input: touchscreen: gsl3673: fixes the correct way during s2r

The early used the fb for display, the new drm display can't callback
the suspend to resume function in gsl3673 driver.

Change-Id: I36c7d89edaf4052e614c5a354f7a0a12c9c4275a
Signed-off-by: Caesar Wang <[email protected]>

Author: Caesar-github

drivers/input/touchscreen/gsl3673.c

@@ -1025,7 +1025,7 @@ static int gsl3673_ts_init(struct i2c_client *client, struct gsl_ts *ts)
 	return rc;
 }
 
-static int gsl_ts_suspend(struct device *dev)
+static int __maybe_unused gsl_ts_suspend(struct device *dev)
 {
 	struct gsl_ts *ts = dev_get_drvdata(dev);
 	int i;
@@ -1056,7 +1056,7 @@ static int gsl_ts_suspend(struct device *dev)
 	return 0;
 }
 
-static int gsl_ts_resume(struct device *dev)
+static int __maybe_unused gsl_ts_resume(struct device *dev)
 {
 	struct gsl_ts *ts = dev_get_drvdata(dev);
 	int i;
@@ -1089,23 +1089,6 @@ static int gsl_ts_resume(struct device *dev)
 	return 0;
 }
 
-static int gsl_ts_early_suspend(struct tp_device *tp_d)
-{
-	struct gsl_ts *ts = container_of(tp_d, struct gsl_ts, tp);
-
-	gsl_ts_suspend(&ts->client->dev);
-	return 0;
-}
-
-static int gsl_ts_late_resume(struct tp_device *tp_d)
-{
-	struct gsl_ts *ts = container_of(tp_d, struct gsl_ts, tp);
-	int rc;
-
-	rc = gsl_ts_resume(&ts->client->dev);
-	return rc;
-}
-
 static void gsl_download_fw_work(struct work_struct *work)
 {
 	struct gsl_ts *ts = container_of(work, struct gsl_ts, download_fw_work);
@@ -1134,8 +1117,6 @@ static int  gsl_ts_probe(struct i2c_client *client,
 	ts = devm_kzalloc(&client->dev, sizeof(*ts), GFP_KERNEL);
 	if (!ts)
 		return -ENOMEM;
-	ts->tp.tp_resume = gsl_ts_late_resume;
-	ts->tp.tp_suspend = gsl_ts_early_suspend;
 	tp_register_fb(&ts->tp);
 	ts->client = client;
 	i2c_set_clientdata(client, ts);
@@ -1197,6 +1178,8 @@ static int gsl_ts_remove(struct i2c_client *client)
 	return 0;
 }
 
+static SIMPLE_DEV_PM_OPS(gsl_ts_pm, gsl_ts_suspend, gsl_ts_resume);
+
 static const struct of_device_id gsl_ts_ids[] = {
 	{.compatible = "GSL,GSL3673"},
 	{ }
@@ -1214,6 +1197,7 @@ static struct i2c_driver gsl_ts_driver = {
 		.name = GSL3673_I2C_NAME,
 		.owner = THIS_MODULE,
 		.of_match_table = of_match_ptr(gsl_ts_ids),
+		.pm = &gsl_ts_pm,
 	},
 	.probe		= gsl_ts_probe,
 	.remove		= gsl_ts_remove,