linux-kernel - [PATCH] drm/stm: ltdc: Use simple encoder

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Date:   Tue,  2 Mar 2021 23:27:00 +0530
From:   Jagan Teki <jagan@...rulasolutions.com>
To:     Yannick Fertre <yannick.fertre@...com>,
        Philippe Cornu <philippe.cornu@...com>,
        Benjamin Gaignard <benjamin.gaignard@...aro.org>,
        Vincent Abriou <vincent.abriou@...com>
Cc:     dri-devel@...ts.freedesktop.org,
        linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-amarula@...rulasolutions.com,
        Jagan Teki <jagan@...rulasolutions.com>
Subject: [PATCH] drm/stm: ltdc: Use simple encoder

STM ltdc driver uses an empty implementation for its encoder.
Replace the code with the generic simple encoder.

Signed-off-by: Jagan Teki <jagan@...rulasolutions.com>
---
 drivers/gpu/drm/stm/ltdc.c | 12 ++----------
 1 file changed, 2 insertions(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/stm/ltdc.c b/drivers/gpu/drm/stm/ltdc.c
index 7812094f93d6..aeeb43524ca0 100644
--- a/drivers/gpu/drm/stm/ltdc.c
+++ b/drivers/gpu/drm/stm/ltdc.c
@@ -31,6 +31,7 @@
 #include <drm/drm_of.h>
 #include <drm/drm_plane_helper.h>
 #include <drm/drm_probe_helper.h>
+#include <drm/drm_simple_kms_helper.h>
 #include <drm/drm_vblank.h>
 
 #include <video/videomode.h>
@@ -1020,14 +1021,6 @@ static int ltdc_crtc_init(struct drm_device *ddev, struct drm_crtc *crtc)
 	return ret;
 }
 
-/*
- * DRM_ENCODER
- */
-
-static const struct drm_encoder_funcs ltdc_encoder_funcs = {
-	.destroy = drm_encoder_cleanup,
-};
-
 static void ltdc_encoder_disable(struct drm_encoder *encoder)
 {
 	struct drm_device *ddev = encoder->dev;
@@ -1088,8 +1081,7 @@ static int ltdc_encoder_init(struct drm_device *ddev, struct drm_bridge *bridge)
 	encoder->possible_crtcs = CRTC_MASK;
 	encoder->possible_clones = 0;	/* No cloning support */
 
-	drm_encoder_init(ddev, encoder, &ltdc_encoder_funcs,
-			 DRM_MODE_ENCODER_DPI, NULL);
+	drm_simple_encoder_init(ddev, encoder, DRM_MODE_ENCODER_DPI);
 
 	drm_encoder_helper_add(encoder, &ltdc_encoder_helper_funcs);
 
-- 
2.25.1