xcan_reg
u32 (*read_reg)(const struct xcan_priv *priv, enum xcan_reg reg);
void (*write_reg)(const struct xcan_priv *priv, enum xcan_reg reg,
static void xcan_write_reg_le(const struct xcan_priv *priv, enum xcan_reg reg,
static u32 xcan_read_reg_le(const struct xcan_priv *priv, enum xcan_reg reg)
static void xcan_write_reg_be(const struct xcan_priv *priv, enum xcan_reg reg,
static u32 xcan_read_reg_be(const struct xcan_priv *priv, enum xcan_reg reg)