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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2016 Noralf Trønnes
*/
#ifndef __LINUX_DRM_FORMAT_HELPER_H
#define __LINUX_DRM_FORMAT_HELPER_H
#include <linux/types.h>
struct drm_device;
struct drm_format_info;
struct drm_framebuffer;
struct drm_rect;
struct iosys_map;
/**
* struct drm_format_conv_state - Stores format-conversion state
*
* DRM helpers for format conversion store temporary state in
* struct drm_xfrm_buf. The buffer's resources can be reused
* among multiple conversion operations.
*
* All fields are considered private.
*/
struct drm_format_conv_state {
/* private: */
struct {
void *mem;
size_t size;
bool preallocated;
} tmp;
};
#define __DRM_FORMAT_CONV_STATE_INIT(_mem, _size, _preallocated) { \
.tmp = { \
.mem = (_mem), \
.size = (_size), \
.preallocated = (_preallocated), \
} \
}
/**
* DRM_FORMAT_CONV_STATE_INIT - Initializer for struct drm_format_conv_state
*
* Initializes an instance of struct drm_format_conv_state to default values.
*/
#define DRM_FORMAT_CONV_STATE_INIT \
__DRM_FORMAT_CONV_STATE_INIT(NULL, 0, false)
/**
* DRM_FORMAT_CONV_STATE_INIT_PREALLOCATED - Initializer for struct drm_format_conv_state
* @_mem: The preallocated memory area
* @_size: The number of bytes in _mem
*
* Initializes an instance of struct drm_format_conv_state to preallocated
* storage. The caller is responsible for releasing the provided memory range.
*/
#define DRM_FORMAT_CONV_STATE_INIT_PREALLOCATED(_mem, _size) \
__DRM_FORMAT_CONV_STATE_INIT(_mem, _size, true)
void drm_format_conv_state_init(struct drm_format_conv_state *state);
void drm_format_conv_state_copy(struct drm_format_conv_state *state,
const struct drm_format_conv_state *old_state);
void *drm_format_conv_state_reserve(struct drm_format_conv_state *state,
size_t new_size, gfp_t flags);
void drm_format_conv_state_release(struct drm_format_conv_state *state);
unsigned int drm_fb_clip_offset(unsigned int pitch, const struct drm_format_info *format,
const struct drm_rect *clip);
void drm_fb_memcpy(struct iosys_map *dst, const unsigned int *dst_pitch,
const struct iosys_map *src, const struct drm_framebuffer *fb,
const struct drm_rect *clip);
void drm_fb_swab(struct iosys_map *dst, const unsigned int *dst_pitch,
const struct iosys_map *src, const struct drm_framebuffer *fb,
const struct drm_rect *clip, bool cached,
struct drm_format_conv_state *state);
void drm_fb_xrgb8888_to_rgb332(struct iosys_map *dst, const unsigned int *dst_pitch,
const struct iosys_map *src, const struct drm_framebuffer *fb,
const struct drm_rect *clip, struct drm_format_conv_state *state);
void drm_fb_xrgb8888_to_rgb565(struct iosys_map *dst, const unsigned int *dst_pitch,
const struct iosys_map *src, const struct drm_framebuffer *fb,
const struct drm_rect *clip, struct drm_format_conv_state *state,
bool swab);
void drm_fb_xrgb8888_to_xrgb1555(struct iosys_map *dst, const unsigned int *dst_pitch,
const struct iosys_map *src, const struct drm_framebuffer *fb,
const struct drm_rect *clip, struct drm_format_conv_state *state);
void drm_fb_xrgb8888_to_argb1555(struct iosys_map *dst, const unsigned int *dst_pitch,
const struct iosys_map *src, const struct drm_framebuffer *fb,
const struct drm_rect *clip, struct drm_format_conv_state *state);
void drm_fb_xrgb8888_to_rgba5551(struct iosys_map *dst, const unsigned int *dst_pitch,
const struct iosys_map *src, const struct drm_framebuffer *fb,
const struct drm_rect *clip, struct drm_format_conv_state *state);
void drm_fb_xrgb8888_to_rgb888(struct iosys_map *dst, const unsigned int *dst_pitch,
const struct iosys_map *src, const struct drm_framebuffer *fb,
const struct drm_rect *clip, struct drm_format_conv_state *state);
void drm_fb_xrgb8888_to_argb8888(struct iosys_map *dst, const unsigned int *dst_pitch,
const struct iosys_map *src, const struct drm_framebuffer *fb,
const struct drm_rect *clip, struct drm_format_conv_state *state);
void drm_fb_xrgb8888_to_xrgb2101010(struct iosys_map *dst, const unsigned int *dst_pitch,
const struct iosys_map *src, const struct drm_framebuffer *fb,
const struct drm_rect *clip,
struct drm_format_conv_state *state);
void drm_fb_xrgb8888_to_argb2101010(struct iosys_map *dst, const unsigned int *dst_pitch,
const struct iosys_map *src, const struct drm_framebuffer *fb,
const struct drm_rect *clip,
struct drm_format_conv_state *state);
void drm_fb_xrgb8888_to_gray8(struct iosys_map *dst, const unsigned int *dst_pitch,
const struct iosys_map *src, const struct drm_framebuffer *fb,
const struct drm_rect *clip, struct drm_format_conv_state *state);
int drm_fb_blit(struct iosys_map *dst, const unsigned int *dst_pitch, uint32_t dst_format,
const struct iosys_map *src, const struct drm_framebuffer *fb,
const struct drm_rect *clip, struct drm_format_conv_state *state);
void drm_fb_xrgb8888_to_mono(struct iosys_map *dst, const unsigned int *dst_pitch,
const struct iosys_map *src, const struct drm_framebuffer *fb,
const struct drm_rect *clip, struct drm_format_conv_state *state);
size_t drm_fb_build_fourcc_list(struct drm_device *dev,
const u32 *native_fourccs, size_t native_nfourccs,
u32 *fourccs_out, size_t nfourccs_out);
#endif /* __LINUX_DRM_FORMAT_HELPER_H */
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