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WM97xx touchscreen drivers

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[view original message]
From: Mark Brown
Subject: WM97xx touchscreen drivers
Date: Tuesday, April 1, 2008 - 3:28 am

This patch series adds support for the touchscreen controllers found in
WM97xx devices.  This revision of the series fixes some races when
closing an active device and fixes a shadowed variable.

This patch series is also available in the git repository at:

  git://opensource.wolfsonmicro.com/linux-2.6-touch upstream

Mark Brown (6):
      Core driver for WM97xx touchscreens
      Add chip driver for WM9705 touchscreen
      Add chip driver for WM9712 touchscreen
      Add chip driver for WM9713 touchscreen
      Driver for WM97xx touchscreens in streaming mode on Mainstone
      Build system and MAINTAINERS entry for WM97xx touchscreen drivers

 MAINTAINERS                                  |   10 +
 drivers/input/touchscreen/Kconfig            |   52 ++
 drivers/input/touchscreen/Makefile           |    7 +
 drivers/input/touchscreen/mainstone-wm97xx.c |  300 ++++++++++
 drivers/input/touchscreen/wm9705.c           |  352 ++++++++++++
 drivers/input/touchscreen/wm9712.c           |  461 +++++++++++++++
 drivers/input/touchscreen/wm9713.c           |  459 +++++++++++++++
 drivers/input/touchscreen/wm97xx-core.c      |  786 ++++++++++++++++++++++++++
 include/linux/wm97xx.h                       |  311 ++++++++++
 9 files changed, 2738 insertions(+), 0 deletions(-)
 create mode 100644 drivers/input/touchscreen/mainstone-wm97xx.c
 create mode 100644 drivers/input/touchscreen/wm9705.c
 create mode 100644 drivers/input/touchscreen/wm9712.c
 create mode 100644 drivers/input/touchscreen/wm9713.c
 create mode 100644 drivers/input/touchscreen/wm97xx-core.c
 create mode 100644 include/linux/wm97xx.h
--


[ message continues ]
[view original message]
From: Mark Brown
Subject: [PATCH 1/6] Core driver for WM97xx touchscreens
Date: Tuesday, April 1, 2008 - 3:36 am

This patch series adds support for the touchscreen controllers provided
by Wolfson Microelectronics WM97xx series chips in both polled and
streaming modes.

These drivers have been maintained out of tree since 2003.  During that
time the driver the primary maintainer was Liam Girdwood and a number of
people have made contributions including Dmitry Baryshkov, Stanley Cai,
Rodolfo Giometti, Russell King, Marc Kleine-Budde, Ian Molton, Vincent
Sanders, Andrew Zabolotny, Graeme Gregory, Mike Arthur and myself.
Apologies to anyone I have omitted.

Signed-off-by: Liam Girdwood <liam.girdwood@wolfsonmicro.com>
Signed-off-by: Graeme Gregory <gg@opensource.wolfsonmicro.com>
Signed-off-by: Mike Arthur <mike.arthur@wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Dmitry Baryshkov <dbaryshkov@gmail.com>
Cc: Stanley Cai <stanley.cai@intel.com>
Cc: Hans-Christian Egtvedt <hcegtvedt@atmel.com>
Cc: Rodolfo Giometti <giometti@enneenne.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Pete MacKay <linux01@architechnical.net>
Cc: Marc Kleine-Budde <mkl@pengutronix.de>
Cc: Ian Molton <spyro@f2s.com>
Cc: Vincent Sanders <vince@kyllikki.org>
Cc: Andrew Zabolotny <zap@homelink.ru>
---
 drivers/input/touchscreen/wm97xx-core.c |  786 +++++++++++++++++++++++++++++++
 include/linux/wm97xx.h                  |  311 ++++++++++++
 2 files changed, 1097 insertions(+), 0 deletions(-)
 create mode 100644 drivers/input/touchscreen/wm97xx-core.c
 create mode 100644 include/linux/wm97xx.h

diff --git a/drivers/input/touchscreen/wm97xx-core.c b/drivers/input/touchscreen/wm97xx-core.c
new file mode 100644
index 0000000..fb265b7
--- /dev/null
+++ b/drivers/input/touchscreen/wm97xx-core.c
@@ -0,0 +1,786 @@
+/*
+ * wm97xx-core.c  --  Touch screen driver core for Wolfson WM9705, WM9712
+ *                    and WM9713 AC97 Codecs.
+ *
+ * Copyright 2003, 2004, 2005, 2006, 2007, 2008 Wolfson Microelectronics PLC.
+ * Author: Liam Girdwood
+ *         ...
[ message continues ]
[view original message]
From: Mark Brown
Subject: [PATCH 2/6] Add chip driver for WM9705 touchscreen
Date: Tuesday, April 1, 2008 - 3:36 am

Signed-off-by: Liam Girdwood <liam.girdwood@wolfsonmicro.com>
Signed-off-by: Graeme Gregory <gg@opensource.wolfsonmicro.com>
Signed-off-by: Mike Arthur <mike.arthur@wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Dmitry Baryshkov <dbaryshkov@gmail.com>
Cc: Stanley Cai <stanley.cai@intel.com>
Cc: Hans-Christian Egtvedt <hcegtvedt@atmel.com>
Cc: Rodolfo Giometti <giometti@enneenne.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Marc Kleine-Budde <mkl@pengutronix.de>
Cc: Pete MacKay <linux01@architechnical.net>
Cc: Ian Molton <spyro@f2s.com>
Cc: Vince Sanders <vince@kyllikki.org>
Cc: Andrew Zabolotny <zap@homelink.ru>
---
 drivers/input/touchscreen/wm9705.c |  352 ++++++++++++++++++++++++++++++++++++
 1 files changed, 352 insertions(+), 0 deletions(-)
 create mode 100644 drivers/input/touchscreen/wm9705.c

diff --git a/drivers/input/touchscreen/wm9705.c b/drivers/input/touchscreen/wm9705.c
new file mode 100644
index 0000000..d4008f9
--- /dev/null
+++ b/drivers/input/touchscreen/wm9705.c
@@ -0,0 +1,352 @@
+/*
+ * wm9705.c  --  Codec driver for Wolfson WM9705 AC97 Codec.
+ *
+ * Copyright 2003, 2004, 2005, 2006, 2007 Wolfson Microelectronics PLC.
+ * Author: Liam Girdwood
+ *         liam.girdwood@wolfsonmicro.com or linux@wolfsonmicro.com
+ * Parts Copyright : Ian Molton <spyro@f2s.com>
+ *                   Andrew Zabolotny <zap@homelink.ru>
+ *                   Russell King <rmk@arm.linux.org.uk>
+ *
+ *  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/module.h>
+#include <linux/moduleparam.h>
+#include <linux/version.h>
+#include <linux/kernel.h>
+#include <linux/input.h>
+#include <linux/delay.h>
+#include <linux/bitops.h>
+#include <linux/wm97xx.h>
+
+#define ...
[ message continues ]
[view original message]
From: Mark Brown
Subject: [PATCH 3/6] Add chip driver for WM9712 touchscreen
Date: Tuesday, April 1, 2008 - 3:36 am

Signed-off-by: Liam Girdwood <liam.girdwood@wolfsonmicro.com>
Signed-off-by: Graeme Gregory <gg@opensource.wolfsonmicro.com>
Signed-off-by: Mike Arthur <mike.arthur@wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Lars Munch <lars@segv.dk>
Cc: Dmitry Baryshkov <dbaryshkov@gmail.com>
Cc: Stanley Cai <stanley.cai@intel.com>
Cc: Hans-Christian Egtvedt <hcegtvedt@atmel.com>
Cc: Rodolfo Giometti <giometti@enneenne.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Marc Kleine-Budde <mkl@pengutronix.de>
Cc: Pete MacKay <linux01@architechnical.net>
Cc: Ian Molton <spyro@f2s.com>
Cc: Vince Sanders <vince@kyllikki.org>
Cc: Andrew Zabolotny <zap@homelink.ru>
---
 drivers/input/touchscreen/wm9712.c |  461 ++++++++++++++++++++++++++++++++++++
 1 files changed, 461 insertions(+), 0 deletions(-)
 create mode 100644 drivers/input/touchscreen/wm9712.c

diff --git a/drivers/input/touchscreen/wm9712.c b/drivers/input/touchscreen/wm9712.c
new file mode 100644
index 0000000..ecf3c1d
--- /dev/null
+++ b/drivers/input/touchscreen/wm9712.c
@@ -0,0 +1,461 @@
+/*
+ * wm9712.c  --  Codec driver for Wolfson WM9712 AC97 Codecs.
+ *
+ * Copyright 2003, 2004, 2005, 2006, 2007 Wolfson Microelectronics PLC.
+ * Author: Liam Girdwood
+ *         liam.girdwood@wolfsonmicro.com or linux@wolfsonmicro.com
+ * Parts Copyright : Ian Molton <spyro@f2s.com>
+ *                   Andrew Zabolotny <zap@homelink.ru>
+ *                   Russell King <rmk@arm.linux.org.uk>
+ *
+ *  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/module.h>
+#include <linux/moduleparam.h>
+#include <linux/version.h>
+#include <linux/kernel.h>
+#include <linux/input.h>
+#include <linux/delay.h>
+#include <linux/bitops.h>
+#include ...
[ message continues ]
[view original message]
From: Mark Brown
Subject: [PATCH 4/6] Add chip driver for WM9713 touchscreen
Date: Tuesday, April 1, 2008 - 3:36 am

Signed-off-by: Liam Girdwood <liam.girdwood@wolfsonmicro.com>
Signed-off-by: Graeme Gregory <gg@opensource.wolfsonmicro.com>
Signed-off-by: Mike Arthur <mike.arthur@wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Lars Munch <lars@segv.dk>
Cc: Dmitry Baryshkov <dbaryshkov@gmail.com>
Cc: Stanley Cai <stanley.cai@intel.com>
Cc: Hans-Christian Egtvedt <hcegtvedt@atmel.com>
Cc: Rodolfo Giometti <giometti@enneenne.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Marc Kleine-Budde <mkl@pengutronix.de>
Cc: Pete MacKay <linux01@architechnical.net>
Cc: Ian Molton <spyro@f2s.com>
Cc: Vince Sanders <vince@kyllikki.org>
Cc: Andrew Zabolotny <zap@homelink.ru>
---
 drivers/input/touchscreen/wm9713.c |  459 ++++++++++++++++++++++++++++++++++++
 1 files changed, 459 insertions(+), 0 deletions(-)
 create mode 100644 drivers/input/touchscreen/wm9713.c

diff --git a/drivers/input/touchscreen/wm9713.c b/drivers/input/touchscreen/wm9713.c
new file mode 100644
index 0000000..0508bda
--- /dev/null
+++ b/drivers/input/touchscreen/wm9713.c
@@ -0,0 +1,459 @@
+/*
+ * wm9713.c  --  Codec touch driver for Wolfson WM9713 AC97 Codec.
+ *
+ * Copyright 2003, 2004, 2005, 2006, 2007, 2008 Wolfson Microelectronics PLC.
+ * Author: Liam Girdwood
+ *         liam.girdwood@wolfsonmicro.com or linux@wolfsonmicro.com
+ * Parts Copyright : Ian Molton <spyro@f2s.com>
+ *                   Andrew Zabolotny <zap@homelink.ru>
+ *                   Russell King <rmk@arm.linux.org.uk>
+ *
+ *  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/module.h>
+#include <linux/moduleparam.h>
+#include <linux/version.h>
+#include <linux/kernel.h>
+#include <linux/input.h>
+#include <linux/delay.h>
+#include <linux/bitops.h>
+#include ...
[ message continues ]
[view original message]
From: Mark Brown
Subject: [PATCH 5/6] Driver for WM97xx touchscreens in streaming mode on Mainstone
Date: Tuesday, April 1, 2008 - 3:36 am

Signed-off-by: Liam Girdwood <liam.girdwood@wolfsonmicro.com>
Signed-off-by: Graeme Gregory <gg@opensource.wolfsonmicro.com>
Signed-off-by: Mike Arthur <mike.arthur@wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Dmitry Baryshkov <dbaryshkov@gmail.com>
Cc: Stanley Cai <stanley.cai@intel.com>
Cc: Hans-Christian Egtvedt <hcegtvedt@atmel.com>
Cc: Rodolfo Giometti <giometti@enneenne.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Marc Kleine-Budde <mkl@pengutronix.de>
Cc: Pete MacKay <linux01@architechnical.net>
Cc: Ian Molton <spyro@f2s.com>
Cc: Vince Sanders <vince@kyllikki.org>
Cc: Andrew Zabolotny <zap@homelink.ru>
---
 drivers/input/touchscreen/mainstone-wm97xx.c |  300 ++++++++++++++++++++++++++
 1 files changed, 300 insertions(+), 0 deletions(-)
 create mode 100644 drivers/input/touchscreen/mainstone-wm97xx.c

diff --git a/drivers/input/touchscreen/mainstone-wm97xx.c b/drivers/input/touchscreen/mainstone-wm97xx.c
new file mode 100644
index 0000000..bd847cd
--- /dev/null
+++ b/drivers/input/touchscreen/mainstone-wm97xx.c
@@ -0,0 +1,300 @@
+/*
+ * mainstone-wm97xx.c  --  Mainstone Continuous Touch screen driver for
+ *                         Wolfson WM97xx AC97 Codecs.
+ *
+ * Copyright 2004, 2007 Wolfson Microelectronics PLC.
+ * Author: Liam Girdwood
+ *         liam.girdwood@wolfsonmicro.com or linux@wolfsonmicro.com
+ * Parts Copyright : Ian Molton <spyro@f2s.com>
+ *                   Andrew Zabolotny <zap@homelink.ru>
+ *
+ *  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.
+ *
+ * Notes:
+ *     This is a wm97xx extended touch driver to capture touch
+ *     data in a continuous manner on the Intel XScale archictecture
+ *
+ *  Features:
+ *       - codecs supported:- WM9705, WM9712, WM9713
+ *       - ...
[ message continues ]
[view original message]
From: Mark Brown
Subject: [PATCH 6/6] Build system and MAINTAINERS entry for WM97xx touchscreen drivers
Date: Tuesday, April 1, 2008 - 3:36 am

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <liam.girdwood@wolfsonmicro.com>
---
 MAINTAINERS                        |   10 +++++++
 drivers/input/touchscreen/Kconfig  |   52 ++++++++++++++++++++++++++++++++++++
 drivers/input/touchscreen/Makefile |    7 +++++
 3 files changed, 69 insertions(+), 0 deletions(-)

diff --git a/MAINTAINERS b/MAINTAINERS
index 6d628fb..f3ba69a 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -4337,6 +4337,16 @@ L:	linux-wireless@vger.kernel.org
 W:	http://oops.ghostprotocols.net:81/blog
 S:	Maintained
 
+WM97XX TOUCHSCREEN DRIVERS
+P:	Mark Brown
+M:	broonie@opensource.wolfsonmicro.com
+P:	Liam Girdwood
+M:	liam.girdwood@wolfsonmicro.com
+L:	linux-input@vger.kernel.org
+T:	git git://opensource.wolfsonmicro.com/linux-2.6-touch
+W:	http://opensource.wolfsonmicro.com/node/7
+S:	Supported
+
 X.25 NETWORK LAYER
 P:	Henner Eisen
 M:	eis@baty.hanse.de
diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index 90e8e92..0be05a2 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -158,6 +158,58 @@ config TOUCHSCREEN_TOUCHRIGHT
 	  To compile this driver as a module, choose M here: the
 	  module will be called touchright.
 
+config TOUCHSCREEN_WM97XX
+	tristate "Support for WM97xx AC97 touchscreen controllers"
+	depends on AC97_BUS
+
+config TOUCHSCREEN_WM9705
+	bool "WM9705 Touchscreen interface support"
+	depends on TOUCHSCREEN_WM97XX
+	help
+	  Say Y here if you have a Wolfson Microelectronics WM9705 touchscreen
+	  controller connected to your system.
+
+	  If unsure, say N.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called wm9705.
+
+config TOUCHSCREEN_WM9712
+	bool "WM9712 Touchscreen interface support"
+	depends on TOUCHSCREEN_WM97XX
+	help
+	  Say Y here if you have a Wolfson Microelectronics WM9712 touchscreen
+	  controller connected to your system.
+
+	  If unsure, say ...
[ message continues ]
[view original message]
From: Dmitry Torokhov
Subject: Re: [PATCH 6/6] Build system and MAINTAINERS entry for WM97xx touchscreen drivers
Date: Tuesday, April 1, 2008 - 10:04 pm

Hi Mark,


This is not correct. The chip drivers are compiled into wm97xx-ts
module, there is no wm9705 module. I fixed it on my side and
applied the series to wm97xx branch of my input tree. I also moved
changes to Makefile/Kconfig to the appropriate patches instead of
doing bulk update as a separate patch. Please take a look and let
me know if you see anything wrong.

Thank you.


-- 
Dmitry
--


[ message continues ]
[view original message]
From: Mark Brown
Subject: Re: [PATCH 6/6] Build system and MAINTAINERS entry for WM97xx touchscreen drivers
Date: Wednesday, April 2, 2008 - 3:37 am

Everything looks good, thanks.

The build infrastructure was split off to ensure that the tree was
buildable with the partially applied series - the core is obviously
non-functional without the individual chip drivers.  In the past it
wouldn't build with missing chip drivers but that shouldn't be the case
any more.
--


[ message continues ]
[view original message]
From: Dmitry
Subject: Re: WM97xx touchscreen drivers
Date: Tuesday, April 1, 2008 - 4:42 am

Hi,





-- 
With best wishes
Dmitry
--


[ message continues ]
[view original message]
From: Mark Brown
Subject: Re: WM97xx touchscreen drivers
Date: Tuesday, April 1, 2008 - 5:20 am

Unfortunately this gets mostly lost due to squashing the changes down (I
don't immediately resend due to the amount of noise created by
repeatedly sending the series.

This should be approximately it.

Lars Munch (1):
      wm971x: Check for pen up on both axes

Mark Brown (5):
      wm9712: Return 0 rather than RC_PENUP on error
      wm9713: Return 0 rather than RC_PENUP on error
      wm9713: Fix shadowed variable name
      wm97xx-core: Balance enable/disable interrupt calls
      wm97xx-core: Disable interrupts on the chip prior to freeing IRQ

For what it's worth you can track the changes in the dev branch of

   git://opensource.wolfsonmicro.com/linux-2.6-touch

and via gitweb at:

   http://opensource.wolfsonmicro.com/cgi-bin/gitweb.cgi?p=linux-2.6-touch.git;a=log;h=dev

This should all get a lot easier once the driver has been merged...
--


[ message continues ]
[view original message]
From: Andrew Morton
Subject: Re: WM97xx touchscreen drivers
Date: Tuesday, April 1, 2008 - 2:34 pm

On Tue, 1 Apr 2008 11:28:25 +0100

I added that git tree to the -mm lineup.
--


[ message continues ]
Previous thread: [RFC][patch 0/11][CFQ-cgroup]Yet another I/O bandwidth controlling subsystem for CGroups based on CFQ by Satoshi UCHIDA on Tuesday, April 1, 2008 - 2:22 am. (49 messages)

Next thread: [PATCH 1/2] Customize sched domain via cpuset by Hidetoshi Seto on Tuesday, April 1, 2008 - 4:26 am. (19 messages)