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![Claudiu Beznea](/assets/img/avatar_default.png)
Add option to start DMA component after DAI trigger. This is done by filling the new struct snd_soc_component_driver::start_dma_last. Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com> Link: https://lore.kernel.org/r/20230228110145.3770525-2-claudiu.beznea@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
3055 lines
80 KiB
C
3055 lines
80 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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//
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// soc-pcm.c -- ALSA SoC PCM
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//
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// Copyright 2005 Wolfson Microelectronics PLC.
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// Copyright 2005 Openedhand Ltd.
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// Copyright (C) 2010 Slimlogic Ltd.
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// Copyright (C) 2010 Texas Instruments Inc.
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//
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// Authors: Liam Girdwood <lrg@ti.com>
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// Mark Brown <broonie@opensource.wolfsonmicro.com>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/pinctrl/consumer.h>
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#include <linux/pm_runtime.h>
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#include <linux/slab.h>
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#include <linux/workqueue.h>
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#include <linux/export.h>
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#include <linux/debugfs.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include <sound/soc-dpcm.h>
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#include <sound/soc-link.h>
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#include <sound/initval.h>
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#define soc_pcm_ret(rtd, ret) _soc_pcm_ret(rtd, __func__, ret)
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static inline int _soc_pcm_ret(struct snd_soc_pcm_runtime *rtd,
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const char *func, int ret)
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{
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/* Positive, Zero values are not errors */
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if (ret >= 0)
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return ret;
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/* Negative values might be errors */
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switch (ret) {
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case -EPROBE_DEFER:
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case -ENOTSUPP:
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break;
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default:
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dev_err(rtd->dev,
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"ASoC: error at %s on %s: %d\n",
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func, rtd->dai_link->name, ret);
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}
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return ret;
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}
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static inline void snd_soc_dpcm_mutex_lock(struct snd_soc_pcm_runtime *rtd)
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{
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mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
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}
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static inline void snd_soc_dpcm_mutex_unlock(struct snd_soc_pcm_runtime *rtd)
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{
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mutex_unlock(&rtd->card->pcm_mutex);
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}
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#define snd_soc_dpcm_mutex_assert_held(rtd) \
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lockdep_assert_held(&(rtd)->card->pcm_mutex)
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static inline void snd_soc_dpcm_stream_lock_irq(struct snd_soc_pcm_runtime *rtd,
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int stream)
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{
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snd_pcm_stream_lock_irq(snd_soc_dpcm_get_substream(rtd, stream));
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}
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#define snd_soc_dpcm_stream_lock_irqsave_nested(rtd, stream, flags) \
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snd_pcm_stream_lock_irqsave_nested(snd_soc_dpcm_get_substream(rtd, stream), flags)
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static inline void snd_soc_dpcm_stream_unlock_irq(struct snd_soc_pcm_runtime *rtd,
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int stream)
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{
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snd_pcm_stream_unlock_irq(snd_soc_dpcm_get_substream(rtd, stream));
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}
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#define snd_soc_dpcm_stream_unlock_irqrestore(rtd, stream, flags) \
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snd_pcm_stream_unlock_irqrestore(snd_soc_dpcm_get_substream(rtd, stream), flags)
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#define DPCM_MAX_BE_USERS 8
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static inline const char *soc_cpu_dai_name(struct snd_soc_pcm_runtime *rtd)
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{
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return (rtd)->dai_link->num_cpus == 1 ? asoc_rtd_to_cpu(rtd, 0)->name : "multicpu";
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}
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static inline const char *soc_codec_dai_name(struct snd_soc_pcm_runtime *rtd)
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{
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return (rtd)->dai_link->num_codecs == 1 ? asoc_rtd_to_codec(rtd, 0)->name : "multicodec";
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}
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#ifdef CONFIG_DEBUG_FS
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static const char *dpcm_state_string(enum snd_soc_dpcm_state state)
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{
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switch (state) {
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case SND_SOC_DPCM_STATE_NEW:
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return "new";
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case SND_SOC_DPCM_STATE_OPEN:
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return "open";
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case SND_SOC_DPCM_STATE_HW_PARAMS:
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return "hw_params";
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case SND_SOC_DPCM_STATE_PREPARE:
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return "prepare";
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case SND_SOC_DPCM_STATE_START:
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return "start";
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case SND_SOC_DPCM_STATE_STOP:
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return "stop";
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case SND_SOC_DPCM_STATE_SUSPEND:
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return "suspend";
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case SND_SOC_DPCM_STATE_PAUSED:
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return "paused";
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case SND_SOC_DPCM_STATE_HW_FREE:
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return "hw_free";
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case SND_SOC_DPCM_STATE_CLOSE:
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return "close";
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}
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return "unknown";
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}
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static ssize_t dpcm_show_state(struct snd_soc_pcm_runtime *fe,
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int stream, char *buf, size_t size)
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{
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struct snd_pcm_hw_params *params = &fe->dpcm[stream].hw_params;
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struct snd_soc_dpcm *dpcm;
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ssize_t offset = 0;
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/* FE state */
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offset += scnprintf(buf + offset, size - offset,
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"[%s - %s]\n", fe->dai_link->name,
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stream ? "Capture" : "Playback");
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offset += scnprintf(buf + offset, size - offset, "State: %s\n",
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dpcm_state_string(fe->dpcm[stream].state));
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if ((fe->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) &&
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(fe->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP))
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offset += scnprintf(buf + offset, size - offset,
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"Hardware Params: "
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"Format = %s, Channels = %d, Rate = %d\n",
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snd_pcm_format_name(params_format(params)),
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params_channels(params),
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params_rate(params));
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/* BEs state */
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offset += scnprintf(buf + offset, size - offset, "Backends:\n");
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if (list_empty(&fe->dpcm[stream].be_clients)) {
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offset += scnprintf(buf + offset, size - offset,
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" No active DSP links\n");
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goto out;
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}
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for_each_dpcm_be(fe, stream, dpcm) {
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struct snd_soc_pcm_runtime *be = dpcm->be;
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params = &be->dpcm[stream].hw_params;
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offset += scnprintf(buf + offset, size - offset,
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"- %s\n", be->dai_link->name);
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offset += scnprintf(buf + offset, size - offset,
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" State: %s\n",
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dpcm_state_string(be->dpcm[stream].state));
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if ((be->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) &&
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(be->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP))
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offset += scnprintf(buf + offset, size - offset,
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" Hardware Params: "
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"Format = %s, Channels = %d, Rate = %d\n",
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snd_pcm_format_name(params_format(params)),
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params_channels(params),
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params_rate(params));
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}
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out:
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return offset;
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}
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static ssize_t dpcm_state_read_file(struct file *file, char __user *user_buf,
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size_t count, loff_t *ppos)
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{
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struct snd_soc_pcm_runtime *fe = file->private_data;
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ssize_t out_count = PAGE_SIZE, offset = 0, ret = 0;
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int stream;
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char *buf;
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if (fe->dai_link->num_cpus > 1) {
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dev_err(fe->dev,
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"%s doesn't support Multi CPU yet\n", __func__);
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return -EINVAL;
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}
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buf = kmalloc(out_count, GFP_KERNEL);
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if (!buf)
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return -ENOMEM;
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snd_soc_dpcm_mutex_lock(fe);
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for_each_pcm_streams(stream)
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if (snd_soc_dai_stream_valid(asoc_rtd_to_cpu(fe, 0), stream))
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offset += dpcm_show_state(fe, stream,
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buf + offset,
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out_count - offset);
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snd_soc_dpcm_mutex_unlock(fe);
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ret = simple_read_from_buffer(user_buf, count, ppos, buf, offset);
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kfree(buf);
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return ret;
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}
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static const struct file_operations dpcm_state_fops = {
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.open = simple_open,
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.read = dpcm_state_read_file,
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.llseek = default_llseek,
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};
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void soc_dpcm_debugfs_add(struct snd_soc_pcm_runtime *rtd)
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{
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if (!rtd->dai_link->dynamic)
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return;
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if (!rtd->card->debugfs_card_root)
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return;
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rtd->debugfs_dpcm_root = debugfs_create_dir(rtd->dai_link->name,
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rtd->card->debugfs_card_root);
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debugfs_create_file("state", 0444, rtd->debugfs_dpcm_root,
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rtd, &dpcm_state_fops);
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}
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static void dpcm_create_debugfs_state(struct snd_soc_dpcm *dpcm, int stream)
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{
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char *name;
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name = kasprintf(GFP_KERNEL, "%s:%s", dpcm->be->dai_link->name,
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stream ? "capture" : "playback");
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if (name) {
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dpcm->debugfs_state = debugfs_create_dir(
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name, dpcm->fe->debugfs_dpcm_root);
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debugfs_create_u32("state", 0644, dpcm->debugfs_state,
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&dpcm->state);
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kfree(name);
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}
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}
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static void dpcm_remove_debugfs_state(struct snd_soc_dpcm *dpcm)
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{
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debugfs_remove_recursive(dpcm->debugfs_state);
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}
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#else
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static inline void dpcm_create_debugfs_state(struct snd_soc_dpcm *dpcm,
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int stream)
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{
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}
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static inline void dpcm_remove_debugfs_state(struct snd_soc_dpcm *dpcm)
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{
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}
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#endif
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/* Set FE's runtime_update state; the state is protected via PCM stream lock
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* for avoiding the race with trigger callback.
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* If the state is unset and a trigger is pending while the previous operation,
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* process the pending trigger action here.
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*/
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static int dpcm_fe_dai_do_trigger(struct snd_pcm_substream *substream, int cmd);
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static void dpcm_set_fe_update_state(struct snd_soc_pcm_runtime *fe,
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int stream, enum snd_soc_dpcm_update state)
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{
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struct snd_pcm_substream *substream =
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snd_soc_dpcm_get_substream(fe, stream);
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snd_soc_dpcm_stream_lock_irq(fe, stream);
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if (state == SND_SOC_DPCM_UPDATE_NO && fe->dpcm[stream].trigger_pending) {
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dpcm_fe_dai_do_trigger(substream,
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fe->dpcm[stream].trigger_pending - 1);
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fe->dpcm[stream].trigger_pending = 0;
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}
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fe->dpcm[stream].runtime_update = state;
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snd_soc_dpcm_stream_unlock_irq(fe, stream);
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}
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static void dpcm_set_be_update_state(struct snd_soc_pcm_runtime *be,
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int stream, enum snd_soc_dpcm_update state)
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{
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be->dpcm[stream].runtime_update = state;
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}
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/**
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* snd_soc_runtime_action() - Increment/Decrement active count for
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* PCM runtime components
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* @rtd: ASoC PCM runtime that is activated
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* @stream: Direction of the PCM stream
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* @action: Activate stream if 1. Deactivate if -1.
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*
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* Increments/Decrements the active count for all the DAIs and components
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* attached to a PCM runtime.
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* Should typically be called when a stream is opened.
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*
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* Must be called with the rtd->card->pcm_mutex being held
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*/
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void snd_soc_runtime_action(struct snd_soc_pcm_runtime *rtd,
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int stream, int action)
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{
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struct snd_soc_dai *dai;
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int i;
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snd_soc_dpcm_mutex_assert_held(rtd);
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for_each_rtd_dais(rtd, i, dai)
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snd_soc_dai_action(dai, stream, action);
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}
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EXPORT_SYMBOL_GPL(snd_soc_runtime_action);
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/**
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* snd_soc_runtime_ignore_pmdown_time() - Check whether to ignore the power down delay
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* @rtd: The ASoC PCM runtime that should be checked.
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*
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* This function checks whether the power down delay should be ignored for a
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* specific PCM runtime. Returns true if the delay is 0, if it the DAI link has
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* been configured to ignore the delay, or if none of the components benefits
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* from having the delay.
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*/
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bool snd_soc_runtime_ignore_pmdown_time(struct snd_soc_pcm_runtime *rtd)
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{
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struct snd_soc_component *component;
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bool ignore = true;
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int i;
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if (!rtd->pmdown_time || rtd->dai_link->ignore_pmdown_time)
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return true;
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for_each_rtd_components(rtd, i, component)
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ignore &= !component->driver->use_pmdown_time;
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return ignore;
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}
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/**
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* snd_soc_set_runtime_hwparams - set the runtime hardware parameters
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* @substream: the pcm substream
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* @hw: the hardware parameters
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*
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* Sets the substream runtime hardware parameters.
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*/
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int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
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const struct snd_pcm_hardware *hw)
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{
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substream->runtime->hw = *hw;
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return 0;
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}
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EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams);
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/* DPCM stream event, send event to FE and all active BEs. */
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int dpcm_dapm_stream_event(struct snd_soc_pcm_runtime *fe, int dir,
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int event)
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{
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struct snd_soc_dpcm *dpcm;
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snd_soc_dpcm_mutex_assert_held(fe);
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for_each_dpcm_be(fe, dir, dpcm) {
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struct snd_soc_pcm_runtime *be = dpcm->be;
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dev_dbg(be->dev, "ASoC: BE %s event %d dir %d\n",
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be->dai_link->name, event, dir);
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if ((event == SND_SOC_DAPM_STREAM_STOP) &&
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(be->dpcm[dir].users >= 1))
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continue;
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snd_soc_dapm_stream_event(be, dir, event);
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}
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snd_soc_dapm_stream_event(fe, dir, event);
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return 0;
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}
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static void soc_pcm_set_dai_params(struct snd_soc_dai *dai,
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struct snd_pcm_hw_params *params)
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{
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if (params) {
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dai->rate = params_rate(params);
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dai->channels = params_channels(params);
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dai->sample_bits = snd_pcm_format_physical_width(params_format(params));
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} else {
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dai->rate = 0;
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dai->channels = 0;
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dai->sample_bits = 0;
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}
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}
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static int soc_pcm_apply_symmetry(struct snd_pcm_substream *substream,
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struct snd_soc_dai *soc_dai)
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{
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struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
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int ret;
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if (!snd_soc_dai_active(soc_dai))
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return 0;
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#define __soc_pcm_apply_symmetry(name, NAME) \
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if (soc_dai->name && (soc_dai->driver->symmetric_##name || \
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rtd->dai_link->symmetric_##name)) { \
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dev_dbg(soc_dai->dev, "ASoC: Symmetry forces %s to %d\n",\
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#name, soc_dai->name); \
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\
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ret = snd_pcm_hw_constraint_single(substream->runtime, \
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SNDRV_PCM_HW_PARAM_##NAME,\
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soc_dai->name); \
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if (ret < 0) { \
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dev_err(soc_dai->dev, \
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"ASoC: Unable to apply %s constraint: %d\n",\
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#name, ret); \
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return ret; \
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} \
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}
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__soc_pcm_apply_symmetry(rate, RATE);
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__soc_pcm_apply_symmetry(channels, CHANNELS);
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__soc_pcm_apply_symmetry(sample_bits, SAMPLE_BITS);
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return 0;
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}
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static int soc_pcm_params_symmetry(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params)
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{
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struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
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struct snd_soc_dai d;
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struct snd_soc_dai *dai;
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struct snd_soc_dai *cpu_dai;
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unsigned int symmetry, i;
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d.name = __func__;
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soc_pcm_set_dai_params(&d, params);
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#define __soc_pcm_params_symmetry(xxx) \
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symmetry = rtd->dai_link->symmetric_##xxx; \
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for_each_rtd_dais(rtd, i, dai) \
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symmetry |= dai->driver->symmetric_##xxx; \
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\
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if (symmetry) \
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for_each_rtd_cpu_dais(rtd, i, cpu_dai) \
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if (!snd_soc_dai_is_dummy(cpu_dai) && \
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cpu_dai->xxx && cpu_dai->xxx != d.xxx) { \
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dev_err(rtd->dev, "ASoC: unmatched %s symmetry: %s:%d - %s:%d\n", \
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#xxx, cpu_dai->name, cpu_dai->xxx, d.name, d.xxx); \
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return -EINVAL; \
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}
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/* reject unmatched parameters when applying symmetry */
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__soc_pcm_params_symmetry(rate);
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__soc_pcm_params_symmetry(channels);
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__soc_pcm_params_symmetry(sample_bits);
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return 0;
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}
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static void soc_pcm_update_symmetry(struct snd_pcm_substream *substream)
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{
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struct snd_soc_pcm_runtime *rtd = asoc_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 = asoc_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 = asoc_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 = asoc_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 = asoc_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 = asoc_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);
|
|
/* clear the corresponding DAIs parameters when going to be inactive */
|
|
for_each_rtd_dais(rtd, i, dai) {
|
|
if (snd_soc_dai_active(dai) == 0)
|
|
soc_pcm_set_dai_params(dai, NULL);
|
|
|
|
if (snd_soc_dai_stream_active(dai, substream->stream) == 0)
|
|
snd_soc_dai_digital_mute(dai, 1, substream->stream);
|
|
}
|
|
}
|
|
|
|
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 = asoc_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 = asoc_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 = asoc_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)
|
|
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 = asoc_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);
|
|
|
|
/* 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 = asoc_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;
|
|
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) {
|
|
struct snd_pcm_hw_params codec_params;
|
|
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 */
|
|
codec_params = *params;
|
|
|
|
/* fixup params based on TDM slot masks */
|
|
if (tdm_mask)
|
|
soc_pcm_codec_params_fixup(&codec_params, tdm_mask);
|
|
|
|
ret = snd_soc_dai_hw_params(codec_dai, substream,
|
|
&codec_params);
|
|
if(ret < 0)
|
|
goto out;
|
|
|
|
soc_pcm_set_dai_params(codec_dai, &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 out;
|
|
|
|
/* store the parameters for each DAI */
|
|
soc_pcm_set_dai_params(cpu_dai, params);
|
|
snd_soc_dapm_update_dai(substream, 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 = asoc_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;
|
|
}
|
|
|
|
static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
|
|
struct snd_soc_component *component;
|
|
int ret = -EINVAL, _ret = 0, start_dma_last = 0, i;
|
|
int rollback = 0;
|
|
|
|
switch (cmd) {
|
|
case SNDRV_PCM_TRIGGER_START:
|
|
case SNDRV_PCM_TRIGGER_RESUME:
|
|
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
|
|
/* Do we need to start dma last? */
|
|
for_each_rtd_components(rtd, i, component) {
|
|
if (component->driver->start_dma_last) {
|
|
start_dma_last = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
ret = snd_soc_link_trigger(substream, cmd, 0);
|
|
if (ret < 0)
|
|
goto start_err;
|
|
|
|
if (start_dma_last) {
|
|
ret = snd_soc_pcm_dai_trigger(substream, cmd, 0);
|
|
if (ret < 0)
|
|
goto start_err;
|
|
|
|
ret = snd_soc_pcm_component_trigger(substream, cmd, 0);
|
|
} else {
|
|
ret = snd_soc_pcm_component_trigger(substream, cmd, 0);
|
|
if (ret < 0)
|
|
goto start_err;
|
|
|
|
ret = snd_soc_pcm_dai_trigger(substream, cmd, 0);
|
|
}
|
|
start_err:
|
|
if (ret < 0)
|
|
rollback = 1;
|
|
}
|
|
|
|
if (rollback) {
|
|
_ret = ret;
|
|
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;
|
|
}
|
|
}
|
|
|
|
switch (cmd) {
|
|
case SNDRV_PCM_TRIGGER_STOP:
|
|
case SNDRV_PCM_TRIGGER_SUSPEND:
|
|
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
|
|
if (rtd->dai_link->stop_dma_first) {
|
|
ret = snd_soc_pcm_component_trigger(substream, cmd, rollback);
|
|
if (ret < 0)
|
|
break;
|
|
|
|
ret = snd_soc_pcm_dai_trigger(substream, cmd, rollback);
|
|
if (ret < 0)
|
|
break;
|
|
} else {
|
|
ret = snd_soc_pcm_dai_trigger(substream, cmd, rollback);
|
|
if (ret < 0)
|
|
break;
|
|
|
|
ret = snd_soc_pcm_component_trigger(substream, cmd, rollback);
|
|
if (ret < 0)
|
|
break;
|
|
}
|
|
ret = snd_soc_link_trigger(substream, cmd, rollback);
|
|
break;
|
|
}
|
|
|
|
if (_ret)
|
|
ret = _ret;
|
|
|
|
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;
|
|
be->dpcm[stream].runtime = fe->dpcm[stream].runtime;
|
|
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 = asoc_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;
|
|
int i, new = 0, err;
|
|
|
|
/* don't connect if FE is not running */
|
|
if (!fe->dpcm[stream].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_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 = be->dpcm[stream].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 = asoc_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;
|
|
int i;
|
|
|
|
soc_pcm_hw_init(hw);
|
|
|
|
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 = asoc_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 = asoc_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(
|
|
asoc_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 = asoc_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 = asoc_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 = asoc_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 = asoc_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 = asoc_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 = asoc_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 = asoc_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 = asoc_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 = asoc_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 = asoc_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 ((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 = asoc_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(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(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)
|
|
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;
|
|
|
|
mutex_lock_nested(&card->pcm_mutex, card->pcm_subclass);
|
|
/* 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->pcm_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 = asoc_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);
|
|
|
|
fe->dpcm[stream].runtime = NULL;
|
|
}
|
|
|
|
static int dpcm_fe_dai_close(struct snd_pcm_substream *fe_substream)
|
|
{
|
|
struct snd_soc_pcm_runtime *fe = asoc_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 = asoc_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);
|
|
fe->dpcm[stream].runtime = fe_substream->runtime;
|
|
|
|
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 *cpu_dai;
|
|
int i;
|
|
|
|
if (rtd->dai_link->dynamic && rtd->dai_link->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) {
|
|
int stream;
|
|
|
|
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)) {
|
|
*playback = 1;
|
|
break;
|
|
}
|
|
}
|
|
if (!*playback) {
|
|
dev_err(rtd->card->dev,
|
|
"No CPU DAIs support playback for stream %s\n",
|
|
rtd->dai_link->stream_name);
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
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)) {
|
|
*capture = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!*capture) {
|
|
dev_err(rtd->card->dev,
|
|
"No CPU DAIs support capture for stream %s\n",
|
|
rtd->dai_link->stream_name);
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
} else {
|
|
struct snd_soc_dai *codec_dai;
|
|
|
|
/* 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->dai_link->num_cpus == 1) {
|
|
cpu_dai = asoc_rtd_to_cpu(rtd, 0);
|
|
} else if (rtd->dai_link->num_cpus == rtd->dai_link->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;
|
|
}
|
|
|
|
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->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->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->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 (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);
|