LXR linux/drivers/gpu/drm/amd/display/dc/dce/dmub_hw_lock

   1/*
   2 * Copyright 2019 Advanced Micro Devices, 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: AMD
  23 *
  24 */
  25
  26#include "dmub_hw_lock_mgr.h"
  27#include "dc_dmub_srv.h"
  28#include "dc_types.h"
  29#include "core_types.h"
  30
  31void dmub_hw_lock_mgr_cmd(struct dc_dmub_srv *dmub_srv,
  32                                bool lock,
  33                                union dmub_hw_lock_flags *hw_locks,
  34                                struct dmub_hw_lock_inst_flags *inst_flags)
  35{
  36        union dmub_rb_cmd cmd;
  37
  38        memset(&cmd, 0, sizeof(cmd));
  39        cmd.lock_hw.header.type = DMUB_CMD__HW_LOCK;
  40        cmd.lock_hw.header.sub_type = 0;
  41        cmd.lock_hw.header.payload_bytes = sizeof(struct dmub_cmd_lock_hw_data);
  42        cmd.lock_hw.lock_hw_data.client = HW_LOCK_CLIENT_DRIVER;
  43        cmd.lock_hw.lock_hw_data.lock = lock;
  44        cmd.lock_hw.lock_hw_data.hw_locks.u8All = hw_locks->u8All;
  45        memcpy(&cmd.lock_hw.lock_hw_data.inst_flags, inst_flags, sizeof(struct dmub_hw_lock_inst_flags));
  46
  47        if (!lock)
  48                cmd.lock_hw.lock_hw_data.should_release = 1;
  49
  50        dc_dmub_srv_cmd_queue(dmub_srv, &cmd);
  51        dc_dmub_srv_cmd_execute(dmub_srv);
  52        dc_dmub_srv_wait_idle(dmub_srv);
  53}
  54
  55void dmub_hw_lock_mgr_inbox0_cmd(struct dc_dmub_srv *dmub_srv,
  56                union dmub_inbox0_cmd_lock_hw hw_lock_cmd)
  57{
  58        union dmub_inbox0_data_register data = { 0 };
  59        data.inbox0_cmd_lock_hw = hw_lock_cmd;
  60        dc_dmub_srv_send_inbox0_cmd(dmub_srv, data);
  61}
  62
  63bool should_use_dmub_lock(struct dc_link *link)
  64{
  65        return false;
  66}
  67