+++ /dev/null
-Index: linux-2.6.30.9/drivers/i2c/busses/Kconfig
-===================================================================
---- linux-2.6.30.9.orig/drivers/i2c/busses/Kconfig 2009-11-24 21:00:21.000000000 +0100
-+++ linux-2.6.30.9/drivers/i2c/busses/Kconfig 2009-11-24 21:00:23.000000000 +0100
-@@ -326,6 +326,10 @@
- devices such as DaVinci NIC.
- For details please see http://www.ti.com/davinci
-
-+config I2C_EP93XX
-+ tristate "EP93XX I2C"
-+ depends on I2C && ARCH_EP93XX
-+
- config I2C_GPIO
- tristate "GPIO-based bitbanging I2C"
- depends on GENERIC_GPIO
-Index: linux-2.6.30.9/drivers/i2c/busses/Makefile
-===================================================================
---- linux-2.6.30.9.orig/drivers/i2c/busses/Makefile 2009-11-24 21:00:21.000000000 +0100
-+++ linux-2.6.30.9/drivers/i2c/busses/Makefile 2009-11-24 21:00:23.000000000 +0100
-@@ -30,6 +30,7 @@
- obj-$(CONFIG_I2C_BLACKFIN_TWI) += i2c-bfin-twi.o
- obj-$(CONFIG_I2C_CPM) += i2c-cpm.o
- obj-$(CONFIG_I2C_DAVINCI) += i2c-davinci.o
-+obj-$(CONFIG_I2C_EP93XX) += i2c-ep93xx.o
- obj-$(CONFIG_I2C_GPIO) += i2c-gpio.o
- obj-$(CONFIG_I2C_HIGHLANDER) += i2c-highlander.o
- obj-$(CONFIG_I2C_IBM_IIC) += i2c-ibm_iic.o
-Index: linux-2.6.30.9/drivers/i2c/busses/i2c-ep93xx.c
-===================================================================
---- /dev/null 1970-01-01 00:00:00.000000000 +0000
-+++ linux-2.6.30.9/drivers/i2c/busses/i2c-ep93xx.c 2009-11-24 21:00:38.000000000 +0100
-@@ -0,0 +1,193 @@
-+/* ------------------------------------------------------------------------ *
-+ * i2c-ep933xx.c I2C bus glue for Cirrus EP93xx *
-+ * ------------------------------------------------------------------------ *
-+
-+ Copyright (C) 2004 Michael Burian
-+
-+ Based on i2c-parport-light.c
-+ Copyright (C) 2003-2004 Jean Delvare <khali@linux-fr.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.
-+
-+ 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.
-+ * ------------------------------------------------------------------------ */
-+
-+
-+//#include <linux/config.h>
-+#include <linux/kernel.h>
-+#include <linux/module.h>
-+#include <linux/init.h>
-+#include <linux/ioport.h>
-+#include <linux/delay.h>
-+#include <linux/i2c.h>
-+#include <linux/i2c-algo-bit.h>
-+#include <asm/io.h>
-+#include <mach/hardware.h>
-+
-+//1/(2*clockfrequency)
-+#define EE_DELAY_USEC 50
-+#define GPIOG_EECLK 1
-+#define GPIOG_EEDAT 2
-+
-+/* ----- I2C algorithm call-back functions and structures ----------------- */
-+
-+// TODO: optimize
-+static void ep93xx_setscl(void *data, int state)
-+{
-+ unsigned int uiPGDR, uiPGDDR;
-+
-+ uiPGDR = inl(GPIO_PGDR);
-+ uiPGDDR = inl(GPIO_PGDDR);
-+
-+ /* Configure the clock line as output. */
-+ uiPGDDR |= GPIOG_EECLK;
-+ outl(uiPGDDR, GPIO_PGDDR);
-+
-+ /* Set clock line to state */
-+ if(state)
-+ uiPGDR |= GPIOG_EECLK;
-+ else
-+ uiPGDR &= ~GPIOG_EECLK;
-+
-+ outl(uiPGDR, GPIO_PGDR);
-+}
-+
-+static void ep93xx_setsda(void *data, int state)
-+{
-+ unsigned int uiPGDR, uiPGDDR;
-+
-+ uiPGDR = inl(GPIO_PGDR);
-+ uiPGDDR = inl(GPIO_PGDDR);
-+
-+ /* Configure the data line as output. */
-+ uiPGDDR |= GPIOG_EEDAT;
-+ outl(uiPGDDR, GPIO_PGDDR);
-+
-+ /* Set data line to state */
-+ if(state)
-+ uiPGDR |= GPIOG_EEDAT;
-+ else
-+ uiPGDR &= ~GPIOG_EEDAT;
-+
-+ outl(uiPGDR, GPIO_PGDR);
-+}
-+
-+static int ep93xx_getscl(void *data)
-+{
-+ unsigned int uiPGDR, uiPGDDR;
-+
-+ uiPGDR = inl(GPIO_PGDR);
-+ uiPGDDR = inl(GPIO_PGDDR);
-+
-+ /* Configure the clock line as input */
-+ uiPGDDR &= ~GPIOG_EECLK;
-+ outl(uiPGDDR, GPIO_PGDDR);
-+
-+ /* Return state of the clock line */
-+ return (inl(GPIO_PGDR) & GPIOG_EECLK) ? 1 : 0;
-+}
-+
-+static int ep93xx_getsda(void *data)
-+{
-+ unsigned int uiPGDR, uiPGDDR;
-+ uiPGDR = inl(GPIO_PGDR);
-+ uiPGDDR = inl(GPIO_PGDDR);
-+
-+ /* Configure the data line as input */
-+ uiPGDDR &= ~GPIOG_EEDAT;
-+ outl(uiPGDDR, GPIO_PGDDR);
-+
-+ /* Return state of the data line */
-+ return (inl(GPIO_PGDR) & GPIOG_EEDAT) ? 1 : 0;
-+}
-+
-+/* ------------------------------------------------------------------------
-+ * Encapsulate the above functions in the correct operations structure.
-+ * This is only done when more than one hardware adapter is supported.
-+ */
-+
-+/* last line (us, ms, timeout)
-+ * us dominates the bit rate: 10us means: 100Kbit/sec(25 means 40kbps)
-+ * 10ms not known
-+ * 100ms timeout
-+ */
-+static struct i2c_algo_bit_data ep93xx_data = {
-+ .setsda = ep93xx_setsda,
-+ .setscl = ep93xx_setscl,
-+ .getsda = ep93xx_getsda,
-+ .getscl = ep93xx_getscl,
-+ .udelay = 10,
-+ //.mdelay = 10,
-+ .timeout = HZ,
-+};
-+
-+/* ----- I2c structure ---------------------------------------------------- */
-+static struct i2c_adapter ep93xx_adapter = {
-+ .owner = THIS_MODULE,
-+ .class = I2C_CLASS_HWMON,
-+ .algo_data = &ep93xx_data,
-+ .name = "EP93XX I2C bit-bang interface",
-+};
-+
-+/* ----- Module loading, unloading and information ------------------------ */
-+
-+static int __init i2c_ep93xx_init(void)
-+{
-+ unsigned long uiPGDR, uiPGDDR;
-+
-+ /* Read the current value of the GPIO data and data direction registers. */
-+ uiPGDR = inl(GPIO_PGDR);
-+ uiPGDDR = inl(GPIO_PGDDR);
-+
-+ /* If the GPIO pins have not been configured since reset, the data
-+ * and clock lines will be set as inputs and with data value of 0.
-+ * External pullup resisters are pulling them high.
-+ * Set them both high before configuring them as outputs. */
-+ uiPGDR |= (GPIOG_EEDAT | GPIOG_EECLK);
-+ outl(uiPGDR, GPIO_PGDR);
-+
-+ /* Delay to meet the EE Interface timing specification. */
-+ udelay(EE_DELAY_USEC);
-+
-+
-+ /* Configure the EE data and clock lines as outputs. */
-+ uiPGDDR |= (GPIOG_EEDAT | GPIOG_EECLK);
-+ outl(uiPGDDR, GPIO_PGDDR);
-+
-+ /* Delay to meet the EE Interface timing specification. */
-+ udelay(EE_DELAY_USEC);
-+
-+ /* Reset hardware to a sane state (SCL and SDA high) */
-+ ep93xx_setsda(NULL, 1);
-+ ep93xx_setscl(NULL, 1);
-+
-+ if (i2c_bit_add_bus(&ep93xx_adapter) > 0) {
-+ printk(KERN_ERR "i2c-ep93xx: Unable to register with I2C\n");
-+ return -ENODEV;
-+ }
-+
-+ return 0;
-+}
-+
-+static void __exit i2c_ep93xx_exit(void)
-+{
-+ //i2c_bit_del_bus(&ep93xx_adapter);
-+ i2c_del_adapter(&ep93xx_adapter);
-+}
-+
-+MODULE_AUTHOR("Michael Burian");
-+MODULE_DESCRIPTION("I2C bus glue for Cirrus EP93xx processors");
-+MODULE_LICENSE("GPL");
-+
-+module_init(i2c_ep93xx_init);
-+module_exit(i2c_ep93xx_exit);
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