aboutsummaryrefslogtreecommitdiff
path: root/drivers/i2c/chips/via686a.c
diff options
context:
space:
mode:
authorTony Luck <tony.luck@intel.com>2005-07-13 12:15:43 -0700
committerTony Luck <tony.luck@intel.com>2005-07-13 12:15:43 -0700
commit99ad25a313bda566a346b46a6015afa65bc0a02b (patch)
treeb9443fed1ab74f320c4ee0791864ee96d7c069df /drivers/i2c/chips/via686a.c
parentf62c4a96f74d6c6dd56d1742697e94a5c2085e87 (diff)
parent9a556e89081b0c1c2f83cee915363b15a68a6f2d (diff)
Auto merge with /home/aegl/GIT/linus
Diffstat (limited to 'drivers/i2c/chips/via686a.c')
-rw-r--r--drivers/i2c/chips/via686a.c875
1 files changed, 0 insertions, 875 deletions
diff --git a/drivers/i2c/chips/via686a.c b/drivers/i2c/chips/via686a.c
deleted file mode 100644
index 137d9b7cacd..00000000000
--- a/drivers/i2c/chips/via686a.c
+++ /dev/null
@@ -1,875 +0,0 @@
-/*
- via686a.c - Part of lm_sensors, Linux kernel modules
- for hardware monitoring
-
- Copyright (c) 1998 - 2002 Frodo Looijaard <frodol@dds.nl>,
- Kyösti Mälkki <kmalkki@cc.hut.fi>,
- Mark Studebaker <mdsxyz123@yahoo.com>,
- and Bob Dougherty <bobd@stanford.edu>
- (Some conversion-factor data were contributed by Jonathan Teh Soon Yew
- <j.teh@iname.com> and Alex van Kaam <darkside@chello.nl>.)
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-
-/*
- Supports the Via VT82C686A, VT82C686B south bridges.
- Reports all as a 686A.
- Warning - only supports a single device.
-*/
-
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/pci.h>
-#include <linux/jiffies.h>
-#include <linux/i2c.h>
-#include <linux/i2c-sensor.h>
-#include <linux/init.h>
-#include <asm/io.h>
-
-
-/* If force_addr is set to anything different from 0, we forcibly enable
- the device at the given address. */
-static unsigned short force_addr = 0;
-module_param(force_addr, ushort, 0);
-MODULE_PARM_DESC(force_addr,
- "Initialize the base address of the sensors");
-
-/* Addresses to scan.
- Note that we can't determine the ISA address until we have initialized
- our module */
-static unsigned short normal_i2c[] = { I2C_CLIENT_END };
-static unsigned int normal_isa[] = { 0x0000, I2C_CLIENT_ISA_END };
-
-/* Insmod parameters */
-SENSORS_INSMOD_1(via686a);
-
-/*
- The Via 686a southbridge has a LM78-like chip integrated on the same IC.
- This driver is a customized copy of lm78.c
-*/
-
-/* Many VIA686A constants specified below */
-
-/* Length of ISA address segment */
-#define VIA686A_EXTENT 0x80
-#define VIA686A_BASE_REG 0x70
-#define VIA686A_ENABLE_REG 0x74
-
-/* The VIA686A registers */
-/* ins numbered 0-4 */
-#define VIA686A_REG_IN_MAX(nr) (0x2b + ((nr) * 2))
-#define VIA686A_REG_IN_MIN(nr) (0x2c + ((nr) * 2))
-#define VIA686A_REG_IN(nr) (0x22 + (nr))
-
-/* fans numbered 1-2 */
-#define VIA686A_REG_FAN_MIN(nr) (0x3a + (nr))
-#define VIA686A_REG_FAN(nr) (0x28 + (nr))
-
-/* temps numbered 1-3 */
-static const u8 VIA686A_REG_TEMP[] = { 0x20, 0x21, 0x1f };
-static const u8 VIA686A_REG_TEMP_OVER[] = { 0x39, 0x3d, 0x1d };
-static const u8 VIA686A_REG_TEMP_HYST[] = { 0x3a, 0x3e, 0x1e };
-/* bits 7-6 */
-#define VIA686A_REG_TEMP_LOW1 0x4b
-/* 2 = bits 5-4, 3 = bits 7-6 */
-#define VIA686A_REG_TEMP_LOW23 0x49
-
-#define VIA686A_REG_ALARM1 0x41
-#define VIA686A_REG_ALARM2 0x42
-#define VIA686A_REG_FANDIV 0x47
-#define VIA686A_REG_CONFIG 0x40
-/* The following register sets temp interrupt mode (bits 1-0 for temp1,
- 3-2 for temp2, 5-4 for temp3). Modes are:
- 00 interrupt stays as long as value is out-of-range
- 01 interrupt is cleared once register is read (default)
- 10 comparator mode- like 00, but ignores hysteresis
- 11 same as 00 */
-#define VIA686A_REG_TEMP_MODE 0x4b
-/* We'll just assume that you want to set all 3 simultaneously: */
-#define VIA686A_TEMP_MODE_MASK 0x3F
-#define VIA686A_TEMP_MODE_CONTINUOUS 0x00
-
-/* Conversions. Limit checking is only done on the TO_REG
- variants.
-
-********* VOLTAGE CONVERSIONS (Bob Dougherty) ********
- From HWMon.cpp (Copyright 1998-2000 Jonathan Teh Soon Yew):
- voltagefactor[0]=1.25/2628; (2628/1.25=2102.4) // Vccp
- voltagefactor[1]=1.25/2628; (2628/1.25=2102.4) // +2.5V
- voltagefactor[2]=1.67/2628; (2628/1.67=1573.7) // +3.3V
- voltagefactor[3]=2.6/2628; (2628/2.60=1010.8) // +5V
- voltagefactor[4]=6.3/2628; (2628/6.30=417.14) // +12V
- in[i]=(data[i+2]*25.0+133)*voltagefactor[i];
- That is:
- volts = (25*regVal+133)*factor
- regVal = (volts/factor-133)/25
- (These conversions were contributed by Jonathan Teh Soon Yew
- <j.teh@iname.com>) */
-static inline u8 IN_TO_REG(long val, int inNum)
-{
- /* To avoid floating point, we multiply constants by 10 (100 for +12V).
- Rounding is done (120500 is actually 133000 - 12500).
- Remember that val is expressed in 0.001V/bit, which is why we divide
- by an additional 10000 (100000 for +12V): 1000 for val and 10 (100)
- for the constants. */
- if (inNum <= 1)
- return (u8)
- SENSORS_LIMIT((val * 21024 - 1205000) / 250000, 0, 255);
- else if (inNum == 2)
- return (u8)
- SENSORS_LIMIT((val * 15737 - 1205000) / 250000, 0, 255);
- else if (inNum == 3)
- return (u8)
- SENSORS_LIMIT((val * 10108 - 1205000) / 250000, 0, 255);
- else
- return (u8)
- SENSORS_LIMIT((val * 41714 - 12050000) / 2500000, 0, 255);
-}
-
-static inline long IN_FROM_REG(u8 val, int inNum)
-{
- /* To avoid floating point, we multiply constants by 10 (100 for +12V).
- We also multiply them by 1000 because we want 0.001V/bit for the
- output value. Rounding is done. */
- if (inNum <= 1)
- return (long) ((250000 * val + 1330000 + 21024 / 2) / 21024);
- else if (inNum == 2)
- return (long) ((250000 * val + 1330000 + 15737 / 2) / 15737);
- else if (inNum == 3)
- return (long) ((250000 * val + 1330000 + 10108 / 2) / 10108);
- else
- return (long) ((2500000 * val + 13300000 + 41714 / 2) / 41714);
-}
-
-/********* FAN RPM CONVERSIONS ********/
-/* Higher register values = slower fans (the fan's strobe gates a counter).
- But this chip saturates back at 0, not at 255 like all the other chips.
- So, 0 means 0 RPM */
-static inline u8 FAN_TO_REG(long rpm, int div)
-{
- if (rpm == 0)
- return 0;
- rpm = SENSORS_LIMIT(rpm, 1, 1000000);
- return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 255);
-}
-
-#define FAN_FROM_REG(val,div) ((val)==0?0:(val)==255?0:1350000/((val)*(div)))
-
-/******** TEMP CONVERSIONS (Bob Dougherty) *********/
-/* linear fits from HWMon.cpp (Copyright 1998-2000 Jonathan Teh Soon Yew)
- if(temp<169)
- return double(temp)*0.427-32.08;
- else if(temp>=169 && temp<=202)
- return double(temp)*0.582-58.16;
- else
- return double(temp)*0.924-127.33;
-
- A fifth-order polynomial fits the unofficial data (provided by Alex van
- Kaam <darkside@chello.nl>) a bit better. It also give more reasonable
- numbers on my machine (ie. they agree with what my BIOS tells me).
- Here's the fifth-order fit to the 8-bit data:
- temp = 1.625093e-10*val^5 - 1.001632e-07*val^4 + 2.457653e-05*val^3 -
- 2.967619e-03*val^2 + 2.175144e-01*val - 7.090067e+0.
-
- (2000-10-25- RFD: thanks to Uwe Andersen <uandersen@mayah.com> for
- finding my typos in this formula!)
-
- Alas, none of the elegant function-fit solutions will work because we
- aren't allowed to use floating point in the kernel and doing it with
- integers doesn't provide enough precision. So we'll do boring old
- look-up table stuff. The unofficial data (see below) have effectively
- 7-bit resolution (they are rounded to the nearest degree). I'm assuming
- that the transfer function of the device is monotonic and smooth, so a
- smooth function fit to the data will allow us to get better precision.
- I used the 5th-order poly fit described above and solved for
- VIA register values 0-255. I *10 before rounding, so we get tenth-degree
- precision. (I could have done all 1024 values for our 10-bit readings,
- but the function is very linear in the useful range (0-80 deg C), so
- we'll just use linear interpolation for 10-bit readings.) So, tempLUT
- is the temp at via register values 0-255: */
-static const long tempLUT[] =
-{ -709, -688, -667, -646, -627, -607, -589, -570, -553, -536, -519,
- -503, -487, -471, -456, -442, -428, -414, -400, -387, -375,
- -362, -350, -339, -327, -316, -305, -295, -285, -275, -265,
- -255, -246, -237, -229, -220, -212, -204, -196, -188, -180,
- -173, -166, -159, -152, -145, -139, -132, -126, -120, -114,
- -108, -102, -96, -91, -85, -80, -74, -69, -64, -59, -54, -49,
- -44, -39, -34, -29, -25, -20, -15, -11, -6, -2, 3, 7, 12, 16,
- 20, 25, 29, 33, 37, 42, 46, 50, 54, 59, 63, 67, 71, 75, 79, 84,
- 88, 92, 96, 100, 104, 109, 113, 117, 121, 125, 130, 134, 138,
- 142, 146, 151, 155, 159, 163, 168, 172, 176, 181, 185, 189,
- 193, 198, 202, 206, 211, 215, 219, 224, 228, 232, 237, 241,
- 245, 250, 254, 259, 263, 267, 272, 276, 281, 285, 290, 294,
- 299, 303, 307, 312, 316, 321, 325, 330, 334, 339, 344, 348,
- 353, 357, 362, 366, 371, 376, 380, 385, 390, 395, 399, 404,
- 409, 414, 419, 423, 428, 433, 438, 443, 449, 454, 459, 464,
- 469, 475, 480, 486, 491, 497, 502, 508, 514, 520, 526, 532,
- 538, 544, 551, 557, 564, 571, 578, 584, 592, 599, 606, 614,
- 621, 629, 637, 645, 654, 662, 671, 680, 689, 698, 708, 718,
- 728, 738, 749, 759, 770, 782, 793, 805, 818, 830, 843, 856,
- 870, 883, 898, 912, 927, 943, 958, 975, 991, 1008, 1026, 1044,
- 1062, 1081, 1101, 1121, 1141, 1162, 1184, 1206, 1229, 1252,
- 1276, 1301, 1326, 1352, 1378, 1406, 1434, 1462
-};
-
-/* the original LUT values from Alex van Kaam <darkside@chello.nl>
- (for via register values 12-240):
-{-50,-49,-47,-45,-43,-41,-39,-38,-37,-35,-34,-33,-32,-31,
--30,-29,-28,-27,-26,-25,-24,-24,-23,-22,-21,-20,-20,-19,-18,-17,-17,-16,-15,
--15,-14,-14,-13,-12,-12,-11,-11,-10,-9,-9,-8,-8,-7,-7,-6,-6,-5,-5,-4,-4,-3,
--3,-2,-2,-1,-1,0,0,1,1,1,3,3,3,4,4,4,5,5,5,6,6,7,7,8,8,9,9,9,10,10,11,11,12,
-12,12,13,13,13,14,14,15,15,16,16,16,17,17,18,18,19,19,20,20,21,21,21,22,22,
-22,23,23,24,24,25,25,26,26,26,27,27,27,28,28,29,29,30,30,30,31,31,32,32,33,
-33,34,34,35,35,35,36,36,37,37,38,38,39,39,40,40,41,41,42,42,43,43,44,44,45,
-45,46,46,47,48,48,49,49,50,51,51,52,52,53,53,54,55,55,56,57,57,58,59,59,60,
-61,62,62,63,64,65,66,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,83,84,
-85,86,88,89,91,92,94,96,97,99,101,103,105,107,109,110};
-
-
- Here's the reverse LUT. I got it by doing a 6-th order poly fit (needed
- an extra term for a good fit to these inverse data!) and then
- solving for each temp value from -50 to 110 (the useable range for
- this chip). Here's the fit:
- viaRegVal = -1.160370e-10*val^6 +3.193693e-08*val^5 - 1.464447e-06*val^4
- - 2.525453e-04*val^3 + 1.424593e-02*val^2 + 2.148941e+00*val +7.275808e+01)
- Note that n=161: */
-static const u8 viaLUT[] =
-{ 12, 12, 13, 14, 14, 15, 16, 16, 17, 18, 18, 19, 20, 20, 21, 22, 23,
- 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 35, 36, 37, 39, 40,
- 41, 43, 45, 46, 48, 49, 51, 53, 55, 57, 59, 60, 62, 64, 66,
- 69, 71, 73, 75, 77, 79, 82, 84, 86, 88, 91, 93, 95, 98, 100,
- 103, 105, 107, 110, 112, 115, 117, 119, 122, 124, 126, 129,
- 131, 134, 136, 138, 140, 143, 145, 147, 150, 152, 154, 156,
- 158, 160, 162, 164, 166, 168, 170, 172, 174, 176, 178, 180,
- 182, 183, 185, 187, 188, 190, 192, 193, 195, 196, 198, 199,
- 200, 202, 203, 205, 206, 207, 208, 209, 210, 211, 212, 213,
- 214, 215, 216, 217, 218, 219, 220, 221, 222, 222, 223, 224,
- 225, 226, 226, 227, 228, 228, 229, 230, 230, 231, 232, 232,
- 233, 233, 234, 235, 235, 236, 236, 237, 237, 238, 238, 239,
- 239, 240
-};
-
-/* Converting temps to (8-bit) hyst and over registers
- No interpolation here.
- The +50 is because the temps start at -50 */
-static inline u8 TEMP_TO_REG(long val)
-{
- return viaLUT[val <= -50000 ? 0 : val >= 110000 ? 160 :
- (val < 0 ? val - 500 : val + 500) / 1000 + 50];
-}
-
-/* for 8-bit temperature hyst and over registers */
-#define TEMP_FROM_REG(val) (tempLUT[(val)] * 100)
-
-/* for 10-bit temperature readings */
-static inline long TEMP_FROM_REG10(u16 val)
-{
- u16 eightBits = val >> 2;
- u16 twoBits = val & 3;
-
- /* no interpolation for these */
- if (twoBits == 0 || eightBits == 255)
- return TEMP_FROM_REG(eightBits);
-
- /* do some linear interpolation */
- return (tempLUT[eightBits] * (4 - twoBits) +
- tempLUT[eightBits + 1] * twoBits) * 25;
-}
-
-#define DIV_FROM_REG(val) (1 << (val))
-#define DIV_TO_REG(val) ((val)==8?3:(val)==4?2:(val)==1?0:1)
-
-/* For the VIA686A, we need to keep some data in memory.
- The structure is dynamically allocated, at the same time when a new
- via686a client is allocated. */
-struct via686a_data {
- struct i2c_client client;
- struct semaphore update_lock;
- char valid; /* !=0 if following fields are valid */
- unsigned long last_updated; /* In jiffies */
-
- u8 in[5]; /* Register value */
- u8 in_max[5]; /* Register value */
- u8 in_min[5]; /* Register value */
- u8 fan[2]; /* Register value */
- u8 fan_min[2]; /* Register value */
- u16 temp[3]; /* Register value 10 bit */
- u8 temp_over[3]; /* Register value */
- u8 temp_hyst[3]; /* Register value */
- u8 fan_div[2]; /* Register encoding, shifted right */
- u16 alarms; /* Register encoding, combined */
-};
-
-static struct pci_dev *s_bridge; /* pointer to the (only) via686a */
-
-static int via686a_attach_adapter(struct i2c_adapter *adapter);
-static int via686a_detect(struct i2c_adapter *adapter, int address, int kind);
-static int via686a_detach_client(struct i2c_client *client);
-
-static inline int via686a_read_value(struct i2c_client *client, u8 reg)
-{
- return (inb_p(client->addr + reg));
-}
-
-static inline void via686a_write_value(struct i2c_client *client, u8 reg,
- u8 value)
-{
- outb_p(value, client->addr + reg);
-}
-
-static struct via686a_data *via686a_update_device(struct device *dev);
-static void via686a_init_client(struct i2c_client *client);
-
-/* following are the sysfs callback functions */
-
-/* 7 voltage sensors */
-static ssize_t show_in(struct device *dev, char *buf, int nr) {
- struct via686a_data *data = via686a_update_device(dev);
- return sprintf(buf, "%ld\n", IN_FROM_REG(data->in[nr], nr));
-}
-
-static ssize_t show_in_min(struct device *dev, char *buf, int nr) {
- struct via686a_data *data = via686a_update_device(dev);
- return sprintf(buf, "%ld\n", IN_FROM_REG(data->in_min[nr], nr));
-}
-
-static ssize_t show_in_max(struct device *dev, char *buf, int nr) {
- struct via686a_data *data = via686a_update_device(dev);
- return sprintf(buf, "%ld\n", IN_FROM_REG(data->in_max[nr], nr));
-}
-
-static ssize_t set_in_min(struct device *dev, const char *buf,
- size_t count, int nr) {
- struct i2c_client *client = to_i2c_client(dev);
- struct via686a_data *data = i2c_get_clientdata(client);
- unsigned long val = simple_strtoul(buf, NULL, 10);
-
- down(&data->update_lock);
- data->in_min[nr] = IN_TO_REG(val, nr);
- via686a_write_value(client, VIA686A_REG_IN_MIN(nr),
- data->in_min[nr]);
- up(&data->update_lock);
- return count;
-}
-static ssize_t set_in_max(struct device *dev, const char *buf,
- size_t count, int nr) {
- struct i2c_client *client = to_i2c_client(dev);
- struct via686a_data *data = i2c_get_clientdata(client);
- unsigned long val = simple_strtoul(buf, NULL, 10);
-
- down(&data->update_lock);
- data->in_max[nr] = IN_TO_REG(val, nr);
- via686a_write_value(client, VIA686A_REG_IN_MAX(nr),
- data->in_max[nr]);
- up(&data->update_lock);
- return count;
-}
-#define show_in_offset(offset) \
-static ssize_t \
- show_in##offset (struct device *dev, struct device_attribute *attr, char *buf) \
-{ \
- return show_in(dev, buf, offset); \
-} \
-static ssize_t \
- show_in##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \
-{ \
- return show_in_min(dev, buf, offset); \
-} \
-static ssize_t \
- show_in##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \
-{ \
- return show_in_max(dev, buf, offset); \
-} \
-static ssize_t set_in##offset##_min (struct device *dev, struct device_attribute *attr, \
- const char *buf, size_t count) \
-{ \
- return set_in_min(dev, buf, count, offset); \
-} \
-static ssize_t set_in##offset##_max (struct device *dev, struct device_attribute *attr, \
- const char *buf, size_t count) \
-{ \
- return set_in_max(dev, buf, count, offset); \
-} \
-static DEVICE_ATTR(in##offset##_input, S_IRUGO, show_in##offset, NULL);\
-static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
- show_in##offset##_min, set_in##offset##_min); \
-static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
- show_in##offset##_max, set_in##offset##_max);
-
-show_in_offset(0);
-show_in_offset(1);
-show_in_offset(2);
-show_in_offset(3);
-show_in_offset(4);
-
-/* 3 temperatures */
-static ssize_t show_temp(struct device *dev, char *buf, int nr) {
- struct via686a_data *data = via686a_update_device(dev);
- return sprintf(buf, "%ld\n", TEMP_FROM_REG10(data->temp[nr]));
-}
-static ssize_t show_temp_over(struct device *dev, char *buf, int nr) {
- struct via686a_data *data = via686a_update_device(dev);
- return sprintf(buf, "%ld\n", TEMP_FROM_REG(data->temp_over[nr]));
-}
-static ssize_t show_temp_hyst(struct device *dev, char *buf, int nr) {
- struct via686a_data *data = via686a_update_device(dev);
- return sprintf(buf, "%ld\n", TEMP_FROM_REG(data->temp_hyst[nr]));
-}
-static ssize_t set_temp_over(struct device *dev, const char *buf,
- size_t count, int nr) {
- struct i2c_client *client = to_i2c_client(dev);
- struct via686a_data *data = i2c_get_clientdata(client);
- int val = simple_strtol(buf, NULL, 10);
-
- down(&data->update_lock);
- data->temp_over[nr] = TEMP_TO_REG(val);
- via686a_write_value(client, VIA686A_REG_TEMP_OVER[nr],
- data->temp_over[nr]);
- up(&data->update_lock);
- return count;
-}
-static ssize_t set_temp_hyst(struct device *dev, const char *buf,
- size_t count, int nr) {
- struct i2c_client *client = to_i2c_client(dev);
- struct via686a_data *data = i2c_get_clientdata(client);
- int val = simple_strtol(buf, NULL, 10);
-
- down(&data->update_lock);
- data->temp_hyst[nr] = TEMP_TO_REG(val);
- via686a_write_value(client, VIA686A_REG_TEMP_HYST[nr],
- data->temp_hyst[nr]);
- up(&data->update_lock);
- return count;
-}
-#define show_temp_offset(offset) \
-static ssize_t show_temp_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
-{ \
- return show_temp(dev, buf, offset - 1); \
-} \
-static ssize_t \
-show_temp_##offset##_over (struct device *dev, struct device_attribute *attr, char *buf) \
-{ \
- return show_temp_over(dev, buf, offset - 1); \
-} \
-static ssize_t \
-show_temp_##offset##_hyst (struct device *dev, struct device_attribute *attr, char *buf) \
-{ \
- return show_temp_hyst(dev, buf, offset - 1); \
-} \
-static ssize_t set_temp_##offset##_over (struct device *dev, struct device_attribute *attr, \
- const char *buf, size_t count) \
-{ \
- return set_temp_over(dev, buf, count, offset - 1); \
-} \
-static ssize_t set_temp_##offset##_hyst (struct device *dev, struct device_attribute *attr, \
- const char *buf, size_t count) \
-{ \
- return set_temp_hyst(dev, buf, count, offset - 1); \
-} \
-static DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_temp_##offset, NULL);\
-static DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
- show_temp_##offset##_over, set_temp_##offset##_over); \
-static DEVICE_ATTR(temp##offset##_max_hyst, S_IRUGO | S_IWUSR, \
- show_temp_##offset##_hyst, set_temp_##offset##_hyst);
-
-show_temp_offset(1);
-show_temp_offset(2);
-show_temp_offset(3);
-
-/* 2 Fans */
-static ssize_t show_fan(struct device *dev, char *buf, int nr) {
- struct via686a_data *data = via686a_update_device(dev);
- return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr],
- DIV_FROM_REG(data->fan_div[nr])) );
-}
-static ssize_t show_fan_min(struct device *dev, char *buf, int nr) {
- struct via686a_data *data = via686a_update_device(dev);
- return sprintf(buf, "%d\n",
- FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr])) );
-}
-static ssize_t show_fan_div(struct device *dev, char *buf, int nr) {
- struct via686a_data *data = via686a_update_device(dev);
- return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]) );
-}
-static ssize_t set_fan_min(struct device *dev, const char *buf,
- size_t count, int nr) {
- struct i2c_client *client = to_i2c_client(dev);
- struct via686a_data *data = i2c_get_clientdata(client);
- int val = simple_strtol(buf, NULL, 10);
-
- down(&data->update_lock);
- data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
- via686a_write_value(client, VIA686A_REG_FAN_MIN(nr+1), data->fan_min[nr]);
- up(&data->update_lock);
- return count;
-}
-static ssize_t set_fan_div(struct device *dev, const char *buf,
- size_t count, int nr) {
- struct i2c_client *client = to_i2c_client(dev);
- struct via686a_data *data = i2c_get_clientdata(client);
- int val = simple_strtol(buf, NULL, 10);
- int old;
-
- down(&data->update_lock);
- old = via686a_read_value(client, VIA686A_REG_FANDIV);
- data->fan_div[nr] = DIV_TO_REG(val);
- old = (old & 0x0f) | (data->fan_div[1] << 6) | (data->fan_div[0] << 4);
- via686a_write_value(client, VIA686A_REG_FANDIV, old);
- up(&data->update_lock);
- return count;
-}
-
-#define show_fan_offset(offset) \
-static ssize_t show_fan_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
-{ \
- return show_fan(dev, buf, offset - 1); \
-} \
-static ssize_t show_fan_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \
-{ \
- return show_fan_min(dev, buf, offset - 1); \
-} \
-static ssize_t show_fan_##offset##_div (struct device *dev, struct device_attribute *attr, char *buf) \
-{ \
- return show_fan_div(dev, buf, offset - 1); \
-} \
-static ssize_t set_fan_##offset##_min (struct device *dev, struct device_attribute *attr, \
- const char *buf, size_t count) \
-{ \
- return set_fan_min(dev, buf, count, offset - 1); \
-} \
-static ssize_t set_fan_##offset##_div (struct device *dev, struct device_attribute *attr, \
- const char *buf, size_t count) \
-{ \
- return set_fan_div(dev, buf, count, offset - 1); \
-} \
-static DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan_##offset, NULL);\
-static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
- show_fan_##offset##_min, set_fan_##offset##_min); \
-static DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \
- show_fan_##offset##_div, set_fan_##offset##_div);
-
-show_fan_offset(1);
-show_fan_offset(2);
-
-/* Alarms */
-static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf) {
- struct via686a_data *data = via686a_update_device(dev);
- return sprintf(buf, "%u\n", data->alarms);
-}
-static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
-
-/* The driver. I choose to use type i2c_driver, as at is identical to both
- smbus_driver and isa_driver, and clients could be of either kind */
-static struct i2c_driver via686a_driver = {
- .owner = THIS_MODULE,
- .name = "via686a",
- .id = I2C_DRIVERID_VIA686A,
- .flags = I2C_DF_NOTIFY,
- .attach_adapter = via686a_attach_adapter,
- .detach_client = via686a_detach_client,
-};
-
-
-/* This is called when the module is loaded */
-static int via686a_attach_adapter(struct i2c_adapter *adapter)
-{
- if (!(adapter->class & I2C_CLASS_HWMON))
- return 0;
- return i2c_detect(adapter, &addr_data, via686a_detect);
-}
-
-static int via686a_detect(struct i2c_adapter *adapter, int address, int kind)
-{
- struct i2c_client *new_client;
- struct via686a_data *data;
- int err = 0;
- const char client_name[] = "via686a";
- u16 val;
-
- /* Make sure we are probing the ISA bus!! */
- if (!i2c_is_isa_adapter(adapter)) {
- dev_err(&adapter->dev,
- "via686a_detect called for an I2C bus adapter?!?\n");
- return 0;
- }
-
- /* 8231 requires multiple of 256, we enforce that on 686 as well */
- if (force_addr)
- address = force_addr & 0xFF00;
-
- if (force_addr) {
- dev_warn(&adapter->dev, "forcing ISA address 0x%04X\n",
- address);
- if (PCIBIOS_SUCCESSFUL !=
- pci_write_config_word(s_bridge, VIA686A_BASE_REG, address))
- return -ENODEV;
- }
- if (PCIBIOS_SUCCESSFUL !=
- pci_read_config_word(s_bridge, VIA686A_ENABLE_REG, &val))
- return -ENODEV;
- if (!(val & 0x0001)) {
- dev_warn(&adapter->dev, "enabling sensors\n");
- if (PCIBIOS_SUCCESSFUL !=
- pci_write_config_word(s_bridge, VIA686A_ENABLE_REG,
- val | 0x0001))
- return -ENODEV;
- }
-
- /* Reserve the ISA region */
- if (!request_region(address, VIA686A_EXTENT, via686a_driver.name)) {
- dev_err(&adapter->dev, "region 0x%x already in use!\n",
- address);
- return -ENODEV;
- }
-
- if (!(data = kmalloc(sizeof(struct via686a_data), GFP_KERNEL))) {
- err = -ENOMEM;
- goto ERROR0;
- }
- memset(data, 0, sizeof(struct via686a_data));
-
- new_client = &data->client;
- i2c_set_clientdata(new_client, data);
- new_client->addr = address;
- new_client->adapter = adapter;
- new_client->driver = &via686a_driver;
- new_client->flags = 0;
-
- /* Fill in the remaining client fields and put into the global list */
- strlcpy(new_client->name, client_name, I2C_NAME_SIZE);
-
- data->valid = 0;
- init_MUTEX(&data->update_lock);
- /* Tell the I2C layer a new client has arrived */
- if ((err = i2c_attach_client(new_client)))
- goto ERROR3;
-
- /* Initialize the VIA686A chip */
- via686a_init_client(new_client);
-
- /* Register sysfs hooks */
- device_create_file(&new_client->dev, &dev_attr_in0_input);
- device_create_file(&new_client->dev, &dev_attr_in1_input);
- device_create_file(&new_client->dev, &dev_attr_in2_input);
- device_create_file(&new_client->dev, &dev_attr_in3_input);
- device_create_file(&new_client->dev, &dev_attr_in4_input);
- device_create_file(&new_client->dev, &dev_attr_in0_min);
- device_create_file(&new_client->dev, &dev_attr_in1_min);
- device_create_file(&new_client->dev, &dev_attr_in2_min);
- device_create_file(&new_client->dev, &dev_attr_in3_min);
- device_create_file(&new_client->dev, &dev_attr_in4_min);
- device_create_file(&new_client->dev, &dev_attr_in0_max);
- device_create_file(&new_client->dev, &dev_attr_in1_max);
- device_create_file(&new_client->dev, &dev_attr_in2_max);
- device_create_file(&new_client->dev, &dev_attr_in3_max);
- device_create_file(&new_client->dev, &dev_attr_in4_max);
- device_create_file(&new_client->dev, &dev_attr_temp1_input);
- device_create_file(&new_client->dev, &dev_attr_temp2_input);
- device_create_file(&new_client->dev, &dev_attr_temp3_input);
- device_create_file(&new_client->dev, &dev_attr_temp1_max);
- device_create_file(&new_client->dev, &dev_attr_temp2_max);
- device_create_file(&new_client->dev, &dev_attr_temp3_max);
- device_create_file(&new_client->dev, &dev_attr_temp1_max_hyst);
- device_create_file(&new_client->dev, &dev_attr_temp2_max_hyst);
- device_create_file(&new_client->dev, &dev_attr_temp3_max_hyst);
- device_create_file(&new_client->dev, &dev_attr_fan1_input);
- device_create_file(&new_client->dev, &dev_attr_fan2_input);
- device_create_file(&new_client->dev, &dev_attr_fan1_min);
- device_create_file(&new_client->dev, &dev_attr_fan2_min);
- device_create_file(&new_client->dev, &dev_attr_fan1_div);
- device_create_file(&new_client->dev, &dev_attr_fan2_div);
- device_create_file(&new_client->dev, &dev_attr_alarms);
-
- return 0;
-
-ERROR3:
- kfree(data);
-ERROR0:
- release_region(address, VIA686A_EXTENT);
- return err;
-}
-
-static int via686a_detach_client(struct i2c_client *client)
-{
- int err;
-
- if ((err = i2c_detach_client(client))) {
- dev_err(&client->dev,
- "Client deregistration failed, client not detached.\n");
- return err;
- }
-
- release_region(client->addr, VIA686A_EXTENT);
- kfree(i2c_get_clientdata(client));
-
- return 0;
-}
-
-/* Called when we have found a new VIA686A. Set limits, etc. */
-static void via686a_init_client(struct i2c_client *client)
-{
- u8 reg;
-
- /* Start monitoring */
- reg = via686a_read_value(client, VIA686A_REG_CONFIG);
- via686a_write_value(client, VIA686A_REG_CONFIG, (reg|0x01)&0x7F);
-
- /* Configure temp interrupt mode for continuous-interrupt operation */
- via686a_write_value(client, VIA686A_REG_TEMP_MODE,
- via686a_read_value(client, VIA686A_REG_TEMP_MODE) &
- !(VIA686A_TEMP_MODE_MASK | VIA686A_TEMP_MODE_CONTINUOUS));
-}
-
-static struct via686a_data *via686a_update_device(struct device *dev)
-{
- struct i2c_client *client = to_i2c_client(dev);
- struct via686a_data *data = i2c_get_clientdata(client);
- int i;
-
- down(&data->update_lock);
-
- if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
- || !data->valid) {
- for (i = 0; i <= 4; i++) {
- data->in[i] =
- via686a_read_value(client, VIA686A_REG_IN(i));
- data->in_min[i] = via686a_read_value(client,
- VIA686A_REG_IN_MIN
- (i));
- data->in_max[i] =
- via686a_read_value(client, VIA686A_REG_IN_MAX(i));
- }
- for (i = 1; i <= 2; i++) {
- data->fan[i - 1] =
- via686a_read_value(client, VIA686A_REG_FAN(i));
- data->fan_min[i - 1] = via686a_read_value(client,
- VIA686A_REG_FAN_MIN(i));
- }
- for (i = 0; i <= 2; i++) {
- data->temp[i] = via686a_read_value(client,
- VIA686A_REG_TEMP[i]) << 2;
- data->temp_over[i] =
- via686a_read_value(client,
- VIA686A_REG_TEMP_OVER[i]);
- data->temp_hyst[i] =
- via686a_read_value(client,
- VIA686A_REG_TEMP_HYST[i]);
- }
- /* add in lower 2 bits
- temp1 uses bits 7-6 of VIA686A_REG_TEMP_LOW1
- temp2 uses bits 5-4 of VIA686A_REG_TEMP_LOW23
- temp3 uses bits 7-6 of VIA686A_REG_TEMP_LOW23
- */
- data->temp[0] |= (via686a_read_value(client,
- VIA686A_REG_TEMP_LOW1)
- & 0xc0) >> 6;
- data->temp[1] |=
- (via686a_read_value(client, VIA686A_REG_TEMP_LOW23) &
- 0x30) >> 4;
- data->temp[2] |=
- (via686a_read_value(client, VIA686A_REG_TEMP_LOW23) &
- 0xc0) >> 6;
-
- i = via686a_read_value(client, VIA686A_REG_FANDIV);
- data->fan_div[0] = (i >> 4) & 0x03;
- data->fan_div[1] = i >> 6;
- data->alarms =
- via686a_read_value(client,
- VIA686A_REG_ALARM1) |
- (via686a_read_value(client, VIA686A_REG_ALARM2) << 8);
- data->last_updated = jiffies;
- data->valid = 1;
- }
-
- up(&data->update_lock);
-
- return data;
-}
-
-static struct pci_device_id via686a_pci_ids[] = {
- { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4) },
- { 0, }
-};
-
-MODULE_DEVICE_TABLE(pci, via686a_pci_ids);
-
-static int __devinit via686a_pci_probe(struct pci_dev *dev,
- const struct pci_device_id *id)
-{
- u16 val;
- int addr = 0;
-
- if (PCIBIOS_SUCCESSFUL !=
- pci_read_config_word(dev, VIA686A_BASE_REG, &val))
- return -ENODEV;
-
- addr = val & ~(VIA686A_EXTENT - 1);
- if (addr == 0 && force_addr == 0) {
- dev_err(&dev->dev, "base address not set - upgrade BIOS "
- "or use force_addr=0xaddr\n");
- return -ENODEV;
- }
- if (force_addr)
- addr = force_addr; /* so detect will get called */
-
- if (!addr) {
- dev_err(&dev->dev, "No Via 686A sensors found.\n");
- return -ENODEV;
- }
- normal_isa[0] = addr;
-
- s_bridge = pci_dev_get(dev);
- if (i2c_add_driver(&via686a_driver)) {
- pci_dev_put(s_bridge);
- s_bridge = NULL;
- }
-
- /* Always return failure here. This is to allow other drivers to bind
- * to this pci device. We don't really want to have control over the
- * pci device, we only wanted to read as few register values from it.
- */
- return -ENODEV;
-}
-
-static struct pci_driver via686a_pci_driver = {
- .name = "via686a",
- .id_table = via686a_pci_ids,
- .probe = via686a_pci_probe,
-};
-
-static int __init sm_via686a_init(void)
-{
- return pci_register_driver(&via686a_pci_driver);
-}
-
-static void __exit sm_via686a_exit(void)
-{
- pci_unregister_driver(&via686a_pci_driver);
- if (s_bridge != NULL) {
- i2c_del_driver(&via686a_driver);
- pci_dev_put(s_bridge);
- s_bridge = NULL;
- }
-}
-
-MODULE_AUTHOR("Kyösti Mälkki <kmalkki@cc.hut.fi>, "
- "Mark Studebaker <mdsxyz123@yahoo.com> "
- "and Bob Dougherty <bobd@stanford.edu>");
-MODULE_DESCRIPTION("VIA 686A Sensor device");
-MODULE_LICENSE("GPL");
-
-module_init(sm_via686a_init);
-module_exit(sm_via686a_exit);