diff options
| -rw-r--r-- | drivers/hid/hid-input.c | 61 | ||||
| -rw-r--r-- | include/linux/hid.h | 1 |
2 files changed, 47 insertions, 15 deletions
diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c index b9b8c75a6f9..8fac47cf42f 100644 --- a/drivers/hid/hid-input.c +++ b/drivers/hid/hid-input.c @@ -277,6 +277,7 @@ static enum power_supply_property hidinput_battery_props[] = { POWER_SUPPLY_PROP_ONLINE, POWER_SUPPLY_PROP_CAPACITY, POWER_SUPPLY_PROP_MODEL_NAME, + POWER_SUPPLY_PROP_STATUS }; static int hidinput_get_battery_property(struct power_supply *psy, @@ -285,6 +286,9 @@ static int hidinput_get_battery_property(struct power_supply *psy, { struct hid_device *dev = container_of(psy, struct hid_device, battery); int ret = 0; + int ret_rep; + __u8 *buf = NULL; + unsigned char report_number = dev->battery_report_id; switch (prop) { case POWER_SUPPLY_PROP_PRESENT: @@ -293,28 +297,45 @@ static int hidinput_get_battery_property(struct power_supply *psy, break; case POWER_SUPPLY_PROP_CAPACITY: - if (dev->battery_min < dev->battery_max && - dev->battery_val >= dev->battery_min && - dev->battery_val <= dev->battery_max) - val->intval = (100 * (dev->battery_val - dev->battery_min)) / - (dev->battery_max - dev->battery_min); - else + buf = kmalloc(2 * sizeof(__u8), GFP_KERNEL); + if (!buf) { + ret = -ENOMEM; + break; + } + + memset(buf, 0, sizeof(buf)); + ret_rep = dev->hid_get_raw_report(dev, report_number, buf, sizeof(buf), HID_FEATURE_REPORT); + if (ret_rep != 2) { ret = -EINVAL; + break; + } + + /* store the returned value */ + /* I'm not calculating this using the logical_minimum and maximum */ + /* because my device returns 0-100 even though the min and max are 0-255 */ + val->intval = buf[1]; break; case POWER_SUPPLY_PROP_MODEL_NAME: val->strval = dev->name; break; + case POWER_SUPPLY_PROP_STATUS: + val->intval = POWER_SUPPLY_STATUS_DISCHARGING; + break; + default: ret = -EINVAL; break; } + if (buf) { + kfree(buf); + } return ret; } -static void hidinput_setup_battery(struct hid_device *dev, s32 min, s32 max) +static void hidinput_setup_battery(struct hid_device *dev, unsigned id, s32 min, s32 max) { struct power_supply *battery = &dev->battery; int ret; @@ -326,7 +347,7 @@ static void hidinput_setup_battery(struct hid_device *dev, s32 min, s32 max) if (battery->name == NULL) return; - battery->type = POWER_SUPPLY_TYPE_BATTERY; + battery->type = POWER_SUPPLY_TYPE_USB; battery->properties = hidinput_battery_props; battery->num_properties = ARRAY_SIZE(hidinput_battery_props); battery->use_for_apm = 0; @@ -334,6 +355,7 @@ static void hidinput_setup_battery(struct hid_device *dev, s32 min, s32 max) dev->battery_min = min; dev->battery_max = max; + dev->battery_report_id = id; ret = power_supply_register(&dev->dev, battery); if (ret != 0) { @@ -353,7 +375,7 @@ 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, s32 min, s32 max) +static void hidinput_setup_battery(struct hid_device *dev, unsigned id, s32 min, s32 max) { } @@ -723,6 +745,7 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel case HID_UP_GENDEVCTRLS: if ((usage->hid & HID_USAGE) == 0x20) { /* Battery Strength */ hidinput_setup_battery(device, + field->report->id, field->logical_minimum, field->logical_maximum); goto ignore; @@ -997,15 +1020,23 @@ static void report_features(struct hid_device *hid) struct hid_report *rep; int i, j; - if (!drv->feature_mapping) - return; - rep_enum = &hid->report_enum[HID_FEATURE_REPORT]; list_for_each_entry(rep, &rep_enum->report_list, list) for (i = 0; i < rep->maxfield; i++) - for (j = 0; j < rep->field[i]->maxusage; j++) - drv->feature_mapping(hid, rep->field[i], - rep->field[i]->usage + j); + 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, + rep->id, + rep->field[i]->logical_minimum, + rep->field[i]->logical_maximum); + } + + if (drv->feature_mapping) + drv->feature_mapping(hid, rep->field[i], + rep->field[i]->usage + j); + } } /* diff --git a/include/linux/hid.h b/include/linux/hid.h index 7f344c3da76..b5df198d87a 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -496,6 +496,7 @@ struct hid_device { /* device report descriptor */ __s32 battery_min; __s32 battery_max; __s32 battery_val; + __s32 battery_report_id; #endif unsigned int status; /* see STAT flags above */ |