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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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e145e9af23
Define system-agnostic probe compress flow which serves as a base for actual, hardware-dependent implementations. As per firmware spec, maximum of one extraction stream is allowed, while for injection, there can be plenty. Apart from probe_pointer, all probe compress operations are mandatory. Copy operation is defined as unified as its flow should be shared across all SOF systems. Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com> Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20200218143924.10565-6-cezary.rojewski@intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
142 lines
3.6 KiB
C
142 lines
3.6 KiB
C
// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
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//
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// This file is provided under a dual BSD/GPLv2 license. When using or
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// redistributing this file, you may do so under either license.
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//
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// Copyright(c) 2019-2020 Intel Corporation. All rights reserved.
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//
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// Author: Cezary Rojewski <cezary.rojewski@intel.com>
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//
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#include <sound/soc.h>
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#include "compress.h"
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#include "ops.h"
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#include "probe.h"
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int sof_probe_compr_open(struct snd_compr_stream *cstream,
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struct snd_soc_dai *dai)
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{
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struct snd_sof_dev *sdev =
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snd_soc_component_get_drvdata(dai->component);
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int ret;
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ret = snd_sof_probe_compr_assign(sdev, cstream, dai);
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if (ret < 0) {
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dev_err(dai->dev, "Failed to assign probe stream: %d\n", ret);
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return ret;
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}
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sdev->extractor_stream_tag = ret;
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return 0;
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}
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EXPORT_SYMBOL(sof_probe_compr_open);
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int sof_probe_compr_free(struct snd_compr_stream *cstream,
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struct snd_soc_dai *dai)
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{
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struct snd_sof_dev *sdev =
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snd_soc_component_get_drvdata(dai->component);
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struct sof_probe_point_desc *desc;
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size_t num_desc;
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int i, ret;
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/* disconnect all probe points */
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ret = sof_ipc_probe_points_info(sdev, &desc, &num_desc);
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if (ret < 0) {
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dev_err(dai->dev, "Failed to get probe points: %d\n", ret);
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goto exit;
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}
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for (i = 0; i < num_desc; i++)
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sof_ipc_probe_points_remove(sdev, &desc[i].buffer_id, 1);
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kfree(desc);
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exit:
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ret = sof_ipc_probe_deinit(sdev);
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if (ret < 0)
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dev_err(dai->dev, "Failed to deinit probe: %d\n", ret);
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sdev->extractor_stream_tag = SOF_PROBE_INVALID_NODE_ID;
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snd_compr_free_pages(cstream);
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return snd_sof_probe_compr_free(sdev, cstream, dai);
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}
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EXPORT_SYMBOL(sof_probe_compr_free);
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int sof_probe_compr_set_params(struct snd_compr_stream *cstream,
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struct snd_compr_params *params, struct snd_soc_dai *dai)
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{
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struct snd_compr_runtime *rtd = cstream->runtime;
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struct snd_sof_dev *sdev =
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snd_soc_component_get_drvdata(dai->component);
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int ret;
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cstream->dma_buffer.dev.type = SNDRV_DMA_TYPE_DEV_SG;
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cstream->dma_buffer.dev.dev = sdev->dev;
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ret = snd_compr_malloc_pages(cstream, rtd->buffer_size);
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if (ret < 0)
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return ret;
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ret = snd_sof_probe_compr_set_params(sdev, cstream, params, dai);
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if (ret < 0)
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return ret;
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ret = sof_ipc_probe_init(sdev, sdev->extractor_stream_tag,
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rtd->dma_bytes);
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if (ret < 0) {
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dev_err(dai->dev, "Failed to init probe: %d\n", ret);
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return ret;
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}
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return 0;
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}
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EXPORT_SYMBOL(sof_probe_compr_set_params);
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int sof_probe_compr_trigger(struct snd_compr_stream *cstream, int cmd,
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struct snd_soc_dai *dai)
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{
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struct snd_sof_dev *sdev =
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snd_soc_component_get_drvdata(dai->component);
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return snd_sof_probe_compr_trigger(sdev, cstream, cmd, dai);
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}
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EXPORT_SYMBOL(sof_probe_compr_trigger);
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int sof_probe_compr_pointer(struct snd_compr_stream *cstream,
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struct snd_compr_tstamp *tstamp, struct snd_soc_dai *dai)
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{
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struct snd_sof_dev *sdev =
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snd_soc_component_get_drvdata(dai->component);
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return snd_sof_probe_compr_pointer(sdev, cstream, tstamp, dai);
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}
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EXPORT_SYMBOL(sof_probe_compr_pointer);
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int sof_probe_compr_copy(struct snd_compr_stream *cstream,
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char __user *buf, size_t count)
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{
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struct snd_compr_runtime *rtd = cstream->runtime;
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unsigned int offset, n;
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void *ptr;
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int ret;
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if (count > rtd->buffer_size)
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count = rtd->buffer_size;
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div_u64_rem(rtd->total_bytes_transferred, rtd->buffer_size, &offset);
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ptr = rtd->dma_area + offset;
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n = rtd->buffer_size - offset;
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if (count < n) {
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ret = copy_to_user(buf, ptr, count);
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} else {
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ret = copy_to_user(buf, ptr, n);
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ret += copy_to_user(buf + n, rtd->dma_area, count - n);
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}
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if (ret)
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return count - ret;
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return count;
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}
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EXPORT_SYMBOL(sof_probe_compr_copy);
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