mfd: max8997: Enale irq-wakeup unconditionally

BugLink: https://bugs.launchpad.net/bugs/1854855

[ Upstream commit efddff27 ]

IRQ wake up support for MAX8997 driver was initially configured by
respective property in pdata. However, after the driver conversion to
device-tree, setting it was left as 'todo'. Nowadays most of other PMIC MFD
drivers initialized from device-tree assume that they can be an irq wakeup
source, so enable it also for MAX8997. This fixes support for wakeup from
MAX8997 RTC alarm.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Connor Kuehl <connor.kuehl@canonical.com>
Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>

drivers/mfd/max8997.c

@@ -156,12 +156,6 @@ static struct max8997_platform_data *max8997_i2c_parse_dt_pdata(
 
 	pd->ono = irq_of_parse_and_map(dev->of_node, 1);
 
-	/*
-	 * ToDo: the 'wakeup' member in the platform data is more of a linux
-	 * specfic information. Hence, there is no binding for that yet and
-	 * not parsed here.
-	 */
-
 	return pd;
 }
 
@@ -249,7 +243,7 @@ static int max8997_i2c_probe(struct i2c_client *i2c,
 	 */
 
 	/* MAX8997 has a power button input. */
-	device_init_wakeup(max8997->dev, pdata->wakeup);
+	device_init_wakeup(max8997->dev, true);
 
 	return ret;
 

include/linux/mfd/max8997.h

@@ -178,7 +178,6 @@ struct max8997_led_platform_data {
 struct max8997_platform_data {
 	/* IRQ */
 	int ono;
-	int wakeup;
 
 	/* ---- PMIC ---- */
 	struct max8997_regulator_data *regulators;