id *id)
744{
745 u16 val;
746 int *i;
747 int addr = 0;
748
749 for (i = blacklist; *i != 0; i++) {
750 struct pci_dev *dev;
751 dev = pci_get_device(PCI_VENDOR_ID_SI, *i, NULL);
752 if (dev) {
753 dev_err(&dev->dev, "Looked for SIS5595 but found unsupported device %.4x\n", *i);
754 pci_dev_put(dev);
755 return -ENODEV;
756 }
757 }
758
759 if (PCIBIOS_SUCCESSFUL !=
760 pci_read_config_word(dev, SIS5595_BASE_REG, &val))
761 return -ENODEV;
762
763 addr = val & ~(SIS5595_EXTENT - 1);
764 if (addr == 0 && force_addr == 0) {
765 dev_err(&dev->dev, "Base address not set - upgrade BIOS or use force_addr=0xaddr\n");
766 return -ENODEV;
767 }
768 if (force_addr)
769 addr = force_addr; /* so detect will get called */
770
771 if (!addr) {
772 dev_err(&dev->dev,"No SiS 5595 sensors found.\n");
773 return -ENODEV;
774 }
775 normal_isa[0] = addr;
776
777 s_bridge = pci_dev_get(dev);
778 if (i2c_add_driver(&sis5595_driver)) {
779 pci_dev_put(s_bridge);
780 s_bridge = NULL;
781 }
782
783 /* Always return failure here. This is to allow other drivers to bind
784 * to this pci device. We don't really want to have control over the
785 * pci device, we only wanted to read as few register values from it.
786 */
787 return -ENODEV;
788}
789
790static struct pci_driver sis5595_pci_driver = {
791 .name = "sis5595",
792 .id_table = sis5595_pci_ids,
793 .probe = sis5595_pci_probe,
794};
795
796static int __init sm_sis5595_init(void)
797{
798 return pci_register_driver(&sis5595_pci_driver);
799}
800
801static void __exit sm_sis5595_exit(void)
802{
803 pci_unregister_driver(&sis5595_pci_driver);
804 if (s_bridge != NULL) {
805 i2c_del_driver(&sis5595_driver);
806 pci_dev_put(s_bridge);
807 s_bridge = NULL;
808 }
809}
810
811MODULE_AUTHOR("Aurelien Jarno <aurelien@aurel32.net>");
812MODULE_DESCRIPTION("SiS 5595 Sensor device");
813MODULE_LICENSE("GPL");
814
815module_init(sm_sis5595_init);
816module_exit(sm_sis5595_exit);
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-13 07:43:37 -0500