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bcf8b616de
Add support to convert from XR24 to reversed monochrome for drivers that control monochromatic display panels, that only have 1 bit per pixel. The function does a line-by-line conversion doing an intermediate step first from XR24 to 8-bit grayscale and then to reversed monochrome. The drm_fb_gray8_to_mono_reversed_line() helper was based on code from drivers/gpu/drm/tiny/repaper.c driver. Signed-off-by: Javier Martinez Canillas <javierm@redhat.com> Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Maxime Ripard <maxime@cerno.tech> Link: https://patchwork.freedesktop.org/patch/msgid/20220214133710.3278506-3-javierm@redhat.com
50 lines
2.3 KiB
C
50 lines
2.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Copyright (C) 2016 Noralf Trønnes
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*/
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#ifndef __LINUX_DRM_FORMAT_HELPER_H
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#define __LINUX_DRM_FORMAT_HELPER_H
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struct drm_format_info;
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struct drm_framebuffer;
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struct drm_rect;
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unsigned int drm_fb_clip_offset(unsigned int pitch, const struct drm_format_info *format,
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const struct drm_rect *clip);
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void drm_fb_memcpy(void *dst, unsigned int dst_pitch, const void *vaddr,
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const struct drm_framebuffer *fb, const struct drm_rect *clip);
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void drm_fb_memcpy_toio(void __iomem *dst, unsigned int dst_pitch, const void *vaddr,
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const struct drm_framebuffer *fb, const struct drm_rect *clip);
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void drm_fb_swab(void *dst, unsigned int dst_pitch, const void *src,
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const struct drm_framebuffer *fb, const struct drm_rect *clip,
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bool cached);
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void drm_fb_xrgb8888_to_rgb332(void *dst, unsigned int dst_pitch, const void *vaddr,
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const struct drm_framebuffer *fb, const struct drm_rect *clip);
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void drm_fb_xrgb8888_to_rgb565(void *dst, unsigned int dst_pitch, const void *vaddr,
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const struct drm_framebuffer *fb, const struct drm_rect *clip,
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bool swab);
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void drm_fb_xrgb8888_to_rgb565_toio(void __iomem *dst, unsigned int dst_pitch,
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const void *vaddr, const struct drm_framebuffer *fb,
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const struct drm_rect *clip, bool swab);
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void drm_fb_xrgb8888_to_rgb888(void *dst, unsigned int dst_pitch, const void *src,
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const struct drm_framebuffer *fb, const struct drm_rect *clip);
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void drm_fb_xrgb8888_to_rgb888_toio(void __iomem *dst, unsigned int dst_pitch,
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const void *vaddr, const struct drm_framebuffer *fb,
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const struct drm_rect *clip);
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void drm_fb_xrgb8888_to_xrgb2101010_toio(void __iomem *dst, unsigned int dst_pitch,
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const void *vaddr, const struct drm_framebuffer *fb,
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const struct drm_rect *clip);
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void drm_fb_xrgb8888_to_gray8(void *dst, unsigned int dst_pitch, const void *vaddr,
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const struct drm_framebuffer *fb, const struct drm_rect *clip);
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int drm_fb_blit_toio(void __iomem *dst, unsigned int dst_pitch, uint32_t dst_format,
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const void *vmap, const struct drm_framebuffer *fb,
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const struct drm_rect *rect);
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void drm_fb_xrgb8888_to_mono_reversed(void *dst, unsigned int dst_pitch, const void *src,
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const struct drm_framebuffer *fb,
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const struct drm_rect *clip);
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#endif /* __LINUX_DRM_FORMAT_HELPER_H */
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