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staging: comedi: addi_apci_3501: cleanup the digital input subdevice 

The board supported by this driver has 2 digital input. 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.i_NbrDiChannel for the digital input
subdevice is no longer being used, remove initialization of it also.

Copy the apci3501_di_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_READABLE. The SDF_GROUND and SDF_COMMON flags only have meaning
for analog subdevices.

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>
This commit is contained in:
H Hartley Sweeten 2013-01-23 12:37:38 -07:00 committed by Greg Kroah-Hartman
parent 953a36c45a
commit 513192fc7e
2 changed files with 18 additions and 31 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/staging/comedi/drivers/addi-data/hwdrv_apci3501.c
View File

@ -84,18 +84,6 @@ static struct comedi_lrange range_apci3501_ao = {
}
};
static int apci3501_di_insn_bits(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned int *data)
{
struct addi_private *devpriv = dev->private;
data[1] = inl(devpriv->iobase + APCI3501_DIGITAL_IP) & 0x3;
return insn->n;
}
/*
+----------------------------------------------------------------------------+
| Function Name : int i_APCI3501_ConfigAnalogOutput |

31
drivers/staging/comedi/drivers/addi_apci_3501.c
View File

@ -18,15 +18,25 @@ static const struct addi_board apci3501_boardtypes[] = {
.pc_EepromChip = ADDIDATA_S5933,
.i_AoMaxdata = 16383,
.pr_AoRangelist = &range_apci3501_ao,
.i_NbrDiChannel = 2,
.interrupt = v_APCI3501_Interrupt,
.reset = i_APCI3501_Reset,
.ao_config = i_APCI3501_ConfigAnalogOutput,
.ao_write = i_APCI3501_WriteAnalogOutput,
.di_bits = apci3501_di_insn_bits,
},
};
static int apci3501_di_insn_bits(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned int *data)
{
struct addi_private *devpriv = dev->private;
data[1] = inl(devpriv->iobase + APCI3501_DIGITAL_IP) & 0x3;
return insn->n;
}
static int apci3501_do_insn_bits(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
@ -150,7 +160,6 @@ static int apci3501_auto_attach(struct comedi_device *dev,
devpriv->s_EeParameters.i_NbrAoChannel = this_board->i_NbrAoChannel;
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_Dma = this_board->i_Dma;
devpriv->s_EeParameters.ui_MinAcquisitiontimeNs =
this_board->ui_MinAcquisitiontimeNs;
@ -241,22 +250,12 @@ static int apci3501_auto_attach(struct comedi_device *dev,
}
/* Allocate and Initialise DI Subdevice Structures */
s = &dev->subdevices[2];
if (devpriv->s_EeParameters.i_NbrDiChannel) {
s->type = COMEDI_SUBD_DI;
s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_COMMON;
s->n_chan = devpriv->s_EeParameters.i_NbrDiChannel;
s->subdev_flags = SDF_READABLE;
s->n_chan = 2;
s->maxdata = 1;
s->len_chanlist =
devpriv->s_EeParameters.i_NbrDiChannel;
s->range_table = &range_digital;
s->io_bits = 0; /* all bits input */
s->insn_config = this_board->di_config;
s->insn_read = this_board->di_read;
s->insn_write = this_board->di_write;
s->insn_bits = this_board->di_bits;
} else {
s->type = COMEDI_SUBD_UNUSED;
}
s->insn_bits = apci3501_di_insn_bits;
/* Initialize the digital output subdevice */
s = &dev->subdevices[3];