applied to acpi-test (for 2.6.30)
thanks,
Len Brown, Intel Open Source Technology Center
On Wed, 4 Mar 2009, akpm@xxxxxxxxxxxxxxxxxxxx wrote:
> From: Frans Pop <elendil@xxxxxxxxx>
>
> It is possible that the system gets docked or undocked while it's
> suspended. Generate an input event on resume to notify user space
> if there was a state change.
>
> As it is a switch, we can generate the event unconditionally; the
> input layer will only pass it on if there is an actual change.
>
> Signed-off-by: Frans Pop <elendil@xxxxxxxxx>
> Cc: Matthew Garrett <mjg59@xxxxxxxxxxxxx>
> Cc: Len Brown <lenb@xxxxxxxxxx>
> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
> ---
>
> drivers/platform/x86/hp-wmi.c | 25 +++++++++++++++++++++++++
> 1 file changed, 25 insertions(+)
>
> diff -puN drivers/platform/x86/hp-wmi.c~hp-wmi-notify-of-a-potential-docking-state-change-on-resume drivers/platform/x86/hp-wmi.c
> --- a/drivers/platform/x86/hp-wmi.c~hp-wmi-notify-of-a-potential-docking-state-change-on-resume
> +++ a/drivers/platform/x86/hp-wmi.c
> @@ -53,6 +53,7 @@ MODULE_ALIAS("wmi:5FB7F034-2C63-45e9-BE9
>
> static int __init hp_wmi_bios_setup(struct platform_device *device);
> static int __exit hp_wmi_bios_remove(struct platform_device *device);
> +static int hp_wmi_resume_handler(struct platform_device *device);
>
> struct bios_args {
> u32 signature;
> @@ -101,6 +102,7 @@ static struct platform_driver hp_wmi_dri
> },
> .probe = hp_wmi_bios_setup,
> .remove = hp_wmi_bios_remove,
> + .resume = hp_wmi_resume_handler,
> };
>
> static int hp_wmi_perform_query(int query, int write, int value)
> @@ -487,6 +489,29 @@ static int __exit hp_wmi_bios_remove(str
> return 0;
> }
>
> +static int hp_wmi_resume_handler(struct platform_device *device)
> +{
> + struct key_entry *key;
> +
> + /*
> + * Docking state may have changed while suspended, so trigger
> + * an input event for the current state. As this is a switch,
> + * the input layer will only actually pass it on if the state
> + * changed.
> + */
> + for (key = hp_wmi_keymap; key->type != KE_END; key++) {
> + switch (key->type) {
> + case KE_SW:
> + input_report_switch(hp_wmi_input_dev, key->keycode,
> + hp_wmi_dock_state());
> + input_sync(hp_wmi_input_dev);
> + break;
> + }
> + }
> +
> + return 0;
> +}
> +
> static int __init hp_wmi_init(void)
> {
> int err;
> _
>
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