When using C8 color mode, make sure that the palette is always uploaded before a frame; otherwise the very first frame will have wrong colors.
Do that by changing the link order of the DMA descriptors.
Signed-off-by: Paul Cercueil paul@crapouillou.net --- drivers/gpu/drm/ingenic/ingenic-drm-drv.c | 53 ++++++++++++++++++++--- 1 file changed, 47 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c index cbc76cede99e..6f860f2e11c4 100644 --- a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c +++ b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c @@ -66,6 +66,7 @@ struct jz_soc_info {
struct ingenic_drm_private_state { struct drm_private_state base; + bool use_palette; };
struct ingenic_drm { @@ -113,6 +114,30 @@ to_ingenic_drm_priv_state(struct drm_private_state *state) return container_of(state, struct ingenic_drm_private_state, base); }
+static struct ingenic_drm_private_state * +ingenic_drm_get_priv_state(struct ingenic_drm *priv, struct drm_atomic_state *state) +{ + struct drm_private_state *priv_state; + + priv_state = drm_atomic_get_private_obj_state(state, &priv->private_obj); + if (IS_ERR(priv_state)) + return ERR_CAST(priv_state); + + return to_ingenic_drm_priv_state(priv_state); +} + +static struct ingenic_drm_private_state * +ingenic_drm_get_new_priv_state(struct ingenic_drm *priv, struct drm_atomic_state *state) +{ + struct drm_private_state *priv_state; + + priv_state = drm_atomic_get_new_private_obj_state(state, &priv->private_obj); + if (!priv_state) + return NULL; + + return to_ingenic_drm_priv_state(priv_state); +} + static bool ingenic_drm_writeable_reg(struct device *dev, unsigned int reg) { switch (reg) { @@ -183,11 +208,18 @@ static void ingenic_drm_crtc_atomic_enable(struct drm_crtc *crtc, struct drm_atomic_state *state) { struct ingenic_drm *priv = drm_crtc_get_priv(crtc); + struct ingenic_drm_private_state *priv_state; + unsigned int next_id; + + priv_state = ingenic_drm_get_new_priv_state(priv, state); + if (WARN_ON(!priv_state)) + return;
regmap_write(priv->map, JZ_REG_LCD_STATE, 0);
- /* Set address of our DMA descriptor chain */ - regmap_write(priv->map, JZ_REG_LCD_DA0, dma_hwdesc_addr(priv, 0)); + /* Set addresses of our DMA descriptor chains */ + next_id = priv_state->use_palette ? HWDESC_PALETTE : 0; + regmap_write(priv->map, JZ_REG_LCD_DA0, dma_hwdesc_addr(priv, next_id)); regmap_write(priv->map, JZ_REG_LCD_DA1, dma_hwdesc_addr(priv, 1));
regmap_update_bits(priv->map, JZ_REG_LCD_CTRL, @@ -393,6 +425,7 @@ static int ingenic_drm_plane_atomic_check(struct drm_plane *plane, struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state, plane); struct ingenic_drm *priv = drm_device_get_priv(plane->dev); + struct ingenic_drm_private_state *priv_state; struct drm_crtc_state *crtc_state; struct drm_crtc *crtc = new_plane_state->crtc ?: old_plane_state->crtc; int ret; @@ -405,6 +438,10 @@ static int ingenic_drm_plane_atomic_check(struct drm_plane *plane, if (WARN_ON(!crtc_state)) return -EINVAL;
+ priv_state = ingenic_drm_get_priv_state(priv, state); + if (IS_ERR(priv_state)) + return PTR_ERR(priv_state); + ret = drm_atomic_helper_check_plane_state(new_plane_state, crtc_state, DRM_PLANE_HELPER_NO_SCALING, DRM_PLANE_HELPER_NO_SCALING, @@ -423,6 +460,9 @@ static int ingenic_drm_plane_atomic_check(struct drm_plane *plane, (new_plane_state->src_h >> 16) != new_plane_state->crtc_h)) return -EINVAL;
+ priv_state->use_palette = new_plane_state->fb && + new_plane_state->fb->format->format == DRM_FORMAT_C8; + /* * Require full modeset if enabling or disabling a plane, or changing * its position, size or depth. @@ -583,6 +623,7 @@ static void ingenic_drm_plane_atomic_update(struct drm_plane *plane, struct drm_plane_state *newstate = drm_atomic_get_new_plane_state(state, plane); struct drm_plane_state *oldstate = drm_atomic_get_old_plane_state(state, plane); unsigned int width, height, cpp, next_id, plane_id; + struct ingenic_drm_private_state *priv_state; struct drm_crtc_state *crtc_state; struct ingenic_dma_hwdesc *hwdesc; dma_addr_t addr; @@ -600,19 +641,19 @@ static void ingenic_drm_plane_atomic_update(struct drm_plane *plane, height = newstate->src_h >> 16; cpp = newstate->fb->format->cpp[0];
- hwdesc = &priv->dma_hwdescs->hwdesc[plane_id]; + priv_state = ingenic_drm_get_new_priv_state(priv, state); + next_id = (priv_state && priv_state->use_palette) ? HWDESC_PALETTE : plane_id;
+ hwdesc = &priv->dma_hwdescs->hwdesc[plane_id]; hwdesc->addr = addr; hwdesc->cmd = JZ_LCD_CMD_EOF_IRQ | (width * height * cpp / 4); + hwdesc->next = dma_hwdesc_addr(priv, next_id);
if (drm_atomic_crtc_needs_modeset(crtc_state)) { fourcc = newstate->fb->format->format;
ingenic_drm_plane_config(priv->dev, plane, fourcc);
- next_id = fourcc == DRM_FORMAT_C8 ? HWDESC_PALETTE : 0; - priv->dma_hwdescs->hwdesc[0].next = dma_hwdesc_addr(priv, next_id); - crtc_state->color_mgmt_changed = fourcc == DRM_FORMAT_C8; }