17733f6c3SPawel Laszczak /* SPDX-License-Identifier: GPL-2.0 */ 27733f6c3SPawel Laszczak /* 37733f6c3SPawel Laszczak * Cadence USB3 DRD header file. 47733f6c3SPawel Laszczak * 57733f6c3SPawel Laszczak * Copyright (C) 2018-2019 Cadence. 67733f6c3SPawel Laszczak * 77733f6c3SPawel Laszczak * Author: Pawel Laszczak <pawell@cadence.com> 87733f6c3SPawel Laszczak */ 97733f6c3SPawel Laszczak #ifndef __LINUX_CDNS3_DRD 107733f6c3SPawel Laszczak #define __LINUX_CDNS3_DRD 117733f6c3SPawel Laszczak 127733f6c3SPawel Laszczak #include <linux/usb/otg.h> 137733f6c3SPawel Laszczak #include <linux/phy/phy.h> 147733f6c3SPawel Laszczak #include "core.h" 157733f6c3SPawel Laszczak 167733f6c3SPawel Laszczak /* DRD register interface for version v1. */ 177733f6c3SPawel Laszczak struct cdns3_otg_regs { 187733f6c3SPawel Laszczak __le32 did; 197733f6c3SPawel Laszczak __le32 rid; 207733f6c3SPawel Laszczak __le32 capabilities; 217733f6c3SPawel Laszczak __le32 reserved1; 227733f6c3SPawel Laszczak __le32 cmd; 237733f6c3SPawel Laszczak __le32 sts; 247733f6c3SPawel Laszczak __le32 state; 257733f6c3SPawel Laszczak __le32 reserved2; 267733f6c3SPawel Laszczak __le32 ien; 277733f6c3SPawel Laszczak __le32 ivect; 287733f6c3SPawel Laszczak __le32 refclk; 297733f6c3SPawel Laszczak __le32 tmr; 307733f6c3SPawel Laszczak __le32 reserved3[4]; 317733f6c3SPawel Laszczak __le32 simulate; 327733f6c3SPawel Laszczak __le32 override; 337733f6c3SPawel Laszczak __le32 susp_ctrl; 347733f6c3SPawel Laszczak __le32 reserved4; 357733f6c3SPawel Laszczak __le32 anasts; 367733f6c3SPawel Laszczak __le32 adp_ramp_time; 377733f6c3SPawel Laszczak __le32 ctrl1; 387733f6c3SPawel Laszczak __le32 ctrl2; 397733f6c3SPawel Laszczak }; 407733f6c3SPawel Laszczak 417733f6c3SPawel Laszczak /* DRD register interface for version v0. */ 427733f6c3SPawel Laszczak struct cdns3_otg_legacy_regs { 437733f6c3SPawel Laszczak __le32 cmd; 447733f6c3SPawel Laszczak __le32 sts; 457733f6c3SPawel Laszczak __le32 state; 467733f6c3SPawel Laszczak __le32 refclk; 477733f6c3SPawel Laszczak __le32 ien; 487733f6c3SPawel Laszczak __le32 ivect; 497733f6c3SPawel Laszczak __le32 reserved1[3]; 507733f6c3SPawel Laszczak __le32 tmr; 517733f6c3SPawel Laszczak __le32 reserved2[2]; 527733f6c3SPawel Laszczak __le32 version; 537733f6c3SPawel Laszczak __le32 capabilities; 547733f6c3SPawel Laszczak __le32 reserved3[2]; 557733f6c3SPawel Laszczak __le32 simulate; 567733f6c3SPawel Laszczak __le32 reserved4[5]; 577733f6c3SPawel Laszczak __le32 ctrl1; 587733f6c3SPawel Laszczak }; 597733f6c3SPawel Laszczak 607733f6c3SPawel Laszczak /* 617733f6c3SPawel Laszczak * Common registers interface for both version of DRD. 627733f6c3SPawel Laszczak */ 637733f6c3SPawel Laszczak struct cdns3_otg_common_regs { 647733f6c3SPawel Laszczak __le32 cmd; 657733f6c3SPawel Laszczak __le32 sts; 667733f6c3SPawel Laszczak __le32 state; 677733f6c3SPawel Laszczak __le32 different1; 687733f6c3SPawel Laszczak __le32 ien; 697733f6c3SPawel Laszczak __le32 ivect; 707733f6c3SPawel Laszczak }; 717733f6c3SPawel Laszczak 727733f6c3SPawel Laszczak /* CDNS_RID - bitmasks */ 737733f6c3SPawel Laszczak #define CDNS_RID(p) ((p) & GENMASK(15, 0)) 747733f6c3SPawel Laszczak 757733f6c3SPawel Laszczak /* CDNS_VID - bitmasks */ 767733f6c3SPawel Laszczak #define CDNS_DID(p) ((p) & GENMASK(31, 0)) 777733f6c3SPawel Laszczak 787733f6c3SPawel Laszczak /* OTGCMD - bitmasks */ 797733f6c3SPawel Laszczak /* "Request the bus for Device mode. */ 807733f6c3SPawel Laszczak #define OTGCMD_DEV_BUS_REQ BIT(0) 817733f6c3SPawel Laszczak /* Request the bus for Host mode */ 827733f6c3SPawel Laszczak #define OTGCMD_HOST_BUS_REQ BIT(1) 837733f6c3SPawel Laszczak /* Enable OTG mode. */ 847733f6c3SPawel Laszczak #define OTGCMD_OTG_EN BIT(2) 857733f6c3SPawel Laszczak /* Disable OTG mode */ 867733f6c3SPawel Laszczak #define OTGCMD_OTG_DIS BIT(3) 877733f6c3SPawel Laszczak /*"Configure OTG as A-Device. */ 887733f6c3SPawel Laszczak #define OTGCMD_A_DEV_EN BIT(4) 897733f6c3SPawel Laszczak /*"Configure OTG as A-Device. */ 907733f6c3SPawel Laszczak #define OTGCMD_A_DEV_DIS BIT(5) 917733f6c3SPawel Laszczak /* Drop the bus for Device mod e. */ 927733f6c3SPawel Laszczak #define OTGCMD_DEV_BUS_DROP BIT(8) 937733f6c3SPawel Laszczak /* Drop the bus for Host mode*/ 947733f6c3SPawel Laszczak #define OTGCMD_HOST_BUS_DROP BIT(9) 957733f6c3SPawel Laszczak /* Power Down USBSS-DEV. */ 967733f6c3SPawel Laszczak #define OTGCMD_DEV_POWER_OFF BIT(11) 977733f6c3SPawel Laszczak /* Power Down CDNSXHCI. */ 987733f6c3SPawel Laszczak #define OTGCMD_HOST_POWER_OFF BIT(12) 997733f6c3SPawel Laszczak 1007733f6c3SPawel Laszczak /* OTGIEN - bitmasks */ 1017733f6c3SPawel Laszczak /* ID change interrupt enable */ 1027733f6c3SPawel Laszczak #define OTGIEN_ID_CHANGE_INT BIT(0) 1037733f6c3SPawel Laszczak /* Vbusvalid fall detected interrupt enable.*/ 1047733f6c3SPawel Laszczak #define OTGIEN_VBUSVALID_RISE_INT BIT(4) 1057733f6c3SPawel Laszczak /* Vbusvalid fall detected interrupt enable */ 1067733f6c3SPawel Laszczak #define OTGIEN_VBUSVALID_FALL_INT BIT(5) 1077733f6c3SPawel Laszczak 1087733f6c3SPawel Laszczak /* OTGSTS - bitmasks */ 1097733f6c3SPawel Laszczak /* 1107733f6c3SPawel Laszczak * Current value of the ID pin. It is only valid when idpullup in 1117733f6c3SPawel Laszczak * OTGCTRL1_TYPE register is set to '1'. 1127733f6c3SPawel Laszczak */ 1137733f6c3SPawel Laszczak #define OTGSTS_ID_VALUE BIT(0) 1147733f6c3SPawel Laszczak /* Current value of the vbus_valid */ 1157733f6c3SPawel Laszczak #define OTGSTS_VBUS_VALID BIT(1) 1167733f6c3SPawel Laszczak /* Current value of the b_sess_vld */ 1177733f6c3SPawel Laszczak #define OTGSTS_SESSION_VALID BIT(2) 1187733f6c3SPawel Laszczak /*Device mode is active*/ 1197733f6c3SPawel Laszczak #define OTGSTS_DEV_ACTIVE BIT(3) 1207733f6c3SPawel Laszczak /* Host mode is active. */ 1217733f6c3SPawel Laszczak #define OTGSTS_HOST_ACTIVE BIT(4) 1227733f6c3SPawel Laszczak /* OTG Controller not ready. */ 1237733f6c3SPawel Laszczak #define OTGSTS_OTG_NRDY_MASK BIT(11) 1247733f6c3SPawel Laszczak #define OTGSTS_OTG_NRDY(p) ((p) & OTGSTS_OTG_NRDY_MASK) 1257733f6c3SPawel Laszczak /* 1267733f6c3SPawel Laszczak * Value of the strap pins. 1277733f6c3SPawel Laszczak * 000 - no default configuration 1287733f6c3SPawel Laszczak * 010 - Controller initiall configured as Host 1297733f6c3SPawel Laszczak * 100 - Controller initially configured as Device 1307733f6c3SPawel Laszczak */ 1317733f6c3SPawel Laszczak #define OTGSTS_STRAP(p) (((p) & GENMASK(14, 12)) >> 12) 1327733f6c3SPawel Laszczak #define OTGSTS_STRAP_NO_DEFAULT_CFG 0x00 1337733f6c3SPawel Laszczak #define OTGSTS_STRAP_HOST_OTG 0x01 1347733f6c3SPawel Laszczak #define OTGSTS_STRAP_HOST 0x02 1357733f6c3SPawel Laszczak #define OTGSTS_STRAP_GADGET 0x04 1367733f6c3SPawel Laszczak /* Host mode is turned on. */ 1377733f6c3SPawel Laszczak #define OTGSTS_XHCI_READY BIT(26) 1387733f6c3SPawel Laszczak /* "Device mode is turned on .*/ 1397733f6c3SPawel Laszczak #define OTGSTS_DEV_READY BIT(27) 1407733f6c3SPawel Laszczak 1417733f6c3SPawel Laszczak /* OTGSTATE- bitmasks */ 1427733f6c3SPawel Laszczak #define OTGSTATE_DEV_STATE_MASK GENMASK(2, 0) 1437733f6c3SPawel Laszczak #define OTGSTATE_HOST_STATE_MASK GENMASK(5, 3) 1447733f6c3SPawel Laszczak #define OTGSTATE_HOST_STATE_IDLE 0x0 1457733f6c3SPawel Laszczak #define OTGSTATE_HOST_STATE_VBUS_FALL 0x7 1467733f6c3SPawel Laszczak #define OTGSTATE_HOST_STATE(p) (((p) & OTGSTATE_HOST_STATE_MASK) >> 3) 1477733f6c3SPawel Laszczak 1487733f6c3SPawel Laszczak /* OTGREFCLK - bitmasks */ 1497733f6c3SPawel Laszczak #define OTGREFCLK_STB_CLK_SWITCH_EN BIT(31) 1507733f6c3SPawel Laszczak 1517733f6c3SPawel Laszczak /* OVERRIDE - bitmasks */ 1527733f6c3SPawel Laszczak #define OVERRIDE_IDPULLUP BIT(0) 1537733f6c3SPawel Laszczak /* Only for CDNS3_CONTROLLER_V0 version */ 1547733f6c3SPawel Laszczak #define OVERRIDE_IDPULLUP_V0 BIT(24) 1557733f6c3SPawel Laszczak 1567733f6c3SPawel Laszczak int cdns3_is_host(struct cdns3 *cdns); 1577733f6c3SPawel Laszczak int cdns3_is_device(struct cdns3 *cdns); 1587733f6c3SPawel Laszczak int cdns3_get_id(struct cdns3 *cdns); 1597733f6c3SPawel Laszczak int cdns3_get_vbus(struct cdns3 *cdns); 1607733f6c3SPawel Laszczak int cdns3_drd_init(struct cdns3 *cdns); 1617733f6c3SPawel Laszczak int cdns3_drd_exit(struct cdns3 *cdns); 1627733f6c3SPawel Laszczak int cdns3_drd_update_mode(struct cdns3 *cdns); 1637733f6c3SPawel Laszczak int cdns3_drd_switch_gadget(struct cdns3 *cdns, int on); 1647733f6c3SPawel Laszczak int cdns3_drd_switch_host(struct cdns3 *cdns, int on); 1657733f6c3SPawel Laszczak int cdns3_set_mode(struct cdns3 *cdns, enum usb_dr_mode mode); 1667733f6c3SPawel Laszczak 1677733f6c3SPawel Laszczak #endif /* __LINUX_CDNS3_DRD */ 168