arm/mach-omap2/fb.c

0001 // SPDX-License-Identifier: GPL-2.0-or-later
0002 /*
0003  * Framebuffer device registration for TI OMAP platforms
0004  *
0005  * Copyright (C) 2006 Nokia Corporation
0006  * Author: Imre Deak <imre.deak@nokia.com>
0007  */
0008
0009 #include <linux/module.h>
0010 #include <linux/kernel.h>
0011 #include <linux/mm.h>
0012 #include <linux/init.h>
0013 #include <linux/platform_device.h>
0014 #include <linux/memblock.h>
0015 #include <linux/io.h>
0016 #include <linux/omapfb.h>
0017 #include <linux/dma-mapping.h>
0018
0019 #include <asm/mach/map.h>
0020
0021 #include "soc.h"
0022 #include "display.h"
0023
0024 #ifdef CONFIG_OMAP2_VRFB
0025
0026 /*
0027  * The first memory resource is the register region for VRFB,
0028  * the rest are VRFB virtual memory areas for each VRFB context.
0029  */
0030
0031 static const struct resource omap2_vrfb_resources[] = {
0032     DEFINE_RES_MEM_NAMED(0x68008000u, 0x40, "vrfb-regs"),
0033     DEFINE_RES_MEM_NAMED(0x70000000u, 0x4000000, "vrfb-area-0"),
0034     DEFINE_RES_MEM_NAMED(0x74000000u, 0x4000000, "vrfb-area-1"),
0035     DEFINE_RES_MEM_NAMED(0x78000000u, 0x4000000, "vrfb-area-2"),
0036     DEFINE_RES_MEM_NAMED(0x7c000000u, 0x4000000, "vrfb-area-3"),
0037 };
0038
0039 static const struct resource omap3_vrfb_resources[] = {
0040     DEFINE_RES_MEM_NAMED(0x6C000180u, 0xc0, "vrfb-regs"),
0041     DEFINE_RES_MEM_NAMED(0x70000000u, 0x4000000, "vrfb-area-0"),
0042     DEFINE_RES_MEM_NAMED(0x74000000u, 0x4000000, "vrfb-area-1"),
0043     DEFINE_RES_MEM_NAMED(0x78000000u, 0x4000000, "vrfb-area-2"),
0044     DEFINE_RES_MEM_NAMED(0x7c000000u, 0x4000000, "vrfb-area-3"),
0045     DEFINE_RES_MEM_NAMED(0xe0000000u, 0x4000000, "vrfb-area-4"),
0046     DEFINE_RES_MEM_NAMED(0xe4000000u, 0x4000000, "vrfb-area-5"),
0047     DEFINE_RES_MEM_NAMED(0xe8000000u, 0x4000000, "vrfb-area-6"),
0048     DEFINE_RES_MEM_NAMED(0xec000000u, 0x4000000, "vrfb-area-7"),
0049     DEFINE_RES_MEM_NAMED(0xf0000000u, 0x4000000, "vrfb-area-8"),
0050     DEFINE_RES_MEM_NAMED(0xf4000000u, 0x4000000, "vrfb-area-9"),
0051     DEFINE_RES_MEM_NAMED(0xf8000000u, 0x4000000, "vrfb-area-10"),
0052     DEFINE_RES_MEM_NAMED(0xfc000000u, 0x4000000, "vrfb-area-11"),
0053 };
0054
0055 int __init omap_init_vrfb(void)
0056 {
0057     struct platform_device *pdev;
0058     const struct resource *res;
0059     unsigned int num_res;
0060
0061     if (cpu_is_omap24xx()) {
0062         res = omap2_vrfb_resources;
0063         num_res = ARRAY_SIZE(omap2_vrfb_resources);
0064     } else if (cpu_is_omap34xx()) {
0065         res = omap3_vrfb_resources;
0066         num_res = ARRAY_SIZE(omap3_vrfb_resources);
0067     } else {
0068         return 0;
0069     }
0070
0071     pdev = platform_device_register_resndata(NULL, "omapvrfb", -1,
0072             res, num_res, NULL, 0);
0073
0074     return PTR_ERR_OR_ZERO(pdev);
0075 }
0076 #else
0077 int __init omap_init_vrfb(void) { return 0; }
0078 #endif
0079
0080 #if IS_ENABLED(CONFIG_FB_OMAP2)
0081
0082 static u64 omap_fb_dma_mask = ~(u32)0;
0083 static struct omapfb_platform_data omapfb_config;
0084
0085 static struct platform_device omap_fb_device = {
0086     .name       = "omapfb",
0087     .id     = -1,
0088     .dev = {
0089         .dma_mask       = &omap_fb_dma_mask,
0090         .coherent_dma_mask  = DMA_BIT_MASK(32),
0091         .platform_data      = &omapfb_config,
0092     },
0093     .num_resources = 0,
0094 };
0095
0096 int __init omap_init_fb(void)
0097 {
0098     return platform_device_register(&omap_fb_device);
0099 }
0100 #else
0101 int __init omap_init_fb(void) { return 0; }
0102 #endif