tests/kms: Move Intel specific kms tests to i915 directory

As KMS tests on IGT are officially supported on multiple SoCs
and there is an active development on it. So, KMS tests are
meant to be generic and if we need to test few things specific
to Intel, we can use igt_require_intel(). But if the whole test
is Intel specific, then the best place for the test would be
tests/i915.

This patch will
* Move all Intel specific kms tests to tests/i915 directory.
* Update the tests those are generic but still open the driver
  as 'drm_open_driver_master(DRIVER_INTEL);'.

V2:
* Few more tests
V3:
* Remove cleanups (will submit separate patch later)
* Move few more tests to i915 dir (Karthik)
V4:
* Move kms_big_joiner.c to i915 dir (Karthik)

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Mark Yacoub <markyacoub@chromium.org>
Cc: Petri Latvala <petri.latvala@intel.com>
Cc: Vidya Srinivas <vidya.srinivas@intel.com>
Cc: Karthik B S <karthik.b.s@intel.com>
Signed-off-by: Bhanuprakash Modem <bhanuprakash.modem@intel.com>
Reviewed-by: Mark Yacoub <markyacoub@chromium.org>
Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Reviewed-by: Karthik B S <karthik.b.s@intel.com>

1 files changed, 324 insertions, 0 deletions

diff --git a/tests/i915/kms_dsc.c b/tests/i915/kms_dsc.c
new file mode 100644
index 00000000..3e450207
--- /dev/null
+++ b/tests/i915/kms_dsc.c
@@ -0,0 +1,324 @@
+/*
+ * Copyright © 2018 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.
+ *
+ * Displayport Display Stream Compression test
+ * Until the CRC support is added this needs to be invoked with --interactive
+ * to manually verify if the test pattern is seen without corruption for each
+ * subtest.
+ *
+ * Authors:
+ * Manasi Navare <manasi.d.navare@intel.com>
+ *
+ */
+#include "igt.h"
+#include "igt_sysfs.h"
+#include <errno.h>
+#include <getopt.h>
+#include <math.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include <strings.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <signal.h>
+#include <time.h>
+#include <fcntl.h>
+#include <termios.h>
+
+/* currently dsc compression is verifying on 8bpc frame only */
+#define XRGB8888_DRM_FORMAT_MIN_BPP 8
+
+enum dsc_test_type
+{
+	test_basic_dsc_enable,
+	test_dsc_compression_bpp
+};
+
+typedef struct {
+	int drm_fd;
+	uint32_t devid;
+	igt_display_t display;
+	struct igt_fb fb_test_pattern;
+	igt_output_t *output;
+	int mode_valid;
+	drmModeEncoder *encoder;
+	int crtc;
+	int compression_bpp;
+	enum pipe pipe;
+	char conn_name[128];
+} data_t;
+
+bool force_dsc_en_orig;
+int force_dsc_restore_fd = -1;
+
+static inline void manual(const char *expected)
+{
+	igt_debug_manual_check("all", expected);
+}
+
+static void force_dsc_enable(data_t *data)
+{
+	int ret;
+
+	igt_debug ("Forcing DSC enable on %s\n", data->conn_name);
+	ret = igt_force_dsc_enable(data->drm_fd,
+				      data->output->config.connector);
+	igt_assert_f(ret > 0, "debugfs_write failed");
+}
+
+static void force_dsc_enable_bpp(data_t *data)
+{
+	int ret;
+
+	igt_debug("Forcing DSC BPP to %d on %s\n",
+		  data->compression_bpp, data->conn_name);
+	ret = igt_force_dsc_enable_bpp(data->drm_fd,
+					  data->output->config.connector,
+					  data->compression_bpp);
+	igt_assert_f(ret > 0, "debugfs_write failed");
+}
+
+static void save_force_dsc_en(data_t *data)
+{
+	force_dsc_en_orig =
+		igt_is_force_dsc_enabled(data->drm_fd,
+					 data->output->config.connector);
+	force_dsc_restore_fd =
+		igt_get_dsc_debugfs_fd(data->drm_fd,
+					  data->output->config.connector);
+	igt_assert(force_dsc_restore_fd >= 0);
+}
+
+static void restore_force_dsc_en(void)
+{
+	if (force_dsc_restore_fd < 0)
+		return;
+
+	igt_debug("Restoring DSC enable\n");
+	igt_assert(write(force_dsc_restore_fd, force_dsc_en_orig ? "1" : "0", 1) == 1);
+
+	close(force_dsc_restore_fd);
+	force_dsc_restore_fd = -1;
+}
+
+static void test_cleanup(data_t *data)
+{
+	igt_plane_t *primary;
+
+	if (data->output) {
+		primary = igt_output_get_plane_type(data->output,
+						    DRM_PLANE_TYPE_PRIMARY);
+		igt_plane_set_fb(primary, NULL);
+		igt_output_set_pipe(data->output, PIPE_NONE);
+		igt_display_commit(&data->display);
+	}
+}
+
+static void kms_dsc_exit_handler(int sig)
+{
+	restore_force_dsc_en();
+}
+
+static bool is_external_panel(drmModeConnector *connector)
+{
+	switch (connector->connector_type) {
+		case DRM_MODE_CONNECTOR_LVDS:
+		case DRM_MODE_CONNECTOR_eDP:
+		case DRM_MODE_CONNECTOR_DSI:
+		case DRM_MODE_CONNECTOR_DPI:
+			return false;
+		default:
+			return true;
+	}
+}
+
+static bool check_dsc_on_connector(data_t *data, uint32_t drmConnector)
+{
+	drmModeConnector *connector;
+	igt_output_t *output;
+
+	connector = drmModeGetConnectorCurrent(data->drm_fd,
+					       drmConnector);
+	if (connector->connection != DRM_MODE_CONNECTED)
+		return false;
+
+	output = igt_output_from_connector(&data->display, connector);
+	sprintf(data->conn_name, "%s-%d",
+		kmstest_connector_type_str(connector->connector_type),
+		connector->connector_type_id);
+
+	if (!igt_is_dsc_supported(data->drm_fd, connector)) {
+		igt_debug("DSC not supported on connector %s\n",
+			  data->conn_name);
+		return false;
+	}
+	if (is_external_panel(connector) &&
+	    !igt_is_fec_supported(data->drm_fd, connector)) {
+		igt_debug("DSC cannot be enabled without FEC on %s\n",
+			  data->conn_name);
+		return false;
+	}
+	data->output = output;
+	return true;
+}
+
+/*
+ * Re-probe connectors and do a modeset with DSC
+ *
+ */
+static void update_display(data_t *data, enum dsc_test_type test_type)
+{
+	bool enabled;
+	igt_plane_t *primary;
+
+	/* Disable the output first */
+	igt_output_set_pipe(data->output, PIPE_NONE);
+	igt_display_commit(&data->display);
+
+	igt_debug("DSC is supported on %s\n", data->conn_name);
+	save_force_dsc_en(data);
+	force_dsc_enable(data);
+	if (test_type == test_dsc_compression_bpp) {
+		igt_debug("Trying to set BPP to %d\n", data->compression_bpp);
+		force_dsc_enable_bpp(data);
+	}
+
+	igt_output_set_pipe(data->output, data->pipe);
+	primary = igt_output_get_plane_type(data->output,
+					    DRM_PLANE_TYPE_PRIMARY);
+
+	/* Now set the output to the desired mode */
+	igt_plane_set_fb(primary, &data->fb_test_pattern);
+	igt_display_commit(&data->display);
+
+	/*
+	 * Until we have CRC check support, manually check if RGB test
+	 * pattern has no corruption.
+	 */
+	manual("RGB test pattern without corruption");
+
+	enabled = igt_is_dsc_enabled(data->drm_fd,
+					data->output->config.connector);
+	restore_force_dsc_en();
+	if (test_type == test_dsc_compression_bpp) {
+		igt_debug("Rest compression BPP \n");
+		data->compression_bpp = 0;
+		force_dsc_enable_bpp(data);
+	}
+
+	igt_assert_f(enabled,
+		     "Default DSC enable failed on Connector: %s Pipe: %s\n",
+		     data->conn_name,
+		     kmstest_pipe_name(data->pipe));
+}
+
+static void run_test(data_t *data, enum dsc_test_type test_type)
+{
+	enum pipe pipe;
+	char test_name[10];
+	drmModeModeInfo *mode = igt_output_get_mode(data->output);
+
+	igt_create_pattern_fb(data->drm_fd, mode->hdisplay,
+			      mode->vdisplay,
+			      DRM_FORMAT_XRGB8888,
+			      DRM_FORMAT_MOD_NONE,
+			      &data->fb_test_pattern);
+
+	for_each_pipe(&data->display, pipe) {
+		uint32_t devid = intel_get_drm_devid(data->drm_fd);
+
+		if (data->output->config.connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort &&
+		    pipe == PIPE_A && IS_GEN11(devid)) {
+			igt_debug("DSC not supported on Pipe A on external DP in Gen11 platforms\n");
+			continue;
+		}
+
+		snprintf(test_name, sizeof(test_name), "-%dbpp", data->compression_bpp);
+		if (igt_pipe_connector_valid(pipe, data->output)) {
+			data->pipe = pipe;
+
+			igt_dynamic_f("%s-pipe-%s%s", data->output->name,
+					kmstest_pipe_name(pipe),
+					(test_type == test_dsc_compression_bpp) ?
+					 test_name : "")
+				update_display(data, test_type);
+		}
+
+		if (test_type == test_dsc_compression_bpp)
+			break;
+	}
+
+	igt_remove_fb(data->drm_fd, &data->fb_test_pattern);
+}
+
+igt_main
+{
+	data_t data = {};
+	drmModeRes *res;
+	drmModeConnector *connector = NULL;
+	int i, j;
+	igt_fixture {
+		data.drm_fd = drm_open_driver_master(DRIVER_INTEL);
+		data.devid = intel_get_drm_devid(data.drm_fd);
+		kmstest_set_vt_graphics_mode();
+		igt_install_exit_handler(kms_dsc_exit_handler);
+		igt_display_require(&data.display, data.drm_fd);
+		igt_require(res = drmModeGetResources(data.drm_fd));
+	}
+	igt_subtest_with_dynamic("basic-dsc-enable") {
+		for (j = 0; j < res->count_connectors; j++) {
+			if (!check_dsc_on_connector(&data, res->connectors[j]))
+				continue;
+			run_test(&data, test_basic_dsc_enable);
+		}
+	}
+	/* currently we are validating compression bpp on XRGB8888 format only */
+	igt_subtest_with_dynamic("XRGB8888-dsc-compression") {
+		uint32_t bpp_list[] = {
+			XRGB8888_DRM_FORMAT_MIN_BPP,
+			(XRGB8888_DRM_FORMAT_MIN_BPP  +
+			 (XRGB8888_DRM_FORMAT_MIN_BPP * 3) - 1) / 2,
+			(XRGB8888_DRM_FORMAT_MIN_BPP * 3) - 1
+		};
+
+		igt_require(intel_display_ver(data.devid) >= 13);
+
+		for (j = 0; j < res->count_connectors; j++) {
+			if (!check_dsc_on_connector(&data, res->connectors[j]))
+				continue;
+
+			for (i = 0; i < ARRAY_SIZE(bpp_list); i++) {
+				data.compression_bpp = bpp_list[i];
+				run_test(&data, test_dsc_compression_bpp);
+			}
+		}
+	}
+
+	igt_fixture {
+		if (connector)
+			drmModeFreeConnector(connector);
+		test_cleanup(&data);
+		drmModeFreeResources(res);
+		close(data.drm_fd);
+		igt_display_fini(&data.display);
+	}
+}