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drivers: mdio: lan865x: add mdio driver support

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Implement lan865x mdio driver to provide interface between lan865x MAC
driver and internal PHY driver phy_microchip_t1s.c. This driver is needed
to support the driver architecture followed.

Signed-off-by: Parthiban Veerasooran <parthiban.veerasooran@microchip.com>
This commit is contained in:
Parthiban Veerasooran 2024-12-16 17:02:56 +05:30 committed by Benjamin Cabé
parent 757581e43a
commit 7cfa5bf6cf
7 changed files with 236 additions and 0 deletions
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33
drivers/ethernet/eth_lan865x.c
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@ -18,9 +18,42 @@ LOG_MODULE_REGISTER(eth_lan865x, CONFIG_ETHERNET_LOG_LEVEL);
#include <zephyr/net/net_if.h>
#include <zephyr/net/ethernet.h>
#include <zephyr/net/phy.h>
#include <zephyr/drivers/ethernet/eth_lan865x.h>
#include "eth_lan865x_priv.h"
int eth_lan865x_mdio_c22_read(const struct device *dev, uint8_t prtad, uint8_t regad,
uint16_t *data)
{
struct lan865x_data *ctx = dev->data;
return oa_tc6_mdio_read(ctx->tc6, prtad, regad, data);
}
int eth_lan865x_mdio_c22_write(const struct device *dev, uint8_t prtad, uint8_t regad,
uint16_t data)
{
struct lan865x_data *ctx = dev->data;
return oa_tc6_mdio_write(ctx->tc6, prtad, regad, data);
}
int eth_lan865x_mdio_c45_read(const struct device *dev, uint8_t prtad, uint8_t devad,
uint16_t regad, uint16_t *data)
{
struct lan865x_data *ctx = dev->data;
return oa_tc6_mdio_read_c45(ctx->tc6, prtad, devad, regad, data);
}
int eth_lan865x_mdio_c45_write(const struct device *dev, uint8_t prtad, uint8_t devad,
uint16_t regad, uint16_t data)
{
struct lan865x_data *ctx = dev->data;
return oa_tc6_mdio_write_c45(ctx->tc6, prtad, devad, regad, data);
}
static int lan865x_mac_rxtx_control(const struct device *dev, bool en)
{
struct lan865x_data *ctx = dev->data;

1
drivers/mdio/CMakeLists.txt
View file

@ -17,3 +17,4 @@ zephyr_library_sources_ifdef(CONFIG_MDIO_INFINEON_XMC4XXX mdio_xmc4xxx.c)
zephyr_library_sources_ifdef(CONFIG_MDIO_NXP_ENET_QOS mdio_nxp_enet_qos.c)
zephyr_library_sources_ifdef(CONFIG_MDIO_DWCXGMAC mdio_dwcxgmac.c)
zephyr_library_sources_ifdef(CONFIG_MDIO_RENESAS_RA mdio_renesas_ra.c)
zephyr_library_sources_ifdef(CONFIG_MDIO_LAN865X mdio_lan865x.c)

1
drivers/mdio/Kconfig
View file

@ -38,6 +38,7 @@ source "drivers/mdio/Kconfig.xmc4xxx"
source "drivers/mdio/Kconfig.nxp_enet_qos"
source "drivers/mdio/Kconfig.dwcxgmac"
source "drivers/mdio/Kconfig.renesas_ra"
source "drivers/mdio/Kconfig.lan865x"
config MDIO_INIT_PRIORITY
int "Init priority"

20
drivers/mdio/Kconfig.lan865x Normal file
View file

@ -0,0 +1,20 @@
# Copyright 2024 Microchip Technology Inc
# SPDX-License-Identifier: Apache-2.0
menuconfig MDIO_LAN865X
bool "LAN865X MDIO driver"
default y
depends on DT_HAS_MICROCHIP_LAN865X_MDIO_ENABLED
depends on ETH_LAN865X
help
Enable LAN865X MDIO driver.
if MDIO_LAN865X
config MDIO_LAN865X_INIT_PRIORITY
int "LAN865X MDIO init priority"
default 81
help
LAN865X MDIO device driver initialization priority.
endif

79
drivers/mdio/mdio_lan865x.c Normal file
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@ -0,0 +1,79 @@
/*
* Copyright (c) 2024 Microchip Technology Inc.
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr/logging/log.h>
LOG_MODULE_REGISTER(mdio_lan865x, CONFIG_MDIO_LOG_LEVEL);
#define DT_DRV_COMPAT microchip_lan865x_mdio
#include <stdint.h>
#include <errno.h>
#include <zephyr/device.h>
#include <zephyr/kernel.h>
#include <zephyr/drivers/mdio.h>
#include <zephyr/drivers/ethernet/eth_lan865x.h>
struct mdio_lan865x_config {
const struct device *dev;
};
static void lan865x_mdio_bus_enable(const struct device *dev)
{
ARG_UNUSED(dev);
}
static void lan865x_mdio_bus_disable(const struct device *dev)
{
ARG_UNUSED(dev);
}
static int lan865x_mdio_c22_read(const struct device *dev, uint8_t prtad, uint8_t regad,
uint16_t *data)
{
const struct mdio_lan865x_config *const cfg = dev->config;
return eth_lan865x_mdio_c22_read(cfg->dev, prtad, regad, data);
}
static int lan865x_mdio_c22_write(const struct device *dev, uint8_t prtad, uint8_t regad,
uint16_t data)
{
const struct mdio_lan865x_config *const cfg = dev->config;
return eth_lan865x_mdio_c22_write(cfg->dev, prtad, regad, data);
}
static int lan865x_mdio_c45_read(const struct device *dev, uint8_t prtad, uint8_t devad,
uint16_t regad, uint16_t *data)
{
const struct mdio_lan865x_config *const cfg = dev->config;
return eth_lan865x_mdio_c45_read(cfg->dev, prtad, devad, regad, data);
}
static int lan865x_mdio_c45_write(const struct device *dev, uint8_t prtad, uint8_t devad,
uint16_t regad, uint16_t data)
{
const struct mdio_lan865x_config *const cfg = dev->config;
return eth_lan865x_mdio_c45_write(cfg->dev, prtad, devad, regad, data);
}
static const struct mdio_driver_api mdio_lan865x_api = {.read = lan865x_mdio_c22_read,
.write = lan865x_mdio_c22_write,
.read_c45 = lan865x_mdio_c45_read,
.write_c45 = lan865x_mdio_c45_write,
.bus_enable = lan865x_mdio_bus_enable,
.bus_disable = lan865x_mdio_bus_disable};
#define MICROCHIP_LAN865X_MDIO_INIT(n) \
static const struct mdio_lan865x_config mdio_lan865x_config_##n = { \
.dev = DEVICE_DT_GET(DT_INST_PARENT(n)), \
}; \
DEVICE_DT_INST_DEFINE(n, NULL, NULL, NULL, &mdio_lan865x_config_##n, POST_KERNEL, \
CONFIG_MDIO_LAN865X_INIT_PRIORITY, &mdio_lan865x_api);
DT_INST_FOREACH_STATUS_OKAY(MICROCHIP_LAN865X_MDIO_INIT)

10
dts/bindings/mdio/microchip,lan865x-mdio.yaml Normal file
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@ -0,0 +1,10 @@
# Copyright (c) 2024 Microchip Technology Inc.
# SPDX-License-Identifier: Apache-2.0
description: LAN865X MDIO Driver node
compatible: "microchip,lan865x-mdio"
include: mdio-controller.yaml
on-bus: lan865x

92
include/zephyr/drivers/ethernet/eth_lan865x.h Normal file
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@ -0,0 +1,92 @@
/*
* Copyright (c) 2024 Microchip Technology Inc.
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef ZEPHYR_INCLUDE_DRIVERS_ETH_LAN865X_H__
#define ZEPHYR_INCLUDE_DRIVERS_ETH_LAN865X_H__
#include <stdint.h>
#include <zephyr/kernel.h>
#include <zephyr/device.h>
/**
* @brief Read C22 registers using LAN865X MDIO Bus
*
* This routine provides an interface to perform a C22 register read on the
* LAN865X MDIO bus.
*
* @param[in] dev Pointer to the device structure for the controller
* @param[in] prtad Port address
* @param[in] regad Register address
* @param data Pointer to receive read data
*
* @retval 0 If successful.
* @retval -EIO General input / output error.
* @retval -ETIMEDOUT If transaction timedout on the bus
* @retval -ENOSYS if read is not supported
*/
int eth_lan865x_mdio_c22_read(const struct device *dev, uint8_t prtad, uint8_t regad,
uint16_t *data);
/**
* @brief Write C22 registers using LAN865X MDIO Bus
*
* This routine provides an interface to perform a C22 register write on the
* LAN865X MDIO bus.
*
* @param[in] dev Pointer to the device structure for the controller
* @param[in] prtad Port address
* @param[in] regad Register address
* @param[in] data Write data
*
* @retval 0 If successful.
* @retval -EIO General input / output error.
* @retval -ETIMEDOUT If transaction timedout on the bus
* @retval -ENOSYS if read is not supported
*/
int eth_lan865x_mdio_c22_write(const struct device *dev, uint8_t prtad, uint8_t regad,
uint16_t data);
/**
* @brief Read C45 registers using LAN865X MDIO Bus
*
* This routine provides an interface to perform a C45 register read on the
* LAN865X MDIO bus.
*
* @param[in] dev Pointer to the device structure for the controller
* @param[in] prtad Port address
* @param[in] devad MMD device address
* @param[in] regad Register address
* @param data Pointer to receive read data
*
* @retval 0 If successful.
* @retval -EIO General input / output error.
* @retval -ETIMEDOUT If transaction timedout on the bus
* @retval -ENOSYS if read is not supported
*/
int eth_lan865x_mdio_c45_read(const struct device *dev, uint8_t prtad, uint8_t devad,
uint16_t regad, uint16_t *data);
/**
* @brief Write C45 registers using LAN865X MDIO Bus
*
* This routine provides an interface to perform a C45 register write on the
* LAN865X MDIO bus.
*
* @param[in] dev Pointer to the device structure for the controller
* @param[in] prtad Port address
* @param[in] devad MMD device address
* @param[in] regad Register address
* @param[in] data Write data
*
* @retval 0 If successful.
* @retval -EIO General input / output error.
* @retval -ETIMEDOUT If transaction timedout on the bus
* @retval -ENOSYS if read is not supported
*/
int eth_lan865x_mdio_c45_write(const struct device *dev, uint8_t prtad, uint8_t devad,
uint16_t regad, uint16_t data);
#endif /* ZEPHYR_INCLUDE_DRIVERS_ETH_LAN865X_H__ */