I had the same problem with a ReSpeaker 2-Mics Pi HAT that I’ve been unable to use anymore after a system update. I googled the name of the function raising errors in the log file and found this commit ASoC: simple-card-utils: remove asoc_simple_parse_xxx() · torvalds/linux@e25704f · GitHub. For what I’ve understood the driver has not been updated to match the changes in asoc_simple_parse_xxx(). I tried to modify it by myself and it seems to work on my platform (Raspberry Pi - Linux 5.15.32-v8+ aarch64).
I paste below seed-voicecard.c as modified.
/*
* SEEED voice card
*
* (C) Copyright 2017-2018
* Seeed Technology Co., Ltd. <www.seeedstudio.com>
*
* base on ASoC simple sound card support
*
* Copyright (C) 2012 Renesas Solutions Corp.
* Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
/* #undef DEBUG */
#include <linux/version.h>
#include <linux/clk.h>
#include <linux/device.h>
#include <linux/gpio.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_gpio.h>
#include <linux/platform_device.h>
#include <linux/string.h>
#include <sound/soc.h>
#include <sound/soc-dai.h>
#include <sound/simple_card_utils.h>
#include "ac10x.h"
#define LINUX_VERSION_IS_GEQ(x1,x2,x3) (LINUX_VERSION_CODE >= KERNEL_VERSION(x1,x2,x3))
/*
* single codec:
* 0 - allow multi codec
* 1 - yes
*/
#define _SINGLE_CODEC 1
struct seeed_card_data {
struct snd_soc_card snd_card;
struct seeed_dai_props {
struct asoc_simple_dai cpu_dai;
struct asoc_simple_dai codec_dai;
struct snd_soc_dai_link_component cpus; /* single cpu */
struct snd_soc_dai_link_component codecs; /* single codec */
struct snd_soc_dai_link_component platforms;
unsigned int mclk_fs;
} *dai_props;
unsigned int mclk_fs;
unsigned channels_playback_default;
unsigned channels_playback_override;
unsigned channels_capture_default;
unsigned channels_capture_override;
struct snd_soc_dai_link *dai_link;
#if CONFIG_AC10X_TRIG_LOCK
spinlock_t lock;
#endif
struct work_struct work_codec_clk;
#define TRY_STOP_MAX 3
int try_stop;
};
struct seeed_card_info {
const char *name;
const char *card;
const char *codec;
const char *platform;
unsigned int daifmt;
struct asoc_simple_dai cpu_dai;
struct asoc_simple_dai codec_dai;
};
#define seeed_priv_to_card(priv) (&(priv)->snd_card)
#define seeed_priv_to_dev(priv) ((priv)->snd_card.dev)
#define seeed_priv_to_link(priv, i) ((priv)->snd_card.dai_link + (i))
#define seeed_priv_to_props(priv, i) ((priv)->dai_props + (i))
#define DAI "sound-dai"
#define CELL "#sound-dai-cells"
#define PREFIX "seeed-voice-card,"
static int seeed_voice_card_startup(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct seeed_card_data *priv = snd_soc_card_get_drvdata(rtd->card);
struct seeed_dai_props *dai_props =
seeed_priv_to_props(priv, rtd->num);
int ret;
ret = clk_prepare_enable(dai_props->cpu_dai.clk);
if (ret)
return ret;
ret = clk_prepare_enable(dai_props->codec_dai.clk);
if (ret)
clk_disable_unprepare(dai_props->cpu_dai.clk);
if (asoc_rtd_to_cpu(rtd, 0)->driver->playback.channels_min) {
priv->channels_playback_default = asoc_rtd_to_cpu(rtd, 0)->driver->playback.channels_min;
}
if (asoc_rtd_to_cpu(rtd, 0)->driver->capture.channels_min) {
priv->channels_capture_default = asoc_rtd_to_cpu(rtd, 0)->driver->capture.channels_min;
}
asoc_rtd_to_cpu(rtd, 0)->driver->playback.channels_min = priv->channels_playback_override;
asoc_rtd_to_cpu(rtd, 0)->driver->playback.channels_max = priv->channels_playback_override;
asoc_rtd_to_cpu(rtd, 0)->driver->capture.channels_min = priv->channels_capture_override;
asoc_rtd_to_cpu(rtd, 0)->driver->capture.channels_max = priv->channels_capture_override;
return ret;
}
static void seeed_voice_card_shutdown(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct seeed_card_data *priv = snd_soc_card_get_drvdata(rtd->card);
struct seeed_dai_props *dai_props =
seeed_priv_to_props(priv, rtd->num);
asoc_rtd_to_cpu(rtd, 0)->driver->playback.channels_min = priv->channels_playback_default;
asoc_rtd_to_cpu(rtd, 0)->driver->playback.channels_max = priv->channels_playback_default;
asoc_rtd_to_cpu(rtd, 0)->driver->capture.channels_min = priv->channels_capture_default;
asoc_rtd_to_cpu(rtd, 0)->driver->capture.channels_max = priv->channels_capture_default;
clk_disable_unprepare(dai_props->cpu_dai.clk);
clk_disable_unprepare(dai_props->codec_dai.clk);
}
static int seeed_voice_card_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
struct seeed_card_data *priv = snd_soc_card_get_drvdata(rtd->card);
struct seeed_dai_props *dai_props =
seeed_priv_to_props(priv, rtd->num);
unsigned int mclk, mclk_fs = 0;
int ret = 0;
if (priv->mclk_fs)
mclk_fs = priv->mclk_fs;
else if (dai_props->mclk_fs)
mclk_fs = dai_props->mclk_fs;
if (mclk_fs) {
mclk = params_rate(params) * mclk_fs;
ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
SND_SOC_CLOCK_IN);
if (ret && ret != -ENOTSUPP)
goto err;
ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk,
SND_SOC_CLOCK_OUT);
if (ret && ret != -ENOTSUPP)
goto err;
}
return 0;
err:
return ret;
}
#define _SET_CLOCK_CNT 2
static int (* _set_clock[_SET_CLOCK_CNT])(int y_start_n_stop, struct snd_pcm_substream *substream, int cmd, struct snd_soc_dai *dai);
int seeed_voice_card_register_set_clock(int stream, int (*set_clock)(int, struct snd_pcm_substream *, int, struct snd_soc_dai *)) {
if (! _set_clock[stream]) {
_set_clock[stream] = set_clock;
}
return 0;
}
EXPORT_SYMBOL(seeed_voice_card_register_set_clock);
/*
* work_cb_codec_clk: clear audio codec inner clock.
*/
static void work_cb_codec_clk(struct work_struct *work)
{
struct seeed_card_data *priv = container_of(work, struct seeed_card_data, work_codec_clk);
int r = 0;
if (_set_clock[SNDRV_PCM_STREAM_CAPTURE]) {
r = r || _set_clock[SNDRV_PCM_STREAM_CAPTURE](0, NULL, 0, NULL); /* not using 2nd to 4th arg if 1st == 0 */
}
if (_set_clock[SNDRV_PCM_STREAM_PLAYBACK]) {
r = r || _set_clock[SNDRV_PCM_STREAM_PLAYBACK](0, NULL, 0, NULL); /* not using 2nd to 4th arg if 1st == 0 */
}
if (r && priv->try_stop++ < TRY_STOP_MAX) {
if (0 != schedule_work(&priv->work_codec_clk)) {}
}
return;
}
static int seeed_voice_card_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *dai = asoc_rtd_to_codec(rtd, 0);
struct seeed_card_data *priv = snd_soc_card_get_drvdata(rtd->card);
#if CONFIG_AC10X_TRIG_LOCK
unsigned long flags;
#endif
int ret = 0;
dev_dbg(rtd->card->dev, "%s() stream=%s cmd=%d play:%d, capt:%d\n",
__FUNCTION__, snd_pcm_stream_str(substream), cmd,
dai->stream_active[SNDRV_PCM_STREAM_PLAYBACK], dai->stream_active[SNDRV_PCM_STREAM_CAPTURE]);
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
if (cancel_work_sync(&priv->work_codec_clk) != 0) {}
#if CONFIG_AC10X_TRIG_LOCK
/* I know it will degrades performance, but I have no choice */
spin_lock_irqsave(&priv->lock, flags);
#endif
if (_set_clock[SNDRV_PCM_STREAM_CAPTURE]) _set_clock[SNDRV_PCM_STREAM_CAPTURE](1, substream, cmd, dai);
if (_set_clock[SNDRV_PCM_STREAM_PLAYBACK]) _set_clock[SNDRV_PCM_STREAM_PLAYBACK](1, substream, cmd, dai);
#if CONFIG_AC10X_TRIG_LOCK
spin_unlock_irqrestore(&priv->lock, flags);
#endif
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
/* capture channel resync, if overrun */
if (dai->stream_active[SNDRV_PCM_STREAM_CAPTURE] && substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
break;
}
/* interrupt environment */
if (in_irq() || in_nmi() || in_serving_softirq()) {
priv->try_stop = 0;
if (0 != schedule_work(&priv->work_codec_clk)) {
}
} else {
if (_set_clock[SNDRV_PCM_STREAM_CAPTURE]) _set_clock[SNDRV_PCM_STREAM_CAPTURE](0, NULL, 0, NULL); /* not using 2nd to 4th arg if 1st == 0 */
if (_set_clock[SNDRV_PCM_STREAM_PLAYBACK]) _set_clock[SNDRV_PCM_STREAM_PLAYBACK](0, NULL, 0, NULL); /* not using 2nd to 4th arg if 1st == 0 */
}
break;
default:
ret = -EINVAL;
}
dev_dbg(rtd->card->dev, "%s() stream=%s cmd=%d play:%d, capt:%d;finished %d\n",
__FUNCTION__, snd_pcm_stream_str(substream), cmd,
dai->stream_active[SNDRV_PCM_STREAM_PLAYBACK], dai->stream_active[SNDRV_PCM_STREAM_CAPTURE], ret);
return ret;
}
static struct snd_soc_ops seeed_voice_card_ops = {
.startup = seeed_voice_card_startup,
.shutdown = seeed_voice_card_shutdown,
.hw_params = seeed_voice_card_hw_params,
.trigger = seeed_voice_card_trigger,
};
static int asoc_simple_parse_dai(struct device_node *node,
struct snd_soc_dai_link_component *dlc,
int *is_single_link)
{
struct of_phandle_args args;
int ret;
if (!node)
return 0;
/*
* Get node via "sound-dai = <&phandle port>"
* it will be used as xxx_of_node on soc_bind_dai_link()
*/
ret = of_parse_phandle_with_args(node, DAI, CELL, 0, &args);
if (ret)
return ret;
/*
* FIXME
*
* Here, dlc->dai_name is pointer to CPU/Codec DAI name.
* If user unbinded CPU or Codec driver, but not for Sound Card,
* dlc->dai_name is keeping unbinded CPU or Codec
* driver's pointer.
*
* If user re-bind CPU or Codec driver again, ALSA SoC will try
* to rebind Card via snd_soc_try_rebind_card(), but because of
* above reason, it might can't bind Sound Card.
* Because Sound Card is pointing to released dai_name pointer.
*
* To avoid this rebind Card issue,
* 1) It needs to alloc memory to keep dai_name eventhough
* CPU or Codec driver was unbinded, or
* 2) user need to rebind Sound Card everytime
* if he unbinded CPU or Codec.
*/
ret = snd_soc_of_get_dai_name(node, &dlc->dai_name);
if (ret < 0)
return ret;
dlc->of_node = args.np;
if (is_single_link)
*is_single_link = !args.args_count;
return 0;
}
static int asoc_simple_init_dai(struct snd_soc_dai *dai,
struct asoc_simple_dai *simple_dai)
{
int ret;
if (!simple_dai)
return 0;
if (simple_dai->sysclk) {
ret = snd_soc_dai_set_sysclk(dai, 0, simple_dai->sysclk,
simple_dai->clk_direction);
if (ret && ret != -ENOTSUPP) {
dev_err(dai->dev, "simple-card: set_sysclk error\n");
return ret;
}
}
if (simple_dai->slots) {
ret = snd_soc_dai_set_bclk_ratio(dai,
simple_dai->slots *
simple_dai->slot_width);
if (ret && ret != -ENOTSUPP) {
dev_err(dai->dev, "simple-card: set_tdm_slot error\n");
return ret;
}
}
return 0;
}
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5,7,0)
static int asoc_simple_init_dai_link_params(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_dai_link *dai_link = rtd->dai_link;
struct snd_soc_component *component;
struct snd_soc_pcm_stream *params;
struct snd_pcm_hardware hw;
int i, ret, stream;
/* Only codecs should have non_legacy_dai_naming set. */
for_each_rtd_components(rtd, i, component) {
if (!component->driver->non_legacy_dai_naming)
return 0;
}
/* Assumes the capabilities are the same for all supported streams */
for (stream = 0; stream < 2; stream++) {
ret = snd_soc_runtime_calc_hw(rtd, &hw, stream);
if (ret == 0)
break;
}
if (ret < 0) {
dev_err(rtd->dev, "simple-card: no valid dai_link params\n");
return ret;
}
params = devm_kzalloc(rtd->dev, sizeof(*params), GFP_KERNEL);
if (!params)
return -ENOMEM;
params->formats = hw.formats;
params->rates = hw.rates;
params->rate_min = hw.rate_min;
params->rate_max = hw.rate_max;
params->channels_min = hw.channels_min;
params->channels_max = hw.channels_max;
dai_link->params = params;
dai_link->num_params = 1;
return 0;
}
#endif
static int seeed_voice_card_dai_init(struct snd_soc_pcm_runtime *rtd)
{
struct seeed_card_data *priv = snd_soc_card_get_drvdata(rtd->card);
struct snd_soc_dai *codec = asoc_rtd_to_codec(rtd, 0);
struct snd_soc_dai *cpu = asoc_rtd_to_cpu(rtd, 0);
struct seeed_dai_props *dai_props =
seeed_priv_to_props(priv, rtd->num);
int ret;
ret = asoc_simple_init_dai(codec, &dai_props->codec_dai);
if (ret < 0)
return ret;
ret = asoc_simple_init_dai(cpu, &dai_props->cpu_dai);
if (ret < 0)
return ret;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5,7,0)
ret = asoc_simple_init_dai_link_params(rtd);
if (ret < 0)
return ret;
#endif
dev_dbg(rtd->card->dev, "codec \"%s\" mapping to cpu \"%s\"\n", codec->name, cpu->name);
return 0;
}
static int seeed_voice_card_dai_link_of(struct device_node *node,
struct seeed_card_data *priv,
int idx,
bool is_top_level_node)
{
struct device *dev = seeed_priv_to_dev(priv);
struct snd_soc_dai_link *dai_link = seeed_priv_to_link(priv, idx);
struct seeed_dai_props *dai_props = seeed_priv_to_props(priv, idx);
struct asoc_simple_dai *cpu_dai = &dai_props->cpu_dai;
struct asoc_simple_dai *codec_dai = &dai_props->codec_dai;
struct device_node *cpu = NULL;
struct device_node *plat = NULL;
struct device_node *codec = NULL;
char prop[128];
char *prefix = "";
int ret, single_cpu;
/* For single DAI link & old style of DT node */
if (is_top_level_node)
prefix = PREFIX;
snprintf(prop, sizeof(prop), "%scpu", prefix);
cpu = of_get_child_by_name(node, prop);
if (!cpu) {
ret = -EINVAL;
dev_err(dev, "%s: Can't find %s DT node\n", __func__, prop);
goto dai_link_of_err;
}
snprintf(prop, sizeof(prop), "%splat", prefix);
plat = of_get_child_by_name(node, prop);
snprintf(prop, sizeof(prop), "%scodec", prefix);
codec = of_get_child_by_name(node, prop);
if (!codec) {
ret = -EINVAL;
dev_err(dev, "%s: Can't find %s DT node\n", __func__, prop);
goto dai_link_of_err;
}
ret = asoc_simple_parse_daifmt(dev, node, codec,
prefix, &dai_link->dai_fmt);
if (ret < 0)
goto dai_link_of_err;
of_property_read_u32(node, "mclk-fs", &dai_props->mclk_fs);
//ret = asoc_simple_parse_cpu(cpu, dai_link, &single_cpu);
//marco.gonnelli commented the line above and wrote the line below
ret = asoc_simple_parse_dai(cpu,dai_link->cpus,&single_cpu);
if (ret < 0)
goto dai_link_of_err;
#if _SINGLE_CODEC
//ret = asoc_simple_parse_codec(codec, dai_link);
//marco.gonnelli commented the line above and wrote the line below
ret = asoc_simple_parse_dai(codec, dai_link->codecs,NULL);
if (ret < 0)
goto dai_link_of_err;
#else
ret = snd_soc_of_get_dai_link_codecs(dev, codec, dai_link);
if (ret < 0) {
dev_err(dev, "parse codec info error %d\n", ret);
goto dai_link_of_err;
}
dev_dbg(dev, "dai_link num_codecs = %d\n", dai_link->num_codecs);
#endif
//ret = asoc_simple_parse_platform(plat, dai_link);
//marco.gonnelli commented the line above and wrote the line below
ret = asoc_simple_parse_dai(plat, dai_link->platforms,NULL);
if (ret < 0)
goto dai_link_of_err;
ret = snd_soc_of_parse_tdm_slot(cpu, &cpu_dai->tx_slot_mask,
&cpu_dai->rx_slot_mask,
&cpu_dai->slots,
&cpu_dai->slot_width);
dev_dbg(dev, "cpu_dai : slot,width,tx,rx = %d,%d,%d,%d\n",
cpu_dai->slots, cpu_dai->slot_width,
cpu_dai->tx_slot_mask, cpu_dai->rx_slot_mask
);
if (ret < 0)
goto dai_link_of_err;
ret = snd_soc_of_parse_tdm_slot(codec, &codec_dai->tx_slot_mask,
&codec_dai->rx_slot_mask,
&codec_dai->slots,
&codec_dai->slot_width);
if (ret < 0)
goto dai_link_of_err;
#if LINUX_VERSION_CODE <= KERNEL_VERSION(4,10,0)
ret = asoc_simple_card_parse_clk_cpu(cpu, dai_link, cpu_dai);
#else
//ret = asoc_simple_parse_clk_cpu(dev, cpu, dai_link, cpu_dai);
//marco.gonnelli commented the line above and wrote the line below
ret = asoc_simple_parse_clk(dev, cpu, cpu_dai, dai_link->cpus);
#endif
if (ret < 0)
goto dai_link_of_err;
#if LINUX_VERSION_CODE <= KERNEL_VERSION(4,10,0)
ret = asoc_simple_card_parse_clk_codec(codec, dai_link, codec_dai);
#else
//ret = asoc_simple_parse_clk_codec(dev, codec, dai_link, codec_dai);
//marco.gonnelli commented the line above and wrote the line below
ret = asoc_simple_parse_clk(dev, codec, codec_dai, dai_link->codecs);
#endif
if (ret < 0)
goto dai_link_of_err;
ret = asoc_simple_set_dailink_name(dev, dai_link,
"%s-%s",
dai_link->cpus->dai_name,
#if _SINGLE_CODEC
dai_link->codecs->dai_name
#else
dai_link->codecs[0].dai_name
#endif
);
if (ret < 0)
goto dai_link_of_err;
dai_link->ops = &seeed_voice_card_ops;
dai_link->init = seeed_voice_card_dai_init;
dev_dbg(dev, "\tname : %s\n", dai_link->stream_name);
dev_dbg(dev, "\tformat : %04x\n", dai_link->dai_fmt);
dev_dbg(dev, "\tcpu : %s / %d\n",
dai_link->cpus->dai_name,
dai_props->cpu_dai.sysclk);
dev_dbg(dev, "\tcodec : %s / %d\n",
#if _SINGLE_CODEC
dai_link->codecs->dai_name,
#else
dai_link->codecs[0].dai_name,
#endif
dai_props->codec_dai.sysclk);
//asoc_simple_canonicalize_cpu(dai_link, single_cpu);
//marco.gonnelli commented the line above and wrote the line below
asoc_simple_canonicalize_cpu(dai_link->cpus, single_cpu);
#if _SINGLE_CODEC
//asoc_simple_canonicalize_platform(dai_link);
//marco.gonnelli commented the line above and wrote the line below
asoc_simple_canonicalize_platform(dai_link->platforms , dai_link->cpus);
#endif
dai_link_of_err:
of_node_put(cpu);
of_node_put(codec);
return ret;
}
static int seeed_voice_card_parse_aux_devs(struct device_node *node,
struct seeed_card_data *priv)
{
struct device *dev = seeed_priv_to_dev(priv);
struct device_node *aux_node;
int i, n, len;
if (!of_find_property(node, PREFIX "aux-devs", &len))
return 0; /* Ok to have no aux-devs */
n = len / sizeof(__be32);
if (n <= 0)
return -EINVAL;
priv->snd_card.aux_dev = devm_kzalloc(dev,
n * sizeof(*priv->snd_card.aux_dev), GFP_KERNEL);
if (!priv->snd_card.aux_dev)
return -ENOMEM;
for (i = 0; i < n; i++) {
aux_node = of_parse_phandle(node, PREFIX "aux-devs", i);
if (!aux_node)
return -EINVAL;
priv->snd_card.aux_dev[i].dlc.of_node = aux_node;
}
priv->snd_card.num_aux_devs = n;
return 0;
}
static int seeed_voice_card_parse_of(struct device_node *node,
struct seeed_card_data *priv)
{
struct device *dev = seeed_priv_to_dev(priv);
struct device_node *dai_link;
int ret;
if (!node)
return -EINVAL;
dai_link = of_get_child_by_name(node, PREFIX "dai-link");
/* The off-codec widgets */
if (of_property_read_bool(node, PREFIX "widgets")) {
ret = snd_soc_of_parse_audio_simple_widgets(&priv->snd_card,
PREFIX "widgets");
if (ret)
goto card_parse_end;
}
/* DAPM routes */
if (of_property_read_bool(node, PREFIX "routing")) {
ret = snd_soc_of_parse_audio_routing(&priv->snd_card,
PREFIX "routing");
if (ret)
goto card_parse_end;
}
/* Factor to mclk, used in hw_params() */
of_property_read_u32(node, PREFIX "mclk-fs", &priv->mclk_fs);
/* Single/Muti DAI link(s) & New style of DT node */
if (dai_link) {
struct device_node *np = NULL;
int i = 0;
for_each_child_of_node(node, np) {
dev_dbg(dev, "\tlink %d:\n", i);
ret = seeed_voice_card_dai_link_of(np, priv,
i, false);
if (ret < 0) {
of_node_put(np);
goto card_parse_end;
}
i++;
}
} else {
/* For single DAI link & old style of DT node */
ret = seeed_voice_card_dai_link_of(node, priv, 0, true);
if (ret < 0)
goto card_parse_end;
}
ret = asoc_simple_parse_card_name(&priv->snd_card, PREFIX);
if (ret < 0)
goto card_parse_end;
ret = seeed_voice_card_parse_aux_devs(node, priv);
priv->channels_playback_default = 0;
priv->channels_playback_override = 2;
priv->channels_capture_default = 0;
priv->channels_capture_override = 2;
of_property_read_u32(node, PREFIX "channels-playback-default",
&priv->channels_playback_default);
of_property_read_u32(node, PREFIX "channels-playback-override",
&priv->channels_playback_override);
of_property_read_u32(node, PREFIX "channels-capture-default",
&priv->channels_capture_default);
of_property_read_u32(node, PREFIX "channels-capture-override",
&priv->channels_capture_override);
card_parse_end:
of_node_put(dai_link);
return ret;
}
#ifdef DEBUG
inline void seeed_debug_dai(struct seeed_card_data *priv,
char *name,
struct asoc_simple_dai *dai)
{
struct device *dev = seeed_priv_to_dev(priv);
if (dai->name)
dev_dbg(dev, "%s dai name = %s\n",
name, dai->name);
if (dai->sysclk)
dev_dbg(dev, "%s sysclk = %d\n",
name, dai->sysclk);
dev_dbg(dev, "%s direction = %s\n",
name, dai->clk_direction ? "OUT" : "IN");
if (dai->slots)
dev_dbg(dev, "%s slots = %d\n", name, dai->slots);
if (dai->slot_width)
dev_dbg(dev, "%s slot width = %d\n", name, dai->slot_width);
if (dai->tx_slot_mask)
dev_dbg(dev, "%s tx slot mask = %d\n", name, dai->tx_slot_mask);
if (dai->rx_slot_mask)
dev_dbg(dev, "%s rx slot mask = %d\n", name, dai->rx_slot_mask);
if (dai->clk)
dev_dbg(dev, "%s clk %luHz\n", name, clk_get_rate(dai->clk));
}
inline void seeed_debug_info(struct seeed_card_data *priv)
{
struct snd_soc_card *card = seeed_priv_to_card(priv);
struct device *dev = seeed_priv_to_dev(priv);
int i;
if (card->name)
dev_dbg(dev, "Card Name: %s\n", card->name);
for (i = 0; i < card->num_links; i++) {
struct seeed_dai_props *props = seeed_priv_to_props(priv, i);
struct snd_soc_dai_link *link = seeed_priv_to_link(priv, i);
dev_dbg(dev, "DAI%d\n", i);
seeed_debug_dai(priv, "cpu", &props->cpu_dai);
seeed_debug_dai(priv, "codec", &props->codec_dai);
if (link->name)
dev_dbg(dev, "dai name = %s\n", link->name);
dev_dbg(dev, "dai format = %04x\n", link->dai_fmt);
/*
if (props->adata.convert_rate)
dev_dbg(dev, "convert_rate = %d\n",
props->adata.convert_rate);
if (props->adata.convert_channels)
dev_dbg(dev, "convert_channels = %d\n",
props->adata.convert_channels);
if (props->codec_conf && props->codec_conf->name_prefix)
dev_dbg(dev, "name prefix = %s\n",
props->codec_conf->name_prefix);
*/
if (props->mclk_fs)
dev_dbg(dev, "mclk-fs = %d\n",
props->mclk_fs);
}
}
#else
#define seeed_debug_info(priv)
#endif /* DEBUG */
static int seeed_voice_card_probe(struct platform_device *pdev)
{
struct seeed_card_data *priv;
struct snd_soc_dai_link *dai_link;
struct seeed_dai_props *dai_props;
struct device_node *np = pdev->dev.of_node;
struct device *dev = &pdev->dev;
int num, ret, i;
/* Get the number of DAI links */
if (np && of_get_child_by_name(np, PREFIX "dai-link"))
num = of_get_child_count(np);
else
num = 1;
/* Allocate the private data and the DAI link array */
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
dai_props = devm_kzalloc(dev, sizeof(*dai_props) * num, GFP_KERNEL);
dai_link = devm_kzalloc(dev, sizeof(*dai_link) * num, GFP_KERNEL);
if (!dai_props || !dai_link)
return -ENOMEM;
/*
* Use snd_soc_dai_link_component instead of legacy style
* It is codec only. but cpu/platform will be supported in the future.
* see
* soc-core.c :: snd_soc_init_multicodec()
*
* "platform" might be removed
* see
* simple-card-utils.c :: asoc_simple_canonicalize_platform()
*/
for (i = 0; i < num; i++) {
dai_link[i].cpus = &dai_props[i].cpus;
dai_link[i].num_cpus = 1;
dai_link[i].codecs = &dai_props[i].codecs;
dai_link[i].num_codecs = 1;
dai_link[i].platforms = &dai_props[i].platforms;
dai_link[i].num_platforms = 1;
}
priv->dai_props = dai_props;
priv->dai_link = dai_link;
/* Init snd_soc_card */
priv->snd_card.owner = THIS_MODULE;
priv->snd_card.dev = dev;
priv->snd_card.dai_link = priv->dai_link;
priv->snd_card.num_links = num;
if (np && of_device_is_available(np)) {
ret = seeed_voice_card_parse_of(np, priv);
if (ret < 0) {
if (ret != -EPROBE_DEFER)
dev_err(dev, "parse error %d\n", ret);
goto err;
}
} else {
struct seeed_card_info *cinfo;
struct snd_soc_dai_link_component *cpus;
struct snd_soc_dai_link_component *codecs;
struct snd_soc_dai_link_component *platform;
cinfo = dev->platform_data;
if (!cinfo) {
dev_err(dev, "no info for seeed-voice-card\n");
return -EINVAL;
}
if (!cinfo->name ||
!cinfo->codec_dai.name ||
!cinfo->codec ||
!cinfo->platform ||
!cinfo->cpu_dai.name) {
dev_err(dev, "insufficient seeed_voice_card_info settings\n");
return -EINVAL;
}
cpus = dai_link->cpus;
cpus->dai_name = cinfo->cpu_dai.name;
codecs = dai_link->codecs;
codecs->name = cinfo->codec;
codecs->dai_name = cinfo->codec_dai.name;
platform = dai_link->platforms;
platform->name = cinfo->platform;
priv->snd_card.name = (cinfo->card) ? cinfo->card : cinfo->name;
dai_link->name = cinfo->name;
dai_link->stream_name = cinfo->name;
dai_link->dai_fmt = cinfo->daifmt;
dai_link->init = seeed_voice_card_dai_init;
memcpy(&priv->dai_props->cpu_dai, &cinfo->cpu_dai,
sizeof(priv->dai_props->cpu_dai));
memcpy(&priv->dai_props->codec_dai, &cinfo->codec_dai,
sizeof(priv->dai_props->codec_dai));
}
snd_soc_card_set_drvdata(&priv->snd_card, priv);
#if CONFIG_AC10X_TRIG_LOCK
spin_lock_init(&priv->lock);
#endif
INIT_WORK(&priv->work_codec_clk, work_cb_codec_clk);
seeed_debug_info(priv);
ret = devm_snd_soc_register_card(&pdev->dev, &priv->snd_card);
if (ret >= 0)
return ret;
err:
asoc_simple_clean_reference(&priv->snd_card);
return ret;
}
static int seeed_voice_card_remove(struct platform_device *pdev)
{
struct snd_soc_card *card = platform_get_drvdata(pdev);
struct seeed_card_data *priv = snd_soc_card_get_drvdata(card);
if (cancel_work_sync(&priv->work_codec_clk) != 0) {
}
return asoc_simple_clean_reference(card);
}
static const struct of_device_id seeed_voice_of_match[] = {
{ .compatible = "seeed-voicecard", },
{},
};
MODULE_DEVICE_TABLE(of, seeed_voice_of_match);
static struct platform_driver seeed_voice_card = {
.driver = {
.name = "seeed-voicecard",
.pm = &snd_soc_pm_ops,
.of_match_table = seeed_voice_of_match,
},
.probe = seeed_voice_card_probe,
.remove = seeed_voice_card_remove,
};
module_platform_driver(seeed_voice_card);
MODULE_ALIAS("platform:seeed-voice-card");
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("ASoC SEEED Voice Card");
MODULE_AUTHOR("PeterYang<linsheng.yang@seeed.cc>");
