A follow-up patch will disconnect/reconnect PHYs around AUX transfers
and modeset enable/disables. To prepare for that and make things
consistent for all TypeC modes stop connecting the PHY in legacy mode
without a sink being connected. This was done before since in legacy
mode the PHY is dedicated to display usage, so there was no point in
disconnecting it. However after the follow-up changes the TC-cold
blocking power domains will be held as long as the PHY is in the
connected state, so we'll need to disconnect/re-connect the PHY in all
TypeC modes to allow for power saving.
Cc: José Roberto de Souza <jose.souza@xxxxxxxxx>
Signed-off-by: Imre Deak <imre.deak@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_tc.c | 12 +-----------
1 file changed, 1 insertion(+), 11 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_tc.c b/drivers/gpu/drm/i915/display/intel_tc.c
index 511c46e36e237..aa4c1e5e0c002 100644
--- a/drivers/gpu/drm/i915/display/intel_tc.c
+++ b/drivers/gpu/drm/i915/display/intel_tc.c
@@ -511,8 +511,6 @@ static void icl_tc_phy_disconnect(struct intel_digital_port *dig_port)
{
switch (dig_port->tc_mode) {
case TC_PORT_LEGACY:
- /* Nothing to do, we never disconnect from legacy mode */
- break;
case TC_PORT_DP_ALT:
tc_phy_take_ownership(dig_port, false);
dig_port->tc_mode = TC_PORT_TBT_ALT;
@@ -580,9 +578,7 @@ intel_tc_port_get_target_mode(struct intel_digital_port *dig_port)
if (live_status_mask)
return fls(live_status_mask) - 1;
- return tc_phy_status_complete(dig_port) &&
- dig_port->tc_legacy_port ? TC_PORT_LEGACY :
- TC_PORT_TBT_ALT;
+ return TC_PORT_TBT_ALT;
}
static void intel_tc_port_reset_mode(struct intel_digital_port *dig_port,
@@ -643,14 +639,8 @@ void intel_tc_port_sanitize(struct intel_digital_port *dig_port)
"Port %s: PHY disconnected with %d active link(s)\n",
dig_port->tc_port_name, active_links);
intel_tc_port_link_init_refcount(dig_port, active_links);
-
- goto out;
}
- if (dig_port->tc_legacy_port)
- icl_tc_phy_connect(dig_port, 1);
-
-out:
drm_dbg_kms(&i915->drm, "Port %s: sanitize mode (%s)\n",
dig_port->tc_port_name,
tc_port_mode_name(dig_port->tc_mode));
--
2.27.0
