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