drivers/gpu/drm/nouveau/core/engine/disp/nv04.c

   1 /*
   2  * Copyright 2012 Red Hat Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * Authors: Ben Skeggs
  23  */
  24
  25 #include <engine/disp.h>
  26
  27 #include <core/event.h>
  28 #include <core/class.h>
  29
  30 struct nv04_disp_priv {
  31         struct nouveau_disp base;
  32 };
  33
  34 static struct nouveau_oclass
  35 nv04_disp_sclass[] = {
  36         { NV04_DISP_CLASS, &nouveau_object_ofuncs },
  37         {},
  38 };
  39
  40 /*******************************************************************************
  41  * Display engine implementation
  42  ******************************************************************************/
  43
  44 static void
  45 nv04_disp_vblank_enable(struct nouveau_event *event, int head)
  46 {
  47         nv_wr32(event->priv, 0x600140 + (head * 0x2000) , 0x00000001);
  48 }
  49
  50 static void
  51 nv04_disp_vblank_disable(struct nouveau_event *event, int head)
  52 {
  53         nv_wr32(event->priv, 0x600140 + (head * 0x2000) , 0x00000000);
  54 }
  55
  56 static void
  57 nv04_disp_intr(struct nouveau_subdev *subdev)
  58 {
  59         struct nv04_disp_priv *priv = (void *)subdev;
  60         u32 crtc0 = nv_rd32(priv, 0x600100);
  61         u32 crtc1 = nv_rd32(priv, 0x602100);
  62
  63         if (crtc0 & 0x00000001) {
  64                 nouveau_event_trigger(priv->base.vblank, 0);
  65                 nv_wr32(priv, 0x600100, 0x00000001);
  66         }
  67
  68         if (crtc1 & 0x00000001) {
  69                 nouveau_event_trigger(priv->base.vblank, 1);
  70                 nv_wr32(priv, 0x602100, 0x00000001);
  71         }
  72 }
  73
  74 static int
  75 nv04_disp_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
  76                struct nouveau_oclass *oclass, void *data, u32 size,
  77                struct nouveau_object **pobject)
  78 {
  79         struct nv04_disp_priv *priv;
  80         int ret;
  81
  82         ret = nouveau_disp_create(parent, engine, oclass, 2, "DISPLAY",
  83                                   "display", &priv);
  84         *pobject = nv_object(priv);
  85         if (ret)
  86                 return ret;
  87
  88         nv_engine(priv)->sclass = nv04_disp_sclass;
  89         nv_subdev(priv)->intr = nv04_disp_intr;
  90         priv->base.vblank->priv = priv;
  91         priv->base.vblank->enable = nv04_disp_vblank_enable;
  92         priv->base.vblank->disable = nv04_disp_vblank_disable;
  93         return 0;
  94 }
  95
  96 struct nouveau_oclass
  97 nv04_disp_oclass = {
  98         .handle = NV_ENGINE(DISP, 0x04),
  99         .ofuncs = &(struct nouveau_ofuncs) {
 100                 .ctor = nv04_disp_ctor,
 101                 .dtor = _nouveau_disp_dtor,
 102                 .init = _nouveau_disp_init,
 103                 .fini = _nouveau_disp_fini,
 104         },
 105 };