drm: rcar-du: Support interlaced video output through vsp1
Use the newly exposed VSP1 interface to enable interlaced frame support
through the VSP1 LIF pipelines.
The DSMR register is updated to set the ODEV flag on interlaced
pipelines, thus defining an interlaced stream as having the ODD field
located in the second half (BOTTOM) of the frame buffer.
Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
v5
- Fix commit title
- Document change to DSMR
- Configure through vsp1_du_setup_lif(), rather than
vsp1_du_atomic_update()
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
index 15dc9ca..b52b3e8 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
@@ -289,6 +289,7 @@
/* Signal polarities */
value = ((mode->flags & DRM_MODE_FLAG_PVSYNC) ? DSMR_VSL : 0)
| ((mode->flags & DRM_MODE_FLAG_PHSYNC) ? DSMR_HSL : 0)
+ | ((mode->flags & DRM_MODE_FLAG_INTERLACE) ? DSMR_ODEV : 0)
| DSMR_DIPM_DISP | DSMR_CSPM;
rcar_du_crtc_write(rcrtc, DSMR, value);
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_vsp.c b/drivers/gpu/drm/rcar-du/rcar_du_vsp.c
index 72eebed..a042f11 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_vsp.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_vsp.c
@@ -52,6 +52,7 @@
struct vsp1_du_lif_config cfg = {
.width = mode->hdisplay,
.height = mode->vdisplay,
+ .interlaced = mode->flags & DRM_MODE_FLAG_INTERLACE,
.callback = rcar_du_vsp_complete,
.callback_data = crtc,
};
