58 lines
1.1 KiB
C
58 lines
1.1 KiB
C
/*
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* Copyright (c) 2018 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 <kernel.h>
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#include <string.h>
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#include <drivers/i2s.h>
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int z_impl_i2s_buf_read(const struct device *dev, void *buf, size_t *size)
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{
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void *mem_block;
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int ret;
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ret = i2s_read((const struct device *)dev, &mem_block, size);
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if (!ret) {
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struct i2s_config *rx_cfg =
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i2s_config_get((const struct device *)dev, I2S_DIR_RX);
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memcpy(buf, mem_block, *size);
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k_mem_slab_free(rx_cfg->mem_slab, &mem_block);
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}
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return ret;
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}
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int z_impl_i2s_buf_write(const struct device *dev, void *buf, size_t size)
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{
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int ret;
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struct i2s_config *tx_cfg;
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void *mem_block;
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tx_cfg = i2s_config_get((const struct device *)dev, I2S_DIR_TX);
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if (!tx_cfg) {
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return -EIO;
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}
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if (size > tx_cfg->block_size) {
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return -EINVAL;
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}
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ret = k_mem_slab_alloc(tx_cfg->mem_slab, &mem_block, K_FOREVER);
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if (ret < 0) {
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return -ENOMEM;
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}
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memcpy(mem_block, (void *)buf, size);
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ret = i2s_write((const struct device *)dev, mem_block, size);
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if (ret != 0) {
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k_mem_slab_free(tx_cfg->mem_slab, &mem_block);
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}
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return ret;
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}
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