Commit | Line | Data |
---|---|---|
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 |
08a8f6e9 | 17 | IT8726F Super I/O chip w/LPC interface |
1da177e4 LT |
18 | Sis950 A clone of the IT8705F |
19 | ||
f1d8e332 | 20 | Copyright (C) 2001 Chris Gauthron |
0124dd78 | 21 | Copyright (C) 2005-2007 Jean Delvare <khali@linux-fr.org> |
1da177e4 LT |
22 | |
23 | This program is free software; you can redistribute it and/or modify | |
24 | it under the terms of the GNU General Public License as published by | |
25 | the Free Software Foundation; either version 2 of the License, or | |
26 | (at your option) any later version. | |
27 | ||
28 | This program is distributed in the hope that it will be useful, | |
29 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
30 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
31 | GNU General Public License for more details. | |
32 | ||
33 | You should have received a copy of the GNU General Public License | |
34 | along with this program; if not, write to the Free Software | |
35 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
36 | */ | |
37 | ||
1da177e4 LT |
38 | #include <linux/module.h> |
39 | #include <linux/init.h> | |
40 | #include <linux/slab.h> | |
41 | #include <linux/jiffies.h> | |
b74f3fdd | 42 | #include <linux/platform_device.h> |
943b0830 | 43 | #include <linux/hwmon.h> |
303760b4 JD |
44 | #include <linux/hwmon-sysfs.h> |
45 | #include <linux/hwmon-vid.h> | |
943b0830 | 46 | #include <linux/err.h> |
9a61bf63 | 47 | #include <linux/mutex.h> |
87808be4 | 48 | #include <linux/sysfs.h> |
98dd22c3 JD |
49 | #include <linux/string.h> |
50 | #include <linux/dmi.h> | |
1da177e4 LT |
51 | #include <asm/io.h> |
52 | ||
b74f3fdd | 53 | #define DRVNAME "it87" |
1da177e4 | 54 | |
8e9afcbb | 55 | enum chips { it87, it8712, it8716, it8718 }; |
1da177e4 | 56 | |
67b671bc JD |
57 | static unsigned short force_id; |
58 | module_param(force_id, ushort, 0); | |
59 | MODULE_PARM_DESC(force_id, "Override the detected device ID"); | |
60 | ||
b74f3fdd | 61 | static struct platform_device *pdev; |
62 | ||
1da177e4 LT |
63 | #define REG 0x2e /* The register to read/write */ |
64 | #define DEV 0x07 /* Register: Logical device select */ | |
65 | #define VAL 0x2f /* The value to read/write */ | |
66 | #define PME 0x04 /* The device with the fan registers in it */ | |
87673dd7 | 67 | #define GPIO 0x07 /* The device with the IT8718F VID value in it */ |
1da177e4 LT |
68 | #define DEVID 0x20 /* Register: Device ID */ |
69 | #define DEVREV 0x22 /* Register: Device Revision */ | |
70 | ||
71 | static inline int | |
72 | superio_inb(int reg) | |
73 | { | |
74 | outb(reg, REG); | |
75 | return inb(VAL); | |
76 | } | |
77 | ||
78 | static int superio_inw(int reg) | |
79 | { | |
80 | int val; | |
81 | outb(reg++, REG); | |
82 | val = inb(VAL) << 8; | |
83 | outb(reg, REG); | |
84 | val |= inb(VAL); | |
85 | return val; | |
86 | } | |
87 | ||
88 | static inline void | |
87673dd7 | 89 | superio_select(int ldn) |
1da177e4 LT |
90 | { |
91 | outb(DEV, REG); | |
87673dd7 | 92 | outb(ldn, VAL); |
1da177e4 LT |
93 | } |
94 | ||
95 | static inline void | |
96 | superio_enter(void) | |
97 | { | |
98 | outb(0x87, REG); | |
99 | outb(0x01, REG); | |
100 | outb(0x55, REG); | |
101 | outb(0x55, REG); | |
102 | } | |
103 | ||
104 | static inline void | |
105 | superio_exit(void) | |
106 | { | |
107 | outb(0x02, REG); | |
108 | outb(0x02, VAL); | |
109 | } | |
110 | ||
87673dd7 | 111 | /* Logical device 4 registers */ |
1da177e4 LT |
112 | #define IT8712F_DEVID 0x8712 |
113 | #define IT8705F_DEVID 0x8705 | |
17d648bf | 114 | #define IT8716F_DEVID 0x8716 |
87673dd7 | 115 | #define IT8718F_DEVID 0x8718 |
08a8f6e9 | 116 | #define IT8726F_DEVID 0x8726 |
1da177e4 LT |
117 | #define IT87_ACT_REG 0x30 |
118 | #define IT87_BASE_REG 0x60 | |
119 | ||
87673dd7 JD |
120 | /* Logical device 7 registers (IT8712F and later) */ |
121 | #define IT87_SIO_PINX2_REG 0x2c /* Pin selection */ | |
122 | #define IT87_SIO_VID_REG 0xfc /* VID value */ | |
123 | ||
1da177e4 LT |
124 | /* Update battery voltage after every reading if true */ |
125 | static int update_vbat; | |
126 | ||
127 | /* Not all BIOSes properly configure the PWM registers */ | |
128 | static int fix_pwm_polarity; | |
129 | ||
1da177e4 LT |
130 | /* Many IT87 constants specified below */ |
131 | ||
132 | /* Length of ISA address segment */ | |
133 | #define IT87_EXTENT 8 | |
134 | ||
87b4b663 BH |
135 | /* Length of ISA address segment for Environmental Controller */ |
136 | #define IT87_EC_EXTENT 2 | |
137 | ||
138 | /* Offset of EC registers from ISA base address */ | |
139 | #define IT87_EC_OFFSET 5 | |
140 | ||
141 | /* Where are the ISA address/data registers relative to the EC base address */ | |
142 | #define IT87_ADDR_REG_OFFSET 0 | |
143 | #define IT87_DATA_REG_OFFSET 1 | |
1da177e4 LT |
144 | |
145 | /*----- The IT87 registers -----*/ | |
146 | ||
147 | #define IT87_REG_CONFIG 0x00 | |
148 | ||
149 | #define IT87_REG_ALARM1 0x01 | |
150 | #define IT87_REG_ALARM2 0x02 | |
151 | #define IT87_REG_ALARM3 0x03 | |
152 | ||
87673dd7 JD |
153 | /* The IT8718F has the VID value in a different register, in Super-I/O |
154 | configuration space. */ | |
1da177e4 | 155 | #define IT87_REG_VID 0x0a |
0475169c AP |
156 | /* The IT8705F and IT8712F earlier than revision 0x08 use register 0x0b |
157 | for fan divisors. Later IT8712F revisions must use 16-bit tachometer | |
158 | mode. */ | |
1da177e4 | 159 | #define IT87_REG_FAN_DIV 0x0b |
17d648bf | 160 | #define IT87_REG_FAN_16BIT 0x0c |
1da177e4 LT |
161 | |
162 | /* Monitors: 9 voltage (0 to 7, battery), 3 temp (1 to 3), 3 fan (1 to 3) */ | |
163 | ||
c7f1f716 JD |
164 | static const u8 IT87_REG_FAN[] = { 0x0d, 0x0e, 0x0f, 0x80, 0x82 }; |
165 | static const u8 IT87_REG_FAN_MIN[] = { 0x10, 0x11, 0x12, 0x84, 0x86 }; | |
166 | static const u8 IT87_REG_FANX[] = { 0x18, 0x19, 0x1a, 0x81, 0x83 }; | |
167 | static const u8 IT87_REG_FANX_MIN[] = { 0x1b, 0x1c, 0x1d, 0x85, 0x87 }; | |
1da177e4 LT |
168 | #define IT87_REG_FAN_MAIN_CTRL 0x13 |
169 | #define IT87_REG_FAN_CTL 0x14 | |
170 | #define IT87_REG_PWM(nr) (0x15 + (nr)) | |
171 | ||
172 | #define IT87_REG_VIN(nr) (0x20 + (nr)) | |
173 | #define IT87_REG_TEMP(nr) (0x29 + (nr)) | |
174 | ||
175 | #define IT87_REG_VIN_MAX(nr) (0x30 + (nr) * 2) | |
176 | #define IT87_REG_VIN_MIN(nr) (0x31 + (nr) * 2) | |
177 | #define IT87_REG_TEMP_HIGH(nr) (0x40 + (nr) * 2) | |
178 | #define IT87_REG_TEMP_LOW(nr) (0x41 + (nr) * 2) | |
179 | ||
1da177e4 LT |
180 | #define IT87_REG_VIN_ENABLE 0x50 |
181 | #define IT87_REG_TEMP_ENABLE 0x51 | |
182 | ||
183 | #define IT87_REG_CHIPID 0x58 | |
184 | ||
185 | #define IN_TO_REG(val) (SENSORS_LIMIT((((val) + 8)/16),0,255)) | |
186 | #define IN_FROM_REG(val) ((val) * 16) | |
187 | ||
188 | static inline u8 FAN_TO_REG(long rpm, int div) | |
189 | { | |
190 | if (rpm == 0) | |
191 | return 255; | |
192 | rpm = SENSORS_LIMIT(rpm, 1, 1000000); | |
193 | return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, | |
194 | 254); | |
195 | } | |
196 | ||
17d648bf JD |
197 | static inline u16 FAN16_TO_REG(long rpm) |
198 | { | |
199 | if (rpm == 0) | |
200 | return 0xffff; | |
201 | return SENSORS_LIMIT((1350000 + rpm) / (rpm * 2), 1, 0xfffe); | |
202 | } | |
203 | ||
1da177e4 | 204 | #define FAN_FROM_REG(val,div) ((val)==0?-1:(val)==255?0:1350000/((val)*(div))) |
17d648bf JD |
205 | /* The divider is fixed to 2 in 16-bit mode */ |
206 | #define FAN16_FROM_REG(val) ((val)==0?-1:(val)==0xffff?0:1350000/((val)*2)) | |
1da177e4 LT |
207 | |
208 | #define TEMP_TO_REG(val) (SENSORS_LIMIT(((val)<0?(((val)-500)/1000):\ | |
209 | ((val)+500)/1000),-128,127)) | |
210 | #define TEMP_FROM_REG(val) (((val)>0x80?(val)-0x100:(val))*1000) | |
211 | ||
1da177e4 LT |
212 | #define PWM_TO_REG(val) ((val) >> 1) |
213 | #define PWM_FROM_REG(val) (((val)&0x7f) << 1) | |
214 | ||
215 | static int DIV_TO_REG(int val) | |
216 | { | |
217 | int answer = 0; | |
b9e349f7 | 218 | while (answer < 7 && (val >>= 1)) |
1da177e4 LT |
219 | answer++; |
220 | return answer; | |
221 | } | |
222 | #define DIV_FROM_REG(val) (1 << (val)) | |
223 | ||
f8d0c19a JD |
224 | static const unsigned int pwm_freq[8] = { |
225 | 48000000 / 128, | |
226 | 24000000 / 128, | |
227 | 12000000 / 128, | |
228 | 8000000 / 128, | |
229 | 6000000 / 128, | |
230 | 3000000 / 128, | |
231 | 1500000 / 128, | |
232 | 750000 / 128, | |
233 | }; | |
234 | ||
1da177e4 | 235 | |
b74f3fdd | 236 | struct it87_sio_data { |
237 | enum chips type; | |
238 | /* Values read from Super-I/O config space */ | |
0475169c | 239 | u8 revision; |
b74f3fdd | 240 | u8 vid_value; |
98dd22c3 JD |
241 | /* Values set based on DMI strings */ |
242 | u8 skip_pwm; | |
b74f3fdd | 243 | }; |
244 | ||
ed6bafbf JD |
245 | /* For each registered chip, we need to keep some data in memory. |
246 | The structure is dynamically allocated. */ | |
1da177e4 | 247 | struct it87_data { |
1beeffe4 | 248 | struct device *hwmon_dev; |
1da177e4 | 249 | enum chips type; |
0475169c | 250 | u8 revision; |
1da177e4 | 251 | |
b74f3fdd | 252 | unsigned short addr; |
253 | const char *name; | |
9a61bf63 | 254 | struct mutex update_lock; |
1da177e4 LT |
255 | char valid; /* !=0 if following fields are valid */ |
256 | unsigned long last_updated; /* In jiffies */ | |
257 | ||
258 | u8 in[9]; /* Register value */ | |
3543a53f JD |
259 | u8 in_max[8]; /* Register value */ |
260 | u8 in_min[8]; /* Register value */ | |
9060f8bd | 261 | u8 has_fan; /* Bitfield, fans enabled */ |
c7f1f716 JD |
262 | u16 fan[5]; /* Register values, possibly combined */ |
263 | u16 fan_min[5]; /* Register values, possibly combined */ | |
1da177e4 LT |
264 | u8 temp[3]; /* Register value */ |
265 | u8 temp_high[3]; /* Register value */ | |
266 | u8 temp_low[3]; /* Register value */ | |
267 | u8 sensor; /* Register value */ | |
268 | u8 fan_div[3]; /* Register encoding, shifted right */ | |
269 | u8 vid; /* Register encoding, combined */ | |
a7be58a1 | 270 | u8 vrm; |
1da177e4 LT |
271 | u32 alarms; /* Register encoding, combined */ |
272 | u8 fan_main_ctrl; /* Register value */ | |
f8d0c19a | 273 | u8 fan_ctl; /* Register value */ |
1da177e4 LT |
274 | u8 manual_pwm_ctl[3]; /* manual PWM value set by user */ |
275 | }; | |
276 | ||
0475169c AP |
277 | static inline int has_16bit_fans(const struct it87_data *data) |
278 | { | |
816d8c6a | 279 | /* IT8705F Datasheet 0.4.1, 3h == Version G. |
859b9ef3 | 280 | IT8712F Datasheet 0.9.1, section 8.3.5 indicates 8h == Version J. |
816d8c6a AP |
281 | These are the first revisions with 16bit tachometer support. */ |
282 | return (data->type == it87 && data->revision >= 0x03) | |
859b9ef3 | 283 | || (data->type == it8712 && data->revision >= 0x08) |
0475169c AP |
284 | || data->type == it8716 |
285 | || data->type == it8718; | |
286 | } | |
1da177e4 | 287 | |
b74f3fdd | 288 | static int it87_probe(struct platform_device *pdev); |
d0546128 | 289 | static int __devexit it87_remove(struct platform_device *pdev); |
1da177e4 | 290 | |
b74f3fdd | 291 | static int it87_read_value(struct it87_data *data, u8 reg); |
292 | static void it87_write_value(struct it87_data *data, u8 reg, u8 value); | |
1da177e4 | 293 | static struct it87_data *it87_update_device(struct device *dev); |
b74f3fdd | 294 | static int it87_check_pwm(struct device *dev); |
295 | static void it87_init_device(struct platform_device *pdev); | |
1da177e4 LT |
296 | |
297 | ||
b74f3fdd | 298 | static struct platform_driver it87_driver = { |
cdaf7934 | 299 | .driver = { |
87218842 | 300 | .owner = THIS_MODULE, |
b74f3fdd | 301 | .name = DRVNAME, |
cdaf7934 | 302 | }, |
b74f3fdd | 303 | .probe = it87_probe, |
304 | .remove = __devexit_p(it87_remove), | |
fde09509 JD |
305 | }; |
306 | ||
20ad93d4 JD |
307 | static ssize_t show_in(struct device *dev, struct device_attribute *attr, |
308 | char *buf) | |
1da177e4 | 309 | { |
20ad93d4 JD |
310 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
311 | int nr = sensor_attr->index; | |
312 | ||
1da177e4 LT |
313 | struct it87_data *data = it87_update_device(dev); |
314 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr])); | |
315 | } | |
316 | ||
20ad93d4 JD |
317 | static ssize_t show_in_min(struct device *dev, struct device_attribute *attr, |
318 | char *buf) | |
1da177e4 | 319 | { |
20ad93d4 JD |
320 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
321 | int nr = sensor_attr->index; | |
322 | ||
1da177e4 LT |
323 | struct it87_data *data = it87_update_device(dev); |
324 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr])); | |
325 | } | |
326 | ||
20ad93d4 JD |
327 | static ssize_t show_in_max(struct device *dev, struct device_attribute *attr, |
328 | char *buf) | |
1da177e4 | 329 | { |
20ad93d4 JD |
330 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
331 | int nr = sensor_attr->index; | |
332 | ||
1da177e4 LT |
333 | struct it87_data *data = it87_update_device(dev); |
334 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr])); | |
335 | } | |
336 | ||
20ad93d4 JD |
337 | static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, |
338 | const char *buf, size_t count) | |
1da177e4 | 339 | { |
20ad93d4 JD |
340 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
341 | int nr = sensor_attr->index; | |
342 | ||
b74f3fdd | 343 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
344 | unsigned long val = simple_strtoul(buf, NULL, 10); |
345 | ||
9a61bf63 | 346 | mutex_lock(&data->update_lock); |
1da177e4 | 347 | data->in_min[nr] = IN_TO_REG(val); |
b74f3fdd | 348 | it87_write_value(data, IT87_REG_VIN_MIN(nr), |
1da177e4 | 349 | data->in_min[nr]); |
9a61bf63 | 350 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
351 | return count; |
352 | } | |
20ad93d4 JD |
353 | static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, |
354 | const char *buf, size_t count) | |
1da177e4 | 355 | { |
20ad93d4 JD |
356 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
357 | int nr = sensor_attr->index; | |
358 | ||
b74f3fdd | 359 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
360 | unsigned long val = simple_strtoul(buf, NULL, 10); |
361 | ||
9a61bf63 | 362 | mutex_lock(&data->update_lock); |
1da177e4 | 363 | data->in_max[nr] = IN_TO_REG(val); |
b74f3fdd | 364 | it87_write_value(data, IT87_REG_VIN_MAX(nr), |
1da177e4 | 365 | data->in_max[nr]); |
9a61bf63 | 366 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
367 | return count; |
368 | } | |
369 | ||
370 | #define show_in_offset(offset) \ | |
20ad93d4 JD |
371 | static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ |
372 | show_in, NULL, offset); | |
1da177e4 LT |
373 | |
374 | #define limit_in_offset(offset) \ | |
20ad93d4 JD |
375 | static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ |
376 | show_in_min, set_in_min, offset); \ | |
377 | static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ | |
378 | show_in_max, set_in_max, offset); | |
1da177e4 LT |
379 | |
380 | show_in_offset(0); | |
381 | limit_in_offset(0); | |
382 | show_in_offset(1); | |
383 | limit_in_offset(1); | |
384 | show_in_offset(2); | |
385 | limit_in_offset(2); | |
386 | show_in_offset(3); | |
387 | limit_in_offset(3); | |
388 | show_in_offset(4); | |
389 | limit_in_offset(4); | |
390 | show_in_offset(5); | |
391 | limit_in_offset(5); | |
392 | show_in_offset(6); | |
393 | limit_in_offset(6); | |
394 | show_in_offset(7); | |
395 | limit_in_offset(7); | |
396 | show_in_offset(8); | |
397 | ||
398 | /* 3 temperatures */ | |
20ad93d4 JD |
399 | static ssize_t show_temp(struct device *dev, struct device_attribute *attr, |
400 | char *buf) | |
1da177e4 | 401 | { |
20ad93d4 JD |
402 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
403 | int nr = sensor_attr->index; | |
404 | ||
1da177e4 LT |
405 | struct it87_data *data = it87_update_device(dev); |
406 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr])); | |
407 | } | |
20ad93d4 JD |
408 | static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr, |
409 | char *buf) | |
1da177e4 | 410 | { |
20ad93d4 JD |
411 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
412 | int nr = sensor_attr->index; | |
413 | ||
1da177e4 LT |
414 | struct it87_data *data = it87_update_device(dev); |
415 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[nr])); | |
416 | } | |
20ad93d4 JD |
417 | static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr, |
418 | char *buf) | |
1da177e4 | 419 | { |
20ad93d4 JD |
420 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
421 | int nr = sensor_attr->index; | |
422 | ||
1da177e4 LT |
423 | struct it87_data *data = it87_update_device(dev); |
424 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_low[nr])); | |
425 | } | |
20ad93d4 JD |
426 | static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, |
427 | const char *buf, size_t count) | |
1da177e4 | 428 | { |
20ad93d4 JD |
429 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
430 | int nr = sensor_attr->index; | |
431 | ||
b74f3fdd | 432 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
433 | int val = simple_strtol(buf, NULL, 10); |
434 | ||
9a61bf63 | 435 | mutex_lock(&data->update_lock); |
1da177e4 | 436 | data->temp_high[nr] = TEMP_TO_REG(val); |
b74f3fdd | 437 | it87_write_value(data, IT87_REG_TEMP_HIGH(nr), data->temp_high[nr]); |
9a61bf63 | 438 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
439 | return count; |
440 | } | |
20ad93d4 JD |
441 | static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr, |
442 | const char *buf, size_t count) | |
1da177e4 | 443 | { |
20ad93d4 JD |
444 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
445 | int nr = sensor_attr->index; | |
446 | ||
b74f3fdd | 447 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
448 | int val = simple_strtol(buf, NULL, 10); |
449 | ||
9a61bf63 | 450 | mutex_lock(&data->update_lock); |
1da177e4 | 451 | data->temp_low[nr] = TEMP_TO_REG(val); |
b74f3fdd | 452 | it87_write_value(data, IT87_REG_TEMP_LOW(nr), data->temp_low[nr]); |
9a61bf63 | 453 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
454 | return count; |
455 | } | |
456 | #define show_temp_offset(offset) \ | |
20ad93d4 JD |
457 | static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ |
458 | show_temp, NULL, offset - 1); \ | |
459 | static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ | |
460 | show_temp_max, set_temp_max, offset - 1); \ | |
461 | static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ | |
462 | show_temp_min, set_temp_min, offset - 1); | |
1da177e4 LT |
463 | |
464 | show_temp_offset(1); | |
465 | show_temp_offset(2); | |
466 | show_temp_offset(3); | |
467 | ||
20ad93d4 JD |
468 | static ssize_t show_sensor(struct device *dev, struct device_attribute *attr, |
469 | char *buf) | |
1da177e4 | 470 | { |
20ad93d4 JD |
471 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
472 | int nr = sensor_attr->index; | |
473 | ||
1da177e4 LT |
474 | struct it87_data *data = it87_update_device(dev); |
475 | u8 reg = data->sensor; /* In case the value is updated while we use it */ | |
476 | ||
477 | if (reg & (1 << nr)) | |
478 | return sprintf(buf, "3\n"); /* thermal diode */ | |
479 | if (reg & (8 << nr)) | |
480 | return sprintf(buf, "2\n"); /* thermistor */ | |
481 | return sprintf(buf, "0\n"); /* disabled */ | |
482 | } | |
20ad93d4 JD |
483 | static ssize_t set_sensor(struct device *dev, struct device_attribute *attr, |
484 | const char *buf, size_t count) | |
1da177e4 | 485 | { |
20ad93d4 JD |
486 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
487 | int nr = sensor_attr->index; | |
488 | ||
b74f3fdd | 489 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
490 | int val = simple_strtol(buf, NULL, 10); |
491 | ||
9a61bf63 | 492 | mutex_lock(&data->update_lock); |
1da177e4 LT |
493 | |
494 | data->sensor &= ~(1 << nr); | |
495 | data->sensor &= ~(8 << nr); | |
496 | /* 3 = thermal diode; 2 = thermistor; 0 = disabled */ | |
497 | if (val == 3) | |
498 | data->sensor |= 1 << nr; | |
499 | else if (val == 2) | |
500 | data->sensor |= 8 << nr; | |
501 | else if (val != 0) { | |
9a61bf63 | 502 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
503 | return -EINVAL; |
504 | } | |
b74f3fdd | 505 | it87_write_value(data, IT87_REG_TEMP_ENABLE, data->sensor); |
9a61bf63 | 506 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
507 | return count; |
508 | } | |
509 | #define show_sensor_offset(offset) \ | |
20ad93d4 JD |
510 | static SENSOR_DEVICE_ATTR(temp##offset##_type, S_IRUGO | S_IWUSR, \ |
511 | show_sensor, set_sensor, offset - 1); | |
1da177e4 LT |
512 | |
513 | show_sensor_offset(1); | |
514 | show_sensor_offset(2); | |
515 | show_sensor_offset(3); | |
516 | ||
517 | /* 3 Fans */ | |
20ad93d4 JD |
518 | static ssize_t show_fan(struct device *dev, struct device_attribute *attr, |
519 | char *buf) | |
1da177e4 | 520 | { |
20ad93d4 JD |
521 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
522 | int nr = sensor_attr->index; | |
523 | ||
1da177e4 LT |
524 | struct it87_data *data = it87_update_device(dev); |
525 | return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan[nr], | |
526 | DIV_FROM_REG(data->fan_div[nr]))); | |
527 | } | |
20ad93d4 JD |
528 | static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr, |
529 | char *buf) | |
1da177e4 | 530 | { |
20ad93d4 JD |
531 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
532 | int nr = sensor_attr->index; | |
533 | ||
1da177e4 LT |
534 | struct it87_data *data = it87_update_device(dev); |
535 | return sprintf(buf,"%d\n", | |
536 | FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr]))); | |
537 | } | |
20ad93d4 JD |
538 | static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr, |
539 | char *buf) | |
1da177e4 | 540 | { |
20ad93d4 JD |
541 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
542 | int nr = sensor_attr->index; | |
543 | ||
1da177e4 LT |
544 | struct it87_data *data = it87_update_device(dev); |
545 | return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr])); | |
546 | } | |
20ad93d4 JD |
547 | static ssize_t show_pwm_enable(struct device *dev, struct device_attribute *attr, |
548 | char *buf) | |
1da177e4 | 549 | { |
20ad93d4 JD |
550 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
551 | int nr = sensor_attr->index; | |
552 | ||
1da177e4 LT |
553 | struct it87_data *data = it87_update_device(dev); |
554 | return sprintf(buf,"%d\n", (data->fan_main_ctrl & (1 << nr)) ? 1 : 0); | |
555 | } | |
20ad93d4 JD |
556 | static ssize_t show_pwm(struct device *dev, struct device_attribute *attr, |
557 | char *buf) | |
1da177e4 | 558 | { |
20ad93d4 JD |
559 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
560 | int nr = sensor_attr->index; | |
561 | ||
1da177e4 LT |
562 | struct it87_data *data = it87_update_device(dev); |
563 | return sprintf(buf,"%d\n", data->manual_pwm_ctl[nr]); | |
564 | } | |
f8d0c19a JD |
565 | static ssize_t show_pwm_freq(struct device *dev, struct device_attribute *attr, |
566 | char *buf) | |
567 | { | |
568 | struct it87_data *data = it87_update_device(dev); | |
569 | int index = (data->fan_ctl >> 4) & 0x07; | |
570 | ||
571 | return sprintf(buf, "%u\n", pwm_freq[index]); | |
572 | } | |
20ad93d4 JD |
573 | static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, |
574 | const char *buf, size_t count) | |
1da177e4 | 575 | { |
20ad93d4 JD |
576 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
577 | int nr = sensor_attr->index; | |
578 | ||
b74f3fdd | 579 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 | 580 | int val = simple_strtol(buf, NULL, 10); |
7f999aa7 | 581 | u8 reg; |
1da177e4 | 582 | |
9a61bf63 | 583 | mutex_lock(&data->update_lock); |
b74f3fdd | 584 | reg = it87_read_value(data, IT87_REG_FAN_DIV); |
07eab46d JD |
585 | switch (nr) { |
586 | case 0: data->fan_div[nr] = reg & 0x07; break; | |
587 | case 1: data->fan_div[nr] = (reg >> 3) & 0x07; break; | |
588 | case 2: data->fan_div[nr] = (reg & 0x40) ? 3 : 1; break; | |
589 | } | |
590 | ||
1da177e4 | 591 | data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); |
c7f1f716 | 592 | it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan_min[nr]); |
9a61bf63 | 593 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
594 | return count; |
595 | } | |
20ad93d4 JD |
596 | static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, |
597 | const char *buf, size_t count) | |
1da177e4 | 598 | { |
20ad93d4 JD |
599 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
600 | int nr = sensor_attr->index; | |
601 | ||
b74f3fdd | 602 | struct it87_data *data = dev_get_drvdata(dev); |
b9e349f7 | 603 | unsigned long val = simple_strtoul(buf, NULL, 10); |
8ab4ec3e | 604 | int min; |
1da177e4 LT |
605 | u8 old; |
606 | ||
9a61bf63 | 607 | mutex_lock(&data->update_lock); |
b74f3fdd | 608 | old = it87_read_value(data, IT87_REG_FAN_DIV); |
1da177e4 | 609 | |
8ab4ec3e JD |
610 | /* Save fan min limit */ |
611 | min = FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr])); | |
1da177e4 LT |
612 | |
613 | switch (nr) { | |
614 | case 0: | |
615 | case 1: | |
616 | data->fan_div[nr] = DIV_TO_REG(val); | |
617 | break; | |
618 | case 2: | |
619 | if (val < 8) | |
620 | data->fan_div[nr] = 1; | |
621 | else | |
622 | data->fan_div[nr] = 3; | |
623 | } | |
624 | val = old & 0x80; | |
625 | val |= (data->fan_div[0] & 0x07); | |
626 | val |= (data->fan_div[1] & 0x07) << 3; | |
627 | if (data->fan_div[2] == 3) | |
628 | val |= 0x1 << 6; | |
b74f3fdd | 629 | it87_write_value(data, IT87_REG_FAN_DIV, val); |
1da177e4 | 630 | |
8ab4ec3e JD |
631 | /* Restore fan min limit */ |
632 | data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); | |
c7f1f716 | 633 | it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan_min[nr]); |
8ab4ec3e | 634 | |
9a61bf63 | 635 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
636 | return count; |
637 | } | |
20ad93d4 JD |
638 | static ssize_t set_pwm_enable(struct device *dev, |
639 | struct device_attribute *attr, const char *buf, size_t count) | |
1da177e4 | 640 | { |
20ad93d4 JD |
641 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
642 | int nr = sensor_attr->index; | |
643 | ||
b74f3fdd | 644 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
645 | int val = simple_strtol(buf, NULL, 10); |
646 | ||
9a61bf63 | 647 | mutex_lock(&data->update_lock); |
1da177e4 LT |
648 | |
649 | if (val == 0) { | |
650 | int tmp; | |
651 | /* make sure the fan is on when in on/off mode */ | |
b74f3fdd | 652 | tmp = it87_read_value(data, IT87_REG_FAN_CTL); |
653 | it87_write_value(data, IT87_REG_FAN_CTL, tmp | (1 << nr)); | |
1da177e4 LT |
654 | /* set on/off mode */ |
655 | data->fan_main_ctrl &= ~(1 << nr); | |
b74f3fdd | 656 | it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl); |
1da177e4 LT |
657 | } else if (val == 1) { |
658 | /* set SmartGuardian mode */ | |
659 | data->fan_main_ctrl |= (1 << nr); | |
b74f3fdd | 660 | it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl); |
1da177e4 | 661 | /* set saved pwm value, clear FAN_CTLX PWM mode bit */ |
b74f3fdd | 662 | it87_write_value(data, IT87_REG_PWM(nr), PWM_TO_REG(data->manual_pwm_ctl[nr])); |
1da177e4 | 663 | } else { |
9a61bf63 | 664 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
665 | return -EINVAL; |
666 | } | |
667 | ||
9a61bf63 | 668 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
669 | return count; |
670 | } | |
20ad93d4 JD |
671 | static ssize_t set_pwm(struct device *dev, struct device_attribute *attr, |
672 | const char *buf, size_t count) | |
1da177e4 | 673 | { |
20ad93d4 JD |
674 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
675 | int nr = sensor_attr->index; | |
676 | ||
b74f3fdd | 677 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
678 | int val = simple_strtol(buf, NULL, 10); |
679 | ||
680 | if (val < 0 || val > 255) | |
681 | return -EINVAL; | |
682 | ||
9a61bf63 | 683 | mutex_lock(&data->update_lock); |
1da177e4 LT |
684 | data->manual_pwm_ctl[nr] = val; |
685 | if (data->fan_main_ctrl & (1 << nr)) | |
b74f3fdd | 686 | it87_write_value(data, IT87_REG_PWM(nr), PWM_TO_REG(data->manual_pwm_ctl[nr])); |
9a61bf63 | 687 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
688 | return count; |
689 | } | |
f8d0c19a JD |
690 | static ssize_t set_pwm_freq(struct device *dev, |
691 | struct device_attribute *attr, const char *buf, size_t count) | |
692 | { | |
b74f3fdd | 693 | struct it87_data *data = dev_get_drvdata(dev); |
f8d0c19a JD |
694 | unsigned long val = simple_strtoul(buf, NULL, 10); |
695 | int i; | |
696 | ||
697 | /* Search for the nearest available frequency */ | |
698 | for (i = 0; i < 7; i++) { | |
699 | if (val > (pwm_freq[i] + pwm_freq[i+1]) / 2) | |
700 | break; | |
701 | } | |
702 | ||
703 | mutex_lock(&data->update_lock); | |
b74f3fdd | 704 | data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL) & 0x8f; |
f8d0c19a | 705 | data->fan_ctl |= i << 4; |
b74f3fdd | 706 | it87_write_value(data, IT87_REG_FAN_CTL, data->fan_ctl); |
f8d0c19a JD |
707 | mutex_unlock(&data->update_lock); |
708 | ||
709 | return count; | |
710 | } | |
1da177e4 | 711 | |
20ad93d4 JD |
712 | #define show_fan_offset(offset) \ |
713 | static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ | |
714 | show_fan, NULL, offset - 1); \ | |
715 | static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ | |
716 | show_fan_min, set_fan_min, offset - 1); \ | |
717 | static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ | |
718 | show_fan_div, set_fan_div, offset - 1); | |
1da177e4 LT |
719 | |
720 | show_fan_offset(1); | |
721 | show_fan_offset(2); | |
722 | show_fan_offset(3); | |
723 | ||
724 | #define show_pwm_offset(offset) \ | |
20ad93d4 JD |
725 | static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \ |
726 | show_pwm_enable, set_pwm_enable, offset - 1); \ | |
727 | static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \ | |
f8d0c19a JD |
728 | show_pwm, set_pwm, offset - 1); \ |
729 | static DEVICE_ATTR(pwm##offset##_freq, \ | |
730 | (offset == 1 ? S_IRUGO | S_IWUSR : S_IRUGO), \ | |
731 | show_pwm_freq, (offset == 1 ? set_pwm_freq : NULL)); | |
1da177e4 LT |
732 | |
733 | show_pwm_offset(1); | |
734 | show_pwm_offset(2); | |
735 | show_pwm_offset(3); | |
736 | ||
17d648bf JD |
737 | /* A different set of callbacks for 16-bit fans */ |
738 | static ssize_t show_fan16(struct device *dev, struct device_attribute *attr, | |
739 | char *buf) | |
740 | { | |
741 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
742 | int nr = sensor_attr->index; | |
743 | struct it87_data *data = it87_update_device(dev); | |
744 | return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan[nr])); | |
745 | } | |
746 | ||
747 | static ssize_t show_fan16_min(struct device *dev, struct device_attribute *attr, | |
748 | char *buf) | |
749 | { | |
750 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
751 | int nr = sensor_attr->index; | |
752 | struct it87_data *data = it87_update_device(dev); | |
753 | return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan_min[nr])); | |
754 | } | |
755 | ||
756 | static ssize_t set_fan16_min(struct device *dev, struct device_attribute *attr, | |
757 | const char *buf, size_t count) | |
758 | { | |
759 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
760 | int nr = sensor_attr->index; | |
b74f3fdd | 761 | struct it87_data *data = dev_get_drvdata(dev); |
17d648bf JD |
762 | int val = simple_strtol(buf, NULL, 10); |
763 | ||
764 | mutex_lock(&data->update_lock); | |
765 | data->fan_min[nr] = FAN16_TO_REG(val); | |
c7f1f716 | 766 | it87_write_value(data, IT87_REG_FAN_MIN[nr], |
17d648bf | 767 | data->fan_min[nr] & 0xff); |
c7f1f716 | 768 | it87_write_value(data, IT87_REG_FANX_MIN[nr], |
17d648bf JD |
769 | data->fan_min[nr] >> 8); |
770 | mutex_unlock(&data->update_lock); | |
771 | return count; | |
772 | } | |
773 | ||
774 | /* We want to use the same sysfs file names as 8-bit fans, but we need | |
775 | different variable names, so we have to use SENSOR_ATTR instead of | |
776 | SENSOR_DEVICE_ATTR. */ | |
777 | #define show_fan16_offset(offset) \ | |
778 | static struct sensor_device_attribute sensor_dev_attr_fan##offset##_input16 \ | |
779 | = SENSOR_ATTR(fan##offset##_input, S_IRUGO, \ | |
780 | show_fan16, NULL, offset - 1); \ | |
781 | static struct sensor_device_attribute sensor_dev_attr_fan##offset##_min16 \ | |
782 | = SENSOR_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ | |
783 | show_fan16_min, set_fan16_min, offset - 1) | |
784 | ||
785 | show_fan16_offset(1); | |
786 | show_fan16_offset(2); | |
787 | show_fan16_offset(3); | |
c7f1f716 JD |
788 | show_fan16_offset(4); |
789 | show_fan16_offset(5); | |
17d648bf | 790 | |
1da177e4 | 791 | /* Alarms */ |
30f74292 | 792 | static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
793 | { |
794 | struct it87_data *data = it87_update_device(dev); | |
68188ba7 | 795 | return sprintf(buf, "%u\n", data->alarms); |
1da177e4 | 796 | } |
1d66c64c | 797 | static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); |
1da177e4 | 798 | |
0124dd78 JD |
799 | static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, |
800 | char *buf) | |
801 | { | |
802 | int bitnr = to_sensor_dev_attr(attr)->index; | |
803 | struct it87_data *data = it87_update_device(dev); | |
804 | return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); | |
805 | } | |
806 | static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8); | |
807 | static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9); | |
808 | static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10); | |
809 | static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 11); | |
810 | static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 12); | |
811 | static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 13); | |
812 | static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 14); | |
813 | static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 15); | |
814 | static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 0); | |
815 | static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 1); | |
816 | static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 2); | |
817 | static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 3); | |
818 | static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 6); | |
819 | static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 16); | |
820 | static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 17); | |
821 | static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 18); | |
822 | ||
1da177e4 | 823 | static ssize_t |
30f74292 | 824 | show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 | 825 | { |
90d6619a | 826 | struct it87_data *data = dev_get_drvdata(dev); |
a7be58a1 | 827 | return sprintf(buf, "%u\n", data->vrm); |
1da177e4 LT |
828 | } |
829 | static ssize_t | |
30f74292 | 830 | store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4 | 831 | { |
b74f3fdd | 832 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
833 | u32 val; |
834 | ||
835 | val = simple_strtoul(buf, NULL, 10); | |
836 | data->vrm = val; | |
837 | ||
838 | return count; | |
839 | } | |
840 | static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg); | |
1da177e4 LT |
841 | |
842 | static ssize_t | |
30f74292 | 843 | show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
844 | { |
845 | struct it87_data *data = it87_update_device(dev); | |
846 | return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm)); | |
847 | } | |
848 | static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL); | |
87808be4 | 849 | |
b74f3fdd | 850 | static ssize_t show_name(struct device *dev, struct device_attribute |
851 | *devattr, char *buf) | |
852 | { | |
853 | struct it87_data *data = dev_get_drvdata(dev); | |
854 | return sprintf(buf, "%s\n", data->name); | |
855 | } | |
856 | static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); | |
857 | ||
87808be4 JD |
858 | static struct attribute *it87_attributes[] = { |
859 | &sensor_dev_attr_in0_input.dev_attr.attr, | |
860 | &sensor_dev_attr_in1_input.dev_attr.attr, | |
861 | &sensor_dev_attr_in2_input.dev_attr.attr, | |
862 | &sensor_dev_attr_in3_input.dev_attr.attr, | |
863 | &sensor_dev_attr_in4_input.dev_attr.attr, | |
864 | &sensor_dev_attr_in5_input.dev_attr.attr, | |
865 | &sensor_dev_attr_in6_input.dev_attr.attr, | |
866 | &sensor_dev_attr_in7_input.dev_attr.attr, | |
867 | &sensor_dev_attr_in8_input.dev_attr.attr, | |
868 | &sensor_dev_attr_in0_min.dev_attr.attr, | |
869 | &sensor_dev_attr_in1_min.dev_attr.attr, | |
870 | &sensor_dev_attr_in2_min.dev_attr.attr, | |
871 | &sensor_dev_attr_in3_min.dev_attr.attr, | |
872 | &sensor_dev_attr_in4_min.dev_attr.attr, | |
873 | &sensor_dev_attr_in5_min.dev_attr.attr, | |
874 | &sensor_dev_attr_in6_min.dev_attr.attr, | |
875 | &sensor_dev_attr_in7_min.dev_attr.attr, | |
876 | &sensor_dev_attr_in0_max.dev_attr.attr, | |
877 | &sensor_dev_attr_in1_max.dev_attr.attr, | |
878 | &sensor_dev_attr_in2_max.dev_attr.attr, | |
879 | &sensor_dev_attr_in3_max.dev_attr.attr, | |
880 | &sensor_dev_attr_in4_max.dev_attr.attr, | |
881 | &sensor_dev_attr_in5_max.dev_attr.attr, | |
882 | &sensor_dev_attr_in6_max.dev_attr.attr, | |
883 | &sensor_dev_attr_in7_max.dev_attr.attr, | |
0124dd78 JD |
884 | &sensor_dev_attr_in0_alarm.dev_attr.attr, |
885 | &sensor_dev_attr_in1_alarm.dev_attr.attr, | |
886 | &sensor_dev_attr_in2_alarm.dev_attr.attr, | |
887 | &sensor_dev_attr_in3_alarm.dev_attr.attr, | |
888 | &sensor_dev_attr_in4_alarm.dev_attr.attr, | |
889 | &sensor_dev_attr_in5_alarm.dev_attr.attr, | |
890 | &sensor_dev_attr_in6_alarm.dev_attr.attr, | |
891 | &sensor_dev_attr_in7_alarm.dev_attr.attr, | |
87808be4 JD |
892 | |
893 | &sensor_dev_attr_temp1_input.dev_attr.attr, | |
894 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
895 | &sensor_dev_attr_temp3_input.dev_attr.attr, | |
896 | &sensor_dev_attr_temp1_max.dev_attr.attr, | |
897 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
898 | &sensor_dev_attr_temp3_max.dev_attr.attr, | |
899 | &sensor_dev_attr_temp1_min.dev_attr.attr, | |
900 | &sensor_dev_attr_temp2_min.dev_attr.attr, | |
901 | &sensor_dev_attr_temp3_min.dev_attr.attr, | |
902 | &sensor_dev_attr_temp1_type.dev_attr.attr, | |
903 | &sensor_dev_attr_temp2_type.dev_attr.attr, | |
904 | &sensor_dev_attr_temp3_type.dev_attr.attr, | |
0124dd78 JD |
905 | &sensor_dev_attr_temp1_alarm.dev_attr.attr, |
906 | &sensor_dev_attr_temp2_alarm.dev_attr.attr, | |
907 | &sensor_dev_attr_temp3_alarm.dev_attr.attr, | |
87808be4 JD |
908 | |
909 | &dev_attr_alarms.attr, | |
b74f3fdd | 910 | &dev_attr_name.attr, |
87808be4 JD |
911 | NULL |
912 | }; | |
913 | ||
914 | static const struct attribute_group it87_group = { | |
915 | .attrs = it87_attributes, | |
916 | }; | |
917 | ||
918 | static struct attribute *it87_attributes_opt[] = { | |
919 | &sensor_dev_attr_fan1_input16.dev_attr.attr, | |
920 | &sensor_dev_attr_fan1_min16.dev_attr.attr, | |
921 | &sensor_dev_attr_fan2_input16.dev_attr.attr, | |
922 | &sensor_dev_attr_fan2_min16.dev_attr.attr, | |
923 | &sensor_dev_attr_fan3_input16.dev_attr.attr, | |
924 | &sensor_dev_attr_fan3_min16.dev_attr.attr, | |
c7f1f716 JD |
925 | &sensor_dev_attr_fan4_input16.dev_attr.attr, |
926 | &sensor_dev_attr_fan4_min16.dev_attr.attr, | |
927 | &sensor_dev_attr_fan5_input16.dev_attr.attr, | |
928 | &sensor_dev_attr_fan5_min16.dev_attr.attr, | |
87808be4 JD |
929 | |
930 | &sensor_dev_attr_fan1_input.dev_attr.attr, | |
931 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
932 | &sensor_dev_attr_fan1_div.dev_attr.attr, | |
933 | &sensor_dev_attr_fan2_input.dev_attr.attr, | |
934 | &sensor_dev_attr_fan2_min.dev_attr.attr, | |
935 | &sensor_dev_attr_fan2_div.dev_attr.attr, | |
936 | &sensor_dev_attr_fan3_input.dev_attr.attr, | |
937 | &sensor_dev_attr_fan3_min.dev_attr.attr, | |
938 | &sensor_dev_attr_fan3_div.dev_attr.attr, | |
939 | ||
0124dd78 JD |
940 | &sensor_dev_attr_fan1_alarm.dev_attr.attr, |
941 | &sensor_dev_attr_fan2_alarm.dev_attr.attr, | |
942 | &sensor_dev_attr_fan3_alarm.dev_attr.attr, | |
943 | &sensor_dev_attr_fan4_alarm.dev_attr.attr, | |
944 | &sensor_dev_attr_fan5_alarm.dev_attr.attr, | |
945 | ||
87808be4 JD |
946 | &sensor_dev_attr_pwm1_enable.dev_attr.attr, |
947 | &sensor_dev_attr_pwm2_enable.dev_attr.attr, | |
948 | &sensor_dev_attr_pwm3_enable.dev_attr.attr, | |
949 | &sensor_dev_attr_pwm1.dev_attr.attr, | |
950 | &sensor_dev_attr_pwm2.dev_attr.attr, | |
951 | &sensor_dev_attr_pwm3.dev_attr.attr, | |
d5b0b5d6 JD |
952 | &dev_attr_pwm1_freq.attr, |
953 | &dev_attr_pwm2_freq.attr, | |
954 | &dev_attr_pwm3_freq.attr, | |
87808be4 JD |
955 | |
956 | &dev_attr_vrm.attr, | |
957 | &dev_attr_cpu0_vid.attr, | |
958 | NULL | |
959 | }; | |
960 | ||
961 | static const struct attribute_group it87_group_opt = { | |
962 | .attrs = it87_attributes_opt, | |
963 | }; | |
1da177e4 | 964 | |
2d8672c5 | 965 | /* SuperIO detection - will change isa_address if a chip is found */ |
b74f3fdd | 966 | static int __init it87_find(unsigned short *address, |
967 | struct it87_sio_data *sio_data) | |
1da177e4 LT |
968 | { |
969 | int err = -ENODEV; | |
b74f3fdd | 970 | u16 chip_type; |
98dd22c3 | 971 | const char *board_vendor, *board_name; |
1da177e4 LT |
972 | |
973 | superio_enter(); | |
67b671bc | 974 | chip_type = force_id ? force_id : superio_inw(DEVID); |
b74f3fdd | 975 | |
976 | switch (chip_type) { | |
977 | case IT8705F_DEVID: | |
978 | sio_data->type = it87; | |
979 | break; | |
980 | case IT8712F_DEVID: | |
981 | sio_data->type = it8712; | |
982 | break; | |
983 | case IT8716F_DEVID: | |
984 | case IT8726F_DEVID: | |
985 | sio_data->type = it8716; | |
986 | break; | |
987 | case IT8718F_DEVID: | |
988 | sio_data->type = it8718; | |
989 | break; | |
990 | case 0xffff: /* No device at all */ | |
991 | goto exit; | |
992 | default: | |
993 | pr_debug(DRVNAME ": Unsupported chip (DEVID=0x%x)\n", | |
994 | chip_type); | |
995 | goto exit; | |
996 | } | |
1da177e4 | 997 | |
87673dd7 | 998 | superio_select(PME); |
1da177e4 LT |
999 | if (!(superio_inb(IT87_ACT_REG) & 0x01)) { |
1000 | pr_info("it87: Device not activated, skipping\n"); | |
1001 | goto exit; | |
1002 | } | |
1003 | ||
1004 | *address = superio_inw(IT87_BASE_REG) & ~(IT87_EXTENT - 1); | |
1005 | if (*address == 0) { | |
1006 | pr_info("it87: Base address not set, skipping\n"); | |
1007 | goto exit; | |
1008 | } | |
1009 | ||
1010 | err = 0; | |
0475169c | 1011 | sio_data->revision = superio_inb(DEVREV) & 0x0f; |
1da177e4 | 1012 | pr_info("it87: Found IT%04xF chip at 0x%x, revision %d\n", |
0475169c | 1013 | chip_type, *address, sio_data->revision); |
1da177e4 | 1014 | |
87673dd7 JD |
1015 | /* Read GPIO config and VID value from LDN 7 (GPIO) */ |
1016 | if (chip_type != IT8705F_DEVID) { | |
1017 | int reg; | |
1018 | ||
1019 | superio_select(GPIO); | |
1020 | if (chip_type == it8718) | |
b74f3fdd | 1021 | sio_data->vid_value = superio_inb(IT87_SIO_VID_REG); |
87673dd7 JD |
1022 | |
1023 | reg = superio_inb(IT87_SIO_PINX2_REG); | |
1024 | if (reg & (1 << 0)) | |
1025 | pr_info("it87: in3 is VCC (+5V)\n"); | |
1026 | if (reg & (1 << 1)) | |
1027 | pr_info("it87: in7 is VCCH (+5V Stand-By)\n"); | |
1028 | } | |
1029 | ||
98dd22c3 JD |
1030 | /* Disable specific features based on DMI strings */ |
1031 | board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR); | |
1032 | board_name = dmi_get_system_info(DMI_BOARD_NAME); | |
1033 | if (board_vendor && board_name) { | |
1034 | if (strcmp(board_vendor, "nVIDIA") == 0 | |
1035 | && strcmp(board_name, "FN68PT") == 0) { | |
1036 | /* On the Shuttle SN68PT, FAN_CTL2 is apparently not | |
1037 | connected to a fan, but to something else. One user | |
1038 | has reported instant system power-off when changing | |
1039 | the PWM2 duty cycle, so we disable it. | |
1040 | I use the board name string as the trigger in case | |
1041 | the same board is ever used in other systems. */ | |
1042 | pr_info("it87: Disabling pwm2 due to " | |
1043 | "hardware constraints\n"); | |
1044 | sio_data->skip_pwm = (1 << 1); | |
1045 | } | |
1046 | } | |
1047 | ||
1da177e4 LT |
1048 | exit: |
1049 | superio_exit(); | |
1050 | return err; | |
1051 | } | |
1052 | ||
b74f3fdd | 1053 | static int __devinit it87_probe(struct platform_device *pdev) |
1da177e4 | 1054 | { |
1da177e4 | 1055 | struct it87_data *data; |
b74f3fdd | 1056 | struct resource *res; |
1057 | struct device *dev = &pdev->dev; | |
1058 | struct it87_sio_data *sio_data = dev->platform_data; | |
1da177e4 | 1059 | int err = 0; |
1da177e4 | 1060 | int enable_pwm_interface; |
b74f3fdd | 1061 | static const char *names[] = { |
1062 | "it87", | |
1063 | "it8712", | |
1064 | "it8716", | |
1065 | "it8718", | |
1066 | }; | |
1067 | ||
1068 | res = platform_get_resource(pdev, IORESOURCE_IO, 0); | |
87b4b663 | 1069 | if (!request_region(res->start, IT87_EC_EXTENT, DRVNAME)) { |
b74f3fdd | 1070 | dev_err(dev, "Failed to request region 0x%lx-0x%lx\n", |
1071 | (unsigned long)res->start, | |
87b4b663 | 1072 | (unsigned long)(res->start + IT87_EC_EXTENT - 1)); |
8e9afcbb JD |
1073 | err = -EBUSY; |
1074 | goto ERROR0; | |
1075 | } | |
1da177e4 | 1076 | |
ba9c2e8d | 1077 | if (!(data = kzalloc(sizeof(struct it87_data), GFP_KERNEL))) { |
1da177e4 LT |
1078 | err = -ENOMEM; |
1079 | goto ERROR1; | |
1080 | } | |
1da177e4 | 1081 | |
b74f3fdd | 1082 | data->addr = res->start; |
1083 | data->type = sio_data->type; | |
0475169c | 1084 | data->revision = sio_data->revision; |
b74f3fdd | 1085 | data->name = names[sio_data->type]; |
1da177e4 LT |
1086 | |
1087 | /* Now, we do the remaining detection. */ | |
b74f3fdd | 1088 | if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80) |
1089 | || it87_read_value(data, IT87_REG_CHIPID) != 0x90) { | |
8e9afcbb JD |
1090 | err = -ENODEV; |
1091 | goto ERROR2; | |
1da177e4 LT |
1092 | } |
1093 | ||
b74f3fdd | 1094 | platform_set_drvdata(pdev, data); |
1da177e4 | 1095 | |
9a61bf63 | 1096 | mutex_init(&data->update_lock); |
1da177e4 | 1097 | |
1da177e4 | 1098 | /* Check PWM configuration */ |
b74f3fdd | 1099 | enable_pwm_interface = it87_check_pwm(dev); |
1da177e4 LT |
1100 | |
1101 | /* Initialize the IT87 chip */ | |
b74f3fdd | 1102 | it87_init_device(pdev); |
1da177e4 LT |
1103 | |
1104 | /* Register sysfs hooks */ | |
b74f3fdd | 1105 | if ((err = sysfs_create_group(&dev->kobj, &it87_group))) |
1106 | goto ERROR2; | |
17d648bf | 1107 | |
9060f8bd | 1108 | /* Do not create fan files for disabled fans */ |
0475169c | 1109 | if (has_16bit_fans(data)) { |
87673dd7 | 1110 | /* 16-bit tachometers */ |
9060f8bd | 1111 | if (data->has_fan & (1 << 0)) { |
b74f3fdd | 1112 | if ((err = device_create_file(dev, |
87808be4 | 1113 | &sensor_dev_attr_fan1_input16.dev_attr)) |
b74f3fdd | 1114 | || (err = device_create_file(dev, |
0124dd78 JD |
1115 | &sensor_dev_attr_fan1_min16.dev_attr)) |
1116 | || (err = device_create_file(dev, | |
1117 | &sensor_dev_attr_fan1_alarm.dev_attr))) | |
87808be4 | 1118 | goto ERROR4; |
9060f8bd JD |
1119 | } |
1120 | if (data->has_fan & (1 << 1)) { | |
b74f3fdd | 1121 | if ((err = device_create_file(dev, |
87808be4 | 1122 | &sensor_dev_attr_fan2_input16.dev_attr)) |
b74f3fdd | 1123 | || (err = device_create_file(dev, |
0124dd78 JD |
1124 | &sensor_dev_attr_fan2_min16.dev_attr)) |
1125 | || (err = device_create_file(dev, | |
1126 | &sensor_dev_attr_fan2_alarm.dev_attr))) | |
87808be4 | 1127 | goto ERROR4; |
9060f8bd JD |
1128 | } |
1129 | if (data->has_fan & (1 << 2)) { | |
b74f3fdd | 1130 | if ((err = device_create_file(dev, |
87808be4 | 1131 | &sensor_dev_attr_fan3_input16.dev_attr)) |
b74f3fdd | 1132 | || (err = device_create_file(dev, |
0124dd78 JD |
1133 | &sensor_dev_attr_fan3_min16.dev_attr)) |
1134 | || (err = device_create_file(dev, | |
1135 | &sensor_dev_attr_fan3_alarm.dev_attr))) | |
87808be4 | 1136 | goto ERROR4; |
9060f8bd | 1137 | } |
c7f1f716 JD |
1138 | if (data->has_fan & (1 << 3)) { |
1139 | if ((err = device_create_file(dev, | |
1140 | &sensor_dev_attr_fan4_input16.dev_attr)) | |
1141 | || (err = device_create_file(dev, | |
0124dd78 JD |
1142 | &sensor_dev_attr_fan4_min16.dev_attr)) |
1143 | || (err = device_create_file(dev, | |
1144 | &sensor_dev_attr_fan4_alarm.dev_attr))) | |
c7f1f716 JD |
1145 | goto ERROR4; |
1146 | } | |
1147 | if (data->has_fan & (1 << 4)) { | |
1148 | if ((err = device_create_file(dev, | |
1149 | &sensor_dev_attr_fan5_input16.dev_attr)) | |
1150 | || (err = device_create_file(dev, | |
0124dd78 JD |
1151 | &sensor_dev_attr_fan5_min16.dev_attr)) |
1152 | || (err = device_create_file(dev, | |
1153 | &sensor_dev_attr_fan5_alarm.dev_attr))) | |
c7f1f716 JD |
1154 | goto ERROR4; |
1155 | } | |
17d648bf | 1156 | } else { |
87673dd7 | 1157 | /* 8-bit tachometers with clock divider */ |
9060f8bd | 1158 | if (data->has_fan & (1 << 0)) { |
b74f3fdd | 1159 | if ((err = device_create_file(dev, |
87808be4 | 1160 | &sensor_dev_attr_fan1_input.dev_attr)) |
b74f3fdd | 1161 | || (err = device_create_file(dev, |
87808be4 | 1162 | &sensor_dev_attr_fan1_min.dev_attr)) |
b74f3fdd | 1163 | || (err = device_create_file(dev, |
0124dd78 JD |
1164 | &sensor_dev_attr_fan1_div.dev_attr)) |
1165 | || (err = device_create_file(dev, | |
1166 | &sensor_dev_attr_fan1_alarm.dev_attr))) | |
87808be4 | 1167 | goto ERROR4; |
9060f8bd JD |
1168 | } |
1169 | if (data->has_fan & (1 << 1)) { | |
b74f3fdd | 1170 | if ((err = device_create_file(dev, |
87808be4 | 1171 | &sensor_dev_attr_fan2_input.dev_attr)) |
b74f3fdd | 1172 | || (err = device_create_file(dev, |
87808be4 | 1173 | &sensor_dev_attr_fan2_min.dev_attr)) |
b74f3fdd | 1174 | || (err = device_create_file(dev, |
0124dd78 JD |
1175 | &sensor_dev_attr_fan2_div.dev_attr)) |
1176 | || (err = device_create_file(dev, | |
1177 | &sensor_dev_attr_fan2_alarm.dev_attr))) | |
87808be4 | 1178 | goto ERROR4; |
9060f8bd JD |
1179 | } |
1180 | if (data->has_fan & (1 << 2)) { | |
b74f3fdd | 1181 | if ((err = device_create_file(dev, |
87808be4 | 1182 | &sensor_dev_attr_fan3_input.dev_attr)) |
b74f3fdd | 1183 | || (err = device_create_file(dev, |
87808be4 | 1184 | &sensor_dev_attr_fan3_min.dev_attr)) |
b74f3fdd | 1185 | || (err = device_create_file(dev, |
0124dd78 JD |
1186 | &sensor_dev_attr_fan3_div.dev_attr)) |
1187 | || (err = device_create_file(dev, | |
1188 | &sensor_dev_attr_fan3_alarm.dev_attr))) | |
87808be4 | 1189 | goto ERROR4; |
9060f8bd | 1190 | } |
17d648bf JD |
1191 | } |
1192 | ||
1da177e4 | 1193 | if (enable_pwm_interface) { |
98dd22c3 JD |
1194 | if (!(sio_data->skip_pwm & (1 << 0))) { |
1195 | if ((err = device_create_file(dev, | |
1196 | &sensor_dev_attr_pwm1_enable.dev_attr)) | |
1197 | || (err = device_create_file(dev, | |
1198 | &sensor_dev_attr_pwm1.dev_attr)) | |
1199 | || (err = device_create_file(dev, | |
1200 | &dev_attr_pwm1_freq))) | |
1201 | goto ERROR4; | |
1202 | } | |
1203 | if (!(sio_data->skip_pwm & (1 << 1))) { | |
1204 | if ((err = device_create_file(dev, | |
1205 | &sensor_dev_attr_pwm2_enable.dev_attr)) | |
1206 | || (err = device_create_file(dev, | |
1207 | &sensor_dev_attr_pwm2.dev_attr)) | |
1208 | || (err = device_create_file(dev, | |
1209 | &dev_attr_pwm2_freq))) | |
1210 | goto ERROR4; | |
1211 | } | |
1212 | if (!(sio_data->skip_pwm & (1 << 2))) { | |
1213 | if ((err = device_create_file(dev, | |
1214 | &sensor_dev_attr_pwm3_enable.dev_attr)) | |
1215 | || (err = device_create_file(dev, | |
1216 | &sensor_dev_attr_pwm3.dev_attr)) | |
1217 | || (err = device_create_file(dev, | |
1218 | &dev_attr_pwm3_freq))) | |
1219 | goto ERROR4; | |
1220 | } | |
1da177e4 LT |
1221 | } |
1222 | ||
87673dd7 JD |
1223 | if (data->type == it8712 || data->type == it8716 |
1224 | || data->type == it8718) { | |
303760b4 | 1225 | data->vrm = vid_which_vrm(); |
87673dd7 | 1226 | /* VID reading from Super-I/O config space if available */ |
b74f3fdd | 1227 | data->vid = sio_data->vid_value; |
1228 | if ((err = device_create_file(dev, | |
87808be4 | 1229 | &dev_attr_vrm)) |
b74f3fdd | 1230 | || (err = device_create_file(dev, |
87808be4 JD |
1231 | &dev_attr_cpu0_vid))) |
1232 | goto ERROR4; | |
1233 | } | |
1234 | ||
1beeffe4 TJ |
1235 | data->hwmon_dev = hwmon_device_register(dev); |
1236 | if (IS_ERR(data->hwmon_dev)) { | |
1237 | err = PTR_ERR(data->hwmon_dev); | |
87808be4 | 1238 | goto ERROR4; |
1da177e4 LT |
1239 | } |
1240 | ||
1241 | return 0; | |
1242 | ||
87808be4 | 1243 | ERROR4: |
b74f3fdd | 1244 | sysfs_remove_group(&dev->kobj, &it87_group); |
1245 | sysfs_remove_group(&dev->kobj, &it87_group_opt); | |
1da177e4 | 1246 | ERROR2: |
b74f3fdd | 1247 | platform_set_drvdata(pdev, NULL); |
1da177e4 LT |
1248 | kfree(data); |
1249 | ERROR1: | |
87b4b663 | 1250 | release_region(res->start, IT87_EC_EXTENT); |
1da177e4 LT |
1251 | ERROR0: |
1252 | return err; | |
1253 | } | |
1254 | ||
b74f3fdd | 1255 | static int __devexit it87_remove(struct platform_device *pdev) |
1da177e4 | 1256 | { |
b74f3fdd | 1257 | struct it87_data *data = platform_get_drvdata(pdev); |
1da177e4 | 1258 | |
1beeffe4 | 1259 | hwmon_device_unregister(data->hwmon_dev); |
b74f3fdd | 1260 | sysfs_remove_group(&pdev->dev.kobj, &it87_group); |
1261 | sysfs_remove_group(&pdev->dev.kobj, &it87_group_opt); | |
943b0830 | 1262 | |
87b4b663 | 1263 | release_region(data->addr, IT87_EC_EXTENT); |
b74f3fdd | 1264 | platform_set_drvdata(pdev, NULL); |
943b0830 | 1265 | kfree(data); |
1da177e4 LT |
1266 | |
1267 | return 0; | |
1268 | } | |
1269 | ||
7f999aa7 | 1270 | /* Must be called with data->update_lock held, except during initialization. |
1da177e4 LT |
1271 | We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks, |
1272 | would slow down the IT87 access and should not be necessary. */ | |
b74f3fdd | 1273 | static int it87_read_value(struct it87_data *data, u8 reg) |
1da177e4 | 1274 | { |
b74f3fdd | 1275 | outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET); |
1276 | return inb_p(data->addr + IT87_DATA_REG_OFFSET); | |
1da177e4 LT |
1277 | } |
1278 | ||
7f999aa7 | 1279 | /* Must be called with data->update_lock held, except during initialization. |
1da177e4 LT |
1280 | We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks, |
1281 | would slow down the IT87 access and should not be necessary. */ | |
b74f3fdd | 1282 | static void it87_write_value(struct it87_data *data, u8 reg, u8 value) |
1da177e4 | 1283 | { |
b74f3fdd | 1284 | outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET); |
1285 | outb_p(value, data->addr + IT87_DATA_REG_OFFSET); | |
1da177e4 LT |
1286 | } |
1287 | ||
1288 | /* Return 1 if and only if the PWM interface is safe to use */ | |
b74f3fdd | 1289 | static int __devinit it87_check_pwm(struct device *dev) |
1da177e4 | 1290 | { |
b74f3fdd | 1291 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
1292 | /* Some BIOSes fail to correctly configure the IT87 fans. All fans off |
1293 | * and polarity set to active low is sign that this is the case so we | |
1294 | * disable pwm control to protect the user. */ | |
b74f3fdd | 1295 | int tmp = it87_read_value(data, IT87_REG_FAN_CTL); |
1da177e4 LT |
1296 | if ((tmp & 0x87) == 0) { |
1297 | if (fix_pwm_polarity) { | |
1298 | /* The user asks us to attempt a chip reconfiguration. | |
1299 | * This means switching to active high polarity and | |
1300 | * inverting all fan speed values. */ | |
1301 | int i; | |
1302 | u8 pwm[3]; | |
1303 | ||
1304 | for (i = 0; i < 3; i++) | |
b74f3fdd | 1305 | pwm[i] = it87_read_value(data, |
1da177e4 LT |
1306 | IT87_REG_PWM(i)); |
1307 | ||
1308 | /* If any fan is in automatic pwm mode, the polarity | |
1309 | * might be correct, as suspicious as it seems, so we | |
1310 | * better don't change anything (but still disable the | |
1311 | * PWM interface). */ | |
1312 | if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) { | |
b74f3fdd | 1313 | dev_info(dev, "Reconfiguring PWM to " |
1da177e4 | 1314 | "active high polarity\n"); |
b74f3fdd | 1315 | it87_write_value(data, IT87_REG_FAN_CTL, |
1da177e4 LT |
1316 | tmp | 0x87); |
1317 | for (i = 0; i < 3; i++) | |
b74f3fdd | 1318 | it87_write_value(data, |
1da177e4 LT |
1319 | IT87_REG_PWM(i), |
1320 | 0x7f & ~pwm[i]); | |
1321 | return 1; | |
1322 | } | |
1323 | ||
b74f3fdd | 1324 | dev_info(dev, "PWM configuration is " |
1da177e4 LT |
1325 | "too broken to be fixed\n"); |
1326 | } | |
1327 | ||
b74f3fdd | 1328 | dev_info(dev, "Detected broken BIOS " |
1da177e4 LT |
1329 | "defaults, disabling PWM interface\n"); |
1330 | return 0; | |
1331 | } else if (fix_pwm_polarity) { | |
b74f3fdd | 1332 | dev_info(dev, "PWM configuration looks " |
1da177e4 LT |
1333 | "sane, won't touch\n"); |
1334 | } | |
1335 | ||
1336 | return 1; | |
1337 | } | |
1338 | ||
1339 | /* Called when we have found a new IT87. */ | |
b74f3fdd | 1340 | static void __devinit it87_init_device(struct platform_device *pdev) |
1da177e4 | 1341 | { |
b74f3fdd | 1342 | struct it87_data *data = platform_get_drvdata(pdev); |
1da177e4 LT |
1343 | int tmp, i; |
1344 | ||
1345 | /* initialize to sane defaults: | |
1346 | * - if the chip is in manual pwm mode, this will be overwritten with | |
1347 | * the actual settings on the chip (so in this case, initialization | |
1348 | * is not needed) | |
1349 | * - if in automatic or on/off mode, we could switch to manual mode, | |
1350 | * read the registers and set manual_pwm_ctl accordingly, but currently | |
1351 | * this is not implemented, so we initialize to something sane */ | |
1352 | for (i = 0; i < 3; i++) { | |
1353 | data->manual_pwm_ctl[i] = 0xff; | |
1354 | } | |
1355 | ||
c5df9b7a JD |
1356 | /* Some chips seem to have default value 0xff for all limit |
1357 | * registers. For low voltage limits it makes no sense and triggers | |
1358 | * alarms, so change to 0 instead. For high temperature limits, it | |
1359 | * means -1 degree C, which surprisingly doesn't trigger an alarm, | |
1360 | * but is still confusing, so change to 127 degrees C. */ | |
1361 | for (i = 0; i < 8; i++) { | |
b74f3fdd | 1362 | tmp = it87_read_value(data, IT87_REG_VIN_MIN(i)); |
c5df9b7a | 1363 | if (tmp == 0xff) |
b74f3fdd | 1364 | it87_write_value(data, IT87_REG_VIN_MIN(i), 0); |
c5df9b7a JD |
1365 | } |
1366 | for (i = 0; i < 3; i++) { | |
b74f3fdd | 1367 | tmp = it87_read_value(data, IT87_REG_TEMP_HIGH(i)); |
c5df9b7a | 1368 | if (tmp == 0xff) |
b74f3fdd | 1369 | it87_write_value(data, IT87_REG_TEMP_HIGH(i), 127); |
c5df9b7a JD |
1370 | } |
1371 | ||
1da177e4 | 1372 | /* Check if temperature channnels are reset manually or by some reason */ |
b74f3fdd | 1373 | tmp = it87_read_value(data, IT87_REG_TEMP_ENABLE); |
1da177e4 LT |
1374 | if ((tmp & 0x3f) == 0) { |
1375 | /* Temp1,Temp3=thermistor; Temp2=thermal diode */ | |
1376 | tmp = (tmp & 0xc0) | 0x2a; | |
b74f3fdd | 1377 | it87_write_value(data, IT87_REG_TEMP_ENABLE, tmp); |
1da177e4 LT |
1378 | } |
1379 | data->sensor = tmp; | |
1380 | ||
1381 | /* Check if voltage monitors are reset manually or by some reason */ | |
b74f3fdd | 1382 | tmp = it87_read_value(data, IT87_REG_VIN_ENABLE); |
1da177e4 LT |
1383 | if ((tmp & 0xff) == 0) { |
1384 | /* Enable all voltage monitors */ | |
b74f3fdd | 1385 | it87_write_value(data, IT87_REG_VIN_ENABLE, 0xff); |
1da177e4 LT |
1386 | } |
1387 | ||
1388 | /* Check if tachometers are reset manually or by some reason */ | |
b74f3fdd | 1389 | data->fan_main_ctrl = it87_read_value(data, IT87_REG_FAN_MAIN_CTRL); |
1da177e4 LT |
1390 | if ((data->fan_main_ctrl & 0x70) == 0) { |
1391 | /* Enable all fan tachometers */ | |
1392 | data->fan_main_ctrl |= 0x70; | |
b74f3fdd | 1393 | it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl); |
1da177e4 | 1394 | } |
9060f8bd | 1395 | data->has_fan = (data->fan_main_ctrl >> 4) & 0x07; |
1da177e4 | 1396 | |
17d648bf | 1397 | /* Set tachometers to 16-bit mode if needed */ |
0475169c | 1398 | if (has_16bit_fans(data)) { |
b74f3fdd | 1399 | tmp = it87_read_value(data, IT87_REG_FAN_16BIT); |
9060f8bd | 1400 | if (~tmp & 0x07 & data->has_fan) { |
b74f3fdd | 1401 | dev_dbg(&pdev->dev, |
17d648bf | 1402 | "Setting fan1-3 to 16-bit mode\n"); |
b74f3fdd | 1403 | it87_write_value(data, IT87_REG_FAN_16BIT, |
17d648bf JD |
1404 | tmp | 0x07); |
1405 | } | |
816d8c6a AP |
1406 | /* IT8705F only supports three fans. */ |
1407 | if (data->type != it87) { | |
1408 | if (tmp & (1 << 4)) | |
1409 | data->has_fan |= (1 << 3); /* fan4 enabled */ | |
1410 | if (tmp & (1 << 5)) | |
1411 | data->has_fan |= (1 << 4); /* fan5 enabled */ | |
1412 | } | |
17d648bf JD |
1413 | } |
1414 | ||
1da177e4 LT |
1415 | /* Set current fan mode registers and the default settings for the |
1416 | * other mode registers */ | |
1417 | for (i = 0; i < 3; i++) { | |
1418 | if (data->fan_main_ctrl & (1 << i)) { | |
1419 | /* pwm mode */ | |
b74f3fdd | 1420 | tmp = it87_read_value(data, IT87_REG_PWM(i)); |
1da177e4 LT |
1421 | if (tmp & 0x80) { |
1422 | /* automatic pwm - not yet implemented, but | |
1423 | * leave the settings made by the BIOS alone | |
1424 | * until a change is requested via the sysfs | |
1425 | * interface */ | |
1426 | } else { | |
1427 | /* manual pwm */ | |
1428 | data->manual_pwm_ctl[i] = PWM_FROM_REG(tmp); | |
1429 | } | |
1430 | } | |
1431 | } | |
1432 | ||
1433 | /* Start monitoring */ | |
b74f3fdd | 1434 | it87_write_value(data, IT87_REG_CONFIG, |
1435 | (it87_read_value(data, IT87_REG_CONFIG) & 0x36) | |
1da177e4 LT |
1436 | | (update_vbat ? 0x41 : 0x01)); |
1437 | } | |
1438 | ||
1439 | static struct it87_data *it87_update_device(struct device *dev) | |
1440 | { | |
b74f3fdd | 1441 | struct it87_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
1442 | int i; |
1443 | ||
9a61bf63 | 1444 | mutex_lock(&data->update_lock); |
1da177e4 LT |
1445 | |
1446 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) | |
1447 | || !data->valid) { | |
1448 | ||
1449 | if (update_vbat) { | |
1450 | /* Cleared after each update, so reenable. Value | |
1451 | returned by this read will be previous value */ | |
b74f3fdd | 1452 | it87_write_value(data, IT87_REG_CONFIG, |
1453 | it87_read_value(data, IT87_REG_CONFIG) | 0x40); | |
1da177e4 LT |
1454 | } |
1455 | for (i = 0; i <= 7; i++) { | |
1456 | data->in[i] = | |
b74f3fdd | 1457 | it87_read_value(data, IT87_REG_VIN(i)); |
1da177e4 | 1458 | data->in_min[i] = |
b74f3fdd | 1459 | it87_read_value(data, IT87_REG_VIN_MIN(i)); |
1da177e4 | 1460 | data->in_max[i] = |
b74f3fdd | 1461 | it87_read_value(data, IT87_REG_VIN_MAX(i)); |
1da177e4 | 1462 | } |
3543a53f | 1463 | /* in8 (battery) has no limit registers */ |
1da177e4 | 1464 | data->in[8] = |
b74f3fdd | 1465 | it87_read_value(data, IT87_REG_VIN(8)); |
1da177e4 | 1466 | |
c7f1f716 | 1467 | for (i = 0; i < 5; i++) { |
9060f8bd JD |
1468 | /* Skip disabled fans */ |
1469 | if (!(data->has_fan & (1 << i))) | |
1470 | continue; | |
1471 | ||
1da177e4 | 1472 | data->fan_min[i] = |
c7f1f716 | 1473 | it87_read_value(data, IT87_REG_FAN_MIN[i]); |
b74f3fdd | 1474 | data->fan[i] = it87_read_value(data, |
c7f1f716 | 1475 | IT87_REG_FAN[i]); |
17d648bf | 1476 | /* Add high byte if in 16-bit mode */ |
0475169c | 1477 | if (has_16bit_fans(data)) { |
b74f3fdd | 1478 | data->fan[i] |= it87_read_value(data, |
c7f1f716 | 1479 | IT87_REG_FANX[i]) << 8; |
b74f3fdd | 1480 | data->fan_min[i] |= it87_read_value(data, |
c7f1f716 | 1481 | IT87_REG_FANX_MIN[i]) << 8; |
17d648bf | 1482 | } |
1da177e4 LT |
1483 | } |
1484 | for (i = 0; i < 3; i++) { | |
1485 | data->temp[i] = | |
b74f3fdd | 1486 | it87_read_value(data, IT87_REG_TEMP(i)); |
1da177e4 | 1487 | data->temp_high[i] = |
b74f3fdd | 1488 | it87_read_value(data, IT87_REG_TEMP_HIGH(i)); |
1da177e4 | 1489 | data->temp_low[i] = |
b74f3fdd | 1490 | it87_read_value(data, IT87_REG_TEMP_LOW(i)); |
1da177e4 LT |
1491 | } |
1492 | ||
17d648bf | 1493 | /* Newer chips don't have clock dividers */ |
0475169c | 1494 | if ((data->has_fan & 0x07) && !has_16bit_fans(data)) { |
b74f3fdd | 1495 | i = it87_read_value(data, IT87_REG_FAN_DIV); |
17d648bf JD |
1496 | data->fan_div[0] = i & 0x07; |
1497 | data->fan_div[1] = (i >> 3) & 0x07; | |
1498 | data->fan_div[2] = (i & 0x40) ? 3 : 1; | |
1499 | } | |
1da177e4 LT |
1500 | |
1501 | data->alarms = | |
b74f3fdd | 1502 | it87_read_value(data, IT87_REG_ALARM1) | |
1503 | (it87_read_value(data, IT87_REG_ALARM2) << 8) | | |
1504 | (it87_read_value(data, IT87_REG_ALARM3) << 16); | |
1505 | data->fan_main_ctrl = it87_read_value(data, | |
1506 | IT87_REG_FAN_MAIN_CTRL); | |
1507 | data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL); | |
1508 | ||
1509 | data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE); | |
0475169c AP |
1510 | /* The 8705 does not have VID capability. |
1511 | The 8718 does not use IT87_REG_VID for the same purpose. */ | |
17d648bf | 1512 | if (data->type == it8712 || data->type == it8716) { |
b74f3fdd | 1513 | data->vid = it87_read_value(data, IT87_REG_VID); |
17d648bf JD |
1514 | /* The older IT8712F revisions had only 5 VID pins, |
1515 | but we assume it is always safe to read 6 bits. */ | |
1516 | data->vid &= 0x3f; | |
1da177e4 LT |
1517 | } |
1518 | data->last_updated = jiffies; | |
1519 | data->valid = 1; | |
1520 | } | |
1521 | ||
9a61bf63 | 1522 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
1523 | |
1524 | return data; | |
1525 | } | |
1526 | ||
b74f3fdd | 1527 | static int __init it87_device_add(unsigned short address, |
1528 | const struct it87_sio_data *sio_data) | |
1529 | { | |
1530 | struct resource res = { | |
87b4b663 BH |
1531 | .start = address + IT87_EC_OFFSET, |
1532 | .end = address + IT87_EC_OFFSET + IT87_EC_EXTENT - 1, | |
b74f3fdd | 1533 | .name = DRVNAME, |
1534 | .flags = IORESOURCE_IO, | |
1535 | }; | |
1536 | int err; | |
1537 | ||
1538 | pdev = platform_device_alloc(DRVNAME, address); | |
1539 | if (!pdev) { | |
1540 | err = -ENOMEM; | |
1541 | printk(KERN_ERR DRVNAME ": Device allocation failed\n"); | |
1542 | goto exit; | |
1543 | } | |
1544 | ||
1545 | err = platform_device_add_resources(pdev, &res, 1); | |
1546 | if (err) { | |
1547 | printk(KERN_ERR DRVNAME ": Device resource addition failed " | |
1548 | "(%d)\n", err); | |
1549 | goto exit_device_put; | |
1550 | } | |
1551 | ||
1552 | err = platform_device_add_data(pdev, sio_data, | |
1553 | sizeof(struct it87_sio_data)); | |
1554 | if (err) { | |
1555 | printk(KERN_ERR DRVNAME ": Platform data allocation failed\n"); | |
1556 | goto exit_device_put; | |
1557 | } | |
1558 | ||
1559 | err = platform_device_add(pdev); | |
1560 | if (err) { | |
1561 | printk(KERN_ERR DRVNAME ": Device addition failed (%d)\n", | |
1562 | err); | |
1563 | goto exit_device_put; | |
1564 | } | |
1565 | ||
1566 | return 0; | |
1567 | ||
1568 | exit_device_put: | |
1569 | platform_device_put(pdev); | |
1570 | exit: | |
1571 | return err; | |
1572 | } | |
1573 | ||
1da177e4 LT |
1574 | static int __init sm_it87_init(void) |
1575 | { | |
b74f3fdd | 1576 | int err; |
1577 | unsigned short isa_address=0; | |
1578 | struct it87_sio_data sio_data; | |
1579 | ||
98dd22c3 | 1580 | memset(&sio_data, 0, sizeof(struct it87_sio_data)); |
b74f3fdd | 1581 | err = it87_find(&isa_address, &sio_data); |
1582 | if (err) | |
1583 | return err; | |
1584 | err = platform_driver_register(&it87_driver); | |
1585 | if (err) | |
1586 | return err; | |
fde09509 | 1587 | |
b74f3fdd | 1588 | err = it87_device_add(isa_address, &sio_data); |
1589 | if (err){ | |
1590 | platform_driver_unregister(&it87_driver); | |
1591 | return err; | |
1592 | } | |
1593 | ||
1594 | return 0; | |
1da177e4 LT |
1595 | } |
1596 | ||
1597 | static void __exit sm_it87_exit(void) | |
1598 | { | |
b74f3fdd | 1599 | platform_device_unregister(pdev); |
1600 | platform_driver_unregister(&it87_driver); | |
1da177e4 LT |
1601 | } |
1602 | ||
1603 | ||
f1d8e332 | 1604 | MODULE_AUTHOR("Chris Gauthron, " |
b19367c6 | 1605 | "Jean Delvare <khali@linux-fr.org>"); |
08a8f6e9 | 1606 | MODULE_DESCRIPTION("IT8705F/8712F/8716F/8718F/8726F, SiS950 driver"); |
1da177e4 LT |
1607 | module_param(update_vbat, bool, 0); |
1608 | MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value"); | |
1609 | module_param(fix_pwm_polarity, bool, 0); | |
1610 | MODULE_PARM_DESC(fix_pwm_polarity, "Force PWM polarity to active high (DANGEROUS)"); | |
1611 | MODULE_LICENSE("GPL"); | |
1612 | ||
1613 | module_init(sm_it87_init); | |
1614 | module_exit(sm_it87_exit); |