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      1 /*	$NetBSD: amdgpu_virtual_stream_encoder.c,v 1.2 2021/12/18 23:45:06 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2012-15 Advanced Micro Devices, Inc.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the "Software"),
      8  * to deal in the Software without restriction, including without limitation
      9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     10  * and/or sell copies of the Software, and to permit persons to whom the
     11  * Software is furnished to do so, subject to the following conditions:
     12  *
     13  * The above copyright notice and this permission notice shall be included in
     14  * all copies or substantial portions of the Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
     20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     22  * OTHER DEALINGS IN THE SOFTWARE.
     23  *
     24  * Authors: AMD
     25  *
     26  */
     27 
     28 #include <sys/cdefs.h>
     29 __KERNEL_RCSID(0, "$NetBSD: amdgpu_virtual_stream_encoder.c,v 1.2 2021/12/18 23:45:06 riastradh Exp $");
     30 
     31 #include <linux/slab.h>
     32 
     33 #include "dm_services.h"
     34 #include "virtual_stream_encoder.h"
     35 
     36 static void virtual_stream_encoder_dp_set_stream_attribute(
     37 	struct stream_encoder *enc,
     38 	struct dc_crtc_timing *crtc_timing,
     39 	enum dc_color_space output_color_space,
     40 	bool use_vsc_sdp_for_colorimetry,
     41 	uint32_t enable_sdp_splitting) {}
     42 
     43 static void virtual_stream_encoder_hdmi_set_stream_attribute(
     44 	struct stream_encoder *enc,
     45 	struct dc_crtc_timing *crtc_timing,
     46 	int actual_pix_clk_khz,
     47 	bool enable_audio) {}
     48 
     49 static void virtual_stream_encoder_dvi_set_stream_attribute(
     50 	struct stream_encoder *enc,
     51 	struct dc_crtc_timing *crtc_timing,
     52 	bool is_dual_link) {}
     53 
     54 static void virtual_stream_encoder_set_mst_bandwidth(
     55 	struct stream_encoder *enc,
     56 	struct fixed31_32 avg_time_slots_per_mtp) {}
     57 
     58 static void virtual_stream_encoder_update_hdmi_info_packets(
     59 	struct stream_encoder *enc,
     60 	const struct encoder_info_frame *info_frame) {}
     61 
     62 static void virtual_stream_encoder_stop_hdmi_info_packets(
     63 	struct stream_encoder *enc) {}
     64 
     65 static void virtual_stream_encoder_set_avmute(
     66 	struct stream_encoder *enc,
     67 	bool enable) {}
     68 static void virtual_stream_encoder_update_dp_info_packets(
     69 	struct stream_encoder *enc,
     70 	const struct encoder_info_frame *info_frame) {}
     71 
     72 static void virtual_stream_encoder_stop_dp_info_packets(
     73 	struct stream_encoder *enc) {}
     74 
     75 static void virtual_stream_encoder_dp_blank(
     76 	struct stream_encoder *enc) {}
     77 
     78 static void virtual_stream_encoder_dp_unblank(
     79 	struct stream_encoder *enc,
     80 	const struct encoder_unblank_param *param) {}
     81 
     82 static void virtual_audio_mute_control(
     83 	struct stream_encoder *enc,
     84 	bool mute) {}
     85 
     86 static void virtual_stream_encoder_reset_hdmi_stream_attribute(
     87 		struct stream_encoder *enc)
     88 {}
     89 
     90 static void virtual_enc_dp_set_odm_combine(
     91 	struct stream_encoder *enc,
     92 	bool odm_combine)
     93 {}
     94 
     95 static const struct stream_encoder_funcs virtual_str_enc_funcs = {
     96 	.dp_set_odm_combine =
     97 		virtual_enc_dp_set_odm_combine,
     98 	.dp_set_stream_attribute =
     99 		virtual_stream_encoder_dp_set_stream_attribute,
    100 	.hdmi_set_stream_attribute =
    101 		virtual_stream_encoder_hdmi_set_stream_attribute,
    102 	.dvi_set_stream_attribute =
    103 		virtual_stream_encoder_dvi_set_stream_attribute,
    104 	.set_mst_bandwidth =
    105 		virtual_stream_encoder_set_mst_bandwidth,
    106 	.update_hdmi_info_packets =
    107 		virtual_stream_encoder_update_hdmi_info_packets,
    108 	.stop_hdmi_info_packets =
    109 		virtual_stream_encoder_stop_hdmi_info_packets,
    110 	.update_dp_info_packets =
    111 		virtual_stream_encoder_update_dp_info_packets,
    112 	.stop_dp_info_packets =
    113 		virtual_stream_encoder_stop_dp_info_packets,
    114 	.dp_blank =
    115 		virtual_stream_encoder_dp_blank,
    116 	.dp_unblank =
    117 		virtual_stream_encoder_dp_unblank,
    118 
    119 	.audio_mute_control = virtual_audio_mute_control,
    120 	.set_avmute = virtual_stream_encoder_set_avmute,
    121 	.hdmi_reset_stream_attribute = virtual_stream_encoder_reset_hdmi_stream_attribute,
    122 };
    123 
    124 bool virtual_stream_encoder_construct(
    125 	struct stream_encoder *enc,
    126 	struct dc_context *ctx,
    127 	struct dc_bios *bp)
    128 {
    129 	if (!enc)
    130 		return false;
    131 	if (!bp)
    132 		return false;
    133 
    134 	enc->funcs = &virtual_str_enc_funcs;
    135 	enc->ctx = ctx;
    136 	enc->id = ENGINE_ID_VIRTUAL;
    137 	enc->bp = bp;
    138 
    139 	return true;
    140 }
    141 
    142 struct stream_encoder *virtual_stream_encoder_create(
    143 	struct dc_context *ctx, struct dc_bios *bp)
    144 {
    145 	struct stream_encoder *enc = kzalloc(sizeof(*enc), GFP_KERNEL);
    146 
    147 	if (!enc)
    148 		return NULL;
    149 
    150 	if (virtual_stream_encoder_construct(enc, ctx, bp))
    151 		return enc;
    152 
    153 	BREAK_TO_DEBUGGER();
    154 	kfree(enc);
    155 	return NULL;
    156 }
    157 
    158