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Commit 1bf448e2 authored by H Hartley Sweeten's avatar H Hartley Sweeten Committed by Greg Kroah-Hartman
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staging: comedi: addi_apci_2016: fix digital output 'insn_bits' function 

This driver does not follow the comedi API. The digital output 'insn_bits'
function is passed a mask value in data[0] indicating which output bits in
data[1] are changing. The function is then supposed to update the outputs
accordingly and then return the current state of the outputs in data[1].

Currently this driver uses the 'insn_write' function to update either a
single or all the output channels. And it uses the 'insn_bits' function
to read either a single or all the output channel states.

Fix the 'insn_bits' function so it works like the comedi core expects. The
core can then use the function to emulate the 'insn_read' and 'insn_write'
functions for individual channels.
Signed-off-by: default avatarH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 06bd743f
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Showing with 15 additions and 227 deletions
drivers/staging/comedi/drivers/addi-data/hwdrv_apci2016.c
View file @ 1bf448e2
......@@ -106,236 +106,25 @@ static int i_APCI2016_ConfigDigitalOutput(struct comedi_device *dev,
return insn->n;
}
/*
+----------------------------------------------------------------------------+
| Function Name : int i_APCI2016_WriteDigitalOutput |
| (struct comedi_device *dev,struct comedi_subdevice *s, |
| struct comedi_insn *insn,unsigned int *data) |
+----------------------------------------------------------------------------+
| Task : Writes port value To the selected port |
+----------------------------------------------------------------------------+
| Input Parameters : struct comedi_device *dev : Driver handle |
| unsigned int ui_NoOfChannels : No Of Channels To Write |
| unsigned int *data : Data Pointer to read status |
+----------------------------------------------------------------------------+
| Output Parameters : -- |
+----------------------------------------------------------------------------+
| Return Value : TRUE : No error occur |
| : FALSE : Error occur. Return the error |
| |
+----------------------------------------------------------------------------+
*/
static int i_APCI2016_WriteDigitalOutput(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned int *data)
static int apci2016_do_insn_bits(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned int *data)
{
struct addi_private *devpriv = dev->private;
unsigned int ui_NoOfChannel;
unsigned int ui_Temp, ui_Temp1;
unsigned int mask = data[0];
unsigned int bits = data[1];
ui_NoOfChannel = CR_CHAN(insn->chanspec);
if (ui_NoOfChannel > 15) {
comedi_error(dev,
"Invalid Channel Numbers !!!, Channel Numbers must be between 0 and 15\n");
return -EINVAL;
} /* if ((ui_NoOfChannel<0) || (ui_NoOfChannel>15)) */
if (devpriv->b_OutputMemoryStatus) {
ui_Temp = inw(devpriv->iobase + APCI2016_DIGITAL_OP);
} /* if (devpriv->b_OutputMemoryStatus ) */
else {
ui_Temp = 0;
} /* else if (devpriv->b_OutputMemoryStatus ) */
if ((data[1] != 0) && (data[1] != 1)) {
comedi_error(dev,
"Invalid Data[1] value !!!, Data[1] should be 0 or 1\n");
return -EINVAL;
} /* if ((data[1]!=0) && (data[1]!=1)) */
if (data[3] == 0) {
if (data[1] == 0) {
data[0] = (data[0] << ui_NoOfChannel) | ui_Temp;
outw(data[0], devpriv->iobase + APCI2016_DIGITAL_OP);
} /* if (data[1]==0) */
else {
if (data[1] == 1) {
switch (ui_NoOfChannel) {
case 2:
data[0] =
(data[0] << (2 *
data[2])) | ui_Temp;
break;
case 4:
data[0] =
(data[0] << (4 *
data[2])) | ui_Temp;
break;
case 8:
data[0] =
(data[0] << (8 *
data[2])) | ui_Temp;
break;
case 15:
data[0] = data[0] | ui_Temp;
break;
default:
comedi_error(dev, " chan spec wrong");
return -EINVAL; /* "sorry channel spec wrong " */
} /* switch(ui_NoOfChannels) */
outw(data[0],
devpriv->iobase + APCI2016_DIGITAL_OP);
} /* if (data[1]==1) */
else {
printk("\nSpecified channel not supported\n");
} /* else if (data[1]==1) */
} /* else if (data[1]==0) */
} /* if (data[3]==0) */
else {
if (data[3] == 1) {
if (data[1] == 0) {
data[0] = ~data[0] & 0x1;
ui_Temp1 = 1;
ui_Temp1 = ui_Temp1 << ui_NoOfChannel;
ui_Temp = ui_Temp | ui_Temp1;
data[0] = (data[0] << ui_NoOfChannel) ^ 0xffff;
data[0] = data[0] & ui_Temp;
outw(data[0],
devpriv->iobase + APCI2016_DIGITAL_OP);
} /* if (data[1]==0) */
else {
if (data[1] == 1) {
switch (ui_NoOfChannel) {
case 2:
data[0] = ~data[0] & 0x3;
ui_Temp1 = 3;
ui_Temp1 =
ui_Temp1 << 2 * data[2];
ui_Temp = ui_Temp | ui_Temp1;
data[0] =
((data[0] << (2 *
data
[2])) ^
0xffff) & ui_Temp;
break;
case 4:
data[0] = ~data[0] & 0xf;
ui_Temp1 = 15;
ui_Temp1 =
ui_Temp1 << 4 * data[2];
ui_Temp = ui_Temp | ui_Temp1;
data[0] =
((data[0] << (4 *
data
[2])) ^
0xffff) & ui_Temp;
break;
case 8:
data[0] = ~data[0] & 0xff;
ui_Temp1 = 255;
ui_Temp1 =
ui_Temp1 << 8 * data[2];
ui_Temp = ui_Temp | ui_Temp1;
data[0] =
((data[0] << (8 *
data
[2])) ^
0xffff) & ui_Temp;
break;
case 15:
break;
default:
comedi_error(dev,
" chan spec wrong");
return -EINVAL; /* "sorry channel spec wrong " */
} /* switch(ui_NoOfChannels) */
outw(data[0],
devpriv->iobase +
APCI2016_DIGITAL_OP);
} /* if(data[1]==1) */
else {
printk("\nSpecified channel not supported\n");
} /* else if(data[1]==1) */
} /* elseif(data[1]==0) */
} /* if(data[3]==1); */
else {
printk("\nSpecified functionality does not exist\n");
return -EINVAL;
} /* if else data[3]==1) */
} /* if else data[3]==0) */
return insn->n;
}
s->state = inw(devpriv->iobase + APCI2016_DIGITAL_OP_RW);
if (mask) {
s->state &= ~mask;
s->state |= (bits & mask);
/*
+----------------------------------------------------------------------------+
| Function Name : int i_APCI2016_BitsDigitalOutput |
| (struct comedi_device *dev,struct comedi_subdevice *s, |
| struct comedi_insn *insn,unsigned int *data) |
+----------------------------------------------------------------------------+
| Task : Read value of the selected channel or port |
+----------------------------------------------------------------------------+
| Input Parameters : struct comedi_device *dev : Driver handle |
| unsigned int ui_NoOfChannels : No Of Channels To read |
| unsigned int *data : Data Pointer to read status |
+----------------------------------------------------------------------------+
| Output Parameters : -- |
+----------------------------------------------------------------------------+
| Return Value : TRUE : No error occur |
| : FALSE : Error occur. Return the error |
| |
+----------------------------------------------------------------------------+
*/
static int i_APCI2016_BitsDigitalOutput(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned int *data)
{
struct addi_private *devpriv = dev->private;
unsigned int ui_Temp;
unsigned int ui_NoOfChannel;
outw(s->state, devpriv->iobase + APCI2016_DIGITAL_OP);
}
data[1] = s->state;
ui_NoOfChannel = CR_CHAN(insn->chanspec);
if (ui_NoOfChannel > 15) {
comedi_error(dev,
"Invalid Channel Numbers !!!, Channel Numbers must be between 0 and 15\n");
return -EINVAL;
} /* if ((ui_NoOfChannel<0) || (ui_NoOfChannel>15)) */
if ((data[0] != 0) && (data[0] != 1)) {
comedi_error(dev,
"Invalid Data[0] value !!!, Data[0] should be 0 or 1\n");
return -EINVAL;
} /* if ((data[0]!=0) && (data[0]!=1)) */
ui_Temp = data[0];
*data = inw(devpriv->iobase + APCI2016_DIGITAL_OP_RW);
if (ui_Temp == 0) {
*data = (*data >> ui_NoOfChannel) & 0x1;
} /* if (ui_Temp==0) */
else {
if (ui_Temp == 1) {
switch (ui_NoOfChannel) {
case 2:
*data = (*data >> (2 * data[1])) & 3;
break;
case 4:
*data = (*data >> (4 * data[1])) & 15;
break;
case 8:
*data = (*data >> (8 * data[1])) & 255;
break;
case 15:
break;
default:
comedi_error(dev, " chan spec wrong");
return -EINVAL; /* "sorry channel spec wrong " */
} /* switch(ui_NoOfChannel) */
} /* if (ui_Temp==1) */
else {
printk("\nSpecified channel not supported \n");
} /* else if (ui_Temp==1) */
} /* if (ui_Temp==0) */
return insn->n;
}
......
drivers/staging/comedi/drivers/addi_apci_2016.c
View file @ 1bf448e2
......@@ -22,8 +22,7 @@ static const struct addi_board apci2016_boardtypes[] = {
.i_Timer = 1,
.reset = i_APCI2016_Reset,
.do_config = i_APCI2016_ConfigDigitalOutput,
.do_write = i_APCI2016_WriteDigitalOutput,
.do_bits = i_APCI2016_BitsDigitalOutput,
.do_bits = apci2016_do_insn_bits,
.timer_config = i_APCI2016_ConfigWatchdog,
.timer_write = i_APCI2016_StartStopWriteWatchdog,
.timer_read = i_APCI2016_ReadWatchdog,
......
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