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/*
* Custom GPIO-based I2C driver
*
* Copyright (C) 2007 Gabor Juhos <juhosg at openwrt.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/i2c-gpio.h>
#define DRV_NAME "i2c-gpio-custom"
#define DRV_DESC "Custom GPIO I2C device driver"
static unsigned int sda = CONFIG_I2C_GPIO_CUSTOM_SDA;
static unsigned int scl = CONFIG_I2C_GPIO_CUSTOM_SCL;
static int id = CONFIG_I2C_GPIO_CUSTOM_DEVICE_ID;
module_param(sda, uint, S_IRUGO);
MODULE_PARM_DESC(sda, "GPIO pin for SDA");
module_param(scl, uint, S_IRUGO);
MODULE_PARM_DESC(scl, "GPIO pin for SCL");
module_param(id, int, S_IRUGO);
MODULE_PARM_DESC(id, "device id of the i2c-gpio device");
static struct i2c_gpio_platform_data i2c_data;
static struct platform_device i2c_device;
static void i2c_gpio_custom_release(struct platform_device *pdev)
{
/* nothing to do */
}
static int __init i2c_gpio_custom_init(void)
{
int err;
i2c_data.sda_pin = sda;
i2c_data.scl_pin = scl;
i2c_device.name = "i2c-gpio";
i2c_device.id = id;
i2c_device.dev.platform_data = &i2c_data,
i2c_device.dev.release = i2c_gpio_custom_release,
err = platform_device_register(&i2c_device);
return err;
}
static void __exit i2c_gpio_custom_exit(void)
{
platform_device_unregister(&i2c_device);
}
module_init(i2c_gpio_custom_init);
module_exit(i2c_gpio_custom_exit);
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Gabor Juhos <juhosg at openwrt.org >");
MODULE_DESCRIPTION(DRV_DESC);
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