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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187// SPDX-License-Identifier: GPL-2.0 or MIT/* * Copyright (c) 2023 Red Hat. * Author: Jocelyn Falempe <jfalempe@redhat.com> */
#include <linux/bits.h>#include <linux/bug.h>#include <linux/export.h>#include <linux/iosys-map.h>#include <linux/types.h>
#include <drm/drm_fourcc.h>
#include "drm_draw_internal.h"#include "drm_format_internal.h"
/** * drm_draw_can_convert_from_xrgb8888 - check if xrgb8888 can be converted to the desired format * @format: format * * Returns: * True if XRGB8888 can be converted to the specified format, false otherwise. */bool drm_draw_can_convert_from_xrgb8888(u32 format){ switch (format) { case DRM_FORMAT_RGB565: case DRM_FORMAT_RGBA5551: case DRM_FORMAT_XRGB1555: case DRM_FORMAT_ARGB1555: case DRM_FORMAT_RGB888: case DRM_FORMAT_XRGB8888: case DRM_FORMAT_ARGB8888: case DRM_FORMAT_XBGR8888: case DRM_FORMAT_ABGR8888: case DRM_FORMAT_XRGB2101010: case DRM_FORMAT_ARGB2101010: case DRM_FORMAT_ABGR2101010: return true; default: return false; }}EXPORT_SYMBOL(drm_draw_can_convert_from_xrgb8888);
/** * drm_draw_color_from_xrgb8888 - convert one pixel from xrgb8888 to the desired format * @color: input color, in xrgb8888 format * @format: output format * * Returns: * Color in the format specified, casted to u32. * Or 0 if the format is not supported. */u32 drm_draw_color_from_xrgb8888(u32 color, u32 format){ switch (format) { case DRM_FORMAT_RGB565: return drm_pixel_xrgb8888_to_rgb565(color); case DRM_FORMAT_RGBA5551: return drm_pixel_xrgb8888_to_rgba5551(color); case DRM_FORMAT_XRGB1555: return drm_pixel_xrgb8888_to_xrgb1555(color); case DRM_FORMAT_ARGB1555: return drm_pixel_xrgb8888_to_argb1555(color); case DRM_FORMAT_RGB888: case DRM_FORMAT_XRGB8888: return color; case DRM_FORMAT_ARGB8888: return drm_pixel_xrgb8888_to_argb8888(color); case DRM_FORMAT_XBGR8888: return drm_pixel_xrgb8888_to_xbgr8888(color); case DRM_FORMAT_ABGR8888: return drm_pixel_xrgb8888_to_abgr8888(color); case DRM_FORMAT_XRGB2101010: return drm_pixel_xrgb8888_to_xrgb2101010(color); case DRM_FORMAT_ARGB2101010: return drm_pixel_xrgb8888_to_argb2101010(color); case DRM_FORMAT_ABGR2101010: return drm_pixel_xrgb8888_to_abgr2101010(color); default: WARN_ONCE(1, "Can't convert to %p4cc\n", &format); return 0; }}EXPORT_SYMBOL(drm_draw_color_from_xrgb8888);
/* * Blit functions */void drm_draw_blit16(struct iosys_map *dmap, unsigned int dpitch, const u8 *sbuf8, unsigned int spitch, unsigned int height, unsigned int width, unsigned int scale, u16 fg16){ unsigned int y, x;
for (y = 0; y < height; y++) for (x = 0; x < width; x++) if (drm_draw_is_pixel_fg(sbuf8, spitch, x / scale, y / scale)) iosys_map_wr(dmap, y * dpitch + x * sizeof(u16), u16, fg16);}EXPORT_SYMBOL(drm_draw_blit16);
void drm_draw_blit24(struct iosys_map *dmap, unsigned int dpitch, const u8 *sbuf8, unsigned int spitch, unsigned int height, unsigned int width, unsigned int scale, u32 fg32){ unsigned int y, x;
for (y = 0; y < height; y++) { for (x = 0; x < width; x++) { u32 off = y * dpitch + x * 3;
if (drm_draw_is_pixel_fg(sbuf8, spitch, x / scale, y / scale)) { /* write blue-green-red to output in little endianness */ iosys_map_wr(dmap, off, u8, (fg32 & 0x000000FF) >> 0); iosys_map_wr(dmap, off + 1, u8, (fg32 & 0x0000FF00) >> 8); iosys_map_wr(dmap, off + 2, u8, (fg32 & 0x00FF0000) >> 16); } } }}EXPORT_SYMBOL(drm_draw_blit24);
void drm_draw_blit32(struct iosys_map *dmap, unsigned int dpitch, const u8 *sbuf8, unsigned int spitch, unsigned int height, unsigned int width, unsigned int scale, u32 fg32){ unsigned int y, x;
for (y = 0; y < height; y++) for (x = 0; x < width; x++) if (drm_draw_is_pixel_fg(sbuf8, spitch, x / scale, y / scale)) iosys_map_wr(dmap, y * dpitch + x * sizeof(u32), u32, fg32);}EXPORT_SYMBOL(drm_draw_blit32);
/* * Fill functions */void drm_draw_fill16(struct iosys_map *dmap, unsigned int dpitch, unsigned int height, unsigned int width, u16 color){ unsigned int y, x;
for (y = 0; y < height; y++) for (x = 0; x < width; x++) iosys_map_wr(dmap, y * dpitch + x * sizeof(u16), u16, color);}EXPORT_SYMBOL(drm_draw_fill16);
void drm_draw_fill24(struct iosys_map *dmap, unsigned int dpitch, unsigned int height, unsigned int width, u32 color){ unsigned int y, x;
for (y = 0; y < height; y++) { for (x = 0; x < width; x++) { unsigned int off = y * dpitch + x * 3;
/* write blue-green-red to output in little endianness */ iosys_map_wr(dmap, off, u8, (color & 0x000000FF) >> 0); iosys_map_wr(dmap, off + 1, u8, (color & 0x0000FF00) >> 8); iosys_map_wr(dmap, off + 2, u8, (color & 0x00FF0000) >> 16); } }}EXPORT_SYMBOL(drm_draw_fill24);
void drm_draw_fill32(struct iosys_map *dmap, unsigned int dpitch, unsigned int height, unsigned int width, u32 color){ unsigned int y, x;
for (y = 0; y < height; y++) for (x = 0; x < width; x++) iosys_map_wr(dmap, y * dpitch + x * sizeof(u32), u32, color);}EXPORT_SYMBOL(drm_draw_fill32);