1/* SPDX-License-Identifier: GPL-2.0 */
 
 2#ifndef __ASM_GENERIC_FB_H_
 3#define __ASM_GENERIC_FB_H_
 4#include <linux/fb.h>
 5
 6#define fb_pgprotect(...) do {} while (0)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 7
 
 
 8static inline int fb_is_primary_device(struct fb_info *info)
 9{
10	return 0;
11}
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
12
13#endif /* __ASM_GENERIC_FB_H_ */

  1/* SPDX-License-Identifier: GPL-2.0 */
  2
  3#ifndef __ASM_GENERIC_FB_H_
  4#define __ASM_GENERIC_FB_H_
 
  5
  6/*
  7 * Only include this header file from your architecture's <asm/fb.h>.
  8 */
  9
 10#include <linux/io.h>
 11#include <linux/mm_types.h>
 12#include <linux/pgtable.h>
 13
 14struct fb_info;
 15
 16#ifndef pgprot_framebuffer
 17#define pgprot_framebuffer pgprot_framebuffer
 18static inline pgprot_t pgprot_framebuffer(pgprot_t prot,
 19					  unsigned long vm_start, unsigned long vm_end,
 20					  unsigned long offset)
 21{
 22	return pgprot_writecombine(prot);
 23}
 24#endif
 25
 26#ifndef fb_is_primary_device
 27#define fb_is_primary_device fb_is_primary_device
 28static inline int fb_is_primary_device(struct fb_info *info)
 29{
 30	return 0;
 31}
 32#endif
 33
 34/*
 35 * I/O helpers for the framebuffer. Prefer these functions over their
 36 * regular counterparts. The regular I/O functions provide in-order
 37 * access and swap bytes to/from little-endian ordering. Neither is
 38 * required for framebuffers. Instead, the helpers read and write
 39 * raw framebuffer data. Independent operations can be reordered for
 40 * improved performance.
 41 */
 42
 43#ifndef fb_readb
 44static inline u8 fb_readb(const volatile void __iomem *addr)
 45{
 46	return __raw_readb(addr);
 47}
 48#define fb_readb fb_readb
 49#endif
 50
 51#ifndef fb_readw
 52static inline u16 fb_readw(const volatile void __iomem *addr)
 53{
 54	return __raw_readw(addr);
 55}
 56#define fb_readw fb_readw
 57#endif
 58
 59#ifndef fb_readl
 60static inline u32 fb_readl(const volatile void __iomem *addr)
 61{
 62	return __raw_readl(addr);
 63}
 64#define fb_readl fb_readl
 65#endif
 66
 67#ifndef fb_readq
 68#if defined(__raw_readq)
 69static inline u64 fb_readq(const volatile void __iomem *addr)
 70{
 71	return __raw_readq(addr);
 72}
 73#define fb_readq fb_readq
 74#endif
 75#endif
 76
 77#ifndef fb_writeb
 78static inline void fb_writeb(u8 b, volatile void __iomem *addr)
 79{
 80	__raw_writeb(b, addr);
 81}
 82#define fb_writeb fb_writeb
 83#endif
 84
 85#ifndef fb_writew
 86static inline void fb_writew(u16 b, volatile void __iomem *addr)
 87{
 88	__raw_writew(b, addr);
 89}
 90#define fb_writew fb_writew
 91#endif
 92
 93#ifndef fb_writel
 94static inline void fb_writel(u32 b, volatile void __iomem *addr)
 95{
 96	__raw_writel(b, addr);
 97}
 98#define fb_writel fb_writel
 99#endif
100
101#ifndef fb_writeq
102#if defined(__raw_writeq)
103static inline void fb_writeq(u64 b, volatile void __iomem *addr)
104{
105	__raw_writeq(b, addr);
106}
107#define fb_writeq fb_writeq
108#endif
109#endif
110
111#ifndef fb_memcpy_fromio
112static inline void fb_memcpy_fromio(void *to, const volatile void __iomem *from, size_t n)
113{
114	memcpy_fromio(to, from, n);
115}
116#define fb_memcpy_fromio fb_memcpy_fromio
117#endif
118
119#ifndef fb_memcpy_toio
120static inline void fb_memcpy_toio(volatile void __iomem *to, const void *from, size_t n)
121{
122	memcpy_toio(to, from, n);
123}
124#define fb_memcpy_toio fb_memcpy_toio
125#endif
126
127#ifndef fb_memset
128static inline void fb_memset_io(volatile void __iomem *addr, int c, size_t n)
129{
130	memset_io(addr, c, n);
131}
132#define fb_memset fb_memset_io
133#endif
134
135#endif /* __ASM_GENERIC_FB_H_ */