mfd: tps65912: Use devm helper functions to simplify probe

This simplifies probe and also allows us to remove the remove
callbacks from the core and interface drivers. Do that here.

Signed-off-by: Andrew Davis <afd@ti.com>
Link: https://lore.kernel.org/r/20240613175430.57698-1-afd@ti.com
Signed-off-by: Lee Jones <lee@kernel.org>

Author: glneo

drivers/mfd/tps65912-core.c

@@ -90,29 +90,22 @@ int tps65912_device_init(struct tps65912 *tps)
 {
 	int ret;
 
-	ret = regmap_add_irq_chip(tps->regmap, tps->irq, IRQF_ONESHOT, 0,
-				  &tps65912_irq_chip, &tps->irq_data);
+	ret = devm_regmap_add_irq_chip(tps->dev, tps->regmap, tps->irq,
+				       IRQF_ONESHOT, 0, &tps65912_irq_chip,
+				       &tps->irq_data);
 	if (ret)
 		return ret;
 
-	ret = mfd_add_devices(tps->dev, PLATFORM_DEVID_AUTO, tps65912_cells,
-			      ARRAY_SIZE(tps65912_cells), NULL, 0,
-			      regmap_irq_get_domain(tps->irq_data));
-	if (ret) {
-		regmap_del_irq_chip(tps->irq, tps->irq_data);
+	ret = devm_mfd_add_devices(tps->dev, PLATFORM_DEVID_AUTO, tps65912_cells,
+				   ARRAY_SIZE(tps65912_cells), NULL, 0,
+				   regmap_irq_get_domain(tps->irq_data));
+	if (ret)
 		return ret;
-	}
 
 	return 0;
 }
 EXPORT_SYMBOL_GPL(tps65912_device_init);
 
-void tps65912_device_exit(struct tps65912 *tps)
-{
-	regmap_del_irq_chip(tps->irq, tps->irq_data);
-}
-EXPORT_SYMBOL_GPL(tps65912_device_exit);
-
 MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
 MODULE_DESCRIPTION("TPS65912x MFD Driver");
 MODULE_LICENSE("GPL v2");

drivers/mfd/tps65912-i2c.c

@@ -42,13 +42,6 @@ static int tps65912_i2c_probe(struct i2c_client *client)
 	return tps65912_device_init(tps);
 }
 
-static void tps65912_i2c_remove(struct i2c_client *client)
-{
-	struct tps65912 *tps = i2c_get_clientdata(client);
-
-	tps65912_device_exit(tps);
-}
-
 static const struct i2c_device_id tps65912_i2c_id_table[] = {
 	{ "tps65912" },
 	{ /* sentinel */ }
@@ -61,7 +54,6 @@ static struct i2c_driver tps65912_i2c_driver = {
 		.of_match_table = tps65912_i2c_of_match_table,
 	},
 	.probe		= tps65912_i2c_probe,
-	.remove		= tps65912_i2c_remove,
 	.id_table       = tps65912_i2c_id_table,
 };
 module_i2c_driver(tps65912_i2c_driver);

drivers/mfd/tps65912-spi.c

@@ -42,13 +42,6 @@ static int tps65912_spi_probe(struct spi_device *spi)
 	return tps65912_device_init(tps);
 }
 
-static void tps65912_spi_remove(struct spi_device *spi)
-{
-	struct tps65912 *tps = spi_get_drvdata(spi);
-
-	tps65912_device_exit(tps);
-}
-
 static const struct spi_device_id tps65912_spi_id_table[] = {
 	{ "tps65912", 0 },
 	{ /* sentinel */ }
@@ -61,7 +54,6 @@ static struct spi_driver tps65912_spi_driver = {
 		.of_match_table = tps65912_spi_of_match_table,
 	},
 	.probe		= tps65912_spi_probe,
-	.remove		= tps65912_spi_remove,
 	.id_table       = tps65912_spi_id_table,
 };
 module_spi_driver(tps65912_spi_driver);

include/linux/mfd/tps65912.h

@@ -314,6 +314,5 @@ struct tps65912 {
 extern const struct regmap_config tps65912_regmap_config;
 
 int tps65912_device_init(struct tps65912 *tps);
-void tps65912_device_exit(struct tps65912 *tps);
 
 #endif /*  __LINUX_MFD_TPS65912_H */