/* SPDX-License-Identifier: GPL-2.0 */ /* * Cadence USB3 and USBSSP DRD header file. * * Copyright (C) 2018-2020 Cadence. * * Author: Pawel Laszczak <[email protected]> */ #ifndef __LINUX_CDNS3_DRD #define __LINUX_CDNS3_DRD #include <linux/usb/otg.h> #include "core.h" /* DRD register interface for version v1 of cdns3 driver. */ struct cdns3_otg_regs { … }; /* DRD register interface for version v0 of cdns3 driver. */ struct cdns3_otg_legacy_regs { … }; /* DRD register interface for cdnsp driver */ struct cdnsp_otg_regs { … }; /* CDNSP driver supports 0x000403xx Cadence USB controller family. */ #define OTG_CDNSP_CHECK_DID(did) … /* CDNS3 driver supports 0x000402xx Cadence USB controller family. */ #define OTG_CDNS3_CHECK_DID(did) … /* * Common registers interface for both CDNS3 and CDNSP version of DRD. */ struct cdns_otg_common_regs { … }; /* * Interrupt related registers. This registers are mapped in different * location for CDNSP controller. */ struct cdns_otg_irq_regs { … }; /* CDNS_RID - bitmasks */ #define CDNS_RID(p) … /* CDNS_VID - bitmasks */ #define CDNS_DID(p) … /* OTGCMD - bitmasks */ /* "Request the bus for Device mode. */ #define OTGCMD_DEV_BUS_REQ … /* Request the bus for Host mode */ #define OTGCMD_HOST_BUS_REQ … /* Enable OTG mode. */ #define OTGCMD_OTG_EN … /* Disable OTG mode */ #define OTGCMD_OTG_DIS … /*"Configure OTG as A-Device. */ #define OTGCMD_A_DEV_EN … /*"Configure OTG as A-Device. */ #define OTGCMD_A_DEV_DIS … /* Drop the bus for Device mod e. */ #define OTGCMD_DEV_BUS_DROP … /* Drop the bus for Host mode*/ #define OTGCMD_HOST_BUS_DROP … /* Power Down USBSS-DEV - only for CDNS3.*/ #define OTGCMD_DEV_POWER_OFF … /* Power Down CDNSXHCI - only for CDNS3. */ #define OTGCMD_HOST_POWER_OFF … /* OTGIEN - bitmasks */ /* ID change interrupt enable */ #define OTGIEN_ID_CHANGE_INT … /* Vbusvalid fall detected interrupt enable.*/ #define OTGIEN_VBUSVALID_RISE_INT … /* Vbusvalid fall detected interrupt enable */ #define OTGIEN_VBUSVALID_FALL_INT … /* OTGSTS - bitmasks */ /* * Current value of the ID pin. It is only valid when idpullup in * OTGCTRL1_TYPE register is set to '1'. */ #define OTGSTS_ID_VALUE … /* Current value of the vbus_valid */ #define OTGSTS_VBUS_VALID … /* Current value of the b_sess_vld */ #define OTGSTS_SESSION_VALID … /*Device mode is active*/ #define OTGSTS_DEV_ACTIVE … /* Host mode is active. */ #define OTGSTS_HOST_ACTIVE … /* OTG Controller not ready. */ #define OTGSTS_OTG_NRDY_MASK … #define OTGSTS_OTG_NRDY(p) … /* * Value of the strap pins for: * CDNS3: * 000 - no default configuration * 010 - Controller initiall configured as Host * 100 - Controller initially configured as Device * CDNSP: * 000 - No default configuration. * 010 - Controller initiall configured as Host. * 100 - Controller initially configured as Device. */ #define OTGSTS_STRAP(p) … #define OTGSTS_STRAP_NO_DEFAULT_CFG … #define OTGSTS_STRAP_HOST_OTG … #define OTGSTS_STRAP_HOST … #define OTGSTS_STRAP_GADGET … #define OTGSTS_CDNSP_STRAP_HOST … #define OTGSTS_CDNSP_STRAP_GADGET … /* Host mode is turned on. */ #define OTGSTS_CDNS3_XHCI_READY … #define OTGSTS_CDNSP_XHCI_READY … /* "Device mode is turned on .*/ #define OTGSTS_CDNS3_DEV_READY … #define OTGSTS_CDNSP_DEV_READY … /* OTGSTATE- bitmasks */ #define OTGSTATE_DEV_STATE_MASK … #define OTGSTATE_HOST_STATE_MASK … #define OTGSTATE_HOST_STATE_IDLE … #define OTGSTATE_HOST_STATE_VBUS_FALL … #define OTGSTATE_HOST_STATE(p) … /* OTGREFCLK - bitmasks */ #define OTGREFCLK_STB_CLK_SWITCH_EN … /* SUPS_CTRL - bitmasks */ #define SUSP_CTRL_SUSPEND_RESIDENCY_ENABLE … /* OVERRIDE - bitmasks */ #define OVERRIDE_IDPULLUP … /* Only for CDNS3_CONTROLLER_V0 version */ #define OVERRIDE_IDPULLUP_V0 … /* Vbusvalid/Sesvalid override select. */ #define OVERRIDE_SESS_VLD_SEL … /* PHYRST_CFG - bitmasks */ #define PHYRST_CFG_PHYRST_A_ENABLE … #define CDNS3_ID_PERIPHERAL … #define CDNS3_ID_HOST … bool cdns_is_host(struct cdns *cdns); bool cdns_is_device(struct cdns *cdns); int cdns_get_id(struct cdns *cdns); int cdns_get_vbus(struct cdns *cdns); void cdns_clear_vbus(struct cdns *cdns); void cdns_set_vbus(struct cdns *cdns); int cdns_drd_init(struct cdns *cdns); int cdns_drd_exit(struct cdns *cdns); int cdns_drd_update_mode(struct cdns *cdns); int cdns_drd_gadget_on(struct cdns *cdns); void cdns_drd_gadget_off(struct cdns *cdns); int cdns_drd_host_on(struct cdns *cdns); void cdns_drd_host_off(struct cdns *cdns); bool cdns_power_is_lost(struct cdns *cdns); #endif /* __LINUX_CDNS3_DRD */
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