linux-kernel - [PATCH v3 2/4] drm/vkms: Switch to managed for encoder

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Message-Id: <20240912-google-vkms-managed-v3-2-7708d6ad262d@bootlin.com>
Date: Thu, 12 Sep 2024 15:25:15 +0200
From: Louis Chauvet <louis.chauvet@...tlin.com>
To: Rodrigo Siqueira <rodrigosiqueiramelo@...il.com>, 
 Melissa Wen <melissa.srw@...il.com>, 
 Maíra Canal <mairacanal@...eup.net>, 
 Haneen Mohammed <hamohammed.sa@...il.com>, Daniel Vetter <daniel@...ll.ch>, 
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, 
 David Airlie <airlied@...il.com>
Cc: dri-devel@...ts.freedesktop.org, arthurgrillo@...eup.net, 
 linux-kernel@...r.kernel.org, jeremie.dautheribes@...tlin.com, 
 miquel.raynal@...tlin.com, thomas.petazzoni@...tlin.com, 
 seanpaul@...gle.com, nicolejadeyee@...gle.com, 
 Louis Chauvet <louis.chauvet@...tlin.com>
Subject: [PATCH v3 2/4] drm/vkms: Switch to managed for encoder

The current VKMS driver uses non-managed function to create encoders. It
is not an issue yet, but in order to support multiple devices easily,
convert this code to use drm and device managed helpers.

Signed-off-by: Louis Chauvet <louis.chauvet@...tlin.com>
---
 drivers/gpu/drm/vkms/vkms_output.c | 14 ++++----------
 1 file changed, 4 insertions(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/vkms/vkms_output.c b/drivers/gpu/drm/vkms/vkms_output.c
index 1a445a4ff6ffb023a1c1ef7e141c771277146251..2226ba1972f3ff51483abacac45ee8914be0c94a 100644
--- a/drivers/gpu/drm/vkms/vkms_output.c
+++ b/drivers/gpu/drm/vkms/vkms_output.c
@@ -13,10 +13,6 @@ static const struct drm_connector_funcs vkms_connector_funcs = {
 	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
 };
 
-static const struct drm_encoder_funcs vkms_encoder_funcs = {
-	.destroy = drm_encoder_cleanup,
-};
-
 static int vkms_conn_get_modes(struct drm_connector *connector)
 {
 	int count;
@@ -75,18 +71,18 @@ int vkms_output_init(struct vkms_device *vkmsdev)
 
 	drm_connector_helper_add(connector, &vkms_conn_helper_funcs);
 
-	ret = drm_encoder_init(dev, encoder, &vkms_encoder_funcs,
-			       DRM_MODE_ENCODER_VIRTUAL, NULL);
+	ret = drmm_encoder_init(dev, encoder, NULL,
+				DRM_MODE_ENCODER_VIRTUAL, NULL);
 	if (ret) {
 		DRM_ERROR("Failed to init encoder\n");
-		return ret;
+		goto err_connector;
 	}
 	encoder->possible_crtcs = drm_crtc_mask(crtc);
 
 	ret = drm_connector_attach_encoder(connector, encoder);
 	if (ret) {
 		DRM_ERROR("Failed to attach connector to encoder\n");
-		goto err_attach;
+		return ret;
 	}
 
 	if (vkmsdev->config->writeback) {
@@ -99,8 +95,6 @@ int vkms_output_init(struct vkms_device *vkmsdev)
 
 	return 0;
 
-err_attach:
-	drm_encoder_cleanup(encoder);
 err_connector:
 	drm_crtc_cleanup(crtc);
 	return ret;

-- 
2.44.2