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219 lines
5.5 KiB
219 lines
5.5 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* Cadence USB3 and USBSSP DRD header file. |
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* |
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* Copyright (C) 2018-2020 Cadence. |
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* |
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* Author: Pawel Laszczak <[email protected]> |
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*/ |
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#ifndef __LINUX_CDNS3_DRD |
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#define __LINUX_CDNS3_DRD |
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#include <linux/usb/otg.h> |
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#include "core.h" |
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/* DRD register interface for version v1 of cdns3 driver. */ |
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struct cdns3_otg_regs { |
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__le32 did; |
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__le32 rid; |
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__le32 capabilities; |
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__le32 reserved1; |
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__le32 cmd; |
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__le32 sts; |
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__le32 state; |
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__le32 reserved2; |
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__le32 ien; |
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__le32 ivect; |
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__le32 refclk; |
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__le32 tmr; |
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__le32 reserved3[4]; |
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__le32 simulate; |
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__le32 override; |
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__le32 susp_ctrl; |
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__le32 phyrst_cfg; |
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__le32 anasts; |
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__le32 adp_ramp_time; |
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__le32 ctrl1; |
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__le32 ctrl2; |
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}; |
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/* DRD register interface for version v0 of cdns3 driver. */ |
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struct cdns3_otg_legacy_regs { |
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__le32 cmd; |
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__le32 sts; |
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__le32 state; |
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__le32 refclk; |
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__le32 ien; |
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__le32 ivect; |
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__le32 reserved1[3]; |
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__le32 tmr; |
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__le32 reserved2[2]; |
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__le32 version; |
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__le32 capabilities; |
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__le32 reserved3[2]; |
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__le32 simulate; |
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__le32 reserved4[5]; |
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__le32 ctrl1; |
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}; |
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/* DRD register interface for cdnsp driver */ |
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struct cdnsp_otg_regs { |
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__le32 did; |
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__le32 rid; |
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__le32 cfgs1; |
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__le32 cfgs2; |
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__le32 cmd; |
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__le32 sts; |
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__le32 state; |
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__le32 ien; |
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__le32 ivect; |
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__le32 tmr; |
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__le32 simulate; |
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__le32 adpbc_sts; |
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__le32 adp_ramp_time; |
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__le32 adpbc_ctrl1; |
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__le32 adpbc_ctrl2; |
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__le32 override; |
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__le32 vbusvalid_dbnc_cfg; |
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__le32 sessvalid_dbnc_cfg; |
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__le32 susp_timing_ctrl; |
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}; |
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#define OTG_CDNSP_DID 0x0004034E |
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/* |
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* Common registers interface for both CDNS3 and CDNSP version of DRD. |
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*/ |
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struct cdns_otg_common_regs { |
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__le32 cmd; |
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__le32 sts; |
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__le32 state; |
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}; |
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/* |
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* Interrupt related registers. This registers are mapped in different |
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* location for CDNSP controller. |
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*/ |
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struct cdns_otg_irq_regs { |
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__le32 ien; |
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__le32 ivect; |
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}; |
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/* CDNS_RID - bitmasks */ |
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#define CDNS_RID(p) ((p) & GENMASK(15, 0)) |
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/* CDNS_VID - bitmasks */ |
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#define CDNS_DID(p) ((p) & GENMASK(31, 0)) |
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/* OTGCMD - bitmasks */ |
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/* "Request the bus for Device mode. */ |
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#define OTGCMD_DEV_BUS_REQ BIT(0) |
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/* Request the bus for Host mode */ |
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#define OTGCMD_HOST_BUS_REQ BIT(1) |
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/* Enable OTG mode. */ |
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#define OTGCMD_OTG_EN BIT(2) |
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/* Disable OTG mode */ |
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#define OTGCMD_OTG_DIS BIT(3) |
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/*"Configure OTG as A-Device. */ |
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#define OTGCMD_A_DEV_EN BIT(4) |
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/*"Configure OTG as A-Device. */ |
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#define OTGCMD_A_DEV_DIS BIT(5) |
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/* Drop the bus for Device mod e. */ |
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#define OTGCMD_DEV_BUS_DROP BIT(8) |
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/* Drop the bus for Host mode*/ |
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#define OTGCMD_HOST_BUS_DROP BIT(9) |
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/* Power Down USBSS-DEV - only for CDNS3.*/ |
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#define OTGCMD_DEV_POWER_OFF BIT(11) |
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/* Power Down CDNSXHCI - only for CDNS3. */ |
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#define OTGCMD_HOST_POWER_OFF BIT(12) |
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/* OTGIEN - bitmasks */ |
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/* ID change interrupt enable */ |
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#define OTGIEN_ID_CHANGE_INT BIT(0) |
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/* Vbusvalid fall detected interrupt enable.*/ |
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#define OTGIEN_VBUSVALID_RISE_INT BIT(4) |
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/* Vbusvalid fall detected interrupt enable */ |
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#define OTGIEN_VBUSVALID_FALL_INT BIT(5) |
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/* OTGSTS - bitmasks */ |
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/* |
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* Current value of the ID pin. It is only valid when idpullup in |
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* OTGCTRL1_TYPE register is set to '1'. |
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*/ |
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#define OTGSTS_ID_VALUE BIT(0) |
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/* Current value of the vbus_valid */ |
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#define OTGSTS_VBUS_VALID BIT(1) |
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/* Current value of the b_sess_vld */ |
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#define OTGSTS_SESSION_VALID BIT(2) |
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/*Device mode is active*/ |
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#define OTGSTS_DEV_ACTIVE BIT(3) |
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/* Host mode is active. */ |
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#define OTGSTS_HOST_ACTIVE BIT(4) |
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/* OTG Controller not ready. */ |
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#define OTGSTS_OTG_NRDY_MASK BIT(11) |
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#define OTGSTS_OTG_NRDY(p) ((p) & OTGSTS_OTG_NRDY_MASK) |
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/* |
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* Value of the strap pins for: |
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* CDNS3: |
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* 000 - no default configuration |
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* 010 - Controller initiall configured as Host |
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* 100 - Controller initially configured as Device |
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* CDNSP: |
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* 000 - No default configuration. |
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* 010 - Controller initiall configured as Host. |
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* 100 - Controller initially configured as Device. |
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*/ |
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#define OTGSTS_STRAP(p) (((p) & GENMASK(14, 12)) >> 12) |
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#define OTGSTS_STRAP_NO_DEFAULT_CFG 0x00 |
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#define OTGSTS_STRAP_HOST_OTG 0x01 |
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#define OTGSTS_STRAP_HOST 0x02 |
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#define OTGSTS_STRAP_GADGET 0x04 |
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#define OTGSTS_CDNSP_STRAP_HOST 0x01 |
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#define OTGSTS_CDNSP_STRAP_GADGET 0x02 |
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/* Host mode is turned on. */ |
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#define OTGSTS_CDNS3_XHCI_READY BIT(26) |
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#define OTGSTS_CDNSP_XHCI_READY BIT(27) |
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/* "Device mode is turned on .*/ |
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#define OTGSTS_CDNS3_DEV_READY BIT(27) |
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#define OTGSTS_CDNSP_DEV_READY BIT(26) |
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/* OTGSTATE- bitmasks */ |
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#define OTGSTATE_DEV_STATE_MASK GENMASK(2, 0) |
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#define OTGSTATE_HOST_STATE_MASK GENMASK(5, 3) |
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#define OTGSTATE_HOST_STATE_IDLE 0x0 |
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#define OTGSTATE_HOST_STATE_VBUS_FALL 0x7 |
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#define OTGSTATE_HOST_STATE(p) (((p) & OTGSTATE_HOST_STATE_MASK) >> 3) |
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/* OTGREFCLK - bitmasks */ |
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#define OTGREFCLK_STB_CLK_SWITCH_EN BIT(31) |
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/* OVERRIDE - bitmasks */ |
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#define OVERRIDE_IDPULLUP BIT(0) |
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/* Only for CDNS3_CONTROLLER_V0 version */ |
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#define OVERRIDE_IDPULLUP_V0 BIT(24) |
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/* Vbusvalid/Sesvalid override select. */ |
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#define OVERRIDE_SESS_VLD_SEL BIT(10) |
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/* PHYRST_CFG - bitmasks */ |
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#define PHYRST_CFG_PHYRST_A_ENABLE BIT(0) |
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#define CDNS3_ID_PERIPHERAL 1 |
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#define CDNS3_ID_HOST 0 |
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bool cdns_is_host(struct cdns *cdns); |
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bool cdns_is_device(struct cdns *cdns); |
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int cdns_get_id(struct cdns *cdns); |
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int cdns_get_vbus(struct cdns *cdns); |
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void cdns_clear_vbus(struct cdns *cdns); |
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void cdns_set_vbus(struct cdns *cdns); |
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int cdns_drd_init(struct cdns *cdns); |
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int cdns_drd_exit(struct cdns *cdns); |
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int cdns_drd_update_mode(struct cdns *cdns); |
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int cdns_drd_gadget_on(struct cdns *cdns); |
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void cdns_drd_gadget_off(struct cdns *cdns); |
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int cdns_drd_host_on(struct cdns *cdns); |
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void cdns_drd_host_off(struct cdns *cdns); |
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#endif /* __LINUX_CDNS3_DRD */
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