diff mbox series

[v2,06/11] drm/tests: helpers: Create a helper to allocate an atomic state

Message ID 20230720-kms-kunit-actions-rework-v2-6-175017bd56ab@kernel.org
State Superseded
Headers show
Series drm: kunit: Switch to kunit actions | expand

Commit Message

Maxime Ripard July 20, 2023, 11:15 a.m. UTC 
As we gain more tests, boilerplate to allocate an atomic state and free
it starts to be there more and more as well.

In order to reduce the allocation boilerplate, we can create a helper
to create that atomic state, and call an action when the test is done.
This will also clean up the exit path.

Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Signed-off-by: Maxime Ripard <mripard@kernel.org>
---
 drivers/gpu/drm/tests/drm_kunit_helpers.c | 39 +++++++++++++++++++++++++++++++
 include/drm/drm_kunit_helpers.h           |  5 ++++
 2 files changed, 44 insertions(+)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/tests/drm_kunit_helpers.c b/drivers/gpu/drm/tests/drm_kunit_helpers.c
index 5130d4553262..d3b2c6b48163 100644
--- a/drivers/gpu/drm/tests/drm_kunit_helpers.c
+++ b/drivers/gpu/drm/tests/drm_kunit_helpers.c
@@ -1,5 +1,6 @@ 
 // SPDX-License-Identifier: GPL-2.0
 
+#include <drm/drm_atomic.h>
 #include <drm/drm_drv.h>
 #include <drm/drm_kunit_helpers.h>
 #include <drm/drm_managed.h>
@@ -161,5 +162,43 @@  drm_kunit_helper_acquire_ctx_alloc(struct kunit *test)
 }
 EXPORT_SYMBOL_GPL(drm_kunit_helper_acquire_ctx_alloc);
 
+/**
+ * drm_kunit_helper_atomic_state_alloc - Allocates an atomic state
+ * @test: The test context object
+ * @drm: The device to alloc the state for
+ * @ctx: Locking context for that atomic update
+ *
+ * Allocates a empty atomic state.
+ *
+ * The state is tied to the kunit test context, so we must not call
+ * drm_atomic_state_put() on it, it will be done so automatically.
+ *
+ * Returns:
+ * An ERR_PTR on error, a pointer to the newly allocated state otherwise
+ */
+struct drm_atomic_state *
+drm_kunit_helper_atomic_state_alloc(struct kunit *test,
+				    struct drm_device *drm,
+				    struct drm_modeset_acquire_ctx *ctx)
+{
+	struct drm_atomic_state *state;
+	int ret;
+
+	state = drm_atomic_state_alloc(drm);
+	if (!state)
+		return ERR_PTR(-ENOMEM);
+
+	ret = kunit_add_action_or_reset(test,
+					(kunit_action_t *)drm_atomic_state_put,
+					state);
+	if (ret)
+		return ERR_PTR(ret);
+
+	state->acquire_ctx = ctx;
+
+	return state;
+}
+EXPORT_SYMBOL_GPL(drm_kunit_helper_atomic_state_alloc);
+
 MODULE_AUTHOR("Maxime Ripard <maxime@cerno.tech>");
 MODULE_LICENSE("GPL");
diff --git a/include/drm/drm_kunit_helpers.h b/include/drm/drm_kunit_helpers.h
index 4ba5e10653c6..514c8a7a32f0 100644
--- a/include/drm/drm_kunit_helpers.h
+++ b/include/drm/drm_kunit_helpers.h
@@ -90,4 +90,9 @@  __drm_kunit_helper_alloc_drm_device(struct kunit *test,
 struct drm_modeset_acquire_ctx *
 drm_kunit_helper_acquire_ctx_alloc(struct kunit *test);
 
+struct drm_atomic_state *
+drm_kunit_helper_atomic_state_alloc(struct kunit *test,
+				    struct drm_device *drm,
+				    struct drm_modeset_acquire_ctx *ctx);
+
 #endif // DRM_KUNIT_HELPERS_H_