From patchwork Mon Nov 26 00:16:52 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Simon Horman X-Patchwork-Id: 1799851 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) by patchwork1.kernel.org (Postfix) with ESMTP id 532403FC23 for ; Mon, 26 Nov 2012 00:21:16 +0000 (UTC) Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1TcmOw-0006pP-Pj; Mon, 26 Nov 2012 00:18:19 +0000 Received: from kirsty.vergenet.net ([202.4.237.240]) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1TcmNn-0006V7-H6 for linux-arm-kernel@lists.infradead.org; Mon, 26 Nov 2012 00:17:09 +0000 Received: from ayumi.akashicho.tokyo.vergenet.net (p4024-ipbfp1903kobeminato.hyogo.ocn.ne.jp [114.172.131.24]) by kirsty.vergenet.net (Postfix) with ESMTP id 30111266CEF; Mon, 26 Nov 2012 11:17:02 +1100 (EST) Received: by ayumi.akashicho.tokyo.vergenet.net (Postfix, from userid 7100) id B24F4EDE102; Mon, 26 Nov 2012 09:16:59 +0900 (JST) From: Simon Horman To: linux-sh@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH 5/7] ARM: mach-shmobile: sh73a0: Allow initialisation of GIC by DT Date: Mon, 26 Nov 2012 09:16:52 +0900 Message-Id: <1353889014-17142-6-git-send-email-horms@verge.net.au> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1353889014-17142-1-git-send-email-horms@verge.net.au> References: <1353889014-17142-1-git-send-email-horms@verge.net.au> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20121125_191708_169579_6B0D37C9 X-CRM114-Status: GOOD ( 15.68 ) X-Spam-Score: -3.3 (---) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-3.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [202.4.237.240 listed in list.dnswl.org] -0.7 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: Paul Mundt , Magnus Damm , Simon Horman X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: linux-arm-kernel-bounces@lists.infradead.org Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org This allows the GIC interrupt controller of the sh73a0 SoC to be initialised using a flattened device tree blob. It does not allow the INTC interrupt controller which is also present on the sh73a0 SoC to be enabled via device tree. Nor does it handle sharing of interrupts between the GIC and INTC interrupt controllers. This limits the usefulness of this code to applications which only wish to access devices which use interrupts that can be handled by the GIC interrupt controller. Other applications should, for now, continue using non-device tree initialisation of the sh72a0 interrupt controllers. An example dts snippet follows: gic: interrupt-controller@f0001000 { compatible = "arm,cortex-a9-gic"; #interrupt-cells = <3>; #address-cells = <1>; interrupt-controller; reg = <0xf0001000 0x1000>, <0xf0000100 0x100>; }; Signed-off-by: Simon Horman --- arch/arm/mach-shmobile/include/mach/common.h | 1 + arch/arm/mach-shmobile/intc-sh73a0.c | 14 ++++++++++++++ 2 files changed, 15 insertions(+) diff --git a/arch/arm/mach-shmobile/include/mach/common.h b/arch/arm/mach-shmobile/include/mach/common.h index d47e215..b50447e 100644 --- a/arch/arm/mach-shmobile/include/mach/common.h +++ b/arch/arm/mach-shmobile/include/mach/common.h @@ -49,6 +49,7 @@ extern struct clk sh7372_extal1_clk; extern struct clk sh7372_extal2_clk; extern void sh73a0_init_irq(void); +extern void sh73a0_init_irq_dt(void); extern void sh73a0_map_io(void); extern void sh73a0_add_early_devices(void); extern void sh73a0_add_standard_devices(void); diff --git a/arch/arm/mach-shmobile/intc-sh73a0.c b/arch/arm/mach-shmobile/intc-sh73a0.c index f0c5e51..e492350 100644 --- a/arch/arm/mach-shmobile/intc-sh73a0.c +++ b/arch/arm/mach-shmobile/intc-sh73a0.c @@ -21,6 +21,7 @@ #include #include #include +#include #include #include #include @@ -464,3 +465,16 @@ void __init sh73a0_init_irq(void) sh73a0_pint1_cascade.handler = sh73a0_pint1_demux; setup_irq(gic_spi(34), &sh73a0_pint1_cascade); } + +#ifdef CONFIG_OF +static const struct of_device_id irq_of_match[] __initconst = { + { .compatible = "arm,cortex-a9-gic", .data = gic_of_init, }, + { }, +}; + +void __init sh73a0_init_irq_dt(void) +{ + of_irq_init(irq_of_match); + gic_arch_extn.irq_set_wake = sh73a0_set_wake; +} +#endif