// SPDX-License-Identifier: GPL-2.0
//
// test-component.c -- Test Audio Component driver
//
// Copyright (C) 2020 Renesas Electronics Corporation
// Kuninori Morimoto <[email protected]>
#include <linux/slab.h>
#include <linux/of.h>
#include <linux/of_graph.h>
#include <linux/module.h>
#include <linux/workqueue.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#define TEST_NAME_LEN 32
struct test_dai_name {
char name[TEST_NAME_LEN];
char name_playback[TEST_NAME_LEN];
char name_capture[TEST_NAME_LEN];
};
struct test_priv {
struct device *dev;
struct snd_pcm_substream *substream;
struct delayed_work dwork;
struct snd_soc_component_driver *component_driver;
struct snd_soc_dai_driver *dai_driver;
struct test_dai_name *name;
};
struct test_adata {
u32 is_cpu:1;
u32 cmp_v:1;
u32 dai_v:1;
};
#define mile_stone(d) dev_info((d)->dev, "%s() : %s", __func__, (d)->driver->name)
#define mile_stone_x(dev) dev_info(dev, "%s()", __func__)
static int test_dai_set_sysclk(struct snd_soc_dai *dai,
int clk_id, unsigned int freq, int dir)
{
mile_stone(dai);
return 0;
}
static int test_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
unsigned int freq_in, unsigned int freq_out)
{
mile_stone(dai);
return 0;
}
static int test_dai_set_clkdiv(struct snd_soc_dai *dai, int div_id, int div)
{
mile_stone(dai);
return 0;
}
static int test_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
unsigned int format = fmt & SND_SOC_DAIFMT_FORMAT_MASK;
unsigned int clock = fmt & SND_SOC_DAIFMT_CLOCK_MASK;
unsigned int inv = fmt & SND_SOC_DAIFMT_INV_MASK;
unsigned int master = fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK;
char *str;
dev_info(dai->dev, "name : %s", dai->name);
str = "unknown";
switch (format) {
case SND_SOC_DAIFMT_I2S:
str = "i2s";
break;
case SND_SOC_DAIFMT_RIGHT_J:
str = "right_j";
break;
case SND_SOC_DAIFMT_LEFT_J:
str = "left_j";
break;
case SND_SOC_DAIFMT_DSP_A:
str = "dsp_a";
break;
case SND_SOC_DAIFMT_DSP_B:
str = "dsp_b";
break;
case SND_SOC_DAIFMT_AC97:
str = "ac97";
break;
case SND_SOC_DAIFMT_PDM:
str = "pdm";
break;
}
dev_info(dai->dev, "format : %s", str);
if (clock == SND_SOC_DAIFMT_CONT)
str = "continuous";
else
str = "gated";
dev_info(dai->dev, "clock : %s", str);
str = "unknown";
switch (master) {
case SND_SOC_DAIFMT_BP_FP:
str = "clk provider, frame provider";
break;
case SND_SOC_DAIFMT_BC_FP:
str = "clk consumer, frame provider";
break;
case SND_SOC_DAIFMT_BP_FC:
str = "clk provider, frame consumer";
break;
case SND_SOC_DAIFMT_BC_FC:
str = "clk consumer, frame consumer";
break;
}
dev_info(dai->dev, "clock : codec is %s", str);
str = "unknown";
switch (inv) {
case SND_SOC_DAIFMT_NB_NF:
str = "normal bit, normal frame";
break;
case SND_SOC_DAIFMT_NB_IF:
str = "normal bit, invert frame";
break;
case SND_SOC_DAIFMT_IB_NF:
str = "invert bit, normal frame";
break;
case SND_SOC_DAIFMT_IB_IF:
str = "invert bit, invert frame";
break;
}
dev_info(dai->dev, "signal : %s", str);
return 0;
}
static int test_dai_mute_stream(struct snd_soc_dai *dai, int mute, int stream)
{
mile_stone(dai);
return 0;
}
static int test_dai_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
{
mile_stone(dai);
return 0;
}
static void test_dai_shutdown(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
{
mile_stone(dai);
}
static int test_dai_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
{
mile_stone(dai);
return 0;
}
static int test_dai_hw_free(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
{
mile_stone(dai);
return 0;
}
static int test_dai_trigger(struct snd_pcm_substream *substream, int cmd, struct snd_soc_dai *dai)
{
mile_stone(dai);
return 0;
}
static const u64 test_dai_formats =
/*
* Select below from Sound Card, not auto
* SND_SOC_POSSIBLE_DAIFMT_BP_FP
* SND_SOC_POSSIBLE_DAIFMT_BC_FP
* SND_SOC_POSSIBLE_DAIFMT_BP_FC
* SND_SOC_POSSIBLE_DAIFMT_BC_FC
*/
SND_SOC_POSSIBLE_DAIFMT_I2S |
SND_SOC_POSSIBLE_DAIFMT_RIGHT_J |
SND_SOC_POSSIBLE_DAIFMT_LEFT_J |
SND_SOC_POSSIBLE_DAIFMT_DSP_A |
SND_SOC_POSSIBLE_DAIFMT_DSP_B |
SND_SOC_POSSIBLE_DAIFMT_AC97 |
SND_SOC_POSSIBLE_DAIFMT_PDM |
SND_SOC_POSSIBLE_DAIFMT_NB_NF |
SND_SOC_POSSIBLE_DAIFMT_NB_IF |
SND_SOC_POSSIBLE_DAIFMT_IB_NF |
SND_SOC_POSSIBLE_DAIFMT_IB_IF;
static const struct snd_soc_dai_ops test_ops = {
.set_fmt = test_dai_set_fmt,
.startup = test_dai_startup,
.shutdown = test_dai_shutdown,
.auto_selectable_formats = &test_dai_formats,
.num_auto_selectable_formats = 1,
};
static const struct snd_soc_dai_ops test_verbose_ops = {
.set_sysclk = test_dai_set_sysclk,
.set_pll = test_dai_set_pll,
.set_clkdiv = test_dai_set_clkdiv,
.set_fmt = test_dai_set_fmt,
.mute_stream = test_dai_mute_stream,
.startup = test_dai_startup,
.shutdown = test_dai_shutdown,
.hw_params = test_dai_hw_params,
.hw_free = test_dai_hw_free,
.trigger = test_dai_trigger,
.auto_selectable_formats = &test_dai_formats,
.num_auto_selectable_formats = 1,
};
#define STUB_RATES SNDRV_PCM_RATE_8000_384000
#define STUB_FORMATS (SNDRV_PCM_FMTBIT_S8 | \
SNDRV_PCM_FMTBIT_U8 | \
SNDRV_PCM_FMTBIT_S16_LE | \
SNDRV_PCM_FMTBIT_U16_LE | \
SNDRV_PCM_FMTBIT_S24_LE | \
SNDRV_PCM_FMTBIT_S24_3LE | \
SNDRV_PCM_FMTBIT_U24_LE | \
SNDRV_PCM_FMTBIT_S32_LE | \
SNDRV_PCM_FMTBIT_U32_LE)
static int test_component_probe(struct snd_soc_component *component)
{
mile_stone(component);
return 0;
}
static void test_component_remove(struct snd_soc_component *component)
{
mile_stone(component);
}
static int test_component_suspend(struct snd_soc_component *component)
{
mile_stone(component);
return 0;
}
static int test_component_resume(struct snd_soc_component *component)
{
mile_stone(component);
return 0;
}
#define PREALLOC_BUFFER (32 * 1024)
static int test_component_pcm_construct(struct snd_soc_component *component,
struct snd_soc_pcm_runtime *rtd)
{
mile_stone(component);
snd_pcm_set_managed_buffer_all(
rtd->pcm,
SNDRV_DMA_TYPE_DEV,
rtd->card->snd_card->dev,
PREALLOC_BUFFER, PREALLOC_BUFFER);
return 0;
}
static void test_component_pcm_destruct(struct snd_soc_component *component,
struct snd_pcm *pcm)
{
mile_stone(component);
}
static int test_component_set_sysclk(struct snd_soc_component *component,
int clk_id, int source, unsigned int freq, int dir)
{
mile_stone(component);
return 0;
}
static int test_component_set_pll(struct snd_soc_component *component, int pll_id,
int source, unsigned int freq_in, unsigned int freq_out)
{
mile_stone(component);
return 0;
}
static int test_component_set_jack(struct snd_soc_component *component,
struct snd_soc_jack *jack, void *data)
{
mile_stone(component);
return 0;
}
static void test_component_seq_notifier(struct snd_soc_component *component,
enum snd_soc_dapm_type type, int subseq)
{
mile_stone(component);
}
static int test_component_stream_event(struct snd_soc_component *component, int event)
{
mile_stone(component);
return 0;
}
static int test_component_set_bias_level(struct snd_soc_component *component,
enum snd_soc_bias_level level)
{
mile_stone(component);
return 0;
}
static const struct snd_pcm_hardware test_component_hardware = {
/* Random values to keep userspace happy when checking constraints */
.info = SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_MMAP |
SNDRV_PCM_INFO_MMAP_VALID,
.buffer_bytes_max = 32 * 1024,
.period_bytes_min = 32,
.period_bytes_max = 8192,
.periods_min = 1,
.periods_max = 128,
.fifo_size = 256,
};
static int test_component_open(struct snd_soc_component *component,
struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
mile_stone(component);
/* BE's dont need dummy params */
if (!rtd->dai_link->no_pcm)
snd_soc_set_runtime_hwparams(substream, &test_component_hardware);
return 0;
}
static int test_component_close(struct snd_soc_component *component,
struct snd_pcm_substream *substream)
{
mile_stone(component);
return 0;
}
static int test_component_ioctl(struct snd_soc_component *component,
struct snd_pcm_substream *substream,
unsigned int cmd, void *arg)
{
mile_stone(component);
return 0;
}
static int test_component_hw_params(struct snd_soc_component *component,
struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
mile_stone(component);
return 0;
}
static int test_component_hw_free(struct snd_soc_component *component,
struct snd_pcm_substream *substream)
{
mile_stone(component);
return 0;
}
static int test_component_prepare(struct snd_soc_component *component,
struct snd_pcm_substream *substream)
{
mile_stone(component);
return 0;
}
static void test_component_timer_stop(struct test_priv *priv)
{
cancel_delayed_work(&priv->dwork);
}
static void test_component_timer_start(struct test_priv *priv)
{
schedule_delayed_work(&priv->dwork, msecs_to_jiffies(10));
}
static void test_component_dwork(struct work_struct *work)
{
struct test_priv *priv = container_of(work, struct test_priv, dwork.work);
if (priv->substream)
snd_pcm_period_elapsed(priv->substream);
test_component_timer_start(priv);
}
static int test_component_trigger(struct snd_soc_component *component,
struct snd_pcm_substream *substream, int cmd)
{
struct test_priv *priv = dev_get_drvdata(component->dev);
mile_stone(component);
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
test_component_timer_start(priv);
priv->substream = substream; /* set substream later */
break;
case SNDRV_PCM_TRIGGER_STOP:
priv->substream = NULL;
test_component_timer_stop(priv);
}
return 0;
}
static int test_component_sync_stop(struct snd_soc_component *component,
struct snd_pcm_substream *substream)
{
mile_stone(component);
return 0;
}
static snd_pcm_uframes_t test_component_pointer(struct snd_soc_component *component,
struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
static int pointer;
if (!runtime)
return 0;
pointer += 10;
if (pointer > PREALLOC_BUFFER)
pointer = 0;
/* mile_stone(component); */
return bytes_to_frames(runtime, pointer);
}
static int test_component_get_time_info(struct snd_soc_component *component,
struct snd_pcm_substream *substream,
struct timespec64 *system_ts,
struct timespec64 *audio_ts,
struct snd_pcm_audio_tstamp_config *audio_tstamp_config,
struct snd_pcm_audio_tstamp_report *audio_tstamp_report)
{
mile_stone(component);
return 0;
}
static int test_component_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
struct snd_pcm_hw_params *params)
{
mile_stone_x(rtd->dev);
return 0;
}
/* CPU */
static const struct test_adata test_cpu = { .is_cpu = 1, .cmp_v = 0, .dai_v = 0, };
static const struct test_adata test_cpu_vv = { .is_cpu = 1, .cmp_v = 1, .dai_v = 1, };
static const struct test_adata test_cpu_nv = { .is_cpu = 1, .cmp_v = 0, .dai_v = 1, };
static const struct test_adata test_cpu_vn = { .is_cpu = 1, .cmp_v = 1, .dai_v = 0, };
/* Codec */
static const struct test_adata test_codec = { .is_cpu = 0, .cmp_v = 0, .dai_v = 0, };
static const struct test_adata test_codec_vv = { .is_cpu = 0, .cmp_v = 1, .dai_v = 1, };
static const struct test_adata test_codec_nv = { .is_cpu = 0, .cmp_v = 0, .dai_v = 1, };
static const struct test_adata test_codec_vn = { .is_cpu = 0, .cmp_v = 1, .dai_v = 0, };
static const struct of_device_id test_of_match[] = {
{ .compatible = "test-cpu", .data = (void *)&test_cpu, },
{ .compatible = "test-cpu-verbose", .data = (void *)&test_cpu_vv, },
{ .compatible = "test-cpu-verbose-dai", .data = (void *)&test_cpu_nv, },
{ .compatible = "test-cpu-verbose-component", .data = (void *)&test_cpu_vn, },
{ .compatible = "test-codec", .data = (void *)&test_codec, },
{ .compatible = "test-codec-verbose", .data = (void *)&test_codec_vv, },
{ .compatible = "test-codec-verbose-dai", .data = (void *)&test_codec_nv, },
{ .compatible = "test-codec-verbose-component", .data = (void *)&test_codec_vn, },
{},
};
MODULE_DEVICE_TABLE(of, test_of_match);
static const struct snd_soc_dapm_widget widgets[] = {
/*
* FIXME
*
* Just IN/OUT is OK for now,
* but need to be updated ?
*/
SND_SOC_DAPM_INPUT("IN"),
SND_SOC_DAPM_OUTPUT("OUT"),
};
static int test_driver_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct device_node *node = dev->of_node;
struct device_node *ep;
const struct test_adata *adata = of_device_get_match_data(&pdev->dev);
struct snd_soc_component_driver *cdriv;
struct snd_soc_dai_driver *ddriv;
struct test_dai_name *dname;
struct test_priv *priv;
int num, ret, i;
num = of_graph_get_endpoint_count(node);
if (!num) {
dev_err(dev, "no port exits\n");
return -EINVAL;
}
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
cdriv = devm_kzalloc(dev, sizeof(*cdriv), GFP_KERNEL);
ddriv = devm_kzalloc(dev, sizeof(*ddriv) * num, GFP_KERNEL);
dname = devm_kzalloc(dev, sizeof(*dname) * num, GFP_KERNEL);
if (!priv || !cdriv || !ddriv || !dname || !adata)
return -EINVAL;
priv->dev = dev;
priv->component_driver = cdriv;
priv->dai_driver = ddriv;
priv->name = dname;
INIT_DELAYED_WORK(&priv->dwork, test_component_dwork);
dev_set_drvdata(dev, priv);
if (adata->is_cpu) {
cdriv->name = "test_cpu";
cdriv->pcm_construct = test_component_pcm_construct;
cdriv->pointer = test_component_pointer;
cdriv->trigger = test_component_trigger;
cdriv->legacy_dai_naming = 1;
} else {
cdriv->name = "test_codec";
cdriv->idle_bias_on = 1;
cdriv->endianness = 1;
}
cdriv->open = test_component_open;
cdriv->dapm_widgets = widgets;
cdriv->num_dapm_widgets = ARRAY_SIZE(widgets);
if (adata->cmp_v) {
cdriv->probe = test_component_probe;
cdriv->remove = test_component_remove;
cdriv->suspend = test_component_suspend;
cdriv->resume = test_component_resume;
cdriv->set_sysclk = test_component_set_sysclk;
cdriv->set_pll = test_component_set_pll;
cdriv->set_jack = test_component_set_jack;
cdriv->seq_notifier = test_component_seq_notifier;
cdriv->stream_event = test_component_stream_event;
cdriv->set_bias_level = test_component_set_bias_level;
cdriv->close = test_component_close;
cdriv->ioctl = test_component_ioctl;
cdriv->hw_params = test_component_hw_params;
cdriv->hw_free = test_component_hw_free;
cdriv->prepare = test_component_prepare;
cdriv->sync_stop = test_component_sync_stop;
cdriv->get_time_info = test_component_get_time_info;
cdriv->be_hw_params_fixup = test_component_be_hw_params_fixup;
if (adata->is_cpu)
cdriv->pcm_destruct = test_component_pcm_destruct;
}
i = 0;
for_each_endpoint_of_node(node, ep) {
snprintf(dname[i].name, TEST_NAME_LEN, "%s.%d", node->name, i);
ddriv[i].name = dname[i].name;
snprintf(dname[i].name_playback, TEST_NAME_LEN, "DAI%d Playback", i);
ddriv[i].playback.stream_name = dname[i].name_playback;
ddriv[i].playback.channels_min = 1;
ddriv[i].playback.channels_max = 384;
ddriv[i].playback.rates = STUB_RATES;
ddriv[i].playback.formats = STUB_FORMATS;
snprintf(dname[i].name_capture, TEST_NAME_LEN, "DAI%d Capture", i);
ddriv[i].capture.stream_name = dname[i].name_capture;
ddriv[i].capture.channels_min = 1;
ddriv[i].capture.channels_max = 384;
ddriv[i].capture.rates = STUB_RATES;
ddriv[i].capture.formats = STUB_FORMATS;
if (adata->dai_v)
ddriv[i].ops = &test_verbose_ops;
else
ddriv[i].ops = &test_ops;
i++;
}
ret = devm_snd_soc_register_component(dev, cdriv, ddriv, num);
if (ret < 0)
return ret;
mile_stone_x(dev);
return 0;
}
static void test_driver_remove(struct platform_device *pdev)
{
mile_stone_x(&pdev->dev);
}
static struct platform_driver test_driver = {
.driver = {
.name = "test-component",
.of_match_table = test_of_match,
},
.probe = test_driver_probe,
.remove = test_driver_remove,
};
module_platform_driver(test_driver);
MODULE_ALIAS("platform:asoc-test-component");
MODULE_AUTHOR("Kuninori Morimoto <[email protected]>");
MODULE_DESCRIPTION("ASoC Test Component");
MODULE_LICENSE("GPL v2");
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