Input: pixcir_i2c_ts - switch to DEFINE_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr()

SIMPLE_DEV_PM_OPS() is deprecated as it requires explicit protection
against unused function warnings.  The new combination of pm_sleep_ptr()
and DEFINE_SIMPLE_DEV_PM_OPS() allows the compiler to see the functions,
thus suppressing the warning, but still allowing the unused code to be
removed. Thus also drop the __maybe_unused markings.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Fabio Estevam <festevam@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20230102181842.718010-58-jic23@kernel.orgSigned-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/touchscreen/pixcir_i2c_ts.c

@@ -405,7 +405,7 @@ static void pixcir_input_close(struct input_dev *dev)
 	pixcir_stop(ts);
 }
 
-static int __maybe_unused pixcir_i2c_ts_suspend(struct device *dev)
+static int pixcir_i2c_ts_suspend(struct device *dev)
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	struct pixcir_i2c_ts_data *ts = i2c_get_clientdata(client);
@@ -432,7 +432,7 @@ static int __maybe_unused pixcir_i2c_ts_suspend(struct device *dev)
 	return ret;
 }
 
-static int __maybe_unused pixcir_i2c_ts_resume(struct device *dev)
+static int pixcir_i2c_ts_resume(struct device *dev)
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	struct pixcir_i2c_ts_data *ts = i2c_get_clientdata(client);
@@ -459,8 +459,8 @@ static int __maybe_unused pixcir_i2c_ts_resume(struct device *dev)
 	return ret;
 }
 
-static SIMPLE_DEV_PM_OPS(pixcir_dev_pm_ops,
-			 pixcir_i2c_ts_suspend, pixcir_i2c_ts_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(pixcir_dev_pm_ops,
+				pixcir_i2c_ts_suspend, pixcir_i2c_ts_resume);
 
 static int pixcir_i2c_ts_probe(struct i2c_client *client)
 {
@@ -614,7 +614,7 @@ MODULE_DEVICE_TABLE(of, pixcir_of_match);
 static struct i2c_driver pixcir_i2c_ts_driver = {
 	.driver = {
 		.name	= "pixcir_ts",
-		.pm	= &pixcir_dev_pm_ops,
+		.pm	= pm_sleep_ptr(&pixcir_dev_pm_ops),
 		.of_match_table = of_match_ptr(pixcir_of_match),
 	},
 	.probe_new	= pixcir_i2c_ts_probe,