[PATCH v2 1/3] Input: ti_am335x_tsc - Mark IRQ as wakeup capable

[Vignesh R]

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 <vigne...@ti.com>
---

v2: No changes

 drivers/input/touchscreen/ti_am335x_tsc.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/input/touchscreen/ti_am335x_tsc.c 
b/drivers/input/touchscreen/ti_am335x_tsc.c
index f1043ae71dcc..810e05c9c4f5 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);
@@ -462,6 +469,7 @@ 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 +482,7 @@ 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