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/freebsd-10.2-release/usr.sbin/bluetooth/bthidd/ | ||
H A D | hid.c | diff 281566 Wed Apr 15 22:13:04 MDT 2015 rakuco MFC r281116. bthidd: Consider usage ranges when dealing with array inputs. So far, we were always using HID_USAGE() to determine the Usage ID of a certain HID report input item. This does not work as intended if a field is an array and the allowed usages are specified with a usage range, as HID_USAGE() will return 0. We need to use the field value as an index in the usage range list in this case instead. This makes the volume keys in a Microsoft Bluetooth Mobile Keyboard 5000 be properly recognized. The relevant part of the HID report looks like this: 0xA1, 0x01, // Collection (Application) 0x85, 0x07, // Report ID (7) 0x05, 0x0C, // Usage Page (Consumer) 0x19, 0x00, // Usage Minimum (Unassigned) 0x2A, 0xFF, 0x03, // Usage Maximum (0x03FF) 0x95, 0x01, // Report Count (1) 0x75, 0x10, // Report Size (16) 0x15, 0x00, // Logical Minimum (0) 0x27, 0xFF, 0x03, 0x00, 0x00, // Logical Maximum (1023) 0x81, 0x00, // Input (Data,Array,Abs,No Wrap,Linear,Preferred // State,No Null Position) When a key such as "volume down" is pressed, the following data is transferred through Interrupt In: 0x07 0xEA 0x00 Differential Revision: https://reviews.freebsd.org/D2229 |
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