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74ba9207 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 | 2 | /* |
8fda79ec GR |
3 | * sis5595.c - Part of lm_sensors, Linux kernel modules |
4 | * for hardware monitoring | |
5 | * | |
6 | * Copyright (C) 1998 - 2001 Frodo Looijaard <frodol@dds.nl>, | |
7 | * Kyösti Mälkki <kmalkki@cc.hut.fi>, and | |
8 | * Mark D. Studebaker <mdsxyz123@yahoo.com> | |
9 | * Ported to Linux 2.6 by Aurelien Jarno <aurelien@aurel32.net> with | |
7c81c60f | 10 | * the help of Jean Delvare <jdelvare@suse.de> |
8fda79ec | 11 | */ |
1da177e4 LT |
12 | |
13 | /* | |
8fda79ec GR |
14 | * SiS southbridge has a LM78-like chip integrated on the same IC. |
15 | * This driver is a customized copy of lm78.c | |
16 | * | |
17 | * Supports following revisions: | |
18 | * Version PCI ID PCI Revision | |
19 | * 1 1039/0008 AF or less | |
20 | * 2 1039/0008 B0 or greater | |
21 | * | |
22 | * Note: these chips contain a 0008 device which is incompatible with the | |
23 | * 5595. We recognize these by the presence of the listed | |
24 | * "blacklist" PCI ID and refuse to load. | |
25 | * | |
26 | * NOT SUPPORTED PCI ID BLACKLIST PCI ID | |
27 | * 540 0008 0540 | |
28 | * 550 0008 0550 | |
29 | * 5513 0008 5511 | |
30 | * 5581 0008 5597 | |
31 | * 5582 0008 5597 | |
32 | * 5597 0008 5597 | |
33 | * 5598 0008 5597/5598 | |
34 | * 630 0008 0630 | |
35 | * 645 0008 0645 | |
36 | * 730 0008 0730 | |
37 | * 735 0008 0735 | |
38 | */ | |
1da177e4 | 39 | |
847a3b04 | 40 | #define DRIVER_NAME "sis5595" |
4b2515db JP |
41 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
42 | ||
1da177e4 LT |
43 | #include <linux/module.h> |
44 | #include <linux/slab.h> | |
45 | #include <linux/ioport.h> | |
46 | #include <linux/pci.h> | |
17e7dc43 | 47 | #include <linux/platform_device.h> |
943b0830 | 48 | #include <linux/hwmon.h> |
1f5f48dd | 49 | #include <linux/hwmon-sysfs.h> |
943b0830 | 50 | #include <linux/err.h> |
1da177e4 | 51 | #include <linux/init.h> |
ff324094 | 52 | #include <linux/jiffies.h> |
9a61bf63 | 53 | #include <linux/mutex.h> |
a5ebe668 | 54 | #include <linux/sysfs.h> |
b9acb64a | 55 | #include <linux/acpi.h> |
6055fae8 | 56 | #include <linux/io.h> |
1da177e4 | 57 | |
8fda79ec GR |
58 | /* |
59 | * If force_addr is set to anything different from 0, we forcibly enable | |
60 | * the device at the given address. | |
61 | */ | |
1da177e4 LT |
62 | static u16 force_addr; |
63 | module_param(force_addr, ushort, 0); | |
64 | MODULE_PARM_DESC(force_addr, | |
65 | "Initialize the base address of the sensors"); | |
66 | ||
17e7dc43 | 67 | static struct platform_device *pdev; |
1da177e4 LT |
68 | |
69 | /* Many SIS5595 constants specified below */ | |
70 | ||
71 | /* Length of ISA address segment */ | |
72 | #define SIS5595_EXTENT 8 | |
73 | /* PCI Config Registers */ | |
1da177e4 LT |
74 | #define SIS5595_BASE_REG 0x68 |
75 | #define SIS5595_PIN_REG 0x7A | |
76 | #define SIS5595_ENABLE_REG 0x7B | |
77 | ||
78 | /* Where are the ISA address/data registers relative to the base address */ | |
79 | #define SIS5595_ADDR_REG_OFFSET 5 | |
80 | #define SIS5595_DATA_REG_OFFSET 6 | |
81 | ||
82 | /* The SIS5595 registers */ | |
83 | #define SIS5595_REG_IN_MAX(nr) (0x2b + (nr) * 2) | |
84 | #define SIS5595_REG_IN_MIN(nr) (0x2c + (nr) * 2) | |
85 | #define SIS5595_REG_IN(nr) (0x20 + (nr)) | |
86 | ||
87 | #define SIS5595_REG_FAN_MIN(nr) (0x3b + (nr)) | |
88 | #define SIS5595_REG_FAN(nr) (0x28 + (nr)) | |
89 | ||
8fda79ec GR |
90 | /* |
91 | * On the first version of the chip, the temp registers are separate. | |
92 | * On the second version, | |
93 | * TEMP pin is shared with IN4, configured in PCI register 0x7A. | |
94 | * The registers are the same as well. | |
95 | * OVER and HYST are really MAX and MIN. | |
96 | */ | |
1da177e4 LT |
97 | |
98 | #define REV2MIN 0xb0 | |
8fda79ec GR |
99 | #define SIS5595_REG_TEMP (((data->revision) >= REV2MIN) ? \ |
100 | SIS5595_REG_IN(4) : 0x27) | |
101 | #define SIS5595_REG_TEMP_OVER (((data->revision) >= REV2MIN) ? \ | |
102 | SIS5595_REG_IN_MAX(4) : 0x39) | |
103 | #define SIS5595_REG_TEMP_HYST (((data->revision) >= REV2MIN) ? \ | |
104 | SIS5595_REG_IN_MIN(4) : 0x3a) | |
1da177e4 LT |
105 | |
106 | #define SIS5595_REG_CONFIG 0x40 | |
107 | #define SIS5595_REG_ALARM1 0x41 | |
108 | #define SIS5595_REG_ALARM2 0x42 | |
109 | #define SIS5595_REG_FANDIV 0x47 | |
110 | ||
8fda79ec GR |
111 | /* |
112 | * Conversions. Limit checking is only done on the TO_REG | |
113 | * variants. | |
114 | */ | |
1da177e4 | 115 | |
8fda79ec GR |
116 | /* |
117 | * IN: mV, (0V to 4.08V) | |
118 | * REG: 16mV/bit | |
119 | */ | |
1da177e4 LT |
120 | static inline u8 IN_TO_REG(unsigned long val) |
121 | { | |
2a844c14 | 122 | unsigned long nval = clamp_val(val, 0, 4080); |
1da177e4 LT |
123 | return (nval + 8) / 16; |
124 | } | |
125 | #define IN_FROM_REG(val) ((val) * 16) | |
126 | ||
127 | static inline u8 FAN_TO_REG(long rpm, int div) | |
128 | { | |
129 | if (rpm <= 0) | |
130 | return 255; | |
3806b45b DC |
131 | if (rpm > 1350000) |
132 | return 1; | |
2a844c14 | 133 | return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254); |
1da177e4 LT |
134 | } |
135 | ||
136 | static inline int FAN_FROM_REG(u8 val, int div) | |
137 | { | |
8fda79ec | 138 | return val == 0 ? -1 : val == 255 ? 0 : 1350000 / (val * div); |
1da177e4 LT |
139 | } |
140 | ||
8fda79ec GR |
141 | /* |
142 | * TEMP: mC (-54.12C to +157.53C) | |
143 | * REG: 0.83C/bit + 52.12, two's complement | |
144 | */ | |
1da177e4 LT |
145 | static inline int TEMP_FROM_REG(s8 val) |
146 | { | |
147 | return val * 830 + 52120; | |
148 | } | |
cc336546 | 149 | static inline s8 TEMP_TO_REG(long val) |
1da177e4 | 150 | { |
2a844c14 | 151 | int nval = clamp_val(val, -54120, 157530) ; |
8fda79ec | 152 | return nval < 0 ? (nval - 5212 - 415) / 830 : (nval - 5212 + 415) / 830; |
1da177e4 LT |
153 | } |
154 | ||
8fda79ec GR |
155 | /* |
156 | * FAN DIV: 1, 2, 4, or 8 (defaults to 2) | |
157 | * REG: 0, 1, 2, or 3 (respectively) (defaults to 1) | |
158 | */ | |
1da177e4 LT |
159 | static inline u8 DIV_TO_REG(int val) |
160 | { | |
8fda79ec | 161 | return val == 8 ? 3 : val == 4 ? 2 : val == 1 ? 0 : 1; |
1da177e4 LT |
162 | } |
163 | #define DIV_FROM_REG(val) (1 << (val)) | |
164 | ||
8fda79ec GR |
165 | /* |
166 | * For each registered chip, we need to keep some data in memory. | |
167 | * The structure is dynamically allocated. | |
168 | */ | |
1da177e4 | 169 | struct sis5595_data { |
17e7dc43 JD |
170 | unsigned short addr; |
171 | const char *name; | |
1beeffe4 | 172 | struct device *hwmon_dev; |
9a61bf63 | 173 | struct mutex lock; |
1da177e4 | 174 | |
9a61bf63 | 175 | struct mutex update_lock; |
952a11ca | 176 | bool valid; /* true if following fields are valid */ |
1da177e4 LT |
177 | unsigned long last_updated; /* In jiffies */ |
178 | char maxins; /* == 3 if temp enabled, otherwise == 4 */ | |
179 | u8 revision; /* Reg. value */ | |
180 | ||
181 | u8 in[5]; /* Register value */ | |
182 | u8 in_max[5]; /* Register value */ | |
183 | u8 in_min[5]; /* Register value */ | |
184 | u8 fan[2]; /* Register value */ | |
185 | u8 fan_min[2]; /* Register value */ | |
186 | s8 temp; /* Register value */ | |
187 | s8 temp_over; /* Register value */ | |
188 | s8 temp_hyst; /* Register value */ | |
189 | u8 fan_div[2]; /* Register encoding, shifted right */ | |
190 | u16 alarms; /* Register encoding, combined */ | |
191 | }; | |
192 | ||
193 | static struct pci_dev *s_bridge; /* pointer to the (only) sis5595 */ | |
194 | ||
1b2f9b1e UKK |
195 | /* ISA access must be locked explicitly. */ |
196 | static int sis5595_read_value(struct sis5595_data *data, u8 reg) | |
197 | { | |
198 | int res; | |
1da177e4 | 199 | |
1b2f9b1e UKK |
200 | mutex_lock(&data->lock); |
201 | outb_p(reg, data->addr + SIS5595_ADDR_REG_OFFSET); | |
202 | res = inb_p(data->addr + SIS5595_DATA_REG_OFFSET); | |
203 | mutex_unlock(&data->lock); | |
204 | return res; | |
205 | } | |
1da177e4 | 206 | |
1b2f9b1e UKK |
207 | static void sis5595_write_value(struct sis5595_data *data, u8 reg, u8 value) |
208 | { | |
209 | mutex_lock(&data->lock); | |
210 | outb_p(reg, data->addr + SIS5595_ADDR_REG_OFFSET); | |
211 | outb_p(value, data->addr + SIS5595_DATA_REG_OFFSET); | |
212 | mutex_unlock(&data->lock); | |
213 | } | |
214 | ||
215 | static struct sis5595_data *sis5595_update_device(struct device *dev) | |
216 | { | |
217 | struct sis5595_data *data = dev_get_drvdata(dev); | |
218 | int i; | |
219 | ||
220 | mutex_lock(&data->update_lock); | |
221 | ||
222 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) | |
223 | || !data->valid) { | |
224 | ||
225 | for (i = 0; i <= data->maxins; i++) { | |
226 | data->in[i] = | |
227 | sis5595_read_value(data, SIS5595_REG_IN(i)); | |
228 | data->in_min[i] = | |
229 | sis5595_read_value(data, | |
230 | SIS5595_REG_IN_MIN(i)); | |
231 | data->in_max[i] = | |
232 | sis5595_read_value(data, | |
233 | SIS5595_REG_IN_MAX(i)); | |
234 | } | |
235 | for (i = 0; i < 2; i++) { | |
236 | data->fan[i] = | |
237 | sis5595_read_value(data, SIS5595_REG_FAN(i)); | |
238 | data->fan_min[i] = | |
239 | sis5595_read_value(data, | |
240 | SIS5595_REG_FAN_MIN(i)); | |
241 | } | |
242 | if (data->maxins == 3) { | |
243 | data->temp = | |
244 | sis5595_read_value(data, SIS5595_REG_TEMP); | |
245 | data->temp_over = | |
246 | sis5595_read_value(data, SIS5595_REG_TEMP_OVER); | |
247 | data->temp_hyst = | |
248 | sis5595_read_value(data, SIS5595_REG_TEMP_HYST); | |
249 | } | |
250 | i = sis5595_read_value(data, SIS5595_REG_FANDIV); | |
251 | data->fan_div[0] = (i >> 4) & 0x03; | |
252 | data->fan_div[1] = i >> 6; | |
253 | data->alarms = | |
254 | sis5595_read_value(data, SIS5595_REG_ALARM1) | | |
255 | (sis5595_read_value(data, SIS5595_REG_ALARM2) << 8); | |
256 | data->last_updated = jiffies; | |
257 | data->valid = true; | |
258 | } | |
259 | ||
260 | mutex_unlock(&data->update_lock); | |
261 | ||
262 | return data; | |
263 | } | |
1da177e4 LT |
264 | |
265 | /* 4 Voltages */ | |
60a9c3f1 | 266 | static ssize_t in_show(struct device *dev, struct device_attribute *da, |
1f5f48dd | 267 | char *buf) |
1da177e4 LT |
268 | { |
269 | struct sis5595_data *data = sis5595_update_device(dev); | |
1f5f48dd JD |
270 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
271 | int nr = attr->index; | |
1da177e4 LT |
272 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr])); |
273 | } | |
274 | ||
60a9c3f1 | 275 | static ssize_t in_min_show(struct device *dev, struct device_attribute *da, |
1f5f48dd | 276 | char *buf) |
1da177e4 LT |
277 | { |
278 | struct sis5595_data *data = sis5595_update_device(dev); | |
1f5f48dd JD |
279 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
280 | int nr = attr->index; | |
1da177e4 LT |
281 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr])); |
282 | } | |
283 | ||
60a9c3f1 | 284 | static ssize_t in_max_show(struct device *dev, struct device_attribute *da, |
1f5f48dd | 285 | char *buf) |
1da177e4 LT |
286 | { |
287 | struct sis5595_data *data = sis5595_update_device(dev); | |
1f5f48dd JD |
288 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
289 | int nr = attr->index; | |
1da177e4 LT |
290 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr])); |
291 | } | |
292 | ||
60a9c3f1 GR |
293 | static ssize_t in_min_store(struct device *dev, struct device_attribute *da, |
294 | const char *buf, size_t count) | |
1da177e4 | 295 | { |
17e7dc43 | 296 | struct sis5595_data *data = dev_get_drvdata(dev); |
1f5f48dd JD |
297 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
298 | int nr = attr->index; | |
8fda79ec GR |
299 | unsigned long val; |
300 | int err; | |
301 | ||
302 | err = kstrtoul(buf, 10, &val); | |
303 | if (err) | |
304 | return err; | |
1da177e4 | 305 | |
9a61bf63 | 306 | mutex_lock(&data->update_lock); |
1da177e4 | 307 | data->in_min[nr] = IN_TO_REG(val); |
17e7dc43 | 308 | sis5595_write_value(data, SIS5595_REG_IN_MIN(nr), data->in_min[nr]); |
9a61bf63 | 309 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
310 | return count; |
311 | } | |
312 | ||
60a9c3f1 GR |
313 | static ssize_t in_max_store(struct device *dev, struct device_attribute *da, |
314 | const char *buf, size_t count) | |
1da177e4 | 315 | { |
17e7dc43 | 316 | struct sis5595_data *data = dev_get_drvdata(dev); |
1f5f48dd JD |
317 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
318 | int nr = attr->index; | |
8fda79ec GR |
319 | unsigned long val; |
320 | int err; | |
321 | ||
322 | err = kstrtoul(buf, 10, &val); | |
323 | if (err) | |
324 | return err; | |
1da177e4 | 325 | |
9a61bf63 | 326 | mutex_lock(&data->update_lock); |
1da177e4 | 327 | data->in_max[nr] = IN_TO_REG(val); |
17e7dc43 | 328 | sis5595_write_value(data, SIS5595_REG_IN_MAX(nr), data->in_max[nr]); |
9a61bf63 | 329 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
330 | return count; |
331 | } | |
332 | ||
60a9c3f1 GR |
333 | static SENSOR_DEVICE_ATTR_RO(in0_input, in, 0); |
334 | static SENSOR_DEVICE_ATTR_RW(in0_min, in_min, 0); | |
335 | static SENSOR_DEVICE_ATTR_RW(in0_max, in_max, 0); | |
336 | static SENSOR_DEVICE_ATTR_RO(in1_input, in, 1); | |
337 | static SENSOR_DEVICE_ATTR_RW(in1_min, in_min, 1); | |
338 | static SENSOR_DEVICE_ATTR_RW(in1_max, in_max, 1); | |
339 | static SENSOR_DEVICE_ATTR_RO(in2_input, in, 2); | |
340 | static SENSOR_DEVICE_ATTR_RW(in2_min, in_min, 2); | |
341 | static SENSOR_DEVICE_ATTR_RW(in2_max, in_max, 2); | |
342 | static SENSOR_DEVICE_ATTR_RO(in3_input, in, 3); | |
343 | static SENSOR_DEVICE_ATTR_RW(in3_min, in_min, 3); | |
344 | static SENSOR_DEVICE_ATTR_RW(in3_max, in_max, 3); | |
345 | static SENSOR_DEVICE_ATTR_RO(in4_input, in, 4); | |
346 | static SENSOR_DEVICE_ATTR_RW(in4_min, in_min, 4); | |
347 | static SENSOR_DEVICE_ATTR_RW(in4_max, in_max, 4); | |
1da177e4 LT |
348 | |
349 | /* Temperature */ | |
feaf8bd4 JL |
350 | static ssize_t temp1_input_show(struct device *dev, |
351 | struct device_attribute *attr, char *buf) | |
1da177e4 LT |
352 | { |
353 | struct sis5595_data *data = sis5595_update_device(dev); | |
354 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp)); | |
355 | } | |
356 | ||
feaf8bd4 | 357 | static ssize_t temp1_max_show(struct device *dev, struct device_attribute *attr, |
8fda79ec | 358 | char *buf) |
1da177e4 LT |
359 | { |
360 | struct sis5595_data *data = sis5595_update_device(dev); | |
361 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_over)); | |
362 | } | |
363 | ||
feaf8bd4 JL |
364 | static ssize_t temp1_max_store(struct device *dev, |
365 | struct device_attribute *attr, const char *buf, | |
366 | size_t count) | |
1da177e4 | 367 | { |
17e7dc43 | 368 | struct sis5595_data *data = dev_get_drvdata(dev); |
8fda79ec GR |
369 | long val; |
370 | int err; | |
371 | ||
372 | err = kstrtol(buf, 10, &val); | |
373 | if (err) | |
374 | return err; | |
1da177e4 | 375 | |
9a61bf63 | 376 | mutex_lock(&data->update_lock); |
1da177e4 | 377 | data->temp_over = TEMP_TO_REG(val); |
17e7dc43 | 378 | sis5595_write_value(data, SIS5595_REG_TEMP_OVER, data->temp_over); |
9a61bf63 | 379 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
380 | return count; |
381 | } | |
382 | ||
feaf8bd4 JL |
383 | static ssize_t temp1_max_hyst_show(struct device *dev, |
384 | struct device_attribute *attr, char *buf) | |
1da177e4 LT |
385 | { |
386 | struct sis5595_data *data = sis5595_update_device(dev); | |
387 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_hyst)); | |
388 | } | |
389 | ||
feaf8bd4 JL |
390 | static ssize_t temp1_max_hyst_store(struct device *dev, |
391 | struct device_attribute *attr, | |
392 | const char *buf, size_t count) | |
1da177e4 | 393 | { |
17e7dc43 | 394 | struct sis5595_data *data = dev_get_drvdata(dev); |
8fda79ec GR |
395 | long val; |
396 | int err; | |
397 | ||
398 | err = kstrtol(buf, 10, &val); | |
399 | if (err) | |
400 | return err; | |
1da177e4 | 401 | |
9a61bf63 | 402 | mutex_lock(&data->update_lock); |
1da177e4 | 403 | data->temp_hyst = TEMP_TO_REG(val); |
17e7dc43 | 404 | sis5595_write_value(data, SIS5595_REG_TEMP_HYST, data->temp_hyst); |
9a61bf63 | 405 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
406 | return count; |
407 | } | |
408 | ||
feaf8bd4 JL |
409 | static DEVICE_ATTR_RO(temp1_input); |
410 | static DEVICE_ATTR_RW(temp1_max); | |
411 | static DEVICE_ATTR_RW(temp1_max_hyst); | |
1da177e4 LT |
412 | |
413 | /* 2 Fans */ | |
60a9c3f1 | 414 | static ssize_t fan_show(struct device *dev, struct device_attribute *da, |
1f5f48dd | 415 | char *buf) |
1da177e4 LT |
416 | { |
417 | struct sis5595_data *data = sis5595_update_device(dev); | |
1f5f48dd JD |
418 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
419 | int nr = attr->index; | |
1da177e4 | 420 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr], |
8fda79ec | 421 | DIV_FROM_REG(data->fan_div[nr]))); |
1da177e4 LT |
422 | } |
423 | ||
60a9c3f1 | 424 | static ssize_t fan_min_show(struct device *dev, struct device_attribute *da, |
1f5f48dd | 425 | char *buf) |
1da177e4 LT |
426 | { |
427 | struct sis5595_data *data = sis5595_update_device(dev); | |
1f5f48dd JD |
428 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
429 | int nr = attr->index; | |
8fda79ec GR |
430 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr], |
431 | DIV_FROM_REG(data->fan_div[nr]))); | |
1da177e4 LT |
432 | } |
433 | ||
60a9c3f1 GR |
434 | static ssize_t fan_min_store(struct device *dev, struct device_attribute *da, |
435 | const char *buf, size_t count) | |
1da177e4 | 436 | { |
17e7dc43 | 437 | struct sis5595_data *data = dev_get_drvdata(dev); |
1f5f48dd JD |
438 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
439 | int nr = attr->index; | |
8fda79ec GR |
440 | unsigned long val; |
441 | int err; | |
442 | ||
443 | err = kstrtoul(buf, 10, &val); | |
444 | if (err) | |
445 | return err; | |
1da177e4 | 446 | |
9a61bf63 | 447 | mutex_lock(&data->update_lock); |
1da177e4 | 448 | data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); |
17e7dc43 | 449 | sis5595_write_value(data, SIS5595_REG_FAN_MIN(nr), data->fan_min[nr]); |
9a61bf63 | 450 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
451 | return count; |
452 | } | |
453 | ||
60a9c3f1 | 454 | static ssize_t fan_div_show(struct device *dev, struct device_attribute *da, |
1f5f48dd | 455 | char *buf) |
1da177e4 LT |
456 | { |
457 | struct sis5595_data *data = sis5595_update_device(dev); | |
1f5f48dd JD |
458 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
459 | int nr = attr->index; | |
8fda79ec | 460 | return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr])); |
1da177e4 LT |
461 | } |
462 | ||
8fda79ec GR |
463 | /* |
464 | * Note: we save and restore the fan minimum here, because its value is | |
465 | * determined in part by the fan divisor. This follows the principle of | |
466 | * least surprise; the user doesn't expect the fan minimum to change just | |
467 | * because the divisor changed. | |
468 | */ | |
60a9c3f1 GR |
469 | static ssize_t fan_div_store(struct device *dev, struct device_attribute *da, |
470 | const char *buf, size_t count) | |
1da177e4 | 471 | { |
17e7dc43 | 472 | struct sis5595_data *data = dev_get_drvdata(dev); |
1f5f48dd JD |
473 | struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
474 | int nr = attr->index; | |
1da177e4 | 475 | unsigned long min; |
1da177e4 | 476 | int reg; |
8fda79ec GR |
477 | unsigned long val; |
478 | int err; | |
479 | ||
480 | err = kstrtoul(buf, 10, &val); | |
481 | if (err) | |
482 | return err; | |
1da177e4 | 483 | |
9a61bf63 | 484 | mutex_lock(&data->update_lock); |
1da177e4 LT |
485 | min = FAN_FROM_REG(data->fan_min[nr], |
486 | DIV_FROM_REG(data->fan_div[nr])); | |
17e7dc43 | 487 | reg = sis5595_read_value(data, SIS5595_REG_FANDIV); |
1da177e4 LT |
488 | |
489 | switch (val) { | |
8fda79ec GR |
490 | case 1: |
491 | data->fan_div[nr] = 0; | |
492 | break; | |
493 | case 2: | |
494 | data->fan_div[nr] = 1; | |
495 | break; | |
496 | case 4: | |
497 | data->fan_div[nr] = 2; | |
498 | break; | |
499 | case 8: | |
500 | data->fan_div[nr] = 3; | |
501 | break; | |
1da177e4 | 502 | default: |
b55f3757 GR |
503 | dev_err(dev, |
504 | "fan_div value %ld not supported. Choose one of 1, 2, 4 or 8!\n", | |
505 | val); | |
9a61bf63 | 506 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
507 | return -EINVAL; |
508 | } | |
8fda79ec | 509 | |
1da177e4 LT |
510 | switch (nr) { |
511 | case 0: | |
512 | reg = (reg & 0xcf) | (data->fan_div[nr] << 4); | |
513 | break; | |
514 | case 1: | |
515 | reg = (reg & 0x3f) | (data->fan_div[nr] << 6); | |
516 | break; | |
517 | } | |
17e7dc43 | 518 | sis5595_write_value(data, SIS5595_REG_FANDIV, reg); |
1da177e4 LT |
519 | data->fan_min[nr] = |
520 | FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); | |
17e7dc43 | 521 | sis5595_write_value(data, SIS5595_REG_FAN_MIN(nr), data->fan_min[nr]); |
9a61bf63 | 522 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
523 | return count; |
524 | } | |
525 | ||
60a9c3f1 GR |
526 | static SENSOR_DEVICE_ATTR_RO(fan1_input, fan, 0); |
527 | static SENSOR_DEVICE_ATTR_RW(fan1_min, fan_min, 0); | |
528 | static SENSOR_DEVICE_ATTR_RW(fan1_div, fan_div, 0); | |
529 | static SENSOR_DEVICE_ATTR_RO(fan2_input, fan, 1); | |
530 | static SENSOR_DEVICE_ATTR_RW(fan2_min, fan_min, 1); | |
531 | static SENSOR_DEVICE_ATTR_RW(fan2_div, fan_div, 1); | |
1da177e4 | 532 | |
1da177e4 | 533 | /* Alarms */ |
feaf8bd4 | 534 | static ssize_t alarms_show(struct device *dev, struct device_attribute *attr, |
8fda79ec | 535 | char *buf) |
1da177e4 LT |
536 | { |
537 | struct sis5595_data *data = sis5595_update_device(dev); | |
538 | return sprintf(buf, "%d\n", data->alarms); | |
539 | } | |
feaf8bd4 | 540 | static DEVICE_ATTR_RO(alarms); |
a5ebe668 | 541 | |
60a9c3f1 | 542 | static ssize_t alarm_show(struct device *dev, struct device_attribute *da, |
5c726b3b IM |
543 | char *buf) |
544 | { | |
545 | struct sis5595_data *data = sis5595_update_device(dev); | |
546 | int nr = to_sensor_dev_attr(da)->index; | |
547 | return sprintf(buf, "%u\n", (data->alarms >> nr) & 1); | |
548 | } | |
60a9c3f1 GR |
549 | static SENSOR_DEVICE_ATTR_RO(in0_alarm, alarm, 0); |
550 | static SENSOR_DEVICE_ATTR_RO(in1_alarm, alarm, 1); | |
551 | static SENSOR_DEVICE_ATTR_RO(in2_alarm, alarm, 2); | |
552 | static SENSOR_DEVICE_ATTR_RO(in3_alarm, alarm, 3); | |
553 | static SENSOR_DEVICE_ATTR_RO(in4_alarm, alarm, 15); | |
554 | static SENSOR_DEVICE_ATTR_RO(fan1_alarm, alarm, 6); | |
555 | static SENSOR_DEVICE_ATTR_RO(fan2_alarm, alarm, 7); | |
556 | static SENSOR_DEVICE_ATTR_RO(temp1_alarm, alarm, 15); | |
5c726b3b | 557 | |
feaf8bd4 | 558 | static ssize_t name_show(struct device *dev, struct device_attribute *attr, |
17e7dc43 JD |
559 | char *buf) |
560 | { | |
561 | struct sis5595_data *data = dev_get_drvdata(dev); | |
562 | return sprintf(buf, "%s\n", data->name); | |
563 | } | |
feaf8bd4 | 564 | static DEVICE_ATTR_RO(name); |
17e7dc43 | 565 | |
a5ebe668 | 566 | static struct attribute *sis5595_attributes[] = { |
1f5f48dd JD |
567 | &sensor_dev_attr_in0_input.dev_attr.attr, |
568 | &sensor_dev_attr_in0_min.dev_attr.attr, | |
569 | &sensor_dev_attr_in0_max.dev_attr.attr, | |
5c726b3b | 570 | &sensor_dev_attr_in0_alarm.dev_attr.attr, |
1f5f48dd JD |
571 | &sensor_dev_attr_in1_input.dev_attr.attr, |
572 | &sensor_dev_attr_in1_min.dev_attr.attr, | |
573 | &sensor_dev_attr_in1_max.dev_attr.attr, | |
5c726b3b | 574 | &sensor_dev_attr_in1_alarm.dev_attr.attr, |
1f5f48dd JD |
575 | &sensor_dev_attr_in2_input.dev_attr.attr, |
576 | &sensor_dev_attr_in2_min.dev_attr.attr, | |
577 | &sensor_dev_attr_in2_max.dev_attr.attr, | |
5c726b3b | 578 | &sensor_dev_attr_in2_alarm.dev_attr.attr, |
1f5f48dd JD |
579 | &sensor_dev_attr_in3_input.dev_attr.attr, |
580 | &sensor_dev_attr_in3_min.dev_attr.attr, | |
581 | &sensor_dev_attr_in3_max.dev_attr.attr, | |
5c726b3b | 582 | &sensor_dev_attr_in3_alarm.dev_attr.attr, |
1f5f48dd JD |
583 | |
584 | &sensor_dev_attr_fan1_input.dev_attr.attr, | |
585 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
586 | &sensor_dev_attr_fan1_div.dev_attr.attr, | |
5c726b3b | 587 | &sensor_dev_attr_fan1_alarm.dev_attr.attr, |
1f5f48dd JD |
588 | &sensor_dev_attr_fan2_input.dev_attr.attr, |
589 | &sensor_dev_attr_fan2_min.dev_attr.attr, | |
590 | &sensor_dev_attr_fan2_div.dev_attr.attr, | |
5c726b3b | 591 | &sensor_dev_attr_fan2_alarm.dev_attr.attr, |
a5ebe668 JD |
592 | |
593 | &dev_attr_alarms.attr, | |
17e7dc43 | 594 | &dev_attr_name.attr, |
a5ebe668 JD |
595 | NULL |
596 | }; | |
597 | ||
598 | static const struct attribute_group sis5595_group = { | |
599 | .attrs = sis5595_attributes, | |
600 | }; | |
601 | ||
76e63860 | 602 | static struct attribute *sis5595_attributes_in4[] = { |
1f5f48dd JD |
603 | &sensor_dev_attr_in4_input.dev_attr.attr, |
604 | &sensor_dev_attr_in4_min.dev_attr.attr, | |
605 | &sensor_dev_attr_in4_max.dev_attr.attr, | |
5c726b3b | 606 | &sensor_dev_attr_in4_alarm.dev_attr.attr, |
76e63860 IM |
607 | NULL |
608 | }; | |
609 | ||
610 | static const struct attribute_group sis5595_group_in4 = { | |
611 | .attrs = sis5595_attributes_in4, | |
612 | }; | |
a5ebe668 | 613 | |
76e63860 | 614 | static struct attribute *sis5595_attributes_temp1[] = { |
a5ebe668 JD |
615 | &dev_attr_temp1_input.attr, |
616 | &dev_attr_temp1_max.attr, | |
617 | &dev_attr_temp1_max_hyst.attr, | |
5c726b3b | 618 | &sensor_dev_attr_temp1_alarm.dev_attr.attr, |
a5ebe668 JD |
619 | NULL |
620 | }; | |
621 | ||
76e63860 IM |
622 | static const struct attribute_group sis5595_group_temp1 = { |
623 | .attrs = sis5595_attributes_temp1, | |
a5ebe668 | 624 | }; |
8fda79ec | 625 | |
1b2f9b1e UKK |
626 | /* Called when we have found a new SIS5595. */ |
627 | static void sis5595_init_device(struct sis5595_data *data) | |
628 | { | |
629 | u8 config = sis5595_read_value(data, SIS5595_REG_CONFIG); | |
630 | if (!(config & 0x01)) | |
631 | sis5595_write_value(data, SIS5595_REG_CONFIG, | |
632 | (config & 0xf7) | 0x01); | |
633 | } | |
634 | ||
1da177e4 | 635 | /* This is called when the module is loaded */ |
6c931ae1 | 636 | static int sis5595_probe(struct platform_device *pdev) |
1da177e4 LT |
637 | { |
638 | int err = 0; | |
639 | int i; | |
1da177e4 | 640 | struct sis5595_data *data; |
17e7dc43 | 641 | struct resource *res; |
1da177e4 | 642 | char val; |
1da177e4 | 643 | |
1da177e4 | 644 | /* Reserve the ISA region */ |
17e7dc43 | 645 | res = platform_get_resource(pdev, IORESOURCE_IO, 0); |
5d224ade | 646 | if (!devm_request_region(&pdev->dev, res->start, SIS5595_EXTENT, |
847a3b04 | 647 | DRIVER_NAME)) |
5d224ade | 648 | return -EBUSY; |
1da177e4 | 649 | |
5d224ade GR |
650 | data = devm_kzalloc(&pdev->dev, sizeof(struct sis5595_data), |
651 | GFP_KERNEL); | |
652 | if (!data) | |
653 | return -ENOMEM; | |
1da177e4 | 654 | |
9a61bf63 | 655 | mutex_init(&data->lock); |
17e7dc43 JD |
656 | mutex_init(&data->update_lock); |
657 | data->addr = res->start; | |
847a3b04 | 658 | data->name = DRIVER_NAME; |
17e7dc43 | 659 | platform_set_drvdata(pdev, data); |
1da177e4 | 660 | |
8fda79ec GR |
661 | /* |
662 | * Check revision and pin registers to determine whether 4 or 5 voltages | |
663 | */ | |
7b6d1f04 | 664 | data->revision = s_bridge->revision; |
1da177e4 LT |
665 | /* 4 voltages, 1 temp */ |
666 | data->maxins = 3; | |
667 | if (data->revision >= REV2MIN) { | |
668 | pci_read_config_byte(s_bridge, SIS5595_PIN_REG, &val); | |
669 | if (!(val & 0x80)) | |
670 | /* 5 voltages, no temps */ | |
671 | data->maxins = 4; | |
672 | } | |
8fda79ec | 673 | |
1da177e4 | 674 | /* Initialize the SIS5595 chip */ |
17e7dc43 | 675 | sis5595_init_device(data); |
1da177e4 LT |
676 | |
677 | /* A few vars need to be filled upon startup */ | |
678 | for (i = 0; i < 2; i++) { | |
17e7dc43 | 679 | data->fan_min[i] = sis5595_read_value(data, |
1da177e4 LT |
680 | SIS5595_REG_FAN_MIN(i)); |
681 | } | |
682 | ||
683 | /* Register sysfs hooks */ | |
8fda79ec GR |
684 | err = sysfs_create_group(&pdev->dev.kobj, &sis5595_group); |
685 | if (err) | |
5d224ade | 686 | return err; |
a5ebe668 | 687 | if (data->maxins == 4) { |
8fda79ec GR |
688 | err = sysfs_create_group(&pdev->dev.kobj, &sis5595_group_in4); |
689 | if (err) | |
a5ebe668 JD |
690 | goto exit_remove_files; |
691 | } else { | |
8fda79ec GR |
692 | err = sysfs_create_group(&pdev->dev.kobj, &sis5595_group_temp1); |
693 | if (err) | |
a5ebe668 JD |
694 | goto exit_remove_files; |
695 | } | |
696 | ||
1beeffe4 TJ |
697 | data->hwmon_dev = hwmon_device_register(&pdev->dev); |
698 | if (IS_ERR(data->hwmon_dev)) { | |
699 | err = PTR_ERR(data->hwmon_dev); | |
a5ebe668 | 700 | goto exit_remove_files; |
943b0830 MH |
701 | } |
702 | ||
1da177e4 | 703 | return 0; |
943b0830 | 704 | |
a5ebe668 | 705 | exit_remove_files: |
17e7dc43 | 706 | sysfs_remove_group(&pdev->dev.kobj, &sis5595_group); |
76e63860 IM |
707 | sysfs_remove_group(&pdev->dev.kobj, &sis5595_group_in4); |
708 | sysfs_remove_group(&pdev->dev.kobj, &sis5595_group_temp1); | |
1da177e4 LT |
709 | return err; |
710 | } | |
711 | ||
281dfd0b | 712 | static int sis5595_remove(struct platform_device *pdev) |
1da177e4 | 713 | { |
17e7dc43 | 714 | struct sis5595_data *data = platform_get_drvdata(pdev); |
1da177e4 | 715 | |
1beeffe4 | 716 | hwmon_device_unregister(data->hwmon_dev); |
17e7dc43 | 717 | sysfs_remove_group(&pdev->dev.kobj, &sis5595_group); |
76e63860 IM |
718 | sysfs_remove_group(&pdev->dev.kobj, &sis5595_group_in4); |
719 | sysfs_remove_group(&pdev->dev.kobj, &sis5595_group_temp1); | |
1da177e4 | 720 | |
1da177e4 LT |
721 | return 0; |
722 | } | |
723 | ||
cd9bb056 | 724 | static const struct pci_device_id sis5595_pci_ids[] = { |
1da177e4 LT |
725 | { PCI_DEVICE(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503) }, |
726 | { 0, } | |
727 | }; | |
728 | ||
729 | MODULE_DEVICE_TABLE(pci, sis5595_pci_ids); | |
730 | ||
a5977246 | 731 | static int blacklist[] = { |
1da177e4 LT |
732 | PCI_DEVICE_ID_SI_540, |
733 | PCI_DEVICE_ID_SI_550, | |
734 | PCI_DEVICE_ID_SI_630, | |
735 | PCI_DEVICE_ID_SI_645, | |
736 | PCI_DEVICE_ID_SI_730, | |
737 | PCI_DEVICE_ID_SI_735, | |
8fda79ec GR |
738 | PCI_DEVICE_ID_SI_5511, /* |
739 | * 5513 chip has the 0008 device but | |
740 | * that ID shows up in other chips so we | |
741 | * use the 5511 ID for recognition | |
742 | */ | |
1da177e4 LT |
743 | PCI_DEVICE_ID_SI_5597, |
744 | PCI_DEVICE_ID_SI_5598, | |
745 | 0 }; | |
746 | ||
6c931ae1 | 747 | static int sis5595_device_add(unsigned short address) |
17e7dc43 JD |
748 | { |
749 | struct resource res = { | |
750 | .start = address, | |
751 | .end = address + SIS5595_EXTENT - 1, | |
847a3b04 | 752 | .name = DRIVER_NAME, |
17e7dc43 JD |
753 | .flags = IORESOURCE_IO, |
754 | }; | |
755 | int err; | |
756 | ||
b9acb64a JD |
757 | err = acpi_check_resource_conflict(&res); |
758 | if (err) | |
759 | goto exit; | |
760 | ||
847a3b04 | 761 | pdev = platform_device_alloc(DRIVER_NAME, address); |
17e7dc43 JD |
762 | if (!pdev) { |
763 | err = -ENOMEM; | |
4b2515db | 764 | pr_err("Device allocation failed\n"); |
17e7dc43 JD |
765 | goto exit; |
766 | } | |
767 | ||
768 | err = platform_device_add_resources(pdev, &res, 1); | |
769 | if (err) { | |
4b2515db | 770 | pr_err("Device resource addition failed (%d)\n", err); |
17e7dc43 JD |
771 | goto exit_device_put; |
772 | } | |
773 | ||
774 | err = platform_device_add(pdev); | |
775 | if (err) { | |
4b2515db | 776 | pr_err("Device addition failed (%d)\n", err); |
17e7dc43 JD |
777 | goto exit_device_put; |
778 | } | |
779 | ||
780 | return 0; | |
781 | ||
782 | exit_device_put: | |
783 | platform_device_put(pdev); | |
784 | exit: | |
785 | return err; | |
786 | } | |
787 | ||
1b2f9b1e UKK |
788 | static struct platform_driver sis5595_driver = { |
789 | .driver = { | |
790 | .name = DRIVER_NAME, | |
791 | }, | |
792 | .probe = sis5595_probe, | |
793 | .remove = sis5595_remove, | |
794 | }; | |
795 | ||
6c931ae1 | 796 | static int sis5595_pci_probe(struct pci_dev *dev, |
1da177e4 LT |
797 | const struct pci_device_id *id) |
798 | { | |
17e7dc43 JD |
799 | u16 address; |
800 | u8 enable; | |
1da177e4 | 801 | int *i; |
1da177e4 LT |
802 | |
803 | for (i = blacklist; *i != 0; i++) { | |
5460a9d0 | 804 | struct pci_dev *d; |
8fda79ec GR |
805 | d = pci_get_device(PCI_VENDOR_ID_SI, *i, NULL); |
806 | if (d) { | |
807 | dev_err(&d->dev, | |
808 | "Looked for SIS5595 but found unsupported device %.4x\n", | |
809 | *i); | |
5460a9d0 | 810 | pci_dev_put(d); |
1da177e4 LT |
811 | return -ENODEV; |
812 | } | |
813 | } | |
8fda79ec | 814 | |
17e7dc43 JD |
815 | force_addr &= ~(SIS5595_EXTENT - 1); |
816 | if (force_addr) { | |
817 | dev_warn(&dev->dev, "Forcing ISA address 0x%x\n", force_addr); | |
818 | pci_write_config_word(dev, SIS5595_BASE_REG, force_addr); | |
819 | } | |
820 | ||
1da177e4 | 821 | if (PCIBIOS_SUCCESSFUL != |
17e7dc43 JD |
822 | pci_read_config_word(dev, SIS5595_BASE_REG, &address)) { |
823 | dev_err(&dev->dev, "Failed to read ISA address\n"); | |
1da177e4 | 824 | return -ENODEV; |
17e7dc43 | 825 | } |
8fda79ec | 826 | |
17e7dc43 JD |
827 | address &= ~(SIS5595_EXTENT - 1); |
828 | if (!address) { | |
8fda79ec GR |
829 | dev_err(&dev->dev, |
830 | "Base address not set - upgrade BIOS or use force_addr=0xaddr\n"); | |
1da177e4 | 831 | return -ENODEV; |
1da177e4 | 832 | } |
17e7dc43 JD |
833 | if (force_addr && address != force_addr) { |
834 | /* doesn't work for some chips? */ | |
835 | dev_err(&dev->dev, "Failed to force ISA address\n"); | |
836 | return -ENODEV; | |
837 | } | |
1da177e4 | 838 | |
17e7dc43 JD |
839 | if (PCIBIOS_SUCCESSFUL != |
840 | pci_read_config_byte(dev, SIS5595_ENABLE_REG, &enable)) { | |
841 | dev_err(&dev->dev, "Failed to read enable register\n"); | |
842 | return -ENODEV; | |
843 | } | |
844 | if (!(enable & 0x80)) { | |
845 | if ((PCIBIOS_SUCCESSFUL != | |
846 | pci_write_config_byte(dev, SIS5595_ENABLE_REG, | |
847 | enable | 0x80)) | |
848 | || (PCIBIOS_SUCCESSFUL != | |
849 | pci_read_config_byte(dev, SIS5595_ENABLE_REG, &enable)) | |
850 | || (!(enable & 0x80))) { | |
851 | /* doesn't work for some chips! */ | |
852 | dev_err(&dev->dev, "Failed to enable HWM device\n"); | |
853 | return -ENODEV; | |
854 | } | |
1da177e4 LT |
855 | } |
856 | ||
17e7dc43 JD |
857 | if (platform_driver_register(&sis5595_driver)) { |
858 | dev_dbg(&dev->dev, "Failed to register sis5595 driver\n"); | |
859 | goto exit; | |
860 | } | |
861 | ||
862 | s_bridge = pci_dev_get(dev); | |
863 | /* Sets global pdev as a side effect */ | |
864 | if (sis5595_device_add(address)) | |
865 | goto exit_unregister; | |
866 | ||
8fda79ec GR |
867 | /* |
868 | * Always return failure here. This is to allow other drivers to bind | |
1da177e4 LT |
869 | * to this pci device. We don't really want to have control over the |
870 | * pci device, we only wanted to read as few register values from it. | |
871 | */ | |
872 | return -ENODEV; | |
17e7dc43 JD |
873 | |
874 | exit_unregister: | |
875 | pci_dev_put(dev); | |
876 | platform_driver_unregister(&sis5595_driver); | |
877 | exit: | |
878 | return -ENODEV; | |
1da177e4 LT |
879 | } |
880 | ||
881 | static struct pci_driver sis5595_pci_driver = { | |
847a3b04 | 882 | .name = DRIVER_NAME, |
1da177e4 LT |
883 | .id_table = sis5595_pci_ids, |
884 | .probe = sis5595_pci_probe, | |
885 | }; | |
886 | ||
887 | static int __init sm_sis5595_init(void) | |
888 | { | |
889 | return pci_register_driver(&sis5595_pci_driver); | |
890 | } | |
891 | ||
892 | static void __exit sm_sis5595_exit(void) | |
893 | { | |
894 | pci_unregister_driver(&sis5595_pci_driver); | |
895 | if (s_bridge != NULL) { | |
17e7dc43 JD |
896 | platform_device_unregister(pdev); |
897 | platform_driver_unregister(&sis5595_driver); | |
1da177e4 LT |
898 | pci_dev_put(s_bridge); |
899 | s_bridge = NULL; | |
900 | } | |
901 | } | |
902 | ||
903 | MODULE_AUTHOR("Aurelien Jarno <aurelien@aurel32.net>"); | |
904 | MODULE_DESCRIPTION("SiS 5595 Sensor device"); | |
905 | MODULE_LICENSE("GPL"); | |
906 | ||
907 | module_init(sm_sis5595_init); | |
908 | module_exit(sm_sis5595_exit); |