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

   1/*
   2 * Copyright 2020 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#include "dmub_outbox.h"
  26#include "dc_dmub_srv.h"
  27#include "dmub/inc/dmub_cmd.h"
  28
  29/**
  30 *  dmub_enable_outbox_notification - Sends inbox cmd to dmub to enable outbox1
  31 *                                    messages with interrupt. Dmub sends outbox1
  32 *                                    message and triggers outbox1 interrupt.
  33 * @dc: dc structure
  34 */
  35void dmub_enable_outbox_notification(struct dc *dc)
  36{
  37        union dmub_rb_cmd cmd;
  38        struct dc_context *dc_ctx = dc->ctx;
  39
  40        memset(&cmd, 0x0, sizeof(cmd));
  41        cmd.outbox1_enable.header.type = DMUB_CMD__OUTBOX1_ENABLE;
  42        cmd.outbox1_enable.header.sub_type = 0;
  43        cmd.outbox1_enable.header.payload_bytes =
  44                sizeof(cmd.outbox1_enable) -
  45                sizeof(cmd.outbox1_enable.header);
  46        cmd.outbox1_enable.enable = true;
  47
  48        dc_dmub_srv_cmd_queue(dc_ctx->dmub_srv, &cmd);
  49        dc_dmub_srv_cmd_execute(dc_ctx->dmub_srv);
  50        dc_dmub_srv_wait_idle(dc_ctx->dmub_srv);
  51}
  52