1 // SPDX-License-Identifier: GPL-2.0+
3  * Generic ULPI USB transceiver support
18 #include <linux/usb/ulpi.h>
33 /* ULPI hardcoded IDs, used for probing */
35 	ULPI_INFO(ULPI_ID(0x04cc, 0x1504), "NXP ISP1504"),
36 	ULPI_INFO(ULPI_ID(0x0424, 0x0006), "SMSC USB331x"),
37 	ULPI_INFO(ULPI_ID(0x0424, 0x0007), "SMSC USB3320"),
38 	ULPI_INFO(ULPI_ID(0x0424, 0x0009), "SMSC USB334x"),
39 	ULPI_INFO(ULPI_ID(0x0451, 0x1507), "TI TUSB1210"),
47 	if (phy->flags & ULPI_OTG_ID_PULLUP)  in ulpi_set_otg_flags()
51 	 * ULPI Specification rev.1.1 default  in ulpi_set_otg_flags()
54 	if (phy->flags & ULPI_OTG_DP_PULLDOWN_DIS)  in ulpi_set_otg_flags()
57 	if (phy->flags & ULPI_OTG_DM_PULLDOWN_DIS)  in ulpi_set_otg_flags()
60 	if (phy->flags & ULPI_OTG_EXTVBUSIND)  in ulpi_set_otg_flags()
68 	unsigned int flags = 0;  in ulpi_set_fc_flags()
71 	 * ULPI Specification rev.1.1 default  in ulpi_set_fc_flags()
74 	if (phy->flags & ULPI_FC_HS)  in ulpi_set_fc_flags()
76 	else if (phy->flags & ULPI_FC_LS)  in ulpi_set_fc_flags()
78 	else if (phy->flags & ULPI_FC_FS4LS)  in ulpi_set_fc_flags()
83 	if (phy->flags & ULPI_FC_TERMSEL)  in ulpi_set_fc_flags()
87 	 * ULPI Specification rev.1.1 default  in ulpi_set_fc_flags()
90 	if (phy->flags & ULPI_FC_OP_NODRV)  in ulpi_set_fc_flags()
92 	else if (phy->flags & ULPI_FC_OP_DIS_NRZI)  in ulpi_set_fc_flags()
94 	else if (phy->flags & ULPI_FC_OP_NSYNC_NEOP)  in ulpi_set_fc_flags()
100 	 * ULPI Specification rev.1.1 default  in ulpi_set_fc_flags()
110 	unsigned int flags = 0;  in ulpi_set_ic_flags()
112 	if (phy->flags & ULPI_IC_AUTORESUME)  in ulpi_set_ic_flags()
115 	if (phy->flags & ULPI_IC_EXTVBUS_INDINV)  in ulpi_set_ic_flags()
118 	if (phy->flags & ULPI_IC_IND_PASSTHRU)  in ulpi_set_ic_flags()
121 	if (phy->flags & ULPI_IC_PROTECT_DIS)  in ulpi_set_ic_flags()
145 	unsigned int val = 0x55;  in ulpi_check_integrity()
147 	for (i = 0; i < 2; i++) {  in ulpi_check_integrity()
149 		if (ret < 0)  in ulpi_check_integrity()
153 		if (ret < 0)  in ulpi_check_integrity()
157 			pr_err("ULPI integrity check: failed!");  in ulpi_check_integrity()
158 			return -ENODEV;  in ulpi_check_integrity()
163 	pr_info("ULPI integrity check: passed.\n");  in ulpi_check_integrity()
165 	return 0;  in ulpi_check_integrity()
171 	u32 ulpi_id = 0;  in ulpi_init()
173 	for (i = 0; i < 4; i++) {  in ulpi_init()
174 		ret = usb_phy_io_read(phy, ULPI_PRODUCT_ID_HIGH - i);  in ulpi_init()
175 		if (ret < 0)  in ulpi_init()
179 	vid = ulpi_id & 0xffff;  in ulpi_init()
182 	pr_info("ULPI transceiver vendor/product ID 0x%04x/0x%04x\n", vid, pid);  in ulpi_init()
184 	for (i = 0; i < ARRAY_SIZE(ulpi_ids); i++) {  in ulpi_init()
186 			pr_info("Found %s ULPI transceiver.\n",  in ulpi_init()
201 	struct usb_phy *phy = otg->usb_phy;  in ulpi_set_host()
205 		otg->host = NULL;  in ulpi_set_host()
206 		return 0;  in ulpi_set_host()
209 	otg->host = host;  in ulpi_set_host()
215 	if (phy->flags & ULPI_IC_6PIN_SERIAL)  in ulpi_set_host()
217 	else if (phy->flags & ULPI_IC_3PIN_SERIAL)  in ulpi_set_host()
219 	else if (phy->flags & ULPI_IC_CARKIT)  in ulpi_set_host()
227 	struct usb_phy *phy = otg->usb_phy;  in ulpi_set_vbus()
233 		if (phy->flags & ULPI_OTG_DRVVBUS)  in ulpi_set_vbus()
236 		if (phy->flags & ULPI_OTG_DRVVBUS_EXT)  in ulpi_set_vbus()
247 	phy->label	= "ULPI";  in otg_ulpi_init()
248 	phy->flags	= flags;  in otg_ulpi_init()
249 	phy->io_ops	= ops;  in otg_ulpi_init()
250 	phy->otg	= otg;  in otg_ulpi_init()
251 	phy->init	= ulpi_init;  in otg_ulpi_init()
253 	otg->usb_phy	= phy;  in otg_ulpi_init()
254 	otg->set_host	= ulpi_set_host;  in otg_ulpi_init()
255 	otg->set_vbus	= ulpi_set_vbus;  in otg_ulpi_init()