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Tue, 13 Sep 2022 21:38:38 -0700 From: Petlozu Pravareshwar To: , , , , , , , , , CC: , Prathamesh Shete Subject: [PATCH] soc/tegra: pmc: Process wake events during resume Date: Wed, 14 Sep 2022 04:38:31 +0000 Message-ID: <20220914043831.654836-1-petlozup@nvidia.com> X-Mailer: git-send-email 2.17.1 X-NVConfidentiality: public MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CO1NAM11FT030:EE_|PH7PR12MB5949:EE_ X-MS-Office365-Filtering-Correlation-Id: 3c3cffee-da32-49fb-015a-08da960b0586 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:216.228.117.160;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge1.nvidia.com;CAT:NONE;SFS:(13230022)(4636009)(136003)(396003)(376002)(39860400002)(346002)(451199015)(46966006)(36840700001)(40470700004)(86362001)(47076005)(426003)(7696005)(8676002)(7636003)(316002)(356005)(478600001)(40480700001)(110136005)(82740400003)(336012)(107886003)(54906003)(36756003)(36860700001)(2906002)(2616005)(83380400001)(26005)(70586007)(186003)(8936002)(1076003)(82310400005)(5660300002)(921005)(40460700003)(41300700001)(6666004)(70206006)(4326008);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 14 Sep 2022 04:38:50.6883 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 3c3cffee-da32-49fb-015a-08da960b0586 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.160];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: CO1NAM11FT030.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB5949 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" During PMC 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 | 44 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) diff --git a/drivers/soc/tegra/pmc.c b/drivers/soc/tegra/pmc.c index 8c7b46ac6ad6..f275af15f2d0 100644 --- a/drivers/soc/tegra/pmc.c +++ b/drivers/soc/tegra/pmc.c @@ -27,6 +27,7 @@ #include #include #include +#include #include #include #include @@ -3181,6 +3182,40 @@ static void wke_clear_wake_status(void) WAKE_AOWAKE_STATUS_W((i * 32) + wake)); } } + +/* translate sc7 wake sources back into irqs to catch edge triggered wakeu= ps */ +static void process_wake_event(int index, u32 status) +{ + int irq; + irq_hw_number_t hwirq; + int wake; + unsigned long flags; + struct irq_desc *desc; + unsigned long ulong_status =3D (unsigned long)status; + + dev_info(pmc->dev, "Wake[%d:%d] status=3D0x%x\n", (index + 1) * 32, + index * 32, status); + for_each_set_bit(wake, &ulong_status, 32) { + hwirq =3D wake + 32 * index; + +#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY + irq =3D irq_find_mapping(pmc->domain, hwirq); +#else + irq =3D hwirq; +#endif + desc =3D irq_to_desc(irq); + if (!desc || !desc->action || !desc->action->name) { + dev_info(pmc->dev, "Resume caused by WAKE%d, irq %d\n", + (wake + 32 * index), irq); + continue; + } + dev_info(pmc->dev, "Resume caused by WAKE%d, %s\n", + (wake + 32 * index), desc->action->name); + local_irq_save(flags); + generic_handle_irq(irq); + local_irq_restore(flags); + } +} #endif /* CONFIG_ARM64 */ =20 static int tegra_pmc_suspend(struct device *dev) @@ -3219,6 +3254,15 @@ static int tegra_pmc_resume(struct device *dev) struct tegra_pmc *pmc =3D dev_get_drvdata(dev); =20 tegra_pmc_writel(pmc, 0x0, PMC_SCRATCH41); +#else /* CONFIG_ARM64 */ + int i; + u32 status; + + for (i =3D 0; i < WAKE_NR_VECTORS; i++) { + status =3D readl(pmc->wake + WAKE_AOWAKE_STATUS_R(i)); + status =3D status & readl(pmc->wake + WAKE_AOWAKE_TIER2_ROUTING(i)); + process_wake_event(i, status); + } #endif =20 return 0; --=20 2.17.1