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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 420 | giacomo | 1 | /* |
| 2 | i2c-isa.c - Part of lm_sensors, Linux kernel modules for hardware |
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| 3 | monitoring |
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| 4 | Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl> |
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| 5 | |||
| 6 | This program is free software; you can redistribute it and/or modify |
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| 7 | it under the terms of the GNU General Public License as published by |
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| 8 | the Free Software Foundation; either version 2 of the License, or |
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| 9 | (at your option) any later version. |
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| 10 | |||
| 11 | This program is distributed in the hope that it will be useful, |
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| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 14 | GNU General Public License for more details. |
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| 15 | |||
| 16 | You should have received a copy of the GNU General Public License |
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| 17 | along with this program; if not, write to the Free Software |
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| 18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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| 19 | */ |
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| 20 | |||
| 21 | /* This implements an i2c algorithm/adapter for ISA bus. Not that this is |
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| 22 | on first sight very useful; almost no functionality is preserved. |
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| 23 | Except that it makes writing drivers for chips which can be on both |
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| 24 | the SMBus and the ISA bus very much easier. See lm78.c for an example |
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| 25 | of this. */ |
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| 26 | |||
| 27 | #include <linux/init.h> |
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| 28 | #include <linux/module.h> |
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| 29 | #include <linux/kernel.h> |
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| 30 | #include <linux/errno.h> |
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| 31 | #include <linux/i2c.h> |
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| 32 | |||
| 33 | static u32 isa_func(struct i2c_adapter *adapter); |
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| 34 | |||
| 35 | /* This is the actual algorithm we define */ |
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| 36 | static struct i2c_algorithm isa_algorithm = { |
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| 37 | .name = "ISA bus algorithm", |
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| 38 | .id = I2C_ALGO_ISA, |
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| 39 | .functionality = isa_func, |
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| 40 | }; |
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| 41 | |||
| 42 | /* There can only be one... */ |
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| 43 | static struct i2c_adapter isa_adapter = { |
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| 44 | .owner = THIS_MODULE, |
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| 45 | .class = I2C_ADAP_CLASS_SMBUS, |
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| 46 | .algo = &isa_algorithm, |
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| 47 | .name = "ISA main adapter", |
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| 48 | }; |
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| 49 | |||
| 50 | /* We can't do a thing... */ |
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| 51 | static u32 isa_func(struct i2c_adapter *adapter) |
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| 52 | { |
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| 53 | return 0; |
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| 54 | } |
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| 55 | |||
| 56 | static int __init i2c_isa_init(void) |
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| 57 | { |
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| 58 | return i2c_add_adapter(&isa_adapter); |
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| 59 | } |
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| 60 | |||
| 61 | static void __exit i2c_isa_exit(void) |
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| 62 | { |
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| 63 | i2c_del_adapter(&isa_adapter); |
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| 64 | } |
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| 65 | |||
| 66 | MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>"); |
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| 67 | MODULE_DESCRIPTION("ISA bus access through i2c"); |
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| 68 | MODULE_LICENSE("GPL"); |
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| 69 | |||
| 70 | module_init(i2c_isa_init); |
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| 71 | module_exit(i2c_isa_exit); |