wt/lm-sensors
1
0 Fork 0
mirror of https://github.com/lm-sensors/lm-sensors.git synced 2026-11-08 16:11:26 +00:00
Code Issues Packages Projects Releases Wiki Activity

add VT8233 support to i2c-viapro.

Browse Source 
git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@1196 7894878c-1315-0410-8ee3-d5d059ff63e0
This commit is contained in:
Mark D. Studebaker committed 2001-10-06 22:20:41 +00:00
1 parent 1a23eab90d
commit 8ee41b7738
5 files changed
+110 -93
Download Patch File Download Diff File Expand all files Collapse all files

No files matched your search

kernel/busses/i2c-viapro.c
+82 -75
View File
@@ -1,8 +1,9 @@
/*
i2c-viapro.c - Part of lm_sensors, Linux kernel modules for hardware
monitoring
Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl>,
Philip Edelbrock <phil@netroedge.com>, Kyösti Mälkki <kmalkki@cc.hut.fi>
Copyright (c) 1998 - 2001 Frodo Looijaard <frodol@dds.nl>,
Philip Edelbrock <phil@netroedge.com>, Kyösti Mälkki <kmalkki@cc.hut.fi>,
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
@@ -19,7 +20,14 @@
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* Note: we assume there can only be one VT596A/B, with one SMBus interface */
/*
Supports Via devices:
82C596A/B (0x3050)
82C596B (0x3051)
82C686A/B
8233
Note: we assume there can only be one device, with one SMBus interface.
*/
#include <linux/version.h>
#include <linux/module.h>
@@ -35,14 +43,38 @@
#include <linux/init.h>
#ifndef PCI_DEVICE_ID_VIA_82C596_3
#define PCI_DEVICE_ID_VIA_82C596_3 0x3050
#define PCI_DEVICE_ID_VIA_82C596_3 0x3050
#endif
#ifndef PCI_DEVICE_ID_VIA_82C596B_3
#define PCI_DEVICE_ID_VIA_82C596B_3 0x3051
#endif
#ifndef PCI_DEVICE_ID_VIA_82C686_4
#define PCI_DEVICE_ID_VIA_82C686_4 0x3057
#define PCI_DEVICE_ID_VIA_82C686_4 0x3057
#endif
#ifndef PCI_DEVICE_ID_VIA_8233_0
#define PCI_DEVICE_ID_VIA_8233_0 0x3074
#endif
#define SMBBA1 0x90
#define SMBBA2 0x80
#define SMBBA3 0xD0
struct sd {
const unsigned short dev;
const unsigned char base;
const unsigned char hstcfg;
const char *name;
};
static struct sd supported[] = {
{PCI_DEVICE_ID_VIA_82C596_3, SMBBA1, 0xD2, "VT82C596A/B"},
{PCI_DEVICE_ID_VIA_82C596B_3, SMBBA1, 0xD2, "VT82C596B"},
{PCI_DEVICE_ID_VIA_82C686_4, SMBBA1, 0xD2, "VT82C686A/B"},
{PCI_DEVICE_ID_VIA_8233_0, SMBBA3, 0xD2, "VT8233"},
{0, 0, 0, NULL}
};
static struct sd *num = supported;
/* SMBus address offsets */
#define SMBHSTSTS (0 + vt596_smba)
@@ -63,12 +95,8 @@
/* SMBus data in configuration space can be found in two places,
We try to select the better one*/
static unsigned short smb_cf_base;
static unsigned short smb_cf_hstcfg;
#define SMBBA1 0x90
#define SMBBA2 0x80
#define SMBBA (smb_cf_base)
#define SMBHSTCFG (smb_cf_hstcfg)
#define SMBSLVC (SMBHSTCFG+1)
#define SMBSHDW1 (SMBHSTCFG+2)
@@ -92,14 +120,14 @@ static unsigned short smb_cf_hstcfg;
VT596. DANGEROUS! */
static int force = 0;
MODULE_PARM(force, "i");
MODULE_PARM_DESC(force, "Forcibly enable the VT82C596 SMBus. DANGEROUS!");
MODULE_PARM_DESC(force, "Forcibly enable the SMBus. DANGEROUS!");
/* If force_addr is set to anything different from 0, we forcibly enable
the VT596 at the given address. VERY DANGEROUS! */
static int force_addr = 0;
MODULE_PARM(force_addr, "i");
MODULE_PARM_DESC(force_addr,
"Forcibly enable the VT82C596 SMBus at the given address. "
"Forcibly enable the SMBus at the given address. "
"EXTREMELY DANGEROUS!");
#ifdef MODULE
@@ -150,75 +178,56 @@ static int __initdata vt596_initialized;
static unsigned short vt596_smba = 0;
/* Detect whether a VT596 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. */
/* Detect whether a compatible device can be found, and initialize it. */
int vt596_setup(void)
{
int error_return = 0;
unsigned char temp;
struct pci_dev *VT596_dev;
struct pci_dev *VT596_dev = NULL;
/* First check whether we can access PCI at all */
if (pci_present() == 0) {
printk("i2c-viapro.o: Error: No PCI-bus found!\n");
error_return = -ENODEV;
goto END;
}
if (pci_present() == 0)
return(-ENODEV);
/* Look for the VT596 function 3 _or_ VT686 function 4 */
VT596_dev = NULL;
VT596_dev = pci_find_device(PCI_VENDOR_ID_VIA,
PCI_DEVICE_ID_VIA_82C596_3, VT596_dev);
if (VT596_dev == NULL)
VT596_dev = pci_find_device(PCI_VENDOR_ID_VIA,
PCI_DEVICE_ID_VIA_82C686_4,
VT596_dev);
/* Look for a supported device/function */
do {
if((VT596_dev = pci_find_device(PCI_VENDOR_ID_VIA, num->dev,
VT596_dev)))
break;
} while ((++num)->dev);
if (VT596_dev == NULL)
VT596_dev = pci_find_device(PCI_VENDOR_ID_VIA,
PCI_DEVICE_ID_VIA_82C596B_3,
VT596_dev);
if (VT596_dev == NULL) {
printk
("i2c-viapro.o: Error: Can't detect vt82c596 or vt82c686");
error_return = -ENODEV;
goto END;
}
/* Determine the configuration space registers for the SMBus areas */
if ((!pci_read_config_word(VT596_dev, SMBBA1, &vt596_smba))
&& (vt596_smba & 0x1)) {
smb_cf_base = SMBBA1;
smb_cf_hstcfg = 0xD2;
} else if ((!pci_read_config_word(VT596_dev, SMBBA2, &vt596_smba))
&& (vt596_smba & 0x1)) {
smb_cf_base = SMBBA2;
smb_cf_hstcfg = 0x84;
} else {
printk
("i2c-viapro.o: Cannot configure SMBus I/O Base address\n");
error_return = -ENODEV;
goto END;
}
return(-ENODEV);
printk("i2c-viapro.o: Found Via %s device\n", num->name);
/* Determine the address of the SMBus areas */
smb_cf_hstcfg = num->hstcfg;
if (force_addr) {
vt596_smba = force_addr & 0xfff0;
vt596_smba = force_addr;
force = 0;
} else {
vt596_smba &= 0xfff0;
if ((pci_read_config_word(VT596_dev, num->base, &vt596_smba))
|| !(vt596_smba & 0x1)) {
/* try 2nd address and config reg. for 596 */
if((num->dev == PCI_DEVICE_ID_VIA_82C596_3) &&
(!pci_read_config_word(VT596_dev, SMBBA2, &vt596_smba)) &&
(vt596_smba & 0x1))
smb_cf_hstcfg = 0x84;
else
goto FAIL;
} else {
FAIL:
printk
("i2c-viapro.o: Cannot configure SMBus I/O Base address\n");
return(-ENODEV);
}
}
vt596_smba &= 0xfff0;
if (check_region(vt596_smba, 8)) {
printk
("i2c-viapro.o: vt82c596_smb region 0x%x already in use!\n",
vt596_smba);
error_return = -ENODEV;
goto END;
printk("i2c-viapro.o: SMB region 0x%x already in use!\n",
vt596_smba);
return(-ENODEV);
}
pci_read_config_byte(VT596_dev, SMBHSTCFG, &temp);
@@ -226,11 +235,11 @@ int vt596_setup(void)
sure, we disable the VT596 first. */
if (force_addr) {
pci_write_config_byte(VT596_dev, SMBHSTCFG, temp & 0xfe);
pci_write_config_word(VT596_dev, SMBBA, vt596_smba);
pci_write_config_word(VT596_dev, num->base, vt596_smba);
pci_write_config_byte(VT596_dev, SMBHSTCFG, temp | 0x01);
printk
("i2c-viapro.o: WARNING: VT596 SMBus interface set to new "
"address %04x!\n", vt596_smba);
("i2c-viapro.o: WARNING: SMBus interface set to new "
"address 0x%04x!\n", vt596_smba);
} else if ((temp & 1) == 0) {
if (force) {
/* NOTE: This assumes I/O space and other allocations WERE
@@ -245,8 +254,7 @@ int vt596_setup(void)
} else {
printk
("SMBUS: Error: Host SMBus controller not enabled!\n");
error_return = -ENODEV;
goto END;
return(-ENODEV);
}
}
@@ -268,8 +276,7 @@ int vt596_setup(void)
printk("i2c-viapro.o: VT596_smba = 0x%X\n", vt596_smba);
#endif /* DEBUG */
END:
return error_return;
return(0);
}
@@ -297,13 +304,13 @@ int vt596_transaction(void)
/* Make sure the SMBus host is ready to start transmitting */
if ((temp = inb_p(SMBHSTSTS)) != 0x00) {
#ifdef DEBUG
printk("i2c-viapro.o: SMBus busy (%02x). Resetting... \n",
printk("i2c-viapro.o: SMBus busy (0x%02x). Resetting... \n",
temp);
#endif
outb_p(temp, SMBHSTSTS);
if ((temp = inb_p(SMBHSTSTS)) != 0x00) {
#ifdef DEBUG
printk("i2c-viapro.o: Failed! (%02x)\n", temp);
printk("i2c-viapro.o: Failed! (0x%02x)\n", temp);
#endif
return -1;
} else {
@@ -498,12 +505,12 @@ int __init i2c_vt596_init(void)
vt596_initialized = 0;
if ((res = vt596_setup())) {
printk
("i2c-viapro.o: vt82c596 not detected, module not inserted.\n");
("i2c-viapro.o: Can't detect vt82c596 or compatible device, module not inserted.\n");
vt596_cleanup();
return res;
}
vt596_initialized++;
sprintf(vt596_adapter.name, "SMBus vt82c596 adapter at %04x",
sprintf(vt596_adapter.name, "SMBus Via Pro adapter at %04x",
vt596_smba);
if ((res = i2c_add_adapter(&vt596_adapter))) {
printk
@@ -512,7 +519,7 @@ int __init i2c_vt596_init(void)
return res;
}
vt596_initialized++;
printk("i2c-viapro.o: vt82c596 bus detected and initialized\n");
printk("i2c-viapro.o: Via Pro SMBus detected and initialized\n");
return 0;
}