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Juerg Haefligerab413192006-09-24 20:54:04 +02001/*
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
Joe Perches5ed9ba62010-10-20 06:51:52 +000024#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
25
Juerg Haefligerab413192006-09-24 20:54:04 +020026#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>
Jean Delvarece7ee4e2007-05-08 17:21:59 +020036#include <linux/ioport.h>
Jean Delvareb9acb642009-01-07 16:37:35 +010037#include <linux/acpi.h>
H Hartley Sweeten6055fae2009-09-15 17:18:13 +020038#include <linux/io.h>
Juerg Haefligerab413192006-09-24 20:54:04 +020039
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
Jean Delvare67b671b2007-12-06 23:13:42 +010048static unsigned short force_id;
49module_param(force_id, ushort, 0);
50MODULE_PARM_DESC(force_id, "Override the detected device ID");
51
Juerg Haefligerab413192006-09-24 20:54:04 +020052static 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;
Tony Jones1beeffe2007-08-20 13:46:20 -0700118 struct device *hwmon_dev;
Juerg Haefligerab413192006-09-24 20:54:04 +0200119
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
Guenter Roeckb162c032012-01-15 06:52:33 -0800154/*
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 */
Juerg Haefligerab413192006-09-24 20:54:04 +0200158#define IN_FROM_REG(ix, reg) ((reg) < 3 ? 0 : (ix) == 5 ? \
159 (((reg) - 3) * 15882 + 479) / 958 : \
160 (((reg) - 3) * 10000 + 479) / 958)
Guenter Roeck2a844c12013-01-09 08:09:34 -0800161#define IN_TO_REG(ix, val) (clamp_val((ix) == 5 ? \
Juerg Haefligerab413192006-09-24 20:54:04 +0200162 ((val) * 958 + 7941) / 15882 + 3 : \
163 ((val) * 958 + 5000) / 10000 + 3, 0, 255))
164
Guenter Roeckb162c032012-01-15 06:52:33 -0800165/*
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 */
Juerg Haefligerab413192006-09-24 20:54:04 +0200172#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)
Guenter Roeck2a844c12013-01-09 08:09:34 -0800176#define TEMP_TO_REG(ix, val) clamp_val( \
Juerg Haefligerab413192006-09-24 20:54:04 +0200177 ((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 : \
Guenter Roeck2a844c12013-01-09 08:09:34 -0800186 clamp_val((1310720 / (val) / \
Juerg Haefligerab413192006-09-24 20:54:04 +0200187 DIV_FROM_REG(div)), 1, 254))
188
189/* ---------------------------------------------------------------------
190 * Super-I/O constants and functions
191 * --------------------------------------------------------------------- */
192
Guenter Roeckb162c032012-01-15 06:52:33 -0800193/*
194 * Configuration index port registers
195 * The vt1211 can live at 2 different addresses so we need to probe both
196 */
Juerg Haefliger2219cd82007-02-14 21:15:05 +0100197#define SIO_REG_CIP1 0x2e
198#define SIO_REG_CIP2 0x4e
Juerg Haefligerab413192006-09-24 20:54:04 +0200199
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
Juerg Haefliger2219cd82007-02-14 21:15:05 +0100211static inline void superio_outb(int sio_cip, int reg, int val)
Juerg Haefligerab413192006-09-24 20:54:04 +0200212{
Juerg Haefliger2219cd82007-02-14 21:15:05 +0100213 outb(reg, sio_cip);
214 outb(val, sio_cip + 1);
Juerg Haefligerab413192006-09-24 20:54:04 +0200215}
216
Juerg Haefliger2219cd82007-02-14 21:15:05 +0100217static inline int superio_inb(int sio_cip, int reg)
Juerg Haefligerab413192006-09-24 20:54:04 +0200218{
Juerg Haefliger2219cd82007-02-14 21:15:05 +0100219 outb(reg, sio_cip);
220 return inb(sio_cip + 1);
Juerg Haefligerab413192006-09-24 20:54:04 +0200221}
222
Juerg Haefliger2219cd82007-02-14 21:15:05 +0100223static inline void superio_select(int sio_cip, int ldn)
Juerg Haefligerab413192006-09-24 20:54:04 +0200224{
Juerg Haefliger2219cd82007-02-14 21:15:05 +0100225 outb(SIO_VT1211_LDN, sio_cip);
226 outb(ldn, sio_cip + 1);
Juerg Haefligerab413192006-09-24 20:54:04 +0200227}
228
Juerg Haefliger2219cd82007-02-14 21:15:05 +0100229static inline void superio_enter(int sio_cip)
Juerg Haefligerab413192006-09-24 20:54:04 +0200230{
Juerg Haefliger2219cd82007-02-14 21:15:05 +0100231 outb(0x87, sio_cip);
232 outb(0x87, sio_cip);
Juerg Haefligerab413192006-09-24 20:54:04 +0200233}
234
Juerg Haefliger2219cd82007-02-14 21:15:05 +0100235static inline void superio_exit(int sio_cip)
Juerg Haefligerab413192006-09-24 20:54:04 +0200236{
Juerg Haefliger2219cd82007-02-14 21:15:05 +0100237 outb(0xaa, sio_cip);
Juerg Haefligerab413192006-09-24 20:54:04 +0200238}
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;
Guenter Roeckb162c032012-01-15 06:52:33 -0800386 long val;
387 int err;
388
389 err = kstrtol(buf, 10, &val);
390 if (err)
391 return err;
Juerg Haefligerab413192006-09-24 20:54:04 +0200392
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;
Guenter Roeckb162c032012-01-15 06:52:33 -0800460 long val;
461 int err;
462
463 err = kstrtol(buf, 10, &val);
464 if (err)
465 return err;
Juerg Haefligerab413192006-09-24 20:54:04 +0200466
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;
Juerg Haefligerab413192006-09-24 20:54:04 +0200536 int reg;
Guenter Roeckb162c032012-01-15 06:52:33 -0800537 unsigned long val;
538 int err;
539
540 err = kstrtoul(buf, 10, &val);
541 if (err)
542 return err;
Juerg Haefligerab413192006-09-24 20:54:04 +0200543
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) {
Guenter Roeckb162c032012-01-15 06:52:33 -0800560 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;
Guenter Roeckb55f3752013-01-10 10:01:24 -0800574 dev_warn(dev,
575 "fan div value %ld not supported. Choose one of 1, 2, 4, or 8.\n",
576 val);
Guenter Roeckb162c032012-01-15 06:52:33 -0800577 goto EXIT;
Juerg Haefligerab413192006-09-24 20:54:04 +0200578 }
579 vt1211_write8(data, VT1211_REG_FAN_DIV,
580 ((data->fan_div[1] << 6) |
581 (data->fan_div[0] << 4) |
582 data->fan_ctl));
583 break;
584 default:
585 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn);
586 }
587
588EXIT:
589 mutex_unlock(&data->update_lock);
590 return count;
591}
592
593/* ---------------------------------------------------------------------
594 * PWM sysfs interfaces
595 * ix = [0-1]
596 * --------------------------------------------------------------------- */
597
598#define SHOW_PWM 0
599#define SHOW_SET_PWM_ENABLE 1
600#define SHOW_SET_PWM_FREQ 2
601#define SHOW_SET_PWM_AUTO_CHANNELS_TEMP 3
602
603static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
604 char *buf)
605{
606 struct vt1211_data *data = vt1211_update_device(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 int res;
612
613 switch (fn) {
614 case SHOW_PWM:
615 res = data->pwm[ix];
616 break;
617 case SHOW_SET_PWM_ENABLE:
618 res = ((data->pwm_ctl[ix] >> 3) & 1) ? 2 : 0;
619 break;
620 case SHOW_SET_PWM_FREQ:
621 res = 90000 >> (data->pwm_clk & 7);
622 break;
623 case SHOW_SET_PWM_AUTO_CHANNELS_TEMP:
624 res = (data->pwm_ctl[ix] & 7) + 1;
625 break;
626 default:
627 res = 0;
628 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn);
629 }
630
631 return sprintf(buf, "%d\n", res);
632}
633
634static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
635 const char *buf, size_t count)
636{
637 struct vt1211_data *data = dev_get_drvdata(dev);
638 struct sensor_device_attribute_2 *sensor_attr_2 =
639 to_sensor_dev_attr_2(attr);
640 int ix = sensor_attr_2->index;
641 int fn = sensor_attr_2->nr;
Juerg Haefligerab413192006-09-24 20:54:04 +0200642 int tmp, reg;
Guenter Roeckb162c032012-01-15 06:52:33 -0800643 unsigned long val;
644 int err;
645
646 err = kstrtoul(buf, 10, &val);
647 if (err)
648 return err;
Juerg Haefligerab413192006-09-24 20:54:04 +0200649
650 mutex_lock(&data->update_lock);
651
652 switch (fn) {
653 case SHOW_SET_PWM_ENABLE:
654 /* sync the data cache */
655 reg = vt1211_read8(data, VT1211_REG_FAN_DIV);
656 data->fan_div[0] = (reg >> 4) & 3;
657 data->fan_div[1] = (reg >> 6) & 3;
658 data->fan_ctl = reg & 0xf;
659 reg = vt1211_read8(data, VT1211_REG_PWM_CTL);
660 data->pwm_ctl[0] = reg & 0xf;
661 data->pwm_ctl[1] = (reg >> 4) & 0xf;
662 switch (val) {
663 case 0:
664 data->pwm_ctl[ix] &= 7;
Guenter Roeckb162c032012-01-15 06:52:33 -0800665 /*
666 * disable SmartGuardian if both PWM outputs are
667 * disabled
668 */
669 if ((data->pwm_ctl[ix ^ 1] & 1) == 0)
Juerg Haefligerab413192006-09-24 20:54:04 +0200670 data->fan_ctl &= 0xe;
Juerg Haefligerab413192006-09-24 20:54:04 +0200671 break;
672 case 2:
673 data->pwm_ctl[ix] |= 8;
674 data->fan_ctl |= 1;
675 break;
676 default:
677 count = -EINVAL;
Guenter Roeckb55f3752013-01-10 10:01:24 -0800678 dev_warn(dev,
679 "pwm mode %ld not supported. Choose one of 0 or 2.\n",
680 val);
Juerg Haefligerab413192006-09-24 20:54:04 +0200681 goto EXIT;
682 }
683 vt1211_write8(data, VT1211_REG_PWM_CTL,
684 ((data->pwm_ctl[1] << 4) |
685 data->pwm_ctl[0]));
686 vt1211_write8(data, VT1211_REG_FAN_DIV,
687 ((data->fan_div[1] << 6) |
688 (data->fan_div[0] << 4) |
689 data->fan_ctl));
690 break;
691 case SHOW_SET_PWM_FREQ:
Guenter Roeck2a844c12013-01-09 08:09:34 -0800692 val = 135000 / clamp_val(val, 135000 >> 7, 135000);
Juerg Haefligerab413192006-09-24 20:54:04 +0200693 /* calculate tmp = log2(val) */
694 tmp = 0;
Guenter Roeckb162c032012-01-15 06:52:33 -0800695 for (val >>= 1; val > 0; val >>= 1)
Juerg Haefligerab413192006-09-24 20:54:04 +0200696 tmp++;
Juerg Haefligerab413192006-09-24 20:54:04 +0200697 /* sync the data cache */
698 reg = vt1211_read8(data, VT1211_REG_PWM_CLK);
699 data->pwm_clk = (reg & 0xf8) | tmp;
700 vt1211_write8(data, VT1211_REG_PWM_CLK, data->pwm_clk);
701 break;
702 case SHOW_SET_PWM_AUTO_CHANNELS_TEMP:
Guenter Roeckb162c032012-01-15 06:52:33 -0800703 if (val < 1 || val > 7) {
Juerg Haefligerab413192006-09-24 20:54:04 +0200704 count = -EINVAL;
Guenter Roeckb55f3752013-01-10 10:01:24 -0800705 dev_warn(dev,
706 "temp channel %ld not supported. Choose a value between 1 and 7.\n",
707 val);
Juerg Haefligerab413192006-09-24 20:54:04 +0200708 goto EXIT;
709 }
710 if (!ISTEMP(val - 1, data->uch_config)) {
711 count = -EINVAL;
712 dev_warn(dev, "temp channel %ld is not available.\n",
713 val);
714 goto EXIT;
715 }
716 /* sync the data cache */
717 reg = vt1211_read8(data, VT1211_REG_PWM_CTL);
718 data->pwm_ctl[0] = reg & 0xf;
719 data->pwm_ctl[1] = (reg >> 4) & 0xf;
720 data->pwm_ctl[ix] = (data->pwm_ctl[ix] & 8) | (val - 1);
721 vt1211_write8(data, VT1211_REG_PWM_CTL,
722 ((data->pwm_ctl[1] << 4) | data->pwm_ctl[0]));
723 break;
724 default:
725 dev_dbg(dev, "Unknown attr fetch (%d)\n", fn);
726 }
727
728EXIT:
729 mutex_unlock(&data->update_lock);
730 return count;
731}
732
733/* ---------------------------------------------------------------------
734 * PWM auto point definitions
735 * ix = [0-1]
736 * ap = [0-3]
737 * --------------------------------------------------------------------- */
738
739/*
740 * pwm[ix+1]_auto_point[ap+1]_temp mapping table:
741 * Note that there is only a single set of temp auto points that controls both
742 * PWM controllers. We still create 2 sets of sysfs files to make it look
743 * more consistent even though they map to the same registers.
744 *
745 * ix ap : description
746 * -------------------
747 * 0 0 : pwm1/2 off temperature (pwm_auto_temp[0])
748 * 0 1 : pwm1/2 low speed temperature (pwm_auto_temp[1])
749 * 0 2 : pwm1/2 high speed temperature (pwm_auto_temp[2])
750 * 0 3 : pwm1/2 full speed temperature (pwm_auto_temp[3])
751 * 1 0 : pwm1/2 off temperature (pwm_auto_temp[0])
752 * 1 1 : pwm1/2 low speed temperature (pwm_auto_temp[1])
753 * 1 2 : pwm1/2 high speed temperature (pwm_auto_temp[2])
754 * 1 3 : pwm1/2 full speed temperature (pwm_auto_temp[3])
755 */
756
757static ssize_t show_pwm_auto_point_temp(struct device *dev,
758 struct device_attribute *attr,
759 char *buf)
760{
761 struct vt1211_data *data = vt1211_update_device(dev);
762 struct sensor_device_attribute_2 *sensor_attr_2 =
763 to_sensor_dev_attr_2(attr);
764 int ix = sensor_attr_2->index;
765 int ap = sensor_attr_2->nr;
766
767 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->pwm_ctl[ix] & 7,
768 data->pwm_auto_temp[ap]));
769}
770
771static ssize_t set_pwm_auto_point_temp(struct device *dev,
772 struct device_attribute *attr,
773 const char *buf, size_t count)
774{
775 struct vt1211_data *data = dev_get_drvdata(dev);
776 struct sensor_device_attribute_2 *sensor_attr_2 =
777 to_sensor_dev_attr_2(attr);
778 int ix = sensor_attr_2->index;
779 int ap = sensor_attr_2->nr;
Juerg Haefligerab413192006-09-24 20:54:04 +0200780 int reg;
Guenter Roeckb162c032012-01-15 06:52:33 -0800781 long val;
782 int err;
783
784 err = kstrtol(buf, 10, &val);
785 if (err)
786 return err;
787
Juerg Haefligerab413192006-09-24 20:54:04 +0200788
789 mutex_lock(&data->update_lock);
790
791 /* sync the data cache */
792 reg = vt1211_read8(data, VT1211_REG_PWM_CTL);
793 data->pwm_ctl[0] = reg & 0xf;
794 data->pwm_ctl[1] = (reg >> 4) & 0xf;
795
796 data->pwm_auto_temp[ap] = TEMP_TO_REG(data->pwm_ctl[ix] & 7, val);
797 vt1211_write8(data, VT1211_REG_PWM_AUTO_TEMP(ap),
798 data->pwm_auto_temp[ap]);
799 mutex_unlock(&data->update_lock);
800
801 return count;
802}
803
804/*
805 * pwm[ix+1]_auto_point[ap+1]_pwm mapping table:
806 * Note that the PWM auto points 0 & 3 are hard-wired in the VT1211 and can't
807 * be changed.
808 *
809 * ix ap : description
810 * -------------------
811 * 0 0 : pwm1 off (pwm_auto_pwm[0][0], hard-wired to 0)
812 * 0 1 : pwm1 low speed duty cycle (pwm_auto_pwm[0][1])
813 * 0 2 : pwm1 high speed duty cycle (pwm_auto_pwm[0][2])
814 * 0 3 : pwm1 full speed (pwm_auto_pwm[0][3], hard-wired to 255)
815 * 1 0 : pwm2 off (pwm_auto_pwm[1][0], hard-wired to 0)
816 * 1 1 : pwm2 low speed duty cycle (pwm_auto_pwm[1][1])
817 * 1 2 : pwm2 high speed duty cycle (pwm_auto_pwm[1][2])
818 * 1 3 : pwm2 full speed (pwm_auto_pwm[1][3], hard-wired to 255)
Guenter Roeckb162c032012-01-15 06:52:33 -0800819 */
Juerg Haefligerab413192006-09-24 20:54:04 +0200820
821static ssize_t show_pwm_auto_point_pwm(struct device *dev,
822 struct device_attribute *attr,
823 char *buf)
824{
825 struct vt1211_data *data = vt1211_update_device(dev);
826 struct sensor_device_attribute_2 *sensor_attr_2 =
827 to_sensor_dev_attr_2(attr);
828 int ix = sensor_attr_2->index;
829 int ap = sensor_attr_2->nr;
830
831 return sprintf(buf, "%d\n", data->pwm_auto_pwm[ix][ap]);
832}
833
834static ssize_t set_pwm_auto_point_pwm(struct device *dev,
835 struct device_attribute *attr,
836 const char *buf, size_t count)
837{
838 struct vt1211_data *data = dev_get_drvdata(dev);
839 struct sensor_device_attribute_2 *sensor_attr_2 =
840 to_sensor_dev_attr_2(attr);
841 int ix = sensor_attr_2->index;
842 int ap = sensor_attr_2->nr;
Guenter Roeckb162c032012-01-15 06:52:33 -0800843 unsigned long val;
844 int err;
Juerg Haefligerab413192006-09-24 20:54:04 +0200845
Guenter Roeckb162c032012-01-15 06:52:33 -0800846 err = kstrtoul(buf, 10, &val);
847 if (err)
848 return err;
Juerg Haefligerab413192006-09-24 20:54:04 +0200849
850 mutex_lock(&data->update_lock);
Guenter Roeck2a844c12013-01-09 08:09:34 -0800851 data->pwm_auto_pwm[ix][ap] = clamp_val(val, 0, 255);
Juerg Haefligerab413192006-09-24 20:54:04 +0200852 vt1211_write8(data, VT1211_REG_PWM_AUTO_PWM(ix, ap),
853 data->pwm_auto_pwm[ix][ap]);
854 mutex_unlock(&data->update_lock);
855
856 return count;
857}
858
859/* ---------------------------------------------------------------------
860 * Miscellaneous sysfs interfaces (VRM, VID, name, and (legacy) alarms)
861 * --------------------------------------------------------------------- */
862
863static ssize_t show_vrm(struct device *dev, struct device_attribute *attr,
864 char *buf)
865{
866 struct vt1211_data *data = dev_get_drvdata(dev);
867
868 return sprintf(buf, "%d\n", data->vrm);
869}
870
871static ssize_t set_vrm(struct device *dev, struct device_attribute *attr,
872 const char *buf, size_t count)
873{
874 struct vt1211_data *data = dev_get_drvdata(dev);
Guenter Roeckb162c032012-01-15 06:52:33 -0800875 unsigned long val;
876 int err;
877
878 err = kstrtoul(buf, 10, &val);
879 if (err)
880 return err;
Juerg Haefligerab413192006-09-24 20:54:04 +0200881
882 data->vrm = val;
883
884 return count;
885}
886
887static ssize_t show_vid(struct device *dev, struct device_attribute *attr,
888 char *buf)
889{
890 struct vt1211_data *data = dev_get_drvdata(dev);
891
892 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
893}
894
895static ssize_t show_name(struct device *dev,
896 struct device_attribute *attr, char *buf)
897{
898 struct vt1211_data *data = dev_get_drvdata(dev);
899
900 return sprintf(buf, "%s\n", data->name);
901}
902
903static ssize_t show_alarms(struct device *dev,
904 struct device_attribute *attr, char *buf)
905{
906 struct vt1211_data *data = vt1211_update_device(dev);
907
908 return sprintf(buf, "%d\n", data->alarms);
909}
910
911/* ---------------------------------------------------------------------
912 * Device attribute structs
913 * --------------------------------------------------------------------- */
914
Guenter Roeck21856962012-01-19 21:49:20 -0800915#define SENSOR_ATTR_IN(ix) \
916{ SENSOR_ATTR_2(in##ix##_input, S_IRUGO, \
917 show_in, NULL, SHOW_IN_INPUT, ix), \
Juerg Haefligerab413192006-09-24 20:54:04 +0200918 SENSOR_ATTR_2(in##ix##_min, S_IRUGO | S_IWUSR, \
Guenter Roeck21856962012-01-19 21:49:20 -0800919 show_in, set_in, SHOW_SET_IN_MIN, ix), \
Juerg Haefligerab413192006-09-24 20:54:04 +0200920 SENSOR_ATTR_2(in##ix##_max, S_IRUGO | S_IWUSR, \
Guenter Roeck21856962012-01-19 21:49:20 -0800921 show_in, set_in, SHOW_SET_IN_MAX, ix), \
Juerg Haefligerab413192006-09-24 20:54:04 +0200922 SENSOR_ATTR_2(in##ix##_alarm, S_IRUGO, \
Guenter Roeck21856962012-01-19 21:49:20 -0800923 show_in, NULL, SHOW_IN_ALARM, ix) \
924}
Juerg Haefligerab413192006-09-24 20:54:04 +0200925
Guenter Roeck21856962012-01-19 21:49:20 -0800926static struct sensor_device_attribute_2 vt1211_sysfs_in[][4] = {
927 SENSOR_ATTR_IN(0),
928 SENSOR_ATTR_IN(1),
929 SENSOR_ATTR_IN(2),
930 SENSOR_ATTR_IN(3),
931 SENSOR_ATTR_IN(4),
932 SENSOR_ATTR_IN(5)
Juerg Haefligerab413192006-09-24 20:54:04 +0200933};
934
Guenter Roeck21856962012-01-19 21:49:20 -0800935#define IN_UNIT_ATTRS(X) \
936{ &vt1211_sysfs_in[X][0].dev_attr.attr, \
937 &vt1211_sysfs_in[X][1].dev_attr.attr, \
938 &vt1211_sysfs_in[X][2].dev_attr.attr, \
939 &vt1211_sysfs_in[X][3].dev_attr.attr, \
940 NULL \
941}
Juerg Haefligerab413192006-09-24 20:54:04 +0200942
Guenter Roeck21856962012-01-19 21:49:20 -0800943static struct attribute *vt1211_in_attr[][5] = {
944 IN_UNIT_ATTRS(0),
945 IN_UNIT_ATTRS(1),
946 IN_UNIT_ATTRS(2),
947 IN_UNIT_ATTRS(3),
948 IN_UNIT_ATTRS(4),
949 IN_UNIT_ATTRS(5)
Juerg Haefligerab413192006-09-24 20:54:04 +0200950};
951
Guenter Roeck21856962012-01-19 21:49:20 -0800952static const struct attribute_group vt1211_in_attr_group[] = {
953 { .attrs = vt1211_in_attr[0] },
954 { .attrs = vt1211_in_attr[1] },
955 { .attrs = vt1211_in_attr[2] },
956 { .attrs = vt1211_in_attr[3] },
957 { .attrs = vt1211_in_attr[4] },
958 { .attrs = vt1211_in_attr[5] }
959};
960
961#define SENSOR_ATTR_TEMP(ix) \
962{ SENSOR_ATTR_2(temp##ix##_input, S_IRUGO, \
963 show_temp, NULL, SHOW_TEMP_INPUT, ix-1), \
Juerg Haefligerab413192006-09-24 20:54:04 +0200964 SENSOR_ATTR_2(temp##ix##_max, S_IRUGO | S_IWUSR, \
Guenter Roeck21856962012-01-19 21:49:20 -0800965 show_temp, set_temp, SHOW_SET_TEMP_MAX, ix-1), \
Juerg Haefligerab413192006-09-24 20:54:04 +0200966 SENSOR_ATTR_2(temp##ix##_max_hyst, S_IRUGO | S_IWUSR, \
Guenter Roeck21856962012-01-19 21:49:20 -0800967 show_temp, set_temp, SHOW_SET_TEMP_MAX_HYST, ix-1), \
968 SENSOR_ATTR_2(temp##ix##_alarm, S_IRUGO, \
969 show_temp, NULL, SHOW_TEMP_ALARM, ix-1) \
970}
Juerg Haefligerab413192006-09-24 20:54:04 +0200971
Guenter Roeck21856962012-01-19 21:49:20 -0800972static struct sensor_device_attribute_2 vt1211_sysfs_temp[][4] = {
973 SENSOR_ATTR_TEMP(1),
974 SENSOR_ATTR_TEMP(2),
975 SENSOR_ATTR_TEMP(3),
976 SENSOR_ATTR_TEMP(4),
977 SENSOR_ATTR_TEMP(5),
978 SENSOR_ATTR_TEMP(6),
979 SENSOR_ATTR_TEMP(7),
Juerg Haefligerab413192006-09-24 20:54:04 +0200980};
981
Guenter Roeck21856962012-01-19 21:49:20 -0800982#define TEMP_UNIT_ATTRS(X) \
983{ &vt1211_sysfs_temp[X][0].dev_attr.attr, \
984 &vt1211_sysfs_temp[X][1].dev_attr.attr, \
985 &vt1211_sysfs_temp[X][2].dev_attr.attr, \
986 &vt1211_sysfs_temp[X][3].dev_attr.attr, \
987 NULL \
988}
Juerg Haefligerab413192006-09-24 20:54:04 +0200989
Guenter Roeck21856962012-01-19 21:49:20 -0800990static struct attribute *vt1211_temp_attr[][5] = {
991 TEMP_UNIT_ATTRS(0),
992 TEMP_UNIT_ATTRS(1),
993 TEMP_UNIT_ATTRS(2),
994 TEMP_UNIT_ATTRS(3),
995 TEMP_UNIT_ATTRS(4),
996 TEMP_UNIT_ATTRS(5),
997 TEMP_UNIT_ATTRS(6)
998};
999
1000static const struct attribute_group vt1211_temp_attr_group[] = {
1001 { .attrs = vt1211_temp_attr[0] },
1002 { .attrs = vt1211_temp_attr[1] },
1003 { .attrs = vt1211_temp_attr[2] },
1004 { .attrs = vt1211_temp_attr[3] },
1005 { .attrs = vt1211_temp_attr[4] },
1006 { .attrs = vt1211_temp_attr[5] },
1007 { .attrs = vt1211_temp_attr[6] }
Juerg Haefligerab413192006-09-24 20:54:04 +02001008};
1009
1010#define SENSOR_ATTR_FAN(ix) \
1011 SENSOR_ATTR_2(fan##ix##_input, S_IRUGO, \
1012 show_fan, NULL, SHOW_FAN_INPUT, ix-1), \
1013 SENSOR_ATTR_2(fan##ix##_min, S_IRUGO | S_IWUSR, \
1014 show_fan, set_fan, SHOW_SET_FAN_MIN, ix-1), \
1015 SENSOR_ATTR_2(fan##ix##_div, S_IRUGO | S_IWUSR, \
1016 show_fan, set_fan, SHOW_SET_FAN_DIV, ix-1), \
1017 SENSOR_ATTR_2(fan##ix##_alarm, S_IRUGO, \
1018 show_fan, NULL, SHOW_FAN_ALARM, ix-1)
1019
1020#define SENSOR_ATTR_PWM(ix) \
1021 SENSOR_ATTR_2(pwm##ix, S_IRUGO, \
1022 show_pwm, NULL, SHOW_PWM, ix-1), \
1023 SENSOR_ATTR_2(pwm##ix##_enable, S_IRUGO | S_IWUSR, \
1024 show_pwm, set_pwm, SHOW_SET_PWM_ENABLE, ix-1), \
1025 SENSOR_ATTR_2(pwm##ix##_auto_channels_temp, S_IRUGO | S_IWUSR, \
1026 show_pwm, set_pwm, SHOW_SET_PWM_AUTO_CHANNELS_TEMP, ix-1)
1027
1028#define SENSOR_ATTR_PWM_FREQ(ix) \
1029 SENSOR_ATTR_2(pwm##ix##_freq, S_IRUGO | S_IWUSR, \
1030 show_pwm, set_pwm, SHOW_SET_PWM_FREQ, ix-1)
1031
1032#define SENSOR_ATTR_PWM_FREQ_RO(ix) \
1033 SENSOR_ATTR_2(pwm##ix##_freq, S_IRUGO, \
1034 show_pwm, NULL, SHOW_SET_PWM_FREQ, ix-1)
1035
1036#define SENSOR_ATTR_PWM_AUTO_POINT_TEMP(ix, ap) \
1037 SENSOR_ATTR_2(pwm##ix##_auto_point##ap##_temp, S_IRUGO | S_IWUSR, \
1038 show_pwm_auto_point_temp, set_pwm_auto_point_temp, \
1039 ap-1, ix-1)
1040
1041#define SENSOR_ATTR_PWM_AUTO_POINT_TEMP_RO(ix, ap) \
1042 SENSOR_ATTR_2(pwm##ix##_auto_point##ap##_temp, S_IRUGO, \
1043 show_pwm_auto_point_temp, NULL, \
1044 ap-1, ix-1)
1045
1046#define SENSOR_ATTR_PWM_AUTO_POINT_PWM(ix, ap) \
1047 SENSOR_ATTR_2(pwm##ix##_auto_point##ap##_pwm, S_IRUGO | S_IWUSR, \
1048 show_pwm_auto_point_pwm, set_pwm_auto_point_pwm, \
1049 ap-1, ix-1)
1050
1051#define SENSOR_ATTR_PWM_AUTO_POINT_PWM_RO(ix, ap) \
1052 SENSOR_ATTR_2(pwm##ix##_auto_point##ap##_pwm, S_IRUGO, \
1053 show_pwm_auto_point_pwm, NULL, \
1054 ap-1, ix-1)
1055
1056static struct sensor_device_attribute_2 vt1211_sysfs_fan_pwm[] = {
1057 SENSOR_ATTR_FAN(1),
1058 SENSOR_ATTR_FAN(2),
1059 SENSOR_ATTR_PWM(1),
1060 SENSOR_ATTR_PWM(2),
1061 SENSOR_ATTR_PWM_FREQ(1),
1062 SENSOR_ATTR_PWM_FREQ_RO(2),
1063 SENSOR_ATTR_PWM_AUTO_POINT_TEMP(1, 1),
1064 SENSOR_ATTR_PWM_AUTO_POINT_TEMP(1, 2),
1065 SENSOR_ATTR_PWM_AUTO_POINT_TEMP(1, 3),
1066 SENSOR_ATTR_PWM_AUTO_POINT_TEMP(1, 4),
1067 SENSOR_ATTR_PWM_AUTO_POINT_TEMP_RO(2, 1),
1068 SENSOR_ATTR_PWM_AUTO_POINT_TEMP_RO(2, 2),
1069 SENSOR_ATTR_PWM_AUTO_POINT_TEMP_RO(2, 3),
1070 SENSOR_ATTR_PWM_AUTO_POINT_TEMP_RO(2, 4),
1071 SENSOR_ATTR_PWM_AUTO_POINT_PWM_RO(1, 1),
1072 SENSOR_ATTR_PWM_AUTO_POINT_PWM(1, 2),
1073 SENSOR_ATTR_PWM_AUTO_POINT_PWM(1, 3),
1074 SENSOR_ATTR_PWM_AUTO_POINT_PWM_RO(1, 4),
1075 SENSOR_ATTR_PWM_AUTO_POINT_PWM_RO(2, 1),
1076 SENSOR_ATTR_PWM_AUTO_POINT_PWM(2, 2),
1077 SENSOR_ATTR_PWM_AUTO_POINT_PWM(2, 3),
1078 SENSOR_ATTR_PWM_AUTO_POINT_PWM_RO(2, 4),
1079};
1080
1081static struct device_attribute vt1211_sysfs_misc[] = {
1082 __ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm),
1083 __ATTR(cpu0_vid, S_IRUGO, show_vid, NULL),
1084 __ATTR(name, S_IRUGO, show_name, NULL),
1085 __ATTR(alarms, S_IRUGO, show_alarms, NULL),
1086};
1087
1088/* ---------------------------------------------------------------------
1089 * Device registration and initialization
1090 * --------------------------------------------------------------------- */
1091
Bill Pemberton6c931ae2012-11-19 13:22:35 -05001092static void vt1211_init_device(struct vt1211_data *data)
Juerg Haefligerab413192006-09-24 20:54:04 +02001093{
1094 /* set VRM */
1095 data->vrm = vid_which_vrm();
1096
1097 /* Read (and initialize) UCH config */
1098 data->uch_config = vt1211_read8(data, VT1211_REG_UCH_CONFIG);
1099 if (uch_config > -1) {
1100 data->uch_config = (data->uch_config & 0x83) |
1101 (uch_config << 2);
1102 vt1211_write8(data, VT1211_REG_UCH_CONFIG, data->uch_config);
1103 }
1104
Guenter Roeckb162c032012-01-15 06:52:33 -08001105 /*
1106 * Initialize the interrupt mode (if request at module load time).
Juerg Haefligerab413192006-09-24 20:54:04 +02001107 * The VT1211 implements 3 different modes for clearing interrupts:
1108 * 0: Clear INT when status register is read. Regenerate INT as long
1109 * as temp stays above hysteresis limit.
1110 * 1: Clear INT when status register is read. DON'T regenerate INT
1111 * until temp falls below hysteresis limit and exceeds hot limit
1112 * again.
1113 * 2: Clear INT when temp falls below max limit.
1114 *
1115 * The driver only allows to force mode 0 since that's the only one
Guenter Roeckb162c032012-01-15 06:52:33 -08001116 * that makes sense for 'sensors'
1117 */
Juerg Haefligerab413192006-09-24 20:54:04 +02001118 if (int_mode == 0) {
1119 vt1211_write8(data, VT1211_REG_TEMP1_CONFIG, 0);
1120 vt1211_write8(data, VT1211_REG_TEMP2_CONFIG, 0);
1121 }
1122
1123 /* Fill in some hard wired values into our data struct */
1124 data->pwm_auto_pwm[0][3] = 255;
1125 data->pwm_auto_pwm[1][3] = 255;
1126}
1127
1128static void vt1211_remove_sysfs(struct platform_device *pdev)
1129{
1130 struct device *dev = &pdev->dev;
1131 int i;
1132
Guenter Roeck21856962012-01-19 21:49:20 -08001133 for (i = 0; i < ARRAY_SIZE(vt1211_in_attr_group); i++)
1134 sysfs_remove_group(&dev->kobj, &vt1211_in_attr_group[i]);
1135
1136 for (i = 0; i < ARRAY_SIZE(vt1211_temp_attr_group); i++)
1137 sysfs_remove_group(&dev->kobj, &vt1211_temp_attr_group[i]);
1138
Juerg Haefligerab413192006-09-24 20:54:04 +02001139 for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_fan_pwm); i++) {
1140 device_remove_file(dev,
1141 &vt1211_sysfs_fan_pwm[i].dev_attr);
1142 }
Guenter Roeckb162c032012-01-15 06:52:33 -08001143 for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_misc); i++)
Juerg Haefligerab413192006-09-24 20:54:04 +02001144 device_remove_file(dev, &vt1211_sysfs_misc[i]);
Juerg Haefligerab413192006-09-24 20:54:04 +02001145}
1146
Bill Pemberton6c931ae2012-11-19 13:22:35 -05001147static int vt1211_probe(struct platform_device *pdev)
Juerg Haefligerab413192006-09-24 20:54:04 +02001148{
1149 struct device *dev = &pdev->dev;
1150 struct vt1211_data *data;
1151 struct resource *res;
1152 int i, err;
1153
Guenter Roeck84269ed2012-06-02 11:35:54 -07001154 data = devm_kzalloc(dev, sizeof(struct vt1211_data), GFP_KERNEL);
Jingoo Han5b209952014-04-29 17:13:50 +09001155 if (!data)
Guenter Roeck84269ed2012-06-02 11:35:54 -07001156 return -ENOMEM;
Juerg Haefligerab413192006-09-24 20:54:04 +02001157
1158 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
Guenter Roeck84269ed2012-06-02 11:35:54 -07001159 if (!devm_request_region(dev, res->start, resource_size(res),
1160 DRVNAME)) {
Jean Delvarece7ee4e2007-05-08 17:21:59 +02001161 dev_err(dev, "Failed to request region 0x%lx-0x%lx\n",
1162 (unsigned long)res->start, (unsigned long)res->end);
Guenter Roeck84269ed2012-06-02 11:35:54 -07001163 return -EBUSY;
Jean Delvarece7ee4e2007-05-08 17:21:59 +02001164 }
Juerg Haefligerab413192006-09-24 20:54:04 +02001165 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 */
Guenter Roeck21856962012-01-19 21:49:20 -08001175 for (i = 0; i < ARRAY_SIZE(vt1211_in_attr_group); i++) {
Juerg Haefligerab413192006-09-24 20:54:04 +02001176 if (ISVOLT(i, data->uch_config)) {
Guenter Roeck21856962012-01-19 21:49:20 -08001177 err = sysfs_create_group(&dev->kobj,
1178 &vt1211_in_attr_group[i]);
1179 if (err)
Juerg Haefligerab413192006-09-24 20:54:04 +02001180 goto EXIT_DEV_REMOVE;
Juerg Haefligerab413192006-09-24 20:54:04 +02001181 }
1182 }
Guenter Roeck21856962012-01-19 21:49:20 -08001183 for (i = 0; i < ARRAY_SIZE(vt1211_temp_attr_group); i++) {
Juerg Haefligerab413192006-09-24 20:54:04 +02001184 if (ISTEMP(i, data->uch_config)) {
Guenter Roeck21856962012-01-19 21:49:20 -08001185 err = sysfs_create_group(&dev->kobj,
1186 &vt1211_temp_attr_group[i]);
1187 if (err)
Juerg Haefligerab413192006-09-24 20:54:04 +02001188 goto EXIT_DEV_REMOVE;
Juerg Haefligerab413192006-09-24 20:54:04 +02001189 }
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);
Guenter Roeckb162c032012-01-15 06:52:33 -08001194 if (err)
Juerg Haefligerab413192006-09-24 20:54:04 +02001195 goto EXIT_DEV_REMOVE;
Juerg Haefligerab413192006-09-24 20:54:04 +02001196 }
1197 for (i = 0; i < ARRAY_SIZE(vt1211_sysfs_misc); i++) {
1198 err = device_create_file(dev,
1199 &vt1211_sysfs_misc[i]);
Guenter Roeckb162c032012-01-15 06:52:33 -08001200 if (err)
Juerg Haefligerab413192006-09-24 20:54:04 +02001201 goto EXIT_DEV_REMOVE;
Juerg Haefligerab413192006-09-24 20:54:04 +02001202 }
1203
1204 /* Register device */
Tony Jones1beeffe2007-08-20 13:46:20 -07001205 data->hwmon_dev = hwmon_device_register(dev);
1206 if (IS_ERR(data->hwmon_dev)) {
1207 err = PTR_ERR(data->hwmon_dev);
Juerg Haefligerab413192006-09-24 20:54:04 +02001208 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);
Juerg Haefligerab413192006-09-24 20:54:04 +02001218 return err;
1219}
1220
Bill Pemberton281dfd02012-11-19 13:25:51 -05001221static int vt1211_remove(struct platform_device *pdev)
Juerg Haefligerab413192006-09-24 20:54:04 +02001222{
1223 struct vt1211_data *data = platform_get_drvdata(pdev);
1224
Tony Jones1beeffe2007-08-20 13:46:20 -07001225 hwmon_device_unregister(data->hwmon_dev);
Juerg Haefligerab413192006-09-24 20:54:04 +02001226 vt1211_remove_sysfs(pdev);
Jean Delvarece7ee4e2007-05-08 17:21:59 +02001227
Juerg Haefligerab413192006-09-24 20:54:04 +02001228 return 0;
1229}
1230
1231static struct platform_driver vt1211_driver = {
1232 .driver = {
1233 .owner = THIS_MODULE,
1234 .name = DRVNAME,
1235 },
1236 .probe = vt1211_probe,
Bill Pemberton9e5e9b72012-11-19 13:21:20 -05001237 .remove = vt1211_remove,
Juerg Haefligerab413192006-09-24 20:54:04 +02001238};
1239
1240static int __init vt1211_device_add(unsigned short address)
1241{
1242 struct resource res = {
1243 .start = address,
1244 .end = address + 0x7f,
1245 .flags = IORESOURCE_IO,
1246 };
1247 int err;
1248
1249 pdev = platform_device_alloc(DRVNAME, address);
1250 if (!pdev) {
1251 err = -ENOMEM;
Joe Perches5ed9ba62010-10-20 06:51:52 +00001252 pr_err("Device allocation failed (%d)\n", err);
Juerg Haefligerab413192006-09-24 20:54:04 +02001253 goto EXIT;
1254 }
1255
1256 res.name = pdev->name;
Jean Delvareb9acb642009-01-07 16:37:35 +01001257 err = acpi_check_resource_conflict(&res);
1258 if (err)
Hans de Goede18632f82009-02-17 19:59:54 +01001259 goto EXIT_DEV_PUT;
Jean Delvareb9acb642009-01-07 16:37:35 +01001260
Juerg Haefligerab413192006-09-24 20:54:04 +02001261 err = platform_device_add_resources(pdev, &res, 1);
1262 if (err) {
Joe Perches5ed9ba62010-10-20 06:51:52 +00001263 pr_err("Device resource addition failed (%d)\n", err);
Juerg Haefligerab413192006-09-24 20:54:04 +02001264 goto EXIT_DEV_PUT;
1265 }
1266
1267 err = platform_device_add(pdev);
1268 if (err) {
Joe Perches5ed9ba62010-10-20 06:51:52 +00001269 pr_err("Device addition failed (%d)\n", err);
Juerg Haefligerab413192006-09-24 20:54:04 +02001270 goto EXIT_DEV_PUT;
1271 }
1272
1273 return 0;
1274
1275EXIT_DEV_PUT:
1276 platform_device_put(pdev);
1277EXIT:
1278 return err;
1279}
1280
Juerg Haefliger2219cd82007-02-14 21:15:05 +01001281static int __init vt1211_find(int sio_cip, unsigned short *address)
Juerg Haefligerab413192006-09-24 20:54:04 +02001282{
1283 int err = -ENODEV;
Jean Delvare67b671b2007-12-06 23:13:42 +01001284 int devid;
Juerg Haefligerab413192006-09-24 20:54:04 +02001285
Juerg Haefliger2219cd82007-02-14 21:15:05 +01001286 superio_enter(sio_cip);
Juerg Haefligerab413192006-09-24 20:54:04 +02001287
Jean Delvare67b671b2007-12-06 23:13:42 +01001288 devid = force_id ? force_id : superio_inb(sio_cip, SIO_VT1211_DEVID);
Guenter Roeckb162c032012-01-15 06:52:33 -08001289 if (devid != SIO_VT1211_ID)
Juerg Haefligerab413192006-09-24 20:54:04 +02001290 goto EXIT;
Juerg Haefligerab413192006-09-24 20:54:04 +02001291
Juerg Haefliger2219cd82007-02-14 21:15:05 +01001292 superio_select(sio_cip, SIO_VT1211_LDN_HWMON);
Juerg Haefligerab413192006-09-24 20:54:04 +02001293
Juerg Haefliger2219cd82007-02-14 21:15:05 +01001294 if ((superio_inb(sio_cip, SIO_VT1211_ACTIVE) & 1) == 0) {
Joe Perches5ed9ba62010-10-20 06:51:52 +00001295 pr_warn("HW monitor is disabled, skipping\n");
Juerg Haefligerab413192006-09-24 20:54:04 +02001296 goto EXIT;
1297 }
1298
Juerg Haefliger2219cd82007-02-14 21:15:05 +01001299 *address = ((superio_inb(sio_cip, SIO_VT1211_BADDR) << 8) |
1300 (superio_inb(sio_cip, SIO_VT1211_BADDR + 1))) & 0xff00;
Juerg Haefligerab413192006-09-24 20:54:04 +02001301 if (*address == 0) {
Joe Perches5ed9ba62010-10-20 06:51:52 +00001302 pr_warn("Base address is not set, skipping\n");
Juerg Haefligerab413192006-09-24 20:54:04 +02001303 goto EXIT;
1304 }
1305
1306 err = 0;
Joe Perches5ed9ba62010-10-20 06:51:52 +00001307 pr_info("Found VT1211 chip at 0x%04x, revision %u\n",
1308 *address, superio_inb(sio_cip, SIO_VT1211_DEVREV));
Juerg Haefligerab413192006-09-24 20:54:04 +02001309
1310EXIT:
Juerg Haefliger2219cd82007-02-14 21:15:05 +01001311 superio_exit(sio_cip);
Juerg Haefligerab413192006-09-24 20:54:04 +02001312 return err;
1313}
1314
1315static int __init vt1211_init(void)
1316{
1317 int err;
1318 unsigned short address = 0;
1319
Guenter Roeckb162c032012-01-15 06:52:33 -08001320 err = vt1211_find(SIO_REG_CIP1, &address);
1321 if (err) {
1322 err = vt1211_find(SIO_REG_CIP2, &address);
1323 if (err)
1324 goto EXIT;
Juerg Haefligerab413192006-09-24 20:54:04 +02001325 }
1326
1327 if ((uch_config < -1) || (uch_config > 31)) {
1328 err = -EINVAL;
Guenter Roeckb55f3752013-01-10 10:01:24 -08001329 pr_warn("Invalid UCH configuration %d. Choose a value between 0 and 31.\n",
1330 uch_config);
Guenter Roeckb162c032012-01-15 06:52:33 -08001331 goto EXIT;
Juerg Haefligerab413192006-09-24 20:54:04 +02001332 }
1333
1334 if ((int_mode < -1) || (int_mode > 0)) {
1335 err = -EINVAL;
Guenter Roeckb55f3752013-01-10 10:01:24 -08001336 pr_warn("Invalid interrupt mode %d. Only mode 0 is supported.\n",
1337 int_mode);
Juerg Haefligerab413192006-09-24 20:54:04 +02001338 goto EXIT;
1339 }
1340
Guenter Roeckb162c032012-01-15 06:52:33 -08001341 err = platform_driver_register(&vt1211_driver);
1342 if (err)
1343 goto EXIT;
1344
Juerg Haefligerab413192006-09-24 20:54:04 +02001345 /* Sets global pdev as a side effect */
1346 err = vt1211_device_add(address);
Guenter Roeckb162c032012-01-15 06:52:33 -08001347 if (err)
Juerg Haefligerab413192006-09-24 20:54:04 +02001348 goto EXIT_DRV_UNREGISTER;
Juerg Haefligerab413192006-09-24 20:54:04 +02001349
1350 return 0;
1351
1352EXIT_DRV_UNREGISTER:
1353 platform_driver_unregister(&vt1211_driver);
1354EXIT:
1355 return err;
1356}
1357
1358static void __exit vt1211_exit(void)
1359{
1360 platform_device_unregister(pdev);
1361 platform_driver_unregister(&vt1211_driver);
1362}
1363
1364MODULE_AUTHOR("Juerg Haefliger <juergh@gmail.com>");
1365MODULE_DESCRIPTION("VT1211 sensors");
1366MODULE_LICENSE("GPL");
1367
1368module_init(vt1211_init);
1369module_exit(vt1211_exit);