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power: supply: core: Add a macro that maps enum properties to text values 

Reduce the number of touch points to add a new enum property to the
power_supply class by mapping the array of text values to the device
attribute descriptor. A new enum property can now added by creating an
array with the text values named POWER_SUPPLY_${PROPNAME}_TEXT and
adding POWER_SUPPLY_ENUM_ATTR(${PROPNAME}) to the power_supply_attrs
array.

Signed-off-by: Mathew King <mathewk@chromium.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
This commit is contained in:
Mathew King 2020-05-04 14:29:29 -06:00 committed by Sebastian Reichel
parent d960d91f86
commit 5b505366ac
1 changed files with 50 additions and 74 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

112
drivers/power/supply/power_supply_sysfs.c
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@ -24,16 +24,26 @@ struct power_supply_attr {
const char *prop_name;
char attr_name[MAX_PROP_NAME_LEN + 1];
struct device_attribute dev_attr;
const char * const *text_values;
int text_values_len;
};
#define POWER_SUPPLY_ATTR(_name) \
#define _POWER_SUPPLY_ATTR(_name, _text, _len) \
[POWER_SUPPLY_PROP_ ## _name] = \
{ \
.prop_name = #_name, \
.attr_name = #_name "\0", \
.text_values = _text, \
.text_values_len = _len, \
}
static const char * const power_supply_type_text[] = {
#define POWER_SUPPLY_ATTR(_name) _POWER_SUPPLY_ATTR(_name, NULL, 0)
#define _POWER_SUPPLY_ENUM_ATTR(_name, _text) \
_POWER_SUPPLY_ATTR(_name, _text, ARRAY_SIZE(_text))
#define POWER_SUPPLY_ENUM_ATTR(_name) \
_POWER_SUPPLY_ENUM_ATTR(_name, POWER_SUPPLY_ ## _name ## _TEXT)
static const char * const POWER_SUPPLY_TYPE_TEXT[] = {
[POWER_SUPPLY_TYPE_UNKNOWN] = "Unknown",
[POWER_SUPPLY_TYPE_BATTERY] = "Battery",
[POWER_SUPPLY_TYPE_UPS] = "UPS",
@ -48,7 +58,7 @@ static const char * const power_supply_type_text[] = {
[POWER_SUPPLY_TYPE_APPLE_BRICK_ID] = "BrickID",
};
static const char * const power_supply_usb_type_text[] = {
static const char * const POWER_SUPPLY_USB_TYPE_TEXT[] = {
[POWER_SUPPLY_USB_TYPE_UNKNOWN] = "Unknown",
[POWER_SUPPLY_USB_TYPE_SDP] = "SDP",
[POWER_SUPPLY_USB_TYPE_DCP] = "DCP",
@ -61,7 +71,7 @@ static const char * const power_supply_usb_type_text[] = {
[POWER_SUPPLY_USB_TYPE_APPLE_BRICK_ID] = "BrickID",
};
static const char * const power_supply_status_text[] = {
static const char * const POWER_SUPPLY_STATUS_TEXT[] = {
[POWER_SUPPLY_STATUS_UNKNOWN] = "Unknown",
[POWER_SUPPLY_STATUS_CHARGING] = "Charging",
[POWER_SUPPLY_STATUS_DISCHARGING] = "Discharging",
@ -69,7 +79,7 @@ static const char * const power_supply_status_text[] = {
[POWER_SUPPLY_STATUS_FULL] = "Full",
};
static const char * const power_supply_charge_type_text[] = {
static const char * const POWER_SUPPLY_CHARGE_TYPE_TEXT[] = {
[POWER_SUPPLY_CHARGE_TYPE_UNKNOWN] = "Unknown",
[POWER_SUPPLY_CHARGE_TYPE_NONE] = "N/A",
[POWER_SUPPLY_CHARGE_TYPE_TRICKLE] = "Trickle",
@ -79,7 +89,7 @@ static const char * const power_supply_charge_type_text[] = {
[POWER_SUPPLY_CHARGE_TYPE_CUSTOM] = "Custom",
};
static const char * const power_supply_health_text[] = {
static const char * const POWER_SUPPLY_HEALTH_TEXT[] = {
[POWER_SUPPLY_HEALTH_UNKNOWN] = "Unknown",
[POWER_SUPPLY_HEALTH_GOOD] = "Good",
[POWER_SUPPLY_HEALTH_OVERHEAT] = "Overheat",
@ -92,7 +102,7 @@ static const char * const power_supply_health_text[] = {
[POWER_SUPPLY_HEALTH_OVERCURRENT] = "Over current",
};
static const char * const power_supply_technology_text[] = {
static const char * const POWER_SUPPLY_TECHNOLOGY_TEXT[] = {
[POWER_SUPPLY_TECHNOLOGY_UNKNOWN] = "Unknown",
[POWER_SUPPLY_TECHNOLOGY_NiMH] = "NiMH",
[POWER_SUPPLY_TECHNOLOGY_LION] = "Li-ion",
@ -102,7 +112,7 @@ static const char * const power_supply_technology_text[] = {
[POWER_SUPPLY_TECHNOLOGY_LiMn] = "LiMn",
};
static const char * const power_supply_capacity_level_text[] = {
static const char * const POWER_SUPPLY_CAPACITY_LEVEL_TEXT[] = {
[POWER_SUPPLY_CAPACITY_LEVEL_UNKNOWN] = "Unknown",
[POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL] = "Critical",
[POWER_SUPPLY_CAPACITY_LEVEL_LOW] = "Low",
@ -111,7 +121,7 @@ static const char * const power_supply_capacity_level_text[] = {
[POWER_SUPPLY_CAPACITY_LEVEL_FULL] = "Full",
};
static const char * const power_supply_scope_text[] = {
static const char * const POWER_SUPPLY_SCOPE_TEXT[] = {
[POWER_SUPPLY_SCOPE_UNKNOWN] = "Unknown",
[POWER_SUPPLY_SCOPE_SYSTEM] = "System",
[POWER_SUPPLY_SCOPE_DEVICE] = "Device",
@ -119,13 +129,13 @@ static const char * const power_supply_scope_text[] = {
static struct power_supply_attr power_supply_attrs[] = {
/* Properties of type `int' */
POWER_SUPPLY_ATTR(STATUS),
POWER_SUPPLY_ATTR(CHARGE_TYPE),
POWER_SUPPLY_ATTR(HEALTH),
POWER_SUPPLY_ENUM_ATTR(STATUS),
POWER_SUPPLY_ENUM_ATTR(CHARGE_TYPE),
POWER_SUPPLY_ENUM_ATTR(HEALTH),
POWER_SUPPLY_ATTR(PRESENT),
POWER_SUPPLY_ATTR(ONLINE),
POWER_SUPPLY_ATTR(AUTHENTIC),
POWER_SUPPLY_ATTR(TECHNOLOGY),
POWER_SUPPLY_ENUM_ATTR(TECHNOLOGY),
POWER_SUPPLY_ATTR(CYCLE_COUNT),
POWER_SUPPLY_ATTR(VOLTAGE_MAX),
POWER_SUPPLY_ATTR(VOLTAGE_MIN),
@ -168,7 +178,7 @@ static struct power_supply_attr power_supply_attrs[] = {
POWER_SUPPLY_ATTR(CAPACITY),
POWER_SUPPLY_ATTR(CAPACITY_ALERT_MIN),
POWER_SUPPLY_ATTR(CAPACITY_ALERT_MAX),
POWER_SUPPLY_ATTR(CAPACITY_LEVEL),
POWER_SUPPLY_ENUM_ATTR(CAPACITY_LEVEL),
POWER_SUPPLY_ATTR(TEMP),
POWER_SUPPLY_ATTR(TEMP_MAX),
POWER_SUPPLY_ATTR(TEMP_MIN),
@ -181,9 +191,9 @@ static struct power_supply_attr power_supply_attrs[] = {
POWER_SUPPLY_ATTR(TIME_TO_EMPTY_AVG),
POWER_SUPPLY_ATTR(TIME_TO_FULL_NOW),
POWER_SUPPLY_ATTR(TIME_TO_FULL_AVG),
POWER_SUPPLY_ATTR(TYPE),
POWER_SUPPLY_ENUM_ATTR(TYPE),
POWER_SUPPLY_ATTR(USB_TYPE),
POWER_SUPPLY_ATTR(SCOPE),
POWER_SUPPLY_ENUM_ATTR(SCOPE),
POWER_SUPPLY_ATTR(PRECHARGE_CURRENT),
POWER_SUPPLY_ATTR(CHARGE_TERM_CURRENT),
POWER_SUPPLY_ATTR(CALIBRATE),
@ -196,10 +206,14 @@ static struct power_supply_attr power_supply_attrs[] = {
static struct attribute *
__power_supply_attrs[ARRAY_SIZE(power_supply_attrs) + 1];
static struct power_supply_attr *to_ps_attr(struct device_attribute *attr)
{
return container_of(attr, struct power_supply_attr, dev_attr);
}
static enum power_supply_property dev_attr_psp(struct device_attribute *attr)
{
return container_of(attr, struct power_supply_attr, dev_attr) -
power_supply_attrs;
return to_ps_attr(attr) - power_supply_attrs;
}
static ssize_t power_supply_show_usb_type(struct device *dev,
@ -217,11 +231,11 @@ static ssize_t power_supply_show_usb_type(struct device *dev,
if (value->intval == usb_type) {
count += sprintf(buf + count, "[%s] ",
power_supply_usb_type_text[usb_type]);
POWER_SUPPLY_USB_TYPE_TEXT[usb_type]);
match = true;
} else {
count += sprintf(buf + count, "%s ",
power_supply_usb_type_text[usb_type]);
POWER_SUPPLY_USB_TYPE_TEXT[usb_type]);
}
}
@ -241,6 +255,7 @@ static ssize_t power_supply_show_property(struct device *dev,
char *buf) {
ssize_t ret;
struct power_supply *psy = dev_get_drvdata(dev);
struct power_supply_attr *ps_attr = to_ps_attr(attr);
enum power_supply_property psp = dev_attr_psp(attr);
union power_supply_propval value;
@ -261,39 +276,16 @@ static ssize_t power_supply_show_property(struct device *dev,
}
}
if (ps_attr->text_values_len > 0 &&
value.intval < ps_attr->text_values_len && value.intval >= 0) {
return sprintf(buf, "%s\n", ps_attr->text_values[value.intval]);
}
switch (psp) {
case POWER_SUPPLY_PROP_STATUS:
ret = sprintf(buf, "%s\n",
power_supply_status_text[value.intval]);
break;
case POWER_SUPPLY_PROP_CHARGE_TYPE:
ret = sprintf(buf, "%s\n",
power_supply_charge_type_text[value.intval]);
break;
case POWER_SUPPLY_PROP_HEALTH:
ret = sprintf(buf, "%s\n",
power_supply_health_text[value.intval]);
break;
case POWER_SUPPLY_PROP_TECHNOLOGY:
ret = sprintf(buf, "%s\n",
power_supply_technology_text[value.intval]);
break;
case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
ret = sprintf(buf, "%s\n",
power_supply_capacity_level_text[value.intval]);
break;
case POWER_SUPPLY_PROP_TYPE:
ret = sprintf(buf, "%s\n",
power_supply_type_text[value.intval]);
break;
case POWER_SUPPLY_PROP_USB_TYPE:
ret = power_supply_show_usb_type(dev, psy->desc,
&value, buf);
break;
case POWER_SUPPLY_PROP_SCOPE:
ret = sprintf(buf, "%s\n",
power_supply_scope_text[value.intval]);
break;
case POWER_SUPPLY_PROP_MODEL_NAME ... POWER_SUPPLY_PROP_SERIAL_NUMBER:
ret = sprintf(buf, "%s\n", value.strval);
break;
@ -309,30 +301,14 @@ static ssize_t power_supply_store_property(struct device *dev,
const char *buf, size_t count) {
ssize_t ret;
struct power_supply *psy = dev_get_drvdata(dev);
struct power_supply_attr *ps_attr = to_ps_attr(attr);
enum power_supply_property psp = dev_attr_psp(attr);
union power_supply_propval value;
switch (psp) {
case POWER_SUPPLY_PROP_STATUS:
ret = sysfs_match_string(power_supply_status_text, buf);
break;
case POWER_SUPPLY_PROP_CHARGE_TYPE:
ret = sysfs_match_string(power_supply_charge_type_text, buf);
break;
case POWER_SUPPLY_PROP_HEALTH:
ret = sysfs_match_string(power_supply_health_text, buf);
break;
case POWER_SUPPLY_PROP_TECHNOLOGY:
ret = sysfs_match_string(power_supply_technology_text, buf);
break;
case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
ret = sysfs_match_string(power_supply_capacity_level_text, buf);
break;
case POWER_SUPPLY_PROP_SCOPE:
ret = sysfs_match_string(power_supply_scope_text, buf);
break;
default:
ret = -EINVAL;
if (ps_attr->text_values_len > 0) {
ret = __sysfs_match_string(ps_attr->text_values,
ps_attr->text_values_len, buf);
}
/*