The qxl driver uses an empty implementation for its encoder. Replace
the code with the generic simple encoder.

v2:
        * rebase onto new simple-encoder interface

Signed-off-by: Thomas Zimmermann <tzimmerm...@suse.de>
Acked-by: Sam Ravnborg <s...@ravnborg.org>
Acked-by: Gerd Hoffmann <kra...@redhat.com>
---
 drivers/gpu/drm/qxl/qxl_display.c | 18 +++---------------
 1 file changed, 3 insertions(+), 15 deletions(-)

diff --git a/drivers/gpu/drm/qxl/qxl_display.c 
b/drivers/gpu/drm/qxl/qxl_display.c
index ab4f8dd00400..9c0e1add59fb 100644
--- a/drivers/gpu/drm/qxl/qxl_display.c
+++ b/drivers/gpu/drm/qxl/qxl_display.c
@@ -31,6 +31,7 @@
 #include <drm/drm_gem_framebuffer_helper.h>
 #include <drm/drm_plane_helper.h>
 #include <drm/drm_probe_helper.h>
+#include <drm/drm_simple_kms_helper.h>
 
 #include "qxl_drv.h"
 #include "qxl_object.h"
@@ -1007,9 +1008,6 @@ static struct drm_encoder *qxl_best_encoder(struct 
drm_connector *connector)
        return &qxl_output->enc;
 }
 
-static const struct drm_encoder_helper_funcs qxl_enc_helper_funcs = {
-};
-
 static const struct drm_connector_helper_funcs qxl_connector_helper_funcs = {
        .get_modes = qxl_conn_get_modes,
        .mode_valid = qxl_conn_mode_valid,
@@ -1059,15 +1057,6 @@ static const struct drm_connector_funcs 
qxl_connector_funcs = {
        .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
 };
 
-static void qxl_enc_destroy(struct drm_encoder *encoder)
-{
-       drm_encoder_cleanup(encoder);
-}
-
-static const struct drm_encoder_funcs qxl_enc_funcs = {
-       .destroy = qxl_enc_destroy,
-};
-
 static int qxl_mode_create_hotplug_mode_update_property(struct qxl_device 
*qdev)
 {
        if (qdev->hotplug_mode_update_property)
@@ -1098,15 +1087,14 @@ static int qdev_output_init(struct drm_device *dev, int 
num_output)
        drm_connector_init(dev, &qxl_output->base,
                           &qxl_connector_funcs, DRM_MODE_CONNECTOR_VIRTUAL);
 
-       drm_encoder_init(dev, &qxl_output->enc, &qxl_enc_funcs,
-                        DRM_MODE_ENCODER_VIRTUAL, NULL);
+       drm_simple_encoder_init(dev, &qxl_output->enc,
+                               DRM_MODE_ENCODER_VIRTUAL);
 
        /* we get HPD via client monitors config */
        connector->polled = DRM_CONNECTOR_POLL_HPD;
        encoder->possible_crtcs = 1 << num_output;
        drm_connector_attach_encoder(&qxl_output->base,
                                          &qxl_output->enc);
-       drm_encoder_helper_add(encoder, &qxl_enc_helper_funcs);
        drm_connector_helper_add(connector, &qxl_connector_helper_funcs);
 
        drm_object_attach_property(&connector->base,
-- 
2.25.0

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