Re: [PATCH 3/3 v2] lirc driver for SoundGraph iMON IR receivers anddisplays

From: Mauro Carvalho Chehab
Date: Mon Nov 23 2009 - 07:59:11 EST


Jarod Wilson wrote:
> lirc driver for SoundGraph iMON IR receivers and displays
>
> Successfully tested with multiple devices with and without displays.
>


> +static struct usb_device_id imon_usb_id_table[] = {
> + /* TriGem iMON (IR only) -- TG_iMON.inf */
> + { USB_DEVICE(0x0aa8, 0x8001) },
...

Another set of USB vendor ID's... this time, vendors weren't described. The
same comment I did on patch 2/3 applies here... IMO, we should really try
to create a global list of vendors/devices on kernel. Of course this is not
a non-go issue, as it is already present on several other USB drivers.

> +
> + /*
> + * Translate received data to pulse and space lengths.
> + * Received data is active low, i.e. pulses are 0 and
> + * spaces are 1.
> + *
> + * My original algorithm was essentially similar to
> + * Changwoo Ryu's with the exception that he switched
> + * the incoming bits to active high and also fed an
> + * initial space to LIRC at the start of a new sequence
> + * if the previous bit was a pulse.
> + *
> + * I've decided to adopt his algorithm.
> + */
> +

Before digging into all code details, am I wrong or this device has the
pulse/space decoding inside the chip?

In this case, we shouldn't really be converting their IR keystroke events into
a pseudo set of pulse/space marks, but use the standard events interface.

Cheers,
Mauro.

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