From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Jan Kiszka <jan.kiszka@siemens.com>
Cc: 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 16:06:15 +0300 [thread overview]
Message-ID: <20190426130615.GT9224@smile.fi.intel.com> (raw)
In-Reply-To: <9377620b-d74a-04d9-a51e-8590400b1c0f@siemens.com>
On Wed, Apr 24, 2019 at 12:39:35PM +0200, Jan Kiszka wrote:
> On 24.04.19 12:33, Mika Westerberg wrote:
> > On Wed, Apr 24, 2019 at 12:19:02PM +0200, Jan Kiszka wrote:
> > > And even if that were possible, we would be back to the square of existing
> > > devices without those definitions. If this were a recent chipset, I would
> > > say, "go, fix future firmware versions". But this one is legacy.
> >
> > Is it fixing some real issue with these legacy platforms? I mean without
> > the patch some GPE event is not handled properly? It was not clear to me
> > from the commit message.
> >
>
> Without that patch, you are forced to poll for event changes in your
> application, timer-driven. There are application that cannot process these
> GPIOs because they lack such logic (mraa with node-red-node-intel-gpio is a
> public example).
Just a side note: MRAA is a hack itself. It abuses almost all interfaces Linux
kernel provides.
--
With Best Regards,
Andy Shevchenko
next prev parent reply other threads:[~2019-04-26 13:06 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 [this message]
2019-04-26 13:36 ` Jan Kiszka
2019-04-26 14:42 ` Enrico Weigelt, metux IT consult
2019-04-26 15:31 ` Manivannan Sadhasivam
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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