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drm/i915/psr: Add a FIXME for the PSR vs. AUX usage conflict

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We need to disable PSR when we are doing AUX by hand, otherwise
it's possible that the PSR hardware could be using the AUX CH
while we try to do our manual stuff. Add a FIXME for now.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230411191429.29895-7-ville.syrjala@linux.intel.com
Reviewed-by: Jouni Högander <jouni.hogander@intel.com>
This commit is contained in:
Ville Syrjälä
2023-04-11 22:14:27 +03:00
parent 2590ef92cd
commit da57e3d6ed
1 changed files with 5 additions and 0 deletions
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5
drivers/gpu/drm/i915/display/intel_dp_aux.c
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@@ -268,6 +268,11 @@ intel_dp_aux_xfer(struct intel_dp *intel_dp,
intel_pps_check_power_unlocked(intel_dp);
/*
* FIXME PSR should be disabled here to prevent
* it using the same AUX CH simultaneously
*/
/* Try to wait for any previous AUX channel activity */
for (try = 0; try < 3; try++) {
status = intel_de_read_notrace(i915, ch_ctl);