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From 34b6b9edb0dbe718c93463c7b397b6e12abb3d85 Mon Sep 17 00:00:00 2001
From: Logatharshan Thothiralingam <logatharshan.thothiralingam@amd.com>
Date: Thu, 9 Mar 2017 11:37:26 -0500
Subject: [PATCH 0283/4131] drm/amd/display: Fixed bandwidth calculation error
when converting fractions
[Problem]
VSR greyed out
[Root cause]
When converting fractions, we were using the integer function, which let to
a large display clock and the view was not supported
[Solution]
Change the integer to fraction functions
Signed-off-by: Logatharshan Thothiralingam <logatharshan.thothiralingam@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/display/dc/calcs/dce_calcs.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/calcs/dce_calcs.c b/drivers/gpu/drm/amd/display/dc/calcs/dce_calcs.c
index c855e49..e477943 100644
--- a/drivers/gpu/drm/amd/display/dc/calcs/dce_calcs.c
+++ b/drivers/gpu/drm/amd/display/dc/calcs/dce_calcs.c
@@ -796,11 +796,11 @@ static void calculate_bandwidth(
}
else if (bw_leq(data->vsr[i], bw_int_to_fixed(1))) {
data->lb_lines_in_per_line_out_in_middle_of_frame[i] = bw_int_to_fixed(1);
- }
- else if (bw_leq(data->vsr[i], bw_int_to_fixed(4 / 3))) {
+ } else if (bw_leq(data->vsr[i],
+ bw_frc_to_fixed(4, 3))) {
data->lb_lines_in_per_line_out_in_middle_of_frame[i] = bw_div(bw_int_to_fixed(4), bw_int_to_fixed(3));
- }
- else if (bw_leq(data->vsr[i], bw_int_to_fixed(6 / 4))) {
+ } else if (bw_leq(data->vsr[i],
+ bw_frc_to_fixed(6, 4))) {
data->lb_lines_in_per_line_out_in_middle_of_frame[i] = bw_div(bw_int_to_fixed(6), bw_int_to_fixed(4));
}
else if (bw_leq(data->vsr[i], bw_int_to_fixed(2))) {
--
2.7.4
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