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@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/ingenic/ingenic-drm-drv.c | 45 ++++++++++++++++++-----
1 file changed, 35 insertions(+), 10 deletions(-)
diff --git a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
index 5ba3283da97d..ced2109e8f35 100644
--- a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
+++ b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
@@ -68,6 +68,7 @@ struct ingenic_drm_private_state {
struct drm_private_state base;
bool no_vblank;
+ bool use_palette;
};
struct ingenic_drm {
@@ -185,6 +186,13 @@ static inline dma_addr_t dma_hwdesc_addr(const struct ingenic_drm *priv, bool us
return priv->dma_hwdescs_phys + offset;
}
+static inline dma_addr_t dma_hwdesc_pal_addr(const struct ingenic_drm *priv)
+{
+ u32 offset = offsetof(struct ingenic_dma_hwdescs, hwdesc_pal);
+
+ return priv->dma_hwdescs_phys + offset;
+}
+
static int ingenic_drm_update_pixclk(struct notifier_block *nb,
unsigned long action,
void *data)
@@ -207,11 +215,19 @@ 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;
+
+ 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));
+ if (priv_state->use_palette)
+ regmap_write(priv->map, JZ_REG_LCD_DA0, dma_hwdesc_pal_addr(priv));
+ else
+ regmap_write(priv->map, JZ_REG_LCD_DA0, dma_hwdesc_addr(priv, 0));
regmap_write(priv->map, JZ_REG_LCD_DA1, dma_hwdesc_addr(priv, 1));
regmap_update_bits(priv->map, JZ_REG_LCD_CTRL,
@@ -422,6 +438,7 @@ 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;
@@ -434,6 +451,10 @@ 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,
@@ -452,6 +473,9 @@ 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.
@@ -611,10 +635,11 @@ static void ingenic_drm_plane_atomic_update(struct drm_plane *plane,
struct ingenic_drm *priv = drm_device_get_priv(plane->dev);
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);
+ struct ingenic_drm_private_state *priv_state;
struct drm_crtc_state *crtc_state;
struct ingenic_dma_hwdesc *hwdesc;
- unsigned int width, height, cpp, offset;
- dma_addr_t addr;
+ unsigned int width, height, cpp;
+ dma_addr_t addr, next_addr;
bool use_f1;
u32 fourcc;
@@ -630,23 +655,23 @@ static void ingenic_drm_plane_atomic_update(struct drm_plane *plane,
height = newstate->src_h >> 16;
cpp = newstate->fb->format->cpp[0];
+ priv_state = ingenic_drm_get_new_priv_state(priv, state);
+ if (priv_state && priv_state->use_palette)
+ next_addr = dma_hwdesc_pal_addr(priv);
+ else
+ next_addr = dma_hwdesc_addr(priv, use_f1);
+
hwdesc = &priv->dma_hwdescs->hwdesc[use_f1];
hwdesc->addr = addr;
hwdesc->cmd = JZ_LCD_CMD_EOF_IRQ | (width * height * cpp / 4);
+ hwdesc->next = next_addr;
if (drm_atomic_crtc_needs_modeset(crtc_state)) {
fourcc = newstate->fb->format->format;
ingenic_drm_plane_config(priv->dev, plane, fourcc);
- if (fourcc == DRM_FORMAT_C8)
- offset = offsetof(struct ingenic_dma_hwdescs, hwdesc_pal);
- else
- offset = offsetof(struct ingenic_dma_hwdescs, hwdesc[0]);
-
- priv->dma_hwdescs->hwdesc[0].next = priv->dma_hwdescs_phys + offset;
-
crtc_state->color_mgmt_changed = fourcc == DRM_FORMAT_C8;
}
--
2.30.2
