281 lines
6.3 KiB
C
281 lines
6.3 KiB
C
/*
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* Copyright (C) 2013 Google, Inc.
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* modified from drivers/gpu/drm/drm_crtc.c
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <linux/export.h>
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#include <linux/kernel.h>
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#include <drm/drm_fourcc.h>
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#include <video/adf_format.h>
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bool adf_format_is_standard(u32 format)
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{
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switch (format) {
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case DRM_FORMAT_C8:
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case DRM_FORMAT_RGB332:
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case DRM_FORMAT_BGR233:
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case DRM_FORMAT_XRGB4444:
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case DRM_FORMAT_XBGR4444:
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case DRM_FORMAT_RGBX4444:
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case DRM_FORMAT_BGRX4444:
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case DRM_FORMAT_ARGB4444:
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case DRM_FORMAT_ABGR4444:
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case DRM_FORMAT_RGBA4444:
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case DRM_FORMAT_BGRA4444:
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case DRM_FORMAT_XRGB1555:
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case DRM_FORMAT_XBGR1555:
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case DRM_FORMAT_RGBX5551:
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case DRM_FORMAT_BGRX5551:
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case DRM_FORMAT_ARGB1555:
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case DRM_FORMAT_ABGR1555:
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case DRM_FORMAT_RGBA5551:
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case DRM_FORMAT_BGRA5551:
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case DRM_FORMAT_RGB565:
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case DRM_FORMAT_BGR565:
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case DRM_FORMAT_RGB888:
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case DRM_FORMAT_BGR888:
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case DRM_FORMAT_XRGB8888:
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case DRM_FORMAT_XBGR8888:
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case DRM_FORMAT_RGBX8888:
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case DRM_FORMAT_BGRX8888:
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case DRM_FORMAT_ARGB8888:
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case DRM_FORMAT_ABGR8888:
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case DRM_FORMAT_RGBA8888:
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case DRM_FORMAT_BGRA8888:
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case DRM_FORMAT_XRGB2101010:
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case DRM_FORMAT_XBGR2101010:
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case DRM_FORMAT_RGBX1010102:
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case DRM_FORMAT_BGRX1010102:
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case DRM_FORMAT_ARGB2101010:
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case DRM_FORMAT_ABGR2101010:
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case DRM_FORMAT_RGBA1010102:
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case DRM_FORMAT_BGRA1010102:
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case DRM_FORMAT_YUYV:
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case DRM_FORMAT_YVYU:
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case DRM_FORMAT_UYVY:
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case DRM_FORMAT_VYUY:
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case DRM_FORMAT_AYUV:
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case DRM_FORMAT_NV12:
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case DRM_FORMAT_NV21:
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case DRM_FORMAT_NV16:
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case DRM_FORMAT_NV61:
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case DRM_FORMAT_YUV410:
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case DRM_FORMAT_YVU410:
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case DRM_FORMAT_YUV411:
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case DRM_FORMAT_YVU411:
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case DRM_FORMAT_YUV420:
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case DRM_FORMAT_YVU420:
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case DRM_FORMAT_YUV422:
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case DRM_FORMAT_YVU422:
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case DRM_FORMAT_YUV444:
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case DRM_FORMAT_YVU444:
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return true;
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default:
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return false;
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}
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}
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EXPORT_SYMBOL(adf_format_is_standard);
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bool adf_format_is_rgb(u32 format)
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{
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switch (format) {
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case DRM_FORMAT_C8:
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case DRM_FORMAT_RGB332:
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case DRM_FORMAT_BGR233:
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case DRM_FORMAT_XRGB1555:
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case DRM_FORMAT_XBGR1555:
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case DRM_FORMAT_RGBX5551:
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case DRM_FORMAT_BGRX5551:
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case DRM_FORMAT_ARGB1555:
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case DRM_FORMAT_ABGR1555:
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case DRM_FORMAT_RGBA5551:
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case DRM_FORMAT_BGRA5551:
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case DRM_FORMAT_RGB565:
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case DRM_FORMAT_BGR565:
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case DRM_FORMAT_RGB888:
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case DRM_FORMAT_BGR888:
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case DRM_FORMAT_XRGB8888:
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case DRM_FORMAT_XBGR8888:
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case DRM_FORMAT_RGBX8888:
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case DRM_FORMAT_BGRX8888:
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case DRM_FORMAT_XRGB2101010:
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case DRM_FORMAT_XBGR2101010:
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case DRM_FORMAT_RGBX1010102:
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case DRM_FORMAT_BGRX1010102:
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case DRM_FORMAT_ARGB2101010:
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case DRM_FORMAT_ABGR2101010:
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case DRM_FORMAT_RGBA1010102:
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case DRM_FORMAT_BGRA1010102:
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case DRM_FORMAT_ARGB8888:
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case DRM_FORMAT_ABGR8888:
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case DRM_FORMAT_RGBA8888:
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case DRM_FORMAT_BGRA8888:
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return true;
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default:
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return false;
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}
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}
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EXPORT_SYMBOL(adf_format_is_rgb);
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u8 adf_format_num_planes(u32 format)
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{
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switch (format) {
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case DRM_FORMAT_YUV410:
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case DRM_FORMAT_YVU410:
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case DRM_FORMAT_YUV411:
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case DRM_FORMAT_YVU411:
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case DRM_FORMAT_YUV420:
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case DRM_FORMAT_YVU420:
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case DRM_FORMAT_YUV422:
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case DRM_FORMAT_YVU422:
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case DRM_FORMAT_YUV444:
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case DRM_FORMAT_YVU444:
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return 3;
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case DRM_FORMAT_NV12:
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case DRM_FORMAT_NV21:
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case DRM_FORMAT_NV16:
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case DRM_FORMAT_NV61:
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return 2;
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default:
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return 1;
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}
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}
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EXPORT_SYMBOL(adf_format_num_planes);
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u8 adf_format_bpp(u32 format)
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{
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switch (format) {
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case DRM_FORMAT_C8:
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case DRM_FORMAT_RGB332:
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case DRM_FORMAT_BGR233:
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return 8;
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case DRM_FORMAT_XRGB1555:
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case DRM_FORMAT_XBGR1555:
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case DRM_FORMAT_RGBX5551:
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case DRM_FORMAT_BGRX5551:
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case DRM_FORMAT_ARGB1555:
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case DRM_FORMAT_ABGR1555:
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case DRM_FORMAT_RGBA5551:
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case DRM_FORMAT_BGRA5551:
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case DRM_FORMAT_RGB565:
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case DRM_FORMAT_BGR565:
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return 16;
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case DRM_FORMAT_RGB888:
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case DRM_FORMAT_BGR888:
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return 24;
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case DRM_FORMAT_XRGB8888:
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case DRM_FORMAT_XBGR8888:
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case DRM_FORMAT_RGBX8888:
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case DRM_FORMAT_BGRX8888:
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case DRM_FORMAT_XRGB2101010:
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case DRM_FORMAT_XBGR2101010:
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case DRM_FORMAT_RGBX1010102:
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case DRM_FORMAT_BGRX1010102:
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case DRM_FORMAT_ARGB2101010:
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case DRM_FORMAT_ABGR2101010:
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case DRM_FORMAT_RGBA1010102:
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case DRM_FORMAT_BGRA1010102:
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case DRM_FORMAT_ARGB8888:
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case DRM_FORMAT_ABGR8888:
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case DRM_FORMAT_RGBA8888:
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case DRM_FORMAT_BGRA8888:
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return 32;
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default:
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pr_debug("%s: unsupported pixel format %u\n", __func__, format);
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return 0;
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}
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}
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EXPORT_SYMBOL(adf_format_bpp);
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u8 adf_format_plane_cpp(u32 format, int plane)
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{
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if (plane >= adf_format_num_planes(format))
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return 0;
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switch (format) {
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case DRM_FORMAT_YUYV:
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case DRM_FORMAT_YVYU:
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case DRM_FORMAT_UYVY:
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case DRM_FORMAT_VYUY:
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return 2;
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case DRM_FORMAT_NV12:
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case DRM_FORMAT_NV21:
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case DRM_FORMAT_NV16:
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case DRM_FORMAT_NV61:
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return plane ? 2 : 1;
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case DRM_FORMAT_YUV410:
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case DRM_FORMAT_YVU410:
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case DRM_FORMAT_YUV411:
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case DRM_FORMAT_YVU411:
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case DRM_FORMAT_YUV420:
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case DRM_FORMAT_YVU420:
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case DRM_FORMAT_YUV422:
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case DRM_FORMAT_YVU422:
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case DRM_FORMAT_YUV444:
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case DRM_FORMAT_YVU444:
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return 1;
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default:
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return adf_format_bpp(format) / 8;
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}
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}
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EXPORT_SYMBOL(adf_format_plane_cpp);
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u8 adf_format_horz_chroma_subsampling(u32 format)
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{
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switch (format) {
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case DRM_FORMAT_YUV411:
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case DRM_FORMAT_YVU411:
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case DRM_FORMAT_YUV410:
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case DRM_FORMAT_YVU410:
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return 4;
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case DRM_FORMAT_YUYV:
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case DRM_FORMAT_YVYU:
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case DRM_FORMAT_UYVY:
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case DRM_FORMAT_VYUY:
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case DRM_FORMAT_NV12:
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case DRM_FORMAT_NV21:
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case DRM_FORMAT_NV16:
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case DRM_FORMAT_NV61:
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case DRM_FORMAT_YUV422:
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case DRM_FORMAT_YVU422:
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case DRM_FORMAT_YUV420:
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case DRM_FORMAT_YVU420:
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return 2;
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default:
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return 1;
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}
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}
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EXPORT_SYMBOL(adf_format_horz_chroma_subsampling);
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u8 adf_format_vert_chroma_subsampling(u32 format)
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{
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switch (format) {
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case DRM_FORMAT_YUV410:
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case DRM_FORMAT_YVU410:
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return 4;
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case DRM_FORMAT_YUV420:
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case DRM_FORMAT_YVU420:
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case DRM_FORMAT_NV12:
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case DRM_FORMAT_NV21:
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return 2;
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default:
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return 1;
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}
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}
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EXPORT_SYMBOL(adf_format_vert_chroma_subsampling);
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