LXR linux/arch/arm/mach-omap1/fb.c

   1/*
   2 * File: arch/arm/plat-omap/fb.c
   3 *
   4 * Framebuffer device registration for TI OMAP platforms
   5 *
   6 * Copyright (C) 2006 Nokia Corporation
   7 * Author: Imre Deak <imre.deak@nokia.com>
   8 *
   9 * This program is free software; you can redistribute it and/or modify it
  10 * under the terms of the GNU General Public License as published by the
  11 * Free Software Foundation; either version 2 of the License, or (at your
  12 * option) any later version.
  13 *
  14 * This program is distributed in the hope that it will be useful, but
  15 * WITHOUT ANY WARRANTY; without even the implied warranty of
  16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17 * General Public License for more details.
  18 *
  19 * You should have received a copy of the GNU General Public License along
  20 * with this program; if not, write to the Free Software Foundation, Inc.,
  21 * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  22 */
  23
  24#include <linux/module.h>
  25#include <linux/kernel.h>
  26#include <linux/mm.h>
  27#include <linux/init.h>
  28#include <linux/platform_device.h>
  29#include <linux/memblock.h>
  30#include <linux/io.h>
  31#include <linux/omapfb.h>
  32#include <linux/dma-mapping.h>
  33
  34#include <asm/mach/map.h>
  35
  36#if defined(CONFIG_FB_OMAP) || defined(CONFIG_FB_OMAP_MODULE)
  37
  38static bool omapfb_lcd_configured;
  39static struct omapfb_platform_data omapfb_config;
  40
  41static u64 omap_fb_dma_mask = ~(u32)0;
  42
  43static struct platform_device omap_fb_device = {
  44        .name           = "omapfb",
  45        .id             = -1,
  46        .dev = {
  47                .dma_mask               = &omap_fb_dma_mask,
  48                .coherent_dma_mask      = DMA_BIT_MASK(32),
  49                .platform_data          = &omapfb_config,
  50        },
  51        .num_resources = 0,
  52};
  53
  54void __init omapfb_set_lcd_config(const struct omap_lcd_config *config)
  55{
  56        omapfb_config.lcd = *config;
  57        omapfb_lcd_configured = true;
  58}
  59
  60static int __init omap_init_fb(void)
  61{
  62        /*
  63         * If the board file has not set the lcd config with
  64         * omapfb_set_lcd_config(), don't bother registering the omapfb device
  65         */
  66        if (!omapfb_lcd_configured)
  67                return 0;
  68
  69        return platform_device_register(&omap_fb_device);
  70}
  71
  72arch_initcall(omap_init_fb);
  73
  74#else
  75
  76void __init omapfb_set_lcd_config(const struct omap_lcd_config *config)
  77{
  78}
  79
  80#endif
  81