LXR linux/arch/arm/mach-omap1/fb.c

   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 * File: arch/arm/plat-omap/fb.c
   4 *
   5 * Framebuffer device registration for TI OMAP platforms
   6 *
   7 * Copyright (C) 2006 Nokia Corporation
   8 * Author: Imre Deak <imre.deak@nokia.com>
   9 */
  10
  11#include <linux/module.h>
  12#include <linux/kernel.h>
  13#include <linux/mm.h>
  14#include <linux/init.h>
  15#include <linux/platform_device.h>
  16#include <linux/memblock.h>
  17#include <linux/io.h>
  18#include <linux/omapfb.h>
  19#include <linux/dma-mapping.h>
  20
  21#include <asm/mach/map.h>
  22
  23#if IS_ENABLED(CONFIG_FB_OMAP)
  24
  25static bool omapfb_lcd_configured;
  26static struct omapfb_platform_data omapfb_config;
  27
  28static u64 omap_fb_dma_mask = ~(u32)0;
  29
  30static struct platform_device omap_fb_device = {
  31        .name           = "omapfb",
  32        .id             = -1,
  33        .dev = {
  34                .dma_mask               = &omap_fb_dma_mask,
  35                .coherent_dma_mask      = DMA_BIT_MASK(32),
  36                .platform_data          = &omapfb_config,
  37        },
  38        .num_resources = 0,
  39};
  40
  41void __init omapfb_set_lcd_config(const struct omap_lcd_config *config)
  42{
  43        omapfb_config.lcd = *config;
  44        omapfb_lcd_configured = true;
  45}
  46
  47static int __init omap_init_fb(void)
  48{
  49        /*
  50         * If the board file has not set the lcd config with
  51         * omapfb_set_lcd_config(), don't bother registering the omapfb device
  52         */
  53        if (!omapfb_lcd_configured)
  54                return 0;
  55
  56        return platform_device_register(&omap_fb_device);
  57}
  58
  59arch_initcall(omap_init_fb);
  60
  61#else
  62
  63void __init omapfb_set_lcd_config(const struct omap_lcd_config *config)
  64{
  65}
  66
  67#endif
  68