[mutter] kms/plane: Find property IDs to be used for atomic modesetting

[Marge Bot <marge-bot src gnome org>]

commit a9ae20232702b12ed4d5f255bdb753508fde3942
Author: Jonas Ådahl <jadahl gmail com>
Date:   Mon Jul 13 23:27:30 2020 +0200

    kms/plane: Find property IDs to be used for atomic modesetting
    
    Currently undiscovered, as we haven't enabled the atomic modesetting
    capability, but lets get the infrastructure to get the property IDs in
    place.
    
    Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1488>

 src/backends/native/meta-kms-plane-private.h | 22 +++++++
 src/backends/native/meta-kms-plane.c         | 98 ++++++++++++++++++++++++++++
 2 files changed, 120 insertions(+)
---
diff --git a/src/backends/native/meta-kms-plane-private.h b/src/backends/native/meta-kms-plane-private.h
index 2a36d49173..7454cd2446 100644
--- a/src/backends/native/meta-kms-plane-private.h
+++ b/src/backends/native/meta-kms-plane-private.h
@@ -26,6 +26,22 @@
 #include "backends/native/meta-kms-plane.h"
 #include "backends/native/meta-kms-types.h"
 
+typedef enum _MetaKmsPlaneProp
+{
+  META_KMS_PLANE_PROP_TYPE = 0,
+  META_KMS_PLANE_PROP_SRC_X,
+  META_KMS_PLANE_PROP_SRC_Y,
+  META_KMS_PLANE_PROP_SRC_W,
+  META_KMS_PLANE_PROP_SRC_H,
+  META_KMS_PLANE_PROP_CRTC_X,
+  META_KMS_PLANE_PROP_CRTC_Y,
+  META_KMS_PLANE_PROP_CRTC_W,
+  META_KMS_PLANE_PROP_CRTC_H,
+  META_KMS_PLANE_PROP_FB_ID,
+  META_KMS_PLANE_PROP_CRTC_ID,
+  META_KMS_PLANE_N_PROPS
+} MetaKmsPlaneProp;
+
 MetaKmsPlane * meta_kms_plane_new (MetaKmsPlaneType         type,
                                    MetaKmsImplDevice       *impl_device,
                                    drmModePlane            *drm_plane,
@@ -34,4 +50,10 @@ MetaKmsPlane * meta_kms_plane_new (MetaKmsPlaneType         type,
 MetaKmsPlane * meta_kms_plane_new_fake (MetaKmsPlaneType  type,
                                         MetaKmsCrtc      *crtc);
 
+uint32_t meta_kms_plane_get_prop_id (MetaKmsPlane     *plane,
+                                     MetaKmsPlaneProp  prop);
+
+const char * meta_kms_plane_get_prop_name (MetaKmsPlane     *plane,
+                                           MetaKmsPlaneProp  prop);
+
 #endif /* META_KMS_PLANE_PRIVATE_H */
diff --git a/src/backends/native/meta-kms-plane.c b/src/backends/native/meta-kms-plane.c
index 1520770369..8348f37572 100644
--- a/src/backends/native/meta-kms-plane.c
+++ b/src/backends/native/meta-kms-plane.c
@@ -30,6 +30,11 @@
 #include "backends/native/meta-kms-impl-device.h"
 #include "backends/native/meta-kms-update-private.h"
 
+typedef struct _MetaKmsPlanePropTable
+{
+  MetaKmsProp props[META_KMS_PLANE_N_PROPS];
+} MetaKmsPlanePropTable;
+
 struct _MetaKmsPlane
 {
   GObject parent;
@@ -52,6 +57,8 @@ struct _MetaKmsPlane
    */
   GHashTable *formats_modifiers;
 
+  MetaKmsPlanePropTable prop_table;
+
   MetaKmsDevice *device;
 };
 
@@ -77,6 +84,20 @@ meta_kms_plane_get_plane_type (MetaKmsPlane *plane)
   return plane->type;
 }
 
+uint32_t
+meta_kms_plane_get_prop_id (MetaKmsPlane     *plane,
+                            MetaKmsPlaneProp  prop)
+{
+  return plane->prop_table.props[prop].prop_id;
+}
+
+const char *
+meta_kms_plane_get_prop_name (MetaKmsPlane     *plane,
+                              MetaKmsPlaneProp  prop)
+{
+  return plane->prop_table.props[prop].name;
+}
+
 void
 meta_kms_plane_update_set_rotation (MetaKmsPlane           *plane,
                                     MetaKmsPlaneAssignment *plane_assignment,
@@ -363,6 +384,81 @@ init_formats (MetaKmsPlane            *plane,
     }
 }
 
+static void
+init_properties (MetaKmsPlane            *plane,
+                 MetaKmsImplDevice       *impl_device,
+                 drmModePlane            *drm_plane,
+                 drmModeObjectProperties *drm_plane_props)
+{
+  MetaKmsPlanePropTable *prop_table = &plane->prop_table;
+
+  *prop_table = (MetaKmsPlanePropTable) {
+    .props = {
+      [META_KMS_PLANE_PROP_TYPE] =
+        {
+          .name = "type",
+          .type = DRM_MODE_PROP_ENUM,
+        },
+      [META_KMS_PLANE_PROP_SRC_X] =
+        {
+          .name = "SRC_X",
+          .type = DRM_MODE_PROP_RANGE,
+        },
+      [META_KMS_PLANE_PROP_SRC_Y] =
+        {
+          .name = "SRC_Y",
+          .type = DRM_MODE_PROP_RANGE,
+        },
+      [META_KMS_PLANE_PROP_SRC_W] =
+        {
+          .name = "SRC_W",
+          .type = DRM_MODE_PROP_RANGE,
+        },
+      [META_KMS_PLANE_PROP_SRC_H] =
+        {
+          .name = "SRC_H",
+          .type = DRM_MODE_PROP_RANGE,
+        },
+      [META_KMS_PLANE_PROP_CRTC_X] =
+        {
+          .name = "CRTC_X",
+          .type = DRM_MODE_PROP_SIGNED_RANGE,
+        },
+      [META_KMS_PLANE_PROP_CRTC_Y] =
+        {
+          .name = "CRTC_Y",
+          .type = DRM_MODE_PROP_SIGNED_RANGE,
+        },
+      [META_KMS_PLANE_PROP_CRTC_W] =
+        {
+          .name = "CRTC_W",
+          .type = DRM_MODE_PROP_RANGE,
+        },
+      [META_KMS_PLANE_PROP_CRTC_H] =
+        {
+          .name = "CRTC_H",
+          .type = DRM_MODE_PROP_RANGE,
+        },
+      [META_KMS_PLANE_PROP_FB_ID] =
+        {
+          .name = "FB_ID",
+          .type = DRM_MODE_PROP_OBJECT,
+        },
+      [META_KMS_PLANE_PROP_CRTC_ID] =
+        {
+          .name = "CRTC_ID",
+          .type = DRM_MODE_PROP_OBJECT,
+        },
+    }
+  };
+
+  meta_kms_impl_device_init_prop_table (impl_device,
+                                        drm_plane_props->props,
+                                        drm_plane_props->count_props,
+                                        plane->prop_table.props,
+                                        META_KMS_PLANE_N_PROPS);
+}
+
 MetaKmsPlane *
 meta_kms_plane_new (MetaKmsPlaneType         type,
                     MetaKmsImplDevice       *impl_device,
@@ -380,6 +476,8 @@ meta_kms_plane_new (MetaKmsPlaneType         type,
   init_rotations (plane, impl_device, drm_plane_props);
   init_formats (plane, impl_device, drm_plane, drm_plane_props);
 
+  init_properties (plane, impl_device, drm_plane, drm_plane_props);
+
   return plane;
 }