91 lines
1.9 KiB
C
91 lines
1.9 KiB
C
/*
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* Copyright (c) 2020 AIIT XUOS Lab
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* XiUOS is licensed under Mulan PSL v2.
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* You can use this software according to the terms and conditions of the Mulan PSL v2.
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* You may obtain a copy of Mulan PSL v2 at:
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* http://license.coscl.org.cn/MulanPSL2
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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* See the Mulan PSL v2 for more details.
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*/
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/**
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* @file bus_i2c.h
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* @brief define i2c bus and drv function using bus driver framework
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* @version 1.0
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* @author AIIT XUOS Lab
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* @date 2021-04-24
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*/
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#ifndef BUS_I2C_H
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#define BUS_I2C_H
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#include <bus.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct I2cHalDrvDone
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{
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void *data;
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void (*SetSdaState) (void *data, uint8 sda_state);
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void (*SetSclState) (void *data, uint8 scl_state);
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uint8 (*GetSdaState) (void *data);
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uint8 (*GetSclState) (void *data);
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#ifdef ARCH_RISCV
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int (*udelay)(uint64 us);
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#endif
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#ifdef ARCH_ARM
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int (*udelay)(uint32 us);
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#endif
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uint32 delay_us;
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uint32 timeout;
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};
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typedef struct
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{
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uint8 i2c_sda_pin;
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uint8 i2c_scl_pin;
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}I2cBusParam;
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struct I2cDriver
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{
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struct Driver driver;
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void *private_data;
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};
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struct I2cBus
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{
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struct Bus bus;
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void *private_data;
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};
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/*Register the I2C bus*/
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int I2cBusInit(struct I2cBus *i2c_bus, const char *bus_name);
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/*Register the I2C driver*/
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int I2cDriverInit(struct I2cDriver *i2c_driver, const char *driver_name);
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/*Release the I2C device*/
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int I2cReleaseBus(struct I2cBus *i2c_bus);
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/*Register the I2C driver to the I2C bus*/
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int I2cDriverAttachToBus(const char *drv_name, const char *bus_name);
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/*Register the driver, manage with the double linklist*/
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int I2cDriverRegister(struct Driver *driver);
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/*Find the register driver*/
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DriverType I2cDriverFind(const char *drv_name, enum DriverType drv_type);
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#ifdef __cplusplus
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}
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#endif
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#endif
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