diff options
Diffstat (limited to 'drivers/gpu/drm/tegra/dsi.c')
| -rw-r--r-- | drivers/gpu/drm/tegra/dsi.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/gpu/drm/tegra/dsi.c b/drivers/gpu/drm/tegra/dsi.c index ed970f622903..5c489c257555 100644 --- a/drivers/gpu/drm/tegra/dsi.c +++ b/drivers/gpu/drm/tegra/dsi.c @@ -548,14 +548,19 @@ static void tegra_dsi_configure(struct tegra_dsi *dsi, unsigned int pipe, /* horizontal sync width */ hsw = (mode->hsync_end - mode->hsync_start) * mul / div; - hsw -= 10; /* horizontal back porch */ hbp = (mode->htotal - mode->hsync_end) * mul / div; - hbp -= 14; + + if ((dsi->flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE) == 0) + hbp += hsw; /* horizontal front porch */ hfp = (mode->hsync_start - mode->hdisplay) * mul / div; + + /* subtract packet overhead */ + hsw -= 10; + hbp -= 14; hfp -= 8; tegra_dsi_writel(dsi, hsw << 16 | 0, DSI_PKT_LEN_0_1); |