From 7b4957684e5d813fcbdc98144e3cc5c4467b3e2e Mon Sep 17 00:00:00 2001
From: Paul Cercueil <paul@crapouillou.net>
Date: Sun, 24 Jan 2021 08:55:52 +0000
Subject: drm/ingenic: Fix non-OSD mode
Git-commit: 7b4957684e5d813fcbdc98144e3cc5c4467b3e2e
Patch-mainline: v5.13-rc1
References: git-fixes

Even though the JZ4740 did not have the OSD mode, it had (according to
the documentation) two DMA channels, but there is absolutely no
information about how to select the second DMA channel.

Make the ingenic-drm driver work in non-OSD mode by using the
foreground0 plane (which is bound to the DMA0 channel) as the primary
plane, instead of the foreground1 plane, which is the primary plane
when in OSD mode.

Fixes: 3c9bea4ef32b ("drm/ingenic: Add support for OSD mode")
Cc: <stable@vger.kernel.org> # v5.8+
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Tested-by: H. Nikolaus Schaller <hns@goldelico.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210124085552.29146-5-paul@crapouillou.net
Signed-off-by: Patrik Jakobsson <pjakobsson@suse.de>
---
 drivers/gpu/drm/ingenic/ingenic-drm-drv.c |   11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

--- a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
+++ b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
@@ -443,7 +443,7 @@ static void ingenic_drm_plane_atomic_upd
 		height = state->src_h >> 16;
 		cpp = state->fb->format->cpp[0];
 
-		if (priv->soc_info->has_osd && plane->type == DRM_PLANE_TYPE_OVERLAY)
+		if (!priv->soc_info->has_osd || plane->type == DRM_PLANE_TYPE_OVERLAY)
 			hwdesc = priv->dma_hwdesc_f0;
 		else
 			hwdesc = priv->dma_hwdesc_f1;
@@ -679,6 +679,7 @@ static int ingenic_drm_bind(struct devic
 	const struct jz_soc_info *soc_info;
 	struct ingenic_drm *priv;
 	struct clk *parent_clk;
+	struct drm_plane *primary;
 	struct drm_bridge *bridge;
 	struct drm_panel *panel;
 	struct drm_encoder *encoder;
@@ -771,9 +772,11 @@ static int ingenic_drm_bind(struct devic
 	if (soc_info->has_osd)
 		priv->ipu_plane = drm_plane_from_index(drm, 0);
 
-	drm_plane_helper_add(&priv->f1, &ingenic_drm_plane_helper_funcs);
+	primary = priv->soc_info->has_osd ? &priv->f1 : &priv->f0;
 
-	ret = drm_universal_plane_init(drm, &priv->f1, 1,
+	drm_plane_helper_add(primary, &ingenic_drm_plane_helper_funcs);
+
+	ret = drm_universal_plane_init(drm, primary, 1,
 				       &ingenic_drm_primary_plane_funcs,
 				       ingenic_drm_primary_formats,
 				       ARRAY_SIZE(ingenic_drm_primary_formats),
@@ -785,7 +788,7 @@ static int ingenic_drm_bind(struct devic
 
 	drm_crtc_helper_add(&priv->crtc, &ingenic_drm_crtc_helper_funcs);
 
-	ret = drm_crtc_init_with_planes(drm, &priv->crtc, &priv->f1,
+	ret = drm_crtc_init_with_planes(drm, &priv->crtc, primary,
 					NULL, &ingenic_drm_crtc_funcs, NULL);
 	if (ret) {
 		dev_err(dev, "Failed to init CRTC: %i\n", ret);