| /* SPDX-License-Identifier: GPL-2.0+ */ |
| /* |
| * Copyright (c) 2015 Google, Inc |
| * (C) Copyright 2015 |
| * Bernecker & Rainer Industrieelektronik GmbH - http://www.br-automation.com |
| * (C) Copyright 2023 Dzmitry Sankouski <dsankouski@gmail.com> |
| */ |
| |
| #define FLIPPED_DIRECTION 1 |
| #define NORMAL_DIRECTION 0 |
| |
| /** |
| * struct console_simple_priv - Private data for this driver |
| * |
| * @video_fontdata font graphical representation data |
| */ |
| struct console_simple_priv { |
| struct video_fontdata *fontdata; |
| }; |
| |
| /** |
| * Checks if bits per pixel supported. |
| * |
| * @param bpix framebuffer bits per pixel. |
| * |
| * @returns 0, if supported, or else -ENOSYS. |
| */ |
| int check_bpix_support(int bpix); |
| |
| /** |
| * Fill 1 pixel in framebuffer, and go to next one. |
| * |
| * @param dstp a pointer to pointer to framebuffer. |
| * @param value value to write to framebuffer. |
| * @param pbytes framebuffer bytes per pixel. |
| * @param step framebuffer pointer increment. Usually is equal to pbytes, |
| * and may be negative to control filling direction. |
| */ |
| void fill_pixel_and_goto_next(void **dstp, u32 value, int pbytes, int step); |
| |
| /** |
| * Fills 1 character in framebuffer vertically. Vertically means we're filling char font data rows |
| * across the lines. |
| * |
| * @param pfont a pointer to character font data. |
| * @param line a pointer to pointer to framebuffer. It's a point for upper left char corner |
| * @param vid_priv driver private data. |
| * @fontdata font graphical representation data |
| * @param direction controls character orientation. Can be normal or flipped. |
| * When normal: When flipped: |
| *|-----------------------------------------------| |
| *| line stepping | | |
| *| | | stepping -> | |
| *| * | | * * * | |
| *| * * v | * | |
| *| * | * | |
| *| * | * * ^ | |
| *| * * * | * | | |
| *| | | | |
| *| stepping -> | line stepping | |
| *|---!!we're starting from upper left char corner| |
| *|-----------------------------------------------| |
| * |
| * @returns 0, if success, or else error code. |
| */ |
| int fill_char_vertically(uchar *pfont, void **line, struct video_priv *vid_priv, |
| struct video_fontdata *fontdata, bool direction); |
| |
| /** |
| * Fills 1 character in framebuffer horizontally. |
| * Horizontally means we're filling char font data columns across the lines. |
| * |
| * @param pfont a pointer to character font data. |
| * @param line a pointer to pointer to framebuffer. It's a point for upper left char corner |
| * @param vid_priv driver private data. |
| * @fontdata font graphical representation data |
| * @param direction controls character orientation. Can be normal or flipped. |
| * When normal: When flipped: |
| *|-----------------------------------------------| |
| *| * | line stepping | |
| *| ^ * * * * * | | | |
| *| | * * | v * * | |
| *| | | * * * * * | |
| *| line stepping | * | |
| *| | | |
| *| stepping -> | <- stepping | |
| *|---!!we're starting from upper left char corner| |
| *|-----------------------------------------------| |
| * |
| * @returns 0, if success, or else error code. |
| */ |
| int fill_char_horizontally(uchar *pfont, void **line, struct video_priv *vid_priv, |
| struct video_fontdata *fontdata, bool direction); |
| |
| /** |
| * console probe function. |
| * |
| * @param dev a pointer to device. |
| * |
| * @returns 0, if success, or else error code. |
| */ |
| int console_probe(struct udevice *dev); |