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Commit 05f8b35a authored by Peter Chen's avatar Peter Chen Committed by Greg Kroah-Hartman
Browse files

usb: common: add API to get if the platform supports TPL 



The TPL (Targeted Peripheral List) is used for targeted hosts
(non-PC hosts), and it can be used at USB OTG & EH certification
and some specific products which need white list.

Signed-off-by: default avatarPeter Chen <peter.chen@freescale.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 9bd0181c

drivers/usb/common/usb-common.c

+15 −0
Original line number Diff line number Diff line
@@ -139,6 +139,21 @@ enum usb_device_speed of_usb_get_maximum_speed(struct device_node *np) 
}

EXPORT_SYMBOL_GPL(of_usb_get_maximum_speed);



/**

 * of_usb_host_tpl_support - to get if Targeted Peripheral List is supported

 * for given targeted hosts (non-PC hosts)

 * @np: Pointer to the given device_node

 *

 * The function gets if the targeted hosts support TPL or not

 */

bool of_usb_host_tpl_support(struct device_node *np)

{

	if (of_find_property(np, "tpl-support", NULL))

		return true;



	return false;

}

EXPORT_SYMBOL_GPL(of_usb_host_tpl_support);

#endif



MODULE_LICENSE("GPL");

include/linux/usb/of.h

+5 −0
Original line number Diff line number Diff line
@@ -14,6 +14,7 @@ 
#if IS_ENABLED(CONFIG_OF)

enum usb_dr_mode of_usb_get_dr_mode(struct device_node *np);

enum usb_device_speed of_usb_get_maximum_speed(struct device_node *np);

bool of_usb_host_tpl_support(struct device_node *np);

#else

static inline enum usb_dr_mode of_usb_get_dr_mode(struct device_node *np)

{
@@ -25,6 +26,10 @@ of_usb_get_maximum_speed(struct device_node *np) 
{

	return USB_SPEED_UNKNOWN;

}

static inline bool of_usb_host_tpl_support(struct device_node *np)

{

	return false;

}

#endif



#if IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_USB_SUPPORT)