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Diffstat (limited to 'arch/arm/plat-samsung/s5p-dev-mfc.c')
-rw-r--r--arch/arm/plat-samsung/s5p-dev-mfc.c71
1 files changed, 71 insertions, 0 deletions
diff --git a/arch/arm/plat-samsung/s5p-dev-mfc.c b/arch/arm/plat-samsung/s5p-dev-mfc.c
new file mode 100644
index 0000000..ad60894
--- /dev/null
+++ b/arch/arm/plat-samsung/s5p-dev-mfc.c
@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) 2010-2011 Samsung Electronics Co.Ltd
+ *
+ * Base S5P MFC resource and device definitions
+ *
+ * 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/kernel.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
+#include <linux/memblock.h>
+#include <linux/ioport.h>
+
+#include <mach/map.h>
+#include <plat/devs.h>
+#include <plat/irqs.h>
+#include <plat/mfc.h>
+
+struct s5p_mfc_reserved_mem {
+ phys_addr_t base;
+ unsigned long size;
+ struct device *dev;
+};
+
+static struct s5p_mfc_reserved_mem s5p_mfc_mem[2] __initdata;
+
+void __init s5p_mfc_reserve_mem(phys_addr_t rbase, unsigned int rsize,
+ phys_addr_t lbase, unsigned int lsize)
+{
+ int i;
+
+ s5p_mfc_mem[0].dev = &s5p_device_mfc_r.dev;
+ s5p_mfc_mem[0].base = rbase;
+ s5p_mfc_mem[0].size = rsize;
+
+ s5p_mfc_mem[1].dev = &s5p_device_mfc_l.dev;
+ s5p_mfc_mem[1].base = lbase;
+ s5p_mfc_mem[1].size = lsize;
+
+ for (i = 0; i < ARRAY_SIZE(s5p_mfc_mem); i++) {
+ struct s5p_mfc_reserved_mem *area = &s5p_mfc_mem[i];
+ if (memblock_remove(area->base, area->size)) {
+ printk(KERN_ERR "Failed to reserve memory for MFC device (%ld bytes at 0x%08lx)\n",
+ area->size, (unsigned long) area->base);
+ area->base = 0;
+ }
+ }
+}
+
+static int __init s5p_mfc_memory_init(void)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(s5p_mfc_mem); i++) {
+ struct s5p_mfc_reserved_mem *area = &s5p_mfc_mem[i];
+ if (!area->base)
+ continue;
+
+ if (dma_declare_coherent_memory(area->dev, area->base,
+ area->base, area->size,
+ DMA_MEMORY_MAP | DMA_MEMORY_EXCLUSIVE) == 0)
+ printk(KERN_ERR "Failed to declare coherent memory for MFC device (%ld bytes at 0x%08lx)\n",
+ area->size, (unsigned long) area->base);
+ }
+ return 0;
+}
+device_initcall(s5p_mfc_memory_init);