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| author | Rodney Lorrimar <rodney@rodney.id.au> | 2008-05-05 11:59:24 -0400 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2008-05-16 14:50:10 -0400 |
| commit | 5b7c407baa9501e49ebd3b6eac30cd4bcb60ca9d (patch) | |
| tree | 4aa4bb8ff87d1a01058a8c9061ecf09b15f8c930 /drivers/macintosh | |
| parent | 2e75f044c717b85f65d74c8c90624428ba31078c (diff) | |
| download | lwn-5b7c407baa9501e49ebd3b6eac30cd4bcb60ca9d.tar.gz lwn-5b7c407baa9501e49ebd3b6eac30cd4bcb60ca9d.zip | |
Input: adbhid - capslock and power button fix
If the adbhid module parameter restore_capslock_events is used,
pressing the power button may confuse the capslock state. This is
because the power button release scancode (0xff) is sometimes the same
as the capslock press/release scancode.
This fix adds yet another flag to track the state of the power button
so that it works independently of capslock.
Signed-off-by: Rodney Lorrimar <rodney@rodney.id.au>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Diffstat (limited to 'drivers/macintosh')
| -rw-r--r-- | drivers/macintosh/adbhid.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/macintosh/adbhid.c b/drivers/macintosh/adbhid.c index 6e9afe26db89..b7f41d3823a6 100644 --- a/drivers/macintosh/adbhid.c +++ b/drivers/macintosh/adbhid.c @@ -225,6 +225,7 @@ struct adbhid { #define FLAG_CAPSLOCK_TRANSLATE 0x00000008 #define FLAG_CAPSLOCK_DOWN 0x00000010 #define FLAG_CAPSLOCK_IGNORE_NEXT 0x00000020 +#define FLAG_POWER_KEY_PRESSED 0x00000040 static struct adbhid *adbhid[16]; @@ -301,9 +302,11 @@ adbhid_input_keycode(int id, int scancode, int repeat) ahid->flags |= FLAG_CAPSLOCK_TRANSLATE | FLAG_CAPSLOCK_DOWN; } - } else if (scancode == 0xff) { + } else if (scancode == 0xff && + !(ahid->flags & FLAG_POWER_KEY_PRESSED)) { /* Scancode 0xff usually signifies that the capslock - * key was either pressed or released. */ + * key was either pressed or released, or that the + * power button was released. */ if (ahid->flags & FLAG_CAPSLOCK_TRANSLATE) { keycode = ADB_KEY_CAPSLOCK; if (ahid->flags & FLAG_CAPSLOCK_DOWN) { @@ -317,7 +320,7 @@ adbhid_input_keycode(int id, int scancode, int repeat) } } else { printk(KERN_INFO "Spurious caps lock event " - "(scancode 0xff)."); + "(scancode 0xff).\n"); } } } @@ -344,6 +347,12 @@ adbhid_input_keycode(int id, int scancode, int repeat) } break; case ADB_KEY_POWER: + /* Keep track of the power key state */ + if (up_flag) + ahid->flags &= ~FLAG_POWER_KEY_PRESSED; + else + ahid->flags |= FLAG_POWER_KEY_PRESSED; + /* Fn + Command will produce a bogus "power" keycode */ if (ahid->flags & FLAG_FN_KEY_PRESSED) { keycode = ADB_KEY_CMD; |