On Wed, Dec 19, 2012 at 10:16 AM, Dmitry Torokhov <[email protected] > 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 < > [email protected]> wrote: > > > On Saturday, December 15, 2012 01:13:45 AM Grant Likely wrote: > > > > On Wed, 12 Dec 2012 13:33:48 -0800, Simon Glass <[email protected]> > 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 <[email protected]> > > > > > Signed-off-by: Luigi Semenzato <[email protected]> > > > > > Signed-off-by: Vincent Palatin <[email protected]> > > > > > --- > > > > > > > > > > .../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. > 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 >
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