From patchwork Thu Feb 6 18:14:34 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luca Ceresoli X-Patchwork-Id: 13963598 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A203DC021A0 for ; Thu, 6 Feb 2025 19:01:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To:In-Reply-To:References :Message-Id:Content-Transfer-Encoding:Content-Type:MIME-Version:Subject:Date: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; 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h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=EBTI6/Bcswhpw8thl+NLYiq9PLKUDYQ9vhvmnSdscmM=; b=IBixXvFRbyY/P5+MTKGjMacyLR8bGcsqgmm3KY22v1Cdo5rb6K7WZ5F8RqhTqswlBLkos/ zhyJFtk3xhdqU3oinvUwC1iBIIGjcv9cDVU0YfxcmNXBNNVMDGlCu5TzgeHCR3/Gc/8mpy yn17NVwxcEf09RzdlxcM7xZ/9LnoHtKoSw+GhgENWZhNG6E7dATtzsEAmNqt5N4ZZNYVe2 o9lPiF/vWt1BkXJTDrWU/5veT4QYSoeVE4rxlek/bUdmFYppcYqtOI6Ym4KfICaRafaRW3 f3/d2BABH6ZjtJoNFriDF2Ttdg8h89KgN+9/OpTEBuEdqf46Ts474RUtfPOHVg== From: Luca Ceresoli Date: Thu, 06 Feb 2025 19:14:34 +0100 Subject: [PATCH v6 19/26] drm/tests: bridge: add KUnit tests for DRM bridges (init and destroy) MIME-Version: 1.0 Message-Id: <20250206-hotplug-drm-bridge-v6-19-9d6f2c9c3058@bootlin.com> References: <20250206-hotplug-drm-bridge-v6-0-9d6f2c9c3058@bootlin.com> In-Reply-To: <20250206-hotplug-drm-bridge-v6-0-9d6f2c9c3058@bootlin.com> To: Simona Vetter , Inki Dae , Jagan Teki , Marek Szyprowski , Catalin Marinas , Will Deacon , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Daniel Thompson , Andrzej Hajda , Jonathan Corbet , Sam Ravnborg , Boris Brezillon , Nicolas Ferre , Alexandre Belloni , Claudiu Beznea , Jessica Zhang Cc: Paul Kocialkowski , Maxime Ripard , Dmitry Baryshkov , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Maarten Lankhorst , Thomas Zimmermann , David Airlie , =?utf-8?q?Herv=C3=A9_Codina?= , Thomas Petazzoni , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-doc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Paul Kocialkowski , Luca Ceresoli X-Mailer: b4 0.14.2 X-GND-State: clean X-GND-Score: -100 X-GND-Cause: gggruggvucftvghtrhhoucdtuddrgeefvddrtddtgddvjedtkecutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfitefpfffkpdcuggftfghnshhusghstghrihgsvgenuceurghilhhouhhtmecufedtudenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujfgurhephfffufggtgfgkfhfjgfvvefosehtjeertdertdejnecuhfhrohhmpefnuhgtrgcuvegvrhgvshholhhiuceolhhutggrrdgtvghrvghsohhlihessghoohhtlhhinhdrtghomheqnecuggftrfgrthhtvghrnhepieeiuedvffetgfeuudelheeutefggfejieettdetteekueeuueeukeevvedvueevnecukfhppedvrgdtvdemieejtdemvddtvddtmegvrgdtudemhegrgedtmedvughfieemrgdulegvmedutgejgeenucevlhhushhtvghrufhiiigvpeduheenucfrrghrrghmpehinhgvthepvdgrtddvmeeijedtmedvtddvtdemvggrtddumeehrgegtdemvdgufheimegrudelvgemudgtjeegpdhhvghloheplgduvdejrddtrddurddungdpmhgrihhlfhhrohhmpehluhgtrgdrtggvrhgvshholhhisegsohhothhlihhnrdgtohhmpdhnsggprhgtphhtthhopeefkedprhgtphhtthhopegtrghtrghlihhnrdhmrghrihhnrghssegrrhhmrdgtohhmpdhrtghpthhtohepshdrhhgruhgvrhesphgvnhhguhhtrhhonhhigidruggvpdhrtghpthhtoheprghlvgigrghnughrvgdrsggvlhhlohhnihessghoohhtlhhinhdrtghom hdprhgtphhtthhopegtlhgruhguihhurdgsvgiinhgvrgesthhugihonhdruggvvhdprhgtphhtthhopehmrdhsiiihphhrohifshhkihesshgrmhhsuhhnghdrtghomhdprhgtphhtthhopegtohhrsggvtheslhifnhdrnhgvthdprhgtphhtthhopehsihhmohhnrgesfhhffihllhdrtghhpdhrtghpthhtohepughrihdquggvvhgvlheslhhishhtshdrfhhrvggvuggvshhkthhophdrohhrgh X-GND-Sasl: luca.ceresoli@bootlin.com X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250206_101530_417149_87DE1A69 X-CRM114-Status: GOOD ( 18.31 ) 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 Add a basic KUnit test for the newly introduced drm_bridge_alloc(). Signed-off-by: Luca Ceresoli --- Changed in v6: - update to new drm_bridge_alloc() API - remove drm_test_drm_bridge_put test, not straightforward to write with the new API and the current notification mechanism - do not allocate a drm_device: a bridge is allocated without one - rename some identifiers for easier code reading This patch was added in v5. --- drivers/gpu/drm/tests/Makefile | 1 + drivers/gpu/drm/tests/drm_bridge_test.c | 72 +++++++++++++++++++++++++++++++++ 2 files changed, 73 insertions(+) diff --git a/drivers/gpu/drm/tests/Makefile b/drivers/gpu/drm/tests/Makefile index 56dab563abd7a7ee7c147bd6b4927e2436b82e1d..909f98a132bb1d057b2666e8b891683ffb11cca4 100644 --- a/drivers/gpu/drm/tests/Makefile +++ b/drivers/gpu/drm/tests/Makefile @@ -4,6 +4,7 @@ obj-$(CONFIG_DRM_KUNIT_TEST_HELPERS) += \ drm_kunit_helpers.o obj-$(CONFIG_DRM_KUNIT_TEST) += \ + drm_bridge_test.o \ drm_buddy_test.o \ drm_cmdline_parser_test.o \ drm_connector_test.o \ diff --git a/drivers/gpu/drm/tests/drm_bridge_test.c b/drivers/gpu/drm/tests/drm_bridge_test.c new file mode 100644 index 0000000000000000000000000000000000000000..dc5e9260cedaa29126fd6af25a6ba2f6eee05a87 --- /dev/null +++ b/drivers/gpu/drm/tests/drm_bridge_test.c @@ -0,0 +1,72 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Kunit test for DRM bridges + */ + +#include + +#include +#include + +struct drm_bridge_test_ctx { + struct device *dev; +}; + +/* + * Mimick the typical struct defined by a bridge driver, which embeds a + * bridge plus other fields. + */ +struct dummy_drm_bridge { + int dummy; // ensure we test non-zero @bridge offset + struct drm_bridge bridge; +}; + +static const struct drm_bridge_funcs drm_bridge_dummy_funcs = { +}; + +static int drm_test_bridge_init(struct kunit *test) +{ + struct drm_bridge_test_ctx *ctx; + + ctx = kunit_kzalloc(test, sizeof(*ctx), GFP_KERNEL); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx); + + ctx->dev = kunit_device_register(test, "drm-bridge-dev"); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx->dev); + + test->priv = ctx; + return 0; +} + +/* + * Test that the allocation and initialization of a bridge works as + * expected and doesn't report any error. + */ +static void drm_test_drm_bridge_alloc(struct kunit *test) +{ + struct drm_bridge_test_ctx *ctx = test->priv; + struct dummy_drm_bridge *dummy; + + dummy = devm_drm_bridge_alloc(ctx->dev, struct dummy_drm_bridge, bridge, + &drm_bridge_dummy_funcs); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, dummy); +} + +static struct kunit_case drm_bridge_alloc_tests[] = { + KUNIT_CASE(drm_test_drm_bridge_alloc), + { } +}; + +static struct kunit_suite drm_bridge_alloc_test_suite = { + .name = "drm_bridge_alloc", + .init = drm_test_bridge_init, + .test_cases = drm_bridge_alloc_tests, +}; + +kunit_test_suites( + &drm_bridge_alloc_test_suite, +); + +MODULE_AUTHOR("Luca Ceresoli "); +MODULE_DESCRIPTION("Kunit test for drm_bridge functions"); +MODULE_LICENSE("GPL");