On 2/15/2012 10:20 AM, Shankarmurthy, Akshay wrote:
Hi folks, I am developing a driver for eCAP peripheral and I feel it should come under driver/staging/iio directory. Kindly go through the below eCAP brief description and let me know whether I can put the driver inside iio directory. eCAP (enhanced capture) module can be used to compute frequency and duty cycle % of the incoming pwm wave. This module includes dedicated input pin, 32bit up counter and capture registers. PWM wave whose frequency needs to be computed should befed to this dedicated pin. Counter ticks on the reference clock. eCAP latches the counter value to the capture registers depending upon the rising and falling edge of the incoming pwm wave. Values in the counter register are used to calculate the frequency and duty cycle %.
It is a new device type to us so you'll have to work out the interface. Comparison with the output stuff for DDS chips may give some help with that. Once you have a vague idea of how you want it to work, put out an RFC of the interface document for us to review. This can either happen when the driver is ready or if you want to post it before that then that is even better. Otherwise, sounds interesting and fits within the general scope of IIO as far as I am concerned. Don't think there is anywhere else in the kernel where it would fit. Some of the usecases are very similar to resolvers even if the device operates at a somewhat lower level. Looking forward to seeing your driver. Jonathan -- 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
