| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Kuninori Morimoto | 6606 | 48.86% | 149 | 46.71% |
| Liam Girdwood | 3355 | 24.81% | 13 | 4.08% |
| Takashi Iwai | 727 | 5.38% | 12 | 3.76% |
| Pierre-Louis Bossart | 596 | 4.41% | 14 | 4.39% |
| Bard Liao | 213 | 1.58% | 3 | 0.94% |
| Jerome Brunet | 184 | 1.36% | 8 | 2.51% |
| Shreyas NC | 166 | 1.23% | 1 | 0.31% |
| Mark Brown | 151 | 1.12% | 13 | 4.08% |
| Benoît Cousson | 144 | 1.07% | 4 | 1.25% |
| Lars-Peter Clausen | 132 | 0.98% | 13 | 4.08% |
| Ranjani Sridharan | 122 | 0.90% | 7 | 2.19% |
| Samuel Holland | 97 | 0.72% | 1 | 0.31% |
| Frank Mandarino | 95 | 0.70% | 1 | 0.31% |
| Atsushi Nemoto | 95 | 0.70% | 1 | 0.31% |
| Chancel Liu | 79 | 0.58% | 2 | 0.63% |
| Charles Keepax | 77 | 0.57% | 7 | 2.19% |
| Peter Ujfalusi | 63 | 0.47% | 4 | 1.25% |
| KaiChieh Chuang | 54 | 0.40% | 2 | 0.63% |
| Guennadi Liakhovetski | 47 | 0.35% | 2 | 0.63% |
| Jiada Wang | 42 | 0.31% | 1 | 0.31% |
| PC Liao | 37 | 0.27% | 1 | 0.31% |
| Nicolin Chen | 37 | 0.27% | 3 | 0.94% |
| 朱灿灿 | 36 | 0.27% | 2 | 0.63% |
| Shengjiu Wang | 30 | 0.22% | 4 | 1.25% |
| Claudiu Beznea | 29 | 0.21% | 1 | 0.31% |
| Russell King | 22 | 0.16% | 1 | 0.31% |
| Vinod Koul | 22 | 0.16% | 3 | 0.94% |
| Hans de Goede | 21 | 0.16% | 1 | 0.31% |
| Johan Hovold | 19 | 0.14% | 1 | 0.31% |
| Srinivas Kandagatla | 18 | 0.13% | 2 | 0.63% |
| Stephan Gerhold | 18 | 0.13% | 2 | 0.63% |
| Libin Yang | 16 | 0.12% | 2 | 0.63% |
| Banajit Goswami | 15 | 0.11% | 1 | 0.31% |
| Sameer Pujar | 14 | 0.10% | 2 | 0.63% |
| Koro Chen | 13 | 0.10% | 2 | 0.63% |
| Vijendar Mukunda | 13 | 0.10% | 1 | 0.31% |
| Dong Aisheng | 12 | 0.09% | 1 | 0.31% |
| Troy Kisky | 9 | 0.07% | 1 | 0.31% |
| Dan Carpenter | 7 | 0.05% | 2 | 0.63% |
| 이경택 | 7 | 0.05% | 1 | 0.31% |
| Stephen Warren | 6 | 0.04% | 1 | 0.31% |
| Cezary Rojewski | 6 | 0.04% | 1 | 0.31% |
| Jarkko Nikula | 6 | 0.04% | 1 | 0.31% |
| Srinivasa Rao Mandadapu | 6 | 0.04% | 1 | 0.31% |
| Patrick Lai | 6 | 0.04% | 2 | 0.63% |
| Qiao Zhou | 6 | 0.04% | 1 | 0.31% |
| Arnd Bergmann | 5 | 0.04% | 1 | 0.31% |
| Jeeja KP | 4 | 0.03% | 1 | 0.31% |
| Kai Vehmanen | 4 | 0.03% | 1 | 0.31% |
| Tejun Heo | 3 | 0.02% | 1 | 0.31% |
| Markus Pargmann | 3 | 0.02% | 1 | 0.31% |
| Ricard Wanderlöf | 3 | 0.02% | 1 | 0.31% |
| Piotr Stankiewicz | 3 | 0.02% | 1 | 0.31% |
| Akshu Agrawal | 2 | 0.01% | 1 | 0.31% |
| Sanyog Kale | 2 | 0.01% | 1 | 0.31% |
| Souptick Joarder | 2 | 0.01% | 1 | 0.31% |
| Marek Vašut | 2 | 0.01% | 1 | 0.31% |
| Jaroslav Kysela | 2 | 0.01% | 1 | 0.31% |
| Ramesh Babu K V | 2 | 0.01% | 1 | 0.31% |
| Curtis Malainey | 2 | 0.01% | 1 | 0.31% |
| Mengdong Lin | 1 | 0.01% | 1 | 0.31% |
| 彭东林 | 1 | 0.01% | 1 | 0.31% |
| Fabio Estevam | 1 | 0.01% | 1 | 0.31% |
| Marcel Ziswiler | 1 | 0.01% | 1 | 0.31% |
| Colton Lewis | 1 | 0.01% | 1 | 0.31% |
| Christophe Jaillet | 1 | 0.01% | 1 | 0.31% |
| Total | 13521 | 319 |
// SPDX-License-Identifier: GPL-2.0+ // // soc-pcm.c -- ALSA SoC PCM // // Copyright 2005 Wolfson Microelectronics PLC. // Copyright 2005 Openedhand Ltd. // Copyright (C) 2010 Slimlogic Ltd. // Copyright (C) 2010 Texas Instruments Inc. // // Authors: Liam Girdwood <lrg@ti.com> // Mark Brown <broonie@opensource.wolfsonmicro.com> #include <linux/kernel.h> #include <linux/init.h> #include <linux/delay.h> #include <linux/pinctrl/consumer.h> #include <linux/slab.h> #include <linux/workqueue.h> #include <linux/export.h> #include <linux/debugfs.h> #include <sound/core.h> #include <sound/pcm.h> #include <sound/pcm_params.h> #include <sound/soc.h> #include <sound/soc-dpcm.h> #include <sound/soc-link.h> #include <sound/initval.h> #define soc_pcm_ret(rtd, ret) _soc_pcm_ret(rtd, __func__, ret) static inline int _soc_pcm_ret(struct snd_soc_pcm_runtime *rtd, const char *func, int ret) { /* Positive, Zero values are not errors */ if (ret >= 0) return ret; /* Negative values might be errors */ switch (ret) { case -EPROBE_DEFER: case -ENOTSUPP: case -EINVAL: break; default: dev_err(rtd->dev, "ASoC: error at %s on %s: %d\n", func, rtd->dai_link->name, ret); } return ret; } static inline void snd_soc_dpcm_stream_lock_irq(struct snd_soc_pcm_runtime *rtd, int stream) { snd_pcm_stream_lock_irq(snd_soc_dpcm_get_substream(rtd, stream)); } #define snd_soc_dpcm_stream_lock_irqsave_nested(rtd, stream, flags) \ snd_pcm_stream_lock_irqsave_nested(snd_soc_dpcm_get_substream(rtd, stream), flags) static inline void snd_soc_dpcm_stream_unlock_irq(struct snd_soc_pcm_runtime *rtd, int stream) { snd_pcm_stream_unlock_irq(snd_soc_dpcm_get_substream(rtd, stream)); } #define snd_soc_dpcm_stream_unlock_irqrestore(rtd, stream, flags) \ snd_pcm_stream_unlock_irqrestore(snd_soc_dpcm_get_substream(rtd, stream), flags) #define DPCM_MAX_BE_USERS 8 static inline const char *soc_cpu_dai_name(struct snd_soc_pcm_runtime *rtd) { return (rtd)->dai_link->num_cpus == 1 ? snd_soc_rtd_to_cpu(rtd, 0)->name : "multicpu"; } static inline const char *soc_codec_dai_name(struct snd_soc_pcm_runtime *rtd) { return (rtd)->dai_link->num_codecs == 1 ? snd_soc_rtd_to_codec(rtd, 0)->name : "multicodec"; } #ifdef CONFIG_DEBUG_FS static const char *dpcm_state_string(enum snd_soc_dpcm_state state) { switch (state) { case SND_SOC_DPCM_STATE_NEW: return "new"; case SND_SOC_DPCM_STATE_OPEN: return "open"; case SND_SOC_DPCM_STATE_HW_PARAMS: return "hw_params"; case SND_SOC_DPCM_STATE_PREPARE: return "prepare"; case SND_SOC_DPCM_STATE_START: return "start"; case SND_SOC_DPCM_STATE_STOP: return "stop"; case SND_SOC_DPCM_STATE_SUSPEND: return "suspend"; case SND_SOC_DPCM_STATE_PAUSED: return "paused"; case SND_SOC_DPCM_STATE_HW_FREE: return "hw_free"; case SND_SOC_DPCM_STATE_CLOSE: return "close"; } return "unknown"; } static ssize_t dpcm_show_state(struct snd_soc_pcm_runtime *fe, int stream, char *buf, size_t size) { struct snd_pcm_hw_params *params = &fe->dpcm[stream].hw_params; struct snd_soc_dpcm *dpcm; ssize_t offset = 0; /* FE state */ offset += scnprintf(buf + offset, size - offset, "[%s - %s]\n", fe->dai_link->name, stream ? "Capture" : "Playback"); offset += scnprintf(buf + offset, size - offset, "State: %s\n", dpcm_state_string(fe->dpcm[stream].state)); if ((fe->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) && (fe->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP)) offset += scnprintf(buf + offset, size - offset, "Hardware Params: " "Format = %s, Channels = %d, Rate = %d\n", snd_pcm_format_name(params_format(params)), params_channels(params), params_rate(params)); /* BEs state */ offset += scnprintf(buf + offset, size - offset, "Backends:\n"); if (list_empty(&fe->dpcm[stream].be_clients)) { offset += scnprintf(buf + offset, size - offset, " No active DSP links\n"); goto out; } for_each_dpcm_be(fe, stream, dpcm) { struct snd_soc_pcm_runtime *be = dpcm->be; params = &be->dpcm[stream].hw_params; offset += scnprintf(buf + offset, size - offset, "- %s\n", be->dai_link->name); offset += scnprintf(buf + offset, size - offset, " State: %s\n", dpcm_state_string(be->dpcm[stream].state)); if ((be->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) && (be->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP)) offset += scnprintf(buf + offset, size - offset, " Hardware Params: " "Format = %s, Channels = %d, Rate = %d\n", snd_pcm_format_name(params_format(params)), params_channels(params), params_rate(params)); } out: return offset; } static ssize_t dpcm_state_read_file(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct snd_soc_pcm_runtime *fe = file->private_data; ssize_t out_count = PAGE_SIZE, offset = 0, ret = 0; int stream; char *buf; if (fe->dai_link->num_cpus > 1) { dev_err(fe->dev, "%s doesn't support Multi CPU yet\n", __func__); return -EINVAL; } buf = kmalloc(out_count, GFP_KERNEL); if (!buf) return -ENOMEM; snd_soc_dpcm_mutex_lock(fe); for_each_pcm_streams(stream) if (snd_soc_dai_stream_valid(snd_soc_rtd_to_cpu(fe, 0), stream)) offset += dpcm_show_state(fe, stream, buf + offset, out_count - offset); snd_soc_dpcm_mutex_unlock(fe); ret = simple_read_from_buffer(user_buf, count, ppos, buf, offset); kfree(buf); return ret; } static const struct file_operations dpcm_state_fops = { .open = simple_open, .read = dpcm_state_read_file, .llseek = default_llseek, }; void soc_dpcm_debugfs_add(struct snd_soc_pcm_runtime *rtd) { if (!rtd->dai_link->dynamic) return; if (!rtd->card->debugfs_card_root) return; rtd->debugfs_dpcm_root = debugfs_create_dir(rtd->dai_link->name, rtd->card->debugfs_card_root); debugfs_create_file("state", 0444, rtd->debugfs_dpcm_root, rtd, &dpcm_state_fops); } static void dpcm_create_debugfs_state(struct snd_soc_dpcm *dpcm, int stream) { char *name; name = kasprintf(GFP_KERNEL, "%s:%s", dpcm->be->dai_link->name, stream ? "capture" : "playback"); if (name) { dpcm->debugfs_state = debugfs_create_dir( name, dpcm->fe->debugfs_dpcm_root); debugfs_create_u32("state", 0644, dpcm->debugfs_state, &dpcm->state); kfree(name); } } static void dpcm_remove_debugfs_state(struct snd_soc_dpcm *dpcm) { debugfs_remove_recursive(dpcm->debugfs_state); } #else static inline void dpcm_create_debugfs_state(struct snd_soc_dpcm *dpcm, int stream) { } static inline void dpcm_remove_debugfs_state(struct snd_soc_dpcm *dpcm) { } #endif /* Set FE's runtime_update state; the state is protected via PCM stream lock * for avoiding the race with trigger callback. * If the state is unset and a trigger is pending while the previous operation, * process the pending trigger action here. */ static int dpcm_fe_dai_do_trigger(struct snd_pcm_substream *substream, int cmd); static void dpcm_set_fe_update_state(struct snd_soc_pcm_runtime *fe, int stream, enum snd_soc_dpcm_update state) { struct snd_pcm_substream *substream = snd_soc_dpcm_get_substream(fe, stream); snd_soc_dpcm_stream_lock_irq(fe, stream); if (state == SND_SOC_DPCM_UPDATE_NO && fe->dpcm[stream].trigger_pending) { dpcm_fe_dai_do_trigger(substream, fe->dpcm[stream].trigger_pending - 1); fe->dpcm[stream].trigger_pending = 0; } fe->dpcm[stream].runtime_update = state; snd_soc_dpcm_stream_unlock_irq(fe, stream); } static void dpcm_set_be_update_state(struct snd_soc_pcm_runtime *be, int stream, enum snd_soc_dpcm_update state) { be->dpcm[stream].runtime_update = state; } /** * snd_soc_runtime_action() - Increment/Decrement active count for * PCM runtime components * @rtd: ASoC PCM runtime that is activated * @stream: Direction of the PCM stream * @action: Activate stream if 1. Deactivate if -1. * * Increments/Decrements the active count for all the DAIs and components * attached to a PCM runtime. * Should typically be called when a stream is opened. * * Must be called with the rtd->card->pcm_mutex being held */ void snd_soc_runtime_action(struct snd_soc_pcm_runtime *rtd, int stream, int action) { struct snd_soc_dai *dai; int i; snd_soc_dpcm_mutex_assert_held(rtd); for_each_rtd_dais(rtd, i, dai) snd_soc_dai_action(dai, stream, action); } EXPORT_SYMBOL_GPL(snd_soc_runtime_action); /** * snd_soc_runtime_ignore_pmdown_time() - Check whether to ignore the power down delay * @rtd: The ASoC PCM runtime that should be checked. * * This function checks whether the power down delay should be ignored for a * specific PCM runtime. Returns true if the delay is 0, if it the DAI link has * been configured to ignore the delay, or if none of the components benefits * from having the delay. */ bool snd_soc_runtime_ignore_pmdown_time(struct snd_soc_pcm_runtime *rtd) { struct snd_soc_component *component; bool ignore = true; int i; if (!rtd->pmdown_time || rtd->dai_link->ignore_pmdown_time) return true; for_each_rtd_components(rtd, i, component) ignore &= !component->driver->use_pmdown_time; return ignore; } /** * snd_soc_set_runtime_hwparams - set the runtime hardware parameters * @substream: the pcm substream * @hw: the hardware parameters * * Sets the substream runtime hardware parameters. */ int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream, const struct snd_pcm_hardware *hw) { substream->runtime->hw = *hw; return 0; } EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams); /* DPCM stream event, send event to FE and all active BEs. */ int dpcm_dapm_stream_event(struct snd_soc_pcm_runtime *fe, int dir, int event) { struct snd_soc_dpcm *dpcm; snd_soc_dpcm_mutex_assert_held(fe); for_each_dpcm_be(fe, dir, dpcm) { struct snd_soc_pcm_runtime *be = dpcm->be; dev_dbg(be->dev, "ASoC: BE %s event %d dir %d\n", be->dai_link->name, event, dir); if ((event == SND_SOC_DAPM_STREAM_STOP) && (be->dpcm[dir].users >= 1)) continue; snd_soc_dapm_stream_event(be, dir, event); } snd_soc_dapm_stream_event(fe, dir, event); return 0; } static void soc_pcm_set_dai_params(struct snd_soc_dai *dai, struct snd_pcm_hw_params *params) { if (params) { dai->rate = params_rate(params); dai->channels = params_channels(params); dai->sample_bits = snd_pcm_format_physical_width(params_format(params)); } else { dai->rate = 0; dai->channels = 0; dai->sample_bits = 0; } } static int soc_pcm_apply_symmetry(struct snd_pcm_substream *substream, struct snd_soc_dai *soc_dai) { struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); int ret; if (!snd_soc_dai_active(soc_dai)) return 0; #define __soc_pcm_apply_symmetry(name, NAME) \ if (soc_dai->name && (soc_dai->driver->symmetric_##name || \ rtd->dai_link->symmetric_##name)) { \ dev_dbg(soc_dai->dev, "ASoC: Symmetry forces %s to %d\n",\ #name, soc_dai->name); \ \ ret = snd_pcm_hw_constraint_single(substream->runtime, \ SNDRV_PCM_HW_PARAM_##NAME,\ soc_dai->name); \ if (ret < 0) { \ dev_err(soc_dai->dev, \ "ASoC: Unable to apply %s constraint: %d\n",\ #name, ret); \ return ret; \ } \ } __soc_pcm_apply_symmetry(rate, RATE); __soc_pcm_apply_symmetry(channels, CHANNELS); __soc_pcm_apply_symmetry(sample_bits, SAMPLE_BITS); return 0; } static int soc_pcm_params_symmetry(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params) { struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); struct snd_soc_dai d; struct snd_soc_dai *dai; struct snd_soc_dai *cpu_dai; unsigned int symmetry, i; d.name = __func__; soc_pcm_set_dai_params(&d, params); #define __soc_pcm_params_symmetry(xxx) \ symmetry = rtd->dai_link->symmetric_##xxx; \ for_each_rtd_dais(rtd, i, dai) \ symmetry |= dai->driver->symmetric_##xxx; \ \ if (symmetry) \ for_each_rtd_cpu_dais(rtd, i, cpu_dai) \ if (!snd_soc_dai_is_dummy(cpu_dai) && \ cpu_dai->xxx && cpu_dai->xxx != d.xxx) { \ dev_err(rtd->dev, "ASoC: unmatched %s symmetry: %s:%d - %s:%d\n", \ #xxx, cpu_dai->name, cpu_dai->xxx, d.name, d.xxx); \ return -EINVAL; \ } /* reject unmatched parameters when applying symmetry */ __soc_pcm_params_symmetry(rate); __soc_pcm_params_symmetry(channels); __soc_pcm_params_symmetry(sample_bits); return 0; } static void soc_pcm_update_symmetry(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); struct snd_soc_dai_link *link = rtd->dai_link; struct snd_soc_dai *dai; unsigned int symmetry, i; symmetry = link->symmetric_rate || link->symmetric_channels || link->symmetric_sample_bits; for_each_rtd_dais(rtd, i, dai) symmetry = symmetry || dai->driver->symmetric_rate || dai->driver->symmetric_channels || dai->driver->symmetric_sample_bits; if (symmetry) substream->runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX; } static void soc_pcm_set_msb(struct snd_pcm_substream *substream, int bits) { struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); int ret; if (!bits) return; ret = snd_pcm_hw_constraint_msbits(substream->runtime, 0, 0, bits); if (ret != 0) dev_warn(rtd->dev, "ASoC: Failed to set MSB %d: %d\n", bits, ret); } static void soc_pcm_apply_msb(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); struct snd_soc_dai *cpu_dai; struct snd_soc_dai *codec_dai; int stream = substream->stream; int i; unsigned int bits = 0, cpu_bits = 0; for_each_rtd_codec_dais(rtd, i, codec_dai) { struct snd_soc_pcm_stream *pcm_codec = snd_soc_dai_get_pcm_stream(codec_dai, stream); if (pcm_codec->sig_bits == 0) { bits = 0; break; } bits = max(pcm_codec->sig_bits, bits); } for_each_rtd_cpu_dais(rtd, i, cpu_dai) { struct snd_soc_pcm_stream *pcm_cpu = snd_soc_dai_get_pcm_stream(cpu_dai, stream); if (pcm_cpu->sig_bits == 0) { cpu_bits = 0; break; } cpu_bits = max(pcm_cpu->sig_bits, cpu_bits); } soc_pcm_set_msb(substream, bits); soc_pcm_set_msb(substream, cpu_bits); } static void soc_pcm_hw_init(struct snd_pcm_hardware *hw) { hw->rates = UINT_MAX; hw->rate_min = 0; hw->rate_max = UINT_MAX; hw->channels_min = 0; hw->channels_max = UINT_MAX; hw->formats = ULLONG_MAX; } static void soc_pcm_hw_update_rate(struct snd_pcm_hardware *hw, struct snd_soc_pcm_stream *p) { hw->rates = snd_pcm_rate_mask_intersect(hw->rates, p->rates); /* setup hw->rate_min/max via hw->rates first */ snd_pcm_hw_limit_rates(hw); /* update hw->rate_min/max by snd_soc_pcm_stream */ hw->rate_min = max(hw->rate_min, p->rate_min); hw->rate_max = min_not_zero(hw->rate_max, p->rate_max); } static void soc_pcm_hw_update_chan(struct snd_pcm_hardware *hw, struct snd_soc_pcm_stream *p) { hw->channels_min = max(hw->channels_min, p->channels_min); hw->channels_max = min(hw->channels_max, p->channels_max); } static void soc_pcm_hw_update_format(struct snd_pcm_hardware *hw, struct snd_soc_pcm_stream *p) { hw->formats &= p->formats; } /** * snd_soc_runtime_calc_hw() - Calculate hw limits for a PCM stream * @rtd: ASoC PCM runtime * @hw: PCM hardware parameters (output) * @stream: Direction of the PCM stream * * Calculates the subset of stream parameters supported by all DAIs * associated with the PCM stream. */ int snd_soc_runtime_calc_hw(struct snd_soc_pcm_runtime *rtd, struct snd_pcm_hardware *hw, int stream) { struct snd_soc_dai *codec_dai; struct snd_soc_dai *cpu_dai; struct snd_soc_pcm_stream *codec_stream; struct snd_soc_pcm_stream *cpu_stream; unsigned int cpu_chan_min = 0, cpu_chan_max = UINT_MAX; int i; soc_pcm_hw_init(hw); /* first calculate min/max only for CPUs in the DAI link */ for_each_rtd_cpu_dais(rtd, i, cpu_dai) { /* * Skip CPUs which don't support the current stream type. * Otherwise, since the rate, channel, and format values will * zero in that case, we would have no usable settings left, * causing the resulting setup to fail. */ if (!snd_soc_dai_stream_valid(cpu_dai, stream)) continue; cpu_stream = snd_soc_dai_get_pcm_stream(cpu_dai, stream); soc_pcm_hw_update_chan(hw, cpu_stream); soc_pcm_hw_update_rate(hw, cpu_stream); soc_pcm_hw_update_format(hw, cpu_stream); } cpu_chan_min = hw->channels_min; cpu_chan_max = hw->channels_max; /* second calculate min/max only for CODECs in the DAI link */ for_each_rtd_codec_dais(rtd, i, codec_dai) { /* * Skip CODECs which don't support the current stream type. * Otherwise, since the rate, channel, and format values will * zero in that case, we would have no usable settings left, * causing the resulting setup to fail. */ if (!snd_soc_dai_stream_valid(codec_dai, stream)) continue; codec_stream = snd_soc_dai_get_pcm_stream(codec_dai, stream); soc_pcm_hw_update_chan(hw, codec_stream); soc_pcm_hw_update_rate(hw, codec_stream); soc_pcm_hw_update_format(hw, codec_stream); } /* Verify both a valid CPU DAI and a valid CODEC DAI were found */ if (!hw->channels_min) return -EINVAL; /* * chan min/max cannot be enforced if there are multiple CODEC DAIs * connected to CPU DAI(s), use CPU DAI's directly and let * channel allocation be fixed up later */ if (rtd->dai_link->num_codecs > 1) { hw->channels_min = cpu_chan_min; hw->channels_max = cpu_chan_max; } return 0; } EXPORT_SYMBOL_GPL(snd_soc_runtime_calc_hw); static void soc_pcm_init_runtime_hw(struct snd_pcm_substream *substream) { struct snd_pcm_hardware *hw = &substream->runtime->hw; struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); u64 formats = hw->formats; /* * At least one CPU and one CODEC should match. Otherwise, we should * have bailed out on a higher level, since there would be no CPU or * CODEC to support the transfer direction in that case. */ snd_soc_runtime_calc_hw(rtd, hw, substream->stream); if (formats) hw->formats &= formats; } static int soc_pcm_components_open(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); struct snd_soc_component *component; int i, ret = 0; for_each_rtd_components(rtd, i, component) { ret = snd_soc_component_module_get_when_open(component, substream); if (ret < 0) break; ret = snd_soc_component_open(component, substream); if (ret < 0) break; } return ret; } static int soc_pcm_components_close(struct snd_pcm_substream *substream, int rollback) { struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); struct snd_soc_component *component; int i, ret = 0; for_each_rtd_components(rtd, i, component) { int r = snd_soc_component_close(component, substream, rollback); if (r < 0) ret = r; /* use last ret */ snd_soc_component_module_put_when_close(component, substream, rollback); } return ret; } static int soc_pcm_clean(struct snd_soc_pcm_runtime *rtd, struct snd_pcm_substream *substream, int rollback) { struct snd_soc_component *component; struct snd_soc_dai *dai; int i; snd_soc_dpcm_mutex_assert_held(rtd); if (!rollback) { snd_soc_runtime_deactivate(rtd, substream->stream); /* Make sure DAI parameters cleared if the DAI becomes inactive */ for_each_rtd_dais(rtd, i, dai) { if (snd_soc_dai_active(dai) == 0 && (dai->rate || dai->channels || dai->sample_bits)) soc_pcm_set_dai_params(dai, NULL); } } for_each_rtd_dais(rtd, i, dai) snd_soc_dai_shutdown(dai, substream, rollback); snd_soc_link_shutdown(substream, rollback); soc_pcm_components_close(substream, rollback); snd_soc_pcm_component_pm_runtime_put(rtd, substream, rollback); for_each_rtd_components(rtd, i, component) if (!snd_soc_component_active(component)) pinctrl_pm_select_sleep_state(component->dev); return 0; } /* * Called by ALSA when a PCM substream is closed. Private data can be * freed here. The cpu DAI, codec DAI, machine and components are also * shutdown. */ static int __soc_pcm_close(struct snd_soc_pcm_runtime *rtd, struct snd_pcm_substream *substream) { return soc_pcm_clean(rtd, substream, 0); } /* PCM close ops for non-DPCM streams */ static int soc_pcm_close(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); snd_soc_dpcm_mutex_lock(rtd); __soc_pcm_close(rtd, substream); snd_soc_dpcm_mutex_unlock(rtd); return 0; } static int soc_hw_sanity_check(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); struct snd_pcm_hardware *hw = &substream->runtime->hw; const char *name_cpu = soc_cpu_dai_name(rtd); const char *name_codec = soc_codec_dai_name(rtd); const char *err_msg; struct device *dev = rtd->dev; err_msg = "rates"; if (!hw->rates) goto config_err; err_msg = "formats"; if (!hw->formats) goto config_err; err_msg = "channels"; if (!hw->channels_min || !hw->channels_max || hw->channels_min > hw->channels_max) goto config_err; dev_dbg(dev, "ASoC: %s <-> %s info:\n", name_codec, name_cpu); dev_dbg(dev, "ASoC: rate mask 0x%x\n", hw->rates); dev_dbg(dev, "ASoC: ch min %d max %d\n", hw->channels_min, hw->channels_max); dev_dbg(dev, "ASoC: rate min %d max %d\n", hw->rate_min, hw->rate_max); return 0; config_err: dev_err(dev, "ASoC: %s <-> %s No matching %s\n", name_codec, name_cpu, err_msg); return -EINVAL; } /* * Called by ALSA when a PCM substream is opened, the runtime->hw record is * then initialized and any private data can be allocated. This also calls * startup for the cpu DAI, component, machine and codec DAI. */ static int __soc_pcm_open(struct snd_soc_pcm_runtime *rtd, struct snd_pcm_substream *substream) { struct snd_soc_component *component; struct snd_soc_dai *dai; int i, ret = 0; snd_soc_dpcm_mutex_assert_held(rtd); for_each_rtd_components(rtd, i, component) pinctrl_pm_select_default_state(component->dev); ret = snd_soc_pcm_component_pm_runtime_get(rtd, substream); if (ret < 0) goto err; ret = soc_pcm_components_open(substream); if (ret < 0) goto err; ret = snd_soc_link_startup(substream); if (ret < 0) goto err; /* startup the audio subsystem */ for_each_rtd_dais(rtd, i, dai) { ret = snd_soc_dai_startup(dai, substream); if (ret < 0) goto err; } /* Dynamic PCM DAI links compat checks use dynamic capabilities */ if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm) goto dynamic; /* Check that the codec and cpu DAIs are compatible */ soc_pcm_init_runtime_hw(substream); soc_pcm_update_symmetry(substream); ret = soc_hw_sanity_check(substream); if (ret < 0) goto err; soc_pcm_apply_msb(substream); /* Symmetry only applies if we've already got an active stream. */ for_each_rtd_dais(rtd, i, dai) { ret = soc_pcm_apply_symmetry(substream, dai); if (ret != 0) goto err; } dynamic: snd_soc_runtime_activate(rtd, substream->stream); ret = 0; err: if (ret < 0) soc_pcm_clean(rtd, substream, 1); return soc_pcm_ret(rtd, ret); } /* PCM open ops for non-DPCM streams */ static int soc_pcm_open(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); int ret; snd_soc_dpcm_mutex_lock(rtd); ret = __soc_pcm_open(rtd, substream); snd_soc_dpcm_mutex_unlock(rtd); return ret; } /* * Called by ALSA when the PCM substream is prepared, can set format, sample * rate, etc. This function is non atomic and can be called multiple times, * it can refer to the runtime info. */ static int __soc_pcm_prepare(struct snd_soc_pcm_runtime *rtd, struct snd_pcm_substream *substream) { struct snd_soc_dai *dai; int i, ret = 0; snd_soc_dpcm_mutex_assert_held(rtd); ret = snd_soc_link_prepare(substream); if (ret < 0) goto out; ret = snd_soc_pcm_component_prepare(substream); if (ret < 0) goto out; ret = snd_soc_pcm_dai_prepare(substream); if (ret < 0) goto out; /* cancel any delayed stream shutdown that is pending */ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && rtd->pop_wait) { rtd->pop_wait = 0; cancel_delayed_work(&rtd->delayed_work); } snd_soc_dapm_stream_event(rtd, substream->stream, SND_SOC_DAPM_STREAM_START); for_each_rtd_dais(rtd, i, dai) { if (dai->driver->ops && !dai->driver->ops->mute_unmute_on_trigger) snd_soc_dai_digital_mute(dai, 0, substream->stream); } out: return soc_pcm_ret(rtd, ret); } /* PCM prepare ops for non-DPCM streams */ static int soc_pcm_prepare(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); int ret; snd_soc_dpcm_mutex_lock(rtd); ret = __soc_pcm_prepare(rtd, substream); snd_soc_dpcm_mutex_unlock(rtd); return ret; } static void soc_pcm_codec_params_fixup(struct snd_pcm_hw_params *params, unsigned int mask) { struct snd_interval *interval; int channels = hweight_long(mask); interval = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); interval->min = channels; interval->max = channels; } static int soc_pcm_hw_clean(struct snd_soc_pcm_runtime *rtd, struct snd_pcm_substream *substream, int rollback) { struct snd_soc_dai *dai; int i; snd_soc_dpcm_mutex_assert_held(rtd); /* clear the corresponding DAIs parameters when going to be inactive */ for_each_rtd_dais(rtd, i, dai) { if (snd_soc_dai_active(dai) == 1) soc_pcm_set_dai_params(dai, NULL); if (snd_soc_dai_stream_active(dai, substream->stream) == 1) { if (dai->driver->ops && !dai->driver->ops->mute_unmute_on_trigger) snd_soc_dai_digital_mute(dai, 1, substream->stream); } } /* run the stream event */ snd_soc_dapm_stream_stop(rtd, substream->stream); /* free any machine hw params */ snd_soc_link_hw_free(substream, rollback); /* free any component resources */ snd_soc_pcm_component_hw_free(substream, rollback); /* now free hw params for the DAIs */ for_each_rtd_dais(rtd, i, dai) if (snd_soc_dai_stream_valid(dai, substream->stream)) snd_soc_dai_hw_free(dai, substream, rollback); return 0; } /* * Frees resources allocated by hw_params, can be called multiple times */ static int __soc_pcm_hw_free(struct snd_soc_pcm_runtime *rtd, struct snd_pcm_substream *substream) { return soc_pcm_hw_clean(rtd, substream, 0); } /* hw_free PCM ops for non-DPCM streams */ static int soc_pcm_hw_free(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); int ret; snd_soc_dpcm_mutex_lock(rtd); ret = __soc_pcm_hw_free(rtd, substream); snd_soc_dpcm_mutex_unlock(rtd); return ret; } /* * Called by ALSA when the hardware params are set by application. This * function can also be called multiple times and can allocate buffers * (using snd_pcm_lib_* ). It's non-atomic. */ static int __soc_pcm_hw_params(struct snd_soc_pcm_runtime *rtd, struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params) { struct snd_soc_dai *cpu_dai; struct snd_soc_dai *codec_dai; struct snd_pcm_hw_params tmp_params; int i, ret = 0; snd_soc_dpcm_mutex_assert_held(rtd); ret = soc_pcm_params_symmetry(substream, params); if (ret) goto out; ret = snd_soc_link_hw_params(substream, params); if (ret < 0) goto out; for_each_rtd_codec_dais(rtd, i, codec_dai) { unsigned int tdm_mask = snd_soc_dai_tdm_mask_get(codec_dai, substream->stream); /* * Skip CODECs which don't support the current stream type, * the idea being that if a CODEC is not used for the currently * set up transfer direction, it should not need to be * configured, especially since the configuration used might * not even be supported by that CODEC. There may be cases * however where a CODEC needs to be set up although it is * actually not being used for the transfer, e.g. if a * capture-only CODEC is acting as an LRCLK and/or BCLK master * for the DAI link including a playback-only CODEC. * If this becomes necessary, we will have to augment the * machine driver setup with information on how to act, so * we can do the right thing here. */ if (!snd_soc_dai_stream_valid(codec_dai, substream->stream)) continue; /* copy params for each codec */ tmp_params = *params; /* fixup params based on TDM slot masks */ if (tdm_mask) soc_pcm_codec_params_fixup(&tmp_params, tdm_mask); ret = snd_soc_dai_hw_params(codec_dai, substream, &tmp_params); if(ret < 0) goto out; soc_pcm_set_dai_params(codec_dai, &tmp_params); snd_soc_dapm_update_dai(substream, &tmp_params, codec_dai); } for_each_rtd_cpu_dais(rtd, i, cpu_dai) { unsigned int ch_mask = 0; int j; /* * Skip CPUs which don't support the current stream * type. See soc_pcm_init_runtime_hw() for more details */ if (!snd_soc_dai_stream_valid(cpu_dai, substream->stream)) continue; /* copy params for each cpu */ tmp_params = *params; if (!rtd->dai_link->codec_ch_maps) goto hw_params; /* * construct cpu channel mask by combining ch_mask of each * codec which maps to the cpu. */ for_each_rtd_codec_dais(rtd, j, codec_dai) { if (rtd->dai_link->codec_ch_maps[j].connected_cpu_id == i) ch_mask |= rtd->dai_link->codec_ch_maps[j].ch_mask; } /* fixup cpu channel number */ if (ch_mask) soc_pcm_codec_params_fixup(&tmp_params, ch_mask); hw_params: ret = snd_soc_dai_hw_params(cpu_dai, substream, &tmp_params); if (ret < 0) goto out; /* store the parameters for each DAI */ soc_pcm_set_dai_params(cpu_dai, &tmp_params); snd_soc_dapm_update_dai(substream, &tmp_params, cpu_dai); } ret = snd_soc_pcm_component_hw_params(substream, params); out: if (ret < 0) soc_pcm_hw_clean(rtd, substream, 1); return soc_pcm_ret(rtd, ret); } /* hw_params PCM ops for non-DPCM streams */ static int soc_pcm_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params) { struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); int ret; snd_soc_dpcm_mutex_lock(rtd); ret = __soc_pcm_hw_params(rtd, substream, params); snd_soc_dpcm_mutex_unlock(rtd); return ret; } #define TRIGGER_MAX 3 static int (* const trigger[][TRIGGER_MAX])(struct snd_pcm_substream *substream, int cmd, int rollback) = { [SND_SOC_TRIGGER_ORDER_DEFAULT] = { snd_soc_link_trigger, snd_soc_pcm_component_trigger, snd_soc_pcm_dai_trigger, }, [SND_SOC_TRIGGER_ORDER_LDC] = { snd_soc_link_trigger, snd_soc_pcm_dai_trigger, snd_soc_pcm_component_trigger, }, }; static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd) { struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); struct snd_soc_component *component; int ret = 0, r = 0, i; int rollback = 0; int start = 0, stop = 0; /* * select START/STOP sequence */ for_each_rtd_components(rtd, i, component) { if (component->driver->trigger_start) start = component->driver->trigger_start; if (component->driver->trigger_stop) stop = component->driver->trigger_stop; } if (rtd->dai_link->trigger_start) start = rtd->dai_link->trigger_start; if (rtd->dai_link->trigger_stop) stop = rtd->dai_link->trigger_stop; if (start < 0 || start >= SND_SOC_TRIGGER_ORDER_MAX || stop < 0 || stop >= SND_SOC_TRIGGER_ORDER_MAX) return -EINVAL; /* * START */ switch (cmd) { case SNDRV_PCM_TRIGGER_START: case SNDRV_PCM_TRIGGER_RESUME: case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: for (i = 0; i < TRIGGER_MAX; i++) { r = trigger[start][i](substream, cmd, 0); if (r < 0) break; } } /* * Rollback if START failed * find correspond STOP command */ if (r < 0) { rollback = 1; ret = r; switch (cmd) { case SNDRV_PCM_TRIGGER_START: cmd = SNDRV_PCM_TRIGGER_STOP; break; case SNDRV_PCM_TRIGGER_RESUME: cmd = SNDRV_PCM_TRIGGER_SUSPEND; break; case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: cmd = SNDRV_PCM_TRIGGER_PAUSE_PUSH; break; } } /* * STOP */ switch (cmd) { case SNDRV_PCM_TRIGGER_STOP: case SNDRV_PCM_TRIGGER_SUSPEND: case SNDRV_PCM_TRIGGER_PAUSE_PUSH: for (i = TRIGGER_MAX; i > 0; i--) { r = trigger[stop][i - 1](substream, cmd, rollback); if (r < 0) ret = r; } } return ret; } /* * soc level wrapper for pointer callback * If cpu_dai, codec_dai, component driver has the delay callback, then * the runtime->delay will be updated via snd_soc_pcm_component/dai_delay(). */ static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream) { struct snd_pcm_runtime *runtime = substream->runtime; snd_pcm_uframes_t offset = 0; snd_pcm_sframes_t codec_delay = 0; snd_pcm_sframes_t cpu_delay = 0; offset = snd_soc_pcm_component_pointer(substream); /* should be called *after* snd_soc_pcm_component_pointer() */ snd_soc_pcm_dai_delay(substream, &cpu_delay, &codec_delay); snd_soc_pcm_component_delay(substream, &cpu_delay, &codec_delay); runtime->delay = cpu_delay + codec_delay; return offset; } /* connect a FE and BE */ static int dpcm_be_connect(struct snd_soc_pcm_runtime *fe, struct snd_soc_pcm_runtime *be, int stream) { struct snd_pcm_substream *fe_substream; struct snd_pcm_substream *be_substream; struct snd_soc_dpcm *dpcm; snd_soc_dpcm_mutex_assert_held(fe); /* only add new dpcms */ for_each_dpcm_be(fe, stream, dpcm) { if (dpcm->be == be && dpcm->fe == fe) return 0; } fe_substream = snd_soc_dpcm_get_substream(fe, stream); be_substream = snd_soc_dpcm_get_substream(be, stream); if (!fe_substream->pcm->nonatomic && be_substream->pcm->nonatomic) { dev_err(be->dev, "%s: FE is atomic but BE is nonatomic, invalid configuration\n", __func__); return -EINVAL; } if (fe_substream->pcm->nonatomic && !be_substream->pcm->nonatomic) { dev_dbg(be->dev, "FE is nonatomic but BE is not, forcing BE as nonatomic\n"); be_substream->pcm->nonatomic = 1; } dpcm = kzalloc(sizeof(struct snd_soc_dpcm), GFP_KERNEL); if (!dpcm) return -ENOMEM; dpcm->be = be; dpcm->fe = fe; dpcm->state = SND_SOC_DPCM_LINK_STATE_NEW; snd_soc_dpcm_stream_lock_irq(fe, stream); list_add(&dpcm->list_be, &fe->dpcm[stream].be_clients); list_add(&dpcm->list_fe, &be->dpcm[stream].fe_clients); snd_soc_dpcm_stream_unlock_irq(fe, stream); dev_dbg(fe->dev, "connected new DPCM %s path %s %s %s\n", stream ? "capture" : "playback", fe->dai_link->name, stream ? "<-" : "->", be->dai_link->name); dpcm_create_debugfs_state(dpcm, stream); return 1; } /* reparent a BE onto another FE */ static void dpcm_be_reparent(struct snd_soc_pcm_runtime *fe, struct snd_soc_pcm_runtime *be, int stream) { struct snd_soc_dpcm *dpcm; struct snd_pcm_substream *fe_substream, *be_substream; /* reparent if BE is connected to other FEs */ if (!be->dpcm[stream].users) return; be_substream = snd_soc_dpcm_get_substream(be, stream); if (!be_substream) return; for_each_dpcm_fe(be, stream, dpcm) { if (dpcm->fe == fe) continue; dev_dbg(fe->dev, "reparent %s path %s %s %s\n", stream ? "capture" : "playback", dpcm->fe->dai_link->name, stream ? "<-" : "->", dpcm->be->dai_link->name); fe_substream = snd_soc_dpcm_get_substream(dpcm->fe, stream); be_substream->runtime = fe_substream->runtime; break; } } /* disconnect a BE and FE */ void dpcm_be_disconnect(struct snd_soc_pcm_runtime *fe, int stream) { struct snd_soc_dpcm *dpcm, *d; LIST_HEAD(deleted_dpcms); snd_soc_dpcm_mutex_assert_held(fe); snd_soc_dpcm_stream_lock_irq(fe, stream); for_each_dpcm_be_safe(fe, stream, dpcm, d) { dev_dbg(fe->dev, "ASoC: BE %s disconnect check for %s\n", stream ? "capture" : "playback", dpcm->be->dai_link->name); if (dpcm->state != SND_SOC_DPCM_LINK_STATE_FREE) continue; dev_dbg(fe->dev, "freed DSP %s path %s %s %s\n", stream ? "capture" : "playback", fe->dai_link->name, stream ? "<-" : "->", dpcm->be->dai_link->name); /* BEs still alive need new FE */ dpcm_be_reparent(fe, dpcm->be, stream); list_del(&dpcm->list_be); list_move(&dpcm->list_fe, &deleted_dpcms); } snd_soc_dpcm_stream_unlock_irq(fe, stream); while (!list_empty(&deleted_dpcms)) { dpcm = list_first_entry(&deleted_dpcms, struct snd_soc_dpcm, list_fe); list_del(&dpcm->list_fe); dpcm_remove_debugfs_state(dpcm); kfree(dpcm); } } /* get BE for DAI widget and stream */ static struct snd_soc_pcm_runtime *dpcm_get_be(struct snd_soc_card *card, struct snd_soc_dapm_widget *widget, int stream) { struct snd_soc_pcm_runtime *be; struct snd_soc_dapm_widget *w; struct snd_soc_dai *dai; int i; dev_dbg(card->dev, "ASoC: find BE for widget %s\n", widget->name); for_each_card_rtds(card, be) { if (!be->dai_link->no_pcm) continue; if (!snd_soc_dpcm_get_substream(be, stream)) continue; for_each_rtd_dais(be, i, dai) { w = snd_soc_dai_get_widget(dai, stream); dev_dbg(card->dev, "ASoC: try BE : %s\n", w ? w->name : "(not set)"); if (w == widget) return be; } } /* Widget provided is not a BE */ return NULL; } int widget_in_list(struct snd_soc_dapm_widget_list *list, struct snd_soc_dapm_widget *widget) { struct snd_soc_dapm_widget *w; int i; for_each_dapm_widgets(list, i, w) if (widget == w) return 1; return 0; } EXPORT_SYMBOL_GPL(widget_in_list); bool dpcm_end_walk_at_be(struct snd_soc_dapm_widget *widget, enum snd_soc_dapm_direction dir) { struct snd_soc_card *card = widget->dapm->card; struct snd_soc_pcm_runtime *rtd; int stream; /* adjust dir to stream */ if (dir == SND_SOC_DAPM_DIR_OUT) stream = SNDRV_PCM_STREAM_PLAYBACK; else stream = SNDRV_PCM_STREAM_CAPTURE; rtd = dpcm_get_be(card, widget, stream); if (rtd) return true; return false; } EXPORT_SYMBOL_GPL(dpcm_end_walk_at_be); int dpcm_path_get(struct snd_soc_pcm_runtime *fe, int stream, struct snd_soc_dapm_widget_list **list) { struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(fe, 0); int paths; if (fe->dai_link->num_cpus > 1) { dev_err(fe->dev, "%s doesn't support Multi CPU yet\n", __func__); return -EINVAL; } /* get number of valid DAI paths and their widgets */ paths = snd_soc_dapm_dai_get_connected_widgets(cpu_dai, stream, list, fe->card->component_chaining ? NULL : dpcm_end_walk_at_be); if (paths > 0) dev_dbg(fe->dev, "ASoC: found %d audio %s paths\n", paths, stream ? "capture" : "playback"); else if (paths == 0) dev_dbg(fe->dev, "ASoC: %s no valid %s path\n", fe->dai_link->name, stream ? "capture" : "playback"); return paths; } void dpcm_path_put(struct snd_soc_dapm_widget_list **list) { snd_soc_dapm_dai_free_widgets(list); } static bool dpcm_be_is_active(struct snd_soc_dpcm *dpcm, int stream, struct snd_soc_dapm_widget_list *list) { struct snd_soc_dai *dai; unsigned int i; /* is there a valid DAI widget for this BE */ for_each_rtd_dais(dpcm->be, i, dai) { struct snd_soc_dapm_widget *widget = snd_soc_dai_get_widget(dai, stream); /* * The BE is pruned only if none of the dai * widgets are in the active list. */ if (widget && widget_in_list(list, widget)) return true; } return false; } static int dpcm_prune_paths(struct snd_soc_pcm_runtime *fe, int stream, struct snd_soc_dapm_widget_list **list_) { struct snd_soc_dpcm *dpcm; int prune = 0; /* Destroy any old FE <--> BE connections */ for_each_dpcm_be(fe, stream, dpcm) { if (dpcm_be_is_active(dpcm, stream, *list_)) continue; dev_dbg(fe->dev, "ASoC: pruning %s BE %s for %s\n", stream ? "capture" : "playback", dpcm->be->dai_link->name, fe->dai_link->name); dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; dpcm_set_be_update_state(dpcm->be, stream, SND_SOC_DPCM_UPDATE_BE); prune++; } dev_dbg(fe->dev, "ASoC: found %d old BE paths for pruning\n", prune); return prune; } static int dpcm_add_paths(struct snd_soc_pcm_runtime *fe, int stream, struct snd_soc_dapm_widget_list **list_) { struct snd_soc_card *card = fe->card; struct snd_soc_dapm_widget_list *list = *list_; struct snd_soc_pcm_runtime *be; struct snd_soc_dapm_widget *widget; struct snd_pcm_substream *fe_substream = snd_soc_dpcm_get_substream(fe, stream); int i, new = 0, err; /* don't connect if FE is not running */ if (!fe_substream->runtime && !fe->fe_compr) return new; /* Create any new FE <--> BE connections */ for_each_dapm_widgets(list, i, widget) { switch (widget->id) { case snd_soc_dapm_dai_in: if (stream != SNDRV_PCM_STREAM_PLAYBACK) continue; break; case snd_soc_dapm_dai_out: if (stream != SNDRV_PCM_STREAM_CAPTURE) continue; break; default: continue; } /* is there a valid BE rtd for this widget */ be = dpcm_get_be(card, widget, stream); if (!be) { dev_dbg(fe->dev, "ASoC: no BE found for %s\n", widget->name); continue; } /* * Filter for systems with 'component_chaining' enabled. * This helps to avoid unnecessary re-configuration of an * already active BE on such systems. */ if (fe->card->component_chaining && (be->dpcm[stream].state != SND_SOC_DPCM_STATE_NEW) && (be->dpcm[stream].state != SND_SOC_DPCM_STATE_CLOSE)) continue; /* newly connected FE and BE */ err = dpcm_be_connect(fe, be, stream); if (err < 0) { dev_err(fe->dev, "ASoC: can't connect %s\n", widget->name); break; } else if (err == 0) /* already connected */ continue; /* new */ dpcm_set_be_update_state(be, stream, SND_SOC_DPCM_UPDATE_BE); new++; } dev_dbg(fe->dev, "ASoC: found %d new BE paths\n", new); return new; } /* * Find the corresponding BE DAIs that source or sink audio to this * FE substream. */ int dpcm_process_paths(struct snd_soc_pcm_runtime *fe, int stream, struct snd_soc_dapm_widget_list **list, int new) { if (new) return dpcm_add_paths(fe, stream, list); else return dpcm_prune_paths(fe, stream, list); } void dpcm_clear_pending_state(struct snd_soc_pcm_runtime *fe, int stream) { struct snd_soc_dpcm *dpcm; for_each_dpcm_be(fe, stream, dpcm) dpcm_set_be_update_state(dpcm->be, stream, SND_SOC_DPCM_UPDATE_NO); } void dpcm_be_dai_stop(struct snd_soc_pcm_runtime *fe, int stream, int do_hw_free, struct snd_soc_dpcm *last) { struct snd_soc_dpcm *dpcm; /* disable any enabled and non active backends */ for_each_dpcm_be(fe, stream, dpcm) { struct snd_soc_pcm_runtime *be = dpcm->be; struct snd_pcm_substream *be_substream = snd_soc_dpcm_get_substream(be, stream); if (dpcm == last) return; /* is this op for this BE ? */ if (!snd_soc_dpcm_be_can_update(fe, be, stream)) continue; if (be->dpcm[stream].users == 0) { dev_err(be->dev, "ASoC: no users %s at close - state %d\n", stream ? "capture" : "playback", be->dpcm[stream].state); continue; } if (--be->dpcm[stream].users != 0) continue; if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) { if (!do_hw_free) continue; if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) { __soc_pcm_hw_free(be, be_substream); be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE; } } __soc_pcm_close(be, be_substream); be_substream->runtime = NULL; be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; } } int dpcm_be_dai_startup(struct snd_soc_pcm_runtime *fe, int stream) { struct snd_pcm_substream *fe_substream = snd_soc_dpcm_get_substream(fe, stream); struct snd_soc_pcm_runtime *be; struct snd_soc_dpcm *dpcm; int err, count = 0; /* only startup BE DAIs that are either sinks or sources to this FE DAI */ for_each_dpcm_be(fe, stream, dpcm) { struct snd_pcm_substream *be_substream; be = dpcm->be; be_substream = snd_soc_dpcm_get_substream(be, stream); if (!be_substream) { dev_err(be->dev, "ASoC: no backend %s stream\n", stream ? "capture" : "playback"); continue; } /* is this op for this BE ? */ if (!snd_soc_dpcm_be_can_update(fe, be, stream)) continue; /* first time the dpcm is open ? */ if (be->dpcm[stream].users == DPCM_MAX_BE_USERS) { dev_err(be->dev, "ASoC: too many users %s at open %d\n", stream ? "capture" : "playback", be->dpcm[stream].state); continue; } if (be->dpcm[stream].users++ != 0) continue; if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_NEW) && (be->dpcm[stream].state != SND_SOC_DPCM_STATE_CLOSE)) continue; dev_dbg(be->dev, "ASoC: open %s BE %s\n", stream ? "capture" : "playback", be->dai_link->name); be_substream->runtime = fe_substream->runtime; err = __soc_pcm_open(be, be_substream); if (err < 0) { be->dpcm[stream].users--; if (be->dpcm[stream].users < 0) dev_err(be->dev, "ASoC: no users %s at unwind %d\n", stream ? "capture" : "playback", be->dpcm[stream].state); be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; goto unwind; } be->dpcm[stream].be_start = 0; be->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN; count++; } return count; unwind: dpcm_be_dai_startup_rollback(fe, stream, dpcm); return soc_pcm_ret(fe, err); } static void dpcm_runtime_setup_fe(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *fe = snd_soc_substream_to_rtd(substream); struct snd_pcm_runtime *runtime = substream->runtime; struct snd_pcm_hardware *hw = &runtime->hw; struct snd_soc_dai *dai; int stream = substream->stream; u64 formats = hw->formats; int i; soc_pcm_hw_init(hw); if (formats) hw->formats &= formats; for_each_rtd_cpu_dais(fe, i, dai) { struct snd_soc_pcm_stream *cpu_stream; /* * Skip CPUs which don't support the current stream * type. See soc_pcm_init_runtime_hw() for more details */ if (!snd_soc_dai_stream_valid(dai, stream)) continue; cpu_stream = snd_soc_dai_get_pcm_stream(dai, stream); soc_pcm_hw_update_rate(hw, cpu_stream); soc_pcm_hw_update_chan(hw, cpu_stream); soc_pcm_hw_update_format(hw, cpu_stream); } } static void dpcm_runtime_setup_be_format(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *fe = snd_soc_substream_to_rtd(substream); struct snd_pcm_runtime *runtime = substream->runtime; struct snd_pcm_hardware *hw = &runtime->hw; struct snd_soc_dpcm *dpcm; struct snd_soc_dai *dai; int stream = substream->stream; if (!fe->dai_link->dpcm_merged_format) return; /* * It returns merged BE codec format * if FE want to use it (= dpcm_merged_format) */ for_each_dpcm_be(fe, stream, dpcm) { struct snd_soc_pcm_runtime *be = dpcm->be; struct snd_soc_pcm_stream *codec_stream; int i; for_each_rtd_codec_dais(be, i, dai) { /* * Skip CODECs which don't support the current stream * type. See soc_pcm_init_runtime_hw() for more details */ if (!snd_soc_dai_stream_valid(dai, stream)) continue; codec_stream = snd_soc_dai_get_pcm_stream(dai, stream); soc_pcm_hw_update_format(hw, codec_stream); } } } static void dpcm_runtime_setup_be_chan(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *fe = snd_soc_substream_to_rtd(substream); struct snd_pcm_runtime *runtime = substream->runtime; struct snd_pcm_hardware *hw = &runtime->hw; struct snd_soc_dpcm *dpcm; int stream = substream->stream; if (!fe->dai_link->dpcm_merged_chan) return; /* * It returns merged BE codec channel; * if FE want to use it (= dpcm_merged_chan) */ for_each_dpcm_be(fe, stream, dpcm) { struct snd_soc_pcm_runtime *be = dpcm->be; struct snd_soc_pcm_stream *cpu_stream; struct snd_soc_dai *dai; int i; for_each_rtd_cpu_dais(be, i, dai) { /* * Skip CPUs which don't support the current stream * type. See soc_pcm_init_runtime_hw() for more details */ if (!snd_soc_dai_stream_valid(dai, stream)) continue; cpu_stream = snd_soc_dai_get_pcm_stream(dai, stream); soc_pcm_hw_update_chan(hw, cpu_stream); } /* * chan min/max cannot be enforced if there are multiple CODEC * DAIs connected to a single CPU DAI, use CPU DAI's directly */ if (be->dai_link->num_codecs == 1) { struct snd_soc_pcm_stream *codec_stream = snd_soc_dai_get_pcm_stream( snd_soc_rtd_to_codec(be, 0), stream); soc_pcm_hw_update_chan(hw, codec_stream); } } } static void dpcm_runtime_setup_be_rate(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *fe = snd_soc_substream_to_rtd(substream); struct snd_pcm_runtime *runtime = substream->runtime; struct snd_pcm_hardware *hw = &runtime->hw; struct snd_soc_dpcm *dpcm; int stream = substream->stream; if (!fe->dai_link->dpcm_merged_rate) return; /* * It returns merged BE codec channel; * if FE want to use it (= dpcm_merged_chan) */ for_each_dpcm_be(fe, stream, dpcm) { struct snd_soc_pcm_runtime *be = dpcm->be; struct snd_soc_pcm_stream *pcm; struct snd_soc_dai *dai; int i; for_each_rtd_dais(be, i, dai) { /* * Skip DAIs which don't support the current stream * type. See soc_pcm_init_runtime_hw() for more details */ if (!snd_soc_dai_stream_valid(dai, stream)) continue; pcm = snd_soc_dai_get_pcm_stream(dai, stream); soc_pcm_hw_update_rate(hw, pcm); } } } static int dpcm_apply_symmetry(struct snd_pcm_substream *fe_substream, int stream) { struct snd_soc_dpcm *dpcm; struct snd_soc_pcm_runtime *fe = snd_soc_substream_to_rtd(fe_substream); struct snd_soc_dai *fe_cpu_dai; int err = 0; int i; /* apply symmetry for FE */ soc_pcm_update_symmetry(fe_substream); for_each_rtd_cpu_dais (fe, i, fe_cpu_dai) { /* Symmetry only applies if we've got an active stream. */ err = soc_pcm_apply_symmetry(fe_substream, fe_cpu_dai); if (err < 0) goto error; } /* apply symmetry for BE */ for_each_dpcm_be(fe, stream, dpcm) { struct snd_soc_pcm_runtime *be = dpcm->be; struct snd_pcm_substream *be_substream = snd_soc_dpcm_get_substream(be, stream); struct snd_soc_pcm_runtime *rtd; struct snd_soc_dai *dai; /* A backend may not have the requested substream */ if (!be_substream) continue; rtd = snd_soc_substream_to_rtd(be_substream); if (rtd->dai_link->be_hw_params_fixup) continue; soc_pcm_update_symmetry(be_substream); /* Symmetry only applies if we've got an active stream. */ for_each_rtd_dais(rtd, i, dai) { err = soc_pcm_apply_symmetry(fe_substream, dai); if (err < 0) goto error; } } error: return soc_pcm_ret(fe, err); } static int dpcm_fe_dai_startup(struct snd_pcm_substream *fe_substream) { struct snd_soc_pcm_runtime *fe = snd_soc_substream_to_rtd(fe_substream); int stream = fe_substream->stream, ret = 0; dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE); ret = dpcm_be_dai_startup(fe, stream); if (ret < 0) goto be_err; dev_dbg(fe->dev, "ASoC: open FE %s\n", fe->dai_link->name); /* start the DAI frontend */ ret = __soc_pcm_open(fe, fe_substream); if (ret < 0) goto unwind; fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN; dpcm_runtime_setup_fe(fe_substream); dpcm_runtime_setup_be_format(fe_substream); dpcm_runtime_setup_be_chan(fe_substream); dpcm_runtime_setup_be_rate(fe_substream); ret = dpcm_apply_symmetry(fe_substream, stream); unwind: if (ret < 0) dpcm_be_dai_startup_unwind(fe, stream); be_err: dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO); return soc_pcm_ret(fe, ret); } static int dpcm_fe_dai_shutdown(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *fe = snd_soc_substream_to_rtd(substream); int stream = substream->stream; snd_soc_dpcm_mutex_assert_held(fe); dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE); /* shutdown the BEs */ dpcm_be_dai_shutdown(fe, stream); dev_dbg(fe->dev, "ASoC: close FE %s\n", fe->dai_link->name); /* now shutdown the frontend */ __soc_pcm_close(fe, substream); /* run the stream stop event */ dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_STOP); fe->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO); return 0; } void dpcm_be_dai_hw_free(struct snd_soc_pcm_runtime *fe, int stream) { struct snd_soc_dpcm *dpcm; /* only hw_params backends that are either sinks or sources * to this frontend DAI */ for_each_dpcm_be(fe, stream, dpcm) { struct snd_soc_pcm_runtime *be = dpcm->be; struct snd_pcm_substream *be_substream = snd_soc_dpcm_get_substream(be, stream); /* is this op for this BE ? */ if (!snd_soc_dpcm_be_can_update(fe, be, stream)) continue; /* only free hw when no longer used - check all FEs */ if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) continue; /* do not free hw if this BE is used by other FE */ if (be->dpcm[stream].users > 1) continue; if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) && (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) && (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED) && (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP) && (be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND)) continue; dev_dbg(be->dev, "ASoC: hw_free BE %s\n", be->dai_link->name); __soc_pcm_hw_free(be, be_substream); be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE; } } static int dpcm_fe_dai_hw_free(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *fe = snd_soc_substream_to_rtd(substream); int stream = substream->stream; snd_soc_dpcm_mutex_lock(fe); dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE); dev_dbg(fe->dev, "ASoC: hw_free FE %s\n", fe->dai_link->name); /* call hw_free on the frontend */ soc_pcm_hw_clean(fe, substream, 0); /* only hw_params backends that are either sinks or sources * to this frontend DAI */ dpcm_be_dai_hw_free(fe, stream); fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE; dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO); snd_soc_dpcm_mutex_unlock(fe); return 0; } int dpcm_be_dai_hw_params(struct snd_soc_pcm_runtime *fe, int stream) { struct snd_soc_pcm_runtime *be; struct snd_pcm_substream *be_substream; struct snd_soc_dpcm *dpcm; int ret; for_each_dpcm_be(fe, stream, dpcm) { struct snd_pcm_hw_params hw_params; be = dpcm->be; be_substream = snd_soc_dpcm_get_substream(be, stream); /* is this op for this BE ? */ if (!snd_soc_dpcm_be_can_update(fe, be, stream)) continue; /* copy params for each dpcm */ memcpy(&hw_params, &fe->dpcm[stream].hw_params, sizeof(struct snd_pcm_hw_params)); /* perform any hw_params fixups */ ret = snd_soc_link_be_hw_params_fixup(be, &hw_params); if (ret < 0) goto unwind; /* copy the fixed-up hw params for BE dai */ memcpy(&be->dpcm[stream].hw_params, &hw_params, sizeof(struct snd_pcm_hw_params)); /* only allow hw_params() if no connected FEs are running */ if (!snd_soc_dpcm_can_be_params(fe, be, stream)) continue; if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) && (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE)) continue; dev_dbg(be->dev, "ASoC: hw_params BE %s\n", be->dai_link->name); ret = __soc_pcm_hw_params(be, be_substream, &hw_params); if (ret < 0) goto unwind; be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS; } return 0; unwind: dev_dbg(fe->dev, "ASoC: %s() failed at %s (%d)\n", __func__, be->dai_link->name, ret); /* disable any enabled and non active backends */ for_each_dpcm_be_rollback(fe, stream, dpcm) { be = dpcm->be; be_substream = snd_soc_dpcm_get_substream(be, stream); if (!snd_soc_dpcm_be_can_update(fe, be, stream)) continue; /* only allow hw_free() if no connected FEs are running */ if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) continue; if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) && (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) && (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)) continue; __soc_pcm_hw_free(be, be_substream); } return ret; } static int dpcm_fe_dai_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params) { struct snd_soc_pcm_runtime *fe = snd_soc_substream_to_rtd(substream); int ret, stream = substream->stream; snd_soc_dpcm_mutex_lock(fe); dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE); memcpy(&fe->dpcm[stream].hw_params, params, sizeof(struct snd_pcm_hw_params)); ret = dpcm_be_dai_hw_params(fe, stream); if (ret < 0) goto out; dev_dbg(fe->dev, "ASoC: hw_params FE %s rate %d chan %x fmt %d\n", fe->dai_link->name, params_rate(params), params_channels(params), params_format(params)); /* call hw_params on the frontend */ ret = __soc_pcm_hw_params(fe, substream, params); if (ret < 0) dpcm_be_dai_hw_free(fe, stream); else fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS; out: dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO); snd_soc_dpcm_mutex_unlock(fe); return soc_pcm_ret(fe, ret); } int dpcm_be_dai_trigger(struct snd_soc_pcm_runtime *fe, int stream, int cmd) { struct snd_soc_pcm_runtime *be; bool pause_stop_transition; struct snd_soc_dpcm *dpcm; unsigned long flags; int ret = 0; for_each_dpcm_be(fe, stream, dpcm) { struct snd_pcm_substream *be_substream; be = dpcm->be; be_substream = snd_soc_dpcm_get_substream(be, stream); snd_soc_dpcm_stream_lock_irqsave_nested(be, stream, flags); /* is this op for this BE ? */ if (!snd_soc_dpcm_be_can_update(fe, be, stream)) goto next; dev_dbg(be->dev, "ASoC: trigger BE %s cmd %d\n", be->dai_link->name, cmd); switch (cmd) { case SNDRV_PCM_TRIGGER_START: if (!be->dpcm[stream].be_start && (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) && (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP) && (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED)) goto next; be->dpcm[stream].be_start++; if (be->dpcm[stream].be_start != 1) goto next; if (be->dpcm[stream].state == SND_SOC_DPCM_STATE_PAUSED) ret = soc_pcm_trigger(be_substream, SNDRV_PCM_TRIGGER_PAUSE_RELEASE); else ret = soc_pcm_trigger(be_substream, SNDRV_PCM_TRIGGER_START); if (ret) { be->dpcm[stream].be_start--; goto next; } be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; break; case SNDRV_PCM_TRIGGER_RESUME: if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND)) goto next; be->dpcm[stream].be_start++; if (be->dpcm[stream].be_start != 1) goto next; ret = soc_pcm_trigger(be_substream, cmd); if (ret) { be->dpcm[stream].be_start--; goto next; } be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; break; case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: if (!be->dpcm[stream].be_start && (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) && (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED)) goto next; fe->dpcm[stream].fe_pause = false; be->dpcm[stream].be_pause--; be->dpcm[stream].be_start++; if (be->dpcm[stream].be_start != 1) goto next; ret = soc_pcm_trigger(be_substream, cmd); if (ret) { be->dpcm[stream].be_start--; goto next; } be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; break; case SNDRV_PCM_TRIGGER_STOP: if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) && (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED)) goto next; if (be->dpcm[stream].state == SND_SOC_DPCM_STATE_START) be->dpcm[stream].be_start--; if (be->dpcm[stream].be_start != 0) goto next; pause_stop_transition = false; if (fe->dpcm[stream].fe_pause) { pause_stop_transition = true; fe->dpcm[stream].fe_pause = false; be->dpcm[stream].be_pause--; } if (be->dpcm[stream].be_pause != 0) ret = soc_pcm_trigger(be_substream, SNDRV_PCM_TRIGGER_PAUSE_PUSH); else ret = soc_pcm_trigger(be_substream, SNDRV_PCM_TRIGGER_STOP); if (ret) { if (be->dpcm[stream].state == SND_SOC_DPCM_STATE_START) be->dpcm[stream].be_start++; if (pause_stop_transition) { fe->dpcm[stream].fe_pause = true; be->dpcm[stream].be_pause++; } goto next; } if (be->dpcm[stream].be_pause != 0) be->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED; else be->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP; break; case SNDRV_PCM_TRIGGER_SUSPEND: if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) goto next; be->dpcm[stream].be_start--; if (be->dpcm[stream].be_start != 0) goto next; ret = soc_pcm_trigger(be_substream, cmd); if (ret) { be->dpcm[stream].be_start++; goto next; } be->dpcm[stream].state = SND_SOC_DPCM_STATE_SUSPEND; break; case SNDRV_PCM_TRIGGER_PAUSE_PUSH: if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) goto next; fe->dpcm[stream].fe_pause = true; be->dpcm[stream].be_pause++; be->dpcm[stream].be_start--; if (be->dpcm[stream].be_start != 0) goto next; ret = soc_pcm_trigger(be_substream, cmd); if (ret) { be->dpcm[stream].be_start++; goto next; } be->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED; break; } next: snd_soc_dpcm_stream_unlock_irqrestore(be, stream, flags); if (ret) break; } return soc_pcm_ret(fe, ret); } EXPORT_SYMBOL_GPL(dpcm_be_dai_trigger); static int dpcm_dai_trigger_fe_be(struct snd_pcm_substream *substream, int cmd, bool fe_first) { struct snd_soc_pcm_runtime *fe = snd_soc_substream_to_rtd(substream); int ret; /* call trigger on the frontend before the backend. */ if (fe_first) { dev_dbg(fe->dev, "ASoC: pre trigger FE %s cmd %d\n", fe->dai_link->name, cmd); ret = soc_pcm_trigger(substream, cmd); if (ret < 0) return ret; ret = dpcm_be_dai_trigger(fe, substream->stream, cmd); return ret; } /* call trigger on the frontend after the backend. */ ret = dpcm_be_dai_trigger(fe, substream->stream, cmd); if (ret < 0) return ret; dev_dbg(fe->dev, "ASoC: post trigger FE %s cmd %d\n", fe->dai_link->name, cmd); ret = soc_pcm_trigger(substream, cmd); return ret; } static int dpcm_fe_dai_do_trigger(struct snd_pcm_substream *substream, int cmd) { struct snd_soc_pcm_runtime *fe = snd_soc_substream_to_rtd(substream); int stream = substream->stream; int ret = 0; enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream]; fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; switch (trigger) { case SND_SOC_DPCM_TRIGGER_PRE: switch (cmd) { case SNDRV_PCM_TRIGGER_START: case SNDRV_PCM_TRIGGER_RESUME: case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: case SNDRV_PCM_TRIGGER_DRAIN: ret = dpcm_dai_trigger_fe_be(substream, cmd, true); break; case SNDRV_PCM_TRIGGER_STOP: case SNDRV_PCM_TRIGGER_SUSPEND: case SNDRV_PCM_TRIGGER_PAUSE_PUSH: ret = dpcm_dai_trigger_fe_be(substream, cmd, false); break; default: ret = -EINVAL; break; } break; case SND_SOC_DPCM_TRIGGER_POST: switch (cmd) { case SNDRV_PCM_TRIGGER_START: case SNDRV_PCM_TRIGGER_RESUME: case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: case SNDRV_PCM_TRIGGER_DRAIN: ret = dpcm_dai_trigger_fe_be(substream, cmd, false); break; case SNDRV_PCM_TRIGGER_STOP: case SNDRV_PCM_TRIGGER_SUSPEND: case SNDRV_PCM_TRIGGER_PAUSE_PUSH: ret = dpcm_dai_trigger_fe_be(substream, cmd, true); break; default: ret = -EINVAL; break; } break; case SND_SOC_DPCM_TRIGGER_BESPOKE: /* bespoke trigger() - handles both FE and BEs */ dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd %d\n", fe->dai_link->name, cmd); ret = snd_soc_pcm_dai_bespoke_trigger(substream, cmd); break; default: dev_err(fe->dev, "ASoC: invalid trigger cmd %d for %s\n", cmd, fe->dai_link->name); ret = -EINVAL; goto out; } if (ret < 0) { dev_err(fe->dev, "ASoC: trigger FE cmd: %d failed: %d\n", cmd, ret); goto out; } switch (cmd) { case SNDRV_PCM_TRIGGER_START: case SNDRV_PCM_TRIGGER_RESUME: case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: fe->dpcm[stream].state = SND_SOC_DPCM_STATE_START; break; case SNDRV_PCM_TRIGGER_STOP: case SNDRV_PCM_TRIGGER_SUSPEND: fe->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP; break; case SNDRV_PCM_TRIGGER_PAUSE_PUSH: fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED; break; } out: fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; return ret; } static int dpcm_fe_dai_trigger(struct snd_pcm_substream *substream, int cmd) { struct snd_soc_pcm_runtime *fe = snd_soc_substream_to_rtd(substream); int stream = substream->stream; /* if FE's runtime_update is already set, we're in race; * process this trigger later at exit */ if (fe->dpcm[stream].runtime_update != SND_SOC_DPCM_UPDATE_NO) { fe->dpcm[stream].trigger_pending = cmd + 1; return 0; /* delayed, assuming it's successful */ } /* we're alone, let's trigger */ return dpcm_fe_dai_do_trigger(substream, cmd); } int dpcm_be_dai_prepare(struct snd_soc_pcm_runtime *fe, int stream) { struct snd_soc_dpcm *dpcm; int ret = 0; for_each_dpcm_be(fe, stream, dpcm) { struct snd_soc_pcm_runtime *be = dpcm->be; struct snd_pcm_substream *be_substream = snd_soc_dpcm_get_substream(be, stream); /* is this op for this BE ? */ if (!snd_soc_dpcm_be_can_update(fe, be, stream)) continue; if (!snd_soc_dpcm_can_be_prepared(fe, be, stream)) continue; if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP) && (be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND) && (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED)) continue; dev_dbg(be->dev, "ASoC: prepare BE %s\n", be->dai_link->name); ret = __soc_pcm_prepare(be, be_substream); if (ret < 0) break; be->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE; } return soc_pcm_ret(fe, ret); } static int dpcm_fe_dai_prepare(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *fe = snd_soc_substream_to_rtd(substream); int stream = substream->stream, ret = 0; snd_soc_dpcm_mutex_lock(fe); dev_dbg(fe->dev, "ASoC: prepare FE %s\n", fe->dai_link->name); dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE); /* there is no point preparing this FE if there are no BEs */ if (list_empty(&fe->dpcm[stream].be_clients)) { /* dev_err_once() for visibility, dev_dbg() for debugging UCM profiles */ dev_err_once(fe->dev, "ASoC: no backend DAIs enabled for %s, possibly missing ALSA mixer-based routing or UCM profile\n", fe->dai_link->name); dev_dbg(fe->dev, "ASoC: no backend DAIs enabled for %s\n", fe->dai_link->name); ret = -EINVAL; goto out; } ret = dpcm_be_dai_prepare(fe, stream); if (ret < 0) goto out; /* call prepare on the frontend */ ret = __soc_pcm_prepare(fe, substream); if (ret < 0) goto out; fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE; out: dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO); snd_soc_dpcm_mutex_unlock(fe); return soc_pcm_ret(fe, ret); } static int dpcm_run_update_shutdown(struct snd_soc_pcm_runtime *fe, int stream) { struct snd_pcm_substream *substream = snd_soc_dpcm_get_substream(fe, stream); enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream]; int err; dev_dbg(fe->dev, "ASoC: runtime %s close on FE %s\n", stream ? "capture" : "playback", fe->dai_link->name); if (trigger == SND_SOC_DPCM_TRIGGER_BESPOKE) { /* call bespoke trigger - FE takes care of all BE triggers */ dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd stop\n", fe->dai_link->name); err = snd_soc_pcm_dai_bespoke_trigger(substream, SNDRV_PCM_TRIGGER_STOP); } else { dev_dbg(fe->dev, "ASoC: trigger FE %s cmd stop\n", fe->dai_link->name); err = dpcm_be_dai_trigger(fe, stream, SNDRV_PCM_TRIGGER_STOP); } dpcm_be_dai_hw_free(fe, stream); dpcm_be_dai_shutdown(fe, stream); /* run the stream event for each BE */ dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_NOP); return soc_pcm_ret(fe, err); } static int dpcm_run_update_startup(struct snd_soc_pcm_runtime *fe, int stream) { struct snd_pcm_substream *substream = snd_soc_dpcm_get_substream(fe, stream); struct snd_soc_dpcm *dpcm; enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream]; int ret = 0; dev_dbg(fe->dev, "ASoC: runtime %s open on FE %s\n", stream ? "capture" : "playback", fe->dai_link->name); /* Only start the BE if the FE is ready */ if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_HW_FREE || fe->dpcm[stream].state == SND_SOC_DPCM_STATE_CLOSE) { dev_err(fe->dev, "ASoC: FE %s is not ready %d\n", fe->dai_link->name, fe->dpcm[stream].state); ret = -EINVAL; goto disconnect; } /* startup must always be called for new BEs */ ret = dpcm_be_dai_startup(fe, stream); if (ret < 0) goto disconnect; /* keep going if FE state is > open */ if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_OPEN) return 0; ret = dpcm_be_dai_hw_params(fe, stream); if (ret < 0) goto close; /* keep going if FE state is > hw_params */ if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_HW_PARAMS) return 0; ret = dpcm_be_dai_prepare(fe, stream); if (ret < 0) goto hw_free; /* run the stream event for each BE */ dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_NOP); /* keep going if FE state is > prepare */ if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_PREPARE || fe->dpcm[stream].state == SND_SOC_DPCM_STATE_STOP) return 0; if (trigger == SND_SOC_DPCM_TRIGGER_BESPOKE) { /* call trigger on the frontend - FE takes care of all BE triggers */ dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd start\n", fe->dai_link->name); ret = snd_soc_pcm_dai_bespoke_trigger(substream, SNDRV_PCM_TRIGGER_START); if (ret < 0) goto hw_free; } else { dev_dbg(fe->dev, "ASoC: trigger FE %s cmd start\n", fe->dai_link->name); ret = dpcm_be_dai_trigger(fe, stream, SNDRV_PCM_TRIGGER_START); if (ret < 0) goto hw_free; } return 0; hw_free: dpcm_be_dai_hw_free(fe, stream); close: dpcm_be_dai_shutdown(fe, stream); disconnect: /* disconnect any pending BEs */ for_each_dpcm_be(fe, stream, dpcm) { struct snd_soc_pcm_runtime *be = dpcm->be; /* is this op for this BE ? */ if (!snd_soc_dpcm_be_can_update(fe, be, stream)) continue; if (be->dpcm[stream].state == SND_SOC_DPCM_STATE_CLOSE || be->dpcm[stream].state == SND_SOC_DPCM_STATE_NEW) dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; } return soc_pcm_ret(fe, ret); } static int soc_dpcm_fe_runtime_update(struct snd_soc_pcm_runtime *fe, int new) { struct snd_soc_dapm_widget_list *list; int stream; int count, paths; if (!fe->dai_link->dynamic) return 0; if (fe->dai_link->num_cpus > 1) { dev_err(fe->dev, "%s doesn't support Multi CPU yet\n", __func__); return -EINVAL; } /* only check active links */ if (!snd_soc_dai_active(snd_soc_rtd_to_cpu(fe, 0))) return 0; /* DAPM sync will call this to update DSP paths */ dev_dbg(fe->dev, "ASoC: DPCM %s runtime update for FE %s\n", new ? "new" : "old", fe->dai_link->name); for_each_pcm_streams(stream) { /* skip if FE doesn't have playback/capture capability */ if (!snd_soc_dai_stream_valid(snd_soc_rtd_to_cpu(fe, 0), stream) || !snd_soc_dai_stream_valid(snd_soc_rtd_to_codec(fe, 0), stream)) continue; /* skip if FE isn't currently playing/capturing */ if (!snd_soc_dai_stream_active(snd_soc_rtd_to_cpu(fe, 0), stream) || !snd_soc_dai_stream_active(snd_soc_rtd_to_codec(fe, 0), stream)) continue; paths = dpcm_path_get(fe, stream, &list); if (paths < 0) return paths; /* update any playback/capture paths */ count = dpcm_process_paths(fe, stream, &list, new); if (count) { dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_BE); if (new) dpcm_run_update_startup(fe, stream); else dpcm_run_update_shutdown(fe, stream); dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO); dpcm_clear_pending_state(fe, stream); dpcm_be_disconnect(fe, stream); } dpcm_path_put(&list); } return 0; } /* Called by DAPM mixer/mux changes to update audio routing between PCMs and * any DAI links. */ int snd_soc_dpcm_runtime_update(struct snd_soc_card *card) { struct snd_soc_pcm_runtime *fe; int ret = 0; snd_soc_dpcm_mutex_lock(card); /* shutdown all old paths first */ for_each_card_rtds(card, fe) { ret = soc_dpcm_fe_runtime_update(fe, 0); if (ret) goto out; } /* bring new paths up */ for_each_card_rtds(card, fe) { ret = soc_dpcm_fe_runtime_update(fe, 1); if (ret) goto out; } out: snd_soc_dpcm_mutex_unlock(card); return ret; } EXPORT_SYMBOL_GPL(snd_soc_dpcm_runtime_update); static void dpcm_fe_dai_cleanup(struct snd_pcm_substream *fe_substream) { struct snd_soc_pcm_runtime *fe = snd_soc_substream_to_rtd(fe_substream); struct snd_soc_dpcm *dpcm; int stream = fe_substream->stream; snd_soc_dpcm_mutex_assert_held(fe); /* mark FE's links ready to prune */ for_each_dpcm_be(fe, stream, dpcm) dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; dpcm_be_disconnect(fe, stream); } static int dpcm_fe_dai_close(struct snd_pcm_substream *fe_substream) { struct snd_soc_pcm_runtime *fe = snd_soc_substream_to_rtd(fe_substream); int ret; snd_soc_dpcm_mutex_lock(fe); ret = dpcm_fe_dai_shutdown(fe_substream); dpcm_fe_dai_cleanup(fe_substream); snd_soc_dpcm_mutex_unlock(fe); return ret; } static int dpcm_fe_dai_open(struct snd_pcm_substream *fe_substream) { struct snd_soc_pcm_runtime *fe = snd_soc_substream_to_rtd(fe_substream); struct snd_soc_dapm_widget_list *list; int ret; int stream = fe_substream->stream; snd_soc_dpcm_mutex_lock(fe); ret = dpcm_path_get(fe, stream, &list); if (ret < 0) goto open_end; /* calculate valid and active FE <-> BE dpcms */ dpcm_process_paths(fe, stream, &list, 1); ret = dpcm_fe_dai_startup(fe_substream); if (ret < 0) dpcm_fe_dai_cleanup(fe_substream); dpcm_clear_pending_state(fe, stream); dpcm_path_put(&list); open_end: snd_soc_dpcm_mutex_unlock(fe); return ret; } static int soc_get_playback_capture(struct snd_soc_pcm_runtime *rtd, int *playback, int *capture) { struct snd_soc_dai_link *dai_link = rtd->dai_link; struct snd_soc_dai *cpu_dai; int has_playback = 0; int has_capture = 0; int i; if (dai_link->dynamic && dai_link->num_cpus > 1) { dev_err(rtd->dev, "DPCM doesn't support Multi CPU for Front-Ends yet\n"); return -EINVAL; } if (dai_link->dynamic || dai_link->no_pcm) { int stream; if (dai_link->dpcm_playback) { stream = SNDRV_PCM_STREAM_PLAYBACK; for_each_rtd_cpu_dais(rtd, i, cpu_dai) { if (snd_soc_dai_stream_valid(cpu_dai, stream)) { has_playback = 1; break; } } if (!has_playback) { dev_err(rtd->card->dev, "No CPU DAIs support playback for stream %s\n", dai_link->stream_name); return -EINVAL; } } if (dai_link->dpcm_capture) { stream = SNDRV_PCM_STREAM_CAPTURE; for_each_rtd_cpu_dais(rtd, i, cpu_dai) { if (snd_soc_dai_stream_valid(cpu_dai, stream)) { has_capture = 1; break; } } if (!has_capture) { dev_err(rtd->card->dev, "No CPU DAIs support capture for stream %s\n", dai_link->stream_name); return -EINVAL; } } } else { struct snd_soc_dai *codec_dai; /* Adapt stream for codec2codec links */ int cpu_capture = snd_soc_get_stream_cpu(dai_link, SNDRV_PCM_STREAM_CAPTURE); int cpu_playback = snd_soc_get_stream_cpu(dai_link, SNDRV_PCM_STREAM_PLAYBACK); for_each_rtd_codec_dais(rtd, i, codec_dai) { if (dai_link->num_cpus == 1) { cpu_dai = snd_soc_rtd_to_cpu(rtd, 0); } else if (dai_link->num_cpus == dai_link->num_codecs) { cpu_dai = snd_soc_rtd_to_cpu(rtd, i); } else if (rtd->dai_link->num_codecs > rtd->dai_link->num_cpus) { int cpu_id; if (!rtd->dai_link->codec_ch_maps) { dev_err(rtd->card->dev, "%s: no codec channel mapping table provided\n", __func__); return -EINVAL; } cpu_id = rtd->dai_link->codec_ch_maps[i].connected_cpu_id; cpu_dai = snd_soc_rtd_to_cpu(rtd, cpu_id); } else { dev_err(rtd->card->dev, "%s codec number %d < cpu number %d is not supported\n", __func__, rtd->dai_link->num_codecs, rtd->dai_link->num_cpus); return -EINVAL; } if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_PLAYBACK) && snd_soc_dai_stream_valid(cpu_dai, cpu_playback)) has_playback = 1; if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_CAPTURE) && snd_soc_dai_stream_valid(cpu_dai, cpu_capture)) has_capture = 1; } } if (dai_link->playback_only) has_capture = 0; if (dai_link->capture_only) has_playback = 0; if (!has_playback && !has_capture) { dev_err(rtd->dev, "substream %s has no playback, no capture\n", dai_link->stream_name); return -EINVAL; } *playback = has_playback; *capture = has_capture; return 0; } static int soc_create_pcm(struct snd_pcm **pcm, struct snd_soc_pcm_runtime *rtd, int playback, int capture, int num) { char new_name[64]; int ret; /* create the PCM */ if (rtd->dai_link->c2c_params) { snprintf(new_name, sizeof(new_name), "codec2codec(%s)", rtd->dai_link->stream_name); ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num, playback, capture, pcm); } else if (rtd->dai_link->no_pcm) { snprintf(new_name, sizeof(new_name), "(%s)", rtd->dai_link->stream_name); ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num, playback, capture, pcm); } else { if (rtd->dai_link->dynamic) snprintf(new_name, sizeof(new_name), "%s (*)", rtd->dai_link->stream_name); else snprintf(new_name, sizeof(new_name), "%s %s-%d", rtd->dai_link->stream_name, soc_codec_dai_name(rtd), num); ret = snd_pcm_new(rtd->card->snd_card, new_name, num, playback, capture, pcm); } if (ret < 0) { dev_err(rtd->card->dev, "ASoC: can't create pcm %s for dailink %s: %d\n", new_name, rtd->dai_link->name, ret); return ret; } dev_dbg(rtd->card->dev, "ASoC: registered pcm #%d %s\n",num, new_name); return 0; } /* create a new pcm */ int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num) { struct snd_soc_component *component; struct snd_pcm *pcm; int ret = 0, playback = 0, capture = 0; int i; ret = soc_get_playback_capture(rtd, &playback, &capture); if (ret < 0) return ret; ret = soc_create_pcm(&pcm, rtd, playback, capture, num); if (ret < 0) return ret; /* DAPM dai link stream work */ /* * Currently nothing to do for c2c links * Since c2c links are internal nodes in the DAPM graph and * don't interface with the outside world or application layer * we don't have to do any special handling on close. */ if (!rtd->dai_link->c2c_params) rtd->close_delayed_work_func = snd_soc_close_delayed_work; rtd->pcm = pcm; pcm->nonatomic = rtd->dai_link->nonatomic; pcm->private_data = rtd; pcm->no_device_suspend = true; if (rtd->dai_link->no_pcm || rtd->dai_link->c2c_params) { if (playback) pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->private_data = rtd; if (capture) pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream->private_data = rtd; goto out; } /* ASoC PCM operations */ if (rtd->dai_link->dynamic) { rtd->ops.open = dpcm_fe_dai_open; rtd->ops.hw_params = dpcm_fe_dai_hw_params; rtd->ops.prepare = dpcm_fe_dai_prepare; rtd->ops.trigger = dpcm_fe_dai_trigger; rtd->ops.hw_free = dpcm_fe_dai_hw_free; rtd->ops.close = dpcm_fe_dai_close; rtd->ops.pointer = soc_pcm_pointer; } else { rtd->ops.open = soc_pcm_open; rtd->ops.hw_params = soc_pcm_hw_params; rtd->ops.prepare = soc_pcm_prepare; rtd->ops.trigger = soc_pcm_trigger; rtd->ops.hw_free = soc_pcm_hw_free; rtd->ops.close = soc_pcm_close; rtd->ops.pointer = soc_pcm_pointer; } for_each_rtd_components(rtd, i, component) { const struct snd_soc_component_driver *drv = component->driver; if (drv->ioctl) rtd->ops.ioctl = snd_soc_pcm_component_ioctl; if (drv->sync_stop) rtd->ops.sync_stop = snd_soc_pcm_component_sync_stop; if (drv->copy) rtd->ops.copy = snd_soc_pcm_component_copy; if (drv->page) rtd->ops.page = snd_soc_pcm_component_page; if (drv->mmap) rtd->ops.mmap = snd_soc_pcm_component_mmap; if (drv->ack) rtd->ops.ack = snd_soc_pcm_component_ack; } if (playback) snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &rtd->ops); if (capture) snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &rtd->ops); ret = snd_soc_pcm_component_new(rtd); if (ret < 0) return ret; out: dev_dbg(rtd->card->dev, "%s <-> %s mapping ok\n", soc_codec_dai_name(rtd), soc_cpu_dai_name(rtd)); return ret; } /* is the current PCM operation for this FE ? */ int snd_soc_dpcm_fe_can_update(struct snd_soc_pcm_runtime *fe, int stream) { if (fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_FE) return 1; return 0; } EXPORT_SYMBOL_GPL(snd_soc_dpcm_fe_can_update); /* is the current PCM operation for this BE ? */ int snd_soc_dpcm_be_can_update(struct snd_soc_pcm_runtime *fe, struct snd_soc_pcm_runtime *be, int stream) { if ((fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_FE) || ((fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_BE) && be->dpcm[stream].runtime_update)) return 1; return 0; } EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_can_update); /* get the substream for this BE */ struct snd_pcm_substream * snd_soc_dpcm_get_substream(struct snd_soc_pcm_runtime *be, int stream) { return be->pcm->streams[stream].substream; } EXPORT_SYMBOL_GPL(snd_soc_dpcm_get_substream); static int snd_soc_dpcm_check_state(struct snd_soc_pcm_runtime *fe, struct snd_soc_pcm_runtime *be, int stream, const enum snd_soc_dpcm_state *states, int num_states) { struct snd_soc_dpcm *dpcm; int state; int ret = 1; int i; for_each_dpcm_fe(be, stream, dpcm) { if (dpcm->fe == fe) continue; state = dpcm->fe->dpcm[stream].state; for (i = 0; i < num_states; i++) { if (state == states[i]) { ret = 0; break; } } } /* it's safe to do this BE DAI */ return ret; } /* * We can only hw_free, stop, pause or suspend a BE DAI if any of it's FE * are not running, paused or suspended for the specified stream direction. */ int snd_soc_dpcm_can_be_free_stop(struct snd_soc_pcm_runtime *fe, struct snd_soc_pcm_runtime *be, int stream) { const enum snd_soc_dpcm_state state[] = { SND_SOC_DPCM_STATE_START, SND_SOC_DPCM_STATE_PAUSED, SND_SOC_DPCM_STATE_SUSPEND, }; return snd_soc_dpcm_check_state(fe, be, stream, state, ARRAY_SIZE(state)); } EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_free_stop); /* * We can only change hw params a BE DAI if any of it's FE are not prepared, * running, paused or suspended for the specified stream direction. */ int snd_soc_dpcm_can_be_params(struct snd_soc_pcm_runtime *fe, struct snd_soc_pcm_runtime *be, int stream) { const enum snd_soc_dpcm_state state[] = { SND_SOC_DPCM_STATE_START, SND_SOC_DPCM_STATE_PAUSED, SND_SOC_DPCM_STATE_SUSPEND, SND_SOC_DPCM_STATE_PREPARE, }; return snd_soc_dpcm_check_state(fe, be, stream, state, ARRAY_SIZE(state)); } EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_params); /* * We can only prepare a BE DAI if any of it's FE are not prepared, * running or paused for the specified stream direction. */ int snd_soc_dpcm_can_be_prepared(struct snd_soc_pcm_runtime *fe, struct snd_soc_pcm_runtime *be, int stream) { const enum snd_soc_dpcm_state state[] = { SND_SOC_DPCM_STATE_START, SND_SOC_DPCM_STATE_PAUSED, SND_SOC_DPCM_STATE_PREPARE, }; return snd_soc_dpcm_check_state(fe, be, stream, state, ARRAY_SIZE(state)); } EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_prepared);
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