gpio: rcar: Add minimal runtime PM support
authorGeert Uytterhoeven <geert+renesas@glider.be>
Mon, 14 Apr 2014 18:33:13 +0000 (20:33 +0200)
committerLinus Walleij <linus.walleij@linaro.org>
Mon, 28 Apr 2014 19:35:10 +0000 (12:35 -0700)
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>
drivers/gpio/gpio-rcar.c

index 03c9148..bfcfeee 100644 (file)
@@ -26,6 +26,7 @@
 #include <linux/pinctrl/consumer.h>
 #include <linux/platform_data/gpio-rcar.h>
 #include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
 #include <linux/spinlock.h>
 #include <linux/slab.h>
 
@@ -377,6 +378,9 @@ static int gpio_rcar_probe(struct platform_device *pdev)
 
        platform_set_drvdata(pdev, p);
 
+       pm_runtime_enable(dev);
+       pm_runtime_get_sync(dev);
+
        io = platform_get_resource(pdev, IORESOURCE_MEM, 0);
        irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
 
@@ -460,6 +464,8 @@ static int gpio_rcar_probe(struct platform_device *pdev)
 err1:
        irq_domain_remove(p->irq_domain);
 err0:
+       pm_runtime_put(dev);
+       pm_runtime_disable(dev);
        return ret;
 }
 
@@ -473,6 +479,8 @@ static int gpio_rcar_remove(struct platform_device *pdev)
                return ret;
 
        irq_domain_remove(p->irq_domain);
+       pm_runtime_put(&pdev->dev);
+       pm_runtime_disable(&pdev->dev);
        return 0;
 }