The patch below does not apply to the 5.10-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
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: [PATCH] drm/ingenic: Fix non-OSD mode
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@cr...
diff --git a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c index 54ee2cb61f3c..d60e1eefc9d1 100644 --- a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c +++ b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c @@ -561,7 +561,7 @@ static void ingenic_drm_plane_atomic_update(struct drm_plane *plane, height = newstate->src_h >> 16; cpp = newstate->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_hwdescs->hwdesc_f0; else hwdesc = &priv->dma_hwdescs->hwdesc_f1; @@ -833,6 +833,7 @@ static int ingenic_drm_bind(struct device *dev, bool has_components) 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; @@ -947,9 +948,11 @@ static int ingenic_drm_bind(struct device *dev, bool has_components) 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, priv->soc_info->formats_f1, priv->soc_info->num_formats_f1, @@ -961,7 +964,7 @@ static int ingenic_drm_bind(struct device *dev, bool has_components)
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);