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From d93cd7318470428c5d4d1f0d306c4347dc2ac2ad Mon Sep 17 00:00:00 2001
From: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Date: Fri, 14 Sep 2018 15:32:33 -0400
Subject: [PATCH 5578/5725] drm/amd/display: handle max_vstartup larger than
vblank_end
When vstartup is larger than vblank end we need to set v_fp2
to allow for this early start
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
---
drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c | 11 +++++------
1 file changed, 5 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c
index 5462668..47f80e0 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c
@@ -274,10 +274,12 @@ void optc1_program_timing(
* program the reg for interrupt postition.
*/
vertical_line_start = asic_blank_end - optc->dlg_otg_param.vstartup_start + 1;
- if (vertical_line_start < 0) {
- ASSERT(0);
+ v_fp2 = 0;
+ if (vertical_line_start < 0)
+ v_fp2 = -vertical_line_start;
+ if (vertical_line_start < 0)
vertical_line_start = 0;
- }
+
REG_SET(OTG_VERTICAL_INTERRUPT2_POSITION, 0,
OTG_VERTICAL_INTERRUPT2_LINE_START, vertical_line_start);
@@ -296,9 +298,6 @@ void optc1_program_timing(
if (patched_crtc_timing.flags.INTERLACE == 1)
field_num = 1;
}
- v_fp2 = 0;
- if (optc->dlg_otg_param.vstartup_start > asic_blank_end)
- v_fp2 = optc->dlg_otg_param.vstartup_start > asic_blank_end;
/* Interlace */
if (patched_crtc_timing.flags.INTERLACE == 1) {
--
2.7.4
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