irqchip: irqc: Add runtime PM support

This was tested using the SMSC LAN on the APE6EVM board.

Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

diff --git a/drivers/irqchip/irq-renesas-irqc.c b/drivers/irqchip/irq-renesas-irqc.c
index 927bff373aac5ace3bebf2e91b3dfd7e44a9b6d4..649cd69a51f450123e4d8819fc5fec72622a241a 100644 (file)
--- a/drivers/irqchip/irq-renesas-irqc.c
+++ b/drivers/irqchip/irq-renesas-irqc.c
@@ -19,6 +19,7 @@
 
 #include <linux/init.h>
 #include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
 #include <linux/spinlock.h>
 #include <linux/interrupt.h>
 #include <linux/ioport.h>
@@ -181,6 +182,9 @@ static int irqc_probe(struct platform_device *pdev)
                goto err1;
        }
 
+       pm_runtime_enable(&pdev->dev);
+       pm_runtime_get_sync(&pdev->dev);
+
        /* allow any number of IRQs between 1 and IRQC_IRQ_MAX */
        for (k = 0; k < IRQC_IRQ_MAX; k++) {
                irq = platform_get_resource(pdev, IORESOURCE_IRQ, k);
@@ -255,6 +259,8 @@ err3:
 err2:
        iounmap(p->iomem);
 err1:
+       pm_runtime_put_sync(&pdev->dev);
+       pm_runtime_disable(&pdev->dev);
        kfree(p);
 err0:
        return ret;
@@ -270,6 +276,8 @@ static int irqc_remove(struct platform_device *pdev)
 
        irq_domain_remove(p->irq_domain);
        iounmap(p->iomem);
+       pm_runtime_put_sync(&pdev->dev);
+       pm_runtime_disable(&pdev->dev);
        kfree(p);
        return 0;
 }