Thanks for the advice. So it seems everyone agrees that multiple IIO device is the way to go. What about the using a flag to indicate which data will come like the one below: Under IIO architecture, can we have another kind of ring buffer in addition to sw_ring and kfifo, such as header to indicate data type(gyro_x, gyro_y, gyro_z, accel_x, accel_y, accel_z, compass_x, compass_y, compass_z, quaternion_x, quaternion_y, quaternion_z, quaternion_c) followed by actual data. Also can we have some definition for quaternion? It is an important datum for rotation calculation. It contains 4 elements, x, y, z and a constant. Ge -----Original Message----- From: Jonathan Cameron [mailto:jic23@xxxxxxxxx] Sent: Tuesday, May 01, 2012 11:05 AM To: Lars-Peter Clausen Cc: Ge Gao; linux-iio@xxxxxxxxxxxxxxx Subject: Re: different data rate in IIO ? Lars-Peter Clausen <lars@xxxxxxxxxx> wrote: >On 05/01/2012 04:50 PM, Jonathan Cameron wrote: >> On 5/1/2012 3:15 PM, Lars-Peter Clausen wrote: >>> On 05/01/2012 04:05 PM, Lars-Peter Clausen wrote: >>> [...] >>> Ah, seems as if the refcounting infrastructure is already ready for >>> use after we have called device_initialize, so the above plan should >>> work >quite >>> well. >>> Call device_del in iio_device_unregister and device_put in >>> iio_device_free and free the struct in the release callback. >> That makes sense given it just splits the two parts of >device_unregister >> apart. >> Don't suppose you want to do the patch? > >I could write the patch, but I don't have a setup at hand right now >where I could test it, so this would have to wait until next week. I >wouldn't mind if you took care of it though :) I'll aim to do it Saturday.... nothing to test on till then. > >- Lars -- Sent from my Android phone with K-9 Mail. Please excuse my brevity. -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html