gpio: rcar: Add minimal runtime PM support
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>
diff --git a/drivers/gpio/gpio-rcar.c b/drivers/gpio/gpio-rcar.c
index 03c9148..bfcfeee 100644
--- a/drivers/gpio/gpio-rcar.c
+++ b/drivers/gpio/gpio-rcar.c
@@ -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 @@
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 @@
err1:
irq_domain_remove(p->irq_domain);
err0:
+ pm_runtime_put(dev);
+ pm_runtime_disable(dev);
return ret;
}
@@ -473,6 +479,8 @@
return ret;
irq_domain_remove(p->irq_domain);
+ pm_runtime_put(&pdev->dev);
+ pm_runtime_disable(&pdev->dev);
return 0;
}