Merge branch 'for-linus' of git://git.o-hand.com/linux-rpurdie-backlight
[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 /* logo's are marked __initdata. Use __init_refok to tell
38  * modpost that it is intended that this function uses data
39  * marked __initdata.
40  */
41 const struct linux_logo * __init_refok fb_find_logo(int depth)
42 {
43         const struct linux_logo *logo = NULL;
44
45         if (depth >= 1) {
46 #ifdef CONFIG_LOGO_LINUX_MONO
47                 /* Generic Linux logo */
48                 logo = &logo_linux_mono;
49 #endif
50 #ifdef CONFIG_LOGO_SUPERH_MONO
51                 /* SuperH Linux logo */
52                 logo = &logo_superh_mono;
53 #endif
54         }
55         
56         if (depth >= 4) {
57 #ifdef CONFIG_LOGO_LINUX_VGA16
58                 /* Generic Linux logo */
59                 logo = &logo_linux_vga16;
60 #endif
61 #ifdef CONFIG_LOGO_SUPERH_VGA16
62                 /* SuperH Linux logo */
63                 logo = &logo_superh_vga16;
64 #endif
65         }
66         
67         if (depth >= 8) {
68 #ifdef CONFIG_LOGO_LINUX_CLUT224
69                 /* Generic Linux logo */
70                 logo = &logo_linux_clut224;
71 #endif
72 #ifdef CONFIG_LOGO_DEC_CLUT224
73                 /* DEC Linux logo on MIPS/MIPS64 or ALPHA */
74 #ifndef CONFIG_ALPHA
75                 if (mips_machgroup == MACH_GROUP_DEC)
76 #endif
77                         logo = &logo_dec_clut224;
78 #endif
79 #ifdef CONFIG_LOGO_MAC_CLUT224
80                 /* Macintosh Linux logo on m68k */
81                 if (MACH_IS_MAC)
82                         logo = &logo_mac_clut224;
83 #endif
84 #ifdef CONFIG_LOGO_PARISC_CLUT224
85                 /* PA-RISC Linux logo */
86                 logo = &logo_parisc_clut224;
87 #endif
88 #ifdef CONFIG_LOGO_SGI_CLUT224
89                 /* SGI Linux logo on MIPS/MIPS64 and VISWS */
90 #ifndef CONFIG_X86_VISWS
91                 if (mips_machgroup == MACH_GROUP_SGI)
92 #endif
93                         logo = &logo_sgi_clut224;
94 #endif
95 #ifdef CONFIG_LOGO_SUN_CLUT224
96                 /* Sun Linux logo */
97                 logo = &logo_sun_clut224;
98 #endif
99 #ifdef CONFIG_LOGO_SUPERH_CLUT224
100                 /* SuperH Linux logo */
101                 logo = &logo_superh_clut224;
102 #endif
103 #ifdef CONFIG_LOGO_M32R_CLUT224
104                 /* M32R Linux logo */
105                 logo = &logo_m32r_clut224;
106 #endif
107         }
108         return logo;
109 }
110 EXPORT_SYMBOL_GPL(fb_find_logo);