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tests: pm_psr

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Check on debugfs if PSR is supported by panel and matching all conditions in
hardware. In this case PSR must be enabled and performance counting increasing

v2: check if performance counter is really increasing.
v3: respect new naming convention

Signed-off-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
This commit is contained in:
Rodrigo Vivi 2013-10-01 15:12:37 -03:00
parent 27f1a7dd4b
commit ad648d9deb
2 changed files with 103 additions and 0 deletions
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1
tests/Makefile.am
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@ -120,6 +120,7 @@ TESTS_progs = \
gen3_render_tiledx_blits \
gen3_render_tiledy_blits \
prime_udl \
pm_psr \
pm_rc6_residency \
pm_rps \
$(NULL)

102
tests/pm_psr.c Normal file
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@ -0,0 +1,102 @@
/*
* 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 "drmtest.h"
#define SLEEP_DURATION 5000 // in milliseconds
static int get_perf(const char *path)
{
int ret, perf;
bool sink, source, enabled;
FILE *file;
char str[4];
file = fopen(path, "r");
if (file == NULL) {
fprintf(stderr, "Couldn't open %s (%d)\n", path, errno);
abort();
}
ret = fscanf(file, "Sink_Support: %s\n", str);
if (ret == 0)
igt_skip("i915_edp_psr_status format not supported by this test case\n");
sink = strcmp(str, "yes") == 0;
ret = fscanf(file, "Source_OK: %s\n", str);
igt_assert(ret != 0);
source = strcmp(str, "yes") == 0;
ret = fscanf(file, "Enabled: %s\n", str);
igt_assert(ret != 0);
enabled = strcmp(str, "yes") == 0;
ret = fscanf(file, "Performance_Counter: %i", &perf);
if (!sink)
igt_skip("This panel does not support PSR.\n");
if (!source)
igt_skip("This Hardware does not support or isn't ready for PSR\n");
if (!enabled) {
fprintf(stderr, "PSR should be enabled\n");
igt_fail(1);
}
if (perf == 0) {
fprintf(stderr, "PSR state never achieved\n");
igt_fail(1);
}
fclose(file);
return perf;
}
int main(int argc, char *argv[])
{
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);
if (perf1 == perf2) {
fprintf(stderr, "Unable to enter PSR state again\n");
igt_fail(1);
}
igt_success();
}