ARM: imx: dynamically allocate mxc_w1 devices

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

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

4 files changed, 60 insertions, 0 deletions

diff --git a/arch/arm/plat-mxc/devices/Kconfig b/arch/arm/plat-mxc/devices/Kconfig
index 9aa6f3e..fb66467 100644
--- a/arch/arm/plat-mxc/devices/Kconfig
+++ b/arch/arm/plat-mxc/devices/Kconfig
@@ -25,5 +25,8 @@ config IMX_HAVE_PLATFORM_IMX_UART
 config IMX_HAVE_PLATFORM_MXC_NAND
 	bool
 
+config IMX_HAVE_PLATFORM_MXC_W1
+	bool
+
 config IMX_HAVE_PLATFORM_SPI_IMX
 	bool
diff --git a/arch/arm/plat-mxc/devices/Makefile b/arch/arm/plat-mxc/devices/Makefile
index 45aefeb..1d7d392 100644
--- a/arch/arm/plat-mxc/devices/Makefile
+++ b/arch/arm/plat-mxc/devices/Makefile
@@ -7,4 +7,5 @@ obj-$(CONFIG_IMX_HAVE_PLATFORM_IMX_I2C) += platform-imx-i2c.o
 obj-$(CONFIG_IMX_HAVE_PLATFORM_IMX_SSI) += platform-imx-ssi.o
 obj-$(CONFIG_IMX_HAVE_PLATFORM_IMX_UART) += platform-imx-uart.o
 obj-$(CONFIG_IMX_HAVE_PLATFORM_MXC_NAND) += platform-mxc_nand.o
+obj-$(CONFIG_IMX_HAVE_PLATFORM_MXC_W1) += platform-mxc_w1.o
 obj-$(CONFIG_IMX_HAVE_PLATFORM_SPI_IMX) +=  platform-spi_imx.o
diff --git a/arch/arm/plat-mxc/devices/platform-mxc_w1.c b/arch/arm/plat-mxc/devices/platform-mxc_w1.c
new file mode 100644
index 0000000..1355237
--- /dev/null
+++ b/arch/arm/plat-mxc/devices/platform-mxc_w1.c
@@ -0,0 +1,50 @@
+/*
+ * 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 <mach/hardware.h>
+#include <mach/devices-common.h>
+
+#define imx_mxc_w1_data_entry_single(soc)				\
+	{								\
+		.iobase = soc ## _OWIRE_BASE_ADDR,			\
+	}
+
+#ifdef CONFIG_SOC_IMX21
+const struct imx_mxc_w1_data imx21_mxc_w1_data __initconst =
+	imx_mxc_w1_data_entry_single(MX21);
+#endif /* ifdef CONFIG_SOC_IMX21 */
+
+#ifdef CONFIG_SOC_IMX27
+const struct imx_mxc_w1_data imx27_mxc_w1_data __initconst =
+	imx_mxc_w1_data_entry_single(MX27);
+#endif /* ifdef CONFIG_SOC_IMX27 */
+
+#ifdef CONFIG_ARCH_MX31
+const struct imx_mxc_w1_data imx31_mxc_w1_data __initconst =
+	imx_mxc_w1_data_entry_single(MX31);
+#endif /* ifdef CONFIG_ARCH_MX31 */
+
+#ifdef CONFIG_ARCH_MX35
+const struct imx_mxc_w1_data imx35_mxc_w1_data __initconst =
+	imx_mxc_w1_data_entry_single(MX35);
+#endif /* ifdef CONFIG_ARCH_MX35 */
+
+struct platform_device *__init imx_add_mxc_w1(
+		const struct imx_mxc_w1_data *data)
+{
+	struct resource res[] = {
+		{
+			.start = data->iobase,
+			.end = data->iobase + SZ_4K - 1,
+			.flags = IORESOURCE_MEM,
+		},
+	};
+
+	return imx_add_platform_device("mxc_w1", 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 8c6896f..431e0ef 100644
--- a/arch/arm/plat-mxc/include/mach/devices-common.h
+++ b/arch/arm/plat-mxc/include/mach/devices-common.h
@@ -99,6 +99,12 @@ struct platform_device *__init imx_add_mxc_nand(
 		const struct imx_mxc_nand_data *data,
 		const struct mxc_nand_platform_data *pdata);
 
+struct imx_mxc_w1_data {
+	resource_size_t iobase;
+};
+struct platform_device *__init imx_add_mxc_w1(
+		const struct imx_mxc_w1_data *data);
+
 #include <mach/spi.h>
 struct imx_spi_imx_data {
 	const char *devid;