u-boot.git/drivers/serial/serial-uclass.c, branch v2018.09

SPDX: Convert all of our single license tags to Linux Kernel style

2018-05-07T13:34:12+00:00

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

serial: Make full device search optional

2018-01-29T13:18:02+00:00

Commit 608b0c4ad4e5ec0c ("serial: Use next serial device if probing fails")
added code to search for more serial devices if the default one was not
probed correctly.

Unfortunately, that breaks omap3_evm. So while investigating why that is
the case, let's disable the full search for everyone but bcm283x where it
is needed.

Fixes: 608b0c4ad4e5ec0c ("serial: Use next serial device if probing fails")
Reported-by: Derald D. Woods 
Signed-off-by: Alexander Graf

serial: Use next serial device if probing fails

2018-01-28T17:27:33+00:00

Currently our serial device search chokes on the fact that the serial
probe function could fail. If it does, instead of searching for the next
usable serial device, it just quits.

This patch changes the fallback logic so that even when a serial device
was not probed correctly, we just try the next ones until we find one that
works.

Signed-off-by: Alexander Graf 
Reviewed-by: Simon Glass

serial: serial-uclass: Add generic serial RX buffer support

2017-08-24T03:00:47+00:00

Pasting longer lines into the U-Boot console prompt sometimes leads to
characters missing. One problem here is the small 16-byte FIFO of the
legacy NS16550 UART, e.g. on x86 platforms.

This patch now introduces a Kconfig option to enable RX buffer support
for all DM based serial drivers. With this option enabled, I was
able paste really long lines into the U-Boot console, without any
characters missing.

Signed-off-by: Stefan Roese 
Cc: Simon Glass 
Cc: Bin Meng 
Cc: Tom Rini 
Reviewed-by: Bin Meng 
Tested-by: Bin Meng

dm: console: Check for serial devices properly

2017-07-31T16:21:40+00:00

With driver model the serial device is often not called "serial". Mark
driver-model stdio devices so that they can be detected and we can look up
the uclass. This is a more reliable way of finding out whether the console
is connected to a serial device or not.

Signed-off-by: Simon Glass

spl: make SPL and normal u-boot stage use independent SYS_MALLOC_F_LEN

2017-07-27T12:59:03+00:00

Some platforms have very limited SRAM to run SPL code, so there may
not be the same amount space for a malloc pool before relocation in
the SPL stage as the normal U-Boot stage.

Make SPL and (the full) U-Boot stage use independent SYS_MALLOC_F_LEN,
so the size of pre-relocation malloc pool can be configured memory
space independently.

Signed-off-by: Andy Yan 
Reviewed-by: Tom Rini 
Acked-by: Philipp Tomsich 
Reviewed-by: Philipp Tomsich 
[fixed up commit-message:]
Signed-off-by: Philipp Tomsich

dm: serial: Add livetree support

2017-07-11T16:08:20+00:00

Add support for a live device tree to the core serial uclass.

Signed-off-by: Simon Glass 
Tested-by: Marcel Ziswiler 
Tested-on: Beaver, Jetson-TK1

dm: serial: Separate out the core serial-device finding code

2017-07-11T16:08:20+00:00

This function is quite long. Move the core code into a separate function
in preparation for adding livetree support.

Signed-off-by: Simon Glass 
Tested-by: Marcel Ziswiler 
Tested-on: Beaver, Jetson-TK1

serial: make serial_stub_* to static functions

2017-07-06T17:09:35+00:00

Add missing static to serial_stub_puts().

Unexport serial_stub_{getc,tstc} because they are used locally.

Signed-off-by: Masahiro Yamada 
Reviewed-by: Bin Meng 
Reviewed-by: Simon Glass

dm: core: Update lists_bind_fdt() to use ofnode

2017-06-01T13:03:08+00:00

Adjust this function to use an ofnode instead of an offset, so it can be
used with livetree. This involves updating all callers.

Signed-off-by: Simon Glass