1 files changed, 86 insertions, 0 deletions
diff --git a/tests/pm_psr.c b/tests/pm_psr.c
new file mode 100644
index 00000000..3ab7e7a0
--- /dev/null
+++ b/tests/pm_psr.c
@@ -0,0 +1,86 @@
+/*
+ * 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");
+}