On Fri, Feb 15, 2013 at 04:48:33PM +0530, Priyaranjan Das wrote: > Hi Greg, > > On Thu, Jan 31, 2013 at 11:09 AM, Priyaranjan Das > <priyaranjan456789@xxxxxxxxx> wrote: > > Hi Greg, > > > > On Tue, Jan 29, 2013 at 7:03 PM, Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> wrote: > >> On Mon, Jan 28, 2013 at 03:25:08PM +0530, Priyaranjan Das wrote: > >>> Hi Greg, > >>> > >>> On Tue, Jan 22, 2013 at 10:06 PM, Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> wrote: > >>> > On Tue, Jan 22, 2013 at 03:02:32PM +0530, Priyaranjan Das wrote: > >>> >> Hi All, > >>> >> > >>> >> I am working on MSR(Magnetic Stripe Reader) for a product . I wish to > >>> >> know whether any MSR( Magnetic Stripe/card Reader) driver is available > >>> >> in the current source or not. I need this for reference. Could anyone > >>> >> please help me? > >>> > > >>> > Most of these types of devices that I have worked with always show up as > >>> > a keyboard device (ps/2 pass-through or a USB hid device.) What type of > >>> > interface does your device present to the operating system? > >>> > > >>> > >>> The MSR will be a part of a SoC. It is a memory mapped device hence > >>> there is no interface like USB. > >> > >> Ok, that's different. But how will your driver want to communicate the > >> reader data to userspace? That will probably determine where you want > >> to put it. > >> > >> I would recommend making it an input device and sending keystrokes that > >> you read from the card, so you can properly integrate into userspace > >> applications that are used to using a card reader. > >> > >>> MSR IP contains an ADC which the driver will read and interpret the > >>> data. I am planning to write a Driver for the same. Will this driver > >>> fall under drivers/mfd/* ? > >> > >> As per the above, I would think drivers/input/ wouldn't you? > >> > >> Hope this helps, > >> > > > > Thanks for your help!. > > > > Yes, you are right, it should be under drivers/input. > > I am trying to prepare the design right now. > > > > > > The MSR IP can be also be used either as a general purpose ADC or in > Magnetic stripe card reader mode.The IP supports both the modes and > provides FIFO for storing ADC data. > > I also got to know about IIO subsystem where ADC drivers are > implemented. Our use-case will be to use either Magnetic Stripe reader > mode or general purpose ADC mode in a given configuration. Can I use > IIO subsystem for the Magnetic Stripe driver? The IIO developers would know best about this, not I, sorry. greg k-h -- 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
