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drm/nvd0/disp: update crtc timing calculations for interlace/doublescan 

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2011-11-11 23:39:22 +10:00
parent f62b27db6b
commit 2d1d898b46
1 changed files with 34 additions and 18 deletions
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52
drivers/gpu/drm/nouveau/nvd0_display.c
View File

@ -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);
}