91 lines
3.1 KiB
C
91 lines
3.1 KiB
C
/*
|
|
* Copyright (C) 2023 Daniele Lacamera <root@danielinux.net>
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Lesser General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef FRAMEBUFFER_INCLUDED
|
|
#define FRAMEBUFFER_INCLUDED
|
|
|
|
#include <stdint.h>
|
|
|
|
struct fb_ops;
|
|
|
|
|
|
struct fb_info {
|
|
struct fb_var_screeninfo var; /* Current var */
|
|
//struct fb_fix_screeninfo fix; /* Current fix */
|
|
struct fb_videomode *mode; /* current mode */
|
|
//struct backlight_device *bl_dev;
|
|
|
|
struct fb_ops *fbops;
|
|
struct device *dev; /* This is this fb device */
|
|
uint8_t *screen_buffer; /* Framebuffer address */
|
|
};
|
|
|
|
struct fb_ops {
|
|
/* open/release and usage marking */
|
|
int (*fb_open)(struct fb_info *info);
|
|
int (*fb_release)(struct fb_info *info);
|
|
|
|
/* checks var and eventually tweaks it to something supported,
|
|
* DO NOT MODIFY PAR */
|
|
int (*fb_check_var)(struct fb_var_screeninfo *var, struct fb_info *info);
|
|
|
|
/* set the video mode according to info->var */
|
|
int (*fb_set_par)(struct fb_info *info);
|
|
|
|
/* set color registers in batch */
|
|
int (*fb_setcmap)(uint32_t *cmap, struct fb_info *info);
|
|
|
|
/* blank display */
|
|
int (*fb_blank)(struct fb_info *info);
|
|
|
|
/* Draws a rectangle */
|
|
//void (*fb_fillrect) (struct fb_info *info, const struct fb_fillrect *rect);
|
|
/* Copy data from area to another */
|
|
//void (*fb_copyarea) (struct fb_info *info, const struct fb_copyarea *region);
|
|
/* Draws a image to the display */
|
|
//void (*fb_imageblit) (struct fb_info *info, const struct fb_image *image);
|
|
|
|
/* Draws cursor */
|
|
//int (*fb_cursor) (struct fb_info *info, struct fb_cursor *cursor);
|
|
|
|
/* Rotates the display */
|
|
//void (*fb_rotate)(struct fb_info *info, int angle);
|
|
|
|
/* perform fb specific ioctl (optional) */
|
|
int (*fb_ioctl)(struct fb_info *info, unsigned int cmd, unsigned long arg);
|
|
|
|
/* teardown any resources to do with this framebuffer */
|
|
void (*fb_destroy)(struct fb_info *info);
|
|
};
|
|
|
|
|
|
#ifdef CONFIG_DEVFRAMEBUFFER
|
|
/* low-level drivers must call this register function first */
|
|
int register_framebuffer(struct fb_info *fb_info);
|
|
|
|
/* Higher level drivers may access fb screen directly */
|
|
unsigned char *framebuffer_get(void);
|
|
int framebuffer_setcmap(uint32_t *cmap);
|
|
|
|
/* kernel init */
|
|
int fb_init(void);
|
|
#else
|
|
# define register_framebuffer(...) ((-ENOENT))
|
|
# define fb_init() ((-ENOENT))
|
|
#endif
|
|
|
|
#endif
|