diff options
Diffstat (limited to 'drivers/i2c/busses/i2c-stub.c')
| -rw-r--r-- | drivers/i2c/busses/i2c-stub.c | 140 |
1 files changed, 0 insertions, 140 deletions
diff --git a/drivers/i2c/busses/i2c-stub.c b/drivers/i2c/busses/i2c-stub.c deleted file mode 100644 index 73f481e93a3..00000000000 --- a/drivers/i2c/busses/i2c-stub.c +++ /dev/null @@ -1,140 +0,0 @@ -/* - i2c-stub.c - Part of lm_sensors, Linux kernel modules for hardware - monitoring - - Copyright (c) 2004 Mark M. Hoffman <mhoffman@lightlink.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. -*/ - -#define DEBUG 1 - -#include <linux/init.h> -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/errno.h> -#include <linux/i2c.h> - -static u8 stub_pointer; -static u8 stub_bytes[256]; -static u16 stub_words[256]; - -/* Return -1 on error. */ -static s32 stub_xfer(struct i2c_adapter * adap, u16 addr, unsigned short flags, - char read_write, u8 command, int size, union i2c_smbus_data * data) -{ - s32 ret; - - switch (size) { - - case I2C_SMBUS_QUICK: - dev_dbg(&adap->dev, "smbus quick - addr 0x%02x\n", addr); - ret = 0; - break; - - case I2C_SMBUS_BYTE: - if (read_write == I2C_SMBUS_WRITE) { - stub_pointer = command; - dev_dbg(&adap->dev, "smbus byte - addr 0x%02x, " - "wrote 0x%02x.\n", - addr, command); - } else { - data->byte = stub_bytes[stub_pointer++]; - dev_dbg(&adap->dev, "smbus byte - addr 0x%02x, " - "read 0x%02x.\n", - addr, data->byte); - } - - ret = 0; - break; - - case I2C_SMBUS_BYTE_DATA: - if (read_write == I2C_SMBUS_WRITE) { - stub_bytes[command] = data->byte; - dev_dbg(&adap->dev, "smbus byte data - addr 0x%02x, " - "wrote 0x%02x at 0x%02x.\n", - addr, data->byte, command); - } else { - data->byte = stub_bytes[command]; - dev_dbg(&adap->dev, "smbus byte data - addr 0x%02x, " - "read 0x%02x at 0x%02x.\n", - addr, data->byte, command); - } - stub_pointer = command + 1; - - ret = 0; - break; - - case I2C_SMBUS_WORD_DATA: - if (read_write == I2C_SMBUS_WRITE) { - stub_words[command] = data->word; - dev_dbg(&adap->dev, "smbus word data - addr 0x%02x, " - "wrote 0x%04x at 0x%02x.\n", - addr, data->word, command); - } else { - data->word = stub_words[command]; - dev_dbg(&adap->dev, "smbus word data - addr 0x%02x, " - "read 0x%04x at 0x%02x.\n", - addr, data->word, command); - } - - ret = 0; - break; - - default: - dev_dbg(&adap->dev, "Unsupported I2C/SMBus command\n"); - ret = -1; - break; - } /* switch (size) */ - - return ret; -} - -static u32 stub_func(struct i2c_adapter *adapter) -{ - return I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE | - I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA; -} - -static struct i2c_algorithm smbus_algorithm = { - .functionality = stub_func, - .smbus_xfer = stub_xfer, -}; - -static struct i2c_adapter stub_adapter = { - .owner = THIS_MODULE, - .class = I2C_CLASS_HWMON, - .algo = &smbus_algorithm, - .name = "SMBus stub driver", -}; - -static int __init i2c_stub_init(void) -{ - printk(KERN_INFO "i2c-stub loaded\n"); - return i2c_add_adapter(&stub_adapter); -} - -static void __exit i2c_stub_exit(void) -{ - i2c_del_adapter(&stub_adapter); -} - -MODULE_AUTHOR("Mark M. Hoffman <mhoffman@lightlink.com>"); -MODULE_DESCRIPTION("I2C stub driver"); -MODULE_LICENSE("GPL"); - -module_init(i2c_stub_init); -module_exit(i2c_stub_exit); - |