From 62b9825827518843f0f93dec6730ddcde14eb5b2 Mon Sep 17 00:00:00 2001 From: Peter Chen Date: Mon, 17 Feb 2020 09:26:43 +0800 Subject: usb: chipidea: add query_available_role interface The glue layer may need to know current available role to do some setting, eg, the wakeup setting. So we add ci_hdrc_query_available_role for that. Signed-off-by: Peter Chen --- drivers/usb/chipidea/core.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) (limited to 'drivers/usb/chipidea/core.c') diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c index 9a7c53d09ab4..87ae3c8686a7 100644 --- a/drivers/usb/chipidea/core.c +++ b/drivers/usb/chipidea/core.c @@ -877,6 +877,33 @@ void ci_hdrc_remove_device(struct platform_device *pdev) } EXPORT_SYMBOL_GPL(ci_hdrc_remove_device); +/** + * ci_hdrc_query_available_role: get runtime available operation mode + * + * The glue layer can get current operation mode (host/peripheral/otg) + * This function should be called after ci core device has created. + * + * @pdev: the platform device of ci core. + * + * Return runtime usb_dr_mode. + */ +enum usb_dr_mode ci_hdrc_query_available_role(struct platform_device *pdev) +{ + struct ci_hdrc *ci = platform_get_drvdata(pdev); + + if (!ci) + return USB_DR_MODE_UNKNOWN; + if (ci->roles[CI_ROLE_HOST] && ci->roles[CI_ROLE_GADGET]) + return USB_DR_MODE_OTG; + else if (ci->roles[CI_ROLE_HOST]) + return USB_DR_MODE_HOST; + else if (ci->roles[CI_ROLE_GADGET]) + return USB_DR_MODE_PERIPHERAL; + else + return USB_DR_MODE_UNKNOWN; +} +EXPORT_SYMBOL_GPL(ci_hdrc_query_available_role); + static inline void ci_role_destroy(struct ci_hdrc *ci) { ci_hdrc_gadget_destroy(ci); -- cgit v1.2.3-59-g8ed1b