static LIST_HEAD(wacom_udev_list);
static DEFINE_MUTEX(wacom_udev_list_lock);
+static bool compare_device_paths(struct hid_device *hdev_a,
+ struct hid_device *hdev_b, char separator)
+{
+ int n1 = strrchr(hdev_a->phys, separator) - hdev_a->phys;
+ int n2 = strrchr(hdev_b->phys, separator) - hdev_b->phys;
+
+ if (n1 != n2 || n1 <= 0 || n2 <= 0)
+ return false;
+
+ return !strncmp(hdev_a->phys, hdev_b->phys, n1);
+}
+
static bool wacom_are_sibling(struct hid_device *hdev,
struct hid_device *sibling)
{
struct wacom *wacom = hid_get_drvdata(hdev);
struct wacom_features *features = &wacom->wacom_wac.features;
- int vid = features->oVid;
- int pid = features->oPid;
- int n1,n2;
+ struct wacom *sibling_wacom = hid_get_drvdata(sibling);
+ struct wacom_features *sibling_features = &sibling_wacom->wacom_wac.features;
+ __u32 oVid = features->oVid ? features->oVid : hdev->vendor;
+ __u32 oPid = features->oPid ? features->oPid : hdev->product;
- if (vid == 0 && pid == 0) {
- vid = hdev->vendor;
- pid = hdev->product;
+ /* The defined oVid/oPid must match that of the sibling */
+ if (features->oVid != HID_ANY_ID && sibling->vendor != oVid)
+ return false;
+ if (features->oPid != HID_ANY_ID && sibling->product != oPid)
+ return false;
+
+ /*
+ * Devices with the same VID/PID must share the same physical
+ * device path, while those with different VID/PID must share
+ * the same physical parent device path.
+ */
+ if (hdev->vendor == sibling->vendor && hdev->product == sibling->product) {
+ if (!compare_device_paths(hdev, sibling, '/'))
+ return false;
+ } else {
+ if (!compare_device_paths(hdev, sibling, '.'))
+ return false;
}
- if (vid != sibling->vendor || pid != sibling->product)
+ /* Skip the remaining heuristics unless you are a HID_GENERIC device */
+ if (features->type != HID_GENERIC)
+ return true;
+
+ /*
+ * Direct-input devices may not be siblings of indirect-input
+ * devices.
+ */
+ if ((features->device_type & WACOM_DEVICETYPE_DIRECT) &&
+ !(sibling_features->device_type & WACOM_DEVICETYPE_DIRECT))
return false;
- /* Compare the physical path. */
- n1 = strrchr(hdev->phys, '.') - hdev->phys;
- n2 = strrchr(sibling->phys, '.') - sibling->phys;
- if (n1 != n2 || n1 <= 0 || n2 <= 0)
+ /*
+ * Indirect-input devices may not be siblings of direct-input
+ * devices.
+ */
+ if (!(features->device_type & WACOM_DEVICETYPE_DIRECT) &&
+ (sibling_features->device_type & WACOM_DEVICETYPE_DIRECT))
+ return false;
+
+ /* Pen devices may only be siblings of touch devices */
+ if ((features->device_type & WACOM_DEVICETYPE_PEN) &&
+ !(sibling_features->device_type & WACOM_DEVICETYPE_TOUCH))
return false;
- return !strncmp(hdev->phys, sibling->phys, n1);
+ /* Touch devices may only be siblings of pen devices */
+ if ((features->device_type & WACOM_DEVICETYPE_TOUCH) &&
+ !(sibling_features->device_type & WACOM_DEVICETYPE_PEN))
+ return false;
+
+ /*
+ * No reason could be found for these two devices to NOT be
+ * siblings, so there's a good chance they ARE siblings
+ */
+ return true;
}
static struct wacom_hdev_data *wacom_get_hdev_data(struct hid_device *hdev)
{
struct wacom_hdev_data *data;
+ /* Try to find an already-probed interface from the same device */
+ list_for_each_entry(data, &wacom_udev_list, list) {
+ if (compare_device_paths(hdev, data->dev, '/'))
+ return data;
+ }
+
+ /* Fallback to finding devices that appear to be "siblings" */
list_for_each_entry(data, &wacom_udev_list, list) {
if (wacom_are_sibling(hdev, data->dev)) {
kref_get(&data->kref);
}
static enum power_supply_property wacom_battery_props[] = {
+ POWER_SUPPLY_PROP_MODEL_NAME,
POWER_SUPPLY_PROP_PRESENT,
POWER_SUPPLY_PROP_STATUS,
POWER_SUPPLY_PROP_SCOPE,
POWER_SUPPLY_PROP_CAPACITY
};
-static enum power_supply_property wacom_ac_props[] = {
- POWER_SUPPLY_PROP_PRESENT,
- POWER_SUPPLY_PROP_ONLINE,
- POWER_SUPPLY_PROP_SCOPE,
-};
-
static int wacom_battery_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
int ret = 0;
switch (psp) {
+ case POWER_SUPPLY_PROP_MODEL_NAME:
+ val->strval = battery->wacom->wacom_wac.name;
+ break;
case POWER_SUPPLY_PROP_PRESENT:
val->intval = battery->bat_connected;
break;
return ret;
}
-static int wacom_ac_get_property(struct power_supply *psy,
- enum power_supply_property psp,
- union power_supply_propval *val)
-{
- struct wacom_battery *battery = power_supply_get_drvdata(psy);
- int ret = 0;
-
- switch (psp) {
- case POWER_SUPPLY_PROP_PRESENT:
- /* fall through */
- case POWER_SUPPLY_PROP_ONLINE:
- val->intval = battery->ps_connected;
- break;
- case POWER_SUPPLY_PROP_SCOPE:
- val->intval = POWER_SUPPLY_SCOPE_DEVICE;
- break;
- default:
- ret = -EINVAL;
- break;
- }
- return ret;
-}
-
static int __wacom_initialize_battery(struct wacom *wacom,
struct wacom_battery *battery)
{
static atomic_t battery_no = ATOMIC_INIT(0);
struct device *dev = &wacom->hdev->dev;
struct power_supply_config psy_cfg = { .drv_data = battery, };
- struct power_supply *ps_bat, *ps_ac;
+ struct power_supply *ps_bat;
struct power_supply_desc *bat_desc = &battery->bat_desc;
- struct power_supply_desc *ac_desc = &battery->ac_desc;
unsigned long n;
int error;
if (!devres_open_group(dev, bat_desc, GFP_KERNEL))
return -ENOMEM;
+ battery->wacom = wacom;
+
n = atomic_inc_return(&battery_no) - 1;
bat_desc->properties = wacom_battery_props;
bat_desc->type = POWER_SUPPLY_TYPE_USB;
bat_desc->use_for_apm = 0;
- ac_desc->properties = wacom_ac_props;
- ac_desc->num_properties = ARRAY_SIZE(wacom_ac_props);
- ac_desc->get_property = wacom_ac_get_property;
- sprintf(battery->ac_name, "wacom_ac_%ld", n);
- ac_desc->name = battery->ac_name;
- ac_desc->type = POWER_SUPPLY_TYPE_MAINS;
- ac_desc->use_for_apm = 0;
-
ps_bat = devm_power_supply_register(dev, bat_desc, &psy_cfg);
if (IS_ERR(ps_bat)) {
error = PTR_ERR(ps_bat);
goto err;
}
- ps_ac = devm_power_supply_register(dev, ac_desc, &psy_cfg);
- if (IS_ERR(ps_ac)) {
- error = PTR_ERR(ps_ac);
- goto err;
- }
-
power_supply_powers(ps_bat, &wacom->hdev->dev);
- power_supply_powers(ps_ac, &wacom->hdev->dev);
battery->battery = ps_bat;
- battery->ac = ps_ac;
devres_close_group(dev, bat_desc);
return 0;
devres_release_group(&wacom->hdev->dev,
&wacom->battery.bat_desc);
wacom->battery.battery = NULL;
- wacom->battery.ac = NULL;
}
}
strlcpy(name, features->name, sizeof(name));
}
+ snprintf(wacom_wac->name, sizeof(wacom_wac->name), "%s%s",
+ name, suffix);
+
/* Append the device type to the name */
snprintf(wacom_wac->pen_name, sizeof(wacom_wac->pen_name),
"%s%s Pen", name, suffix);
goto fail;
}
+ strlcpy(wacom_wac->name, wacom_wac1->name,
+ sizeof(wacom_wac->name));
error = wacom_initialize_battery(wacom);
if (error)
goto fail;
projects / cascardo / linux.git / blobdiff