staging: comedi: amplc_dio200_common: introduce DIO200_GAT_SEL() macro

Replace the DIO200_[XYZ]GAT_SEL defines with a macro that returns the
correct register offset.

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/amplc_dio200_common.c b/drivers/staging/comedi/drivers/amplc_dio200_common.c
index ab87f2e..709fe1a 100644 (file)
--- a/drivers/staging/comedi/drivers/amplc_dio200_common.c
+++ b/drivers/staging/comedi/drivers/amplc_dio200_common.c
@@ -33,9 +33,7 @@
 #define DIO200_IO_SIZE         0x20
 #define DIO200_PCIE_IO_SIZE    0x4000
 #define DIO200_CLK_SCE(x)      (0x18 + (x))    /* Group X/Y/Z clock sel reg */
-#define DIO200_XGAT_SCE                0x1b    /* Group X gate selection register */
-#define DIO200_YGAT_SCE                0x1c    /* Group Y gate selection register */
-#define DIO200_ZGAT_SCE                0x1d    /* Group Z gate selection register */
+#define DIO200_GAT_SCE(x)      (0x1b + (x))    /* Group X/Y/Z gate sel reg */
 #define DIO200_INT_SCE         0x1e    /* Interrupt enable/status register */
 /* Extra registers for new PCIe boards */
 #define DIO200_ENHANCE         0x20    /* 1 to enable enhanced features */
@@ -732,7 +730,7 @@ static int dio200_subdev_8254_init(struct comedi_device *dev,
                /* Derive CLK_SCE and GAT_SCE register offsets from
                 * 8254 offset. */
                subpriv->clk_sce_ofs = DIO200_CLK_SCE(offset >> 3);
-               subpriv->gat_sce_ofs = DIO200_XGAT_SCE + (offset >> 3);
+               subpriv->gat_sce_ofs = DIO200_GAT_SCE(offset >> 3);
                subpriv->which = (offset >> 2) & 1;
        }