linux-kernel - [PATCH 03/03] gpio: em: Use lazy disable and mask on suspend

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Date:	Thu, 14 Nov 2013 07:59:55 +0900
From:	Magnus Damm <magnus.damm@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	linux-sh@...r.kernel.org, linus.walleij@...aro.org,
	grant.likely@...retlab.ca, horms@...ge.net.au,
	laurent.pinchart@...asonboard.com,
	Magnus Damm <magnus.damm@...il.com>
Subject: [PATCH 03/03] gpio: em: Use lazy disable and mask on suspend

From: Magnus Damm <damm@...nsource.se>

Set the ->irq_enable() and ->irq_disable() methods to NULL
to enable lazy disable of interrupts. Also extend the code
to set IRQCHIP_MASK_ON_SUSPEND which tells the core that
only IRQs marked as wakeups need to stay enabled during
Suspend-to-RAM.

Tested on the KZM9D board with GPIO-keys.

Signed-off-by: Magnus Damm <damm@...nsource.se>
---

 drivers/gpio/gpio-em.c |    4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

--- 0006/drivers/gpio/gpio-em.c
+++ work/drivers/gpio/gpio-em.c	2013-11-13 22:18:21.000000000 +0900
@@ -336,10 +336,8 @@ static int em_gio_probe(struct platform_
 	irq_chip->name = name;
 	irq_chip->irq_mask = em_gio_irq_disable;
 	irq_chip->irq_unmask = em_gio_irq_enable;
-	irq_chip->irq_enable = em_gio_irq_enable;
-	irq_chip->irq_disable = em_gio_irq_disable;
 	irq_chip->irq_set_type = em_gio_irq_set_type;
-	irq_chip->flags	= IRQCHIP_SKIP_SET_WAKE;
+	irq_chip->flags	= IRQCHIP_SKIP_SET_WAKE | IRQCHIP_MASK_ON_SUSPEND;
 
 	p->irq_domain = irq_domain_add_simple(pdev->dev.of_node,
 					      pdata->number_of_pins,
--
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