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Thu, 13 Oct 2022 09:19:20 -0400 (EDT) From: Maxime Ripard Date: Thu, 13 Oct 2022 15:18:51 +0200 Subject: [PATCH v5 07/22] drm/client: Add some tests for drm_connector_pick_cmdline_mode() MIME-Version: 1.0 Message-Id: <20220728-rpi-analog-tv-properties-v5-7-d841cc64fe4b@cerno.tech> References: <20220728-rpi-analog-tv-properties-v5-0-d841cc64fe4b@cerno.tech> In-Reply-To: <20220728-rpi-analog-tv-properties-v5-0-d841cc64fe4b@cerno.tech> To: Karol Herbst , Jani Nikula , Tvrtko Ursulin , Daniel Vetter , Maarten Lankhorst , David Airlie , Joonas Lahtinen , Lyude Paul , Maxime Ripard , Emma Anholt , Chen-Yu Tsai , Samuel Holland , Ben Skeggs , Thomas Zimmermann , Rodrigo Vivi , Jernej Skrabec Cc: =?unknown-8bit?q?Dom_Cobley_=3Cdom=40raspberrypi=2Ecom=3E=2C_Maxime_Ripa?= =?unknown-8bit?q?rd_=3Cmaxime=40cerno=2Etech=3E=2C_linux-sunxi=40lists=2Eli?= =?unknown-8bit?q?nux=2Edev=2C?= =?unknown-8bit?q?_Dave_Stevenson_=3Cdave=2Estevenson=40raspberrypi=2Ecom=3E?= =?unknown-8bit?q?=2C_Noralf_Tr=C3=B8nnes_=3Cnoralf=40tronnes=2Eorg=3E=2C_in?= =?unknown-8bit?q?tel-gfx=40lists=2Efreedesktop=2Eorg=2C?= =?unknown-8bit?q?_linux-kernel=40vger=2Ekernel=2Eorg=2C_nouveau=40lists=2Efr?= =?unknown-8bit?q?eedesktop=2Eorg=2C_Geert_Uytterhoeven_=3Cgeert=40linux-m68?= =?unknown-8bit?q?k=2Eorg=3E=2C?= =?unknown-8bit?q?_linux-arm-kernel=40lists=2Einfradead=2Eorg=2C_Mateusz_Kwia?= =?unknown-8bit?q?tkowski_=3Ckfyatek+publicgit=40gmail=2Ecom=3E=2C?= =?unknown-8bit?q?_dri-devel=40lists=2Efreedesktop=2Eorg=2C_Hans_de_Goede_=3C?= =?unknown-8bit?q?hdegoede=40redhat=2Ecom=3E=2C_Phil_Elwell_=3Cphil=40raspbe?= =?unknown-8bit?q?rrypi=2Ecom=3E?= X-Mailer: b4 0.11.0-dev-7da52 X-Developer-Signature: v=1; a=openpgp-sha256; l=4426; i=maxime@cerno.tech; h=from:subject:message-id; bh=pxNcs3E41AFkDKtgV8g7K8QZrGOQYdi/UDjQnH5rGdA=; b=owGbwMvMwCX2+D1vfrpE4FHG02pJDMkeAm6Tfm8SPsdsK8ke9mhdauTM2L5nyl+jbB7JymSWdtZP fOPbUcrCIMbFICumyBIjbL4k7tSs151sfPNg5rAygQxh4OIUgIkYeDP8szb92H5ky0qnoCt3DMpVFB WNg1lVXntyhTGwqWYe5JT7yvA/+c72Mpd3/+wOr9w8cYpAoZrFhGsVm38c+rFn771lu/8bcgIA X-Developer-Key: i=maxime@cerno.tech; a=openpgp; fpr=BE5675C37E818C8B5764241C254BCFC56BF6CE8D X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221013_061922_217331_13B6B055 X-CRM114-Status: GOOD ( 14.36 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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. Signed-off-by: Maxime Ripard Acked-by: Noralf Trønnes --- Changes in v5: - Removed useless (for now) count and modes intermediate variables in get_modes - Switched to kunit assertions in test init, and to KUNIT_ASSERT_NOT_NULL instead of KUNIT_ASSERT_PTR_NE(..., NULL) Changes in v4: - Removed MODULE macros --- drivers/gpu/drm/drm_client_modeset.c | 4 + drivers/gpu/drm/tests/drm_client_modeset_test.c | 99 +++++++++++++++++++++++++ 2 files changed, 103 insertions(+) diff --git a/drivers/gpu/drm/drm_client_modeset.c b/drivers/gpu/drm/drm_client_modeset.c index bbc535cc50dd..d553e793e673 100644 --- a/drivers/gpu/drm/drm_client_modeset.c +++ b/drivers/gpu/drm/drm_client_modeset.c @@ -1237,3 +1237,7 @@ int drm_client_modeset_dpms(struct drm_client_dev *client, int mode) return ret; } EXPORT_SYMBOL(drm_client_modeset_dpms); + +#ifdef CONFIG_DRM_KUNIT_TEST +#include "tests/drm_client_modeset_test.c" +#endif 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..af7e7fcda11e --- /dev/null +++ b/drivers/gpu/drm/tests/drm_client_modeset_test.c @@ -0,0 +1,99 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2022 Maxime Ripard + */ + +#include + +#include +#include +#include +#include +#include +#include + +#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, "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_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_pick_cmdline_tests[] = { + KUNIT_CASE(drm_pick_cmdline_res_1920_1080_60), + {} +}; + +static struct kunit_suite drm_pick_cmdline_test_suite = { + .name = "drm_pick_cmdline", + .init = drm_client_modeset_test_init, + .test_cases = drm_pick_cmdline_tests +}; + +kunit_test_suite(drm_pick_cmdline_test_suite);