diff options
| author | Peter Chen <peter.chen@freescale.com> | 2014-01-03 13:42:56 +0800 |
|---|---|---|
| committer | Jason Liu <jason.hui.liu@nxp.com> | 2019-02-12 10:21:35 +0800 |
| commit | 7241e3a9a55af88c6261045f0d80d2fc09093a64 (patch) | |
| tree | 7efdf58282acddb6b23acb9b1c8b8237c7d5d4d6 /drivers/usb/chipidea/core.c | |
| parent | 233f37db41b01b0f827b91422711642228371615 (diff) | |
MLK-11340-37 usb: chipidea: add query_available_role interface
The glue layer may need to know current available role, add
ci_hdrc_query_available_role for that.
Signed-off-by: Peter Chen <peter.chen@freescale.com>
(cherry picked from commit 5c340402131ca6eacaeb122deb1ee59bcea2778c)
Diffstat (limited to 'drivers/usb/chipidea/core.c')
| -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 bea58d9d4cf0..8e335191ae94 100644 --- a/drivers/usb/chipidea/core.c +++ b/drivers/usb/chipidea/core.c @@ -814,6 +814,33 @@ 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 USB_DR_MODE_XXX. + */ +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); |