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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