36 lines
922 B
C
36 lines
922 B
C
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/*
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* Copyright (c) 2017 Intel Corporation
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <syscall_handler.h>
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#include <i2c.h>
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_SYSCALL_HANDLER(i2c_configure, dev, dev_config)
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{
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_SYSCALL_OBJ(dev, K_OBJ_DRIVER_I2C);
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return _impl_i2c_configure((struct device *)dev, dev_config);
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}
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_SYSCALL_HANDLER(i2c_transfer, dev, msgs, num_msgs, addr)
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{
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int i;
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struct i2c_msg *msg;
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_SYSCALL_OBJ(dev, K_OBJ_DRIVER_I2C);
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/* We need to be able to read the overall array of messages */
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_SYSCALL_MEMORY_ARRAY_READ(msgs, num_msgs, sizeof(struct i2c_msg));
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/* Validate the buffers in each message struct. Read options require
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* that the target buffer be writable
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*/
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for (msg = (struct i2c_msg *)msgs, i = 0; i < num_msgs; i++, msg++) {
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_SYSCALL_MEMORY(msg->buf, msg->len, msg->flags & I2C_MSG_READ);
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}
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return _impl_i2c_transfer((struct device *)dev, (struct i2c_msg *)msgs,
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(u8_t)num_msgs, (u16_t)addr);
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}
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