Messages in this thread | | | Date | Sun, 14 Jul 2013 10:12:26 +0200 | From | Lars-Peter Clausen <> | Subject | Re: [PATCH] misc: add driver for Renesas R-Car Gyro-ADC/speed-pulse interfaces |
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On 07/14/2013 12:26 AM, Sergei Shtylyov wrote: > Hello. > > On 07/13/2013 11:58 AM, Arnd Bergmann wrote: > >>>> And are you sure you want to control this through sysfs? There's no >>>> other better user/kernel apis for it? > >>> I found none, besides ioctl(), as the device driven is rather >>> unique. But I thought that sysfs is "ioctl() today", so I went with it... > >> It does sound like it would fit better into IIO than just a misc driver, >> even if it's the only hardware of its kind. > > I got somewhat familiarized myself with drivers/iio/ infrastructure and I > have found a place only the for ADC device in which the customer currently > has no interest. > The other trouble is that I'll have to backport this driver to 3.4 which > doesn't contain the IIO infrastructure at all. :-(
It has, it's just still in staging in 3.4. But the API (except for minor modifications) and more importantly the ABI are the same.
There is a angular velocity channel type in IIO. maybe that could be used to report the Speed-Pulse-ADC values.
- Lars
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