cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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fb.c (2924B)

      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
     31static 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
     39static 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
     55int __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
     77int __init omap_init_vrfb(void) { return 0; }
     78#endif
     79
     80#if IS_ENABLED(CONFIG_FB_OMAP2)
     81
     82static u64 omap_fb_dma_mask = ~(u32)0;
     83static struct omapfb_platform_data omapfb_config;
     84
     85static 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
     96int __init omap_init_fb(void)
     97{
     98	return platform_device_register(&omap_fb_device);
     99}
    100#else
    101int __init omap_init_fb(void) { return 0; }
    102#endif