Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 0aa0b93e authored by Tony Lindgren's avatar Tony Lindgren Committed by Greg Kroah-Hartman
Browse files

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: default avatarTony Lindgren <tony@atomide.com>
Acked-by: default avatarRoger Quadros <rogerq@ti.com>
Acked-by: default avatarAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent fa72e6af

drivers/usb/host/ohci-platform.c

+8 −0
Original line number Diff line number Diff line
@@ -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 @@ static int ohci_platform_probe(struct platform_device *dev) 
	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;