drm/nouveau: fix regression in vblanking
nv50_vblank_enable/disable got switched from NV50_PDISPLAY_INTR_EN_1_VBLANK_CRTC_0 (4) << head to 1 << head, which is wrong.
4 << head is the correct value.
Fixes regression with vblanking since 1d7c71a3e2
"drm/nouveau/disp: port vblank handling to event interface"
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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@ -544,13 +544,13 @@ nv50_disp_curs_ofuncs = {
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static void
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nv50_disp_base_vblank_enable(struct nouveau_event *event, int head)
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{
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nv_mask(event->priv, 0x61002c, (1 << head), (1 << head));
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nv_mask(event->priv, 0x61002c, (4 << head), (4 << head));
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}
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static void
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nv50_disp_base_vblank_disable(struct nouveau_event *event, int head)
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{
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nv_mask(event->priv, 0x61002c, (1 << head), (0 << head));
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nv_mask(event->priv, 0x61002c, (4 << head), 0);
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}
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static int
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