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drm/vc4: tests: Introduce a mocking infrastructure

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In order to test the current atomic_check hooks we need to have a DRM
device that has roughly the same capabilities and layout that the actual
hardware. We'll also need a bunch of functions to create arbitrary
atomic states.

Let's create some helpers to create a device that behaves like the real
one, and some helpers to maintain the atomic state we want to check.

Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Maíra Canal <mcanal@igalia.com>
Link: https://lore.kernel.org/r/20221123-rpi-kunit-tests-v3-17-4615a663a84a@cerno.tech
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
This commit is contained in:
Maxime Ripard
2022-12-01 16:11:48 +01:00
parent 640dbcc91d
commit f759f5b53f
12 changed files with 511 additions and 13 deletions
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60
drivers/gpu/drm/vc4/tests/vc4_mock.h Normal file
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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef VC4_MOCK_H_
#define VC4_MOCK_H_
#include "../vc4_drv.h"
static inline
struct drm_crtc *vc4_find_crtc_for_encoder(struct kunit *test,
struct drm_device *drm,
struct drm_encoder *encoder)
{
struct drm_crtc *crtc;
KUNIT_ASSERT_EQ(test, hweight32(encoder->possible_crtcs), 1);
drm_for_each_crtc(crtc, drm)
if (encoder->possible_crtcs & drm_crtc_mask(crtc))
return crtc;
return NULL;
}
struct vc4_dummy_plane {
struct vc4_plane plane;
};
struct vc4_dummy_plane *vc4_dummy_plane(struct kunit *test,
struct drm_device *drm,
enum drm_plane_type type);
struct vc4_dummy_crtc {
struct vc4_crtc crtc;
};
struct vc4_dummy_crtc *vc4_mock_pv(struct kunit *test,
struct drm_device *drm,
struct drm_plane *plane,
const struct vc4_crtc_data *data);
struct vc4_dummy_output {
struct vc4_encoder encoder;
struct drm_connector connector;
};
struct vc4_dummy_output *vc4_dummy_output(struct kunit *test,
struct drm_device *drm,
struct drm_crtc *crtc,
enum vc4_encoder_type vc4_encoder_type,
unsigned int kms_encoder_type,
unsigned int connector_type);
struct vc4_dev *vc4_mock_device(struct kunit *test);
struct vc4_dev *vc5_mock_device(struct kunit *test);
int vc4_mock_atomic_add_output(struct kunit *test, struct drm_device *drm,
enum vc4_encoder_type type,
struct drm_atomic_state *state);
#endif // VC4_MOCK_H_