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    Subject[RFC/PATCH 2/3] Input: resume support for i8042 (atkbd & psmouse)
    Date
    ===================================================================


    ChangeSet@1.1515, 2003-12-01 01:43:05-05:00, dtor_core@ameritech.net
    Input: Add reconnect method to atkbd to restore keyboard state
    after suspend (to be called from i8042 resume function)


    atkbd.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
    1 files changed, 50 insertions(+)


    ===================================================================



    diff -Nru a/drivers/input/keyboard/atkbd.c b/drivers/input/keyboard/atkbd.c
    --- a/drivers/input/keyboard/atkbd.c Mon Dec 1 01:45:48 2003
    +++ b/drivers/input/keyboard/atkbd.c Mon Dec 1 01:45:48 2003
    @@ -686,10 +686,60 @@
    printk(KERN_INFO "input: %s on %s\n", atkbd->name, serio->phys);
    }

    +/*
    + * atkbd_reconnect() tries to restore keyboard in a sane state and is
    + * most likely called on resume.
    + */
    +
    +static int atkbd_reconnect(struct serio *serio)
    +{
    + struct atkbd *atkbd = serio->private;
    + struct serio_dev *dev = serio->dev;
    + int i;
    +
    + if (!dev) {
    + printk(KERN_DEBUG "atkbd: reconnect request, but serio is disconnected, ignoring...\n");
    + return -1;
    + }
    +
    + if (atkbd->write) {
    + if (atkbd_probe(atkbd))
    + return -1;
    +
    + atkbd->set = atkbd_set_3(atkbd);
    + atkbd_enable(atkbd);
    + } else {
    + atkbd->set = 2;
    + atkbd->id = 0xab00;
    + }
    +
    + /*
    + * Here we probably should check if the keyboard has the same set that
    + * it had before and bail out if it's different. But this will most likely
    + * cause new keyboard device be created... and for the user it will look
    + * like keyboard is lost
    + */
    +
    + if (atkbd->set == 3)
    + memcpy(atkbd->keycode, atkbd_set3_keycode, sizeof(atkbd->keycode));
    + else
    + memcpy(atkbd->keycode, atkbd_set2_keycode, sizeof(atkbd->keycode));
    +
    + for (i = 0; i < 512; i++)
    + if (atkbd->keycode[i] && atkbd->keycode[i] < 255)
    + set_bit(atkbd->keycode[i], atkbd->dev.keybit);
    +
    + printk(KERN_INFO "input: %s on %s (reconnected)\n", atkbd->name, serio->phys);
    +
    + return 0;
    +}
    +
    +

    static struct serio_dev atkbd_dev = {
    .interrupt = atkbd_interrupt,
    .connect = atkbd_connect,
    + .reconnect = atkbd_reconnect,
    .disconnect = atkbd_disconnect,
    .cleanup = atkbd_cleanup,
    };
    -
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