Input: tsc2007 - make interrupt optional

In case tsc2007 is used as an ADC sensor there will be no interrupt
provided at all, so set up an interrupt only if one is present.

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Link: https://lore.kernel.org/r/20250824091927.105121-3-clamor95@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

diff --git a/drivers/input/touchscreen/tsc2007_core.c b/drivers/input/touchscreen/tsc2007_core.c
index 9fda83acccb192f97f0a543d5239698539be9f2e..05e00a084c88dec11b1d4758c3428811a55d46ba 100644 (file)
--- a/drivers/input/touchscreen/tsc2007_core.c
+++ b/drivers/input/touchscreen/tsc2007_core.c
@@ -177,7 +177,8 @@ static void tsc2007_stop(struct tsc2007 *ts)
        mb();
        wake_up(&ts->wait);
 
-       disable_irq(ts->irq);
+       if (ts->irq)
+               disable_irq(ts->irq);
 }
 
 static int tsc2007_open(struct input_dev *input_dev)
@@ -188,7 +189,8 @@ static int tsc2007_open(struct input_dev *input_dev)
        ts->stopped = false;
        mb();
 
-       enable_irq(ts->irq);
+       if (ts->irq)
+               enable_irq(ts->irq);
 
        /* Prepare for touch readings - power down ADC and enable PENIRQ */
        err = tsc2007_xfer(ts, PWRDOWN);
@@ -361,17 +363,19 @@ static int tsc2007_probe(struct i2c_client *client)
                        pdata->init_platform_hw();
        }
 
-       err = devm_request_threaded_irq(&client->dev, ts->irq,
-                                       NULL, tsc2007_soft_irq,
-                                       IRQF_ONESHOT,
-                                       client->dev.driver->name, ts);
-       if (err) {
-               dev_err(&client->dev, "Failed to request irq %d: %d\n",
-                       ts->irq, err);
-               return err;
-       }
+       if (ts->irq) {
+               err = devm_request_threaded_irq(&client->dev, ts->irq,
+                                               NULL, tsc2007_soft_irq,
+                                               IRQF_ONESHOT,
+                                               client->dev.driver->name, ts);
+               if (err) {
+                       dev_err(&client->dev, "Failed to request irq %d: %d\n",
+                               ts->irq, err);
+                       return err;
+               }
 
-       tsc2007_stop(ts);
+               tsc2007_stop(ts);
+       }
 
        /* power down the chip (TSC2007_SETUP does not ACK on I2C) */
        err = tsc2007_xfer(ts, PWRDOWN);