[Intel-gfx] [RFC v4 2/8] drm: Add Plane Degamma properties
Alexandru-Cosmin Gheorghe
Alexandru-Cosmin.Gheorghe at arm.com
Tue Aug 21 09:38:06 UTC 2018
Hi Uma,
On Fri, Aug 17, 2018 at 07:48:45PM +0530, Uma Shankar wrote:
> Add Plane Degamma as a blob property and plane degamma size as
> a range property.
>
> v2: Rebase
>
> v3: Fixed Sean, Paul's review comments. Moved the property from
> mode_config to drm_plane. Created a helper function to instantiate
> these properties and removed from drm_mode_create_standard_properties
> Added property documentation as suggested by Daniel, Vetter.
>
> v4: Rebase
>
> Signed-off-by: Uma Shankar <uma.shankar at intel.com>
> ---
> Documentation/gpu/drm-kms.rst | 9 +++++++++
> drivers/gpu/drm/drm_atomic.c | 13 +++++++++++++
> drivers/gpu/drm/drm_atomic_helper.c | 6 ++++++
> drivers/gpu/drm/drm_plane.c | 35 +++++++++++++++++++++++++++++++++++
> include/drm/drm_plane.h | 24 ++++++++++++++++++++++++
> 5 files changed, 87 insertions(+)
>
> diff --git a/Documentation/gpu/drm-kms.rst b/Documentation/gpu/drm-kms.rst
> index 5dee6b8..8b10b12 100644
> --- a/Documentation/gpu/drm-kms.rst
> +++ b/Documentation/gpu/drm-kms.rst
> @@ -551,6 +551,15 @@ Color Management Properties
> .. kernel-doc:: drivers/gpu/drm/drm_color_mgmt.c
> :export:
>
> +Plane Color Management Properties
> +---------------------------
> +
> +.. kernel-doc:: drivers/gpu/drm/drm_plane.c
> + :doc: degamma_lut_property
> +
> +.. kernel-doc:: drivers/gpu/drm/drm_plane.c
> + :doc: degamma_lut_size_property
> +
> Tile Group Property
> -------------------
>
> diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
> index 3eb061e..f8cad9b 100644
> --- a/drivers/gpu/drm/drm_atomic.c
> +++ b/drivers/gpu/drm/drm_atomic.c
> @@ -857,6 +857,8 @@ static int drm_atomic_plane_set_property(struct drm_plane *plane,
> {
> struct drm_device *dev = plane->dev;
> struct drm_mode_config *config = &dev->mode_config;
> + bool replaced = false;
> + int ret;
>
> if (property == config->prop_fb_id) {
> struct drm_framebuffer *fb = drm_framebuffer_lookup(dev, NULL, val);
> @@ -908,6 +910,13 @@ static int drm_atomic_plane_set_property(struct drm_plane *plane,
> state->color_encoding = val;
> } else if (property == plane->color_range_property) {
> state->color_range = val;
> + } else if (property == plane->degamma_lut_property) {
> + ret = drm_atomic_replace_property_blob_from_id(dev,
> + &state->degamma_lut,
> + val, -1, sizeof(struct drm_color_lut),
> + &replaced);
> + state->color_mgmt_changed |= replaced;
> + return ret;
> } else if (plane->funcs->atomic_set_property) {
> return plane->funcs->atomic_set_property(plane, state,
> property, val);
> @@ -976,6 +985,9 @@ static int drm_atomic_plane_set_property(struct drm_plane *plane,
> *val = state->color_encoding;
> } else if (property == plane->color_range_property) {
> *val = state->color_range;
> + } else if (property == plane->degamma_lut_property) {
> + *val = (state->degamma_lut) ?
> + state->degamma_lut->base.id : 0;
> } else if (plane->funcs->atomic_get_property) {
> return plane->funcs->atomic_get_property(plane, state, property, val);
> } else {
> @@ -1116,6 +1128,7 @@ static void drm_atomic_plane_print_state(struct drm_printer *p,
> drm_get_color_encoding_name(state->color_encoding));
> drm_printf(p, "\tcolor-range=%s\n",
> drm_get_color_range_name(state->color_range));
> + drm_printf(p, "\tcolor_mgmt_changed=%d\n", state->color_mgmt_changed);
>
> if (plane->funcs->atomic_print_state)
> plane->funcs->atomic_print_state(p, state);
> diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
> index 38ce9a3..67c5b51 100644
> --- a/drivers/gpu/drm/drm_atomic_helper.c
> +++ b/drivers/gpu/drm/drm_atomic_helper.c
> @@ -3613,6 +3613,10 @@ void __drm_atomic_helper_plane_duplicate_state(struct drm_plane *plane,
>
> state->fence = NULL;
> state->commit = NULL;
> +
> + if (state->degamma_lut)
> + drm_property_blob_get(state->degamma_lut);
> + state->color_mgmt_changed = false;
> }
> EXPORT_SYMBOL(__drm_atomic_helper_plane_duplicate_state);
>
> @@ -3657,6 +3661,8 @@ void __drm_atomic_helper_plane_destroy_state(struct drm_plane_state *state)
>
> if (state->commit)
> drm_crtc_commit_put(state->commit);
> +
> + drm_property_blob_put(state->degamma_lut);
> }
> EXPORT_SYMBOL(__drm_atomic_helper_plane_destroy_state);
>
> diff --git a/drivers/gpu/drm/drm_plane.c b/drivers/gpu/drm/drm_plane.c
> index cd71fd0..03e0560 100644
> --- a/drivers/gpu/drm/drm_plane.c
> +++ b/drivers/gpu/drm/drm_plane.c
> @@ -478,6 +478,41 @@ int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
> }
> EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
>
> +/**
> + * DOC: degamma_lut_property
> + *
> + * degamma_lut_property:
> + * Blob property which allows a userspace to provide LUT values
> + * to apply degamma curve using the h/w plane degamma processing
> + * engine, thereby making the content as linear for further color
> + * processing.
> + *
> + * degamma_lut_size_property:
> + * Range Property to indicate size of the plane degamma LUT.
> + */
> +int drm_plane_color_create_prop(struct drm_device *dev,
> + struct drm_plane *plane)
> +{
> + struct drm_property *prop;
> +
> + prop = drm_property_create(dev,
> + DRM_MODE_PROP_BLOB,
> + "PLANE_DEGAMMA_LUT", 0);
> + if (!prop)
> + return -ENOMEM;
> + plane->degamma_lut_property = prop;
> +
> + prop = drm_property_create_range(dev,
> + DRM_MODE_PROP_IMMUTABLE,
> + "PLANE_DEGAMMA_LUT_SIZE", 0, UINT_MAX);
> + if (!prop)
> + return -ENOMEM;
> + plane->degamma_lut_size_property = prop;
> +
> + return 0;
> +}
> +EXPORT_SYMBOL(drm_plane_color_create_prop);
> +
> int drm_mode_getplane_res(struct drm_device *dev, void *data,
> struct drm_file *file_priv)
> {
> diff --git a/include/drm/drm_plane.h b/include/drm/drm_plane.h
> index 8a152dc..28357ac 100644
> --- a/include/drm/drm_plane.h
> +++ b/include/drm/drm_plane.h
> @@ -174,6 +174,14 @@ struct drm_plane_state {
> */
> bool visible;
>
> + /* @degamma_lut:
> + *
> + * Lookup table for converting framebuffer pixel data before apply the
> + * color conversion matrix @ctm. See drm_plane_enable_color_mgmt(). The
> + * blob (if not NULL) is an array of &struct drm_color_lut_ext.
> + */
> + struct drm_property_blob *degamma_lut;
> +
> /**
> * @commit: Tracks the pending commit to prevent use-after-free conditions,
> * and for async plane updates.
> @@ -184,6 +192,8 @@ struct drm_plane_state {
>
> /** @state: backpointer to global drm_atomic_state */
> struct drm_atomic_state *state;
> +
> + u8 color_mgmt_changed : 1;
> };
>
> static inline struct drm_rect
> @@ -676,6 +686,18 @@ struct drm_plane {
> * See drm_plane_create_color_properties().
> */
> struct drm_property *color_range_property;
> +
> + /**
> + * @degamma_lut_property: Optional Plane property to set the LUT
> + * used to convert the framebuffer's colors to linear gamma.
> + */
> + struct drm_property *degamma_lut_property;
> +
> + /**
> + * @degamma_lut_size_property: Optional Plane property for the
> + * size of the degamma LUT as supported by the driver (read-only).
> + */
> + struct drm_property *degamma_lut_size_property;
> };
>
> #define obj_to_plane(x) container_of(x, struct drm_plane, base)
> @@ -725,6 +747,8 @@ static inline u32 drm_plane_mask(const struct drm_plane *plane)
> int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
> struct drm_property *property,
> uint64_t value);
> +int drm_plane_color_create_prop(struct drm_device *dev,
> + struct drm_plane *plane);
>
> /**
> * drm_plane_find - find a &drm_plane
> --
> 1.9.1
>
> _______________________________________________
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> dri-devel at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
Reviewed-by: Alexandru Gheorghe <alexandru-cosmin.gheorghe at arm.com>
--
Cheers,
Alex G
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