1/* 2 * Copyright (C) 2010-2011 Samsung Electronics Co.Ltd 3 * 4 * Base S5P MFC resource and device definitions 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License version 2 as 8 * published by the Free Software Foundation. 9 */ 10 11#include <linux/kernel.h> 12#include <linux/interrupt.h> 13#include <linux/platform_device.h> 14#include <linux/dma-mapping.h> 15#include <linux/memblock.h> 16#include <linux/ioport.h> 17#include <linux/of_fdt.h> 18#include <linux/of.h> 19 20static struct platform_device s5p_device_mfc_l; 21static struct platform_device s5p_device_mfc_r; 22 23struct s5p_mfc_dt_meminfo { 24 unsigned long loff; 25 unsigned long lsize; 26 unsigned long roff; 27 unsigned long rsize; 28 char *compatible; 29}; 30 31struct s5p_mfc_reserved_mem { 32 phys_addr_t base; 33 unsigned long size; 34 struct device *dev; 35}; 36 37static struct s5p_mfc_reserved_mem s5p_mfc_mem[2] __initdata; 38 39 40static void __init s5p_mfc_reserve_mem(phys_addr_t rbase, unsigned int rsize, 41 phys_addr_t lbase, unsigned int lsize) 42{ 43 int i; 44 45 s5p_mfc_mem[0].dev = &s5p_device_mfc_r.dev; 46 s5p_mfc_mem[0].base = rbase; 47 s5p_mfc_mem[0].size = rsize; 48 49 s5p_mfc_mem[1].dev = &s5p_device_mfc_l.dev; 50 s5p_mfc_mem[1].base = lbase; 51 s5p_mfc_mem[1].size = lsize; 52 53 for (i = 0; i < ARRAY_SIZE(s5p_mfc_mem); i++) { 54 struct s5p_mfc_reserved_mem *area = &s5p_mfc_mem[i]; 55 if (memblock_remove(area->base, area->size)) { 56 printk(KERN_ERR "Failed to reserve memory for MFC device (%ld bytes at 0x%08lx)\n", 57 area->size, (unsigned long) area->base); 58 area->base = 0; 59 } 60 } 61} 62 63int __init s5p_fdt_alloc_mfc_mem(unsigned long node, const char *uname, 64 int depth, void *data) 65{ 66 const __be32 *prop; 67 int len; 68 struct s5p_mfc_dt_meminfo mfc_mem; 69 70 if (!data) 71 return 0; 72 73 if (!of_flat_dt_is_compatible(node, data)) 74 return 0; 75 76 prop = of_get_flat_dt_prop(node, "samsung,mfc-l", &len); 77 if (!prop || (len != 2 * sizeof(unsigned long))) 78 return 0; 79 80 mfc_mem.loff = be32_to_cpu(prop[0]); 81 mfc_mem.lsize = be32_to_cpu(prop[1]); 82 83 prop = of_get_flat_dt_prop(node, "samsung,mfc-r", &len); 84 if (!prop || (len != 2 * sizeof(unsigned long))) 85 return 0; 86 87 mfc_mem.roff = be32_to_cpu(prop[0]); 88 mfc_mem.rsize = be32_to_cpu(prop[1]); 89 90 s5p_mfc_reserve_mem(mfc_mem.roff, mfc_mem.rsize, 91 mfc_mem.loff, mfc_mem.lsize); 92 93 return 1; 94} 95