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drm/sun4i: backend: Add support for zpos

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Our various planes have a configurable zpos, that combined with the pipes
allow to configure the composition.

Since the interaction between the pipes, zpos and alphas framebuffers is
not trivial, let's just enable the zpos as an immutable property for now,
and use that zpos in our atomic_update part.

Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Link: https://patchwork.freedesktop.org/patch/msgid/b006853e908bd06661c5bc1f2191121523bce0e4.1516617243.git-series.maxime.ripard@free-electrons.com
This commit is contained in:
Maxime Ripard 2017-05-01 10:52:32 +02:00
parent 2bebcc4564
commit 47a05f4a68
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GPG key ID: D2B4C094214DAF74
4 changed files with 24 additions and 0 deletions
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15
drivers/gpu/drm/sun4i/sun4i_backend.c
View file

@ -271,6 +271,21 @@ int sun4i_backend_update_layer_buffer(struct sun4i_backend *backend,
return 0;
}
int sun4i_backend_update_layer_zpos(struct sun4i_backend *backend, int layer,
struct drm_plane *plane)
{
struct drm_plane_state *state = plane->state;
unsigned int priority = state->normalized_zpos;
DRM_DEBUG_DRIVER("Setting layer %d's priority to %d\n", layer, priority);
regmap_update_bits(backend->engine.regs, SUN4I_BACKEND_ATTCTL_REG0(layer),
SUN4I_BACKEND_ATTCTL_REG0_LAY_PRISEL_MASK,
SUN4I_BACKEND_ATTCTL_REG0_LAY_PRISEL(priority));
return 0;
}
static bool sun4i_backend_plane_uses_scaler(struct drm_plane_state *state)
{
u16 src_h = state->src_h >> 16;

2
drivers/gpu/drm/sun4i/sun4i_backend.h
View file

@ -182,5 +182,7 @@ int sun4i_backend_update_layer_buffer(struct sun4i_backend *backend,
int layer, struct drm_plane *plane);
int sun4i_backend_update_layer_frontend(struct sun4i_backend *backend,
int layer, uint32_t in_fmt);
int sun4i_backend_update_layer_zpos(struct sun4i_backend *backend,
int layer, struct drm_plane *plane);
#endif /* _SUN4I_BACKEND_H_ */

4
drivers/gpu/drm/sun4i/sun4i_framebuffer.c
View file

@ -29,6 +29,10 @@ static int sun4i_de_atomic_check(struct drm_device *dev,
if (ret)
return ret;
ret = drm_atomic_normalize_zpos(dev, state);
if (ret)
return ret;
return drm_atomic_helper_check_planes(dev, state);
}

3
drivers/gpu/drm/sun4i/sun4i_layer.c
View file

@ -115,6 +115,7 @@ static void sun4i_backend_layer_atomic_update(struct drm_plane *plane,
}
sun4i_backend_update_layer_coord(backend, layer->id, plane);
sun4i_backend_update_layer_zpos(backend, layer->id, plane);
sun4i_backend_layer_enable(backend, layer->id, true);
}
@ -237,6 +238,8 @@ struct drm_plane **sun4i_layers_init(struct drm_device *drm,
return ERR_CAST(layer);
};
drm_plane_create_zpos_immutable_property(&layer->plane, i);
DRM_DEBUG_DRIVER("Assigning %s plane to pipe %d\n",
i ? "overlay" : "primary", plane->pipe);
regmap_update_bits(engine->regs, SUN4I_BACKEND_ATTCTL_REG0(i),