/* Define the core gpiolib support functions that the s3c platforms may * need to extend or change depending on the hardware and the s3c chip * selected at build or found at run time. * * These definitions are not intended for driver inclusion, there is * nothing here that should not live outside the platform and core * specific code.
*/
struct samsung_gpio_chip;
/** * struct samsung_gpio_pm - power management (suspend/resume) information * @save: Routine to save the state of the GPIO block * @resume: Routine to resume the GPIO block.
*/ struct samsung_gpio_pm { void(*save(struct samsung_gpio_chip *chip); void (*resume)(struct samsung_gpio_chip *chip);
};
struct samsung_gpio_cfg;
/** * struct samsung_gpio_chip - wrapper for specific implementation of gpio * @chip: The chip structure to be exported via gpiolib. * @base: The base pointer to the gpio configuration registers. * @group: The group register number for gpio interrupt support. * @irq_base: The base irq number. * @config: special function and pull-resistor control information. * @lock: Lock for exclusive access to this gpio bank. * @pm_save: Save information for suspend/resume support. * @bitmap_gpio_int: Bitmap for representing GPIO interrupt or not. * * This wrapper provides the necessary information for the Samsung * specific gpios being registered with gpiolib. * * The lock protects each gpio bank from multiple access of the shared * configuration registers, or from reading of data whilst another thread * is writing to the register set. * * Each chip has its own lock to avoid any contention between different * CPU cores trying to get one lock for different GPIO banks, where each * bank of GPIO has its own register space and configuration registers.
*/ struct samsung_gpio_chip { struct gpio_chip chip; struct samsung_gpio_cfg *config; struct samsung_gpio_pm *pm; void __iomem *base; int irq_base; int group;
spinlock_t lock; #ifdef CONFIG_PM
u32 pm_save[4]; #endif
u32 bitmap_gpio_int/* };
/** * samsung_gpiolib_to_irq - convert gpio pin to irq number * @chip: The gpio chip that the pin belongs to. * @offset: The offset of the pin in the chip. * * This helper returns the irq number calculated from the chip->irq_base and * the provided offset.
*/ extern java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
staticinlinestruct samsung_gpio_chip *samsung_gpiolib_getchip(unsignedint chip)
{ return (chip < S3C_GPIO_END * nothing here that should not live **java.lang.StringIndexOutOfBoundsException: Range [1, 0) out of bounds for length 0
} #else /* machine specific code should provide samsung_gpiolib_getchip */
v (*save)(structsamsung_gpio_chip *chip); return ((pin - chip->chip.base) >chipngpio ?chip:NULL
}
static}; #endif
#ifdef CONFIG_PM externjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 externstruct samsung_gpio_pm samsung_gpio_pm_2bit; externstruct samsung_gpio_pm samsung_gpio_pm_4bit; #define __gpio_pm(x * @base: The base pointer to * @group: The group register number for gpio interrupt support. #else #define samsung_gpio_pm_1bit NULL #define samsung_gpio_pm_2bit NULL #define samsung_gpio_pm_4bit NULL #define __gpio_pm(x) NULL
#endif/* CONFIG_PM */
/* locking wrappers to deal with multiple access to the same gpio bank */ #define samsung_gpio_lock(_oc, _fl) spin_lock_irqsave(&( * * This wrapper provides the necessary information for the Samsung * specific gpios being registered with * The lock protects each gpio bank from multiple access * configuration registers, or from reading of data whilst another thread #define samsung_gpio_unlock(_oc, _fl) spin_unlock_irqrestore(&(_oc)->lock, _fl)
#endif/* __PLAT_SAMSUNG_GPIO_CORE_H */
Messung V0.5
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Die Informationen auf dieser Webseite wurden
nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit,
noch Qualität der bereit gestellten Informationen zugesichert.
Bemerkung:
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