d22c687077
This changes handles below. 1. Create btfm codec driver. 2. add support to enumerate char device. 3. create hardware endpoint abstract layers. 4. Register with ALSA driver CRs-Fixed: 3298745 Change-Id: Id75dad16de8414b3b6a24d265c8acb54eca4d5dc
100 lines
2.4 KiB
C
100 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.
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*/
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#include "btfm_codec.h"
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#include "btfm_codec_hw_interface.h"
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#include "btfm_codec_interface.h"
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struct mutex hwep_drv_lock;
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int btfmcodec_register_hw_ep (struct hwep_data *ep_info)
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{
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struct btfmcodec_data *btfmcodec;
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struct hwep_data *hwep_info;
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int ret = 0;
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// ToDo Check wether we need mutex_init api
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mutex_lock(&hwep_drv_lock);
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btfmcodec = btfm_get_btfmcodec();
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if (!btfmcodec) {
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BTFMCODEC_ERR("btfm codec driver it not initialized");
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ret = -EPERM;
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goto end;
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}
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if (ep_info->num_dai == 0) {
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BTFMCODEC_ERR("no active information provided by hw ep interface");
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ret = -EPERM;
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goto end;
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}
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hwep_info = btfmcodec->hwep_info;
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if (hwep_info) {
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BTFMCODEC_ERR("driver already holds hardware endpoint info");
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ret = -EPERM;
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goto end;
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}
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hwep_info = kzalloc(sizeof(struct hwep_data), GFP_KERNEL);
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if (!hwep_info) {
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BTFMCODEC_ERR("%s: failed to allocate memory\n", __func__);
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ret = -ENOMEM;
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goto end;
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}
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btfmcodec->hwep_info = hwep_info;
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memcpy(hwep_info, ep_info, sizeof(struct hwep_data));
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BTFMCODEC_INFO("Below driver registered with btfm codec\n");
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BTFMCODEC_INFO("Driver name: %s\n", hwep_info->driver_name);
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BTFMCODEC_INFO("Num of dai: %d supported", hwep_info->num_dai);
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BTFMCODEC_INFO("Master config enabled: %u\n", test_bit(BTADV_AUDIO_MASTER_CONFIG,
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&hwep_info->flags));
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ret = btfm_register_codec(hwep_info);
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end:
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mutex_unlock(&hwep_drv_lock);
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return ret;
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}
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int btfmcodec_unregister_hw_ep (char *driver_name)
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{
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struct btfmcodec_data *btfmcodec;
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struct hwep_data *hwep_info;
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int ret;
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mutex_lock(&hwep_drv_lock);
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btfmcodec = btfm_get_btfmcodec();
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if (!btfmcodec) {
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BTFMCODEC_ERR("btfm codec driver it not initialized");
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ret = -EPERM;
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goto end;
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}
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hwep_info = btfmcodec->hwep_info;
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if (!hwep_info) {
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BTFMCODEC_ERR("%s: no active hardware endpoint registered\n", __func__);
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ret = -EPERM;
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goto end;
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}
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if(!strncmp(hwep_info->driver_name, driver_name, DEVICE_NAME_MAX_LEN)) {
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btfm_unregister_codec();
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kfree(hwep_info);
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BTFMCODEC_INFO("%s: deleted %s hardware endpoint\n", __func__, driver_name);
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ret = -1;
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goto end;
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} else {
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BTFMCODEC_ERR("%s: No hardware endpoint registered with %s\n", __func__, driver_name);
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ret = -1;
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goto end;
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}
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end:
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mutex_unlock(&hwep_drv_lock);
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return ret;
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}
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EXPORT_SYMBOL(btfmcodec_register_hw_ep);
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EXPORT_SYMBOL(btfmcodec_unregister_hw_ep);
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