Add support for the new COUNTER_EVENT_DIRECTION_CHANGE to the
counter_watch_events tool.

Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://lore.kernel.org/r/20250110-counter-ti-eqep-add-direction-support-v2-3-c6b6f96d2db9@baylibre.com
Signed-off-by: William Breathitt Gray <wbg@kernel.org>

Ignore the executable counter_watch_events when building in-tree.

Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://lore.kernel.org/r/20250110-counter-ti-eqep-add-direction-support-v2-1-c6b6f96d2db9@baylibre.com
Signed-off-by: William Breathitt Gray <wbg@kernel.org>

./tools/counter/counter_watch_events.c:233:3-4: Unneeded semicolon
./tools/counter/counter_watch_events.c:234:2-3: Unneeded semicolon
./tools/counter/counter_watch_events.c:333:2-3: Unneeded semicolon

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=7782
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Reviewed-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Link: https://lore.kernel.org/r/20231220005143.84987-1-yang.lee@linux.alibaba.com
Signed-off-by: William Breathitt Gray <william.gray@linaro.org>

There are two spelling mistakes in the help text. Fix them.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Reviewed-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Link: https://lore.kernel.org/r/20231219133015.365943-1-colin.i.king@gmail.com
Signed-off-by: William Breathitt Gray <william.gray@linaro.org>

This adds a new counter tool to be able to test various watch events.
A flexible watch array can be populated from command line, each field
may be tuned with a dedicated command line sub-option in "--watch" string.
Several watch events can be defined, each can have specific watch options,
by using "--watch <watch 1 options> --watch <watch 2 options>".
Watch options is a comma separated list.

It also comes with a simple default watch (to monitor overflow/underflow
events), used when no watch parameters are provided. It's equivalent to:
counter_watch_events -w comp_count,scope_count,evt_ovf_udf

The print_usage() routine proposes another example, from the command line,
which generates a 2 elements watch array, to monitor:
- overflow underflow events
- capture events, on channel 3, that reads read captured data by
  specifying the component id (capture3_component_id being 7 here).

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Link: https://lore.kernel.org/r/20231213173117.4174511-2-fabrice.gasnier@foss.st.com
Signed-off-by: William Breathitt Gray <william.gray@linaro.org>

Use rm -df instead of rmdir -p since rmdir requires the directory exist
so it causes "make -C tools clean" failed if someone only builds other
tools but not counter.

Fixes: 228354ed692f ("tools/counter: Makefile: Remove lingering 'include' directories on make clean")
Signed-off-by: Anh Tuan Phan <tuananhlfc@gmail.com>
Link: https://lore.kernel.org/r/d4080db5-1825-2848-079a-8bb674d8ee44@gmail.com/
Signed-off-by: William Breathitt Gray <william.gray@linaro.org>

`make` creates 'include' directories where necessary, so remove them as
appropriate on `make clean`.

Signed-off-by: Rong Tao <rongtao@cestc.cn>
Link: https://lore.kernel.org/r/tencent_F85E314661100B0CE2845EB27E2E2F558C09@qq.com/
Signed-off-by: William Breathitt Gray <william.gray@linaro.org>

Ignore counter_example and include/linux/counter.h.

Signed-off-by: Rong Tao <rongtao@cestc.cn>
Link: https://lore.kernel.org/r/tencent_3E0341A1C9AC8FCB7915E7D791D117445707@qq.com/
Signed-off-by: William Breathitt Gray <william.gray@linaro.org>

$(or ...) is available since GNU Make 3.81, and useful to shorten the
code in some places.

Covert as follows:

  $(if A,A,B)  -->  $(or A,B)

This patch also converts:

  $(if A, A, B) --> $(or A, B)

Strictly speaking, the latter is not an equivalent conversion because
GNU Make keeps spaces after commas; if A is not empty, $(if A, A, B)
expands to " A", while $(or A, B) expands to "A".

Anyway, preceding spaces are not significant in the code hunks I touched.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>

This creates an example Counter program under tools/counter/*
to exemplify the Counter character device interface.

Cc: Pavel Machek <pavel@ucw.cz>
Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Link: https://lore.kernel.org/r/7c0f975ba098952122302d258ec9ffdef04befaf.1632884256.git.vilhelm.gray@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>