Commit 20adf85f34 ("linuxgpiod: add SWDIO buffer") introduces an
additional gpio for SWDIO direction, but does not release it at
driver's exit.
Release the gpio at exit.
Change-Id: If7ea31f79ffed04af585864e49bcf1f35e118bdd
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/7032
Tested-by: jenkins
Reviewed-by: Steve Marple <stevemarple@googlemail.com>
The SWDIO buffer requires a direction pin to select input or output
direction. Output is selected by a high logic level (matches
bcm2835gpio driver).
Change-Id: I240cb99a5dfea08121bb33d4b5e2108ce7597468
Signed-off-by: Steve Marple <stevemarple@googlemail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/6936
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
Allow passing optional gpiochip number before gpio number.
If no optional chip number is passed, the one from the 'gpiochip'
configuration directive is used.
Change-Id: I16933d81581d9af4d1600c5f9fdbc832ef3fda94
Signed-off-by: Laszlo Sitzer <dlsitzer@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/6742
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
This is a follow-up to 2f424b7eb, which added support for opendrain
srst, finishing up support for opendrain reset signals.
Signed-off-by: Alex Crawford <openocd@code.acrawford.com>
Change-Id: Ib79b2e12f2a9469fd6c53bb839c0d2e8e46103a4
Reviewed-on: https://review.openocd.org/c/openocd/+/6598
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
Some MCUs (e.g. the STM32F3) directly expose the internal reset line to
an external pin. When this signal is driven by a push/pull line, it can
actually be inhibited by the external driver. This results in a setup
where the MCU cannot reset itself, for example, by a watchdog timeout or
a sysreset request. To fix this condition, support for open drain output
on the SRST line is required.
Note that because `reset_config srst_open_drain` is the default, all
users of this adapter will switch over to an open drain output unless
explicitly configured otherwise.
Signed-off-by: Alex Crawford <openocd@code.acrawford.com>
Change-Id: I89b39b03aa03f826ed3c45793412780448940bcc
Reviewed-on: https://review.openocd.org/c/openocd/+/6559
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
Use a command group 'linuxgpiod' with subcommands instead of individual
commands with 'linuxgpiod_' prefix.
The old commands are still available for backward compatibility but
marked as deprecated.
Change-Id: Iad9b330363f81128ab1ec1cbc498df28ba2ca152
Signed-off-by: Marc Schink <dev@zapb.de>
Reviewed-on: http://openocd.zylin.com/6400
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
There are more than 1000 NULL comparisons to be aligned to the
coding style.
For recurrent NULL comparison it's preferable using trivial
scripts in order to minimize the review effort.
Patch generated automatically with the command:
sed -i PATTERN $(find src/ -type f)
where PATTERN is in the list:
's/(\([a-z][a-z0-9_]*\) == NULL)/(!\1)/g'
's/(\([a-z][a-z0-9_]*->[a-z][a-z0-9_]*\) == NULL)/(!\1)/g'
's/(\([a-z][a-z0-9_]*\.[a-z][a-z0-9_]*\) == NULL)/(!\1)/g'
's/(\([a-z][a-z0-9_]*\) != NULL)/(\1)/g'
's/(\([a-z][a-z0-9_]*->[a-z][a-z0-9_]*\) != NULL)/(\1)/g'
's/(\([a-z][a-z0-9_]*\.[a-z][a-z0-9_]*\) != NULL)/(\1)/g'
's/(NULL == \([a-z][a-z0-9_]*\))/(!\1)/g'
's/(NULL == \([a-z][a-z0-9_]*->[a-z][a-z0-9_]*\))/(!\1)/g'
's/(NULL == \([a-z][a-z0-9_]*\.[a-z][a-z0-9_]*\))/(!\1)/g'
's/(NULL != \([a-z][a-z0-9_]*\))/(\1)/g'
's/(NULL != \([a-z][a-z0-9_]*->[a-z][a-z0-9_]*\))/(\1)/g'
's/(NULL != \([a-z][a-z0-9_]*\.[a-z][a-z0-9_]*\))/(\1)/g'
Change-Id: Ida103e325d6d0600fb69c0b7a1557ee969db4417
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/6350
Tested-by: jenkins
Bitbang interface allows having a LED on one of the GPIO.
Let also linuxgpiod driver to specify and use the LED connection.
Change-Id: Id3d8772ee1808b92354fd073ba3947bacd8253ef
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/5770
Tested-by: jenkins
New adapter driver for GPIO bitbanging over Linux GPIO descriptors
through the library libgpiod.
On Debian based distribution, the package libgpiod-dev is required
for build.
Change-Id: I1ce1a4f1ca79096d6d476b01b523c8c10f2cac07
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/5559
Tested-by: jenkins
