1ae4df11aSLaurent Pinchart /* 2ae4df11aSLaurent Pinchart * Copyright (c) 2016 Laurent Pinchart <laurent.pinchart@ideasonboard.com> 3ae4df11aSLaurent Pinchart * 4ae4df11aSLaurent Pinchart * Permission to use, copy, modify, distribute, and sell this software and its 5ae4df11aSLaurent Pinchart * documentation for any purpose is hereby granted without fee, provided that 6ae4df11aSLaurent Pinchart * the above copyright notice appear in all copies and that both that copyright 7ae4df11aSLaurent Pinchart * notice and this permission notice appear in supporting documentation, and 8ae4df11aSLaurent Pinchart * that the name of the copyright holders not be used in advertising or 9ae4df11aSLaurent Pinchart * publicity pertaining to distribution of the software without specific, 10ae4df11aSLaurent Pinchart * written prior permission. The copyright holders make no representations 11ae4df11aSLaurent Pinchart * about the suitability of this software for any purpose. It is provided "as 12ae4df11aSLaurent Pinchart * is" without express or implied warranty. 13ae4df11aSLaurent Pinchart * 14ae4df11aSLaurent Pinchart * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 15ae4df11aSLaurent Pinchart * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO 16ae4df11aSLaurent Pinchart * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR 17ae4df11aSLaurent Pinchart * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, 18ae4df11aSLaurent Pinchart * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER 19ae4df11aSLaurent Pinchart * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 20ae4df11aSLaurent Pinchart * OF THIS SOFTWARE. 21ae4df11aSLaurent Pinchart */ 22ae4df11aSLaurent Pinchart #ifndef __DRM_FOURCC_H__ 23ae4df11aSLaurent Pinchart #define __DRM_FOURCC_H__ 24ae4df11aSLaurent Pinchart 25ae4df11aSLaurent Pinchart #include <linux/types.h> 26ae4df11aSLaurent Pinchart #include <uapi/drm/drm_fourcc.h> 27ae4df11aSLaurent Pinchart 28ec2fae25SGerd Hoffmann /* 29ec2fae25SGerd Hoffmann * DRM formats are little endian. Define host endian variants for the 30ec2fae25SGerd Hoffmann * most common formats here, to reduce the #ifdefs needed in drivers. 31ec2fae25SGerd Hoffmann * 32ec2fae25SGerd Hoffmann * Note that the DRM_FORMAT_BIG_ENDIAN flag should only be used in 33ec2fae25SGerd Hoffmann * case the format can't be specified otherwise, so we don't end up 34ec2fae25SGerd Hoffmann * with two values describing the same format. 35ec2fae25SGerd Hoffmann */ 36ec2fae25SGerd Hoffmann #ifdef __BIG_ENDIAN 37ec2fae25SGerd Hoffmann # define DRM_FORMAT_HOST_XRGB1555 (DRM_FORMAT_XRGB1555 | \ 38ec2fae25SGerd Hoffmann DRM_FORMAT_BIG_ENDIAN) 39ec2fae25SGerd Hoffmann # define DRM_FORMAT_HOST_RGB565 (DRM_FORMAT_RGB565 | \ 40ec2fae25SGerd Hoffmann DRM_FORMAT_BIG_ENDIAN) 41ec2fae25SGerd Hoffmann # define DRM_FORMAT_HOST_XRGB8888 DRM_FORMAT_BGRX8888 42ec2fae25SGerd Hoffmann # define DRM_FORMAT_HOST_ARGB8888 DRM_FORMAT_BGRA8888 43ec2fae25SGerd Hoffmann #else 44ec2fae25SGerd Hoffmann # define DRM_FORMAT_HOST_XRGB1555 DRM_FORMAT_XRGB1555 45ec2fae25SGerd Hoffmann # define DRM_FORMAT_HOST_RGB565 DRM_FORMAT_RGB565 46ec2fae25SGerd Hoffmann # define DRM_FORMAT_HOST_XRGB8888 DRM_FORMAT_XRGB8888 47ec2fae25SGerd Hoffmann # define DRM_FORMAT_HOST_ARGB8888 DRM_FORMAT_ARGB8888 48ec2fae25SGerd Hoffmann #endif 49ec2fae25SGerd Hoffmann 506a0f9ebfSVille Syrjälä struct drm_device; 516a0f9ebfSVille Syrjälä struct drm_mode_fb_cmd2; 526a0f9ebfSVille Syrjälä 5384770cc2SLaurent Pinchart /** 5484770cc2SLaurent Pinchart * struct drm_format_info - information about a DRM format 5584770cc2SLaurent Pinchart * @format: 4CC format identifier (DRM_FORMAT_*) 5684770cc2SLaurent Pinchart * @depth: Color depth (number of bits per pixel excluding padding bits), 5784770cc2SLaurent Pinchart * valid for a subset of RGB formats only. This is a legacy field, do not 5884770cc2SLaurent Pinchart * use in new code and set to 0 for new formats. 5984770cc2SLaurent Pinchart * @num_planes: Number of color planes (1 to 3) 6084770cc2SLaurent Pinchart * @cpp: Number of bytes per pixel (per plane) 6184770cc2SLaurent Pinchart * @hsub: Horizontal chroma subsampling factor 6284770cc2SLaurent Pinchart * @vsub: Vertical chroma subsampling factor 634cc4e1b4SMaxime Ripard * @has_alpha: Does the format embeds an alpha component? 64ce2d5461SAyan Kumar Halder * @is_yuv: Is it a YUV format? 6584770cc2SLaurent Pinchart */ 6684770cc2SLaurent Pinchart struct drm_format_info { 6784770cc2SLaurent Pinchart u32 format; 6884770cc2SLaurent Pinchart u8 depth; 6984770cc2SLaurent Pinchart u8 num_planes; 7084770cc2SLaurent Pinchart u8 cpp[3]; 7184770cc2SLaurent Pinchart u8 hsub; 7284770cc2SLaurent Pinchart u8 vsub; 734cc4e1b4SMaxime Ripard bool has_alpha; 74ce2d5461SAyan Kumar Halder bool is_yuv; 7584770cc2SLaurent Pinchart }; 7684770cc2SLaurent Pinchart 77b3c11ac2SEric Engestrom /** 78b3c11ac2SEric Engestrom * struct drm_format_name_buf - name of a DRM format 79b3c11ac2SEric Engestrom * @str: string buffer containing the format name 80b3c11ac2SEric Engestrom */ 81b3c11ac2SEric Engestrom struct drm_format_name_buf { 82b3c11ac2SEric Engestrom char str[32]; 83b3c11ac2SEric Engestrom }; 84b3c11ac2SEric Engestrom 85333d2da5SLaurent Pinchart const struct drm_format_info *__drm_format_info(u32 format); 8684770cc2SLaurent Pinchart const struct drm_format_info *drm_format_info(u32 format); 876a0f9ebfSVille Syrjälä const struct drm_format_info * 886a0f9ebfSVille Syrjälä drm_get_format_info(struct drm_device *dev, 896a0f9ebfSVille Syrjälä const struct drm_mode_fb_cmd2 *mode_cmd); 90ec5e3047SDaniel Vetter uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth); 91059b5eb5SGerd Hoffmann uint32_t drm_driver_legacy_fb_format(struct drm_device *dev, 92059b5eb5SGerd Hoffmann uint32_t bpp, uint32_t depth); 93ae4df11aSLaurent Pinchart int drm_format_num_planes(uint32_t format); 94ae4df11aSLaurent Pinchart int drm_format_plane_cpp(uint32_t format, int plane); 95ae4df11aSLaurent Pinchart int drm_format_horz_chroma_subsampling(uint32_t format); 96ae4df11aSLaurent Pinchart int drm_format_vert_chroma_subsampling(uint32_t format); 97ae4df11aSLaurent Pinchart int drm_format_plane_width(int width, uint32_t format, int plane); 98ae4df11aSLaurent Pinchart int drm_format_plane_height(int height, uint32_t format, int plane); 99b3c11ac2SEric Engestrom const char *drm_get_format_name(uint32_t format, struct drm_format_name_buf *buf); 100ae4df11aSLaurent Pinchart 101ae4df11aSLaurent Pinchart #endif /* __DRM_FOURCC_H__ */ 102