linux-kernel - [PATCH V1 1/1] soc: qcom: smp2p: Add wakeup capability to SMP2P IRQ

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Date:   Thu,  5 Aug 2021 21:47:33 +0530
From:   Deepak Kumar Singh <deesin@...eaurora.org>
To:     bjorn.andersson@...aro.org, swboyd@...omium.org,
        clew@...eaurora.org, sibis@...eaurora.org
Cc:     linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-remoteproc@...r.kernel.org,
        Deepak Kumar Singh <deesin@...eaurora.org>,
        Andy Gross <agross@...nel.org>
Subject: [PATCH V1 1/1] soc: qcom: smp2p: Add wakeup capability to SMP2P IRQ

Some use cases require SMP2P interrupts to wake up the host
from suspend. Mark smp2p interrupt as wakeup capable to abort
the suspend.

Signed-off-by: Deepak Kumar Singh <deesin@...eaurora.org>
---
 drivers/soc/qcom/smp2p.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/soc/qcom/smp2p.c b/drivers/soc/qcom/smp2p.c
index 2df4883..f8659b0 100644
--- a/drivers/soc/qcom/smp2p.c
+++ b/drivers/soc/qcom/smp2p.c
@@ -18,6 +18,7 @@
 #include <linux/soc/qcom/smem.h>
 #include <linux/soc/qcom/smem_state.h>
 #include <linux/spinlock.h>
+#include <linux/pm_wakeirq.h>
 
 /*
  * The Shared Memory Point to Point (SMP2P) protocol facilitates communication
@@ -538,9 +539,19 @@ static int qcom_smp2p_probe(struct platform_device *pdev)
 		goto unwind_interfaces;
 	}
 
+	ret = device_init_wakeup(&pdev->dev, true);
+	if (ret)
+		goto unwind_interfaces;
+
+	ret = dev_pm_set_wake_irq(&pdev->dev, irq);
+	if (ret)
+		goto set_wakeup_failed;
 
 	return 0;
 
+set_wakeup_failed:
+	device_init_wakeup(&pdev->dev, false);
+
 unwind_interfaces:
 	list_for_each_entry(entry, &smp2p->inbound, node)
 		irq_domain_remove(entry->domain);
-- 
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