ARM: imx: dynamically allocate imx2-wdt devices

Currently there is no platform data used in the driver.  In case this
changes and for consistency NULL is passed unused to the soc specific
functions.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>

4 files changed, 50 insertions, 0 deletions

diff --git a/arch/arm/plat-mxc/devices/Kconfig b/arch/arm/plat-mxc/devices/Kconfig
index 37d7e00..01b0d0c 100644
--- a/arch/arm/plat-mxc/devices/Kconfig
+++ b/arch/arm/plat-mxc/devices/Kconfig
@@ -13,6 +13,9 @@ config IMX_HAVE_PLATFORM_GPIO_KEYS
 	bool
 	default y if ARCH_MX51
 	
+config IMX_HAVE_PLATFORM_IMX2_WDT
+	bool
+
 config IMX_HAVE_PLATFORM_IMX_I2C
 	bool
 
diff --git a/arch/arm/plat-mxc/devices/Makefile b/arch/arm/plat-mxc/devices/Makefile
index 88392fc..224f665 100644
--- a/arch/arm/plat-mxc/devices/Makefile
+++ b/arch/arm/plat-mxc/devices/Makefile
@@ -2,6 +2,7 @@ obj-$(CONFIG_IMX_HAVE_PLATFORM_ESDHC) += platform-esdhc.o
 obj-$(CONFIG_IMX_HAVE_PLATFORM_FEC) += platform-fec.o
 obj-$(CONFIG_IMX_HAVE_PLATFORM_FLEXCAN) += platform-flexcan.o
 obj-$(CONFIG_IMX_HAVE_PLATFORM_GPIO_KEYS) += platform-gpio_keys.o
+obj-$(CONFIG_IMX_HAVE_PLATFORM_IMX2_WDT) += platform-imx2-wdt.o
 obj-y += platform-imx-dma.o
 obj-$(CONFIG_IMX_HAVE_PLATFORM_IMX_I2C) += platform-imx-i2c.o
 obj-$(CONFIG_IMX_HAVE_PLATFORM_IMX_SSI) += platform-imx-ssi.o
diff --git a/arch/arm/plat-mxc/devices/platform-imx2-wdt.c b/arch/arm/plat-mxc/devices/platform-imx2-wdt.c
new file mode 100644
index 0000000..86eb7f1
--- /dev/null
+++ b/arch/arm/plat-mxc/devices/platform-imx2-wdt.c
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2010 Pengutronix
+ * Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>
+ *
+ * This program is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License version 2 as published by the
+ * Free Software Foundation.
+ */
+#include <asm/sizes.h>
+#include <mach/hardware.h>
+#include <mach/devices-common.h>
+
+#define imx_imx2_wdt_data_entry_single(soc)				\
+	{								\
+		.iobase = soc ## _WDOG_BASE_ADDR,			\
+	}
+
+#ifdef CONFIG_SOC_IMX21
+const struct imx_imx2_wdt_data imx21_imx2_wdt_data __initconst =
+	imx_imx2_wdt_data_entry_single(MX21);
+#endif /* ifdef CONFIG_SOC_IMX21 */
+
+#ifdef CONFIG_SOC_IMX27
+const struct imx_imx2_wdt_data imx27_imx2_wdt_data __initconst =
+	imx_imx2_wdt_data_entry_single(MX27);
+#endif /* ifdef CONFIG_SOC_IMX27 */
+
+struct platform_device *__init imx_add_imx2_wdt(
+		const struct imx_imx2_wdt_data *data)
+{
+	struct resource res[] = {
+		{
+			.start = data->iobase,
+			.end = data->iobase + SZ_4K - 1,
+			.flags = IORESOURCE_MEM,
+		},
+	};
+	return imx_add_platform_device("imx2-wdt", 0,
+			res, ARRAY_SIZE(res), NULL, 0);
+}
diff --git a/arch/arm/plat-mxc/include/mach/devices-common.h b/arch/arm/plat-mxc/include/mach/devices-common.h
index e31fc50..a0ac8454 100644
--- a/arch/arm/plat-mxc/include/mach/devices-common.h
+++ b/arch/arm/plat-mxc/include/mach/devices-common.h
@@ -43,6 +43,12 @@ struct platform_device *__init imx_add_flexcan(int id,
 struct platform_device *__init imx_add_gpio_keys(
 		const struct gpio_keys_platform_data *pdata);
 
+struct imx_imx2_wdt_data {
+	resource_size_t iobase;
+};
+struct platform_device *__init imx_add_imx2_wdt(
+		const struct imx_imx2_wdt_data *data);
+
 #include <mach/i2c.h>
 struct imx_imx_i2c_data {
 	int id;