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Subject: [PATCH V2 01/13] ASoC/soundwire: implement generic api for scanning amd soundwire controller Date: Wed, 10 Jan 2024 15:14:04 +0530 Message-ID: <20240110094416.853610-2-Vijendar.Mukunda@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240110094416.853610-1-Vijendar.Mukunda@amd.com> References: <20240110094416.853610-1-Vijendar.Mukunda@amd.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY4PEPF0000EE37:EE_|DM4PR12MB7670:EE_ X-MS-Office365-Filtering-Correlation-Id: f92c4040-4516-4fc8-7fae-08dc11c0d951 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17; CTRY:US; LANG:en; SCL:1; SRV:; IPV:CAL; SFV:NSPM; H:SATLEXMB04.amd.com; PTR:InfoDomainNonexistent; CAT:NONE; SFS:(13230031)(4636009)(396003)(376002)(39860400002)(136003)(346002)(230922051799003)(186009)(82310400011)(64100799003)(1800799012)(451199024)(36840700001)(46966006)(40470700004)(478600001)(4326008)(8676002)(8936002)(36860700001)(70206006)(426003)(110136005)(54906003)(316002)(336012)(70586007)(26005)(1076003)(83380400001)(7696005)(6666004)(2616005)(47076005)(5660300002)(2906002)(7416002)(41300700001)(36756003)(82740400003)(81166007)(356005)(86362001)(40480700001)(40460700003)(41533002)(36900700001); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 10 Jan 2024 09:45:15.6064 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: f92c4040-4516-4fc8-7fae-08dc11c0d951 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d; Ip=[165.204.84.17]; Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CY4PEPF0000EE37.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB7670 Message-ID-Hash: DNWBXY7BUHDPAEARQFQADISEAOZ7AOGF X-Message-ID-Hash: DNWBXY7BUHDPAEARQFQADISEAOZ7AOGF X-MailFrom: Vijendar.Mukunda@amd.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: Implement generic function for scanning SoundWire controller. Same function will be used for legacy and sof stack for AMD platforms. Signed-off-by: Vijendar Mukunda --- include/linux/soundwire/sdw_amd.h | 15 ++++++++ sound/soc/amd/acp/Kconfig | 7 ++++ sound/soc/amd/acp/Makefile | 2 + sound/soc/amd/acp/amd-sdw-acpi.c | 62 +++++++++++++++++++++++++++++++ 4 files changed, 86 insertions(+) create mode 100644 sound/soc/amd/acp/amd-sdw-acpi.c diff --git a/include/linux/soundwire/sdw_amd.h b/include/linux/soundwire/sdw_amd.h index ceecad74aef9..41dd64941cef 100644 --- a/include/linux/soundwire/sdw_amd.h +++ b/include/linux/soundwire/sdw_amd.h @@ -6,6 +6,7 @@ #ifndef __SDW_AMD_H #define __SDW_AMD_H +#include #include /* AMD pm_runtime quirk definitions */ @@ -106,4 +107,18 @@ struct amd_sdw_manager { struct sdw_amd_dai_runtime **dai_runtime_array; }; + +/** + * struct sdw_amd_acpi_info - Soundwire AMD information found in ACPI tables + * @handle: ACPI controller handle + * @count: maximum no of soundwire manager links supported on AMD platform. + * @link_mask: bit-wise mask listing links enabled by BIOS menu + */ +struct sdw_amd_acpi_info { + acpi_handle handle; + int count; + u32 link_mask; +}; + +int amd_sdw_scan_controller(struct sdw_amd_acpi_info *info); #endif diff --git a/sound/soc/amd/acp/Kconfig b/sound/soc/amd/acp/Kconfig index 84c963241dc5..b3105ba9c3a3 100644 --- a/sound/soc/amd/acp/Kconfig +++ b/sound/soc/amd/acp/Kconfig @@ -101,6 +101,13 @@ config SND_SOC_AMD_MACH_COMMON help This option enables common Machine driver module for ACP. +config SND_AMD_SOUNDWIRE_ACPI + tristate "AMD SoundWire ACPI Support" + depends on ACPI + help + This options enables ACPI helper functions for SoundWire + interface for AMD platforms. + config SND_SOC_AMD_LEGACY_MACH tristate "AMD Legacy Machine Driver Support" depends on X86 && PCI && I2C diff --git a/sound/soc/amd/acp/Makefile b/sound/soc/amd/acp/Makefile index ff5f7893b81e..1fd581a2aa33 100644 --- a/sound/soc/amd/acp/Makefile +++ b/sound/soc/amd/acp/Makefile @@ -10,6 +10,7 @@ snd-acp-i2s-objs := acp-i2s.o snd-acp-pdm-objs := acp-pdm.o snd-acp-legacy-common-objs := acp-legacy-common.o snd-acp-pci-objs := acp-pci.o +snd-amd-sdw-acpi-objs := amd-sdw-acpi.o #platform specific driver snd-acp-renoir-objs := acp-renoir.o @@ -33,6 +34,7 @@ obj-$(CONFIG_SND_AMD_ASOC_REMBRANDT) += snd-acp-rembrandt.o obj-$(CONFIG_SND_AMD_ASOC_ACP63) += snd-acp63.o obj-$(CONFIG_SND_AMD_ASOC_ACP70) += snd-acp70.o +obj-$(CONFIG_SND_AMD_SOUNDWIRE_ACPI) += snd-amd-sdw-acpi.o obj-$(CONFIG_SND_SOC_AMD_MACH_COMMON) += snd-acp-mach.o obj-$(CONFIG_SND_SOC_AMD_LEGACY_MACH) += snd-acp-legacy-mach.o obj-$(CONFIG_SND_SOC_AMD_SOF_MACH) += snd-acp-sof-mach.o diff --git a/sound/soc/amd/acp/amd-sdw-acpi.c b/sound/soc/amd/acp/amd-sdw-acpi.c new file mode 100644 index 000000000000..babd841d3296 --- /dev/null +++ b/sound/soc/amd/acp/amd-sdw-acpi.c @@ -0,0 +1,62 @@ +// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) +// +// This file is provided under a dual BSD/GPLv2 license. When using or +// redistributing this file, you may do so under either license. +// +// Copyright(c) 2023 Advanced Micro Devices, Inc. All rights reserved. +// +// Authors: Vijendar Mukunda + +/* + * SDW AMD ACPI scan helper function + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +int amd_sdw_scan_controller(struct sdw_amd_acpi_info *info) +{ + struct acpi_device *adev = acpi_fetch_acpi_dev(info->handle); + u32 sdw_bitmap = 0; + u8 count = 0; + int ret; + + if (!adev) + return -EINVAL; + + /* Found controller, find links supported */ + ret = fwnode_property_read_u32_array(acpi_fwnode_handle(adev), + "mipi-sdw-manager-list", &sdw_bitmap, 1); + if (ret) { + dev_err(&adev->dev, + "Failed to read mipi-sdw-manager-list: %d\n", ret); + return -EINVAL; + } + count = hweight32(sdw_bitmap); + /* Check count is within bounds */ + if (count > info->count) { + dev_err(&adev->dev, "Manager count %d exceeds max %d\n", + count, info->count); + return -EINVAL; + } + + if (!count) { + dev_dbg(&adev->dev, "No SoundWire Managers detected\n"); + return -EINVAL; + } + dev_dbg(&adev->dev, "ACPI reports %d SoundWire Manager devices\n", count); + info->link_mask = sdw_bitmap; + return 0; +} +EXPORT_SYMBOL_NS(amd_sdw_scan_controller, SND_AMD_SOUNDWIRE_ACPI); + +MODULE_LICENSE("Dual BSD/GPL"); +MODULE_DESCRIPTION("AMD SoundWire ACPI helpers");