kernel/linux.git/tools/gpio, branch v4.9.166

tools/gpio: Fix build error with musl libc

2018-02-03T16:05:34+00:00

commit 1696784eb7b52b13b62d160c028ef2c2c981d4f2 upstream. The GPIO tools build fails when using a buildroot toolchain that uses musl as it's C library: arm-broomstick-linux-musleabi-gcc -Wp,-MD,./.gpio-event-mon.o.d \ -Wp,-MT,gpio-event-mon.o -O2 -Wall -g -D_GNU_SOURCE \ -Iinclude -D"BUILD_STR(s)=#s" -c -o gpio-event-mon.o gpio-event-mon.c gpio-event-mon.c:30:6: error: unknown type name ‘u_int32_t’; did you mean ‘uint32_t’? u_int32_t handleflags, ^~~~~~~~~ uint32_t The glibc headers installed on my laptop include sys/types.h in unistd.h, but it appears that musl does not. Fixes: 97f69747d8b1 ("tools/gpio: add the gpio-event-mon tool") Signed-off-by: Joel Stanley Signed-off-by: Linus Walleij Signed-off-by: Greg Kroah-Hartman

tools/gpio: fix gpio-event-mon header comment

2016-08-08T07:50:22+00:00

Fixes: 97f69747d8b1 ('tools/gpio: add the gpio-event-mon tool') Signed-off-by: Baruch Siach Signed-off-by: Linus Walleij

tools/gpio: add install section

2016-06-23T09:07:13+00:00

Allow user to call install target. Signed-off-by: Andy Shevchenko Acked-by: Alexandre Courbot Tested-by: Alexandre Courbot Signed-off-by: Linus Walleij

tools/gpio: move to tools buildsystem

2016-06-23T09:07:13+00:00

There is a nice buildsystem dedicated for userspace tools in Linux kernel tree. Switch gpio target to be built by it. Signed-off-by: Andy Shevchenko Acked-by: Alexandre Courbot Tested-by: Alexandre Courbot Signed-off-by: Linus Walleij

tools/gpio: add the gpio-event-mon tool

2016-06-15T07:29:29+00:00

The gpio-event-mon is used from userspace as an example of how to monitor GPIO line events. It will latch on to a certain GPIO line on a certain gpiochip and print timestamped events as they arrive. Example output: $ gpio-event-mon -n gpiochip2 -o 0 -r -f Monitoring line 0 on gpiochip2 Initial line value: 1 GPIO EVENT 946685798487609863: falling edge GPIO EVENT 946685798732482910: rising edge GPIO EVENT 946685799115997314: falling edge GPIO EVENT 946685799381469726: rising edge Signed-off-by: Linus Walleij

tools/gpio: add the gpio-hammer tool

2016-06-15T07:29:04+00:00

The gpio-hammer is used from userspace as an example of how to retrieve a GPIO handle for one or several GPIO lines and hammer the outputs from low to high and back again. It will pulse the selected lines once per second for a specified number of times or indefinitely if no loop count is supplied. Example output: $ gpio-hammer -n gpiochip0 -o5 -o6 -o7 Hammer lines [5, 6, 7] on gpiochip0, initial states: [1, 1, 1] [-] [5: 0, 6: 0, 7: 0] Tested-by: Michael Welling Signed-off-by: Linus Walleij

tools/gpio: Add missing initialization of device_name

2016-03-31T09:51:30+00:00

lsgpio.c: In function ‘main’: lsgpio.c:166:7: warning: ‘device_name’ may be used uninitialized in this functio n [-Wmaybe-uninitialized] ret = list_device(device_name); ^ Signed-off-by: Geert Uytterhoeven Signed-off-by: Linus Walleij

tools/gpio: Enable compiler optimization to catch more bugs

2016-03-31T09:50:21+00:00

Signed-off-by: Geert Uytterhoeven Signed-off-by: Linus Walleij

gpio: present the consumer of a line to userspace

2016-02-25T20:07:23+00:00

I named the field representing the current user of GPIO line as "label" but this is too vague and ambiguous. Before anyone gets confused, rename it to "consumer" and indicate clearly in the documentation that this is a string set by the user of the line. Also clean up leftovers in the documentation. Signed-off-by: Linus Walleij

tools: gpio: Small updates for output format

2016-02-23T13:20:58+00:00

Use %2d for the GPIO line number. This should align the results horziontally for most gpio chips. The GPIO label uses quotes for real values. For GPIO names this is currently missing. The patch adds the missing quote. Signed-off-by: Markus Pargmann Signed-off-by: Linus Walleij