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1de9e371 | 1 | /* |
61ba0318 GR |
2 | * vt8231.c - Part of lm_sensors, Linux kernel modules |
3 | * for hardware monitoring | |
4 | * | |
5 | * Copyright (c) 2005 Roger Lucas <vt8231@hiddenengine.co.uk> | |
6 | * Copyright (c) 2002 Mark D. Studebaker <mdsxyz123@yahoo.com> | |
7 | * Aaron M. Marsh <amarsh@sdf.lonestar.org> | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
22 | */ | |
1de9e371 | 23 | |
61ba0318 GR |
24 | /* |
25 | * Supports VIA VT8231 South Bridge embedded sensors | |
26 | */ | |
1de9e371 | 27 | |
9d72be0d JP |
28 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
29 | ||
1de9e371 RL |
30 | #include <linux/module.h> |
31 | #include <linux/init.h> | |
32 | #include <linux/slab.h> | |
33 | #include <linux/pci.h> | |
34 | #include <linux/jiffies.h> | |
ec5e1a4b | 35 | #include <linux/platform_device.h> |
1de9e371 RL |
36 | #include <linux/hwmon.h> |
37 | #include <linux/hwmon-sysfs.h> | |
38 | #include <linux/hwmon-vid.h> | |
39 | #include <linux/err.h> | |
9a61bf63 | 40 | #include <linux/mutex.h> |
b9acb64a | 41 | #include <linux/acpi.h> |
6055fae8 | 42 | #include <linux/io.h> |
1de9e371 RL |
43 | |
44 | static int force_addr; | |
45 | module_param(force_addr, int, 0); | |
46 | MODULE_PARM_DESC(force_addr, "Initialize the base address of the sensors"); | |
47 | ||
ec5e1a4b | 48 | static struct platform_device *pdev; |
1de9e371 RL |
49 | |
50 | #define VT8231_EXTENT 0x80 | |
51 | #define VT8231_BASE_REG 0x70 | |
52 | #define VT8231_ENABLE_REG 0x74 | |
53 | ||
61ba0318 GR |
54 | /* |
55 | * The VT8231 registers | |
56 | * | |
57 | * The reset value for the input channel configuration is used (Reg 0x4A=0x07) | |
58 | * which sets the selected inputs marked with '*' below if multiple options are | |
59 | * possible: | |
60 | * | |
61 | * Voltage Mode Temperature Mode | |
62 | * Sensor Linux Id Linux Id VIA Id | |
63 | * -------- -------- -------- ------ | |
64 | * CPU Diode N/A temp1 0 | |
65 | * UIC1 in0 temp2 * 1 | |
66 | * UIC2 in1 * temp3 2 | |
67 | * UIC3 in2 * temp4 3 | |
68 | * UIC4 in3 * temp5 4 | |
69 | * UIC5 in4 * temp6 5 | |
70 | * 3.3V in5 N/A | |
71 | * | |
72 | * Note that the BIOS may set the configuration register to a different value | |
73 | * to match the motherboard configuration. | |
74 | */ | |
1de9e371 RL |
75 | |
76 | /* fans numbered 0-1 */ | |
77 | #define VT8231_REG_FAN_MIN(nr) (0x3b + (nr)) | |
78 | #define VT8231_REG_FAN(nr) (0x29 + (nr)) | |
79 | ||
80 | /* Voltage inputs numbered 0-5 */ | |
81 | ||
82 | static const u8 regvolt[] = { 0x21, 0x22, 0x23, 0x24, 0x25, 0x26 }; | |
83 | static const u8 regvoltmax[] = { 0x3d, 0x2b, 0x2d, 0x2f, 0x31, 0x33 }; | |
84 | static const u8 regvoltmin[] = { 0x3e, 0x2c, 0x2e, 0x30, 0x32, 0x34 }; | |
85 | ||
61ba0318 GR |
86 | /* |
87 | * Temperatures are numbered 1-6 according to the Linux kernel specification. | |
88 | * | |
89 | * In the VIA datasheet, however, the temperatures are numbered from zero. | |
90 | * Since it is important that this driver can easily be compared to the VIA | |
91 | * datasheet, we will use the VIA numbering within this driver and map the | |
92 | * kernel sysfs device name to the VIA number in the sysfs callback. | |
93 | */ | |
1de9e371 RL |
94 | |
95 | #define VT8231_REG_TEMP_LOW01 0x49 | |
96 | #define VT8231_REG_TEMP_LOW25 0x4d | |
97 | ||
98 | static const u8 regtemp[] = { 0x1f, 0x21, 0x22, 0x23, 0x24, 0x25 }; | |
99 | static const u8 regtempmax[] = { 0x39, 0x3d, 0x2b, 0x2d, 0x2f, 0x31 }; | |
100 | static const u8 regtempmin[] = { 0x3a, 0x3e, 0x2c, 0x2e, 0x30, 0x32 }; | |
101 | ||
102 | #define TEMP_FROM_REG(reg) (((253 * 4 - (reg)) * 550 + 105) / 210) | |
103 | #define TEMP_MAXMIN_FROM_REG(reg) (((253 - (reg)) * 2200 + 105) / 210) | |
104 | #define TEMP_MAXMIN_TO_REG(val) (253 - ((val) * 210 + 1100) / 2200) | |
105 | ||
106 | #define VT8231_REG_CONFIG 0x40 | |
107 | #define VT8231_REG_ALARM1 0x41 | |
108 | #define VT8231_REG_ALARM2 0x42 | |
109 | #define VT8231_REG_FANDIV 0x47 | |
110 | #define VT8231_REG_UCH_CONFIG 0x4a | |
111 | #define VT8231_REG_TEMP1_CONFIG 0x4b | |
112 | #define VT8231_REG_TEMP2_CONFIG 0x4c | |
113 | ||
61ba0318 GR |
114 | /* |
115 | * temps 0-5 as numbered in VIA datasheet - see later for mapping to Linux | |
116 | * numbering | |
117 | */ | |
1de9e371 RL |
118 | #define ISTEMP(i, ch_config) ((i) == 0 ? 1 : \ |
119 | ((ch_config) >> ((i)+1)) & 0x01) | |
120 | /* voltages 0-5 */ | |
121 | #define ISVOLT(i, ch_config) ((i) == 5 ? 1 : \ | |
122 | !(((ch_config) >> ((i)+2)) & 0x01)) | |
123 | ||
124 | #define DIV_FROM_REG(val) (1 << (val)) | |
125 | ||
61ba0318 GR |
126 | /* |
127 | * NB The values returned here are NOT temperatures. The calibration curves | |
128 | * for the thermistor curves are board-specific and must go in the | |
129 | * sensors.conf file. Temperature sensors are actually ten bits, but the | |
130 | * VIA datasheet only considers the 8 MSBs obtained from the regtemp[] | |
131 | * register. The temperature value returned should have a magnitude of 3, | |
132 | * so we use the VIA scaling as the "true" scaling and use the remaining 2 | |
133 | * LSBs as fractional precision. | |
134 | * | |
135 | * All the on-chip hardware temperature comparisons for the alarms are only | |
136 | * 8-bits wide, and compare against the 8 MSBs of the temperature. The bits | |
137 | * in the registers VT8231_REG_TEMP_LOW01 and VT8231_REG_TEMP_LOW25 are | |
138 | * ignored. | |
139 | */ | |
140 | ||
141 | /* | |
142 | ****** FAN RPM CONVERSIONS ******** | |
143 | * This chip saturates back at 0, not at 255 like many the other chips. | |
144 | * So, 0 means 0 RPM | |
145 | */ | |
1de9e371 RL |
146 | static inline u8 FAN_TO_REG(long rpm, int div) |
147 | { | |
148 | if (rpm == 0) | |
149 | return 0; | |
2a844c14 | 150 | return clamp_val(1310720 / (rpm * div), 1, 255); |
1de9e371 RL |
151 | } |
152 | ||
153 | #define FAN_FROM_REG(val, div) ((val) == 0 ? 0 : 1310720 / ((val) * (div))) | |
154 | ||
155 | struct vt8231_data { | |
ec5e1a4b RL |
156 | unsigned short addr; |
157 | const char *name; | |
158 | ||
9a61bf63 | 159 | struct mutex update_lock; |
1beeffe4 | 160 | struct device *hwmon_dev; |
1de9e371 RL |
161 | char valid; /* !=0 if following fields are valid */ |
162 | unsigned long last_updated; /* In jiffies */ | |
163 | ||
164 | u8 in[6]; /* Register value */ | |
165 | u8 in_max[6]; /* Register value */ | |
166 | u8 in_min[6]; /* Register value */ | |
167 | u16 temp[6]; /* Register value 10 bit, right aligned */ | |
168 | u8 temp_max[6]; /* Register value */ | |
169 | u8 temp_min[6]; /* Register value */ | |
170 | u8 fan[2]; /* Register value */ | |
171 | u8 fan_min[2]; /* Register value */ | |
172 | u8 fan_div[2]; /* Register encoding, shifted right */ | |
173 | u16 alarms; /* Register encoding */ | |
174 | u8 uch_config; | |
175 | }; | |
176 | ||
177 | static struct pci_dev *s_bridge; | |
ec5e1a4b | 178 | static int vt8231_probe(struct platform_device *pdev); |
281dfd0b | 179 | static int vt8231_remove(struct platform_device *pdev); |
1de9e371 | 180 | static struct vt8231_data *vt8231_update_device(struct device *dev); |
ec5e1a4b | 181 | static void vt8231_init_device(struct vt8231_data *data); |
1de9e371 | 182 | |
ec5e1a4b | 183 | static inline int vt8231_read_value(struct vt8231_data *data, u8 reg) |
1de9e371 | 184 | { |
ec5e1a4b | 185 | return inb_p(data->addr + reg); |
1de9e371 RL |
186 | } |
187 | ||
ec5e1a4b | 188 | static inline void vt8231_write_value(struct vt8231_data *data, u8 reg, |
1de9e371 RL |
189 | u8 value) |
190 | { | |
ec5e1a4b | 191 | outb_p(value, data->addr + reg); |
1de9e371 RL |
192 | } |
193 | ||
194 | /* following are the sysfs callback functions */ | |
195 | static ssize_t show_in(struct device *dev, struct device_attribute *attr, | |
196 | char *buf) | |
197 | { | |
198 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
199 | int nr = sensor_attr->index; | |
200 | struct vt8231_data *data = vt8231_update_device(dev); | |
201 | ||
202 | return sprintf(buf, "%d\n", ((data->in[nr] - 3) * 10000) / 958); | |
203 | } | |
204 | ||
205 | static ssize_t show_in_min(struct device *dev, struct device_attribute *attr, | |
206 | char *buf) | |
207 | { | |
208 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
209 | int nr = sensor_attr->index; | |
210 | struct vt8231_data *data = vt8231_update_device(dev); | |
211 | ||
212 | return sprintf(buf, "%d\n", ((data->in_min[nr] - 3) * 10000) / 958); | |
213 | } | |
214 | ||
215 | static ssize_t show_in_max(struct device *dev, struct device_attribute *attr, | |
216 | char *buf) | |
217 | { | |
218 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
219 | int nr = sensor_attr->index; | |
220 | struct vt8231_data *data = vt8231_update_device(dev); | |
221 | ||
222 | return sprintf(buf, "%d\n", (((data->in_max[nr] - 3) * 10000) / 958)); | |
223 | } | |
224 | ||
225 | static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, | |
226 | const char *buf, size_t count) | |
227 | { | |
228 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
229 | int nr = sensor_attr->index; | |
ec5e1a4b | 230 | struct vt8231_data *data = dev_get_drvdata(dev); |
65fe5c79 GR |
231 | unsigned long val; |
232 | int err; | |
233 | ||
234 | err = kstrtoul(buf, 10, &val); | |
235 | if (err) | |
236 | return err; | |
1de9e371 | 237 | |
9a61bf63 | 238 | mutex_lock(&data->update_lock); |
2a844c14 | 239 | data->in_min[nr] = clamp_val(((val * 958) / 10000) + 3, 0, 255); |
ec5e1a4b | 240 | vt8231_write_value(data, regvoltmin[nr], data->in_min[nr]); |
9a61bf63 | 241 | mutex_unlock(&data->update_lock); |
1de9e371 RL |
242 | return count; |
243 | } | |
244 | ||
245 | static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, | |
246 | const char *buf, size_t count) | |
247 | { | |
248 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
249 | int nr = sensor_attr->index; | |
ec5e1a4b | 250 | struct vt8231_data *data = dev_get_drvdata(dev); |
65fe5c79 GR |
251 | unsigned long val; |
252 | int err; | |
253 | ||
254 | err = kstrtoul(buf, 10, &val); | |
255 | if (err) | |
256 | return err; | |
1de9e371 | 257 | |
9a61bf63 | 258 | mutex_lock(&data->update_lock); |
2a844c14 | 259 | data->in_max[nr] = clamp_val(((val * 958) / 10000) + 3, 0, 255); |
ec5e1a4b | 260 | vt8231_write_value(data, regvoltmax[nr], data->in_max[nr]); |
9a61bf63 | 261 | mutex_unlock(&data->update_lock); |
1de9e371 RL |
262 | return count; |
263 | } | |
264 | ||
265 | /* Special case for input 5 as this has 3.3V scaling built into the chip */ | |
266 | static ssize_t show_in5(struct device *dev, struct device_attribute *attr, | |
267 | char *buf) | |
268 | { | |
269 | struct vt8231_data *data = vt8231_update_device(dev); | |
270 | ||
271 | return sprintf(buf, "%d\n", | |
272 | (((data->in[5] - 3) * 10000 * 54) / (958 * 34))); | |
273 | } | |
274 | ||
275 | static ssize_t show_in5_min(struct device *dev, struct device_attribute *attr, | |
276 | char *buf) | |
277 | { | |
278 | struct vt8231_data *data = vt8231_update_device(dev); | |
279 | ||
280 | return sprintf(buf, "%d\n", | |
281 | (((data->in_min[5] - 3) * 10000 * 54) / (958 * 34))); | |
282 | } | |
283 | ||
284 | static ssize_t show_in5_max(struct device *dev, struct device_attribute *attr, | |
285 | char *buf) | |
286 | { | |
287 | struct vt8231_data *data = vt8231_update_device(dev); | |
288 | ||
289 | return sprintf(buf, "%d\n", | |
290 | (((data->in_max[5] - 3) * 10000 * 54) / (958 * 34))); | |
291 | } | |
292 | ||
293 | static ssize_t set_in5_min(struct device *dev, struct device_attribute *attr, | |
294 | const char *buf, size_t count) | |
295 | { | |
ec5e1a4b | 296 | struct vt8231_data *data = dev_get_drvdata(dev); |
65fe5c79 GR |
297 | unsigned long val; |
298 | int err; | |
299 | ||
300 | err = kstrtoul(buf, 10, &val); | |
301 | if (err) | |
302 | return err; | |
1de9e371 | 303 | |
9a61bf63 | 304 | mutex_lock(&data->update_lock); |
2a844c14 GR |
305 | data->in_min[5] = clamp_val(((val * 958 * 34) / (10000 * 54)) + 3, |
306 | 0, 255); | |
ec5e1a4b | 307 | vt8231_write_value(data, regvoltmin[5], data->in_min[5]); |
9a61bf63 | 308 | mutex_unlock(&data->update_lock); |
1de9e371 RL |
309 | return count; |
310 | } | |
311 | ||
312 | static ssize_t set_in5_max(struct device *dev, struct device_attribute *attr, | |
313 | const char *buf, size_t count) | |
314 | { | |
ec5e1a4b | 315 | struct vt8231_data *data = dev_get_drvdata(dev); |
65fe5c79 GR |
316 | unsigned long val; |
317 | int err; | |
318 | ||
319 | err = kstrtoul(buf, 10, &val); | |
320 | if (err) | |
321 | return err; | |
1de9e371 | 322 | |
9a61bf63 | 323 | mutex_lock(&data->update_lock); |
2a844c14 GR |
324 | data->in_max[5] = clamp_val(((val * 958 * 34) / (10000 * 54)) + 3, |
325 | 0, 255); | |
ec5e1a4b | 326 | vt8231_write_value(data, regvoltmax[5], data->in_max[5]); |
9a61bf63 | 327 | mutex_unlock(&data->update_lock); |
1de9e371 RL |
328 | return count; |
329 | } | |
330 | ||
331 | #define define_voltage_sysfs(offset) \ | |
332 | static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ | |
333 | show_in, NULL, offset); \ | |
334 | static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ | |
335 | show_in_min, set_in_min, offset); \ | |
336 | static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ | |
337 | show_in_max, set_in_max, offset) | |
338 | ||
339 | define_voltage_sysfs(0); | |
340 | define_voltage_sysfs(1); | |
341 | define_voltage_sysfs(2); | |
342 | define_voltage_sysfs(3); | |
343 | define_voltage_sysfs(4); | |
344 | ||
345 | static DEVICE_ATTR(in5_input, S_IRUGO, show_in5, NULL); | |
346 | static DEVICE_ATTR(in5_min, S_IRUGO | S_IWUSR, show_in5_min, set_in5_min); | |
347 | static DEVICE_ATTR(in5_max, S_IRUGO | S_IWUSR, show_in5_max, set_in5_max); | |
348 | ||
349 | /* Temperatures */ | |
350 | static ssize_t show_temp0(struct device *dev, struct device_attribute *attr, | |
351 | char *buf) | |
352 | { | |
353 | struct vt8231_data *data = vt8231_update_device(dev); | |
354 | return sprintf(buf, "%d\n", data->temp[0] * 250); | |
355 | } | |
356 | ||
357 | static ssize_t show_temp0_max(struct device *dev, struct device_attribute *attr, | |
358 | char *buf) | |
359 | { | |
360 | struct vt8231_data *data = vt8231_update_device(dev); | |
361 | return sprintf(buf, "%d\n", data->temp_max[0] * 1000); | |
362 | } | |
363 | ||
364 | static ssize_t show_temp0_min(struct device *dev, struct device_attribute *attr, | |
365 | char *buf) | |
366 | { | |
367 | struct vt8231_data *data = vt8231_update_device(dev); | |
368 | return sprintf(buf, "%d\n", data->temp_min[0] * 1000); | |
369 | } | |
370 | ||
371 | static ssize_t set_temp0_max(struct device *dev, struct device_attribute *attr, | |
372 | const char *buf, size_t count) | |
373 | { | |
ec5e1a4b | 374 | struct vt8231_data *data = dev_get_drvdata(dev); |
65fe5c79 GR |
375 | long val; |
376 | int err; | |
377 | ||
378 | err = kstrtol(buf, 10, &val); | |
379 | if (err) | |
380 | return err; | |
1de9e371 | 381 | |
9a61bf63 | 382 | mutex_lock(&data->update_lock); |
2a844c14 | 383 | data->temp_max[0] = clamp_val((val + 500) / 1000, 0, 255); |
ec5e1a4b | 384 | vt8231_write_value(data, regtempmax[0], data->temp_max[0]); |
9a61bf63 | 385 | mutex_unlock(&data->update_lock); |
1de9e371 RL |
386 | return count; |
387 | } | |
388 | static ssize_t set_temp0_min(struct device *dev, struct device_attribute *attr, | |
389 | const char *buf, size_t count) | |
390 | { | |
ec5e1a4b | 391 | struct vt8231_data *data = dev_get_drvdata(dev); |
65fe5c79 GR |
392 | long val; |
393 | int err; | |
394 | ||
395 | err = kstrtol(buf, 10, &val); | |
396 | if (err) | |
397 | return err; | |
1de9e371 | 398 | |
9a61bf63 | 399 | mutex_lock(&data->update_lock); |
2a844c14 | 400 | data->temp_min[0] = clamp_val((val + 500) / 1000, 0, 255); |
ec5e1a4b | 401 | vt8231_write_value(data, regtempmin[0], data->temp_min[0]); |
9a61bf63 | 402 | mutex_unlock(&data->update_lock); |
1de9e371 RL |
403 | return count; |
404 | } | |
405 | ||
406 | static ssize_t show_temp(struct device *dev, struct device_attribute *attr, | |
407 | char *buf) | |
408 | { | |
409 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
410 | int nr = sensor_attr->index; | |
411 | struct vt8231_data *data = vt8231_update_device(dev); | |
412 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr])); | |
413 | } | |
414 | ||
415 | static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr, | |
416 | char *buf) | |
417 | { | |
418 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
419 | int nr = sensor_attr->index; | |
420 | struct vt8231_data *data = vt8231_update_device(dev); | |
421 | return sprintf(buf, "%d\n", TEMP_MAXMIN_FROM_REG(data->temp_max[nr])); | |
422 | } | |
423 | ||
424 | static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr, | |
425 | char *buf) | |
426 | { | |
427 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
428 | int nr = sensor_attr->index; | |
429 | struct vt8231_data *data = vt8231_update_device(dev); | |
430 | return sprintf(buf, "%d\n", TEMP_MAXMIN_FROM_REG(data->temp_min[nr])); | |
431 | } | |
432 | ||
433 | static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, | |
434 | const char *buf, size_t count) | |
435 | { | |
436 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
437 | int nr = sensor_attr->index; | |
ec5e1a4b | 438 | struct vt8231_data *data = dev_get_drvdata(dev); |
65fe5c79 GR |
439 | long val; |
440 | int err; | |
441 | ||
442 | err = kstrtol(buf, 10, &val); | |
443 | if (err) | |
444 | return err; | |
1de9e371 | 445 | |
9a61bf63 | 446 | mutex_lock(&data->update_lock); |
2a844c14 | 447 | data->temp_max[nr] = clamp_val(TEMP_MAXMIN_TO_REG(val), 0, 255); |
ec5e1a4b | 448 | vt8231_write_value(data, regtempmax[nr], data->temp_max[nr]); |
9a61bf63 | 449 | mutex_unlock(&data->update_lock); |
1de9e371 RL |
450 | return count; |
451 | } | |
452 | static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr, | |
453 | const char *buf, size_t count) | |
454 | { | |
455 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
456 | int nr = sensor_attr->index; | |
ec5e1a4b | 457 | struct vt8231_data *data = dev_get_drvdata(dev); |
65fe5c79 GR |
458 | long val; |
459 | int err; | |
460 | ||
461 | err = kstrtol(buf, 10, &val); | |
462 | if (err) | |
463 | return err; | |
1de9e371 | 464 | |
9a61bf63 | 465 | mutex_lock(&data->update_lock); |
2a844c14 | 466 | data->temp_min[nr] = clamp_val(TEMP_MAXMIN_TO_REG(val), 0, 255); |
ec5e1a4b | 467 | vt8231_write_value(data, regtempmin[nr], data->temp_min[nr]); |
9a61bf63 | 468 | mutex_unlock(&data->update_lock); |
1de9e371 RL |
469 | return count; |
470 | } | |
471 | ||
61ba0318 GR |
472 | /* |
473 | * Note that these map the Linux temperature sensor numbering (1-6) to the VIA | |
474 | * temperature sensor numbering (0-5) | |
475 | */ | |
1de9e371 RL |
476 | #define define_temperature_sysfs(offset) \ |
477 | static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ | |
478 | show_temp, NULL, offset - 1); \ | |
479 | static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ | |
480 | show_temp_max, set_temp_max, offset - 1); \ | |
e3efa5a7 | 481 | static SENSOR_DEVICE_ATTR(temp##offset##_max_hyst, S_IRUGO | S_IWUSR, \ |
1de9e371 RL |
482 | show_temp_min, set_temp_min, offset - 1) |
483 | ||
484 | static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp0, NULL); | |
485 | static DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR, show_temp0_max, set_temp0_max); | |
65fe5c79 GR |
486 | static DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, show_temp0_min, |
487 | set_temp0_min); | |
1de9e371 RL |
488 | |
489 | define_temperature_sysfs(2); | |
490 | define_temperature_sysfs(3); | |
491 | define_temperature_sysfs(4); | |
492 | define_temperature_sysfs(5); | |
493 | define_temperature_sysfs(6); | |
494 | ||
1de9e371 RL |
495 | /* Fans */ |
496 | static ssize_t show_fan(struct device *dev, struct device_attribute *attr, | |
497 | char *buf) | |
498 | { | |
499 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
500 | int nr = sensor_attr->index; | |
501 | struct vt8231_data *data = vt8231_update_device(dev); | |
502 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr], | |
503 | DIV_FROM_REG(data->fan_div[nr]))); | |
504 | } | |
505 | ||
506 | static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr, | |
507 | char *buf) | |
508 | { | |
509 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
510 | int nr = sensor_attr->index; | |
511 | struct vt8231_data *data = vt8231_update_device(dev); | |
512 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr], | |
513 | DIV_FROM_REG(data->fan_div[nr]))); | |
514 | } | |
515 | ||
516 | static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr, | |
517 | char *buf) | |
518 | { | |
519 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
520 | int nr = sensor_attr->index; | |
521 | struct vt8231_data *data = vt8231_update_device(dev); | |
522 | return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr])); | |
523 | } | |
524 | ||
525 | static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, | |
526 | const char *buf, size_t count) | |
527 | { | |
528 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
529 | int nr = sensor_attr->index; | |
ec5e1a4b | 530 | struct vt8231_data *data = dev_get_drvdata(dev); |
65fe5c79 GR |
531 | unsigned long val; |
532 | int err; | |
533 | ||
534 | err = kstrtoul(buf, 10, &val); | |
535 | if (err) | |
536 | return err; | |
1de9e371 | 537 | |
9a61bf63 | 538 | mutex_lock(&data->update_lock); |
1de9e371 | 539 | data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); |
ec5e1a4b | 540 | vt8231_write_value(data, VT8231_REG_FAN_MIN(nr), data->fan_min[nr]); |
9a61bf63 | 541 | mutex_unlock(&data->update_lock); |
1de9e371 RL |
542 | return count; |
543 | } | |
544 | ||
545 | static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, | |
546 | const char *buf, size_t count) | |
547 | { | |
ec5e1a4b | 548 | struct vt8231_data *data = dev_get_drvdata(dev); |
1de9e371 | 549 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
65fe5c79 | 550 | unsigned long val; |
1de9e371 | 551 | int nr = sensor_attr->index; |
ec5e1a4b | 552 | int old = vt8231_read_value(data, VT8231_REG_FANDIV); |
1de9e371 RL |
553 | long min = FAN_FROM_REG(data->fan_min[nr], |
554 | DIV_FROM_REG(data->fan_div[nr])); | |
65fe5c79 GR |
555 | int err; |
556 | ||
557 | err = kstrtoul(buf, 10, &val); | |
558 | if (err) | |
559 | return err; | |
1de9e371 | 560 | |
9a61bf63 | 561 | mutex_lock(&data->update_lock); |
1de9e371 | 562 | switch (val) { |
65fe5c79 GR |
563 | case 1: |
564 | data->fan_div[nr] = 0; | |
565 | break; | |
566 | case 2: | |
567 | data->fan_div[nr] = 1; | |
568 | break; | |
569 | case 4: | |
570 | data->fan_div[nr] = 2; | |
571 | break; | |
572 | case 8: | |
573 | data->fan_div[nr] = 3; | |
574 | break; | |
1de9e371 | 575 | default: |
b55f3757 GR |
576 | dev_err(dev, |
577 | "fan_div value %ld not supported. Choose one of 1, 2, 4 or 8!\n", | |
578 | val); | |
9a61bf63 | 579 | mutex_unlock(&data->update_lock); |
1de9e371 RL |
580 | return -EINVAL; |
581 | } | |
582 | ||
583 | /* Correct the fan minimum speed */ | |
584 | data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); | |
ec5e1a4b | 585 | vt8231_write_value(data, VT8231_REG_FAN_MIN(nr), data->fan_min[nr]); |
1de9e371 RL |
586 | |
587 | old = (old & 0x0f) | (data->fan_div[1] << 6) | (data->fan_div[0] << 4); | |
ec5e1a4b | 588 | vt8231_write_value(data, VT8231_REG_FANDIV, old); |
9a61bf63 | 589 | mutex_unlock(&data->update_lock); |
1de9e371 RL |
590 | return count; |
591 | } | |
592 | ||
593 | ||
594 | #define define_fan_sysfs(offset) \ | |
595 | static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ | |
596 | show_fan, NULL, offset - 1); \ | |
597 | static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ | |
598 | show_fan_div, set_fan_div, offset - 1); \ | |
599 | static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ | |
600 | show_fan_min, set_fan_min, offset - 1) | |
601 | ||
602 | define_fan_sysfs(1); | |
603 | define_fan_sysfs(2); | |
604 | ||
605 | /* Alarms */ | |
606 | static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, | |
607 | char *buf) | |
608 | { | |
609 | struct vt8231_data *data = vt8231_update_device(dev); | |
610 | return sprintf(buf, "%d\n", data->alarms); | |
611 | } | |
1de9e371 RL |
612 | static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); |
613 | ||
2d1374ca JD |
614 | static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, |
615 | char *buf) | |
616 | { | |
617 | int bitnr = to_sensor_dev_attr(attr)->index; | |
618 | struct vt8231_data *data = vt8231_update_device(dev); | |
619 | return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); | |
620 | } | |
621 | static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4); | |
622 | static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 11); | |
623 | static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 0); | |
624 | static SENSOR_DEVICE_ATTR(temp4_alarm, S_IRUGO, show_alarm, NULL, 1); | |
625 | static SENSOR_DEVICE_ATTR(temp5_alarm, S_IRUGO, show_alarm, NULL, 3); | |
626 | static SENSOR_DEVICE_ATTR(temp6_alarm, S_IRUGO, show_alarm, NULL, 8); | |
627 | static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 11); | |
628 | static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 0); | |
629 | static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 1); | |
630 | static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); | |
631 | static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8); | |
632 | static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 2); | |
633 | static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6); | |
634 | static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7); | |
635 | ||
ec5e1a4b RL |
636 | static ssize_t show_name(struct device *dev, struct device_attribute |
637 | *devattr, char *buf) | |
638 | { | |
639 | struct vt8231_data *data = dev_get_drvdata(dev); | |
640 | return sprintf(buf, "%s\n", data->name); | |
641 | } | |
642 | static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); | |
643 | ||
2d1374ca | 644 | static struct attribute *vt8231_attributes_temps[6][5] = { |
cbeeb5b7 RL |
645 | { |
646 | &dev_attr_temp1_input.attr, | |
647 | &dev_attr_temp1_max_hyst.attr, | |
648 | &dev_attr_temp1_max.attr, | |
2d1374ca | 649 | &sensor_dev_attr_temp1_alarm.dev_attr.attr, |
cbeeb5b7 RL |
650 | NULL |
651 | }, { | |
652 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
653 | &sensor_dev_attr_temp2_max_hyst.dev_attr.attr, | |
654 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
2d1374ca | 655 | &sensor_dev_attr_temp2_alarm.dev_attr.attr, |
cbeeb5b7 RL |
656 | NULL |
657 | }, { | |
658 | &sensor_dev_attr_temp3_input.dev_attr.attr, | |
659 | &sensor_dev_attr_temp3_max_hyst.dev_attr.attr, | |
660 | &sensor_dev_attr_temp3_max.dev_attr.attr, | |
2d1374ca | 661 | &sensor_dev_attr_temp3_alarm.dev_attr.attr, |
cbeeb5b7 RL |
662 | NULL |
663 | }, { | |
664 | &sensor_dev_attr_temp4_input.dev_attr.attr, | |
665 | &sensor_dev_attr_temp4_max_hyst.dev_attr.attr, | |
666 | &sensor_dev_attr_temp4_max.dev_attr.attr, | |
2d1374ca | 667 | &sensor_dev_attr_temp4_alarm.dev_attr.attr, |
cbeeb5b7 RL |
668 | NULL |
669 | }, { | |
670 | &sensor_dev_attr_temp5_input.dev_attr.attr, | |
671 | &sensor_dev_attr_temp5_max_hyst.dev_attr.attr, | |
672 | &sensor_dev_attr_temp5_max.dev_attr.attr, | |
2d1374ca | 673 | &sensor_dev_attr_temp5_alarm.dev_attr.attr, |
cbeeb5b7 RL |
674 | NULL |
675 | }, { | |
676 | &sensor_dev_attr_temp6_input.dev_attr.attr, | |
677 | &sensor_dev_attr_temp6_max_hyst.dev_attr.attr, | |
678 | &sensor_dev_attr_temp6_max.dev_attr.attr, | |
2d1374ca | 679 | &sensor_dev_attr_temp6_alarm.dev_attr.attr, |
cbeeb5b7 RL |
680 | NULL |
681 | } | |
682 | }; | |
683 | ||
684 | static const struct attribute_group vt8231_group_temps[6] = { | |
685 | { .attrs = vt8231_attributes_temps[0] }, | |
686 | { .attrs = vt8231_attributes_temps[1] }, | |
687 | { .attrs = vt8231_attributes_temps[2] }, | |
688 | { .attrs = vt8231_attributes_temps[3] }, | |
689 | { .attrs = vt8231_attributes_temps[4] }, | |
690 | { .attrs = vt8231_attributes_temps[5] }, | |
691 | }; | |
692 | ||
2d1374ca | 693 | static struct attribute *vt8231_attributes_volts[6][5] = { |
cbeeb5b7 RL |
694 | { |
695 | &sensor_dev_attr_in0_input.dev_attr.attr, | |
696 | &sensor_dev_attr_in0_min.dev_attr.attr, | |
697 | &sensor_dev_attr_in0_max.dev_attr.attr, | |
2d1374ca | 698 | &sensor_dev_attr_in0_alarm.dev_attr.attr, |
cbeeb5b7 RL |
699 | NULL |
700 | }, { | |
701 | &sensor_dev_attr_in1_input.dev_attr.attr, | |
702 | &sensor_dev_attr_in1_min.dev_attr.attr, | |
703 | &sensor_dev_attr_in1_max.dev_attr.attr, | |
2d1374ca | 704 | &sensor_dev_attr_in1_alarm.dev_attr.attr, |
cbeeb5b7 RL |
705 | NULL |
706 | }, { | |
707 | &sensor_dev_attr_in2_input.dev_attr.attr, | |
708 | &sensor_dev_attr_in2_min.dev_attr.attr, | |
709 | &sensor_dev_attr_in2_max.dev_attr.attr, | |
2d1374ca | 710 | &sensor_dev_attr_in2_alarm.dev_attr.attr, |
cbeeb5b7 RL |
711 | NULL |
712 | }, { | |
713 | &sensor_dev_attr_in3_input.dev_attr.attr, | |
714 | &sensor_dev_attr_in3_min.dev_attr.attr, | |
715 | &sensor_dev_attr_in3_max.dev_attr.attr, | |
2d1374ca | 716 | &sensor_dev_attr_in3_alarm.dev_attr.attr, |
cbeeb5b7 RL |
717 | NULL |
718 | }, { | |
719 | &sensor_dev_attr_in4_input.dev_attr.attr, | |
720 | &sensor_dev_attr_in4_min.dev_attr.attr, | |
721 | &sensor_dev_attr_in4_max.dev_attr.attr, | |
2d1374ca | 722 | &sensor_dev_attr_in4_alarm.dev_attr.attr, |
cbeeb5b7 RL |
723 | NULL |
724 | }, { | |
725 | &dev_attr_in5_input.attr, | |
726 | &dev_attr_in5_min.attr, | |
727 | &dev_attr_in5_max.attr, | |
2d1374ca | 728 | &sensor_dev_attr_in5_alarm.dev_attr.attr, |
cbeeb5b7 RL |
729 | NULL |
730 | } | |
731 | }; | |
732 | ||
733 | static const struct attribute_group vt8231_group_volts[6] = { | |
734 | { .attrs = vt8231_attributes_volts[0] }, | |
735 | { .attrs = vt8231_attributes_volts[1] }, | |
736 | { .attrs = vt8231_attributes_volts[2] }, | |
737 | { .attrs = vt8231_attributes_volts[3] }, | |
738 | { .attrs = vt8231_attributes_volts[4] }, | |
739 | { .attrs = vt8231_attributes_volts[5] }, | |
740 | }; | |
741 | ||
742 | static struct attribute *vt8231_attributes[] = { | |
743 | &sensor_dev_attr_fan1_input.dev_attr.attr, | |
744 | &sensor_dev_attr_fan2_input.dev_attr.attr, | |
745 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
746 | &sensor_dev_attr_fan2_min.dev_attr.attr, | |
747 | &sensor_dev_attr_fan1_div.dev_attr.attr, | |
748 | &sensor_dev_attr_fan2_div.dev_attr.attr, | |
2d1374ca JD |
749 | &sensor_dev_attr_fan1_alarm.dev_attr.attr, |
750 | &sensor_dev_attr_fan2_alarm.dev_attr.attr, | |
cbeeb5b7 | 751 | &dev_attr_alarms.attr, |
ec5e1a4b | 752 | &dev_attr_name.attr, |
cbeeb5b7 RL |
753 | NULL |
754 | }; | |
755 | ||
756 | static const struct attribute_group vt8231_group = { | |
757 | .attrs = vt8231_attributes, | |
758 | }; | |
759 | ||
ec5e1a4b | 760 | static struct platform_driver vt8231_driver = { |
cdaf7934 | 761 | .driver = { |
87218842 | 762 | .owner = THIS_MODULE, |
cdaf7934 LR |
763 | .name = "vt8231", |
764 | }, | |
ec5e1a4b | 765 | .probe = vt8231_probe, |
9e5e9b7a | 766 | .remove = vt8231_remove, |
1de9e371 RL |
767 | }; |
768 | ||
600151b9 | 769 | static DEFINE_PCI_DEVICE_TABLE(vt8231_pci_ids) = { |
1de9e371 RL |
770 | { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231_4) }, |
771 | { 0, } | |
772 | }; | |
773 | ||
774 | MODULE_DEVICE_TABLE(pci, vt8231_pci_ids); | |
775 | ||
6c931ae1 | 776 | static int vt8231_pci_probe(struct pci_dev *dev, |
65fe5c79 | 777 | const struct pci_device_id *id); |
1de9e371 RL |
778 | |
779 | static struct pci_driver vt8231_pci_driver = { | |
780 | .name = "vt8231", | |
781 | .id_table = vt8231_pci_ids, | |
782 | .probe = vt8231_pci_probe, | |
783 | }; | |
784 | ||
a022fef5 | 785 | static int vt8231_probe(struct platform_device *pdev) |
1de9e371 | 786 | { |
ec5e1a4b | 787 | struct resource *res; |
1de9e371 RL |
788 | struct vt8231_data *data; |
789 | int err = 0, i; | |
1de9e371 RL |
790 | |
791 | /* Reserve the ISA region */ | |
ec5e1a4b | 792 | res = platform_get_resource(pdev, IORESOURCE_IO, 0); |
7711f1bd GR |
793 | if (!devm_request_region(&pdev->dev, res->start, VT8231_EXTENT, |
794 | vt8231_driver.driver.name)) { | |
ec5e1a4b RL |
795 | dev_err(&pdev->dev, "Region 0x%lx-0x%lx already in use!\n", |
796 | (unsigned long)res->start, (unsigned long)res->end); | |
1de9e371 RL |
797 | return -ENODEV; |
798 | } | |
799 | ||
7711f1bd GR |
800 | data = devm_kzalloc(&pdev->dev, sizeof(struct vt8231_data), GFP_KERNEL); |
801 | if (!data) | |
802 | return -ENOMEM; | |
1de9e371 | 803 | |
ec5e1a4b RL |
804 | platform_set_drvdata(pdev, data); |
805 | data->addr = res->start; | |
806 | data->name = "vt8231"; | |
1de9e371 | 807 | |
9a61bf63 | 808 | mutex_init(&data->update_lock); |
ec5e1a4b | 809 | vt8231_init_device(data); |
1de9e371 RL |
810 | |
811 | /* Register sysfs hooks */ | |
65fe5c79 GR |
812 | err = sysfs_create_group(&pdev->dev.kobj, &vt8231_group); |
813 | if (err) | |
7711f1bd | 814 | return err; |
1de9e371 RL |
815 | |
816 | /* Must update device information to find out the config field */ | |
ec5e1a4b | 817 | data->uch_config = vt8231_read_value(data, VT8231_REG_UCH_CONFIG); |
1de9e371 | 818 | |
cbeeb5b7 | 819 | for (i = 0; i < ARRAY_SIZE(vt8231_group_temps); i++) { |
1de9e371 | 820 | if (ISTEMP(i, data->uch_config)) { |
65fe5c79 GR |
821 | err = sysfs_create_group(&pdev->dev.kobj, |
822 | &vt8231_group_temps[i]); | |
823 | if (err) | |
cbeeb5b7 | 824 | goto exit_remove_files; |
1de9e371 RL |
825 | } |
826 | } | |
827 | ||
cbeeb5b7 | 828 | for (i = 0; i < ARRAY_SIZE(vt8231_group_volts); i++) { |
1de9e371 | 829 | if (ISVOLT(i, data->uch_config)) { |
65fe5c79 GR |
830 | err = sysfs_create_group(&pdev->dev.kobj, |
831 | &vt8231_group_volts[i]); | |
832 | if (err) | |
cbeeb5b7 | 833 | goto exit_remove_files; |
1de9e371 RL |
834 | } |
835 | } | |
836 | ||
1beeffe4 TJ |
837 | data->hwmon_dev = hwmon_device_register(&pdev->dev); |
838 | if (IS_ERR(data->hwmon_dev)) { | |
839 | err = PTR_ERR(data->hwmon_dev); | |
cbeeb5b7 RL |
840 | goto exit_remove_files; |
841 | } | |
1de9e371 RL |
842 | return 0; |
843 | ||
cbeeb5b7 RL |
844 | exit_remove_files: |
845 | for (i = 0; i < ARRAY_SIZE(vt8231_group_volts); i++) | |
ec5e1a4b | 846 | sysfs_remove_group(&pdev->dev.kobj, &vt8231_group_volts[i]); |
cbeeb5b7 RL |
847 | |
848 | for (i = 0; i < ARRAY_SIZE(vt8231_group_temps); i++) | |
ec5e1a4b RL |
849 | sysfs_remove_group(&pdev->dev.kobj, &vt8231_group_temps[i]); |
850 | ||
851 | sysfs_remove_group(&pdev->dev.kobj, &vt8231_group); | |
1de9e371 RL |
852 | return err; |
853 | } | |
854 | ||
281dfd0b | 855 | static int vt8231_remove(struct platform_device *pdev) |
1de9e371 | 856 | { |
ec5e1a4b RL |
857 | struct vt8231_data *data = platform_get_drvdata(pdev); |
858 | int i; | |
1de9e371 | 859 | |
1beeffe4 | 860 | hwmon_device_unregister(data->hwmon_dev); |
1de9e371 | 861 | |
cbeeb5b7 | 862 | for (i = 0; i < ARRAY_SIZE(vt8231_group_volts); i++) |
ec5e1a4b | 863 | sysfs_remove_group(&pdev->dev.kobj, &vt8231_group_volts[i]); |
cbeeb5b7 RL |
864 | |
865 | for (i = 0; i < ARRAY_SIZE(vt8231_group_temps); i++) | |
ec5e1a4b | 866 | sysfs_remove_group(&pdev->dev.kobj, &vt8231_group_temps[i]); |
cbeeb5b7 | 867 | |
ec5e1a4b | 868 | sysfs_remove_group(&pdev->dev.kobj, &vt8231_group); |
cbeeb5b7 | 869 | |
1de9e371 RL |
870 | return 0; |
871 | } | |
872 | ||
ec5e1a4b | 873 | static void vt8231_init_device(struct vt8231_data *data) |
1de9e371 | 874 | { |
ec5e1a4b RL |
875 | vt8231_write_value(data, VT8231_REG_TEMP1_CONFIG, 0); |
876 | vt8231_write_value(data, VT8231_REG_TEMP2_CONFIG, 0); | |
1de9e371 RL |
877 | } |
878 | ||
879 | static struct vt8231_data *vt8231_update_device(struct device *dev) | |
880 | { | |
ec5e1a4b | 881 | struct vt8231_data *data = dev_get_drvdata(dev); |
1de9e371 RL |
882 | int i; |
883 | u16 low; | |
884 | ||
9a61bf63 | 885 | mutex_lock(&data->update_lock); |
1de9e371 RL |
886 | |
887 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) | |
888 | || !data->valid) { | |
889 | for (i = 0; i < 6; i++) { | |
890 | if (ISVOLT(i, data->uch_config)) { | |
ec5e1a4b | 891 | data->in[i] = vt8231_read_value(data, |
1de9e371 | 892 | regvolt[i]); |
ec5e1a4b | 893 | data->in_min[i] = vt8231_read_value(data, |
1de9e371 | 894 | regvoltmin[i]); |
ec5e1a4b | 895 | data->in_max[i] = vt8231_read_value(data, |
1de9e371 RL |
896 | regvoltmax[i]); |
897 | } | |
898 | } | |
899 | for (i = 0; i < 2; i++) { | |
ec5e1a4b | 900 | data->fan[i] = vt8231_read_value(data, |
1de9e371 | 901 | VT8231_REG_FAN(i)); |
ec5e1a4b | 902 | data->fan_min[i] = vt8231_read_value(data, |
1de9e371 RL |
903 | VT8231_REG_FAN_MIN(i)); |
904 | } | |
905 | ||
ec5e1a4b | 906 | low = vt8231_read_value(data, VT8231_REG_TEMP_LOW01); |
1de9e371 | 907 | low = (low >> 6) | ((low & 0x30) >> 2) |
ec5e1a4b | 908 | | (vt8231_read_value(data, VT8231_REG_TEMP_LOW25) << 4); |
1de9e371 RL |
909 | for (i = 0; i < 6; i++) { |
910 | if (ISTEMP(i, data->uch_config)) { | |
ec5e1a4b | 911 | data->temp[i] = (vt8231_read_value(data, |
1de9e371 RL |
912 | regtemp[i]) << 2) |
913 | | ((low >> (2 * i)) & 0x03); | |
ec5e1a4b | 914 | data->temp_max[i] = vt8231_read_value(data, |
1de9e371 | 915 | regtempmax[i]); |
ec5e1a4b | 916 | data->temp_min[i] = vt8231_read_value(data, |
1de9e371 RL |
917 | regtempmin[i]); |
918 | } | |
919 | } | |
920 | ||
ec5e1a4b | 921 | i = vt8231_read_value(data, VT8231_REG_FANDIV); |
1de9e371 RL |
922 | data->fan_div[0] = (i >> 4) & 0x03; |
923 | data->fan_div[1] = i >> 6; | |
ec5e1a4b RL |
924 | data->alarms = vt8231_read_value(data, VT8231_REG_ALARM1) | |
925 | (vt8231_read_value(data, VT8231_REG_ALARM2) << 8); | |
1de9e371 RL |
926 | |
927 | /* Set alarm flags correctly */ | |
65fe5c79 | 928 | if (!data->fan[0] && data->fan_min[0]) |
1de9e371 | 929 | data->alarms |= 0x40; |
65fe5c79 | 930 | else if (data->fan[0] && !data->fan_min[0]) |
1de9e371 | 931 | data->alarms &= ~0x40; |
1de9e371 | 932 | |
65fe5c79 | 933 | if (!data->fan[1] && data->fan_min[1]) |
1de9e371 | 934 | data->alarms |= 0x80; |
65fe5c79 | 935 | else if (data->fan[1] && !data->fan_min[1]) |
1de9e371 | 936 | data->alarms &= ~0x80; |
1de9e371 RL |
937 | |
938 | data->last_updated = jiffies; | |
939 | data->valid = 1; | |
940 | } | |
941 | ||
9a61bf63 | 942 | mutex_unlock(&data->update_lock); |
1de9e371 RL |
943 | |
944 | return data; | |
945 | } | |
946 | ||
6c931ae1 | 947 | static int vt8231_device_add(unsigned short address) |
ec5e1a4b RL |
948 | { |
949 | struct resource res = { | |
950 | .start = address, | |
951 | .end = address + VT8231_EXTENT - 1, | |
952 | .name = "vt8231", | |
953 | .flags = IORESOURCE_IO, | |
954 | }; | |
955 | int err; | |
956 | ||
b9acb64a JD |
957 | err = acpi_check_resource_conflict(&res); |
958 | if (err) | |
959 | goto exit; | |
960 | ||
ec5e1a4b RL |
961 | pdev = platform_device_alloc("vt8231", address); |
962 | if (!pdev) { | |
963 | err = -ENOMEM; | |
9d72be0d | 964 | pr_err("Device allocation failed\n"); |
ec5e1a4b RL |
965 | goto exit; |
966 | } | |
967 | ||
968 | err = platform_device_add_resources(pdev, &res, 1); | |
969 | if (err) { | |
9d72be0d | 970 | pr_err("Device resource addition failed (%d)\n", err); |
ec5e1a4b RL |
971 | goto exit_device_put; |
972 | } | |
973 | ||
974 | err = platform_device_add(pdev); | |
975 | if (err) { | |
9d72be0d | 976 | pr_err("Device addition failed (%d)\n", err); |
ec5e1a4b RL |
977 | goto exit_device_put; |
978 | } | |
979 | ||
980 | return 0; | |
981 | ||
982 | exit_device_put: | |
983 | platform_device_put(pdev); | |
984 | exit: | |
985 | return err; | |
986 | } | |
987 | ||
6c931ae1 | 988 | static int vt8231_pci_probe(struct pci_dev *dev, |
1de9e371 RL |
989 | const struct pci_device_id *id) |
990 | { | |
ec5e1a4b RL |
991 | u16 address, val; |
992 | if (force_addr) { | |
993 | address = force_addr & 0xff00; | |
994 | dev_warn(&dev->dev, "Forcing ISA address 0x%x\n", | |
995 | address); | |
996 | ||
997 | if (PCIBIOS_SUCCESSFUL != | |
998 | pci_write_config_word(dev, VT8231_BASE_REG, address | 1)) | |
999 | return -ENODEV; | |
1000 | } | |
1de9e371 RL |
1001 | |
1002 | if (PCIBIOS_SUCCESSFUL != pci_read_config_word(dev, VT8231_BASE_REG, | |
1003 | &val)) | |
1004 | return -ENODEV; | |
1005 | ||
ec5e1a4b RL |
1006 | address = val & ~(VT8231_EXTENT - 1); |
1007 | if (address == 0) { | |
4cae7878 | 1008 | dev_err(&dev->dev, "base address not set - upgrade BIOS or use force_addr=0xaddr\n"); |
1de9e371 RL |
1009 | return -ENODEV; |
1010 | } | |
1011 | ||
ec5e1a4b RL |
1012 | if (PCIBIOS_SUCCESSFUL != pci_read_config_word(dev, VT8231_ENABLE_REG, |
1013 | &val)) | |
1014 | return -ENODEV; | |
1de9e371 | 1015 | |
ec5e1a4b RL |
1016 | if (!(val & 0x0001)) { |
1017 | dev_warn(&dev->dev, "enabling sensors\n"); | |
1018 | if (PCIBIOS_SUCCESSFUL != | |
1019 | pci_write_config_word(dev, VT8231_ENABLE_REG, | |
1020 | val | 0x0001)) | |
1021 | return -ENODEV; | |
1de9e371 RL |
1022 | } |
1023 | ||
ec5e1a4b RL |
1024 | if (platform_driver_register(&vt8231_driver)) |
1025 | goto exit; | |
1026 | ||
1027 | /* Sets global pdev as a side effect */ | |
1028 | if (vt8231_device_add(address)) | |
1029 | goto exit_unregister; | |
1030 | ||
61ba0318 GR |
1031 | /* |
1032 | * Always return failure here. This is to allow other drivers to bind | |
1de9e371 RL |
1033 | * to this pci device. We don't really want to have control over the |
1034 | * pci device, we only wanted to read as few register values from it. | |
1035 | */ | |
ec5e1a4b | 1036 | |
61ba0318 GR |
1037 | /* |
1038 | * We do, however, mark ourselves as using the PCI device to stop it | |
1039 | * getting unloaded. | |
1040 | */ | |
ec5e1a4b RL |
1041 | s_bridge = pci_dev_get(dev); |
1042 | return -ENODEV; | |
1043 | ||
1044 | exit_unregister: | |
1045 | platform_driver_unregister(&vt8231_driver); | |
1046 | exit: | |
1de9e371 RL |
1047 | return -ENODEV; |
1048 | } | |
1049 | ||
1050 | static int __init sm_vt8231_init(void) | |
1051 | { | |
93b47684 | 1052 | return pci_register_driver(&vt8231_pci_driver); |
1de9e371 RL |
1053 | } |
1054 | ||
1055 | static void __exit sm_vt8231_exit(void) | |
1056 | { | |
1057 | pci_unregister_driver(&vt8231_pci_driver); | |
1058 | if (s_bridge != NULL) { | |
ec5e1a4b RL |
1059 | platform_device_unregister(pdev); |
1060 | platform_driver_unregister(&vt8231_driver); | |
1de9e371 RL |
1061 | pci_dev_put(s_bridge); |
1062 | s_bridge = NULL; | |
1063 | } | |
1064 | } | |
1065 | ||
af865765 | 1066 | MODULE_AUTHOR("Roger Lucas <vt8231@hiddenengine.co.uk>"); |
1de9e371 RL |
1067 | MODULE_DESCRIPTION("VT8231 sensors"); |
1068 | MODULE_LICENSE("GPL"); | |
1069 | ||
1070 | module_init(sm_vt8231_init); | |
1071 | module_exit(sm_vt8231_exit); |