[152b1e3] | 1 | /* |
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| 2 | ///////////////////////////////////////////////////////////////////////////// |
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| 3 | // $Header$ |
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| 4 | // |
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| 5 | // Copyright (c) 2000 - Rosimildo da Silva |
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| 6 | // |
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| 7 | // MODULE DESCRIPTION: |
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| 8 | // Micro FrameBuffer interface for Embedded Systems. |
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| 9 | // |
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| 10 | // MODIFICATION/HISTORY: |
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| 11 | // |
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| 12 | // $Log$ |
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| 13 | // |
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| 14 | ///////////////////////////////////////////////////////////////////////////// |
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| 15 | */ |
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| 16 | #ifndef _MW_FB_H |
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| 17 | #define _MW_FB_H |
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| 18 | |
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| 19 | #ifdef __cplusplus |
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| 20 | extern "C" { |
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| 21 | #endif |
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| 22 | |
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| 23 | /* ioctls |
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| 24 | 0x46 is 'F' */ |
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| 25 | #define FB_SCREENINFO 0x4601 |
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| 26 | #define FB_GETPALETTE 0x4602 |
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| 27 | #define FB_SETPALETTE 0x4603 |
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| 28 | #define FB_EXEC_FUNCTION 0x4604 |
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| 29 | |
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| 30 | |
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| 31 | #define FB_TYPE_PACKED_PIXELS 0 /* Packed Pixels */ |
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| 32 | #define FB_TYPE_PLANES 1 /* Non interleaved planes */ |
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| 33 | #define FB_TYPE_INTERLEAVED_PLANES 2 /* Interleaved planes */ |
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| 34 | #define FB_TYPE_TEXT 3 /* Text/attributes */ |
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| 35 | #define FB_TYPE_VGA_PLANES 4 /* EGA/VGA planes */ |
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| 36 | #define FB_TYPE_VIRTUAL_BUFFER 5 /* Virtual Buffer */ |
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| 37 | |
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| 38 | |
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| 39 | #define FB_VISUAL_MONO01 0 /* Monochr. 1=Black 0=White */ |
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| 40 | #define FB_VISUAL_MONO10 1 /* Monochr. 1=White 0=Black */ |
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| 41 | #define FB_VISUAL_TRUECOLOR 2 /* True color */ |
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| 42 | #define FB_VISUAL_PSEUDOCOLOR 3 /* Pseudo color (like atari) */ |
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| 43 | #define FB_VISUAL_DIRECTCOLOR 4 /* Direct color */ |
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| 44 | #define FB_VISUAL_STATIC_PSEUDOCOLOR 5 /* Pseudo color readonly */ |
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| 45 | |
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| 46 | #define FB_ACCEL_NONE 0 /* no hardware accelerator */ |
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| 47 | |
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| 48 | /* no dependency on any other header file */ |
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| 49 | typedef unsigned long __u32; |
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| 50 | typedef unsigned short __u16; |
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| 51 | |
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| 52 | struct fb_screeninfo { |
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| 53 | __u32 xres; /* visible resolution */ |
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| 54 | __u32 yres; |
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| 55 | __u32 bits_per_pixel; /* guess what */ |
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| 56 | __u32 line_length; /* number of chars per line */ |
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| 57 | volatile char *smem_start; /* Start of frame buffer mem */ |
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| 58 | /* (physical address) */ |
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| 59 | __u32 smem_len; /* Length of frame buffer mem */ |
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| 60 | __u32 type; /* see FB_TYPE_* */ |
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| 61 | __u32 visual; /* see FB_VISUAL_* */ |
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| 62 | |
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| 63 | }; |
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| 64 | |
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| 65 | struct fb_cmap { |
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| 66 | __u32 start; /* First entry */ |
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| 67 | __u32 len; /* Number of entries */ |
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| 68 | __u16 *red; /* Red values */ |
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| 69 | __u16 *green; |
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| 70 | __u16 *blue; |
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| 71 | __u16 *transp; /* transparency, can be NULL */ |
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| 72 | }; |
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| 73 | |
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| 74 | /* type of function to be executed at the driver level */ |
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| 75 | #define FB_FUNC_ENTER_GRAPHICS 0 |
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| 76 | #define FB_FUNC_EXIT_GRAPHICS 1 |
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| 77 | #define FB_FUNC_IS_DIRTY 2 |
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| 78 | #define FB_FUNC_GET_MODE 3 |
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| 79 | |
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| 80 | struct fb_exec_function |
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| 81 | { |
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| 82 | int func_no; |
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| 83 | void *param; |
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| 84 | }; |
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| 85 | |
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| 86 | |
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| 87 | /* Micro Framebuffer API Wrapper */ |
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| 88 | |
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| 89 | /* |
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| 90 | * This function returns the information regarding the display. |
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| 91 | * It is called just after the driver be opened to get all needed |
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| 92 | * information about the driver. No change in the mode of operation |
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| 93 | * of the driver is done with this call. |
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| 94 | */ |
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| 95 | extern int ufb_get_screen_info( int fd, struct fb_screeninfo *info ); |
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| 96 | |
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| 97 | |
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| 98 | /* |
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| 99 | * Returns the mode of the graphics subsystem |
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| 100 | */ |
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| 101 | extern int ufb_get_mode( int fd, int *mode ); |
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| 102 | |
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| 103 | |
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| 104 | /* |
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| 105 | * Returns the current collor pallete |
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| 106 | */ |
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| 107 | extern int ufb_get_palette( int fd, struct fb_cmap *color ); |
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| 108 | |
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| 109 | /* |
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| 110 | * Set the current collor pallete |
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| 111 | */ |
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| 112 | extern int ufb_set_palette( int fd, struct fb_cmap *color ); |
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| 113 | |
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| 114 | /* |
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| 115 | * Does all necessary initialization to put the device in |
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| 116 | * graphics mode |
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| 117 | */ |
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| 118 | extern int ufb_enter_graphics( int fd, int mode ); |
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| 119 | |
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| 120 | |
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| 121 | /* |
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| 122 | * Switch the device back to the default mode of operation. |
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| 123 | * In most cases it put the device back to plain text mode. |
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| 124 | */ |
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| 125 | extern int ufb_exit_graphics( int fd ); |
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| 126 | |
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| 127 | |
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| 128 | /* |
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| 129 | * Tell the driver that the "virtual buffer" is dirty, and an update |
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| 130 | * of it to the real device, maybe a serial/parallel LCD or whatever |
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| 131 | * is required |
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| 132 | */ |
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| 133 | extern int ufb_buffer_is_dirty( int fd ); |
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| 134 | |
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| 135 | |
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| 136 | /* |
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| 137 | * This function maps the physical ( kernel mode ) address of the framebuffer device |
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| 138 | * and maps it to the user space address. |
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| 139 | */ |
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| 140 | int ufb_mmap_to_user_space( int fd, void **fb_addr, void *physical_addr, unsigned long size ); |
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| 141 | |
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| 142 | |
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| 143 | |
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| 144 | /* |
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| 145 | * This function unmaps memory of the FB from the user's space |
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| 146 | */ |
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| 147 | int ufb_unmmap_from_user_space( int fd, void *addr ); |
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| 148 | |
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| 149 | #ifdef __cplusplus |
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| 150 | } |
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| 151 | #endif |
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| 152 | |
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| 153 | #endif /* _MW_FB_H */ |
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