[PATCH 2/3] gpio: tps65219: Use the variant-specific direction callback

[Karl Mehltretter <kmehltretter@gmail.com>]

The TPS65214 template installs its own get_direction callback because
its direction bit is in GENERAL_CONFIG. The shared get and direction
callbacks nevertheless call tps65219_gpio_get_direction() directly and
interpret the unrelated TPS65219 MFP bit.

On TPS65214 this can reject reads from an input and skip the change from
input to output. Call the callback selected by the gpio_chip template
instead.

Fixes: 1b6ab07c0c80 ("gpio: tps65219: Add support for TI TPS65214 PMIC")
Cc: stable@vger.kernel.org
Assisted-by: LLM
Signed-off-by: Karl Mehltretter <kmehltretter@gmail.com>
---
Testing:

  - This callback path was exercised together with patch 3 by a
    temporary KUnit test using a RAM-backed regmap under x86_64 QEMU
    10.2.1.  The TPS65214 direction-output 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 | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpio/gpio-tps65219.c b/drivers/gpio/gpio-tps65219.c
index b25c6f7277680..479a80ef76543 100644
--- a/drivers/gpio/gpio-tps65219.c
+++ b/drivers/gpio/gpio-tps65219.c
@@ -87,7 +87,7 @@ static int tps65219_gpio_get(struct gpio_chip *gc, unsigned int offset)
 	 * status bit.
 	 */
 
-	if (tps65219_gpio_get_direction(gc, offset) == GPIO_LINE_DIRECTION_OUT)
+	if (gc->get_direction(gc, offset) == GPIO_LINE_DIRECTION_OUT)
 		return -ENOTSUPP;
 
 	return ret;
@@ -176,7 +176,7 @@ static int tps65219_gpio_direction_input(struct gpio_chip *gc, unsigned int offs
 		return -ENOTSUPP;
 	}
 
-	if (tps65219_gpio_get_direction(gc, offset) == GPIO_LINE_DIRECTION_IN)
+	if (gc->get_direction(gc, offset) == GPIO_LINE_DIRECTION_IN)
 		return 0;
 
 	return gpio->change_dir(gc, offset, GPIO_LINE_DIRECTION_IN);
@@ -190,7 +190,7 @@ static int tps65219_gpio_direction_output(struct gpio_chip *gc, unsigned int off
 	if (offset != TPS6521X_GPIO0_IDX)
 		return 0;
 
-	if (tps65219_gpio_get_direction(gc, offset) == GPIO_LINE_DIRECTION_OUT)
+	if (gc->get_direction(gc, offset) == GPIO_LINE_DIRECTION_OUT)
 		return 0;
 
 	return gpio->change_dir(gc, offset, GPIO_LINE_DIRECTION_OUT);
-- 
2.53.0