Rename the CamelCase and convert the defines into a macro.
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>
        } else if (devpriv->is_m_series) {
                reg = NI_M_DAC_DIRECT_DATA_REG(chan);
        } else {
-               reg = (chan) ? DAC1_Direct_Data : DAC0_Direct_Data;
+               reg = NI_E_DAC_DIRECT_DATA_REG(chan);
        }
 
        ni_ao_config_chanlist(dev, s, &insn->chanspec, 1, 0);
 
 #define NI_E_AO_DEGLITCH               BIT(1)
 #define NI_E_AO_CFG_BIP                        BIT(0)
 
+#define NI_E_DAC_DIRECT_DATA_REG(x)    (0x18 + ((x) * 2)) /* w16 */
+
 #define NI_E_8255_BASE                 0x19    /* rw8 */
 
 #define NI_E_AI_FIFO_DATA_REG          0x1c    /* r16 */
 
 #define NI_E_AO_FIFO_DATA_REG          0x1e    /* w16 */
-#define DAC0_Direct_Data               0x18
-#define DAC1_Direct_Data               0x1a
 
 /* 611x registers (these boards differ from the e-series) */