2 * Copyright 2012-14 Advanced Micro Devices, Inc.
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:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
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.
30 #include "grph_object_defs.h"
32 #ifdef CONFIG_DRM_AMD_DC_DSC_SUPPORT
33 enum dc_link_fec_state {
34 dc_link_fec_not_ready,
39 struct dc_link_status {
41 struct dpcd_caps *dpcd_caps;
44 /* DP MST stream allocation (payload bandwidth number) */
45 struct link_mst_stream_allocation {
47 const struct stream_encoder *stream_enc;
48 /* associate DRM payload table with DC stream encoder */
50 /* number of slots required for the DP stream in transport packet */
54 /* DP MST stream allocation table */
55 struct link_mst_stream_allocation_table {
56 /* number of DP video streams */
58 /* array of stream allocations */
59 struct link_mst_stream_allocation stream_allocations[MAX_CONTROLLER_NUM];
63 uint64_t edp_poweroff;
68 struct time_stamp time_stamp;
71 * A link contains one or more sinks and their connected status.
72 * The currently active signal type (HDMI, DP-SST, DP-MST) is also reported.
75 struct dc_sink *remote_sinks[MAX_SINKS_PER_LINK];
76 unsigned int sink_count;
77 struct dc_sink *local_sink;
78 unsigned int link_index;
79 enum dc_connection_type type;
80 enum signal_type connector_signal;
81 enum dc_irq_source irq_source_hpd;
82 enum dc_irq_source irq_source_hpd_rx;/* aka DP Short Pulse */
83 bool is_hpd_filter_disabled;
85 bool link_state_valid;
86 bool aux_access_disabled;
87 bool sync_lt_in_progress;
89 /* caps is the same as reported_link_cap. link_traing use
90 * reported_link_cap. Will clean up. TODO
92 struct dc_link_settings reported_link_cap;
93 struct dc_link_settings verified_link_cap;
94 struct dc_link_settings cur_link_settings;
95 struct dc_lane_settings cur_lane_setting;
96 struct dc_link_settings preferred_link_setting;
97 struct dc_link_training_overrides preferred_training_settings;
103 uint8_t link_enc_hw_inst;
105 bool test_pattern_enabled;
106 union compliance_test_state compliance_test_state;
110 struct ddc_service *ddc;
114 /* Private to DC core */
118 struct dc_context *ctx;
120 struct link_encoder *link_enc;
121 struct graphics_object_id link_id;
122 union ddi_channel_mapping ddi_channel_mapping;
123 struct connector_device_tag_info device_tag;
124 struct dpcd_caps dpcd_caps;
125 uint32_t dongle_max_pix_clk;
126 unsigned short chip_caps;
127 unsigned int dpcd_sink_count;
128 enum edp_revision edp_revision;
129 bool psr_feature_enabled;
130 bool psr_allow_active;
132 /* MST record stream using this link */
134 bool dp_keep_receiver_powered;
137 struct link_mst_stream_allocation_table mst_stream_alloc_table;
139 struct dc_link_status link_status;
141 struct link_trace link_trace;
142 struct gpio *hpd_gpio;
143 #ifdef CONFIG_DRM_AMD_DC_DSC_SUPPORT
144 enum dc_link_fec_state fec_state;
148 const struct dc_link_status *dc_link_get_status(const struct dc_link *dc_link);
151 * dc_get_link_at_index() - Return an enumerated dc_link.
153 * dc_link order is constant and determined at
154 * boot time. They cannot be created or destroyed.
155 * Use dc_get_caps() to get number of links.
157 static inline struct dc_link *dc_get_link_at_index(struct dc *dc, uint32_t link_index)
159 return dc->links[link_index];
162 static inline struct dc_link *get_edp_link(const struct dc *dc)
166 // report any eDP links, even unconnected DDI's
167 for (i = 0; i < dc->link_count; i++) {
168 if (dc->links[i]->connector_signal == SIGNAL_TYPE_EDP)
174 /* Set backlight level of an embedded panel (eDP, LVDS).
175 * backlight_pwm_u16_16 is unsigned 32 bit with 16 bit integer
176 * and 16 bit fractional, where 1.0 is max backlight value.
178 bool dc_link_set_backlight_level(const struct dc_link *dc_link,
179 uint32_t backlight_pwm_u16_16,
180 uint32_t frame_ramp);
182 int dc_link_get_backlight_level(const struct dc_link *dc_link);
184 bool dc_link_set_abm_disable(const struct dc_link *dc_link);
186 bool dc_link_set_psr_allow_active(struct dc_link *dc_link, bool enable, bool wait);
188 bool dc_link_get_psr_state(const struct dc_link *dc_link, uint32_t *psr_state);
190 bool dc_link_setup_psr(struct dc_link *dc_link,
191 const struct dc_stream_state *stream, struct psr_config *psr_config,
192 struct psr_context *psr_context);
194 /* Request DC to detect if there is a Panel connected.
195 * boot - If this call is during initial boot.
196 * Return false for any type of detection failure or MST detection
197 * true otherwise. True meaning further action is required (status update
198 * and OS notification).
200 enum dc_detect_reason {
206 bool dc_link_detect(struct dc_link *dc_link, enum dc_detect_reason reason);
207 bool dc_link_get_hpd_state(struct dc_link *dc_link);
208 enum dc_status dc_link_allocate_mst_payload(struct pipe_ctx *pipe_ctx);
210 /* Notify DC about DP RX Interrupt (aka Short Pulse Interrupt).
212 * true - Downstream port status changed. DM should call DC to do the
214 * false - no change in Downstream port status. No further action required
216 bool dc_link_handle_hpd_rx_irq(struct dc_link *dc_link,
217 union hpd_irq_data *hpd_irq_dpcd_data, bool *out_link_loss);
219 struct dc_sink_init_data;
221 struct dc_sink *dc_link_add_remote_sink(
222 struct dc_link *dc_link,
225 struct dc_sink_init_data *init_data);
227 void dc_link_remove_remote_sink(
228 struct dc_link *link,
229 struct dc_sink *sink);
231 /* Used by diagnostics for virtual link at the moment */
233 void dc_link_dp_set_drive_settings(
234 struct dc_link *link,
235 struct link_training_settings *lt_settings);
237 bool dc_link_dp_perform_link_training_skip_aux(
238 struct dc_link *link,
239 const struct dc_link_settings *link_setting);
241 enum link_training_result dc_link_dp_perform_link_training(
242 struct dc_link *link,
243 const struct dc_link_settings *link_setting,
244 bool skip_video_pattern);
246 bool dc_link_dp_sync_lt_begin(struct dc_link *link);
248 enum link_training_result dc_link_dp_sync_lt_attempt(
249 struct dc_link *link,
250 struct dc_link_settings *link_setting,
251 struct dc_link_training_overrides *lt_settings);
253 bool dc_link_dp_sync_lt_end(struct dc_link *link, bool link_down);
255 void dc_link_dp_enable_hpd(const struct dc_link *link);
257 void dc_link_dp_disable_hpd(const struct dc_link *link);
259 bool dc_link_dp_set_test_pattern(
260 struct dc_link *link,
261 enum dp_test_pattern test_pattern,
262 const struct link_training_settings *p_link_settings,
263 const unsigned char *p_custom_pattern,
264 unsigned int cust_pattern_size);
266 void dc_link_enable_hpd_filter(struct dc_link *link, bool enable);
268 bool dc_link_is_dp_sink_present(struct dc_link *link);
270 bool dc_link_detect_sink(struct dc_link *link, enum dc_connection_type *type);
272 * DPCD access interfaces
275 void dc_link_set_drive_settings(struct dc *dc,
276 struct link_training_settings *lt_settings,
277 const struct dc_link *link);
278 void dc_link_perform_link_training(struct dc *dc,
279 struct dc_link_settings *link_setting,
280 bool skip_video_pattern);
281 void dc_link_set_preferred_link_settings(struct dc *dc,
282 struct dc_link_settings *link_setting,
283 struct dc_link *link);
284 void dc_link_set_preferred_training_settings(struct dc *dc,
285 struct dc_link_settings *link_setting,
286 struct dc_link_training_overrides *lt_overrides,
287 struct dc_link *link,
288 bool skip_immediate_retrain);
289 void dc_link_enable_hpd(const struct dc_link *link);
290 void dc_link_disable_hpd(const struct dc_link *link);
291 void dc_link_set_test_pattern(struct dc_link *link,
292 enum dp_test_pattern test_pattern,
293 const struct link_training_settings *p_link_settings,
294 const unsigned char *p_custom_pattern,
295 unsigned int cust_pattern_size);
296 uint32_t dc_link_bandwidth_kbps(
297 const struct dc_link *link,
298 const struct dc_link_settings *link_setting);
300 const struct dc_link_settings *dc_link_get_link_cap(
301 const struct dc_link *link);
306 struct i2c_command *cmd);
308 bool dc_submit_i2c_oem(
310 struct i2c_command *cmd);
312 uint32_t dc_bandwidth_in_kbps_from_timing(
313 const struct dc_crtc_timing *timing);
314 #endif /* DC_LINK_H_ */