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@ -32,6 +32,8 @@
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#include <linux/hid.h>
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#include <linux/hid-debug.h>
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#include "hid-ids.h"
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#define unk KEY_UNKNOWN
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static const unsigned char hid_keyboard[256] = {
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@ -277,14 +279,38 @@ static enum power_supply_property hidinput_battery_props[] = {
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POWER_SUPPLY_PROP_ONLINE,
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POWER_SUPPLY_PROP_CAPACITY,
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POWER_SUPPLY_PROP_MODEL_NAME,
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POWER_SUPPLY_PROP_STATUS
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};
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#define HID_BATTERY_QUIRK_PERCENT (1 << 0) /* always reports percent */
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#define HID_BATTERY_QUIRK_FEATURE (1 << 1) /* ask for feature report */
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static const struct hid_device_id hid_battery_quirks[] = {
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{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
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USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI),
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HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
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{}
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};
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static unsigned find_battery_quirk(struct hid_device *hdev)
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{
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unsigned quirks = 0;
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const struct hid_device_id *match;
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match = hid_match_id(hdev, hid_battery_quirks);
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if (match != NULL)
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quirks = match->driver_data;
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return quirks;
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}
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static int hidinput_get_battery_property(struct power_supply *psy,
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enum power_supply_property prop,
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union power_supply_propval *val)
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{
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struct hid_device *dev = container_of(psy, struct hid_device, battery);
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int ret = 0;
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__u8 buf[2] = {};
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switch (prop) {
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case POWER_SUPPLY_PROP_PRESENT:
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@ -293,19 +319,31 @@ static int hidinput_get_battery_property(struct power_supply *psy,
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break;
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case POWER_SUPPLY_PROP_CAPACITY:
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if (dev->battery_min < dev->battery_max &&
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dev->battery_val >= dev->battery_min &&
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dev->battery_val <= dev->battery_max)
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val->intval = (100 * (dev->battery_val - dev->battery_min)) /
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(dev->battery_max - dev->battery_min);
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else
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ret = dev->hid_get_raw_report(dev, dev->battery_report_id,
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buf, sizeof(buf),
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dev->battery_report_type);
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if (ret != 2) {
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if (ret >= 0)
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ret = -EINVAL;
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break;
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}
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if (dev->battery_min < dev->battery_max &&
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buf[1] >= dev->battery_min &&
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buf[1] <= dev->battery_max)
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val->intval = (100 * (buf[1] - dev->battery_min)) /
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(dev->battery_max - dev->battery_min);
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break;
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case POWER_SUPPLY_PROP_MODEL_NAME:
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val->strval = dev->name;
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break;
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case POWER_SUPPLY_PROP_STATUS:
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val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
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break;
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default:
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ret = -EINVAL;
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break;
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@ -314,17 +352,22 @@ static int hidinput_get_battery_property(struct power_supply *psy,
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return ret;
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}
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static void hidinput_setup_battery(struct hid_device *dev, s32 min, s32 max)
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static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type, struct hid_field *field)
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{
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struct power_supply *battery = &dev->battery;
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int ret;
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unsigned quirks;
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s32 min, max;
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if (field->usage->hid != HID_DC_BATTERYSTRENGTH)
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return false; /* no match */
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if (battery->name != NULL)
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return; /* already initialized? */
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goto out; /* already initialized? */
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battery->name = kasprintf(GFP_KERNEL, "hid-%s-battery", dev->uniq);
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if (battery->name == NULL)
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return;
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goto out;
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battery->type = POWER_SUPPLY_TYPE_BATTERY;
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battery->properties = hidinput_battery_props;
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@ -332,8 +375,26 @@ static void hidinput_setup_battery(struct hid_device *dev, s32 min, s32 max)
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battery->use_for_apm = 0;
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battery->get_property = hidinput_get_battery_property;
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quirks = find_battery_quirk(dev);
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hid_dbg(dev, "device %x:%x:%x %d quirks %d\n",
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dev->bus, dev->vendor, dev->product, dev->version, quirks);
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min = field->logical_minimum;
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max = field->logical_maximum;
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if (quirks & HID_BATTERY_QUIRK_PERCENT) {
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min = 0;
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max = 100;
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}
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if (quirks & HID_BATTERY_QUIRK_FEATURE)
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report_type = HID_FEATURE_REPORT;
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dev->battery_min = min;
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dev->battery_max = max;
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dev->battery_report_type = report_type;
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dev->battery_report_id = field->report->id;
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ret = power_supply_register(&dev->dev, battery);
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if (ret != 0) {
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@ -341,6 +402,9 @@ static void hidinput_setup_battery(struct hid_device *dev, s32 min, s32 max)
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kfree(battery->name);
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battery->name = NULL;
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}
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out:
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return true;
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}
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static void hidinput_cleanup_battery(struct hid_device *dev)
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@ -353,8 +417,10 @@ static void hidinput_cleanup_battery(struct hid_device *dev)
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dev->battery.name = NULL;
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}
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#else /* !CONFIG_HID_BATTERY_STRENGTH */
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static void hidinput_setup_battery(struct hid_device *dev, s32 min, s32 max)
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static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
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struct hid_field *field)
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{
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return false;
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}
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static void hidinput_cleanup_battery(struct hid_device *dev)
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@ -721,12 +787,9 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel
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break;
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case HID_UP_GENDEVCTRLS:
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if ((usage->hid & HID_USAGE) == 0x20) { /* Battery Strength */
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hidinput_setup_battery(device,
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field->logical_minimum,
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field->logical_maximum);
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if (hidinput_setup_battery(device, HID_INPUT_REPORT, field))
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goto ignore;
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} else
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else
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goto unknown;
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break;
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@ -861,14 +924,6 @@ void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct
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input = field->hidinput->input;
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#ifdef CONFIG_HID_BATTERY_STRENGTH
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if (usage->hid == HID_DC_BATTERYSTRENGTH) {
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hid->battery_val = value;
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hid_dbg(hid, "battery value is %d (range %d-%d)\n",
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value, hid->battery_min, hid->battery_max);
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return;
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}
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#endif
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if (!usage->type)
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return;
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@ -1039,15 +1094,17 @@ static void report_features(struct hid_device *hid)
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struct hid_report *rep;
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int i, j;
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if (!drv->feature_mapping)
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return;
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rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
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list_for_each_entry(rep, &rep_enum->report_list, list)
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for (i = 0; i < rep->maxfield; i++)
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for (j = 0; j < rep->field[i]->maxusage; j++)
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for (j = 0; j < rep->field[i]->maxusage; j++) {
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/* Verify if Battery Strength feature is available */
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hidinput_setup_battery(hid, HID_FEATURE_REPORT, rep->field[i]);
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if (drv->feature_mapping)
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drv->feature_mapping(hid, rep->field[i],
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rep->field[i]->usage + j);
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}
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}
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/*
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