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 #include <linux/irq.h>
  21
  22 #include <asm/mach/map.h>
  23
  24 #include "irqs.h"
  25
  26 #if IS_ENABLED(CONFIG_FB_OMAP)
  27
  28 static bool omapfb_lcd_configured;
  29 static struct omapfb_platform_data omapfb_config;
  30
  31 static u64 omap_fb_dma_mask = ~(u32)0;
  32
  33 static struct resource omap_fb_resources[] = {
  34         {
  35                 .name  = "irq",
  36                 .start = INT_LCD_CTRL,
  37                 .flags = IORESOURCE_IRQ,
  38         },
  39         {
  40                 .name  = "irq",
  41                 .start = INT_SOSSI_MATCH,
  42                 .flags = IORESOURCE_IRQ,
  43         },
  44 };
  45
  46 static struct platform_device omap_fb_device = {
  47         .name           = "omapfb",
  48         .id             = -1,
  49         .dev = {
  50                 .dma_mask               = &omap_fb_dma_mask,
  51                 .coherent_dma_mask      = DMA_BIT_MASK(32),
  52                 .platform_data          = &omapfb_config,
  53         },
  54         .num_resources = ARRAY_SIZE(omap_fb_resources),
  55         .resource = omap_fb_resources,
  56 };
  57
  58 void __init omapfb_set_lcd_config(const struct omap_lcd_config *config)
  59 {
  60         omapfb_config.lcd = *config;
  61         omapfb_lcd_configured = true;
  62 }
  63
  64 static int __init omap_init_fb(void)
  65 {
  66         /*
  67          * If the board file has not set the lcd config with
  68          * omapfb_set_lcd_config(), don't bother registering the omapfb device
  69          */
  70         if (!omapfb_lcd_configured)
  71                 return 0;
  72
  73         return platform_device_register(&omap_fb_device);
  74 }
  75
  76 arch_initcall(omap_init_fb);
  77
  78 #else
  79
  80 void __init omapfb_set_lcd_config(const struct omap_lcd_config *config)
  81 {
  82 }
  83
  84 #endif