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Mon, 14 Nov 2022 08:00:37 -0500 (EST) From: Maxime Ripard Date: Mon, 14 Nov 2022 14:00:21 +0100 Subject: [PATCH v9 02/25] drm/tests: Add Kunit Helpers MIME-Version: 1.0 Message-Id: <20220728-rpi-analog-tv-properties-v9-2-24b168e5bcd5@cerno.tech> References: <20220728-rpi-analog-tv-properties-v9-0-24b168e5bcd5@cerno.tech> In-Reply-To: <20220728-rpi-analog-tv-properties-v9-0-24b168e5bcd5@cerno.tech> To: Maxime Ripard , Karol Herbst , Samuel Holland , Joonas Lahtinen , Daniel Vetter , Chen-Yu Tsai , Maarten Lankhorst , Lyude Paul , Thomas Zimmermann , Emma Anholt , Jani Nikula , Rodrigo Vivi , Ben Skeggs , Tvrtko Ursulin , David Airlie , Jernej Skrabec Cc: =?unknown-8bit?q?Dom_Cobley_=3Cdom=40raspberrypi=2Ecom=3E=2C_Phil_Elwell?= =?unknown-8bit?q?_=3Cphil=40raspberrypi=2Ecom=3E=2C?= =?unknown-8bit?q?_Mateusz_Kwiatkowski_=3Ckfyatek+publicgit=40gmail=2Ecom=3E?= =?unknown-8bit?q?=2C_nouveau=40lists=2Efreedesktop=2Eorg=2C?= =?unknown-8bit?q?_Dave_Stevenson_=3Cdave=2Estevenson=40raspberrypi=2Ecom=3E?= =?unknown-8bit?q?=2C_Hans_de_Goede_=3Chdegoede=40redhat=2Ecom=3E=2C_intel-g?= =?unknown-8bit?q?fx=40lists=2Efreedesktop=2Eorg=2C?= =?unknown-8bit?q?_dri-devel=40lists=2Efreedesktop=2Eorg=2C_linux-kernel=40vg?= =?unknown-8bit?q?er=2Ekernel=2Eorg=2C_linux-arm-kernel=40lists=2Einfradead?= =?unknown-8bit?q?=2Eorg=2C?= =?unknown-8bit?q?_Noralf_Tr=C3=B8nnes_=3Cnoralf=40tronnes=2Eorg=3E=2C_Geert_?= =?unknown-8bit?q?Uytterhoeven_=3Cgeert=40linux-m68k=2Eorg=3E=2C_Maxime_Ripa?= =?unknown-8bit?q?rd_=3Cmaxime=40cerno=2Etech=3E=2C?= =?unknown-8bit?q?_linux-sunxi=40lists=2Elinux=2Edev?= X-Mailer: b4 0.11.0-dev-99e3a X-Developer-Signature: v=1; a=openpgp-sha256; l=3409; i=maxime@cerno.tech; h=from:subject:message-id; bh=8Ci/7PaTzMs8s+hjpIC/3665ddy1Hcazm7HWxVFfewQ=; b=owGbwMvMwCX2+D1vfrpE4FHG02pJDMlF1q+3G89/0P/mvtyVt7sT/vzPrN7wt+WH79y46XrLZEPO BMl0dZSyMIhxMciKKbLECJsviTs163UnG988mDmsTCBDGLg4BWAiGQ4M/5ROMS+tCL08L4L31I8JV8 TXRid6ZM3KZpi+1km+rX559gqG/6568VODYk/qtwldfXe76MM+7817S75L2LmIbYkyT2hPZQYA 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-20221114_050043_659211_E77BE4D4 X-CRM114-Status: GOOD ( 16.13 ) 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. Reviewed-by: Noralf Trønnes Tested-by: Mateusz Kwiatkowski Signed-off-by: Maxime Ripard --- Changes in v8: - Changed the API a bit to pass the features as argument Changes in v4: - Simplified the DRM device cleanup patch using devm_drm_dev_alloc() --- drivers/gpu/drm/tests/Makefile | 1 + drivers/gpu/drm/tests/drm_kunit_helpers.c | 64 +++++++++++++++++++++++++++++++ drivers/gpu/drm/tests/drm_kunit_helpers.h | 9 +++++ 3 files changed, 74 insertions(+) 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..d3f0d681b685 --- /dev/null +++ b/drivers/gpu/drm/tests/drm_kunit_helpers.c @@ -0,0 +1,64 @@ +#include +#include + +#include + +#include + +struct kunit_dev { + struct drm_device base; +}; + +static const struct drm_mode_config_funcs drm_mode_config_funcs = { +}; + +static int dev_init(struct kunit_resource *res, void *ptr) +{ + char *name = ptr; + struct device *dev; + + dev = root_device_register(name); + if (IS_ERR(dev)) + return PTR_ERR(dev); + + res->data = dev; + return 0; +} + +static void dev_free(struct kunit_resource *res) +{ + struct device *dev = res->data; + + root_device_unregister(dev); +} + +struct drm_device *drm_kunit_device_init(struct kunit *test, u32 features, char *name) +{ + struct kunit_dev *kdev; + struct drm_device *drm; + struct drm_driver *driver; + struct device *dev; + int ret; + + dev = kunit_alloc_resource(test, dev_init, dev_free, GFP_KERNEL, name); + if (!dev) + return ERR_PTR(-ENOMEM); + + driver = kunit_kzalloc(test, sizeof(*driver), GFP_KERNEL); + if (!driver) + return ERR_PTR(-ENOMEM); + + driver->driver_features = features; + kdev = devm_drm_dev_alloc(dev, driver, struct kunit_dev, base); + if (IS_ERR(kdev)) + return ERR_CAST(kdev); + + drm = &kdev->base; + drm->mode_config.funcs = &drm_mode_config_funcs; + + ret = drmm_mode_config_init(drm); + if (ret) + return ERR_PTR(ret); + + return 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..f13a18dd1c6d --- /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 kunit; + +struct drm_device *drm_kunit_device_init(struct kunit *test, u32 features, char *name); + +#endif // DRM_KUNIT_HELPERS_H_