Hi Paul,
Thank you for the patch.
On Sun, Jan 24, 2021 at 08:55:52AM +0000, Paul Cercueil wrote:
> 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@xxxxxxxxxxxxxxx> # v5.8+
> Signed-off-by: Paul Cercueil <paul@xxxxxxxxxxxxxxx>
> Acked-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
I don't have much knowledge about this platform, but the change looks
reasonable to me.
Acked-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/ingenic/ingenic-drm-drv.c | 11 +++++++----
> 1 file changed, 7 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
> index b23011c1c5d9..59ce43862e16 100644
> --- a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
> +++ b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
> @@ -554,7 +554,7 @@ static void ingenic_drm_plane_atomic_update(struct drm_plane *plane,
> 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_hwdescs->hwdesc_f0;
> else
> hwdesc = &priv->dma_hwdescs->hwdesc_f1;
> @@ -826,6 +826,7 @@ 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;
> @@ -940,9 +941,11 @@ 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,
> @@ -954,7 +957,7 @@ 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);
--
Regards,
Laurent Pinchart
