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author | Maxime Ripard <maxime@cerno.tech> | 2022-11-14 14:00:27 +0100 |
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committer | Maxime Ripard <maxime@cerno.tech> | 2022-11-15 10:08:37 +0100 |
commit | 8fc0380f6ba7e9414c96a695a8c03e2ac31d1b0f (patch) | |
tree | e8331f0eca9fff5e94b7fdc1508f4fc9830bf6f4 /drivers/gpu/drm/tests/drm_client_modeset_test.c | |
parent | 44a3928324e9757f7c321535756730be948941c2 (diff) | |
download | linux-stable-8fc0380f6ba7e9414c96a695a8c03e2ac31d1b0f.tar.gz linux-stable-8fc0380f6ba7e9414c96a695a8c03e2ac31d1b0f.tar.bz2 linux-stable-8fc0380f6ba7e9414c96a695a8c03e2ac31d1b0f.zip |
drm/client: Add some tests for drm_connector_pick_cmdline_mode()
drm_connector_pick_cmdline_mode() is in charge of finding a proper
drm_display_mode from the definition we got in the video= command line
argument.
Let's add some unit tests to make sure we're not getting any regressions
there.
Acked-by: Noralf Trønnes <noralf@tronnes.org>
Tested-by: Mateusz Kwiatkowski <kfyatek+publicgit@gmail.com>
Link: https://lore.kernel.org/r/20220728-rpi-analog-tv-properties-v9-8-24b168e5bcd5@cerno.tech
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Diffstat (limited to 'drivers/gpu/drm/tests/drm_client_modeset_test.c')
-rw-r--r-- | drivers/gpu/drm/tests/drm_client_modeset_test.c | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/drivers/gpu/drm/tests/drm_client_modeset_test.c b/drivers/gpu/drm/tests/drm_client_modeset_test.c new file mode 100644 index 000000000000..558c098b0384 --- /dev/null +++ b/drivers/gpu/drm/tests/drm_client_modeset_test.c @@ -0,0 +1,100 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2022 Maxime Ripard <mripard@kernel.org> + */ + +#include <kunit/test.h> + +#include <drm/drm_connector.h> +#include <drm/drm_edid.h> +#include <drm/drm_drv.h> +#include <drm/drm_modes.h> +#include <drm/drm_modeset_helper_vtables.h> +#include <drm/drm_probe_helper.h> + +#include "drm_kunit_helpers.h" + +struct drm_client_modeset_test_priv { + struct drm_device *drm; + struct drm_connector connector; +}; + +static int drm_client_modeset_connector_get_modes(struct drm_connector *connector) +{ + return drm_add_modes_noedid(connector, 1920, 1200); +} + +static const struct drm_connector_helper_funcs drm_client_modeset_connector_helper_funcs = { + .get_modes = drm_client_modeset_connector_get_modes, +}; + +static const struct drm_connector_funcs drm_client_modeset_connector_funcs = { +}; + +static int drm_client_modeset_test_init(struct kunit *test) +{ + struct drm_client_modeset_test_priv *priv; + int ret; + + priv = kunit_kzalloc(test, sizeof(*priv), GFP_KERNEL); + KUNIT_ASSERT_NOT_NULL(test, priv); + + test->priv = priv; + + priv->drm = drm_kunit_device_init(test, DRIVER_MODESET, "drm-client-modeset-test"); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv->drm); + + ret = drmm_connector_init(priv->drm, &priv->connector, + &drm_client_modeset_connector_funcs, + DRM_MODE_CONNECTOR_Unknown, + NULL); + KUNIT_ASSERT_EQ(test, ret, 0); + + drm_connector_helper_add(&priv->connector, &drm_client_modeset_connector_helper_funcs); + + return 0; + +} + +static void drm_test_pick_cmdline_res_1920_1080_60(struct kunit *test) +{ + struct drm_client_modeset_test_priv *priv = test->priv; + struct drm_device *drm = priv->drm; + struct drm_connector *connector = &priv->connector; + struct drm_cmdline_mode *cmdline_mode = &connector->cmdline_mode; + struct drm_display_mode *expected_mode, *mode; + const char *cmdline = "1920x1080@60"; + int ret; + + expected_mode = drm_mode_find_dmt(priv->drm, 1920, 1080, 60, false); + KUNIT_ASSERT_NOT_NULL(test, expected_mode); + + KUNIT_ASSERT_TRUE(test, + drm_mode_parse_command_line_for_connector(cmdline, + connector, + cmdline_mode)); + + mutex_lock(&drm->mode_config.mutex); + ret = drm_helper_probe_single_connector_modes(connector, 1920, 1080); + mutex_unlock(&drm->mode_config.mutex); + KUNIT_ASSERT_GT(test, ret, 0); + + mode = drm_connector_pick_cmdline_mode(connector); + KUNIT_ASSERT_NOT_NULL(test, mode); + + KUNIT_EXPECT_TRUE(test, drm_mode_equal(expected_mode, mode)); +} + + +static struct kunit_case drm_test_pick_cmdline_tests[] = { + KUNIT_CASE(drm_test_pick_cmdline_res_1920_1080_60), + {} +}; + +static struct kunit_suite drm_test_pick_cmdline_test_suite = { + .name = "drm_test_pick_cmdline", + .init = drm_client_modeset_test_init, + .test_cases = drm_test_pick_cmdline_tests +}; + +kunit_test_suite(drm_test_pick_cmdline_test_suite); |