ASoC: add audio-graph-card support
OF-graph base DT binding are used on V4L2, and ALSA SoC is using different style of DT today. Now ALSA SoC supports simple-card driver for generic/simple sound card. In the future, V4L2 / ALSA will support HDMI, and then, DT bindings between V4L2 / ALSA should be merged. This patch adds new Audio Graph Card which is OF-graph base of simple-card Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Mark Brown <broonie@kernel.org>zero-colors
Kuninori Morimoto
Mark Brown
parent
2d4e31de5b
commit
2692c1c63c
|
|
@ -14,3 +14,11 @@ config SND_SIMPLE_SCU_CARD
|
|||
help
|
||||
This option enables generic simple SCU sound card support.
|
||||
It supports DPCM of multi CPU single Codec system.
|
||||
|
||||
config SND_AUDIO_GRAPH_CARD
|
||||
tristate "ASoC Audio Graph sound card support"
|
||||
depends on OF
|
||||
select SND_SIMPLE_CARD_UTILS
|
||||
help
|
||||
This option enables generic simple simple sound card support
|
||||
with OF-graph DT bindings.
|
||||
|
|
|
|||
|
|
@ -1,7 +1,9 @@
|
|||
snd-soc-simple-card-utils-objs := simple-card-utils.o
|
||||
snd-soc-simple-card-objs := simple-card.o
|
||||
snd-soc-simple-scu-card-objs := simple-scu-card.o
|
||||
snd-soc-audio-graph-card-objs := audio-graph-card.o
|
||||
|
||||
obj-$(CONFIG_SND_SIMPLE_CARD_UTILS) += snd-soc-simple-card-utils.o
|
||||
obj-$(CONFIG_SND_SIMPLE_CARD) += snd-soc-simple-card.o
|
||||
obj-$(CONFIG_SND_SIMPLE_SCU_CARD) += snd-soc-simple-scu-card.o
|
||||
obj-$(CONFIG_SND_AUDIO_GRAPH_CARD) += snd-soc-audio-graph-card.o
|
||||
|
|
|
|||
|
|
@ -0,0 +1,308 @@
|
|||
/*
|
||||
* ASoC audio graph sound card support
|
||||
*
|
||||
* Copyright (C) 2016 Renesas Solutions Corp.
|
||||
* Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
|
||||
*
|
||||
* based on ${LINUX}/sound/soc/generic/simple-card.c
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
#include <linux/clk.h>
|
||||
#include <linux/device.h>
|
||||
#include <linux/gpio.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/of.h>
|
||||
#include <linux/of_device.h>
|
||||
#include <linux/of_gpio.h>
|
||||
#include <linux/of_graph.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/string.h>
|
||||
#include <sound/jack.h>
|
||||
#include <sound/simple_card_utils.h>
|
||||
|
||||
struct graph_card_data {
|
||||
struct snd_soc_card snd_card;
|
||||
struct graph_dai_props {
|
||||
struct asoc_simple_dai cpu_dai;
|
||||
struct asoc_simple_dai codec_dai;
|
||||
} *dai_props;
|
||||
struct snd_soc_dai_link *dai_link;
|
||||
};
|
||||
|
||||
#define graph_priv_to_card(priv) (&(priv)->snd_card)
|
||||
#define graph_priv_to_props(priv, i) ((priv)->dai_props + (i))
|
||||
#define graph_priv_to_dev(priv) (graph_priv_to_card(priv)->dev)
|
||||
#define graph_priv_to_link(priv, i) (graph_priv_to_card(priv)->dai_link + (i))
|
||||
|
||||
static int asoc_graph_card_startup(struct snd_pcm_substream *substream)
|
||||
{
|
||||
struct snd_soc_pcm_runtime *rtd = substream->private_data;
|
||||
struct graph_card_data *priv = snd_soc_card_get_drvdata(rtd->card);
|
||||
struct graph_dai_props *dai_props = graph_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);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void asoc_graph_card_shutdown(struct snd_pcm_substream *substream)
|
||||
{
|
||||
struct snd_soc_pcm_runtime *rtd = substream->private_data;
|
||||
struct graph_card_data *priv = snd_soc_card_get_drvdata(rtd->card);
|
||||
struct graph_dai_props *dai_props = graph_priv_to_props(priv, rtd->num);
|
||||
|
||||
clk_disable_unprepare(dai_props->cpu_dai.clk);
|
||||
|
||||
clk_disable_unprepare(dai_props->codec_dai.clk);
|
||||
}
|
||||
|
||||
static struct snd_soc_ops asoc_graph_card_ops = {
|
||||
.startup = asoc_graph_card_startup,
|
||||
.shutdown = asoc_graph_card_shutdown,
|
||||
};
|
||||
|
||||
static int asoc_graph_card_dai_init(struct snd_soc_pcm_runtime *rtd)
|
||||
{
|
||||
struct graph_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 graph_dai_props *dai_props =
|
||||
graph_priv_to_props(priv, rtd->num);
|
||||
int ret;
|
||||
|
||||
ret = asoc_simple_card_init_dai(codec, &dai_props->codec_dai);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
ret = asoc_simple_card_init_dai(cpu, &dai_props->cpu_dai);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int asoc_graph_card_dai_link_of(struct device_node *cpu_port,
|
||||
struct graph_card_data *priv,
|
||||
int idx)
|
||||
{
|
||||
struct device *dev = graph_priv_to_dev(priv);
|
||||
struct snd_soc_dai_link *dai_link = graph_priv_to_link(priv, idx);
|
||||
struct graph_dai_props *dai_props = graph_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 snd_soc_card *card = graph_priv_to_card(priv);
|
||||
struct device_node *cpu_ep = of_get_next_child(cpu_port, NULL);
|
||||
struct device_node *codec_ep = of_graph_get_remote_endpoint(cpu_ep);
|
||||
struct device_node *rcpu_ep = of_graph_get_remote_endpoint(codec_ep);
|
||||
int ret;
|
||||
|
||||
if (rcpu_ep != cpu_ep) {
|
||||
dev_err(dev, "remote-endpoint missmatch (%s/%s/%s)\n",
|
||||
cpu_ep->name, codec_ep->name, rcpu_ep->name);
|
||||
ret = -EINVAL;
|
||||
goto dai_link_of_err;
|
||||
}
|
||||
|
||||
ret = asoc_simple_card_parse_daifmt(dev, cpu_ep, codec_ep,
|
||||
NULL, &dai_link->dai_fmt);
|
||||
if (ret < 0)
|
||||
goto dai_link_of_err;
|
||||
|
||||
/*
|
||||
* we need to consider "mclk-fs" around here
|
||||
* see simple-card
|
||||
*/
|
||||
|
||||
ret = asoc_simple_card_parse_graph_cpu(cpu_ep, dai_link);
|
||||
if (ret < 0)
|
||||
goto dai_link_of_err;
|
||||
|
||||
ret = asoc_simple_card_parse_graph_codec(codec_ep, dai_link);
|
||||
if (ret < 0)
|
||||
goto dai_link_of_err;
|
||||
|
||||
ret = snd_soc_of_parse_tdm_slot(cpu_ep,
|
||||
&cpu_dai->tx_slot_mask,
|
||||
&cpu_dai->rx_slot_mask,
|
||||
&cpu_dai->slots,
|
||||
&cpu_dai->slot_width);
|
||||
if (ret < 0)
|
||||
goto dai_link_of_err;
|
||||
|
||||
ret = snd_soc_of_parse_tdm_slot(codec_ep,
|
||||
&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;
|
||||
|
||||
ret = asoc_simple_card_parse_clk_cpu(dev, cpu_ep, dai_link, cpu_dai);
|
||||
if (ret < 0)
|
||||
goto dai_link_of_err;
|
||||
|
||||
ret = asoc_simple_card_parse_clk_codec(dev, codec_ep, dai_link, codec_dai);
|
||||
if (ret < 0)
|
||||
goto dai_link_of_err;
|
||||
|
||||
ret = asoc_simple_card_canonicalize_dailink(dai_link);
|
||||
if (ret < 0)
|
||||
goto dai_link_of_err;
|
||||
|
||||
ret = asoc_simple_card_set_dailink_name(dev, dai_link,
|
||||
"%s-%s",
|
||||
dai_link->cpu_dai_name,
|
||||
dai_link->codec_dai_name);
|
||||
if (ret < 0)
|
||||
goto dai_link_of_err;
|
||||
|
||||
dai_link->ops = &asoc_graph_card_ops;
|
||||
dai_link->init = asoc_graph_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->cpu_dai_name,
|
||||
cpu_dai->sysclk);
|
||||
dev_dbg(dev, "\tcodec : %s / %d\n",
|
||||
dai_link->codec_dai_name,
|
||||
codec_dai->sysclk);
|
||||
|
||||
asoc_simple_card_canonicalize_cpu(dai_link,
|
||||
card->num_links == 1);
|
||||
|
||||
dai_link_of_err:
|
||||
of_node_put(cpu_ep);
|
||||
of_node_put(rcpu_ep);
|
||||
of_node_put(codec_ep);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int asoc_graph_card_parse_of(struct graph_card_data *priv)
|
||||
{
|
||||
struct of_phandle_iterator it;
|
||||
struct device *dev = graph_priv_to_dev(priv);
|
||||
struct snd_soc_card *card = graph_priv_to_card(priv);
|
||||
struct device_node *node = dev->of_node;
|
||||
int rc, idx = 0;
|
||||
int ret;
|
||||
|
||||
/*
|
||||
* we need to consider "widgets", "routing", "mclk-fs" around here
|
||||
* see simple-card
|
||||
*/
|
||||
|
||||
of_for_each_phandle(&it, rc, node, "dais", NULL, 0) {
|
||||
ret = asoc_graph_card_dai_link_of(it.node, priv, idx++);
|
||||
of_node_put(it.node);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
}
|
||||
|
||||
return asoc_simple_card_parse_card_name(card, NULL);
|
||||
}
|
||||
|
||||
static int asoc_graph_get_dais_count(struct device *dev)
|
||||
{
|
||||
struct of_phandle_iterator it;
|
||||
struct device_node *node = dev->of_node;
|
||||
int count = 0;
|
||||
int rc;
|
||||
|
||||
of_for_each_phandle(&it, rc, node, "dais", NULL, 0) {
|
||||
count++;
|
||||
of_node_put(it.node);
|
||||
}
|
||||
|
||||
return count;
|
||||
}
|
||||
|
||||
static int asoc_graph_card_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct graph_card_data *priv;
|
||||
struct snd_soc_dai_link *dai_link;
|
||||
struct graph_dai_props *dai_props;
|
||||
struct device *dev = &pdev->dev;
|
||||
struct snd_soc_card *card;
|
||||
int num, ret;
|
||||
|
||||
/* Allocate the private data and the DAI link array */
|
||||
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
|
||||
if (!priv)
|
||||
return -ENOMEM;
|
||||
|
||||
num = asoc_graph_get_dais_count(dev);
|
||||
if (num == 0)
|
||||
return -EINVAL;
|
||||
|
||||
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;
|
||||
|
||||
/* Init snd_soc_card */
|
||||
card = graph_priv_to_card(priv);
|
||||
card->owner = THIS_MODULE;
|
||||
card->dev = dev;
|
||||
card->dai_link = dai_link;
|
||||
card->num_links = num;
|
||||
|
||||
ret = asoc_graph_card_parse_of(priv);
|
||||
if (ret < 0) {
|
||||
if (ret != -EPROBE_DEFER)
|
||||
dev_err(dev, "parse error %d\n", ret);
|
||||
goto err;
|
||||
}
|
||||
|
||||
snd_soc_card_set_drvdata(card, priv);
|
||||
|
||||
ret = devm_snd_soc_register_card(dev, card);
|
||||
if (ret >= 0)
|
||||
return ret;
|
||||
err:
|
||||
asoc_simple_card_clean_reference(card);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int asoc_graph_card_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct snd_soc_card *card = platform_get_drvdata(pdev);
|
||||
|
||||
return asoc_simple_card_clean_reference(card);
|
||||
}
|
||||
|
||||
static const struct of_device_id asoc_graph_of_match[] = {
|
||||
{ .compatible = "audio-graph-card", },
|
||||
{},
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, asoc_graph_of_match);
|
||||
|
||||
static struct platform_driver asoc_graph_card = {
|
||||
.driver = {
|
||||
.name = "asoc-audio-graph-card",
|
||||
.of_match_table = asoc_graph_of_match,
|
||||
},
|
||||
.probe = asoc_graph_card_probe,
|
||||
.remove = asoc_graph_card_remove,
|
||||
};
|
||||
module_platform_driver(asoc_graph_card);
|
||||
|
||||
MODULE_ALIAS("platform:asoc-audio-graph-card");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
MODULE_DESCRIPTION("ASoC Audio Graph Sound Card");
|
||||
MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
|
||||
Loading…
Reference in New Issue