x86/efi: Enforce CONFIG_RELOCATABLE for EFI boot stub
[linux/fpc-iii.git] / arch / arm / plat-samsung / s5p-dev-mfc.c
blobad51f85fbd018019b89e675927f75459553a6179
1 /*
2 * Copyright (C) 2010-2011 Samsung Electronics Co.Ltd
4 * Base S5P MFC resource and device definitions
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 */
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>
20 #include <plat/mfc.h>
22 #ifdef CONFIG_SAMSUNG_ATAGS
23 #include <mach/map.h>
24 #include <mach/irqs.h>
25 #include <plat/devs.h>
27 static struct resource s5p_mfc_resource[] = {
28 [0] = DEFINE_RES_MEM(S5P_PA_MFC, SZ_64K),
29 [1] = DEFINE_RES_IRQ(IRQ_MFC),
32 struct platform_device s5p_device_mfc = {
33 .name = "s5p-mfc",
34 .id = -1,
35 .num_resources = ARRAY_SIZE(s5p_mfc_resource),
36 .resource = s5p_mfc_resource,
40 * MFC hardware has 2 memory interfaces which are modelled as two separate
41 * platform devices to let dma-mapping distinguish between them.
43 * MFC parent device (s5p_device_mfc) must be registered before memory
44 * interface specific devices (s5p_device_mfc_l and s5p_device_mfc_r).
47 struct platform_device s5p_device_mfc_l = {
48 .name = "s5p-mfc-l",
49 .id = -1,
50 .dev = {
51 .parent = &s5p_device_mfc.dev,
52 .dma_mask = &s5p_device_mfc_l.dev.coherent_dma_mask,
53 .coherent_dma_mask = DMA_BIT_MASK(32),
57 struct platform_device s5p_device_mfc_r = {
58 .name = "s5p-mfc-r",
59 .id = -1,
60 .dev = {
61 .parent = &s5p_device_mfc.dev,
62 .dma_mask = &s5p_device_mfc_r.dev.coherent_dma_mask,
63 .coherent_dma_mask = DMA_BIT_MASK(32),
66 #else
67 static struct platform_device s5p_device_mfc_l;
68 static struct platform_device s5p_device_mfc_r;
69 #endif
71 struct s5p_mfc_reserved_mem {
72 phys_addr_t base;
73 unsigned long size;
74 struct device *dev;
77 static struct s5p_mfc_reserved_mem s5p_mfc_mem[2] __initdata;
80 void __init s5p_mfc_reserve_mem(phys_addr_t rbase, unsigned int rsize,
81 phys_addr_t lbase, unsigned int lsize)
83 int i;
85 s5p_mfc_mem[0].dev = &s5p_device_mfc_r.dev;
86 s5p_mfc_mem[0].base = rbase;
87 s5p_mfc_mem[0].size = rsize;
89 s5p_mfc_mem[1].dev = &s5p_device_mfc_l.dev;
90 s5p_mfc_mem[1].base = lbase;
91 s5p_mfc_mem[1].size = lsize;
93 for (i = 0; i < ARRAY_SIZE(s5p_mfc_mem); i++) {
94 struct s5p_mfc_reserved_mem *area = &s5p_mfc_mem[i];
95 if (memblock_remove(area->base, area->size)) {
96 printk(KERN_ERR "Failed to reserve memory for MFC device (%ld bytes at 0x%08lx)\n",
97 area->size, (unsigned long) area->base);
98 area->base = 0;
103 #ifdef CONFIG_SAMSUNG_ATAGS
104 static int __init s5p_mfc_memory_init(void)
106 int i;
108 for (i = 0; i < ARRAY_SIZE(s5p_mfc_mem); i++) {
109 struct s5p_mfc_reserved_mem *area = &s5p_mfc_mem[i];
110 if (!area->base)
111 continue;
113 if (dma_declare_coherent_memory(area->dev, area->base,
114 area->base, area->size,
115 DMA_MEMORY_MAP | DMA_MEMORY_EXCLUSIVE) == 0)
116 printk(KERN_ERR "Failed to declare coherent memory for MFC device (%ld bytes at 0x%08lx)\n",
117 area->size, (unsigned long) area->base);
119 return 0;
121 device_initcall(s5p_mfc_memory_init);
122 #endif
124 #ifdef CONFIG_OF
125 int __init s5p_fdt_find_mfc_mem(unsigned long node, const char *uname,
126 int depth, void *data)
128 __be32 *prop;
129 unsigned long len;
130 struct s5p_mfc_dt_meminfo *mfc_mem = data;
132 if (!data)
133 return 0;
135 if (!of_flat_dt_is_compatible(node, mfc_mem->compatible))
136 return 0;
138 prop = of_get_flat_dt_prop(node, "samsung,mfc-l", &len);
139 if (!prop || (len != 2 * sizeof(unsigned long)))
140 return 0;
142 mfc_mem->loff = be32_to_cpu(prop[0]);
143 mfc_mem->lsize = be32_to_cpu(prop[1]);
145 prop = of_get_flat_dt_prop(node, "samsung,mfc-r", &len);
146 if (!prop || (len != 2 * sizeof(unsigned long)))
147 return 0;
149 mfc_mem->roff = be32_to_cpu(prop[0]);
150 mfc_mem->rsize = be32_to_cpu(prop[1]);
152 return 1;
154 #endif