2 * vt1211.c - driver for the VIA VT1211 Super-I/O chip integrated hardware
4 * Copyright (C) 2006 Juerg Haefliger <juergh@gmail.com>
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.
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.
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.
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.
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>
36 static int uch_config = -1;
37 module_param(uch_config, int, 0);
38 MODULE_PARM_DESC(uch_config, "Initialize the universal channel configuration");
40 static int int_mode = -1;
41 module_param(int_mode, int, 0);
42 MODULE_PARM_DESC(int_mode, "Force the temperature interrupt mode");
44 static struct platform_device *pdev;
46 #define DRVNAME "vt1211"
48 /* ---------------------------------------------------------------------
51 * The sensors are defined as follows.
53 * Sensor Voltage Mode Temp Mode Notes (from the datasheet)
54 * -------- ------------ --------- --------------------------
55 * Reading 1 temp1 Intel thermal diode
56 * Reading 3 temp2 Internal thermal diode
57 * UCH1/Reading2 in0 temp3 NTC type thermistor
58 * UCH2 in1 temp4 +2.5V
62 * 3.3V in5 Internal VDD (+3.3V)
64 * --------------------------------------------------------------------- */
66 /* Voltages (in) numbered 0-5 (ix) */
67 #define VT1211_REG_IN(ix) (0x21 + (ix))
68 #define VT1211_REG_IN_MIN(ix) ((ix) == 0 ? 0x3e : 0x2a + 2 * (ix))
69 #define VT1211_REG_IN_MAX(ix) ((ix) == 0 ? 0x3d : 0x29 + 2 * (ix))
71 /* Temperatures (temp) numbered 0-6 (ix) */
72 static u8 regtemp[] = {0x1f, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25};
73 static u8 regtempmax[] = {0x39, 0x1d, 0x3d, 0x2b, 0x2d, 0x2f, 0x31};
74 static u8 regtemphyst[] = {0x3a, 0x1e, 0x3e, 0x2c, 0x2e, 0x30, 0x32};
76 /* Fans numbered 0-1 (ix) */
77 #define VT1211_REG_FAN(ix) (0x29 + (ix))
78 #define VT1211_REG_FAN_MIN(ix) (0x3b + (ix))
79 #define VT1211_REG_FAN_DIV 0x47
81 /* PWMs numbered 0-1 (ix) */
82 /* Auto points numbered 0-3 (ap) */
83 #define VT1211_REG_PWM(ix) (0x60 + (ix))
84 #define VT1211_REG_PWM_CLK 0x50
85 #define VT1211_REG_PWM_CTL 0x51
86 #define VT1211_REG_PWM_AUTO_TEMP(ap) (0x55 - (ap))
87 #define VT1211_REG_PWM_AUTO_PWM(ix, ap) (0x58 + 2 * (ix) - (ap))
89 /* Miscellaneous registers */
90 #define VT1211_REG_CONFIG 0x40
91 #define VT1211_REG_ALARM1 0x41
92 #define VT1211_REG_ALARM2 0x42
93 #define VT1211_REG_VID 0x45
94 #define VT1211_REG_UCH_CONFIG 0x4a
95 #define VT1211_REG_TEMP1_CONFIG 0x4b
96 #define VT1211_REG_TEMP2_CONFIG 0x4c
98 /* In, temp & fan alarm bits */
99 static const u8 bitalarmin[] = {11, 0, 1, 3, 8, 2, 9};
100 static const u8 bitalarmtemp[] = {4, 15, 11, 0, 1, 3, 8};
101 static const u8 bitalarmfan[] = {6, 7};
103 /* ---------------------------------------------------------------------
104 * Data structures and manipulation thereof
105 * --------------------------------------------------------------------- */
110 struct class_device *class_dev;
112 struct mutex update_lock;
113 char valid; /* !=0 if following fields are valid */
114 unsigned long last_updated; /* In jiffies */
116 /* Register values */
131 u8 pwm_auto_pwm[2][4];
132 u8 vid; /* Read once at init time */
134 u8 uch_config; /* Read once at init time */
139 #define ISVOLT(ix, uch_config) ((ix) > 4 ? 1 : \
140 !(((uch_config) >> ((ix) + 2)) & 1))
143 #define ISTEMP(ix, uch_config) ((ix) < 2 ? 1 : \
144 ((uch_config) >> (ix)) & 1)
146 /* in5 (ix = 5) is special. It's the internal 3.3V so it's scaled in the
147 driver according to the VT1211 BIOS porting guide */
148 #define IN_FROM_REG(ix, reg) ((reg) < 3 ? 0 : (ix) == 5 ? \
149 (((reg) - 3) * 15882 + 479) / 958 : \
150 (((reg) - 3) * 10000 + 479) / 958)
151 #define IN_TO_REG(ix, val) (SENSORS_LIMIT((ix) == 5 ? \
152 ((val) * 958 + 7941) / 15882 + 3 : \
153 ((val) * 958 + 5000) / 10000 + 3, 0, 255))
155 /* temp1 (ix = 0) is an intel thermal diode which is scaled in user space.
156 temp2 (ix = 1) is the internal temp diode so it's scaled in the driver
157 according to some measurements that I took on an EPIA M10000.
158 temp3-7 are thermistor based so the driver returns the voltage measured at
159 the pin (range 0V - 2.2V). */
160 #define TEMP_FROM_REG(ix, reg) ((ix) == 0 ? (reg) * 1000 : \
161 (ix) == 1 ? (reg) < 51 ? 0 : \
162 ((reg) - 51) * 1000 : \
163 ((253 - (reg)) * 2200 + 105) / 210)
164 #define TEMP_TO_REG(ix, val) SENSORS_LIMIT( \
165 ((ix) == 0 ? ((val) + 500) / 1000 : \
166 (ix) == 1 ? ((val) + 500) / 1000 + 51 : \
167 253 - ((val) * 210 + 1100) / 2200), 0, 255)
169 #define DIV_FROM_REG(reg) (1 << (reg))
171 #define RPM_FROM_REG(reg, div) (((reg) == 0) || ((reg) == 255) ? 0 : \
172 1310720 / (reg) / DIV_FROM_REG(div))
173 #define RPM_TO_REG(val, div) ((val) == 0 ? 255 : \
174 SENSORS_LIMIT((1310720 / (val) / \
175 DIV_FROM_REG(div)), 1, 254))
177 /* ---------------------------------------------------------------------
178 * Super-I/O constants and functions
179 * --------------------------------------------------------------------- */
181 /* Configuration & data index port registers */
182 #define SIO_REG_CIP 0x2e
183 #define SIO_REG_DIP 0x2f
185 /* Configuration registers */
186 #define SIO_VT1211_LDN 0x07 /* logical device number */
187 #define SIO_VT1211_DEVID 0x20 /* device ID */
188 #define SIO_VT1211_DEVREV 0x21 /* device revision */
189 #define SIO_VT1211_ACTIVE 0x30 /* HW monitor active */
190 #define SIO_VT1211_BADDR 0x60 /* base I/O address */
191 #define SIO_VT1211_ID 0x3c /* VT1211 device ID */
193 /* VT1211 logical device numbers */
194 #define SIO_VT1211_LDN_HWMON 0x0b /* HW monitor */
196 static inline void superio_outb(int reg, int val)
198 outb(reg, SIO_REG_CIP);
199 outb(val, SIO_REG_DIP);
202 static inline int superio_inb(int reg)
204 outb(reg, SIO_REG_CIP);
205 return inb(SIO_REG_DIP);
208 static inline void superio_select(int ldn)
210 outb(SIO_VT1211_LDN, SIO_REG_CIP);
211 outb(ldn, SIO_REG_DIP);
214 static inline void superio_enter(void)
216 outb(0x87, SIO_REG_CIP);
217 outb(0x87, SIO_REG_CIP);
220 static inline void superio_exit(void)
222 outb(0xaa, SIO_REG_CIP);
225 /* ---------------------------------------------------------------------
227 * --------------------------------------------------------------------- */
229 static inline u8 vt1211_read8(struct vt1211_data *data, u8 reg)
231 return inb(data->addr + reg);
234 static inline void vt1211_write8(struct vt1211_data *data, u8 reg, u8 val)
236 outb(val, data->addr + reg);
239 static struct vt1211_data *vt1211_update_device(struct device *dev)
241 struct vt1211_data *data = dev_get_drvdata(dev);
244 mutex_lock(&data->update_lock);
246 /* registers cache is refreshed after 1 second */
247 if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
249 data->vid = vt1211_read8(data, VT1211_REG_VID) & 0x1f;
251 /* voltage (in) registers */
252 for (ix = 0; ix < ARRAY_SIZE(data->in); ix++) {
253 if (ISVOLT(ix, data->uch_config)) {
254 data->in[ix] = vt1211_read8(data,
256 data->in_min[ix] = vt1211_read8(data,
257 VT1211_REG_IN_MIN(ix));
258 data->in_max[ix] = vt1211_read8(data,
259 VT1211_REG_IN_MAX(ix));
264 for (ix = 0; ix < ARRAY_SIZE(data->temp); ix++) {
265 if (ISTEMP(ix, data->uch_config)) {
266 data->temp[ix] = vt1211_read8(data,
268 data->temp_max[ix] = vt1211_read8(data,
270 data->temp_hyst[ix] = vt1211_read8(data,
275 /* fan & pwm registers */
276 for (ix = 0; ix < ARRAY_SIZE(data->fan); ix++) {
277 data->fan[ix] = vt1211_read8(data,
279 data->fan_min[ix] = vt1211_read8(data,
280 VT1211_REG_FAN_MIN(ix));
281 data->pwm[ix] = vt1211_read8(data,
284 val = vt1211_read8(data, VT1211_REG_FAN_DIV);
285 data->fan_div[0] = (val >> 4) & 3;
286 data->fan_div[1] = (val >> 6) & 3;
287 data->fan_ctl = val & 0xf;
289 val = vt1211_read8(data, VT1211_REG_PWM_CTL);
290 data->pwm_ctl[0] = val & 0xf;
291 data->pwm_ctl[1] = (val >> 4) & 0xf;
293 data->pwm_clk = vt1211_read8(data, VT1211_REG_PWM_CLK);
295 /* pwm & temp auto point registers */
296 data->pwm_auto_pwm[0][1] = vt1211_read8(data,
297 VT1211_REG_PWM_AUTO_PWM(0, 1));
298 data->pwm_auto_pwm[0][2] = vt1211_read8(data,
299 VT1211_REG_PWM_AUTO_PWM(0, 2));
300 data->pwm_auto_pwm[1][1] = vt1211_read8(data,
301 VT1211_REG_PWM_AUTO_PWM(1, 1));
302 data->pwm_auto_pwm[1][2] = vt1211_read8(data,
303 VT1211_REG_PWM_AUTO_PWM(1, 2));
304 for (ix = 0; ix < ARRAY_SIZE(data->pwm_auto_temp); ix++) {
305 data->pwm_auto_temp[ix] = vt1211_read8(data,
306 VT1211_REG_PWM_AUTO_TEMP(ix));
309 /* alarm registers */
310 data->alarms = (vt1211_read8(data, VT1211_REG_ALARM2) << 8) |
311 vt1211_read8(data, VT1211_REG_ALARM1);
313 data->last_updated = jiffies;
317 mutex_unlock(&data->update_lock);
322 /* ---------------------------------------------------------------------
323 * Voltage sysfs interfaces
325 * --------------------------------------------------------------------- */
327 #define SHOW_IN_INPUT 0
328 #define SHOW_SET_IN_MIN 1
329 #define SHOW_SET_IN_MAX 2
330 #define SHOW_IN_ALARM 3
332 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
335 struct vt1211_data *data = vt1211_update_device(dev);
336 struct sensor_device_attribute_2 *sensor_attr_2 =
337 to_sensor_dev_attr_2(attr);
338 int ix = sensor_attr_2->index;
339 int fn = sensor_attr_2->nr;
344 res = IN_FROM_REG(ix, data->in[ix]);
346 case SHOW_SET_IN_MIN:
347 res = IN_FROM_REG(ix, data->in_min[ix]);
349 case SHOW_SET_IN_MAX:
350 res = IN_FROM_REG(ix, data->in_max[ix]);
353 res = (data->alarms >> bitalarmin[ix]) & 1;
357 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn);
360 return sprintf(buf, "%d\n", res);
363 static ssize_t set_in(struct device *dev, struct device_attribute *attr,
364 const char *buf, size_t count)
366 struct vt1211_data *data = dev_get_drvdata(dev);
367 struct sensor_device_attribute_2 *sensor_attr_2 =
368 to_sensor_dev_attr_2(attr);
369 int ix = sensor_attr_2->index;
370 int fn = sensor_attr_2->nr;
371 long val = simple_strtol(buf, NULL, 10);
373 mutex_lock(&data->update_lock);
375 case SHOW_SET_IN_MIN:
376 data->in_min[ix] = IN_TO_REG(ix, val);
377 vt1211_write8(data, VT1211_REG_IN_MIN(ix), data->in_min[ix]);
379 case SHOW_SET_IN_MAX:
380 data->in_max[ix] = IN_TO_REG(ix, val);
381 vt1211_write8(data, VT1211_REG_IN_MAX(ix), data->in_max[ix]);
384 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn);
386 mutex_unlock(&data->update_lock);
391 /* ---------------------------------------------------------------------
392 * Temperature sysfs interfaces
394 * --------------------------------------------------------------------- */
396 #define SHOW_TEMP_INPUT 0
397 #define SHOW_SET_TEMP_MAX 1
398 #define SHOW_SET_TEMP_MAX_HYST 2
399 #define SHOW_TEMP_ALARM 3
401 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
404 struct vt1211_data *data = vt1211_update_device(dev);
405 struct sensor_device_attribute_2 *sensor_attr_2 =
406 to_sensor_dev_attr_2(attr);
407 int ix = sensor_attr_2->index;
408 int fn = sensor_attr_2->nr;
412 case SHOW_TEMP_INPUT:
413 res = TEMP_FROM_REG(ix, data->temp[ix]);
415 case SHOW_SET_TEMP_MAX:
416 res = TEMP_FROM_REG(ix, data->temp_max[ix]);
418 case SHOW_SET_TEMP_MAX_HYST:
419 res = TEMP_FROM_REG(ix, data->temp_hyst[ix]);
421 case SHOW_TEMP_ALARM:
422 res = (data->alarms >> bitalarmtemp[ix]) & 1;
426 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn);
429 return sprintf(buf, "%d\n", res);
432 static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
433 const char *buf, size_t count)
435 struct vt1211_data *data = dev_get_drvdata(dev);
436 struct sensor_device_attribute_2 *sensor_attr_2 =
437 to_sensor_dev_attr_2(attr);
438 int ix = sensor_attr_2->index;
439 int fn = sensor_attr_2->nr;
440 long val = simple_strtol(buf, NULL, 10);
442 mutex_lock(&data->update_lock);
444 case SHOW_SET_TEMP_MAX:
445 data->temp_max[ix] = TEMP_TO_REG(ix, val);
446 vt1211_write8(data, regtempmax[ix],
449 case SHOW_SET_TEMP_MAX_HYST:
450 data->temp_hyst[ix] = TEMP_TO_REG(ix, val);
451 vt1211_write8(data, regtemphyst[ix],
452 data->temp_hyst[ix]);
455 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn);
457 mutex_unlock(&data->update_lock);
462 /* ---------------------------------------------------------------------
463 * Fan sysfs interfaces
465 * --------------------------------------------------------------------- */
467 #define SHOW_FAN_INPUT 0
468 #define SHOW_SET_FAN_MIN 1
469 #define SHOW_SET_FAN_DIV 2
470 #define SHOW_FAN_ALARM 3
472 static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
475 struct vt1211_data *data = vt1211_update_device(dev);
476 struct sensor_device_attribute_2 *sensor_attr_2 =
477 to_sensor_dev_attr_2(attr);
478 int ix = sensor_attr_2->index;
479 int fn = sensor_attr_2->nr;
484 res = RPM_FROM_REG(data->fan[ix], data->fan_div[ix]);
486 case SHOW_SET_FAN_MIN:
487 res = RPM_FROM_REG(data->fan_min[ix], data->fan_div[ix]);
489 case SHOW_SET_FAN_DIV:
490 res = DIV_FROM_REG(data->fan_div[ix]);
493 res = (data->alarms >> bitalarmfan[ix]) & 1;
497 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn);
500 return sprintf(buf, "%d\n", res);
503 static ssize_t set_fan(struct device *dev, struct device_attribute *attr,
504 const char *buf, size_t count)
506 struct vt1211_data *data = dev_get_drvdata(dev);
507 struct sensor_device_attribute_2 *sensor_attr_2 =
508 to_sensor_dev_attr_2(attr);
509 int ix = sensor_attr_2->index;
510 int fn = sensor_attr_2->nr;
511 long val = simple_strtol(buf, NULL, 10);
514 mutex_lock(&data->update_lock);
516 /* sync the data cache */
517 reg = vt1211_read8(data, VT1211_REG_FAN_DIV);
518 data->fan_div[0] = (reg >> 4) & 3;
519 data->fan_div[1] = (reg >> 6) & 3;
520 data->fan_ctl = reg & 0xf;
523 case SHOW_SET_FAN_MIN:
524 data->fan_min[ix] = RPM_TO_REG(val, data->fan_div[ix]);
525 vt1211_write8(data, VT1211_REG_FAN_MIN(ix),
528 case SHOW_SET_FAN_DIV:
530 case 1: data->fan_div[ix] = 0; break;
531 case 2: data->fan_div[ix] = 1; break;
532 case 4: data->fan_div[ix] = 2; break;
533 case 8: data->fan_div[ix] = 3; break;
536 dev_warn(dev, "fan div value %ld not "
537 "supported. Choose one of 1, 2, "
541 vt1211_write8(data, VT1211_REG_FAN_DIV,
542 ((data->fan_div[1] << 6) |
543 (data->fan_div[0] << 4) |
547 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn);
551 mutex_unlock(&data->update_lock);
555 /* ---------------------------------------------------------------------
556 * PWM sysfs interfaces
558 * --------------------------------------------------------------------- */
561 #define SHOW_SET_PWM_ENABLE 1
562 #define SHOW_SET_PWM_FREQ 2
563 #define SHOW_SET_PWM_AUTO_CHANNELS_TEMP 3
565 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
568 struct vt1211_data *data = vt1211_update_device(dev);
569 struct sensor_device_attribute_2 *sensor_attr_2 =
570 to_sensor_dev_attr_2(attr);
571 int ix = sensor_attr_2->index;
572 int fn = sensor_attr_2->nr;
579 case SHOW_SET_PWM_ENABLE:
580 res = ((data->pwm_ctl[ix] >> 3) & 1) ? 2 : 0;
582 case SHOW_SET_PWM_FREQ:
583 res = 90000 >> (data->pwm_clk & 7);
585 case SHOW_SET_PWM_AUTO_CHANNELS_TEMP:
586 res = (data->pwm_ctl[ix] & 7) + 1;
590 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn);
593 return sprintf(buf, "%d\n", res);
596 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
597 const char *buf, size_t count)
599 struct vt1211_data *data = dev_get_drvdata(dev);
600 struct sensor_device_attribute_2 *sensor_attr_2 =
601 to_sensor_dev_attr_2(attr);
602 int ix = sensor_attr_2->index;
603 int fn = sensor_attr_2->nr;
604 long val = simple_strtol(buf, NULL, 10);
607 mutex_lock(&data->update_lock);
610 case SHOW_SET_PWM_ENABLE:
611 /* sync the data cache */
612 reg = vt1211_read8(data, VT1211_REG_FAN_DIV);
613 data->fan_div[0] = (reg >> 4) & 3;
614 data->fan_div[1] = (reg >> 6) & 3;
615 data->fan_ctl = reg & 0xf;
616 reg = vt1211_read8(data, VT1211_REG_PWM_CTL);
617 data->pwm_ctl[0] = reg & 0xf;
618 data->pwm_ctl[1] = (reg >> 4) & 0xf;
621 data->pwm_ctl[ix] &= 7;
622 /* disable SmartGuardian if both PWM outputs are
624 if ((data->pwm_ctl[ix ^ 1] & 1) == 0) {
625 data->fan_ctl &= 0xe;
629 data->pwm_ctl[ix] |= 8;
634 dev_warn(dev, "pwm mode %ld not supported. "
635 "Choose one of 0 or 2.\n", val);
638 vt1211_write8(data, VT1211_REG_PWM_CTL,
639 ((data->pwm_ctl[1] << 4) |
641 vt1211_write8(data, VT1211_REG_FAN_DIV,
642 ((data->fan_div[1] << 6) |
643 (data->fan_div[0] << 4) |
646 case SHOW_SET_PWM_FREQ:
647 val = 135000 / SENSORS_LIMIT(val, 135000 >> 7, 135000);
648 /* calculate tmp = log2(val) */
650 for (val >>= 1; val > 0; val >>= 1) {
653 /* sync the data cache */
654 reg = vt1211_read8(data, VT1211_REG_PWM_CLK);
655 data->pwm_clk = (reg & 0xf8) | tmp;
656 vt1211_write8(data, VT1211_REG_PWM_CLK, data->pwm_clk);
658 case SHOW_SET_PWM_AUTO_CHANNELS_TEMP:
659 if ((val < 1) || (val > 7)) {
661 dev_warn(dev, "temp channel %ld not supported. "
662 "Choose a value between 1 and 7.\n", val);
665 if (!ISTEMP(val - 1, data->uch_config)) {
667 dev_warn(dev, "temp channel %ld is not available.\n",
671 /* sync the data cache */
672 reg = vt1211_read8(data, VT1211_REG_PWM_CTL);
673 data->pwm_ctl[0] = reg & 0xf;
674 data->pwm_ctl[1] = (reg >> 4) & 0xf;
675 data->pwm_ctl[ix] = (data->pwm_ctl[ix] & 8) | (val - 1);
676 vt1211_write8(data, VT1211_REG_PWM_CTL,
677 ((data->pwm_ctl[1] << 4) | data->pwm_ctl[0]));
680 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn);
684 mutex_unlock(&data->update_lock);
688 /* ---------------------------------------------------------------------
689 * PWM auto point definitions
692 * --------------------------------------------------------------------- */
695 * pwm[ix+1]_auto_point[ap+1]_temp mapping table:
696 * Note that there is only a single set of temp auto points that controls both
697 * PWM controllers. We still create 2 sets of sysfs files to make it look
698 * more consistent even though they map to the same registers.
700 * ix ap : description
701 * -------------------
702 * 0 0 : pwm1/2 off temperature (pwm_auto_temp[0])
703 * 0 1 : pwm1/2 low speed temperature (pwm_auto_temp[1])
704 * 0 2 : pwm1/2 high speed temperature (pwm_auto_temp[2])
705 * 0 3 : pwm1/2 full speed temperature (pwm_auto_temp[3])
706 * 1 0 : pwm1/2 off temperature (pwm_auto_temp[0])
707 * 1 1 : pwm1/2 low speed temperature (pwm_auto_temp[1])
708 * 1 2 : pwm1/2 high speed temperature (pwm_auto_temp[2])
709 * 1 3 : pwm1/2 full speed temperature (pwm_auto_temp[3])
712 static ssize_t show_pwm_auto_point_temp(struct device *dev,
713 struct device_attribute *attr,
716 struct vt1211_data *data = vt1211_update_device(dev);
717 struct sensor_device_attribute_2 *sensor_attr_2 =
718 to_sensor_dev_attr_2(attr);
719 int ix = sensor_attr_2->index;
720 int ap = sensor_attr_2->nr;
722 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->pwm_ctl[ix] & 7,
723 data->pwm_auto_temp[ap]));
726 static ssize_t set_pwm_auto_point_temp(struct device *dev,
727 struct device_attribute *attr,
728 const char *buf, size_t count)
730 struct vt1211_data *data = dev_get_drvdata(dev);
731 struct sensor_device_attribute_2 *sensor_attr_2 =
732 to_sensor_dev_attr_2(attr);
733 int ix = sensor_attr_2->index;
734 int ap = sensor_attr_2->nr;
735 long val = simple_strtol(buf, NULL, 10);
738 mutex_lock(&data->update_lock);
740 /* sync the data cache */
741 reg = vt1211_read8(data, VT1211_REG_PWM_CTL);
742 data->pwm_ctl[0] = reg & 0xf;
743 data->pwm_ctl[1] = (reg >> 4) & 0xf;
745 data->pwm_auto_temp[ap] = TEMP_TO_REG(data->pwm_ctl[ix] & 7, val);
746 vt1211_write8(data, VT1211_REG_PWM_AUTO_TEMP(ap),
747 data->pwm_auto_temp[ap]);
748 mutex_unlock(&data->update_lock);
754 * pwm[ix+1]_auto_point[ap+1]_pwm mapping table:
755 * Note that the PWM auto points 0 & 3 are hard-wired in the VT1211 and can't
758 * ix ap : description
759 * -------------------
760 * 0 0 : pwm1 off (pwm_auto_pwm[0][0], hard-wired to 0)
761 * 0 1 : pwm1 low speed duty cycle (pwm_auto_pwm[0][1])
762 * 0 2 : pwm1 high speed duty cycle (pwm_auto_pwm[0][2])
763 * 0 3 : pwm1 full speed (pwm_auto_pwm[0][3], hard-wired to 255)
764 * 1 0 : pwm2 off (pwm_auto_pwm[1][0], hard-wired to 0)
765 * 1 1 : pwm2 low speed duty cycle (pwm_auto_pwm[1][1])
766 * 1 2 : pwm2 high speed duty cycle (pwm_auto_pwm[1][2])
767 * 1 3 : pwm2 full speed (pwm_auto_pwm[1][3], hard-wired to 255)
770 static ssize_t show_pwm_auto_point_pwm(struct device *dev,
771 struct device_attribute *attr,
774 struct vt1211_data *data = vt1211_update_device(dev);
775 struct sensor_device_attribute_2 *sensor_attr_2 =
776 to_sensor_dev_attr_2(attr);
777 int ix = sensor_attr_2->index;
778 int ap = sensor_attr_2->nr;
780 return sprintf(buf, "%d\n", data->pwm_auto_pwm[ix][ap]);
783 static ssize_t set_pwm_auto_point_pwm(struct device *dev,
784 struct device_attribute *attr,
785 const char *buf, size_t count)
787 struct vt1211_data *data = dev_get_drvdata(dev);
788 struct sensor_device_attribute_2 *sensor_attr_2 =
789 to_sensor_dev_attr_2(attr);
790 int ix = sensor_attr_2->index;
791 int ap = sensor_attr_2->nr;
792 long val = simple_strtol(buf, NULL, 10);
794 if ((val < 0) || (val > 255)) {
795 dev_err(dev, "pwm value %ld is out of range. "
796 "Choose a value between 0 and 255." , val);
800 mutex_lock(&data->update_lock);
801 data->pwm_auto_pwm[ix][ap] = val;
802 vt1211_write8(data, VT1211_REG_PWM_AUTO_PWM(ix, ap),
803 data->pwm_auto_pwm[ix][ap]);
804 mutex_unlock(&data->update_lock);
809 /* ---------------------------------------------------------------------
810 * Miscellaneous sysfs interfaces (VRM, VID, name, and (legacy) alarms)
811 * --------------------------------------------------------------------- */
813 static ssize_t show_vrm(struct device *dev, struct device_attribute *attr,
816 struct vt1211_data *data = dev_get_drvdata(dev);
818 return sprintf(buf, "%d\n", data->vrm);
821 static ssize_t set_vrm(struct device *dev, struct device_attribute *attr,
822 const char *buf, size_t count)
824 struct vt1211_data *data = dev_get_drvdata(dev);
825 long val = simple_strtol(buf, NULL, 10);
832 static ssize_t show_vid(struct device *dev, struct device_attribute *attr,
835 struct vt1211_data *data = dev_get_drvdata(dev);
837 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
840 static ssize_t show_name(struct device *dev,
841 struct device_attribute *attr, char *buf)
843 struct vt1211_data *data = dev_get_drvdata(dev);
845 return sprintf(buf, "%s\n", data->name);
848 static ssize_t show_alarms(struct device *dev,
849 struct device_attribute *attr, char *buf)
851 struct vt1211_data *data = vt1211_update_device(dev);
853 return sprintf(buf, "%d\n", data->alarms);
856 /* ---------------------------------------------------------------------
857 * Device attribute structs
858 * --------------------------------------------------------------------- */
860 #define SENSOR_ATTR_IN_INPUT(ix) \
861 SENSOR_ATTR_2(in##ix##_input, S_IRUGO, \
862 show_in, NULL, SHOW_IN_INPUT, ix)
864 static struct sensor_device_attribute_2 vt1211_sysfs_in_input[] = {
865 SENSOR_ATTR_IN_INPUT(0),
866 SENSOR_ATTR_IN_INPUT(1),
867 SENSOR_ATTR_IN_INPUT(2),
868 SENSOR_ATTR_IN_INPUT(3),
869 SENSOR_ATTR_IN_INPUT(4),
870 SENSOR_ATTR_IN_INPUT(5),
873 #define SENSOR_ATTR_IN_MIN(ix) \
874 SENSOR_ATTR_2(in##ix##_min, S_IRUGO | S_IWUSR, \
875 show_in, set_in, SHOW_SET_IN_MIN, ix)
877 static struct sensor_device_attribute_2 vt1211_sysfs_in_min[] = {
878 SENSOR_ATTR_IN_MIN(0),
879 SENSOR_ATTR_IN_MIN(1),
880 SENSOR_ATTR_IN_MIN(2),
881 SENSOR_ATTR_IN_MIN(3),
882 SENSOR_ATTR_IN_MIN(4),
883 SENSOR_ATTR_IN_MIN(5),
886 #define SENSOR_ATTR_IN_MAX(ix) \
887 SENSOR_ATTR_2(in##ix##_max, S_IRUGO | S_IWUSR, \
888 show_in, set_in, SHOW_SET_IN_MAX, ix)
890 static struct sensor_device_attribute_2 vt1211_sysfs_in_max[] = {
891 SENSOR_ATTR_IN_MAX(0),
892 SENSOR_ATTR_IN_MAX(1),
893 SENSOR_ATTR_IN_MAX(2),
894 SENSOR_ATTR_IN_MAX(3),
895 SENSOR_ATTR_IN_MAX(4),
896 SENSOR_ATTR_IN_MAX(5),
899 #define SENSOR_ATTR_IN_ALARM(ix) \
900 SENSOR_ATTR_2(in##ix##_alarm, S_IRUGO, \
901 show_in, NULL, SHOW_IN_ALARM, ix)
903 static struct sensor_device_attribute_2 vt1211_sysfs_in_alarm[] = {
904 SENSOR_ATTR_IN_ALARM(0),
905 SENSOR_ATTR_IN_ALARM(1),
906 SENSOR_ATTR_IN_ALARM(2),
907 SENSOR_ATTR_IN_ALARM(3),
908 SENSOR_ATTR_IN_ALARM(4),
909 SENSOR_ATTR_IN_ALARM(5),
912 #define SENSOR_ATTR_TEMP_INPUT(ix) \
913 SENSOR_ATTR_2(temp##ix##_input, S_IRUGO, \
914 show_temp, NULL, SHOW_TEMP_INPUT, ix-1)
916 static struct sensor_device_attribute_2 vt1211_sysfs_temp_input[] = {
917 SENSOR_ATTR_TEMP_INPUT(1),
918 SENSOR_ATTR_TEMP_INPUT(2),
919 SENSOR_ATTR_TEMP_INPUT(3),
920 SENSOR_ATTR_TEMP_INPUT(4),
921 SENSOR_ATTR_TEMP_INPUT(5),
922 SENSOR_ATTR_TEMP_INPUT(6),
923 SENSOR_ATTR_TEMP_INPUT(7),
926 #define SENSOR_ATTR_TEMP_MAX(ix) \
927 SENSOR_ATTR_2(temp##ix##_max, S_IRUGO | S_IWUSR, \
928 show_temp, set_temp, SHOW_SET_TEMP_MAX, ix-1)
930 static struct sensor_device_attribute_2 vt1211_sysfs_temp_max[] = {
931 SENSOR_ATTR_TEMP_MAX(1),
932 SENSOR_ATTR_TEMP_MAX(2),
933 SENSOR_ATTR_TEMP_MAX(3),
934 SENSOR_ATTR_TEMP_MAX(4),
935 SENSOR_ATTR_TEMP_MAX(5),
936 SENSOR_ATTR_TEMP_MAX(6),
937 SENSOR_ATTR_TEMP_MAX(7),
940 #define SENSOR_ATTR_TEMP_MAX_HYST(ix) \
941 SENSOR_ATTR_2(temp##ix##_max_hyst, S_IRUGO | S_IWUSR, \
942 show_temp, set_temp, SHOW_SET_TEMP_MAX_HYST, ix-1)
944 static struct sensor_device_attribute_2 vt1211_sysfs_temp_max_hyst[] = {
945 SENSOR_ATTR_TEMP_MAX_HYST(1),
946 SENSOR_ATTR_TEMP_MAX_HYST(2),
947 SENSOR_ATTR_TEMP_MAX_HYST(3),
948 SENSOR_ATTR_TEMP_MAX_HYST(4),
949 SENSOR_ATTR_TEMP_MAX_HYST(5),
950 SENSOR_ATTR_TEMP_MAX_HYST(6),
951 SENSOR_ATTR_TEMP_MAX_HYST(7),
954 #define SENSOR_ATTR_TEMP_ALARM(ix) \
955 SENSOR_ATTR_2(temp##ix##_alarm, S_IRUGO, \
956 show_temp, NULL, SHOW_TEMP_ALARM, ix-1)
958 static struct sensor_device_attribute_2 vt1211_sysfs_temp_alarm[] = {
959 SENSOR_ATTR_TEMP_ALARM(1),
960 SENSOR_ATTR_TEMP_ALARM(2),
961 SENSOR_ATTR_TEMP_ALARM(3),
962 SENSOR_ATTR_TEMP_ALARM(4),
963 SENSOR_ATTR_TEMP_ALARM(5),
964 SENSOR_ATTR_TEMP_ALARM(6),
965 SENSOR_ATTR_TEMP_ALARM(7),
968 #define SENSOR_ATTR_FAN(ix) \
969 SENSOR_ATTR_2(fan##ix##_input, S_IRUGO, \
970 show_fan, NULL, SHOW_FAN_INPUT, ix-1), \
971 SENSOR_ATTR_2(fan##ix##_min, S_IRUGO | S_IWUSR, \
972 show_fan, set_fan, SHOW_SET_FAN_MIN, ix-1), \
973 SENSOR_ATTR_2(fan##ix##_div, S_IRUGO | S_IWUSR, \
974 show_fan, set_fan, SHOW_SET_FAN_DIV, ix-1), \
975 SENSOR_ATTR_2(fan##ix##_alarm, S_IRUGO, \
976 show_fan, NULL, SHOW_FAN_ALARM, ix-1)
978 #define SENSOR_ATTR_PWM(ix) \
979 SENSOR_ATTR_2(pwm##ix, S_IRUGO, \
980 show_pwm, NULL, SHOW_PWM, ix-1), \
981 SENSOR_ATTR_2(pwm##ix##_enable, S_IRUGO | S_IWUSR, \
982 show_pwm, set_pwm, SHOW_SET_PWM_ENABLE, ix-1), \
983 SENSOR_ATTR_2(pwm##ix##_auto_channels_temp, S_IRUGO | S_IWUSR, \
984 show_pwm, set_pwm, SHOW_SET_PWM_AUTO_CHANNELS_TEMP, ix-1)
986 #define SENSOR_ATTR_PWM_FREQ(ix) \
987 SENSOR_ATTR_2(pwm##ix##_freq, S_IRUGO | S_IWUSR, \
988 show_pwm, set_pwm, SHOW_SET_PWM_FREQ, ix-1)
990 #define SENSOR_ATTR_PWM_FREQ_RO(ix) \
991 SENSOR_ATTR_2(pwm##ix##_freq, S_IRUGO, \
992 show_pwm, NULL, SHOW_SET_PWM_FREQ, ix-1)
994 #define SENSOR_ATTR_PWM_AUTO_POINT_TEMP(ix, ap) \
995 SENSOR_ATTR_2(pwm##ix##_auto_point##ap##_temp, S_IRUGO | S_IWUSR, \
996 show_pwm_auto_point_temp, set_pwm_auto_point_temp, \
999 #define SENSOR_ATTR_PWM_AUTO_POINT_TEMP_RO(ix, ap) \
1000 SENSOR_ATTR_2(pwm##ix##_auto_point##ap##_temp, S_IRUGO, \
1001 show_pwm_auto_point_temp, NULL, \
1004 #define SENSOR_ATTR_PWM_AUTO_POINT_PWM(ix, ap) \
1005 SENSOR_ATTR_2(pwm##ix##_auto_point##ap##_pwm, S_IRUGO | S_IWUSR, \
1006 show_pwm_auto_point_pwm, set_pwm_auto_point_pwm, \
1009 #define SENSOR_ATTR_PWM_AUTO_POINT_PWM_RO(ix, ap) \
1010 SENSOR_ATTR_2(pwm##ix##_auto_point##ap##_pwm, S_IRUGO, \
1011 show_pwm_auto_point_pwm, NULL, \
1014 static struct sensor_device_attribute_2 vt1211_sysfs_fan_pwm[] = {
1019 SENSOR_ATTR_PWM_FREQ(1),
1020 SENSOR_ATTR_PWM_FREQ_RO(2),
1021 SENSOR_ATTR_PWM_AUTO_POINT_TEMP(1, 1),
1022 SENSOR_ATTR_PWM_AUTO_POINT_TEMP(1, 2),
1023 SENSOR_ATTR_PWM_AUTO_POINT_TEMP(1, 3),
1024 SENSOR_ATTR_PWM_AUTO_POINT_TEMP(1, 4),
1025 SENSOR_ATTR_PWM_AUTO_POINT_TEMP_RO(2, 1),
1026 SENSOR_ATTR_PWM_AUTO_POINT_TEMP_RO(2, 2),
1027 SENSOR_ATTR_PWM_AUTO_POINT_TEMP_RO(2, 3),
1028 SENSOR_ATTR_PWM_AUTO_POINT_TEMP_RO(2, 4),
1029 SENSOR_ATTR_PWM_AUTO_POINT_PWM_RO(1, 1),
1030 SENSOR_ATTR_PWM_AUTO_POINT_PWM(1, 2),
1031 SENSOR_ATTR_PWM_AUTO_POINT_PWM(1, 3),
1032 SENSOR_ATTR_PWM_AUTO_POINT_PWM_RO(1, 4),
1033 SENSOR_ATTR_PWM_AUTO_POINT_PWM_RO(2, 1),
1034 SENSOR_ATTR_PWM_AUTO_POINT_PWM(2, 2),
1035 SENSOR_ATTR_PWM_AUTO_POINT_PWM(2, 3),
1036 SENSOR_ATTR_PWM_AUTO_POINT_PWM_RO(2, 4),
1039 static struct device_attribute vt1211_sysfs_misc[] = {
1040 __ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm),
1041 __ATTR(cpu0_vid, S_IRUGO, show_vid, NULL),
1042 __ATTR(name, S_IRUGO, show_name, NULL),
1043 __ATTR(alarms, S_IRUGO, show_alarms, NULL),
1046 /* ---------------------------------------------------------------------
1047 * Device registration and initialization
1048 * --------------------------------------------------------------------- */
1050 static void __devinit vt1211_init_device(struct vt1211_data *data)
1053 data->vrm = vid_which_vrm();
1055 /* Read (and initialize) UCH config */
1056 data->uch_config = vt1211_read8(data, VT1211_REG_UCH_CONFIG);
1057 if (uch_config > -1) {
1058 data->uch_config = (data->uch_config & 0x83) |
1060 vt1211_write8(data, VT1211_REG_UCH_CONFIG, data->uch_config);
1063 /* Initialize the interrupt mode (if request at module load time).
1064 * The VT1211 implements 3 different modes for clearing interrupts:
1065 * 0: Clear INT when status register is read. Regenerate INT as long
1066 * as temp stays above hysteresis limit.
1067 * 1: Clear INT when status register is read. DON'T regenerate INT
1068 * until temp falls below hysteresis limit and exceeds hot limit
1070 * 2: Clear INT when temp falls below max limit.
1072 * The driver only allows to force mode 0 since that's the only one
1073 * that makes sense for 'sensors' */
1074 if (int_mode == 0) {
1075 vt1211_write8(data, VT1211_REG_TEMP1_CONFIG, 0);
1076 vt1211_write8(data, VT1211_REG_TEMP2_CONFIG, 0);
1079 /* Fill in some hard wired values into our data struct */
1080 data->pwm_auto_pwm[0][3] = 255;
1081 data->pwm_auto_pwm[1][3] = 255;
1084 static void vt1211_remove_sysfs(struct platform_device *pdev)
1086 struct device *dev = &pdev->dev;
1089 for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_in_input); i++) {
1090 device_remove_file(dev,
1091 &vt1211_sysfs_in_input[i].dev_attr);
1092 device_remove_file(dev,
1093 &vt1211_sysfs_in_min[i].dev_attr);
1094 device_remove_file(dev,
1095 &vt1211_sysfs_in_max[i].dev_attr);
1096 device_remove_file(dev,
1097 &vt1211_sysfs_in_alarm[i].dev_attr);
1099 for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_temp_input); i++) {
1100 device_remove_file(dev,
1101 &vt1211_sysfs_temp_input[i].dev_attr);
1102 device_remove_file(dev,
1103 &vt1211_sysfs_temp_max[i].dev_attr);
1104 device_remove_file(dev,
1105 &vt1211_sysfs_temp_max_hyst[i].dev_attr);
1106 device_remove_file(dev,
1107 &vt1211_sysfs_temp_alarm[i].dev_attr);
1109 for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_fan_pwm); i++) {
1110 device_remove_file(dev,
1111 &vt1211_sysfs_fan_pwm[i].dev_attr);
1113 for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_misc); i++) {
1114 device_remove_file(dev, &vt1211_sysfs_misc[i]);
1118 static int __devinit vt1211_probe(struct platform_device *pdev)
1120 struct device *dev = &pdev->dev;
1121 struct vt1211_data *data;
1122 struct resource *res;
1125 if (!(data = kzalloc(sizeof(struct vt1211_data), GFP_KERNEL))) {
1127 dev_err(dev, "Out of memory\n");
1131 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
1132 data->addr = res->start;
1133 data->name = DRVNAME;
1134 mutex_init(&data->update_lock);
1136 platform_set_drvdata(pdev, data);
1138 /* Initialize the VT1211 chip */
1139 vt1211_init_device(data);
1141 /* Create sysfs interface files */
1142 for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_in_input); i++) {
1143 if (ISVOLT(i, data->uch_config)) {
1144 if ((err = device_create_file(dev,
1145 &vt1211_sysfs_in_input[i].dev_attr)) ||
1146 (err = device_create_file(dev,
1147 &vt1211_sysfs_in_min[i].dev_attr)) ||
1148 (err = device_create_file(dev,
1149 &vt1211_sysfs_in_max[i].dev_attr)) ||
1150 (err = device_create_file(dev,
1151 &vt1211_sysfs_in_alarm[i].dev_attr))) {
1152 goto EXIT_DEV_REMOVE;
1156 for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_temp_input); i++) {
1157 if (ISTEMP(i, data->uch_config)) {
1158 if ((err = device_create_file(dev,
1159 &vt1211_sysfs_temp_input[i].dev_attr)) ||
1160 (err = device_create_file(dev,
1161 &vt1211_sysfs_temp_max[i].dev_attr)) ||
1162 (err = device_create_file(dev,
1163 &vt1211_sysfs_temp_max_hyst[i].dev_attr)) ||
1164 (err = device_create_file(dev,
1165 &vt1211_sysfs_temp_alarm[i].dev_attr))) {
1166 goto EXIT_DEV_REMOVE;
1170 for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_fan_pwm); i++) {
1171 err = device_create_file(dev,
1172 &vt1211_sysfs_fan_pwm[i].dev_attr);
1174 goto EXIT_DEV_REMOVE;
1177 for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_misc); i++) {
1178 err = device_create_file(dev,
1179 &vt1211_sysfs_misc[i]);
1181 goto EXIT_DEV_REMOVE;
1185 /* Register device */
1186 data->class_dev = hwmon_device_register(dev);
1187 if (IS_ERR(data->class_dev)) {
1188 err = PTR_ERR(data->class_dev);
1189 dev_err(dev, "Class registration failed (%d)\n", err);
1190 goto EXIT_DEV_REMOVE_SILENT;
1196 dev_err(dev, "Sysfs interface creation failed (%d)\n", err);
1197 EXIT_DEV_REMOVE_SILENT:
1198 vt1211_remove_sysfs(pdev);
1199 platform_set_drvdata(pdev, NULL);
1205 static int __devexit vt1211_remove(struct platform_device *pdev)
1207 struct vt1211_data *data = platform_get_drvdata(pdev);
1209 hwmon_device_unregister(data->class_dev);
1210 vt1211_remove_sysfs(pdev);
1211 platform_set_drvdata(pdev, NULL);
1217 static struct platform_driver vt1211_driver = {
1219 .owner = THIS_MODULE,
1222 .probe = vt1211_probe,
1223 .remove = __devexit_p(vt1211_remove),
1226 static int __init vt1211_device_add(unsigned short address)
1228 struct resource res = {
1230 .end = address + 0x7f,
1231 .flags = IORESOURCE_IO,
1235 pdev = platform_device_alloc(DRVNAME, address);
1238 printk(KERN_ERR DRVNAME ": Device allocation failed (%d)\n",
1243 res.name = pdev->name;
1244 err = platform_device_add_resources(pdev, &res, 1);
1246 printk(KERN_ERR DRVNAME ": Device resource addition failed "
1251 err = platform_device_add(pdev);
1253 printk(KERN_ERR DRVNAME ": Device addition failed (%d)\n",
1261 platform_device_put(pdev);
1266 static int __init vt1211_find(unsigned short *address)
1272 if (superio_inb(SIO_VT1211_DEVID) != SIO_VT1211_ID) {
1276 superio_select(SIO_VT1211_LDN_HWMON);
1278 if ((superio_inb(SIO_VT1211_ACTIVE) & 1) == 0) {
1279 printk(KERN_WARNING DRVNAME ": HW monitor is disabled, "
1284 *address = ((superio_inb(SIO_VT1211_BADDR) << 8) |
1285 (superio_inb(SIO_VT1211_BADDR + 1))) & 0xff00;
1286 if (*address == 0) {
1287 printk(KERN_WARNING DRVNAME ": Base address is not set, "
1293 printk(KERN_INFO DRVNAME ": Found VT1211 chip at 0x%04x, "
1294 "revision %u\n", *address, superio_inb(SIO_VT1211_DEVREV));
1301 static int __init vt1211_init(void)
1304 unsigned short address = 0;
1306 err = vt1211_find(&address);
1311 if ((uch_config < -1) || (uch_config > 31)) {
1313 printk(KERN_WARNING DRVNAME ": Invalid UCH configuration %d. "
1314 "Choose a value between 0 and 31.\n", uch_config);
1318 if ((int_mode < -1) || (int_mode > 0)) {
1320 printk(KERN_WARNING DRVNAME ": Invalid interrupt mode %d. "
1321 "Only mode 0 is supported.\n", int_mode);
1325 err = platform_driver_register(&vt1211_driver);
1330 /* Sets global pdev as a side effect */
1331 err = vt1211_device_add(address);
1333 goto EXIT_DRV_UNREGISTER;
1338 EXIT_DRV_UNREGISTER:
1339 platform_driver_unregister(&vt1211_driver);
1344 static void __exit vt1211_exit(void)
1346 platform_device_unregister(pdev);
1347 platform_driver_unregister(&vt1211_driver);
1350 MODULE_AUTHOR("Juerg Haefliger <juergh@gmail.com>");
1351 MODULE_DESCRIPTION("VT1211 sensors");
1352 MODULE_LICENSE("GPL");
1354 module_init(vt1211_init);
1355 module_exit(vt1211_exit);