arch/arm/mach-omap2/fb.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Framebuffer device registration for TI OMAP platforms
   4  *
   5  * Copyright (C) 2006 Nokia Corporation
   6  * Author: Imre Deak <imre.deak@nokia.com>
   7  */
   8
   9 #include <linux/module.h>
  10 #include <linux/kernel.h>
  11 #include <linux/mm.h>
  12 #include <linux/init.h>
  13 #include <linux/platform_device.h>
  14 #include <linux/memblock.h>
  15 #include <linux/io.h>
  16 #include <linux/omapfb.h>
  17 #include <linux/dma-mapping.h>
  18
  19 #include <asm/mach/map.h>
  20
  21 #include "soc.h"
  22 #include "display.h"
  23
  24 #ifdef CONFIG_OMAP2_VRFB
  25
  26 /*
  27  * The first memory resource is the register region for VRFB,
  28  * the rest are VRFB virtual memory areas for each VRFB context.
  29  */
  30
  31 static const struct resource omap2_vrfb_resources[] = {
  32         DEFINE_RES_MEM_NAMED(0x68008000u, 0x40, "vrfb-regs"),
  33         DEFINE_RES_MEM_NAMED(0x70000000u, 0x4000000, "vrfb-area-0"),
  34         DEFINE_RES_MEM_NAMED(0x74000000u, 0x4000000, "vrfb-area-1"),
  35         DEFINE_RES_MEM_NAMED(0x78000000u, 0x4000000, "vrfb-area-2"),
  36         DEFINE_RES_MEM_NAMED(0x7c000000u, 0x4000000, "vrfb-area-3"),
  37 };
  38
  39 static const struct resource omap3_vrfb_resources[] = {
  40         DEFINE_RES_MEM_NAMED(0x6C000180u, 0xc0, "vrfb-regs"),
  41         DEFINE_RES_MEM_NAMED(0x70000000u, 0x4000000, "vrfb-area-0"),
  42         DEFINE_RES_MEM_NAMED(0x74000000u, 0x4000000, "vrfb-area-1"),
  43         DEFINE_RES_MEM_NAMED(0x78000000u, 0x4000000, "vrfb-area-2"),
  44         DEFINE_RES_MEM_NAMED(0x7c000000u, 0x4000000, "vrfb-area-3"),
  45         DEFINE_RES_MEM_NAMED(0xe0000000u, 0x4000000, "vrfb-area-4"),
  46         DEFINE_RES_MEM_NAMED(0xe4000000u, 0x4000000, "vrfb-area-5"),
  47         DEFINE_RES_MEM_NAMED(0xe8000000u, 0x4000000, "vrfb-area-6"),
  48         DEFINE_RES_MEM_NAMED(0xec000000u, 0x4000000, "vrfb-area-7"),
  49         DEFINE_RES_MEM_NAMED(0xf0000000u, 0x4000000, "vrfb-area-8"),
  50         DEFINE_RES_MEM_NAMED(0xf4000000u, 0x4000000, "vrfb-area-9"),
  51         DEFINE_RES_MEM_NAMED(0xf8000000u, 0x4000000, "vrfb-area-10"),
  52         DEFINE_RES_MEM_NAMED(0xfc000000u, 0x4000000, "vrfb-area-11"),
  53 };
  54
  55 int __init omap_init_vrfb(void)
  56 {
  57         struct platform_device *pdev;
  58         const struct resource *res;
  59         unsigned int num_res;
  60
  61         if (cpu_is_omap24xx()) {
  62                 res = omap2_vrfb_resources;
  63                 num_res = ARRAY_SIZE(omap2_vrfb_resources);
  64         } else if (cpu_is_omap34xx()) {
  65                 res = omap3_vrfb_resources;
  66                 num_res = ARRAY_SIZE(omap3_vrfb_resources);
  67         } else {
  68                 return 0;
  69         }
  70
  71         pdev = platform_device_register_resndata(NULL, "omapvrfb", -1,
  72                         res, num_res, NULL, 0);
  73
  74         return PTR_ERR_OR_ZERO(pdev);
  75 }
  76 #else
  77 int __init omap_init_vrfb(void) { return 0; }
  78 #endif
  79
  80 #if IS_ENABLED(CONFIG_FB_OMAP2)
  81
  82 static u64 omap_fb_dma_mask = ~(u32)0;
  83 static struct omapfb_platform_data omapfb_config;
  84
  85 static struct platform_device omap_fb_device = {
  86         .name           = "omapfb",
  87         .id             = -1,
  88         .dev = {
  89                 .dma_mask               = &omap_fb_dma_mask,
  90                 .coherent_dma_mask      = DMA_BIT_MASK(32),
  91                 .platform_data          = &omapfb_config,
  92         },
  93         .num_resources = 0,
  94 };
  95
  96 int __init omap_init_fb(void)
  97 {
  98         return platform_device_register(&omap_fb_device);
  99 }
 100 #else
 101 int __init omap_init_fb(void) { return 0; }
 102 #endif