Eric Lee / smarc-ti-linux-kernel

29 Apr, 2014

2 commits

24 Apr, 2014

1 commit

  • 1111244ff   extcon: Add resource-managed extcon register function ... Browse Code »
    2

    Add resource-managed extcon device register function for convenience.
    For example, if a extcon device is attached with new
    devm_extcon_dev_register(), that extcon device is automatically
    unregistered on driver detach.

    Signed-off-by: Sangjung Woo
    [Fix bug about devm_extcon_dev_match/release() and code clean by Chanwoo Choi]
    Signed-off-by: Chanwoo Choi

    Sangjung Woo
     

19 Mar, 2014

1 commit

27 Sep, 2013

3 commits

22 Nov, 2012

1 commit

20 Nov, 2012

1 commit

22 Oct, 2012

1 commit

06 Sep, 2012

1 commit

05 May, 2012

1 commit

  • 0e1507c84   extcon: Add EXTCON_MECHANICAL cable type for physical presence ... Browse Code »

    Some accessory detection mechanisms are able to detect that something is
    physically present in the socket separately to identifying what is present
    in the socket. This information can be useful to applications, for example
    allowing them to indicate that a potentially broken accessory is present,
    so provide a standard way to report it to userspace.

    Signed-off-by: Mark Brown
    Signed-off-by: Greg Kroah-Hartman

    Mark Brown
     

21 Apr, 2012

4 commits

  • bde68e60b   Extcon: support mutually exclusive relation between cables. ... Browse Code »

    There could be cables that t recannot be attaches simulatenously. Extcon
    device drivers may express such information via mutually_exclusive in
    struct extcon_dev.

    For example, for an extcon device with 16 cables (bits 0 to 15 are
    available), if mutually_exclusive = { 0x7, 0xC0, 0x81, 0 }, then, the
    following attachments are prohibitted.
    {0, 1}
    {0, 2}
    {1, 2}
    {6, 7}
    {0, 7}
    and every attachment set that are superset of one of the above.
    For the detail, please refer to linux/include/linux/extcon.h.

    The concept is suggested by NeilBrown

    Signed-off-by: MyungJoo Ham
    Signed-off-by: Kyungmin Park

    --
    Changes from V5:
    - Updated sysfs format
    Signed-off-by: Greg Kroah-Hartman

    MyungJoo Ham
     
  • 806d9dd71   Extcon: support multiple states at a device. ... Browse Code »

    One switch device (e.g., MUIC(MAX8997, MAX77686, ...), and some 30-pin
    devices) may have multiple cables attached. For example, one
    30-pin port may inhabit a USB cable, an HDMI cable, and a mic.
    Thus, one switch device requires multiple state bits each representing
    a type of cable.

    For such purpose, we use the 32bit state variable; thus, up to 32
    different type of cables may be defined for a switch device. The list of
    possible cables is defined by the array of cable names in the switch_dev
    struct given to the class.

    Signed-off-by: Chanwoo Choi
    Signed-off-by: MyungJoo Ham
    Signed-off-by: Kyungmin Park

    --
    Changes from V7
    - Bugfixed in _call_per_cable() (incorrect nb) (Chanwoo Choi)
    - Compiler error in header for !CONFIG_EXTCON (Chanwoo Choi)

    Changes from V5
    - Sysfs style reformed: subdirectory per cable.
    - Updated standard cable names
    - Removed unnecessary printf
    - Bugfixes after testing

    Changes from V4
    - Bugfixes after more testing at Exynos4412 boards with userspace
    processses.

    Changes from V3
    - Bugfixes after more testing at Exynos4412 boards.

    Changes from V2
    - State can be stored by user
    - Documentation updated

    Changes from RFC
    - Switch is renamed to extcon
    - Added kerneldoc comments
    - Added APIs to support "standard" cable names
    - Added helper APIs to support notifier block registration with cable
    name.
    - Regrouped function list in the header file.
    Signed-off-by: Greg Kroah-Hartman

    MyungJoo Ham
     
  • 74c5d09bd   Extcon: support notification based on the state changes. ... Browse Code »

    State changes of extcon devices have been notified via kobjet_uevent.
    This patch adds notifier interfaces in order to allow device drivers to
    get notified easily. Along with notifier interface,
    extcon_get_extcon_dev() function is added so that device drivers may
    discover a extcon_dev easily.

    Signed-off-by: Donggeun Kim
    Signed-off-by: MyungJoo Ham
    Signed-off-by: Kyungmin Park
    Reviewed-by: Mark Brown

    --
    Changes from RFC
    - Renamed switch to extcon
    - Bugfix: extcon_dev_unregister()
    - Bugfix: "edev->dev" is "internal" data.
    - Added kerneldoc comments.
    - Reworded comments.
    Signed-off-by: Greg Kroah-Hartman

    Donggeun Kim
     
  • de55d8716   Extcon (external connector): import Android's switch class and modify. ... Browse Code »

    External connector class (extcon) is based on and an extension of
    Android kernel's switch class located at linux/drivers/switch/.

    This patch provides the before-extension switch class moved to the
    location where the extcon will be located (linux/drivers/extcon/) and
    updates to handle class properly.

    The before-extension class, switch class of Android kernel, commits
    imported are:

    switch: switch class and GPIO drivers. (splitted)
    Author: Mike Lockwood

    switch: Use device_create instead of device_create_drvdata.
    Author: Arve Hjønnevåg

    In this patch, upon the commits of Android kernel, we have added:
    - Relocated and renamed for extcon.
    - Comments, module name, and author information are updated
    - Code clean for successing patches
    - Bugfix: enabling write access without write functions
    - Class/device/sysfs create/remove handling
    - Added comments about uevents
    - Format changes for extcon_dev_register() to have a parent dev.

    Signed-off-by: MyungJoo Ham
    Signed-off-by: Kyungmin Park
    Reviewed-by: Mark Brown

    --
    Changes from v7
    - Compiler error fixed when it is compiled as a module.
    - Removed out-of-date Kconfig entry

    Changes from v6
    - Updated comment/strings
    - Revised "Android-compatible" mode.
    * Automatically activated if CONFIG_ANDROID && !CONFIG_ANDROID_SWITCH
    * Creates /sys/class/switch/*, which is a copy of /sys/class/extcon/*

    Changes from v5
    - Split the patch
    - Style fixes
    - "Android-compatible" mode is enabled by Kconfig option.

    Changes from v2
    - Updated name_show
    - Sysfs entries are handled by class itself.
    - Updated the method to add/remove devices for the class
    - Comments on uevent send
    - Able to become a module
    - Compatible with Android platform

    Changes from RFC
    - Renamed to extcon (external connector) from multistate switch
    - Added a seperated directory (drivers/extcon)
    - Added kerneldoc comments
    - Removed unused variables from extcon_gpio.c
    - Added ABI Documentation.
    Signed-off-by: Greg Kroah-Hartman

    MyungJoo Ham