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gpio: idio-16: Define fixed direction of the GPIO lines 

The direction of the IDIO-16 GPIO lines is fixed with the first 16 lines
as output and the remaining 16 lines as input. Set the gpio_config
fixed_direction_output member to represent the fixed direction of the
GPIO lines.

Fixes: db02247827 ("gpio: idio-16: Migrate to the regmap API")
Reported-by: Mark Cave-Ayland <mark.caveayland@nutanix.com>
Closes: https://lore.kernel.org/r/9b0375fd-235f-4ee1-a7fa-daca296ef6bf@nutanix.com
Suggested-by: Michael Walle <mwalle@kernel.org>
Cc: stable@vger.kernel.org # ae495810cffe: gpio: regmap: add the .fixed_direction_output configuration parameter
Cc: stable@vger.kernel.org
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: William Breathitt Gray <wbg@kernel.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20251020-fix-gpio-idio-16-regmap-v2-3-ebeb50e93c33@kernel.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
This commit is contained in:
William Breathitt Gray 2025-10-20 17:51:46 +09:00 committed by Bartosz Golaszewski
parent 00aaae60fa
commit 2ba5772e53
1 changed files with 5 additions and 0 deletions
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5
drivers/gpio/gpio-idio-16.c
View File

@ -6,6 +6,7 @@
#define DEFAULT_SYMBOL_NAMESPACE "GPIO_IDIO_16"
#include <linux/bitmap.h>
#include <linux/bits.h>
#include <linux/device.h>
#include <linux/err.h>
@ -107,6 +108,7 @@ int devm_idio_16_regmap_register(struct device *const dev,
struct idio_16_data *data;
struct regmap_irq_chip *chip;
struct regmap_irq_chip_data *chip_data;
DECLARE_BITMAP(fixed_direction_output, IDIO_16_NGPIO);
if (!config->parent)
return -EINVAL;
@ -164,6 +166,9 @@ int devm_idio_16_regmap_register(struct device *const dev,
gpio_config.irq_domain = regmap_irq_get_domain(chip_data);
gpio_config.reg_mask_xlate = idio_16_reg_mask_xlate;
bitmap_from_u64(fixed_direction_output, GENMASK_U64(15, 0));
gpio_config.fixed_direction_output = fixed_direction_output;
return PTR_ERR_OR_ZERO(devm_gpio_regmap_register(dev, &gpio_config));
}
EXPORT_SYMBOL_GPL(devm_idio_16_regmap_register);