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android-kvm / linux / 35b6b28e69985eafb20b3b2c7bd6eca452b56b53 / . / drivers / gpu / drm / amd / display / dc / core / dc_link.c
blob: 60544788e911ee15969e0cefa1aeb630cf1f3f44 [file] [log] [blame]
/*
* Copyright 2012-15 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
*
*/
#include <linux/slab.h>
#include "dm_services.h"
#include "atomfirmware.h"
#include "dm_helpers.h"
#include "dc.h"
#include "grph_object_id.h"
#include "gpio_service_interface.h"
#include "core_status.h"
#include "dc_link_dp.h"
#include "dc_link_ddc.h"
#include "link_hwss.h"
#include "opp.h"
#include "link_encoder.h"
#include "hw_sequencer.h"
#include "resource.h"
#include "abm.h"
#include "fixed31_32.h"
#include "dpcd_defs.h"
#include "dmcu.h"
#include "hw/clk_mgr.h"
#include "dce/dmub_psr.h"
#include "dmub/dmub_srv.h"
#include "inc/hw/panel_cntl.h"
#include "inc/link_enc_cfg.h"
#include "inc/link_dpcd.h"
#include "dc/dcn30/dcn30_vpg.h"
#define DC_LOGGER_INIT(logger)
#define LINK_INFO(...) \
DC_LOG_HW_HOTPLUG( \
__VA_ARGS__)
#define RETIMER_REDRIVER_INFO(...) \
DC_LOG_RETIMER_REDRIVER( \
__VA_ARGS__)
/*******************************************************************************
* Private functions
******************************************************************************/
#if defined(CONFIG_DRM_AMD_DC_DCN)
static bool add_dp_hpo_link_encoder_to_link(struct dc_link *link)
{
struct hpo_dp_link_encoder *enc = resource_get_unused_hpo_dp_link_encoder(
link->dc->res_pool);
if (!link->hpo_dp_link_enc && enc) {
link->hpo_dp_link_enc = enc;
link->hpo_dp_link_enc->transmitter = link->link_enc->transmitter;
link->hpo_dp_link_enc->hpd_source = link->link_enc->hpd_source;
}
return (link->hpo_dp_link_enc != NULL);
}
static void remove_dp_hpo_link_encoder_from_link(struct dc_link *link)
{
if (link->hpo_dp_link_enc) {
link->hpo_dp_link_enc->hpd_source = HPD_SOURCEID_UNKNOWN;
link->hpo_dp_link_enc->transmitter = TRANSMITTER_UNKNOWN;
link->hpo_dp_link_enc = NULL;
}
}
#endif
static void dc_link_destruct(struct dc_link *link)
{
int i;
if (link->hpd_gpio) {
dal_gpio_destroy_irq(&link->hpd_gpio);
link->hpd_gpio = NULL;
}
if (link->ddc)
dal_ddc_service_destroy(&link->ddc);
if (link->panel_cntl)
link->panel_cntl->funcs->destroy(&link->panel_cntl);
if (link->link_enc) {
/* Update link encoder resource tracking variables. These are used for
* the dynamic assignment of link encoders to streams. Virtual links
* are not assigned encoder resources on creation.
*/
if (link->link_id.id != CONNECTOR_ID_VIRTUAL) {
link->dc->res_pool->link_encoders[link->eng_id - ENGINE_ID_DIGA] = NULL;
link->dc->res_pool->dig_link_enc_count--;
}
link->link_enc->funcs->destroy(&link->link_enc);
}
#if defined(CONFIG_DRM_AMD_DC_DCN)
if (link->hpo_dp_link_enc) {
remove_dp_hpo_link_encoder_from_link(link);
}
#endif
if (link->local_sink)
dc_sink_release(link->local_sink);
for (i = 0; i < link->sink_count; ++i)
dc_sink_release(link->remote_sinks[i]);
}
struct gpio *get_hpd_gpio(struct dc_bios *dcb,
struct graphics_object_id link_id,
struct gpio_service *gpio_service)
{
enum bp_result bp_result;
struct graphics_object_hpd_info hpd_info;
struct gpio_pin_info pin_info;
if (dcb->funcs->get_hpd_info(dcb, link_id, &hpd_info) != BP_RESULT_OK)
return NULL;
bp_result = dcb->funcs->get_gpio_pin_info(dcb,
hpd_info.hpd_int_gpio_uid, &pin_info);
if (bp_result != BP_RESULT_OK) {
ASSERT(bp_result == BP_RESULT_NORECORD);
return NULL;
}
return dal_gpio_service_create_irq(gpio_service,
pin_info.offset,
pin_info.mask);
}
/*
* Function: program_hpd_filter
*
* @brief
* Programs HPD filter on associated HPD line
*
* @param [in] delay_on_connect_in_ms: Connect filter timeout
* @param [in] delay_on_disconnect_in_ms: Disconnect filter timeout
*
* @return
* true on success, false otherwise
*/
static bool program_hpd_filter(const struct dc_link *link)
{
bool result = false;
struct gpio *hpd;
int delay_on_connect_in_ms = 0;
int delay_on_disconnect_in_ms = 0;
if (link->is_hpd_filter_disabled)
return false;
/* Verify feature is supported */
switch (link->connector_signal) {
case SIGNAL_TYPE_DVI_SINGLE_LINK:
case SIGNAL_TYPE_DVI_DUAL_LINK:
case SIGNAL_TYPE_HDMI_TYPE_A:
/* Program hpd filter */
delay_on_connect_in_ms = 500;
delay_on_disconnect_in_ms = 100;
break;
case SIGNAL_TYPE_DISPLAY_PORT:
case SIGNAL_TYPE_DISPLAY_PORT_MST:
/* Program hpd filter to allow DP signal to settle */
/* 500: not able to detect MST <-> SST switch as HPD is low for
* only 100ms on DELL U2413
* 0: some passive dongle still show aux mode instead of i2c
* 20-50: not enough to hide bouncing HPD with passive dongle.
* also see intermittent i2c read issues.
*/
delay_on_connect_in_ms = 80;
delay_on_disconnect_in_ms = 0;
break;
case SIGNAL_TYPE_LVDS:
case SIGNAL_TYPE_EDP:
default:
/* Don't program hpd filter */
return false;
}
/* Obtain HPD handle */
hpd = get_hpd_gpio(link->ctx->dc_bios, link->link_id,
link->ctx->gpio_service);
if (!hpd)
return result;
/* Setup HPD filtering */
if (dal_gpio_open(hpd, GPIO_MODE_INTERRUPT) == GPIO_RESULT_OK) {
struct gpio_hpd_config config;
config.delay_on_connect = delay_on_connect_in_ms;
config.delay_on_disconnect = delay_on_disconnect_in_ms;
dal_irq_setup_hpd_filter(hpd, &config);
dal_gpio_close(hpd);
result = true;
} else {
ASSERT_CRITICAL(false);
}
/* Release HPD handle */
dal_gpio_destroy_irq(&hpd);
return result;
}
bool dc_link_wait_for_t12(struct dc_link *link)
{
if (link->connector_signal == SIGNAL_TYPE_EDP && link->dc->hwss.edp_wait_for_T12) {
link->dc->hwss.edp_wait_for_T12(link);
return true;
}
return false;
}
/**
* dc_link_detect_sink() - Determine if there is a sink connected
*
* @link: pointer to the dc link
* @type: Returned connection type
* Does not detect downstream devices, such as MST sinks
* or display connected through active dongles
*/
bool dc_link_detect_sink(struct dc_link *link, enum dc_connection_type *type)
{
uint32_t is_hpd_high = 0;
struct gpio *hpd_pin;
if (link->connector_signal == SIGNAL_TYPE_LVDS) {
*type = dc_connection_single;
return true;
}
if (link->connector_signal == SIGNAL_TYPE_EDP) {
/*in case it is not on*/
link->dc->hwss.edp_power_control(link, true);
link->dc->hwss.edp_wait_for_hpd_ready(link, true);
}
/* Link may not have physical HPD pin. */
if (link->ep_type != DISPLAY_ENDPOINT_PHY) {
if (link->hpd_status)
*type = dc_connection_single;
else
*type = dc_connection_none;
return true;
}
/* todo: may need to lock gpio access */
hpd_pin = get_hpd_gpio(link->ctx->dc_bios, link->link_id,
link->ctx->gpio_service);
if (!hpd_pin)
goto hpd_gpio_failure;
dal_gpio_open(hpd_pin, GPIO_MODE_INTERRUPT);
dal_gpio_get_value(hpd_pin, &is_hpd_high);
dal_gpio_close(hpd_pin);
dal_gpio_destroy_irq(&hpd_pin);
if (is_hpd_high) {
*type = dc_connection_single;
/* TODO: need to do the actual detection */
} else {
*type = dc_connection_none;
}
return true;
hpd_gpio_failure:
return false;
}
static enum ddc_transaction_type get_ddc_transaction_type(enum signal_type sink_signal)
{
enum ddc_transaction_type transaction_type = DDC_TRANSACTION_TYPE_NONE;
switch (sink_signal) {
case SIGNAL_TYPE_DVI_SINGLE_LINK:
case SIGNAL_TYPE_DVI_DUAL_LINK:
case SIGNAL_TYPE_HDMI_TYPE_A:
case SIGNAL_TYPE_LVDS:
case SIGNAL_TYPE_RGB:
transaction_type = DDC_TRANSACTION_TYPE_I2C;
break;
case SIGNAL_TYPE_DISPLAY_PORT:
case SIGNAL_TYPE_EDP:
transaction_type = DDC_TRANSACTION_TYPE_I2C_OVER_AUX;
break;
case SIGNAL_TYPE_DISPLAY_PORT_MST:
/* MST does not use I2COverAux, but there is the
* SPECIAL use case for "immediate dwnstrm device
* access" (EPR#370830).
*/
transaction_type = DDC_TRANSACTION_TYPE_I2C_OVER_AUX;
break;
default:
break;
}
return transaction_type;
}
static enum signal_type get_basic_signal_type(struct graphics_object_id encoder,
struct graphics_object_id downstream)
{
if (downstream.type == OBJECT_TYPE_CONNECTOR) {
switch (downstream.id) {
case CONNECTOR_ID_SINGLE_LINK_DVII:
switch (encoder.id) {
case ENCODER_ID_INTERNAL_DAC1:
case ENCODER_ID_INTERNAL_KLDSCP_DAC1:
case ENCODER_ID_INTERNAL_DAC2:
case ENCODER_ID_INTERNAL_KLDSCP_DAC2:
return SIGNAL_TYPE_RGB;
default:
return SIGNAL_TYPE_DVI_SINGLE_LINK;
}
break;
case CONNECTOR_ID_DUAL_LINK_DVII:
{
switch (encoder.id) {
case ENCODER_ID_INTERNAL_DAC1:
case ENCODER_ID_INTERNAL_KLDSCP_DAC1:
case ENCODER_ID_INTERNAL_DAC2:
case ENCODER_ID_INTERNAL_KLDSCP_DAC2:
return SIGNAL_TYPE_RGB;
default:
return SIGNAL_TYPE_DVI_DUAL_LINK;
}
}
break;
case CONNECTOR_ID_SINGLE_LINK_DVID:
return SIGNAL_TYPE_DVI_SINGLE_LINK;
case CONNECTOR_ID_DUAL_LINK_DVID:
return SIGNAL_TYPE_DVI_DUAL_LINK;
case CONNECTOR_ID_VGA:
return SIGNAL_TYPE_RGB;
case CONNECTOR_ID_HDMI_TYPE_A:
return SIGNAL_TYPE_HDMI_TYPE_A;
case CONNECTOR_ID_LVDS:
return SIGNAL_TYPE_LVDS;
case CONNECTOR_ID_DISPLAY_PORT:
return SIGNAL_TYPE_DISPLAY_PORT;
case CONNECTOR_ID_EDP:
return SIGNAL_TYPE_EDP;
default:
return SIGNAL_TYPE_NONE;
}
} else if (downstream.type == OBJECT_TYPE_ENCODER) {
switch (downstream.id) {
case ENCODER_ID_EXTERNAL_NUTMEG:
case ENCODER_ID_EXTERNAL_TRAVIS:
return SIGNAL_TYPE_DISPLAY_PORT;
default:
return SIGNAL_TYPE_NONE;
}
}
return SIGNAL_TYPE_NONE;
}
/*
* dc_link_is_dp_sink_present() - Check if there is a native DP
* or passive DP-HDMI dongle connected
*/
bool dc_link_is_dp_sink_present(struct dc_link *link)
{
enum gpio_result gpio_result;
uint32_t clock_pin = 0;
uint8_t retry = 0;
struct ddc *ddc;
enum connector_id connector_id =
dal_graphics_object_id_get_connector_id(link->link_id);
bool present =
((connector_id == CONNECTOR_ID_DISPLAY_PORT) ||
(connector_id == CONNECTOR_ID_EDP));
ddc = dal_ddc_service_get_ddc_pin(link->ddc);
if (!ddc) {
BREAK_TO_DEBUGGER();
return present;
}
/* Open GPIO and set it to I2C mode */
/* Note: this GpioMode_Input will be converted
* to GpioConfigType_I2cAuxDualMode in GPIO component,
* which indicates we need additional delay
*/
if (dal_ddc_open(ddc, GPIO_MODE_INPUT,
GPIO_DDC_CONFIG_TYPE_MODE_I2C) != GPIO_RESULT_OK) {
dal_ddc_close(ddc);
return present;
}
/*
* Read GPIO: DP sink is present if both clock and data pins are zero
*
* [W/A] plug-unplug DP cable, sometimes customer board has
* one short pulse on clk_pin(1V, < 1ms). DP will be config to HDMI/DVI
* then monitor can't br light up. Add retry 3 times
* But in real passive dongle, it need additional 3ms to detect
*/
do {
gpio_result = dal_gpio_get_value(ddc->pin_clock, &clock_pin);
ASSERT(gpio_result == GPIO_RESULT_OK);
if (clock_pin)
udelay(1000);
else
break;
} while (retry++ < 3);
present = (gpio_result == GPIO_RESULT_OK) && !clock_pin;
dal_ddc_close(ddc);
return present;
}
/*
* @brief
* Detect output sink type
*/
static enum signal_type link_detect_sink(struct dc_link *link,
enum dc_detect_reason reason)
{
enum signal_type result;
struct graphics_object_id enc_id;
if (link->is_dig_mapping_flexible)
enc_id = (struct graphics_object_id){.id = ENCODER_ID_UNKNOWN};
else
enc_id = link->link_enc->id;
result = get_basic_signal_type(enc_id, link->link_id);
/* Use basic signal type for link without physical connector. */
if (link->ep_type != DISPLAY_ENDPOINT_PHY)
return result;
/* Internal digital encoder will detect only dongles
* that require digital signal
*/
/* Detection mechanism is different
* for different native connectors.
* LVDS connector supports only LVDS signal;
* PCIE is a bus slot, the actual connector needs to be detected first;
* eDP connector supports only eDP signal;
* HDMI should check straps for audio
*/
/* PCIE detects the actual connector on add-on board */
if (link->link_id.id == CONNECTOR_ID_PCIE) {
/* ZAZTODO implement PCIE add-on card detection */
}
switch (link->link_id.id) {
case CONNECTOR_ID_HDMI_TYPE_A: {
/* check audio support:
* if native HDMI is not supported, switch to DVI
*/
struct audio_support *aud_support =
&link->dc->res_pool->audio_support;
if (!aud_support->hdmi_audio_native)
if (link->link_id.id == CONNECTOR_ID_HDMI_TYPE_A)
result = SIGNAL_TYPE_DVI_SINGLE_LINK;
}
break;
case CONNECTOR_ID_DISPLAY_PORT: {
/* DP HPD short pulse. Passive DP dongle will not
* have short pulse
*/
if (reason != DETECT_REASON_HPDRX) {
/* Check whether DP signal detected: if not -
* we assume signal is DVI; it could be corrected
* to HDMI after dongle detection
*/
if (!dm_helpers_is_dp_sink_present(link))
result = SIGNAL_TYPE_DVI_SINGLE_LINK;
}
}
break;
default:
break;
}
return result;
}
static enum signal_type decide_signal_from_strap_and_dongle_type(enum display_dongle_type dongle_type,
struct audio_support *audio_support)
{
enum signal_type signal = SIGNAL_TYPE_NONE;
switch (dongle_type) {
case DISPLAY_DONGLE_DP_HDMI_DONGLE:
if (audio_support->hdmi_audio_on_dongle)
signal = SIGNAL_TYPE_HDMI_TYPE_A;
else
signal = SIGNAL_TYPE_DVI_SINGLE_LINK;
break;
case DISPLAY_DONGLE_DP_DVI_DONGLE:
signal = SIGNAL_TYPE_DVI_SINGLE_LINK;
break;
case DISPLAY_DONGLE_DP_HDMI_MISMATCHED_DONGLE:
if (audio_support->hdmi_audio_native)
signal = SIGNAL_TYPE_HDMI_TYPE_A;
else
signal = SIGNAL_TYPE_DVI_SINGLE_LINK;
break;
default:
signal = SIGNAL_TYPE_NONE;
break;
}
return signal;
}
static enum signal_type dp_passive_dongle_detection(struct ddc_service *ddc,
struct display_sink_capability *sink_cap,
struct audio_support *audio_support)
{
dal_ddc_service_i2c_query_dp_dual_mode_adaptor(ddc, sink_cap);
return decide_signal_from_strap_and_dongle_type(sink_cap->dongle_type,
audio_support);
}
static void link_disconnect_sink(struct dc_link *link)
{
if (link->local_sink) {
dc_sink_release(link->local_sink);
link->local_sink = NULL;
}
link->dpcd_sink_count = 0;
//link->dpcd_caps.dpcd_rev.raw = 0;
}
static void link_disconnect_remap(struct dc_sink *prev_sink, struct dc_link *link)
{
dc_sink_release(link->local_sink);
link->local_sink = prev_sink;
}
#if defined(CONFIG_DRM_AMD_DC_HDCP)
bool dc_link_is_hdcp14(struct dc_link *link, enum signal_type signal)
{
bool ret = false;
switch (signal) {
case SIGNAL_TYPE_DISPLAY_PORT:
case SIGNAL_TYPE_DISPLAY_PORT_MST:
ret = link->hdcp_caps.bcaps.bits.HDCP_CAPABLE;
break;
case SIGNAL_TYPE_DVI_SINGLE_LINK:
case SIGNAL_TYPE_DVI_DUAL_LINK:
case SIGNAL_TYPE_HDMI_TYPE_A:
/* HDMI doesn't tell us its HDCP(1.4) capability, so assume to always be capable,
* we can poll for bksv but some displays have an issue with this. Since its so rare
* for a display to not be 1.4 capable, this assumtion is ok
*/
ret = true;
break;
default:
break;
}
return ret;
}
bool dc_link_is_hdcp22(struct dc_link *link, enum signal_type signal)
{
bool ret = false;
switch (signal) {
case SIGNAL_TYPE_DISPLAY_PORT:
case SIGNAL_TYPE_DISPLAY_PORT_MST:
ret = (link->hdcp_caps.bcaps.bits.HDCP_CAPABLE &&
link->hdcp_caps.rx_caps.fields.byte0.hdcp_capable &&
(link->hdcp_caps.rx_caps.fields.version == 0x2)) ? 1 : 0;
break;
case SIGNAL_TYPE_DVI_SINGLE_LINK:
case SIGNAL_TYPE_DVI_DUAL_LINK:
case SIGNAL_TYPE_HDMI_TYPE_A:
ret = (link->hdcp_caps.rx_caps.fields.version == 0x4) ? 1:0;
break;
default:
break;
}
return ret;
}
static void query_hdcp_capability(enum signal_type signal, struct dc_link *link)
{
struct hdcp_protection_message msg22;
struct hdcp_protection_message msg14;
memset(&msg22, 0, sizeof(struct hdcp_protection_message));
memset(&msg14, 0, sizeof(struct hdcp_protection_message));
memset(link->hdcp_caps.rx_caps.raw, 0,
sizeof(link->hdcp_caps.rx_caps.raw));
if ((link->connector_signal == SIGNAL_TYPE_DISPLAY_PORT &&
link->ddc->transaction_type ==
DDC_TRANSACTION_TYPE_I2C_OVER_AUX) ||
link->connector_signal == SIGNAL_TYPE_EDP) {
msg22.data = link->hdcp_caps.rx_caps.raw;
msg22.length = sizeof(link->hdcp_caps.rx_caps.raw);
msg22.msg_id = HDCP_MESSAGE_ID_RX_CAPS;
} else {
msg22.data = &link->hdcp_caps.rx_caps.fields.version;
msg22.length = sizeof(link->hdcp_caps.rx_caps.fields.version);
msg22.msg_id = HDCP_MESSAGE_ID_HDCP2VERSION;
}
msg22.version = HDCP_VERSION_22;
msg22.link = HDCP_LINK_PRIMARY;
msg22.max_retries = 5;
dc_process_hdcp_msg(signal, link, &msg22);
if (signal == SIGNAL_TYPE_DISPLAY_PORT || signal == SIGNAL_TYPE_DISPLAY_PORT_MST) {
msg14.data = &link->hdcp_caps.bcaps.raw;
msg14.length = sizeof(link->hdcp_caps.bcaps.raw);
msg14.msg_id = HDCP_MESSAGE_ID_READ_BCAPS;
msg14.version = HDCP_VERSION_14;
msg14.link = HDCP_LINK_PRIMARY;
msg14.max_retries = 5;
dc_process_hdcp_msg(signal, link, &msg14);
}
}
#endif
static void read_current_link_settings_on_detect(struct dc_link *link)
{
union lane_count_set lane_count_set = {0};
uint8_t link_bw_set;
uint8_t link_rate_set;
uint32_t read_dpcd_retry_cnt = 10;
enum dc_status status = DC_ERROR_UNEXPECTED;
int i;
union max_down_spread max_down_spread = {0};
// Read DPCD 00101h to find out the number of lanes currently set
for (i = 0; i < read_dpcd_retry_cnt; i++) {
status = core_link_read_dpcd(link,
DP_LANE_COUNT_SET,
&lane_count_set.raw,
sizeof(lane_count_set));
/* First DPCD read after VDD ON can fail if the particular board
* does not have HPD pin wired correctly. So if DPCD read fails,
* which it should never happen, retry a few times. Target worst
* case scenario of 80 ms.
*/
if (status == DC_OK) {
link->cur_link_settings.lane_count =
lane_count_set.bits.LANE_COUNT_SET;
break;
}
msleep(8);
}
// Read DPCD 00100h to find if standard link rates are set
core_link_read_dpcd(link, DP_LINK_BW_SET,
&link_bw_set, sizeof(link_bw_set));
if (link_bw_set == 0) {
if (link->connector_signal == SIGNAL_TYPE_EDP) {
/* If standard link rates are not being used,
* Read DPCD 00115h to find the edp link rate set used
*/
core_link_read_dpcd(link, DP_LINK_RATE_SET,
&link_rate_set, sizeof(link_rate_set));
// edp_supported_link_rates_count = 0 for DP
if (link_rate_set < link->dpcd_caps.edp_supported_link_rates_count) {
link->cur_link_settings.link_rate =
link->dpcd_caps.edp_supported_link_rates[link_rate_set];
link->cur_link_settings.link_rate_set = link_rate_set;
link->cur_link_settings.use_link_rate_set = true;
}
} else {
// Link Rate not found. Seamless boot may not work.
ASSERT(false);
}
} else {
link->cur_link_settings.link_rate = link_bw_set;
link->cur_link_settings.use_link_rate_set = false;
}
// Read DPCD 00003h to find the max down spread.
core_link_read_dpcd(link, DP_MAX_DOWNSPREAD,
&max_down_spread.raw, sizeof(max_down_spread));
link->cur_link_settings.link_spread =
max_down_spread.bits.MAX_DOWN_SPREAD ?
LINK_SPREAD_05_DOWNSPREAD_30KHZ : LINK_SPREAD_DISABLED;
}
static bool detect_dp(struct dc_link *link,
struct display_sink_capability *sink_caps,
enum dc_detect_reason reason)
{
struct audio_support *audio_support = &link->dc->res_pool->audio_support;
sink_caps->signal = link_detect_sink(link, reason);
sink_caps->transaction_type =
get_ddc_transaction_type(sink_caps->signal);
if (sink_caps->transaction_type == DDC_TRANSACTION_TYPE_I2C_OVER_AUX) {
sink_caps->signal = SIGNAL_TYPE_DISPLAY_PORT;
if (!detect_dp_sink_caps(link))
return false;
if (is_mst_supported(link)) {
sink_caps->signal = SIGNAL_TYPE_DISPLAY_PORT_MST;
link->type = dc_connection_mst_branch;
dal_ddc_service_set_transaction_type(link->ddc,
sink_caps->transaction_type);
#if defined(CONFIG_DRM_AMD_DC_HDCP)
/* In case of fallback to SST when topology discovery below fails
* HDCP caps will be querried again later by the upper layer (caller
* of this function). */
query_hdcp_capability(SIGNAL_TYPE_DISPLAY_PORT_MST, link);
#endif
}
if (link->type != dc_connection_mst_branch &&
is_dp_branch_device(link))
/* DP SST branch */
link->type = dc_connection_sst_branch;
} else {
/* DP passive dongles */
sink_caps->signal = dp_passive_dongle_detection(link->ddc,
sink_caps,
audio_support);
link->dpcd_caps.dongle_type = sink_caps->dongle_type;
link->dpcd_caps.dpcd_rev.raw = 0;
}
return true;
}
static bool is_same_edid(struct dc_edid *old_edid, struct dc_edid *new_edid)
{
if (old_edid->length != new_edid->length)
return false;
if (new_edid->length == 0)
return false;
return (memcmp(old_edid->raw_edid,
new_edid->raw_edid, new_edid->length) == 0);
}
static bool wait_for_entering_dp_alt_mode(struct dc_link *link)
{
/**
* something is terribly wrong if time out is > 200ms. (5Hz)
* 500 microseconds * 400 tries us 200 ms
**/
unsigned int sleep_time_in_microseconds = 500;
unsigned int tries_allowed = 400;
bool is_in_alt_mode;
unsigned long long enter_timestamp;
unsigned long long finish_timestamp;
unsigned long long time_taken_in_ns;
int tries_taken;
DC_LOGGER_INIT(link->ctx->logger);
if (!link->link_enc->funcs->is_in_alt_mode)
return true;
is_in_alt_mode = link->link_enc->funcs->is_in_alt_mode(link->link_enc);
DC_LOG_WARNING("DP Alt mode state on HPD: %d\n", is_in_alt_mode);
if (is_in_alt_mode)
return true;
enter_timestamp = dm_get_timestamp(link->ctx);
for (tries_taken = 0; tries_taken < tries_allowed; tries_taken++) {
udelay(sleep_time_in_microseconds);
/* ask the link if alt mode is enabled, if so return ok */
if (link->link_enc->funcs->is_in_alt_mode(link->link_enc)) {
finish_timestamp = dm_get_timestamp(link->ctx);
time_taken_in_ns =
dm_get_elapse_time_in_ns(link->ctx,
finish_timestamp,
enter_timestamp);
DC_LOG_WARNING("Alt mode entered finished after %llu ms\n",
div_u64(time_taken_in_ns, 1000000));
return true;
}
}
finish_timestamp = dm_get_timestamp(link->ctx);
time_taken_in_ns = dm_get_elapse_time_in_ns(link->ctx, finish_timestamp,
enter_timestamp);
DC_LOG_WARNING("Alt mode has timed out after %llu ms\n",
div_u64(time_taken_in_ns, 1000000));
return false;
}
/*
* dc_link_detect() - Detect if a sink is attached to a given link
*
* link->local_sink is created or destroyed as needed.
*
* This does not create remote sinks but will trigger DM
* to start MST detection if a branch is detected.
*/
static bool dc_link_detect_helper(struct dc_link *link,
enum dc_detect_reason reason)
{
struct dc_sink_init_data sink_init_data = { 0 };
struct display_sink_capability sink_caps = { 0 };
uint32_t i;
bool converter_disable_audio = false;
struct audio_support *aud_support = &link->dc->res_pool->audio_support;
bool same_edid = false;
enum dc_edid_status edid_status;
struct dc_context *dc_ctx = link->ctx;
struct dc_sink *sink = NULL;
struct dc_sink *prev_sink = NULL;
struct dpcd_caps prev_dpcd_caps;
enum dc_connection_type new_connection_type = dc_connection_none;
enum dc_connection_type pre_connection_type = dc_connection_none;
bool perform_dp_seamless_boot = false;
const uint32_t post_oui_delay = 30; // 30ms
DC_LOGGER_INIT(link->ctx->logger);
if (dc_is_virtual_signal(link->connector_signal))
return false;
if (((link->connector_signal == SIGNAL_TYPE_LVDS ||
link->connector_signal == SIGNAL_TYPE_EDP) &&
(!link->dc->config.allow_edp_hotplug_detection)) &&
link->local_sink) {
// need to re-write OUI and brightness in resume case
if (link->connector_signal == SIGNAL_TYPE_EDP) {
dpcd_set_source_specific_data(link);
msleep(post_oui_delay);
dc_link_set_default_brightness_aux(link);
//TODO: use cached
}
return true;
}
if (!dc_link_detect_sink(link, &new_connection_type)) {
BREAK_TO_DEBUGGER();
return false;
}
prev_sink = link->local_sink;
if (prev_sink) {
dc_sink_retain(prev_sink);
memcpy(&prev_dpcd_caps, &link->dpcd_caps, sizeof(struct dpcd_caps));
}
link_disconnect_sink(link);
if (new_connection_type != dc_connection_none) {
pre_connection_type = link->type;
link->type = new_connection_type;
link->link_state_valid = false;
/* From Disconnected-to-Connected. */
switch (link->connector_signal) {
case SIGNAL_TYPE_HDMI_TYPE_A: {
sink_caps.transaction_type = DDC_TRANSACTION_TYPE_I2C;
if (aud_support->hdmi_audio_native)
sink_caps.signal = SIGNAL_TYPE_HDMI_TYPE_A;
else
sink_caps.signal = SIGNAL_TYPE_DVI_SINGLE_LINK;
break;
}
case SIGNAL_TYPE_DVI_SINGLE_LINK: {
sink_caps.transaction_type = DDC_TRANSACTION_TYPE_I2C;
sink_caps.signal = SIGNAL_TYPE_DVI_SINGLE_LINK;
break;
}
case SIGNAL_TYPE_DVI_DUAL_LINK: {
sink_caps.transaction_type = DDC_TRANSACTION_TYPE_I2C;
sink_caps.signal = SIGNAL_TYPE_DVI_DUAL_LINK;
break;
}
case SIGNAL_TYPE_LVDS: {
sink_caps.transaction_type = DDC_TRANSACTION_TYPE_I2C;
sink_caps.signal = SIGNAL_TYPE_LVDS;
break;
}
case SIGNAL_TYPE_EDP: {
read_current_link_settings_on_detect(link);
detect_edp_sink_caps(link);
read_current_link_settings_on_detect(link);
sink_caps.transaction_type = DDC_TRANSACTION_TYPE_I2C_OVER_AUX;
sink_caps.signal = SIGNAL_TYPE_EDP;
break;
}
case SIGNAL_TYPE_DISPLAY_PORT: {
/* wa HPD high coming too early*/
if (link->ep_type == DISPLAY_ENDPOINT_PHY &&
link->link_enc->features.flags.bits.DP_IS_USB_C == 1) {
/* if alt mode times out, return false */
if (!wait_for_entering_dp_alt_mode(link))
return false;
}
if (!detect_dp(link, &sink_caps, reason)) {
if (prev_sink)
dc_sink_release(prev_sink);
return false;
}
#if defined(CONFIG_DRM_AMD_DC_DCN)
if (dp_get_link_encoding_format(&link->reported_link_cap) == DP_128b_132b_ENCODING)
add_dp_hpo_link_encoder_to_link(link);
#endif
if (link->type == dc_connection_mst_branch) {
LINK_INFO("link=%d, mst branch is now Connected\n",
link->link_index);
/* Need to setup mst link_cap struct here
* otherwise dc_link_detect() will leave mst link_cap
* empty which leads to allocate_mst_payload() has "0"
* pbn_per_slot value leading to exception on dc_fixpt_div()
*/
dp_verify_mst_link_cap(link);
/*
* This call will initiate MST topology discovery. Which
* will detect MST ports and add new DRM connector DRM
* framework. Then read EDID via remote i2c over aux. In
* the end, will notify DRM detect result and save EDID
* into DRM framework.
*
* .detect is called by .fill_modes.
* .fill_modes is called by user mode ioctl
* DRM_IOCTL_MODE_GETCONNECTOR.
*
* .get_modes is called by .fill_modes.
*
* call .get_modes, AMDGPU DM implementation will create
* new dc_sink and add to dc_link. For long HPD plug
* in/out, MST has its own handle.
*
* Therefore, just after dc_create, link->sink is not
* created for MST until user mode app calls
* DRM_IOCTL_MODE_GETCONNECTOR.
*
* Need check ->sink usages in case ->sink = NULL
* TODO: s3 resume check
*/
dm_helpers_dp_update_branch_info(link->ctx, link);
if (dm_helpers_dp_mst_start_top_mgr(link->ctx,
link, reason == DETECT_REASON_BOOT)) {
if (prev_sink)
dc_sink_release(prev_sink);
return false;
} else {
link->type = dc_connection_sst_branch;
sink_caps.signal = SIGNAL_TYPE_DISPLAY_PORT;
}
}
/* Active SST downstream branch device unplug*/
if (link->type == dc_connection_sst_branch &&
link->dpcd_caps.sink_count.bits.SINK_COUNT == 0) {
if (prev_sink)
/* Downstream unplug */
dc_sink_release(prev_sink);
return true;
}
/* disable audio for non DP to HDMI active sst converter */
if (link->type == dc_connection_sst_branch &&
is_dp_active_dongle(link) &&
(link->dpcd_caps.dongle_type !=
DISPLAY_DONGLE_DP_HDMI_CONVERTER))
converter_disable_audio = true;
// link switch from MST to non-MST stop topology manager
if (pre_connection_type == dc_connection_mst_branch &&
link->type != dc_connection_mst_branch)
dm_helpers_dp_mst_stop_top_mgr(link->ctx, link);
// For seamless boot, to skip verify link cap, we read UEFI settings and set them as verified.
if (reason == DETECT_REASON_BOOT &&
!dc_ctx->dc->config.power_down_display_on_boot &&
link->link_status.link_active)
perform_dp_seamless_boot = true;
if (perform_dp_seamless_boot) {
read_current_link_settings_on_detect(link);
link->verified_link_cap = link->reported_link_cap;
}
break;
}
default:
DC_ERROR("Invalid connector type! signal:%d\n",
link->connector_signal);
if (prev_sink)
dc_sink_release(prev_sink);
return false;
} /* switch() */
if (link->dpcd_caps.sink_count.bits.SINK_COUNT)
link->dpcd_sink_count =
link->dpcd_caps.sink_count.bits.SINK_COUNT;
else
link->dpcd_sink_count = 1;
dal_ddc_service_set_transaction_type(link->ddc,
sink_caps.transaction_type);
link->aux_mode =
dal_ddc_service_is_in_aux_transaction_mode(link->ddc);
sink_init_data.link = link;
sink_init_data.sink_signal = sink_caps.signal;
sink = dc_sink_create(&sink_init_data);
if (!sink) {
DC_ERROR("Failed to create sink!\n");
if (prev_sink)
dc_sink_release(prev_sink);
return false;
}
sink->link->dongle_max_pix_clk = sink_caps.max_hdmi_pixel_clock;
sink->converter_disable_audio = converter_disable_audio;
/* dc_sink_create returns a new reference */
link->local_sink = sink;
edid_status = dm_helpers_read_local_edid(link->ctx,
link, sink);
switch (edid_status) {
case EDID_BAD_CHECKSUM:
DC_LOG_ERROR("EDID checksum invalid.\n");
break;
case EDID_NO_RESPONSE:
DC_LOG_ERROR("No EDID read.\n");
/*
* Abort detection for non-DP connectors if we have
* no EDID
*
* DP needs to report as connected if HDP is high
* even if we have no EDID in order to go to
* fail-safe mode
*/
if (dc_is_hdmi_signal(link->connector_signal) ||
dc_is_dvi_signal(link->connector_signal)) {
if (prev_sink)
dc_sink_release(prev_sink);
return false;
}
break;
default:
break;
}
// Check if edid is the same
if ((prev_sink) &&
(edid_status == EDID_THE_SAME || edid_status == EDID_OK))
same_edid = is_same_edid(&prev_sink->dc_edid,
&sink->dc_edid);
if (sink->edid_caps.panel_patch.skip_scdc_overwrite)
link->ctx->dc->debug.hdmi20_disable = true;
if (link->connector_signal == SIGNAL_TYPE_DISPLAY_PORT &&
sink_caps.transaction_type ==
DDC_TRANSACTION_TYPE_I2C_OVER_AUX) {
/*
* TODO debug why Dell 2413 doesn't like
* two link trainings
*/
#if defined(CONFIG_DRM_AMD_DC_HDCP)
query_hdcp_capability(sink->sink_signal, link);
#endif
// verify link cap for SST non-seamless boot
if (!perform_dp_seamless_boot)
dp_verify_link_cap_with_retries(link,
&link->reported_link_cap,
LINK_TRAINING_MAX_VERIFY_RETRY);
} else {
// If edid is the same, then discard new sink and revert back to original sink
if (same_edid) {
link_disconnect_remap(prev_sink, link);
sink = prev_sink;
prev_sink = NULL;
}
#if defined(CONFIG_DRM_AMD_DC_HDCP)
query_hdcp_capability(sink->sink_signal, link);
#endif
}
/* HDMI-DVI Dongle */
if (sink->sink_signal == SIGNAL_TYPE_HDMI_TYPE_A &&
!sink->edid_caps.edid_hdmi)
sink->sink_signal = SIGNAL_TYPE_DVI_SINGLE_LINK;
/* Connectivity log: detection */
for (i = 0; i < sink->dc_edid.length / DC_EDID_BLOCK_SIZE; i++) {
CONN_DATA_DETECT(link,
&sink->dc_edid.raw_edid[i * DC_EDID_BLOCK_SIZE],
DC_EDID_BLOCK_SIZE,
"%s: [Block %d] ", sink->edid_caps.display_name, i);
}
DC_LOG_DETECTION_EDID_PARSER("%s: "
"manufacturer_id = %X, "
"product_id = %X, "
"serial_number = %X, "
"manufacture_week = %d, "
"manufacture_year = %d, "
"display_name = %s, "
"speaker_flag = %d, "
"audio_mode_count = %d\n",
__func__,
sink->edid_caps.manufacturer_id,
sink->edid_caps.product_id,
sink->edid_caps.serial_number,
sink->edid_caps.manufacture_week,
sink->edid_caps.manufacture_year,
sink->edid_caps.display_name,
sink->edid_caps.speaker_flags,
sink->edid_caps.audio_mode_count);
for (i = 0; i < sink->edid_caps.audio_mode_count; i++) {
DC_LOG_DETECTION_EDID_PARSER("%s: mode number = %d, "
"format_code = %d, "
"channel_count = %d, "
"sample_rate = %d, "
"sample_size = %d\n",
__func__,
i,
sink->edid_caps.audio_modes[i].format_code,
sink->edid_caps.audio_modes[i].channel_count,
sink->edid_caps.audio_modes[i].sample_rate,
sink->edid_caps.audio_modes[i].sample_size);
}
} else {
/* From Connected-to-Disconnected. */
if (link->type == dc_connection_mst_branch) {
LINK_INFO("link=%d, mst branch is now Disconnected\n",
link->link_index);
dm_helpers_dp_mst_stop_top_mgr(link->ctx, link);
link->mst_stream_alloc_table.stream_count = 0;
memset(link->mst_stream_alloc_table.stream_allocations,
0,
sizeof(link->mst_stream_alloc_table.stream_allocations));
}
#if defined(CONFIG_DRM_AMD_DC_DCN)
if (dp_get_link_encoding_format(&link->cur_link_settings) == DP_128b_132b_ENCODING)
reset_dp_hpo_stream_encoders_for_link(link);
#endif
link->type = dc_connection_none;
sink_caps.signal = SIGNAL_TYPE_NONE;
/* When we unplug a passive DP-HDMI dongle connection, dongle_max_pix_clk
* is not cleared. If we emulate a DP signal on this connection, it thinks
* the dongle is still there and limits the number of modes we can emulate.
* Clear dongle_max_pix_clk on disconnect to fix this
*/
link->dongle_max_pix_clk = 0;
}
LINK_INFO("link=%d, dc_sink_in=%p is now %s prev_sink=%p edid same=%d\n",
link->link_index, sink,
(sink_caps.signal ==
SIGNAL_TYPE_NONE ? "Disconnected" : "Connected"),
prev_sink, same_edid);
if (prev_sink)
dc_sink_release(prev_sink);
return true;
}
bool dc_link_detect(struct dc_link *link, enum dc_detect_reason reason)
{
const struct dc *dc = link->dc;
bool ret;
bool can_apply_seamless_boot = false;
int i;
for (i = 0; i < dc->current_state->stream_count; i++) {
if (dc->current_state->streams[i]->apply_seamless_boot_optimization) {
can_apply_seamless_boot = true;
break;
}
}
#if defined(CONFIG_DRM_AMD_DC_DCN)
dc_z10_restore(dc);
#endif
/* get out of low power state */
if (!can_apply_seamless_boot && reason != DETECT_REASON_BOOT)
clk_mgr_exit_optimized_pwr_state(dc, dc->clk_mgr);
ret = dc_link_detect_helper(link, reason);
/* Go back to power optimized state */
if (!can_apply_seamless_boot && reason != DETECT_REASON_BOOT)
clk_mgr_optimize_pwr_state(dc, dc->clk_mgr);
return ret;
}
bool dc_link_get_hpd_state(struct dc_link *dc_link)
{
uint32_t state;
dal_gpio_lock_pin(dc_link->hpd_gpio);
dal_gpio_get_value(dc_link->hpd_gpio, &state);
dal_gpio_unlock_pin(dc_link->hpd_gpio);
return state;
}
static enum hpd_source_id get_hpd_line(struct dc_link *link)
{
struct gpio *hpd;
enum hpd_source_id hpd_id = HPD_SOURCEID_UNKNOWN;
hpd = get_hpd_gpio(link->ctx->dc_bios, link->link_id,
link->ctx->gpio_service);
if (hpd) {
switch (dal_irq_get_source(hpd)) {
case DC_IRQ_SOURCE_HPD1:
hpd_id = HPD_SOURCEID1;
break;
case DC_IRQ_SOURCE_HPD2:
hpd_id = HPD_SOURCEID2;
break;
case DC_IRQ_SOURCE_HPD3:
hpd_id = HPD_SOURCEID3;
break;
case DC_IRQ_SOURCE_HPD4:
hpd_id = HPD_SOURCEID4;
break;
case DC_IRQ_SOURCE_HPD5:
hpd_id = HPD_SOURCEID5;
break;
case DC_IRQ_SOURCE_HPD6:
hpd_id = HPD_SOURCEID6;
break;
default:
BREAK_TO_DEBUGGER();
break;
}
dal_gpio_destroy_irq(&hpd);
}
return hpd_id;
}
static enum channel_id get_ddc_line(struct dc_link *link)
{
struct ddc *ddc;
enum channel_id channel = CHANNEL_ID_UNKNOWN;
ddc = dal_ddc_service_get_ddc_pin(link->ddc);
if (ddc) {
switch (dal_ddc_get_line(ddc)) {
case GPIO_DDC_LINE_DDC1:
channel = CHANNEL_ID_DDC1;
break;
case GPIO_DDC_LINE_DDC2:
channel = CHANNEL_ID_DDC2;
break;
case GPIO_DDC_LINE_DDC3:
channel = CHANNEL_ID_DDC3;
break;
case GPIO_DDC_LINE_DDC4:
channel = CHANNEL_ID_DDC4;
break;
case GPIO_DDC_LINE_DDC5:
channel = CHANNEL_ID_DDC5;
break;
case GPIO_DDC_LINE_DDC6:
channel = CHANNEL_ID_DDC6;
break;
case GPIO_DDC_LINE_DDC_VGA:
channel = CHANNEL_ID_DDC_VGA;
break;
case GPIO_DDC_LINE_I2C_PAD:
channel = CHANNEL_ID_I2C_PAD;
break;
default:
BREAK_TO_DEBUGGER();
break;
}
}
return channel;
}
static enum transmitter translate_encoder_to_transmitter(struct graphics_object_id encoder)
{
switch (encoder.id) {
case ENCODER_ID_INTERNAL_UNIPHY:
switch (encoder.enum_id) {
case ENUM_ID_1:
return TRANSMITTER_UNIPHY_A;
case ENUM_ID_2:
return TRANSMITTER_UNIPHY_B;
default:
return TRANSMITTER_UNKNOWN;
}
break;
case ENCODER_ID_INTERNAL_UNIPHY1:
switch (encoder.enum_id) {
case ENUM_ID_1:
return TRANSMITTER_UNIPHY_C;
case ENUM_ID_2:
return TRANSMITTER_UNIPHY_D;
default:
return TRANSMITTER_UNKNOWN;
}
break;
case ENCODER_ID_INTERNAL_UNIPHY2:
switch (encoder.enum_id) {
case ENUM_ID_1:
return TRANSMITTER_UNIPHY_E;
case ENUM_ID_2:
return TRANSMITTER_UNIPHY_F;
default:
return TRANSMITTER_UNKNOWN;
}
break;
case ENCODER_ID_INTERNAL_UNIPHY3:
switch (encoder.enum_id) {
case ENUM_ID_1:
return TRANSMITTER_UNIPHY_G;
default:
return TRANSMITTER_UNKNOWN;
}
break;
case ENCODER_ID_EXTERNAL_NUTMEG:
switch (encoder.enum_id) {
case ENUM_ID_1:
return TRANSMITTER_NUTMEG_CRT;
default:
return TRANSMITTER_UNKNOWN;
}
break;
case ENCODER_ID_EXTERNAL_TRAVIS:
switch (encoder.enum_id) {
case ENUM_ID_1:
return TRANSMITTER_TRAVIS_CRT;
case ENUM_ID_2:
return TRANSMITTER_TRAVIS_LCD;
default:
return TRANSMITTER_UNKNOWN;
}
break;
default:
return TRANSMITTER_UNKNOWN;
}
}
static bool dc_link_construct_legacy(struct dc_link *link,
const struct link_init_data *init_params)
{
uint8_t i;
struct ddc_service_init_data ddc_service_init_data = { { 0 } };
struct dc_context *dc_ctx = init_params->ctx;
struct encoder_init_data enc_init_data = { 0 };
struct panel_cntl_init_data panel_cntl_init_data = { 0 };
struct integrated_info *info;
struct dc_bios *bios = init_params->dc->ctx->dc_bios;
const struct dc_vbios_funcs *bp_funcs = bios->funcs;
struct bp_disp_connector_caps_info disp_connect_caps_info = { 0 };
DC_LOGGER_INIT(dc_ctx->logger);
info = kzalloc(sizeof(*info), GFP_KERNEL);
if (!info)
goto create_fail;
link->irq_source_hpd = DC_IRQ_SOURCE_INVALID;
link->irq_source_hpd_rx = DC_IRQ_SOURCE_INVALID;
link->link_status.dpcd_caps = &link->dpcd_caps;
link->dc = init_params->dc;
link->ctx = dc_ctx;
link->link_index = init_params->link_index;
memset(&link->preferred_training_settings, 0,
sizeof(struct dc_link_training_overrides));
memset(&link->preferred_link_setting, 0,
sizeof(struct dc_link_settings));
link->link_id =
bios->funcs->get_connector_id(bios, init_params->connector_index);
link->ep_type = DISPLAY_ENDPOINT_PHY;
DC_LOG_DC("BIOS object table - link_id: %d", link->link_id.id);
if (bios->funcs->get_disp_connector_caps_info) {
bios->funcs->get_disp_connector_caps_info(bios, link->link_id, &disp_connect_caps_info);
link->is_internal_display = disp_connect_caps_info.INTERNAL_DISPLAY;
DC_LOG_DC("BIOS object table - is_internal_display: %d", link->is_internal_display);
}
if (link->link_id.type != OBJECT_TYPE_CONNECTOR) {
dm_output_to_console("%s: Invalid Connector ObjectID from Adapter Service for connector index:%d! type %d expected %d\n",
__func__, init_params->connector_index,
link->link_id.type, OBJECT_TYPE_CONNECTOR);
goto create_fail;
}
if (link->dc->res_pool->funcs->link_init)
link->dc->res_pool->funcs->link_init(link);
link->hpd_gpio = get_hpd_gpio(link->ctx->dc_bios, link->link_id,
link->ctx->gpio_service);
if (link->hpd_gpio) {
dal_gpio_open(link->hpd_gpio, GPIO_MODE_INTERRUPT);
dal_gpio_unlock_pin(link->hpd_gpio);
link->irq_source_hpd = dal_irq_get_source(link->hpd_gpio);
DC_LOG_DC("BIOS object table - hpd_gpio id: %d", link->hpd_gpio->id);
DC_LOG_DC("BIOS object table - hpd_gpio en: %d", link->hpd_gpio->en);
}
switch (link->link_id.id) {
case CONNECTOR_ID_HDMI_TYPE_A:
link->connector_signal = SIGNAL_TYPE_HDMI_TYPE_A;
break;
case CONNECTOR_ID_SINGLE_LINK_DVID:
case CONNECTOR_ID_SINGLE_LINK_DVII:
link->connector_signal = SIGNAL_TYPE_DVI_SINGLE_LINK;
break;
case CONNECTOR_ID_DUAL_LINK_DVID:
case CONNECTOR_ID_DUAL_LINK_DVII:
link->connector_signal = SIGNAL_TYPE_DVI_DUAL_LINK;
break;
case CONNECTOR_ID_DISPLAY_PORT:
link->connector_signal = SIGNAL_TYPE_DISPLAY_PORT;
if (link->hpd_gpio)
link->irq_source_hpd_rx =
dal_irq_get_rx_source(link->hpd_gpio);
break;
case CONNECTOR_ID_EDP:
link->connector_signal = SIGNAL_TYPE_EDP;
if (link->hpd_gpio) {
if (!link->dc->config.allow_edp_hotplug_detection)
link->irq_source_hpd = DC_IRQ_SOURCE_INVALID;
link->irq_source_hpd_rx =
dal_irq_get_rx_source(link->hpd_gpio);
}
break;
case CONNECTOR_ID_LVDS:
link->connector_signal = SIGNAL_TYPE_LVDS;
break;
default:
DC_LOG_WARNING("Unsupported Connector type:%d!\n",
link->link_id.id);
goto create_fail;
}
/* TODO: #DAL3 Implement id to str function.*/
LINK_INFO("Connector[%d] description:"
"signal %d\n",
init_params->connector_index,
link->connector_signal);
ddc_service_init_data.ctx = link->ctx;
ddc_service_init_data.id = link->link_id;
ddc_service_init_data.link = link;
link->ddc = dal_ddc_service_create(&ddc_service_init_data);
if (!link->ddc) {
DC_ERROR("Failed to create ddc_service!\n");
goto ddc_create_fail;
}
if (!link->ddc->ddc_pin) {
DC_ERROR("Failed to get I2C info for connector!\n");
goto ddc_create_fail;
}
link->ddc_hw_inst =
dal_ddc_get_line(dal_ddc_service_get_ddc_pin(link->ddc));
if (link->dc->res_pool->funcs->panel_cntl_create &&
(link->link_id.id == CONNECTOR_ID_EDP ||
link->link_id.id == CONNECTOR_ID_LVDS)) {
panel_cntl_init_data.ctx = dc_ctx;
panel_cntl_init_data.inst =
panel_cntl_init_data.ctx->dc_edp_id_count;
link->panel_cntl =
link->dc->res_pool->funcs->panel_cntl_create(
&panel_cntl_init_data);
panel_cntl_init_data.ctx->dc_edp_id_count++;
if (link->panel_cntl == NULL) {
DC_ERROR("Failed to create link panel_cntl!\n");
goto panel_cntl_create_fail;
}
}
enc_init_data.ctx = dc_ctx;
bp_funcs->get_src_obj(dc_ctx->dc_bios, link->link_id, 0,
&enc_init_data.encoder);
enc_init_data.connector = link->link_id;
enc_init_data.channel = get_ddc_line(link);
enc_init_data.hpd_source = get_hpd_line(link);
link->hpd_src = enc_init_data.hpd_source;
enc_init_data.transmitter =
translate_encoder_to_transmitter(enc_init_data.encoder);
link->link_enc =
link->dc->res_pool->funcs->link_enc_create(&enc_init_data);
if (!link->link_enc) {
DC_ERROR("Failed to create link encoder!\n");
goto link_enc_create_fail;
}
DC_LOG_DC("BIOS object table - DP_IS_USB_C: %d", link->link_enc->features.flags.bits.DP_IS_USB_C);
#if defined(CONFIG_DRM_AMD_DC_DCN)
DC_LOG_DC("BIOS object table - IS_DP2_CAPABLE: %d", link->link_enc->features.flags.bits.IS_DP2_CAPABLE);
#endif
/* Update link encoder tracking variables. These are used for the dynamic
* assignment of link encoders to streams.
*/
link->eng_id = link->link_enc->preferred_engine;
link->dc->res_pool->link_encoders[link->eng_id - ENGINE_ID_DIGA] = link->link_enc;
link->dc->res_pool->dig_link_enc_count++;
link->link_enc_hw_inst = link->link_enc->transmitter;
for (i = 0; i < 4; i++) {
if (bp_funcs->get_device_tag(dc_ctx->dc_bios,
link->link_id, i,
&link->device_tag) != BP_RESULT_OK) {
DC_ERROR("Failed to find device tag!\n");
goto device_tag_fail;
}
/* Look for device tag that matches connector signal,
* CRT for rgb, LCD for other supported signal tyes
*/
if (!bp_funcs->is_device_id_supported(dc_ctx->dc_bios,
link->device_tag.dev_id))
continue;
if (link->device_tag.dev_id.device_type == DEVICE_TYPE_CRT &&
link->connector_signal != SIGNAL_TYPE_RGB)
continue;
if (link->device_tag.dev_id.device_type == DEVICE_TYPE_LCD &&
link->connector_signal == SIGNAL_TYPE_RGB)
continue;
DC_LOG_DC("BIOS object table - device_tag.acpi_device: %d", link->device_tag.acpi_device);
DC_LOG_DC("BIOS object table - device_tag.dev_id.device_type: %d", link->device_tag.dev_id.device_type);
DC_LOG_DC("BIOS object table - device_tag.dev_id.enum_id: %d", link->device_tag.dev_id.enum_id);
break;
}
if (bios->integrated_info)
memcpy(info, bios->integrated_info, sizeof(*info));
/* Look for channel mapping corresponding to connector and device tag */
for (i = 0; i < MAX_NUMBER_OF_EXT_DISPLAY_PATH; i++) {
struct external_display_path *path =
&info->ext_disp_conn_info.path[i];
if (path->device_connector_id.enum_id == link->link_id.enum_id &&
path->device_connector_id.id == link->link_id.id &&
path->device_connector_id.type == link->link_id.type) {
if (link->device_tag.acpi_device != 0 &&
path->device_acpi_enum == link->device_tag.acpi_device) {
link->ddi_channel_mapping = path->channel_mapping;
link->chip_caps = path->caps;
DC_LOG_DC("BIOS object table - ddi_channel_mapping: 0x%04X", link->ddi_channel_mapping.raw);
DC_LOG_DC("BIOS object table - chip_caps: %d", link->chip_caps);
} else if (path->device_tag ==
link->device_tag.dev_id.raw_device_tag) {
link->ddi_channel_mapping = path->channel_mapping;
link->chip_caps = path->caps;
DC_LOG_DC("BIOS object table - ddi_channel_mapping: 0x%04X", link->ddi_channel_mapping.raw);
DC_LOG_DC("BIOS object table - chip_caps: %d", link->chip_caps);
}
if (link->chip_caps & EXT_DISPLAY_PATH_CAPS__DP_FIXED_VS_EN) {
link->bios_forced_drive_settings.VOLTAGE_SWING =
(info->ext_disp_conn_info.fixdpvoltageswing & 0x3);
link->bios_forced_drive_settings.PRE_EMPHASIS =
((info->ext_disp_conn_info.fixdpvoltageswing >> 2) & 0x3);
}
break;
}
}
if (bios->funcs->get_atom_dc_golden_table)
bios->funcs->get_atom_dc_golden_table(bios);
/*
* TODO check if GPIO programmed correctly
*
* If GPIO isn't programmed correctly HPD might not rise or drain
* fast enough, leading to bounces.
*/
program_hpd_filter(link);
link->psr_settings.psr_version = DC_PSR_VERSION_UNSUPPORTED;
DC_LOG_DC("BIOS object table - %s finished successfully.\n", __func__);
kfree(info);
return true;
device_tag_fail:
link->link_enc->funcs->destroy(&link->link_enc);
link_enc_create_fail:
if (link->panel_cntl != NULL)
link->panel_cntl->funcs->destroy(&link->panel_cntl);
panel_cntl_create_fail:
dal_ddc_service_destroy(&link->ddc);
ddc_create_fail:
create_fail:
if (link->hpd_gpio) {
dal_gpio_destroy_irq(&link->hpd_gpio);
link->hpd_gpio = NULL;
}
DC_LOG_DC("BIOS object table - %s failed.\n", __func__);
kfree(info);
return false;
}
static bool dc_link_construct_dpia(struct dc_link *link,
const struct link_init_data *init_params)
{
struct ddc_service_init_data ddc_service_init_data = { { 0 } };
struct dc_context *dc_ctx = init_params->ctx;
DC_LOGGER_INIT(dc_ctx->logger);
/* Initialized irq source for hpd and hpd rx */
link->irq_source_hpd = DC_IRQ_SOURCE_INVALID;
link->irq_source_hpd_rx = DC_IRQ_SOURCE_INVALID;
link->link_status.dpcd_caps = &link->dpcd_caps;
link->dc = init_params->dc;
link->ctx = dc_ctx;
link->link_index = init_params->link_index;
memset(&link->preferred_training_settings, 0,
sizeof(struct dc_link_training_overrides));
memset(&link->preferred_link_setting, 0,
sizeof(struct dc_link_settings));
/* Dummy Init for linkid */
link->link_id.type = OBJECT_TYPE_CONNECTOR;
link->link_id.id = CONNECTOR_ID_DISPLAY_PORT;
link->link_id.enum_id = ENUM_ID_1 + init_params->connector_index;
link->is_internal_display = false;
link->connector_signal = SIGNAL_TYPE_DISPLAY_PORT;
LINK_INFO("Connector[%d] description:signal %d\n",
init_params->connector_index,
link->connector_signal);
link->ep_type = DISPLAY_ENDPOINT_USB4_DPIA;
link->is_dig_mapping_flexible = true;
/* TODO: Initialize link : funcs->link_init */
ddc_service_init_data.ctx = link->ctx;
ddc_service_init_data.id = link->link_id;
ddc_service_init_data.link = link;
/* Set indicator for dpia link so that ddc won't be created */
ddc_service_init_data.is_dpia_link = true;
link->ddc = dal_ddc_service_create(&ddc_service_init_data);
if (!link->ddc) {
DC_ERROR("Failed to create ddc_service!\n");
goto ddc_create_fail;
}
/* Set dpia port index : 0 to number of dpia ports */
link->ddc_hw_inst = init_params->connector_index;
/* TODO: Create link encoder */
link->psr_settings.psr_version = DC_PSR_VERSION_UNSUPPORTED;
/* Some docks seem to NAK I2C writes to segment pointer with mot=0. */
link->wa_flags.dp_mot_reset_segment = true;
return true;
ddc_create_fail:
return false;
}
static bool dc_link_construct(struct dc_link *link,
const struct link_init_data *init_params)
{
/* Handle dpia case */
if (init_params->is_dpia_link)
return dc_link_construct_dpia(link, init_params);
else
return dc_link_construct_legacy(link, init_params);
}
/*******************************************************************************
* Public functions
******************************************************************************/
struct dc_link *link_create(const struct link_init_data *init_params)
{
struct dc_link *link =
kzalloc(sizeof(*link), GFP_KERNEL);
if (NULL == link)
goto alloc_fail;
if (false == dc_link_construct(link, init_params))
goto construct_fail;
/*
* Must use preferred_link_setting, not reported_link_cap or verified_link_cap,
* since struct preferred_link_setting won't be reset after S3.
*/
link->preferred_link_setting.dpcd_source_device_specific_field_support = true;
return link;
construct_fail:
kfree(link);
alloc_fail:
return NULL;
}
void link_destroy(struct dc_link **link)
{
dc_link_destruct(*link);
kfree(*link);
*link = NULL;
}
static void enable_stream_features(struct pipe_ctx *pipe_ctx)
{
struct dc_stream_state *stream = pipe_ctx->stream;
if (pipe_ctx->stream->signal != SIGNAL_TYPE_DISPLAY_PORT_MST) {
struct dc_link *link = stream->link;
union down_spread_ctrl old_downspread;
union down_spread_ctrl new_downspread;
core_link_read_dpcd(link, DP_DOWNSPREAD_CTRL,
&old_downspread.raw, sizeof(old_downspread));
new_downspread.raw = old_downspread.raw;
new_downspread.bits.IGNORE_MSA_TIMING_PARAM =
(stream->ignore_msa_timing_param) ? 1 : 0;
if (new_downspread.raw != old_downspread.raw) {
core_link_write_dpcd(link, DP_DOWNSPREAD_CTRL,
&new_downspread.raw, sizeof(new_downspread));
}
} else {
dm_helpers_mst_enable_stream_features(stream);
}
}
static enum dc_status enable_link_dp(struct dc_state *state,
struct pipe_ctx *pipe_ctx)
{
struct dc_stream_state *stream = pipe_ctx->stream;
enum dc_status status;
bool skip_video_pattern;
struct dc_link *link = stream->link;
struct dc_link_settings link_settings = {0};
bool fec_enable;
int i;
bool apply_seamless_boot_optimization = false;
uint32_t bl_oled_enable_delay = 50; // in ms
const uint32_t post_oui_delay = 30; // 30ms
/* Reduce link bandwidth between failed link training attempts. */
bool do_fallback = false;
// check for seamless boot
for (i = 0; i < state->stream_count; i++) {
if (state->streams[i]->apply_seamless_boot_optimization) {
apply_seamless_boot_optimization = true;
break;
}
}
/* get link settings for video mode timing */
decide_link_settings(stream, &link_settings);
/* Train with fallback when enabling DPIA link. Conventional links are
* trained with fallback during sink detection.
*/
if (link->ep_type == DISPLAY_ENDPOINT_USB4_DPIA)
do_fallback = true;
#if defined(CONFIG_DRM_AMD_DC_DCN)
/*
* Temporary w/a to get DP2.0 link rates to work with SST.
* TODO DP2.0 - Workaround: Remove w/a if and when the issue is resolved.
*/
if (dp_get_link_encoding_format(&link_settings) == DP_128b_132b_ENCODING &&
pipe_ctx->stream->signal == SIGNAL_TYPE_DISPLAY_PORT &&
link->dc->debug.set_mst_en_for_sst) {
dp_enable_mst_on_sink(link, true);
}
#endif
if (pipe_ctx->stream->signal == SIGNAL_TYPE_EDP) {
/*in case it is not on*/
link->dc->hwss.edp_power_control(link, true);
link->dc->hwss.edp_wait_for_hpd_ready(link, true);
}
#if defined(CONFIG_DRM_AMD_DC_DCN)
if (dp_get_link_encoding_format(&link_settings) == DP_128b_132b_ENCODING) {
/* TODO - DP2.0 HW: calculate 32 symbol clock for HPO encoder */
} else {
pipe_ctx->stream_res.pix_clk_params.requested_sym_clk =
link_settings.link_rate * LINK_RATE_REF_FREQ_IN_KHZ;
if (state->clk_mgr && !apply_seamless_boot_optimization)
state->clk_mgr->funcs->update_clocks(state->clk_mgr,
state, false);
}
#else
pipe_ctx->stream_res.pix_clk_params.requested_sym_clk =
link_settings.link_rate * LINK_RATE_REF_FREQ_IN_KHZ;
if (state->clk_mgr && !apply_seamless_boot_optimization)
state->clk_mgr->funcs->update_clocks(state->clk_mgr,
state, false);
#endif
// during mode switch we do DP_SET_POWER off then on, and OUI is lost
dpcd_set_source_specific_data(link);
if (link->dpcd_sink_ext_caps.raw != 0)
msleep(post_oui_delay);
skip_video_pattern = true;
if (link_settings.link_rate == LINK_RATE_LOW)
skip_video_pattern = false;
if (perform_link_training_with_retries(&link_settings,
skip_video_pattern,
LINK_TRAINING_ATTEMPTS,
pipe_ctx,
pipe_ctx->stream->signal,
do_fallback)) {
link->cur_link_settings = link_settings;
status = DC_OK;
} else {
status = DC_FAIL_DP_LINK_TRAINING;
}
if (link->preferred_training_settings.fec_enable)
fec_enable = *link->preferred_training_settings.fec_enable;
else
fec_enable = true;
#if defined(CONFIG_DRM_AMD_DC_DCN)
if (dp_get_link_encoding_format(&link_settings) == DP_8b_10b_ENCODING)
dp_set_fec_enable(link, fec_enable);
#else
dp_set_fec_enable(link, fec_enable);
#endif
// during mode set we do DP_SET_POWER off then on, aux writes are lost
if (link->dpcd_sink_ext_caps.bits.oled == 1 ||
link->dpcd_sink_ext_caps.bits.sdr_aux_backlight_control == 1 ||
link->dpcd_sink_ext_caps.bits.hdr_aux_backlight_control == 1) {
dc_link_set_default_brightness_aux(link); // TODO: use cached if known
if (link->dpcd_sink_ext_caps.bits.oled == 1)
msleep(bl_oled_enable_delay);
dc_link_backlight_enable_aux(link, true);
}
return status;
}
static enum dc_status enable_link_edp(
struct dc_state *state,
struct pipe_ctx *pipe_ctx)
{
enum dc_status status;
status = enable_link_dp(state, pipe_ctx);
return status;
}
static enum dc_status enable_link_dp_mst(
struct dc_state *state,
struct pipe_ctx *pipe_ctx)
{
struct dc_link *link = pipe_ctx->stream->link;
/* sink signal type after MST branch is MST. Multiple MST sinks
* share one link. Link DP PHY is enable or training only once.
*/
if (link->link_status.link_active)
return DC_OK;
/* clear payload table */
dm_helpers_dp_mst_clear_payload_allocation_table(link->ctx, link);
/* to make sure the pending down rep can be processed
* before enabling the link
*/
dm_helpers_dp_mst_poll_pending_down_reply(link->ctx, link);
/* set the sink to MST mode before enabling the link */
dp_enable_mst_on_sink(link, true);
return enable_link_dp(state, pipe_ctx);
}
static bool get_ext_hdmi_settings(struct pipe_ctx *pipe_ctx,
enum engine_id eng_id,
struct ext_hdmi_settings *settings)
{
bool result = false;
int i = 0;
struct integrated_info *integrated_info =
pipe_ctx->stream->ctx->dc_bios->integrated_info;
if (integrated_info == NULL)
return false;
/*
* Get retimer settings from sbios for passing SI eye test for DCE11
* The setting values are varied based on board revision and port id
* Therefore the setting values of each ports is passed by sbios.
*/
// Check if current bios contains ext Hdmi settings
if (integrated_info->gpu_cap_info & 0x20) {
switch (eng_id) {
case ENGINE_ID_DIGA:
settings->slv_addr = integrated_info->dp0_ext_hdmi_slv_addr;
settings->reg_num = integrated_info->dp0_ext_hdmi_6g_reg_num;
settings->reg_num_6g = integrated_info->dp0_ext_hdmi_6g_reg_num;
memmove(settings->reg_settings,
integrated_info->dp0_ext_hdmi_reg_settings,
sizeof(integrated_info->dp0_ext_hdmi_reg_settings));
memmove(settings->reg_settings_6g,
integrated_info->dp0_ext_hdmi_6g_reg_settings,
sizeof(integrated_info->dp0_ext_hdmi_6g_reg_settings));
result = true;
break;
case ENGINE_ID_DIGB:
settings->slv_addr = integrated_info->dp1_ext_hdmi_slv_addr;
settings->reg_num = integrated_info->dp1_ext_hdmi_6g_reg_num;
settings->reg_num_6g = integrated_info->dp1_ext_hdmi_6g_reg_num;
memmove(settings->reg_settings,
integrated_info->dp1_ext_hdmi_reg_settings,
sizeof(integrated_info->dp1_ext_hdmi_reg_settings));
memmove(settings->reg_settings_6g,
integrated_info->dp1_ext_hdmi_6g_reg_settings,
sizeof(integrated_info->dp1_ext_hdmi_6g_reg_settings));
result = true;
break;
case ENGINE_ID_DIGC:
settings->slv_addr = integrated_info->dp2_ext_hdmi_slv_addr;
settings->reg_num = integrated_info->dp2_ext_hdmi_6g_reg_num;
settings->reg_num_6g = integrated_info->dp2_ext_hdmi_6g_reg_num;
memmove(settings->reg_settings,
integrated_info->dp2_ext_hdmi_reg_settings,
sizeof(integrated_info->dp2_ext_hdmi_reg_settings));
memmove(settings->reg_settings_6g,
integrated_info->dp2_ext_hdmi_6g_reg_settings,
sizeof(integrated_info->dp2_ext_hdmi_6g_reg_settings));
result = true;
break;
case ENGINE_ID_DIGD:
settings->slv_addr = integrated_info->dp3_ext_hdmi_slv_addr;
settings->reg_num = integrated_info->dp3_ext_hdmi_6g_reg_num;
settings->reg_num_6g = integrated_info->dp3_ext_hdmi_6g_reg_num;
memmove(settings->reg_settings,
integrated_info->dp3_ext_hdmi_reg_settings,
sizeof(integrated_info->dp3_ext_hdmi_reg_settings));
memmove(settings->reg_settings_6g,
integrated_info->dp3_ext_hdmi_6g_reg_settings,
sizeof(integrated_info->dp3_ext_hdmi_6g_reg_settings));
result = true;
break;
default:
break;
}
if (result == true) {
// Validate settings from bios integrated info table
if (settings->slv_addr == 0)
return false;
if (settings->reg_num > 9)
return false;
if (settings->reg_num_6g > 3)
return false;
for (i = 0; i < settings->reg_num; i++) {
if (settings->reg_settings[i].i2c_reg_index > 0x20)
return false;
}
for (i = 0; i < settings->reg_num_6g; i++) {
if (settings->reg_settings_6g[i].i2c_reg_index > 0x20)
return false;
}
}
}
return result;
}
static bool i2c_write(struct pipe_ctx *pipe_ctx,
uint8_t address, uint8_t *buffer, uint32_t length)
{
struct i2c_command cmd = {0};
struct i2c_payload payload = {0};
memset(&payload, 0, sizeof(payload));
memset(&cmd, 0, sizeof(cmd));
cmd.number_of_payloads = 1;
cmd.engine = I2C_COMMAND_ENGINE_DEFAULT;
cmd.speed = pipe_ctx->stream->ctx->dc->caps.i2c_speed_in_khz;
payload.address = address;
payload.data = buffer;
payload.length = length;
payload.write = true;
cmd.payloads = &payload;
if (dm_helpers_submit_i2c(pipe_ctx->stream->ctx,
pipe_ctx->stream->link, &cmd))
return true;
return false;
}
static void write_i2c_retimer_setting(
struct pipe_ctx *pipe_ctx,
bool is_vga_mode,
bool is_over_340mhz,
struct ext_hdmi_settings *settings)
{
uint8_t slave_address = (settings->slv_addr >> 1);
uint8_t buffer[2];
const uint8_t apply_rx_tx_change = 0x4;
uint8_t offset = 0xA;
uint8_t value = 0;
int i = 0;
bool i2c_success = false;
DC_LOGGER_INIT(pipe_ctx->stream->ctx->logger);
memset(&buffer, 0, sizeof(buffer));
/* Start Ext-Hdmi programming*/
for (i = 0; i < settings->reg_num; i++) {
/* Apply 3G settings */
if (settings->reg_settings[i].i2c_reg_index <= 0x20) {
buffer[0] = settings->reg_settings[i].i2c_reg_index;
buffer[1] = settings->reg_settings[i].i2c_reg_val;
i2c_success = i2c_write(pipe_ctx, slave_address,
buffer, sizeof(buffer));
RETIMER_REDRIVER_INFO("retimer write to slave_address = 0x%x,\
offset = 0x%x, reg_val= 0x%x, i2c_success = %d\n",
slave_address, buffer[0], buffer[1], i2c_success?1:0);
if (!i2c_success)
goto i2c_write_fail;
/* Based on DP159 specs, APPLY_RX_TX_CHANGE bit in 0x0A
* needs to be set to 1 on every 0xA-0xC write.
*/
if (settings->reg_settings[i].i2c_reg_index == 0xA ||
settings->reg_settings[i].i2c_reg_index == 0xB ||
settings->reg_settings[i].i2c_reg_index == 0xC) {
/* Query current value from offset 0xA */
if (settings->reg_settings[i].i2c_reg_index == 0xA)
value = settings->reg_settings[i].i2c_reg_val;
else {
i2c_success =
dal_ddc_service_query_ddc_data(
pipe_ctx->stream->link->ddc,
slave_address, &offset, 1, &value, 1);
if (!i2c_success)
goto i2c_write_fail;
}
buffer[0] = offset;
/* Set APPLY_RX_TX_CHANGE bit to 1 */
buffer[1] = value | apply_rx_tx_change;
i2c_success = i2c_write(pipe_ctx, slave_address,
buffer, sizeof(buffer));
RETIMER_REDRIVER_INFO("retimer write to slave_address = 0x%x,\
offset = 0x%x, reg_val = 0x%x, i2c_success = %d\n",
slave_address, buffer[0], buffer[1], i2c_success?1:0);
if (!i2c_success)
goto i2c_write_fail;
}
}
}
/* Apply 3G settings */
if (is_over_340mhz) {
for (i = 0; i < settings->reg_num_6g; i++) {
/* Apply 3G settings */
if (settings->reg_settings[i].i2c_reg_index <= 0x20) {
buffer[0] = settings->reg_settings_6g[i].i2c_reg_index;
buffer[1] = settings->reg_settings_6g[i].i2c_reg_val;
i2c_success = i2c_write(pipe_ctx, slave_address,
buffer, sizeof(buffer));
RETIMER_REDRIVER_INFO("above 340Mhz: retimer write to slave_address = 0x%x,\
offset = 0x%x, reg_val = 0x%x, i2c_success = %d\n",
slave_address, buffer[0], buffer[1], i2c_success?1:0);
if (!i2c_success)
goto i2c_write_fail;
/* Based on DP159 specs, APPLY_RX_TX_CHANGE bit in 0x0A
* needs to be set to 1 on every 0xA-0xC write.
*/
if (settings->reg_settings_6g[i].i2c_reg_index == 0xA ||
settings->reg_settings_6g[i].i2c_reg_index == 0xB ||
settings->reg_settings_6g[i].i2c_reg_index == 0xC) {
/* Query current value from offset 0xA */
if (settings->reg_settings_6g[i].i2c_reg_index == 0xA)
value = settings->reg_settings_6g[i].i2c_reg_val;
else {
i2c_success =
dal_ddc_service_query_ddc_data(
pipe_ctx->stream->link->ddc,
slave_address, &offset, 1, &value, 1);
if (!i2c_success)
goto i2c_write_fail;
}
buffer[0] = offset;
/* Set APPLY_RX_TX_CHANGE bit to 1 */
buffer[1] = value | apply_rx_tx_change;
i2c_success = i2c_write(pipe_ctx, slave_address,
buffer, sizeof(buffer));
RETIMER_REDRIVER_INFO("retimer write to slave_address = 0x%x,\
offset = 0x%x, reg_val = 0x%x, i2c_success = %d\n",
slave_address, buffer[0], buffer[1], i2c_success?1:0);
if (!i2c_success)
goto i2c_write_fail;
}
}
}
}
if (is_vga_mode) {
/* Program additional settings if using 640x480 resolution */
/* Write offset 0xFF to 0x01 */
buffer[0] = 0xff;
buffer[1] = 0x01;
i2c_success = i2c_write(pipe_ctx, slave_address,
buffer, sizeof(buffer));
RETIMER_REDRIVER_INFO("retimer write to slave_address = 0x%x,\
offset = 0x%x, reg_val = 0x%x, i2c_success = %d\n",
slave_address, buffer[0], buffer[1], i2c_success?1:0);
if (!i2c_success)
goto i2c_write_fail;
/* Write offset 0x00 to 0x23 */
buffer[0] = 0x00;
buffer[1] = 0x23;
i2c_success = i2c_write(pipe_ctx, slave_address,
buffer, sizeof(buffer));
RETIMER_REDRIVER_INFO("retimer write to slave_address = 0x%x,\
offset = 0x%x, reg_val = 0x%x, i2c_success = %d\n",
slave_address, buffer[0], buffer[1], i2c_success?1:0);
if (!i2c_success)
goto i2c_write_fail;
/* Write offset 0xff to 0x00 */
buffer[0] = 0xff;
buffer[1] = 0x00;
i2c_success = i2c_write(pipe_ctx, slave_address,
buffer, sizeof(buffer));
RETIMER_REDRIVER_INFO("retimer write to slave_address = 0x%x,\
offset = 0x%x, reg_val = 0x%x, i2c_success = %d\n",
slave_address, buffer[0], buffer[1], i2c_success?1:0);
if (!i2c_success)
goto i2c_write_fail;
}
return;
i2c_write_fail:
DC_LOG_DEBUG("Set retimer failed");
}
static void write_i2c_default_retimer_setting(
struct pipe_ctx *pipe_ctx,
bool is_vga_mode,
bool is_over_340mhz)
{
uint8_t slave_address = (0xBA >> 1);
uint8_t buffer[2];
bool i2c_success = false;
DC_LOGGER_INIT(pipe_ctx->stream->ctx->logger);
memset(&buffer, 0, sizeof(buffer));
/* Program Slave Address for tuning single integrity */
/* Write offset 0x0A to 0x13 */
buffer[0] = 0x0A;
buffer[1] = 0x13;
i2c_success = i2c_write(pipe_ctx, slave_address,
buffer, sizeof(buffer));
RETIMER_REDRIVER_INFO("retimer writes default setting to slave_address = 0x%x,\
offset = 0x%x, reg_val = 0x%x, i2c_success = %d\n",
slave_address, buffer[0], buffer[1], i2c_success?1:0);
if (!i2c_success)
goto i2c_write_fail;
/* Write offset 0x0A to 0x17 */
buffer[0] = 0x0A;
buffer[1] = 0x17;
i2c_success = i2c_write(pipe_ctx, slave_address,
buffer, sizeof(buffer));
RETIMER_REDRIVER_INFO("retimer write to slave_addr = 0x%x,\
offset = 0x%x, reg_val = 0x%x, i2c_success = %d\n",
slave_address, buffer[0], buffer[1], i2c_success?1:0);
if (!i2c_success)
goto i2c_write_fail;
/* Write offset 0x0B to 0xDA or 0xD8 */
buffer[0] = 0x0B;
buffer[1] = is_over_340mhz ? 0xDA : 0xD8;
i2c_success = i2c_write(pipe_ctx, slave_address,
buffer, sizeof(buffer));
RETIMER_REDRIVER_INFO("retimer write to slave_addr = 0x%x,\
offset = 0x%x, reg_val = 0x%x, i2c_success = %d\n",
slave_address, buffer[0], buffer[1], i2c_success?1:0);
if (!i2c_success)
goto i2c_write_fail;
/* Write offset 0x0A to 0x17 */
buffer[0] = 0x0A;
buffer[1] = 0x17;
i2c_success = i2c_write(pipe_ctx, slave_address,
buffer, sizeof(buffer));
RETIMER_REDRIVER_INFO("retimer write to slave_addr = 0x%x,\
offset = 0x%x, reg_val= 0x%x, i2c_success = %d\n",
slave_address, buffer[0], buffer[1], i2c_success?1:0);
if (!i2c_success)
goto i2c_write_fail;
/* Write offset 0x0C to 0x1D or 0x91 */
buffer[0] = 0x0C;
buffer[1] = is_over_340mhz ? 0x1D : 0x91;
i2c_success = i2c_write(pipe_ctx, slave_address,
buffer, sizeof(buffer));
RETIMER_REDRIVER_INFO("retimer write to slave_addr = 0x%x,\
offset = 0x%x, reg_val = 0x%x, i2c_success = %d\n",
slave_address, buffer[0], buffer[1], i2c_success?1:0);
if (!i2c_success)
goto i2c_write_fail;
/* Write offset 0x0A to 0x17 */
buffer[0] = 0x0A;
buffer[1] = 0x17;
i2c_success = i2c_write(pipe_ctx, slave_address,
buffer, sizeof(buffer));
RETIMER_REDRIVER_INFO("retimer write to slave_addr = 0x%x,\
offset = 0x%x, reg_val = 0x%x, i2c_success = %d\n",
slave_address, buffer[0], buffer[1], i2c_success?1:0);
if (!i2c_success)
goto i2c_write_fail;
if (is_vga_mode) {
/* Program additional settings if using 640x480 resolution */
/* Write offset 0xFF to 0x01 */
buffer[0] = 0xff;
buffer[1] = 0x01;
i2c_success = i2c_write(pipe_ctx, slave_address,
buffer, sizeof(buffer));
RETIMER_REDRIVER_INFO("retimer write to slave_addr = 0x%x,\
offset = 0x%x, reg_val = 0x%x, i2c_success = %d\n",
slave_address, buffer[0], buffer[1], i2c_success?1:0);
if (!i2c_success)
goto i2c_write_fail;
/* Write offset 0x00 to 0x23 */
buffer[0] = 0x00;
buffer[1] = 0x23;
i2c_success = i2c_write(pipe_ctx, slave_address,
buffer, sizeof(buffer));
RETIMER_REDRIVER_INFO("retimer write to slave_addr = 0x%x,\
offset = 0x%x, reg_val= 0x%x, i2c_success = %d\n",
slave_address, buffer[0], buffer[1], i2c_success?1:0);
if (!i2c_success)
goto i2c_write_fail;
/* Write offset 0xff to 0x00 */
buffer[0] = 0xff;
buffer[1] = 0x00;
i2c_success = i2c_write(pipe_ctx, slave_address,
buffer, sizeof(buffer));
RETIMER_REDRIVER_INFO("retimer write default setting to slave_addr = 0x%x,\
offset = 0x%x, reg_val= 0x%x, i2c_success = %d end here\n",
slave_address, buffer[0], buffer[1], i2c_success?1:0);
if (!i2c_success)
goto i2c_write_fail;
}
return;
i2c_write_fail:
DC_LOG_DEBUG("Set default retimer failed");
}
static void write_i2c_redriver_setting(
struct pipe_ctx *pipe_ctx,
bool is_over_340mhz)
{
uint8_t slave_address = (0xF0 >> 1);
uint8_t buffer[16];
bool i2c_success = false;
DC_LOGGER_INIT(pipe_ctx->stream->ctx->logger);
memset(&buffer, 0, sizeof(buffer));
// Program Slave Address for tuning single integrity
buffer[3] = 0x4E;
buffer[4] = 0x4E;
buffer[5] = 0x4E;
buffer[6] = is_over_340mhz ? 0x4E : 0x4A;
i2c_success = i2c_write(pipe_ctx, slave_address,
buffer, sizeof(buffer));
RETIMER_REDRIVER_INFO("redriver write 0 to all 16 reg offset expect following:\n\
\t slave_addr = 0x%x, offset[3] = 0x%x, offset[4] = 0x%x,\
offset[5] = 0x%x,offset[6] is_over_340mhz = 0x%x,\
i2c_success = %d\n",
slave_address, buffer[3], buffer[4], buffer[5], buffer[6], i2c_success?1:0);
if (!i2c_success)
DC_LOG_DEBUG("Set redriver failed");
}
static void disable_link(struct dc_link *link, enum signal_type signal)
{
/*
* TODO: implement call for dp_set_hw_test_pattern
* it is needed for compliance testing
*/
/* Here we need to specify that encoder output settings
* need to be calculated as for the set mode,
* it will lead to querying dynamic link capabilities
* which should be done before enable output
*/
if (dc_is_dp_signal(signal)) {
/* SST DP, eDP */
#if defined(CONFIG_DRM_AMD_DC_DCN)
struct dc_link_settings link_settings = link->cur_link_settings;
#endif
if (dc_is_dp_sst_signal(signal))
dp_disable_link_phy(link, signal);
else
dp_disable_link_phy_mst(link, signal);
if (dc_is_dp_sst_signal(signal) ||
link->mst_stream_alloc_table.stream_count == 0) {
#if defined(CONFIG_DRM_AMD_DC_DCN)
if (dp_get_link_encoding_format(&link_settings) == DP_8b_10b_ENCODING) {
dp_set_fec_enable(link, false);
dp_set_fec_ready(link, false);
}
#else
dp_set_fec_enable(link, false);
dp_set_fec_ready(link, false);
#endif
}
} else {
if (signal != SIGNAL_TYPE_VIRTUAL)
link->link_enc->funcs->disable_output(link->link_enc, signal);
}
if (signal == SIGNAL_TYPE_DISPLAY_PORT_MST) {
/* MST disable link only when no stream use the link */
if (link->mst_stream_alloc_table.stream_count <= 0)
link->link_status.link_active = false;
} else {
link->link_status.link_active = false;
}
}
static void enable_link_hdmi(struct pipe_ctx *pipe_ctx)
{
struct dc_stream_state *stream = pipe_ctx->stream;
struct dc_link *link = stream->link;
enum dc_color_depth display_color_depth;
enum engine_id eng_id;
struct ext_hdmi_settings settings = {0};
bool is_over_340mhz = false;
bool is_vga_mode = (stream->timing.h_addressable == 640)
&& (stream->timing.v_addressable == 480);
if (stream->phy_pix_clk == 0)
stream->phy_pix_clk = stream->timing.pix_clk_100hz / 10;
if (stream->phy_pix_clk > 340000)
is_over_340mhz = true;
if (dc_is_hdmi_signal(pipe_ctx->stream->signal)) {
unsigned short masked_chip_caps = pipe_ctx->stream->link->chip_caps &
EXT_DISPLAY_PATH_CAPS__EXT_CHIP_MASK;
if (masked_chip_caps == EXT_DISPLAY_PATH_CAPS__HDMI20_TISN65DP159RSBT) {
/* DP159, Retimer settings */
eng_id = pipe_ctx->stream_res.stream_enc->id;
if (get_ext_hdmi_settings(pipe_ctx, eng_id, &settings)) {
write_i2c_retimer_setting(pipe_ctx,
is_vga_mode, is_over_340mhz, &settings);
} else {
write_i2c_default_retimer_setting(pipe_ctx,
is_vga_mode, is_over_340mhz);
}
} else if (masked_chip_caps == EXT_DISPLAY_PATH_CAPS__HDMI20_PI3EQX1204) {
/* PI3EQX1204, Redriver settings */
write_i2c_redriver_setting(pipe_ctx, is_over_340mhz);
}
}
if (dc_is_hdmi_signal(pipe_ctx->stream->signal))
dal_ddc_service_write_scdc_data(
stream->link->ddc,
stream->phy_pix_clk,
stream->timing.flags.LTE_340MCSC_SCRAMBLE);
memset(&stream->link->cur_link_settings, 0,
sizeof(struct dc_link_settings));
display_color_depth = stream->timing.display_color_depth;
if (stream->timing.pixel_encoding == PIXEL_ENCODING_YCBCR422)
display_color_depth = COLOR_DEPTH_888;
link->link_enc->funcs->enable_tmds_output(
link->link_enc,
pipe_ctx->clock_source->id,
display_color_depth,
pipe_ctx->stream->signal,
stream->phy_pix_clk);
if (dc_is_hdmi_signal(pipe_ctx->stream->signal))
dal_ddc_service_read_scdc_data(link->ddc);
}
static void enable_link_lvds(struct pipe_ctx *pipe_ctx)
{
struct dc_stream_state *stream = pipe_ctx->stream;
struct dc_link *link = stream->link;
if (stream->phy_pix_clk == 0)
stream->phy_pix_clk = stream->timing.pix_clk_100hz / 10;
memset(&stream->link->cur_link_settings, 0,
sizeof(struct dc_link_settings));
link->link_enc->funcs->enable_lvds_output(
link->link_enc,
pipe_ctx->clock_source->id,
stream->phy_pix_clk);
}
/****************************enable_link***********************************/
static enum dc_status enable_link(
struct dc_state *state,
struct pipe_ctx *pipe_ctx)
{
enum dc_status status = DC_ERROR_UNEXPECTED;
struct dc_stream_state *stream = pipe_ctx->stream;
struct dc_link *link = stream->link;
/* There's some scenarios where driver is unloaded with display
* still enabled. When driver is reloaded, it may cause a display
* to not light up if there is a mismatch between old and new
* link settings. Need to call disable first before enabling at
* new link settings.
*/
if (link->link_status.link_active) {
disable_link(link, pipe_ctx->stream->signal);
}
switch (pipe_ctx->stream->signal) {
case SIGNAL_TYPE_DISPLAY_PORT:
status = enable_link_dp(state, pipe_ctx);
break;
case SIGNAL_TYPE_EDP:
status = enable_link_edp(state, pipe_ctx);
break;
case SIGNAL_TYPE_DISPLAY_PORT_MST:
status = enable_link_dp_mst(state, pipe_ctx);
msleep(200);
break;
case SIGNAL_TYPE_DVI_SINGLE_LINK:
case SIGNAL_TYPE_DVI_DUAL_LINK:
case SIGNAL_TYPE_HDMI_TYPE_A:
enable_link_hdmi(pipe_ctx);
status = DC_OK;
break;
case SIGNAL_TYPE_LVDS:
enable_link_lvds(pipe_ctx);
status = DC_OK;
break;
case SIGNAL_TYPE_VIRTUAL:
status = DC_OK;
break;
default:
break;
}
if (status == DC_OK)
pipe_ctx->stream->link->link_status.link_active = true;
return status;
}
static uint32_t get_timing_pixel_clock_100hz(const struct dc_crtc_timing *timing)
{
uint32_t pxl_clk = timing->pix_clk_100hz;
if (timing->pixel_encoding == PIXEL_ENCODING_YCBCR420)
pxl_clk /= 2;
else if (timing->pixel_encoding == PIXEL_ENCODING_YCBCR422)
pxl_clk = pxl_clk * 2 / 3;
if (timing->display_color_depth == COLOR_DEPTH_101010)
pxl_clk = pxl_clk * 10 / 8;
else if (timing->display_color_depth == COLOR_DEPTH_121212)
pxl_clk = pxl_clk * 12 / 8;
return pxl_clk;
}
static bool dp_active_dongle_validate_timing(
const struct dc_crtc_timing *timing,
const struct dpcd_caps *dpcd_caps)
{
const struct dc_dongle_caps *dongle_caps = &dpcd_caps->dongle_caps;
switch (dpcd_caps->dongle_type) {
case DISPLAY_DONGLE_DP_VGA_CONVERTER:
case DISPLAY_DONGLE_DP_DVI_CONVERTER:
case DISPLAY_DONGLE_DP_DVI_DONGLE:
if (timing->pixel_encoding == PIXEL_ENCODING_RGB)
return true;
else
return false;
default:
break;
}
#if defined(CONFIG_DRM_AMD_DC_DCN)
if (dpcd_caps->dongle_type == DISPLAY_DONGLE_DP_HDMI_CONVERTER &&
dongle_caps->extendedCapValid == true) {
#else
if (dpcd_caps->dongle_type != DISPLAY_DONGLE_DP_HDMI_CONVERTER ||
dongle_caps->extendedCapValid == false)
return true;
#endif
/* Check Pixel Encoding */
switch (timing->pixel_encoding) {
case PIXEL_ENCODING_RGB:
case PIXEL_ENCODING_YCBCR444:
break;
case PIXEL_ENCODING_YCBCR422:
if (!dongle_caps->is_dp_hdmi_ycbcr422_pass_through)
return false;
break;
case PIXEL_ENCODING_YCBCR420:
if (!dongle_caps->is_dp_hdmi_ycbcr420_pass_through)
return false;
break;
default:
/* Invalid Pixel Encoding*/
return false;
}
switch (timing->display_color_depth) {
case COLOR_DEPTH_666:
case COLOR_DEPTH_888:
/*888 and 666 should always be supported*/
break;
case COLOR_DEPTH_101010:
if (dongle_caps->dp_hdmi_max_bpc < 10)
return false;
break;
case COLOR_DEPTH_121212:
if (dongle_caps->dp_hdmi_max_bpc < 12)
return false;
break;
case COLOR_DEPTH_141414:
case COLOR_DEPTH_161616:
default:
/* These color depths are currently not supported */
return false;
}
if (get_timing_pixel_clock_100hz(timing) > (dongle_caps->dp_hdmi_max_pixel_clk_in_khz * 10))
return false;
#if defined(CONFIG_DRM_AMD_DC_DCN)
}
if (dpcd_caps->channel_coding_cap.bits.DP_128b_132b_SUPPORTED == 0 &&
dpcd_caps->dsc_caps.dsc_basic_caps.fields.dsc_support.DSC_PASSTHROUGH_SUPPORT == 0 &&
dongle_caps->dfp_cap_ext.supported) {
if (dongle_caps->dfp_cap_ext.max_pixel_rate_in_mps < (timing->pix_clk_100hz / 10000))
return false;
if (dongle_caps->dfp_cap_ext.max_video_h_active_width < timing->h_addressable)
return false;
if (dongle_caps->dfp_cap_ext.max_video_v_active_height < timing->v_addressable)
return false;
if (timing->pixel_encoding == PIXEL_ENCODING_RGB) {
if (!dongle_caps->dfp_cap_ext.encoding_format_caps.support_rgb)
return false;
if (timing->display_color_depth == COLOR_DEPTH_666 &&
!dongle_caps->dfp_cap_ext.rgb_color_depth_caps.support_6bpc)
return false;
else if (timing->display_color_depth == COLOR_DEPTH_888 &&
!dongle_caps->dfp_cap_ext.rgb_color_depth_caps.support_8bpc)
return false;
else if (timing->display_color_depth == COLOR_DEPTH_101010 &&
!dongle_caps->dfp_cap_ext.rgb_color_depth_caps.support_10bpc)
return false;
else if (timing->display_color_depth == COLOR_DEPTH_121212 &&
!dongle_caps->dfp_cap_ext.rgb_color_depth_caps.support_12bpc)
return false;
else if (timing->display_color_depth == COLOR_DEPTH_161616 &&
!dongle_caps->dfp_cap_ext.rgb_color_depth_caps.support_16bpc)
return false;
} else if (timing->pixel_encoding == PIXEL_ENCODING_YCBCR444) {
if (!dongle_caps->dfp_cap_ext.encoding_format_caps.support_rgb)
return false;
if (timing->display_color_depth == COLOR_DEPTH_888 &&
!dongle_caps->dfp_cap_ext.ycbcr444_color_depth_caps.support_8bpc)
return false;
else if (timing->display_color_depth == COLOR_DEPTH_101010 &&
!dongle_caps->dfp_cap_ext.ycbcr444_color_depth_caps.support_10bpc)
return false;
else if (timing->display_color_depth == COLOR_DEPTH_121212 &&
!dongle_caps->dfp_cap_ext.ycbcr444_color_depth_caps.support_12bpc)
return false;
else if (timing->display_color_depth == COLOR_DEPTH_161616 &&
!dongle_caps->dfp_cap_ext.ycbcr444_color_depth_caps.support_16bpc)
return false;
} else if (timing->pixel_encoding == PIXEL_ENCODING_YCBCR422)