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| author | Alexander Holler <holler@ahsoftware.de> | 2012-12-09 12:44:30 +0100 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2012-12-12 16:49:10 +0100 |
| commit | 83499b52c61f50292f0aae36499de8a8fc3e37c3 (patch) | |
| tree | e9e64260fc9aa83cfc6c34bc5226c5252b84c68c /drivers/hid/hid-core.c | |
| parent | 1a1e8c6fada5f6dc48aa5dad453c9d9ebfdc8218 (diff) | |
| download | linux-83499b52c61f50292f0aae36499de8a8fc3e37c3.tar.gz linux-83499b52c61f50292f0aae36499de8a8fc3e37c3.tar.bz2 linux-83499b52c61f50292f0aae36499de8a8fc3e37c3.zip | |
HID: sensors: autodetect USB HID sensor hubs
It should not be necessary to add IDs for HID sensor hubs to lists in
hid-core.c and hid-sensor-hub.c. So instead of a whitelist, autodetect such USB
HID sensor hubs, based on a collection of type physical inside a useage page of
type sensor. If some sensor hubs stil must be usable as raw devices, a
blacklist might be created.
Signed-off-by: Alexander Holler <holler@ahsoftware.de>
Acked-by: "Pandruvada, Srinivas" <srinivas.pandruvada@intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid/hid-core.c')
| -rw-r--r-- | drivers/hid/hid-core.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c index f4109fd657ff..7df5399a9386 100644 --- a/drivers/hid/hid-core.c +++ b/drivers/hid/hid-core.c @@ -713,7 +713,12 @@ static int hid_scan_report(struct hid_device *hid) hid_scan_usage(hid, u); break; } - } + } else if (page == HID_UP_SENSOR && + item.type == HID_ITEM_TYPE_MAIN && + item.tag == HID_MAIN_ITEM_TAG_BEGIN_COLLECTION && + (item_udata(&item) & 0xff) == HID_COLLECTION_PHYSICAL && + hid->bus == BUS_USB) + hid->group = HID_GROUP_SENSOR_HUB; } return 0; @@ -1465,6 +1470,10 @@ EXPORT_SYMBOL_GPL(hid_disconnect); * there is a proper autodetection and autoloading in place (based on presence * of HID_DG_CONTACTID), so those devices don't need to be added to this list, * as we are doing the right thing in hid_scan_usage(). + * + * Autodetection for (USB) HID sensor hubs exists too. If a collection of type + * physical is found inside a usage page of type sensor, hid-sensor-hub will be + * used as a driver. See hid_scan_report(). */ static const struct hid_device_id hid_have_special_driver[] = { { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU) }, |