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au1000 now runs .22, mtx-1 watchdog is mainline and i2c patch is planned for rewriting

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SVN-Revision: 7900
This commit is contained in:
Florian Fainelli 2007-07-09 16:06:43 +00:00
parent fb684d26f3
commit c731d18905
4 changed files with 1 additions and 765 deletions
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2
target/linux/au1000-2.6/Makefile
View File

@ -11,7 +11,7 @@ BOARD:=au1000
BOARDNAME:=AMD Alchemy AU1x00
FEATURES:=jffs2 usb pci
LINUX_VERSION:=2.6.21.5
LINUX_VERSION:=2.6.22
define Target/Description
Build firmware for AMD Alchemy 1500 boards

280
target/linux/au1000-2.6/files/drivers/char/watchdog/mtx-1_watchdog.c
View File

@ -1,280 +0,0 @@
/*
* Driver for the MTX-1 Watchdog.
*
* (c) Copyright 2005 4G Systems <info@4g-systems.biz>, All Rights Reserved.
* http://www.4g-systems.biz
*
* (C) Copyright 2007 OpenWrt.org, Florian Fainelli <florian@openwrt.org>
*
* 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.
*
* Neither Michael Stickel nor 4G Systems admit liability nor provide
* warranty for any of this software. This material is provided
* "AS-IS" and at no charge.
*
* (c) Copyright 2005 4G Systems <info@4g-systems.biz>
*
* Release 0.01.
*
* Author: Michael Stickel michael.stickel@4g-systems.biz
*
* Release 0.02.
* Author: Florian Fainelli florian@openwrt.org
* use the Linux watchdog API
*
* The Watchdog is configured to reset the MTX-1
* if it is not triggered for 100 seconds.
* It should not be triggered more often than 1.6 seconds.
*
* A timer triggers the watchdog every 5 seconds, until
* it is opened for the first time. After the first open
* it MUST be triggered every 2..95 seconds.
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/miscdevice.h>
#include <linux/fs.h>
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/timer.h>
#include <linux/completion.h>
#include <linux/jiffies.h>
#include <linux/watchdog.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#include <asm/mach-au1x00/au1000.h>
#define MTX1_WDT_INTERVAL (5 * HZ)
static int ticks = 100 * HZ;
static struct {
struct completion stop;
volatile int running;
struct timer_list timer;
volatile int queue;
int default_ticks;
unsigned long inuse;
} mtx1_wdt_device;
static void mtx1_wdt_trigger(unsigned long unused)
{
u32 tmp;
if (mtx1_wdt_device.running)
ticks--;
/*
* toggle GPIO2_15
*/
tmp = au_readl(GPIO2_DIR);
tmp = (tmp & ~(1<<15)) | ((~tmp) & (1<<15));
au_writel (tmp, GPIO2_DIR);
if (mtx1_wdt_device.queue && ticks)
mod_timer(&mtx1_wdt_device.timer, jiffies + MTX1_WDT_INTERVAL);
else {
complete(&mtx1_wdt_device.stop);
}
}
static void mtx1_wdt_reset(void)
{
ticks = mtx1_wdt_device.default_ticks;
}
static void mtx1_wdt_start(void)
{
if (!mtx1_wdt_device.queue) {
mtx1_wdt_device.queue = 1;
au_writel (au_readl(GPIO2_DIR) | (u32)(1<<15), GPIO2_DIR);
mod_timer(&mtx1_wdt_device.timer, jiffies + MTX1_WDT_INTERVAL);
}
mtx1_wdt_device.running++;
}
static int mtx1_wdt_stop(void)
{
if (mtx1_wdt_device.queue) {
mtx1_wdt_device.queue = 0;
au_writel (au_readl(GPIO2_DIR) & ~((u32)(1<<15)), GPIO2_DIR);
}
ticks = mtx1_wdt_device.default_ticks;
return 0;
}
/* Filesystem functions */
static char restart_after_close;
static int mtx1_wdt_open(struct inode *inode, struct file *file)
{
if (test_and_set_bit(0, &mtx1_wdt_device.inuse))
return -EBUSY;
return nonseekable_open(inode, file);
}
static int mtx1_wdt_release(struct inode *inode, struct file *file)
{
clear_bit(0, &mtx1_wdt_device.inuse);
return 0;
}
static int mtx1_wdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
{
void __user *argp = (void __user *)arg;
unsigned int value;
static struct watchdog_info ident =
{
.options = WDIOF_CARDRESET,
.identity = "MTX-1 WDT",
};
switch(cmd) {
case WDIOC_KEEPALIVE:
mtx1_wdt_reset();
break;
case WDIOC_GETSTATUS:
if ( copy_to_user(argp, &value, sizeof(int)) )
return -EFAULT;
break;
case WDIOC_GETSUPPORT:
if ( copy_to_user(argp, &ident, sizeof(ident)) )
return -EFAULT;
break;
case WDIOC_SETOPTIONS:
if ( copy_from_user(&value, argp, sizeof(int)) )
return -EFAULT;
switch(value) {
case WDIOS_ENABLECARD:
mtx1_wdt_start();
break;
case WDIOS_DISABLECARD:
return mtx1_wdt_stop();
default:
return -EINVAL;
}
break;
default:
return -ENOTTY;
}
return 0;
}
static ssize_t mtx1_wdt_write(struct file *file, const char *buf, size_t count, loff_t *ppos)
{
if (!count)
return -EIO;
mtx1_wdt_reset();
if (count > 0) {
char buffer[10];
int n = (count>9)?9:count;
if (copy_from_user (&buffer, buf, n))
return -EFAULT;
buffer[n]=0;
if (count >= 4 && strncmp("auto", buffer, 4)==0)
restart_after_close = 1;
else if (count >= 6 && strncmp("manual", buffer, 6)==0)
restart_after_close = 0;
return n;
}
return count;
}
#if 0
static ssize_t mtx1_wdt_read (struct file *file, char *buf, size_t count, loff_t *ppos)
{
char * state = restart_after_close ? "auto\n" : "manual\n";
int n = strlen(state)+1;
if (file->f_pos >= n)
return 0;
if (count < n)
return -EINVAL;
if(copy_to_user(buf, state, n))
return -EFAULT;
file->f_pos += n;
return n;
}
#endif
static struct file_operations mtx1_wdt_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.ioctl = mtx1_wdt_ioctl,
.open = mtx1_wdt_open,
.write = mtx1_wdt_write,
//.read = mtx1_wdt_read,
.release = mtx1_wdt_release
};
static struct miscdevice mtx1_wdt_misc = {
.minor = WATCHDOG_MINOR,
.name = "watchdog",
.fops = &mtx1_wdt_fops
};
static int __init mtx1_wdt_init(void)
{
int ret;
if ((ret = misc_register(&mtx1_wdt_misc)) < 0) {
printk(KERN_ERR " mtx-1_wdt : failed to register\n");
return ret;
}
init_completion(&mtx1_wdt_device.stop);
mtx1_wdt_device.queue = 0;
clear_bit(0, &mtx1_wdt_device.inuse);
setup_timer(&mtx1_wdt_device.timer, mtx1_wdt_trigger, 0L);
mtx1_wdt_device.default_ticks = ticks;
mtx1_wdt_start();
printk(KERN_INFO "MTX-1 Watchdog driver\n");
return 0;
}
static void __exit mtx1_wdt_exit(void)
{
if (mtx1_wdt_device.queue) {
mtx1_wdt_device.queue = 0;
wait_for_completion(&mtx1_wdt_device.stop);
}
misc_deregister(&mtx1_wdt_misc);
}
module_init(mtx1_wdt_init);
module_exit(mtx1_wdt_exit);
MODULE_AUTHOR("Michael Stickel, Florian Fainelli");
MODULE_DESCRIPTION("Driver for the MTX-1 watchdog");
MODULE_LICENSE("GPL");

29
target/linux/au1000-2.6/patches/004-mtx1_watchdog.patch
View File

@ -1,29 +0,0 @@
diff -urN linux-2.6.21.1/drivers/char/watchdog/Kconfig linux-2.6.21.1.new/drivers/char/watchdog/Kconfig
--- linux-2.6.21.1/drivers/char/watchdog/Kconfig 2007-04-27 23:49:26.000000000 +0200
+++ linux-2.6.21.1.new/drivers/char/watchdog/Kconfig 2007-05-24 20:05:52.000000000 +0200
@@ -586,6 +586,14 @@
To compile this driver as a module, choose M here: the
module will be called rm9k_wdt.
+config MTX1_WATCHDOG
+ tristate "MTX-1 Hardware Watchdog"
+ depends on WATCHDOG && MIPS_MTX1
+ help
+ Hardware driver for the AccessCube MTX-1 watchdog. This is a
+ watchdog timer that will reboot the machine after a 100 seconds
+ timer expired.
+
# S390 Architecture
config ZVM_WATCHDOG
diff -urN linux-2.6.21.1/drivers/char/watchdog/Makefile linux-2.6.21.1.new/drivers/char/watchdog/Makefile
--- linux-2.6.21.1/drivers/char/watchdog/Makefile 2007-04-27 23:49:26.000000000 +0200
+++ linux-2.6.21.1.new/drivers/char/watchdog/Makefile 2007-05-24 20:05:41.000000000 +0200
@@ -74,6 +74,7 @@
# MIPS Architecture
obj-$(CONFIG_INDYDOG) += indydog.o
obj-$(CONFIG_WDT_RM9K_GPI) += rm9k_wdt.o
+obj-$(CONFIG_MTX1_WATCHDOG) += mtx-1_watchdog.o
# S390 Architecture

455
target/linux/au1000-2.6/patches/010-au100_gpio_i2c.patch
View File

@ -1,455 +0,0 @@
diff -urN linux-2.6.19/drivers/i2c/busses/Kconfig linux-2.6.19.new/drivers/i2c/busses/Kconfig
--- linux-2.6.19/drivers/i2c/busses/Kconfig 2006-11-29 22:57:37.000000000 +0100
+++ linux-2.6.19.new/drivers/i2c/busses/Kconfig 2006-12-28 17:04:34.000000000 +0100
@@ -84,6 +84,17 @@
This driver can also be built as a module. If so, the module
will be called i2c-au1550.
+config I2C_AU1X00GPIO
+ tristate "Au1x00 i2c using GPIO pins"
+ depends on I2C
+ select I2C_ALGOBIT
+ help
+ If you say yest to this option, support will be included for the
+ Au1x00 GPIO interface.
+
+ This driver can also be built as a module. If so, the module
+ will be called i2c-au1x00gpio.
+
config I2C_ELEKTOR
tristate "Elektor ISA card"
depends on I2C && ISA && BROKEN_ON_SMP
diff -urN linux-2.6.19/drivers/i2c/busses/Makefile linux-2.6.19.new/drivers/i2c/busses/Makefile
--- linux-2.6.19/drivers/i2c/busses/Makefile 2006-11-29 22:57:37.000000000 +0100
+++ linux-2.6.19.new/drivers/i2c/busses/Makefile 2006-12-28 03:07:37.000000000 +0100
@@ -9,6 +9,7 @@
obj-$(CONFIG_I2C_AMD756_S4882) += i2c-amd756-s4882.o
obj-$(CONFIG_I2C_AMD8111) += i2c-amd8111.o
obj-$(CONFIG_I2C_AU1550) += i2c-au1550.o
+obj-$(CONFIG_I2C_AU1X00GPIO) += i2c-au1x00gpio.o
obj-$(CONFIG_I2C_ELEKTOR) += i2c-elektor.o
obj-$(CONFIG_I2C_HYDRA) += i2c-hydra.o
obj-$(CONFIG_I2C_I801) += i2c-i801.o
diff -urN linux-2.6.19/drivers/i2c/busses/i2c-au1x00gpio.c linux-2.6.19.new/drivers/i2c/busses/i2c-au1x00gpio.c
--- linux-2.6.19/drivers/i2c/busses/i2c-au1x00gpio.c 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.19.new/drivers/i2c/busses/i2c-au1x00gpio.c 2006-12-28 17:02:10.000000000 +0100
@@ -0,0 +1,406 @@
+/* ------------------------------------------------------------------------- */
+/* i2c-au1x00gpio.c i2c-hw access for Au1x00 GPIO pins. */
+/* ------------------------------------------------------------------------- */
+/* Copyright (C) 1995-2000 Michael Stickel
+
+ 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. */
+/* ------------------------------------------------------------------------- */
+
+/* With some changes from Ky<4B>stialkki <kmalkki@cc.hut.fi> and even
+ Frodo Looijaard <frodol@dds.nl>
+ Simon G. Vogl
+*/
+
+/* $Id: i2c-au1x00gpio.c,v 1.1.1.2 2004/01/22 15:35:47 br1 Exp $ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/stddef.h>
+#include <linux/ioport.h>
+#include <asm/uaccess.h>
+#include <asm/io.h>
+#include <asm-mips/mach-au1x00/au1000.h>
+#include <asm-mips/mach-au1x00/au1000_gpio.h>
+
+#include <linux/slab.h>
+#include <linux/mm.h>
+
+#include <linux/i2c.h>
+#include <linux/i2c-algo-bit.h>
+
+struct i2c_au1x00gpio
+{
+ struct i2c_au1x00gpio *next;
+
+ short scl_gpio;
+ short sda_gpio;
+
+ unsigned long scl_mask;
+ unsigned long sda_mask;
+
+ struct i2c_adapter adapter;
+ struct i2c_algo_bit_data bit_au1x00gpio_data;
+};
+
+static struct i2c_au1x00gpio *adapter_list;
+
+
+
+/* ----- global defines ----------------------------------------------- */
+#define DEB(x) /* should be reasonable open, close &c. */
+#define DEB2(x) /* low level debugging - very slow */
+#define DEBE(x) x /* error messages */
+
+/* ----- printer port defines ------------------------------------------*/
+
+/* ----- local functions ---------------------------------------------- */
+
+
+//-- Primary GPIO
+static void bit_au1x00gpio_setscl(void *data, int state)
+{
+ struct i2c_au1x00gpio * adapter = (struct i2c_au1x00gpio *)data;
+ if (state)
+ au_writel(adapter->scl_mask, SYS_TRIOUTCLR); // Disable Driver: Switch off Transistor => 1
+ else
+ au_writel(adapter->scl_mask, SYS_OUTPUTCLR); // Clear Output and switch on Transistor => 0
+}
+
+
+static void bit_au1x00gpio_setsda(void *data, int state)
+{
+ struct i2c_au1x00gpio * adapter = (struct i2c_au1x00gpio *)data;
+ if (state)
+ au_writel(adapter->sda_mask, SYS_TRIOUTCLR);
+ else
+ au_writel(adapter->sda_mask, SYS_OUTPUTCLR);
+}
+
+
+static int bit_au1x00gpio_getscl(void *data)
+{
+ struct i2c_au1x00gpio * adapter = (struct i2c_au1x00gpio *)data;
+ return (au_readl(SYS_PINSTATERD) & adapter->scl_mask) ? 1 : 0;
+}
+
+
+static int bit_au1x00gpio_getsda(void *data)
+{
+ struct i2c_au1x00gpio * adapter = (struct i2c_au1x00gpio *)data;
+ return (au_readl(SYS_PINSTATERD) & adapter->sda_mask) ? 1 : 0;
+}
+
+
+
+
+/*--
+ *-- Functions for accessing GPIO-2
+ *--
+ */
+static void bit_au1x00gpio2_setscl(void *data, int state)
+{
+ struct i2c_au1x00gpio * adapter = (struct i2c_au1x00gpio *)data;
+ if (state)
+ {
+ au_writel(au_readl(GPIO2_DIR) & ~adapter->scl_mask, GPIO2_DIR);
+ }
+ else
+ {
+ au_writel(au_readl(GPIO2_OUTPUT) & ~adapter->scl_mask, GPIO2_OUTPUT);
+ au_writel(au_readl(GPIO2_DIR) | adapter->scl_mask, GPIO2_DIR);
+ }
+}
+
+static void bit_au1x00gpio2_setsda(void *data, int state)
+{
+ struct i2c_au1x00gpio * adapter = (struct i2c_au1x00gpio *)data;
+ if (state)
+ {
+ au_writel(au_readl(GPIO2_DIR) & ~adapter->sda_mask, GPIO2_DIR);
+ }
+ else
+ {
+ au_writel(au_readl(GPIO2_OUTPUT) & ~adapter->sda_mask, GPIO2_OUTPUT);
+ au_writel(au_readl(GPIO2_DIR) | adapter->sda_mask, GPIO2_DIR);
+ }
+}
+
+static int bit_au1x00gpio2_getscl(void *data)
+{
+ struct i2c_au1x00gpio * adapter = (struct i2c_au1x00gpio *)data;
+ return (au_readl(GPIO2_PINSTATE) & adapter->scl_mask) ? 1 : 0;
+}
+
+static int bit_au1x00gpio2_getsda(void *data)
+{
+ struct i2c_au1x00gpio * adapter = (struct i2c_au1x00gpio *)data;
+ return (au_readl(GPIO2_PINSTATE) & adapter->sda_mask) ? 1 : 0;
+}
+
+
+
+static int check_i2c_au1x00gpio_adapter(struct i2c_au1x00gpio *adapter)
+{
+ int state = 0;
+
+ adapter->bit_au1x00gpio_data.setsda (adapter, 1);
+ adapter->bit_au1x00gpio_data.setscl (adapter, 1);
+
+ if (adapter->bit_au1x00gpio_data.getsda(adapter)==0)
+ {
+ printk ("i2c-au1x00gpio: sda line should read 1 but reads 0\n");
+ state = -1;
+ }
+ if (adapter->bit_au1x00gpio_data.getscl(adapter)==0)
+ {
+ printk ("i2c-au1x00gpio: scl line should read 1 but reads 0\n");
+ state = -1;
+ }
+
+
+ adapter->bit_au1x00gpio_data.setsda (adapter, 0);
+ adapter->bit_au1x00gpio_data.setscl (adapter, 0);
+
+ if (adapter->bit_au1x00gpio_data.getsda(adapter)==1)
+ {
+ printk ("i2c-au1x00gpio: sda line should read 0 but reads 1\n");
+ state = -1;
+ }
+ if (adapter->bit_au1x00gpio_data.getscl(adapter)==1)
+ {
+ printk ("i2c-au1x00gpio: scl line should read 0 but reads 1\n");
+ state = -1;
+ }
+
+ if (state==0)
+ printk ("i2c-au1x00gpio: adapter with scl=GPIO%d,sda=GPIO%d is working\n",
+ adapter->scl_gpio, adapter->sda_gpio
+ );
+ return state;
+}
+
+
+
+#if 0
+static int bit_au1x00gpio_reg(struct i2c_client *client)
+{
+ return 0;
+}
+
+static int bit_au1x00gpio_unreg(struct i2c_client *client)
+{
+ return 0;
+}
+
+static void bit_au1x00gpio_inc_use(struct i2c_adapter *adap)
+{
+ MOD_INC_USE_COUNT;
+}
+
+static void bit_au1x00gpio_dec_use(struct i2c_adapter *adap)
+{
+ MOD_DEC_USE_COUNT;
+}
+#endif
+
+
+
+static struct i2c_algo_bit_data bit_au1x00gpio_data = {
+ .data = NULL,
+ .setsda = bit_au1x00gpio_setsda,
+ .setscl = bit_au1x00gpio_setscl,
+ .getsda = bit_au1x00gpio_getsda,
+ .getscl = bit_au1x00gpio_getscl,
+ .udelay = 80,
+ .timeout = HZ,
+};
+
+
+static struct i2c_adapter bit_au1x00gpio_ops = {
+ .owner = THIS_MODULE,
+ .name = "Au1x00 GPIO I2C adapter",
+ .id = I2C_HW_B_AU1x00GPIO,
+};
+
+
+
+/*
+ * scl_gpio:
+ * 0..31 for primary GPIO's
+ * 200..215 for secondary GPIO's
+ *
+ * sda_gpio:
+ * 0..31 for primary GPIO's
+ * 200..215 for secondary GPIO's
+ *
+ * You can even mix primary and secondary GPIO's.
+ * E.g.: i2c_au1x00gpio_create(4,206);
+ */
+
+static int i2c_au1x00gpio_create (int scl_gpio, int sda_gpio)
+{
+ if ((scl_gpio < 32 || (scl_gpio >= 200 && scl_gpio <= 215)) &&
+ (scl_gpio < 32 || (scl_gpio >= 200 && scl_gpio <= 215)))
+ {
+ struct i2c_au1x00gpio *adapter = kmalloc(sizeof(struct i2c_au1x00gpio),
+ GFP_KERNEL);
+ if (!adapter) {
+ printk(KERN_ERR "i2c-au1x00-gpio: Unable to malloc.\n");
+ return -1;
+ }
+
+ printk(KERN_DEBUG "i2c-au1x00-gpio.o: attaching to SCL=GPIO%d, SDA=GPIO%d\n",
+ scl_gpio, sda_gpio);
+
+ memset (adapter, 0, sizeof(struct i2c_au1x00gpio));
+
+ adapter->adapter = bit_au1x00gpio_ops;
+
+ adapter->adapter.algo_data = &adapter->bit_au1x00gpio_data;
+ adapter->bit_au1x00gpio_data = bit_au1x00gpio_data;
+ adapter->bit_au1x00gpio_data.data = adapter;
+
+ adapter->bit_au1x00gpio_data.data = adapter;
+
+ adapter->scl_gpio = scl_gpio;
+ adapter->sda_gpio = sda_gpio;
+
+ if (sda_gpio < 32)
+ {
+ adapter->bit_au1x00gpio_data.setsda = bit_au1x00gpio_setsda;
+ adapter->bit_au1x00gpio_data.getsda = bit_au1x00gpio_getsda;
+ adapter->sda_mask = 1<<sda_gpio;
+ }
+ else if (sda_gpio >= 200 && sda_gpio <= 215)
+ {
+ adapter->bit_au1x00gpio_data.setsda = bit_au1x00gpio2_setsda;
+ adapter->bit_au1x00gpio_data.getsda = bit_au1x00gpio2_getsda;
+ adapter->sda_mask = 1<<(sda_gpio-200);
+ }
+
+
+ if (scl_gpio < 32)
+ {
+ adapter->bit_au1x00gpio_data.setscl = bit_au1x00gpio_setscl;
+ adapter->bit_au1x00gpio_data.getscl = bit_au1x00gpio_getscl;
+ adapter->scl_mask = 1<<scl_gpio;
+ }
+ else if (scl_gpio >= 200 && scl_gpio <= 215)
+ {
+ adapter->bit_au1x00gpio_data.setscl = bit_au1x00gpio2_setscl;
+ adapter->bit_au1x00gpio_data.getscl = bit_au1x00gpio2_getscl;
+ adapter->scl_mask = 1<<(scl_gpio-200);
+ }
+
+ au_writel(0L, SYS_PININPUTEN);
+ if (check_i2c_au1x00gpio_adapter(adapter)==0)
+ {
+ adapter->bit_au1x00gpio_data.setsda (adapter, 1);
+ adapter->bit_au1x00gpio_data.setscl (adapter, 1);
+
+ if (i2c_bit_add_bus(&adapter->adapter) < 0)
+ {
+ printk(KERN_ERR "i2c-au1x00-gpio: Unable to register with I2C.\n");
+ kfree(adapter);
+ return -1; /* No good */
+ }
+
+ adapter->next = adapter_list;
+ adapter_list = adapter;
+ return 0;
+ }
+ }
+ else
+ printk(KERN_ERR "i2c-au1x00-gpio: Invalid argument scl_gpio=%d, sda_gpio=%d.\n", scl_gpio, sda_gpio);
+ return -1;
+}
+
+
+
+static void i2c_au1x00gpio_delete (int scl_gpio, int sda_gpio)
+{
+ struct i2c_au1x00gpio *adapter, *prev = NULL;
+
+ for (adapter = adapter_list; adapter; adapter = adapter->next)
+ {
+ if (adapter->scl_gpio == scl_gpio &&
+ adapter->sda_gpio == sda_gpio)
+ {
+ i2c_del_adapter(&adapter->adapter);
+ if (prev)
+ prev->next = adapter->next;
+ else
+ adapter_list = adapter->next;
+ kfree(adapter);
+ return;
+ }
+ prev = adapter;
+ }
+}
+
+
+
+
+
+#ifndef CONFIG_I2C_AU1X00GPIO_SCL
+#define CONFIG_I2C_AU1X00GPIO_SCL (210)
+#endif
+
+#ifndef CONFIG_I2C_AU1X00GPIO_SDA
+#define CONFIG_I2C_AU1X00GPIO_SDA (9)
+#endif
+
+static int au1x00gpiopin_scl = CONFIG_I2C_AU1X00GPIO_SCL;
+static int au1x00gpiopin_sda = CONFIG_I2C_AU1X00GPIO_SDA;
+
+
+
+static int __init i2c_bit_au1x00gpio_init(void)
+{
+ printk(KERN_INFO "i2c-au1x00gpio.o: i2c Au1x00 GPIO adapter module version\n");
+
+ if (i2c_au1x00gpio_create (au1x00gpiopin_scl, au1x00gpiopin_sda) == 0)
+ {
+ printk(KERN_INFO "i2c-au1x00gpio.o: registered I2C-Bus for GPIO%d,GPIO%d\n",
+ au1x00gpiopin_scl, au1x00gpiopin_sda
+ );
+ return 0;
+ }
+ printk(KERN_INFO "i2c-au1x00gpio.o: failed to register I2C-Bus for GPIO%d,GPIO%d\n",
+ au1x00gpiopin_scl, au1x00gpiopin_sda
+ );
+ return -1;
+}
+
+
+static void __exit i2c_bit_au1x00gpio_exit(void)
+{
+ i2c_au1x00gpio_delete (au1x00gpiopin_scl, au1x00gpiopin_sda);
+}
+
+module_param(au1x00gpiopin_scl, int, 0644);
+MODULE_PARM_DESC(au1x00gpiopin_scl, "GPIO pin number used for SCL pin.");
+
+module_param(au1x00gpiopin_sda, int, 0644);
+MODULE_PARM_DESC(au1x00gpiopin_sda, "GPIO pin number used for SDA pin.");
+
+MODULE_AUTHOR("Michael Stickel <michael@cubic.org>");
+MODULE_DESCRIPTION("I2C-Bus adapter routines for Au1x00 GPIO adapter.");
+MODULE_LICENSE("GPL");
+
+module_init(i2c_bit_au1x00gpio_init);
+module_exit(i2c_bit_au1x00gpio_exit);
diff -urN linux-2.6.19/include/linux/i2c-id.h linux-2.6.19.new/include/linux/i2c-id.h
--- linux-2.6.19/include/linux/i2c-id.h 2006-11-29 22:57:37.000000000 +0100
+++ linux-2.6.19.new/include/linux/i2c-id.h 2006-12-28 03:12:15.000000000 +0100
@@ -231,6 +231,9 @@
/* --- Au1550 PSC adapters adapters */
#define I2C_HW_AU1550_PSC 0x1b0000
+/* --- Au1x00 i2c GPIO adapter */
+#define I2C_HW_B_AU1x00GPIO 0x1b
+
/* --- SMBus only adapters */
#define I2C_HW_SMBUS_PIIX4 0x040000
#define I2C_HW_SMBUS_ALI15X3 0x040001