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 
omapfb_set_lcd_config(const struct omap_lcd_config * config)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 
omap_init_fb(void)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 
omapfb_set_lcd_config(const struct omap_lcd_config * config)80 void __init omapfb_set_lcd_config(const struct omap_lcd_config *config)
81 {
82 }
83 
84 #endif
85