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