kernel/drivers/extcon/extcon-usb-gpio.c, branch linux-5.1.y

extcon: Split out extcon header file for consumer and provider device

2017-10-23T05:07:58Z

The extcon has two type of extcon devices as following. - 'extcon provider deivce' adds new extcon device and detect the state/properties of external connector. Also, it notifies the state/properties to the extcon consumer device. - 'extcon consumer device' gets the change state/properties from extcon provider device. Prior to that, include/linux/extcon.h contains all exported API for both provider and consumer device driver. To clarify the meaning of header file and to remove the wrong use-case on consumer device, this patch separates into extcon.h and extcon-provider.h. [Description for include/linux/{extcon.h|extcon-provider.h}] - extcon.h includes the extcon API and data structure for extcon consumer device driver. This header file contains the following APIs: : Register/unregister the notifier to catch the change of extcon device : Get the extcon device instance : Get the extcon device name : Get the state of each external connector : Get the property value of each external connector : Get the property capability of each external connector - extcon-provider.h includes the extcon API and data structure for extcon provider device driver. This header file contains the following APIs: : Include 'include/linux/extcon.h' : Allocate the memory for extcon device instance : Register/unregister extcon device : Set the state of each external connector : Set the property value of each external connector : Set the property capability of each external connector Signed-off-by: Chanwoo Choi Acked-by: Sebastian Reichel Acked-by: Chen-Yu Tsai Acked-by: Charles Keepax Acked-by: Lee Jones Acked-by: Felipe Balbi Acked-by: Yoshihiro Shimoda Acked-by: Kishon Vijay Abraham I

extcon: usb-gpio: Don't miss event during suspend/resume

2017-04-06T01:55:21Z

We must check for ID/VBUS changes during resume irrespective of whether our device wakeup is enabled or not. Without this we seem to be missing ID/VBUS events after system suspend/resume. Signed-off-by: Roger Quadros Signed-off-by: Chanwoo Choi

extcon: usb-gpio: Do not enable USB as wakeup source by default

2017-04-06T01:55:20Z

Whether the USB port as a wakeup source should be determined by user, but not enabled by default. Signed-off-by: Peter Chen Signed-off-by: Chanwoo Choi

Revert "extcon: usb-gpio: add support for ACPI gpio interface"

2017-03-27T04:17:41Z

The commit 942c7924a51e introduced a check for ACPI handle for the device that never appears on any ACPI-enabled platform so far. It seems a confusion with extcon-intel-int3496 which does support ACPI-enabled platforms. Revert commit 942c7924a51e to avoid any confusion in the future. Signed-off-by: Andy Shevchenko Signed-off-by: Chanwoo Choi

extcon: usb-gpio: Add pinctrl operation during system PM

2017-01-09T01:04:12Z

At some systems, the pinctrl setting will be lost or needs to set as "sleep" state to save power consumption. So, we need to configure pinctrl as "sleep" state when system enters suspend, and as "default" state after system resumes. In this way, the pinctrl value can be recovered as "default" state after resuming. Signed-off-by: Peter Chen Signed-off-by: Chanwoo Choi

extcon: usb-gpio: Add VBUS detection support

2016-11-20T12:22:39Z

Driver can now work with both ID and VBUS pins or either one of them. There can be the following 3 cases 1) Both ID and VBUS GPIOs are available: ID = LOW -> USB_HOST active, USB inactive ID = HIGH -> USB_HOST inactive, USB state is same as VBUS. 2) Only ID GPIO is available: ID = LOW -> USB_HOST active, USB inactive ID = HIGH -> USB_HOST inactive, USB active 3) Only VBUS GPIO is available: VBUS = LOW -> USB_HOST inactive, USB inactive VBUS = HIGH -> USB_HOST inactive, USB active Signed-off-by: Roger Quadros Reviewed-by: Peter Chen Signed-off-by: Chanwoo Choi

extcon: Use the extcon_set_state_sync() instead of deprecated functions

2016-09-13T02:26:26Z

This patch alters the renamed extcon API to set the state of the external connectors instead of deprecated extcon_set_cable_state_(). Because the patch[1] modifies the function name to maintain the function naming pattern. - extcon_set_cable_state_() -> extcon_set_state_sync() - extcon_get_cable_state_() -> extcon_get_state() [1] https://lkml.org/lkml/2016/8/4/729 - extcon: Rename the extcon_set/get_state() to maintain the function naming pattern Signed-off-by: Chanwoo Choi Acked-by: Charles Keepax Acked-by: Roger Quadros

extcon: usb-gpio: add support for ACPI gpio interface

2016-06-21T05:09:53Z

GPIO resource could be retrieved through APCI as well. Signed-off-by: Lu Baolu Reviewed-by: Felipe Balbi Acked-by: Chanwoo Choi Signed-off-by: Chanwoo Choi

extcon: usb-gpio: add device binding for platform device

2016-06-21T05:09:53Z

This is needed to handle the GPIO connected USB ID pin found on Intel Baytrail devices. Signed-off-by: Lu Baolu Reviewed-by: Felipe Balbi Acked-by: Chanwoo Choi Signed-off-by: Chanwoo Choi

extcon: usb-gpio: Don't miss event during suspend/resume

2016-06-21T05:09:53Z

Pin state might have changed during suspend/resume while our interrupts were disabled and if device doesn't support wakeup. Scan for change during resume for such case. Signed-off-by: Roger Quadros Signed-off-by: Chanwoo Choi