[Public]
Reviewed-by: Roman Li <roman...@amd.com>
-----Original Message-----
From: Bindu Ramamurthy <bind...@amd.com>
Sent: Thursday, May 20, 2021 5:04 PM
To: amd-gfx@lists.freedesktop.org
Cc: Li, Roman <roman...@amd.com>; R, Bindu <bind...@amd.com>
Subject: [PATCH] drm/amd/display: Allow bandwidth validation for 0 streams.
[Why]
Bandwidth calculations are triggered for non zero streams, and
in case of 0 streams these calculations were skipped with
pstate status not being updated.
[How]
As the pstate status is applicable for non zero streams, check
added for allowing 0 streams inline with dcn internal bandwidth
validations.
Signed-off-by: Bindu Ramamurthy <bind...@amd.com>
---
drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
index 6a56a03cfba3..0b49420e7d64 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
@@ -3236,7 +3236,7 @@ static noinline bool dcn20_validate_bandwidth_fp(struct
dc *dc,
voltage_supported = dcn20_validate_bandwidth_internal(dc, context,
false);
dummy_pstate_supported =
context->bw_ctx.bw.dcn.clk.p_state_change_support;
- if (voltage_supported && dummy_pstate_supported) {
+ if (voltage_supported && (dummy_pstate_supported ||
!(context->stream_count))) {
context->bw_ctx.bw.dcn.clk.p_state_change_support = false;
goto restore_dml_state;
}
--
2.25.1
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