47 /* is the current PCM operation for this BE ? */
49 			       struct snd_soc_pcm_runtime *be, int stream)  in snd_soc_dpcm_can_be_update()  argument
53 	     be->dpcm[stream].runtime_update))  in snd_soc_dpcm_can_be_update()
59 				    struct snd_soc_pcm_runtime *be,  in snd_soc_dpcm_check_state()  argument
69 	for_each_dpcm_fe(be, stream, dpcm) {  in snd_soc_dpcm_check_state()
83 	/* it's safe to do this BE DAI */  in snd_soc_dpcm_check_state()
88  * We can only hw_free, stop, pause or suspend a BE DAI if any of it's FE
92 					 struct snd_soc_pcm_runtime *be, int stream)  in snd_soc_dpcm_can_be_free_stop()  argument
100 	return snd_soc_dpcm_check_state(fe, be, stream, state, ARRAY_SIZE(state));  in snd_soc_dpcm_can_be_free_stop()
104  * We can only change hw params a BE DAI if any of it's FE are not prepared,
108 				      struct snd_soc_pcm_runtime *be, int stream)  in snd_soc_dpcm_can_be_params()  argument
117 	return snd_soc_dpcm_check_state(fe, be, stream, state, ARRAY_SIZE(state));  in snd_soc_dpcm_can_be_params()
121  * We can only prepare a BE DAI if any of it's FE are not prepared,
125 					struct snd_soc_pcm_runtime *be, int stream)  in snd_soc_dpcm_can_be_prepared()  argument
133 	return snd_soc_dpcm_check_state(fe, be, stream, state, ARRAY_SIZE(state));  in snd_soc_dpcm_can_be_prepared()
210 		struct snd_soc_pcm_runtime *be = dpcm->be;  in dpcm_show_state()  local
211 		params = &be->dpcm[stream].hw_params;  in dpcm_show_state()
214 				   "- %s\n", be->dai_link->name);  in dpcm_show_state()
218 				   dpcm_state_string(be->dpcm[stream].state));  in dpcm_show_state()
220 		if ((be->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) &&  in dpcm_show_state()
221 		    (be->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP))  in dpcm_show_state()
288 	name = kasprintf(GFP_KERNEL, "%s:%s", dpcm->be->dai_link->name,  in dpcm_create_debugfs_state()
337 static void dpcm_set_be_update_state(struct snd_soc_pcm_runtime *be,  in dpcm_set_be_update_state()  argument
340 	be->dpcm[stream].runtime_update = state;  in dpcm_set_be_update_state()
352  * Should typically be called when a stream is opened.
354  * Must be called with the rtd->card->pcm_mutex being held
379  * @rtd: The ASoC PCM runtime that should be checked.
381  * This function checks whether the power down delay should be ignored for a
411 		struct snd_soc_pcm_runtime *be = dpcm->be;  in dpcm_dapm_stream_event()  local
413 		dev_dbg(be->dev, "ASoC: BE %s event %d dir %d\n",  in dpcm_dapm_stream_event()
414 				be->dai_link->name, event, dir);  in dpcm_dapm_stream_event()
417 		    (be->dpcm[dir].users >= 1))  in dpcm_dapm_stream_event()
420 		snd_soc_dapm_stream_event(be, dir, event);  in dpcm_dapm_stream_event()
676 	 * chan min/max cannot be enforced if there are multiple CODEC DAIs  in snd_soc_runtime_calc_hw()
678 	 * channel allocation be fixed up later  in snd_soc_runtime_calc_hw()
697 	 * have bailed out on a higher level, since there would be no CPU or  in soc_pcm_init_runtime_hw()
779  * Called by ALSA when a PCM substream is closed. Private data can be
839  * then initialized and any private data can be allocated. This also calls
918  * rate, etc.  This function is non atomic and can be called multiple times,
1004 	/* clear the corresponding DAIs parameters when going to be inactive */  in soc_pcm_hw_clean()
1033  * Frees resources allocated by hw_params, can be called multiple times
1055  * function can also be called multiple times and can allocate buffers
1083 		 * set up transfer direction, it should not need to be  in __soc_pcm_hw_params()
1085 		 * not even be supported by that CODEC. There may be cases  in __soc_pcm_hw_params()
1086 		 * however where a CODEC needs to be set up although it is  in __soc_pcm_hw_params()
1266  * the runtime->delay will be updated via snd_soc_pcm_component/dai_delay().
1277 	/* should be called *after* snd_soc_pcm_component_pointer() */  in soc_pcm_pointer()
1286 /* connect a FE and BE */
1288 		struct snd_soc_pcm_runtime *be, int stream)  in dpcm_be_connect()  argument
1298 		if (dpcm->be == be)  in dpcm_be_connect()
1302 	be_substream = snd_soc_dpcm_get_substream(be, stream);  in dpcm_be_connect()
1305 		return snd_soc_ret(be->dev, -EINVAL,  in dpcm_be_connect()
1307 				   __func__, fe->dai_link->name, be->dai_link->name);  in dpcm_be_connect()
1310 		dev_dbg(be->dev, "FE is nonatomic but BE is not, forcing BE as nonatomic\n");  in dpcm_be_connect()
1318 	dpcm->be = be;  in dpcm_be_connect()
1323 	list_add(&dpcm->list_fe, &be->dpcm[stream].fe_clients);  in dpcm_be_connect()
1328 			stream ? "<-" : "->", be->dai_link->name);  in dpcm_be_connect()
1335 /* reparent a BE onto another FE */
1337 			struct snd_soc_pcm_runtime *be, int stream)  in dpcm_be_reparent()  argument
1342 	/* reparent if BE is connected to other FEs */  in dpcm_be_reparent()
1343 	if (!be->dpcm[stream].users)  in dpcm_be_reparent()
1346 	be_substream = snd_soc_dpcm_get_substream(be, stream);  in dpcm_be_reparent()
1350 	for_each_dpcm_fe(be, stream, dpcm) {  in dpcm_be_reparent()
1357 			stream ? "<-" : "->", dpcm->be->dai_link->name);  in dpcm_be_reparent()
1365 /* disconnect a BE and FE */
1376 		dev_dbg(fe->dev, "ASoC: BE %s disconnect check for %s\n",  in dpcm_be_disconnect()
1378 				dpcm->be->dai_link->name);  in dpcm_be_disconnect()
1385 			stream ? "<-" : "->", dpcm->be->dai_link->name);  in dpcm_be_disconnect()
1388 		dpcm_be_reparent(fe, dpcm->be, stream);  in dpcm_be_disconnect()
1404 /* get BE for DAI widget and stream */
1408 	struct snd_soc_pcm_runtime *be;  in dpcm_get_be()  local
1413 	dev_dbg(card->dev, "ASoC: find BE for widget %s\n", widget->name);  in dpcm_get_be()
1415 	for_each_card_rtds(card, be) {  in dpcm_get_be()
1417 		if (!be->dai_link->no_pcm)  in dpcm_get_be()
1420 		if (!snd_soc_dpcm_get_substream(be, stream))  in dpcm_get_be()
1423 		for_each_rtd_dais(be, i, dai) {  in dpcm_get_be()
1426 			dev_dbg(card->dev, "ASoC: try BE : %s\n",  in dpcm_get_be()
1430 				return be;  in dpcm_get_be()
1434 	/* Widget provided is not a BE */  in dpcm_get_be()
1508 	/* is there a valid DAI widget for this BE */  in dpcm_be_is_active()
1509 	for_each_rtd_dais(dpcm->be, i, dai) {  in dpcm_be_is_active()
1513 		 * The BE is pruned only if none of the dai  in dpcm_be_is_active()
1529 	/* Destroy any old FE <--> BE connections */  in dpcm_prune_paths()
1534 		dev_dbg(fe->dev, "ASoC: pruning %s BE %s for %s\n",  in dpcm_prune_paths()
1536 			dpcm->be->dai_link->name, fe->dai_link->name);  in dpcm_prune_paths()
1538 		dpcm_set_be_update_state(dpcm->be, stream, SND_SOC_DPCM_UPDATE_BE);  in dpcm_prune_paths()
1542 	dev_dbg(fe->dev, "ASoC: found %d old BE paths for pruning\n", prune);  in dpcm_prune_paths()
1551 	struct snd_soc_pcm_runtime *be;  in dpcm_add_paths()  local
1560 	/* Create any new FE <--> BE connections */  in dpcm_add_paths()
1576 		/* is there a valid BE rtd for this widget */  in dpcm_add_paths()
1577 		be = dpcm_get_be(card, widget, stream);  in dpcm_add_paths()
1578 		if (!be) {  in dpcm_add_paths()
1579 			dev_dbg(fe->dev, "ASoC: no BE found for %s\n",  in dpcm_add_paths()
1587 		 * already active BE on such systems and ensures the BE DAI  in dpcm_add_paths()
1588 		 * widget is powered ON after hw_params() BE DAI callback.  in dpcm_add_paths()
1591 		    (be->dpcm[stream].state != SND_SOC_DPCM_STATE_NEW) &&  in dpcm_add_paths()
1592 		    (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) &&  in dpcm_add_paths()
1593 		    (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) &&  in dpcm_add_paths()
1594 		    (be->dpcm[stream].state != SND_SOC_DPCM_STATE_CLOSE))  in dpcm_add_paths()
1597 		/* newly connected FE and BE */  in dpcm_add_paths()
1598 		err = dpcm_be_connect(fe, be, stream);  in dpcm_add_paths()
1607 		dpcm_set_be_update_state(be, stream, SND_SOC_DPCM_UPDATE_BE);  in dpcm_add_paths()
1611 	dev_dbg(fe->dev, "ASoC: found %d new BE paths\n", new);  in dpcm_add_paths()
1620 		dpcm_set_be_update_state(dpcm->be, stream, SND_SOC_DPCM_UPDATE_NO);  in dpcm_clear_pending_state()
1630 		struct snd_soc_pcm_runtime *be = dpcm->be;  in dpcm_be_dai_stop()  local
1632 			snd_soc_dpcm_get_substream(be, stream);  in dpcm_be_dai_stop()
1637 		/* is this op for this BE ? */  in dpcm_be_dai_stop()
1638 		if (!snd_soc_dpcm_can_be_update(fe, be, stream))  in dpcm_be_dai_stop()
1641 		if (be->dpcm[stream].users == 0) {  in dpcm_be_dai_stop()
1642 			dev_err(be->dev, "ASoC: no users %s at close - state %s\n",  in dpcm_be_dai_stop()
1644 				dpcm_state_string(be->dpcm[stream].state));  in dpcm_be_dai_stop()
1648 		if (--be->dpcm[stream].users != 0)  in dpcm_be_dai_stop()
1651 		if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) {  in dpcm_be_dai_stop()
1655 			if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) {  in dpcm_be_dai_stop()
1656 				__soc_pcm_hw_free(be, be_substream);  in dpcm_be_dai_stop()
1657 				be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE;  in dpcm_be_dai_stop()
1661 		__soc_pcm_close(be, be_substream);  in dpcm_be_dai_stop()
1663 		be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;  in dpcm_be_dai_stop()
1670 	struct snd_soc_pcm_runtime *be;  in dpcm_be_dai_startup()  local
1674 	/* only startup BE DAIs that are either sinks or sources to this FE DAI */  in dpcm_be_dai_startup()
1678 		be = dpcm->be;  in dpcm_be_dai_startup()
1679 		be_substream = snd_soc_dpcm_get_substream(be, stream);  in dpcm_be_dai_startup()
1682 			dev_err(be->dev, "ASoC: no backend %s stream\n",  in dpcm_be_dai_startup()
1687 		/* is this op for this BE ? */  in dpcm_be_dai_startup()
1688 		if (!snd_soc_dpcm_can_be_update(fe, be, stream))  in dpcm_be_dai_startup()
1692 		if (be->dpcm[stream].users == DPCM_MAX_BE_USERS) {  in dpcm_be_dai_startup()
1693 			dev_err(be->dev, "ASoC: too many users %s at open %s\n",  in dpcm_be_dai_startup()
1695 				dpcm_state_string(be->dpcm[stream].state));  in dpcm_be_dai_startup()
1699 		if (be->dpcm[stream].users++ != 0)  in dpcm_be_dai_startup()
1702 		if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_NEW) &&  in dpcm_be_dai_startup()
1703 		    (be->dpcm[stream].state != SND_SOC_DPCM_STATE_CLOSE))  in dpcm_be_dai_startup()
1706 		dev_dbg(be->dev, "ASoC: open %s BE %s\n",  in dpcm_be_dai_startup()
1707 			snd_pcm_direction_name(stream), be->dai_link->name);  in dpcm_be_dai_startup()
1710 		err = __soc_pcm_open(be, be_substream);  in dpcm_be_dai_startup()
1712 			be->dpcm[stream].users--;  in dpcm_be_dai_startup()
1713 			if (be->dpcm[stream].users < 0)  in dpcm_be_dai_startup()
1714 				dev_err(be->dev, "ASoC: no users %s at unwind %s\n",  in dpcm_be_dai_startup()
1716 					dpcm_state_string(be->dpcm[stream].state));  in dpcm_be_dai_startup()
1718 			be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;  in dpcm_be_dai_startup()
1721 		be->dpcm[stream].be_start = 0;  in dpcm_be_dai_startup()
1722 		be->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN;  in dpcm_be_dai_startup()
1781 	 * It returns merged BE codec format  in dpcm_runtime_setup_be_format()
1786 		struct snd_soc_pcm_runtime *be = dpcm->be;  in dpcm_runtime_setup_be_format()  local
1790 		for_each_rtd_codec_dais(be, i, dai) {  in dpcm_runtime_setup_be_format()
1817 	 * It returns merged BE codec channel;  in dpcm_runtime_setup_be_chan()
1822 		struct snd_soc_pcm_runtime *be = dpcm->be;  in dpcm_runtime_setup_be_chan()  local
1827 		for_each_rtd_cpu_dais(be, i, dai) {  in dpcm_runtime_setup_be_chan()
1841 		 * chan min/max cannot be enforced if there are multiple CODEC  in dpcm_runtime_setup_be_chan()
1844 		if (be->dai_link->num_codecs == 1) {  in dpcm_runtime_setup_be_chan()
1846 				snd_soc_rtd_to_codec(be, 0), stream);  in dpcm_runtime_setup_be_chan()
1865 	 * It returns merged BE codec channel;  in dpcm_runtime_setup_be_rate()
1870 		struct snd_soc_pcm_runtime *be = dpcm->be;  in dpcm_runtime_setup_be_rate()  local
1875 		for_each_rtd_dais(be, i, dai) {  in dpcm_runtime_setup_be_rate()
1909 	/* apply symmetry for BE */  in dpcm_apply_symmetry()
1911 		struct snd_soc_pcm_runtime *be = dpcm->be;  in dpcm_apply_symmetry()  local
1913 			snd_soc_dpcm_get_substream(be, stream);  in dpcm_apply_symmetry()
2008 		struct snd_soc_pcm_runtime *be = dpcm->be;  in dpcm_be_dai_hw_free()  local
2010 			snd_soc_dpcm_get_substream(be, stream);  in dpcm_be_dai_hw_free()
2012 		/* is this op for this BE ? */  in dpcm_be_dai_hw_free()
2013 		if (!snd_soc_dpcm_can_be_update(fe, be, stream))  in dpcm_be_dai_hw_free()
2017 		if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream))  in dpcm_be_dai_hw_free()
2020 		/* do not free hw if this BE is used by other FE */  in dpcm_be_dai_hw_free()
2021 		if (be->dpcm[stream].users > 1)  in dpcm_be_dai_hw_free()
2024 		if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) &&  in dpcm_be_dai_hw_free()
2025 		    (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) &&  in dpcm_be_dai_hw_free()
2026 		    (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) &&  in dpcm_be_dai_hw_free()
2027 		    (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED) &&  in dpcm_be_dai_hw_free()
2028 		    (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP) &&  in dpcm_be_dai_hw_free()
2029 		    (be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND))  in dpcm_be_dai_hw_free()
2032 		dev_dbg(be->dev, "ASoC: hw_free BE %s\n",  in dpcm_be_dai_hw_free()
2033 			be->dai_link->name);  in dpcm_be_dai_hw_free()
2035 		__soc_pcm_hw_free(be, be_substream);  in dpcm_be_dai_hw_free()
2037 		be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE;  in dpcm_be_dai_hw_free()
2067 	struct snd_soc_pcm_runtime *be;  in dpcm_be_dai_hw_params()  local
2075 		be = dpcm->be;  in dpcm_be_dai_hw_params()
2076 		be_substream = snd_soc_dpcm_get_substream(be, stream);  in dpcm_be_dai_hw_params()
2078 		/* is this op for this BE ? */  in dpcm_be_dai_hw_params()
2079 		if (!snd_soc_dpcm_can_be_update(fe, be, stream))  in dpcm_be_dai_hw_params()
2087 		ret = snd_soc_link_be_hw_params_fixup(be, &hw_params);  in dpcm_be_dai_hw_params()
2091 		/* copy the fixed-up hw params for BE dai */  in dpcm_be_dai_hw_params()
2092 		memcpy(&be->dpcm[stream].hw_params, &hw_params,  in dpcm_be_dai_hw_params()
2096 		if (!snd_soc_dpcm_can_be_params(fe, be, stream))  in dpcm_be_dai_hw_params()
2099 		if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) &&  in dpcm_be_dai_hw_params()
2100 		    (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) &&  in dpcm_be_dai_hw_params()
2101 		    (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE))  in dpcm_be_dai_hw_params()
2104 		dev_dbg(be->dev, "ASoC: hw_params BE %s\n",  in dpcm_be_dai_hw_params()
2105 			be->dai_link->name);  in dpcm_be_dai_hw_params()
2111 		be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS;  in dpcm_be_dai_hw_params()
2117 		__func__, be->dai_link->name, ret);  in dpcm_be_dai_hw_params()
2121 		be = dpcm->be;  in dpcm_be_dai_hw_params()
2122 		be_substream = snd_soc_dpcm_get_substream(be, stream);  in dpcm_be_dai_hw_params()
2124 		if (!snd_soc_dpcm_can_be_update(fe, be, stream))  in dpcm_be_dai_hw_params()
2128 		if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream))  in dpcm_be_dai_hw_params()
2131 		if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) &&  in dpcm_be_dai_hw_params()
2132 		   (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) &&  in dpcm_be_dai_hw_params()
2133 		   (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) &&  in dpcm_be_dai_hw_params()
2134 		   (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP))  in dpcm_be_dai_hw_params()
2137 		__soc_pcm_hw_free(be, be_substream);  in dpcm_be_dai_hw_params()
2179 	struct snd_soc_pcm_runtime *be;  in dpcm_be_dai_trigger()  local
2188 		be = dpcm->be;  in dpcm_be_dai_trigger()
2189 		be_substream = snd_soc_dpcm_get_substream(be, stream);  in dpcm_be_dai_trigger()
2193 		/* is this op for this BE ? */  in dpcm_be_dai_trigger()
2194 		if (!snd_soc_dpcm_can_be_update(fe, be, stream))  in dpcm_be_dai_trigger()
2197 		dev_dbg(be->dev, "ASoC: trigger BE %s cmd %d\n",  in dpcm_be_dai_trigger()
2198 			be->dai_link->name, cmd);  in dpcm_be_dai_trigger()
2202 			if (!be->dpcm[stream].be_start &&  in dpcm_be_dai_trigger()
2203 			    (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) &&  in dpcm_be_dai_trigger()
2204 			    (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP) &&  in dpcm_be_dai_trigger()
2205 			    (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED))  in dpcm_be_dai_trigger()
2208 			be->dpcm[stream].be_start++;  in dpcm_be_dai_trigger()
2209 			if (be->dpcm[stream].be_start != 1)  in dpcm_be_dai_trigger()
2212 			if (be->dpcm[stream].state == SND_SOC_DPCM_STATE_PAUSED)  in dpcm_be_dai_trigger()
2219 				be->dpcm[stream].be_start--;  in dpcm_be_dai_trigger()
2223 			be->dpcm[stream].state = SND_SOC_DPCM_STATE_START;  in dpcm_be_dai_trigger()
2226 			if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND))  in dpcm_be_dai_trigger()
2229 			be->dpcm[stream].be_start++;  in dpcm_be_dai_trigger()
2230 			if (be->dpcm[stream].be_start != 1)  in dpcm_be_dai_trigger()
2235 				be->dpcm[stream].be_start--;  in dpcm_be_dai_trigger()
2239 			be->dpcm[stream].state = SND_SOC_DPCM_STATE_START;  in dpcm_be_dai_trigger()
2242 			if (!be->dpcm[stream].be_start &&  in dpcm_be_dai_trigger()
2243 			    (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) &&  in dpcm_be_dai_trigger()
2244 			    (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED))  in dpcm_be_dai_trigger()
2248 			be->dpcm[stream].be_pause--;  in dpcm_be_dai_trigger()
2250 			be->dpcm[stream].be_start++;  in dpcm_be_dai_trigger()
2251 			if (be->dpcm[stream].be_start != 1)  in dpcm_be_dai_trigger()
2256 				be->dpcm[stream].be_start--;  in dpcm_be_dai_trigger()
2260 			be->dpcm[stream].state = SND_SOC_DPCM_STATE_START;  in dpcm_be_dai_trigger()
2263 			if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) &&  in dpcm_be_dai_trigger()
2264 			    (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED))  in dpcm_be_dai_trigger()
2267 			if (be->dpcm[stream].state == SND_SOC_DPCM_STATE_START)  in dpcm_be_dai_trigger()
2268 				be->dpcm[stream].be_start--;  in dpcm_be_dai_trigger()
2270 			if (be->dpcm[stream].be_start != 0)  in dpcm_be_dai_trigger()
2277 				be->dpcm[stream].be_pause--;  in dpcm_be_dai_trigger()
2280 			if (be->dpcm[stream].be_pause != 0)  in dpcm_be_dai_trigger()
2286 				if (be->dpcm[stream].state == SND_SOC_DPCM_STATE_START)  in dpcm_be_dai_trigger()
2287 					be->dpcm[stream].be_start++;  in dpcm_be_dai_trigger()
2290 					be->dpcm[stream].be_pause++;  in dpcm_be_dai_trigger()
2295 			if (be->dpcm[stream].be_pause != 0)  in dpcm_be_dai_trigger()
2296 				be->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED;  in dpcm_be_dai_trigger()
2298 				be->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP;  in dpcm_be_dai_trigger()
2302 			if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START)  in dpcm_be_dai_trigger()
2305 			be->dpcm[stream].be_start--;  in dpcm_be_dai_trigger()
2306 			if (be->dpcm[stream].be_start != 0)  in dpcm_be_dai_trigger()
2311 				be->dpcm[stream].be_start++;  in dpcm_be_dai_trigger()
2315 			be->dpcm[stream].state = SND_SOC_DPCM_STATE_SUSPEND;  in dpcm_be_dai_trigger()
2318 			if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START)  in dpcm_be_dai_trigger()
2322 			be->dpcm[stream].be_pause++;  in dpcm_be_dai_trigger()
2324 			be->dpcm[stream].be_start--;  in dpcm_be_dai_trigger()
2325 			if (be->dpcm[stream].be_start != 0)  in dpcm_be_dai_trigger()
2330 				be->dpcm[stream].be_start++;  in dpcm_be_dai_trigger()
2334 			be->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED;  in dpcm_be_dai_trigger()
2466 		struct snd_soc_pcm_runtime *be = dpcm->be;  in dpcm_be_dai_prepare()  local
2468 			snd_soc_dpcm_get_substream(be, stream);  in dpcm_be_dai_prepare()
2470 		/* is this op for this BE ? */  in dpcm_be_dai_prepare()
2471 		if (!snd_soc_dpcm_can_be_update(fe, be, stream))  in dpcm_be_dai_prepare()
2474 		if (!snd_soc_dpcm_can_be_prepared(fe, be, stream))  in dpcm_be_dai_prepare()
2477 		if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) &&  in dpcm_be_dai_prepare()
2478 		    (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP) &&  in dpcm_be_dai_prepare()
2479 		    (be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND) &&  in dpcm_be_dai_prepare()
2480 		    (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED))  in dpcm_be_dai_prepare()
2483 		dev_dbg(be->dev, "ASoC: prepare BE %s\n",  in dpcm_be_dai_prepare()
2484 			be->dai_link->name);  in dpcm_be_dai_prepare()
2486 		ret = __soc_pcm_prepare(be, be_substream);  in dpcm_be_dai_prepare()
2490 		be->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE;  in dpcm_be_dai_prepare()
2550 	/* run the stream event for each BE */  in dpcm_run_update_shutdown()
2564 	/* Only start the BE if the FE is ready */  in dpcm_run_update_startup()
2573 	/* startup must always be called for new BEs */  in dpcm_run_update_startup()
2594 	/* run the stream event for each BE */  in dpcm_run_update_startup()
2615 		struct snd_soc_pcm_runtime *be = dpcm->be;  in dpcm_run_update_startup()  local
2617 		/* is this op for this BE ? */  in dpcm_run_update_startup()
2618 		if (!snd_soc_dpcm_can_be_update(fe, be, stream))  in dpcm_run_update_startup()
2621 		if (be->dpcm[stream].state == SND_SOC_DPCM_STATE_CLOSE ||  in dpcm_run_update_startup()
2622 			be->dpcm[stream].state == SND_SOC_DPCM_STATE_NEW)  in dpcm_run_update_startup()
2668 		 * Find the corresponding BE DAIs that source or sink audio to this  in soc_dpcm_fe_runtime_update()
2765 	/* calculate valid and active FE <-> BE dpcms */  in dpcm_fe_dai_open()
2825 		 * It should be checked, but it breaks compatibility.  in soc_get_playback_capture()
2829 		 * Codec capture validation check will be fail, but system should allow capture  in soc_get_playback_capture()
2990 /* get the substream for this BE */
2992 	snd_soc_dpcm_get_substream(struct snd_soc_pcm_runtime *be, int stream)  in snd_soc_dpcm_get_substream()  argument
2994 	return be->pcm->streams[stream].substream;  in snd_soc_dpcm_get_substream()