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drm/nvd0/disp: enable support for older display classes 

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2012-11-16 11:44:14 +10:00
parent 47057302f0
commit 63718a0730
1 changed files with 10 additions and 1 deletions
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11
drivers/gpu/drm/nouveau/nvd0_display.c
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@ -1896,6 +1896,11 @@ nvd0_display_create(struct drm_device *dev)
static const u16 oclass[] = {
NVE0_DISP_CLASS,
NVD0_DISP_CLASS,
NVA3_DISP_CLASS,
NV94_DISP_CLASS,
NVA0_DISP_CLASS,
NV84_DISP_CLASS,
NV50_DISP_CLASS,
};
struct nouveau_device *device = nouveau_dev(dev);
struct nouveau_drm *drm = nouveau_drm(dev);
@ -1949,7 +1954,11 @@ nvd0_display_create(struct drm_device *dev)
goto out;
/* create crtc objects to represent the hw heads */
crtcs = nv_rd32(device, 0x022448);
if (nv_mclass(disp->core) >= NVD0_DISP_CLASS)
crtcs = nv_rd32(device, 0x022448);
else
crtcs = 2;
for (i = 0; i < crtcs; i++) {
ret = nvd0_crtc_create(dev, disp->core, i);
if (ret)