root/arch/arm/mach-omap1/fb.c
// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * File: arch/arm/plat-omap/fb.c
 *
 * Framebuffer device registration for TI OMAP platforms
 *
 * Copyright (C) 2006 Nokia Corporation
 * Author: Imre Deak <imre.deak@nokia.com>
 */

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/memblock.h>
#include <linux/io.h>
#include <linux/omapfb.h>
#include <linux/dma-mapping.h>
#include <linux/irq.h>

#include <asm/mach/map.h>

#include "irqs.h"

#if IS_ENABLED(CONFIG_FB_OMAP)

static bool omapfb_lcd_configured;
static struct omapfb_platform_data omapfb_config;

static u64 omap_fb_dma_mask = ~(u32)0;

static struct resource omap_fb_resources[] = {
        {
                .name  = "irq",
                .start = INT_LCD_CTRL,
                .flags = IORESOURCE_IRQ,
        },
        {
                .name  = "irq",
                .start = INT_SOSSI_MATCH,
                .flags = IORESOURCE_IRQ,
        },
};

static struct platform_device omap_fb_device = {
        .name           = "omapfb",
        .id             = -1,
        .dev = {
                .dma_mask               = &omap_fb_dma_mask,
                .coherent_dma_mask      = DMA_BIT_MASK(32),
                .platform_data          = &omapfb_config,
        },
        .num_resources = ARRAY_SIZE(omap_fb_resources),
        .resource = omap_fb_resources,
};

void __init omapfb_set_lcd_config(const struct omap_lcd_config *config)
{
        omapfb_config.lcd = *config;
        omapfb_lcd_configured = true;
}

static int __init omap_init_fb(void)
{
        /*
         * If the board file has not set the lcd config with
         * omapfb_set_lcd_config(), don't bother registering the omapfb device
         */
        if (!omapfb_lcd_configured)
                return 0;

        return platform_device_register(&omap_fb_device);
}

arch_initcall(omap_init_fb);

#else

void __init omapfb_set_lcd_config(const struct omap_lcd_config *config)
{
}

#endif