2005-04-17 06:20:36 +08:00
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/*
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2005-09-23 03:50:47 +08:00
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Copyright (c) 1998 - 2002 Frodo Looijaard <frodol@dds.nl>,
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2007-10-20 05:21:04 +08:00
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Philip Edelbrock <phil@netroedge.com>, Kyösti Mälkki <kmalkki@cc.hut.fi>,
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2005-04-17 06:20:36 +08:00
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Mark D. Studebaker <mdsxyz123@yahoo.com>
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2008-01-28 01:14:51 +08:00
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Copyright (C) 2005 - 2008 Jean Delvare <khali@linux-fr.org>
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2005-04-17 06:20:36 +08:00
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/*
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2005-09-23 04:09:07 +08:00
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Supports the following VIA south bridges:
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Chip name PCI ID REV I2C block
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VT82C596A 0x3050 no
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VT82C596B 0x3051 no
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VT82C686A 0x3057 0x30 no
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VT82C686B 0x3057 0x40 yes
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VT8231 0x8235 no?
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VT8233 0x3074 yes
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VT8233A 0x3147 yes?
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VT8235 0x3177 yes
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VT8237R 0x3227 yes
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2006-09-04 04:35:21 +08:00
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VT8237A 0x3337 yes
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2008-01-28 01:14:51 +08:00
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VT8237S 0x3372 yes
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2006-09-04 04:35:21 +08:00
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VT8251 0x3287 yes
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2007-02-14 05:09:02 +08:00
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CX700 0x8324 yes
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2008-10-14 23:30:03 +08:00
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VX800/VX820 0x8353 yes
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2009-06-16 00:01:49 +08:00
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VX855/VX875 0x8409 yes
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2005-09-23 04:09:07 +08:00
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2005-04-17 06:20:36 +08:00
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Note: we assume there can only be one device, with one SMBus interface.
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*/
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#include <linux/module.h>
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#include <linux/delay.h>
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#include <linux/pci.h>
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#include <linux/kernel.h>
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#include <linux/stddef.h>
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#include <linux/ioport.h>
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#include <linux/i2c.h>
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#include <linux/init.h>
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2008-07-15 04:38:33 +08:00
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#include <linux/acpi.h>
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2010-05-22 00:41:01 +08:00
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#include <linux/io.h>
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2005-04-17 06:20:36 +08:00
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static struct pci_dev *vt596_pdev;
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2005-09-23 03:50:47 +08:00
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#define SMBBA1 0x90
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#define SMBBA2 0x80
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#define SMBBA3 0xD0
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2005-04-17 06:20:36 +08:00
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/* SMBus address offsets */
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static unsigned short vt596_smba;
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#define SMBHSTSTS (vt596_smba + 0)
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#define SMBHSTCNT (vt596_smba + 2)
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#define SMBHSTCMD (vt596_smba + 3)
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#define SMBHSTADD (vt596_smba + 4)
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#define SMBHSTDAT0 (vt596_smba + 5)
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#define SMBHSTDAT1 (vt596_smba + 6)
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#define SMBBLKDAT (vt596_smba + 7)
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/* PCI Address Constants */
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/* SMBus data in configuration space can be found in two places,
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2005-09-23 03:50:47 +08:00
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We try to select the better one */
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2005-04-17 06:20:36 +08:00
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2005-09-23 04:01:07 +08:00
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static unsigned short SMBHSTCFG = 0xD2;
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2005-04-17 06:20:36 +08:00
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/* Other settings */
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#define MAX_TIMEOUT 500
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/* VT82C596 constants */
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2005-09-23 03:50:47 +08:00
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#define VT596_QUICK 0x00
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#define VT596_BYTE 0x04
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#define VT596_BYTE_DATA 0x08
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#define VT596_WORD_DATA 0x0C
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2008-10-14 23:30:06 +08:00
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#define VT596_PROC_CALL 0x10
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2005-09-23 03:50:47 +08:00
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#define VT596_BLOCK_DATA 0x14
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2005-09-23 03:58:41 +08:00
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#define VT596_I2C_BLOCK_DATA 0x34
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2005-04-17 06:20:36 +08:00
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/* If force is set to anything different from 0, we forcibly enable the
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VT596. DANGEROUS! */
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static int force;
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module_param(force, bool, 0);
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MODULE_PARM_DESC(force, "Forcibly enable the SMBus. DANGEROUS!");
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/* If force_addr is set to anything different from 0, we forcibly enable
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the VT596 at the given address. VERY DANGEROUS! */
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static u16 force_addr;
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module_param(force_addr, ushort, 0);
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MODULE_PARM_DESC(force_addr,
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"Forcibly enable the SMBus at the given address. "
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"EXTREMELY DANGEROUS!");
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2005-09-23 04:01:07 +08:00
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static struct pci_driver vt596_driver;
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2005-04-17 06:20:36 +08:00
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static struct i2c_adapter vt596_adapter;
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2005-09-23 03:58:41 +08:00
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#define FEATURE_I2CBLOCK (1<<0)
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static unsigned int vt596_features;
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2005-09-23 04:23:32 +08:00
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#ifdef DEBUG
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static void vt596_dump_regs(const char *msg, u8 size)
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{
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dev_dbg(&vt596_adapter.dev, "%s: STS=%02x CNT=%02x CMD=%02x ADD=%02x "
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"DAT=%02x,%02x\n", msg, inb_p(SMBHSTSTS), inb_p(SMBHSTCNT),
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inb_p(SMBHSTCMD), inb_p(SMBHSTADD), inb_p(SMBHSTDAT0),
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inb_p(SMBHSTDAT1));
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if (size == VT596_BLOCK_DATA
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|| size == VT596_I2C_BLOCK_DATA) {
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int i;
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dev_dbg(&vt596_adapter.dev, "BLK=");
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for (i = 0; i < I2C_SMBUS_BLOCK_MAX / 2; i++)
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printk("%02x,", inb_p(SMBBLKDAT));
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printk("\n");
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dev_dbg(&vt596_adapter.dev, " ");
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for (; i < I2C_SMBUS_BLOCK_MAX - 1; i++)
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printk("%02x,", inb_p(SMBBLKDAT));
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printk("%02x\n", inb_p(SMBBLKDAT));
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}
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}
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2005-09-23 04:23:32 +08:00
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#else
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static inline void vt596_dump_regs(const char *msg, u8 size) { }
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2005-09-23 04:23:32 +08:00
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#endif
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2005-09-23 04:01:07 +08:00
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/* Return -1 on error, 0 on success */
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2005-09-23 04:15:53 +08:00
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static int vt596_transaction(u8 size)
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2005-04-17 06:20:36 +08:00
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{
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int temp;
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int result = 0;
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int timeout = 0;
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2005-09-23 04:23:32 +08:00
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vt596_dump_regs("Transaction (pre)", size);
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2005-04-17 06:20:36 +08:00
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/* Make sure the SMBus host is ready to start transmitting */
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if ((temp = inb_p(SMBHSTSTS)) & 0x1F) {
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dev_dbg(&vt596_adapter.dev, "SMBus busy (0x%02x). "
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2005-11-01 01:51:21 +08:00
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"Resetting...\n", temp);
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2005-09-23 03:50:47 +08:00
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2005-04-17 06:20:36 +08:00
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outb_p(temp, SMBHSTSTS);
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if ((temp = inb_p(SMBHSTSTS)) & 0x1F) {
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2005-11-01 01:51:21 +08:00
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dev_err(&vt596_adapter.dev, "SMBus reset failed! "
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"(0x%02x)\n", temp);
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2008-07-15 04:38:25 +08:00
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return -EBUSY;
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2005-04-17 06:20:36 +08:00
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}
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}
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2005-09-23 04:01:07 +08:00
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/* Start the transaction by setting bit 6 */
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2005-11-01 01:51:21 +08:00
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outb_p(0x40 | size, SMBHSTCNT);
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2005-04-17 06:20:36 +08:00
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2005-09-23 04:01:07 +08:00
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/* We will always wait for a fraction of a second */
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2005-04-17 06:20:36 +08:00
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do {
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msleep(1);
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temp = inb_p(SMBHSTSTS);
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2010-01-17 03:43:12 +08:00
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} while ((temp & 0x01) && (++timeout < MAX_TIMEOUT));
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2005-04-17 06:20:36 +08:00
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/* If the SMBus is still busy, we give up */
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2010-01-17 03:43:12 +08:00
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if (timeout == MAX_TIMEOUT) {
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2008-07-15 04:38:25 +08:00
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result = -ETIMEDOUT;
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2005-09-23 04:01:07 +08:00
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dev_err(&vt596_adapter.dev, "SMBus timeout!\n");
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2005-04-17 06:20:36 +08:00
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}
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if (temp & 0x10) {
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2008-07-15 04:38:25 +08:00
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result = -EIO;
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2005-09-23 04:01:07 +08:00
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dev_err(&vt596_adapter.dev, "Transaction failed (0x%02x)\n",
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2005-11-01 01:51:21 +08:00
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size);
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2005-04-17 06:20:36 +08:00
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}
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if (temp & 0x08) {
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2008-07-15 04:38:25 +08:00
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result = -EIO;
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2005-09-23 04:01:07 +08:00
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dev_err(&vt596_adapter.dev, "SMBus collision!\n");
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2005-04-17 06:20:36 +08:00
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}
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if (temp & 0x04) {
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2008-07-15 04:38:25 +08:00
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result = -ENXIO;
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2010-10-25 00:16:59 +08:00
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dev_dbg(&vt596_adapter.dev, "No response\n");
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2005-04-17 06:20:36 +08:00
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}
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2005-09-23 04:01:07 +08:00
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/* Resetting status register */
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if (temp & 0x1F)
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2005-04-17 06:20:36 +08:00
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outb_p(temp, SMBHSTSTS);
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2005-09-23 04:23:32 +08:00
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vt596_dump_regs("Transaction (post)", size);
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2005-09-23 03:50:47 +08:00
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2005-04-17 06:20:36 +08:00
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return result;
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}
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2008-07-15 04:38:25 +08:00
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/* Return negative errno on error, 0 on success */
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2005-04-17 06:20:36 +08:00
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static s32 vt596_access(struct i2c_adapter *adap, u16 addr,
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2005-09-23 03:50:47 +08:00
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unsigned short flags, char read_write, u8 command,
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int size, union i2c_smbus_data *data)
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2005-04-17 06:20:36 +08:00
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{
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2005-09-23 04:01:07 +08:00
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int i;
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2008-07-15 04:38:25 +08:00
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int status;
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2005-04-17 06:20:36 +08:00
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switch (size) {
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case I2C_SMBUS_QUICK:
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size = VT596_QUICK;
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break;
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case I2C_SMBUS_BYTE:
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if (read_write == I2C_SMBUS_WRITE)
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outb_p(command, SMBHSTCMD);
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size = VT596_BYTE;
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break;
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case I2C_SMBUS_BYTE_DATA:
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outb_p(command, SMBHSTCMD);
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if (read_write == I2C_SMBUS_WRITE)
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outb_p(data->byte, SMBHSTDAT0);
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size = VT596_BYTE_DATA;
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break;
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case I2C_SMBUS_WORD_DATA:
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outb_p(command, SMBHSTCMD);
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if (read_write == I2C_SMBUS_WRITE) {
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outb_p(data->word & 0xff, SMBHSTDAT0);
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outb_p((data->word & 0xff00) >> 8, SMBHSTDAT1);
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}
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size = VT596_WORD_DATA;
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break;
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2008-10-14 23:30:06 +08:00
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case I2C_SMBUS_PROC_CALL:
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outb_p(command, SMBHSTCMD);
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outb_p(data->word & 0xff, SMBHSTDAT0);
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outb_p((data->word & 0xff00) >> 8, SMBHSTDAT1);
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size = VT596_PROC_CALL;
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break;
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2005-09-23 03:58:41 +08:00
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case I2C_SMBUS_I2C_BLOCK_DATA:
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if (!(vt596_features & FEATURE_I2CBLOCK))
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2005-09-23 04:01:07 +08:00
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goto exit_unsupported;
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2005-09-23 03:58:41 +08:00
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if (read_write == I2C_SMBUS_READ)
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i2c: Fix the i2c_smbus_read_i2c_block_data() prototype
Let the drivers specify how many bytes they want to read with
i2c_smbus_read_i2c_block_data(). So far, the block count was
hard-coded to I2C_SMBUS_BLOCK_MAX (32), which did not make much sense.
Many driver authors complained about this before, and I believe it's
about time to fix it. Right now, authors have to do technically stupid
things, such as individual byte reads or full-fledged I2C messaging,
to work around the problem. We do not want to encourage that.
I even found that some bus drivers (e.g. i2c-amd8111) already
implemented I2C block read the "right" way, that is, they didn't
follow the old, broken standard. The fact that it was never noticed
before just shows how little i2c_smbus_read_i2c_block_data() was used,
which isn't that surprising given how broken its prototype was so far.
There are some obvious compatiblity considerations:
* This changes the i2c_smbus_read_i2c_block_data() prototype. Users
outside the kernel tree will notice at compilation time, and will
have to update their code.
* User-space has access to i2c_smbus_xfer() directly using i2c-dev, so
the changed expectations would affect tools such as i2cdump. In order
to preserve binary compatibility, we give I2C_SMBUS_I2C_BLOCK_DATA
a new numeric value, and define I2C_SMBUS_I2C_BLOCK_BROKEN with the
old numeric value. When i2c-dev receives a transaction with the
old value, it can convert it to the new format on the fly.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-07-12 20:12:29 +08:00
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outb_p(data->block[0], SMBHSTDAT0);
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2005-09-23 03:58:41 +08:00
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/* Fall through */
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2005-04-17 06:20:36 +08:00
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case I2C_SMBUS_BLOCK_DATA:
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outb_p(command, SMBHSTCMD);
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if (read_write == I2C_SMBUS_WRITE) {
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2005-09-23 04:01:07 +08:00
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u8 len = data->block[0];
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2005-04-17 06:20:36 +08:00
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if (len > I2C_SMBUS_BLOCK_MAX)
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len = I2C_SMBUS_BLOCK_MAX;
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outb_p(len, SMBHSTDAT0);
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2005-09-23 04:01:07 +08:00
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inb_p(SMBHSTCNT); /* Reset SMBBLKDAT */
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2005-04-17 06:20:36 +08:00
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for (i = 1; i <= len; i++)
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outb_p(data->block[i], SMBBLKDAT);
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}
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2005-09-23 03:58:41 +08:00
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size = (size == I2C_SMBUS_I2C_BLOCK_DATA) ?
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VT596_I2C_BLOCK_DATA : VT596_BLOCK_DATA;
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2005-04-17 06:20:36 +08:00
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break;
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2005-09-23 04:01:07 +08:00
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default:
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goto exit_unsupported;
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2005-04-17 06:20:36 +08:00
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}
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2005-09-23 04:01:07 +08:00
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outb_p(((addr & 0x7f) << 1) | read_write, SMBHSTADD);
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2005-04-17 06:20:36 +08:00
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2008-07-15 04:38:25 +08:00
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status = vt596_transaction(size);
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if (status)
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return status;
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2005-04-17 06:20:36 +08:00
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2008-10-14 23:30:06 +08:00
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|
|
if (size == VT596_PROC_CALL)
|
|
|
|
read_write = I2C_SMBUS_READ;
|
|
|
|
|
2005-04-17 06:20:36 +08:00
|
|
|
if ((read_write == I2C_SMBUS_WRITE) || (size == VT596_QUICK))
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
switch (size) {
|
|
|
|
case VT596_BYTE:
|
|
|
|
case VT596_BYTE_DATA:
|
|
|
|
data->byte = inb_p(SMBHSTDAT0);
|
|
|
|
break;
|
|
|
|
case VT596_WORD_DATA:
|
2008-10-14 23:30:06 +08:00
|
|
|
case VT596_PROC_CALL:
|
2005-04-17 06:20:36 +08:00
|
|
|
data->word = inb_p(SMBHSTDAT0) + (inb_p(SMBHSTDAT1) << 8);
|
|
|
|
break;
|
2005-09-23 03:58:41 +08:00
|
|
|
case VT596_I2C_BLOCK_DATA:
|
2005-04-17 06:20:36 +08:00
|
|
|
case VT596_BLOCK_DATA:
|
|
|
|
data->block[0] = inb_p(SMBHSTDAT0);
|
|
|
|
if (data->block[0] > I2C_SMBUS_BLOCK_MAX)
|
|
|
|
data->block[0] = I2C_SMBUS_BLOCK_MAX;
|
2005-09-23 04:01:07 +08:00
|
|
|
inb_p(SMBHSTCNT); /* Reset SMBBLKDAT */
|
2005-04-17 06:20:36 +08:00
|
|
|
for (i = 1; i <= data->block[0]; i++)
|
|
|
|
data->block[i] = inb_p(SMBBLKDAT);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
return 0;
|
2005-09-23 04:01:07 +08:00
|
|
|
|
|
|
|
exit_unsupported:
|
2008-07-15 04:38:25 +08:00
|
|
|
dev_warn(&vt596_adapter.dev, "Unsupported transaction %d\n",
|
2005-09-23 04:01:07 +08:00
|
|
|
size);
|
2008-07-15 04:38:25 +08:00
|
|
|
return -EOPNOTSUPP;
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
static u32 vt596_func(struct i2c_adapter *adapter)
|
|
|
|
{
|
2005-09-23 03:58:41 +08:00
|
|
|
u32 func = I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE |
|
2005-04-17 06:20:36 +08:00
|
|
|
I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA |
|
2008-10-14 23:30:06 +08:00
|
|
|
I2C_SMBUS_PROC_CALL | I2C_FUNC_SMBUS_BLOCK_DATA;
|
2005-09-23 03:58:41 +08:00
|
|
|
|
|
|
|
if (vt596_features & FEATURE_I2CBLOCK)
|
|
|
|
func |= I2C_FUNC_SMBUS_I2C_BLOCK;
|
|
|
|
return func;
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
2006-09-04 04:39:46 +08:00
|
|
|
static const struct i2c_algorithm smbus_algorithm = {
|
2005-04-17 06:20:36 +08:00
|
|
|
.smbus_xfer = vt596_access,
|
|
|
|
.functionality = vt596_func,
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct i2c_adapter vt596_adapter = {
|
|
|
|
.owner = THIS_MODULE,
|
2008-07-15 04:38:29 +08:00
|
|
|
.class = I2C_CLASS_HWMON | I2C_CLASS_SPD,
|
2005-04-17 06:20:36 +08:00
|
|
|
.algo = &smbus_algorithm,
|
|
|
|
};
|
|
|
|
|
|
|
|
static int __devinit vt596_probe(struct pci_dev *pdev,
|
|
|
|
const struct pci_device_id *id)
|
|
|
|
{
|
|
|
|
unsigned char temp;
|
2012-01-13 03:32:03 +08:00
|
|
|
int error;
|
2005-09-23 03:50:47 +08:00
|
|
|
|
2005-04-17 06:20:36 +08:00
|
|
|
/* Determine the address of the SMBus areas */
|
|
|
|
if (force_addr) {
|
|
|
|
vt596_smba = force_addr & 0xfff0;
|
|
|
|
force = 0;
|
|
|
|
goto found;
|
|
|
|
}
|
|
|
|
|
|
|
|
if ((pci_read_config_word(pdev, id->driver_data, &vt596_smba)) ||
|
2005-09-23 04:01:07 +08:00
|
|
|
!(vt596_smba & 0x0001)) {
|
2005-04-17 06:20:36 +08:00
|
|
|
/* try 2nd address and config reg. for 596 */
|
|
|
|
if (id->device == PCI_DEVICE_ID_VIA_82C596_3 &&
|
|
|
|
!pci_read_config_word(pdev, SMBBA2, &vt596_smba) &&
|
2005-09-23 04:01:07 +08:00
|
|
|
(vt596_smba & 0x0001)) {
|
|
|
|
SMBHSTCFG = 0x84;
|
2005-04-17 06:20:36 +08:00
|
|
|
} else {
|
|
|
|
/* no matches at all */
|
|
|
|
dev_err(&pdev->dev, "Cannot configure "
|
|
|
|
"SMBus I/O Base address\n");
|
|
|
|
return -ENODEV;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
vt596_smba &= 0xfff0;
|
|
|
|
if (vt596_smba == 0) {
|
|
|
|
dev_err(&pdev->dev, "SMBus base address "
|
|
|
|
"uninitialized - upgrade BIOS or use "
|
|
|
|
"force_addr=0xaddr\n");
|
|
|
|
return -ENODEV;
|
|
|
|
}
|
|
|
|
|
2005-09-23 03:50:47 +08:00
|
|
|
found:
|
2008-07-15 04:38:33 +08:00
|
|
|
error = acpi_check_region(vt596_smba, 8, vt596_driver.name);
|
|
|
|
if (error)
|
2009-10-05 04:53:45 +08:00
|
|
|
return -ENODEV;
|
2008-07-15 04:38:33 +08:00
|
|
|
|
2005-09-23 04:01:07 +08:00
|
|
|
if (!request_region(vt596_smba, 8, vt596_driver.name)) {
|
2005-04-17 06:20:36 +08:00
|
|
|
dev_err(&pdev->dev, "SMBus region 0x%x already in use!\n",
|
2005-09-23 03:50:47 +08:00
|
|
|
vt596_smba);
|
2005-04-17 06:20:36 +08:00
|
|
|
return -ENODEV;
|
|
|
|
}
|
|
|
|
|
|
|
|
pci_read_config_byte(pdev, SMBHSTCFG, &temp);
|
|
|
|
/* If force_addr is set, we program the new address here. Just to make
|
|
|
|
sure, we disable the VT596 first. */
|
|
|
|
if (force_addr) {
|
|
|
|
pci_write_config_byte(pdev, SMBHSTCFG, temp & 0xfe);
|
|
|
|
pci_write_config_word(pdev, id->driver_data, vt596_smba);
|
|
|
|
pci_write_config_byte(pdev, SMBHSTCFG, temp | 0x01);
|
|
|
|
dev_warn(&pdev->dev, "WARNING: SMBus interface set to new "
|
2005-09-23 03:50:47 +08:00
|
|
|
"address 0x%04x!\n", vt596_smba);
|
2005-09-23 04:01:07 +08:00
|
|
|
} else if (!(temp & 0x01)) {
|
2005-04-17 06:20:36 +08:00
|
|
|
if (force) {
|
2005-09-23 03:50:47 +08:00
|
|
|
/* NOTE: This assumes I/O space and other allocations
|
|
|
|
* WERE done by the Bios! Don't complain if your
|
|
|
|
* hardware does weird things after enabling this.
|
|
|
|
* :') Check for Bios updates before resorting to
|
2005-04-17 06:20:36 +08:00
|
|
|
* this.
|
|
|
|
*/
|
2005-09-23 04:01:07 +08:00
|
|
|
pci_write_config_byte(pdev, SMBHSTCFG, temp | 0x01);
|
2005-04-17 06:20:36 +08:00
|
|
|
dev_info(&pdev->dev, "Enabling SMBus device\n");
|
|
|
|
} else {
|
|
|
|
dev_err(&pdev->dev, "SMBUS: Error: Host SMBus "
|
|
|
|
"controller not enabled! - upgrade BIOS or "
|
|
|
|
"use force=1\n");
|
2012-01-13 03:32:03 +08:00
|
|
|
error = -ENODEV;
|
2005-04-17 06:20:36 +08:00
|
|
|
goto release_region;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
dev_dbg(&pdev->dev, "VT596_smba = 0x%X\n", vt596_smba);
|
|
|
|
|
2005-09-23 03:58:41 +08:00
|
|
|
switch (pdev->device) {
|
2007-02-14 05:09:02 +08:00
|
|
|
case PCI_DEVICE_ID_VIA_CX700:
|
2008-10-14 23:30:03 +08:00
|
|
|
case PCI_DEVICE_ID_VIA_VX800:
|
2009-06-16 00:01:49 +08:00
|
|
|
case PCI_DEVICE_ID_VIA_VX855:
|
2006-09-04 04:35:21 +08:00
|
|
|
case PCI_DEVICE_ID_VIA_8251:
|
2005-09-23 03:58:41 +08:00
|
|
|
case PCI_DEVICE_ID_VIA_8237:
|
2006-09-04 04:35:21 +08:00
|
|
|
case PCI_DEVICE_ID_VIA_8237A:
|
2008-01-28 01:14:51 +08:00
|
|
|
case PCI_DEVICE_ID_VIA_8237S:
|
2005-09-23 03:58:41 +08:00
|
|
|
case PCI_DEVICE_ID_VIA_8235:
|
|
|
|
case PCI_DEVICE_ID_VIA_8233A:
|
|
|
|
case PCI_DEVICE_ID_VIA_8233_0:
|
|
|
|
vt596_features |= FEATURE_I2CBLOCK;
|
|
|
|
break;
|
|
|
|
case PCI_DEVICE_ID_VIA_82C686_4:
|
|
|
|
/* The VT82C686B (rev 0x40) does support I2C block
|
|
|
|
transactions, but the VT82C686A (rev 0x30) doesn't */
|
2007-06-09 06:46:36 +08:00
|
|
|
if (pdev->revision >= 0x40)
|
2005-09-23 03:58:41 +08:00
|
|
|
vt596_features |= FEATURE_I2CBLOCK;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2005-04-17 06:20:36 +08:00
|
|
|
vt596_adapter.dev.parent = &pdev->dev;
|
2007-05-02 05:26:28 +08:00
|
|
|
snprintf(vt596_adapter.name, sizeof(vt596_adapter.name),
|
2005-09-23 03:50:47 +08:00
|
|
|
"SMBus Via Pro adapter at %04x", vt596_smba);
|
|
|
|
|
2005-04-17 06:20:36 +08:00
|
|
|
vt596_pdev = pci_dev_get(pdev);
|
2012-01-13 03:32:03 +08:00
|
|
|
error = i2c_add_adapter(&vt596_adapter);
|
|
|
|
if (error) {
|
2005-04-17 06:20:36 +08:00
|
|
|
pci_dev_put(vt596_pdev);
|
|
|
|
vt596_pdev = NULL;
|
2012-01-13 03:32:03 +08:00
|
|
|
goto release_region;
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
/* 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;
|
|
|
|
|
2005-09-23 03:50:47 +08:00
|
|
|
release_region:
|
2005-04-17 06:20:36 +08:00
|
|
|
release_region(vt596_smba, 8);
|
|
|
|
return error;
|
|
|
|
}
|
|
|
|
|
2010-03-02 19:23:37 +08:00
|
|
|
static const struct pci_device_id vt596_ids[] = {
|
2005-04-17 06:20:36 +08:00
|
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C596_3),
|
|
|
|
.driver_data = SMBBA1 },
|
|
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C596B_3),
|
|
|
|
.driver_data = SMBBA1 },
|
|
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4),
|
|
|
|
.driver_data = SMBBA1 },
|
|
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233_0),
|
|
|
|
.driver_data = SMBBA3 },
|
|
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233A),
|
|
|
|
.driver_data = SMBBA3 },
|
|
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235),
|
|
|
|
.driver_data = SMBBA3 },
|
|
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237),
|
|
|
|
.driver_data = SMBBA3 },
|
2006-09-04 04:35:21 +08:00
|
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237A),
|
|
|
|
.driver_data = SMBBA3 },
|
2008-01-28 01:14:51 +08:00
|
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237S),
|
|
|
|
.driver_data = SMBBA3 },
|
2005-04-17 06:20:36 +08:00
|
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231_4),
|
|
|
|
.driver_data = SMBBA1 },
|
2006-09-04 04:35:21 +08:00
|
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8251),
|
|
|
|
.driver_data = SMBBA3 },
|
2007-02-14 05:09:02 +08:00
|
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_CX700),
|
|
|
|
.driver_data = SMBBA3 },
|
2008-10-14 23:30:03 +08:00
|
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VX800),
|
|
|
|
.driver_data = SMBBA3 },
|
2009-06-16 00:01:49 +08:00
|
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VX855),
|
|
|
|
.driver_data = SMBBA3 },
|
2005-04-17 06:20:36 +08:00
|
|
|
{ 0, }
|
|
|
|
};
|
|
|
|
|
2005-09-23 03:50:47 +08:00
|
|
|
MODULE_DEVICE_TABLE(pci, vt596_ids);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
static struct pci_driver vt596_driver = {
|
|
|
|
.name = "vt596_smbus",
|
|
|
|
.id_table = vt596_ids,
|
|
|
|
.probe = vt596_probe,
|
|
|
|
};
|
|
|
|
|
|
|
|
static int __init i2c_vt596_init(void)
|
|
|
|
{
|
|
|
|
return pci_register_driver(&vt596_driver);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static void __exit i2c_vt596_exit(void)
|
|
|
|
{
|
|
|
|
pci_unregister_driver(&vt596_driver);
|
|
|
|
if (vt596_pdev != NULL) {
|
|
|
|
i2c_del_adapter(&vt596_adapter);
|
|
|
|
release_region(vt596_smba, 8);
|
|
|
|
pci_dev_put(vt596_pdev);
|
|
|
|
vt596_pdev = NULL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2005-11-01 01:51:21 +08:00
|
|
|
MODULE_AUTHOR("Kyosti Malkki <kmalkki@cc.hut.fi>, "
|
|
|
|
"Mark D. Studebaker <mdsxyz123@yahoo.com> and "
|
|
|
|
"Jean Delvare <khali@linux-fr.org>");
|
2005-04-17 06:20:36 +08:00
|
|
|
MODULE_DESCRIPTION("vt82c596 SMBus driver");
|
|
|
|
MODULE_LICENSE("GPL");
|
|
|
|
|
|
|
|
module_init(i2c_vt596_init);
|
|
|
|
module_exit(i2c_vt596_exit);
|