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Commit 51b05f6b authored by Geert Uytterhoeven's avatar Geert Uytterhoeven Committed by Jason Cooper
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irqchip: renesas-irqc: Add minimal runtime PM support 



This is just enough to let pm_clk_*() enable the functional clock, and
manage it for suspend/resume, if present.
Before, it was assumed enabled by the bootloader or reset state.

Signed-off-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: default avatarSimon Horman <horms+renesas@verge.net.au>
Link: https://lkml.kernel.org/r/1426704961-27322-3-git-send-email-geert+renesas@glider.be


Signed-off-by: default avatarJason Cooper <jason@lakedaemon.net>
parent 1cd5ec73

drivers/irqchip/irq-renesas-irqc.c

+8 −0
Original line number Diff line number Diff line
@@ -29,6 +29,7 @@ 
#include <linux/slab.h>

#include <linux/module.h>

#include <linux/platform_data/irq-renesas-irqc.h>

#include <linux/pm_runtime.h>



#define IRQC_IRQ_MAX	32	/* maximum 32 interrupts per driver instance */
@@ -180,6 +181,9 @@ static int irqc_probe(struct platform_device *pdev) 
	p->pdev = pdev;

	platform_set_drvdata(pdev, p);



	pm_runtime_enable(&pdev->dev);

	pm_runtime_get_sync(&pdev->dev);



	/* get hold of manadatory IOMEM */

	io = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	if (!io) {
@@ -260,6 +264,8 @@ err3: 
err2:

	iounmap(p->iomem);

err1:

	pm_runtime_put(&pdev->dev);

	pm_runtime_disable(&pdev->dev);

	kfree(p);

err0:

	return ret;
@@ -275,6 +281,8 @@ static int irqc_remove(struct platform_device *pdev) 


	irq_domain_remove(p->irq_domain);

	iounmap(p->iomem);

	pm_runtime_put(&pdev->dev);

	pm_runtime_disable(&pdev->dev);

	kfree(p);

	return 0;

}