Merge tag 'extcon-next-for-4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/chanwoo/extcon into char-misc-next

Update extcon for 4.12

Detailed description for this pull request:
1. Add new 'extcon-intel-cht-wc.c' driver
- Intel Cherrytrail Whiskey Cove PMIC extcon driver supports
the detection of the charger connectors and the control.

2. Add new extcon API to monitor the all external connectors.
- The extcon consumer might need to monitor the all supported external
connectors from the extcon device. Before, the extcon consumer
should have each notifier_block structure for each external connector.

In order to support the requirement, the extcon adds new
extcon_register_notifier_all() API. The extcon consumer is able
to monitor the state change of all supported external connectors
from the extcon device by using only one notifier_block.

- extcon_(register|unregister)_notifier_all(struct extcon_dev *edev
				struct notifier_block *nb)
- devm_extcon_(register|unregister)_notifier_all(struct device *dev,
				struct extcon_dev *edev
				struct notifier_block *nb)

3. Remove porting compatibility of old switch class
- The extcon removes the porting compatibility of old switch class
because there are no any use-case and requirement of switch class.

4. Update the extcon drivers and Fix the minor issues
- Revert the ACPI gpio interface on the extcon-usb-gpioc.c.
- Fix the issues related to the suspend-to-ram for both extcon-usb-gpio.c
  and extcon-palmas.c.
- Add warning message for extcon-arizona.c when headphone detection is not
  finished.

1 files changed, 16 insertions, 5 deletions

diff --git a/include/linux/extcon.h b/include/linux/extcon.h
index 7010fb01a81a..7e206a9f88db 100644
--- a/include/linux/extcon.h
+++ b/include/linux/extcon.h
@@ -236,11 +236,11 @@ extern int extcon_set_property_capability(struct extcon_dev *edev,
 				unsigned int id, unsigned int prop);
 
 /*
- * Following APIs are to monitor every action of a notifier.
- * Registrar gets notified for every external port of a connection device.
- * Probably this could be used to debug an action of notifier; however,
- * we do not recommend to use this for normal 'notifiee' device drivers who
- * want to be notified by a specific external port of the notifier.
+ * Following APIs are to monitor the status change of the external connectors.
+ * extcon_register_notifier(*edev, id, *nb) : Register a notifier block
+ *			for specific external connector of the extcon.
+ * extcon_register_notifier_all(*edev, *nb) : Register a notifier block
+ *			for all supported external connectors of the extcon.
  */
 extern int extcon_register_notifier(struct extcon_dev *edev, unsigned int id,
 				    struct notifier_block *nb);
@@ -253,6 +253,17 @@ extern void devm_extcon_unregister_notifier(struct device *dev,
 				struct extcon_dev *edev, unsigned int id,
 				struct notifier_block *nb);
 
+extern int extcon_register_notifier_all(struct extcon_dev *edev,
+				struct notifier_block *nb);
+extern int extcon_unregister_notifier_all(struct extcon_dev *edev,
+				struct notifier_block *nb);
+extern int devm_extcon_register_notifier_all(struct device *dev,
+				struct extcon_dev *edev,
+				struct notifier_block *nb);
+extern void devm_extcon_unregister_notifier_all(struct device *dev,
+				struct extcon_dev *edev,
+				struct notifier_block *nb);
+
 /*
  * Following API get the extcon device from devicetree.
  * This function use phandle of devicetree to get extcon device directly.