--- a/drivers/usb/chipidea/ci.h +++ b/drivers/usb/chipidea/ci.h @@ -205,6 +205,7 @@ struct hw_bank { * @in_lpm: if the core in low power mode * @wakeup_int: if wakeup interrupt occur * @rev: The revision number for controller + * @dp_always_pullup: keep dp always pullup at device mode */ struct ci_hdrc { struct device *dev; @@ -259,6 +260,7 @@ struct ci_hdrc { bool in_lpm; bool wakeup_int; enum ci_revision rev; + bool dp_always_pullup; }; static inline struct ci_role_driver *ci_role(struct ci_hdrc *ci) --- a/drivers/usb/chipidea/core.c +++ b/drivers/usb/chipidea/core.c @@ -818,7 +818,7 @@ static inline void ci_role_destroy(struc { ci_hdrc_gadget_destroy(ci); ci_hdrc_host_destroy(ci); - if (ci->is_otg && ci->roles[CI_ROLE_GADGET]) + if (!ci->dp_always_pullup && ci->roles[CI_ROLE_GADGET]) ci_hdrc_otg_destroy(ci); } @@ -923,6 +923,9 @@ static int ci_hdrc_probe(struct platform CI_HDRC_SUPPORTS_RUNTIME_PM); platform_set_drvdata(pdev, ci); + ci->dp_always_pullup = !!(ci->platdata->flags & + CI_HDRC_DP_ALWAYS_PULLUP); + ret = hw_device_init(ci, base); if (ret < 0) { dev_err(dev, "can't initialize hardware\n"); @@ -1011,7 +1014,7 @@ static int ci_hdrc_probe(struct platform goto deinit_gadget; } - if (ci->is_otg && ci->roles[CI_ROLE_GADGET]) { + if (!ci->dp_always_pullup && ci->roles[CI_ROLE_GADGET]) { ret = ci_hdrc_otg_init(ci); if (ret) { dev_err(dev, "init otg fails, ret = %d\n", ret); --- a/drivers/usb/chipidea/otg.c +++ b/drivers/usb/chipidea/otg.c @@ -131,8 +131,10 @@ enum ci_role ci_otg_role(struct ci_hdrc void ci_handle_vbus_change(struct ci_hdrc *ci) { - if (!ci->is_otg) + if (ci->dp_always_pullup) { + usb_gadget_vbus_connect(&ci->gadget); return; + } if (hw_read_otgsc(ci, OTGSC_BSV) && !ci->vbus_active) usb_gadget_vbus_connect(&ci->gadget); --- a/include/linux/usb/chipidea.h +++ b/include/linux/usb/chipidea.h @@ -60,6 +60,7 @@ struct ci_hdrc_platform_data { #define CI_HDRC_OVERRIDE_RX_BURST BIT(11) #define CI_HDRC_OVERRIDE_PHY_CONTROL BIT(12) /* Glue layer manages phy */ #define CI_HDRC_REQUIRES_ALIGNED_DMA BIT(13) +#define CI_HDRC_DP_ALWAYS_PULLUP BIT(14) enum usb_dr_mode dr_mode; #define CI_HDRC_CONTROLLER_RESET_EVENT 0 #define CI_HDRC_CONTROLLER_STOPPED_EVENT 1