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Subject[PATCH 5/5] Input: ti_am335x_tsc: Mark IRQ as wakeup capable
Date
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@ti.com>
---
drivers/input/touchscreen/ti_am335x_tsc.c | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/drivers/input/touchscreen/ti_am335x_tsc.c b/drivers/input/touchscreen/ti_am335x_tsc.c
index a4f25a915ffc..9e8684ab48f4 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>

@@ -439,6 +440,9 @@ static int titsc_probe(struct platform_device *pdev)
}

device_init_wakeup(&pdev->dev, true);
+ err = dev_pm_set_wake_irq(&pdev->dev, ts_dev->irq);
+ if (err)
+ dev_err(&pdev->dev, "irq wake enable failed.\n");

titsc_writel(ts_dev, REG_IRQSTATUS, TSC_IRQENB_MASK);
titsc_writel(ts_dev, REG_IRQENABLE, IRQENB_FIFO0THRES);
@@ -471,6 +475,7 @@ static int titsc_probe(struct platform_device *pdev)
return 0;

err_free_irq:
+ dev_pm_clear_wake_irq(&pdev->dev);
device_init_wakeup(&pdev->dev, false);
free_irq(ts_dev->irq, ts_dev);
err_free_mem:
@@ -484,6 +489,7 @@ static int titsc_remove(struct platform_device *pdev)
struct titsc *ts_dev = platform_get_drvdata(pdev);
u32 steps;

+ dev_pm_clear_wake_irq(&pdev->dev);
device_init_wakeup(&pdev->dev, false);
free_irq(ts_dev->irq, ts_dev);

--
2.18.0
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