From: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
To: "Enrico Weigelt, metux IT consult" <lkml@metux.net>
Cc: Jan Kiszka <jan.kiszka@siemens.com>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Mika Westerberg <mika.westerberg@linux.intel.com>,
Linus Walleij <linus.walleij@linaro.org>,
Bartosz Golaszewski <bgolaszewski@baylibre.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-gpio@vger.kernel.org, linux-acpi@vger.kernel.org,
"Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Subject: Re: [PATCH 2/2] gpio: sch: Add interrupt support
Date: Fri, 26 Apr 2019 21:01:50 +0530 [thread overview]
Message-ID: <20190426153150.GA28444@Mani-XPS-13-9360> (raw)
In-Reply-To: <bc856e19-470d-7655-5680-a031831ab513@metux.net>
On Fri, Apr 26, 2019 at 04:42:35PM +0200, Enrico Weigelt, metux IT consult wrote:
> On 26.04.19 15:36, Jan Kiszka wrote:
>
> > At the same time, there are no real alternatives - to my> knowledge - for the value it brings (various bindings) to simply
> switch> the engine.
> Which value exactly does that collection of crude wrappers and broken
> attempts to buypass the kernel (driving gpios via /dev/mem *facepalm*)
> provide ?
>
/dev/mem access to gpio's were done during the sysfs days (yes to bypass
the kernel interface) but now mraa will use chardev if the kernel is
chardev supported. Still, it just behaves the way you want (/dev/mem was
also optional back then) and I couldn't find a better alternative for playing
in the userspace with multiple languages.
-Mani
> mraa belongs to the category of software, I would never put onto any
> production system. (yes, I already had a client who asked me to repair
> his mraa-based software. finally, I've replaced mraa w/ a few LoC ...)
>
>
> --mtx
>
> --
> Enrico Weigelt, metux IT consult
> Free software and Linux embedded engineering
> info@metux.net -- +49-151-27565287
next prev parent reply other threads:[~2019-04-26 15:32 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-18 9:23 [PATCH 0/2] gpio: sch: Interrupt support Jan Kiszka
2019-04-18 9:23 ` [PATCH 1/2] gpio: sch: Remove write-only core_base Jan Kiszka
2019-04-23 11:09 ` Linus Walleij
2019-04-18 9:23 ` [PATCH 2/2] gpio: sch: Add interrupt support Jan Kiszka
2019-04-23 11:10 ` Linus Walleij
2019-04-24 7:58 ` Mika Westerberg
2019-04-24 8:12 ` Jan Kiszka
2019-04-24 8:18 ` Mika Westerberg
2019-04-24 8:25 ` Jan Kiszka
2019-04-24 8:42 ` Mika Westerberg
2019-04-24 9:36 ` Jan Kiszka
2019-04-24 9:45 ` Mika Westerberg
2019-04-24 9:48 ` Jan Kiszka
2019-04-24 10:01 ` Mika Westerberg
2019-04-24 10:19 ` Jan Kiszka
2019-04-24 10:33 ` Mika Westerberg
2019-04-24 10:39 ` Jan Kiszka
2019-04-24 10:46 ` Mika Westerberg
2019-04-24 12:41 ` Jan Kiszka
2019-04-24 13:13 ` Mika Westerberg
2019-04-24 14:24 ` Jan Kiszka
2019-04-24 15:33 ` Mika Westerberg
2019-04-26 13:06 ` Andy Shevchenko
2019-04-26 13:36 ` Jan Kiszka
2019-04-26 14:42 ` Enrico Weigelt, metux IT consult
2019-04-26 15:31 ` Manivannan Sadhasivam [this message]
2019-04-26 16:03 ` Jan Kiszka
2019-04-26 17:20 ` Andy Shevchenko
2019-04-26 17:33 ` Manivannan Sadhasivam
2019-04-26 17:39 ` Jan Kiszka
2019-04-26 17:46 ` Manivannan Sadhasivam
2019-04-26 17:52 ` Jan Kiszka
2019-04-26 17:56 ` Manivannan Sadhasivam
2019-04-26 17:44 ` Andy Shevchenko
2019-04-26 17:52 ` Manivannan Sadhasivam
2019-04-26 18:26 ` Andy Shevchenko
2019-04-26 17:37 ` Jan Kiszka
2019-04-29 11:09 ` Enrico Weigelt, metux IT consult
2019-05-16 12:20 ` Linus Walleij
2019-04-26 14:41 ` Linus Walleij
2019-04-26 15:44 ` Jan Kiszka
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