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Merge remote-tracking branch 'asoc/topic/rcar' into asoc-next

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Mark Brown 2016-09-29 12:44:02 -07:00
commit 81af726167
12 changed files with 682 additions and 722 deletions
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75
Documentation/devicetree/bindings/sound/renesas,rsrc-card.txt
View file

@ -1,75 +0,0 @@
Renesas Sampling Rate Convert Sound Card:
Renesas Sampling Rate Convert Sound Card specifies audio DAI connections of SoC <-> codec.
Required properties:
- compatible : "renesas,rsrc-card{,<board>}"
Examples with boards are:
- "renesas,rsrc-card"
- "renesas,rsrc-card,lager"
- "renesas,rsrc-card,koelsch"
Optional properties:
- card_name : User specified audio sound card name, one string
property.
- cpu : CPU sub-node
- codec : CODEC sub-node
Optional subnode properties:
- format : CPU/CODEC common audio format.
"i2s", "right_j", "left_j" , "dsp_a"
"dsp_b", "ac97", "pdm", "msb", "lsb"
- frame-master : Indicates dai-link frame master.
phandle to a cpu or codec subnode.
- bitclock-master : Indicates dai-link bit clock master.
phandle to a cpu or codec subnode.
- bitclock-inversion : bool property. Add this if the
dai-link uses bit clock inversion.
- frame-inversion : bool property. Add this if the
dai-link uses frame clock inversion.
- convert-rate : platform specified sampling rate convert
- convert-channels : platform specified converted channel size (2 - 8 ch)
- audio-prefix : see audio-routing
- audio-routing : A list of the connections between audio components.
Each entry is a pair of strings, the first being the connection's sink,
the second being the connection's source. Valid names for sources.
use audio-prefix if some components is using same sink/sources naming.
it can be used if compatible was "renesas,rsrc-card";
Required CPU/CODEC subnodes properties:
- sound-dai : phandle and port of CPU/CODEC
Optional CPU/CODEC subnodes properties:
- clocks / system-clock-frequency : specify subnode's clock if needed.
it can be specified via "clocks" if system has
clock node (= common clock), or "system-clock-frequency"
(if system doens't support common clock)
If a clock is specified, it is
enabled with clk_prepare_enable()
in dai startup() and disabled with
clk_disable_unprepare() in dai
shutdown().
Example
sound {
compatible = "renesas,rsrc-card,lager";
card-name = "rsnd-ak4643";
format = "left_j";
bitclock-master = <&sndcodec>;
frame-master = <&sndcodec>;
sndcpu: cpu {
sound-dai = <&rcar_sound>;
};
sndcodec: codec {
sound-dai = <&ak4643>;
system-clock-frequency = <11289600>;
};
};

110
Documentation/devicetree/bindings/sound/simple-scu-card.txt Normal file
View file

@ -0,0 +1,110 @@
ASoC simple SCU Sound Card
Simple-Card specifies audio DAI connections of SoC <-> codec.
Required properties:
- compatible : "simple-scu-audio-card"
"renesas,rsrc-card"
Optional properties:
- simple-audio-card,name : User specified audio sound card name, one string
property.
- simple-audio-card,cpu : CPU sub-node
- simple-audio-card,codec : CODEC sub-node
Optional subnode properties:
- simple-audio-card,format : CPU/CODEC common audio format.
"i2s", "right_j", "left_j" , "dsp_a"
"dsp_b", "ac97", "pdm", "msb", "lsb"
- simple-audio-card,frame-master : Indicates dai-link frame master.
phandle to a cpu or codec subnode.
- simple-audio-card,bitclock-master : Indicates dai-link bit clock master.
phandle to a cpu or codec subnode.
- simple-audio-card,bitclock-inversion : bool property. Add this if the
dai-link uses bit clock inversion.
- simple-audio-card,frame-inversion : bool property. Add this if the
dai-link uses frame clock inversion.
- simple-audio-card,convert-rate : platform specified sampling rate convert
- simple-audio-card,convert-channels : platform specified converted channel size (2 - 8 ch)
- simple-audio-card,prefix : see audio-routing
- simple-audio-card,routing : A list of the connections between audio components.
Each entry is a pair of strings, the first being the connection's sink,
the second being the connection's source. Valid names for sources.
use audio-prefix if some components is using same sink/sources naming.
it can be used if compatible was "renesas,rsrc-card";
Required CPU/CODEC subnodes properties:
- sound-dai : phandle and port of CPU/CODEC
Optional CPU/CODEC subnodes properties:
- clocks / system-clock-frequency : specify subnode's clock if needed.
it can be specified via "clocks" if system has
clock node (= common clock), or "system-clock-frequency"
(if system doens't support common clock)
If a clock is specified, it is
enabled with clk_prepare_enable()
in dai startup() and disabled with
clk_disable_unprepare() in dai
shutdown().
Example 1. Sampling Rate Covert
sound {
compatible = "simple-scu-audio-card";
simple-audio-card,name = "rsnd-ak4643";
simple-audio-card,format = "left_j";
simple-audio-card,format = "left_j";
simple-audio-card,bitclock-master = <&sndcodec>;
simple-audio-card,frame-master = <&sndcodec>;
simple-audio-card,convert-rate = <48000>; /* see audio_clk_a */
simple-audio-card,prefix = "ak4642";
simple-audio-card,routing = "ak4642 Playback", "DAI0 Playback",
"DAI0 Capture", "ak4642 Capture";
sndcpu: simple-audio-card,cpu {
sound-dai = <&rcar_sound>;
};
sndcodec: simple-audio-card,codec {
sound-dai = <&ak4643>;
system-clock-frequency = <11289600>;
};
};
Example 2. 2 CPU 1 Codec
sound {
compatible = "renesas,rsrc-card";
card-name = "rsnd-ak4643";
format = "left_j";
bitclock-master = <&dpcmcpu>;
frame-master = <&dpcmcpu>;
convert-rate = <48000>; /* see audio_clk_a */
audio-prefix = "ak4642";
audio-routing = "ak4642 Playback", "DAI0 Playback",
"ak4642 Playback", "DAI1 Playback";
dpcmcpu: cpu@0 {
sound-dai = <&rcar_sound 0>;
};
cpu@1 {
sound-dai = <&rcar_sound 1>;
};
codec {
sound-dai = <&ak4643>;
clocks = <&audio_clock>;
};
};

34
include/sound/simple_card_utils.h
View file

@ -33,4 +33,38 @@ int asoc_simple_card_set_dailink_name(struct device *dev,
int asoc_simple_card_parse_card_name(struct snd_soc_card *card,
char *prefix);
#define asoc_simple_card_parse_clk_cpu(node, dai_link, simple_dai) \
asoc_simple_card_parse_clk(node, dai_link->cpu_of_node, simple_dai)
#define asoc_simple_card_parse_clk_codec(node, dai_link, simple_dai) \
asoc_simple_card_parse_clk(node, dai_link->codec_of_node, simple_dai)
int asoc_simple_card_parse_clk(struct device_node *node,
struct device_node *dai_of_node,
struct asoc_simple_dai *simple_dai);
#define asoc_simple_card_parse_cpu(node, dai_link, \
list_name, cells_name, is_single_link) \
asoc_simple_card_parse_dai(node, &dai_link->cpu_of_node, \
&dai_link->cpu_dai_name, list_name, cells_name, is_single_link)
#define asoc_simple_card_parse_codec(node, dai_link, list_name, cells_name) \
asoc_simple_card_parse_dai(node, &dai_link->codec_of_node, \
&dai_link->codec_dai_name, list_name, cells_name, NULL)
#define asoc_simple_card_parse_platform(node, dai_link, list_name, cells_name) \
asoc_simple_card_parse_dai(node, &dai_link->platform_of_node, \
NULL, list_name, cells_name, NULL)
int asoc_simple_card_parse_dai(struct device_node *node,
struct device_node **endpoint_np,
const char **dai_name,
const char *list_name,
const char *cells_name,
int *is_single_links);
int asoc_simple_card_init_dai(struct snd_soc_dai *dai,
struct asoc_simple_dai *simple_dai);
int asoc_simple_card_canonicalize_dailink(struct snd_soc_dai_link *dai_link);
void asoc_simple_card_canonicalize_cpu(struct snd_soc_dai_link *dai_link,
int is_single_links);
int asoc_simple_card_clean_reference(struct snd_soc_card *card);
#endif /* __SIMPLE_CARD_CORE_H */

8
sound/soc/generic/Kconfig
View file

@ -6,3 +6,11 @@ config SND_SIMPLE_CARD
select SND_SIMPLE_CARD_UTILS
help
This option enables generic simple sound card support
config SND_SIMPLE_SCU_CARD
tristate "ASoC Simple SCU sound card support"
depends on OF
select SND_SIMPLE_CARD_UTILS
help
This option enables generic simple SCU sound card support.
It supports DPCM of multi CPU single Codec system.

2
sound/soc/generic/Makefile
View file

@ -1,5 +1,7 @@
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
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

141
sound/soc/generic/simple-card-utils.c
View file

@ -7,6 +7,7 @@
* 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/module.h>
#include <linux/of.h>
#include <sound/simple_card_utils.h>
@ -97,6 +98,146 @@ int asoc_simple_card_parse_card_name(struct snd_soc_card *card,
}
EXPORT_SYMBOL_GPL(asoc_simple_card_parse_card_name);
int asoc_simple_card_parse_clk(struct device_node *node,
struct device_node *dai_of_node,
struct asoc_simple_dai *simple_dai)
{
struct clk *clk;
u32 val;
/*
* Parse dai->sysclk come from "clocks = <&xxx>"
* (if system has common clock)
* or "system-clock-frequency = <xxx>"
* or device's module clock.
*/
clk = of_clk_get(node, 0);
if (!IS_ERR(clk)) {
simple_dai->sysclk = clk_get_rate(clk);
simple_dai->clk = clk;
} else if (!of_property_read_u32(node, "system-clock-frequency", &val)) {
simple_dai->sysclk = val;
} else {
clk = of_clk_get(dai_of_node, 0);
if (!IS_ERR(clk))
simple_dai->sysclk = clk_get_rate(clk);
}
return 0;
}
EXPORT_SYMBOL_GPL(asoc_simple_card_parse_clk);
int asoc_simple_card_parse_dai(struct device_node *node,
struct device_node **dai_of_node,
const char **dai_name,
const char *list_name,
const char *cells_name,
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, list_name, cells_name, 0, &args);
if (ret)
return ret;
/* Get dai->name */
if (dai_name) {
ret = snd_soc_of_get_dai_name(node, dai_name);
if (ret < 0)
return ret;
}
*dai_of_node = args.np;
if (is_single_link)
*is_single_link = !args.args_count;
return 0;
}
EXPORT_SYMBOL_GPL(asoc_simple_card_parse_dai);
int asoc_simple_card_init_dai(struct snd_soc_dai *dai,
struct asoc_simple_dai *simple_dai)
{
int ret;
if (simple_dai->sysclk) {
ret = snd_soc_dai_set_sysclk(dai, 0, simple_dai->sysclk, 0);
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;
}
EXPORT_SYMBOL_GPL(asoc_simple_card_init_dai);
int asoc_simple_card_canonicalize_dailink(struct snd_soc_dai_link *dai_link)
{
if (!dai_link->cpu_dai_name || !dai_link->codec_dai_name)
return -EINVAL;
/* Assumes platform == cpu */
if (!dai_link->platform_of_node)
dai_link->platform_of_node = dai_link->cpu_of_node;
return 0;
}
EXPORT_SYMBOL_GPL(asoc_simple_card_canonicalize_dailink);
void asoc_simple_card_canonicalize_cpu(struct snd_soc_dai_link *dai_link,
int is_single_links)
{
/*
* In soc_bind_dai_link() will check cpu name after
* of_node matching if dai_link has cpu_dai_name.
* but, it will never match if name was created by
* fmt_single_name() remove cpu_dai_name if cpu_args
* was 0. See:
* fmt_single_name()
* fmt_multiple_name()
*/
if (is_single_links)
dai_link->cpu_dai_name = NULL;
}
EXPORT_SYMBOL_GPL(asoc_simple_card_canonicalize_cpu);
int asoc_simple_card_clean_reference(struct snd_soc_card *card)
{
struct snd_soc_dai_link *dai_link;
int num_links;
for (num_links = 0, dai_link = card->dai_link;
num_links < card->num_links;
num_links++, dai_link++) {
of_node_put(dai_link->cpu_of_node);
of_node_put(dai_link->codec_of_node);
}
return 0;
}
EXPORT_SYMBOL_GPL(asoc_simple_card_clean_reference);
/* Module information */
MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
MODULE_DESCRIPTION("ALSA SoC Simple Card Utils");

190
sound/soc/generic/simple-card.c
View file

@ -44,6 +44,8 @@ struct simple_card_data {
#define simple_priv_to_link(priv, i) ((priv)->snd_card.dai_link + i)
#define simple_priv_to_props(priv, i) ((priv)->dai_props + i)
#define DAI "sound-dai"
#define CELL "#sound-dai-cells"
#define PREFIX "simple-audio-card,"
#define asoc_simple_card_init_hp(card, sjack, prefix)\
@ -177,51 +179,19 @@ static struct snd_soc_ops asoc_simple_card_ops = {
.hw_params = asoc_simple_card_hw_params,
};
static int __asoc_simple_card_dai_init(struct snd_soc_dai *dai,
struct asoc_simple_dai *set)
{
int ret;
if (set->sysclk) {
ret = snd_soc_dai_set_sysclk(dai, 0, set->sysclk, 0);
if (ret && ret != -ENOTSUPP) {
dev_err(dai->dev, "simple-card: set_sysclk error\n");
goto err;
}
}
if (set->slots) {
ret = snd_soc_dai_set_tdm_slot(dai,
set->tx_slot_mask,
set->rx_slot_mask,
set->slots,
set->slot_width);
if (ret && ret != -ENOTSUPP) {
dev_err(dai->dev, "simple-card: set_tdm_slot error\n");
goto err;
}
}
ret = 0;
err:
return ret;
}
static int asoc_simple_card_dai_init(struct snd_soc_pcm_runtime *rtd)
{
struct simple_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 simple_dai_props *dai_props;
struct simple_dai_props *dai_props = &priv->dai_props[rtd->num];
int ret;
dai_props = &priv->dai_props[rtd->num];
ret = __asoc_simple_card_dai_init(codec, &dai_props->codec_dai);
ret = asoc_simple_card_init_dai(codec, &dai_props->codec_dai);
if (ret < 0)
return ret;
ret = __asoc_simple_card_dai_init(cpu, &dai_props->cpu_dai);
ret = asoc_simple_card_init_dai(cpu, &dai_props->cpu_dai);
if (ret < 0)
return ret;
@ -236,78 +206,6 @@ static int asoc_simple_card_dai_init(struct snd_soc_pcm_runtime *rtd)
return 0;
}
static int
asoc_simple_card_sub_parse_of(struct device_node *np,
struct asoc_simple_dai *dai,
struct device_node **p_node,
const char **name,
int *args_count)
{
struct of_phandle_args args;
struct clk *clk;
u32 val;
int ret;
if (!np)
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(np, "sound-dai",
"#sound-dai-cells", 0, &args);
if (ret)
return ret;
*p_node = args.np;
if (args_count)
*args_count = args.args_count;
/* Get dai->name */
if (name) {
ret = snd_soc_of_get_dai_name(np, name);
if (ret < 0)
return ret;
}
if (!dai)
return 0;
/* Parse TDM slot */
ret = snd_soc_of_parse_tdm_slot(np, &dai->tx_slot_mask,
&dai->rx_slot_mask,
&dai->slots, &dai->slot_width);
if (ret)
return ret;
/*
* Parse dai->sysclk come from "clocks = <&xxx>"
* (if system has common clock)
* or "system-clock-frequency = <xxx>"
* or device's module clock.
*/
if (of_property_read_bool(np, "clocks")) {
clk = of_clk_get(np, 0);
if (IS_ERR(clk)) {
ret = PTR_ERR(clk);
return ret;
}
dai->sysclk = clk_get_rate(clk);
dai->clk = clk;
} else if (!of_property_read_u32(np, "system-clock-frequency", &val)) {
dai->sysclk = val;
} else {
clk = of_clk_get(args.np, 0);
if (!IS_ERR(clk))
dai->sysclk = clk_get_rate(clk);
}
return 0;
}
static int asoc_simple_card_dai_link_of(struct device_node *node,
struct simple_card_data *priv,
int idx,
@ -316,12 +214,14 @@ static int asoc_simple_card_dai_link_of(struct device_node *node,
struct device *dev = simple_priv_to_dev(priv);
struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, idx);
struct simple_dai_props *dai_props = simple_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, cpu_args;
int ret, single_cpu;
u32 val;
/* For single DAI link & old style of DT node */
@ -351,33 +251,44 @@ static int asoc_simple_card_dai_link_of(struct device_node *node,
if (!of_property_read_u32(node, "mclk-fs", &val))
dai_props->mclk_fs = val;
ret = asoc_simple_card_sub_parse_of(cpu, &dai_props->cpu_dai,
&dai_link->cpu_of_node,
&dai_link->cpu_dai_name,
&cpu_args);
ret = asoc_simple_card_parse_cpu(cpu, dai_link,
DAI, CELL, &single_cpu);
if (ret < 0)
goto dai_link_of_err;
ret = asoc_simple_card_sub_parse_of(codec, &dai_props->codec_dai,
&dai_link->codec_of_node,
&dai_link->codec_dai_name, NULL);
ret = asoc_simple_card_parse_codec(codec, dai_link, DAI, CELL);
if (ret < 0)
goto dai_link_of_err;
ret = asoc_simple_card_sub_parse_of(plat, NULL,
&dai_link->platform_of_node,
NULL, NULL);
ret = asoc_simple_card_parse_platform(plat, dai_link, DAI, CELL);
if (ret < 0)
goto dai_link_of_err;
if (!dai_link->cpu_dai_name || !dai_link->codec_dai_name) {
ret = -EINVAL;
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);
if (ret < 0)
goto dai_link_of_err;
}
/* Assumes platform == cpu */
if (!dai_link->platform_of_node)
dai_link->platform_of_node = dai_link->cpu_of_node;
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;
ret = asoc_simple_card_parse_clk_cpu(cpu, dai_link, cpu_dai);
if (ret < 0)
goto dai_link_of_err;
ret = asoc_simple_card_parse_clk_codec(codec, 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",
@ -398,17 +309,7 @@ static int asoc_simple_card_dai_link_of(struct device_node *node,
dai_link->codec_dai_name,
dai_props->codec_dai.sysclk);
/*
* In soc_bind_dai_link() will check cpu name after
* of_node matching if dai_link has cpu_dai_name.
* but, it will never match if name was created by
* fmt_single_name() remove cpu_dai_name if cpu_args
* was 0. See:
* fmt_single_name()
* fmt_multiple_name()
*/
if (!cpu_args)
dai_link->cpu_dai_name = NULL;
asoc_simple_card_canonicalize_cpu(dai_link, single_cpu);
dai_link_of_err:
of_node_put(cpu);
@ -477,21 +378,6 @@ static int asoc_simple_card_parse_of(struct device_node *node,
return 0;
}
/* Decrease the reference count of the device nodes */
static int asoc_simple_card_unref(struct snd_soc_card *card)
{
struct snd_soc_dai_link *dai_link;
int num_links;
for (num_links = 0, dai_link = card->dai_link;
num_links < card->num_links;
num_links++, dai_link++) {
of_node_put(dai_link->cpu_of_node);
of_node_put(dai_link->codec_of_node);
}
return 0;
}
static int asoc_simple_card_probe(struct platform_device *pdev)
{
struct simple_card_data *priv;
@ -577,7 +463,7 @@ static int asoc_simple_card_probe(struct platform_device *pdev)
return ret;
err:
asoc_simple_card_unref(&priv->snd_card);
asoc_simple_card_clean_reference(&priv->snd_card);
return ret;
}
@ -589,7 +475,7 @@ static int asoc_simple_card_remove(struct platform_device *pdev)
asoc_simple_card_remove_jack(&priv->hp_jack);
asoc_simple_card_remove_jack(&priv->mic_jack);
return asoc_simple_card_unref(card);
return asoc_simple_card_clean_reference(card);
}
static const struct of_device_id asoc_simple_of_match[] = {

345
sound/soc/generic/simple-scu-card.c Normal file
View file

@ -0,0 +1,345 @@
/*
* ASoC simple SCU sound card support
*
* Copyright (C) 2015 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/module.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/string.h>
#include <sound/jack.h>
#include <sound/soc.h>
#include <sound/soc-dai.h>
#include <sound/simple_card_utils.h>
struct asoc_simple_card_priv {
struct snd_soc_card snd_card;
struct snd_soc_codec_conf codec_conf;
struct asoc_simple_dai *dai_props;
struct snd_soc_dai_link *dai_link;
u32 convert_rate;
u32 convert_channels;
};
#define simple_priv_to_dev(priv) ((priv)->snd_card.dev)
#define simple_priv_to_link(priv, i) ((priv)->snd_card.dai_link + (i))
#define simple_priv_to_props(priv, i) ((priv)->dai_props + (i))
#define DAI "sound-dai"
#define CELL "#sound-dai-cells"
#define PREFIX "simple-audio-card,"
static int asoc_simple_card_startup(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct asoc_simple_card_priv *priv = snd_soc_card_get_drvdata(rtd->card);
struct asoc_simple_dai *dai_props =
simple_priv_to_props(priv, rtd->num);
return clk_prepare_enable(dai_props->clk);
}
static void asoc_simple_card_shutdown(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct asoc_simple_card_priv *priv = snd_soc_card_get_drvdata(rtd->card);
struct asoc_simple_dai *dai_props =
simple_priv_to_props(priv, rtd->num);
clk_disable_unprepare(dai_props->clk);
}
static struct snd_soc_ops asoc_simple_card_ops = {
.startup = asoc_simple_card_startup,
.shutdown = asoc_simple_card_shutdown,
};
static int asoc_simple_card_dai_init(struct snd_soc_pcm_runtime *rtd)
{
struct asoc_simple_card_priv *priv = snd_soc_card_get_drvdata(rtd->card);
struct snd_soc_dai *dai;
struct snd_soc_dai_link *dai_link;
struct asoc_simple_dai *dai_props;
int num = rtd->num;
dai_link = simple_priv_to_link(priv, num);
dai_props = simple_priv_to_props(priv, num);
dai = dai_link->dynamic ?
rtd->cpu_dai :
rtd->codec_dai;
return asoc_simple_card_init_dai(dai, dai_props);
}
static int asoc_simple_card_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
struct snd_pcm_hw_params *params)
{
struct asoc_simple_card_priv *priv = snd_soc_card_get_drvdata(rtd->card);
struct snd_interval *rate = hw_param_interval(params,
SNDRV_PCM_HW_PARAM_RATE);
struct snd_interval *channels = hw_param_interval(params,
SNDRV_PCM_HW_PARAM_CHANNELS);
if (priv->convert_rate)
rate->min =
rate->max = priv->convert_rate;
if (priv->convert_channels)
channels->min =
channels->max = priv->convert_channels;
return 0;
}
static int asoc_simple_card_parse_links(struct device_node *np,
struct asoc_simple_card_priv *priv,
unsigned int daifmt,
int idx, bool is_fe)
{
struct device *dev = simple_priv_to_dev(priv);
struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, idx);
struct asoc_simple_dai *dai_props = simple_priv_to_props(priv, idx);
int ret;
if (is_fe) {
int is_single_links = 0;
/* BE is dummy */
dai_link->codec_of_node = NULL;
dai_link->codec_dai_name = "snd-soc-dummy-dai";
dai_link->codec_name = "snd-soc-dummy";
/* FE settings */
dai_link->dynamic = 1;
dai_link->dpcm_merged_format = 1;
ret = asoc_simple_card_parse_cpu(np, dai_link, DAI, CELL,
&is_single_links);
if (ret)
return ret;
ret = asoc_simple_card_parse_clk_cpu(np, dai_link, dai_props);
if (ret < 0)
return ret;
ret = asoc_simple_card_set_dailink_name(dev, dai_link,
"fe.%s",
dai_link->cpu_dai_name);
if (ret < 0)
return ret;
asoc_simple_card_canonicalize_cpu(dai_link, is_single_links);
} else {
/* FE is dummy */
dai_link->cpu_of_node = NULL;
dai_link->cpu_dai_name = "snd-soc-dummy-dai";
dai_link->cpu_name = "snd-soc-dummy";
/* BE settings */
dai_link->no_pcm = 1;
dai_link->be_hw_params_fixup = asoc_simple_card_be_hw_params_fixup;
ret = asoc_simple_card_parse_codec(np, dai_link, DAI, CELL);
if (ret < 0)
return ret;
ret = asoc_simple_card_parse_clk_codec(np, dai_link, dai_props);
if (ret < 0)
return ret;
ret = asoc_simple_card_set_dailink_name(dev, dai_link,
"be.%s",
dai_link->codec_dai_name);
if (ret < 0)
return ret;
snd_soc_of_parse_audio_prefix(&priv->snd_card,
&priv->codec_conf,
dai_link->codec_of_node,
PREFIX "prefix");
}
ret = snd_soc_of_parse_tdm_slot(np,
&dai_props->tx_slot_mask,
&dai_props->rx_slot_mask,
&dai_props->slots,
&dai_props->slot_width);
if (ret)
return ret;
ret = asoc_simple_card_canonicalize_dailink(dai_link);
if (ret < 0)
return ret;
dai_link->dai_fmt = daifmt;
dai_link->dpcm_playback = 1;
dai_link->dpcm_capture = 1;
dai_link->ops = &asoc_simple_card_ops;
dai_link->init = asoc_simple_card_dai_init;
dev_dbg(dev, "\t%s / %04x / %d\n",
dai_link->name,
dai_link->dai_fmt,
dai_props->sysclk);
return 0;
}
static int asoc_simple_card_dai_link_of(struct device_node *node,
struct asoc_simple_card_priv *priv)
{
struct device *dev = simple_priv_to_dev(priv);
struct device_node *np;
unsigned int daifmt = 0;
int ret, i;
bool is_fe;
/* find 1st codec */
np = of_get_child_by_name(node, PREFIX "codec");
if (!np)
return -ENODEV;
ret = asoc_simple_card_parse_daifmt(dev, node, np,
PREFIX, &daifmt);
if (ret < 0)
return ret;
i = 0;
for_each_child_of_node(node, np) {
is_fe = false;
if (strcmp(np->name, PREFIX "cpu") == 0)
is_fe = true;
ret = asoc_simple_card_parse_links(np, priv, daifmt, i, is_fe);
if (ret < 0)
return ret;
i++;
}
return 0;
}
static int asoc_simple_card_parse_of(struct device_node *node,
struct asoc_simple_card_priv *priv,
struct device *dev)
{
struct asoc_simple_dai *props;
struct snd_soc_dai_link *links;
int ret;
int num;
if (!node)
return -EINVAL;
num = of_get_child_count(node);
props = devm_kzalloc(dev, sizeof(*props) * num, GFP_KERNEL);
links = devm_kzalloc(dev, sizeof(*links) * num, GFP_KERNEL);
if (!props || !links)
return -ENOMEM;
priv->dai_props = props;
priv->dai_link = links;
/* 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;
priv->snd_card.codec_conf = &priv->codec_conf;
priv->snd_card.num_configs = 1;
ret = snd_soc_of_parse_audio_routing(&priv->snd_card, PREFIX "routing");
if (ret < 0)
return ret;
/* sampling rate convert */
of_property_read_u32(node, PREFIX "convert-rate", &priv->convert_rate);
/* channels transfer */
of_property_read_u32(node, PREFIX "convert-channels", &priv->convert_channels);
ret = asoc_simple_card_dai_link_of(node, priv);
if (ret < 0)
return ret;
ret = asoc_simple_card_parse_card_name(&priv->snd_card, PREFIX);
if (ret < 0)
return ret;
dev_dbg(dev, "New card: %s\n",
priv->snd_card.name ? priv->snd_card.name : "");
dev_dbg(dev, "convert_rate %d\n", priv->convert_rate);
dev_dbg(dev, "convert_channels %d\n", priv->convert_channels);
return 0;
}
static int asoc_simple_card_probe(struct platform_device *pdev)
{
struct asoc_simple_card_priv *priv;
struct device_node *np = pdev->dev.of_node;
struct device *dev = &pdev->dev;
int ret;
/* Allocate the private data */
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
ret = asoc_simple_card_parse_of(np, priv, dev);
if (ret < 0) {
if (ret != -EPROBE_DEFER)
dev_err(dev, "parse error %d\n", ret);
goto err;
}
snd_soc_card_set_drvdata(&priv->snd_card, priv);
ret = devm_snd_soc_register_card(&pdev->dev, &priv->snd_card);
if (ret >= 0)
return ret;
err:
asoc_simple_card_clean_reference(&priv->snd_card);
return ret;
}
static int asoc_simple_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_simple_of_match[] = {
{ .compatible = "renesas,rsrc-card", },
{ .compatible = "simple-scu-audio-card", },
{},
};
MODULE_DEVICE_TABLE(of, asoc_simple_of_match);
static struct platform_driver asoc_simple_card = {
.driver = {
.name = "simple-scu-audio-card",
.of_match_table = asoc_simple_of_match,
},
.probe = asoc_simple_card_probe,
.remove = asoc_simple_card_remove,
};
module_platform_driver(asoc_simple_card);
MODULE_ALIAS("platform:asoc-simple-scu-card");
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("ASoC Simple SCU Sound Card");
MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");

6
sound/soc/sh/Kconfig
View file

@ -42,12 +42,6 @@ config SND_SOC_RCAR
help
This option enables R-Car SRU/SCU/SSIU/SSI sound support
config SND_SOC_RSRC_CARD
tristate "Renesas Sampling Rate Convert Sound Card"
select SND_SIMPLE_CARD_UTILS
help
This option enables simple sound if you need sampling rate convert
##
## Boards
##

3
sound/soc/sh/rcar/Makefile
View file

@ -1,5 +1,2 @@
snd-soc-rcar-objs := core.o gen.o dma.o adg.o ssi.o ssiu.o src.o ctu.o mix.o dvc.o cmd.o
obj-$(CONFIG_SND_SOC_RCAR) += snd-soc-rcar.o
snd-soc-rsrc-card-objs := rsrc-card.o
obj-$(CONFIG_SND_SOC_RSRC_CARD) += snd-soc-rsrc-card.o

4
sound/soc/sh/rcar/core.c
View file

@ -110,6 +110,7 @@ MODULE_DEVICE_TABLE(of, rsnd_of_match);
/*
* rsnd_mod functions
*/
#ifdef DEBUG
void rsnd_mod_make_sure(struct rsnd_mod *mod, enum rsnd_mod_type type)
{
if (mod->type != type) {
@ -120,6 +121,7 @@ void rsnd_mod_make_sure(struct rsnd_mod *mod, enum rsnd_mod_type type)
rsnd_mod_name(mod), rsnd_mod_id(mod));
}
}
#endif
char *rsnd_mod_name(struct rsnd_mod *mod)
{
@ -574,6 +576,7 @@ static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd,
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
rsnd_dai_stream_init(io, substream);
ret = rsnd_dai_call(init, io, priv);
@ -590,6 +593,7 @@ static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd,
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
ret = rsnd_dai_call(irq, io, priv, 0);
ret |= rsnd_dai_call(stop, io, priv);

486
sound/soc/sh/rcar/rsrc-card.c
View file

@ -1,486 +0,0 @@
/*
* Renesas Sampling Rate Convert Sound Card for DPCM
*
* Copyright (C) 2015 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/module.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/string.h>
#include <sound/jack.h>
#include <sound/soc.h>
#include <sound/soc-dai.h>
#include <sound/simple_card_utils.h>
struct rsrc_card_of_data {
const char *prefix;
const struct snd_soc_dapm_route *routes;
int num_routes;
};
static const struct snd_soc_dapm_route routes_ssi0_ak4642[] = {
{"ak4642 Playback", NULL, "DAI0 Playback"},
{"DAI0 Capture", NULL, "ak4642 Capture"},
};
static const struct rsrc_card_of_data routes_of_ssi0_ak4642 = {
.prefix = "ak4642",
.routes = routes_ssi0_ak4642,
.num_routes = ARRAY_SIZE(routes_ssi0_ak4642),
};
static const struct of_device_id rsrc_card_of_match[] = {
{ .compatible = "renesas,rsrc-card,lager", .data = &routes_of_ssi0_ak4642 },
{ .compatible = "renesas,rsrc-card,koelsch", .data = &routes_of_ssi0_ak4642 },
{ .compatible = "renesas,rsrc-card", },
{},
};
MODULE_DEVICE_TABLE(of, rsrc_card_of_match);
#define IDX_CPU 0
#define IDX_CODEC 1
struct rsrc_card_priv {
struct snd_soc_card snd_card;
struct snd_soc_codec_conf codec_conf;
struct asoc_simple_dai *dai_props;
struct snd_soc_dai_link *dai_link;
u32 convert_rate;
u32 convert_channels;
};
#define rsrc_priv_to_dev(priv) ((priv)->snd_card.dev)
#define rsrc_priv_to_link(priv, i) ((priv)->snd_card.dai_link + (i))
#define rsrc_priv_to_props(priv, i) ((priv)->dai_props + (i))
static int rsrc_card_startup(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct rsrc_card_priv *priv = snd_soc_card_get_drvdata(rtd->card);
struct asoc_simple_dai *dai_props =
rsrc_priv_to_props(priv, rtd->num);
return clk_prepare_enable(dai_props->clk);
}
static void rsrc_card_shutdown(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct rsrc_card_priv *priv = snd_soc_card_get_drvdata(rtd->card);
struct asoc_simple_dai *dai_props =
rsrc_priv_to_props(priv, rtd->num);
clk_disable_unprepare(dai_props->clk);
}
static struct snd_soc_ops rsrc_card_ops = {
.startup = rsrc_card_startup,
.shutdown = rsrc_card_shutdown,
};
static int rsrc_card_dai_init(struct snd_soc_pcm_runtime *rtd)
{
struct rsrc_card_priv *priv = snd_soc_card_get_drvdata(rtd->card);
struct snd_soc_dai *dai;
struct snd_soc_dai_link *dai_link;
struct asoc_simple_dai *dai_props;
int num = rtd->num;
int ret;
dai_link = rsrc_priv_to_link(priv, num);
dai_props = rsrc_priv_to_props(priv, num);
dai = dai_link->dynamic ?
rtd->cpu_dai :
rtd->codec_dai;
if (dai_props->sysclk) {
ret = snd_soc_dai_set_sysclk(dai, 0, dai_props->sysclk, 0);
if (ret && ret != -ENOTSUPP) {
dev_err(dai->dev, "set_sysclk error\n");
goto err;
}
}
if (dai_props->slots) {
ret = snd_soc_dai_set_tdm_slot(dai,
dai_props->tx_slot_mask,
dai_props->rx_slot_mask,
dai_props->slots,
dai_props->slot_width);
if (ret && ret != -ENOTSUPP) {
dev_err(dai->dev, "set_tdm_slot error\n");
goto err;
}
}
ret = 0;
err:
return ret;
}
static int rsrc_card_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
struct snd_pcm_hw_params *params)
{
struct rsrc_card_priv *priv = snd_soc_card_get_drvdata(rtd->card);
struct snd_interval *rate = hw_param_interval(params,
SNDRV_PCM_HW_PARAM_RATE);
struct snd_interval *channels = hw_param_interval(params,
SNDRV_PCM_HW_PARAM_CHANNELS);
if (priv->convert_rate)
rate->min =
rate->max = priv->convert_rate;
if (priv->convert_channels)
channels->min =
channels->max = priv->convert_channels;
return 0;
}
static int rsrc_card_parse_links(struct device_node *np,
struct rsrc_card_priv *priv,
int idx, bool is_fe)
{
struct device *dev = rsrc_priv_to_dev(priv);
struct snd_soc_dai_link *dai_link = rsrc_priv_to_link(priv, idx);
struct asoc_simple_dai *dai_props = rsrc_priv_to_props(priv, idx);
struct of_phandle_args args;
int ret;
/*
* 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(np, "sound-dai",
"#sound-dai-cells", 0, &args);
if (ret)
return ret;
/* Parse TDM slot */
ret = snd_soc_of_parse_tdm_slot(np,
&dai_props->tx_slot_mask,
&dai_props->rx_slot_mask,
&dai_props->slots,
&dai_props->slot_width);
if (ret)
return ret;
if (is_fe) {
/* BE is dummy */
dai_link->codec_of_node = NULL;
dai_link->codec_dai_name = "snd-soc-dummy-dai";
dai_link->codec_name = "snd-soc-dummy";
/* FE settings */
dai_link->dynamic = 1;
dai_link->dpcm_merged_format = 1;
dai_link->cpu_of_node = args.np;
ret = snd_soc_of_get_dai_name(np, &dai_link->cpu_dai_name);
if (ret < 0)
return ret;
ret = asoc_simple_card_set_dailink_name(dev, dai_link,
"fe.%s",
dai_link->cpu_dai_name);
if (ret < 0)
return ret;
/*
* In soc_bind_dai_link() will check cpu name after
* of_node matching if dai_link has cpu_dai_name.
* but, it will never match if name was created by
* fmt_single_name() remove cpu_dai_name if cpu_args
* was 0. See:
* fmt_single_name()
* fmt_multiple_name()
*/
if (!args.args_count)
dai_link->cpu_dai_name = NULL;
} else {
const struct rsrc_card_of_data *of_data;
of_data = of_device_get_match_data(dev);
/* FE is dummy */
dai_link->cpu_of_node = NULL;
dai_link->cpu_dai_name = "snd-soc-dummy-dai";
dai_link->cpu_name = "snd-soc-dummy";
/* BE settings */
dai_link->no_pcm = 1;
dai_link->be_hw_params_fixup = rsrc_card_be_hw_params_fixup;
dai_link->codec_of_node = args.np;
ret = snd_soc_of_get_dai_name(np, &dai_link->codec_dai_name);
if (ret < 0)
return ret;
ret = asoc_simple_card_set_dailink_name(dev, dai_link,
"be.%s",
dai_link->codec_dai_name);
if (ret < 0)
return ret;
/* additional name prefix */
if (of_data) {
priv->codec_conf.of_node = dai_link->codec_of_node;
priv->codec_conf.name_prefix = of_data->prefix;
} else {
snd_soc_of_parse_audio_prefix(&priv->snd_card,
&priv->codec_conf,
dai_link->codec_of_node,
"audio-prefix");
}
}
/* Simple Card assumes platform == cpu */
dai_link->platform_of_node = dai_link->cpu_of_node;
dai_link->dpcm_playback = 1;
dai_link->dpcm_capture = 1;
dai_link->ops = &rsrc_card_ops;
dai_link->init = rsrc_card_dai_init;
return 0;
}
static int rsrc_card_parse_clk(struct device_node *np,
struct rsrc_card_priv *priv,
int idx, bool is_fe)
{
struct snd_soc_dai_link *dai_link = rsrc_priv_to_link(priv, idx);
struct asoc_simple_dai *dai_props = rsrc_priv_to_props(priv, idx);
struct clk *clk;
struct device_node *of_np = is_fe ? dai_link->cpu_of_node :
dai_link->codec_of_node;
u32 val;
/*
* Parse dai->sysclk come from "clocks = <&xxx>"
* (if system has common clock)
* or "system-clock-frequency = <xxx>"
* or device's module clock.
*/
if (of_property_read_bool(np, "clocks")) {
clk = of_clk_get(np, 0);
if (IS_ERR(clk))
return PTR_ERR(clk);
dai_props->sysclk = clk_get_rate(clk);
dai_props->clk = clk;
} else if (!of_property_read_u32(np, "system-clock-frequency", &val)) {
dai_props->sysclk = val;
} else {
clk = of_clk_get(of_np, 0);
if (!IS_ERR(clk))
dai_props->sysclk = clk_get_rate(clk);
}
return 0;
}
static int rsrc_card_dai_sub_link_of(struct device_node *node,
struct device_node *np,
struct rsrc_card_priv *priv,
int idx, bool is_fe)
{
struct device *dev = rsrc_priv_to_dev(priv);
struct snd_soc_dai_link *dai_link = rsrc_priv_to_link(priv, idx);
struct asoc_simple_dai *dai_props = rsrc_priv_to_props(priv, idx);
int ret;
ret = rsrc_card_parse_links(np, priv, idx, is_fe);
if (ret < 0)
return ret;
ret = rsrc_card_parse_clk(np, priv, idx, is_fe);
if (ret < 0)
return ret;
dev_dbg(dev, "\t%s / %04x / %d\n",
dai_link->name,
dai_link->dai_fmt,
dai_props->sysclk);
return ret;
}
static int rsrc_card_dai_link_of(struct device_node *node,
struct rsrc_card_priv *priv)
{
struct device *dev = rsrc_priv_to_dev(priv);
struct snd_soc_dai_link *dai_link;
struct device_node *np;
unsigned int daifmt = 0;
int ret, i;
bool is_fe;
/* find 1st codec */
i = 0;
for_each_child_of_node(node, np) {
dai_link = rsrc_priv_to_link(priv, i);
if (strcmp(np->name, "codec") == 0) {
ret = asoc_simple_card_parse_daifmt(dev, node, np,
NULL, &daifmt);
if (ret < 0)
return ret;
break;
}
i++;
}
i = 0;
for_each_child_of_node(node, np) {
dai_link = rsrc_priv_to_link(priv, i);
dai_link->dai_fmt = daifmt;
is_fe = false;
if (strcmp(np->name, "cpu") == 0)
is_fe = true;
ret = rsrc_card_dai_sub_link_of(node, np, priv, i, is_fe);
if (ret < 0)
return ret;
i++;
}
return 0;
}
static int rsrc_card_parse_of(struct device_node *node,
struct rsrc_card_priv *priv,
struct device *dev)
{
const struct rsrc_card_of_data *of_data = of_device_get_match_data(dev);
struct asoc_simple_dai *props;
struct snd_soc_dai_link *links;
int ret;
int num;
if (!node)
return -EINVAL;
num = of_get_child_count(node);
props = devm_kzalloc(dev, sizeof(*props) * num, GFP_KERNEL);
links = devm_kzalloc(dev, sizeof(*links) * num, GFP_KERNEL);
if (!props || !links)
return -ENOMEM;
priv->dai_props = props;
priv->dai_link = links;
/* 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;
priv->snd_card.codec_conf = &priv->codec_conf;
priv->snd_card.num_configs = 1;
if (of_data) {
priv->snd_card.of_dapm_routes = of_data->routes;
priv->snd_card.num_of_dapm_routes = of_data->num_routes;
} else {
snd_soc_of_parse_audio_routing(&priv->snd_card,
"audio-routing");
}
/* sampling rate convert */
of_property_read_u32(node, "convert-rate", &priv->convert_rate);
/* channels transfer */
of_property_read_u32(node, "convert-channels", &priv->convert_channels);
dev_dbg(dev, "New rsrc-audio-card: %s\n",
priv->snd_card.name ? priv->snd_card.name : "");
dev_dbg(dev, "SRC : convert_rate %d\n", priv->convert_rate);
dev_dbg(dev, "CTU : convert_channels %d\n", priv->convert_channels);
ret = rsrc_card_dai_link_of(node, priv);
if (ret < 0)
return ret;
ret = asoc_simple_card_parse_card_name(&priv->snd_card, "card-");
if (ret < 0)
return ret;
return 0;
}
/* Decrease the reference count of the device nodes */
static int rsrc_card_unref(struct snd_soc_card *card)
{
struct snd_soc_dai_link *dai_link;
int num_links;
for (num_links = 0, dai_link = card->dai_link;
num_links < card->num_links;
num_links++, dai_link++) {
of_node_put(dai_link->cpu_of_node);
of_node_put(dai_link->codec_of_node);
}
return 0;
}
static int rsrc_card_probe(struct platform_device *pdev)
{
struct rsrc_card_priv *priv;
struct device_node *np = pdev->dev.of_node;
struct device *dev = &pdev->dev;
int ret;
/* Allocate the private data */
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
ret = rsrc_card_parse_of(np, priv, dev);
if (ret < 0) {
if (ret != -EPROBE_DEFER)
dev_err(dev, "parse error %d\n", ret);
goto err;
}
snd_soc_card_set_drvdata(&priv->snd_card, priv);
ret = devm_snd_soc_register_card(&pdev->dev, &priv->snd_card);
if (ret >= 0)
return ret;
err:
rsrc_card_unref(&priv->snd_card);
return ret;
}
static int rsrc_card_remove(struct platform_device *pdev)
{
struct snd_soc_card *card = platform_get_drvdata(pdev);
return rsrc_card_unref(card);
}
static struct platform_driver rsrc_card = {
.driver = {
.name = "renesas-src-audio-card",
.of_match_table = rsrc_card_of_match,
},
.probe = rsrc_card_probe,
.remove = rsrc_card_remove,
};
module_platform_driver(rsrc_card);
MODULE_ALIAS("platform:renesas-src-audio-card");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Renesas Sampling Rate Convert Sound Card");
MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");