blob: 9157247fed8e6062877c4428571bb75385e2227b [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 it87.c - Part of lm_sensors, Linux kernel modules for hardware
3 monitoring.
4
Bjorn Helgaas87b4b662008-01-22 07:21:03 -05005 The IT8705F is an LPC-based Super I/O part that contains UARTs, a
6 parallel port, an IR port, a MIDI port, a floppy controller, etc., in
7 addition to an Environment Controller (Enhanced Hardware Monitor and
8 Fan Controller)
9
10 This driver supports only the Environment Controller in the IT8705F and
11 similar parts. The other devices are supported by different drivers.
12
Jean Delvare91749992005-10-08 00:10:00 +020013 Supports: IT8705F Super I/O chip w/LPC interface
Jean Delvare8e9afcb2006-12-12 18:18:28 +010014 IT8712F Super I/O chip w/LPC interface
Jean Delvare17d648b2006-08-28 14:23:46 +020015 IT8716F Super I/O chip w/LPC interface
Jean Delvare87673dd2006-08-28 14:37:19 +020016 IT8718F Super I/O chip w/LPC interface
Jean-Marc Spaggiarib4da93e2009-01-07 16:37:32 +010017 IT8720F Super I/O chip w/LPC interface
Rudolf Marek08a8f6e2007-06-09 10:11:16 -040018 IT8726F Super I/O chip w/LPC interface
Linus Torvalds1da177e2005-04-16 15:20:36 -070019 Sis950 A clone of the IT8705F
20
Jean Delvaref1d8e332007-11-25 16:14:44 +010021 Copyright (C) 2001 Chris Gauthron
Jean Delvare0124dd72007-11-25 16:16:41 +010022 Copyright (C) 2005-2007 Jean Delvare <khali@linux-fr.org>
Linus Torvalds1da177e2005-04-16 15:20:36 -070023
24 This program is free software; you can redistribute it and/or modify
25 it under the terms of the GNU General Public License as published by
26 the Free Software Foundation; either version 2 of the License, or
27 (at your option) any later version.
28
29 This program is distributed in the hope that it will be useful,
30 but WITHOUT ANY WARRANTY; without even the implied warranty of
31 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
32 GNU General Public License for more details.
33
34 You should have received a copy of the GNU General Public License
35 along with this program; if not, write to the Free Software
36 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
37*/
38
Linus Torvalds1da177e2005-04-16 15:20:36 -070039#include <linux/module.h>
40#include <linux/init.h>
41#include <linux/slab.h>
42#include <linux/jiffies.h>
corentin.labbeb74f3fd2007-06-13 20:27:36 +020043#include <linux/platform_device.h>
Mark M. Hoffman943b0832005-07-15 21:39:18 -040044#include <linux/hwmon.h>
Jean Delvare303760b2005-07-31 21:52:01 +020045#include <linux/hwmon-sysfs.h>
46#include <linux/hwmon-vid.h>
Mark M. Hoffman943b0832005-07-15 21:39:18 -040047#include <linux/err.h>
Ingo Molnar9a61bf62006-01-18 23:19:26 +010048#include <linux/mutex.h>
Jean Delvare87808be2006-09-24 21:17:13 +020049#include <linux/sysfs.h>
Jean Delvare98dd22c2008-10-09 15:33:58 +020050#include <linux/string.h>
51#include <linux/dmi.h>
Jean Delvareb9acb642009-01-07 16:37:35 +010052#include <linux/acpi.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070053#include <asm/io.h>
54
corentin.labbeb74f3fd2007-06-13 20:27:36 +020055#define DRVNAME "it87"
Linus Torvalds1da177e2005-04-16 15:20:36 -070056
Jean-Marc Spaggiarib4da93e2009-01-07 16:37:32 +010057enum chips { it87, it8712, it8716, it8718, it8720 };
Linus Torvalds1da177e2005-04-16 15:20:36 -070058
Jean Delvare67b671b2007-12-06 23:13:42 +010059static unsigned short force_id;
60module_param(force_id, ushort, 0);
61MODULE_PARM_DESC(force_id, "Override the detected device ID");
62
corentin.labbeb74f3fd2007-06-13 20:27:36 +020063static struct platform_device *pdev;
64
Linus Torvalds1da177e2005-04-16 15:20:36 -070065#define REG 0x2e /* The register to read/write */
66#define DEV 0x07 /* Register: Logical device select */
67#define VAL 0x2f /* The value to read/write */
68#define PME 0x04 /* The device with the fan registers in it */
Jean-Marc Spaggiarib4da93e2009-01-07 16:37:32 +010069
70/* The device with the IT8718F/IT8720F VID value in it */
71#define GPIO 0x07
72
Linus Torvalds1da177e2005-04-16 15:20:36 -070073#define DEVID 0x20 /* Register: Device ID */
74#define DEVREV 0x22 /* Register: Device Revision */
75
76static inline int
77superio_inb(int reg)
78{
79 outb(reg, REG);
80 return inb(VAL);
81}
82
83static int superio_inw(int reg)
84{
85 int val;
86 outb(reg++, REG);
87 val = inb(VAL) << 8;
88 outb(reg, REG);
89 val |= inb(VAL);
90 return val;
91}
92
93static inline void
Jean Delvare87673dd2006-08-28 14:37:19 +020094superio_select(int ldn)
Linus Torvalds1da177e2005-04-16 15:20:36 -070095{
96 outb(DEV, REG);
Jean Delvare87673dd2006-08-28 14:37:19 +020097 outb(ldn, VAL);
Linus Torvalds1da177e2005-04-16 15:20:36 -070098}
99
100static inline void
101superio_enter(void)
102{
103 outb(0x87, REG);
104 outb(0x01, REG);
105 outb(0x55, REG);
106 outb(0x55, REG);
107}
108
109static inline void
110superio_exit(void)
111{
112 outb(0x02, REG);
113 outb(0x02, VAL);
114}
115
Jean Delvare87673dd2006-08-28 14:37:19 +0200116/* Logical device 4 registers */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700117#define IT8712F_DEVID 0x8712
118#define IT8705F_DEVID 0x8705
Jean Delvare17d648b2006-08-28 14:23:46 +0200119#define IT8716F_DEVID 0x8716
Jean Delvare87673dd2006-08-28 14:37:19 +0200120#define IT8718F_DEVID 0x8718
Jean-Marc Spaggiarib4da93e2009-01-07 16:37:32 +0100121#define IT8720F_DEVID 0x8720
Rudolf Marek08a8f6e2007-06-09 10:11:16 -0400122#define IT8726F_DEVID 0x8726
Linus Torvalds1da177e2005-04-16 15:20:36 -0700123#define IT87_ACT_REG 0x30
124#define IT87_BASE_REG 0x60
125
Jean Delvare87673dd2006-08-28 14:37:19 +0200126/* Logical device 7 registers (IT8712F and later) */
127#define IT87_SIO_PINX2_REG 0x2c /* Pin selection */
128#define IT87_SIO_VID_REG 0xfc /* VID value */
129
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130/* Update battery voltage after every reading if true */
131static int update_vbat;
132
133/* Not all BIOSes properly configure the PWM registers */
134static int fix_pwm_polarity;
135
Linus Torvalds1da177e2005-04-16 15:20:36 -0700136/* Many IT87 constants specified below */
137
138/* Length of ISA address segment */
139#define IT87_EXTENT 8
140
Bjorn Helgaas87b4b662008-01-22 07:21:03 -0500141/* Length of ISA address segment for Environmental Controller */
142#define IT87_EC_EXTENT 2
143
144/* Offset of EC registers from ISA base address */
145#define IT87_EC_OFFSET 5
146
147/* Where are the ISA address/data registers relative to the EC base address */
148#define IT87_ADDR_REG_OFFSET 0
149#define IT87_DATA_REG_OFFSET 1
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150
151/*----- The IT87 registers -----*/
152
153#define IT87_REG_CONFIG 0x00
154
155#define IT87_REG_ALARM1 0x01
156#define IT87_REG_ALARM2 0x02
157#define IT87_REG_ALARM3 0x03
158
Jean-Marc Spaggiarib4da93e2009-01-07 16:37:32 +0100159/* The IT8718F and IT8720F have the VID value in a different register, in
160 Super-I/O configuration space. */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700161#define IT87_REG_VID 0x0a
Andrew Paprocki04751692008-08-06 22:41:06 +0200162/* The IT8705F and IT8712F earlier than revision 0x08 use register 0x0b
163 for fan divisors. Later IT8712F revisions must use 16-bit tachometer
164 mode. */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700165#define IT87_REG_FAN_DIV 0x0b
Jean Delvare17d648b2006-08-28 14:23:46 +0200166#define IT87_REG_FAN_16BIT 0x0c
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167
168/* Monitors: 9 voltage (0 to 7, battery), 3 temp (1 to 3), 3 fan (1 to 3) */
169
Jean Delvarec7f1f712007-09-03 17:11:46 +0200170static const u8 IT87_REG_FAN[] = { 0x0d, 0x0e, 0x0f, 0x80, 0x82 };
171static const u8 IT87_REG_FAN_MIN[] = { 0x10, 0x11, 0x12, 0x84, 0x86 };
172static const u8 IT87_REG_FANX[] = { 0x18, 0x19, 0x1a, 0x81, 0x83 };
173static const u8 IT87_REG_FANX_MIN[] = { 0x1b, 0x1c, 0x1d, 0x85, 0x87 };
Linus Torvalds1da177e2005-04-16 15:20:36 -0700174#define IT87_REG_FAN_MAIN_CTRL 0x13
175#define IT87_REG_FAN_CTL 0x14
176#define IT87_REG_PWM(nr) (0x15 + (nr))
177
178#define IT87_REG_VIN(nr) (0x20 + (nr))
179#define IT87_REG_TEMP(nr) (0x29 + (nr))
180
181#define IT87_REG_VIN_MAX(nr) (0x30 + (nr) * 2)
182#define IT87_REG_VIN_MIN(nr) (0x31 + (nr) * 2)
183#define IT87_REG_TEMP_HIGH(nr) (0x40 + (nr) * 2)
184#define IT87_REG_TEMP_LOW(nr) (0x41 + (nr) * 2)
185
Linus Torvalds1da177e2005-04-16 15:20:36 -0700186#define IT87_REG_VIN_ENABLE 0x50
187#define IT87_REG_TEMP_ENABLE 0x51
188
189#define IT87_REG_CHIPID 0x58
190
191#define IN_TO_REG(val) (SENSORS_LIMIT((((val) + 8)/16),0,255))
192#define IN_FROM_REG(val) ((val) * 16)
193
194static inline u8 FAN_TO_REG(long rpm, int div)
195{
196 if (rpm == 0)
197 return 255;
198 rpm = SENSORS_LIMIT(rpm, 1, 1000000);
199 return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1,
200 254);
201}
202
Jean Delvare17d648b2006-08-28 14:23:46 +0200203static inline u16 FAN16_TO_REG(long rpm)
204{
205 if (rpm == 0)
206 return 0xffff;
207 return SENSORS_LIMIT((1350000 + rpm) / (rpm * 2), 1, 0xfffe);
208}
209
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210#define FAN_FROM_REG(val,div) ((val)==0?-1:(val)==255?0:1350000/((val)*(div)))
Jean Delvare17d648b2006-08-28 14:23:46 +0200211/* The divider is fixed to 2 in 16-bit mode */
212#define FAN16_FROM_REG(val) ((val)==0?-1:(val)==0xffff?0:1350000/((val)*2))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700213
214#define TEMP_TO_REG(val) (SENSORS_LIMIT(((val)<0?(((val)-500)/1000):\
215 ((val)+500)/1000),-128,127))
Jean Delvaree267d252009-03-12 13:36:39 +0100216#define TEMP_FROM_REG(val) ((val) * 1000)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217
Linus Torvalds1da177e2005-04-16 15:20:36 -0700218#define PWM_TO_REG(val) ((val) >> 1)
219#define PWM_FROM_REG(val) (((val)&0x7f) << 1)
220
221static int DIV_TO_REG(int val)
222{
223 int answer = 0;
Jean Delvareb9e349f2006-08-28 14:26:22 +0200224 while (answer < 7 && (val >>= 1))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700225 answer++;
226 return answer;
227}
228#define DIV_FROM_REG(val) (1 << (val))
229
Jean Delvaref8d0c192007-02-14 21:15:02 +0100230static const unsigned int pwm_freq[8] = {
231 48000000 / 128,
232 24000000 / 128,
233 12000000 / 128,
234 8000000 / 128,
235 6000000 / 128,
236 3000000 / 128,
237 1500000 / 128,
238 750000 / 128,
239};
240
Linus Torvalds1da177e2005-04-16 15:20:36 -0700241
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200242struct it87_sio_data {
243 enum chips type;
244 /* Values read from Super-I/O config space */
Andrew Paprocki04751692008-08-06 22:41:06 +0200245 u8 revision;
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200246 u8 vid_value;
Jean Delvare98dd22c2008-10-09 15:33:58 +0200247 /* Values set based on DMI strings */
248 u8 skip_pwm;
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200249};
250
Jean Delvareed6bafb2007-02-14 21:15:03 +0100251/* For each registered chip, we need to keep some data in memory.
252 The structure is dynamically allocated. */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700253struct it87_data {
Tony Jones1beeffe2007-08-20 13:46:20 -0700254 struct device *hwmon_dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700255 enum chips type;
Andrew Paprocki04751692008-08-06 22:41:06 +0200256 u8 revision;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700257
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200258 unsigned short addr;
259 const char *name;
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100260 struct mutex update_lock;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700261 char valid; /* !=0 if following fields are valid */
262 unsigned long last_updated; /* In jiffies */
263
264 u8 in[9]; /* Register value */
Jean Delvare3543a532006-08-28 14:27:25 +0200265 u8 in_max[8]; /* Register value */
266 u8 in_min[8]; /* Register value */
Jean Delvare9060f8b2006-08-28 14:24:17 +0200267 u8 has_fan; /* Bitfield, fans enabled */
Jean Delvarec7f1f712007-09-03 17:11:46 +0200268 u16 fan[5]; /* Register values, possibly combined */
269 u16 fan_min[5]; /* Register values, possibly combined */
Jean Delvaree267d252009-03-12 13:36:39 +0100270 s8 temp[3]; /* Register value */
271 s8 temp_high[3]; /* Register value */
272 s8 temp_low[3]; /* Register value */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700273 u8 sensor; /* Register value */
274 u8 fan_div[3]; /* Register encoding, shifted right */
275 u8 vid; /* Register encoding, combined */
Jean Delvarea7be58a2005-12-18 16:40:14 +0100276 u8 vrm;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700277 u32 alarms; /* Register encoding, combined */
278 u8 fan_main_ctrl; /* Register value */
Jean Delvaref8d0c192007-02-14 21:15:02 +0100279 u8 fan_ctl; /* Register value */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700280 u8 manual_pwm_ctl[3]; /* manual PWM value set by user */
281};
282
Andrew Paprocki04751692008-08-06 22:41:06 +0200283static inline int has_16bit_fans(const struct it87_data *data)
284{
Andrew Paprocki816d8c62008-08-06 22:41:06 +0200285 /* IT8705F Datasheet 0.4.1, 3h == Version G.
Andrew Paprocki859b9ef2008-09-20 10:25:19 +0200286 IT8712F Datasheet 0.9.1, section 8.3.5 indicates 8h == Version J.
Andrew Paprocki816d8c62008-08-06 22:41:06 +0200287 These are the first revisions with 16bit tachometer support. */
288 return (data->type == it87 && data->revision >= 0x03)
Andrew Paprocki859b9ef2008-09-20 10:25:19 +0200289 || (data->type == it8712 && data->revision >= 0x08)
Andrew Paprocki04751692008-08-06 22:41:06 +0200290 || data->type == it8716
Jean-Marc Spaggiarib4da93e2009-01-07 16:37:32 +0100291 || data->type == it8718
292 || data->type == it8720;
Andrew Paprocki04751692008-08-06 22:41:06 +0200293}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700294
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200295static int it87_probe(struct platform_device *pdev);
Jean Delvared0546122007-07-22 12:09:48 +0200296static int __devexit it87_remove(struct platform_device *pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700297
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200298static int it87_read_value(struct it87_data *data, u8 reg);
299static void it87_write_value(struct it87_data *data, u8 reg, u8 value);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700300static struct it87_data *it87_update_device(struct device *dev);
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200301static int it87_check_pwm(struct device *dev);
302static void it87_init_device(struct platform_device *pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700303
304
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200305static struct platform_driver it87_driver = {
Laurent Riffardcdaf7932005-11-26 20:37:41 +0100306 .driver = {
Jean Delvare87218842006-09-03 22:36:14 +0200307 .owner = THIS_MODULE,
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200308 .name = DRVNAME,
Laurent Riffardcdaf7932005-11-26 20:37:41 +0100309 },
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200310 .probe = it87_probe,
311 .remove = __devexit_p(it87_remove),
Jean Delvarefde09502005-07-19 23:51:07 +0200312};
313
Jean Delvare20ad93d2005-06-05 11:53:25 +0200314static ssize_t show_in(struct device *dev, struct device_attribute *attr,
315 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700316{
Jean Delvare20ad93d2005-06-05 11:53:25 +0200317 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
318 int nr = sensor_attr->index;
319
Linus Torvalds1da177e2005-04-16 15:20:36 -0700320 struct it87_data *data = it87_update_device(dev);
321 return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr]));
322}
323
Jean Delvare20ad93d2005-06-05 11:53:25 +0200324static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
325 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700326{
Jean Delvare20ad93d2005-06-05 11:53:25 +0200327 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
328 int nr = sensor_attr->index;
329
Linus Torvalds1da177e2005-04-16 15:20:36 -0700330 struct it87_data *data = it87_update_device(dev);
331 return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr]));
332}
333
Jean Delvare20ad93d2005-06-05 11:53:25 +0200334static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
335 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700336{
Jean Delvare20ad93d2005-06-05 11:53:25 +0200337 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
338 int nr = sensor_attr->index;
339
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340 struct it87_data *data = it87_update_device(dev);
341 return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr]));
342}
343
Jean Delvare20ad93d2005-06-05 11:53:25 +0200344static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
345 const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700346{
Jean Delvare20ad93d2005-06-05 11:53:25 +0200347 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
348 int nr = sensor_attr->index;
349
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200350 struct it87_data *data = dev_get_drvdata(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700351 unsigned long val = simple_strtoul(buf, NULL, 10);
352
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100353 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700354 data->in_min[nr] = IN_TO_REG(val);
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200355 it87_write_value(data, IT87_REG_VIN_MIN(nr),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700356 data->in_min[nr]);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100357 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700358 return count;
359}
Jean Delvare20ad93d2005-06-05 11:53:25 +0200360static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
361 const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700362{
Jean Delvare20ad93d2005-06-05 11:53:25 +0200363 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
364 int nr = sensor_attr->index;
365
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200366 struct it87_data *data = dev_get_drvdata(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700367 unsigned long val = simple_strtoul(buf, NULL, 10);
368
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100369 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700370 data->in_max[nr] = IN_TO_REG(val);
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200371 it87_write_value(data, IT87_REG_VIN_MAX(nr),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700372 data->in_max[nr]);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100373 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700374 return count;
375}
376
377#define show_in_offset(offset) \
Jean Delvare20ad93d2005-06-05 11:53:25 +0200378static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
379 show_in, NULL, offset);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700380
381#define limit_in_offset(offset) \
Jean Delvare20ad93d2005-06-05 11:53:25 +0200382static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
383 show_in_min, set_in_min, offset); \
384static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
385 show_in_max, set_in_max, offset);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700386
387show_in_offset(0);
388limit_in_offset(0);
389show_in_offset(1);
390limit_in_offset(1);
391show_in_offset(2);
392limit_in_offset(2);
393show_in_offset(3);
394limit_in_offset(3);
395show_in_offset(4);
396limit_in_offset(4);
397show_in_offset(5);
398limit_in_offset(5);
399show_in_offset(6);
400limit_in_offset(6);
401show_in_offset(7);
402limit_in_offset(7);
403show_in_offset(8);
404
405/* 3 temperatures */
Jean Delvare20ad93d2005-06-05 11:53:25 +0200406static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
407 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700408{
Jean Delvare20ad93d2005-06-05 11:53:25 +0200409 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
410 int nr = sensor_attr->index;
411
Linus Torvalds1da177e2005-04-16 15:20:36 -0700412 struct it87_data *data = it87_update_device(dev);
413 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr]));
414}
Jean Delvare20ad93d2005-06-05 11:53:25 +0200415static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
416 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700417{
Jean Delvare20ad93d2005-06-05 11:53:25 +0200418 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
419 int nr = sensor_attr->index;
420
Linus Torvalds1da177e2005-04-16 15:20:36 -0700421 struct it87_data *data = it87_update_device(dev);
422 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[nr]));
423}
Jean Delvare20ad93d2005-06-05 11:53:25 +0200424static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr,
425 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700426{
Jean Delvare20ad93d2005-06-05 11:53:25 +0200427 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
428 int nr = sensor_attr->index;
429
Linus Torvalds1da177e2005-04-16 15:20:36 -0700430 struct it87_data *data = it87_update_device(dev);
431 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_low[nr]));
432}
Jean Delvare20ad93d2005-06-05 11:53:25 +0200433static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
434 const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700435{
Jean Delvare20ad93d2005-06-05 11:53:25 +0200436 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
437 int nr = sensor_attr->index;
438
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200439 struct it87_data *data = dev_get_drvdata(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700440 int val = simple_strtol(buf, NULL, 10);
441
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100442 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700443 data->temp_high[nr] = TEMP_TO_REG(val);
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200444 it87_write_value(data, IT87_REG_TEMP_HIGH(nr), data->temp_high[nr]);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100445 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700446 return count;
447}
Jean Delvare20ad93d2005-06-05 11:53:25 +0200448static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
449 const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700450{
Jean Delvare20ad93d2005-06-05 11:53:25 +0200451 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
452 int nr = sensor_attr->index;
453
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200454 struct it87_data *data = dev_get_drvdata(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700455 int val = simple_strtol(buf, NULL, 10);
456
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100457 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700458 data->temp_low[nr] = TEMP_TO_REG(val);
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200459 it87_write_value(data, IT87_REG_TEMP_LOW(nr), data->temp_low[nr]);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100460 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700461 return count;
462}
463#define show_temp_offset(offset) \
Jean Delvare20ad93d2005-06-05 11:53:25 +0200464static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
465 show_temp, NULL, offset - 1); \
466static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
467 show_temp_max, set_temp_max, offset - 1); \
468static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
469 show_temp_min, set_temp_min, offset - 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700470
471show_temp_offset(1);
472show_temp_offset(2);
473show_temp_offset(3);
474
Jean Delvare20ad93d2005-06-05 11:53:25 +0200475static ssize_t show_sensor(struct device *dev, struct device_attribute *attr,
476 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700477{
Jean Delvare20ad93d2005-06-05 11:53:25 +0200478 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
479 int nr = sensor_attr->index;
480
Linus Torvalds1da177e2005-04-16 15:20:36 -0700481 struct it87_data *data = it87_update_device(dev);
482 u8 reg = data->sensor; /* In case the value is updated while we use it */
483
484 if (reg & (1 << nr))
485 return sprintf(buf, "3\n"); /* thermal diode */
486 if (reg & (8 << nr))
Jean Delvare4ed10772008-10-17 17:51:16 +0200487 return sprintf(buf, "4\n"); /* thermistor */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700488 return sprintf(buf, "0\n"); /* disabled */
489}
Jean Delvare20ad93d2005-06-05 11:53:25 +0200490static ssize_t set_sensor(struct device *dev, struct device_attribute *attr,
491 const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700492{
Jean Delvare20ad93d2005-06-05 11:53:25 +0200493 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
494 int nr = sensor_attr->index;
495
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200496 struct it87_data *data = dev_get_drvdata(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700497 int val = simple_strtol(buf, NULL, 10);
498
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100499 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700500
501 data->sensor &= ~(1 << nr);
502 data->sensor &= ~(8 << nr);
Jean Delvare4ed10772008-10-17 17:51:16 +0200503 if (val == 2) { /* backwards compatibility */
504 dev_warn(dev, "Sensor type 2 is deprecated, please use 4 "
505 "instead\n");
506 val = 4;
507 }
508 /* 3 = thermal diode; 4 = thermistor; 0 = disabled */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700509 if (val == 3)
510 data->sensor |= 1 << nr;
Jean Delvare4ed10772008-10-17 17:51:16 +0200511 else if (val == 4)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700512 data->sensor |= 8 << nr;
513 else if (val != 0) {
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100514 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700515 return -EINVAL;
516 }
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200517 it87_write_value(data, IT87_REG_TEMP_ENABLE, data->sensor);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100518 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700519 return count;
520}
521#define show_sensor_offset(offset) \
Jean Delvare20ad93d2005-06-05 11:53:25 +0200522static SENSOR_DEVICE_ATTR(temp##offset##_type, S_IRUGO | S_IWUSR, \
523 show_sensor, set_sensor, offset - 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700524
525show_sensor_offset(1);
526show_sensor_offset(2);
527show_sensor_offset(3);
528
529/* 3 Fans */
Jean Delvare20ad93d2005-06-05 11:53:25 +0200530static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
531 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700532{
Jean Delvare20ad93d2005-06-05 11:53:25 +0200533 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
534 int nr = sensor_attr->index;
535
Linus Torvalds1da177e2005-04-16 15:20:36 -0700536 struct it87_data *data = it87_update_device(dev);
537 return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan[nr],
538 DIV_FROM_REG(data->fan_div[nr])));
539}
Jean Delvare20ad93d2005-06-05 11:53:25 +0200540static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr,
541 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700542{
Jean Delvare20ad93d2005-06-05 11:53:25 +0200543 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
544 int nr = sensor_attr->index;
545
Linus Torvalds1da177e2005-04-16 15:20:36 -0700546 struct it87_data *data = it87_update_device(dev);
547 return sprintf(buf,"%d\n",
548 FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr])));
549}
Jean Delvare20ad93d2005-06-05 11:53:25 +0200550static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
551 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700552{
Jean Delvare20ad93d2005-06-05 11:53:25 +0200553 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
554 int nr = sensor_attr->index;
555
Linus Torvalds1da177e2005-04-16 15:20:36 -0700556 struct it87_data *data = it87_update_device(dev);
557 return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]));
558}
Jean Delvare20ad93d2005-06-05 11:53:25 +0200559static ssize_t show_pwm_enable(struct device *dev, struct device_attribute *attr,
560 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700561{
Jean Delvare20ad93d2005-06-05 11:53:25 +0200562 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
563 int nr = sensor_attr->index;
564
Linus Torvalds1da177e2005-04-16 15:20:36 -0700565 struct it87_data *data = it87_update_device(dev);
566 return sprintf(buf,"%d\n", (data->fan_main_ctrl & (1 << nr)) ? 1 : 0);
567}
Jean Delvare20ad93d2005-06-05 11:53:25 +0200568static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
569 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700570{
Jean Delvare20ad93d2005-06-05 11:53:25 +0200571 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
572 int nr = sensor_attr->index;
573
Linus Torvalds1da177e2005-04-16 15:20:36 -0700574 struct it87_data *data = it87_update_device(dev);
575 return sprintf(buf,"%d\n", data->manual_pwm_ctl[nr]);
576}
Jean Delvaref8d0c192007-02-14 21:15:02 +0100577static ssize_t show_pwm_freq(struct device *dev, struct device_attribute *attr,
578 char *buf)
579{
580 struct it87_data *data = it87_update_device(dev);
581 int index = (data->fan_ctl >> 4) & 0x07;
582
583 return sprintf(buf, "%u\n", pwm_freq[index]);
584}
Jean Delvare20ad93d2005-06-05 11:53:25 +0200585static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
586 const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700587{
Jean Delvare20ad93d2005-06-05 11:53:25 +0200588 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
589 int nr = sensor_attr->index;
590
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200591 struct it87_data *data = dev_get_drvdata(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700592 int val = simple_strtol(buf, NULL, 10);
Jean Delvare7f999aa2007-02-14 21:15:03 +0100593 u8 reg;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700594
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100595 mutex_lock(&data->update_lock);
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200596 reg = it87_read_value(data, IT87_REG_FAN_DIV);
Jean Delvare07eab462005-11-23 15:44:31 -0800597 switch (nr) {
598 case 0: data->fan_div[nr] = reg & 0x07; break;
599 case 1: data->fan_div[nr] = (reg >> 3) & 0x07; break;
600 case 2: data->fan_div[nr] = (reg & 0x40) ? 3 : 1; break;
601 }
602
Linus Torvalds1da177e2005-04-16 15:20:36 -0700603 data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
Jean Delvarec7f1f712007-09-03 17:11:46 +0200604 it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan_min[nr]);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100605 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700606 return count;
607}
Jean Delvare20ad93d2005-06-05 11:53:25 +0200608static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
609 const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700610{
Jean Delvare20ad93d2005-06-05 11:53:25 +0200611 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
612 int nr = sensor_attr->index;
613
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200614 struct it87_data *data = dev_get_drvdata(dev);
Jean Delvareb9e349f2006-08-28 14:26:22 +0200615 unsigned long val = simple_strtoul(buf, NULL, 10);
Jean Delvare8ab4ec32006-08-28 14:35:46 +0200616 int min;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700617 u8 old;
618
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100619 mutex_lock(&data->update_lock);
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200620 old = it87_read_value(data, IT87_REG_FAN_DIV);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700621
Jean Delvare8ab4ec32006-08-28 14:35:46 +0200622 /* Save fan min limit */
623 min = FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr]));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700624
625 switch (nr) {
626 case 0:
627 case 1:
628 data->fan_div[nr] = DIV_TO_REG(val);
629 break;
630 case 2:
631 if (val < 8)
632 data->fan_div[nr] = 1;
633 else
634 data->fan_div[nr] = 3;
635 }
636 val = old & 0x80;
637 val |= (data->fan_div[0] & 0x07);
638 val |= (data->fan_div[1] & 0x07) << 3;
639 if (data->fan_div[2] == 3)
640 val |= 0x1 << 6;
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200641 it87_write_value(data, IT87_REG_FAN_DIV, val);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700642
Jean Delvare8ab4ec32006-08-28 14:35:46 +0200643 /* Restore fan min limit */
644 data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
Jean Delvarec7f1f712007-09-03 17:11:46 +0200645 it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan_min[nr]);
Jean Delvare8ab4ec32006-08-28 14:35:46 +0200646
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100647 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700648 return count;
649}
Jean Delvare20ad93d2005-06-05 11:53:25 +0200650static ssize_t set_pwm_enable(struct device *dev,
651 struct device_attribute *attr, const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700652{
Jean Delvare20ad93d2005-06-05 11:53:25 +0200653 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
654 int nr = sensor_attr->index;
655
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200656 struct it87_data *data = dev_get_drvdata(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700657 int val = simple_strtol(buf, NULL, 10);
658
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100659 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700660
661 if (val == 0) {
662 int tmp;
663 /* make sure the fan is on when in on/off mode */
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200664 tmp = it87_read_value(data, IT87_REG_FAN_CTL);
665 it87_write_value(data, IT87_REG_FAN_CTL, tmp | (1 << nr));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700666 /* set on/off mode */
667 data->fan_main_ctrl &= ~(1 << nr);
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200668 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700669 } else if (val == 1) {
670 /* set SmartGuardian mode */
671 data->fan_main_ctrl |= (1 << nr);
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200672 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700673 /* set saved pwm value, clear FAN_CTLX PWM mode bit */
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200674 it87_write_value(data, IT87_REG_PWM(nr), PWM_TO_REG(data->manual_pwm_ctl[nr]));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700675 } else {
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100676 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700677 return -EINVAL;
678 }
679
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100680 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700681 return count;
682}
Jean Delvare20ad93d2005-06-05 11:53:25 +0200683static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
684 const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700685{
Jean Delvare20ad93d2005-06-05 11:53:25 +0200686 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
687 int nr = sensor_attr->index;
688
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200689 struct it87_data *data = dev_get_drvdata(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700690 int val = simple_strtol(buf, NULL, 10);
691
692 if (val < 0 || val > 255)
693 return -EINVAL;
694
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100695 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700696 data->manual_pwm_ctl[nr] = val;
697 if (data->fan_main_ctrl & (1 << nr))
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200698 it87_write_value(data, IT87_REG_PWM(nr), PWM_TO_REG(data->manual_pwm_ctl[nr]));
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100699 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700700 return count;
701}
Jean Delvaref8d0c192007-02-14 21:15:02 +0100702static ssize_t set_pwm_freq(struct device *dev,
703 struct device_attribute *attr, const char *buf, size_t count)
704{
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200705 struct it87_data *data = dev_get_drvdata(dev);
Jean Delvaref8d0c192007-02-14 21:15:02 +0100706 unsigned long val = simple_strtoul(buf, NULL, 10);
707 int i;
708
709 /* Search for the nearest available frequency */
710 for (i = 0; i < 7; i++) {
711 if (val > (pwm_freq[i] + pwm_freq[i+1]) / 2)
712 break;
713 }
714
715 mutex_lock(&data->update_lock);
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200716 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL) & 0x8f;
Jean Delvaref8d0c192007-02-14 21:15:02 +0100717 data->fan_ctl |= i << 4;
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200718 it87_write_value(data, IT87_REG_FAN_CTL, data->fan_ctl);
Jean Delvaref8d0c192007-02-14 21:15:02 +0100719 mutex_unlock(&data->update_lock);
720
721 return count;
722}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700723
Jean Delvare20ad93d2005-06-05 11:53:25 +0200724#define show_fan_offset(offset) \
725static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
726 show_fan, NULL, offset - 1); \
727static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
728 show_fan_min, set_fan_min, offset - 1); \
729static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \
730 show_fan_div, set_fan_div, offset - 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700731
732show_fan_offset(1);
733show_fan_offset(2);
734show_fan_offset(3);
735
736#define show_pwm_offset(offset) \
Jean Delvare20ad93d2005-06-05 11:53:25 +0200737static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \
738 show_pwm_enable, set_pwm_enable, offset - 1); \
739static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
Jean Delvaref8d0c192007-02-14 21:15:02 +0100740 show_pwm, set_pwm, offset - 1); \
741static DEVICE_ATTR(pwm##offset##_freq, \
742 (offset == 1 ? S_IRUGO | S_IWUSR : S_IRUGO), \
743 show_pwm_freq, (offset == 1 ? set_pwm_freq : NULL));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700744
745show_pwm_offset(1);
746show_pwm_offset(2);
747show_pwm_offset(3);
748
Jean Delvare17d648b2006-08-28 14:23:46 +0200749/* A different set of callbacks for 16-bit fans */
750static ssize_t show_fan16(struct device *dev, struct device_attribute *attr,
751 char *buf)
752{
753 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
754 int nr = sensor_attr->index;
755 struct it87_data *data = it87_update_device(dev);
756 return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan[nr]));
757}
758
759static ssize_t show_fan16_min(struct device *dev, struct device_attribute *attr,
760 char *buf)
761{
762 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
763 int nr = sensor_attr->index;
764 struct it87_data *data = it87_update_device(dev);
765 return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan_min[nr]));
766}
767
768static ssize_t set_fan16_min(struct device *dev, struct device_attribute *attr,
769 const char *buf, size_t count)
770{
771 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
772 int nr = sensor_attr->index;
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200773 struct it87_data *data = dev_get_drvdata(dev);
Jean Delvare17d648b2006-08-28 14:23:46 +0200774 int val = simple_strtol(buf, NULL, 10);
775
776 mutex_lock(&data->update_lock);
777 data->fan_min[nr] = FAN16_TO_REG(val);
Jean Delvarec7f1f712007-09-03 17:11:46 +0200778 it87_write_value(data, IT87_REG_FAN_MIN[nr],
Jean Delvare17d648b2006-08-28 14:23:46 +0200779 data->fan_min[nr] & 0xff);
Jean Delvarec7f1f712007-09-03 17:11:46 +0200780 it87_write_value(data, IT87_REG_FANX_MIN[nr],
Jean Delvare17d648b2006-08-28 14:23:46 +0200781 data->fan_min[nr] >> 8);
782 mutex_unlock(&data->update_lock);
783 return count;
784}
785
786/* We want to use the same sysfs file names as 8-bit fans, but we need
787 different variable names, so we have to use SENSOR_ATTR instead of
788 SENSOR_DEVICE_ATTR. */
789#define show_fan16_offset(offset) \
790static struct sensor_device_attribute sensor_dev_attr_fan##offset##_input16 \
791 = SENSOR_ATTR(fan##offset##_input, S_IRUGO, \
792 show_fan16, NULL, offset - 1); \
793static struct sensor_device_attribute sensor_dev_attr_fan##offset##_min16 \
794 = SENSOR_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
795 show_fan16_min, set_fan16_min, offset - 1)
796
797show_fan16_offset(1);
798show_fan16_offset(2);
799show_fan16_offset(3);
Jean Delvarec7f1f712007-09-03 17:11:46 +0200800show_fan16_offset(4);
801show_fan16_offset(5);
Jean Delvare17d648b2006-08-28 14:23:46 +0200802
Linus Torvalds1da177e2005-04-16 15:20:36 -0700803/* Alarms */
Yani Ioannou30f74292005-05-17 06:41:35 -0400804static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700805{
806 struct it87_data *data = it87_update_device(dev);
Jean Delvare68188ba2005-05-16 18:52:38 +0200807 return sprintf(buf, "%u\n", data->alarms);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700808}
Jean Delvare1d66c642005-04-18 21:16:59 -0700809static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700810
Jean Delvare0124dd72007-11-25 16:16:41 +0100811static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
812 char *buf)
813{
814 int bitnr = to_sensor_dev_attr(attr)->index;
815 struct it87_data *data = it87_update_device(dev);
816 return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
817}
818static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8);
819static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9);
820static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10);
821static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 11);
822static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 12);
823static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 13);
824static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 14);
825static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 15);
826static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 0);
827static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 1);
828static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 2);
829static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 3);
830static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 6);
831static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 16);
832static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 17);
833static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 18);
834
Linus Torvalds1da177e2005-04-16 15:20:36 -0700835static ssize_t
Yani Ioannou30f74292005-05-17 06:41:35 -0400836show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700837{
Jean Delvare90d66192007-10-08 18:24:35 +0200838 struct it87_data *data = dev_get_drvdata(dev);
Jean Delvarea7be58a2005-12-18 16:40:14 +0100839 return sprintf(buf, "%u\n", data->vrm);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700840}
841static ssize_t
Yani Ioannou30f74292005-05-17 06:41:35 -0400842store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700843{
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200844 struct it87_data *data = dev_get_drvdata(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700845 u32 val;
846
847 val = simple_strtoul(buf, NULL, 10);
848 data->vrm = val;
849
850 return count;
851}
852static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700853
854static ssize_t
Yani Ioannou30f74292005-05-17 06:41:35 -0400855show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700856{
857 struct it87_data *data = it87_update_device(dev);
858 return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm));
859}
860static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
Jean Delvare87808be2006-09-24 21:17:13 +0200861
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200862static ssize_t show_name(struct device *dev, struct device_attribute
863 *devattr, char *buf)
864{
865 struct it87_data *data = dev_get_drvdata(dev);
866 return sprintf(buf, "%s\n", data->name);
867}
868static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
869
Jean Delvare87808be2006-09-24 21:17:13 +0200870static struct attribute *it87_attributes[] = {
871 &sensor_dev_attr_in0_input.dev_attr.attr,
872 &sensor_dev_attr_in1_input.dev_attr.attr,
873 &sensor_dev_attr_in2_input.dev_attr.attr,
874 &sensor_dev_attr_in3_input.dev_attr.attr,
875 &sensor_dev_attr_in4_input.dev_attr.attr,
876 &sensor_dev_attr_in5_input.dev_attr.attr,
877 &sensor_dev_attr_in6_input.dev_attr.attr,
878 &sensor_dev_attr_in7_input.dev_attr.attr,
879 &sensor_dev_attr_in8_input.dev_attr.attr,
880 &sensor_dev_attr_in0_min.dev_attr.attr,
881 &sensor_dev_attr_in1_min.dev_attr.attr,
882 &sensor_dev_attr_in2_min.dev_attr.attr,
883 &sensor_dev_attr_in3_min.dev_attr.attr,
884 &sensor_dev_attr_in4_min.dev_attr.attr,
885 &sensor_dev_attr_in5_min.dev_attr.attr,
886 &sensor_dev_attr_in6_min.dev_attr.attr,
887 &sensor_dev_attr_in7_min.dev_attr.attr,
888 &sensor_dev_attr_in0_max.dev_attr.attr,
889 &sensor_dev_attr_in1_max.dev_attr.attr,
890 &sensor_dev_attr_in2_max.dev_attr.attr,
891 &sensor_dev_attr_in3_max.dev_attr.attr,
892 &sensor_dev_attr_in4_max.dev_attr.attr,
893 &sensor_dev_attr_in5_max.dev_attr.attr,
894 &sensor_dev_attr_in6_max.dev_attr.attr,
895 &sensor_dev_attr_in7_max.dev_attr.attr,
Jean Delvare0124dd72007-11-25 16:16:41 +0100896 &sensor_dev_attr_in0_alarm.dev_attr.attr,
897 &sensor_dev_attr_in1_alarm.dev_attr.attr,
898 &sensor_dev_attr_in2_alarm.dev_attr.attr,
899 &sensor_dev_attr_in3_alarm.dev_attr.attr,
900 &sensor_dev_attr_in4_alarm.dev_attr.attr,
901 &sensor_dev_attr_in5_alarm.dev_attr.attr,
902 &sensor_dev_attr_in6_alarm.dev_attr.attr,
903 &sensor_dev_attr_in7_alarm.dev_attr.attr,
Jean Delvare87808be2006-09-24 21:17:13 +0200904
905 &sensor_dev_attr_temp1_input.dev_attr.attr,
906 &sensor_dev_attr_temp2_input.dev_attr.attr,
907 &sensor_dev_attr_temp3_input.dev_attr.attr,
908 &sensor_dev_attr_temp1_max.dev_attr.attr,
909 &sensor_dev_attr_temp2_max.dev_attr.attr,
910 &sensor_dev_attr_temp3_max.dev_attr.attr,
911 &sensor_dev_attr_temp1_min.dev_attr.attr,
912 &sensor_dev_attr_temp2_min.dev_attr.attr,
913 &sensor_dev_attr_temp3_min.dev_attr.attr,
914 &sensor_dev_attr_temp1_type.dev_attr.attr,
915 &sensor_dev_attr_temp2_type.dev_attr.attr,
916 &sensor_dev_attr_temp3_type.dev_attr.attr,
Jean Delvare0124dd72007-11-25 16:16:41 +0100917 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
918 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
919 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
Jean Delvare87808be2006-09-24 21:17:13 +0200920
921 &dev_attr_alarms.attr,
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200922 &dev_attr_name.attr,
Jean Delvare87808be2006-09-24 21:17:13 +0200923 NULL
924};
925
926static const struct attribute_group it87_group = {
927 .attrs = it87_attributes,
928};
929
930static struct attribute *it87_attributes_opt[] = {
931 &sensor_dev_attr_fan1_input16.dev_attr.attr,
932 &sensor_dev_attr_fan1_min16.dev_attr.attr,
933 &sensor_dev_attr_fan2_input16.dev_attr.attr,
934 &sensor_dev_attr_fan2_min16.dev_attr.attr,
935 &sensor_dev_attr_fan3_input16.dev_attr.attr,
936 &sensor_dev_attr_fan3_min16.dev_attr.attr,
Jean Delvarec7f1f712007-09-03 17:11:46 +0200937 &sensor_dev_attr_fan4_input16.dev_attr.attr,
938 &sensor_dev_attr_fan4_min16.dev_attr.attr,
939 &sensor_dev_attr_fan5_input16.dev_attr.attr,
940 &sensor_dev_attr_fan5_min16.dev_attr.attr,
Jean Delvare87808be2006-09-24 21:17:13 +0200941
942 &sensor_dev_attr_fan1_input.dev_attr.attr,
943 &sensor_dev_attr_fan1_min.dev_attr.attr,
944 &sensor_dev_attr_fan1_div.dev_attr.attr,
945 &sensor_dev_attr_fan2_input.dev_attr.attr,
946 &sensor_dev_attr_fan2_min.dev_attr.attr,
947 &sensor_dev_attr_fan2_div.dev_attr.attr,
948 &sensor_dev_attr_fan3_input.dev_attr.attr,
949 &sensor_dev_attr_fan3_min.dev_attr.attr,
950 &sensor_dev_attr_fan3_div.dev_attr.attr,
951
Jean Delvare0124dd72007-11-25 16:16:41 +0100952 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
953 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
954 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
955 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
956 &sensor_dev_attr_fan5_alarm.dev_attr.attr,
957
Jean Delvare87808be2006-09-24 21:17:13 +0200958 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
959 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
960 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
961 &sensor_dev_attr_pwm1.dev_attr.attr,
962 &sensor_dev_attr_pwm2.dev_attr.attr,
963 &sensor_dev_attr_pwm3.dev_attr.attr,
Jean Delvared5b0b5d2007-12-14 14:41:53 +0100964 &dev_attr_pwm1_freq.attr,
965 &dev_attr_pwm2_freq.attr,
966 &dev_attr_pwm3_freq.attr,
Jean Delvare87808be2006-09-24 21:17:13 +0200967
968 &dev_attr_vrm.attr,
969 &dev_attr_cpu0_vid.attr,
970 NULL
971};
972
973static const struct attribute_group it87_group_opt = {
974 .attrs = it87_attributes_opt,
975};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700976
Jean Delvare2d8672c2005-07-19 23:56:35 +0200977/* SuperIO detection - will change isa_address if a chip is found */
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200978static int __init it87_find(unsigned short *address,
979 struct it87_sio_data *sio_data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700980{
981 int err = -ENODEV;
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200982 u16 chip_type;
Jean Delvare98dd22c2008-10-09 15:33:58 +0200983 const char *board_vendor, *board_name;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700984
985 superio_enter();
Jean Delvare67b671b2007-12-06 23:13:42 +0100986 chip_type = force_id ? force_id : superio_inw(DEVID);
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200987
988 switch (chip_type) {
989 case IT8705F_DEVID:
990 sio_data->type = it87;
991 break;
992 case IT8712F_DEVID:
993 sio_data->type = it8712;
994 break;
995 case IT8716F_DEVID:
996 case IT8726F_DEVID:
997 sio_data->type = it8716;
998 break;
999 case IT8718F_DEVID:
1000 sio_data->type = it8718;
1001 break;
Jean-Marc Spaggiarib4da93e2009-01-07 16:37:32 +01001002 case IT8720F_DEVID:
1003 sio_data->type = it8720;
1004 break;
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001005 case 0xffff: /* No device at all */
1006 goto exit;
1007 default:
1008 pr_debug(DRVNAME ": Unsupported chip (DEVID=0x%x)\n",
1009 chip_type);
1010 goto exit;
1011 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001012
Jean Delvare87673dd2006-08-28 14:37:19 +02001013 superio_select(PME);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001014 if (!(superio_inb(IT87_ACT_REG) & 0x01)) {
1015 pr_info("it87: Device not activated, skipping\n");
1016 goto exit;
1017 }
1018
1019 *address = superio_inw(IT87_BASE_REG) & ~(IT87_EXTENT - 1);
1020 if (*address == 0) {
1021 pr_info("it87: Base address not set, skipping\n");
1022 goto exit;
1023 }
1024
1025 err = 0;
Andrew Paprocki04751692008-08-06 22:41:06 +02001026 sio_data->revision = superio_inb(DEVREV) & 0x0f;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001027 pr_info("it87: Found IT%04xF chip at 0x%x, revision %d\n",
Andrew Paprocki04751692008-08-06 22:41:06 +02001028 chip_type, *address, sio_data->revision);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001029
Jean Delvare87673dd2006-08-28 14:37:19 +02001030 /* Read GPIO config and VID value from LDN 7 (GPIO) */
1031 if (chip_type != IT8705F_DEVID) {
1032 int reg;
1033
1034 superio_select(GPIO);
Jean-Marc Spaggiarib4da93e2009-01-07 16:37:32 +01001035 if ((chip_type == it8718) ||
1036 (chip_type == it8720))
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001037 sio_data->vid_value = superio_inb(IT87_SIO_VID_REG);
Jean Delvare87673dd2006-08-28 14:37:19 +02001038
1039 reg = superio_inb(IT87_SIO_PINX2_REG);
1040 if (reg & (1 << 0))
1041 pr_info("it87: in3 is VCC (+5V)\n");
1042 if (reg & (1 << 1))
1043 pr_info("it87: in7 is VCCH (+5V Stand-By)\n");
1044 }
1045
Jean Delvare98dd22c2008-10-09 15:33:58 +02001046 /* Disable specific features based on DMI strings */
1047 board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR);
1048 board_name = dmi_get_system_info(DMI_BOARD_NAME);
1049 if (board_vendor && board_name) {
1050 if (strcmp(board_vendor, "nVIDIA") == 0
1051 && strcmp(board_name, "FN68PT") == 0) {
1052 /* On the Shuttle SN68PT, FAN_CTL2 is apparently not
1053 connected to a fan, but to something else. One user
1054 has reported instant system power-off when changing
1055 the PWM2 duty cycle, so we disable it.
1056 I use the board name string as the trigger in case
1057 the same board is ever used in other systems. */
1058 pr_info("it87: Disabling pwm2 due to "
1059 "hardware constraints\n");
1060 sio_data->skip_pwm = (1 << 1);
1061 }
1062 }
1063
Linus Torvalds1da177e2005-04-16 15:20:36 -07001064exit:
1065 superio_exit();
1066 return err;
1067}
1068
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001069static int __devinit it87_probe(struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001070{
Linus Torvalds1da177e2005-04-16 15:20:36 -07001071 struct it87_data *data;
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001072 struct resource *res;
1073 struct device *dev = &pdev->dev;
1074 struct it87_sio_data *sio_data = dev->platform_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001075 int err = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001076 int enable_pwm_interface;
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001077 static const char *names[] = {
1078 "it87",
1079 "it8712",
1080 "it8716",
1081 "it8718",
Jean-Marc Spaggiarib4da93e2009-01-07 16:37:32 +01001082 "it8720",
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001083 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07001084
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001085 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
Bjorn Helgaas87b4b662008-01-22 07:21:03 -05001086 if (!request_region(res->start, IT87_EC_EXTENT, DRVNAME)) {
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001087 dev_err(dev, "Failed to request region 0x%lx-0x%lx\n",
1088 (unsigned long)res->start,
Bjorn Helgaas87b4b662008-01-22 07:21:03 -05001089 (unsigned long)(res->start + IT87_EC_EXTENT - 1));
Jean Delvare8e9afcb2006-12-12 18:18:28 +01001090 err = -EBUSY;
1091 goto ERROR0;
1092 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001093
Deepak Saxenaba9c2e82005-10-17 23:08:32 +02001094 if (!(data = kzalloc(sizeof(struct it87_data), GFP_KERNEL))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001095 err = -ENOMEM;
1096 goto ERROR1;
1097 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001098
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001099 data->addr = res->start;
1100 data->type = sio_data->type;
Andrew Paprocki04751692008-08-06 22:41:06 +02001101 data->revision = sio_data->revision;
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001102 data->name = names[sio_data->type];
Linus Torvalds1da177e2005-04-16 15:20:36 -07001103
1104 /* Now, we do the remaining detection. */
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001105 if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80)
1106 || it87_read_value(data, IT87_REG_CHIPID) != 0x90) {
Jean Delvare8e9afcb2006-12-12 18:18:28 +01001107 err = -ENODEV;
1108 goto ERROR2;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001109 }
1110
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001111 platform_set_drvdata(pdev, data);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001112
Ingo Molnar9a61bf62006-01-18 23:19:26 +01001113 mutex_init(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001114
Linus Torvalds1da177e2005-04-16 15:20:36 -07001115 /* Check PWM configuration */
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001116 enable_pwm_interface = it87_check_pwm(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001117
1118 /* Initialize the IT87 chip */
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001119 it87_init_device(pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001120
1121 /* Register sysfs hooks */
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001122 if ((err = sysfs_create_group(&dev->kobj, &it87_group)))
1123 goto ERROR2;
Jean Delvare17d648b2006-08-28 14:23:46 +02001124
Jean Delvare9060f8b2006-08-28 14:24:17 +02001125 /* Do not create fan files for disabled fans */
Andrew Paprocki04751692008-08-06 22:41:06 +02001126 if (has_16bit_fans(data)) {
Jean Delvare87673dd2006-08-28 14:37:19 +02001127 /* 16-bit tachometers */
Jean Delvare9060f8b2006-08-28 14:24:17 +02001128 if (data->has_fan & (1 << 0)) {
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001129 if ((err = device_create_file(dev,
Jean Delvare87808be2006-09-24 21:17:13 +02001130 &sensor_dev_attr_fan1_input16.dev_attr))
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001131 || (err = device_create_file(dev,
Jean Delvare0124dd72007-11-25 16:16:41 +01001132 &sensor_dev_attr_fan1_min16.dev_attr))
1133 || (err = device_create_file(dev,
1134 &sensor_dev_attr_fan1_alarm.dev_attr)))
Jean Delvare87808be2006-09-24 21:17:13 +02001135 goto ERROR4;
Jean Delvare9060f8b2006-08-28 14:24:17 +02001136 }
1137 if (data->has_fan & (1 << 1)) {
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001138 if ((err = device_create_file(dev,
Jean Delvare87808be2006-09-24 21:17:13 +02001139 &sensor_dev_attr_fan2_input16.dev_attr))
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001140 || (err = device_create_file(dev,
Jean Delvare0124dd72007-11-25 16:16:41 +01001141 &sensor_dev_attr_fan2_min16.dev_attr))
1142 || (err = device_create_file(dev,
1143 &sensor_dev_attr_fan2_alarm.dev_attr)))
Jean Delvare87808be2006-09-24 21:17:13 +02001144 goto ERROR4;
Jean Delvare9060f8b2006-08-28 14:24:17 +02001145 }
1146 if (data->has_fan & (1 << 2)) {
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001147 if ((err = device_create_file(dev,
Jean Delvare87808be2006-09-24 21:17:13 +02001148 &sensor_dev_attr_fan3_input16.dev_attr))
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001149 || (err = device_create_file(dev,
Jean Delvare0124dd72007-11-25 16:16:41 +01001150 &sensor_dev_attr_fan3_min16.dev_attr))
1151 || (err = device_create_file(dev,
1152 &sensor_dev_attr_fan3_alarm.dev_attr)))
Jean Delvare87808be2006-09-24 21:17:13 +02001153 goto ERROR4;
Jean Delvare9060f8b2006-08-28 14:24:17 +02001154 }
Jean Delvarec7f1f712007-09-03 17:11:46 +02001155 if (data->has_fan & (1 << 3)) {
1156 if ((err = device_create_file(dev,
1157 &sensor_dev_attr_fan4_input16.dev_attr))
1158 || (err = device_create_file(dev,
Jean Delvare0124dd72007-11-25 16:16:41 +01001159 &sensor_dev_attr_fan4_min16.dev_attr))
1160 || (err = device_create_file(dev,
1161 &sensor_dev_attr_fan4_alarm.dev_attr)))
Jean Delvarec7f1f712007-09-03 17:11:46 +02001162 goto ERROR4;
1163 }
1164 if (data->has_fan & (1 << 4)) {
1165 if ((err = device_create_file(dev,
1166 &sensor_dev_attr_fan5_input16.dev_attr))
1167 || (err = device_create_file(dev,
Jean Delvare0124dd72007-11-25 16:16:41 +01001168 &sensor_dev_attr_fan5_min16.dev_attr))
1169 || (err = device_create_file(dev,
1170 &sensor_dev_attr_fan5_alarm.dev_attr)))
Jean Delvarec7f1f712007-09-03 17:11:46 +02001171 goto ERROR4;
1172 }
Jean Delvare17d648b2006-08-28 14:23:46 +02001173 } else {
Jean Delvare87673dd2006-08-28 14:37:19 +02001174 /* 8-bit tachometers with clock divider */
Jean Delvare9060f8b2006-08-28 14:24:17 +02001175 if (data->has_fan & (1 << 0)) {
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001176 if ((err = device_create_file(dev,
Jean Delvare87808be2006-09-24 21:17:13 +02001177 &sensor_dev_attr_fan1_input.dev_attr))
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001178 || (err = device_create_file(dev,
Jean Delvare87808be2006-09-24 21:17:13 +02001179 &sensor_dev_attr_fan1_min.dev_attr))
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001180 || (err = device_create_file(dev,
Jean Delvare0124dd72007-11-25 16:16:41 +01001181 &sensor_dev_attr_fan1_div.dev_attr))
1182 || (err = device_create_file(dev,
1183 &sensor_dev_attr_fan1_alarm.dev_attr)))
Jean Delvare87808be2006-09-24 21:17:13 +02001184 goto ERROR4;
Jean Delvare9060f8b2006-08-28 14:24:17 +02001185 }
1186 if (data->has_fan & (1 << 1)) {
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001187 if ((err = device_create_file(dev,
Jean Delvare87808be2006-09-24 21:17:13 +02001188 &sensor_dev_attr_fan2_input.dev_attr))
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001189 || (err = device_create_file(dev,
Jean Delvare87808be2006-09-24 21:17:13 +02001190 &sensor_dev_attr_fan2_min.dev_attr))
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001191 || (err = device_create_file(dev,
Jean Delvare0124dd72007-11-25 16:16:41 +01001192 &sensor_dev_attr_fan2_div.dev_attr))
1193 || (err = device_create_file(dev,
1194 &sensor_dev_attr_fan2_alarm.dev_attr)))
Jean Delvare87808be2006-09-24 21:17:13 +02001195 goto ERROR4;
Jean Delvare9060f8b2006-08-28 14:24:17 +02001196 }
1197 if (data->has_fan & (1 << 2)) {
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001198 if ((err = device_create_file(dev,
Jean Delvare87808be2006-09-24 21:17:13 +02001199 &sensor_dev_attr_fan3_input.dev_attr))
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001200 || (err = device_create_file(dev,
Jean Delvare87808be2006-09-24 21:17:13 +02001201 &sensor_dev_attr_fan3_min.dev_attr))
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001202 || (err = device_create_file(dev,
Jean Delvare0124dd72007-11-25 16:16:41 +01001203 &sensor_dev_attr_fan3_div.dev_attr))
1204 || (err = device_create_file(dev,
1205 &sensor_dev_attr_fan3_alarm.dev_attr)))
Jean Delvare87808be2006-09-24 21:17:13 +02001206 goto ERROR4;
Jean Delvare9060f8b2006-08-28 14:24:17 +02001207 }
Jean Delvare17d648b2006-08-28 14:23:46 +02001208 }
1209
Linus Torvalds1da177e2005-04-16 15:20:36 -07001210 if (enable_pwm_interface) {
Jean Delvare98dd22c2008-10-09 15:33:58 +02001211 if (!(sio_data->skip_pwm & (1 << 0))) {
1212 if ((err = device_create_file(dev,
1213 &sensor_dev_attr_pwm1_enable.dev_attr))
1214 || (err = device_create_file(dev,
1215 &sensor_dev_attr_pwm1.dev_attr))
1216 || (err = device_create_file(dev,
1217 &dev_attr_pwm1_freq)))
1218 goto ERROR4;
1219 }
1220 if (!(sio_data->skip_pwm & (1 << 1))) {
1221 if ((err = device_create_file(dev,
1222 &sensor_dev_attr_pwm2_enable.dev_attr))
1223 || (err = device_create_file(dev,
1224 &sensor_dev_attr_pwm2.dev_attr))
1225 || (err = device_create_file(dev,
1226 &dev_attr_pwm2_freq)))
1227 goto ERROR4;
1228 }
1229 if (!(sio_data->skip_pwm & (1 << 2))) {
1230 if ((err = device_create_file(dev,
1231 &sensor_dev_attr_pwm3_enable.dev_attr))
1232 || (err = device_create_file(dev,
1233 &sensor_dev_attr_pwm3.dev_attr))
1234 || (err = device_create_file(dev,
1235 &dev_attr_pwm3_freq)))
1236 goto ERROR4;
1237 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001238 }
1239
Jean Delvare87673dd2006-08-28 14:37:19 +02001240 if (data->type == it8712 || data->type == it8716
Jean-Marc Spaggiarib4da93e2009-01-07 16:37:32 +01001241 || data->type == it8718 || data->type == it8720) {
Jean Delvare303760b2005-07-31 21:52:01 +02001242 data->vrm = vid_which_vrm();
Jean Delvare87673dd2006-08-28 14:37:19 +02001243 /* VID reading from Super-I/O config space if available */
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001244 data->vid = sio_data->vid_value;
1245 if ((err = device_create_file(dev,
Jean Delvare87808be2006-09-24 21:17:13 +02001246 &dev_attr_vrm))
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001247 || (err = device_create_file(dev,
Jean Delvare87808be2006-09-24 21:17:13 +02001248 &dev_attr_cpu0_vid)))
1249 goto ERROR4;
1250 }
1251
Tony Jones1beeffe2007-08-20 13:46:20 -07001252 data->hwmon_dev = hwmon_device_register(dev);
1253 if (IS_ERR(data->hwmon_dev)) {
1254 err = PTR_ERR(data->hwmon_dev);
Jean Delvare87808be2006-09-24 21:17:13 +02001255 goto ERROR4;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001256 }
1257
1258 return 0;
1259
Jean Delvare87808be2006-09-24 21:17:13 +02001260ERROR4:
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001261 sysfs_remove_group(&dev->kobj, &it87_group);
1262 sysfs_remove_group(&dev->kobj, &it87_group_opt);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001263ERROR2:
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001264 platform_set_drvdata(pdev, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001265 kfree(data);
1266ERROR1:
Bjorn Helgaas87b4b662008-01-22 07:21:03 -05001267 release_region(res->start, IT87_EC_EXTENT);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001268ERROR0:
1269 return err;
1270}
1271
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001272static int __devexit it87_remove(struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001273{
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001274 struct it87_data *data = platform_get_drvdata(pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001275
Tony Jones1beeffe2007-08-20 13:46:20 -07001276 hwmon_device_unregister(data->hwmon_dev);
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001277 sysfs_remove_group(&pdev->dev.kobj, &it87_group);
1278 sysfs_remove_group(&pdev->dev.kobj, &it87_group_opt);
Mark M. Hoffman943b0832005-07-15 21:39:18 -04001279
Bjorn Helgaas87b4b662008-01-22 07:21:03 -05001280 release_region(data->addr, IT87_EC_EXTENT);
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001281 platform_set_drvdata(pdev, NULL);
Mark M. Hoffman943b0832005-07-15 21:39:18 -04001282 kfree(data);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001283
1284 return 0;
1285}
1286
Jean Delvare7f999aa2007-02-14 21:15:03 +01001287/* Must be called with data->update_lock held, except during initialization.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001288 We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
1289 would slow down the IT87 access and should not be necessary. */
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001290static int it87_read_value(struct it87_data *data, u8 reg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001291{
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001292 outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
1293 return inb_p(data->addr + IT87_DATA_REG_OFFSET);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001294}
1295
Jean Delvare7f999aa2007-02-14 21:15:03 +01001296/* Must be called with data->update_lock held, except during initialization.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001297 We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
1298 would slow down the IT87 access and should not be necessary. */
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001299static void it87_write_value(struct it87_data *data, u8 reg, u8 value)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001300{
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001301 outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
1302 outb_p(value, data->addr + IT87_DATA_REG_OFFSET);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001303}
1304
1305/* Return 1 if and only if the PWM interface is safe to use */
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001306static int __devinit it87_check_pwm(struct device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001307{
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001308 struct it87_data *data = dev_get_drvdata(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001309 /* Some BIOSes fail to correctly configure the IT87 fans. All fans off
1310 * and polarity set to active low is sign that this is the case so we
1311 * disable pwm control to protect the user. */
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001312 int tmp = it87_read_value(data, IT87_REG_FAN_CTL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001313 if ((tmp & 0x87) == 0) {
1314 if (fix_pwm_polarity) {
1315 /* The user asks us to attempt a chip reconfiguration.
1316 * This means switching to active high polarity and
1317 * inverting all fan speed values. */
1318 int i;
1319 u8 pwm[3];
1320
1321 for (i = 0; i < 3; i++)
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001322 pwm[i] = it87_read_value(data,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001323 IT87_REG_PWM(i));
1324
1325 /* If any fan is in automatic pwm mode, the polarity
1326 * might be correct, as suspicious as it seems, so we
1327 * better don't change anything (but still disable the
1328 * PWM interface). */
1329 if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) {
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001330 dev_info(dev, "Reconfiguring PWM to "
Linus Torvalds1da177e2005-04-16 15:20:36 -07001331 "active high polarity\n");
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001332 it87_write_value(data, IT87_REG_FAN_CTL,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001333 tmp | 0x87);
1334 for (i = 0; i < 3; i++)
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001335 it87_write_value(data,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001336 IT87_REG_PWM(i),
1337 0x7f & ~pwm[i]);
1338 return 1;
1339 }
1340
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001341 dev_info(dev, "PWM configuration is "
Linus Torvalds1da177e2005-04-16 15:20:36 -07001342 "too broken to be fixed\n");
1343 }
1344
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001345 dev_info(dev, "Detected broken BIOS "
Linus Torvalds1da177e2005-04-16 15:20:36 -07001346 "defaults, disabling PWM interface\n");
1347 return 0;
1348 } else if (fix_pwm_polarity) {
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001349 dev_info(dev, "PWM configuration looks "
Linus Torvalds1da177e2005-04-16 15:20:36 -07001350 "sane, won't touch\n");
1351 }
1352
1353 return 1;
1354}
1355
1356/* Called when we have found a new IT87. */
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001357static void __devinit it87_init_device(struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001358{
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001359 struct it87_data *data = platform_get_drvdata(pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001360 int tmp, i;
1361
1362 /* initialize to sane defaults:
1363 * - if the chip is in manual pwm mode, this will be overwritten with
1364 * the actual settings on the chip (so in this case, initialization
1365 * is not needed)
1366 * - if in automatic or on/off mode, we could switch to manual mode,
1367 * read the registers and set manual_pwm_ctl accordingly, but currently
1368 * this is not implemented, so we initialize to something sane */
1369 for (i = 0; i < 3; i++) {
1370 data->manual_pwm_ctl[i] = 0xff;
1371 }
1372
Jean Delvarec5df9b72006-08-28 14:37:54 +02001373 /* Some chips seem to have default value 0xff for all limit
1374 * registers. For low voltage limits it makes no sense and triggers
1375 * alarms, so change to 0 instead. For high temperature limits, it
1376 * means -1 degree C, which surprisingly doesn't trigger an alarm,
1377 * but is still confusing, so change to 127 degrees C. */
1378 for (i = 0; i < 8; i++) {
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001379 tmp = it87_read_value(data, IT87_REG_VIN_MIN(i));
Jean Delvarec5df9b72006-08-28 14:37:54 +02001380 if (tmp == 0xff)
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001381 it87_write_value(data, IT87_REG_VIN_MIN(i), 0);
Jean Delvarec5df9b72006-08-28 14:37:54 +02001382 }
1383 for (i = 0; i < 3; i++) {
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001384 tmp = it87_read_value(data, IT87_REG_TEMP_HIGH(i));
Jean Delvarec5df9b72006-08-28 14:37:54 +02001385 if (tmp == 0xff)
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001386 it87_write_value(data, IT87_REG_TEMP_HIGH(i), 127);
Jean Delvarec5df9b72006-08-28 14:37:54 +02001387 }
1388
Jean Delvare77fa49d2009-01-07 16:37:35 +01001389 /* Check if temperature channels are reset manually or by some reason */
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001390 tmp = it87_read_value(data, IT87_REG_TEMP_ENABLE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001391 if ((tmp & 0x3f) == 0) {
1392 /* Temp1,Temp3=thermistor; Temp2=thermal diode */
1393 tmp = (tmp & 0xc0) | 0x2a;
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001394 it87_write_value(data, IT87_REG_TEMP_ENABLE, tmp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001395 }
1396 data->sensor = tmp;
1397
1398 /* Check if voltage monitors are reset manually or by some reason */
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001399 tmp = it87_read_value(data, IT87_REG_VIN_ENABLE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001400 if ((tmp & 0xff) == 0) {
1401 /* Enable all voltage monitors */
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001402 it87_write_value(data, IT87_REG_VIN_ENABLE, 0xff);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001403 }
1404
1405 /* Check if tachometers are reset manually or by some reason */
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001406 data->fan_main_ctrl = it87_read_value(data, IT87_REG_FAN_MAIN_CTRL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001407 if ((data->fan_main_ctrl & 0x70) == 0) {
1408 /* Enable all fan tachometers */
1409 data->fan_main_ctrl |= 0x70;
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001410 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001411 }
Jean Delvare9060f8b2006-08-28 14:24:17 +02001412 data->has_fan = (data->fan_main_ctrl >> 4) & 0x07;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001413
Jean Delvare17d648b2006-08-28 14:23:46 +02001414 /* Set tachometers to 16-bit mode if needed */
Andrew Paprocki04751692008-08-06 22:41:06 +02001415 if (has_16bit_fans(data)) {
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001416 tmp = it87_read_value(data, IT87_REG_FAN_16BIT);
Jean Delvare9060f8b2006-08-28 14:24:17 +02001417 if (~tmp & 0x07 & data->has_fan) {
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001418 dev_dbg(&pdev->dev,
Jean Delvare17d648b2006-08-28 14:23:46 +02001419 "Setting fan1-3 to 16-bit mode\n");
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001420 it87_write_value(data, IT87_REG_FAN_16BIT,
Jean Delvare17d648b2006-08-28 14:23:46 +02001421 tmp | 0x07);
1422 }
Andrew Paprocki816d8c62008-08-06 22:41:06 +02001423 /* IT8705F only supports three fans. */
1424 if (data->type != it87) {
1425 if (tmp & (1 << 4))
1426 data->has_fan |= (1 << 3); /* fan4 enabled */
1427 if (tmp & (1 << 5))
1428 data->has_fan |= (1 << 4); /* fan5 enabled */
1429 }
Jean Delvare17d648b2006-08-28 14:23:46 +02001430 }
1431
Linus Torvalds1da177e2005-04-16 15:20:36 -07001432 /* Set current fan mode registers and the default settings for the
1433 * other mode registers */
1434 for (i = 0; i < 3; i++) {
1435 if (data->fan_main_ctrl & (1 << i)) {
1436 /* pwm mode */
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001437 tmp = it87_read_value(data, IT87_REG_PWM(i));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001438 if (tmp & 0x80) {
1439 /* automatic pwm - not yet implemented, but
1440 * leave the settings made by the BIOS alone
1441 * until a change is requested via the sysfs
1442 * interface */
1443 } else {
1444 /* manual pwm */
1445 data->manual_pwm_ctl[i] = PWM_FROM_REG(tmp);
1446 }
1447 }
1448 }
1449
1450 /* Start monitoring */
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001451 it87_write_value(data, IT87_REG_CONFIG,
1452 (it87_read_value(data, IT87_REG_CONFIG) & 0x36)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001453 | (update_vbat ? 0x41 : 0x01));
1454}
1455
1456static struct it87_data *it87_update_device(struct device *dev)
1457{
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001458 struct it87_data *data = dev_get_drvdata(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001459 int i;
1460
Ingo Molnar9a61bf62006-01-18 23:19:26 +01001461 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001462
1463 if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
1464 || !data->valid) {
1465
1466 if (update_vbat) {
1467 /* Cleared after each update, so reenable. Value
1468 returned by this read will be previous value */
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001469 it87_write_value(data, IT87_REG_CONFIG,
1470 it87_read_value(data, IT87_REG_CONFIG) | 0x40);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001471 }
1472 for (i = 0; i <= 7; i++) {
1473 data->in[i] =
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001474 it87_read_value(data, IT87_REG_VIN(i));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001475 data->in_min[i] =
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001476 it87_read_value(data, IT87_REG_VIN_MIN(i));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001477 data->in_max[i] =
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001478 it87_read_value(data, IT87_REG_VIN_MAX(i));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001479 }
Jean Delvare3543a532006-08-28 14:27:25 +02001480 /* in8 (battery) has no limit registers */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001481 data->in[8] =
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001482 it87_read_value(data, IT87_REG_VIN(8));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001483
Jean Delvarec7f1f712007-09-03 17:11:46 +02001484 for (i = 0; i < 5; i++) {
Jean Delvare9060f8b2006-08-28 14:24:17 +02001485 /* Skip disabled fans */
1486 if (!(data->has_fan & (1 << i)))
1487 continue;
1488
Linus Torvalds1da177e2005-04-16 15:20:36 -07001489 data->fan_min[i] =
Jean Delvarec7f1f712007-09-03 17:11:46 +02001490 it87_read_value(data, IT87_REG_FAN_MIN[i]);
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001491 data->fan[i] = it87_read_value(data,
Jean Delvarec7f1f712007-09-03 17:11:46 +02001492 IT87_REG_FAN[i]);
Jean Delvare17d648b2006-08-28 14:23:46 +02001493 /* Add high byte if in 16-bit mode */
Andrew Paprocki04751692008-08-06 22:41:06 +02001494 if (has_16bit_fans(data)) {
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001495 data->fan[i] |= it87_read_value(data,
Jean Delvarec7f1f712007-09-03 17:11:46 +02001496 IT87_REG_FANX[i]) << 8;
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001497 data->fan_min[i] |= it87_read_value(data,
Jean Delvarec7f1f712007-09-03 17:11:46 +02001498 IT87_REG_FANX_MIN[i]) << 8;
Jean Delvare17d648b2006-08-28 14:23:46 +02001499 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001500 }
1501 for (i = 0; i < 3; i++) {
1502 data->temp[i] =
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001503 it87_read_value(data, IT87_REG_TEMP(i));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001504 data->temp_high[i] =
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001505 it87_read_value(data, IT87_REG_TEMP_HIGH(i));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001506 data->temp_low[i] =
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001507 it87_read_value(data, IT87_REG_TEMP_LOW(i));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001508 }
1509
Jean Delvare17d648b2006-08-28 14:23:46 +02001510 /* Newer chips don't have clock dividers */
Andrew Paprocki04751692008-08-06 22:41:06 +02001511 if ((data->has_fan & 0x07) && !has_16bit_fans(data)) {
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001512 i = it87_read_value(data, IT87_REG_FAN_DIV);
Jean Delvare17d648b2006-08-28 14:23:46 +02001513 data->fan_div[0] = i & 0x07;
1514 data->fan_div[1] = (i >> 3) & 0x07;
1515 data->fan_div[2] = (i & 0x40) ? 3 : 1;
1516 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001517
1518 data->alarms =
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001519 it87_read_value(data, IT87_REG_ALARM1) |
1520 (it87_read_value(data, IT87_REG_ALARM2) << 8) |
1521 (it87_read_value(data, IT87_REG_ALARM3) << 16);
1522 data->fan_main_ctrl = it87_read_value(data,
1523 IT87_REG_FAN_MAIN_CTRL);
1524 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001525
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001526 data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE);
Andrew Paprocki04751692008-08-06 22:41:06 +02001527 /* The 8705 does not have VID capability.
Jean-Marc Spaggiarib4da93e2009-01-07 16:37:32 +01001528 The 8718 and the 8720 don't use IT87_REG_VID for the
1529 same purpose. */
Jean Delvare17d648b2006-08-28 14:23:46 +02001530 if (data->type == it8712 || data->type == it8716) {
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001531 data->vid = it87_read_value(data, IT87_REG_VID);
Jean Delvare17d648b2006-08-28 14:23:46 +02001532 /* The older IT8712F revisions had only 5 VID pins,
1533 but we assume it is always safe to read 6 bits. */
1534 data->vid &= 0x3f;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001535 }
1536 data->last_updated = jiffies;
1537 data->valid = 1;
1538 }
1539
Ingo Molnar9a61bf62006-01-18 23:19:26 +01001540 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001541
1542 return data;
1543}
1544
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001545static int __init it87_device_add(unsigned short address,
1546 const struct it87_sio_data *sio_data)
1547{
1548 struct resource res = {
Bjorn Helgaas87b4b662008-01-22 07:21:03 -05001549 .start = address + IT87_EC_OFFSET,
1550 .end = address + IT87_EC_OFFSET + IT87_EC_EXTENT - 1,
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001551 .name = DRVNAME,
1552 .flags = IORESOURCE_IO,
1553 };
1554 int err;
1555
Jean Delvareb9acb642009-01-07 16:37:35 +01001556 err = acpi_check_resource_conflict(&res);
1557 if (err)
1558 goto exit;
1559
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001560 pdev = platform_device_alloc(DRVNAME, address);
1561 if (!pdev) {
1562 err = -ENOMEM;
1563 printk(KERN_ERR DRVNAME ": Device allocation failed\n");
1564 goto exit;
1565 }
1566
1567 err = platform_device_add_resources(pdev, &res, 1);
1568 if (err) {
1569 printk(KERN_ERR DRVNAME ": Device resource addition failed "
1570 "(%d)\n", err);
1571 goto exit_device_put;
1572 }
1573
1574 err = platform_device_add_data(pdev, sio_data,
1575 sizeof(struct it87_sio_data));
1576 if (err) {
1577 printk(KERN_ERR DRVNAME ": Platform data allocation failed\n");
1578 goto exit_device_put;
1579 }
1580
1581 err = platform_device_add(pdev);
1582 if (err) {
1583 printk(KERN_ERR DRVNAME ": Device addition failed (%d)\n",
1584 err);
1585 goto exit_device_put;
1586 }
1587
1588 return 0;
1589
1590exit_device_put:
1591 platform_device_put(pdev);
1592exit:
1593 return err;
1594}
1595
Linus Torvalds1da177e2005-04-16 15:20:36 -07001596static int __init sm_it87_init(void)
1597{
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001598 int err;
1599 unsigned short isa_address=0;
1600 struct it87_sio_data sio_data;
Jean Delvarefde09502005-07-19 23:51:07 +02001601
Jean Delvare98dd22c2008-10-09 15:33:58 +02001602 memset(&sio_data, 0, sizeof(struct it87_sio_data));
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001603 err = it87_find(&isa_address, &sio_data);
1604 if (err)
1605 return err;
1606 err = platform_driver_register(&it87_driver);
1607 if (err)
1608 return err;
1609
1610 err = it87_device_add(isa_address, &sio_data);
1611 if (err){
1612 platform_driver_unregister(&it87_driver);
1613 return err;
1614 }
1615
1616 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001617}
1618
1619static void __exit sm_it87_exit(void)
1620{
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001621 platform_device_unregister(pdev);
1622 platform_driver_unregister(&it87_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001623}
1624
1625
Jean Delvaref1d8e332007-11-25 16:14:44 +01001626MODULE_AUTHOR("Chris Gauthron, "
Jean Delvareb19367c2006-08-28 14:39:26 +02001627 "Jean Delvare <khali@linux-fr.org>");
Jean-Marc Spaggiarib4da93e2009-01-07 16:37:32 +01001628MODULE_DESCRIPTION("IT8705F/8712F/8716F/8718F/8720F/8726F, SiS950 driver");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001629module_param(update_vbat, bool, 0);
1630MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value");
1631module_param(fix_pwm_polarity, bool, 0);
1632MODULE_PARM_DESC(fix_pwm_polarity, "Force PWM polarity to active high (DANGEROUS)");
1633MODULE_LICENSE("GPL");
1634
1635module_init(sm_it87_init);
1636module_exit(sm_it87_exit);