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_mst_bandwidth(
  50         struct stream_encoder *enc,
  51         struct fixed31_32 avg_time_slots_per_mtp) {}
  52
  53 static void virtual_stream_encoder_update_hdmi_info_packets(
  54         struct stream_encoder *enc,
  55         const struct encoder_info_frame *info_frame) {}
  56
  57 static void virtual_stream_encoder_stop_hdmi_info_packets(
  58         struct stream_encoder *enc) {}
  59
  60 static void virtual_stream_encoder_set_avmute(
  61         struct stream_encoder *enc,
  62         bool enable) {}
  63 static void virtual_stream_encoder_update_dp_info_packets(
  64         struct stream_encoder *enc,
  65         const struct encoder_info_frame *info_frame) {}
  66
  67 static void virtual_stream_encoder_stop_dp_info_packets(
  68         struct stream_encoder *enc) {}
  69
  70 static void virtual_stream_encoder_dp_blank(
  71         struct stream_encoder *enc) {}
  72
  73 static void virtual_stream_encoder_dp_unblank(
  74         struct stream_encoder *enc,
  75         const struct encoder_unblank_param *param) {}
  76
  77 static void virtual_audio_mute_control(
  78         struct stream_encoder *enc,
  79         bool mute) {}
  80
  81 static void virtual_stream_encoder_reset_hdmi_stream_attribute(
  82                 struct stream_encoder *enc)
  83 {}
  84
  85 static void virtual_enc_dp_set_odm_combine(
  86         struct stream_encoder *enc,
  87         bool odm_combine)
  88 {}
  89
  90 static const struct stream_encoder_funcs virtual_str_enc_funcs = {
  91         .dp_set_odm_combine =
  92                 virtual_enc_dp_set_odm_combine,
  93         .dp_set_stream_attribute =
  94                 virtual_stream_encoder_dp_set_stream_attribute,
  95         .hdmi_set_stream_attribute =
  96                 virtual_stream_encoder_hdmi_set_stream_attribute,
  97         .dvi_set_stream_attribute =
  98                 virtual_stream_encoder_dvi_set_stream_attribute,
  99         .set_mst_bandwidth =
 100                 virtual_stream_encoder_set_mst_bandwidth,
 101         .update_hdmi_info_packets =
 102                 virtual_stream_encoder_update_hdmi_info_packets,
 103         .stop_hdmi_info_packets =
 104                 virtual_stream_encoder_stop_hdmi_info_packets,
 105         .update_dp_info_packets =
 106                 virtual_stream_encoder_update_dp_info_packets,
 107         .stop_dp_info_packets =
 108                 virtual_stream_encoder_stop_dp_info_packets,
 109         .dp_blank =
 110                 virtual_stream_encoder_dp_blank,
 111         .dp_unblank =
 112                 virtual_stream_encoder_dp_unblank,
 113
 114         .audio_mute_control = virtual_audio_mute_control,
 115         .set_avmute = virtual_stream_encoder_set_avmute,
 116         .hdmi_reset_stream_attribute = virtual_stream_encoder_reset_hdmi_stream_attribute,
 117 };
 118
 119 bool virtual_stream_encoder_construct(
 120         struct stream_encoder *enc,
 121         struct dc_context *ctx,
 122         struct dc_bios *bp)
 123 {
 124         if (!enc)
 125                 return false;
 126         if (!bp)
 127                 return false;
 128
 129         enc->funcs = &virtual_str_enc_funcs;
 130         enc->ctx = ctx;
 131         enc->id = ENGINE_ID_VIRTUAL;
 132         enc->bp = bp;
 133
 134         return true;
 135 }
 136
 137 struct stream_encoder *virtual_stream_encoder_create(
 138         struct dc_context *ctx, struct dc_bios *bp)
 139 {
 140         struct stream_encoder *enc = kzalloc(sizeof(*enc), GFP_KERNEL);
 141
 142         if (!enc)
 143                 return NULL;
 144
 145         if (virtual_stream_encoder_construct(enc, ctx, bp))
 146                 return enc;
 147
 148         BREAK_TO_DEBUGGER();
 149         kfree(enc);
 150         return NULL;
 151 }
 152