From patchwork Fri May 16 11:43:29 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Dadap X-Patchwork-Id: 890613 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 CDBA5C3ABD8 for ; Fri, 16 May 2025 11:44:18 +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 F356A601CB; Fri, 16 May 2025 13:44:06 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz F356A601CB DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1747395857; bh=FPuRz4jJ6+vmfAUwiEYcV4YowU6YM/zHhkTzsCgA+NU=; 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=duaJW74gPG6zPLqqLo0AMpG1OR4UokLuURbBVD4s1+xjj+66rK6Ojws7eaLnuvdDy MQ2zSHEwu3FgZ6v8sdrs7Yxw+Wv71vY2M37Oq3a+KpVE1bR1dWlTo9m5JYy4Djt84Z T2UBnhvPApq532uZyElc/XZ4TEPZHg/8JkVzuGic= Received: by alsa1.perex.cz (Postfix, from userid 50401) id 7AB74F802BE; Fri, 16 May 2025 13:43:42 +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 6C6BEF802BE; Fri, 16 May 2025 13:43:42 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 4C1AAF80134; Fri, 16 May 2025 13:43:39 +0200 (CEST) Received: from NAM10-BN7-obe.outbound.protection.outlook.com (mail-bn7nam10on20620.outbound.protection.outlook.com [IPv6:2a01:111:f403:2009::620]) (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 1CB62F80075 for ; Fri, 16 May 2025 13:43:36 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 1CB62F80075 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=HtPySUPT ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=AqMm6JXYtn0fuyqhiVucryyEwzIkR7uluIafaRG4lYqzfAiM872CVw6ovmmQac6FTEQJFaAfgrggLj9yn/VC5+X13w6xgb6IiTO7EEiRWzdILDYsbXbCCcdcES5qMKwNnBY7Ur9A/rFGVP7PPgiyPyzQzOius1SEKkkJh3B2e2XKiU+6LeIuBVg8N5HAa7+PH6aVUUhSLBAnS9LCoImSudvf+cv9Y6fxpbxS/yngLOoOEvId7eI9yLq83klm0Uq+MhVAaqWvem23XZnAnkKNQZFSmLGzaK1FPYs/fNRPXNk7YgF8+mdwG2LyWHkm73fHGahR4mVsoqenrPM7ZMO1mw== 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=ud+F31C/vJwiFzuo1kebSn/JWSNsbkEdpEE+uvDoXzQ=; b=vo9vwjAS85kKuhJF+Xw4BXyxhEK2/5h6Gx1qZ+F0tKnoIYwfGTqWmq7lscAPX7TDYevRG94NxLCGVxvEp+aDO6sV5OTLGL4GUUJFZ0NywE/DQN2RAF1qidojh2kbGT1QTLsoxeyT/M1dtuKY4O6fiwRikCZzNY6B3FNeMS8rP1kEwWYdfj/ObIJ+xHbSc9Pi7TDfwURTqB8NMH/Bn8yrSgDf2CAqFUQlRSIYSlASb1n5MEplte+AXikci7gwIONs4ke9yIDyxD4MH78HBe1Q0mAAEo2wtuIErbMzx8QwsB0TCKCDobUQ12WxtYQy8MS43sdF31V+cwKnLo+Q33Oo6g== 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=ud+F31C/vJwiFzuo1kebSn/JWSNsbkEdpEE+uvDoXzQ=; b=HtPySUPTrDzU0QY0ZfsY4X+BxDm6dB3l/9RETetvBx8kwOIt8tvHj/5M+f1LBJUz/2bZ1grRb/7UoF/xHMtfuBEvox2PaIy9g9LU/H1HUU8OBLlApRYTY1f+F73XRVc62SHfBnSw8i1MFS26zWmG5p4bm1yY76XjzJLQNrhnDtskGFYCSaICxo0BlxyHiCL5moYsk8KQWtcFlrGtV3oBYWEA0f6ATy5WtD8D84cBNmeqnw/l05opnQA9dOZI6PrccEzQ9rUnInNuYtninr6YEW77fscrYq4JCZNKCuo50bsvzrxOtebC4kktZg6hg2a1qHuTZ1VNzyn1VpWpU4+O1w== 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 DM4PR12MB8500.namprd12.prod.outlook.com (2603:10b6:8:190::14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8722.33; Fri, 16 May 2025 11:43:31 +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 15.20.8722.027; Fri, 16 May 2025 11:43:31 +0000 Date: Fri, 16 May 2025 06:43:29 -0500 From: Daniel Dadap To: Takashi Iwai Cc: alsa-devel@alsa-project.org, linux-sound@vger.kernel.org Subject: [PATCH v4] 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: SN7PR04CA0119.namprd04.prod.outlook.com (2603:10b6:806:122::34) To IA0PR12MB8422.namprd12.prod.outlook.com (2603:10b6:208:3de::8) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: IA0PR12MB8422:EE_|DM4PR12MB8500:EE_ X-MS-Office365-Filtering-Correlation-Id: 3c799bde-617c-406b-0c59-08dd946ee1c7 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|366016|376014; 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)(1800799024)(366016)(376014); 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: 3c799bde-617c-406b-0c59-08dd946ee1c7 X-MS-Exchange-CrossTenant-AuthSource: IA0PR12MB8422.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 May 2025 11:43:31.3022 (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: 67prjcz/QAObJFiMJQIOMNv6oFGEoNBz2OkjasW7SvoOPU6WFDgT3LsJknPYcyyMm+hoDUXZpgQsh1uuNX76PQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB8500 Message-ID-Hash: FPNF2HBI6QA4ONDQ24W2HLRGZ6PLDDS6 X-Message-ID-Hash: FPNF2HBI6QA4ONDQ24W2HLRGZ6PLDDS6 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 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", sizeof(card->driver)); + + 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, sizeof(card->shortname)); + + 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");