664e3e5ac6
Instead of asking each driver to register to ACPI events we can just call acpi_gpiochip_register_interrupts() for each chip that has an ACPI handle. The function checks chip->to_irq and if it is set to NULL (a GPIO driver that doesn't do interrupts) the function does nothing. We also add the a new header drivers/gpio/gpiolib.h that is used for functions internal to gpiolib and add ACPI GPIO chip registering functions to that header. Once that is done we can remove call to acpi_gpiochip_register_interrupts() from its only user, pinctrl-baytrail.c Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
46 lines
1.1 KiB
C
46 lines
1.1 KiB
C
#ifndef _LINUX_ACPI_GPIO_H_
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#define _LINUX_ACPI_GPIO_H_
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#include <linux/device.h>
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#include <linux/err.h>
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#include <linux/errno.h>
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#include <linux/gpio.h>
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#include <linux/gpio/consumer.h>
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/**
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* struct acpi_gpio_info - ACPI GPIO specific information
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* @gpioint: if %true this GPIO is of type GpioInt otherwise type is GpioIo
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* @active_low: in case of @gpioint, the pin is active low
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*/
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struct acpi_gpio_info {
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bool gpioint;
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bool active_low;
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};
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#ifdef CONFIG_GPIO_ACPI
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struct gpio_desc *acpi_get_gpiod_by_index(struct device *dev, int index,
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struct acpi_gpio_info *info);
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#else /* CONFIG_GPIO_ACPI */
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static inline struct gpio_desc *
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acpi_get_gpiod_by_index(struct device *dev, int index,
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struct acpi_gpio_info *info)
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{
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return ERR_PTR(-ENOSYS);
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}
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#endif /* CONFIG_GPIO_ACPI */
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static inline int acpi_get_gpio_by_index(struct device *dev, int index,
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struct acpi_gpio_info *info)
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{
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struct gpio_desc *desc = acpi_get_gpiod_by_index(dev, index, info);
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if (IS_ERR(desc))
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return PTR_ERR(desc);
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return desc_to_gpio(desc);
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}
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#endif /* _LINUX_ACPI_GPIO_H_ */
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