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platform/chrome: cros_ec_typec: Configure Retimer cable type

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Connector class driver only configure cable type active or passive.
Configure if the cable type is retimer or redriver with this change.
This detail will be provided as a part of cable discover mode VDO.

Signed-off-by: Utkarsh Patel <utkarsh.h.patel@intel.com>
Acked-by: Prashant Malani <pmalani@chromium.org>
Link: https://lore.kernel.org/r/20230718024703.1013367-2-utkarsh.h.patel@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Utkarsh Patel 2023-07-17 19:47:02 -07:00 committed by Greg Kroah-Hartman
parent 78e0ea4277
commit aad6ad1b78
1 changed files with 27 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
drivers/platform/chrome/cros_ec_typec.c
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@ -406,6 +406,27 @@ static int cros_typec_usb_safe_state(struct cros_typec_port *port)
return ret; return ret;
} }
/**
* cros_typec_get_cable_vdo() - Get Cable VDO of the connected cable
* @port: Type-C port data
* @svid: Standard or Vendor ID to match
*
* Returns the Cable VDO if match is found and returns 0 if match is not found.
*/
static int cros_typec_get_cable_vdo(struct cros_typec_port *port, u16 svid)
{
struct list_head *head = &port->plug_mode_list;
struct cros_typec_altmode_node *node;
u32 ret = 0;
list_for_each_entry(node, head, list) {
if (node->amode->svid == svid)
return node->amode->vdo;
}
return ret;
}
/* /*
* Spoof the VDOs that were likely communicated by the partner for TBT alt * Spoof the VDOs that were likely communicated by the partner for TBT alt
* mode. * mode.
@ -432,6 +453,9 @@ static int cros_typec_enable_tbt(struct cros_typec_data *typec,
/* Cable Discover Mode VDO */ /* Cable Discover Mode VDO */
data.cable_mode = TBT_MODE; data.cable_mode = TBT_MODE;
data.cable_mode |= cros_typec_get_cable_vdo(port, USB_TYPEC_TBT_SID);
data.cable_mode |= TBT_SET_CABLE_SPEED(pd_ctrl->cable_speed); data.cable_mode |= TBT_SET_CABLE_SPEED(pd_ctrl->cable_speed);
if (pd_ctrl->control_flags & USB_PD_CTRL_OPTICAL_CABLE) if (pd_ctrl->control_flags & USB_PD_CTRL_OPTICAL_CABLE)
@ -522,8 +546,10 @@ static int cros_typec_enable_usb4(struct cros_typec_data *typec,
/* Cable Type */ /* Cable Type */
if (pd_ctrl->control_flags & USB_PD_CTRL_OPTICAL_CABLE) if (pd_ctrl->control_flags & USB_PD_CTRL_OPTICAL_CABLE)
data.eudo |= EUDO_CABLE_TYPE_OPTICAL << EUDO_CABLE_TYPE_SHIFT; data.eudo |= EUDO_CABLE_TYPE_OPTICAL << EUDO_CABLE_TYPE_SHIFT;
else if (pd_ctrl->control_flags & USB_PD_CTRL_ACTIVE_CABLE) else if (cros_typec_get_cable_vdo(port, USB_TYPEC_TBT_SID) & TBT_CABLE_RETIMER)
data.eudo |= EUDO_CABLE_TYPE_RE_TIMER << EUDO_CABLE_TYPE_SHIFT; data.eudo |= EUDO_CABLE_TYPE_RE_TIMER << EUDO_CABLE_TYPE_SHIFT;
else if (pd_ctrl->control_flags & USB_PD_CTRL_ACTIVE_CABLE)
data.eudo |= EUDO_CABLE_TYPE_RE_DRIVER << EUDO_CABLE_TYPE_SHIFT;
data.active_link_training = !!(pd_ctrl->control_flags & data.active_link_training = !!(pd_ctrl->control_flags &
USB_PD_CTRL_ACTIVE_LINK_UNIDIR); USB_PD_CTRL_ACTIVE_LINK_UNIDIR);