1 files changed, 129 insertions, 0 deletions

diff --git a/arch/arm/plat-mxc/devices/platform-imx-dma.c b/arch/arm/plat-mxc/devices/platform-imx-dma.c
new file mode 100644
index 000000000000..02d989018059
--- /dev/null
+++ b/arch/arm/plat-mxc/devices/platform-imx-dma.c
@@ -0,0 +1,129 @@
+/*
+ * 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 <linux/compiler.h>
+#include <linux/err.h>
+#include <linux/init.h>
+
+#include <mach/hardware.h>
+#include <mach/devices-common.h>
+#ifdef SDMA_IS_MERGED
+#include <mach/sdma.h>
+#else
+struct sdma_platform_data {
+        int sdma_version;
+        char *cpu_name;
+        int to_version;
+};
+#endif
+
+struct imx_imx_sdma_data {
+        resource_size_t iobase;
+        resource_size_t irq;
+        struct sdma_platform_data pdata;
+};
+
+#define imx_imx_sdma_data_entry_single(soc, _sdma_version, _cpu_name, _to_version)\
+        {                                                               \
+                .iobase = soc ## _SDMA ## _BASE_ADDR,                   \
+                .irq = soc ## _INT_SDMA,                                \
+                .pdata = {                                              \
+                        .sdma_version = _sdma_version,                  \
+                        .cpu_name = _cpu_name,                          \
+                        .to_version = _to_version,                      \
+                },                                                      \
+        }
+
+#ifdef CONFIG_ARCH_MX25
+const struct imx_imx_sdma_data imx25_imx_sdma_data __initconst =
+        imx_imx_sdma_data_entry_single(MX25, 1, "imx25", 0);
+#endif /* ifdef CONFIG_ARCH_MX25 */
+
+#ifdef CONFIG_ARCH_MX31
+struct imx_imx_sdma_data imx31_imx_sdma_data __initdata =
+        imx_imx_sdma_data_entry_single(MX31, 1, "imx31", 0);
+#endif /* ifdef CONFIG_ARCH_MX31 */
+
+#ifdef CONFIG_ARCH_MX35
+struct imx_imx_sdma_data imx35_imx_sdma_data __initdata =
+        imx_imx_sdma_data_entry_single(MX35, 2, "imx35", 0);
+#endif /* ifdef CONFIG_ARCH_MX35 */
+
+#ifdef CONFIG_ARCH_MX51
+const struct imx_imx_sdma_data imx51_imx_sdma_data __initconst =
+        imx_imx_sdma_data_entry_single(MX51, 2, "imx51", 0);
+#endif /* ifdef CONFIG_ARCH_MX51 */
+
+static struct platform_device __init __maybe_unused *imx_add_imx_sdma(
+                const struct imx_imx_sdma_data *data)
+{
+        struct resource res[] = {
+                {
+                        .start = data->iobase,
+                        .end = data->iobase + SZ_4K - 1,
+                        .flags = IORESOURCE_MEM,
+                }, {
+                        .start = data->irq,
+                        .end = data->irq,
+                        .flags = IORESOURCE_IRQ,
+                },
+        };
+
+        return imx_add_platform_device("imx-sdma", -1,
+                        res, ARRAY_SIZE(res),
+                        &data->pdata, sizeof(data->pdata));
+}
+
+static struct platform_device __init __maybe_unused *imx_add_imx_dma(void)
+{
+        return imx_add_platform_device("imx-dma", -1, NULL, 0, NULL, 0);
+}
+
+static int __init imxXX_add_imx_dma(void)
+{
+        struct platform_device *ret;
+
+#if defined(CONFIG_SOC_IMX21) || defined(CONFIG_SOC_IMX27)
+        if (cpu_is_mx21() || cpu_is_mx27())
+                ret = imx_add_imx_dma();
+        else
+#endif
+
+#if defined(CONFIG_ARCH_MX25)
+        if (cpu_is_mx25())
+                ret = imx_add_imx_sdma(&imx25_imx_sdma_data);
+        else
+#endif
+
+#if defined(CONFIG_ARCH_MX31)
+        if (cpu_is_mx31()) {
+                imx31_imx_sdma_data.pdata.to_version = mx31_revision() >> 4;
+                ret = imx_add_imx_sdma(&imx31_imx_sdma_data);
+        } else
+#endif
+
+#if defined(CONFIG_ARCH_MX35)
+        if (cpu_is_mx35()) {
+                imx35_imx_sdma_data.pdata.to_version = mx35_revision() >> 4;
+                ret = imx_add_imx_sdma(&imx35_imx_sdma_data);
+        } else
+#endif
+
+#if defined(CONFIG_ARCH_MX51)
+        if (cpu_is_mx51())
+                ret = imx_add_imx_sdma(&imx51_imx_sdma_data);
+        else
+#endif
+                ret = ERR_PTR(-ENODEV);
+
+        if (IS_ERR(ret))
+                return PTR_ERR(ret);
+
+        return 0;
+}
+arch_initcall(imxXX_add_imx_dma);