blob: 0ffe84d190bbfabae0b7343ba6f3d39c078eabee [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>
H Hartley Sweeten6055fae2009-09-15 17:18:13 +020053#include <linux/io.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070054
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) */
Jean Delvare895ff262009-12-09 20:35:47 +0100127#define IT87_SIO_GPIO3_REG 0x27
Jean Delvare591ec652009-12-09 20:35:48 +0100128#define IT87_SIO_GPIO5_REG 0x29
Jean Delvare87673dd2006-08-28 14:37:19 +0200129#define IT87_SIO_PINX2_REG 0x2c /* Pin selection */
130#define IT87_SIO_VID_REG 0xfc /* VID value */
131
Linus Torvalds1da177e2005-04-16 15:20:36 -0700132/* Update battery voltage after every reading if true */
133static int update_vbat;
134
135/* Not all BIOSes properly configure the PWM registers */
136static int fix_pwm_polarity;
137
Linus Torvalds1da177e2005-04-16 15:20:36 -0700138/* Many IT87 constants specified below */
139
140/* Length of ISA address segment */
141#define IT87_EXTENT 8
142
Bjorn Helgaas87b4b662008-01-22 07:21:03 -0500143/* Length of ISA address segment for Environmental Controller */
144#define IT87_EC_EXTENT 2
145
146/* Offset of EC registers from ISA base address */
147#define IT87_EC_OFFSET 5
148
149/* Where are the ISA address/data registers relative to the EC base address */
150#define IT87_ADDR_REG_OFFSET 0
151#define IT87_DATA_REG_OFFSET 1
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152
153/*----- The IT87 registers -----*/
154
155#define IT87_REG_CONFIG 0x00
156
157#define IT87_REG_ALARM1 0x01
158#define IT87_REG_ALARM2 0x02
159#define IT87_REG_ALARM3 0x03
160
Jean-Marc Spaggiarib4da93e2009-01-07 16:37:32 +0100161/* The IT8718F and IT8720F have the VID value in a different register, in
162 Super-I/O configuration space. */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700163#define IT87_REG_VID 0x0a
Andrew Paprocki04751692008-08-06 22:41:06 +0200164/* The IT8705F and IT8712F earlier than revision 0x08 use register 0x0b
165 for fan divisors. Later IT8712F revisions must use 16-bit tachometer
166 mode. */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167#define IT87_REG_FAN_DIV 0x0b
Jean Delvare17d648b2006-08-28 14:23:46 +0200168#define IT87_REG_FAN_16BIT 0x0c
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169
170/* Monitors: 9 voltage (0 to 7, battery), 3 temp (1 to 3), 3 fan (1 to 3) */
171
Jean Delvarec7f1f712007-09-03 17:11:46 +0200172static const u8 IT87_REG_FAN[] = { 0x0d, 0x0e, 0x0f, 0x80, 0x82 };
173static const u8 IT87_REG_FAN_MIN[] = { 0x10, 0x11, 0x12, 0x84, 0x86 };
174static const u8 IT87_REG_FANX[] = { 0x18, 0x19, 0x1a, 0x81, 0x83 };
175static const u8 IT87_REG_FANX_MIN[] = { 0x1b, 0x1c, 0x1d, 0x85, 0x87 };
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176#define IT87_REG_FAN_MAIN_CTRL 0x13
177#define IT87_REG_FAN_CTL 0x14
178#define IT87_REG_PWM(nr) (0x15 + (nr))
179
180#define IT87_REG_VIN(nr) (0x20 + (nr))
181#define IT87_REG_TEMP(nr) (0x29 + (nr))
182
183#define IT87_REG_VIN_MAX(nr) (0x30 + (nr) * 2)
184#define IT87_REG_VIN_MIN(nr) (0x31 + (nr) * 2)
185#define IT87_REG_TEMP_HIGH(nr) (0x40 + (nr) * 2)
186#define IT87_REG_TEMP_LOW(nr) (0x41 + (nr) * 2)
187
Linus Torvalds1da177e2005-04-16 15:20:36 -0700188#define IT87_REG_VIN_ENABLE 0x50
189#define IT87_REG_TEMP_ENABLE 0x51
190
191#define IT87_REG_CHIPID 0x58
192
193#define IN_TO_REG(val) (SENSORS_LIMIT((((val) + 8)/16),0,255))
194#define IN_FROM_REG(val) ((val) * 16)
195
196static inline u8 FAN_TO_REG(long rpm, int div)
197{
198 if (rpm == 0)
199 return 255;
200 rpm = SENSORS_LIMIT(rpm, 1, 1000000);
201 return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1,
202 254);
203}
204
Jean Delvare17d648b2006-08-28 14:23:46 +0200205static inline u16 FAN16_TO_REG(long rpm)
206{
207 if (rpm == 0)
208 return 0xffff;
209 return SENSORS_LIMIT((1350000 + rpm) / (rpm * 2), 1, 0xfffe);
210}
211
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212#define FAN_FROM_REG(val,div) ((val)==0?-1:(val)==255?0:1350000/((val)*(div)))
Jean Delvare17d648b2006-08-28 14:23:46 +0200213/* The divider is fixed to 2 in 16-bit mode */
214#define FAN16_FROM_REG(val) ((val)==0?-1:(val)==0xffff?0:1350000/((val)*2))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700215
216#define TEMP_TO_REG(val) (SENSORS_LIMIT(((val)<0?(((val)-500)/1000):\
217 ((val)+500)/1000),-128,127))
Jean Delvaree267d252009-03-12 13:36:39 +0100218#define TEMP_FROM_REG(val) ((val) * 1000)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700219
Linus Torvalds1da177e2005-04-16 15:20:36 -0700220#define PWM_TO_REG(val) ((val) >> 1)
221#define PWM_FROM_REG(val) (((val)&0x7f) << 1)
222
223static int DIV_TO_REG(int val)
224{
225 int answer = 0;
Jean Delvareb9e349f2006-08-28 14:26:22 +0200226 while (answer < 7 && (val >>= 1))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700227 answer++;
228 return answer;
229}
230#define DIV_FROM_REG(val) (1 << (val))
231
Jean Delvaref8d0c192007-02-14 21:15:02 +0100232static const unsigned int pwm_freq[8] = {
233 48000000 / 128,
234 24000000 / 128,
235 12000000 / 128,
236 8000000 / 128,
237 6000000 / 128,
238 3000000 / 128,
239 1500000 / 128,
240 750000 / 128,
241};
242
Linus Torvalds1da177e2005-04-16 15:20:36 -0700243
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200244struct it87_sio_data {
245 enum chips type;
246 /* Values read from Super-I/O config space */
Andrew Paprocki04751692008-08-06 22:41:06 +0200247 u8 revision;
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200248 u8 vid_value;
Jean Delvare591ec652009-12-09 20:35:48 +0100249 /* Features skipped based on config or DMI */
Jean Delvare895ff262009-12-09 20:35:47 +0100250 u8 skip_vid;
Jean Delvare591ec652009-12-09 20:35:48 +0100251 u8 skip_fan;
Jean Delvare98dd22c2008-10-09 15:33:58 +0200252 u8 skip_pwm;
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200253};
254
Jean Delvareed6bafb2007-02-14 21:15:03 +0100255/* For each registered chip, we need to keep some data in memory.
256 The structure is dynamically allocated. */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700257struct it87_data {
Tony Jones1beeffe2007-08-20 13:46:20 -0700258 struct device *hwmon_dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700259 enum chips type;
Andrew Paprocki04751692008-08-06 22:41:06 +0200260 u8 revision;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700261
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200262 unsigned short addr;
263 const char *name;
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100264 struct mutex update_lock;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700265 char valid; /* !=0 if following fields are valid */
266 unsigned long last_updated; /* In jiffies */
267
268 u8 in[9]; /* Register value */
Jean Delvare3543a532006-08-28 14:27:25 +0200269 u8 in_max[8]; /* Register value */
270 u8 in_min[8]; /* Register value */
Jean Delvare9060f8b2006-08-28 14:24:17 +0200271 u8 has_fan; /* Bitfield, fans enabled */
Jean Delvarec7f1f712007-09-03 17:11:46 +0200272 u16 fan[5]; /* Register values, possibly combined */
273 u16 fan_min[5]; /* Register values, possibly combined */
Jean Delvaree267d252009-03-12 13:36:39 +0100274 s8 temp[3]; /* Register value */
275 s8 temp_high[3]; /* Register value */
276 s8 temp_low[3]; /* Register value */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700277 u8 sensor; /* Register value */
278 u8 fan_div[3]; /* Register encoding, shifted right */
279 u8 vid; /* Register encoding, combined */
Jean Delvarea7be58a2005-12-18 16:40:14 +0100280 u8 vrm;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700281 u32 alarms; /* Register encoding, combined */
282 u8 fan_main_ctrl; /* Register value */
Jean Delvaref8d0c192007-02-14 21:15:02 +0100283 u8 fan_ctl; /* Register value */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700284 u8 manual_pwm_ctl[3]; /* manual PWM value set by user */
285};
286
Andrew Paprocki04751692008-08-06 22:41:06 +0200287static inline int has_16bit_fans(const struct it87_data *data)
288{
Andrew Paprocki816d8c62008-08-06 22:41:06 +0200289 /* IT8705F Datasheet 0.4.1, 3h == Version G.
Andrew Paprocki859b9ef2008-09-20 10:25:19 +0200290 IT8712F Datasheet 0.9.1, section 8.3.5 indicates 8h == Version J.
Andrew Paprocki816d8c62008-08-06 22:41:06 +0200291 These are the first revisions with 16bit tachometer support. */
292 return (data->type == it87 && data->revision >= 0x03)
Andrew Paprocki859b9ef2008-09-20 10:25:19 +0200293 || (data->type == it8712 && data->revision >= 0x08)
Andrew Paprocki04751692008-08-06 22:41:06 +0200294 || data->type == it8716
Jean-Marc Spaggiarib4da93e2009-01-07 16:37:32 +0100295 || data->type == it8718
296 || data->type == it8720;
Andrew Paprocki04751692008-08-06 22:41:06 +0200297}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700298
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200299static int it87_probe(struct platform_device *pdev);
Jean Delvared0546122007-07-22 12:09:48 +0200300static int __devexit it87_remove(struct platform_device *pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700301
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200302static int it87_read_value(struct it87_data *data, u8 reg);
303static void it87_write_value(struct it87_data *data, u8 reg, u8 value);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700304static struct it87_data *it87_update_device(struct device *dev);
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200305static int it87_check_pwm(struct device *dev);
306static void it87_init_device(struct platform_device *pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700307
308
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200309static struct platform_driver it87_driver = {
Laurent Riffardcdaf7932005-11-26 20:37:41 +0100310 .driver = {
Jean Delvare87218842006-09-03 22:36:14 +0200311 .owner = THIS_MODULE,
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200312 .name = DRVNAME,
Laurent Riffardcdaf7932005-11-26 20:37:41 +0100313 },
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200314 .probe = it87_probe,
315 .remove = __devexit_p(it87_remove),
Jean Delvarefde09502005-07-19 23:51:07 +0200316};
317
Jean Delvare20ad93d2005-06-05 11:53:25 +0200318static ssize_t show_in(struct device *dev, struct device_attribute *attr,
319 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700320{
Jean Delvare20ad93d2005-06-05 11:53:25 +0200321 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
322 int nr = sensor_attr->index;
323
Linus Torvalds1da177e2005-04-16 15:20:36 -0700324 struct it87_data *data = it87_update_device(dev);
325 return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr]));
326}
327
Jean Delvare20ad93d2005-06-05 11:53:25 +0200328static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
329 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700330{
Jean Delvare20ad93d2005-06-05 11:53:25 +0200331 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
332 int nr = sensor_attr->index;
333
Linus Torvalds1da177e2005-04-16 15:20:36 -0700334 struct it87_data *data = it87_update_device(dev);
335 return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr]));
336}
337
Jean Delvare20ad93d2005-06-05 11:53:25 +0200338static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
339 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340{
Jean Delvare20ad93d2005-06-05 11:53:25 +0200341 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
342 int nr = sensor_attr->index;
343
Linus Torvalds1da177e2005-04-16 15:20:36 -0700344 struct it87_data *data = it87_update_device(dev);
345 return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr]));
346}
347
Jean Delvare20ad93d2005-06-05 11:53:25 +0200348static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
349 const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700350{
Jean Delvare20ad93d2005-06-05 11:53:25 +0200351 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
352 int nr = sensor_attr->index;
353
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200354 struct it87_data *data = dev_get_drvdata(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700355 unsigned long val = simple_strtoul(buf, NULL, 10);
356
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100357 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700358 data->in_min[nr] = IN_TO_REG(val);
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200359 it87_write_value(data, IT87_REG_VIN_MIN(nr),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700360 data->in_min[nr]);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100361 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700362 return count;
363}
Jean Delvare20ad93d2005-06-05 11:53:25 +0200364static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
365 const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700366{
Jean Delvare20ad93d2005-06-05 11:53:25 +0200367 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
368 int nr = sensor_attr->index;
369
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200370 struct it87_data *data = dev_get_drvdata(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371 unsigned long val = simple_strtoul(buf, NULL, 10);
372
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100373 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700374 data->in_max[nr] = IN_TO_REG(val);
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200375 it87_write_value(data, IT87_REG_VIN_MAX(nr),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700376 data->in_max[nr]);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100377 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378 return count;
379}
380
381#define show_in_offset(offset) \
Jean Delvare20ad93d2005-06-05 11:53:25 +0200382static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
383 show_in, NULL, offset);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700384
385#define limit_in_offset(offset) \
Jean Delvare20ad93d2005-06-05 11:53:25 +0200386static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
387 show_in_min, set_in_min, offset); \
388static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
389 show_in_max, set_in_max, offset);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700390
391show_in_offset(0);
392limit_in_offset(0);
393show_in_offset(1);
394limit_in_offset(1);
395show_in_offset(2);
396limit_in_offset(2);
397show_in_offset(3);
398limit_in_offset(3);
399show_in_offset(4);
400limit_in_offset(4);
401show_in_offset(5);
402limit_in_offset(5);
403show_in_offset(6);
404limit_in_offset(6);
405show_in_offset(7);
406limit_in_offset(7);
407show_in_offset(8);
408
409/* 3 temperatures */
Jean Delvare20ad93d2005-06-05 11:53:25 +0200410static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
411 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700412{
Jean Delvare20ad93d2005-06-05 11:53:25 +0200413 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
414 int nr = sensor_attr->index;
415
Linus Torvalds1da177e2005-04-16 15:20:36 -0700416 struct it87_data *data = it87_update_device(dev);
417 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr]));
418}
Jean Delvare20ad93d2005-06-05 11:53:25 +0200419static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
420 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700421{
Jean Delvare20ad93d2005-06-05 11:53:25 +0200422 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
423 int nr = sensor_attr->index;
424
Linus Torvalds1da177e2005-04-16 15:20:36 -0700425 struct it87_data *data = it87_update_device(dev);
426 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[nr]));
427}
Jean Delvare20ad93d2005-06-05 11:53:25 +0200428static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr,
429 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700430{
Jean Delvare20ad93d2005-06-05 11:53:25 +0200431 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
432 int nr = sensor_attr->index;
433
Linus Torvalds1da177e2005-04-16 15:20:36 -0700434 struct it87_data *data = it87_update_device(dev);
435 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_low[nr]));
436}
Jean Delvare20ad93d2005-06-05 11:53:25 +0200437static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
438 const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700439{
Jean Delvare20ad93d2005-06-05 11:53:25 +0200440 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
441 int nr = sensor_attr->index;
442
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200443 struct it87_data *data = dev_get_drvdata(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700444 int val = simple_strtol(buf, NULL, 10);
445
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100446 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700447 data->temp_high[nr] = TEMP_TO_REG(val);
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200448 it87_write_value(data, IT87_REG_TEMP_HIGH(nr), data->temp_high[nr]);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100449 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700450 return count;
451}
Jean Delvare20ad93d2005-06-05 11:53:25 +0200452static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
453 const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700454{
Jean Delvare20ad93d2005-06-05 11:53:25 +0200455 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
456 int nr = sensor_attr->index;
457
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200458 struct it87_data *data = dev_get_drvdata(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700459 int val = simple_strtol(buf, NULL, 10);
460
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100461 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700462 data->temp_low[nr] = TEMP_TO_REG(val);
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200463 it87_write_value(data, IT87_REG_TEMP_LOW(nr), data->temp_low[nr]);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100464 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700465 return count;
466}
467#define show_temp_offset(offset) \
Jean Delvare20ad93d2005-06-05 11:53:25 +0200468static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
469 show_temp, NULL, offset - 1); \
470static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
471 show_temp_max, set_temp_max, offset - 1); \
472static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
473 show_temp_min, set_temp_min, offset - 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700474
475show_temp_offset(1);
476show_temp_offset(2);
477show_temp_offset(3);
478
Jean Delvare20ad93d2005-06-05 11:53:25 +0200479static ssize_t show_sensor(struct device *dev, struct device_attribute *attr,
480 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700481{
Jean Delvare20ad93d2005-06-05 11:53:25 +0200482 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
483 int nr = sensor_attr->index;
484
Linus Torvalds1da177e2005-04-16 15:20:36 -0700485 struct it87_data *data = it87_update_device(dev);
486 u8 reg = data->sensor; /* In case the value is updated while we use it */
487
488 if (reg & (1 << nr))
489 return sprintf(buf, "3\n"); /* thermal diode */
490 if (reg & (8 << nr))
Jean Delvare4ed10772008-10-17 17:51:16 +0200491 return sprintf(buf, "4\n"); /* thermistor */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700492 return sprintf(buf, "0\n"); /* disabled */
493}
Jean Delvare20ad93d2005-06-05 11:53:25 +0200494static ssize_t set_sensor(struct device *dev, struct device_attribute *attr,
495 const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700496{
Jean Delvare20ad93d2005-06-05 11:53:25 +0200497 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
498 int nr = sensor_attr->index;
499
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200500 struct it87_data *data = dev_get_drvdata(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501 int val = simple_strtol(buf, NULL, 10);
502
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100503 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700504
505 data->sensor &= ~(1 << nr);
506 data->sensor &= ~(8 << nr);
Jean Delvare4ed10772008-10-17 17:51:16 +0200507 if (val == 2) { /* backwards compatibility */
508 dev_warn(dev, "Sensor type 2 is deprecated, please use 4 "
509 "instead\n");
510 val = 4;
511 }
512 /* 3 = thermal diode; 4 = thermistor; 0 = disabled */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700513 if (val == 3)
514 data->sensor |= 1 << nr;
Jean Delvare4ed10772008-10-17 17:51:16 +0200515 else if (val == 4)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700516 data->sensor |= 8 << nr;
517 else if (val != 0) {
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100518 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700519 return -EINVAL;
520 }
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200521 it87_write_value(data, IT87_REG_TEMP_ENABLE, data->sensor);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100522 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700523 return count;
524}
525#define show_sensor_offset(offset) \
Jean Delvare20ad93d2005-06-05 11:53:25 +0200526static SENSOR_DEVICE_ATTR(temp##offset##_type, S_IRUGO | S_IWUSR, \
527 show_sensor, set_sensor, offset - 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700528
529show_sensor_offset(1);
530show_sensor_offset(2);
531show_sensor_offset(3);
532
533/* 3 Fans */
Jean Delvare20ad93d2005-06-05 11:53:25 +0200534static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
535 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700536{
Jean Delvare20ad93d2005-06-05 11:53:25 +0200537 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
538 int nr = sensor_attr->index;
539
Linus Torvalds1da177e2005-04-16 15:20:36 -0700540 struct it87_data *data = it87_update_device(dev);
541 return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan[nr],
542 DIV_FROM_REG(data->fan_div[nr])));
543}
Jean Delvare20ad93d2005-06-05 11:53:25 +0200544static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr,
545 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700546{
Jean Delvare20ad93d2005-06-05 11:53:25 +0200547 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
548 int nr = sensor_attr->index;
549
Linus Torvalds1da177e2005-04-16 15:20:36 -0700550 struct it87_data *data = it87_update_device(dev);
551 return sprintf(buf,"%d\n",
552 FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr])));
553}
Jean Delvare20ad93d2005-06-05 11:53:25 +0200554static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
555 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700556{
Jean Delvare20ad93d2005-06-05 11:53:25 +0200557 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
558 int nr = sensor_attr->index;
559
Linus Torvalds1da177e2005-04-16 15:20:36 -0700560 struct it87_data *data = it87_update_device(dev);
561 return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]));
562}
Jean Delvare20ad93d2005-06-05 11:53:25 +0200563static ssize_t show_pwm_enable(struct device *dev, struct device_attribute *attr,
564 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700565{
Jean Delvare20ad93d2005-06-05 11:53:25 +0200566 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
567 int nr = sensor_attr->index;
568
Linus Torvalds1da177e2005-04-16 15:20:36 -0700569 struct it87_data *data = it87_update_device(dev);
570 return sprintf(buf,"%d\n", (data->fan_main_ctrl & (1 << nr)) ? 1 : 0);
571}
Jean Delvare20ad93d2005-06-05 11:53:25 +0200572static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
573 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700574{
Jean Delvare20ad93d2005-06-05 11:53:25 +0200575 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
576 int nr = sensor_attr->index;
577
Linus Torvalds1da177e2005-04-16 15:20:36 -0700578 struct it87_data *data = it87_update_device(dev);
579 return sprintf(buf,"%d\n", data->manual_pwm_ctl[nr]);
580}
Jean Delvaref8d0c192007-02-14 21:15:02 +0100581static ssize_t show_pwm_freq(struct device *dev, struct device_attribute *attr,
582 char *buf)
583{
584 struct it87_data *data = it87_update_device(dev);
585 int index = (data->fan_ctl >> 4) & 0x07;
586
587 return sprintf(buf, "%u\n", pwm_freq[index]);
588}
Jean Delvare20ad93d2005-06-05 11:53:25 +0200589static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
590 const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700591{
Jean Delvare20ad93d2005-06-05 11:53:25 +0200592 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
593 int nr = sensor_attr->index;
594
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200595 struct it87_data *data = dev_get_drvdata(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700596 int val = simple_strtol(buf, NULL, 10);
Jean Delvare7f999aa2007-02-14 21:15:03 +0100597 u8 reg;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700598
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100599 mutex_lock(&data->update_lock);
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200600 reg = it87_read_value(data, IT87_REG_FAN_DIV);
Jean Delvare07eab462005-11-23 15:44:31 -0800601 switch (nr) {
602 case 0: data->fan_div[nr] = reg & 0x07; break;
603 case 1: data->fan_div[nr] = (reg >> 3) & 0x07; break;
604 case 2: data->fan_div[nr] = (reg & 0x40) ? 3 : 1; break;
605 }
606
Linus Torvalds1da177e2005-04-16 15:20:36 -0700607 data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
Jean Delvarec7f1f712007-09-03 17:11:46 +0200608 it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan_min[nr]);
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100609 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700610 return count;
611}
Jean Delvare20ad93d2005-06-05 11:53:25 +0200612static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
613 const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700614{
Jean Delvare20ad93d2005-06-05 11:53:25 +0200615 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
616 int nr = sensor_attr->index;
617
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200618 struct it87_data *data = dev_get_drvdata(dev);
Jean Delvareb9e349f2006-08-28 14:26:22 +0200619 unsigned long val = simple_strtoul(buf, NULL, 10);
Jean Delvare8ab4ec32006-08-28 14:35:46 +0200620 int min;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700621 u8 old;
622
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100623 mutex_lock(&data->update_lock);
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200624 old = it87_read_value(data, IT87_REG_FAN_DIV);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700625
Jean Delvare8ab4ec32006-08-28 14:35:46 +0200626 /* Save fan min limit */
627 min = FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr]));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700628
629 switch (nr) {
630 case 0:
631 case 1:
632 data->fan_div[nr] = DIV_TO_REG(val);
633 break;
634 case 2:
635 if (val < 8)
636 data->fan_div[nr] = 1;
637 else
638 data->fan_div[nr] = 3;
639 }
640 val = old & 0x80;
641 val |= (data->fan_div[0] & 0x07);
642 val |= (data->fan_div[1] & 0x07) << 3;
643 if (data->fan_div[2] == 3)
644 val |= 0x1 << 6;
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200645 it87_write_value(data, IT87_REG_FAN_DIV, val);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700646
Jean Delvare8ab4ec32006-08-28 14:35:46 +0200647 /* Restore fan min limit */
648 data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
Jean Delvarec7f1f712007-09-03 17:11:46 +0200649 it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan_min[nr]);
Jean Delvare8ab4ec32006-08-28 14:35:46 +0200650
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100651 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700652 return count;
653}
Jean Delvare20ad93d2005-06-05 11:53:25 +0200654static ssize_t set_pwm_enable(struct device *dev,
655 struct device_attribute *attr, const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700656{
Jean Delvare20ad93d2005-06-05 11:53:25 +0200657 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
658 int nr = sensor_attr->index;
659
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200660 struct it87_data *data = dev_get_drvdata(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700661 int val = simple_strtol(buf, NULL, 10);
662
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100663 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700664
665 if (val == 0) {
666 int tmp;
667 /* make sure the fan is on when in on/off mode */
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200668 tmp = it87_read_value(data, IT87_REG_FAN_CTL);
669 it87_write_value(data, IT87_REG_FAN_CTL, tmp | (1 << nr));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700670 /* set on/off 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 } else if (val == 1) {
674 /* set SmartGuardian mode */
675 data->fan_main_ctrl |= (1 << nr);
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200676 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700677 /* set saved pwm value, clear FAN_CTLX PWM mode bit */
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200678 it87_write_value(data, IT87_REG_PWM(nr), PWM_TO_REG(data->manual_pwm_ctl[nr]));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700679 } else {
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100680 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700681 return -EINVAL;
682 }
683
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100684 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700685 return count;
686}
Jean Delvare20ad93d2005-06-05 11:53:25 +0200687static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
688 const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700689{
Jean Delvare20ad93d2005-06-05 11:53:25 +0200690 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
691 int nr = sensor_attr->index;
692
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200693 struct it87_data *data = dev_get_drvdata(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700694 int val = simple_strtol(buf, NULL, 10);
695
696 if (val < 0 || val > 255)
697 return -EINVAL;
698
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100699 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700700 data->manual_pwm_ctl[nr] = val;
701 if (data->fan_main_ctrl & (1 << nr))
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200702 it87_write_value(data, IT87_REG_PWM(nr), PWM_TO_REG(data->manual_pwm_ctl[nr]));
Ingo Molnar9a61bf62006-01-18 23:19:26 +0100703 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700704 return count;
705}
Jean Delvaref8d0c192007-02-14 21:15:02 +0100706static ssize_t set_pwm_freq(struct device *dev,
707 struct device_attribute *attr, const char *buf, size_t count)
708{
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200709 struct it87_data *data = dev_get_drvdata(dev);
Jean Delvaref8d0c192007-02-14 21:15:02 +0100710 unsigned long val = simple_strtoul(buf, NULL, 10);
711 int i;
712
713 /* Search for the nearest available frequency */
714 for (i = 0; i < 7; i++) {
715 if (val > (pwm_freq[i] + pwm_freq[i+1]) / 2)
716 break;
717 }
718
719 mutex_lock(&data->update_lock);
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200720 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL) & 0x8f;
Jean Delvaref8d0c192007-02-14 21:15:02 +0100721 data->fan_ctl |= i << 4;
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200722 it87_write_value(data, IT87_REG_FAN_CTL, data->fan_ctl);
Jean Delvaref8d0c192007-02-14 21:15:02 +0100723 mutex_unlock(&data->update_lock);
724
725 return count;
726}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700727
Jean Delvare20ad93d2005-06-05 11:53:25 +0200728#define show_fan_offset(offset) \
729static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
730 show_fan, NULL, offset - 1); \
731static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
732 show_fan_min, set_fan_min, offset - 1); \
733static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \
734 show_fan_div, set_fan_div, offset - 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700735
736show_fan_offset(1);
737show_fan_offset(2);
738show_fan_offset(3);
739
740#define show_pwm_offset(offset) \
Jean Delvare20ad93d2005-06-05 11:53:25 +0200741static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \
742 show_pwm_enable, set_pwm_enable, offset - 1); \
743static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
Jean Delvaref8d0c192007-02-14 21:15:02 +0100744 show_pwm, set_pwm, offset - 1); \
745static DEVICE_ATTR(pwm##offset##_freq, \
746 (offset == 1 ? S_IRUGO | S_IWUSR : S_IRUGO), \
747 show_pwm_freq, (offset == 1 ? set_pwm_freq : NULL));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700748
749show_pwm_offset(1);
750show_pwm_offset(2);
751show_pwm_offset(3);
752
Jean Delvare17d648b2006-08-28 14:23:46 +0200753/* A different set of callbacks for 16-bit fans */
754static ssize_t show_fan16(struct device *dev, struct device_attribute *attr,
755 char *buf)
756{
757 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
758 int nr = sensor_attr->index;
759 struct it87_data *data = it87_update_device(dev);
760 return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan[nr]));
761}
762
763static ssize_t show_fan16_min(struct device *dev, struct device_attribute *attr,
764 char *buf)
765{
766 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
767 int nr = sensor_attr->index;
768 struct it87_data *data = it87_update_device(dev);
769 return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan_min[nr]));
770}
771
772static ssize_t set_fan16_min(struct device *dev, struct device_attribute *attr,
773 const char *buf, size_t count)
774{
775 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
776 int nr = sensor_attr->index;
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200777 struct it87_data *data = dev_get_drvdata(dev);
Jean Delvare17d648b2006-08-28 14:23:46 +0200778 int val = simple_strtol(buf, NULL, 10);
779
780 mutex_lock(&data->update_lock);
781 data->fan_min[nr] = FAN16_TO_REG(val);
Jean Delvarec7f1f712007-09-03 17:11:46 +0200782 it87_write_value(data, IT87_REG_FAN_MIN[nr],
Jean Delvare17d648b2006-08-28 14:23:46 +0200783 data->fan_min[nr] & 0xff);
Jean Delvarec7f1f712007-09-03 17:11:46 +0200784 it87_write_value(data, IT87_REG_FANX_MIN[nr],
Jean Delvare17d648b2006-08-28 14:23:46 +0200785 data->fan_min[nr] >> 8);
786 mutex_unlock(&data->update_lock);
787 return count;
788}
789
790/* We want to use the same sysfs file names as 8-bit fans, but we need
791 different variable names, so we have to use SENSOR_ATTR instead of
792 SENSOR_DEVICE_ATTR. */
793#define show_fan16_offset(offset) \
794static struct sensor_device_attribute sensor_dev_attr_fan##offset##_input16 \
795 = SENSOR_ATTR(fan##offset##_input, S_IRUGO, \
796 show_fan16, NULL, offset - 1); \
797static struct sensor_device_attribute sensor_dev_attr_fan##offset##_min16 \
798 = SENSOR_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
799 show_fan16_min, set_fan16_min, offset - 1)
800
801show_fan16_offset(1);
802show_fan16_offset(2);
803show_fan16_offset(3);
Jean Delvarec7f1f712007-09-03 17:11:46 +0200804show_fan16_offset(4);
805show_fan16_offset(5);
Jean Delvare17d648b2006-08-28 14:23:46 +0200806
Linus Torvalds1da177e2005-04-16 15:20:36 -0700807/* Alarms */
Yani Ioannou30f74292005-05-17 06:41:35 -0400808static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700809{
810 struct it87_data *data = it87_update_device(dev);
Jean Delvare68188ba2005-05-16 18:52:38 +0200811 return sprintf(buf, "%u\n", data->alarms);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700812}
Jean Delvare1d66c642005-04-18 21:16:59 -0700813static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700814
Jean Delvare0124dd72007-11-25 16:16:41 +0100815static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
816 char *buf)
817{
818 int bitnr = to_sensor_dev_attr(attr)->index;
819 struct it87_data *data = it87_update_device(dev);
820 return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
821}
822static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8);
823static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9);
824static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10);
825static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 11);
826static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 12);
827static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 13);
828static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 14);
829static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 15);
830static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 0);
831static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 1);
832static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 2);
833static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 3);
834static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 6);
835static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 16);
836static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 17);
837static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 18);
838
Linus Torvalds1da177e2005-04-16 15:20:36 -0700839static ssize_t
Yani Ioannou30f74292005-05-17 06:41:35 -0400840show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700841{
Jean Delvare90d66192007-10-08 18:24:35 +0200842 struct it87_data *data = dev_get_drvdata(dev);
Jean Delvarea7be58a2005-12-18 16:40:14 +0100843 return sprintf(buf, "%u\n", data->vrm);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700844}
845static ssize_t
Yani Ioannou30f74292005-05-17 06:41:35 -0400846store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700847{
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200848 struct it87_data *data = dev_get_drvdata(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700849 u32 val;
850
851 val = simple_strtoul(buf, NULL, 10);
852 data->vrm = val;
853
854 return count;
855}
856static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700857
858static ssize_t
Yani Ioannou30f74292005-05-17 06:41:35 -0400859show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700860{
861 struct it87_data *data = it87_update_device(dev);
862 return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm));
863}
864static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
Jean Delvare87808be2006-09-24 21:17:13 +0200865
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200866static ssize_t show_name(struct device *dev, struct device_attribute
867 *devattr, char *buf)
868{
869 struct it87_data *data = dev_get_drvdata(dev);
870 return sprintf(buf, "%s\n", data->name);
871}
872static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
873
Jean Delvare87808be2006-09-24 21:17:13 +0200874static struct attribute *it87_attributes[] = {
875 &sensor_dev_attr_in0_input.dev_attr.attr,
876 &sensor_dev_attr_in1_input.dev_attr.attr,
877 &sensor_dev_attr_in2_input.dev_attr.attr,
878 &sensor_dev_attr_in3_input.dev_attr.attr,
879 &sensor_dev_attr_in4_input.dev_attr.attr,
880 &sensor_dev_attr_in5_input.dev_attr.attr,
881 &sensor_dev_attr_in6_input.dev_attr.attr,
882 &sensor_dev_attr_in7_input.dev_attr.attr,
883 &sensor_dev_attr_in8_input.dev_attr.attr,
884 &sensor_dev_attr_in0_min.dev_attr.attr,
885 &sensor_dev_attr_in1_min.dev_attr.attr,
886 &sensor_dev_attr_in2_min.dev_attr.attr,
887 &sensor_dev_attr_in3_min.dev_attr.attr,
888 &sensor_dev_attr_in4_min.dev_attr.attr,
889 &sensor_dev_attr_in5_min.dev_attr.attr,
890 &sensor_dev_attr_in6_min.dev_attr.attr,
891 &sensor_dev_attr_in7_min.dev_attr.attr,
892 &sensor_dev_attr_in0_max.dev_attr.attr,
893 &sensor_dev_attr_in1_max.dev_attr.attr,
894 &sensor_dev_attr_in2_max.dev_attr.attr,
895 &sensor_dev_attr_in3_max.dev_attr.attr,
896 &sensor_dev_attr_in4_max.dev_attr.attr,
897 &sensor_dev_attr_in5_max.dev_attr.attr,
898 &sensor_dev_attr_in6_max.dev_attr.attr,
899 &sensor_dev_attr_in7_max.dev_attr.attr,
Jean Delvare0124dd72007-11-25 16:16:41 +0100900 &sensor_dev_attr_in0_alarm.dev_attr.attr,
901 &sensor_dev_attr_in1_alarm.dev_attr.attr,
902 &sensor_dev_attr_in2_alarm.dev_attr.attr,
903 &sensor_dev_attr_in3_alarm.dev_attr.attr,
904 &sensor_dev_attr_in4_alarm.dev_attr.attr,
905 &sensor_dev_attr_in5_alarm.dev_attr.attr,
906 &sensor_dev_attr_in6_alarm.dev_attr.attr,
907 &sensor_dev_attr_in7_alarm.dev_attr.attr,
Jean Delvare87808be2006-09-24 21:17:13 +0200908
909 &sensor_dev_attr_temp1_input.dev_attr.attr,
910 &sensor_dev_attr_temp2_input.dev_attr.attr,
911 &sensor_dev_attr_temp3_input.dev_attr.attr,
912 &sensor_dev_attr_temp1_max.dev_attr.attr,
913 &sensor_dev_attr_temp2_max.dev_attr.attr,
914 &sensor_dev_attr_temp3_max.dev_attr.attr,
915 &sensor_dev_attr_temp1_min.dev_attr.attr,
916 &sensor_dev_attr_temp2_min.dev_attr.attr,
917 &sensor_dev_attr_temp3_min.dev_attr.attr,
918 &sensor_dev_attr_temp1_type.dev_attr.attr,
919 &sensor_dev_attr_temp2_type.dev_attr.attr,
920 &sensor_dev_attr_temp3_type.dev_attr.attr,
Jean Delvare0124dd72007-11-25 16:16:41 +0100921 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
922 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
923 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
Jean Delvare87808be2006-09-24 21:17:13 +0200924
925 &dev_attr_alarms.attr,
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200926 &dev_attr_name.attr,
Jean Delvare87808be2006-09-24 21:17:13 +0200927 NULL
928};
929
930static const struct attribute_group it87_group = {
931 .attrs = it87_attributes,
932};
933
934static struct attribute *it87_attributes_opt[] = {
935 &sensor_dev_attr_fan1_input16.dev_attr.attr,
936 &sensor_dev_attr_fan1_min16.dev_attr.attr,
937 &sensor_dev_attr_fan2_input16.dev_attr.attr,
938 &sensor_dev_attr_fan2_min16.dev_attr.attr,
939 &sensor_dev_attr_fan3_input16.dev_attr.attr,
940 &sensor_dev_attr_fan3_min16.dev_attr.attr,
Jean Delvarec7f1f712007-09-03 17:11:46 +0200941 &sensor_dev_attr_fan4_input16.dev_attr.attr,
942 &sensor_dev_attr_fan4_min16.dev_attr.attr,
943 &sensor_dev_attr_fan5_input16.dev_attr.attr,
944 &sensor_dev_attr_fan5_min16.dev_attr.attr,
Jean Delvare87808be2006-09-24 21:17:13 +0200945
946 &sensor_dev_attr_fan1_input.dev_attr.attr,
947 &sensor_dev_attr_fan1_min.dev_attr.attr,
948 &sensor_dev_attr_fan1_div.dev_attr.attr,
949 &sensor_dev_attr_fan2_input.dev_attr.attr,
950 &sensor_dev_attr_fan2_min.dev_attr.attr,
951 &sensor_dev_attr_fan2_div.dev_attr.attr,
952 &sensor_dev_attr_fan3_input.dev_attr.attr,
953 &sensor_dev_attr_fan3_min.dev_attr.attr,
954 &sensor_dev_attr_fan3_div.dev_attr.attr,
955
Jean Delvare0124dd72007-11-25 16:16:41 +0100956 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
957 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
958 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
959 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
960 &sensor_dev_attr_fan5_alarm.dev_attr.attr,
961
Jean Delvare87808be2006-09-24 21:17:13 +0200962 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
963 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
964 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
965 &sensor_dev_attr_pwm1.dev_attr.attr,
966 &sensor_dev_attr_pwm2.dev_attr.attr,
967 &sensor_dev_attr_pwm3.dev_attr.attr,
Jean Delvared5b0b5d2007-12-14 14:41:53 +0100968 &dev_attr_pwm1_freq.attr,
969 &dev_attr_pwm2_freq.attr,
970 &dev_attr_pwm3_freq.attr,
Jean Delvare87808be2006-09-24 21:17:13 +0200971
972 &dev_attr_vrm.attr,
973 &dev_attr_cpu0_vid.attr,
974 NULL
975};
976
977static const struct attribute_group it87_group_opt = {
978 .attrs = it87_attributes_opt,
979};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700980
Jean Delvare2d8672c2005-07-19 23:56:35 +0200981/* SuperIO detection - will change isa_address if a chip is found */
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200982static int __init it87_find(unsigned short *address,
983 struct it87_sio_data *sio_data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700984{
985 int err = -ENODEV;
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200986 u16 chip_type;
Jean Delvare98dd22c2008-10-09 15:33:58 +0200987 const char *board_vendor, *board_name;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700988
989 superio_enter();
Jean Delvare67b671b2007-12-06 23:13:42 +0100990 chip_type = force_id ? force_id : superio_inw(DEVID);
corentin.labbeb74f3fd2007-06-13 20:27:36 +0200991
992 switch (chip_type) {
993 case IT8705F_DEVID:
994 sio_data->type = it87;
995 break;
996 case IT8712F_DEVID:
997 sio_data->type = it8712;
998 break;
999 case IT8716F_DEVID:
1000 case IT8726F_DEVID:
1001 sio_data->type = it8716;
1002 break;
1003 case IT8718F_DEVID:
1004 sio_data->type = it8718;
1005 break;
Jean-Marc Spaggiarib4da93e2009-01-07 16:37:32 +01001006 case IT8720F_DEVID:
1007 sio_data->type = it8720;
1008 break;
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001009 case 0xffff: /* No device at all */
1010 goto exit;
1011 default:
1012 pr_debug(DRVNAME ": Unsupported chip (DEVID=0x%x)\n",
1013 chip_type);
1014 goto exit;
1015 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001016
Jean Delvare87673dd2006-08-28 14:37:19 +02001017 superio_select(PME);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001018 if (!(superio_inb(IT87_ACT_REG) & 0x01)) {
1019 pr_info("it87: Device not activated, skipping\n");
1020 goto exit;
1021 }
1022
1023 *address = superio_inw(IT87_BASE_REG) & ~(IT87_EXTENT - 1);
1024 if (*address == 0) {
1025 pr_info("it87: Base address not set, skipping\n");
1026 goto exit;
1027 }
1028
1029 err = 0;
Andrew Paprocki04751692008-08-06 22:41:06 +02001030 sio_data->revision = superio_inb(DEVREV) & 0x0f;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001031 pr_info("it87: Found IT%04xF chip at 0x%x, revision %d\n",
Andrew Paprocki04751692008-08-06 22:41:06 +02001032 chip_type, *address, sio_data->revision);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001033
Jean Delvare87673dd2006-08-28 14:37:19 +02001034 /* Read GPIO config and VID value from LDN 7 (GPIO) */
Jean Delvare895ff262009-12-09 20:35:47 +01001035 if (sio_data->type == it87) {
1036 /* The IT8705F doesn't have VID pins at all */
1037 sio_data->skip_vid = 1;
1038 } else {
Jean Delvare87673dd2006-08-28 14:37:19 +02001039 int reg;
1040
1041 superio_select(GPIO);
Jean Delvare895ff262009-12-09 20:35:47 +01001042 /* We need at least 4 VID pins */
1043 reg = superio_inb(IT87_SIO_GPIO3_REG);
1044 if (reg & 0x0f) {
1045 pr_info("it87: VID is disabled (pins used for GPIO)\n");
1046 sio_data->skip_vid = 1;
1047 }
1048
Jean Delvare591ec652009-12-09 20:35:48 +01001049 /* Check if fan3 is there or not */
1050 if (reg & (1 << 6))
1051 sio_data->skip_pwm |= (1 << 2);
1052 if (reg & (1 << 7))
1053 sio_data->skip_fan |= (1 << 2);
1054
1055 /* Check if fan2 is there or not */
1056 reg = superio_inb(IT87_SIO_GPIO5_REG);
1057 if (reg & (1 << 1))
1058 sio_data->skip_pwm |= (1 << 1);
1059 if (reg & (1 << 2))
1060 sio_data->skip_fan |= (1 << 1);
1061
Jean Delvare895ff262009-12-09 20:35:47 +01001062 if ((sio_data->type == it8718 || sio_data->type == it8720)
1063 && !(sio_data->skip_vid))
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001064 sio_data->vid_value = superio_inb(IT87_SIO_VID_REG);
Jean Delvare87673dd2006-08-28 14:37:19 +02001065
1066 reg = superio_inb(IT87_SIO_PINX2_REG);
1067 if (reg & (1 << 0))
1068 pr_info("it87: in3 is VCC (+5V)\n");
1069 if (reg & (1 << 1))
1070 pr_info("it87: in7 is VCCH (+5V Stand-By)\n");
1071 }
1072
Jean Delvare98dd22c2008-10-09 15:33:58 +02001073 /* Disable specific features based on DMI strings */
1074 board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR);
1075 board_name = dmi_get_system_info(DMI_BOARD_NAME);
1076 if (board_vendor && board_name) {
1077 if (strcmp(board_vendor, "nVIDIA") == 0
1078 && strcmp(board_name, "FN68PT") == 0) {
1079 /* On the Shuttle SN68PT, FAN_CTL2 is apparently not
1080 connected to a fan, but to something else. One user
1081 has reported instant system power-off when changing
1082 the PWM2 duty cycle, so we disable it.
1083 I use the board name string as the trigger in case
1084 the same board is ever used in other systems. */
1085 pr_info("it87: Disabling pwm2 due to "
1086 "hardware constraints\n");
1087 sio_data->skip_pwm = (1 << 1);
1088 }
1089 }
1090
Linus Torvalds1da177e2005-04-16 15:20:36 -07001091exit:
1092 superio_exit();
1093 return err;
1094}
1095
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001096static int __devinit it87_probe(struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001097{
Linus Torvalds1da177e2005-04-16 15:20:36 -07001098 struct it87_data *data;
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001099 struct resource *res;
1100 struct device *dev = &pdev->dev;
1101 struct it87_sio_data *sio_data = dev->platform_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001102 int err = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001103 int enable_pwm_interface;
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001104 static const char *names[] = {
1105 "it87",
1106 "it8712",
1107 "it8716",
1108 "it8718",
Jean-Marc Spaggiarib4da93e2009-01-07 16:37:32 +01001109 "it8720",
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001110 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07001111
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001112 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
Bjorn Helgaas87b4b662008-01-22 07:21:03 -05001113 if (!request_region(res->start, IT87_EC_EXTENT, DRVNAME)) {
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001114 dev_err(dev, "Failed to request region 0x%lx-0x%lx\n",
1115 (unsigned long)res->start,
Bjorn Helgaas87b4b662008-01-22 07:21:03 -05001116 (unsigned long)(res->start + IT87_EC_EXTENT - 1));
Jean Delvare8e9afcb2006-12-12 18:18:28 +01001117 err = -EBUSY;
1118 goto ERROR0;
1119 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001120
Deepak Saxenaba9c2e82005-10-17 23:08:32 +02001121 if (!(data = kzalloc(sizeof(struct it87_data), GFP_KERNEL))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001122 err = -ENOMEM;
1123 goto ERROR1;
1124 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001125
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001126 data->addr = res->start;
1127 data->type = sio_data->type;
Andrew Paprocki04751692008-08-06 22:41:06 +02001128 data->revision = sio_data->revision;
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001129 data->name = names[sio_data->type];
Linus Torvalds1da177e2005-04-16 15:20:36 -07001130
1131 /* Now, we do the remaining detection. */
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001132 if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80)
1133 || it87_read_value(data, IT87_REG_CHIPID) != 0x90) {
Jean Delvare8e9afcb2006-12-12 18:18:28 +01001134 err = -ENODEV;
1135 goto ERROR2;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001136 }
1137
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001138 platform_set_drvdata(pdev, data);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001139
Ingo Molnar9a61bf62006-01-18 23:19:26 +01001140 mutex_init(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001141
Linus Torvalds1da177e2005-04-16 15:20:36 -07001142 /* Check PWM configuration */
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001143 enable_pwm_interface = it87_check_pwm(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001144
1145 /* Initialize the IT87 chip */
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001146 it87_init_device(pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001147
1148 /* Register sysfs hooks */
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001149 if ((err = sysfs_create_group(&dev->kobj, &it87_group)))
1150 goto ERROR2;
Jean Delvare17d648b2006-08-28 14:23:46 +02001151
Jean Delvare9060f8b2006-08-28 14:24:17 +02001152 /* Do not create fan files for disabled fans */
Andrew Paprocki04751692008-08-06 22:41:06 +02001153 if (has_16bit_fans(data)) {
Jean Delvare87673dd2006-08-28 14:37:19 +02001154 /* 16-bit tachometers */
Jean Delvare9060f8b2006-08-28 14:24:17 +02001155 if (data->has_fan & (1 << 0)) {
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001156 if ((err = device_create_file(dev,
Jean Delvare87808be2006-09-24 21:17:13 +02001157 &sensor_dev_attr_fan1_input16.dev_attr))
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001158 || (err = device_create_file(dev,
Jean Delvare0124dd72007-11-25 16:16:41 +01001159 &sensor_dev_attr_fan1_min16.dev_attr))
1160 || (err = device_create_file(dev,
1161 &sensor_dev_attr_fan1_alarm.dev_attr)))
Jean Delvare87808be2006-09-24 21:17:13 +02001162 goto ERROR4;
Jean Delvare9060f8b2006-08-28 14:24:17 +02001163 }
1164 if (data->has_fan & (1 << 1)) {
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001165 if ((err = device_create_file(dev,
Jean Delvare87808be2006-09-24 21:17:13 +02001166 &sensor_dev_attr_fan2_input16.dev_attr))
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001167 || (err = device_create_file(dev,
Jean Delvare0124dd72007-11-25 16:16:41 +01001168 &sensor_dev_attr_fan2_min16.dev_attr))
1169 || (err = device_create_file(dev,
1170 &sensor_dev_attr_fan2_alarm.dev_attr)))
Jean Delvare87808be2006-09-24 21:17:13 +02001171 goto ERROR4;
Jean Delvare9060f8b2006-08-28 14:24:17 +02001172 }
1173 if (data->has_fan & (1 << 2)) {
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001174 if ((err = device_create_file(dev,
Jean Delvare87808be2006-09-24 21:17:13 +02001175 &sensor_dev_attr_fan3_input16.dev_attr))
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001176 || (err = device_create_file(dev,
Jean Delvare0124dd72007-11-25 16:16:41 +01001177 &sensor_dev_attr_fan3_min16.dev_attr))
1178 || (err = device_create_file(dev,
1179 &sensor_dev_attr_fan3_alarm.dev_attr)))
Jean Delvare87808be2006-09-24 21:17:13 +02001180 goto ERROR4;
Jean Delvare9060f8b2006-08-28 14:24:17 +02001181 }
Jean Delvarec7f1f712007-09-03 17:11:46 +02001182 if (data->has_fan & (1 << 3)) {
1183 if ((err = device_create_file(dev,
1184 &sensor_dev_attr_fan4_input16.dev_attr))
1185 || (err = device_create_file(dev,
Jean Delvare0124dd72007-11-25 16:16:41 +01001186 &sensor_dev_attr_fan4_min16.dev_attr))
1187 || (err = device_create_file(dev,
1188 &sensor_dev_attr_fan4_alarm.dev_attr)))
Jean Delvarec7f1f712007-09-03 17:11:46 +02001189 goto ERROR4;
1190 }
1191 if (data->has_fan & (1 << 4)) {
1192 if ((err = device_create_file(dev,
1193 &sensor_dev_attr_fan5_input16.dev_attr))
1194 || (err = device_create_file(dev,
Jean Delvare0124dd72007-11-25 16:16:41 +01001195 &sensor_dev_attr_fan5_min16.dev_attr))
1196 || (err = device_create_file(dev,
1197 &sensor_dev_attr_fan5_alarm.dev_attr)))
Jean Delvarec7f1f712007-09-03 17:11:46 +02001198 goto ERROR4;
1199 }
Jean Delvare17d648b2006-08-28 14:23:46 +02001200 } else {
Jean Delvare87673dd2006-08-28 14:37:19 +02001201 /* 8-bit tachometers with clock divider */
Jean Delvare9060f8b2006-08-28 14:24:17 +02001202 if (data->has_fan & (1 << 0)) {
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001203 if ((err = device_create_file(dev,
Jean Delvare87808be2006-09-24 21:17:13 +02001204 &sensor_dev_attr_fan1_input.dev_attr))
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001205 || (err = device_create_file(dev,
Jean Delvare87808be2006-09-24 21:17:13 +02001206 &sensor_dev_attr_fan1_min.dev_attr))
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001207 || (err = device_create_file(dev,
Jean Delvare0124dd72007-11-25 16:16:41 +01001208 &sensor_dev_attr_fan1_div.dev_attr))
1209 || (err = device_create_file(dev,
1210 &sensor_dev_attr_fan1_alarm.dev_attr)))
Jean Delvare87808be2006-09-24 21:17:13 +02001211 goto ERROR4;
Jean Delvare9060f8b2006-08-28 14:24:17 +02001212 }
1213 if (data->has_fan & (1 << 1)) {
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001214 if ((err = device_create_file(dev,
Jean Delvare87808be2006-09-24 21:17:13 +02001215 &sensor_dev_attr_fan2_input.dev_attr))
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001216 || (err = device_create_file(dev,
Jean Delvare87808be2006-09-24 21:17:13 +02001217 &sensor_dev_attr_fan2_min.dev_attr))
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001218 || (err = device_create_file(dev,
Jean Delvare0124dd72007-11-25 16:16:41 +01001219 &sensor_dev_attr_fan2_div.dev_attr))
1220 || (err = device_create_file(dev,
1221 &sensor_dev_attr_fan2_alarm.dev_attr)))
Jean Delvare87808be2006-09-24 21:17:13 +02001222 goto ERROR4;
Jean Delvare9060f8b2006-08-28 14:24:17 +02001223 }
1224 if (data->has_fan & (1 << 2)) {
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001225 if ((err = device_create_file(dev,
Jean Delvare87808be2006-09-24 21:17:13 +02001226 &sensor_dev_attr_fan3_input.dev_attr))
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001227 || (err = device_create_file(dev,
Jean Delvare87808be2006-09-24 21:17:13 +02001228 &sensor_dev_attr_fan3_min.dev_attr))
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001229 || (err = device_create_file(dev,
Jean Delvare0124dd72007-11-25 16:16:41 +01001230 &sensor_dev_attr_fan3_div.dev_attr))
1231 || (err = device_create_file(dev,
1232 &sensor_dev_attr_fan3_alarm.dev_attr)))
Jean Delvare87808be2006-09-24 21:17:13 +02001233 goto ERROR4;
Jean Delvare9060f8b2006-08-28 14:24:17 +02001234 }
Jean Delvare17d648b2006-08-28 14:23:46 +02001235 }
1236
Linus Torvalds1da177e2005-04-16 15:20:36 -07001237 if (enable_pwm_interface) {
Jean Delvare98dd22c2008-10-09 15:33:58 +02001238 if (!(sio_data->skip_pwm & (1 << 0))) {
1239 if ((err = device_create_file(dev,
1240 &sensor_dev_attr_pwm1_enable.dev_attr))
1241 || (err = device_create_file(dev,
1242 &sensor_dev_attr_pwm1.dev_attr))
1243 || (err = device_create_file(dev,
1244 &dev_attr_pwm1_freq)))
1245 goto ERROR4;
1246 }
1247 if (!(sio_data->skip_pwm & (1 << 1))) {
1248 if ((err = device_create_file(dev,
1249 &sensor_dev_attr_pwm2_enable.dev_attr))
1250 || (err = device_create_file(dev,
1251 &sensor_dev_attr_pwm2.dev_attr))
1252 || (err = device_create_file(dev,
1253 &dev_attr_pwm2_freq)))
1254 goto ERROR4;
1255 }
1256 if (!(sio_data->skip_pwm & (1 << 2))) {
1257 if ((err = device_create_file(dev,
1258 &sensor_dev_attr_pwm3_enable.dev_attr))
1259 || (err = device_create_file(dev,
1260 &sensor_dev_attr_pwm3.dev_attr))
1261 || (err = device_create_file(dev,
1262 &dev_attr_pwm3_freq)))
1263 goto ERROR4;
1264 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001265 }
1266
Jean Delvare895ff262009-12-09 20:35:47 +01001267 if (!sio_data->skip_vid) {
Jean Delvare303760b2005-07-31 21:52:01 +02001268 data->vrm = vid_which_vrm();
Jean Delvare87673dd2006-08-28 14:37:19 +02001269 /* VID reading from Super-I/O config space if available */
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001270 data->vid = sio_data->vid_value;
1271 if ((err = device_create_file(dev,
Jean Delvare87808be2006-09-24 21:17:13 +02001272 &dev_attr_vrm))
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001273 || (err = device_create_file(dev,
Jean Delvare87808be2006-09-24 21:17:13 +02001274 &dev_attr_cpu0_vid)))
1275 goto ERROR4;
1276 }
1277
Tony Jones1beeffe2007-08-20 13:46:20 -07001278 data->hwmon_dev = hwmon_device_register(dev);
1279 if (IS_ERR(data->hwmon_dev)) {
1280 err = PTR_ERR(data->hwmon_dev);
Jean Delvare87808be2006-09-24 21:17:13 +02001281 goto ERROR4;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001282 }
1283
1284 return 0;
1285
Jean Delvare87808be2006-09-24 21:17:13 +02001286ERROR4:
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001287 sysfs_remove_group(&dev->kobj, &it87_group);
1288 sysfs_remove_group(&dev->kobj, &it87_group_opt);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001289ERROR2:
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001290 platform_set_drvdata(pdev, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001291 kfree(data);
1292ERROR1:
Bjorn Helgaas87b4b662008-01-22 07:21:03 -05001293 release_region(res->start, IT87_EC_EXTENT);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001294ERROR0:
1295 return err;
1296}
1297
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001298static int __devexit it87_remove(struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001299{
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001300 struct it87_data *data = platform_get_drvdata(pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001301
Tony Jones1beeffe2007-08-20 13:46:20 -07001302 hwmon_device_unregister(data->hwmon_dev);
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001303 sysfs_remove_group(&pdev->dev.kobj, &it87_group);
1304 sysfs_remove_group(&pdev->dev.kobj, &it87_group_opt);
Mark M. Hoffman943b0832005-07-15 21:39:18 -04001305
Bjorn Helgaas87b4b662008-01-22 07:21:03 -05001306 release_region(data->addr, IT87_EC_EXTENT);
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001307 platform_set_drvdata(pdev, NULL);
Mark M. Hoffman943b0832005-07-15 21:39:18 -04001308 kfree(data);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001309
1310 return 0;
1311}
1312
Jean Delvare7f999aa2007-02-14 21:15:03 +01001313/* Must be called with data->update_lock held, except during initialization.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001314 We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
1315 would slow down the IT87 access and should not be necessary. */
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001316static int it87_read_value(struct it87_data *data, u8 reg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001317{
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001318 outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
1319 return inb_p(data->addr + IT87_DATA_REG_OFFSET);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001320}
1321
Jean Delvare7f999aa2007-02-14 21:15:03 +01001322/* Must be called with data->update_lock held, except during initialization.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001323 We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
1324 would slow down the IT87 access and should not be necessary. */
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001325static void it87_write_value(struct it87_data *data, u8 reg, u8 value)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001326{
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001327 outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
1328 outb_p(value, data->addr + IT87_DATA_REG_OFFSET);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001329}
1330
1331/* Return 1 if and only if the PWM interface is safe to use */
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001332static int __devinit it87_check_pwm(struct device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001333{
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001334 struct it87_data *data = dev_get_drvdata(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001335 /* Some BIOSes fail to correctly configure the IT87 fans. All fans off
1336 * and polarity set to active low is sign that this is the case so we
1337 * disable pwm control to protect the user. */
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001338 int tmp = it87_read_value(data, IT87_REG_FAN_CTL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001339 if ((tmp & 0x87) == 0) {
1340 if (fix_pwm_polarity) {
1341 /* The user asks us to attempt a chip reconfiguration.
1342 * This means switching to active high polarity and
1343 * inverting all fan speed values. */
1344 int i;
1345 u8 pwm[3];
1346
1347 for (i = 0; i < 3; i++)
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001348 pwm[i] = it87_read_value(data,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001349 IT87_REG_PWM(i));
1350
1351 /* If any fan is in automatic pwm mode, the polarity
1352 * might be correct, as suspicious as it seems, so we
1353 * better don't change anything (but still disable the
1354 * PWM interface). */
1355 if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) {
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001356 dev_info(dev, "Reconfiguring PWM to "
Linus Torvalds1da177e2005-04-16 15:20:36 -07001357 "active high polarity\n");
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001358 it87_write_value(data, IT87_REG_FAN_CTL,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001359 tmp | 0x87);
1360 for (i = 0; i < 3; i++)
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001361 it87_write_value(data,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001362 IT87_REG_PWM(i),
1363 0x7f & ~pwm[i]);
1364 return 1;
1365 }
1366
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001367 dev_info(dev, "PWM configuration is "
Linus Torvalds1da177e2005-04-16 15:20:36 -07001368 "too broken to be fixed\n");
1369 }
1370
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001371 dev_info(dev, "Detected broken BIOS "
Linus Torvalds1da177e2005-04-16 15:20:36 -07001372 "defaults, disabling PWM interface\n");
1373 return 0;
1374 } else if (fix_pwm_polarity) {
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001375 dev_info(dev, "PWM configuration looks "
Linus Torvalds1da177e2005-04-16 15:20:36 -07001376 "sane, won't touch\n");
1377 }
1378
1379 return 1;
1380}
1381
1382/* Called when we have found a new IT87. */
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001383static void __devinit it87_init_device(struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001384{
Jean Delvare591ec652009-12-09 20:35:48 +01001385 struct it87_sio_data *sio_data = pdev->dev.platform_data;
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001386 struct it87_data *data = platform_get_drvdata(pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001387 int tmp, i;
Jean Delvare591ec652009-12-09 20:35:48 +01001388 u8 mask;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001389
1390 /* initialize to sane defaults:
1391 * - if the chip is in manual pwm mode, this will be overwritten with
1392 * the actual settings on the chip (so in this case, initialization
1393 * is not needed)
1394 * - if in automatic or on/off mode, we could switch to manual mode,
1395 * read the registers and set manual_pwm_ctl accordingly, but currently
1396 * this is not implemented, so we initialize to something sane */
1397 for (i = 0; i < 3; i++) {
1398 data->manual_pwm_ctl[i] = 0xff;
1399 }
1400
Jean Delvarec5df9b72006-08-28 14:37:54 +02001401 /* Some chips seem to have default value 0xff for all limit
1402 * registers. For low voltage limits it makes no sense and triggers
1403 * alarms, so change to 0 instead. For high temperature limits, it
1404 * means -1 degree C, which surprisingly doesn't trigger an alarm,
1405 * but is still confusing, so change to 127 degrees C. */
1406 for (i = 0; i < 8; i++) {
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001407 tmp = it87_read_value(data, IT87_REG_VIN_MIN(i));
Jean Delvarec5df9b72006-08-28 14:37:54 +02001408 if (tmp == 0xff)
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001409 it87_write_value(data, IT87_REG_VIN_MIN(i), 0);
Jean Delvarec5df9b72006-08-28 14:37:54 +02001410 }
1411 for (i = 0; i < 3; i++) {
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001412 tmp = it87_read_value(data, IT87_REG_TEMP_HIGH(i));
Jean Delvarec5df9b72006-08-28 14:37:54 +02001413 if (tmp == 0xff)
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001414 it87_write_value(data, IT87_REG_TEMP_HIGH(i), 127);
Jean Delvarec5df9b72006-08-28 14:37:54 +02001415 }
1416
Jean Delvare77fa49d2009-01-07 16:37:35 +01001417 /* Check if temperature channels are reset manually or by some reason */
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001418 tmp = it87_read_value(data, IT87_REG_TEMP_ENABLE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001419 if ((tmp & 0x3f) == 0) {
1420 /* Temp1,Temp3=thermistor; Temp2=thermal diode */
1421 tmp = (tmp & 0xc0) | 0x2a;
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001422 it87_write_value(data, IT87_REG_TEMP_ENABLE, tmp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001423 }
1424 data->sensor = tmp;
1425
1426 /* Check if voltage monitors are reset manually or by some reason */
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001427 tmp = it87_read_value(data, IT87_REG_VIN_ENABLE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001428 if ((tmp & 0xff) == 0) {
1429 /* Enable all voltage monitors */
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001430 it87_write_value(data, IT87_REG_VIN_ENABLE, 0xff);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001431 }
1432
1433 /* Check if tachometers are reset manually or by some reason */
Jean Delvare591ec652009-12-09 20:35:48 +01001434 mask = 0x70 & ~(sio_data->skip_fan << 4);
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001435 data->fan_main_ctrl = it87_read_value(data, IT87_REG_FAN_MAIN_CTRL);
Jean Delvare591ec652009-12-09 20:35:48 +01001436 if ((data->fan_main_ctrl & mask) == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001437 /* Enable all fan tachometers */
Jean Delvare591ec652009-12-09 20:35:48 +01001438 data->fan_main_ctrl |= mask;
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001439 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001440 }
Jean Delvare9060f8b2006-08-28 14:24:17 +02001441 data->has_fan = (data->fan_main_ctrl >> 4) & 0x07;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001442
Jean Delvare17d648b2006-08-28 14:23:46 +02001443 /* Set tachometers to 16-bit mode if needed */
Andrew Paprocki04751692008-08-06 22:41:06 +02001444 if (has_16bit_fans(data)) {
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001445 tmp = it87_read_value(data, IT87_REG_FAN_16BIT);
Jean Delvare9060f8b2006-08-28 14:24:17 +02001446 if (~tmp & 0x07 & data->has_fan) {
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001447 dev_dbg(&pdev->dev,
Jean Delvare17d648b2006-08-28 14:23:46 +02001448 "Setting fan1-3 to 16-bit mode\n");
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001449 it87_write_value(data, IT87_REG_FAN_16BIT,
Jean Delvare17d648b2006-08-28 14:23:46 +02001450 tmp | 0x07);
1451 }
Andrew Paprocki816d8c62008-08-06 22:41:06 +02001452 /* IT8705F only supports three fans. */
1453 if (data->type != it87) {
1454 if (tmp & (1 << 4))
1455 data->has_fan |= (1 << 3); /* fan4 enabled */
1456 if (tmp & (1 << 5))
1457 data->has_fan |= (1 << 4); /* fan5 enabled */
1458 }
Jean Delvare17d648b2006-08-28 14:23:46 +02001459 }
1460
Jean Delvare591ec652009-12-09 20:35:48 +01001461 /* Fan input pins may be used for alternative functions */
1462 data->has_fan &= ~sio_data->skip_fan;
1463
Linus Torvalds1da177e2005-04-16 15:20:36 -07001464 /* Set current fan mode registers and the default settings for the
1465 * other mode registers */
1466 for (i = 0; i < 3; i++) {
1467 if (data->fan_main_ctrl & (1 << i)) {
1468 /* pwm mode */
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001469 tmp = it87_read_value(data, IT87_REG_PWM(i));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001470 if (tmp & 0x80) {
1471 /* automatic pwm - not yet implemented, but
1472 * leave the settings made by the BIOS alone
1473 * until a change is requested via the sysfs
1474 * interface */
1475 } else {
1476 /* manual pwm */
1477 data->manual_pwm_ctl[i] = PWM_FROM_REG(tmp);
1478 }
1479 }
1480 }
1481
1482 /* Start monitoring */
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001483 it87_write_value(data, IT87_REG_CONFIG,
1484 (it87_read_value(data, IT87_REG_CONFIG) & 0x36)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001485 | (update_vbat ? 0x41 : 0x01));
1486}
1487
1488static struct it87_data *it87_update_device(struct device *dev)
1489{
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001490 struct it87_data *data = dev_get_drvdata(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001491 int i;
1492
Ingo Molnar9a61bf62006-01-18 23:19:26 +01001493 mutex_lock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001494
1495 if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
1496 || !data->valid) {
1497
1498 if (update_vbat) {
1499 /* Cleared after each update, so reenable. Value
1500 returned by this read will be previous value */
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001501 it87_write_value(data, IT87_REG_CONFIG,
1502 it87_read_value(data, IT87_REG_CONFIG) | 0x40);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001503 }
1504 for (i = 0; i <= 7; i++) {
1505 data->in[i] =
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001506 it87_read_value(data, IT87_REG_VIN(i));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001507 data->in_min[i] =
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001508 it87_read_value(data, IT87_REG_VIN_MIN(i));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001509 data->in_max[i] =
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001510 it87_read_value(data, IT87_REG_VIN_MAX(i));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001511 }
Jean Delvare3543a532006-08-28 14:27:25 +02001512 /* in8 (battery) has no limit registers */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001513 data->in[8] =
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001514 it87_read_value(data, IT87_REG_VIN(8));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001515
Jean Delvarec7f1f712007-09-03 17:11:46 +02001516 for (i = 0; i < 5; i++) {
Jean Delvare9060f8b2006-08-28 14:24:17 +02001517 /* Skip disabled fans */
1518 if (!(data->has_fan & (1 << i)))
1519 continue;
1520
Linus Torvalds1da177e2005-04-16 15:20:36 -07001521 data->fan_min[i] =
Jean Delvarec7f1f712007-09-03 17:11:46 +02001522 it87_read_value(data, IT87_REG_FAN_MIN[i]);
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001523 data->fan[i] = it87_read_value(data,
Jean Delvarec7f1f712007-09-03 17:11:46 +02001524 IT87_REG_FAN[i]);
Jean Delvare17d648b2006-08-28 14:23:46 +02001525 /* Add high byte if in 16-bit mode */
Andrew Paprocki04751692008-08-06 22:41:06 +02001526 if (has_16bit_fans(data)) {
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001527 data->fan[i] |= it87_read_value(data,
Jean Delvarec7f1f712007-09-03 17:11:46 +02001528 IT87_REG_FANX[i]) << 8;
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001529 data->fan_min[i] |= it87_read_value(data,
Jean Delvarec7f1f712007-09-03 17:11:46 +02001530 IT87_REG_FANX_MIN[i]) << 8;
Jean Delvare17d648b2006-08-28 14:23:46 +02001531 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001532 }
1533 for (i = 0; i < 3; i++) {
1534 data->temp[i] =
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001535 it87_read_value(data, IT87_REG_TEMP(i));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001536 data->temp_high[i] =
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001537 it87_read_value(data, IT87_REG_TEMP_HIGH(i));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001538 data->temp_low[i] =
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001539 it87_read_value(data, IT87_REG_TEMP_LOW(i));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001540 }
1541
Jean Delvare17d648b2006-08-28 14:23:46 +02001542 /* Newer chips don't have clock dividers */
Andrew Paprocki04751692008-08-06 22:41:06 +02001543 if ((data->has_fan & 0x07) && !has_16bit_fans(data)) {
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001544 i = it87_read_value(data, IT87_REG_FAN_DIV);
Jean Delvare17d648b2006-08-28 14:23:46 +02001545 data->fan_div[0] = i & 0x07;
1546 data->fan_div[1] = (i >> 3) & 0x07;
1547 data->fan_div[2] = (i & 0x40) ? 3 : 1;
1548 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001549
1550 data->alarms =
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001551 it87_read_value(data, IT87_REG_ALARM1) |
1552 (it87_read_value(data, IT87_REG_ALARM2) << 8) |
1553 (it87_read_value(data, IT87_REG_ALARM3) << 16);
1554 data->fan_main_ctrl = it87_read_value(data,
1555 IT87_REG_FAN_MAIN_CTRL);
1556 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001557
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001558 data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE);
Andrew Paprocki04751692008-08-06 22:41:06 +02001559 /* The 8705 does not have VID capability.
Jean-Marc Spaggiarib4da93e2009-01-07 16:37:32 +01001560 The 8718 and the 8720 don't use IT87_REG_VID for the
1561 same purpose. */
Jean Delvare17d648b2006-08-28 14:23:46 +02001562 if (data->type == it8712 || data->type == it8716) {
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001563 data->vid = it87_read_value(data, IT87_REG_VID);
Jean Delvare17d648b2006-08-28 14:23:46 +02001564 /* The older IT8712F revisions had only 5 VID pins,
1565 but we assume it is always safe to read 6 bits. */
1566 data->vid &= 0x3f;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001567 }
1568 data->last_updated = jiffies;
1569 data->valid = 1;
1570 }
1571
Ingo Molnar9a61bf62006-01-18 23:19:26 +01001572 mutex_unlock(&data->update_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001573
1574 return data;
1575}
1576
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001577static int __init it87_device_add(unsigned short address,
1578 const struct it87_sio_data *sio_data)
1579{
1580 struct resource res = {
Bjorn Helgaas87b4b662008-01-22 07:21:03 -05001581 .start = address + IT87_EC_OFFSET,
1582 .end = address + IT87_EC_OFFSET + IT87_EC_EXTENT - 1,
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001583 .name = DRVNAME,
1584 .flags = IORESOURCE_IO,
1585 };
1586 int err;
1587
Jean Delvareb9acb642009-01-07 16:37:35 +01001588 err = acpi_check_resource_conflict(&res);
1589 if (err)
1590 goto exit;
1591
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001592 pdev = platform_device_alloc(DRVNAME, address);
1593 if (!pdev) {
1594 err = -ENOMEM;
1595 printk(KERN_ERR DRVNAME ": Device allocation failed\n");
1596 goto exit;
1597 }
1598
1599 err = platform_device_add_resources(pdev, &res, 1);
1600 if (err) {
1601 printk(KERN_ERR DRVNAME ": Device resource addition failed "
1602 "(%d)\n", err);
1603 goto exit_device_put;
1604 }
1605
1606 err = platform_device_add_data(pdev, sio_data,
1607 sizeof(struct it87_sio_data));
1608 if (err) {
1609 printk(KERN_ERR DRVNAME ": Platform data allocation failed\n");
1610 goto exit_device_put;
1611 }
1612
1613 err = platform_device_add(pdev);
1614 if (err) {
1615 printk(KERN_ERR DRVNAME ": Device addition failed (%d)\n",
1616 err);
1617 goto exit_device_put;
1618 }
1619
1620 return 0;
1621
1622exit_device_put:
1623 platform_device_put(pdev);
1624exit:
1625 return err;
1626}
1627
Linus Torvalds1da177e2005-04-16 15:20:36 -07001628static int __init sm_it87_init(void)
1629{
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001630 int err;
1631 unsigned short isa_address=0;
1632 struct it87_sio_data sio_data;
Jean Delvarefde09502005-07-19 23:51:07 +02001633
Jean Delvare98dd22c2008-10-09 15:33:58 +02001634 memset(&sio_data, 0, sizeof(struct it87_sio_data));
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001635 err = it87_find(&isa_address, &sio_data);
1636 if (err)
1637 return err;
1638 err = platform_driver_register(&it87_driver);
1639 if (err)
1640 return err;
1641
1642 err = it87_device_add(isa_address, &sio_data);
1643 if (err){
1644 platform_driver_unregister(&it87_driver);
1645 return err;
1646 }
1647
1648 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001649}
1650
1651static void __exit sm_it87_exit(void)
1652{
corentin.labbeb74f3fd2007-06-13 20:27:36 +02001653 platform_device_unregister(pdev);
1654 platform_driver_unregister(&it87_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001655}
1656
1657
Jean Delvaref1d8e332007-11-25 16:14:44 +01001658MODULE_AUTHOR("Chris Gauthron, "
Jean Delvareb19367c2006-08-28 14:39:26 +02001659 "Jean Delvare <khali@linux-fr.org>");
Jean-Marc Spaggiarib4da93e2009-01-07 16:37:32 +01001660MODULE_DESCRIPTION("IT8705F/8712F/8716F/8718F/8720F/8726F, SiS950 driver");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001661module_param(update_vbat, bool, 0);
1662MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value");
1663module_param(fix_pwm_polarity, bool, 0);
1664MODULE_PARM_DESC(fix_pwm_polarity, "Force PWM polarity to active high (DANGEROUS)");
1665MODULE_LICENSE("GPL");
1666
1667module_init(sm_it87_init);
1668module_exit(sm_it87_exit);