103 lines
2.8 KiB
C
103 lines
2.8 KiB
C
/****************************************************************************
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* boards/risc-v/mpfs/common/src/mpfs_i2c.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <debug.h>
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#include <errno.h>
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#include <sys/types.h>
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#include <nuttx/i2c/i2c_master.h>
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#include "mpfs_i2c.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: board_i2c_init
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*
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* Description:
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* Configure the I2C driver.
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*
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* Returned Value:
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* Zero (OK) is returned on success; A negated errno value is returned
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* to indicate the nature of any failure.
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*
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****************************************************************************/
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int mpfs_board_i2c_init(void)
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{
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int ret = OK;
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#if defined(CONFIG_MPFS_I2C0) || defined(CONFIG_MPFS_I2C1)
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#ifdef CONFIG_I2C_DRIVER
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int bus = 0;
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#endif
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struct i2c_master_s *i2c;
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#endif
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#ifdef CONFIG_MPFS_I2C0
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i2c = mpfs_i2cbus_initialize(0);
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if (i2c == NULL)
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{
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i2cerr("ERROR: Failed to init I2C0 interface\n");
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return -ENODEV;
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}
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#ifdef CONFIG_I2C_DRIVER
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ret = i2c_register(i2c, bus++);
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if (ret < 0)
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{
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i2cerr("ERROR: Failed to register I2C0 driver: %d\n", ret);
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mpfs_i2cbus_uninitialize(i2c);
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return ret;
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}
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#endif
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#endif
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#ifdef CONFIG_MPFS_I2C1
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i2c = mpfs_i2cbus_initialize(1);
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if (i2c == NULL)
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{
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i2cerr("ERROR: Failed to init I2C1 interface\n");
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return -ENODEV;
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}
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#ifdef CONFIG_I2C_DRIVER
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ret = i2c_register(i2c, bus);
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if (ret < 0)
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{
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i2cerr("ERROR: Failed to register I2C1 driver: %d\n", ret);
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mpfs_i2cbus_uninitialize(i2c);
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return ret;
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}
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#endif
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#endif
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return ret;
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}
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