From patchwork Wed Dec 8 21:17:43 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 12665261 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B60B8C433EF for ; Wed, 8 Dec 2021 21:17:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237036AbhLHVVa (ORCPT ); Wed, 8 Dec 2021 16:21:30 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52656 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231419AbhLHVVa (ORCPT ); Wed, 8 Dec 2021 16:21:30 -0500 Received: from sin.source.kernel.org (sin.source.kernel.org [IPv6:2604:1380:40e1:4800::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A12DAC061746 for ; Wed, 8 Dec 2021 13:17:57 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sin.source.kernel.org (Postfix) with ESMTPS id AF98FCE23C2 for ; Wed, 8 Dec 2021 21:17:55 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5A92DC341C3; Wed, 8 Dec 2021 21:17:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1638998273; bh=gYOPKsXJC9JUZ/SD/hIqPbgjRIa4kpkH3WD4Xt15JPM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=KRI+E8ouXZ6DyZItfJqHxzJIfnDXwmcIIoi5TA35IeznK8LFEbnDsTSBPDUqP8nfE b65gZOZcGXFR4r1bnECFAqIRB41DD/VKmDWZvHuwA6z/XqEF7eT4+Xc62HgD386ucM 6efhDD4CFAvalq2Hz9NxMMFRwu9GJn/dbmxO1+MZ+tHo8qX2LyzfEy16ShYh5rktuy XD+3gFHAku290QW/rpopJWUivngQKD7av6eI9O+yRkT3SivS+YuTyz+c0gDK2sfsEi oNn3hH+U12isdBJnKocnhWQ9vG70nygvftwgepz+qmDEDySB7o7HkNpzh4o8BQ9MqK wt27AoxC7dx9A== From: Mark Brown To: Takashi Iwai , Jaroslav Kysela , Shuah Khan Cc: Pierre-Louis Bossart , Takashi Sakamoto , alsa-devel@alsa-project.org, linux-kselftest@vger.kernel.org, Mark Brown , Shuah Khan Subject: [PATCH v3 1/3] kselftest: alsa: Add simplistic test for ALSA mixer controls kselftest Date: Wed, 8 Dec 2021 21:17:43 +0000 Message-Id: <20211208211745.533603-2-broonie@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20211208211745.533603-1-broonie@kernel.org> References: <20211208211745.533603-1-broonie@kernel.org> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=20451; h=from:subject; bh=gYOPKsXJC9JUZ/SD/hIqPbgjRIa4kpkH3WD4Xt15JPM=; b=owEBbQGS/pANAwAKASTWi3JdVIfQAcsmYgBhsSD2zxvpYyXl1YaadQ3qHmEDcv4IJGdN82tdOkhX 6vQQSc2JATMEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCYbEg9gAKCRAk1otyXVSH0LhIB/ 4nt8QwGy8mSdEPkDtl7Sxahy3ZRceImCPlB4ZsXVEW4JXsOfjSJ+FEamrm6q/zYDE3s1zfi/mGTH/W 3Fpal1hxlriZqsaFVSM9lOTOkdkhX2GeG0idJmtY7ekykPWRzbjcgwlP/yHbakFtvWgpqTFrCqod+r bOt7MCfKSx94wJOqVX9myva1lKLIAJKbsEZA5n6IiFGe8MLwNSoj++5cb8u/sjLu39AhNXHAOnobHK w9JbuLkiNVKW6pPbx4oQfzGCiykIEo1mfM6nSFlmKkKeRLIWgYGTj6RF2vyrGsA4DdSeNiMZccyQF9 Z/WhnkEXzNNh+m0tsaXrvmXrFfc4bi X-Developer-Key: i=broonie@kernel.org; a=openpgp; fpr=3F2568AAC26998F9E813A1C5C3F436CA30F5D8EB Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org Add a basic test for the mixer control interface. For every control on every sound card in the system it checks that it can read and write the default value where the control supports that and for writeable controls attempts to write all valid values, restoring the default values after each test to minimise disruption for users. There are quite a few areas for improvement - currently no coverage of the generation of notifications, several of the control types don't have any coverage for the values and we don't have any testing of error handling when we attempt to write out of range values - but this provides some basic coverage. This is added as a kselftest since unlike other ALSA test programs it does not require either physical setup of the device or interactive monitoring by users and kselftest is one of the test suites that is frequently run by people doing general automated testing so should increase coverage. It is written in terms of alsa-lib since tinyalsa is not generally packaged for distributions which makes things harder for general users interested in kselftest as a whole but it will be a barrier to people with Android. Signed-off-by: Mark Brown Reviewed-by: Shuah Khan --- MAINTAINERS | 8 + tools/testing/selftests/Makefile | 3 +- tools/testing/selftests/alsa/.gitignore | 1 + tools/testing/selftests/alsa/Makefile | 9 + tools/testing/selftests/alsa/mixer-test.c | 605 ++++++++++++++++++++++ 5 files changed, 625 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/alsa/.gitignore create mode 100644 tools/testing/selftests/alsa/Makefile create mode 100644 tools/testing/selftests/alsa/mixer-test.c diff --git a/MAINTAINERS b/MAINTAINERS index 7a2345ce8521..8ded9f48b432 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -17805,6 +17805,7 @@ F: Documentation/sound/ F: include/sound/ F: include/uapi/sound/ F: sound/ +F: tools/testing/selftests/alsa SOUND - COMPRESSED AUDIO M: Vinod Koul @@ -17824,6 +17825,13 @@ F: include/sound/dmaengine_pcm.h F: sound/core/pcm_dmaengine.c F: sound/soc/soc-generic-dmaengine-pcm.c +SOUND - ALSA SELFTESTS +M: Mark Brown +L: alsa-devel@alsa-project.org (moderated for non-subscribers) +L: linux-kselftest@vger.kernel.org +S: Supported +F: tools/testing/selftests/alsa + SOUND - SOC LAYER / DYNAMIC AUDIO POWER MANAGEMENT (ASoC) M: Liam Girdwood M: Mark Brown diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile index c852eb40c4f7..d08fe4cfe811 100644 --- a/tools/testing/selftests/Makefile +++ b/tools/testing/selftests/Makefile @@ -1,5 +1,6 @@ # SPDX-License-Identifier: GPL-2.0 -TARGETS = arm64 +TARGETS += alsa +TARGETS += arm64 TARGETS += bpf TARGETS += breakpoints TARGETS += capabilities diff --git a/tools/testing/selftests/alsa/.gitignore b/tools/testing/selftests/alsa/.gitignore new file mode 100644 index 000000000000..3bb7c41266a8 --- /dev/null +++ b/tools/testing/selftests/alsa/.gitignore @@ -0,0 +1 @@ +mixer-test diff --git a/tools/testing/selftests/alsa/Makefile b/tools/testing/selftests/alsa/Makefile new file mode 100644 index 000000000000..f64d9090426d --- /dev/null +++ b/tools/testing/selftests/alsa/Makefile @@ -0,0 +1,9 @@ +# SPDX-License-Identifier: GPL-2.0 +# + +CFLAGS += $(shell pkg-config --cflags alsa) +LDLIBS += $(shell pkg-config --libs alsa) + +TEST_GEN_PROGS := mixer-test + +include ../lib.mk diff --git a/tools/testing/selftests/alsa/mixer-test.c b/tools/testing/selftests/alsa/mixer-test.c new file mode 100644 index 000000000000..ab51cf7b9e03 --- /dev/null +++ b/tools/testing/selftests/alsa/mixer-test.c @@ -0,0 +1,605 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// kselftest for the ALSA mixer API +// +// Original author: Mark Brown +// Copyright (c) 2021 Arm Limited + +// This test will iterate over all cards detected in the system, exercising +// every mixer control it can find. This may conflict with other system +// software if there is audio activity so is best run on a system with a +// minimal active userspace. + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "../kselftest.h" + +#define TESTS_PER_CONTROL 3 + +struct card_data { + snd_ctl_t *handle; + int card; + int num_ctls; + snd_ctl_elem_list_t *ctls; + struct card_data *next; +}; + +struct ctl_data { + const char *name; + snd_ctl_elem_id_t *id; + snd_ctl_elem_info_t *info; + snd_ctl_elem_value_t *def_val; + int elem; + struct card_data *card; + struct ctl_data *next; +}; + +int num_cards = 0; +int num_controls = 0; +struct card_data *card_list = NULL; +struct ctl_data *ctl_list = NULL; + +void find_controls(void) +{ + char name[32]; + int card, ctl, err; + struct card_data *card_data; + struct ctl_data *ctl_data; + + card = -1; + if (snd_card_next(&card) < 0 || card < 0) + return; + + while (card >= 0) { + sprintf(name, "hw:%d", card); + + card_data = malloc(sizeof(*card_data)); + if (!card_data) + ksft_exit_fail_msg("Out of memory\n"); + + err = snd_ctl_open(&card_data->handle, name, 0); + if (err < 0) { + ksft_print_msg("Failed to get hctl for card %d: %s\n", + card, snd_strerror(err)); + goto next_card; + } + + /* Count controls */ + snd_ctl_elem_list_malloc(&card_data->ctls); + snd_ctl_elem_list(card_data->handle, card_data->ctls); + card_data->num_ctls = snd_ctl_elem_list_get_count(card_data->ctls); + + /* Enumerate control information */ + snd_ctl_elem_list_alloc_space(card_data->ctls, card_data->num_ctls); + snd_ctl_elem_list(card_data->handle, card_data->ctls); + + card_data->card = num_cards++; + card_data->next = card_list; + card_list = card_data; + + num_controls += card_data->num_ctls; + + for (ctl = 0; ctl < card_data->num_ctls; ctl++) { + ctl_data = malloc(sizeof(*ctl_data)); + if (!ctl_data) + ksft_exit_fail_msg("Out of memory\n"); + + ctl_data->card = card_data; + ctl_data->elem = ctl; + ctl_data->name = snd_ctl_elem_list_get_name(card_data->ctls, + ctl); + + err = snd_ctl_elem_id_malloc(&ctl_data->id); + if (err < 0) + ksft_exit_fail_msg("Out of memory\n"); + + err = snd_ctl_elem_info_malloc(&ctl_data->info); + if (err < 0) + ksft_exit_fail_msg("Out of memory\n"); + + err = snd_ctl_elem_value_malloc(&ctl_data->def_val); + if (err < 0) + ksft_exit_fail_msg("Out of memory\n"); + + snd_ctl_elem_list_get_id(card_data->ctls, ctl, + ctl_data->id); + snd_ctl_elem_info_set_id(ctl_data->info, ctl_data->id); + err = snd_ctl_elem_info(card_data->handle, + ctl_data->info); + if (err < 0) { + ksft_print_msg("%s getting info for %d\n", + snd_strerror(err), + ctl_data->name); + } + + snd_ctl_elem_value_set_id(ctl_data->def_val, + ctl_data->id); + + ctl_data->next = ctl_list; + ctl_list = ctl_data; + } + + next_card: + if (snd_card_next(&card) < 0) { + ksft_print_msg("snd_card_next"); + break; + } + } +} + +/* + * Check that we can read the default value and it is valid. Write + * tests use the read value to restore the default. + */ +void test_ctl_get_value(struct ctl_data *ctl) +{ + int err; + long int_val; + long long int64_val; + + /* If the control is turned off let's be polite */ + if (snd_ctl_elem_info_is_inactive(ctl->info)) { + ksft_print_msg("%s is inactive\n", ctl->name); + ksft_test_result_skip("get_value.%d.%d\n", + ctl->card->card, ctl->elem); + return; + } + + /* Can't test reading on an unreadable control */ + if (!snd_ctl_elem_info_is_readable(ctl->info)) { + ksft_print_msg("%s is not readable\n", ctl->name); + ksft_test_result_skip("get_value.%d.%d\n", + ctl->card->card, ctl->elem); + return; + } + + err = snd_ctl_elem_read(ctl->card->handle, ctl->def_val); + if (err < 0) { + ksft_print_msg("snd_ctl_elem_read() failed: %s\n", + snd_strerror(err)); + goto out; + } + + switch (snd_ctl_elem_info_get_type(ctl->info)) { + case SND_CTL_ELEM_TYPE_NONE: + ksft_print_msg("%s Invalid control type NONE\n", ctl->name); + err = -1; + break; + + case SND_CTL_ELEM_TYPE_BOOLEAN: + int_val = snd_ctl_elem_value_get_boolean(ctl->def_val, 0); + switch (int_val) { + case 0: + case 1: + break; + default: + ksft_print_msg("%s Invalid boolean value %ld\n", + ctl->name, int_val); + err = -1; + break; + } + break; + + case SND_CTL_ELEM_TYPE_INTEGER: + int_val = snd_ctl_elem_value_get_integer(ctl->def_val, 0); + + if (int_val < snd_ctl_elem_info_get_min(ctl->info)) { + ksft_print_msg("%s value %ld less than minimum %ld\n", + ctl->name, int_val, + snd_ctl_elem_info_get_min(ctl->info)); + err = -1; + } + + if (int_val > snd_ctl_elem_info_get_max(ctl->info)) { + ksft_print_msg("%s value %ld more than maximum %ld\n", + ctl->name, int_val, + snd_ctl_elem_info_get_max(ctl->info)); + err = -1; + } + + /* Only check step size if there is one and we're in bounds */ + if (err >= 0 && snd_ctl_elem_info_get_step(ctl->info) && + (int_val - snd_ctl_elem_info_get_min(ctl->info) % + snd_ctl_elem_info_get_step(ctl->info))) { + ksft_print_msg("%s value %ld invalid for step %ld minimum %ld\n", + ctl->name, int_val, + snd_ctl_elem_info_get_step(ctl->info), + snd_ctl_elem_info_get_min(ctl->info)); + err = -1; + } + break; + + case SND_CTL_ELEM_TYPE_INTEGER64: + int64_val = snd_ctl_elem_value_get_integer64(ctl->def_val, 0); + + if (int64_val < snd_ctl_elem_info_get_min64(ctl->info)) { + ksft_print_msg("%s value %lld less than minimum %lld\n", + ctl->name, int64_val, + snd_ctl_elem_info_get_min64(ctl->info)); + err = -1; + } + + if (int64_val > snd_ctl_elem_info_get_max64(ctl->info)) { + ksft_print_msg("%s value %lld more than maximum %lld\n", + ctl->name, int64_val, + snd_ctl_elem_info_get_max(ctl->info)); + err = -1; + } + + /* Only check step size if there is one and we're in bounds */ + if (err >= 0 && snd_ctl_elem_info_get_step64(ctl->info) && + (int64_val - snd_ctl_elem_info_get_min64(ctl->info)) % + snd_ctl_elem_info_get_step64(ctl->info)) { + ksft_print_msg("%s value %lld invalid for step %lld minimum %lld\n", + ctl->name, int64_val, + snd_ctl_elem_info_get_step64(ctl->info), + snd_ctl_elem_info_get_min64(ctl->info)); + err = -1; + } + break; + + default: + /* No tests for other types */ + ksft_test_result_skip("get_value.%d.%d\n", + ctl->card->card, ctl->elem); + return; + } + +out: + ksft_test_result(err >= 0, "get_value.%d.%d\n", + ctl->card->card, ctl->elem); +} + +bool show_mismatch(struct ctl_data *ctl, int index, + snd_ctl_elem_value_t *read_val, + snd_ctl_elem_value_t *expected_val) +{ + long long expected_int, read_int; + + /* + * We factor out the code to compare values representable as + * integers, ensure that check doesn't log otherwise. + */ + expected_int = 0; + read_int = 0; + + switch (snd_ctl_elem_info_get_type(ctl->info)) { + case SND_CTL_ELEM_TYPE_BOOLEAN: + expected_int = snd_ctl_elem_value_get_boolean(expected_val, + index); + read_int = snd_ctl_elem_value_get_boolean(read_val, index); + break; + + case SND_CTL_ELEM_TYPE_INTEGER: + expected_int = snd_ctl_elem_value_get_integer(expected_val, + index); + read_int = snd_ctl_elem_value_get_integer(read_val, index); + break; + + case SND_CTL_ELEM_TYPE_INTEGER64: + expected_int = snd_ctl_elem_value_get_integer64(expected_val, + index); + read_int = snd_ctl_elem_value_get_integer64(read_val, + index); + break; + + case SND_CTL_ELEM_TYPE_ENUMERATED: + expected_int = snd_ctl_elem_value_get_enumerated(expected_val, + index); + read_int = snd_ctl_elem_value_get_enumerated(read_val, + index); + break; + + default: + break; + } + + if (expected_int != read_int) { + ksft_print_msg("%s.%d expected %lld but read %lld\n", + ctl->name, index, expected_int, read_int); + return true; + } else { + return false; + } +} + +/* + * Write a value then if possible verify that we get the expected + * result. An optional expected value can be provided if we expect + * the write to fail, for verifying that invalid writes don't corrupt + * anything. + */ +int write_and_verify(struct ctl_data *ctl, + snd_ctl_elem_value_t *write_val, + snd_ctl_elem_value_t *expected_val) +{ + int err, i; + bool error_expected, mismatch_shown; + snd_ctl_elem_value_t *read_val, *w_val; + snd_ctl_elem_value_alloca(&read_val); + snd_ctl_elem_value_alloca(&w_val); + + /* + * We need to copy the write value since writing can modify + * the value which causes surprises, and allocate an expected + * value if we expect to read back what we wrote. + */ + snd_ctl_elem_value_copy(w_val, write_val); + if (expected_val) { + error_expected = true; + } else { + error_expected = false; + snd_ctl_elem_value_alloca(&expected_val); + snd_ctl_elem_value_copy(expected_val, write_val); + } + + /* + * Do the write, if we have an expected value ignore the error + * and carry on to validate the expected value. + */ + err = snd_ctl_elem_write(ctl->card->handle, w_val); + if (err < 0 && !error_expected) { + ksft_print_msg("snd_ctl_elem_write() failed: %s\n", + snd_strerror(err)); + return err; + } + + /* Can we do the verification part? */ + if (!snd_ctl_elem_info_is_readable(ctl->info)) + return err; + + snd_ctl_elem_value_set_id(read_val, ctl->id); + + err = snd_ctl_elem_read(ctl->card->handle, read_val); + if (err < 0) { + ksft_print_msg("snd_ctl_elem_read() failed: %s\n", + snd_strerror(err)); + return err; + } + + /* + * Use the libray to compare values, if there's a mismatch + * carry on and try to provide a more useful diagnostic than + * just "mismatch". + */ + if (!snd_ctl_elem_value_compare(expected_val, read_val)) + return 0; + + mismatch_shown = false; + for (i = 0; i < snd_ctl_elem_info_get_count(ctl->info); i++) + if (show_mismatch(ctl, i, read_val, expected_val)) + mismatch_shown = true; + + if (!mismatch_shown) + ksft_print_msg("%s read and written values differ\n", + ctl->name); + + return -1; +} + +/* + * Make sure we can write the default value back to the control, this + * should validate that at least some write works. + */ +void test_ctl_write_default(struct ctl_data *ctl) +{ + int err; + + /* If the control is turned off let's be polite */ + if (snd_ctl_elem_info_is_inactive(ctl->info)) { + ksft_print_msg("%s is inactive\n", ctl->name); + ksft_test_result_skip("write_default.%d.%d\n", + ctl->card->card, ctl->elem); + return; + } + + if (!snd_ctl_elem_info_is_writable(ctl->info)) { + ksft_print_msg("%s is not writeable\n", ctl->name); + ksft_test_result_skip("write_default.%d.%d\n", + ctl->card->card, ctl->elem); + return; + } + + /* No idea what the default was for unreadable controls */ + if (!snd_ctl_elem_info_is_readable(ctl->info)) { + ksft_print_msg("%s couldn't read default\n", ctl->name); + ksft_test_result_skip("write_default.%d.%d\n", + ctl->card->card, ctl->elem); + return; + } + + err = write_and_verify(ctl, ctl->def_val, NULL); + + ksft_test_result(err >= 0, "write_default.%d.%d\n", + ctl->card->card, ctl->elem); +} + +bool test_ctl_write_valid_boolean(struct ctl_data *ctl) +{ + int err, i, j; + bool fail = false; + snd_ctl_elem_value_t *val; + snd_ctl_elem_value_alloca(&val); + + snd_ctl_elem_value_set_id(val, ctl->id); + + for (i = 0; i < snd_ctl_elem_info_get_count(ctl->info); i++) { + for (j = 0; j < 2; j++) { + snd_ctl_elem_value_set_boolean(val, i, j); + err = write_and_verify(ctl, val, NULL); + if (err != 0) + fail = true; + } + } + + return !fail; +} + +bool test_ctl_write_valid_integer(struct ctl_data *ctl) +{ + int err; + int i; + long j, step; + bool fail = false; + snd_ctl_elem_value_t *val; + snd_ctl_elem_value_alloca(&val); + + snd_ctl_elem_value_set_id(val, ctl->id); + + step = snd_ctl_elem_info_get_step(ctl->info); + if (!step) + step = 1; + + for (i = 0; i < snd_ctl_elem_info_get_count(ctl->info); i++) { + for (j = snd_ctl_elem_info_get_min(ctl->info); + j <= snd_ctl_elem_info_get_max(ctl->info); j += step) { + + snd_ctl_elem_value_set_integer(val, i, j); + err = write_and_verify(ctl, val, NULL); + if (err != 0) + fail = true; + } + } + + + return !fail; +} + +bool test_ctl_write_valid_integer64(struct ctl_data *ctl) +{ + int err, i; + long long j, step; + bool fail = false; + snd_ctl_elem_value_t *val; + snd_ctl_elem_value_alloca(&val); + + snd_ctl_elem_value_set_id(val, ctl->id); + + step = snd_ctl_elem_info_get_step64(ctl->info); + if (!step) + step = 1; + + for (i = 0; i < snd_ctl_elem_info_get_count(ctl->info); i++) { + for (j = snd_ctl_elem_info_get_min64(ctl->info); + j <= snd_ctl_elem_info_get_max64(ctl->info); j += step) { + + snd_ctl_elem_value_set_integer64(val, i, j); + err = write_and_verify(ctl, val, NULL); + if (err != 0) + fail = true; + } + } + + return !fail; +} + +bool test_ctl_write_valid_enumerated(struct ctl_data *ctl) +{ + int err, i, j; + bool fail = false; + snd_ctl_elem_value_t *val; + snd_ctl_elem_value_alloca(&val); + + snd_ctl_elem_value_set_id(val, ctl->id); + + for (i = 0; i < snd_ctl_elem_info_get_count(ctl->info); i++) { + for (j = 0; j < snd_ctl_elem_info_get_items(ctl->info); j++) { + snd_ctl_elem_value_set_enumerated(val, i, j); + err = write_and_verify(ctl, val, NULL); + if (err != 0) + fail = true; + } + } + + return !fail; +} + +void test_ctl_write_valid(struct ctl_data *ctl) +{ + bool pass; + int err; + + /* If the control is turned off let's be polite */ + if (snd_ctl_elem_info_is_inactive(ctl->info)) { + ksft_print_msg("%s is inactive\n", ctl->name); + ksft_test_result_skip("write_valid.%d.%d\n", + ctl->card->card, ctl->elem); + return; + } + + if (!snd_ctl_elem_info_is_writable(ctl->info)) { + ksft_print_msg("%s is not writeable\n", ctl->name); + ksft_test_result_skip("write_valid.%d.%d\n", + ctl->card->card, ctl->elem); + return; + } + + switch (snd_ctl_elem_info_get_type(ctl->info)) { + case SND_CTL_ELEM_TYPE_BOOLEAN: + pass = test_ctl_write_valid_boolean(ctl); + break; + + case SND_CTL_ELEM_TYPE_INTEGER: + pass = test_ctl_write_valid_integer(ctl); + break; + + case SND_CTL_ELEM_TYPE_INTEGER64: + pass = test_ctl_write_valid_integer64(ctl); + break; + + case SND_CTL_ELEM_TYPE_ENUMERATED: + pass = test_ctl_write_valid_enumerated(ctl); + break; + + default: + /* No tests for this yet */ + ksft_test_result_skip("write_valid.%d.%d\n", + ctl->card->card, ctl->elem); + return; + } + + /* Restore the default value to minimise disruption */ + err = write_and_verify(ctl, ctl->def_val, NULL); + if (err < 0) + pass = false; + + ksft_test_result(pass, "write_valid.%d.%d\n", + ctl->card->card, ctl->elem); +} + +int main(void) +{ + struct ctl_data *ctl; + + ksft_print_header(); + + find_controls(); + + ksft_set_plan(num_controls * TESTS_PER_CONTROL); + + for (ctl = ctl_list; ctl != NULL; ctl = ctl->next) { + /* + * Must test get_value() before we write anything, the + * test stores the default value for later cleanup. + */ + test_ctl_get_value(ctl); + test_ctl_write_default(ctl); + test_ctl_write_valid(ctl); + } + + ksft_exit_pass(); + + return 0; +} From patchwork Wed Dec 8 21:17:44 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 12665263 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5B319C433FE for ; Wed, 8 Dec 2021 21:17:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237037AbhLHVVb (ORCPT ); Wed, 8 Dec 2021 16:21:31 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52658 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231419AbhLHVVa (ORCPT ); Wed, 8 Dec 2021 16:21:30 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 82886C061746 for ; Wed, 8 Dec 2021 13:17:58 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 45148B822DB for ; Wed, 8 Dec 2021 21:17:57 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 32679C341CA; Wed, 8 Dec 2021 21:17:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1638998276; bh=ZpZe4S9g6+9K/niZOHt6MFgbYLGRbm9ZPNUG1vDHhUs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=av5FyYFhxbkE5uyrlJbWdGps3XUQeE4j6C/FdRChirF8XmQM72OrtcA7BP5GrE0gR JKECUbw5LzTTTl4VVzDozJlmTYqicI9XMgSbdlSa9GhHXgVoXniK/OpSzREwBIyx7Z tGpXb/pUjXvvNZpDslHqbO3b/pL5d76ujvBVXCWGHqjxGu584ku8/sOYGNSavpyBfU c3m0G1MvtxoPMfl3vnP1gysUUHSO/NJgqnAweC8HqpMAK3Em/kbDBRdeW8OG5Yn3C0 MPBVgURitPJTW/It8APiwxzoCjpZAHkfUc6rwOMCizNE8lHzf67v222OE1eyt4ttwE 58Q0q4eLTURHQ== From: Mark Brown To: Takashi Iwai , Jaroslav Kysela , Shuah Khan Cc: Pierre-Louis Bossart , Takashi Sakamoto , alsa-devel@alsa-project.org, linux-kselftest@vger.kernel.org, Mark Brown Subject: [PATCH v3 2/3] kselftest: alsa: optimization for SNDRV_CTL_ELEM_ACCESS_VOLATILE Date: Wed, 8 Dec 2021 21:17:44 +0000 Message-Id: <20211208211745.533603-3-broonie@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20211208211745.533603-1-broonie@kernel.org> References: <20211208211745.533603-1-broonie@kernel.org> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1825; i=broonie@kernel.org; h=from:subject; bh=PNhi0HaclmY3tvqaRA3cxAHo56f/6hUNXvdxt2Zcq+Q=; b=owEBbAGT/pANAwAKASTWi3JdVIfQAcsmYgBhsSD3eu8xGXcFy0nhWMHOgf1rSAnPvDqKKgBbFmd0 M9gsyT6JATIEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCYbEg9wAKCRAk1otyXVSH0HODB/ d6q/FH7FGeD899VRbb9BLh6S+4V4h33apyDiW8/ImgDm2LHrMNXMWIJEfxYNwTcJjeWFmvuVXK7qZd F0wvXKahbhrqmtNAS7yanjrak0cARns61eyQqASwYhbBGCabv0ttXqOMjftSVC8D2eg7rqHAqtJcdS rBpG6nFwkpwkhTCJ4aWI0wBWuk8jFrlGIxuZxj+mNEUzFt4ozKpNmk7XYnBtTmtxbSvPq41bYVUIzJ ODEakiwcX4bKa/rgKlXT06tBhJ9fNtfpOsTOjZETYfON6sdyFiYHyux2MHMjOGLuMoRCJ7Tdcu0gVQ 09H5ejGEqB/Su+GI51nTDaJth+70g= X-Developer-Key: i=broonie@kernel.org; a=openpgp; fpr=3F2568AAC26998F9E813A1C5C3F436CA30F5D8EB Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org From: Takashi Sakamoto The volatile attribute of control element means that the hardware can voluntarily change the state of control element independent of any operation by software. ALSA control core necessarily sends notification to userspace subscribers for any change from userspace application, while it doesn't for the hardware's voluntary change. This commit adds optimization for the attribute. Even if read value is different from written value, the test reports success as long as the target control element has the attribute. On the other hand, the difference is itself reported for developers' convenience. Signed-off-by: Takashi Sakamoto Link: https://lore.kernel.org/r/Ya7TAHdMe9i41bsC@workstation Signed-off-by: Mark Brown Reviewed-by: Shuah Khan --- tools/testing/selftests/alsa/mixer-test.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/tools/testing/selftests/alsa/mixer-test.c b/tools/testing/selftests/alsa/mixer-test.c index ab51cf7b9e03..171d33692c7b 100644 --- a/tools/testing/selftests/alsa/mixer-test.c +++ b/tools/testing/selftests/alsa/mixer-test.c @@ -307,9 +307,13 @@ bool show_mismatch(struct ctl_data *ctl, int index, } if (expected_int != read_int) { - ksft_print_msg("%s.%d expected %lld but read %lld\n", - ctl->name, index, expected_int, read_int); - return true; + // NOTE: The volatile attribute means that the hardware can voluntarily change the + // state of control element independent of any operation by software. + bool is_volatile = snd_ctl_elem_info_is_volatile(ctl->info); + + ksft_print_msg("%s.%d expected %lld but read %lld, is_volatile %d\n", + ctl->name, index, expected_int, read_int, is_volatile); + return !is_volatile; } else { return false; } From patchwork Wed Dec 8 21:17:45 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 12665265 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8CE70C433F5 for ; Wed, 8 Dec 2021 21:18:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237040AbhLHVVd (ORCPT ); Wed, 8 Dec 2021 16:21:33 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52668 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231419AbhLHVVd (ORCPT ); Wed, 8 Dec 2021 16:21:33 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A6E05C061746 for ; Wed, 8 Dec 2021 13:18:00 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 71BAFB822E0 for ; Wed, 8 Dec 2021 21:17:59 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 72D02C341C7; Wed, 8 Dec 2021 21:17:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1638998278; bh=Bc0lu4qiZTB48rR3MkFZ7RgJ7f79eVaOiiX8CvqQB1I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Vh4u+Eu4vm8Dp7cgvC5QdxxfJSQeFy1z/Cc77n8NfN6C2ibgoUg5l1SPLfVZEB643 XRlMeustlQOG5mUbUshrZINcfgVAQhBY3hmBmVgUCDKiEXEs8WKiHPIQ6pBBH2urkE 9WRjsE1R+BeffuerhQQq4kxaYmW2TTfdhDqKpX7b8aoEf0z2OyR7R2/vpca86Qv9m1 72+2WGVjwSJZN/X/8Z1bjCzE0xfHrXzHG9xYBtj+IgiPTMlZcA/u1TWxOJJ5UNgCQk qwUctuh5lwiXynZ6Oz6o8guVFb0t7rYa0JLLEjSQWr/e7S8axCAhonWvjRQSUMeSOT aXrfR5G/AdQqA== From: Mark Brown To: Takashi Iwai , Jaroslav Kysela , Shuah Khan Cc: Pierre-Louis Bossart , Takashi Sakamoto , alsa-devel@alsa-project.org, linux-kselftest@vger.kernel.org, Mark Brown Subject: [PATCH v3 3/3] kselftest: alsa: Use private alsa-lib configuration in mixer test Date: Wed, 8 Dec 2021 21:17:45 +0000 Message-Id: <20211208211745.533603-4-broonie@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20211208211745.533603-1-broonie@kernel.org> References: <20211208211745.533603-1-broonie@kernel.org> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2881; i=broonie@kernel.org; h=from:subject; bh=vfQBJ8nhILzQt7bp6al4mErrBsurvMvk0ZXwkvtk2YI=; b=owEBbQGS/pANAwAKASTWi3JdVIfQAcsmYgBhsSD4gULYOlkDuYb0Oa/ILDyKH5LnDzv5YJpnB9Lk 4S/vYlSJATMEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCYbEg+AAKCRAk1otyXVSH0PMeB/ 0ZM9xwVWpiKaTWaPx8YOiLaCs0XUSLy8wUEBqh08UYL+XBdlckQ9Q2rg81SZP+08HCNqBb6Qs/DBVy Hfhkbp9ao/w36vDWtYBxO+BPh1RJQ7bjtXhQGYtCXRE3mL98mnuQmfHM6SxXMk77xV0u7CA33V9NMi nw19DO9Q3JH+cZzrLPT5ZG2J1e8TKACvVuVmk/8uWDWoOwNVE+lMv0NTmfm2905B2+5P/v9VrF7vyQ mRTGD/Zsd91wOi6bSSDvKeJcTu9YSTPOkXr29tRxukXBF1ffHIiBTErmUrqpDbrFa4JOVkmgZw95j7 2uRXP/bdaJcdbUo3xEvoi+lfpkCGMr X-Developer-Key: i=broonie@kernel.org; a=openpgp; fpr=3F2568AAC26998F9E813A1C5C3F436CA30F5D8EB Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org From: Jaroslav Kysela As mentined by Takashi Sakamoto, the system-wide alsa-lib configuration may override the standard device declarations. This patch use the private alsa-lib configuration to set the predictable environment. Signed-off-by: Jaroslav Kysela Link: https://lore.kernel.org/r/20211208095209.1772296-1-perex@perex.cz [Restructure version test to keep the preprocessor happy -- broonie] Signed-off-by: Mark Brown Reviewed-by: Shuah Khan --- tools/testing/selftests/alsa/mixer-test.c | 56 ++++++++++++++++++++++- 1 file changed, 55 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/alsa/mixer-test.c b/tools/testing/selftests/alsa/mixer-test.c index 171d33692c7b..a177676c530e 100644 --- a/tools/testing/selftests/alsa/mixer-test.c +++ b/tools/testing/selftests/alsa/mixer-test.c @@ -46,22 +46,74 @@ struct ctl_data { struct ctl_data *next; }; +static const char *alsa_config = +"ctl.hw {\n" +" @args [ CARD ]\n" +" @args.CARD.type string\n" +" type hw\n" +" card $CARD\n" +"}\n" +; + int num_cards = 0; int num_controls = 0; struct card_data *card_list = NULL; struct ctl_data *ctl_list = NULL; +#ifdef SND_LIB_VER +#if SND_LIB_VERSION >= SND_LIB_VER(1, 2, 6) +#define LIB_HAS_LOAD_STRING +#endif +#endif + +#ifndef LIB_HAS_LOAD_STRING +int snd_config_load_string(snd_config_t **config, const char *s, size_t size) +{ + snd_input_t *input; + snd_config_t *dst; + int err; + + assert(config && s); + if (size == 0) + size = strlen(s); + err = snd_input_buffer_open(&input, s, size); + if (err < 0) + return err; + err = snd_config_top(&dst); + if (err < 0) { + snd_input_close(input); + return err; + } + err = snd_config_load(dst, input); + snd_input_close(input); + if (err < 0) { + snd_config_delete(dst); + return err; + } + *config = dst; + return 0; +} +#endif + void find_controls(void) { char name[32]; int card, ctl, err; struct card_data *card_data; struct ctl_data *ctl_data; + snd_config_t *config; card = -1; if (snd_card_next(&card) < 0 || card < 0) return; + err = snd_config_load_string(&config, alsa_config, strlen(alsa_config)); + if (err < 0) { + ksft_print_msg("Unable to parse custom alsa-lib configuration: %s\n", + snd_strerror(err)); + ksft_exit_fail(); + } + while (card >= 0) { sprintf(name, "hw:%d", card); @@ -69,7 +121,7 @@ void find_controls(void) if (!card_data) ksft_exit_fail_msg("Out of memory\n"); - err = snd_ctl_open(&card_data->handle, name, 0); + err = snd_ctl_open_lconf(&card_data->handle, name, 0, config); if (err < 0) { ksft_print_msg("Failed to get hctl for card %d: %s\n", card, snd_strerror(err)); @@ -137,6 +189,8 @@ void find_controls(void) break; } } + + snd_config_delete(config); } /*