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gpio: rcar: Add minimal runtime PM support

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This is just enough to automatically enable the functional clock, if
present. Clock management during suspend/resume is still to be added.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: linux-gpio@vger.kernel.org
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Geert Uytterhoeven 2014-04-14 20:33:13 +02:00 committed by Linus Walleij
parent 9288ecad75
commit df0c6c8023
1 changed files with 8 additions and 0 deletions
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8
drivers/gpio/gpio-rcar.c
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@ -26,6 +26,7 @@
#include <linux/pinctrl/consumer.h> #include <linux/pinctrl/consumer.h>
#include <linux/platform_data/gpio-rcar.h> #include <linux/platform_data/gpio-rcar.h>
#include <linux/platform_device.h> #include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/spinlock.h> #include <linux/spinlock.h>
#include <linux/slab.h> #include <linux/slab.h>
@ -377,6 +378,9 @@ static int gpio_rcar_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, p); platform_set_drvdata(pdev, p);
pm_runtime_enable(dev);
pm_runtime_get_sync(dev);
io = platform_get_resource(pdev, IORESOURCE_MEM, 0); io = platform_get_resource(pdev, IORESOURCE_MEM, 0);
irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0); irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
@ -460,6 +464,8 @@ static int gpio_rcar_probe(struct platform_device *pdev)
err1: err1:
irq_domain_remove(p->irq_domain); irq_domain_remove(p->irq_domain);
err0: err0:
pm_runtime_put(dev);
pm_runtime_disable(dev);
return ret; return ret;
} }
@ -473,6 +479,8 @@ static int gpio_rcar_remove(struct platform_device *pdev)
return ret; return ret;
irq_domain_remove(p->irq_domain); irq_domain_remove(p->irq_domain);
pm_runtime_put(&pdev->dev);
pm_runtime_disable(&pdev->dev);
return 0; return 0;
} }