[PATCH 5.15 538/691] Input: adp5589-keys - fix adp5589_gpio_get_value()

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5.15-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Nuno Sa <nuno.sa@xxxxxxxxxx>

commit c684771630e64bc39bddffeb65dd8a6612a6b249 upstream.

The adp5589 seems to have the same behavior as similar devices as
explained in commit 910a9f5636f5 ("Input: adp5588-keys - get value from
data out when dir is out").

Basically, when the gpio is set as output we need to get the value from
ADP5589_GPO_DATA_OUT_A register instead of ADP5589_GPI_STATUS_A.

Fixes: 9d2e173644bb ("Input: ADP5589 - new driver for I2C Keypad Decoder and I/O Expander")
Signed-off-by: Nuno Sa <nuno.sa@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20241001-b4-dev-adp5589-fw-conversion-v1-2-fca0149dfc47@xxxxxxxxxx
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/input/keyboard/adp5589-keys.c |   13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

--- a/drivers/input/keyboard/adp5589-keys.c
+++ b/drivers/input/keyboard/adp5589-keys.c
@@ -391,10 +391,17 @@ static int adp5589_gpio_get_value(struct
 	struct adp5589_kpad *kpad = gpiochip_get_data(chip);
 	unsigned int bank = kpad->var->bank(kpad->gpiomap[off]);
 	unsigned int bit = kpad->var->bit(kpad->gpiomap[off]);
+	int val;
 
-	return !!(adp5589_read(kpad->client,
-			       kpad->var->reg(ADP5589_GPI_STATUS_A) + bank) &
-			       bit);
+	mutex_lock(&kpad->gpio_lock);
+	if (kpad->dir[bank] & bit)
+		val = kpad->dat_out[bank];
+	else
+		val = adp5589_read(kpad->client,
+				   kpad->var->reg(ADP5589_GPI_STATUS_A) + bank);
+	mutex_unlock(&kpad->gpio_lock);
+
+	return !!(val & bit);
 }
 
 static void adp5589_gpio_set_value(struct gpio_chip *chip,






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