staging: comedi: ni_tio_internal.h: replace NITIO_Gi_Autoincrement_Reg()

The "AutoIncrement" registers are sequential in the enum ni_gpct_register.
Replace this inline CamelCase function with a simple define.
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>

drivers/staging/comedi/drivers/ni_tio.c

@@ -372,12 +372,12 @@ void ni_tio_init_counter(struct ni_gpct *counter)
 
 	ni_tio_reset_count_and_disarm(counter);
 	/* initialize counter registers */
-	counter_dev->regs[NITIO_Gi_Autoincrement_Reg(counter->counter_index)] =
+	counter_dev->regs[NITIO_AUTO_INC_REG(counter->counter_index)] =
 	    0x0;
 	write_register(counter,
 		       counter_dev->
-		       regs[NITIO_Gi_Autoincrement_Reg(counter->counter_index)],
-		       NITIO_Gi_Autoincrement_Reg(counter->counter_index));
+		       regs[NITIO_AUTO_INC_REG(counter->counter_index)],
+		       NITIO_AUTO_INC_REG(counter->counter_index));
 	ni_tio_set_bits(counter, NITIO_Gi_Command_Reg(counter->counter_index),
 			~0, Gi_Synchronize_Gate_Bit);
 	ni_tio_set_bits(counter, NITIO_Gi_Mode_Reg(counter->counter_index), ~0,

drivers/staging/comedi/drivers/ni_tio_internal.h

@@ -21,20 +21,7 @@
 
 #include "ni_tio.h"
 
-static inline enum ni_gpct_register NITIO_Gi_Autoincrement_Reg(unsigned idx)
-{
-	switch (idx) {
-	case 0:
-		return NITIO_G0_AUTO_INC;
-	case 1:
-		return NITIO_G1_AUTO_INC;
-	case 2:
-		return NITIO_G2_AUTO_INC;
-	case 3:
-		return NITIO_G3_AUTO_INC;
-	}
-	return 0;
-}
+#define NITIO_AUTO_INC_REG(x)		(NITIO_G0_AUTO_INC + (x))
 
 static inline enum ni_gpct_register NITIO_Gi_Command_Reg(unsigned idx)
 {