mx5: Add registration of GPIOs for MX5 devices

Register the gpio irqs on Freescale's MX51 Babbage HW.

Signed-off-by: Dinh Nguyen <Dinh.Nguyen@freescale.com>
Signed-off-by: Amit Kucheria <amit.kucheria@canonical.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

arch/arm/mach-mx5/devices.c

@@ -1,5 +1,6 @@
 /*
  * Copyright 2009 Amit Kucheria <amit.kucheria@canonical.com>
+ * Copyright (C) 2010 Freescale Semiconductor, Inc.
  *
  * The code contained herein is licensed under the GNU General Public
  * License. You may obtain a copy of the GNU General Public License
@@ -10,8 +11,10 @@
  */
 
 #include <linux/platform_device.h>
+#include <linux/gpio.h>
 #include <mach/hardware.h>
 #include <mach/imx-uart.h>
+#include <mach/irqs.h>
 
 static struct resource uart0[] = {
 	{
@@ -89,8 +92,34 @@ struct platform_device mxc_fec_device = {
 	.resource = mxc_fec_resources,
 };
 
-/* Dummy definition to allow compiling in AVIC and TZIC simultaneously */
+static struct mxc_gpio_port mxc_gpio_ports[] = {
+	{
+		.chip.label = "gpio-0",
+		.base = MX51_IO_ADDRESS(MX51_GPIO1_BASE_ADDR),
+		.irq = MX51_MXC_INT_GPIO1_LOW,
+		.virtual_irq_start = MXC_GPIO_IRQ_START
+	},
+	{
+		.chip.label = "gpio-1",
+		.base = MX51_IO_ADDRESS(MX51_GPIO2_BASE_ADDR),
+		.irq = MX51_MXC_INT_GPIO2_LOW,
+		.virtual_irq_start = MXC_GPIO_IRQ_START + 32 * 1
+	},
+	{
+		.chip.label = "gpio-2",
+		.base = MX51_IO_ADDRESS(MX51_GPIO3_BASE_ADDR),
+		.irq = MX51_MXC_INT_GPIO3_LOW,
+		.virtual_irq_start = MXC_GPIO_IRQ_START + 32 * 2
+	},
+	{
+		.chip.label = "gpio-3",
+		.base = MX51_IO_ADDRESS(MX51_GPIO4_BASE_ADDR),
+		.irq = MX51_MXC_INT_GPIO4_LOW,
+		.virtual_irq_start = MXC_GPIO_IRQ_START + 32 * 3
+	},
+};
+
 int __init mxc_register_gpios(void)
 {
-	return 0;
+	return mxc_gpio_init(mxc_gpio_ports, ARRAY_SIZE(mxc_gpio_ports));
 }

arch/arm/plat-mxc/gpio.c

@@ -3,7 +3,7 @@
  * Copyright 2008 Juergen Beisert, kernel@pengutronix.de
  *
  * Based on code from Freescale,
- * Copyright 2004-2006 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright (C) 2004-2010 Freescale Semiconductor, Inc. All Rights Reserved.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -38,7 +38,6 @@ static int gpio_table_size;
 #define GPIO_ICR2	(cpu_is_mx1_mx2() ? 0x2C : 0x10)
 #define GPIO_IMR	(cpu_is_mx1_mx2() ? 0x30 : 0x14)
 #define GPIO_ISR	(cpu_is_mx1_mx2() ? 0x34 : 0x18)
-#define GPIO_ISR	(cpu_is_mx1_mx2() ? 0x34 : 0x18)
 
 #define GPIO_INT_LOW_LEV	(cpu_is_mx1_mx2() ? 0x3 : 0x0)
 #define GPIO_INT_HIGH_LEV	(cpu_is_mx1_mx2() ? 0x2 : 0x1)
@@ -289,7 +288,7 @@ int __init mxc_gpio_init(struct mxc_gpio_port *port, int cnt)
 		/* its a serious configuration bug when it fails */
 		BUG_ON( gpiochip_add(&port[i].chip) < 0 );
 
-		if (cpu_is_mx1() || cpu_is_mx3() || cpu_is_mx25()) {
+		if (cpu_is_mx1() || cpu_is_mx3() || cpu_is_mx25() || cpu_is_mx51()) {
 			/* setup one handler for each entry */
 			set_irq_chained_handler(port[i].irq, mx3_gpio_irq_handler);
 			set_irq_data(port[i].irq, &port[i]);

arch/arm/plat-mxc/tzic.c

@@ -1,5 +1,5 @@
 /*
- * Copyright 2004-2009 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright (C)2004-2010 Freescale Semiconductor, Inc. All Rights Reserved.
  *
  * The code contained herein is licensed under the GNU General Public
  * License. You may obtain a copy of the GNU General Public License
@@ -19,6 +19,7 @@
 #include <asm/mach/irq.h>
 
 #include <mach/hardware.h>
+#include <mach/common.h>
 
 /*
  *****************************************
@@ -144,6 +145,7 @@ void __init tzic_init_irq(void __iomem *irqbase)
 		set_irq_handler(i, handle_level_irq);
 		set_irq_flags(i, IRQF_VALID);
 	}
+	mxc_register_gpios();
 
 	pr_info("TrustZone Interrupt Controller (TZIC) initialized\n");
 }