staging: comedi: drivers: use comedi_fc.h cmdtest helpers

[pandora-kernel.git] / drivers / staging / comedi / drivers / cb_das16_cs.c

diff --git a/drivers/staging/comedi/drivers/cb_das16_cs.c b/drivers/staging/comedi/drivers/cb_das16_cs.c
index 58d4529..6d81d8b 100644 (file)
--- a/drivers/staging/comedi/drivers/cb_das16_cs.c
+++ b/drivers/staging/comedi/drivers/cb_das16_cs.c
@@ -46,6 +46,7 @@ Status: experimental
 #include <pcmcia/cistpl.h>
 #include <pcmcia/ds.h>
 
+#include "comedi_fc.h"
 #include "8253.h"
 
 #define DAS16CS_SIZE                   18
@@ -169,47 +170,26 @@ static int das16cs_ai_cmdtest(struct comedi_device *dev,
        int err = 0;
        int tmp;
 
-       /* step 1: make sure trigger sources are trivially valid */
+       /* Step 1 : check if triggers are trivially valid */
 
-       tmp = cmd->start_src;
-       cmd->start_src &= TRIG_NOW;
-       if (!cmd->start_src || tmp != cmd->start_src)
-               err++;
-
-       tmp = cmd->scan_begin_src;
-       cmd->scan_begin_src &= TRIG_TIMER | TRIG_EXT;
-       if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src)
-               err++;
-
-       tmp = cmd->convert_src;
-       cmd->convert_src &= TRIG_TIMER | TRIG_EXT;
-       if (!cmd->convert_src || tmp != cmd->convert_src)
-               err++;
-
-       tmp = cmd->scan_end_src;
-       cmd->scan_end_src &= TRIG_COUNT;
-       if (!cmd->scan_end_src || tmp != cmd->scan_end_src)
-               err++;
-
-       tmp = cmd->stop_src;
-       cmd->stop_src &= TRIG_COUNT | TRIG_NONE;
-       if (!cmd->stop_src || tmp != cmd->stop_src)
-               err++;
+       err |= cfc_check_trigger_src(&cmd->start_src, TRIG_NOW);
+       err |= cfc_check_trigger_src(&cmd->scan_begin_src,
+                                       TRIG_TIMER | TRIG_EXT);
+       err |= cfc_check_trigger_src(&cmd->convert_src,
+                                       TRIG_TIMER | TRIG_EXT);
+       err |= cfc_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT);
+       err |= cfc_check_trigger_src(&cmd->stop_src, TRIG_COUNT | TRIG_NONE);
 
        if (err)
                return 1;
 
-       /* step 2: make sure trigger sources are unique and
-        * mutually compatible */
+       /* Step 2a : make sure trigger sources are unique */
 
-       /* note that mutual compatibility is not an issue here */
-       if (cmd->scan_begin_src != TRIG_TIMER &&
-           cmd->scan_begin_src != TRIG_EXT)
-               err++;
-       if (cmd->convert_src != TRIG_TIMER && cmd->convert_src != TRIG_EXT)
-               err++;
-       if (cmd->stop_src != TRIG_COUNT && cmd->stop_src != TRIG_NONE)
-               err++;
+       err |= cfc_check_trigger_is_unique(cmd->scan_begin_src);
+       err |= cfc_check_trigger_is_unique(cmd->convert_src);
+       err |= cfc_check_trigger_is_unique(cmd->stop_src);
+
+       /* Step 2b : and mutually compatible */
 
        if (err)
                return 2;
@@ -478,7 +458,7 @@ static int das16cs_attach(struct comedi_device *dev,
        if (ret)
                return ret;
 
-       s = dev->subdevices + 0;
+       s = &dev->subdevices[0];
        dev->read_subdev = s;
        /* analog input subdevice */
        s->type         = COMEDI_SUBD_AI;
@@ -491,7 +471,7 @@ static int das16cs_attach(struct comedi_device *dev,
        s->do_cmd       = das16cs_ai_cmd;
        s->do_cmdtest   = das16cs_ai_cmdtest;
 
-       s = dev->subdevices + 1;
+       s = &dev->subdevices[1];
        /* analog output subdevice */
        if (thisboard->n_ao_chans) {
                s->type         = COMEDI_SUBD_AO;
@@ -505,7 +485,7 @@ static int das16cs_attach(struct comedi_device *dev,
                s->type         = COMEDI_SUBD_UNUSED;
        }
 
-       s = dev->subdevices + 2;
+       s = &dev->subdevices[2];
        /* digital i/o subdevice */
        s->type         = COMEDI_SUBD_DIO;
        s->subdev_flags = SDF_READABLE | SDF_WRITABLE;