#include "nouveau_fence.h"
 
 #include <core/gpuobj.h>
+#include <core/class.h>
+
 #include <subdev/timer.h>
 
 static void nv50_display_bh(unsigned long);
        struct nouveau_device *device = nouveau_dev(dev);
        struct nouveau_channel *evo;
        int ret, i;
-       u32 val;
-
-       nv_wr32(device, 0x00610184, nv_rd32(device, 0x00614004));
-
-       /*
-        * I think the 0x006101XX range is some kind of main control area
-        * that enables things.
-        */
-       /* CRTC? */
-       for (i = 0; i < 2; i++) {
-               val = nv_rd32(device, 0x00616100 + (i * 0x800));
-               nv_wr32(device, 0x00610190 + (i * 0x10), val);
-               val = nv_rd32(device, 0x00616104 + (i * 0x800));
-               nv_wr32(device, 0x00610194 + (i * 0x10), val);
-               val = nv_rd32(device, 0x00616108 + (i * 0x800));
-               nv_wr32(device, 0x00610198 + (i * 0x10), val);
-               val = nv_rd32(device, 0x0061610c + (i * 0x800));
-               nv_wr32(device, 0x0061019c + (i * 0x10), val);
-       }
-
-       /* DAC */
-       for (i = 0; i < 3; i++) {
-               val = nv_rd32(device, 0x0061a000 + (i * 0x800));
-               nv_wr32(device, 0x006101d0 + (i * 0x04), val);
-       }
-
-       /* SOR */
-       for (i = 0; i < nv50_sor_nr(dev); i++) {
-               val = nv_rd32(device, 0x0061c000 + (i * 0x800));
-               nv_wr32(device, 0x006101e0 + (i * 0x04), val);
-       }
-
-       /* EXT */
-       for (i = 0; i < 3; i++) {
-               val = nv_rd32(device, 0x0061e000 + (i * 0x800));
-               nv_wr32(device, 0x006101f0 + (i * 0x04), val);
-       }
 
        for (i = 0; i < 3; i++) {
                nv_wr32(device, NV50_PDISPLAY_DAC_DPMS_CTRL(i), 0x00550000 |
                nv_wr32(device, NV50_PDISPLAY_DAC_CLK_CTRL1(i), 0x00000001);
        }
 
-       /* The precise purpose is unknown, i suspect it has something to do
-        * with text mode.
-        */
-       if (nv_rd32(device, NV50_PDISPLAY_INTR_1) & 0x100) {
-               nv_wr32(device, NV50_PDISPLAY_INTR_1, 0x100);
-               nv_wr32(device, 0x006194e8, nv_rd32(device, 0x006194e8) & ~1);
-               if (!nv_wait(device, 0x006194e8, 2, 0)) {
-                       NV_ERROR(drm, "timeout: (0x6194e8 & 2) != 0\n");
-                       NV_ERROR(drm, "0x6194e8 = 0x%08x\n",
-                                               nv_rd32(device, 0x6194e8));
-                       return -EBUSY;
-               }
-       }
-
        for (i = 0; i < 2; i++) {
                nv_wr32(device, NV50_PDISPLAY_CURSOR_CURSOR_CTRL2(i), 0x2000);
                if (!nv_wait(device, NV50_PDISPLAY_CURSOR_CURSOR_CTRL2(i),
                }
        }
 
-       nv_wr32(device, NV50_PDISPLAY_PIO_CTRL, 0x00000000);
-       nv_mask(device, NV50_PDISPLAY_INTR_0, 0x00000000, 0x00000000);
-       nv_wr32(device, NV50_PDISPLAY_INTR_EN_0, 0x00000000);
-       nv_mask(device, NV50_PDISPLAY_INTR_1, 0x00000000, 0x00000000);
-       nv_wr32(device, NV50_PDISPLAY_INTR_EN_1,
-                    NV50_PDISPLAY_INTR_EN_1_CLK_UNK10 |
-                    NV50_PDISPLAY_INTR_EN_1_CLK_UNK20 |
-                    NV50_PDISPLAY_INTR_EN_1_CLK_UNK40);
-
        ret = nv50_evo_init(dev);
        if (ret)
                return ret;
        evo = nv50_display(dev)->master;
 
-       nv_wr32(device, NV50_PDISPLAY_OBJECTS, (nv50_display(dev)->ramin->addr >> 8) | 9);
-
        ret = RING_SPACE(evo, 3);
        if (ret)
                return ret;
                                  nv_rd32(device, NV50_PDISPLAY_SOR_DPMS_STATE(i)));
                }
        }
-
-       /* disable interrupts. */
-       nv_wr32(device, NV50_PDISPLAY_INTR_EN_1, 0x00000000);
 }
 
 int
 nv50_display_create(struct drm_device *dev)
 {
+       static const u16 oclass[] = {
+               NVA3_DISP_CLASS,
+               NV94_DISP_CLASS,
+               NVA0_DISP_CLASS,
+               NV84_DISP_CLASS,
+               NV50_DISP_CLASS,
+       };
        struct nouveau_drm *drm = nouveau_drm(dev);
        struct dcb_table *dcb = &drm->vbios.dcb;
        struct drm_connector *connector, *ct;
        nouveau_display(dev)->init = nv50_display_init;
        nouveau_display(dev)->fini = nv50_display_fini;
 
+       /* attempt to allocate a supported evo display class */
+       ret = -ENODEV;
+       for (i = 0; ret && i < ARRAY_SIZE(oclass); i++) {
+               ret = nouveau_object_new(nv_object(drm), NVDRM_DEVICE,
+                                        0xd1500000, oclass[i], NULL, 0,
+                                        &priv->core);
+       }
+
+       if (ret)
+               return ret;
+
        /* Create CRTC objects */
        for (i = 0; i < 2; i++) {
                ret = nv50_crtc_create(dev, i);