5.4-stable review patch. If anyone has any objections, please let me know.
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From: Xu Yang xu.yang_2@nxp.com
[ Upstream commit b7a62611fab72e585c729a7fcf666aa9c4144214 ]
Add USB PHY event for below situation: - usb role changed - vbus connect - vbus disconnect - gadget driver is enumerated
USB PHY driver can get the last event after above situation occurs and deal with different situations.
Signed-off-by: Xu Yang xu.yang_2@nxp.com Acked-by: Peter Chen peter.chen@kernel.org Link: https://lore.kernel.org/r/20230627110353.1879477-1-xu.yang_2@nxp.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/usb/chipidea/ci.h | 18 ++++++++++++++++-- drivers/usb/chipidea/udc.c | 10 ++++++++++ 2 files changed, 26 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/chipidea/ci.h b/drivers/usb/chipidea/ci.h index ff61f88fc867..3a22bc727bb9 100644 --- a/drivers/usb/chipidea/ci.h +++ b/drivers/usb/chipidea/ci.h @@ -277,8 +277,19 @@ static inline int ci_role_start(struct ci_hdrc *ci, enum ci_role role) return -ENXIO;
ret = ci->roles[role]->start(ci); - if (!ret) - ci->role = role; + if (ret) + return ret; + + ci->role = role; + + if (ci->usb_phy) { + if (role == CI_ROLE_HOST) + usb_phy_set_event(ci->usb_phy, USB_EVENT_ID); + else + /* in device mode but vbus is invalid*/ + usb_phy_set_event(ci->usb_phy, USB_EVENT_NONE); + } + return ret; }
@@ -292,6 +303,9 @@ static inline void ci_role_stop(struct ci_hdrc *ci) ci->role = CI_ROLE_END;
ci->roles[role]->stop(ci); + + if (ci->usb_phy) + usb_phy_set_event(ci->usb_phy, USB_EVENT_NONE); }
static inline enum usb_role ci_role_to_usb_role(struct ci_hdrc *ci) diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c index dfae454ca9ba..19a9a4b83346 100644 --- a/drivers/usb/chipidea/udc.c +++ b/drivers/usb/chipidea/udc.c @@ -1583,6 +1583,13 @@ static int ci_udc_vbus_session(struct usb_gadget *_gadget, int is_active) ret = ci->platdata->notify_event(ci, CI_HDRC_CONTROLLER_VBUS_EVENT);
+ if (ci->usb_phy) { + if (is_active) + usb_phy_set_event(ci->usb_phy, USB_EVENT_VBUS); + else + usb_phy_set_event(ci->usb_phy, USB_EVENT_NONE); + } + if (ci->driver) ci_hdrc_gadget_connect(_gadget, is_active);
@@ -1898,6 +1905,9 @@ static irqreturn_t udc_irq(struct ci_hdrc *ci) if (USBi_PCI & intr) { ci->gadget.speed = hw_port_is_high_speed(ci) ? USB_SPEED_HIGH : USB_SPEED_FULL; + if (ci->usb_phy) + usb_phy_set_event(ci->usb_phy, + USB_EVENT_ENUMERATED); if (ci->suspended) { if (ci->driver->resume) { spin_unlock(&ci->lock);