drm_hwcomposer: Add Imagination platform support
External Android.bp file should be created in order to build this module:
```
cc_library_shared {
name: "hwcomposer.drm_imagination",
defaults: ["hwcomposer.drm_defaults"],
srcs: [":drm_hwcomposer_platformimagination"],
whole_static_libs: ["drm_hwcomposer"],
shared_libs: ["libion"],
include_dirs: [
"path/to/imgtec/include/files",
],
}
```
libion is needed to make ion.h header visible `linux/ion.h`.
Signed-off-by: Roman Stratiienko <roman.stratiienko@globallogic.com>
diff --git a/platform/platformimagination.cpp b/platform/platformimagination.cpp
new file mode 100644
index 0000000..b94ca0b
--- /dev/null
+++ b/platform/platformimagination.cpp
@@ -0,0 +1,81 @@
+#define LOG_TAG "hwc-platform-imagination"
+
+#include "platformimagination.h"
+#include <drm/drm_fourcc.h>
+#include <log/log.h>
+#include <xf86drm.h>
+
+#include "img_gralloc1_public.h"
+
+namespace android {
+
+Importer *Importer::CreateInstance(DrmDevice *drm) {
+ ImaginationImporter *importer = new ImaginationImporter(drm);
+ if (!importer)
+ return NULL;
+
+ int ret = importer->Init();
+ if (ret) {
+ ALOGE("Failed to initialize the Imagination importer %d", ret);
+ delete importer;
+ return NULL;
+ }
+ return importer;
+}
+
+int ImaginationImporter::ImportBuffer(buffer_handle_t handle,
+ hwc_drm_bo_t *bo) {
+ IMG_native_handle_t *hnd = (IMG_native_handle_t *)handle;
+ if (!hnd)
+ return -EINVAL;
+
+ uint32_t gem_handle;
+ int ret = drmPrimeFDToHandle(drm_->fd(), hnd->fd[0], &gem_handle);
+ if (ret) {
+ ALOGE("failed to import prime fd %d ret=%d", hnd->fd[0], ret);
+ return ret;
+ }
+
+ /* Extra bits are responsible for buffer compression and memory layout */
+ if (hnd->iFormat & ~0x10f) {
+ ALOGE("Special buffer formats are not supported");
+ return -EINVAL;
+ }
+
+ memset(bo, 0, sizeof(hwc_drm_bo_t));
+ bo->width = hnd->iWidth;
+ bo->height = hnd->iHeight;
+ bo->usage = hnd->usage;
+ bo->gem_handles[0] = gem_handle;
+ bo->pitches[0] = ALIGN(hnd->iWidth, HW_ALIGN) * hnd->uiBpp >> 3;
+
+ switch (hnd->iFormat) {
+#ifdef HAL_PIXEL_FORMAT_BGRX_8888
+ case HAL_PIXEL_FORMAT_BGRX_8888:
+ bo->format = DRM_FORMAT_XRGB8888;
+ break;
+#endif
+ default:
+ bo->format = ConvertHalFormatToDrm(hnd->iFormat & 0xf);
+ if (bo->format == DRM_FORMAT_INVALID) {
+ ALOGE("Cannot convert hal format to drm format %u", hnd->iFormat);
+ return -EINVAL;
+ }
+ }
+
+ ret = drmModeAddFB2(drm_->fd(), bo->width, bo->height, bo->format,
+ bo->gem_handles, bo->pitches, bo->offsets, &bo->fb_id, 0);
+ if (ret) {
+ ALOGE("could not create drm fb ret: %d", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+std::unique_ptr<Planner> Planner::CreateInstance(DrmDevice *) {
+ std::unique_ptr<Planner> planner(new Planner);
+ planner->AddStage<PlanStageGreedy>();
+ return planner;
+}
+} // namespace android