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Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.14.71/0283-drm-amd-display-Fixed-bandwidth-calculation-error-wh.patch')
-rw-r--r--common/recipes-kernel/linux/linux-yocto-4.14.71/0283-drm-amd-display-Fixed-bandwidth-calculation-error-wh.patch47
1 files changed, 47 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.14.71/0283-drm-amd-display-Fixed-bandwidth-calculation-error-wh.patch b/common/recipes-kernel/linux/linux-yocto-4.14.71/0283-drm-amd-display-Fixed-bandwidth-calculation-error-wh.patch
new file mode 100644
index 00000000..e7c41363
--- /dev/null
+++ b/common/recipes-kernel/linux/linux-yocto-4.14.71/0283-drm-amd-display-Fixed-bandwidth-calculation-error-wh.patch
@@ -0,0 +1,47 @@
+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
+