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authorChristian Pointner <equinox@helsinki.at>2024-05-10 18:52:23 (GMT)
committerChristian Pointner <equinox@helsinki.at>2024-05-10 18:52:23 (GMT)
commita641800acf13b5fb1463d4280c3ee7fc267143fb (patch)
tree248b647a682f71d9eb90d14d24081368ea905a42 /snd-alpx/core/generic/5.5/dmaengine_pcm.h
parentcc4badffe0e02d159c21eb90ea080a6a2f90cb4b (diff)
import whole driver package
Diffstat (limited to 'snd-alpx/core/generic/5.5/dmaengine_pcm.h')
-rw-r--r--snd-alpx/core/generic/5.5/dmaengine_pcm.h164
1 files changed, 0 insertions, 164 deletions
diff --git a/snd-alpx/core/generic/5.5/dmaengine_pcm.h b/snd-alpx/core/generic/5.5/dmaengine_pcm.h
deleted file mode 100644
index b652206..0000000
--- a/snd-alpx/core/generic/5.5/dmaengine_pcm.h
+++ /dev/null
@@ -1,164 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0+
- *
- * Copyright (C) 2012, Analog Devices Inc.
- * Author: Lars-Peter Clausen <lars@metafoo.de>
- */
-
-#ifndef __SOUND_DMAENGINE_PCM_H__
-#define __SOUND_DMAENGINE_PCM_H__
-
-#include <sound/pcm.h>
-#include <sound/soc.h>
-#include <linux/dmaengine.h>
-
-/**
- * snd_pcm_substream_to_dma_direction - Get dma_transfer_direction for a PCM
- * substream
- * @substream: PCM substream
- */
-static inline enum dma_transfer_direction
-snd_pcm_substream_to_dma_direction(const struct snd_pcm_substream *substream)
-{
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
- return DMA_MEM_TO_DEV;
- else
- return DMA_DEV_TO_MEM;
-}
-
-int snd_hwparams_to_dma_slave_config(const struct snd_pcm_substream *substream,
- const struct snd_pcm_hw_params *params, struct dma_slave_config *slave_config);
-int snd_dmaengine_pcm_trigger(struct snd_pcm_substream *substream, int cmd);
-snd_pcm_uframes_t snd_dmaengine_pcm_pointer(struct snd_pcm_substream *substream);
-snd_pcm_uframes_t snd_dmaengine_pcm_pointer_no_residue(struct snd_pcm_substream *substream);
-
-int snd_dmaengine_pcm_open(struct snd_pcm_substream *substream,
- struct dma_chan *chan);
-int snd_dmaengine_pcm_close(struct snd_pcm_substream *substream);
-
-int snd_dmaengine_pcm_open_request_chan(struct snd_pcm_substream *substream,
- dma_filter_fn filter_fn, void *filter_data);
-int snd_dmaengine_pcm_close_release_chan(struct snd_pcm_substream *substream);
-
-struct dma_chan *snd_dmaengine_pcm_request_channel(dma_filter_fn filter_fn,
- void *filter_data);
-struct dma_chan *snd_dmaengine_pcm_get_chan(struct snd_pcm_substream *substream);
-
-/*
- * The DAI supports packed transfers, eg 2 16-bit samples in a 32-bit word.
- * If this flag is set the dmaengine driver won't put any restriction on
- * the supported sample formats and set the DMA transfer size to undefined.
- * The DAI driver is responsible to disable any unsupported formats in it's
- * configuration and catch corner cases that are not already handled in
- * the ALSA core.
- */
-#define SND_DMAENGINE_PCM_DAI_FLAG_PACK BIT(0)
-
-/**
- * struct snd_dmaengine_dai_dma_data - DAI DMA configuration data
- * @addr: Address of the DAI data source or destination register.
- * @addr_width: Width of the DAI data source or destination register.
- * @maxburst: Maximum number of words(note: words, as in units of the
- * src_addr_width member, not bytes) that can be send to or received from the
- * DAI in one burst.
- * @slave_id: Slave requester id for the DMA channel.
- * @filter_data: Custom DMA channel filter data, this will usually be used when
- * requesting the DMA channel.
- * @chan_name: Custom channel name to use when requesting DMA channel.
- * @fifo_size: FIFO size of the DAI controller in bytes
- * @flags: PCM_DAI flags, only SND_DMAENGINE_PCM_DAI_FLAG_PACK for now
- */
-struct snd_dmaengine_dai_dma_data {
- dma_addr_t addr;
- enum dma_slave_buswidth addr_width;
- u32 maxburst;
- unsigned int slave_id;
- void *filter_data;
- const char *chan_name;
- unsigned int fifo_size;
- unsigned int flags;
-};
-
-void snd_dmaengine_pcm_set_config_from_dai_data(
- const struct snd_pcm_substream *substream,
- const struct snd_dmaengine_dai_dma_data *dma_data,
- struct dma_slave_config *config);
-
-int snd_dmaengine_pcm_refine_runtime_hwparams(
- struct snd_pcm_substream *substream,
- struct snd_dmaengine_dai_dma_data *dma_data,
- struct snd_pcm_hardware *hw,
- struct dma_chan *chan);
-
-/*
- * Try to request the DMA channel using compat_request_channel or
- * compat_filter_fn if it couldn't be requested through devicetree.
- */
-#define SND_DMAENGINE_PCM_FLAG_COMPAT BIT(0)
-/*
- * Don't try to request the DMA channels through devicetree. This flag only
- * makes sense if SND_DMAENGINE_PCM_FLAG_COMPAT is set as well.
- */
-#define SND_DMAENGINE_PCM_FLAG_NO_DT BIT(1)
-/*
- * The PCM is half duplex and the DMA channel is shared between capture and
- * playback.
- */
-#define SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX BIT(3)
-
-/**
- * struct snd_dmaengine_pcm_config - Configuration data for dmaengine based PCM
- * @prepare_slave_config: Callback used to fill in the DMA slave_config for a
- * PCM substream. Will be called from the PCM drivers hwparams callback.
- * @compat_request_channel: Callback to request a DMA channel for platforms
- * which do not use devicetree.
- * @process: Callback used to apply processing on samples transferred from/to
- * user space.
- * @compat_filter_fn: Will be used as the filter function when requesting a
- * channel for platforms which do not use devicetree. The filter parameter
- * will be the DAI's DMA data.
- * @dma_dev: If set, request DMA channel on this device rather than the DAI
- * device.
- * @chan_names: If set, these custom DMA channel names will be requested at
- * registration time.
- * @pcm_hardware: snd_pcm_hardware struct to be used for the PCM.
- * @prealloc_buffer_size: Size of the preallocated audio buffer.
- *
- * Note: If both compat_request_channel and compat_filter_fn are set
- * compat_request_channel will be used to request the channel and
- * compat_filter_fn will be ignored. Otherwise the channel will be requested
- * using dma_request_channel with compat_filter_fn as the filter function.
- */
-struct snd_dmaengine_pcm_config {
- int (*prepare_slave_config)(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *params,
- struct dma_slave_config *slave_config);
- struct dma_chan *(*compat_request_channel)(
- struct snd_soc_pcm_runtime *rtd,
- struct snd_pcm_substream *substream);
- int (*process)(struct snd_pcm_substream *substream,
- int channel, unsigned long hwoff,
- void *buf, unsigned long bytes);
- dma_filter_fn compat_filter_fn;
- struct device *dma_dev;
- const char *chan_names[SNDRV_PCM_STREAM_LAST + 1];
-
- const struct snd_pcm_hardware *pcm_hardware;
- unsigned int prealloc_buffer_size;
-};
-
-int snd_dmaengine_pcm_register(struct device *dev,
- const struct snd_dmaengine_pcm_config *config,
- unsigned int flags);
-void snd_dmaengine_pcm_unregister(struct device *dev);
-
-int devm_snd_dmaengine_pcm_register(struct device *dev,
- const struct snd_dmaengine_pcm_config *config,
- unsigned int flags);
-
-int snd_dmaengine_pcm_prepare_slave_config(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *params,
- struct dma_slave_config *slave_config);
-
-#define SND_DMAENGINE_PCM_DRV_NAME "snd_dmaengine_pcm"
-
-#endif