Re: [PATCH 2/2] add newhaven lcd tty driver on i2c
From: atull
Date: Tue Mar 17 2015 - 17:41:50 EST
On Tue, 17 Mar 2015, Greg Kroah-Hartman wrote:
> On Tue, Mar 17, 2015 at 03:36:47PM -0500, Alan Tull wrote:
> > Supports the Newhaven NHDâ0216K3ZâNSWâBBW 2x16 LCD module as i2c slave.
> > Devices will show up as /dev/ttyLCD0, etc.
> >
> > * Backspace is supported to the beginning of the current line.
> > * i.e. printf '\b' > /dev/ttyLCD0
> >
> > * ESC [ 2 J
> > * erase whole display and reset cursor to home.
> > * i.e. printf '\e[2J' > /dev/ttyLCD0
> >
> > * ESC [ 2 K
> > * erase current line and set cursor to beginning of line.
> > * i.e. printf '\e[2K' > /dev/ttyLCD0
> >
> > * CR and LF are supported.
> >
> > * Vertical scroll when cursor is on bottom line and receive end of line.
> >
> > Default brightness can be set from the device tree/plat data.
> >
> > Brightness can be set from a sysfs file, for example:
> > * echo 6 > /sys/devices/soc.0/ffc04000.i2c/i2c-0/0-0028/brightness
> >
> > Signed-off-by: Alan Tull <atull@xxxxxxxxxxxxxxxxxxxxx>
>
> This should use the new fb_tft api instead of trying to look like a tty
> device. That framework is merged in the staging-next branch of the
> staging.git kernel tree and will show up in 4.1-rc1. Please port this
> driver to that api and submit a patch for me to take for the staging
> tree so that we don't have one-off devices like this.
Cool! Will do.
Thanks!
Alan
>
> thanks,
>
> greg k-h
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