esp-idf/components/esp_eth/include/esp_eth_phy.h
2019-11-20 10:36:45 +08:00

263 lines
7.0 KiB
C

// Copyright 2019 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#pragma once
#ifdef __cplusplus
extern "C" {
#endif
#include <stdbool.h>
#include <stdatomic.h>
#include "sdkconfig.h"
#include "esp_eth_com.h"
/**
* @brief Ethernet PHY
*
*/
typedef struct esp_eth_phy_s esp_eth_phy_t;
/**
* @brief Ethernet PHY
*
*/
struct esp_eth_phy_s {
/**
* @brief Reference count of PHY instance
*
*/
atomic_int ref_count;
/**
* @brief Set mediator for PHY
*
* @param[in] phy: Ethernet PHY instance
* @param[in] mediator: mediator of Ethernet driver
*
* @return
* - ESP_OK: set mediator for Ethernet PHY instance successfully
* - ESP_ERR_INVALID_ARG: set mediator for Ethernet PHY instance failed because of some invalid arguments
*
*/
esp_err_t (*set_mediator)(esp_eth_phy_t *phy, esp_eth_mediator_t *mediator);
/**
* @brief Software Reset Ethernet PHY
*
* @param[in] phy: Ethernet PHY instance
*
* @return
* - ESP_OK: reset Ethernet PHY successfully
* - ESP_FAIL: reset Ethernet PHY failed because some error occurred
*
*/
esp_err_t (*reset)(esp_eth_phy_t *phy);
/**
* @brief Hardware Reset Ethernet PHY
*
* @note Hardware reset is mostly done by pull down and up PHY's nRST pin
*
* @param[in] phy: Ethernet PHY instance
*
* @return
* - ESP_OK: reset Ethernet PHY successfully
* - ESP_FAIL: reset Ethernet PHY failed because some error occurred
*
*/
esp_err_t (*reset_hw)(esp_eth_phy_t *phy);
/**
* @brief Initialize Ethernet PHY
*
* @param[in] phy: Ethernet PHY instance
*
* @return
* - ESP_OK: initialize Ethernet PHY successfully
* - ESP_FAIL: initialize Ethernet PHY failed because some error occurred
*
*/
esp_err_t (*init)(esp_eth_phy_t *phy);
/**
* @brief Deinitialize Ethernet PHY
*
* @param[in] phyL Ethernet PHY instance
*
* @return
* - ESP_OK: deinitialize Ethernet PHY successfully
* - ESP_FAIL: deinitialize Ethernet PHY failed because some error occurred
*
*/
esp_err_t (*deinit)(esp_eth_phy_t *phy);
/**
* @brief Start auto negotiation
*
* @param[in] phy: Ethernet PHY instance
*
* @return
* - ESP_OK: restart auto negotiation successfully
* - ESP_FAIL: restart auto negotiation failed because some error occurred
*
*/
esp_err_t (*negotiate)(esp_eth_phy_t *phy);
/**
* @brief Get Ethernet PHY link status
*
* @param[in] phy: Ethernet PHY instance
*
* @return
* - ESP_OK: get Ethernet PHY link status successfully
* - ESP_FAIL: get Ethernet PHY link status failed because some error occurred
*
*/
esp_err_t (*get_link)(esp_eth_phy_t *phy);
/**
* @brief Power control of Ethernet PHY
*
* @param[in] phy: Ethernet PHY instance
* @param[in] enable: set true to power on Ethernet PHY; ser false to power off Ethernet PHY
*
* @return
* - ESP_OK: control Ethernet PHY power successfully
* - ESP_FAIL: control Ethernet PHY power failed because some error occurred
*
*/
esp_err_t (*pwrctl)(esp_eth_phy_t *phy, bool enable);
/**
* @brief Set PHY chip address
*
* @param[in] phy: Ethernet PHY instance
* @param[in] addr: PHY chip address
*
* @return
* - ESP_OK: set Ethernet PHY address successfully
* - ESP_FAIL: set Ethernet PHY address failed because some error occurred
*
*/
esp_err_t (*set_addr)(esp_eth_phy_t *phy, uint32_t addr);
/**
* @brief Get PHY chip address
*
* @param[in] phy: Ethernet PHY instance
* @param[out] addr: PHY chip address
*
* @return
* - ESP_OK: get Ethernet PHY address successfully
* - ESP_ERR_INVALID_ARG: get Ethernet PHY address failed because of invalid argument
*
*/
esp_err_t (*get_addr)(esp_eth_phy_t *phy, uint32_t *addr);
/**
* @brief Free memory of Ethernet PHY instance
*
* @param[in] phy: Ethernet PHY instance
*
* @return
* - ESP_OK: free PHY instance successfully
* - ESP_FAIL: free PHY instance failed because some error occurred
*
*/
esp_err_t (*del)(esp_eth_phy_t *phy);
};
/**
* @brief Ethernet PHY configuration
*
*/
typedef struct {
uint32_t phy_addr; /*!< PHY address */
uint32_t reset_timeout_ms; /*!< Reset timeout value (Unit: ms) */
uint32_t autonego_timeout_ms; /*!< Auto-negotiation timeout value (Unit: ms) */
int reset_gpio_num; /*!< Reset GPIO number, -1 means no hardware reset */
} eth_phy_config_t;
/**
* @brief Default configuration for Ethernet PHY object
*
*/
#define ETH_PHY_DEFAULT_CONFIG() \
{ \
.phy_addr = 1, \
.reset_timeout_ms = 100, \
.autonego_timeout_ms = 4000, \
.reset_gpio_num = 5, \
}
/**
* @brief Create a PHY instance of IP101
*
* @param[in] config: configuration of PHY
*
* @return
* - instance: create PHY instance successfully
* - NULL: create PHY instance failed because some error occurred
*/
esp_eth_phy_t *esp_eth_phy_new_ip101(const eth_phy_config_t *config);
/**
* @brief Create a PHY instance of RTL8201
*
* @param[in] config: configuration of PHY
*
* @return
* - instance: create PHY instance successfully
* - NULL: create PHY instance failed because some error occurred
*/
esp_eth_phy_t *esp_eth_phy_new_rtl8201(const eth_phy_config_t *config);
/**
* @brief Create a PHY instance of LAN8720
*
* @param[in] config: configuration of PHY
*
* @return
* - instance: create PHY instance successfully
* - NULL: create PHY instance failed because some error occurred
*/
esp_eth_phy_t *esp_eth_phy_new_lan8720(const eth_phy_config_t *config);
/**
* @brief Create a PHY instance of DP83848
*
* @param[in] config: configuration of PHY
*
* @return
* - instance: create PHY instance successfully
* - NULL: create PHY instance failed because some error occurred
*/
esp_eth_phy_t *esp_eth_phy_new_dp83848(const eth_phy_config_t *config);
#if CONFIG_ETH_SPI_ETHERNET_DM9051
/**
* @brief Create a PHY instance of DM9051
*
* @param[in] config: configuration of PHY
*
* @return
* - instance: create PHY instance successfully
* - NULL: create PHY instance failed because some error occurred
*/
esp_eth_phy_t *esp_eth_phy_new_dm9051(const eth_phy_config_t *config);
#endif
#ifdef __cplusplus
}
#endif