1 /*-
49 #include <dt-bindings/pinctrl/pinctrl-tegra-xusb.h>
170 #define	WR4(_sc, _r, _v)	bus_write_4((_sc)->mem_res, (_r), (_v))
171 #define	RD4(_sc, _r)		bus_read_4((_sc)->mem_res, (_r))
177 	int		phy_ena_cnt;
190 	{"nvidia,tegra124-xusb-padctl",	1},
207 	int			idx;
208 	int			(*init)(struct padctl_softc *sc,
209 				    struct padctl_port *port);
219 static int usb3_port_init(struct padctl_softc *sc, struct padctl_port *port);
221 #define	PORT(t, n, p, i) {						\  macro
223 	.name = n "-" #p,						\
229 	PORT(PADCTL_PORT_USB2, "usb2", 0, NULL),
230 	PORT(PADCTL_PORT_USB2, "usb2", 1, NULL),
231 	PORT(PADCTL_PORT_USB2, "usb2", 2, NULL),
232 	PORT(PADCTL_PORT_ULPI, "ulpi", 0, NULL),
233 	PORT(PADCTL_PORT_HSIC, "hsic", 0, NULL),
234 	PORT(PADCTL_PORT_HSIC, "hsic", 1, NULL),
235 	PORT(PADCTL_PORT_USB3, "usb3", 0, usb3_port_init),
236 	PORT(PADCTL_PORT_USB3, "usb3", 1, usb3_port_init),
239 /* Pads - a group of lannes. */
252 	int			(*powerup)(struct padctl_softc *sc,
254 	int			(*powerdown)(struct padctl_softc *sc,
259 	int			nlanes;
262 static int usb2_powerup(struct padctl_softc *sc, struct padctl_lane *lane);
263 static int usb2_powerdown(struct padctl_softc *sc, struct padctl_lane *lane);
264 static int pcie_powerup(struct padctl_softc *sc, struct padctl_lane *lane);
265 static int pcie_powerdown(struct padctl_softc *sc, struct padctl_lane *lane);
266 static int sata_powerup(struct padctl_softc *sc, struct padctl_lane *lane);
267 static int sata_powerdown(struct padctl_softc *sc, struct padctl_lane *lane);
286 static char *pci_mux[] = {"pcie", "usb3-ss", "sata", "rsvd"};
290 	int			idx;
294 	char			**mux;  member
295 	int			nmux;
299 	struct padctl_port	*port;  member
300 	int			mux_idx;
305 	.name = n "-" #p,						\
310 	.mux = mx,							\
328 /* Define all possible mappings for USB3 port lanes */
330 	int			port_idx;
332 	int			lane_idx;
341 	LANE_MAP(0, PADCTL_PAD_PCIE, 0), 	/* port USB3-0 -> lane PCIE-0 */
342 	LANE_MAP(1, PADCTL_PAD_PCIE, 1), 	/* port USB3-1 -> lane PCIE-1 */
343 						/* -- or -- */
344 	LANE_MAP(1, PADCTL_PAD_SATA, 0), 	/* port USB3-1 -> lane SATA-0 */
348 static int xusbpadctl_phy_enable(struct phynode *phy, bool enable);
359 /* -------------------------------------------------------------------------
363 static int
364 usb3_port_init(struct padctl_softc *sc, struct padctl_port *port)  in usb3_port_init()  argument
369 	if (port->internal)  in usb3_port_init()
370 		reg &= ~SS_PORT_MAP_PORT_INTERNAL(port->idx);  in usb3_port_init()
372 		reg |= SS_PORT_MAP_PORT_INTERNAL(port->idx);  in usb3_port_init()
373 	reg &= ~SS_PORT_MAP_PORT_MAP(port->idx, ~0);  in usb3_port_init()
374 	reg |= SS_PORT_MAP_PORT_MAP(port->idx, port->companion);  in usb3_port_init()
377 	reg = RD4(sc, XUSB_PADCTL_IOPHY_USB3_PAD_CTL2(port->idx));  in usb3_port_init()
384 	WR4(sc, XUSB_PADCTL_IOPHY_USB3_PAD_CTL2(port->idx), reg);  in usb3_port_init()
386 	WR4(sc, XUSB_PADCTL_IOPHY_USB3_PAD_CTL4(port->idx),  in usb3_port_init()
390 	reg &= ~ELPG_PROGRAM_SSP_ELPG_VCORE_DOWN(port->idx);  in usb3_port_init()
395 	reg &= ~ELPG_PROGRAM_SSP_ELPG_CLAMP_EN_EARLY(port->idx);  in usb3_port_init()
400 	reg &= ~ELPG_PROGRAM_SSP_ELPG_CLAMP_EN(port->idx);  in usb3_port_init()
407 static int
411 	int i;  in pcie_powerup()
430 	for (i = 100; i > 0; i--) {  in pcie_powerup()
437 		device_printf(sc->dev, "Failed to power up PCIe phy\n");  in pcie_powerup()
441 	reg |= USB3_PAD_MUX_PCIE_IDDQ_DISABLE(lane->idx);  in pcie_powerup()
447 static int
453 	reg &= ~USB3_PAD_MUX_PCIE_IDDQ_DISABLE(lane->idx);  in pcie_powerdown()
465 static int
469 	int i;  in sata_powerup()
489 	for (i = 100; i >= 0; i--) {  in sata_powerup()
496 		device_printf(sc->dev, "Failed to power up SATA phy\n");  in sata_powerup()
510 static int
544 static int
548 	struct padctl_port *port;  in usb2_powerup()  local
549 	int rv;  in usb2_powerup()
551 	port = search_lane_port(sc, lane);  in usb2_powerup()
552 	if (port == NULL) {  in usb2_powerup()
553 		device_printf(sc->dev, "Cannot find port for lane: %s\n",  in usb2_powerup()
554 		    lane->name);  in usb2_powerup()
559 	reg |= USB2_BIAS_PAD_CTL0_HS_SQUELCH_LEVEL(sc->hs_squelch_level);  in usb2_powerup()
564 	reg &= ~USB2_PORT_CAP_PORT_CAP(lane->idx, ~0);  in usb2_powerup()
565 	reg |= USB2_PORT_CAP_PORT_CAP(lane->idx, USB2_PORT_CAP_PORT_CAP_HOST);  in usb2_powerup()
568 	reg = RD4(sc, XUSB_PADCTL_USB2_OTG_PAD_CTL0(lane->idx));  in usb2_powerup()
577 	if (lane->idx == 0) {  in usb2_powerup()
578 		reg |= USB2_OTG_PAD_CTL0_HS_CURR_LEVEL(sc->hs_curr_level_0);  in usb2_powerup()
581 		reg |= USB2_OTG_PAD_CTL0_HS_CURR_LEVEL(sc->hs_curr_level_123);  in usb2_powerup()
584 	WR4(sc, XUSB_PADCTL_USB2_OTG_PAD_CTL0(lane->idx), reg);  in usb2_powerup()
586 	reg = RD4(sc, XUSB_PADCTL_USB2_OTG_PAD_CTL1(lane->idx));  in usb2_powerup()
593 	reg |= USB2_OTG_PAD_CTL1_TERM_RANGE_ADJ(sc->hs_term_range_adj);  in usb2_powerup()
594 	reg |= USB2_OTG_PAD_CTL1_HS_IREF_CAP(sc->hs_iref_cap);  in usb2_powerup()
595 	WR4(sc, XUSB_PADCTL_USB2_OTG_PAD_CTL1(lane->idx), reg);  in usb2_powerup()
597 	if (port != NULL && port->supply_vbus != NULL) {  in usb2_powerup()
598 		rv = regulator_enable(port->supply_vbus);  in usb2_powerup()
600 			device_printf(sc->dev,  in usb2_powerup()
612 static int
616 	struct padctl_port *port;  in usb2_powerdown()  local
617 	int rv;  in usb2_powerdown()
619 	port = search_lane_port(sc, lane);  in usb2_powerdown()
620 	if (port == NULL) {  in usb2_powerdown()
621 		device_printf(sc->dev, "Cannot find port for lane: %s\n",  in usb2_powerdown()
622 		    lane->name);  in usb2_powerdown()
628 	if (port != NULL && port->supply_vbus != NULL) {  in usb2_powerdown()
629 		rv = regulator_enable(port->supply_vbus);  in usb2_powerdown()
631 			device_printf(sc->dev,  in usb2_powerdown()
639 static int
662 static int
685 static int
693 	int rv;  in xusbpadctl_phy_enable()
704 	if (!lane->enabled) {  in xusbpadctl_phy_enable()
706 		    lane->name);  in xusbpadctl_phy_enable()
709 	pad = lane->pad;  in xusbpadctl_phy_enable()
711 		if (sc->phy_ena_cnt == 0) {  in xusbpadctl_phy_enable()
716 		sc->phy_ena_cnt++;  in xusbpadctl_phy_enable()
720 		rv = pad->powerup(sc, lane);  in xusbpadctl_phy_enable()
722 		rv = pad->powerdown(sc, lane);  in xusbpadctl_phy_enable()
727 		 if (sc->phy_ena_cnt == 1) {  in xusbpadctl_phy_enable()
732 		sc->phy_ena_cnt--;  in xusbpadctl_phy_enable()
738 /* -------------------------------------------------------------------------
745 	int i;  in search_port()
757 	int i;  in search_lane_port()
771 	int i;  in search_lane()
781 search_pad_lane(struct padctl_softc *sc, enum padctl_pad_type type, int idx)  in search_pad_lane()
783 	int i;  in search_pad_lane()
788 		if (type == lanes_tbl[i].pad->type && idx == lanes_tbl[i].idx)  in search_pad_lane()
795 search_usb3_pad_lane(struct padctl_softc *sc, int idx)  in search_usb3_pad_lane()
797 	int i;  in search_usb3_pad_lane()
808 		if (strcmp(tmp->mux[tmp->mux_idx], "usb3-ss") != 0)  in search_usb3_pad_lane()
811 			device_printf(sc->dev, "Duplicated mappings found for"  in search_usb3_pad_lane()
812 			 " lanes: %s and %s\n", lane->name, tmp->name);  in search_usb3_pad_lane()
823 	int i;  in search_pad()
832 static int
835 	int i;  in search_mux()
837 	for (i = 0; i < lane->nmux; i++) {  in search_mux()
838 		if (strcmp(fnc_name, lane->mux[i]) == 0)  in search_mux()
841 	return (-1);  in search_mux()
844 static int
849 	reg = RD4(sc, lane->reg);  in config_lane()
850 	reg &= ~(lane->mask << lane->shift);  in config_lane()
851 	reg |=  (lane->mux_idx & lane->mask) << lane->shift;  in config_lane()
852 	WR4(sc, lane->reg, reg);  in config_lane()
856 static int
864 	int rv;  in process_lane()
870 		device_printf(sc->dev, "Cannot read lane name.\n");  in process_lane()
876 		device_printf(sc->dev, "Unknown lane: %s\n", name);  in process_lane()
881 	/* Read function (mux) settings. */  in process_lane()
884 		device_printf(sc->dev, "Cannot read lane function.\n");  in process_lane()
889 	lane->mux_idx = search_mux(sc, lane, function);  in process_lane()
890 	if (lane->mux_idx == ~0) {  in process_lane()
891 		device_printf(sc->dev, "Unknown function %s for lane %s\n",  in process_lane()
899 		device_printf(sc->dev, "Cannot configure lane: %s: %d\n",  in process_lane()
904 	lane->pad = pad;  in process_lane()
905 	lane->enabled = true;  in process_lane()
906 	pad->lanes[pad->nlanes++] = lane;  in process_lane()
910 	phy_init.id = lane - lanes_tbl;  in process_lane()
912 	phynode = phynode_create(sc->dev, &xusbpadctl_phynode_class, &phy_init);  in process_lane()
914 		device_printf(sc->dev, "Cannot create phy\n");  in process_lane()
919 		device_printf(sc->dev, "Cannot create phy\n");  in process_lane()
933 static int
938 	int rv;  in process_pad()
943 		device_printf(sc->dev, "Cannot read pad name.\n");  in process_pad()
948 		device_printf(sc->dev, "Unknown pad: %s\n", name);  in process_pad()
956 		device_printf(sc->dev, "Cannot find regulators subnode\n");  in process_pad()
969 	pad->enabled = true;  in process_pad()
977 static int
981 	struct padctl_port *port;  in process_port()  local
983 	int rv;  in process_port()
988 		device_printf(sc->dev, "Cannot read port name.\n");  in process_port()
992 	port = search_port(sc, name);  in process_port()
993 	if (port == NULL) {  in process_port()
994 		device_printf(sc->dev, "Unknown port: %s\n", name);  in process_port()
999 	if (port->type == PADCTL_PORT_USB3) {  in process_port()
1000 		rv = OF_getencprop(node,  "nvidia,usb2-companion",  in process_port()
1001 		   &(port->companion), sizeof(port->companion));  in process_port()
1003 			device_printf(sc->dev,  in process_port()
1004 			    "Missing 'nvidia,usb2-companion' property "  in process_port()
1005 			    "for port: %s\n", name);  in process_port()
1011 	if (OF_hasprop(node, "vbus-supply")) {  in process_port()
1012 		rv = regulator_get_by_ofw_property(sc->dev, 0,  in process_port()
1013 		    "vbus-supply", &port->supply_vbus);  in process_port()
1015 			device_printf(sc->dev,  in process_port()
1016 			    "Cannot get 'vbus-supply' regulator "  in process_port()
1017 			    "for port: %s\n", name);  in process_port()
1024 		port->internal = true;  in process_port()
1026 	if (port->lane == NULL) {  in process_port()
1027 		switch(port->type) {  in process_port()
1030 			port->lane = search_pad_lane(sc, PADCTL_PAD_USB2,  in process_port()
1031 			    port->idx);  in process_port()
1034 			port->lane = search_pad_lane(sc, PADCTL_PAD_ULPI,  in process_port()
1035 			    port->idx);  in process_port()
1038 			port->lane = search_pad_lane(sc, PADCTL_PAD_HSIC,  in process_port()
1039 			    port->idx);  in process_port()
1042 			port->lane = search_usb3_pad_lane(sc, port->idx);  in process_port()
1046 	if (port->lane == NULL) {  in process_port()
1047 		device_printf(sc->dev, "Cannot find lane for port: %s\n", name);  in process_port()
1051 	port->enabled = true;  in process_port()
1059 static int
1063 	int rv;  in parse_fdt()
1069 		device_printf(sc->dev, "Cannot find pads subnode.\n");  in parse_fdt()
1082 		device_printf(sc->dev, "Cannot find ports subnode.\n");  in parse_fdt()
1103 	sc->hs_curr_level_0 = FUSE_XUSB_CALIB_HS_CURR_LEVEL_0(reg);  in load_calibration()
1104 	sc->hs_curr_level_123 = FUSE_XUSB_CALIB_HS_CURR_LEVEL_123(reg);  in load_calibration()
1105 	sc->hs_iref_cap = FUSE_XUSB_CALIB_HS_IREF_CAP(reg);  in load_calibration()
1106 	sc->hs_squelch_level = FUSE_XUSB_CALIB_HS_SQUELCH_LEVEL(reg);  in load_calibration()
1107 	sc->hs_term_range_adj = FUSE_XUSB_CALIB_HS_TERM_RANGE_ADJ(reg);  in load_calibration()
1110 /* -------------------------------------------------------------------------
1114 static int
1121 	if (!ofw_bus_search_compatible(dev, compat_data)->ocd_data)  in xusbpadctl_probe()
1128 static int
1136 static int
1140 	int i, rid, rv;  in xusbpadctl_attach()
1141 	struct padctl_port *port;  in xusbpadctl_attach()  local
1145 	sc->dev = dev;  in xusbpadctl_attach()
1149 	sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,  in xusbpadctl_attach()
1151 	if (sc->mem_res == NULL) {  in xusbpadctl_attach()
1156 	rv = hwreset_get_by_ofw_name(dev, 0, "padctl", &sc->rst);  in xusbpadctl_attach()
1161 	rv = hwreset_deassert(sc->rst);  in xusbpadctl_attach()
1175 		port = ports_tbl + i;  in xusbpadctl_attach()
1176 		if (!port->enabled)  in xusbpadctl_attach()
1178 		if (port->init == NULL)  in xusbpadctl_attach()
1180 		rv = port->init(sc, port);  in xusbpadctl_attach()
1182 			device_printf(dev, "Cannot init port '%s'\n",  in xusbpadctl_attach()
1183 			    port->name);  in xusbpadctl_attach()