Pileus Git - ~andy/linux/blob - arch/arm/plat-omap/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 <mach/hardware.h>
  35 #include <asm/mach/map.h>
  36
  37 #include <plat/cpu.h>
  38
  39 #ifdef CONFIG_OMAP2_VRFB
  40
  41 /*
  42  * The first memory resource is the register region for VRFB,
  43  * the rest are VRFB virtual memory areas for each VRFB context.
  44  */
  45
  46 static const struct resource omap2_vrfb_resources[] = {
  47         DEFINE_RES_MEM_NAMED(0x68008000u, 0x40, "vrfb-regs"),
  48         DEFINE_RES_MEM_NAMED(0x70000000u, 0x4000000, "vrfb-area-0"),
  49         DEFINE_RES_MEM_NAMED(0x74000000u, 0x4000000, "vrfb-area-1"),
  50         DEFINE_RES_MEM_NAMED(0x78000000u, 0x4000000, "vrfb-area-2"),
  51         DEFINE_RES_MEM_NAMED(0x7c000000u, 0x4000000, "vrfb-area-3"),
  52 };
  53
  54 static const struct resource omap3_vrfb_resources[] = {
  55         DEFINE_RES_MEM_NAMED(0x6C000180u, 0xc0, "vrfb-regs"),
  56         DEFINE_RES_MEM_NAMED(0x70000000u, 0x4000000, "vrfb-area-0"),
  57         DEFINE_RES_MEM_NAMED(0x74000000u, 0x4000000, "vrfb-area-1"),
  58         DEFINE_RES_MEM_NAMED(0x78000000u, 0x4000000, "vrfb-area-2"),
  59         DEFINE_RES_MEM_NAMED(0x7c000000u, 0x4000000, "vrfb-area-3"),
  60         DEFINE_RES_MEM_NAMED(0xe0000000u, 0x4000000, "vrfb-area-4"),
  61         DEFINE_RES_MEM_NAMED(0xe4000000u, 0x4000000, "vrfb-area-5"),
  62         DEFINE_RES_MEM_NAMED(0xe8000000u, 0x4000000, "vrfb-area-6"),
  63         DEFINE_RES_MEM_NAMED(0xec000000u, 0x4000000, "vrfb-area-7"),
  64         DEFINE_RES_MEM_NAMED(0xf0000000u, 0x4000000, "vrfb-area-8"),
  65         DEFINE_RES_MEM_NAMED(0xf4000000u, 0x4000000, "vrfb-area-9"),
  66         DEFINE_RES_MEM_NAMED(0xf8000000u, 0x4000000, "vrfb-area-10"),
  67         DEFINE_RES_MEM_NAMED(0xfc000000u, 0x4000000, "vrfb-area-11"),
  68 };
  69
  70 static int __init omap_init_vrfb(void)
  71 {
  72         struct platform_device *pdev;
  73         const struct resource *res;
  74         unsigned int num_res;
  75
  76         if (cpu_is_omap24xx()) {
  77                 res = omap2_vrfb_resources;
  78                 num_res = ARRAY_SIZE(omap2_vrfb_resources);
  79         } else if (cpu_is_omap34xx()) {
  80                 res = omap3_vrfb_resources;
  81                 num_res = ARRAY_SIZE(omap3_vrfb_resources);
  82         } else {
  83                 return 0;
  84         }
  85
  86         pdev = platform_device_register_resndata(NULL, "omapvrfb", -1,
  87                         res, num_res, NULL, 0);
  88
  89         if (IS_ERR(pdev))
  90                 return PTR_ERR(pdev);
  91         else
  92                 return 0;
  93 }
  94
  95 arch_initcall(omap_init_vrfb);
  96 #endif
  97
  98 #if defined(CONFIG_FB_OMAP) || defined(CONFIG_FB_OMAP_MODULE)
  99
 100 static bool omapfb_lcd_configured;
 101 static struct omapfb_platform_data omapfb_config;
 102
 103 static u64 omap_fb_dma_mask = ~(u32)0;
 104
 105 static struct platform_device omap_fb_device = {
 106         .name           = "omapfb",
 107         .id             = -1,
 108         .dev = {
 109                 .dma_mask               = &omap_fb_dma_mask,
 110                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 111                 .platform_data          = &omapfb_config,
 112         },
 113         .num_resources = 0,
 114 };
 115
 116 void __init omapfb_set_lcd_config(const struct omap_lcd_config *config)
 117 {
 118         omapfb_config.lcd = *config;
 119         omapfb_lcd_configured = true;
 120 }
 121
 122 static int __init omap_init_fb(void)
 123 {
 124         /*
 125          * If the board file has not set the lcd config with
 126          * omapfb_set_lcd_config(), don't bother registering the omapfb device
 127          */
 128         if (!omapfb_lcd_configured)
 129                 return 0;
 130
 131         return platform_device_register(&omap_fb_device);
 132 }
 133
 134 arch_initcall(omap_init_fb);
 135
 136 #elif defined(CONFIG_FB_OMAP2) || defined(CONFIG_FB_OMAP2_MODULE)
 137
 138 static u64 omap_fb_dma_mask = ~(u32)0;
 139 static struct omapfb_platform_data omapfb_config;
 140
 141 static struct platform_device omap_fb_device = {
 142         .name           = "omapfb",
 143         .id             = -1,
 144         .dev = {
 145                 .dma_mask               = &omap_fb_dma_mask,
 146                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 147                 .platform_data          = &omapfb_config,
 148         },
 149         .num_resources = 0,
 150 };
 151
 152 static int __init omap_init_fb(void)
 153 {
 154         return platform_device_register(&omap_fb_device);
 155 }
 156
 157 arch_initcall(omap_init_fb);
 158
 159 #else
 160
 161 void __init omapfb_set_lcd_config(const struct omap_lcd_config *config)
 162 {
 163 }
 164
 165 #endif