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ptp_qoriq.h
// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) 2010 OMICRON electronics GmbH * Copyright 2018 NXP */ #ifndef __PTP_QORIQ_H__ #define __PTP_QORIQ_H__ #include <linux/io.h> #include <linux/interrupt.h> #include <linux/ptp_clock_kernel.h> /* * qoriq ptp registers */ struct ctrl_regs { u32 tmr_ctrl; /* Timer control register */ u32 tmr_tevent; /* Timestamp event register */ u32 tmr_temask; /* Timer event mask register */ u32 tmr_pevent; /* Timestamp event register */ u32 tmr_pemask; /* Timer event mask register */ u32 tmr_stat; /* Timestamp status register */ u32 tmr_cnt_h; /* Timer counter high register */ u32 tmr_cnt_l; /* Timer counter low register */ u32 tmr_add; /* Timer drift compensation addend register */ u32 tmr_acc; /* Timer accumulator register */ u32 tmr_prsc; /* Timer prescale */ u8 res1[4]; u32 tmroff_h; /* Timer offset high */ u32 tmroff_l; /* Timer offset low */ }; struct alarm_regs { u32 tmr_alarm1_h; /* Timer alarm 1 high register */ u32 tmr_alarm1_l; /* Timer alarm 1 high register */ u32 tmr_alarm2_h; /* Timer alarm 2 high register */ u32 tmr_alarm2_l; /* Timer alarm 2 high register */ }; struct fiper_regs { u32 tmr_fiper1; /* Timer fixed period interval */ u32 tmr_fiper2; /* Timer fixed period interval */ u32 tmr_fiper3; /* Timer fixed period interval */ }; struct etts_regs { u32 tmr_etts1_h; /* Timestamp of general purpose external trigger */ u32 tmr_etts1_l; /* Timestamp of general purpose external trigger */ u32 tmr_etts2_h; /* Timestamp of general purpose external trigger */ u32 tmr_etts2_l; /* Timestamp of general purpose external trigger */ }; struct ptp_qoriq_registers { struct ctrl_regs __iomem *ctrl_regs; struct alarm_regs __iomem *alarm_regs; struct fiper_regs __iomem *fiper_regs; struct etts_regs __iomem *etts_regs; }; /* Offset definitions for the four register groups */ #define ETSEC_CTRL_REGS_OFFSET 0x0 #define ETSEC_ALARM_REGS_OFFSET 0x40 #define ETSEC_FIPER_REGS_OFFSET 0x80 #define ETSEC_ETTS_REGS_OFFSET 0xa0 #define CTRL_REGS_OFFSET 0x80 #define ALARM_REGS_OFFSET 0xb8 #define FIPER_REGS_OFFSET 0xd0 #define ETTS_REGS_OFFSET 0xe0 /* Bit definitions for the TMR_CTRL register */ #define ALM1P (1<<31) /* Alarm1 output polarity */ #define ALM2P (1<<30) /* Alarm2 output polarity */ #define FIPERST (1<<28) /* FIPER start indication */ #define PP1L (1<<27) /* Fiper1 pulse loopback mode enabled. */ #define PP2L (1<<26) /* Fiper2 pulse loopback mode enabled. */ #define TCLK_PERIOD_SHIFT (16) /* 1588 timer reference clock period. */ #define TCLK_PERIOD_MASK (0x3ff) #define RTPE (1<<15) /* Record Tx Timestamp to PAL Enable. */ #define FRD (1<<14) /* FIPER Realignment Disable */ #define ESFDP (1<<11) /* External Tx/Rx SFD Polarity. */ #define ESFDE (1<<10) /* External Tx/Rx SFD Enable. */ #define ETEP2 (1<<9) /* External trigger 2 edge polarity */ #define ETEP1 (1<<8) /* External trigger 1 edge polarity */ #define COPH (1<<7) /* Generated clock output phase. */ #define CIPH (1<<6) /* External oscillator input clock phase */ #define TMSR (1<<5) /* Timer soft reset. */ #define BYP (1<<3) /* Bypass drift compensated clock */ #define TE (1<<2) /* 1588 timer enable. */ #define CKSEL_SHIFT (0) /* 1588 Timer reference clock source */ #define CKSEL_MASK (0x3) /* Bit definitions for the TMR_TEVENT register */ #define ETS2 (1<<25) /* External trigger 2 timestamp sampled */ #define ETS1 (1<<24) /* External trigger 1 timestamp sampled */ #define ALM2 (1<<17) /* Current time = alarm time register 2 */ #define ALM1 (1<<16) /* Current time = alarm time register 1 */ #define PP1 (1<<7) /* periodic pulse generated on FIPER1 */ #define PP2 (1<<6) /* periodic pulse generated on FIPER2 */ #define PP3 (1<<5) /* periodic pulse generated on FIPER3 */ /* Bit definitions for the TMR_TEMASK register */ #define ETS2EN (1<<25) /* External trigger 2 timestamp enable */ #define ETS1EN (1<<24) /* External trigger 1 timestamp enable */ #define ALM2EN (1<<17) /* Timer ALM2 event enable */ #define ALM1EN (1<<16) /* Timer ALM1 event enable */ #define PP1EN (1<<7) /* Periodic pulse event 1 enable */ #define PP2EN (1<<6) /* Periodic pulse event 2 enable */ /* Bit definitions for the TMR_PEVENT register */ #define TXP2 (1<<9) /* PTP transmitted timestamp im TXTS2 */ #define TXP1 (1<<8) /* PTP transmitted timestamp in TXTS1 */ #define RXP (1<<0) /* PTP frame has been received */ /* Bit definitions for the TMR_PEMASK register */ #define TXP2EN (1<<9) /* Transmit PTP packet event 2 enable */ #define TXP1EN (1<<8) /* Transmit PTP packet event 1 enable */ #define RXPEN (1<<0) /* Receive PTP packet event enable */ /* Bit definitions for the TMR_STAT register */ #define STAT_VEC_SHIFT (0) /* Timer general purpose status vector */ #define STAT_VEC_MASK (0x3f) #define ETS1_VLD (1<<24) #define ETS2_VLD (1<<25) /* Bit definitions for the TMR_PRSC register */ #define PRSC_OCK_SHIFT (0) /* Output clock division/prescale factor. */ #define PRSC_OCK_MASK (0xffff) #define DRIVER "ptp_qoriq" #define N_EXT_TS 2 #define DEFAULT_CKSEL 1 #define DEFAULT_TMR_PRSC 2 #define DEFAULT_FIPER1_PERIOD 1000000000 #define DEFAULT_FIPER2_PERIOD 1000000000 #define DEFAULT_FIPER3_PERIOD 1000000000 struct ptp_qoriq { void __iomem *base; struct ptp_qoriq_registers regs; spinlock_t lock; /* protects regs */ struct ptp_clock *clock; struct ptp_clock_info caps; struct resource *rsrc; struct dentry *debugfs_root; struct device *dev; bool extts_fifo_support; bool fiper3_support; bool etsec; int irq; int phc_index; u32 tclk_period; /* nanoseconds */ u32 tmr_prsc; u32 tmr_add; u32 cksel; u32 tmr_fiper1; u32 tmr_fiper2; u32 tmr_fiper3; u32 (*read)(unsigned __iomem *addr); void (*write)(unsigned __iomem *addr, u32 val); }; static inline u32 qoriq_read_be(unsigned __iomem *addr) { return ioread32be(addr); } static inline void qoriq_write_be(unsigned __iomem *addr, u32 val) { iowrite32be(val, addr); } static inline u32 qoriq_read_le(unsigned __iomem *addr) { return ioread32(addr); } static inline void qoriq_write_le(unsigned __iomem *addr, u32 val) { iowrite32(val, addr); } irqreturn_t ptp_qoriq_isr(int irq, void *priv); int ptp_qoriq_init(struct ptp_qoriq *ptp_qoriq, void __iomem *base, const struct ptp_clock_info *caps); void ptp_qoriq_free(struct ptp_qoriq *ptp_qoriq); int ptp_qoriq_adjfine(struct ptp_clock_info *ptp, long scaled_ppm); int ptp_qoriq_adjtime(struct ptp_clock_info *ptp, s64 delta); int ptp_qoriq_gettime(struct ptp_clock_info *ptp, struct timespec64 *ts); int ptp_qoriq_settime(struct ptp_clock_info *ptp, const struct timespec64 *ts); int ptp_qoriq_enable(struct ptp_clock_info *ptp, struct ptp_clock_request *rq, int on); int extts_clean_up(struct ptp_qoriq *ptp_qoriq, int index, bool update_event); #ifdef CONFIG_DEBUG_FS void ptp_qoriq_create_debugfs(struct ptp_qoriq *ptp_qoriq); void ptp_qoriq_remove_debugfs(struct ptp_qoriq *ptp_qoriq); #else static inline void ptp_qoriq_create_debugfs(struct ptp_qoriq *ptp_qoriq) { } static inline void ptp_qoriq_remove_debugfs(struct ptp_qoriq *ptp_qoriq) { } #endif #endif
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