Hi, > -----Original Message----- > From: Benjamin Tissoires [mailto:benjamin.tissoires@xxxxxxxxx] > Sent: Friday, November 16, 2012 8:26 PM > To: Jiri Kosina; Ramalingam C > Cc: Dmitry Torokhov; Stephane Chatty; fabien.andre@xxxxxxxxx; > scott.liu@xxxxxxxxxx; Jean Delvare; JJ Ding; Jiri Slaby; Shubhrajyoti Datta; > linux-i2c@xxxxxxxxxxxxxxx; linux-input@xxxxxxxxxxxxxxx; linux- > kernel@xxxxxxxxxxxxxxx > Subject: Re: [PATCH v3] i2c-hid: introduce HID over i2c specification > implementation > > On Thu, Nov 15, 2012 at 3:04 PM, Benjamin Tissoires > <benjamin.tissoires@xxxxxxxxx> wrote: > > On Thu, Nov 15, 2012 at 2:51 PM, Jiri Kosina <jkosina@xxxxxxx> wrote: > >> On Mon, 12 Nov 2012, Benjamin Tissoires wrote: > >> > >>> Microsoft published the protocol specification of HID over i2c: > >>> http://msdn.microsoft.com/en- > us/library/windows/hardware/hh852380.as > >>> px > >>> > >>> This patch introduces an implementation of this protocol. > >>> > >>> This implementation does not includes the ACPI part of the specification. > >>> This will come when ACPI 5.0 devices enumeration will be available. > >>> > >>> Once the ACPI part is done, OEM will not have to declare HID over > >>> I2C devices in their platform specific driver. > >>> > >>> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@xxxxxxxxx> > >> > >> Out of curiosity -- has this been tested on a real device (is there > >> any such device available anyway?), or is that just the > >> implementation of the defined protocol? > > > > It has been tested on an ELAN microelectronics device (a prototype), > > on an odroid-x board. That's how we figure out the bug in the > > set_report command. > > I think we manage to test all main features of the protocol > > (get_report, irqs, hid descriptor, report descriptors, set_report). > > > > I'm currently waiting for a Synaptics touchpad to check if it's also > > working with their devices. > > > > The thing is that HID over i2c for x86 platform will presumably > > require the Haswell platform from Intel (we need ACPI 5 for > > enumeration), but it would be very nice to get this in the kernel just > > before hardware arrive on the market :) However, I won't be surprise > > if android OEMs also start using this specification because it won't > > force them to write kernel drivers... > > And as a complement, Ramalingam tested it for Nvidia on an early NVIDIA's > Tegra reference board for PISMO which is registered at > http://www.arm.linux.org.uk/developer/machines/list.php?id=4439 , with a > HID over i2c keyboard. > He is up to test also his Synaptics touchpad. I have tested with Synaptics trackpad. It is working fine. Thank you Benjamin. Thanks and Regards, Ramalingam C > > Cheers, > Benjamin > > > > > Cheers, > > Benjamin > > > >> > >> Thanks, > >> > >> -- > >> Jiri Kosina > >> SUSE Labs -- 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
