s5p-dev-mfc.rar_MFC

/* * 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; }