Linux-libre 4.3.2-gnu

1 files changed, 94 insertions, 0 deletions

diff --git a/arch/arm/mach-exynos/s5p-dev-mfc.c b/arch/arm/mach-exynos/s5p-dev-mfc.c
new file mode 100644
index 000000000..0b04b6b0f
--- /dev/null
+++ b/arch/arm/mach-exynos/s5p-dev-mfc.c
@@ -0,0 +1,94 @@
+/*
+ * 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 <linux/of_fdt.h>
+#include <linux/of.h>
+
+static struct platform_device s5p_device_mfc_l;
+static struct platform_device s5p_device_mfc_r;
+
+struct s5p_mfc_dt_meminfo {
+	unsigned long	loff;
+	unsigned long	lsize;
+	unsigned long	roff;
+	unsigned long	rsize;
+	char		*compatible;
+};
+
+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;
+
+
+static 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;
+		}
+	}
+}
+
+int __init s5p_fdt_alloc_mfc_mem(unsigned long node, const char *uname,
+				int depth, void *data)
+{
+	const __be32 *prop;
+	int len;
+	struct s5p_mfc_dt_meminfo mfc_mem;
+
+	if (!data)
+		return 0;
+
+	if (!of_flat_dt_is_compatible(node, data))
+		return 0;
+
+	prop = of_get_flat_dt_prop(node, "samsung,mfc-l", &len);
+	if (!prop || (len != 2 * sizeof(unsigned long)))
+		return 0;
+
+	mfc_mem.loff = be32_to_cpu(prop[0]);
+	mfc_mem.lsize = be32_to_cpu(prop[1]);
+
+	prop = of_get_flat_dt_prop(node, "samsung,mfc-r", &len);
+	if (!prop || (len != 2 * sizeof(unsigned long)))
+		return 0;
+
+	mfc_mem.roff = be32_to_cpu(prop[0]);
+	mfc_mem.rsize = be32_to_cpu(prop[1]);
+
+	s5p_mfc_reserve_mem(mfc_mem.roff, mfc_mem.rsize,
+			mfc_mem.loff, mfc_mem.lsize);
+
+	return 1;
+}