From: Krunoslav Kovac Date: Tue, 13 Nov 2018 20:32:24 +0000 (-0500) Subject: drm/amd/display: Fix issue with VLine interrupt not firing X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=ef32bc1c751694743703ff150b270bbcf8ad4de2;p=linux.git 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 Reviewed-by: Anthony Koo Acked-by: Leo Li Acked-by: Tony Cheng Signed-off-by: Alex Deucher --- 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 cdb3f096eb255..57d00d660462a 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); } /**