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1 | /* |
2 | vt8231.c - Part of lm_sensors, Linux kernel modules | |
3 | for hardware monitoring | |
4 | ||
5 | Copyright (c) 2005 Roger Lucas <roger@planbit.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 | */ | |
23 | ||
24 | /* Supports VIA VT8231 South Bridge embedded sensors | |
25 | */ | |
26 | ||
27 | #include <linux/module.h> | |
28 | #include <linux/init.h> | |
29 | #include <linux/slab.h> | |
30 | #include <linux/pci.h> | |
31 | #include <linux/jiffies.h> | |
ec5e1a4b | 32 | #include <linux/platform_device.h> |
1de9e371 RL |
33 | #include <linux/hwmon.h> |
34 | #include <linux/hwmon-sysfs.h> | |
35 | #include <linux/hwmon-vid.h> | |
36 | #include <linux/err.h> | |
9a61bf63 | 37 | #include <linux/mutex.h> |
1de9e371 RL |
38 | #include <asm/io.h> |
39 | ||
40 | static int force_addr; | |
41 | module_param(force_addr, int, 0); | |
42 | MODULE_PARM_DESC(force_addr, "Initialize the base address of the sensors"); | |
43 | ||
ec5e1a4b | 44 | static struct platform_device *pdev; |
1de9e371 RL |
45 | |
46 | #define VT8231_EXTENT 0x80 | |
47 | #define VT8231_BASE_REG 0x70 | |
48 | #define VT8231_ENABLE_REG 0x74 | |
49 | ||
50 | /* The VT8231 registers | |
51 | ||
52 | The reset value for the input channel configuration is used (Reg 0x4A=0x07) | |
53 | which sets the selected inputs marked with '*' below if multiple options are | |
54 | possible: | |
55 | ||
56 | Voltage Mode Temperature Mode | |
57 | Sensor Linux Id Linux Id VIA Id | |
58 | -------- -------- -------- ------ | |
59 | CPU Diode N/A temp1 0 | |
60 | UIC1 in0 temp2 * 1 | |
61 | UIC2 in1 * temp3 2 | |
62 | UIC3 in2 * temp4 3 | |
63 | UIC4 in3 * temp5 4 | |
64 | UIC5 in4 * temp6 5 | |
65 | 3.3V in5 N/A | |
66 | ||
67 | Note that the BIOS may set the configuration register to a different value | |
68 | to match the motherboard configuration. | |
69 | */ | |
70 | ||
71 | /* fans numbered 0-1 */ | |
72 | #define VT8231_REG_FAN_MIN(nr) (0x3b + (nr)) | |
73 | #define VT8231_REG_FAN(nr) (0x29 + (nr)) | |
74 | ||
75 | /* Voltage inputs numbered 0-5 */ | |
76 | ||
77 | static const u8 regvolt[] = { 0x21, 0x22, 0x23, 0x24, 0x25, 0x26 }; | |
78 | static const u8 regvoltmax[] = { 0x3d, 0x2b, 0x2d, 0x2f, 0x31, 0x33 }; | |
79 | static const u8 regvoltmin[] = { 0x3e, 0x2c, 0x2e, 0x30, 0x32, 0x34 }; | |
80 | ||
81 | /* Temperatures are numbered 1-6 according to the Linux kernel specification. | |
82 | ** | |
83 | ** In the VIA datasheet, however, the temperatures are numbered from zero. | |
84 | ** Since it is important that this driver can easily be compared to the VIA | |
85 | ** datasheet, we will use the VIA numbering within this driver and map the | |
86 | ** kernel sysfs device name to the VIA number in the sysfs callback. | |
87 | */ | |
88 | ||
89 | #define VT8231_REG_TEMP_LOW01 0x49 | |
90 | #define VT8231_REG_TEMP_LOW25 0x4d | |
91 | ||
92 | static const u8 regtemp[] = { 0x1f, 0x21, 0x22, 0x23, 0x24, 0x25 }; | |
93 | static const u8 regtempmax[] = { 0x39, 0x3d, 0x2b, 0x2d, 0x2f, 0x31 }; | |
94 | static const u8 regtempmin[] = { 0x3a, 0x3e, 0x2c, 0x2e, 0x30, 0x32 }; | |
95 | ||
96 | #define TEMP_FROM_REG(reg) (((253 * 4 - (reg)) * 550 + 105) / 210) | |
97 | #define TEMP_MAXMIN_FROM_REG(reg) (((253 - (reg)) * 2200 + 105) / 210) | |
98 | #define TEMP_MAXMIN_TO_REG(val) (253 - ((val) * 210 + 1100) / 2200) | |
99 | ||
100 | #define VT8231_REG_CONFIG 0x40 | |
101 | #define VT8231_REG_ALARM1 0x41 | |
102 | #define VT8231_REG_ALARM2 0x42 | |
103 | #define VT8231_REG_FANDIV 0x47 | |
104 | #define VT8231_REG_UCH_CONFIG 0x4a | |
105 | #define VT8231_REG_TEMP1_CONFIG 0x4b | |
106 | #define VT8231_REG_TEMP2_CONFIG 0x4c | |
107 | ||
108 | /* temps 0-5 as numbered in VIA datasheet - see later for mapping to Linux | |
109 | ** numbering | |
110 | */ | |
111 | #define ISTEMP(i, ch_config) ((i) == 0 ? 1 : \ | |
112 | ((ch_config) >> ((i)+1)) & 0x01) | |
113 | /* voltages 0-5 */ | |
114 | #define ISVOLT(i, ch_config) ((i) == 5 ? 1 : \ | |
115 | !(((ch_config) >> ((i)+2)) & 0x01)) | |
116 | ||
117 | #define DIV_FROM_REG(val) (1 << (val)) | |
118 | ||
119 | /* NB The values returned here are NOT temperatures. The calibration curves | |
120 | ** for the thermistor curves are board-specific and must go in the | |
121 | ** sensors.conf file. Temperature sensors are actually ten bits, but the | |
122 | ** VIA datasheet only considers the 8 MSBs obtained from the regtemp[] | |
123 | ** register. The temperature value returned should have a magnitude of 3, | |
124 | ** so we use the VIA scaling as the "true" scaling and use the remaining 2 | |
125 | ** LSBs as fractional precision. | |
126 | ** | |
127 | ** All the on-chip hardware temperature comparisons for the alarms are only | |
128 | ** 8-bits wide, and compare against the 8 MSBs of the temperature. The bits | |
129 | ** in the registers VT8231_REG_TEMP_LOW01 and VT8231_REG_TEMP_LOW25 are | |
130 | ** ignored. | |
131 | */ | |
132 | ||
133 | /******** FAN RPM CONVERSIONS ******** | |
134 | ** This chip saturates back at 0, not at 255 like many the other chips. | |
135 | ** So, 0 means 0 RPM | |
136 | */ | |
137 | static inline u8 FAN_TO_REG(long rpm, int div) | |
138 | { | |
139 | if (rpm == 0) | |
140 | return 0; | |
141 | return SENSORS_LIMIT(1310720 / (rpm * div), 1, 255); | |
142 | } | |
143 | ||
144 | #define FAN_FROM_REG(val, div) ((val) == 0 ? 0 : 1310720 / ((val) * (div))) | |
145 | ||
146 | struct vt8231_data { | |
ec5e1a4b RL |
147 | unsigned short addr; |
148 | const char *name; | |
149 | ||
9a61bf63 | 150 | struct mutex update_lock; |
1beeffe4 | 151 | struct device *hwmon_dev; |
1de9e371 RL |
152 | char valid; /* !=0 if following fields are valid */ |
153 | unsigned long last_updated; /* In jiffies */ | |
154 | ||
155 | u8 in[6]; /* Register value */ | |
156 | u8 in_max[6]; /* Register value */ | |
157 | u8 in_min[6]; /* Register value */ | |
158 | u16 temp[6]; /* Register value 10 bit, right aligned */ | |
159 | u8 temp_max[6]; /* Register value */ | |
160 | u8 temp_min[6]; /* Register value */ | |
161 | u8 fan[2]; /* Register value */ | |
162 | u8 fan_min[2]; /* Register value */ | |
163 | u8 fan_div[2]; /* Register encoding, shifted right */ | |
164 | u16 alarms; /* Register encoding */ | |
165 | u8 uch_config; | |
166 | }; | |
167 | ||
168 | static struct pci_dev *s_bridge; | |
ec5e1a4b | 169 | static int vt8231_probe(struct platform_device *pdev); |
d0546128 | 170 | static int __devexit vt8231_remove(struct platform_device *pdev); |
1de9e371 | 171 | static struct vt8231_data *vt8231_update_device(struct device *dev); |
ec5e1a4b | 172 | static void vt8231_init_device(struct vt8231_data *data); |
1de9e371 | 173 | |
ec5e1a4b | 174 | static inline int vt8231_read_value(struct vt8231_data *data, u8 reg) |
1de9e371 | 175 | { |
ec5e1a4b | 176 | return inb_p(data->addr + reg); |
1de9e371 RL |
177 | } |
178 | ||
ec5e1a4b | 179 | static inline void vt8231_write_value(struct vt8231_data *data, u8 reg, |
1de9e371 RL |
180 | u8 value) |
181 | { | |
ec5e1a4b | 182 | outb_p(value, data->addr + reg); |
1de9e371 RL |
183 | } |
184 | ||
185 | /* following are the sysfs callback functions */ | |
186 | static ssize_t show_in(struct device *dev, struct device_attribute *attr, | |
187 | char *buf) | |
188 | { | |
189 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
190 | int nr = sensor_attr->index; | |
191 | struct vt8231_data *data = vt8231_update_device(dev); | |
192 | ||
193 | return sprintf(buf, "%d\n", ((data->in[nr] - 3) * 10000) / 958); | |
194 | } | |
195 | ||
196 | static ssize_t show_in_min(struct device *dev, struct device_attribute *attr, | |
197 | char *buf) | |
198 | { | |
199 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
200 | int nr = sensor_attr->index; | |
201 | struct vt8231_data *data = vt8231_update_device(dev); | |
202 | ||
203 | return sprintf(buf, "%d\n", ((data->in_min[nr] - 3) * 10000) / 958); | |
204 | } | |
205 | ||
206 | static ssize_t show_in_max(struct device *dev, struct device_attribute *attr, | |
207 | char *buf) | |
208 | { | |
209 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
210 | int nr = sensor_attr->index; | |
211 | struct vt8231_data *data = vt8231_update_device(dev); | |
212 | ||
213 | return sprintf(buf, "%d\n", (((data->in_max[nr] - 3) * 10000) / 958)); | |
214 | } | |
215 | ||
216 | static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, | |
217 | const char *buf, size_t count) | |
218 | { | |
219 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
220 | int nr = sensor_attr->index; | |
ec5e1a4b | 221 | struct vt8231_data *data = dev_get_drvdata(dev); |
1de9e371 RL |
222 | unsigned long val = simple_strtoul(buf, NULL, 10); |
223 | ||
9a61bf63 | 224 | mutex_lock(&data->update_lock); |
1de9e371 | 225 | data->in_min[nr] = SENSORS_LIMIT(((val * 958) / 10000) + 3, 0, 255); |
ec5e1a4b | 226 | vt8231_write_value(data, regvoltmin[nr], data->in_min[nr]); |
9a61bf63 | 227 | mutex_unlock(&data->update_lock); |
1de9e371 RL |
228 | return count; |
229 | } | |
230 | ||
231 | static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, | |
232 | const char *buf, size_t count) | |
233 | { | |
234 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
235 | int nr = sensor_attr->index; | |
ec5e1a4b | 236 | struct vt8231_data *data = dev_get_drvdata(dev); |
1de9e371 RL |
237 | unsigned long val = simple_strtoul(buf, NULL, 10); |
238 | ||
9a61bf63 | 239 | mutex_lock(&data->update_lock); |
1de9e371 | 240 | data->in_max[nr] = SENSORS_LIMIT(((val * 958) / 10000) + 3, 0, 255); |
ec5e1a4b | 241 | vt8231_write_value(data, regvoltmax[nr], data->in_max[nr]); |
9a61bf63 | 242 | mutex_unlock(&data->update_lock); |
1de9e371 RL |
243 | return count; |
244 | } | |
245 | ||
246 | /* Special case for input 5 as this has 3.3V scaling built into the chip */ | |
247 | static ssize_t show_in5(struct device *dev, struct device_attribute *attr, | |
248 | char *buf) | |
249 | { | |
250 | struct vt8231_data *data = vt8231_update_device(dev); | |
251 | ||
252 | return sprintf(buf, "%d\n", | |
253 | (((data->in[5] - 3) * 10000 * 54) / (958 * 34))); | |
254 | } | |
255 | ||
256 | static ssize_t show_in5_min(struct device *dev, struct device_attribute *attr, | |
257 | char *buf) | |
258 | { | |
259 | struct vt8231_data *data = vt8231_update_device(dev); | |
260 | ||
261 | return sprintf(buf, "%d\n", | |
262 | (((data->in_min[5] - 3) * 10000 * 54) / (958 * 34))); | |
263 | } | |
264 | ||
265 | static ssize_t show_in5_max(struct device *dev, struct device_attribute *attr, | |
266 | char *buf) | |
267 | { | |
268 | struct vt8231_data *data = vt8231_update_device(dev); | |
269 | ||
270 | return sprintf(buf, "%d\n", | |
271 | (((data->in_max[5] - 3) * 10000 * 54) / (958 * 34))); | |
272 | } | |
273 | ||
274 | static ssize_t set_in5_min(struct device *dev, struct device_attribute *attr, | |
275 | const char *buf, size_t count) | |
276 | { | |
ec5e1a4b | 277 | struct vt8231_data *data = dev_get_drvdata(dev); |
1de9e371 RL |
278 | unsigned long val = simple_strtoul(buf, NULL, 10); |
279 | ||
9a61bf63 | 280 | mutex_lock(&data->update_lock); |
1de9e371 RL |
281 | data->in_min[5] = SENSORS_LIMIT(((val * 958 * 34) / (10000 * 54)) + 3, |
282 | 0, 255); | |
ec5e1a4b | 283 | vt8231_write_value(data, regvoltmin[5], data->in_min[5]); |
9a61bf63 | 284 | mutex_unlock(&data->update_lock); |
1de9e371 RL |
285 | return count; |
286 | } | |
287 | ||
288 | static ssize_t set_in5_max(struct device *dev, struct device_attribute *attr, | |
289 | const char *buf, size_t count) | |
290 | { | |
ec5e1a4b | 291 | struct vt8231_data *data = dev_get_drvdata(dev); |
1de9e371 RL |
292 | unsigned long val = simple_strtoul(buf, NULL, 10); |
293 | ||
9a61bf63 | 294 | mutex_lock(&data->update_lock); |
1de9e371 RL |
295 | data->in_max[5] = SENSORS_LIMIT(((val * 958 * 34) / (10000 * 54)) + 3, |
296 | 0, 255); | |
ec5e1a4b | 297 | vt8231_write_value(data, regvoltmax[5], data->in_max[5]); |
9a61bf63 | 298 | mutex_unlock(&data->update_lock); |
1de9e371 RL |
299 | return count; |
300 | } | |
301 | ||
302 | #define define_voltage_sysfs(offset) \ | |
303 | static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ | |
304 | show_in, NULL, offset); \ | |
305 | static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ | |
306 | show_in_min, set_in_min, offset); \ | |
307 | static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ | |
308 | show_in_max, set_in_max, offset) | |
309 | ||
310 | define_voltage_sysfs(0); | |
311 | define_voltage_sysfs(1); | |
312 | define_voltage_sysfs(2); | |
313 | define_voltage_sysfs(3); | |
314 | define_voltage_sysfs(4); | |
315 | ||
316 | static DEVICE_ATTR(in5_input, S_IRUGO, show_in5, NULL); | |
317 | static DEVICE_ATTR(in5_min, S_IRUGO | S_IWUSR, show_in5_min, set_in5_min); | |
318 | static DEVICE_ATTR(in5_max, S_IRUGO | S_IWUSR, show_in5_max, set_in5_max); | |
319 | ||
320 | /* Temperatures */ | |
321 | static ssize_t show_temp0(struct device *dev, struct device_attribute *attr, | |
322 | char *buf) | |
323 | { | |
324 | struct vt8231_data *data = vt8231_update_device(dev); | |
325 | return sprintf(buf, "%d\n", data->temp[0] * 250); | |
326 | } | |
327 | ||
328 | static ssize_t show_temp0_max(struct device *dev, struct device_attribute *attr, | |
329 | char *buf) | |
330 | { | |
331 | struct vt8231_data *data = vt8231_update_device(dev); | |
332 | return sprintf(buf, "%d\n", data->temp_max[0] * 1000); | |
333 | } | |
334 | ||
335 | static ssize_t show_temp0_min(struct device *dev, struct device_attribute *attr, | |
336 | char *buf) | |
337 | { | |
338 | struct vt8231_data *data = vt8231_update_device(dev); | |
339 | return sprintf(buf, "%d\n", data->temp_min[0] * 1000); | |
340 | } | |
341 | ||
342 | static ssize_t set_temp0_max(struct device *dev, struct device_attribute *attr, | |
343 | const char *buf, size_t count) | |
344 | { | |
ec5e1a4b | 345 | struct vt8231_data *data = dev_get_drvdata(dev); |
1de9e371 RL |
346 | int val = simple_strtol(buf, NULL, 10); |
347 | ||
9a61bf63 | 348 | mutex_lock(&data->update_lock); |
1de9e371 | 349 | data->temp_max[0] = SENSORS_LIMIT((val + 500) / 1000, 0, 255); |
ec5e1a4b | 350 | vt8231_write_value(data, regtempmax[0], data->temp_max[0]); |
9a61bf63 | 351 | mutex_unlock(&data->update_lock); |
1de9e371 RL |
352 | return count; |
353 | } | |
354 | static ssize_t set_temp0_min(struct device *dev, struct device_attribute *attr, | |
355 | const char *buf, size_t count) | |
356 | { | |
ec5e1a4b | 357 | struct vt8231_data *data = dev_get_drvdata(dev); |
1de9e371 RL |
358 | int val = simple_strtol(buf, NULL, 10); |
359 | ||
9a61bf63 | 360 | mutex_lock(&data->update_lock); |
1de9e371 | 361 | data->temp_min[0] = SENSORS_LIMIT((val + 500) / 1000, 0, 255); |
ec5e1a4b | 362 | vt8231_write_value(data, regtempmin[0], data->temp_min[0]); |
9a61bf63 | 363 | mutex_unlock(&data->update_lock); |
1de9e371 RL |
364 | return count; |
365 | } | |
366 | ||
367 | static ssize_t show_temp(struct device *dev, struct device_attribute *attr, | |
368 | char *buf) | |
369 | { | |
370 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
371 | int nr = sensor_attr->index; | |
372 | struct vt8231_data *data = vt8231_update_device(dev); | |
373 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr])); | |
374 | } | |
375 | ||
376 | static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr, | |
377 | char *buf) | |
378 | { | |
379 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
380 | int nr = sensor_attr->index; | |
381 | struct vt8231_data *data = vt8231_update_device(dev); | |
382 | return sprintf(buf, "%d\n", TEMP_MAXMIN_FROM_REG(data->temp_max[nr])); | |
383 | } | |
384 | ||
385 | static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr, | |
386 | char *buf) | |
387 | { | |
388 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
389 | int nr = sensor_attr->index; | |
390 | struct vt8231_data *data = vt8231_update_device(dev); | |
391 | return sprintf(buf, "%d\n", TEMP_MAXMIN_FROM_REG(data->temp_min[nr])); | |
392 | } | |
393 | ||
394 | static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, | |
395 | const char *buf, size_t count) | |
396 | { | |
397 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
398 | int nr = sensor_attr->index; | |
ec5e1a4b | 399 | struct vt8231_data *data = dev_get_drvdata(dev); |
1de9e371 RL |
400 | int val = simple_strtol(buf, NULL, 10); |
401 | ||
9a61bf63 | 402 | mutex_lock(&data->update_lock); |
1de9e371 | 403 | data->temp_max[nr] = SENSORS_LIMIT(TEMP_MAXMIN_TO_REG(val), 0, 255); |
ec5e1a4b | 404 | vt8231_write_value(data, regtempmax[nr], data->temp_max[nr]); |
9a61bf63 | 405 | mutex_unlock(&data->update_lock); |
1de9e371 RL |
406 | return count; |
407 | } | |
408 | static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr, | |
409 | const char *buf, size_t count) | |
410 | { | |
411 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
412 | int nr = sensor_attr->index; | |
ec5e1a4b | 413 | struct vt8231_data *data = dev_get_drvdata(dev); |
1de9e371 RL |
414 | int val = simple_strtol(buf, NULL, 10); |
415 | ||
9a61bf63 | 416 | mutex_lock(&data->update_lock); |
1de9e371 | 417 | data->temp_min[nr] = SENSORS_LIMIT(TEMP_MAXMIN_TO_REG(val), 0, 255); |
ec5e1a4b | 418 | vt8231_write_value(data, regtempmin[nr], data->temp_min[nr]); |
9a61bf63 | 419 | mutex_unlock(&data->update_lock); |
1de9e371 RL |
420 | return count; |
421 | } | |
422 | ||
423 | /* Note that these map the Linux temperature sensor numbering (1-6) to the VIA | |
424 | ** temperature sensor numbering (0-5) | |
425 | */ | |
426 | #define define_temperature_sysfs(offset) \ | |
427 | static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ | |
428 | show_temp, NULL, offset - 1); \ | |
429 | static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ | |
430 | show_temp_max, set_temp_max, offset - 1); \ | |
e3efa5a7 | 431 | static SENSOR_DEVICE_ATTR(temp##offset##_max_hyst, S_IRUGO | S_IWUSR, \ |
1de9e371 RL |
432 | show_temp_min, set_temp_min, offset - 1) |
433 | ||
434 | static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp0, NULL); | |
435 | static DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR, show_temp0_max, set_temp0_max); | |
e3efa5a7 | 436 | static DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, show_temp0_min, set_temp0_min); |
1de9e371 RL |
437 | |
438 | define_temperature_sysfs(2); | |
439 | define_temperature_sysfs(3); | |
440 | define_temperature_sysfs(4); | |
441 | define_temperature_sysfs(5); | |
442 | define_temperature_sysfs(6); | |
443 | ||
1de9e371 RL |
444 | /* Fans */ |
445 | static ssize_t show_fan(struct device *dev, struct device_attribute *attr, | |
446 | char *buf) | |
447 | { | |
448 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
449 | int nr = sensor_attr->index; | |
450 | struct vt8231_data *data = vt8231_update_device(dev); | |
451 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr], | |
452 | DIV_FROM_REG(data->fan_div[nr]))); | |
453 | } | |
454 | ||
455 | static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr, | |
456 | char *buf) | |
457 | { | |
458 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
459 | int nr = sensor_attr->index; | |
460 | struct vt8231_data *data = vt8231_update_device(dev); | |
461 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr], | |
462 | DIV_FROM_REG(data->fan_div[nr]))); | |
463 | } | |
464 | ||
465 | static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr, | |
466 | char *buf) | |
467 | { | |
468 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
469 | int nr = sensor_attr->index; | |
470 | struct vt8231_data *data = vt8231_update_device(dev); | |
471 | return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr])); | |
472 | } | |
473 | ||
474 | static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, | |
475 | const char *buf, size_t count) | |
476 | { | |
477 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
478 | int nr = sensor_attr->index; | |
ec5e1a4b | 479 | struct vt8231_data *data = dev_get_drvdata(dev); |
1de9e371 RL |
480 | int val = simple_strtoul(buf, NULL, 10); |
481 | ||
9a61bf63 | 482 | mutex_lock(&data->update_lock); |
1de9e371 | 483 | data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); |
ec5e1a4b | 484 | vt8231_write_value(data, VT8231_REG_FAN_MIN(nr), data->fan_min[nr]); |
9a61bf63 | 485 | mutex_unlock(&data->update_lock); |
1de9e371 RL |
486 | return count; |
487 | } | |
488 | ||
489 | static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, | |
490 | const char *buf, size_t count) | |
491 | { | |
ec5e1a4b | 492 | struct vt8231_data *data = dev_get_drvdata(dev); |
1de9e371 RL |
493 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
494 | unsigned long val = simple_strtoul(buf, NULL, 10); | |
495 | int nr = sensor_attr->index; | |
ec5e1a4b | 496 | int old = vt8231_read_value(data, VT8231_REG_FANDIV); |
1de9e371 RL |
497 | long min = FAN_FROM_REG(data->fan_min[nr], |
498 | DIV_FROM_REG(data->fan_div[nr])); | |
499 | ||
9a61bf63 | 500 | mutex_lock(&data->update_lock); |
1de9e371 RL |
501 | switch (val) { |
502 | case 1: data->fan_div[nr] = 0; break; | |
503 | case 2: data->fan_div[nr] = 1; break; | |
504 | case 4: data->fan_div[nr] = 2; break; | |
505 | case 8: data->fan_div[nr] = 3; break; | |
506 | default: | |
ec5e1a4b | 507 | dev_err(dev, "fan_div value %ld not supported." |
1de9e371 | 508 | "Choose one of 1, 2, 4 or 8!\n", val); |
9a61bf63 | 509 | mutex_unlock(&data->update_lock); |
1de9e371 RL |
510 | return -EINVAL; |
511 | } | |
512 | ||
513 | /* Correct the fan minimum speed */ | |
514 | data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); | |
ec5e1a4b | 515 | vt8231_write_value(data, VT8231_REG_FAN_MIN(nr), data->fan_min[nr]); |
1de9e371 RL |
516 | |
517 | old = (old & 0x0f) | (data->fan_div[1] << 6) | (data->fan_div[0] << 4); | |
ec5e1a4b | 518 | vt8231_write_value(data, VT8231_REG_FANDIV, old); |
9a61bf63 | 519 | mutex_unlock(&data->update_lock); |
1de9e371 RL |
520 | return count; |
521 | } | |
522 | ||
523 | ||
524 | #define define_fan_sysfs(offset) \ | |
525 | static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ | |
526 | show_fan, NULL, offset - 1); \ | |
527 | static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ | |
528 | show_fan_div, set_fan_div, offset - 1); \ | |
529 | static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ | |
530 | show_fan_min, set_fan_min, offset - 1) | |
531 | ||
532 | define_fan_sysfs(1); | |
533 | define_fan_sysfs(2); | |
534 | ||
535 | /* Alarms */ | |
536 | static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, | |
537 | char *buf) | |
538 | { | |
539 | struct vt8231_data *data = vt8231_update_device(dev); | |
540 | return sprintf(buf, "%d\n", data->alarms); | |
541 | } | |
1de9e371 RL |
542 | static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); |
543 | ||
ec5e1a4b RL |
544 | static ssize_t show_name(struct device *dev, struct device_attribute |
545 | *devattr, char *buf) | |
546 | { | |
547 | struct vt8231_data *data = dev_get_drvdata(dev); | |
548 | return sprintf(buf, "%s\n", data->name); | |
549 | } | |
550 | static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); | |
551 | ||
cbeeb5b7 RL |
552 | static struct attribute *vt8231_attributes_temps[6][4] = { |
553 | { | |
554 | &dev_attr_temp1_input.attr, | |
555 | &dev_attr_temp1_max_hyst.attr, | |
556 | &dev_attr_temp1_max.attr, | |
557 | NULL | |
558 | }, { | |
559 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
560 | &sensor_dev_attr_temp2_max_hyst.dev_attr.attr, | |
561 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
562 | NULL | |
563 | }, { | |
564 | &sensor_dev_attr_temp3_input.dev_attr.attr, | |
565 | &sensor_dev_attr_temp3_max_hyst.dev_attr.attr, | |
566 | &sensor_dev_attr_temp3_max.dev_attr.attr, | |
567 | NULL | |
568 | }, { | |
569 | &sensor_dev_attr_temp4_input.dev_attr.attr, | |
570 | &sensor_dev_attr_temp4_max_hyst.dev_attr.attr, | |
571 | &sensor_dev_attr_temp4_max.dev_attr.attr, | |
572 | NULL | |
573 | }, { | |
574 | &sensor_dev_attr_temp5_input.dev_attr.attr, | |
575 | &sensor_dev_attr_temp5_max_hyst.dev_attr.attr, | |
576 | &sensor_dev_attr_temp5_max.dev_attr.attr, | |
577 | NULL | |
578 | }, { | |
579 | &sensor_dev_attr_temp6_input.dev_attr.attr, | |
580 | &sensor_dev_attr_temp6_max_hyst.dev_attr.attr, | |
581 | &sensor_dev_attr_temp6_max.dev_attr.attr, | |
582 | NULL | |
583 | } | |
584 | }; | |
585 | ||
586 | static const struct attribute_group vt8231_group_temps[6] = { | |
587 | { .attrs = vt8231_attributes_temps[0] }, | |
588 | { .attrs = vt8231_attributes_temps[1] }, | |
589 | { .attrs = vt8231_attributes_temps[2] }, | |
590 | { .attrs = vt8231_attributes_temps[3] }, | |
591 | { .attrs = vt8231_attributes_temps[4] }, | |
592 | { .attrs = vt8231_attributes_temps[5] }, | |
593 | }; | |
594 | ||
595 | static struct attribute *vt8231_attributes_volts[6][4] = { | |
596 | { | |
597 | &sensor_dev_attr_in0_input.dev_attr.attr, | |
598 | &sensor_dev_attr_in0_min.dev_attr.attr, | |
599 | &sensor_dev_attr_in0_max.dev_attr.attr, | |
600 | NULL | |
601 | }, { | |
602 | &sensor_dev_attr_in1_input.dev_attr.attr, | |
603 | &sensor_dev_attr_in1_min.dev_attr.attr, | |
604 | &sensor_dev_attr_in1_max.dev_attr.attr, | |
605 | NULL | |
606 | }, { | |
607 | &sensor_dev_attr_in2_input.dev_attr.attr, | |
608 | &sensor_dev_attr_in2_min.dev_attr.attr, | |
609 | &sensor_dev_attr_in2_max.dev_attr.attr, | |
610 | NULL | |
611 | }, { | |
612 | &sensor_dev_attr_in3_input.dev_attr.attr, | |
613 | &sensor_dev_attr_in3_min.dev_attr.attr, | |
614 | &sensor_dev_attr_in3_max.dev_attr.attr, | |
615 | NULL | |
616 | }, { | |
617 | &sensor_dev_attr_in4_input.dev_attr.attr, | |
618 | &sensor_dev_attr_in4_min.dev_attr.attr, | |
619 | &sensor_dev_attr_in4_max.dev_attr.attr, | |
620 | NULL | |
621 | }, { | |
622 | &dev_attr_in5_input.attr, | |
623 | &dev_attr_in5_min.attr, | |
624 | &dev_attr_in5_max.attr, | |
625 | NULL | |
626 | } | |
627 | }; | |
628 | ||
629 | static const struct attribute_group vt8231_group_volts[6] = { | |
630 | { .attrs = vt8231_attributes_volts[0] }, | |
631 | { .attrs = vt8231_attributes_volts[1] }, | |
632 | { .attrs = vt8231_attributes_volts[2] }, | |
633 | { .attrs = vt8231_attributes_volts[3] }, | |
634 | { .attrs = vt8231_attributes_volts[4] }, | |
635 | { .attrs = vt8231_attributes_volts[5] }, | |
636 | }; | |
637 | ||
638 | static struct attribute *vt8231_attributes[] = { | |
639 | &sensor_dev_attr_fan1_input.dev_attr.attr, | |
640 | &sensor_dev_attr_fan2_input.dev_attr.attr, | |
641 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
642 | &sensor_dev_attr_fan2_min.dev_attr.attr, | |
643 | &sensor_dev_attr_fan1_div.dev_attr.attr, | |
644 | &sensor_dev_attr_fan2_div.dev_attr.attr, | |
645 | &dev_attr_alarms.attr, | |
ec5e1a4b | 646 | &dev_attr_name.attr, |
cbeeb5b7 RL |
647 | NULL |
648 | }; | |
649 | ||
650 | static const struct attribute_group vt8231_group = { | |
651 | .attrs = vt8231_attributes, | |
652 | }; | |
653 | ||
ec5e1a4b | 654 | static struct platform_driver vt8231_driver = { |
cdaf7934 | 655 | .driver = { |
87218842 | 656 | .owner = THIS_MODULE, |
cdaf7934 LR |
657 | .name = "vt8231", |
658 | }, | |
ec5e1a4b RL |
659 | .probe = vt8231_probe, |
660 | .remove = __devexit_p(vt8231_remove), | |
1de9e371 RL |
661 | }; |
662 | ||
663 | static struct pci_device_id vt8231_pci_ids[] = { | |
664 | { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231_4) }, | |
665 | { 0, } | |
666 | }; | |
667 | ||
668 | MODULE_DEVICE_TABLE(pci, vt8231_pci_ids); | |
669 | ||
670 | static int __devinit vt8231_pci_probe(struct pci_dev *dev, | |
671 | const struct pci_device_id *id); | |
672 | ||
673 | static struct pci_driver vt8231_pci_driver = { | |
674 | .name = "vt8231", | |
675 | .id_table = vt8231_pci_ids, | |
676 | .probe = vt8231_pci_probe, | |
677 | }; | |
678 | ||
ec5e1a4b | 679 | int vt8231_probe(struct platform_device *pdev) |
1de9e371 | 680 | { |
ec5e1a4b | 681 | struct resource *res; |
1de9e371 RL |
682 | struct vt8231_data *data; |
683 | int err = 0, i; | |
1de9e371 RL |
684 | |
685 | /* Reserve the ISA region */ | |
ec5e1a4b RL |
686 | res = platform_get_resource(pdev, IORESOURCE_IO, 0); |
687 | if (!request_region(res->start, VT8231_EXTENT, | |
688 | vt8231_driver.driver.name)) { | |
689 | dev_err(&pdev->dev, "Region 0x%lx-0x%lx already in use!\n", | |
690 | (unsigned long)res->start, (unsigned long)res->end); | |
1de9e371 RL |
691 | return -ENODEV; |
692 | } | |
693 | ||
694 | if (!(data = kzalloc(sizeof(struct vt8231_data), GFP_KERNEL))) { | |
695 | err = -ENOMEM; | |
696 | goto exit_release; | |
697 | } | |
698 | ||
ec5e1a4b RL |
699 | platform_set_drvdata(pdev, data); |
700 | data->addr = res->start; | |
701 | data->name = "vt8231"; | |
1de9e371 | 702 | |
9a61bf63 | 703 | mutex_init(&data->update_lock); |
ec5e1a4b | 704 | vt8231_init_device(data); |
1de9e371 RL |
705 | |
706 | /* Register sysfs hooks */ | |
ec5e1a4b RL |
707 | if ((err = sysfs_create_group(&pdev->dev.kobj, &vt8231_group))) |
708 | goto exit_free; | |
1de9e371 RL |
709 | |
710 | /* Must update device information to find out the config field */ | |
ec5e1a4b | 711 | data->uch_config = vt8231_read_value(data, VT8231_REG_UCH_CONFIG); |
1de9e371 | 712 | |
cbeeb5b7 | 713 | for (i = 0; i < ARRAY_SIZE(vt8231_group_temps); i++) { |
1de9e371 | 714 | if (ISTEMP(i, data->uch_config)) { |
ec5e1a4b | 715 | if ((err = sysfs_create_group(&pdev->dev.kobj, |
cbeeb5b7 RL |
716 | &vt8231_group_temps[i]))) |
717 | goto exit_remove_files; | |
1de9e371 RL |
718 | } |
719 | } | |
720 | ||
cbeeb5b7 | 721 | for (i = 0; i < ARRAY_SIZE(vt8231_group_volts); i++) { |
1de9e371 | 722 | if (ISVOLT(i, data->uch_config)) { |
ec5e1a4b | 723 | if ((err = sysfs_create_group(&pdev->dev.kobj, |
cbeeb5b7 RL |
724 | &vt8231_group_volts[i]))) |
725 | goto exit_remove_files; | |
1de9e371 RL |
726 | } |
727 | } | |
728 | ||
1beeffe4 TJ |
729 | data->hwmon_dev = hwmon_device_register(&pdev->dev); |
730 | if (IS_ERR(data->hwmon_dev)) { | |
731 | err = PTR_ERR(data->hwmon_dev); | |
cbeeb5b7 RL |
732 | goto exit_remove_files; |
733 | } | |
1de9e371 RL |
734 | return 0; |
735 | ||
cbeeb5b7 RL |
736 | exit_remove_files: |
737 | for (i = 0; i < ARRAY_SIZE(vt8231_group_volts); i++) | |
ec5e1a4b | 738 | sysfs_remove_group(&pdev->dev.kobj, &vt8231_group_volts[i]); |
cbeeb5b7 RL |
739 | |
740 | for (i = 0; i < ARRAY_SIZE(vt8231_group_temps); i++) | |
ec5e1a4b RL |
741 | sysfs_remove_group(&pdev->dev.kobj, &vt8231_group_temps[i]); |
742 | ||
743 | sysfs_remove_group(&pdev->dev.kobj, &vt8231_group); | |
cbeeb5b7 | 744 | |
1de9e371 | 745 | exit_free: |
04a6217d | 746 | platform_set_drvdata(pdev, NULL); |
1de9e371 | 747 | kfree(data); |
ec5e1a4b | 748 | |
1de9e371 | 749 | exit_release: |
ec5e1a4b | 750 | release_region(res->start, VT8231_EXTENT); |
1de9e371 RL |
751 | return err; |
752 | } | |
753 | ||
d0546128 | 754 | static int __devexit vt8231_remove(struct platform_device *pdev) |
1de9e371 | 755 | { |
ec5e1a4b RL |
756 | struct vt8231_data *data = platform_get_drvdata(pdev); |
757 | int i; | |
1de9e371 | 758 | |
1beeffe4 | 759 | hwmon_device_unregister(data->hwmon_dev); |
1de9e371 | 760 | |
cbeeb5b7 | 761 | for (i = 0; i < ARRAY_SIZE(vt8231_group_volts); i++) |
ec5e1a4b | 762 | sysfs_remove_group(&pdev->dev.kobj, &vt8231_group_volts[i]); |
cbeeb5b7 RL |
763 | |
764 | for (i = 0; i < ARRAY_SIZE(vt8231_group_temps); i++) | |
ec5e1a4b | 765 | sysfs_remove_group(&pdev->dev.kobj, &vt8231_group_temps[i]); |
cbeeb5b7 | 766 | |
ec5e1a4b | 767 | sysfs_remove_group(&pdev->dev.kobj, &vt8231_group); |
cbeeb5b7 | 768 | |
ec5e1a4b RL |
769 | release_region(data->addr, VT8231_EXTENT); |
770 | platform_set_drvdata(pdev, NULL); | |
1de9e371 | 771 | kfree(data); |
1de9e371 RL |
772 | return 0; |
773 | } | |
774 | ||
ec5e1a4b | 775 | static void vt8231_init_device(struct vt8231_data *data) |
1de9e371 | 776 | { |
ec5e1a4b RL |
777 | vt8231_write_value(data, VT8231_REG_TEMP1_CONFIG, 0); |
778 | vt8231_write_value(data, VT8231_REG_TEMP2_CONFIG, 0); | |
1de9e371 RL |
779 | } |
780 | ||
781 | static struct vt8231_data *vt8231_update_device(struct device *dev) | |
782 | { | |
ec5e1a4b | 783 | struct vt8231_data *data = dev_get_drvdata(dev); |
1de9e371 RL |
784 | int i; |
785 | u16 low; | |
786 | ||
9a61bf63 | 787 | mutex_lock(&data->update_lock); |
1de9e371 RL |
788 | |
789 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) | |
790 | || !data->valid) { | |
791 | for (i = 0; i < 6; i++) { | |
792 | if (ISVOLT(i, data->uch_config)) { | |
ec5e1a4b | 793 | data->in[i] = vt8231_read_value(data, |
1de9e371 | 794 | regvolt[i]); |
ec5e1a4b | 795 | data->in_min[i] = vt8231_read_value(data, |
1de9e371 | 796 | regvoltmin[i]); |
ec5e1a4b | 797 | data->in_max[i] = vt8231_read_value(data, |
1de9e371 RL |
798 | regvoltmax[i]); |
799 | } | |
800 | } | |
801 | for (i = 0; i < 2; i++) { | |
ec5e1a4b | 802 | data->fan[i] = vt8231_read_value(data, |
1de9e371 | 803 | VT8231_REG_FAN(i)); |
ec5e1a4b | 804 | data->fan_min[i] = vt8231_read_value(data, |
1de9e371 RL |
805 | VT8231_REG_FAN_MIN(i)); |
806 | } | |
807 | ||
ec5e1a4b | 808 | low = vt8231_read_value(data, VT8231_REG_TEMP_LOW01); |
1de9e371 | 809 | low = (low >> 6) | ((low & 0x30) >> 2) |
ec5e1a4b | 810 | | (vt8231_read_value(data, VT8231_REG_TEMP_LOW25) << 4); |
1de9e371 RL |
811 | for (i = 0; i < 6; i++) { |
812 | if (ISTEMP(i, data->uch_config)) { | |
ec5e1a4b | 813 | data->temp[i] = (vt8231_read_value(data, |
1de9e371 RL |
814 | regtemp[i]) << 2) |
815 | | ((low >> (2 * i)) & 0x03); | |
ec5e1a4b | 816 | data->temp_max[i] = vt8231_read_value(data, |
1de9e371 | 817 | regtempmax[i]); |
ec5e1a4b | 818 | data->temp_min[i] = vt8231_read_value(data, |
1de9e371 RL |
819 | regtempmin[i]); |
820 | } | |
821 | } | |
822 | ||
ec5e1a4b | 823 | i = vt8231_read_value(data, VT8231_REG_FANDIV); |
1de9e371 RL |
824 | data->fan_div[0] = (i >> 4) & 0x03; |
825 | data->fan_div[1] = i >> 6; | |
ec5e1a4b RL |
826 | data->alarms = vt8231_read_value(data, VT8231_REG_ALARM1) | |
827 | (vt8231_read_value(data, VT8231_REG_ALARM2) << 8); | |
1de9e371 RL |
828 | |
829 | /* Set alarm flags correctly */ | |
830 | if (!data->fan[0] && data->fan_min[0]) { | |
831 | data->alarms |= 0x40; | |
832 | } else if (data->fan[0] && !data->fan_min[0]) { | |
833 | data->alarms &= ~0x40; | |
834 | } | |
835 | ||
836 | if (!data->fan[1] && data->fan_min[1]) { | |
837 | data->alarms |= 0x80; | |
838 | } else if (data->fan[1] && !data->fan_min[1]) { | |
839 | data->alarms &= ~0x80; | |
840 | } | |
841 | ||
842 | data->last_updated = jiffies; | |
843 | data->valid = 1; | |
844 | } | |
845 | ||
9a61bf63 | 846 | mutex_unlock(&data->update_lock); |
1de9e371 RL |
847 | |
848 | return data; | |
849 | } | |
850 | ||
ec5e1a4b RL |
851 | static int __devinit vt8231_device_add(unsigned short address) |
852 | { | |
853 | struct resource res = { | |
854 | .start = address, | |
855 | .end = address + VT8231_EXTENT - 1, | |
856 | .name = "vt8231", | |
857 | .flags = IORESOURCE_IO, | |
858 | }; | |
859 | int err; | |
860 | ||
861 | pdev = platform_device_alloc("vt8231", address); | |
862 | if (!pdev) { | |
863 | err = -ENOMEM; | |
864 | printk(KERN_ERR "vt8231: Device allocation failed\n"); | |
865 | goto exit; | |
866 | } | |
867 | ||
868 | err = platform_device_add_resources(pdev, &res, 1); | |
869 | if (err) { | |
870 | printk(KERN_ERR "vt8231: Device resource addition failed " | |
871 | "(%d)\n", err); | |
872 | goto exit_device_put; | |
873 | } | |
874 | ||
875 | err = platform_device_add(pdev); | |
876 | if (err) { | |
877 | printk(KERN_ERR "vt8231: Device addition failed (%d)\n", | |
878 | err); | |
879 | goto exit_device_put; | |
880 | } | |
881 | ||
882 | return 0; | |
883 | ||
884 | exit_device_put: | |
885 | platform_device_put(pdev); | |
886 | exit: | |
887 | return err; | |
888 | } | |
889 | ||
1de9e371 RL |
890 | static int __devinit vt8231_pci_probe(struct pci_dev *dev, |
891 | const struct pci_device_id *id) | |
892 | { | |
ec5e1a4b RL |
893 | u16 address, val; |
894 | if (force_addr) { | |
895 | address = force_addr & 0xff00; | |
896 | dev_warn(&dev->dev, "Forcing ISA address 0x%x\n", | |
897 | address); | |
898 | ||
899 | if (PCIBIOS_SUCCESSFUL != | |
900 | pci_write_config_word(dev, VT8231_BASE_REG, address | 1)) | |
901 | return -ENODEV; | |
902 | } | |
1de9e371 RL |
903 | |
904 | if (PCIBIOS_SUCCESSFUL != pci_read_config_word(dev, VT8231_BASE_REG, | |
905 | &val)) | |
906 | return -ENODEV; | |
907 | ||
ec5e1a4b RL |
908 | address = val & ~(VT8231_EXTENT - 1); |
909 | if (address == 0) { | |
1de9e371 RL |
910 | dev_err(&dev->dev, "base address not set -\ |
911 | upgrade BIOS or use force_addr=0xaddr\n"); | |
912 | return -ENODEV; | |
913 | } | |
914 | ||
ec5e1a4b RL |
915 | if (PCIBIOS_SUCCESSFUL != pci_read_config_word(dev, VT8231_ENABLE_REG, |
916 | &val)) | |
917 | return -ENODEV; | |
1de9e371 | 918 | |
ec5e1a4b RL |
919 | if (!(val & 0x0001)) { |
920 | dev_warn(&dev->dev, "enabling sensors\n"); | |
921 | if (PCIBIOS_SUCCESSFUL != | |
922 | pci_write_config_word(dev, VT8231_ENABLE_REG, | |
923 | val | 0x0001)) | |
924 | return -ENODEV; | |
1de9e371 RL |
925 | } |
926 | ||
ec5e1a4b RL |
927 | if (platform_driver_register(&vt8231_driver)) |
928 | goto exit; | |
929 | ||
930 | /* Sets global pdev as a side effect */ | |
931 | if (vt8231_device_add(address)) | |
932 | goto exit_unregister; | |
933 | ||
1de9e371 RL |
934 | /* Always return failure here. This is to allow other drivers to bind |
935 | * to this pci device. We don't really want to have control over the | |
936 | * pci device, we only wanted to read as few register values from it. | |
937 | */ | |
ec5e1a4b RL |
938 | |
939 | /* We do, however, mark ourselves as using the PCI device to stop it | |
940 | getting unloaded. */ | |
941 | s_bridge = pci_dev_get(dev); | |
942 | return -ENODEV; | |
943 | ||
944 | exit_unregister: | |
945 | platform_driver_unregister(&vt8231_driver); | |
946 | exit: | |
1de9e371 RL |
947 | return -ENODEV; |
948 | } | |
949 | ||
950 | static int __init sm_vt8231_init(void) | |
951 | { | |
93b47684 | 952 | return pci_register_driver(&vt8231_pci_driver); |
1de9e371 RL |
953 | } |
954 | ||
955 | static void __exit sm_vt8231_exit(void) | |
956 | { | |
957 | pci_unregister_driver(&vt8231_pci_driver); | |
958 | if (s_bridge != NULL) { | |
ec5e1a4b RL |
959 | platform_device_unregister(pdev); |
960 | platform_driver_unregister(&vt8231_driver); | |
1de9e371 RL |
961 | pci_dev_put(s_bridge); |
962 | s_bridge = NULL; | |
963 | } | |
964 | } | |
965 | ||
966 | MODULE_AUTHOR("Roger Lucas <roger@planbit.co.uk>"); | |
967 | MODULE_DESCRIPTION("VT8231 sensors"); | |
968 | MODULE_LICENSE("GPL"); | |
969 | ||
970 | module_init(sm_vt8231_init); | |
971 | module_exit(sm_vt8231_exit); |