mirror of
https://github.com/torvalds/linux.git
synced 2024-11-27 22:51:35 +00:00
6a0f9ebfc5
Allow drivers to return a custom drm_format_info structure for special
fb layouts. We'll use this for the compression control surface in i915.
v2: Fix drm_get_format_info() kernel doc (Laurent)
Don't pass 'dev' to the new hook (Laurent)
v3: s/compresssion/compression/ (Ben)
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Ben Widawsky <ben@bwidawsk.net>
Cc: Jason Ekstrand <jason@jlekstrand.net>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Link: http://patchwork.freedesktop.org/patch/msgid/20170321181218.10042-4-ville.syrjala@linux.intel.com
74 lines
2.8 KiB
C
74 lines
2.8 KiB
C
/*
|
|
* Copyright (c) 2016 Laurent Pinchart <laurent.pinchart@ideasonboard.com>
|
|
*
|
|
* Permission to use, copy, modify, distribute, and sell this software and its
|
|
* documentation for any purpose is hereby granted without fee, provided that
|
|
* the above copyright notice appear in all copies and that both that copyright
|
|
* notice and this permission notice appear in supporting documentation, and
|
|
* that the name of the copyright holders not be used in advertising or
|
|
* publicity pertaining to distribution of the software without specific,
|
|
* written prior permission. The copyright holders make no representations
|
|
* about the suitability of this software for any purpose. It is provided "as
|
|
* is" without express or implied warranty.
|
|
*
|
|
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
|
|
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
|
|
* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
|
|
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
|
|
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
|
|
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
|
|
* OF THIS SOFTWARE.
|
|
*/
|
|
#ifndef __DRM_FOURCC_H__
|
|
#define __DRM_FOURCC_H__
|
|
|
|
#include <linux/types.h>
|
|
#include <uapi/drm/drm_fourcc.h>
|
|
|
|
struct drm_device;
|
|
struct drm_mode_fb_cmd2;
|
|
|
|
/**
|
|
* struct drm_format_info - information about a DRM format
|
|
* @format: 4CC format identifier (DRM_FORMAT_*)
|
|
* @depth: Color depth (number of bits per pixel excluding padding bits),
|
|
* valid for a subset of RGB formats only. This is a legacy field, do not
|
|
* use in new code and set to 0 for new formats.
|
|
* @num_planes: Number of color planes (1 to 3)
|
|
* @cpp: Number of bytes per pixel (per plane)
|
|
* @hsub: Horizontal chroma subsampling factor
|
|
* @vsub: Vertical chroma subsampling factor
|
|
*/
|
|
struct drm_format_info {
|
|
u32 format;
|
|
u8 depth;
|
|
u8 num_planes;
|
|
u8 cpp[3];
|
|
u8 hsub;
|
|
u8 vsub;
|
|
};
|
|
|
|
/**
|
|
* struct drm_format_name_buf - name of a DRM format
|
|
* @str: string buffer containing the format name
|
|
*/
|
|
struct drm_format_name_buf {
|
|
char str[32];
|
|
};
|
|
|
|
const struct drm_format_info *__drm_format_info(u32 format);
|
|
const struct drm_format_info *drm_format_info(u32 format);
|
|
const struct drm_format_info *
|
|
drm_get_format_info(struct drm_device *dev,
|
|
const struct drm_mode_fb_cmd2 *mode_cmd);
|
|
uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth);
|
|
int drm_format_num_planes(uint32_t format);
|
|
int drm_format_plane_cpp(uint32_t format, int plane);
|
|
int drm_format_horz_chroma_subsampling(uint32_t format);
|
|
int drm_format_vert_chroma_subsampling(uint32_t format);
|
|
int drm_format_plane_width(int width, uint32_t format, int plane);
|
|
int drm_format_plane_height(int height, uint32_t format, int plane);
|
|
const char *drm_get_format_name(uint32_t format, struct drm_format_name_buf *buf);
|
|
|
|
#endif /* __DRM_FOURCC_H__ */
|