| // 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/pm_runtime.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 DPCM_MAX_BE_USERS 8 |
| |
| #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; |
| unsigned long flags; |
| |
| /* 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; |
| } |
| |
| spin_lock_irqsave(&fe->card->dpcm_lock, flags); |
| for_each_dpcm_be(fe, stream, dpcm) { |
| struct snd_soc_pcm_runtime *be = dpcm->be; |
| params = &dpcm->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)); |
| } |
| spin_unlock_irqrestore(&fe->card->dpcm_lock, flags); |
| 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->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; |
| |
| for_each_pcm_streams(stream) |
| if (snd_soc_dai_stream_valid(asoc_rtd_to_cpu(fe, 0), stream)) |
| offset += dpcm_show_state(fe, stream, |
| buf + offset, |
| out_count - offset); |
| |
| 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) |
| return; |
| |
| 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 |
| |
| /** |
| * 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 |
| * |
| * 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; |
| |
| lockdep_assert_held(&rtd->card->pcm_mutex); |
| |
| 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) |
| { |
| struct snd_pcm_runtime *runtime = substream->runtime; |
| runtime->hw.info = hw->info; |
| runtime->hw.formats = hw->formats; |
| runtime->hw.period_bytes_min = hw->period_bytes_min; |
| runtime->hw.period_bytes_max = hw->period_bytes_max; |
| runtime->hw.periods_min = hw->periods_min; |
| runtime->hw.periods_max = hw->periods_max; |
| runtime->hw.buffer_bytes_max = hw->buffer_bytes_max; |
| runtime->hw.fifo_size = hw->fifo_size; |
| 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; |
| |
| 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 int soc_pcm_apply_symmetry(struct snd_pcm_substream *substream, |
| struct snd_soc_dai *soc_dai) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| int ret; |
| |
| if (soc_dai->rate && (soc_dai->driver->symmetric_rates || |
| rtd->dai_link->symmetric_rates)) { |
| dev_dbg(soc_dai->dev, "ASoC: Symmetry forces %dHz rate\n", |
| soc_dai->rate); |
| |
| ret = snd_pcm_hw_constraint_single(substream->runtime, |
| SNDRV_PCM_HW_PARAM_RATE, |
| soc_dai->rate); |
| if (ret < 0) { |
| dev_err(soc_dai->dev, |
| "ASoC: Unable to apply rate constraint: %d\n", |
| ret); |
| return ret; |
| } |
| } |
| |
| if (soc_dai->channels && (soc_dai->driver->symmetric_channels || |
| rtd->dai_link->symmetric_channels)) { |
| dev_dbg(soc_dai->dev, "ASoC: Symmetry forces %d channel(s)\n", |
| soc_dai->channels); |
| |
| ret = snd_pcm_hw_constraint_single(substream->runtime, |
| SNDRV_PCM_HW_PARAM_CHANNELS, |
| soc_dai->channels); |
| if (ret < 0) { |
| dev_err(soc_dai->dev, |
| "ASoC: Unable to apply channel symmetry constraint: %d\n", |
| ret); |
| return ret; |
| } |
| } |
| |
| if (soc_dai->sample_bits && (soc_dai->driver->symmetric_samplebits || |
| rtd->dai_link->symmetric_samplebits)) { |
| dev_dbg(soc_dai->dev, "ASoC: Symmetry forces %d sample bits\n", |
| soc_dai->sample_bits); |
| |
| ret = snd_pcm_hw_constraint_single(substream->runtime, |
| SNDRV_PCM_HW_PARAM_SAMPLE_BITS, |
| soc_dai->sample_bits); |
| if (ret < 0) { |
| dev_err(soc_dai->dev, |
| "ASoC: Unable to apply sample bits symmetry constraint: %d\n", |
| ret); |
| return ret; |
| } |
| } |
| |
| 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 = substream->private_data; |
| struct snd_soc_dai *dai; |
| struct snd_soc_dai *cpu_dai; |
| unsigned int rate, channels, sample_bits, symmetry, i; |
| |
| rate = params_rate(params); |
| channels = params_channels(params); |
| sample_bits = snd_pcm_format_physical_width(params_format(params)); |
| |
| /* reject unmatched parameters when applying symmetry */ |
| symmetry = rtd->dai_link->symmetric_rates; |
| |
| for_each_rtd_cpu_dais(rtd, i, dai) |
| symmetry |= dai->driver->symmetric_rates; |
| |
| if (symmetry) { |
| for_each_rtd_cpu_dais(rtd, i, cpu_dai) { |
| if (cpu_dai->rate && cpu_dai->rate != rate) { |
| dev_err(rtd->dev, "ASoC: unmatched rate symmetry: %d - %d\n", |
| cpu_dai->rate, rate); |
| return -EINVAL; |
| } |
| } |
| } |
| |
| symmetry = rtd->dai_link->symmetric_channels; |
| |
| for_each_rtd_dais(rtd, i, dai) |
| symmetry |= dai->driver->symmetric_channels; |
| |
| if (symmetry) { |
| for_each_rtd_cpu_dais(rtd, i, cpu_dai) { |
| if (cpu_dai->channels && |
| cpu_dai->channels != channels) { |
| dev_err(rtd->dev, "ASoC: unmatched channel symmetry: %d - %d\n", |
| cpu_dai->channels, channels); |
| return -EINVAL; |
| } |
| } |
| } |
| |
| symmetry = rtd->dai_link->symmetric_samplebits; |
| |
| for_each_rtd_dais(rtd, i, dai) |
| symmetry |= dai->driver->symmetric_samplebits; |
| |
| if (symmetry) { |
| for_each_rtd_cpu_dais(rtd, i, cpu_dai) { |
| if (cpu_dai->sample_bits && |
| cpu_dai->sample_bits != sample_bits) { |
| dev_err(rtd->dev, "ASoC: unmatched sample bits symmetry: %d - %d\n", |
| cpu_dai->sample_bits, sample_bits); |
| return -EINVAL; |
| } |
| } |
| } |
| |
| return 0; |
| } |
| |
| static bool soc_pcm_has_symmetry(struct snd_pcm_substream *substream) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_soc_dai_link *link = rtd->dai_link; |
| struct snd_soc_dai *dai; |
| unsigned int symmetry, i; |
| |
| symmetry = link->symmetric_rates || |
| link->symmetric_channels || |
| link->symmetric_samplebits; |
| |
| for_each_rtd_dais(rtd, i, dai) |
| symmetry = symmetry || |
| dai->driver->symmetric_rates || |
| dai->driver->symmetric_channels || |
| dai->driver->symmetric_samplebits; |
| |
| return symmetry; |
| } |
| |
| static void soc_pcm_set_msb(struct snd_pcm_substream *substream, int bits) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 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 = substream->private_data; |
| struct snd_soc_dai *cpu_dai; |
| struct snd_soc_dai *codec_dai; |
| struct snd_soc_pcm_stream *pcm_codec, *pcm_cpu; |
| int stream = substream->stream; |
| int i; |
| unsigned int bits = 0, cpu_bits = 0; |
| |
| for_each_rtd_codec_dais(rtd, i, codec_dai) { |
| 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) { |
| 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); |
| } |
| |
| /** |
| * 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 chan_min = 0, chan_max = UINT_MAX; |
| unsigned int cpu_chan_min = 0, cpu_chan_max = UINT_MAX; |
| unsigned int rate_min = 0, rate_max = UINT_MAX; |
| unsigned int cpu_rate_min = 0, cpu_rate_max = UINT_MAX; |
| unsigned int rates = UINT_MAX, cpu_rates = UINT_MAX; |
| u64 formats = ULLONG_MAX; |
| int i; |
| |
| /* 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); |
| |
| cpu_chan_min = max(cpu_chan_min, cpu_stream->channels_min); |
| cpu_chan_max = min(cpu_chan_max, cpu_stream->channels_max); |
| cpu_rate_min = max(cpu_rate_min, cpu_stream->rate_min); |
| cpu_rate_max = min_not_zero(cpu_rate_max, cpu_stream->rate_max); |
| formats &= cpu_stream->formats; |
| cpu_rates = snd_pcm_rate_mask_intersect(cpu_stream->rates, |
| cpu_rates); |
| } |
| |
| /* 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); |
| |
| chan_min = max(chan_min, codec_stream->channels_min); |
| chan_max = min(chan_max, codec_stream->channels_max); |
| rate_min = max(rate_min, codec_stream->rate_min); |
| rate_max = min_not_zero(rate_max, codec_stream->rate_max); |
| formats &= codec_stream->formats; |
| rates = snd_pcm_rate_mask_intersect(codec_stream->rates, rates); |
| } |
| |
| /* Verify both a valid CPU DAI and a valid CODEC DAI were found */ |
| if (!chan_min || !cpu_chan_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->num_codecs > 1) { |
| chan_min = cpu_chan_min; |
| chan_max = cpu_chan_max; |
| } |
| |
| /* finally find a intersection between CODECs and CPUs */ |
| hw->channels_min = max(chan_min, cpu_chan_min); |
| hw->channels_max = min(chan_max, cpu_chan_max); |
| hw->formats = formats; |
| hw->rates = snd_pcm_rate_mask_intersect(rates, cpu_rates); |
| |
| snd_pcm_hw_limit_rates(hw); |
| |
| hw->rate_min = max(hw->rate_min, cpu_rate_min); |
| hw->rate_min = max(hw->rate_min, rate_min); |
| hw->rate_max = min_not_zero(hw->rate_max, cpu_rate_max); |
| hw->rate_max = min_not_zero(hw->rate_max, rate_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 = substream->private_data; |
| 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 = substream->private_data; |
| struct snd_soc_component *last = NULL; |
| struct snd_soc_component *component; |
| int i, ret = 0; |
| |
| for_each_rtd_components(rtd, i, component) { |
| last = component; |
| |
| ret = snd_soc_component_module_get_when_open(component); |
| if (ret < 0) { |
| dev_err(component->dev, |
| "ASoC: can't get module %s\n", |
| component->name); |
| break; |
| } |
| |
| ret = snd_soc_component_open(component, substream); |
| if (ret < 0) { |
| snd_soc_component_module_put_when_close(component); |
| dev_err(component->dev, |
| "ASoC: can't open component %s: %d\n", |
| component->name, ret); |
| break; |
| } |
| } |
| |
| if (ret < 0) { |
| /* rollback on error */ |
| for_each_rtd_components(rtd, i, component) { |
| if (component == last) |
| break; |
| |
| snd_soc_component_close(component, substream); |
| snd_soc_component_module_put_when_close(component); |
| } |
| } |
| |
| return ret; |
| } |
| |
| static int soc_pcm_components_close(struct snd_pcm_substream *substream) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_soc_component *component; |
| int i, r, ret = 0; |
| |
| for_each_rtd_components(rtd, i, component) { |
| r = snd_soc_component_close(component, substream); |
| if (r < 0) |
| ret = r; /* use last ret */ |
| |
| snd_soc_component_module_put_when_close(component); |
| } |
| |
| return ret; |
| } |
| |
| /* |
| * 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_pcm_substream *substream) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_soc_component *component; |
| struct snd_soc_dai *dai; |
| int i; |
| |
| mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass); |
| |
| snd_soc_runtime_deactivate(rtd, substream->stream); |
| |
| for_each_rtd_dais(rtd, i, dai) |
| snd_soc_dai_shutdown(dai, substream); |
| |
| snd_soc_link_shutdown(substream); |
| |
| soc_pcm_components_close(substream); |
| |
| snd_soc_dapm_stream_stop(rtd, substream->stream); |
| |
| mutex_unlock(&rtd->card->pcm_mutex); |
| |
| for_each_rtd_components(rtd, i, component) { |
| pm_runtime_mark_last_busy(component->dev); |
| pm_runtime_put_autosuspend(component->dev); |
| } |
| |
| 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 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_pcm_substream *substream) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_pcm_runtime *runtime = substream->runtime; |
| struct snd_soc_component *component; |
| struct snd_soc_dai *dai; |
| const char *codec_dai_name = "multicodec"; |
| const char *cpu_dai_name = "multicpu"; |
| int i, ret = 0; |
| |
| for_each_rtd_components(rtd, i, component) |
| pinctrl_pm_select_default_state(component->dev); |
| |
| for_each_rtd_components(rtd, i, component) |
| pm_runtime_get_sync(component->dev); |
| |
| mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass); |
| |
| ret = soc_pcm_components_open(substream); |
| if (ret < 0) |
| goto component_err; |
| |
| ret = snd_soc_link_startup(substream); |
| if (ret < 0) |
| goto rtd_startup_err; |
| |
| /* startup the audio subsystem */ |
| for_each_rtd_dais(rtd, i, dai) { |
| ret = snd_soc_dai_startup(dai, substream); |
| if (ret < 0) { |
| dev_err(dai->dev, |
| "ASoC: can't open DAI %s: %d\n", |
| dai->name, ret); |
| goto config_err; |
| } |
| |
| if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| dai->tx_mask = 0; |
| else |
| dai->rx_mask = 0; |
| } |
| |
| /* 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); |
| |
| if (rtd->num_codecs == 1) |
| codec_dai_name = asoc_rtd_to_codec(rtd, 0)->name; |
| |
| if (rtd->num_cpus == 1) |
| cpu_dai_name = asoc_rtd_to_cpu(rtd, 0)->name; |
| |
| if (soc_pcm_has_symmetry(substream)) |
| runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX; |
| |
| ret = -EINVAL; |
| if (!runtime->hw.rates) { |
| printk(KERN_ERR "ASoC: %s <-> %s No matching rates\n", |
| codec_dai_name, cpu_dai_name); |
| goto config_err; |
| } |
| if (!runtime->hw.formats) { |
| printk(KERN_ERR "ASoC: %s <-> %s No matching formats\n", |
| codec_dai_name, cpu_dai_name); |
| goto config_err; |
| } |
| if (!runtime->hw.channels_min || !runtime->hw.channels_max || |
| runtime->hw.channels_min > runtime->hw.channels_max) { |
| printk(KERN_ERR "ASoC: %s <-> %s No matching channels\n", |
| codec_dai_name, cpu_dai_name); |
| goto config_err; |
| } |
| |
| soc_pcm_apply_msb(substream); |
| |
| /* Symmetry only applies if we've already got an active stream. */ |
| for_each_rtd_dais(rtd, i, dai) { |
| if (snd_soc_dai_active(dai)) { |
| ret = soc_pcm_apply_symmetry(substream, dai); |
| if (ret != 0) |
| goto config_err; |
| } |
| } |
| |
| pr_debug("ASoC: %s <-> %s info:\n", |
| codec_dai_name, cpu_dai_name); |
| pr_debug("ASoC: rate mask 0x%x\n", runtime->hw.rates); |
| pr_debug("ASoC: min ch %d max ch %d\n", runtime->hw.channels_min, |
| runtime->hw.channels_max); |
| pr_debug("ASoC: min rate %d max rate %d\n", runtime->hw.rate_min, |
| runtime->hw.rate_max); |
| |
| dynamic: |
| |
| snd_soc_runtime_activate(rtd, substream->stream); |
| |
| mutex_unlock(&rtd->card->pcm_mutex); |
| return 0; |
| |
| config_err: |
| for_each_rtd_dais(rtd, i, dai) |
| snd_soc_dai_shutdown(dai, substream); |
| |
| snd_soc_link_shutdown(substream); |
| rtd_startup_err: |
| soc_pcm_components_close(substream); |
| component_err: |
| mutex_unlock(&rtd->card->pcm_mutex); |
| |
| for_each_rtd_components(rtd, i, component) { |
| pm_runtime_mark_last_busy(component->dev); |
| pm_runtime_put_autosuspend(component->dev); |
| } |
| |
| for_each_rtd_components(rtd, i, component) |
| if (!snd_soc_component_active(component)) |
| pinctrl_pm_select_sleep_state(component->dev); |
| |
| return ret; |
| } |
| |
| static void codec2codec_close_delayed_work(struct snd_soc_pcm_runtime *rtd) |
| { |
| /* |
| * 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. |
| */ |
| } |
| |
| /* |
| * 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_pcm_substream *substream) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_soc_component *component; |
| struct snd_soc_dai *dai; |
| int i, ret = 0; |
| |
| mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass); |
| |
| ret = snd_soc_link_prepare(substream); |
| if (ret < 0) |
| goto out; |
| |
| for_each_rtd_components(rtd, i, component) { |
| ret = snd_soc_component_prepare(component, substream); |
| if (ret < 0) { |
| dev_err(component->dev, |
| "ASoC: platform prepare error: %d\n", ret); |
| goto out; |
| } |
| } |
| |
| ret = snd_soc_pcm_dai_prepare(substream); |
| if (ret < 0) { |
| dev_err(rtd->dev, "ASoC: DAI prepare error: %d\n", ret); |
| 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) |
| snd_soc_dai_digital_mute(dai, 0, substream->stream); |
| |
| out: |
| mutex_unlock(&rtd->card->pcm_mutex); |
| 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_components_hw_free(struct snd_pcm_substream *substream, |
| struct snd_soc_component *last) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_soc_component *component; |
| int i, r, ret = 0; |
| |
| for_each_rtd_components(rtd, i, component) { |
| if (component == last) |
| break; |
| |
| r = snd_soc_component_hw_free(component, substream); |
| if (r < 0) |
| ret = r; /* use last ret */ |
| } |
| |
| 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_pcm_substream *substream, |
| struct snd_pcm_hw_params *params) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_soc_component *component; |
| struct snd_soc_dai *cpu_dai; |
| struct snd_soc_dai *codec_dai; |
| int i, ret = 0; |
| |
| mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass); |
| |
| 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) { |
| struct snd_pcm_hw_params codec_params; |
| |
| /* |
| * 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 */ |
| codec_params = *params; |
| |
| /* fixup params based on TDM slot masks */ |
| if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && |
| codec_dai->tx_mask) |
| soc_pcm_codec_params_fixup(&codec_params, |
| codec_dai->tx_mask); |
| |
| if (substream->stream == SNDRV_PCM_STREAM_CAPTURE && |
| codec_dai->rx_mask) |
| soc_pcm_codec_params_fixup(&codec_params, |
| codec_dai->rx_mask); |
| |
| ret = snd_soc_dai_hw_params(codec_dai, substream, |
| &codec_params); |
| if(ret < 0) |
| goto codec_err; |
| |
| codec_dai->rate = params_rate(&codec_params); |
| codec_dai->channels = params_channels(&codec_params); |
| codec_dai->sample_bits = snd_pcm_format_physical_width( |
| params_format(&codec_params)); |
| |
| snd_soc_dapm_update_dai(substream, &codec_params, codec_dai); |
| } |
| |
| for_each_rtd_cpu_dais(rtd, i, cpu_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(cpu_dai, substream->stream)) |
| continue; |
| |
| ret = snd_soc_dai_hw_params(cpu_dai, substream, params); |
| if (ret < 0) |
| goto interface_err; |
| |
| /* store the parameters for each DAI */ |
| cpu_dai->rate = params_rate(params); |
| cpu_dai->channels = params_channels(params); |
| cpu_dai->sample_bits = |
| snd_pcm_format_physical_width(params_format(params)); |
| |
| snd_soc_dapm_update_dai(substream, params, cpu_dai); |
| } |
| |
| for_each_rtd_components(rtd, i, component) { |
| ret = snd_soc_component_hw_params(component, substream, params); |
| if (ret < 0) { |
| dev_err(component->dev, |
| "ASoC: %s hw params failed: %d\n", |
| component->name, ret); |
| goto component_err; |
| } |
| } |
| component = NULL; |
| |
| out: |
| mutex_unlock(&rtd->card->pcm_mutex); |
| return ret; |
| |
| component_err: |
| soc_pcm_components_hw_free(substream, component); |
| |
| i = rtd->num_cpus; |
| |
| interface_err: |
| for_each_rtd_cpu_dais_rollback(rtd, i, cpu_dai) { |
| if (!snd_soc_dai_stream_valid(cpu_dai, substream->stream)) |
| continue; |
| |
| snd_soc_dai_hw_free(cpu_dai, substream); |
| cpu_dai->rate = 0; |
| } |
| |
| i = rtd->num_codecs; |
| |
| codec_err: |
| for_each_rtd_codec_dais_rollback(rtd, i, codec_dai) { |
| if (!snd_soc_dai_stream_valid(codec_dai, substream->stream)) |
| continue; |
| |
| snd_soc_dai_hw_free(codec_dai, substream); |
| codec_dai->rate = 0; |
| } |
| |
| snd_soc_link_hw_free(substream); |
| |
| mutex_unlock(&rtd->card->pcm_mutex); |
| return ret; |
| } |
| |
| /* |
| * Frees resources allocated by hw_params, can be called multiple times |
| */ |
| static int soc_pcm_hw_free(struct snd_pcm_substream *substream) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_soc_dai *dai; |
| int i; |
| |
| mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass); |
| |
| /* clear the corresponding DAIs parameters when going to be inactive */ |
| for_each_rtd_dais(rtd, i, dai) { |
| int active = snd_soc_dai_stream_active(dai, substream->stream); |
| |
| if (snd_soc_dai_active(dai) == 1) { |
| dai->rate = 0; |
| dai->channels = 0; |
| dai->sample_bits = 0; |
| } |
| |
| if (active == 1) |
| snd_soc_dai_digital_mute(dai, 1, substream->stream); |
| } |
| |
| /* free any machine hw params */ |
| snd_soc_link_hw_free(substream); |
| |
| /* free any component resources */ |
| soc_pcm_components_hw_free(substream, NULL); |
| |
| /* now free hw params for the DAIs */ |
| for_each_rtd_dais(rtd, i, dai) { |
| if (!snd_soc_dai_stream_valid(dai, substream->stream)) |
| continue; |
| |
| snd_soc_dai_hw_free(dai, substream); |
| } |
| |
| mutex_unlock(&rtd->card->pcm_mutex); |
| return 0; |
| } |
| |
| static int soc_pcm_trigger_start(struct snd_pcm_substream *substream, int cmd) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_soc_component *component; |
| int i, ret; |
| |
| ret = snd_soc_link_trigger(substream, cmd); |
| if (ret < 0) |
| return ret; |
| |
| for_each_rtd_components(rtd, i, component) { |
| ret = snd_soc_component_trigger(component, substream, cmd); |
| if (ret < 0) |
| return ret; |
| } |
| |
| return snd_soc_pcm_dai_trigger(substream, cmd); |
| } |
| |
| static int soc_pcm_trigger_stop(struct snd_pcm_substream *substream, int cmd) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_soc_component *component; |
| int i, ret; |
| |
| ret = snd_soc_pcm_dai_trigger(substream, cmd); |
| if (ret < 0) |
| return ret; |
| |
| for_each_rtd_components(rtd, i, component) { |
| ret = snd_soc_component_trigger(component, substream, cmd); |
| if (ret < 0) |
| return ret; |
| } |
| |
| ret = snd_soc_link_trigger(substream, cmd); |
| if (ret < 0) |
| return ret; |
| |
| return 0; |
| } |
| |
| static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd) |
| { |
| int ret; |
| |
| switch (cmd) { |
| case SNDRV_PCM_TRIGGER_START: |
| case SNDRV_PCM_TRIGGER_RESUME: |
| case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
| ret = soc_pcm_trigger_start(substream, cmd); |
| break; |
| case SNDRV_PCM_TRIGGER_STOP: |
| case SNDRV_PCM_TRIGGER_SUSPEND: |
| case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
| ret = soc_pcm_trigger_stop(substream, cmd); |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| 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 accordingly. |
| */ |
| static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_soc_dai *cpu_dai; |
| struct snd_soc_dai *codec_dai; |
| struct snd_pcm_runtime *runtime = substream->runtime; |
| snd_pcm_uframes_t offset = 0; |
| snd_pcm_sframes_t delay = 0; |
| snd_pcm_sframes_t codec_delay = 0; |
| snd_pcm_sframes_t cpu_delay = 0; |
| int i; |
| |
| /* clearing the previous total delay */ |
| runtime->delay = 0; |
| |
| offset = snd_soc_pcm_component_pointer(substream); |
| |
| /* base delay if assigned in pointer callback */ |
| delay = runtime->delay; |
| |
| for_each_rtd_cpu_dais(rtd, i, cpu_dai) { |
| cpu_delay = max(cpu_delay, |
| snd_soc_dai_delay(cpu_dai, substream)); |
| } |
| delay += cpu_delay; |
| |
| for_each_rtd_codec_dais(rtd, i, codec_dai) { |
| codec_delay = max(codec_delay, |
| snd_soc_dai_delay(codec_dai, substream)); |
| } |
| delay += codec_delay; |
| |
| runtime->delay = 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_soc_dpcm *dpcm; |
| unsigned long flags; |
| |
| /* only add new dpcms */ |
| for_each_dpcm_be(fe, stream, dpcm) { |
| if (dpcm->be == be && dpcm->fe == fe) |
| return 0; |
| } |
| |
| dpcm = kzalloc(sizeof(struct snd_soc_dpcm), GFP_KERNEL); |
| if (!dpcm) |
| return -ENOMEM; |
| |
| dpcm->be = be; |
| dpcm->fe = fe; |
| be->dpcm[stream].runtime = fe->dpcm[stream].runtime; |
| dpcm->state = SND_SOC_DPCM_LINK_STATE_NEW; |
| spin_lock_irqsave(&fe->card->dpcm_lock, flags); |
| list_add(&dpcm->list_be, &fe->dpcm[stream].be_clients); |
| list_add(&dpcm->list_fe, &be->dpcm[stream].fe_clients); |
| spin_unlock_irqrestore(&fe->card->dpcm_lock, flags); |
| |
| 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); |
| |
| 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; |
| unsigned long flags; |
| |
| 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); |
| |
| dpcm_remove_debugfs_state(dpcm); |
| |
| spin_lock_irqsave(&fe->card->dpcm_lock, flags); |
| list_del(&dpcm->list_be); |
| list_del(&dpcm->list_fe); |
| spin_unlock_irqrestore(&fe->card->dpcm_lock, flags); |
| 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; |
| |
| 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; |
| } |
| |
| static 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; |
| } |
| |
| static 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; |
| } |
| |
| 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 = asoc_rtd_to_cpu(fe, 0); |
| int paths; |
| |
| if (fe->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, |
| dpcm_end_walk_at_be); |
| |
| dev_dbg(fe->dev, "ASoC: found %d audio %s paths\n", paths, |
| 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_dapm_widget *widget; |
| 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) { |
| 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->be->dpcm[stream].runtime_update = 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; |
| int i, new = 0, err; |
| |
| /* 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_err(fe->dev, "ASoC: no BE found for %s\n", |
| widget->name); |
| continue; |
| } |
| |
| /* don't connect if FE is not running */ |
| if (!fe->dpcm[stream].runtime && !fe->fe_compr) |
| 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 */ |
| be->dpcm[stream].runtime_update = 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; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&fe->card->dpcm_lock, flags); |
| for_each_dpcm_be(fe, stream, dpcm) |
| dpcm->be->dpcm[stream].runtime_update = |
| SND_SOC_DPCM_UPDATE_NO; |
| spin_unlock_irqrestore(&fe->card->dpcm_lock, flags); |
| } |
| |
| static void dpcm_be_dai_startup_unwind(struct snd_soc_pcm_runtime *fe, |
| int stream) |
| { |
| 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 (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); |
| |
| if (--be->dpcm[stream].users != 0) |
| continue; |
| |
| if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) |
| continue; |
| |
| soc_pcm_close(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_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_soc_pcm_runtime *be = dpcm->be; |
| struct snd_pcm_substream *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); |
| |
| 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 = be->dpcm[stream].runtime; |
| err = soc_pcm_open(be_substream); |
| if (err < 0) { |
| dev_err(be->dev, "ASoC: BE open failed %d\n", err); |
| 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].state = SND_SOC_DPCM_STATE_OPEN; |
| count++; |
| } |
| |
| return count; |
| |
| unwind: |
| /* disable any enabled and non active backends */ |
| for_each_dpcm_be_rollback(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 (!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 %d\n", |
| stream ? "capture" : "playback", |
| be->dpcm[stream].state); |
| |
| if (--be->dpcm[stream].users != 0) |
| continue; |
| |
| if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) |
| continue; |
| |
| soc_pcm_close(be_substream); |
| be_substream->runtime = NULL; |
| be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; |
| } |
| |
| return err; |
| } |
| |
| static void dpcm_init_runtime_hw(struct snd_pcm_runtime *runtime, |
| struct snd_soc_pcm_stream *stream) |
| { |
| runtime->hw.rate_min = stream->rate_min; |
| runtime->hw.rate_max = min_not_zero(stream->rate_max, UINT_MAX); |
| runtime->hw.channels_min = stream->channels_min; |
| runtime->hw.channels_max = stream->channels_max; |
| if (runtime->hw.formats) |
| runtime->hw.formats &= stream->formats; |
| else |
| runtime->hw.formats = stream->formats; |
| runtime->hw.rates = stream->rates; |
| } |
| |
| static void dpcm_runtime_merge_format(struct snd_pcm_substream *substream, |
| u64 *formats) |
| { |
| struct snd_soc_pcm_runtime *fe = substream->private_data; |
| 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); |
| |
| *formats &= codec_stream->formats; |
| } |
| } |
| } |
| |
| static void dpcm_runtime_merge_chan(struct snd_pcm_substream *substream, |
| unsigned int *channels_min, |
| unsigned int *channels_max) |
| { |
| struct snd_soc_pcm_runtime *fe = substream->private_data; |
| 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 *codec_stream; |
| 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); |
| |
| *channels_min = max(*channels_min, |
| cpu_stream->channels_min); |
| *channels_max = min(*channels_max, |
| cpu_stream->channels_max); |
| } |
| |
| /* |
| * 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->num_codecs == 1) { |
| codec_stream = snd_soc_dai_get_pcm_stream(asoc_rtd_to_codec(be, 0), stream); |
| |
| *channels_min = max(*channels_min, |
| codec_stream->channels_min); |
| *channels_max = min(*channels_max, |
| codec_stream->channels_max); |
| } |
| } |
| } |
| |
| static void dpcm_runtime_merge_rate(struct snd_pcm_substream *substream, |
| unsigned int *rates, |
| unsigned int *rate_min, |
| unsigned int *rate_max) |
| { |
| struct snd_soc_pcm_runtime *fe = substream->private_data; |
| 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); |
| |
| *rate_min = max(*rate_min, pcm->rate_min); |
| *rate_max = min_not_zero(*rate_max, pcm->rate_max); |
| *rates = snd_pcm_rate_mask_intersect(*rates, pcm->rates); |
| } |
| } |
| } |
| |
| static void dpcm_set_fe_runtime(struct snd_pcm_substream *substream) |
| { |
| struct snd_pcm_runtime *runtime = substream->runtime; |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_soc_dai *cpu_dai; |
| int i; |
| |
| for_each_rtd_cpu_dais(rtd, i, cpu_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(cpu_dai, substream->stream)) |
| continue; |
| |
| dpcm_init_runtime_hw(runtime, |
| snd_soc_dai_get_pcm_stream(cpu_dai, |
| substream->stream)); |
| } |
| |
| dpcm_runtime_merge_format(substream, &runtime->hw.formats); |
| dpcm_runtime_merge_chan(substream, &runtime->hw.channels_min, |
| &runtime->hw.channels_max); |
| dpcm_runtime_merge_rate(substream, &runtime->hw.rates, |
| &runtime->hw.rate_min, &runtime->hw.rate_max); |
| } |
| |
| static int dpcm_fe_dai_do_trigger(struct snd_pcm_substream *substream, int cmd); |
| |
| /* 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 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_pcm_stream_lock_irq(substream); |
| 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_pcm_stream_unlock_irq(substream); |
| } |
| |
| static int dpcm_apply_symmetry(struct snd_pcm_substream *fe_substream, |
| int stream) |
| { |
| struct snd_soc_dpcm *dpcm; |
| struct snd_soc_pcm_runtime *fe = fe_substream->private_data; |
| struct snd_soc_dai *fe_cpu_dai; |
| int err; |
| int i; |
| |
| /* apply symmetry for FE */ |
| if (soc_pcm_has_symmetry(fe_substream)) |
| fe_substream->runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX; |
| |
| for_each_rtd_cpu_dais (fe, i, fe_cpu_dai) { |
| /* Symmetry only applies if we've got an active stream. */ |
| if (snd_soc_dai_active(fe_cpu_dai)) { |
| err = soc_pcm_apply_symmetry(fe_substream, fe_cpu_dai); |
| if (err < 0) |
| return err; |
| } |
| } |
| |
| /* 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; |
| int i; |
| |
| /* A backend may not have the requested substream */ |
| if (!be_substream) |
| continue; |
| |
| rtd = be_substream->private_data; |
| if (rtd->dai_link->be_hw_params_fixup) |
| continue; |
| |
| if (soc_pcm_has_symmetry(be_substream)) |
| be_substream->runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX; |
| |
| /* Symmetry only applies if we've got an active stream. */ |
| for_each_rtd_dais(rtd, i, dai) { |
| if (snd_soc_dai_active(dai)) { |
| err = soc_pcm_apply_symmetry(fe_substream, dai); |
| if (err < 0) |
| return err; |
| } |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int dpcm_fe_dai_startup(struct snd_pcm_substream *fe_substream) |
| { |
| struct snd_soc_pcm_runtime *fe = fe_substream->private_data; |
| struct snd_pcm_runtime *runtime = fe_substream->runtime; |
| 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) { |
| dev_err(fe->dev,"ASoC: failed to start some BEs %d\n", ret); |
| 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_substream); |
| if (ret < 0) { |
| dev_err(fe->dev,"ASoC: failed to start FE %d\n", ret); |
| goto unwind; |
| } |
| |
| fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN; |
| |
| dpcm_set_fe_runtime(fe_substream); |
| snd_pcm_limit_hw_rates(runtime); |
| |
| ret = dpcm_apply_symmetry(fe_substream, stream); |
| if (ret < 0) |
| dev_err(fe->dev, "ASoC: failed to apply dpcm symmetry %d\n", |
| ret); |
| |
| 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 ret; |
| } |
| |
| int dpcm_be_dai_shutdown(struct snd_soc_pcm_runtime *fe, int stream) |
| { |
| struct snd_soc_dpcm *dpcm; |
| |
| /* only shutdown BEs that are either sinks or sources to this FE 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; |
| |
| 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); |
| |
| if (--be->dpcm[stream].users != 0) |
| continue; |
| |
| if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) && |
| (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN)) { |
| soc_pcm_hw_free(be_substream); |
| be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE; |
| } |
| |
| dev_dbg(be->dev, "ASoC: close BE %s\n", |
| be->dai_link->name); |
| |
| soc_pcm_close(be_substream); |
| be_substream->runtime = NULL; |
| |
| be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; |
| } |
| return 0; |
| } |
| |
| static int dpcm_fe_dai_shutdown(struct snd_pcm_substream *substream) |
| { |
| struct snd_soc_pcm_runtime *fe = substream->private_data; |
| int stream = substream->stream; |
| |
| 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(substream); |
| |
| /* run the stream event for each BE */ |
| 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; |
| } |
| |
| int 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_substream); |
| |
| be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE; |
| } |
| |
| return 0; |
| } |
| |
| static int dpcm_fe_dai_hw_free(struct snd_pcm_substream *substream) |
| { |
| struct snd_soc_pcm_runtime *fe = substream->private_data; |
| int err, stream = substream->stream; |
| |
| mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); |
| 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 */ |
| err = soc_pcm_hw_free(substream); |
| if (err < 0) |
| dev_err(fe->dev,"ASoC: hw_free FE %s failed\n", |
| fe->dai_link->name); |
| |
| /* only hw_params backends that are either sinks or sources |
| * to this frontend DAI */ |
| err = 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); |
| |
| mutex_unlock(&fe->card->mutex); |
| return 0; |
| } |
| |
| int dpcm_be_dai_hw_params(struct snd_soc_pcm_runtime *fe, int stream) |
| { |
| struct snd_soc_dpcm *dpcm; |
| int ret; |
| |
| 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; |
| |
| /* copy params for each dpcm */ |
| memcpy(&dpcm->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, &dpcm->hw_params); |
| if (ret < 0) |
| goto unwind; |
| |
| /* copy the fixed-up hw params for BE dai */ |
| memcpy(&be->dpcm[stream].hw_params, &dpcm->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_substream, &dpcm->hw_params); |
| if (ret < 0) { |
| dev_err(dpcm->be->dev, |
| "ASoC: hw_params BE failed %d\n", ret); |
| goto unwind; |
| } |
| |
| be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS; |
| } |
| return 0; |
| |
| unwind: |
| /* disable any enabled and non active backends */ |
| for_each_dpcm_be_rollback(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 (!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_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 = substream->private_data; |
| int ret, stream = substream->stream; |
| |
| mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); |
| 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) { |
| dev_err(fe->dev,"ASoC: hw_params BE failed %d\n", ret); |
| 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(substream, params); |
| if (ret < 0) { |
| dev_err(fe->dev,"ASoC: hw_params FE failed %d\n", ret); |
| 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); |
| mutex_unlock(&fe->card->mutex); |
| return ret; |
| } |
| |
| static int dpcm_do_trigger(struct snd_soc_dpcm *dpcm, |
| struct snd_pcm_substream *substream, int cmd) |
| { |
| int ret; |
| |
| dev_dbg(dpcm->be->dev, "ASoC: trigger BE %s cmd %d\n", |
| dpcm->be->dai_link->name, cmd); |
| |
| ret = soc_pcm_trigger(substream, cmd); |
| if (ret < 0) |
| dev_err(dpcm->be->dev,"ASoC: trigger BE failed %d\n", ret); |
| |
| return ret; |
| } |
| |
| int dpcm_be_dai_trigger(struct snd_soc_pcm_runtime *fe, int stream, |
| int cmd) |
| { |
| 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; |
| |
| switch (cmd) { |
| case SNDRV_PCM_TRIGGER_START: |
| if ((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)) |
| continue; |
| |
| ret = dpcm_do_trigger(dpcm, be_substream, cmd); |
| if (ret) |
| return ret; |
| |
| 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)) |
| continue; |
| |
| ret = dpcm_do_trigger(dpcm, be_substream, cmd); |
| if (ret) |
| return ret; |
| |
| be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; |
| break; |
| case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
| if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED)) |
| continue; |
| |
| ret = dpcm_do_trigger(dpcm, be_substream, cmd); |
| if (ret) |
| return ret; |
| |
| 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)) |
| continue; |
| |
| if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) |
| continue; |
| |
| ret = dpcm_do_trigger(dpcm, be_substream, cmd); |
| if (ret) |
| return ret; |
| |
| 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) |
| continue; |
| |
| if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) |
| continue; |
| |
| ret = dpcm_do_trigger(dpcm, be_substream, cmd); |
| if (ret) |
| return ret; |
| |
| 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) |
| continue; |
| |
| if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) |
| continue; |
| |
| ret = dpcm_do_trigger(dpcm, be_substream, cmd); |
| if (ret) |
| return ret; |
| |
| be->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED; |
| break; |
| } |
| } |
| |
| return 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 = substream->private_data; |
| 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 = substream->private_data; |
| 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: |
| 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: |
| 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 = substream->private_data; |
| 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 ((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_substream); |
| if (ret < 0) { |
| dev_err(be->dev, "ASoC: backend prepare failed %d\n", |
| ret); |
| break; |
| } |
| |
| be->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE; |
| } |
| return ret; |
| } |
| |
| static int dpcm_fe_dai_prepare(struct snd_pcm_substream *substream) |
| { |
| struct snd_soc_pcm_runtime *fe = substream->private_data; |
| int stream = substream->stream, ret = 0; |
| |
| mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); |
| |
| 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(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(substream); |
| if (ret < 0) { |
| dev_err(fe->dev,"ASoC: prepare FE %s failed\n", |
| fe->dai_link->name); |
| goto out; |
| } |
| |
| /* run the stream event for each BE */ |
| dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_START); |
| fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE; |
| |
| out: |
| dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO); |
| mutex_unlock(&fe->card->mutex); |
| |
| return 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); |
| if (err < 0) |
| dev_err(fe->dev,"ASoC: trigger FE failed %d\n", err); |
| } 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); |
| if (err < 0) |
| dev_err(fe->dev,"ASoC: trigger FE failed %d\n", err); |
| } |
| |
| err = dpcm_be_dai_hw_free(fe, stream); |
| if (err < 0) |
| dev_err(fe->dev,"ASoC: hw_free FE failed %d\n", err); |
| |
| err = dpcm_be_dai_shutdown(fe, stream); |
| if (err < 0) |
| dev_err(fe->dev,"ASoC: shutdown FE failed %d\n", err); |
| |
| /* run the stream event for each BE */ |
| dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_NOP); |
| |
| return 0; |
| } |
| |
| 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; |
| unsigned long flags; |
| |
| 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) |
| return -EINVAL; |
| |
| /* 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) { |
| dev_err(fe->dev,"ASoC: bespoke trigger FE failed %d\n", ret); |
| 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) { |
| dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret); |
| goto hw_free; |
| } |
| } |
| |
| return 0; |
| |
| hw_free: |
| dpcm_be_dai_hw_free(fe, stream); |
| close: |
| dpcm_be_dai_shutdown(fe, stream); |
| disconnect: |
| /* disconnect any closed BEs */ |
| spin_lock_irqsave(&fe->card->dpcm_lock, flags); |
| for_each_dpcm_be(fe, stream, dpcm) { |
| struct snd_soc_pcm_runtime *be = dpcm->be; |
| if (be->dpcm[stream].state == SND_SOC_DPCM_STATE_CLOSE) |
| dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; |
| } |
| spin_unlock_irqrestore(&fe->card->dpcm_lock, flags); |
| |
| return 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; |
| int ret; |
| |
| if (!fe->dai_link->dynamic) |
| return 0; |
| |
| if (fe->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(asoc_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(asoc_rtd_to_cpu(fe, 0), stream) || |
| !snd_soc_dai_stream_valid(asoc_rtd_to_codec(fe, 0), stream)) |
| continue; |
| |
| /* skip if FE isn't currently playing/capturing */ |
| if (!snd_soc_dai_stream_active(asoc_rtd_to_cpu(fe, 0), stream) || |
| !snd_soc_dai_stream_active(asoc_rtd_to_codec(fe, 0), stream)) |
| continue; |
| |
| paths = dpcm_path_get(fe, stream, &list); |
| if (paths < 0) { |
| dev_warn(fe->dev, "ASoC: %s no valid %s path\n", |
| fe->dai_link->name, |
| stream == SNDRV_PCM_STREAM_PLAYBACK ? |
| "playback" : "capture"); |
| 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) |
| ret = dpcm_run_update_startup(fe, stream); |
| else |
| ret = dpcm_run_update_shutdown(fe, stream); |
| if (ret < 0) |
| dev_err(fe->dev, "ASoC: failed to shutdown some BEs\n"); |
| 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; |
| |
| mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_RUNTIME); |
| /* 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: |
| mutex_unlock(&card->mutex); |
| 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 = fe_substream->private_data; |
| struct snd_soc_dpcm *dpcm; |
| int stream = fe_substream->stream; |
| |
| /* 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); |
| |
| fe->dpcm[stream].runtime = NULL; |
| } |
| |
| static int dpcm_fe_dai_close(struct snd_pcm_substream *fe_substream) |
| { |
| struct snd_soc_pcm_runtime *fe = fe_substream->private_data; |
| int ret; |
| |
| mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); |
| ret = dpcm_fe_dai_shutdown(fe_substream); |
| |
| dpcm_fe_dai_cleanup(fe_substream); |
| |
| mutex_unlock(&fe->card->mutex); |
| return ret; |
| } |
| |
| static int dpcm_fe_dai_open(struct snd_pcm_substream *fe_substream) |
| { |
| struct snd_soc_pcm_runtime *fe = fe_substream->private_data; |
| struct snd_soc_dapm_widget_list *list; |
| int ret; |
| int stream = fe_substream->stream; |
| |
| mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); |
| fe->dpcm[stream].runtime = fe_substream->runtime; |
| |
| ret = dpcm_path_get(fe, stream, &list); |
| if (ret < 0) { |
| goto open_end; |
| } else if (ret == 0) { |
| dev_dbg(fe->dev, "ASoC: %s no valid %s route\n", |
| fe->dai_link->name, stream ? "capture" : "playback"); |
| } |
| |
| /* 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: |
| mutex_unlock(&fe->card->mutex); |
| return ret; |
| } |
| |
| /* create a new pcm */ |
| int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num) |
| { |
| struct snd_soc_dai *codec_dai; |
| struct snd_soc_dai *cpu_dai; |
| struct snd_soc_component *component; |
| struct snd_pcm *pcm; |
| char new_name[64]; |
| int ret = 0, playback = 0, capture = 0; |
| int stream; |
| int i; |
| |
| if (rtd->dai_link->dynamic && rtd->num_cpus > 1) { |
| dev_err(rtd->dev, |
| "DPCM doesn't support Multi CPU for Front-Ends yet\n"); |
| return -EINVAL; |
| } |
| |
| if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm) { |
| if (rtd->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)) { |
| dev_err(rtd->card->dev, |
| "CPU DAI %s for rtd %s does not support playback\n", |
| cpu_dai->name, |
| rtd->dai_link->stream_name); |
| return -EINVAL; |
| } |
| playback = 1; |
| } |
| if (rtd->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)) { |
| dev_err(rtd->card->dev, |
| "CPU DAI %s for rtd %s does not support capture\n", |
| cpu_dai->name, |
| rtd->dai_link->stream_name); |
| return -EINVAL; |
| } |
| capture = 1; |
| } |
| } else { |
| /* Adapt stream for codec2codec links */ |
| int cpu_capture = rtd->dai_link->params ? |
| SNDRV_PCM_STREAM_PLAYBACK : SNDRV_PCM_STREAM_CAPTURE; |
| int cpu_playback = rtd->dai_link->params ? |
| SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK; |
| |
| for_each_rtd_codec_dais(rtd, i, codec_dai) { |
| if (rtd->num_cpus == 1) { |
| cpu_dai = asoc_rtd_to_cpu(rtd, 0); |
| } else if (rtd->num_cpus == rtd->num_codecs) { |
| cpu_dai = asoc_rtd_to_cpu(rtd, i); |
| } else { |
| dev_err(rtd->card->dev, |
| "N cpus to M codecs link is not supported yet\n"); |
| return -EINVAL; |
| } |
| |
| if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_PLAYBACK) && |
| snd_soc_dai_stream_valid(cpu_dai, cpu_playback)) |
| playback = 1; |
| if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_CAPTURE) && |
| snd_soc_dai_stream_valid(cpu_dai, cpu_capture)) |
| capture = 1; |
| } |
| } |
| |
| if (rtd->dai_link->playback_only) { |
| playback = 1; |
| capture = 0; |
| } |
| |
| if (rtd->dai_link->capture_only) { |
| playback = 0; |
| capture = 1; |
| } |
| |
| /* create the PCM */ |
| if (rtd->dai_link->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, |
| (rtd->num_codecs > 1) ? |
| "multicodec" : asoc_rtd_to_codec(rtd, 0)->name, 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 for %s\n", |
| rtd->dai_link->name); |
| return ret; |
| } |
| dev_dbg(rtd->card->dev, "ASoC: registered pcm #%d %s\n",num, new_name); |
| |
| /* DAPM dai link stream work */ |
| if (rtd->dai_link->params) |
| rtd->close_delayed_work_func = codec2codec_close_delayed_work; |
| else |
| rtd->close_delayed_work_func = snd_soc_close_delayed_work; |
| |
| pcm->nonatomic = rtd->dai_link->nonatomic; |
| rtd->pcm = pcm; |
| pcm->private_data = rtd; |
| |
| if (rtd->dai_link->no_pcm || rtd->dai_link->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_user) |
| rtd->ops.copy_user = snd_soc_pcm_component_copy_user; |
| if (drv->page) |
| rtd->ops.page = snd_soc_pcm_component_page; |
| if (drv->mmap) |
| rtd->ops.mmap = snd_soc_pcm_component_mmap; |
| } |
| |
| 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) { |
| dev_err(rtd->dev, "ASoC: pcm constructor failed: %d\n", ret); |
| return ret; |
| } |
| |
| pcm->no_device_suspend = true; |
| out: |
| dev_info(rtd->card->dev, "%s <-> %s mapping ok\n", |
| (rtd->num_codecs > 1) ? "multicodec" : asoc_rtd_to_codec(rtd, 0)->name, |
| (rtd->num_cpus > 1) ? "multicpu" : asoc_rtd_to_cpu(rtd, 0)->name); |
| 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; |
| unsigned long flags; |
| int i; |
| |
| spin_lock_irqsave(&fe->card->dpcm_lock, flags); |
| 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; |
| } |
| } |
| } |
| spin_unlock_irqrestore(&fe->card->dpcm_lock, flags); |
| |
| /* 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[]
|