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Commit 25ef8072 authored by Simon Guo's avatar Simon Guo Committed by Greg Kroah-Hartman
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STAGING: Fix pcl818.c coding style issue: code indent should use tabs where possible 

Correct one coding style problem(detected by checkpatch.pl) in pcl818.c.
- code indent should use tabs where possible
It is fixed by reformatting the comment block to usual comment style.

And with the reformatting, following coding style problem is also fixed:
- please, no space before tabs
Signed-off-by: default avatarSimon Guo <wei.guo.simon@gmail.com>
Reviewed-by: default avatarIan Abbott <abbotti@mev.co.uk>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent d0e9ed58
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Showing with 91 additions and 98 deletions
drivers/staging/comedi/drivers/pcl818.c
View file @ 25ef8072
/*
comedi/drivers/pcl818.c
Author: Michal Dobes <dobes@tesnet.cz>
hardware driver for Advantech cards:
card: PCL-818L, PCL-818H, PCL-818HD, PCL-818HG, PCL-818, PCL-718
driver: pcl818l, pcl818h, pcl818hd, pcl818hg, pcl818, pcl718
*/
/*
Driver: pcl818
Description: Advantech PCL-818 cards, PCL-718
Author: Michal Dobes <dobes@tesnet.cz>
Devices: [Advantech] PCL-818L (pcl818l), PCL-818H (pcl818h),
PCL-818HD (pcl818hd), PCL-818HG (pcl818hg), PCL-818 (pcl818),
PCL-718 (pcl718)
Status: works
All cards have 16 SE/8 DIFF ADCs, one or two DACs, 16 DI and 16 DO.
Differences are only at maximal sample speed, range list and FIFO
support.
The driver support AI mode 0, 1, 3 other subdevices (AO, DI, DO) support
only mode 0. If DMA/FIFO/INT are disabled then AI support only mode 0.
PCL-818HD and PCL-818HG support 1kword FIFO. Driver support this FIFO
but this code is untested.
A word or two about DMA. Driver support DMA operations at two ways:
1) DMA uses two buffers and after one is filled then is generated
INT and DMA restart with second buffer. With this mode I'm unable run
more that 80Ksamples/secs without data dropouts on K6/233.
2) DMA uses one buffer and run in autoinit mode and the data are
from DMA buffer moved on the fly with 2kHz interrupts from RTC.
This mode is used if the interrupt 8 is available for allocation.
If not, then first DMA mode is used. With this I can run at
full speed one card (100ksamples/secs) or two cards with
60ksamples/secs each (more is problem on account of ISA limitations).
To use this mode you must have compiled kernel with disabled
"Enhanced Real Time Clock Support".
Maybe you can have problems if you use xntpd or similar.
If you've data dropouts with DMA mode 2 then:
a) disable IDE DMA
b) switch text mode console to fb.
Options for PCL-818L:
[0] - IO Base
[1] - IRQ (0=disable, 2, 3, 4, 5, 6, 7)
[2] - DMA (0=disable, 1, 3)
[3] - 0, 10=10MHz clock for 8254
1= 1MHz clock for 8254
[4] - 0, 5=A/D input -5V.. +5V
1, 10=A/D input -10V..+10V
[5] - 0, 5=D/A output 0-5V (internal reference -5V)
1, 10=D/A output 0-10V (internal reference -10V)
2 =D/A output unknown (external reference)
Options for PCL-818, PCL-818H:
[0] - IO Base
[1] - IRQ (0=disable, 2, 3, 4, 5, 6, 7)
[2] - DMA (0=disable, 1, 3)
[3] - 0, 10=10MHz clock for 8254
1= 1MHz clock for 8254
[4] - 0, 5=D/A output 0-5V (internal reference -5V)
1, 10=D/A output 0-10V (internal reference -10V)
2 =D/A output unknown (external reference)
Options for PCL-818HD, PCL-818HG:
[0] - IO Base
[1] - IRQ (0=disable, 2, 3, 4, 5, 6, 7)
[2] - DMA/FIFO (-1=use FIFO, 0=disable both FIFO and DMA,
1=use DMA ch 1, 3=use DMA ch 3)
[3] - 0, 10=10MHz clock for 8254
1= 1MHz clock for 8254
[4] - 0, 5=D/A output 0-5V (internal reference -5V)
1, 10=D/A output 0-10V (internal reference -10V)
2 =D/A output unknown (external reference)
Options for PCL-718:
[0] - IO Base
[1] - IRQ (0=disable, 2, 3, 4, 5, 6, 7)
[2] - DMA (0=disable, 1, 3)
[3] - 0, 10=10MHz clock for 8254
1= 1MHz clock for 8254
[4] - 0=A/D Range is +/-10V
1= +/-5V
2= +/-2.5V
3= +/-1V
4= +/-0.5V
5= user defined bipolar
6= 0-10V
7= 0-5V
8= 0-2V
9= 0-1V
10= user defined unipolar
[5] - 0, 5=D/A outputs 0-5V (internal reference -5V)
1, 10=D/A outputs 0-10V (internal reference -10V)
2=D/A outputs unknown (external reference)
[6] - 0, 60=max 60kHz A/D sampling
1,100=max 100kHz A/D sampling (PCL-718 with Option 001 installed)
*/
* comedi/drivers/pcl818.c
*
* Driver: pcl818
* Description: Advantech PCL-818 cards, PCL-718
* Author: Michal Dobes <dobes@tesnet.cz>
* Devices: [Advantech] PCL-818L (pcl818l), PCL-818H (pcl818h),
* PCL-818HD (pcl818hd), PCL-818HG (pcl818hg), PCL-818 (pcl818),
* PCL-718 (pcl718)
* Status: works
*
* All cards have 16 SE/8 DIFF ADCs, one or two DACs, 16 DI and 16 DO.
* Differences are only at maximal sample speed, range list and FIFO
* support.
* The driver support AI mode 0, 1, 3 other subdevices (AO, DI, DO) support
* only mode 0. If DMA/FIFO/INT are disabled then AI support only mode 0.
* PCL-818HD and PCL-818HG support 1kword FIFO. Driver support this FIFO
* but this code is untested.
* A word or two about DMA. Driver support DMA operations at two ways:
* 1) DMA uses two buffers and after one is filled then is generated
* INT and DMA restart with second buffer. With this mode I'm unable run
* more that 80Ksamples/secs without data dropouts on K6/233.
* 2) DMA uses one buffer and run in autoinit mode and the data are
* from DMA buffer moved on the fly with 2kHz interrupts from RTC.
* This mode is used if the interrupt 8 is available for allocation.
* If not, then first DMA mode is used. With this I can run at
* full speed one card (100ksamples/secs) or two cards with
* 60ksamples/secs each (more is problem on account of ISA limitations).
* To use this mode you must have compiled kernel with disabled
* "Enhanced Real Time Clock Support".
* Maybe you can have problems if you use xntpd or similar.
* If you've data dropouts with DMA mode 2 then:
* a) disable IDE DMA
* b) switch text mode console to fb.
*
* Options for PCL-818L:
* [0] - IO Base
* [1] - IRQ (0=disable, 2, 3, 4, 5, 6, 7)
* [2] - DMA (0=disable, 1, 3)
* [3] - 0, 10=10MHz clock for 8254
* 1= 1MHz clock for 8254
* [4] - 0, 5=A/D input -5V.. +5V
* 1, 10=A/D input -10V..+10V
* [5] - 0, 5=D/A output 0-5V (internal reference -5V)
* 1, 10=D/A output 0-10V (internal reference -10V)
* 2 =D/A output unknown (external reference)
*
* Options for PCL-818, PCL-818H:
* [0] - IO Base
* [1] - IRQ (0=disable, 2, 3, 4, 5, 6, 7)
* [2] - DMA (0=disable, 1, 3)
* [3] - 0, 10=10MHz clock for 8254
* 1= 1MHz clock for 8254
* [4] - 0, 5=D/A output 0-5V (internal reference -5V)
* 1, 10=D/A output 0-10V (internal reference -10V)
* 2 =D/A output unknown (external reference)
*
* Options for PCL-818HD, PCL-818HG:
* [0] - IO Base
* [1] - IRQ (0=disable, 2, 3, 4, 5, 6, 7)
* [2] - DMA/FIFO (-1=use FIFO, 0=disable both FIFO and DMA,
* 1=use DMA ch 1, 3=use DMA ch 3)
* [3] - 0, 10=10MHz clock for 8254
* 1= 1MHz clock for 8254
* [4] - 0, 5=D/A output 0-5V (internal reference -5V)
* 1, 10=D/A output 0-10V (internal reference -10V)
* 2 =D/A output unknown (external reference)
*
* Options for PCL-718:
* [0] - IO Base
* [1] - IRQ (0=disable, 2, 3, 4, 5, 6, 7)
* [2] - DMA (0=disable, 1, 3)
* [3] - 0, 10=10MHz clock for 8254
* 1= 1MHz clock for 8254
* [4] - 0=A/D Range is +/-10V
* 1= +/-5V
* 2= +/-2.5V
* 3= +/-1V
* 4= +/-0.5V
* 5= user defined bipolar
* 6= 0-10V
* 7= 0-5V
* 8= 0-2V
* 9= 0-1V
* 10= user defined unipolar
* [5] - 0, 5=D/A outputs 0-5V (internal reference -5V)
* 1, 10=D/A outputs 0-10V (internal reference -10V)
* 2=D/A outputs unknown (external reference)
* [6] - 0, 60=max 60kHz A/D sampling
* 1,100=max 100kHz A/D sampling (PCL-718 with Option 001 installed)
*
*/
#include <linux/module.h>
#include <linux/gfp.h>
......
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