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From a0a07ba5b0d225cc6b78246dd20eb9d36cb52f56 Mon Sep 17 00:00:00 2001
From: Nikola Cornij <nikola.cornij@amd.com>
Date: Wed, 27 Mar 2019 18:54:19 -0400
Subject: [PATCH 2488/2940] drm/amd/display: Remove additional FEC link
bandwidth reduction
[why]
This is now done in the original link bandwidth calculation and DSC
must not do this anymore.
[how]
Remove the line of code that should have been removed when transition
to correctly applying FEC overhead was made.
Signed-off-by: Nikola Cornij <nikola.cornij@amd.com>
Reviewed-by: Wenjing Liu <Wenjing.Liu@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c b/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c
index e71197d35d79..471eb9873885 100644
--- a/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c
+++ b/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c
@@ -311,19 +311,18 @@ static void get_dsc_bandwidth_range(
*
* Returns:
* - 'true' if DSC was required by policy and was successfully applied
- * - 'false' if DSC was not necessary (e.g. if uncompressed stream fits 'target_bandwidth'),
+ * - 'false' if DSC was not necessary (e.g. if uncompressed stream fits 'target_bandwidth_kbps'),
* or if it couldn't be applied based on DSC policy.
*/
static bool decide_dsc_target_bpp_x16(
const struct dc_dsc_policy *policy,
const struct dsc_enc_caps *dsc_common_caps,
- const int target_bandwidth,
+ const int target_bandwidth_kbps,
const struct dc_crtc_timing *timing,
int *target_bpp_x16)
{
bool should_use_dsc = false;
struct dc_dsc_bw_range range;
- float target_bandwidth_kbps = target_bandwidth * 0.97f; // 3% overhead for FEC
memset(&range, 0, sizeof(range));
--
2.17.1
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