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2024-01-04 1543e317f1da31b75942316931e8f491a8920811 
 kernel/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
....@@ -1,13 +1,9 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
12 /*
23  * Analogix DP (Display port) core register interface driver.
34  *
45  * Copyright (C) 2012 Samsung Electronics Co., Ltd.
56  * Author: Jingoo Han <jg1.han@samsung.com>
6
- *
7
- * This program is free software; you can redistribute it and/or modify it
8
- * under the terms of the GNU General Public License as published by the
9
- * Free Software Foundation; either version 2 of the License, or (at your
10
- * option) any later version.
117  */
128 
139 #include <linux/delay.h>
....@@ -18,14 +14,10 @@
1814 #include <linux/phy/phy.h>
1915 
2016 #include <drm/bridge/analogix_dp.h>
17
+#include <drm/drm_probe_helper.h>
2118 
2219 #include "analogix_dp_core.h"
2320 #include "analogix_dp_reg.h"
24
-
25
-#define COMMON_INT_MASK_1	0
26
-#define COMMON_INT_MASK_2	0
27
-#define COMMON_INT_MASK_3	0
28
-#define COMMON_INT_MASK_4	(HOTPLUG_CHG | HPD_LOST | PLUG)
2921 
3022 static void analogix_dp_write(struct analogix_dp_device *dp, u32 reg, u32 val)
3123 {
....@@ -69,16 +61,13 @@
6961 	analogix_dp_write(dp, ANALOGIX_DP_VIDEO_CTL_1, reg);
7062 }
7163 
72
-void analogix_dp_lane_swap(struct analogix_dp_device *dp, bool enable)
64
+static void analogix_dp_set_lane_map(struct analogix_dp_device *dp)
7365 {
74
-	u32 reg;
66
+	struct video_info *video_info = &dp->video_info;
67
+	u32 i, reg = 0;
7568 
76
-	if (enable)
77
-		reg = LANE3_MAP_LOGIC_LANE_0 | LANE2_MAP_LOGIC_LANE_1 |
78
-		      LANE1_MAP_LOGIC_LANE_2 | LANE0_MAP_LOGIC_LANE_3;
79
-	else
80
-		reg = LANE3_MAP_LOGIC_LANE_3 | LANE2_MAP_LOGIC_LANE_2 |
81
-		      LANE1_MAP_LOGIC_LANE_1 | LANE0_MAP_LOGIC_LANE_0;
69
+	for (i = 0; i < video_info->max_lane_count; i++)
70
+		reg |= video_info->lane_map[i] << (2 * i);
8271 
8372 	analogix_dp_write(dp, ANALOGIX_DP_LANE_MAP, reg);
8473 }
....@@ -95,8 +84,7 @@
9584 
9685 	if (dp->plat_data && is_rockchip(dp->plat_data->dev_type)) {
9786 		reg = REF_CLK_24M;
98
-		if (dp->plat_data->dev_type == RK3288_DP ||
99
-		    dp->plat_data->dev_type == RK3368_EDP)
87
+		if (dp->plat_data->dev_type == RK3288_DP)
10088 			reg ^= REF_CLK_MASK;
10189 
10290 		analogix_dp_write(dp, ANALOGIX_DP_PLL_REG_1, reg);
....@@ -163,7 +151,7 @@
163151 
164152 	usleep_range(20, 30);
165153 
166
-	analogix_dp_lane_swap(dp, 0);
154
+	analogix_dp_set_lane_map(dp);
167155 
168156 	analogix_dp_write(dp, ANALOGIX_DP_SYS_CTL_1, 0x0);
169157 	analogix_dp_write(dp, ANALOGIX_DP_SYS_CTL_2, 0x40);
....@@ -172,9 +160,6 @@
172160 
173161 	analogix_dp_write(dp, ANALOGIX_DP_PKT_SEND_CTL, 0x0);
174162 	analogix_dp_write(dp, ANALOGIX_DP_HDCP_CTL, 0x0);
175
-
176
-	analogix_dp_write(dp, ANALOGIX_DP_HPD_DEGLITCH_L, 0x5e);
177
-	analogix_dp_write(dp, ANALOGIX_DP_HPD_DEGLITCH_H, 0x1a);
178163 
179164 	analogix_dp_write(dp, ANALOGIX_DP_LINK_DEBUG_CTL, 0x10);
180165 
....@@ -196,17 +181,10 @@
196181 
197182 void analogix_dp_config_interrupt(struct analogix_dp_device *dp)
198183 {
199
-	u32 reg;
200
-
201184 	/* 0: mask, 1: unmask */
202
-	reg = COMMON_INT_MASK_1;
203
-	analogix_dp_write(dp, ANALOGIX_DP_COMMON_INT_MASK_1, reg);
204
-
205
-	reg = COMMON_INT_MASK_2;
206
-	analogix_dp_write(dp, ANALOGIX_DP_COMMON_INT_MASK_2, reg);
207
-
208
-	reg = COMMON_INT_MASK_3;
209
-	analogix_dp_write(dp, ANALOGIX_DP_COMMON_INT_MASK_3, reg);
185
+	analogix_dp_write(dp, ANALOGIX_DP_COMMON_INT_MASK_1, 0);
186
+	analogix_dp_write(dp, ANALOGIX_DP_COMMON_INT_MASK_2, 0);
187
+	analogix_dp_write(dp, ANALOGIX_DP_COMMON_INT_MASK_3, 0);
210188 
211189 	if (dp->force_hpd || dp->hpd_gpiod)
212190 		analogix_dp_mute_hpd_interrupt(dp);
....@@ -220,7 +198,7 @@
220198 
221199 	/* 0: mask, 1: unmask */
222200 	reg = analogix_dp_read(dp, ANALOGIX_DP_COMMON_INT_MASK_4);
223
-	reg &= ~COMMON_INT_MASK_4;
201
+	reg &= ~HOTPLUG_CHG;
224202 	analogix_dp_write(dp, ANALOGIX_DP_COMMON_INT_MASK_4, reg);
225203 
226204 	reg = analogix_dp_read(dp, ANALOGIX_DP_INT_STA_MASK);
....@@ -233,7 +211,8 @@
233211 	u32 reg;
234212 
235213 	/* 0: mask, 1: unmask */
236
-	reg = COMMON_INT_MASK_4;
214
+	reg = analogix_dp_read(dp, ANALOGIX_DP_COMMON_INT_MASK_4);
215
+	reg |= HOTPLUG_CHG;
237216 	analogix_dp_write(dp, ANALOGIX_DP_COMMON_INT_MASK_4, reg);
238217 
239218 	reg = analogix_dp_read(dp, ANALOGIX_DP_INT_STA_MASK);
....@@ -424,7 +403,8 @@
424403 	if (dp->hpd_gpiod)
425404 		return;
426405 
427
-	analogix_dp_clear_hotplug_interrupts(dp);
406
+	analogix_dp_write(dp, ANALOGIX_DP_HPD_DEGLITCH_H, 0xbb);
407
+	analogix_dp_write(dp, ANALOGIX_DP_HPD_DEGLITCH_L, 0x80);
428408 
429409 	reg = analogix_dp_read(dp, ANALOGIX_DP_SYS_CTL_3);
430410 	reg &= ~(F_HPD | HPD_CTRL);
....@@ -440,23 +420,39 @@
440420 	analogix_dp_write(dp, ANALOGIX_DP_SYS_CTL_3, reg);
441421 }
442422 
443
-enum dp_irq_type analogix_dp_get_irq_type(struct analogix_dp_device *dp)
423
+static void analogix_dp_handle_hpd_event(struct analogix_dp_device *dp)
444424 {
425
+	bool changed = false;
445426 	u32 reg;
446427 
447
-	/* Parse hotplug interrupt status register */
428
+	reg = analogix_dp_read(dp, ANALOGIX_DP_INT_STA);
429
+	if (reg & INT_HPD) {
430
+		analogix_dp_write(dp, ANALOGIX_DP_INT_STA, INT_HPD);
431
+
432
+		memset(&dp->compliance, 0, sizeof(dp->compliance));
433
+
434
+		analogix_dp_check_device_service_irq(dp);
435
+
436
+		if (dp->compliance.test_active &&
437
+		    dp->compliance.test_type == DP_TEST_LINK_PHY_TEST_PATTERN) {
438
+			analogix_dp_phy_test(dp);
439
+			return;
440
+		}
441
+	}
442
+
448443 	reg = analogix_dp_read(dp, ANALOGIX_DP_COMMON_INT_STA_4);
444
+	if (reg & HOTPLUG_CHG) {
445
+		analogix_dp_write(dp, ANALOGIX_DP_COMMON_INT_STA_4, HOTPLUG_CHG);
446
+		changed = true;
447
+	}
449448 
450
-	if (reg & PLUG)
451
-		return DP_IRQ_TYPE_HP_CABLE_IN;
449
+	if (changed)
450
+		drm_helper_hpd_irq_event(dp->drm_dev);
451
+}
452452 
453
-	if (reg & HPD_LOST)
454
-		return DP_IRQ_TYPE_HP_CABLE_OUT;
455
-
456
-	if (reg & HOTPLUG_CHG)
457
-		return DP_IRQ_TYPE_HP_CHANGE;
458
-
459
-	return DP_IRQ_TYPE_UNKNOWN;
453
+void analogix_dp_irq_handler(struct analogix_dp_device *dp)
454
+{
455
+	analogix_dp_handle_hpd_event(dp);
460456 }
461457 
462458 void analogix_dp_reset_aux(struct analogix_dp_device *dp)
....@@ -531,99 +527,12 @@
531527 	analogix_dp_write(dp, ANALOGIX_DP_FUNC_EN_1, reg);
532528 }
533529 
534
-int analogix_dp_start_aux_transaction(struct analogix_dp_device *dp)
535
-{
536
-	int reg;
537
-	int retval = 0;
538
-	int timeout_loop = 0;
539
-
540
-	/* Enable AUX CH operation */
541
-	reg = analogix_dp_read(dp, ANALOGIX_DP_AUX_CH_CTL_2);
542
-	reg |= AUX_EN;
543
-	analogix_dp_write(dp, ANALOGIX_DP_AUX_CH_CTL_2, reg);
544
-
545
-	/* Is AUX CH command reply received? */
546
-	reg = analogix_dp_read(dp, ANALOGIX_DP_INT_STA);
547
-	while (!(reg & RPLY_RECEIV)) {
548
-		timeout_loop++;
549
-		if (DP_TIMEOUT_LOOP_COUNT < timeout_loop) {
550
-			dev_err(dp->dev, "AUX CH command reply failed!\n");
551
-			return -ETIMEDOUT;
552
-		}
553
-		reg = analogix_dp_read(dp, ANALOGIX_DP_INT_STA);
554
-		usleep_range(10, 11);
555
-	}
556
-
557
-	/* Clear interrupt source for AUX CH command reply */
558
-	analogix_dp_write(dp, ANALOGIX_DP_INT_STA, RPLY_RECEIV);
559
-
560
-	/* Clear interrupt source for AUX CH access error */
561
-	reg = analogix_dp_read(dp, ANALOGIX_DP_INT_STA);
562
-	if (reg & AUX_ERR) {
563
-		analogix_dp_write(dp, ANALOGIX_DP_INT_STA, AUX_ERR);
564
-		return -EREMOTEIO;
565
-	}
566
-
567
-	/* Check AUX CH error access status */
568
-	reg = analogix_dp_read(dp, ANALOGIX_DP_AUX_CH_STA);
569
-	if ((reg & AUX_STATUS_MASK) != 0) {
570
-		dev_err(dp->dev, "AUX CH error happens: %d\n\n",
571
-			reg & AUX_STATUS_MASK);
572
-		return -EREMOTEIO;
573
-	}
574
-
575
-	return retval;
576
-}
577
-
578
-int analogix_dp_write_byte_to_dpcd(struct analogix_dp_device *dp,
579
-				   unsigned int reg_addr,
580
-				   unsigned char data)
581
-{
582
-	u32 reg;
583
-	int i;
584
-	int retval;
585
-
586
-	for (i = 0; i < 3; i++) {
587
-		/* Clear AUX CH data buffer */
588
-		reg = BUF_CLR;
589
-		analogix_dp_write(dp, ANALOGIX_DP_BUFFER_DATA_CTL, reg);
590
-
591
-		/* Select DPCD device address */
592
-		reg = AUX_ADDR_7_0(reg_addr);
593
-		analogix_dp_write(dp, ANALOGIX_DP_AUX_ADDR_7_0, reg);
594
-		reg = AUX_ADDR_15_8(reg_addr);
595
-		analogix_dp_write(dp, ANALOGIX_DP_AUX_ADDR_15_8, reg);
596
-		reg = AUX_ADDR_19_16(reg_addr);
597
-		analogix_dp_write(dp, ANALOGIX_DP_AUX_ADDR_19_16, reg);
598
-
599
-		/* Write data buffer */
600
-		reg = (unsigned int)data;
601
-		analogix_dp_write(dp, ANALOGIX_DP_BUF_DATA_0, reg);
602
-
603
-		/*
604
-		 * Set DisplayPort transaction and write 1 byte
605
-		 * If bit 3 is 1, DisplayPort transaction.
606
-		 * If Bit 3 is 0, I2C transaction.
607
-		 */
608
-		reg = AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_WRITE;
609
-		analogix_dp_write(dp, ANALOGIX_DP_AUX_CH_CTL_1, reg);
610
-
611
-		/* Start AUX transaction */
612
-		retval = analogix_dp_start_aux_transaction(dp);
613
-		if (retval == 0)
614
-			break;
615
-
616
-		dev_dbg(dp->dev, "%s: Aux Transaction fail!\n", __func__);
617
-	}
618
-
619
-	return retval;
620
-}
621
-
622530 static void analogix_dp_ssc_enable(struct analogix_dp_device *dp)
623531 {
624532 	u32 reg;
625533 
626
-	writel(0x17, dp->reg_base + ANALOGIX_DP_SSC_REG);
534
+	/* 4500ppm */
535
+	writel(0x19, dp->reg_base + ANALOIGX_DP_SSC_REG);
627536 	/*
628537 	 * To apply updated SSC parameters into SSC operation,
629538 	 * firmware must disable and enable this bit.
....@@ -658,17 +567,18 @@
658567 	analogix_dp_write(dp, ANALOGIX_DP_LINK_BW_SET, bwtype);
659568 
660569 	if (dp->phy) {
661
-		union phy_configure_opts phy_cfg;
570
+		union phy_configure_opts phy_cfg = {0};
662571 
663572 		phy_cfg.dp.lanes = dp->link_train.lane_count;
664
-		phy_cfg.dp.link_rate = drm_dp_bw_code_to_link_rate(dp->link_train.link_rate) / 100;
573
+		phy_cfg.dp.link_rate =
574
+			drm_dp_bw_code_to_link_rate(dp->link_train.link_rate) / 100;
665575 		phy_cfg.dp.ssc = analogix_dp_ssc_supported(dp);
666576 		phy_cfg.dp.set_lanes = false;
667577 		phy_cfg.dp.set_rate = true;
668578 		phy_cfg.dp.set_voltages = false;
669579 		ret = phy_configure(dp->phy, &phy_cfg);
670580 		if (ret && ret != -EOPNOTSUPP) {
671
-			dev_err(dp->dev, "%s: phy_configure() failed: %d\n",
581
+			dev_err(dp->dev, "%s: phy_configure failed: %d\n",
672582 				__func__, ret);
673583 			return;
674584 		}
....@@ -705,7 +615,7 @@
705615 	analogix_dp_write(dp, ANALOGIX_DP_LANE_COUNT_SET, reg);
706616 
707617 	if (dp->phy) {
708
-		union phy_configure_opts phy_cfg;
618
+		union phy_configure_opts phy_cfg = {0};
709619 
710620 		phy_cfg.dp.lanes = dp->link_train.lane_count;
711621 		phy_cfg.dp.set_lanes = true;
....@@ -728,86 +638,6 @@
728638 	*count = reg;
729639 }
730640 
731
-struct swing_pre_emp_ctrl {
732
-	u8 amp;
733
-	u8 emp;
734
-};
735
-
736
-static const struct swing_pre_emp_ctrl swing_pre_emp_ctrl_rbr[4][4] = {
737
-	/* voltage swing 0, pre-emphasis 0->3 */
738
-	{
739
-		{ .amp = 0x50, .emp = 0x00 },
740
-		{ .amp = 0x6c, .emp = 0x28 },
741
-		{ .amp = 0x80, .emp = 0x60 },
742
-		{ .amp = 0xb0, .emp = 0xc4 },
743
-	},
744
-	/* voltage swing 1, pre-emphasis 0->3 */
745
-	{
746
-		{ .amp = 0x78, .emp = 0x00 },
747
-		{ .amp = 0xa4, .emp = 0x50 },
748
-		{ .amp = 0xcc, .emp = 0xa6 },
749
-	},
750
-	/* voltage swing 2, pre-emphasis 0->3 */
751
-	{
752
-		{ .amp = 0xa0, .emp = 0x00 },
753
-		{ .amp = 0xe4, .emp = 0x72 },
754
-	},
755
-	/* voltage swing 3, pre-emphasis 0->3 */
756
-	{
757
-		{ .amp = 0xf0, .emp = 0x00 },
758
-	},
759
-};
760
-
761
-static const struct swing_pre_emp_ctrl swing_pre_emp_ctrl_hbr[4][4] = {
762
-	/* voltage swing 0, pre-emphasis 0->3 */
763
-	{
764
-		{ .amp = 0x50, .emp = 0x00 },
765
-		{ .amp = 0x6c, .emp = 0x34 },
766
-		{ .amp = 0x80, .emp = 0x64 },
767
-		{ .amp = 0xb8, .emp = 0xdc },
768
-	},
769
-	/* voltage swing 1, pre-emphasis 0->3 */
770
-	{
771
-		{ .amp = 0x78, .emp = 0x00 },
772
-		{ .amp = 0xa8, .emp = 0x58 },
773
-		{ .amp = 0xcc, .emp = 0xa8 },
774
-	},
775
-	/* voltage swing 2, pre-emphasis 0->3 */
776
-	{
777
-		{ .amp = 0xa0, .emp = 0x00 },
778
-		{ .amp = 0xdd, .emp = 0x74 },
779
-	},
780
-	/* voltage swing 3, pre-emphasis 0->3 */
781
-	{
782
-		{ .amp = 0xf0, .emp = 0x00 },
783
-	},
784
-};
785
-
786
-static const struct swing_pre_emp_ctrl swing_pre_emp_ctrl_hbr2[4][4] = {
787
-	/* voltage swing 0, pre-emphasis 0->3 */
788
-	{
789
-		{ .amp = 0x64, .emp = 0x1c },
790
-		{ .amp = 0x90, .emp = 0x78 },
791
-		{ .amp = 0xc4, .emp = 0xe0 },
792
-		{ .amp = 0xa0, .emp = 0xa0 },
793
-	},
794
-	/* voltage swing 1, pre-emphasis 0->3 */
795
-	{
796
-		{ .amp = 0x9c, .emp = 0x3c },
797
-		{ .amp = 0xe8, .emp = 0xd0 },
798
-		{ .amp = 0xb4, .emp = 0x78 },
799
-	},
800
-	/* voltage swing 2, pre-emphasis 0->3 */
801
-	{
802
-		{ .amp = 0xe0, .emp = 0x68 },
803
-		{ .amp = 0xe8, .emp = 0xd0 },
804
-	},
805
-	/* voltage swing 3, pre-emphasis 0->3 */
806
-	{
807
-		{ .amp = 0xf0, .emp = 0x00 },
808
-	},
809
-};
810
-
811641 void analogix_dp_set_lane_link_training(struct analogix_dp_device *dp)
812642 {
813643 	u8 lane;
....@@ -819,7 +649,7 @@
819649 				  dp->link_train.training_lane[lane]);
820650 
821651 	if (dp->phy) {
822
-		union phy_configure_opts phy_cfg;
652
+		union phy_configure_opts phy_cfg = {0};
823653 
824654 		for (lane = 0; lane < dp->link_train.lane_count; lane++) {
825655 			u8 training_lane = dp->link_train.training_lane[lane];
....@@ -834,6 +664,8 @@
834664 		}
835665 
836666 		phy_cfg.dp.lanes = dp->link_train.lane_count;
667
+		phy_cfg.dp.link_rate =
668
+			drm_dp_bw_code_to_link_rate(dp->link_train.link_rate) / 100;
837669 		phy_cfg.dp.set_lanes = false;
838670 		phy_cfg.dp.set_rate = false;
839671 		phy_cfg.dp.set_voltages = true;
....@@ -842,63 +674,6 @@
842674 			dev_err(dp->dev, "%s: phy_configure() failed: %d\n",
843675 				__func__, ret);
844676 			return;
845
-		}
846
-	} else {
847
-		const struct swing_pre_emp_ctrl *ctrl;
848
-
849
-		for (lane = 0; lane < dp->link_train.lane_count; lane++) {
850
-			u8 training_lane = dp->link_train.training_lane[lane];
851
-			u8 vs, pe;
852
-			u32 reg;
853
-
854
-			vs = (training_lane & DP_TRAIN_VOLTAGE_SWING_MASK) >>
855
-			     DP_TRAIN_VOLTAGE_SWING_SHIFT;
856
-			pe = (training_lane & DP_TRAIN_PRE_EMPHASIS_MASK) >>
857
-			     DP_TRAIN_PRE_EMPHASIS_SHIFT;
858
-
859
-			switch (dp->link_train.link_rate) {
860
-			case DP_LINK_BW_1_62:
861
-				ctrl = &swing_pre_emp_ctrl_rbr[vs][pe];
862
-				break;
863
-			case DP_LINK_BW_2_7:
864
-				ctrl = &swing_pre_emp_ctrl_hbr[vs][pe];
865
-				break;
866
-			case DP_LINK_BW_5_4:
867
-			default:
868
-				ctrl = &swing_pre_emp_ctrl_hbr2[vs][pe];
869
-				break;
870
-			}
871
-
872
-			switch (lane) {
873
-			case 0:
874
-				reg = analogix_dp_read(dp, ANALOGIX_DP_ANALOG_CTL_42);
875
-				reg |= R_FORCE_CH0_AMP | R_FORCE_CH0_EMP;
876
-				analogix_dp_write(dp, ANALOGIX_DP_ANALOG_CTL_42, reg);
877
-				analogix_dp_write(dp, ANALOGIX_DP_ANALOG_CTL_36, ctrl->amp);
878
-				analogix_dp_write(dp, ANALOGIX_DP_ANALOG_CTL_37, ctrl->emp);
879
-				break;
880
-			case 1:
881
-				reg = analogix_dp_read(dp, ANALOGIX_DP_ANALOG_CTL_42);
882
-				reg |= R_FORCE_CH1_AMP | R_FORCE_CH1_EMP;
883
-				analogix_dp_write(dp, ANALOGIX_DP_ANALOG_CTL_42, reg);
884
-				analogix_dp_write(dp, ANALOGIX_DP_ANALOG_CTL_39, ctrl->amp);
885
-				analogix_dp_write(dp, ANALOGIX_DP_ANALOG_CTL_40, ctrl->emp);
886
-				break;
887
-			case 2:
888
-				reg = analogix_dp_read(dp, ANALOGIX_DP_ANALOG_CTL_49);
889
-				reg |= R_FORCE_CH2_AMP | R_FORCE_CH2_EMP;
890
-				analogix_dp_write(dp, ANALOGIX_DP_ANALOG_CTL_49, reg);
891
-				analogix_dp_write(dp, ANALOGIX_DP_ANALOG_CTL_43, ctrl->amp);
892
-				analogix_dp_write(dp, ANALOGIX_DP_ANALOG_CTL_44, ctrl->emp);
893
-				break;
894
-			case 3:
895
-				reg = analogix_dp_read(dp, ANALOGIX_DP_ANALOG_CTL_49);
896
-				reg |= R_FORCE_CH3_AMP | R_FORCE_CH3_EMP;
897
-				analogix_dp_write(dp, ANALOGIX_DP_ANALOG_CTL_49, reg);
898
-				analogix_dp_write(dp, ANALOGIX_DP_ANALOG_CTL_46, ctrl->amp);
899
-				analogix_dp_write(dp, ANALOGIX_DP_ANALOG_CTL_47, ctrl->emp);
900
-				break;
901
-			}
902677 		}
903678 	}
904679 }
....@@ -925,6 +700,15 @@
925700 	}
926701 }
927702 
703
+bool analogix_dp_get_enhanced_mode(struct analogix_dp_device *dp)
704
+{
705
+	u32 reg;
706
+
707
+	reg = analogix_dp_read(dp, ANALOGIX_DP_SYS_CTL_4);
708
+
709
+	return !!(reg & ENHANCED);
710
+}
711
+
928712 void analogix_dp_set_training_pattern(struct analogix_dp_device *dp,
929713 				      enum pattern_set pattern)
930714 {
....@@ -949,6 +733,22 @@
949733 		break;
950734 	case TRAINING_PTN3:
951735 		reg = SCRAMBLING_DISABLE | SW_TRAINING_PATTERN_SET_PTN3;
736
+		analogix_dp_write(dp, ANALOGIX_DP_TRAINING_PTN_SET, reg);
737
+		break;
738
+	case TEST_PATTERN_80BIT:
739
+		reg = 0x3e0f83e0;
740
+		analogix_dp_write(dp, ANALOGIX_DP_TEST_80B_PATTERN0, reg);
741
+		reg = 0x0f83e0f8;
742
+		analogix_dp_write(dp, ANALOGIX_DP_TEST_80B_PATTERN1, reg);
743
+		reg = 0x0000f83e;
744
+		analogix_dp_write(dp, ANALOGIX_DP_TEST_80B_PATTERN2, reg);
745
+		reg = SCRAMBLING_ENABLE | LINK_QUAL_PATTERN_SET_80BIT;
746
+		analogix_dp_write(dp, ANALOGIX_DP_TRAINING_PTN_SET, reg);
747
+		break;
748
+	case TEST_PATTERN_HBR2:
749
+		reg = 0xfb;
750
+		analogix_dp_write(dp, ANALOGIX_DP_TEST_HBR2_PATTERN, reg);
751
+		reg = SCRAMBLING_ENABLE | LINK_QUAL_PATTERN_SET_HBR2;
952752 		analogix_dp_write(dp, ANALOGIX_DP_TRAINING_PTN_SET, reg);
953753 		break;
954754 	case DP_NONE:
....@@ -990,8 +790,11 @@
990790 	reg = CHA_CRI(4) | CHA_CTRL;
991791 	analogix_dp_write(dp, ANALOGIX_DP_SYS_CTL_2, reg);
992792 
993
-	reg = 0x0;
994
-	analogix_dp_write(dp, ANALOGIX_DP_SYS_CTL_3, reg);
793
+	if (dp->video_info.force_stream_valid) {
794
+		reg = analogix_dp_read(dp, ANALOGIX_DP_SYS_CTL_3);
795
+		reg |= VALID_CTRL | F_VALID;
796
+		analogix_dp_write(dp, ANALOGIX_DP_SYS_CTL_3, reg);
797
+	}
995798 
996799 	reg = VID_HRES_TH(2) | VID_VRES_TH(0);
997800 	analogix_dp_write(dp, ANALOGIX_DP_VIDEO_CTL_8, reg);
....@@ -1204,8 +1007,26 @@
12041007 	return status;
12051008 }
12061009 
1010
+static void analogix_dp_reuse_spd(struct analogix_dp_device *dp)
1011
+{
1012
+	u32 reg, val;
1013
+
1014
+	switch (dp->plat_data->dev_type) {
1015
+	case RK3588_EDP:
1016
+		reg = ANALOGIX_DP_SPDIF_AUDIO_CTL_0;
1017
+		break;
1018
+	default:
1019
+		reg = ANALOGIX_DP_VIDEO_CTL_3;
1020
+		break;
1021
+	}
1022
+
1023
+	val = analogix_dp_read(dp, reg);
1024
+	val |= REUSE_SPD_EN;
1025
+	analogix_dp_write(dp, reg, val);
1026
+}
1027
+
12071028 int analogix_dp_send_psr_spd(struct analogix_dp_device *dp,
1208
-			     struct edp_vsc_psr *vsc, bool blocking)
1029
+			     struct dp_sdp *vsc, bool blocking)
12091030 {
12101031 	unsigned int val;
12111032 	int ret;
....@@ -1233,13 +1054,16 @@
12331054 	analogix_dp_write(dp, ANALOGIX_DP_SPD_PB3, 0x5D);
12341055 
12351056 	/* configure DB0 / DB1 values */
1236
-	analogix_dp_write(dp, ANALOGIX_DP_VSC_SHADOW_DB0, vsc->DB0);
1237
-	analogix_dp_write(dp, ANALOGIX_DP_VSC_SHADOW_DB1, vsc->DB1);
1057
+	analogix_dp_write(dp, ANALOGIX_DP_VSC_SHADOW_DB0, vsc->db[0]);
1058
+	analogix_dp_write(dp, ANALOGIX_DP_VSC_SHADOW_DB1, vsc->db[1]);
1059
+
1060
+	/* configure PB0 / PB1 values */
1061
+	analogix_dp_write(dp, ANALOGIX_DP_VSC_SHADOW_PB0,
1062
+			  vsc->db[1] ? 0x8d : 0x00);
1063
+	analogix_dp_write(dp, ANALOGIX_DP_VSC_SHADOW_PB1, 0x00);
12381064 
12391065 	/* set reuse spd inforframe */
1240
-	val = analogix_dp_read(dp, ANALOGIX_DP_VIDEO_CTL_3);
1241
-	val |= REUSE_SPD_EN;
1242
-	analogix_dp_write(dp, ANALOGIX_DP_VIDEO_CTL_3, val);
1066
+	analogix_dp_reuse_spd(dp);
12431067 
12441068 	/* mark info frame update */
12451069 	val = analogix_dp_read(dp, ANALOGIX_DP_PKT_SEND_CTL);
....@@ -1254,11 +1078,21 @@
12541078 	if (!blocking)
12551079 		return 0;
12561080 
1081
+	/*
1082
+	 * db[1]!=0: entering PSR, wait for fully active remote frame buffer.
1083
+	 * db[1]==0: exiting PSR, wait for either
1084
+	 *  (a) ACTIVE_RESYNC - the sink "must display the
1085
+	 *      incoming active frames from the Source device with no visible
1086
+	 *      glitches and/or artifacts", even though timings may still be
1087
+	 *      re-synchronizing; or
1088
+	 *  (b) INACTIVE - the transition is fully complete.
1089
+	 */
12571090 	ret = readx_poll_timeout(analogix_dp_get_psr_status, dp, psr_status,
12581091 		psr_status >= 0 &&
1259
-		((vsc->DB1 && psr_status == DP_PSR_SINK_ACTIVE_RFB) ||
1260
-		(!vsc->DB1 && psr_status == DP_PSR_SINK_INACTIVE)), 1500,
1261
-		DP_TIMEOUT_PSR_LOOP_MS * 1000);
1092
+		((vsc->db[1] && psr_status == DP_PSR_SINK_ACTIVE_RFB) ||
1093
+		(!vsc->db[1] && (psr_status == DP_PSR_SINK_ACTIVE_RESYNC ||
1094
+				 psr_status == DP_PSR_SINK_INACTIVE))),
1095
+		1500, DP_TIMEOUT_PSR_LOOP_MS * 1000);
12621096 	if (ret) {
12631097 		dev_warn(dp->dev, "Failed to apply PSR %d\n", ret);
12641098 		return ret;
....@@ -1266,31 +1100,46 @@
12661100 	return 0;
12671101 }
12681102 
1269
-void analogix_dp_phy_power_on(struct analogix_dp_device *dp)
1103
+int analogix_dp_phy_power_on(struct analogix_dp_device *dp)
12701104 {
1271
-	if (dp->phy_enabled)
1272
-		return;
1105
+	int ret;
12731106 
1274
-	phy_power_on(dp->phy);
1107
+	ret = phy_set_mode(dp->phy, PHY_MODE_DP);
1108
+	if (ret) {
1109
+		dev_err(dp->dev, "phy_set_mode failed: %d\n", ret);
1110
+		return ret;
1111
+	}
12751112 
1276
-	dp->phy_enabled = true;
1113
+	ret = phy_power_on(dp->phy);
1114
+	if (ret) {
1115
+		dev_err(dp->dev, "phy_power_on failed: %d\n", ret);
1116
+		return ret;
1117
+	}
1118
+
1119
+	return ret;
12771120 }
12781121 
12791122 void analogix_dp_phy_power_off(struct analogix_dp_device *dp)
12801123 {
1281
-	if (!dp->phy_enabled)
1282
-		return;
1283
-
12841124 	phy_power_off(dp->phy);
1285
-
1286
-	dp->phy_enabled = false;
12871125 }
1126
+
1127
+enum {
1128
+	AUX_STATUS_OK,
1129
+	AUX_STATUS_NACK_ERROR,
1130
+	AUX_STATUS_TIMEOUT_ERROR,
1131
+	AUX_STATUS_UNKNOWN_ERROR,
1132
+	AUX_STATUS_MUCH_DEFER_ERROR,
1133
+	AUX_STATUS_TX_SHORT_ERROR,
1134
+	AUX_STATUS_RX_SHORT_ERROR,
1135
+	AUX_STATUS_NACK_WITHOUT_M_ERROR,
1136
+	AUX_STATUS_I2C_NACK_ERROR
1137
+};
12881138 
12891139 ssize_t analogix_dp_transfer(struct analogix_dp_device *dp,
12901140 			     struct drm_dp_aux_msg *msg)
12911141 {
12921142 	u32 reg;
1293
-	u32 status_reg;
12941143 	u8 *buffer = msg->buffer;
12951144 	unsigned int i;
12961145 	int num_transferred = 0;
....@@ -1299,12 +1148,6 @@
12991148 	/* Buffer size of AUX CH is 16 bytes */
13001149 	if (WARN_ON(msg->size > 16))
13011150 		return -E2BIG;
1302
-
1303
-	reg = analogix_dp_read(dp, ANALOGIX_DP_FUNC_EN_2);
1304
-	if (reg & AUX_FUNC_EN_N) {
1305
-		analogix_dp_phy_power_on(dp);
1306
-		analogix_dp_init_aux(dp);
1307
-	}
13081151 
13091152 	/* Clear AUX CH data buffer */
13101153 	reg = BUF_CLR;
....@@ -1383,18 +1226,19 @@
13831226 	/* Clear interrupt source for AUX CH command reply */
13841227 	analogix_dp_write(dp, ANALOGIX_DP_INT_STA, RPLY_RECEIV);
13851228 
1386
-	/* Clear interrupt source for AUX CH access error */
1387
-	reg = analogix_dp_read(dp, ANALOGIX_DP_INT_STA);
1388
-	status_reg = analogix_dp_read(dp, ANALOGIX_DP_AUX_CH_STA);
1389
-	if ((reg & AUX_ERR) || (status_reg & AUX_STATUS_MASK)) {
1390
-		analogix_dp_write(dp, ANALOGIX_DP_INT_STA, AUX_ERR);
1391
-
1392
-		dev_warn(dp->dev, "AUX CH error happened: %#x (%d)\n",
1393
-			 status_reg & AUX_STATUS_MASK, !!(reg & AUX_ERR));
1394
-		goto aux_error;
1395
-	}
1229
+	reg = analogix_dp_read(dp, ANALOGIX_DP_AUX_CH_STA);
1230
+	if ((reg & AUX_STATUS_MASK) == AUX_STATUS_TIMEOUT_ERROR)
1231
+		return -ETIMEDOUT;
13961232 
13971233 	if (msg->request & DP_AUX_I2C_READ) {
1234
+		size_t buf_data_count;
1235
+
1236
+		reg = analogix_dp_read(dp, ANALOGIX_DP_BUFFER_DATA_CTL);
1237
+		buf_data_count = BUF_DATA_COUNT(reg);
1238
+
1239
+		if (buf_data_count != msg->size)
1240
+			return -EBUSY;
1241
+
13981242 		for (i = 0; i < msg->size; i++) {
13991243 			reg = analogix_dp_read(dp, ANALOGIX_DP_BUF_DATA_0 +
14001244 					       4 * i);
....@@ -1540,3 +1384,11 @@
15401384 	reg |= AUD_FIFO_FUNC_EN_N | AUD_FUNC_EN_N;
15411385 	analogix_dp_write(dp, ANALOGIX_DP_FUNC_EN_1, reg);
15421386 }
1387
+
1388
+void analogix_dp_init(struct analogix_dp_device *dp)
1389
+{
1390
+	analogix_dp_init_interrupt(dp);
1391
+	analogix_dp_config_interrupt(dp);
1392
+	analogix_dp_init_hpd(dp);
1393
+	analogix_dp_init_aux(dp);
1394
+}