Idleness DRRS:
By default the DRRS state will be at DRRS_HIGH_RR. When a Display
content is Idle for more than 1Sec Idleness will be declared and
DRRS_LOW_RR will be invoked. And as soon as there is a display
content change there will be a DRRS state transition as
DRRS_LOW_RR--> DRRS_HIGH_RR.
To test this Idleness DRRS IGT will probe the DRRS state at below
instances and compare with the expected state.
Instance Expected State
1. Immediately after rendering the still image DRRS_HIGH_RR
2. After a delay of 1.2Sec DRRS_LOW_RR
3. After changing the frame buffer DRRS_HIGH_RR
4. After a delay of 1.2Sec DRRS_LOW_RR
5. After changing the frame buffer DRRS_HIGH_RR
6. After a delay of 1.2Sec DRRS_LOW_RR
Signed-off-by: Ramalingam C <ramalingam.c@xxxxxxxxx>
Signed-off-by: Vandana Kannan <vandana.kannan@xxxxxxxxx>
---
tests/Makefile.sources | 1 +
tests/kms_drrs.c | 376 ++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 377 insertions(+)
create mode 100644 tests/kms_drrs.c
diff --git a/tests/Makefile.sources b/tests/Makefile.sources
index 74deec3..2305cd4 100644
--- a/tests/Makefile.sources
+++ b/tests/Makefile.sources
@@ -65,6 +65,7 @@ TESTS_progs_M = \
gem_write_read_ring_switch \
kms_addfb \
kms_cursor_crc \
+ kms_drrs \
kms_fbc_crc \
kms_flip \
kms_flip_event_leak \
diff --git a/tests/kms_drrs.c b/tests/kms_drrs.c
new file mode 100644
index 0000000..91bda5c
--- /dev/null
+++ b/tests/kms_drrs.c
@@ -0,0 +1,376 @@
+/*
+ * Copyright © 2015 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.
+ *
+ */
+
+#include "drmtest.h"
+#include "igt_debugfs.h"
+#include "igt_kms.h"
+#include "intel_chipset.h"
+#include "intel_batchbuffer.h"
+#include "ioctl_wrappers.h"
+#include <time.h>
+
+IGT_TEST_DESCRIPTION(
+"Performs write operations and then waits for DRRS to invoke the"
+"Low Refresh Rate and then disturbs the contents of the screen once"
+"again hence DRRS revert back to High Refresh Rate(Default).");
+
+#define DRRS_STATUS_BYTES_CNT 1000
+
+typedef struct {
+ int drm_fd;
+ uint32_t devid;
+ uint32_t handle[2];
+ igt_display_t display;
+ igt_output_t *output;
+ enum pipe pipe;
+ igt_plane_t *primary;
+ struct igt_fb fb[2];
+ uint32_t fb_id[2];
+} data_t;
+
+struct __attribute__((packed, aligned(16))) fb_status {
+ bool rendered;
+ unsigned fb_bits;
+};
+
+/*
+ * print_date_and_time : Func to print the date and time
+ */
+static void print_date_and_time(void)
+{
+ time_t curtime;
+ struct tm *loctime;
+
+ curtime = time(NULL);
+ loctime = localtime(&curtime);
+ fputs (asctime (loctime), stdout);
+}
+
+/*
+ * read_drrs_status : Func to read the DRRS status from debugfs
+ */
+static bool read_drrs_status(data_t *data, char *str)
+{
+ FILE *status;
+ int cnt;
+
+ status = igt_debugfs_fopen("i915_drrs_status", "r");
+ igt_assert(status);
+
+ cnt = fread(str, DRRS_STATUS_BYTES_CNT - 1, 1, status);
+ if (!cnt) {
+ if (!feof(status)) {
+ igt_info("Err %d at fread\n", ferror(status));
+ return false;
+ }
+ clearerr(status);
+ }
+
+ fclose(status);
+ return true;
+}
+
+/*
+ * is_drrs_enabled : Func to check for DRRS support
+ */
+static bool is_drrs_enabled(data_t *data)
+{
+ char str[DRRS_STATUS_BYTES_CNT] = {};
+
+ read_drrs_status(data, str);
+ return strstr(str, "DRRS Supported: Yes") != NULL;
+}
+
+/*
+ * print_drrs_status : Func to print the DRRS status from the debugfs
+ */
+static bool print_drrs_status(data_t *data)
+{
+ char str[DRRS_STATUS_BYTES_CNT] = {};
+
+ read_drrs_status(data, str);
+ igt_info("%s\n", str);
+
+ return true;
+}
+
+/*
+ * is_drrs_state : Func to check the DRRS state
+ */
+static bool is_drrs_state(data_t *data, const char str[15])
+{
+ char status[DRRS_STATUS_BYTES_CNT] = {};
+
+ read_drrs_status(data, status);
+ return strstr(status, str) != NULL;
+
+}
+
+static bool prepare_crtc(data_t *data)
+{
+ igt_display_t *display = &data->display;
+ igt_output_t *output = data->output;
+
+ /* select the pipe we want to use */
+ igt_output_set_pipe(output, data->pipe);
+ igt_display_commit(display);
+
+ if (!output->valid) {
+ igt_output_set_pipe(output, PIPE_ANY);
+ igt_display_commit(display);
+ return false;
+ }
+
+ return true;
+}
+
+/*
+ * execute_test:
+ *
+ * This function creates two different Framebuffer fb0, fb1
+ * and apply them in the interval of 1.2Sec. So between FB change
+ * DRRS should toggle from DRRS_HIGH_RR -> DRRS_LOW_RR.
+ * And on next FB change DRRS_LOW_RR -> DRRS_HIGH_RR.
+ *
+ * These expected transistions are verified using the kernel debugfs
+ */
+static bool execute_test(data_t *data)
+{
+ igt_display_t *display = &data->display;
+ igt_output_t *output = data->output;
+ drmModeModeInfo *mode;
+ bool test_failed = false;
+
+ data->primary = igt_output_get_plane(data->output, IGT_PLANE_PRIMARY);
+ mode = igt_output_get_mode(data->output);
+
+ data->fb_id[0] = igt_create_color_fb(data->drm_fd, mode->hdisplay, mode->vdisplay,
+ DRM_FORMAT_XRGB8888,
+ I915_TILING_X,
+ 0.0, 100.1, 0.0, &data->fb[0]);
+ igt_assert(data->fb_id[0]);
+ data->fb_id[1] = igt_create_color_fb(data->drm_fd, mode->hdisplay, mode->vdisplay,
+ DRM_FORMAT_XRGB8888,
+ I915_TILING_X,
+ 100.1, 0.0, 0.0,
+ &data->fb[1]);
+ igt_assert(data->fb_id[1]);
+
+ data->handle[0] = data->fb[0].gem_handle;
+ data->handle[1] = data->fb[1].gem_handle;
+
+ /* scanout = fb[1] */
+ igt_plane_set_fb(data->primary, &data->fb[1]);
+ igt_display_commit(display);
+
+ if (!is_drrs_enabled(data)) {
+ igt_info("DRRS not enabled\n");
+
+ igt_plane_set_fb(data->primary, NULL);
+ igt_output_set_pipe(output, PIPE_ANY);
+ igt_display_commit(display);
+
+ igt_remove_fb(data->drm_fd, &data->fb[0]);
+ igt_remove_fb(data->drm_fd, &data->fb[1]);
+ return false;
+ }
+
+ igt_wait_for_vblank(data->drm_fd, data->pipe);
+
+
+ if (is_drrs_state(data, "DRRS_HIGH_RR")) {
+ igt_info("Expected DRRS_HIGH_RR : PASSED\n");
+ } else {
+ igt_info("Expected DRRS_HIGH_RR : FAILED\n");
+ test_failed = true;
+ }
+
+ /* 1.2Sec to Enter the Idleness */
+ usleep(1200000);
+
+ if (is_drrs_state(data, "DRRS_LOW_RR")) {
+ igt_info("Expected DRRS_LOW_RR : PASSED\n");
+ } else {
+ igt_info("Expected DRRS_LOW_RR : FAILED\n");
+ test_failed = true;
+ }
+
+ igt_wait_for_vblank(data->drm_fd, data->pipe);
+
+ /* scanout = fb[0] */
+ igt_plane_set_fb(data->primary, &data->fb[0]);
+ igt_display_commit(display);
+
+ igt_wait_for_vblank(data->drm_fd, data->pipe);
+
+ if (is_drrs_state(data, "DRRS_HIGH_RR")) {
+ igt_info("Expected DRRS_HIGH_RR : PASSED\n");
+ } else {
+ igt_info("Expected DRRS_HIGH_RR : FAILED\n");
+ test_failed = true;
+ }
+
+ /* 1.2Sec to Enter the Idleness */
+ usleep(1200000);
+
+ if (is_drrs_state(data, "DRRS_LOW_RR")) {
+ igt_info("Expected DRRS_LOW_RR : PASSED\n");
+ } else {
+ igt_info("Expected DRRS_LOW_RR : FAILED\n");
+ test_failed = true;
+ }
+
+ igt_wait_for_vblank(data->drm_fd, data->pipe);
+
+ igt_plane_set_fb(data->primary, &data->fb[1]);
+ igt_display_commit(display);
+
+ igt_wait_for_vblank(data->drm_fd, data->pipe);
+
+ if (is_drrs_state(data, "DRRS_HIGH_RR")) {
+ igt_info("Expected DRRS_HIGH_RR : PASSED\n");
+ } else {
+ igt_info("Expected DRRS_HIGH_RR : FAILED\n");
+ test_failed = true;
+ }
+
+ /* 1.2Sec to Enter the Idleness */
+ usleep(1200000);
+
+ if (is_drrs_state(data, "DRRS_LOW_RR")) {
+ igt_info("Expected DRRS_LOW_RR : PASSED\n");
+ } else {
+ igt_info("Expected DRRS_LOW_RR : FAILED\n");
+ test_failed = true;
+ }
+
+ igt_wait_for_vblank(data->drm_fd, data->pipe);
+
+ igt_assert(!test_failed);
+ return true;
+}
+
+static void finish_crtc(data_t *data)
+{
+ igt_plane_set_fb(data->primary, NULL);
+ igt_output_set_pipe(data->output, PIPE_ANY);
+ igt_display_commit(&data->display);
+
+ igt_remove_fb(data->drm_fd, &data->fb[0]);
+ igt_remove_fb(data->drm_fd, &data->fb[1]);
+}
+
+static void reset_display(data_t *data)
+{
+ igt_display_t *display = &data->display;
+
+ for_each_connected_output(display, data->output) {
+ if (data->output->valid) {
+ data->primary = igt_output_get_plane(data->output,
+ IGT_PLANE_PRIMARY);
+ igt_plane_set_fb(data->primary, NULL);
+ }
+ igt_output_set_pipe(data->output, PIPE_ANY);
+ }
+}
+
+static void run_test(data_t *data)
+{
+ igt_display_t *display = &data->display;
+ int valid_tests = 0;
+
+ reset_display(data);
+
+ for_each_connected_output(display, data->output) {
+ for_each_pipe(display, data->pipe) {
+ if (!prepare_crtc(data))
+ continue;
+
+ igt_info("Beginning %s on pipe %s, connector %s\n",
+ igt_subtest_name(),
+ kmstest_pipe_name(data->pipe),
+ igt_output_name(data->output));
+
+ if (!execute_test(data)) {
+ igt_info("%s on pipe %s, connector %s: SKIPPED\n",
+ igt_subtest_name(),
+ kmstest_pipe_name(data->pipe),
+ igt_output_name(data->output));
+ continue;
+ }
+
+ valid_tests++;
+
+ igt_info("%s on pipe %s, connector %s: PASSED\n",
+ igt_subtest_name(),
+ kmstest_pipe_name(data->pipe),
+ igt_output_name(data->output));
+
+ finish_crtc(data);
+ }
+ }
+
+ igt_require_f(valid_tests, "no valid crtc/connector combinations found\n");
+}
+
+igt_main
+{
+ data_t data = {};
+
+ igt_skip_on_simulation();
+
+ igt_fixture {
+ char buf[64];
+ int cnt;
+ FILE *status;
+
+ data.drm_fd = drm_open_any_master();
+
+ data.devid = intel_get_drm_devid(data.drm_fd);
+
+ status = igt_debugfs_fopen("i915_drrs_status", "r");
+ igt_require_f(status, "No i915_drrs_status found\n");
+ cnt = fread(buf, sizeof(buf), 1, status);
+ if (!cnt) {
+ igt_info("fread failed\n");
+ return;
+ }
+ fclose(status);
+ buf[sizeof(buf) - 1] = '\0';
+ igt_require_f(!strstr(buf, "disabled"),
+ "DRRS not supported:check VBT/panel caps\n");
+
+ /* Check if the DRRS is supported.
+ * If yes call the Idleness DRRS test */
+
+ igt_display_init(&data.display, data.drm_fd);
+ }
+
+ igt_subtest_f("Idleness DRRS")
+ run_test(&data);
+
+ igt_fixture {
+ igt_display_fini(&data.display);
+ }
+}
--
1.7.9.5
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