1 files changed, 47 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xlnx/xlnx_gem.c b/drivers/gpu/drm/xlnx/xlnx_gem.c
new file mode 100644
index 000000000000..4a5d533ec72e
--- /dev/null
+++ b/drivers/gpu/drm/xlnx/xlnx_gem.c
@@ -0,0 +1,47 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Xilinx DRM KMS GEM helper
+ *
+ *  Copyright (C) 2015 - 2018 Xilinx, Inc.
+ *
+ *  Author: Hyun Woo Kwon <hyun.kwon@xilinx.com>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <drm/drmP.h>
+#include <drm/drm_gem_cma_helper.h>
+
+#include "xlnx_drv.h"
+#include "xlnx_gem.h"
+
+/*
+ * xlnx_gem_cma_dumb_create - (struct drm_driver)->dumb_create callback
+ * @file_priv: drm_file object
+ * @drm: DRM object
+ * @args: info for dumb scanout buffer creation
+ *
+ * This function is for dumb_create callback of drm_driver struct. Simply
+ * it wraps around drm_gem_cma_dumb_create() and sets the pitch value
+ * by retrieving the value from the device.
+ *
+ * Return: The return value from drm_gem_cma_dumb_create()
+ */
+int xlnx_gem_cma_dumb_create(struct drm_file *file_priv, struct drm_device *drm,
+			     struct drm_mode_create_dumb *args)
+{
+	int pitch = DIV_ROUND_UP(args->width * args->bpp, 8);
+	unsigned int align = xlnx_get_align(drm);
+
+	if (!args->pitch || !IS_ALIGNED(args->pitch, align))
+		args->pitch = ALIGN(pitch, align);
+
+	return drm_gem_cma_dumb_create_internal(file_priv, drm, args);
+}