staging: comedi: addi_apci_3501: cleanup the digital output subdevice

The board supported by this driver has 2 digital outputs. Remove the
conditional and always init the subdevice.

Also, move the subdevice insn_bits function pointer as well as the
n_chan out of the boardinfo and use them to initialize the subdevice
directly.

Since devpriv->s_EeParameters for the digital output subdevice are no
longer being used, remove initialization of them also.

Copy the apci3501_do_insn_bits() function from hwrdv_apci3501.c into
the main driver file.

Fix the subdev_flags for the subdevice. The only required flag is
SDF_WRITEABLE. The SDF_GROUND and SDF_COMMON flags only have meaning
for analog subdevices and the SDF_READABLE flag is not required.

Fix the maxdata for the subdevice. Digital outputs can only be 1 or 0.

Remove the len_chanlist initialization, it only has meaning for subdevices
that support commands.

Remove the io_bits initialization, it only has meaning for digital i/o
subdevices that have configurable outputs.

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>

diff --git a/drivers/staging/comedi/drivers/addi-data/hwdrv_apci3501.c b/drivers/staging/comedi/drivers/addi-data/hwdrv_apci3501.c
index 7a18ce7..c7abe85 100644 (file)
--- a/drivers/staging/comedi/drivers/addi-data/hwdrv_apci3501.c
+++ b/drivers/staging/comedi/drivers/addi-data/hwdrv_apci3501.c
@@ -96,28 +96,6 @@ static int apci3501_di_insn_bits(struct comedi_device *dev,
        return insn->n;
 }
 
-static int apci3501_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 mask = data[0];
-       unsigned int bits = data[1];
-
-       s->state = inl(devpriv->iobase + APCI3501_DIGITAL_OP);
-       if (mask) {
-               s->state &= ~mask;
-               s->state |= (bits & mask);
-
-               outl(s->state, devpriv->iobase + APCI3501_DIGITAL_OP);
-       }
-
-       data[1] = s->state;
-
-       return insn->n;
-}
-
 /*
 +----------------------------------------------------------------------------+
 | Function   Name   : int i_APCI3501_ConfigAnalogOutput                      |

diff --git a/drivers/staging/comedi/drivers/addi_apci_3501.c b/drivers/staging/comedi/drivers/addi_apci_3501.c
index 725bfde..8ea3838 100644 (file)
--- a/drivers/staging/comedi/drivers/addi_apci_3501.c
+++ b/drivers/staging/comedi/drivers/addi_apci_3501.c
@@ -19,17 +19,36 @@ static const struct addi_board apci3501_boardtypes[] = {
                .i_AoMaxdata            = 16383,
                .pr_AoRangelist         = &range_apci3501_ao,
                .i_NbrDiChannel         = 2,
-               .i_NbrDoChannel         = 2,
-               .i_DoMaxdata            = 0x3,
                .interrupt              = v_APCI3501_Interrupt,
                .reset                  = i_APCI3501_Reset,
                .ao_config              = i_APCI3501_ConfigAnalogOutput,
                .ao_write               = i_APCI3501_WriteAnalogOutput,
                .di_bits                = apci3501_di_insn_bits,
-               .do_bits                = apci3501_do_insn_bits,
        },
 };
 
+static int apci3501_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 mask = data[0];
+       unsigned int bits = data[1];
+
+       s->state = inl(devpriv->iobase + APCI3501_DIGITAL_OP);
+       if (mask) {
+               s->state &= ~mask;
+               s->state |= (bits & mask);
+
+               outl(s->state, devpriv->iobase + APCI3501_DIGITAL_OP);
+       }
+
+       data[1] = s->state;
+
+       return insn->n;
+}
+
 static int i_ADDIDATA_InsnReadEeprom(struct comedi_device *dev,
                                     struct comedi_subdevice *s,
                                     struct comedi_insn *insn,
@@ -132,8 +151,6 @@ static int apci3501_auto_attach(struct comedi_device *dev,
        devpriv->s_EeParameters.i_AiMaxdata = this_board->i_AiMaxdata;
        devpriv->s_EeParameters.i_AoMaxdata = this_board->i_AoMaxdata;
        devpriv->s_EeParameters.i_NbrDiChannel = this_board->i_NbrDiChannel;
-       devpriv->s_EeParameters.i_NbrDoChannel = this_board->i_NbrDoChannel;
-       devpriv->s_EeParameters.i_DoMaxdata = this_board->i_DoMaxdata;
        devpriv->s_EeParameters.i_Dma = this_board->i_Dma;
        devpriv->s_EeParameters.ui_MinAcquisitiontimeNs =
                this_board->ui_MinAcquisitiontimeNs;
@@ -240,27 +257,15 @@ static int apci3501_auto_attach(struct comedi_device *dev,
        } else {
                s->type = COMEDI_SUBD_UNUSED;
        }
-       /*  Allocate and Initialise DO Subdevice Structures */
-       s = &dev->subdevices[3];
-       if (devpriv->s_EeParameters.i_NbrDoChannel) {
-               s->type = COMEDI_SUBD_DO;
-               s->subdev_flags =
-                       SDF_READABLE | SDF_WRITEABLE | SDF_GROUND | SDF_COMMON;
-               s->n_chan = devpriv->s_EeParameters.i_NbrDoChannel;
-               s->maxdata = devpriv->s_EeParameters.i_DoMaxdata;
-               s->len_chanlist =
-                       devpriv->s_EeParameters.i_NbrDoChannel;
-               s->range_table = &range_digital;
-               s->io_bits = 0xf;       /* all bits output */
 
-               /* insn_config - for digital output memory */
-               s->insn_config = this_board->do_config;
-               s->insn_write = this_board->do_write;
-               s->insn_bits = this_board->do_bits;
-               s->insn_read = this_board->do_read;
-       } else {
-               s->type = COMEDI_SUBD_UNUSED;
-       }
+       /* Initialize the digital output subdevice */
+       s = &dev->subdevices[3];
+       s->type         = COMEDI_SUBD_DO;
+       s->subdev_flags = SDF_WRITEABLE;
+       s->n_chan       = 2;
+       s->maxdata      = 1;
+       s->range_table  = &range_digital;
+       s->insn_bits    = apci3501_do_insn_bits;
 
        /*  Allocate and Initialise Timer Subdevice Structures */
        s = &dev->subdevices[4];