linux-toradex.git/drivers/extcon/extcon.c, branch v4.13-rc4

extcon: Fix a typo in three comment lines

2017-05-23T09:32:02+00:00

Adjust three words in this description for a function.

Signed-off-by: Markus Elfring 
Signed-off-by: Chanwoo Choi

extcon: Use devm_kcalloc() in extcon_dev_register()

2017-05-23T09:32:02+00:00

A multiplication for the size determination of a memory allocation
indicated that an array data structure should be processed.
Thus use the corresponding function "devm_kcalloc".

Signed-off-by: Markus Elfring 
Signed-off-by: Chanwoo Choi

extcon: Use BIT() macro for the left-shift operation

2017-04-06T02:12:45+00:00

This patch just uses the BIT() macro to make the code simple.

Signed-off-by: Chanwoo Choi

extcon: Remove porting compatibility of swich class

2017-04-06T01:55:24+00:00

This patch removes the porting compatibility for switch class
because there is no any usage and requirement of swich class
over a couple of years.

Signed-off-by: Chanwoo Choi

extcon: Add new extcon_register_notifier_all() to monitor all external connectors

2017-04-04T02:22:42+00:00

The extcon core already provides the extcon_register_notifier() function
in order to register the notifier block which is used to monitor
the state change for the specific external connector such as EXTCON_USB,
EXTCON_USB_HOST and so on. The extcon consumer uses the this function.

The extcon consumer might need to monitor the all supported external
connectors from the extcon device. In this case, The extcon consumer
should have each notifier_block structure for each external connector.

This patch adds the new extcon_register_notifier_all() function
that extcon consumer is able to monitor the state change of all
supported external connectors by using only one notifier_block structure.

- List of new added functions:
int extcon_register_notifier_all(struct extcon_dev *edev,
			struct notifier_block *nb);
int extcon_unregister_notifier_all(struct extcon_dev *edev,
			struct notifier_block *nb);
int devm_extcon_register_notifier_all(struct device *dev,
			struct extcon_dev *edev, struct notifier_block *nb);
void devm_extcon_unregister_notifier_all(struct device *dev,
			struct extcon_dev *edev, struct notifier_block *nb);

Suggested-by: Hans de Goede 
Signed-off-by: Chanwoo Choi 
Tested-by: Hans de Goede 
Acked-by: Hans de Goede

extcon: Modify the name of EXTCON_USB_HOST connector

2017-01-09T01:04:58+00:00

This patch renames the EXTCON_USB_HOST by using '-' char because
the name of all external connector use the '-' char instead of '_' char.
- "USB_HOST" -> "USB-HOST"

Signed-off-by: Chanwoo Choi

extcon: Add new EXTCON_CHG_USB_PD type for USB Power Delivery

2017-01-09T01:04:58+00:00

This patch adds the new EXTCON_CHG_USB_PD for USB PD (Power Delivery)[1].
The USB Power Delivery specification specifies that USB cable provides
the increased power more than 7.5W to device with larger power demand.
The EXTCON_CHG_USB_PD has the EXTCON_TYPE_CHG and EXTCON_TYPE_USB type.

[1] https://en.wikipedia.org/wiki/USB#PD

Signed-off-by: Chanwoo Choi

extcon: Move defintion of struct extcon_dev to driver/extcon directory

2017-01-09T01:04:11+00:00

This patch moves the 'struct extcon_dev' of extcon subsystem
to driver/extcon/extcon.h header file because the struct extcon_dev have to
be handled by extcon API to guarantee the consistency of strcut extcon_dev.
If external drivers are able to touch the struct extcon_dev directly, it might
cause the critical and unknown problem.

Signed-off-by: Chanwoo Choi

extcon: Remove potential problem when calling extcon_register_notifier()

2017-01-09T01:04:11+00:00

This patch removes the potential problem of extcon_register_notifier()
when edev parameter is NULL. When edev is NULL, this function returns
the first extcon device which includes the sepecific external connector
of second paramter. But, it don't guarantee the same operation in all cases.
To remove this confusion and potential problem, this patch fixes it.

Signed-off-by: Chanwoo Choi

extcon: Return error code on failure

2017-01-09T01:04:09+00:00

Function get_zeroed_page() returns a NULL pointer if there is no enough
memory. In function extcon_sync(), it returns 0 if the call to
get_zeroed_page() fails. The return value 0 indicates success in the
context, which is incosistent with the execution status. This patch
fixes the bug by returning -ENOMEM.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=188611

Signed-off-by: Pan Bian 
Signed-off-by: Chanwoo Choi