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dm: video: Add a 'normal' text console driver

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Most of the time we don't need to rotate the display so a simple font
blitting feature is enough for our purposes. Add a simple driver which
supports this function. It provides text output on the console using
the standard 8x16-pixel font.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Anatolij Gustschin <agust@denx.de>
This commit is contained in:
Simon Glass 2016-01-18 19:52:18 -07:00
parent 83510766c9
commit 72cded9ec0
2 changed files with 142 additions and 1 deletions
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2
drivers/video/Makefile
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@ -7,7 +7,7 @@
ifdef CONFIG_DM
obj-$(CONFIG_DISPLAY_PORT) += dp-uclass.o
obj-$(CONFIG_DM_VIDEO) += video-uclass.o vidconsole-uclass.o
obj-$(CONFIG_DM_VIDEO) += video-uclass.o vidconsole-uclass.o console_normal.o
endif
obj-$(CONFIG_ATI_RADEON_FB) += ati_radeon_fb.o videomodes.o

141
drivers/video/console_normal.c Normal file
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@ -0,0 +1,141 @@
/*
* 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 */
static int console_normal_set_row(struct udevice *dev, uint row, int clr)
{
struct video_priv *vid_priv = dev_get_uclass_priv(dev->parent);
void *line;
int pixels = VIDEO_FONT_HEIGHT * vid_priv->line_length;
int i;
line = vid_priv->fb + row * VIDEO_FONT_HEIGHT * vid_priv->line_length;
switch (vid_priv->bpix) {
#ifdef CONFIG_VIDEO_BPP8
case VIDEO_BPP8: {
uint8_t *dst = line;
for (i = 0; i < pixels; i++)
*dst++ = clr;
break;
}
#endif
#ifdef CONFIG_VIDEO_BPP16
case VIDEO_BPP16: {
uint16_t *dst = line;
for (i = 0; i < pixels; i++)
*dst++ = clr;
break;
}
#endif
#ifdef CONFIG_VIDEO_BPP32
case VIDEO_BPP32: {
uint32_t *dst = line;
for (i = 0; i < pixels; i++)
*dst++ = clr;
break;
}
#endif
default:
return -ENOSYS;
}
return 0;
}
static int console_normal_move_rows(struct udevice *dev, uint rowdst,
uint rowsrc, uint count)
{
struct video_priv *vid_priv = dev_get_uclass_priv(dev->parent);
void *dst;
void *src;
dst = vid_priv->fb + rowdst * VIDEO_FONT_HEIGHT * vid_priv->line_length;
src = vid_priv->fb + rowsrc * VIDEO_FONT_HEIGHT * vid_priv->line_length;
memmove(dst, src, VIDEO_FONT_HEIGHT * vid_priv->line_length * count);
return 0;
}
static int console_normal_putc_xy(struct udevice *dev, uint x, uint y, char ch)
{
struct udevice *vid = dev->parent;
struct video_priv *vid_priv = dev_get_uclass_priv(vid);
int i, row;
void *line = vid_priv->fb + y * vid_priv->line_length +
x * VNBYTES(vid_priv->bpix);
for (row = 0; row < VIDEO_FONT_HEIGHT; row++) {
uchar bits = video_fontdata[ch * VIDEO_FONT_HEIGHT + row];
switch (vid_priv->bpix) {
#ifdef CONFIG_VIDEO_BPP8
case VIDEO_BPP8: {
uint8_t *dst = line;
for (i = 0; i < VIDEO_FONT_WIDTH; i++) {
*dst++ = (bits & 0x80) ? vid_priv->colour_fg
: vid_priv->colour_bg;
bits <<= 1;
}
break;
}
#endif
#ifdef CONFIG_VIDEO_BPP16
case VIDEO_BPP16: {
uint16_t *dst = line;
for (i = 0; i < VIDEO_FONT_WIDTH; i++) {
*dst++ = (bits & 0x80) ? vid_priv->colour_fg
: vid_priv->colour_bg;
bits <<= 1;
}
break;
}
#endif
#ifdef CONFIG_VIDEO_BPP32
case VIDEO_BPP32: {
uint32_t *dst = line;
for (i = 0; i < VIDEO_FONT_WIDTH; i++) {
*dst++ = (bits & 0x80) ? vid_priv->colour_fg
: vid_priv->colour_bg;
bits <<= 1;
}
break;
}
#endif
default:
return -ENOSYS;
}
line += vid_priv->line_length;
}
return 0;
}
struct vidconsole_ops console_normal_ops = {
.putc_xy = console_normal_putc_xy,
.move_rows = console_normal_move_rows,
.set_row = console_normal_set_row,
};
U_BOOT_DRIVER(vidconsole_normal) = {
.name = "vidconsole0",
.id = UCLASS_VIDEO_CONSOLE,
.ops = &console_normal_ops,
};