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authorTony Lindgren2017-05-25 09:13:31 -0700
committerGreg Kroah-Hartman2017-06-03 18:08:04 +0900
commit0aa0b93e7af663b6ca9d9ae31d1b73f2c36ddf46 (patch)
treea0aca8a85020d84a58722b6cdbe66600e2eb3f6c /drivers/usb
parentfa72e6afa795dbb35d0cc6332606e83e4415e45e (diff)
usb: host: ohci-platform: Add basic runtime PM support
This is needed in preparation of adding support for omap3 and later OHCI. The runtime PM will only do something on platforms that implement it. Cc: devicetree@vger.kernel.org Cc: Hans de Goede <hdegoede@redhat.com> Cc: Rob Herring <robh@kernel.org> Cc: Sebastian Reichel <sebastian.reichel@collabora.co.uk> Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Acked-by: Roger Quadros <rogerq@ti.com> Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb')
-rw-r--r--drivers/usb/host/ohci-platform.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/usb/host/ohci-platform.c b/drivers/usb/host/ohci-platform.c
index 6368fce43197..589177dca8ca 100644
--- a/drivers/usb/host/ohci-platform.c
+++ b/drivers/usb/host/ohci-platform.c
@@ -24,6 +24,7 @@
#include <linux/err.h>
#include <linux/phy/phy.h>
#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
#include <linux/reset.h>
#include <linux/usb/ohci_pdriver.h>
#include <linux/usb.h>
@@ -242,6 +243,8 @@ static int ohci_platform_probe(struct platform_device *dev)
}
#endif
+ pm_runtime_set_active(&dev->dev);
+ pm_runtime_enable(&dev->dev);
if (pdata->power_on) {
err = pdata->power_on(dev);
if (err < 0)
@@ -271,6 +274,7 @@ err_power:
if (pdata->power_off)
pdata->power_off(dev);
err_reset:
+ pm_runtime_disable(&dev->dev);
while (--rst >= 0)
reset_control_assert(priv->resets[rst]);
err_put_clks:
@@ -292,6 +296,7 @@ static int ohci_platform_remove(struct platform_device *dev)
struct ohci_platform_priv *priv = hcd_to_ohci_priv(hcd);
int clk, rst;
+ pm_runtime_get_sync(&dev->dev);
usb_remove_hcd(hcd);
if (pdata->power_off)
@@ -305,6 +310,9 @@ static int ohci_platform_remove(struct platform_device *dev)
usb_put_hcd(hcd);
+ pm_runtime_put_sync(&dev->dev);
+ pm_runtime_disable(&dev->dev);
+
if (pdata == &ohci_platform_defaults)
dev->dev.platform_data = NULL;