From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arnd Bergmann Subject: Re: [PATCH v2 1/1] Input: gpio_keys - add device tree support for interrupt only keys Date: Thu, 13 Nov 2014 12:00:16 +0100 Message-ID: <1616597.6UJpl1xeSr@wuerfel> References: <1415808176-13282-1-git-send-email-alexander.stein@systec-electronic.com> <1763965.yCxTDubTPH@wuerfel> <4899804.1F6dNN1eJX@ws-stein> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7Bit Return-path: In-Reply-To: <4899804.1F6dNN1eJX@ws-stein> Sender: linux-input-owner@vger.kernel.org To: Alexander Stein Cc: Dmitry Torokhov , Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , linux-input@vger.kernel.org, devicetree@vger.kernel.org, linux-gpio@vger.kernel.org, Laxman Dewangan List-Id: devicetree@vger.kernel.org On Thursday 13 November 2014 11:52:48 Alexander Stein wrote: > On Thursday 13 November 2014 11:47:13, Arnd Bergmann wrote: > > Regarding your initial use case of testing interrupt polarity, would > > you have been able to do the same thing by looking at the interrupt > > count in /proc/interrupts? > > This is only possible if some driver actually requests this interrupt, no? Yes, I think that is correct, at least with sparseirq, which is now the default. For interrupts that are mapped by the irqchip, you can look up the number of spurious interrupts in /proc/irq//spurious. Arnd