Commit 2d1d898b authored by Ben Skeggs's avatar Ben Skeggs
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drm/nvd0/disp: update crtc timing calculations for interlace/doublescan 



Signed-off-by: default avatarBen Skeggs <bskeggs@redhat.com>
parent f62b27db

drivers/gpu/drm/nouveau/nvd0_display.c

+34 −18
Original line number Diff line number Diff line
@@ -352,21 +352,35 @@ nvd0_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *umode, 
{

	struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);

	struct nouveau_connector *nv_connector;

	u32 htotal = mode->htotal;

	u32 vtotal = mode->vtotal;

	u32 hsyncw = mode->hsync_end - mode->hsync_start - 1;

	u32 vsyncw = mode->vsync_end - mode->vsync_start - 1;

	u32 hfrntp = mode->hsync_start - mode->hdisplay;

	u32 vfrntp = mode->vsync_start - mode->vdisplay;

	u32 hbackp = mode->htotal - mode->hsync_end;

	u32 vbackp = mode->vtotal - mode->vsync_end;

	u32 hss2be = hsyncw + hbackp;

	u32 vss2be = vsyncw + vbackp;

	u32 hss2de = htotal - hfrntp;

	u32 vss2de = vtotal - vfrntp;

	u32 ilace = (mode->flags & DRM_MODE_FLAG_INTERLACE) ? 2 : 1;

	u32 vscan = (mode->flags & DRM_MODE_FLAG_DBLSCAN) ? 2 : 1;

	u32 hactive, hsynce, hbackp, hfrontp, hblanke, hblanks;

	u32 vactive, vsynce, vbackp, vfrontp, vblanke, vblanks;

	u32 vblan2e = 0, vblan2s = 1;

	u32 magic = 0x31ec6000;

	u32 syncs, *push;

	int ret;



	hactive = mode->htotal;

	hsynce  = mode->hsync_end - mode->hsync_start - 1;

	hbackp  = mode->htotal - mode->hsync_end;

	hblanke = hsynce + hbackp;

	hfrontp = mode->hsync_start - mode->hdisplay;

	hblanks = mode->htotal - hfrontp - 1;



	vactive = mode->vtotal * vscan / ilace;

	vsynce  = ((mode->vsync_end - mode->vsync_start) * vscan / ilace) - 1;

	vbackp  = (mode->vtotal - mode->vsync_end) * vscan / ilace;

	vblanke = vsynce + vbackp;

	vfrontp = (mode->vsync_start - mode->vdisplay) * vscan / ilace;

	vblanks = vactive - vfrontp - 1;

	if (mode->flags & DRM_MODE_FLAG_INTERLACE) {

		vblan2e = vactive + vsynce + vbackp;

		vblan2s = vblan2e + (mode->vdisplay * vscan / ilace);

		vactive = (vactive * 2) + 1;

		magic  |= 0x00000001;

	}



	syncs = 0x00000001;

	if (mode->flags & DRM_MODE_FLAG_NHSYNC)

		syncs |= 0x00000008;
@@ -379,20 +393,22 @@ nvd0_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *umode, 


	push = evo_wait(crtc->dev, 0, 64);

	if (push) {

		evo_mthd(push, 0x0410 + (nv_crtc->index * 0x300), 5);

		evo_mthd(push, 0x0410 + (nv_crtc->index * 0x300), 6);

		evo_data(push, 0x00000000);

		evo_data(push, (vtotal << 16) | htotal);

		evo_data(push, (vsyncw << 16) | hsyncw);

		evo_data(push, (vss2be << 16) | hss2be);

		evo_data(push, (vss2de << 16) | hss2de);

		evo_data(push, (vactive << 16) | hactive);

		evo_data(push, ( vsynce << 16) | hsynce);

		evo_data(push, (vblanke << 16) | hblanke);

		evo_data(push, (vblanks << 16) | hblanks);

		evo_data(push, (vblan2e << 16) | vblan2s);

		evo_mthd(push, 0x042c + (nv_crtc->index * 0x300), 1);

		evo_data(push, 0x00000000); /* ??? */

		evo_mthd(push, 0x0450 + (nv_crtc->index * 0x300), 3);

		evo_data(push, mode->clock * 1000);

		evo_data(push, 0x00200000); /* ??? */

		evo_data(push, mode->clock * 1000);

		evo_mthd(push, 0x0404 + (nv_crtc->index * 0x300), 1);

		evo_mthd(push, 0x0404 + (nv_crtc->index * 0x300), 2);

		evo_data(push, syncs);

		evo_data(push, magic);

		evo_kick(push, crtc->dev, 0);

	}