/* Macros to access registers */
 
-/* Set Pacer start source select (write only) */
-#define RtdPacerStartSource(dev, v) \
-       writel(v, devpriv->las0+LAS0_PACER_START)
-
 /* Set Pacer stop source select (write only) */
 #define RtdPacerStopSource(dev, v) \
        writel(v, devpriv->las0+LAS0_PACER_STOP)
        /* setup the common case and override if needed */
        if (cmd->chanlist_len > 1) {
                /*DPRINTK ("rtd520: Multi channel setup\n"); */
-               RtdPacerStartSource(dev, 0);    /* software triggers pacer */
+               writel(0, devpriv->las0 + LAS0_PACER_START);
                writel(1, devpriv->las0 + LAS0_BURST_START);
                writel(2, devpriv->las0 + LAS0_ADC_CONVERSION);
        } else {                /* single channel */
                /*DPRINTK ("rtd520: single channel setup\n"); */
-               RtdPacerStartSource(dev, 0);    /* software triggers pacer */
+               writel(0, devpriv->las0 + LAS0_PACER_START);
                writel(1, devpriv->las0 + LAS0_ADC_CONVERSION);
        }
        RtdAboutCounter(dev, devpriv->fifoLen / 2 - 1); /* 1/2 FIFO */
                break;
 
        case TRIG_EXT:
-               RtdPacerStartSource(dev, 1);    /* EXTERNALy trigger pacer */
+               writel(1, devpriv->las0 + LAS0_PACER_START);
                break;
 
        default: