diff options
Diffstat (limited to 'snd-alpx/core/RedHat')
| -rwxr-xr-x | snd-alpx/core/RedHat/4.18/dmaengine_pcm.h | 180 | ||||
| -rwxr-xr-x | snd-alpx/core/RedHat/4.18/pcm_dmaengine.c | 473 | ||||
| -rwxr-xr-x | snd-alpx/core/RedHat/5.14/dmaengine_pcm.h | 180 | ||||
| -rwxr-xr-x | snd-alpx/core/RedHat/5.14/pcm_dmaengine.c | 473 |
4 files changed, 0 insertions, 1306 deletions
diff --git a/snd-alpx/core/RedHat/4.18/dmaengine_pcm.h b/snd-alpx/core/RedHat/4.18/dmaengine_pcm.h deleted file mode 100755 index 2df54cf..0000000 --- a/snd-alpx/core/RedHat/4.18/dmaengine_pcm.h +++ /dev/null @@ -1,180 +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 - * - * Return: DMA transfer direction - */ -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. - * @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 - * @peripheral_config: peripheral configuration for programming peripheral - * for dmaengine transfer - * @peripheral_size: peripheral configuration buffer size - */ -struct snd_dmaengine_dai_dma_data { - dma_addr_t addr; - enum dma_slave_buswidth addr_width; - u32 maxburst; - void *filter_data; - const char *chan_name; - unsigned int fifo_size; - unsigned int flags; - void *peripheral_config; - size_t peripheral_size; -}; - -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" - -struct dmaengine_pcm { - struct dma_chan *chan[SNDRV_PCM_STREAM_LAST + 1]; - const struct snd_dmaengine_pcm_config *config; - struct snd_soc_component component; - unsigned int flags; -}; - -static inline struct dmaengine_pcm *soc_component_to_pcm(struct snd_soc_component *p) -{ - return container_of(p, struct dmaengine_pcm, component); -} -#endif diff --git a/snd-alpx/core/RedHat/4.18/pcm_dmaengine.c b/snd-alpx/core/RedHat/4.18/pcm_dmaengine.c deleted file mode 100755 index 494ec0c..0000000 --- a/snd-alpx/core/RedHat/4.18/pcm_dmaengine.c +++ /dev/null @@ -1,473 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * Copyright (C) 2012, Analog Devices Inc. - * Author: Lars-Peter Clausen <lars@metafoo.de> - * - * Based on: - * imx-pcm-dma-mx2.c, Copyright 2009 Sascha Hauer <s.hauer@pengutronix.de> - * mxs-pcm.c, Copyright (C) 2011 Freescale Semiconductor, Inc. - * ep93xx-pcm.c, Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org> - * Copyright (C) 2006 Applied Data Systems - */ -#include <linux/module.h> -#include <linux/init.h> -#include <linux/dmaengine.h> -#include <linux/slab.h> -#include <sound/pcm.h> -#include <sound/pcm_params.h> -#include <sound/soc.h> - -#include <sound/dmaengine_pcm.h> - -struct dmaengine_pcm_runtime_data { - struct dma_chan *dma_chan; - dma_cookie_t cookie; - - unsigned int pos; -}; - -static inline struct dmaengine_pcm_runtime_data *substream_to_prtd( - const struct snd_pcm_substream *substream) -{ - return substream->runtime->private_data; -} - -struct dma_chan *snd_dmaengine_pcm_get_chan(struct snd_pcm_substream *substream) -{ - struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream); - - return prtd->dma_chan; -} -EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_get_chan); - -/** - * snd_hwparams_to_dma_slave_config - Convert hw_params to dma_slave_config - * @substream: PCM substream - * @params: hw_params - * @slave_config: DMA slave config - * - * This function can be used to initialize a dma_slave_config from a substream - * and hw_params in a dmaengine based PCM driver implementation. - * - * Return: zero if successful, or a negative error code - */ -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) -{ - enum dma_slave_buswidth buswidth; - int bits; - - bits = params_physical_width(params); - if (bits < 8 || bits > 64) - return -EINVAL; - else if (bits == 8) - buswidth = DMA_SLAVE_BUSWIDTH_1_BYTE; - else if (bits == 16) - buswidth = DMA_SLAVE_BUSWIDTH_2_BYTES; - else if (bits == 24) - buswidth = DMA_SLAVE_BUSWIDTH_3_BYTES; - else if (bits <= 32) - buswidth = DMA_SLAVE_BUSWIDTH_4_BYTES; - else - buswidth = DMA_SLAVE_BUSWIDTH_8_BYTES; - - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { - slave_config->direction = DMA_MEM_TO_DEV; - slave_config->dst_addr_width = buswidth; - } else { - slave_config->direction = DMA_DEV_TO_MEM; - slave_config->src_addr_width = buswidth; - } - - slave_config->device_fc = false; - - return 0; -} -EXPORT_SYMBOL_GPL(snd_hwparams_to_dma_slave_config); - -/** - * snd_dmaengine_pcm_set_config_from_dai_data() - Initializes a dma slave config - * using DAI DMA data. - * @substream: PCM substream - * @dma_data: DAI DMA data - * @slave_config: DMA slave configuration - * - * Initializes the {dst,src}_addr, {dst,src}_maxburst, {dst,src}_addr_width - * fields of the DMA slave config from the same fields of the DAI DMA - * data struct. The src and dst fields will be initialized depending on the - * direction of the substream. If the substream is a playback stream the dst - * fields will be initialized, if it is a capture stream the src fields will be - * initialized. The {dst,src}_addr_width field will only be initialized if the - * SND_DMAENGINE_PCM_DAI_FLAG_PACK flag is set or if the addr_width field of - * the DAI DMA data struct is not equal to DMA_SLAVE_BUSWIDTH_UNDEFINED. If - * both conditions are met the latter takes priority. - */ -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 *slave_config) -{ - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { - slave_config->dst_addr = dma_data->addr; - slave_config->dst_maxburst = dma_data->maxburst; - if (dma_data->flags & SND_DMAENGINE_PCM_DAI_FLAG_PACK) - slave_config->dst_addr_width = - DMA_SLAVE_BUSWIDTH_UNDEFINED; - if (dma_data->addr_width != DMA_SLAVE_BUSWIDTH_UNDEFINED) - slave_config->dst_addr_width = dma_data->addr_width; - } else { - slave_config->src_addr = dma_data->addr; - slave_config->src_maxburst = dma_data->maxburst; - if (dma_data->flags & SND_DMAENGINE_PCM_DAI_FLAG_PACK) - slave_config->src_addr_width = - DMA_SLAVE_BUSWIDTH_UNDEFINED; - if (dma_data->addr_width != DMA_SLAVE_BUSWIDTH_UNDEFINED) - slave_config->src_addr_width = dma_data->addr_width; - } - - slave_config->peripheral_config = dma_data->peripheral_config; - slave_config->peripheral_size = dma_data->peripheral_size; -} -EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_set_config_from_dai_data); - -static void dmaengine_pcm_dma_complete(void *arg) -{ - unsigned int new_pos; - struct snd_pcm_substream *substream = arg; - struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream); - - new_pos = prtd->pos + snd_pcm_lib_period_bytes(substream); - if (new_pos >= snd_pcm_lib_buffer_bytes(substream)) - new_pos = 0; - prtd->pos = new_pos; - - snd_pcm_period_elapsed(substream); -} - -static int dmaengine_pcm_prepare_and_submit(struct snd_pcm_substream *substream) -{ - struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream); - struct dma_chan *chan = prtd->dma_chan; - struct dma_async_tx_descriptor *desc; - enum dma_transfer_direction direction; - unsigned long flags = DMA_CTRL_ACK; - - direction = snd_pcm_substream_to_dma_direction(substream); - - if (!substream->runtime->no_period_wakeup) - flags |= DMA_PREP_INTERRUPT; - - prtd->pos = 0; - desc = dmaengine_prep_dma_cyclic(chan, - substream->runtime->dma_addr, - snd_pcm_lib_buffer_bytes(substream), - snd_pcm_lib_period_bytes(substream), direction, flags); - - if (!desc) - return -ENOMEM; - - desc->callback = dmaengine_pcm_dma_complete; - desc->callback_param = substream; - prtd->cookie = dmaengine_submit(desc); - - return 0; -} - -/** - * snd_dmaengine_pcm_trigger - dmaengine based PCM trigger implementation - * @substream: PCM substream - * @cmd: Trigger command - * - * This function can be used as the PCM trigger callback for dmaengine based PCM - * driver implementations. - * - * Return: 0 on success, a negative error code otherwise - */ -int snd_dmaengine_pcm_trigger(struct snd_pcm_substream *substream, int cmd) -{ - struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream); - struct snd_pcm_runtime *runtime = substream->runtime; - int ret; - - switch (cmd) { - case SNDRV_PCM_TRIGGER_START: - ret = dmaengine_pcm_prepare_and_submit(substream); - if (ret) - return ret; - dma_async_issue_pending(prtd->dma_chan); - break; - case SNDRV_PCM_TRIGGER_RESUME: - case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: - dmaengine_resume(prtd->dma_chan); - break; - case SNDRV_PCM_TRIGGER_SUSPEND: - if (runtime->info & SNDRV_PCM_INFO_PAUSE) - dmaengine_pause(prtd->dma_chan); - else - dmaengine_terminate_async(prtd->dma_chan); - break; - case SNDRV_PCM_TRIGGER_PAUSE_PUSH: - dmaengine_pause(prtd->dma_chan); - break; - case SNDRV_PCM_TRIGGER_STOP: - dmaengine_terminate_async(prtd->dma_chan); - break; - default: - return -EINVAL; - } - - return 0; -} -EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_trigger); - -/** - * snd_dmaengine_pcm_pointer_no_residue - dmaengine based PCM pointer implementation - * @substream: PCM substream - * - * This function is deprecated and should not be used by new drivers, as its - * results may be unreliable. - * - * Return: PCM position in frames - */ -snd_pcm_uframes_t snd_dmaengine_pcm_pointer_no_residue(struct snd_pcm_substream *substream) -{ - struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream); - return bytes_to_frames(substream->runtime, prtd->pos); -} -EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_pointer_no_residue); - -/** - * snd_dmaengine_pcm_pointer - dmaengine based PCM pointer implementation - * @substream: PCM substream - * - * This function can be used as the PCM pointer callback for dmaengine based PCM - * driver implementations. - * - * Return: PCM position in frames - */ -snd_pcm_uframes_t snd_dmaengine_pcm_pointer(struct snd_pcm_substream *substream) -{ - struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream); - struct snd_pcm_runtime *runtime = substream->runtime; - struct dma_tx_state state; - enum dma_status status; - unsigned int buf_size; - unsigned int pos = 0; - - status = dmaengine_tx_status(prtd->dma_chan, prtd->cookie, &state); - if (status == DMA_IN_PROGRESS || status == DMA_PAUSED) { - buf_size = snd_pcm_lib_buffer_bytes(substream); - if (state.residue > 0 && state.residue <= buf_size) - pos = buf_size - state.residue; - - runtime->delay = bytes_to_frames(runtime, - state.in_flight_bytes); - } - - return bytes_to_frames(runtime, pos); -} -EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_pointer); - -/** - * snd_dmaengine_pcm_request_channel - Request channel for the dmaengine PCM - * @filter_fn: Filter function used to request the DMA channel - * @filter_data: Data passed to the DMA filter function - * - * This function request a DMA channel for usage with dmaengine PCM. - * - * Return: NULL or the requested DMA channel - */ -struct dma_chan *snd_dmaengine_pcm_request_channel(dma_filter_fn filter_fn, - void *filter_data) -{ - dma_cap_mask_t mask; - - dma_cap_zero(mask); - dma_cap_set(DMA_SLAVE, mask); - dma_cap_set(DMA_CYCLIC, mask); - - return dma_request_channel(mask, filter_fn, filter_data); -} -EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_request_channel); - -/** - * snd_dmaengine_pcm_open - Open a dmaengine based PCM substream - * @substream: PCM substream - * @chan: DMA channel to use for data transfers - * - * The function should usually be called from the pcm open callback. Note that - * this function will use private_data field of the substream's runtime. So it - * is not available to your pcm driver implementation. - * - * Return: 0 on success, a negative error code otherwise - */ -int snd_dmaengine_pcm_open(struct snd_pcm_substream *substream, - struct dma_chan *chan) -{ - struct dmaengine_pcm_runtime_data *prtd; - int ret; - - if (!chan) - return -ENXIO; - - ret = snd_pcm_hw_constraint_integer(substream->runtime, - SNDRV_PCM_HW_PARAM_PERIODS); - if (ret < 0) - return ret; - - prtd = kzalloc(sizeof(*prtd), GFP_KERNEL); - if (!prtd) - return -ENOMEM; - - prtd->dma_chan = chan; - - substream->runtime->private_data = prtd; - - return 0; -} -EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_open); - -/** - * snd_dmaengine_pcm_open_request_chan - Open a dmaengine based PCM substream and request channel - * @substream: PCM substream - * @filter_fn: Filter function used to request the DMA channel - * @filter_data: Data passed to the DMA filter function - * - * This function will request a DMA channel using the passed filter function and - * data. The function should usually be called from the pcm open callback. Note - * that this function will use private_data field of the substream's runtime. So - * it is not available to your pcm driver implementation. - * - * Return: 0 on success, a negative error code otherwise - */ -int snd_dmaengine_pcm_open_request_chan(struct snd_pcm_substream *substream, - dma_filter_fn filter_fn, void *filter_data) -{ - return snd_dmaengine_pcm_open(substream, - snd_dmaengine_pcm_request_channel(filter_fn, filter_data)); -} -EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_open_request_chan); - -/** - * snd_dmaengine_pcm_close - Close a dmaengine based PCM substream - * @substream: PCM substream - * - * Return: 0 on success, a negative error code otherwise - */ -int snd_dmaengine_pcm_close(struct snd_pcm_substream *substream) -{ - struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream); - - dmaengine_synchronize(prtd->dma_chan); - kfree(prtd); - - return 0; -} -EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_close); - -/** - * snd_dmaengine_pcm_close_release_chan - Close a dmaengine based PCM - * substream and release channel - * @substream: PCM substream - * - * Releases the DMA channel associated with the PCM substream. - * - * Return: zero if successful, or a negative error code - */ -int snd_dmaengine_pcm_close_release_chan(struct snd_pcm_substream *substream) -{ - struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream); - - dmaengine_synchronize(prtd->dma_chan); - dma_release_channel(prtd->dma_chan); - kfree(prtd); - - return 0; -} -EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_close_release_chan); - -/** - * snd_dmaengine_pcm_refine_runtime_hwparams - Refine runtime hw params - * @substream: PCM substream - * @dma_data: DAI DMA data - * @hw: PCM hw params - * @chan: DMA channel to use for data transfers - * - * This function will query DMA capability, then refine the pcm hardware - * parameters. - * - * Return: 0 on success, a negative error code otherwise - */ -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) -{ - struct dma_slave_caps dma_caps; - u32 addr_widths = BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) | - BIT(DMA_SLAVE_BUSWIDTH_2_BYTES) | - BIT(DMA_SLAVE_BUSWIDTH_4_BYTES); - snd_pcm_format_t i; - int ret = 0; - - if (!hw || !chan || !dma_data) - return -EINVAL; - - ret = dma_get_slave_caps(chan, &dma_caps); - if (ret == 0) { - if (dma_caps.cmd_pause && dma_caps.cmd_resume) - hw->info |= SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME; - if (dma_caps.residue_granularity <= DMA_RESIDUE_GRANULARITY_SEGMENT) - hw->info |= SNDRV_PCM_INFO_BATCH; - - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) - addr_widths = dma_caps.dst_addr_widths; - else - addr_widths = dma_caps.src_addr_widths; - } - - /* - * If SND_DMAENGINE_PCM_DAI_FLAG_PACK is set keep - * hw.formats set to 0, meaning no restrictions are in place. - * In this case it's the responsibility of the DAI driver to - * provide the supported format information. - */ - if (!(dma_data->flags & SND_DMAENGINE_PCM_DAI_FLAG_PACK)) - /* - * Prepare formats mask for valid/allowed sample types. If the - * dma does not have support for the given physical word size, - * it needs to be masked out so user space can not use the - * format which produces corrupted audio. - * In case the dma driver does not implement the slave_caps the - * default assumption is that it supports 1, 2 and 4 bytes - * widths. - */ - pcm_for_each_format(i) { - int bits = snd_pcm_format_physical_width(i); - - /* - * Enable only samples with DMA supported physical - * widths - */ - switch (bits) { - case 8: - case 16: - case 24: - case 32: - case 64: - if (addr_widths & (1 << (bits / 8))) - hw->formats |= pcm_format_to_bits(i); - break; - default: - /* Unsupported types */ - break; - } - } - - return ret; -} -EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_refine_runtime_hwparams); - -MODULE_LICENSE("GPL"); diff --git a/snd-alpx/core/RedHat/5.14/dmaengine_pcm.h b/snd-alpx/core/RedHat/5.14/dmaengine_pcm.h deleted file mode 100755 index 2df54cf..0000000 --- a/snd-alpx/core/RedHat/5.14/dmaengine_pcm.h +++ /dev/null @@ -1,180 +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 - * - * Return: DMA transfer direction - */ -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. - * @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 - * @peripheral_config: peripheral configuration for programming peripheral - * for dmaengine transfer - * @peripheral_size: peripheral configuration buffer size - */ -struct snd_dmaengine_dai_dma_data { - dma_addr_t addr; - enum dma_slave_buswidth addr_width; - u32 maxburst; - void *filter_data; - const char *chan_name; - unsigned int fifo_size; - unsigned int flags; - void *peripheral_config; - size_t peripheral_size; -}; - -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" - -struct dmaengine_pcm { - struct dma_chan *chan[SNDRV_PCM_STREAM_LAST + 1]; - const struct snd_dmaengine_pcm_config *config; - struct snd_soc_component component; - unsigned int flags; -}; - -static inline struct dmaengine_pcm *soc_component_to_pcm(struct snd_soc_component *p) -{ - return container_of(p, struct dmaengine_pcm, component); -} -#endif diff --git a/snd-alpx/core/RedHat/5.14/pcm_dmaengine.c b/snd-alpx/core/RedHat/5.14/pcm_dmaengine.c deleted file mode 100755 index 494ec0c..0000000 --- a/snd-alpx/core/RedHat/5.14/pcm_dmaengine.c +++ /dev/null @@ -1,473 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * Copyright (C) 2012, Analog Devices Inc. - * Author: Lars-Peter Clausen <lars@metafoo.de> - * - * Based on: - * imx-pcm-dma-mx2.c, Copyright 2009 Sascha Hauer <s.hauer@pengutronix.de> - * mxs-pcm.c, Copyright (C) 2011 Freescale Semiconductor, Inc. - * ep93xx-pcm.c, Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org> - * Copyright (C) 2006 Applied Data Systems - */ -#include <linux/module.h> -#include <linux/init.h> -#include <linux/dmaengine.h> -#include <linux/slab.h> -#include <sound/pcm.h> -#include <sound/pcm_params.h> -#include <sound/soc.h> - -#include <sound/dmaengine_pcm.h> - -struct dmaengine_pcm_runtime_data { - struct dma_chan *dma_chan; - dma_cookie_t cookie; - - unsigned int pos; -}; - -static inline struct dmaengine_pcm_runtime_data *substream_to_prtd( - const struct snd_pcm_substream *substream) -{ - return substream->runtime->private_data; -} - -struct dma_chan *snd_dmaengine_pcm_get_chan(struct snd_pcm_substream *substream) -{ - struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream); - - return prtd->dma_chan; -} -EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_get_chan); - -/** - * snd_hwparams_to_dma_slave_config - Convert hw_params to dma_slave_config - * @substream: PCM substream - * @params: hw_params - * @slave_config: DMA slave config - * - * This function can be used to initialize a dma_slave_config from a substream - * and hw_params in a dmaengine based PCM driver implementation. - * - * Return: zero if successful, or a negative error code - */ -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) -{ - enum dma_slave_buswidth buswidth; - int bits; - - bits = params_physical_width(params); - if (bits < 8 || bits > 64) - return -EINVAL; - else if (bits == 8) - buswidth = DMA_SLAVE_BUSWIDTH_1_BYTE; - else if (bits == 16) - buswidth = DMA_SLAVE_BUSWIDTH_2_BYTES; - else if (bits == 24) - buswidth = DMA_SLAVE_BUSWIDTH_3_BYTES; - else if (bits <= 32) - buswidth = DMA_SLAVE_BUSWIDTH_4_BYTES; - else - buswidth = DMA_SLAVE_BUSWIDTH_8_BYTES; - - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { - slave_config->direction = DMA_MEM_TO_DEV; - slave_config->dst_addr_width = buswidth; - } else { - slave_config->direction = DMA_DEV_TO_MEM; - slave_config->src_addr_width = buswidth; - } - - slave_config->device_fc = false; - - return 0; -} -EXPORT_SYMBOL_GPL(snd_hwparams_to_dma_slave_config); - -/** - * snd_dmaengine_pcm_set_config_from_dai_data() - Initializes a dma slave config - * using DAI DMA data. - * @substream: PCM substream - * @dma_data: DAI DMA data - * @slave_config: DMA slave configuration - * - * Initializes the {dst,src}_addr, {dst,src}_maxburst, {dst,src}_addr_width - * fields of the DMA slave config from the same fields of the DAI DMA - * data struct. The src and dst fields will be initialized depending on the - * direction of the substream. If the substream is a playback stream the dst - * fields will be initialized, if it is a capture stream the src fields will be - * initialized. The {dst,src}_addr_width field will only be initialized if the - * SND_DMAENGINE_PCM_DAI_FLAG_PACK flag is set or if the addr_width field of - * the DAI DMA data struct is not equal to DMA_SLAVE_BUSWIDTH_UNDEFINED. If - * both conditions are met the latter takes priority. - */ -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 *slave_config) -{ - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { - slave_config->dst_addr = dma_data->addr; - slave_config->dst_maxburst = dma_data->maxburst; - if (dma_data->flags & SND_DMAENGINE_PCM_DAI_FLAG_PACK) - slave_config->dst_addr_width = - DMA_SLAVE_BUSWIDTH_UNDEFINED; - if (dma_data->addr_width != DMA_SLAVE_BUSWIDTH_UNDEFINED) - slave_config->dst_addr_width = dma_data->addr_width; - } else { - slave_config->src_addr = dma_data->addr; - slave_config->src_maxburst = dma_data->maxburst; - if (dma_data->flags & SND_DMAENGINE_PCM_DAI_FLAG_PACK) - slave_config->src_addr_width = - DMA_SLAVE_BUSWIDTH_UNDEFINED; - if (dma_data->addr_width != DMA_SLAVE_BUSWIDTH_UNDEFINED) - slave_config->src_addr_width = dma_data->addr_width; - } - - slave_config->peripheral_config = dma_data->peripheral_config; - slave_config->peripheral_size = dma_data->peripheral_size; -} -EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_set_config_from_dai_data); - -static void dmaengine_pcm_dma_complete(void *arg) -{ - unsigned int new_pos; - struct snd_pcm_substream *substream = arg; - struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream); - - new_pos = prtd->pos + snd_pcm_lib_period_bytes(substream); - if (new_pos >= snd_pcm_lib_buffer_bytes(substream)) - new_pos = 0; - prtd->pos = new_pos; - - snd_pcm_period_elapsed(substream); -} - -static int dmaengine_pcm_prepare_and_submit(struct snd_pcm_substream *substream) -{ - struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream); - struct dma_chan *chan = prtd->dma_chan; - struct dma_async_tx_descriptor *desc; - enum dma_transfer_direction direction; - unsigned long flags = DMA_CTRL_ACK; - - direction = snd_pcm_substream_to_dma_direction(substream); - - if (!substream->runtime->no_period_wakeup) - flags |= DMA_PREP_INTERRUPT; - - prtd->pos = 0; - desc = dmaengine_prep_dma_cyclic(chan, - substream->runtime->dma_addr, - snd_pcm_lib_buffer_bytes(substream), - snd_pcm_lib_period_bytes(substream), direction, flags); - - if (!desc) - return -ENOMEM; - - desc->callback = dmaengine_pcm_dma_complete; - desc->callback_param = substream; - prtd->cookie = dmaengine_submit(desc); - - return 0; -} - -/** - * snd_dmaengine_pcm_trigger - dmaengine based PCM trigger implementation - * @substream: PCM substream - * @cmd: Trigger command - * - * This function can be used as the PCM trigger callback for dmaengine based PCM - * driver implementations. - * - * Return: 0 on success, a negative error code otherwise - */ -int snd_dmaengine_pcm_trigger(struct snd_pcm_substream *substream, int cmd) -{ - struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream); - struct snd_pcm_runtime *runtime = substream->runtime; - int ret; - - switch (cmd) { - case SNDRV_PCM_TRIGGER_START: - ret = dmaengine_pcm_prepare_and_submit(substream); - if (ret) - return ret; - dma_async_issue_pending(prtd->dma_chan); - break; - case SNDRV_PCM_TRIGGER_RESUME: - case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: - dmaengine_resume(prtd->dma_chan); - break; - case SNDRV_PCM_TRIGGER_SUSPEND: - if (runtime->info & SNDRV_PCM_INFO_PAUSE) - dmaengine_pause(prtd->dma_chan); - else - dmaengine_terminate_async(prtd->dma_chan); - break; - case SNDRV_PCM_TRIGGER_PAUSE_PUSH: - dmaengine_pause(prtd->dma_chan); - break; - case SNDRV_PCM_TRIGGER_STOP: - dmaengine_terminate_async(prtd->dma_chan); - break; - default: - return -EINVAL; - } - - return 0; -} -EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_trigger); - -/** - * snd_dmaengine_pcm_pointer_no_residue - dmaengine based PCM pointer implementation - * @substream: PCM substream - * - * This function is deprecated and should not be used by new drivers, as its - * results may be unreliable. - * - * Return: PCM position in frames - */ -snd_pcm_uframes_t snd_dmaengine_pcm_pointer_no_residue(struct snd_pcm_substream *substream) -{ - struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream); - return bytes_to_frames(substream->runtime, prtd->pos); -} -EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_pointer_no_residue); - -/** - * snd_dmaengine_pcm_pointer - dmaengine based PCM pointer implementation - * @substream: PCM substream - * - * This function can be used as the PCM pointer callback for dmaengine based PCM - * driver implementations. - * - * Return: PCM position in frames - */ -snd_pcm_uframes_t snd_dmaengine_pcm_pointer(struct snd_pcm_substream *substream) -{ - struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream); - struct snd_pcm_runtime *runtime = substream->runtime; - struct dma_tx_state state; - enum dma_status status; - unsigned int buf_size; - unsigned int pos = 0; - - status = dmaengine_tx_status(prtd->dma_chan, prtd->cookie, &state); - if (status == DMA_IN_PROGRESS || status == DMA_PAUSED) { - buf_size = snd_pcm_lib_buffer_bytes(substream); - if (state.residue > 0 && state.residue <= buf_size) - pos = buf_size - state.residue; - - runtime->delay = bytes_to_frames(runtime, - state.in_flight_bytes); - } - - return bytes_to_frames(runtime, pos); -} -EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_pointer); - -/** - * snd_dmaengine_pcm_request_channel - Request channel for the dmaengine PCM - * @filter_fn: Filter function used to request the DMA channel - * @filter_data: Data passed to the DMA filter function - * - * This function request a DMA channel for usage with dmaengine PCM. - * - * Return: NULL or the requested DMA channel - */ -struct dma_chan *snd_dmaengine_pcm_request_channel(dma_filter_fn filter_fn, - void *filter_data) -{ - dma_cap_mask_t mask; - - dma_cap_zero(mask); - dma_cap_set(DMA_SLAVE, mask); - dma_cap_set(DMA_CYCLIC, mask); - - return dma_request_channel(mask, filter_fn, filter_data); -} -EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_request_channel); - -/** - * snd_dmaengine_pcm_open - Open a dmaengine based PCM substream - * @substream: PCM substream - * @chan: DMA channel to use for data transfers - * - * The function should usually be called from the pcm open callback. Note that - * this function will use private_data field of the substream's runtime. So it - * is not available to your pcm driver implementation. - * - * Return: 0 on success, a negative error code otherwise - */ -int snd_dmaengine_pcm_open(struct snd_pcm_substream *substream, - struct dma_chan *chan) -{ - struct dmaengine_pcm_runtime_data *prtd; - int ret; - - if (!chan) - return -ENXIO; - - ret = snd_pcm_hw_constraint_integer(substream->runtime, - SNDRV_PCM_HW_PARAM_PERIODS); - if (ret < 0) - return ret; - - prtd = kzalloc(sizeof(*prtd), GFP_KERNEL); - if (!prtd) - return -ENOMEM; - - prtd->dma_chan = chan; - - substream->runtime->private_data = prtd; - - return 0; -} -EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_open); - -/** - * snd_dmaengine_pcm_open_request_chan - Open a dmaengine based PCM substream and request channel - * @substream: PCM substream - * @filter_fn: Filter function used to request the DMA channel - * @filter_data: Data passed to the DMA filter function - * - * This function will request a DMA channel using the passed filter function and - * data. The function should usually be called from the pcm open callback. Note - * that this function will use private_data field of the substream's runtime. So - * it is not available to your pcm driver implementation. - * - * Return: 0 on success, a negative error code otherwise - */ -int snd_dmaengine_pcm_open_request_chan(struct snd_pcm_substream *substream, - dma_filter_fn filter_fn, void *filter_data) -{ - return snd_dmaengine_pcm_open(substream, - snd_dmaengine_pcm_request_channel(filter_fn, filter_data)); -} -EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_open_request_chan); - -/** - * snd_dmaengine_pcm_close - Close a dmaengine based PCM substream - * @substream: PCM substream - * - * Return: 0 on success, a negative error code otherwise - */ -int snd_dmaengine_pcm_close(struct snd_pcm_substream *substream) -{ - struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream); - - dmaengine_synchronize(prtd->dma_chan); - kfree(prtd); - - return 0; -} -EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_close); - -/** - * snd_dmaengine_pcm_close_release_chan - Close a dmaengine based PCM - * substream and release channel - * @substream: PCM substream - * - * Releases the DMA channel associated with the PCM substream. - * - * Return: zero if successful, or a negative error code - */ -int snd_dmaengine_pcm_close_release_chan(struct snd_pcm_substream *substream) -{ - struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream); - - dmaengine_synchronize(prtd->dma_chan); - dma_release_channel(prtd->dma_chan); - kfree(prtd); - - return 0; -} -EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_close_release_chan); - -/** - * snd_dmaengine_pcm_refine_runtime_hwparams - Refine runtime hw params - * @substream: PCM substream - * @dma_data: DAI DMA data - * @hw: PCM hw params - * @chan: DMA channel to use for data transfers - * - * This function will query DMA capability, then refine the pcm hardware - * parameters. - * - * Return: 0 on success, a negative error code otherwise - */ -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) -{ - struct dma_slave_caps dma_caps; - u32 addr_widths = BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) | - BIT(DMA_SLAVE_BUSWIDTH_2_BYTES) | - BIT(DMA_SLAVE_BUSWIDTH_4_BYTES); - snd_pcm_format_t i; - int ret = 0; - - if (!hw || !chan || !dma_data) - return -EINVAL; - - ret = dma_get_slave_caps(chan, &dma_caps); - if (ret == 0) { - if (dma_caps.cmd_pause && dma_caps.cmd_resume) - hw->info |= SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME; - if (dma_caps.residue_granularity <= DMA_RESIDUE_GRANULARITY_SEGMENT) - hw->info |= SNDRV_PCM_INFO_BATCH; - - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) - addr_widths = dma_caps.dst_addr_widths; - else - addr_widths = dma_caps.src_addr_widths; - } - - /* - * If SND_DMAENGINE_PCM_DAI_FLAG_PACK is set keep - * hw.formats set to 0, meaning no restrictions are in place. - * In this case it's the responsibility of the DAI driver to - * provide the supported format information. - */ - if (!(dma_data->flags & SND_DMAENGINE_PCM_DAI_FLAG_PACK)) - /* - * Prepare formats mask for valid/allowed sample types. If the - * dma does not have support for the given physical word size, - * it needs to be masked out so user space can not use the - * format which produces corrupted audio. - * In case the dma driver does not implement the slave_caps the - * default assumption is that it supports 1, 2 and 4 bytes - * widths. - */ - pcm_for_each_format(i) { - int bits = snd_pcm_format_physical_width(i); - - /* - * Enable only samples with DMA supported physical - * widths - */ - switch (bits) { - case 8: - case 16: - case 24: - case 32: - case 64: - if (addr_widths & (1 << (bits / 8))) - hw->formats |= pcm_format_to_bits(i); - break; - default: - /* Unsupported types */ - break; - } - } - - return ret; -} -EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_refine_runtime_hwparams); - -MODULE_LICENSE("GPL"); |