staging: comedi: c6xdigio: define the register map

The register map was already defined but it was not being used. Rename
to defines and use them in the code.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/comedi/drivers/c6xdigio.c b/drivers/staging/comedi/drivers/c6xdigio.c
index 2189e5b..a05196b 100644 (file)
--- a/drivers/staging/comedi/drivers/c6xdigio.c
+++ b/drivers/staging/comedi/drivers/c6xdigio.c
@@ -44,11 +44,12 @@ http://robot0.ge.uiuc.edu/~spong/mecha/
 #include "../comedidev.h"
 
 /*
- * port offsets
+ * Register I/O map
  */
-#define C6XDIGIO_PARALLEL_DATA 0
-#define C6XDIGIO_PARALLEL_STATUS 1
-#define C6XDIGIO_PARALLEL_CONTROL 2
+#define C6XDIGIO_DATA_REG      0x00
+#define C6XDIGIO_STATUS_REG    0x01
+#define C6XDIGIO_CTRL_REG      0x02
+
 struct pwmbitstype {
        unsigned sb0:2;
        unsigned sb1:2;
@@ -83,7 +84,7 @@ static int c6xdigio_chk_status(struct comedi_device *dev, unsigned long context)
        int timeout = 0;
 
        do {
-               status = inb(dev->iobase + 1);
+               status = inb(dev->iobase + C6XDIGIO_STATUS_REG);
                if ((status & 0x80) != context)
                        return 0;
                timeout++;
@@ -95,7 +96,7 @@ static int c6xdigio_chk_status(struct comedi_device *dev, unsigned long context)
 static int c6xdigio_write_data(struct comedi_device *dev,
                               unsigned int val, unsigned int status)
 {
-       outb_p(val, dev->iobase);
+       outb_p(val, dev->iobase + C6XDIGIO_DATA_REG);
        return c6xdigio_chk_status(dev, status);
 }
 
@@ -146,28 +147,28 @@ static int c6xdigio_encoder_read(struct comedi_device *dev,
 
        c6xdigio_write_data(dev, ppcmd, 0x00);
 
-       enc.bits.sb0 = ((inb(dev->iobase + 1) >> 3) & 0x7);
+       enc.bits.sb0 = ((inb(dev->iobase + C6XDIGIO_STATUS_REG) >> 3) & 0x7);
        c6xdigio_write_data(dev, ppcmd + 0x4, 0x80);
 
-       enc.bits.sb1 = ((inb(dev->iobase + 1) >> 3) & 0x7);
+       enc.bits.sb1 = ((inb(dev->iobase + C6XDIGIO_STATUS_REG) >> 3) & 0x7);
        c6xdigio_write_data(dev, ppcmd, 0x00);
 
-       enc.bits.sb2 = ((inb(dev->iobase + 1) >> 3) & 0x7);
+       enc.bits.sb2 = ((inb(dev->iobase + C6XDIGIO_STATUS_REG) >> 3) & 0x7);
        c6xdigio_write_data(dev, ppcmd + 0x4, 0x80);
 
-       enc.bits.sb3 = ((inb(dev->iobase + 1) >> 3) & 0x7);
+       enc.bits.sb3 = ((inb(dev->iobase + C6XDIGIO_STATUS_REG) >> 3) & 0x7);
        c6xdigio_write_data(dev, ppcmd, 0x00);
 
-       enc.bits.sb4 = ((inb(dev->iobase + 1) >> 3) & 0x7);
+       enc.bits.sb4 = ((inb(dev->iobase + C6XDIGIO_STATUS_REG) >> 3) & 0x7);
        c6xdigio_write_data(dev, ppcmd + 0x4, 0x80);
 
-       enc.bits.sb5 = ((inb(dev->iobase + 1) >> 3) & 0x7);
+       enc.bits.sb5 = ((inb(dev->iobase + C6XDIGIO_STATUS_REG) >> 3) & 0x7);
        c6xdigio_write_data(dev, ppcmd, 0x00);
 
-       enc.bits.sb6 = ((inb(dev->iobase + 1) >> 3) & 0x7);
+       enc.bits.sb6 = ((inb(dev->iobase + C6XDIGIO_STATUS_REG) >> 3) & 0x7);
        c6xdigio_write_data(dev, ppcmd + 0x4, 0x80);
 
-       enc.bits.sb7 = ((inb(dev->iobase + 1) >> 3) & 0x7);
+       enc.bits.sb7 = ((inb(dev->iobase + C6XDIGIO_STATUS_REG) >> 3) & 0x7);
        c6xdigio_write_data(dev, ppcmd, 0x00);
 
        c6xdigio_write_data(dev, 0x00, 0x80);