mirror of https://gitee.com/openkylin/linux.git
drm/nv50/kms: Set VBLANK time in modeset script
Solves blinking on reclocking memory. The value set is an underestimate, but with non-reduced vblanking this should give us plenty of time Signed-off-by: Roy Spliet <rspliet@eclipso.eu> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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2a7fa6744c
commit
1dce626404
drivers/gpu/drm/nouveau
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@ -1066,7 +1066,7 @@ nv50_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *umode,
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u32 vscan = (mode->flags & DRM_MODE_FLAG_DBLSCAN) ? 2 : 1;
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u32 hactive, hsynce, hbackp, hfrontp, hblanke, hblanks;
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u32 vactive, vsynce, vbackp, vfrontp, vblanke, vblanks;
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u32 vblan2e = 0, vblan2s = 1;
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u32 vblan2e = 0, vblan2s = 1, vblankus = 0;
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u32 *push;
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int ret;
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@ -1083,6 +1083,11 @@ nv50_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *umode,
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vblanke = vsynce + vbackp;
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vfrontp = (mode->vsync_start - mode->vdisplay) * vscan / ilace;
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vblanks = vactive - vfrontp - 1;
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/* XXX: Safe underestimate, even "0" works */
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vblankus = (vactive - mode->vdisplay - 2) * hactive;
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vblankus *= 1000;
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vblankus /= mode->clock;
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if (mode->flags & DRM_MODE_FLAG_INTERLACE) {
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vblan2e = vactive + vsynce + vbackp;
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vblan2s = vblan2e + (mode->vdisplay * vscan / ilace);
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@ -1099,14 +1104,14 @@ nv50_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *umode,
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evo_mthd(push, 0x0804 + (nv_crtc->index * 0x400), 2);
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evo_data(push, 0x00800000 | mode->clock);
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evo_data(push, (ilace == 2) ? 2 : 0);
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evo_mthd(push, 0x0810 + (nv_crtc->index * 0x400), 6);
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evo_mthd(push, 0x0810 + (nv_crtc->index * 0x400), 8);
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evo_data(push, 0x00000000);
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evo_data(push, (vactive << 16) | hactive);
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evo_data(push, ( vsynce << 16) | hsynce);
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evo_data(push, (vblanke << 16) | hblanke);
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evo_data(push, (vblanks << 16) | hblanks);
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evo_data(push, (vblan2e << 16) | vblan2s);
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evo_mthd(push, 0x082c + (nv_crtc->index * 0x400), 1);
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evo_data(push, vblankus);
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evo_data(push, 0x00000000);
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evo_mthd(push, 0x0900 + (nv_crtc->index * 0x400), 2);
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evo_data(push, 0x00000311);
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