drivers/gpu/drm/nouveau/dispnv50/wimm.c

   1 /*
   2  * Copyright 2018 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 #include "wimm.h"
  23
  24 #include <nvif/class.h>
  25
  26 int
  27 nv50_wimm_init(struct nouveau_drm *drm, struct nv50_wndw *wndw)
  28 {
  29         struct {
  30                 s32 oclass;
  31                 int version;
  32                 int (*init)(struct nouveau_drm *, s32, struct nv50_wndw *);
  33         } wimms[] = {
  34                 { TU102_DISP_WINDOW_IMM_CHANNEL_DMA, 0, wimmc37b_init },
  35                 { GV100_DISP_WINDOW_IMM_CHANNEL_DMA, 0, wimmc37b_init },
  36                 {}
  37         };
  38         struct nv50_disp *disp = nv50_disp(drm->dev);
  39         int cid;
  40
  41         cid = nvif_mclass(&disp->disp->object, wimms);
  42         if (cid < 0) {
  43                 NV_ERROR(drm, "No supported window immediate class\n");
  44                 return cid;
  45         }
  46
  47         return wimms[cid].init(drm, wimms[cid].oclass, wndw);
  48 }