SND_INTERVAL_REFINE(9) PCM API SND_INTERVAL_REFINE(9)NAME
snd_interval_refine - refine the interval value of configurator
int snd_interval_refine(struct snd_interval * i, const struct snd_interval * v);
the interval value to refine
the interval value to refer to
Refines the interval value with the reference value. The interval is changed to the range satisfying both intervals. The interval status
(min, max, integer, etc.) are evaluated.
Positive if the value is changed, zero if it's not changed, or a negative error code.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 SND_INTERVAL_REFINE(9)
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USB_FILL_INT_URB(9) Host-Side Data Types and Macro USB_FILL_INT_URB(9)NAME
usb_fill_int_urb - macro to help initialize a interrupt urb
void usb_fill_int_urb(struct urb * urb, struct usb_device * dev, unsigned int pipe, void * transfer_buffer, int buffer_length,
usb_complete_t complete_fn, void * context, int interval);
pointer to the urb to initialize.
pointer to the struct usb_device for this urb.
the endpoint pipe
pointer to the transfer buffer
length of the transfer buffer
pointer to the usb_complete_t function
what to set the urb context to.
what to set the urb interval to, encoded like the endpoint descriptor's bInterval value.
Initializes a interrupt urb with the proper information needed to submit it to a device.
Note that High Speed and SuperSpeed interrupt endpoints use a logarithmic encoding of the endpoint interval, and express polling intervals
in microframes (eight per millisecond) rather than in frames (one per millisecond).
Wireless USB also uses the logarithmic encoding, but specifies it in units of 128us instead of 125us. For Wireless USB devices, the
interval is passed through to the host controller, rather than being translated into microframe units.
COPYRIGHT Kernel Hackers Manual 2.6. July 2010 USB_FILL_INT_URB(9)
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