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net: ti: icss-iep: Add IEP driver

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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: Roger Quadros <rogerq@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: MD Danish Anwar <danishanwar@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Roger Quadros
2023-08-24 17:16:16 +05:30
committed by David S. Miller
parent b120562783
commit c1e0230eea
4 changed files with 989 additions and 0 deletions
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11
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

1
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

939
drivers/net/ethernet/ti/icssg/icss_iep.c Normal file
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File diff suppressed because it is too large Load Diff

38
drivers/net/ethernet/ti/icssg/icss_iep.h Normal file
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@@ -0,0 +1,38 @@
/* 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 */