diff options
Diffstat (limited to 'drivers/gpio/gpiolib.h')
| -rw-r--r-- | drivers/gpio/gpiolib.h | 39 |
1 files changed, 21 insertions, 18 deletions
diff --git a/drivers/gpio/gpiolib.h b/drivers/gpio/gpiolib.h index c129a03e2040..58f64056de77 100644 --- a/drivers/gpio/gpiolib.h +++ b/drivers/gpio/gpiolib.h @@ -33,6 +33,8 @@ * @chip: pointer to the corresponding gpiochip, holding static * data for this device * @descs: array of ngpio descriptors. + * @valid_mask: If not %NULL, holds bitmask of GPIOs which are valid to be + * used from the chip. * @desc_srcu: ensures consistent state of GPIO descriptors exposed to users * @ngpio: the number of GPIO lines on this GPIO device, equal to the size * of the @descs array. @@ -67,6 +69,7 @@ struct gpio_device { struct module *owner; struct gpio_chip __rcu *chip; struct gpio_desc *descs; + unsigned long *valid_mask; struct srcu_struct desc_srcu; unsigned int base; u16 ngpio; @@ -186,24 +189,24 @@ struct gpio_desc { struct gpio_device *gdev; unsigned long flags; /* flag symbols are bit numbers */ -#define FLAG_REQUESTED 0 -#define FLAG_IS_OUT 1 -#define FLAG_EXPORT 2 /* protected by sysfs_lock */ -#define FLAG_SYSFS 3 /* exported via /sys/class/gpio/control */ -#define FLAG_ACTIVE_LOW 6 /* value has active low */ -#define FLAG_OPEN_DRAIN 7 /* Gpio is open drain type */ -#define FLAG_OPEN_SOURCE 8 /* Gpio is open source type */ -#define FLAG_USED_AS_IRQ 9 /* GPIO is connected to an IRQ */ -#define FLAG_IRQ_IS_ENABLED 10 /* GPIO is connected to an enabled IRQ */ -#define FLAG_IS_HOGGED 11 /* GPIO is hogged */ -#define FLAG_TRANSITORY 12 /* GPIO may lose value in sleep or reset */ -#define FLAG_PULL_UP 13 /* GPIO has pull up enabled */ -#define FLAG_PULL_DOWN 14 /* GPIO has pull down enabled */ -#define FLAG_BIAS_DISABLE 15 /* GPIO has pull disabled */ -#define FLAG_EDGE_RISING 16 /* GPIO CDEV detects rising edge events */ -#define FLAG_EDGE_FALLING 17 /* GPIO CDEV detects falling edge events */ -#define FLAG_EVENT_CLOCK_REALTIME 18 /* GPIO CDEV reports REALTIME timestamps in events */ -#define FLAG_EVENT_CLOCK_HTE 19 /* GPIO CDEV reports hardware timestamps in events */ +#define FLAG_REQUESTED 0 +#define FLAG_IS_OUT 1 +#define FLAG_EXPORT 2 /* protected by sysfs_lock */ +#define FLAG_SYSFS 3 /* exported via /sys/class/gpio/control */ +#define FLAG_ACTIVE_LOW 6 /* value has active low */ +#define FLAG_OPEN_DRAIN 7 /* Gpio is open drain type */ +#define FLAG_OPEN_SOURCE 8 /* Gpio is open source type */ +#define FLAG_USED_AS_IRQ 9 /* GPIO is connected to an IRQ */ +#define FLAG_IRQ_IS_ENABLED 10 /* GPIO is connected to an enabled IRQ */ +#define FLAG_IS_HOGGED 11 /* GPIO is hogged */ +#define FLAG_TRANSITORY 12 /* GPIO may lose value in sleep or reset */ +#define FLAG_PULL_UP 13 /* GPIO has pull up enabled */ +#define FLAG_PULL_DOWN 14 /* GPIO has pull down enabled */ +#define FLAG_BIAS_DISABLE 15 /* GPIO has pull disabled */ +#define FLAG_EDGE_RISING 16 /* GPIO CDEV detects rising edge events */ +#define FLAG_EDGE_FALLING 17 /* GPIO CDEV detects falling edge events */ +#define FLAG_EVENT_CLOCK_REALTIME 18 /* GPIO CDEV reports REALTIME timestamps in events */ +#define FLAG_EVENT_CLOCK_HTE 19 /* GPIO CDEV reports hardware timestamps in events */ /* Connection label */ struct gpio_desc_label __rcu *label; |