Em Tue, 12 Jul 2016 14:01:59 +0100 Sean Young <sean@xxxxxxxx> escreveu: > On Tue, Jul 12, 2016 at 09:42:02AM -0300, Mauro Carvalho Chehab wrote: > > Move the documentation of this ioctl from lirc_ioctl to its > > own file, and add a short description about the pulse mode > > used by IR RX. > > > > Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxxx> > > --- > > Documentation/media/uapi/rc/lirc-get-rec-mode.rst | 59 ++++++++++++++++++++++ > > .../media/uapi/rc/lirc_device_interface.rst | 1 + > > Documentation/media/uapi/rc/lirc_ioctl.rst | 9 ---- > > 3 files changed, 60 insertions(+), 9 deletions(-) > > create mode 100644 Documentation/media/uapi/rc/lirc-get-rec-mode.rst > > > > diff --git a/Documentation/media/uapi/rc/lirc-get-rec-mode.rst b/Documentation/media/uapi/rc/lirc-get-rec-mode.rst > > new file mode 100644 > > index 000000000000..d46a488594c9 > > --- /dev/null > > +++ b/Documentation/media/uapi/rc/lirc-get-rec-mode.rst > > @@ -0,0 +1,59 @@ > > +.. -*- coding: utf-8; mode: rst -*- > > + > > +.. _lirc_get_rec_mode: > > + > > +*********************** > > +ioctl LIRC_GET_REC_MODE > > +*********************** > > + > > +Name > > +==== > > + > > +LIRC_GET_REC_MODE - Get supported receive modes. > > + > > +Synopsis > > +======== > > + > > +.. cpp:function:: int ioctl( int fd, int request, __u32 rx_modes) > > + > > +Arguments > > +========= > > + > > +``fd`` > > + File descriptor returned by open(). > > + > > +``request`` > > + LIRC_GET_REC_MODE > > + > > +``rx_modes`` > > + Bitmask with the supported transmit modes. > > + > > +Description > > +=========== > > + > > +Get supported receive modes. > > + > > +Supported receive modes > > +======================= > > + > > +.. _lirc-mode-mode2: > > + > > +``LIRC_MODE_MODE2`` > > + > > + The driver returns a sequence of pulse and space codes to userspace. > > + > > +.. _lirc-mode-lirccode: > > + > > +``LIRC_MODE_LIRCCODE`` > > + > > + The IR signal is decoded internally by the receiver. The LIRC interface > > + returns the scancode as an integer value. This is the usual mode used > > + by several TV media cards. > > Actually rc devices that produce scancodes (rather than raw IR) do have not > have an associated lirc device so no LIRC_MODE_LIRCCODE there. Yeah, I noticed. Yet, the core reports feature = LIRC_MODE_LIRCCODE if the driver doesn't set features. > The exception > to this is the lirc_sasem and lirc_zilog drivers in staging; those two are the > only drivers that use LIRC_MODE_LIRCCODE at all. > > The lirc_sasem driver should be ported to rc-core, but I've never been able > to find the hardware for it. When it is ported it won't need LIRCCODE any > more. > > The lirc_zilog driver is just for sending and also should be ported to > rc-core. The hardware supports sending raw IR, I just do not know how so > I can't port it. Still, it makes sense to have LIRC_MODE_LIRCCODE supported for IR send, in order to support HDMI CEC. That's why I opted to keep it documented. Regards, Mauro -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
