Use the AUX_IO_A display power domain only for eDP on port A where PSR
is also supported. This is the case where DC states need to be enabled
while the output is enabled - ensured by AUX_IO_A domain not enabling
the DC_OFF power well. Otherwise port A can be treated the same way as
other ports with an external DP output: using the AUX_<port> domain
which disables the unrequired DC states.
This change prepares for the next patch enabling DC states on all ports
supporting eDP/PSR besides port A.
v2:
- Check the encoder PSR capability instead of PSR being enabled in the
crtc_state, as the latter can be changed with a fastset.
Cc: Ville Syrjälä <ville.syrj...@linux.intel.com>
Signed-off-by: Imre Deak <imre.d...@intel.com>
---
drivers/gpu/drm/i915/display/intel_ddi.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c
b/drivers/gpu/drm/i915/display/intel_ddi.c
index e95bde5cf060e..ca236cd7f9b76 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -860,8 +860,10 @@ intel_ddi_main_link_aux_domain(struct intel_digital_port
*dig_port)
* Note that PSR is enabled only on Port A even though this function
* returns the correct domain for other ports too.
*/
- return dig_port->aux_ch == AUX_CH_A ? POWER_DOMAIN_AUX_IO_A :
- intel_aux_power_domain(dig_port);
+ if (dig_port->aux_ch == AUX_CH_A &&
intel_encoder_can_psr(&dig_port->base))
+ return POWER_DOMAIN_AUX_IO_A;
+ else
+ return intel_aux_power_domain(dig_port);
}
static void intel_ddi_get_power_domains(struct intel_encoder *encoder,
--
2.37.1
