From: Huang Shijie <b32955@freescale.com>
Date: Wed, 27 Apr 2011 02:29:31 +0000 (+0800)
Subject: ENGR00143126-2 ARM: add DMA device for mx50
X-Git-Tag: v3.0.35-fsl~2355
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=978817929c1ef37f2c45a38c1109361553ce3332;p=karo-tx-linux.git

ENGR00143126-2 ARM: add DMA device for mx50

add dma device for mx50.

Signed-off-by: Huang Shijie <b32955@freescale.com>
---

diff --git a/arch/arm/mach-mx5/board-mx50_rdp.c b/arch/arm/mach-mx5/board-mx50_rdp.c
index bbaeef79029d..759b128dcd45 100755
--- a/arch/arm/mach-mx5/board-mx50_rdp.c
+++ b/arch/arm/mach-mx5/board-mx50_rdp.c
@@ -259,6 +259,7 @@ static void __init mx50_rdp_board_init(void)
 
 	imx50_add_cspi(3, &mx50_rdp_spi_pdata);
 
+	imx50_add_dma();
 	imx50_add_imx_uart(0, NULL);
 	imx50_add_imx_uart(1, NULL);
 	imx50_add_srtc();
diff --git a/arch/arm/mach-mx5/clock_mx50.c b/arch/arm/mach-mx5/clock_mx50.c
index 48f9de552079..ff3b0eb0f771 100755
--- a/arch/arm/mach-mx5/clock_mx50.c
+++ b/arch/arm/mach-mx5/clock_mx50.c
@@ -3332,7 +3332,7 @@ static struct clk_lookup lookups[] = {
 	_REGISTER_CLOCK(NULL, "dcp_clk", dcp_clk),
 	_REGISTER_CLOCK(NULL, "ocotp_ctrl_apb", ocotp_clk),
 	_REGISTER_CLOCK(NULL, "ocram_clk", ocram_clk),
-	_REGISTER_CLOCK(NULL, "apbh_dma_clk", apbh_dma_clk),
+	_REGISTER_CLOCK("mxs-dma-apbh",	NULL, apbh_dma_clk),
 	_REGISTER_CLOCK(NULL, "sys_clk", sys_clk),
 	_REGISTER_CLOCK(NULL, "elcdif_pix", elcdif_pix_clk),
 	_REGISTER_CLOCK(NULL, "display_axi", display_axi_clk),
diff --git a/arch/arm/mach-mx5/devices-imx50.h b/arch/arm/mach-mx5/devices-imx50.h
index 18c9609e5789..cf8af0eefd6e 100755
--- a/arch/arm/mach-mx5/devices-imx50.h
+++ b/arch/arm/mach-mx5/devices-imx50.h
@@ -29,6 +29,9 @@ extern const struct imx_srtc_data imx50_imx_srtc_data __initconst;
 #define imx50_add_srtc()	\
 	imx_add_srtc(&imx50_imx_srtc_data)
 
+extern const struct imx_dma_data imx50_dma_data __initconst;
+#define imx50_add_dma()	imx_add_dma(&imx50_dma_data);
+
 extern const struct imx_fec_data imx50_fec_data;
 #define imx50_add_fec(pdata)	\
 	imx_add_fec(&imx50_fec_data, pdata)
diff --git a/arch/arm/plat-mxc/devices/Kconfig b/arch/arm/plat-mxc/devices/Kconfig
index d3b1350037f4..b146fc1617be 100755
--- a/arch/arm/plat-mxc/devices/Kconfig
+++ b/arch/arm/plat-mxc/devices/Kconfig
@@ -1,3 +1,6 @@
+config IMX_HAVE_PLATFORM_DMA
+	bool
+
 config IMX_HAVE_PLATFORM_FEC
 	bool
 	default y if ARCH_MX25 || SOC_IMX27 || SOC_IMX35 || SOC_IMX51 || SOC_IMX53
diff --git a/arch/arm/plat-mxc/devices/Makefile b/arch/arm/plat-mxc/devices/Makefile
index e3dd8d8b75da..149b6734b350 100755
--- a/arch/arm/plat-mxc/devices/Makefile
+++ b/arch/arm/plat-mxc/devices/Makefile
@@ -1,3 +1,4 @@
+obj-$(CONFIG_IMX_HAVE_PLATFORM_DMA) += platform-dma.o
 obj-$(CONFIG_IMX_HAVE_PLATFORM_FEC) += platform-fec.o
 obj-$(CONFIG_IMX_HAVE_PLATFORM_FLEXCAN) += platform-flexcan.o
 obj-$(CONFIG_IMX_HAVE_PLATFORM_FSL_USB2_UDC) += platform-fsl-usb2-udc.o
diff --git a/arch/arm/plat-mxc/devices/platform-dma.c b/arch/arm/plat-mxc/devices/platform-dma.c
new file mode 100644
index 000000000000..7a73c230fd44
--- /dev/null
+++ b/arch/arm/plat-mxc/devices/platform-dma.c
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2011 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 version 2 as published by the
+ * Free Software Foundation.
+ */
+#include <linux/compiler.h>
+#include <linux/err.h>
+#include <linux/init.h>
+
+#include <mach/mx50.h>
+#include <mach/devices-common.h>
+
+#ifdef CONFIG_SOC_IMX50
+const struct imx_dma_data imx50_dma_data __initconst = {
+	.iobase = MX50_APBHDMA_BASE_ADDR,
+};
+#endif
+
+struct platform_device *__init imx_add_dma(
+			const struct imx_dma_data *data)
+{
+	struct resource res[] = {
+		{
+			.start = data->iobase,
+			.end = data->iobase + SZ_8K - 1,
+			.flags = IORESOURCE_MEM,
+		},
+	};
+
+	return imx_add_platform_device_dmamask("mxs-dma-apbh", -1,
+				res, ARRAY_SIZE(res), NULL, 0,
+				DMA_BIT_MASK(32));
+}
diff --git a/arch/arm/plat-mxc/include/mach/devices-common.h b/arch/arm/plat-mxc/include/mach/devices-common.h
index 56f26ac3a45c..c62f7b763e7e 100755
--- a/arch/arm/plat-mxc/include/mach/devices-common.h
+++ b/arch/arm/plat-mxc/include/mach/devices-common.h
@@ -24,6 +24,11 @@ static inline struct platform_device *imx_add_platform_device(
 			name, id, res, num_resources, data, size_data, 0);
 }
 
+struct imx_dma_data {
+	resource_size_t iobase;
+};
+struct platform_device *__init imx_add_dma(const struct imx_dma_data *data);
+
 #include <linux/fec.h>
 struct imx_fec_data {
 	resource_size_t iobase;