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Mon, 16 Oct 2023 22:23:50 -0700 From: Kartik To: , , , , , , , , , , , , , , , , , , , Subject: [PATCH v7 4/8] soc/tegra: fuse: Add tegra_acpi_init_apbmisc() Date: Tue, 17 Oct 2023 10:53:18 +0530 Message-ID: <20231017052322.2636-5-kkartik@nvidia.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231017052322.2636-1-kkartik@nvidia.com> References: <20231017052322.2636-1-kkartik@nvidia.com> MIME-Version: 1.0 X-NVConfidentiality: public Content-Transfer-Encoding: 8bit Content-Type: text/plain X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL02EPF0001A0FD:EE_|SA3PR12MB7860:EE_ X-MS-Office365-Filtering-Correlation-Id: 9f92d06b-939a-46aa-b034-08dbced14be4 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:216.228.117.161;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge2.nvidia.com;CAT:NONE;SFS:(13230031)(4636009)(39860400002)(136003)(346002)(396003)(376002)(230922051799003)(186009)(82310400011)(1800799009)(451199024)(64100799003)(40470700004)(36840700001)(46966006)(110136005)(478600001)(70586007)(6666004)(70206006)(26005)(316002)(336012)(426003)(1076003)(2616005)(356005)(8676002)(8936002)(7416002)(2906002)(41300700001)(36756003)(5660300002)(86362001)(47076005)(7636003)(921005)(36860700001)(83380400001)(82740400003)(40480700001)(40460700003)(2101003)(83996005);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 17 Oct 2023 05:24:11.7634 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 9f92d06b-939a-46aa-b034-08dbced14be4 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.161];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BL02EPF0001A0FD.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA3PR12MB7860 X-Rspamd-Queue-Id: 35D081C000A X-Rspam-User: X-Rspamd-Server: rspam04 X-Stat-Signature: ikjsq3t16xnagjrueimq77z6nrfmbbhg X-HE-Tag: 1697520254-653621 X-HE-Meta: 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 hKp0mN7Y njQSnL6Tk2AnammBF7CsQfRf3TltPZzVHt9ULF9Aown0S3my21JbvDmoDImIYkaExfVMYwoosySUlIvymHkVivVxSmyfGvRul5cEQ/mpLdgP4GMcqDALXTa7hDSZmwdxeQ8aSg6i93Hn6E9mVoeHZu6LeXViML/QaxkGhk86F6CIgT6Bb0k1Zat+j6tCrzwKVr5LqbneVI1muLLvmnaLcwCv8v+MdSP4iMP3Jdl5iNZcvW3uRWr3vc9jDss2WHqomQduI9tupF8L/DHf65z0iml5x3Ec76pW6qB0waM7e3SMF4SuSUakBeE0hyoISe1UISF65/tOjZcarmbbDJ9es4lFWf3FGzPugiY8Po5+CPCrlc6hGH1Uv8rGvVUUzyKkf0w1c+58rUbJahuBmR5dH2M0UrQ+TFGEHgT3A X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: In preparation to ACPI support in Tegra fuse driver add function tegra_acpi_init_apbmisc() to initialize tegra-apbmisc driver. Also, document the reason of calling tegra_init_apbmisc() at early init. Note that function tegra_acpi_init_apbmisc() is not placed in the __init section, because it will be called during probe. Signed-off-by: Kartik --- v3 -> v6: * Use resource_list_for_each_entry() instead of resource_list_for_each_entry_safe(). v2 -> v3: * Fix build warnings seen when CONFIG_ACPI is disabled by moving tegra_init_apbmisc table inside #ifdef CONFIG_ACPI block. v1 -> v2: * Update ACPI ID table 'tegra_init_apbmisc'. * Add comment to document the reason to call tegra_init_apbmisc at early init. * Fix an issue where acpi_dev_free_resource_list() and * acpi_dev_put() were not called if acpi_dev_get_memory_resources() returned 1. * Update logic to fetch memory resources in tegra_acpi_init_apbmisc(). * Fix build errors seen when CONFIG_ACPI is disabled. --- drivers/soc/tegra/fuse/fuse.h | 1 + drivers/soc/tegra/fuse/tegra-apbmisc.c | 72 ++++++++++++++++++++++++++ 2 files changed, 73 insertions(+) diff --git a/drivers/soc/tegra/fuse/fuse.h b/drivers/soc/tegra/fuse/fuse.h index 90f23be73894..a41e9f85281a 100644 --- a/drivers/soc/tegra/fuse/fuse.h +++ b/drivers/soc/tegra/fuse/fuse.h @@ -69,6 +69,7 @@ struct tegra_fuse { void tegra_init_revision(void); void tegra_init_apbmisc(void); +void tegra_acpi_init_apbmisc(void); u32 __init tegra_fuse_read_spare(unsigned int spare); u32 __init tegra_fuse_read_early(unsigned int offset); diff --git a/drivers/soc/tegra/fuse/tegra-apbmisc.c b/drivers/soc/tegra/fuse/tegra-apbmisc.c index 06c1b3a2c7ec..6457f80821bb 100644 --- a/drivers/soc/tegra/fuse/tegra-apbmisc.c +++ b/drivers/soc/tegra/fuse/tegra-apbmisc.c @@ -3,9 +3,11 @@ * Copyright (c) 2014-2023, NVIDIA CORPORATION. All rights reserved. */ +#include #include #include #include +#include #include #include @@ -180,6 +182,12 @@ static void tegra_init_apbmisc_resources(struct resource *apbmisc, } } +/** + * tegra_init_apbmisc - Initializes Tegra APBMISC and Strapping registers. + * + * This is called during early init as some of the old 32-bit ARM code needs + * information from the APBMISC registers very early during boot. + */ void __init tegra_init_apbmisc(void) { struct resource apbmisc, straps; @@ -244,3 +252,67 @@ void __init tegra_init_apbmisc(void) put: of_node_put(np); } + +#ifdef CONFIG_ACPI +static const struct acpi_device_id apbmisc_acpi_match[] = { + { "NVDA2010" }, + { /* sentinel */ } +}; + +void tegra_acpi_init_apbmisc(void) +{ + struct resource *resources[2] = { NULL }; + struct resource_entry *rentry; + struct acpi_device *adev = NULL; + struct list_head resource_list; + int rcount = 0; + int ret; + + adev = acpi_dev_get_first_match_dev(apbmisc_acpi_match[0].id, NULL, -1); + if (!adev) + return; + + INIT_LIST_HEAD(&resource_list); + + ret = acpi_dev_get_memory_resources(adev, &resource_list); + if (ret < 0) { + pr_err("failed to get APBMISC memory resources"); + goto out_put_acpi_dev; + } + + /* + * Get required memory resources. + * + * resources[0]: apbmisc. + * resources[1]: straps. + */ + resource_list_for_each_entry(rentry, &resource_list) { + if (rcount >= ARRAY_SIZE(resources)) + break; + + resources[rcount++] = rentry->res; + } + + if (!resources[0]) { + pr_err("failed to get APBMISC registers\n"); + goto out_free_resource_list; + } + + if (!resources[1]) { + pr_err("failed to get strapping options registers\n"); + goto out_free_resource_list; + } + + tegra_init_apbmisc_resources(resources[0], resources[1]); + +out_free_resource_list: + acpi_dev_free_resource_list(&resource_list); + +out_put_acpi_dev: + acpi_dev_put(adev); +} +#else +void tegra_acpi_init_apbmisc(void) +{ +} +#endif -- 2.34.1