Commit c1e0230e authored by Roger Quadros's avatar Roger Quadros Committed by David S. Miller
Browse files

net: ti: icss-iep: Add IEP driver 



Add a driver for Industrial Ethernet Peripheral (IEP) block of PRUSS to
support timestamping of ethernet packets and thus support PTP and PPS
for PRU ethernet ports.

Signed-off-by: default avatarRoger Quadros <rogerq@ti.com>
Signed-off-by: default avatarLokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: default avatarMurali Karicheri <m-karicheri2@ti.com>
Signed-off-by: default avatarVignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: default avatarSimon Horman <horms@kernel.org>
Signed-off-by: default avatarMD Danish Anwar <danishanwar@ti.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b1205627

drivers/net/ethernet/ti/Kconfig

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@@ -196,4 +196,15 @@ config TI_ICSSG_PRUETH 
	  to support the Ethernet operation. Currently, it supports Ethernet

	  with 1G and 100M link speed.



config TI_ICSS_IEP

	tristate "TI PRU ICSS IEP driver"

	depends on TI_PRUSS

	default TI_PRUSS

	help

	  This driver enables support for the PRU-ICSS Industrial Ethernet

	  Peripheral within a PRU-ICSS subsystem present on various TI SoCs.



	  To compile this driver as a module, choose M here. The module

	  will be called icss_iep.



endif # NET_VENDOR_TI

drivers/net/ethernet/ti/Makefile

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@@ -38,3 +38,4 @@ icssg-prueth-y := k3-cppi-desc-pool.o \ 
		  icssg/icssg_mii_cfg.o \

		  icssg/icssg_stats.o \

		  icssg/icssg_ethtool.o

obj-$(CONFIG_TI_ICSS_IEP) += icssg/icss_iep.o

drivers/net/ethernet/ti/icssg/icss_iep.c

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File added.

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drivers/net/ethernet/ti/icssg/icss_iep.h

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/* SPDX-License-Identifier: GPL-2.0 */

/* Texas Instruments ICSSG Industrial Ethernet Peripheral (IEP) Driver

 *

 * Copyright (C) 2023 Texas Instruments Incorporated - https://www.ti.com/

 *

 */



#ifndef __NET_TI_ICSS_IEP_H

#define __NET_TI_ICSS_IEP_H



#include <linux/mutex.h>

#include <linux/ptp_clock_kernel.h>

#include <linux/regmap.h>



struct icss_iep;



/* Firmware specific clock operations */

struct icss_iep_clockops {

	void (*settime)(void *clockops_data, u64 ns);

	void (*adjtime)(void *clockops_data, s64 delta);

	u64 (*gettime)(void *clockops_data, struct ptp_system_timestamp *sts);

	int (*perout_enable)(void *clockops_data,

			     struct ptp_perout_request *req, int on,

			     u64 *cmp);

	int (*extts_enable)(void *clockops_data, u32 index, int on);

};



struct icss_iep *icss_iep_get(struct device_node *np);

struct icss_iep *icss_iep_get_idx(struct device_node *np, int idx);

void icss_iep_put(struct icss_iep *iep);

int icss_iep_init(struct icss_iep *iep, const struct icss_iep_clockops *clkops,

		  void *clockops_data, u32 cycle_time_ns);

int icss_iep_exit(struct icss_iep *iep);

int icss_iep_get_count_low(struct icss_iep *iep);

int icss_iep_get_count_hi(struct icss_iep *iep);

int icss_iep_get_ptp_clock_idx(struct icss_iep *iep);



#endif /* __NET_TI_ICSS_IEP_H */