Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

There is a little window of time where it happens that the
acquisition_done interrupt come after reading the irq_status but before
the irq acknowledgment. The result is that also acquisition_done is
acked

To solve the problem, the irq handler give the irq acknowledgment only
after it handles all active interrupts. Then, it reads again for active
interrupt and it handles them
Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

In single-shot mode, the ADC use the DDR memory as a circular buffer
and it continuously writes into the memory until the trigger fire
occurs. When the trigger occur we know where our samples are stored
thanks to the trigger_position register.
Signed-off-by: Federico Vaga <federico.vaga@gmail.com>
Signed-off-by: Michel Arruat <michel.arruat@cern.ch>

Reset pre-samples, post-samples and nshots register on trigger instance
destroy. This allow a software trigger to work with the ADC with a known
configuration. The software trigger will be able to change only the
post-samples register
Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

The cset operations init() and exit() are removed from the ZIO framework
Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

The library was checking the flags field, but it must check the mask field
to verify if there is a configuration to apply. To avoid situations where
the user is convinced to apply a configuration but he forgots to set
the bit mask, now the library return an error if the user tries to configure
with an empty mask.

Thank to "Michel Arruat <michel.arruat@cern.ch>" who found the problem
Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

The channel index is zero-based, so the first channel is "channel 0". The
help string was ambiguous.
Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

The program allow the use of flags: --external and --negative-edge, but it
does not apply the correspondent configuration on the trigger.
Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

This patch addresses two issues with to_dev_zio:

1. the argument of the macro is never used (_dev).

2. as to_dev_zio is taking a struct fmcadc_dev member as an argument
supposed to be a gid, the compiler spits a warning. A (void *) cast
is a quick and dirty fix (actually, dev should be casted everywhere
to struct fmcadc_gid *, but anyway).

The first release of SDB-aware firmware modifies the memory map
moving around the cores and changing the CSR core layout. These
changes take it into account.

This will become irrelevant when the driver uses the SDB information
fully.

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

ZIO automatically update the nsamples value with the number of sample of
the interleaved acquisition. It is not required by device to calculate
the number of samples in the interleaved acquisition
Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

This program use the fmcadc library to perform a simple acquisition on a
fmc adc 100MS 4ch 14bit
Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

The use of the Generic Instance Descriptor (GID) allows the library to use
a generic pointer during routing operations. When the library routes an
operation to a particular kind of device, the library will do the correct
container_of() on the gid pointer; so, it retrieves the structure associated to
the particular device.

This procedure avoid to use a double pointer during the routing operation.
Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>