| /* |
| * 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; |
| 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); |
| igt_assert(ret != 0); |
| |
| 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; |
| } |
| |
| 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); |
| |
| if (perf1 == perf2) { |
| fprintf(stderr, "Unable to enter PSR state again\n"); |
| igt_fail(1); |
| } |
| } |