display: dc: Add wrap_output_delay for dual_dsc

Calculate wrap_output_delay based on the number
of dsc modules used.

Bug 1839145

Change-Id: I3bfad23374429906d79e773e9f4e3e2cf39725c8
Signed-off-by: Arun Swain <arswain@nvidia.com>
Reviewed-on: http://git-master/r/1227533
Reviewed-by: Automatic_Commit_Validation_User
Tested-by: Ishwarya Balaji Gururajan <igururajan@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Mitch Luban <mluban@nvidia.com>

1 files changed, 7 insertions, 1 deletions

diff --git a/drivers/video/tegra/dc/dc.c b/drivers/video/tegra/dc/dc.c
index 84ff88cee..20008b2f4 100644
--- a/drivers/video/tegra/dc/dc.c
+++ b/drivers/video/tegra/dc/dc.c
@@ -4582,7 +4582,13 @@ void tegra_dc_dsc_init(struct tegra_dc *dc)
         hblank = mode->h_sync_width + mode->h_front_porch + mode->h_back_porch;
         output_delay = ((delay_in_slice / slice_width) *
                 (mode->h_active + hblank)) + (delay_in_slice % slice_width);
-        wrap_output_delay = output_delay + 20;
+        if (dc->out->dual_dsc_en) {
+                wrap_output_delay = output_delay * 2 + mode->h_active / 2 + 28;
+                if (wrap_output_delay % 2)
+                        wrap_output_delay += 1;
+        } else {
+                wrap_output_delay = output_delay + 20;
+        }
         val = DSC_VALID_OUTPUT_DELAY(output_delay);
         val |= DSC_VALID_WRAP_OUTPUT_DELAY(wrap_output_delay);
         tegra_dc_writel(dc, val, DC_COM_DSC_DELAY);