Add a new snd-soc-card KUnit test with a simple test case for
snd_soc_card_get_kcontrol() and snd_soc_card_get_kcontrol_locked().
Signed-off-by: Richard Fitzgerald <rf@xxxxxxxxxxxxxxxxxxxxx>
---
sound/soc/Kconfig | 8 ++
sound/soc/Makefile | 4 +
sound/soc/soc-card-test.c | 191 ++++++++++++++++++++++++++++++++++++++
3 files changed, 203 insertions(+)
create mode 100644 sound/soc/soc-card-test.c
diff --git a/sound/soc/Kconfig b/sound/soc/Kconfig
index 439fa631c342..a52afb423b46 100644
--- a/sound/soc/Kconfig
+++ b/sound/soc/Kconfig
@@ -66,6 +66,14 @@ config SND_SOC_TOPOLOGY_KUNIT_TEST
userspace applications such as pulseaudio, to prevent unnecessary
problems.
+config SND_SOC_CARD_KUNIT_TEST
+ tristate "KUnit tests for SoC card"
+ depends on KUNIT
+ default KUNIT_ALL_TESTS
+ help
+ If you want to perform tests on ALSA SoC card functions say Y here.
+ If unsure, say N.
+
config SND_SOC_UTILS_KUNIT_TEST
tristate "KUnit tests for SoC utils"
depends on KUNIT
diff --git a/sound/soc/Makefile b/sound/soc/Makefile
index 8376fdb217ed..f90f5300b36e 100644
--- a/sound/soc/Makefile
+++ b/sound/soc/Makefile
@@ -12,6 +12,10 @@ ifneq ($(CONFIG_SND_SOC_TOPOLOGY_KUNIT_TEST),)
obj-$(CONFIG_SND_SOC_TOPOLOGY_KUNIT_TEST) += soc-topology-test.o
endif
+ifneq ($(CONFIG_SND_SOC_CARD_KUNIT_TEST),)
+obj-$(CONFIG_SND_SOC_CARD_KUNIT_TEST) += soc-card-test.o
+endif
+
ifneq ($(CONFIG_SND_SOC_UTILS_KUNIT_TEST),)
# snd-soc-test-objs := soc-utils-test.o
obj-$(CONFIG_SND_SOC_UTILS_KUNIT_TEST) += soc-utils-test.o
diff --git a/sound/soc/soc-card-test.c b/sound/soc/soc-card-test.c
new file mode 100644
index 000000000000..48c71bd1b6b1
--- /dev/null
+++ b/sound/soc/soc-card-test.c
@@ -0,0 +1,191 @@
+// SPDX-License-Identifier: GPL-2.0-only
+// Copyright (C) 2024 Cirrus Logic, Inc. and
+// Cirrus Logic International Semiconductor Ltd.
+
+#include <kunit/device.h>
+#include <kunit/test.h>
+#include <linux/module.h>
+#include <sound/control.h>
+#include <sound/soc.h>
+#include <sound/soc-card.h>
+
+struct soc_card_test_priv {
+ struct device *card_dev;
+ struct snd_soc_card *card;
+};
+
+static const char * const test_control_names[] = {
+ "Fee", "Fi", "Fo", "Fum",
+ "Left Fee", "Right Fee", "Left Fi", "Right Fi",
+ "Left Fo", "Right Fo", "Left Fum", "Right Fum",
+};
+
+static const struct snd_kcontrol_new test_card_controls[] = {
+ SOC_SINGLE(test_control_names[0], SND_SOC_NOPM, 0, 1, 0),
+ SOC_SINGLE(test_control_names[1], SND_SOC_NOPM, 1, 1, 0),
+ SOC_SINGLE(test_control_names[2], SND_SOC_NOPM, 2, 1, 0),
+ SOC_SINGLE(test_control_names[3], SND_SOC_NOPM, 3, 1, 0),
+ SOC_SINGLE(test_control_names[4], SND_SOC_NOPM, 4, 1, 0),
+ SOC_SINGLE(test_control_names[5], SND_SOC_NOPM, 5, 1, 0),
+ SOC_SINGLE(test_control_names[6], SND_SOC_NOPM, 6, 1, 0),
+ SOC_SINGLE(test_control_names[7], SND_SOC_NOPM, 7, 1, 0),
+ SOC_SINGLE(test_control_names[8], SND_SOC_NOPM, 8, 1, 0),
+ SOC_SINGLE(test_control_names[9], SND_SOC_NOPM, 9, 1, 0),
+ SOC_SINGLE(test_control_names[10], SND_SOC_NOPM, 10, 1, 0),
+ SOC_SINGLE(test_control_names[11], SND_SOC_NOPM, 11, 1, 0),
+};
+static_assert(ARRAY_SIZE(test_control_names) == ARRAY_SIZE(test_card_controls));
+
+static void test_snd_soc_card_get_kcontrol(struct kunit *test)
+{
+ struct soc_card_test_priv *priv = test->priv;
+ struct snd_soc_card *card = priv->card;
+ struct snd_kcontrol *kc;
+ struct soc_mixer_control *mc;
+ int i, ret;
+
+ ret = snd_soc_add_card_controls(card, test_card_controls, ARRAY_SIZE(test_card_controls));
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ /* Look up every control */
+ for (i = 0; i < ARRAY_SIZE(test_control_names); ++i) {
+ kc = snd_soc_card_get_kcontrol(card, test_control_names[i]);
+ KUNIT_EXPECT_NOT_ERR_OR_NULL_MSG(test, kc, "Failed to find '%s'\n",
+ test_control_names[i]);
+ if (!kc)
+ continue;
+
+ /* Test that it is the correct control */
+ mc = (struct soc_mixer_control *)kc->private_value;
+ KUNIT_EXPECT_EQ_MSG(test, mc->shift, i, "For '%s'\n", test_control_names[i]);
+ }
+
+ /* Test some names that should not be found */
+ kc = snd_soc_card_get_kcontrol(card, "None");
+ KUNIT_EXPECT_NULL(test, kc);
+
+ kc = snd_soc_card_get_kcontrol(card, "Left None");
+ KUNIT_EXPECT_NULL(test, kc);
+
+ kc = snd_soc_card_get_kcontrol(card, "Left");
+ KUNIT_EXPECT_NULL(test, kc);
+
+ kc = snd_soc_card_get_kcontrol(card, NULL);
+ KUNIT_EXPECT_NULL(test, kc);
+}
+
+static void test_snd_soc_card_get_kcontrol_locked(struct kunit *test)
+{
+ struct soc_card_test_priv *priv = test->priv;
+ struct snd_soc_card *card = priv->card;
+ struct snd_kcontrol *kc, *kcw;
+ struct soc_mixer_control *mc;
+ int i, ret;
+
+ ret = snd_soc_add_card_controls(card, test_card_controls, ARRAY_SIZE(test_card_controls));
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ /* Look up every control */
+ for (i = 0; i < ARRAY_SIZE(test_control_names); ++i) {
+ down_read(&card->snd_card->controls_rwsem);
+ kc = snd_soc_card_get_kcontrol_locked(card, test_control_names[i]);
+ up_read(&card->snd_card->controls_rwsem);
+ KUNIT_EXPECT_NOT_ERR_OR_NULL_MSG(test, kc, "Failed to find '%s'\n",
+ test_control_names[i]);
+ if (!kc)
+ continue;
+
+ /* Test that it is the correct control */
+ mc = (struct soc_mixer_control *)kc->private_value;
+ KUNIT_EXPECT_EQ_MSG(test, mc->shift, i, "For '%s'\n", test_control_names[i]);
+
+ down_write(&card->snd_card->controls_rwsem);
+ kcw = snd_soc_card_get_kcontrol_locked(card, test_control_names[i]);
+ up_write(&card->snd_card->controls_rwsem);
+ KUNIT_EXPECT_NOT_ERR_OR_NULL_MSG(test, kcw, "Failed to find '%s'\n",
+ test_control_names[i]);
+
+ KUNIT_EXPECT_PTR_EQ(test, kc, kcw);
+ }
+
+ /* Test some names that should not be found */
+ down_read(&card->snd_card->controls_rwsem);
+ kc = snd_soc_card_get_kcontrol_locked(card, "None");
+ up_read(&card->snd_card->controls_rwsem);
+ KUNIT_EXPECT_NULL(test, kc);
+
+ down_read(&card->snd_card->controls_rwsem);
+ kc = snd_soc_card_get_kcontrol_locked(card, "Left None");
+ up_read(&card->snd_card->controls_rwsem);
+ KUNIT_EXPECT_NULL(test, kc);
+
+ down_read(&card->snd_card->controls_rwsem);
+ kc = snd_soc_card_get_kcontrol_locked(card, "Left");
+ up_read(&card->snd_card->controls_rwsem);
+ KUNIT_EXPECT_NULL(test, kc);
+
+ down_read(&card->snd_card->controls_rwsem);
+ kc = snd_soc_card_get_kcontrol_locked(card, NULL);
+ up_read(&card->snd_card->controls_rwsem);
+ KUNIT_EXPECT_NULL(test, kc);
+}
+
+static int soc_card_test_case_init(struct kunit *test)
+{
+ struct soc_card_test_priv *priv;
+ int ret;
+
+ priv = kunit_kzalloc(test, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ test->priv = priv;
+
+ priv->card_dev = kunit_device_register(test, "sound-soc-card-test");
+ priv->card_dev = get_device(priv->card_dev);
+ if (!priv->card_dev)
+ return -ENODEV;
+
+ priv->card = kunit_kzalloc(test, sizeof(*priv->card), GFP_KERNEL);
+ if (!priv->card)
+ return -ENOMEM;
+
+ priv->card->name = "soc-card-test";
+ priv->card->dev = priv->card_dev;
+ priv->card->owner = THIS_MODULE;
+
+ ret = snd_soc_register_card(priv->card);
+ if (!ret)
+ return ret;
+
+ return 0;
+}
+
+static void soc_card_test_case_exit(struct kunit *test)
+{
+ struct soc_card_test_priv *priv = test->priv;
+
+ if (priv->card)
+ snd_soc_unregister_card(priv->card);
+
+ if (priv->card_dev)
+ put_device(priv->card_dev);
+}
+
+static struct kunit_case soc_card_test_cases[] = {
+ KUNIT_CASE(test_snd_soc_card_get_kcontrol),
+ KUNIT_CASE(test_snd_soc_card_get_kcontrol_locked),
+ {}
+};
+
+static struct kunit_suite soc_card_test_suite = {
+ .name = "soc-card",
+ .test_cases = soc_card_test_cases,
+ .init = soc_card_test_case_init,
+ .exit = soc_card_test_case_exit,
+};
+
+kunit_test_suites(&soc_card_test_suite);
+
+MODULE_DESCRIPTION("ASoC soc-card KUnit test");
+MODULE_LICENSE("GPL");
--
2.39.2
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