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Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/0226-drm-amd-display-fix-12bpc-truncate-to-10bpc.patch')
-rw-r--r--meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/0226-drm-amd-display-fix-12bpc-truncate-to-10bpc.patch62
1 files changed, 62 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/0226-drm-amd-display-fix-12bpc-truncate-to-10bpc.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/0226-drm-amd-display-fix-12bpc-truncate-to-10bpc.patch
new file mode 100644
index 00000000..92f68106
--- /dev/null
+++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/0226-drm-amd-display-fix-12bpc-truncate-to-10bpc.patch
@@ -0,0 +1,62 @@
+From 7c081351ef763b97fb888f01fe4e2bee40a2cd3b Mon Sep 17 00:00:00 2001
+From: Charlene Liu <charlene.liu@amd.com>
+Date: Fri, 17 Feb 2017 13:51:32 -0500
+Subject: [PATCH 0226/4131] drm/amd/display: fix 12bpc truncate to 10bpc
+
+Signed-off-by: Charlene Liu <charlene.liu@amd.com>
+Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
+Acked-by: Harry Wentland <Harry.Wentland@amd.com>
+Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
+---
+ drivers/gpu/drm/amd/display/dc/dce/dce_opp.c | 18 +++++++++---------
+ 1 file changed, 9 insertions(+), 9 deletions(-)
+
+diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_opp.c b/drivers/gpu/drm/amd/display/dc/dce/dce_opp.c
+index a2f57cf..121ccbb 100644
+--- a/drivers/gpu/drm/amd/display/dc/dce/dce_opp.c
++++ b/drivers/gpu/drm/amd/display/dc/dce/dce_opp.c
+@@ -710,32 +710,32 @@ void dce110_opp_set_dyn_expansion(
+ enum signal_type signal)
+ {
+ struct dce110_opp *opp110 = TO_DCE110_OPP(opp);
+- bool enable_dyn_exp = false;
+
+ REG_UPDATE_2(FMT_DYNAMIC_EXP_CNTL,
+ FMT_DYNAMIC_EXP_EN, 0,
+ FMT_DYNAMIC_EXP_MODE, 0);
+- /* From HW programming guide:
+- FMT_DYNAMIC_EXP_EN = 0 for limited RGB or YCbCr output
+- FMT_DYNAMIC_EXP_EN = 1 for RGB full range only*/
+- if (color_sp == COLOR_SPACE_SRGB)
+- enable_dyn_exp = true;
+
+ /*00 - 10-bit -> 12-bit dynamic expansion*/
+ /*01 - 8-bit -> 12-bit dynamic expansion*/
+- if (signal == SIGNAL_TYPE_HDMI_TYPE_A) {
++ if (signal == SIGNAL_TYPE_HDMI_TYPE_A ||
++ signal == SIGNAL_TYPE_DISPLAY_PORT ||
++ signal == SIGNAL_TYPE_DISPLAY_PORT_MST) {
+ switch (color_dpth) {
+ case COLOR_DEPTH_888:
+ REG_UPDATE_2(FMT_DYNAMIC_EXP_CNTL,
+- FMT_DYNAMIC_EXP_EN, enable_dyn_exp ? 1:0,
++ FMT_DYNAMIC_EXP_EN, 1,
+ FMT_DYNAMIC_EXP_MODE, 1);
+ break;
+ case COLOR_DEPTH_101010:
+ REG_UPDATE_2(FMT_DYNAMIC_EXP_CNTL,
+- FMT_DYNAMIC_EXP_EN, enable_dyn_exp ? 1:0,
++ FMT_DYNAMIC_EXP_EN, 1,
+ FMT_DYNAMIC_EXP_MODE, 0);
+ break;
+ case COLOR_DEPTH_121212:
++ REG_UPDATE_2(
++ FMT_DYNAMIC_EXP_CNTL,
++ FMT_DYNAMIC_EXP_EN, 1,/*otherwise last two bits are zero*/
++ FMT_DYNAMIC_EXP_MODE, 0);
+ break;
+ default:
+ break;
+--
+2.7.4
+