diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2025-02-19 22:04:33 +0100 |
|---|---|---|
| committer | Bartosz Golaszewski <bartosz.golaszewski@linaro.org> | 2025-02-24 20:49:20 +0100 |
| commit | 2145ba374069ee8edc9d29c2a6b56fe4a28a6e2d (patch) | |
| tree | 4071a3ab0750bfeb3893ce833062b3759bb26282 /include | |
| parent | 45af02f06f6943d73cf9309fd2a63a908b587f57 (diff) | |
gpio: mmio: Add flag for calling pinctrl back-end
It turns out that with this flag we can switch over an entire
driver to use gpio-mmio instead of a bunch of custom code,
also providing get/set_multiple() to it in the process, so it
seems like a reasonable feature to add.
The generic pin control backend requires us to call the
gpiochip_generic_request(), gpiochip_generic_free(),
pinctrl_gpio_direction_output() and pinctrl_gpio_direction_input()
callbacks, so if the new flag for a pin control back-end
is set, we make sure these functions get called as
expected.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250219-vf610-mmio-v3-1-588b64f0b689@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/gpio/driver.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h index f2145e938b29..ae96a2f260fb 100644 --- a/include/linux/gpio/driver.h +++ b/include/linux/gpio/driver.h @@ -397,6 +397,7 @@ struct gpio_irq_chip { * @reg_dir_in: direction in setting register for generic GPIO * @bgpio_dir_unreadable: indicates that the direction register(s) cannot * be read and we need to rely on out internal state tracking. + * @bgpio_pinctrl: the generic GPIO uses a pin control backend. * @bgpio_bits: number of register bits used for a generic GPIO i.e. * <register width> * 8 * @bgpio_lock: used to lock chip->bgpio_data. Also, this is needed to keep @@ -481,6 +482,7 @@ struct gpio_chip { void __iomem *reg_dir_out; void __iomem *reg_dir_in; bool bgpio_dir_unreadable; + bool bgpio_pinctrl; int bgpio_bits; raw_spinlock_t bgpio_lock; unsigned long bgpio_data; @@ -721,6 +723,7 @@ int bgpio_init(struct gpio_chip *gc, struct device *dev, #define BGPIOF_READ_OUTPUT_REG_SET BIT(4) /* reg_set stores output value */ #define BGPIOF_NO_OUTPUT BIT(5) /* only input */ #define BGPIOF_NO_SET_ON_INPUT BIT(6) +#define BGPIOF_PINCTRL_BACKEND BIT(7) /* Call pinctrl direction setters */ #ifdef CONFIG_GPIOLIB_IRQCHIP int gpiochip_irqchip_add_domain(struct gpio_chip *gc, |