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kernel/linux-imx6_3.14.28/arch/arm/mach-omap1/fb.c 2.07 KB
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  /*
   * File: arch/arm/plat-omap/fb.c
   *
   * Framebuffer device registration for TI OMAP platforms
   *
   * Copyright (C) 2006 Nokia Corporation
   * Author: Imre Deak <imre.deak@nokia.com>
   *
   * This program is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License as published by the
   * Free Software Foundation; either version 2 of the License, or (at your
   * option) any later version.
   *
   * 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.
   *
   * You should have received a copy of the GNU General Public License along
   * with this program; if not, write to the Free Software Foundation, Inc.,
   * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
   */
  
  #include <linux/module.h>
  #include <linux/kernel.h>
  #include <linux/mm.h>
  #include <linux/init.h>
  #include <linux/platform_device.h>
  #include <linux/memblock.h>
  #include <linux/io.h>
  #include <linux/omapfb.h>
  #include <linux/dma-mapping.h>
  
  #include <asm/mach/map.h>
  
  #if defined(CONFIG_FB_OMAP) || defined(CONFIG_FB_OMAP_MODULE)
  
  static bool omapfb_lcd_configured;
  static struct omapfb_platform_data omapfb_config;
  
  static u64 omap_fb_dma_mask = ~(u32)0;
  
  static struct platform_device omap_fb_device = {
  	.name		= "omapfb",
  	.id		= -1,
  	.dev = {
  		.dma_mask		= &omap_fb_dma_mask,
  		.coherent_dma_mask	= DMA_BIT_MASK(32),
  		.platform_data		= &omapfb_config,
  	},
  	.num_resources = 0,
  };
  
  void __init omapfb_set_lcd_config(const struct omap_lcd_config *config)
  {
  	omapfb_config.lcd = *config;
  	omapfb_lcd_configured = true;
  }
  
  static int __init omap_init_fb(void)
  {
  	/*
  	 * If the board file has not set the lcd config with
  	 * omapfb_set_lcd_config(), don't bother registering the omapfb device
  	 */
  	if (!omapfb_lcd_configured)
  		return 0;
  
  	return platform_device_register(&omap_fb_device);
  }
  
  arch_initcall(omap_init_fb);
  
  #else
  
  void __init omapfb_set_lcd_config(const struct omap_lcd_config *config)
  {
  }
  
  #endif