linux-toradex.git/drivers/extcon/extcon-max8997.c, branch v4.20

extcon: maxim: Add SPDX license identifiers

2018-08-28T02:13:20+00:00

Replace GPL v2.0+ license statements with SPDX license identifiers.

Signed-off-by: Krzysztof Kozlowski 
Signed-off-by: Chanwoo Choi

extcon: max8997: Delete unneeded initialization in max8997_muic_set_path()

2017-11-27T01:23:47+00:00

The variable "ret" will be set to an appropriate value a bit later.
Thus this patch omits the explicit initialization at the beginning.

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

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

2017-10-23T05:07:58+00:00

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: Use the extcon_set_state_sync() instead of deprecated functions

2016-09-13T02:26:26+00:00

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: Add the EXTCON_CHG_USB_SDP to support SDP charing port

2016-01-25T04:16:53+00:00

This patch adds the new EXTCON_CHG_USB_SDP connector to support SDP (Standard
Downstream Port) USB charging port. The commit 11eecf910bd8 ("extcon: Modify
the id and name of external connector") add the new EXTCON_CHG_USB_SDP
connector which support the both data transfer and usb charging at the same
time.

Signed-off-by: Chanwoo Choi 
Reviewed-by: Krzysztof Kozlowski

extcon: Modify the id and name of external connector

2015-10-15T23:30:09+00:00

This patch modifies the id and name of external connector with the
additional prefix to clarify both attribute and meaning of external
connector as following:
- EXTCON_CHG_* mean the charger connector.
- EXTCON_JACK_* mean the jack connector.
- EXTCON_DISP_* mean the display port connector.

Following table show the new name of external connector with old name:
--------------------------------------------------
Old extcon name         | New extcon name        |
--------------------------------------------------
EXTCON_TA               | EXTCON_CHG_USB_DCP     |
EXTCON_CHARGE_DOWNSTREAM| EXTCON_CHG_USB_CDP     |
EXTCON_FAST_CHARGER     | EXTCON_CHG_USB_FAST    |
EXTCON_SLOW_CHARGER     | EXTCON_CHG_USB_SLOW    |
--------------------------------------------------
EXTCON_MICROPHONE       | EXTCON_JACK_MICROPHONE |
EXTCON_HEADPHONE        | EXTCON_JACK_HEADPHONE  |
EXTCON_LINE_IN          | EXTCON_JACK_LINE_IN    |
EXTCON_LINE_OUT         | EXTCON_JACK_LINE_OUT   |
EXTCON_VIDEO_IN         | EXTCON_JACK_VIDEO_IN   |
EXTCON_VIDEO_OUT        | EXTCON_JACK_VIDEO_OUT  |
EXTCON_SPDIF_IN         | EXTCON_JACK_SPDIF_IN   |
EXTCON_SPDIF_OUT        | EXTCON_JACK_SPDIF_OUT  |
--------------------------------------------------
EXTCON_HMDI             | EXTCON_DISP_HDMI       |
EXTCON_MHL              | EXTCON_DISP_MHL        |
EXTCON_DVI              | EXTCON_DISP_DVI        |
EXTCON_VGA              | EXTCON_DISP_VGA        |
--------------------------------------------------

And, when altering the name of USB charger connector, EXTCON refers to the
"Battery Charging v1.2 Spec and Adopters Agreement"[1] to use the standard
name of USB charging port as following. Following name of USB charging port
are already used in power_supply subsystem. We chan check it on patch[2].
- EXTCON_CHG_USB_SDP	/* Standard Downstream Port */
- EXTCON_CHG_USB_DCP	/* Dedicated Charging Port */
- EXTCON_CHG_USB_CDP	/* Charging Downstream Port */
- EXTCON_CHG_USB_ACA	/* Accessory Charger Adapter */

[1] www.usb.org/developers/docs/devclass_docs/BCv1.2_070312.zip
[2] commit 85efc8a18ced ("power_supply: Add types for USB chargers")

Signed-off-by: Chanwoo Choi 
[ckeepax: For the Arizona changes]
Acked-by: Charles Keepax 
Reviewed-by: Roger Quadros

extcon: Redefine the unique id of supported external connectors without 'enum extcon' type

2015-06-13T00:01:42+00:00

This patch just redefine the unique id of supported external connectors without
'enum extcon' type. Because unique id would be used on devictree file(*.dts) to
indicate the specific external connectors like key number of input framework.
So, I have the plan to move this definitions to following header file which
includes the unique id of supported external connectors.
- include/dt-bindings/extcon/extcon.h

Fixes: 2a9de9c0f08d ("extcon: Use the unique id for external connector instead of string")
Signed-off-by: Chanwoo Choi 
Signed-off-by: Greg Kroah-Hartman

extcon: Use the unique id for external connector instead of string

2015-05-22T09:58:44+00:00

This patch uses the unique id to identify the type of external connector instead
of string name. The string name have the many potential issues. So, this patch
defines the 'extcon' enumeration which includes all supported external connector
on EXTCON subsystem. If new external connector is necessary, the unique id of
new connector have to be added in 'extcon' enumeration. There are current
supported external connector in 'enum extcon' as following:

enum extcon {
	EXTCON_NONE		= 0x0,

	/* USB external connector */
	EXTCON_USB		= 0x1,
	EXTCON_USB_HOST		= 0x2,

	/* Charger external connector */
	EXTCON_TA		= 0x10,
	EXTCON_FAST_CHARGER	= 0x11,
	EXTCON_SLOW_CHARGER	= 0x12,
	EXTCON_CHARGE_DOWNSTREAM = 0x13,

	/* Audio and video external connector */
	EXTCON_LINE_IN		= 0x20,
	EXTCON_LINE_OUT		= 0x21,
	EXTCON_MICROPHONE	= 0x22,
	EXTCON_HEADPHONE	= 0x23,

	EXTCON_HDMI		= 0x30,
	EXTCON_MHL		= 0x31,
	EXTCON_DVI		= 0x32,
	EXTCON_VGA		= 0x33,
	EXTCON_SPDIF_IN		= 0x34,
	EXTCON_SPDIF_OUT	= 0x35,
	EXTCON_VIDEO_IN		= 0x36,
	EXTCON_VIDEO_OUT	= 0x37,

	/* Miscellaneous external connector */
	EXTCON_DOCK		= 0x50,
	EXTCON_JIG		= 0x51,
	EXTCON_MECHANICAL	= 0x52,

	EXTCON_END,
};

For example in extcon-arizona.c:
To use unique id removes the potential issue about handling
the inconsistent name of external connector with string.
- Previously, use the string to register the type of arizona jack connector
static const char *arizona_cable[] = {
	"Mechanical",
	"Microphone",
	"Headphone",
	"Line-out",
};
- Newly, use the unique id to register the type of arizona jack connector
static const enum extcon arizona_cable[] = {
	EXTCON_MECHANICAL,
	EXTCON_MICROPHONE,
	EXTCON_HEADPHONE,
	EXTCON_LINE_OUT,

	EXTCON_NONE,
};

And this patch modify the prototype of extcon_{get|set}_cable_state_() which
uses the 'enum extcon id' instead of 'cable_index'. Because although one more
extcon drivers support USB cable, each extcon driver might has the differnt
'cable_index' for USB cable. All extcon drivers can use the unique id number
for same external connector with modified extcon_{get|set}_cable_state_().

- Previously, use 'cable_index' on these functions:
extcon_get_cable_state_(struct extcon_dev*, int cable_index)
extcon_set_cable_state_(struct extcon_dev*, int cable_index, bool state)

-Newly, use 'enum extcon id' on these functions:
extcon_get_cable_state_(struct extcon_dev*, enum extcon id)
extcon_set_cable_state_(struct extcon_dev*, enum extcon id, bool state)

Cc: Arnd Bergmann 
Cc: Felipe Balbi 
Signed-off-by: Chanwoo Choi 
Acked-by: Roger Quadros 
Acked-by: Charles Keepax 
Acked-by: Ramakrishna Pallala 
Reviewed-by: Krzysztof Kozlowski 
[arnd: Report the build break about drivers/usb/phy/phy-tahvo.c after using the
unique id for external connector insteadf of string]
Reported-by: Arnd Bergmann 
[dan.carpenter: Report the build warning of extcon_{set|get}_cable_state_()]
Reported-by: Dan Carpenter

extcon: Remove the optional name of extcon device

2015-05-19T07:39:06+00:00

This patch removes the optional name of extcon device. Instead,
extcon_dev_register() set the device name as 'extcon[number]' naming pattern.
- /sys/class/extcon/[hardcoded device name] -> /sys/class/extcon/extcon[number]

Signed-off-by: Chanwoo Choi 
Acked-by: Krzysztof Kozlowski 
Cc: MyungJoo Ham 
Cc: Charles Keepax 
Cc: Graeme Gregory 
Cc: Kishon Vijay Abraham I 
Cc: Krzysztof Kozlowski 
Cc: Jaewon Kim

extcon: Unify the dock device names on max8997/77693

2015-05-19T07:39:06+00:00

This patch change the name of various dock devices as 'DOCK' because the name of
various dock devices have not the standard naming rules. The name of dock devices
include the differenct word but it is ambiguous and never important information
on user-space aspect. This patch unifies the name of dock devices as following:
- Dock-Smart   -->|--> DOCK
- Dock-Desk    -->|
- Dock-Audio   -->|
- Dock-Card    -->|

Signed-off-by: Chanwoo Choi 
Reviewed-by: Krzysztof Kozlowski