drm_hwcomposer: Harvest min/max resolutions from drm

Store the minimum and maximum resolutions from drm in DrmResources

BUG=None
TEST=None

Change-Id: I21b9a3fc5f220585295733cc754fe0f6df0abae9
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Robert Foss <robert.foss@collabora.com>

2 files changed, 16 insertions, 0 deletions

diff --git a/drmresources.cpp b/drmresources.cpp
index e433239..6b8ed03 100644
--- a/drmresources.cpp
+++ b/drmresources.cpp
@@ -71,6 +71,11 @@ int DrmResources::Init() {
     return -ENODEV;
   }
 
+  min_resolution_ =
+      std::pair<uint32_t, uint32_t>(res->min_width, res->min_height);
+  max_resolution_ =
+      std::pair<uint32_t, uint32_t>(res->max_width, res->max_height);
+
   bool found_primary = false;
   int display_num = 1;
 
diff --git a/drmresources.h b/drmresources.h
index 64e6b57..011f87e 100644
--- a/drmresources.h
+++ b/drmresources.h
@@ -47,6 +47,14 @@ class DrmResources {
     return planes_;
   }
 
+  std::pair<uint32_t, uint32_t> min_resolution() const {
+    return min_resolution_;
+  }
+
+  std::pair<uint32_t, uint32_t> max_resolution() const {
+    return max_resolution_;
+  }
+
   DrmConnector *GetConnectorForDisplay(int display) const;
   DrmCrtc *GetCrtcForDisplay(int display) const;
   DrmPlane *GetPlane(uint32_t id) const;
@@ -83,6 +91,9 @@ class DrmResources {
   std::vector<std::unique_ptr<DrmPlane>> planes_;
   DrmCompositor compositor_;
   DrmEventListener event_listener_;
+
+  std::pair<uint32_t, uint32_t> min_resolution_;
+  std::pair<uint32_t, uint32_t> max_resolution_;
 };
 }