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Subject[PATCH 06/17] drm/sun4i: Add multi plane support to DE2 driver
Date
Support for multiple UI planes can now be easily enabled just by adding
more planes with different index.

For now, add immutable zpos property.

Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
---
drivers/gpu/drm/sun4i/sun8i_layer.c | 38 +++++++++++++++++--------------------
1 file changed, 17 insertions(+), 21 deletions(-)

diff --git a/drivers/gpu/drm/sun4i/sun8i_layer.c b/drivers/gpu/drm/sun4i/sun8i_layer.c
index 511d2f8afef6..371d6b359262 100644
--- a/drivers/gpu/drm/sun4i/sun8i_layer.c
+++ b/drivers/gpu/drm/sun4i/sun8i_layer.c
@@ -22,12 +22,6 @@
#include "sun8i_layer.h"
#include "sun8i_mixer.h"

-struct sun8i_plane_desc {
- enum drm_plane_type type;
- const uint32_t *formats;
- uint32_t nformats;
-};
-
static int sun8i_mixer_layer_atomic_check(struct drm_plane *plane,
struct drm_plane_state *state)
{
@@ -100,35 +94,38 @@ static const uint32_t sun8i_mixer_layer_formats[] = {
DRM_FORMAT_XRGB8888,
};

-static const struct sun8i_plane_desc sun8i_mixer_planes[] = {
- {
- .type = DRM_PLANE_TYPE_PRIMARY,
- .formats = sun8i_mixer_layer_formats,
- .nformats = ARRAY_SIZE(sun8i_mixer_layer_formats),
- },
-};
-
static struct sun8i_layer *sun8i_layer_init_one(struct drm_device *drm,
struct sun8i_mixer *mixer,
- const struct sun8i_plane_desc *plane)
+ int index)
{
struct sun8i_layer *layer;
+ enum drm_plane_type type;
int ret;

layer = devm_kzalloc(drm->dev, sizeof(*layer), GFP_KERNEL);
if (!layer)
return ERR_PTR(-ENOMEM);

+ type = index == 0 ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
+
/* possible crtcs are set later */
ret = drm_universal_plane_init(drm, &layer->plane, 0,
&sun8i_mixer_layer_funcs,
- plane->formats, plane->nformats,
- NULL, plane->type, NULL);
+ sun8i_mixer_layer_formats,
+ ARRAY_SIZE(sun8i_mixer_layer_formats),
+ NULL, type, NULL);
if (ret) {
dev_err(drm->dev, "Couldn't initialize layer\n");
return ERR_PTR(ret);
}

+ /* fixed zpos for now */
+ ret = drm_plane_create_zpos_immutable_property(&layer->plane, index);
+ if (ret) {
+ dev_err(drm->dev, "Couldn't add zpos property\n");
+ return ERR_PTR(ret);
+ }
+
drm_plane_helper_add(&layer->plane,
&sun8i_mixer_layer_helper_funcs);
layer->mixer = mixer;
@@ -143,16 +140,15 @@ struct drm_plane **sun8i_layers_init(struct drm_device *drm,
struct sun8i_mixer *mixer = engine_to_sun8i_mixer(engine);
int i;

- planes = devm_kcalloc(drm->dev, ARRAY_SIZE(sun8i_mixer_planes) + 1,
+ planes = devm_kcalloc(drm->dev, mixer->cfg->ui_num + 1,
sizeof(*planes), GFP_KERNEL);
if (!planes)
return ERR_PTR(-ENOMEM);

- for (i = 0; i < ARRAY_SIZE(sun8i_mixer_planes); i++) {
- const struct sun8i_plane_desc *plane = &sun8i_mixer_planes[i];
+ for (i = 0; i < mixer->cfg->ui_num; i++) {
struct sun8i_layer *layer;

- layer = sun8i_layer_init_one(drm, mixer, plane);
+ layer = sun8i_layer_init_one(drm, mixer, i);
if (IS_ERR(layer)) {
dev_err(drm->dev, "Couldn't initialize %s plane\n",
i ? "overlay" : "primary");
--
2.15.0
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