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? Regards, Priyaranjan -- 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
