From: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>
We already have dummy-codec, dummy-platform.
But its issues are
1) we don't have dummy-cpu,
2) we can't select it via DeviceTree
3) It do nothing
Sometimes we want to have Dummy Sound Component for debugging,
for testing, for learning Framework behavior, etc, etc...
This patch adds Test-Component driver for it.
User can select CPU Component by using "test-cpu" compatible,
and can select Codec Component by using "test-codec" compatible.
It doesn't support Platform so far, but is easy to add.
We can verbose print to know its progress if user selected
xxx-vn or xxx-nv or xxx-vv compatible driver.
for example,
test-cpu : silent Component, silent DAI
test-cpu-vn : verbose Component, silent DAI
test-cpu-nv : silent Component, verbose DAI
test-cpu-vv : verbose Component, verbose DAI
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>
---
sound/soc/generic/Kconfig | 6 +
sound/soc/generic/Makefile | 2 +
sound/soc/generic/test-component.c | 659 +++++++++++++++++++++++++++++
3 files changed, 667 insertions(+)
create mode 100644 sound/soc/generic/test-component.c
diff --git a/sound/soc/generic/Kconfig b/sound/soc/generic/Kconfig
index 4cafcf0e2bbf..bb734780669e 100644
--- a/sound/soc/generic/Kconfig
+++ b/sound/soc/generic/Kconfig
@@ -17,3 +17,9 @@ config SND_AUDIO_GRAPH_CARD
This option enables generic simple sound card support
with OF-graph DT bindings.
It also support DPCM of multi CPU single Codec ststem.
+
+config SND_TEST_COMPONENT
+ tristate "ASoC Test component sound support"
+ depends on OF
+ help
+ This option enables test component sound driver support.
diff --git a/sound/soc/generic/Makefile b/sound/soc/generic/Makefile
index 21c29e5e0671..988bfd45d2e2 100644
--- a/sound/soc/generic/Makefile
+++ b/sound/soc/generic/Makefile
@@ -2,7 +2,9 @@
snd-soc-simple-card-utils-objs := simple-card-utils.o
snd-soc-simple-card-objs := simple-card.o
snd-soc-audio-graph-card-objs := audio-graph-card.o
+snd-soc-test-component-objs := test-component.o
obj-$(CONFIG_SND_SIMPLE_CARD_UTILS) += snd-soc-simple-card-utils.o
obj-$(CONFIG_SND_SIMPLE_CARD) += snd-soc-simple-card.o
obj-$(CONFIG_SND_AUDIO_GRAPH_CARD) += snd-soc-audio-graph-card.o
+obj-$(CONFIG_SND_TEST_COMPONENT) += snd-soc-test-component.o
diff --git a/sound/soc/generic/test-component.c b/sound/soc/generic/test-component.c
new file mode 100644
index 000000000000..8a5247bf28c5
--- /dev/null
+++ b/sound/soc/generic/test-component.c
@@ -0,0 +1,659 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// test-component.c -- Test Audio Component driver
+//
+// Copyright (C) 2020 Renesas Electronics Corporation
+// Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>
+
+#include <linux/slab.h>
+#include <linux/of_device.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_MASTER_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_CBP_CFP:
+ str = "clk provider, frame provider";
+ break;
+ case SND_SOC_DAIFMT_CBC_CFP:
+ str = "clk consumer, frame provider";
+ break;
+ case SND_SOC_DAIFMT_CBP_CFC:
+ str = "clk provider, frame consumer";
+ break;
+ case SND_SOC_DAIFMT_CBC_CFC:
+ 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 int test_dai_bespoke_trigger(struct snd_pcm_substream *substream,
+ int cmd, struct snd_soc_dai *dai)
+{
+ mile_stone(dai);
+
+ return 0;
+}
+
+static u64 test_dai_formats =
+ /*
+ * Select below from Sound Card, not auto
+ * SND_SOC_POSSIBLE_DAIFMT_CBP_CFP
+ * SND_SOC_POSSIBLE_DAIFMT_CBC_CFP
+ * SND_SOC_POSSIBLE_DAIFMT_CBP_CFC
+ * SND_SOC_POSSIBLE_DAIFMT_CBC_CFC
+ */
+ 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,
+ .bespoke_trigger = test_dai_bespoke_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 = asoc_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-vv", .data = (void *)&test_cpu_vv, },
+ { .compatible = "test-cpu-vn", .data = (void *)&test_cpu_vn, },
+ { .compatible = "test-cpu-nv", .data = (void *)&test_cpu_nv, },
+ { .compatible = "test-codec", .data = (void *)&test_codec, },
+ { .compatible = "test-codec-vv", .data = (void *)&test_codec_vv, },
+ { .compatible = "test-codec-vn", .data = (void *)&test_codec_vn, },
+ { .compatible = "test-codec-nv", .data = (void *)&test_codec_nv, },
+ {},
+};
+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 *port;
+ const struct of_device_id *of_id = of_match_device(test_of_match, &pdev->dev);
+ const struct test_adata *adata = of_id->data;
+ 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_port_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)
+ 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;
+ } else {
+ cdriv->name = "test_codec";
+ cdriv->idle_bias_on = 1;
+ cdriv->endianness = 1;
+ cdriv->non_legacy_dai_naming = 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_port_of_node(node, port) {
+ 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 int test_driver_remove(struct platform_device *pdev)
+{
+ mile_stone_x(&pdev->dev);
+
+ return 0;
+}
+
+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 <kuninori.morimoto.gx@xxxxxxxxxxx>");
+MODULE_DESCRIPTION("ASoC Test Component");
+MODULE_LICENSE("GPL v2");
--
2.25.1
