drivers/gpu/drm/amd/display/dc/virtual/virtual_stream_encoder.c

   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 #include "dm_services.h"
  27 #include "virtual_stream_encoder.h"
  28
  29 static void virtual_stream_encoder_dp_set_stream_attribute(
  30         struct stream_encoder *enc,
  31         struct dc_crtc_timing *crtc_timing,
  32         enum dc_color_space output_color_space) {}
  33
  34 static void virtual_stream_encoder_hdmi_set_stream_attribute(
  35         struct stream_encoder *enc,
  36         struct dc_crtc_timing *crtc_timing,
  37         int actual_pix_clk_khz,
  38         bool enable_audio) {}
  39
  40 static void virtual_stream_encoder_dvi_set_stream_attribute(
  41         struct stream_encoder *enc,
  42         struct dc_crtc_timing *crtc_timing,
  43         bool is_dual_link) {}
  44
  45 static void virtual_stream_encoder_set_mst_bandwidth(
  46         struct stream_encoder *enc,
  47         struct fixed31_32 avg_time_slots_per_mtp) {}
  48
  49 static void virtual_stream_encoder_update_hdmi_info_packets(
  50         struct stream_encoder *enc,
  51         const struct encoder_info_frame *info_frame) {}
  52
  53 static void virtual_stream_encoder_stop_hdmi_info_packets(
  54         struct stream_encoder *enc) {}
  55
  56 static void virtual_stream_encoder_set_avmute(
  57         struct stream_encoder *enc,
  58         bool enable) {}
  59 static void virtual_stream_encoder_update_dp_info_packets(
  60         struct stream_encoder *enc,
  61         const struct encoder_info_frame *info_frame) {}
  62
  63 static void virtual_stream_encoder_stop_dp_info_packets(
  64         struct stream_encoder *enc) {}
  65
  66 static void virtual_stream_encoder_dp_blank(
  67         struct stream_encoder *enc) {}
  68
  69 static void virtual_stream_encoder_dp_unblank(
  70         struct stream_encoder *enc,
  71         const struct encoder_unblank_param *param) {}
  72
  73 static void virtual_audio_mute_control(
  74         struct stream_encoder *enc,
  75         bool mute) {}
  76
  77 static const struct stream_encoder_funcs virtual_str_enc_funcs = {
  78         .dp_set_stream_attribute =
  79                 virtual_stream_encoder_dp_set_stream_attribute,
  80         .hdmi_set_stream_attribute =
  81                 virtual_stream_encoder_hdmi_set_stream_attribute,
  82         .dvi_set_stream_attribute =
  83                 virtual_stream_encoder_dvi_set_stream_attribute,
  84         .set_mst_bandwidth =
  85                 virtual_stream_encoder_set_mst_bandwidth,
  86         .update_hdmi_info_packets =
  87                 virtual_stream_encoder_update_hdmi_info_packets,
  88         .stop_hdmi_info_packets =
  89                 virtual_stream_encoder_stop_hdmi_info_packets,
  90         .update_dp_info_packets =
  91                 virtual_stream_encoder_update_dp_info_packets,
  92         .stop_dp_info_packets =
  93                 virtual_stream_encoder_stop_dp_info_packets,
  94         .dp_blank =
  95                 virtual_stream_encoder_dp_blank,
  96         .dp_unblank =
  97                 virtual_stream_encoder_dp_unblank,
  98
  99         .audio_mute_control = virtual_audio_mute_control,
 100         .set_avmute = virtual_stream_encoder_set_avmute,
 101 };
 102
 103 bool virtual_stream_encoder_construct(
 104         struct stream_encoder *enc,
 105         struct dc_context *ctx,
 106         struct dc_bios *bp)
 107 {
 108         if (!enc)
 109                 return false;
 110         if (!bp)
 111                 return false;
 112
 113         enc->funcs = &virtual_str_enc_funcs;
 114         enc->ctx = ctx;
 115         enc->id = ENGINE_ID_VIRTUAL;
 116         enc->bp = bp;
 117
 118         return true;
 119 }
 120
 121 struct stream_encoder *virtual_stream_encoder_create(
 122         struct dc_context *ctx, struct dc_bios *bp)
 123 {
 124         struct stream_encoder *enc = kzalloc(sizeof(*enc), GFP_KERNEL);
 125
 126         if (!enc)
 127                 return NULL;
 128
 129         if (virtual_stream_encoder_construct(enc, ctx, bp))
 130                 return enc;
 131
 132         BREAK_TO_DEBUGGER();
 133         kfree(enc);
 134         return NULL;
 135 }
 136