LXR linux/drivers/gpu/drm/amd/display/dc/dm

   1/*
   2 * Copyright 2012-15 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/**
  27 * This file defines helper functions provided by the Display Manager to
  28 * Display Core.
  29 */
  30#ifndef __DM_HELPERS__
  31#define __DM_HELPERS__
  32
  33#include "dc_types.h"
  34#include "dc.h"
  35
  36struct dp_mst_stream_allocation_table;
  37
  38enum dc_edid_status dm_helpers_parse_edid_caps(
  39        struct dc_context *ctx,
  40        const struct dc_edid *edid,
  41        struct dc_edid_caps *edid_caps);
  42
  43
  44/*
  45 * Update DP branch info
  46 */
  47void dm_helpers_dp_update_branch_info(
  48                struct dc_context *ctx,
  49                const struct dc_link *link);
  50
  51/*
  52 * Writes payload allocation table in immediate downstream device.
  53 */
  54bool dm_helpers_dp_mst_write_payload_allocation_table(
  55                struct dc_context *ctx,
  56                const struct dc_stream_state *stream,
  57                struct dp_mst_stream_allocation_table *proposed_table,
  58                bool enable);
  59
  60/*
  61 * Clear payload allocation table before enable MST DP link.
  62 */
  63void dm_helpers_dp_mst_clear_payload_allocation_table(
  64        struct dc_context *ctx,
  65        const struct dc_link *link);
  66
  67/*
  68 * Polls for ACT (allocation change trigger) handled and
  69 */
  70bool dm_helpers_dp_mst_poll_for_allocation_change_trigger(
  71                struct dc_context *ctx,
  72                const struct dc_stream_state *stream);
  73/*
  74 * Sends ALLOCATE_PAYLOAD message.
  75 */
  76bool dm_helpers_dp_mst_send_payload_allocation(
  77                struct dc_context *ctx,
  78                const struct dc_stream_state *stream,
  79                bool enable);
  80
  81bool dm_helpers_dp_mst_start_top_mgr(
  82                struct dc_context *ctx,
  83                const struct dc_link *link,
  84                bool boot);
  85
  86void dm_helpers_dp_mst_stop_top_mgr(
  87                struct dc_context *ctx,
  88                const struct dc_link *link);
  89/**
  90 * OS specific aux read callback.
  91 */
  92bool dm_helpers_dp_read_dpcd(
  93                struct dc_context *ctx,
  94                const struct dc_link *link,
  95                uint32_t address,
  96                uint8_t *data,
  97                uint32_t size);
  98
  99/**
 100 * OS specific aux write callback.
 101 */
 102bool dm_helpers_dp_write_dpcd(
 103                struct dc_context *ctx,
 104                const struct dc_link *link,
 105                uint32_t address,
 106                const uint8_t *data,
 107                uint32_t size);
 108
 109bool dm_helpers_submit_i2c(
 110                struct dc_context *ctx,
 111                const struct dc_link *link,
 112                struct i2c_command *cmd);
 113
 114bool dm_helpers_is_dp_sink_present(
 115                struct dc_link *link);
 116
 117enum dc_edid_status dm_helpers_read_local_edid(
 118                struct dc_context *ctx,
 119                struct dc_link *link,
 120                struct dc_sink *sink);
 121
 122void dm_set_dcn_clocks(
 123                struct dc_context *ctx,
 124                struct dc_clocks *clks);
 125
 126#endif /* __DM_HELPERS__ */
 127