mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-06 02:24:14 +08:00
6bc37d32f6
Use the new common snd_soc_of_parse_aux_devs() helper function to parse auxiliary devices from the device tree. The new helper is just a copy of meson_card_add_aux_devices() so there is no functional change. Signed-off-by: Stephan Gerhold <stephan@gerhold.net> Link: https://lore.kernel.org/r/20200801100257.22658-3-stephan@gerhold.net Signed-off-by: Mark Brown <broonie@kernel.org>
358 lines
8.0 KiB
C
358 lines
8.0 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
//
|
|
// Copyright (c) 2020 BayLibre, SAS.
|
|
// Author: Jerome Brunet <jbrunet@baylibre.com>
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/of_platform.h>
|
|
#include <sound/soc.h>
|
|
|
|
#include "meson-card.h"
|
|
|
|
int meson_card_i2s_set_sysclk(struct snd_pcm_substream *substream,
|
|
struct snd_pcm_hw_params *params,
|
|
unsigned int mclk_fs)
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
|
|
struct snd_soc_dai *codec_dai;
|
|
unsigned int mclk;
|
|
int ret, i;
|
|
|
|
if (!mclk_fs)
|
|
return 0;
|
|
|
|
mclk = params_rate(params) * mclk_fs;
|
|
|
|
for_each_rtd_codec_dais(rtd, i, codec_dai) {
|
|
ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
|
|
SND_SOC_CLOCK_IN);
|
|
if (ret && ret != -ENOTSUPP)
|
|
return ret;
|
|
}
|
|
|
|
ret = snd_soc_dai_set_sysclk(asoc_rtd_to_cpu(rtd, 0), 0, mclk,
|
|
SND_SOC_CLOCK_OUT);
|
|
if (ret && ret != -ENOTSUPP)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(meson_card_i2s_set_sysclk);
|
|
|
|
int meson_card_reallocate_links(struct snd_soc_card *card,
|
|
unsigned int num_links)
|
|
{
|
|
struct meson_card *priv = snd_soc_card_get_drvdata(card);
|
|
struct snd_soc_dai_link *links;
|
|
void **ldata;
|
|
|
|
links = krealloc(priv->card.dai_link,
|
|
num_links * sizeof(*priv->card.dai_link),
|
|
GFP_KERNEL | __GFP_ZERO);
|
|
if (!links)
|
|
goto err_links;
|
|
|
|
ldata = krealloc(priv->link_data,
|
|
num_links * sizeof(*priv->link_data),
|
|
GFP_KERNEL | __GFP_ZERO);
|
|
if (!ldata)
|
|
goto err_ldata;
|
|
|
|
priv->card.dai_link = links;
|
|
priv->link_data = ldata;
|
|
priv->card.num_links = num_links;
|
|
return 0;
|
|
|
|
err_ldata:
|
|
kfree(links);
|
|
err_links:
|
|
dev_err(priv->card.dev, "failed to allocate links\n");
|
|
return -ENOMEM;
|
|
|
|
}
|
|
EXPORT_SYMBOL_GPL(meson_card_reallocate_links);
|
|
|
|
int meson_card_parse_dai(struct snd_soc_card *card,
|
|
struct device_node *node,
|
|
struct device_node **dai_of_node,
|
|
const char **dai_name)
|
|
{
|
|
struct of_phandle_args args;
|
|
int ret;
|
|
|
|
if (!dai_name || !dai_of_node || !node)
|
|
return -EINVAL;
|
|
|
|
ret = of_parse_phandle_with_args(node, "sound-dai",
|
|
"#sound-dai-cells", 0, &args);
|
|
if (ret) {
|
|
if (ret != -EPROBE_DEFER)
|
|
dev_err(card->dev, "can't parse dai %d\n", ret);
|
|
return ret;
|
|
}
|
|
*dai_of_node = args.np;
|
|
|
|
return snd_soc_get_dai_name(&args, dai_name);
|
|
}
|
|
EXPORT_SYMBOL_GPL(meson_card_parse_dai);
|
|
|
|
static int meson_card_set_link_name(struct snd_soc_card *card,
|
|
struct snd_soc_dai_link *link,
|
|
struct device_node *node,
|
|
const char *prefix)
|
|
{
|
|
char *name = devm_kasprintf(card->dev, GFP_KERNEL, "%s.%s",
|
|
prefix, node->full_name);
|
|
if (!name)
|
|
return -ENOMEM;
|
|
|
|
link->name = name;
|
|
link->stream_name = name;
|
|
|
|
return 0;
|
|
}
|
|
|
|
unsigned int meson_card_parse_daifmt(struct device_node *node,
|
|
struct device_node *cpu_node)
|
|
{
|
|
struct device_node *bitclkmaster = NULL;
|
|
struct device_node *framemaster = NULL;
|
|
unsigned int daifmt;
|
|
|
|
daifmt = snd_soc_of_parse_daifmt(node, "",
|
|
&bitclkmaster, &framemaster);
|
|
daifmt &= ~SND_SOC_DAIFMT_MASTER_MASK;
|
|
|
|
/* If no master is provided, default to cpu master */
|
|
if (!bitclkmaster || bitclkmaster == cpu_node) {
|
|
daifmt |= (!framemaster || framemaster == cpu_node) ?
|
|
SND_SOC_DAIFMT_CBS_CFS : SND_SOC_DAIFMT_CBS_CFM;
|
|
} else {
|
|
daifmt |= (!framemaster || framemaster == cpu_node) ?
|
|
SND_SOC_DAIFMT_CBM_CFS : SND_SOC_DAIFMT_CBM_CFM;
|
|
}
|
|
|
|
of_node_put(bitclkmaster);
|
|
of_node_put(framemaster);
|
|
|
|
return daifmt;
|
|
}
|
|
EXPORT_SYMBOL_GPL(meson_card_parse_daifmt);
|
|
|
|
int meson_card_set_be_link(struct snd_soc_card *card,
|
|
struct snd_soc_dai_link *link,
|
|
struct device_node *node)
|
|
{
|
|
struct snd_soc_dai_link_component *codec;
|
|
struct device_node *np;
|
|
int ret, num_codecs;
|
|
|
|
num_codecs = of_get_child_count(node);
|
|
if (!num_codecs) {
|
|
dev_err(card->dev, "be link %s has no codec\n",
|
|
node->full_name);
|
|
return -EINVAL;
|
|
}
|
|
|
|
codec = devm_kcalloc(card->dev, num_codecs, sizeof(*codec), GFP_KERNEL);
|
|
if (!codec)
|
|
return -ENOMEM;
|
|
|
|
link->codecs = codec;
|
|
link->num_codecs = num_codecs;
|
|
|
|
for_each_child_of_node(node, np) {
|
|
ret = meson_card_parse_dai(card, np, &codec->of_node,
|
|
&codec->dai_name);
|
|
if (ret) {
|
|
of_node_put(np);
|
|
return ret;
|
|
}
|
|
|
|
codec++;
|
|
}
|
|
|
|
ret = meson_card_set_link_name(card, link, node, "be");
|
|
if (ret)
|
|
dev_err(card->dev, "error setting %pOFn link name\n", np);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(meson_card_set_be_link);
|
|
|
|
int meson_card_set_fe_link(struct snd_soc_card *card,
|
|
struct snd_soc_dai_link *link,
|
|
struct device_node *node,
|
|
bool is_playback)
|
|
{
|
|
struct snd_soc_dai_link_component *codec;
|
|
|
|
codec = devm_kzalloc(card->dev, sizeof(*codec), GFP_KERNEL);
|
|
if (!codec)
|
|
return -ENOMEM;
|
|
|
|
link->codecs = codec;
|
|
link->num_codecs = 1;
|
|
|
|
link->dynamic = 1;
|
|
link->dpcm_merged_format = 1;
|
|
link->dpcm_merged_chan = 1;
|
|
link->dpcm_merged_rate = 1;
|
|
link->codecs->dai_name = "snd-soc-dummy-dai";
|
|
link->codecs->name = "snd-soc-dummy";
|
|
|
|
if (is_playback)
|
|
link->dpcm_playback = 1;
|
|
else
|
|
link->dpcm_capture = 1;
|
|
|
|
return meson_card_set_link_name(card, link, node, "fe");
|
|
}
|
|
EXPORT_SYMBOL_GPL(meson_card_set_fe_link);
|
|
|
|
static int meson_card_add_links(struct snd_soc_card *card)
|
|
{
|
|
struct meson_card *priv = snd_soc_card_get_drvdata(card);
|
|
struct device_node *node = card->dev->of_node;
|
|
struct device_node *np;
|
|
int num, i, ret;
|
|
|
|
num = of_get_child_count(node);
|
|
if (!num) {
|
|
dev_err(card->dev, "card has no links\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = meson_card_reallocate_links(card, num);
|
|
if (ret)
|
|
return ret;
|
|
|
|
i = 0;
|
|
for_each_child_of_node(node, np) {
|
|
ret = priv->match_data->add_link(card, np, &i);
|
|
if (ret) {
|
|
of_node_put(np);
|
|
return ret;
|
|
}
|
|
|
|
i++;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int meson_card_parse_of_optional(struct snd_soc_card *card,
|
|
const char *propname,
|
|
int (*func)(struct snd_soc_card *c,
|
|
const char *p))
|
|
{
|
|
/* If property is not provided, don't fail ... */
|
|
if (!of_property_read_bool(card->dev->of_node, propname))
|
|
return 0;
|
|
|
|
/* ... but do fail if it is provided and the parsing fails */
|
|
return func(card, propname);
|
|
}
|
|
|
|
static void meson_card_clean_references(struct meson_card *priv)
|
|
{
|
|
struct snd_soc_card *card = &priv->card;
|
|
struct snd_soc_dai_link *link;
|
|
struct snd_soc_dai_link_component *codec;
|
|
struct snd_soc_aux_dev *aux;
|
|
int i, j;
|
|
|
|
if (card->dai_link) {
|
|
for_each_card_prelinks(card, i, link) {
|
|
if (link->cpus)
|
|
of_node_put(link->cpus->of_node);
|
|
for_each_link_codecs(link, j, codec)
|
|
of_node_put(codec->of_node);
|
|
}
|
|
}
|
|
|
|
if (card->aux_dev) {
|
|
for_each_card_pre_auxs(card, i, aux)
|
|
of_node_put(aux->dlc.of_node);
|
|
}
|
|
|
|
kfree(card->dai_link);
|
|
kfree(priv->link_data);
|
|
}
|
|
|
|
int meson_card_probe(struct platform_device *pdev)
|
|
{
|
|
const struct meson_card_match_data *data;
|
|
struct device *dev = &pdev->dev;
|
|
struct meson_card *priv;
|
|
int ret;
|
|
|
|
data = of_device_get_match_data(dev);
|
|
if (!data) {
|
|
dev_err(dev, "failed to match device\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
|
|
if (!priv)
|
|
return -ENOMEM;
|
|
|
|
platform_set_drvdata(pdev, priv);
|
|
snd_soc_card_set_drvdata(&priv->card, priv);
|
|
|
|
priv->card.owner = THIS_MODULE;
|
|
priv->card.dev = dev;
|
|
priv->match_data = data;
|
|
|
|
ret = snd_soc_of_parse_card_name(&priv->card, "model");
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = meson_card_parse_of_optional(&priv->card, "audio-routing",
|
|
snd_soc_of_parse_audio_routing);
|
|
if (ret) {
|
|
dev_err(dev, "error while parsing routing\n");
|
|
return ret;
|
|
}
|
|
|
|
ret = meson_card_parse_of_optional(&priv->card, "audio-widgets",
|
|
snd_soc_of_parse_audio_simple_widgets);
|
|
if (ret) {
|
|
dev_err(dev, "error while parsing widgets\n");
|
|
return ret;
|
|
}
|
|
|
|
ret = meson_card_add_links(&priv->card);
|
|
if (ret)
|
|
goto out_err;
|
|
|
|
ret = snd_soc_of_parse_aux_devs(&priv->card, "audio-aux-devs");
|
|
if (ret)
|
|
goto out_err;
|
|
|
|
ret = devm_snd_soc_register_card(dev, &priv->card);
|
|
if (ret)
|
|
goto out_err;
|
|
|
|
return 0;
|
|
|
|
out_err:
|
|
meson_card_clean_references(priv);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(meson_card_probe);
|
|
|
|
int meson_card_remove(struct platform_device *pdev)
|
|
{
|
|
struct meson_card *priv = platform_get_drvdata(pdev);
|
|
|
|
meson_card_clean_references(priv);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(meson_card_remove);
|
|
|
|
MODULE_DESCRIPTION("Amlogic Sound Card Utils");
|
|
MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
|
|
MODULE_LICENSE("GPL v2");
|