arch/arm/mach-omap2/drm.c

   1 /*
   2  * DRM/KMS device registration for TI OMAP platforms
   3  *
   4  * Copyright (C) 2012 Texas Instruments
   5  * Author: Rob Clark <rob.clark@linaro.org>
   6  *
   7  * This program is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License version 2 as published by
   9  * the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  14  * more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along with
  17  * this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <linux/module.h>
  21 #include <linux/kernel.h>
  22 #include <linux/mm.h>
  23 #include <linux/init.h>
  24 #include <linux/platform_device.h>
  25 #include <linux/dma-mapping.h>
  26 #include <linux/platform_data/omap_drm.h>
  27
  28 #include "omap_device.h"
  29 #include "omap_hwmod.h"
  30
  31 #if defined(CONFIG_DRM_OMAP) || (CONFIG_DRM_OMAP_MODULE)
  32
  33 static struct omap_drm_platform_data platform_data;
  34
  35 static struct platform_device omap_drm_device = {
  36         .dev = {
  37                 .coherent_dma_mask = DMA_BIT_MASK(32),
  38                 .platform_data = &platform_data,
  39         },
  40         .name = "omapdrm",
  41         .id = 0,
  42 };
  43
  44 static int __init omap_init_drm(void)
  45 {
  46         struct omap_hwmod *oh = NULL;
  47         struct platform_device *pdev;
  48
  49         /* lookup and populate the DMM information, if present - OMAP4+ */
  50         oh = omap_hwmod_lookup("dmm");
  51
  52         if (oh) {
  53                 pdev = omap_device_build(oh->name, -1, oh, NULL, 0, NULL, 0,
  54                                         false);
  55                 WARN(IS_ERR(pdev), "Could not build omap_device for %s\n",
  56                         oh->name);
  57         }
  58
  59         platform_data.omaprev = GET_OMAP_REVISION();
  60
  61         return platform_device_register(&omap_drm_device);
  62
  63 }
  64
  65 arch_initcall(omap_init_drm);
  66
  67 #endif