From mboxrd@z Thu Jan 1 00:00:00 1970 From: atull Subject: Re: [PATCH 2/2] add newhaven lcd tty driver on i2c Date: Tue, 17 Mar 2015 16:39:30 -0500 Message-ID: References: <1426624607-2832-1-git-send-email-atull@opensource.altera.com> <1426624607-2832-3-git-send-email-atull@opensource.altera.com> <20150317211605.GB8441@kroah.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="8323329-1605024904-1426628386=:21358" Return-path: In-Reply-To: <20150317211605.GB8441@kroah.com> Sender: linux-kernel-owner@vger.kernel.org To: Greg Kroah-Hartman Cc: Jiri Slaby , Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, delicious.quinoa@gmail.com, dinguyen@opensource.altera.com, yvanderv@opensource.altera.com List-Id: devicetree@vger.kernel.org --8323329-1605024904-1426628386=:21358 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8BIT 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 NHD‐0216K3Z‐NSW‐BBW 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 > > 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 > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ > --8323329-1605024904-1426628386=:21358--