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[cor_2_6_31.git] / drivers / hwmon / vt1211.c
blob73f77a9b8b188fb15840beea34d5f2f07a8d8a4f
1 /*
2 * vt1211.c - driver for the VIA VT1211 Super-I/O chip integrated hardware
3 * monitoring features
4 * Copyright (C) 2006 Juerg Haefliger <juergh@gmail.com>
5 *
6 * This driver is based on the driver for kernel 2.4 by Mark D. Studebaker
7 * and its port to kernel 2.6 by Lars Ekman.
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 #include <linux/module.h>
25 #include <linux/init.h>
26 #include <linux/slab.h>
27 #include <linux/jiffies.h>
28 #include <linux/platform_device.h>
29 #include <linux/hwmon.h>
30 #include <linux/hwmon-sysfs.h>
31 #include <linux/hwmon-vid.h>
32 #include <linux/err.h>
33 #include <linux/mutex.h>
34 #include <linux/ioport.h>
35 #include <linux/acpi.h>
36 #include <asm/io.h>
37
38 static int uch_config = -1;
39 module_param(uch_config, int, 0);
40 MODULE_PARM_DESC(uch_config, "Initialize the universal channel configuration");
41
42 static int int_mode = -1;
43 module_param(int_mode, int, 0);
44 MODULE_PARM_DESC(int_mode, "Force the temperature interrupt mode");
45
46 static unsigned short force_id;
47 module_param(force_id, ushort, 0);
48 MODULE_PARM_DESC(force_id, "Override the detected device ID");
49
50 static struct platform_device *pdev;
51
52 #define DRVNAME "vt1211"
53
54 /* ---------------------------------------------------------------------
55 * Registers
56 *
57 * The sensors are defined as follows.
58 *
59 * Sensor Voltage Mode Temp Mode Notes (from the datasheet)
60 * -------- ------------ --------- --------------------------
61 * Reading 1 temp1 Intel thermal diode
62 * Reading 3 temp2 Internal thermal diode
63 * UCH1/Reading2 in0 temp3 NTC type thermistor
64 * UCH2 in1 temp4 +2.5V
65 * UCH3 in2 temp5 VccP
66 * UCH4 in3 temp6 +5V
67 * UCH5 in4 temp7 +12V
68 * 3.3V in5 Internal VDD (+3.3V)
69 *
70 * --------------------------------------------------------------------- */
71
72 /* Voltages (in) numbered 0-5 (ix) */
73 #define VT1211_REG_IN(ix) (0x21 + (ix))
74 #define VT1211_REG_IN_MIN(ix) ((ix) == 0 ? 0x3e : 0x2a + 2 * (ix))
75 #define VT1211_REG_IN_MAX(ix) ((ix) == 0 ? 0x3d : 0x29 + 2 * (ix))
76
77 /* Temperatures (temp) numbered 0-6 (ix) */
78 static u8 regtemp[] = {0x1f, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25};
79 static u8 regtempmax[] = {0x39, 0x1d, 0x3d, 0x2b, 0x2d, 0x2f, 0x31};
80 static u8 regtemphyst[] = {0x3a, 0x1e, 0x3e, 0x2c, 0x2e, 0x30, 0x32};
81
82 /* Fans numbered 0-1 (ix) */
83 #define VT1211_REG_FAN(ix) (0x29 + (ix))
84 #define VT1211_REG_FAN_MIN(ix) (0x3b + (ix))
85 #define VT1211_REG_FAN_DIV 0x47
86
87 /* PWMs numbered 0-1 (ix) */
88 /* Auto points numbered 0-3 (ap) */
89 #define VT1211_REG_PWM(ix) (0x60 + (ix))
90 #define VT1211_REG_PWM_CLK 0x50
91 #define VT1211_REG_PWM_CTL 0x51
92 #define VT1211_REG_PWM_AUTO_TEMP(ap) (0x55 - (ap))
93 #define VT1211_REG_PWM_AUTO_PWM(ix, ap) (0x58 + 2 * (ix) - (ap))
94
95 /* Miscellaneous registers */
96 #define VT1211_REG_CONFIG 0x40
97 #define VT1211_REG_ALARM1 0x41
98 #define VT1211_REG_ALARM2 0x42
99 #define VT1211_REG_VID 0x45
100 #define VT1211_REG_UCH_CONFIG 0x4a
101 #define VT1211_REG_TEMP1_CONFIG 0x4b
102 #define VT1211_REG_TEMP2_CONFIG 0x4c
103
104 /* In, temp & fan alarm bits */
105 static const u8 bitalarmin[] = {11, 0, 1, 3, 8, 2, 9};
106 static const u8 bitalarmtemp[] = {4, 15, 11, 0, 1, 3, 8};
107 static const u8 bitalarmfan[] = {6, 7};
108
109 /* ---------------------------------------------------------------------
110 * Data structures and manipulation thereof
111 * --------------------------------------------------------------------- */
112
113 struct vt1211_data {
114 unsigned short addr;
115 const char *name;
116 struct device *hwmon_dev;
117
118 struct mutex update_lock;
119 char valid; /* !=0 if following fields are valid */
120 unsigned long last_updated; /* In jiffies */
121
122 /* Register values */
123 u8 in[6];
124 u8 in_max[6];
125 u8 in_min[6];
126 u8 temp[7];
127 u8 temp_max[7];
128 u8 temp_hyst[7];
129 u8 fan[2];
130 u8 fan_min[2];
131 u8 fan_div[2];
132 u8 fan_ctl;
133 u8 pwm[2];
134 u8 pwm_ctl[2];
135 u8 pwm_clk;
136 u8 pwm_auto_temp[4];
137 u8 pwm_auto_pwm[2][4];
138 u8 vid; /* Read once at init time */
139 u8 vrm;
140 u8 uch_config; /* Read once at init time */
141 u16 alarms;
142 };
143
144 /* ix = [0-5] */
145 #define ISVOLT(ix, uch_config) ((ix) > 4 ? 1 : \
146 !(((uch_config) >> ((ix) + 2)) & 1))
147
148 /* ix = [0-6] */
149 #define ISTEMP(ix, uch_config) ((ix) < 2 ? 1 : \
150 ((uch_config) >> (ix)) & 1)
151
152 /* in5 (ix = 5) is special. It's the internal 3.3V so it's scaled in the
153 driver according to the VT1211 BIOS porting guide */
154 #define IN_FROM_REG(ix, reg) ((reg) < 3 ? 0 : (ix) == 5 ? \
155 (((reg) - 3) * 15882 + 479) / 958 : \
156 (((reg) - 3) * 10000 + 479) / 958)
157 #define IN_TO_REG(ix, val) (SENSORS_LIMIT((ix) == 5 ? \
158 ((val) * 958 + 7941) / 15882 + 3 : \
159 ((val) * 958 + 5000) / 10000 + 3, 0, 255))
160
161 /* temp1 (ix = 0) is an intel thermal diode which is scaled in user space.
162 temp2 (ix = 1) is the internal temp diode so it's scaled in the driver
163 according to some measurements that I took on an EPIA M10000.
164 temp3-7 are thermistor based so the driver returns the voltage measured at
165 the pin (range 0V - 2.2V). */
166 #define TEMP_FROM_REG(ix, reg) ((ix) == 0 ? (reg) * 1000 : \
167 (ix) == 1 ? (reg) < 51 ? 0 : \
168 ((reg) - 51) * 1000 : \
169 ((253 - (reg)) * 2200 + 105) / 210)
170 #define TEMP_TO_REG(ix, val) SENSORS_LIMIT( \
171 ((ix) == 0 ? ((val) + 500) / 1000 : \
172 (ix) == 1 ? ((val) + 500) / 1000 + 51 : \
173 253 - ((val) * 210 + 1100) / 2200), 0, 255)
174
175 #define DIV_FROM_REG(reg) (1 << (reg))
176
177 #define RPM_FROM_REG(reg, div) (((reg) == 0) || ((reg) == 255) ? 0 : \
178 1310720 / (reg) / DIV_FROM_REG(div))
179 #define RPM_TO_REG(val, div) ((val) == 0 ? 255 : \
180 SENSORS_LIMIT((1310720 / (val) / \
181 DIV_FROM_REG(div)), 1, 254))
182
183 /* ---------------------------------------------------------------------
184 * Super-I/O constants and functions
185 * --------------------------------------------------------------------- */
186
187 /* Configuration index port registers
188 * The vt1211 can live at 2 different addresses so we need to probe both */
189 #define SIO_REG_CIP1 0x2e
190 #define SIO_REG_CIP2 0x4e
191
192 /* Configuration registers */
193 #define SIO_VT1211_LDN 0x07 /* logical device number */
194 #define SIO_VT1211_DEVID 0x20 /* device ID */
195 #define SIO_VT1211_DEVREV 0x21 /* device revision */
196 #define SIO_VT1211_ACTIVE 0x30 /* HW monitor active */
197 #define SIO_VT1211_BADDR 0x60 /* base I/O address */
198 #define SIO_VT1211_ID 0x3c /* VT1211 device ID */
199
200 /* VT1211 logical device numbers */
201 #define SIO_VT1211_LDN_HWMON 0x0b /* HW monitor */
202
203 static inline void superio_outb(int sio_cip, int reg, int val)
204 {
205 outb(reg, sio_cip);
206 outb(val, sio_cip + 1);
207 }
208
209 static inline int superio_inb(int sio_cip, int reg)
210 {
211 outb(reg, sio_cip);
212 return inb(sio_cip + 1);
213 }
214
215 static inline void superio_select(int sio_cip, int ldn)
216 {
217 outb(SIO_VT1211_LDN, sio_cip);
218 outb(ldn, sio_cip + 1);
219 }
220
221 static inline void superio_enter(int sio_cip)
222 {
223 outb(0x87, sio_cip);
224 outb(0x87, sio_cip);
225 }
226
227 static inline void superio_exit(int sio_cip)
228 {
229 outb(0xaa, sio_cip);
230 }
231
232 /* ---------------------------------------------------------------------
233 * Device I/O access
234 * --------------------------------------------------------------------- */
235
236 static inline u8 vt1211_read8(struct vt1211_data *data, u8 reg)
237 {
238 return inb(data->addr + reg);
239 }
240
241 static inline void vt1211_write8(struct vt1211_data *data, u8 reg, u8 val)
242 {
243 outb(val, data->addr + reg);
244 }
245
246 static struct vt1211_data *vt1211_update_device(struct device *dev)
247 {
248 struct vt1211_data *data = dev_get_drvdata(dev);
249 int ix, val;
250
251 mutex_lock(&data->update_lock);
252
253 /* registers cache is refreshed after 1 second */
254 if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
255 /* read VID */
256 data->vid = vt1211_read8(data, VT1211_REG_VID) & 0x1f;
257
258 /* voltage (in) registers */
259 for (ix = 0; ix < ARRAY_SIZE(data->in); ix++) {
260 if (ISVOLT(ix, data->uch_config)) {
261 data->in[ix] = vt1211_read8(data,
262 VT1211_REG_IN(ix));
263 data->in_min[ix] = vt1211_read8(data,
264 VT1211_REG_IN_MIN(ix));
265 data->in_max[ix] = vt1211_read8(data,
266 VT1211_REG_IN_MAX(ix));
267 }
268 }
269
270 /* temp registers */
271 for (ix = 0; ix < ARRAY_SIZE(data->temp); ix++) {
272 if (ISTEMP(ix, data->uch_config)) {
273 data->temp[ix] = vt1211_read8(data,
274 regtemp[ix]);
275 data->temp_max[ix] = vt1211_read8(data,
276 regtempmax[ix]);
277 data->temp_hyst[ix] = vt1211_read8(data,
278 regtemphyst[ix]);
279 }
280 }
281
282 /* fan & pwm registers */
283 for (ix = 0; ix < ARRAY_SIZE(data->fan); ix++) {
284 data->fan[ix] = vt1211_read8(data,
285 VT1211_REG_FAN(ix));
286 data->fan_min[ix] = vt1211_read8(data,
287 VT1211_REG_FAN_MIN(ix));
288 data->pwm[ix] = vt1211_read8(data,
289 VT1211_REG_PWM(ix));
290 }
291 val = vt1211_read8(data, VT1211_REG_FAN_DIV);
292 data->fan_div[0] = (val >> 4) & 3;
293 data->fan_div[1] = (val >> 6) & 3;
294 data->fan_ctl = val & 0xf;
295
296 val = vt1211_read8(data, VT1211_REG_PWM_CTL);
297 data->pwm_ctl[0] = val & 0xf;
298 data->pwm_ctl[1] = (val >> 4) & 0xf;
299
300 data->pwm_clk = vt1211_read8(data, VT1211_REG_PWM_CLK);
301
302 /* pwm & temp auto point registers */
303 data->pwm_auto_pwm[0][1] = vt1211_read8(data,
304 VT1211_REG_PWM_AUTO_PWM(0, 1));
305 data->pwm_auto_pwm[0][2] = vt1211_read8(data,
306 VT1211_REG_PWM_AUTO_PWM(0, 2));
307 data->pwm_auto_pwm[1][1] = vt1211_read8(data,
308 VT1211_REG_PWM_AUTO_PWM(1, 1));
309 data->pwm_auto_pwm[1][2] = vt1211_read8(data,
310 VT1211_REG_PWM_AUTO_PWM(1, 2));
311 for (ix = 0; ix < ARRAY_SIZE(data->pwm_auto_temp); ix++) {
312 data->pwm_auto_temp[ix] = vt1211_read8(data,
313 VT1211_REG_PWM_AUTO_TEMP(ix));
314 }
315
316 /* alarm registers */
317 data->alarms = (vt1211_read8(data, VT1211_REG_ALARM2) << 8) |
318 vt1211_read8(data, VT1211_REG_ALARM1);
319
320 data->last_updated = jiffies;
321 data->valid = 1;
322 }
323
324 mutex_unlock(&data->update_lock);
325
326 return data;
327 }
328
329 /* ---------------------------------------------------------------------
330 * Voltage sysfs interfaces
331 * ix = [0-5]
332 * --------------------------------------------------------------------- */
333
334 #define SHOW_IN_INPUT 0
335 #define SHOW_SET_IN_MIN 1
336 #define SHOW_SET_IN_MAX 2
337 #define SHOW_IN_ALARM 3
338
339 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
340 char *buf)
341 {
342 struct vt1211_data *data = vt1211_update_device(dev);
343 struct sensor_device_attribute_2 *sensor_attr_2 =
344 to_sensor_dev_attr_2(attr);
345 int ix = sensor_attr_2->index;
346 int fn = sensor_attr_2->nr;
347 int res;
348
349 switch (fn) {
350 case SHOW_IN_INPUT:
351 res = IN_FROM_REG(ix, data->in[ix]);
352 break;
353 case SHOW_SET_IN_MIN:
354 res = IN_FROM_REG(ix, data->in_min[ix]);
355 break;
356 case SHOW_SET_IN_MAX:
357 res = IN_FROM_REG(ix, data->in_max[ix]);
358 break;
359 case SHOW_IN_ALARM:
360 res = (data->alarms >> bitalarmin[ix]) & 1;
361 break;
362 default:
363 res = 0;
364 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn);
365 }
366
367 return sprintf(buf, "%d\n", res);
368 }
369
370 static ssize_t set_in(struct device *dev, struct device_attribute *attr,
371 const char *buf, size_t count)
372 {
373 struct vt1211_data *data = dev_get_drvdata(dev);
374 struct sensor_device_attribute_2 *sensor_attr_2 =
375 to_sensor_dev_attr_2(attr);
376 int ix = sensor_attr_2->index;
377 int fn = sensor_attr_2->nr;
378 long val = simple_strtol(buf, NULL, 10);
379
380 mutex_lock(&data->update_lock);
381 switch (fn) {
382 case SHOW_SET_IN_MIN:
383 data->in_min[ix] = IN_TO_REG(ix, val);
384 vt1211_write8(data, VT1211_REG_IN_MIN(ix), data->in_min[ix]);
385 break;
386 case SHOW_SET_IN_MAX:
387 data->in_max[ix] = IN_TO_REG(ix, val);
388 vt1211_write8(data, VT1211_REG_IN_MAX(ix), data->in_max[ix]);
389 break;
390 default:
391 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn);
392 }
393 mutex_unlock(&data->update_lock);
394
395 return count;
396 }
397
398 /* ---------------------------------------------------------------------
399 * Temperature sysfs interfaces
400 * ix = [0-6]
401 * --------------------------------------------------------------------- */
402
403 #define SHOW_TEMP_INPUT 0
404 #define SHOW_SET_TEMP_MAX 1
405 #define SHOW_SET_TEMP_MAX_HYST 2
406 #define SHOW_TEMP_ALARM 3
407
408 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
409 char *buf)
410 {
411 struct vt1211_data *data = vt1211_update_device(dev);
412 struct sensor_device_attribute_2 *sensor_attr_2 =
413 to_sensor_dev_attr_2(attr);
414 int ix = sensor_attr_2->index;
415 int fn = sensor_attr_2->nr;
416 int res;
417
418 switch (fn) {
419 case SHOW_TEMP_INPUT:
420 res = TEMP_FROM_REG(ix, data->temp[ix]);
421 break;
422 case SHOW_SET_TEMP_MAX:
423 res = TEMP_FROM_REG(ix, data->temp_max[ix]);
424 break;
425 case SHOW_SET_TEMP_MAX_HYST:
426 res = TEMP_FROM_REG(ix, data->temp_hyst[ix]);
427 break;
428 case SHOW_TEMP_ALARM:
429 res = (data->alarms >> bitalarmtemp[ix]) & 1;
430 break;
431 default:
432 res = 0;
433 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn);
434 }
435
436 return sprintf(buf, "%d\n", res);
437 }
438
439 static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
440 const char *buf, size_t count)
441 {
442 struct vt1211_data *data = dev_get_drvdata(dev);
443 struct sensor_device_attribute_2 *sensor_attr_2 =
444 to_sensor_dev_attr_2(attr);
445 int ix = sensor_attr_2->index;
446 int fn = sensor_attr_2->nr;
447 long val = simple_strtol(buf, NULL, 10);
448
449 mutex_lock(&data->update_lock);
450 switch (fn) {
451 case SHOW_SET_TEMP_MAX:
452 data->temp_max[ix] = TEMP_TO_REG(ix, val);
453 vt1211_write8(data, regtempmax[ix],
454 data->temp_max[ix]);
455 break;
456 case SHOW_SET_TEMP_MAX_HYST:
457 data->temp_hyst[ix] = TEMP_TO_REG(ix, val);
458 vt1211_write8(data, regtemphyst[ix],
459 data->temp_hyst[ix]);
460 break;
461 default:
462 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn);
463 }
464 mutex_unlock(&data->update_lock);
465
466 return count;
467 }
468
469 /* ---------------------------------------------------------------------
470 * Fan sysfs interfaces
471 * ix = [0-1]
472 * --------------------------------------------------------------------- */
473
474 #define SHOW_FAN_INPUT 0
475 #define SHOW_SET_FAN_MIN 1
476 #define SHOW_SET_FAN_DIV 2
477 #define SHOW_FAN_ALARM 3
478
479 static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
480 char *buf)
481 {
482 struct vt1211_data *data = vt1211_update_device(dev);
483 struct sensor_device_attribute_2 *sensor_attr_2 =
484 to_sensor_dev_attr_2(attr);
485 int ix = sensor_attr_2->index;
486 int fn = sensor_attr_2->nr;
487 int res;
488
489 switch (fn) {
490 case SHOW_FAN_INPUT:
491 res = RPM_FROM_REG(data->fan[ix], data->fan_div[ix]);
492 break;
493 case SHOW_SET_FAN_MIN:
494 res = RPM_FROM_REG(data->fan_min[ix], data->fan_div[ix]);
495 break;
496 case SHOW_SET_FAN_DIV:
497 res = DIV_FROM_REG(data->fan_div[ix]);
498 break;
499 case SHOW_FAN_ALARM:
500 res = (data->alarms >> bitalarmfan[ix]) & 1;
501 break;
502 default:
503 res = 0;
504 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn);
505 }
506
507 return sprintf(buf, "%d\n", res);
508 }
509
510 static ssize_t set_fan(struct device *dev, struct device_attribute *attr,
511 const char *buf, size_t count)
512 {
513 struct vt1211_data *data = dev_get_drvdata(dev);
514 struct sensor_device_attribute_2 *sensor_attr_2 =
515 to_sensor_dev_attr_2(attr);
516 int ix = sensor_attr_2->index;
517 int fn = sensor_attr_2->nr;
518 long val = simple_strtol(buf, NULL, 10);
519 int reg;
520
521 mutex_lock(&data->update_lock);
522
523 /* sync the data cache */
524 reg = vt1211_read8(data, VT1211_REG_FAN_DIV);
525 data->fan_div[0] = (reg >> 4) & 3;
526 data->fan_div[1] = (reg >> 6) & 3;
527 data->fan_ctl = reg & 0xf;
528
529 switch (fn) {
530 case SHOW_SET_FAN_MIN:
531 data->fan_min[ix] = RPM_TO_REG(val, data->fan_div[ix]);
532 vt1211_write8(data, VT1211_REG_FAN_MIN(ix),
533 data->fan_min[ix]);
534 break;
535 case SHOW_SET_FAN_DIV:
536 switch (val) {
537 case 1: data->fan_div[ix] = 0; break;
538 case 2: data->fan_div[ix] = 1; break;
539 case 4: data->fan_div[ix] = 2; break;
540 case 8: data->fan_div[ix] = 3; break;
541 default:
542 count = -EINVAL;
543 dev_warn(dev, "fan div value %ld not "
544 "supported. Choose one of 1, 2, "
545 "4, or 8.\n", val);
546 goto EXIT;
547 }
548 vt1211_write8(data, VT1211_REG_FAN_DIV,
549 ((data->fan_div[1] << 6) |
550 (data->fan_div[0] << 4) |
551 data->fan_ctl));
552 break;
553 default:
554 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn);
555 }
556
557 EXIT:
558 mutex_unlock(&data->update_lock);
559 return count;
560 }
561
562 /* ---------------------------------------------------------------------
563 * PWM sysfs interfaces
564 * ix = [0-1]
565 * --------------------------------------------------------------------- */
566
567 #define SHOW_PWM 0
568 #define SHOW_SET_PWM_ENABLE 1
569 #define SHOW_SET_PWM_FREQ 2
570 #define SHOW_SET_PWM_AUTO_CHANNELS_TEMP 3
571
572 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
573 char *buf)
574 {
575 struct vt1211_data *data = vt1211_update_device(dev);
576 struct sensor_device_attribute_2 *sensor_attr_2 =
577 to_sensor_dev_attr_2(attr);
578 int ix = sensor_attr_2->index;
579 int fn = sensor_attr_2->nr;
580 int res;
581
582 switch (fn) {
583 case SHOW_PWM:
584 res = data->pwm[ix];
585 break;
586 case SHOW_SET_PWM_ENABLE:
587 res = ((data->pwm_ctl[ix] >> 3) & 1) ? 2 : 0;
588 break;
589 case SHOW_SET_PWM_FREQ:
590 res = 90000 >> (data->pwm_clk & 7);
591 break;
592 case SHOW_SET_PWM_AUTO_CHANNELS_TEMP:
593 res = (data->pwm_ctl[ix] & 7) + 1;
594 break;
595 default:
596 res = 0;
597 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn);
598 }
599
600 return sprintf(buf, "%d\n", res);
601 }
602
603 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
604 const char *buf, size_t count)
605 {
606 struct vt1211_data *data = dev_get_drvdata(dev);
607 struct sensor_device_attribute_2 *sensor_attr_2 =
608 to_sensor_dev_attr_2(attr);
609 int ix = sensor_attr_2->index;
610 int fn = sensor_attr_2->nr;
611 long val = simple_strtol(buf, NULL, 10);
612 int tmp, reg;
613
614 mutex_lock(&data->update_lock);
615
616 switch (fn) {
617 case SHOW_SET_PWM_ENABLE:
618 /* sync the data cache */
619 reg = vt1211_read8(data, VT1211_REG_FAN_DIV);
620 data->fan_div[0] = (reg >> 4) & 3;
621 data->fan_div[1] = (reg >> 6) & 3;
622 data->fan_ctl = reg & 0xf;
623 reg = vt1211_read8(data, VT1211_REG_PWM_CTL);
624 data->pwm_ctl[0] = reg & 0xf;
625 data->pwm_ctl[1] = (reg >> 4) & 0xf;
626 switch (val) {
627 case 0:
628 data->pwm_ctl[ix] &= 7;
629 /* disable SmartGuardian if both PWM outputs are
630 * disabled */
631 if ((data->pwm_ctl[ix ^ 1] & 1) == 0) {
632 data->fan_ctl &= 0xe;
633 }
634 break;
635 case 2:
636 data->pwm_ctl[ix] |= 8;
637 data->fan_ctl |= 1;
638 break;
639 default:
640 count = -EINVAL;
641 dev_warn(dev, "pwm mode %ld not supported. "
642 "Choose one of 0 or 2.\n", val);
643 goto EXIT;
644 }
645 vt1211_write8(data, VT1211_REG_PWM_CTL,
646 ((data->pwm_ctl[1] << 4) |
647 data->pwm_ctl[0]));
648 vt1211_write8(data, VT1211_REG_FAN_DIV,
649 ((data->fan_div[1] << 6) |
650 (data->fan_div[0] << 4) |
651 data->fan_ctl));
652 break;
653 case SHOW_SET_PWM_FREQ:
654 val = 135000 / SENSORS_LIMIT(val, 135000 >> 7, 135000);
655 /* calculate tmp = log2(val) */
656 tmp = 0;
657 for (val >>= 1; val > 0; val >>= 1) {
658 tmp++;
659 }
660 /* sync the data cache */
661 reg = vt1211_read8(data, VT1211_REG_PWM_CLK);
662 data->pwm_clk = (reg & 0xf8) | tmp;
663 vt1211_write8(data, VT1211_REG_PWM_CLK, data->pwm_clk);
664 break;
665 case SHOW_SET_PWM_AUTO_CHANNELS_TEMP:
666 if ((val < 1) || (val > 7)) {
667 count = -EINVAL;
668 dev_warn(dev, "temp channel %ld not supported. "
669 "Choose a value between 1 and 7.\n", val);
670 goto EXIT;
671 }
672 if (!ISTEMP(val - 1, data->uch_config)) {
673 count = -EINVAL;
674 dev_warn(dev, "temp channel %ld is not available.\n",
675 val);
676 goto EXIT;
677 }
678 /* sync the data cache */
679 reg = vt1211_read8(data, VT1211_REG_PWM_CTL);
680 data->pwm_ctl[0] = reg & 0xf;
681 data->pwm_ctl[1] = (reg >> 4) & 0xf;
682 data->pwm_ctl[ix] = (data->pwm_ctl[ix] & 8) | (val - 1);
683 vt1211_write8(data, VT1211_REG_PWM_CTL,
684 ((data->pwm_ctl[1] << 4) | data->pwm_ctl[0]));
685 break;
686 default:
687 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn);
688 }
689
690 EXIT:
691 mutex_unlock(&data->update_lock);
692 return count;
693 }
694
695 /* ---------------------------------------------------------------------
696 * PWM auto point definitions
697 * ix = [0-1]
698 * ap = [0-3]
699 * --------------------------------------------------------------------- */
700
701 /*
702 * pwm[ix+1]_auto_point[ap+1]_temp mapping table:
703 * Note that there is only a single set of temp auto points that controls both
704 * PWM controllers. We still create 2 sets of sysfs files to make it look
705 * more consistent even though they map to the same registers.
706 *
707 * ix ap : description
708 * -------------------
709 * 0 0 : pwm1/2 off temperature (pwm_auto_temp[0])
710 * 0 1 : pwm1/2 low speed temperature (pwm_auto_temp[1])
711 * 0 2 : pwm1/2 high speed temperature (pwm_auto_temp[2])
712 * 0 3 : pwm1/2 full speed temperature (pwm_auto_temp[3])
713 * 1 0 : pwm1/2 off temperature (pwm_auto_temp[0])
714 * 1 1 : pwm1/2 low speed temperature (pwm_auto_temp[1])
715 * 1 2 : pwm1/2 high speed temperature (pwm_auto_temp[2])
716 * 1 3 : pwm1/2 full speed temperature (pwm_auto_temp[3])
717 */
718
719 static ssize_t show_pwm_auto_point_temp(struct device *dev,
720 struct device_attribute *attr,
721 char *buf)
722 {
723 struct vt1211_data *data = vt1211_update_device(dev);
724 struct sensor_device_attribute_2 *sensor_attr_2 =
725 to_sensor_dev_attr_2(attr);
726 int ix = sensor_attr_2->index;
727 int ap = sensor_attr_2->nr;
728
729 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->pwm_ctl[ix] & 7,
730 data->pwm_auto_temp[ap]));
731 }
732
733 static ssize_t set_pwm_auto_point_temp(struct device *dev,
734 struct device_attribute *attr,
735 const char *buf, size_t count)
736 {
737 struct vt1211_data *data = dev_get_drvdata(dev);
738 struct sensor_device_attribute_2 *sensor_attr_2 =
739 to_sensor_dev_attr_2(attr);
740 int ix = sensor_attr_2->index;
741 int ap = sensor_attr_2->nr;
742 long val = simple_strtol(buf, NULL, 10);
743 int reg;
744
745 mutex_lock(&data->update_lock);
746
747 /* sync the data cache */
748 reg = vt1211_read8(data, VT1211_REG_PWM_CTL);
749 data->pwm_ctl[0] = reg & 0xf;
750 data->pwm_ctl[1] = (reg >> 4) & 0xf;
751
752 data->pwm_auto_temp[ap] = TEMP_TO_REG(data->pwm_ctl[ix] & 7, val);
753 vt1211_write8(data, VT1211_REG_PWM_AUTO_TEMP(ap),
754 data->pwm_auto_temp[ap]);
755 mutex_unlock(&data->update_lock);
756
757 return count;
758 }
759
760 /*
761 * pwm[ix+1]_auto_point[ap+1]_pwm mapping table:
762 * Note that the PWM auto points 0 & 3 are hard-wired in the VT1211 and can't
763 * be changed.
764 *
765 * ix ap : description
766 * -------------------
767 * 0 0 : pwm1 off (pwm_auto_pwm[0][0], hard-wired to 0)
768 * 0 1 : pwm1 low speed duty cycle (pwm_auto_pwm[0][1])
769 * 0 2 : pwm1 high speed duty cycle (pwm_auto_pwm[0][2])
770 * 0 3 : pwm1 full speed (pwm_auto_pwm[0][3], hard-wired to 255)
771 * 1 0 : pwm2 off (pwm_auto_pwm[1][0], hard-wired to 0)
772 * 1 1 : pwm2 low speed duty cycle (pwm_auto_pwm[1][1])
773 * 1 2 : pwm2 high speed duty cycle (pwm_auto_pwm[1][2])
774 * 1 3 : pwm2 full speed (pwm_auto_pwm[1][3], hard-wired to 255)
775 */
776
777 static ssize_t show_pwm_auto_point_pwm(struct device *dev,
778 struct device_attribute *attr,
779 char *buf)
780 {
781 struct vt1211_data *data = vt1211_update_device(dev);
782 struct sensor_device_attribute_2 *sensor_attr_2 =
783 to_sensor_dev_attr_2(attr);
784 int ix = sensor_attr_2->index;
785 int ap = sensor_attr_2->nr;
786
787 return sprintf(buf, "%d\n", data->pwm_auto_pwm[ix][ap]);
788 }
789
790 static ssize_t set_pwm_auto_point_pwm(struct device *dev,
791 struct device_attribute *attr,
792 const char *buf, size_t count)
793 {
794 struct vt1211_data *data = dev_get_drvdata(dev);
795 struct sensor_device_attribute_2 *sensor_attr_2 =
796 to_sensor_dev_attr_2(attr);
797 int ix = sensor_attr_2->index;
798 int ap = sensor_attr_2->nr;
799 long val = simple_strtol(buf, NULL, 10);
800
801 if ((val < 0) || (val > 255)) {
802 dev_err(dev, "pwm value %ld is out of range. "
803 "Choose a value between 0 and 255.\n" , val);
804 return -EINVAL;
805 }
806
807 mutex_lock(&data->update_lock);
808 data->pwm_auto_pwm[ix][ap] = val;
809 vt1211_write8(data, VT1211_REG_PWM_AUTO_PWM(ix, ap),
810 data->pwm_auto_pwm[ix][ap]);
811 mutex_unlock(&data->update_lock);
812
813 return count;
814 }
815
816 /* ---------------------------------------------------------------------
817 * Miscellaneous sysfs interfaces (VRM, VID, name, and (legacy) alarms)
818 * --------------------------------------------------------------------- */
819
820 static ssize_t show_vrm(struct device *dev, struct device_attribute *attr,
821 char *buf)
822 {
823 struct vt1211_data *data = dev_get_drvdata(dev);
824
825 return sprintf(buf, "%d\n", data->vrm);
826 }
827
828 static ssize_t set_vrm(struct device *dev, struct device_attribute *attr,
829 const char *buf, size_t count)
830 {
831 struct vt1211_data *data = dev_get_drvdata(dev);
832 long val = simple_strtol(buf, NULL, 10);
833
834 data->vrm = val;
835
836 return count;
837 }
838
839 static ssize_t show_vid(struct device *dev, struct device_attribute *attr,
840 char *buf)
841 {
842 struct vt1211_data *data = dev_get_drvdata(dev);
843
844 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
845 }
846
847 static ssize_t show_name(struct device *dev,
848 struct device_attribute *attr, char *buf)
849 {
850 struct vt1211_data *data = dev_get_drvdata(dev);
851
852 return sprintf(buf, "%s\n", data->name);
853 }
854
855 static ssize_t show_alarms(struct device *dev,
856 struct device_attribute *attr, char *buf)
857 {
858 struct vt1211_data *data = vt1211_update_device(dev);
859
860 return sprintf(buf, "%d\n", data->alarms);
861 }
862
863 /* ---------------------------------------------------------------------
864 * Device attribute structs
865 * --------------------------------------------------------------------- */
866
867 #define SENSOR_ATTR_IN_INPUT(ix) \
868 SENSOR_ATTR_2(in##ix##_input, S_IRUGO, \
869 show_in, NULL, SHOW_IN_INPUT, ix)
870
871 static struct sensor_device_attribute_2 vt1211_sysfs_in_input[] = {
872 SENSOR_ATTR_IN_INPUT(0),
873 SENSOR_ATTR_IN_INPUT(1),
874 SENSOR_ATTR_IN_INPUT(2),
875 SENSOR_ATTR_IN_INPUT(3),
876 SENSOR_ATTR_IN_INPUT(4),
877 SENSOR_ATTR_IN_INPUT(5),
878 };
879
880 #define SENSOR_ATTR_IN_MIN(ix) \
881 SENSOR_ATTR_2(in##ix##_min, S_IRUGO | S_IWUSR, \
882 show_in, set_in, SHOW_SET_IN_MIN, ix)
883
884 static struct sensor_device_attribute_2 vt1211_sysfs_in_min[] = {
885 SENSOR_ATTR_IN_MIN(0),
886 SENSOR_ATTR_IN_MIN(1),
887 SENSOR_ATTR_IN_MIN(2),
888 SENSOR_ATTR_IN_MIN(3),
889 SENSOR_ATTR_IN_MIN(4),
890 SENSOR_ATTR_IN_MIN(5),
891 };
892
893 #define SENSOR_ATTR_IN_MAX(ix) \
894 SENSOR_ATTR_2(in##ix##_max, S_IRUGO | S_IWUSR, \
895 show_in, set_in, SHOW_SET_IN_MAX, ix)
896
897 static struct sensor_device_attribute_2 vt1211_sysfs_in_max[] = {
898 SENSOR_ATTR_IN_MAX(0),
899 SENSOR_ATTR_IN_MAX(1),
900 SENSOR_ATTR_IN_MAX(2),
901 SENSOR_ATTR_IN_MAX(3),
902 SENSOR_ATTR_IN_MAX(4),
903 SENSOR_ATTR_IN_MAX(5),
904 };
905
906 #define SENSOR_ATTR_IN_ALARM(ix) \
907 SENSOR_ATTR_2(in##ix##_alarm, S_IRUGO, \
908 show_in, NULL, SHOW_IN_ALARM, ix)
909
910 static struct sensor_device_attribute_2 vt1211_sysfs_in_alarm[] = {
911 SENSOR_ATTR_IN_ALARM(0),
912 SENSOR_ATTR_IN_ALARM(1),
913 SENSOR_ATTR_IN_ALARM(2),
914 SENSOR_ATTR_IN_ALARM(3),
915 SENSOR_ATTR_IN_ALARM(4),
916 SENSOR_ATTR_IN_ALARM(5),
917 };
918
919 #define SENSOR_ATTR_TEMP_INPUT(ix) \
920 SENSOR_ATTR_2(temp##ix##_input, S_IRUGO, \
921 show_temp, NULL, SHOW_TEMP_INPUT, ix-1)
922
923 static struct sensor_device_attribute_2 vt1211_sysfs_temp_input[] = {
924 SENSOR_ATTR_TEMP_INPUT(1),
925 SENSOR_ATTR_TEMP_INPUT(2),
926 SENSOR_ATTR_TEMP_INPUT(3),
927 SENSOR_ATTR_TEMP_INPUT(4),
928 SENSOR_ATTR_TEMP_INPUT(5),
929 SENSOR_ATTR_TEMP_INPUT(6),
930 SENSOR_ATTR_TEMP_INPUT(7),
931 };
932
933 #define SENSOR_ATTR_TEMP_MAX(ix) \
934 SENSOR_ATTR_2(temp##ix##_max, S_IRUGO | S_IWUSR, \
935 show_temp, set_temp, SHOW_SET_TEMP_MAX, ix-1)
936
937 static struct sensor_device_attribute_2 vt1211_sysfs_temp_max[] = {
938 SENSOR_ATTR_TEMP_MAX(1),
939 SENSOR_ATTR_TEMP_MAX(2),
940 SENSOR_ATTR_TEMP_MAX(3),
941 SENSOR_ATTR_TEMP_MAX(4),
942 SENSOR_ATTR_TEMP_MAX(5),
943 SENSOR_ATTR_TEMP_MAX(6),
944 SENSOR_ATTR_TEMP_MAX(7),
945 };
946
947 #define SENSOR_ATTR_TEMP_MAX_HYST(ix) \
948 SENSOR_ATTR_2(temp##ix##_max_hyst, S_IRUGO | S_IWUSR, \
949 show_temp, set_temp, SHOW_SET_TEMP_MAX_HYST, ix-1)
950
951 static struct sensor_device_attribute_2 vt1211_sysfs_temp_max_hyst[] = {
952 SENSOR_ATTR_TEMP_MAX_HYST(1),
953 SENSOR_ATTR_TEMP_MAX_HYST(2),
954 SENSOR_ATTR_TEMP_MAX_HYST(3),
955 SENSOR_ATTR_TEMP_MAX_HYST(4),
956 SENSOR_ATTR_TEMP_MAX_HYST(5),
957 SENSOR_ATTR_TEMP_MAX_HYST(6),
958 SENSOR_ATTR_TEMP_MAX_HYST(7),
959 };
960
961 #define SENSOR_ATTR_TEMP_ALARM(ix) \
962 SENSOR_ATTR_2(temp##ix##_alarm, S_IRUGO, \
963 show_temp, NULL, SHOW_TEMP_ALARM, ix-1)
964
965 static struct sensor_device_attribute_2 vt1211_sysfs_temp_alarm[] = {
966 SENSOR_ATTR_TEMP_ALARM(1),
967 SENSOR_ATTR_TEMP_ALARM(2),
968 SENSOR_ATTR_TEMP_ALARM(3),
969 SENSOR_ATTR_TEMP_ALARM(4),
970 SENSOR_ATTR_TEMP_ALARM(5),
971 SENSOR_ATTR_TEMP_ALARM(6),
972 SENSOR_ATTR_TEMP_ALARM(7),
973 };
974
975 #define SENSOR_ATTR_FAN(ix) \
976 SENSOR_ATTR_2(fan##ix##_input, S_IRUGO, \
977 show_fan, NULL, SHOW_FAN_INPUT, ix-1), \
978 SENSOR_ATTR_2(fan##ix##_min, S_IRUGO | S_IWUSR, \
979 show_fan, set_fan, SHOW_SET_FAN_MIN, ix-1), \
980 SENSOR_ATTR_2(fan##ix##_div, S_IRUGO | S_IWUSR, \
981 show_fan, set_fan, SHOW_SET_FAN_DIV, ix-1), \
982 SENSOR_ATTR_2(fan##ix##_alarm, S_IRUGO, \
983 show_fan, NULL, SHOW_FAN_ALARM, ix-1)
984
985 #define SENSOR_ATTR_PWM(ix) \
986 SENSOR_ATTR_2(pwm##ix, S_IRUGO, \
987 show_pwm, NULL, SHOW_PWM, ix-1), \
988 SENSOR_ATTR_2(pwm##ix##_enable, S_IRUGO | S_IWUSR, \
989 show_pwm, set_pwm, SHOW_SET_PWM_ENABLE, ix-1), \
990 SENSOR_ATTR_2(pwm##ix##_auto_channels_temp, S_IRUGO | S_IWUSR, \
991 show_pwm, set_pwm, SHOW_SET_PWM_AUTO_CHANNELS_TEMP, ix-1)
992
993 #define SENSOR_ATTR_PWM_FREQ(ix) \
994 SENSOR_ATTR_2(pwm##ix##_freq, S_IRUGO | S_IWUSR, \
995 show_pwm, set_pwm, SHOW_SET_PWM_FREQ, ix-1)
996
997 #define SENSOR_ATTR_PWM_FREQ_RO(ix) \
998 SENSOR_ATTR_2(pwm##ix##_freq, S_IRUGO, \
999 show_pwm, NULL, SHOW_SET_PWM_FREQ, ix-1)
1000
1001 #define SENSOR_ATTR_PWM_AUTO_POINT_TEMP(ix, ap) \
1002 SENSOR_ATTR_2(pwm##ix##_auto_point##ap##_temp, S_IRUGO | S_IWUSR, \
1003 show_pwm_auto_point_temp, set_pwm_auto_point_temp, \
1004 ap-1, ix-1)
1005
1006 #define SENSOR_ATTR_PWM_AUTO_POINT_TEMP_RO(ix, ap) \
1007 SENSOR_ATTR_2(pwm##ix##_auto_point##ap##_temp, S_IRUGO, \
1008 show_pwm_auto_point_temp, NULL, \
1009 ap-1, ix-1)
1010
1011 #define SENSOR_ATTR_PWM_AUTO_POINT_PWM(ix, ap) \
1012 SENSOR_ATTR_2(pwm##ix##_auto_point##ap##_pwm, S_IRUGO | S_IWUSR, \
1013 show_pwm_auto_point_pwm, set_pwm_auto_point_pwm, \
1014 ap-1, ix-1)
1015
1016 #define SENSOR_ATTR_PWM_AUTO_POINT_PWM_RO(ix, ap) \
1017 SENSOR_ATTR_2(pwm##ix##_auto_point##ap##_pwm, S_IRUGO, \
1018 show_pwm_auto_point_pwm, NULL, \
1019 ap-1, ix-1)
1020
1021 static struct sensor_device_attribute_2 vt1211_sysfs_fan_pwm[] = {
1022 SENSOR_ATTR_FAN(1),
1023 SENSOR_ATTR_FAN(2),
1024 SENSOR_ATTR_PWM(1),
1025 SENSOR_ATTR_PWM(2),
1026 SENSOR_ATTR_PWM_FREQ(1),
1027 SENSOR_ATTR_PWM_FREQ_RO(2),
1028 SENSOR_ATTR_PWM_AUTO_POINT_TEMP(1, 1),
1029 SENSOR_ATTR_PWM_AUTO_POINT_TEMP(1, 2),
1030 SENSOR_ATTR_PWM_AUTO_POINT_TEMP(1, 3),
1031 SENSOR_ATTR_PWM_AUTO_POINT_TEMP(1, 4),
1032 SENSOR_ATTR_PWM_AUTO_POINT_TEMP_RO(2, 1),
1033 SENSOR_ATTR_PWM_AUTO_POINT_TEMP_RO(2, 2),
1034 SENSOR_ATTR_PWM_AUTO_POINT_TEMP_RO(2, 3),
1035 SENSOR_ATTR_PWM_AUTO_POINT_TEMP_RO(2, 4),
1036 SENSOR_ATTR_PWM_AUTO_POINT_PWM_RO(1, 1),
1037 SENSOR_ATTR_PWM_AUTO_POINT_PWM(1, 2),
1038 SENSOR_ATTR_PWM_AUTO_POINT_PWM(1, 3),
1039 SENSOR_ATTR_PWM_AUTO_POINT_PWM_RO(1, 4),
1040 SENSOR_ATTR_PWM_AUTO_POINT_PWM_RO(2, 1),
1041 SENSOR_ATTR_PWM_AUTO_POINT_PWM(2, 2),
1042 SENSOR_ATTR_PWM_AUTO_POINT_PWM(2, 3),
1043 SENSOR_ATTR_PWM_AUTO_POINT_PWM_RO(2, 4),
1044 };
1045
1046 static struct device_attribute vt1211_sysfs_misc[] = {
1047 __ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm),
1048 __ATTR(cpu0_vid, S_IRUGO, show_vid, NULL),
1049 __ATTR(name, S_IRUGO, show_name, NULL),
1050 __ATTR(alarms, S_IRUGO, show_alarms, NULL),
1051 };
1052
1053 /* ---------------------------------------------------------------------
1054 * Device registration and initialization
1055 * --------------------------------------------------------------------- */
1056
1057 static void __devinit vt1211_init_device(struct vt1211_data *data)
1058 {
1059 /* set VRM */
1060 data->vrm = vid_which_vrm();
1061
1062 /* Read (and initialize) UCH config */
1063 data->uch_config = vt1211_read8(data, VT1211_REG_UCH_CONFIG);
1064 if (uch_config > -1) {
1065 data->uch_config = (data->uch_config & 0x83) |
1066 (uch_config << 2);
1067 vt1211_write8(data, VT1211_REG_UCH_CONFIG, data->uch_config);
1068 }
1069
1070 /* Initialize the interrupt mode (if request at module load time).
1071 * The VT1211 implements 3 different modes for clearing interrupts:
1072 * 0: Clear INT when status register is read. Regenerate INT as long
1073 * as temp stays above hysteresis limit.
1074 * 1: Clear INT when status register is read. DON'T regenerate INT
1075 * until temp falls below hysteresis limit and exceeds hot limit
1076 * again.
1077 * 2: Clear INT when temp falls below max limit.
1078 *
1079 * The driver only allows to force mode 0 since that's the only one
1080 * that makes sense for 'sensors' */
1081 if (int_mode == 0) {
1082 vt1211_write8(data, VT1211_REG_TEMP1_CONFIG, 0);
1083 vt1211_write8(data, VT1211_REG_TEMP2_CONFIG, 0);
1084 }
1085
1086 /* Fill in some hard wired values into our data struct */
1087 data->pwm_auto_pwm[0][3] = 255;
1088 data->pwm_auto_pwm[1][3] = 255;
1089 }
1090
1091 static void vt1211_remove_sysfs(struct platform_device *pdev)
1092 {
1093 struct device *dev = &pdev->dev;
1094 int i;
1095
1096 for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_in_input); i++) {
1097 device_remove_file(dev,
1098 &vt1211_sysfs_in_input[i].dev_attr);
1099 device_remove_file(dev,
1100 &vt1211_sysfs_in_min[i].dev_attr);
1101 device_remove_file(dev,
1102 &vt1211_sysfs_in_max[i].dev_attr);
1103 device_remove_file(dev,
1104 &vt1211_sysfs_in_alarm[i].dev_attr);
1105 }
1106 for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_temp_input); i++) {
1107 device_remove_file(dev,
1108 &vt1211_sysfs_temp_input[i].dev_attr);
1109 device_remove_file(dev,
1110 &vt1211_sysfs_temp_max[i].dev_attr);
1111 device_remove_file(dev,
1112 &vt1211_sysfs_temp_max_hyst[i].dev_attr);
1113 device_remove_file(dev,
1114 &vt1211_sysfs_temp_alarm[i].dev_attr);
1115 }
1116 for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_fan_pwm); i++) {
1117 device_remove_file(dev,
1118 &vt1211_sysfs_fan_pwm[i].dev_attr);
1119 }
1120 for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_misc); i++) {
1121 device_remove_file(dev, &vt1211_sysfs_misc[i]);
1122 }
1123 }
1124
1125 static int __devinit vt1211_probe(struct platform_device *pdev)
1126 {
1127 struct device *dev = &pdev->dev;
1128 struct vt1211_data *data;
1129 struct resource *res;
1130 int i, err;
1131
1132 if (!(data = kzalloc(sizeof(struct vt1211_data), GFP_KERNEL))) {
1133 err = -ENOMEM;
1134 dev_err(dev, "Out of memory\n");
1135 goto EXIT;
1136 }
1137
1138 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
1139 if (!request_region(res->start, res->end - res->start + 1, DRVNAME)) {
1140 err = -EBUSY;
1141 dev_err(dev, "Failed to request region 0x%lx-0x%lx\n",
1142 (unsigned long)res->start, (unsigned long)res->end);
1143 goto EXIT_KFREE;
1144 }
1145 data->addr = res->start;
1146 data->name = DRVNAME;
1147 mutex_init(&data->update_lock);
1148
1149 platform_set_drvdata(pdev, data);
1150
1151 /* Initialize the VT1211 chip */
1152 vt1211_init_device(data);
1153
1154 /* Create sysfs interface files */
1155 for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_in_input); i++) {
1156 if (ISVOLT(i, data->uch_config)) {
1157 if ((err = device_create_file(dev,
1158 &vt1211_sysfs_in_input[i].dev_attr)) ||
1159 (err = device_create_file(dev,
1160 &vt1211_sysfs_in_min[i].dev_attr)) ||
1161 (err = device_create_file(dev,
1162 &vt1211_sysfs_in_max[i].dev_attr)) ||
1163 (err = device_create_file(dev,
1164 &vt1211_sysfs_in_alarm[i].dev_attr))) {
1165 goto EXIT_DEV_REMOVE;
1166 }
1167 }
1168 }
1169 for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_temp_input); i++) {
1170 if (ISTEMP(i, data->uch_config)) {
1171 if ((err = device_create_file(dev,
1172 &vt1211_sysfs_temp_input[i].dev_attr)) ||
1173 (err = device_create_file(dev,
1174 &vt1211_sysfs_temp_max[i].dev_attr)) ||
1175 (err = device_create_file(dev,
1176 &vt1211_sysfs_temp_max_hyst[i].dev_attr)) ||
1177 (err = device_create_file(dev,
1178 &vt1211_sysfs_temp_alarm[i].dev_attr))) {
1179 goto EXIT_DEV_REMOVE;
1180 }
1181 }
1182 }
1183 for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_fan_pwm); i++) {
1184 err = device_create_file(dev,
1185 &vt1211_sysfs_fan_pwm[i].dev_attr);
1186 if (err) {
1187 goto EXIT_DEV_REMOVE;
1188 }
1189 }
1190 for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_misc); i++) {
1191 err = device_create_file(dev,
1192 &vt1211_sysfs_misc[i]);
1193 if (err) {
1194 goto EXIT_DEV_REMOVE;
1195 }
1196 }
1197
1198 /* Register device */
1199 data->hwmon_dev = hwmon_device_register(dev);
1200 if (IS_ERR(data->hwmon_dev)) {
1201 err = PTR_ERR(data->hwmon_dev);
1202 dev_err(dev, "Class registration failed (%d)\n", err);
1203 goto EXIT_DEV_REMOVE_SILENT;
1204 }
1205
1206 return 0;
1207
1208 EXIT_DEV_REMOVE:
1209 dev_err(dev, "Sysfs interface creation failed (%d)\n", err);
1210 EXIT_DEV_REMOVE_SILENT:
1211 vt1211_remove_sysfs(pdev);
1212 release_region(res->start, res->end - res->start + 1);
1213 EXIT_KFREE:
1214 platform_set_drvdata(pdev, NULL);
1215 kfree(data);
1216 EXIT:
1217 return err;
1218 }
1219
1220 static int __devexit vt1211_remove(struct platform_device *pdev)
1221 {
1222 struct vt1211_data *data = platform_get_drvdata(pdev);
1223 struct resource *res;
1224
1225 hwmon_device_unregister(data->hwmon_dev);
1226 vt1211_remove_sysfs(pdev);
1227 platform_set_drvdata(pdev, NULL);
1228 kfree(data);
1229
1230 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
1231 release_region(res->start, res->end - res->start + 1);
1232
1233 return 0;
1234 }
1235
1236 static struct platform_driver vt1211_driver = {
1237 .driver = {
1238 .owner = THIS_MODULE,
1239 .name = DRVNAME,
1240 },
1241 .probe = vt1211_probe,
1242 .remove = __devexit_p(vt1211_remove),
1243 };
1244
1245 static int __init vt1211_device_add(unsigned short address)
1246 {
1247 struct resource res = {
1248 .start = address,
1249 .end = address + 0x7f,
1250 .flags = IORESOURCE_IO,
1251 };
1252 int err;
1253
1254 pdev = platform_device_alloc(DRVNAME, address);
1255 if (!pdev) {
1256 err = -ENOMEM;
1257 printk(KERN_ERR DRVNAME ": Device allocation failed (%d)\n",
1258 err);
1259 goto EXIT;
1260 }
1261
1262 res.name = pdev->name;
1263 err = acpi_check_resource_conflict(&res);
1264 if (err)
1265 goto EXIT_DEV_PUT;
1266
1267 err = platform_device_add_resources(pdev, &res, 1);
1268 if (err) {
1269 printk(KERN_ERR DRVNAME ": Device resource addition failed "
1270 "(%d)\n", err);
1271 goto EXIT_DEV_PUT;
1272 }
1273
1274 err = platform_device_add(pdev);
1275 if (err) {
1276 printk(KERN_ERR DRVNAME ": Device addition failed (%d)\n",
1277 err);
1278 goto EXIT_DEV_PUT;
1279 }
1280
1281 return 0;
1282
1283 EXIT_DEV_PUT:
1284 platform_device_put(pdev);
1285 EXIT:
1286 return err;
1287 }
1288
1289 static int __init vt1211_find(int sio_cip, unsigned short *address)
1290 {
1291 int err = -ENODEV;
1292 int devid;
1293
1294 superio_enter(sio_cip);
1295
1296 devid = force_id ? force_id : superio_inb(sio_cip, SIO_VT1211_DEVID);
1297 if (devid != SIO_VT1211_ID) {
1298 goto EXIT;
1299 }
1300
1301 superio_select(sio_cip, SIO_VT1211_LDN_HWMON);
1302
1303 if ((superio_inb(sio_cip, SIO_VT1211_ACTIVE) & 1) == 0) {
1304 printk(KERN_WARNING DRVNAME ": HW monitor is disabled, "
1305 "skipping\n");
1306 goto EXIT;
1307 }
1308
1309 *address = ((superio_inb(sio_cip, SIO_VT1211_BADDR) << 8) |
1310 (superio_inb(sio_cip, SIO_VT1211_BADDR + 1))) & 0xff00;
1311 if (*address == 0) {
1312 printk(KERN_WARNING DRVNAME ": Base address is not set, "
1313 "skipping\n");
1314 goto EXIT;
1315 }
1316
1317 err = 0;
1318 printk(KERN_INFO DRVNAME ": Found VT1211 chip at 0x%04x, "
1319 "revision %u\n", *address,
1320 superio_inb(sio_cip, SIO_VT1211_DEVREV));
1321
1322 EXIT:
1323 superio_exit(sio_cip);
1324 return err;
1325 }
1326
1327 static int __init vt1211_init(void)
1328 {
1329 int err;
1330 unsigned short address = 0;
1331
1332 if ((err = vt1211_find(SIO_REG_CIP1, &address)) &&
1333 (err = vt1211_find(SIO_REG_CIP2, &address))) {
1334 goto EXIT;
1335 }
1336
1337 if ((uch_config < -1) || (uch_config > 31)) {
1338 err = -EINVAL;
1339 printk(KERN_WARNING DRVNAME ": Invalid UCH configuration %d. "
1340 "Choose a value between 0 and 31.\n", uch_config);
1341 goto EXIT;
1342 }
1343
1344 if ((int_mode < -1) || (int_mode > 0)) {
1345 err = -EINVAL;
1346 printk(KERN_WARNING DRVNAME ": Invalid interrupt mode %d. "
1347 "Only mode 0 is supported.\n", int_mode);
1348 goto EXIT;
1349 }
1350
1351 err = platform_driver_register(&vt1211_driver);
1352 if (err) {
1353 goto EXIT;
1354 }
1355
1356 /* Sets global pdev as a side effect */
1357 err = vt1211_device_add(address);
1358 if (err) {
1359 goto EXIT_DRV_UNREGISTER;
1360 }
1361
1362 return 0;
1363
1364 EXIT_DRV_UNREGISTER:
1365 platform_driver_unregister(&vt1211_driver);
1366 EXIT:
1367 return err;
1368 }
1369
1370 static void __exit vt1211_exit(void)
1371 {
1372 platform_device_unregister(pdev);
1373 platform_driver_unregister(&vt1211_driver);
1374 }
1375
1376 MODULE_AUTHOR("Juerg Haefliger <juergh@gmail.com>");
1377 MODULE_DESCRIPTION("VT1211 sensors");
1378 MODULE_LICENSE("GPL");
1379
1380 module_init(vt1211_init);
1381 module_exit(vt1211_exit);
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