diff options
| author | Peter Chen <peter.chen@nxp.com> | 2020-02-17 09:26:43 +0800 |
|---|---|---|
| committer | Peter Chen <peter.chen@nxp.com> | 2020-07-28 14:06:59 +0800 |
| commit | 62b9825827518843f0f93dec6730ddcde14eb5b2 (patch) | |
| tree | a0310c351b016268a29b0e60fd57eb82d7b21925 /drivers/usb | |
| parent | c71d13f9a868e2ea4d31284bc7975c7ec145167f (diff) | |
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 <peter.chen@nxp.com>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/chipidea/core.c | 27 |
1 files changed, 27 insertions, 0 deletions
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); |