diff options
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/typec/mux/intel_pmc_mux.c | 68 |
1 files changed, 35 insertions, 33 deletions
diff --git a/drivers/usb/typec/mux/intel_pmc_mux.c b/drivers/usb/typec/mux/intel_pmc_mux.c index 1a575858a36f..a6426a076d5a 100644 --- a/drivers/usb/typec/mux/intel_pmc_mux.c +++ b/drivers/usb/typec/mux/intel_pmc_mux.c @@ -224,9 +224,6 @@ pmc_usb_mux_dp(struct pmc_usb_port *port, struct typec_mux_state *state) return pmc_usb_mux_dp_hpd(port, state->data); } - if (data->status & DP_STATUS_IRQ_HPD) - return pmc_usb_mux_dp_hpd(port, state->data); - req.usage = PMC_USB_ALT_MODE; req.usage |= port->usb3_port << PMC_USB_MSG_USB3_PORT_SHIFT; req.mode_type = PMC_USB_MODE_TYPE_DP << PMC_USB_MODE_TYPE_SHIFT; @@ -345,39 +342,52 @@ static int pmc_usb_mux_safe_state(struct pmc_usb_port *port) return pmc_usb_command(port, &msg, sizeof(msg)); } -static int pmc_usb_connect(struct pmc_usb_port *port) +static int pmc_usb_disconnect(struct pmc_usb_port *port) { + struct typec_displayport_data data = { }; u8 msg[2]; - if (port->iom_status & IOM_PORT_STATUS_CONNECTED) + if (!(port->iom_status & IOM_PORT_STATUS_CONNECTED)) return 0; - msg[0] = PMC_USB_CONNECT; + /* Clear DisplayPort HPD if it's still asserted. */ + if (IOM_PORT_HPD_ASSERTED(port->iom_status)) + pmc_usb_mux_dp_hpd(port, &data); + + msg[0] = PMC_USB_DISCONNECT; msg[0] |= port->usb3_port << PMC_USB_MSG_USB3_PORT_SHIFT; msg[1] = port->usb2_port << PMC_USB_MSG_USB2_PORT_SHIFT; - msg[1] |= hsl_orientation(port) << PMC_USB_MSG_ORI_HSL_SHIFT; - msg[1] |= sbu_orientation(port) << PMC_USB_MSG_ORI_AUX_SHIFT; return pmc_usb_command(port, msg, sizeof(msg)); } -static int pmc_usb_disconnect(struct pmc_usb_port *port) +static int pmc_usb_connect(struct pmc_usb_port *port, enum usb_role role) { - struct typec_displayport_data data = { }; + u8 ufp = role == USB_ROLE_DEVICE ? 1 : 0; u8 msg[2]; + int ret; - if (!(port->iom_status & IOM_PORT_STATUS_CONNECTED)) - return 0; + if (port->orientation == TYPEC_ORIENTATION_NONE) + return -EINVAL; - /* Clear DisplayPort HPD if it's still asserted. */ - if (IOM_PORT_HPD_ASSERTED(port->iom_status)) - pmc_usb_mux_dp_hpd(port, &data); + if (port->iom_status & IOM_PORT_STATUS_CONNECTED) { + if (port->role == role || port->role == USB_ROLE_NONE) + return 0; - msg[0] = PMC_USB_DISCONNECT; + /* Role swap */ + ret = pmc_usb_disconnect(port); + if (ret) + return ret; + } + + msg[0] = PMC_USB_CONNECT; msg[0] |= port->usb3_port << PMC_USB_MSG_USB3_PORT_SHIFT; msg[1] = port->usb2_port << PMC_USB_MSG_USB2_PORT_SHIFT; + msg[1] |= ufp << PMC_USB_MSG_UFP_SHIFT; + msg[1] |= hsl_orientation(port) << PMC_USB_MSG_ORI_HSL_SHIFT; + msg[1] |= sbu_orientation(port) << PMC_USB_MSG_ORI_AUX_SHIFT; return pmc_usb_command(port, msg, sizeof(msg)); } @@ -395,7 +405,7 @@ pmc_usb_mux_set(struct typec_mux *mux, struct typec_mux_state *state) if (state->mode == TYPEC_STATE_SAFE) return pmc_usb_mux_safe_state(port); if (state->mode == TYPEC_STATE_USB) - return pmc_usb_connect(port); + return pmc_usb_connect(port, port->role); if (state->alt) { switch (state->alt->svid) { @@ -410,7 +420,7 @@ pmc_usb_mux_set(struct typec_mux *mux, struct typec_mux_state *state) /* REVISIT: Try with usb3_port set to 0? */ break; case TYPEC_MODE_USB3: - return pmc_usb_connect(port); + return pmc_usb_connect(port, port->role); case TYPEC_MODE_USB4: return pmc_usb_mux_usb4(port, state); } @@ -428,32 +438,24 @@ static int pmc_usb_set_orientation(struct typec_switch *sw, port->orientation = orientation; - if (port->role) { - if (orientation == TYPEC_ORIENTATION_NONE) - return pmc_usb_disconnect(port); - else - return pmc_usb_connect(port); - } - return 0; } static int pmc_usb_set_role(struct usb_role_switch *sw, enum usb_role role) { struct pmc_usb_port *port = usb_role_switch_get_drvdata(sw); + int ret; update_port_status(port); - port->role = role; + if (role == USB_ROLE_NONE) + ret = pmc_usb_disconnect(port); + else + ret = pmc_usb_connect(port, role); - if (port->orientation) { - if (role == USB_ROLE_NONE) - return pmc_usb_disconnect(port); - else - return pmc_usb_connect(port); - } + port->role = role; - return 0; + return ret; } static int pmc_usb_register_port(struct pmc_usb *pmc, int index, |