diff options
Diffstat (limited to 'drivers/gpu/drm/rcar-du/rcar_du_crtc.c')
| -rw-r--r-- | drivers/gpu/drm/rcar-du/rcar_du_crtc.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c index 227a9be30715..169ca0c8912f 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0+ /* - * rcar_du_crtc.c -- R-Car Display Unit CRTCs + * R-Car Display Unit CRTCs * * Copyright (C) 2013-2015 Renesas Electronics Corporation * @@ -299,6 +299,11 @@ static void rcar_du_crtc_set_display_timing(struct rcar_du_crtc *rcrtc) | DSMR_DIPM_DISP | DSMR_CSPM; rcar_du_crtc_write(rcrtc, DSMR, dsmr); + /* + * When the CMM is enabled, an additional offset of 25 pixels must be + * subtracted from the HDS (horizontal display start) and HDE + * (horizontal display end) registers. + */ hdse_offset = 19; if (rcrtc->group->cmms_mask & BIT(rcrtc->index % 2)) hdse_offset += 25; |