From 8f708a18e65b6992a385fbf90e21011f2d12cf17 Mon Sep 17 00:00:00 2001
From: Leona Chou <leona.chou@synaptics.com>
Date: Thu, 19 Mar 2020 15:06:12 +0800
Subject: [PATCH] minigbm: add synaptics gbm driver

Change the ozone platform from cast to drm
add synaptics gbm driver for buffer management.

BUG=b:152384632
TEST=use chromecast ui to verify drm
TEST=use ozone_demo app to verify drm

Change-Id: I9dff03e6b522ee84e34cbbcb28a40ca7857c4168
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/minigbm/+/2108458
Reviewed-by: Daniel Nicoara <dnicoara@chromium.org>
Reviewed-by: Gurchetan Singh <gurchetansingh@chromium.org>
Tested-by: Daniel Nicoara <dnicoara@chromium.org>
Commit-Queue: Daniel Nicoara <dnicoara@chromium.org>
---
 Android.mk  |  1 +
 drv.c       |  6 ++++++
 synaptics.c | 33 +++++++++++++++++++++++++++++++++
 3 files changed, 40 insertions(+)
 create mode 100644 synaptics.c

diff --git a/Android.mk b/Android.mk
index 564f416..3eab7ae 100644
--- a/Android.mk
+++ b/Android.mk
@@ -23,6 +23,7 @@ MINIGBM_SRC := \
 	nouveau.c \
 	radeon.c \
 	rockchip.c \
+	synaptics.c \
 	tegra.c \
 	udl.c \
 	vc4.c \
diff --git a/drv.c b/drv.c
index fee3e57..8009bac 100644
--- a/drv.c
+++ b/drv.c
@@ -54,6 +54,9 @@ extern const struct backend backend_radeon;
 #ifdef DRV_ROCKCHIP
 extern const struct backend backend_rockchip;
 #endif
+#ifdef DRV_SYNAPTICS
+extern const struct backend backend_synaptics;
+#endif
 #ifdef DRV_TEGRA
 extern const struct backend backend_tegra;
 #endif
@@ -104,6 +107,9 @@ static const struct backend *drv_get_backend(int fd)
 #ifdef DRV_ROCKCHIP
 		&backend_rockchip,
 #endif
+#ifdef DRV_SYNAPTICS
+		&backend_synaptics,
+#endif
 #ifdef DRV_TEGRA
 		&backend_tegra,
 #endif
diff --git a/synaptics.c b/synaptics.c
new file mode 100644
index 0000000..bcd8189
--- /dev/null
+++ b/synaptics.c
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2020 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+#ifdef DRV_SYNAPTICS
+
+#include "drv_priv.h"
+#include "helpers.h"
+#include "util.h"
+
+static const uint32_t render_target_formats[] = { DRM_FORMAT_ARGB8888, DRM_FORMAT_ABGR8888,
+                                                  DRM_FORMAT_XRGB8888 };
+
+static int synaptics_init(struct driver *drv)
+{
+	drv_add_combinations(drv, render_target_formats, ARRAY_SIZE(render_target_formats),
+			     &LINEAR_METADATA, BO_USE_RENDER_MASK | BO_USE_SCANOUT);
+
+	return drv_modify_linear_combinations(drv);
+}
+
+const struct backend backend_synaptics = {
+	.name = "synaptics",
+	.init = synaptics_init,
+	.bo_create = drv_dumb_bo_create,
+	.bo_destroy = drv_dumb_bo_destroy,
+	.bo_import = drv_prime_bo_import,
+	.bo_map = drv_dumb_bo_map,
+	.bo_unmap = drv_bo_munmap,
+};
+
+#endif