fix up eeprom and add ssc driver ... this needs a lot of work

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@9761 3c298f89-4303-0410-b956-a3cf2f4a3e73

10 files changed, 3384 insertions, 339 deletions

diff --git a/target/linux/danube/config-2.6.23 b/target/linux/danube/config-2.6.23
index 07a019ec61..887519324f 100644
--- a/target/linux/danube/config-2.6.23
+++ b/target/linux/danube/config-2.6.23
@@ -46,6 +46,7 @@ CONFIG_DANUBE_GPIO=y
 CONFIG_DANUBE_LED=y
 CONFIG_DANUBE_MII0=y
 CONFIG_DANUBE_MII1=y
+CONFIG_DANUBE_SSC=y
 CONFIG_DANUBE_WDT=y
 CONFIG_DEVPORT=y
 # CONFIG_DM9000 is not set
diff --git a/target/linux/danube/files/arch/mips/danube/Kconfig b/target/linux/danube/files/arch/mips/danube/Kconfig
index fded6d4f0d..1c5ad72ca5 100644
--- a/target/linux/danube/files/arch/mips/danube/Kconfig
+++ b/target/linux/danube/files/arch/mips/danube/Kconfig
@@ -24,6 +24,10 @@ config DANUBE_GPIO
 	bool "Danube gpio"
 	default y
 
+config DANUBE_SSC
+	bool "Danube ssc"
+	default y
+
 config DANUBE_EEPROM
 	bool "Danube eeprom"
 	default y
diff --git a/target/linux/danube/files/drivers/char/danube_eeprom.c b/target/linux/danube/files/drivers/char/danube_eeprom.c
index 96fd777274..db0f610370 100644
--- a/target/linux/danube/files/drivers/char/danube_eeprom.c
+++ b/target/linux/danube/files/drivers/char/danube_eeprom.c
@@ -1,57 +1,31 @@
-/******************************************************************************
-**
-** FILE NAME    : danube_eeprom.c
-** PROJECT      : Danube
-** MODULES      : EEPROM
-**
-** DATE         : 31 DEC 2004
-** AUTHOR       : Liu Peng
-** DESCRIPTION  : X25040 EEPROM Driver
-** COPYRIGHT    :       Copyright (c) 2006
-**                      Infineon Technologies AG
-**                      Am Campeon 1-12, 85579 Neubiberg, Germany
-**
-**    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.
-**
-** HISTORY
-** $Date        $Author         $Comment
-** 31 DEC 2004  Liu Peng        Initiate Version
-** 25 OCT 2006  Xu Liang        Add GPL header.
-*******************************************************************************/
-
-#define IFAP_EEPROM_DRV_VERSION "0.0.1"
-
 /*
- **************************************************
+ *   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 driver was originally based on the INCA-IP driver, but due to
- * fundamental conceptual drawbacks there has been changed a lot.
+ *   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.
  *
- * Based on INCA-IP driver Copyright (c) 2003 Gary Jennejohn <gj@denx.de>
- * Based on the VxWorks drivers Copyright (c) 2002, Infineon Technologies.
+ *   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., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  *
- * 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 driver was originally based on the INCA-IP driver, but due to
+ *   fundamental conceptual drawbacks there has been changed a lot.
  *
- * 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.
+ *   Based on INCA-IP driver Copyright (c) 2003 Gary Jennejohn <gj@denx.de>
+ *   Based on the VxWorks drivers Copyright (c) 2002, Infineon Technologies.
  *
- * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *   Copyright (C) 2006 infineon
+ *   Copyright (C) 2007 John Crispin <blogic@openwrt.org> 
  *
  */
-#ifndef EXPORT_SYMTAB
-#define EXPORT_SYMTAB
-#endif
-#include <linux/config.h>
+
+#define IFAP_EEPROM_DRV_VERSION "0.0.1"
+
 #include <linux/module.h>
 #include <linux/errno.h>
 #include <linux/signal.h>
@@ -61,7 +35,6 @@
 #include <linux/major.h>
 #include <linux/string.h>
 #include <linux/fs.h>
-#include <linux/proc_fs.h>
 #include <linux/fcntl.h>
 #include <linux/ptrace.h>
 #include <linux/mm.h>
@@ -81,33 +54,15 @@
 #include <linux/version.h>
 
 #include <asm/danube/danube.h>
-#include <asm/danube/irq.h>
+#include <asm/danube/danube_irq.h>
 #include <asm/danube/ifx_ssc_defines.h>
 #include <asm/danube/ifx_ssc.h>
-#if CONFIG_MODVERSIONS==1
-# include <linux/modversions.h>
-#endif
-
-#define AMAZON_EEPROM_EMSG(fmt,args...) printk("%s:" fmt, __FUNCTION__, ##args)
-
-#if 0
-#define AMAZON_EEPROM_DMSG(fmt,args...) printk("%s:" fmt, __FUNCTION__, ##args)
-#else
-#define AMAZON_EEPROM_DMSG(fmt,args...)
-#endif
-
-MODULE_LICENSE ("GPL");
-MODULE_AUTHOR ("Peng Liu");
-MODULE_DESCRIPTION ("IFAP EEPROM driver");
-MODULE_SUPPORTED_DEVICE ("danube_eeprom");
-MODULE_PARM (maj, "i");
-MODULE_PARM_DESC (maj, "Major device number");
 
 /* allow the user to set the major device number */
-static int maj = 0;
+static int danube_eeprom_maj = 0;
 
-static ssize_t danube_eeprom_read (struct file *, char *, size_t, loff_t *);
-static ssize_t danube_eeprom_write (struct file *, const char *, size_t,
+static ssize_t danube_eeprom_fops_read (struct file *, char *, size_t, loff_t *);
+static ssize_t danube_eeprom_fops_write (struct file *, const char *, size_t,
 				    loff_t *);
 static int danube_eeprom_ioctl (struct inode *, struct file *, unsigned int,
 				unsigned long);
@@ -124,284 +79,277 @@ extern int ifx_ssc_ioctl (struct inode *inode, struct file *filp,
 extern ssize_t ifx_ssc_kwrite (int port, const char *kbuf, size_t len);
 extern ssize_t ifx_ssc_kread (int port, char *kbuf, size_t len);
 
-extern int ifx_ssc_cs_low (u32 pin);
-extern int ifx_ssc_cs_high (u32 pin);
-extern int ifx_ssc_txrx (char *tx_buf, u32 tx_len, char *rx_buf, u32 rx_len);
-extern int ifx_ssc_tx (char *tx_buf, u32 tx_len);
-extern int ifx_ssc_rx (char *rx_buf, u32 rx_len);
+extern int ifx_ssc_cs_low (unsigned int pin);
+extern int ifx_ssc_cs_high (unsigned int pin);
+extern int ifx_ssc_txrx (char *tx_buf, unsigned int tx_len, char *rx_buf, unsigned int rx_len);
+extern int ifx_ssc_tx (char *tx_buf, unsigned int tx_len);
+extern int ifx_ssc_rx (char *rx_buf, unsigned int rx_len);
 
-/* CS: board dependant */
 #define EEPROM_CS IFX_SSC_WHBGPOSTAT_OUT0_POS
 
 /* commands for EEPROM, x25160, x25140 */
-#define EEPROM_WREN			((u8)0x06)
-#define EEPROM_WRDI			((u8)0x04)
-#define EEPROM_RDSR			((u8)0x05)
-#define EEPROM_WRSR			((u8)0x01)
-#define EEPROM_READ			((u8)0x03)
-#define EEPROM_WRITE			((u8)0x02)
+#define EEPROM_WREN			((unsigned char)0x06)
+#define EEPROM_WRDI			((unsigned char)0x04)
+#define EEPROM_RDSR			((unsigned char)0x05)
+#define EEPROM_WRSR			((unsigned char)0x01)
+#define EEPROM_READ			((unsigned char)0x03)
+#define EEPROM_WRITE			((unsigned char)0x02)
 #define EEPROM_PAGE_SIZE		4
 #define EEPROM_SIZE			512
 
-/* Brief:	EEPROM_RDSR command
- * Return:	0      OK
- *		error code
- */
 static int
 eeprom_rdsr (char *status)
 {
 	int ret = 0;
 	unsigned char cmd = EEPROM_RDSR;
-
 	unsigned long flag;
-	local_irq_save (flag);
-	if ((ret = ifx_ssc_cs_low (EEPROM_CS))) {
-		local_irq_restore (flag);
-		return ret;
+
+	local_irq_save(flag);
+
+	if ((ret = ifx_ssc_cs_low (EEPROM_CS)))
+	{
+		local_irq_restore(flag);
+		goto out;
 	}
-	if ((ret = ifx_ssc_txrx (&cmd, 1, status, 1)) < 0) {
-		ifx_ssc_cs_high (EEPROM_CS);
-		local_irq_restore (flag);
-		return ret;
+
+	if ((ret = ifx_ssc_txrx (&cmd, 1, status, 1)) < 0)
+	{
+		ifx_ssc_cs_high(EEPROM_CS);
+		local_irq_restore(flag);
+		goto out;
 	}
 
-	if ((ret = ifx_ssc_cs_high (EEPROM_CS))) {
-		local_irq_restore (flag);
-		return ret;
+	if ((ret = ifx_ssc_cs_high(EEPROM_CS)))
+	{
+		local_irq_restore(flag);
+		goto out;
 	}
-	local_irq_restore (flag);
+
+	local_irq_restore(flag);
+
+out:
 	return ret;
 }
 
-/* Brief: wait for WIP is over
- * Return:
- *	0	WIP is over
- *	<0	Error code
- */
 static inline int
 eeprom_wip_over (void)
 {
 	int ret = 0;
-	u8 status;
-	while (1) {
-		ret = eeprom_rdsr (&status);
-		AMAZON_EEPROM_DMSG ("status %x \n", status);
-		if (ret) {
-			AMAZON_EEPROM_EMSG ("read back status fails %d\n",
-					    ret);
+	unsigned char status;
+
+	while (1)
+	{
+		ret = eeprom_rdsr(&status);
+		printk("status %x \n", status);
+
+		if (ret)
+		{
+			printk("read back status fails %d\n", ret);
 			break;
 		}
-		else if (((status) & 1) != 0) {
-			AMAZON_EEPROM_DMSG ("read back status not zero %x\n",
-					    status);
-		}
-		else {
+
+		if (((status) & 1) != 0)
+			printk("read back status not zero %x\n", status);
+		else
 			break;
-		}
 	}
+
 	return ret;
 }
 
-/* Brief:	EEPROM_WREN command
- * Return:	0      OK
- *		error code
- */
 static int
 eeprom_wren (void)
 {
 	unsigned char cmd = EEPROM_WREN;
 	int ret = 0;
-
 	unsigned long flag;
-	local_irq_save (flag);
-	if ((ret = ifx_ssc_cs_low (EEPROM_CS))) {
-		local_irq_restore (flag);
-		return ret;
+
+	local_irq_save(flag);
+	if ((ret = ifx_ssc_cs_low(EEPROM_CS)))
+	{
+		local_irq_restore(flag);
+		goto out;
 	}
 
-	if ((ret = ifx_ssc_tx (&cmd, 1)) < 0) {
-		ifx_ssc_cs_high (EEPROM_CS);
-		local_irq_restore (flag);
-		return ret;
+	if ((ret = ifx_ssc_tx(&cmd, 1)) < 0)
+	{
+		ifx_ssc_cs_high(EEPROM_CS);
+		local_irq_restore(flag);
+		goto out;
 	}
 
-	if ((ret = ifx_ssc_cs_high (EEPROM_CS))) {
-		local_irq_restore (flag);
-		return ret;
+	if ((ret = ifx_ssc_cs_high(EEPROM_CS)))
+	{
+		local_irq_restore(flag);
+		goto out;
 	}
-	local_irq_restore (flag);
-	eeprom_wip_over ();
-	return ret;
 
+	local_irq_restore(flag);
+	eeprom_wip_over();
+
+out:
+	return ret;
 }
 
-/* Brief:	EEPROM_WRSR command
- * Return:	0      OK
- *		error code
- */
 static int
 eeprom_wrsr (void)
 {
 	int ret = 0;
 	unsigned char cmd[2];
+	unsigned long flag;
+
 	cmd[0] = EEPROM_WRSR;
 	cmd[1] = 0;
-	if ((ret = eeprom_wren ())) {
-		AMAZON_EEPROM_EMSG ("eeprom_wren fails\n");
-		return ret;
-	}
-	unsigned long flag;
-	local_irq_save (flag);
-	if ((ret = ifx_ssc_cs_low (EEPROM_CS))) {
-		goto eeprom_wrsr_err_out;
-	}
 
-	if ((ret = ifx_ssc_tx (cmd, 2)) < 0) {
-		ifx_ssc_cs_high (EEPROM_CS);
-		goto eeprom_wrsr_err_out;
+	if ((ret = eeprom_wren()))
+	{
+		printk ("eeprom_wren fails\n");
+		goto out1;
 	}
 
-	if ((ret = ifx_ssc_cs_low (EEPROM_CS))) {
-		goto eeprom_wrsr_err_out;
+	local_irq_save(flag);
+
+	if ((ret = ifx_ssc_cs_low(EEPROM_CS)))
+		goto out;
+
+	if ((ret = ifx_ssc_tx(cmd, 2)) < 0) {
+		ifx_ssc_cs_high(EEPROM_CS);
+		goto out;
 	}
-	local_irq_restore (flag);
-	eeprom_wip_over ();
+
+	if ((ret = ifx_ssc_cs_low(EEPROM_CS)))
+		goto out;
+
+	local_irq_restore(flag);
+	eeprom_wip_over();
+
 	return ret;
-      eeprom_wrsr_err_out:
+
+out:
 	local_irq_restore (flag);
 	eeprom_wip_over ();
+
+out1:
 	return ret;
 }
 
-/* Brief:	read EEPROM
- * Parameter:
- *	addr
- *	len
- *	buf
- * Return:	 ok
- *		-EFAULT
- */
 static int
-eeprom_read (u32 addr, unsigned char *buf, u32 len)
+eeprom_read (unsigned int addr, unsigned char *buf, unsigned int len)
 {
 	int ret = 0;
 	unsigned char write_buf[2];
-	u32 eff = 0;
-
+	unsigned int eff = 0;
 	unsigned long flag;
 
-	while (1) {
-		eeprom_wip_over ();
+	while (1)
+	{
+		eeprom_wip_over();
 		eff = EEPROM_PAGE_SIZE - (addr % EEPROM_PAGE_SIZE);
 		eff = (eff < len) ? eff : len;
-		//Format:
-		//CMD + ADDR
-		local_irq_save (flag);
-		if ((ret = ifx_ssc_cs_low (EEPROM_CS)) < 0) {
-			goto eeprom_read_err_out;
-		}
+		local_irq_save(flag);
+
+		if ((ret = ifx_ssc_cs_low(EEPROM_CS)) < 0)
+			goto out;
 
-		write_buf[0] = EEPROM_READ | ((u8) ((addr & 0x100) >> 5));
+		write_buf[0] = EEPROM_READ | ((unsigned char) ((addr & 0x100) >> 5));
 		write_buf[1] = (addr & 0xff);
 
-		if ((ret = ifx_ssc_txrx (write_buf, 2, buf, eff)) != eff) {
-			AMAZON_EEPROM_EMSG ("ssc_txrx fails %d\n", ret);
+		if ((ret = ifx_ssc_txrx (write_buf, 2, buf, eff)) != eff)
+		{
+			printk("ssc_txrx fails %d\n", ret);
 			ifx_ssc_cs_high (EEPROM_CS);
-			goto eeprom_read_err_out;
+			goto out;
 		}
+
 		buf += ret;
 		len -= ret;
 		addr += ret;
-		if ((ret = ifx_ssc_cs_high (EEPROM_CS))) {
-			goto eeprom_read_err_out;
-		}
-		local_irq_restore (flag);
-		if (len <= 0) {
-			break;
-		}
+
+		if ((ret = ifx_ssc_cs_high(EEPROM_CS)))
+			goto out;
+
+		local_irq_restore(flag);
+
+		if (len <= 0)
+			goto out2;
 	}
 
-	return ret;
-      eeprom_read_err_out:
+out:
 	local_irq_restore (flag);
+out2:
 	return ret;
 }
 
-/* Brief:	 write EEPROm
- * Parameter:
- *	addr
- *	len
- *	buf
- * Return:	0 ok
- *		-EFAULT
- */
 static int
-eeprom_write (u32 addr, unsigned char *buf, u32 len)
+eeprom_write (unsigned int addr, unsigned char *buf, unsigned int len)
 {
 	int ret = 0;
-	u32 eff = 0;
+	unsigned int eff = 0;
 	unsigned char write_buf[2];
+	int i;
+	unsigned char rx_buf[EEPROM_PAGE_SIZE];
+
+	while (1)
+	{
+		eeprom_wip_over();
 
-	//unsigned char rx_buf[EEPROM_PAGE_SIZE];
-	//Format:
-	//CMD + ADDR + DATA (up to EEPROM_PAGE_SIZE)
-	while (1) {
-		eeprom_wip_over ();
-		if ((ret = eeprom_wren ())) {
-			AMAZON_EEPROM_EMSG ("eeprom_wren fails\n");
-			return ret;
+		if ((ret = eeprom_wren()))
+		{
+			printk("eeprom_wren fails\n");
+			goto out;
 		}
-		write_buf[0] = EEPROM_WRITE | ((u8) ((addr & 0x100) >> 5));
+
+		write_buf[0] = EEPROM_WRITE | ((unsigned char) ((addr & 0x100) >> 5));
 		write_buf[1] = (addr & 0xff);
 
 		eff = EEPROM_PAGE_SIZE - (addr % EEPROM_PAGE_SIZE);
 		eff = (eff < len) ? eff : len;
-		AMAZON_EEPROM_DMSG ("EEPROM Write:\n");
-#if 0
-		int i;
+
+		printk("EEPROM Write:\n");
 		for (i = 0; i < eff; i++) {
-			printk ("%2x ", buf[i]);
-			if (i % 16 == 15)
-				printk ("\n");
+			printk("%2x ", buf[i]);
+			if ((i % 16) == 15)
+				printk("\n");
 		}
-		printk ("\n");
-#endif
+		printk("\n");
 
-		if ((ret = ifx_ssc_cs_low (EEPROM_CS))) {
-			return ret;
-		}
+		if ((ret = ifx_ssc_cs_low(EEPROM_CS)))
+			goto out;
 
-		if ((ret = ifx_ssc_tx (write_buf, 2)) < 0) {
-			AMAZON_EEPROM_EMSG ("ssc_tx fails %d\n", ret);
-			ifx_ssc_cs_high (EEPROM_CS);
-			return ret;
+		if ((ret = ifx_ssc_tx (write_buf, 2)) < 0)
+		{
+			printk("ssc_tx fails %d\n", ret);
+			ifx_ssc_cs_high(EEPROM_CS);
+			goto out;
 		}
 
-		if ((ret = ifx_ssc_tx (buf, eff)) != eff) {
-			AMAZON_EEPROM_EMSG ("ssc_tx fails %d\n", ret);
-			ifx_ssc_cs_high (EEPROM_CS);
-			return ret;
+		if ((ret = ifx_ssc_tx (buf, eff)) != eff)
+		{
+			printk("ssc_tx fails %d\n", ret);
+			ifx_ssc_cs_high(EEPROM_CS);
+			goto out;
 		}
 
 		buf += ret;
 		len -= ret;
 		addr += ret;
 
-		if ((ret = ifx_ssc_cs_high (EEPROM_CS))) {
-			return ret;
-		}
-#if 0
+		if ((ret = ifx_ssc_cs_high (EEPROM_CS)))
+			goto out;
+
 		printk ("<==");
-		eeprom_read ((addr - eff), rx_buf, eff);
-		for (i = 0; i < eff; i++) {
+		eeprom_read((addr - eff), rx_buf, eff);
+		for (i = 0; i < eff; i++)
+		{
 			printk ("[%x]", rx_buf[i]);
 		}
 		printk ("\n");
-#endif
+
 		if (len <= 0)
 			break;
 	}
 
+out:
 	return ret;
 }
 
@@ -419,139 +367,156 @@ danube_eeprom_close (struct inode *inode, struct file *filp)
 }
 
 int
-danube_eeprom_ioctl (struct inode *inode, struct file *filp, unsigned int cmd,
-		     unsigned long data)
+danube_eeprom_ioctl (struct inode *inode, struct file *filp, unsigned int cmd, unsigned long data)
 {
 	return 0;
 }
 
 ssize_t
-danube_eeprom_kread (char *buf, size_t len, u32 addr)
+danube_eeprom_read (char *buf, size_t len, unsigned int addr)
 {
 	int ret = 0;
-	u32 data;
-	printk ("addr:=%d\n", addr);
-	printk ("len:=%d\n", len);
-	if ((addr + len) > EEPROM_SIZE) {
-		AMAZON_EEPROM_EMSG ("invalid len\n");
+	unsigned int data;
+
+	printk("addr:=%d\n", addr);
+	printk("len:=%d\n", len);
+
+	if ((addr + len) > EEPROM_SIZE)
+	{
+		printk("invalid len\n");
 		addr = 0;
 		len = EEPROM_SIZE / 2;
 	}
 
-	if ((ret = ifx_ssc_open ((struct inode *) 0, NULL))) {
-		AMAZON_EEPROM_EMSG ("danube_eeprom_open fails\n");
-		goto read_err_out;
+	if ((ret = ifx_ssc_open ((struct inode *) 0, NULL)))
+	{
+		printk("danube_eeprom_open fails\n");
+		goto out;
 	}
 
-	data = (u32) IFX_SSC_MODE_RXTX;
-	if ((ret =
-	     ifx_ssc_ioctl ((struct inode *) 0, NULL, IFX_SSC_RXTX_MODE_SET,
-			    (unsigned long) &data))) {
-		AMAZON_EEPROM_EMSG ("set RXTX mode fails\n");
-		goto read_err_out;
-	}
+	data = (unsigned int)IFX_SSC_MODE_RXTX;
 
-	if ((ret = eeprom_wrsr ())) {
-		AMAZON_EEPROM_EMSG ("EEPROM reset fails\n");
-		goto read_err_out;
+	if ((ret = ifx_ssc_ioctl ((struct inode *) 0, NULL, IFX_SSC_RXTX_MODE_SET, (unsigned long) &data)))
+	{
+		printk("set RXTX mode fails\n");
+		goto out;
 	}
 
-	if ((ret = eeprom_read (addr, buf, len))) {
-		AMAZON_EEPROM_EMSG ("eeprom read fails\n");
-		goto read_err_out;
+	if ((ret = eeprom_wrsr ()))
+	{
+		printk("EEPROM reset fails\n");
+		goto out;
 	}
 
-      read_err_out:
-	if (ifx_ssc_close ((struct inode *) 0, NULL)) {
-		AMAZON_EEPROM_EMSG ("danube_eeprom_close fails\n");
+	if ((ret = eeprom_read (addr, buf, len)))
+	{
+		printk("eeprom read fails\n");
+		goto out;
 	}
-	return len;
 
-}
+out:
+	if (ifx_ssc_close ((struct inode *) 0, NULL))
+		printk("danube_eeprom_close fails\n");
 
-EXPORT_SYMBOL (danube_eeprom_kread);
+	return len;
+}
+EXPORT_SYMBOL(danube_eeprom_read);
 
 static ssize_t
-danube_eeprom_read (struct file *filp, char *ubuf, size_t len, loff_t * off)
+danube_eeprom_fops_read (struct file *filp, char *ubuf, size_t len, loff_t * off)
 {
 	int ret = 0;
 	unsigned char ssc_rx_buf[EEPROM_SIZE];
 	long flag;
+
 	if (*off >= EEPROM_SIZE)
 		return 0;
+
 	if (*off + len > EEPROM_SIZE)
 		len = EEPROM_SIZE - *off;
+
 	if (len == 0)
 		return 0;
-	local_irq_save (flag);
-	if ((ret = danube_eeprom_kread (ssc_rx_buf, len, *off)) < 0) {
-		AMAZON_EEPROM_EMSG ("read fails, err=%x\n", ret);
-		local_irq_restore (flag);
+
+	local_irq_save(flag);
+
+	if ((ret = danube_eeprom_read(ssc_rx_buf, len, *off)) < 0)
+	{
+		printk("read fails, err=%x\n", ret);
+		local_irq_restore(flag);
 		return ret;
 	}
-	if (copy_to_user ((void *) ubuf, ssc_rx_buf, ret) != 0) {
-		local_irq_restore (flag);
+
+	if (copy_to_user((void*)ubuf, ssc_rx_buf, ret) != 0)
+	{
+		local_irq_restore(flag);
 		ret = -EFAULT;
 	}
-	local_irq_restore (flag);
+
+	local_irq_restore(flag);
 	*off += len;
+
 	return len;
 }
 
 ssize_t
-danube_eeprom_kwrite (char *buf, size_t len, u32 addr)
+danube_eeprom_write (char *buf, size_t len, unsigned int addr)
 {
 	int ret = 0;
-	u32 data;
-	if ((ret = ifx_ssc_open ((struct inode *) 0, NULL))) {
-		AMAZON_EEPROM_EMSG ("danube_eeprom_open fails\n");
-		goto write_err_out;
+	unsigned int data;
+
+	if ((ret = ifx_ssc_open ((struct inode *) 0, NULL)))
+	{
+		printk ("danube_eeprom_open fails\n");
+		goto out;
 	}
 
-	data = (u32) IFX_SSC_MODE_RXTX;
-	if ((ret =
-	     ifx_ssc_ioctl ((struct inode *) 0, NULL, IFX_SSC_RXTX_MODE_SET,
-			    (unsigned long) &data))) {
-		AMAZON_EEPROM_EMSG ("set RXTX mode fails\n");
-		goto write_err_out;
+	data = (unsigned int) IFX_SSC_MODE_RXTX;
+
+	if ((ret = ifx_ssc_ioctl ((struct inode *) 0, NULL, IFX_SSC_RXTX_MODE_SET, (unsigned long) &data)))
+	{
+		printk ("set RXTX mode fails\n");
+		goto out;
 	}
 
 	if ((ret = eeprom_wrsr ())) {
-		AMAZON_EEPROM_EMSG ("EEPROM reset fails\n");
-		goto write_err_out;
+		printk ("EEPROM reset fails\n");
+		goto out;
 	}
 
 	if ((ret = eeprom_write (addr, buf, len))) {
-		AMAZON_EEPROM_EMSG ("eeprom write fails\n");
-		goto write_err_out;
+		printk ("eeprom write fails\n");
+		goto out;
 	}
 
-      write_err_out:
-	if (ifx_ssc_close ((struct inode *) 0, NULL)) {
-		AMAZON_EEPROM_EMSG ("danube_eeprom_close fails\n");
-	}
+out:
+	if (ifx_ssc_close ((struct inode *) 0, NULL))
+		printk ("danube_eeprom_close fails\n");
+
 	return ret;
 }
-
-EXPORT_SYMBOL (danube_eeprom_kwrite);
+EXPORT_SYMBOL(danube_eeprom_write);
 
 static ssize_t
-danube_eeprom_write (struct file *filp, const char *ubuf, size_t len,
-		     loff_t * off)
+danube_eeprom_fops_write (struct file *filp, const char *ubuf, size_t len, loff_t * off)
 {
 	int ret = 0;
 	unsigned char ssc_tx_buf[EEPROM_SIZE];
+
 	if (*off >= EEPROM_SIZE)
 		return 0;
+
 	if (len + *off > EEPROM_SIZE)
 		len = EEPROM_SIZE - *off;
-	if ((ret = copy_from_user (ssc_tx_buf, ubuf, len))) {
+
+	if ((ret = copy_from_user (ssc_tx_buf, ubuf, len)))
 		return EFAULT;
-	}
-	ret = danube_eeprom_kwrite (ssc_tx_buf, len, *off);
-	if (ret > 0) {
+
+	ret = danube_eeprom_write (ssc_tx_buf, len, *off);
+
+	if (ret > 0)
 		*off = ret;
-	}
+
 	return ret;
 }
 
@@ -560,33 +525,34 @@ danube_eeprom_llseek (struct file * filp, loff_t off, int whence)
 {
 	loff_t newpos;
 	switch (whence) {
-	case 0:		/*SEEK_SET */
+	case SEEK_SET:
 		newpos = off;
 		break;
-	case 1:		/*SEEK_CUR */
+
+	case SEEK_CUR:
 		newpos = filp->f_pos + off;
 		break;
+
 	default:
 		return -EINVAL;
 	}
+
 	if (newpos < 0)
 		return -EINVAL;
+
 	filp->f_pos = newpos;
+
 	return newpos;
 }
 
 static struct file_operations danube_eeprom_fops = {
       owner:THIS_MODULE,
       llseek:danube_eeprom_llseek,
-	/* llseek */
-      read:danube_eeprom_read,	/* read */
-      write:danube_eeprom_write,
-	/* write */
+      read:danube_eeprom_fops_read,
+      write:danube_eeprom_fops_write,
       ioctl:danube_eeprom_ioctl,
-	/* ioctl */
-      open:danube_eeprom_open,	/* open */
+      open:danube_eeprom_open,
       release:danube_eeprom_close,
-	/* release */
 };
 
 int __init
@@ -594,46 +560,37 @@ danube_eeprom_init (void)
 {
 	int ret = 0;
 
-	if ((ret = register_chrdev (maj, "eeprom", &danube_eeprom_fops)) < 0) {
-		printk ("Unable to register major %d for the Infineon Amazon EEPROM\n", maj);
-		if (maj == 0) {
-			goto errout;
-		}
-		else {
-			maj = 0;
-			if ((ret =
-			     register_chrdev (maj, "ssc",
-					      &danube_eeprom_fops)) < 0) {
-				printk ("Unable to register major 0 for the Infineon Amazon EEPROM\n");
-				goto errout;
-			}
-		}
+	danube_eeprom_maj = register_chrdev(0, "eeprom", &danube_eeprom_fops);
+
+	if (danube_eeprom_maj < 0)
+	{
+		printk("failed to register eeprom device\n");
+		ret = -EINVAL;
+		
+		goto out;
 	}
-	if (maj == 0)
-		maj = ret;
-      errout:
+
+	printk("danube_eeprom : /dev/eeprom mayor %d\n", danube_eeprom_maj);
+
+out:
 	return ret;
 }
 
 void __exit
 danube_eeprom_cleanup_module (void)
 {
-	if (unregister_chrdev (maj, "eeprom")) {
+	/*if (unregister_chrdev (danube_eeprom_maj, "eeprom")) {
 		printk ("Unable to unregister major %d for the EEPROM\n",
 			maj);
-	}
+	}*/
 }
 
 module_exit (danube_eeprom_cleanup_module);
 module_init (danube_eeprom_init);
 
-#ifndef MODULE
-static int __init
-danube_eeprom_set_maj (char *str)
-{
-	maj = simple_strtol (str, NULL, 0);
-	return 1;
-}
+MODULE_LICENSE ("GPL");
+MODULE_AUTHOR ("Peng Liu");
+MODULE_DESCRIPTION ("IFAP EEPROM driver");
+MODULE_SUPPORTED_DEVICE ("danube_eeprom");
+
 
-__setup ("eeprom_maj=", danube_eeprom_set_maj);
-#endif /* !MODULE */
diff --git a/target/linux/danube/files/drivers/char/danube_ssc.c b/target/linux/danube/files/drivers/char/danube_ssc.c
new file mode 100644
index 0000000000..cd0b4d387a
--- /dev/null
+++ b/target/linux/danube/files/drivers/char/danube_ssc.c
@@ -0,0 +1,2145 @@
+/*
+ *   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., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
+ *
+ *   Copyright (C) 2006 infineon
+ *   Copyright (C) 2007 John Crispin <blogic@openwrt.org> 
+ *
+ */
+
+// ### TO DO: general issues:
+//            - power management
+//            - interrupt handling (direct/indirect)
+//            - pin/mux-handling (just overall concept due to project dependency)
+//            - multiple instances capability
+//            - slave functionality
+
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/timer.h>
+#include <linux/interrupt.h>
+#include <linux/major.h>
+#include <linux/string.h>
+#include <linux/fs.h>
+#include <linux/proc_fs.h>
+#include <linux/fcntl.h>
+#include <linux/ptrace.h>
+#include <linux/mm.h>
+#include <linux/ioport.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/spinlock.h>
+#include <linux/slab.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/uaccess.h>
+#include <asm/bitops.h>
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/version.h>
+
+#include <asm/danube/danube.h>
+#include <asm/danube/danube_irq.h>
+#include <asm/danube/ifx_ssc_defines.h>
+#include <asm/danube/ifx_ssc.h>
+
+#ifdef SSC_FRAME_INT_ENABLE
+#undef SSC_FRAME_INT_ENABLE
+#endif
+
+#define not_yet
+
+#define SPI_VINETIC
+
+
+
+/* allow the user to set the major device number */
+static int maj = 0;
+
+/*
+ * This is the per-channel data structure containing pointers, flags
+ * and variables for the port. This driver supports a maximum of PORT_CNT.
+ * isp is allocated in ifx_ssc_init() based on the chip version.
+ */
+static struct ifx_ssc_port *isp;
+
+/* prototypes for fops */
+static ssize_t ifx_ssc_read (struct file *, char *, size_t, loff_t *);
+static ssize_t ifx_ssc_write (struct file *, const char *, size_t, loff_t *);
+//static unsigned int ifx_ssc_poll(struct file *, struct poll_table_struct *);
+int ifx_ssc_ioctl (struct inode *, struct file *, unsigned int,
+		   unsigned long);
+int ifx_ssc_open (struct inode *, struct file *);
+int ifx_ssc_close (struct inode *, struct file *);
+
+/* other forward declarations */
+static unsigned int ifx_ssc_get_kernel_clk (struct ifx_ssc_port *info);
+static void ifx_ssc_rx_int (int, void *, struct pt_regs *);
+static void ifx_ssc_tx_int (int, void *, struct pt_regs *);
+static void ifx_ssc_err_int (int, void *, struct pt_regs *);
+#ifdef SSC_FRAME_INT_ENABLE
+static void ifx_ssc_frm_int (int, void *, struct pt_regs *);
+#endif
+static void tx_int (struct ifx_ssc_port *);
+static int ifx_ssc1_read_proc (char *, char **, off_t, int, int *, void *);
+static void ifx_gpio_init (void);
+/************************************************************************
+ *  Function declaration
+ ************************************************************************/
+//interrupt.c
+extern unsigned int danube_get_fpi_hz (void);
+extern void disable_danube_irq (unsigned int irq_nr);
+extern void enable_danube_irq (unsigned int irq_nr);
+extern void mask_and_ack_danube_irq (unsigned int irq_nr);
+
+/*****************************************************************/
+typedef struct {
+	int (*request) (unsigned int, irq_handler_t handler,
+		unsigned long, const char *, void *);
+	void (*free) (unsigned int irq, void *dev_id);
+	void (*enable) (unsigned int irq);
+	void (*disable) (unsigned int irq);
+	void (*clear) (unsigned int irq);
+} ifx_int_wrapper_t;
+
+static ifx_int_wrapper_t ifx_int_wrapper = {
+      request:request_irq,	// IM action: enable int
+      free:free_irq,		// IM action: disable int
+      enable:enable_danube_irq,
+      disable:disable_danube_irq,
+      clear:mask_and_ack_danube_irq,
+	//end:          
+};
+
+/* Fops-struct */
+static struct file_operations ifx_ssc_fops = {
+      owner:THIS_MODULE,
+      read:ifx_ssc_read,	/* read */
+      write:ifx_ssc_write,	/* write */
+//        poll:         ifx_ssc_poll,    /* poll */
+      ioctl:ifx_ssc_ioctl,	/* ioctl */
+      open:ifx_ssc_open,	/* open */
+      release:ifx_ssc_close,	/* release */
+};
+
+static inline unsigned int
+ifx_ssc_get_kernel_clk (struct ifx_ssc_port *info)
+{				// ATTENTION: This function assumes that the CLC register is set with the 
+	// appropriate value for RMC.
+	unsigned int rmc;
+
+	rmc = (READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_CLC) &
+	       IFX_CLC_RUN_DIVIDER_MASK) >> IFX_CLC_RUN_DIVIDER_OFFSET;
+	if (rmc == 0) {
+		printk ("ifx_ssc_get_kernel_clk rmc==0 \n");
+		return (0);
+	}
+	return (danube_get_fpi_hz () / rmc);
+}
+
+#ifndef not_yet
+#ifdef IFX_SSC_INT_USE_BH
+/*
+ * This routine is used by the interrupt handler to schedule
+ * processing in the software interrupt portion of the driver
+ * (also known as the "bottom half").  This can be called any
+ * number of times for any channel without harm.
+ */
+static inline void
+ifx_ssc_sched_event (struct ifx_ssc_port *info, int event)
+{
+	info->event |= 1 << event;	/* remember what kind of event and who */
+	queue_task (&info->tqueue, &tq_cyclades);	/* it belongs to */
+	mark_bh (CYCLADES_BH);	/* then trigger event */
+}				/* ifx_ssc_sched_event */
+
+/*
+ * This routine is used to handle the "bottom half" processing for the
+ * serial driver, known also the "software interrupt" processing.
+ * This processing is done at the kernel interrupt level, after the
+ * cy#/_interrupt() has returned, BUT WITH INTERRUPTS TURNED ON.  This
+ * is where time-consuming activities which can not be done in the
+ * interrupt driver proper are done; the interrupt driver schedules
+ * them using ifx_ssc_sched_event(), and they get done here.
+ *
+ * This is done through one level of indirection--the task queue.
+ * When a hardware interrupt service routine wants service by the
+ * driver's bottom half, it enqueues the appropriate tq_struct (one
+ * per port) to the tq_cyclades work queue and sets a request flag
+ * via mark_bh for processing that queue.  When the time is right,
+ * do_ifx_ssc_bh is called (because of the mark_bh) and it requests
+ * that the work queue be processed.
+ *
+ * Although this may seem unwieldy, it gives the system a way to
+ * pass an argument (in this case the pointer to the ifx_ssc_port
+ * structure) to the bottom half of the driver.  Previous kernels
+ * had to poll every port to see if that port needed servicing.
+ */
+static void
+do_ifx_ssc_bh (void)
+{
+	run_task_queue (&tq_cyclades);
+}				/* do_ifx_ssc_bh */
+
+static void
+do_softint (void *private_)
+{
+	struct ifx_ssc_port *info = (struct ifx_ssc_port *) private_;
+
+	if (test_and_clear_bit (Cy_EVENT_HANGUP, &info->event)) {
+		wake_up_interruptible (&info->open_wait);
+		info->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CALLOUT_ACTIVE);
+	}
+	if (test_and_clear_bit (Cy_EVENT_OPEN_WAKEUP, &info->event)) {
+		wake_up_interruptible (&info->open_wait);
+	}
+	if (test_and_clear_bit (Cy_EVENT_DELTA_WAKEUP, &info->event)) {
+		wake_up_interruptible (&info->delta_msr_wait);
+	}
+	if (test_and_clear_bit (Cy_EVENT_WRITE_WAKEUP, &info->event)) {
+		wake_up_interruptible (&tty->write_wait);
+	}
+#ifdef Z_WAKE
+	if (test_and_clear_bit (Cy_EVENT_SHUTDOWN_WAKEUP, &info->event)) {
+		wake_up_interruptible (&info->shutdown_wait);
+	}
+#endif
+}				/* do_softint */
+#endif /* IFX_SSC_INT_USE_BH */
+#endif // not_yet
+
+inline static void
+rx_int (struct ifx_ssc_port *info)
+{
+	int fifo_fill_lev, bytes_in_buf, i;
+	unsigned long tmp_val;
+	unsigned long *tmp_ptr;
+	unsigned int rx_valid_cnt;
+	/* number of words waiting in the RX FIFO */
+	fifo_fill_lev = (READ_PERIPHERAL_REGISTER (info->mapbase +
+						   IFX_SSC_FSTAT) &
+			 IFX_SSC_FSTAT_RECEIVED_WORDS_MASK) >>
+		IFX_SSC_FSTAT_RECEIVED_WORDS_OFFSET;
+	// Note: There are always 32 bits in a fifo-entry except for the last 
+	// word of a contigous transfer block and except for not in rx-only 
+	// mode and CON.ENBV set. But for this case it should be a convention 
+	// in software which helps:
+	// In tx or rx/tx mode all transfers from the buffer to the FIFO are 
+	// 32-bit wide, except for the last three bytes, which could be a 
+	// combination of 16- and 8-bit access.
+	// => The whole block is received as 32-bit words as a contigous stream, 
+	// even if there was a gap in tx which has the fifo run out of data! 
+	// Just the last fifo entry *may* be partially filled (0, 1, 2 or 3 bytes)!
+
+	/* free space in the RX buffer */
+	bytes_in_buf = info->rxbuf_end - info->rxbuf_ptr;
+	// transfer with 32 bits per entry
+	while ((bytes_in_buf >= 4) && (fifo_fill_lev > 0)) {
+		tmp_ptr = (unsigned long *) info->rxbuf_ptr;
+		*tmp_ptr =
+			READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_RB);
+		info->rxbuf_ptr += 4;
+		info->stats.rxBytes += 4;
+		fifo_fill_lev--;
+		bytes_in_buf -= 4;
+	}			// while ((bytes_in_buf >= 4) && (fifo_fill_lev > 0))
+	// now do the rest as mentioned in STATE.RXBV
+	while ((bytes_in_buf > 0) && (fifo_fill_lev > 0)) {
+		rx_valid_cnt =
+			(READ_PERIPHERAL_REGISTER
+			 (info->mapbase +
+			  IFX_SSC_STATE) & IFX_SSC_STATE_RX_BYTE_VALID_MASK)
+			>> IFX_SSC_STATE_RX_BYTE_VALID_OFFSET;
+		if (rx_valid_cnt == 0)
+			break;
+		if (rx_valid_cnt > bytes_in_buf) {
+			// ### TO DO: warning message: not block aligned data, other data 
+			//                             in this entry will be lost
+			rx_valid_cnt = bytes_in_buf;
+		}
+		tmp_val =
+			READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_RB);
+
+		for (i = 0; i < rx_valid_cnt; i++) {
+			*info->rxbuf_ptr =
+				(tmp_val >> (8 * (rx_valid_cnt - i - 1))) &
+				0xff;
+/*			
+                        *info->rxbuf_ptr = tmp_val & 0xff;
+                        tmp_val >>= 8;
+*/
+			bytes_in_buf--;
+
+			info->rxbuf_ptr++;
+		}
+		info->stats.rxBytes += rx_valid_cnt;
+	}			// while ((bytes_in_buf > 0) && (fifo_fill_lev > 0))
+
+	// check if transfer is complete
+	if (info->rxbuf_ptr >= info->rxbuf_end) {
+		ifx_int_wrapper.disable (info->rxirq);
+		/* wakeup any processes waiting in read() */
+		wake_up_interruptible (&info->rwait);
+		/* and in poll() */
+		//wake_up_interruptible(&info->pwait);
+	}
+	else if ((info->opts.modeRxTx == IFX_SSC_MODE_RX) &&
+		 (READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_RXCNT) ==
+		  0)) {
+		// if buffer not filled completely and rx request done initiate new transfer
+/*
+		if  (info->rxbuf_end - info->rxbuf_ptr < 65536)
+*/
+		if (info->rxbuf_end - info->rxbuf_ptr <
+		    IFX_SSC_RXREQ_BLOCK_SIZE)
+			WRITE_PERIPHERAL_REGISTER ((info->rxbuf_end -
+						    info->
+						    rxbuf_ptr) <<
+						   IFX_SSC_RXREQ_RXCOUNT_OFFSET,
+						   info->mapbase +
+						   IFX_SSC_RXREQ);
+		else
+			WRITE_PERIPHERAL_REGISTER (IFX_SSC_RXREQ_BLOCK_SIZE <<
+						   IFX_SSC_RXREQ_RXCOUNT_OFFSET,
+						   info->mapbase +
+						   IFX_SSC_RXREQ);
+	}
+}				// rx_int
+
+inline static void
+tx_int (struct ifx_ssc_port *info)
+{
+
+	int fifo_space, fill, i;
+	fifo_space = ((READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_ID) &
+		       IFX_SSC_PERID_TXFS_MASK) >> IFX_SSC_PERID_TXFS_OFFSET)
+		-
+		((READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_FSTAT) &
+		  IFX_SSC_FSTAT_TRANSMIT_WORDS_MASK) >>
+		 IFX_SSC_FSTAT_TRANSMIT_WORDS_OFFSET);
+
+	if (fifo_space == 0)
+		return;
+
+	fill = info->txbuf_end - info->txbuf_ptr;
+
+	if (fill > fifo_space * 4)
+		fill = fifo_space * 4;
+
+	for (i = 0; i < fill / 4; i++) {
+		// at first 32 bit access
+		WRITE_PERIPHERAL_REGISTER (*(UINT32 *) info->txbuf_ptr,
+					   info->mapbase + IFX_SSC_TB);
+		info->txbuf_ptr += 4;
+	}
+
+	fifo_space -= fill / 4;
+	info->stats.txBytes += fill & ~0x3;
+	fill &= 0x3;
+	if ((fifo_space > 0) & (fill > 1)) {
+		// trailing 16 bit access
+		WRITE_PERIPHERAL_REGISTER_16 (*(UINT16 *) info->txbuf_ptr,
+					      info->mapbase + IFX_SSC_TB);
+		info->txbuf_ptr += 2;
+		info->stats.txBytes += 2;
+		fifo_space--;
+/* added by bingtao */
+		fill -= 2;
+	}
+	if ((fifo_space > 0) & (fill > 0)) {
+		// trailing 8 bit access
+		WRITE_PERIPHERAL_REGISTER_8 (*(UINT8 *) info->txbuf_ptr,
+					     info->mapbase + IFX_SSC_TB);
+		info->txbuf_ptr++;
+		info->stats.txBytes++;
+/*
+                fifo_space --;
+*/
+	}
+
+	// check if transmission complete
+	if (info->txbuf_ptr >= info->txbuf_end) {
+		ifx_int_wrapper.disable (info->txirq);
+		kfree (info->txbuf);
+		info->txbuf = NULL;
+		/* wake up any process waiting in poll() */
+		//wake_up_interruptible(&info->pwait);
+	}
+
+}				// tx_int
+
+static void
+ifx_ssc_rx_int (int irq, void *dev_id, struct pt_regs *regs)
+{
+	struct ifx_ssc_port *info = (struct ifx_ssc_port *) dev_id;
+	//WRITE_PERIPHERAL_REGISTER(IFX_SSC_R_BIT, info->mapbase + IFX_SSC_IRN_CR);
+	rx_int (info);
+}
+
+static void
+ifx_ssc_tx_int (int irq, void *dev_id, struct pt_regs *regs)
+{
+	struct ifx_ssc_port *info = (struct ifx_ssc_port *) dev_id;
+	//WRITE_PERIPHERAL_REGISTER(IFX_SSC_T_BIT, info->mapbase + IFX_SSC_IRN_CR);
+	tx_int (info);
+}
+
+static void
+ifx_ssc_err_int (int irq, void *dev_id, struct pt_regs *regs)
+{
+	struct ifx_ssc_port *info = (struct ifx_ssc_port *) dev_id;
+	unsigned int state;
+	unsigned int write_back = 0;
+	unsigned long flags;
+
+	local_irq_save (flags);
+	state = READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_STATE);
+
+	if ((state & IFX_SSC_STATE_RX_UFL) != 0) {
+		info->stats.rxUnErr++;
+		write_back |= IFX_SSC_WHBSTATE_CLR_RX_UFL_ERROR;
+	}
+	if ((state & IFX_SSC_STATE_RX_OFL) != 0) {
+		info->stats.rxOvErr++;
+		write_back |= IFX_SSC_WHBSTATE_CLR_RX_OFL_ERROR;
+	}
+	if ((state & IFX_SSC_STATE_TX_OFL) != 0) {
+		info->stats.txOvErr++;
+		write_back |= IFX_SSC_WHBSTATE_CLR_TX_OFL_ERROR;
+	}
+	if ((state & IFX_SSC_STATE_TX_UFL) != 0) {
+		info->stats.txUnErr++;
+		write_back |= IFX_SSC_WHBSTATE_CLR_TX_UFL_ERROR;
+	}
+//      if ((state & IFX_SSC_STATE_ABORT_ERR) != 0) {
+//              info->stats.abortErr++;
+//              write_back |= IFX_SSC_WHBSTATE_CLR_ABORT_ERROR;
+//      }
+	if ((state & IFX_SSC_STATE_MODE_ERR) != 0) {
+		info->stats.modeErr++;
+		write_back |= IFX_SSC_WHBSTATE_CLR_MODE_ERROR;
+	}
+
+	if (write_back)
+		WRITE_PERIPHERAL_REGISTER (write_back,
+					   info->mapbase + IFX_SSC_WHBSTATE);
+
+	local_irq_restore (flags);
+}
+
+#ifdef SSC_FRAME_INT_ENABLE
+static void
+ifx_ssc_frm_int (int irq, void *dev_id, struct pt_regs *regs)
+{
+	// ### TO DO: wake up framing wait-queue in conjunction with batch execution
+}
+#endif
+
+static void
+ifx_ssc_abort (struct ifx_ssc_port *info)
+{
+	unsigned long flags;
+	bool enabled;
+
+	local_irq_save (flags);
+
+	// disable all int's
+	ifx_int_wrapper.disable (info->rxirq);
+	ifx_int_wrapper.disable (info->txirq);
+	ifx_int_wrapper.disable (info->errirq);
+/*
+	ifx_int_wrapper.disable(info->frmirq);
+*/
+	local_irq_restore (flags);
+
+	// disable SSC (also aborts a receive request!)
+	// ### TO DO: Perhaps it's better to abort after the receiption of a 
+	// complete word. The disable cuts the transmission immediatly and 
+	// releases the chip selects. This could result in unpredictable 
+	// behavior of connected external devices!
+	enabled = (READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_STATE)
+		   & IFX_SSC_STATE_IS_ENABLED) != 0;
+	WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_CLR_ENABLE,
+				   info->mapbase + IFX_SSC_WHBSTATE);
+
+	// flush fifos
+	WRITE_PERIPHERAL_REGISTER (IFX_SSC_XFCON_FIFO_FLUSH,
+				   info->mapbase + IFX_SSC_TXFCON);
+	WRITE_PERIPHERAL_REGISTER (IFX_SSC_XFCON_FIFO_FLUSH,
+				   info->mapbase + IFX_SSC_RXFCON);
+
+	// free txbuf
+	if (info->txbuf != NULL) {
+		kfree (info->txbuf);
+		info->txbuf = NULL;
+	}
+
+	// wakeup read process
+	if (info->rxbuf != NULL)
+		wake_up_interruptible (&info->rwait);
+
+	// clear pending int's 
+	ifx_int_wrapper.clear (info->rxirq);
+	ifx_int_wrapper.clear (info->txirq);
+	ifx_int_wrapper.clear (info->errirq);
+/*
+	ifx_int_wrapper.clear(info->frmirq);
+*/
+
+	// clear error flags
+	WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_CLR_ALL_ERROR,
+				   info->mapbase + IFX_SSC_WHBSTATE);
+
+	//printk("IFX SSC%d: Transmission aborted\n", info->port_nr);
+	// enable SSC
+	if (enabled)
+		WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_SET_ENABLE,
+					   info->mapbase + IFX_SSC_WHBSTATE);
+
+}				// ifx_ssc_abort
+
+/*
+ * This routine is called whenever a port is opened.  It enforces
+ * exclusive opening of a port and enables interrupts, etc.
+ */
+int
+ifx_ssc_open (struct inode *inode, struct file *filp)
+{
+	struct ifx_ssc_port *info;
+	int line;
+	int from_kernel = 0;
+
+	if ((inode == (struct inode *) 0) || (inode == (struct inode *) 1)) {
+		from_kernel = 1;
+		line = (int) inode;
+	}
+	else {
+		line = MINOR (filp->f_dentry->d_inode->i_rdev);
+		filp->f_op = &ifx_ssc_fops;
+	}
+
+	/* don't open more minor devices than we can support */
+	if (line < 0 || line >= PORT_CNT)
+		return -ENXIO;
+
+	info = &isp[line];
+
+	/* exclusive open */
+	if (info->port_is_open != 0)
+		return -EBUSY;
+	info->port_is_open++;
+
+	ifx_int_wrapper.disable (info->rxirq);
+	ifx_int_wrapper.disable (info->txirq);
+	ifx_int_wrapper.disable (info->errirq);
+/*
+	ifx_int_wrapper.disable(info->frmirq);
+*/
+
+	/* Flush and enable TX/RX FIFO */
+	WRITE_PERIPHERAL_REGISTER ((IFX_SSC_DEF_TXFIFO_FL <<
+				    IFX_SSC_XFCON_ITL_OFFSET) |
+				   IFX_SSC_XFCON_FIFO_FLUSH |
+				   IFX_SSC_XFCON_FIFO_ENABLE,
+				   info->mapbase + IFX_SSC_TXFCON);
+	WRITE_PERIPHERAL_REGISTER ((IFX_SSC_DEF_RXFIFO_FL <<
+				    IFX_SSC_XFCON_ITL_OFFSET) |
+				   IFX_SSC_XFCON_FIFO_FLUSH |
+				   IFX_SSC_XFCON_FIFO_ENABLE,
+				   info->mapbase + IFX_SSC_RXFCON);
+
+	/* logically flush the software FIFOs */
+	info->rxbuf_ptr = 0;
+	info->txbuf_ptr = 0;
+
+	/* clear all error bits */
+	WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_CLR_ALL_ERROR,
+				   info->mapbase + IFX_SSC_WHBSTATE);
+
+	// clear pending interrupts
+	ifx_int_wrapper.clear (info->rxirq);
+	ifx_int_wrapper.clear (info->txirq);
+	ifx_int_wrapper.clear (info->errirq);
+/*
+	ifx_int_wrapper.clear(info->frmirq);
+*/
+
+	// enable SSC
+	WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_SET_ENABLE,
+				   info->mapbase + IFX_SSC_WHBSTATE);
+
+	return 0;
+}				/* ifx_ssc_open */
+
+EXPORT_SYMBOL (ifx_ssc_open);
+
+/*
+ * This routine is called when a particular device is closed.
+ */
+int
+ifx_ssc_close (struct inode *inode, struct file *filp)
+{
+	struct ifx_ssc_port *info;
+	int idx;
+
+	if ((inode == (struct inode *) 0) || (inode == (struct inode *) 1))
+		idx = (int) inode;
+	else
+		idx = MINOR (filp->f_dentry->d_inode->i_rdev);
+
+	if (idx < 0 || idx >= PORT_CNT)
+		return -ENXIO;
+
+	info = &isp[idx];
+	if (!info)
+		return -ENXIO;
+
+	// disable SSC
+	WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_CLR_ENABLE,
+				   info->mapbase + IFX_SSC_WHBSTATE);
+
+	// call abort function to disable int's, flush fifos...
+	ifx_ssc_abort (info);
+
+	info->port_is_open--;
+
+	return 0;
+}				/* ifx_ssc_close */
+
+EXPORT_SYMBOL (ifx_ssc_close);
+
+/* added by bingtao */
+/* helper routine to handle reads from the kernel or user-space */
+/* info->rxbuf : never kfree and contains valid data */
+/* should be points to NULL after copying data !!! */
+static ssize_t
+ifx_ssc_read_helper_poll (struct ifx_ssc_port *info, char *buf, size_t len,
+			  int from_kernel)
+{
+	ssize_t ret_val;
+	unsigned long flags;
+
+	if (info->opts.modeRxTx == IFX_SSC_MODE_TX)
+		return -EFAULT;
+	local_irq_save (flags);
+	info->rxbuf_ptr = info->rxbuf;
+	info->rxbuf_end = info->rxbuf + len;
+	local_irq_restore (flags);
+	/* Vinetic driver always works in IFX_SSC_MODE_RXTX */
+	/* TXRX in poll mode */
+	while (info->rxbuf_ptr < info->rxbuf_end) {
+		/* This is the key point, if you don't check this condition 
+		   kfree (NULL) will happen 
+		   because tx only need write into FIFO, it's much fast than rx
+		   So when rx still waiting , tx already finish and release buf     
+		 */
+		if (info->txbuf_ptr < info->txbuf_end) {
+			tx_int (info);
+		}
+
+		rx_int (info);
+	};
+
+	ret_val = info->rxbuf_ptr - info->rxbuf;
+	return (ret_val);
+}				// ifx_ssc_read_helper_poll
+
+/* helper routine to handle reads from the kernel or user-space */
+/* info->rx_buf : never kfree and contains valid data */
+/* should be points to NULL after copying data !!! */
+static ssize_t
+ifx_ssc_read_helper (struct ifx_ssc_port *info, char *buf, size_t len,
+		     int from_kernel)
+{
+	ssize_t ret_val;
+	unsigned long flags;
+	DECLARE_WAITQUEUE (wait, current);
+
+	if (info->opts.modeRxTx == IFX_SSC_MODE_TX)
+		return -EFAULT;
+	local_irq_save (flags);
+	info->rxbuf_ptr = info->rxbuf;
+	info->rxbuf_end = info->rxbuf + len;
+	if (info->opts.modeRxTx == IFX_SSC_MODE_RXTX) {
+		if ((info->txbuf == NULL) ||
+		    (info->txbuf != info->txbuf_ptr) ||
+		    (info->txbuf_end != len + info->txbuf)) {
+			local_irq_restore (flags);
+			printk ("IFX SSC - %s: write must be called before calling " "read in combined RX/TX!\n", __FUNCTION__);
+			return -EFAULT;
+		}
+		local_irq_restore (flags);
+		/* should enable tx, right? */
+		tx_int (info);
+		if (info->txbuf_ptr < info->txbuf_end) {
+			ifx_int_wrapper.enable (info->txirq);
+		}
+
+		ifx_int_wrapper.enable (info->rxirq);
+	}
+	else {			// rx mode
+		local_irq_restore (flags);
+		if (READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_RXCNT) &
+		    IFX_SSC_RXCNT_TODO_MASK)
+			return -EBUSY;
+		ifx_int_wrapper.enable (info->rxirq);
+		// rx request limited to ' bytes
+/*
+                if (len < 65536)
+*/
+		if (len < IFX_SSC_RXREQ_BLOCK_SIZE)
+			WRITE_PERIPHERAL_REGISTER (len <<
+						   IFX_SSC_RXREQ_RXCOUNT_OFFSET,
+						   info->mapbase +
+						   IFX_SSC_RXREQ);
+		else
+			WRITE_PERIPHERAL_REGISTER (IFX_SSC_RXREQ_BLOCK_SIZE <<
+						   IFX_SSC_RXREQ_RXCOUNT_OFFSET,
+						   info->mapbase +
+						   IFX_SSC_RXREQ);
+	}
+
+	__add_wait_queue (&info->rwait, &wait);
+	set_current_state (TASK_INTERRUPTIBLE);
+	// wakeup done in rx_int
+
+	do {
+		local_irq_save (flags);
+		if (info->rxbuf_ptr >= info->rxbuf_end)
+			break;
+		local_irq_restore (flags);
+
+//                if (filp->f_flags & O_NONBLOCK)
+//                {
+//                        N = -EAGAIN;
+//                        goto out;
+//                }
+		if (signal_pending (current)) {
+			ret_val = -ERESTARTSYS;
+			goto out;
+		}
+		schedule ();
+	} while (1);
+
+	ret_val = info->rxbuf_ptr - info->rxbuf;	// should be equal to len
+	local_irq_restore (flags);
+
+      out:
+	current->state = TASK_RUNNING;
+	__remove_wait_queue (&info->rwait, &wait);
+	return (ret_val);
+}				// ifx_ssc_read_helper
+
+#if 0
+/* helper routine to handle reads from the kernel or user-space */
+/* appropriate in interrupt context */
+static ssize_t
+ifx_ssc_read_helper (struct ifx_ssc_port *info, char *buf, size_t len,
+		     int from_kernel)
+{
+	ssize_t ret_val;
+	unsigned long flags;
+	DECLARE_WAITQUEUE (wait, current);
+
+	if (info->opts.modeRxTx == IFX_SSC_MODE_TX)
+		return -EFAULT;
+	local_irq_save (flags);
+	info->rxbuf_ptr = info->rxbuf;
+	info->rxbuf_end = info->rxbuf + len;
+	if (info->opts.modeRxTx == IFX_SSC_MODE_RXTX) {
+		if ((info->txbuf == NULL) ||
+		    (info->txbuf != info->txbuf_ptr) ||
+		    (info->txbuf_end != len + info->txbuf)) {
+			local_irq_restore (flags);
+			printk ("IFX SSC - %s: write must be called before calling " "read in combined RX/TX!\n", __FUNCTION__);
+			return -EFAULT;
+		}
+		local_irq_restore (flags);
+		/* should enable tx, right? */
+		tx_int (info);
+		if (!in_irq ()) {
+			if (info->txbuf_ptr < info->txbuf_end) {
+				ifx_int_wrapper.enable (info->txirq);
+			}
+			ifx_int_wrapper.enable (info->rxirq);
+		}
+	}
+	else {			// rx mode
+		local_irq_restore (flags);
+		if (READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_RXCNT) &
+		    IFX_SSC_RXCNT_TODO_MASK)
+			return -EBUSY;
+		if (!in_irq ()) {
+			ifx_int_wrapper.enable (info->rxirq);
+		}
+
+		if (len < IFX_SSC_RXREQ_BLOCK_SIZE)
+			WRITE_PERIPHERAL_REGISTER (len <<
+						   IFX_SSC_RXREQ_RXCOUNT_OFFSET,
+						   info->mapbase +
+						   IFX_SSC_RXREQ);
+		else
+			WRITE_PERIPHERAL_REGISTER (IFX_SSC_RXREQ_BLOCK_SIZE <<
+						   IFX_SSC_RXREQ_RXCOUNT_OFFSET,
+						   info->mapbase +
+						   IFX_SSC_RXREQ);
+	}
+	if (in_irq ()) {
+		do {
+			rx_int (info);
+			if (info->opts.modeRxTx == IFX_SSC_MODE_RXTX) {
+				tx_int (info);
+			}
+
+			if (info->rxbuf_ptr >= info->rxbuf_end)
+				break;
+		} while (1);
+		ret_val = info->rxbuf_ptr - info->rxbuf;
+	}
+	else {
+		__add_wait_queue (&info->rwait, &wait);
+		set_current_state (TASK_INTERRUPTIBLE);
+		// wakeup done in rx_int
+
+		do {
+			local_irq_save (flags);
+			if (info->rxbuf_ptr >= info->rxbuf_end)
+				break;
+			local_irq_restore (flags);
+
+			if (signal_pending (current)) {
+				ret_val = -ERESTARTSYS;
+				goto out;
+			}
+			schedule ();
+		} while (1);
+
+		ret_val = info->rxbuf_ptr - info->rxbuf;	// should be equal to len
+		local_irq_restore (flags);
+
+	      out:
+		current->state = TASK_RUNNING;
+		__remove_wait_queue (&info->rwait, &wait);
+	}
+	return (ret_val);
+}				// ifx_ssc_read_helper
+#endif
+
+/* helper routine to handle writes to the kernel or user-space */
+/* info->txbuf has two cases:
+ *	1) return value < 0 (-EFAULT), not touched at all
+ *	2) kfree and points to NULL in interrupt routine (but maybe later )
+ */
+static ssize_t
+ifx_ssc_write_helper (struct ifx_ssc_port *info, const char *buf,
+		      size_t len, int from_kernel)
+{
+	// check if in tx or tx/rx mode
+	if (info->opts.modeRxTx == IFX_SSC_MODE_RX)
+		return -EFAULT;
+
+	info->txbuf_ptr = info->txbuf;
+	info->txbuf_end = len + info->txbuf;
+	/* start the transmission (not in rx/tx, see read helper) */
+	if (info->opts.modeRxTx == IFX_SSC_MODE_TX) {
+		tx_int (info);
+		if (info->txbuf_ptr < info->txbuf_end) {
+			ifx_int_wrapper.enable (info->txirq);
+		}
+	}
+	//local_irq_restore(flags);
+	return len;
+}
+
+/*
+ * kernel interfaces for read and write.
+ * The caller must set port to: n for SSC<m> with n=m-1 (e.g. n=0 for SSC1)
+ */
+ssize_t
+ifx_ssc_kread (int port, char *kbuf, size_t len)
+{
+	struct ifx_ssc_port *info;
+	ssize_t ret_val;
+
+	if (port < 0 || port >= PORT_CNT)
+		return -ENXIO;
+
+	if (len == 0)
+		return 0;
+
+	info = &isp[port];
+
+	// check if reception in progress
+	if (info->rxbuf != NULL) {
+		printk ("SSC device busy\n");
+		return -EBUSY;
+	}
+
+	info->rxbuf = kbuf;
+	if (info->rxbuf == NULL) {
+		printk ("SSC device error\n");
+		return -EINVAL;
+	}
+
+/* changed by bingtao */
+	/* change by TaiCheng */
+	//if (!in_irq()){
+	if (0) {
+		ret_val = ifx_ssc_read_helper (info, kbuf, len, 1);
+	}
+	else {
+		ret_val = ifx_ssc_read_helper_poll (info, kbuf, len, 1);
+	};
+	info->rxbuf = NULL;
+
+	// ### TO DO: perhaps warn if ret_val != len
+	ifx_int_wrapper.disable (info->rxirq);
+
+	return (ret_val);
+}				// ifx_ssc_kread
+
+EXPORT_SYMBOL (ifx_ssc_kread);
+
+ssize_t
+ifx_ssc_kwrite (int port, const char *kbuf, size_t len)
+{
+	struct ifx_ssc_port *info;
+	ssize_t ret_val;
+
+	if (port < 0 || port >= PORT_CNT)
+		return -ENXIO;
+
+	if (len == 0)
+		return 0;
+
+	info = &isp[port];
+
+	// check if transmission in progress
+	if (info->txbuf != NULL)
+		return -EBUSY;
+	info->txbuf = (char *) kbuf;
+
+	ret_val = ifx_ssc_write_helper (info, info->txbuf, len, 1);
+	if (ret_val < 0) {
+		info->txbuf = NULL;
+	}
+	return ret_val;
+}
+
+EXPORT_SYMBOL (ifx_ssc_kwrite);
+
+/* 
+ * user interfaces to read and write
+ */
+static ssize_t
+ifx_ssc_read (struct file *filp, char *ubuf, size_t len, loff_t * off)
+{
+	ssize_t ret_val;
+	int idx;
+	struct ifx_ssc_port *info;
+
+/*
+        if (len == 0)
+                return (0);
+*/
+	idx = MINOR (filp->f_dentry->d_inode->i_rdev);
+	info = &isp[idx];
+
+	// check if reception in progress
+	if (info->rxbuf != NULL)
+		return -EBUSY;
+
+	info->rxbuf = kmalloc (len + 3, GFP_KERNEL);
+	if (info->rxbuf == NULL)
+		return -ENOMEM;
+
+	ret_val = ifx_ssc_read_helper (info, info->rxbuf, len, 0);
+	// ### TO DO: perhaps warn if ret_val != len
+	if (copy_to_user ((void *) ubuf, info->rxbuf, ret_val) != 0)
+		ret_val = -EFAULT;
+
+	ifx_int_wrapper.disable (info->rxirq);
+
+	kfree (info->rxbuf);
+	info->rxbuf = NULL;
+	return (ret_val);
+}				// ifx_ssc_read
+
+/*
+ * As many bytes as we have free space for are copied from the user
+ * into txbuf and the actual byte count is returned. The transmission is
+ * always kicked off by calling the appropriate TX routine.
+ */
+static ssize_t
+ifx_ssc_write (struct file *filp, const char *ubuf, size_t len, loff_t * off)
+{
+	int idx;
+	struct ifx_ssc_port *info;
+	int ret_val;
+
+	if (len == 0)
+		return (0);
+
+	idx = MINOR (filp->f_dentry->d_inode->i_rdev);
+	info = &isp[idx];
+
+	// check if transmission in progress
+	if (info->txbuf != NULL)
+		return -EBUSY;
+
+	info->txbuf = kmalloc (len + 3, GFP_KERNEL);
+	if (info->txbuf == NULL)
+		return -ENOMEM;
+
+	ret_val = copy_from_user (info->txbuf, ubuf, len);
+	if (ret_val == 0)
+		ret_val = ifx_ssc_write_helper (info, info->txbuf, len, 0);
+	else
+		ret_val = -EFAULT;
+	if (ret_val < 0) {
+		kfree (info->txbuf);	// otherwise will be done in ISR
+		info->txbuf = NULL;
+	}
+	return (ret_val);
+}				/* ifx_ssc_write */
+
+/*
+ * ------------------------------------------------------------
+ * ifx_ssc_ioctl() and friends
+ * ------------------------------------------------------------
+ */
+
+/*-----------------------------------------------------------------------------
+ FUNC-NAME  : ifx_ssc_frm_status_get
+ LONG-NAME  : framing status get
+ PURPOSE    : Get the actual status of the framing.
+
+ PARAMETER  : *info	pointer to the port-specific structure ifx_ssc_port.
+
+ RESULT     : pointer to a structure ifx_ssc_frm_status which holds busy and 
+	      count values.
+
+ REMARKS    : Returns a register value independent of framing is enabled or 
+	      not! Changes structure inside of info, so the return value isn't 
+	      needed at all, but could be used for simple access.
+-----------------------------------------------------------------------------*/
+static struct ifx_ssc_frm_status *
+ifx_ssc_frm_status_get (struct ifx_ssc_port *info)
+{
+	unsigned long tmp;
+
+	tmp = READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_SFSTAT);
+	info->frm_status.DataBusy = (tmp & IFX_SSC_SFSTAT_IN_DATA) > 0;
+	info->frm_status.PauseBusy = (tmp & IFX_SSC_SFSTAT_IN_PAUSE) > 0;
+	info->frm_status.DataCount = (tmp & IFX_SSC_SFSTAT_DATA_COUNT_MASK)
+		>> IFX_SSC_SFSTAT_DATA_COUNT_OFFSET;
+	info->frm_status.PauseCount = (tmp & IFX_SSC_SFSTAT_PAUSE_COUNT_MASK)
+		>> IFX_SSC_SFSTAT_PAUSE_COUNT_OFFSET;
+	tmp = READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_SFCON);
+	info->frm_status.EnIntAfterData =
+		(tmp & IFX_SSC_SFCON_FIR_ENABLE_BEFORE_PAUSE) > 0;
+	info->frm_status.EnIntAfterPause =
+		(tmp & IFX_SSC_SFCON_FIR_ENABLE_AFTER_PAUSE) > 0;
+	return (&info->frm_status);
+}				// ifx_ssc_frm_status_get
+
+/*-----------------------------------------------------------------------------
+ FUNC-NAME  : ifx_ssc_frm_control_get
+ LONG-NAME  : framing control get
+ PURPOSE    : Get the actual control values of the framing.
+
+ PARAMETER  : *info	pointer to the port-specific structure ifx_ssc_port.
+
+ RESULT     : pointer to a structure ifx_ssc_frm_opts which holds control bits  
+	      and count reload values.
+
+ REMARKS    : Changes structure inside of info, so the return value isn't 
+	      needed at all, but could be used for simple access.
+-----------------------------------------------------------------------------*/
+static struct ifx_ssc_frm_opts *
+ifx_ssc_frm_control_get (struct ifx_ssc_port *info)
+{
+	unsigned long tmp;
+
+	tmp = READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_SFCON);
+	info->frm_opts.FrameEnable = (tmp & IFX_SSC_SFCON_SF_ENABLE) > 0;
+	info->frm_opts.DataLength = (tmp & IFX_SSC_SFCON_DATA_LENGTH_MASK)
+		>> IFX_SSC_SFCON_DATA_LENGTH_OFFSET;
+	info->frm_opts.PauseLength = (tmp & IFX_SSC_SFCON_PAUSE_LENGTH_MASK)
+		>> IFX_SSC_SFCON_PAUSE_LENGTH_OFFSET;
+	info->frm_opts.IdleData = (tmp & IFX_SSC_SFCON_PAUSE_DATA_MASK)
+		>> IFX_SSC_SFCON_PAUSE_DATA_OFFSET;
+	info->frm_opts.IdleClock = (tmp & IFX_SSC_SFCON_PAUSE_CLOCK_MASK)
+		>> IFX_SSC_SFCON_PAUSE_CLOCK_OFFSET;
+	info->frm_opts.StopAfterPause =
+		(tmp & IFX_SSC_SFCON_STOP_AFTER_PAUSE) > 0;
+	return (&info->frm_opts);
+}				// ifx_ssc_frm_control_get
+
+/*-----------------------------------------------------------------------------
+ FUNC-NAME  : ifx_ssc_frm_control_set
+ LONG-NAME  : framing control set
+ PURPOSE    : Set the actual control values of the framing.
+
+ PARAMETER  : *info	pointer to the port-specific structure ifx_ssc_port.
+
+ RESULT     : pointer to a structure ifx_ssc_frm_opts which holds control bits  
+	      and count reload values.
+
+ REMARKS    : 
+-----------------------------------------------------------------------------*/
+static int
+ifx_ssc_frm_control_set (struct ifx_ssc_port *info)
+{
+	unsigned long tmp;
+
+	// check parameters
+	if ((info->frm_opts.DataLength > IFX_SSC_SFCON_DATA_LENGTH_MAX) ||
+	    (info->frm_opts.DataLength < 1) ||
+	    (info->frm_opts.PauseLength > IFX_SSC_SFCON_PAUSE_LENGTH_MAX) ||
+	    (info->frm_opts.PauseLength < 1) ||
+	    ((info->frm_opts.IdleData & ~(IFX_SSC_SFCON_PAUSE_DATA_MASK >>
+					  IFX_SSC_SFCON_PAUSE_DATA_OFFSET)) !=
+	     0)
+	    ||
+	    ((info->frm_opts.
+	      IdleClock & ~(IFX_SSC_SFCON_PAUSE_CLOCK_MASK >>
+			    IFX_SSC_SFCON_PAUSE_CLOCK_OFFSET)) != 0))
+		return -EINVAL;
+
+	// read interrupt bits (they're not changed here)
+	tmp = READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_SFCON) &
+		(IFX_SSC_SFCON_FIR_ENABLE_BEFORE_PAUSE |
+		 IFX_SSC_SFCON_FIR_ENABLE_AFTER_PAUSE);
+
+	// set all values with respect to it's bit position (for data and pause 
+	// length set N-1)
+	tmp = (info->frm_opts.DataLength -
+	       1) << IFX_SSC_SFCON_DATA_LENGTH_OFFSET;
+	tmp |= (info->frm_opts.PauseLength -
+		1) << IFX_SSC_SFCON_PAUSE_LENGTH_OFFSET;
+	tmp |= info->frm_opts.IdleData << IFX_SSC_SFCON_PAUSE_DATA_OFFSET;
+	tmp |= info->frm_opts.IdleClock << IFX_SSC_SFCON_PAUSE_CLOCK_OFFSET;
+	tmp |= info->frm_opts.FrameEnable * IFX_SSC_SFCON_SF_ENABLE;
+	tmp |= info->frm_opts.StopAfterPause * IFX_SSC_SFCON_STOP_AFTER_PAUSE;
+
+	WRITE_PERIPHERAL_REGISTER (tmp, info->mapbase + IFX_SSC_SFCON);
+
+	return 0;
+}				// ifx_ssc_frm_control_set
+
+/*-----------------------------------------------------------------------------
+ FUNC-NAME  : ifx_ssc_rxtx_mode_set
+ LONG-NAME  : rxtx mode set
+ PURPOSE    : Set the transmission mode.
+
+ PARAMETER  : *info	pointer to the port-specific structure ifx_ssc_port.
+
+ RESULT     : Returns error code
+
+ REMARKS    : Assumes that SSC not used (SSC disabled, device not opened yet 
+	      or just closed) 
+-----------------------------------------------------------------------------*/
+static int
+ifx_ssc_rxtx_mode_set (struct ifx_ssc_port *info, unsigned int val)
+{
+	unsigned long tmp;
+
+	// check parameters
+	if (!(info) || (val & ~(IFX_SSC_MODE_MASK)))
+		return -EINVAL;
+	/*check BUSY and RXCNT */
+	if (READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_STATE) &
+	    IFX_SSC_STATE_BUSY
+	    || READ_PERIPHERAL_REGISTER (info->mapbase +
+					 IFX_SSC_RXCNT) &
+	    IFX_SSC_RXCNT_TODO_MASK)
+		return -EBUSY;
+	// modify 
+	tmp = (READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_CON) &
+	       ~(IFX_SSC_CON_RX_OFF | IFX_SSC_CON_TX_OFF)) | (val);
+	WRITE_PERIPHERAL_REGISTER (tmp, info->mapbase + IFX_SSC_CON);
+	info->opts.modeRxTx = val;
+/*	
+	printk(KERN_DEBUG "IFX SSC%d: Setting mode to %s%s\n", 
+	       info->port_nr,
+	       ((val & IFX_SSC_CON_RX_OFF) == 0) ? "rx ":"", 
+	       ((val & IFX_SSC_CON_TX_OFF) == 0) ? "tx":"");
+*/
+	return 0;
+}				// ifx_ssc_rxtx_mode_set
+
+void
+ifx_gpio_init (void)
+{
+	/* TODO: P0.9 SPI_CS4, P0.10 SPI_CS5, P 0.11 SPI_CS6, because of ASC0 */
+	/* p0.15 SPI_CS1(EEPROM), P0.13 SPI_CS3, */
+	/* Set p0.15 to alternative 01, others to 00 (In/OUT) */
+	*(DANUBE_GPIO_P0_DIR) = (*DANUBE_GPIO_P0_DIR) | (0xA000);
+	*(DANUBE_GPIO_P0_ALTSEL0) =
+		(((*DANUBE_GPIO_P0_ALTSEL0) | (0x8000)) & (~(0x2000)));
+	*(DANUBE_GPIO_P0_ALTSEL1) =
+		(((*DANUBE_GPIO_P0_ALTSEL1) & (~0x8000)) & (~(0x2000)));
+	*(DANUBE_GPIO_P0_OD) = (*DANUBE_GPIO_P0_OD) | 0xA000;
+
+	/* p1.6 SPI_CS2(SFLASH), p1.0 SPI_DIN, p1.1 SPI_DOUT, p1.2 SPI_CLK */
+	*(DANUBE_GPIO_P1_DIR) = ((*DANUBE_GPIO_P1_DIR) | (0x46)) & (~1);
+	*(DANUBE_GPIO_P1_ALTSEL0) = ((*DANUBE_GPIO_P1_ALTSEL0) | (0x47));
+	*(DANUBE_GPIO_P1_ALTSEL1) = (*DANUBE_GPIO_P1_ALTSEL1) & (~0x47);
+	*(DANUBE_GPIO_P1_OD) = (*DANUBE_GPIO_P1_OD) | 0x0046;
+
+	/*CS3 */
+	/*TODO: CS4 CS5 CS6 */
+	*DANUBE_GPIO_P0_OUT = ((*DANUBE_GPIO_P0_OUT) | 0x2000);
+
+}
+
+/*
+ * This routine intializes the SSC appropriately depending
+ * on slave/master and full-/half-duplex mode.
+ * It assumes that the SSC is disabled and the fifo's and buffers 
+ * are flushes later on.
+ */
+static int
+ifx_ssc_sethwopts (struct ifx_ssc_port *info)
+{
+	unsigned long flags, bits;
+	struct ifx_ssc_hwopts *opts = &info->opts;
+
+	/* sanity checks */
+	if ((opts->dataWidth < IFX_SSC_MIN_DATA_WIDTH) ||
+	    (opts->dataWidth > IFX_SSC_MAX_DATA_WIDTH)) {
+		printk ("%s: sanity check failed\n", __FUNCTION__);
+		return -EINVAL;
+	}
+	bits = (opts->dataWidth - 1) << IFX_SSC_CON_DATA_WIDTH_OFFSET;
+	bits |= IFX_SSC_CON_ENABLE_BYTE_VALID;
+	//    if (opts->abortErrDetect)
+	//            bits |= IFX_SSC_CON_ABORT_ERR_CHECK;
+	if (opts->rxOvErrDetect)
+		bits |= IFX_SSC_CON_RX_OFL_CHECK;
+	if (opts->rxUndErrDetect)
+		bits |= IFX_SSC_CON_RX_UFL_CHECK;
+	if (opts->txOvErrDetect)
+		bits |= IFX_SSC_CON_TX_OFL_CHECK;
+	if (opts->txUndErrDetect)
+		bits |= IFX_SSC_CON_TX_UFL_CHECK;
+	if (opts->loopBack)
+		bits |= IFX_SSC_CON_LOOPBACK_MODE;
+	if (opts->echoMode)
+		bits |= IFX_SSC_CON_ECHO_MODE_ON;
+	if (opts->headingControl)
+		bits |= IFX_SSC_CON_MSB_FIRST;
+	if (opts->clockPhase)
+		bits |= IFX_SSC_CON_LATCH_THEN_SHIFT;
+	if (opts->clockPolarity)
+		bits |= IFX_SSC_CON_CLOCK_FALL;
+	switch (opts->modeRxTx) {
+	case IFX_SSC_MODE_TX:
+		bits |= IFX_SSC_CON_RX_OFF;
+		break;
+	case IFX_SSC_MODE_RX:
+		bits |= IFX_SSC_CON_TX_OFF;
+		break;
+	}			// switch (opts->modeRxT)
+	local_irq_save (flags);
+	WRITE_PERIPHERAL_REGISTER (bits, info->mapbase + IFX_SSC_CON);
+	WRITE_PERIPHERAL_REGISTER ((info->opts.
+				    gpoCs << IFX_SSC_GPOCON_ISCSB0_POS) |
+				   (info->opts.
+				    gpoInv << IFX_SSC_GPOCON_INVOUT0_POS),
+				   info->mapbase + IFX_SSC_GPOCON);
+	/*TODO: disable cs */
+	WRITE_PERIPHERAL_REGISTER (info->opts.
+				   gpoCs << IFX_SSC_WHBGPOSTAT_SETOUT0_POS,
+				   info->mapbase + IFX_SSC_WHBGPOSTAT);
+
+	//master mode
+	if (opts->masterSelect) {
+		WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_SET_MASTER_SELECT,
+					   info->mapbase + IFX_SSC_WHBSTATE);
+	}
+	else {
+		WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_CLR_MASTER_SELECT,
+					   info->mapbase + IFX_SSC_WHBSTATE);
+	}
+	// init serial framing
+	WRITE_PERIPHERAL_REGISTER (0, info->mapbase + IFX_SSC_SFCON);
+	/* set up the port pins */
+	//check for general requirements to switch (external) pad/pin characteristics
+	ifx_gpio_init ();
+	local_irq_restore (flags);
+
+	return 0;
+}				// ifx_ssc_sethwopts
+
+static int
+ifx_ssc_set_baud (struct ifx_ssc_port *info, unsigned int baud)
+{
+	unsigned int ifx_ssc_clock;
+	unsigned int br;
+	unsigned long flags;
+	bool enabled;
+
+	ifx_ssc_clock = ifx_ssc_get_kernel_clk (info);
+	if (ifx_ssc_clock == 0)
+		return -EINVAL;
+	local_irq_save (flags);
+	/* have to disable the SSC to set the baudrate */
+	enabled = (READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_STATE)
+		   & IFX_SSC_STATE_IS_ENABLED) != 0;
+	WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_CLR_ENABLE,
+				   info->mapbase + IFX_SSC_WHBSTATE);
+
+	// compute divider
+	br = (((ifx_ssc_clock >> 1) + baud / 2) / baud) - 1;
+	asm ("SYNC");
+	if (br > 0xffff ||
+	    ((br == 0) &&
+	     ((READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_STATE) &
+	       IFX_SSC_STATE_IS_MASTER) == 0))) {
+		local_irq_restore (flags);
+		printk ("%s: illegal baudrate %u\n", __FUNCTION__, baud);
+		return -EINVAL;
+	}
+	WRITE_PERIPHERAL_REGISTER (br, info->mapbase + IFX_SSC_BR);
+	if (enabled)
+		WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_SET_ENABLE,
+					   info->mapbase + IFX_SSC_WHBSTATE);
+
+	local_irq_restore (flags);
+	return 0;
+}				// ifx_ssc_set_baud
+
+static int
+ifx_ssc_hwinit (struct ifx_ssc_port *info)
+{
+	unsigned long flags;
+	bool enabled;
+
+	/* have to disable the SSC */
+	enabled = (READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_STATE)
+		   & IFX_SSC_STATE_IS_ENABLED) != 0;
+	WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_CLR_ENABLE,
+				   info->mapbase + IFX_SSC_WHBSTATE);
+
+	if (ifx_ssc_sethwopts (info) < 0) {
+		printk ("%s: setting the hardware options failed\n",
+			__FUNCTION__);
+		return -EINVAL;
+	}
+
+	if (ifx_ssc_set_baud (info, info->baud) < 0) {
+		printk ("%s: setting the baud rate failed\n", __FUNCTION__);
+		return -EINVAL;
+	}
+	local_irq_save (flags);
+	/* TX FIFO */
+	WRITE_PERIPHERAL_REGISTER ((IFX_SSC_DEF_TXFIFO_FL <<
+				    IFX_SSC_XFCON_ITL_OFFSET) |
+				   IFX_SSC_XFCON_FIFO_ENABLE,
+				   info->mapbase + IFX_SSC_TXFCON);
+	/* RX FIFO */
+	WRITE_PERIPHERAL_REGISTER ((IFX_SSC_DEF_RXFIFO_FL <<
+				    IFX_SSC_XFCON_ITL_OFFSET) |
+				   IFX_SSC_XFCON_FIFO_ENABLE,
+				   info->mapbase + IFX_SSC_RXFCON);
+	local_irq_restore (flags);
+	if (enabled)
+		WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_SET_ENABLE,
+					   info->mapbase + IFX_SSC_WHBSTATE);
+	return 0;
+}				// ifx_ssc_hwinit
+
+/*-----------------------------------------------------------------------------
+ FUNC-NAME  : ifx_ssc_batch_exec
+ LONG-NAME  : 
+ PURPOSE    : 
+
+ PARAMETER  : *info	pointer to the port-specific structure ifx_ssc_port.
+
+ RESULT     : Returns error code
+
+ REMARKS    : 
+-----------------------------------------------------------------------------*/
+static int
+ifx_ssc_batch_exec (struct ifx_ssc_port *info,
+		    struct ifx_ssc_batch_list *batch_anchor)
+{
+	// ### TO DO: implement user space batch execution
+	// first, copy the whole linked list from user to kernel space
+	// save some hardware options
+	// execute list
+	// restore hardware options if selected
+	return -EFAULT;
+}				// ifx_ssc_batch_exec
+
+/*
+ * This routine allows the driver to implement device-
+ * specific ioctl's.  If the ioctl number passed in cmd is
+ * not recognized by the driver, it should return ENOIOCTLCMD.
+ */
+int
+ifx_ssc_ioctl (struct inode *inode, struct file *filp, unsigned int cmd,
+	       unsigned long data)
+{
+	struct ifx_ssc_port *info;
+	int line, ret_val = 0;
+	unsigned long flags;
+	unsigned long tmp;
+	int from_kernel = 0;
+
+	if ((inode == (struct inode *) 0) || (inode == (struct inode *) 1)) {
+		from_kernel = 1;
+		line = (int) inode;
+	}
+	else
+		line = MINOR (filp->f_dentry->d_inode->i_rdev);
+
+	/* don't use more minor devices than we can support */
+	if (line < 0 || line >= PORT_CNT)
+		return -ENXIO;
+
+	info = &isp[line];
+
+	switch (cmd) {
+	case IFX_SSC_STATS_READ:
+		/* data must be a pointer to a struct ifx_ssc_statistics */
+		if (from_kernel)
+			memcpy ((void *) data, (void *) &info->stats,
+				sizeof (struct ifx_ssc_statistics));
+		else if (copy_to_user ((void *) data,
+				       (void *) &info->stats,
+				       sizeof (struct ifx_ssc_statistics)))
+			ret_val = -EFAULT;
+		break;
+	case IFX_SSC_STATS_RESET:
+		/* just resets the statistics counters */
+		memset ((void *) &info->stats, 0,
+			sizeof (struct ifx_ssc_statistics));
+		break;
+	case IFX_SSC_BAUD_SET:
+		/* if the buffers are not empty then the port is */
+		/* busy and we shouldn't change things on-the-fly! */
+		if (!info->txbuf || !info->rxbuf ||
+		    (READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_STATE)
+		     & IFX_SSC_STATE_BUSY)) {
+			ret_val = -EBUSY;
+			break;
+		}
+		/* misuse flags */
+		if (from_kernel)
+			flags = *((unsigned long *) data);
+		else if (copy_from_user ((void *) &flags,
+					 (void *) data, sizeof (flags))) {
+			ret_val = -EFAULT;
+			break;
+		}
+		if (flags == 0) {
+			ret_val = -EINVAL;
+			break;
+		}
+		if (ifx_ssc_set_baud (info, flags) < 0) {
+			ret_val = -EINVAL;
+			break;
+		}
+		info->baud = flags;
+		break;
+	case IFX_SSC_BAUD_GET:
+		if (from_kernel)
+			*((unsigned int *) data) = info->baud;
+		else if (copy_to_user ((void *) data,
+				       (void *) &info->baud,
+				       sizeof (unsigned long)))
+			ret_val = -EFAULT;
+		break;
+	case IFX_SSC_RXTX_MODE_SET:
+		if (from_kernel)
+			tmp = *((unsigned long *) data);
+		else if (copy_from_user ((void *) &tmp,
+					 (void *) data, sizeof (tmp))) {
+			ret_val = -EFAULT;
+			break;
+		}
+		ret_val = ifx_ssc_rxtx_mode_set (info, tmp);
+		break;
+	case IFX_SSC_RXTX_MODE_GET:
+		tmp = READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_CON) &
+			(~(IFX_SSC_CON_RX_OFF | IFX_SSC_CON_TX_OFF));
+		if (from_kernel)
+			*((unsigned int *) data) = tmp;
+		else if (copy_to_user ((void *) data,
+				       (void *) &tmp, sizeof (tmp)))
+			ret_val = -EFAULT;
+		break;
+
+	case IFX_SSC_ABORT:
+		ifx_ssc_abort (info);
+		break;
+
+	case IFX_SSC_GPO_OUT_SET:
+		if (from_kernel)
+			tmp = *((unsigned long *) data);
+		else if (copy_from_user ((void *) &tmp,
+					 (void *) data, sizeof (tmp))) {
+			ret_val = -EFAULT;
+			break;
+		}
+		if (tmp > IFX_SSC_MAX_GPO_OUT)
+			ret_val = -EINVAL;
+		else
+			WRITE_PERIPHERAL_REGISTER
+				(1 << (tmp + IFX_SSC_WHBGPOSTAT_SETOUT0_POS),
+				 info->mapbase + IFX_SSC_WHBGPOSTAT);
+		break;
+	case IFX_SSC_GPO_OUT_CLR:
+		if (from_kernel)
+			tmp = *((unsigned long *) data);
+		else if (copy_from_user ((void *) &tmp,
+					 (void *) data, sizeof (tmp))) {
+			ret_val = -EFAULT;
+			break;
+		}
+		if (tmp > IFX_SSC_MAX_GPO_OUT)
+			ret_val = -EINVAL;
+		else {
+			WRITE_PERIPHERAL_REGISTER
+				(1 << (tmp + IFX_SSC_WHBGPOSTAT_CLROUT0_POS),
+				 info->mapbase + IFX_SSC_WHBGPOSTAT);
+		}
+		break;
+	case IFX_SSC_GPO_OUT_GET:
+		tmp = READ_PERIPHERAL_REGISTER
+			(info->mapbase + IFX_SSC_GPOSTAT);
+		if (from_kernel)
+			*((unsigned int *) data) = tmp;
+		else if (copy_to_user ((void *) data,
+				       (void *) &tmp, sizeof (tmp)))
+			ret_val = -EFAULT;
+		break;
+	case IFX_SSC_FRM_STATUS_GET:
+		ifx_ssc_frm_status_get (info);
+		if (from_kernel)
+			memcpy ((void *) data, (void *) &info->frm_status,
+				sizeof (struct ifx_ssc_frm_status));
+		else if (copy_to_user ((void *) data,
+				       (void *) &info->frm_status,
+				       sizeof (struct ifx_ssc_frm_status)))
+			ret_val = -EFAULT;
+		break;
+	case IFX_SSC_FRM_CONTROL_GET:
+		ifx_ssc_frm_control_get (info);
+		if (from_kernel)
+			memcpy ((void *) data, (void *) &info->frm_opts,
+				sizeof (struct ifx_ssc_frm_opts));
+		else if (copy_to_user ((void *) data,
+				       (void *) &info->frm_opts,
+				       sizeof (struct ifx_ssc_frm_opts)))
+			ret_val = -EFAULT;
+		break;
+	case IFX_SSC_FRM_CONTROL_SET:
+		if (from_kernel)
+			memcpy ((void *) &info->frm_opts, (void *) data,
+				sizeof (struct ifx_ssc_frm_opts));
+		else if (copy_to_user ((void *) &info->frm_opts,
+				       (void *) data,
+				       sizeof (struct ifx_ssc_frm_opts))) {
+			ret_val = -EFAULT;
+			break;
+		}
+		ret_val = ifx_ssc_frm_control_set (info);
+		break;
+	case IFX_SSC_HWOPTS_SET:
+		/* data must be a pointer to a struct ifx_ssc_hwopts */
+		/* if the buffers are not empty then the port is */
+		/* busy and we shouldn't change things on-the-fly! */
+		if (!info->txbuf || !info->rxbuf ||
+		    (READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_STATE)
+		     & IFX_SSC_STATE_BUSY)) {
+			ret_val = -EBUSY;
+			break;
+		}
+		if (from_kernel)
+			memcpy ((void *) &info->opts, (void *) data,
+				sizeof (struct ifx_ssc_hwopts));
+		else if (copy_from_user ((void *) &info->opts,
+					 (void *) data,
+					 sizeof (struct ifx_ssc_hwopts))) {
+			ret_val = -EFAULT;
+			break;
+		}
+		if (ifx_ssc_hwinit (info) < 0) {
+			ret_val = -EIO;
+		}
+		break;
+	case IFX_SSC_HWOPTS_GET:
+		/* data must be a pointer to a struct ifx_ssc_hwopts */
+		if (from_kernel)
+			memcpy ((void *) data, (void *) &info->opts,
+				sizeof (struct ifx_ssc_hwopts));
+		else if (copy_to_user ((void *) data,
+				       (void *) &info->opts,
+				       sizeof (struct ifx_ssc_hwopts)))
+			ret_val = -EFAULT;
+		break;
+	default:
+		ret_val = -ENOIOCTLCMD;
+	}
+
+	return ret_val;
+}				/* ifx_ssc_ioctl */
+
+EXPORT_SYMBOL (ifx_ssc_ioctl);
+
+///* the poll routine */
+//static unsigned int
+//ifx_ssc_poll(struct file *filp, struct poll_table_struct *pts)
+//{
+//        int unit = MINOR(filp->f_dentry->d_inode->i_rdev);
+//      struct ifx_ssc_port *info;
+//        unsigned int mask = 0; 
+//      int spc;
+//
+//      info = &isp[unit];
+//
+//        /* add event to the wait queues */
+//        /* DO NOT FORGET TO DO A WAKEUP ON THESE !!!! */
+//        poll_wait(filp, &info->pwait, pts);
+//
+//      /* are there bytes in the RX SW-FIFO? */
+//        if (info->rxrp != info->rxwp)
+//                mask |= POLLIN | POLLRDNORM;
+//
+//      /* free space in the TX SW-FIFO */
+//      spc = info->txrp - info->txwp - 1;
+//      if (spc < 0)
+//              spc += TX_BUFSIZE;
+//#ifdef IFX_SSC_USEDMA
+//      /* writing always works, except in the DMA case when all descriptors */
+//      /* are used up */
+//      if (unit == 1 && info->dma_freecnt == 0)
+//              spc = 0;
+//#endif
+//      if (spc > 0)
+//              mask |= POLLOUT | POLLWRNORM;
+//
+//        return (mask);
+//}
+
+static int
+ifx_ssc1_read_proc (char *page, char **start, off_t offset, int count,
+		    int *eof, void *data)
+{
+	int off = 0;
+	unsigned long flags;
+
+	/* don't want any interrupts here */
+	local_save_flags(flags);
+	local_irq_disable();
+
+	/* print statistics */
+	off += sprintf (page + off,
+			"Statistics for Infineon Synchronous Serial Controller SSC1\n");
+	off += sprintf (page + off, "RX overflow errors %d\n",
+			isp[0].stats.rxOvErr);
+	off += sprintf (page + off, "RX underflow errors %d\n",
+			isp[0].stats.rxUnErr);
+	off += sprintf (page + off, "TX overflow errors %d\n",
+			isp[0].stats.txOvErr);
+	off += sprintf (page + off, "TX underflow errors %d\n",
+			isp[0].stats.txUnErr);
+	off += sprintf (page + off, "Abort errors %d\n",
+			isp[0].stats.abortErr);
+	off += sprintf (page + off, "Mode errors %d\n", isp[0].stats.modeErr);
+	off += sprintf (page + off, "RX Bytes %d\n", isp[0].stats.rxBytes);
+	off += sprintf (page + off, "TX Bytes %d\n", isp[0].stats.txBytes);
+
+	local_irq_restore(flags);	/* XXXXX */
+	*eof = 1;
+	return (off);
+}
+
+/*
+ * This routine prints out the appropriate serial driver version number
+ */
+static inline void
+show_version (void)
+{
+#if 0
+	printk ("Infineon Technologies Synchronous Serial Controller (SSC) driver\n" "  version %s - built %s %s\n", IFX_SSC_DRV_VERSION, __DATE__, __TIME__);
+#endif
+}				/* show_version */
+
+/*
+ * Due to the fact that a port can be dynamically switched between slave
+ * and master mode using an IOCTL the hardware is not initialized here,
+ * but in ifx_ssc_hwinit() as a result of an IOCTL.
+ */
+int __init
+ifx_ssc_init (void)
+{
+	struct ifx_ssc_port *info;
+	int i, nbytes;
+	unsigned long flags;
+	int ret_val;
+
+	// ### TO DO: dynamic port count evaluation due to pin multiplexing
+
+	ret_val = -ENOMEM;
+	nbytes = PORT_CNT * sizeof (struct ifx_ssc_port);
+	isp = (struct ifx_ssc_port *) kmalloc (nbytes, GFP_KERNEL);
+	if (isp == NULL) {
+		printk ("%s: no memory for isp\n", __FUNCTION__);
+		return (ret_val);
+	}
+	memset (isp, 0, nbytes);
+
+	show_version ();
+
+	/* register the device */
+	ret_val = -ENXIO;
+/*
+	i = maj;
+*/
+	if ((i = register_chrdev (maj, "ssc", &ifx_ssc_fops)) < 0) {
+		printk ("Unable to register major %d for the Infineon SSC\n",
+			maj);
+		if (maj == 0) {
+			goto errout;
+		}
+		else {
+			maj = 0;
+			if ((i =
+			     register_chrdev (maj, "ssc",
+					      &ifx_ssc_fops)) < 0) {
+				printk ("Unable to register major %d for the Infineon SSC\n", maj);
+				goto errout;
+			}
+		}
+	}
+	if (maj == 0)
+		maj = i;
+	//printk("registered major %d for Infineon SSC\n", maj);
+
+	/* set default values in ifx_ssc_port */
+	for (i = 0; i < PORT_CNT; i++) {
+		info = &isp[i];
+		info->port_nr = i;
+		/* default values for the HwOpts */
+		info->opts.AbortErrDetect = IFX_SSC_DEF_ABRT_ERR_DETECT;
+		info->opts.rxOvErrDetect = IFX_SSC_DEF_RO_ERR_DETECT;
+		info->opts.rxUndErrDetect = IFX_SSC_DEF_RU_ERR_DETECT;
+		info->opts.txOvErrDetect = IFX_SSC_DEF_TO_ERR_DETECT;
+		info->opts.txUndErrDetect = IFX_SSC_DEF_TU_ERR_DETECT;
+		info->opts.loopBack = IFX_SSC_DEF_LOOP_BACK;
+		info->opts.echoMode = IFX_SSC_DEF_ECHO_MODE;
+		info->opts.idleValue = IFX_SSC_DEF_IDLE_DATA;
+		info->opts.clockPolarity = IFX_SSC_DEF_CLOCK_POLARITY;
+		info->opts.clockPhase = IFX_SSC_DEF_CLOCK_PHASE;
+		info->opts.headingControl = IFX_SSC_DEF_HEADING_CONTROL;
+		info->opts.dataWidth = IFX_SSC_DEF_DATA_WIDTH;
+		info->opts.modeRxTx = IFX_SSC_DEF_MODE_RXTX;
+		info->opts.gpoCs = IFX_SSC_DEF_GPO_CS;
+		info->opts.gpoInv = IFX_SSC_DEF_GPO_INV;
+		info->opts.masterSelect = IFX_SSC_DEF_MASTERSLAVE;
+		info->baud = IFX_SSC_DEF_BAUDRATE;
+		info->rxbuf = NULL;
+		info->txbuf = NULL;
+		/* values specific to SSC1 */
+		if (i == 0) {
+			info->mapbase = DANUBE_SSC1_BASE_ADDR;
+			// ### TO DO: power management
+
+			// setting interrupt vectors
+			info->txirq = DANUBE_SSC_TIR;
+			info->rxirq = DANUBE_SSC_RIR;
+			info->errirq = DANUBE_SSC_EIR;
+/*
+			info->frmirq = IFX_SSC_FIR;
+*/
+		}
+		/* activate SSC */
+		/* CLC.DISS = 0 */
+		WRITE_PERIPHERAL_REGISTER (IFX_SSC_DEF_RMC <<
+					   IFX_CLC_RUN_DIVIDER_OFFSET,
+					   info->mapbase + IFX_SSC_CLC);
+
+// ### TO DO: multiple instances
+
+		init_waitqueue_head (&info->rwait);
+		//init_waitqueue_head(&info->pwait);
+
+		local_irq_save (flags);
+
+		// init serial framing register
+		WRITE_PERIPHERAL_REGISTER (IFX_SSC_DEF_SFCON,
+					   info->mapbase + IFX_SSC_SFCON);
+
+		/* try to get the interrupts */
+		// ### TO DO: interrupt handling with multiple instances
+		ret_val =
+			ifx_int_wrapper.request (info->txirq, ifx_ssc_tx_int, SA_INTERRUPT, "ifx_ssc_tx", info);
+		if (ret_val) {
+			printk ("%s: unable to get irq %d\n", __FUNCTION__,
+				info->txirq);
+			local_irq_restore (flags);
+			goto errout;
+		}
+		ret_val =
+			ifx_int_wrapper.request (info->rxirq, ifx_ssc_rx_int, SA_INTERRUPT, "ifx_ssc_rx", info);
+		if (ret_val) {
+			printk ("%s: unable to get irq %d\n", __FUNCTION__,
+				info->rxirq);
+			local_irq_restore (flags);
+			goto irqerr;
+		}
+		ret_val =
+			ifx_int_wrapper.request (info->errirq, ifx_ssc_err_int, SA_INTERRUPT,"ifx_ssc_err", info);
+		if (ret_val) {
+			printk ("%s: unable to get irq %d\n", __FUNCTION__,
+				info->errirq);
+			local_irq_restore (flags);
+			goto irqerr;
+		}
+/*
+		ret_val = ifx_int_wrapper.request(info->frmirq, ifx_ssc_frm_int, 
+						  0, "ifx_ssc_frm", info);
+		if (ret_val){
+			printk("%s: unable to get irq %d\n", __FUNCTION__,
+					info->frmirq);
+			local_irq_restore(flags);
+			goto irqerr;
+		}
+
+*/
+		WRITE_PERIPHERAL_REGISTER (IFX_SSC_DEF_IRNEN,
+					   info->mapbase + IFX_SSC_IRN_EN);
+		ifx_int_wrapper.enable (info->txirq);
+		ifx_int_wrapper.enable (info->rxirq);
+		ifx_int_wrapper.enable (info->errirq);
+
+		local_irq_restore (flags);
+	}			// for (i = 0; i < PORT_CNT; i++)
+
+	/* init the SSCs with default values */
+	for (i = 0; i < PORT_CNT; i++) {
+		info = &isp[i];
+		if (ifx_ssc_hwinit (info) < 0) {
+			printk ("%s: hardware init failed for port %d\n",
+				__FUNCTION__, i);
+			goto irqerr;
+		}
+	}
+
+	/* register /proc read handler */
+	// ### TO DO: multiple instances
+	/* for SSC1, which is always present */
+	create_proc_read_entry ("driver/ssc1", 0, NULL, ifx_ssc1_read_proc,
+				NULL);
+	return 0;
+
+      irqerr:
+	// ### TO DO: multiple instances
+	ifx_int_wrapper.free (isp[0].txirq, &isp[0]);
+	ifx_int_wrapper.free (isp[0].rxirq, &isp[0]);
+	ifx_int_wrapper.free (isp[0].errirq, &isp[0]);
+/*
+	ifx_int_wrapper.free(isp[0].frmirq, &isp[0]);
+*/
+      errout:
+	/* free up any allocated memory in the error case */
+	kfree (isp);
+	return (ret_val);
+}				/* ifx_ssc_init */
+
+void
+ifx_ssc_cleanup_module (void)
+{
+	int i;
+
+	/* free up any allocated memory */
+	for (i = 0; i < PORT_CNT; i++) {
+		/* disable the SSC */
+		WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_CLR_ENABLE,
+					   isp[i].mapbase + IFX_SSC_WHBSTATE);
+		/* free the interrupts */
+		ifx_int_wrapper.free (isp[i].txirq, &isp[i]);
+		ifx_int_wrapper.free (isp[i].rxirq, &isp[i]);
+		ifx_int_wrapper.free (isp[i].errirq, &isp[i]);
+/*
+		ifx_int_wrapper.free(isp[i].frmirq, &isp[i]);
+
+		if (isp[i].rxbuf != NULL)
+			kfree(isp[i].rxbuf);
+		if (isp[i].txbuf != NULL)
+			kfree(isp[i].txbuf);
+*/
+	}
+	kfree (isp);
+	/* unregister the device */
+//	if (unregister_chrdev (maj, "ssc")) {
+//		printk ("Unable to unregister major %d for the SSC\n", maj);
+//	}
+	/* delete /proc read handler */
+	remove_proc_entry ("driver/ssc1", NULL);
+	remove_proc_entry ("driver/ssc2", NULL);
+}				/* ifx_ssc_cleanup_module */
+
+module_exit (ifx_ssc_cleanup_module);
+
+/* Module entry-points */
+module_init (ifx_ssc_init);
+
+#ifndef MODULE
+static int __init
+ifx_ssc_set_maj (char *str)
+{
+	maj = simple_strtol (str, NULL, 0);
+	return 1;
+}
+
+__setup ("ssc_maj=", ifx_ssc_set_maj);
+#endif /* !MODULE */
+
+#define DANUBE_SSC_EMSG(fmt,arg...) printk("%s: "fmt,__FUNCTION__, ##arg)
+/* Brief:	chip select enable
+ */
+inline int
+ifx_ssc_cs_low (u32 pin)
+{
+	int ret = 0;
+	if ((ret =
+	     ifx_ssc_ioctl ((struct inode *) 0, NULL, IFX_SSC_GPO_OUT_CLR,
+			    (unsigned long) &pin))) {
+		DANUBE_SSC_EMSG ("clear CS %d fails\n", pin);
+	}
+	wmb ();
+	return ret;
+}
+
+EXPORT_SYMBOL (ifx_ssc_cs_low);
+/* Brief:	chip select disable
+ */
+inline int
+ifx_ssc_cs_high (u32 pin)
+{
+	int ret = 0;
+	if ((ret =
+	     ifx_ssc_ioctl ((struct inode *) 0, NULL, IFX_SSC_GPO_OUT_SET,
+			    (unsigned long) &pin))) {
+		DANUBE_SSC_EMSG ("set CS %d fails\n", pin);
+	}
+	wmb ();
+	return ret;
+}
+
+EXPORT_SYMBOL (ifx_ssc_cs_high);
+/* Brief:	one SSC session
+ * Parameter:	
+ *	tx_buf
+ *	tx_len
+ *	rx_buf
+ *	rx_len
+ *	session_mode: IFX_SSC_MODE_RXTX or IFX_SSC_MODE_TX
+ * Return:	>=0 number of bytes received (if rx_buf != 0) or transmitted
+ *		<0 error code
+ * Description:
+ *	0. copy data to internal buffer 
+ *	1. Write command
+ *	2a. If SSC_SESSION_MODE_TXONLY, read tx_len data
+ *	2b. If not Read back (tx_len + rx_len) data
+ *	3. copy internal buffer to rx buf if necessary
+ */
+static int
+ssc_session (char *tx_buf, u32 tx_len, char *rx_buf, u32 rx_len)
+{
+	int ret = 0;
+
+	char *ssc_tx_buf = NULL;
+	char *ssc_rx_buf = NULL;
+
+//      volatile char ssc_tx_buf[128]={0};
+//      volatile char ssc_rx_buf[128]={0};
+
+	int eff_size = 0;
+	u8 mode = 0;
+
+	if (tx_buf == NULL && tx_len == 0 && rx_buf == NULL && rx_len == 0) {
+		DANUBE_SSC_EMSG ("invalid parameters\n");
+		ret = -EINVAL;
+		goto ssc_session_exit;
+	}
+	else if (tx_buf == NULL || tx_len == 0) {
+		if (rx_buf != NULL && rx_len != 0) {
+			mode = IFX_SSC_MODE_RX;
+		}
+		else {
+			DANUBE_SSC_EMSG ("invalid parameters\n");
+			ret = -EINVAL;
+			goto ssc_session_exit;
+		}
+	}
+	else if (rx_buf == NULL || rx_len == 0) {
+		if (tx_buf != NULL && tx_len != 0) {
+			mode = IFX_SSC_MODE_TX;
+		}
+		else {
+			DANUBE_SSC_EMSG ("invalid parameters\n");
+			ret = -EINVAL;
+			goto ssc_session_exit;
+		}
+	}
+	else {
+		mode = IFX_SSC_MODE_RXTX;
+	}
+
+	if (mode == IFX_SSC_MODE_RXTX) {
+		eff_size = tx_len + rx_len;
+	}
+	else if (mode == IFX_SSC_MODE_RX) {
+		eff_size = rx_len;
+	}
+	else {
+		eff_size = tx_len;
+	}
+
+	//4 bytes alignment,  required by driver
+	/* change by TaiCheng */
+	//if (in_irq()){
+	if (1) {
+		ssc_tx_buf =
+			(char *) kmalloc (sizeof (char) *
+					  ((eff_size + 3) & (~3)),
+					  GFP_ATOMIC);
+		ssc_rx_buf =
+			(char *) kmalloc (sizeof (char) *
+					  ((eff_size + 3) & (~3)),
+					  GFP_ATOMIC);
+	}
+	else {
+		ssc_tx_buf =
+			(char *) kmalloc (sizeof (char) *
+					  ((eff_size + 3) & (~3)),
+					  GFP_KERNEL);
+		ssc_rx_buf =
+			(char *) kmalloc (sizeof (char) *
+					  ((eff_size + 3) & (~3)),
+					  GFP_KERNEL);
+	}
+	if (ssc_tx_buf == NULL || ssc_rx_buf == NULL) {
+		DANUBE_SSC_EMSG ("no memory for size of %d\n", eff_size);
+		ret = -ENOMEM;
+		goto ssc_session_exit;
+	}
+	memset ((void *) ssc_tx_buf, 0, eff_size);
+	memset ((void *) ssc_rx_buf, 0, eff_size);
+
+	if (tx_len > 0) {
+		memcpy (ssc_tx_buf, tx_buf, tx_len);
+	}
+
+	ret = ifx_ssc_kwrite (0, ssc_tx_buf, eff_size);
+
+	if (ret > 0) {
+		ssc_tx_buf = NULL;	//should be freed by ifx_ssc_kwrite
+	}
+
+	if (ret != eff_size) {
+		DANUBE_SSC_EMSG ("ifx_ssc_write return %d\n", ret);
+		goto ssc_session_exit;
+	}
+	ret = ifx_ssc_kread (0, ssc_rx_buf, eff_size);
+	if (ret != eff_size) {
+		DANUBE_SSC_EMSG ("ifx_ssc_read return %d\n", ret);
+		goto ssc_session_exit;
+	}
+
+	memcpy (rx_buf, ssc_rx_buf + tx_len, rx_len);
+
+	if (mode == IFX_SSC_MODE_TX) {
+		ret = tx_len;
+	}
+	else {
+		ret = rx_len;
+	}
+      ssc_session_exit:
+
+	if (ssc_tx_buf != NULL)
+		kfree (ssc_tx_buf);
+	if (ssc_rx_buf != NULL)
+		kfree (ssc_rx_buf);
+
+	if (ret < 0) {
+		printk ("ssc session fails\n");
+	}
+	return ret;
+}
+
+/* Brief:	TX-RX session
+ * Parameter:	
+ *	tx_buf
+ *	tx_len
+ *	rx_buf
+ *	rx_len
+ * Return:	>=0 number of bytes received
+ *		<0 error code
+ * Description: 
+ *	1. TX session
+ *	2. RX session
+ */
+int
+ifx_ssc_txrx (char *tx_buf, u32 tx_len, char *rx_buf, u32 rx_len)
+{
+	return ssc_session (tx_buf, tx_len, rx_buf, rx_len);
+}
+
+EXPORT_SYMBOL (ifx_ssc_txrx);
+/* Brief:	TX only session
+ * Parameter:
+ *	tx_buf
+ *	tx_len
+ * Return:	>=0 number of bytes transmitted
+ *		<0 error code
+ */
+int
+ifx_ssc_tx (char *tx_buf, u32 tx_len)
+{
+	return ssc_session (tx_buf, tx_len, NULL, 0);
+}
+
+EXPORT_SYMBOL (ifx_ssc_tx);
+/* Brief:	RX only session
+ * Parameter:
+ *	rx_buf
+ *	rx_len
+ * Return:	>=0 number of bytes received
+ *		<0 error code
+ */
+int
+ifx_ssc_rx (char *rx_buf, u32 rx_len)
+{
+	return ssc_session (NULL, 0, rx_buf, rx_len);
+}
+
+EXPORT_SYMBOL (ifx_ssc_rx);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("John Crispin <blogic@openwrt.org>");
+MODULE_DESCRIPTION("danube ssc driver");
+
diff --git a/target/linux/danube/files/include/asm-mips/danube/danube.h b/target/linux/danube/files/include/asm-mips/danube/danube.h
index f73b255ea7..5bad876e1f 100644
--- a/target/linux/danube/files/include/asm-mips/danube/danube.h
+++ b/target/linux/danube/files/include/asm-mips/danube/danube.h
@@ -322,7 +322,6 @@
 #define DANUBE_LED_EDGE_MASK	(1 << 26)
 
 
-
 /*------------ GPIO */
 
 #define DANUBE_GPIO_BASE_ADDR	(0xBE100B00)
@@ -346,4 +345,14 @@
 #define DANUBE_GPIO_P0_PUDEN	((u32*)(DANUBE_GPIO_BASE_ADDR + 0x0030))
 #define DANUBE_GPIO_P1_PUDEN	((u32*)(DANUBE_GPIO_BASE_ADDR + 0x0060))
 
+
+/*------------ SSC */
+
+#define DANUBE_SSC1_BASE_ADDR	(KSEG1 + 0x1e100800)
+
+
+
+
+
+
 #endif
diff --git a/target/linux/danube/files/include/asm-mips/danube/danube_irq.h b/target/linux/danube/files/include/asm-mips/danube/danube_irq.h
index 1912e1f323..45796831fe 100644
--- a/target/linux/danube/files/include/asm-mips/danube/danube_irq.h
+++ b/target/linux/danube/files/include/asm-mips/danube/danube_irq.h
@@ -32,6 +32,10 @@
 #define DANUBEASC1_RIR			(INT_NUM_IM3_IRL0 + 9)
 #define DANUBEASC1_EIR			(INT_NUM_IM3_IRL0 + 10)
 
+#define DANUBE_SSC_TIR			(INT_NUM_IM0_IRL0 + 15)
+#define DANUBE_SSC_RIR			(INT_NUM_IM0_IRL0 + 14)
+#define DANUBE_SSC_EIR			(INT_NUM_IM0_IRL0 + 16)
+
 #define DANUBE_TIMER6_INT		(INT_NUM_IM1_IRL0 + 23)
 
 #define MIPS_CPU_TIMER_IRQ		7
diff --git a/target/linux/danube/files/include/asm-mips/danube/ifx_peripheral_definitions.h b/target/linux/danube/files/include/asm-mips/danube/ifx_peripheral_definitions.h
new file mode 100644
index 0000000000..5bd788fff6
--- /dev/null
+++ b/target/linux/danube/files/include/asm-mips/danube/ifx_peripheral_definitions.h
@@ -0,0 +1,119 @@
+//*************************************************************************
+//* Summary of definitions which are used in each peripheral              *
+//*************************************************************************
+
+#ifndef peripheral_definitions_h
+#define peripheral_definitions_h
+
+////#include "cpu.h"
+//
+///* These files have to be included by each peripheral */
+//#include <sysdefs.h>
+//#include <excep.h>
+//#include <cpusubsys.h>
+//#include <sys_api.h>
+//#include <mips.h>
+//#include "SRAM_address_map.h"
+//
+///* common header files for all CPU's */
+//#include "iiu.h"
+//#include "bcu.h"
+//#include "FPI_address_map.h"
+//#include "direct_interrupts.h"
+
+/////////////////////////////////////////////////////////////////////////
+
+//extern  int _clz();
+//extern void _nop();
+//extern void _sleep();
+//extern void sys_enable_int();
+
+typedef unsigned char UINT8;
+typedef signed char INT8;
+typedef unsigned short UINT16;
+typedef signed short INT16;
+typedef unsigned int UINT32;
+typedef signed int INT32;
+typedef unsigned long long UINT64;
+typedef signed long long INT64;
+
+#define REG8( addr )		  (*(volatile UINT8 *) (addr))
+#define REG16( addr )		  (*(volatile UINT16 *)(addr))
+#define REG32( addr )		  (*(volatile UINT32 *)(addr))
+#define REG64( addr )		  (*(volatile UINT64 *)(addr))
+
+/* define routine to set FPI access in Supervisor Mode */
+#define IFX_SUPERVISOR_ON()                         REG32(FB0_CFG) = 0x01
+/* Supervisor mode ends, following functions will be done in User mode */
+#define IFX_SUPERVISOR_OFF()                        REG32(FB0_CFG) = 0x00
+/* Supervisor mode ends, following functions will be done in User mode */
+#define IFX_SUPERVISOR_MODE()                       REG32(FB0_CFG)
+/* Supervisor mode ends, following functions will be done in User mode */
+#define IFX_SUPERVISOR_SET(svm)                     REG32(FB0_CFG) = svm
+/* enable all Interrupts in IIU */
+//#define IFX_ENABLE_IRQ(irq_mask, im_base)           REG32(im_base | IIU_MASK) = irq_mask
+///* get all high priority interrupt bits in IIU */
+//#define IFX_GET_IRQ_MASKED(im_base)                 REG32(im_base | IIU_IRMASKED)
+///* signal ends of interrupt to IIU */
+//#define IFX_CLEAR_DIRECT_IRQ(irq_bit, im_base)      REG32(im_base | IIU_IR) = irq_bit
+///* force IIU interrupt register */
+//#define IFX_FORCE_IIU_REGISTER(data, im_base)       REG32(im_base | IIU_IRDEBUG) = data
+///* get all bits of interrupt register */
+//#define IFX_GET_IRQ_UNMASKED(im_base)               REG32(im_base | IIU_IR)
+/* insert a NOP instruction */
+#define NOP                                     _nop()
+/* CPU goes to power down mode until interrupt occurs */
+#define IFX_CPU_SLEEP                               _sleep()
+/* enable all interrupts to CPU */
+#define IFX_CPU_ENABLE_ALL_INTERRUPT                sys_enable_int()
+/* get all low priority interrupt bits in peripheral */
+#define IFX_GET_LOW_PRIO_IRQ(int_reg)               REG32(int_reg)
+/* clear low priority interrupt bit in peripheral */
+#define IFX_CLEAR_LOW_PRIO_IRQ(irq_bit, int_reg)    REG32(int_reg) = irq_bit
+/* write FPI bus */
+#define WRITE_FPI_BYTE(data, addr)              REG8(addr) = data
+#define WRITE_FPI_16BIT(data, addr)             REG16(addr) = data
+#define WRITE_FPI_32BIT(data, addr)             REG32(addr) = data
+/* read FPI bus */
+#define READ_FPI_BYTE(addr)                     REG8(addr)
+#define READ_FPI_16BIT(addr)                    REG16(addr)
+#define READ_FPI_32BIT(addr)                    REG32(addr)
+/* write peripheral register */
+#define WRITE_PERIPHERAL_REGISTER(data, addr)   REG32(addr) = data
+
+#ifdef	CONFIG_CPU_LITTLE_ENDIAN
+#define WRITE_PERIPHERAL_REGISTER_16(data, addr) REG16(addr) = data
+#define WRITE_PERIPHERAL_REGISTER_8(data, addr) REG8(addr) = data
+#else //not CONFIG_CPU_LITTLE_ENDIAN
+#define WRITE_PERIPHERAL_REGISTER_16(data, addr) REG16(addr+2) = data
+#define WRITE_PERIPHERAL_REGISTER_8(data, addr) REG8(addr+3) = data
+#endif //CONFIG_CPU_LITTLE_ENDIAN
+
+/* read peripheral register */
+#define READ_PERIPHERAL_REGISTER(addr)          REG32(addr)
+
+/* read/modify(or)/write peripheral register */
+#define RMW_OR_PERIPHERAL_REGISTER(data, addr)	REG32(addr) = REG32(addr) | data
+/* read/modify(and)/write peripheral register */
+#define RMW_AND_PERIPHERAL_REGISTER(data, addr)	REG32(addr) = REG32(addr) & (UINT32)data
+
+/* CPU-independent mnemonic constants */
+/* CLC register bits */
+#define IFX_CLC_ENABLE                0x00000000
+#define IFX_CLC_DISABLE               0x00000001
+#define IFX_CLC_DISABLE_STATUS        0x00000002
+#define IFX_CLC_SUSPEND_ENABLE        0x00000004
+#define IFX_CLC_CLOCK_OFF_DISABLE     0x00000008
+#define IFX_CLC_OVERWRITE_SPEN_FSOE   0x00000010
+#define IFX_CLC_FAST_CLOCK_SWITCH_OFF 0x00000020
+#define IFX_CLC_RUN_DIVIDER_MASK      0x0000FF00
+#define IFX_CLC_RUN_DIVIDER_OFFSET    8
+#define IFX_CLC_SLEEP_DIVIDER_MASK    0x00FF0000
+#define IFX_CLC_SLEEP_DIVIDER_OFFSET  16
+#define IFX_CLC_SPECIFIC_DIVIDER_MASK 0x00FF0000
+#define IFX_CLC_SPECIFIC_DIVIDER_OFFSET 24
+
+/* number of cycles to wait for interrupt service routine to be called */
+#define WAIT_CYCLES   50
+
+#endif /* PERIPHERAL_DEFINITIONS_H not yet defined */
diff --git a/target/linux/danube/files/include/asm-mips/danube/ifx_ssc.h b/target/linux/danube/files/include/asm-mips/danube/ifx_ssc.h
new file mode 100644
index 0000000000..e541c8ec3b
--- /dev/null
+++ b/target/linux/danube/files/include/asm-mips/danube/ifx_ssc.h
@@ -0,0 +1,258 @@
+/*
+ * ifx_ssc.h defines some data sructures used in ifx_ssc.c
+ *
+ * Copyright (C) 2004 Michael Schoenenborn (IFX COM TI BT)
+ *
+ *
+ */
+
+#ifndef __IFX_SSC_H
+#define __IFX_SSC_H
+#ifdef __KERNEL__
+#include <asm/danube/ifx_ssc_defines.h>
+#endif //__KERNEL__
+
+#define PORT_CNT		1	// assume default value
+
+/* symbolic constants to be used in SSC routines */
+
+// ### TO DO: bad performance
+#define IFX_SSC_TXFIFO_ITL	1
+#define IFX_SSC_RXFIFO_ITL	1
+
+struct ifx_ssc_statistics {
+	unsigned int abortErr;	/* abort error */
+	unsigned int modeErr;	/* master/slave mode error */
+	unsigned int txOvErr;	/* TX Overflow error */
+	unsigned int txUnErr;	/* TX Underrun error */
+	unsigned int rxOvErr;	/* RX Overflow error */
+	unsigned int rxUnErr;	/* RX Underrun error */
+	unsigned int rxBytes;
+	unsigned int txBytes;
+};
+
+struct ifx_ssc_hwopts {
+	unsigned int AbortErrDetect:1;	/* Abort Error detection (in slave mode) */
+	unsigned int rxOvErrDetect:1;	/* Receive Overflow Error detection */
+	unsigned int rxUndErrDetect:1;	/* Receive Underflow Error detection */
+	unsigned int txOvErrDetect:1;	/* Transmit Overflow Error detection */
+	unsigned int txUndErrDetect:1;	/* Transmit Underflow Error detection */
+	unsigned int echoMode:1;	/* Echo mode */
+	unsigned int loopBack:1;	/* Loopback mode */
+	unsigned int idleValue:1;	/* Idle value */
+	unsigned int clockPolarity:1;	/* Idle clock is high or low */
+	unsigned int clockPhase:1;	/* Tx on trailing or leading edge */
+	unsigned int headingControl:1;	/* LSB first or MSB first */
+	unsigned int dataWidth:6;	/* from 2 up to 32 bits */
+	unsigned int masterSelect:1;	/* Master or Slave mode */
+	unsigned int modeRxTx:2;	/* rx/tx mode */
+	unsigned int gpoCs:8;	/* choose outputs to use for chip select */
+	unsigned int gpoInv:8;	/* invert GPO outputs */
+};
+
+struct ifx_ssc_frm_opts {
+	bool FrameEnable;	// SFCON.SFEN
+	unsigned int DataLength;	// SFCON.DLEN
+	unsigned int PauseLength;	// SFCON.PLEN
+	unsigned int IdleData;	// SFCON.IDAT
+	unsigned int IdleClock;	// SFCON.ICLK
+	bool StopAfterPause;	// SFCON.STOP
+};
+
+struct ifx_ssc_frm_status {
+	bool DataBusy;		// SFSTAT.DBSY
+	bool PauseBusy;		// SFSTAT.PBSY
+	unsigned int DataCount;	// SFSTAT.DCNT
+	unsigned int PauseCount;	// SFSTAT.PCNT
+	bool EnIntAfterData;	// SFCON.IBEN
+	bool EnIntAfterPause;	// SFCON.IAEN
+};
+
+typedef struct {
+	char *buf;
+	size_t len;
+} ifx_ssc_buf_item_t;
+
+// data structures for batch execution
+typedef union {
+	struct {
+		bool save_options;
+	} init;
+	ifx_ssc_buf_item_t read;
+	ifx_ssc_buf_item_t write;
+	ifx_ssc_buf_item_t rd_wr;
+	unsigned int set_baudrate;
+	struct ifx_ssc_frm_opts set_frm;
+	unsigned int set_gpo;
+	struct ifx_ssc_hwopts set_hwopts;
+} ifx_ssc_batch_cmd_param;
+
+struct ifx_ssc_batch_list {
+	unsigned int cmd;
+	ifx_ssc_batch_cmd_param cmd_param;
+	struct ifx_ssc_batch_list *next;
+};
+
+#ifdef __KERNEL__
+#define IFX_SSC_IS_MASTER(p) ((p)->opts.masterSelect == SSC_MASTER_MODE)
+
+struct ifx_ssc_port {
+	unsigned long mapbase;
+	struct ifx_ssc_hwopts opts;
+	struct ifx_ssc_statistics stats;
+	struct ifx_ssc_frm_status frm_status;
+	struct ifx_ssc_frm_opts frm_opts;
+	/* wait queue for ifx_ssc_read() */
+	wait_queue_head_t rwait, pwait;
+	int port_nr;
+	char port_is_open;	/* exclusive open  - boolean */
+//      int no_of_bits; /* number of _valid_ bits */
+//      int elem_size; /* shift for element (no of bytes)*/
+	/* buffer and pointers to the read/write position */
+	char *rxbuf;		/* buffer for RX */
+	char *rxbuf_end;	/* buffer end pointer for RX */
+	volatile char *rxbuf_ptr;	/* buffer write pointer for RX */
+	char *txbuf;		/* buffer for TX */
+	char *txbuf_end;	/* buffer end pointer for TX */
+	volatile char *txbuf_ptr;	/* buffer read pointer for TX */
+	unsigned int baud;
+	/* each channel has its own interrupts */
+	/* (transmit/receive/error/frame) */
+	unsigned int txirq, rxirq, errirq, frmirq;
+};
+/* default values for SSC configuration */
+// values of CON
+#define IFX_SSC_DEF_IDLE_DATA       1	/* enable */
+#define IFX_SSC_DEF_BYTE_VALID_CTL  1	/* enable */
+#define IFX_SSC_DEF_DATA_WIDTH      32	/* bits */
+#define IFX_SSC_DEF_ABRT_ERR_DETECT 0	/* disable */
+#define IFX_SSC_DEF_RO_ERR_DETECT   1	/* enable */
+#define IFX_SSC_DEF_RU_ERR_DETECT   0	/* disable */
+#define IFX_SSC_DEF_TO_ERR_DETECT   0	/* disable */
+#define IFX_SSC_DEF_TU_ERR_DETECT   0	/* disable */
+#define IFX_SSC_DEF_LOOP_BACK       0	/* disable */
+#define IFX_SSC_DEF_ECHO_MODE       0	/* disable */
+#define IFX_SSC_DEF_CLOCK_POLARITY  0	/* low */
+#define IFX_SSC_DEF_CLOCK_PHASE     1	/* 0: shift on leading edge, latch on trailling edge, 1, otherwise */
+#define IFX_SSC_DEF_HEADING_CONTROL IFX_SSC_MSB_FIRST
+#define IFX_SSC_DEF_MODE_RXTX	    IFX_SSC_MODE_RXTX
+// other values
+#define IFX_SSC_DEF_MASTERSLAVE	    IFX_SSC_MASTER_MODE	/* master */
+#ifdef CONFIG_USE_EMULATOR
+#define IFX_SSC_DEF_BAUDRATE	    10000
+#else
+#define IFX_SSC_DEF_BAUDRATE	    2000000
+#endif
+#define IFX_SSC_DEF_RMC	    	    0x10
+
+#define IFX_SSC_DEF_TXFIFO_FL       8
+#define IFX_SSC_DEF_RXFIFO_FL       1
+
+#if 1				//TODO
+#define IFX_SSC_DEF_GPO_CS	    0x3	/* no chip select */
+#define IFX_SSC_DEF_GPO_INV	    0	/* no chip select */
+#else
+#error "what is ur Chip Select???"
+#endif
+#define IFX_SSC_DEF_SFCON	    0	/* no serial framing */
+#if 0
+#define IFX_SSC_DEF_IRNEN	    IFX_SSC_T_BIT | /* enable all int's */\
+				    IFX_SSC_R_BIT | IFX_SSC_E_BIT | IFX_SSC_F_BIT
+#endif
+#define IFX_SSC_DEF_IRNEN	    IFX_SSC_T_BIT | /* enable all int's */\
+				    IFX_SSC_R_BIT | IFX_SSC_E_BIT
+#endif /* __KERNEL__ */
+
+// batch execution commands
+#define IFX_SSC_BATCH_CMD_INIT		1
+#define IFX_SSC_BATCH_CMD_READ		2
+#define IFX_SSC_BATCH_CMD_WRITE		3
+#define IFX_SSC_BATCH_CMD_RD_WR		4
+#define IFX_SSC_BATCH_CMD_SET_BAUDRATE	5
+#define IFX_SSC_BATCH_CMD_SET_HWOPTS	6
+#define IFX_SSC_BATCH_CMD_SET_FRM	7
+#define IFX_SSC_BATCH_CMD_SET_GPO	8
+#define IFX_SSC_BATCH_CMD_FIFO_FLUSH	9
+//#define IFX_SSC_BATCH_CMD_    
+//#define IFX_SSC_BATCH_CMD_    
+#define IFX_SSC_BATCH_CMD_END_EXEC	0
+
+/* Macros to configure SSC hardware */
+/* headingControl: */
+#define IFX_SSC_LSB_FIRST            0
+#define IFX_SSC_MSB_FIRST            1
+/* dataWidth: */
+#define IFX_SSC_MIN_DATA_WIDTH       2
+#define IFX_SSC_MAX_DATA_WIDTH       32
+/* master/slave mode select */
+#define IFX_SSC_MASTER_MODE          1
+#define IFX_SSC_SLAVE_MODE           0
+/* rx/tx mode */
+// ### TO DO: !!! ATTENTION! Hardware dependency => move to ifx_ssc_defines.h
+#define IFX_SSC_MODE_RXTX	     0
+#define IFX_SSC_MODE_RX		     1
+#define IFX_SSC_MODE_TX		     2
+#define IFX_SSC_MODE_OFF	     3
+#define IFX_SSC_MODE_MASK	     IFX_SSC_MODE_RX | IFX_SSC_MODE_TX
+
+/* GPO values */
+#define IFX_SSC_MAX_GPO_OUT	     7
+
+#define IFX_SSC_RXREQ_BLOCK_SIZE     32768
+
+/***********************/
+/* defines for ioctl's */
+/***********************/
+#define IFX_SSC_IOCTL_MAGIC     'S'
+/* read out the statistics */
+#define IFX_SSC_STATS_READ _IOR(IFX_SSC_IOCTL_MAGIC, 1, struct ifx_ssc_statistics)
+/* clear the statistics */
+#define IFX_SSC_STATS_RESET _IO(IFX_SSC_IOCTL_MAGIC, 2)
+/* set the baudrate */
+#define IFX_SSC_BAUD_SET _IOW(IFX_SSC_IOCTL_MAGIC, 3, unsigned int)
+/* get the current baudrate */
+#define IFX_SSC_BAUD_GET _IOR(IFX_SSC_IOCTL_MAGIC, 4, unsigned int)
+/* set hardware options */
+#define IFX_SSC_HWOPTS_SET _IOW(IFX_SSC_IOCTL_MAGIC, 5, struct ifx_ssc_hwopts)
+/* get the current hardware options */
+#define IFX_SSC_HWOPTS_GET _IOR(IFX_SSC_IOCTL_MAGIC, 6, struct ifx_ssc_hwopts)
+/* set transmission mode */
+#define IFX_SSC_RXTX_MODE_SET _IOW(IFX_SSC_IOCTL_MAGIC, 7, unsigned int)
+/* get the current transmission mode */
+#define IFX_SSC_RXTX_MODE_GET _IOR(IFX_SSC_IOCTL_MAGIC, 8, unsigned int)
+/* abort transmission */
+#define IFX_SSC_ABORT _IO(IFX_SSC_IOCTL_MAGIC, 9)
+#define IFX_SSC_FIFO_FLUSH _IO(IFX_SSC_IOCTL_MAGIC, 9)
+
+/* set general purpose outputs */
+#define IFX_SSC_GPO_OUT_SET _IOW(IFX_SSC_IOCTL_MAGIC, 32, unsigned int)
+/* clear general purpose outputs */
+#define IFX_SSC_GPO_OUT_CLR _IOW(IFX_SSC_IOCTL_MAGIC, 33, unsigned int)
+/* get general purpose outputs */
+#define IFX_SSC_GPO_OUT_GET _IOR(IFX_SSC_IOCTL_MAGIC, 34, unsigned int)
+
+/*** serial framing ***/
+/* get status of serial framing */
+#define IFX_SSC_FRM_STATUS_GET _IOR(IFX_SSC_IOCTL_MAGIC, 48, struct ifx_ssc_frm_status)
+/* get counter reload values and control bits */
+#define IFX_SSC_FRM_CONTROL_GET _IOR(IFX_SSC_IOCTL_MAGIC, 49, struct ifx_ssc_frm_opts)
+/* set counter reload values and control bits */
+#define IFX_SSC_FRM_CONTROL_SET _IOW(IFX_SSC_IOCTL_MAGIC, 50, struct ifx_ssc_frm_opts)
+
+/*** batch execution ***/
+/* do batch execution */
+#define IFX_SSC_BATCH_EXEC _IOW(IFX_SSC_IOCTL_MAGIC, 64, struct ifx_ssc_batch_list)
+
+#ifdef __KERNEL__
+// routines from ifx_ssc.c
+// ### TO DO
+/* kernel interface for read and write */
+ssize_t ifx_ssc_kread (int, char *, size_t);
+ssize_t ifx_ssc_kwrite (int, const char *, size_t);
+
+#ifdef CONFIG_IFX_VP_KERNEL_TEST
+void ifx_ssc_tc (void);
+#endif // CONFIG_IFX_VP_KERNEL_TEST
+
+#endif //__KERNEL__
+#endif // __IFX_SSC_H
diff --git a/target/linux/danube/files/include/asm-mips/danube/ifx_ssc_defines.h b/target/linux/danube/files/include/asm-mips/danube/ifx_ssc_defines.h
new file mode 100644
index 0000000000..805d48ad84
--- /dev/null
+++ b/target/linux/danube/files/include/asm-mips/danube/ifx_ssc_defines.h
@@ -0,0 +1,547 @@
+#ifndef IFX_SSC_DEFINES_H
+#define IFX_SSC_DEFINES_H
+
+#include "ifx_peripheral_definitions.h"
+
+/* maximum SSC FIFO size */
+#define IFX_SSC_MAX_FIFO_SIZE 32
+
+/* register map of SSC  */
+
+/* address of the Clock Control Register of the SSC */
+#define IFX_SSC_CLC                 0x00000000
+/* IFX_SSC_CLC register is significant in bits 23 downto 8 and in bits 5, 3, 2, 0  
+   bit 1 is hardware modified*/
+#define IFX_SSC_CLC_readmask  0x00FFFFEF
+#define IFX_SSC_CLC_writemask 0x00FFFF3D
+#define IFX_SSC_CLC_hwmask    0x00000002
+#define IFX_SSC_CLC_dontcare (IFX_SSC_CLC_readmask & IFX_SSC_CLC_writemask & ~IFX_SSC_CLC_hwmask)
+
+/* address of Port Input Select Register of the SSC */
+#define IFX_SSC_PISEL 0x00000004
+/* IFX_SSC_PISEL register is significant in lowest three bits only */
+#define IFX_SSC_PISEL_readmask  0x00000007
+#define IFX_SSC_PISEL_writemask 0x00000007
+#define IFX_SSC_PISEL_hwmask    0x00000000
+#define IFX_SSC_PISEL_dontcare (IFX_SSC_PISEL_readmask & IFX_SSC_PISEL_writemask & ~IFX_SSC_PISEL_hwmask)
+
+/* address of Identification Register of the SSC */
+#define IFX_SSC_ID 0x00000008
+/* IFX_SSC_ID register is significant in no bit */
+#define IFX_SSC_ID_readmask  0x0000FF3F
+#define IFX_SSC_ID_writemask 0x00000000
+#define IFX_SSC_ID_hwmask    0x00000000
+#define IFX_SSC_ID_dontcare (IFX_SSC_ID_readmask & IFX_SSC_ID_writemask & ~IFX_SSC_ID_hwmask)
+
+/* address of the Control Register of the SSC */
+#define IFX_SSC_CON            0x00000010
+/* IFX_SSC_CON register is significant in bits 23:22, 20:16 and 12:0 */
+#define IFX_SSC_CON_readmask  0x01DF1FFF
+#define IFX_SSC_CON_writemask 0x01DF1FFF
+#define IFX_SSC_CON_hwmask    0x00000000
+#define IFX_SSC_CON_dontcare (IFX_SSC_CON_readmask & IFX_SSC_CON_writemask & ~IFX_SSC_CON_hwmask)
+
+/* address of the Status Register of the SSC */
+#define IFX_SSC_STATE          0x00000014
+/* IFX_SSC_STATE register is readable in bits 30:28, 26:24, 20:16, 12:7 and 2:0
+   all bits except 1:0 are hardware modified */
+#define IFX_SSC_STATE_readmask  0x771F3F87
+#define IFX_SSC_STATE_writemask 0x00000000
+#define IFX_SSC_STATE_hwmask    0x771F3F84
+#define IFX_SSC_STATE_dontcare (IFX_SSC_STATE_readmask & IFX_SSC_STATE_writemask & ~IFX_SSC_STATE_hwmask)
+
+/* address of the Write Hardware Modified Control Register Bits of the SSC */
+#define IFX_SSC_WHBSTATE            0x00000018
+/* IFX_SSC_WHBSTATE register is write only */
+#define IFX_SSC_WHBSTATE_readmask  0x00000000
+#define IFX_SSC_WHBSTATE_writemask 0x0000FFFF
+#define IFX_SSC_WHBSTATE_hwmask    0x00000000
+#define IFX_SSC_WHBSTATE_dontcare (IFX_SSC_WHBSTATE_readmask & IFX_SSC_WHBSTATE_writemask & ~IFX_SSC_WHBSTATE_hwmask)
+
+/* address of the Baudrate Timer Reload Register of the SSC */
+#define IFX_SSC_BR              0x00000040
+/* IFX_SSC_BR register is significant in  bit 15 downto 0*/
+#define IFX_SSC_BR_readmask  0x0000FFFF
+#define IFX_SSC_BR_writemask 0x0000FFFF
+#define IFX_SSC_BR_hwmask    0x00000000
+#define IFX_SSC_BR_dontcare (IFX_SSC_BR_readmask & IFX_SSC_BR_writemask & ~IFX_SSC_BR_hwmask)
+
+/* address of the Baudrate Timer Status Register of the SSC */
+#define IFX_SSC_BRSTAT              0x00000044
+/* IFX_SSC_BRSTAT register is significant in  bit 15 downto 0*/
+#define IFX_SSC_BRSTAT_readmask  0x0000FFFF
+#define IFX_SSC_BRSTAT_writemask 0x00000000
+#define IFX_SSC_BRSTAT_hwmask    0x0000FFFF
+#define IFX_SSC_BRSTAT_dontcare (IFX_SSC_BRSTAT_readmask & IFX_SSC_BRSTAT_writemask & ~IFX_SSC_BRSTAT_hwmask)
+
+/* address of the Transmitter Buffer Register of the SSC */
+#define IFX_SSC_TB              0x00000020
+/* IFX_SSC_TB register is significant in  bit 31 downto 0*/
+#define IFX_SSC_TB_readmask  0xFFFFFFFF
+#define IFX_SSC_TB_writemask 0xFFFFFFFF
+#define IFX_SSC_TB_hwmask    0x00000000
+#define IFX_SSC_TB_dontcare (IFX_SSC_TB_readmask & IFX_SSC_TB_writemask & ~IFX_SSC_TB_hwmask)
+
+/* address of the Reciver Buffer Register of the SSC */
+#define IFX_SSC_RB              0x00000024
+/* IFX_SSC_RB register is significant in no bits*/
+#define IFX_SSC_RB_readmask  0xFFFFFFFF
+#define IFX_SSC_RB_writemask 0x00000000
+#define IFX_SSC_RB_hwmask    0xFFFFFFFF
+#define IFX_SSC_RB_dontcare (IFX_SSC_RB_readmask & IFX_SSC_RB_writemask & ~IFX_SSC_RB_hwmask)
+
+/* address of the Receive FIFO Control Register of the SSC */
+#define IFX_SSC_RXFCON              0x00000030
+/* IFX_SSC_RXFCON register is significant in bit 13 downto 8 and bit 1 downto 0 */
+#define IFX_SSC_RXFCON_readmask  0x00003F03
+#define IFX_SSC_RXFCON_writemask 0x00003F03
+#define IFX_SSC_RXFCON_hwmask    0x00000000
+#define IFX_SSC_RXFCON_dontcare (IFX_SSC_RXFCON_readmask & IFX_SSC_RXFCON_writemask & ~IFX_SSC_RXFCON_hwmask)
+
+/* address of the Transmit FIFO Control Register of the SSC */
+#define IFX_SSC_TXFCON              0x00000034
+/* IFX_SSC_TXFCON register is significant in bit 13 downto 8 and bit 1 downto 0 */
+#define IFX_SSC_TXFCON_readmask  0x00003F03
+#define IFX_SSC_TXFCON_writemask 0x00003F03
+#define IFX_SSC_TXFCON_hwmask    0x00000000
+#define IFX_SSC_TXFCON_dontcare (IFX_SSC_TXFCON_readmask & IFX_SSC_TXFCON_writemask & ~IFX_SSC_TXFCON_hwmask)
+
+/* address of the FIFO Status Register of the SSC */
+#define IFX_SSC_FSTAT               0x00000038
+/* IFX_SSC_FSTAT register is significant in no bit*/
+#define IFX_SSC_FSTAT_readmask  0x00003F3F
+#define IFX_SSC_FSTAT_writemask 0x00000000
+#define IFX_SSC_FSTAT_hwmask    0x00003F3F
+#define IFX_SSC_FSTAT_dontcare (IFX_SSC_FSTAT_readmask & IFX_SSC_FSTAT_writemask & ~IFX_SSC_FSTAT_hwmask)
+
+/* address of the Data Frame Control register of the SSC */
+#define IFX_SSC_SFCON               0x00000060
+#define IFX_SSC_SFCON_readmask  0xFFDFFFFD
+#define IFX_SSC_SFCON_writemask 0xFFDFFFFD
+#define IFX_SSC_SFCON_hwmask    0x00000000
+#define IFX_SSC_SFCON_dontcare (IFX_SSC_SFCON_readmask & IFX_SSC_SFCON_writemask & ~IFX_SSC_SFCON_hwmask)
+
+/* address of the Data Frame Status register of the SSC */
+#define IFX_SSC_SFSTAT               0x00000064
+#define IFX_SSC_SFSTAT_readmask  0xFFC0FFF3
+#define IFX_SSC_SFSTAT_writemask 0x00000000
+#define IFX_SSC_SFSTAT_hwmask    0xFFC0FFF3
+#define IFX_SSC_SFSTAT_dontcare (IFX_SSC_SFSTAT_readmask & IFX_SSC_SFSTAT_writemask & ~IFX_SSC_SFSTAT_hwmask)
+
+/* address of the General Purpose Output Control register of the SSC */
+#define IFX_SSC_GPOCON               0x00000070
+#define IFX_SSC_GPOCON_readmask  0x0000FFFF
+#define IFX_SSC_GPOCON_writemask 0x0000FFFF
+#define IFX_SSC_GPOCON_hwmask    0x00000000
+#define IFX_SSC_GPOCON_dontcare (IFX_SSC_GPOCON_readmask & IFX_SSC_GPOCON_writemask & ~IFX_SSC_GPOCON_hwmask)
+
+/* address of the General Purpose Output Status register of the SSC */
+#define IFX_SSC_GPOSTAT               0x00000074
+#define IFX_SSC_GPOSTAT_readmask  0x000000FF
+#define IFX_SSC_GPOSTAT_writemask 0x00000000
+#define IFX_SSC_GPOSTAT_hwmask    0x00000000
+#define IFX_SSC_GPOSTAT_dontcare (IFX_SSC_GPOSTAT_readmask & IFX_SSC_GPOSTAT_writemask & ~IFX_SSC_GPOSTAT_hwmask)
+
+/* address of the Force GPO Status register of the SSC */
+#define IFX_SSC_WHBGPOSTAT               0x00000078
+#define IFX_SSC_WHBGPOSTAT_readmask  0x00000000
+#define IFX_SSC_WHBGPOSTAT_writemask 0x0000FFFF
+#define IFX_SSC_WHBGPOSTAT_hwmask    0x00000000
+#define IFX_SSC_WHBGPOSTAT_dontcare (IFX_SSC_WHBGPOSTAT_readmask & IFX_SSC_WHBGPOSTAT_writemask & ~IFX_SSC_WHBGPOSTAT_hwmask)
+
+/* address of the Receive Request Register of the SSC */
+#define IFX_SSC_RXREQ               0x00000080
+#define IFX_SSC_RXREQ_readmask  0x0000FFFF
+#define IFX_SSC_RXREQ_writemask 0x0000FFFF
+#define IFX_SSC_RXREQ_hwmask    0x00000000
+#define IFX_SSC_RXREQ_dontcare (IFX_SSC_RXREQ_readmask & IFX_SSC_RXREQ_writemask & ~IFX_SSC_RXREQ_hwmask)
+
+/* address of the Receive Count Register of the SSC */
+#define IFX_SSC_RXCNT               0x00000084
+#define IFX_SSC_RXCNT_readmask  0x0000FFFF
+#define IFX_SSC_RXCNT_writemask 0x00000000
+#define IFX_SSC_RXCNT_hwmask    0x0000FFFF
+#define IFX_SSC_RXCNT_dontcare (IFX_SSC_RXCNT_readmask & IFX_SSC_RXCNT_writemask & ~IFX_SSC_RXCNT_hwmask)
+
+/* address of the DMA Configuration Register of the SSC */
+#define IFX_SSC_DMACON               0x000000EC
+#define IFX_SSC_DMACON_readmask  0x0000FFFF
+#define IFX_SSC_DMACON_writemask 0x00000000
+#define IFX_SSC_DMACON_hwmask    0x0000FFFF
+#define IFX_SSC_DMACON_dontcare (IFX_SSC_DMACON_readmask & IFX_SSC_DMACON_writemask & ~IFX_SSC_DMACON_hwmask)
+
+//------------------------------------------------------
+// interrupt register for enabling interrupts, mask register of irq_reg
+#define IFX_SSC_IRN_EN 0xF4
+// read/write
+#define IFX_SSC_IRN_EN_readmask  0x0000000F
+#define IFX_SSC_IRN_EN_writemask 0x0000000F
+#define IFX_SSC_IRN_EN_hwmask    0x00000000
+#define IFX_SSC_IRN_EN_dontcare  (IFX_SSC_IRN_EN_readmask & IFX_SSC_IRN_EN_writemask & ~IFX_SSC_IRN_EN_hwmask)
+
+// interrupt register for accessing interrupts
+#define IFX_SSC_IRN_CR                0xF8
+// read/write
+#define IFX_SSC_IRN_CR_readmask  0x0000000F
+#define IFX_SSC_IRN_CR_writemask 0x0000000F
+#define IFX_SSC_IRN_CR_hwmask    0x0000000F
+#define IFX_SSC_IRN_CR_dontcare  (IFX_SSC_IRN_CR_readmask & IFX_SSC_IRN_CR_writemask & ~IFX_SSC_IRN_CR_hwmask)
+
+// interrupt register for stimulating interrupts
+#define IFX_SSC_IRN_ICR                  0xFC
+// read/write
+#define IFX_SSC_IRN_ICR_readmask  0x0000000F
+#define IFX_SSC_IRN_ICR_writemask 0x0000000F
+#define IFX_SSC_IRN_ICR_hwmask    0x00000000
+#define IFX_SSC_IRN_ICR_dontcare  (IFX_SSC_IRN_ICR_readmask & IFX_SSC_IRN_ICR_writemask & ~IFX_SSC_IRN_ICR_hwmask)
+
+//---------------------------------------------------------------------
+// Number of IRQs and bitposition of IRQ
+#define IFX_SSC_NUM_IRQ           4
+#define IFX_SSC_T_BIT       0x00000001
+#define IFX_SSC_R_BIT       0x00000002
+#define IFX_SSC_E_BIT       0x00000004
+#define IFX_SSC_F_BIT       0x00000008
+
+/* bit masks for SSC registers */
+
+/* ID register */
+#define IFX_SSC_PERID_REV_MASK      0x0000001F
+#define IFX_SSC_PERID_CFG_MASK      0x00000020
+#define IFX_SSC_PERID_ID_MASK       0x0000FF00
+#define IFX_SSC_PERID_REV_OFFSET    0
+#define IFX_SSC_PERID_CFG_OFFSET    5
+#define IFX_SSC_PERID_ID_OFFSET     8
+#define IFX_SSC_PERID_ID            0x45
+#define IFX_SSC_PERID_DMA_ON        0x00000020
+#define IFX_SSC_PERID_RXFS_MASK     0x003F0000
+#define IFX_SSC_PERID_RXFS_OFFSET   16
+#define IFX_SSC_PERID_TXFS_MASK     0x3F000000
+#define IFX_SSC_PERID_TXFS_OFFSET   24
+
+/* PISEL register */
+#define IFX_SSC_PISEL_MASTER_IN_A       0x0000
+#define IFX_SSC_PISEL_MASTER_IN_B       0x0001
+#define IFX_SSC_PISEL_SLAVE_IN_A        0x0000
+#define IFX_SSC_PISEL_SLAVE_IN_B        0x0002
+#define IFX_SSC_PISEL_CLOCK_IN_A        0x0000
+#define IFX_SSC_PISEL_CLOCK_IN_B        0x0004
+
+/* IFX_SSC_CON register */
+#define IFX_SSC_CON_ECHO_MODE_ON       0x01000000
+#define IFX_SSC_CON_ECHO_MODE_OFF      0x00000000
+#define IFX_SSC_CON_IDLE_HIGH          0x00800000
+#define IFX_SSC_CON_IDLE_LOW           0x00000000
+#define IFX_SSC_CON_ENABLE_BYTE_VALID  0x00400000
+#define IFX_SSC_CON_DISABLE_BYTE_VALID 0x00000000
+#define IFX_SSC_CON_DATA_WIDTH_OFFSET  16
+#define IFX_SSC_CON_DATA_WIDTH_MASK    0x001F0000
+#define IFX_SSC_ENCODE_DATA_WIDTH(width) (((width - 1) << IFX_SSC_CON_DATA_WIDTH_OFFSET) & IFX_SSC_CON_DATA_WIDTH_MASK)
+
+#define IFX_SSC_CON_RESET_ON_BAUDERR   0x00002000
+#define IFX_SSC_CON_GO_ON_ON_BAUDERR   0x00000000
+
+#define IFX_SSC_CON_RX_UFL_CHECK       0x00001000
+#define IFX_SSC_CON_RX_UFL_IGNORE      0x00000000
+#define IFX_SSC_CON_TX_UFL_CHECK       0x00000800
+#define IFX_SSC_CON_TX_UFL_IGNORE      0x00000000
+#define IFX_SSC_CON_ABORT_ERR_CHECK    0x00000400
+#define IFX_SSC_CON_ABORT_ERR_IGNORE   0x00000000
+#define IFX_SSC_CON_RX_OFL_CHECK       0x00000200
+#define IFX_SSC_CON_RX_OFL_IGNORE      0x00000000
+#define IFX_SSC_CON_TX_OFL_CHECK       0x00000100
+#define IFX_SSC_CON_TX_OFL_IGNORE      0x00000000
+#define IFX_SSC_CON_ALL_ERR_CHECK      0x00001F00
+#define IFX_SSC_CON_ALL_ERR_IGNORE     0x00000000
+
+#define IFX_SSC_CON_LOOPBACK_MODE      0x00000080
+#define IFX_SSC_CON_NO_LOOPBACK        0x00000000
+#define IFX_SSC_CON_HALF_DUPLEX        0x00000080
+#define IFX_SSC_CON_FULL_DUPLEX        0x00000000
+#define IFX_SSC_CON_CLOCK_FALL         0x00000040
+#define IFX_SSC_CON_CLOCK_RISE         0x00000000
+#define IFX_SSC_CON_SHIFT_THEN_LATCH   0x00000000
+#define IFX_SSC_CON_LATCH_THEN_SHIFT   0x00000020
+#define IFX_SSC_CON_MSB_FIRST          0x00000010
+#define IFX_SSC_CON_LSB_FIRST          0x00000000
+#define IFX_SSC_CON_ENABLE_CSB         0x00000008
+#define IFX_SSC_CON_DISABLE_CSB        0x00000000
+#define IFX_SSC_CON_INVERT_CSB         0x00000004
+#define IFX_SSC_CON_TRUE_CSB           0x00000000
+#define IFX_SSC_CON_RX_OFF             0x00000002
+#define IFX_SSC_CON_RX_ON              0x00000000
+#define IFX_SSC_CON_TX_OFF             0x00000001
+#define IFX_SSC_CON_TX_ON              0x00000000
+
+/* IFX_SSC_STATE register */
+#define IFX_SSC_STATE_RX_BYTE_VALID_OFFSET 28
+#define IFX_SSC_STATE_RX_BYTE_VALID_MASK   0x70000000
+#define IFX_SSC_DECODE_RX_BYTE_VALID(con_state) ((con_state & IFX_SSC_STATE_RX_BYTE_VALID_MASK) >> IFX_SSC_STATE_RX_BYTE_VALID_OFFSET)
+#define IFX_SSC_STATE_TX_BYTE_VALID_OFFSET 24
+#define IFX_SSC_STATE_TX_BYTE_VALID_MASK   0x07000000
+#define IFX_SSC_DECODE_TX_BYTE_VALID(con_state) ((con_state & IFX_SSC_STATE_TX_BYTE_VALID_MASK) >> IFX_SSC_STATE_TX_BYTE_VALID_OFFSET)
+#define IFX_SSC_STATE_BIT_COUNT_OFFSET     16
+#define IFX_SSC_STATE_BIT_COUNT_MASK       0x001F0000
+#define IFX_SSC_DECODE_DATA_WIDTH(con_state) (((con_state & IFX_SSC_STATE_BIT_COUNT_MASK) >> IFX_SSC_STATE_BIT_COUNT_OFFSET) + 1)
+#define IFX_SSC_STATE_BUSY                 0x00002000
+#define IFX_SSC_STATE_RX_UFL               0x00001000
+#define IFX_SSC_STATE_TX_UFL               0x00000800
+#define IFX_SSC_STATE_ABORT_ERR            0x00000400
+#define IFX_SSC_STATE_RX_OFL               0x00000200
+#define IFX_SSC_STATE_TX_OFL               0x00000100
+#define IFX_SSC_STATE_MODE_ERR             0x00000080
+#define IFX_SSC_STATE_SLAVE_IS_SELECTED    0x00000004
+#define IFX_SSC_STATE_IS_MASTER            0x00000002
+#define IFX_SSC_STATE_IS_ENABLED           0x00000001
+
+/* WHBSTATE register */
+#define IFX_SSC_WHBSTATE_DISABLE_SSC        0x0001
+#define IFX_SSC_WHBSTATE_CONFIGURATION_MODE 0x0001
+#define IFX_SSC_WHBSTATE_CLR_ENABLE         0x0001
+
+#define IFX_SSC_WHBSTATE_ENABLE_SSC         0x0002
+#define IFX_SSC_WHBSTATE_RUN_MODE           0x0002
+#define IFX_SSC_WHBSTATE_SET_ENABLE         0x0002
+
+#define IFX_SSC_WHBSTATE_SLAVE_MODE         0x0004
+#define IFX_SSC_WHBSTATE_CLR_MASTER_SELECT  0x0004
+
+#define IFX_SSC_WHBSTATE_MASTER_MODE        0x0008
+#define IFX_SSC_WHBSTATE_SET_MASTER_SELECT  0x0008
+
+#define IFX_SSC_WHBSTATE_CLR_RX_UFL_ERROR   0x0010
+#define IFX_SSC_WHBSTATE_SET_RX_UFL_ERROR   0x0020
+
+#define IFX_SSC_WHBSTATE_CLR_MODE_ERROR     0x0040
+#define IFX_SSC_WHBSTATE_SET_MODE_ERROR     0x0080
+
+#define IFX_SSC_WHBSTATE_CLR_TX_OFL_ERROR   0x0100
+#define IFX_SSC_WHBSTATE_CLR_RX_OFL_ERROR   0x0200
+#define IFX_SSC_WHBSTATE_CLR_ABORT_ERROR    0x0400
+#define IFX_SSC_WHBSTATE_CLR_TX_UFL_ERROR   0x0800
+#define IFX_SSC_WHBSTATE_SET_TX_OFL_ERROR   0x1000
+#define IFX_SSC_WHBSTATE_SET_RX_OFL_ERROR   0x2000
+#define IFX_SSC_WHBSTATE_SET_ABORT_ERROR    0x4000
+#define IFX_SSC_WHBSTATE_SET_TX_UFL_ERROR   0x8000
+#define IFX_SSC_WHBSTATE_CLR_ALL_ERROR      0x0F50
+#define IFX_SSC_WHBSTATE_SET_ALL_ERROR      0xF0A0
+
+/* BR register */
+#define IFX_SSC_BR_BAUDRATE_OFFSET      0
+#define IFX_SSC_BR_BAUDRATE_MASK        0xFFFF
+
+/* BR_STAT register */
+#define IFX_SSC_BRSTAT_BAUDTIMER_OFFSET      0
+#define IFX_SSC_BRSTAT_BAUDTIMER_MASK        0xFFFF
+
+/* TB register */
+#define IFX_SSC_TB_DATA_OFFSET      0
+#define IFX_SSC_TB_DATA_MASK        0xFFFFFFFF
+
+/* RB register */
+#define IFX_SSC_RB_DATA_OFFSET      0
+#define IFX_SSC_RB_DATA_MASK        0xFFFFFFFF
+
+/* RXFCON and TXFCON registers */
+#define IFX_SSC_XFCON_FIFO_DISABLE      0x0000
+#define IFX_SSC_XFCON_FIFO_ENABLE       0x0001
+#define IFX_SSC_XFCON_FIFO_FLUSH        0x0002
+#define IFX_SSC_XFCON_ITL_MASK          0x00003F00
+#define IFX_SSC_XFCON_ITL_OFFSET        8
+
+/* FSTAT register */
+#define IFX_SSC_FSTAT_RECEIVED_WORDS_OFFSET  0
+#define IFX_SSC_FSTAT_RECEIVED_WORDS_MASK    0x003F
+#define IFX_SSC_FSTAT_TRANSMIT_WORDS_OFFSET  8
+#define IFX_SSC_FSTAT_TRANSMIT_WORDS_MASK    0x3F00
+
+/* GPOCON register */
+#define IFX_SSC_GPOCON_INVOUT0_POS      0
+#define IFX_SSC_GPOCON_INV_OUT0         0x00000001
+#define IFX_SSC_GPOCON_TRUE_OUT0        0x00000000
+#define IFX_SSC_GPOCON_INVOUT1_POS      1
+#define IFX_SSC_GPOCON_INV_OUT1         0x00000002
+#define IFX_SSC_GPOCON_TRUE_OUT1        0x00000000
+#define IFX_SSC_GPOCON_INVOUT2_POS      2
+#define IFX_SSC_GPOCON_INV_OUT2         0x00000003
+#define IFX_SSC_GPOCON_TRUE_OUT2        0x00000000
+#define IFX_SSC_GPOCON_INVOUT3_POS      3
+#define IFX_SSC_GPOCON_INV_OUT3         0x00000008
+#define IFX_SSC_GPOCON_TRUE_OUT3        0x00000000
+#define IFX_SSC_GPOCON_INVOUT4_POS      4
+#define IFX_SSC_GPOCON_INV_OUT4         0x00000010
+#define IFX_SSC_GPOCON_TRUE_OUT4        0x00000000
+#define IFX_SSC_GPOCON_INVOUT5_POS      5
+#define IFX_SSC_GPOCON_INV_OUT5         0x00000020
+#define IFX_SSC_GPOCON_TRUE_OUT5        0x00000000
+#define IFX_SSC_GPOCON_INVOUT6_POS      6
+#define IFX_SSC_GPOCON_INV_OUT6         0x00000040
+#define IFX_SSC_GPOCON_TRUE_OUT6        0x00000000
+#define IFX_SSC_GPOCON_INVOUT7_POS      7
+#define IFX_SSC_GPOCON_INV_OUT7         0x00000080
+#define IFX_SSC_GPOCON_TRUE_OUT7        0x00000000
+#define IFX_SSC_GPOCON_INV_OUT_ALL      0x000000FF
+#define IFX_SSC_GPOCON_TRUE_OUT_ALL     0x00000000
+
+#define IFX_SSC_GPOCON_ISCSB0_POS       8
+#define IFX_SSC_GPOCON_IS_CSB0          0x00000100
+#define IFX_SSC_GPOCON_IS_GPO0          0x00000000
+#define IFX_SSC_GPOCON_ISCSB1_POS       9
+#define IFX_SSC_GPOCON_IS_CSB1          0x00000200
+#define IFX_SSC_GPOCON_IS_GPO1          0x00000000
+#define IFX_SSC_GPOCON_ISCSB2_POS       10
+#define IFX_SSC_GPOCON_IS_CSB2          0x00000400
+#define IFX_SSC_GPOCON_IS_GPO2          0x00000000
+#define IFX_SSC_GPOCON_ISCSB3_POS       11
+#define IFX_SSC_GPOCON_IS_CSB3          0x00000800
+#define IFX_SSC_GPOCON_IS_GPO3          0x00000000
+#define IFX_SSC_GPOCON_ISCSB4_POS       12
+#define IFX_SSC_GPOCON_IS_CSB4          0x00001000
+#define IFX_SSC_GPOCON_IS_GPO4          0x00000000
+#define IFX_SSC_GPOCON_ISCSB5_POS       13
+#define IFX_SSC_GPOCON_IS_CSB5          0x00002000
+#define IFX_SSC_GPOCON_IS_GPO5          0x00000000
+#define IFX_SSC_GPOCON_ISCSB6_POS       14
+#define IFX_SSC_GPOCON_IS_CSB6          0x00004000
+#define IFX_SSC_GPOCON_IS_GPO6          0x00000000
+#define IFX_SSC_GPOCON_ISCSB7_POS       15
+#define IFX_SSC_GPOCON_IS_CSB7          0x00008000
+#define IFX_SSC_GPOCON_IS_GPO7          0x00000000
+#define IFX_SSC_GPOCON_IS_CSB_ALL       0x0000FF00
+#define IFX_SSC_GPOCON_IS_GPO_ALL       0x00000000
+
+/* GPOSTAT register */
+#define IFX_SSC_GPOSTAT_OUT0            0x00000001
+#define IFX_SSC_GPOSTAT_OUT1            0x00000002
+#define IFX_SSC_GPOSTAT_OUT2            0x00000004
+#define IFX_SSC_GPOSTAT_OUT3            0x00000008
+#define IFX_SSC_GPOSTAT_OUT4            0x00000010
+#define IFX_SSC_GPOSTAT_OUT5            0x00000020
+#define IFX_SSC_GPOSTAT_OUT6            0x00000040
+#define IFX_SSC_GPOSTAT_OUT7            0x00000080
+#define IFX_SSC_GPOSTAT_OUT_ALL         0x000000FF
+
+/* WHBGPOSTAT register */
+#define IFX_SSC_WHBGPOSTAT_CLROUT0_POS  0
+#define IFX_SSC_WHBGPOSTAT_CLR_OUT0     0x00000001
+#define IFX_SSC_WHBGPOSTAT_CLROUT1_POS  1
+#define IFX_SSC_WHBGPOSTAT_CLR_OUT1     0x00000002
+#define IFX_SSC_WHBGPOSTAT_CLROUT2_POS  2
+#define IFX_SSC_WHBGPOSTAT_CLR_OUT2     0x00000004
+#define IFX_SSC_WHBGPOSTAT_CLROUT3_POS  3
+#define IFX_SSC_WHBGPOSTAT_CLR_OUT3     0x00000008
+#define IFX_SSC_WHBGPOSTAT_CLROUT4_POS  4
+#define IFX_SSC_WHBGPOSTAT_CLR_OUT4     0x00000010
+#define IFX_SSC_WHBGPOSTAT_CLROUT5_POS  5
+#define IFX_SSC_WHBGPOSTAT_CLR_OUT5     0x00000020
+#define IFX_SSC_WHBGPOSTAT_CLROUT6_POS  6
+#define IFX_SSC_WHBGPOSTAT_CLR_OUT6     0x00000040
+#define IFX_SSC_WHBGPOSTAT_CLROUT7_POS  7
+#define IFX_SSC_WHBGPOSTAT_CLR_OUT7     0x00000080
+#define IFX_SSC_WHBGPOSTAT_CLR_OUT_ALL  0x000000FF
+
+#define IFX_SSC_WHBGPOSTAT_OUT0_POS  0
+#define IFX_SSC_WHBGPOSTAT_OUT1_POS  1
+#define IFX_SSC_WHBGPOSTAT_OUT2_POS  2
+#define IFX_SSC_WHBGPOSTAT_OUT3_POS  3
+#define IFX_SSC_WHBGPOSTAT_OUT4_POS  4
+#define IFX_SSC_WHBGPOSTAT_OUT5_POS  5
+#define IFX_SSC_WHBGPOSTAT_OUT6_POS  6
+#define IFX_SSC_WHBGPOSTAT_OUT7_POS  7
+
+#define IFX_SSC_WHBGPOSTAT_SETOUT0_POS  8
+#define IFX_SSC_WHBGPOSTAT_SET_OUT0     0x00000100
+#define IFX_SSC_WHBGPOSTAT_SETOUT1_POS  9
+#define IFX_SSC_WHBGPOSTAT_SET_OUT1     0x00000200
+#define IFX_SSC_WHBGPOSTAT_SETOUT2_POS  10
+#define IFX_SSC_WHBGPOSTAT_SET_OUT2     0x00000400
+#define IFX_SSC_WHBGPOSTAT_SETOUT3_POS  11
+#define IFX_SSC_WHBGPOSTAT_SET_OUT3     0x00000800
+#define IFX_SSC_WHBGPOSTAT_SETOUT4_POS  12
+#define IFX_SSC_WHBGPOSTAT_SET_OUT4     0x00001000
+#define IFX_SSC_WHBGPOSTAT_SETOUT5_POS  13
+#define IFX_SSC_WHBGPOSTAT_SET_OUT5     0x00002000
+#define IFX_SSC_WHBGPOSTAT_SETOUT6_POS  14
+#define IFX_SSC_WHBGPOSTAT_SET_OUT6     0x00004000
+#define IFX_SSC_WHBGPOSTAT_SETOUT7_POS  15
+#define IFX_SSC_WHBGPOSTAT_SET_OUT7     0x00008000
+#define IFX_SSC_WHBGPOSTAT_SET_OUT_ALL  0x0000FF00
+
+/* SFCON register */
+#define IFX_SSC_SFCON_SF_ENABLE                0x00000001
+#define IFX_SSC_SFCON_SF_DISABLE               0x00000000
+#define IFX_SSC_SFCON_FIR_ENABLE_BEFORE_PAUSE  0x00000004
+#define IFX_SSC_SFCON_FIR_DISABLE_BEFORE_PAUSE 0x00000000
+#define IFX_SSC_SFCON_FIR_ENABLE_AFTER_PAUSE   0x00000008
+#define IFX_SSC_SFCON_FIR_DISABLE_AFTER_PAUSE  0x00000000
+#define IFX_SSC_SFCON_DATA_LENGTH_MASK         0x0000FFF0
+#define IFX_SSC_SFCON_DATA_LENGTH_OFFSET       4
+#define IFX_SSC_SFCON_PAUSE_DATA_MASK          0x00030000
+#define IFX_SSC_SFCON_PAUSE_DATA_OFFSET        16
+#define IFX_SSC_SFCON_PAUSE_DATA_0             0x00000000
+#define IFX_SSC_SFCON_PAUSE_DATA_1             0x00010000
+#define IFX_SSC_SFCON_PAUSE_DATA_IDLE          0x00020000
+#define IFX_SSC_SFCON_PAUSE_CLOCK_MASK         0x000C0000
+#define IFX_SSC_SFCON_PAUSE_CLOCK_OFFSET       18
+#define IFX_SSC_SFCON_PAUSE_CLOCK_0            0x00000000
+#define IFX_SSC_SFCON_PAUSE_CLOCK_1            0x00040000
+#define IFX_SSC_SFCON_PAUSE_CLOCK_IDLE         0x00080000
+#define IFX_SSC_SFCON_PAUSE_CLOCK_RUN          0x000C0000
+#define IFX_SSC_SFCON_STOP_AFTER_PAUSE         0x00100000
+#define IFX_SSC_SFCON_CONTINUE_AFTER_PAUSE     0x00000000
+#define IFX_SSC_SFCON_PAUSE_LENGTH_MASK        0xFFC00000
+#define IFX_SSC_SFCON_PAUSE_LENGTH_OFFSET      22
+#define IFX_SSC_SFCON_DATA_LENGTH_MAX	       4096
+#define IFX_SSC_SFCON_PAUSE_LENGTH_MAX	       1024
+
+#define IFX_SSC_SFCON_EXTRACT_DATA_LENGTH(sfcon)  ((sfcon & IFX_SSC_SFCON_DATA_LENGTH_MASK) >> IFX_SSC_SFCON_DATA_LENGTH_OFFSET)
+#define IFX_SSC_SFCON_EXTRACT_PAUSE_LENGTH(sfcon) ((sfcon & IFX_SSC_SFCON_PAUSE_LENGTH_MASK) >> IFX_SSC_SFCON_PAUSE_LENGTH_OFFSET)
+#define IFX_SSC_SFCON_SET_DATA_LENGTH(value)      ((value << IFX_SSC_SFCON_DATA_LENGTH_OFFSET) & IFX_SSC_SFCON_DATA_LENGTH_MASK)
+#define IFX_SSC_SFCON_SET_PAUSE_LENGTH(value)      ((value << IFX_SSC_SFCON_PAUSE_LENGTH_OFFSET) & IFX_SSC_SFCON_PAUSE_LENGTH_MASK)
+
+/* SFSTAT register */
+#define IFX_SSC_SFSTAT_IN_DATA            0x00000001
+#define IFX_SSC_SFSTAT_IN_PAUSE           0x00000002
+#define IFX_SSC_SFSTAT_DATA_COUNT_MASK    0x0000FFF0
+#define IFX_SSC_SFSTAT_DATA_COUNT_OFFSET  4
+#define IFX_SSC_SFSTAT_PAUSE_COUNT_MASK   0xFFF00000
+#define IFX_SSC_SFSTAT_PAUSE_COUNT_OFFSET 20
+
+#define IFX_SSC_SFSTAT_EXTRACT_DATA_COUNT(sfstat) ((sfstat & IFX_SSC_SFSTAT_DATA_COUNT_MASK) >> IFX_SSC_SFSTAT_DATA_COUNT_OFFSET)
+#define IFX_SSC_SFSTAT_EXTRACT_PAUSE_COUNT(sfstat) ((sfstat & IFX_SSC_SFSTAT_PAUSE_COUNT_MASK) >> IFX_SSC_SFSTAT_PAUSE_COUNT_OFFSET)
+
+/* RXREQ register */
+#define IFX_SSC_RXREQ_RXCOUNT_MASK       0x0000FFFF
+#define IFX_SSC_RXREQ_RXCOUNT_OFFSET     0
+
+/* RXCNT register */
+#define IFX_SSC_RXCNT_TODO_MASK       0x0000FFFF
+#define IFX_SSC_RXCNT_TODO_OFFSET     0
+
+/* DMACON register */
+#define IFX_SSC_DMACON_RXON           0x00000001
+#define IFX_SSC_DMACON_RXOFF          0x00000000
+#define IFX_SSC_DMACON_TXON           0x00000002
+#define IFX_SSC_DMACON_TXOFF          0x00000000
+#define IFX_SSC_DMACON_DMAON          0x00000003
+#define IFX_SSC_DMACON_DMAOFF         0x00000000
+#define IFX_SSC_DMACON_CLASS_MASK     0x0000000C
+#define IFX_SSC_DMACON_CLASS_OFFSET   2
+
+/* register access macros */
+#define ifx_ssc_fstat_received_words(status)    (status & 0x003F)
+#define ifx_ssc_fstat_words_to_transmit(status) ((status & 0x3F00) >> 8)
+
+#define ifx_ssc_change_status(data, addr)  WRITE_PERIPHERAL_REGISTER(data, (PHYS_OFFSET + addr + IFX_SSC_WHBSTATE))
+#define ifx_ssc_set_config(data, addr)     WRITE_PERIPHERAL_REGISTER(data, (PHYS_OFFSET + addr + IFX_SSC_CON))
+#define ifx_ssc_get_config(addr)           READ_PERIPHERAL_REGISTER((PHYS_OFFSET + addr + IFX_SSC_CON))
+#define ifx_ssc_get_status(addr)           READ_PERIPHERAL_REGISTER((PHYS_OFFSET + addr + IFX_SSC_STATE))
+#define ifx_ssc_receive(addr)              READ_PERIPHERAL_REGISTER((PHYS_OFFSET + addr + IFX_SSC_RB))
+#define ifx_ssc_transmit(data, addr)       WRITE_PERIPHERAL_REGISTER(data, (PHYS_OFFSET + addr + IFX_SSC_TB))
+#define ifx_ssc_fifo_status(addr)          READ_PERIPHERAL_REGISTER((PHYS_OFFSET + addr + IFX_SSC_FSTAT))
+#define ifx_ssc_set_baudrate(data, addr)   WRITE_PERIPHERAL_REGISTER(data, (PHYS_OFFSET + addr + IFX_SSC_BR))
+
+#define ifx_ssc_extract_rx_fifo_size(id)   ((id & IFX_SSC_PERID_RXFS_MASK) >> IFX_SSC_PERID_RXFS_OFFSET)
+#define ifx_ssc_extract_tx_fifo_size(id)   ((id & IFX_SSC_PERID_TXFS_MASK) >> IFX_SSC_PERID_TXFS_OFFSET)
+
+#endif
diff --git a/target/linux/danube/patches/110-drivers.patch b/target/linux/danube/patches/110-drivers.patch
index 862504ec01..35a2024bb6 100644
--- a/target/linux/danube/patches/110-drivers.patch
+++ b/target/linux/danube/patches/110-drivers.patch
@@ -81,12 +81,13 @@ Index: linux-2.6.23/drivers/char/watchdog/Makefile
 Index: linux-2.6.23/drivers/char/Makefile
 ===================================================================
 --- linux-2.6.23.orig/drivers/char/Makefile	2007-12-13 20:41:42.000000000 +0100
-+++ linux-2.6.23/drivers/char/Makefile	2007-12-14 22:30:59.000000000 +0100
-@@ -135,3 +135,7 @@
++++ linux-2.6.23/drivers/char/Makefile	2007-12-14 22:41:07.000000000 +0100
+@@ -135,3 +135,8 @@
  	rm $@.tmp
  
  endif
 +
 +obj-$(CONFIG_DANUBE_LED)	+= danube_led.o
 +obj-$(CONFIG_DANUBE_GPIO)	+= danube_gpio.o
++obj-$(CONFIG_DANUBE_SSC)	+= danube_ssc.o
 +obj-$(CONFIG_DANUBE_EEPROM)	+= danube_eeprom.o