linux-kernel - [PATCH] Input: ti_am335x_tsc - Mark IRQ as wakeup capable

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Date:	Fri, 6 May 2016 15:46:41 +0530
From:	Vignesh R <vigneshr@...com>
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>
CC:	Dave Gerlach <d-gerlach@...com>, Vignesh R <vigneshr@...com>,
	<linux-input@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-omap@...r.kernel.org>
Subject: [PATCH] Input: ti_am335x_tsc - Mark IRQ as wakeup capable

On AM335x, ti_am335x_tsc can wake up the system from suspend, mark the
IRQ as wakeup capable, so that device irq is not disabled during system
suspend.

Signed-off-by: Vignesh R <vigneshr@...com>
---
 drivers/input/touchscreen/ti_am335x_tsc.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/input/touchscreen/ti_am335x_tsc.c b/drivers/input/touchscreen/ti_am335x_tsc.c
index 8b3f15ca7725..423f275ffab8 100644
--- a/drivers/input/touchscreen/ti_am335x_tsc.c
+++ b/drivers/input/touchscreen/ti_am335x_tsc.c
@@ -27,6 +27,7 @@
 #include <linux/of.h>
 #include <linux/of_device.h>
 #include <linux/sort.h>
+#include <linux/pm_wakeirq.h>
 
 #include <linux/mfd/ti_am335x_tscadc.h>
 
@@ -432,6 +433,12 @@ static int titsc_probe(struct platform_device *pdev)
 		goto err_free_mem;
 	}
 
+	if (device_may_wakeup(tscadc_dev->dev)) {
+		err = dev_pm_set_wake_irq(tscadc_dev->dev, ts_dev->irq);
+		if (err)
+			dev_err(&pdev->dev, "irq wake enable failed.\n");
+	}
+
 	titsc_writel(ts_dev, REG_IRQENABLE, IRQENB_FIFO0THRES);
 	titsc_writel(ts_dev, REG_IRQENABLE, IRQENB_EOS);
 	err = titsc_config_wires(ts_dev);
-- 
2.8.2