1 // SPDX-License-Identifier: GPL-2.0
6 #include <linux/clk.h>
7 #include <linux/clk-provider.h>
26 #include "phy-qcom-qmp-common.h"
28 #include "phy-qcom-qmp.h"
29 #include "phy-qcom-qmp-pcs-misc-v3.h"
33 /* set of registers with offsets different per-PHY */
288 	u16 serdes;  member
298 /* struct qmp_phy_cfg - per-PHY initialization config */
302 	/* Init sequence for PHY blocks - serdes, tx, rx, pcs */
325 	void __iomem *serdes;  member
336 	struct clk *pipe_clk;
396 	"vdda-phy", "vdda-pll",
400 	.serdes		= 0x0,
460 	const struct qmp_phy_cfg *cfg = qmp->cfg;  in qmp_usbc_init()
461 	void __iomem *pcs = qmp->pcs;  in qmp_usbc_init()
465 	ret = regulator_bulk_enable(cfg->num_vregs, qmp->vregs);  in qmp_usbc_init()
467 		dev_err(qmp->dev, "failed to enable regulators, err=%d\n", ret);  in qmp_usbc_init()
471 	ret = reset_control_bulk_assert(qmp->num_resets, qmp->resets);  in qmp_usbc_init()
473 		dev_err(qmp->dev, "reset assert failed\n");  in qmp_usbc_init()
477 	ret = reset_control_bulk_deassert(qmp->num_resets, qmp->resets);  in qmp_usbc_init()
479 		dev_err(qmp->dev, "reset deassert failed\n");  in qmp_usbc_init()
483 	ret = clk_bulk_prepare_enable(qmp->num_clks, qmp->clks);  in qmp_usbc_init()
487 	qphy_setbits(pcs, cfg->regs[QPHY_PCS_POWER_DOWN_CONTROL], SW_PWRDN);  in qmp_usbc_init()
493 	if (qmp->orientation == TYPEC_ORIENTATION_REVERSE)  in qmp_usbc_init()
495 	writel(val, qmp->pcs_misc);  in qmp_usbc_init()
500 	reset_control_bulk_assert(qmp->num_resets, qmp->resets);  in qmp_usbc_init()
502 	regulator_bulk_disable(cfg->num_vregs, qmp->vregs);  in qmp_usbc_init()
510 	const struct qmp_phy_cfg *cfg = qmp->cfg;  in qmp_usbc_exit()
512 	reset_control_bulk_assert(qmp->num_resets, qmp->resets);  in qmp_usbc_exit()
514 	clk_bulk_disable_unprepare(qmp->num_clks, qmp->clks);  in qmp_usbc_exit()
516 	regulator_bulk_disable(cfg->num_vregs, qmp->vregs);  in qmp_usbc_exit()
524 	const struct qmp_phy_cfg *cfg = qmp->cfg;  in qmp_usbc_power_on()
529 	qmp_configure(qmp->dev, qmp->serdes, cfg->serdes_tbl,  in qmp_usbc_power_on()
530 		      cfg->serdes_tbl_num);  in qmp_usbc_power_on()
532 	ret = clk_prepare_enable(qmp->pipe_clk);  in qmp_usbc_power_on()
534 		dev_err(qmp->dev, "pipe_clk enable failed err=%d\n", ret);  in qmp_usbc_power_on()
539 	qmp_configure_lane(qmp->dev, qmp->tx, cfg->tx_tbl, cfg->tx_tbl_num, 1);  in qmp_usbc_power_on()
540 	qmp_configure_lane(qmp->dev, qmp->rx, cfg->rx_tbl, cfg->rx_tbl_num, 1);  in qmp_usbc_power_on()
542 	qmp_configure_lane(qmp->dev, qmp->tx2, cfg->tx_tbl, cfg->tx_tbl_num, 2);  in qmp_usbc_power_on()
543 	qmp_configure_lane(qmp->dev, qmp->rx2, cfg->rx_tbl, cfg->rx_tbl_num, 2);  in qmp_usbc_power_on()
545 	qmp_configure(qmp->dev, qmp->pcs, cfg->pcs_tbl, cfg->pcs_tbl_num);  in qmp_usbc_power_on()
548 	qphy_clrbits(qmp->pcs, cfg->regs[QPHY_SW_RESET], SW_RESET);  in qmp_usbc_power_on()
550 	/* start SerDes and Phy-Coding-Sublayer */  in qmp_usbc_power_on()
551 	qphy_setbits(qmp->pcs, cfg->regs[QPHY_START_CTRL], SERDES_START | PCS_START);  in qmp_usbc_power_on()
553 	status = qmp->pcs + cfg->regs[QPHY_PCS_STATUS];  in qmp_usbc_power_on()
557 		dev_err(qmp->dev, "phy initialization timed-out\n");  in qmp_usbc_power_on()
564 	clk_disable_unprepare(qmp->pipe_clk);  in qmp_usbc_power_on()
572 	const struct qmp_phy_cfg *cfg = qmp->cfg;  in qmp_usbc_power_off()
574 	clk_disable_unprepare(qmp->pipe_clk);  in qmp_usbc_power_off()
577 	qphy_setbits(qmp->pcs, cfg->regs[QPHY_SW_RESET], SW_RESET);  in qmp_usbc_power_off()
579 	/* stop SerDes and Phy-Coding-Sublayer */  in qmp_usbc_power_off()
580 	qphy_clrbits(qmp->pcs, cfg->regs[QPHY_START_CTRL],  in qmp_usbc_power_off()
584 	qphy_clrbits(qmp->pcs, cfg->regs[QPHY_PCS_POWER_DOWN_CONTROL],  in qmp_usbc_power_off()
595 	mutex_lock(&qmp->phy_mutex);  in qmp_usbc_enable()
607 	qmp->usb_init_count++;  in qmp_usbc_enable()
609 	mutex_unlock(&qmp->phy_mutex);  in qmp_usbc_enable()
619 	qmp->usb_init_count--;  in qmp_usbc_disable()
630 	qmp->mode = mode;  in qmp_usbc_set_mode()
644 	const struct qmp_phy_cfg *cfg = qmp->cfg;  in qmp_usbc_enable_autonomous_mode()
645 	void __iomem *pcs = qmp->pcs;  in qmp_usbc_enable_autonomous_mode()
648 	if (qmp->mode == PHY_MODE_USB_HOST_SS ||  in qmp_usbc_enable_autonomous_mode()
649 	    qmp->mode == PHY_MODE_USB_DEVICE_SS)  in qmp_usbc_enable_autonomous_mode()
655 	qphy_setbits(pcs, cfg->regs[QPHY_PCS_LFPS_RXTERM_IRQ_CLEAR], IRQ_CLEAR);  in qmp_usbc_enable_autonomous_mode()
657 	qphy_clrbits(pcs, cfg->regs[QPHY_PCS_LFPS_RXTERM_IRQ_CLEAR], IRQ_CLEAR);  in qmp_usbc_enable_autonomous_mode()
659 	qphy_clrbits(pcs, cfg->regs[QPHY_PCS_AUTONOMOUS_MODE_CTRL],  in qmp_usbc_enable_autonomous_mode()
663 	qphy_setbits(pcs, cfg->regs[QPHY_PCS_AUTONOMOUS_MODE_CTRL], intr_mask);  in qmp_usbc_enable_autonomous_mode()
666 	if (qmp->tcsr_map && qmp->vls_clamp_reg)  in qmp_usbc_enable_autonomous_mode()
667 		regmap_write(qmp->tcsr_map, qmp->vls_clamp_reg, 1);  in qmp_usbc_enable_autonomous_mode()
672 	const struct qmp_phy_cfg *cfg = qmp->cfg;  in qmp_usbc_disable_autonomous_mode()
673 	void __iomem *pcs = qmp->pcs;  in qmp_usbc_disable_autonomous_mode()
676 	if (qmp->tcsr_map && qmp->vls_clamp_reg)  in qmp_usbc_disable_autonomous_mode()
677 		regmap_write(qmp->tcsr_map, qmp->vls_clamp_reg, 0);  in qmp_usbc_disable_autonomous_mode()
679 	qphy_clrbits(pcs, cfg->regs[QPHY_PCS_AUTONOMOUS_MODE_CTRL],  in qmp_usbc_disable_autonomous_mode()
682 	qphy_setbits(pcs, cfg->regs[QPHY_PCS_LFPS_RXTERM_IRQ_CLEAR], IRQ_CLEAR);  in qmp_usbc_disable_autonomous_mode()
684 	qphy_clrbits(pcs, cfg->regs[QPHY_PCS_LFPS_RXTERM_IRQ_CLEAR], IRQ_CLEAR);  in qmp_usbc_disable_autonomous_mode()
691 	dev_vdbg(dev, "Suspending QMP phy, mode:%d\n", qmp->mode);  in qmp_usbc_runtime_suspend()
693 	if (!qmp->phy->init_count) {  in qmp_usbc_runtime_suspend()
700 	clk_disable_unprepare(qmp->pipe_clk);  in qmp_usbc_runtime_suspend()
701 	clk_bulk_disable_unprepare(qmp->num_clks, qmp->clks);  in qmp_usbc_runtime_suspend()
711 	dev_vdbg(dev, "Resuming QMP phy, mode:%d\n", qmp->mode);  in qmp_usbc_runtime_resume()
713 	if (!qmp->phy->init_count) {  in qmp_usbc_runtime_resume()
718 	ret = clk_bulk_prepare_enable(qmp->num_clks, qmp->clks);  in qmp_usbc_runtime_resume()
722 	ret = clk_prepare_enable(qmp->pipe_clk);  in qmp_usbc_runtime_resume()
725 		clk_bulk_disable_unprepare(qmp->num_clks, qmp->clks);  in qmp_usbc_runtime_resume()
741 	const struct qmp_phy_cfg *cfg = qmp->cfg;  in qmp_usbc_vreg_init()
742 	struct device *dev = qmp->dev;  in qmp_usbc_vreg_init()
743 	int num = cfg->num_vregs;  in qmp_usbc_vreg_init()
746 	qmp->vregs = devm_kcalloc(dev, num, sizeof(*qmp->vregs), GFP_KERNEL);  in qmp_usbc_vreg_init()
747 	if (!qmp->vregs)  in qmp_usbc_vreg_init()
748 		return -ENOMEM;  in qmp_usbc_vreg_init()
751 		qmp->vregs[i].supply = cfg->vreg_list[i];  in qmp_usbc_vreg_init()
753 	return devm_regulator_bulk_get(dev, num, qmp->vregs);  in qmp_usbc_vreg_init()
760 	struct device *dev = qmp->dev;  in qmp_usbc_reset_init()
764 	qmp->resets = devm_kcalloc(dev, num_resets,  in qmp_usbc_reset_init()
765 				   sizeof(*qmp->resets), GFP_KERNEL);  in qmp_usbc_reset_init()
766 	if (!qmp->resets)  in qmp_usbc_reset_init()
767 		return -ENOMEM;  in qmp_usbc_reset_init()
770 		qmp->resets[i].id = reset_list[i];  in qmp_usbc_reset_init()
772 	qmp->num_resets = num_resets;  in qmp_usbc_reset_init()
774 	ret = devm_reset_control_bulk_get_exclusive(dev, num_resets, qmp->resets);  in qmp_usbc_reset_init()
783 	struct device *dev = qmp->dev;  in qmp_usbc_clk_init()
787 	qmp->clks = devm_kcalloc(dev, num, sizeof(*qmp->clks), GFP_KERNEL);  in qmp_usbc_clk_init()
788 	if (!qmp->clks)  in qmp_usbc_clk_init()
789 		return -ENOMEM;  in qmp_usbc_clk_init()
792 		qmp->clks[i].id = qmp_usbc_phy_clk_l[i];  in qmp_usbc_clk_init()
794 	qmp->num_clks = num;  in qmp_usbc_clk_init()
796 	return devm_clk_bulk_get_optional(dev, num, qmp->clks);  in qmp_usbc_clk_init()
814  *         +---------------+
815  *         |   PHY block   |<<---------------------------------------+
817  *         |   +-------+   |                   +-----+               |
818  *   I/P---^-->|  PLL  |---^--->pipe_clksrc--->| GCC |--->pipe_clk---+
819  *    clk  |   +-------+   |                   +-----+
820  *         +---------------+
824 	struct clk_fixed_rate *fixed = &qmp->pipe_clk_fixed;  in phy_pipe_clk_register()
828 	ret = of_property_read_string(np, "clock-output-names", &init.name);  in phy_pipe_clk_register()
830 		dev_err(qmp->dev, "%pOFn: No clock-output-names\n", np);  in phy_pipe_clk_register()
837 	fixed->fixed_rate = 125000000;  in phy_pipe_clk_register()
838 	fixed->hw.init = &init;  in phy_pipe_clk_register()
840 	ret = devm_clk_hw_register(qmp->dev, &fixed->hw);  in phy_pipe_clk_register()
844 	ret = of_clk_add_hw_provider(np, of_clk_hw_simple_get, &fixed->hw);  in phy_pipe_clk_register()
852 	return devm_add_action_or_reset(qmp->dev, phy_clk_release_provider, np);  in phy_pipe_clk_register()
861 	if (orientation == qmp->orientation || orientation == TYPEC_ORIENTATION_NONE)  in qmp_usbc_typec_switch_set()
864 	mutex_lock(&qmp->phy_mutex);  in qmp_usbc_typec_switch_set()
865 	qmp->orientation = orientation;  in qmp_usbc_typec_switch_set()
867 	if (qmp->usb_init_count) {  in qmp_usbc_typec_switch_set()
868 		qmp_usbc_power_off(qmp->phy);  in qmp_usbc_typec_switch_set()
869 		qmp_usbc_exit(qmp->phy);  in qmp_usbc_typec_switch_set()
871 		qmp_usbc_init(qmp->phy);  in qmp_usbc_typec_switch_set()
872 		qmp_usbc_power_on(qmp->phy);  in qmp_usbc_typec_switch_set()
875 	mutex_unlock(&qmp->phy_mutex);  in qmp_usbc_typec_switch_set()
884 	typec_switch_unregister(qmp->sw);  in qmp_usbc_typec_unregister()
890 	struct device *dev = qmp->dev;  in qmp_usbc_typec_switch_register()
893 	sw_desc.fwnode = dev->fwnode;  in qmp_usbc_typec_switch_register()
895 	qmp->sw = typec_switch_register(dev, &sw_desc);  in qmp_usbc_typec_switch_register()
896 	if (IS_ERR(qmp->sw)) {  in qmp_usbc_typec_switch_register()
897 		dev_err(dev, "Unable to register typec switch: %pe\n", qmp->sw);  in qmp_usbc_typec_switch_register()
898 		return PTR_ERR(qmp->sw);  in qmp_usbc_typec_switch_register()
912 	struct platform_device *pdev = to_platform_device(qmp->dev);  in qmp_usbc_parse_dt_legacy()
913 	struct device *dev = qmp->dev;  in qmp_usbc_parse_dt_legacy()
916 	qmp->serdes = devm_platform_ioremap_resource(pdev, 0);  in qmp_usbc_parse_dt_legacy()
917 	if (IS_ERR(qmp->serdes))  in qmp_usbc_parse_dt_legacy()
918 		return PTR_ERR(qmp->serdes);  in qmp_usbc_parse_dt_legacy()
922 	 * Resources are indexed as: tx -> 0; rx -> 1; pcs -> 2.  in qmp_usbc_parse_dt_legacy()
923 	 * For dual lane PHYs: tx2 -> 3, rx2 -> 4, pcs_misc (optional) -> 5  in qmp_usbc_parse_dt_legacy()
924 	 * For single lane PHYs: pcs_misc (optional) -> 3.  in qmp_usbc_parse_dt_legacy()
926 	qmp->tx = devm_of_iomap(dev, np, 0, NULL);  in qmp_usbc_parse_dt_legacy()
927 	if (IS_ERR(qmp->tx))  in qmp_usbc_parse_dt_legacy()
928 		return PTR_ERR(qmp->tx);  in qmp_usbc_parse_dt_legacy()
930 	qmp->rx = devm_of_iomap(dev, np, 1, NULL);  in qmp_usbc_parse_dt_legacy()
931 	if (IS_ERR(qmp->rx))  in qmp_usbc_parse_dt_legacy()
932 		return PTR_ERR(qmp->rx);  in qmp_usbc_parse_dt_legacy()
934 	qmp->pcs = devm_of_iomap(dev, np, 2, NULL);  in qmp_usbc_parse_dt_legacy()
935 	if (IS_ERR(qmp->pcs))  in qmp_usbc_parse_dt_legacy()
936 		return PTR_ERR(qmp->pcs);  in qmp_usbc_parse_dt_legacy()
938 	qmp->tx2 = devm_of_iomap(dev, np, 3, NULL);  in qmp_usbc_parse_dt_legacy()
939 	if (IS_ERR(qmp->tx2))  in qmp_usbc_parse_dt_legacy()
940 		return PTR_ERR(qmp->tx2);  in qmp_usbc_parse_dt_legacy()
942 	qmp->rx2 = devm_of_iomap(dev, np, 4, NULL);  in qmp_usbc_parse_dt_legacy()
943 	if (IS_ERR(qmp->rx2))  in qmp_usbc_parse_dt_legacy()
944 		return PTR_ERR(qmp->rx2);  in qmp_usbc_parse_dt_legacy()
946 	qmp->pcs_misc = devm_of_iomap(dev, np, 5, NULL);  in qmp_usbc_parse_dt_legacy()
947 	if (IS_ERR(qmp->pcs_misc)) {  in qmp_usbc_parse_dt_legacy()
948 		dev_vdbg(dev, "PHY pcs_misc-reg not used\n");  in qmp_usbc_parse_dt_legacy()
949 		qmp->pcs_misc = NULL;  in qmp_usbc_parse_dt_legacy()
952 	qmp->pipe_clk = devm_get_clk_from_child(dev, np, NULL);  in qmp_usbc_parse_dt_legacy()
953 	if (IS_ERR(qmp->pipe_clk)) {  in qmp_usbc_parse_dt_legacy()
954 		return dev_err_probe(dev, PTR_ERR(qmp->pipe_clk),  in qmp_usbc_parse_dt_legacy()
958 	ret = devm_clk_bulk_get_all(qmp->dev, &qmp->clks);  in qmp_usbc_parse_dt_legacy()
962 	qmp->num_clks = ret;  in qmp_usbc_parse_dt_legacy()
974 	struct platform_device *pdev = to_platform_device(qmp->dev);  in qmp_usbc_parse_dt()
975 	const struct qmp_phy_cfg *cfg = qmp->cfg;  in qmp_usbc_parse_dt()
976 	const struct qmp_usbc_offsets *offs = cfg->offsets;  in qmp_usbc_parse_dt()
977 	struct device *dev = qmp->dev;  in qmp_usbc_parse_dt()
982 		return -EINVAL;  in qmp_usbc_parse_dt()
988 	qmp->serdes = base + offs->serdes;  in qmp_usbc_parse_dt()
989 	qmp->pcs = base + offs->pcs;  in qmp_usbc_parse_dt()
990 	if (offs->pcs_misc)  in qmp_usbc_parse_dt()
991 		qmp->pcs_misc = base + offs->pcs_misc;  in qmp_usbc_parse_dt()
992 	qmp->tx = base + offs->tx;  in qmp_usbc_parse_dt()
993 	qmp->rx = base + offs->rx;  in qmp_usbc_parse_dt()
995 	qmp->tx2 = base + offs->tx2;  in qmp_usbc_parse_dt()
996 	qmp->rx2 = base + offs->rx2;  in qmp_usbc_parse_dt()
1002 	qmp->pipe_clk = devm_clk_get(dev, "pipe");  in qmp_usbc_parse_dt()
1003 	if (IS_ERR(qmp->pipe_clk)) {  in qmp_usbc_parse_dt()
1004 		return dev_err_probe(dev, PTR_ERR(qmp->pipe_clk),  in qmp_usbc_parse_dt()
1019 	struct device *dev = qmp->dev;  in qmp_usbc_parse_vls_clamp()
1023 	ret = of_parse_phandle_with_fixed_args(dev->of_node, "qcom,tcsr-reg", 1, 0,  in qmp_usbc_parse_vls_clamp()
1025 	if (ret == -ENOENT)  in qmp_usbc_parse_vls_clamp()
1028 		return dev_err_probe(dev, ret, "Failed to parse qcom,tcsr-reg\n");  in qmp_usbc_parse_vls_clamp()
1030 	qmp->tcsr_map = syscon_node_to_regmap(tcsr_args.np);  in qmp_usbc_parse_vls_clamp()
1032 	if (IS_ERR(qmp->tcsr_map))  in qmp_usbc_parse_vls_clamp()
1033 		return PTR_ERR(qmp->tcsr_map);  in qmp_usbc_parse_vls_clamp()
1035 	qmp->vls_clamp_reg = tcsr_args.args[0];  in qmp_usbc_parse_vls_clamp()
1042 	struct device *dev = &pdev->dev;  in qmp_usbc_probe()
1050 		return -ENOMEM;  in qmp_usbc_probe()
1052 	qmp->dev = dev;  in qmp_usbc_probe()
1055 	qmp->orientation = TYPEC_ORIENTATION_NORMAL;  in qmp_usbc_probe()
1057 	qmp->cfg = of_device_get_match_data(dev);  in qmp_usbc_probe()
1058 	if (!qmp->cfg)  in qmp_usbc_probe()
1059 		return -EINVAL;  in qmp_usbc_probe()
1061 	mutex_init(&qmp->phy_mutex);  in qmp_usbc_probe()
1076 	np = of_get_child_by_name(dev->of_node, "phy");  in qmp_usbc_probe()
1080 		np = of_node_get(dev->of_node);  in qmp_usbc_probe()
1100 	qmp->phy = devm_phy_create(dev, np, &qmp_usbc_phy_ops);  in qmp_usbc_probe()
1101 	if (IS_ERR(qmp->phy)) {  in qmp_usbc_probe()
1102 		ret = PTR_ERR(qmp->phy);  in qmp_usbc_probe()
1107 	phy_set_drvdata(qmp->phy, qmp);  in qmp_usbc_probe()
1122 		.compatible = "qcom,msm8998-qmp-usb3-phy",
1125 		.compatible = "qcom,qcm2290-qmp-usb3-phy",
1128 		.compatible = "qcom,sdm660-qmp-usb3-phy",
1131 		.compatible = "qcom,sm6115-qmp-usb3-phy",
1141 		.name	= "qcom-qmp-usbc-phy",
1150 MODULE_DESCRIPTION("Qualcomm QMP USB-C PHY driver");