[Intel-gfx] [PATCH] tests: Add test for pipe B and C interactions in IVB

[Ander Conselvan de Oliveira]

This actually only works if the machine is setup properly. It requires
that:

- the hardware to have at least two connected outpus;
- the defatult mode on those outputs needs to be big enough;
- the attached monitors need to support 10 bpc.

This might generate spurius results if the connected output doesn't support
10bpc or a large enough mode.

---
I used this to test the changes that affect pipe B and C interactions on
IVB. I'm not really sure how to turn into a proper igt test though, because
of the requirements on the outputs in use.


---
 tests/Makefile.sources    |   1 +
 tests/kms_pipe_b_c_dpms.c | 173 ++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 174 insertions(+)
 create mode 100644 tests/kms_pipe_b_c_dpms.c

diff --git a/tests/Makefile.sources b/tests/Makefile.sources
index 9ab0ff4..9e43a64 100644
--- a/tests/Makefile.sources
+++ b/tests/Makefile.sources
@@ -73,6 +73,7 @@ TESTS_progs_M = \
 	kms_nuclear \
 	kms_pipe_crc_basic \
 	kms_plane \
+	kms_pipe_b_c_dpms \
 	kms_psr_sink_crc \
 	kms_render \
 	kms_rotation_crc \
diff --git a/tests/kms_pipe_b_c_dpms.c b/tests/kms_pipe_b_c_dpms.c
new file mode 100644
index 0000000..a5ed761
--- /dev/null
+++ b/tests/kms_pipe_b_c_dpms.c
@@ -0,0 +1,173 @@
+/*
+ * 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.
+ *
+ * Authors:
+ *   Ander Conselvan de Oliveira <ander.conselvan.de.oliveira at intel.com>
+ */
+
+#include "drmtest.h"
+#include "igt_kms.h"
+#include "intel_chipset.h"
+
+typedef struct {
+	int drm_fd;
+	igt_display_t display;
+} data_t;
+
+static int
+set_mode_on_pipe(data_t *data, enum pipe pipe, igt_output_t *output, int bpc)
+{
+	igt_plane_t *primary;
+	drmModeModeInfo *mode;
+	struct igt_fb fb;
+	int fb_id;
+	uint32_t format;
+
+	if (bpc == 8)
+		format = DRM_FORMAT_XRGB8888;
+	else if (bpc == 10)
+		format = DRM_FORMAT_XRGB2101010;
+	else
+		igt_fail(1);
+
+	igt_output_set_pipe(output, pipe);
+
+	/* FIXME: we need a big mode */
+	mode = igt_output_get_mode(output);
+	primary = igt_output_get_plane(output, 0);
+
+	fb_id = igt_create_color_fb(data->drm_fd,
+				    mode->hdisplay, mode->vdisplay,
+				    format, I915_TILING_NONE,
+				    1.0, 1.0, 1.0, &fb);
+	igt_assert(fb_id >= 0);
+
+	igt_plane_set_fb(primary, &fb);
+	return igt_display_try_commit2(&data->display, COMMIT_LEGACY);
+}
+
+static int
+set_big_mode_on_pipe(data_t *data, enum pipe pipe, igt_output_t *output)
+{
+	return set_mode_on_pipe(data, pipe, output, 10);
+}
+
+static int
+set_normal_mode_on_pipe(data_t *data, enum pipe pipe, igt_output_t *output)
+{
+	return set_mode_on_pipe(data, pipe, output, 8);
+}
+
+static void
+find_outputs(data_t *data, igt_output_t **output1, igt_output_t **output2)
+{
+	int count = 0;
+	igt_output_t *output;
+
+	*output1 = NULL;
+	*output2 = NULL;
+
+	for_each_connected_output(&data->display, output) {
+		if (!(*output1))
+			*output1 = output;
+		else if (!(*output2))
+			*output2 = output;
+
+		igt_output_set_pipe(output, PIPE_ANY);
+		count++;
+	}
+
+	igt_skip_on_f(count < 2, "Not enough connected outputs\n");
+}
+
+static void
+test_dpms(data_t *data)
+{
+	igt_output_t *output1, *output2;
+	int ret;
+
+	find_outputs(data, &output1, &output2);
+
+	igt_info("Pipe %s will use connector %s\n",
+		 kmstest_pipe_name(PIPE_B), igt_output_name(output1));
+	igt_info("Pipe %s will use connector %s\n",
+		 kmstest_pipe_name(PIPE_C), igt_output_name(output2));
+
+	ret = set_big_mode_on_pipe(data, PIPE_B, output1);
+	igt_assert(ret == 0);
+
+	kmstest_set_connector_dpms(data->drm_fd, output1->config.connector, DRM_MODE_DPMS_OFF);
+
+	ret = set_big_mode_on_pipe(data, PIPE_C, output2);
+	igt_assert(ret != 0);
+}
+
+static void
+test_lane_reduction(data_t *data)
+{
+	igt_output_t *output1, *output2;
+	int ret;
+
+	find_outputs(data, &output1, &output2);
+
+	igt_info("Pipe %s will use connector %s\n",
+		 kmstest_pipe_name(PIPE_B), igt_output_name(output1));
+	igt_info("Pipe %s will use connector %s\n",
+		 kmstest_pipe_name(PIPE_C), igt_output_name(output2));
+
+	ret = set_big_mode_on_pipe(data, PIPE_B, output1);
+	igt_assert(ret == 0);
+
+	ret = set_normal_mode_on_pipe(data, PIPE_B, output1);
+	igt_assert(ret == 0);
+
+	ret = set_normal_mode_on_pipe(data, PIPE_C, output2);
+	igt_assert(ret == 0);
+}
+
+static data_t data;
+igt_main
+{
+	int devid;
+
+	igt_skip_on_simulation();
+
+	igt_fixture {
+		data.drm_fd = drm_open_any_master();
+		devid = intel_get_drm_devid(data.drm_fd);
+
+		kmstest_set_vt_graphics_mode();
+		igt_display_init(&data.display, data.drm_fd);
+	}
+
+	igt_skip_on(!IS_IVYBRIDGE(devid));
+
+	igt_subtest("pipe-B-dpms-off-modeset-pipe-C")
+		test_dpms(&data);
+
+	igt_subtest("pipe-B-double-modeset-then-modeset-pipe-C")
+		test_lane_reduction(&data);
+
+	igt_fixture {
+		igt_display_fini(&data.display);
+	}
+}
-- 
2.1.0