From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752875AbaKLNm5 (ORCPT ); Wed, 12 Nov 2014 08:42:57 -0500 Received: from www.linutronix.de ([62.245.132.108]:41607 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752828AbaKLNm4 (ORCPT ); Wed, 12 Nov 2014 08:42:56 -0500 Message-Id: <20141112134120.057028621@linutronix.de> User-Agent: quilt/0.63-1 Date: Wed, 12 Nov 2014 13:42:55 -0000 From: Thomas Gleixner To: LKML Cc: Jiang Liu , Bjorn Helgaas , Grant Likely , Marc Zyngier , Yingjoe Chen , Yijing Wang Subject: [patch 03/16] genirq: Introduce helper functions to support stacked irq_chip References: <20141112133941.647950773@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Content-Disposition: inline; filename=genirq-introduce-helper-functions-to-support-stacked-irq_chip.patch X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001,URIBL_BLOCKED=0.001 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jiang Liu Now we already support hierarchy irq_data, so introduce several helpers to support stacked irq_chips. Signed-off-by: Jiang Liu Cc: Bjorn Helgaas Cc: Grant Likely Cc: Marc Zyngier Cc: Yingjoe Chen Cc: Yijing Wang Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 5 +++++ kernel/irq/chip.c | 17 +++++++++++++++++ 2 files changed, 22 insertions(+) diff --git a/include/linux/irq.h b/include/linux/irq.h index 13ba412ce3a0..0adcbbbf2e87 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -443,6 +443,11 @@ extern void handle_percpu_devid_irq(unsigned int irq, struct irq_desc *desc); extern void handle_bad_irq(unsigned int irq, struct irq_desc *desc); extern void handle_nested_irq(unsigned int irq); +#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY +extern void irq_chip_ack_parent(struct irq_data *data); +extern int irq_chip_retrigger_hierarchy(struct irq_data *data); +#endif + /* Handling of unhandled and spurious interrupts: */ extern void note_interrupt(unsigned int irq, struct irq_desc *desc, irqreturn_t action_ret); diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c index 72a93086216b..12f3e72449eb 100644 --- a/kernel/irq/chip.c +++ b/kernel/irq/chip.c @@ -850,3 +850,20 @@ void irq_cpu_offline(void) raw_spin_unlock_irqrestore(&desc->lock, flags); } } + +#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY +void irq_chip_ack_parent(struct irq_data *data) +{ + data = data->parent_data; + data->chip->irq_ack(data); +} + +int irq_chip_retrigger_hierarchy(struct irq_data *data) +{ + for (data = data->parent_data; data; data = data->parent_data) + if (data->chip && data->chip->irq_retrigger) + return data->chip->irq_retrigger(data); + + return -ENOSYS; +} +#endif -- 1.7.10.4