staging: comedi: addi_apci_3501: 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 output channel or all the channels and the 'insn_bits' function to read the state of either a single channel or all the channels. 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: 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
Greg Kroah-Hartman
parent
272b6b04e7
commit
141dcc33c0
2 changed files with 14 additions and 133 deletions
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@ -96,143 +96,25 @@ static int apci3501_di_insn_bits(struct comedi_device *dev,
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return insn->n;
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}
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/*
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+----------------------------------------------------------------------------+
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| Function Name : int i_APCI3501_WriteDigitalOutput |
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| (struct comedi_device *dev,struct comedi_subdevice *s, |
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| struct comedi_insn *insn,unsigned int *data) |
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+----------------------------------------------------------------------------+
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| Task : writes To the digital Output Subdevice |
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+----------------------------------------------------------------------------+
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| Input Parameters : struct comedi_device *dev : Driver handle |
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| struct comedi_subdevice *s : Subdevice Pointer |
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| struct comedi_insn *insn : Insn Structure Pointer |
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| unsigned int *data : Data Pointer contains |
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| configuration parameters as below |
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| |
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+----------------------------------------------------------------------------+
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| Output Parameters : -- |
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+----------------------------------------------------------------------------+
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| Return Value : TRUE : No error occur |
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| : FALSE : Error occur. Return the error |
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| |
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+----------------------------------------------------------------------------+
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*/
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static int i_APCI3501_WriteDigitalOutput(struct comedi_device *dev,
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struct comedi_subdevice *s,
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struct comedi_insn *insn,
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unsigned int *data)
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static int apci3501_do_insn_bits(struct comedi_device *dev,
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struct comedi_subdevice *s,
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struct comedi_insn *insn,
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unsigned int *data)
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{
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struct addi_private *devpriv = dev->private;
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unsigned int ui_Temp, ui_Temp1;
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unsigned int ui_NoOfChannel = CR_CHAN(insn->chanspec); /* get the channel */
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unsigned int mask = data[0];
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unsigned int bits = data[1];
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if (devpriv->b_OutputMemoryStatus) {
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ui_Temp = inl(devpriv->iobase + APCI3501_DIGITAL_OP);
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} /* if(devpriv->b_OutputMemoryStatus ) */
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else {
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ui_Temp = 0;
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} /* if(devpriv->b_OutputMemoryStatus ) */
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if (data[3] == 0) {
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if (data[1] == 0) {
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data[0] = (data[0] << ui_NoOfChannel) | ui_Temp;
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outl(data[0], devpriv->iobase + APCI3501_DIGITAL_OP);
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} /* if(data[1]==0) */
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else {
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if (data[1] == 1) {
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data[0] = (data[0] << (2 * data[2])) | ui_Temp;
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outl(data[0],
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devpriv->iobase + APCI3501_DIGITAL_OP);
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} /* if(data[1]==1) */
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else {
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printk("\nSpecified channel not supported\n");
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} /* else if(data[1]==1) */
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} /* elseif(data[1]==0) */
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} /* if(data[3]==0) */
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else {
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if (data[3] == 1) {
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if (data[1] == 0) {
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data[0] = ~data[0] & 0x1;
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ui_Temp1 = 1;
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ui_Temp1 = ui_Temp1 << ui_NoOfChannel;
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ui_Temp = ui_Temp | ui_Temp1;
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data[0] =
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(data[0] << ui_NoOfChannel) ^
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0xffffffff;
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data[0] = data[0] & ui_Temp;
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outl(data[0],
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devpriv->iobase + APCI3501_DIGITAL_OP);
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} /* if(data[1]==0) */
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else {
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if (data[1] == 1) {
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data[0] = ~data[0] & 0x3;
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ui_Temp1 = 3;
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ui_Temp1 = ui_Temp1 << 2 * data[2];
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ui_Temp = ui_Temp | ui_Temp1;
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data[0] =
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((data[0] << (2 *
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data[2])) ^
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0xffffffff) & ui_Temp;
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outl(data[0],
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devpriv->iobase +
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APCI3501_DIGITAL_OP);
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} /* if(data[1]==1) */
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else {
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printk("\nSpecified channel not supported\n");
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} /* else if(data[1]==1) */
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} /* elseif(data[1]==0) */
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} /* if(data[3]==1); */
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else {
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printk("\nSpecified functionality does not exist\n");
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return -EINVAL;
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} /* if else data[3]==1) */
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} /* if else data[3]==0) */
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return insn->n;
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}
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s->state = inl(devpriv->iobase + APCI3501_DIGITAL_OP);
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if (mask) {
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s->state &= ~mask;
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s->state |= (bits & mask);
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/*
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+----------------------------------------------------------------------------+
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| Function Name : int i_APCI3501_ReadDigitalOutput |
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| (struct comedi_device *dev,struct comedi_subdevice *s, |
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| struct comedi_insn *insn,unsigned int *data) |
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+----------------------------------------------------------------------------+
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| Task : Read value of the selected channel or port |
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+----------------------------------------------------------------------------+
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| Input Parameters : struct comedi_device *dev : Driver handle |
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| unsigned int ui_NoOfChannels : No Of Channels To read |
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| unsigned int *data : Data Pointer to read status |
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+----------------------------------------------------------------------------+
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| Output Parameters : -- |
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+----------------------------------------------------------------------------+
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| Return Value : TRUE : No error occur |
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| : FALSE : Error occur. Return the error |
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| |
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+----------------------------------------------------------------------------+
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*/
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static int i_APCI3501_ReadDigitalOutput(struct comedi_device *dev,
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struct comedi_subdevice *s,
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struct comedi_insn *insn,
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unsigned int *data)
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{
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struct addi_private *devpriv = dev->private;
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unsigned int ui_Temp;
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unsigned int ui_NoOfChannel;
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outl(s->state, devpriv->iobase + APCI3501_DIGITAL_OP);
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}
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ui_NoOfChannel = CR_CHAN(insn->chanspec);
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ui_Temp = data[0];
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*data = inl(devpriv->iobase + APCI3501_DIGITAL_OP);
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if (ui_Temp == 0) {
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*data = (*data >> ui_NoOfChannel) & 0x1;
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} /* if (ui_Temp==0) */
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else {
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if (ui_Temp == 1) {
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*data = *data & 0x3;
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data[1] = s->state;
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} /* if (ui_Temp==1) */
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else {
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printk("\nSpecified channel not supported \n");
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} /* else if (ui_Temp==1) */
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} /* else if (ui_Temp==0) */
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return insn->n;
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}
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@ -28,8 +28,7 @@ static const struct addi_board apci3501_boardtypes[] = {
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.ao_config = i_APCI3501_ConfigAnalogOutput,
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.ao_write = i_APCI3501_WriteAnalogOutput,
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.di_bits = apci3501_di_insn_bits,
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.do_write = i_APCI3501_WriteDigitalOutput,
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.do_bits = i_APCI3501_ReadDigitalOutput,
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.do_bits = apci3501_do_insn_bits,
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.timer_config = i_APCI3501_ConfigTimerCounterWatchdog,
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.timer_write = i_APCI3501_StartStopWriteTimerCounterWatchdog,
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.timer_read = i_APCI3501_ReadTimerCounterWatchdog,
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