052ddf7b86
Rename the fbdev mmap helper fb_pgprotect() to pgprot_framebuffer(). The helper sets VMA page-access flags for framebuffers in device I/O memory. Also clean up the helper's parameters and return value. Instead of the VMA instance, pass the individial parameters separately: existing page-access flags, the VMAs start and end addresses and the offset in the underlying device memory rsp file. Return the new page-access flags. These changes align pgprot_framebuffer() with other pgprot_() functions. v4: * fix commit message (Christophe) v3: * rename fb_pgprotect() to pgprot_framebuffer() (Arnd) Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> # m68k Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230922080636.26762-3-tzimmermann@suse.de
38 lines
859 B
C
38 lines
859 B
C
#ifndef _ASM_FB_H_
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#define _ASM_FB_H_
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#include <asm/page.h>
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static inline pgprot_t pgprot_framebuffer(pgprot_t prot,
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unsigned long vm_start, unsigned long vm_end,
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unsigned long offset)
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{
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return pgprot_noncached(prot);
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}
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#define pgprot_framebuffer pgprot_framebuffer
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/*
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* MIPS doesn't define __raw_ I/O macros, so the helpers
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* in <asm-generic/fb.h> don't generate fb_readq() and
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* fb_write(). We have to provide them here.
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*
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* TODO: Convert MIPS to generic I/O. The helpers below can
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* then be removed.
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*/
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#ifdef CONFIG_64BIT
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static inline u64 fb_readq(const volatile void __iomem *addr)
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{
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return __raw_readq(addr);
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}
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#define fb_readq fb_readq
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static inline void fb_writeq(u64 b, volatile void __iomem *addr)
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{
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__raw_writeq(b, addr);
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}
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#define fb_writeq fb_writeq
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#endif
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#include <asm-generic/fb.h>
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#endif /* _ASM_FB_H_ */
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