| 1 |
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| 2 |
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| 3 | #ifndef __ASM_GENERIC_VIDEO_H_
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| 4 | #define __ASM_GENERIC_VIDEO_H_
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| 5 |
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| 6 | |
| 7 | * Only include this header file from your architecture's <asm/fb.h>.
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| 8 |
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| 9 |
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| 10 | #include <linux/io.h>
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| 11 | #include <linux/mm_types.h>
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| 12 | #include <linux/pgtable.h>
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| 13 | #include <linux/types.h>
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| 14 |
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| 15 | struct device;
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| 16 |
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| 17 | #ifndef pgprot_framebuffer
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| 18 | #define pgprot_framebuffer pgprot_framebuffer
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| 19 | static inline pgprot_t pgprot_framebuffer(pgprot_t prot,
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| 20 | unsigned long vm_start, unsigned long vm_end,
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| 21 | unsigned long offset)
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| 22 | {
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| 23 | return pgprot_writecombine(prot);
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| 24 | }
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| 25 | #endif
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| 26 |
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| 27 | #ifndef video_is_primary_device
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| 28 | #define video_is_primary_device video_is_primary_device
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| 29 | static inline bool video_is_primary_device(struct device *dev)
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| 30 | {
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| 31 | return false;
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| 32 | }
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| 33 | #endif
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| 34 |
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| 35 | |
| 36 | * I/O helpers for the framebuffer. Prefer these functions over their
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| 37 | * regular counterparts. The regular I/O functions provide in-order
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| 38 | * access and swap bytes to/from little-endian ordering. Neither is
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| 39 | * required for framebuffers. Instead, the helpers read and write
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| 40 | * raw framebuffer data. Independent operations can be reordered for
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| 41 | * improved performance.
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| 42 |
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| 43 |
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| 44 | #ifndef fb_readb
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| 45 | static inline u8 fb_readb(const volatile void __iomem *addr)
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| 46 | {
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| 47 | return __raw_readb(addr);
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| 48 | }
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| 49 | #define fb_readb fb_readb
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| 50 | #endif
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| 51 |
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| 52 | #ifndef fb_readw
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| 53 | static inline u16 fb_readw(const volatile void __iomem *addr)
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| 54 | {
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| 55 | return __raw_readw(addr);
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| 56 | }
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| 57 | #define fb_readw fb_readw
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| 58 | #endif
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| 59 |
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| 60 | #ifndef fb_readl
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| 61 | static inline u32 fb_readl(const volatile void __iomem *addr)
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| 62 | {
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| 63 | return __raw_readl(addr);
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| 64 | }
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| 65 | #define fb_readl fb_readl
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| 66 | #endif
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| 67 |
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| 68 | #ifndef fb_readq
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| 69 | #if defined(__raw_readq)
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| 70 | static inline u64 fb_readq(const volatile void __iomem *addr)
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| 71 | {
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| 72 | return __raw_readq(addr);
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| 73 | }
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| 74 | #define fb_readq fb_readq
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| 75 | #endif
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| 76 | #endif
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| 77 |
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| 78 | #ifndef fb_writeb
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| 79 | static inline void fb_writeb(u8 b, volatile void __iomem *addr)
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| 80 | {
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| 81 | __raw_writeb(b, addr);
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| 82 | }
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| 83 | #define fb_writeb fb_writeb
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| 84 | #endif
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| 85 |
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| 86 | #ifndef fb_writew
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| 87 | static inline void fb_writew(u16 b, volatile void __iomem *addr)
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| 88 | {
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| 89 | __raw_writew(b, addr);
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| 90 | }
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| 91 | #define fb_writew fb_writew
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| 92 | #endif
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| 93 |
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| 94 | #ifndef fb_writel
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| 95 | static inline void fb_writel(u32 b, volatile void __iomem *addr)
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| 96 | {
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| 97 | __raw_writel(b, addr);
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| 98 | }
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| 99 | #define fb_writel fb_writel
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| 100 | #endif
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| 101 |
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| 102 | #ifndef fb_writeq
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| 103 | #if defined(__raw_writeq)
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| 104 | static inline void fb_writeq(u64 b, volatile void __iomem *addr)
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| 105 | {
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| 106 | __raw_writeq(b, addr);
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| 107 | }
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| 108 | #define fb_writeq fb_writeq
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| 109 | #endif
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| 110 | #endif
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| 111 |
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| 112 | #ifndef fb_memcpy_fromio
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| 113 | static inline void fb_memcpy_fromio(void *to, const volatile void __iomem *from, size_t n)
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| 114 | {
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| 115 | memcpy_fromio(to, from, n);
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| 116 | }
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| 117 | #define fb_memcpy_fromio fb_memcpy_fromio
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| 118 | #endif
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| 119 |
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| 120 | #ifndef fb_memcpy_toio
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| 121 | static inline void fb_memcpy_toio(volatile void __iomem *to, const void *from, size_t n)
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| 122 | {
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| 123 | memcpy_toio(to, from, n);
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| 124 | }
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| 125 | #define fb_memcpy_toio fb_memcpy_toio
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| 126 | #endif
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| 127 |
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| 128 | #ifndef fb_memset
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| 129 | static inline void fb_memset_io(volatile void __iomem *addr, int c, size_t n)
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| 130 | {
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| 131 | memset_io(addr, c, n);
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| 132 | }
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| 133 | #define fb_memset fb_memset_io
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| 134 | #endif
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| 135 |
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| 136 | #endif
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