From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marc Zyngier Subject: [PATCH v5 1/7] genirq: Add irqchip_set_wake_parent Date: Mon, 23 Feb 2015 17:44:13 +0000 Message-ID: <1424713459-6824-2-git-send-email-marc.zyngier@arm.com> References: <1424713459-6824-1-git-send-email-marc.zyngier@arm.com> Return-path: Received: from foss.arm.com ([217.140.101.70]:60552 "EHLO usa-sjc-mx-foss1.foss.arm.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752611AbbBWRod (ORCPT ); Mon, 23 Feb 2015 12:44:33 -0500 In-Reply-To: <1424713459-6824-1-git-send-email-marc.zyngier@arm.com> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: Benoit Cousson , Tony Lindgren , Nishanth Menon , Santosh Shilimkar , Jason Cooper , Thomas Gleixner , Rob Herring , Mark Rutland Cc: linux-arm-kernel@lists.infradead.org, linux-omap@vger.kernel.org This proves to be useful with stacked domains, when the current domain doesn't implement wake-up, but expect the parent to do so. Signed-off-by: Marc Zyngier --- include/linux/irq.h | 1 + kernel/irq/chip.c | 16 ++++++++++++++++ 2 files changed, 17 insertions(+) diff --git a/include/linux/irq.h b/include/linux/irq.h index d09ec7a..3057c48 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -460,6 +460,7 @@ extern void irq_chip_eoi_parent(struct irq_data *data); extern int irq_chip_set_affinity_parent(struct irq_data *data, const struct cpumask *dest, bool force); +extern int irq_chip_set_wake_parent(struct irq_data *data, unsigned int on); #endif /* Handling of unhandled and spurious interrupts: */ diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c index 6f1c7a5..eb9a4ea 100644 --- a/kernel/irq/chip.c +++ b/kernel/irq/chip.c @@ -948,6 +948,22 @@ int irq_chip_retrigger_hierarchy(struct irq_data *data) return -ENOSYS; } + +/** + * irq_chip_set_wake_parent - Set/reset wake-up on the parent interrupt + * @data: Pointer to interrupt specific data + * @on: Whether to set or reset the wake-up capability of this irq + * + * Conditional, as the underlying parent chip might not implement it. + */ +int irq_chip_set_wake_parent(struct irq_data *data, unsigned int on) +{ + data = data->parent_data; + if (data->chip->irq_set_wake) + return data->chip->irq_set_wake(data, on); + + return -ENOSYS; +} #endif /** -- 2.1.4