From 281e00a3be453a169d854f824a460359d10f92bb Mon Sep 17 00:00:00 2001
From: wdenk <wdenk>
Date: Sun, 1 Aug 2004 22:48:16 +0000
Subject: * Code cleanup

* Patch by Sascha Hauer, 28 Jun:
  - add generic support for Motorola i.MX architecture
  - add support for mx1ads, mx1fs2 and scb9328 boards

* Patches by Marc Leeman, 23 Jul 2004:
  - Add define for the PCI/Memory Buffer Configuration Register
  - corrected comments in cpu/mpc824x/cpu_init.c

* Add support for multiple serial interfaces
  (for example to allow modem dial-in / dial-out)
---
 cpu/arm920t/imx_generic.c | 90 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 90 insertions(+)
 create mode 100644 cpu/arm920t/imx_generic.c

(limited to 'cpu/arm920t/imx_generic.c')

diff --git a/cpu/arm920t/imx_generic.c b/cpu/arm920t/imx_generic.c
new file mode 100644
index 00000000000..aa7c8c159dc
--- /dev/null
+++ b/cpu/arm920t/imx_generic.c
@@ -0,0 +1,90 @@
+/*
+ *  arch/arm/mach-imx/generic.c
+ *
+ *  author: Sascha Hauer
+ *  Created: april 20th, 2004
+ *  Copyright: Synertronixx GmbH
+ *
+ *  Common code for i.MX machines
+ *
+ * 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
+ *
+ */
+
+#include <common.h>
+
+#ifdef CONFIG_IMX
+
+#include <asm/arch/imx-regs.h>
+
+void imx_gpio_mode(int gpio_mode)
+{
+	unsigned int pin = gpio_mode & GPIO_PIN_MASK;
+	unsigned int port = (gpio_mode & GPIO_PORT_MASK) >> 5;
+	unsigned int ocr = (gpio_mode & GPIO_OCR_MASK) >> 10;
+	unsigned int tmp;
+
+	/* Pullup enable */
+	if(gpio_mode & GPIO_PUEN)
+		PUEN(port) |= (1<<pin);
+	else
+		PUEN(port) &= ~(1<<pin);
+
+	/* Data direction */
+	if(gpio_mode & GPIO_OUT)
+		DDIR(port) |= 1<<pin;
+	else
+		DDIR(port) &= ~(1<<pin);
+
+	/* Primary / alternate function */
+	if(gpio_mode & GPIO_AF)
+		GPR(port) |= (1<<pin);
+	else
+		GPR(port) &= ~(1<<pin);
+
+	/* use as gpio? */
+	if( ocr == 3 )
+		GIUS(port) |= (1<<pin);
+	else
+		GIUS(port) &= ~(1<<pin);
+
+	/* Output / input configuration */
+	/* FIXME: I'm not very sure about OCR and ICONF, someone
+	 * should have a look over it
+	 */
+	if(pin<16) {
+		tmp = OCR1(port);
+		tmp &= ~( 3<<(pin*2));
+		tmp |= (ocr << (pin*2));
+		OCR1(port) = tmp;
+
+		if( gpio_mode &	GPIO_AOUT )
+			ICONFA1(port) &= ~( 3<<(pin*2));
+		if( gpio_mode &	GPIO_BOUT )
+			ICONFB1(port) &= ~( 3<<(pin*2));
+	} else {
+		tmp = OCR2(port);
+		tmp &= ~( 3<<((pin-16)*2));
+		tmp |= (ocr << ((pin-16)*2));
+		OCR2(port) = tmp;
+
+		if( gpio_mode &	GPIO_AOUT )
+			ICONFA2(port) &= ~( 3<<((pin-16)*2));
+		if( gpio_mode &	GPIO_BOUT )
+			ICONFB2(port) &= ~( 3<<((pin-16)*2));
+	}
+}
+
+#endif /* CONFIG_IMX */
-- 
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