link/protocols/link_dp_training.c

305 	uint32_t lane;
313 	for (lane = 1; lane < lt_settings->link_settings.lane_count; lane++) {
314 		if (lane_settings[lane].VOLTAGE_SWING > max_requested.VOLTAGE_SWING)
315 			max_requested.VOLTAGE_SWING = lane_settings[lane].VOLTAGE_SWING;
317 		if (lane_settings[lane].PRE_EMPHASIS > max_requested.PRE_EMPHASIS)
318 			max_requested.PRE_EMPHASIS = lane_settings[lane].PRE_EMPHASIS;
319 		if (lane_settings[lane].FFE_PRESET.settings.level >
322 					lane_settings[lane].FFE_PRESET.settings.level;
343 	for (lane = 0; lane < LANE_COUNT_DP_MAX; lane++) {
344 		lane_settings[lane].VOLTAGE_SWING = max_requested.VOLTAGE_SWING;
345 		lane_settings[lane].PRE_EMPHASIS = max_requested.PRE_EMPHASIS;
346 		lane_settings[lane].FFE_PRESET = max_requested.FFE_PRESET;
355 	uint8_t lane = 0;
357 	for (lane = 0; lane < LANE_COUNT_DP_MAX; lane++) {
360 			dpcd_lane_settings[lane].bits.VOLTAGE_SWING_SET =
361 					(uint8_t)(hw_lane_settings[lane].VOLTAGE_SWING);
362 			dpcd_lane_settings[lane].bits.PRE_EMPHASIS_SET =
363 					(uint8_t)(hw_lane_settings[lane].PRE_EMPHASIS);
364 			dpcd_lane_settings[lane].bits.MAX_SWING_REACHED =
365 					(hw_lane_settings[lane].VOLTAGE_SWING ==
367 			dpcd_lane_settings[lane].bits.MAX_PRE_EMPHASIS_REACHED =
368 					(hw_lane_settings[lane].PRE_EMPHASIS ==
372 			dpcd_lane_settings[lane].tx_ffe.PRESET_VALUE =
373 					hw_lane_settings[lane].FFE_PRESET.settings.level;
461 	uint32_t lane;
462 	for (lane = 0; lane <
464 		lane++) {
465 		if (lt_settings->dpcd_lane_settings[lane].bits.VOLTAGE_SWING_SET
477 	uint32_t lane;
479 	for (lane = 0; lane < (uint32_t)(ln_count); lane++) {
480 		if (!dpcd_lane_status[lane].bits.CR_DONE_0)
491 	uint32_t lane;
492 	for (lane = 0; lane < (uint32_t)(ln_count); lane++)
493 		if (!dpcd_lane_status[lane].bits.CHANNEL_EQ_DONE_0)
502 	uint32_t lane;
503 	for (lane = 0; lane < (uint32_t)(ln_count); lane++)
504 		if (!dpcd_lane_status[lane].bits.SYMBOL_LOCKED_0)
522 	uint32_t lane;
530 	/*parse lane status*/
531 	for (lane = 0; lane < link->cur_link_settings.lane_count; lane++) {
535 		lane_status.raw = dp_get_nibble_at_index(&dpcd_buf[2], lane);
567 	uint32_t lane;
585 			" keep current lane status and lane adjust unchanged",
591 	for (lane = 0; lane <
593 		lane++) {
595 		ln_status[lane].raw =
596 			dp_get_nibble_at_index(&dpcd_buf[0], lane);
597 		ln_adjust[lane].raw =
598 			dp_get_nibble_at_index(&dpcd_buf[lane_adjust_offset], lane);
644 	uint32_t lane;
653 	for (lane = 0; lane < LANE_COUNT_DP_MAX; lane++) {
655 			lane_settings[lane].VOLTAGE_SWING = *lt_settings->voltage_swing;
657 			lane_settings[lane].PRE_EMPHASIS = *lt_settings->pre_emphasis;
659 			lane_settings[lane].POST_CURSOR2 = *lt_settings->post_cursor2;
661 			lane_settings[lane].FFE_PRESET = *lt_settings->ffe_preset;
685 	uint32_t lane;
693 	/* Override lane settings */
702 	/* Override HW lane settings with BIOS forced values if present */
709 	for (lane = 0; lane < LANE_COUNT_DP_MAX; lane++) {
710 		lt_settings->hw_lane_settings[lane].VOLTAGE_SWING =
714 		lt_settings->hw_lane_settings[lane].PRE_EMPHASIS =
718 		lt_settings->hw_lane_settings[lane].POST_CURSOR2 =
815 	uint32_t lane;
817 	for (lane = 0; lane < LANE_COUNT_DP_MAX; lane++) {
820 			hw_lane_settings[lane].VOLTAGE_SWING =
821 					(enum dc_voltage_swing)(ln_adjust[lane].bits.
823 			hw_lane_settings[lane].PRE_EMPHASIS =
824 					(enum dc_pre_emphasis)(ln_adjust[lane].bits.
828 			hw_lane_settings[lane].FFE_PRESET.raw =
829 					ln_adjust[lane].tx_ffe.PRESET_VALUE;
1089 		DC_LOG_HW_LINK_TRAINING("%s\n %x rate = %x\n %x lane = %x framing = %x\n %x spread = %x\n",
1099 		DC_LOG_HW_LINK_TRAINING("%s\n %x rate set = %x\n %x lane = %x framing = %x\n %x spread = %x\n",
1354 	uint32_t lane;
1389 			for (lane = 0; lane < (uint32_t)(lane_count); lane++) {
1392 				dpcd_lane_settings[lane].bits.VOLTAGE_SWING_SET !=
1393 				dpcd_lane_adjust[lane].bits.VOLTAGE_SWING_LANE ||
1394 				lt_settings->dpcd_lane_settings[lane].bits.PRE_EMPHASIS_SET !=
1395 				dpcd_lane_adjust[lane].bits.PRE_EMPHASIS_LANE) {
1572 		DC_LOG_HW_LINK_TRAINING("%s: Beginning link(%d) training attempt %u of %d @ rate(%d) x lane(%d) @ spread = %x\n",
1658 				"%s: Link(%d) training attempt %u of %d failed @ rate(%d) x lane(%d) @ spread = %x : fail reason:(%d)\n",
1664 				"%s: Link(%d) training attempt %u of %d failed @ rate(%d) x lane(%d) @ spread = %x : fail reason:(%d)\n",