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/openbmc/linux/sound/drivers/
H A Daloop.c72 int (*open)(struct loopback_pcm *dpcm);
76 int (*start)(struct loopback_pcm *dpcm);
80 int (*stop)(struct loopback_pcm *dpcm);
82 int (*stop_sync)(struct loopback_pcm *dpcm);
84 int (*close_substream)(struct loopback_pcm *dpcm);
88 int (*close_cable)(struct loopback_pcm *dpcm);
94 void (*dpcm_info)(struct loopback_pcm *dpcm,
165 static inline unsigned int byte_pos(struct loopback_pcm *dpcm, unsigned int x) in byte_pos() argument
167 if (dpcm->pcm_rate_shift == NO_PITCH) { in byte_pos()
171 HZ * (unsigned long long)dpcm->pcm_rate_shift); in byte_pos()
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H A Ddummy.c243 static void dummy_systimer_rearm(struct dummy_systimer_pcm *dpcm) in dummy_systimer_rearm() argument
245 mod_timer(&dpcm->timer, jiffies + in dummy_systimer_rearm()
246 DIV_ROUND_UP(dpcm->frac_period_rest, dpcm->rate)); in dummy_systimer_rearm()
249 static void dummy_systimer_update(struct dummy_systimer_pcm *dpcm) in dummy_systimer_update() argument
253 delta = jiffies - dpcm->base_time; in dummy_systimer_update()
256 dpcm->base_time += delta; in dummy_systimer_update()
257 delta *= dpcm->rate; in dummy_systimer_update()
258 dpcm->frac_pos += delta; in dummy_systimer_update()
259 while (dpcm->frac_pos >= dpcm->frac_buffer_size) in dummy_systimer_update()
260 dpcm->frac_pos -= dpcm->frac_buffer_size; in dummy_systimer_update()
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/openbmc/linux/sound/soc/
H A Dsoc-pcm.c25 #include <sound/soc-dpcm.h>
113 struct snd_pcm_hw_params *params = &fe->dpcm[stream].hw_params; in dpcm_show_state()
114 struct snd_soc_dpcm *dpcm; in dpcm_show_state() local
123 dpcm_state_string(fe->dpcm[stream].state)); in dpcm_show_state()
125 if ((fe->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) && in dpcm_show_state()
126 (fe->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP)) in dpcm_show_state()
137 if (list_empty(&fe->dpcm[stream].be_clients)) { in dpcm_show_state()
143 for_each_dpcm_be(fe, stream, dpcm) { in dpcm_show_state()
144 struct snd_soc_pcm_runtime *be = dpcm->be; in dpcm_show_state()
145 params = &be->dpcm[stream].hw_params; in dpcm_show_state()
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H A Dsoc-compress.c21 #include <sound/soc-dpcm.h>
137 struct snd_soc_dpcm *dpcm; in soc_compr_open_fe() local
153 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; in soc_compr_open_fe()
158 for_each_dpcm_be(fe, stream, dpcm) in soc_compr_open_fe()
159 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; in soc_compr_open_fe()
180 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN; in soc_compr_open_fe()
181 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; in soc_compr_open_fe()
198 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; in soc_compr_open_fe()
207 struct snd_soc_dpcm *dpcm; in soc_compr_free_fe() local
215 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; in soc_compr_free_fe()
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/openbmc/linux/sound/pci/asihpi/
H A Dasihpi.c434 struct snd_card_asihpi_pcm *dpcm = runtime->private_data; in snd_card_asihpi_pcm_hw_params() local
446 hpi_handle_error(hpi_format_create(&dpcm->format, in snd_card_asihpi_pcm_hw_params()
451 if (hpi_instream_reset(dpcm->h_stream) != 0) in snd_card_asihpi_pcm_hw_params()
455 dpcm->h_stream, &dpcm->format) != 0) in snd_card_asihpi_pcm_hw_params()
459 dpcm->hpi_buffer_attached = 0; in snd_card_asihpi_pcm_hw_params()
461 err = hpi_stream_host_buffer_attach(dpcm->h_stream, in snd_card_asihpi_pcm_hw_params()
474 err = hpi_stream_get_info_ex(dpcm->h_stream, NULL, in snd_card_asihpi_pcm_hw_params()
475 &dpcm->hpi_buffer_attached, NULL, NULL, NULL); in snd_card_asihpi_pcm_hw_params()
484 dpcm->bytes_per_sec = bytes_per_sec; in snd_card_asihpi_pcm_hw_params()
485 dpcm->buffer_bytes = params_buffer_bytes(params); in snd_card_asihpi_pcm_hw_params()
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/openbmc/linux/sound/soc/generic/
H A Daudio-graph-card2-custom-sample.dtsi67 * [DPCM]
77 * [DPCM-Multi]
115 /* for [DPCM] */
121 /* for [DPCM-Multi] */
157 * [DPCM]: both FE / BE
163 * [DPCM-Multi]: both FE / BE
205 /* [DPCM-Multi]::BE */
246 dpcm {
255 /* [DPCM]::FE */
259 /* [DPCM-Multi]::FE */
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H A DKconfig10 It also support DPCM of multi CPU single Codec ststem.
19 It also support DPCM of multi CPU single Codec ststem.
H A Daudio-graph-card2.c132 DPCM
157 dpcm {
237 #define GRAPH_NODENAME_DPCM "dpcm"
305 str = "DPCM Front-End"; in graph_get_type()
307 str = "DPCM Back-End"; in graph_get_type()
485 * if DPCM-BE case in __graph_parse_node()
698 * dpcm { in audio_graph2_link_dpcm()
729 * dpcm { in audio_graph2_link_dpcm()
762 graph_parse_convert(ep, dai_props); /* at node of <dpcm> */ in audio_graph2_link_dpcm()
983 * dpcm { in graph_count_dpcm()
H A Daudio-graph-card.c180 dev_dbg(dev, "link_of DPCM (%pOF)\n", ep); in graph_dai_link_of_dpcm()
310 * It is DPCM in parse_as_dpcm_link()
363 /* check if link requires DPCM parsing */ in __graph_for_each_link()
413 * In DPCM sound case, in graph_for_each_link()
485 dev_dbg(dev, "Count As DPCM\n"); in graph_count_dpcm()
/openbmc/linux/include/sound/
H A Dsoc-dpcm.h3 * linux/sound/soc-dpcm.h -- ALSA SoC Dynamic PCM Support
77 /* list of BE and FE for this DPCM link */
108 list_for_each_entry(_dpcm, &(be)->dpcm[stream].fe_clients, list_fe)
111 list_for_each_entry(_dpcm, &(fe)->dpcm[stream].be_clients, list_be)
113 list_for_each_entry_safe(_dpcm, __dpcm, &(fe)->dpcm[stream].be_clients, list_be)
115 list_for_each_entry_continue_reverse(_dpcm, &(fe)->dpcm[stream].be_clients, list_be)
/openbmc/linux/Documentation/sound/soc/
H A Ddpcm.rst13 The DPCM runtime routing is determined by the ALSA mixer settings in the same
14 way as the analog signal is routed in an ASoC codec driver. DPCM uses a DAPM
18 DPCM re-uses all the existing component codec, platform and DAI drivers without
53 Example - DPCM Switching playback from DAI0 to DAI1
99 3. DPCM runs the PCM trigger(stop), hw_free(), shutdown() operations on DAI0
104 5. DPCM runs the PCM ops for startup(), hw_params(), prepare() and
108 and then DPCM will take care of managing the DAI PCM operations to either bring
113 DPCM machine driver
116 The DPCM enabled ASoC machine driver is similar to normal machine drivers
166 set the DAI link to a DPCM FE with the ``dynamic = 1``. The supported FE stream
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/openbmc/linux/Documentation/devicetree/bindings/sound/
H A Dfsl,asrc.txt5 output clock. The driver currently works as a Front End of DPCM with other Back
39 - fsl,asrc-rate : Defines a mutual sample rate used by DPCM Back Ends.
41 - fsl,asrc-width : Defines a mutual sample width used by DPCM Back Ends.
54 - fsl,asrc-format : Defines a mutual sample format used by DPCM Back
H A Daudio-graph-card2.yaml29 dpcm:
31 description: DPCM node
H A Dfsl,easrc.yaml62 description: Defines a mutual sample rate used by DPCM Back Ends
69 Defines a mutual sample format used by DPCM Back Ends
H A Dsimple-card.yaml481 # Multi DAI links with DPCM:
484 # CPU1 ------ PCM3168A-p /* DPCM 1ch/2ch */
485 # CPU2 --/ /* DPCM 3ch/4ch */
486 # CPU3 --/ /* DPCM 5ch/6ch */
487 # CPU4 --/ /* DPCM 7ch/8ch */
/openbmc/linux/drivers/staging/media/omap4iss/
H A Diss_csi2.c122 /* No DPCM decompression */
124 /* DPCM decompression */
129 /* No DPCM decompression */
131 /* DPCM decompression */
139 /* No DPCM decompression */
141 /* DPCM decompression */
146 /* No DPCM decompression */
148 /* DPCM decompression */
156 /* No DPCM decompression */
158 /* DPCM decompression */
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/openbmc/linux/drivers/media/platform/qcom/camss/
H A Dcamss-csid-gen1.h24 #define PLAIN_FORMAT_PLAIN8 0x0 /* supports DPCM, UNCOMPRESSED_6/8_BIT */
25 #define PLAIN_FORMAT_PLAIN16 0x1 /* supports DPCM, UNCOMPRESSED_10/16_BIT */
H A Dcamss-csid-gen2.h35 #define PLAIN_FORMAT_PLAIN8 0x0 /* supports DPCM, UNCOMPRESSED_6/8_BIT */
36 #define PLAIN_FORMAT_PLAIN16 0x1 /* supports DPCM, UNCOMPRESSED_10/16_BIT */
/openbmc/linux/drivers/media/platform/ti/omap3isp/
H A Dispcsi2.c104 /* No DPCM decompression */
106 /* DPCM decompression */
111 /* No DPCM decompression */
114 /* DPCM decompression */
122 /* No DPCM decompression */
124 /* DPCM decompression */
130 /* No DPCM decompression */
133 /* DPCM decompression */
142 /* No DPCM decompression */
145 /* DPCM decompression */
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/openbmc/linux/sound/soc/intel/avs/
H A Dpcm.c128 struct snd_soc_dpcm *dpcm; in avs_dai_be_hw_params() local
131 for_each_dpcm_fe(be, substream->stream, dpcm) { in avs_dai_be_hw_params()
132 fe = dpcm->fe; in avs_dai_be_hw_params()
133 fe_hw_params = &fe->dpcm[substream->stream].hw_params; in avs_dai_be_hw_params()
522 struct snd_soc_dpcm *dpcm; in avs_dai_fe_hw_params() local
538 for_each_dpcm_be(fe, substream->stream, dpcm) { in avs_dai_fe_hw_params()
539 be = dpcm->be; in avs_dai_fe_hw_params()
540 be_hw_params = &be->dpcm[substream->stream].hw_params; in avs_dai_fe_hw_params()
874 ret = dai->driver->ops->hw_params(substream, &rtd->dpcm[substream->stream].hw_params, dai); in avs_dai_resume_hw_params()
1440 struct snd_soc_dpcm *dpcm; in avs_component_hda_open() local
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/openbmc/linux/Documentation/userspace-api/media/v4l/
H A Dpixfmt-srggb10dpcm8.rst25 colour compressed to 8 bits each, using DPCM compression. DPCM,
/openbmc/linux/drivers/slimbus/
H A Dstream.c97 * From ASoC DPCM framework, this state is linked to startup() operation.
199 * return zero on success and error code on failure. From ASoC DPCM framework,
354 * Return: zero on success and error code on failure. From ASoC DPCM framework,
407 * Return: zero on success and error code on failure. From ASoC DPCM framework,
444 * Return: zero on success and error code on failure. From ASoC DPCM framework,
474 * Return: zero on success and error code on failure. From ASoC DPCM framework,
/openbmc/linux/sound/soc/qcom/
H A Dcommon.c135 /* DPCM backend */ in qcom_snd_parse_of()
140 /* DPCM frontend */ in qcom_snd_parse_of()
147 /* DPCM */ in qcom_snd_parse_of()
/openbmc/linux/sound/soc/fsl/
H A Dfsl_asrc_dma.c149 struct snd_soc_dpcm *dpcm; in fsl_asrc_dma_hw_params() local
155 /* Fetch the Back-End dma_data from DPCM */ in fsl_asrc_dma_hw_params()
156 for_each_dpcm_be(rtd, stream, dpcm) { in fsl_asrc_dma_hw_params()
157 struct snd_soc_pcm_runtime *be = dpcm->be; in fsl_asrc_dma_hw_params()
161 if (dpcm->fe != rtd) in fsl_asrc_dma_hw_params()
/openbmc/linux/Documentation/driver-api/soundwire/
H A Dstream.rst197 framework(ASoC DPCM) guarantees that stream operations on a card are
289 per stream. From ASoC DPCM framework, this stream state maybe linked to
320 only be invoked once by respective Master(s) and Slave(s). From ASoC DPCM
369 once per stream. From ASoC DPCM framework, this stream state is linked
401 stream. From ASoC DPCM framework, this stream state is linked to
429 per stream. From ASoC DPCM framework, this stream state is linked to
496 all the Master(s) and Slave(s) associated with stream. From ASoC DPCM
507 The .shutdown() ASoC DPCM operation calls below Bus API to release

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