diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.19.8/1006-drm-amd-display-Fix-issue-with-VLine-interrupt-not-f.patch')
| -rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.19.8/1006-drm-amd-display-Fix-issue-with-VLine-interrupt-not-f.patch | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.19.8/1006-drm-amd-display-Fix-issue-with-VLine-interrupt-not-f.patch b/common/recipes-kernel/linux/linux-yocto-4.19.8/1006-drm-amd-display-Fix-issue-with-VLine-interrupt-not-f.patch new file mode 100644 index 00000000..42a8870c --- /dev/null +++ b/common/recipes-kernel/linux/linux-yocto-4.19.8/1006-drm-amd-display-Fix-issue-with-VLine-interrupt-not-f.patch @@ -0,0 +1,94 @@ +From c88421a6bf84ded6ffe577b5350542b514e92568 Mon Sep 17 00:00:00 2001 +From: Krunoslav Kovac <Krunoslav.Kovac@amd.com> +Date: Tue, 13 Nov 2018 15:32:24 -0500 +Subject: [PATCH 1006/2940] drm/amd/display: Fix issue with VLine interrupt not + firing + +[Why] +We are not correctly handling the wrap around case. +VLine interrupt is relative to position of VUpdate interrupt. + +Both VUpdate interrupt and VLine interrupt could possibly +be in front porch or back porch. + +[How] +Fix wraparound case by checking for line number that is +greater than the VTOTAL of the OTG timing. In this case, +the interrupt should occur on the next frame. + +Also fix some variable naming and remove some dead code. + +Signed-off-by: Krunoslav Kovac <Krunoslav.Kovac@amd.com> +Reviewed-by: Anthony Koo <Anthony.Koo@amd.com> +Acked-by: Leo Li <sunpeng.li@amd.com> +Acked-by: Tony Cheng <Tony.Cheng@amd.com> +Signed-off-by: Alex Deucher <alexander.deucher@amd.com> +--- + .../gpu/drm/amd/display/dc/dcn10/dcn10_optc.c | 25 +++++++------------ + 1 file changed, 9 insertions(+), 16 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 cdb3f096eb25..57d00d660462 100644 +--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c ++++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c +@@ -102,14 +102,6 @@ static uint32_t get_start_vline(struct timing_generator *optc, const struct dc_c + patched_crtc_timing = *dc_crtc_timing; + optc1_apply_front_porch_workaround(optc, &patched_crtc_timing); + +- vesa_sync_start = patched_crtc_timing.h_addressable + +- patched_crtc_timing.h_border_right + +- patched_crtc_timing.h_front_porch; +- +- asic_blank_end = patched_crtc_timing.h_total - +- vesa_sync_start - +- patched_crtc_timing.h_border_left; +- + vesa_sync_start = patched_crtc_timing.v_addressable + + patched_crtc_timing.v_border_bottom + + patched_crtc_timing.v_front_porch; +@@ -119,10 +111,8 @@ static uint32_t get_start_vline(struct timing_generator *optc, const struct dc_c + patched_crtc_timing.v_border_top); + + vertical_line_start = asic_blank_end - optc->dlg_otg_param.vstartup_start + 1; +- if (vertical_line_start < 0) { +- ASSERT(0); ++ if (vertical_line_start < 0) + vertical_line_start = 0; +- } + + return vertical_line_start; + } +@@ -143,7 +133,7 @@ void optc1_program_vline_interrupt( + + uint32_t vsync_line = get_start_vline(optc, dc_crtc_timing); + uint32_t start_line = 0; +- uint32_t endLine = 0; ++ uint32_t end_line = 0; + + if (req_delta_lines != 0) + req_delta_lines--; +@@ -153,14 +143,17 @@ void optc1_program_vline_interrupt( + else + start_line = vsync_line - req_delta_lines; + +- endLine = start_line + 2; ++ end_line = start_line + 2; ++ ++ if (start_line >= dc_crtc_timing->v_total) ++ start_line = start_line % dc_crtc_timing->v_total; + +- if (endLine >= dc_crtc_timing->v_total) +- endLine = 2; ++ if (end_line >= dc_crtc_timing->v_total) ++ end_line = end_line % dc_crtc_timing->v_total; + + REG_SET_2(OTG_VERTICAL_INTERRUPT0_POSITION, 0, + OTG_VERTICAL_INTERRUPT0_LINE_START, start_line, +- OTG_VERTICAL_INTERRUPT0_LINE_END, endLine); ++ OTG_VERTICAL_INTERRUPT0_LINE_END, end_line); + } + + /** +-- +2.17.1 + |