arch/arm/mach-omap2/fb.c

   1 /*
   2  * Framebuffer device registration for TI OMAP platforms
   3  *
   4  * Copyright (C) 2006 Nokia Corporation
   5  * Author: Imre Deak <imre.deak@nokia.com>
   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 as published by the
   9  * Free Software Foundation; either version 2 of the License, or (at your
  10  * option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  20  */
  21
  22 #include <linux/module.h>
  23 #include <linux/kernel.h>
  24 #include <linux/mm.h>
  25 #include <linux/init.h>
  26 #include <linux/platform_device.h>
  27 #include <linux/memblock.h>
  28 #include <linux/io.h>
  29 #include <linux/omapfb.h>
  30 #include <linux/dma-mapping.h>
  31
  32 #include <asm/mach/map.h>
  33
  34 #include "soc.h"
  35 #include "display.h"
  36
  37 #ifdef CONFIG_OMAP2_VRFB
  38
  39 /*
  40  * The first memory resource is the register region for VRFB,
  41  * the rest are VRFB virtual memory areas for each VRFB context.
  42  */
  43
  44 static const struct resource omap2_vrfb_resources[] = {
  45         DEFINE_RES_MEM_NAMED(0x68008000u, 0x40, "vrfb-regs"),
  46         DEFINE_RES_MEM_NAMED(0x70000000u, 0x4000000, "vrfb-area-0"),
  47         DEFINE_RES_MEM_NAMED(0x74000000u, 0x4000000, "vrfb-area-1"),
  48         DEFINE_RES_MEM_NAMED(0x78000000u, 0x4000000, "vrfb-area-2"),
  49         DEFINE_RES_MEM_NAMED(0x7c000000u, 0x4000000, "vrfb-area-3"),
  50 };
  51
  52 static const struct resource omap3_vrfb_resources[] = {
  53         DEFINE_RES_MEM_NAMED(0x6C000180u, 0xc0, "vrfb-regs"),
  54         DEFINE_RES_MEM_NAMED(0x70000000u, 0x4000000, "vrfb-area-0"),
  55         DEFINE_RES_MEM_NAMED(0x74000000u, 0x4000000, "vrfb-area-1"),
  56         DEFINE_RES_MEM_NAMED(0x78000000u, 0x4000000, "vrfb-area-2"),
  57         DEFINE_RES_MEM_NAMED(0x7c000000u, 0x4000000, "vrfb-area-3"),
  58         DEFINE_RES_MEM_NAMED(0xe0000000u, 0x4000000, "vrfb-area-4"),
  59         DEFINE_RES_MEM_NAMED(0xe4000000u, 0x4000000, "vrfb-area-5"),
  60         DEFINE_RES_MEM_NAMED(0xe8000000u, 0x4000000, "vrfb-area-6"),
  61         DEFINE_RES_MEM_NAMED(0xec000000u, 0x4000000, "vrfb-area-7"),
  62         DEFINE_RES_MEM_NAMED(0xf0000000u, 0x4000000, "vrfb-area-8"),
  63         DEFINE_RES_MEM_NAMED(0xf4000000u, 0x4000000, "vrfb-area-9"),
  64         DEFINE_RES_MEM_NAMED(0xf8000000u, 0x4000000, "vrfb-area-10"),
  65         DEFINE_RES_MEM_NAMED(0xfc000000u, 0x4000000, "vrfb-area-11"),
  66 };
  67
  68 int __init omap_init_vrfb(void)
  69 {
  70         struct platform_device *pdev;
  71         const struct resource *res;
  72         unsigned int num_res;
  73
  74         if (cpu_is_omap24xx()) {
  75                 res = omap2_vrfb_resources;
  76                 num_res = ARRAY_SIZE(omap2_vrfb_resources);
  77         } else if (cpu_is_omap34xx()) {
  78                 res = omap3_vrfb_resources;
  79                 num_res = ARRAY_SIZE(omap3_vrfb_resources);
  80         } else {
  81                 return 0;
  82         }
  83
  84         pdev = platform_device_register_resndata(NULL, "omapvrfb", -1,
  85                         res, num_res, NULL, 0);
  86
  87         return PTR_ERR_OR_ZERO(pdev);
  88 }
  89 #else
  90 int __init omap_init_vrfb(void) { return 0; }
  91 #endif
  92
  93 #if IS_ENABLED(CONFIG_FB_OMAP2)
  94
  95 static u64 omap_fb_dma_mask = ~(u32)0;
  96 static struct omapfb_platform_data omapfb_config;
  97
  98 static struct platform_device omap_fb_device = {
  99         .name           = "omapfb",
 100         .id             = -1,
 101         .dev = {
 102                 .dma_mask               = &omap_fb_dma_mask,
 103                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 104                 .platform_data          = &omapfb_config,
 105         },
 106         .num_resources = 0,
 107 };
 108
 109 int __init omap_init_fb(void)
 110 {
 111         return platform_device_register(&omap_fb_device);
 112 }
 113 #else
 114 int __init omap_init_fb(void) { return 0; }
 115 #endif