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Thu, 22 Sep 2022 10:25:43 -0400 (EDT) From: Maxime Ripard Date: Thu, 22 Sep 2022 16:25:19 +0200 Subject: [PATCH v2 02/33] drm/tests: Add Kunit Helpers MIME-Version: 1.0 Message-Id: <20220728-rpi-analog-tv-properties-v2-2-f733a0ed9f90@cerno.tech> References: <20220728-rpi-analog-tv-properties-v2-0-f733a0ed9f90@cerno.tech> In-Reply-To: <20220728-rpi-analog-tv-properties-v2-0-f733a0ed9f90@cerno.tech> To: Jernej Skrabec , Rodrigo Vivi , Ben Skeggs , David Airlie , Maxime Ripard , Joonas Lahtinen , Emma Anholt , Karol Herbst , Samuel Holland , Jani Nikula , Thomas Zimmermann , Daniel Vetter , Lyude Paul , Maarten Lankhorst , Tvrtko Ursulin , Chen-Yu Tsai Cc: =?unknown-8bit?q?Hans_de_Goede_=3Chdegoede=40redhat=2Ecom=3E=2C_nouveau?= =?unknown-8bit?q?=40lists=2Efreedesktop=2Eorg=2C_Geert_Uytterhoeven_=3Cgeer?= =?unknown-8bit?q?t=40linux-m68k=2Eorg=3E=2C?= =?unknown-8bit?q?_Dave_Stevenson_=3Cdave=2Estevenson=40raspberrypi=2Ecom=3E?= =?unknown-8bit?q?=2C_linux-kernel=40vger=2Ekernel=2Eorg=2C_linux-arm-kernel?= =?unknown-8bit?q?=40lists=2Einfradead=2Eorg=2C?= =?unknown-8bit?q?_Phil_Elwell_=3Cphil=40raspberrypi=2Ecom=3E=2C_intel-gfx=40?= =?unknown-8bit?q?lists=2Efreedesktop=2Eorg=2C_Noralf_Tr=C3=B8nnes_=3Cnoralf?= =?unknown-8bit?q?=40tronnes=2Eorg=3E=2C?= =?unknown-8bit?q?_Dom_Cobley_=3Cdom=40raspberrypi=2Ecom=3E=2C_linux-sunxi=40?= =?unknown-8bit?q?lists=2Elinux=2Edev=2C_Maxime_Ripard_=3Cmaxime=40cerno=2Et?= =?unknown-8bit?q?ech=3E=2C?= =?unknown-8bit?q?_Mateusz_Kwiatkowski_=3Ckfyatek+publicgit=40gmail=2Ecom=3E?= =?unknown-8bit?q?=2C_dri-devel=40lists=2Efreedesktop=2Eorg?= X-Mailer: b4 0.10.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2632; i=maxime@cerno.tech; h=from:subject:message-id; bh=Jkj0bmR2zQZJoCYiHexMb/PSdpWvmRh+mC/KTK8yntA=; b=owGbwMvMwCX2+D1vfrpE4FHG02pJDMk6BQExhlI5ecZ9h9K69RyPF0U9PfgsMePk741NSsuY1md7 bljUUcrCIMbFICumyBIjbL4k7tSs151sfPNg5rAygQxh4OIUgIlIT2dk2Dzpi/Q79gNbTDxaK6KSzR 0rL6YcrogVqfgznWXjbdG8Lob/qVOqOKdGb+E5ucEh4knovXnxle96ju0PMJZ+uTHkgGkHHwA= 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-20220922_072548_240315_F32B5566 X-CRM114-Status: GOOD ( 13.84 ) 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 As the number of kunit tests in KMS grows further, we start to have multiple test suites that, for example, need to register a mock DRM driver to interact with the KMS function they are supposed to test. Let's add a file meant to provide those kind of helpers to avoid duplication. Signed-off-by: Maxime Ripard diff --git a/drivers/gpu/drm/tests/Makefile b/drivers/gpu/drm/tests/Makefile index 2d9f49b62ecb..b29ef1085cad 100644 --- a/drivers/gpu/drm/tests/Makefile +++ b/drivers/gpu/drm/tests/Makefile @@ -8,6 +8,7 @@ obj-$(CONFIG_DRM_KUNIT_TEST) += \ drm_format_helper_test.o \ drm_format_test.o \ drm_framebuffer_test.o \ + drm_kunit_helpers.o \ drm_mm_test.o \ drm_plane_helper_test.o \ drm_rect_test.o diff --git a/drivers/gpu/drm/tests/drm_kunit_helpers.c b/drivers/gpu/drm/tests/drm_kunit_helpers.c new file mode 100644 index 000000000000..7ebd620481c1 --- /dev/null +++ b/drivers/gpu/drm/tests/drm_kunit_helpers.c @@ -0,0 +1,54 @@ +#include +#include + +#include + +static const struct drm_mode_config_funcs drm_mode_config_funcs = { +}; + +static const struct drm_driver drm_mode_driver = { +}; + +static void drm_kunit_free_device(struct drm_device *drm, void *ptr) +{ + struct device *dev = ptr; + + root_device_unregister(dev); +} + +struct drm_device *drm_kunit_device_init(const char *name) +{ + struct drm_device *drm; + struct device *dev; + int ret; + + dev = root_device_register(name); + if (IS_ERR(dev)) + return ERR_CAST(dev); + + drm = drm_dev_alloc(&drm_mode_driver, dev); + if (IS_ERR(drm)) { + root_device_unregister(dev); + return ERR_CAST(drm); + } + drm->mode_config.funcs = &drm_mode_config_funcs; + + ret = drmm_add_action_or_reset(drm, drm_kunit_free_device, dev); + if (ret) + goto err_put_device; + + ret = drmm_mode_config_init(drm); + if (ret) + return ERR_PTR(ret); + + return drm; + +err_put_device: + drm_dev_put(drm); + return ERR_PTR(ret); +} + +void drm_kunit_device_exit(struct drm_device *drm) +{ + drm_dev_put(drm); +} diff --git a/drivers/gpu/drm/tests/drm_kunit_helpers.h b/drivers/gpu/drm/tests/drm_kunit_helpers.h new file mode 100644 index 000000000000..5015a327a8c1 --- /dev/null +++ b/drivers/gpu/drm/tests/drm_kunit_helpers.h @@ -0,0 +1,9 @@ +#ifndef DRM_KUNIT_HELPERS_H_ +#define DRM_KUNIT_HELPERS_H_ + +struct drm_device; + +struct drm_device *drm_kunit_device_init(const char *name); +void drm_kunit_device_exit(struct drm_device *drm); + +#endif // DRM_KUNIT_HELPERS_H_