[PATCH 16/18] drm/bridge: cdns-dsi: Update htotal in cdns_dsi_mode2cfg()
From: Tomi Valkeinen
Date: Thu Mar 20 2025 - 12:07:16 EST
cdns_dsi_mode2cfg() calculates the dsi timings, but for some reason
doesn't set the htotal based on those timings. It is set only later, in
cdns_dsi_adjust_phy_config().
As cdns_dsi_mode2cfg() is the logical place to calculate it, let's move
it there. Especially as the following patch will remove
cdns_dsi_adjust_phy_config().
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/bridge/cadence/cdns-dsi-core.c | 19 ++++++++++---------
1 file changed, 10 insertions(+), 9 deletions(-)
diff --git a/drivers/gpu/drm/bridge/cadence/cdns-dsi-core.c b/drivers/gpu/drm/bridge/cadence/cdns-dsi-core.c
index 9f4f7b6c8330..2a272fd8ea3e 100644
--- a/drivers/gpu/drm/bridge/cadence/cdns-dsi-core.c
+++ b/drivers/gpu/drm/bridge/cadence/cdns-dsi-core.c
@@ -505,6 +505,15 @@ static int cdns_dsi_mode2cfg(struct cdns_dsi *dsi,
dsi_cfg->hfp = dpi_to_dsi_timing(dpi_hfp, bpp, DSI_HFP_FRAME_OVERHEAD);
+ dsi_cfg->htotal = dsi_cfg->hact + dsi_cfg->hfp + DSI_HFP_FRAME_OVERHEAD;
+
+ if (sync_pulse) {
+ dsi_cfg->htotal += dsi_cfg->hbp + DSI_HBP_FRAME_PULSE_OVERHEAD;
+ dsi_cfg->htotal += dsi_cfg->hsa + DSI_HSA_FRAME_OVERHEAD;
+ } else {
+ dsi_cfg->htotal += dsi_cfg->hbp + DSI_HBP_FRAME_EVENT_OVERHEAD;
+ }
+
return 0;
}
@@ -522,15 +531,7 @@ static int cdns_dsi_adjust_phy_config(struct cdns_dsi *dsi,
unsigned int dsi_hfp_ext;
unsigned int lanes = output->dev->lanes;
- if (output->dev->mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE) {
- dsi_htotal = dsi_cfg->hbp + DSI_HBP_FRAME_PULSE_OVERHEAD;
- dsi_htotal += dsi_cfg->hsa + DSI_HSA_FRAME_OVERHEAD;
- } else {
- dsi_htotal = dsi_cfg->hbp + DSI_HBP_FRAME_EVENT_OVERHEAD;
- }
-
- dsi_htotal += dsi_cfg->hact;
- dsi_htotal += dsi_cfg->hfp + DSI_HFP_FRAME_OVERHEAD;
+ dsi_htotal = dsi_cfg->htotal;
/*
* Make sure DSI htotal is aligned on a lane boundary when calculating
--
2.43.0