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staging: comedi: amplc_pci230: use cfc_check_trigger_arg_*() helpers 

Use the new helpers in the step 3 tests of pci230_{ao,ai}_cmdtest().

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
H Hartley Sweeten 2012-11-13 17:53:08 -07:00 committed by Greg Kroah-Hartman
parent 0427c4847e
commit 670c475cf0
1 changed files with 39 additions and 81 deletions
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120
drivers/staging/comedi/drivers/amplc_pci230.c
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@ -999,14 +999,10 @@ static int pci230_ao_cmdtest(struct comedi_device *dev,
if (err) if (err)
return 2; return 2;
/* Step 3: make sure arguments are trivially compatible. /* Step 3: check if arguments are trivially valid */
* "invalid argument" returned by comedilib to user mode process
* if this fails. */ err |= cfc_check_trigger_arg_is(&cmd->start_arg, 0);
if (cmd->start_arg != 0) {
cmd->start_arg = 0;
err++;
}
#define MAX_SPEED_AO 8000 /* 8000 ns => 125 kHz */ #define MAX_SPEED_AO 8000 /* 8000 ns => 125 kHz */
#define MIN_SPEED_AO 4294967295u /* 4294967295ns = 4.29s */ #define MIN_SPEED_AO 4294967295u /* 4294967295ns = 4.29s */
/*- Comedi limit due to unsigned int cmd. Driver limit /*- Comedi limit due to unsigned int cmd. Driver limit
@ -1015,14 +1011,10 @@ static int pci230_ao_cmdtest(struct comedi_device *dev,
switch (cmd->scan_begin_src) { switch (cmd->scan_begin_src) {
case TRIG_TIMER: case TRIG_TIMER:
if (cmd->scan_begin_arg < MAX_SPEED_AO) { err |= cfc_check_trigger_arg_min(&cmd->scan_begin_arg,
cmd->scan_begin_arg = MAX_SPEED_AO; MAX_SPEED_AO);
err++; err |= cfc_check_trigger_arg_max(&cmd->scan_begin_arg,
} MIN_SPEED_AO);
if (cmd->scan_begin_arg > MIN_SPEED_AO) {
cmd->scan_begin_arg = MIN_SPEED_AO;
err++;
}
break; break;
case TRIG_EXT: case TRIG_EXT:
/* External trigger - for PCI230+ hardware version 2 onwards. */ /* External trigger - for PCI230+ hardware version 2 onwards. */
@ -1030,37 +1022,27 @@ static int pci230_ao_cmdtest(struct comedi_device *dev,
if ((cmd->scan_begin_arg & ~CR_FLAGS_MASK) != 0) { if ((cmd->scan_begin_arg & ~CR_FLAGS_MASK) != 0) {
cmd->scan_begin_arg = COMBINE(cmd->scan_begin_arg, 0, cmd->scan_begin_arg = COMBINE(cmd->scan_begin_arg, 0,
~CR_FLAGS_MASK); ~CR_FLAGS_MASK);
err++; err |= -EINVAL;
} }
/* The only flags allowed are CR_EDGE and CR_INVERT. The /* The only flags allowed are CR_EDGE and CR_INVERT. The
* CR_EDGE flag is ignored. */ * CR_EDGE flag is ignored. */
if ((cmd->scan_begin_arg if ((cmd->scan_begin_arg
& (CR_FLAGS_MASK & ~(CR_EDGE | CR_INVERT))) != 0) { & (CR_FLAGS_MASK & ~(CR_EDGE | CR_INVERT))) != 0) {
cmd->scan_begin_arg = cmd->scan_begin_arg = COMBINE(cmd->scan_begin_arg, 0,
COMBINE(cmd->scan_begin_arg, 0, CR_FLAGS_MASK &
CR_FLAGS_MASK & ~(CR_EDGE | CR_INVERT)); ~(CR_EDGE | CR_INVERT));
err++; err |= -EINVAL;
} }
break; break;
default: default:
if (cmd->scan_begin_arg != 0) { err |= cfc_check_trigger_arg_is(&cmd->scan_begin_arg, 0);
cmd->scan_begin_arg = 0;
err++;
}
break; break;
} }
if (cmd->scan_end_arg != cmd->chanlist_len) { err |= cfc_check_trigger_arg_is(&cmd->scan_end_arg, cmd->chanlist_len);
cmd->scan_end_arg = cmd->chanlist_len;
err++; if (cmd->stop_src == TRIG_NONE)
} err |= cfc_check_trigger_arg_is(&cmd->stop_arg, 0);
if (cmd->stop_src == TRIG_NONE) {
/* TRIG_NONE */
if (cmd->stop_arg != 0) {
cmd->stop_arg = 0;
err++;
}
}
if (err) if (err)
return 3; return 3;
@ -1618,14 +1600,10 @@ static int pci230_ai_cmdtest(struct comedi_device *dev,
if (err) if (err)
return 2; return 2;
/* Step 3: make sure arguments are trivially compatible. /* Step 3: check if arguments are trivially valid */
* "invalid argument" returned by comedilib to user mode process
* if this fails. */ err |= cfc_check_trigger_arg_is(&cmd->start_arg, 0);
if (cmd->start_arg != 0) {
cmd->start_arg = 0;
err++;
}
#define MAX_SPEED_AI_SE 3200 /* PCI230 SE: 3200 ns => 312.5 kHz */ #define MAX_SPEED_AI_SE 3200 /* PCI230 SE: 3200 ns => 312.5 kHz */
#define MAX_SPEED_AI_DIFF 8000 /* PCI230 DIFF: 8000 ns => 125 kHz */ #define MAX_SPEED_AI_DIFF 8000 /* PCI230 DIFF: 8000 ns => 125 kHz */
#define MAX_SPEED_AI_PLUS 4000 /* PCI230+: 4000 ns => 250 kHz */ #define MAX_SPEED_AI_PLUS 4000 /* PCI230+: 4000 ns => 250 kHz */
@ -1656,14 +1634,10 @@ static int pci230_ai_cmdtest(struct comedi_device *dev,
max_speed_ai = MAX_SPEED_AI_PLUS; max_speed_ai = MAX_SPEED_AI_PLUS;
} }
if (cmd->convert_arg < max_speed_ai) { err |= cfc_check_trigger_arg_min(&cmd->convert_arg,
cmd->convert_arg = max_speed_ai; max_speed_ai);
err++; err |= cfc_check_trigger_arg_max(&cmd->convert_arg,
} MIN_SPEED_AI);
if (cmd->convert_arg > MIN_SPEED_AI) {
cmd->convert_arg = MIN_SPEED_AI;
err++;
}
} else if (cmd->convert_src == TRIG_EXT) { } else if (cmd->convert_src == TRIG_EXT) {
/* /*
* external trigger * external trigger
@ -1678,46 +1652,33 @@ static int pci230_ai_cmdtest(struct comedi_device *dev,
if ((cmd->convert_arg & ~CR_FLAGS_MASK) != 0) { if ((cmd->convert_arg & ~CR_FLAGS_MASK) != 0) {
cmd->convert_arg = COMBINE(cmd->convert_arg, 0, cmd->convert_arg = COMBINE(cmd->convert_arg, 0,
~CR_FLAGS_MASK); ~CR_FLAGS_MASK);
err++; err |= -EINVAL;
} }
/* The only flags allowed are CR_INVERT and CR_EDGE. /* The only flags allowed are CR_INVERT and CR_EDGE.
* CR_EDGE is required. */ * CR_EDGE is required. */
if ((cmd->convert_arg & (CR_FLAGS_MASK & ~CR_INVERT)) if ((cmd->convert_arg & (CR_FLAGS_MASK & ~CR_INVERT))
!= CR_EDGE) { != CR_EDGE) {
/* Set CR_EDGE, preserve CR_INVERT. */ /* Set CR_EDGE, preserve CR_INVERT. */
cmd->convert_arg = cmd->convert_arg = COMBINE(cmd->start_arg,
COMBINE(cmd->start_arg, (CR_EDGE | 0), (CR_EDGE | 0),
CR_FLAGS_MASK & ~CR_INVERT); CR_FLAGS_MASK &
err++; ~CR_INVERT);
err |= -EINVAL;
} }
} else { } else {
/* Backwards compatibility with previous versions. */ /* Backwards compatibility with previous versions. */
/* convert_arg == 0 => trigger on -ve edge. */ /* convert_arg == 0 => trigger on -ve edge. */
/* convert_arg == 1 => trigger on +ve edge. */ /* convert_arg == 1 => trigger on +ve edge. */
if (cmd->convert_arg > 1) { err |= cfc_check_trigger_arg_max(&cmd->convert_arg, 1);
/* Default to trigger on +ve edge. */
cmd->convert_arg = 1;
err++;
}
} }
} else { } else {
if (cmd->convert_arg != 0) { err |= cfc_check_trigger_arg_is(&cmd->convert_arg, 0);
cmd->convert_arg = 0;
err++;
}
} }
if (cmd->scan_end_arg != cmd->chanlist_len) { err |= cfc_check_trigger_arg_is(&cmd->scan_end_arg, cmd->chanlist_len);
cmd->scan_end_arg = cmd->chanlist_len;
err++;
}
if (cmd->stop_src == TRIG_NONE) { if (cmd->stop_src == TRIG_NONE)
if (cmd->stop_arg != 0) { err |= cfc_check_trigger_arg_is(&cmd->stop_arg, 0);
cmd->stop_arg = 0;
err++;
}
}
if (cmd->scan_begin_src == TRIG_EXT) { if (cmd->scan_begin_src == TRIG_EXT) {
/* external "trigger" to begin each scan /* external "trigger" to begin each scan
@ -1726,24 +1687,21 @@ static int pci230_ai_cmdtest(struct comedi_device *dev,
if ((cmd->scan_begin_arg & ~CR_FLAGS_MASK) != 0) { if ((cmd->scan_begin_arg & ~CR_FLAGS_MASK) != 0) {
cmd->scan_begin_arg = COMBINE(cmd->scan_begin_arg, 0, cmd->scan_begin_arg = COMBINE(cmd->scan_begin_arg, 0,
~CR_FLAGS_MASK); ~CR_FLAGS_MASK);
err++; err |= -EINVAL;
} }
/* The only flag allowed is CR_EDGE, which is ignored. */ /* The only flag allowed is CR_EDGE, which is ignored. */
if ((cmd->scan_begin_arg & CR_FLAGS_MASK & ~CR_EDGE) != 0) { if ((cmd->scan_begin_arg & CR_FLAGS_MASK & ~CR_EDGE) != 0) {
cmd->scan_begin_arg = COMBINE(cmd->scan_begin_arg, 0, cmd->scan_begin_arg = COMBINE(cmd->scan_begin_arg, 0,
CR_FLAGS_MASK & ~CR_EDGE); CR_FLAGS_MASK & ~CR_EDGE);
err++; err |= -EINVAL;
} }
} else if (cmd->scan_begin_src == TRIG_TIMER) { } else if (cmd->scan_begin_src == TRIG_TIMER) {
/* N.B. cmd->convert_arg is also TRIG_TIMER */ /* N.B. cmd->convert_arg is also TRIG_TIMER */
if (!pci230_ai_check_scan_period(cmd)) if (!pci230_ai_check_scan_period(cmd))
err++; err |= -EINVAL;
} else { } else {
if (cmd->scan_begin_arg != 0) { err |= cfc_check_trigger_arg_is(&cmd->scan_begin_arg, 0);
cmd->scan_begin_arg = 0;
err++;
}
} }
if (err) if (err)