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asus-laptop: add backlight changes notifications 

We don't want to send KEY_BRIGHTNESSDOWN or KEY_BRIGHTNESSUP
because it would be a lie to tell userspace that we want
to change the brightness while it's actually done by the
firmware.

Signed-off-by: Corentin Chary <corentincj@iksaif.net>
This commit is contained in:
Corentin Chary 2010-01-25 22:53:21 +01:00
parent 7f607d7106
commit a539df5e15
1 changed files with 27 additions and 2 deletions
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29
drivers/platform/x86/asus-laptop.c
View File

@ -93,8 +93,10 @@ MODULE_PARM_DESC(bluetooth_status, "Set the wireless status on boot "
/*
* Some events we use, same for all Asus
*/
#define ATKD_BR_UP 0x10
#define ATKD_BR_DOWN 0x20
#define ATKD_BR_UP 0x10 // (event & ~ATKD_BR_UP) = brightness level
#define ATKD_BR_DOWN 0x20 // (event & ~ATKD_BR_DOWN) = britghness level
#define ATKD_BR_MIN ATKD_BR_UP
#define ATKD_BR_MAX (ATKD_BR_DOWN | 0xF) // 0x2f
#define ATKD_LCD_ON 0x33
#define ATKD_LCD_OFF 0x34
@ -245,11 +247,13 @@ struct asus_laptop {
};
static const struct key_entry asus_keymap[] = {
/* Lenovo SL Specific keycodes */
{KE_KEY, 0x02, { KEY_SCREENLOCK } },
{KE_KEY, 0x05, { KEY_WLAN } },
{KE_KEY, 0x08, { KEY_F13 } },
{KE_KEY, 0x17, { KEY_ZOOM } },
{KE_KEY, 0x1f, { KEY_BATTERY } },
/* End of Lenovo SL Specific keycodes */
{KE_KEY, 0x30, { KEY_VOLUMEUP } },
{KE_KEY, 0x31, { KEY_VOLUMEDOWN } },
{KE_KEY, 0x32, { KEY_MUTE } },
@ -626,6 +630,16 @@ static struct backlight_ops asusbl_ops = {
.update_status = update_bl_status,
};
static int asus_backlight_notify(struct asus_laptop *asus)
{
struct backlight_device *bd = asus->backlight_device;
int old = bd->props.brightness;
backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
return old;
}
static int asus_backlight_init(struct asus_laptop *asus)
{
struct backlight_device *bd;
@ -656,6 +670,7 @@ static void asus_backlight_exit(struct asus_laptop *asus)
{
if (asus->backlight_device)
backlight_device_unregister(asus->backlight_device);
asus->backlight_device = NULL;
}
/*
@ -1121,6 +1136,16 @@ static void asus_acpi_notify(struct acpi_device *device, u32 event)
dev_name(&asus->device->dev), event,
count);
/* Brightness events are special */
if (event >= ATKD_BR_MIN && event <= ATKD_BR_MAX) {
/* Ignore them completely if the acpi video driver is used */
if (asus->backlight_device != NULL) {
/* Update the backlight device. */
asus_backlight_notify(asus);
}
return ;
}
asus_input_notify(asus, event);
}