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Subject[PATCH 02/16] asus-wmi: Add callback for hotkey filtering
Date
From: Seth Forshee <seth.forshee@canonical.com>

This is required for the T101MT home key, which behaves differently
than other hotkeys.

Signed-off-by: Seth Forshee <seth.forshee@canonical.com>
Signed-off-by: Corentin Chary <corentin.chary@gmail.com>
---
drivers/platform/x86/asus-wmi.c | 12 +++++++++++-
drivers/platform/x86/asus-wmi.h | 6 ++++++
2 files changed, 17 insertions(+), 1 deletions(-)

diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
index d1ddb4a..a09271d 100644
--- a/drivers/platform/x86/asus-wmi.c
+++ b/drivers/platform/x86/asus-wmi.c
@@ -1060,6 +1060,8 @@ static void asus_wmi_notify(u32 value, void *context)
acpi_status status;
int code;
int orig_code;
+ unsigned int key_value = 1;
+ bool autorelease = 1;

status = wmi_get_event_data(value, &response);
if (status != AE_OK) {
@@ -1075,6 +1077,13 @@ static void asus_wmi_notify(u32 value, void *context)
code = obj->integer.value;
orig_code = code;

+ if (asus->driver->key_filter) {
+ asus->driver->key_filter(asus->driver, &code, &key_value,
+ &autorelease);
+ if (code == ASUS_WMI_KEY_IGNORE)
+ goto exit;
+ }
+
if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
code = NOTIFY_BRNUP_MIN;
else if (code >= NOTIFY_BRNDOWN_MIN &&
@@ -1084,7 +1093,8 @@ static void asus_wmi_notify(u32 value, void *context)
if (code == NOTIFY_BRNUP_MIN || code == NOTIFY_BRNDOWN_MIN) {
if (!acpi_video_backlight_support())
asus_wmi_backlight_notify(asus, orig_code);
- } else if (!sparse_keymap_report_event(asus->inputdev, code, 1, true))
+ } else if (!sparse_keymap_report_event(asus->inputdev, code,
+ key_value, autorelease))
pr_info("Unknown key %x pressed\n", code);

exit:
diff --git a/drivers/platform/x86/asus-wmi.h b/drivers/platform/x86/asus-wmi.h
index c044522..4da6103 100644
--- a/drivers/platform/x86/asus-wmi.h
+++ b/drivers/platform/x86/asus-wmi.h
@@ -29,6 +29,8 @@

#include <linux/platform_device.h>

+#define ASUS_WMI_KEY_IGNORE (-1)
+
struct module;
struct key_entry;
struct asus_wmi;
@@ -44,6 +46,10 @@ struct asus_wmi_driver {
const struct key_entry *keymap;
const char *input_name;
const char *input_phys;
+ /* Returns new code, value, and autorelease values in arguments.
+ * Return ASUS_WMI_KEY_IGNORE in code if event should be ignored. */
+ void (*key_filter) (struct asus_wmi_driver *driver, int *code,
+ unsigned int *value, bool *autorelease);

int (*probe) (struct platform_device *device);
void (*quirks) (struct asus_wmi_driver *driver);
--
1.7.3.4


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