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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>
This commit is contained in:
parent
3dbf11e421
commit
906eff7fca
5 changed files with 33 additions and 11 deletions
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@ -155,12 +155,15 @@ static void rcar_du_crtc_set_display_timing(struct rcar_du_crtc *rcrtc)
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mode->hsync_start - 1);
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rcar_du_crtc_write(rcrtc, HCR, mode->htotal - 1);
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rcar_du_crtc_write(rcrtc, VDSR, mode->vtotal - mode->vsync_end - 2);
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rcar_du_crtc_write(rcrtc, VDER, mode->vtotal - mode->vsync_end +
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mode->vdisplay - 2);
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rcar_du_crtc_write(rcrtc, VSPR, mode->vtotal - mode->vsync_end +
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mode->vsync_start - 1);
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rcar_du_crtc_write(rcrtc, VCR, mode->vtotal - 1);
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rcar_du_crtc_write(rcrtc, VDSR, mode->crtc_vtotal -
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mode->crtc_vsync_end - 2);
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rcar_du_crtc_write(rcrtc, VDER, mode->crtc_vtotal -
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mode->crtc_vsync_end +
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mode->crtc_vdisplay - 2);
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rcar_du_crtc_write(rcrtc, VSPR, mode->crtc_vtotal -
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mode->crtc_vsync_end +
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mode->crtc_vsync_start - 1);
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rcar_du_crtc_write(rcrtc, VCR, mode->crtc_vtotal - 1);
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rcar_du_crtc_write(rcrtc, DESR, mode->htotal - mode->hsync_start);
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rcar_du_crtc_write(rcrtc, DEWR, mode->hdisplay);
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@ -256,6 +259,7 @@ void rcar_du_crtc_update_planes(struct drm_crtc *crtc)
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static void rcar_du_crtc_start(struct rcar_du_crtc *rcrtc)
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{
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struct drm_crtc *crtc = &rcrtc->crtc;
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bool interlaced;
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unsigned int i;
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if (rcrtc->started)
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@ -291,7 +295,10 @@ static void rcar_du_crtc_start(struct rcar_du_crtc *rcrtc)
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* sync mode (with the HSYNC and VSYNC signals configured as outputs and
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* actively driven).
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*/
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rcar_du_crtc_clr_set(rcrtc, DSYSR, DSYSR_TVM_MASK, DSYSR_TVM_MASTER);
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interlaced = rcrtc->crtc.mode.flags & DRM_MODE_FLAG_INTERLACE;
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rcar_du_crtc_clr_set(rcrtc, DSYSR, DSYSR_TVM_MASK | DSYSR_SCM_MASK,
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(interlaced ? DSYSR_SCM_INT_VIDEO : 0) |
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DSYSR_TVM_MASTER);
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rcar_du_group_start_stop(rcrtc->group, true);
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@ -528,7 +535,7 @@ static irqreturn_t rcar_du_crtc_irq(int irq, void *arg)
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status = rcar_du_crtc_read(rcrtc, DSSR);
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rcar_du_crtc_write(rcrtc, DSRCR, status & DSRCR_MASK);
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if (status & DSSR_VBK) {
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if (status & DSSR_FRM) {
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drm_handle_vblank(rcrtc->crtc.dev, rcrtc->index);
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rcar_du_crtc_finish_page_flip(rcrtc);
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ret = IRQ_HANDLED;
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@ -95,6 +95,7 @@ int rcar_du_hdmi_connector_init(struct rcar_du_device *rcdu,
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connector = &rcon->connector;
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connector->display_info.width_mm = 0;
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connector->display_info.height_mm = 0;
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connector->interlace_allowed = true;
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connector->polled = DRM_CONNECTOR_POLL_HPD;
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ret = drm_connector_init(rcdu->ddev, connector, &connector_funcs,
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@ -104,14 +104,22 @@ void rcar_du_plane_update_base(struct rcar_du_plane *plane)
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{
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struct rcar_du_group *rgrp = plane->group;
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unsigned int index = plane->hwindex;
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bool interlaced;
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u32 mwr;
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/* Memory pitch (expressed in pixels) */
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interlaced = plane->crtc->mode.flags & DRM_MODE_FLAG_INTERLACE;
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/* Memory pitch (expressed in pixels). Must be doubled for interlaced
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* operation with 32bpp formats.
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*/
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if (plane->format->planes == 2)
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mwr = plane->pitch;
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else
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mwr = plane->pitch * 8 / plane->format->bpp;
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if (interlaced && plane->format->bpp == 32)
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mwr *= 2;
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rcar_du_plane_write(rgrp, index, PnMWR, mwr);
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/* The Y position is expressed in raster line units and must be doubled
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@ -119,12 +127,16 @@ void rcar_du_plane_update_base(struct rcar_du_plane *plane)
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* doubling the Y position is found in the R8A7779 datasheet, but the
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* rule seems to apply there as well.
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*
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* Despite not being documented, doubling seem not to be needed when
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* operating in interlaced mode.
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*
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* Similarly, for the second plane, NV12 and NV21 formats seem to
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* require a halved Y position value.
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* require a halved Y position value, in both progressive and interlaced
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* modes.
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*/
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rcar_du_plane_write(rgrp, index, PnSPXR, plane->src_x);
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rcar_du_plane_write(rgrp, index, PnSPYR, plane->src_y *
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(plane->format->bpp == 32 ? 2 : 1));
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(!interlaced && plane->format->bpp == 32 ? 2 : 1));
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rcar_du_plane_write(rgrp, index, PnDSA0R, plane->dma[0]);
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if (plane->format->planes == 2) {
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@ -34,6 +34,7 @@
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#define DSYSR_SCM_INT_NONE (0 << 4)
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#define DSYSR_SCM_INT_SYNC (2 << 4)
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#define DSYSR_SCM_INT_VIDEO (3 << 4)
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#define DSYSR_SCM_MASK (3 << 4)
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#define DSMR 0x00004
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#define DSMR_VSPM (1 << 28)
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@ -64,6 +64,7 @@ int rcar_du_vga_connector_init(struct rcar_du_device *rcdu,
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connector = &rcon->connector;
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connector->display_info.width_mm = 0;
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connector->display_info.height_mm = 0;
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connector->interlace_allowed = true;
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ret = drm_connector_init(rcdu->ddev, connector, &connector_funcs,
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DRM_MODE_CONNECTOR_VGA);
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