1 /*
2  * Copyright 2023 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 #include "link_hwss_dio.h"
26 #include "link_hwss_dio_fixed_vs_pe_retimer.h"
27 #include "link_enc_cfg.h"
28 
dp_dio_fixed_vs_pe_retimer_lane_cfg_to_hw_cfg(struct dc_link * link)29 uint8_t dp_dio_fixed_vs_pe_retimer_lane_cfg_to_hw_cfg(struct dc_link *link)
30 {
31 	// TODO: Get USB-C cable orientation
32 	if (link->cur_link_settings.lane_count == LANE_COUNT_FOUR)
33 		return 0xF2;
34 	else
35 		return 0x12;
36 }
37 
dp_dio_fixed_vs_pe_retimer_exit_manual_automation(struct dc_link * link)38 void dp_dio_fixed_vs_pe_retimer_exit_manual_automation(struct dc_link *link)
39 {
40 	const uint8_t dp_type = dp_dio_fixed_vs_pe_retimer_lane_cfg_to_hw_cfg(link);
41 	const uint8_t vendor_lttpr_exit_manual_automation_0[4] = {0x1, 0x11, 0x0, 0x06};
42 	const uint8_t vendor_lttpr_exit_manual_automation_1[4] = {0x1, 0x50, dp_type, 0x0};
43 	const uint8_t vendor_lttpr_exit_manual_automation_2[4] = {0x1, 0x50, 0x50, 0x0};
44 	const uint8_t vendor_lttpr_exit_manual_automation_3[4] = {0x1, 0x51, 0x50, 0x0};
45 	const uint8_t vendor_lttpr_exit_manual_automation_4[4] = {0x1, 0x10, 0x58, 0x0};
46 	const uint8_t vendor_lttpr_exit_manual_automation_5[4] = {0x1, 0x10, 0x59, 0x0};
47 	const uint8_t vendor_lttpr_exit_manual_automation_6[4] = {0x1, 0x30, 0x51, 0x0};
48 	const uint8_t vendor_lttpr_exit_manual_automation_7[4] = {0x1, 0x30, 0x52, 0x0};
49 	const uint8_t vendor_lttpr_exit_manual_automation_8[4] = {0x1, 0x30, 0x54, 0x0};
50 	const uint8_t vendor_lttpr_exit_manual_automation_9[4] = {0x1, 0x30, 0x55, 0x0};
51 
52 	link->dc->link_srv->configure_fixed_vs_pe_retimer(link->ddc,
53 			&vendor_lttpr_exit_manual_automation_0[0], sizeof(vendor_lttpr_exit_manual_automation_0));
54 	link->dc->link_srv->configure_fixed_vs_pe_retimer(link->ddc,
55 			&vendor_lttpr_exit_manual_automation_1[0], sizeof(vendor_lttpr_exit_manual_automation_1));
56 	link->dc->link_srv->configure_fixed_vs_pe_retimer(link->ddc,
57 			&vendor_lttpr_exit_manual_automation_2[0], sizeof(vendor_lttpr_exit_manual_automation_2));
58 	link->dc->link_srv->configure_fixed_vs_pe_retimer(link->ddc,
59 			&vendor_lttpr_exit_manual_automation_3[0], sizeof(vendor_lttpr_exit_manual_automation_3));
60 	link->dc->link_srv->configure_fixed_vs_pe_retimer(link->ddc,
61 			&vendor_lttpr_exit_manual_automation_4[0], sizeof(vendor_lttpr_exit_manual_automation_4));
62 	link->dc->link_srv->configure_fixed_vs_pe_retimer(link->ddc,
63 			&vendor_lttpr_exit_manual_automation_5[0], sizeof(vendor_lttpr_exit_manual_automation_5));
64 	link->dc->link_srv->configure_fixed_vs_pe_retimer(link->ddc,
65 			&vendor_lttpr_exit_manual_automation_6[0], sizeof(vendor_lttpr_exit_manual_automation_6));
66 	link->dc->link_srv->configure_fixed_vs_pe_retimer(link->ddc,
67 			&vendor_lttpr_exit_manual_automation_7[0], sizeof(vendor_lttpr_exit_manual_automation_7));
68 	link->dc->link_srv->configure_fixed_vs_pe_retimer(link->ddc,
69 			&vendor_lttpr_exit_manual_automation_8[0], sizeof(vendor_lttpr_exit_manual_automation_8));
70 	link->dc->link_srv->configure_fixed_vs_pe_retimer(link->ddc,
71 			&vendor_lttpr_exit_manual_automation_9[0], sizeof(vendor_lttpr_exit_manual_automation_9));
72 }
73 
set_dio_fixed_vs_pe_retimer_dp_link_test_pattern_override(struct dc_link * link,const struct link_resource * link_res,struct encoder_set_dp_phy_pattern_param * tp_params,const struct link_hwss * link_hwss)74 static bool set_dio_fixed_vs_pe_retimer_dp_link_test_pattern_override(struct dc_link *link,
75 		const struct link_resource *link_res, struct encoder_set_dp_phy_pattern_param *tp_params,
76 		const struct link_hwss *link_hwss)
77 {
78 	struct encoder_set_dp_phy_pattern_param hw_tp_params = { 0 };
79 	const uint8_t pltpat_custom[10] = {0x1F, 0x7C, 0xF0, 0xC1, 0x07, 0x1F, 0x7C, 0xF0, 0xC1, 0x07};
80 	const uint8_t vendor_lttpr_write_data_pg0[4] = {0x1, 0x11, 0x0, 0x0};
81 	const uint8_t vendor_lttpr_exit_manual_automation_0[4] = {0x1, 0x11, 0x0, 0x06};
82 
83 	if (!link->dpcd_caps.lttpr_caps.main_link_channel_coding.bits.DP_128b_132b_SUPPORTED)
84 		return false;
85 
86 	if (tp_params == NULL)
87 		return false;
88 
89 	if (IS_DP_PHY_SQUARE_PATTERN(link->current_test_pattern))
90 		// Deprogram overrides from previous test pattern
91 		dp_dio_fixed_vs_pe_retimer_exit_manual_automation(link);
92 
93 	switch (tp_params->dp_phy_pattern) {
94 	case DP_TEST_PATTERN_80BIT_CUSTOM:
95 		if (tp_params->custom_pattern_size == 0 || memcmp(tp_params->custom_pattern,
96 				pltpat_custom, tp_params->custom_pattern_size) != 0)
97 			return false;
98 		hw_tp_params.custom_pattern = tp_params->custom_pattern;
99 		hw_tp_params.custom_pattern_size = tp_params->custom_pattern_size;
100 		break;
101 	case DP_TEST_PATTERN_D102:
102 		break;
103 	default:
104 		if (link->current_test_pattern == DP_TEST_PATTERN_80BIT_CUSTOM ||
105 				link->current_test_pattern == DP_TEST_PATTERN_D102)
106 			// Deprogram overrides from previous test pattern
107 			link->dc->link_srv->configure_fixed_vs_pe_retimer(link->ddc,
108 					&vendor_lttpr_exit_manual_automation_0[0],
109 					sizeof(vendor_lttpr_exit_manual_automation_0));
110 
111 		return false;
112 	}
113 
114 	hw_tp_params.dp_phy_pattern = tp_params->dp_phy_pattern;
115 	hw_tp_params.dp_panel_mode = tp_params->dp_panel_mode;
116 
117 	if (link_hwss->ext.set_dp_link_test_pattern)
118 		link_hwss->ext.set_dp_link_test_pattern(link, link_res, &hw_tp_params);
119 
120 	link->dc->link_srv->configure_fixed_vs_pe_retimer(link->ddc,
121 			&vendor_lttpr_write_data_pg0[0], sizeof(vendor_lttpr_write_data_pg0));
122 
123 	return true;
124 }
125 
set_dio_fixed_vs_pe_retimer_dp_link_test_pattern(struct dc_link * link,const struct link_resource * link_res,struct encoder_set_dp_phy_pattern_param * tp_params)126 static void set_dio_fixed_vs_pe_retimer_dp_link_test_pattern(struct dc_link *link,
127 		const struct link_resource *link_res,
128 		struct encoder_set_dp_phy_pattern_param *tp_params)
129 {
130 	struct link_encoder *link_enc = link_enc_cfg_get_link_enc(link);
131 
132 	if (!set_dio_fixed_vs_pe_retimer_dp_link_test_pattern_override(
133 			link, link_res, tp_params, get_dio_link_hwss())) {
134 		link_enc->funcs->dp_set_phy_pattern(link_enc, tp_params);
135 	}
136 	link->dc->link_srv->dp_trace_source_sequence(link, DPCD_SOURCE_SEQ_AFTER_SET_SOURCE_PATTERN);
137 }
138 
enable_dio_fixed_vs_pe_retimer_program_4lane_output(struct dc_link * link)139 void enable_dio_fixed_vs_pe_retimer_program_4lane_output(struct dc_link *link)
140 {
141 	const uint8_t vendor_lttpr_write_data_4lane_1[4] = {0x1, 0x6E, 0xF2, 0x19};
142 	const uint8_t vendor_lttpr_write_data_4lane_2[4] = {0x1, 0x6B, 0xF2, 0x01};
143 	const uint8_t vendor_lttpr_write_data_4lane_3[4] = {0x1, 0x6D, 0xF2, 0x18};
144 	const uint8_t vendor_lttpr_write_data_4lane_4[4] = {0x1, 0x6C, 0xF2, 0x03};
145 	const uint8_t vendor_lttpr_write_data_4lane_5[4] = {0x1, 0x03, 0xF3, 0x06};
146 
147 	link->dc->link_srv->configure_fixed_vs_pe_retimer(link->ddc,
148 			&vendor_lttpr_write_data_4lane_1[0], sizeof(vendor_lttpr_write_data_4lane_1));
149 	link->dc->link_srv->configure_fixed_vs_pe_retimer(link->ddc,
150 			&vendor_lttpr_write_data_4lane_2[0], sizeof(vendor_lttpr_write_data_4lane_2));
151 	link->dc->link_srv->configure_fixed_vs_pe_retimer(link->ddc,
152 			&vendor_lttpr_write_data_4lane_3[0], sizeof(vendor_lttpr_write_data_4lane_3));
153 	link->dc->link_srv->configure_fixed_vs_pe_retimer(link->ddc,
154 			&vendor_lttpr_write_data_4lane_4[0], sizeof(vendor_lttpr_write_data_4lane_4));
155 	link->dc->link_srv->configure_fixed_vs_pe_retimer(link->ddc,
156 			&vendor_lttpr_write_data_4lane_5[0], sizeof(vendor_lttpr_write_data_4lane_5));
157 }
158 
enable_dio_fixed_vs_pe_retimer_dp_link_output(struct dc_link * link,const struct link_resource * link_res,enum signal_type signal,enum clock_source_id clock_source,const struct dc_link_settings * link_settings)159 static void enable_dio_fixed_vs_pe_retimer_dp_link_output(struct dc_link *link,
160 		const struct link_resource *link_res,
161 		enum signal_type signal,
162 		enum clock_source_id clock_source,
163 		const struct dc_link_settings *link_settings)
164 {
165 	if (link_settings->lane_count == LANE_COUNT_FOUR)
166 		enable_dio_fixed_vs_pe_retimer_program_4lane_output(link);
167 
168 	enable_dio_dp_link_output(link, link_res, signal, clock_source, link_settings);
169 }
170 
171 static const struct link_hwss dio_fixed_vs_pe_retimer_link_hwss = {
172 	.setup_stream_encoder = setup_dio_stream_encoder,
173 	.reset_stream_encoder = reset_dio_stream_encoder,
174 	.setup_stream_attribute = setup_dio_stream_attribute,
175 	.disable_link_output = disable_dio_link_output,
176 	.setup_audio_output = setup_dio_audio_output,
177 	.enable_audio_packet = enable_dio_audio_packet,
178 	.disable_audio_packet = disable_dio_audio_packet,
179 	.ext = {
180 		.set_throttled_vcp_size = set_dio_throttled_vcp_size,
181 		.enable_dp_link_output = enable_dio_fixed_vs_pe_retimer_dp_link_output,
182 		.set_dp_link_test_pattern = set_dio_fixed_vs_pe_retimer_dp_link_test_pattern,
183 		.set_dp_lane_settings = set_dio_dp_lane_settings,
184 		.update_stream_allocation_table = update_dio_stream_allocation_table,
185 	},
186 };
187 
requires_fixed_vs_pe_retimer_dio_link_hwss(const struct dc_link * link)188 bool requires_fixed_vs_pe_retimer_dio_link_hwss(const struct dc_link *link)
189 {
190 	return (link->chip_caps & EXT_DISPLAY_PATH_CAPS__DP_FIXED_VS_EN);
191 }
192 
get_dio_fixed_vs_pe_retimer_link_hwss(void)193 const struct link_hwss *get_dio_fixed_vs_pe_retimer_link_hwss(void)
194 {
195 	return &dio_fixed_vs_pe_retimer_link_hwss;
196 }
197