Commit graph

19 commits

Author SHA1 Message Date
Masahiro Yamada
5bc516ed66 delay: collect {m, n, u}delay declarations to include/linux/delay.h
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 <yamada.masahiro@socionext.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-01-14 16:46:28 -05:00
mario.six@gdsys.cc
ca388143ce linux/compat.h: Properly implement ndelay fallback
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 <Jason.brown@apcon.com>
To: Tom Rini <trini@konsulko.com>
To: Heiko Schocher <hs@denx.de>
Signed-off-by: Mario Six <mario.six@gdsys.cc>
2016-11-28 15:10:34 -05:00
Masahiro Yamada
4982f46420 Move ENOTSUPP defines to include/linux/errno.h
Collect a couple of duplicated defines into a single place.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2016-09-23 22:25:43 -04:00
Andreas Bießmann
88a7fffe38 linux/compat.h: add dev_warn()
In order to prevent build errors for copied code from linux introduce
dev_warn().

Suggested-by: Scott Wood <oss@buserror.net>
Signed-off-by: Andreas Bießmann <andreas@biessmann.org>
Acked-by: Simon Glass <sjg@chromium.org>
2016-06-12 23:49:38 +02:00
Fabio Estevam
f8fdb81f6c compat: Remove is_power_of_2() definition
Use the is_power_of_2() definition from log2.h to align with the
kernel implementation.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Jagan Teki <jteki@openedev.com>
2015-11-05 16:46:59 -05:00
Heiko Schocher
5219db8ae8 linux, compat: add missing definitions for ubi
add missing definitions for the ubi/ubifs sync
with linux 4.2, also change "#define kfree ..."
into a static inline, so prevent ubi compile error:

   CC      drivers/mtd/ubi/fastmap.o
drivers/mtd/ubi/fastmap.c: In function 'scan_pool':
drivers/mtd/ubi/fastmap.c:475:3: error: called object 'free' is not a function

Signed-off-by: Heiko Schocher <hs@denx.de>
2015-10-26 09:22:02 +01:00
Masahiro Yamada
6b9f9eadff linux_compat: handle __GFP_ZERO in kmalloc()
Currently, kzalloc() returns zero-filled memory, while kmalloc()
simply ignores the second argument and never fills the memory
area with zeros.

I want kmalloc(size, __GFP_ZERO) to behave as kzalloc() does,
which will make it easier to add more memory allocator variants.

With the introduction of __GFP_ZERO flag, going forward, kzmalloc()
variants can fall back to kmalloc() enabling the __GFP_ZERO flag.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Acked-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Lukasz Majewski <l.majewski@samsung.com>
2015-07-22 07:30:44 -06:00
Masahiro Yamada
ebc3328ccc linux_compat: move vzalloc() to header file as an inline function
The vzalloc(size) is equivalent to kzalloc(size, 0).  Move it to
include/linux/compat.h as an inline function in order to avoid the
function call overhead.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Acked-by: Simon Glass <sjg@chromium.org>
2015-07-22 07:30:39 -06:00
Masahiro Yamada
3721eaf28e linux_compat: remove cpu_relax() define
The macro cpu_relax() is defined by several headers in different
ways.

arch/{arm,avr32,mips}/include/asm/processor.h defines it as follows:
  #define cpu_relax()	barrier()

On the other hand, include/linux/compat.h defines it as follows:
  #define cpu_relax() do {} while (0)

If both headers are included from the same source file, the warning
  warning: "cpu_relax" redefined [enabled by default]
is displayed.

It effectively makes it impossible to include <linux/compat.h>
from some sources.  Drop the latter.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Acked-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Lukasz Majewski <l.majewski@samsung.com>
2015-07-22 07:30:37 -06:00
Kishon Vijay Abraham I
747a0a5b38 usb: dwc3: gadget: make dwc3 gadget build in uboot
Did a bunch of things to get dwc3/gadget.c compile in u-boot without
build errors and warnings
*) Changed the included header files to that used in u-boot.
*) Used dma_alloc_coherent and dma_free_coherent APIs of u-boot
*) removed sg support
*) remove jiffies and used a simple while loop
*) removed irq support and added a function to call these interrupt handler.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Reviewed-by: Lukasz Majewski <l.majewski@samsung.com>
2015-04-14 05:48:09 +02:00
Anton Habegger
dc2884315d ubifs: Import atomic_long operations from Linux
This commit is a preperation for a subsequent UBIFS commit
which needs atomic_long operations.

Therefor "include/asm-generic/atomic-long.h" is imported
from 1860e37 Linux 3.15

Signed-off-by: Anton Habegger <anton.habegger@gmail.com>
2015-01-28 07:42:35 +01:00
Masahiro Yamada
063ec38a75 linux/compat.h: remove redundant macro defines
__user and __iomem are defined in include/linux/compiler.h.
MAX_ERRNO is defined in include/linux/err.h.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-12-08 09:35:46 -05:00
Masahiro Yamada
cba1da495d include: move various macros to include/linux/kernel.h
U-Boot has imported various utility macros from Linux
scattering them to various places without consistency.

In include/common.h are min, max, min3, max3, ARRAY_SIZE, ALIGN,
container_of, DIV_ROUND_UP, etc.
In include/linux/compat.h are min_t, max_t, round_up, round_down,
etc.
We also have duplicated defines of min_t in some *.c files.

Moreover, we are suffering from too cluttered include/common.h.

This commit moves various macros that originate in
include/linux/kernel.h of Linux to their original position.

Note:
This commit simply moves the macros; the macros roundup,
min, max, min2, max3, ARRAY_SIZE are different
from those of Linux at this point.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-11-20 11:28:25 -05:00
Heiko Schocher
0c06db5983 lib, linux: move linux specific defines to linux/compat.h
- move linux specific defines from usb and video code
  into linux/compat.h
- move common linux specific defines from include/ubi_uboot.h
  to linux/compat.h
- add for new mtd/ubi/ubifs sync new needed linux specific
  defines to linux/compat.h

Signed-off-by: Heiko Schocher <hs@denx.de>
Cc: Marek Vasut <marex@denx.de>
Cc: Anatolij Gustschin <agust@denx.de>
[trini: Add spin_lock_irqsave/spin_unlock_irqrestore dummies from
usb/lin_gadet_compat.h]
Signed-off-by: Tom Rini <trini@ti.com>
2014-08-25 19:25:03 -04:00
Lijun Pan
8f2df5d369 linux/compat.h: port lower_32_bits and upper_32_bits from Linux
[backport from linux commit 204b885e and 218e180e7]
64 bit processors are becomming more and more popular.
lower_32_bits and upper_32_bits save our labor doing
shifts/manipulations like (u32)(n) and (u32)((n) >> 32).
They are good helpers in both little and big endian cases.
Port these two functions here from Linux:include/linux/kernel.h,
cater the comment message to little/big endian cases.
Later on, developers could include linux/compat.h if they want to
use these two functions.

Signed-off-by: Lijun Pan <Lijun.Pan@freescale.com>
2014-07-22 07:44:24 -04:00
Wu, Josh
2f96b06be5 linux/compat.h: move dev_err, dev_info and dev_dbg from usb driver to compat.h
Since kernel code current use many dev_xxx() instead of using printk. To
compatible, move those dev_xxx from usb driver to linux/compat.h. Then all
driver code can use dev_err, dev_info and dev_vdbg.

This patch also removed duplicated macro definitions in usb driver.

Signed-off-by: Josh Wu <josh.wu@atmel.com>
Acked-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
2013-08-22 16:50:29 +02:00
Kim Phillips
0d4c1c91bb include/linux/compat.h: fix warning: preprocessor token {__iomem, __user} redefined
include/linux/compat.h:4:9: warning: preprocessor token __user redefined
include/linux/compiler.h:7:10: this was the original definition
include/linux/compat.h:5:9: warning: preprocessor token __iomem redefined
include/linux/compiler.h:12:10: this was the original definition

fixup __iomem, __user definitions in compat.h code appears to be placed
there as a cover up from a code import from linux when u-boot didn't yet
have a compiler.h, introduced by commit
932394ac43 "Rewrite of NAND code based on
what is in 2.6.12 Linux kernel".

Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
2012-11-04 11:00:34 -07:00
Mike Frysinger
6777a3cf73 lin_gadget: use common linux/compat.h
Merge our duplicate definitions with the common header.

Also fix drivers/usb/gadget/s3c_udc_otg_xfer_dma.c to
use min() instead of min_t() since we remove the latter
from compat.h.

Additionally use memalign() directly as the lin_gadget
specific kmalloc() macro is removed from lin_gadget_compat.h
by this patch.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Anatolij Gustschin <agust@denx.de>
Cc: Lukasz Majewski <l.majewski@samsung.com>
2012-04-30 16:54:51 +02:00
Mike Frysinger
7b15e2bb9b linux/compat.h: rename from linux/mtd/compat.h
This lets us use it in more places than just mtd code.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2012-04-30 16:54:51 +02:00
Renamed from include/linux/mtd/compat.h (Browse further)