Commit-ID: 51b05f6b8a7dfa2c85988e506d3107144a13b975
Gitweb: http://git.kernel.org/tip/51b05f6b8a7dfa2c85988e506d3107144a13b975
Author: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
AuthorDate: Wed, 18 Mar 2015 19:55:56 +0100
Committer: Jason Cooper <jason@xxxxxxxxxxxxxx>
CommitDate: Mon, 23 Mar 2015 09:34:43 +0000
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: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Reviewed-by: Simon Horman <horms+renesas@xxxxxxxxxxxx>
Link: https://lkml.kernel.org/r/1426704961-27322-3-git-send-email-geert+renesas@xxxxxxxxx
Signed-off-by: Jason Cooper <jason@xxxxxxxxxxxxxx>
---
drivers/irqchip/irq-renesas-irqc.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/irqchip/irq-renesas-irqc.c b/drivers/irqchip/irq-renesas-irqc.c
index 44fe04a..2fe9612 100644
--- a/drivers/irqchip/irq-renesas-irqc.c
+++ b/drivers/irqchip/irq-renesas-irqc.c
@@ -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;
}
--
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