1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) 2 // 3 // This file is provided under a dual BSD/GPLv2 license. When using or 4 // redistributing this file, you may do so under either license. 5 // 6 // Copyright(c) 2019-2020 Intel Corporation. All rights reserved. 7 // 8 // Author: Cezary Rojewski <cezary.rojewski@intel.com> 9 // 10 11 #include <sound/soc.h> 12 #include "compress.h" 13 #include "ops.h" 14 #include "probe.h" 15 16 struct snd_compress_ops sof_probe_compressed_ops = { 17 .copy = sof_probe_compr_copy, 18 }; 19 EXPORT_SYMBOL(sof_probe_compressed_ops); 20 21 int sof_probe_compr_open(struct snd_compr_stream *cstream, 22 struct snd_soc_dai *dai) 23 { 24 struct snd_sof_dev *sdev = 25 snd_soc_component_get_drvdata(dai->component); 26 int ret; 27 28 ret = snd_sof_probe_compr_assign(sdev, cstream, dai); 29 if (ret < 0) { 30 dev_err(dai->dev, "Failed to assign probe stream: %d\n", ret); 31 return ret; 32 } 33 34 sdev->extractor_stream_tag = ret; 35 return 0; 36 } 37 EXPORT_SYMBOL(sof_probe_compr_open); 38 39 int sof_probe_compr_free(struct snd_compr_stream *cstream, 40 struct snd_soc_dai *dai) 41 { 42 struct snd_sof_dev *sdev = 43 snd_soc_component_get_drvdata(dai->component); 44 struct sof_probe_point_desc *desc; 45 size_t num_desc; 46 int i, ret; 47 48 /* disconnect all probe points */ 49 ret = sof_ipc_probe_points_info(sdev, &desc, &num_desc); 50 if (ret < 0) { 51 dev_err(dai->dev, "Failed to get probe points: %d\n", ret); 52 goto exit; 53 } 54 55 for (i = 0; i < num_desc; i++) 56 sof_ipc_probe_points_remove(sdev, &desc[i].buffer_id, 1); 57 kfree(desc); 58 59 exit: 60 ret = sof_ipc_probe_deinit(sdev); 61 if (ret < 0) 62 dev_err(dai->dev, "Failed to deinit probe: %d\n", ret); 63 64 sdev->extractor_stream_tag = SOF_PROBE_INVALID_NODE_ID; 65 snd_compr_free_pages(cstream); 66 67 return snd_sof_probe_compr_free(sdev, cstream, dai); 68 } 69 EXPORT_SYMBOL(sof_probe_compr_free); 70 71 int sof_probe_compr_set_params(struct snd_compr_stream *cstream, 72 struct snd_compr_params *params, struct snd_soc_dai *dai) 73 { 74 struct snd_compr_runtime *rtd = cstream->runtime; 75 struct snd_sof_dev *sdev = 76 snd_soc_component_get_drvdata(dai->component); 77 int ret; 78 79 cstream->dma_buffer.dev.type = SNDRV_DMA_TYPE_DEV_SG; 80 cstream->dma_buffer.dev.dev = sdev->dev; 81 ret = snd_compr_malloc_pages(cstream, rtd->buffer_size); 82 if (ret < 0) 83 return ret; 84 85 ret = snd_sof_probe_compr_set_params(sdev, cstream, params, dai); 86 if (ret < 0) 87 return ret; 88 89 ret = sof_ipc_probe_init(sdev, sdev->extractor_stream_tag, 90 rtd->dma_bytes); 91 if (ret < 0) { 92 dev_err(dai->dev, "Failed to init probe: %d\n", ret); 93 return ret; 94 } 95 96 return 0; 97 } 98 EXPORT_SYMBOL(sof_probe_compr_set_params); 99 100 int sof_probe_compr_trigger(struct snd_compr_stream *cstream, int cmd, 101 struct snd_soc_dai *dai) 102 { 103 struct snd_sof_dev *sdev = 104 snd_soc_component_get_drvdata(dai->component); 105 106 return snd_sof_probe_compr_trigger(sdev, cstream, cmd, dai); 107 } 108 EXPORT_SYMBOL(sof_probe_compr_trigger); 109 110 int sof_probe_compr_pointer(struct snd_compr_stream *cstream, 111 struct snd_compr_tstamp *tstamp, struct snd_soc_dai *dai) 112 { 113 struct snd_sof_dev *sdev = 114 snd_soc_component_get_drvdata(dai->component); 115 116 return snd_sof_probe_compr_pointer(sdev, cstream, tstamp, dai); 117 } 118 EXPORT_SYMBOL(sof_probe_compr_pointer); 119 120 int sof_probe_compr_copy(struct snd_soc_component *component, 121 struct snd_compr_stream *cstream, 122 char __user *buf, size_t count) 123 { 124 struct snd_compr_runtime *rtd = cstream->runtime; 125 unsigned int offset, n; 126 void *ptr; 127 int ret; 128 129 if (count > rtd->buffer_size) 130 count = rtd->buffer_size; 131 132 div_u64_rem(rtd->total_bytes_transferred, rtd->buffer_size, &offset); 133 ptr = rtd->dma_area + offset; 134 n = rtd->buffer_size - offset; 135 136 if (count < n) { 137 ret = copy_to_user(buf, ptr, count); 138 } else { 139 ret = copy_to_user(buf, ptr, n); 140 ret += copy_to_user(buf + n, rtd->dma_area, count - n); 141 } 142 143 if (ret) 144 return count - ret; 145 return count; 146 } 147 EXPORT_SYMBOL(sof_probe_compr_copy); 148