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Commit a4a25703 authored by H Hartley Sweeten's avatar H Hartley Sweeten Committed by Greg Kroah-Hartman
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staging: comedi: addi_apci_1564: 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 6b5d4328
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Showing with 17 additions and 241 deletions
drivers/staging/comedi/drivers/addi-data/hwdrv_apci1564.c
View file @ a4a25703
......@@ -258,250 +258,27 @@ static int i_APCI1564_ConfigDigitalOutput(struct comedi_device *dev,
return insn->n;
}
/*
+----------------------------------------------------------------------------+
| Function Name : int i_APCI1564_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_APCI1564_WriteDigitalOutput(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned int *data)
static int apci1564_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_Temp, ui_Temp1;
unsigned int ui_NoOfChannel;
unsigned int mask = data[0];
unsigned int bits = data[1];
ui_NoOfChannel = CR_CHAN(insn->chanspec);
if (devpriv->b_OutputMemoryStatus) {
ui_Temp =
inl(devpriv->i_IobaseAmcc + APCI1564_DIGITAL_OP +
s->state = inl(devpriv->i_IobaseAmcc + APCI1564_DIGITAL_OP +
APCI1564_DIGITAL_OP_RW);
} /* if (devpriv->b_OutputMemoryStatus ) */
else {
ui_Temp = 0;
} /* else if (devpriv->b_OutputMemoryStatus ) */
if (data[3] == 0) {
if (data[1] == 0) {
data[0] = (data[0] << ui_NoOfChannel) | ui_Temp;
outl(data[0],
devpriv->i_IobaseAmcc + APCI1564_DIGITAL_OP +
APCI1564_DIGITAL_OP_RW);
} /* 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 16:
data[0] =
(data[0] << (16 *
data[2])) | ui_Temp;
break;
case 31:
data[0] = data[0] | ui_Temp;
break;
default:
comedi_error(dev, " chan spec wrong");
return -EINVAL; /* "sorry channel spec wrong " */
} /* switch (ui_NoOfChannels) */
outl(data[0],
devpriv->i_IobaseAmcc +
APCI1564_DIGITAL_OP +
APCI1564_DIGITAL_OP_RW);
} /* 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) ^
0xffffffff;
data[0] = data[0] & ui_Temp;
outl(data[0],
devpriv->i_IobaseAmcc +
APCI1564_DIGITAL_OP +
APCI1564_DIGITAL_OP_RW);
} /* 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])) ^
0xffffffff) & 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])) ^
0xffffffff) & 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])) ^
0xffffffff) & ui_Temp;
break;
case 16:
data[0] = ~data[0] & 0xffff;
ui_Temp1 = 65535;
ui_Temp1 =
ui_Temp1 << 16 *
data[2];
ui_Temp = ui_Temp | ui_Temp1;
data[0] =
((data[0] << (16 *
data
[2])) ^
0xffffffff) & ui_Temp;
break;
case 31:
break;
default:
comedi_error(dev,
" chan spec wrong");
return -EINVAL; /* "sorry channel spec wrong " */
} /* switch(ui_NoOfChannels) */
outl(data[0],
devpriv->i_IobaseAmcc +
APCI1564_DIGITAL_OP +
APCI1564_DIGITAL_OP_RW);
} /* if (data[1]==1) */
else {
printk("\nSpecified channel not supported\n");
} /* else if (data[1]==1) */
} /* else if (data[1]==0) */
} /* if (data[3]==1); */
else {
printk("\nSpecified functionality does not exist\n");
return -EINVAL;
} /* else if (data[3]==1) */
} /* else if (data[3]==0) */
return insn->n;
}
if (mask) {
s->state &= ~mask;
s->state |= (bits & mask);
outl(s->state, devpriv->i_IobaseAmcc + APCI1564_DIGITAL_OP +
APCI1564_DIGITAL_OP_RW);
}
data[1] = s->state;
/*
+----------------------------------------------------------------------------+
| Function Name : int i_APCI1564_ReadDigitalOutput |
| (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_APCI1564_ReadDigitalOutput(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;
ui_NoOfChannel = CR_CHAN(insn->chanspec);
ui_Temp = data[0];
*data = inl(devpriv->i_IobaseAmcc + APCI1564_DIGITAL_OP +
APCI1564_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 16:
*data = (*data >> (16 * data[1])) & 65535;
break;
case 31:
break;
default:
comedi_error(dev, " chan spec wrong");
return -EINVAL; /* "sorry channel spec wrong " */
break;
} /* switch(ui_NoOfChannels) */
} /* if (ui_Temp==1) */
else {
printk("\nSpecified channel not supported \n");
} /* else if (ui_Temp==1) */
} /* else if (ui_Temp==0) */
return insn->n;
}
......
drivers/staging/comedi/drivers/addi_apci_1564.c
View file @ a4a25703
......@@ -26,8 +26,7 @@ static const struct addi_board apci1564_boardtypes[] = {
.di_config = i_APCI1564_ConfigDigitalInput,
.di_bits = apci1564_di_insn_bits,
.do_config = i_APCI1564_ConfigDigitalOutput,
.do_write = i_APCI1564_WriteDigitalOutput,
.do_bits = i_APCI1564_ReadDigitalOutput,
.do_bits = apci1564_do_insn_bits,
.do_read = i_APCI1564_ReadInterruptStatus,
.timer_config = i_APCI1564_ConfigTimerCounterWatchdog,
.timer_write = i_APCI1564_StartStopWriteTimerCounterWatchdog,
......
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