We are adding more boolean variable into intel_psr and intel_crtc_state
structs. Add some documentation about these for sake of clarity.

v2: Modify has_psr +  has_panel_replay to mean panel replay

Signed-off-by: Jouni Högander <[email protected]>
Reviewed-by: Animesh Manna <[email protected]>
---
 drivers/gpu/drm/i915/display/intel_psr.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_psr.c 
b/drivers/gpu/drm/i915/display/intel_psr.c
index eef62983e9db..45d13e042ade 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -171,6 +171,22 @@
  *
  * The rest of the bits are more self-explanatory and/or
  * irrelevant for normal operation.
+ *
+ * Description of intel_crtc_state variables. has_psr, has_panel_replay and
+ * has_sel_update:
+ *
+ *  has_psr (alone):                                   PSR1
+ *  has_psr + has_sel_update:                          PSR2
+ *  has_psr + has_panel_replay:                                Panel Replay
+ *  has_psr + has_panel_replay + has_sel_update:       Panel Replay Selective 
Update
+ *
+ * Description of some intel_psr varibles. enabled, panel_replay_enabled,
+ * sel_update_enabled
+ *
+ *  enabled (alone):                                           PSR1
+ *  enabled + sel_update_enabled:                              PSR2
+ *  enabled + panel_replay_enabled:                            Panel Replay
+ *  enabled + panel_replay_enabled + sel_update_enabled:       Panel Replay SU
  */
 
 #define CAN_PSR(intel_dp) ((intel_dp)->psr.sink_support && \
-- 
2.34.1

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