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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 | { | |
3806b45b | 148 | if (rpm <= 0 || rpm > 1310720) |
1de9e371 | 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 */ | |
d5034db6 JL |
266 | static ssize_t in5_input_show(struct device *dev, |
267 | struct device_attribute *attr, char *buf) | |
1de9e371 RL |
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 | ||
d5034db6 | 275 | static ssize_t in5_min_show(struct device *dev, struct device_attribute *attr, |
1de9e371 RL |
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 | ||
d5034db6 | 284 | static ssize_t in5_max_show(struct device *dev, struct device_attribute *attr, |
1de9e371 RL |
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 | ||
d5034db6 JL |
293 | static ssize_t in5_min_store(struct device *dev, |
294 | struct device_attribute *attr, const char *buf, | |
295 | size_t count) | |
1de9e371 | 296 | { |
ec5e1a4b | 297 | struct vt8231_data *data = dev_get_drvdata(dev); |
65fe5c79 GR |
298 | unsigned long val; |
299 | int err; | |
300 | ||
301 | err = kstrtoul(buf, 10, &val); | |
302 | if (err) | |
303 | return err; | |
1de9e371 | 304 | |
9a61bf63 | 305 | mutex_lock(&data->update_lock); |
2a844c14 GR |
306 | data->in_min[5] = clamp_val(((val * 958 * 34) / (10000 * 54)) + 3, |
307 | 0, 255); | |
ec5e1a4b | 308 | vt8231_write_value(data, regvoltmin[5], data->in_min[5]); |
9a61bf63 | 309 | mutex_unlock(&data->update_lock); |
1de9e371 RL |
310 | return count; |
311 | } | |
312 | ||
d5034db6 JL |
313 | static ssize_t in5_max_store(struct device *dev, |
314 | struct device_attribute *attr, const char *buf, | |
315 | size_t count) | |
1de9e371 | 316 | { |
ec5e1a4b | 317 | struct vt8231_data *data = dev_get_drvdata(dev); |
65fe5c79 GR |
318 | unsigned long val; |
319 | int err; | |
320 | ||
321 | err = kstrtoul(buf, 10, &val); | |
322 | if (err) | |
323 | return err; | |
1de9e371 | 324 | |
9a61bf63 | 325 | mutex_lock(&data->update_lock); |
2a844c14 GR |
326 | data->in_max[5] = clamp_val(((val * 958 * 34) / (10000 * 54)) + 3, |
327 | 0, 255); | |
ec5e1a4b | 328 | vt8231_write_value(data, regvoltmax[5], data->in_max[5]); |
9a61bf63 | 329 | mutex_unlock(&data->update_lock); |
1de9e371 RL |
330 | return count; |
331 | } | |
332 | ||
333 | #define define_voltage_sysfs(offset) \ | |
334 | static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ | |
335 | show_in, NULL, offset); \ | |
336 | static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ | |
337 | show_in_min, set_in_min, offset); \ | |
338 | static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ | |
339 | show_in_max, set_in_max, offset) | |
340 | ||
341 | define_voltage_sysfs(0); | |
342 | define_voltage_sysfs(1); | |
343 | define_voltage_sysfs(2); | |
344 | define_voltage_sysfs(3); | |
345 | define_voltage_sysfs(4); | |
346 | ||
d5034db6 JL |
347 | static DEVICE_ATTR_RO(in5_input); |
348 | static DEVICE_ATTR_RW(in5_min); | |
349 | static DEVICE_ATTR_RW(in5_max); | |
1de9e371 RL |
350 | |
351 | /* Temperatures */ | |
d5034db6 JL |
352 | static ssize_t temp1_input_show(struct device *dev, |
353 | struct device_attribute *attr, char *buf) | |
1de9e371 RL |
354 | { |
355 | struct vt8231_data *data = vt8231_update_device(dev); | |
356 | return sprintf(buf, "%d\n", data->temp[0] * 250); | |
357 | } | |
358 | ||
d5034db6 | 359 | static ssize_t temp1_max_show(struct device *dev, struct device_attribute *attr, |
1de9e371 RL |
360 | char *buf) |
361 | { | |
362 | struct vt8231_data *data = vt8231_update_device(dev); | |
363 | return sprintf(buf, "%d\n", data->temp_max[0] * 1000); | |
364 | } | |
365 | ||
d5034db6 JL |
366 | static ssize_t temp1_max_hyst_show(struct device *dev, |
367 | struct device_attribute *attr, char *buf) | |
1de9e371 RL |
368 | { |
369 | struct vt8231_data *data = vt8231_update_device(dev); | |
370 | return sprintf(buf, "%d\n", data->temp_min[0] * 1000); | |
371 | } | |
372 | ||
d5034db6 JL |
373 | static ssize_t temp1_max_store(struct device *dev, |
374 | struct device_attribute *attr, const char *buf, | |
375 | size_t count) | |
1de9e371 | 376 | { |
ec5e1a4b | 377 | struct vt8231_data *data = dev_get_drvdata(dev); |
65fe5c79 GR |
378 | long val; |
379 | int err; | |
380 | ||
381 | err = kstrtol(buf, 10, &val); | |
382 | if (err) | |
383 | return err; | |
1de9e371 | 384 | |
9a61bf63 | 385 | mutex_lock(&data->update_lock); |
2a844c14 | 386 | data->temp_max[0] = clamp_val((val + 500) / 1000, 0, 255); |
ec5e1a4b | 387 | vt8231_write_value(data, regtempmax[0], data->temp_max[0]); |
9a61bf63 | 388 | mutex_unlock(&data->update_lock); |
1de9e371 RL |
389 | return count; |
390 | } | |
d5034db6 JL |
391 | static ssize_t temp1_max_hyst_store(struct device *dev, |
392 | struct device_attribute *attr, | |
393 | const char *buf, size_t count) | |
1de9e371 | 394 | { |
ec5e1a4b | 395 | struct vt8231_data *data = dev_get_drvdata(dev); |
65fe5c79 GR |
396 | long val; |
397 | int err; | |
398 | ||
399 | err = kstrtol(buf, 10, &val); | |
400 | if (err) | |
401 | return err; | |
1de9e371 | 402 | |
9a61bf63 | 403 | mutex_lock(&data->update_lock); |
2a844c14 | 404 | data->temp_min[0] = clamp_val((val + 500) / 1000, 0, 255); |
ec5e1a4b | 405 | vt8231_write_value(data, regtempmin[0], data->temp_min[0]); |
9a61bf63 | 406 | mutex_unlock(&data->update_lock); |
1de9e371 RL |
407 | return count; |
408 | } | |
409 | ||
410 | static ssize_t show_temp(struct device *dev, struct device_attribute *attr, | |
411 | char *buf) | |
412 | { | |
413 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
414 | int nr = sensor_attr->index; | |
415 | struct vt8231_data *data = vt8231_update_device(dev); | |
416 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr])); | |
417 | } | |
418 | ||
419 | static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr, | |
420 | char *buf) | |
421 | { | |
422 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
423 | int nr = sensor_attr->index; | |
424 | struct vt8231_data *data = vt8231_update_device(dev); | |
425 | return sprintf(buf, "%d\n", TEMP_MAXMIN_FROM_REG(data->temp_max[nr])); | |
426 | } | |
427 | ||
428 | static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr, | |
429 | char *buf) | |
430 | { | |
431 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
432 | int nr = sensor_attr->index; | |
433 | struct vt8231_data *data = vt8231_update_device(dev); | |
434 | return sprintf(buf, "%d\n", TEMP_MAXMIN_FROM_REG(data->temp_min[nr])); | |
435 | } | |
436 | ||
437 | static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, | |
438 | const char *buf, size_t count) | |
439 | { | |
440 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
441 | int nr = sensor_attr->index; | |
ec5e1a4b | 442 | struct vt8231_data *data = dev_get_drvdata(dev); |
65fe5c79 GR |
443 | long val; |
444 | int err; | |
445 | ||
446 | err = kstrtol(buf, 10, &val); | |
447 | if (err) | |
448 | return err; | |
1de9e371 | 449 | |
9a61bf63 | 450 | mutex_lock(&data->update_lock); |
2a844c14 | 451 | data->temp_max[nr] = clamp_val(TEMP_MAXMIN_TO_REG(val), 0, 255); |
ec5e1a4b | 452 | vt8231_write_value(data, regtempmax[nr], data->temp_max[nr]); |
9a61bf63 | 453 | mutex_unlock(&data->update_lock); |
1de9e371 RL |
454 | return count; |
455 | } | |
456 | static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr, | |
457 | const char *buf, size_t count) | |
458 | { | |
459 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
460 | int nr = sensor_attr->index; | |
ec5e1a4b | 461 | struct vt8231_data *data = dev_get_drvdata(dev); |
65fe5c79 GR |
462 | long val; |
463 | int err; | |
464 | ||
465 | err = kstrtol(buf, 10, &val); | |
466 | if (err) | |
467 | return err; | |
1de9e371 | 468 | |
9a61bf63 | 469 | mutex_lock(&data->update_lock); |
2a844c14 | 470 | data->temp_min[nr] = clamp_val(TEMP_MAXMIN_TO_REG(val), 0, 255); |
ec5e1a4b | 471 | vt8231_write_value(data, regtempmin[nr], data->temp_min[nr]); |
9a61bf63 | 472 | mutex_unlock(&data->update_lock); |
1de9e371 RL |
473 | return count; |
474 | } | |
475 | ||
61ba0318 GR |
476 | /* |
477 | * Note that these map the Linux temperature sensor numbering (1-6) to the VIA | |
478 | * temperature sensor numbering (0-5) | |
479 | */ | |
1de9e371 RL |
480 | #define define_temperature_sysfs(offset) \ |
481 | static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ | |
482 | show_temp, NULL, offset - 1); \ | |
483 | static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ | |
484 | show_temp_max, set_temp_max, offset - 1); \ | |
e3efa5a7 | 485 | static SENSOR_DEVICE_ATTR(temp##offset##_max_hyst, S_IRUGO | S_IWUSR, \ |
1de9e371 RL |
486 | show_temp_min, set_temp_min, offset - 1) |
487 | ||
d5034db6 JL |
488 | static DEVICE_ATTR_RO(temp1_input); |
489 | static DEVICE_ATTR_RW(temp1_max); | |
490 | static DEVICE_ATTR_RW(temp1_max_hyst); | |
1de9e371 RL |
491 | |
492 | define_temperature_sysfs(2); | |
493 | define_temperature_sysfs(3); | |
494 | define_temperature_sysfs(4); | |
495 | define_temperature_sysfs(5); | |
496 | define_temperature_sysfs(6); | |
497 | ||
1de9e371 RL |
498 | /* Fans */ |
499 | static ssize_t show_fan(struct device *dev, struct device_attribute *attr, | |
500 | char *buf) | |
501 | { | |
502 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
503 | int nr = sensor_attr->index; | |
504 | struct vt8231_data *data = vt8231_update_device(dev); | |
505 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr], | |
506 | DIV_FROM_REG(data->fan_div[nr]))); | |
507 | } | |
508 | ||
509 | static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr, | |
510 | char *buf) | |
511 | { | |
512 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
513 | int nr = sensor_attr->index; | |
514 | struct vt8231_data *data = vt8231_update_device(dev); | |
515 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr], | |
516 | DIV_FROM_REG(data->fan_div[nr]))); | |
517 | } | |
518 | ||
519 | static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr, | |
520 | char *buf) | |
521 | { | |
522 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
523 | int nr = sensor_attr->index; | |
524 | struct vt8231_data *data = vt8231_update_device(dev); | |
525 | return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr])); | |
526 | } | |
527 | ||
528 | static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, | |
529 | const char *buf, size_t count) | |
530 | { | |
531 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
532 | int nr = sensor_attr->index; | |
ec5e1a4b | 533 | struct vt8231_data *data = dev_get_drvdata(dev); |
65fe5c79 GR |
534 | unsigned long val; |
535 | int err; | |
536 | ||
537 | err = kstrtoul(buf, 10, &val); | |
538 | if (err) | |
539 | return err; | |
1de9e371 | 540 | |
9a61bf63 | 541 | mutex_lock(&data->update_lock); |
1de9e371 | 542 | data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); |
ec5e1a4b | 543 | vt8231_write_value(data, VT8231_REG_FAN_MIN(nr), data->fan_min[nr]); |
9a61bf63 | 544 | mutex_unlock(&data->update_lock); |
1de9e371 RL |
545 | return count; |
546 | } | |
547 | ||
548 | static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, | |
549 | const char *buf, size_t count) | |
550 | { | |
ec5e1a4b | 551 | struct vt8231_data *data = dev_get_drvdata(dev); |
1de9e371 | 552 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
65fe5c79 | 553 | unsigned long val; |
1de9e371 | 554 | int nr = sensor_attr->index; |
ec5e1a4b | 555 | int old = vt8231_read_value(data, VT8231_REG_FANDIV); |
1de9e371 RL |
556 | long min = FAN_FROM_REG(data->fan_min[nr], |
557 | DIV_FROM_REG(data->fan_div[nr])); | |
65fe5c79 GR |
558 | int err; |
559 | ||
560 | err = kstrtoul(buf, 10, &val); | |
561 | if (err) | |
562 | return err; | |
1de9e371 | 563 | |
9a61bf63 | 564 | mutex_lock(&data->update_lock); |
1de9e371 | 565 | switch (val) { |
65fe5c79 GR |
566 | case 1: |
567 | data->fan_div[nr] = 0; | |
568 | break; | |
569 | case 2: | |
570 | data->fan_div[nr] = 1; | |
571 | break; | |
572 | case 4: | |
573 | data->fan_div[nr] = 2; | |
574 | break; | |
575 | case 8: | |
576 | data->fan_div[nr] = 3; | |
577 | break; | |
1de9e371 | 578 | default: |
b55f3757 GR |
579 | dev_err(dev, |
580 | "fan_div value %ld not supported. Choose one of 1, 2, 4 or 8!\n", | |
581 | val); | |
9a61bf63 | 582 | mutex_unlock(&data->update_lock); |
1de9e371 RL |
583 | return -EINVAL; |
584 | } | |
585 | ||
586 | /* Correct the fan minimum speed */ | |
587 | data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); | |
ec5e1a4b | 588 | vt8231_write_value(data, VT8231_REG_FAN_MIN(nr), data->fan_min[nr]); |
1de9e371 RL |
589 | |
590 | old = (old & 0x0f) | (data->fan_div[1] << 6) | (data->fan_div[0] << 4); | |
ec5e1a4b | 591 | vt8231_write_value(data, VT8231_REG_FANDIV, old); |
9a61bf63 | 592 | mutex_unlock(&data->update_lock); |
1de9e371 RL |
593 | return count; |
594 | } | |
595 | ||
596 | ||
597 | #define define_fan_sysfs(offset) \ | |
598 | static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ | |
599 | show_fan, NULL, offset - 1); \ | |
600 | static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ | |
601 | show_fan_div, set_fan_div, offset - 1); \ | |
602 | static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ | |
603 | show_fan_min, set_fan_min, offset - 1) | |
604 | ||
605 | define_fan_sysfs(1); | |
606 | define_fan_sysfs(2); | |
607 | ||
608 | /* Alarms */ | |
d5034db6 | 609 | static ssize_t alarms_show(struct device *dev, struct device_attribute *attr, |
1de9e371 RL |
610 | char *buf) |
611 | { | |
612 | struct vt8231_data *data = vt8231_update_device(dev); | |
613 | return sprintf(buf, "%d\n", data->alarms); | |
614 | } | |
d5034db6 | 615 | static DEVICE_ATTR_RO(alarms); |
1de9e371 | 616 | |
2d1374ca JD |
617 | static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, |
618 | char *buf) | |
619 | { | |
620 | int bitnr = to_sensor_dev_attr(attr)->index; | |
621 | struct vt8231_data *data = vt8231_update_device(dev); | |
622 | return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); | |
623 | } | |
624 | static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4); | |
625 | static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 11); | |
626 | static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 0); | |
627 | static SENSOR_DEVICE_ATTR(temp4_alarm, S_IRUGO, show_alarm, NULL, 1); | |
628 | static SENSOR_DEVICE_ATTR(temp5_alarm, S_IRUGO, show_alarm, NULL, 3); | |
629 | static SENSOR_DEVICE_ATTR(temp6_alarm, S_IRUGO, show_alarm, NULL, 8); | |
630 | static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 11); | |
631 | static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 0); | |
632 | static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 1); | |
633 | static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); | |
634 | static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8); | |
635 | static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 2); | |
636 | static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6); | |
637 | static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7); | |
638 | ||
d5034db6 | 639 | static ssize_t name_show(struct device *dev, struct device_attribute |
ec5e1a4b RL |
640 | *devattr, char *buf) |
641 | { | |
642 | struct vt8231_data *data = dev_get_drvdata(dev); | |
643 | return sprintf(buf, "%s\n", data->name); | |
644 | } | |
d5034db6 | 645 | static DEVICE_ATTR_RO(name); |
ec5e1a4b | 646 | |
2d1374ca | 647 | static struct attribute *vt8231_attributes_temps[6][5] = { |
cbeeb5b7 RL |
648 | { |
649 | &dev_attr_temp1_input.attr, | |
650 | &dev_attr_temp1_max_hyst.attr, | |
651 | &dev_attr_temp1_max.attr, | |
2d1374ca | 652 | &sensor_dev_attr_temp1_alarm.dev_attr.attr, |
cbeeb5b7 RL |
653 | NULL |
654 | }, { | |
655 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
656 | &sensor_dev_attr_temp2_max_hyst.dev_attr.attr, | |
657 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
2d1374ca | 658 | &sensor_dev_attr_temp2_alarm.dev_attr.attr, |
cbeeb5b7 RL |
659 | NULL |
660 | }, { | |
661 | &sensor_dev_attr_temp3_input.dev_attr.attr, | |
662 | &sensor_dev_attr_temp3_max_hyst.dev_attr.attr, | |
663 | &sensor_dev_attr_temp3_max.dev_attr.attr, | |
2d1374ca | 664 | &sensor_dev_attr_temp3_alarm.dev_attr.attr, |
cbeeb5b7 RL |
665 | NULL |
666 | }, { | |
667 | &sensor_dev_attr_temp4_input.dev_attr.attr, | |
668 | &sensor_dev_attr_temp4_max_hyst.dev_attr.attr, | |
669 | &sensor_dev_attr_temp4_max.dev_attr.attr, | |
2d1374ca | 670 | &sensor_dev_attr_temp4_alarm.dev_attr.attr, |
cbeeb5b7 RL |
671 | NULL |
672 | }, { | |
673 | &sensor_dev_attr_temp5_input.dev_attr.attr, | |
674 | &sensor_dev_attr_temp5_max_hyst.dev_attr.attr, | |
675 | &sensor_dev_attr_temp5_max.dev_attr.attr, | |
2d1374ca | 676 | &sensor_dev_attr_temp5_alarm.dev_attr.attr, |
cbeeb5b7 RL |
677 | NULL |
678 | }, { | |
679 | &sensor_dev_attr_temp6_input.dev_attr.attr, | |
680 | &sensor_dev_attr_temp6_max_hyst.dev_attr.attr, | |
681 | &sensor_dev_attr_temp6_max.dev_attr.attr, | |
2d1374ca | 682 | &sensor_dev_attr_temp6_alarm.dev_attr.attr, |
cbeeb5b7 RL |
683 | NULL |
684 | } | |
685 | }; | |
686 | ||
687 | static const struct attribute_group vt8231_group_temps[6] = { | |
688 | { .attrs = vt8231_attributes_temps[0] }, | |
689 | { .attrs = vt8231_attributes_temps[1] }, | |
690 | { .attrs = vt8231_attributes_temps[2] }, | |
691 | { .attrs = vt8231_attributes_temps[3] }, | |
692 | { .attrs = vt8231_attributes_temps[4] }, | |
693 | { .attrs = vt8231_attributes_temps[5] }, | |
694 | }; | |
695 | ||
2d1374ca | 696 | static struct attribute *vt8231_attributes_volts[6][5] = { |
cbeeb5b7 RL |
697 | { |
698 | &sensor_dev_attr_in0_input.dev_attr.attr, | |
699 | &sensor_dev_attr_in0_min.dev_attr.attr, | |
700 | &sensor_dev_attr_in0_max.dev_attr.attr, | |
2d1374ca | 701 | &sensor_dev_attr_in0_alarm.dev_attr.attr, |
cbeeb5b7 RL |
702 | NULL |
703 | }, { | |
704 | &sensor_dev_attr_in1_input.dev_attr.attr, | |
705 | &sensor_dev_attr_in1_min.dev_attr.attr, | |
706 | &sensor_dev_attr_in1_max.dev_attr.attr, | |
2d1374ca | 707 | &sensor_dev_attr_in1_alarm.dev_attr.attr, |
cbeeb5b7 RL |
708 | NULL |
709 | }, { | |
710 | &sensor_dev_attr_in2_input.dev_attr.attr, | |
711 | &sensor_dev_attr_in2_min.dev_attr.attr, | |
712 | &sensor_dev_attr_in2_max.dev_attr.attr, | |
2d1374ca | 713 | &sensor_dev_attr_in2_alarm.dev_attr.attr, |
cbeeb5b7 RL |
714 | NULL |
715 | }, { | |
716 | &sensor_dev_attr_in3_input.dev_attr.attr, | |
717 | &sensor_dev_attr_in3_min.dev_attr.attr, | |
718 | &sensor_dev_attr_in3_max.dev_attr.attr, | |
2d1374ca | 719 | &sensor_dev_attr_in3_alarm.dev_attr.attr, |
cbeeb5b7 RL |
720 | NULL |
721 | }, { | |
722 | &sensor_dev_attr_in4_input.dev_attr.attr, | |
723 | &sensor_dev_attr_in4_min.dev_attr.attr, | |
724 | &sensor_dev_attr_in4_max.dev_attr.attr, | |
2d1374ca | 725 | &sensor_dev_attr_in4_alarm.dev_attr.attr, |
cbeeb5b7 RL |
726 | NULL |
727 | }, { | |
728 | &dev_attr_in5_input.attr, | |
729 | &dev_attr_in5_min.attr, | |
730 | &dev_attr_in5_max.attr, | |
2d1374ca | 731 | &sensor_dev_attr_in5_alarm.dev_attr.attr, |
cbeeb5b7 RL |
732 | NULL |
733 | } | |
734 | }; | |
735 | ||
736 | static const struct attribute_group vt8231_group_volts[6] = { | |
737 | { .attrs = vt8231_attributes_volts[0] }, | |
738 | { .attrs = vt8231_attributes_volts[1] }, | |
739 | { .attrs = vt8231_attributes_volts[2] }, | |
740 | { .attrs = vt8231_attributes_volts[3] }, | |
741 | { .attrs = vt8231_attributes_volts[4] }, | |
742 | { .attrs = vt8231_attributes_volts[5] }, | |
743 | }; | |
744 | ||
745 | static struct attribute *vt8231_attributes[] = { | |
746 | &sensor_dev_attr_fan1_input.dev_attr.attr, | |
747 | &sensor_dev_attr_fan2_input.dev_attr.attr, | |
748 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
749 | &sensor_dev_attr_fan2_min.dev_attr.attr, | |
750 | &sensor_dev_attr_fan1_div.dev_attr.attr, | |
751 | &sensor_dev_attr_fan2_div.dev_attr.attr, | |
2d1374ca JD |
752 | &sensor_dev_attr_fan1_alarm.dev_attr.attr, |
753 | &sensor_dev_attr_fan2_alarm.dev_attr.attr, | |
cbeeb5b7 | 754 | &dev_attr_alarms.attr, |
ec5e1a4b | 755 | &dev_attr_name.attr, |
cbeeb5b7 RL |
756 | NULL |
757 | }; | |
758 | ||
759 | static const struct attribute_group vt8231_group = { | |
760 | .attrs = vt8231_attributes, | |
761 | }; | |
762 | ||
ec5e1a4b | 763 | static struct platform_driver vt8231_driver = { |
cdaf7934 | 764 | .driver = { |
cdaf7934 LR |
765 | .name = "vt8231", |
766 | }, | |
ec5e1a4b | 767 | .probe = vt8231_probe, |
9e5e9b7a | 768 | .remove = vt8231_remove, |
1de9e371 RL |
769 | }; |
770 | ||
cd9bb056 | 771 | static const struct pci_device_id vt8231_pci_ids[] = { |
1de9e371 RL |
772 | { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231_4) }, |
773 | { 0, } | |
774 | }; | |
775 | ||
776 | MODULE_DEVICE_TABLE(pci, vt8231_pci_ids); | |
777 | ||
6c931ae1 | 778 | static int vt8231_pci_probe(struct pci_dev *dev, |
65fe5c79 | 779 | const struct pci_device_id *id); |
1de9e371 RL |
780 | |
781 | static struct pci_driver vt8231_pci_driver = { | |
782 | .name = "vt8231", | |
783 | .id_table = vt8231_pci_ids, | |
784 | .probe = vt8231_pci_probe, | |
785 | }; | |
786 | ||
a022fef5 | 787 | static int vt8231_probe(struct platform_device *pdev) |
1de9e371 | 788 | { |
ec5e1a4b | 789 | struct resource *res; |
1de9e371 RL |
790 | struct vt8231_data *data; |
791 | int err = 0, i; | |
1de9e371 RL |
792 | |
793 | /* Reserve the ISA region */ | |
ec5e1a4b | 794 | res = platform_get_resource(pdev, IORESOURCE_IO, 0); |
7711f1bd GR |
795 | if (!devm_request_region(&pdev->dev, res->start, VT8231_EXTENT, |
796 | vt8231_driver.driver.name)) { | |
ec5e1a4b RL |
797 | dev_err(&pdev->dev, "Region 0x%lx-0x%lx already in use!\n", |
798 | (unsigned long)res->start, (unsigned long)res->end); | |
1de9e371 RL |
799 | return -ENODEV; |
800 | } | |
801 | ||
7711f1bd GR |
802 | data = devm_kzalloc(&pdev->dev, sizeof(struct vt8231_data), GFP_KERNEL); |
803 | if (!data) | |
804 | return -ENOMEM; | |
1de9e371 | 805 | |
ec5e1a4b RL |
806 | platform_set_drvdata(pdev, data); |
807 | data->addr = res->start; | |
808 | data->name = "vt8231"; | |
1de9e371 | 809 | |
9a61bf63 | 810 | mutex_init(&data->update_lock); |
ec5e1a4b | 811 | vt8231_init_device(data); |
1de9e371 RL |
812 | |
813 | /* Register sysfs hooks */ | |
65fe5c79 GR |
814 | err = sysfs_create_group(&pdev->dev.kobj, &vt8231_group); |
815 | if (err) | |
7711f1bd | 816 | return err; |
1de9e371 RL |
817 | |
818 | /* Must update device information to find out the config field */ | |
ec5e1a4b | 819 | data->uch_config = vt8231_read_value(data, VT8231_REG_UCH_CONFIG); |
1de9e371 | 820 | |
cbeeb5b7 | 821 | for (i = 0; i < ARRAY_SIZE(vt8231_group_temps); i++) { |
1de9e371 | 822 | if (ISTEMP(i, data->uch_config)) { |
65fe5c79 GR |
823 | err = sysfs_create_group(&pdev->dev.kobj, |
824 | &vt8231_group_temps[i]); | |
825 | if (err) | |
cbeeb5b7 | 826 | goto exit_remove_files; |
1de9e371 RL |
827 | } |
828 | } | |
829 | ||
cbeeb5b7 | 830 | for (i = 0; i < ARRAY_SIZE(vt8231_group_volts); i++) { |
1de9e371 | 831 | if (ISVOLT(i, data->uch_config)) { |
65fe5c79 GR |
832 | err = sysfs_create_group(&pdev->dev.kobj, |
833 | &vt8231_group_volts[i]); | |
834 | if (err) | |
cbeeb5b7 | 835 | goto exit_remove_files; |
1de9e371 RL |
836 | } |
837 | } | |
838 | ||
1beeffe4 TJ |
839 | data->hwmon_dev = hwmon_device_register(&pdev->dev); |
840 | if (IS_ERR(data->hwmon_dev)) { | |
841 | err = PTR_ERR(data->hwmon_dev); | |
cbeeb5b7 RL |
842 | goto exit_remove_files; |
843 | } | |
1de9e371 RL |
844 | return 0; |
845 | ||
cbeeb5b7 RL |
846 | exit_remove_files: |
847 | for (i = 0; i < ARRAY_SIZE(vt8231_group_volts); i++) | |
ec5e1a4b | 848 | sysfs_remove_group(&pdev->dev.kobj, &vt8231_group_volts[i]); |
cbeeb5b7 RL |
849 | |
850 | for (i = 0; i < ARRAY_SIZE(vt8231_group_temps); i++) | |
ec5e1a4b RL |
851 | sysfs_remove_group(&pdev->dev.kobj, &vt8231_group_temps[i]); |
852 | ||
853 | sysfs_remove_group(&pdev->dev.kobj, &vt8231_group); | |
1de9e371 RL |
854 | return err; |
855 | } | |
856 | ||
281dfd0b | 857 | static int vt8231_remove(struct platform_device *pdev) |
1de9e371 | 858 | { |
ec5e1a4b RL |
859 | struct vt8231_data *data = platform_get_drvdata(pdev); |
860 | int i; | |
1de9e371 | 861 | |
1beeffe4 | 862 | hwmon_device_unregister(data->hwmon_dev); |
1de9e371 | 863 | |
cbeeb5b7 | 864 | for (i = 0; i < ARRAY_SIZE(vt8231_group_volts); i++) |
ec5e1a4b | 865 | sysfs_remove_group(&pdev->dev.kobj, &vt8231_group_volts[i]); |
cbeeb5b7 RL |
866 | |
867 | for (i = 0; i < ARRAY_SIZE(vt8231_group_temps); i++) | |
ec5e1a4b | 868 | sysfs_remove_group(&pdev->dev.kobj, &vt8231_group_temps[i]); |
cbeeb5b7 | 869 | |
ec5e1a4b | 870 | sysfs_remove_group(&pdev->dev.kobj, &vt8231_group); |
cbeeb5b7 | 871 | |
1de9e371 RL |
872 | return 0; |
873 | } | |
874 | ||
ec5e1a4b | 875 | static void vt8231_init_device(struct vt8231_data *data) |
1de9e371 | 876 | { |
ec5e1a4b RL |
877 | vt8231_write_value(data, VT8231_REG_TEMP1_CONFIG, 0); |
878 | vt8231_write_value(data, VT8231_REG_TEMP2_CONFIG, 0); | |
1de9e371 RL |
879 | } |
880 | ||
881 | static struct vt8231_data *vt8231_update_device(struct device *dev) | |
882 | { | |
ec5e1a4b | 883 | struct vt8231_data *data = dev_get_drvdata(dev); |
1de9e371 RL |
884 | int i; |
885 | u16 low; | |
886 | ||
9a61bf63 | 887 | mutex_lock(&data->update_lock); |
1de9e371 RL |
888 | |
889 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) | |
890 | || !data->valid) { | |
891 | for (i = 0; i < 6; i++) { | |
892 | if (ISVOLT(i, data->uch_config)) { | |
ec5e1a4b | 893 | data->in[i] = vt8231_read_value(data, |
1de9e371 | 894 | regvolt[i]); |
ec5e1a4b | 895 | data->in_min[i] = vt8231_read_value(data, |
1de9e371 | 896 | regvoltmin[i]); |
ec5e1a4b | 897 | data->in_max[i] = vt8231_read_value(data, |
1de9e371 RL |
898 | regvoltmax[i]); |
899 | } | |
900 | } | |
901 | for (i = 0; i < 2; i++) { | |
ec5e1a4b | 902 | data->fan[i] = vt8231_read_value(data, |
1de9e371 | 903 | VT8231_REG_FAN(i)); |
ec5e1a4b | 904 | data->fan_min[i] = vt8231_read_value(data, |
1de9e371 RL |
905 | VT8231_REG_FAN_MIN(i)); |
906 | } | |
907 | ||
ec5e1a4b | 908 | low = vt8231_read_value(data, VT8231_REG_TEMP_LOW01); |
1de9e371 | 909 | low = (low >> 6) | ((low & 0x30) >> 2) |
ec5e1a4b | 910 | | (vt8231_read_value(data, VT8231_REG_TEMP_LOW25) << 4); |
1de9e371 RL |
911 | for (i = 0; i < 6; i++) { |
912 | if (ISTEMP(i, data->uch_config)) { | |
ec5e1a4b | 913 | data->temp[i] = (vt8231_read_value(data, |
1de9e371 RL |
914 | regtemp[i]) << 2) |
915 | | ((low >> (2 * i)) & 0x03); | |
ec5e1a4b | 916 | data->temp_max[i] = vt8231_read_value(data, |
1de9e371 | 917 | regtempmax[i]); |
ec5e1a4b | 918 | data->temp_min[i] = vt8231_read_value(data, |
1de9e371 RL |
919 | regtempmin[i]); |
920 | } | |
921 | } | |
922 | ||
ec5e1a4b | 923 | i = vt8231_read_value(data, VT8231_REG_FANDIV); |
1de9e371 RL |
924 | data->fan_div[0] = (i >> 4) & 0x03; |
925 | data->fan_div[1] = i >> 6; | |
ec5e1a4b RL |
926 | data->alarms = vt8231_read_value(data, VT8231_REG_ALARM1) | |
927 | (vt8231_read_value(data, VT8231_REG_ALARM2) << 8); | |
1de9e371 RL |
928 | |
929 | /* Set alarm flags correctly */ | |
65fe5c79 | 930 | if (!data->fan[0] && data->fan_min[0]) |
1de9e371 | 931 | data->alarms |= 0x40; |
65fe5c79 | 932 | else if (data->fan[0] && !data->fan_min[0]) |
1de9e371 | 933 | data->alarms &= ~0x40; |
1de9e371 | 934 | |
65fe5c79 | 935 | if (!data->fan[1] && data->fan_min[1]) |
1de9e371 | 936 | data->alarms |= 0x80; |
65fe5c79 | 937 | else if (data->fan[1] && !data->fan_min[1]) |
1de9e371 | 938 | data->alarms &= ~0x80; |
1de9e371 RL |
939 | |
940 | data->last_updated = jiffies; | |
941 | data->valid = 1; | |
942 | } | |
943 | ||
9a61bf63 | 944 | mutex_unlock(&data->update_lock); |
1de9e371 RL |
945 | |
946 | return data; | |
947 | } | |
948 | ||
6c931ae1 | 949 | static int vt8231_device_add(unsigned short address) |
ec5e1a4b RL |
950 | { |
951 | struct resource res = { | |
952 | .start = address, | |
953 | .end = address + VT8231_EXTENT - 1, | |
954 | .name = "vt8231", | |
955 | .flags = IORESOURCE_IO, | |
956 | }; | |
957 | int err; | |
958 | ||
b9acb64a JD |
959 | err = acpi_check_resource_conflict(&res); |
960 | if (err) | |
961 | goto exit; | |
962 | ||
ec5e1a4b RL |
963 | pdev = platform_device_alloc("vt8231", address); |
964 | if (!pdev) { | |
965 | err = -ENOMEM; | |
9d72be0d | 966 | pr_err("Device allocation failed\n"); |
ec5e1a4b RL |
967 | goto exit; |
968 | } | |
969 | ||
970 | err = platform_device_add_resources(pdev, &res, 1); | |
971 | if (err) { | |
9d72be0d | 972 | pr_err("Device resource addition failed (%d)\n", err); |
ec5e1a4b RL |
973 | goto exit_device_put; |
974 | } | |
975 | ||
976 | err = platform_device_add(pdev); | |
977 | if (err) { | |
9d72be0d | 978 | pr_err("Device addition failed (%d)\n", err); |
ec5e1a4b RL |
979 | goto exit_device_put; |
980 | } | |
981 | ||
982 | return 0; | |
983 | ||
984 | exit_device_put: | |
985 | platform_device_put(pdev); | |
986 | exit: | |
987 | return err; | |
988 | } | |
989 | ||
6c931ae1 | 990 | static int vt8231_pci_probe(struct pci_dev *dev, |
1de9e371 RL |
991 | const struct pci_device_id *id) |
992 | { | |
ec5e1a4b RL |
993 | u16 address, val; |
994 | if (force_addr) { | |
995 | address = force_addr & 0xff00; | |
996 | dev_warn(&dev->dev, "Forcing ISA address 0x%x\n", | |
997 | address); | |
998 | ||
999 | if (PCIBIOS_SUCCESSFUL != | |
1000 | pci_write_config_word(dev, VT8231_BASE_REG, address | 1)) | |
1001 | return -ENODEV; | |
1002 | } | |
1de9e371 RL |
1003 | |
1004 | if (PCIBIOS_SUCCESSFUL != pci_read_config_word(dev, VT8231_BASE_REG, | |
1005 | &val)) | |
1006 | return -ENODEV; | |
1007 | ||
ec5e1a4b RL |
1008 | address = val & ~(VT8231_EXTENT - 1); |
1009 | if (address == 0) { | |
4cae7878 | 1010 | dev_err(&dev->dev, "base address not set - upgrade BIOS or use force_addr=0xaddr\n"); |
1de9e371 RL |
1011 | return -ENODEV; |
1012 | } | |
1013 | ||
ec5e1a4b RL |
1014 | if (PCIBIOS_SUCCESSFUL != pci_read_config_word(dev, VT8231_ENABLE_REG, |
1015 | &val)) | |
1016 | return -ENODEV; | |
1de9e371 | 1017 | |
ec5e1a4b RL |
1018 | if (!(val & 0x0001)) { |
1019 | dev_warn(&dev->dev, "enabling sensors\n"); | |
1020 | if (PCIBIOS_SUCCESSFUL != | |
1021 | pci_write_config_word(dev, VT8231_ENABLE_REG, | |
1022 | val | 0x0001)) | |
1023 | return -ENODEV; | |
1de9e371 RL |
1024 | } |
1025 | ||
ec5e1a4b RL |
1026 | if (platform_driver_register(&vt8231_driver)) |
1027 | goto exit; | |
1028 | ||
1029 | /* Sets global pdev as a side effect */ | |
1030 | if (vt8231_device_add(address)) | |
1031 | goto exit_unregister; | |
1032 | ||
61ba0318 GR |
1033 | /* |
1034 | * Always return failure here. This is to allow other drivers to bind | |
1de9e371 RL |
1035 | * to this pci device. We don't really want to have control over the |
1036 | * pci device, we only wanted to read as few register values from it. | |
1037 | */ | |
ec5e1a4b | 1038 | |
61ba0318 GR |
1039 | /* |
1040 | * We do, however, mark ourselves as using the PCI device to stop it | |
1041 | * getting unloaded. | |
1042 | */ | |
ec5e1a4b RL |
1043 | s_bridge = pci_dev_get(dev); |
1044 | return -ENODEV; | |
1045 | ||
1046 | exit_unregister: | |
1047 | platform_driver_unregister(&vt8231_driver); | |
1048 | exit: | |
1de9e371 RL |
1049 | return -ENODEV; |
1050 | } | |
1051 | ||
1052 | static int __init sm_vt8231_init(void) | |
1053 | { | |
93b47684 | 1054 | return pci_register_driver(&vt8231_pci_driver); |
1de9e371 RL |
1055 | } |
1056 | ||
1057 | static void __exit sm_vt8231_exit(void) | |
1058 | { | |
1059 | pci_unregister_driver(&vt8231_pci_driver); | |
1060 | if (s_bridge != NULL) { | |
ec5e1a4b RL |
1061 | platform_device_unregister(pdev); |
1062 | platform_driver_unregister(&vt8231_driver); | |
1de9e371 RL |
1063 | pci_dev_put(s_bridge); |
1064 | s_bridge = NULL; | |
1065 | } | |
1066 | } | |
1067 | ||
af865765 | 1068 | MODULE_AUTHOR("Roger Lucas <vt8231@hiddenengine.co.uk>"); |
1de9e371 RL |
1069 | MODULE_DESCRIPTION("VT8231 sensors"); |
1070 | MODULE_LICENSE("GPL"); | |
1071 | ||
1072 | module_init(sm_vt8231_init); | |
1073 | module_exit(sm_vt8231_exit); |