diff options
| author | Peter Chen <peter.chen@freescale.com> | 2014-01-03 13:42:56 +0800 |
|---|---|---|
| committer | Li Jun <jun.li@freescale.com> | 2015-01-28 11:08:36 +0800 |
| commit | dc31f1499797ff7b6d825c4a2871dfa39e2c2194 (patch) | |
| tree | b118816ad43a4775661c3ed76e3ddbf2f061c30c | |
| parent | c5694e27b7dddc49319a8c8555059a7c7b9f3fe2 (diff) | |
ENGR00292408-1 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)
| -rw-r--r-- | drivers/usb/chipidea/core.c | 27 | ||||
| -rw-r--r-- | include/linux/usb/chipidea.h | 2 |
2 files changed, 29 insertions, 0 deletions
diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c index c780b5b54400..bcc111a5dfe4 100644 --- a/drivers/usb/chipidea/core.c +++ b/drivers/usb/chipidea/core.c @@ -687,6 +687,33 @@ 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); diff --git a/include/linux/usb/chipidea.h b/include/linux/usb/chipidea.h index f5440426c73a..6c1acb4b69f6 100644 --- a/include/linux/usb/chipidea.h +++ b/include/linux/usb/chipidea.h @@ -60,4 +60,6 @@ struct platform_device *ci_hdrc_add_device(struct device *dev, /* Remove ci hdrc device */ void ci_hdrc_remove_device(struct platform_device *pdev); +/* Get current available role */ +enum usb_dr_mode ci_hdrc_query_available_role(struct platform_device *pdev); #endif |