ARM: MX3: modularize 'mx31lite' code

This commit splits the support code for LogicPD's mx31lite hardware
into module and board specific parts.

This introduces a new mandatory coreparam called 'mx31lite_baseboard'
which specifies the base board support to use. For now, only the LiteKit
development board is supported, and developers of own boards are
encouraged to use that as reference.

The UART support moved to the board code.
Some comments were amended along the way.

Signed-off-by: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 71 insertions, 0 deletions

diff --git a/arch/arm/mach-mx3/mx31lite-db.c b/arch/arm/mach-mx3/mx31lite-db.c
new file mode 100644
index 000000000000..751d15ec0b03
--- /dev/null
+++ b/arch/arm/mach-mx3/mx31lite-db.c
@@ -0,0 +1,71 @@
+/*
+ *  LogicPD i.MX31 SOM-LV development board support
+ *
+ *    Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
+ *
+ *  based on code for other MX31 boards,
+ *
+ *    Copyright 2005-2007 Freescale Semiconductor
+ *    Copyright (c) 2009 Alberto Panizzo <maramaopercheseimorto@gmail.com>
+ *    Copyright (C) 2009 Valentin Longchamp, EPFL Mobots group
+ *
+ * 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 <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+
+#include <mach/hardware.h>
+#include <mach/common.h>
+#include <mach/imx-uart.h>
+#include <mach/iomux-mx3.h>
+#include <mach/board-mx31lite.h>
+
+#include "devices.h"
+
+/*
+ * This file contains board-specific initialization routines for the
+ * LogicPD i.MX31 SOM-LV development board, aka 'LiteKit'.
+ * If you design an own baseboard for the module, use this file as base
+ * for support code.
+ */
+
+static unsigned int litekit_db_board_pins[] __initdata = {
+        /* UART1 */
+        MX31_PIN_CTS1__CTS1,
+        MX31_PIN_RTS1__RTS1,
+        MX31_PIN_TXD1__TXD1,
+        MX31_PIN_RXD1__RXD1,
+};
+
+/* UART */
+static struct imxuart_platform_data uart_pdata __initdata = {
+        .flags = IMXUART_HAVE_RTSCTS,
+};
+
+void __init mx31lite_db_init(void)
+{
+        mxc_iomux_setup_multiple_pins(litekit_db_board_pins,
+                                        ARRAY_SIZE(litekit_db_board_pins),
+                                        "development board pins");
+        mxc_register_device(&mxc_uart_device0, &uart_pdata);
+}
+