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Subject[PATCH v3 1/3] 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>
---
v3: Drop unneeded device_may_wakeup() check

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 f1043ae71dcc..3908c21862c7 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 +433,10 @@ static int titsc_probe(struct platform_device *pdev)
goto err_free_mem;
}

+ 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);
@@ -462,6 +467,7 @@ static int titsc_probe(struct platform_device *pdev)
return 0;

err_free_irq:
+ dev_pm_clear_wake_irq(tscadc_dev->dev);
free_irq(ts_dev->irq, ts_dev);
err_free_mem:
input_free_device(input_dev);
@@ -474,6 +480,7 @@ static int titsc_remove(struct platform_device *pdev)
struct titsc *ts_dev = platform_get_drvdata(pdev);
u32 steps;

+ dev_pm_clear_wake_irq(ts_dev->mfd_tscadc->dev);
free_irq(ts_dev->irq, ts_dev);

/* total steps followed by the enable mask */
--
2.17.0
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