Hi Maxim, on 29 Jul 10 at 18:27, Maxim Levitsky wrote: > On Thu, 2010-07-29 at 09:25 +0200, Christoph Bartelmus wrote: >> Hi! >> >> Maxim Levitsky "maximlevitsky@xxxxxxxxx" wrote: >> >>> Also reuse LIRC_SET_MEASURE_CARRIER_MODE as LIRC_SET_LEARN_MODE >>> (LIRC_SET_LEARN_MODE will start carrier reports if possible, and >>> tune receiver to wide band mode) >> >> I don't like the rename of the ioctl. The ioctl should enable carrier >> reports. Anything else is hardware specific. Learn mode gives a somewhat >> wrong association to me. irrecord always has been using "learn mode" >> without ever using this ioctl. > Why? If an ioctl enables/disables measuring of the carrier, then call it LIRC_SET_MEASURE_CARRIER_MODE and not LIRC_SET_LEARN_MODE. Whether we need a LIRC_ENABLE_WIDE_BAND_RECEIVER ioctl is another question. > Carrier measure (if supported by hardware I think should always be > enabled, because it can help in-kernel decoders). That does not work in the real-world scenario. All receivers with a high range demodulate the signal and you won't get the carrier. [...] > Another thing is reporting these results to lirc. > By default lirc shouldn't get carrier reports, but as soon as irrecord > starts, it can place device in special mode that allows it to capture > input better, and optionally do carrier reports. And that's what LIRC_SET_MEASURE_CARRIER_MODE is made for. > Do you think carrier reports are needed by lircd? No. Christoph -- 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
