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Sun, 2 Oct 2022 07:44:17 -0700 From: Petlozu Pravareshwar To: , , , , , , , , , CC: , Prathamesh Shete Subject: [PATCH v2] soc/tegra: pmc: Process wake events during resume Date: Sun, 2 Oct 2022 14:44:09 +0000 Message-ID: <20221002144409.102132-1-petlozup@nvidia.com> X-Mailer: git-send-email 2.17.1 X-NVConfidentiality: public MIME-Version: 1.0 Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CO1NAM11FT043:EE_|SA1PR12MB6776:EE_ X-MS-Office365-Filtering-Correlation-Id: 3bfd28e1-7081-4f9a-bfa2-08daa484960a 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:216.228.118.232;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc7edge1.nvidia.com;CAT:NONE;SFS:(13230022)(4636009)(396003)(136003)(346002)(376002)(39860400002)(451199015)(36840700001)(46966006)(40470700004)(2616005)(26005)(107886003)(6666004)(7696005)(316002)(54906003)(4326008)(8676002)(70586007)(70206006)(478600001)(36756003)(110136005)(82310400005)(82740400003)(86362001)(40480700001)(921005)(356005)(40460700003)(7636003)(83380400001)(336012)(1076003)(186003)(47076005)(426003)(36860700001)(5660300002)(8936002)(41300700001)(2906002);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 02 Oct 2022 14:44:18.5334 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 3bfd28e1-7081-4f9a-bfa2-08daa484960a X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.118.232];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: CO1NAM11FT043.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA1PR12MB6776 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org During system resume, translate tier2 SC7 wake sources back into irqs and do generic_handle_irq() to invoke the interrupt handlers for edge triggered wake events such as sw-wake. Signed-off-by: Prathamesh Shete Signed-off-by: Petlozu Pravareshwar --- drivers/soc/tegra/pmc.c | 42 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) diff --git a/drivers/soc/tegra/pmc.c b/drivers/soc/tegra/pmc.c index 66f94c011528..d166048de83c 100644 --- a/drivers/soc/tegra/pmc.c +++ b/drivers/soc/tegra/pmc.c @@ -23,6 +23,7 @@ #include #include #include +#include #include #include #include @@ -3151,6 +3152,46 @@ static void wke_clear_wake_status(void) } } +/* translate sc7 wake sources back into irqs to catch edge triggered wakeups */ +static void process_wake_event(unsigned int index, unsigned long status) +{ + unsigned int irq, wake; + irq_hw_number_t hwirq; + struct irq_desc *desc; + + dev_dbg(pmc->dev, "Wake[%d:%d] status=0x%x\n", (index * 32) + 31, + index * 32, (u32)status); + + for_each_set_bit(wake, &status, 32) { + hwirq = wake + 32 * index; + + irq = irq_find_mapping(pmc->domain, hwirq); + + desc = irq_to_desc(irq); + if (!desc || !desc->action || !desc->action->name) { + dev_dbg(pmc->dev, "Resume caused by WAKE%d, irq %d\n", + (wake + 32 * index), irq); + continue; + } + dev_dbg(pmc->dev, "Resume caused by WAKE%d, %s\n", + (wake + 32 * index), desc->action->name); + generic_handle_irq(irq); + } +} + +static void tegra186_pmc_wake_syscore_resume(void) +{ + unsigned int i; + u32 status; + + for (i = 0; i < pmc->soc->max_wake_vectors; i++) { + status = readl(pmc->wake + WAKE_AOWAKE_STATUS_R(i)); + status = status & readl(pmc->wake + + WAKE_AOWAKE_TIER2_ROUTING(i)); + process_wake_event(i, status); + } +} + static int tegra186_pmc_wake_syscore_suspend(void) { wke_read_sw_wake_status(); @@ -3828,6 +3869,7 @@ static const struct tegra_pmc_regs tegra186_pmc_regs = { static struct syscore_ops tegra186_pmc_wake_syscore_ops = { .suspend = tegra186_pmc_wake_syscore_suspend, + .resume = tegra186_pmc_wake_syscore_resume, }; static void tegra186_pmc_init(struct tegra_pmc *pmc) -- 2.17.1