Commit 44a39283 authored by Maxime Ripard's avatar Maxime Ripard

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: default avatarNoralf Trønnes <noralf@tronnes.org>
Tested-by: default avatarMateusz Kwiatkowski <kfyatek+publicgit@gmail.com>
Link: https://lore.kernel.org/r/20220728-rpi-analog-tv-properties-v9-2-24b168e5bcd5@cerno.techSigned-off-by: default avatarMaxime Ripard <maxime@cerno.tech>
parent 99e49bfd
......@@ -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
#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;
}
#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_
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