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charger-manager: Add support sysfs entry for charger

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This patch add support sysfs entry for each charger(regulator).
Charger-manager use one or more chargers for charging battery but some
charger isn't necessary on specific scenario. So, if some charger isn't
needed, can disable specific charger through 'externally_control' entry
while system is on state and confirm the information(name, state) of
charger.

The list of added sysfs entry
- /sys/class/power_supply/battery/chargers/charger.[index]/name
  show name of charger(regulator)
- /sys/class/power_supply/battery/chargers/charger.[index]/state
  show either enabled or disabled state of charger
- /sys/class/power_supply/battery/chargers/charger.[index]/externally_control

If 'externally_control' of specific charger is 1, Charger-manager cannot
enable regulator for charging when charger cable is attached and charger
must be maintained with disabled state. If 'externally_control' is zero,
Charger-manager usually can control to enable/disable regulator.

Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
This commit is contained in:
Chanwoo Choi
2012-09-21 18:49:37 +09:00
committed by Anton Vorontsov
parent 8fcfe088e2
commit 3950c7865c
2 changed files with 191 additions and 0 deletions
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19
include/linux/power/charger-manager.h
View File

@@ -109,24 +109,43 @@ struct charger_cable {
* struct charger_regulator
* @regulator_name: the name of regulator for using charger.
* @consumer: the regulator consumer for the charger.
* @externally_control:
* Set if the charger-manager cannot control charger,
* the charger will be maintained with disabled state.
* @cables:
* the array of charger cables to enable/disable charger
* and set current limit according to constratint data of
* struct charger_cable if only charger cable included
* in the array of charger cables is attached/detached.
* @num_cables: the number of charger cables.
* @attr_g: Attribute group for the charger(regulator)
* @attr_name: "name" sysfs entry
* @attr_state: "state" sysfs entry
* @attr_externally_control: "externally_control" sysfs entry
* @attrs: Arrays pointing to attr_name/state/externally_control for attr_g
*/
struct charger_regulator {
/* The name of regulator for charging */
const char *regulator_name;
struct regulator *consumer;
/* charger never on when system is on */
int externally_control;
/*
* Store constraint information related to current limit,
* each cable have different condition for charging.
*/
struct charger_cable *cables;
int num_cables;
struct attribute_group attr_g;
struct device_attribute attr_name;
struct device_attribute attr_state;
struct device_attribute attr_externally_control;
struct attribute *attrs[4];
struct charger_manager *cm;
};
/**