drm_hwcomposer: Add platformmeson for Amlogic SoC support
This specific platform handler is dedicated for the Amlogic SoC,
and more precisely for the Amlogic G12A family.
OpenGL/Mali allocation is done via a slightly modified ARM Gralloc
module, thus needing a custom platform handler to handle the custom
private_handle_t structure.
This platformmeson is based on platformhisi without the AFBC YUV
management (not handled by the Amlogic SoCs).
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Change-Id: I1a1d20b0a84b0e17aa3417c8e9633712f258523d
diff --git a/platformmeson.cpp b/platformmeson.cpp
new file mode 100644
index 0000000..58ec5c0
--- /dev/null
+++ b/platformmeson.cpp
@@ -0,0 +1,140 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "hwc-platform-meson"
+
+#include "platformmeson.h"
+#include "drmdevice.h"
+#include "platform.h"
+
+#include <drm/drm_fourcc.h>
+#include <stdatomic.h>
+#include <xf86drm.h>
+#include <xf86drmMode.h>
+#include <cinttypes>
+
+#include <hardware/gralloc.h>
+#include <log/log.h>
+#include "gralloc_priv.h"
+
+namespace android {
+
+Importer *Importer::CreateInstance(DrmDevice *drm) {
+ MesonImporter *importer = new MesonImporter(drm);
+ if (!importer)
+ return NULL;
+
+ int ret = importer->Init();
+ if (ret) {
+ ALOGE("Failed to initialize the meson importer %d", ret);
+ delete importer;
+ return NULL;
+ }
+ return importer;
+}
+
+#if defined(MALI_GRALLOC_INTFMT_AFBC_BASIC) && \
+ defined(AFBC_FORMAT_MOD_BLOCK_SIZE_16x16)
+uint64_t MesonImporter::ConvertGrallocFormatToDrmModifiers(uint64_t flags) {
+ uint64_t features = 0UL;
+
+ if (flags & MALI_GRALLOC_INTFMT_AFBC_BASIC)
+ features |= AFBC_FORMAT_MOD_BLOCK_SIZE_16x16;
+
+ if (flags & MALI_GRALLOC_INTFMT_AFBC_SPLITBLK)
+ features |= (AFBC_FORMAT_MOD_SPLIT | AFBC_FORMAT_MOD_SPARSE);
+
+ if (flags & MALI_GRALLOC_INTFMT_AFBC_WIDEBLK)
+ features |= AFBC_FORMAT_MOD_BLOCK_SIZE_32x8;
+
+ if (flags & MALI_GRALLOC_INTFMT_AFBC_TILED_HEADERS)
+ features |= AFBC_FORMAT_MOD_TILED;
+
+ if (features)
+ return DRM_FORMAT_MOD_ARM_AFBC(features | AFBC_FORMAT_MOD_YTR);
+
+ return 0;
+}
+#else
+uint64_t MesonImporter::ConvertGrallocFormatToDrmModifiers(
+ uint64_t /* flags */) {
+ return 0;
+}
+#endif
+
+int MesonImporter::ImportBuffer(buffer_handle_t handle, hwc_drm_bo_t *bo) {
+ uint64_t modifiers[4] = {0};
+
+ memset(bo, 0, sizeof(hwc_drm_bo_t));
+
+ private_handle_t const *hnd = reinterpret_cast<private_handle_t const *>(
+ handle);
+ if (!hnd)
+ return -EINVAL;
+
+ // We can't import these types of buffers.
+ // These buffers should have been filtered out with CanImportBuffer()
+ if (!(hnd->usage & GRALLOC_USAGE_HW_FB))
+ return -EINVAL;
+
+ uint32_t gem_handle;
+ int ret = drmPrimeFDToHandle(drm_->fd(), hnd->share_fd, &gem_handle);
+ if (ret) {
+ ALOGE("failed to import prime fd %d ret=%d", hnd->share_fd, ret);
+ return ret;
+ }
+
+ int32_t fmt = ConvertHalFormatToDrm(hnd->req_format);
+ if (fmt < 0)
+ return fmt;
+
+ modifiers[0] = ConvertGrallocFormatToDrmModifiers(hnd->internal_format);
+
+ bo->width = hnd->width;
+ bo->height = hnd->height;
+ bo->hal_format = hnd->req_format;
+ bo->format = fmt;
+ bo->usage = hnd->usage;
+ bo->pixel_stride = hnd->stride;
+ bo->pitches[0] = hnd->byte_stride;
+ bo->gem_handles[0] = gem_handle;
+ bo->offsets[0] = 0;
+
+ ret = drmModeAddFB2WithModifiers(drm_->fd(), bo->width, bo->height,
+ bo->format, bo->gem_handles, bo->pitches,
+ bo->offsets, modifiers, &bo->fb_id,
+ modifiers[0] ? DRM_MODE_FB_MODIFIERS : 0);
+
+ if (ret) {
+ ALOGE("could not create drm fb %d", ret);
+ return ret;
+ }
+
+ return ret;
+}
+
+bool MesonImporter::CanImportBuffer(buffer_handle_t handle) {
+ private_handle_t const *hnd = reinterpret_cast<private_handle_t const *>(
+ handle);
+ return hnd && (hnd->usage & GRALLOC_USAGE_HW_FB);
+}
+
+std::unique_ptr<Planner> Planner::CreateInstance(DrmDevice *) {
+ std::unique_ptr<Planner> planner(new Planner);
+ planner->AddStage<PlanStageGreedy>();
+ return planner;
+}
+} // namespace android