From patchwork Wed May 21 14:35:29 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Dadap X-Patchwork-Id: 891726 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 alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E82C1C2D0CD for ; Wed, 21 May 2025 14:36:28 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [45.14.194.44]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 3F92D601D8; Wed, 21 May 2025 16:36:15 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 3F92D601D8 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1747838185; bh=pM3gMP8FqngddJMEVF/k2/QByPrBLQRHcaT3W/wx92k=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-Id: List-Archive:List-Help:List-Owner:List-Post:List-Subscribe: List-Unsubscribe:From; b=p8kcwMvC2ergPDcPsx1p33pwX9lZG62TAsNPge7RwM/iTx05FbFSqQEbR/8ZJ4N+a n9jNwAedC20SYc1L9Bgnv51LpfXn36PgegGMnlv7Lau6GT4AK4Lje6VpJZedpTk8E+ zPmCG5/JOT8Uwf1xn0BCqXGEGKZobYjGr4hWSdI4= Received: by alsa1.perex.cz (Postfix, from userid 50401) id 81283F80571; Wed, 21 May 2025 16:35:48 +0200 (CEST) Received: from mailman-core.alsa-project.org (mailman-core.alsa-project.org [10.254.200.10]) by alsa1.perex.cz (Postfix) with ESMTP id 77164F80588; Wed, 21 May 2025 16:35:48 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 4D3E8F80553; Wed, 21 May 2025 16:35:44 +0200 (CEST) Received: from NAM11-DM6-obe.outbound.protection.outlook.com (mail-dm6nam11on2060c.outbound.protection.outlook.com [IPv6:2a01:111:f403:2415::60c]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-384) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id DF80FF80269 for ; Wed, 21 May 2025 16:35:41 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz DF80FF80269 Authentication-Results: alsa1.perex.cz; dkim=pass (2048-bit key, unprotected) header.d=Nvidia.com header.i=@Nvidia.com header.a=rsa-sha256 header.s=selector2 header.b=TNEcXzR6 ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=SRM7OCcv+Yk7Zj2FD7eMLzhI7iO+Fbe3QzhWkYEPA550yDko+IAAtB+pcs6pVs0wRQTng6aaTj/D2nPEufrrVgaOghEORBKQMV2Wkh0EMaVYfmzyLnI52Bzb6BznFfN69to0lA/zsADPUfkkA1ceXcqNS9sE/8vl1GFjoSJ9IGTOdLFcF/prmeMGw+9qft4MVXKWWFXKTXl7D/90QE/KWtjQwCdxSa4UVCjYwmTJfQ+LQpMjUFiZYzRo9Qr52vhiQD0BLPZ546Ff8FxowZSOrKczDou0Tcc+jkIED+GWmnPbqs+0GKLtERqyC01G4dVSWAhhT4wJlFGgi20egYuz+g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=YRFyFKJMuNJ4yNkXZxjdeNlTFWUD36AJVuNGVseJUi8=; b=pTusDqR4IDjEeYKKdRhwXaQVtGxskAW2hFMym00HPrn47J4lZI0JAOT/iYFHJBd7UcjXznFsIg/rz6eIIYc9WAeOxUeS2URLI26s9bUn2nzfjLNWjX+rdWYfaI3eT/YnZsxKFoWCiyjo/oc4+vvgPxgGLT1efWG4BhkgYqSWLjCbWaeIdBAHzQ2HE2tvArAgcv02X5SGB3AXW/VmEegjODhH7DC8Li6QjFYJy1pxzXjeLUCdrQepZnPXWNsbXgcMydfkgo392AfhARqki0vDe6T9z37FusgA6HisYr2MQNaCFTyHLi0lpHLtxognAl4H1HEpNJZQX4HGpe4k/FPQiQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nvidia.com; dmarc=pass action=none header.from=nvidia.com; dkim=pass header.d=nvidia.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=YRFyFKJMuNJ4yNkXZxjdeNlTFWUD36AJVuNGVseJUi8=; b=TNEcXzR69ml2lZ4K5S2EzbHPF9xn7Cxr11KG5Vftm3yZgApIOWKIC2dKuJPkxc2LwOhm9h2qrAI02pTkTKehsZKiYbwHgjU5z9SIC0MFfJ7YFlt1LiCkv/TqFZ+1U6W6kl4jofu4SY9RwzfyIIVK0nwB5qXAhIkGwzdZ0PXNUls0jBkdleZijuerxpilh4nHRuWg2cxH7Cc35UKQG8DvS7yAAxf7cu3z5P4x68NWQ8IYdYlkSP/oghOoYlc88DQSOmKMDDca6Wnx9pDSJYL8kRF5Y+BZszeIW6AflvSj5qBLwd1rLkS6XFBcM3ggCtePh9f+kFtNBjHhO46zl8u+sQ== Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nvidia.com; Received: from IA0PR12MB8422.namprd12.prod.outlook.com (2603:10b6:208:3de::8) by SJ2PR12MB8806.namprd12.prod.outlook.com (2603:10b6:a03:4d0::8) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8746.30; Wed, 21 May 2025 14:35:33 +0000 Received: from IA0PR12MB8422.namprd12.prod.outlook.com ([fe80::50d8:c62d:5338:5650]) by IA0PR12MB8422.namprd12.prod.outlook.com ([fe80::50d8:c62d:5338:5650%4]) with mapi id 15.20.8746.030; Wed, 21 May 2025 14:35:32 +0000 Date: Wed, 21 May 2025 09:35:29 -0500 From: Daniel Dadap To: Takashi Iwai Cc: alsa-devel@alsa-project.org, linux-sound@vger.kernel.org Subject: [PATCH v5] ALSA: hda - Add new driver for HDA controllers listed via ACPI Message-ID: References: <87r00qx78f.wl-tiwai@suse.de> <87zffdvvj6.wl-tiwai@suse.de> Content-Disposition: inline In-Reply-To: <87zffdvvj6.wl-tiwai@suse.de> X-ClientProxiedBy: DM6PR07CA0109.namprd07.prod.outlook.com (2603:10b6:5:330::17) To IA0PR12MB8422.namprd12.prod.outlook.com (2603:10b6:208:3de::8) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: IA0PR12MB8422:EE_|SJ2PR12MB8806:EE_ X-MS-Office365-Filtering-Correlation-Id: b5327ce3-3608-48b7-2b8f-08dd9874bdd2 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|1800799024|366016; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:IA0PR12MB8422.namprd12.prod.outlook.com; PTR:; CAT:NONE; SFS:(13230040)(376014)(1800799024)(366016); DIR:OUT; SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: b5327ce3-3608-48b7-2b8f-08dd9874bdd2 X-MS-Exchange-CrossTenant-AuthSource: IA0PR12MB8422.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 21 May 2025 14:35:32.6778 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: RVM8gyjykX5DqWlGfpBj5y4CA4b7Vnst3zvVQJdRDS09QIYVLFLRMp7GMPFi7Phl23ha4Vki3W1l28HLp6lj9w== X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ2PR12MB8806 Message-ID-Hash: UPVBKU5SFTXWIECEYE43NTQY7KJJC2VG X-Message-ID-Hash: UPVBKU5SFTXWIECEYE43NTQY7KJJC2VG X-MailFrom: ddadap@nvidia.com X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.9 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: Some systems expose HD-Audio controllers via objects in the ACPI tables which encapsulate the controller's interrupt and the base address for the HDA registers in an ACPI _CRS object, for example, as listed in this ACPI table dump excerpt: Device (HDA0) { Name (_HID, "NVDA2014") // _HID: Hardware ID ... Name (_CRS, ResourceTemplate () // _CRS: Current Resource Settings { Memory32Fixed (ReadWrite, 0x36078000, // Address Base 0x00008000, // Address Length ) Interrupt (ResourceConsumer, Level, ActiveHigh, Exclusive, ,, ) { 0x0000021E, } }) } Add support for HDA controllers discovered through ACPI, including support for some platforms which expose such HDA controllers on NVIDIA SoCs. This is done with a new driver which uses existing infrastructure for extracting resource information from _CRS objects and plumbs the parsed resource information through to the existing HDA infrastructure to enable HD-Audio functionality on such devices. Although this driver is in the sound/pci/hda/ directory, it targets devices which are not actually enumerated on the PCI bus. This is because it depends upon the Intel "Azalia" infrastructure which has traditionally been usedvfor PCI-based devices. Signed-off-by: Daniel Dadap --- Patch history: v2,3: Remove __maybe_unused, use SYSTEM_SLEEP_PM_OPS (Takashi Iwai) v4: Address checkpatch issues (Takashi Iwai), allow NULL match data v5: Use two-argument strscpy() sound/pci/hda/Kconfig | 11 ++ sound/pci/hda/Makefile | 2 + sound/pci/hda/hda_acpi.c | 325 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 338 insertions(+) create mode 100644 sound/pci/hda/hda_acpi.c diff --git a/sound/pci/hda/Kconfig b/sound/pci/hda/Kconfig index 9c427270ff4f..436dfd182a09 100644 --- a/sound/pci/hda/Kconfig +++ b/sound/pci/hda/Kconfig @@ -42,6 +42,17 @@ config SND_HDA_TEGRA To compile this driver as a module, choose M here: the module will be called snd-hda-tegra. +config SND_HDA_ACPI + tristate "HD Audio ACPI" + depends on ACPI + select SND_HDA + help + Say Y here to include support for Azalia-compatible HDA controllers + which are advertised via ACPI objects. + + To compile this driver as a module, choose M here: the module + will be called snd-hda-acpi. + if SND_HDA config SND_HDA_HWDEP diff --git a/sound/pci/hda/Makefile b/sound/pci/hda/Makefile index 210c406dfbc5..7a7c16d705dd 100644 --- a/sound/pci/hda/Makefile +++ b/sound/pci/hda/Makefile @@ -1,6 +1,7 @@ # SPDX-License-Identifier: GPL-2.0 snd-hda-intel-y := hda_intel.o snd-hda-tegra-y := hda_tegra.o +snd-hda-acpi-y := hda_acpi.o snd-hda-codec-y := hda_bind.o hda_codec.o hda_jack.o hda_auto_parser.o hda_sysfs.o snd-hda-codec-y += hda_controller.o @@ -80,3 +81,4 @@ obj-$(CONFIG_SND_HDA_SCODEC_TAS2781_SPI) += snd-hda-scodec-tas2781-spi.o # when built in kernel obj-$(CONFIG_SND_HDA_INTEL) += snd-hda-intel.o obj-$(CONFIG_SND_HDA_TEGRA) += snd-hda-tegra.o +obj-$(CONFIG_SND_HDA_ACPI) += snd-hda-acpi.o diff --git a/sound/pci/hda/hda_acpi.c b/sound/pci/hda/hda_acpi.c new file mode 100644 index 000000000000..3303cecddd94 --- /dev/null +++ b/sound/pci/hda/hda_acpi.c @@ -0,0 +1,325 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * ALSA driver for ACPI-based HDA Controllers. + */ + +#include +#include +#include + +#include + +#include "hda_controller.h" + +struct hda_acpi { + struct azx azx; + struct snd_card *card; + struct platform_device *pdev; + void __iomem *regs; + struct work_struct probe_work; + const struct hda_data *data; +}; + +/** + * struct hda_data - Optional device-specific data + * @short_name: Used for the ALSA card name; defaults to KBUILD_MODNAME + * @long_name: Used for longer description; defaults to short_name + * @flags: Passed to &azx->driver_caps + * + * A pointer to a record of this type may be stored in the + * &acpi_device_id->driver_data field of an ACPI match table entry in order to + * customize the naming and behavior of a particular device. All fields are + * optional and sensible defaults will be selected in their absence. + */ +struct hda_data { + const char *short_name; + const char *long_name; + unsigned long flags; +}; + +static int hda_acpi_dev_disconnect(struct snd_device *device) +{ + struct azx *chip = device->device_data; + + chip->bus.shutdown = 1; + return 0; +} + +static int hda_acpi_dev_free(struct snd_device *device) +{ + struct azx *azx = device->device_data; + struct hda_acpi *hda = container_of(azx, struct hda_acpi, azx); + + cancel_work_sync(&hda->probe_work); + if (azx_bus(azx)->chip_init) { + azx_stop_all_streams(azx); + azx_stop_chip(azx); + } + + azx_free_stream_pages(azx); + azx_free_streams(azx); + snd_hdac_bus_exit(azx_bus(azx)); + + return 0; +} + +static int hda_acpi_init(struct hda_acpi *hda) +{ + struct hdac_bus *bus = azx_bus(&hda->azx); + struct snd_card *card = hda->azx.card; + struct device *dev = &hda->pdev->dev; + struct azx *azx = &hda->azx; + struct resource *res; + unsigned short gcap; + const char *sname, *lname; + int err, irq; + + /* The base address for the HDA registers and the interrupt are wrapped + * in an ACPI _CRS object which can be parsed by platform_get_irq() and + * devm_platform_get_and_ioremap_resource() + */ + + irq = platform_get_irq(hda->pdev, 0); + if (irq < 0) + return irq; + + hda->regs = devm_platform_get_and_ioremap_resource(hda->pdev, 0, &res); + if (IS_ERR(hda->regs)) + return PTR_ERR(hda->regs); + + bus->remap_addr = hda->regs; + bus->addr = res->start; + + err = devm_request_irq(dev, irq, azx_interrupt, + IRQF_SHARED, KBUILD_MODNAME, azx); + if (err) { + dev_err(dev, "unable to request IRQ %d, disabling device\n", + irq); + return err; + } + bus->irq = irq; + bus->dma_stop_delay = 100; + card->sync_irq = bus->irq; + + gcap = azx_readw(azx, GCAP); + dev_dbg(dev, "chipset global capabilities = 0x%x\n", gcap); + + azx->align_buffer_size = 1; + + azx->capture_streams = (gcap >> 8) & 0x0f; + azx->playback_streams = (gcap >> 12) & 0x0f; + + azx->capture_index_offset = 0; + azx->playback_index_offset = azx->capture_streams; + azx->num_streams = azx->playback_streams + azx->capture_streams; + + err = azx_init_streams(azx); + if (err < 0) { + dev_err(dev, "failed to initialize streams: %d\n", err); + return err; + } + + err = azx_alloc_stream_pages(azx); + if (err < 0) { + dev_err(dev, "failed to allocate stream pages: %d\n", err); + return err; + } + + azx_init_chip(azx, 1); + + if (!bus->codec_mask) { + dev_err(dev, "no codecs found!\n"); + return -ENODEV; + } + + strscpy(card->driver, "hda-acpi"); + + sname = hda->data->short_name ? hda->data->short_name : KBUILD_MODNAME; + + if (strlen(sname) > sizeof(card->shortname)) + dev_info(dev, "truncating shortname for card %s\n", sname); + strscpy(card->shortname, sname); + + lname = hda->data->long_name ? hda->data->long_name : sname; + + snprintf(card->longname, sizeof(card->longname), + "%s at 0x%lx irq %i", lname, bus->addr, bus->irq); + + return 0; +} + +static void hda_acpi_probe_work(struct work_struct *work) +{ + struct hda_acpi *hda = container_of(work, struct hda_acpi, probe_work); + struct azx *chip = &hda->azx; + int err; + + err = hda_acpi_init(hda); + if (err < 0) + return; + + err = azx_probe_codecs(chip, 8); + if (err < 0) + return; + + err = azx_codec_configure(chip); + if (err < 0) + return; + + err = snd_card_register(chip->card); + if (err < 0) + return; + + chip->running = 1; +} + +static int hda_acpi_create(struct hda_acpi *hda) +{ + static const struct snd_device_ops ops = { + .dev_disconnect = hda_acpi_dev_disconnect, + .dev_free = hda_acpi_dev_free, + }; + static const struct hda_controller_ops null_ops; + struct azx *azx = &hda->azx; + int err; + + mutex_init(&azx->open_mutex); + azx->card = hda->card; + INIT_LIST_HEAD(&azx->pcm_list); + + azx->ops = &null_ops; + azx->driver_caps = hda->data->flags; + azx->driver_type = hda->data->flags & 0xff; + azx->codec_probe_mask = -1; + + err = azx_bus_init(azx, NULL); + if (err < 0) + return err; + + err = snd_device_new(hda->card, SNDRV_DEV_LOWLEVEL, &hda->azx, &ops); + if (err < 0) { + dev_err(&hda->pdev->dev, "Error creating device\n"); + return err; + } + + return 0; +} + +static int hda_acpi_probe(struct platform_device *pdev) +{ + struct hda_acpi *hda; + int err; + + hda = devm_kzalloc(&pdev->dev, sizeof(*hda), GFP_KERNEL); + if (!hda) + return -ENOMEM; + + hda->pdev = pdev; + hda->data = acpi_device_get_match_data(&pdev->dev); + + /* Fall back to defaults if the table didn't have a *struct hda_data */ + if (!hda->data) + hda->data = devm_kzalloc(&pdev->dev, sizeof(*hda->data), + GFP_KERNEL); + if (!hda->data) + return -ENOMEM; + + err = snd_card_new(&pdev->dev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1, + THIS_MODULE, 0, &hda->card); + if (err < 0) { + dev_err(&pdev->dev, "Error creating card!\n"); + return err; + } + + INIT_WORK(&hda->probe_work, hda_acpi_probe_work); + + err = hda_acpi_create(hda); + if (err < 0) + goto out_free; + hda->card->private_data = &hda->azx; + + dev_set_drvdata(&pdev->dev, hda->card); + + schedule_work(&hda->probe_work); + + return 0; + +out_free: + snd_card_free(hda->card); + return err; +} + +static void hda_acpi_remove(struct platform_device *pdev) +{ + snd_card_free(dev_get_drvdata(&pdev->dev)); +} + +static void hda_acpi_shutdown(struct platform_device *pdev) +{ + struct snd_card *card = dev_get_drvdata(&pdev->dev); + struct azx *chip; + + if (!card) + return; + chip = card->private_data; + if (chip && chip->running) + azx_stop_chip(chip); +} + +static int hda_acpi_suspend(struct device *dev) +{ + struct snd_card *card = dev_get_drvdata(dev); + int rc; + + rc = pm_runtime_force_suspend(dev); + if (rc < 0) + return rc; + snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); + + return 0; +} + +static int hda_acpi_resume(struct device *dev) +{ + struct snd_card *card = dev_get_drvdata(dev); + int rc; + + rc = pm_runtime_force_resume(dev); + if (rc < 0) + return rc; + snd_power_change_state(card, SNDRV_CTL_POWER_D0); + + return 0; +} + +static const struct dev_pm_ops hda_acpi_pm = { + SET_SYSTEM_SLEEP_PM_OPS(hda_acpi_suspend, hda_acpi_resume) +}; + +struct hda_data nvidia_hda_data = { + .short_name = "NVIDIA", + .long_name = "NVIDIA HDA Controller", + .flags = AZX_DCAPS_CORBRP_SELF_CLEAR, +}; + +static const struct acpi_device_id hda_acpi_match[] = { + { .id = "NVDA2014", .driver_data = (uintptr_t) &nvidia_hda_data }, + { .id = "NVDA2015", .driver_data = (uintptr_t) &nvidia_hda_data }, + {}, +}; +MODULE_DEVICE_TABLE(acpi, hda_acpi_match); + +static struct platform_driver hda_acpi_platform_driver = { + .driver = { + .name = KBUILD_MODNAME, + .pm = &hda_acpi_pm, + .acpi_match_table = hda_acpi_match, + }, + .probe = hda_acpi_probe, + .remove = hda_acpi_remove, + .shutdown = hda_acpi_shutdown, +}; +module_platform_driver(hda_acpi_platform_driver); + +MODULE_DESCRIPTION("Driver for ACPI-based HDA Controllers"); +MODULE_LICENSE("GPL");