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/*
* Copyright 2012-14 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors: AMD
*
*/
#ifndef DC_LINK_H_
#define DC_LINK_H_
#include "dc_types.h"
#include "grph_object_defs.h"
struct dc_link_status {
struct dpcd_caps *dpcd_caps;
};
/* DP MST stream allocation (payload bandwidth number) */
struct link_mst_stream_allocation {
/* DIG front */
const struct stream_encoder *stream_enc;
/* associate DRM payload table with DC stream encoder */
uint8_t vcp_id;
/* number of slots required for the DP stream in transport packet */
uint8_t slot_count;
};
/* DP MST stream allocation table */
struct link_mst_stream_allocation_table {
/* number of DP video streams */
int stream_count;
/* array of stream allocations */
struct link_mst_stream_allocation stream_allocations[MAX_CONTROLLER_NUM];
};
/*
* A link contains one or more sinks and their connected status.
* The currently active signal type (HDMI, DP-SST, DP-MST) is also reported.
*/
struct dc_link {
struct dc_sink *remote_sinks[MAX_SINKS_PER_LINK];
unsigned int sink_count;
struct dc_sink *local_sink;
unsigned int link_index;
enum dc_connection_type type;
enum signal_type connector_signal;
enum dc_irq_source irq_source_hpd;
enum dc_irq_source irq_source_hpd_rx;/* aka DP Short Pulse */
bool is_hpd_filter_disabled;
/* caps is the same as reported_link_cap. link_traing use
* reported_link_cap. Will clean up. TODO
*/
struct dc_link_settings reported_link_cap;
struct dc_link_settings verified_link_cap;
struct dc_link_settings cur_link_settings;
struct dc_lane_settings cur_lane_setting;
struct dc_link_settings preferred_link_setting;
uint8_t ddc_hw_inst;
uint8_t hpd_src;
uint8_t link_enc_hw_inst;
bool test_pattern_enabled;
union compliance_test_state compliance_test_state;
void *priv;
struct ddc_service *ddc;
bool aux_mode;
/* Private to DC core */
const struct dc *dc;
struct dc_context *ctx;
struct link_encoder *link_enc;
struct graphics_object_id link_id;
union ddi_channel_mapping ddi_channel_mapping;
struct connector_device_tag_info device_tag;
struct dpcd_caps dpcd_caps;
unsigned short chip_caps;
unsigned int dpcd_sink_count;
enum edp_revision edp_revision;
bool psr_enabled;
/* MST record stream using this link */
struct link_flags {
bool dp_keep_receiver_powered;
} wa_flags;
struct link_mst_stream_allocation_table mst_stream_alloc_table;
struct dc_link_status link_status;
};
const struct dc_link_status *dc_link_get_status(const struct dc_link *dc_link);
/*
* Return an enumerated dc_link. dc_link order is constant and determined at
* boot time. They cannot be created or destroyed.
* Use dc_get_caps() to get number of links.
*/
static inline struct dc_link *dc_get_link_at_index(struct dc *dc, uint32_t link_index)
{
return dc->links[link_index];
}
/* Set backlight level of an embedded panel (eDP, LVDS). */
bool dc_link_set_backlight_level(const struct dc_link *dc_link, uint32_t level,
uint32_t frame_ramp, const struct dc_stream_state *stream);
bool dc_link_set_psr_enable(const struct dc_link *dc_link, bool enable, bool wait);
bool dc_link_get_psr_state(const struct dc_link *dc_link, uint32_t *psr_state);
bool dc_link_setup_psr(struct dc_link *dc_link,
const struct dc_stream_state *stream, struct psr_config *psr_config,
struct psr_context *psr_context);
/* Request DC to detect if there is a Panel connected.
* boot - If this call is during initial boot.
* Return false for any type of detection failure or MST detection
* true otherwise. True meaning further action is required (status update
* and OS notification).
*/
enum dc_detect_reason {
DETECT_REASON_BOOT,
DETECT_REASON_HPD,
DETECT_REASON_HPDRX,
};
bool dc_link_detect(struct dc_link *dc_link, enum dc_detect_reason reason);
/* Notify DC about DP RX Interrupt (aka Short Pulse Interrupt).
* Return:
* true - Downstream port status changed. DM should call DC to do the
* detection.
* false - no change in Downstream port status. No further action required
* from DM. */
bool dc_link_handle_hpd_rx_irq(struct dc_link *dc_link,
union hpd_irq_data *hpd_irq_dpcd_data);
struct dc_sink_init_data;
struct dc_sink *dc_link_add_remote_sink(
struct dc_link *dc_link,
const uint8_t *edid,
int len,
struct dc_sink_init_data *init_data);
void dc_link_remove_remote_sink(
struct dc_link *link,
struct dc_sink *sink);
/* Used by diagnostics for virtual link at the moment */
void dc_link_dp_set_drive_settings(
struct dc_link *link,
struct link_training_settings *lt_settings);
enum link_training_result dc_link_dp_perform_link_training(
struct dc_link *link,
const struct dc_link_settings *link_setting,
bool skip_video_pattern);
void dc_link_dp_enable_hpd(const struct dc_link *link);
void dc_link_dp_disable_hpd(const struct dc_link *link);
bool dc_link_dp_set_test_pattern(
struct dc_link *link,
enum dp_test_pattern test_pattern,
const struct link_training_settings *p_link_settings,
const unsigned char *p_custom_pattern,
unsigned int cust_pattern_size);
void dc_link_enable_hpd_filter(struct dc_link *link, bool enable);
/*
* DPCD access interfaces
*/
bool dc_submit_i2c(
struct dc *dc,
uint32_t link_index,
struct i2c_command *cmd);
#endif /* DC_LINK_H_ */
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