Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/i2c/busses/i2c-stub.c b/drivers/i2c/busses/i2c-stub.c
new file mode 100644
index 0000000..19c805e
--- /dev/null
+++ b/drivers/i2c/busses/i2c-stub.c
@@ -0,0 +1,143 @@
+/*
+ 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/config.h>
+#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 = {
+ .name = "Non-I2C SMBus adapter",
+ .id = I2C_ALGO_SMBUS,
+ .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);
+