[PATCH 14/22] drm/amd/display: Disable unbounded request mode during rotation

[Qingqing Zhuo]

From: Nasir Osman <nasir.osman at amd.com>

[why]
HUBP_UNBOUNDED_REQ_MODE being enabled while the display is rotated (eg.
going from Portrait mode to Landscape mode) appears to be causing a
p-state hang, specifically during full screen mode on the Tiktok PC app.
Unbounded request mode doesn't appear to be supported with rotation
configs, hence disabling it.

[how]
Within DML, modified unbounded request mode to be configured only when
the rotation angle of the plane is 0.

Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas at amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo at amd.com>
Signed-off-by: Nasir Osman<nasir.osman at amd.com>
---
 drivers/gpu/drm/amd/display/dc/dml/dcn314/dcn314_fpu.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn314/dcn314_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn314/dcn314_fpu.c
index 6a1cf6adea77..a86a3a9fcdb7 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn314/dcn314_fpu.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn314/dcn314_fpu.c
@@ -346,7 +346,8 @@ int dcn314_populate_dml_pipes_from_context_fpu(struct dc *dc, struct dc_state *c
 	context->bw_ctx.dml.ip.det_buffer_size_kbytes = DCN3_14_DEFAULT_DET_SIZE;
 
 	dc->config.enable_4to1MPC = false;
-	if (pipe_cnt == 1 && pipe->plane_state && !dc->debug.disable_z9_mpc) {
+	if (pipe_cnt == 1 && pipe->plane_state
+		&& pipe->plane_state->rotation == ROTATION_ANGLE_0 && !dc->debug.disable_z9_mpc) {
 		if (is_dual_plane(pipe->plane_state->format)
 				&& pipe->plane_state->src_rect.width <= 1920 && pipe->plane_state->src_rect.height <= 1080) {
 			dc->config.enable_4to1MPC = true;
-- 
2.25.1