drivers/gpu/drm/nouveau/dispnv50/dac507d.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 "core.h"
  23
  24 static void
  25 dac507d_ctrl(struct nv50_core *core, int or, u32 ctrl,
  26              struct nv50_head_atom *asyh)
  27 {
  28         u32 *push, sync = 0;
  29         if ((push = evo_wait(&core->chan, 3))) {
  30                 if (asyh) {
  31                         sync |= asyh->or.nvsync << 1;
  32                         sync |= asyh->or.nhsync;
  33                 }
  34                 evo_mthd(push, 0x0400 + (or * 0x080), 2);
  35                 evo_data(push, ctrl);
  36                 evo_data(push, sync);
  37                 evo_kick(push, &core->chan);
  38         }
  39 }
  40
  41 const struct nv50_outp_func
  42 dac507d = {
  43         .ctrl = dac507d_ctrl,
  44 };