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SubjectRe: [PATCH 1/7] LinuxPPS core support.
On Thu, Mar 6, 2008 at 1:09 PM, Rodolfo Giometti <giometti@linux.it> wrote:
> This patch adds the kernel side of the PPS support currently named
> "LinuxPPS".

> diff --git a/include/linux/pps.h b/include/linux/pps.h
> new file mode 100644
> index 0000000..c455443
> --- /dev/null
> +++ b/include/linux/pps.h
> @@ -0,0 +1,204 @@

> +/* The main struct */
> +struct pps_device {
> + struct pps_source_info info; /* PSS source info */
> +
> + struct pps_kparams params; /* PPS's current params */
> +
> + __u32 assert_sequence; /* PPS' assert event seq # */
> + __u32 clear_sequence; /* PPS' clear event seq # */
> + struct pps_ktime assert_tu;
> + struct pps_ktime clear_tu;
> + int current_mode; /* PPS mode at event time */
> +
> + int go; /* PPS event is arrived? */
> + wait_queue_head_t queue; /* PPS event queue */
> +
> + unsigned int id; /* PPS source unique ID */
> + struct cdev cdev;
> + struct device *dev;
> + int devno;
> + struct fasync_struct *async_queue; /* fasync method */
> + spinlock_t lock;
> +
> + atomic_t usage; /* usage count */
> + wait_queue_head_t usage_queue;
> +
> + struct class class_dev;

Why is an entire class embedded into every device? :)

Kay


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