Input: constify function pointer tables (seq_operations)
[linux-2.6] / drivers / video / logo / logo.c
1
2 /*
3  *  Linux logo to be displayed on boot
4  *
5  *  Copyright (C) 1996 Larry Ewing (lewing@isc.tamu.edu)
6  *  Copyright (C) 1996,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
7  *  Copyright (C) 2001 Greg Banks <gnb@alphalink.com.au>
8  *  Copyright (C) 2001 Jan-Benedict Glaw <jbglaw@lug-owl.de>
9  *  Copyright (C) 2003 Geert Uytterhoeven <geert@linux-m68k.org>
10  */
11
12 #include <linux/linux_logo.h>
13 #include <linux/stddef.h>
14 #include <linux/module.h>
15
16 #ifdef CONFIG_M68K
17 #include <asm/setup.h>
18 #endif
19
20 #ifdef CONFIG_MIPS
21 #include <asm/bootinfo.h>
22 #endif
23
24 extern const struct linux_logo logo_linux_mono;
25 extern const struct linux_logo logo_linux_vga16;
26 extern const struct linux_logo logo_linux_clut224;
27 extern const struct linux_logo logo_dec_clut224;
28 extern const struct linux_logo logo_mac_clut224;
29 extern const struct linux_logo logo_parisc_clut224;
30 extern const struct linux_logo logo_sgi_clut224;
31 extern const struct linux_logo logo_sun_clut224;
32 extern const struct linux_logo logo_superh_mono;
33 extern const struct linux_logo logo_superh_vga16;
34 extern const struct linux_logo logo_superh_clut224;
35 extern const struct linux_logo logo_m32r_clut224;
36
37 static int nologo;
38 module_param(nologo, bool, 0);
39 MODULE_PARM_DESC(nologo, "Disables startup logo");
40
41 /* logo's are marked __initdata. Use __init_refok to tell
42  * modpost that it is intended that this function uses data
43  * marked __initdata.
44  */
45 const struct linux_logo * __init_refok fb_find_logo(int depth)
46 {
47         const struct linux_logo *logo = NULL;
48
49         if (nologo)
50                 return NULL;
51
52         if (depth >= 1) {
53 #ifdef CONFIG_LOGO_LINUX_MONO
54                 /* Generic Linux logo */
55                 logo = &logo_linux_mono;
56 #endif
57 #ifdef CONFIG_LOGO_SUPERH_MONO
58                 /* SuperH Linux logo */
59                 logo = &logo_superh_mono;
60 #endif
61         }
62         
63         if (depth >= 4) {
64 #ifdef CONFIG_LOGO_LINUX_VGA16
65                 /* Generic Linux logo */
66                 logo = &logo_linux_vga16;
67 #endif
68 #ifdef CONFIG_LOGO_SUPERH_VGA16
69                 /* SuperH Linux logo */
70                 logo = &logo_superh_vga16;
71 #endif
72         }
73         
74         if (depth >= 8) {
75 #ifdef CONFIG_LOGO_LINUX_CLUT224
76                 /* Generic Linux logo */
77                 logo = &logo_linux_clut224;
78 #endif
79 #ifdef CONFIG_LOGO_DEC_CLUT224
80                 /* DEC Linux logo on MIPS/MIPS64 or ALPHA */
81                 logo = &logo_dec_clut224;
82 #endif
83 #ifdef CONFIG_LOGO_MAC_CLUT224
84                 /* Macintosh Linux logo on m68k */
85                 if (MACH_IS_MAC)
86                         logo = &logo_mac_clut224;
87 #endif
88 #ifdef CONFIG_LOGO_PARISC_CLUT224
89                 /* PA-RISC Linux logo */
90                 logo = &logo_parisc_clut224;
91 #endif
92 #ifdef CONFIG_LOGO_SGI_CLUT224
93                 /* SGI Linux logo on MIPS/MIPS64 and VISWS */
94                 logo = &logo_sgi_clut224;
95 #endif
96 #ifdef CONFIG_LOGO_SUN_CLUT224
97                 /* Sun Linux logo */
98                 logo = &logo_sun_clut224;
99 #endif
100 #ifdef CONFIG_LOGO_SUPERH_CLUT224
101                 /* SuperH Linux logo */
102                 logo = &logo_superh_clut224;
103 #endif
104 #ifdef CONFIG_LOGO_M32R_CLUT224
105                 /* M32R Linux logo */
106                 logo = &logo_m32r_clut224;
107 #endif
108         }
109         return logo;
110 }
111 EXPORT_SYMBOL_GPL(fb_find_logo);