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108 lines
2.9 KiB
108 lines
2.9 KiB
/*
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* Copyright © 2019 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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* Authors: Simon Ser <simon.ser@intel.com>
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*/
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#include "config.h"
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#include <stdbool.h>
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#include "igt_core.h"
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#include "igt_kms.h"
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#include "igt_edid.h"
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static const unsigned char edid_header[] = {
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0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00
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};
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/**
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* Sanity check the header of the base EDID block.
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*/
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static bool edid_header_is_valid(const unsigned char *raw_edid)
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{
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size_t i;
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for (i = 0; i < sizeof(edid_header); i++)
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if (raw_edid[i] != edid_header[i])
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return false;
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return true;
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}
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/**
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* Sanity check the checksum of the EDID block.
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*/
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static bool edid_block_checksum(const unsigned char *raw_edid)
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{
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size_t i;
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unsigned char csum = 0;
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for (i = 0; i < EDID_BLOCK_SIZE; i++) {
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csum += raw_edid[i];
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}
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return csum == 0;
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}
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typedef const struct edid *(*get_edid_func)(void);
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igt_simple_main
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{
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const struct {
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const char *desc;
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get_edid_func f;
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size_t exts;
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} funcs[] = {
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{ "base", igt_kms_get_base_edid, 0 },
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{ "alt", igt_kms_get_alt_edid, 0 },
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{ "hdmi_audio", igt_kms_get_hdmi_audio_edid, 1 },
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{ "4k", igt_kms_get_4k_edid, 1 },
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{ "3d", igt_kms_get_3d_edid, 1 },
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{0},
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}, *f;
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const struct edid *edid;
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const uint8_t *raw_edid, *raw_block;
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size_t i;
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for (f = funcs; f->f; f++) {
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edid = f->f();
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raw_edid = (uint8_t *) edid;
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igt_assert_f(edid_header_is_valid(raw_edid),
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"invalid header on %s EDID", f->desc);
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/* check base edid block */
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igt_assert_f(edid_block_checksum(raw_edid),
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"checksum failed on %s EDID", f->desc);
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/* check extension blocks, if any */
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igt_assert_f(raw_edid[126] == f->exts,
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"unexpected number of extensions on %s EDID",
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f->desc);
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for (i = 0; i < f->exts; i++) {
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raw_block = raw_edid + (i + 1) * EDID_BLOCK_SIZE;
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igt_assert_f(edid_block_checksum(raw_block),
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"CEA block checksum failed on %s EDID",
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f->desc);
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}
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}
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}
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