forked from Minki/linux
b92db7e4fe
As Rn covers single-channel formats with a direct relationship between
channel value and brightness, and Cn can be any colors, there are
currently no fourcc codes to describe single-channel formats with an
inverse relationship between channel value and brightness.
Introduce fourcc codes for a single-channel frame buffer format with
two, four, sixteen, or 256 brightness ("darkness") levels, where there
is an inverse relationship between channel value and brightness.
As the number of bits per pixel may be less than eight, some of these
formats rely on proper block handling for the calculation of bits per
pixel and pitch.
The fill order (the order in which multiple pixels are packed in a byte)
is the same order as used for grayscale (2, 4, and 16 levels) images in
the PNG specification, Version 1.2.
This order is also the recommended and default order (FillOrder = 1) for
bilevel and grayscale (16 levels) images in the TIFF 6.0 Specification,
and is also used for monochrome images in the PBM file format,
monochrome Linux frame buffer logos, and BDF and PSF (Linux kernel) font
files.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/6119f3abeda9baaa88652843960adc032da276b4.1657294931.git.geert@linux-m68k.org
447 lines
23 KiB
C
447 lines
23 KiB
C
/*
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* Copyright (c) 2016 Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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*
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* DRM core format related functions
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that copyright
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* notice and this permission notice appear in supporting documentation, and
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* that the name of the copyright holders not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. The copyright holders make no representations
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* about the suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*/
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#include <linux/bug.h>
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#include <linux/ctype.h>
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#include <linux/export.h>
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#include <linux/kernel.h>
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#include <drm/drm_device.h>
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#include <drm/drm_fourcc.h>
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/**
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* drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
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* @bpp: bits per pixels
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* @depth: bit depth per pixel
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*
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* Computes a drm fourcc pixel format code for the given @bpp/@depth values.
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* Useful in fbdev emulation code, since that deals in those values.
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*/
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uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
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{
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uint32_t fmt = DRM_FORMAT_INVALID;
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switch (bpp) {
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case 1:
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if (depth == 1)
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fmt = DRM_FORMAT_C1;
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break;
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case 2:
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if (depth == 2)
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fmt = DRM_FORMAT_C2;
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break;
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case 4:
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if (depth == 4)
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fmt = DRM_FORMAT_C4;
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break;
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case 8:
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if (depth == 8)
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fmt = DRM_FORMAT_C8;
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break;
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case 16:
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switch (depth) {
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case 15:
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fmt = DRM_FORMAT_XRGB1555;
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break;
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case 16:
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fmt = DRM_FORMAT_RGB565;
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break;
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default:
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break;
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}
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break;
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case 24:
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if (depth == 24)
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fmt = DRM_FORMAT_RGB888;
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break;
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case 32:
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switch (depth) {
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case 24:
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fmt = DRM_FORMAT_XRGB8888;
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break;
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case 30:
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fmt = DRM_FORMAT_XRGB2101010;
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break;
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case 32:
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fmt = DRM_FORMAT_ARGB8888;
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break;
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default:
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break;
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}
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break;
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default:
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break;
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}
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return fmt;
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}
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EXPORT_SYMBOL(drm_mode_legacy_fb_format);
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/**
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* drm_driver_legacy_fb_format - compute drm fourcc code from legacy description
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* @dev: DRM device
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* @bpp: bits per pixels
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* @depth: bit depth per pixel
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*
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* Computes a drm fourcc pixel format code for the given @bpp/@depth values.
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* Unlike drm_mode_legacy_fb_format() this looks at the drivers mode_config,
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* and depending on the &drm_mode_config.quirk_addfb_prefer_host_byte_order flag
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* it returns little endian byte order or host byte order framebuffer formats.
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*/
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uint32_t drm_driver_legacy_fb_format(struct drm_device *dev,
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uint32_t bpp, uint32_t depth)
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{
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uint32_t fmt = drm_mode_legacy_fb_format(bpp, depth);
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if (dev->mode_config.quirk_addfb_prefer_host_byte_order) {
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if (fmt == DRM_FORMAT_XRGB8888)
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fmt = DRM_FORMAT_HOST_XRGB8888;
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if (fmt == DRM_FORMAT_ARGB8888)
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fmt = DRM_FORMAT_HOST_ARGB8888;
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if (fmt == DRM_FORMAT_RGB565)
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fmt = DRM_FORMAT_HOST_RGB565;
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if (fmt == DRM_FORMAT_XRGB1555)
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fmt = DRM_FORMAT_HOST_XRGB1555;
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}
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if (dev->mode_config.quirk_addfb_prefer_xbgr_30bpp &&
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fmt == DRM_FORMAT_XRGB2101010)
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fmt = DRM_FORMAT_XBGR2101010;
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return fmt;
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}
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EXPORT_SYMBOL(drm_driver_legacy_fb_format);
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/*
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* Internal function to query information for a given format. See
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* drm_format_info() for the public API.
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*/
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const struct drm_format_info *__drm_format_info(u32 format)
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{
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static const struct drm_format_info formats[] = {
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{ .format = DRM_FORMAT_C1, .depth = 1, .num_planes = 1,
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.char_per_block = { 1, }, .block_w = { 8, }, .block_h = { 1, }, .hsub = 1, .vsub = 1, .is_color_indexed = true },
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{ .format = DRM_FORMAT_C2, .depth = 2, .num_planes = 1,
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.char_per_block = { 1, }, .block_w = { 4, }, .block_h = { 1, }, .hsub = 1, .vsub = 1, .is_color_indexed = true },
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{ .format = DRM_FORMAT_C4, .depth = 4, .num_planes = 1,
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.char_per_block = { 1, }, .block_w = { 2, }, .block_h = { 1, }, .hsub = 1, .vsub = 1, .is_color_indexed = true },
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{ .format = DRM_FORMAT_C8, .depth = 8, .num_planes = 1, .cpp = { 1, 0, 0 }, .hsub = 1, .vsub = 1, .is_color_indexed = true },
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{ .format = DRM_FORMAT_D1, .depth = 1, .num_planes = 1,
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.char_per_block = { 1, }, .block_w = { 8, }, .block_h = { 1, }, .hsub = 1, .vsub = 1 },
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{ .format = DRM_FORMAT_D2, .depth = 2, .num_planes = 1,
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.char_per_block = { 1, }, .block_w = { 4, }, .block_h = { 1, }, .hsub = 1, .vsub = 1 },
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{ .format = DRM_FORMAT_D4, .depth = 4, .num_planes = 1,
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.char_per_block = { 1, }, .block_w = { 2, }, .block_h = { 1, }, .hsub = 1, .vsub = 1 },
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{ .format = DRM_FORMAT_D8, .depth = 8, .num_planes = 1, .cpp = { 1, 0, 0 }, .hsub = 1, .vsub = 1 },
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{ .format = DRM_FORMAT_R1, .depth = 1, .num_planes = 1,
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.char_per_block = { 1, }, .block_w = { 8, }, .block_h = { 1, }, .hsub = 1, .vsub = 1 },
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{ .format = DRM_FORMAT_R2, .depth = 2, .num_planes = 1,
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.char_per_block = { 1, }, .block_w = { 4, }, .block_h = { 1, }, .hsub = 1, .vsub = 1 },
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{ .format = DRM_FORMAT_R4, .depth = 4, .num_planes = 1,
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.char_per_block = { 1, }, .block_w = { 2, }, .block_h = { 1, }, .hsub = 1, .vsub = 1 },
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{ .format = DRM_FORMAT_R8, .depth = 8, .num_planes = 1, .cpp = { 1, 0, 0 }, .hsub = 1, .vsub = 1 },
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{ .format = DRM_FORMAT_R10, .depth = 10, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
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{ .format = DRM_FORMAT_R12, .depth = 12, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
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{ .format = DRM_FORMAT_RGB332, .depth = 8, .num_planes = 1, .cpp = { 1, 0, 0 }, .hsub = 1, .vsub = 1 },
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{ .format = DRM_FORMAT_BGR233, .depth = 8, .num_planes = 1, .cpp = { 1, 0, 0 }, .hsub = 1, .vsub = 1 },
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{ .format = DRM_FORMAT_XRGB4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
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{ .format = DRM_FORMAT_XBGR4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
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{ .format = DRM_FORMAT_RGBX4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
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{ .format = DRM_FORMAT_BGRX4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
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{ .format = DRM_FORMAT_ARGB4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
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{ .format = DRM_FORMAT_ABGR4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
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{ .format = DRM_FORMAT_RGBA4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
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{ .format = DRM_FORMAT_BGRA4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
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{ .format = DRM_FORMAT_XRGB1555, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
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{ .format = DRM_FORMAT_XBGR1555, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
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{ .format = DRM_FORMAT_RGBX5551, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
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{ .format = DRM_FORMAT_BGRX5551, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
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{ .format = DRM_FORMAT_ARGB1555, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
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{ .format = DRM_FORMAT_ABGR1555, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
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{ .format = DRM_FORMAT_RGBA5551, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
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{ .format = DRM_FORMAT_BGRA5551, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
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{ .format = DRM_FORMAT_RGB565, .depth = 16, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
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{ .format = DRM_FORMAT_BGR565, .depth = 16, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
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{ .format = DRM_FORMAT_RGB888, .depth = 24, .num_planes = 1, .cpp = { 3, 0, 0 }, .hsub = 1, .vsub = 1 },
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{ .format = DRM_FORMAT_BGR888, .depth = 24, .num_planes = 1, .cpp = { 3, 0, 0 }, .hsub = 1, .vsub = 1 },
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{ .format = DRM_FORMAT_XRGB8888, .depth = 24, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
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{ .format = DRM_FORMAT_XBGR8888, .depth = 24, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
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{ .format = DRM_FORMAT_RGBX8888, .depth = 24, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
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{ .format = DRM_FORMAT_BGRX8888, .depth = 24, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
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{ .format = DRM_FORMAT_RGB565_A8, .depth = 24, .num_planes = 2, .cpp = { 2, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
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{ .format = DRM_FORMAT_BGR565_A8, .depth = 24, .num_planes = 2, .cpp = { 2, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
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{ .format = DRM_FORMAT_XRGB2101010, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
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{ .format = DRM_FORMAT_XBGR2101010, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
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{ .format = DRM_FORMAT_RGBX1010102, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
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{ .format = DRM_FORMAT_BGRX1010102, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
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{ .format = DRM_FORMAT_ARGB2101010, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
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{ .format = DRM_FORMAT_ABGR2101010, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
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{ .format = DRM_FORMAT_RGBA1010102, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
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{ .format = DRM_FORMAT_BGRA1010102, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
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{ .format = DRM_FORMAT_ARGB8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
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{ .format = DRM_FORMAT_ABGR8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
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{ .format = DRM_FORMAT_RGBA8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
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{ .format = DRM_FORMAT_BGRA8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
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{ .format = DRM_FORMAT_XRGB16161616F, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1 },
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{ .format = DRM_FORMAT_XBGR16161616F, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1 },
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{ .format = DRM_FORMAT_ARGB16161616F, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
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{ .format = DRM_FORMAT_ABGR16161616F, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
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{ .format = DRM_FORMAT_AXBXGXRX106106106106, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
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{ .format = DRM_FORMAT_XRGB16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1 },
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{ .format = DRM_FORMAT_XBGR16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1 },
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{ .format = DRM_FORMAT_ARGB16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
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{ .format = DRM_FORMAT_ABGR16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
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{ .format = DRM_FORMAT_RGB888_A8, .depth = 32, .num_planes = 2, .cpp = { 3, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
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{ .format = DRM_FORMAT_BGR888_A8, .depth = 32, .num_planes = 2, .cpp = { 3, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
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{ .format = DRM_FORMAT_XRGB8888_A8, .depth = 32, .num_planes = 2, .cpp = { 4, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
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{ .format = DRM_FORMAT_XBGR8888_A8, .depth = 32, .num_planes = 2, .cpp = { 4, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
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{ .format = DRM_FORMAT_RGBX8888_A8, .depth = 32, .num_planes = 2, .cpp = { 4, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
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{ .format = DRM_FORMAT_BGRX8888_A8, .depth = 32, .num_planes = 2, .cpp = { 4, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
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{ .format = DRM_FORMAT_YUV410, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 4, .vsub = 4, .is_yuv = true },
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{ .format = DRM_FORMAT_YVU410, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 4, .vsub = 4, .is_yuv = true },
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{ .format = DRM_FORMAT_YUV411, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 4, .vsub = 1, .is_yuv = true },
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{ .format = DRM_FORMAT_YVU411, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 4, .vsub = 1, .is_yuv = true },
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{ .format = DRM_FORMAT_YUV420, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 2, .is_yuv = true },
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{ .format = DRM_FORMAT_YVU420, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 2, .is_yuv = true },
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{ .format = DRM_FORMAT_YUV422, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 1, .is_yuv = true },
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{ .format = DRM_FORMAT_YVU422, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 1, .is_yuv = true },
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{ .format = DRM_FORMAT_YUV444, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 1, .vsub = 1, .is_yuv = true },
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{ .format = DRM_FORMAT_YVU444, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 1, .vsub = 1, .is_yuv = true },
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{ .format = DRM_FORMAT_NV12, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 2, .is_yuv = true },
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{ .format = DRM_FORMAT_NV21, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 2, .is_yuv = true },
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{ .format = DRM_FORMAT_NV16, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
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{ .format = DRM_FORMAT_NV61, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
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{ .format = DRM_FORMAT_NV24, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true },
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{ .format = DRM_FORMAT_NV42, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true },
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{ .format = DRM_FORMAT_YUYV, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
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{ .format = DRM_FORMAT_YVYU, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
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{ .format = DRM_FORMAT_UYVY, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
|
|
{ .format = DRM_FORMAT_VYUY, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
|
|
{ .format = DRM_FORMAT_XYUV8888, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true },
|
|
{ .format = DRM_FORMAT_VUY888, .depth = 0, .num_planes = 1, .cpp = { 3, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true },
|
|
{ .format = DRM_FORMAT_AYUV, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true, .is_yuv = true },
|
|
{ .format = DRM_FORMAT_Y210, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
|
|
{ .format = DRM_FORMAT_Y212, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
|
|
{ .format = DRM_FORMAT_Y216, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
|
|
{ .format = DRM_FORMAT_Y410, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true, .is_yuv = true },
|
|
{ .format = DRM_FORMAT_Y412, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true, .is_yuv = true },
|
|
{ .format = DRM_FORMAT_Y416, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true, .is_yuv = true },
|
|
{ .format = DRM_FORMAT_XVYU2101010, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true },
|
|
{ .format = DRM_FORMAT_XVYU12_16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true },
|
|
{ .format = DRM_FORMAT_XVYU16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true },
|
|
{ .format = DRM_FORMAT_Y0L0, .depth = 0, .num_planes = 1,
|
|
.char_per_block = { 8, 0, 0 }, .block_w = { 2, 0, 0 }, .block_h = { 2, 0, 0 },
|
|
.hsub = 2, .vsub = 2, .has_alpha = true, .is_yuv = true },
|
|
{ .format = DRM_FORMAT_X0L0, .depth = 0, .num_planes = 1,
|
|
.char_per_block = { 8, 0, 0 }, .block_w = { 2, 0, 0 }, .block_h = { 2, 0, 0 },
|
|
.hsub = 2, .vsub = 2, .is_yuv = true },
|
|
{ .format = DRM_FORMAT_Y0L2, .depth = 0, .num_planes = 1,
|
|
.char_per_block = { 8, 0, 0 }, .block_w = { 2, 0, 0 }, .block_h = { 2, 0, 0 },
|
|
.hsub = 2, .vsub = 2, .has_alpha = true, .is_yuv = true },
|
|
{ .format = DRM_FORMAT_X0L2, .depth = 0, .num_planes = 1,
|
|
.char_per_block = { 8, 0, 0 }, .block_w = { 2, 0, 0 }, .block_h = { 2, 0, 0 },
|
|
.hsub = 2, .vsub = 2, .is_yuv = true },
|
|
{ .format = DRM_FORMAT_P010, .depth = 0, .num_planes = 2,
|
|
.char_per_block = { 2, 4, 0 }, .block_w = { 1, 1, 0 }, .block_h = { 1, 1, 0 },
|
|
.hsub = 2, .vsub = 2, .is_yuv = true},
|
|
{ .format = DRM_FORMAT_P012, .depth = 0, .num_planes = 2,
|
|
.char_per_block = { 2, 4, 0 }, .block_w = { 1, 1, 0 }, .block_h = { 1, 1, 0 },
|
|
.hsub = 2, .vsub = 2, .is_yuv = true},
|
|
{ .format = DRM_FORMAT_P016, .depth = 0, .num_planes = 2,
|
|
.char_per_block = { 2, 4, 0 }, .block_w = { 1, 1, 0 }, .block_h = { 1, 1, 0 },
|
|
.hsub = 2, .vsub = 2, .is_yuv = true},
|
|
{ .format = DRM_FORMAT_P210, .depth = 0,
|
|
.num_planes = 2, .char_per_block = { 2, 4, 0 },
|
|
.block_w = { 1, 1, 0 }, .block_h = { 1, 1, 0 }, .hsub = 2,
|
|
.vsub = 1, .is_yuv = true },
|
|
{ .format = DRM_FORMAT_VUY101010, .depth = 0,
|
|
.num_planes = 1, .cpp = { 0, 0, 0 }, .hsub = 1, .vsub = 1,
|
|
.is_yuv = true },
|
|
{ .format = DRM_FORMAT_YUV420_8BIT, .depth = 0,
|
|
.num_planes = 1, .cpp = { 0, 0, 0 }, .hsub = 2, .vsub = 2,
|
|
.is_yuv = true },
|
|
{ .format = DRM_FORMAT_YUV420_10BIT, .depth = 0,
|
|
.num_planes = 1, .cpp = { 0, 0, 0 }, .hsub = 2, .vsub = 2,
|
|
.is_yuv = true },
|
|
{ .format = DRM_FORMAT_NV15, .depth = 0,
|
|
.num_planes = 2, .char_per_block = { 5, 5, 0 },
|
|
.block_w = { 4, 2, 0 }, .block_h = { 1, 1, 0 }, .hsub = 2,
|
|
.vsub = 2, .is_yuv = true },
|
|
{ .format = DRM_FORMAT_Q410, .depth = 0,
|
|
.num_planes = 3, .char_per_block = { 2, 2, 2 },
|
|
.block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 }, .hsub = 0,
|
|
.vsub = 0, .is_yuv = true },
|
|
{ .format = DRM_FORMAT_Q401, .depth = 0,
|
|
.num_planes = 3, .char_per_block = { 2, 2, 2 },
|
|
.block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 }, .hsub = 0,
|
|
.vsub = 0, .is_yuv = true },
|
|
{ .format = DRM_FORMAT_P030, .depth = 0, .num_planes = 2,
|
|
.char_per_block = { 4, 8, 0 }, .block_w = { 3, 3, 0 }, .block_h = { 1, 1, 0 },
|
|
.hsub = 2, .vsub = 2, .is_yuv = true},
|
|
};
|
|
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(formats); ++i) {
|
|
if (formats[i].format == format)
|
|
return &formats[i];
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* drm_format_info - query information for a given format
|
|
* @format: pixel format (DRM_FORMAT_*)
|
|
*
|
|
* The caller should only pass a supported pixel format to this function.
|
|
* Unsupported pixel formats will generate a warning in the kernel log.
|
|
*
|
|
* Returns:
|
|
* The instance of struct drm_format_info that describes the pixel format, or
|
|
* NULL if the format is unsupported.
|
|
*/
|
|
const struct drm_format_info *drm_format_info(u32 format)
|
|
{
|
|
const struct drm_format_info *info;
|
|
|
|
info = __drm_format_info(format);
|
|
WARN_ON(!info);
|
|
return info;
|
|
}
|
|
EXPORT_SYMBOL(drm_format_info);
|
|
|
|
/**
|
|
* drm_get_format_info - query information for a given framebuffer configuration
|
|
* @dev: DRM device
|
|
* @mode_cmd: metadata from the userspace fb creation request
|
|
*
|
|
* Returns:
|
|
* The instance of struct drm_format_info that describes the pixel format, or
|
|
* NULL if the format is unsupported.
|
|
*/
|
|
const struct drm_format_info *
|
|
drm_get_format_info(struct drm_device *dev,
|
|
const struct drm_mode_fb_cmd2 *mode_cmd)
|
|
{
|
|
const struct drm_format_info *info = NULL;
|
|
|
|
if (dev->mode_config.funcs->get_format_info)
|
|
info = dev->mode_config.funcs->get_format_info(mode_cmd);
|
|
|
|
if (!info)
|
|
info = drm_format_info(mode_cmd->pixel_format);
|
|
|
|
return info;
|
|
}
|
|
EXPORT_SYMBOL(drm_get_format_info);
|
|
|
|
/**
|
|
* drm_format_info_block_width - width in pixels of block.
|
|
* @info: pixel format info
|
|
* @plane: plane index
|
|
*
|
|
* Returns:
|
|
* The width in pixels of a block, depending on the plane index.
|
|
*/
|
|
unsigned int drm_format_info_block_width(const struct drm_format_info *info,
|
|
int plane)
|
|
{
|
|
if (!info || plane < 0 || plane >= info->num_planes)
|
|
return 0;
|
|
|
|
if (!info->block_w[plane])
|
|
return 1;
|
|
return info->block_w[plane];
|
|
}
|
|
EXPORT_SYMBOL(drm_format_info_block_width);
|
|
|
|
/**
|
|
* drm_format_info_block_height - height in pixels of a block
|
|
* @info: pixel format info
|
|
* @plane: plane index
|
|
*
|
|
* Returns:
|
|
* The height in pixels of a block, depending on the plane index.
|
|
*/
|
|
unsigned int drm_format_info_block_height(const struct drm_format_info *info,
|
|
int plane)
|
|
{
|
|
if (!info || plane < 0 || plane >= info->num_planes)
|
|
return 0;
|
|
|
|
if (!info->block_h[plane])
|
|
return 1;
|
|
return info->block_h[plane];
|
|
}
|
|
EXPORT_SYMBOL(drm_format_info_block_height);
|
|
|
|
/**
|
|
* drm_format_info_bpp - number of bits per pixel
|
|
* @info: pixel format info
|
|
* @plane: plane index
|
|
*
|
|
* Returns:
|
|
* The actual number of bits per pixel, depending on the plane index.
|
|
*/
|
|
unsigned int drm_format_info_bpp(const struct drm_format_info *info, int plane)
|
|
{
|
|
if (!info || plane < 0 || plane >= info->num_planes)
|
|
return 0;
|
|
|
|
return info->char_per_block[plane] * 8 /
|
|
(drm_format_info_block_width(info, plane) *
|
|
drm_format_info_block_height(info, plane));
|
|
}
|
|
EXPORT_SYMBOL(drm_format_info_bpp);
|
|
|
|
/**
|
|
* drm_format_info_min_pitch - computes the minimum required pitch in bytes
|
|
* @info: pixel format info
|
|
* @plane: plane index
|
|
* @buffer_width: buffer width in pixels
|
|
*
|
|
* Returns:
|
|
* The minimum required pitch in bytes for a buffer by taking into consideration
|
|
* the pixel format information and the buffer width.
|
|
*/
|
|
uint64_t drm_format_info_min_pitch(const struct drm_format_info *info,
|
|
int plane, unsigned int buffer_width)
|
|
{
|
|
if (!info || plane < 0 || plane >= info->num_planes)
|
|
return 0;
|
|
|
|
return DIV_ROUND_UP_ULL((u64)buffer_width * info->char_per_block[plane],
|
|
drm_format_info_block_width(info, plane) *
|
|
drm_format_info_block_height(info, plane));
|
|
}
|
|
EXPORT_SYMBOL(drm_format_info_min_pitch);
|