pins. Will be enhanced in the future to support sending events to
user space on edge-triggered interrupt events.
Based on initial work by Brad Spencer.
PR kern/51676
- 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
http://mail-index.netbsd.org/tech-kern/2016/04/28/msg020504.html
add gpio interrupt support to the gpio framework, and an implementation
for the allwinner gpio backend (tested on A20 only).
gpio(4) has new public functions:
- gpio_intr() called by backends when an interrupt condition for
a gpio pin is present
- gpio_find_device() and gpio_get_name(), support functions for
gpio(4) users, wich respectively returns a void * cookie for a gpio device
given its name, and returns the name given the cookie.
- gpio_pin_ctl_intr(), which is used to configure interrupts on a gpio pin and
registers a callback.
- gpio_pin_irqen(), which is used to mask/unmask interrupts on a pin.
Nothing in the NetBSD tree uses this yet, but I have a i2c driver
(at https://github.com/mbouyer/marine_chartplotter/tree/master/software/NetBSD/driver) which uses it.
Fixed bug in gpioiic_bb_set_bits(), which was introduced with the SDA/SCL-
reverse feature.
Now the driver is confirmed to work. Tested with Raspberry Pi GPIO.
glxsb); use aprint_normal()
>Category: kern
>Synopsis: spurious messages while booting silently (gpio, glxsb)
>Confidential: no
>Severity: non-critical
>Priority: medium
>Responsible: kern-bug-people
>State: open
>Class: sw-bug
>Submitter-Id: net
designated initializers.
I have not built every extant kernel so I have probably broken at
least one build; however I've also found and fixed some wrong
cdevsw/bdevsw entries so even if so I think we come out ahead.
passed to sysctl_createv() actually matches the declared type for
the item itself.
In the places where the caller specifies a function and a structure
address (typically the 'softc') an explicit (void *) cast is now needed.
Fixes bugs in sys/dev/acpi/asus_acpi.c sys/dev/bluetooth/bcsp.c
sys/kern/vfs_bio.c sys/miscfs/syncfs/sync_subr.c and setting
AcpiGbl_EnableAmlDebugObject.
(mostly passing the address of a uint64_t when typed as CTLTYPE_INT).
I've test built quite a few kernels, but there may be some unfixed MD
fallout. Most likely passing &char[] to char *.
Also add CTLFLAG_UNSIGNED for unsiged decimals - not set yet.
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.
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).
thorpej