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 <linux/slab.h>
  27
  28 #include "dm_services.h"
  29 #include "virtual_stream_encoder.h"
  30
  31 static void virtual_stream_encoder_dp_set_stream_attribute(
  32         struct stream_encoder *enc,
  33         struct dc_crtc_timing *crtc_timing,
  34         enum dc_color_space output_color_space,
  35         bool use_vsc_sdp_for_colorimetry,
  36         uint32_t enable_sdp_splitting) {}
  37
  38 static void virtual_stream_encoder_hdmi_set_stream_attribute(
  39         struct stream_encoder *enc,
  40         struct dc_crtc_timing *crtc_timing,
  41         int actual_pix_clk_khz,
  42         bool enable_audio) {}
  43
  44 static void virtual_stream_encoder_dvi_set_stream_attribute(
  45         struct stream_encoder *enc,
  46         struct dc_crtc_timing *crtc_timing,
  47         bool is_dual_link) {}
  48
  49 static void virtual_stream_encoder_set_throttled_vcp_size(
  50         struct stream_encoder *enc,
  51         struct fixed31_32 avg_time_slots_per_mtp)
  52 {}
  53
  54 static void virtual_stream_encoder_update_hdmi_info_packets(
  55         struct stream_encoder *enc,
  56         const struct encoder_info_frame *info_frame) {}
  57
  58 static void virtual_stream_encoder_stop_hdmi_info_packets(
  59         struct stream_encoder *enc) {}
  60
  61 static void virtual_stream_encoder_set_avmute(
  62         struct stream_encoder *enc,
  63         bool enable) {}
  64 static void virtual_stream_encoder_update_dp_info_packets(
  65         struct stream_encoder *enc,
  66         const struct encoder_info_frame *info_frame) {}
  67
  68 static void virtual_stream_encoder_stop_dp_info_packets(
  69         struct stream_encoder *enc) {}
  70
  71 static void virtual_stream_encoder_dp_blank(
  72         struct stream_encoder *enc) {}
  73
  74 static void virtual_stream_encoder_dp_unblank(
  75         struct stream_encoder *enc,
  76         const struct encoder_unblank_param *param) {}
  77
  78 static void virtual_audio_mute_control(
  79         struct stream_encoder *enc,
  80         bool mute) {}
  81
  82 static void virtual_stream_encoder_reset_hdmi_stream_attribute(
  83                 struct stream_encoder *enc)
  84 {}
  85
  86 static void virtual_enc_dp_set_odm_combine(
  87         struct stream_encoder *enc,
  88         bool odm_combine)
  89 {}
  90
  91 static void virtual_dig_connect_to_otg(
  92                 struct stream_encoder *enc,
  93                 int tg_inst)
  94 {}
  95
  96 static void virtual_setup_stereo_sync(
  97                         struct stream_encoder *enc,
  98                         int tg_inst,
  99                         bool enable)
 100 {}
 101
 102 static void virtual_stream_encoder_set_dsc_pps_info_packet(
 103                 struct stream_encoder *enc,
 104                 bool enable,
 105                 uint8_t *dsc_packed_pps)
 106 {}
 107
 108 static const struct stream_encoder_funcs virtual_str_enc_funcs = {
 109         .dp_set_odm_combine =
 110                 virtual_enc_dp_set_odm_combine,
 111         .dp_set_stream_attribute =
 112                 virtual_stream_encoder_dp_set_stream_attribute,
 113         .hdmi_set_stream_attribute =
 114                 virtual_stream_encoder_hdmi_set_stream_attribute,
 115         .dvi_set_stream_attribute =
 116                 virtual_stream_encoder_dvi_set_stream_attribute,
 117         .set_throttled_vcp_size =
 118                 virtual_stream_encoder_set_throttled_vcp_size,
 119         .update_hdmi_info_packets =
 120                 virtual_stream_encoder_update_hdmi_info_packets,
 121         .stop_hdmi_info_packets =
 122                 virtual_stream_encoder_stop_hdmi_info_packets,
 123         .update_dp_info_packets =
 124                 virtual_stream_encoder_update_dp_info_packets,
 125         .stop_dp_info_packets =
 126                 virtual_stream_encoder_stop_dp_info_packets,
 127         .dp_blank =
 128                 virtual_stream_encoder_dp_blank,
 129         .dp_unblank =
 130                 virtual_stream_encoder_dp_unblank,
 131
 132         .audio_mute_control = virtual_audio_mute_control,
 133         .set_avmute = virtual_stream_encoder_set_avmute,
 134         .hdmi_reset_stream_attribute = virtual_stream_encoder_reset_hdmi_stream_attribute,
 135         .dig_connect_to_otg = virtual_dig_connect_to_otg,
 136         .setup_stereo_sync = virtual_setup_stereo_sync,
 137         .dp_set_dsc_pps_info_packet = virtual_stream_encoder_set_dsc_pps_info_packet,
 138 };
 139
 140 bool virtual_stream_encoder_construct(
 141         struct stream_encoder *enc,
 142         struct dc_context *ctx,
 143         struct dc_bios *bp)
 144 {
 145         if (!enc)
 146                 return false;
 147         if (!bp)
 148                 return false;
 149
 150         enc->funcs = &virtual_str_enc_funcs;
 151         enc->ctx = ctx;
 152         enc->id = ENGINE_ID_VIRTUAL;
 153         enc->bp = bp;
 154
 155         return true;
 156 }
 157
 158 struct stream_encoder *virtual_stream_encoder_create(
 159         struct dc_context *ctx, struct dc_bios *bp)
 160 {
 161         struct stream_encoder *enc = kzalloc(sizeof(*enc), GFP_KERNEL);
 162
 163         if (!enc)
 164                 return NULL;
 165
 166         if (virtual_stream_encoder_construct(enc, ctx, bp))
 167                 return enc;
 168
 169         BREAK_TO_DEBUGGER();
 170         kfree(enc);
 171         return NULL;
 172 }
 173