staging: comedi: rti800: tidy up the register map defines

Convert the register defines to hex and the register bit defines
to bit shifts.

Rename the CSR register bit defines to help document them and move
them so they are associated with the register.

Rename the RTI800_SIZE define to RTI800_IOSIZE.

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>

1 files changed, 31 insertions, 33 deletions

diff --git a/drivers/staging/comedi/drivers/rti800.c b/drivers/staging/comedi/drivers/rti800.c
index 03ac029..a94dbe7 100644
--- a/drivers/staging/comedi/drivers/rti800.c
+++ b/drivers/staging/comedi/drivers/rti800.c
@@ -58,36 +58,34 @@
 
 #include <linux/ioport.h>
 
-#define RTI800_SIZE 16
-
-#define RTI800_CSR 0
-#define RTI800_MUXGAIN 1
-#define RTI800_CONVERT 2
-#define RTI800_ADCLO 3
-#define RTI800_ADCHI 4
-#define RTI800_DAC0LO 5
-#define RTI800_DAC0HI 6
-#define RTI800_DAC1LO 7
-#define RTI800_DAC1HI 8
-#define RTI800_CLRFLAGS 9
-#define RTI800_DI 10
-#define RTI800_DO 11
-#define RTI800_9513A_DATA 12
-#define RTI800_9513A_CNTRL 13
-#define RTI800_9513A_STATUS 13
-
 /*
- * flags for CSR register
+ * Register map
  */
-
-#define RTI800_BUSY		0x80
-#define RTI800_DONE		0x40
-#define RTI800_OVERRUN		0x20
-#define RTI800_TCR		0x10
-#define RTI800_DMA_ENAB		0x08
-#define RTI800_INTR_TC		0x04
-#define RTI800_INTR_EC		0x02
-#define RTI800_INTR_OVRN	0x01
+#define RTI800_CSR		0x00
+#define RTI800_CSR_BUSY		(1 << 7)
+#define RTI800_CSR_DONE		(1 << 6)
+#define RTI800_CSR_OVERRUN	(1 << 5)
+#define RTI800_CSR_TCR		(1 << 4)
+#define RTI800_CSR_DMA_ENAB	(1 << 3)
+#define RTI800_CSR_INTR_TC	(1 << 2)
+#define RTI800_CSR_INTR_EC	(1 << 1)
+#define RTI800_CSR_INTR_OVRN	(1 << 0)
+#define RTI800_MUXGAIN		0x01
+#define RTI800_CONVERT		0x02
+#define RTI800_ADCLO		0x03
+#define RTI800_ADCHI		0x04
+#define RTI800_DAC0LO		0x05
+#define RTI800_DAC0HI		0x06
+#define RTI800_DAC1LO		0x07
+#define RTI800_DAC1HI		0x08
+#define RTI800_CLRFLAGS		0x09
+#define RTI800_DI		0x0a
+#define RTI800_DO		0x0b
+#define RTI800_9513A_DATA	0x0c
+#define RTI800_9513A_CNTRL	0x0d
+#define RTI800_9513A_STATUS	0x0d
+
+#define RTI800_IOSIZE		0x10
 
 #define RTI800_AI_TIMEOUT	100
 
@@ -159,11 +157,11 @@ static int rti800_ai_wait_for_conversion(struct comedi_device *dev,
 
 	for (i = 0; i < timeout; i++) {
 		status = inb(dev->iobase + RTI800_CSR);
-		if (status & RTI800_OVERRUN) {
+		if (status & RTI800_CSR_OVERRUN) {
 			outb(0, dev->iobase + RTI800_CLRFLAGS);
 			return -EIO;
 		}
-		if (status & RTI800_DONE)
+		if (status & RTI800_CSR_DONE)
 			return 0;
 		udelay(1);
 	}
@@ -190,7 +188,7 @@ static int rti800_ai_insn_read(struct comedi_device *dev,
 		devpriv->muxgain_bits = muxgain_bits;
 		outb(devpriv->muxgain_bits, dev->iobase + RTI800_MUXGAIN);
 		/*
-		 * Without a delay here, the RTI_OVERRUN bit
+		 * Without a delay here, the RTI_CSR_OVERRUN bit
 		 * gets set, and you will have an error.
 		 */
 		if (insn->n > 0) {
@@ -298,7 +296,7 @@ static int rti800_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 	struct comedi_subdevice *s;
 
 	iobase = it->options[0];
-	if (!request_region(iobase, RTI800_SIZE, dev->board_name))
+	if (!request_region(iobase, RTI800_IOSIZE, dev->board_name))
 		return -EIO;
 	dev->iobase = iobase;
 
@@ -383,7 +381,7 @@ static int rti800_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 static void rti800_detach(struct comedi_device *dev)
 {
 	if (dev->iobase)
-		release_region(dev->iobase, RTI800_SIZE);
+		release_region(dev->iobase, RTI800_IOSIZE);
 }
 
 static struct comedi_driver rti800_driver = {