kms/update: Make change updates to take MetaKmsMode

This will be needed for state keeping connected to turning mode infos
into blobs later used by the atomic modesetting implementation.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1488>

src/backends/native/meta-crtc-kms.c

@@ -176,7 +176,7 @@ meta_crtc_kms_set_mode (MetaCrtcKms   *crtc_kms,
   MetaCrtc *crtc = META_CRTC (crtc_kms);
   MetaGpu *gpu = meta_crtc_get_gpu (crtc);
   GList *connectors;
-  const drmModeModeInfo *mode;
+  MetaKmsMode *kms_mode;
 
   connectors = generate_crtc_connector_list (gpu, crtc);
 
@@ -184,17 +184,15 @@ meta_crtc_kms_set_mode (MetaCrtcKms   *crtc_kms,
     {
       const MetaCrtcConfig *crtc_config = meta_crtc_get_config (crtc);
       MetaCrtcModeKms *crtc_mode_kms = META_CRTC_MODE_KMS (crtc_config->mode);
-      MetaKmsMode *kms_mode;
 
       kms_mode = meta_crtc_mode_kms_get_kms_mode (crtc_mode_kms);
-      mode = meta_kms_mode_get_drm_mode (kms_mode);
 
       g_debug ("Setting CRTC (%" G_GUINT64_FORMAT ") mode to %s",
-               meta_crtc_get_id (crtc), mode->name);
+               meta_crtc_get_id (crtc), meta_kms_mode_get_name (kms_mode));
     }
   else
     {
-      mode = NULL;
+      kms_mode = NULL;
 
       g_debug ("Unsetting CRTC (%" G_GUINT64_FORMAT ") mode",
                meta_crtc_get_id (crtc));
@@ -203,7 +201,7 @@ meta_crtc_kms_set_mode (MetaCrtcKms   *crtc_kms,
   meta_kms_update_mode_set (kms_update,
                             meta_crtc_kms_get_kms_crtc (crtc_kms),
                             g_steal_pointer (&connectors),
-                            mode);
+                            kms_mode);
 }
 
 void

src/backends/native/meta-kms-crtc.c

@@ -24,6 +24,7 @@
 
 #include "backends/native/meta-kms-device-private.h"
 #include "backends/native/meta-kms-impl-device.h"
+#include "backends/native/meta-kms-mode.h"
 #include "backends/native/meta-kms-update-private.h"
 
 struct _MetaKmsCrtc
@@ -168,17 +169,19 @@ meta_kms_crtc_predict_state (MetaKmsCrtc   *crtc,
       if (mode_set->crtc != crtc)
         continue;
 
-      if (mode_set->drm_mode)
+      if (mode_set->mode)
         {
           MetaKmsPlaneAssignment *plane_assignment;
+          const drmModeModeInfo *drm_mode;
 
           plane_assignment =
             meta_kms_update_get_primary_plane_assignment (update, crtc);
+          drm_mode = meta_kms_mode_get_drm_mode (mode_set->mode);
 
           crtc->current_state.rect =
             meta_fixed_16_rectangle_to_rectangle (plane_assignment->src_rect);
           crtc->current_state.is_drm_mode_valid = TRUE;
-          crtc->current_state.drm_mode = *mode_set->drm_mode;
+          crtc->current_state.drm_mode = *drm_mode;
         }
       else
         {

src/backends/native/meta-kms-impl-simple.c

@@ -29,6 +29,7 @@
 #include "backends/native/meta-kms-connector.h"
 #include "backends/native/meta-kms-crtc.h"
 #include "backends/native/meta-kms-device-private.h"
+#include "backends/native/meta-kms-mode.h"
 #include "backends/native/meta-kms-page-flip-private.h"
 #include "backends/native/meta-kms-plane.h"
 #include "backends/native/meta-kms-private.h"
@@ -192,6 +193,7 @@ process_mode_set (MetaKmsImpl     *impl,
   g_autofree uint32_t *connectors = NULL;
   int n_connectors;
   MetaKmsPlaneAssignment *plane_assignment;
+  drmModeModeInfo *drm_mode;
   uint32_t x, y;
   uint32_t fb_id;
   int fd;
@@ -199,10 +201,13 @@ process_mode_set (MetaKmsImpl     *impl,
 
   crtc = mode_set->crtc;
 
-  if (mode_set->drm_mode)
+  if (mode_set->mode)
     {
       GList *l;
 
+      drm_mode = g_alloca (sizeof *drm_mode);
+      *drm_mode = *meta_kms_mode_get_drm_mode (mode_set->mode);
+
       fill_connector_ids_array (mode_set->connectors,
                                 &connectors,
                                 &n_connectors);
@@ -233,6 +238,7 @@ process_mode_set (MetaKmsImpl     *impl,
     }
   else
     {
+      drm_mode = NULL;
       x = y = 0;
       n_connectors = 0;
       connectors = NULL;
@@ -245,23 +251,23 @@ process_mode_set (MetaKmsImpl     *impl,
                         fb_id,
                         x, y,
                         connectors, n_connectors,
-                        mode_set->drm_mode);
+                        drm_mode);
   if (ret != 0)
     {
       g_set_error (error, G_IO_ERROR, g_io_error_from_errno (-ret),
                    "Failed to set mode %s on CRTC %u: %s",
-                   mode_set->drm_mode ? mode_set->drm_mode->name : "off",
+                   drm_mode ? drm_mode->name : "off",
                    meta_kms_crtc_get_id (crtc),
                    g_strerror (-ret));
       return FALSE;
     }
 
-  if (mode_set->drm_mode)
+  if (drm_mode)
     {
       g_hash_table_replace (impl_simple->cached_mode_sets,
                             crtc,
                             cached_mode_set_new (mode_set->connectors,
-                                                 mode_set->drm_mode));
+                                                 drm_mode));
     }
   else
     {

src/backends/native/meta-kms-update-private.h

@@ -63,7 +63,7 @@ typedef struct _MetaKmsModeSet
 {
   MetaKmsCrtc *crtc;
   GList *connectors;
-  drmModeModeInfo *drm_mode;
+  MetaKmsMode *mode;
 } MetaKmsModeSet;
 
 typedef struct _MetaKmsConnectorProperty

src/backends/native/meta-kms-update.c

@@ -23,6 +23,7 @@
 #include "backends/native/meta-kms-update-private.h"
 
 #include "backends/meta-display-config-shared.h"
+#include "backends/native/meta-kms-mode-private.h"
 #include "backends/native/meta-kms-plane.h"
 
 struct _MetaKmsUpdate
@@ -149,7 +150,6 @@ meta_kms_plane_assignment_free (MetaKmsPlaneAssignment *plane_assignment)
 static void
 meta_kms_mode_set_free (MetaKmsModeSet *mode_set)
 {
-  g_free (mode_set->drm_mode);
   g_list_free (mode_set->connectors);
   g_free (mode_set);
 }
@@ -208,10 +208,10 @@ meta_kms_update_unassign_plane (MetaKmsUpdate *update,
 }
 
 void
-meta_kms_update_mode_set (MetaKmsUpdate         *update,
-                          MetaKmsCrtc           *crtc,
-                          GList                 *connectors,
-                          const drmModeModeInfo *drm_mode)
+meta_kms_update_mode_set (MetaKmsUpdate *update,
+                          MetaKmsCrtc   *crtc,
+                          GList         *connectors,
+                          MetaKmsMode   *mode)
 {
   MetaKmsModeSet *mode_set;
 
@@ -221,7 +221,7 @@ meta_kms_update_mode_set (MetaKmsUpdate         *update,
   *mode_set = (MetaKmsModeSet) {
     .crtc = crtc,
     .connectors = connectors,
-    .drm_mode = drm_mode ? g_memdup (drm_mode, sizeof *drm_mode) : NULL,
+    .mode = mode,
   };
 
   update->mode_sets = g_list_prepend (update->mode_sets, mode_set);

src/backends/native/meta-kms-update.h

@@ -85,10 +85,10 @@ MetaKmsUpdate * meta_kms_update_new (void);
 
 void meta_kms_update_free (MetaKmsUpdate *update);
 
-void meta_kms_update_mode_set (MetaKmsUpdate         *update,
-                               MetaKmsCrtc           *crtc,
-                               GList                 *connectors,
-                               const drmModeModeInfo *drm_mode);
+void meta_kms_update_mode_set (MetaKmsUpdate *update,
+                               MetaKmsCrtc   *crtc,
+                               GList         *connectors,
+                               MetaKmsMode   *mode);
 
 MetaKmsPlaneAssignment * meta_kms_update_assign_plane (MetaKmsUpdate          *update,
                                                        MetaKmsCrtc            *crtc,