39 lines
1.1 KiB
C
39 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Renesas R-Car Gen4 gPTP device driver
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*
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* Copyright (C) 2022 Renesas Electronics Corporation
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*/
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#ifndef __RCAR_GEN4_PTP_H__
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#define __RCAR_GEN4_PTP_H__
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#include <linux/ptp_clock_kernel.h>
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#define RCAR_GEN4_GPTP_OFFSET_S4 0x00018000
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/* driver's definitions */
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#define RCAR_GEN4_RXTSTAMP_ENABLED BIT(0)
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#define RCAR_GEN4_RXTSTAMP_TYPE_V2_L2_EVENT BIT(1)
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#define RCAR_GEN4_RXTSTAMP_TYPE_ALL (RCAR_GEN4_RXTSTAMP_TYPE_V2_L2_EVENT | BIT(2))
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#define RCAR_GEN4_RXTSTAMP_TYPE RCAR_GEN4_RXTSTAMP_TYPE_ALL
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#define RCAR_GEN4_TXTSTAMP_ENABLED BIT(0)
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struct rcar_gen4_ptp_private {
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void __iomem *addr;
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struct ptp_clock *clock;
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struct ptp_clock_info info;
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spinlock_t lock; /* For multiple registers access */
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u32 tstamp_tx_ctrl;
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u32 tstamp_rx_ctrl;
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s64 default_addend;
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bool initialized;
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};
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int rcar_gen4_ptp_register(struct rcar_gen4_ptp_private *ptp_priv, u32 rate);
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int rcar_gen4_ptp_unregister(struct rcar_gen4_ptp_private *ptp_priv);
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struct rcar_gen4_ptp_private *rcar_gen4_ptp_alloc(struct platform_device *pdev);
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#endif /* #ifndef __RCAR_GEN4_PTP_H__ */
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