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 * poll pending down reply
  62 */
  63void dm_helpers_dp_mst_poll_pending_down_reply(
  64        struct dc_context *ctx,
  65        const struct dc_link *link);
  66
  67/*
  68 * Clear payload allocation table before enable MST DP link.
  69 */
  70void dm_helpers_dp_mst_clear_payload_allocation_table(
  71        struct dc_context *ctx,
  72        const struct dc_link *link);
  73
  74/*
  75 * Polls for ACT (allocation change trigger) handled and
  76 */
  77bool dm_helpers_dp_mst_poll_for_allocation_change_trigger(
  78                struct dc_context *ctx,
  79                const struct dc_stream_state *stream);
  80/*
  81 * Sends ALLOCATE_PAYLOAD message.
  82 */
  83bool dm_helpers_dp_mst_send_payload_allocation(
  84                struct dc_context *ctx,
  85                const struct dc_stream_state *stream,
  86                bool enable);
  87
  88bool dm_helpers_dp_mst_start_top_mgr(
  89                struct dc_context *ctx,
  90                const struct dc_link *link,
  91                bool boot);
  92
  93void dm_helpers_dp_mst_stop_top_mgr(
  94                struct dc_context *ctx,
  95                const struct dc_link *link);
  96/**
  97 * OS specific aux read callback.
  98 */
  99bool dm_helpers_dp_read_dpcd(
 100                struct dc_context *ctx,
 101                const struct dc_link *link,
 102                uint32_t address,
 103                uint8_t *data,
 104                uint32_t size);
 105
 106/**
 107 * OS specific aux write callback.
 108 */
 109bool dm_helpers_dp_write_dpcd(
 110                struct dc_context *ctx,
 111                const struct dc_link *link,
 112                uint32_t address,
 113                const uint8_t *data,
 114                uint32_t size);
 115
 116bool dm_helpers_submit_i2c(
 117                struct dc_context *ctx,
 118                const struct dc_link *link,
 119                struct i2c_command *cmd);
 120
 121#ifdef CONFIG_DRM_AMD_DC_DSC_SUPPORT
 122bool dm_helpers_dp_write_dsc_enable(
 123                struct dc_context *ctx,
 124                const struct dc_stream_state *stream,
 125                bool enable
 126);
 127#endif
 128bool dm_helpers_is_dp_sink_present(
 129                struct dc_link *link);
 130
 131enum dc_edid_status dm_helpers_read_local_edid(
 132                struct dc_context *ctx,
 133                struct dc_link *link,
 134                struct dc_sink *sink);
 135
 136void dm_set_dcn_clocks(
 137                struct dc_context *ctx,
 138                struct dc_clocks *clks);
 139
 140#endif /* __DM_HELPERS__ */
 141