> Date: Sun, 10 Apr 2016 23:33:59 -0700
> From: Mike Larkin <mlar...@azathoth.net>
>
> Please test this diff on all machines that you can successfully (today)
> resume with 'zzz'. Please make sure that after resume, the keyboard
> still works.
>
> This diff re-enables the keyboard on resume. Previously, we were re-enabling
> the keyboard *controller* but apparently on some machines (notably the HP
> 4530s) the keyboard itself resumes in 'disabled' state and requires a
> re-enable.
>
> Keyboards are finicky, and this diff requires widespread testing before it
> can go in, to ensure no regressions. Please let me know if you have keyboard
> issues after resume.
FWIW, I think this is fairly low-risk. You should probably only do
this if the keyboard is actually enabled. Which means, only if
sc_enabled is set.
I also wonder if we also need the pckbd_set_xtscancode() call. That
shouldn't keep you from committing this as a first step though.
Also, you should always call config_activate_children(), not just only
in the DVACT_RESUME case.
> Index: dev/pckbc/pckbd.c
> ===================================================================
> RCS file: /cvs/src/sys/dev/pckbc/pckbd.c,v
> retrieving revision 1.42
> diff -u -p -a -u -r1.42 pckbd.c
> --- dev/pckbc/pckbd.c 4 May 2015 09:33:46 -0000 1.42
> +++ dev/pckbc/pckbd.c 11 Apr 2016 06:24:06 -0000
> @@ -123,13 +123,14 @@ static int pckbd_is_console(pckbc_tag_t,
>
> int pckbdprobe(struct device *, void *, void *);
> void pckbdattach(struct device *, struct device *, void *);
> +int pckbdactivate(struct device *, int);
>
> struct cfattach pckbd_ca = {
> sizeof(struct pckbd_softc),
> pckbdprobe,
> pckbdattach,
> NULL,
> - NULL
> + pckbdactivate
> };
>
> int pckbd_enable(void *, int);
> @@ -181,6 +182,29 @@ static int pckbd_decode(struct pckbd_int
> static int pckbd_led_encode(int);
>
> struct pckbd_internal pckbd_consdata;
> +
> +int
> +pckbdactivate(struct device *self, int act)
> +{
> + struct pckbd_softc *sc = (struct pckbd_softc *)self;
> + int rv = 0;
> + u_char cmd[1];
> +
> + switch(act) {
> + case DVACT_RESUME:
> + /*
> + * Some keyboards are not enabled after a reset,
> + * so make sure it is enabled now.
> + */
> + cmd[0] = KBC_ENABLE;
> + (void) pckbc_poll_cmd(sc->id->t_kbctag, sc->id->t_kbcslot,
> + cmd, 1, 0, NULL, 0);
> + rv = config_activate_children(self, act);
> + break;
> + }
> +
> + return (rv);
> +}
>
> int
> pckbd_set_xtscancode(pckbc_tag_t kbctag, pckbc_slot_t kbcslot,
>
>
