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Message-ID: <50CC18B3.5070800@gmail.com> Date: Sat, 15 Dec 2012 10:29:07 +0400 From: Nikolay Epifanov <nik.epifanov@...il.com> To: Joonyoung Shim <dofmind@...il.com> CC: Dmitry Torokhov <dmitry.torokhov@...il.com>, "linux-input@...r.kernel.org" <linux-input@...r.kernel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> Subject: Re: [PATCH] input: add MELFAS mms144 touchscreen driver On 15.12.2012 05:46, Joonyoung Shim wrote: > Hi, > > 2012년 12월 13일 목요일에 Nikolay Epifanov님이 작성: > > This is an initial driver for MELFAS touchscreen chip mms144. > > Signed-off-by: Nikolay Epifanov <nik.epifanov@...il.com> > --- > I don't know whether single driver could be used for both mms114 and > mms144. > Couldn't find datasheets for any of them. > > > The touch data process logic of this driver is almost same with it of > mms114 driver and offset of many registers is also same. I think you can > merge this to mms114 driver. > > Thanks. > > > There are two firmwares available under redistribution license from > AOSP tree: > for FPCB revisions 3.2 and 3.1. Not sure if those are Melfas original > or modified by Samsung. (Just for reference: they are > mms144_ts_rev3*.fw at > https://android.googlesource.com/device/samsung/tuna/+/214d003a47e7fe2962df667c5d65bce92a21a40e/ > > mux_fw_flash(bool) from platform data switches pins between > I2C<->GPIO modes. > > Driver has been tested on Samsung Galaxy Nexus except suspend/resume. > > Applied on > git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input.git > <http://git.kernel.org/pub/scm/linux/kernel/git/dtor/input.git> > branch next. > > drivers/input/touchscreen/Kconfig | 14 + > drivers/input/touchscreen/Makefile | 1 + > drivers/input/touchscreen/mms144.c | 821 > ++++++++++++++++++++++++++++++++++++ > include/linux/i2c/mms144.h | 34 ++ > 4 files changed, 870 insertions(+) > > diff --git a/drivers/input/touchscreen/Kconfig > b/drivers/input/touchscreen/Kconfig > index b93b598..78d9cd3 100644 > --- a/drivers/input/touchscreen/Kconfig > +++ b/drivers/input/touchscreen/Kconfig > @@ -369,6 +369,20 @@ config TOUCHSCREEN_MMS114 > To compile this driver as a module, choose M here: the > module will be called mms114. > > +config TOUCHSCREEN_MMS144 > + tristate "MELFAS MMS144 touchscreen" > + depends on I2C > + help > + Say Y here if you have the MELFAS MMS144 touchscreen > controller > + chip in your system. > + Such kind of chip can be found in Samsung Galaxy Nexus > + touchscreens. > + > + If unsure, say N. > + > + To compile this driver as a module, choose M here: the > + module will be called mms144. > + > config TOUCHSCREEN_MTOUCH > tristate "MicroTouch serial touchscreens" > select SERIO > diff --git a/drivers/input/touchscreen/Makefile > b/drivers/input/touchscreen/Makefile > index 5f949c0..cfbe87c 100644 > --- a/drivers/input/touchscreen/Makefile > +++ b/drivers/input/touchscreen/Makefile > @@ -39,6 +39,7 @@ obj-$(CONFIG_TOUCHSCREEN_MC13783) += mc13783_ts.o > obj-$(CONFIG_TOUCHSCREEN_MCS5000) += mcs5000_ts.o > obj-$(CONFIG_TOUCHSCREEN_MIGOR) += migor_ts.o > obj-$(CONFIG_TOUCHSCREEN_MMS114) += mms114.o > +obj-$(CONFIG_TOUCHSCREEN_MMS144) += mms144.o > obj-$(CONFIG_TOUCHSCREEN_MTOUCH) += mtouch.o > obj-$(CONFIG_TOUCHSCREEN_MK712) += mk712.o > obj-$(CONFIG_TOUCHSCREEN_HP600) += hp680_ts_input.o > diff --git a/drivers/input/touchscreen/mms144.c > b/drivers/input/touchscreen/mms144.c > new file mode 100644 > index 0000000..3bb84d0 > --- /dev/null > +++ b/drivers/input/touchscreen/mms144.c > @@ -0,0 +1,821 @@ > +/* > + * mms144.c - Touchscreen driver for Melfas MMS144 touch controllers > + * > + * Copyright (C) 2011 Google Inc. > + * Author: Dima Zavin <dima@...roid.com> > + * Simon Wilson <simonwilson@...gle.com> > + * Copyright (C) 2012 Nikolay Epifanov <nik.epifanov@...il.com> > + * > + * ISP reflashing code based on original code from Melfas. > + * > + * This program is free software; you can redistribute it and/or > modify it > + * under the terms of the GNU General Public License as > published by the > + * Free Software Foundation; either version 2 of the License, or > (at your > + * option) any later version. > + * > + */ > + > +#include <linux/completion.h> > +#include <linux/delay.h> > +#include <linux/firmware.h> > +#include <linux/gpio.h> > +#include <linux/i2c.h> > +#include <linux/i2c/mms144.h> > +#include <linux/init.h> > +#include <linux/input.h> > +#include <linux/input/mt.h> > +#include <linux/interrupt.h> > +#include <linux/irq.h> > +#include <linux/module.h> > +#include <linux/mutex.h> > +#include <linux/slab.h> > +#include <linux/unaligned/le_struct.h> > + > +#define MAX_FINGERS 10 > +#define MAX_WIDTH 30 > +#define MAX_PRESSURE 255 > +#define FINGER_EVENT_SZ 6 > + > +/* Registers */ > +#define MMS_MODE_CONTROL 0x01 > +#define MMS_XYRES_HI 0x02 > +#define MMS_XRES_LO 0x03 > +#define MMS_YRES_LO 0x04 > + > +#define MMS_INPUT_EVENT_PKT_SZ 0x0F > +#define MMS_INPUT_EVENT0 0x10 > + > +#define MMS_TSP_REVISION 0xF0 > +#define MMS_HW_REVISION 0xF1 > +#define MMS_COMPAT_GROUP 0xF2 > +#define MMS_FW_VERSION 0xF3 > > > Above registers are same with them of mms114 driver. Hi, thanks, I'll give it a shot. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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