diff options
| author | Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> | 2014-12-09 20:11:18 +0300 |
|---|---|---|
| committer | Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> | 2014-12-23 13:01:52 +0300 |
| commit | 906eff7fcada4186cde54eb89572fb774ab294a0 (patch) | |
| tree | 822644b69e6fffb49ab36f40a2d5ce1c63ab9824 /drivers/gpu/drm/rcar-du/rcar_du_plane.c | |
| parent | 3dbf11e42108d2c8a497923df959eb82388131f8 (diff) | |
| download | linux-906eff7fcada4186cde54eb89572fb774ab294a0.tar.xz | |
drm: rcar-du: Implement support for interlaced modes
Accept interlaced modes on the VGA and HDMI connectors and configure the
hardware accordingly.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Diffstat (limited to 'drivers/gpu/drm/rcar-du/rcar_du_plane.c')
| -rw-r--r-- | drivers/gpu/drm/rcar-du/rcar_du_plane.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_plane.c b/drivers/gpu/drm/rcar-du/rcar_du_plane.c index fb3ea4f95d4a..50f2f2b20d39 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_plane.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_plane.c @@ -104,14 +104,22 @@ void rcar_du_plane_update_base(struct rcar_du_plane *plane) { struct rcar_du_group *rgrp = plane->group; unsigned int index = plane->hwindex; + bool interlaced; u32 mwr; - /* Memory pitch (expressed in pixels) */ + interlaced = plane->crtc->mode.flags & DRM_MODE_FLAG_INTERLACE; + + /* Memory pitch (expressed in pixels). Must be doubled for interlaced + * operation with 32bpp formats. + */ if (plane->format->planes == 2) mwr = plane->pitch; else mwr = plane->pitch * 8 / plane->format->bpp; + if (interlaced && plane->format->bpp == 32) + mwr *= 2; + rcar_du_plane_write(rgrp, index, PnMWR, mwr); /* The Y position is expressed in raster line units and must be doubled @@ -119,12 +127,16 @@ void rcar_du_plane_update_base(struct rcar_du_plane *plane) * doubling the Y position is found in the R8A7779 datasheet, but the * rule seems to apply there as well. * + * Despite not being documented, doubling seem not to be needed when + * operating in interlaced mode. + * * Similarly, for the second plane, NV12 and NV21 formats seem to - * require a halved Y position value. + * require a halved Y position value, in both progressive and interlaced + * modes. */ rcar_du_plane_write(rgrp, index, PnSPXR, plane->src_x); rcar_du_plane_write(rgrp, index, PnSPYR, plane->src_y * - (plane->format->bpp == 32 ? 2 : 1)); + (!interlaced && plane->format->bpp == 32 ? 2 : 1)); rcar_du_plane_write(rgrp, index, PnDSA0R, plane->dma[0]); if (plane->format->planes == 2) { |