diff options
| author | Ajay Gupta <ajayg@nvidia.com> | 2020-02-17 17:49:11 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-02-17 16:50:18 +0100 |
| commit | c2ae49285a7b21ae1f44ee0c44a5f5af0e2048dd (patch) | |
| tree | 96d2e3fda61d1ef78b0aa1ace62104377172e52a /drivers/usb/typec/ucsi | |
| parent | 055b185a3326cf18f5ee27f0ad251e76cccbd6cf (diff) | |
usb: typec: ucsi: register DP only for NVIDIA DP VDO
NVIDIA VirtualLink (svid 0x955) has two altmode, vdo=0x1 for
VirtualLink DP mode and vdo=0x3 for NVIDIA test mode.
Register display altmode driver only for vdo=0x1
Signed-off-by: Ajay Gupta <ajayg@nvidia.com>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20200217144913.55330-2-heikki.krogerus@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/typec/ucsi')
| -rw-r--r-- | drivers/usb/typec/ucsi/ucsi.c | 12 | ||||
| -rw-r--r-- | drivers/usb/typec/ucsi/ucsi.h | 7 |
2 files changed, 17 insertions, 2 deletions
diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c index b1b72cb7af10..ddf2ad3752de 100644 --- a/drivers/usb/typec/ucsi/ucsi.c +++ b/drivers/usb/typec/ucsi/ucsi.c @@ -270,9 +270,16 @@ static int ucsi_register_altmode(struct ucsi_connector *con, switch (desc->svid) { case USB_TYPEC_DP_SID: - case USB_TYPEC_NVIDIA_VLINK_SID: alt = ucsi_register_displayport(con, override, i, desc); break; + case USB_TYPEC_NVIDIA_VLINK_SID: + if (desc->vdo == USB_TYPEC_NVIDIA_VLINK_DBG_VDO) + alt = typec_port_register_altmode(con->port, + desc); + else + alt = ucsi_register_displayport(con, override, + i, desc); + break; default: alt = typec_port_register_altmode(con->port, desc); break; @@ -475,7 +482,8 @@ static void ucsi_unregister_altmodes(struct ucsi_connector *con, u8 recipient) while (adev[i]) { if (recipient == UCSI_RECIPIENT_SOP && (adev[i]->svid == USB_TYPEC_DP_SID || - adev[i]->svid == USB_TYPEC_NVIDIA_VLINK_SID)) { + (adev[i]->svid == USB_TYPEC_NVIDIA_VLINK_SID && + adev[i]->vdo != USB_TYPEC_NVIDIA_VLINK_DBG_VDO))) { pdev = typec_altmode_get_partner(adev[i]); ucsi_displayport_remove_partner((void *)pdev); } diff --git a/drivers/usb/typec/ucsi/ucsi.h b/drivers/usb/typec/ucsi/ucsi.h index e434b9c9a9eb..a89112b69cd5 100644 --- a/drivers/usb/typec/ucsi/ucsi.h +++ b/drivers/usb/typec/ucsi/ucsi.h @@ -340,4 +340,11 @@ static inline void ucsi_displayport_remove_partner(struct typec_altmode *adev) { } #endif /* CONFIG_TYPEC_DP_ALTMODE */ +/* + * NVIDIA VirtualLink (svid 0x955) has two altmode. VirtualLink + * DP mode with vdo=0x1 and NVIDIA test mode with vdo=0x3 + */ +#define USB_TYPEC_NVIDIA_VLINK_DP_VDO 0x1 +#define USB_TYPEC_NVIDIA_VLINK_DBG_VDO 0x3 + #endif /* __DRIVER_USB_TYPEC_UCSI_H */ |