I am trying to add the newer Sony Google TV remote, and am looking for some advice on how to get this implemented. This is my first experience with hid drivers and multitouch. Some base info: Bluetooth only Keyboard Multitouch trackpad Accelerometer http://discover.store.sony.com/googletv/#remote Below is the original report descriptor with my annotations. In kernel 3.6.11 the keyboard works great, but the trackpad and accelerometer don't work out of the box. I can get the trackpad to work as a one-button mouse by rewriting the report descriptor in a custom hid device module. I am thinking the 0xff01 usage page is what keeps it from being detected as a pointing device to begin with, requiring a rewrite of the report descriptor. Is this kind of approach frowned upon? There are some quirks that I believe might make this device unusual compared to others. The entire trackpad surface acts as a mechanical button, i.e. the trackpad physically pushes into the remote body, so using tapping movements may be confusing to the user. The remote also has a 'drag' button that acts like a mouse button but is only active when held down and there is trackpad motion. I think it was intended for one-handed dragging, so would have to utilize some kind of dragging-on/dragging-off state. I understand the individual mouse reports, which always contain X and Y absolute values for both contact points. There are two values that seem to be some sort of contact identifier, we'll call them a and b. With no fingers touching, a=0, b=0. With just the first finger touching, a=1, b=0. With both the first and second finger touching, a=2, b=2. Then, with just the second finger touching, a=0, b=1. Has this been seen before? Would that be used to translate into a contact identifier? The accelerometer doesn't seem to show any events, I saw the sixaxis driver needs some kind of set_operational command before it begins working, I'd have to investigate if that sort of thing is necessary for this remote control. If I get the accelerometer working, do I leave it as-is, and leave the implementation up to userspace? What would the accelerometer do? Mimic a mouse? Mimic a joystick? Also, the remote has a power button and when it is pressed the bluetooth connection is dropped, just the same as when it goes to sleep. Is there a way of handling the power button? Is that something that would have to happen on the bluez, or bluetooth side of things? One more thing, the report ids 5, 6, and 8. Any idea what those could be? They have output values, and there are 3 LEDs on the device, including a data indicator and two Fn lights, but the amount of data in those report descriptors are quite large. Does anybody have an example rdesc of a similar multitouch trackpad that I could use in my custom rdesc to enable multitouch? Thanks for the help. 05 01 // USAGE_PAGE (Generic Desktop) 09 06 // USAGE (Keyboard) a1 01 // COLLECTION (Application) 85 01 // REPORT_ID (1) 75 01 // REPORT_SIZE (1) 95 08 // REPORT_COUNT (8) 05 07 // USAGE_PAGE (Keyboard/Keypad) 19 e0 // USAGE_MINIMUM (224) <- Left ctrl 29 e7 // USAGE_MAXIMIUM (231) <- Right GUI 15 00 // LOGICAL_MINIMUM (0) 25 01 // LOGICAL_MAXIMUM (1) 81 02 // INPUT (Data,Variable,Absolute) <- Usual modifier keys 95 01 // REPORT_COUNT (1) 75 08 // REPORT_SIZE (8) 81 03 // INPUT (Constant,Variable,Absolute) 95 06 // REPORT_COUNT (6) 75 08 // REPORT_SIZE (8) 15 00 // LOGICAL_MINIMUM (0) 26 ff 00 // LOGICAL_MAXIMUM (255) 05 07 // USAGE_PAGE (Keyboard/Keypad) 19 00 // USAGE_MINIMUM (0) 29 ff // USAGE_MAXIMIUM (255) 81 00 // INPUT (Data,Array,Absolute) <- Regular keyboard keys c0 // END_COLLECTION 06 01 ff // USAGE_PAGE (Generic Device Reserved) <- Vendor specific? 09 01 // USAGE (Pointer) <- A multitouch trackpad a1 01 // COLLECTION (Application) 85 02 // REPORT_ID (2) 19 01 // USAGE_MINIMUM (1) <- Main mechanical touchpad button 29 04 // USAGE_MAXIMUM (4) <- Button 3 is drag, other values appear constant 15 00 // LOGICAL_MINIMUM (0) 25 01 // LOGICAL_MAXIMUM (1) 75 01 // REPORT_SIZE (1) 95 04 // REPORT_COUNT (4) 81 02 // INPUT (Data,Variable,Absolute) 19 00 // USAGE_MINIMUM (0) 29 01 // USAGE_MAXIMUM (1) 15 00 // LOGICAL_MINIMUM (0) 25 03 // LOGICAL_MAXIMUM (3) 75 02 // REPORT_SIZE (2) 95 02 // REPORT_COUNT (2) 81 02 // INPUT (Data,Variable,Absolute) <- Contact identifiers 09 30 // USAGE (X) 09 31 // USAGE (Y) 16 01 f8 // LOGICAL_MINIMUM (-2047) 26 ff 07 // LOGICAL_MAXIMUM (2047) 75 0c // REPORT_SIZE (12) 95 02 // REPORT_COUNT(2) 81 02 // INPUT (Data,Variable,Absolute) <- First contact coordinates 19 00 // USAGE_MINIMUM (0) 29 0f // USAGE_MAXIMUM (15) 15 00 // LOGICAL_MINIMUM (0) 25 0f // LOGICAL_MAXIMUM (15) 75 04 // REPORT_SIZE (4) 95 02 // REPORT_COUNT (2) 81 02 // INPUT (Data,Variable,Absolute) <- First contact width and height 09 30 // USAGE (X) 15 81 // LOGICAL_MINIMUM (-127) 25 7f // LOGICAL_MAXIMUM (127) 75 08 // REPORT_SIZE (8) 95 01 // REPORT_COUNT (1) 81 06 // INPUT (Data,Variable,Relative) <- X axis relative 09 30 // USAGE (X) 09 31 // USAGE (Y) 16 01 f8 // LOGICAL_MINIMUM (-2047) 26 ff 07 // LOGICAL_MAXIMUM (2047) 75 0c // REPORT_SIZE (12) 95 02 // REPORT_COUNT (2) 81 02 // INPUT (Data,Variable,Absolute) <- Second contact coordinates 19 00 // USAGE_MINIMUM (0) 29 0f // USAGE_MAXIMUM (15) 15 00 // LOGICAL_MINIMUM (0) 25 0f // LOGICAL_MAXIMUM (15) 75 04 // REPORT_SIZE (4) 95 02 // REPORT_COUNT (2) 81 02 // INPUT (Data,Variable,Absolute) <- Second contact width and height 09 31 // USAGE (Y) 15 81 // LOGICAL_MINIMUM (-127) 25 7f // LOGICAL_MAXIMUM (127) 75 08 // REPORT_SIZE (8) 95 01 // REPORT_COUNT (1) 81 06 // INPUT (Data,Variable,Relative) <- Y axis relative c0 // END_COLLECTION 05 0c // USAGE_PAGE (Consumer Device) 09 01 // USAGE (Consumer Control) a1 01 // COLLECTION (Application) 85 03 // REPORT_ID (3) 19 00 // USAGE_MINIMUM (0) 2a 9c 02 // USAGE_MAXIMUM (668) 15 00 // LOGICAL_MINIMUM (0) 26 9c 02 // LOGICAL_MAXIMUM (668) 75 10 // REPORT_SIZE (16) 95 01 // REPORT_COUNT (1) 81 00 // INPUT (Data,Array,Absolute) <- Additional remote buttons, on, off, etc. c0 // END_COLLECTION 05 01 // USAGE_PAGE (Generic Desktop) 09 08 // USAGE (Multi-axis Controller) a1 01 // COLLECTION (Application) 85 04 // REPORT_ID (4) 09 40 // USAGE (Vx) 09 41 // USAGE (Vy) 09 42 // USAGE (Vz) 66 11 e0 // UNIT (SI Linear: Centimeter*Seconds^-2) 16 00 80 // LOGICAL_MINIMUM (-32768) 26 ff 7f // LOGICAL_MAXIMUM (32767) 75 10 // REPORT_SIZE (16) 95 03 // REPORT_COUNT (3) 81 02 // INPUT (Data,Variable,Absolute) <- 3-axis accelerometer 09 00 // USAGE () 15 00 // LOGICAL_MINIMUM (0) 26 ff 00 // LOGICAL_MAXIMUM (255) 75 08 // REPORT_SIZE (8) 95 01 // REPORT_COUNT (1) 81 02 // INPUT (Data,Variable,Absolute) <- motion intensity? c0 // END_COLLECTION 06 01 ff // USAGE_PAGE (Generic Device Reserved) <- Vendor specific 09 02 // USAGE () <- Trying to look like a Generic Desktop Mouse? a1 01 // COLLECTION (Application) 85 05 // REPORT_ID (5) 19 01 // USAGE_MINIMUM (1) 29 ff // USAGE_MAXIMUM (255) 15 00 // LOGICAL_MINIMUM (0) 26 ff 00 // LOGICAL_MAXIMUM (255) 75 08 // REPORT_SIZE (8) 95 06 // REPORT_COUNT (6) 81 00 // INPUT (Data,Array,Absolute) 19 01 // USAGE_MINIMUM (1) 29 ff // USAGE_MAXIMUM (255) 15 00 // LOGICAL_MINIMUM (0) 26 ff 00 // LOGICAL_MAXIMUM (255) 75 08 // REPORT_SIZE (8) 95 06 // REPORT_COUNT (6) 91 00 // OUTPUT (Data,Array,Absolute) <- eh? c0 // END_COLLECTION 06 01 ff // USAGE_PAGE (Generic Device Reserved) <- Vendor specific 09 03 // USAGE () <- Generic Desktop Reserved? a1 01 // COLLECTION (Application) 85 06 // REPORT_ID (6) 19 01 // USAGE_MINIMUM (1) 29 ff // USAGE_MAXIMUM (255) 15 00 // LOGICAL_MINIMUM (0) 26 ff 00 // LOGICAL_MAXIMUM (255) 75 08 // REPORT_SIZE (8) 95 0f // REPORT_COUNT (15) 81 00 // INPUT (Data,Array,Absolute) 19 01 // USAGE_MINIMUM (1) 29 ff // USAGE_MAXIMUM (255) 15 00 // LOGICAL_MINIMUM (0) 26 ff 00 // LOGICAL_MAXIMUM (255) 75 08 // REPORT_SIZE (8) 95 0f // REPORT_COUNT (15) 91 00 // OUTPUT (Data,Array,Absolute) c0 // END_COLLECTION 06 01 ff // USAGE_PAGE (Generic Device Reserved) <- Vendor specific 09 05 // USAGE () <- Trying to look like a Generic Desktop Game Pad? a1 01 // COLLECTION (Application) 85 08 // REPORT_ID (8) <- Where did report id #7 go? 19 01 // USAGE_MINIMUM (1) 29 ff // USAGE_MAXIMUM (255) 15 00 // LOGICAL_MINIMUM (0) 26 ff 00 // LOGICAL_MAXIMUM (255) 75 08 // REPORT_SIZE (8) 95 06 // REPORT_COUNT (6) 81 00 // INPUT (Data,Array,Absolute) 19 01 // USAGE_MINIMUM (1) 29 ff // USAGE_MAXIMUM (255) 15 00 // LOGICAL_MINIMUM (0) 26 ff 00 // LOGICAL_MAXIMUM (255) 75 08 // REPORT_SIZE (8) 95 06 // REPORT_COUNT (6) 91 00 // OUTPUT (Data,Array,Absolute) c0 // END_COLLECTION 00 // <- Extra byte, similar to sixaxis report descriptor -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
