Commit graph

33 commits

Author SHA1 Message Date
Simon Glass
775d33229f video: Avoid using #ifdef in vidconsole-uclass.c
This code does not really need to use #ifdef. We can use if() instead and
gain build coverage without impacting code size.

Change the #ifdefs to use CONFIG_IS_ENABLED() instead.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-01-02 16:25:25 +01:00
Anatolij Gustschin
ca5655d800 video: add guards around 16bpp/32bbp code
Many boards use only single depth configuration, for such boards
there is some unused code in video and console uclass routines.
Add guards to avoid dead code.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
Tested-by: Eugen Hristev <eugen.hristev@microchip.com>
Tested-by: Patrice Chotard <patrice.chotard@st.com>
Tested-by: Steffen Dirkwinkel <s.dirkwinkel@beckhoff.com>
2019-12-06 16:37:45 +01:00
Marek Vasut
e63168a9ff video: Factor out vidconsole_put_string()
Pull the vidconsole_put_string() function from DM tests, make it
available to e.g. boards that want to display information on the
LCD on boot.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Anatolij Gustschin <agust@denx.de>
Reviewed-by: Anatolij Gustschin <agust@denx.de>
2019-05-20 12:00:05 +02:00
Andre Przywara
7035ec3cb3 video/console: Factor out actual character output
In preparation for doing character set translations, factor out the
actual glyph display functionality into a separate function.
This will be used in a subsequent patch.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2019-04-14 14:18:47 +02:00
Andre Przywara
4422294cbe video/console: Implement ANSI clear line command
There is a standard ANSI terminal escape sequence to clear a whole line
of text. So far the DM_VIDEO console was missing this code.

Detect the sequence and use vidconsole_set_row with the background
colour to fix this omission.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2019-04-14 14:18:47 +02:00
Andre Przywara
29c158b90d video/console: Implement relative cursor movement ANSI handling
The ANSI terminal escapce sequence standard defines relative cursor
movement commands (ESC [ A-F). So far the DM_VIDEO console code was
ignoring them.

Interpret those sequences and move the cursor by the requested amount of
rows or columns in the right direction. This brings the code on par with
the legacy video console driver (cfb_console).

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2019-04-14 14:18:47 +02:00
Andre Przywara
eabb0725d4 video/console: Implement reverse video ANSI sequence for DM_VIDEO
The video console for DM_VIDEO compliant drivers only understands a very
small number of ANSI sequences. First and foremost it misses the "reverse
video" command, which is used by our own bootmenu command to highlight
the selected entry.

To avoid forcing people to use their imagination when using the
bootmenu, let's just implement the rather simple reverse effect. We need
to store the background colour index for that, so that we can
recalculate both the foreground and background colour pixel values.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
[agust: merged BG color escape seq change to fix "ut dm video_ansi" test]
Signed-off-by: Anatolij Gustschin <agust@denx.de>
2019-04-14 14:18:47 +02:00
Tom Rini
430c166bce Merge branch 'master' of git://git.denx.de/u-boot-video 2018-11-26 15:52:51 -05:00
Simon Glass
b9f210a35c video: Update video_set_default_colors() to support invert
It is useful to be able to invert the colours in some cases so that the
text matches the background colour. Add a parameter to the function to
support this.

It is strange that function takes a private data structure from another
driver as an argument. It seems better to pass the device and have the
function internally work out how to find its required information.

Signed-off-by: Simon Glass <sjg@chromium.org>
2018-11-20 19:14:22 -07:00
Heinrich Schuchardt
118f020d9a dm: video: correctly set the cursor position
The terminal escape sequence ESC [ <x> ; <y> H is used to set the cursor
position. According to the ECMA 48 standard the upper left corner in the
escape sequences is [1, 1]. The video uclass uses [0, 0] as upper left
corner.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
2018-11-17 11:35:39 +01:00
Simon Glass
9949ee876d video: at91: Adjust vidconsole_position_cursor() to use char pos
At present this function uses pixels but it seems more useful for it to
position in terms of characters on the screen. This also matches the
comment to the function. Update this.

Unfortunately there is one user of this function (at91). Have a crack at
fixing this, since I cannot test it.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Anatolij Gustschin <agust@denx.de>
2018-10-09 04:40:27 -06:00
Simon Glass
55d39911c0 sandbox: video: Speed up video output
At present there are many situations where sandbox syncs the display to
the SDL frame buffer. This is a very expensive operation but is only
needed every now and then. Update video_sync() so that we can specify
whether this operation is really needed.

At present this flag is not used on other architectures. It could also
be used for reducing writeback-cache flushes but the benefit of that would
need to be investigated.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Anatolij Gustschin <agust@denx.de>
2018-10-09 04:40:27 -06:00
Heinrich Schuchardt
662f381aad dm: video: support more escape sequences
The EFI subsystems needs to know the size of the terminal. If the
environment variable

	stdout = serial,vidconsole

this size cannot be read from the video console. So the EFI subsystem
sends escape sequences to read the size. With this patch we get support
for the following escape sequences:

ESC "7"		Save cursor position
ESC "8"		Restore cursor position

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2018-09-28 18:25:39 +02:00
Heinrich Schuchardt
4b985e0035 dm: video: check bounds for column and row
CSI H can be used to position the cursor. The calling application may
specify a location that is beyond the limits of the screen. This may
lead to an illegal memory access.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-09-23 21:55:31 +02:00
Tom Rini
83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00
Heinrich Schuchardt
5fba532954 video: indicate code page of bitmap fonts
Add comments clarifying that the bitmap fonts support code page 437.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2018-03-06 10:22:37 +01:00
Heinrich Schuchardt
9ffa4d12a8 dm: video: support increased intensity (bold)
Support special rendition code 0 - reset attributes.
Support special rendition code 1 - increased intensity (bold).

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
2018-03-06 10:05:49 +01:00
Heinrich Schuchardt
5c30fbb8ec dm: video: use constants to refer to colors
Use constants to refer to colors.
Adjust initialization of foreground and background color to avoid
setting reserved bits.
Consistently u32 instead of unsigned for color bit mask.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
2018-03-06 10:03:20 +01:00
Heinrich Schuchardt
3aeb0cbe12 dm: video: show correct colors in graphical console
Get RGB sequence in pixels right (swap blue and red).
Do not set reserved bits.

qemu-system-i386 -display sdl -vga virtio and
qemu-system-i386 -display sdl -vga cirrus
now display the similar colors (highlighting still missing) as
qemu-system-i386 -nographic

Testing is possible via

	setenv efi_selftest test output
	bootefi selftest

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
2018-03-06 10:00:32 +01:00
Rob Clark
703d885c22 dm: video: Add color ANSI escape sequence support
Note that this doesn't differentiate (due to lack of information in
video_priv) between different possible component orders for 32bpp.
But the main user at this point is efi_loader, and GOP expects xBGR
so any video drivers that this is incorrect for already have problems.
(Also, conveniently, this matches what simple-framebuffer bindings
expect for kernels that use the simple-framebuffer DT binding to
take over the bootloader display.)

Signed-off-by: Rob Clark <robdclark@gmail.com>
2017-09-29 17:55:16 +02:00
Rob Clark
a085aa1f27 dm: video: Add basic ANSI escape sequence support
Really just the subset that is needed by efi_console.  Perhaps more will
be added later, for example color support would be useful to implement
efi_cout_set_attribute().

Signed-off-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-09-29 17:53:21 +02:00
Rob Clark
889808da9b dm: video: Fix cache flushes
Content can come to screen via putc() and we cannot always rely on
updates ending with a puts().  This is the case with efi_console output
to vidconsole.  Fixes corruption with Shell.efi.

Signed-off-by: Rob Clark <robdclark@gmail.com>
2017-09-29 17:51:29 +02:00
Simon Glass
fb0b709eff dm: video: Sync display on backspace
We should sync the display (e.g. flush cache) when backspace is pressed
to ensure that the character is erased correctly.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Anatolij Gustschin <agust@denx.de>
Tested-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Tested-on: Beaver, Jetson-TK1
2017-07-11 10:08:20 -06:00
Masahiro Yamada
720873bf42 video: squash lines for immediate return
For vidconsole_post_probe(), it is common coding style to let a
probe method return the value of a register function.

The others will become simple wrapper functions.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Anatolij Gustschin <agust@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Stephen Warren <swarren@nvidia.com>
2016-09-23 17:53:45 -04:00
Simon Glass
3f603cbbb8 dm: Use uclass_first_device_err() where it is useful
Use this new function in places where it simplifies the code.

Signed-off-by: Simon Glass <sjg@chromium.org>
2016-03-14 15:34:50 -06:00
Simon Glass
bbc8a8b4cc dm: video: Flush the cache after a puts()
This helps keep the display consistent. puts() is used when printing the
prompt, so is a useful way to make sure the current display contents is
visible.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2016-02-16 09:17:50 -07:00
Simon Glass
7b9f7e445e video: Provide a backspace method
With proportional fonts the vidconsole uclass cannot itself erase the
previous character. Provide an optional method so that the driver can
handle this operation.

Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-30 10:55:37 +01:00
Simon Glass
58c733a70f video: Provide a signal when a new console line is started
When we start a new line (due to the user pressing return), signal this to
the driver so that it can flush its buffer of character positions.

Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-30 10:55:27 +01:00
Simon Glass
c5b77d01d1 video: Provide a left margin for the text console
Allow the left margin to be set so that text does not have to be right up
against the left side. On some panels this makes it hard to read.

Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-30 10:55:15 +01:00
Simon Glass
5508f10ac9 video: Handle the 'bell' character
This can be sent when to many characters are entered. Make sure it is
ignored and does not cause a character to be displayed.

Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-30 10:55:02 +01:00
Simon Glass
f266178698 video: Use fractional units for X coordinates
With anti-aliased fonts we need a more fine-grained horizontal position
than a single pixel. Characters can be positioned to start part-way through
a pixel, with anti-aliasing (greyscale edges) taking care of the visual
effect.

To cope with this, use fractional units (1/256 pixel) for horizontal
positions in the text console.

Signed-off-by: Simon Glass <sjg@chromium.org>
[agust: rebased]
Signed-off-by: Anatolij Gustschin <agust@denx.de>
2016-01-30 10:53:26 +01:00
Simon Glass
f1a1247d89 video: Name consoles by their number
We must use the console name in the 'stdout' variable to select the one
we want. At present the name is formed from the driver name with a suffix
indicating the rotation value.

It seems better to name them sequentially since this can be controlled by
driver order. So adjust the code to use 'vidconsole' for the first,
'vidconsole1' for the second, etc.

Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-21 20:42:36 -07:00
Simon Glass
83510766c9 dm: video: Add a uclass for the text console
The existing LCD/video interface suffers from conflating the bitmap display
with text output on that display. As a result the implementation is more
complex than it needs to me.

We can support multiple text console drivers. Create a separate uclass to
support this, with its own API.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Anatolij Gustschin <agust@denx.de>
2016-01-20 19:10:15 -07:00