diff options
| author | Maxime Ripard <maxime@cerno.tech> | 2022-11-14 16:00:21 +0300 |
|---|---|---|
| committer | Maxime Ripard <maxime@cerno.tech> | 2022-11-15 12:08:09 +0300 |
| commit | 44a3928324e9757f7c321535756730be948941c2 (patch) | |
| tree | 99bff2955d4c865ea28eb11a3b0907e79ee74222 /drivers/gpu/drm | |
| parent | 99e49bfd9339a7fe9cb89202ad5f392573739e4f (diff) | |
| download | linux-44a3928324e9757f7c321535756730be948941c2.tar.xz | |
drm/tests: Add Kunit Helpers
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 <noralf@tronnes.org>
Tested-by: Mateusz Kwiatkowski <kfyatek+publicgit@gmail.com>
Link: https://lore.kernel.org/r/20220728-rpi-analog-tv-properties-v9-2-24b168e5bcd5@cerno.tech
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/tests/Makefile | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/tests/drm_kunit_helpers.c | 64 | ||||
| -rw-r--r-- | drivers/gpu/drm/tests/drm_kunit_helpers.h | 9 |
3 files changed, 74 insertions, 0 deletions
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 <drm/drm_drv.h> +#include <drm/drm_managed.h> + +#include <kunit/resource.h> + +#include <linux/device.h> + +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_ |