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sys/dev/drm/core/drm_fourcc.c
- This file was added.
/* | |||||
* 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/drm_device.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 = DRM_FORMAT_INVALID; | |||||
switch (bpp) { | |||||
case 8: | |||||
if (depth == 8) | |||||
fmt = DRM_FORMAT_C8; | |||||
break; | |||||
case 16: | |||||
switch (depth) { | |||||
case 15: | |||||
fmt = DRM_FORMAT_XRGB1555; | |||||
break; | |||||
case 16: | |||||
fmt = DRM_FORMAT_RGB565; | |||||
break; | |||||
default: | |||||
break; | |||||
} | |||||
break; | |||||
case 24: | |||||
if (depth == 24) | |||||
fmt = DRM_FORMAT_RGB888; | |||||
break; | |||||
case 32: | |||||
switch (depth) { | |||||
case 24: | |||||
fmt = DRM_FORMAT_XRGB8888; | |||||
break; | |||||
case 30: | |||||
fmt = DRM_FORMAT_XRGB2101010; | |||||
break; | |||||
case 32: | |||||
fmt = DRM_FORMAT_ARGB8888; | |||||
break; | |||||
default: | |||||
break; | |||||
} | |||||
break; | |||||
default: | |||||
break; | |||||
} | |||||
return fmt; | |||||
} | |||||
EXPORT_SYMBOL(drm_mode_legacy_fb_format); | |||||
/** | |||||
* drm_driver_legacy_fb_format - compute drm fourcc code from legacy description | |||||
* @dev: DRM device | |||||
* @bpp: bits per pixels | |||||
* @depth: bit depth per pixel | |||||
* | |||||
* Computes a drm fourcc pixel format code for the given @bpp/@depth values. | |||||
* Unlike drm_mode_legacy_fb_format() this looks at the drivers mode_config, | |||||
* and depending on the &drm_mode_config.quirk_addfb_prefer_host_byte_order flag | |||||
* it returns little endian byte order or host byte order framebuffer formats. | |||||
*/ | |||||
uint32_t drm_driver_legacy_fb_format(struct drm_device *dev, | |||||
uint32_t bpp, uint32_t depth) | |||||
{ | |||||
uint32_t fmt = drm_mode_legacy_fb_format(bpp, depth); | |||||
if (dev->mode_config.quirk_addfb_prefer_host_byte_order) { | |||||
if (fmt == DRM_FORMAT_XRGB8888) | |||||
fmt = DRM_FORMAT_HOST_XRGB8888; | |||||
if (fmt == DRM_FORMAT_ARGB8888) | |||||
fmt = DRM_FORMAT_HOST_ARGB8888; | |||||
if (fmt == DRM_FORMAT_RGB565) | |||||
fmt = DRM_FORMAT_HOST_RGB565; | |||||
if (fmt == DRM_FORMAT_XRGB1555) | |||||
fmt = DRM_FORMAT_HOST_XRGB1555; | |||||
} | |||||
if (dev->mode_config.quirk_addfb_prefer_xbgr_30bpp && | |||||
fmt == DRM_FORMAT_XRGB2101010) | |||||
fmt = DRM_FORMAT_XBGR2101010; | |||||
return fmt; | |||||
} | |||||
EXPORT_SYMBOL(drm_driver_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, .has_alpha = true }, | |||||
{ .format = DRM_FORMAT_ABGR4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, | |||||
{ .format = DRM_FORMAT_RGBA4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, | |||||
{ .format = DRM_FORMAT_BGRA4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, | |||||
{ .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, .has_alpha = true }, | |||||
{ .format = DRM_FORMAT_ABGR1555, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, | |||||
{ .format = DRM_FORMAT_RGBA5551, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, | |||||
{ .format = DRM_FORMAT_BGRA5551, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, | |||||
{ .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, .has_alpha = true }, | |||||
{ .format = DRM_FORMAT_BGR565_A8, .depth = 24, .num_planes = 2, .cpp = { 2, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, | |||||
{ .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, .has_alpha = true }, | |||||
{ .format = DRM_FORMAT_ABGR2101010, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, | |||||
{ .format = DRM_FORMAT_RGBA1010102, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, | |||||
{ .format = DRM_FORMAT_BGRA1010102, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, | |||||
{ .format = DRM_FORMAT_ARGB8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, | |||||
{ .format = DRM_FORMAT_ABGR8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, | |||||
{ .format = DRM_FORMAT_RGBA8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, | |||||
{ .format = DRM_FORMAT_BGRA8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, | |||||
{ .format = DRM_FORMAT_XRGB16161616F, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1 }, | |||||
{ .format = DRM_FORMAT_XBGR16161616F, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1 }, | |||||
{ .format = DRM_FORMAT_ARGB16161616F, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, | |||||
{ .format = DRM_FORMAT_ABGR16161616F, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, | |||||
{ .format = DRM_FORMAT_RGB888_A8, .depth = 32, .num_planes = 2, .cpp = { 3, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, | |||||
{ .format = DRM_FORMAT_BGR888_A8, .depth = 32, .num_planes = 2, .cpp = { 3, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, | |||||
{ .format = DRM_FORMAT_XRGB8888_A8, .depth = 32, .num_planes = 2, .cpp = { 4, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, | |||||
{ .format = DRM_FORMAT_XBGR8888_A8, .depth = 32, .num_planes = 2, .cpp = { 4, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, | |||||
{ .format = DRM_FORMAT_RGBX8888_A8, .depth = 32, .num_planes = 2, .cpp = { 4, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, | |||||
{ .format = DRM_FORMAT_BGRX8888_A8, .depth = 32, .num_planes = 2, .cpp = { 4, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true }, | |||||
{ .format = DRM_FORMAT_YUV410, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 4, .vsub = 4, .is_yuv = true }, | |||||
{ .format = DRM_FORMAT_YVU410, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 4, .vsub = 4, .is_yuv = true }, | |||||
{ .format = DRM_FORMAT_YUV411, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 4, .vsub = 1, .is_yuv = true }, | |||||
{ .format = DRM_FORMAT_YVU411, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 4, .vsub = 1, .is_yuv = true }, | |||||
{ .format = DRM_FORMAT_YUV420, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 2, .is_yuv = true }, | |||||
{ .format = DRM_FORMAT_YVU420, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 2, .is_yuv = true }, | |||||
{ .format = DRM_FORMAT_YUV422, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 1, .is_yuv = true }, | |||||
{ .format = DRM_FORMAT_YVU422, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 1, .is_yuv = true }, | |||||
{ .format = DRM_FORMAT_YUV444, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 1, .vsub = 1, .is_yuv = true }, | |||||
{ .format = DRM_FORMAT_YVU444, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 1, .vsub = 1, .is_yuv = true }, | |||||
{ .format = DRM_FORMAT_NV12, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 2, .is_yuv = true }, | |||||
{ .format = DRM_FORMAT_NV21, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 2, .is_yuv = true }, | |||||
{ .format = DRM_FORMAT_NV16, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true }, | |||||
{ .format = DRM_FORMAT_NV61, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true }, | |||||
{ .format = DRM_FORMAT_NV24, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true }, | |||||
{ .format = DRM_FORMAT_NV42, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true }, | |||||
{ .format = DRM_FORMAT_YUYV, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true }, | |||||
{ .format = DRM_FORMAT_YVYU, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true }, | |||||
{ .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, 0, 0 }, .block_h = { 1, 0, 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, 0, 0 }, .block_h = { 1, 0, 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, 0, 0 }, .block_h = { 1, 0, 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, 0, 0 }, .block_h = { 1, 0, 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 }, | |||||
}; | |||||
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_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); |