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/*
* Copyright (c) 2013 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*
* Authors:
* Rodrigo Vivi <rodrigo.vivi@intel.com>
*/
#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include "drmtest.h"
#define SLEEP_DURATION 5000 // in milliseconds
static int get_perf(const char *path)
{
int ret, perf;
FILE *file;
char str[4];
file = fopen(path, "r");
igt_assert(file);
ret = fscanf(file, "Sink_Support: %s\n", str);
igt_skip_on_f(ret == 0,
"i915_edp_psr_status format not supported by this test case\n");
igt_require(strcmp(str, "yes") == 0);
ret = fscanf(file, "Source_OK: %s\n", str);
igt_assert(ret != 0);
igt_require(strcmp(str, "yes") == 0);
ret = fscanf(file, "Enabled: %s\n", str);
igt_assert(ret != 0);
igt_assert(strcmp(str, "yes") == 0);
ret = fscanf(file, "Performance_Counter: %i", &perf);
igt_assert(ret != 0);
igt_assert(perf);
fclose(file);
return perf;
}
igt_simple_main
{
int ret, perf1, perf2;
int device = drm_get_card();
char *path;
igt_skip_on_simulation();
ret = asprintf(&path, "/sys/kernel/debug/dri/%d/i915_edp_psr_status", device);
igt_assert(ret != -1);
perf1 = get_perf(path);
sleep(SLEEP_DURATION / 1000);
perf2 = get_perf(path);
igt_assert_f(perf1 != perf2,
"Unable to enter PSR state again\n");
}
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