i.MX2 family: Add basic device support

This patch adds a few on-chip devices for i.MX21/i.MX27 procesors.

Signed-off-by: Juergen Beisert <j.beisert@pengutronix.de>

2 files changed, 232 insertions, 1 deletions

diff --git a/arch/arm/mach-mx2/Makefile b/arch/arm/mach-mx2/Makefile
index 937192d..db4d9c6 100644
--- a/arch/arm/mach-mx2/Makefile
+++ b/arch/arm/mach-mx2/Makefile
@@ -4,4 +4,4 @@
 
 # Object file lists.
 
-obj-y	:=  system.o generic.o
+obj-y	:=  system.o generic.o devices.o
diff --git a/arch/arm/mach-mx2/devices.c b/arch/arm/mach-mx2/devices.c
new file mode 100644
index 0000000..a1f44c3
--- /dev/null
+++ b/arch/arm/mach-mx2/devices.c
@@ -0,0 +1,231 @@
+/*
+ * Author: MontaVista Software, Inc.
+ *       <source@mvista.com>
+ *
+ * Based on the OMAP devices.c
+ *
+ * 2005 (c) MontaVista Software, Inc. This file is licensed under the
+ * terms of the GNU General Public License version 2. This program is
+ * licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ *
+ * Copyright 2006-2007 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright 2008 Juergen Beisert, kernel@pengutronix.de
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/gpio.h>
+
+#include <asm/hardware.h>
+
+/*
+ * Resource definition for the MXC IrDA
+ */
+static struct resource mxc_irda_resources[] = {
+	[0] = {
+		.start   = UART3_BASE_ADDR,
+		.end     = UART3_BASE_ADDR + SZ_4K - 1,
+		.flags   = IORESOURCE_MEM,
+	},
+	[1] = {
+		.start   = MXC_INT_UART3,
+		.end     = MXC_INT_UART3,
+		.flags   = IORESOURCE_IRQ,
+	},
+};
+
+/* Platform Data for MXC IrDA */
+struct platform_device mxc_irda_device = {
+	.name = "mxc_irda",
+	.id = 0,
+	.num_resources = ARRAY_SIZE(mxc_irda_resources),
+	.resource = mxc_irda_resources,
+};
+
+/*
+ * General Purpose Timer
+ * - i.MX1: 2 timer (slighly different register handling)
+ * - i.MX21: 3 timer
+ * - i.MX27: 6 timer
+ */
+
+/* We use gpt0 as system timer, so do not add a device for this one */
+
+static struct resource timer1_resources[] = {
+	[0] = {
+		.start	= GPT2_BASE_ADDR,
+		.end	= GPT2_BASE_ADDR + 0x17,
+		.flags	= IORESOURCE_MEM
+	},
+	[1] = {
+		.start   = MXC_INT_GPT2,
+		.end     = MXC_INT_GPT2,
+		.flags   = IORESOURCE_IRQ,
+	}
+};
+
+struct platform_device mxc_gpt1 = {
+	.name = "imx_gpt",
+	.id = 1,
+	.num_resources = ARRAY_SIZE(timer1_resources),
+	.resource = timer1_resources
+};
+
+static struct resource timer2_resources[] = {
+	[0] = {
+		.start	= GPT3_BASE_ADDR,
+		.end	= GPT3_BASE_ADDR + 0x17,
+		.flags	= IORESOURCE_MEM
+	},
+	[1] = {
+		.start   = MXC_INT_GPT3,
+		.end     = MXC_INT_GPT3,
+		.flags   = IORESOURCE_IRQ,
+	}
+};
+
+struct platform_device mxc_gpt2 = {
+	.name = "imx_gpt",
+	.id = 2,
+	.num_resources = ARRAY_SIZE(timer2_resources),
+	.resource = timer2_resources
+};
+
+#ifdef CONFIG_MACH_MX27
+static struct resource timer3_resources[] = {
+	[0] = {
+		.start	= GPT4_BASE_ADDR,
+		.end	= GPT4_BASE_ADDR + 0x17,
+		.flags	= IORESOURCE_MEM
+	},
+	[1] = {
+		.start   = MXC_INT_GPT4,
+		.end     = MXC_INT_GPT4,
+		.flags   = IORESOURCE_IRQ,
+	}
+};
+
+struct platform_device mxc_gpt3 = {
+	.name = "imx_gpt",
+	.id = 3,
+	.num_resources = ARRAY_SIZE(timer3_resources),
+	.resource = timer3_resources
+};
+
+static struct resource timer4_resources[] = {
+	[0] = {
+		.start	= GPT5_BASE_ADDR,
+		.end	= GPT5_BASE_ADDR + 0x17,
+		.flags	= IORESOURCE_MEM
+	},
+	[1] = {
+		.start   = MXC_INT_GPT5,
+		.end     = MXC_INT_GPT5,
+		.flags   = IORESOURCE_IRQ,
+	}
+};
+
+struct platform_device mxc_gpt4 = {
+	.name = "imx_gpt",
+	.id = 4,
+	.num_resources = ARRAY_SIZE(timer4_resources),
+	.resource = timer4_resources
+};
+
+static struct resource timer5_resources[] = {
+	[0] = {
+		.start	= GPT6_BASE_ADDR,
+		.end	= GPT6_BASE_ADDR + 0x17,
+		.flags	= IORESOURCE_MEM
+	},
+	[1] = {
+		.start   = MXC_INT_GPT6,
+		.end     = MXC_INT_GPT6,
+		.flags   = IORESOURCE_IRQ,
+	}
+};
+
+struct platform_device mxc_gpt5 = {
+	.name = "imx_gpt",
+	.id = 5,
+	.num_resources = ARRAY_SIZE(timer5_resources),
+	.resource = timer5_resources
+};
+#endif
+
+/*
+ * Watchdog:
+ * - i.MX1
+ * - i.MX21
+ * - i.MX27
+ */
+static struct resource mxc_wdt_resources[] = {
+	{
+		.start	= WDOG_BASE_ADDR,
+		.end	= WDOG_BASE_ADDR + 0x30,
+		.flags	= IORESOURCE_MEM,
+	},
+};
+
+struct platform_device mxc_wdt = {
+	.name = "mxc_wdt",
+	.id = 0,
+	.num_resources = ARRAY_SIZE(mxc_wdt_resources),
+	.resource = mxc_wdt_resources,
+};
+
+/* GPIO port description */
+static struct mxc_gpio_port imx_gpio_ports[] = {
+	[0] = {
+		.chip.label = "gpio-0",
+		.irq = MXC_INT_GPIO,
+		.base = (void*)(AIPI_BASE_ADDR_VIRT + 0x15000 + 0x100 * 0),
+		.virtual_irq_start = MXC_MAX_INT_LINES,
+	},
+	[1] = {
+		.chip.label = "gpio-1",
+		.base = (void*)(AIPI_BASE_ADDR_VIRT + 0x15000 + 0x100 * 1),
+		.virtual_irq_start = MXC_MAX_INT_LINES + 32,
+	},
+	[2] = {
+		.chip.label = "gpio-2",
+		.base = (void*)(AIPI_BASE_ADDR_VIRT + 0x15000 + 0x100 * 2),
+		.virtual_irq_start = MXC_MAX_INT_LINES + 64,
+	},
+	[3] = {
+		.chip.label = "gpio-3",
+		.base = (void*)(AIPI_BASE_ADDR_VIRT + 0x15000 + 0x100 * 3),
+		.virtual_irq_start = MXC_MAX_INT_LINES + 96,
+	},
+	[4] = {
+		.chip.label = "gpio-4",
+		.base = (void*)(AIPI_BASE_ADDR_VIRT + 0x15000 + 0x100 * 4),
+		.virtual_irq_start = MXC_MAX_INT_LINES + 128,
+	},
+	[5] = {
+		.chip.label = "gpio-5",
+		.base = (void*)(AIPI_BASE_ADDR_VIRT + 0x15000 + 0x100 * 5),
+		.virtual_irq_start = MXC_MAX_INT_LINES + 160,
+	}
+};
+
+int __init mxc_register_gpios(void)
+{
+	return mxc_gpio_init(imx_gpio_ports, ARRAY_SIZE(imx_gpio_ports));
+}