From a9ae20232702b12ed4d5f255bdb753508fde3942 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jonas=20=C3=85dahl?= <jadahl@gmail.com>
Date: Mon, 13 Jul 2020 23:27:30 +0200
Subject: [PATCH] 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 2a36d4917..7454cd244 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 152077036..8348f3757 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;
 }