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 25 static bool omapfb_lcd_configured; 26 static struct omapfb_platform_data omapfb_config; 27 28 static u64 omap_fb_dma_mask = ~(u32)0; 29 30 static 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 41 void __init omapfb_set_lcd_config(const struct omap_lcd_config *config) 42 { 43 omapfb_config.lcd = *config; 44 omapfb_lcd_configured = true; 45 } 46 47 static 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 59 arch_initcall(omap_init_fb); 60 61 #else 62 63 void __init omapfb_set_lcd_config(const struct omap_lcd_config *config) 64 { 65 } 66 67 #endif 68