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kernel/linux-imx6_3.14.28/arch/arm/mach-omap2/fb.c 3.54 KB
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  /*
   * 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>
  
  #include "soc.h"
  #include "display.h"
  
  #ifdef CONFIG_OMAP2_VRFB
  
  /*
   * The first memory resource is the register region for VRFB,
   * the rest are VRFB virtual memory areas for each VRFB context.
   */
  
  static const struct resource omap2_vrfb_resources[] = {
  	DEFINE_RES_MEM_NAMED(0x68008000u, 0x40, "vrfb-regs"),
  	DEFINE_RES_MEM_NAMED(0x70000000u, 0x4000000, "vrfb-area-0"),
  	DEFINE_RES_MEM_NAMED(0x74000000u, 0x4000000, "vrfb-area-1"),
  	DEFINE_RES_MEM_NAMED(0x78000000u, 0x4000000, "vrfb-area-2"),
  	DEFINE_RES_MEM_NAMED(0x7c000000u, 0x4000000, "vrfb-area-3"),
  };
  
  static const struct resource omap3_vrfb_resources[] = {
  	DEFINE_RES_MEM_NAMED(0x6C000180u, 0xc0, "vrfb-regs"),
  	DEFINE_RES_MEM_NAMED(0x70000000u, 0x4000000, "vrfb-area-0"),
  	DEFINE_RES_MEM_NAMED(0x74000000u, 0x4000000, "vrfb-area-1"),
  	DEFINE_RES_MEM_NAMED(0x78000000u, 0x4000000, "vrfb-area-2"),
  	DEFINE_RES_MEM_NAMED(0x7c000000u, 0x4000000, "vrfb-area-3"),
  	DEFINE_RES_MEM_NAMED(0xe0000000u, 0x4000000, "vrfb-area-4"),
  	DEFINE_RES_MEM_NAMED(0xe4000000u, 0x4000000, "vrfb-area-5"),
  	DEFINE_RES_MEM_NAMED(0xe8000000u, 0x4000000, "vrfb-area-6"),
  	DEFINE_RES_MEM_NAMED(0xec000000u, 0x4000000, "vrfb-area-7"),
  	DEFINE_RES_MEM_NAMED(0xf0000000u, 0x4000000, "vrfb-area-8"),
  	DEFINE_RES_MEM_NAMED(0xf4000000u, 0x4000000, "vrfb-area-9"),
  	DEFINE_RES_MEM_NAMED(0xf8000000u, 0x4000000, "vrfb-area-10"),
  	DEFINE_RES_MEM_NAMED(0xfc000000u, 0x4000000, "vrfb-area-11"),
  };
  
  int __init omap_init_vrfb(void)
  {
  	struct platform_device *pdev;
  	const struct resource *res;
  	unsigned int num_res;
  
  	if (cpu_is_omap24xx()) {
  		res = omap2_vrfb_resources;
  		num_res = ARRAY_SIZE(omap2_vrfb_resources);
  	} else if (cpu_is_omap34xx()) {
  		res = omap3_vrfb_resources;
  		num_res = ARRAY_SIZE(omap3_vrfb_resources);
  	} else {
  		return 0;
  	}
  
  	pdev = platform_device_register_resndata(NULL, "omapvrfb", -1,
  			res, num_res, NULL, 0);
  
  	return PTR_RET(pdev);
  }
  #else
  int __init omap_init_vrfb(void) { return 0; }
  #endif
  
  #if defined(CONFIG_FB_OMAP2) || defined(CONFIG_FB_OMAP2_MODULE)
  
  static u64 omap_fb_dma_mask = ~(u32)0;
  static struct omapfb_platform_data omapfb_config;
  
  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,
  };
  
  int __init omap_init_fb(void)
  {
  	return platform_device_register(&omap_fb_device);
  }
  #else
  int __init omap_init_fb(void) { return 0; }
  #endif