From 34b6b9edb0dbe718c93463c7b397b6e12abb3d85 Mon Sep 17 00:00:00 2001 From: Logatharshan Thothiralingam 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 Acked-by: Harry Wentland Reviewed-by: Tony Cheng Signed-off-by: Alex Deucher --- 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