diff options
| -rw-r--r-- | drivers/hid/hid-input.c | 43 |
1 files changed, 20 insertions, 23 deletions
diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c index f5c3efcdcb0..771ff5df574 100644 --- a/drivers/hid/hid-input.c +++ b/drivers/hid/hid-input.c @@ -351,20 +351,22 @@ static int hidinput_get_battery_property(struct power_supply *psy, return ret; } -static void hidinput_setup_battery(struct hid_device *dev, - unsigned report_type, unsigned report_id, - s32 min, s32 max) +static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type, struct hid_field *field) { struct power_supply *battery = &dev->battery; int ret; unsigned quirks; + s32 min, max; + + if (field->usage->hid != HID_DC_BATTERYSTRENGTH) + return false; /* no match */ if (battery->name != NULL) - return; /* already initialized? */ + goto out; /* already initialized? */ battery->name = kasprintf(GFP_KERNEL, "hid-%s-battery", dev->uniq); if (battery->name == NULL) - return; + goto out; battery->type = POWER_SUPPLY_TYPE_USB; battery->properties = hidinput_battery_props; @@ -374,6 +376,9 @@ static void hidinput_setup_battery(struct hid_device *dev, quirks = find_battery_quirk(dev); + min = field->logical_minimum; + max = field->logical_maximum; + if (quirks & HID_BATTERY_QUIRK_PERCENT) { min = 0; max = 100; @@ -382,7 +387,7 @@ static void hidinput_setup_battery(struct hid_device *dev, dev->battery_min = min; dev->battery_max = max; dev->battery_report_type = report_type; - dev->battery_report_id = report_id; + dev->battery_report_id = field->report->id; ret = power_supply_register(&dev->dev, battery); if (ret != 0) { @@ -390,6 +395,9 @@ static void hidinput_setup_battery(struct hid_device *dev, kfree(battery->name); battery->name = NULL; } + +out: + return true; } static void hidinput_cleanup_battery(struct hid_device *dev) @@ -402,10 +410,10 @@ static void hidinput_cleanup_battery(struct hid_device *dev) dev->battery.name = NULL; } #else /* !CONFIG_HID_BATTERY_STRENGTH */ -static void hidinput_setup_battery(struct hid_device *dev, - unsigned report_type, unsigned report_id, - s32 min, s32 max) +static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type, + struct hid_field *field) { + return false; } static void hidinput_cleanup_battery(struct hid_device *dev) @@ -772,14 +780,9 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel break; case HID_UP_GENDEVCTRLS: - if ((usage->hid & HID_USAGE) == 0x20) { /* Battery Strength */ - hidinput_setup_battery(device, - HID_INPUT_REPORT, - field->report->id, - field->logical_minimum, - field->logical_maximum); + if (hidinput_setup_battery(device, HID_INPUT_REPORT, field)) goto ignore; - } else + else goto unknown; break; @@ -1055,13 +1058,7 @@ static void report_features(struct hid_device *hid) for (i = 0; i < rep->maxfield; i++) for (j = 0; j < rep->field[i]->maxusage; j++) { /* Verify if Battery Strength feature is available */ - if (((rep->field[i]->usage + j)->hid & HID_USAGE_PAGE) == HID_UP_GENDEVCTRLS && - ((rep->field[i]->usage + j)->hid & HID_USAGE) == 0x20) { - hidinput_setup_battery(hid, - HID_FEATURE_REPORT, rep->id, - rep->field[i]->logical_minimum, - rep->field[i]->logical_maximum); - } + hidinput_setup_battery(hid, HID_FEATURE_REPORT, rep->field[i]); if (drv->feature_mapping) drv->feature_mapping(hid, rep->field[i], |