use strtonum from libc (Kamil Rytarowski)

Reworked gpioctl(8) command to reflect recent gpio(4) changes.

Enable WARNS=4 by default, except for:
cpuctl dumplfs hprop ipf iprop-log kadmin kcm kdc kdigest
kimpersonate kstash ktutil makefs ndbootd ntp pppd quot
racoon racoonctl rtadvd sntp sup tcpdchk tcpdmatch tcpdump
traceroute traceroute6 user veriexecgen wsmoused zic
(Mostly third-party applications)

branches: 1.2.12;
Pass WARNS=4.

branches: 1.1.10;
Import userland utility for playing with gpio devices. From OpenBSD.

Be consistent in not marking up "GPIO".

gpioctl: implement support for "gpioctl gpioN list". Like pcictl(8).

For drivers that name their pins, this can be used to determine how the
logical pins are mapped to physical pins. Example from sunxigpio(4):

# gpioctl gpio0 list
0: PA0
1: PA1
2: PA2
...

Bump date for previous.

Document options to select alternate GPIO modes.

branches: 1.20.26;
Merge riastradh-drm2 to HEAD.

Use Mt for email addresses.

branches: 1.18.2;
Make it easier to use gpioctl(8) in shell scripts: Add a -s flag which
instructs gpioctl(8) to only output a single numeric value, either the
number of pins if no pin number was passed as argumenti, or, the current
state of the pin.

Remove stray 'To'.

branches: 1.16.6;
Fix a "lonely name".

Remove software pulsing in gpio(4), this functionality is now provided
by the gpiopwm(4) driver.

branches: 1.14.2;
Sort SEE ALSO.

Remove the GPIODETACH gpio(4) ioctl (it is still available in COMPAT_50) and
the 'detach' command line option from gpioctl(8). Drivers that are
attached to gpio pins can be detached using the drvctl(8) command.

It's actually 'the flag locator', not 'flags' (as 'flags' can not be used
as a locator name for reasons unknown to me.)

Add a ga_flags field to the gpio_attach structure to hand driver
specific flags to drivers being attached at gpio pins. gpioiic(4)
uses this to reverse the SDA/SCL signal order. gpioctl(8) accepts
the flag values as optional argument to the attach command.
While here, make sure we retain backwards compatability and wrap compat
code in #ifdef COMPAT_50/#endif.

Use Cm to mark up command arguments. Use An -nosplit to avoid linebreak in sentence.

Add a new ioctl, GPIOPULSE to gpio(4) to allow for pulsing a pin.
If a pin can pulse in hardware, that will be used, else it will
be pulsed in software. There is no way yet to set the pulse frequency
for pins that pulse in hardware. While here, make the code mpsafe and
allow more than one thread in the driver (access to ioctl is serialized).

Make some functions static, use getprogname() instead of
'extern char *__progname'.

Rename 'pulse' to 'pulsate' to make clear it is a continuous strain of
pulses and and not a single shot pulse that is emitted by devices
supporting this kind of operation.

Jonatha Kollasch has a GPIO device that can pulse the output lines.
Support it wuth the GPIO_PIN_PULSE attribute and the 'pulse' paramater
to gpioctl. Discussed with Jonathan.

Reworked gpioctl(8) command to reflect recent gpio(4) changes.

Add support for GPIO_PIN_PULLDOWN, GPIO_PIN_INVIN, GPIO_PIN_INVOUT,
from OpenBSD.

Xref gcscpcib(4).

branches: 1.2.10;
Remove default argument from .Nm. Add a missing article. Mention NetBSD import.

Import userland utility for playing with gpio devices. From OpenBSD.

If we can't read a pin while listing pins, simply continue on to next
pin rather than abort.

gpioctl: implement support for "gpioctl gpioN list". Like pcictl(8).

For drivers that name their pins, this can be used to determine how the
logical pins are mapped to physical pins. Example from sunxigpio(4):

# gpioctl gpio0 list
0: PA0
1: PA1
2: PA2
...

Merge the [pgoyette-compat] branch

add __RCSID

branches: 1.24.2;
Overhaul of GPIO interrupt support (that wasn't even used by anything).
- Remove the old, not-expressive-enough interrupt flags, and replace them
with a new set of interrupt-specific flags that can express a wide
variety of interrupt configurations (pos, neg, and double-edge, high
and low level).
- Remove old, unused gpio_pin_ctl_intr() and gpio_pin_irqen(), and
replace them with gpio_intr_establish(), gpio_intr_disestablish(),
and gpio_intr_str(). Corresponding fields in the gpio_chipset_tag
are also added for back-end controllers, which now handle the actual
dispatch of GPIO interrupts in order to properly support level-triggered
interrupts as well as interoperate properly with FDT-registered
interrupts.

Piggy-back on the 8.99.18 version bump.

Inspired by initial work from Brad Spencer.
PR kern/51676

branches: 1.23.14;
Fix pasto for GPIO_PIN_EVENTS/GPIO_PIN_LEVEL/GPIO_PIN_FALLING
(not used at this time)

pass new pin configuration flags to driver.

use strtonum from libc (Kamil Rytarowski)

Make it easier to use gpioctl(8) in shell scripts: Add a -s flag which
instructs gpioctl(8) to only output a single numeric value, either the
number of pins if no pin number was passed as argumenti, or, the current
state of the pin.

branches: 1.19.6;
Remove software pulsing in gpio(4), this functionality is now provided
by the gpiopwm(4) driver.

Second part of typo fixing cycle...

Fix typo.

branches: 1.16.2;
Remove the GPIODETACH gpio(4) ioctl (it is still available in COMPAT_50) and
the 'detach' command line option from gpioctl(8). Drivers that are
attached to gpio pins can be detached using the drvctl(8) command.

It's actually 'the flag locator', not 'flags' (as 'flags' can not be used
as a locator name for reasons unknown to me.)

Add a ga_flags field to the gpio_attach structure to hand driver
specific flags to drivers being attached at gpio pins. gpioiic(4)
uses this to reverse the SDA/SCL signal order. gpioctl(8) accepts
the flag values as optional argument to the attach command.
While here, make sure we retain backwards compatability and wrap compat
code in #ifdef COMPAT_50/#endif.

Bump (c) year.

static + __dead

Add a new ioctl, GPIOPULSE to gpio(4) to allow for pulsing a pin.
If a pin can pulse in hardware, that will be used, else it will
be pulsed in software. There is no way yet to set the pulse frequency
for pins that pulse in hardware. While here, make the code mpsafe and
allow more than one thread in the driver (access to ioctl is serialized).

use my NetBSD email address

Make some functions static, use getprogname() instead of
'extern char *__progname'.

Rename 'pulse' to 'pulsate' to make clear it is a continuous strain of
pulses and and not a single shot pulse that is emitted by devices
supporting this kind of operation.

Jonatha Kollasch has a GPIO device that can pulse the output lines.
Support it wuth the GPIO_PIN_PULSE attribute and the 'pulse' paramater
to gpioctl. Discussed with Jonathan.

Reworked gpioctl(8) command to reflect recent gpio(4) changes.

Staticify fully now.

KNF: bzero -> memset, use EXIT_{FAILURE,SUCCESS}, setprogname() and
getprogname(), etc.

Pass WARNS=4.

Add support for GPIO_PIN_PULLDOWN, GPIO_PIN_INVIN, GPIO_PIN_INVOUT,
from OpenBSD.

branches: 1.1.10;
Import userland utility for playing with gpio devices. From OpenBSD.

use strtonum from libc (Kamil Rytarowski)

Reworked gpioctl(8) command to reflect recent gpio(4) changes.