xref: /openbmc/linux/arch/arm/mach-omap2/fb.c (revision 4f3db074)
1 /*
2  * Framebuffer device registration for TI OMAP platforms
3  *
4  * Copyright (C) 2006 Nokia Corporation
5  * Author: Imre Deak <imre.deak@nokia.com>
6  *
7  * This program is free software; you can redistribute it and/or modify it
8  * under the terms of the GNU General Public License as published by the
9  * Free Software Foundation; either version 2 of the License, or (at your
10  * option) any later version.
11  *
12  * This program is distributed in the hope that it will be useful, but
13  * WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License along
18  * with this program; if not, write to the Free Software Foundation, Inc.,
19  * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
20  */
21 
22 #include <linux/module.h>
23 #include <linux/kernel.h>
24 #include <linux/mm.h>
25 #include <linux/init.h>
26 #include <linux/platform_device.h>
27 #include <linux/memblock.h>
28 #include <linux/io.h>
29 #include <linux/omapfb.h>
30 #include <linux/dma-mapping.h>
31 
32 #include <asm/mach/map.h>
33 
34 #include "soc.h"
35 #include "display.h"
36 
37 #ifdef CONFIG_OMAP2_VRFB
38 
39 /*
40  * The first memory resource is the register region for VRFB,
41  * the rest are VRFB virtual memory areas for each VRFB context.
42  */
43 
44 static const struct resource omap2_vrfb_resources[] = {
45 	DEFINE_RES_MEM_NAMED(0x68008000u, 0x40, "vrfb-regs"),
46 	DEFINE_RES_MEM_NAMED(0x70000000u, 0x4000000, "vrfb-area-0"),
47 	DEFINE_RES_MEM_NAMED(0x74000000u, 0x4000000, "vrfb-area-1"),
48 	DEFINE_RES_MEM_NAMED(0x78000000u, 0x4000000, "vrfb-area-2"),
49 	DEFINE_RES_MEM_NAMED(0x7c000000u, 0x4000000, "vrfb-area-3"),
50 };
51 
52 static const struct resource omap3_vrfb_resources[] = {
53 	DEFINE_RES_MEM_NAMED(0x6C000180u, 0xc0, "vrfb-regs"),
54 	DEFINE_RES_MEM_NAMED(0x70000000u, 0x4000000, "vrfb-area-0"),
55 	DEFINE_RES_MEM_NAMED(0x74000000u, 0x4000000, "vrfb-area-1"),
56 	DEFINE_RES_MEM_NAMED(0x78000000u, 0x4000000, "vrfb-area-2"),
57 	DEFINE_RES_MEM_NAMED(0x7c000000u, 0x4000000, "vrfb-area-3"),
58 	DEFINE_RES_MEM_NAMED(0xe0000000u, 0x4000000, "vrfb-area-4"),
59 	DEFINE_RES_MEM_NAMED(0xe4000000u, 0x4000000, "vrfb-area-5"),
60 	DEFINE_RES_MEM_NAMED(0xe8000000u, 0x4000000, "vrfb-area-6"),
61 	DEFINE_RES_MEM_NAMED(0xec000000u, 0x4000000, "vrfb-area-7"),
62 	DEFINE_RES_MEM_NAMED(0xf0000000u, 0x4000000, "vrfb-area-8"),
63 	DEFINE_RES_MEM_NAMED(0xf4000000u, 0x4000000, "vrfb-area-9"),
64 	DEFINE_RES_MEM_NAMED(0xf8000000u, 0x4000000, "vrfb-area-10"),
65 	DEFINE_RES_MEM_NAMED(0xfc000000u, 0x4000000, "vrfb-area-11"),
66 };
67 
68 int __init omap_init_vrfb(void)
69 {
70 	struct platform_device *pdev;
71 	const struct resource *res;
72 	unsigned int num_res;
73 
74 	if (cpu_is_omap24xx()) {
75 		res = omap2_vrfb_resources;
76 		num_res = ARRAY_SIZE(omap2_vrfb_resources);
77 	} else if (cpu_is_omap34xx()) {
78 		res = omap3_vrfb_resources;
79 		num_res = ARRAY_SIZE(omap3_vrfb_resources);
80 	} else {
81 		return 0;
82 	}
83 
84 	pdev = platform_device_register_resndata(NULL, "omapvrfb", -1,
85 			res, num_res, NULL, 0);
86 
87 	return PTR_RET(pdev);
88 }
89 #else
90 int __init omap_init_vrfb(void) { return 0; }
91 #endif
92 
93 #if defined(CONFIG_FB_OMAP2) || defined(CONFIG_FB_OMAP2_MODULE)
94 
95 static u64 omap_fb_dma_mask = ~(u32)0;
96 static struct omapfb_platform_data omapfb_config;
97 
98 static struct platform_device omap_fb_device = {
99 	.name		= "omapfb",
100 	.id		= -1,
101 	.dev = {
102 		.dma_mask		= &omap_fb_dma_mask,
103 		.coherent_dma_mask	= DMA_BIT_MASK(32),
104 		.platform_data		= &omapfb_config,
105 	},
106 	.num_resources = 0,
107 };
108 
109 int __init omap_init_fb(void)
110 {
111 	return platform_device_register(&omap_fb_device);
112 }
113 #else
114 int __init omap_init_fb(void) { return 0; }
115 #endif
116