linux/drivers/gpu/drm/nouveau/dispnv50/wimm.c
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   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
  26int
  27nv50_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                { GA102_DISP_WINDOW_IMM_CHANNEL_DMA, 0, wimmc37b_init },
  35                { TU102_DISP_WINDOW_IMM_CHANNEL_DMA, 0, wimmc37b_init },
  36                { GV100_DISP_WINDOW_IMM_CHANNEL_DMA, 0, wimmc37b_init },
  37                {}
  38        };
  39        struct nv50_disp *disp = nv50_disp(drm->dev);
  40        int cid;
  41
  42        cid = nvif_mclass(&disp->disp->object, wimms);
  43        if (cid < 0) {
  44                NV_ERROR(drm, "No supported window immediate class\n");
  45                return cid;
  46        }
  47
  48        return wimms[cid].init(drm, wimms[cid].oclass, wndw);
  49}
  50