#include "dpcd_defs.h"
#include "dc_dmub_srv.h"
#include "dce/dmub_hw_lock_mgr.h"
+#include "inc/link_enc_cfg.h"
/*Travis*/
static const uint8_t DP_VGA_LVDS_CONVERTER_ID_2[] = "sivarT";
wait_in_micro_secs);
}
+static enum dpcd_training_patterns
+ dc_dp_training_pattern_to_dpcd_training_pattern(
+ struct dc_link *link,
+ enum dc_dp_training_pattern pattern)
+{
+ enum dpcd_training_patterns dpcd_tr_pattern =
+ DPCD_TRAINING_PATTERN_VIDEOIDLE;
+
+ switch (pattern) {
+ case DP_TRAINING_PATTERN_SEQUENCE_1:
+ dpcd_tr_pattern = DPCD_TRAINING_PATTERN_1;
+ break;
+ case DP_TRAINING_PATTERN_SEQUENCE_2:
+ dpcd_tr_pattern = DPCD_TRAINING_PATTERN_2;
+ break;
+ case DP_TRAINING_PATTERN_SEQUENCE_3:
+ dpcd_tr_pattern = DPCD_TRAINING_PATTERN_3;
+ break;
+ case DP_TRAINING_PATTERN_SEQUENCE_4:
+ dpcd_tr_pattern = DPCD_TRAINING_PATTERN_4;
+ break;
+ case DP_TRAINING_PATTERN_VIDEOIDLE:
+ dpcd_tr_pattern = DPCD_TRAINING_PATTERN_VIDEOIDLE;
+ break;
+ default:
+ ASSERT(0);
+ DC_LOG_HW_LINK_TRAINING("%s: Invalid HW Training pattern: %d\n",
+ __func__, pattern);
+ break;
+ }
+
+ return dpcd_tr_pattern;
+}
+
static void dpcd_set_training_pattern(
struct dc_link *link,
- union dpcd_training_pattern dpcd_pattern)
+ enum dc_dp_training_pattern training_pattern)
{
+ union dpcd_training_pattern dpcd_pattern = { {0} };
+
+ dpcd_pattern.v1_4.TRAINING_PATTERN_SET =
+ dc_dp_training_pattern_to_dpcd_training_pattern(
+ link, training_pattern);
+
core_link_write_dpcd(
link,
DP_TRAINING_PATTERN_SET,
static enum dc_dp_training_pattern decide_eq_training_pattern(struct dc_link *link,
const struct dc_link_settings *link_settings)
{
+ struct link_encoder *link_enc;
enum dc_dp_training_pattern highest_tp = DP_TRAINING_PATTERN_SEQUENCE_2;
- struct encoder_feature_support *features = &link->link_enc->features;
+ struct encoder_feature_support *features;
struct dpcd_caps *dpcd_caps = &link->dpcd_caps;
+ /* Access link encoder capability based on whether it is statically
+ * or dynamically assigned to a link.
+ */
+ if (link->is_dig_mapping_flexible &&
+ link->dc->res_pool->funcs->link_encs_assign)
+ link_enc = link_enc_cfg_get_link_enc_used_by_link(link->dc->current_state, link);
+ else
+ link_enc = link->link_enc;
+ ASSERT(link_enc);
+ features = &link_enc->features;
+
if (features->flags.bits.IS_TPS3_CAPABLE)
highest_tp = DP_TRAINING_PATTERN_SEQUENCE_3;
}
}
-static enum dpcd_training_patterns
- dc_dp_training_pattern_to_dpcd_training_pattern(
- struct dc_link *link,
- enum dc_dp_training_pattern pattern)
-{
- enum dpcd_training_patterns dpcd_tr_pattern =
- DPCD_TRAINING_PATTERN_VIDEOIDLE;
-
- switch (pattern) {
- case DP_TRAINING_PATTERN_SEQUENCE_1:
- dpcd_tr_pattern = DPCD_TRAINING_PATTERN_1;
- break;
- case DP_TRAINING_PATTERN_SEQUENCE_2:
- dpcd_tr_pattern = DPCD_TRAINING_PATTERN_2;
- break;
- case DP_TRAINING_PATTERN_SEQUENCE_3:
- dpcd_tr_pattern = DPCD_TRAINING_PATTERN_3;
- break;
- case DP_TRAINING_PATTERN_SEQUENCE_4:
- dpcd_tr_pattern = DPCD_TRAINING_PATTERN_4;
- break;
- default:
- ASSERT(0);
- DC_LOG_HW_LINK_TRAINING("%s: Invalid HW Training pattern: %d\n",
- __func__, pattern);
- break;
- }
-
- return dpcd_tr_pattern;
-}
-
static uint8_t dc_dp_initialize_scrambling_data_symbols(
struct dc_link *link,
enum dc_dp_training_pattern pattern)
}
static bool is_ch_eq_done(enum dc_lane_count ln_count,
- union lane_status *dpcd_lane_status,
- union lane_align_status_updated *lane_status_updated)
+ union lane_status *dpcd_lane_status)
{
+ bool done = true;
uint32_t lane;
- if (!lane_status_updated->bits.INTERLANE_ALIGN_DONE)
- return false;
- else {
- for (lane = 0; lane < (uint32_t)(ln_count); lane++) {
- if (!dpcd_lane_status[lane].bits.SYMBOL_LOCKED_0 ||
- !dpcd_lane_status[lane].bits.CHANNEL_EQ_DONE_0)
- return false;
- }
- }
- return true;
+ for (lane = 0; lane < (uint32_t)(ln_count); lane++)
+ if (!dpcd_lane_status[lane].bits.CHANNEL_EQ_DONE_0)
+ done = false;
+ return done;
+}
+
+static bool is_symbol_locked(enum dc_lane_count ln_count,
+ union lane_status *dpcd_lane_status)
+{
+ bool locked = true;
+ uint32_t lane;
+ for (lane = 0; lane < (uint32_t)(ln_count); lane++)
+ if (!dpcd_lane_status[lane].bits.SYMBOL_LOCKED_0)
+ locked = false;
+ return locked;
+}
+
+static inline bool is_interlane_aligned(union lane_align_status_updated align_status)
+{
+ return align_status.bits.INTERLANE_ALIGN_DONE == 1;
}
static void update_drive_settings(
if (!is_cr_done(lane_count, dpcd_lane_status))
return false;
- if (!is_ch_eq_done(
- lane_count,
- dpcd_lane_status,
- &dpcd_lane_status_updated))
+ if (!is_ch_eq_done(lane_count, dpcd_lane_status) ||
+ !is_symbol_locked(lane_count, dpcd_lane_status) ||
+ !is_interlane_aligned(dpcd_lane_status_updated))
return false;
for (lane = 0; lane < (uint32_t)(lane_count); lane++) {
return LINK_TRAINING_EQ_FAIL_CR;
/* 6. check CHEQ done*/
- if (is_ch_eq_done(lane_count,
- dpcd_lane_status,
- &dpcd_lane_status_updated))
+ if (is_ch_eq_done(lane_count, dpcd_lane_status) &&
+ is_symbol_locked(lane_count, dpcd_lane_status) &&
+ is_interlane_aligned(dpcd_lane_status_updated))
return LINK_TRAINING_SUCCESS;
/* 7. update VS/PE/PC2 in lt_settings*/
return get_cr_failure(lane_count, dpcd_lane_status);
}
-static inline enum link_training_result perform_link_training_int(
+static inline enum link_training_result dp_transition_to_video_idle(
struct dc_link *link,
struct link_training_settings *lt_settings,
enum link_training_result status)
return status;
}
-static enum link_training_result check_link_loss_status(
+enum link_training_result dp_check_link_loss_status(
struct dc_link *link,
const struct link_training_settings *link_training_setting)
{
return status;
}
-static void initialize_training_settings(
+static inline void decide_8b_10b_training_settings(
struct dc_link *link,
const struct dc_link_settings *link_setting,
const struct dc_link_training_overrides *overrides,
else
lt_settings->link_settings.link_spread = LINK_SPREAD_05_DOWNSPREAD_30KHZ;
+ lt_settings->lttpr_mode = link->lttpr_mode;
+
/* Initialize lane settings overrides */
if (overrides->voltage_swing != NULL)
lt_settings->voltage_swing = overrides->voltage_swing;
lt_settings->enhanced_framing = 1;
}
-static uint8_t convert_to_count(uint8_t lttpr_repeater_count)
+static void decide_training_settings(
+ struct dc_link *link,
+ const struct dc_link_settings *link_settings,
+ const struct dc_link_training_overrides *overrides,
+ struct link_training_settings *lt_settings)
+{
+ if (dp_get_link_encoding_format(link_settings) == DP_8b_10b_ENCODING)
+ decide_8b_10b_training_settings(link, link_settings, overrides, lt_settings);
+}
+
+
+uint8_t dp_convert_to_count(uint8_t lttpr_repeater_count)
{
switch (lttpr_repeater_count) {
case 0x80: // 1 lttpr repeater
{
uint8_t repeater_mode = DP_PHY_REPEATER_MODE_TRANSPARENT;
+ DC_LOG_HW_LINK_TRAINING("%s\n Set LTTPR to Transparent Mode\n", __func__);
core_link_write_dpcd(link,
DP_PHY_REPEATER_MODE,
(uint8_t *)&repeater_mode,
sizeof(repeater_mode));
}
-static void configure_lttpr_mode_non_transparent(struct dc_link *link)
+static void configure_lttpr_mode_non_transparent(
+ struct dc_link *link,
+ const struct link_training_settings *lt_settings)
{
/* aux timeout is already set to extended */
/* RESET/SET lttpr mode to enable non transparent mode */
enum dc_status result = DC_ERROR_UNEXPECTED;
uint8_t repeater_mode = DP_PHY_REPEATER_MODE_TRANSPARENT;
- DC_LOG_HW_LINK_TRAINING("%s\n Set LTTPR to Transparent Mode\n", __func__);
- result = core_link_write_dpcd(link,
- DP_PHY_REPEATER_MODE,
- (uint8_t *)&repeater_mode,
- sizeof(repeater_mode));
+ enum dp_link_encoding encoding = dp_get_link_encoding_format(<_settings->link_settings);
+
+ if (encoding == DP_8b_10b_ENCODING) {
+ DC_LOG_HW_LINK_TRAINING("%s\n Set LTTPR to Transparent Mode\n", __func__);
+ result = core_link_write_dpcd(link,
+ DP_PHY_REPEATER_MODE,
+ (uint8_t *)&repeater_mode,
+ sizeof(repeater_mode));
+
+ }
if (result == DC_OK) {
link->dpcd_caps.lttpr_caps.mode = repeater_mode;
link->dpcd_caps.lttpr_caps.mode = repeater_mode;
}
- repeater_cnt = convert_to_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
- for (repeater_id = repeater_cnt; repeater_id > 0; repeater_id--) {
- aux_interval_address = DP_TRAINING_AUX_RD_INTERVAL_PHY_REPEATER1 +
- ((DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE) * (repeater_id - 1));
- core_link_read_dpcd(
- link,
- aux_interval_address,
- (uint8_t *)&link->dpcd_caps.lttpr_caps.aux_rd_interval[repeater_id - 1],
- sizeof(link->dpcd_caps.lttpr_caps.aux_rd_interval[repeater_id - 1]));
- link->dpcd_caps.lttpr_caps.aux_rd_interval[repeater_id - 1] &= 0x7F;
+ if (encoding == DP_8b_10b_ENCODING) {
+ repeater_cnt = dp_convert_to_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
+ for (repeater_id = repeater_cnt; repeater_id > 0; repeater_id--) {
+ aux_interval_address = DP_TRAINING_AUX_RD_INTERVAL_PHY_REPEATER1 +
+ ((DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE) * (repeater_id - 1));
+ core_link_read_dpcd(
+ link,
+ aux_interval_address,
+ (uint8_t *)&link->dpcd_caps.lttpr_caps.aux_rd_interval[repeater_id - 1],
+ sizeof(link->dpcd_caps.lttpr_caps.aux_rd_interval[repeater_id - 1]));
+ link->dpcd_caps.lttpr_caps.aux_rd_interval[repeater_id - 1] &= 0x7F;
+ }
}
}
}
{
struct link_training_settings lt_settings;
- initialize_training_settings(
+ decide_training_settings(
link,
link_setting,
&link->preferred_training_settings,
{
enum link_training_result status = LINK_TRAINING_SUCCESS;
struct link_training_settings lt_settings;
- union dpcd_training_pattern dpcd_pattern = { { 0 } };
bool fec_enable;
uint8_t repeater_cnt;
uint8_t repeater_id;
- initialize_training_settings(
+ decide_training_settings(
link,
link_setting,
&link->preferred_training_settings,
/* Configure lttpr mode */
if (link->lttpr_mode == LTTPR_MODE_NON_TRANSPARENT)
- configure_lttpr_mode_non_transparent(link);
+ configure_lttpr_mode_non_transparent(link, <_settings);
else if (link->lttpr_mode == LTTPR_MODE_TRANSPARENT)
configure_lttpr_mode_transparent(link);
/* 2. perform link training (set link training done
* to false is done as well)
*/
- repeater_cnt = convert_to_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
+ repeater_cnt = dp_convert_to_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
for (repeater_id = repeater_cnt; (repeater_id > 0 && status == LINK_TRAINING_SUCCESS);
repeater_id--) {
}
/* 3. set training not in progress*/
- dpcd_pattern.v1_4.TRAINING_PATTERN_SET = DPCD_TRAINING_PATTERN_VIDEOIDLE;
- dpcd_set_training_pattern(link, dpcd_pattern);
+ dpcd_set_training_pattern(link, DP_TRAINING_PATTERN_VIDEOIDLE);
if ((status == LINK_TRAINING_SUCCESS) || !skip_video_pattern) {
- status = perform_link_training_int(link,
+ status = dp_transition_to_video_idle(link,
<_settings,
status);
}
*/
if (link->connector_signal != SIGNAL_TYPE_EDP && status == LINK_TRAINING_SUCCESS) {
msleep(5);
- status = check_link_loss_status(link, <_settings);
+ status = dp_check_link_loss_status(link, <_settings);
}
/* 6. print status message*/
bool skip_video_pattern,
int attempts,
struct pipe_ctx *pipe_ctx,
- enum signal_type signal)
+ enum signal_type signal,
+ bool do_fallback)
{
uint8_t j;
uint8_t delay_between_attempts = LINK_TRAINING_RETRY_DELAY;
struct dc_stream_state *stream = pipe_ctx->stream;
struct dc_link *link = stream->link;
enum dp_panel_mode panel_mode;
+ struct link_encoder *link_enc;
+ enum link_training_result status = LINK_TRAINING_CR_FAIL_LANE0;
+ struct dc_link_settings currnet_setting = *link_setting;
+
+ /* Dynamically assigned link encoders associated with stream rather than
+ * link.
+ */
+ if (link->dc->res_pool->funcs->link_encs_assign)
+ link_enc = stream->link_enc;
+ else
+ link_enc = link->link_enc;
+ ASSERT(link_enc);
/* We need to do this before the link training to ensure the idle pattern in SST
* mode will be sent right after the link training
*/
- link->link_enc->funcs->connect_dig_be_to_fe(link->link_enc,
+ link_enc->funcs->connect_dig_be_to_fe(link_enc,
pipe_ctx->stream_res.stream_enc->id, true);
for (j = 0; j < attempts; ++j) {
link,
signal,
pipe_ctx->clock_source->id,
- link_setting);
+ &currnet_setting);
if (stream->sink_patches.dppowerup_delay > 0) {
int delay_dp_power_up_in_ms = stream->sink_patches.dppowerup_delay;
panel_mode != DP_PANEL_MODE_DEFAULT);
if (link->aux_access_disabled) {
- dc_link_dp_perform_link_training_skip_aux(link, link_setting);
+ dc_link_dp_perform_link_training_skip_aux(link, &currnet_setting);
return true;
} else {
- enum link_training_result status = LINK_TRAINING_CR_FAIL_LANE0;
-
status = dc_link_dp_perform_link_training(
link,
- link_setting,
+ &currnet_setting,
skip_video_pattern);
if (status == LINK_TRAINING_SUCCESS)
return true;
/* latest link training still fail, skip delay and keep PHY on
*/
- if (j == (attempts - 1))
+ if (j == (attempts - 1) && link->ep_type == DISPLAY_ENDPOINT_PHY)
break;
DC_LOG_WARNING("%s: Link training attempt %u of %d failed\n",
dp_disable_link_phy(link, signal);
+ /* Abort link training if failure due to sink being unplugged. */
+ if (status == LINK_TRAINING_ABORT)
+ break;
+ else if (do_fallback) {
+ decide_fallback_link_setting(*link_setting, &currnet_setting, status);
+ /* Fail link training if reduced link bandwidth no longer meets
+ * stream requirements.
+ */
+ if (dc_bandwidth_in_kbps_from_timing(&stream->timing) <
+ dc_link_bandwidth_kbps(link, &currnet_setting))
+ break;
+ }
+
msleep(delay_between_attempts);
delay_between_attempts += LINK_TRAINING_RETRY_DELAY;
enum clock_source_id dp_cs_id = CLOCK_SOURCE_ID_EXTERNAL;
bool fec_enable = false;
- initialize_training_settings(
+ decide_training_settings(
link,
link_settings,
lt_overrides,
return true;
}
+bool dc_link_dp_get_max_link_enc_cap(const struct dc_link *link, struct dc_link_settings *max_link_enc_cap)
+{
+ if (!max_link_enc_cap) {
+ DC_LOG_ERROR("%s: Could not return max link encoder caps", __func__);
+ return false;
+ }
+
+ if (link->link_enc->funcs->get_max_link_cap) {
+ link->link_enc->funcs->get_max_link_cap(link->link_enc, max_link_enc_cap);
+ return true;
+ }
+
+ DC_LOG_ERROR("%s: Max link encoder caps unknown", __func__);
+ max_link_enc_cap->lane_count = 1;
+ max_link_enc_cap->link_rate = 6;
+ return false;
+}
+
static struct dc_link_settings get_max_link_cap(struct dc_link *link)
{
struct dc_link_settings max_link_cap = {0};
const struct dc_link_settings *link_setting;
+ /* According to spec, VSC SDP should be used if pixel format is YCbCr420 */
+ if (timing->pixel_encoding == PIXEL_ENCODING_YCBCR420 &&
+ !link->dpcd_caps.dprx_feature.bits.VSC_SDP_COLORIMETRY_SUPPORTED &&
+ dal_graphics_object_id_get_connector_id(link->link_id) != CONNECTOR_ID_VIRTUAL)
+ return false;
+
/*always DP fail safe mode*/
if ((timing->pix_clk_100hz / 10) == (uint32_t) 25175 &&
timing->h_addressable == (uint32_t) 640 &&
struct dc_link_settings current_link_setting;
uint32_t link_bw;
- if (link->dpcd_caps.dpcd_rev.raw < DPCD_REV_14 ||
+ /*
+ * edp_supported_link_rates_count is only valid for eDP v1.4 or higher.
+ * Per VESA eDP spec, "The DPCD revision for eDP v1.4 is 13h"
+ */
+ if (link->dpcd_caps.dpcd_rev.raw < DPCD_REV_13 ||
link->dpcd_caps.edp_supported_link_rates_count == 0) {
*link_setting = link->verified_link_cap;
return true;
/*
* Don't handle RX IRQ unless one of following is met:
* 1) The link is established (cur_link_settings != unknown)
- * 2) We kicked off MST detection
- * 3) We know we're dealing with an active dongle
+ * 2) We know we're dealing with a branch device, SST or MST
*/
if ((link->cur_link_settings.lane_count != LANE_COUNT_UNKNOWN) ||
- (link->type == dc_connection_mst_branch) ||
- is_dp_active_dongle(link))
+ is_dp_branch_device(link))
return true;
return false;
union phy_test_pattern dpcd_test_pattern;
union lane_adjust dpcd_lane_adjustment[2];
unsigned char dpcd_post_cursor_2_adjustment = 0;
- unsigned char test_80_bit_pattern[
+ unsigned char test_pattern_buffer[
(DP_TEST_80BIT_CUSTOM_PATTERN_79_72 -
DP_TEST_80BIT_CUSTOM_PATTERN_7_0)+1] = {0};
+ unsigned int test_pattern_size = 0;
enum dp_test_pattern test_pattern;
struct dc_link_training_settings link_settings;
union lane_adjust dpcd_lane_adjust;
break;
}
- if (test_pattern == DP_TEST_PATTERN_80BIT_CUSTOM)
+ if (test_pattern == DP_TEST_PATTERN_80BIT_CUSTOM) {
+ test_pattern_size = (DP_TEST_80BIT_CUSTOM_PATTERN_79_72 -
+ DP_TEST_80BIT_CUSTOM_PATTERN_7_0) + 1;
core_link_read_dpcd(
link,
DP_TEST_80BIT_CUSTOM_PATTERN_7_0,
- test_80_bit_pattern,
- sizeof(test_80_bit_pattern));
+ test_pattern_buffer,
+ test_pattern_size);
+ }
/* prepare link training settings */
link_settings.link = link->cur_link_settings;
test_pattern,
DP_TEST_PATTERN_COLOR_SPACE_UNDEFINED,
&link_training_settings,
- test_80_bit_pattern,
- (DP_TEST_80BIT_CUSTOM_PATTERN_79_72 -
- DP_TEST_80BIT_CUSTOM_PATTERN_7_0)+1);
+ test_pattern_buffer,
+ test_pattern_size);
}
static void dp_test_send_link_test_pattern(struct dc_link *link)
break;
}
+ switch (dpcd_test_params.bits.CLR_FORMAT) {
+ case 0:
+ pipe_ctx->stream->timing.pixel_encoding = PIXEL_ENCODING_RGB;
+ break;
+ case 1:
+ pipe_ctx->stream->timing.pixel_encoding = PIXEL_ENCODING_YCBCR422;
+ break;
+ case 2:
+ pipe_ctx->stream->timing.pixel_encoding = PIXEL_ENCODING_YCBCR444;
+ break;
+ default:
+ pipe_ctx->stream->timing.pixel_encoding = PIXEL_ENCODING_RGB;
+ break;
+ }
+
+
if (requestColorDepth != COLOR_DEPTH_UNDEFINED
&& pipe_ctx->stream->timing.display_color_depth != requestColorDepth) {
DC_LOG_DEBUG("%s: original bpc %d, changing to %d\n",
pipe_ctx->stream->timing.display_color_depth,
requestColorDepth);
pipe_ctx->stream->timing.display_color_depth = requestColorDepth;
- dp_update_dsc_config(pipe_ctx);
}
+ dp_update_dsc_config(pipe_ctx);
+
dc_link_dp_set_test_pattern(
link,
test_pattern,
*out_link_loss = true;
}
- if (link->type == dc_connection_active_dongle &&
+ if (link->type == dc_connection_sst_branch &&
hpd_irq_dpcd_data.bytes.sink_cnt.bits.SINK_COUNT
!= link->dpcd_sink_count)
status = true;
bool is_dp_active_dongle(const struct dc_link *link)
{
+ return (link->dpcd_caps.dongle_type >= DISPLAY_DONGLE_DP_VGA_CONVERTER) &&
+ (link->dpcd_caps.dongle_type <= DISPLAY_DONGLE_DP_HDMI_CONVERTER);
+}
+
+bool is_dp_branch_device(const struct dc_link *link)
+{
return link->dpcd_caps.is_branch_dev;
}
lttpr_dpcd_data[DP_PHY_REPEATER_EXTENDED_WAIT_TIMEOUT -
DP_LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV];
+ /* Attempt to train in LTTPR transparent mode if repeater count exceeds 8. */
is_lttpr_present = (link->dpcd_caps.lttpr_caps.phy_repeater_cnt > 0 &&
+ link->dpcd_caps.lttpr_caps.phy_repeater_cnt < 0xff &&
link->dpcd_caps.lttpr_caps.max_lane_count > 0 &&
link->dpcd_caps.lttpr_caps.max_lane_count <= 4 &&
link->dpcd_caps.lttpr_caps.revision.raw >= 0x14);
link->dpcd_caps.edp_supported_link_rates_count = 0;
memset(supported_link_rates, 0, sizeof(supported_link_rates));
- if (link->dpcd_caps.dpcd_rev.raw >= DPCD_REV_14 &&
+ /*
+ * edp_supported_link_rates_count is only valid for eDP v1.4 or higher.
+ * Per VESA eDP spec, "The DPCD revision for eDP v1.4 is 13h"
+ */
+ if (link->dpcd_caps.dpcd_rev.raw >= DPCD_REV_13 &&
(link->dc->debug.optimize_edp_link_rate ||
link->reported_link_cap.link_rate == LINK_RATE_UNKNOWN)) {
// Read DPCD 00010h - 0001Fh 16 bytes at one shot
return false;
}
+enum dp_link_encoding dp_get_link_encoding_format(const struct dc_link_settings *link_settings)
+{
+ if ((link_settings->link_rate >= LINK_RATE_LOW) &&
+ (link_settings->link_rate <= LINK_RATE_HIGH3))
+ return DP_8b_10b_ENCODING;
+ return DP_UNKNOWN_ENCODING;
+}
projects / platform / kernel / linux-starfive.git / blobdiff