73 lines
1.8 KiB
C
73 lines
1.8 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0 */
|
||
|
|
/* Renesas R-Car Gen4 gPTP device driver
|
||
|
|
*
|
||
|
|
* Copyright (C) 2022 Renesas Electronics Corporation
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef __RCAR_GEN4_PTP_H__
|
||
|
|
#define __RCAR_GEN4_PTP_H__
|
||
|
|
|
||
|
|
#include <linux/ptp_clock_kernel.h>
|
||
|
|
|
||
|
|
#define PTPTIVC_INIT 0x19000000 /* 320MHz */
|
||
|
|
#define RCAR_GEN4_PTP_CLOCK_S4 PTPTIVC_INIT
|
||
|
|
#define RCAR_GEN4_GPTP_OFFSET_S4 0x00018000
|
||
|
|
|
||
|
|
/* for rcar_gen4_ptp_init */
|
||
|
|
enum rcar_gen4_ptp_reg_layout {
|
||
|
|
RCAR_GEN4_PTP_REG_LAYOUT_S4
|
||
|
|
};
|
||
|
|
|
||
|
|
/* driver's definitions */
|
||
|
|
#define RCAR_GEN4_RXTSTAMP_ENABLED BIT(0)
|
||
|
|
#define RCAR_GEN4_RXTSTAMP_TYPE_V2_L2_EVENT BIT(1)
|
||
|
|
#define RCAR_GEN4_RXTSTAMP_TYPE_ALL (RCAR_GEN4_RXTSTAMP_TYPE_V2_L2_EVENT | BIT(2))
|
||
|
|
#define RCAR_GEN4_RXTSTAMP_TYPE RCAR_GEN4_RXTSTAMP_TYPE_ALL
|
||
|
|
|
||
|
|
#define RCAR_GEN4_TXTSTAMP_ENABLED BIT(0)
|
||
|
|
|
||
|
|
#define PTPRO 0
|
||
|
|
|
||
|
|
enum rcar_gen4_ptp_reg_s4 {
|
||
|
|
PTPTMEC = PTPRO + 0x0010,
|
||
|
|
PTPTMDC = PTPRO + 0x0014,
|
||
|
|
PTPTIVC0 = PTPRO + 0x0020,
|
||
|
|
PTPTOVC00 = PTPRO + 0x0030,
|
||
|
|
PTPTOVC10 = PTPRO + 0x0034,
|
||
|
|
PTPTOVC20 = PTPRO + 0x0038,
|
||
|
|
PTPGPTPTM00 = PTPRO + 0x0050,
|
||
|
|
PTPGPTPTM10 = PTPRO + 0x0054,
|
||
|
|
PTPGPTPTM20 = PTPRO + 0x0058,
|
||
|
|
};
|
||
|
|
|
||
|
|
struct rcar_gen4_ptp_reg_offset {
|
||
|
|
u16 enable;
|
||
|
|
u16 disable;
|
||
|
|
u16 increment;
|
||
|
|
u16 config_t0;
|
||
|
|
u16 config_t1;
|
||
|
|
u16 config_t2;
|
||
|
|
u16 monitor_t0;
|
||
|
|
u16 monitor_t1;
|
||
|
|
u16 monitor_t2;
|
||
|
|
};
|
||
|
|
|
||
|
|
struct rcar_gen4_ptp_private {
|
||
|
|
void __iomem *addr;
|
||
|
|
struct ptp_clock *clock;
|
||
|
|
struct ptp_clock_info info;
|
||
|
|
const struct rcar_gen4_ptp_reg_offset *offs;
|
||
|
|
spinlock_t lock; /* For multiple registers access */
|
||
|
|
u32 tstamp_tx_ctrl;
|
||
|
|
u32 tstamp_rx_ctrl;
|
||
|
|
s64 default_addend;
|
||
|
|
bool initialized;
|
||
|
|
};
|
||
|
|
|
||
|
|
int rcar_gen4_ptp_register(struct rcar_gen4_ptp_private *ptp_priv,
|
||
|
|
enum rcar_gen4_ptp_reg_layout layout, u32 clock);
|
||
|
|
int rcar_gen4_ptp_unregister(struct rcar_gen4_ptp_private *ptp_priv);
|
||
|
|
struct rcar_gen4_ptp_private *rcar_gen4_ptp_alloc(struct platform_device *pdev);
|
||
|
|
|
||
|
|
#endif /* #ifndef __RCAR_GEN4_PTP_H__ */
|