[PATCH 3/6] drm/virtio: Open-code drm_simple_encoder_init()

From: Naman Arora

Date: Sun May 31 2026 - 03:37:33 EST


The helper drm_simple_encoder_init() is a thin wrapper around
drm_encoder_init() with a simple destroy-only encoder funcs struct.
Remove the dependency on drm_simple_kms_helper by open-coding the
encoder initialization directly in the driver.

Signed-off-by: Naman Arora <namanarora029@xxxxxxxxx>
---
drivers/gpu/drm/virtio/virtgpu_display.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/virtio/virtgpu_display.c b/drivers/gpu/drm/virtio/virtgpu_display.c
index f1dae9569..5b99cce17 100644
--- a/drivers/gpu/drm/virtio/virtgpu_display.c
+++ b/drivers/gpu/drm/virtio/virtgpu_display.c
@@ -32,7 +32,6 @@
#include <drm/drm_gem_framebuffer_helper.h>
#include <drm/drm_print.h>
#include <drm/drm_probe_helper.h>
-#include <drm/drm_simple_kms_helper.h>
#include <drm/drm_vblank.h>
#include <drm/drm_vblank_helper.h>

@@ -271,6 +270,10 @@ static const struct drm_connector_funcs virtio_gpu_connector_funcs = {
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
};

+static const struct drm_encoder_funcs virtio_gpu_drm_encoder_funcs = {
+ .destroy = drm_encoder_cleanup,
+};
+
static int vgdev_output_init(struct virtio_gpu_device *vgdev, int index)
{
struct drm_device *dev = vgdev->ddev;
@@ -306,7 +309,8 @@ static int vgdev_output_init(struct virtio_gpu_device *vgdev, int index)
if (vgdev->has_edid)
drm_connector_attach_edid_property(connector);

- drm_simple_encoder_init(dev, encoder, DRM_MODE_ENCODER_VIRTUAL);
+ drm_encoder_init(dev, encoder, &virtio_gpu_drm_encoder_funcs,
+ DRM_MODE_ENCODER_VIRTUAL, NULL);
drm_encoder_helper_add(encoder, &virtio_gpu_enc_helper_funcs);
encoder->possible_crtcs = 1 << index;

--
2.20.1