1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * PTP 1588 clock using the IXP46X 4 * 5 * Copyright (C) 2010 OMICRON electronics GmbH 6 */ 7 8 #ifndef _IXP46X_TS_H_ 9 #define _IXP46X_TS_H_ 10 11 #define DEFAULT_ADDEND 0xF0000029 12 #define TICKS_NS_SHIFT 4 13 14 struct ixp46x_channel_ctl { 15 u32 ch_control; /* 0x40 Time Synchronization Channel Control */ 16 u32 ch_event; /* 0x44 Time Synchronization Channel Event */ 17 u32 tx_snap_lo; /* 0x48 Transmit Snapshot Low Register */ 18 u32 tx_snap_hi; /* 0x4C Transmit Snapshot High Register */ 19 u32 rx_snap_lo; /* 0x50 Receive Snapshot Low Register */ 20 u32 rx_snap_hi; /* 0x54 Receive Snapshot High Register */ 21 u32 src_uuid_lo; /* 0x58 Source UUID0 Low Register */ 22 u32 src_uuid_hi; /* 0x5C Sequence Identifier/Source UUID0 High */ 23 }; 24 25 struct ixp46x_ts_regs { 26 u32 control; /* 0x00 Time Sync Control Register */ 27 u32 event; /* 0x04 Time Sync Event Register */ 28 u32 addend; /* 0x08 Time Sync Addend Register */ 29 u32 accum; /* 0x0C Time Sync Accumulator Register */ 30 u32 test; /* 0x10 Time Sync Test Register */ 31 u32 unused; /* 0x14 */ 32 u32 rsystime_lo; /* 0x18 RawSystemTime_Low Register */ 33 u32 rsystime_hi; /* 0x1C RawSystemTime_High Register */ 34 u32 systime_lo; /* 0x20 SystemTime_Low Register */ 35 u32 systime_hi; /* 0x24 SystemTime_High Register */ 36 u32 trgt_lo; /* 0x28 TargetTime_Low Register */ 37 u32 trgt_hi; /* 0x2C TargetTime_High Register */ 38 u32 asms_lo; /* 0x30 Auxiliary Slave Mode Snapshot Low */ 39 u32 asms_hi; /* 0x34 Auxiliary Slave Mode Snapshot High */ 40 u32 amms_lo; /* 0x38 Auxiliary Master Mode Snapshot Low */ 41 u32 amms_hi; /* 0x3C Auxiliary Master Mode Snapshot High */ 42 43 struct ixp46x_channel_ctl channel[3]; 44 }; 45 46 /* 0x00 Time Sync Control Register Bits */ 47 #define TSCR_AMM (1<<3) 48 #define TSCR_ASM (1<<2) 49 #define TSCR_TTM (1<<1) 50 #define TSCR_RST (1<<0) 51 52 /* 0x04 Time Sync Event Register Bits */ 53 #define TSER_SNM (1<<3) 54 #define TSER_SNS (1<<2) 55 #define TTIPEND (1<<1) 56 57 /* 0x40 Time Synchronization Channel Control Register Bits */ 58 #define MASTER_MODE (1<<0) 59 #define TIMESTAMP_ALL (1<<1) 60 61 /* 0x44 Time Synchronization Channel Event Register Bits */ 62 #define TX_SNAPSHOT_LOCKED (1<<0) 63 #define RX_SNAPSHOT_LOCKED (1<<1) 64 65 #if IS_ENABLED(CONFIG_PTP_1588_CLOCK_IXP46X) 66 int ixp46x_ptp_find(struct ixp46x_ts_regs *__iomem *regs, int *phc_index); 67 #else 68 static inline int ixp46x_ptp_find(struct ixp46x_ts_regs *__iomem *regs, int *phc_index) 69 { 70 *regs = NULL; 71 *phc_index = -1; 72 73 return -ENODEV; 74 } 75 #endif 76 77 #endif 78