#define NI6527_DO_REG(x) (0x03 + (x))
#define NI6527_ID_REG 0x06
#define NI6527_CLR_REG 0x07
-#define NI6527_CLR_EDGE (1 << 3)
-#define NI6527_CLR_OVERFLOW (1 << 2)
-#define NI6527_CLR_FILT (1 << 1)
-#define NI6527_CLR_INTERVAL (1 << 0)
+#define NI6527_CLR_EDGE BIT(3)
+#define NI6527_CLR_OVERFLOW BIT(2)
+#define NI6527_CLR_FILT BIT(1)
+#define NI6527_CLR_INTERVAL BIT(0)
#define NI6527_CLR_IRQS (NI6527_CLR_EDGE | NI6527_CLR_OVERFLOW)
#define NI6527_CLR_RESET_FILT (NI6527_CLR_FILT | NI6527_CLR_INTERVAL)
#define NI6527_FILT_INTERVAL_REG(x) (0x08 + (x))
#define NI6527_FILT_ENA_REG(x) (0x0c + (x))
#define NI6527_STATUS_REG 0x14
-#define NI6527_STATUS_IRQ (1 << 2)
-#define NI6527_STATUS_OVERFLOW (1 << 1)
-#define NI6527_STATUS_EDGE (1 << 0)
+#define NI6527_STATUS_IRQ BIT(2)
+#define NI6527_STATUS_OVERFLOW BIT(1)
+#define NI6527_STATUS_EDGE BIT(0)
#define NI6527_CTRL_REG 0x15
-#define NI6527_CTRL_FALLING (1 << 4)
-#define NI6527_CTRL_RISING (1 << 3)
-#define NI6527_CTRL_IRQ (1 << 2)
-#define NI6527_CTRL_OVERFLOW (1 << 1)
-#define NI6527_CTRL_EDGE (1 << 0)
+#define NI6527_CTRL_FALLING BIT(4)
+#define NI6527_CTRL_RISING BIT(3)
+#define NI6527_CTRL_IRQ BIT(2)
+#define NI6527_CTRL_OVERFLOW BIT(1)
+#define NI6527_CTRL_EDGE BIT(0)
#define NI6527_CTRL_DISABLE_IRQS 0
#define NI6527_CTRL_ENABLE_IRQS (NI6527_CTRL_FALLING | \
NI6527_CTRL_RISING | \