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drm/sun4i: Add alpha property for sun8i UI layer

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DE2.0 and DE3.0 UI layers supports plane-global alpha channel.
Add alpha property to the DRM plane and connect it to the
corresponding registers in mixer.

Signed-off-by: Roman Stratiienko <r.stratiienko@gmail.com>
Reviewed-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20210128113940.347013-2-r.stratiienko@gmail.com
This commit is contained in:
Roman Stratiienko
2021-01-28 13:39:39 +02:00
committed by Maxime Ripard
parent bce724fa58
commit 0ee29373f0
2 changed files with 34 additions and 0 deletions
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29
drivers/gpu/drm/sun4i/sun8i_ui_layer.c
View File

@@ -72,6 +72,27 @@ static void sun8i_ui_layer_enable(struct sun8i_mixer *mixer, int channel,
}
}
static void sun8i_ui_layer_update_alpha(struct sun8i_mixer *mixer, int channel,
int overlay, struct drm_plane *plane)
{
u32 mask, val, ch_base;
ch_base = sun8i_channel_base(mixer, channel);
mask = SUN8I_MIXER_CHAN_UI_LAYER_ATTR_ALPHA_MODE_MASK |
SUN8I_MIXER_CHAN_UI_LAYER_ATTR_ALPHA_MASK;
val = SUN8I_MIXER_CHAN_UI_LAYER_ATTR_ALPHA(plane->state->alpha >> 8);
val |= (plane->state->alpha == DRM_BLEND_ALPHA_OPAQUE) ?
SUN8I_MIXER_CHAN_UI_LAYER_ATTR_ALPHA_MODE_PIXEL :
SUN8I_MIXER_CHAN_UI_LAYER_ATTR_ALPHA_MODE_COMBINED;
regmap_update_bits(mixer->engine.regs,
SUN8I_MIXER_CHAN_UI_LAYER_ATTR(ch_base, overlay),
mask, val);
}
static int sun8i_ui_layer_update_coord(struct sun8i_mixer *mixer, int channel,
int overlay, struct drm_plane *plane,
unsigned int zpos)
@@ -290,6 +311,8 @@ static void sun8i_ui_layer_atomic_update(struct drm_plane *plane,
sun8i_ui_layer_update_coord(mixer, layer->channel,
layer->overlay, plane, zpos);
sun8i_ui_layer_update_alpha(mixer, layer->channel,
layer->overlay, plane);
sun8i_ui_layer_update_formats(mixer, layer->channel,
layer->overlay, plane);
sun8i_ui_layer_update_buffer(mixer, layer->channel,
@@ -367,6 +390,12 @@ struct sun8i_ui_layer *sun8i_ui_layer_init_one(struct drm_device *drm,
plane_cnt = mixer->cfg->ui_num + mixer->cfg->vi_num;
ret = drm_plane_create_alpha_property(&layer->plane);
if (ret) {
dev_err(drm->dev, "Couldn't add alpha property\n");
return ERR_PTR(ret);
}
ret = drm_plane_create_zpos_property(&layer->plane, channel,
0, plane_cnt - 1);
if (ret) {

5
drivers/gpu/drm/sun4i/sun8i_ui_layer.h
View File

@@ -40,6 +40,11 @@
#define SUN8I_MIXER_CHAN_UI_LAYER_ATTR_FBFMT_MASK GENMASK(12, 8)
#define SUN8I_MIXER_CHAN_UI_LAYER_ATTR_FBFMT_OFFSET 8
#define SUN8I_MIXER_CHAN_UI_LAYER_ATTR_ALPHA_MASK GENMASK(31, 24)
#define SUN8I_MIXER_CHAN_UI_LAYER_ATTR_ALPHA(x) ((x) << 24)
#define SUN8I_MIXER_CHAN_UI_LAYER_ATTR_ALPHA_MODE_PIXEL ((0) << 1)
#define SUN8I_MIXER_CHAN_UI_LAYER_ATTR_ALPHA_MODE_LAYER ((1) << 1)
#define SUN8I_MIXER_CHAN_UI_LAYER_ATTR_ALPHA_MODE_COMBINED ((2) << 1)
struct sun8i_mixer;