LXR linux/drivers/gpu/drm/xilinx/xilinx_drm

   1/*
   2 * Xilinx DRM KMS GEM helper
   3 *
   4 *  Copyright (C) 2015 Xilinx, Inc.
   5 *
   6 *  Author: Hyun Woo Kwon <hyun.kwon@xilinx.com>
   7 *
   8 * This software is licensed under the terms of the GNU General Public
   9 * License version 2, as published by the Free Software Foundation, and
  10 * may be copied, distributed, and modified under those terms.
  11 *
  12 * This program is distributed in the hope that it will be useful,
  13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 * GNU General Public License for more details.
  16 */
  17
  18#include <drm/drmP.h>
  19#include <drm/drm_gem_cma_helper.h>
  20
  21#include "xilinx_drm_drv.h"
  22#include "xilinx_drm_gem.h"
  23
  24/*
  25 * xilinx_drm_gem_cma_dumb_create - (struct drm_driver)->dumb_create callback
  26 * @file_priv: drm_file object
  27 * @drm: DRM object
  28 * @args: info for dumb scanout buffer creation
  29 *
  30 * This function is for dumb_create callback of drm_driver struct. Simply
  31 * it wraps around drm_gem_cma_dumb_create() and sets the pitch value
  32 * by retrieving the value from the device.
  33 *
  34 * Return: The return value from drm_gem_cma_dumb_create()
  35 */
  36int xilinx_drm_gem_cma_dumb_create(struct drm_file *file_priv,
  37                                   struct drm_device *drm,
  38                                   struct drm_mode_create_dumb *args)
  39{
  40        int pitch = DIV_ROUND_UP(args->width * args->bpp, 8);
  41
  42        args->pitch = ALIGN(pitch, xilinx_drm_get_align(drm));
  43
  44        return drm_gem_cma_dumb_create_internal(file_priv, drm, args);
  45}
  46