forked from xuos/xiuos
124 lines
3.4 KiB
C
124 lines
3.4 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.c
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* @brief register i2c bus 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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#include <bus_i2c.h>
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#include <dev_i2c.h>
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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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{
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NULL_PARAM_CHECK(i2c_bus);
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NULL_PARAM_CHECK(bus_name);
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x_err_t ret = EOK;
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if (BUS_INSTALL != i2c_bus->bus.bus_state) {
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strncpy(i2c_bus->bus.bus_name, bus_name, NAME_NUM_MAX);
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i2c_bus->bus.bus_type = TYPE_I2C_BUS;
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i2c_bus->bus.bus_state = BUS_INSTALL;
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i2c_bus->bus.private_data = i2c_bus->private_data;
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ret = BusRegister(&i2c_bus->bus);
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if (EOK != ret) {
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KPrintf("I2cBusInit BusRegister error %u\n", ret);
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return ret;
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}
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} else {
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KPrintf("I2cBusInit BusRegister bus has been register state%u\n", i2c_bus->bus.bus_state);
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}
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return ret;
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}
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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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{
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NULL_PARAM_CHECK(i2c_driver);
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NULL_PARAM_CHECK(driver_name);
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x_err_t ret = EOK;
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if (DRV_INSTALL != i2c_driver->driver.driver_state) {
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i2c_driver->driver.driver_type = TYPE_I2C_DRV;
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i2c_driver->driver.driver_state = DRV_INSTALL;
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strncpy(i2c_driver->driver.drv_name, driver_name, NAME_NUM_MAX);
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i2c_driver->driver.private_data = i2c_driver->private_data;
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i2c_driver->driver.configure = i2c_driver->configure;
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ret = I2cDriverRegister(&i2c_driver->driver);
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if (EOK != ret) {
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KPrintf("I2cDriverInit DriverRegister error %u\n", ret);
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return ret;
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}
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} else {
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KPrintf("I2cDriverInit DriverRegister driver has been register state%u\n", i2c_driver->driver.driver_state);
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}
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return ret;
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}
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/*Release the I2C device*/
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int I2cReleaseBus(struct I2cBus *i2c_bus)
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{
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NULL_PARAM_CHECK(i2c_bus);
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return BusRelease(&i2c_bus->bus);
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}
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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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{
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NULL_PARAM_CHECK(drv_name);
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NULL_PARAM_CHECK(bus_name);
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x_err_t ret = EOK;
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struct Bus *bus;
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struct Driver *driver;
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bus = BusFind(bus_name);
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if (NONE == bus) {
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KPrintf("I2cDriverAttachToBus find i2c bus error!name %s\n", bus_name);
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return ERROR;
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}
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if (TYPE_I2C_BUS == bus->bus_type) {
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driver = I2cDriverFind(drv_name, TYPE_I2C_DRV);
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if (NONE == driver) {
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KPrintf("I2cDriverAttachToBus find i2c driver error!name %s\n", drv_name);
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return ERROR;
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}
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if (TYPE_I2C_DRV == driver->driver_type) {
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ret = DriverRegisterToBus(bus, driver);
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if (EOK != ret) {
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KPrintf("I2cDriverAttachToBus DriverRegisterToBus error %u\n", ret);
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return ERROR;
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}
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}
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}
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return ret;
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}
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