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/*
* Copyright (c) 2015 Google, Inc
* (C) Copyright 2001-2015
* DENX Software Engineering -- wd@denx.de
* Compulab Ltd - http://compulab.co.il/
* Bernecker & Rainer Industrieelektronik GmbH - http://www.br-automation.com
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <dm.h>
#include <video.h>
#include <video_console.h>
#include <video_font.h> /* Get font data, width and height */
/* By default we scroll by a single line */
#ifndef CONFIG_CONSOLE_SCROLL_LINES
#define CONFIG_CONSOLE_SCROLL_LINES 1
#endif
int vidconsole_putc_xy(struct udevice *dev, uint x, uint y, char ch)
{
struct vidconsole_ops *ops = vidconsole_get_ops(dev);
if (!ops->putc_xy)
return -ENOSYS;
return ops->putc_xy(dev, x, y, ch);
}
int vidconsole_move_rows(struct udevice *dev, uint rowdst, uint rowsrc,
uint count)
{
struct vidconsole_ops *ops = vidconsole_get_ops(dev);
if (!ops->move_rows)
return -ENOSYS;
return ops->move_rows(dev, rowdst, rowsrc, count);
}
int vidconsole_set_row(struct udevice *dev, uint row, int clr)
{
struct vidconsole_ops *ops = vidconsole_get_ops(dev);
if (!ops->set_row)
return -ENOSYS;
return ops->set_row(dev, row, clr);
}
/* Move backwards one space */
static void vidconsole_back(struct udevice *dev)
{
struct vidconsole_priv *priv = dev_get_uclass_priv(dev);
if (--priv->curr_col < 0) {
priv->curr_col = priv->cols - 1;
if (--priv->curr_row < 0)
priv->curr_row = 0;
}
vidconsole_putc_xy(dev, priv->curr_col * VIDEO_FONT_WIDTH,
priv->curr_row * VIDEO_FONT_HEIGHT, ' ');
}
/* Move to a newline, scrolling the display if necessary */
static void vidconsole_newline(struct udevice *dev)
{
struct vidconsole_priv *priv = dev_get_uclass_priv(dev);
struct udevice *vid_dev = dev->parent;
struct video_priv *vid_priv = dev_get_uclass_priv(vid_dev);
const int rows = CONFIG_CONSOLE_SCROLL_LINES;
int i;
priv->curr_col = 0;
/* Check if we need to scroll the terminal */
if (++priv->curr_row >= priv->rows) {
vidconsole_move_rows(dev, 0, rows, priv->rows - rows);
for (i = 0; i < rows; i++)
vidconsole_set_row(dev, priv->rows - i - 1,
vid_priv->colour_bg);
priv->curr_row -= rows;
}
video_sync(dev->parent);
}
int vidconsole_put_char(struct udevice *dev, char ch)
{
struct vidconsole_priv *priv = dev_get_uclass_priv(dev);
int ret;
switch (ch) {
case '\r':
priv->curr_col = 0;
break;
case '\n':
vidconsole_newline(dev);
break;
case '\t': /* Tab (8 chars alignment) */
priv->curr_col += 8;
priv->curr_col &= ~7;
if (priv->curr_col >= priv->cols)
vidconsole_newline(dev);
break;
case '\b':
vidconsole_back(dev);
break;
default:
/*
* Failure of this function normally indicates an unsupported
* colour depth. Check this and return an error to help with
* diagnosis.
*/
ret = vidconsole_putc_xy(dev,
priv->curr_col * VIDEO_FONT_WIDTH,
priv->curr_row * VIDEO_FONT_HEIGHT,
ch);
if (ret)
return ret;
if (++priv->curr_col >= priv->cols)
vidconsole_newline(dev);
break;
}
return 0;
}
static void vidconsole_putc(struct stdio_dev *sdev, const char ch)
{
struct udevice *dev = sdev->priv;
vidconsole_put_char(dev, ch);
}
static void vidconsole_puts(struct stdio_dev *sdev, const char *s)
{
struct udevice *dev = sdev->priv;
while (*s)
vidconsole_put_char(dev, *s++);
}
/* Set up the number of rows and colours (rotated drivers override this) */
static int vidconsole_pre_probe(struct udevice *dev)
{
struct vidconsole_priv *priv = dev_get_uclass_priv(dev);
struct udevice *vid = dev->parent;
struct video_priv *vid_priv = dev_get_uclass_priv(vid);
priv->rows = vid_priv->ysize / VIDEO_FONT_HEIGHT;
priv->cols = vid_priv->xsize / VIDEO_FONT_WIDTH;
return 0;
}
/* Register the device with stdio */
static int vidconsole_post_probe(struct udevice *dev)
{
struct vidconsole_priv *priv = dev_get_uclass_priv(dev);
struct stdio_dev *sdev = &priv->sdev;
int ret;
strlcpy(sdev->name, dev->name, sizeof(sdev->name));
sdev->flags = DEV_FLAGS_OUTPUT;
sdev->putc = vidconsole_putc;
sdev->puts = vidconsole_puts;
sdev->priv = dev;
ret = stdio_register(sdev);
if (ret)
return ret;
return 0;
}
UCLASS_DRIVER(vidconsole) = {
.id = UCLASS_VIDEO_CONSOLE,
.name = "vidconsole0",
.pre_probe = vidconsole_pre_probe,
.post_probe = vidconsole_post_probe,
.per_device_auto_alloc_size = sizeof(struct vidconsole_priv),
};
void vidconsole_position_cursor(struct udevice *dev, unsigned col, unsigned row)
{
struct vidconsole_priv *priv = dev_get_uclass_priv(dev);
priv->curr_col = min_t(short, col, priv->cols - 1);
priv->curr_row = min_t(short, row, priv->rows - 1);
}
static int do_video_setcursor(cmd_tbl_t *cmdtp, int flag, int argc,
char *const argv[])
{
unsigned int col, row;
struct udevice *dev;
if (argc != 3)
return CMD_RET_USAGE;
uclass_first_device(UCLASS_VIDEO_CONSOLE, &dev);
if (!dev)
return CMD_RET_FAILURE;
col = simple_strtoul(argv[1], NULL, 10);
row = simple_strtoul(argv[2], NULL, 10);
vidconsole_position_cursor(dev, col, row);
return 0;
}
static int do_video_puts(cmd_tbl_t *cmdtp, int flag, int argc,
char *const argv[])
{
struct udevice *dev;
const char *s;
if (argc != 2)
return CMD_RET_USAGE;
uclass_first_device(UCLASS_VIDEO_CONSOLE, &dev);
if (!dev)
return CMD_RET_FAILURE;
for (s = argv[1]; *s; s++)
vidconsole_put_char(dev, *s);
return 0;
}
U_BOOT_CMD(
setcurs, 3, 1, do_video_setcursor,
"set cursor position within screen",
" <col> <row> in character"
);
U_BOOT_CMD(
lcdputs, 2, 1, do_video_puts,
"print string on video framebuffer",
" <string>"
);
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