linux-toradex.git/drivers/extcon/extcon_class.c, branch v3.6-rc1

Merge v3.5-rc5 into driver-core-next

2012-07-05T15:25:34+00:00

This picks up the big printk fixes, and resolves a merge issue with:
	drivers/extcon/extcon_gpio.c

Signed-off-by: Greg Kroah-Hartman

Extcon: Don't try to create duplicate link names

2012-06-15T00:20:09+00:00

We can't create a link from the device to the compatibility switch class
since we already create a link from the device to to the extcon class
object and we try to use the same name for both links. This causes a loud
complaint from sysfs on boot.

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

Extcon: Staticise extcon_class

2012-06-15T00:15:25+00:00

It's not referenced outside the core file.

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

extcon: Add EXTCON_MECHANICAL cable type for physical presence

2012-05-04T23:25:29+00:00

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

Extcon: Notify changed state for only one cable to notifee

2012-04-30T02:03:49+00:00

This patch inform the state of only one cable instead of previous data
including the state of 32 cables to notifee which use
extcon_register_interest()
function to monitor whether the specific cable is attachd or detached.

Signed-off-by: Chanwoo Choi 
Signed-off-by: Myungjoo Ham 
Signed-off-by: Kyungmin Park 
Signed-off-by: Greg Kroah-Hartman

Extcon: check for allocation failure

2012-04-25T18:43:24+00:00

Return -ENOMEM if the kmalloc() fails.

Signed-off-by: Dan Carpenter 
Acked-by: MyungJoo Ham 
Signed-off-by: Greg Kroah-Hartman

Remove "switch" class in drivers/staging/android/switch

2012-04-23T20:24:00+00:00

Because extcon can also be a switch class for legacy userspace (Android)
and is a superset of switch class in drivers/staging/android/switch,
switch class may be removed.

- Remove switch class
- Remove switch class consideration in extcon class

Signed-off-by: MyungJoo Ham 
Signed-off-by: Kyungmin Park 
Signed-off-by: Greg Kroah-Hartman

Extcon: support mutually exclusive relation between cables.

2012-04-20T16:24:03+00:00

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

Extcon: support multiple states at a device.

2012-04-20T16:23:37+00:00

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

Extcon: support notification based on the state changes.

2012-04-20T16:23:09+00:00

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