LXR linux/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
  30struct nv04_disp_priv {
  31        struct nouveau_disp base;
  32};
  33
  34static struct nouveau_oclass
  35nv04_disp_sclass[] = {
  36        { NV04_DISP_CLASS, &nouveau_object_ofuncs },
  37        {},
  38};
  39
  40/*******************************************************************************
  41 * Display engine implementation
  42 ******************************************************************************/
  43
  44static void
  45nv04_disp_vblank_enable(struct nouveau_event *event, int head)
  46{
  47        nv_wr32(event->priv, 0x600140 + (head * 0x2000) , 0x00000001);
  48}
  49
  50static void
  51nv04_disp_vblank_disable(struct nouveau_event *event, int head)
  52{
  53        nv_wr32(event->priv, 0x600140 + (head * 0x2000) , 0x00000000);
  54}
  55
  56static void
  57nv04_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
  74static int
  75nv04_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
  96struct nouveau_oclass
  97nv04_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};
 106