From: sathyanarayanan kuppuswamy <sathyanarayanan.kuppuswamy@linux.intel.com>
To: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>,
Linus Walleij <linus.walleij@linaro.org>,
Alexandre Courbot <gnurou@gmail.com>,
Wolfram Sang <wsa@the-dreams.de>,
Octavian Purdila <octavian.purdila@intel.com>,
Robert Dolca <robert.dolca@intel.com>,
linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-acpi@vger.kernel.org
Subject: Re: [PATCH 0/2] ACPI: Translate Linux IRQ number directly from GpioInt
Date: Wed, 29 Apr 2015 10:45:44 -0700 [thread overview]
Message-ID: <554118C8.4020204@linux.intel.com> (raw)
In-Reply-To: <20150429092609.GP1534@lahna.fi.intel.com>
On 04/29/2015 02:26 AM, Mika Westerberg wrote:
> On Tue, Apr 28, 2015 at 10:36:48AM -0700, sathyanarayanan kuppuswamy wrote:
>>> This requires that the boot firmware (BIOS/coreboot) configures these pins
>>> correctly (input, etc) before handing over to OS. I've tested this on Intel
>>> Baytrail, Braswell and Skylake based machines where this is true.
>> Why not configure the GPIO pin as input in the API itself ?
> IIRC Octavian tried to do just that but it turned out that some of the
> irqchip functions are called with spinlock held, which means you can't
> call all gpiod_* functions there (as they might sleep).
Got it. Thanks.
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--
Sathyanarayanan Kuppuswamy
Android kernel developer
prev parent reply other threads:[~2015-04-29 17:45 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-28 15:05 [PATCH 0/2] ACPI: Translate Linux IRQ number directly from GpioInt Mika Westerberg
2015-04-28 15:05 ` [PATCH 1/2] gpio / ACPI: Add support for retrieving GpioInt resources from a device Mika Westerberg
2015-05-04 23:47 ` Rafael J. Wysocki
2015-05-05 12:29 ` Mika Westerberg
2015-04-28 15:05 ` [PATCH 2/2] i2c / ACPI: Assign IRQ for devices that have GpioInt automatically Mika Westerberg
2015-04-29 9:56 ` Wolfram Sang
2015-04-29 10:02 ` Mika Westerberg
2015-04-28 17:36 ` [PATCH 0/2] ACPI: Translate Linux IRQ number directly from GpioInt sathyanarayanan kuppuswamy
2015-04-29 9:26 ` Mika Westerberg
2015-04-29 17:45 ` sathyanarayanan kuppuswamy [this message]
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