Hello, This patch adds support for continuous sampling provided by the ADC block on Vybrid by leveraging the IIO triggered buffers infrastructure. The patch has been tested on Colibri VF50 and VF61 on shawn's tree for-next branch with the patches [1] and [2] applied. The below script was used for testing. #!/bin/sh echo 0 > /sys/bus/iio/devices/iio:device0/scan_elements/in_voltage8_en echo 0 > /sys/bus/iio/devices/iio:device0/scan_elements/in_voltage9_en echo 1 > /sys/bus/iio/devices/iio:device0/scan_elements/in_temp_en echo 1 > /sys/bus/iio/devices/iio:device0/scan_elements/in_timestamp_en echo 0 > /sys/bus/iio/devices/iio_sysfs_trigger/add_trigger /home/root/generic_buffer -n 4003b000.adc -t sysfstrig0 -l 512 -c 10 echo 0 > /sys/bus/iio/devices/iio:device0/scan_elements/in_timestamp_en echo 0 > /sys/bus/iio/devices/iio:device0/scan_elements/in_temp_en echo 0 > /sys/bus/iio/devices/iio:device0/scan_elements/in_voltage8_en echo 0 > /sys/bus/iio/devices/iio:device0/scan_elements/in_voltage9_en Feedback and comments are most welcome. Changes since v2: 1. Fix the wrong buffer size for statically allocated buffer 2. Drop the use of .address field from the iio_chan_spec 3. Use iio_buffer_enabled call inside the lock 4. Drop wrapper function around iio_trigered_* function calls 5. Drop Kconfig select of sysfs trigger 6. Drop Kconfig select IIO_TRIGGER as it is already selected by IIO_TRIGGERED_BUFFER Changes since v1: 1. Use a fixed size buffer instead of kmalloc allocated during update scan mode 2. Remove a write to read only register ADC_HS (COCO bit) Version 2 patch can be found here http://www.gossamer-threads.com/lists/linux/kernel/2235178 Version 1 patch can be found here http://www.spinics.net/lists/linux-iio/msg20053.html [1]. https://lkml.org/lkml/2015/5/27/350 [2]. https://lkml.org/lkml/2015/7/14/395 Thanks & Regards, Sanchayan Maity. Sanchayan Maity (1): iio: adc: vf610: Add IIO buffer support for Vybrid ADC drivers/iio/adc/Kconfig | 2 + drivers/iio/adc/vf610_adc.c | 102 +++++++++++++++++++++++++++++++++++++++++--- 2 files changed, 97 insertions(+), 7 deletions(-) -- 2.5.0 -- 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
