1 // SPDX-License-Identifier: GPL-2.0-only
3 // Copyright(c) 2021-2022 Intel Corporation
9 #include <sound/compress_driver.h>
10 #include <sound/hdaudio_ext.h>
11 #include <sound/hdaudio.h>
12 #include <sound/soc.h>
16 static int avs_dsp_init_probe(struct avs_dev *adev, union avs_connector_node_id node_id,
19 struct avs_probe_cfg cfg = {{0}};
20 struct avs_module_entry mentry;
24 ret = avs_get_module_entry(adev, &AVS_PROBE_MOD_UUID, &mentry);
29 * Probe module uses no cycles, audio data format and input and output
30 * frame sizes are unused. It is also not owned by any pipeline.
33 /* BSS module descriptor is always segment of index=2. */
34 cfg.base.is_pages = mentry.segments[2].flags.length;
35 cfg.gtw_cfg.node_id = node_id;
36 cfg.gtw_cfg.dma_buffer_size = buffer_size;
38 return avs_dsp_init_module(adev, mentry.module_id, INVALID_PIPELINE_ID, 0, 0, &cfg,
42 static void avs_dsp_delete_probe(struct avs_dev *adev)
44 struct avs_module_entry mentry;
47 ret = avs_get_module_entry(adev, &AVS_PROBE_MOD_UUID, &mentry);
49 /* There is only ever one probe module instance. */
50 avs_dsp_delete_module(adev, mentry.module_id, 0, INVALID_PIPELINE_ID, 0);
53 static inline struct hdac_ext_stream *avs_compr_get_host_stream(struct snd_compr_stream *cstream)
55 return cstream->runtime->private_data;
58 static int avs_probe_compr_open(struct snd_compr_stream *cstream, struct snd_soc_dai *dai)
60 struct avs_dev *adev = to_avs_dev(dai->dev);
61 struct hdac_bus *bus = &adev->base.core;
62 struct hdac_ext_stream *host_stream;
64 if (adev->extractor) {
65 dev_err(dai->dev, "Cannot open more than one extractor stream\n");
69 host_stream = snd_hdac_ext_cstream_assign(bus, cstream);
71 dev_err(dai->dev, "Failed to assign HDAudio stream for extraction\n");
75 adev->extractor = host_stream;
76 hdac_stream(host_stream)->curr_pos = 0;
77 cstream->runtime->private_data = host_stream;
82 static int avs_probe_compr_free(struct snd_compr_stream *cstream, struct snd_soc_dai *dai)
84 struct hdac_ext_stream *host_stream = avs_compr_get_host_stream(cstream);
85 struct avs_dev *adev = to_avs_dev(dai->dev);
86 struct avs_probe_point_desc *desc;
87 /* Extractor node identifier. */
88 unsigned int vindex = INVALID_NODE_ID.vindex;
92 /* Disconnect all probe points. */
93 ret = avs_ipc_probe_get_points(adev, &desc, &num_desc);
95 dev_err(dai->dev, "get probe points failed: %d\n", ret);
96 ret = AVS_IPC_RET(ret);
100 for (i = 0; i < num_desc; i++)
101 if (desc[i].node_id.vindex == vindex)
102 avs_ipc_probe_disconnect_points(adev, &desc[i].id, 1);
106 if (adev->num_probe_streams) {
107 adev->num_probe_streams--;
108 if (!adev->num_probe_streams) {
109 avs_dsp_delete_probe(adev);
110 avs_dsp_enable_d0ix(adev);
114 snd_hdac_stream_cleanup(hdac_stream(host_stream));
115 hdac_stream(host_stream)->prepared = 0;
116 snd_hdac_ext_stream_release(host_stream, HDAC_EXT_STREAM_TYPE_HOST);
118 snd_compr_free_pages(cstream);
119 adev->extractor = NULL;
124 static int avs_probe_compr_set_params(struct snd_compr_stream *cstream,
125 struct snd_compr_params *params, struct snd_soc_dai *dai)
127 struct hdac_ext_stream *host_stream = avs_compr_get_host_stream(cstream);
128 struct snd_compr_runtime *rtd = cstream->runtime;
129 struct avs_dev *adev = to_avs_dev(dai->dev);
130 /* compr params do not store bit depth, default to S32_LE. */
131 snd_pcm_format_t format = SNDRV_PCM_FORMAT_S32_LE;
132 unsigned int format_val;
135 hdac_stream(host_stream)->bufsize = 0;
136 hdac_stream(host_stream)->period_bytes = 0;
137 hdac_stream(host_stream)->format_val = 0;
138 cstream->dma_buffer.dev.type = SNDRV_DMA_TYPE_DEV_SG;
139 cstream->dma_buffer.dev.dev = adev->dev;
141 ret = snd_compr_malloc_pages(cstream, rtd->buffer_size);
144 bps = snd_pcm_format_physical_width(format);
147 format_val = snd_hdac_stream_format(params->codec.ch_out, bps, params->codec.sample_rate);
148 ret = snd_hdac_stream_set_params(hdac_stream(host_stream), format_val);
151 ret = snd_hdac_stream_setup(hdac_stream(host_stream), false);
155 hdac_stream(host_stream)->prepared = 1;
157 if (!adev->num_probe_streams) {
158 union avs_connector_node_id node_id;
160 /* D0ix not allowed during probing. */
161 ret = avs_dsp_disable_d0ix(adev);
165 node_id.vindex = hdac_stream(host_stream)->stream_tag - 1;
166 node_id.dma_type = AVS_DMA_HDA_HOST_INPUT;
168 ret = avs_dsp_init_probe(adev, node_id, rtd->dma_bytes);
170 dev_err(dai->dev, "probe init failed: %d\n", ret);
171 avs_dsp_enable_d0ix(adev);
176 adev->num_probe_streams++;
180 static int avs_probe_compr_trigger(struct snd_compr_stream *cstream, int cmd,
181 struct snd_soc_dai *dai)
183 struct hdac_ext_stream *host_stream = avs_compr_get_host_stream(cstream);
184 struct avs_dev *adev = to_avs_dev(dai->dev);
185 struct hdac_bus *bus = &adev->base.core;
186 unsigned long cookie;
188 if (!hdac_stream(host_stream)->prepared)
192 case SNDRV_PCM_TRIGGER_START:
193 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
194 case SNDRV_PCM_TRIGGER_RESUME:
195 spin_lock_irqsave(&bus->reg_lock, cookie);
196 snd_hdac_stream_start(hdac_stream(host_stream));
197 spin_unlock_irqrestore(&bus->reg_lock, cookie);
200 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
201 case SNDRV_PCM_TRIGGER_SUSPEND:
202 case SNDRV_PCM_TRIGGER_STOP:
203 spin_lock_irqsave(&bus->reg_lock, cookie);
204 snd_hdac_stream_stop(hdac_stream(host_stream));
205 spin_unlock_irqrestore(&bus->reg_lock, cookie);
215 static int avs_probe_compr_pointer(struct snd_compr_stream *cstream,
216 struct snd_compr_tstamp *tstamp, struct snd_soc_dai *dai)
218 struct hdac_ext_stream *host_stream = avs_compr_get_host_stream(cstream);
219 struct snd_soc_pcm_stream *pstream;
221 pstream = &dai->driver->capture;
222 tstamp->copied_total = hdac_stream(host_stream)->curr_pos;
223 tstamp->sampling_rate = snd_pcm_rate_bit_to_rate(pstream->rates);
228 static int avs_probe_compr_copy(struct snd_soc_component *comp, struct snd_compr_stream *cstream,
229 char __user *buf, size_t count)
231 struct snd_compr_runtime *rtd = cstream->runtime;
232 unsigned int offset, n;
236 if (count > rtd->buffer_size)
237 count = rtd->buffer_size;
239 div_u64_rem(rtd->total_bytes_transferred, rtd->buffer_size, &offset);
240 ptr = rtd->dma_area + offset;
241 n = rtd->buffer_size - offset;
244 ret = copy_to_user(buf, ptr, count);
246 ret = copy_to_user(buf, ptr, n);
247 ret += copy_to_user(buf + n, rtd->dma_area, count - n);
255 static const struct snd_soc_cdai_ops avs_probe_cdai_ops = {
256 .startup = avs_probe_compr_open,
257 .shutdown = avs_probe_compr_free,
258 .set_params = avs_probe_compr_set_params,
259 .trigger = avs_probe_compr_trigger,
260 .pointer = avs_probe_compr_pointer,
263 static const struct snd_soc_dai_ops avs_probe_dai_ops = {
264 .compress_new = snd_soc_new_compress,
267 static const struct snd_compress_ops avs_probe_compress_ops = {
268 .copy = avs_probe_compr_copy,
271 static struct snd_soc_dai_driver probe_cpu_dais[] = {
273 .name = "Probe Extraction CPU DAI",
274 .cops = &avs_probe_cdai_ops,
275 .ops = &avs_probe_dai_ops,
277 .stream_name = "Probe Extraction",
280 .rates = SNDRV_PCM_RATE_48000,
287 static const struct snd_soc_component_driver avs_probe_component_driver = {
288 .name = "avs-probe-compr",
289 .compress_ops = &avs_probe_compress_ops,
290 .module_get_upon_open = 1, /* increment refcount when a stream is opened */
293 int avs_probe_platform_register(struct avs_dev *adev, const char *name)
295 return avs_soc_component_register(adev->dev, name, &avs_probe_component_driver,
296 probe_cpu_dais, ARRAY_SIZE(probe_cpu_dais));