[PATCH 1/3] gpio: tps65219: Fix GPIO input value reads

[Karl Mehltretter <kmehltretter@gmail.com>]

TPS65219_MFP_GPIO_STATUS_MASK is already BIT(4). Passing it to BIT()
again tests bit 16, which cannot be set in the 8-bit MFP_CTRL register,
so GPIO0 is always reported low when configured as an input.

Test the register value with the mask directly.

Fixes: 57e30e00bd5b ("gpio: tps65219: add GPIO support for TPS65219 PMIC")
Cc: stable@vger.kernel.org
Assisted-by: LLM
Signed-off-by: Karl Mehltretter <kmehltretter@gmail.com>
---
Testing:

  - A temporary KUnit test instantiated the driver with a RAM-backed
    regmap under x86_64 QEMU 10.2.1.  The TPS65219 input-high test
    failed on the base commit and passes with this series.
  - This has not been tested on real hardware; testing on affected
    hardware is welcome.

 drivers/gpio/gpio-tps65219.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpio/gpio-tps65219.c b/drivers/gpio/gpio-tps65219.c
index 457fd8a589e89..b25c6f7277680 100644
--- a/drivers/gpio/gpio-tps65219.c
+++ b/drivers/gpio/gpio-tps65219.c
@@ -79,7 +79,7 @@ static int tps65219_gpio_get(struct gpio_chip *gc, unsigned int offset)
 	if (ret)
 		return ret;
 
-	ret = !!(val & BIT(TPS65219_MFP_GPIO_STATUS_MASK));
+	ret = !!(val & TPS65219_MFP_GPIO_STATUS_MASK);
 	dev_warn(dev, "GPIO%d = %d, MULTI_DEVICE_ENABLE, not a standard GPIO\n", offset, ret);
 
 	/*
-- 
2.53.0