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 <[email protected]> 9 // 10 11 #include <sound/soc.h> 12 #include "compress.h" 13 #include "ops.h" 14 #include "probe.h" 15 16 static 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 33 static int sof_probe_compr_free(struct snd_compr_stream *cstream, 34 struct snd_soc_dai *dai) 35 { 36 struct snd_sof_dev *sdev = 37 snd_soc_component_get_drvdata(dai->component); 38 struct sof_probe_point_desc *desc; 39 size_t num_desc; 40 int i, ret; 41 42 /* disconnect all probe points */ 43 ret = sof_ipc_probe_points_info(sdev, &desc, &num_desc); 44 if (ret < 0) { 45 dev_err(dai->dev, "Failed to get probe points: %d\n", ret); 46 goto exit; 47 } 48 49 for (i = 0; i < num_desc; i++) 50 sof_ipc_probe_points_remove(sdev, &desc[i].buffer_id, 1); 51 kfree(desc); 52 53 exit: 54 ret = sof_ipc_probe_deinit(sdev); 55 if (ret < 0) 56 dev_err(dai->dev, "Failed to deinit probe: %d\n", ret); 57 58 sdev->extractor_stream_tag = SOF_PROBE_INVALID_NODE_ID; 59 snd_compr_free_pages(cstream); 60 61 return snd_sof_probe_compr_free(sdev, cstream, dai); 62 } 63 64 static int sof_probe_compr_set_params(struct snd_compr_stream *cstream, 65 struct snd_compr_params *params, 66 struct snd_soc_dai *dai) 67 { 68 struct snd_compr_runtime *rtd = cstream->runtime; 69 struct snd_sof_dev *sdev = 70 snd_soc_component_get_drvdata(dai->component); 71 int ret; 72 73 cstream->dma_buffer.dev.type = SNDRV_DMA_TYPE_DEV_SG; 74 cstream->dma_buffer.dev.dev = sdev->dev; 75 ret = snd_compr_malloc_pages(cstream, rtd->buffer_size); 76 if (ret < 0) 77 return ret; 78 79 ret = snd_sof_probe_compr_set_params(sdev, cstream, params, dai); 80 if (ret < 0) 81 return ret; 82 83 ret = sof_ipc_probe_init(sdev, sdev->extractor_stream_tag, 84 rtd->dma_bytes); 85 if (ret < 0) { 86 dev_err(dai->dev, "Failed to init probe: %d\n", ret); 87 return ret; 88 } 89 90 return 0; 91 } 92 93 static int sof_probe_compr_trigger(struct snd_compr_stream *cstream, int cmd, 94 struct snd_soc_dai *dai) 95 { 96 struct snd_sof_dev *sdev = 97 snd_soc_component_get_drvdata(dai->component); 98 99 return snd_sof_probe_compr_trigger(sdev, cstream, cmd, dai); 100 } 101 102 static int sof_probe_compr_pointer(struct snd_compr_stream *cstream, 103 struct snd_compr_tstamp *tstamp, 104 struct snd_soc_dai *dai) 105 { 106 struct snd_sof_dev *sdev = 107 snd_soc_component_get_drvdata(dai->component); 108 109 return snd_sof_probe_compr_pointer(sdev, cstream, tstamp, dai); 110 } 111 112 struct snd_soc_cdai_ops sof_probe_compr_ops = { 113 .startup = sof_probe_compr_open, 114 .shutdown = sof_probe_compr_free, 115 .set_params = sof_probe_compr_set_params, 116 .trigger = sof_probe_compr_trigger, 117 .pointer = sof_probe_compr_pointer, 118 }; 119 EXPORT_SYMBOL(sof_probe_compr_ops); 120 121 static int sof_probe_compr_copy(struct snd_soc_component *component, 122 struct snd_compr_stream *cstream, 123 char __user *buf, size_t count) 124 { 125 struct snd_compr_runtime *rtd = cstream->runtime; 126 unsigned int offset, n; 127 void *ptr; 128 int ret; 129 130 if (count > rtd->buffer_size) 131 count = rtd->buffer_size; 132 133 div_u64_rem(rtd->total_bytes_transferred, rtd->buffer_size, &offset); 134 ptr = rtd->dma_area + offset; 135 n = rtd->buffer_size - offset; 136 137 if (count < n) { 138 ret = copy_to_user(buf, ptr, count); 139 } else { 140 ret = copy_to_user(buf, ptr, n); 141 ret += copy_to_user(buf + n, rtd->dma_area, count - n); 142 } 143 144 if (ret) 145 return count - ret; 146 return count; 147 } 148 149 const struct snd_compress_ops sof_probe_compressed_ops = { 150 .copy = sof_probe_compr_copy, 151 }; 152 EXPORT_SYMBOL(sof_probe_compressed_ops); 153