1 /* 2 * Copyright (c) 2019-2025 Allwinner Technology Co., Ltd. ALL rights reserved. 3 * 4 * Allwinner is a trademark of Allwinner Technology Co.,Ltd., registered in 5 * the the people's Republic of China and other countries. 6 * All Allwinner Technology Co.,Ltd. trademarks are used with permission. 7 * 8 * DISCLAIMER 9 * THIRD PARTY LICENCES MAY BE REQUIRED TO IMPLEMENT THE SOLUTION/PRODUCT. 10 * IF YOU NEED TO INTEGRATE THIRD PARTY’S TECHNOLOGY (SONY, DTS, DOLBY, AVS OR MPEGLA, ETC.) 11 * IN ALLWINNERS’SDK OR PRODUCTS, YOU SHALL BE SOLELY RESPONSIBLE TO OBTAIN 12 * ALL APPROPRIATELY REQUIRED THIRD PARTY LICENCES. 13 * ALLWINNER SHALL HAVE NO WARRANTY, INDEMNITY OR OTHER OBLIGATIONS WITH RESPECT TO MATTERS 14 * COVERED UNDER ANY REQUIRED THIRD PARTY LICENSE. 15 * YOU ARE SOLELY RESPONSIBLE FOR YOUR USAGE OF THIRD PARTY’S TECHNOLOGY. 16 * 17 * 18 * THIS SOFTWARE IS PROVIDED BY ALLWINNER"AS IS" AND TO THE MAXIMUM EXTENT 19 * PERMITTED BY LAW, ALLWINNER EXPRESSLY DISCLAIMS ALL WARRANTIES OF ANY KIND, 20 * WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING WITHOUT LIMITATION REGARDING 21 * THE TITLE, NON-INFRINGEMENT, ACCURACY, CONDITION, COMPLETENESS, PERFORMANCE 22 * OR MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 23 * IN NO EVENT SHALL ALLWINNER BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 26 * LOSS OF USE, DATA, OR PROFITS, OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 28 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 30 * OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 #ifndef __SOUND_DMA_H 33 #define __SOUND_DMA_H 34 #include "snd_core.h" 35 #include <hal_dma.h> 36 37 int snd_dmaengine_pcm_open_request_chan(struct snd_pcm_substream *substream); 38 snd_pcm_uframes_t snd_dmaengine_pcm_pointer(struct snd_pcm_substream *substream); 39 int snd_dmaengine_pcm_close_release_chan(struct snd_pcm_substream *substream); 40 int snd_dmaengine_pcm_trigger(struct snd_pcm_substream *substream, int cmd); 41 int snd_hwparams_to_dma_slave_config(const struct snd_pcm_substream *substream, 42 const struct snd_pcm_hw_params *params, 43 struct dma_slave_config *slave_config); 44 struct dma_chan *snd_dmaengine_pcm_get_chan(struct snd_pcm_substream *substream); 45 46 #endif /* __SOUND_DMA_H */ 47