platform/x86: int3472: Stop using devm_gpiod_get()

The intent is to re-use the INT3472 code for parsing Intel camera sensor
GPIOs and mapping them to the sensor for the atomisp driver, which
currently has duplicate code.

On atomisp devices there is no special INT3472 ACPI device, instead
the Intel _DSM to get the GPIO type is part of the ACPI device for
the sensor itself.

To deal with this the mapping is done from ipu_bridge_init() instead of
from a platform-device probe() function, there is no device to tie
the lifetime of the gpiod_get() calls done by the INT3472 code to.

Switch from devm_gpiod_get() to plain gpiod_get() + explicit gpiod_put()
calls, to prepare for the code being re-used in the atomisp driver.

Signed-off-by: Hans de Goede <[email protected]>
Reviewed-by: Sakari Ailus <[email protected]>
Reviewed-by: Andy Shevchenko <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Ilpo Järvinen <[email protected]>

Author: jwrdegoede

drivers/platform/x86/intel/int3472/clk_and_regulator.c

@@ -182,6 +182,7 @@ void skl_int3472_unregister_clock(struct int3472_discrete_device *int3472)
 
 	clkdev_drop(int3472->clock.cl);
 	clk_unregister(int3472->clock.clk);
+	gpiod_put(int3472->clock.ena_gpio);
 }
 
 int skl_int3472_register_regulator(struct int3472_discrete_device *int3472,
@@ -244,12 +245,15 @@ int skl_int3472_register_regulator(struct int3472_discrete_device *int3472,
 	if (IS_ERR(regulator->rdev))
 		return PTR_ERR(regulator->rdev);
 
+	int3472->regulators[int3472->n_regulator_gpios].ena_gpio = gpio;
 	int3472->n_regulator_gpios++;
 	return 0;
 }
 
 void skl_int3472_unregister_regulator(struct int3472_discrete_device *int3472)
 {
-	for (int i = 0; i < int3472->n_regulator_gpios; i++)
+	for (int i = 0; i < int3472->n_regulator_gpios; i++) {
 		regulator_unregister(int3472->regulators[i].rdev);
+		gpiod_put(int3472->regulators[i].ena_gpio);
+	}
 }

drivers/platform/x86/intel/int3472/discrete.c

@@ -117,7 +117,7 @@ skl_int3472_gpiod_get_from_temp_lookup(struct int3472_discrete_device *int3472,
 		return ERR_PTR(ret);
 
 	gpiod_add_lookup_table(lookup);
-	desc = devm_gpiod_get(int3472->dev, con_id, GPIOD_OUT_LOW);
+	desc = gpiod_get(int3472->dev, con_id, GPIOD_OUT_LOW);
 	gpiod_remove_lookup_table(lookup);
 
 	return desc;
@@ -340,6 +340,10 @@ static int skl_int3472_handle_gpio_resources(struct acpi_resource *ares,
 			ret = -EINVAL;
 			break;
 		}
+
+		if (ret)
+			gpiod_put(gpio);
+
 		break;
 	default:
 		dev_warn(int3472->dev,

drivers/platform/x86/intel/int3472/led.c

@@ -56,4 +56,5 @@ void skl_int3472_unregister_pled(struct int3472_discrete_device *int3472)
 
 	led_remove_lookup(&int3472->pled.lookup);
 	led_classdev_unregister(&int3472->pled.classdev);
+	gpiod_put(int3472->pled.gpio);
 }

include/linux/platform_data/x86/int3472.h

@@ -99,6 +99,7 @@ struct int3472_gpio_regulator {
 	struct regulator_consumer_supply supply_map[GPIO_REGULATOR_SUPPLY_MAP_COUNT * 2];
 	char supply_name_upper[GPIO_SUPPLY_NAME_LENGTH];
 	char regulator_name[GPIO_REGULATOR_NAME_LENGTH];
+	struct gpio_desc *ena_gpio;
 	struct regulator_dev *rdev;
 	struct regulator_desc rdesc;
 };