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72 lines
2.1 KiB
72 lines
2.1 KiB
20 years ago
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/*
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i2c-isa.c - Part of lm_sensors, Linux kernel modules for hardware
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monitoring
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Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl>
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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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/* This implements an i2c algorithm/adapter for ISA bus. Not that this is
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on first sight very useful; almost no functionality is preserved.
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Except that it makes writing drivers for chips which can be on both
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the SMBus and the ISA bus very much easier. See lm78.c for an example
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of this. */
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/i2c.h>
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static u32 isa_func(struct i2c_adapter *adapter);
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/* This is the actual algorithm we define */
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static struct i2c_algorithm isa_algorithm = {
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.name = "ISA bus algorithm",
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.id = I2C_ALGO_ISA,
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.functionality = isa_func,
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};
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/* There can only be one... */
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static struct i2c_adapter isa_adapter = {
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.owner = THIS_MODULE,
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.class = I2C_CLASS_HWMON,
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.algo = &isa_algorithm,
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.name = "ISA main adapter",
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};
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/* We can't do a thing... */
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static u32 isa_func(struct i2c_adapter *adapter)
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{
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return 0;
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}
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static int __init i2c_isa_init(void)
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{
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return i2c_add_adapter(&isa_adapter);
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}
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static void __exit i2c_isa_exit(void)
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{
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i2c_del_adapter(&isa_adapter);
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}
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MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>");
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MODULE_DESCRIPTION("ISA bus access through i2c");
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MODULE_LICENSE("GPL");
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module_init(i2c_isa_init);
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module_exit(i2c_isa_exit);
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