zymon/seeed-voicecard
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

move files in place, to capture hhuysqt <1020988872@qq.com>'s ubuntu-porting work

Browse source 
git rm seeed-voicecard.c
git mv seeed-voicecard-v5.3.c seeed-voicecard.c
This commit is contained in:
Hin-Tak Leung 2020-08-05 06:05:34 +01:00
parent 920ef83b63
commit aaf0cc2c61
2 changed files with 107 additions and 759 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

731
seeed-voicecard-v5.3.c
View file

@ -1,731 +0,0 @@
/*
* 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"
/*
* 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_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 (rtd->cpu_dai->driver->playback.channels_min) {
priv->channels_playback_default = rtd->cpu_dai->driver->playback.channels_min;
}
if (rtd->cpu_dai->driver->capture.channels_min) {
priv->channels_capture_default = rtd->cpu_dai->driver->capture.channels_min;
}
rtd->cpu_dai->driver->playback.channels_min = priv->channels_playback_override;
rtd->cpu_dai->driver->playback.channels_max = priv->channels_playback_override;
rtd->cpu_dai->driver->capture.channels_min = priv->channels_capture_override;
rtd->cpu_dai->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);
rtd->cpu_dai->driver->playback.channels_min = priv->channels_playback_default;
rtd->cpu_dai->driver->playback.channels_max = priv->channels_playback_default;
rtd->cpu_dai->driver->capture.channels_min = priv->channels_capture_default;
rtd->cpu_dai->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 = rtd->codec_dai;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
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);
int seeed_voice_card_register_set_clock(int stream, int (*set_clock)(int)) {
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);
}
if (_set_clock[SNDRV_PCM_STREAM_PLAYBACK]) {
r = r || _set_clock[SNDRV_PCM_STREAM_PLAYBACK](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 = rtd->codec_dai;
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->playback_active, dai->capture_active);
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);
if (_set_clock[SNDRV_PCM_STREAM_PLAYBACK]) _set_clock[SNDRV_PCM_STREAM_PLAYBACK](1);
#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->capture_active && 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);
if (_set_clock[SNDRV_PCM_STREAM_PLAYBACK]) _set_clock[SNDRV_PCM_STREAM_PLAYBACK](0);
}
break;
default:
ret = -EINVAL;
}
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,
};
/**
* add support for kernel >= 5.3.0
* see patch:
* https://patchwork.kernel.org/patch/10860821/
* https://patchwork.kernel.org/patch/10860823/
*/
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;
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_tdm_slot(dai,
simple_dai->tx_slot_mask,
simple_dai->rx_slot_mask,
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;
}
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 = rtd->codec_dai;
struct snd_soc_dai *cpu = rtd->cpu_dai;
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;
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);
if (ret < 0)
goto dai_link_of_err;
#if _SINGLE_CODEC
ret = asoc_simple_parse_codec(codec, dai_link);
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);
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);
#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);
#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);
#if _SINGLE_CODEC
asoc_simple_canonicalize_platform(dai_link);
#endif
asoc_simple_canonicalize_cpu(dai_link, single_cpu);
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].codec_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;
}
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;
/* 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;
priv->dai_props = dai_props;
priv->dai_link = dai_link;
/**
* Only support single template for now
*/
dai_link->cpus = &dai_props->cpus;
dai_link->codecs = &dai_props->codecs;
dai_link->platforms = &dai_props->platforms;
dai_link->num_cpus =
dai_link->num_codecs =
dai_link->num_platforms = 1;
/* 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;
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;
}
priv->snd_card.name = (cinfo->card) ? cinfo->card : cinfo->name;
dai_link->name = cinfo->name;
dai_link->stream_name = cinfo->name;
dai_link->platforms->name = cinfo->platform;
dai_link->codecs->name = cinfo->codec;
dai_link->cpus->dai_name = cinfo->cpu_dai.name;
dai_link->codecs->dai_name = cinfo->codec_dai.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);
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>");

135
seeed-voicecard.c
View file

@ -40,6 +40,9 @@ struct seeed_card_data {
struct seeed_dai_props { struct seeed_dai_props {
struct asoc_simple_dai cpu_dai; struct asoc_simple_dai cpu_dai;
struct asoc_simple_dai codec_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; unsigned int mclk_fs;
} *dai_props; } *dai_props;
unsigned int mclk_fs; unsigned int mclk_fs;
@ -250,6 +253,74 @@ static struct snd_soc_ops seeed_voice_card_ops = {
.trigger = seeed_voice_card_trigger, .trigger = seeed_voice_card_trigger,
}; };
/**
* add support for kernel >= 5.3.0
* see patch:
* https://patchwork.kernel.org/patch/10860821/
* https://patchwork.kernel.org/patch/10860823/
*/
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;
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_tdm_slot(dai,
simple_dai->tx_slot_mask,
simple_dai->rx_slot_mask,
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;
}
static int seeed_voice_card_dai_init(struct snd_soc_pcm_runtime *rtd) 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 seeed_card_data *priv = snd_soc_card_get_drvdata(rtd->card);
@ -259,11 +330,11 @@ static int seeed_voice_card_dai_init(struct snd_soc_pcm_runtime *rtd)
seeed_priv_to_props(priv, rtd->num); seeed_priv_to_props(priv, rtd->num);
int ret; int ret;
ret = asoc_simple_card_init_dai(codec, &dai_props->codec_dai); ret = asoc_simple_init_dai(codec, &dai_props->codec_dai);
if (ret < 0) if (ret < 0)
return ret; return ret;
ret = asoc_simple_card_init_dai(cpu, &dai_props->cpu_dai); ret = asoc_simple_init_dai(cpu, &dai_props->cpu_dai);
if (ret < 0) if (ret < 0)
return ret; return ret;
@ -312,20 +383,20 @@ static int seeed_voice_card_dai_link_of(struct device_node *node,
goto dai_link_of_err; goto dai_link_of_err;
} }
ret = asoc_simple_card_parse_daifmt(dev, node, codec, ret = asoc_simple_parse_daifmt(dev, node, codec,
prefix, &dai_link->dai_fmt); prefix, &dai_link->dai_fmt);
if (ret < 0) if (ret < 0)
goto dai_link_of_err; goto dai_link_of_err;
of_property_read_u32(node, "mclk-fs", &dai_props->mclk_fs); of_property_read_u32(node, "mclk-fs", &dai_props->mclk_fs);
ret = asoc_simple_card_parse_cpu(cpu, dai_link, ret = asoc_simple_parse_cpu(cpu, dai_link,
DAI, CELL, &single_cpu); &single_cpu);
if (ret < 0) if (ret < 0)
goto dai_link_of_err; goto dai_link_of_err;
#if _SINGLE_CODEC #if _SINGLE_CODEC
ret = asoc_simple_card_parse_codec(codec, dai_link, DAI, CELL); ret = asoc_simple_parse_codec(codec, dai_link);
if (ret < 0) if (ret < 0)
goto dai_link_of_err; goto dai_link_of_err;
#else #else
@ -337,7 +408,7 @@ static int seeed_voice_card_dai_link_of(struct device_node *node,
dev_dbg(dev, "dai_link num_codecs = %d\n", dai_link->num_codecs); dev_dbg(dev, "dai_link num_codecs = %d\n", dai_link->num_codecs);
#endif #endif
ret = asoc_simple_card_parse_platform(plat, dai_link, DAI, CELL); ret = asoc_simple_parse_platform(plat, dai_link);
if (ret < 0) if (ret < 0)
goto dai_link_of_err; goto dai_link_of_err;
@ -362,7 +433,7 @@ static int seeed_voice_card_dai_link_of(struct device_node *node,
#if LINUX_VERSION_CODE <= KERNEL_VERSION(4,10,0) #if LINUX_VERSION_CODE <= KERNEL_VERSION(4,10,0)
ret = asoc_simple_card_parse_clk_cpu(cpu, dai_link, cpu_dai); ret = asoc_simple_card_parse_clk_cpu(cpu, dai_link, cpu_dai);
#else #else
ret = asoc_simple_card_parse_clk_cpu(dev, cpu, dai_link, cpu_dai); ret = asoc_simple_parse_clk_cpu(dev, cpu, dai_link, cpu_dai);
#endif #endif
if (ret < 0) if (ret < 0)
goto dai_link_of_err; goto dai_link_of_err;
@ -370,22 +441,16 @@ static int seeed_voice_card_dai_link_of(struct device_node *node,
#if LINUX_VERSION_CODE <= KERNEL_VERSION(4,10,0) #if LINUX_VERSION_CODE <= KERNEL_VERSION(4,10,0)
ret = asoc_simple_card_parse_clk_codec(codec, dai_link, codec_dai); ret = asoc_simple_card_parse_clk_codec(codec, dai_link, codec_dai);
#else #else
ret = asoc_simple_card_parse_clk_codec(dev, codec, dai_link, codec_dai); ret = asoc_simple_parse_clk_codec(dev, codec, dai_link, codec_dai);
#endif #endif
if (ret < 0) if (ret < 0)
goto dai_link_of_err; goto dai_link_of_err;
#if _SINGLE_CODEC ret = asoc_simple_set_dailink_name(dev, dai_link,
ret = asoc_simple_card_canonicalize_dailink(dai_link);
if (ret < 0)
goto dai_link_of_err;
#endif
ret = asoc_simple_card_set_dailink_name(dev, dai_link,
"%s-%s", "%s-%s",
dai_link->cpu_dai_name, dai_link->cpus->dai_name,
#if _SINGLE_CODEC #if _SINGLE_CODEC
dai_link->codec_dai_name dai_link->codecs->dai_name
#else #else
dai_link->codecs[0].dai_name dai_link->codecs[0].dai_name
#endif #endif
@ -399,17 +464,21 @@ static int seeed_voice_card_dai_link_of(struct device_node *node,
dev_dbg(dev, "\tname : %s\n", dai_link->stream_name); dev_dbg(dev, "\tname : %s\n", dai_link->stream_name);
dev_dbg(dev, "\tformat : %04x\n", dai_link->dai_fmt); dev_dbg(dev, "\tformat : %04x\n", dai_link->dai_fmt);
dev_dbg(dev, "\tcpu : %s / %d\n", dev_dbg(dev, "\tcpu : %s / %d\n",
dai_link->cpu_dai_name, dai_link->cpus->dai_name,
dai_props->cpu_dai.sysclk); dai_props->cpu_dai.sysclk);
dev_dbg(dev, "\tcodec : %s / %d\n", dev_dbg(dev, "\tcodec : %s / %d\n",
#if _SINGLE_CODEC #if _SINGLE_CODEC
dai_link->codec_dai_name, dai_link->codecs->dai_name,
#else #else
dai_link->codecs[0].dai_name, dai_link->codecs[0].dai_name,
#endif #endif
dai_props->codec_dai.sysclk); dai_props->codec_dai.sysclk);
asoc_simple_card_canonicalize_cpu(dai_link, single_cpu); #if _SINGLE_CODEC
asoc_simple_canonicalize_platform(dai_link);
#endif
asoc_simple_canonicalize_cpu(dai_link, single_cpu);
dai_link_of_err: dai_link_of_err:
of_node_put(cpu); of_node_put(cpu);
@ -501,7 +570,7 @@ static int seeed_voice_card_parse_of(struct device_node *node,
goto card_parse_end; goto card_parse_end;
} }
ret = asoc_simple_card_parse_card_name(&priv->snd_card, PREFIX); ret = asoc_simple_parse_card_name(&priv->snd_card, PREFIX);
if (ret < 0) if (ret < 0)
goto card_parse_end; goto card_parse_end;
@ -554,6 +623,16 @@ static int seeed_voice_card_probe(struct platform_device *pdev)
priv->dai_props = dai_props; priv->dai_props = dai_props;
priv->dai_link = dai_link; priv->dai_link = dai_link;
/**
* Only support single template for now
*/
dai_link->cpus = &dai_props->cpus;
dai_link->codecs = &dai_props->codecs;
dai_link->platforms = &dai_props->platforms;
dai_link->num_cpus =
dai_link->num_codecs =
dai_link->num_platforms = 1;
/* Init snd_soc_card */ /* Init snd_soc_card */
priv->snd_card.owner = THIS_MODULE; priv->snd_card.owner = THIS_MODULE;
priv->snd_card.dev = dev; priv->snd_card.dev = dev;
@ -588,10 +667,10 @@ static int seeed_voice_card_probe(struct platform_device *pdev)
priv->snd_card.name = (cinfo->card) ? cinfo->card : cinfo->name; priv->snd_card.name = (cinfo->card) ? cinfo->card : cinfo->name;
dai_link->name = cinfo->name; dai_link->name = cinfo->name;
dai_link->stream_name = cinfo->name; dai_link->stream_name = cinfo->name;
dai_link->platform_name = cinfo->platform; dai_link->platforms->name = cinfo->platform;
dai_link->codec_name = cinfo->codec; dai_link->codecs->name = cinfo->codec;
dai_link->cpu_dai_name = cinfo->cpu_dai.name; dai_link->cpus->dai_name = cinfo->cpu_dai.name;
dai_link->codec_dai_name = cinfo->codec_dai.name; dai_link->codecs->dai_name = cinfo->codec_dai.name;
dai_link->dai_fmt = cinfo->daifmt; dai_link->dai_fmt = cinfo->daifmt;
dai_link->init = seeed_voice_card_dai_init; dai_link->init = seeed_voice_card_dai_init;
memcpy(&priv->dai_props->cpu_dai, &cinfo->cpu_dai, memcpy(&priv->dai_props->cpu_dai, &cinfo->cpu_dai,
@ -613,7 +692,7 @@ static int seeed_voice_card_probe(struct platform_device *pdev)
return ret; return ret;
err: err:
asoc_simple_card_clean_reference(&priv->snd_card); asoc_simple_clean_reference(&priv->snd_card);
return ret; return ret;
} }
@ -625,7 +704,7 @@ static int seeed_voice_card_remove(struct platform_device *pdev)
if (cancel_work_sync(&priv->work_codec_clk) != 0) { if (cancel_work_sync(&priv->work_codec_clk) != 0) {
} }
return asoc_simple_card_clean_reference(card); return asoc_simple_clean_reference(card);
} }
static const struct of_device_id seeed_voice_of_match[] = { static const struct of_device_id seeed_voice_of_match[] = {