static unsigned ni_660x_clock_src_select(const struct ni_gpct *counter)
{
unsigned clock_source = 0;
unsigned i;
const unsigned input_select = (ni_tio_get_soft_copy(counter,
NITIO_Gi_Input_Select_Reg
(counter->counter_index))
& Gi_Source_Select_Mask) >>
Gi_Source_Select_Shift;
switch (input_select) {
case NI_660x_Timebase_1_Clock:
clock_source = NI_GPCT_TIMEBASE_1_CLOCK_SRC_BITS;
break;
case NI_660x_Timebase_2_Clock:
clock_source = NI_GPCT_TIMEBASE_2_CLOCK_SRC_BITS;
break;
case NI_660x_Timebase_3_Clock:
clock_source = NI_GPCT_TIMEBASE_3_CLOCK_SRC_BITS;
break;
case NI_660x_Logic_Low_Clock:
clock_source = NI_GPCT_LOGIC_LOW_CLOCK_SRC_BITS;
break;
case NI_660x_Source_Pin_i_Clock:
clock_source = NI_GPCT_SOURCE_PIN_i_CLOCK_SRC_BITS;
break;
case NI_660x_Next_Gate_Clock:
clock_source = NI_GPCT_NEXT_GATE_CLOCK_SRC_BITS;
break;
case NI_660x_Next_TC_Clock:
clock_source = NI_GPCT_NEXT_TC_CLOCK_SRC_BITS;
break;
default:
for (i = 0; i <= ni_660x_max_rtsi_channel; ++i) {
if (input_select == NI_660x_RTSI_Clock(i)) {
clock_source = NI_GPCT_RTSI_CLOCK_SRC_BITS(i);
break;
}
}
if (i <= ni_660x_max_rtsi_channel)
break;
for (i = 0; i <= ni_660x_max_source_pin; ++i) {
if (input_select == NI_660x_Source_Pin_Clock(i)) {
clock_source =
NI_GPCT_SOURCE_PIN_CLOCK_SRC_BITS(i);
break;
}
}
if (i <= ni_660x_max_source_pin)
break;
BUG();
break;
}
clock_source |= ni_tio_clock_src_modifiers(counter);
return clock_source;
}
static unsigned ni_660x_source_select_bits(lsampl_t clock_source)
{
unsigned ni_660x_clock;
unsigned i;
const unsigned clock_select_bits =
clock_source & NI_GPCT_CLOCK_SRC_SELECT_MASK;
switch (clock_select_bits) {
case NI_GPCT_TIMEBASE_1_CLOCK_SRC_BITS:
ni_660x_clock = NI_660x_Timebase_1_Clock;
break;
case NI_GPCT_TIMEBASE_2_CLOCK_SRC_BITS:
ni_660x_clock = NI_660x_Timebase_2_Clock;
break;
case NI_GPCT_TIMEBASE_3_CLOCK_SRC_BITS:
ni_660x_clock = NI_660x_Timebase_3_Clock;
break;
case NI_GPCT_LOGIC_LOW_CLOCK_SRC_BITS:
ni_660x_clock = NI_660x_Logic_Low_Clock;
break;
case NI_GPCT_SOURCE_PIN_i_CLOCK_SRC_BITS:
ni_660x_clock = NI_660x_Source_Pin_i_Clock;
break;
case NI_GPCT_NEXT_GATE_CLOCK_SRC_BITS:
ni_660x_clock = NI_660x_Next_Gate_Clock;
break;
case NI_GPCT_NEXT_TC_CLOCK_SRC_BITS:
ni_660x_clock = NI_660x_Next_TC_Clock;
break;
default:
for (i = 0; i <= ni_660x_max_rtsi_channel; ++i) {
if (clock_select_bits == NI_GPCT_RTSI_CLOCK_SRC_BITS(i)) {
ni_660x_clock = NI_660x_RTSI_Clock(i);
break;
}
}
if (i <= ni_660x_max_rtsi_channel)
break;
for (i = 0; i <= ni_660x_max_source_pin; ++i) {
if (clock_select_bits ==
NI_GPCT_SOURCE_PIN_CLOCK_SRC_BITS(i)) {
ni_660x_clock = NI_660x_Source_Pin_Clock(i);
break;
}
}
if (i <= ni_660x_max_source_pin)
break;
ni_660x_clock = 0;
BUG();
break;
}
return Gi_Source_Select_Bits(ni_660x_clock);
}
