linux-kernel - [PATCH v2 0/3] Add Generic USB VBUS/ID detection via GPIO using extcon

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Date:	Wed, 28 Aug 2013 19:29:09 +0530
From:	George Cherian <george.cherian@...com>
To:	<balbi@...com>, <myungjoo.ham@...sung.com>, <cw00.choi@...sung.com>
CC:	<linux-doc@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<devicetree@...r.kernel.org>, <grant.likely@...aro.org>,
	<rob@...dley.net>, <ian.campbell@...rix.com>,
	<swarren@...dotorg.org>, <mark.rutland@....com>,
	<pawel.moll@....com>, <rob.herring@...xeda.com>,
	<linux-omap@...r.kernel.org>, <linux-usb@...r.kernel.org>,
	<bcousson@...libre.com>, <davidb@...eaurora.org>, <arnd@...db.de>,
	<swarren@...dia.com>, <popcornmix@...il.com>,
	George Cherian <george.cherian@...com>
Subject: [PATCH v2 0/3] Add Generic USB VBUS/ID detection via GPIO using extcon

Hi,

These patches add generic support for USB VBUS/ID pin detection using extcon framework. 
The USB ID pin on DRA7xx is connected via the gpio expander pcf8575. 
The interrupt line of the same is connected to the gpio 11 of bank 6. 
The following driver relies on  the  gpio interrupt to notify the actual 
ID pin values by which the dwc3 driver determines the HOST/Peripheral roles.


These patches are on top of following merges.
v3.11-rc3 dra7 baseport tree [1] , with balbi/next ,control-usb multi instance support [2],
chanwoo/extcon-next, roger's patches for USB host adaptation[3],Laurent Pinchart's patch to 
Enable pcf857x GPIO expander for Device Tree[4] and pcf857x cleanup patch [5].

Patches are available at 
extcon_gpio_usbvid
in git tree
git://git.ti.com/~georgecherian/ti-linux-kernel/georgec-connectivity-linux-feature-tree.git 

[1] - dra7 base tree
	https://github.com/lokeshvutla/linux/tree/dra7-3.11-rc3-base
[2] - multiple control-usb instances
	https://github.com/rogerq/linux/tree/usb-control-module
[3] - [PATCH 0/4] ARM: DRA7-evm: USB host adaptation
	https://lkml.org/lkml/2013/8/1/335
[4] - [PATCH v5] gpio: pcf857x: Add OF support 
 	https://lkml.org/lkml/2013/8/27/70
[5] - [PATCH] gpio: pcf857x: cleanup irq_demux_work and use threaded irq
	https://lkml.org/lkml/2013/8/27/207

George Cherian (3):
  extcon: extcon-gpio-usbvid: Generic USB VBUS/ID detection via GPIO
  drivers: Makefile: Extcon is a framework so bump it up
  ARM: dts: dra7-evm: Add extcon nodes for USB ID pin detection

 .../bindings/extcon/extcon-gpio-usbvid.txt         |  20 +++
 arch/arm/boot/dts/dra7-evm.dts                     |  52 +++++-
 drivers/Makefile                                   |   2 +-
 drivers/extcon/Kconfig                             |   7 +-
 drivers/extcon/Makefile                            |   2 +-
 drivers/extcon/extcon-gpio-usbvid.c                | 185 +++++++++++++++++----
 6 files changed, 226 insertions(+), 42 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/extcon/extcon-gpio-usbvid.txt

-- 
1.8.1.4

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