projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| d9c452f4 | 1 | /* |
| 0f75a96b KD |
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 | ||
| 0f75a96b KD |
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> | |
| 2eae613b AK |
17 | #include <linux/of_fdt.h> |
| 18 | #include <linux/of.h> | |
| 0f75a96b | 19 | |
| 07fbe13d TF |
20 | #include <plat/mfc.h> |
| 21 | ||
| 22 | #ifdef CONFIG_SAMSUNG_ATAGS | |
| 0f75a96b | 23 | #include <mach/map.h> |
| f76da510 | 24 | #include <mach/irqs.h> |
| 0f75a96b | 25 | #include <plat/devs.h> |
| 0f75a96b | 26 | |
| f76da510 AB |
27 | static struct resource s5p_mfc_resource[] = { |
| 28 | [0] = DEFINE_RES_MEM(S5P_PA_MFC, SZ_64K), | |
| 29 | [1] = DEFINE_RES_IRQ(IRQ_MFC), | |
| 30 | }; | |
| 31 | ||
| 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, | |
| 37 | }; | |
| 38 | ||
| 39 | /* | |
| 40 | * MFC hardware has 2 memory interfaces which are modelled as two separate | |
| 41 | * platform devices to let dma-mapping distinguish between them. | |
| 42 | * | |
| 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). | |
| 45 | */ | |
| 46 | ||
| 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), | |
| 54 | }, | |
| 55 | }; | |
| 56 | ||
| 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), | |
| 64 | }, | |
| 65 | }; | |
| 07fbe13d TF |
66 | #else |
| 67 | static struct platform_device s5p_device_mfc_l; | |
| 68 | static struct platform_device s5p_device_mfc_r; | |
| 69 | #endif | |
| f76da510 | 70 | |
| 0f75a96b KD |
71 | struct s5p_mfc_reserved_mem { |
| 72 | phys_addr_t base; | |
| 73 | unsigned long size; | |
| 74 | struct device *dev; | |
| 75 | }; | |
| 76 | ||
| 77 | static struct s5p_mfc_reserved_mem s5p_mfc_mem[2] __initdata; | |
| 78 | ||
| 07fbe13d | 79 | |
| 0f75a96b KD |
80 | void __init s5p_mfc_reserve_mem(phys_addr_t rbase, unsigned int rsize, |
| 81 | phys_addr_t lbase, unsigned int lsize) | |
| 82 | { | |
| 83 | int i; | |
| 84 | ||
| 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; | |
| 88 | ||
| 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; | |
| 92 | ||
| 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; | |
| 99 | } | |
| 100 | } | |
| 101 | } | |
| 102 | ||
| 07fbe13d | 103 | #ifdef CONFIG_SAMSUNG_ATAGS |
| 0f75a96b KD |
104 | static int __init s5p_mfc_memory_init(void) |
| 105 | { | |
| 106 | int i; | |
| 107 | ||
| 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; | |
| 112 | ||
| 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); | |
| 118 | } | |
| 119 | return 0; | |
| 120 | } | |
| 121 | device_initcall(s5p_mfc_memory_init); | |
| 07fbe13d | 122 | #endif |
| 2eae613b AK |
123 | |
| 124 | #ifdef CONFIG_OF | |
| 125 | int __init s5p_fdt_find_mfc_mem(unsigned long node, const char *uname, | |
| 126 | int depth, void *data) | |
| 127 | { | |
| 128 | __be32 *prop; | |
| 129 | unsigned long len; | |
| 130 | struct s5p_mfc_dt_meminfo *mfc_mem = data; | |
| 131 | ||
| 132 | if (!data) | |
| 133 | return 0; | |
| 134 | ||
| 135 | if (!of_flat_dt_is_compatible(node, mfc_mem->compatible)) | |
| 136 | return 0; | |
| 137 | ||
| 138 | prop = of_get_flat_dt_prop(node, "samsung,mfc-l", &len); | |
| 139 | if (!prop || (len != 2 * sizeof(unsigned long))) | |
| 140 | return 0; | |
| 141 | ||
| 142 | mfc_mem->loff = be32_to_cpu(prop[0]); | |
| 143 | mfc_mem->lsize = be32_to_cpu(prop[1]); | |
| 144 | ||
| 145 | prop = of_get_flat_dt_prop(node, "samsung,mfc-r", &len); | |
| 146 | if (!prop || (len != 2 * sizeof(unsigned long))) | |
| 147 | return 0; | |
| 148 | ||
| 149 | mfc_mem->roff = be32_to_cpu(prop[0]); | |
| 150 | mfc_mem->rsize = be32_to_cpu(prop[1]); | |
| 151 | ||
| 152 | return 1; | |
| 153 | } | |
| 154 | #endif |