From patchwork Fri Dec 10 18:54:08 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 522913 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 BBB5BC4167D for ; Fri, 10 Dec 2021 18:54:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S245647AbhLJS6B (ORCPT ); Fri, 10 Dec 2021 13:58:01 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35324 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S245661AbhLJS56 (ORCPT ); Fri, 10 Dec 2021 13:57:58 -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 242E8C061746 for ; Fri, 10 Dec 2021 10:54:23 -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 C1AFFB8298D for ; Fri, 10 Dec 2021 18:54:21 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2D323C341CA; Fri, 10 Dec 2021 18:54:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1639162460; bh=gYOPKsXJC9JUZ/SD/hIqPbgjRIa4kpkH3WD4Xt15JPM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ZRtSPbwI8lWo8XFzLtKPFCriXE9UphNM/A4EeC89woUV6r4aW30+l0ozPo3NaCyvN cTrZwNLlOCaXUihyAJFjTDQOjJgKfRBdQc+8MwP7IQ0hTKA33llbR4Jf4v7gNkRVz4 0CH5Eit0F0dfTLYAh2VuILAO4gd/FNm20tQlNJ46+JlgqlxpTb9YeBLo0EyiwIDi64 BykpDaUB3h6ggwHHUDWet5y8AhRpifTzdDcbh3Mg4WCiSxIt/NHVzf5uVY7JIShuF3 giHKFOSq/x/9b7t6PhbE8nKuDq7undf7Hqi8LbU7aD6ZJneCRv6bjuuNHpQscBSAzR Ajhm1+rJ8Ap/A== 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 v4 1/3] kselftest: alsa: Add simplistic test for ALSA mixer controls kselftest Date: Fri, 10 Dec 2021 18:54:08 +0000 Message-Id: <20211210185410.740009-2-broonie@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20211210185410.740009-1-broonie@kernel.org> References: <20211210185410.740009-1-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/pANAwAKASTWi3JdVIfQAcsmYgBhs6JOzxvpYyXl1YaadQ3qHmEDcv4IJGdN82tdOkhX 6vQQSc2JATMEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCYbOiTgAKCRAk1otyXVSH0MW3B/ 0fPTHtJzhGQquU6uZ+r7lPvOSIemF4NUev3n0IfLkhHI2oxEZfo5Qd/adXg/ZhmKPGzxfXE2zqQeIR c2movUouo06i8IRb2nE1aQl//niMCU0l0iX39mxP8I/9Ds7gvmtJFjg87hMX7GeUc7j5npFf3E5aLj o6PisKxxADjI8hcD6J3bFOr5Ohq+z3YV32LRHUBZtgV6eLoIJZH56bo6QrBTNjbwrvkskQmRANf/KC 1j4XqjMj3t9ebFPxCXnuTGNn0Z3kdpAqcBEK8fWa1APaWuvSg/CrrSwjViExO/H4MxxayM7hJm01gc XddkNaxhUOdoAuB8pDl00taNeawFp9 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 Fri Dec 10 18:54:09 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 523789 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 544FAC433FE for ; Fri, 10 Dec 2021 18:54:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S245661AbhLJS6C (ORCPT ); Fri, 10 Dec 2021 13:58:02 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35340 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S245670AbhLJS6B (ORCPT ); Fri, 10 Dec 2021 13:58:01 -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 9F1D5C0617A1 for ; Fri, 10 Dec 2021 10:54:25 -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 66EA8B8298E for ; Fri, 10 Dec 2021 18:54:24 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 15E3AC341C7; Fri, 10 Dec 2021 18:54:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1639162463; bh=rohsPdVVVR9EdevsE/V/GrFKcu2ngPnD5UWW/wpylE0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=BzIxwZk+DITCW30wfmUKbqOGJX4HTafUAe3dHGKFLZJAvt6O4ZStY0P7gyk1yoWhA 0CvcLzLfd7biSWv27oOLKUeOUbbCjAsG0wXcQtjk1viMjoHPu/rbQ7GS5nkvD8HOyw IKtX80G5oz34e87DN3PGn52lhN5FsY3BnFkwlRmv89+/gHsHSWXZmy1HQvAcfpKuA2 pqMY19Q9Xu2yIpMOsiPEMHYGN1t3PGzivDq+IjQEmdPXe4xXR/KEc3KvsGCTiEfz+C cl1v4CAiqUuMDN8Z8moeC7MTZEl+Y7uVIDh0D+BCKD95TUFZveMXVKzhlDelg3aH9v CZ11besCOGCvg== 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, Shuah Khan , Mark Brown Subject: [PATCH v4 2/3] kselftest: alsa: optimization for SNDRV_CTL_ELEM_ACCESS_VOLATILE Date: Fri, 10 Dec 2021 18:54:09 +0000 Message-Id: <20211210185410.740009-3-broonie@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20211210185410.740009-1-broonie@kernel.org> References: <20211210185410.740009-1-broonie@kernel.org> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1955; i=broonie@kernel.org; h=from:subject; bh=KiZKlxbVF1zb5VsBrhgN0JQrdG+LGi2hP5TTfQ4nqY8=; b=owEBbQGS/pANAwAKASTWi3JdVIfQAcsmYgBhs6JP/y/vzqH2TrApPXd/uop9W8pDfPqPgrnVZMps G136DteJATMEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCYbOiTwAKCRAk1otyXVSH0CYCB/ 9BPfCV7GbUpSfjWK21CuxoL+a5B8lj5rwFHdSO9HVoorkax3/yAbvQSWkmnAiNIIBUZFmDGkwPlMpv TulNRwQl1PxTOz1GFLLItnSMvbih9Pbsj7cmeRuNPpaOiIs+o0eMr9L5qMY5IwdE+uZDlE1CgPkuYO 1rVvWvUUAt3t0AY1QDJAQgbhZNuCy2Sw1dk5OU42qWmPrwaoXguIV2IbU1D/WCyuTH9fKRSHFxSmio J4rMgd2ajrzTYK+SS9NoVhTrq/N6upBw+TKIAYjKOaA13gDHBDMoO8RxcYcFFTyZkD/0qsuOvxdGbo 7Jtm117Znt+RkZwUBqwotvJJ7ML5V0 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 [Fix comment style as suggested by Shuah -- broonie] Reviewed-by: Shuah Khan Signed-off-by: Mark Brown --- tools/testing/selftests/alsa/mixer-test.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/tools/testing/selftests/alsa/mixer-test.c b/tools/testing/selftests/alsa/mixer-test.c index ab51cf7b9e03..f65a9046e708 100644 --- a/tools/testing/selftests/alsa/mixer-test.c +++ b/tools/testing/selftests/alsa/mixer-test.c @@ -307,9 +307,15 @@ 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 Fri Dec 10 18:54:10 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 523788 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 BF783C433F5 for ; Fri, 10 Dec 2021 18:54:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S245673AbhLJS6D (ORCPT ); Fri, 10 Dec 2021 13:58:03 -0500 Received: from ams.source.kernel.org ([145.40.68.75]:54134 "EHLO ams.source.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S245672AbhLJS6C (ORCPT ); Fri, 10 Dec 2021 13:58:02 -0500 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 AE825B829A5 for ; Fri, 10 Dec 2021 18:54:26 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8938CC341D9; Fri, 10 Dec 2021 18:54:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1639162465; bh=Fc/bw/unbr6pnYpOf0Jjsuop4bTiapC8pJ+EK6pHeBw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=CLrz6r9nnoGmXoe762JzfsWRLttaOjz8jhUOX6/2ux6uJSslbWvRZWHXfhHgqJE8U vbUIvMh0n0AWzj5h+lApetcoLu9ZEoOlnnxP7jOXfbgxB+WppnOYOXWDiflvm/235h NWUO7RuqIdHtfK0jFPndDQhZNcQ/f6/COL+MF2ThKuP0LeksbDGfU8Z7tHH0RVqMdD vaio32ASwWfCJBOySTAQNUhcZQ4rzguUihEj91lZ4tnx6cFSpBKYRWWKB5l2G3TQsA HROo0xcG9W89+m0DObWkibJ7r0vI+SNpRRI59Lr4p98OJLEQldz8hkTzx+q13K6Rls 59QHqmVo7R24g== 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, Shuah Khan , Mark Brown Subject: [PATCH v4 3/3] kselftest: alsa: Use private alsa-lib configuration in mixer test Date: Fri, 10 Dec 2021 18:54:10 +0000 Message-Id: <20211210185410.740009-4-broonie@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20211210185410.740009-1-broonie@kernel.org> References: <20211210185410.740009-1-broonie@kernel.org> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2934; i=broonie@kernel.org; h=from:subject; bh=f0TLcCAP2UDRiRjGIjxFa6TawJKyod1pyghrkAWhsyI=; b=owEBbQGS/pANAwAKASTWi3JdVIfQAcsmYgBhs6JQRGy7DfGWwaa5gkm3hK5ZpTPZcayNQSK9hRu8 3R99H7mJATMEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCYbOiUAAKCRAk1otyXVSH0AK9B/ 4ox4tAKU+y2cWKJQacX1fqP+lKoo+yZNo84EoHIvJMNsQjsRYbJO6weIqo9PytnHOOuohL1Ahx3zv4 vjuagkWYSH51P/cRQ0PLHcJhowJa3jmzvQJNKzFy20A3028qMy/L8XhXp2vLjHR9Gr+wCPnNGeAcns X3/zHqGjbK7jWubucjKC9pV0D1okiJFOvvg+ro1MIn54JkAjcVK3lkdkO9GUjwf1FYsvAngnqHn3Ni xB5G5RlqSTG9XoBlAPwigrGKzTgKUCVesBJevU0tn6AmW9t0mrp3tXmP7G9cX8/u2RQxBJuIRrdU6o FEwx5h9rG5ZTW5/kla+hVM7e65EMjh 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] Reviewed-by: Shuah Khan Signed-off-by: Mark Brown --- 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 f65a9046e708..b798a76f6825 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); } /*