drm/i915: Add .atomic_{get, set}_property() entrypoints to planes

When we flip on the DRIVER_ATOMIC bit, the DRM core will start calling
this entrypoint to set and lookup driver-specific plane property values,
rather than maintaining a shadow copy in object->properties.

Note that although we add these functions to the plane vtable, they will
not yet be called.  Future patches that switch our .set_property()
handler and/or enable full atomic functionality are required before
these code paths will be executed.

Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Ander Conselvan de Oliveira <conselvan2@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/intel_atomic_plane.c b/drivers/gpu/drm/i915/intel_atomic_plane.c
index d9d4306..4a3914f 100644 (file)
--- a/drivers/gpu/drm/i915/intel_atomic_plane.c
+++ b/drivers/gpu/drm/i915/intel_atomic_plane.c
@@ -177,3 +177,61 @@ const struct drm_plane_helper_funcs intel_plane_helper_funcs = {
        .atomic_update = intel_plane_atomic_update,
 };
 
+/**
+ * intel_plane_atomic_get_property - fetch plane property value
+ * @plane: plane to fetch property for
+ * @state: state containing the property value
+ * @property: property to look up
+ * @val: pointer to write property value into
+ *
+ * The DRM core does not store shadow copies of properties for
+ * atomic-capable drivers.  This entrypoint is used to fetch
+ * the current value of a driver-specific plane property.
+ */
+int
+intel_plane_atomic_get_property(struct drm_plane *plane,
+                               const struct drm_plane_state *state,
+                               struct drm_property *property,
+                               uint64_t *val)
+{
+       struct drm_mode_config *config = &plane->dev->mode_config;
+
+       if (property == config->rotation_property) {
+               *val = state->rotation;
+       } else {
+               DRM_DEBUG_KMS("Unknown plane property '%s'\n", property->name);
+               return -EINVAL;
+       }
+
+       return 0;
+}
+
+/**
+ * intel_plane_atomic_set_property - set plane property value
+ * @plane: plane to set property for
+ * @state: state to update property value in
+ * @property: property to set
+ * @val: value to set property to
+ *
+ * Writes the specified property value for a plane into the provided atomic
+ * state object.
+ *
+ * Returns 0 on success, -EINVAL on unrecognized properties
+ */
+int
+intel_plane_atomic_set_property(struct drm_plane *plane,
+                               struct drm_plane_state *state,
+                               struct drm_property *property,
+                               uint64_t val)
+{
+       struct drm_mode_config *config = &plane->dev->mode_config;
+
+       if (property == config->rotation_property) {
+               state->rotation = val;
+       } else {
+               DRM_DEBUG_KMS("Unknown plane property '%s'\n", property->name);
+               return -EINVAL;
+       }
+
+       return 0;
+}

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index ce71fc5..0cdcf9b 100644 (file)
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -12054,6 +12054,8 @@ const struct drm_plane_funcs intel_plane_funcs = {
        .disable_plane = drm_plane_helper_disable,
        .destroy = intel_plane_destroy,
        .set_property = intel_plane_set_property,
+       .atomic_get_property = intel_plane_atomic_get_property,
+       .atomic_set_property = intel_plane_atomic_set_property,
        .atomic_duplicate_state = intel_plane_duplicate_state,
        .atomic_destroy_state = intel_plane_destroy_state,
 

diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 4edf771..3d65e8b 100644 (file)
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -945,6 +945,14 @@ int intel_prepare_plane_fb(struct drm_plane *plane,
                           struct drm_framebuffer *fb);
 void intel_cleanup_plane_fb(struct drm_plane *plane,
                            struct drm_framebuffer *fb);
+int intel_plane_atomic_get_property(struct drm_plane *plane,
+                                   const struct drm_plane_state *state,
+                                   struct drm_property *property,
+                                   uint64_t *val);
+int intel_plane_atomic_set_property(struct drm_plane *plane,
+                                   struct drm_plane_state *state,
+                                   struct drm_property *property,
+                                   uint64_t val);
 
 /* shared dpll functions */
 struct intel_shared_dpll *intel_crtc_to_shared_dpll(struct intel_crtc *crtc);