#ifndef MK20DX256_REG_USBOTG_H
#define MK20DX256_REG_USBOTG_H

#include "regdefs.h"

// Peripheral ID register
#define USB0_PERID REG_8(0x40072000)
#define PERID_ID 0 // Peripheral Identification
#define PERID_ID_M REG_8_M(PERID_ID, 6)

// Peripheral ID Complement register
#define USB0_IDCOMP REG_8(0x40072004)
#define IDCOMP_NID 0 // Ones complement of peripheral identification bits.
#define IDCOMP_NID_M REG_8_M(IDCOMP_NID, 6)

// Peripheral Revision register
#define USB0_REV REG_8(0x40072008)
#define REV_REV 0 // Revision
#define REV_REV_M REG_8_M(REV_REV, 8)

// Peripheral Additional Info register
#define USB0_ADDINFO REG_8(0x4007200C)
#define ADDINFO_IRQNUM 3 // Assigned Interrupt Request Number.
#define ADDINFO_IRQNUM_M REG_8_M(ADDINFO_IRQNUM, 5)
#define ADDINFO_IEHOST 0 // Set if SIE is in host mode.

// OTG Interrupt Status register
#define USB0_OTGISTAT REG_8(0x40072010)
#define OTGISTAT_IDCHG 7 // Set on change in the ID Signal from the USB connector.
#define OTGISTAT_ONEMSEC 6 // Set on 1 ms timer expire.
#define OTGISTAT_LINE_STATE_CHG 5 // Set when USB line state changes.
#define OTGISTAT_SESSVLDCHG 3
#define OTGISTAT_B_SESS_CHG 2
#define OTGISTAT_AVBUSCHG 0

// OTG Interrupt Control Register
#define USB0_OTGICR REG_8(0x40072014)
#define OTGICR_IDEN 7 // ID Interrupt Enable
#define OTGICR_ONEMSECEN 6 // One Millisecond Interrupt Enable
#define OTGICR_LINESTATEEN 5 // Line State Change Interrupt Enable
#define OTGICR_SESSVLDEN 3 // Session Valid Interrupt Enable
#define OTGICR_BSESSEN 2 // B Session END Interrupt Enable
#define OTGICR_AVBUSEN 0 // A VBUS Valid Interrupt Enable

// OTG Status register
#define USB0_OTGSTAT REG_8(0x40072018)
#define OTGSTAT_ID 7
#define OTGSTAT_ONEMSECEN 6
#define OTGSTAT_LINESTATESTABLE 5
#define OTGSTAT_SESS_VLD 3
#define OTGSTAT_BSESSEND 2
#define OTGSTAT_AVBUSVLD 0

// OTG Control register
#define USB0_OTGCTL REG_8(0x4007201C)
#define OTGCTL_DPHIGH 7 // D+ Data Line pullup resistor enable
#define OTGCTL_DPLOW 5 // D+ Data Line pull-down resistor enable
#define OTGCTL_DMLOW 4 // D– Data Line pull-down resistor enable
#define OTGCTL_OTGEN 2 // On-The-Go pullup/pulldown resistor enable

// Interrupt Status register
#define USB0_ISTAT REG_8(0x40072080)
#define ISTAT_STALL 7 // Stall Interrupt
#define ISTAT_ATTACH 6 // Attach Interrupt
#define ISTAT_RESUME 5
#define ISTAT_SLEEP 4
#define ISTAT_TOKDNE 3
#define ISTAT_SOFTOK 2
#define ISTAT_ERROR 1
#define ISTAT_USBRST 0

// Interrupt Enable register
#define USB0_INTEN REG_8(0x40072084)
#define INTEN_STALLEN 7 // STALL Interrupt Enable
#define INTEN_ATTACHEN 6 // ATTACH Interrupt Enable
#define INTEN_RESUMEEN 5 // RESUME Interrupt Enable
#define INTEN_SLEEPEN 4 // SLEEP Interrupt Enable
#define INTEN_TOKDNEEN 3 // TOKDNE Interrupt Enable
#define INTEN_SOFTOKEN 2 // SOFTOK Interrupt Enable
#define INTEN_ERROREN 1 // ERROR Interrupt Enable
#define INTEN_USBRSTEN 0 // USBRST Interrupt Enable

// Error Interrupt Status register
#define USB0_ERRSTAT REG_8(0x40072088)
#define ERRSTAT_BTSERR 7
#define ERRSTAT_DMAERR 5
#define ERRSTAT_BTOERR 4
#define ERRSTAT_DFN8 3
#define ERRSTAT_CRC16 2
#define ERRSTAT_CRC5EOF 1
#define ERRSTAT_PIDERR 0

// Error Interrupt Enable register
#define USB0_ERREN REG_8(0x4007208C)
#define ERREN_BTSERREN 7 // BTSERR Interrupt Enable
#define ERREN_DMAERREN 5 // DMAERR Interrupt Enable
#define ERREN_BTOERREN 4 // BTOERR Interrupt Enable
#define ERREN_DFN8EN 3 // DFN8 Interrupt Enable
#define ERREN_CRC16EN 2 // CRC16 Interrupt Enable
#define ERREN_CRC5EOFEN 1 // CRC5EOF Interrupt Enable
#define ERREN_PIDERREN 0 // PIDERR Interrupt Enable

// Status register
#define USB0_STAT REG_8(0x40072090)
#define STAT_ENDP 4
#define STAT_ENDP_M REG_8_M(STAT_ENDP, 4)
#define STAT_TX 3 // Transmit Indicator
#define STAT_ODD 2

// Control register
#define USB0_CTL REG_8(0x40072094)
#define CTL_JSTATE 7 // Live USB differential receiver JSTATE signal
#define CTL_SE0 6 // Live USB Single Ended Zero signal
#define CTL_TXSUSPENDTOKENBUSY 5 
#define CTL_RESET 4
#define CTL_HOSTMODEEN 3
#define CTL_RESUME 2
#define CTL_ODDRST 1
#define CTL_USBENSOFEN 0 // USB Enable

// Address register
#define USB0_ADDR REG_8(0x40072098)
#define ADDR_LSEN 7
#define ADDR_ADDR 0
#define ADDR_ADDR_M REG_8_M(ADDR_ADDR, 7)

// BDT Page Register 1
#define USB0_BDTPAGE1 REG_8(0x4007209C)
#define BDTPAGE1_BDTBA 1
#define BDTPAGE1_BDTBA_M REG_8_M(BDTPAGE1_BDTBA, 7)

// Frame Number Register Low
#define USB0_FRMNUML REG_8(0x400720A0)
#define FRMNUML_FRM 0
#define FRMNUML_FRM_M REG_8_M(FRMNUML_FRM, 8)

// Frame Number Register High
#define USB0_FRMNUMH REG_8(0x400720A4)
#define FRMNUMH_FRM 0
#define FRMNUMH_FRM_M REG_8_M(FRMNUMH_FRM_M, 3)

// Token register
#define USB0_TOKEN REG_8(0x400720A8)
#define TOKEN_TOKENPID 4
#define TOKEN_TOKENPID_M REG_8_M(TOKEN_TOKENPID, 4)
#define TOKEN_TOKENENDPT 0
#define TOKEN_TOKENENDPT_M REG_8_M(TOKEN_TOKENENDPT, 4)

// SOF Threshold Register
#define USB0_SOFTHLD REG_8(0x400720AC)
#define SOFTHLD_CNT 0
#define SOFTHLD_CNT_M REG_8_M(SOFTHLD_CNT, 8)

// BDT Page Register 2
#define USB0_BDTPAGE2 REG_8(0x400720B0)
#define BDTPAGE2_BDTBA 0
#define BDTPAGE2_BDTBA_M REG_8_M(BDTPAGE2_BDTBA, 8)

// BDT Page Register 3
#define USB0_BDTPAGE3 REG_8(0x400720B4)
#define BDTPAGE3_BDTBA 0
#define BDTPAGE3_BDTBA_M REG_8_M(BDTPAGE3_BDTBA, 8)

// Endpoint Control register
#define USB0_ENDPT(n) REG_8(0x400720C0 + 4 * (n))
#define ENDPT_HOSTWOHUB 7
#define ENDPT_RETRYDIS 6
#define ENDPT_EPCTLDIS 4
#define ENDPT_EPRXEN 3
#define ENDPT_EPTXEN 2
#define ENDPT_EPSTALL 1
#define ENDPT_EPHSHK 0

// USB Control register
#define USB0_USBCTRL REG_8(0x40072100)
#define USBCTRL_SUSP 7 // Places the USB transceiver into the suspend state.
#define USBCTRL_PDE 6 // Enables the weak pulldowns on the USB transceiver.

// USB OTG Observe register
#define USB0_OBSERVE REG_8(0x40072104)
#define OBSERVE_DPPU 7 // Provides observability of the D+ Pullup
#define OBSERVE_DPPD 6 // Provides observability of the D+ Pulldown
#define OBSERVE_DMPD 4 // Provides observability of the D- Pulldown

// USB OTG Control register
#define USB0_CONTROL REG_8(0x40072108)
#define CONTROL_DPPULLUPNONOTG 4 // DP Pullup in non-OTG device mode state

// USB Transceiver Control Register 0
#define USB0_USBTRC0 REG_8(0x4007210C)
#define USBTRC0_USBRESET 7 // USB Reset
#define USBTRC0_USBRESMEN 5 // Asynchronous Resume Interrupt Enable
#define USBTRC0_SYNC_DET 1 // Synchronous USB Interrupt Detect
#define USBTRC0_USB_RESUME_INT 0 // USB Asynchronous Interrupt

// Frame Adjust Register
#define USB0_USBFRMADJUST REG_8(0x40072114)
#define USBFRMADJUST_ADJ 0
#define USBFRMADJUST_ADJ_M REG_8_M(USBFRMADJUST_ADJ, 8)

// TODO: Move elsewhere
__attribute__ ((packed))
struct usb0_bd {
	uint32_t desc;
	void *addr;
};
//#define USB0_BD(desc, addr) (struct usb0_bd){(desc), (addr)}
#define USB0_BD_INIT(size, data01) ((size) << BD_BC | BV(BD_OWN) | \
				    ((data01) & 1) << BD_DATA01 | BV(BD_DTS))
#define BD_BC 16 // Byte Count
#define BD_BC_M REG_32_M(BD_BC, 10)
#define BD_OWN 7
#define BD_DATA01 6
#define BD_KEEP 5
#define BD_NINC 4
#define BD_DTS 3
#define BD_BDT_STALL 2
#define BD_TOK_PID 2
#define BD_TOK_PID_M REG_32_M(BD_TOK_PID, 4)

#define BD_TOK_PID_OUT 0x1
#define BD_TOK_PID_IN 0x9
#define BD_TOK_PID_SETUP 0xd

#define BD_TOK_PID_DATA0 0x3
#define BD_TOK_PID_DATA1 0xb
#define BD_TOK_PID_ACK 0x2
#define BD_TOK_PID_STALL 0xe
#define BD_TOK_PID_NAK 0xa
#define BD_TOK_PID_TIMEOUT 0x0
#define BD_TOK_PID_ERROR 0xf

#endif /* MK20DX256_REG_USBOTG_H */