1 // SPDX-License-Identifier: GPL-2.0
3  * Copyright (c) 2016-2022, NVIDIA CORPORATION.  All rights reserved.
21 #define HS_CURR_LEVEL_PADX_SHIFT(x)	((x) ? (11 + (x - 1) * 6) : 0)
280 	writel(value, priv->ao_regs + offset);  in ao_writel()
285 	return readl(priv->ao_regs + offset);  in ao_readl()
304 		return ERR_PTR(-ENOMEM);  in tegra186_usb2_lane_probe()
306 	INIT_LIST_HEAD(&usb2->base.list);  in tegra186_usb2_lane_probe()
307 	usb2->base.soc = &pad->soc->lanes[index];  in tegra186_usb2_lane_probe()
308 	usb2->base.index = index;  in tegra186_usb2_lane_probe()
309 	usb2->base.pad = pad;  in tegra186_usb2_lane_probe()
310 	usb2->base.np = np;  in tegra186_usb2_lane_probe()
312 	err = tegra_xusb_lane_parse_dt(&usb2->base, np);  in tegra186_usb2_lane_probe()
318 	return &usb2->base;  in tegra186_usb2_lane_probe()
331 	struct tegra_xusb_padctl *padctl = lane->pad->padctl;  in tegra186_utmi_enable_phy_sleepwalk()
333 	unsigned int index = lane->index;  in tegra186_utmi_enable_phy_sleepwalk()
336 	mutex_lock(&padctl->lock);  in tegra186_utmi_enable_phy_sleepwalk()
371 	/* power down the line state detectors of the pad */  in tegra186_utmi_enable_phy_sleepwalk()
376 	/* save state per speed */  in tegra186_utmi_enable_phy_sleepwalk()
413 	/* setup the pull-ups and pull-downs of the signals during the four  in tegra186_utmi_enable_phy_sleepwalk()
424 		/* J state: D+/D- = high/low, K state: D+/D- = low/high */  in tegra186_utmi_enable_phy_sleepwalk()
428 		if (padctl->soc->supports_lp_cfg_en)  in tegra186_utmi_enable_phy_sleepwalk()
433 		/* J state: D+/D- = low/high, K state: D+/D- = high/low */  in tegra186_utmi_enable_phy_sleepwalk()
437 		if (padctl->soc->supports_lp_cfg_en)  in tegra186_utmi_enable_phy_sleepwalk()
448 	/* power up the line state detectors of the pad */  in tegra186_utmi_enable_phy_sleepwalk()
472 	mutex_unlock(&padctl->lock);  in tegra186_utmi_enable_phy_sleepwalk()
479 	struct tegra_xusb_padctl *padctl = lane->pad->padctl;  in tegra186_utmi_disable_phy_sleepwalk()
481 	unsigned int index = lane->index;  in tegra186_utmi_disable_phy_sleepwalk()
484 	mutex_lock(&padctl->lock);  in tegra186_utmi_disable_phy_sleepwalk()
503 	if (padctl->soc->supports_lp_cfg_en) {  in tegra186_utmi_disable_phy_sleepwalk()
510 	/* power down the line state detectors of the port */  in tegra186_utmi_disable_phy_sleepwalk()
520 	mutex_unlock(&padctl->lock);  in tegra186_utmi_disable_phy_sleepwalk()
527 	struct tegra_xusb_padctl *padctl = lane->pad->padctl;  in tegra186_utmi_enable_phy_wake()
528 	unsigned int index = lane->index;  in tegra186_utmi_enable_phy_wake()
531 	mutex_lock(&padctl->lock);  in tegra186_utmi_enable_phy_wake()
545 	mutex_unlock(&padctl->lock);  in tegra186_utmi_enable_phy_wake()
552 	struct tegra_xusb_padctl *padctl = lane->pad->padctl;  in tegra186_utmi_disable_phy_wake()
553 	unsigned int index = lane->index;  in tegra186_utmi_disable_phy_wake()
556 	mutex_lock(&padctl->lock);  in tegra186_utmi_disable_phy_wake()
570 	mutex_unlock(&padctl->lock);  in tegra186_utmi_disable_phy_wake()
577 	struct tegra_xusb_padctl *padctl = lane->pad->padctl;  in tegra186_utmi_phy_remote_wake_detected()
578 	unsigned int index = lane->index;  in tegra186_utmi_phy_remote_wake_detected()
602 	struct device *dev = padctl->dev;  in tegra186_utmi_bias_pad_power_on()
606 	mutex_lock(&padctl->lock);  in tegra186_utmi_bias_pad_power_on()
608 	if (priv->bias_pad_enable++ > 0) {  in tegra186_utmi_bias_pad_power_on()
609 		mutex_unlock(&padctl->lock);  in tegra186_utmi_bias_pad_power_on()
613 	err = clk_prepare_enable(priv->usb2_trk_clk);  in tegra186_utmi_bias_pad_power_on()
627 	value |= HS_SQUELCH_LEVEL(priv->calib.hs_squelch);  in tegra186_utmi_bias_pad_power_on()
636 	if (padctl->soc->poll_trk_completed) {  in tegra186_utmi_bias_pad_power_on()
653 	if (padctl->soc->trk_hw_mode) {  in tegra186_utmi_bias_pad_power_on()
659 		clk_disable_unprepare(priv->usb2_trk_clk);  in tegra186_utmi_bias_pad_power_on()
662 	mutex_unlock(&padctl->lock);  in tegra186_utmi_bias_pad_power_on()
670 	mutex_lock(&padctl->lock);  in tegra186_utmi_bias_pad_power_off()
672 	if (WARN_ON(priv->bias_pad_enable == 0)) {  in tegra186_utmi_bias_pad_power_off()
673 		mutex_unlock(&padctl->lock);  in tegra186_utmi_bias_pad_power_off()
677 	if (--priv->bias_pad_enable > 0) {  in tegra186_utmi_bias_pad_power_off()
678 		mutex_unlock(&padctl->lock);  in tegra186_utmi_bias_pad_power_off()
686 	if (padctl->soc->trk_hw_mode) {  in tegra186_utmi_bias_pad_power_off()
690 		clk_disable_unprepare(priv->usb2_trk_clk);  in tegra186_utmi_bias_pad_power_off()
693 	mutex_unlock(&padctl->lock);  in tegra186_utmi_bias_pad_power_off()
699 	struct tegra_xusb_padctl *padctl = lane->pad->padctl;  in tegra186_utmi_pad_power_on()
701 	struct device *dev = padctl->dev;  in tegra186_utmi_pad_power_on()
702 	unsigned int index = lane->index;  in tegra186_utmi_pad_power_on()
732 	struct tegra_xusb_padctl *padctl = lane->pad->padctl;  in tegra186_utmi_pad_power_down()
733 	unsigned int index = lane->index;  in tegra186_utmi_pad_power_down()
739 	dev_dbg(padctl->dev, "power down UTMI pad %u\n", index);  in tegra186_utmi_pad_power_down()
759 	dev_dbg(padctl->dev, "%s vbus override\n", status ? "set" : "clear");  in tegra186_xusb_padctl_vbus_override()
781 	dev_dbg(padctl->dev, "%s id override\n", status ? "set" : "clear");  in tegra186_xusb_padctl_id_override()
810 	struct tegra_xusb_padctl *padctl = lane->pad->padctl;  in tegra186_utmi_phy_set_mode()
812 								lane->index);  in tegra186_utmi_phy_set_mode()
815 	mutex_lock(&padctl->lock);  in tegra186_utmi_phy_set_mode()
817 	dev_dbg(&port->base.dev, "%s: mode %d", __func__, mode);  in tegra186_utmi_phy_set_mode()
823 			err = regulator_enable(port->supply);  in tegra186_utmi_phy_set_mode()
832 			if (regulator_is_enabled(port->supply))  in tegra186_utmi_phy_set_mode()
833 				regulator_disable(port->supply);  in tegra186_utmi_phy_set_mode()
840 	mutex_unlock(&padctl->lock);  in tegra186_utmi_phy_set_mode()
849 	struct tegra_xusb_padctl *padctl = lane->pad->padctl;  in tegra186_utmi_phy_power_on()
852 	unsigned int index = lane->index;  in tegra186_utmi_phy_power_on()
853 	struct device *dev = padctl->dev;  in tegra186_utmi_phy_power_on()
859 		return -ENODEV;  in tegra186_utmi_phy_power_on()
870 	if (port->mode == USB_DR_MODE_UNKNOWN)  in tegra186_utmi_phy_power_on()
872 	else if (port->mode == USB_DR_MODE_PERIPHERAL)  in tegra186_utmi_phy_power_on()
874 	else if (port->mode == USB_DR_MODE_HOST)  in tegra186_utmi_phy_power_on()
876 	else if (port->mode == USB_DR_MODE_OTG)  in tegra186_utmi_phy_power_on()
886 	if (usb2->hs_curr_level_offset) {  in tegra186_utmi_phy_power_on()
889 		hs_current_level = (int)priv->calib.hs_curr_level[index] +  in tegra186_utmi_phy_power_on()
890 						usb2->hs_curr_level_offset;  in tegra186_utmi_phy_power_on()
899 		value |= HS_CURR_LEVEL(priv->calib.hs_curr_level[index]);  in tegra186_utmi_phy_power_on()
906 	value |= TERM_RANGE_ADJ(priv->calib.hs_term_range_adj);  in tegra186_utmi_phy_power_on()
908 	value |= RPD_CTRL(priv->calib.rpd_ctrl);  in tegra186_utmi_phy_power_on()
926 	struct tegra_xusb_padctl *padctl = lane->pad->padctl;  in tegra186_utmi_phy_init()
928 	unsigned int index = lane->index;  in tegra186_utmi_phy_init()
929 	struct device *dev = padctl->dev;  in tegra186_utmi_phy_init()
935 		return -ENODEV;  in tegra186_utmi_phy_init()
938 	if (port->supply && port->mode == USB_DR_MODE_HOST) {  in tegra186_utmi_phy_init()
939 		err = regulator_enable(port->supply);  in tegra186_utmi_phy_init()
953 	struct tegra_xusb_padctl *padctl = lane->pad->padctl;  in tegra186_utmi_phy_exit()
955 	unsigned int index = lane->index;  in tegra186_utmi_phy_exit()
956 	struct device *dev = padctl->dev;  in tegra186_utmi_phy_exit()
962 		return -ENODEV;  in tegra186_utmi_phy_exit()
965 	if (port->supply && port->mode == USB_DR_MODE_HOST) {  in tegra186_utmi_phy_exit()
966 		err = regulator_disable(port->supply);  in tegra186_utmi_phy_exit()
998 		return ERR_PTR(-ENOMEM);  in tegra186_usb2_pad_probe()
1000 	pad = &usb2->base;  in tegra186_usb2_pad_probe()
1001 	pad->ops = &tegra186_usb2_lane_ops;  in tegra186_usb2_pad_probe()
1002 	pad->soc = soc;  in tegra186_usb2_pad_probe()
1010 	priv->usb2_trk_clk = devm_clk_get(&pad->dev, "trk");  in tegra186_usb2_pad_probe()
1011 	if (IS_ERR(priv->usb2_trk_clk)) {  in tegra186_usb2_pad_probe()
1012 		err = PTR_ERR(priv->usb2_trk_clk);  in tegra186_usb2_pad_probe()
1013 		dev_dbg(&pad->dev, "failed to get usb2 trk clock: %d\n", err);  in tegra186_usb2_pad_probe()
1021 	dev_set_drvdata(&pad->dev, pad);  in tegra186_usb2_pad_probe()
1026 	device_unregister(&pad->dev);  in tegra186_usb2_pad_probe()
1059 	return tegra_xusb_find_lane(port->padctl, "usb2", port->index);  in tegra186_usb2_port_map()
1080 		return ERR_PTR(-ENOMEM);  in tegra186_usb3_lane_probe()
1082 	INIT_LIST_HEAD(&usb3->base.list);  in tegra186_usb3_lane_probe()
1083 	usb3->base.soc = &pad->soc->lanes[index];  in tegra186_usb3_lane_probe()
1084 	usb3->base.index = index;  in tegra186_usb3_lane_probe()
1085 	usb3->base.pad = pad;  in tegra186_usb3_lane_probe()
1086 	usb3->base.np = np;  in tegra186_usb3_lane_probe()
1088 	err = tegra_xusb_lane_parse_dt(&usb3->base, np);  in tegra186_usb3_lane_probe()
1094 	return &usb3->base;  in tegra186_usb3_lane_probe()
1107 	struct tegra_xusb_padctl *padctl = lane->pad->padctl;  in tegra186_usb3_enable_phy_sleepwalk()
1108 	unsigned int index = lane->index;  in tegra186_usb3_enable_phy_sleepwalk()
1111 	mutex_lock(&padctl->lock);  in tegra186_usb3_enable_phy_sleepwalk()
1125 	mutex_unlock(&padctl->lock);  in tegra186_usb3_enable_phy_sleepwalk()
1132 	struct tegra_xusb_padctl *padctl = lane->pad->padctl;  in tegra186_usb3_disable_phy_sleepwalk()
1133 	unsigned int index = lane->index;  in tegra186_usb3_disable_phy_sleepwalk()
1136 	mutex_lock(&padctl->lock);  in tegra186_usb3_disable_phy_sleepwalk()
1148 	mutex_unlock(&padctl->lock);  in tegra186_usb3_disable_phy_sleepwalk()
1155 	struct tegra_xusb_padctl *padctl = lane->pad->padctl;  in tegra186_usb3_enable_phy_wake()
1156 	unsigned int index = lane->index;  in tegra186_usb3_enable_phy_wake()
1159 	mutex_lock(&padctl->lock);  in tegra186_usb3_enable_phy_wake()
1173 	mutex_unlock(&padctl->lock);  in tegra186_usb3_enable_phy_wake()
1180 	struct tegra_xusb_padctl *padctl = lane->pad->padctl;  in tegra186_usb3_disable_phy_wake()
1181 	unsigned int index = lane->index;  in tegra186_usb3_disable_phy_wake()
1184 	mutex_lock(&padctl->lock);  in tegra186_usb3_disable_phy_wake()
1198 	mutex_unlock(&padctl->lock);  in tegra186_usb3_disable_phy_wake()
1205 	struct tegra_xusb_padctl *padctl = lane->pad->padctl;  in tegra186_usb3_phy_remote_wake_detected()
1206 	unsigned int index = lane->index;  in tegra186_usb3_phy_remote_wake_detected()
1238 	return tegra_xusb_find_lane(port->padctl, "usb3", port->index);  in tegra186_usb3_port_map()
1251 	struct tegra_xusb_padctl *padctl = lane->pad->padctl;  in tegra186_usb3_phy_power_on()
1254 	unsigned int index = lane->index;  in tegra186_usb3_phy_power_on()
1255 	struct device *dev = padctl->dev;  in tegra186_usb3_phy_power_on()
1261 		return -ENODEV;  in tegra186_usb3_phy_power_on()
1264 	usb2 = tegra_xusb_find_usb2_port(padctl, port->port);  in tegra186_usb3_phy_power_on()
1268 		return -ENODEV;  in tegra186_usb3_phy_power_on()
1271 	mutex_lock(&padctl->lock);  in tegra186_usb3_phy_power_on()
1276 	if (usb2->mode == USB_DR_MODE_UNKNOWN)  in tegra186_usb3_phy_power_on()
1278 	else if (usb2->mode == USB_DR_MODE_PERIPHERAL)  in tegra186_usb3_phy_power_on()
1280 	else if (usb2->mode == USB_DR_MODE_HOST)  in tegra186_usb3_phy_power_on()
1282 	else if (usb2->mode == USB_DR_MODE_OTG)  in tegra186_usb3_phy_power_on()
1287 	if (padctl->soc->supports_gen2 && port->disable_gen2) {  in tegra186_usb3_phy_power_on()
1312 	mutex_unlock(&padctl->lock);  in tegra186_usb3_phy_power_on()
1320 	struct tegra_xusb_padctl *padctl = lane->pad->padctl;  in tegra186_usb3_phy_power_off()
1322 	unsigned int index = lane->index;  in tegra186_usb3_phy_power_off()
1323 	struct device *dev = padctl->dev;  in tegra186_usb3_phy_power_off()
1329 		return -ENODEV;  in tegra186_usb3_phy_power_off()
1332 	mutex_lock(&padctl->lock);  in tegra186_usb3_phy_power_off()
1350 	mutex_unlock(&padctl->lock);  in tegra186_usb3_phy_power_off()
1384 		return ERR_PTR(-ENOMEM);  in tegra186_usb3_pad_probe()
1386 	pad = &usb3->base;  in tegra186_usb3_pad_probe()
1387 	pad->ops = &tegra186_usb3_lane_ops;  in tegra186_usb3_pad_probe()
1388 	pad->soc = soc;  in tegra186_usb3_pad_probe()
1400 	dev_set_drvdata(&pad->dev, pad);  in tegra186_usb3_pad_probe()
1405 	device_unregister(&pad->dev);  in tegra186_usb3_pad_probe()
1429 	struct device *dev = padctl->base.dev;  in tegra186_xusb_read_fuse_calibration()
1434 	count = padctl->base.soc->ports.usb2.count;  in tegra186_xusb_read_fuse_calibration()
1438 		return -ENOMEM;  in tegra186_xusb_read_fuse_calibration()
1451 	padctl->calib.hs_curr_level = level;  in tegra186_xusb_read_fuse_calibration()
1453 	padctl->calib.hs_squelch = (value >> HS_SQUELCH_SHIFT) &  in tegra186_xusb_read_fuse_calibration()
1455 	padctl->calib.hs_term_range_adj = (value >> HS_TERM_RANGE_ADJ_SHIFT) &  in tegra186_xusb_read_fuse_calibration()
1466 	padctl->calib.rpd_ctrl = (value >> RPD_CTRL_SHIFT) & RPD_CTRL_MASK;  in tegra186_xusb_read_fuse_calibration()
1482 		return ERR_PTR(-ENOMEM);  in tegra186_xusb_padctl_probe()
1484 	priv->base.dev = dev;  in tegra186_xusb_padctl_probe()
1485 	priv->base.soc = soc;  in tegra186_xusb_padctl_probe()
1488 	priv->ao_regs = devm_ioremap_resource(dev, res);  in tegra186_xusb_padctl_probe()
1489 	if (IS_ERR(priv->ao_regs))  in tegra186_xusb_padctl_probe()
1490 		return ERR_CAST(priv->ao_regs);  in tegra186_xusb_padctl_probe()
1496 	return &priv->base;  in tegra186_xusb_padctl_probe()
1503 	priv->context.vbus_id = padctl_readl(padctl, USB2_VBUS_ID);  in tegra186_xusb_padctl_save()
1504 	priv->context.usb2_pad_mux = padctl_readl(padctl, XUSB_PADCTL_USB2_PAD_MUX);  in tegra186_xusb_padctl_save()
1505 	priv->context.usb2_port_cap = padctl_readl(padctl, XUSB_PADCTL_USB2_PORT_CAP);  in tegra186_xusb_padctl_save()
1506 	priv->context.ss_port_cap = padctl_readl(padctl, XUSB_PADCTL_SS_PORT_CAP);  in tegra186_xusb_padctl_save()
1513 	padctl_writel(padctl, priv->context.usb2_pad_mux, XUSB_PADCTL_USB2_PAD_MUX);  in tegra186_xusb_padctl_restore()
1514 	padctl_writel(padctl, priv->context.usb2_port_cap, XUSB_PADCTL_USB2_PORT_CAP);  in tegra186_xusb_padctl_restore()
1515 	padctl_writel(padctl, priv->context.ss_port_cap, XUSB_PADCTL_SS_PORT_CAP);  in tegra186_xusb_padctl_restore()
1516 	padctl_writel(padctl, priv->context.vbus_id, USB2_VBUS_ID);  in tegra186_xusb_padctl_restore()
1549 	"avdd-pll-erefeut",
1550 	"avdd-usb",
1551 	"vclamp-usb",
1552 	"vddio-hsic",
1556 	TEGRA186_LANE("usb2-0", 0,  0, 0, usb2),
1557 	TEGRA186_LANE("usb2-1", 0,  0, 0, usb2),
1558 	TEGRA186_LANE("usb2-2", 0,  0, 0, usb2),
1569 	TEGRA186_LANE("usb3-0", 0,  0, 0, usb3),
1570 	TEGRA186_LANE("usb3-1", 0,  0, 0, usb3),
1571 	TEGRA186_LANE("usb3-2", 0,  0, 0, usb3),
1598 		.hsic = {
1618 	"avdd-usb",
1619 	"vclamp-usb",
1623 	TEGRA186_LANE("usb2-0", 0,  0, 0, usb2),
1624 	TEGRA186_LANE("usb2-1", 0,  0, 0, usb2),
1625 	TEGRA186_LANE("usb2-2", 0,  0, 0, usb2),
1626 	TEGRA186_LANE("usb2-3", 0,  0, 0, usb2),
1637 	TEGRA186_LANE("usb3-0", 0,  0, 0, usb3),
1638 	TEGRA186_LANE("usb3-1", 0,  0, 0, usb3),
1639 	TEGRA186_LANE("usb3-2", 0,  0, 0, usb3),
1640 	TEGRA186_LANE("usb3-3", 0,  0, 0, usb3),