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// 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>
*/
#include <video.h>
#include <video_console.h>
#include <dm.h>
#include <video_font.h>
#include "vidconsole_internal.h"
/**
* console_set_font() - prepare vidconsole for chosen font.
*
* @dev vidconsole device
* @fontdata pointer to font data struct
*/
static int console_set_font(struct udevice *dev, struct video_fontdata *fontdata)
{
struct console_simple_priv *priv = dev_get_priv(dev);
struct vidconsole_priv *vc_priv = dev_get_uclass_priv(dev);
struct video_priv *vid_priv = dev_get_uclass_priv(dev->parent);
debug("console_simple: setting %s font\n", fontdata->name);
debug("width: %d\n", fontdata->width);
debug("byte width: %d\n", fontdata->byte_width);
debug("height: %d\n", fontdata->height);
priv->fontdata = fontdata;
vc_priv->x_charsize = fontdata->width;
vc_priv->y_charsize = fontdata->height;
if (vid_priv->rot % 2) {
vc_priv->cols = vid_priv->ysize / fontdata->width;
vc_priv->rows = vid_priv->xsize / fontdata->height;
vc_priv->xsize_frac = VID_TO_POS(vid_priv->ysize);
} else {
vc_priv->cols = vid_priv->xsize / fontdata->width;
vc_priv->rows = vid_priv->ysize / fontdata->height;
}
return 0;
}
int check_bpix_support(int bpix)
{
if (bpix == VIDEO_BPP8 && CONFIG_IS_ENABLED(VIDEO_BPP8))
return 0;
else if (bpix == VIDEO_BPP16 && CONFIG_IS_ENABLED(VIDEO_BPP16))
return 0;
else if (bpix == VIDEO_BPP32 && CONFIG_IS_ENABLED(VIDEO_BPP32))
return 0;
else
return -ENOSYS;
}
inline void fill_pixel_and_goto_next(void **dstp, u32 value, int pbytes, int step)
{
u8 *dst_byte = *dstp;
if (pbytes == 4) {
u32 *dst = *dstp;
*dst = value;
}
if (pbytes == 2) {
u16 *dst = *dstp;
*dst = value;
}
if (pbytes == 1) {
u8 *dst = *dstp;
*dst = value;
}
*dstp = dst_byte + step;
}
int fill_char_vertically(uchar *pfont, void **line, struct video_priv *vid_priv,
struct video_fontdata *fontdata, bool direction)
{
int step, line_step, pbytes, bitcount, width_remainder, ret;
void *dst;
ret = check_bpix_support(vid_priv->bpix);
if (ret)
return ret;
pbytes = VNBYTES(vid_priv->bpix);
if (direction) {
step = -pbytes;
line_step = -vid_priv->line_length;
} else {
step = pbytes;
line_step = vid_priv->line_length;
}
width_remainder = fontdata->width % 8;
for (int row = 0; row < fontdata->height; row++) {
uchar bits;
bitcount = 8;
dst = *line;
for (int col = 0; col < fontdata->byte_width; col++) {
if (width_remainder) {
bool is_last_col = (fontdata->byte_width - col == 1);
if (is_last_col)
bitcount = width_remainder;
}
bits = pfont[col];
for (int bit = 0; bit < bitcount; bit++) {
u32 value = (bits & 0x80) ?
vid_priv->colour_fg :
vid_priv->colour_bg;
fill_pixel_and_goto_next(&dst,
value,
pbytes,
step
);
bits <<= 1;
}
}
*line += line_step;
pfont += fontdata->byte_width;
}
return ret;
}
int fill_char_horizontally(uchar *pfont, void **line, struct video_priv *vid_priv,
struct video_fontdata *fontdata, bool direction)
{
int step, line_step, pbytes, bitcount = 8, width_remainder, ret;
void *dst;
u8 mask;
ret = check_bpix_support(vid_priv->bpix);
if (ret)
return ret;
pbytes = VNBYTES(vid_priv->bpix);
if (direction) {
step = -pbytes;
line_step = vid_priv->line_length;
} else {
step = pbytes;
line_step = -vid_priv->line_length;
}
width_remainder = fontdata->width % 8;
for (int col = 0; col < fontdata->byte_width; col++) {
mask = 0x80;
if (width_remainder) {
bool is_last_col = (fontdata->byte_width - col == 1);
if (is_last_col)
bitcount = width_remainder;
}
for (int bit = 0; bit < bitcount; bit++) {
dst = *line;
for (int row = 0; row < fontdata->height; row++) {
u32 value = (pfont[row * fontdata->byte_width + col]
& mask) ? vid_priv->colour_fg : vid_priv->colour_bg;
fill_pixel_and_goto_next(&dst,
value,
pbytes,
step
);
}
*line += line_step;
mask >>= 1;
}
}
return ret;
}
int console_probe(struct udevice *dev)
{
return console_set_font(dev, fonts);
}
const char *console_simple_get_font_size(struct udevice *dev, uint *sizep)
{
struct console_simple_priv *priv = dev_get_priv(dev);
*sizep = priv->fontdata->width;
return priv->fontdata->name;
}
int console_simple_get_font(struct udevice *dev, int seq, struct vidfont_info *info)
{
info->name = fonts[seq].name;
return 0;
}
int console_simple_select_font(struct udevice *dev, const char *name, uint size)
{
struct video_fontdata *font;
for (font = fonts; font->name; font++) {
if (!strcmp(name, font->name)) {
console_set_font(dev, font);
return 0;
}
};
printf("no such font: %s, make sure it's name has <width>x<height> format\n", name);
return -ENOENT;
}
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