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drm/atomic: Add support for custom scaling mode properties, v2

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Some connectors may not allow all scaling mode properties, this function will allow
creating the scaling mode property with only the supported subset. It also wires up
this state for atomic.

This will make it possible to convert i915 connectors to atomic.

Changes since v1:
 - Add DRM_MODE_PROP_ENUM flag to drm_property_create
 - Use the correct index in drm_property_add_enum.
 - Add DocBook for function (Sean Paul).
 - Warn if less than 2 valid scaling modes are passed.
 - Remove level of indent. (Sean Paul)

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170501133804.8116-3-maarten.lankhorst@linux.intel.com
[mlankhorst: Rename function, fix docbook issues]
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Maarten Lankhorst
2017-05-01 15:37:54 +02:00
parent 0e9f25d0e1
commit 8f6e1e22e7
3 changed files with 80 additions and 1 deletions
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4
drivers/gpu/drm/drm_atomic.c
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@@ -1190,6 +1190,8 @@ int drm_atomic_connector_set_property(struct drm_connector *connector,
state->link_status = val;
} else if (property == config->aspect_ratio_property) {
state->picture_aspect_ratio = val;
} else if (property == connector->scaling_mode_property) {
state->scaling_mode = val;
} else if (connector->funcs->atomic_set_property) {
return connector->funcs->atomic_set_property(connector,
state, property, val);
@@ -1268,6 +1270,8 @@ drm_atomic_connector_get_property(struct drm_connector *connector,
*val = state->link_status;
} else if (property == config->aspect_ratio_property) {
*val = state->picture_aspect_ratio;
} else if (property == connector->scaling_mode_property) {
*val = state->scaling_mode;
} else if (connector->funcs->atomic_get_property) {
return connector->funcs->atomic_get_property(connector,
state, property, val);