include/soc/mscc/ocelot_ptp.h

   1 /* SPDX-License-Identifier: (GPL-2.0 OR MIT) */
   2 /*
   3  * Microsemi Ocelot Switch driver
   4  *
   5  * License: Dual MIT/GPL
   6  * Copyright (c) 2017 Microsemi Corporation
   7  * Copyright 2020 NXP
   8  */
   9
  10 #ifndef _MSCC_OCELOT_PTP_H_
  11 #define _MSCC_OCELOT_PTP_H_
  12
  13 #include <linux/ptp_clock_kernel.h>
  14 #include <soc/mscc/ocelot.h>
  15
  16 #define PTP_PIN_CFG_RSZ                 0x20
  17 #define PTP_PIN_TOD_SEC_MSB_RSZ         PTP_PIN_CFG_RSZ
  18 #define PTP_PIN_TOD_SEC_LSB_RSZ         PTP_PIN_CFG_RSZ
  19 #define PTP_PIN_TOD_NSEC_RSZ            PTP_PIN_CFG_RSZ
  20 #define PTP_PIN_WF_HIGH_PERIOD_RSZ      PTP_PIN_CFG_RSZ
  21 #define PTP_PIN_WF_LOW_PERIOD_RSZ       PTP_PIN_CFG_RSZ
  22
  23 #define PTP_PIN_CFG_DOM                 BIT(0)
  24 #define PTP_PIN_CFG_SYNC                BIT(2)
  25 #define PTP_PIN_CFG_ACTION(x)           ((x) << 3)
  26 #define PTP_PIN_CFG_ACTION_MASK         PTP_PIN_CFG_ACTION(0x7)
  27
  28 enum {
  29         PTP_PIN_ACTION_IDLE = 0,
  30         PTP_PIN_ACTION_LOAD,
  31         PTP_PIN_ACTION_SAVE,
  32         PTP_PIN_ACTION_CLOCK,
  33         PTP_PIN_ACTION_DELTA,
  34         PTP_PIN_ACTION_NOSYNC,
  35         PTP_PIN_ACTION_SYNC,
  36 };
  37
  38 #define PTP_CFG_MISC_PTP_EN             BIT(2)
  39
  40 #define PSEC_PER_SEC                    1000000000000LL
  41
  42 #define PTP_CFG_CLK_ADJ_CFG_ENA         BIT(0)
  43 #define PTP_CFG_CLK_ADJ_CFG_DIR         BIT(1)
  44
  45 #define PTP_CFG_CLK_ADJ_FREQ_NS         BIT(30)
  46
  47 int ocelot_ptp_gettime64(struct ptp_clock_info *ptp, struct timespec64 *ts);
  48 int ocelot_ptp_settime64(struct ptp_clock_info *ptp,
  49                          const struct timespec64 *ts);
  50 int ocelot_ptp_adjtime(struct ptp_clock_info *ptp, s64 delta);
  51 int ocelot_ptp_adjfine(struct ptp_clock_info *ptp, long scaled_ppm);
  52 int ocelot_ptp_verify(struct ptp_clock_info *ptp, unsigned int pin,
  53                       enum ptp_pin_function func, unsigned int chan);
  54 int ocelot_ptp_enable(struct ptp_clock_info *ptp,
  55                       struct ptp_clock_request *rq, int on);
  56 int ocelot_init_timestamp(struct ocelot *ocelot,
  57                           const struct ptp_clock_info *info);
  58 int ocelot_deinit_timestamp(struct ocelot *ocelot);
  59 #endif