linux.git/drivers/ptp/ptp_clockmatrix.c, branch for-next

Get rid of 'remove_new' relic from platform driver struct

2024-12-01T23:12:43+00:00

The continual trickle of small conversion patches is grating on me, and
is really not helping.  Just get rid of the 'remove_new' member
function, which is just an alias for the plain 'remove', and had a
comment to that effect:

  /*
   * .remove_new() is a relic from a prototype conversion of .remove().
   * New drivers are supposed to implement .remove(). Once all drivers are
   * converted to not use .remove_new any more, it will be dropped.
   */

This was just a tree-wide 'sed' script that replaced '.remove_new' with
'.remove', with some care taken to turn a subsequent tab into two tabs
to make things line up.

I did do some minimal manual whitespace adjustment for places that used
spaces to line things up.

Then I just removed the old (sic) .remove_new member function, and this
is the end result.  No more unnecessary conversion noise.

Signed-off-by: Linus Torvalds

move asm/unaligned.h to linux/unaligned.h

2024-10-02T21:23:23+00:00

asm/unaligned.h is always an include of asm-generic/unaligned.h;
might as well move that thing to linux/unaligned.h and include
that - there's nothing arch-specific in that header.

auto-generated by the following:

for i in `git grep -l -w asm/unaligned.h`; do
	sed -i -e "s/asm\/unaligned.h/linux\/unaligned.h/" $i
done
for i in `git grep -l -w asm-generic/unaligned.h`; do
	sed -i -e "s/asm-generic\/unaligned.h/linux\/unaligned.h/" $i
done
git mv include/asm-generic/unaligned.h include/linux/unaligned.h
git mv tools/include/asm-generic/unaligned.h tools/include/linux/unaligned.h
sed -i -e "/unaligned.h/d" include/asm-generic/Kbuild
sed -i -e "s/__ASM_GENERIC/__LINUX/" include/linux/unaligned.h tools/include/linux/unaligned.h

ptp: ptp_clockmatrix: Convert to platform remove callback returning void

2024-04-13T01:51:39+00:00

The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is ignored (apart
from emitting a warning) and this typically results in resource leaks.

To improve here there is a quest to make the remove callback return
void. In the first step of this quest all drivers are converted to
.remove_new(), which already returns void. Eventually after all drivers
are converted, .remove_new() will be renamed to .remove().

Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.

Signed-off-by: Uwe Kleine-König 
Acked-by: Richard Cochran 
Link: https://lore.kernel.org/r/0f0f5680c1a2a3ef19975935a2c6828a98bc4d25.1712734365.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Jakub Kicinski

ptp: ptp_clockmatrix: Add .getmaxphase ptp_clock_info callback

2023-06-20T08:02:33+00:00

Advertise the maximum offset the .adjphase callback is capable of
supporting in nanoseconds for IDT ClockMatrix devices. Depend on
ptp_clock_adjtime for handling out-of-range offsets. ptp_clock_adjtime
returns -ERANGE instead of clamping out-of-range offsets.

Cc: Richard Cochran 
Cc: Vincent Cheng 
Signed-off-by: Rahul Rameshbabu 
Signed-off-by: David S. Miller

ptp: ptp_clockmatrix: fix is_single_shot

2022-05-26T04:51:32+00:00

is_single_shot should return false for the power_of_2 mask

Fixes: bec67592521e ("ptp: ptp_clockmatrix: Add PTP_CLK_REQ_EXTTS support")
Signed-off-by: Min Li 
Link: https://lore.kernel.org/r/1653403501-12621-1-git-send-email-min.li.xe@renesas.com
Signed-off-by: Jakub Kicinski

ptp: ptp_clockmatrix: return -EBUSY if phase pull-in is in progress

2022-05-18T00:49:04+00:00

Also removes PEROUT_ENABLE_OUTPUT_MASK

Signed-off-by: Min Li 
Acked-by: Richard Cochran 
Link: https://lore.kernel.org/r/1652712427-14703-2-git-send-email-min.li.xe@renesas.com
Signed-off-by: Jakub Kicinski

ptp: ptp_clockmatrix: Add PTP_CLK_REQ_EXTTS support

2022-05-18T00:49:04+00:00

Use TOD_READ_SECONDARY for extts to keep TOD_READ_PRIMARY
for gettime and settime exclusively. Before this change,
TOD_READ_PRIMARY was used for both extts and gettime/settime,
which would result in changing TOD read/write triggers between
operations. Using TOD_READ_SECONDARY would make extts
independent of gettime/settime operation

Signed-off-by: Min Li 
Acked-by: Richard Cochran 
Link: https://lore.kernel.org/r/1652712427-14703-1-git-send-email-min.li.xe@renesas.com
Signed-off-by: Jakub Kicinski

ptp: ptp_clockmatrix: repair non-kernel-doc comment

2021-11-13T03:58:10+00:00

Do not use "/**" to begin a comment that is not in kernel-doc format.

Prevents this docs build warning:

drivers/ptp/ptp_clockmatrix.c:1679: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
    * Maximum absolute value for write phase offset in picoseconds

Then remove the kernel-doc-like function parameter descriptions
since they don't add any useful info. (suggested by Jakub)

Fixes: 794c3dffacc16 ("ptp: ptp_clockmatrix: Add support for FW 5.2 (8A34005)")
Signed-off-by: Randy Dunlap 
Reported-by: kernel test robot 
Cc: Min Li 
Acked-by: Richard Cochran 
Link: https://lore.kernel.org/r/20211111155034.29153-1-rdunlap@infradead.org
Signed-off-by: Jakub Kicinski

ptp: clockmatrix: use rsmu driver to access i2c/spi bus

2021-09-27T11:16:48+00:00

rsmu (Renesas Synchronization Management Unit ) driver is located in
drivers/mfd and responsible for creating multiple devices including
clockmatrix phc, which will then use the exposed regmap and mutex
handle to access i2c/spi bus.

Signed-off-by: Min Li 
Signed-off-by: David S. Miller

ptp: ptp_clockmatrix: Add support for pll_mode=0 and manual ref switch of WF and WP

2021-09-14T13:22:12+00:00

Also correct how initialize_dco_operating_mode is called

Signed-off-by: Min Li 
Signed-off-by: David S. Miller