add Dallas's 1-wire related packages

SVN-Revision: 10977

1 files changed, 186 insertions, 0 deletions

diff --git a/target/linux/generic-2.6/patches-2.6.24/922-w1_gpio_driver_backport.patch b/target/linux/generic-2.6/patches-2.6.24/922-w1_gpio_driver_backport.patch
new file mode 100644
index 0000000000..414c8ab2c5
--- /dev/null
+++ b/target/linux/generic-2.6/patches-2.6.24/922-w1_gpio_driver_backport.patch
@@ -0,0 +1,186 @@
+Index: linux-2.6.24.5/drivers/w1/masters/Kconfig
+===================================================================
+--- linux-2.6.24.5.orig/drivers/w1/masters/Kconfig
++++ linux-2.6.24.5/drivers/w1/masters/Kconfig
+@@ -42,5 +42,15 @@ config W1_MASTER_DS1WM
+ 	  in HP iPAQ devices like h5xxx, h2200, and ASIC3-based like
+ 	  hx4700.
+ 
++config W1_MASTER_GPIO
++	tristate "GPIO 1-wire busmaster"
++	depends on GENERIC_GPIO
++	help
++	  Say Y here if you want to communicate with your 1-wire devices using
++	  GPIO pins. This driver uses the GPIO API to control the wire.
++
++	  This support is also available as a module.  If so, the module
++	  will be called w1-gpio.ko.
++
+ endmenu
+ 
+Index: linux-2.6.24.5/drivers/w1/masters/Makefile
+===================================================================
+--- linux-2.6.24.5.orig/drivers/w1/masters/Makefile
++++ linux-2.6.24.5/drivers/w1/masters/Makefile
+@@ -6,3 +6,4 @@ obj-$(CONFIG_W1_MASTER_MATROX)		+= matro
+ obj-$(CONFIG_W1_MASTER_DS2490)		+= ds2490.o
+ obj-$(CONFIG_W1_MASTER_DS2482)		+= ds2482.o
+ obj-$(CONFIG_W1_MASTER_DS1WM)		+= ds1wm.o
++obj-$(CONFIG_W1_MASTER_GPIO)		+= w1-gpio.o
+Index: linux-2.6.24.5/drivers/w1/masters/w1-gpio.c
+===================================================================
+--- /dev/null
++++ linux-2.6.24.5/drivers/w1/masters/w1-gpio.c
+@@ -0,0 +1,124 @@
++/*
++ * w1-gpio - GPIO w1 bus master driver
++ *
++ * Copyright (C) 2007 Ville Syrjala <syrjala@sci.fi>
++ *
++ * 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/init.h>
++#include <linux/module.h>
++#include <linux/platform_device.h>
++#include <linux/w1-gpio.h>
++
++#include "../w1.h"
++#include "../w1_int.h"
++
++#include <asm/gpio.h>
++
++static void w1_gpio_write_bit_dir(void *data, u8 bit)
++{
++	struct w1_gpio_platform_data *pdata = data;
++
++	if (bit)
++		gpio_direction_input(pdata->pin);
++	else
++		gpio_direction_output(pdata->pin, 0);
++}
++
++static void w1_gpio_write_bit_val(void *data, u8 bit)
++{
++	struct w1_gpio_platform_data *pdata = data;
++
++	gpio_set_value(pdata->pin, bit);
++}
++
++static u8 w1_gpio_read_bit(void *data)
++{
++	struct w1_gpio_platform_data *pdata = data;
++
++	return gpio_get_value(pdata->pin);
++}
++
++static int __init w1_gpio_probe(struct platform_device *pdev)
++{
++	struct w1_bus_master *master;
++	struct w1_gpio_platform_data *pdata = pdev->dev.platform_data;
++	int err;
++
++	if (!pdata)
++		return -ENXIO;
++
++	master = kzalloc(sizeof(struct w1_bus_master), GFP_KERNEL);
++	if (!master)
++		return -ENOMEM;
++
++	err = gpio_request(pdata->pin, "w1");
++	if (err)
++		goto free_master;
++
++	master->data = pdata;
++	master->read_bit = w1_gpio_read_bit;
++
++	if (pdata->is_open_drain) {
++		gpio_direction_output(pdata->pin, 1);
++		master->write_bit = w1_gpio_write_bit_val;
++	} else {
++		gpio_direction_input(pdata->pin);
++		master->write_bit = w1_gpio_write_bit_dir;
++	}
++
++	err = w1_add_master_device(master);
++	if (err)
++		goto free_gpio;
++
++	platform_set_drvdata(pdev, master);
++
++	return 0;
++
++ free_gpio:
++	gpio_free(pdata->pin);
++ free_master:
++	kfree(master);
++
++	return err;
++}
++
++static int __exit w1_gpio_remove(struct platform_device *pdev)
++{
++	struct w1_bus_master *master = platform_get_drvdata(pdev);
++	struct w1_gpio_platform_data *pdata = pdev->dev.platform_data;
++
++	w1_remove_master_device(master);
++	gpio_free(pdata->pin);
++	kfree(master);
++
++	return 0;
++}
++
++static struct platform_driver w1_gpio_driver = {
++	.driver = {
++		.name	= "w1-gpio",
++		.owner	= THIS_MODULE,
++	},
++	.remove	= __exit_p(w1_gpio_remove),
++};
++
++static int __init w1_gpio_init(void)
++{
++	return platform_driver_probe(&w1_gpio_driver, w1_gpio_probe);
++}
++
++static void __exit w1_gpio_exit(void)
++{
++	platform_driver_unregister(&w1_gpio_driver);
++}
++
++module_init(w1_gpio_init);
++module_exit(w1_gpio_exit);
++
++MODULE_DESCRIPTION("GPIO w1 bus master driver");
++MODULE_AUTHOR("Ville Syrjala <syrjala@sci.fi>");
++MODULE_LICENSE("GPL");
+Index: linux-2.6.24.5/include/linux/w1-gpio.h
+===================================================================
+--- /dev/null
++++ linux-2.6.24.5/include/linux/w1-gpio.h
+@@ -0,0 +1,23 @@
++/*
++ * w1-gpio interface to platform code
++ *
++ * Copyright (C) 2007 Ville Syrjala <syrjala@sci.fi>
++ *
++ * 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.
++ */
++#ifndef _LINUX_W1_GPIO_H
++#define _LINUX_W1_GPIO_H
++
++/**
++ * struct w1_gpio_platform_data - Platform-dependent data for w1-gpio
++ * @pin: GPIO pin to use
++ * @is_open_drain: GPIO pin is configured as open drain
++ */
++struct w1_gpio_platform_data {
++	unsigned int pin;
++	unsigned int is_open_drain:1;
++};
++
++#endif /* _LINUX_W1_GPIO_H */