Received-SPF: Pass (protection.outlook.com: domain of amd.com designates
 165.204.84.17 as permitted sender) receiver=protection.outlook.com;
 client-ip=165.204.84.17; helo=SATLEXMB03.amd.com; pr=C
From:   Vijendar Mukunda <Vijendar.Mukunda@amd.com>
To:     <vkoul@kernel.org>
CC:     <amadeuszx.slawinski@linux.intel.com>, <Mario.Limonciello@amd.com>,
        <Sunil-kumar.Dommati@amd.com>, <Basavaraj.Hiregoudar@amd.com>,
        <Mastan.Katragadda@amd.com>, <Arungopal.kondaveeti@amd.com>,
        Vijendar Mukunda <Vijendar.Mukunda@amd.com>,
        Bard Liao <yung-chuan.liao@linux.intel.com>,
        Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>,
        Sanyog Kale <sanyog.r.kale@intel.com>,
        "moderated list:SOUNDWIRE SUBSYSTEM" <alsa-devel@alsa-project.org>,
        open list <linux-kernel@vger.kernel.org>
Subject: [PATCH V2 7/8] soundwire: amd: handle soundwire wake enable interrupt
Date:   Mon, 13 Feb 2023 15:10:30 +0530
Message-ID: <20230213094031.2231058-8-Vijendar.Mukunda@amd.com>
In-Reply-To: <20230213094031.2231058-1-Vijendar.Mukunda@amd.com>
References: <20230213094031.2231058-1-Vijendar.Mukunda@amd.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Content-Type: text/plain
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Feb 2023 09:37:58.1237
 (UTC)
X-MS-Exchange-CrossTenant-Network-Message-Id: e4835142-14ff-423c-d98c-08db0da5fdda
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=[SATLEXMB03.amd.com]
X-MS-Exchange-CrossTenant-AuthSource: CO1NAM11FT033.eop-nam11.prod.protection.outlook.com
X-MS-Exchange-CrossTenant-AuthAs: Anonymous
X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem
X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH8PR12MB7027
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

Add wake enable interrupt support for both the soundwire manager
instances.

Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Signed-off-by: Mastan Katragadda <Mastan.Katragadda@amd.com>
---
 drivers/soundwire/amd_manager.c | 10 ++++++++++
 drivers/soundwire/amd_manager.h |  1 +
 2 files changed, 11 insertions(+)

diff --git a/drivers/soundwire/amd_manager.c b/drivers/soundwire/amd_manager.c
index eced189ba6e0..e53dc67f8529 100644
--- a/drivers/soundwire/amd_manager.c
+++ b/drivers/soundwire/amd_manager.c
@@ -934,6 +934,13 @@ static void amd_sdw_update_slave_status(u32 status_change_0to7, u32 status_chang
 	}
 }
 
+static void amd_sdw_process_wake_event(struct amd_sdw_manager *amd_manager)
+{
+	pm_request_resume(amd_manager->dev);
+	acp_reg_writel(0x00, amd_manager->acp_mmio + ACP_SW_WAKE_EN(amd_manager->instance));
+	acp_reg_writel(0x00, amd_manager->mmio + ACP_SW_STATE_CHANGE_STATUS_8TO11);
+}
+
 static void amd_sdw_irq_thread(struct work_struct *work)
 {
 	struct amd_sdw_manager *amd_manager =
@@ -945,6 +952,9 @@ static void amd_sdw_irq_thread(struct work_struct *work)
 	status_change_0to7 = acp_reg_readl(amd_manager->mmio + ACP_SW_STATE_CHANGE_STATUS_0TO7);
 	dev_dbg(amd_manager->dev, "%s [SDW%d] SDW INT: 0to7=0x%x, 8to11=0x%x\n",
 		__func__, amd_manager->instance, status_change_0to7, status_change_8to11);
+	if (status_change_8to11 & AMD_SDW_WAKE_STAT_MASK)
+		return amd_sdw_process_wake_event(amd_manager);
+
 	if (status_change_8to11 & AMD_SDW_PREQ_INTR_STAT) {
 		amd_sdw_read_and_process_ping_status(amd_manager);
 	} else {
diff --git a/drivers/soundwire/amd_manager.h b/drivers/soundwire/amd_manager.h
index 6ec37612ae4e..86bc6d4f48bf 100644
--- a/drivers/soundwire/amd_manager.h
+++ b/drivers/soundwire/amd_manager.h
@@ -190,6 +190,7 @@
 #define AMD_SDW_CLK_STOP_DONE				1
 #define AMD_SDW_CLK_RESUME_REQ				2
 #define AMD_SDW_CLK_RESUME_DONE				3
+#define AMD_SDW_WAKE_STAT_MASK				BIT(16)
 
 enum amd_sdw_cmd_type {
 	AMD_SDW_CMD_PING = 0,
-- 
2.34.1