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1/* SPDX-License-Identifier: GPL-2.0 */2/* Renesas R-Car Gen4 gPTP device driver3 *4 * Copyright (C) 2022 Renesas Electronics Corporation5 */6 7#ifndef __RCAR_GEN4_PTP_H__8#define __RCAR_GEN4_PTP_H__9 10#include <linux/ptp_clock_kernel.h>11 12#define RCAR_GEN4_GPTP_OFFSET_S4 0x0001800013 14enum rcar_gen4_ptp_reg_layout {15 RCAR_GEN4_PTP_REG_LAYOUT16};17 18/* driver's definitions */19#define RCAR_GEN4_RXTSTAMP_ENABLED BIT(0)20#define RCAR_GEN4_RXTSTAMP_TYPE_V2_L2_EVENT BIT(1)21#define RCAR_GEN4_RXTSTAMP_TYPE_ALL (RCAR_GEN4_RXTSTAMP_TYPE_V2_L2_EVENT | BIT(2))22#define RCAR_GEN4_RXTSTAMP_TYPE RCAR_GEN4_RXTSTAMP_TYPE_ALL23 24#define RCAR_GEN4_TXTSTAMP_ENABLED BIT(0)25 26#define PTPRO 027 28enum rcar_gen4_ptp_reg {29 PTPTMEC = PTPRO + 0x0010,30 PTPTMDC = PTPRO + 0x0014,31 PTPTIVC0 = PTPRO + 0x0020,32 PTPTOVC00 = PTPRO + 0x0030,33 PTPTOVC10 = PTPRO + 0x0034,34 PTPTOVC20 = PTPRO + 0x0038,35 PTPGPTPTM00 = PTPRO + 0x0050,36 PTPGPTPTM10 = PTPRO + 0x0054,37 PTPGPTPTM20 = PTPRO + 0x0058,38};39 40struct rcar_gen4_ptp_reg_offset {41 u16 enable;42 u16 disable;43 u16 increment;44 u16 config_t0;45 u16 config_t1;46 u16 config_t2;47 u16 monitor_t0;48 u16 monitor_t1;49 u16 monitor_t2;50};51 52struct rcar_gen4_ptp_private {53 void __iomem *addr;54 struct ptp_clock *clock;55 struct ptp_clock_info info;56 const struct rcar_gen4_ptp_reg_offset *offs;57 spinlock_t lock; /* For multiple registers access */58 u32 tstamp_tx_ctrl;59 u32 tstamp_rx_ctrl;60 s64 default_addend;61 bool initialized;62};63 64int rcar_gen4_ptp_register(struct rcar_gen4_ptp_private *ptp_priv,65 enum rcar_gen4_ptp_reg_layout layout, u32 rate);66int rcar_gen4_ptp_unregister(struct rcar_gen4_ptp_private *ptp_priv);67struct rcar_gen4_ptp_private *rcar_gen4_ptp_alloc(struct platform_device *pdev);68 69#endif /* #ifndef __RCAR_GEN4_PTP_H__ */70