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// SPDX-License-Identifier: GPL-2.0
/*
* Kunit test for drm_atomic functions
*/
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_state_helper.h>
#include <drm/drm_atomic_uapi.h>
#include <drm/drm_encoder.h>
#include <drm/drm_kunit_helpers.h>
#include <drm/drm_modeset_helper_vtables.h>
#include <kunit/test.h>
struct drm_atomic_test_priv {
struct drm_device drm;
struct drm_plane *plane;
struct drm_crtc *crtc;
struct drm_encoder encoder;
struct drm_connector connector;
};
static const struct drm_connector_helper_funcs drm_atomic_init_connector_helper_funcs = {
};
static const struct drm_connector_funcs drm_atomic_init_connector_funcs = {
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
.reset = drm_atomic_helper_connector_reset,
};
static struct drm_atomic_test_priv *create_device(struct kunit *test)
{
struct drm_atomic_test_priv *priv;
struct drm_connector *connector;
struct drm_encoder *enc;
struct drm_device *drm;
struct drm_plane *plane;
struct drm_crtc *crtc;
struct device *dev;
int ret;
dev = drm_kunit_helper_alloc_device(test);
if (IS_ERR(dev))
return ERR_CAST(dev);
priv = drm_kunit_helper_alloc_drm_device(test, dev,
struct drm_atomic_test_priv, drm,
DRIVER_MODESET | DRIVER_ATOMIC);
if (IS_ERR(priv))
return ERR_CAST(priv);
drm = &priv->drm;
plane = drm_kunit_helper_create_primary_plane(test, drm,
NULL,
NULL,
NULL, 0,
NULL);
if (IS_ERR(plane))
return ERR_CAST(plane);
priv->plane = plane;
crtc = drm_kunit_helper_create_crtc(test, drm,
plane, NULL,
NULL,
NULL);
if (IS_ERR(crtc))
return ERR_CAST(crtc);
priv->crtc = crtc;
enc = &priv->encoder;
ret = drmm_encoder_init(drm, enc, NULL, DRM_MODE_ENCODER_TMDS, NULL);
if (ret)
return ERR_PTR(ret);
enc->possible_crtcs = drm_crtc_mask(crtc);
connector = &priv->connector;
ret = drmm_connector_init(drm, connector,
&drm_atomic_init_connector_funcs,
DRM_MODE_CONNECTOR_VIRTUAL,
NULL);
if (ret)
return ERR_PTR(ret);
drm_connector_helper_add(connector, &drm_atomic_init_connector_helper_funcs);
drm_connector_attach_encoder(connector, enc);
drm_mode_config_reset(drm);
return priv;
}
static void drm_test_drm_atomic_get_connector_for_encoder(struct kunit *test)
{
struct drm_modeset_acquire_ctx ctx;
struct drm_atomic_test_priv *priv;
struct drm_display_mode *mode;
struct drm_connector *curr_connector;
int ret;
priv = create_device(test);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv);
mode = drm_kunit_display_mode_from_cea_vic(test, &priv->drm, 16);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, mode);
drm_modeset_acquire_init(&ctx, 0);
retry_enable:
ret = drm_kunit_helper_enable_crtc_connector(test, &priv->drm,
priv->crtc, &priv->connector,
mode, &ctx);
if (ret == -EDEADLK) {
drm_modeset_backoff(&ctx);
goto retry_enable;
}
KUNIT_ASSERT_EQ(test, ret, 0);
drm_modeset_drop_locks(&ctx);
drm_modeset_acquire_fini(&ctx);
drm_modeset_acquire_init(&ctx, 0);
retry_conn:
curr_connector = drm_atomic_get_connector_for_encoder(&priv->encoder,
&ctx);
if (PTR_ERR(curr_connector) == -EDEADLK) {
drm_modeset_backoff(&ctx);
goto retry_conn;
}
KUNIT_EXPECT_PTR_EQ(test, curr_connector, &priv->connector);
drm_modeset_drop_locks(&ctx);
drm_modeset_acquire_fini(&ctx);
}
static struct kunit_case drm_atomic_get_connector_for_encoder_tests[] = {
KUNIT_CASE(drm_test_drm_atomic_get_connector_for_encoder),
{ }
};
static struct kunit_suite drm_atomic_get_connector_for_encoder_test_suite = {
.name = "drm_test_atomic_get_connector_for_encoder",
.test_cases = drm_atomic_get_connector_for_encoder_tests,
};
kunit_test_suite(drm_atomic_get_connector_for_encoder_test_suite);
MODULE_AUTHOR("Maxime Ripard <mripard@kernel.org>");
MODULE_DESCRIPTION("Kunit test for drm_atomic functions");
MODULE_LICENSE("GPL");
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