Daniel Baluta schrieb am 02.10.2014 15:43:
> We need a way to store events generated by iio_dummy_evgen module,
> in order to correctly process IRQs in iio_simple_dummy_events.
>
> For the moment, we add two registers:
>
> * id_reg - ID register, stores the source of the event
> * id_data - DATA register, stores the type of the event
>
> e.g echo 4 > /sys/bus/iio/devices/iio_evgen/poke2
>
> id_reg 0x02, id_data 0x04
>
> This means, event of type 4 was generated by fake device 2.
>
> We currently use a hardcoded mapping of virtual events to IIO events.
>
> Signed-off-by: Daniel Baluta <daniel.baluta@xxxxxxxxx>
> Signed-off-by: Irina Tirdea <irina.tirdea@xxxxxxxxx>
> ---
> drivers/staging/iio/iio_dummy_evgen.c | 16 ++++++++++++++++
> drivers/staging/iio/iio_dummy_evgen.h | 7 +++++++
> drivers/staging/iio/iio_simple_dummy.h | 2 ++
> drivers/staging/iio/iio_simple_dummy_events.c | 23 ++++++++++++++++++-----
> 4 files changed, 43 insertions(+), 5 deletions(-)
>
<...>
> @@ -153,6 +161,14 @@ static ssize_t iio_evgen_poke(struct device *dev,
> size_t len)
> {
> struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
> + unsigned long event, ret;
int ret
> +
> + ret = kstrtoul(buf, 10, &event);
> + if (ret)
> + return ret;
> +
> + iio_evgen->regs[this_attr->address].reg_id = this_attr->address;
> + iio_evgen->regs[this_attr->address].reg_data = event;
>
> if (iio_evgen->enabled[this_attr->address])
> handle_nested_irq(iio_evgen->base + this_attr->address);
<...>
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