Commit graph

23 commits

Author SHA1 Message Date
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
a84f559262 input: indicate that code page 437 is used
Add a comment indicating that the German key map assumes code page 437.

Add support for character ² (square sign) in the German key map.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2018-03-05 10:06:05 -05:00
Simon Glass
00caae6d47 env: Rename getenv/_f() to env_get()
We are now using an env_ prefix for environment functions. Rename these
two functions for consistency. Also add function comments in common.h.

Quite a few places use getenv() in a condition context, provoking a
warning from checkpatch. These are fixed up in this patch also.

Suggested-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Simon Glass <sjg@chromium.org>
2017-08-16 08:30:24 -04:00
Simon Glass
24b852a7a2 Move console definitions into a new console.h file
The console includes a global variable and several functions that are only
used by a small subset of U-Boot files. Before adding more functions, move
the definitions into their own header file.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-11-19 20:27:50 -07:00
Bin Meng
e5f330c482 input: Ban digit numbers if 'Num Lock' is not on
When 'Num Lock' is not on, we should not send these digit numbers
(0-9 and dot) to the output buffer.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
2015-11-19 20:13:42 -07:00
Bin Meng
377a069643 input: Change LED state bits to conform i8042 compatible keyboard
When sending LED update command to an i8042 compatible keyboard,
bit1 is 'Num Lock' and bit2 is 'Caps Lock' in the data byte. But
input library defines bit1 as 'Caps Lock' and bit2 as 'Num Lock'.
This causes a wrong LED to be set on an i8042 compatible keyboard.
Change the LED state bits to be i8042 compatible, and change the
keyboard flags as well.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
2015-11-19 20:13:42 -07:00
Bin Meng
cd810918fd input: Call keyboard's update_leds() method when the LEDs change
We should request keyboard to turn on/off its LED when detecting
any changes on the LEDs.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
Minor changes to allow this to build without CONFIG_DM_KEYBOARD:
Signed-off-by: Simon Glass <sjg@chromium.org>
2015-11-19 20:13:41 -07:00
Bin Meng
533c81a949 input: Save keyboard's LED state to correct place
Currently keyboard's LED state is wrongly saved to config->leds in
process_modifier(). It should really be config->flags.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
2015-11-19 20:13:41 -07:00
Simon Glass
3b5f6f5001 input: Allow updating of keyboard LEDs
Add a function which returns a new keyboard LED value when the LEDs need
updating.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2015-11-19 20:13:41 -07:00
Simon Glass
ba42034267 input: Handle caps lock
When caps lock is enabled we should convert lower case to upper case. Add
this to the input key processing so that caps lock works correctly.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
2015-11-19 20:13:41 -07:00
Simon Glass
a683d0d347 input: Adjust structure of code in process_modifier()
Move all the '!release' code into one block so that it is clear that it only
applies on key release.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2015-11-19 20:13:41 -07:00
Simon Glass
b1d7a1875e input: Support the German keymap
Add support for the German keymap, taken from i8042.c. This can be selected
when the input library it initialised.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2015-11-19 20:13:41 -07:00
Simon Glass
0b186c0825 input: Allow repeat filtering to be disabled
Generally the input library handles processing of a list of scanned keys.
Repeated keys need to be generated based on a timer in this case, since all
that is provided is a list of keys current depressed.

Keyboards which do their own scanning will resend codes when they want to
inject a repeating key. Provide a function which tells the input library to
accept repeating keys and not to try to second-guess the caller.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2015-11-19 20:13:40 -07:00
Simon Glass
3a85e4362a input: Add a function to add a keycode to the existing set
Most keyboards can be scanned to produce a list of the keycodes which are
depressed. With the i8042 keyboard this scanning is done internally and
only the processed results are returned.

In this case, when a key is pressed, a 'make' code is sent. When the key
is released a 'break' code is sent. This means that the driver needs to
keep track of which keys are pressed. It also means that any protocol error
can lead to stuck keys.

In order to support this type of keyboard, add a function when can be used
to provide a single keycode and either add it to the list of what is pressed
or remove it from the list. Then the normal input_send_keycodes() function
can be used to actually do the decoding work.

Add debugging to display the ASCII characters written to the input queue
also.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2015-11-19 20:13:40 -07:00
Simon Glass
77c7f0459f input: Add a few more keyboard keycodes
The slash and * are missing from the keycode tables. Add these so that
these keypad keys can be used.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-11-19 20:13:40 -07:00
Simon Glass
2e5513bda0 input: Correct keycode for Ctrl-Y
This code is currently incorrect, perhaps due to a typo. Fix it.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-11-19 20:13:40 -07:00
Simon Glass
66877b0f5f input: Add the keycode translation tables separately
Require the caller to add the keycode translation tables separately so that
it can select which ones to use. In a later patch we will add the option to
add German tables.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2015-11-19 20:13:40 -07:00
Simon Glass
92778b2784 input: Return -ENOSPC when there is not space
Return a useful error instead of -1 when something goes wrong.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2015-11-19 20:13:40 -07:00
Wolfgang Denk
1a4596601f Add GPL-2.0+ SPDX-License-Identifier to source files
Signed-off-by: Wolfgang Denk <wd@denx.de>
[trini: Fixup common/cmd_io.c]
Signed-off-by: Tom Rini <trini@ti.com>
2013-07-24 09:44:38 -04:00
Kim Phillips
c14e94e560 drivers/input/input.c: sparse fix
input.c:97:5: warning: symbol 'input_queue_ascii' was not declared. Should it be

Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Acked-by: Simon Glass <sjg@chromium.org>
2012-11-04 11:00:37 -07:00
Hung-Te Lin
44abe47deb input: Add ANSI 3.64 escape sequence generation.
To support Non-ASCII keys (ex, Fn, PgUp/Dn, arrow keys, ...), we need to
translate key code into escape sequence.

(Updated by sjg@chromium.org to move away from a function to store
keycodes, so we can easily record how many were sent. We now need to
return this from input_send_keycodes() so we know whether keys were
generated.)

Signed-off-by: Hung-Te Lin <hungte@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Rini <trini@ti.com>
2012-10-19 15:25:44 -07:00
Simon Glass
1b1d3e6461 input: Separate out keyboard repeat/delay from init
It is inconvenient to have to specify the keyboard repeat and delay at
init time if it is not yet available, so move this into a separate
function.

Some drivers will want to do this when their keyboard init routine
is actually called.

Signed-off-by: Simon Glass <sjg@chromium.org>
2012-10-15 11:54:04 -07:00
Simon Glass
9bc590e511 input: Add generic keyboard input handler
Add a module which understands converting key codes (or scan codes)
to ASCII characters. It includes FIFO support and can call back to
drivers to read new characters when its FIFO is empty.

Keycode maps are provided for un-modified, shift and ctrl keys.

The plan is to use this module where such mapping is required.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2012-05-15 08:31:39 +02:00