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         uint32_t enable_sdp_splitting) {}
  36
  37 static void virtual_stream_encoder_hdmi_set_stream_attribute(
  38         struct stream_encoder *enc,
  39         struct dc_crtc_timing *crtc_timing,
  40         int actual_pix_clk_khz,
  41         bool enable_audio) {}
  42
  43 static void virtual_stream_encoder_dvi_set_stream_attribute(
  44         struct stream_encoder *enc,
  45         struct dc_crtc_timing *crtc_timing,
  46         bool is_dual_link) {}
  47
  48 static void virtual_stream_encoder_set_mst_bandwidth(
  49         struct stream_encoder *enc,
  50         struct fixed31_32 avg_time_slots_per_mtp) {}
  51
  52 static void virtual_stream_encoder_update_hdmi_info_packets(
  53         struct stream_encoder *enc,
  54         const struct encoder_info_frame *info_frame) {}
  55
  56 static void virtual_stream_encoder_stop_hdmi_info_packets(
  57         struct stream_encoder *enc) {}
  58
  59 static void virtual_stream_encoder_set_avmute(
  60         struct stream_encoder *enc,
  61         bool enable) {}
  62 static void virtual_stream_encoder_update_dp_info_packets(
  63         struct stream_encoder *enc,
  64         const struct encoder_info_frame *info_frame) {}
  65
  66 static void virtual_stream_encoder_stop_dp_info_packets(
  67         struct stream_encoder *enc) {}
  68
  69 static void virtual_stream_encoder_dp_blank(
  70         struct stream_encoder *enc) {}
  71
  72 static void virtual_stream_encoder_dp_unblank(
  73         struct stream_encoder *enc,
  74         const struct encoder_unblank_param *param) {}
  75
  76 static void virtual_audio_mute_control(
  77         struct stream_encoder *enc,
  78         bool mute) {}
  79
  80 static void virtual_stream_encoder_reset_hdmi_stream_attribute(
  81                 struct stream_encoder *enc)
  82 {}
  83
  84 #ifdef CONFIG_DRM_AMD_DC_DCN2_0
  85 #ifdef CONFIG_DRM_AMD_DC_DSC_SUPPORT
  86 static void virtual_enc_dp_set_odm_combine(
  87         struct stream_encoder *enc,
  88         bool odm_combine)
  89 {}
  90 #endif
  91 #endif
  92
  93 static const struct stream_encoder_funcs virtual_str_enc_funcs = {
  94 #ifdef CONFIG_DRM_AMD_DC_DCN2_0
  95 #ifdef CONFIG_DRM_AMD_DC_DSC_SUPPORT
  96         .dp_set_odm_combine =
  97                 virtual_enc_dp_set_odm_combine,
  98 #endif
  99 #endif
 100         .dp_set_stream_attribute =
 101                 virtual_stream_encoder_dp_set_stream_attribute,
 102         .hdmi_set_stream_attribute =
 103                 virtual_stream_encoder_hdmi_set_stream_attribute,
 104         .dvi_set_stream_attribute =
 105                 virtual_stream_encoder_dvi_set_stream_attribute,
 106         .set_mst_bandwidth =
 107                 virtual_stream_encoder_set_mst_bandwidth,
 108         .update_hdmi_info_packets =
 109                 virtual_stream_encoder_update_hdmi_info_packets,
 110         .stop_hdmi_info_packets =
 111                 virtual_stream_encoder_stop_hdmi_info_packets,
 112         .update_dp_info_packets =
 113                 virtual_stream_encoder_update_dp_info_packets,
 114         .stop_dp_info_packets =
 115                 virtual_stream_encoder_stop_dp_info_packets,
 116         .dp_blank =
 117                 virtual_stream_encoder_dp_blank,
 118         .dp_unblank =
 119                 virtual_stream_encoder_dp_unblank,
 120
 121         .audio_mute_control = virtual_audio_mute_control,
 122         .set_avmute = virtual_stream_encoder_set_avmute,
 123         .hdmi_reset_stream_attribute = virtual_stream_encoder_reset_hdmi_stream_attribute,
 124 };
 125
 126 bool virtual_stream_encoder_construct(
 127         struct stream_encoder *enc,
 128         struct dc_context *ctx,
 129         struct dc_bios *bp)
 130 {
 131         if (!enc)
 132                 return false;
 133         if (!bp)
 134                 return false;
 135
 136         enc->funcs = &virtual_str_enc_funcs;
 137         enc->ctx = ctx;
 138         enc->id = ENGINE_ID_VIRTUAL;
 139         enc->bp = bp;
 140
 141         return true;
 142 }
 143
 144 struct stream_encoder *virtual_stream_encoder_create(
 145         struct dc_context *ctx, struct dc_bios *bp)
 146 {
 147         struct stream_encoder *enc = kzalloc(sizeof(*enc), GFP_KERNEL);
 148
 149         if (!enc)
 150                 return NULL;
 151
 152         if (virtual_stream_encoder_construct(enc, ctx, bp))
 153                 return enc;
 154
 155         BREAK_TO_DEBUGGER();
 156         kfree(enc);
 157         return NULL;
 158 }
 159