[PATCH 13/27] drm/amd/display: Add missing PSR state

[Agustin Gutierrez]

From: Mikita Lipski <mikita.lipski at amd.com>

[why]
PSR_STATE2b was introduced on DMCUB side, but not on the driver side,
which caused convert_psr_state helper function to return
PSR_STATE_INVALID. That caused visual lagging during state transition.

[how]
Add PSR_STATE2b to dc_psr_state and convert_psr_state

Reviewed-by: Wyatt Wood <Wyatt.Wood at amd.com>
Acked-by: Agustin Gutierrez Sanchez <agustin.gutierrez at amd.com>
Signed-off-by: Mikita Lipski <mikita.lipski at amd.com>
---
 drivers/gpu/drm/amd/display/dc/dc_types.h     | 1 +
 drivers/gpu/drm/amd/display/dc/dce/dmub_psr.c | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/dc_types.h b/drivers/gpu/drm/amd/display/dc/dc_types.h
index 15c353c389d8..388457ffc0a8 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_types.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_types.h
@@ -653,6 +653,7 @@ enum dc_psr_state {
 	PSR_STATE1a,
 	PSR_STATE2,
 	PSR_STATE2a,
+	PSR_STATE2b,
 	PSR_STATE3,
 	PSR_STATE3Init,
 	PSR_STATE4,
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dmub_psr.c b/drivers/gpu/drm/amd/display/dc/dce/dmub_psr.c
index aa8403bc4c83..05d96ca80512 100644
--- a/drivers/gpu/drm/amd/display/dc/dce/dmub_psr.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dmub_psr.c
@@ -50,6 +50,8 @@ static enum dc_psr_state convert_psr_state(uint32_t raw_state)
 		state = PSR_STATE2;
 	else if (raw_state == 0x21)
 		state = PSR_STATE2a;
+	else if (raw_state == 0x22)
+		state = PSR_STATE2b;
 	else if (raw_state == 0x30)
 		state = PSR_STATE3;
 	else if (raw_state == 0x31)
-- 
2.25.1