Hi Arnaud, On Sat, Oct 26, 2013 at 11:00:49PM +0200, Arnaud Ebalard wrote: > Hi, > > I did not know where to ask but because it is related to an ARM > platform, I decide to start here. NETGEAR ReadyNAS 104 has a front > 16x2 characters backlight-capable LCD (Winstar WH1608). It is > controlled via 11 GPIOS. > > I am starting to write a driver for it to be able to pass messages (via > /proc?) from userland to be displayed on the LCD and also enable/disable > the backlight. I just wonder where it should go (auxdisplay? staging? > video/backlight? drivers/misc?), if there are existing interfaces for > such beasts and on which existing driver (if any) I could base my dev. > > If you have any idea where/who I can ask, do not hesitate. Additionally, > if someone has thoughts on what the DT interface should look like for > such a device, I am interested. You should probably take a look at the "panel" driver in staging. It's a driver I wrote 10-15 years ago and that someone submitted. It supports most 2-line text LCD panels with various wirings (serial/parallel), and relies on parport to drive them. You can probably reuse some/most of it for your driver. You may also possibly add a new backend to it to access GPIOs. Userland drives it by writing into /dev/lcd. I don't know if that can help. Cheers, Willy -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
