forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
2902 lines
76 KiB
2902 lines
76 KiB
// SPDX-License-Identifier: GPL-2.0+ |
|
// |
|
// soc-pcm.c -- ALSA SoC PCM |
|
// |
|
// Copyright 2005 Wolfson Microelectronics PLC. |
|
// Copyright 2005 Openedhand Ltd. |
|
// Copyright (C) 2010 Slimlogic Ltd. |
|
// Copyright (C) 2010 Texas Instruments Inc. |
|
// |
|
// Authors: Liam Girdwood <[email protected]> |
|
// Mark Brown <[email protected]> |
|
|
|
#include <linux/kernel.h> |
|
#include <linux/init.h> |
|
#include <linux/delay.h> |
|
#include <linux/pinctrl/consumer.h> |
|
#include <linux/pm_runtime.h> |
|
#include <linux/slab.h> |
|
#include <linux/workqueue.h> |
|
#include <linux/export.h> |
|
#include <linux/debugfs.h> |
|
#include <sound/core.h> |
|
#include <sound/pcm.h> |
|
#include <sound/pcm_params.h> |
|
#include <sound/soc.h> |
|
#include <sound/soc-dpcm.h> |
|
#include <sound/soc-link.h> |
|
#include <sound/initval.h> |
|
|
|
#define DPCM_MAX_BE_USERS 8 |
|
|
|
static inline const char *soc_cpu_dai_name(struct snd_soc_pcm_runtime *rtd) |
|
{ |
|
return (rtd)->num_cpus == 1 ? asoc_rtd_to_cpu(rtd, 0)->name : "multicpu"; |
|
} |
|
static inline const char *soc_codec_dai_name(struct snd_soc_pcm_runtime *rtd) |
|
{ |
|
return (rtd)->num_codecs == 1 ? asoc_rtd_to_codec(rtd, 0)->name : "multicodec"; |
|
} |
|
|
|
#ifdef CONFIG_DEBUG_FS |
|
static const char *dpcm_state_string(enum snd_soc_dpcm_state state) |
|
{ |
|
switch (state) { |
|
case SND_SOC_DPCM_STATE_NEW: |
|
return "new"; |
|
case SND_SOC_DPCM_STATE_OPEN: |
|
return "open"; |
|
case SND_SOC_DPCM_STATE_HW_PARAMS: |
|
return "hw_params"; |
|
case SND_SOC_DPCM_STATE_PREPARE: |
|
return "prepare"; |
|
case SND_SOC_DPCM_STATE_START: |
|
return "start"; |
|
case SND_SOC_DPCM_STATE_STOP: |
|
return "stop"; |
|
case SND_SOC_DPCM_STATE_SUSPEND: |
|
return "suspend"; |
|
case SND_SOC_DPCM_STATE_PAUSED: |
|
return "paused"; |
|
case SND_SOC_DPCM_STATE_HW_FREE: |
|
return "hw_free"; |
|
case SND_SOC_DPCM_STATE_CLOSE: |
|
return "close"; |
|
} |
|
|
|
return "unknown"; |
|
} |
|
|
|
static ssize_t dpcm_show_state(struct snd_soc_pcm_runtime *fe, |
|
int stream, char *buf, size_t size) |
|
{ |
|
struct snd_pcm_hw_params *params = &fe->dpcm[stream].hw_params; |
|
struct snd_soc_dpcm *dpcm; |
|
ssize_t offset = 0; |
|
unsigned long flags; |
|
|
|
/* FE state */ |
|
offset += scnprintf(buf + offset, size - offset, |
|
"[%s - %s]\n", fe->dai_link->name, |
|
stream ? "Capture" : "Playback"); |
|
|
|
offset += scnprintf(buf + offset, size - offset, "State: %s\n", |
|
dpcm_state_string(fe->dpcm[stream].state)); |
|
|
|
if ((fe->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) && |
|
(fe->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP)) |
|
offset += scnprintf(buf + offset, size - offset, |
|
"Hardware Params: " |
|
"Format = %s, Channels = %d, Rate = %d\n", |
|
snd_pcm_format_name(params_format(params)), |
|
params_channels(params), |
|
params_rate(params)); |
|
|
|
/* BEs state */ |
|
offset += scnprintf(buf + offset, size - offset, "Backends:\n"); |
|
|
|
if (list_empty(&fe->dpcm[stream].be_clients)) { |
|
offset += scnprintf(buf + offset, size - offset, |
|
" No active DSP links\n"); |
|
goto out; |
|
} |
|
|
|
spin_lock_irqsave(&fe->card->dpcm_lock, flags); |
|
for_each_dpcm_be(fe, stream, dpcm) { |
|
struct snd_soc_pcm_runtime *be = dpcm->be; |
|
params = &dpcm->hw_params; |
|
|
|
offset += scnprintf(buf + offset, size - offset, |
|
"- %s\n", be->dai_link->name); |
|
|
|
offset += scnprintf(buf + offset, size - offset, |
|
" State: %s\n", |
|
dpcm_state_string(be->dpcm[stream].state)); |
|
|
|
if ((be->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) && |
|
(be->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP)) |
|
offset += scnprintf(buf + offset, size - offset, |
|
" Hardware Params: " |
|
"Format = %s, Channels = %d, Rate = %d\n", |
|
snd_pcm_format_name(params_format(params)), |
|
params_channels(params), |
|
params_rate(params)); |
|
} |
|
spin_unlock_irqrestore(&fe->card->dpcm_lock, flags); |
|
out: |
|
return offset; |
|
} |
|
|
|
static ssize_t dpcm_state_read_file(struct file *file, char __user *user_buf, |
|
size_t count, loff_t *ppos) |
|
{ |
|
struct snd_soc_pcm_runtime *fe = file->private_data; |
|
ssize_t out_count = PAGE_SIZE, offset = 0, ret = 0; |
|
int stream; |
|
char *buf; |
|
|
|
if (fe->num_cpus > 1) { |
|
dev_err(fe->dev, |
|
"%s doesn't support Multi CPU yet\n", __func__); |
|
return -EINVAL; |
|
} |
|
|
|
buf = kmalloc(out_count, GFP_KERNEL); |
|
if (!buf) |
|
return -ENOMEM; |
|
|
|
for_each_pcm_streams(stream) |
|
if (snd_soc_dai_stream_valid(asoc_rtd_to_cpu(fe, 0), stream)) |
|
offset += dpcm_show_state(fe, stream, |
|
buf + offset, |
|
out_count - offset); |
|
|
|
ret = simple_read_from_buffer(user_buf, count, ppos, buf, offset); |
|
|
|
kfree(buf); |
|
return ret; |
|
} |
|
|
|
static const struct file_operations dpcm_state_fops = { |
|
.open = simple_open, |
|
.read = dpcm_state_read_file, |
|
.llseek = default_llseek, |
|
}; |
|
|
|
void soc_dpcm_debugfs_add(struct snd_soc_pcm_runtime *rtd) |
|
{ |
|
if (!rtd->dai_link->dynamic) |
|
return; |
|
|
|
if (!rtd->card->debugfs_card_root) |
|
return; |
|
|
|
rtd->debugfs_dpcm_root = debugfs_create_dir(rtd->dai_link->name, |
|
rtd->card->debugfs_card_root); |
|
|
|
debugfs_create_file("state", 0444, rtd->debugfs_dpcm_root, |
|
rtd, &dpcm_state_fops); |
|
} |
|
|
|
static void dpcm_create_debugfs_state(struct snd_soc_dpcm *dpcm, int stream) |
|
{ |
|
char *name; |
|
|
|
name = kasprintf(GFP_KERNEL, "%s:%s", dpcm->be->dai_link->name, |
|
stream ? "capture" : "playback"); |
|
if (name) { |
|
dpcm->debugfs_state = debugfs_create_dir( |
|
name, dpcm->fe->debugfs_dpcm_root); |
|
debugfs_create_u32("state", 0644, dpcm->debugfs_state, |
|
&dpcm->state); |
|
kfree(name); |
|
} |
|
} |
|
|
|
static void dpcm_remove_debugfs_state(struct snd_soc_dpcm *dpcm) |
|
{ |
|
debugfs_remove_recursive(dpcm->debugfs_state); |
|
} |
|
|
|
#else |
|
static inline void dpcm_create_debugfs_state(struct snd_soc_dpcm *dpcm, |
|
int stream) |
|
{ |
|
} |
|
|
|
static inline void dpcm_remove_debugfs_state(struct snd_soc_dpcm *dpcm) |
|
{ |
|
} |
|
#endif |
|
|
|
/* Set FE's runtime_update state; the state is protected via PCM stream lock |
|
* for avoiding the race with trigger callback. |
|
* If the state is unset and a trigger is pending while the previous operation, |
|
* process the pending trigger action here. |
|
*/ |
|
static int dpcm_fe_dai_do_trigger(struct snd_pcm_substream *substream, int cmd); |
|
static void dpcm_set_fe_update_state(struct snd_soc_pcm_runtime *fe, |
|
int stream, enum snd_soc_dpcm_update state) |
|
{ |
|
struct snd_pcm_substream *substream = |
|
snd_soc_dpcm_get_substream(fe, stream); |
|
|
|
snd_pcm_stream_lock_irq(substream); |
|
if (state == SND_SOC_DPCM_UPDATE_NO && fe->dpcm[stream].trigger_pending) { |
|
dpcm_fe_dai_do_trigger(substream, |
|
fe->dpcm[stream].trigger_pending - 1); |
|
fe->dpcm[stream].trigger_pending = 0; |
|
} |
|
fe->dpcm[stream].runtime_update = state; |
|
snd_pcm_stream_unlock_irq(substream); |
|
} |
|
|
|
static void dpcm_set_be_update_state(struct snd_soc_pcm_runtime *be, |
|
int stream, enum snd_soc_dpcm_update state) |
|
{ |
|
be->dpcm[stream].runtime_update = state; |
|
} |
|
|
|
/** |
|
* snd_soc_runtime_action() - Increment/Decrement active count for |
|
* PCM runtime components |
|
* @rtd: ASoC PCM runtime that is activated |
|
* @stream: Direction of the PCM stream |
|
* @action: Activate stream if 1. Deactivate if -1. |
|
* |
|
* Increments/Decrements the active count for all the DAIs and components |
|
* attached to a PCM runtime. |
|
* Should typically be called when a stream is opened. |
|
* |
|
* Must be called with the rtd->card->pcm_mutex being held |
|
*/ |
|
void snd_soc_runtime_action(struct snd_soc_pcm_runtime *rtd, |
|
int stream, int action) |
|
{ |
|
struct snd_soc_dai *dai; |
|
int i; |
|
|
|
lockdep_assert_held(&rtd->card->pcm_mutex); |
|
|
|
for_each_rtd_dais(rtd, i, dai) |
|
snd_soc_dai_action(dai, stream, action); |
|
} |
|
EXPORT_SYMBOL_GPL(snd_soc_runtime_action); |
|
|
|
/** |
|
* snd_soc_runtime_ignore_pmdown_time() - Check whether to ignore the power down delay |
|
* @rtd: The ASoC PCM runtime that should be checked. |
|
* |
|
* This function checks whether the power down delay should be ignored for a |
|
* specific PCM runtime. Returns true if the delay is 0, if it the DAI link has |
|
* been configured to ignore the delay, or if none of the components benefits |
|
* from having the delay. |
|
*/ |
|
bool snd_soc_runtime_ignore_pmdown_time(struct snd_soc_pcm_runtime *rtd) |
|
{ |
|
struct snd_soc_component *component; |
|
bool ignore = true; |
|
int i; |
|
|
|
if (!rtd->pmdown_time || rtd->dai_link->ignore_pmdown_time) |
|
return true; |
|
|
|
for_each_rtd_components(rtd, i, component) |
|
ignore &= !component->driver->use_pmdown_time; |
|
|
|
return ignore; |
|
} |
|
|
|
/** |
|
* snd_soc_set_runtime_hwparams - set the runtime hardware parameters |
|
* @substream: the pcm substream |
|
* @hw: the hardware parameters |
|
* |
|
* Sets the substream runtime hardware parameters. |
|
*/ |
|
int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream, |
|
const struct snd_pcm_hardware *hw) |
|
{ |
|
substream->runtime->hw = *hw; |
|
|
|
return 0; |
|
} |
|
EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams); |
|
|
|
/* DPCM stream event, send event to FE and all active BEs. */ |
|
int dpcm_dapm_stream_event(struct snd_soc_pcm_runtime *fe, int dir, |
|
int event) |
|
{ |
|
struct snd_soc_dpcm *dpcm; |
|
|
|
for_each_dpcm_be(fe, dir, dpcm) { |
|
|
|
struct snd_soc_pcm_runtime *be = dpcm->be; |
|
|
|
dev_dbg(be->dev, "ASoC: BE %s event %d dir %d\n", |
|
be->dai_link->name, event, dir); |
|
|
|
if ((event == SND_SOC_DAPM_STREAM_STOP) && |
|
(be->dpcm[dir].users >= 1)) |
|
continue; |
|
|
|
snd_soc_dapm_stream_event(be, dir, event); |
|
} |
|
|
|
snd_soc_dapm_stream_event(fe, dir, event); |
|
|
|
return 0; |
|
} |
|
|
|
static void soc_pcm_set_dai_params(struct snd_soc_dai *dai, |
|
struct snd_pcm_hw_params *params) |
|
{ |
|
if (params) { |
|
dai->rate = params_rate(params); |
|
dai->channels = params_channels(params); |
|
dai->sample_bits = snd_pcm_format_physical_width(params_format(params)); |
|
} else { |
|
dai->rate = 0; |
|
dai->channels = 0; |
|
dai->sample_bits = 0; |
|
} |
|
} |
|
|
|
static int soc_pcm_apply_symmetry(struct snd_pcm_substream *substream, |
|
struct snd_soc_dai *soc_dai) |
|
{ |
|
struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); |
|
int ret; |
|
|
|
if (!snd_soc_dai_active(soc_dai)) |
|
return 0; |
|
|
|
#define __soc_pcm_apply_symmetry(name, NAME) \ |
|
if (soc_dai->name && (soc_dai->driver->symmetric_##name || \ |
|
rtd->dai_link->symmetric_##name)) { \ |
|
dev_dbg(soc_dai->dev, "ASoC: Symmetry forces %s to %d\n",\ |
|
#name, soc_dai->name); \ |
|
\ |
|
ret = snd_pcm_hw_constraint_single(substream->runtime, \ |
|
SNDRV_PCM_HW_PARAM_##NAME,\ |
|
soc_dai->name); \ |
|
if (ret < 0) { \ |
|
dev_err(soc_dai->dev, \ |
|
"ASoC: Unable to apply %s constraint: %d\n",\ |
|
#name, ret); \ |
|
return ret; \ |
|
} \ |
|
} |
|
|
|
__soc_pcm_apply_symmetry(rate, RATE); |
|
__soc_pcm_apply_symmetry(channels, CHANNELS); |
|
__soc_pcm_apply_symmetry(sample_bits, SAMPLE_BITS); |
|
|
|
return 0; |
|
} |
|
|
|
static int soc_pcm_params_symmetry(struct snd_pcm_substream *substream, |
|
struct snd_pcm_hw_params *params) |
|
{ |
|
struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); |
|
struct snd_soc_dai d; |
|
struct snd_soc_dai *dai; |
|
struct snd_soc_dai *cpu_dai; |
|
unsigned int symmetry, i; |
|
|
|
d.name = __func__; |
|
soc_pcm_set_dai_params(&d, params); |
|
|
|
#define __soc_pcm_params_symmetry(xxx) \ |
|
symmetry = rtd->dai_link->symmetric_##xxx; \ |
|
for_each_rtd_dais(rtd, i, dai) \ |
|
symmetry |= dai->driver->symmetric_##xxx; \ |
|
\ |
|
if (symmetry) \ |
|
for_each_rtd_cpu_dais(rtd, i, cpu_dai) \ |
|
if (!snd_soc_dai_is_dummy(cpu_dai) && \ |
|
cpu_dai->xxx && cpu_dai->xxx != d.xxx) { \ |
|
dev_err(rtd->dev, "ASoC: unmatched %s symmetry: %s:%d - %s:%d\n", \ |
|
#xxx, cpu_dai->name, cpu_dai->xxx, d.name, d.xxx); \ |
|
return -EINVAL; \ |
|
} |
|
|
|
/* reject unmatched parameters when applying symmetry */ |
|
__soc_pcm_params_symmetry(rate); |
|
__soc_pcm_params_symmetry(channels); |
|
__soc_pcm_params_symmetry(sample_bits); |
|
|
|
return 0; |
|
} |
|
|
|
static void soc_pcm_update_symmetry(struct snd_pcm_substream *substream) |
|
{ |
|
struct snd_soc_pcm_runtime *rtd = 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->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_pcm_substream *substream, int rollback) |
|
{ |
|
struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); |
|
struct snd_soc_component *component; |
|
struct snd_soc_dai *dai; |
|
int i; |
|
|
|
mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass); |
|
|
|
if (!rollback) |
|
snd_soc_runtime_deactivate(rtd, 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); |
|
|
|
|
|
mutex_unlock(&rtd->card->pcm_mutex); |
|
|
|
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_pcm_substream *substream) |
|
{ |
|
return soc_pcm_clean(substream, 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_pcm_substream *substream) |
|
{ |
|
struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); |
|
struct snd_soc_component *component; |
|
struct snd_soc_dai *dai; |
|
int i, ret = 0; |
|
|
|
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 pm_err; |
|
|
|
mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass); |
|
|
|
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; |
|
|
|
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
|
dai->tx_mask = 0; |
|
else |
|
dai->rx_mask = 0; |
|
} |
|
|
|
/* Dynamic PCM DAI links compat checks use dynamic capabilities */ |
|
if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm) |
|
goto dynamic; |
|
|
|
/* Check that the codec and cpu DAIs are compatible */ |
|
soc_pcm_init_runtime_hw(substream); |
|
|
|
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: |
|
mutex_unlock(&rtd->card->pcm_mutex); |
|
pm_err: |
|
if (ret < 0) { |
|
soc_pcm_clean(substream, 1); |
|
dev_err(rtd->dev, "%s() failed (%d)", __func__, ret); |
|
} |
|
|
|
return ret; |
|
} |
|
|
|
static void codec2codec_close_delayed_work(struct snd_soc_pcm_runtime *rtd) |
|
{ |
|
/* |
|
* Currently nothing to do for c2c links |
|
* Since c2c links are internal nodes in the DAPM graph and |
|
* don't interface with the outside world or application layer |
|
* we don't have to do any special handling on close. |
|
*/ |
|
} |
|
|
|
/* |
|
* Called by ALSA when the PCM substream is prepared, can set format, sample |
|
* rate, etc. This function is non atomic and can be called multiple times, |
|
* it can refer to the runtime info. |
|
*/ |
|
static int soc_pcm_prepare(struct snd_pcm_substream *substream) |
|
{ |
|
struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); |
|
struct snd_soc_dai *dai; |
|
int i, ret = 0; |
|
|
|
mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass); |
|
|
|
ret = snd_soc_link_prepare(substream); |
|
if (ret < 0) |
|
goto out; |
|
|
|
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: |
|
mutex_unlock(&rtd->card->pcm_mutex); |
|
|
|
if (ret < 0) |
|
dev_err(rtd->dev, "ASoC: %s() failed (%d)\n", __func__, ret); |
|
|
|
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_pcm_substream *substream, int rollback) |
|
{ |
|
struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); |
|
struct snd_soc_dai *dai; |
|
int i; |
|
|
|
mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass); |
|
|
|
/* clear the corresponding DAIs parameters when going to be inactive */ |
|
for_each_rtd_dais(rtd, i, dai) { |
|
int active = snd_soc_dai_stream_active(dai, substream->stream); |
|
|
|
if (snd_soc_dai_active(dai) == 1) |
|
soc_pcm_set_dai_params(dai, NULL); |
|
|
|
if (active == 1) |
|
snd_soc_dai_digital_mute(dai, 1, substream->stream); |
|
} |
|
|
|
/* run the stream event */ |
|
snd_soc_dapm_stream_stop(rtd, substream->stream); |
|
|
|
/* free any machine hw params */ |
|
snd_soc_link_hw_free(substream, rollback); |
|
|
|
/* free any component resources */ |
|
snd_soc_pcm_component_hw_free(substream, rollback); |
|
|
|
/* now free hw params for the DAIs */ |
|
for_each_rtd_dais(rtd, i, dai) { |
|
if (!snd_soc_dai_stream_valid(dai, substream->stream)) |
|
continue; |
|
|
|
snd_soc_dai_hw_free(dai, substream, rollback); |
|
} |
|
|
|
mutex_unlock(&rtd->card->pcm_mutex); |
|
return 0; |
|
} |
|
|
|
/* |
|
* Frees resources allocated by hw_params, can be called multiple times |
|
*/ |
|
static int soc_pcm_hw_free(struct snd_pcm_substream *substream) |
|
{ |
|
return soc_pcm_hw_clean(substream, 0); |
|
} |
|
|
|
/* |
|
* Called by ALSA when the hardware params are set by application. This |
|
* function can also be called multiple times and can allocate buffers |
|
* (using snd_pcm_lib_* ). It's non-atomic. |
|
*/ |
|
static int soc_pcm_hw_params(struct snd_pcm_substream *substream, |
|
struct snd_pcm_hw_params *params) |
|
{ |
|
struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); |
|
struct snd_soc_dai *cpu_dai; |
|
struct snd_soc_dai *codec_dai; |
|
int i, ret = 0; |
|
|
|
mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass); |
|
|
|
ret = soc_pcm_params_symmetry(substream, params); |
|
if (ret) |
|
goto out; |
|
|
|
ret = snd_soc_link_hw_params(substream, params); |
|
if (ret < 0) |
|
goto out; |
|
|
|
for_each_rtd_codec_dais(rtd, i, codec_dai) { |
|
struct snd_pcm_hw_params codec_params; |
|
|
|
/* |
|
* Skip CODECs which don't support the current stream type, |
|
* the idea being that if a CODEC is not used for the currently |
|
* set up transfer direction, it should not need to be |
|
* configured, especially since the configuration used might |
|
* not even be supported by that CODEC. There may be cases |
|
* however where a CODEC needs to be set up although it is |
|
* actually not being used for the transfer, e.g. if a |
|
* capture-only CODEC is acting as an LRCLK and/or BCLK master |
|
* for the DAI link including a playback-only CODEC. |
|
* If this becomes necessary, we will have to augment the |
|
* machine driver setup with information on how to act, so |
|
* we can do the right thing here. |
|
*/ |
|
if (!snd_soc_dai_stream_valid(codec_dai, substream->stream)) |
|
continue; |
|
|
|
/* copy params for each codec */ |
|
codec_params = *params; |
|
|
|
/* fixup params based on TDM slot masks */ |
|
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && |
|
codec_dai->tx_mask) |
|
soc_pcm_codec_params_fixup(&codec_params, |
|
codec_dai->tx_mask); |
|
|
|
if (substream->stream == SNDRV_PCM_STREAM_CAPTURE && |
|
codec_dai->rx_mask) |
|
soc_pcm_codec_params_fixup(&codec_params, |
|
codec_dai->rx_mask); |
|
|
|
ret = snd_soc_dai_hw_params(codec_dai, substream, |
|
&codec_params); |
|
if(ret < 0) |
|
goto 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: |
|
mutex_unlock(&rtd->card->pcm_mutex); |
|
|
|
if (ret < 0) { |
|
soc_pcm_hw_clean(substream, 1); |
|
dev_err(rtd->dev, "ASoC: %s() failed (%d)\n", __func__, ret); |
|
} |
|
|
|
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); |
|
int ret = -EINVAL, _ret = 0; |
|
int rollback = 0; |
|
|
|
switch (cmd) { |
|
case SNDRV_PCM_TRIGGER_START: |
|
case SNDRV_PCM_TRIGGER_RESUME: |
|
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
|
ret = snd_soc_link_trigger(substream, cmd, 0); |
|
if (ret < 0) |
|
goto start_err; |
|
|
|
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 accordingly. |
|
*/ |
|
static snd_pcm_uframes_t soc_pcm_pointer(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; |
|
struct snd_pcm_runtime *runtime = substream->runtime; |
|
snd_pcm_uframes_t offset = 0; |
|
snd_pcm_sframes_t delay = 0; |
|
snd_pcm_sframes_t codec_delay = 0; |
|
snd_pcm_sframes_t cpu_delay = 0; |
|
int i; |
|
|
|
/* clearing the previous total delay */ |
|
runtime->delay = 0; |
|
|
|
offset = snd_soc_pcm_component_pointer(substream); |
|
|
|
/* base delay if assigned in pointer callback */ |
|
delay = runtime->delay; |
|
|
|
for_each_rtd_cpu_dais(rtd, i, cpu_dai) { |
|
cpu_delay = max(cpu_delay, |
|
snd_soc_dai_delay(cpu_dai, substream)); |
|
} |
|
delay += cpu_delay; |
|
|
|
for_each_rtd_codec_dais(rtd, i, codec_dai) { |
|
codec_delay = max(codec_delay, |
|
snd_soc_dai_delay(codec_dai, substream)); |
|
} |
|
delay += codec_delay; |
|
|
|
runtime->delay = delay; |
|
|
|
return offset; |
|
} |
|
|
|
/* connect a FE and BE */ |
|
static int dpcm_be_connect(struct snd_soc_pcm_runtime *fe, |
|
struct snd_soc_pcm_runtime *be, int stream) |
|
{ |
|
struct snd_soc_dpcm *dpcm; |
|
unsigned long flags; |
|
|
|
/* only add new dpcms */ |
|
for_each_dpcm_be(fe, stream, dpcm) { |
|
if (dpcm->be == be && dpcm->fe == fe) |
|
return 0; |
|
} |
|
|
|
dpcm = kzalloc(sizeof(struct snd_soc_dpcm), GFP_KERNEL); |
|
if (!dpcm) |
|
return -ENOMEM; |
|
|
|
dpcm->be = be; |
|
dpcm->fe = fe; |
|
be->dpcm[stream].runtime = fe->dpcm[stream].runtime; |
|
dpcm->state = SND_SOC_DPCM_LINK_STATE_NEW; |
|
spin_lock_irqsave(&fe->card->dpcm_lock, flags); |
|
list_add(&dpcm->list_be, &fe->dpcm[stream].be_clients); |
|
list_add(&dpcm->list_fe, &be->dpcm[stream].fe_clients); |
|
spin_unlock_irqrestore(&fe->card->dpcm_lock, flags); |
|
|
|
dev_dbg(fe->dev, "connected new DPCM %s path %s %s %s\n", |
|
stream ? "capture" : "playback", fe->dai_link->name, |
|
stream ? "<-" : "->", be->dai_link->name); |
|
|
|
dpcm_create_debugfs_state(dpcm, stream); |
|
|
|
return 1; |
|
} |
|
|
|
/* reparent a BE onto another FE */ |
|
static void dpcm_be_reparent(struct snd_soc_pcm_runtime *fe, |
|
struct snd_soc_pcm_runtime *be, int stream) |
|
{ |
|
struct snd_soc_dpcm *dpcm; |
|
struct snd_pcm_substream *fe_substream, *be_substream; |
|
|
|
/* reparent if BE is connected to other FEs */ |
|
if (!be->dpcm[stream].users) |
|
return; |
|
|
|
be_substream = snd_soc_dpcm_get_substream(be, stream); |
|
|
|
for_each_dpcm_fe(be, stream, dpcm) { |
|
if (dpcm->fe == fe) |
|
continue; |
|
|
|
dev_dbg(fe->dev, "reparent %s path %s %s %s\n", |
|
stream ? "capture" : "playback", |
|
dpcm->fe->dai_link->name, |
|
stream ? "<-" : "->", dpcm->be->dai_link->name); |
|
|
|
fe_substream = snd_soc_dpcm_get_substream(dpcm->fe, stream); |
|
be_substream->runtime = fe_substream->runtime; |
|
break; |
|
} |
|
} |
|
|
|
/* disconnect a BE and FE */ |
|
void dpcm_be_disconnect(struct snd_soc_pcm_runtime *fe, int stream) |
|
{ |
|
struct snd_soc_dpcm *dpcm, *d; |
|
unsigned long flags; |
|
|
|
for_each_dpcm_be_safe(fe, stream, dpcm, d) { |
|
dev_dbg(fe->dev, "ASoC: BE %s disconnect check for %s\n", |
|
stream ? "capture" : "playback", |
|
dpcm->be->dai_link->name); |
|
|
|
if (dpcm->state != SND_SOC_DPCM_LINK_STATE_FREE) |
|
continue; |
|
|
|
dev_dbg(fe->dev, "freed DSP %s path %s %s %s\n", |
|
stream ? "capture" : "playback", fe->dai_link->name, |
|
stream ? "<-" : "->", dpcm->be->dai_link->name); |
|
|
|
/* BEs still alive need new FE */ |
|
dpcm_be_reparent(fe, dpcm->be, stream); |
|
|
|
dpcm_remove_debugfs_state(dpcm); |
|
|
|
spin_lock_irqsave(&fe->card->dpcm_lock, flags); |
|
list_del(&dpcm->list_be); |
|
list_del(&dpcm->list_fe); |
|
spin_unlock_irqrestore(&fe->card->dpcm_lock, flags); |
|
kfree(dpcm); |
|
} |
|
} |
|
|
|
/* get BE for DAI widget and stream */ |
|
static struct snd_soc_pcm_runtime *dpcm_get_be(struct snd_soc_card *card, |
|
struct snd_soc_dapm_widget *widget, int stream) |
|
{ |
|
struct snd_soc_pcm_runtime *be; |
|
struct snd_soc_dapm_widget *w; |
|
struct snd_soc_dai *dai; |
|
int i; |
|
|
|
dev_dbg(card->dev, "ASoC: find BE for widget %s\n", widget->name); |
|
|
|
for_each_card_rtds(card, be) { |
|
|
|
if (!be->dai_link->no_pcm) |
|
continue; |
|
|
|
for_each_rtd_dais(be, i, dai) { |
|
w = snd_soc_dai_get_widget(dai, stream); |
|
|
|
dev_dbg(card->dev, "ASoC: try BE : %s\n", |
|
w ? w->name : "(not set)"); |
|
|
|
if (w == widget) |
|
return be; |
|
} |
|
} |
|
|
|
/* Widget provided is not a BE */ |
|
return NULL; |
|
} |
|
|
|
static int widget_in_list(struct snd_soc_dapm_widget_list *list, |
|
struct snd_soc_dapm_widget *widget) |
|
{ |
|
struct snd_soc_dapm_widget *w; |
|
int i; |
|
|
|
for_each_dapm_widgets(list, i, w) |
|
if (widget == w) |
|
return 1; |
|
|
|
return 0; |
|
} |
|
|
|
static bool dpcm_end_walk_at_be(struct snd_soc_dapm_widget *widget, |
|
enum snd_soc_dapm_direction dir) |
|
{ |
|
struct snd_soc_card *card = widget->dapm->card; |
|
struct snd_soc_pcm_runtime *rtd; |
|
int stream; |
|
|
|
/* adjust dir to stream */ |
|
if (dir == SND_SOC_DAPM_DIR_OUT) |
|
stream = SNDRV_PCM_STREAM_PLAYBACK; |
|
else |
|
stream = SNDRV_PCM_STREAM_CAPTURE; |
|
|
|
rtd = dpcm_get_be(card, widget, stream); |
|
if (rtd) |
|
return true; |
|
|
|
return false; |
|
} |
|
|
|
int dpcm_path_get(struct snd_soc_pcm_runtime *fe, |
|
int stream, struct snd_soc_dapm_widget_list **list) |
|
{ |
|
struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(fe, 0); |
|
int paths; |
|
|
|
if (fe->num_cpus > 1) { |
|
dev_err(fe->dev, |
|
"%s doesn't support Multi CPU yet\n", __func__); |
|
return -EINVAL; |
|
} |
|
|
|
/* get number of valid DAI paths and their widgets */ |
|
paths = snd_soc_dapm_dai_get_connected_widgets(cpu_dai, stream, list, |
|
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; |
|
|
|
/* 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; |
|
} |
|
|
|
/* don't connect if FE is not running */ |
|
if (!fe->dpcm[stream].runtime && !fe->fe_compr) |
|
continue; |
|
|
|
/* newly connected FE and BE */ |
|
err = dpcm_be_connect(fe, be, stream); |
|
if (err < 0) { |
|
dev_err(fe->dev, "ASoC: can't connect %s\n", |
|
widget->name); |
|
break; |
|
} else if (err == 0) /* already connected */ |
|
continue; |
|
|
|
/* new */ |
|
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; |
|
unsigned long flags; |
|
|
|
spin_lock_irqsave(&fe->card->dpcm_lock, flags); |
|
for_each_dpcm_be(fe, stream, dpcm) |
|
dpcm_set_be_update_state(dpcm->be, stream, SND_SOC_DPCM_UPDATE_NO); |
|
spin_unlock_irqrestore(&fe->card->dpcm_lock, flags); |
|
} |
|
|
|
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_substream); |
|
be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE; |
|
} |
|
} |
|
|
|
soc_pcm_close(be_substream); |
|
be_substream->runtime = NULL; |
|
be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; |
|
} |
|
} |
|
|
|
int dpcm_be_dai_startup(struct snd_soc_pcm_runtime *fe, int stream) |
|
{ |
|
struct snd_soc_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_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].state = SND_SOC_DPCM_STATE_OPEN; |
|
count++; |
|
} |
|
|
|
return count; |
|
|
|
unwind: |
|
dpcm_be_dai_startup_rollback(fe, stream, dpcm); |
|
|
|
dev_err(fe->dev, "ASoC: %s() failed at %s (%d)\n", |
|
__func__, be->dai_link->name, err); |
|
|
|
return 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->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: |
|
if (err < 0) |
|
dev_err(fe->dev, "ASoC: %s failed (%d)\n", __func__, err); |
|
|
|
return 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_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); |
|
|
|
if (ret < 0) |
|
dev_err(fe->dev, "%s() failed (%d)\n", __func__, ret); |
|
|
|
return 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; |
|
|
|
dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE); |
|
|
|
/* shutdown the BEs */ |
|
dpcm_be_dai_shutdown(fe, stream); |
|
|
|
dev_dbg(fe->dev, "ASoC: close FE %s\n", fe->dai_link->name); |
|
|
|
/* now shutdown the frontend */ |
|
soc_pcm_close(substream); |
|
|
|
/* run the stream 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_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; |
|
|
|
mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); |
|
dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE); |
|
|
|
dev_dbg(fe->dev, "ASoC: hw_free FE %s\n", fe->dai_link->name); |
|
|
|
/* call hw_free on the frontend */ |
|
soc_pcm_hw_free(substream); |
|
|
|
/* 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); |
|
|
|
mutex_unlock(&fe->card->mutex); |
|
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) { |
|
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(&dpcm->hw_params, &fe->dpcm[stream].hw_params, |
|
sizeof(struct snd_pcm_hw_params)); |
|
|
|
/* perform any hw_params fixups */ |
|
ret = snd_soc_link_be_hw_params_fixup(be, &dpcm->hw_params); |
|
if (ret < 0) |
|
goto unwind; |
|
|
|
/* copy the fixed-up hw params for BE dai */ |
|
memcpy(&be->dpcm[stream].hw_params, &dpcm->hw_params, |
|
sizeof(struct snd_pcm_hw_params)); |
|
|
|
/* only allow hw_params() if no connected FEs are running */ |
|
if (!snd_soc_dpcm_can_be_params(fe, be, stream)) |
|
continue; |
|
|
|
if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) && |
|
(be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && |
|
(be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE)) |
|
continue; |
|
|
|
dev_dbg(be->dev, "ASoC: hw_params BE %s\n", |
|
be->dai_link->name); |
|
|
|
ret = soc_pcm_hw_params(be_substream, &dpcm->hw_params); |
|
if (ret < 0) |
|
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_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; |
|
|
|
mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); |
|
dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE); |
|
|
|
memcpy(&fe->dpcm[stream].hw_params, params, |
|
sizeof(struct snd_pcm_hw_params)); |
|
ret = dpcm_be_dai_hw_params(fe, stream); |
|
if (ret < 0) |
|
goto out; |
|
|
|
dev_dbg(fe->dev, "ASoC: hw_params FE %s rate %d chan %x fmt %d\n", |
|
fe->dai_link->name, params_rate(params), |
|
params_channels(params), params_format(params)); |
|
|
|
/* call hw_params on the frontend */ |
|
ret = soc_pcm_hw_params(substream, params); |
|
if (ret < 0) |
|
dpcm_be_dai_hw_free(fe, stream); |
|
else |
|
fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS; |
|
|
|
out: |
|
dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO); |
|
mutex_unlock(&fe->card->mutex); |
|
|
|
if (ret < 0) |
|
dev_err(fe->dev, "ASoC: %s failed (%d)\n", __func__, ret); |
|
|
|
return ret; |
|
} |
|
|
|
int dpcm_be_dai_trigger(struct snd_soc_pcm_runtime *fe, int stream, |
|
int cmd) |
|
{ |
|
struct snd_soc_pcm_runtime *be; |
|
struct snd_soc_dpcm *dpcm; |
|
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); |
|
|
|
/* is this op for this BE ? */ |
|
if (!snd_soc_dpcm_be_can_update(fe, be, stream)) |
|
continue; |
|
|
|
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].state != SND_SOC_DPCM_STATE_PREPARE) && |
|
(be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP) && |
|
(be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED)) |
|
continue; |
|
|
|
ret = soc_pcm_trigger(be_substream, cmd); |
|
if (ret) |
|
goto end; |
|
|
|
be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; |
|
break; |
|
case SNDRV_PCM_TRIGGER_RESUME: |
|
if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND)) |
|
continue; |
|
|
|
ret = soc_pcm_trigger(be_substream, cmd); |
|
if (ret) |
|
goto end; |
|
|
|
be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; |
|
break; |
|
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
|
if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED)) |
|
continue; |
|
|
|
ret = soc_pcm_trigger(be_substream, cmd); |
|
if (ret) |
|
goto end; |
|
|
|
be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; |
|
break; |
|
case SNDRV_PCM_TRIGGER_STOP: |
|
if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) && |
|
(be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED)) |
|
continue; |
|
|
|
if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) |
|
continue; |
|
|
|
ret = soc_pcm_trigger(be_substream, cmd); |
|
if (ret) |
|
goto end; |
|
|
|
be->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP; |
|
break; |
|
case SNDRV_PCM_TRIGGER_SUSPEND: |
|
if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) |
|
continue; |
|
|
|
if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) |
|
continue; |
|
|
|
ret = soc_pcm_trigger(be_substream, cmd); |
|
if (ret) |
|
goto end; |
|
|
|
be->dpcm[stream].state = SND_SOC_DPCM_STATE_SUSPEND; |
|
break; |
|
case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
|
if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) |
|
continue; |
|
|
|
if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) |
|
continue; |
|
|
|
ret = soc_pcm_trigger(be_substream, cmd); |
|
if (ret) |
|
goto end; |
|
|
|
be->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED; |
|
break; |
|
} |
|
} |
|
end: |
|
if (ret < 0) |
|
dev_err(fe->dev, "ASoC: %s() failed at %s (%d)\n", |
|
__func__, be->dai_link->name, ret); |
|
return ret; |
|
} |
|
EXPORT_SYMBOL_GPL(dpcm_be_dai_trigger); |
|
|
|
static int dpcm_dai_trigger_fe_be(struct snd_pcm_substream *substream, |
|
int cmd, bool fe_first) |
|
{ |
|
struct snd_soc_pcm_runtime *fe = 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_substream); |
|
if (ret < 0) |
|
break; |
|
|
|
be->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE; |
|
} |
|
|
|
if (ret < 0) |
|
dev_err(fe->dev, "ASoC: %s() failed (%d)\n", __func__, ret); |
|
|
|
return 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; |
|
|
|
mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); |
|
|
|
dev_dbg(fe->dev, "ASoC: prepare FE %s\n", fe->dai_link->name); |
|
|
|
dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE); |
|
|
|
/* there is no point preparing this FE if there are no BEs */ |
|
if (list_empty(&fe->dpcm[stream].be_clients)) { |
|
dev_err(fe->dev, "ASoC: no backend DAIs enabled for %s\n", |
|
fe->dai_link->name); |
|
ret = -EINVAL; |
|
goto out; |
|
} |
|
|
|
ret = dpcm_be_dai_prepare(fe, stream); |
|
if (ret < 0) |
|
goto out; |
|
|
|
/* call prepare on the frontend */ |
|
ret = soc_pcm_prepare(substream); |
|
if (ret < 0) |
|
goto out; |
|
|
|
fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE; |
|
|
|
out: |
|
dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO); |
|
mutex_unlock(&fe->card->mutex); |
|
|
|
if (ret < 0) |
|
dev_err(fe->dev, "ASoC: %s() failed (%d)\n", __func__, ret); |
|
|
|
return ret; |
|
} |
|
|
|
static int dpcm_run_update_shutdown(struct snd_soc_pcm_runtime *fe, int stream) |
|
{ |
|
struct snd_pcm_substream *substream = |
|
snd_soc_dpcm_get_substream(fe, stream); |
|
enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream]; |
|
int err; |
|
|
|
dev_dbg(fe->dev, "ASoC: runtime %s close on FE %s\n", |
|
stream ? "capture" : "playback", fe->dai_link->name); |
|
|
|
if (trigger == SND_SOC_DPCM_TRIGGER_BESPOKE) { |
|
/* call bespoke trigger - FE takes care of all BE triggers */ |
|
dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd stop\n", |
|
fe->dai_link->name); |
|
|
|
err = snd_soc_pcm_dai_bespoke_trigger(substream, SNDRV_PCM_TRIGGER_STOP); |
|
} 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); |
|
|
|
if (err < 0) |
|
dev_err(fe->dev, "ASoC: %s() failed (%d)\n", __func__, err); |
|
|
|
return 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; |
|
unsigned long flags; |
|
|
|
dev_dbg(fe->dev, "ASoC: runtime %s open on FE %s\n", |
|
stream ? "capture" : "playback", fe->dai_link->name); |
|
|
|
/* Only start the BE if the FE is ready */ |
|
if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_HW_FREE || |
|
fe->dpcm[stream].state == SND_SOC_DPCM_STATE_CLOSE) { |
|
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 */ |
|
spin_lock_irqsave(&fe->card->dpcm_lock, flags); |
|
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; |
|
} |
|
spin_unlock_irqrestore(&fe->card->dpcm_lock, flags); |
|
|
|
if (ret < 0) |
|
dev_err(fe->dev, "ASoC: %s() failed (%d)\n", __func__, ret); |
|
|
|
return ret; |
|
} |
|
|
|
static int soc_dpcm_fe_runtime_update(struct snd_soc_pcm_runtime *fe, int new) |
|
{ |
|
struct snd_soc_dapm_widget_list *list; |
|
int stream; |
|
int count, paths; |
|
|
|
if (!fe->dai_link->dynamic) |
|
return 0; |
|
|
|
if (fe->num_cpus > 1) { |
|
dev_err(fe->dev, |
|
"%s doesn't support Multi CPU yet\n", __func__); |
|
return -EINVAL; |
|
} |
|
|
|
/* only check active links */ |
|
if (!snd_soc_dai_active(asoc_rtd_to_cpu(fe, 0))) |
|
return 0; |
|
|
|
/* DAPM sync will call this to update DSP paths */ |
|
dev_dbg(fe->dev, "ASoC: DPCM %s runtime update for FE %s\n", |
|
new ? "new" : "old", fe->dai_link->name); |
|
|
|
for_each_pcm_streams(stream) { |
|
|
|
/* skip if FE doesn't have playback/capture capability */ |
|
if (!snd_soc_dai_stream_valid(asoc_rtd_to_cpu(fe, 0), stream) || |
|
!snd_soc_dai_stream_valid(asoc_rtd_to_codec(fe, 0), stream)) |
|
continue; |
|
|
|
/* skip if FE isn't currently playing/capturing */ |
|
if (!snd_soc_dai_stream_active(asoc_rtd_to_cpu(fe, 0), stream) || |
|
!snd_soc_dai_stream_active(asoc_rtd_to_codec(fe, 0), stream)) |
|
continue; |
|
|
|
paths = dpcm_path_get(fe, stream, &list); |
|
if (paths < 0) |
|
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->mutex, SND_SOC_CARD_CLASS_RUNTIME); |
|
/* shutdown all old paths first */ |
|
for_each_card_rtds(card, fe) { |
|
ret = soc_dpcm_fe_runtime_update(fe, 0); |
|
if (ret) |
|
goto out; |
|
} |
|
|
|
/* bring new paths up */ |
|
for_each_card_rtds(card, fe) { |
|
ret = soc_dpcm_fe_runtime_update(fe, 1); |
|
if (ret) |
|
goto out; |
|
} |
|
|
|
out: |
|
mutex_unlock(&card->mutex); |
|
return ret; |
|
} |
|
EXPORT_SYMBOL_GPL(snd_soc_dpcm_runtime_update); |
|
|
|
static void dpcm_fe_dai_cleanup(struct snd_pcm_substream *fe_substream) |
|
{ |
|
struct snd_soc_pcm_runtime *fe = asoc_substream_to_rtd(fe_substream); |
|
struct snd_soc_dpcm *dpcm; |
|
int stream = fe_substream->stream; |
|
|
|
/* mark FE's links ready to prune */ |
|
for_each_dpcm_be(fe, stream, dpcm) |
|
dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; |
|
|
|
dpcm_be_disconnect(fe, stream); |
|
|
|
fe->dpcm[stream].runtime = NULL; |
|
} |
|
|
|
static int dpcm_fe_dai_close(struct snd_pcm_substream *fe_substream) |
|
{ |
|
struct snd_soc_pcm_runtime *fe = asoc_substream_to_rtd(fe_substream); |
|
int ret; |
|
|
|
mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); |
|
ret = dpcm_fe_dai_shutdown(fe_substream); |
|
|
|
dpcm_fe_dai_cleanup(fe_substream); |
|
|
|
mutex_unlock(&fe->card->mutex); |
|
return ret; |
|
} |
|
|
|
static int dpcm_fe_dai_open(struct snd_pcm_substream *fe_substream) |
|
{ |
|
struct snd_soc_pcm_runtime *fe = asoc_substream_to_rtd(fe_substream); |
|
struct snd_soc_dapm_widget_list *list; |
|
int ret; |
|
int stream = fe_substream->stream; |
|
|
|
mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); |
|
fe->dpcm[stream].runtime = fe_substream->runtime; |
|
|
|
ret = dpcm_path_get(fe, stream, &list); |
|
if (ret < 0) |
|
goto open_end; |
|
|
|
/* calculate valid and active FE <-> BE dpcms */ |
|
dpcm_process_paths(fe, stream, &list, 1); |
|
|
|
ret = dpcm_fe_dai_startup(fe_substream); |
|
if (ret < 0) |
|
dpcm_fe_dai_cleanup(fe_substream); |
|
|
|
dpcm_clear_pending_state(fe, stream); |
|
dpcm_path_put(&list); |
|
open_end: |
|
mutex_unlock(&fe->card->mutex); |
|
return ret; |
|
} |
|
|
|
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->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->num_cpus == 1) { |
|
cpu_dai = asoc_rtd_to_cpu(rtd, 0); |
|
} else if (rtd->num_cpus == rtd->num_codecs) { |
|
cpu_dai = asoc_rtd_to_cpu(rtd, i); |
|
} else { |
|
dev_err(rtd->card->dev, |
|
"N cpus to M codecs link is not supported yet\n"); |
|
return -EINVAL; |
|
} |
|
|
|
if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_PLAYBACK) && |
|
snd_soc_dai_stream_valid(cpu_dai, cpu_playback)) |
|
*playback = 1; |
|
if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_CAPTURE) && |
|
snd_soc_dai_stream_valid(cpu_dai, cpu_capture)) |
|
*capture = 1; |
|
} |
|
} |
|
|
|
if (rtd->dai_link->playback_only) { |
|
*playback = 1; |
|
*capture = 0; |
|
} |
|
|
|
if (rtd->dai_link->capture_only) { |
|
*playback = 0; |
|
*capture = 1; |
|
} |
|
|
|
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 */ |
|
if (rtd->dai_link->params) |
|
rtd->close_delayed_work_func = codec2codec_close_delayed_work; |
|
else |
|
rtd->close_delayed_work_func = snd_soc_close_delayed_work; |
|
|
|
rtd->pcm = pcm; |
|
pcm->nonatomic = rtd->dai_link->nonatomic; |
|
pcm->private_data = rtd; |
|
|
|
if (rtd->dai_link->no_pcm || rtd->dai_link->params) { |
|
if (playback) |
|
pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->private_data = rtd; |
|
if (capture) |
|
pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream->private_data = rtd; |
|
goto out; |
|
} |
|
|
|
/* ASoC PCM operations */ |
|
if (rtd->dai_link->dynamic) { |
|
rtd->ops.open = dpcm_fe_dai_open; |
|
rtd->ops.hw_params = dpcm_fe_dai_hw_params; |
|
rtd->ops.prepare = dpcm_fe_dai_prepare; |
|
rtd->ops.trigger = dpcm_fe_dai_trigger; |
|
rtd->ops.hw_free = dpcm_fe_dai_hw_free; |
|
rtd->ops.close = dpcm_fe_dai_close; |
|
rtd->ops.pointer = soc_pcm_pointer; |
|
} else { |
|
rtd->ops.open = soc_pcm_open; |
|
rtd->ops.hw_params = soc_pcm_hw_params; |
|
rtd->ops.prepare = soc_pcm_prepare; |
|
rtd->ops.trigger = soc_pcm_trigger; |
|
rtd->ops.hw_free = soc_pcm_hw_free; |
|
rtd->ops.close = soc_pcm_close; |
|
rtd->ops.pointer = soc_pcm_pointer; |
|
} |
|
|
|
for_each_rtd_components(rtd, i, component) { |
|
const struct snd_soc_component_driver *drv = component->driver; |
|
|
|
if (drv->ioctl) |
|
rtd->ops.ioctl = snd_soc_pcm_component_ioctl; |
|
if (drv->sync_stop) |
|
rtd->ops.sync_stop = snd_soc_pcm_component_sync_stop; |
|
if (drv->copy_user) |
|
rtd->ops.copy_user = snd_soc_pcm_component_copy_user; |
|
if (drv->page) |
|
rtd->ops.page = snd_soc_pcm_component_page; |
|
if (drv->mmap) |
|
rtd->ops.mmap = snd_soc_pcm_component_mmap; |
|
if (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; |
|
|
|
pcm->no_device_suspend = true; |
|
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; |
|
unsigned long flags; |
|
int i; |
|
|
|
spin_lock_irqsave(&fe->card->dpcm_lock, flags); |
|
for_each_dpcm_fe(be, stream, dpcm) { |
|
|
|
if (dpcm->fe == fe) |
|
continue; |
|
|
|
state = dpcm->fe->dpcm[stream].state; |
|
for (i = 0; i < num_states; i++) { |
|
if (state == states[i]) { |
|
ret = 0; |
|
break; |
|
} |
|
} |
|
} |
|
spin_unlock_irqrestore(&fe->card->dpcm_lock, flags); |
|
|
|
/* it's safe to do this BE DAI */ |
|
return ret; |
|
} |
|
|
|
/* |
|
* We can only hw_free, stop, pause or suspend a BE DAI if any of it's FE |
|
* are not running, paused or suspended for the specified stream direction. |
|
*/ |
|
int snd_soc_dpcm_can_be_free_stop(struct snd_soc_pcm_runtime *fe, |
|
struct snd_soc_pcm_runtime *be, int stream) |
|
{ |
|
const enum snd_soc_dpcm_state state[] = { |
|
SND_SOC_DPCM_STATE_START, |
|
SND_SOC_DPCM_STATE_PAUSED, |
|
SND_SOC_DPCM_STATE_SUSPEND, |
|
}; |
|
|
|
return snd_soc_dpcm_check_state(fe, be, stream, state, ARRAY_SIZE(state)); |
|
} |
|
EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_free_stop); |
|
|
|
/* |
|
* We can only change hw params a BE DAI if any of it's FE are not prepared, |
|
* running, paused or suspended for the specified stream direction. |
|
*/ |
|
int snd_soc_dpcm_can_be_params(struct snd_soc_pcm_runtime *fe, |
|
struct snd_soc_pcm_runtime *be, int stream) |
|
{ |
|
const enum snd_soc_dpcm_state state[] = { |
|
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);
|
|
|