Hi Tom, I read Microsoft's things about HID over I2C few days ago. And from what I understood, the report descriptors and the enumeration of the devices are stored in the ACPI table and not in the device itself. Can you confirm this? I was thinking about making hid-multitouch independent from the usb stack and was thinking about doing the i2c-hid bridge. However, I did not start writing a line yet ;-) Cheers, Benjamin On Thu, Apr 12, 2012 at 03:37, 林彥佑 <tom_lin@xxxxxxxxxx> wrote: > Hi Dmitry > > > On 04/12/2012 12:25 AM, Dmitry Torokhov wrote: >> >> On Wednesday, April 11, 2012 06:09:03 PM 林彥佑 wrote: >>> >>> Hi Daniel >>> >>> On 04/11/2012 03:12 PM, Dmitry Torokhov wrote: >>>> >>>> Hi Tom, >>>> >>>> On Tue, Apr 10, 2012 at 08:42:46PM +0800, Tom Lin wrote: >>>>> >>>>> This patch adds driver for Elan I2C touchpad. These protocol of HID-I2C >>>>> was >>>>> defined by Microsoft. The kernel driver would use the multi-touch >>>>> protocol >>>>> format B. >>>> >>>> >>>> If this device truly supports HID protocol shouldn't we define i2c-hid >>>> transport, similar to usbhid? >>> >>> >>> I merely follow defined by Microsoft. >>> It was called "HID OVER I2C" by Microsoft. >>> >>> (http://msdn.microsoft.com/en-us/library/windows/hardware/hh825917(v=vs.85). >>> aspx) But I agree to change from hid i2c to i2chid. >>> Do you have any better opinions? >> >> >> I am not sure we are talking about same thing... I do not really care >> whether it is named "hid i2c" or "i2chid". What I meant if the device >> really speaks HID protocol, except that the transport is not USB or >> bluetooth but I2C, then instead of writing a custom driver for this >> particular part we need to add a new HID transport into >> drivers/hid/i2c-hid that is similar to drivers/hid/usbhid/ and reuse the >> rest of HID framework along with hid- multitouch.c which handles >> HID-compliant multitouch devices. >> >> I am CCing Jiri (HID maintainer) for additional input. > > Sorry! I misunderstood what you mean. > I fully agree with your suggestion. The I2CHID device will be more and more > in the future. Need the new i2chid-driver that would cover all hid-compliant > i2c-devices. > Thank you > > Tom- >> >> >> Thanks. >> > > -- > 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 -- 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
