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[linux.git] / drivers / hwmon / vt1211.c
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ab41319e
JH		 1/*
2 * vt1211.c - driver for the VIA VT1211 Super-I/O chip integrated hardware
3 * monitoring features
4 * Copyright (C) 2006 Juerg Haefliger <[email protected]>
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
5ed9ba6b
JP		 24#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
25
ab41319e
JH		 26#include <linux/module.h>
27#include <linux/init.h>
28#include <linux/slab.h>
29#include <linux/jiffies.h>
30#include <linux/platform_device.h>
31#include <linux/hwmon.h>
32#include <linux/hwmon-sysfs.h>
33#include <linux/hwmon-vid.h>
34#include <linux/err.h>
35#include <linux/mutex.h>
ce7ee4e8 36#include <linux/ioport.h>
b9acb64a 37#include <linux/acpi.h>
6055fae8 38#include <linux/io.h>
ab41319e
JH		 39
40static int uch_config = -1;
41module_param(uch_config, int, 0);
42MODULE_PARM_DESC(uch_config, "Initialize the universal channel configuration");
43
44static int int_mode = -1;
45module_param(int_mode, int, 0);
46MODULE_PARM_DESC(int_mode, "Force the temperature interrupt mode");
47
67b671bc
JD		 48static unsigned short force_id;
49module_param(force_id, ushort, 0);
50MODULE_PARM_DESC(force_id, "Override the detected device ID");
51
ab41319e
JH		 52static struct platform_device *pdev;
53
54#define DRVNAME "vt1211"
55
56/* ---------------------------------------------------------------------
57 * Registers
58 *
59 * The sensors are defined as follows.
60 *
61 * Sensor Voltage Mode Temp Mode Notes (from the datasheet)
62 * -------- ------------ --------- --------------------------
63 * Reading 1 temp1 Intel thermal diode
64 * Reading 3 temp2 Internal thermal diode
65 * UCH1/Reading2 in0 temp3 NTC type thermistor
66 * UCH2 in1 temp4 +2.5V
67 * UCH3 in2 temp5 VccP
68 * UCH4 in3 temp6 +5V
69 * UCH5 in4 temp7 +12V
70 * 3.3V in5 Internal VDD (+3.3V)
71 *
72 * --------------------------------------------------------------------- */
73
74/* Voltages (in) numbered 0-5 (ix) */
75#define VT1211_REG_IN(ix) (0x21 + (ix))
76#define VT1211_REG_IN_MIN(ix) ((ix) == 0 ? 0x3e : 0x2a + 2 * (ix))
77#define VT1211_REG_IN_MAX(ix) ((ix) == 0 ? 0x3d : 0x29 + 2 * (ix))
78
79/* Temperatures (temp) numbered 0-6 (ix) */
80static u8 regtemp[] = {0x1f, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25};
81static u8 regtempmax[] = {0x39, 0x1d, 0x3d, 0x2b, 0x2d, 0x2f, 0x31};
82static u8 regtemphyst[] = {0x3a, 0x1e, 0x3e, 0x2c, 0x2e, 0x30, 0x32};
83
84/* Fans numbered 0-1 (ix) */
85#define VT1211_REG_FAN(ix) (0x29 + (ix))
86#define VT1211_REG_FAN_MIN(ix) (0x3b + (ix))
87#define VT1211_REG_FAN_DIV 0x47
88
89/* PWMs numbered 0-1 (ix) */
90/* Auto points numbered 0-3 (ap) */
91#define VT1211_REG_PWM(ix) (0x60 + (ix))
92#define VT1211_REG_PWM_CLK 0x50
93#define VT1211_REG_PWM_CTL 0x51
94#define VT1211_REG_PWM_AUTO_TEMP(ap) (0x55 - (ap))
95#define VT1211_REG_PWM_AUTO_PWM(ix, ap) (0x58 + 2 * (ix) - (ap))
96
97/* Miscellaneous registers */
98#define VT1211_REG_CONFIG 0x40
99#define VT1211_REG_ALARM1 0x41
100#define VT1211_REG_ALARM2 0x42
101#define VT1211_REG_VID 0x45
102#define VT1211_REG_UCH_CONFIG 0x4a
103#define VT1211_REG_TEMP1_CONFIG 0x4b
104#define VT1211_REG_TEMP2_CONFIG 0x4c
105
106/* In, temp & fan alarm bits */
107static const u8 bitalarmin[] = {11, 0, 1, 3, 8, 2, 9};
108static const u8 bitalarmtemp[] = {4, 15, 11, 0, 1, 3, 8};
109static const u8 bitalarmfan[] = {6, 7};
110
111/* ---------------------------------------------------------------------
112 * Data structures and manipulation thereof
113 * --------------------------------------------------------------------- */
114
115struct vt1211_data {
116 unsigned short addr;
117 const char *name;
1beeffe4 118 struct device *hwmon_dev;
ab41319e
JH		 119
120 struct mutex update_lock;
121 char valid; /* !=0 if following fields are valid */
122 unsigned long last_updated; /* In jiffies */
123
124 /* Register values */
125 u8 in[6];
126 u8 in_max[6];
127 u8 in_min[6];
128 u8 temp[7];
129 u8 temp_max[7];
130 u8 temp_hyst[7];
131 u8 fan[2];
132 u8 fan_min[2];
133 u8 fan_div[2];
134 u8 fan_ctl;
135 u8 pwm[2];
136 u8 pwm_ctl[2];
137 u8 pwm_clk;
138 u8 pwm_auto_temp[4];
139 u8 pwm_auto_pwm[2][4];
140 u8 vid; /* Read once at init time */
141 u8 vrm;
142 u8 uch_config; /* Read once at init time */
143 u16 alarms;
144};
145
146/* ix = [0-5] */
147#define ISVOLT(ix, uch_config) ((ix) > 4 ? 1 : \
148 !(((uch_config) >> ((ix) + 2)) & 1))
149
150/* ix = [0-6] */
151#define ISTEMP(ix, uch_config) ((ix) < 2 ? 1 : \
152 ((uch_config) >> (ix)) & 1)
153
b162c033
GR		 154/*
155 * in5 (ix = 5) is special. It's the internal 3.3V so it's scaled in the
156 * driver according to the VT1211 BIOS porting guide
157 */
ab41319e
JH		 158#define IN_FROM_REG(ix, reg) ((reg) < 3 ? 0 : (ix) == 5 ? \
159 (((reg) - 3) * 15882 + 479) / 958 : \
160 (((reg) - 3) * 10000 + 479) / 958)
161#define IN_TO_REG(ix, val) (SENSORS_LIMIT((ix) == 5 ? \
162 ((val) * 958 + 7941) / 15882 + 3 : \
163 ((val) * 958 + 5000) / 10000 + 3, 0, 255))
164
b162c033
GR		 165/*
166 * temp1 (ix = 0) is an intel thermal diode which is scaled in user space.
167 * temp2 (ix = 1) is the internal temp diode so it's scaled in the driver
168 * according to some measurements that I took on an EPIA M10000.
169 * temp3-7 are thermistor based so the driver returns the voltage measured at
170 * the pin (range 0V - 2.2V).
171 */
ab41319e
JH		 172#define TEMP_FROM_REG(ix, reg) ((ix) == 0 ? (reg) * 1000 : \
173 (ix) == 1 ? (reg) < 51 ? 0 : \
174 ((reg) - 51) * 1000 : \
175 ((253 - (reg)) * 2200 + 105) / 210)
176#define TEMP_TO_REG(ix, val) SENSORS_LIMIT( \
177 ((ix) == 0 ? ((val) + 500) / 1000 : \
178 (ix) == 1 ? ((val) + 500) / 1000 + 51 : \
179 253 - ((val) * 210 + 1100) / 2200), 0, 255)
180
181#define DIV_FROM_REG(reg) (1 << (reg))
182
183#define RPM_FROM_REG(reg, div) (((reg) == 0) || ((reg) == 255) ? 0 : \
184 1310720 / (reg) / DIV_FROM_REG(div))
185#define RPM_TO_REG(val, div) ((val) == 0 ? 255 : \
186 SENSORS_LIMIT((1310720 / (val) / \
187 DIV_FROM_REG(div)), 1, 254))
188
189/* ---------------------------------------------------------------------
190 * Super-I/O constants and functions
191 * --------------------------------------------------------------------- */
192
b162c033
GR		 193/*
194 * Configuration index port registers
195 * The vt1211 can live at 2 different addresses so we need to probe both
196 */
2219cd81
JH		 197#define SIO_REG_CIP1 0x2e
198#define SIO_REG_CIP2 0x4e
ab41319e
JH		 199
200/* Configuration registers */
201#define SIO_VT1211_LDN 0x07 /* logical device number */
202#define SIO_VT1211_DEVID 0x20 /* device ID */
203#define SIO_VT1211_DEVREV 0x21 /* device revision */
204#define SIO_VT1211_ACTIVE 0x30 /* HW monitor active */
205#define SIO_VT1211_BADDR 0x60 /* base I/O address */
206#define SIO_VT1211_ID 0x3c /* VT1211 device ID */
207
208/* VT1211 logical device numbers */
209#define SIO_VT1211_LDN_HWMON 0x0b /* HW monitor */
210
2219cd81 211static inline void superio_outb(int sio_cip, int reg, int val)
ab41319e 212{
2219cd81
JH		 213 outb(reg, sio_cip);
214 outb(val, sio_cip + 1);
ab41319e
JH		 215}
216
2219cd81 217static inline int superio_inb(int sio_cip, int reg)
ab41319e 218{
2219cd81
JH		 219 outb(reg, sio_cip);
220 return inb(sio_cip + 1);
ab41319e
JH		 221}
222
2219cd81 223static inline void superio_select(int sio_cip, int ldn)
ab41319e 224{
2219cd81
JH		 225 outb(SIO_VT1211_LDN, sio_cip);
226 outb(ldn, sio_cip + 1);
ab41319e
JH		 227}
228
2219cd81 229static inline void superio_enter(int sio_cip)
ab41319e 230{
2219cd81
JH		 231 outb(0x87, sio_cip);
232 outb(0x87, sio_cip);
ab41319e
JH		 233}
234
2219cd81 235static inline void superio_exit(int sio_cip)
ab41319e 236{
2219cd81 237 outb(0xaa, sio_cip);
ab41319e
JH		 238}
239
240/* ---------------------------------------------------------------------
241 * Device I/O access
242 * --------------------------------------------------------------------- */
243
244static inline u8 vt1211_read8(struct vt1211_data *data, u8 reg)
245{
246 return inb(data->addr + reg);
247}
248
249static inline void vt1211_write8(struct vt1211_data *data, u8 reg, u8 val)
250{
251 outb(val, data->addr + reg);
252}
253
254static struct vt1211_data *vt1211_update_device(struct device *dev)
255{
256 struct vt1211_data *data = dev_get_drvdata(dev);
257 int ix, val;
258
259 mutex_lock(&data->update_lock);
260
261 /* registers cache is refreshed after 1 second */
262 if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
263 /* read VID */
264 data->vid = vt1211_read8(data, VT1211_REG_VID) & 0x1f;
265
266 /* voltage (in) registers */
267 for (ix = 0; ix < ARRAY_SIZE(data->in); ix++) {
268 if (ISVOLT(ix, data->uch_config)) {
269 data->in[ix] = vt1211_read8(data,
270 VT1211_REG_IN(ix));
271 data->in_min[ix] = vt1211_read8(data,
272 VT1211_REG_IN_MIN(ix));
273 data->in_max[ix] = vt1211_read8(data,
274 VT1211_REG_IN_MAX(ix));
275 }
276 }
277
278 /* temp registers */
279 for (ix = 0; ix < ARRAY_SIZE(data->temp); ix++) {
280 if (ISTEMP(ix, data->uch_config)) {
281 data->temp[ix] = vt1211_read8(data,
282 regtemp[ix]);
283 data->temp_max[ix] = vt1211_read8(data,
284 regtempmax[ix]);
285 data->temp_hyst[ix] = vt1211_read8(data,
286 regtemphyst[ix]);
287 }
288 }
289
290 /* fan & pwm registers */
291 for (ix = 0; ix < ARRAY_SIZE(data->fan); ix++) {
292 data->fan[ix] = vt1211_read8(data,
293 VT1211_REG_FAN(ix));
294 data->fan_min[ix] = vt1211_read8(data,
295 VT1211_REG_FAN_MIN(ix));
296 data->pwm[ix] = vt1211_read8(data,
297 VT1211_REG_PWM(ix));
298 }
299 val = vt1211_read8(data, VT1211_REG_FAN_DIV);
300 data->fan_div[0] = (val >> 4) & 3;
301 data->fan_div[1] = (val >> 6) & 3;
302 data->fan_ctl = val & 0xf;
303
304 val = vt1211_read8(data, VT1211_REG_PWM_CTL);
305 data->pwm_ctl[0] = val & 0xf;
306 data->pwm_ctl[1] = (val >> 4) & 0xf;
307
308 data->pwm_clk = vt1211_read8(data, VT1211_REG_PWM_CLK);
309
310 /* pwm & temp auto point registers */
311 data->pwm_auto_pwm[0][1] = vt1211_read8(data,
312 VT1211_REG_PWM_AUTO_PWM(0, 1));
313 data->pwm_auto_pwm[0][2] = vt1211_read8(data,
314 VT1211_REG_PWM_AUTO_PWM(0, 2));
315 data->pwm_auto_pwm[1][1] = vt1211_read8(data,
316 VT1211_REG_PWM_AUTO_PWM(1, 1));
317 data->pwm_auto_pwm[1][2] = vt1211_read8(data,
318 VT1211_REG_PWM_AUTO_PWM(1, 2));
319 for (ix = 0; ix < ARRAY_SIZE(data->pwm_auto_temp); ix++) {
320 data->pwm_auto_temp[ix] = vt1211_read8(data,
321 VT1211_REG_PWM_AUTO_TEMP(ix));
322 }
323
324 /* alarm registers */
325 data->alarms = (vt1211_read8(data, VT1211_REG_ALARM2) << 8) |
326 vt1211_read8(data, VT1211_REG_ALARM1);
327
328 data->last_updated = jiffies;
329 data->valid = 1;
330 }
331
332 mutex_unlock(&data->update_lock);
333
334 return data;
335}
336
337/* ---------------------------------------------------------------------
338 * Voltage sysfs interfaces
339 * ix = [0-5]
340 * --------------------------------------------------------------------- */
341
342#define SHOW_IN_INPUT 0
343#define SHOW_SET_IN_MIN 1
344#define SHOW_SET_IN_MAX 2
345#define SHOW_IN_ALARM 3
346
347static ssize_t show_in(struct device *dev, struct device_attribute *attr,
348 char *buf)
349{
350 struct vt1211_data *data = vt1211_update_device(dev);
351 struct sensor_device_attribute_2 *sensor_attr_2 =
352 to_sensor_dev_attr_2(attr);
353 int ix = sensor_attr_2->index;
354 int fn = sensor_attr_2->nr;
355 int res;
356
357 switch (fn) {
358 case SHOW_IN_INPUT:
359 res = IN_FROM_REG(ix, data->in[ix]);
360 break;
361 case SHOW_SET_IN_MIN:
362 res = IN_FROM_REG(ix, data->in_min[ix]);
363 break;
364 case SHOW_SET_IN_MAX:
365 res = IN_FROM_REG(ix, data->in_max[ix]);
366 break;
367 case SHOW_IN_ALARM:
368 res = (data->alarms >> bitalarmin[ix]) & 1;
369 break;
370 default:
371 res = 0;
372 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn);
373 }
374
375 return sprintf(buf, "%d\n", res);
376}
377
378static ssize_t set_in(struct device *dev, struct device_attribute *attr,
379 const char *buf, size_t count)
380{
381 struct vt1211_data *data = dev_get_drvdata(dev);
382 struct sensor_device_attribute_2 *sensor_attr_2 =
383 to_sensor_dev_attr_2(attr);
384 int ix = sensor_attr_2->index;
385 int fn = sensor_attr_2->nr;
b162c033
GR		 386 long val;
387 int err;
388
389 err = kstrtol(buf, 10, &val);
390 if (err)
391 return err;
ab41319e
JH		 392
393 mutex_lock(&data->update_lock);
394 switch (fn) {
395 case SHOW_SET_IN_MIN:
396 data->in_min[ix] = IN_TO_REG(ix, val);
397 vt1211_write8(data, VT1211_REG_IN_MIN(ix), data->in_min[ix]);
398 break;
399 case SHOW_SET_IN_MAX:
400 data->in_max[ix] = IN_TO_REG(ix, val);
401 vt1211_write8(data, VT1211_REG_IN_MAX(ix), data->in_max[ix]);
402 break;
403 default:
404 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn);
405 }
406 mutex_unlock(&data->update_lock);
407
408 return count;
409}
410
411/* ---------------------------------------------------------------------
412 * Temperature sysfs interfaces
413 * ix = [0-6]
414 * --------------------------------------------------------------------- */
415
416#define SHOW_TEMP_INPUT 0
417#define SHOW_SET_TEMP_MAX 1
418#define SHOW_SET_TEMP_MAX_HYST 2
419#define SHOW_TEMP_ALARM 3
420
421static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
422 char *buf)
423{
424 struct vt1211_data *data = vt1211_update_device(dev);
425 struct sensor_device_attribute_2 *sensor_attr_2 =
426 to_sensor_dev_attr_2(attr);
427 int ix = sensor_attr_2->index;
428 int fn = sensor_attr_2->nr;
429 int res;
430
431 switch (fn) {
432 case SHOW_TEMP_INPUT:
433 res = TEMP_FROM_REG(ix, data->temp[ix]);
434 break;
435 case SHOW_SET_TEMP_MAX:
436 res = TEMP_FROM_REG(ix, data->temp_max[ix]);
437 break;
438 case SHOW_SET_TEMP_MAX_HYST:
439 res = TEMP_FROM_REG(ix, data->temp_hyst[ix]);
440 break;
441 case SHOW_TEMP_ALARM:
442 res = (data->alarms >> bitalarmtemp[ix]) & 1;
443 break;
444 default:
445 res = 0;
446 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn);
447 }
448
449 return sprintf(buf, "%d\n", res);
450}
451
452static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
453 const char *buf, size_t count)
454{
455 struct vt1211_data *data = dev_get_drvdata(dev);
456 struct sensor_device_attribute_2 *sensor_attr_2 =
457 to_sensor_dev_attr_2(attr);
458 int ix = sensor_attr_2->index;
459 int fn = sensor_attr_2->nr;
b162c033
GR		 460 long val;
461 int err;
462
463 err = kstrtol(buf, 10, &val);
464 if (err)
465 return err;
ab41319e
JH		 466
467 mutex_lock(&data->update_lock);
468 switch (fn) {
469 case SHOW_SET_TEMP_MAX:
470 data->temp_max[ix] = TEMP_TO_REG(ix, val);
471 vt1211_write8(data, regtempmax[ix],
472 data->temp_max[ix]);
473 break;
474 case SHOW_SET_TEMP_MAX_HYST:
475 data->temp_hyst[ix] = TEMP_TO_REG(ix, val);
476 vt1211_write8(data, regtemphyst[ix],
477 data->temp_hyst[ix]);
478 break;
479 default:
480 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn);
481 }
482 mutex_unlock(&data->update_lock);
483
484 return count;
485}
486
487/* ---------------------------------------------------------------------
488 * Fan sysfs interfaces
489 * ix = [0-1]
490 * --------------------------------------------------------------------- */
491
492#define SHOW_FAN_INPUT 0
493#define SHOW_SET_FAN_MIN 1
494#define SHOW_SET_FAN_DIV 2
495#define SHOW_FAN_ALARM 3
496
497static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
498 char *buf)
499{
500 struct vt1211_data *data = vt1211_update_device(dev);
501 struct sensor_device_attribute_2 *sensor_attr_2 =
502 to_sensor_dev_attr_2(attr);
503 int ix = sensor_attr_2->index;
504 int fn = sensor_attr_2->nr;
505 int res;
506
507 switch (fn) {
508 case SHOW_FAN_INPUT:
509 res = RPM_FROM_REG(data->fan[ix], data->fan_div[ix]);
510 break;
511 case SHOW_SET_FAN_MIN:
512 res = RPM_FROM_REG(data->fan_min[ix], data->fan_div[ix]);
513 break;
514 case SHOW_SET_FAN_DIV:
515 res = DIV_FROM_REG(data->fan_div[ix]);
516 break;
517 case SHOW_FAN_ALARM:
518 res = (data->alarms >> bitalarmfan[ix]) & 1;
519 break;
520 default:
521 res = 0;
522 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn);
523 }
524
525 return sprintf(buf, "%d\n", res);
526}
527
528static ssize_t set_fan(struct device *dev, struct device_attribute *attr,
529 const char *buf, size_t count)
530{
531 struct vt1211_data *data = dev_get_drvdata(dev);
532 struct sensor_device_attribute_2 *sensor_attr_2 =
533 to_sensor_dev_attr_2(attr);
534 int ix = sensor_attr_2->index;
535 int fn = sensor_attr_2->nr;
ab41319e 536 int reg;
b162c033
GR		 537 unsigned long val;
538 int err;
539
540 err = kstrtoul(buf, 10, &val);
541 if (err)
542 return err;
ab41319e
JH		 543
544 mutex_lock(&data->update_lock);
545
546 /* sync the data cache */
547 reg = vt1211_read8(data, VT1211_REG_FAN_DIV);
548 data->fan_div[0] = (reg >> 4) & 3;
549 data->fan_div[1] = (reg >> 6) & 3;
550 data->fan_ctl = reg & 0xf;
551
552 switch (fn) {
553 case SHOW_SET_FAN_MIN:
554 data->fan_min[ix] = RPM_TO_REG(val, data->fan_div[ix]);
555 vt1211_write8(data, VT1211_REG_FAN_MIN(ix),
556 data->fan_min[ix]);
557 break;
558 case SHOW_SET_FAN_DIV:
559 switch (val) {
b162c033
GR		 560 case 1:
561 data->fan_div[ix] = 0;
562 break;
563 case 2:
564 data->fan_div[ix] = 1;
565 break;
566 case 4:
567 data->fan_div[ix] = 2;
568 break;
569 case 8:
570 data->fan_div[ix] = 3;
571 break;
572 default:
573 count = -EINVAL;
574 dev_warn(dev, "fan div value %ld not supported. "
575 "Choose one of 1, 2, 4, or 8.\n", val);
576 goto EXIT;
ab41319e
JH		 577 }
578 vt1211_write8(data, VT1211_REG_FAN_DIV,
579 ((data->fan_div[1] << 6) |
580 (data->fan_div[0] << 4) |
581 data->fan_ctl));
582 break;
583 default:
584 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn);
585 }
586
587EXIT:
588 mutex_unlock(&data->update_lock);
589 return count;
590}
591
592/* ---------------------------------------------------------------------
593 * PWM sysfs interfaces
594 * ix = [0-1]
595 * --------------------------------------------------------------------- */
596
597#define SHOW_PWM 0
598#define SHOW_SET_PWM_ENABLE 1
599#define SHOW_SET_PWM_FREQ 2
600#define SHOW_SET_PWM_AUTO_CHANNELS_TEMP 3
601
602static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
603 char *buf)
604{
605 struct vt1211_data *data = vt1211_update_device(dev);
606 struct sensor_device_attribute_2 *sensor_attr_2 =
607 to_sensor_dev_attr_2(attr);
608 int ix = sensor_attr_2->index;
609 int fn = sensor_attr_2->nr;
610 int res;
611
612 switch (fn) {
613 case SHOW_PWM:
614 res = data->pwm[ix];
615 break;
616 case SHOW_SET_PWM_ENABLE:
617 res = ((data->pwm_ctl[ix] >> 3) & 1) ? 2 : 0;
618 break;
619 case SHOW_SET_PWM_FREQ:
620 res = 90000 >> (data->pwm_clk & 7);
621 break;
622 case SHOW_SET_PWM_AUTO_CHANNELS_TEMP:
623 res = (data->pwm_ctl[ix] & 7) + 1;
624 break;
625 default:
626 res = 0;
627 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn);
628 }
629
630 return sprintf(buf, "%d\n", res);
631}
632
633static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
634 const char *buf, size_t count)
635{
636 struct vt1211_data *data = dev_get_drvdata(dev);
637 struct sensor_device_attribute_2 *sensor_attr_2 =
638 to_sensor_dev_attr_2(attr);
639 int ix = sensor_attr_2->index;
640 int fn = sensor_attr_2->nr;
ab41319e 641 int tmp, reg;
b162c033
GR		 642 unsigned long val;
643 int err;
644
645 err = kstrtoul(buf, 10, &val);
646 if (err)
647 return err;
ab41319e
JH		 648
649 mutex_lock(&data->update_lock);
650
651 switch (fn) {
652 case SHOW_SET_PWM_ENABLE:
653 /* sync the data cache */
654 reg = vt1211_read8(data, VT1211_REG_FAN_DIV);
655 data->fan_div[0] = (reg >> 4) & 3;
656 data->fan_div[1] = (reg >> 6) & 3;
657 data->fan_ctl = reg & 0xf;
658 reg = vt1211_read8(data, VT1211_REG_PWM_CTL);
659 data->pwm_ctl[0] = reg & 0xf;
660 data->pwm_ctl[1] = (reg >> 4) & 0xf;
661 switch (val) {
662 case 0:
663 data->pwm_ctl[ix] &= 7;
b162c033
GR		 664 /*
665 * disable SmartGuardian if both PWM outputs are
666 * disabled
667 */
668 if ((data->pwm_ctl[ix ^ 1] & 1) == 0)
ab41319e 669 data->fan_ctl &= 0xe;
ab41319e
JH		 670 break;
671 case 2:
672 data->pwm_ctl[ix] |= 8;
673 data->fan_ctl |= 1;
674 break;
675 default:
676 count = -EINVAL;
677 dev_warn(dev, "pwm mode %ld not supported. "
678 "Choose one of 0 or 2.\n", val);
679 goto EXIT;
680 }
681 vt1211_write8(data, VT1211_REG_PWM_CTL,
682 ((data->pwm_ctl[1] << 4) |
683 data->pwm_ctl[0]));
684 vt1211_write8(data, VT1211_REG_FAN_DIV,
685 ((data->fan_div[1] << 6) |
686 (data->fan_div[0] << 4) |
687 data->fan_ctl));
688 break;
689 case SHOW_SET_PWM_FREQ:
690 val = 135000 / SENSORS_LIMIT(val, 135000 >> 7, 135000);
691 /* calculate tmp = log2(val) */
692 tmp = 0;
b162c033 693 for (val >>= 1; val > 0; val >>= 1)
ab41319e 694 tmp++;
ab41319e
JH		 695 /* sync the data cache */
696 reg = vt1211_read8(data, VT1211_REG_PWM_CLK);
697 data->pwm_clk = (reg & 0xf8) | tmp;
698 vt1211_write8(data, VT1211_REG_PWM_CLK, data->pwm_clk);
699 break;
700 case SHOW_SET_PWM_AUTO_CHANNELS_TEMP:
b162c033 701 if (val < 1 || val > 7) {
ab41319e
JH		 702 count = -EINVAL;
703 dev_warn(dev, "temp channel %ld not supported. "
704 "Choose a value between 1 and 7.\n", val);
705 goto EXIT;
706 }
707 if (!ISTEMP(val - 1, data->uch_config)) {
708 count = -EINVAL;
709 dev_warn(dev, "temp channel %ld is not available.\n",
710 val);
711 goto EXIT;
712 }
713 /* sync the data cache */
714 reg = vt1211_read8(data, VT1211_REG_PWM_CTL);
715 data->pwm_ctl[0] = reg & 0xf;
716 data->pwm_ctl[1] = (reg >> 4) & 0xf;
717 data->pwm_ctl[ix] = (data->pwm_ctl[ix] & 8) | (val - 1);
718 vt1211_write8(data, VT1211_REG_PWM_CTL,
719 ((data->pwm_ctl[1] << 4) | data->pwm_ctl[0]));
720 break;
721 default:
722 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn);
723 }
724
725EXIT:
726 mutex_unlock(&data->update_lock);
727 return count;
728}
729
730/* ---------------------------------------------------------------------
731 * PWM auto point definitions
732 * ix = [0-1]
733 * ap = [0-3]
734 * --------------------------------------------------------------------- */
735
736/*
737 * pwm[ix+1]_auto_point[ap+1]_temp mapping table:
738 * Note that there is only a single set of temp auto points that controls both
739 * PWM controllers. We still create 2 sets of sysfs files to make it look
740 * more consistent even though they map to the same registers.
741 *
742 * ix ap : description
743 * -------------------
744 * 0 0 : pwm1/2 off temperature (pwm_auto_temp[0])
745 * 0 1 : pwm1/2 low speed temperature (pwm_auto_temp[1])
746 * 0 2 : pwm1/2 high speed temperature (pwm_auto_temp[2])
747 * 0 3 : pwm1/2 full speed temperature (pwm_auto_temp[3])
748 * 1 0 : pwm1/2 off temperature (pwm_auto_temp[0])
749 * 1 1 : pwm1/2 low speed temperature (pwm_auto_temp[1])
750 * 1 2 : pwm1/2 high speed temperature (pwm_auto_temp[2])
751 * 1 3 : pwm1/2 full speed temperature (pwm_auto_temp[3])
752 */
753
754static ssize_t show_pwm_auto_point_temp(struct device *dev,
755 struct device_attribute *attr,
756 char *buf)
757{
758 struct vt1211_data *data = vt1211_update_device(dev);
759 struct sensor_device_attribute_2 *sensor_attr_2 =
760 to_sensor_dev_attr_2(attr);
761 int ix = sensor_attr_2->index;
762 int ap = sensor_attr_2->nr;
763
764 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->pwm_ctl[ix] & 7,
765 data->pwm_auto_temp[ap]));
766}
767
768static ssize_t set_pwm_auto_point_temp(struct device *dev,
769 struct device_attribute *attr,
770 const char *buf, size_t count)
771{
772 struct vt1211_data *data = dev_get_drvdata(dev);
773 struct sensor_device_attribute_2 *sensor_attr_2 =
774 to_sensor_dev_attr_2(attr);
775 int ix = sensor_attr_2->index;
776 int ap = sensor_attr_2->nr;
ab41319e 777 int reg;
b162c033
GR		 778 long val;
779 int err;
780
781 err = kstrtol(buf, 10, &val);
782 if (err)
783 return err;
784
ab41319e
JH		 785
786 mutex_lock(&data->update_lock);
787
788 /* sync the data cache */
789 reg = vt1211_read8(data, VT1211_REG_PWM_CTL);
790 data->pwm_ctl[0] = reg & 0xf;
791 data->pwm_ctl[1] = (reg >> 4) & 0xf;
792
793 data->pwm_auto_temp[ap] = TEMP_TO_REG(data->pwm_ctl[ix] & 7, val);
794 vt1211_write8(data, VT1211_REG_PWM_AUTO_TEMP(ap),
795 data->pwm_auto_temp[ap]);
796 mutex_unlock(&data->update_lock);
797
798 return count;
799}
800
801/*
802 * pwm[ix+1]_auto_point[ap+1]_pwm mapping table:
803 * Note that the PWM auto points 0 & 3 are hard-wired in the VT1211 and can't
804 * be changed.
805 *
806 * ix ap : description
807 * -------------------
808 * 0 0 : pwm1 off (pwm_auto_pwm[0][0], hard-wired to 0)
809 * 0 1 : pwm1 low speed duty cycle (pwm_auto_pwm[0][1])
810 * 0 2 : pwm1 high speed duty cycle (pwm_auto_pwm[0][2])
811 * 0 3 : pwm1 full speed (pwm_auto_pwm[0][3], hard-wired to 255)
812 * 1 0 : pwm2 off (pwm_auto_pwm[1][0], hard-wired to 0)
813 * 1 1 : pwm2 low speed duty cycle (pwm_auto_pwm[1][1])
814 * 1 2 : pwm2 high speed duty cycle (pwm_auto_pwm[1][2])
815 * 1 3 : pwm2 full speed (pwm_auto_pwm[1][3], hard-wired to 255)
b162c033 816 */
ab41319e
JH		 817
818static ssize_t show_pwm_auto_point_pwm(struct device *dev,
819 struct device_attribute *attr,
820 char *buf)
821{
822 struct vt1211_data *data = vt1211_update_device(dev);
823 struct sensor_device_attribute_2 *sensor_attr_2 =
824 to_sensor_dev_attr_2(attr);
825 int ix = sensor_attr_2->index;
826 int ap = sensor_attr_2->nr;
827
828 return sprintf(buf, "%d\n", data->pwm_auto_pwm[ix][ap]);
829}
830
831static ssize_t set_pwm_auto_point_pwm(struct device *dev,
832 struct device_attribute *attr,
833 const char *buf, size_t count)
834{
835 struct vt1211_data *data = dev_get_drvdata(dev);
836 struct sensor_device_attribute_2 *sensor_attr_2 =
837 to_sensor_dev_attr_2(attr);
838 int ix = sensor_attr_2->index;
839 int ap = sensor_attr_2->nr;
b162c033
GR		 840 unsigned long val;
841 int err;
ab41319e 842
b162c033
GR		 843 err = kstrtoul(buf, 10, &val);
844 if (err)
845 return err;
ab41319e
JH		 846
847 mutex_lock(&data->update_lock);
b162c033 848 data->pwm_auto_pwm[ix][ap] = SENSORS_LIMIT(val, 0, 255);
ab41319e
JH		 849 vt1211_write8(data, VT1211_REG_PWM_AUTO_PWM(ix, ap),
850 data->pwm_auto_pwm[ix][ap]);
851 mutex_unlock(&data->update_lock);
852
853 return count;
854}
855
856/* ---------------------------------------------------------------------
857 * Miscellaneous sysfs interfaces (VRM, VID, name, and (legacy) alarms)
858 * --------------------------------------------------------------------- */
859
860static ssize_t show_vrm(struct device *dev, struct device_attribute *attr,
861 char *buf)
862{
863 struct vt1211_data *data = dev_get_drvdata(dev);
864
865 return sprintf(buf, "%d\n", data->vrm);
866}
867
868static ssize_t set_vrm(struct device *dev, struct device_attribute *attr,
869 const char *buf, size_t count)
870{
871 struct vt1211_data *data = dev_get_drvdata(dev);
b162c033
GR		 872 unsigned long val;
873 int err;
874
875 err = kstrtoul(buf, 10, &val);
876 if (err)
877 return err;
ab41319e
JH		 878
879 data->vrm = val;
880
881 return count;
882}
883
884static ssize_t show_vid(struct device *dev, struct device_attribute *attr,
885 char *buf)
886{
887 struct vt1211_data *data = dev_get_drvdata(dev);
888
889 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
890}
891
892static ssize_t show_name(struct device *dev,
893 struct device_attribute *attr, char *buf)
894{
895 struct vt1211_data *data = dev_get_drvdata(dev);
896
897 return sprintf(buf, "%s\n", data->name);
898}
899
900static ssize_t show_alarms(struct device *dev,
901 struct device_attribute *attr, char *buf)
902{
903 struct vt1211_data *data = vt1211_update_device(dev);
904
905 return sprintf(buf, "%d\n", data->alarms);
906}
907
908/* ---------------------------------------------------------------------
909 * Device attribute structs
910 * --------------------------------------------------------------------- */
911
2185696d
GR		 912#define SENSOR_ATTR_IN(ix) \
913{ SENSOR_ATTR_2(in##ix##_input, S_IRUGO, \
914 show_in, NULL, SHOW_IN_INPUT, ix), \
ab41319e 915 SENSOR_ATTR_2(in##ix##_min, S_IRUGO | S_IWUSR, \
2185696d 916 show_in, set_in, SHOW_SET_IN_MIN, ix), \
ab41319e 917 SENSOR_ATTR_2(in##ix##_max, S_IRUGO | S_IWUSR, \
2185696d
GR		 918 show_in, set_in, SHOW_SET_IN_MAX, ix), \
919 SENSOR_ATTR_2(in##ix##_alarm, S_IRUGO, \
920 show_in, NULL, SHOW_IN_ALARM, ix) \
921}
922
923static struct sensor_device_attribute_2 vt1211_sysfs_in[][4] = {
924 SENSOR_ATTR_IN(0),
925 SENSOR_ATTR_IN(1),
926 SENSOR_ATTR_IN(2),
927 SENSOR_ATTR_IN(3),
928 SENSOR_ATTR_IN(4),
929 SENSOR_ATTR_IN(5)
ab41319e
JH		 930};
931
2185696d
GR		 932#define IN_UNIT_ATTRS(X) \
933{ &vt1211_sysfs_in[X][0].dev_attr.attr, \
934 &vt1211_sysfs_in[X][1].dev_attr.attr, \
935 &vt1211_sysfs_in[X][2].dev_attr.attr, \
936 &vt1211_sysfs_in[X][3].dev_attr.attr, \
937 NULL \
938}
939
940static struct attribute *vt1211_in_attr[][5] = {
941 IN_UNIT_ATTRS(0),
942 IN_UNIT_ATTRS(1),
943 IN_UNIT_ATTRS(2),
944 IN_UNIT_ATTRS(3),
945 IN_UNIT_ATTRS(4),
946 IN_UNIT_ATTRS(5)
ab41319e
JH		 947};
948
2185696d
GR		 949static const struct attribute_group vt1211_in_attr_group[] = {
950 { .attrs = vt1211_in_attr[0] },
951 { .attrs = vt1211_in_attr[1] },
952 { .attrs = vt1211_in_attr[2] },
953 { .attrs = vt1211_in_attr[3] },
954 { .attrs = vt1211_in_attr[4] },
955 { .attrs = vt1211_in_attr[5] }
ab41319e
JH		 956};
957
2185696d
GR		 958#define SENSOR_ATTR_TEMP(ix) \
959{ SENSOR_ATTR_2(temp##ix##_input, S_IRUGO, \
960 show_temp, NULL, SHOW_TEMP_INPUT, ix-1), \
ab41319e 961 SENSOR_ATTR_2(temp##ix##_max, S_IRUGO | S_IWUSR, \
2185696d
GR		 962 show_temp, set_temp, SHOW_SET_TEMP_MAX, ix-1), \
963 SENSOR_ATTR_2(temp##ix##_max_hyst, S_IRUGO | S_IWUSR, \
964 show_temp, set_temp, SHOW_SET_TEMP_MAX_HYST, ix-1), \
965 SENSOR_ATTR_2(temp##ix##_alarm, S_IRUGO, \
966 show_temp, NULL, SHOW_TEMP_ALARM, ix-1) \
967}
968
969static struct sensor_device_attribute_2 vt1211_sysfs_temp[][4] = {
970 SENSOR_ATTR_TEMP(1),
971 SENSOR_ATTR_TEMP(2),
972 SENSOR_ATTR_TEMP(3),
973 SENSOR_ATTR_TEMP(4),
974 SENSOR_ATTR_TEMP(5),
975 SENSOR_ATTR_TEMP(6),
976 SENSOR_ATTR_TEMP(7),
ab41319e
JH		 977};
978
2185696d
GR		 979#define TEMP_UNIT_ATTRS(X) \
980{ &vt1211_sysfs_temp[X][0].dev_attr.attr, \
981 &vt1211_sysfs_temp[X][1].dev_attr.attr, \
982 &vt1211_sysfs_temp[X][2].dev_attr.attr, \
983 &vt1211_sysfs_temp[X][3].dev_attr.attr, \
984 NULL \
985}
986
987static struct attribute *vt1211_temp_attr[][5] = {
988 TEMP_UNIT_ATTRS(0),
989 TEMP_UNIT_ATTRS(1),
990 TEMP_UNIT_ATTRS(2),
991 TEMP_UNIT_ATTRS(3),
992 TEMP_UNIT_ATTRS(4),
993 TEMP_UNIT_ATTRS(5),
994 TEMP_UNIT_ATTRS(6)
ab41319e
JH		 995};
996
2185696d
GR		 997static const struct attribute_group vt1211_temp_attr_group[] = {
998 { .attrs = vt1211_temp_attr[0] },
999 { .attrs = vt1211_temp_attr[1] },
1000 { .attrs = vt1211_temp_attr[2] },
1001 { .attrs = vt1211_temp_attr[3] },
1002 { .attrs = vt1211_temp_attr[4] },
1003 { .attrs = vt1211_temp_attr[5] },
1004 { .attrs = vt1211_temp_attr[6] }
ab41319e
JH		 1005};
1006
1007#define SENSOR_ATTR_FAN(ix) \
1008 SENSOR_ATTR_2(fan##ix##_input, S_IRUGO, \
1009 show_fan, NULL, SHOW_FAN_INPUT, ix-1), \
1010 SENSOR_ATTR_2(fan##ix##_min, S_IRUGO | S_IWUSR, \
1011 show_fan, set_fan, SHOW_SET_FAN_MIN, ix-1), \
1012 SENSOR_ATTR_2(fan##ix##_div, S_IRUGO | S_IWUSR, \
1013 show_fan, set_fan, SHOW_SET_FAN_DIV, ix-1), \
1014 SENSOR_ATTR_2(fan##ix##_alarm, S_IRUGO, \
1015 show_fan, NULL, SHOW_FAN_ALARM, ix-1)
1016
1017#define SENSOR_ATTR_PWM(ix) \
1018 SENSOR_ATTR_2(pwm##ix, S_IRUGO, \
1019 show_pwm, NULL, SHOW_PWM, ix-1), \
1020 SENSOR_ATTR_2(pwm##ix##_enable, S_IRUGO | S_IWUSR, \
1021 show_pwm, set_pwm, SHOW_SET_PWM_ENABLE, ix-1), \
1022 SENSOR_ATTR_2(pwm##ix##_auto_channels_temp, S_IRUGO | S_IWUSR, \
1023 show_pwm, set_pwm, SHOW_SET_PWM_AUTO_CHANNELS_TEMP, ix-1)
1024
1025#define SENSOR_ATTR_PWM_FREQ(ix) \
1026 SENSOR_ATTR_2(pwm##ix##_freq, S_IRUGO | S_IWUSR, \
1027 show_pwm, set_pwm, SHOW_SET_PWM_FREQ, ix-1)
1028
1029#define SENSOR_ATTR_PWM_FREQ_RO(ix) \
1030 SENSOR_ATTR_2(pwm##ix##_freq, S_IRUGO, \
1031 show_pwm, NULL, SHOW_SET_PWM_FREQ, ix-1)
1032
1033#define SENSOR_ATTR_PWM_AUTO_POINT_TEMP(ix, ap) \
1034 SENSOR_ATTR_2(pwm##ix##_auto_point##ap##_temp, S_IRUGO | S_IWUSR, \
1035 show_pwm_auto_point_temp, set_pwm_auto_point_temp, \
1036 ap-1, ix-1)
1037
1038#define SENSOR_ATTR_PWM_AUTO_POINT_TEMP_RO(ix, ap) \
1039 SENSOR_ATTR_2(pwm##ix##_auto_point##ap##_temp, S_IRUGO, \
1040 show_pwm_auto_point_temp, NULL, \
1041 ap-1, ix-1)
1042
1043#define SENSOR_ATTR_PWM_AUTO_POINT_PWM(ix, ap) \
1044 SENSOR_ATTR_2(pwm##ix##_auto_point##ap##_pwm, S_IRUGO | S_IWUSR, \
1045 show_pwm_auto_point_pwm, set_pwm_auto_point_pwm, \
1046 ap-1, ix-1)
1047
1048#define SENSOR_ATTR_PWM_AUTO_POINT_PWM_RO(ix, ap) \
1049 SENSOR_ATTR_2(pwm##ix##_auto_point##ap##_pwm, S_IRUGO, \
1050 show_pwm_auto_point_pwm, NULL, \
1051 ap-1, ix-1)
1052
1053static struct sensor_device_attribute_2 vt1211_sysfs_fan_pwm[] = {
1054 SENSOR_ATTR_FAN(1),
1055 SENSOR_ATTR_FAN(2),
1056 SENSOR_ATTR_PWM(1),
1057 SENSOR_ATTR_PWM(2),
1058 SENSOR_ATTR_PWM_FREQ(1),
1059 SENSOR_ATTR_PWM_FREQ_RO(2),
1060 SENSOR_ATTR_PWM_AUTO_POINT_TEMP(1, 1),
1061 SENSOR_ATTR_PWM_AUTO_POINT_TEMP(1, 2),
1062 SENSOR_ATTR_PWM_AUTO_POINT_TEMP(1, 3),
1063 SENSOR_ATTR_PWM_AUTO_POINT_TEMP(1, 4),
1064 SENSOR_ATTR_PWM_AUTO_POINT_TEMP_RO(2, 1),
1065 SENSOR_ATTR_PWM_AUTO_POINT_TEMP_RO(2, 2),
1066 SENSOR_ATTR_PWM_AUTO_POINT_TEMP_RO(2, 3),
1067 SENSOR_ATTR_PWM_AUTO_POINT_TEMP_RO(2, 4),
1068 SENSOR_ATTR_PWM_AUTO_POINT_PWM_RO(1, 1),
1069 SENSOR_ATTR_PWM_AUTO_POINT_PWM(1, 2),
1070 SENSOR_ATTR_PWM_AUTO_POINT_PWM(1, 3),
1071 SENSOR_ATTR_PWM_AUTO_POINT_PWM_RO(1, 4),
1072 SENSOR_ATTR_PWM_AUTO_POINT_PWM_RO(2, 1),
1073 SENSOR_ATTR_PWM_AUTO_POINT_PWM(2, 2),
1074 SENSOR_ATTR_PWM_AUTO_POINT_PWM(2, 3),
1075 SENSOR_ATTR_PWM_AUTO_POINT_PWM_RO(2, 4),
1076};
1077
1078static struct device_attribute vt1211_sysfs_misc[] = {
1079 __ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm),
1080 __ATTR(cpu0_vid, S_IRUGO, show_vid, NULL),
1081 __ATTR(name, S_IRUGO, show_name, NULL),
1082 __ATTR(alarms, S_IRUGO, show_alarms, NULL),
1083};
1084
1085/* ---------------------------------------------------------------------
1086 * Device registration and initialization
1087 * --------------------------------------------------------------------- */
1088
1089static void __devinit vt1211_init_device(struct vt1211_data *data)
1090{
1091 /* set VRM */
1092 data->vrm = vid_which_vrm();
1093
1094 /* Read (and initialize) UCH config */
1095 data->uch_config = vt1211_read8(data, VT1211_REG_UCH_CONFIG);
1096 if (uch_config > -1) {
1097 data->uch_config = (data->uch_config & 0x83) |
1098 (uch_config << 2);
1099 vt1211_write8(data, VT1211_REG_UCH_CONFIG, data->uch_config);
1100 }
1101
b162c033
GR		 1102 /*
1103 * Initialize the interrupt mode (if request at module load time).
ab41319e
JH		 1104 * The VT1211 implements 3 different modes for clearing interrupts:
1105 * 0: Clear INT when status register is read. Regenerate INT as long
1106 * as temp stays above hysteresis limit.
1107 * 1: Clear INT when status register is read. DON'T regenerate INT
1108 * until temp falls below hysteresis limit and exceeds hot limit
1109 * again.
1110 * 2: Clear INT when temp falls below max limit.
1111 *
1112 * The driver only allows to force mode 0 since that's the only one
b162c033
GR		 1113 * that makes sense for 'sensors'
1114 */
ab41319e
JH		 1115 if (int_mode == 0) {
1116 vt1211_write8(data, VT1211_REG_TEMP1_CONFIG, 0);
1117 vt1211_write8(data, VT1211_REG_TEMP2_CONFIG, 0);
1118 }
1119
1120 /* Fill in some hard wired values into our data struct */
1121 data->pwm_auto_pwm[0][3] = 255;
1122 data->pwm_auto_pwm[1][3] = 255;
1123}
1124
1125static void vt1211_remove_sysfs(struct platform_device *pdev)
1126{
1127 struct device *dev = &pdev->dev;
1128 int i;
1129
2185696d
GR		 1130 for (i = 0; i < ARRAY_SIZE(vt1211_in_attr_group); i++)
1131 sysfs_remove_group(&dev->kobj, &vt1211_in_attr_group[i]);
1132
1133 for (i = 0; i < ARRAY_SIZE(vt1211_temp_attr_group); i++)
1134 sysfs_remove_group(&dev->kobj, &vt1211_temp_attr_group[i]);
1135
ab41319e
JH		 1136 for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_fan_pwm); i++) {
1137 device_remove_file(dev,
1138 &vt1211_sysfs_fan_pwm[i].dev_attr);
1139 }
b162c033 1140 for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_misc); i++)
ab41319e 1141 device_remove_file(dev, &vt1211_sysfs_misc[i]);
ab41319e
JH		 1142}
1143
1144static int __devinit vt1211_probe(struct platform_device *pdev)
1145{
1146 struct device *dev = &pdev->dev;
1147 struct vt1211_data *data;
1148 struct resource *res;
1149 int i, err;
1150
b162c033
GR		 1151 data = kzalloc(sizeof(struct vt1211_data), GFP_KERNEL);
1152 if (!data) {
ab41319e
JH		 1153 err = -ENOMEM;
1154 dev_err(dev, "Out of memory\n");
1155 goto EXIT;
1156 }
1157
1158 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
86855b0c 1159 if (!request_region(res->start, resource_size(res), DRVNAME)) {
ce7ee4e8
JD		 1160 err = -EBUSY;
1161 dev_err(dev, "Failed to request region 0x%lx-0x%lx\n",
1162 (unsigned long)res->start, (unsigned long)res->end);
1163 goto EXIT_KFREE;
1164 }
ab41319e
JH		 1165 data->addr = res->start;
1166 data->name = DRVNAME;
1167 mutex_init(&data->update_lock);
1168
1169 platform_set_drvdata(pdev, data);
1170
1171 /* Initialize the VT1211 chip */
1172 vt1211_init_device(data);
1173
1174 /* Create sysfs interface files */
2185696d 1175 for (i = 0; i < ARRAY_SIZE(vt1211_in_attr_group); i++) {
ab41319e 1176 if (ISVOLT(i, data->uch_config)) {
2185696d
GR		 1177 err = sysfs_create_group(&dev->kobj,
1178 &vt1211_in_attr_group[i]);
1179 if (err)
ab41319e 1180 goto EXIT_DEV_REMOVE;
ab41319e
JH		 1181 }
1182 }
2185696d 1183 for (i = 0; i < ARRAY_SIZE(vt1211_temp_attr_group); i++) {
ab41319e 1184 if (ISTEMP(i, data->uch_config)) {
2185696d
GR		 1185 err = sysfs_create_group(&dev->kobj,
1186 &vt1211_temp_attr_group[i]);
1187 if (err)
ab41319e 1188 goto EXIT_DEV_REMOVE;
ab41319e
JH		 1189 }
1190 }
1191 for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_fan_pwm); i++) {
1192 err = device_create_file(dev,
1193 &vt1211_sysfs_fan_pwm[i].dev_attr);
b162c033 1194 if (err)
ab41319e 1195 goto EXIT_DEV_REMOVE;
ab41319e
JH		 1196 }
1197 for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_misc); i++) {
1198 err = device_create_file(dev,
1199 &vt1211_sysfs_misc[i]);
b162c033 1200 if (err)
ab41319e 1201 goto EXIT_DEV_REMOVE;
ab41319e
JH		 1202 }
1203
1204 /* Register device */
1beeffe4
TJ		 1205 data->hwmon_dev = hwmon_device_register(dev);
1206 if (IS_ERR(data->hwmon_dev)) {
1207 err = PTR_ERR(data->hwmon_dev);
ab41319e
JH		 1208 dev_err(dev, "Class registration failed (%d)\n", err);
1209 goto EXIT_DEV_REMOVE_SILENT;
1210 }
1211
1212 return 0;
1213
1214EXIT_DEV_REMOVE:
1215 dev_err(dev, "Sysfs interface creation failed (%d)\n", err);
1216EXIT_DEV_REMOVE_SILENT:
1217 vt1211_remove_sysfs(pdev);
86855b0c 1218 release_region(res->start, resource_size(res));
ce7ee4e8 1219EXIT_KFREE:
ab41319e
JH		 1220 platform_set_drvdata(pdev, NULL);
1221 kfree(data);
1222EXIT:
1223 return err;
1224}
1225
1226static int __devexit vt1211_remove(struct platform_device *pdev)
1227{
1228 struct vt1211_data *data = platform_get_drvdata(pdev);
ce7ee4e8 1229 struct resource *res;
ab41319e 1230
1beeffe4 1231 hwmon_device_unregister(data->hwmon_dev);
ab41319e
JH		 1232 vt1211_remove_sysfs(pdev);
1233 platform_set_drvdata(pdev, NULL);
1234 kfree(data);
1235
ce7ee4e8 1236 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
86855b0c 1237 release_region(res->start, resource_size(res));
ce7ee4e8 1238
ab41319e
JH		 1239 return 0;
1240}
1241
1242static struct platform_driver vt1211_driver = {
1243 .driver = {
1244 .owner = THIS_MODULE,
1245 .name = DRVNAME,
1246 },
1247 .probe = vt1211_probe,
1248 .remove = __devexit_p(vt1211_remove),
1249};
1250
1251static int __init vt1211_device_add(unsigned short address)
1252{
1253 struct resource res = {
1254 .start = address,
1255 .end = address + 0x7f,
1256 .flags = IORESOURCE_IO,
1257 };
1258 int err;
1259
1260 pdev = platform_device_alloc(DRVNAME, address);
1261 if (!pdev) {
1262 err = -ENOMEM;
5ed9ba6b 1263 pr_err("Device allocation failed (%d)\n", err);
ab41319e
JH		 1264 goto EXIT;
1265 }
1266
1267 res.name = pdev->name;
b9acb64a
JD		 1268 err = acpi_check_resource_conflict(&res);
1269 if (err)
18632f84 1270 goto EXIT_DEV_PUT;
b9acb64a 1271
ab41319e
JH		 1272 err = platform_device_add_resources(pdev, &res, 1);
1273 if (err) {
5ed9ba6b 1274 pr_err("Device resource addition failed (%d)\n", err);
ab41319e
JH		 1275 goto EXIT_DEV_PUT;
1276 }
1277
1278 err = platform_device_add(pdev);
1279 if (err) {
5ed9ba6b 1280 pr_err("Device addition failed (%d)\n", err);
ab41319e
JH		 1281 goto EXIT_DEV_PUT;
1282 }
1283
1284 return 0;
1285
1286EXIT_DEV_PUT:
1287 platform_device_put(pdev);
1288EXIT:
1289 return err;
1290}
1291
2219cd81 1292static int __init vt1211_find(int sio_cip, unsigned short *address)
ab41319e
JH		 1293{
1294 int err = -ENODEV;
67b671bc 1295 int devid;
ab41319e 1296
2219cd81 1297 superio_enter(sio_cip);
ab41319e 1298
67b671bc 1299 devid = force_id ? force_id : superio_inb(sio_cip, SIO_VT1211_DEVID);
b162c033 1300 if (devid != SIO_VT1211_ID)
ab41319e 1301 goto EXIT;
ab41319e 1302
2219cd81 1303 superio_select(sio_cip, SIO_VT1211_LDN_HWMON);
ab41319e 1304
2219cd81 1305 if ((superio_inb(sio_cip, SIO_VT1211_ACTIVE) & 1) == 0) {
5ed9ba6b 1306 pr_warn("HW monitor is disabled, skipping\n");
ab41319e
JH		 1307 goto EXIT;
1308 }
1309
2219cd81
JH		 1310 *address = ((superio_inb(sio_cip, SIO_VT1211_BADDR) << 8) |
1311 (superio_inb(sio_cip, SIO_VT1211_BADDR + 1))) & 0xff00;
ab41319e 1312 if (*address == 0) {
5ed9ba6b 1313 pr_warn("Base address is not set, skipping\n");
ab41319e
JH		 1314 goto EXIT;
1315 }
1316
1317 err = 0;
5ed9ba6b
JP		 1318 pr_info("Found VT1211 chip at 0x%04x, revision %u\n",
1319 *address, superio_inb(sio_cip, SIO_VT1211_DEVREV));
ab41319e
JH		 1320
1321EXIT:
2219cd81 1322 superio_exit(sio_cip);
ab41319e
JH		 1323 return err;
1324}
1325
1326static int __init vt1211_init(void)
1327{
1328 int err;
1329 unsigned short address = 0;
1330
b162c033
GR		 1331 err = vt1211_find(SIO_REG_CIP1, &address);
1332 if (err) {
1333 err = vt1211_find(SIO_REG_CIP2, &address);
1334 if (err)
1335 goto EXIT;
ab41319e
JH		 1336 }
1337
1338 if ((uch_config < -1) || (uch_config > 31)) {
1339 err = -EINVAL;
5ed9ba6b
JP		 1340 pr_warn("Invalid UCH configuration %d. "
1341 "Choose a value between 0 and 31.\n", uch_config);
b162c033 1342 goto EXIT;
ab41319e
JH		 1343 }
1344
1345 if ((int_mode < -1) || (int_mode > 0)) {
1346 err = -EINVAL;
5ed9ba6b
JP		 1347 pr_warn("Invalid interrupt mode %d. "
1348 "Only mode 0 is supported.\n", int_mode);
b162c033 1349 goto EXIT;
ab41319e
JH		 1350 }
1351
1352 err = platform_driver_register(&vt1211_driver);
b162c033 1353 if (err)
ab41319e 1354 goto EXIT;
ab41319e
JH		 1355
1356 /* Sets global pdev as a side effect */
1357 err = vt1211_device_add(address);
b162c033 1358 if (err)
ab41319e 1359 goto EXIT_DRV_UNREGISTER;
ab41319e
JH		 1360
1361 return 0;
1362
1363EXIT_DRV_UNREGISTER:
1364 platform_driver_unregister(&vt1211_driver);
1365EXIT:
1366 return err;
1367}
1368
1369static void __exit vt1211_exit(void)
1370{
1371 platform_device_unregister(pdev);
1372 platform_driver_unregister(&vt1211_driver);
1373}
1374
1375MODULE_AUTHOR("Juerg Haefliger <[email protected]>");
1376MODULE_DESCRIPTION("VT1211 sensors");
1377MODULE_LICENSE("GPL");
1378
1379module_init(vt1211_init);
1380module_exit(vt1211_exit);
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