Re: [libgpiod v2][PATCH v2] treewide: rework line configuration

[Kent Gibson <warthog618@gmail.com>]

On Thu, Sep 22, 2022 at 02:25:43PM +0200, Bartosz Golaszewski wrote:
> On Tue, Sep 13, 2022 at 6:14 PM Bartosz Golaszewski <brgl@bgdev.pl> wrote:
> >
> > This tries to get rid of the concept of defaults and overrides for line
> > properties from the library (or rather hide them from the users). While
> > this makes the C API a bit more complex, it allows for a more elegant
> > high-level interface.
> >
> > This patch is pretty big but I'll just give an overview here. I don't
> > expect a detailed review of every line.
> >
> > Low-level data structure model (as seen in the C API):
> >
> > We're adding a new structure - line_settings. It's a basic data class
> > that stores a set of line properties. The line_config object is simplified
> > and becomes a storage for the mappings between offsets and line_settings.
> >
> > We no longer require the user to store the offsets array in the
> > request_config. The offsets to request are simply those for which the
> > user explicitly added settings to the line_config. Subsequently, the
> > request_config structure becomes optional for the request.
> >
> > In C++ bindings this allows us to implement an elegant interface with
> > rust-like chained mutators. To that end, we're also introducing a new
> > intermediate class called request_builder that's returned by the chip's
> > prepare_request() method which exposes routines for storing the line
> > and request configs for the request we're making. For examples of
> > usage - see C++ tests and samples.
> >
> > Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
> 
> I merged this into next/libgpiod-2.0. Same for the gpiosim rework for
> C++. I want to progress on the python bindings front, get that into
> master and apply the tools changes and get those Rust bindings in too.
> 
> If there are some issues, we can rework them later when doing a new
> API review before tagging v2.0-rc1.
> 

I have my tool updates rebased to that (in the twools_v3 branch in my
github repo - in case I get hit by a bus), but can you update to the
latest gpio.h and add the corresponding GPIOD_LINE_EVENT_CLOCK_HTE so we
can support HTE?

Cheers,
Kent.