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Wed, 26 Feb 2020 10:48:09 +0000 From: Akshu Agrawal To: Subject: [PATCH] ASoC: amd: Allow I2S wake event after ACP is powerd On Date: Wed, 26 Feb 2020 16:17:44 +0530 Message-Id: <20200226104746.208656-1-akshu.agrawal@amd.com> X-Mailer: git-send-email 2.17.1 X-ClientProxiedBy: MAXPR0101CA0011.INDPRD01.PROD.OUTLOOK.COM (2603:1096:a00:c::21) To MN2PR12MB2878.namprd12.prod.outlook.com (2603:10b6:208:aa::15) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from ETHANOL2.amd.com (165.204.156.251) by MAXPR0101CA0011.INDPRD01.PROD.OUTLOOK.COM (2603:1096:a00:c::21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2750.18 via Frontend Transport; Wed, 26 Feb 2020 10:48:06 +0000 X-Mailer: git-send-email 2.17.1 X-Originating-IP: [165.204.156.251] X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-HT: Tenant X-MS-Office365-Filtering-Correlation-Id: 05ecfdab-50cc-4128-2458-08d7baa95e35 X-MS-TrafficTypeDiagnostic: MN2PR12MB3933:|MN2PR12MB3933: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:2582; 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On turning ACP On, ACP_PME_EN gets cleared. Setting the bit back ensures that wake event can be received when ACP is On. Signed-off-by: Akshu Agrawal --- sound/soc/amd/raven/pci-acp3x.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/sound/soc/amd/raven/pci-acp3x.c b/sound/soc/amd/raven/pci-acp3x.c index da60e2ec5535..f25ce50f1a90 100644 --- a/sound/soc/amd/raven/pci-acp3x.c +++ b/sound/soc/amd/raven/pci-acp3x.c @@ -38,8 +38,13 @@ static int acp3x_power_on(void __iomem *acp3x_base) timeout = 0; while (++timeout < 500) { val = rv_readl(acp3x_base + mmACP_PGFSM_STATUS); - if (!val) + if (!val) { + /* Set PME_EN as after ACP power On, + * PME_EN gets cleared + */ + rv_writel(0x1, acp3x_base + mmACP_PME_EN); return 0; + } udelay(1); } return -ETIMEDOUT;