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staging: comedi: ni_usb6501: update comments 

Signed-off-by: Luca Ellero <luca.ellero@brickedbrain.com>
Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Luca Ellero 2014-09-19 13:50:35 +02:00 committed by Greg Kroah-Hartman
parent aa66cd164b
commit ddf9b6a4a0
1 changed files with 27 additions and 4 deletions
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31
drivers/staging/comedi/drivers/ni_usb6501.c
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@ -21,10 +21,9 @@
* Description: National Instruments USB-6501 module
* Devices: [National Instruments] USB-6501 (ni_usb6501)
* Author: Luca Ellero <luca.ellero@brickedbrain.com>
* Updated: 5 Aug 2014
* Updated: 8 Sep 2014
* Status: works
*
* This driver works, but counter device is not implemented yet.
*
* Configuration Options:
* none
@ -38,7 +37,7 @@
* - response (in)
*
* Every packet is at least 12 bytes long, here is the meaning of
* every field (all values are hex):
* every field (all values are hex):
*
* byte 0 is always 00
* byte 1 is always 01
@ -55,11 +54,12 @@
* byte 10 is always 00
* byte 11 is 00 (request) or 02 (response)
*
* PORT PACKETS
*
* CMD: 0xE READ_PORT
* REQ: 00 01 00 10 00 0C 01 0E 02 10 00 00 00 03 <PORT> 00
* RES: 00 01 00 10 00 0C 01 00 00 00 00 02 00 03 <BMAP> 00
*
* CMD: 0xF WRITE_PORT
* REQ: 00 01 00 14 00 10 01 0F 02 10 00 00 00 03 <PORT> 00 03 <BMAP> 00 00
* RES: 00 01 00 0C 00 08 01 00 00 00 00 02
@ -68,6 +68,29 @@
* REQ: 00 01 00 18 00 14 01 12 02 10 00 00
* 00 05 <PORT 0> <PORT 1> <PORT 2> 00 05 00 00 00 00 00
* RES: 00 01 00 0C 00 08 01 00 00 00 00 02
*
* COUNTER PACKETS
*
* CMD 0x9: START_COUNTER
* REQ: 00 01 00 0C 00 08 01 09 02 20 00 00
* RES: 00 01 00 0C 00 08 01 00 00 00 00 02
*
* CMD 0xC: STOP_COUNTER
* REQ: 00 01 00 0C 00 08 01 0C 02 20 00 00
* RES: 00 01 00 0C 00 08 01 00 00 00 00 02
*
* CMD 0xE: READ_COUNTER
* REQ: 00 01 00 0C 00 08 01 0E 02 20 00 00
* RES: 00 01 00 10 00 0C 01 00 00 00 00 02 <u32 counter value, Big Endian>
*
* CMD 0xF: WRITE_COUNTER
* REQ: 00 01 00 10 00 0C 01 0F 02 20 00 00 <u32 counter value, Big Endian>
* RES: 00 01 00 0C 00 08 01 00 00 00 00 02
*
*
* Please visit http://www.brickedbrain.com if you need
* additional information or have any questions.
*
*/
#include <linux/kernel.h>