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https://github.com/edk2-porting/linux-next.git
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e29482e848
Add support for translating ACPI GPIO pin numbers to Linux GPIO API pins. Needs a gpio controller driver with the acpi handler hook set. Drivers can use acpi_get_gpio() to translate ACPI5 GpioIO and GpioInt resources to Linux GPIO's. Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
20 lines
318 B
C
20 lines
318 B
C
#ifndef _LINUX_ACPI_GPIO_H_
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#define _LINUX_ACPI_GPIO_H_
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#include <linux/errno.h>
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#ifdef CONFIG_GPIO_ACPI
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int acpi_get_gpio(char *path, int pin);
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#else /* CONFIG_GPIO_ACPI */
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static inline int acpi_get_gpio(char *path, int pin)
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{
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return -ENODEV;
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}
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#endif /* CONFIG_GPIO_ACPI */
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#endif /* _LINUX_ACPI_GPIO_H_ */
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