// SPDX-License-Identifier: GPL-2.0
//
// simple-card-utils.c
//
// Copyright (c) 2016 Kuninori Morimoto <[email protected]>
#include <dt-bindings/sound/audio-graph.h>
#include <linux/cleanup.h>
#include <linux/clk.h>
#include <linux/gpio/consumer.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_graph.h>
#include <sound/jack.h>
#include <sound/pcm_params.h>
#include <sound/simple_card_utils.h>
int simple_util_get_sample_fmt(struct simple_util_data *data)
{
int i;
int val = -EINVAL;
struct {
char *fmt;
u32 val;
} of_sample_fmt_table[] = {
{ "s8", SNDRV_PCM_FORMAT_S8},
{ "s16_le", SNDRV_PCM_FORMAT_S16_LE},
{ "s24_le", SNDRV_PCM_FORMAT_S24_LE},
{ "s24_3le", SNDRV_PCM_FORMAT_S24_3LE},
{ "s32_le", SNDRV_PCM_FORMAT_S32_LE},
};
for (i = 0; i < ARRAY_SIZE(of_sample_fmt_table); i++) {
if (!strcmp(data->convert_sample_format,
of_sample_fmt_table[i].fmt)) {
val = of_sample_fmt_table[i].val;
break;
}
}
return val;
}
EXPORT_SYMBOL_GPL(simple_util_get_sample_fmt);
static void simple_fixup_sample_fmt(struct simple_util_data *data,
struct snd_pcm_hw_params *params)
{
int val;
struct snd_mask *mask = hw_param_mask(params,
SNDRV_PCM_HW_PARAM_FORMAT);
val = simple_util_get_sample_fmt(data);
if (val >= 0) {
snd_mask_none(mask);
snd_mask_set(mask, val);
}
}
void simple_util_parse_convert(struct device_node *np,
char *prefix,
struct simple_util_data *data)
{
char prop[128];
if (!np)
return;
if (!prefix)
prefix = "";
/* sampling rate convert */
snprintf(prop, sizeof(prop), "%s%s", prefix, "convert-rate");
of_property_read_u32(np, prop, &data->convert_rate);
/* channels transfer */
snprintf(prop, sizeof(prop), "%s%s", prefix, "convert-channels");
of_property_read_u32(np, prop, &data->convert_channels);
/* convert sample format */
snprintf(prop, sizeof(prop), "%s%s", prefix, "convert-sample-format");
of_property_read_string(np, prop, &data->convert_sample_format);
}
EXPORT_SYMBOL_GPL(simple_util_parse_convert);
/**
* simple_util_is_convert_required() - Query if HW param conversion was requested
* @data: Link data.
*
* Returns true if any HW param conversion was requested for this DAI link with
* any "convert-xxx" properties.
*/
bool simple_util_is_convert_required(const struct simple_util_data *data)
{
return data->convert_rate ||
data->convert_channels ||
data->convert_sample_format;
}
EXPORT_SYMBOL_GPL(simple_util_is_convert_required);
int simple_util_parse_daifmt(struct device *dev,
struct device_node *node,
struct device_node *codec,
char *prefix,
unsigned int *retfmt)
{
struct device_node *bitclkmaster = NULL;
struct device_node *framemaster = NULL;
unsigned int daifmt;
daifmt = snd_soc_daifmt_parse_format(node, prefix);
snd_soc_daifmt_parse_clock_provider_as_phandle(node, prefix, &bitclkmaster, &framemaster);
if (!bitclkmaster && !framemaster) {
/*
* No dai-link level and master setting was not found from
* sound node level, revert back to legacy DT parsing and
* take the settings from codec node.
*/
dev_dbg(dev, "Revert to legacy daifmt parsing\n");
daifmt |= snd_soc_daifmt_parse_clock_provider_as_flag(codec, NULL);
} else {
daifmt |= snd_soc_daifmt_clock_provider_from_bitmap(
((codec == bitclkmaster) << 4) | (codec == framemaster));
}
of_node_put(bitclkmaster);
of_node_put(framemaster);
*retfmt = daifmt;
return 0;
}
EXPORT_SYMBOL_GPL(simple_util_parse_daifmt);
int simple_util_parse_tdm_width_map(struct device *dev, struct device_node *np,
struct simple_util_dai *dai)
{
int n, i, ret;
u32 *p;
if (!of_property_read_bool(np, "dai-tdm-slot-width-map"))
return 0;
n = of_property_count_elems_of_size(np, "dai-tdm-slot-width-map", sizeof(u32));
if (n % 3) {
dev_err(dev, "Invalid number of cells for dai-tdm-slot-width-map\n");
return -EINVAL;
}
dai->tdm_width_map = devm_kcalloc(dev, n, sizeof(*dai->tdm_width_map), GFP_KERNEL);
if (!dai->tdm_width_map)
return -ENOMEM;
u32 *array_values __free(kfree) = kcalloc(n, sizeof(*array_values),
GFP_KERNEL);
if (!array_values)
return -ENOMEM;
ret = of_property_read_u32_array(np, "dai-tdm-slot-width-map", array_values, n);
if (ret < 0) {
dev_err(dev, "Could not read dai-tdm-slot-width-map: %d\n", ret);
return ret;
}
p = array_values;
for (i = 0; i < n / 3; ++i) {
dai->tdm_width_map[i].sample_bits = *p++;
dai->tdm_width_map[i].slot_width = *p++;
dai->tdm_width_map[i].slot_count = *p++;
}
dai->n_tdm_widths = i;
return 0;
}
EXPORT_SYMBOL_GPL(simple_util_parse_tdm_width_map);
int simple_util_set_dailink_name(struct device *dev,
struct snd_soc_dai_link *dai_link,
const char *fmt, ...)
{
va_list ap;
char *name = NULL;
int ret = -ENOMEM;
va_start(ap, fmt);
name = devm_kvasprintf(dev, GFP_KERNEL, fmt, ap);
va_end(ap);
if (name) {
ret = 0;
dai_link->name = name;
dai_link->stream_name = name;
}
return ret;
}
EXPORT_SYMBOL_GPL(simple_util_set_dailink_name);
int simple_util_parse_card_name(struct snd_soc_card *card,
char *prefix)
{
int ret;
if (!prefix)
prefix = "";
/* Parse the card name from DT */
ret = snd_soc_of_parse_card_name(card, "label");
if (ret < 0 || !card->name) {
char prop[128];
snprintf(prop, sizeof(prop), "%sname", prefix);
ret = snd_soc_of_parse_card_name(card, prop);
if (ret < 0)
return ret;
}
if (!card->name && card->dai_link)
card->name = card->dai_link->name;
return 0;
}
EXPORT_SYMBOL_GPL(simple_util_parse_card_name);
static int simple_clk_enable(struct simple_util_dai *dai)
{
if (dai)
return clk_prepare_enable(dai->clk);
return 0;
}
static void simple_clk_disable(struct simple_util_dai *dai)
{
if (dai)
clk_disable_unprepare(dai->clk);
}
int simple_util_parse_clk(struct device *dev,
struct device_node *node,
struct simple_util_dai *simple_dai,
struct snd_soc_dai_link_component *dlc)
{
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 = devm_get_clk_from_child(dev, node, NULL);
simple_dai->clk_fixed = of_property_read_bool(
node, "system-clock-fixed");
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;
simple_dai->clk_fixed = true;
} else {
clk = devm_get_clk_from_child(dev, dlc->of_node, NULL);
if (!IS_ERR(clk))
simple_dai->sysclk = clk_get_rate(clk);
}
if (of_property_read_bool(node, "system-clock-direction-out"))
simple_dai->clk_direction = SND_SOC_CLOCK_OUT;
return 0;
}
EXPORT_SYMBOL_GPL(simple_util_parse_clk);
static int simple_check_fixed_sysclk(struct device *dev,
struct simple_util_dai *dai,
unsigned int *fixed_sysclk)
{
if (dai->clk_fixed) {
if (*fixed_sysclk && *fixed_sysclk != dai->sysclk) {
dev_err(dev, "inconsistent fixed sysclk rates (%u vs %u)\n",
*fixed_sysclk, dai->sysclk);
return -EINVAL;
}
*fixed_sysclk = dai->sysclk;
}
return 0;
}
int simple_util_startup(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
struct simple_util_priv *priv = snd_soc_card_get_drvdata(rtd->card);
struct simple_dai_props *props = simple_priv_to_props(priv, rtd->num);
struct simple_util_dai *dai;
unsigned int fixed_sysclk = 0;
int i1, i2, i;
int ret;
for_each_prop_dai_cpu(props, i1, dai) {
ret = simple_clk_enable(dai);
if (ret)
goto cpu_err;
ret = simple_check_fixed_sysclk(rtd->dev, dai, &fixed_sysclk);
if (ret)
goto cpu_err;
}
for_each_prop_dai_codec(props, i2, dai) {
ret = simple_clk_enable(dai);
if (ret)
goto codec_err;
ret = simple_check_fixed_sysclk(rtd->dev, dai, &fixed_sysclk);
if (ret)
goto codec_err;
}
if (fixed_sysclk && props->mclk_fs) {
unsigned int fixed_rate = fixed_sysclk / props->mclk_fs;
if (fixed_sysclk % props->mclk_fs) {
dev_err(rtd->dev, "fixed sysclk %u not divisible by mclk_fs %u\n",
fixed_sysclk, props->mclk_fs);
ret = -EINVAL;
goto codec_err;
}
ret = snd_pcm_hw_constraint_minmax(substream->runtime, SNDRV_PCM_HW_PARAM_RATE,
fixed_rate, fixed_rate);
if (ret < 0)
goto codec_err;
}
return 0;
codec_err:
for_each_prop_dai_codec(props, i, dai) {
if (i >= i2)
break;
simple_clk_disable(dai);
}
cpu_err:
for_each_prop_dai_cpu(props, i, dai) {
if (i >= i1)
break;
simple_clk_disable(dai);
}
return ret;
}
EXPORT_SYMBOL_GPL(simple_util_startup);
void simple_util_shutdown(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
struct simple_util_priv *priv = snd_soc_card_get_drvdata(rtd->card);
struct simple_dai_props *props = simple_priv_to_props(priv, rtd->num);
struct simple_util_dai *dai;
int i;
for_each_prop_dai_cpu(props, i, dai) {
struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, i);
if (props->mclk_fs && !dai->clk_fixed && !snd_soc_dai_active(cpu_dai))
snd_soc_dai_set_sysclk(cpu_dai,
0, 0, SND_SOC_CLOCK_OUT);
simple_clk_disable(dai);
}
for_each_prop_dai_codec(props, i, dai) {
struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, i);
if (props->mclk_fs && !dai->clk_fixed && !snd_soc_dai_active(codec_dai))
snd_soc_dai_set_sysclk(codec_dai,
0, 0, SND_SOC_CLOCK_IN);
simple_clk_disable(dai);
}
}
EXPORT_SYMBOL_GPL(simple_util_shutdown);
static int simple_set_clk_rate(struct device *dev,
struct simple_util_dai *simple_dai,
unsigned long rate)
{
if (!simple_dai)
return 0;
if (simple_dai->clk_fixed && rate != simple_dai->sysclk) {
dev_err(dev, "dai %s invalid clock rate %lu\n", simple_dai->name, rate);
return -EINVAL;
}
if (!simple_dai->clk)
return 0;
if (clk_get_rate(simple_dai->clk) == rate)
return 0;
return clk_set_rate(simple_dai->clk, rate);
}
static int simple_set_tdm(struct snd_soc_dai *dai,
struct simple_util_dai *simple_dai,
struct snd_pcm_hw_params *params)
{
int sample_bits = params_width(params);
int slot_width, slot_count;
int i, ret;
if (!simple_dai || !simple_dai->tdm_width_map)
return 0;
slot_width = simple_dai->slot_width;
slot_count = simple_dai->slots;
if (slot_width == 0)
slot_width = sample_bits;
for (i = 0; i < simple_dai->n_tdm_widths; ++i) {
if (simple_dai->tdm_width_map[i].sample_bits == sample_bits) {
slot_width = simple_dai->tdm_width_map[i].slot_width;
slot_count = simple_dai->tdm_width_map[i].slot_count;
break;
}
}
ret = snd_soc_dai_set_tdm_slot(dai,
simple_dai->tx_slot_mask,
simple_dai->rx_slot_mask,
slot_count,
slot_width);
if (ret && ret != -ENOTSUPP) {
dev_err(dai->dev, "simple-card: set_tdm_slot error: %d\n", ret);
return ret;
}
return 0;
}
int simple_util_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
struct simple_util_dai *pdai;
struct snd_soc_dai *sdai;
struct simple_util_priv *priv = snd_soc_card_get_drvdata(rtd->card);
struct simple_dai_props *props = simple_priv_to_props(priv, rtd->num);
unsigned int mclk, mclk_fs = 0;
int i, ret;
if (props->mclk_fs)
mclk_fs = props->mclk_fs;
if (mclk_fs) {
struct snd_soc_component *component;
mclk = params_rate(params) * mclk_fs;
for_each_prop_dai_codec(props, i, pdai) {
ret = simple_set_clk_rate(rtd->dev, pdai, mclk);
if (ret < 0)
return ret;
}
for_each_prop_dai_cpu(props, i, pdai) {
ret = simple_set_clk_rate(rtd->dev, pdai, mclk);
if (ret < 0)
return ret;
}
/* Ensure sysclk is set on all components in case any
* (such as platform components) are missed by calls to
* snd_soc_dai_set_sysclk.
*/
for_each_rtd_components(rtd, i, component) {
ret = snd_soc_component_set_sysclk(component, 0, 0,
mclk, SND_SOC_CLOCK_IN);
if (ret && ret != -ENOTSUPP)
return ret;
}
for_each_rtd_codec_dais(rtd, i, sdai) {
ret = snd_soc_dai_set_sysclk(sdai, 0, mclk, SND_SOC_CLOCK_IN);
if (ret && ret != -ENOTSUPP)
return ret;
}
for_each_rtd_cpu_dais(rtd, i, sdai) {
ret = snd_soc_dai_set_sysclk(sdai, 0, mclk, SND_SOC_CLOCK_OUT);
if (ret && ret != -ENOTSUPP)
return ret;
}
}
for_each_prop_dai_codec(props, i, pdai) {
sdai = snd_soc_rtd_to_codec(rtd, i);
ret = simple_set_tdm(sdai, pdai, params);
if (ret < 0)
return ret;
}
for_each_prop_dai_cpu(props, i, pdai) {
sdai = snd_soc_rtd_to_cpu(rtd, i);
ret = simple_set_tdm(sdai, pdai, params);
if (ret < 0)
return ret;
}
return 0;
}
EXPORT_SYMBOL_GPL(simple_util_hw_params);
int simple_util_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
struct snd_pcm_hw_params *params)
{
struct simple_util_priv *priv = snd_soc_card_get_drvdata(rtd->card);
struct simple_dai_props *dai_props = simple_priv_to_props(priv, rtd->num);
struct simple_util_data *data = &dai_props->adata;
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 (data->convert_rate)
rate->min =
rate->max = data->convert_rate;
if (data->convert_channels)
channels->min =
channels->max = data->convert_channels;
if (data->convert_sample_format)
simple_fixup_sample_fmt(data, params);
return 0;
}
EXPORT_SYMBOL_GPL(simple_util_be_hw_params_fixup);
static int simple_init_dai(struct snd_soc_dai *dai, struct simple_util_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 inline int simple_component_is_codec(struct snd_soc_component *component)
{
return component->driver->endianness;
}
static int simple_init_for_codec2codec(struct snd_soc_pcm_runtime *rtd,
struct simple_dai_props *dai_props)
{
struct snd_soc_dai_link *dai_link = rtd->dai_link;
struct snd_soc_component *component;
struct snd_soc_pcm_stream *c2c_params;
struct snd_pcm_hardware hw;
int i, ret, stream;
/* Do nothing if it already has Codec2Codec settings */
if (dai_link->c2c_params)
return 0;
/* Do nothing if it was DPCM :: BE */
if (dai_link->no_pcm)
return 0;
/* Only Codecs */
for_each_rtd_components(rtd, i, component) {
if (!simple_component_is_codec(component))
return 0;
}
/* Assumes the capabilities are the same for all supported streams */
for_each_pcm_streams(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;
}
c2c_params = devm_kzalloc(rtd->dev, sizeof(*c2c_params), GFP_KERNEL);
if (!c2c_params)
return -ENOMEM;
c2c_params->formats = hw.formats;
c2c_params->rates = hw.rates;
c2c_params->rate_min = hw.rate_min;
c2c_params->rate_max = hw.rate_max;
c2c_params->channels_min = hw.channels_min;
c2c_params->channels_max = hw.channels_max;
dai_link->c2c_params = c2c_params;
dai_link->num_c2c_params = 1;
return 0;
}
int simple_util_dai_init(struct snd_soc_pcm_runtime *rtd)
{
struct simple_util_priv *priv = snd_soc_card_get_drvdata(rtd->card);
struct simple_dai_props *props = simple_priv_to_props(priv, rtd->num);
struct simple_util_dai *dai;
int i, ret;
for_each_prop_dai_codec(props, i, dai) {
ret = simple_init_dai(snd_soc_rtd_to_codec(rtd, i), dai);
if (ret < 0)
return ret;
}
for_each_prop_dai_cpu(props, i, dai) {
ret = simple_init_dai(snd_soc_rtd_to_cpu(rtd, i), dai);
if (ret < 0)
return ret;
}
ret = simple_init_for_codec2codec(rtd, props);
if (ret < 0)
return ret;
return 0;
}
EXPORT_SYMBOL_GPL(simple_util_dai_init);
void simple_util_canonicalize_platform(struct snd_soc_dai_link_component *platforms,
struct snd_soc_dai_link_component *cpus)
{
/*
* Assumes Platform == CPU
*
* Some CPU might be using soc-generic-dmaengine-pcm. This means CPU and Platform
* are different Component, but are sharing same component->dev.
*
* Let's assume Platform is same as CPU if it doesn't identify Platform on DT.
* see
* simple-card.c :: simple_count_noml()
*/
if (!platforms->of_node)
snd_soc_dlc_use_cpu_as_platform(platforms, cpus);
}
EXPORT_SYMBOL_GPL(simple_util_canonicalize_platform);
void simple_util_canonicalize_cpu(struct snd_soc_dai_link_component *cpus,
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)
cpus->dai_name = NULL;
}
EXPORT_SYMBOL_GPL(simple_util_canonicalize_cpu);
void simple_util_clean_reference(struct snd_soc_card *card)
{
struct snd_soc_dai_link *dai_link;
struct snd_soc_dai_link_component *cpu;
struct snd_soc_dai_link_component *codec;
int i, j;
for_each_card_prelinks(card, i, dai_link) {
for_each_link_cpus(dai_link, j, cpu)
of_node_put(cpu->of_node);
for_each_link_codecs(dai_link, j, codec)
of_node_put(codec->of_node);
}
}
EXPORT_SYMBOL_GPL(simple_util_clean_reference);
int simple_util_parse_routing(struct snd_soc_card *card,
char *prefix)
{
struct device_node *node = card->dev->of_node;
char prop[128];
if (!prefix)
prefix = "";
snprintf(prop, sizeof(prop), "%s%s", prefix, "routing");
if (!of_property_read_bool(node, prop))
return 0;
return snd_soc_of_parse_audio_routing(card, prop);
}
EXPORT_SYMBOL_GPL(simple_util_parse_routing);
int simple_util_parse_widgets(struct snd_soc_card *card,
char *prefix)
{
struct device_node *node = card->dev->of_node;
char prop[128];
if (!prefix)
prefix = "";
snprintf(prop, sizeof(prop), "%s%s", prefix, "widgets");
if (of_property_read_bool(node, prop))
return snd_soc_of_parse_audio_simple_widgets(card, prop);
/* no widgets is not error */
return 0;
}
EXPORT_SYMBOL_GPL(simple_util_parse_widgets);
int simple_util_parse_pin_switches(struct snd_soc_card *card,
char *prefix)
{
char prop[128];
if (!prefix)
prefix = "";
snprintf(prop, sizeof(prop), "%s%s", prefix, "pin-switches");
return snd_soc_of_parse_pin_switches(card, prop);
}
EXPORT_SYMBOL_GPL(simple_util_parse_pin_switches);
int simple_util_init_jack(struct snd_soc_card *card,
struct simple_util_jack *sjack,
int is_hp, char *prefix,
char *pin)
{
struct device *dev = card->dev;
struct gpio_desc *desc;
char prop[128];
char *pin_name;
char *gpio_name;
int mask;
int error;
if (!prefix)
prefix = "";
if (is_hp) {
snprintf(prop, sizeof(prop), "%shp-det", prefix);
pin_name = pin ? pin : "Headphones";
gpio_name = "Headphone detection";
mask = SND_JACK_HEADPHONE;
} else {
snprintf(prop, sizeof(prop), "%smic-det", prefix);
pin_name = pin ? pin : "Mic Jack";
gpio_name = "Mic detection";
mask = SND_JACK_MICROPHONE;
}
desc = gpiod_get_optional(dev, prop, GPIOD_IN);
error = PTR_ERR_OR_ZERO(desc);
if (error)
return error;
if (desc) {
error = gpiod_set_consumer_name(desc, gpio_name);
if (error)
return error;
sjack->pin.pin = pin_name;
sjack->pin.mask = mask;
sjack->gpio.name = gpio_name;
sjack->gpio.report = mask;
sjack->gpio.desc = desc;
sjack->gpio.debounce_time = 150;
snd_soc_card_jack_new_pins(card, pin_name, mask, &sjack->jack,
&sjack->pin, 1);
snd_soc_jack_add_gpios(&sjack->jack, 1, &sjack->gpio);
}
return 0;
}
EXPORT_SYMBOL_GPL(simple_util_init_jack);
int simple_util_init_aux_jacks(struct simple_util_priv *priv, char *prefix)
{
struct snd_soc_card *card = simple_priv_to_card(priv);
struct snd_soc_component *component;
int found_jack_index = 0;
int type = 0;
int num = 0;
int ret;
if (priv->aux_jacks)
return 0;
for_each_card_auxs(card, component) {
type = snd_soc_component_get_jack_type(component);
if (type > 0)
num++;
}
if (num < 1)
return 0;
priv->aux_jacks = devm_kcalloc(card->dev, num,
sizeof(struct snd_soc_jack), GFP_KERNEL);
if (!priv->aux_jacks)
return -ENOMEM;
for_each_card_auxs(card, component) {
char id[128];
struct snd_soc_jack *jack;
if (found_jack_index >= num)
break;
type = snd_soc_component_get_jack_type(component);
if (type <= 0)
continue;
/* create jack */
jack = &(priv->aux_jacks[found_jack_index++]);
snprintf(id, sizeof(id), "%s-jack", component->name);
ret = snd_soc_card_jack_new(card, id, type, jack);
if (ret)
continue;
(void)snd_soc_component_set_jack(component, jack, NULL);
}
return 0;
}
EXPORT_SYMBOL_GPL(simple_util_init_aux_jacks);
int simple_util_init_priv(struct simple_util_priv *priv,
struct link_info *li)
{
struct snd_soc_card *card = simple_priv_to_card(priv);
struct device *dev = simple_priv_to_dev(priv);
struct snd_soc_dai_link *dai_link;
struct simple_dai_props *dai_props;
struct simple_util_dai *dais;
struct snd_soc_dai_link_component *dlcs;
struct snd_soc_codec_conf *cconf = NULL;
int i, dai_num = 0, dlc_num = 0, cnf_num = 0;
dai_props = devm_kcalloc(dev, li->link, sizeof(*dai_props), GFP_KERNEL);
dai_link = devm_kcalloc(dev, li->link, sizeof(*dai_link), GFP_KERNEL);
if (!dai_props || !dai_link)
return -ENOMEM;
/*
* dais (= CPU+Codec)
* dlcs (= CPU+Codec+Platform)
*/
for (i = 0; i < li->link; i++) {
int cc = li->num[i].cpus + li->num[i].codecs;
dai_num += cc;
dlc_num += cc + li->num[i].platforms;
if (!li->num[i].cpus)
cnf_num += li->num[i].codecs;
}
dais = devm_kcalloc(dev, dai_num, sizeof(*dais), GFP_KERNEL);
dlcs = devm_kcalloc(dev, dlc_num, sizeof(*dlcs), GFP_KERNEL);
if (!dais || !dlcs)
return -ENOMEM;
if (cnf_num) {
cconf = devm_kcalloc(dev, cnf_num, sizeof(*cconf), GFP_KERNEL);
if (!cconf)
return -ENOMEM;
}
dev_dbg(dev, "link %d, dais %d, ccnf %d\n",
li->link, dai_num, cnf_num);
priv->dai_props = dai_props;
priv->dai_link = dai_link;
priv->dais = dais;
priv->dlcs = dlcs;
priv->codec_conf = cconf;
card->dai_link = priv->dai_link;
card->num_links = li->link;
card->codec_conf = cconf;
card->num_configs = cnf_num;
for (i = 0; i < li->link; i++) {
if (li->num[i].cpus) {
/* Normal CPU */
dai_link[i].cpus = dlcs;
dai_props[i].num.cpus =
dai_link[i].num_cpus = li->num[i].cpus;
dai_props[i].cpu_dai = dais;
dlcs += li->num[i].cpus;
dais += li->num[i].cpus;
} else {
/* DPCM Be's CPU = dummy */
dai_link[i].cpus = &snd_soc_dummy_dlc;
dai_props[i].num.cpus =
dai_link[i].num_cpus = 1;
}
if (li->num[i].codecs) {
/* Normal Codec */
dai_link[i].codecs = dlcs;
dai_props[i].num.codecs =
dai_link[i].num_codecs = li->num[i].codecs;
dai_props[i].codec_dai = dais;
dlcs += li->num[i].codecs;
dais += li->num[i].codecs;
if (!li->num[i].cpus) {
/* DPCM Be's Codec */
dai_props[i].codec_conf = cconf;
cconf += li->num[i].codecs;
}
} else {
/* DPCM Fe's Codec = dummy */
dai_link[i].codecs = &snd_soc_dummy_dlc;
dai_props[i].num.codecs =
dai_link[i].num_codecs = 1;
}
if (li->num[i].platforms) {
/* Have Platform */
dai_link[i].platforms = dlcs;
dai_props[i].num.platforms =
dai_link[i].num_platforms = li->num[i].platforms;
dlcs += li->num[i].platforms;
} else {
/* Doesn't have Platform */
dai_link[i].platforms = NULL;
dai_props[i].num.platforms =
dai_link[i].num_platforms = 0;
}
}
return 0;
}
EXPORT_SYMBOL_GPL(simple_util_init_priv);
void simple_util_remove(struct platform_device *pdev)
{
struct snd_soc_card *card = platform_get_drvdata(pdev);
simple_util_clean_reference(card);
}
EXPORT_SYMBOL_GPL(simple_util_remove);
int graph_util_card_probe(struct snd_soc_card *card)
{
struct simple_util_priv *priv = snd_soc_card_get_drvdata(card);
int ret;
ret = simple_util_init_hp(card, &priv->hp_jack, NULL);
if (ret < 0)
return ret;
ret = simple_util_init_mic(card, &priv->mic_jack, NULL);
if (ret < 0)
return ret;
return 0;
}
EXPORT_SYMBOL_GPL(graph_util_card_probe);
int graph_util_is_ports0(struct device_node *np)
{
struct device_node *port, *ports, *ports0, *top;
int ret;
/* np is "endpoint" or "port" */
if (of_node_name_eq(np, "endpoint")) {
port = of_get_parent(np);
} else {
port = np;
of_node_get(port);
}
ports = of_get_parent(port);
top = of_get_parent(ports);
ports0 = of_get_child_by_name(top, "ports");
ret = ports0 == ports;
of_node_put(port);
of_node_put(ports);
of_node_put(ports0);
of_node_put(top);
return ret;
}
EXPORT_SYMBOL_GPL(graph_util_is_ports0);
static int graph_get_dai_id(struct device_node *ep)
{
struct device_node *node;
struct device_node *endpoint;
struct of_endpoint info;
int i, id;
int ret;
/* use driver specified DAI ID if exist */
ret = snd_soc_get_dai_id(ep);
if (ret != -ENOTSUPP)
return ret;
/* use endpoint/port reg if exist */
ret = of_graph_parse_endpoint(ep, &info);
if (ret == 0) {
/*
* Because it will count port/endpoint if it doesn't have "reg".
* But, we can't judge whether it has "no reg", or "reg = <0>"
* only of_graph_parse_endpoint().
* We need to check "reg" property
*/
if (of_property_present(ep, "reg"))
return info.id;
node = of_get_parent(ep);
ret = of_property_present(node, "reg");
of_node_put(node);
if (ret)
return info.port;
}
node = of_graph_get_port_parent(ep);
/*
* Non HDMI sound case, counting port/endpoint on its DT
* is enough. Let's count it.
*/
i = 0;
id = -1;
for_each_endpoint_of_node(node, endpoint) {
if (endpoint == ep)
id = i;
i++;
}
of_node_put(node);
if (id < 0)
return -ENODEV;
return id;
}
int graph_util_parse_dai(struct device *dev, struct device_node *ep,
struct snd_soc_dai_link_component *dlc, int *is_single_link)
{
struct device_node *node;
struct of_phandle_args args = {};
struct snd_soc_dai *dai;
int ret;
if (!ep)
return 0;
node = of_graph_get_port_parent(ep);
/*
* Try to find from DAI node
*/
args.np = ep;
dai = snd_soc_get_dai_via_args(&args);
if (dai) {
dlc->dai_name = snd_soc_dai_name_get(dai);
dlc->dai_args = snd_soc_copy_dai_args(dev, &args);
if (!dlc->dai_args)
return -ENOMEM;
goto parse_dai_end;
}
/* Get dai->name */
args.np = node;
args.args[0] = graph_get_dai_id(ep);
args.args_count = (of_graph_get_endpoint_count(node) > 1);
/*
* 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_get_dlc(&args, dlc);
if (ret < 0) {
of_node_put(node);
return ret;
}
parse_dai_end:
if (is_single_link)
*is_single_link = of_graph_get_endpoint_count(node) == 1;
return 0;
}
EXPORT_SYMBOL_GPL(graph_util_parse_dai);
void graph_util_parse_link_direction(struct device_node *np,
bool *playback_only, bool *capture_only)
{
bool is_playback_only = of_property_read_bool(np, "playback-only");
bool is_capture_only = of_property_read_bool(np, "capture-only");
if (is_playback_only)
*playback_only = is_playback_only;
if (is_capture_only)
*capture_only = is_capture_only;
}
EXPORT_SYMBOL_GPL(graph_util_parse_link_direction);
static enum snd_soc_trigger_order
__graph_util_parse_trigger_order(struct simple_util_priv *priv,
struct device_node *np,
const char *prop)
{
u32 val[SND_SOC_TRIGGER_SIZE];
int ret;
ret = of_property_read_u32_array(np, prop, val, SND_SOC_TRIGGER_SIZE);
if (ret == 0) {
struct device *dev = simple_priv_to_dev(priv);
u32 order = (val[0] << 8) +
(val[1] << 4) +
(val[2]);
switch (order) {
case (SND_SOC_TRIGGER_LINK << 8) +
(SND_SOC_TRIGGER_COMPONENT << 4) +
(SND_SOC_TRIGGER_DAI):
return SND_SOC_TRIGGER_ORDER_DEFAULT;
case (SND_SOC_TRIGGER_LINK << 8) +
(SND_SOC_TRIGGER_DAI << 4) +
(SND_SOC_TRIGGER_COMPONENT):
return SND_SOC_TRIGGER_ORDER_LDC;
default:
dev_err(dev, "unsupported trigger order [0x%x]\n", order);
}
}
/* SND_SOC_TRIGGER_ORDER_MAX means error */
return SND_SOC_TRIGGER_ORDER_MAX;
}
void graph_util_parse_trigger_order(struct simple_util_priv *priv,
struct device_node *np,
enum snd_soc_trigger_order *trigger_start,
enum snd_soc_trigger_order *trigger_stop)
{
static enum snd_soc_trigger_order order;
/*
* We can use it like below
*
* #include <dt-bindings/sound/audio-graph.h>
*
* link-trigger-order = <SND_SOC_TRIGGER_LINK
* SND_SOC_TRIGGER_COMPONENT
* SND_SOC_TRIGGER_DAI>;
*/
order = __graph_util_parse_trigger_order(priv, np, "link-trigger-order");
if (order < SND_SOC_TRIGGER_ORDER_MAX) {
*trigger_start = order;
*trigger_stop = order;
}
order = __graph_util_parse_trigger_order(priv, np, "link-trigger-order-start");
if (order < SND_SOC_TRIGGER_ORDER_MAX)
*trigger_start = order;
order = __graph_util_parse_trigger_order(priv, np, "link-trigger-order-stop");
if (order < SND_SOC_TRIGGER_ORDER_MAX)
*trigger_stop = order;
return;
}
EXPORT_SYMBOL_GPL(graph_util_parse_trigger_order);
/* Module information */
MODULE_AUTHOR("Kuninori Morimoto <[email protected]>");
MODULE_DESCRIPTION("ALSA SoC Simple Card Utils");
MODULE_LICENSE("GPL v2");
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