hpc3130_get
static int hpc3130_get(intptr_t, int, hpc3130_unit_t *, int);
err = hpc3130_get(arg, HPC3130_HP_STATUS_REG(port), unitp,
err = hpc3130_get(arg, HPC3130_HP_CONTROL_REG(port), unitp,
err = hpc3130_get(arg, HPC3130_INTERRUPT_STATUS_REG(port),
err = hpc3130_get(arg, HPC3130_GENERAL_CONFIG_REG(port),
err = hpc3130_get(arg, HPC3130_ATTENTION_INDICATOR(port),
err = hpc3130_get(arg, HPC3130_INTERRUPT_ENABLE_REG(port),