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 85