On Wed, Jan 20, 2021 at 1:36 PM Paul Cercueil paul@crapouillou.net 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@vger.kernel.org # v5.8+ Signed-off-by: Paul Cercueil paul@crapouillou.net

Does what it says on the tin^Wcommit message.

Acked-by: Daniel Vetter daniel.vetter@ffwll.ch

---

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 158433b4c084..963dcbfeaba2 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);
  

-- 2.29.2