extcon: allow to get/set related data structure for a specific cable
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
diff --git a/drivers/extcon/extcon-class.c b/drivers/extcon/extcon-class.c
index 60adc04..533d10f 100644
--- a/drivers/extcon/extcon-class.c
+++ b/drivers/extcon/extcon-class.c
@@ -545,6 +545,36 @@
}
EXPORT_SYMBOL_GPL(extcon_unregister_notifier);
+/**
+ * extcon_cable_set_data() - Set the data structure for a cable
+ * @edev: the extcon device
+ * @cable_index: the cable index of the correspondant
+ * @type: type of the data structure
+ * @data:
+ */
+void extcon_cable_set_data(struct extcon_dev *edev, int cable_index,
+ enum extcon_cable_type type,
+ union extcon_cable_data data)
+{
+ edev->cables[cable_index].type = type;
+ edev->cables[cable_index].data = data;
+}
+
+/**
+ * extcon_cable_get_data() - Get the data structure for a cable
+ * @edev: the extcon device
+ * @cable_index: the cable index of the correspondant
+ * @type: type of the data structure
+ * @data: the corresponding data structure (e.g., regulator)
+ */
+void extcon_cable_get_data(struct extcon_dev *edev, int cable_index,
+ enum extcon_cable_type *type,
+ union extcon_cable_data *data)
+{
+ *type = edev->cables[cable_index].type;
+ *data = edev->cables[cable_index].data;
+}
+
static struct device_attribute extcon_attrs[] = {
__ATTR(state, S_IRUGO | S_IWUSR, state_show, state_store),
__ATTR_RO(name),
diff --git a/include/linux/extcon.h b/include/linux/extcon.h
index fcb51c8..e107d32 100644
--- a/include/linux/extcon.h
+++ b/include/linux/extcon.h
@@ -27,6 +27,11 @@
#include <linux/notifier.h>
#include <linux/sysfs.h>
+/* For the cable types */
+#include <linux/regulator/consumer.h>
+#include <linux/power_supply.h>
+#include <linux/power/charger-manager.h>
+
#define SUPPORTED_CABLE_MAX 32
#define CABLE_NAME_MAX 30
@@ -137,6 +142,21 @@
struct device_attribute *d_attrs_muex;
};
+enum extcon_cable_type {
+ EXTCON_CT_NONE = 0,
+ EXTCON_CT_REGULATOR,
+ EXTCON_CT_PSY,
+ EXTCON_CT_CHARGER_MANAGER,
+ /* Please add other related standards when needed */
+};
+
+union extcon_cable_data {
+ struct regualtor *reg; /* EXTCON_CT_REGULATOR */
+ struct power_supply *psy; /* EXTCON_CT_PSY */
+ struct charger_cable *charger; /* EXTCON_CT_CHARGER_MANAGER */
+ /* Please add accordingly with enum extcon_cable_type */
+};
+
/**
* struct extcon_cable - An internal data for each cable of extcon device.
* @edev: The extcon device
@@ -145,6 +165,8 @@
* @attr_name: "name" sysfs entry
* @attr_state: "state" sysfs entry
* @attrs: Array pointing to attr_name and attr_state for attr_g
+ * @type: The type of @data.
+ * @data: The data structure representing the status and states of this cable.
*/
struct extcon_cable {
struct extcon_dev *edev;
@@ -155,6 +177,9 @@
struct device_attribute attr_state;
struct attribute *attrs[3]; /* to be fed to attr_g.attrs */
+
+ enum extcon_cable_type type;
+ union extcon_cable_data data;
};
/**
@@ -185,6 +210,17 @@
extern struct extcon_dev *extcon_get_extcon_dev(const char *extcon_name);
/*
+ * Following APIs are for managing the status and states of each cable.
+ * For example, if a cable is represented as a regulator, then the cable
+ * may have struct regulator as its data.
+ */
+extern void extcon_cable_set_data(struct extcon_dev *edev, int cable_index,
+ enum extcon_cable_type type,
+ union extcon_cable_data data);
+extern void extcon_cable_get_data(struct extcon_dev *edev, int cable_index,
+ enum extcon_cable_type *type,
+ union extcon_cable_data *data);
+/*
* get/set/update_state access the 32b encoded state value, which represents
* states of all possible cables of the multistate port. For example, if one
* calls extcon_set_state(edev, 0x7), it may mean that all the three cables
@@ -246,6 +282,14 @@
static inline void extcon_dev_unregister(struct extcon_dev *edev) { }
+static void extcon_cable_set_data(struct extcon_dev *edev, int cable_index,
+ enum extcon_cable_type type,
+ union extcon_cable_data data) { }
+
+static void extcon_cable_get_data(struct extcon_dev *edev, int cable_index,
+ enum extcon_cable_type *type,
+ union extcon_cable_data *data) { }
+
static inline u32 extcon_get_state(struct extcon_dev *edev)
{
return 0;
