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
  33 #include <asm/mach/map.h>
  34
  35 #include <plat/cpu.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 static 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         if (IS_ERR(pdev))
  88                 return PTR_ERR(pdev);
  89         else
  90                 return 0;
  91 }
  92
  93 arch_initcall(omap_init_vrfb);
  94 #endif
  95
  96 #if defined(CONFIG_FB_OMAP) || defined(CONFIG_FB_OMAP_MODULE)
  97
  98 static bool omapfb_lcd_configured;
  99 static struct omapfb_platform_data omapfb_config;
 100
 101 static u64 omap_fb_dma_mask = ~(u32)0;
 102
 103 static struct platform_device omap_fb_device = {
 104         .name           = "omapfb",
 105         .id             = -1,
 106         .dev = {
 107                 .dma_mask               = &omap_fb_dma_mask,
 108                 .coherent_dma_mask      = ~(u32)0,
 109                 .platform_data          = &omapfb_config,
 110         },
 111         .num_resources = 0,
 112 };
 113
 114 void __init omapfb_set_lcd_config(const struct omap_lcd_config *config)
 115 {
 116         omapfb_config.lcd = *config;
 117         omapfb_lcd_configured = true;
 118 }
 119
 120 static int __init omap_init_fb(void)
 121 {
 122         /*
 123          * If the board file has not set the lcd config with
 124          * omapfb_set_lcd_config(), don't bother registering the omapfb device
 125          */
 126         if (!omapfb_lcd_configured)
 127                 return 0;
 128
 129         return platform_device_register(&omap_fb_device);
 130 }
 131
 132 arch_initcall(omap_init_fb);
 133
 134 #elif defined(CONFIG_FB_OMAP2) || defined(CONFIG_FB_OMAP2_MODULE)
 135
 136 static u64 omap_fb_dma_mask = ~(u32)0;
 137 static struct omapfb_platform_data omapfb_config;
 138
 139 static struct platform_device omap_fb_device = {
 140         .name           = "omapfb",
 141         .id             = -1,
 142         .dev = {
 143                 .dma_mask               = &omap_fb_dma_mask,
 144                 .coherent_dma_mask      = ~(u32)0,
 145                 .platform_data          = &omapfb_config,
 146         },
 147         .num_resources = 0,
 148 };
 149
 150 static int __init omap_init_fb(void)
 151 {
 152         return platform_device_register(&omap_fb_device);
 153 }
 154
 155 arch_initcall(omap_init_fb);
 156
 157 #else
 158
 159 void __init omapfb_set_lcd_config(const struct omap_lcd_config *config)
 160 {
 161 }
 162
 163 #endif