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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | it87.c - Part of lm_sensors, Linux kernel modules for hardware | |
3 | monitoring. | |
4 | ||
87b4b663 BH |
5 | The IT8705F is an LPC-based Super I/O part that contains UARTs, a |
6 | parallel port, an IR port, a MIDI port, a floppy controller, etc., in | |
7 | addition to an Environment Controller (Enhanced Hardware Monitor and | |
8 | Fan Controller) | |
9 | ||
10 | This driver supports only the Environment Controller in the IT8705F and | |
11 | similar parts. The other devices are supported by different drivers. | |
12 | ||
91749996 | 13 | Supports: IT8705F Super I/O chip w/LPC interface |
8e9afcbb | 14 | IT8712F Super I/O chip w/LPC interface |
17d648bf | 15 | IT8716F Super I/O chip w/LPC interface |
87673dd7 | 16 | IT8718F Super I/O chip w/LPC interface |
b4da93e4 | 17 | IT8720F Super I/O chip w/LPC interface |
08a8f6e9 | 18 | IT8726F Super I/O chip w/LPC interface |
1da177e4 LT |
19 | Sis950 A clone of the IT8705F |
20 | ||
f1d8e332 | 21 | Copyright (C) 2001 Chris Gauthron |
0124dd78 | 22 | Copyright (C) 2005-2007 Jean Delvare <khali@linux-fr.org> |
1da177e4 LT |
23 | |
24 | This program is free software; you can redistribute it and/or modify | |
25 | it under the terms of the GNU General Public License as published by | |
26 | the Free Software Foundation; either version 2 of the License, or | |
27 | (at your option) any later version. | |
28 | ||
29 | This program is distributed in the hope that it will be useful, | |
30 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
31 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
32 | GNU General Public License for more details. | |
33 | ||
34 | You should have received a copy of the GNU General Public License | |
35 | along with this program; if not, write to the Free Software | |
36 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
37 | */ | |
38 | ||
1da177e4 LT |
39 | #include <linux/module.h> |
40 | #include <linux/init.h> | |
41 | #include <linux/slab.h> | |
42 | #include <linux/jiffies.h> | |
b74f3fdd | 43 | #include <linux/platform_device.h> |
943b0830 | 44 | #include <linux/hwmon.h> |
303760b4 JD |
45 | #include <linux/hwmon-sysfs.h> |
46 | #include <linux/hwmon-vid.h> | |
943b0830 | 47 | #include <linux/err.h> |
9a61bf63 | 48 | #include <linux/mutex.h> |
87808be4 | 49 | #include <linux/sysfs.h> |
98dd22c3 JD |
50 | #include <linux/string.h> |
51 | #include <linux/dmi.h> | |
b9acb64a | 52 | #include <linux/acpi.h> |
1da177e4 LT |
53 | #include <asm/io.h> |
54 | ||
b74f3fdd | 55 | #define DRVNAME "it87" |
1da177e4 | 56 | |
b4da93e4 | 57 | enum chips { it87, it8712, it8716, it8718, it8720 }; |
1da177e4 | 58 | |
67b671bc JD |
59 | static unsigned short force_id; |
60 | module_param(force_id, ushort, 0); | |
61 | MODULE_PARM_DESC(force_id, "Override the detected device ID"); | |
62 | ||
b74f3fdd | 63 | static struct platform_device *pdev; |
64 | ||
1da177e4 LT |
65 | #define REG 0x2e /* The register to read/write */ |
66 | #define DEV 0x07 /* Register: Logical device select */ | |
67 | #define VAL 0x2f /* The value to read/write */ | |
68 | #define PME 0x04 /* The device with the fan registers in it */ | |
b4da93e4 JMS |
69 | |
70 | /* The device with the IT8718F/IT8720F VID value in it */ | |
71 | #define GPIO 0x07 | |
72 | ||
1da177e4 LT |
73 | #define DEVID 0x20 /* Register: Device ID */ |
74 | #define DEVREV 0x22 /* Register: Device Revision */ | |
75 | ||
76 | static inline int | |
77 | superio_inb(int reg) | |
78 | { | |
79 | outb(reg, REG); | |
80 | return inb(VAL); | |
81 | } | |
82 | ||
83 | static int superio_inw(int reg) | |
84 | { | |
85 | int val; | |
86 | outb(reg++, REG); | |
87 | val = inb(VAL) << 8; | |
88 | outb(reg, REG); | |
89 | val |= inb(VAL); | |
90 | return val; | |
91 | } | |
92 | ||
93 | static inline void | |
87673dd7 | 94 | superio_select(int ldn) |
1da177e4 LT |
95 | { |
96 | outb(DEV, REG); | |
87673dd7 | 97 | outb(ldn, VAL); |
1da177e4 LT |
98 | } |
99 | ||
100 | static inline void | |
101 | superio_enter(void) | |
102 | { | |
103 | outb(0x87, REG); | |
104 | outb(0x01, REG); | |
105 | outb(0x55, REG); | |
106 | outb(0x55, REG); | |
107 | } | |
108 | ||
109 | static inline void | |
110 | superio_exit(void) | |
111 | { | |
112 | outb(0x02, REG); | |
113 | outb(0x02, VAL); | |
114 | } | |
115 | ||
87673dd7 | 116 | /* Logical device 4 registers */ |
1da177e4 LT |
117 | #define IT8712F_DEVID 0x8712 |
118 | #define IT8705F_DEVID 0x8705 | |
17d648bf | 119 | #define IT8716F_DEVID 0x8716 |
87673dd7 | 120 | #define IT8718F_DEVID 0x8718 |
b4da93e4 | 121 | #define IT8720F_DEVID 0x8720 |
08a8f6e9 | 122 | #define IT8726F_DEVID 0x8726 |
1da177e4 LT |
123 | #define IT87_ACT_REG 0x30 |
124 | #define IT87_BASE_REG 0x60 | |
125 | ||
87673dd7 JD |
126 | /* Logical device 7 registers (IT8712F and later) */ |
127 | #define IT87_SIO_PINX2_REG 0x2c /* Pin selection */ | |
128 | #define IT87_SIO_VID_REG 0xfc /* VID value */ | |
129 | ||
1da177e4 LT |
130 | /* Update battery voltage after every reading if true */ |
131 | static int update_vbat; | |
132 | ||
133 | /* Not all BIOSes properly configure the PWM registers */ | |
134 | static int fix_pwm_polarity; | |
135 | ||
1da177e4 LT |
136 | /* Many IT87 constants specified below */ |
137 | ||
138 | /* Length of ISA address segment */ | |
139 | #define IT87_EXTENT 8 | |
140 | ||
87b4b663 BH |
141 | /* Length of ISA address segment for Environmental Controller */ |
142 | #define IT87_EC_EXTENT 2 | |
143 | ||
144 | /* Offset of EC registers from ISA base address */ | |
145 | #define IT87_EC_OFFSET 5 | |
146 | ||
147 | /* Where are the ISA address/data registers relative to the EC base address */ | |
148 | #define IT87_ADDR_REG_OFFSET 0 | |
149 | #define IT87_DATA_REG_OFFSET 1 | |
1da177e4 LT |
150 | |
151 | /*----- The IT87 registers -----*/ | |
152 | ||
153 | #define IT87_REG_CONFIG 0x00 | |
154 | ||
155 | #define IT87_REG_ALARM1 0x01 | |
156 | #define IT87_REG_ALARM2 0x02 | |
157 | #define IT87_REG_ALARM3 0x03 | |
158 | ||
b4da93e4 JMS |
159 | /* The IT8718F and IT8720F have the VID value in a different register, in |
160 | Super-I/O configuration space. */ | |
1da177e4 | 161 | #define IT87_REG_VID 0x0a |
0475169c AP |
162 | /* The IT8705F and IT8712F earlier than revision 0x08 use register 0x0b |
163 | for fan divisors. Later IT8712F revisions must use 16-bit tachometer | |
164 | mode. */ | |
1da177e4 | 165 | #define IT87_REG_FAN_DIV 0x0b |
17d648bf | 166 | #define IT87_REG_FAN_16BIT 0x0c |
1da177e4 LT |
167 | |
168 | /* Monitors: 9 voltage (0 to 7, battery), 3 temp (1 to 3), 3 fan (1 to 3) */ | |
169 | ||
c7f1f716 JD |
170 | static const u8 IT87_REG_FAN[] = { 0x0d, 0x0e, 0x0f, 0x80, 0x82 }; |
171 | static const u8 IT87_REG_FAN_MIN[] = { 0x10, 0x11, 0x12, 0x84, 0x86 }; | |
172 | static const u8 IT87_REG_FANX[] = { 0x18, 0x19, 0x1a, 0x81, 0x83 }; | |
173 | static const u8 IT87_REG_FANX_MIN[] = { 0x1b, 0x1c, 0x1d, 0x85, 0x87 }; | |
1da177e4 LT |
174 | #define IT87_REG_FAN_MAIN_CTRL 0x13 |
175 | #define IT87_REG_FAN_CTL 0x14 | |
176 | #define IT87_REG_PWM(nr) (0x15 + (nr)) | |
177 | ||
178 | #define IT87_REG_VIN(nr) (0x20 + (nr)) | |
179 | #define IT87_REG_TEMP(nr) (0x29 + (nr)) | |
180 | ||
181 | #define IT87_REG_VIN_MAX(nr) (0x30 + (nr) * 2) | |
182 | #define IT87_REG_VIN_MIN(nr) (0x31 + (nr) * 2) | |
183 | #define IT87_REG_TEMP_HIGH(nr) (0x40 + (nr) * 2) | |
184 | #define IT87_REG_TEMP_LOW(nr) (0x41 + (nr) * 2) | |
185 | ||
1da177e4 LT |
186 | #define IT87_REG_VIN_ENABLE 0x50 |
187 | #define IT87_REG_TEMP_ENABLE 0x51 | |
188 | ||
189 | #define IT87_REG_CHIPID 0x58 | |
190 | ||
191 | #define IN_TO_REG(val) (SENSORS_LIMIT((((val) + 8)/16),0,255)) | |
192 | #define IN_FROM_REG(val) ((val) * 16) | |
193 | ||
194 | static inline u8 FAN_TO_REG(long rpm, int div) | |
195 | { | |
196 | if (rpm == 0) | |
197 | return 255; | |
198 | rpm = SENSORS_LIMIT(rpm, 1, 1000000); | |
199 | return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, | |
200 | 254); | |
201 | } | |
202 | ||
17d648bf JD |
203 | static inline u16 FAN16_TO_REG(long rpm) |
204 | { | |
205 | if (rpm == 0) | |
206 | return 0xffff; | |
207 | return SENSORS_LIMIT((1350000 + rpm) / (rpm * 2), 1, 0xfffe); | |
208 | } | |
209 | ||
1da177e4 | 210 | #define FAN_FROM_REG(val,div) ((val)==0?-1:(val)==255?0:1350000/((val)*(div))) |
17d648bf JD |
211 | /* The divider is fixed to 2 in 16-bit mode */ |
212 | #define FAN16_FROM_REG(val) ((val)==0?-1:(val)==0xffff?0:1350000/((val)*2)) | |
1da177e4 LT |
213 | |
214 | #define TEMP_TO_REG(val) (SENSORS_LIMIT(((val)<0?(((val)-500)/1000):\ | |
215 | ((val)+500)/1000),-128,127)) | |
e267d250 | 216 | #define TEMP_FROM_REG(val) ((val) * 1000) |
1da177e4 | 217 | |
1da177e4 LT |
218 | #define PWM_TO_REG(val) ((val) >> 1) |
219 | #define PWM_FROM_REG(val) (((val)&0x7f) << 1) | |
220 | ||
221 | static int DIV_TO_REG(int val) | |
222 | { | |
223 | int answer = 0; | |
b9e349f7 | 224 | while (answer < 7 && (val >>= 1)) |
1da177e4 LT |
225 | answer++; |
226 | return answer; | |
227 | } | |
228 | #define DIV_FROM_REG(val) (1 << (val)) | |
229 | ||
f8d0c19a JD |
230 | static const unsigned int pwm_freq[8] = { |
231 | 48000000 / 128, | |
232 | 24000000 / 128, | |
233 | 12000000 / 128, | |
234 | 8000000 / 128, | |
235 | 6000000 / 128, | |
236 | 3000000 / 128, | |
237 | 1500000 / 128, | |
238 | 750000 / 128, | |
239 | }; | |
240 | ||
1da177e4 | 241 | |
b74f3fdd | 242 | struct it87_sio_data { |
243 | enum chips type; | |
244 | /* Values read from Super-I/O config space */ | |
0475169c | 245 | u8 revision; |
b74f3fdd | 246 | u8 vid_value; |
98dd22c3 JD |
247 | /* Values set based on DMI strings */ |
248 | u8 skip_pwm; | |
b74f3fdd | 249 | }; |
250 | ||
ed6bafbf JD |
251 | /* For each registered chip, we need to keep some data in memory. |
252 | The structure is dynamically allocated. */ | |
1da177e4 | 253 | struct it87_data { |
1beeffe4 | 254 | struct device *hwmon_dev; |
1da177e4 | 255 | enum chips type; |
0475169c | 256 | u8 revision; |
1da177e4 | 257 | |
b74f3fdd | 258 | unsigned short addr; |
259 | const char *name; | |
9a61bf63 | 260 | struct mutex update_lock; |
1da177e4 LT |
261 | char valid; /* !=0 if following fields are valid */ |
262 | unsigned long last_updated; /* In jiffies */ | |
263 | ||
264 | u8 in[9]; /* Register value */ | |
3543a53f JD |
265 | u8 in_max[8]; /* Register value */ |
266 | u8 in_min[8]; /* Register value */ | |
9060f8bd | 267 | u8 has_fan; /* Bitfield, fans enabled */ |
c7f1f716 JD |
268 | u16 fan[5]; /* Register values, possibly combined */ |
269 | u16 fan_min[5]; /* Register values, possibly combined */ | |
e267d250 JD |
270 | s8 temp[3]; /* Register value */ |
271 | s8 temp_high[3]; /* Register value */ | |
272 | s8 temp_low[3]; /* Register value */ | |
1da177e4 LT |
273 | u8 sensor; /* Register value */ |
274 | u8 fan_div[3]; /* Register encoding, shifted right */ | |
275 | u8 vid; /* Register encoding, combined */ | |
a7be58a1 | 276 | u8 vrm; |
1da177e4 LT |
277 | u32 alarms; /* Register encoding, combined */ |
278 | u8 fan_main_ctrl; /* Register value */ | |
f8d0c19a | 279 | u8 fan_ctl; /* Register value */ |
1da177e4 LT |
280 | u8 manual_pwm_ctl[3]; /* manual PWM value set by user */ |
281 | }; | |
282 | ||
0475169c AP |
283 | static inline int has_16bit_fans(const struct it87_data *data) |
284 | { | |
816d8c6a | 285 | /* IT8705F Datasheet 0.4.1, 3h == Version G. |
859b9ef3 | 286 | IT8712F Datasheet 0.9.1, section 8.3.5 indicates 8h == Version J. |
816d8c6a AP |
287 | These are the first revisions with 16bit tachometer support. */ |
288 | return (data->type == it87 && data->revision >= 0x03) | |
859b9ef3 | 289 | || (data->type == it8712 && data->revision >= 0x08) |
0475169c | 290 | || data->type == it8716 |
b4da93e4 JMS |
291 | || data->type == it8718 |
292 | || data->type == it8720; | |
0475169c | 293 | } |
1da177e4 | 294 | |
b74f3fdd | 295 | static int it87_probe(struct platform_device *pdev); |
d0546128 | 296 | static int __devexit it87_remove(struct platform_device *pdev); |
1da177e4 | 297 | |
b74f3fdd | 298 | static int it87_read_value(struct it87_data *data, u8 reg); |
299 | static void it87_write_value(struct it87_data *data, u8 reg, u8 value); | |
1da177e4 | 300 | static struct it87_data *it87_update_device(struct device *dev); |
b74f3fdd | 301 | static int it87_check_pwm(struct device *dev); |
302 | static void it87_init_device(struct platform_device *pdev); | |
1da177e4 LT |
303 | |
304 | ||
b74f3fdd | 305 | static struct platform_driver it87_driver = { |
cdaf7934 | 306 | .driver = { |
87218842 | 307 | .owner = THIS_MODULE, |
b74f3fdd | 308 | .name = DRVNAME, |
cdaf7934 | 309 | }, |
b74f3fdd | 310 | .probe = it87_probe, |
311 | .remove = __devexit_p(it87_remove), | |
fde09509 JD |
312 | }; |
313 | ||
20ad93d4 JD |
314 | static ssize_t show_in(struct device *dev, struct device_attribute *attr, |
315 | char *buf) | |
1da177e4 | 316 | { |
20ad93d4 JD |
317 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
318 | int nr = sensor_attr->index; | |
319 | ||
1da177e4 LT |
320 | struct it87_data *data = it87_update_device(dev); |
321 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr])); | |
322 | } | |
323 | ||
20ad93d4 JD |
324 | static ssize_t show_in_min(struct device *dev, struct device_attribute *attr, |
325 | char *buf) | |
1da177e4 | 326 | { |
20ad93d4 JD |
327 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
328 | int nr = sensor_attr->index; | |
329 | ||
1da177e4 LT |
330 | struct it87_data *data = it87_update_device(dev); |
331 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr])); | |
332 | } | |
333 | ||
20ad93d4 JD |
334 | static ssize_t show_in_max(struct device *dev, struct device_attribute *attr, |
335 | char *buf) | |
1da177e4 | 336 | { |
20ad93d4 JD |
337 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
338 | int nr = sensor_attr->index; | |
339 | ||
1da177e4 LT |
340 | struct it87_data *data = it87_update_device(dev); |
341 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr])); | |
342 | } | |
343 | ||
20ad93d4 JD |
344 | static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, |
345 | const char *buf, size_t count) | |
1da177e4 | 346 | { |
20ad93d4 JD |
347 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
348 | int nr = sensor_attr->index; | |
349 | ||
b74f3fdd | 350 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
351 | unsigned long val = simple_strtoul(buf, NULL, 10); |
352 | ||
9a61bf63 | 353 | mutex_lock(&data->update_lock); |
1da177e4 | 354 | data->in_min[nr] = IN_TO_REG(val); |
b74f3fdd | 355 | it87_write_value(data, IT87_REG_VIN_MIN(nr), |
1da177e4 | 356 | data->in_min[nr]); |
9a61bf63 | 357 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
358 | return count; |
359 | } | |
20ad93d4 JD |
360 | static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, |
361 | const char *buf, size_t count) | |
1da177e4 | 362 | { |
20ad93d4 JD |
363 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
364 | int nr = sensor_attr->index; | |
365 | ||
b74f3fdd | 366 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
367 | unsigned long val = simple_strtoul(buf, NULL, 10); |
368 | ||
9a61bf63 | 369 | mutex_lock(&data->update_lock); |
1da177e4 | 370 | data->in_max[nr] = IN_TO_REG(val); |
b74f3fdd | 371 | it87_write_value(data, IT87_REG_VIN_MAX(nr), |
1da177e4 | 372 | data->in_max[nr]); |
9a61bf63 | 373 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
374 | return count; |
375 | } | |
376 | ||
377 | #define show_in_offset(offset) \ | |
20ad93d4 JD |
378 | static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ |
379 | show_in, NULL, offset); | |
1da177e4 LT |
380 | |
381 | #define limit_in_offset(offset) \ | |
20ad93d4 JD |
382 | static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ |
383 | show_in_min, set_in_min, offset); \ | |
384 | static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ | |
385 | show_in_max, set_in_max, offset); | |
1da177e4 LT |
386 | |
387 | show_in_offset(0); | |
388 | limit_in_offset(0); | |
389 | show_in_offset(1); | |
390 | limit_in_offset(1); | |
391 | show_in_offset(2); | |
392 | limit_in_offset(2); | |
393 | show_in_offset(3); | |
394 | limit_in_offset(3); | |
395 | show_in_offset(4); | |
396 | limit_in_offset(4); | |
397 | show_in_offset(5); | |
398 | limit_in_offset(5); | |
399 | show_in_offset(6); | |
400 | limit_in_offset(6); | |
401 | show_in_offset(7); | |
402 | limit_in_offset(7); | |
403 | show_in_offset(8); | |
404 | ||
405 | /* 3 temperatures */ | |
20ad93d4 JD |
406 | static ssize_t show_temp(struct device *dev, struct device_attribute *attr, |
407 | char *buf) | |
1da177e4 | 408 | { |
20ad93d4 JD |
409 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
410 | int nr = sensor_attr->index; | |
411 | ||
1da177e4 LT |
412 | struct it87_data *data = it87_update_device(dev); |
413 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr])); | |
414 | } | |
20ad93d4 JD |
415 | static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr, |
416 | char *buf) | |
1da177e4 | 417 | { |
20ad93d4 JD |
418 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
419 | int nr = sensor_attr->index; | |
420 | ||
1da177e4 LT |
421 | struct it87_data *data = it87_update_device(dev); |
422 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[nr])); | |
423 | } | |
20ad93d4 JD |
424 | static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr, |
425 | char *buf) | |
1da177e4 | 426 | { |
20ad93d4 JD |
427 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
428 | int nr = sensor_attr->index; | |
429 | ||
1da177e4 LT |
430 | struct it87_data *data = it87_update_device(dev); |
431 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_low[nr])); | |
432 | } | |
20ad93d4 JD |
433 | static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, |
434 | const char *buf, size_t count) | |
1da177e4 | 435 | { |
20ad93d4 JD |
436 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
437 | int nr = sensor_attr->index; | |
438 | ||
b74f3fdd | 439 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
440 | int val = simple_strtol(buf, NULL, 10); |
441 | ||
9a61bf63 | 442 | mutex_lock(&data->update_lock); |
1da177e4 | 443 | data->temp_high[nr] = TEMP_TO_REG(val); |
b74f3fdd | 444 | it87_write_value(data, IT87_REG_TEMP_HIGH(nr), data->temp_high[nr]); |
9a61bf63 | 445 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
446 | return count; |
447 | } | |
20ad93d4 JD |
448 | static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr, |
449 | const char *buf, size_t count) | |
1da177e4 | 450 | { |
20ad93d4 JD |
451 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
452 | int nr = sensor_attr->index; | |
453 | ||
b74f3fdd | 454 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
455 | int val = simple_strtol(buf, NULL, 10); |
456 | ||
9a61bf63 | 457 | mutex_lock(&data->update_lock); |
1da177e4 | 458 | data->temp_low[nr] = TEMP_TO_REG(val); |
b74f3fdd | 459 | it87_write_value(data, IT87_REG_TEMP_LOW(nr), data->temp_low[nr]); |
9a61bf63 | 460 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
461 | return count; |
462 | } | |
463 | #define show_temp_offset(offset) \ | |
20ad93d4 JD |
464 | static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ |
465 | show_temp, NULL, offset - 1); \ | |
466 | static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ | |
467 | show_temp_max, set_temp_max, offset - 1); \ | |
468 | static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ | |
469 | show_temp_min, set_temp_min, offset - 1); | |
1da177e4 LT |
470 | |
471 | show_temp_offset(1); | |
472 | show_temp_offset(2); | |
473 | show_temp_offset(3); | |
474 | ||
20ad93d4 JD |
475 | static ssize_t show_sensor(struct device *dev, struct device_attribute *attr, |
476 | char *buf) | |
1da177e4 | 477 | { |
20ad93d4 JD |
478 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
479 | int nr = sensor_attr->index; | |
480 | ||
1da177e4 LT |
481 | struct it87_data *data = it87_update_device(dev); |
482 | u8 reg = data->sensor; /* In case the value is updated while we use it */ | |
483 | ||
484 | if (reg & (1 << nr)) | |
485 | return sprintf(buf, "3\n"); /* thermal diode */ | |
486 | if (reg & (8 << nr)) | |
4ed10779 | 487 | return sprintf(buf, "4\n"); /* thermistor */ |
1da177e4 LT |
488 | return sprintf(buf, "0\n"); /* disabled */ |
489 | } | |
20ad93d4 JD |
490 | static ssize_t set_sensor(struct device *dev, struct device_attribute *attr, |
491 | const char *buf, size_t count) | |
1da177e4 | 492 | { |
20ad93d4 JD |
493 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
494 | int nr = sensor_attr->index; | |
495 | ||
b74f3fdd | 496 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
497 | int val = simple_strtol(buf, NULL, 10); |
498 | ||
9a61bf63 | 499 | mutex_lock(&data->update_lock); |
1da177e4 LT |
500 | |
501 | data->sensor &= ~(1 << nr); | |
502 | data->sensor &= ~(8 << nr); | |
4ed10779 JD |
503 | if (val == 2) { /* backwards compatibility */ |
504 | dev_warn(dev, "Sensor type 2 is deprecated, please use 4 " | |
505 | "instead\n"); | |
506 | val = 4; | |
507 | } | |
508 | /* 3 = thermal diode; 4 = thermistor; 0 = disabled */ | |
1da177e4 LT |
509 | if (val == 3) |
510 | data->sensor |= 1 << nr; | |
4ed10779 | 511 | else if (val == 4) |
1da177e4 LT |
512 | data->sensor |= 8 << nr; |
513 | else if (val != 0) { | |
9a61bf63 | 514 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
515 | return -EINVAL; |
516 | } | |
b74f3fdd | 517 | it87_write_value(data, IT87_REG_TEMP_ENABLE, data->sensor); |
9a61bf63 | 518 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
519 | return count; |
520 | } | |
521 | #define show_sensor_offset(offset) \ | |
20ad93d4 JD |
522 | static SENSOR_DEVICE_ATTR(temp##offset##_type, S_IRUGO | S_IWUSR, \ |
523 | show_sensor, set_sensor, offset - 1); | |
1da177e4 LT |
524 | |
525 | show_sensor_offset(1); | |
526 | show_sensor_offset(2); | |
527 | show_sensor_offset(3); | |
528 | ||
529 | /* 3 Fans */ | |
20ad93d4 JD |
530 | static ssize_t show_fan(struct device *dev, struct device_attribute *attr, |
531 | char *buf) | |
1da177e4 | 532 | { |
20ad93d4 JD |
533 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
534 | int nr = sensor_attr->index; | |
535 | ||
1da177e4 LT |
536 | struct it87_data *data = it87_update_device(dev); |
537 | return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan[nr], | |
538 | DIV_FROM_REG(data->fan_div[nr]))); | |
539 | } | |
20ad93d4 JD |
540 | static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr, |
541 | char *buf) | |
1da177e4 | 542 | { |
20ad93d4 JD |
543 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
544 | int nr = sensor_attr->index; | |
545 | ||
1da177e4 LT |
546 | struct it87_data *data = it87_update_device(dev); |
547 | return sprintf(buf,"%d\n", | |
548 | FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr]))); | |
549 | } | |
20ad93d4 JD |
550 | static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr, |
551 | char *buf) | |
1da177e4 | 552 | { |
20ad93d4 JD |
553 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
554 | int nr = sensor_attr->index; | |
555 | ||
1da177e4 LT |
556 | struct it87_data *data = it87_update_device(dev); |
557 | return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr])); | |
558 | } | |
20ad93d4 JD |
559 | static ssize_t show_pwm_enable(struct device *dev, struct device_attribute *attr, |
560 | char *buf) | |
1da177e4 | 561 | { |
20ad93d4 JD |
562 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
563 | int nr = sensor_attr->index; | |
564 | ||
1da177e4 LT |
565 | struct it87_data *data = it87_update_device(dev); |
566 | return sprintf(buf,"%d\n", (data->fan_main_ctrl & (1 << nr)) ? 1 : 0); | |
567 | } | |
20ad93d4 JD |
568 | static ssize_t show_pwm(struct device *dev, struct device_attribute *attr, |
569 | char *buf) | |
1da177e4 | 570 | { |
20ad93d4 JD |
571 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
572 | int nr = sensor_attr->index; | |
573 | ||
1da177e4 LT |
574 | struct it87_data *data = it87_update_device(dev); |
575 | return sprintf(buf,"%d\n", data->manual_pwm_ctl[nr]); | |
576 | } | |
f8d0c19a JD |
577 | static ssize_t show_pwm_freq(struct device *dev, struct device_attribute *attr, |
578 | char *buf) | |
579 | { | |
580 | struct it87_data *data = it87_update_device(dev); | |
581 | int index = (data->fan_ctl >> 4) & 0x07; | |
582 | ||
583 | return sprintf(buf, "%u\n", pwm_freq[index]); | |
584 | } | |
20ad93d4 JD |
585 | static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, |
586 | const char *buf, size_t count) | |
1da177e4 | 587 | { |
20ad93d4 JD |
588 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
589 | int nr = sensor_attr->index; | |
590 | ||
b74f3fdd | 591 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 | 592 | int val = simple_strtol(buf, NULL, 10); |
7f999aa7 | 593 | u8 reg; |
1da177e4 | 594 | |
9a61bf63 | 595 | mutex_lock(&data->update_lock); |
b74f3fdd | 596 | reg = it87_read_value(data, IT87_REG_FAN_DIV); |
07eab46d JD |
597 | switch (nr) { |
598 | case 0: data->fan_div[nr] = reg & 0x07; break; | |
599 | case 1: data->fan_div[nr] = (reg >> 3) & 0x07; break; | |
600 | case 2: data->fan_div[nr] = (reg & 0x40) ? 3 : 1; break; | |
601 | } | |
602 | ||
1da177e4 | 603 | data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); |
c7f1f716 | 604 | it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan_min[nr]); |
9a61bf63 | 605 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
606 | return count; |
607 | } | |
20ad93d4 JD |
608 | static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, |
609 | const char *buf, size_t count) | |
1da177e4 | 610 | { |
20ad93d4 JD |
611 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
612 | int nr = sensor_attr->index; | |
613 | ||
b74f3fdd | 614 | struct it87_data *data = dev_get_drvdata(dev); |
b9e349f7 | 615 | unsigned long val = simple_strtoul(buf, NULL, 10); |
8ab4ec3e | 616 | int min; |
1da177e4 LT |
617 | u8 old; |
618 | ||
9a61bf63 | 619 | mutex_lock(&data->update_lock); |
b74f3fdd | 620 | old = it87_read_value(data, IT87_REG_FAN_DIV); |
1da177e4 | 621 | |
8ab4ec3e JD |
622 | /* Save fan min limit */ |
623 | min = FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr])); | |
1da177e4 LT |
624 | |
625 | switch (nr) { | |
626 | case 0: | |
627 | case 1: | |
628 | data->fan_div[nr] = DIV_TO_REG(val); | |
629 | break; | |
630 | case 2: | |
631 | if (val < 8) | |
632 | data->fan_div[nr] = 1; | |
633 | else | |
634 | data->fan_div[nr] = 3; | |
635 | } | |
636 | val = old & 0x80; | |
637 | val |= (data->fan_div[0] & 0x07); | |
638 | val |= (data->fan_div[1] & 0x07) << 3; | |
639 | if (data->fan_div[2] == 3) | |
640 | val |= 0x1 << 6; | |
b74f3fdd | 641 | it87_write_value(data, IT87_REG_FAN_DIV, val); |
1da177e4 | 642 | |
8ab4ec3e JD |
643 | /* Restore fan min limit */ |
644 | data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); | |
c7f1f716 | 645 | it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan_min[nr]); |
8ab4ec3e | 646 | |
9a61bf63 | 647 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
648 | return count; |
649 | } | |
20ad93d4 JD |
650 | static ssize_t set_pwm_enable(struct device *dev, |
651 | struct device_attribute *attr, const char *buf, size_t count) | |
1da177e4 | 652 | { |
20ad93d4 JD |
653 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
654 | int nr = sensor_attr->index; | |
655 | ||
b74f3fdd | 656 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
657 | int val = simple_strtol(buf, NULL, 10); |
658 | ||
9a61bf63 | 659 | mutex_lock(&data->update_lock); |
1da177e4 LT |
660 | |
661 | if (val == 0) { | |
662 | int tmp; | |
663 | /* make sure the fan is on when in on/off mode */ | |
b74f3fdd | 664 | tmp = it87_read_value(data, IT87_REG_FAN_CTL); |
665 | it87_write_value(data, IT87_REG_FAN_CTL, tmp | (1 << nr)); | |
1da177e4 LT |
666 | /* set on/off mode */ |
667 | data->fan_main_ctrl &= ~(1 << nr); | |
b74f3fdd | 668 | it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl); |
1da177e4 LT |
669 | } else if (val == 1) { |
670 | /* set SmartGuardian mode */ | |
671 | data->fan_main_ctrl |= (1 << nr); | |
b74f3fdd | 672 | it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl); |
1da177e4 | 673 | /* set saved pwm value, clear FAN_CTLX PWM mode bit */ |
b74f3fdd | 674 | it87_write_value(data, IT87_REG_PWM(nr), PWM_TO_REG(data->manual_pwm_ctl[nr])); |
1da177e4 | 675 | } else { |
9a61bf63 | 676 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
677 | return -EINVAL; |
678 | } | |
679 | ||
9a61bf63 | 680 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
681 | return count; |
682 | } | |
20ad93d4 JD |
683 | static ssize_t set_pwm(struct device *dev, struct device_attribute *attr, |
684 | const char *buf, size_t count) | |
1da177e4 | 685 | { |
20ad93d4 JD |
686 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
687 | int nr = sensor_attr->index; | |
688 | ||
b74f3fdd | 689 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
690 | int val = simple_strtol(buf, NULL, 10); |
691 | ||
692 | if (val < 0 || val > 255) | |
693 | return -EINVAL; | |
694 | ||
9a61bf63 | 695 | mutex_lock(&data->update_lock); |
1da177e4 LT |
696 | data->manual_pwm_ctl[nr] = val; |
697 | if (data->fan_main_ctrl & (1 << nr)) | |
b74f3fdd | 698 | it87_write_value(data, IT87_REG_PWM(nr), PWM_TO_REG(data->manual_pwm_ctl[nr])); |
9a61bf63 | 699 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
700 | return count; |
701 | } | |
f8d0c19a JD |
702 | static ssize_t set_pwm_freq(struct device *dev, |
703 | struct device_attribute *attr, const char *buf, size_t count) | |
704 | { | |
b74f3fdd | 705 | struct it87_data *data = dev_get_drvdata(dev); |
f8d0c19a JD |
706 | unsigned long val = simple_strtoul(buf, NULL, 10); |
707 | int i; | |
708 | ||
709 | /* Search for the nearest available frequency */ | |
710 | for (i = 0; i < 7; i++) { | |
711 | if (val > (pwm_freq[i] + pwm_freq[i+1]) / 2) | |
712 | break; | |
713 | } | |
714 | ||
715 | mutex_lock(&data->update_lock); | |
b74f3fdd | 716 | data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL) & 0x8f; |
f8d0c19a | 717 | data->fan_ctl |= i << 4; |
b74f3fdd | 718 | it87_write_value(data, IT87_REG_FAN_CTL, data->fan_ctl); |
f8d0c19a JD |
719 | mutex_unlock(&data->update_lock); |
720 | ||
721 | return count; | |
722 | } | |
1da177e4 | 723 | |
20ad93d4 JD |
724 | #define show_fan_offset(offset) \ |
725 | static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ | |
726 | show_fan, NULL, offset - 1); \ | |
727 | static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ | |
728 | show_fan_min, set_fan_min, offset - 1); \ | |
729 | static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ | |
730 | show_fan_div, set_fan_div, offset - 1); | |
1da177e4 LT |
731 | |
732 | show_fan_offset(1); | |
733 | show_fan_offset(2); | |
734 | show_fan_offset(3); | |
735 | ||
736 | #define show_pwm_offset(offset) \ | |
20ad93d4 JD |
737 | static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \ |
738 | show_pwm_enable, set_pwm_enable, offset - 1); \ | |
739 | static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \ | |
f8d0c19a JD |
740 | show_pwm, set_pwm, offset - 1); \ |
741 | static DEVICE_ATTR(pwm##offset##_freq, \ | |
742 | (offset == 1 ? S_IRUGO | S_IWUSR : S_IRUGO), \ | |
743 | show_pwm_freq, (offset == 1 ? set_pwm_freq : NULL)); | |
1da177e4 LT |
744 | |
745 | show_pwm_offset(1); | |
746 | show_pwm_offset(2); | |
747 | show_pwm_offset(3); | |
748 | ||
17d648bf JD |
749 | /* A different set of callbacks for 16-bit fans */ |
750 | static ssize_t show_fan16(struct device *dev, struct device_attribute *attr, | |
751 | char *buf) | |
752 | { | |
753 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
754 | int nr = sensor_attr->index; | |
755 | struct it87_data *data = it87_update_device(dev); | |
756 | return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan[nr])); | |
757 | } | |
758 | ||
759 | static ssize_t show_fan16_min(struct device *dev, struct device_attribute *attr, | |
760 | char *buf) | |
761 | { | |
762 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
763 | int nr = sensor_attr->index; | |
764 | struct it87_data *data = it87_update_device(dev); | |
765 | return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan_min[nr])); | |
766 | } | |
767 | ||
768 | static ssize_t set_fan16_min(struct device *dev, struct device_attribute *attr, | |
769 | const char *buf, size_t count) | |
770 | { | |
771 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
772 | int nr = sensor_attr->index; | |
b74f3fdd | 773 | struct it87_data *data = dev_get_drvdata(dev); |
17d648bf JD |
774 | int val = simple_strtol(buf, NULL, 10); |
775 | ||
776 | mutex_lock(&data->update_lock); | |
777 | data->fan_min[nr] = FAN16_TO_REG(val); | |
c7f1f716 | 778 | it87_write_value(data, IT87_REG_FAN_MIN[nr], |
17d648bf | 779 | data->fan_min[nr] & 0xff); |
c7f1f716 | 780 | it87_write_value(data, IT87_REG_FANX_MIN[nr], |
17d648bf JD |
781 | data->fan_min[nr] >> 8); |
782 | mutex_unlock(&data->update_lock); | |
783 | return count; | |
784 | } | |
785 | ||
786 | /* We want to use the same sysfs file names as 8-bit fans, but we need | |
787 | different variable names, so we have to use SENSOR_ATTR instead of | |
788 | SENSOR_DEVICE_ATTR. */ | |
789 | #define show_fan16_offset(offset) \ | |
790 | static struct sensor_device_attribute sensor_dev_attr_fan##offset##_input16 \ | |
791 | = SENSOR_ATTR(fan##offset##_input, S_IRUGO, \ | |
792 | show_fan16, NULL, offset - 1); \ | |
793 | static struct sensor_device_attribute sensor_dev_attr_fan##offset##_min16 \ | |
794 | = SENSOR_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ | |
795 | show_fan16_min, set_fan16_min, offset - 1) | |
796 | ||
797 | show_fan16_offset(1); | |
798 | show_fan16_offset(2); | |
799 | show_fan16_offset(3); | |
c7f1f716 JD |
800 | show_fan16_offset(4); |
801 | show_fan16_offset(5); | |
17d648bf | 802 | |
1da177e4 | 803 | /* Alarms */ |
30f74292 | 804 | static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
805 | { |
806 | struct it87_data *data = it87_update_device(dev); | |
68188ba7 | 807 | return sprintf(buf, "%u\n", data->alarms); |
1da177e4 | 808 | } |
1d66c64c | 809 | static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); |
1da177e4 | 810 | |
0124dd78 JD |
811 | static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, |
812 | char *buf) | |
813 | { | |
814 | int bitnr = to_sensor_dev_attr(attr)->index; | |
815 | struct it87_data *data = it87_update_device(dev); | |
816 | return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); | |
817 | } | |
818 | static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8); | |
819 | static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9); | |
820 | static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10); | |
821 | static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 11); | |
822 | static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 12); | |
823 | static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 13); | |
824 | static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 14); | |
825 | static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 15); | |
826 | static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 0); | |
827 | static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 1); | |
828 | static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 2); | |
829 | static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 3); | |
830 | static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 6); | |
831 | static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 16); | |
832 | static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 17); | |
833 | static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 18); | |
834 | ||
1da177e4 | 835 | static ssize_t |
30f74292 | 836 | show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 | 837 | { |
90d6619a | 838 | struct it87_data *data = dev_get_drvdata(dev); |
a7be58a1 | 839 | return sprintf(buf, "%u\n", data->vrm); |
1da177e4 LT |
840 | } |
841 | static ssize_t | |
30f74292 | 842 | store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4 | 843 | { |
b74f3fdd | 844 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
845 | u32 val; |
846 | ||
847 | val = simple_strtoul(buf, NULL, 10); | |
848 | data->vrm = val; | |
849 | ||
850 | return count; | |
851 | } | |
852 | static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg); | |
1da177e4 LT |
853 | |
854 | static ssize_t | |
30f74292 | 855 | show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
856 | { |
857 | struct it87_data *data = it87_update_device(dev); | |
858 | return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm)); | |
859 | } | |
860 | static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL); | |
87808be4 | 861 | |
b74f3fdd | 862 | static ssize_t show_name(struct device *dev, struct device_attribute |
863 | *devattr, char *buf) | |
864 | { | |
865 | struct it87_data *data = dev_get_drvdata(dev); | |
866 | return sprintf(buf, "%s\n", data->name); | |
867 | } | |
868 | static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); | |
869 | ||
87808be4 JD |
870 | static struct attribute *it87_attributes[] = { |
871 | &sensor_dev_attr_in0_input.dev_attr.attr, | |
872 | &sensor_dev_attr_in1_input.dev_attr.attr, | |
873 | &sensor_dev_attr_in2_input.dev_attr.attr, | |
874 | &sensor_dev_attr_in3_input.dev_attr.attr, | |
875 | &sensor_dev_attr_in4_input.dev_attr.attr, | |
876 | &sensor_dev_attr_in5_input.dev_attr.attr, | |
877 | &sensor_dev_attr_in6_input.dev_attr.attr, | |
878 | &sensor_dev_attr_in7_input.dev_attr.attr, | |
879 | &sensor_dev_attr_in8_input.dev_attr.attr, | |
880 | &sensor_dev_attr_in0_min.dev_attr.attr, | |
881 | &sensor_dev_attr_in1_min.dev_attr.attr, | |
882 | &sensor_dev_attr_in2_min.dev_attr.attr, | |
883 | &sensor_dev_attr_in3_min.dev_attr.attr, | |
884 | &sensor_dev_attr_in4_min.dev_attr.attr, | |
885 | &sensor_dev_attr_in5_min.dev_attr.attr, | |
886 | &sensor_dev_attr_in6_min.dev_attr.attr, | |
887 | &sensor_dev_attr_in7_min.dev_attr.attr, | |
888 | &sensor_dev_attr_in0_max.dev_attr.attr, | |
889 | &sensor_dev_attr_in1_max.dev_attr.attr, | |
890 | &sensor_dev_attr_in2_max.dev_attr.attr, | |
891 | &sensor_dev_attr_in3_max.dev_attr.attr, | |
892 | &sensor_dev_attr_in4_max.dev_attr.attr, | |
893 | &sensor_dev_attr_in5_max.dev_attr.attr, | |
894 | &sensor_dev_attr_in6_max.dev_attr.attr, | |
895 | &sensor_dev_attr_in7_max.dev_attr.attr, | |
0124dd78 JD |
896 | &sensor_dev_attr_in0_alarm.dev_attr.attr, |
897 | &sensor_dev_attr_in1_alarm.dev_attr.attr, | |
898 | &sensor_dev_attr_in2_alarm.dev_attr.attr, | |
899 | &sensor_dev_attr_in3_alarm.dev_attr.attr, | |
900 | &sensor_dev_attr_in4_alarm.dev_attr.attr, | |
901 | &sensor_dev_attr_in5_alarm.dev_attr.attr, | |
902 | &sensor_dev_attr_in6_alarm.dev_attr.attr, | |
903 | &sensor_dev_attr_in7_alarm.dev_attr.attr, | |
87808be4 JD |
904 | |
905 | &sensor_dev_attr_temp1_input.dev_attr.attr, | |
906 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
907 | &sensor_dev_attr_temp3_input.dev_attr.attr, | |
908 | &sensor_dev_attr_temp1_max.dev_attr.attr, | |
909 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
910 | &sensor_dev_attr_temp3_max.dev_attr.attr, | |
911 | &sensor_dev_attr_temp1_min.dev_attr.attr, | |
912 | &sensor_dev_attr_temp2_min.dev_attr.attr, | |
913 | &sensor_dev_attr_temp3_min.dev_attr.attr, | |
914 | &sensor_dev_attr_temp1_type.dev_attr.attr, | |
915 | &sensor_dev_attr_temp2_type.dev_attr.attr, | |
916 | &sensor_dev_attr_temp3_type.dev_attr.attr, | |
0124dd78 JD |
917 | &sensor_dev_attr_temp1_alarm.dev_attr.attr, |
918 | &sensor_dev_attr_temp2_alarm.dev_attr.attr, | |
919 | &sensor_dev_attr_temp3_alarm.dev_attr.attr, | |
87808be4 JD |
920 | |
921 | &dev_attr_alarms.attr, | |
b74f3fdd | 922 | &dev_attr_name.attr, |
87808be4 JD |
923 | NULL |
924 | }; | |
925 | ||
926 | static const struct attribute_group it87_group = { | |
927 | .attrs = it87_attributes, | |
928 | }; | |
929 | ||
930 | static struct attribute *it87_attributes_opt[] = { | |
931 | &sensor_dev_attr_fan1_input16.dev_attr.attr, | |
932 | &sensor_dev_attr_fan1_min16.dev_attr.attr, | |
933 | &sensor_dev_attr_fan2_input16.dev_attr.attr, | |
934 | &sensor_dev_attr_fan2_min16.dev_attr.attr, | |
935 | &sensor_dev_attr_fan3_input16.dev_attr.attr, | |
936 | &sensor_dev_attr_fan3_min16.dev_attr.attr, | |
c7f1f716 JD |
937 | &sensor_dev_attr_fan4_input16.dev_attr.attr, |
938 | &sensor_dev_attr_fan4_min16.dev_attr.attr, | |
939 | &sensor_dev_attr_fan5_input16.dev_attr.attr, | |
940 | &sensor_dev_attr_fan5_min16.dev_attr.attr, | |
87808be4 JD |
941 | |
942 | &sensor_dev_attr_fan1_input.dev_attr.attr, | |
943 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
944 | &sensor_dev_attr_fan1_div.dev_attr.attr, | |
945 | &sensor_dev_attr_fan2_input.dev_attr.attr, | |
946 | &sensor_dev_attr_fan2_min.dev_attr.attr, | |
947 | &sensor_dev_attr_fan2_div.dev_attr.attr, | |
948 | &sensor_dev_attr_fan3_input.dev_attr.attr, | |
949 | &sensor_dev_attr_fan3_min.dev_attr.attr, | |
950 | &sensor_dev_attr_fan3_div.dev_attr.attr, | |
951 | ||
0124dd78 JD |
952 | &sensor_dev_attr_fan1_alarm.dev_attr.attr, |
953 | &sensor_dev_attr_fan2_alarm.dev_attr.attr, | |
954 | &sensor_dev_attr_fan3_alarm.dev_attr.attr, | |
955 | &sensor_dev_attr_fan4_alarm.dev_attr.attr, | |
956 | &sensor_dev_attr_fan5_alarm.dev_attr.attr, | |
957 | ||
87808be4 JD |
958 | &sensor_dev_attr_pwm1_enable.dev_attr.attr, |
959 | &sensor_dev_attr_pwm2_enable.dev_attr.attr, | |
960 | &sensor_dev_attr_pwm3_enable.dev_attr.attr, | |
961 | &sensor_dev_attr_pwm1.dev_attr.attr, | |
962 | &sensor_dev_attr_pwm2.dev_attr.attr, | |
963 | &sensor_dev_attr_pwm3.dev_attr.attr, | |
d5b0b5d6 JD |
964 | &dev_attr_pwm1_freq.attr, |
965 | &dev_attr_pwm2_freq.attr, | |
966 | &dev_attr_pwm3_freq.attr, | |
87808be4 JD |
967 | |
968 | &dev_attr_vrm.attr, | |
969 | &dev_attr_cpu0_vid.attr, | |
970 | NULL | |
971 | }; | |
972 | ||
973 | static const struct attribute_group it87_group_opt = { | |
974 | .attrs = it87_attributes_opt, | |
975 | }; | |
1da177e4 | 976 | |
2d8672c5 | 977 | /* SuperIO detection - will change isa_address if a chip is found */ |
b74f3fdd | 978 | static int __init it87_find(unsigned short *address, |
979 | struct it87_sio_data *sio_data) | |
1da177e4 LT |
980 | { |
981 | int err = -ENODEV; | |
b74f3fdd | 982 | u16 chip_type; |
98dd22c3 | 983 | const char *board_vendor, *board_name; |
1da177e4 LT |
984 | |
985 | superio_enter(); | |
67b671bc | 986 | chip_type = force_id ? force_id : superio_inw(DEVID); |
b74f3fdd | 987 | |
988 | switch (chip_type) { | |
989 | case IT8705F_DEVID: | |
990 | sio_data->type = it87; | |
991 | break; | |
992 | case IT8712F_DEVID: | |
993 | sio_data->type = it8712; | |
994 | break; | |
995 | case IT8716F_DEVID: | |
996 | case IT8726F_DEVID: | |
997 | sio_data->type = it8716; | |
998 | break; | |
999 | case IT8718F_DEVID: | |
1000 | sio_data->type = it8718; | |
1001 | break; | |
b4da93e4 JMS |
1002 | case IT8720F_DEVID: |
1003 | sio_data->type = it8720; | |
1004 | break; | |
b74f3fdd | 1005 | case 0xffff: /* No device at all */ |
1006 | goto exit; | |
1007 | default: | |
1008 | pr_debug(DRVNAME ": Unsupported chip (DEVID=0x%x)\n", | |
1009 | chip_type); | |
1010 | goto exit; | |
1011 | } | |
1da177e4 | 1012 | |
87673dd7 | 1013 | superio_select(PME); |
1da177e4 LT |
1014 | if (!(superio_inb(IT87_ACT_REG) & 0x01)) { |
1015 | pr_info("it87: Device not activated, skipping\n"); | |
1016 | goto exit; | |
1017 | } | |
1018 | ||
1019 | *address = superio_inw(IT87_BASE_REG) & ~(IT87_EXTENT - 1); | |
1020 | if (*address == 0) { | |
1021 | pr_info("it87: Base address not set, skipping\n"); | |
1022 | goto exit; | |
1023 | } | |
1024 | ||
1025 | err = 0; | |
0475169c | 1026 | sio_data->revision = superio_inb(DEVREV) & 0x0f; |
1da177e4 | 1027 | pr_info("it87: Found IT%04xF chip at 0x%x, revision %d\n", |
0475169c | 1028 | chip_type, *address, sio_data->revision); |
1da177e4 | 1029 | |
87673dd7 JD |
1030 | /* Read GPIO config and VID value from LDN 7 (GPIO) */ |
1031 | if (chip_type != IT8705F_DEVID) { | |
1032 | int reg; | |
1033 | ||
1034 | superio_select(GPIO); | |
b4da93e4 JMS |
1035 | if ((chip_type == it8718) || |
1036 | (chip_type == it8720)) | |
b74f3fdd | 1037 | sio_data->vid_value = superio_inb(IT87_SIO_VID_REG); |
87673dd7 JD |
1038 | |
1039 | reg = superio_inb(IT87_SIO_PINX2_REG); | |
1040 | if (reg & (1 << 0)) | |
1041 | pr_info("it87: in3 is VCC (+5V)\n"); | |
1042 | if (reg & (1 << 1)) | |
1043 | pr_info("it87: in7 is VCCH (+5V Stand-By)\n"); | |
1044 | } | |
1045 | ||
98dd22c3 JD |
1046 | /* Disable specific features based on DMI strings */ |
1047 | board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR); | |
1048 | board_name = dmi_get_system_info(DMI_BOARD_NAME); | |
1049 | if (board_vendor && board_name) { | |
1050 | if (strcmp(board_vendor, "nVIDIA") == 0 | |
1051 | && strcmp(board_name, "FN68PT") == 0) { | |
1052 | /* On the Shuttle SN68PT, FAN_CTL2 is apparently not | |
1053 | connected to a fan, but to something else. One user | |
1054 | has reported instant system power-off when changing | |
1055 | the PWM2 duty cycle, so we disable it. | |
1056 | I use the board name string as the trigger in case | |
1057 | the same board is ever used in other systems. */ | |
1058 | pr_info("it87: Disabling pwm2 due to " | |
1059 | "hardware constraints\n"); | |
1060 | sio_data->skip_pwm = (1 << 1); | |
1061 | } | |
1062 | } | |
1063 | ||
1da177e4 LT |
1064 | exit: |
1065 | superio_exit(); | |
1066 | return err; | |
1067 | } | |
1068 | ||
b74f3fdd | 1069 | static int __devinit it87_probe(struct platform_device *pdev) |
1da177e4 | 1070 | { |
1da177e4 | 1071 | struct it87_data *data; |
b74f3fdd | 1072 | struct resource *res; |
1073 | struct device *dev = &pdev->dev; | |
1074 | struct it87_sio_data *sio_data = dev->platform_data; | |
1da177e4 | 1075 | int err = 0; |
1da177e4 | 1076 | int enable_pwm_interface; |
b74f3fdd | 1077 | static const char *names[] = { |
1078 | "it87", | |
1079 | "it8712", | |
1080 | "it8716", | |
1081 | "it8718", | |
b4da93e4 | 1082 | "it8720", |
b74f3fdd | 1083 | }; |
1084 | ||
1085 | res = platform_get_resource(pdev, IORESOURCE_IO, 0); | |
87b4b663 | 1086 | if (!request_region(res->start, IT87_EC_EXTENT, DRVNAME)) { |
b74f3fdd | 1087 | dev_err(dev, "Failed to request region 0x%lx-0x%lx\n", |
1088 | (unsigned long)res->start, | |
87b4b663 | 1089 | (unsigned long)(res->start + IT87_EC_EXTENT - 1)); |
8e9afcbb JD |
1090 | err = -EBUSY; |
1091 | goto ERROR0; | |
1092 | } | |
1da177e4 | 1093 | |
ba9c2e8d | 1094 | if (!(data = kzalloc(sizeof(struct it87_data), GFP_KERNEL))) { |
1da177e4 LT |
1095 | err = -ENOMEM; |
1096 | goto ERROR1; | |
1097 | } | |
1da177e4 | 1098 | |
b74f3fdd | 1099 | data->addr = res->start; |
1100 | data->type = sio_data->type; | |
0475169c | 1101 | data->revision = sio_data->revision; |
b74f3fdd | 1102 | data->name = names[sio_data->type]; |
1da177e4 LT |
1103 | |
1104 | /* Now, we do the remaining detection. */ | |
b74f3fdd | 1105 | if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80) |
1106 | || it87_read_value(data, IT87_REG_CHIPID) != 0x90) { | |
8e9afcbb JD |
1107 | err = -ENODEV; |
1108 | goto ERROR2; | |
1da177e4 LT |
1109 | } |
1110 | ||
b74f3fdd | 1111 | platform_set_drvdata(pdev, data); |
1da177e4 | 1112 | |
9a61bf63 | 1113 | mutex_init(&data->update_lock); |
1da177e4 | 1114 | |
1da177e4 | 1115 | /* Check PWM configuration */ |
b74f3fdd | 1116 | enable_pwm_interface = it87_check_pwm(dev); |
1da177e4 LT |
1117 | |
1118 | /* Initialize the IT87 chip */ | |
b74f3fdd | 1119 | it87_init_device(pdev); |
1da177e4 LT |
1120 | |
1121 | /* Register sysfs hooks */ | |
b74f3fdd | 1122 | if ((err = sysfs_create_group(&dev->kobj, &it87_group))) |
1123 | goto ERROR2; | |
17d648bf | 1124 | |
9060f8bd | 1125 | /* Do not create fan files for disabled fans */ |
0475169c | 1126 | if (has_16bit_fans(data)) { |
87673dd7 | 1127 | /* 16-bit tachometers */ |
9060f8bd | 1128 | if (data->has_fan & (1 << 0)) { |
b74f3fdd | 1129 | if ((err = device_create_file(dev, |
87808be4 | 1130 | &sensor_dev_attr_fan1_input16.dev_attr)) |
b74f3fdd | 1131 | || (err = device_create_file(dev, |
0124dd78 JD |
1132 | &sensor_dev_attr_fan1_min16.dev_attr)) |
1133 | || (err = device_create_file(dev, | |
1134 | &sensor_dev_attr_fan1_alarm.dev_attr))) | |
87808be4 | 1135 | goto ERROR4; |
9060f8bd JD |
1136 | } |
1137 | if (data->has_fan & (1 << 1)) { | |
b74f3fdd | 1138 | if ((err = device_create_file(dev, |
87808be4 | 1139 | &sensor_dev_attr_fan2_input16.dev_attr)) |
b74f3fdd | 1140 | || (err = device_create_file(dev, |
0124dd78 JD |
1141 | &sensor_dev_attr_fan2_min16.dev_attr)) |
1142 | || (err = device_create_file(dev, | |
1143 | &sensor_dev_attr_fan2_alarm.dev_attr))) | |
87808be4 | 1144 | goto ERROR4; |
9060f8bd JD |
1145 | } |
1146 | if (data->has_fan & (1 << 2)) { | |
b74f3fdd | 1147 | if ((err = device_create_file(dev, |
87808be4 | 1148 | &sensor_dev_attr_fan3_input16.dev_attr)) |
b74f3fdd | 1149 | || (err = device_create_file(dev, |
0124dd78 JD |
1150 | &sensor_dev_attr_fan3_min16.dev_attr)) |
1151 | || (err = device_create_file(dev, | |
1152 | &sensor_dev_attr_fan3_alarm.dev_attr))) | |
87808be4 | 1153 | goto ERROR4; |
9060f8bd | 1154 | } |
c7f1f716 JD |
1155 | if (data->has_fan & (1 << 3)) { |
1156 | if ((err = device_create_file(dev, | |
1157 | &sensor_dev_attr_fan4_input16.dev_attr)) | |
1158 | || (err = device_create_file(dev, | |
0124dd78 JD |
1159 | &sensor_dev_attr_fan4_min16.dev_attr)) |
1160 | || (err = device_create_file(dev, | |
1161 | &sensor_dev_attr_fan4_alarm.dev_attr))) | |
c7f1f716 JD |
1162 | goto ERROR4; |
1163 | } | |
1164 | if (data->has_fan & (1 << 4)) { | |
1165 | if ((err = device_create_file(dev, | |
1166 | &sensor_dev_attr_fan5_input16.dev_attr)) | |
1167 | || (err = device_create_file(dev, | |
0124dd78 JD |
1168 | &sensor_dev_attr_fan5_min16.dev_attr)) |
1169 | || (err = device_create_file(dev, | |
1170 | &sensor_dev_attr_fan5_alarm.dev_attr))) | |
c7f1f716 JD |
1171 | goto ERROR4; |
1172 | } | |
17d648bf | 1173 | } else { |
87673dd7 | 1174 | /* 8-bit tachometers with clock divider */ |
9060f8bd | 1175 | if (data->has_fan & (1 << 0)) { |
b74f3fdd | 1176 | if ((err = device_create_file(dev, |
87808be4 | 1177 | &sensor_dev_attr_fan1_input.dev_attr)) |
b74f3fdd | 1178 | || (err = device_create_file(dev, |
87808be4 | 1179 | &sensor_dev_attr_fan1_min.dev_attr)) |
b74f3fdd | 1180 | || (err = device_create_file(dev, |
0124dd78 JD |
1181 | &sensor_dev_attr_fan1_div.dev_attr)) |
1182 | || (err = device_create_file(dev, | |
1183 | &sensor_dev_attr_fan1_alarm.dev_attr))) | |
87808be4 | 1184 | goto ERROR4; |
9060f8bd JD |
1185 | } |
1186 | if (data->has_fan & (1 << 1)) { | |
b74f3fdd | 1187 | if ((err = device_create_file(dev, |
87808be4 | 1188 | &sensor_dev_attr_fan2_input.dev_attr)) |
b74f3fdd | 1189 | || (err = device_create_file(dev, |
87808be4 | 1190 | &sensor_dev_attr_fan2_min.dev_attr)) |
b74f3fdd | 1191 | || (err = device_create_file(dev, |
0124dd78 JD |
1192 | &sensor_dev_attr_fan2_div.dev_attr)) |
1193 | || (err = device_create_file(dev, | |
1194 | &sensor_dev_attr_fan2_alarm.dev_attr))) | |
87808be4 | 1195 | goto ERROR4; |
9060f8bd JD |
1196 | } |
1197 | if (data->has_fan & (1 << 2)) { | |
b74f3fdd | 1198 | if ((err = device_create_file(dev, |
87808be4 | 1199 | &sensor_dev_attr_fan3_input.dev_attr)) |
b74f3fdd | 1200 | || (err = device_create_file(dev, |
87808be4 | 1201 | &sensor_dev_attr_fan3_min.dev_attr)) |
b74f3fdd | 1202 | || (err = device_create_file(dev, |
0124dd78 JD |
1203 | &sensor_dev_attr_fan3_div.dev_attr)) |
1204 | || (err = device_create_file(dev, | |
1205 | &sensor_dev_attr_fan3_alarm.dev_attr))) | |
87808be4 | 1206 | goto ERROR4; |
9060f8bd | 1207 | } |
17d648bf JD |
1208 | } |
1209 | ||
1da177e4 | 1210 | if (enable_pwm_interface) { |
98dd22c3 JD |
1211 | if (!(sio_data->skip_pwm & (1 << 0))) { |
1212 | if ((err = device_create_file(dev, | |
1213 | &sensor_dev_attr_pwm1_enable.dev_attr)) | |
1214 | || (err = device_create_file(dev, | |
1215 | &sensor_dev_attr_pwm1.dev_attr)) | |
1216 | || (err = device_create_file(dev, | |
1217 | &dev_attr_pwm1_freq))) | |
1218 | goto ERROR4; | |
1219 | } | |
1220 | if (!(sio_data->skip_pwm & (1 << 1))) { | |
1221 | if ((err = device_create_file(dev, | |
1222 | &sensor_dev_attr_pwm2_enable.dev_attr)) | |
1223 | || (err = device_create_file(dev, | |
1224 | &sensor_dev_attr_pwm2.dev_attr)) | |
1225 | || (err = device_create_file(dev, | |
1226 | &dev_attr_pwm2_freq))) | |
1227 | goto ERROR4; | |
1228 | } | |
1229 | if (!(sio_data->skip_pwm & (1 << 2))) { | |
1230 | if ((err = device_create_file(dev, | |
1231 | &sensor_dev_attr_pwm3_enable.dev_attr)) | |
1232 | || (err = device_create_file(dev, | |
1233 | &sensor_dev_attr_pwm3.dev_attr)) | |
1234 | || (err = device_create_file(dev, | |
1235 | &dev_attr_pwm3_freq))) | |
1236 | goto ERROR4; | |
1237 | } | |
1da177e4 LT |
1238 | } |
1239 | ||
87673dd7 | 1240 | if (data->type == it8712 || data->type == it8716 |
b4da93e4 | 1241 | || data->type == it8718 || data->type == it8720) { |
303760b4 | 1242 | data->vrm = vid_which_vrm(); |
87673dd7 | 1243 | /* VID reading from Super-I/O config space if available */ |
b74f3fdd | 1244 | data->vid = sio_data->vid_value; |
1245 | if ((err = device_create_file(dev, | |
87808be4 | 1246 | &dev_attr_vrm)) |
b74f3fdd | 1247 | || (err = device_create_file(dev, |
87808be4 JD |
1248 | &dev_attr_cpu0_vid))) |
1249 | goto ERROR4; | |
1250 | } | |
1251 | ||
1beeffe4 TJ |
1252 | data->hwmon_dev = hwmon_device_register(dev); |
1253 | if (IS_ERR(data->hwmon_dev)) { | |
1254 | err = PTR_ERR(data->hwmon_dev); | |
87808be4 | 1255 | goto ERROR4; |
1da177e4 LT |
1256 | } |
1257 | ||
1258 | return 0; | |
1259 | ||
87808be4 | 1260 | ERROR4: |
b74f3fdd | 1261 | sysfs_remove_group(&dev->kobj, &it87_group); |
1262 | sysfs_remove_group(&dev->kobj, &it87_group_opt); | |
1da177e4 | 1263 | ERROR2: |
b74f3fdd | 1264 | platform_set_drvdata(pdev, NULL); |
1da177e4 LT |
1265 | kfree(data); |
1266 | ERROR1: | |
87b4b663 | 1267 | release_region(res->start, IT87_EC_EXTENT); |
1da177e4 LT |
1268 | ERROR0: |
1269 | return err; | |
1270 | } | |
1271 | ||
b74f3fdd | 1272 | static int __devexit it87_remove(struct platform_device *pdev) |
1da177e4 | 1273 | { |
b74f3fdd | 1274 | struct it87_data *data = platform_get_drvdata(pdev); |
1da177e4 | 1275 | |
1beeffe4 | 1276 | hwmon_device_unregister(data->hwmon_dev); |
b74f3fdd | 1277 | sysfs_remove_group(&pdev->dev.kobj, &it87_group); |
1278 | sysfs_remove_group(&pdev->dev.kobj, &it87_group_opt); | |
943b0830 | 1279 | |
87b4b663 | 1280 | release_region(data->addr, IT87_EC_EXTENT); |
b74f3fdd | 1281 | platform_set_drvdata(pdev, NULL); |
943b0830 | 1282 | kfree(data); |
1da177e4 LT |
1283 | |
1284 | return 0; | |
1285 | } | |
1286 | ||
7f999aa7 | 1287 | /* Must be called with data->update_lock held, except during initialization. |
1da177e4 LT |
1288 | We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks, |
1289 | would slow down the IT87 access and should not be necessary. */ | |
b74f3fdd | 1290 | static int it87_read_value(struct it87_data *data, u8 reg) |
1da177e4 | 1291 | { |
b74f3fdd | 1292 | outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET); |
1293 | return inb_p(data->addr + IT87_DATA_REG_OFFSET); | |
1da177e4 LT |
1294 | } |
1295 | ||
7f999aa7 | 1296 | /* Must be called with data->update_lock held, except during initialization. |
1da177e4 LT |
1297 | We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks, |
1298 | would slow down the IT87 access and should not be necessary. */ | |
b74f3fdd | 1299 | static void it87_write_value(struct it87_data *data, u8 reg, u8 value) |
1da177e4 | 1300 | { |
b74f3fdd | 1301 | outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET); |
1302 | outb_p(value, data->addr + IT87_DATA_REG_OFFSET); | |
1da177e4 LT |
1303 | } |
1304 | ||
1305 | /* Return 1 if and only if the PWM interface is safe to use */ | |
b74f3fdd | 1306 | static int __devinit it87_check_pwm(struct device *dev) |
1da177e4 | 1307 | { |
b74f3fdd | 1308 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
1309 | /* Some BIOSes fail to correctly configure the IT87 fans. All fans off |
1310 | * and polarity set to active low is sign that this is the case so we | |
1311 | * disable pwm control to protect the user. */ | |
b74f3fdd | 1312 | int tmp = it87_read_value(data, IT87_REG_FAN_CTL); |
1da177e4 LT |
1313 | if ((tmp & 0x87) == 0) { |
1314 | if (fix_pwm_polarity) { | |
1315 | /* The user asks us to attempt a chip reconfiguration. | |
1316 | * This means switching to active high polarity and | |
1317 | * inverting all fan speed values. */ | |
1318 | int i; | |
1319 | u8 pwm[3]; | |
1320 | ||
1321 | for (i = 0; i < 3; i++) | |
b74f3fdd | 1322 | pwm[i] = it87_read_value(data, |
1da177e4 LT |
1323 | IT87_REG_PWM(i)); |
1324 | ||
1325 | /* If any fan is in automatic pwm mode, the polarity | |
1326 | * might be correct, as suspicious as it seems, so we | |
1327 | * better don't change anything (but still disable the | |
1328 | * PWM interface). */ | |
1329 | if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) { | |
b74f3fdd | 1330 | dev_info(dev, "Reconfiguring PWM to " |
1da177e4 | 1331 | "active high polarity\n"); |
b74f3fdd | 1332 | it87_write_value(data, IT87_REG_FAN_CTL, |
1da177e4 LT |
1333 | tmp | 0x87); |
1334 | for (i = 0; i < 3; i++) | |
b74f3fdd | 1335 | it87_write_value(data, |
1da177e4 LT |
1336 | IT87_REG_PWM(i), |
1337 | 0x7f & ~pwm[i]); | |
1338 | return 1; | |
1339 | } | |
1340 | ||
b74f3fdd | 1341 | dev_info(dev, "PWM configuration is " |
1da177e4 LT |
1342 | "too broken to be fixed\n"); |
1343 | } | |
1344 | ||
b74f3fdd | 1345 | dev_info(dev, "Detected broken BIOS " |
1da177e4 LT |
1346 | "defaults, disabling PWM interface\n"); |
1347 | return 0; | |
1348 | } else if (fix_pwm_polarity) { | |
b74f3fdd | 1349 | dev_info(dev, "PWM configuration looks " |
1da177e4 LT |
1350 | "sane, won't touch\n"); |
1351 | } | |
1352 | ||
1353 | return 1; | |
1354 | } | |
1355 | ||
1356 | /* Called when we have found a new IT87. */ | |
b74f3fdd | 1357 | static void __devinit it87_init_device(struct platform_device *pdev) |
1da177e4 | 1358 | { |
b74f3fdd | 1359 | struct it87_data *data = platform_get_drvdata(pdev); |
1da177e4 LT |
1360 | int tmp, i; |
1361 | ||
1362 | /* initialize to sane defaults: | |
1363 | * - if the chip is in manual pwm mode, this will be overwritten with | |
1364 | * the actual settings on the chip (so in this case, initialization | |
1365 | * is not needed) | |
1366 | * - if in automatic or on/off mode, we could switch to manual mode, | |
1367 | * read the registers and set manual_pwm_ctl accordingly, but currently | |
1368 | * this is not implemented, so we initialize to something sane */ | |
1369 | for (i = 0; i < 3; i++) { | |
1370 | data->manual_pwm_ctl[i] = 0xff; | |
1371 | } | |
1372 | ||
c5df9b7a JD |
1373 | /* Some chips seem to have default value 0xff for all limit |
1374 | * registers. For low voltage limits it makes no sense and triggers | |
1375 | * alarms, so change to 0 instead. For high temperature limits, it | |
1376 | * means -1 degree C, which surprisingly doesn't trigger an alarm, | |
1377 | * but is still confusing, so change to 127 degrees C. */ | |
1378 | for (i = 0; i < 8; i++) { | |
b74f3fdd | 1379 | tmp = it87_read_value(data, IT87_REG_VIN_MIN(i)); |
c5df9b7a | 1380 | if (tmp == 0xff) |
b74f3fdd | 1381 | it87_write_value(data, IT87_REG_VIN_MIN(i), 0); |
c5df9b7a JD |
1382 | } |
1383 | for (i = 0; i < 3; i++) { | |
b74f3fdd | 1384 | tmp = it87_read_value(data, IT87_REG_TEMP_HIGH(i)); |
c5df9b7a | 1385 | if (tmp == 0xff) |
b74f3fdd | 1386 | it87_write_value(data, IT87_REG_TEMP_HIGH(i), 127); |
c5df9b7a JD |
1387 | } |
1388 | ||
77fa49d9 | 1389 | /* Check if temperature channels are reset manually or by some reason */ |
b74f3fdd | 1390 | tmp = it87_read_value(data, IT87_REG_TEMP_ENABLE); |
1da177e4 LT |
1391 | if ((tmp & 0x3f) == 0) { |
1392 | /* Temp1,Temp3=thermistor; Temp2=thermal diode */ | |
1393 | tmp = (tmp & 0xc0) | 0x2a; | |
b74f3fdd | 1394 | it87_write_value(data, IT87_REG_TEMP_ENABLE, tmp); |
1da177e4 LT |
1395 | } |
1396 | data->sensor = tmp; | |
1397 | ||
1398 | /* Check if voltage monitors are reset manually or by some reason */ | |
b74f3fdd | 1399 | tmp = it87_read_value(data, IT87_REG_VIN_ENABLE); |
1da177e4 LT |
1400 | if ((tmp & 0xff) == 0) { |
1401 | /* Enable all voltage monitors */ | |
b74f3fdd | 1402 | it87_write_value(data, IT87_REG_VIN_ENABLE, 0xff); |
1da177e4 LT |
1403 | } |
1404 | ||
1405 | /* Check if tachometers are reset manually or by some reason */ | |
b74f3fdd | 1406 | data->fan_main_ctrl = it87_read_value(data, IT87_REG_FAN_MAIN_CTRL); |
1da177e4 LT |
1407 | if ((data->fan_main_ctrl & 0x70) == 0) { |
1408 | /* Enable all fan tachometers */ | |
1409 | data->fan_main_ctrl |= 0x70; | |
b74f3fdd | 1410 | it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl); |
1da177e4 | 1411 | } |
9060f8bd | 1412 | data->has_fan = (data->fan_main_ctrl >> 4) & 0x07; |
1da177e4 | 1413 | |
17d648bf | 1414 | /* Set tachometers to 16-bit mode if needed */ |
0475169c | 1415 | if (has_16bit_fans(data)) { |
b74f3fdd | 1416 | tmp = it87_read_value(data, IT87_REG_FAN_16BIT); |
9060f8bd | 1417 | if (~tmp & 0x07 & data->has_fan) { |
b74f3fdd | 1418 | dev_dbg(&pdev->dev, |
17d648bf | 1419 | "Setting fan1-3 to 16-bit mode\n"); |
b74f3fdd | 1420 | it87_write_value(data, IT87_REG_FAN_16BIT, |
17d648bf JD |
1421 | tmp | 0x07); |
1422 | } | |
816d8c6a AP |
1423 | /* IT8705F only supports three fans. */ |
1424 | if (data->type != it87) { | |
1425 | if (tmp & (1 << 4)) | |
1426 | data->has_fan |= (1 << 3); /* fan4 enabled */ | |
1427 | if (tmp & (1 << 5)) | |
1428 | data->has_fan |= (1 << 4); /* fan5 enabled */ | |
1429 | } | |
17d648bf JD |
1430 | } |
1431 | ||
1da177e4 LT |
1432 | /* Set current fan mode registers and the default settings for the |
1433 | * other mode registers */ | |
1434 | for (i = 0; i < 3; i++) { | |
1435 | if (data->fan_main_ctrl & (1 << i)) { | |
1436 | /* pwm mode */ | |
b74f3fdd | 1437 | tmp = it87_read_value(data, IT87_REG_PWM(i)); |
1da177e4 LT |
1438 | if (tmp & 0x80) { |
1439 | /* automatic pwm - not yet implemented, but | |
1440 | * leave the settings made by the BIOS alone | |
1441 | * until a change is requested via the sysfs | |
1442 | * interface */ | |
1443 | } else { | |
1444 | /* manual pwm */ | |
1445 | data->manual_pwm_ctl[i] = PWM_FROM_REG(tmp); | |
1446 | } | |
1447 | } | |
1448 | } | |
1449 | ||
1450 | /* Start monitoring */ | |
b74f3fdd | 1451 | it87_write_value(data, IT87_REG_CONFIG, |
1452 | (it87_read_value(data, IT87_REG_CONFIG) & 0x36) | |
1da177e4 LT |
1453 | | (update_vbat ? 0x41 : 0x01)); |
1454 | } | |
1455 | ||
1456 | static struct it87_data *it87_update_device(struct device *dev) | |
1457 | { | |
b74f3fdd | 1458 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
1459 | int i; |
1460 | ||
9a61bf63 | 1461 | mutex_lock(&data->update_lock); |
1da177e4 LT |
1462 | |
1463 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) | |
1464 | || !data->valid) { | |
1465 | ||
1466 | if (update_vbat) { | |
1467 | /* Cleared after each update, so reenable. Value | |
1468 | returned by this read will be previous value */ | |
b74f3fdd | 1469 | it87_write_value(data, IT87_REG_CONFIG, |
1470 | it87_read_value(data, IT87_REG_CONFIG) | 0x40); | |
1da177e4 LT |
1471 | } |
1472 | for (i = 0; i <= 7; i++) { | |
1473 | data->in[i] = | |
b74f3fdd | 1474 | it87_read_value(data, IT87_REG_VIN(i)); |
1da177e4 | 1475 | data->in_min[i] = |
b74f3fdd | 1476 | it87_read_value(data, IT87_REG_VIN_MIN(i)); |
1da177e4 | 1477 | data->in_max[i] = |
b74f3fdd | 1478 | it87_read_value(data, IT87_REG_VIN_MAX(i)); |
1da177e4 | 1479 | } |
3543a53f | 1480 | /* in8 (battery) has no limit registers */ |
1da177e4 | 1481 | data->in[8] = |
b74f3fdd | 1482 | it87_read_value(data, IT87_REG_VIN(8)); |
1da177e4 | 1483 | |
c7f1f716 | 1484 | for (i = 0; i < 5; i++) { |
9060f8bd JD |
1485 | /* Skip disabled fans */ |
1486 | if (!(data->has_fan & (1 << i))) | |
1487 | continue; | |
1488 | ||
1da177e4 | 1489 | data->fan_min[i] = |
c7f1f716 | 1490 | it87_read_value(data, IT87_REG_FAN_MIN[i]); |
b74f3fdd | 1491 | data->fan[i] = it87_read_value(data, |
c7f1f716 | 1492 | IT87_REG_FAN[i]); |
17d648bf | 1493 | /* Add high byte if in 16-bit mode */ |
0475169c | 1494 | if (has_16bit_fans(data)) { |
b74f3fdd | 1495 | data->fan[i] |= it87_read_value(data, |
c7f1f716 | 1496 | IT87_REG_FANX[i]) << 8; |
b74f3fdd | 1497 | data->fan_min[i] |= it87_read_value(data, |
c7f1f716 | 1498 | IT87_REG_FANX_MIN[i]) << 8; |
17d648bf | 1499 | } |
1da177e4 LT |
1500 | } |
1501 | for (i = 0; i < 3; i++) { | |
1502 | data->temp[i] = | |
b74f3fdd | 1503 | it87_read_value(data, IT87_REG_TEMP(i)); |
1da177e4 | 1504 | data->temp_high[i] = |
b74f3fdd | 1505 | it87_read_value(data, IT87_REG_TEMP_HIGH(i)); |
1da177e4 | 1506 | data->temp_low[i] = |
b74f3fdd | 1507 | it87_read_value(data, IT87_REG_TEMP_LOW(i)); |
1da177e4 LT |
1508 | } |
1509 | ||
17d648bf | 1510 | /* Newer chips don't have clock dividers */ |
0475169c | 1511 | if ((data->has_fan & 0x07) && !has_16bit_fans(data)) { |
b74f3fdd | 1512 | i = it87_read_value(data, IT87_REG_FAN_DIV); |
17d648bf JD |
1513 | data->fan_div[0] = i & 0x07; |
1514 | data->fan_div[1] = (i >> 3) & 0x07; | |
1515 | data->fan_div[2] = (i & 0x40) ? 3 : 1; | |
1516 | } | |
1da177e4 LT |
1517 | |
1518 | data->alarms = | |
b74f3fdd | 1519 | it87_read_value(data, IT87_REG_ALARM1) | |
1520 | (it87_read_value(data, IT87_REG_ALARM2) << 8) | | |
1521 | (it87_read_value(data, IT87_REG_ALARM3) << 16); | |
1522 | data->fan_main_ctrl = it87_read_value(data, | |
1523 | IT87_REG_FAN_MAIN_CTRL); | |
1524 | data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL); | |
1525 | ||
1526 | data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE); | |
0475169c | 1527 | /* The 8705 does not have VID capability. |
b4da93e4 JMS |
1528 | The 8718 and the 8720 don't use IT87_REG_VID for the |
1529 | same purpose. */ | |
17d648bf | 1530 | if (data->type == it8712 || data->type == it8716) { |
b74f3fdd | 1531 | data->vid = it87_read_value(data, IT87_REG_VID); |
17d648bf JD |
1532 | /* The older IT8712F revisions had only 5 VID pins, |
1533 | but we assume it is always safe to read 6 bits. */ | |
1534 | data->vid &= 0x3f; | |
1da177e4 LT |
1535 | } |
1536 | data->last_updated = jiffies; | |
1537 | data->valid = 1; | |
1538 | } | |
1539 | ||
9a61bf63 | 1540 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
1541 | |
1542 | return data; | |
1543 | } | |
1544 | ||
b74f3fdd | 1545 | static int __init it87_device_add(unsigned short address, |
1546 | const struct it87_sio_data *sio_data) | |
1547 | { | |
1548 | struct resource res = { | |
87b4b663 BH |
1549 | .start = address + IT87_EC_OFFSET, |
1550 | .end = address + IT87_EC_OFFSET + IT87_EC_EXTENT - 1, | |
b74f3fdd | 1551 | .name = DRVNAME, |
1552 | .flags = IORESOURCE_IO, | |
1553 | }; | |
1554 | int err; | |
1555 | ||
b9acb64a JD |
1556 | err = acpi_check_resource_conflict(&res); |
1557 | if (err) | |
1558 | goto exit; | |
1559 | ||
b74f3fdd | 1560 | pdev = platform_device_alloc(DRVNAME, address); |
1561 | if (!pdev) { | |
1562 | err = -ENOMEM; | |
1563 | printk(KERN_ERR DRVNAME ": Device allocation failed\n"); | |
1564 | goto exit; | |
1565 | } | |
1566 | ||
1567 | err = platform_device_add_resources(pdev, &res, 1); | |
1568 | if (err) { | |
1569 | printk(KERN_ERR DRVNAME ": Device resource addition failed " | |
1570 | "(%d)\n", err); | |
1571 | goto exit_device_put; | |
1572 | } | |
1573 | ||
1574 | err = platform_device_add_data(pdev, sio_data, | |
1575 | sizeof(struct it87_sio_data)); | |
1576 | if (err) { | |
1577 | printk(KERN_ERR DRVNAME ": Platform data allocation failed\n"); | |
1578 | goto exit_device_put; | |
1579 | } | |
1580 | ||
1581 | err = platform_device_add(pdev); | |
1582 | if (err) { | |
1583 | printk(KERN_ERR DRVNAME ": Device addition failed (%d)\n", | |
1584 | err); | |
1585 | goto exit_device_put; | |
1586 | } | |
1587 | ||
1588 | return 0; | |
1589 | ||
1590 | exit_device_put: | |
1591 | platform_device_put(pdev); | |
1592 | exit: | |
1593 | return err; | |
1594 | } | |
1595 | ||
1da177e4 LT |
1596 | static int __init sm_it87_init(void) |
1597 | { | |
b74f3fdd | 1598 | int err; |
1599 | unsigned short isa_address=0; | |
1600 | struct it87_sio_data sio_data; | |
1601 | ||
98dd22c3 | 1602 | memset(&sio_data, 0, sizeof(struct it87_sio_data)); |
b74f3fdd | 1603 | err = it87_find(&isa_address, &sio_data); |
1604 | if (err) | |
1605 | return err; | |
1606 | err = platform_driver_register(&it87_driver); | |
1607 | if (err) | |
1608 | return err; | |
fde09509 | 1609 | |
b74f3fdd | 1610 | err = it87_device_add(isa_address, &sio_data); |
1611 | if (err){ | |
1612 | platform_driver_unregister(&it87_driver); | |
1613 | return err; | |
1614 | } | |
1615 | ||
1616 | return 0; | |
1da177e4 LT |
1617 | } |
1618 | ||
1619 | static void __exit sm_it87_exit(void) | |
1620 | { | |
b74f3fdd | 1621 | platform_device_unregister(pdev); |
1622 | platform_driver_unregister(&it87_driver); | |
1da177e4 LT |
1623 | } |
1624 | ||
1625 | ||
f1d8e332 | 1626 | MODULE_AUTHOR("Chris Gauthron, " |
b19367c6 | 1627 | "Jean Delvare <khali@linux-fr.org>"); |
b4da93e4 | 1628 | MODULE_DESCRIPTION("IT8705F/8712F/8716F/8718F/8720F/8726F, SiS950 driver"); |
1da177e4 LT |
1629 | module_param(update_vbat, bool, 0); |
1630 | MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value"); | |
1631 | module_param(fix_pwm_polarity, bool, 0); | |
1632 | MODULE_PARM_DESC(fix_pwm_polarity, "Force PWM polarity to active high (DANGEROUS)"); | |
1633 | MODULE_LICENSE("GPL"); | |
1634 | ||
1635 | module_init(sm_it87_init); | |
1636 | module_exit(sm_it87_exit); |