1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * Copyright (C) 2016 Noralf Trønnes
6 #ifndef __LINUX_DRM_FORMAT_HELPER_H
7 #define __LINUX_DRM_FORMAT_HELPER_H
9 #include <linux/types.h>
12 struct drm_format_info;
13 struct drm_framebuffer;
19 * struct drm_format_conv_state - Stores format-conversion state
21 * DRM helpers for format conversion store temporary state in
22 * struct drm_xfrm_buf. The buffer's resources can be reused
23 * among multiple conversion operations.
25 * All fields are considered private.
27 struct drm_format_conv_state {
35 #define __DRM_FORMAT_CONV_STATE_INIT(_mem, _size, _preallocated) { \
39 .preallocated = (_preallocated), \
44 * DRM_FORMAT_CONV_STATE_INIT - Initializer for struct drm_format_conv_state
46 * Initializes an instance of struct drm_format_conv_state to default values.
48 #define DRM_FORMAT_CONV_STATE_INIT \
49 __DRM_FORMAT_CONV_STATE_INIT(NULL, 0, false)
52 * DRM_FORMAT_CONV_STATE_INIT_PREALLOCATED - Initializer for struct drm_format_conv_state
53 * @_mem: The preallocated memory area
54 * @_size: The number of bytes in _mem
56 * Initializes an instance of struct drm_format_conv_state to preallocated
57 * storage. The caller is responsible for releasing the provided memory range.
59 #define DRM_FORMAT_CONV_STATE_INIT_PREALLOCATED(_mem, _size) \
60 __DRM_FORMAT_CONV_STATE_INIT(_mem, _size, true)
62 void drm_format_conv_state_init(struct drm_format_conv_state *state);
63 void drm_format_conv_state_copy(struct drm_format_conv_state *state,
64 const struct drm_format_conv_state *old_state);
65 void *drm_format_conv_state_reserve(struct drm_format_conv_state *state,
66 size_t new_size, gfp_t flags);
67 void drm_format_conv_state_release(struct drm_format_conv_state *state);
69 unsigned int drm_fb_clip_offset(unsigned int pitch, const struct drm_format_info *format,
70 const struct drm_rect *clip);
72 void drm_fb_memcpy(struct iosys_map *dst, const unsigned int *dst_pitch,
73 const struct iosys_map *src, const struct drm_framebuffer *fb,
74 const struct drm_rect *clip);
75 void drm_fb_swab(struct iosys_map *dst, const unsigned int *dst_pitch,
76 const struct iosys_map *src, const struct drm_framebuffer *fb,
77 const struct drm_rect *clip, bool cached,
78 struct drm_format_conv_state *state);
79 void drm_fb_xrgb8888_to_rgb332(struct iosys_map *dst, const unsigned int *dst_pitch,
80 const struct iosys_map *src, const struct drm_framebuffer *fb,
81 const struct drm_rect *clip, struct drm_format_conv_state *state);
82 void drm_fb_xrgb8888_to_rgb565(struct iosys_map *dst, const unsigned int *dst_pitch,
83 const struct iosys_map *src, const struct drm_framebuffer *fb,
84 const struct drm_rect *clip, struct drm_format_conv_state *state,
86 void drm_fb_xrgb8888_to_xrgb1555(struct iosys_map *dst, const unsigned int *dst_pitch,
87 const struct iosys_map *src, const struct drm_framebuffer *fb,
88 const struct drm_rect *clip, struct drm_format_conv_state *state);
89 void drm_fb_xrgb8888_to_argb1555(struct iosys_map *dst, const unsigned int *dst_pitch,
90 const struct iosys_map *src, const struct drm_framebuffer *fb,
91 const struct drm_rect *clip, struct drm_format_conv_state *state);
92 void drm_fb_xrgb8888_to_rgba5551(struct iosys_map *dst, const unsigned int *dst_pitch,
93 const struct iosys_map *src, const struct drm_framebuffer *fb,
94 const struct drm_rect *clip, struct drm_format_conv_state *state);
95 void drm_fb_xrgb8888_to_rgb888(struct iosys_map *dst, const unsigned int *dst_pitch,
96 const struct iosys_map *src, const struct drm_framebuffer *fb,
97 const struct drm_rect *clip, struct drm_format_conv_state *state);
98 void drm_fb_xrgb8888_to_argb8888(struct iosys_map *dst, const unsigned int *dst_pitch,
99 const struct iosys_map *src, const struct drm_framebuffer *fb,
100 const struct drm_rect *clip, struct drm_format_conv_state *state);
101 void drm_fb_xrgb8888_to_xrgb2101010(struct iosys_map *dst, const unsigned int *dst_pitch,
102 const struct iosys_map *src, const struct drm_framebuffer *fb,
103 const struct drm_rect *clip,
104 struct drm_format_conv_state *state);
105 void drm_fb_xrgb8888_to_argb2101010(struct iosys_map *dst, const unsigned int *dst_pitch,
106 const struct iosys_map *src, const struct drm_framebuffer *fb,
107 const struct drm_rect *clip,
108 struct drm_format_conv_state *state);
109 void drm_fb_xrgb8888_to_gray8(struct iosys_map *dst, const unsigned int *dst_pitch,
110 const struct iosys_map *src, const struct drm_framebuffer *fb,
111 const struct drm_rect *clip, struct drm_format_conv_state *state);
113 int drm_fb_blit(struct iosys_map *dst, const unsigned int *dst_pitch, uint32_t dst_format,
114 const struct iosys_map *src, const struct drm_framebuffer *fb,
115 const struct drm_rect *clip, struct drm_format_conv_state *state);
117 void drm_fb_xrgb8888_to_mono(struct iosys_map *dst, const unsigned int *dst_pitch,
118 const struct iosys_map *src, const struct drm_framebuffer *fb,
119 const struct drm_rect *clip, struct drm_format_conv_state *state);
121 size_t drm_fb_build_fourcc_list(struct drm_device *dev,
122 const u32 *native_fourccs, size_t native_nfourccs,
123 u32 *fourccs_out, size_t nfourccs_out);
125 #endif /* __LINUX_DRM_FORMAT_HELPER_H */