mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-26 05:50:53 +07:00
628d4c46ee
Resync with drm-next, I have a patch which currently can't be applied because drm-misc-next lacked the latest drm/i915 code. Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
351 lines
14 KiB
C
351 lines
14 KiB
C
/*
|
|
* Copyright (c) 2016 Laurent Pinchart <laurent.pinchart@ideasonboard.com>
|
|
*
|
|
* DRM core format related functions
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include <linux/bug.h>
|
|
#include <linux/ctype.h>
|
|
#include <linux/export.h>
|
|
#include <linux/kernel.h>
|
|
|
|
#include <drm/drmP.h>
|
|
#include <drm/drm_fourcc.h>
|
|
|
|
static char printable_char(int c)
|
|
{
|
|
return isascii(c) && isprint(c) ? c : '?';
|
|
}
|
|
|
|
/**
|
|
* drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
|
|
* @bpp: bits per pixels
|
|
* @depth: bit depth per pixel
|
|
*
|
|
* Computes a drm fourcc pixel format code for the given @bpp/@depth values.
|
|
* Useful in fbdev emulation code, since that deals in those values.
|
|
*/
|
|
uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
|
|
{
|
|
uint32_t fmt;
|
|
|
|
switch (bpp) {
|
|
case 8:
|
|
fmt = DRM_FORMAT_C8;
|
|
break;
|
|
case 16:
|
|
if (depth == 15)
|
|
fmt = DRM_FORMAT_XRGB1555;
|
|
else
|
|
fmt = DRM_FORMAT_RGB565;
|
|
break;
|
|
case 24:
|
|
fmt = DRM_FORMAT_RGB888;
|
|
break;
|
|
case 32:
|
|
if (depth == 24)
|
|
fmt = DRM_FORMAT_XRGB8888;
|
|
else if (depth == 30)
|
|
fmt = DRM_FORMAT_XRGB2101010;
|
|
else
|
|
fmt = DRM_FORMAT_ARGB8888;
|
|
break;
|
|
default:
|
|
DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
|
|
fmt = DRM_FORMAT_XRGB8888;
|
|
break;
|
|
}
|
|
|
|
return fmt;
|
|
}
|
|
EXPORT_SYMBOL(drm_mode_legacy_fb_format);
|
|
|
|
/**
|
|
* drm_get_format_name - fill a string with a drm fourcc format's name
|
|
* @format: format to compute name of
|
|
* @buf: caller-supplied buffer
|
|
*/
|
|
const char *drm_get_format_name(uint32_t format, struct drm_format_name_buf *buf)
|
|
{
|
|
snprintf(buf->str, sizeof(buf->str),
|
|
"%c%c%c%c %s-endian (0x%08x)",
|
|
printable_char(format & 0xff),
|
|
printable_char((format >> 8) & 0xff),
|
|
printable_char((format >> 16) & 0xff),
|
|
printable_char((format >> 24) & 0x7f),
|
|
format & DRM_FORMAT_BIG_ENDIAN ? "big" : "little",
|
|
format);
|
|
|
|
return buf->str;
|
|
}
|
|
EXPORT_SYMBOL(drm_get_format_name);
|
|
|
|
/*
|
|
* Internal function to query information for a given format. See
|
|
* drm_format_info() for the public API.
|
|
*/
|
|
const struct drm_format_info *__drm_format_info(u32 format)
|
|
{
|
|
static const struct drm_format_info formats[] = {
|
|
{ .format = DRM_FORMAT_C8, .depth = 8, .num_planes = 1, .cpp = { 1, 0, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_RGB332, .depth = 8, .num_planes = 1, .cpp = { 1, 0, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_BGR233, .depth = 8, .num_planes = 1, .cpp = { 1, 0, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_XRGB4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_XBGR4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_RGBX4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_BGRX4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_ARGB4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_ABGR4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_RGBA4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_BGRA4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_XRGB1555, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_XBGR1555, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_RGBX5551, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_BGRX5551, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_ARGB1555, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_ABGR1555, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_RGBA5551, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_BGRA5551, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_RGB565, .depth = 16, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_BGR565, .depth = 16, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_RGB888, .depth = 24, .num_planes = 1, .cpp = { 3, 0, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_BGR888, .depth = 24, .num_planes = 1, .cpp = { 3, 0, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_XRGB8888, .depth = 24, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_XBGR8888, .depth = 24, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_RGBX8888, .depth = 24, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_BGRX8888, .depth = 24, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_RGB565_A8, .depth = 24, .num_planes = 2, .cpp = { 2, 1, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_BGR565_A8, .depth = 24, .num_planes = 2, .cpp = { 2, 1, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_XRGB2101010, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_XBGR2101010, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_RGBX1010102, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_BGRX1010102, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_ARGB2101010, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_ABGR2101010, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_RGBA1010102, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_BGRA1010102, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_ARGB8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_ABGR8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_RGBA8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_BGRA8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_RGB888_A8, .depth = 32, .num_planes = 2, .cpp = { 3, 1, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_BGR888_A8, .depth = 32, .num_planes = 2, .cpp = { 3, 1, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_XRGB8888_A8, .depth = 32, .num_planes = 2, .cpp = { 4, 1, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_XBGR8888_A8, .depth = 32, .num_planes = 2, .cpp = { 4, 1, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_RGBX8888_A8, .depth = 32, .num_planes = 2, .cpp = { 4, 1, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_BGRX8888_A8, .depth = 32, .num_planes = 2, .cpp = { 4, 1, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_YUV410, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 4, .vsub = 4 },
|
|
{ .format = DRM_FORMAT_YVU410, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 4, .vsub = 4 },
|
|
{ .format = DRM_FORMAT_YUV411, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 4, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_YVU411, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 4, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_YUV420, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 2 },
|
|
{ .format = DRM_FORMAT_YVU420, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 2 },
|
|
{ .format = DRM_FORMAT_YUV422, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_YVU422, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_YUV444, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_YVU444, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_NV12, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 2 },
|
|
{ .format = DRM_FORMAT_NV21, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 2 },
|
|
{ .format = DRM_FORMAT_NV16, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_NV61, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_NV24, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_NV42, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 1, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_YUYV, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_YVYU, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_UYVY, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_VYUY, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1 },
|
|
{ .format = DRM_FORMAT_AYUV, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
|
|
};
|
|
|
|
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_num_planes - get the number of planes for format
|
|
* @format: pixel format (DRM_FORMAT_*)
|
|
*
|
|
* Returns:
|
|
* The number of planes used by the specified pixel format.
|
|
*/
|
|
int drm_format_num_planes(uint32_t format)
|
|
{
|
|
const struct drm_format_info *info;
|
|
|
|
info = drm_format_info(format);
|
|
return info ? info->num_planes : 1;
|
|
}
|
|
EXPORT_SYMBOL(drm_format_num_planes);
|
|
|
|
/**
|
|
* drm_format_plane_cpp - determine the bytes per pixel value
|
|
* @format: pixel format (DRM_FORMAT_*)
|
|
* @plane: plane index
|
|
*
|
|
* Returns:
|
|
* The bytes per pixel value for the specified plane.
|
|
*/
|
|
int drm_format_plane_cpp(uint32_t format, int plane)
|
|
{
|
|
const struct drm_format_info *info;
|
|
|
|
info = drm_format_info(format);
|
|
if (!info || plane >= info->num_planes)
|
|
return 0;
|
|
|
|
return info->cpp[plane];
|
|
}
|
|
EXPORT_SYMBOL(drm_format_plane_cpp);
|
|
|
|
/**
|
|
* drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
|
|
* @format: pixel format (DRM_FORMAT_*)
|
|
*
|
|
* Returns:
|
|
* The horizontal chroma subsampling factor for the
|
|
* specified pixel format.
|
|
*/
|
|
int drm_format_horz_chroma_subsampling(uint32_t format)
|
|
{
|
|
const struct drm_format_info *info;
|
|
|
|
info = drm_format_info(format);
|
|
return info ? info->hsub : 1;
|
|
}
|
|
EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
|
|
|
|
/**
|
|
* drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
|
|
* @format: pixel format (DRM_FORMAT_*)
|
|
*
|
|
* Returns:
|
|
* The vertical chroma subsampling factor for the
|
|
* specified pixel format.
|
|
*/
|
|
int drm_format_vert_chroma_subsampling(uint32_t format)
|
|
{
|
|
const struct drm_format_info *info;
|
|
|
|
info = drm_format_info(format);
|
|
return info ? info->vsub : 1;
|
|
}
|
|
EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
|
|
|
|
/**
|
|
* drm_format_plane_width - width of the plane given the first plane
|
|
* @width: width of the first plane
|
|
* @format: pixel format
|
|
* @plane: plane index
|
|
*
|
|
* Returns:
|
|
* The width of @plane, given that the width of the first plane is @width.
|
|
*/
|
|
int drm_format_plane_width(int width, uint32_t format, int plane)
|
|
{
|
|
const struct drm_format_info *info;
|
|
|
|
info = drm_format_info(format);
|
|
if (!info || plane >= info->num_planes)
|
|
return 0;
|
|
|
|
if (plane == 0)
|
|
return width;
|
|
|
|
return width / info->hsub;
|
|
}
|
|
EXPORT_SYMBOL(drm_format_plane_width);
|
|
|
|
/**
|
|
* drm_format_plane_height - height of the plane given the first plane
|
|
* @height: height of the first plane
|
|
* @format: pixel format
|
|
* @plane: plane index
|
|
*
|
|
* Returns:
|
|
* The height of @plane, given that the height of the first plane is @height.
|
|
*/
|
|
int drm_format_plane_height(int height, uint32_t format, int plane)
|
|
{
|
|
const struct drm_format_info *info;
|
|
|
|
info = drm_format_info(format);
|
|
if (!info || plane >= info->num_planes)
|
|
return 0;
|
|
|
|
if (plane == 0)
|
|
return height;
|
|
|
|
return height / info->vsub;
|
|
}
|
|
EXPORT_SYMBOL(drm_format_plane_height);
|