Add a KUnit test for the cs-amp-lib library. This has test cases
for cs_amp_get_efi_calibration_data() and cs_amp_write_cal_coeffs().
A KUNIT_STATIC_STUB_REDIRECT() has been added to
cs_amp_get_efi_variable() and cs_amp_write_cal_coeff() so that the
KUnit test can redirect these to test harness functions.
Signed-off-by: Richard Fitzgerald <rf@xxxxxxxxxxxxxxxxxxxxx>
---
include/sound/cs-amp-lib.h | 14 +
sound/soc/codecs/Kconfig | 14 +
sound/soc/codecs/Makefile | 2 +
sound/soc/codecs/cs-amp-lib-test.c | 709 +++++++++++++++++++++++++++++
sound/soc/codecs/cs-amp-lib.c | 18 +-
5 files changed, 755 insertions(+), 2 deletions(-)
create mode 100644 sound/soc/codecs/cs-amp-lib-test.c
diff --git a/include/sound/cs-amp-lib.h b/include/sound/cs-amp-lib.h
index 35f7bd848276..c9055d833bd0 100644
--- a/include/sound/cs-amp-lib.h
+++ b/include/sound/cs-amp-lib.h
@@ -49,4 +49,18 @@ int cs_amp_write_cal_coeffs(struct wm_adsp *dsp,
const struct cirrus_amp_cal_data *data);
int cs_amp_get_efi_calibration_data(struct device *dev, u64 target_uid, int amp_index,
struct cirrus_amp_cal_data *out_data);
+
+struct cs_amp_test_hooks {
+ efi_status_t (*get_efi_variable)(efi_char16_t *name,
+ efi_guid_t *guid,
+ unsigned long *size,
+ void *buf);
+
+ int (*write_cal_coeff)(struct wm_adsp *dsp,
+ const struct cirrus_amp_cal_controls *controls,
+ const char *ctl_name, u32 val);
+};
+
+extern const struct cs_amp_test_hooks * const cs_amp_test_hooks;
+
#endif /* CS_AMP_LIB_H */
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index 15f287784d8b..373d0f6478ae 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -732,6 +732,20 @@ config SND_SOC_CROS_EC_CODEC
config SND_SOC_CS_AMP_LIB
tristate
+config SND_SOC_CS_AMP_LIB_TEST
+ tristate "KUnit test for Cirrus Logic cs-amp-lib"
+ depends on KUNIT
+ depends on ACPI || COMPILE_TEST
+ default KUNIT_ALL_TESTS
+ select SND_SOC_CS_AMP_LIB
+ help
+ This builds KUnit tests for the Cirrus Logic common
+ amplifier library.
+ For more information on KUnit and unit tests in general,
+ please refer to the KUnit documentation in
+ Documentation/dev-tools/kunit/.
+ If in doubt, say "N".
+
config SND_SOC_CS35L32
tristate "Cirrus Logic CS35L32 CODEC"
depends on I2C
diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index 0fc40640e5d0..7c075539dc47 100644
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -60,6 +60,7 @@ snd-soc-cpcap-objs := cpcap.o
snd-soc-cq93vc-objs := cq93vc.o
snd-soc-cros-ec-codec-objs := cros_ec_codec.o
snd-soc-cs-amp-lib-objs := cs-amp-lib.o
+snd-soc-cs-amp-lib-test-objs := cs-amp-lib-test.o
snd-soc-cs35l32-objs := cs35l32.o
snd-soc-cs35l33-objs := cs35l33.o
snd-soc-cs35l34-objs := cs35l34.o
@@ -454,6 +455,7 @@ obj-$(CONFIG_SND_SOC_CQ0093VC) += snd-soc-cq93vc.o
obj-$(CONFIG_SND_SOC_CPCAP) += snd-soc-cpcap.o
obj-$(CONFIG_SND_SOC_CROS_EC_CODEC) += snd-soc-cros-ec-codec.o
obj-$(CONFIG_SND_SOC_CS_AMP_LIB) += snd-soc-cs-amp-lib.o
+obj-$(CONFIG_SND_SOC_CS_AMP_LIB_TEST) += snd-soc-cs-amp-lib-test.o
obj-$(CONFIG_SND_SOC_CS35L32) += snd-soc-cs35l32.o
obj-$(CONFIG_SND_SOC_CS35L33) += snd-soc-cs35l33.o
obj-$(CONFIG_SND_SOC_CS35L34) += snd-soc-cs35l34.o
diff --git a/sound/soc/codecs/cs-amp-lib-test.c b/sound/soc/codecs/cs-amp-lib-test.c
new file mode 100644
index 000000000000..6f9e5755e145
--- /dev/null
+++ b/sound/soc/codecs/cs-amp-lib-test.c
@@ -0,0 +1,709 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// KUnit test for the Cirrus common amplifier library.
+//
+// Copyright (C) 2024 Cirrus Logic, Inc. and
+// Cirrus Logic International Semiconductor Ltd.
+
+#include <kunit/test.h>
+#include <kunit/static_stub.h>
+#include <linux/firmware/cirrus/wmfw.h>
+#include <linux/gpio/driver.h>
+#include <linux/list.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/random.h>
+#include <sound/cs-amp-lib.h>
+#include "wm_adsp.h"
+
+struct cs_amp_lib_test_priv {
+ struct platform_device amp_pdev;
+
+ struct cirrus_amp_efi_data *cal_blob;
+ struct list_head ctl_write_list;
+};
+
+struct cs_amp_lib_test_ctl_write_entry {
+ struct list_head list;
+ unsigned int value;
+ char name[16];
+};
+
+struct cs_amp_lib_test_param {
+ int num_amps;
+ int amp_index;
+};
+
+static void cs_amp_lib_test_init_dummy_cal_blob(struct kunit *test, int num_amps)
+{
+ struct cs_amp_lib_test_priv *priv = test->priv;
+ unsigned int blob_size;
+
+ blob_size = offsetof(struct cirrus_amp_efi_data, data) +
+ sizeof(struct cirrus_amp_cal_data) * num_amps;
+
+ priv->cal_blob = kunit_kzalloc(test, blob_size, GFP_KERNEL);
+ KUNIT_ASSERT_NOT_NULL(test, priv->cal_blob);
+
+ priv->cal_blob->size = blob_size;
+ priv->cal_blob->count = num_amps;
+
+ get_random_bytes(priv->cal_blob->data, sizeof(struct cirrus_amp_cal_data) * num_amps);
+}
+
+static u64 cs_amp_lib_test_get_target_uid(struct kunit *test)
+{
+ struct cs_amp_lib_test_priv *priv = test->priv;
+ const struct cs_amp_lib_test_param *param = test->param_value;
+ u64 uid;
+
+ uid = priv->cal_blob->data[param->amp_index].calTarget[1];
+ uid <<= 32;
+ uid |= priv->cal_blob->data[param->amp_index].calTarget[0];
+
+ return uid;
+}
+
+/* Redirected get_efi_variable to simulate that the file is too short */
+static efi_status_t cs_amp_lib_test_get_efi_variable_nohead(efi_char16_t *name,
+ efi_guid_t *guid,
+ unsigned long *size,
+ void *buf)
+{
+ if (!buf) {
+ *size = offsetof(struct cirrus_amp_efi_data, data) - 1;
+ return EFI_BUFFER_TOO_SMALL;
+ }
+
+ return EFI_NOT_FOUND;
+}
+
+/* Should return -EOVERFLOW if the header is larger than the EFI data */
+static void cs_amp_lib_test_cal_data_too_short_test(struct kunit *test)
+{
+ struct cs_amp_lib_test_priv *priv = test->priv;
+ struct cirrus_amp_cal_data result_data;
+ int ret;
+
+ /* Redirect calls to get EFI data */
+ kunit_activate_static_stub(test,
+ cs_amp_test_hooks->get_efi_variable,
+ cs_amp_lib_test_get_efi_variable_nohead);
+
+ ret = cs_amp_get_efi_calibration_data(&priv->amp_pdev.dev, 0, 0, &result_data);
+ KUNIT_EXPECT_EQ(test, ret, -EOVERFLOW);
+
+ kunit_deactivate_static_stub(test, cs_amp_test_hooks->get_efi_variable);
+}
+
+/* Redirected get_efi_variable to simulate that the count is larger than the file */
+static efi_status_t cs_amp_lib_test_get_efi_variable_bad_count(efi_char16_t *name,
+ efi_guid_t *guid,
+ unsigned long *size,
+ void *buf)
+{
+ struct kunit *test = kunit_get_current_test();
+ struct cs_amp_lib_test_priv *priv = test->priv;
+
+ if (!buf) {
+ /*
+ * Return a size that is shorter than required for the
+ * declared number of entries.
+ */
+ *size = priv->cal_blob->size - 1;
+ return EFI_BUFFER_TOO_SMALL;
+ }
+
+ memcpy(buf, priv->cal_blob, priv->cal_blob->size - 1);
+
+ return EFI_SUCCESS;
+}
+
+/* Should return -EOVERFLOW if the entry count is larger than the EFI data */
+static void cs_amp_lib_test_cal_count_too_big_test(struct kunit *test)
+{
+ struct cs_amp_lib_test_priv *priv = test->priv;
+ struct cirrus_amp_cal_data result_data;
+ int ret;
+
+ cs_amp_lib_test_init_dummy_cal_blob(test, 8);
+
+ /* Redirect calls to get EFI data */
+ kunit_activate_static_stub(test,
+ cs_amp_test_hooks->get_efi_variable,
+ cs_amp_lib_test_get_efi_variable_bad_count);
+
+ ret = cs_amp_get_efi_calibration_data(&priv->amp_pdev.dev, 0, 0, &result_data);
+ KUNIT_EXPECT_EQ(test, ret, -EOVERFLOW);
+
+ kunit_deactivate_static_stub(test, cs_amp_test_hooks->get_efi_variable);
+}
+
+/* Redirected get_efi_variable to simulate that the variable not found */
+static efi_status_t cs_amp_lib_test_get_efi_variable_none(efi_char16_t *name,
+ efi_guid_t *guid,
+ unsigned long *size,
+ void *buf)
+{
+ return EFI_NOT_FOUND;
+}
+
+/* If EFI doesn't contain a cal data variable the result should be -ENOENT */
+static void cs_amp_lib_test_no_cal_data_test(struct kunit *test)
+{
+ struct cs_amp_lib_test_priv *priv = test->priv;
+ struct cirrus_amp_cal_data result_data;
+ int ret;
+
+ /* Redirect calls to get EFI data */
+ kunit_activate_static_stub(test,
+ cs_amp_test_hooks->get_efi_variable,
+ cs_amp_lib_test_get_efi_variable_none);
+
+ ret = cs_amp_get_efi_calibration_data(&priv->amp_pdev.dev, 0, 0, &result_data);
+ KUNIT_EXPECT_EQ(test, ret, -ENOENT);
+
+ kunit_deactivate_static_stub(test, cs_amp_test_hooks->get_efi_variable);
+}
+
+/* Redirected get_efi_variable to simulate reading a cal data blob */
+static efi_status_t cs_amp_lib_test_get_efi_variable(efi_char16_t *name,
+ efi_guid_t *guid,
+ unsigned long *size,
+ void *buf)
+{
+ static const efi_char16_t expected_name[] = L"CirrusSmartAmpCalibrationData";
+ static const efi_guid_t expected_guid =
+ EFI_GUID(0x02f9af02, 0x7734, 0x4233, 0xb4, 0x3d, 0x93, 0xfe, 0x5a, 0xa3, 0x5d, 0xb3);
+ struct kunit *test = kunit_get_current_test();
+ struct cs_amp_lib_test_priv *priv = test->priv;
+
+ KUNIT_EXPECT_NOT_ERR_OR_NULL(test, name);
+ KUNIT_EXPECT_NOT_ERR_OR_NULL(test, guid);
+ KUNIT_EXPECT_NOT_ERR_OR_NULL(test, size);
+
+ KUNIT_EXPECT_MEMEQ(test, name, expected_name, sizeof(expected_name));
+ KUNIT_EXPECT_MEMEQ(test, guid, &expected_guid, sizeof(expected_guid));
+
+ if (!buf) {
+ *size = priv->cal_blob->size;
+ return EFI_BUFFER_TOO_SMALL;
+ }
+
+ KUNIT_ASSERT_GE_MSG(test, ksize(buf), priv->cal_blob->size, "Buffer to small");
+
+ memcpy(buf, priv->cal_blob, priv->cal_blob->size);
+
+ return EFI_SUCCESS;
+}
+
+/* Get cal data block for a given amp, matched by target UID. */
+static void cs_amp_lib_test_get_efi_cal_by_uid_test(struct kunit *test)
+{
+ struct cs_amp_lib_test_priv *priv = test->priv;
+ const struct cs_amp_lib_test_param *param = test->param_value;
+ struct cirrus_amp_cal_data result_data;
+ u64 target_uid;
+ int ret;
+
+ cs_amp_lib_test_init_dummy_cal_blob(test, param->num_amps);
+
+ /* Redirect calls to get EFI data */
+ kunit_activate_static_stub(test,
+ cs_amp_test_hooks->get_efi_variable,
+ cs_amp_lib_test_get_efi_variable);
+
+ target_uid = cs_amp_lib_test_get_target_uid(test);
+ ret = cs_amp_get_efi_calibration_data(&priv->amp_pdev.dev, target_uid, -1, &result_data);
+ KUNIT_EXPECT_EQ(test, ret, 0);
+
+ kunit_deactivate_static_stub(test, cs_amp_test_hooks->get_efi_variable);
+
+ KUNIT_EXPECT_EQ(test, result_data.calTarget[0], target_uid & 0xFFFFFFFFULL);
+ KUNIT_EXPECT_EQ(test, result_data.calTarget[1], target_uid >> 32);
+ KUNIT_EXPECT_EQ(test, result_data.calTime[0],
+ priv->cal_blob->data[param->amp_index].calTime[0]);
+ KUNIT_EXPECT_EQ(test, result_data.calTime[1],
+ priv->cal_blob->data[param->amp_index].calTime[1]);
+ KUNIT_EXPECT_EQ(test, result_data.calAmbient,
+ priv->cal_blob->data[param->amp_index].calAmbient);
+ KUNIT_EXPECT_EQ(test, result_data.calStatus,
+ priv->cal_blob->data[param->amp_index].calStatus);
+ KUNIT_EXPECT_EQ(test, result_data.calR,
+ priv->cal_blob->data[param->amp_index].calR);
+}
+
+/* Get cal data block for a given amp index without checking target UID. */
+static void cs_amp_lib_test_get_efi_cal_by_index_unchecked_test(struct kunit *test)
+{
+ struct cs_amp_lib_test_priv *priv = test->priv;
+ const struct cs_amp_lib_test_param *param = test->param_value;
+ struct cirrus_amp_cal_data result_data;
+ int ret;
+
+ cs_amp_lib_test_init_dummy_cal_blob(test, param->num_amps);
+
+ /* Redirect calls to get EFI data */
+ kunit_activate_static_stub(test,
+ cs_amp_test_hooks->get_efi_variable,
+ cs_amp_lib_test_get_efi_variable);
+
+ ret = cs_amp_get_efi_calibration_data(&priv->amp_pdev.dev, 0,
+ param->amp_index, &result_data);
+ KUNIT_EXPECT_EQ(test, ret, 0);
+
+ kunit_deactivate_static_stub(test, cs_amp_test_hooks->get_efi_variable);
+
+ KUNIT_EXPECT_EQ(test, result_data.calTime[0],
+ priv->cal_blob->data[param->amp_index].calTime[0]);
+ KUNIT_EXPECT_EQ(test, result_data.calTime[1],
+ priv->cal_blob->data[param->amp_index].calTime[1]);
+ KUNIT_EXPECT_EQ(test, result_data.calAmbient,
+ priv->cal_blob->data[param->amp_index].calAmbient);
+ KUNIT_EXPECT_EQ(test, result_data.calStatus,
+ priv->cal_blob->data[param->amp_index].calStatus);
+ KUNIT_EXPECT_EQ(test, result_data.calR,
+ priv->cal_blob->data[param->amp_index].calR);
+}
+
+/* Get cal data block for a given amp index with checked target UID. */
+static void cs_amp_lib_test_get_efi_cal_by_index_checked_test(struct kunit *test)
+{
+ struct cs_amp_lib_test_priv *priv = test->priv;
+ const struct cs_amp_lib_test_param *param = test->param_value;
+ struct cirrus_amp_cal_data result_data;
+ u64 target_uid;
+ int ret;
+
+ cs_amp_lib_test_init_dummy_cal_blob(test, param->num_amps);
+
+ /* Redirect calls to get EFI data */
+ kunit_activate_static_stub(test,
+ cs_amp_test_hooks->get_efi_variable,
+ cs_amp_lib_test_get_efi_variable);
+
+ target_uid = cs_amp_lib_test_get_target_uid(test);
+ ret = cs_amp_get_efi_calibration_data(&priv->amp_pdev.dev, target_uid,
+ param->amp_index, &result_data);
+ KUNIT_EXPECT_EQ(test, ret, 0);
+
+ kunit_deactivate_static_stub(test, cs_amp_test_hooks->get_efi_variable);
+
+ KUNIT_EXPECT_EQ(test, result_data.calTime[0],
+ priv->cal_blob->data[param->amp_index].calTime[0]);
+ KUNIT_EXPECT_EQ(test, result_data.calTime[1],
+ priv->cal_blob->data[param->amp_index].calTime[1]);
+ KUNIT_EXPECT_EQ(test, result_data.calAmbient,
+ priv->cal_blob->data[param->amp_index].calAmbient);
+ KUNIT_EXPECT_EQ(test, result_data.calStatus,
+ priv->cal_blob->data[param->amp_index].calStatus);
+ KUNIT_EXPECT_EQ(test, result_data.calR,
+ priv->cal_blob->data[param->amp_index].calR);
+}
+
+/*
+ * Get cal data block for a given amp index with checked target UID.
+ * The UID does not match so the result should be -ENOENT.
+ */
+static void cs_amp_lib_test_get_efi_cal_by_index_uid_mismatch_test(struct kunit *test)
+{
+ struct cs_amp_lib_test_priv *priv = test->priv;
+ const struct cs_amp_lib_test_param *param = test->param_value;
+ struct cirrus_amp_cal_data result_data;
+ u64 target_uid;
+ int ret;
+
+ cs_amp_lib_test_init_dummy_cal_blob(test, param->num_amps);
+
+ /* Redirect calls to get EFI data */
+ kunit_activate_static_stub(test,
+ cs_amp_test_hooks->get_efi_variable,
+ cs_amp_lib_test_get_efi_variable);
+
+ /* Get a target UID that won't match the entry */
+ target_uid = ~cs_amp_lib_test_get_target_uid(test);
+ ret = cs_amp_get_efi_calibration_data(&priv->amp_pdev.dev, target_uid,
+ param->amp_index, &result_data);
+ KUNIT_EXPECT_EQ(test, ret, -ENOENT);
+
+ kunit_deactivate_static_stub(test, cs_amp_test_hooks->get_efi_variable);
+}
+
+/*
+ * Get cal data block for a given amp, where the cal data does not
+ * specify calTarget so the lookup falls back to using the index
+ */
+static void cs_amp_lib_test_get_efi_cal_by_index_fallback_test(struct kunit *test)
+{
+ struct cs_amp_lib_test_priv *priv = test->priv;
+ const struct cs_amp_lib_test_param *param = test->param_value;
+ struct cirrus_amp_cal_data result_data;
+ static const u64 bad_target_uid = 0xBADCA100BABABABAULL;
+ int i, ret;
+
+ cs_amp_lib_test_init_dummy_cal_blob(test, param->num_amps);
+
+ /* Make all the target values zero so they are ignored */
+ for (i = 0; i < priv->cal_blob->count; ++i) {
+ priv->cal_blob->data[i].calTarget[0] = 0;
+ priv->cal_blob->data[i].calTarget[1] = 0;
+ }
+
+ /* Redirect calls to get EFI data */
+ kunit_activate_static_stub(test,
+ cs_amp_test_hooks->get_efi_variable,
+ cs_amp_lib_test_get_efi_variable);
+
+ ret = cs_amp_get_efi_calibration_data(&priv->amp_pdev.dev, bad_target_uid,
+ param->amp_index, &result_data);
+ KUNIT_EXPECT_EQ(test, ret, 0);
+
+ kunit_deactivate_static_stub(test, cs_amp_test_hooks->get_efi_variable);
+
+ KUNIT_EXPECT_EQ(test, result_data.calTime[0],
+ priv->cal_blob->data[param->amp_index].calTime[0]);
+ KUNIT_EXPECT_EQ(test, result_data.calTime[1],
+ priv->cal_blob->data[param->amp_index].calTime[1]);
+ KUNIT_EXPECT_EQ(test, result_data.calAmbient,
+ priv->cal_blob->data[param->amp_index].calAmbient);
+ KUNIT_EXPECT_EQ(test, result_data.calStatus,
+ priv->cal_blob->data[param->amp_index].calStatus);
+ KUNIT_EXPECT_EQ(test, result_data.calR,
+ priv->cal_blob->data[param->amp_index].calR);
+}
+
+/*
+ * If the target UID isn't present in the cal data, and there isn't an
+ * index to fall back do, the result should be -ENOENT.
+ */
+static void cs_amp_lib_test_get_efi_cal_uid_not_found_noindex_test(struct kunit *test)
+{
+ struct cs_amp_lib_test_priv *priv = test->priv;
+ struct cirrus_amp_cal_data result_data;
+ static const u64 bad_target_uid = 0xBADCA100BABABABAULL;
+ int i, ret;
+
+ cs_amp_lib_test_init_dummy_cal_blob(test, 8);
+
+ /* Make all the target values != bad_target_uid */
+ for (i = 0; i < priv->cal_blob->count; ++i) {
+ priv->cal_blob->data[i].calTarget[0] &= ~(bad_target_uid & 0xFFFFFFFFULL);
+ priv->cal_blob->data[i].calTarget[1] &= ~(bad_target_uid >> 32);
+ }
+
+ /* Redirect calls to get EFI data */
+ kunit_activate_static_stub(test,
+ cs_amp_test_hooks->get_efi_variable,
+ cs_amp_lib_test_get_efi_variable);
+
+ ret = cs_amp_get_efi_calibration_data(&priv->amp_pdev.dev, bad_target_uid, -1,
+ &result_data);
+ KUNIT_EXPECT_EQ(test, ret, -ENOENT);
+
+ kunit_deactivate_static_stub(test, cs_amp_test_hooks->get_efi_variable);
+}
+
+/*
+ * If the target UID isn't present in the cal data, and the index is
+ * out of range, the result should be -ENOENT.
+ */
+static void cs_amp_lib_test_get_efi_cal_uid_not_found_index_not_found_test(struct kunit *test)
+{
+ struct cs_amp_lib_test_priv *priv = test->priv;
+ struct cirrus_amp_cal_data result_data;
+ static const u64 bad_target_uid = 0xBADCA100BABABABAULL;
+ int i, ret;
+
+ cs_amp_lib_test_init_dummy_cal_blob(test, 8);
+
+ /* Make all the target values != bad_target_uid */
+ for (i = 0; i < priv->cal_blob->count; ++i) {
+ priv->cal_blob->data[i].calTarget[0] &= ~(bad_target_uid & 0xFFFFFFFFULL);
+ priv->cal_blob->data[i].calTarget[1] &= ~(bad_target_uid >> 32);
+ }
+
+ /* Redirect calls to get EFI data */
+ kunit_activate_static_stub(test,
+ cs_amp_test_hooks->get_efi_variable,
+ cs_amp_lib_test_get_efi_variable);
+
+ ret = cs_amp_get_efi_calibration_data(&priv->amp_pdev.dev, bad_target_uid, 99,
+ &result_data);
+ KUNIT_EXPECT_EQ(test, ret, -ENOENT);
+
+ kunit_deactivate_static_stub(test, cs_amp_test_hooks->get_efi_variable);
+}
+
+/*
+ * If the target UID isn't given, and the index is out of range, the
+ * result should be -ENOENT.
+ */
+static void cs_amp_lib_test_get_efi_cal_no_uid_index_not_found_test(struct kunit *test)
+{
+ struct cs_amp_lib_test_priv *priv = test->priv;
+ struct cirrus_amp_cal_data result_data;
+ int ret;
+
+ cs_amp_lib_test_init_dummy_cal_blob(test, 8);
+
+ /* Redirect calls to get EFI data */
+ kunit_activate_static_stub(test,
+ cs_amp_test_hooks->get_efi_variable,
+ cs_amp_lib_test_get_efi_variable);
+
+ ret = cs_amp_get_efi_calibration_data(&priv->amp_pdev.dev, 0, 99, &result_data);
+ KUNIT_EXPECT_EQ(test, ret, -ENOENT);
+
+ kunit_deactivate_static_stub(test, cs_amp_test_hooks->get_efi_variable);
+}
+
+/* If neither the target UID or the index is given the result should be -ENOENT. */
+static void cs_amp_lib_test_get_efi_cal_no_uid_no_index_test(struct kunit *test)
+{
+ struct cs_amp_lib_test_priv *priv = test->priv;
+ struct cirrus_amp_cal_data result_data;
+ int ret;
+
+ cs_amp_lib_test_init_dummy_cal_blob(test, 8);
+
+ /* Redirect calls to get EFI data */
+ kunit_activate_static_stub(test,
+ cs_amp_test_hooks->get_efi_variable,
+ cs_amp_lib_test_get_efi_variable);
+
+ ret = cs_amp_get_efi_calibration_data(&priv->amp_pdev.dev, 0, -1, &result_data);
+ KUNIT_EXPECT_EQ(test, ret, -ENOENT);
+
+ kunit_deactivate_static_stub(test, cs_amp_test_hooks->get_efi_variable);
+}
+
+/*
+ * If the UID is passed as 0 this must not match an entry with an
+ * unpopulated calTarget
+ */
+static void cs_amp_lib_test_get_efi_cal_zero_not_matched_test(struct kunit *test)
+{
+ struct cs_amp_lib_test_priv *priv = test->priv;
+ struct cirrus_amp_cal_data result_data;
+ int i, ret;
+
+ cs_amp_lib_test_init_dummy_cal_blob(test, 8);
+
+ /* Make all the target values zero so they are ignored */
+ for (i = 0; i < priv->cal_blob->count; ++i) {
+ priv->cal_blob->data[i].calTarget[0] = 0;
+ priv->cal_blob->data[i].calTarget[1] = 0;
+ }
+
+ /* Redirect calls to get EFI data */
+ kunit_activate_static_stub(test,
+ cs_amp_test_hooks->get_efi_variable,
+ cs_amp_lib_test_get_efi_variable);
+
+ ret = cs_amp_get_efi_calibration_data(&priv->amp_pdev.dev, 0, -1, &result_data);
+ KUNIT_EXPECT_EQ(test, ret, -ENOENT);
+
+ kunit_deactivate_static_stub(test, cs_amp_test_hooks->get_efi_variable);
+}
+
+static const struct cirrus_amp_cal_controls cs_amp_lib_test_calibration_controls = {
+ .alg_id = 0x9f210,
+ .mem_region = WMFW_ADSP2_YM,
+ .ambient = "CAL_AMBIENT",
+ .calr = "CAL_R",
+ .status = "CAL_STATUS",
+ .checksum = "CAL_CHECKSUM",
+};
+
+static int cs_amp_lib_test_write_cal_coeff(struct wm_adsp *dsp,
+ const struct cirrus_amp_cal_controls *controls,
+ const char *ctl_name, u32 val)
+{
+ struct kunit *test = kunit_get_current_test();
+ struct cs_amp_lib_test_priv *priv = test->priv;
+ struct cs_amp_lib_test_ctl_write_entry *entry;
+
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctl_name);
+ KUNIT_EXPECT_PTR_EQ(test, controls, &cs_amp_lib_test_calibration_controls);
+
+ entry = kunit_kzalloc(test, sizeof(*entry), GFP_KERNEL);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, entry);
+
+ INIT_LIST_HEAD(&entry->list);
+ strscpy(entry->name, ctl_name, sizeof(entry->name));
+ entry->value = val;
+
+ list_add_tail(&entry->list, &priv->ctl_write_list);
+
+ return 0;
+}
+
+static void cs_amp_lib_test_write_cal_data_test(struct kunit *test)
+{
+ struct cs_amp_lib_test_priv *priv = test->priv;
+ struct cs_amp_lib_test_ctl_write_entry *entry;
+ struct cirrus_amp_cal_data data;
+ struct wm_adsp *dsp;
+ int ret;
+
+ dsp = kunit_kzalloc(test, sizeof(*dsp), GFP_KERNEL);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, dsp);
+ dsp->cs_dsp.dev = &priv->amp_pdev.dev;
+
+ get_random_bytes(&data, sizeof(data));
+
+ /* Redirect calls to write firmware controls */
+ kunit_activate_static_stub(test,
+ cs_amp_test_hooks->write_cal_coeff,
+ cs_amp_lib_test_write_cal_coeff);
+
+ ret = cs_amp_write_cal_coeffs(dsp, &cs_amp_lib_test_calibration_controls, &data);
+ KUNIT_EXPECT_EQ(test, ret, 0);
+
+ kunit_deactivate_static_stub(test, cs_amp_test_hooks->write_cal_coeff);
+
+ KUNIT_EXPECT_EQ(test, list_count_nodes(&priv->ctl_write_list), 4);
+
+ /* Checksum control must be written last */
+ entry = list_last_entry(&priv->ctl_write_list, typeof(*entry), list);
+ KUNIT_EXPECT_STREQ(test, entry->name, cs_amp_lib_test_calibration_controls.checksum);
+ KUNIT_EXPECT_EQ(test, entry->value, data.calR + 1);
+ list_del(&entry->list);
+
+ entry = list_first_entry(&priv->ctl_write_list, typeof(*entry), list);
+ KUNIT_EXPECT_STREQ(test, entry->name, cs_amp_lib_test_calibration_controls.ambient);
+ KUNIT_EXPECT_EQ(test, entry->value, data.calAmbient);
+ list_del(&entry->list);
+
+ entry = list_first_entry(&priv->ctl_write_list, typeof(*entry), list);
+ KUNIT_EXPECT_STREQ(test, entry->name, cs_amp_lib_test_calibration_controls.calr);
+ KUNIT_EXPECT_EQ(test, entry->value, data.calR);
+ list_del(&entry->list);
+
+ entry = list_first_entry(&priv->ctl_write_list, typeof(*entry), list);
+ KUNIT_EXPECT_STREQ(test, entry->name, cs_amp_lib_test_calibration_controls.status);
+ KUNIT_EXPECT_EQ(test, entry->value, data.calStatus);
+}
+
+static void cs_amp_lib_test_dev_release(struct device *dev)
+{
+}
+
+static int cs_amp_lib_test_case_init(struct kunit *test)
+{
+ struct cs_amp_lib_test_priv *priv;
+ int ret;
+
+ KUNIT_ASSERT_NOT_NULL(test, cs_amp_test_hooks);
+
+ priv = kunit_kzalloc(test, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ test->priv = priv;
+ INIT_LIST_HEAD(&priv->ctl_write_list);
+
+ /* Create dummy amp driver dev */
+ priv->amp_pdev.name = "cs_amp_lib_test_drv";
+ priv->amp_pdev.id = -1;
+ priv->amp_pdev.dev.release = cs_amp_lib_test_dev_release;
+ ret = platform_device_register(&priv->amp_pdev);
+ KUNIT_ASSERT_GE_MSG(test, ret, 0, "Failed to register amp platform device\n");
+
+ return 0;
+}
+
+static void cs_amp_lib_test_case_exit(struct kunit *test)
+{
+ struct cs_amp_lib_test_priv *priv = test->priv;
+
+ if (priv->amp_pdev.name)
+ platform_device_unregister(&priv->amp_pdev);
+}
+
+static const struct cs_amp_lib_test_param cs_amp_lib_test_get_cal_param_cases[] = {
+ { .num_amps = 2, .amp_index = 0 },
+ { .num_amps = 2, .amp_index = 1 },
+
+ { .num_amps = 3, .amp_index = 0 },
+ { .num_amps = 3, .amp_index = 1 },
+ { .num_amps = 3, .amp_index = 2 },
+
+ { .num_amps = 4, .amp_index = 0 },
+ { .num_amps = 4, .amp_index = 1 },
+ { .num_amps = 4, .amp_index = 2 },
+ { .num_amps = 4, .amp_index = 3 },
+
+ { .num_amps = 5, .amp_index = 0 },
+ { .num_amps = 5, .amp_index = 1 },
+ { .num_amps = 5, .amp_index = 2 },
+ { .num_amps = 5, .amp_index = 3 },
+ { .num_amps = 5, .amp_index = 4 },
+
+ { .num_amps = 6, .amp_index = 0 },
+ { .num_amps = 6, .amp_index = 1 },
+ { .num_amps = 6, .amp_index = 2 },
+ { .num_amps = 6, .amp_index = 3 },
+ { .num_amps = 6, .amp_index = 4 },
+ { .num_amps = 6, .amp_index = 5 },
+
+ { .num_amps = 8, .amp_index = 0 },
+ { .num_amps = 8, .amp_index = 1 },
+ { .num_amps = 8, .amp_index = 2 },
+ { .num_amps = 8, .amp_index = 3 },
+ { .num_amps = 8, .amp_index = 4 },
+ { .num_amps = 8, .amp_index = 5 },
+ { .num_amps = 8, .amp_index = 6 },
+ { .num_amps = 8, .amp_index = 7 },
+};
+
+static void cs_amp_lib_test_get_cal_param_desc(const struct cs_amp_lib_test_param *param,
+ char *desc)
+{
+ snprintf(desc, KUNIT_PARAM_DESC_SIZE, "num_amps:%d amp_index:%d",
+ param->num_amps, param->amp_index);
+}
+
+KUNIT_ARRAY_PARAM(cs_amp_lib_test_get_cal, cs_amp_lib_test_get_cal_param_cases,
+ cs_amp_lib_test_get_cal_param_desc);
+
+static struct kunit_case cs_amp_lib_test_cases[] = {
+ /* Tests for getting calibration data from EFI */
+ KUNIT_CASE(cs_amp_lib_test_cal_data_too_short_test),
+ KUNIT_CASE(cs_amp_lib_test_cal_count_too_big_test),
+ KUNIT_CASE(cs_amp_lib_test_no_cal_data_test),
+ KUNIT_CASE(cs_amp_lib_test_get_efi_cal_uid_not_found_noindex_test),
+ KUNIT_CASE(cs_amp_lib_test_get_efi_cal_uid_not_found_index_not_found_test),
+ KUNIT_CASE(cs_amp_lib_test_get_efi_cal_no_uid_index_not_found_test),
+ KUNIT_CASE(cs_amp_lib_test_get_efi_cal_no_uid_no_index_test),
+ KUNIT_CASE(cs_amp_lib_test_get_efi_cal_zero_not_matched_test),
+ KUNIT_CASE_PARAM(cs_amp_lib_test_get_efi_cal_by_uid_test,
+ cs_amp_lib_test_get_cal_gen_params),
+ KUNIT_CASE_PARAM(cs_amp_lib_test_get_efi_cal_by_index_unchecked_test,
+ cs_amp_lib_test_get_cal_gen_params),
+ KUNIT_CASE_PARAM(cs_amp_lib_test_get_efi_cal_by_index_checked_test,
+ cs_amp_lib_test_get_cal_gen_params),
+ KUNIT_CASE_PARAM(cs_amp_lib_test_get_efi_cal_by_index_uid_mismatch_test,
+ cs_amp_lib_test_get_cal_gen_params),
+ KUNIT_CASE_PARAM(cs_amp_lib_test_get_efi_cal_by_index_fallback_test,
+ cs_amp_lib_test_get_cal_gen_params),
+
+ /* Tests for writing calibration data */
+ KUNIT_CASE(cs_amp_lib_test_write_cal_data_test),
+
+ { } /* terminator */
+};
+
+static struct kunit_suite cs_amp_lib_test_suite = {
+ .name = "snd-soc-cs-amp-lib-test",
+ .init = cs_amp_lib_test_case_init,
+ .exit = cs_amp_lib_test_case_exit,
+ .test_cases = cs_amp_lib_test_cases,
+};
+
+kunit_test_suite(cs_amp_lib_test_suite);
+
+MODULE_IMPORT_NS(SND_SOC_CS_AMP_LIB);
+MODULE_DESCRIPTION("KUnit test for Cirrus Logic amplifier library");
+MODULE_AUTHOR("Richard Fitzgerald <rf@xxxxxxxxxxxxxxxxxxxxx>");
+MODULE_LICENSE("GPL");
diff --git a/sound/soc/codecs/cs-amp-lib.c b/sound/soc/codecs/cs-amp-lib.c
index 0e1249342a78..a6ac96ecb176 100644
--- a/sound/soc/codecs/cs-amp-lib.c
+++ b/sound/soc/codecs/cs-amp-lib.c
@@ -6,6 +6,7 @@
// Cirrus Logic International Semiconductor Ltd.
#include <asm/byteorder.h>
+#include <kunit/static_stub.h>
#include <linux/dev_printk.h>
#include <linux/efi.h>
#include <linux/module.h>
@@ -26,6 +27,8 @@ static int cs_amp_write_cal_coeff(struct wm_adsp *dsp,
__be32 beval = cpu_to_be32(val);
int ret;
+ KUNIT_STATIC_STUB_REDIRECT(cs_amp_write_cal_coeff, dsp, controls, ctl_name, val);
+
if (IS_REACHABLE(CONFIG_SND_SOC_WM_ADSP)) {
ret = wm_adsp_write_ctl(dsp, ctl_name, controls->mem_region,
controls->alg_id, &beval, sizeof(beval));
@@ -78,7 +81,7 @@ int cs_amp_write_cal_coeffs(struct wm_adsp *dsp,
const struct cirrus_amp_cal_controls *controls,
const struct cirrus_amp_cal_data *data)
{
- if (IS_REACHABLE(CONFIG_SND_SOC_WM_ADSP))
+ if (IS_REACHABLE(CONFIG_SND_SOC_WM_ADSP) || IS_ENABLED(CONFIG_SND_SOC_CS_AMP_LIB_TEST))
return _cs_amp_write_cal_coeffs(dsp, controls, data);
else
return -ENODEV;
@@ -92,6 +95,8 @@ static efi_status_t cs_amp_get_efi_variable(efi_char16_t *name,
{
u32 attr;
+ KUNIT_STATIC_STUB_REDIRECT(cs_amp_get_efi_variable, name, guid, size, buf);
+
if (IS_ENABLED(CONFIG_EFI))
return efi.get_variable(name, guid, &attr, size, buf);
@@ -244,13 +249,22 @@ static int _cs_amp_get_efi_calibration_data(struct device *dev, u64 target_uid,
int cs_amp_get_efi_calibration_data(struct device *dev, u64 target_uid, int amp_index,
struct cirrus_amp_cal_data *out_data)
{
- if (IS_ENABLED(CONFIG_EFI))
+ if (IS_ENABLED(CONFIG_EFI) || IS_ENABLED(CONFIG_SND_SOC_CS_AMP_LIB_TEST))
return _cs_amp_get_efi_calibration_data(dev, target_uid, amp_index, out_data);
else
return -ENOENT;
}
EXPORT_SYMBOL_NS_GPL(cs_amp_get_efi_calibration_data, SND_SOC_CS_AMP_LIB);
+static const struct cs_amp_test_hooks cs_amp_test_hook_ptrs = {
+ .get_efi_variable = cs_amp_get_efi_variable,
+ .write_cal_coeff = cs_amp_write_cal_coeff,
+};
+
+const struct cs_amp_test_hooks * const cs_amp_test_hooks =
+ PTR_IF(IS_ENABLED(CONFIG_SND_SOC_CS_AMP_LIB_TEST), &cs_amp_test_hook_ptrs);
+EXPORT_SYMBOL_NS_GPL(cs_amp_test_hooks, SND_SOC_CS_AMP_LIB);
+
MODULE_DESCRIPTION("Cirrus Logic amplifier library");
MODULE_AUTHOR("Richard Fitzgerald <rf@xxxxxxxxxxxxxxxxxxxxx>");
MODULE_LICENSE("GPL");
--
2.30.2
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