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-rw-r--r--arch/arm/plat-mxc/devices/platform-imx-dma.c129
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);
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