u-boot.git/include/linux/compat.h, branch v2018.03-rc2

dm: define dev_*() log functions in DM header

2017-10-04T16:00:20+00:00

Many drivers had started to use dev_err, dev_info, etc. for log
functions.  Currently, we are relying on , but I
guess the best home is , taking into account that
Linux defines them in .

For now, I am leaving the ones in  because lots of
Linux-originated code uses dev_*(), but the first argument is not
struct udevice, so we need to ignore the bogus argument.  More
efforts are needed to iron out the issues.

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

bug.h: move runtime BUG/WARN macros into

2017-10-04T16:00:20+00:00

Collect runtime BUG/WARN into a self-contained header 
to make these macros easier to use.

Signed-off-by: Masahiro Yamada

printk: collect printk stuff into with loglevel support

2017-10-04T14:31:17+00:00

When we import code from Linux, with regular re-sync planned, we want
to use printk() and pr_*().  U-Boot does not support them in a clean
way.  So, people end up with local macros, or compat headers here and
there, then we occasionally see build errors of definition conflicts.

We have include/linux/compat.h, but putting all sorts of unrelated
things into a single header is just a temporal workaround.  Hence this
patch, to find the best home for all printk variants.  If you want to
use printk() and friends, please include .  This header
is self-contained, and pulls in only a few headers.

When I was testing this clean-up, I noticed the image size exceeded
its platform limit on some boards.  This is because all pr_*() that
were previously defined as no-op in include/linux/mtd/mtd.h (unless
CONFIG_MTD_DEBUG is set), are now enabled.

To make such boards happy, this commit also implements CONFIG_LOGLEVEL.
The concept is similar to the kernel parameter "loglevel".  (Actually,
the Kconfig help message was taken from kernel-paremeter.txt of Linux)
Messages with a loglevel smaller than console loglevel will be printed.

The difference is the loglevel is build-time determined.  To save the
image size, lower priority pr_*() are compiled out.  I set the default
of CONFIG_LOGLEVEL to 6, i.e. pr_notice and higher priority messages
are compiled in.

I adjusted CONFIG_LOGLEVEL to avoid build error for some boards.

Signed-off-by: Masahiro Yamada 
[trini: Add in SPL_LOGLEVEL that is the same as LOGLEVEL]
Signed-off-by: Tom Rini

treewide: remove unneeded semicolons

2017-06-16T14:11:38+00:00

Signed-off-by: Masahiro Yamada

Update WARN_ON() to return a value

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

In linux v4.9 this returns a value. This saves checking the warning
condition twice in some code.

Update the U-Boot version to do this also.

Signed-off-by: Simon Glass

delay: collect {m, n, u}delay declarations to include/linux/delay.h

2017-01-14T21:46:28+00:00

Currently, mdelay() and udelay() are declared in include/common.h,
while ndelay() in include/linux/compat.h.  It would be nice to
collect them into include/linux/delay.h like Linux.

While we are here, fix the ndelay() implementation; I used the
DIV_ROUND_UP() instead of (x)/1000 because it must wait *longer*
than the given period of time.

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

linux/compat.h: Properly implement ndelay fallback

2016-11-28T20:10:34+00:00

Commit c68c62 ("i2c: mvtwsi: Make delay times frequency-dependent")
extensively used the ndelay function with a calculated parameter
which is dependant on the configured frequency of the I2C bus. If
standard speed is employed, the parameter is usually 10000 (10000ns
period length for 100kHz frequency).

But, since the arm architecture does not implement a proper version of
ndelay, the fallback default from include/linux/compat.h is used,
which defines every ndelay as udelay(1). This causes problems for
slower speeds on arm, since the delay time is now 9us too short for
the desired frequency, which leads to random failures of the I2C
interface.

To remedy this, we implement a proper, parameter-aware ndelay fallback
for architectures that don't implement a real ndelay function.

Reported-By: Jason Brown 
To: Tom Rini 
To: Heiko Schocher 
Signed-off-by: Mario Six

Move ENOTSUPP defines to include/linux/errno.h

2016-09-24T02:25:43+00:00

Collect a couple of duplicated defines into a single place.

Signed-off-by: Masahiro Yamada

linux/compat.h: add dev_warn()

2016-06-12T21:49:38+00:00

In order to prevent build errors for copied code from linux introduce
dev_warn().

Suggested-by: Scott Wood 
Signed-off-by: Andreas Bießmann 
Acked-by: Simon Glass

compat: Remove is_power_of_2() definition

2015-11-05T21:46:59+00:00

Use the is_power_of_2() definition from log2.h to align with the
kernel implementation.

Signed-off-by: Fabio Estevam 
Reviewed-by: Tom Rini 
Reviewed-by: Heiko Schocher 
Reviewed-by: Jagan Teki