Commit fb72dee2 authored by Greg Kroah-Hartman's avatar Greg Kroah-Hartman

i2c: add bus driver for Intel 801 devices

This is from the i2c CVS tree.
parent e1700574
...@@ -53,5 +53,28 @@ config I2C_AMD8111 ...@@ -53,5 +53,28 @@ config I2C_AMD8111
in the lm_sensors package, which you can download at in the lm_sensors package, which you can download at
http://www.lm-sensors.nu http://www.lm-sensors.nu
config I2C_I801
tristate " Intel 801"
depends on I2C && I2C_PROC
help
If you say yes to this option, support will be included for the Intel
801 family of mainboard I2C interfaces. Specifically, the following
versions of the chipset is supported:
82801AA
82801AB
82801BA
82801CA/CAM
82801DB
This can also be built as a module which can be inserted and removed
while the kernel is running. If you want to compile it as a module,
say M here and read <file:Documentation/modules.txt>.
The module will be called i2c-i801.
You will also need the latest user-space utilties: you can find them
in the lm_sensors package, which you can download at
http://www.lm-sensors.nu
endmenu endmenu
...@@ -5,3 +5,4 @@ ...@@ -5,3 +5,4 @@
obj-$(CONFIG_I2C_ALI15X3) += i2c-ali15x3.o obj-$(CONFIG_I2C_ALI15X3) += i2c-ali15x3.o
obj-$(CONFIG_I2C_AMD756) += i2c-amd756.o obj-$(CONFIG_I2C_AMD756) += i2c-amd756.o
obj-$(CONFIG_I2C_AMD8111) += i2c-amd8111.o obj-$(CONFIG_I2C_AMD8111) += i2c-amd8111.o
obj-$(CONFIG_I2C_I801) += i2c-i801.o
/*
i801.c - Part of lm_sensors, Linux kernel modules for hardware
monitoring
Copyright (c) 1998 - 2002 Frodo Looijaard <frodol@dds.nl>,
Philip Edelbrock <phil@netroedge.com>, and Mark D. Studebaker
<mdsxyz123@yahoo.com>
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.
*/
/*
SUPPORTED DEVICES PCI ID
82801AA 2413
82801AB 2423
82801BA 2443
82801CA/CAM 2483
82801DB 24C3 (HW PEC supported, 32 byte buffer not supported)
This driver supports several versions of Intel's I/O Controller Hubs (ICH).
For SMBus support, they are similar to the PIIX4 and are part
of Intel's '810' and other chipsets.
See the doc/busses/i2c-i801 file for details.
I2C Block Read and Process Call are not supported.
*/
/* Note: we assume there can only be one I801, with one SMBus interface */
/* #define DEBUG 1 */
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/kernel.h>
#include <linux/stddef.h>
#include <linux/sched.h>
#include <linux/ioport.h>
#include <linux/init.h>
#include <linux/i2c.h>
#include <asm/io.h>
MODULE_LICENSE("GPL");
#ifdef I2C_FUNC_SMBUS_BLOCK_DATA_PEC
#define HAVE_PEC
#endif
#ifndef PCI_DEVICE_ID_INTEL_82801CA_SMBUS
#define PCI_DEVICE_ID_INTEL_82801CA_SMBUS 0x2483
#endif
#ifndef PCI_DEVICE_ID_INTEL_82801DB_SMBUS
#define PCI_DEVICE_ID_INTEL_82801DB_SMBUS 0x24C3
#endif
static int supported[] = {PCI_DEVICE_ID_INTEL_82801AA_3,
PCI_DEVICE_ID_INTEL_82801AB_3,
PCI_DEVICE_ID_INTEL_82801BA_2,
PCI_DEVICE_ID_INTEL_82801CA_SMBUS,
PCI_DEVICE_ID_INTEL_82801DB_SMBUS,
0 };
/* I801 SMBus address offsets */
#define SMBHSTSTS (0 + i801_smba)
#define SMBHSTCNT (2 + i801_smba)
#define SMBHSTCMD (3 + i801_smba)
#define SMBHSTADD (4 + i801_smba)
#define SMBHSTDAT0 (5 + i801_smba)
#define SMBHSTDAT1 (6 + i801_smba)
#define SMBBLKDAT (7 + i801_smba)
#define SMBPEC (8 + i801_smba) /* ICH4 only */
#define SMBAUXSTS (12 + i801_smba) /* ICH4 only */
#define SMBAUXCTL (13 + i801_smba) /* ICH4 only */
/* PCI Address Constants */
#define SMBBA 0x020
#define SMBHSTCFG 0x040
#define SMBREV 0x008
/* Host configuration bits for SMBHSTCFG */
#define SMBHSTCFG_HST_EN 1
#define SMBHSTCFG_SMB_SMI_EN 2
#define SMBHSTCFG_I2C_EN 4
/* Other settings */
#define MAX_TIMEOUT 100
#define ENABLE_INT9 0 /* set to 0x01 to enable - untested */
/* I801 command constants */
#define I801_QUICK 0x00
#define I801_BYTE 0x04
#define I801_BYTE_DATA 0x08
#define I801_WORD_DATA 0x0C
#define I801_PROC_CALL 0x10 /* later chips only, unimplemented */
#define I801_BLOCK_DATA 0x14
#define I801_I2C_BLOCK_DATA 0x18 /* unimplemented */
#define I801_BLOCK_LAST 0x34
#define I801_I2C_BLOCK_LAST 0x38 /* unimplemented */
#define I801_START 0x40
#define I801_PEC_EN 0x80 /* ICH4 only */
/* insmod parameters */
/* If force_addr is set to anything different from 0, we forcibly enable
the I801 at the given address. VERY DANGEROUS! */
static int force_addr = 0;
MODULE_PARM(force_addr, "i");
MODULE_PARM_DESC(force_addr,
"Forcibly enable the I801 at the given address. "
"EXTREMELY DANGEROUS!");
static void i801_do_pause(unsigned int amount);
static int i801_transaction(void);
static int i801_block_transaction(union i2c_smbus_data *data,
char read_write, int command);
static unsigned short i801_smba = 0;
static struct pci_dev *I801_dev = NULL;
static int isich4 = 0;
/* Detect whether a I801 can be found, and initialize it, where necessary.
Note the differences between kernels with the old PCI BIOS interface and
newer kernels with the real PCI interface. In compat.h some things are
defined to make the transition easier. */
int i801_setup(void)
{
int error_return = 0;
int *num = supported;
unsigned char temp;
/* First check whether we can access PCI at all */
if (pci_present() == 0) {
printk(KERN_WARNING "i2c-i801.o: Error: No PCI-bus found!\n");
error_return = -ENODEV;
goto END;
}
/* Look for each chip */
/* Note: we keep on searching until we have found 'function 3' */
I801_dev = NULL;
do {
if((I801_dev = pci_find_device(PCI_VENDOR_ID_INTEL,
*num, I801_dev))) {
if(PCI_FUNC(I801_dev->devfn) != 3)
continue;
break;
}
num++;
} while (*num != 0);
if (I801_dev == NULL) {
printk
(KERN_WARNING "i2c-i801.o: Error: Can't detect I801, function 3!\n");
error_return = -ENODEV;
goto END;
}
isich4 = *num == PCI_DEVICE_ID_INTEL_82801DB_SMBUS;
/* Determine the address of the SMBus areas */
if (force_addr) {
i801_smba = force_addr & 0xfff0;
} else {
pci_read_config_word(I801_dev, SMBBA, &i801_smba);
i801_smba &= 0xfff0;
if(i801_smba == 0) {
printk(KERN_ERR "i2c-i801.o: SMB base address uninitialized - upgrade BIOS or use force_addr=0xaddr\n");
return -ENODEV;
}
}
if (check_region(i801_smba, (isich4 ? 16 : 8))) {
printk
(KERN_ERR "i2c-i801.o: I801_smb region 0x%x already in use!\n",
i801_smba);
error_return = -ENODEV;
goto END;
}
pci_read_config_byte(I801_dev, SMBHSTCFG, &temp);
temp &= ~SMBHSTCFG_I2C_EN; /* SMBus timing */
pci_write_config_byte(I801_dev, SMBHSTCFG, temp);
/* If force_addr is set, we program the new address here. Just to make
sure, we disable the device first. */
if (force_addr) {
pci_write_config_byte(I801_dev, SMBHSTCFG, temp & 0xfe);
pci_write_config_word(I801_dev, SMBBA, i801_smba);
pci_write_config_byte(I801_dev, SMBHSTCFG, temp | 0x01);
printk
(KERN_WARNING "i2c-i801.o: WARNING: I801 SMBus interface set to new "
"address %04x!\n", i801_smba);
} else if ((temp & 1) == 0) {
pci_write_config_byte(I801_dev, SMBHSTCFG, temp | 1);
printk(KERN_WARNING "i2c-i801.o: enabling SMBus device\n");
}
request_region(i801_smba, (isich4 ? 16 : 8), "i801-smbus");
#ifdef DEBUG
if (temp & 0x02)
printk
(KERN_DEBUG "i2c-i801.o: I801 using Interrupt SMI# for SMBus.\n");
else
printk
(KERN_DEBUG "i2c-i801.o: I801 using PCI Interrupt for SMBus.\n");
pci_read_config_byte(I801_dev, SMBREV, &temp);
printk(KERN_DEBUG "i2c-i801.o: SMBREV = 0x%X\n", temp);
printk(KERN_DEBUG "i2c-i801.o: I801_smba = 0x%X\n", i801_smba);
#endif /* DEBUG */
END:
return error_return;
}
void i801_do_pause(unsigned int amount)
{
current->state = TASK_INTERRUPTIBLE;
schedule_timeout(amount);
}
int i801_transaction(void)
{
int temp;
int result = 0;
int timeout = 0;
#ifdef DEBUG
printk
(KERN_DEBUG "i2c-i801.o: Transaction (pre): CNT=%02x, CMD=%02x, ADD=%02x, DAT0=%02x, "
"DAT1=%02x\n", inb_p(SMBHSTCNT), inb_p(SMBHSTCMD),
inb_p(SMBHSTADD), inb_p(SMBHSTDAT0), inb_p(SMBHSTDAT1));
#endif
/* Make sure the SMBus host is ready to start transmitting */
/* 0x1f = Failed, Bus_Err, Dev_Err, Intr, Host_Busy */
if ((temp = (0x1f & inb_p(SMBHSTSTS))) != 0x00) {
#ifdef DEBUG
printk(KERN_DEBUG "i2c-i801.o: SMBus busy (%02x). Resetting... \n",
temp);
#endif
outb_p(temp, SMBHSTSTS);
if ((temp = (0x1f & inb_p(SMBHSTSTS))) != 0x00) {
#ifdef DEBUG
printk(KERN_DEBUG "i2c-i801.o: Failed! (%02x)\n", temp);
#endif
return -1;
} else {
#ifdef DEBUG
printk(KERN_DEBUG "i2c-i801.o: Successfull!\n");
#endif
}
}
outb_p(inb(SMBHSTCNT) | I801_START, SMBHSTCNT);
/* We will always wait for a fraction of a second! */
do {
i801_do_pause(1);
temp = inb_p(SMBHSTSTS);
} while ((temp & 0x01) && (timeout++ < MAX_TIMEOUT));
/* If the SMBus is still busy, we give up */
if (timeout >= MAX_TIMEOUT) {
#ifdef DEBUG
printk(KERN_DEBUG "i2c-i801.o: SMBus Timeout!\n");
result = -1;
#endif
}
if (temp & 0x10) {
result = -1;
#ifdef DEBUG
printk(KERN_DEBUG "i2c-i801.o: Error: Failed bus transaction\n");
#endif
}
if (temp & 0x08) {
result = -1;
printk
(KERN_ERR "i2c-i801.o: Bus collision! SMBus may be locked until next hard\n"
"reset. (sorry!)\n");
/* Clock stops and slave is stuck in mid-transmission */
}
if (temp & 0x04) {
result = -1;
#ifdef DEBUG
printk(KERN_DEBUG "i2c-i801.o: Error: no response!\n");
#endif
}
if ((inb_p(SMBHSTSTS) & 0x1f) != 0x00)
outb_p(inb(SMBHSTSTS), SMBHSTSTS);
if ((temp = (0x1f & inb_p(SMBHSTSTS))) != 0x00) {
#ifdef DEBUG
printk
(KERN_DEBUG "i2c-i801.o: Failed reset at end of transaction (%02x)\n",
temp);
#endif
}
#ifdef DEBUG
printk
(KERN_DEBUG "i2c-i801.o: Transaction (post): CNT=%02x, CMD=%02x, ADD=%02x, "
"DAT0=%02x, DAT1=%02x\n", inb_p(SMBHSTCNT), inb_p(SMBHSTCMD),
inb_p(SMBHSTADD), inb_p(SMBHSTDAT0), inb_p(SMBHSTDAT1));
#endif
return result;
}
/* All-inclusive block transaction function */
int i801_block_transaction(union i2c_smbus_data *data, char read_write,
int command)
{
int i, len;
int smbcmd;
int temp;
int result = 0;
int timeout;
unsigned char hostc, errmask;
if (command == I2C_SMBUS_I2C_BLOCK_DATA) {
if (read_write == I2C_SMBUS_WRITE) {
/* set I2C_EN bit in configuration register */
pci_read_config_byte(I801_dev, SMBHSTCFG, &hostc);
pci_write_config_byte(I801_dev, SMBHSTCFG,
hostc | SMBHSTCFG_I2C_EN);
} else {
printk("i2c-i801.o: "
"I2C_SMBUS_I2C_BLOCK_READ not supported!\n");
return -1;
}
}
if (read_write == I2C_SMBUS_WRITE) {
len = data->block[0];
if (len < 1)
len = 1;
if (len > 32)
len = 32;
outb_p(len, SMBHSTDAT0);
outb_p(data->block[1], SMBBLKDAT);
} else {
len = 32; /* max for reads */
}
if(isich4 && command != I2C_SMBUS_I2C_BLOCK_DATA) {
/* set 32 byte buffer */
}
for (i = 1; i <= len; i++) {
if (i == len && read_write == I2C_SMBUS_READ)
smbcmd = I801_BLOCK_LAST;
else
smbcmd = I801_BLOCK_DATA;
#if 0 /* now using HW PEC */
if(isich4 && command == I2C_SMBUS_BLOCK_DATA_PEC)
smbcmd |= I801_PEC_EN;
#endif
outb_p(smbcmd | ENABLE_INT9, SMBHSTCNT);
#ifdef DEBUG
printk
(KERN_DEBUG "i2c-i801.o: Block (pre %d): CNT=%02x, CMD=%02x, ADD=%02x, "
"DAT0=%02x, BLKDAT=%02x\n", i, inb_p(SMBHSTCNT),
inb_p(SMBHSTCMD), inb_p(SMBHSTADD), inb_p(SMBHSTDAT0),
inb_p(SMBBLKDAT));
#endif
/* Make sure the SMBus host is ready to start transmitting */
temp = inb_p(SMBHSTSTS);
if (i == 1) {
/* Erronenous conditions before transaction:
* Byte_Done, Failed, Bus_Err, Dev_Err, Intr, Host_Busy */
errmask=0x9f;
} else {
/* Erronenous conditions during transaction:
* Failed, Bus_Err, Dev_Err, Intr */
errmask=0x1e;
}
if (temp & errmask) {
#ifdef DEBUG
printk
(KERN_DEBUG "i2c-i801.o: SMBus busy (%02x). Resetting... \n",
temp);
#endif
outb_p(temp, SMBHSTSTS);
if (((temp = inb_p(SMBHSTSTS)) & errmask) != 0x00) {
printk
(KERN_ERR "i2c-i801.o: Reset failed! (%02x)\n",
temp);
result = -1;
goto END;
}
if (i != 1) {
result = -1; /* if die in middle of block transaction, fail */
goto END;
}
}
if (i == 1) {
#if 0 /* #ifdef HAVE_PEC (now using HW PEC) */
if(isich4 && command == I2C_SMBUS_BLOCK_DATA_PEC) {
if(read_write == I2C_SMBUS_WRITE)
outb_p(data->block[len + 1], SMBPEC);
}
#endif
outb_p(inb(SMBHSTCNT) | I801_START, SMBHSTCNT);
}
/* We will always wait for a fraction of a second! */
timeout = 0;
do {
temp = inb_p(SMBHSTSTS);
i801_do_pause(1);
}
while ((!(temp & 0x80))
&& (timeout++ < MAX_TIMEOUT));
/* If the SMBus is still busy, we give up */
if (timeout >= MAX_TIMEOUT) {
result = -1;
#ifdef DEBUG
printk(KERN_DEBUG "i2c-i801.o: SMBus Timeout!\n");
#endif
}
if (temp & 0x10) {
result = -1;
#ifdef DEBUG
printk
(KERN_DEBUG "i2c-i801.o: Error: Failed bus transaction\n");
#endif
} else if (temp & 0x08) {
result = -1;
printk(KERN_ERR "i2c-i801.o: Bus collision!\n");
} else if (temp & 0x04) {
result = -1;
#ifdef DEBUG
printk(KERN_DEBUG "i2c-i801.o: Error: no response!\n");
#endif
}
if (i == 1 && read_write == I2C_SMBUS_READ) {
len = inb_p(SMBHSTDAT0);
if (len < 1)
len = 1;
if (len > 32)
len = 32;
data->block[0] = len;
}
/* Retrieve/store value in SMBBLKDAT */
if (read_write == I2C_SMBUS_READ)
data->block[i] = inb_p(SMBBLKDAT);
if (read_write == I2C_SMBUS_WRITE && i+1 <= len)
outb_p(data->block[i+1], SMBBLKDAT);
if ((temp & 0x9e) != 0x00)
outb_p(temp, SMBHSTSTS); /* signals SMBBLKDAT ready */
#ifdef DEBUG
if ((temp = (0x1e & inb_p(SMBHSTSTS))) != 0x00) {
printk
(KERN_DEBUG "i2c-i801.o: Bad status (%02x) at end of transaction\n",
temp);
}
printk
(KERN_DEBUG "i2c-i801.o: Block (post %d): CNT=%02x, CMD=%02x, ADD=%02x, "
"DAT0=%02x, BLKDAT=%02x\n", i, inb_p(SMBHSTCNT),
inb_p(SMBHSTCMD), inb_p(SMBHSTADD), inb_p(SMBHSTDAT0),
inb_p(SMBBLKDAT));
#endif
if (result < 0)
goto END;
}
#ifdef HAVE_PEC
if(isich4 && command == I2C_SMBUS_BLOCK_DATA_PEC) {
/* wait for INTR bit as advised by Intel */
timeout = 0;
do {
temp = inb_p(SMBHSTSTS);
i801_do_pause(1);
} while ((!(temp & 0x02))
&& (timeout++ < MAX_TIMEOUT));
if (timeout >= MAX_TIMEOUT) {
printk(KERN_DEBUG "i2c-i801.o: PEC Timeout!\n");
}
#if 0 /* now using HW PEC */
if(read_write == I2C_SMBUS_READ) {
data->block[len + 1] = inb_p(SMBPEC);
}
#endif
outb_p(temp, SMBHSTSTS);
}
#endif
result = 0;
END:
if (command == I2C_SMBUS_I2C_BLOCK_DATA) {
/* restore saved configuration register value */
pci_write_config_byte(I801_dev, SMBHSTCFG, hostc);
}
return result;
}
/* Return -1 on error. */
s32 i801_access(struct i2c_adapter * adap, u16 addr, unsigned short flags,
char read_write, u8 command, int size,
union i2c_smbus_data * data)
{
int hwpec = 0;
int block = 0;
int ret, xact = 0;
#ifdef HAVE_PEC
if(isich4)
hwpec = (flags & I2C_CLIENT_PEC) != 0;
#endif
switch (size) {
case I2C_SMBUS_QUICK:
outb_p(((addr & 0x7f) << 1) | (read_write & 0x01),
SMBHSTADD);
xact = I801_QUICK;
break;
case I2C_SMBUS_BYTE:
outb_p(((addr & 0x7f) << 1) | (read_write & 0x01),
SMBHSTADD);
if (read_write == I2C_SMBUS_WRITE)
outb_p(command, SMBHSTCMD);
xact = I801_BYTE;
break;
case I2C_SMBUS_BYTE_DATA:
outb_p(((addr & 0x7f) << 1) | (read_write & 0x01),
SMBHSTADD);
outb_p(command, SMBHSTCMD);
if (read_write == I2C_SMBUS_WRITE)
outb_p(data->byte, SMBHSTDAT0);
xact = I801_BYTE_DATA;
break;
case I2C_SMBUS_WORD_DATA:
outb_p(((addr & 0x7f) << 1) | (read_write & 0x01),
SMBHSTADD);
outb_p(command, SMBHSTCMD);
if (read_write == I2C_SMBUS_WRITE) {
outb_p(data->word & 0xff, SMBHSTDAT0);
outb_p((data->word & 0xff00) >> 8, SMBHSTDAT1);
}
xact = I801_WORD_DATA;
break;
case I2C_SMBUS_BLOCK_DATA:
case I2C_SMBUS_I2C_BLOCK_DATA:
#ifdef HAVE_PEC
case I2C_SMBUS_BLOCK_DATA_PEC:
if(hwpec && size == I2C_SMBUS_BLOCK_DATA)
size = I2C_SMBUS_BLOCK_DATA_PEC;
#endif
outb_p(((addr & 0x7f) << 1) | (read_write & 0x01),
SMBHSTADD);
outb_p(command, SMBHSTCMD);
block = 1;
break;
case I2C_SMBUS_PROC_CALL:
default:
printk(KERN_ERR "i2c-i801.o: Unsupported transaction %d\n", size);
return -1;
}
#ifdef HAVE_PEC
if(isich4 && hwpec) {
if(size != I2C_SMBUS_QUICK &&
size != I2C_SMBUS_I2C_BLOCK_DATA)
outb_p(1, SMBAUXCTL); /* enable HW PEC */
}
#endif
if(block)
ret = i801_block_transaction(data, read_write, size);
else {
outb_p(xact | ENABLE_INT9, SMBHSTCNT);
ret = i801_transaction();
}
#ifdef HAVE_PEC
if(isich4 && hwpec) {
if(size != I2C_SMBUS_QUICK &&
size != I2C_SMBUS_I2C_BLOCK_DATA)
outb_p(0, SMBAUXCTL);
}
#endif
if(block)
return ret;
if(ret)
return -1;
if ((read_write == I2C_SMBUS_WRITE) || (xact == I801_QUICK))
return 0;
switch (xact & 0x7f) {
case I801_BYTE: /* Result put in SMBHSTDAT0 */
case I801_BYTE_DATA:
data->byte = inb_p(SMBHSTDAT0);
break;
case I801_WORD_DATA:
data->word = inb_p(SMBHSTDAT0) + (inb_p(SMBHSTDAT1) << 8);
break;
}
return 0;
}
u32 i801_func(struct i2c_adapter *adapter)
{
return I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE |
I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA |
I2C_FUNC_SMBUS_BLOCK_DATA | I2C_FUNC_SMBUS_WRITE_I2C_BLOCK
#ifdef HAVE_PEC
| (isich4 ? I2C_FUNC_SMBUS_BLOCK_DATA_PEC |
I2C_FUNC_SMBUS_HWPEC_CALC
: 0)
#endif
;
}
static struct i2c_algorithm smbus_algorithm = {
.name = "Non-I2C SMBus adapter",
.id = I2C_ALGO_SMBUS,
.smbus_xfer = i801_access,
.functionality = i801_func,
};
static struct i2c_adapter i801_adapter = {
.owner = THIS_MODULE,
.name = "unset",
.id = I2C_ALGO_SMBUS | I2C_HW_SMBUS_I801,
.algo = &smbus_algorithm,
};
static struct pci_device_id i801_ids[] __devinitdata = {
{ 0, }
};
static int __devinit i801_probe(struct pci_dev *dev, const struct pci_device_id *id)
{
if (i801_setup()) {
printk
(KERN_WARNING "i2c-i801.o: I801 not detected, module not inserted.\n");
return -ENODEV;
}
sprintf(i801_adapter.name, "SMBus I801 adapter at %04x",
i801_smba);
i2c_add_adapter(&i801_adapter);
}
static void __devexit i801_remove(struct pci_dev *dev)
{
i2c_del_adapter(&i801_adapter);
}
static struct pci_driver i801_driver = {
.name = "i801 smbus",
.id_table = i801_ids,
.probe = i801_probe,
.remove = __devexit_p(i801_remove),
};
static int __init i2c_i801_init(void)
{
printk(KERN_INFO "i2c-i801.o version %s (%s)\n", I2C_VERSION, I2C_DATE);
return pci_module_init(&i801_driver);
}
static void __exit i2c_i801_exit(void)
{
pci_unregister_driver(&i801_driver);
release_region(i801_smba, (isich4 ? 16 : 8));
}
MODULE_AUTHOR
("Frodo Looijaard <frodol@dds.nl>, Philip Edelbrock <phil@netroedge.com>, and Mark D. Studebaker <mdsxyz123@yahoo.com>");
MODULE_DESCRIPTION("I801 SMBus driver");
module_init(i2c_i801_init);
module_exit(i2c_i801_exit);
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment