On Wed, Dec 19, 2012 at 10:16 AM, Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx> wrote: > On Wed, Dec 19, 2012 at 12:57:22PM +0000, Grant Likely wrote: >> On Fri, 14 Dec 2012 17:43:31 -0800, Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx> wrote: >> > On Saturday, December 15, 2012 01:13:45 AM Grant Likely wrote: >> > > On Wed, 12 Dec 2012 13:33:48 -0800, Simon Glass <sjg@xxxxxxxxxxxx> wrote: >> > > > Use the key-matrix layer to interpret key scan information from the EC >> > > > and inject input based on the FDT-supplied key map. This driver registers >> > > > itself with the ChromeOS EC driver to perform communications. >> > > > >> > > > Additional FDT bindings are provided to specify rows/columns and the >> > > > auto-repeat information. >> > > > >> > > > Signed-off-by: Simon Glass <sjg@xxxxxxxxxxxx> >> > > > Signed-off-by: Luigi Semenzato <semenzato@xxxxxxxxxxxx> >> > > > Signed-off-by: Vincent Palatin <vpalatin@xxxxxxxxxxxx> >> > > > --- >> > > > >> > > > .../devicetree/bindings/input/cros-ec-keyb.txt | 77 ++++ >> > > > drivers/input/keyboard/Kconfig | 10 + >> > > > drivers/input/keyboard/Makefile | 1 + >> > > > drivers/input/keyboard/cros_ec_keyb.c | 413 >> > > > ++++++++++++++++++++ 4 files changed, 501 insertions(+), 0 deletions(-) >> > > > create mode 100644 >> > > > Documentation/devicetree/bindings/input/cros-ec-keyb.txt >> > > > create mode 100644 drivers/input/keyboard/cros_ec_keyb.c >> > > > >> > > > diff --git a/Documentation/devicetree/bindings/input/cros-ec-keyb.txt >> > > > b/Documentation/devicetree/bindings/input/cros-ec-keyb.txt new file mode >> > > > 100644 >> > > > index 0000000..67f51d8 >> > > > --- /dev/null >> > > > +++ b/Documentation/devicetree/bindings/input/cros-ec-keyb.txt >> > > > @@ -0,0 +1,77 @@ >> > > > +ChromeOS EC Keyboard >> > > > + >> > > > +Google's ChromeOS EC Keyboard is a simple matrix keyboard implemented on >> > > > +a separate EC (Embedded Controller) device. It provides a message for >> > > > reading +key scans from the EC. These are then converted into keycodes >> > > > for processing +by the kernel. >> > > > + >> > > > +Required properties: >> > > > +- compatible: "google,cros-ec-keyb" >> > > > +- google,key-rows: Number of keyboard rows (must be <= 8) >> > > > +- google,key-columns: Number of keyboard columns (must be <= 13) >> > > > +- google,repeat-delay-ms: Key repeat delay in milliseconds >> > > > +- google,repeat-rate-ms: Key repeat rate in milliseconds >> > > >> > > Hmmm, these should probably be in a common binding. Take a look at >> > > the other input bindings and make a proposal for properties to add to >> > > matrix-keymap.txt. >> > >> > Actually these are not essentia for bringup and can be set from userspace, >> > so I'd say simply drop them. >> >> Aren't they needed for a working keyboard? If so, I would really think >> they should be set correctly without userspace intervention. > > I am sorry if I was unclear, but I was actually talking about the last > 2: repeat-delay-ms and repeat-rate-ms. Input core has I believe sane > defaults (250 msec delay, 33 cps autorepeat) and user can adjust if > other rate is preferred. (resending due to mailing problem) I seems like I should remove these two, then. It would be nice if we could keep these parameters so that the keyboard doesn't require user-space set up to work, but I understand and agree they are not essential. Regarding Grant's request to come up with a common binding, if I remove these then that is not needed, right? Regards, Simon > > Thanks. > > -- > Dmitry -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
