Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754329Ab3ILPkp (ORCPT ); Thu, 12 Sep 2013 11:40:45 -0400 Received: from comal.ext.ti.com ([198.47.26.152]:49602 "EHLO comal.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753181Ab3ILPkn (ORCPT ); Thu, 12 Sep 2013 11:40:43 -0400 From: Sricharan R To: , , , , CC: , , , , , , Subject: [RFC PATCH 0/4] DRIVERS: IRQCHIP: Add crossbar irqchip driver Date: Thu, 12 Sep 2013 21:09:07 +0530 Message-ID: <1379000351-15672-1-git-send-email-r.sricharan@ti.com> X-Mailer: git-send-email 1.7.9.5 MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1987 Lines: 43 Some socs have a large number of interrupts requests to service the needs of its many peripherals and subsystems. All of the interrupt requests lines from the subsystems are not needed at the same time, so they have to be muxed to the controllers appropriately. In such places a interrupt controllers are preceded by an IRQ CROSSBAR that provides flexibility in muxing the device interrupt requests to the controller inputs. This series models the crossbar IP as a cascaded irqchip controller. The peripheral crossbar inputs are mapped on to the crossbar irq-domain. The driver then allocates a 'free' irq line and maps that to the actual interrupt controller's domain. So every external peripheral interrupt is routed through the crossbar handler. This series adds a crossbar driver and the DT bindings for the same. Also the DT nodes for DRA7xx SOC which has a IRQ crossbar has been added here. Sricharan R (4): DRIVERS: IRQCHIP: Add crossbar irqchip driver ARM: DTS: DRA: Add crossbar device binding ARM: DTS: DRA: Replace peripheral interrupt numbers with crossbar inputs. ARM: DRA: Kconfig: Enable crossbar irqchip driver for DRA7xx .../devicetree/bindings/arm/omap/irq-crossbar.txt | 39 ++ arch/arm/boot/dts/dra7.dtsi | 104 ++--- arch/arm/mach-omap2/Kconfig | 1 + drivers/irqchip/Kconfig | 9 + drivers/irqchip/Makefile | 1 + drivers/irqchip/irq-crossbar.c | 407 ++++++++++++++++++++ 6 files changed, 517 insertions(+), 44 deletions(-) create mode 100644 Documentation/devicetree/bindings/arm/omap/irq-crossbar.txt create mode 100644 drivers/irqchip/irq-crossbar.c -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/