On Fri, Mar 9, 2012 at 3:17 AM, AceLan Kao <acelan.kao@xxxxxxxxxxxxx> wrote:
> Some ASUS ET2012 All-in-One machines will handle the brightness events
> from BIOS, but we still need the key events to inform X to draw the
> brightness OSD.
>
> Signed-off-by: AceLan Kao <acelan.kao@xxxxxxxxxxxxx>
> ---
> drivers/platform/x86/asus-wmi.c | 8 +++++++-
> drivers/platform/x86/asus-wmi.h | 1 +
> drivers/platform/x86/eeepc-wmi.c | 7 ++++++-
> 3 files changed, 14 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
> index 48e96f3..80c05ff 100644
> --- a/drivers/platform/x86/asus-wmi.c
> +++ b/drivers/platform/x86/asus-wmi.c
> @@ -1272,7 +1272,13 @@ 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);
> + {
> + if (unlikely(asus->driver->need_brightness_event))
> + sparse_keymap_report_event(asus->inputdev,
> + code, key_value, autorelease);
> + else
> + asus_wmi_backlight_notify(asus, orig_code);
> + }
If events are already handled by the BIOS you need to use
backlight_notify. Keys are only sent when userspace need to update the
backlight by itself. The GUI should only use uevents sent by the
backlight device.
Is the generic ACPI backlight functional ? Do you have to use
acpi_backlight=vendor ?
> } else if (!sparse_keymap_report_event(asus->inputdev, code,
> key_value, autorelease))
> pr_info("Unknown key %x pressed\n", code);
> diff --git a/drivers/platform/x86/asus-wmi.h b/drivers/platform/x86/asus-wmi.h
> index 45fb62c..d6683ba 100644
> --- a/drivers/platform/x86/asus-wmi.h
> +++ b/drivers/platform/x86/asus-wmi.h
> @@ -38,6 +38,7 @@ struct asus_wmi;
> struct asus_wmi_driver {
> bool hotplug_wireless;
> bool scalar_panel_brightness;
> + bool need_brightness_event;
> int wapf;
>
> const char *name;
> diff --git a/drivers/platform/x86/eeepc-wmi.c b/drivers/platform/x86/eeepc-wmi.c
> index c5f4c64..311f317 100644
> --- a/drivers/platform/x86/eeepc-wmi.c
> +++ b/drivers/platform/x86/eeepc-wmi.c
> @@ -63,6 +63,8 @@ MODULE_PARM_DESC(hotplug_wireless,
>
> static const struct key_entry eeepc_wmi_keymap[] = {
> /* Sleep already handled via generic ACPI code */
> + { KE_KEY, 0x11, { KEY_BRIGHTNESSUP } },
> + { KE_KEY, 0x20, { KEY_BRIGHTNESSDOWN } },
> { KE_KEY, 0x30, { KEY_VOLUMEUP } },
> { KE_KEY, 0x31, { KEY_VOLUMEDOWN } },
> { KE_KEY, 0x32, { KEY_MUTE } },
> @@ -167,7 +169,9 @@ static void eeepc_dmi_check(struct asus_wmi_driver *driver)
> char oemstring[30];
> while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
> if (sscanf(dev->name, "AEMS%24c", oemstring) == 1) {
> - if (oemstring[18] == '3')
> + if (oemstring[18] == '1')
> + driver->need_brightness_event = true;
> + else if (oemstring[18] == '3')
> driver->scalar_panel_brightness = true;
> break;
> }
> @@ -179,6 +183,7 @@ static void eeepc_wmi_quirks(struct asus_wmi_driver *driver)
> {
> driver->hotplug_wireless = hotplug_wireless;
> driver->scalar_panel_brightness = false;
> + driver->need_brightness_event = false;
> driver->wapf = -1;
> eeepc_dmi_check(driver);
> }
> --
> 1.7.9
>
--
Corentin Chary
http://xf.iksaif.net
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